app_queue.c

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/*
 * Asterisk -- An open source telephony toolkit.
 *
 * Copyright (C) 1999 - 2006, Digium, Inc.
 *
 * Mark Spencer <markster@digium.com>
 *
 * See http://www.asterisk.org for more information about
 * the Asterisk project. Please do not directly contact
 * any of the maintainers of this project for assistance;
 * the project provides a web site, mailing lists and IRC
 * channels for your use.
 *
 * This program is free software, distributed under the terms of
 * the GNU General Public License Version 2. See the LICENSE file
 * at the top of the source tree.
 */

/*! \file
 *
 * \brief True call queues with optional send URL on answer
 *
 * \author Mark Spencer <markster@digium.com>
 *
 * \par Development notes
 * \note 2004-11-25: Persistent Dynamic Members added by:
 *             NetNation Communications (www.netnation.com)
 *             Kevin Lindsay <kevinl@netnation.com>
 *
 *             Each dynamic agent in each queue is now stored in the astdb.
 *             When asterisk is restarted, each agent will be automatically
 *             readded into their recorded queues. This feature can be
 *             configured with the 'persistent_members=<1|0>' setting in the
 *             '[general]' category in queues.conf. The default is on.
 *
 * \note 2004-06-04: Priorities in queues added by inAccess Networks (work funded by Hellas On Line (HOL) www.hol.gr).
 *
 * \note These features added by David C. Troy <dave@toad.net>:
 *    - Per-queue holdtime calculation
 *    - Estimated holdtime announcement
 *    - Position announcement
 *    - Abandoned/completed call counters
 *    - Failout timer passed as optional app parameter
 *    - Optional monitoring of calls, started when call is answered
 *
 * Patch Version 1.07 2003-12-24 01
 *
 * Added servicelevel statistic by Michiel Betel <michiel@betel.nl>
 * Added Priority jumping code for adding and removing queue members by Jonathan Stanton <asterisk@doilooklikeicare.com>
 *
 * Fixed to work with CVS as of 2004-02-25 and released as 1.07a
 * by Matthew Enger <m.enger@xi.com.au>
 *
 * \ingroup applications
 */

/*! 
 * \li The application app_queues uses configuration file \ref queues.conf
 * \addtogroup configuration_file
 */

/*! \page queues.conf queues.conf
 * \verbinclude queues.conf.sample
 */

/*** MODULEINFO
   <use type="module">res_monitor</use>
   <support_level>core</support_level>
 ***/

#include "asterisk.h"

ASTERISK_FILE_VERSION(__FILE__, "$Revision: 374805 $")

#include <sys/time.h>
#include <sys/signal.h>
#include <netinet/in.h>
#include <ctype.h>

#include "asterisk/lock.h"
#include "asterisk/file.h"
#include "asterisk/channel.h"
#include "asterisk/pbx.h"
#include "asterisk/app.h"
#include "asterisk/linkedlists.h"
#include "asterisk/module.h"
#include "asterisk/translate.h"
#include "asterisk/say.h"
#include "asterisk/features.h"
#include "asterisk/musiconhold.h"
#include "asterisk/cli.h"
#include "asterisk/manager.h"
#include "asterisk/config.h"
#include "asterisk/monitor.h"
#include "asterisk/utils.h"
#include "asterisk/causes.h"
#include "asterisk/astdb.h"
#include "asterisk/devicestate.h"
#include "asterisk/stringfields.h"
#include "asterisk/event.h"
#include "asterisk/astobj2.h"
#include "asterisk/strings.h"
#include "asterisk/global_datastores.h"
#include "asterisk/taskprocessor.h"
#include "asterisk/aoc.h"
#include "asterisk/callerid.h"
#include "asterisk/cel.h"
#include "asterisk/data.h"

/* Define, to debug reference counts on queues, without debugging reference counts on queue members */
/* #define REF_DEBUG_ONLY_QUEUES */

/*!
 * \par Please read before modifying this file.
 * There are three locks which are regularly used
 * throughout this file, the queue list lock, the lock
 * for each individual queue, and the interface list lock.
 * Please be extra careful to always lock in the following order
 * 1) queue list lock
 * 2) individual queue lock
 * 3) interface list lock
 * This order has sort of "evolved" over the lifetime of this
 * application, but it is now in place this way, so please adhere
 * to this order!
 */

/*** DOCUMENTATION
   <application name="Queue" language="en_US">
      <synopsis>
         Queue a call for a call queue.
      </synopsis>
      <syntax>
         <parameter name="queuename" required="true" />
         <parameter name="options">
            <optionlist>
               <option name="C">
                  <para>Mark all calls as "answered elsewhere" when cancelled.</para>
               </option>
               <option name="c">
                  <para>Continue in the dialplan if the callee hangs up.</para>
               </option>
               <option name="d">
                  <para>data-quality (modem) call (minimum delay).</para>
               </option>
               <option name="F" argsep="^">
                  <argument name="context" required="false" />
                  <argument name="exten" required="false" />
                  <argument name="priority" required="true" />
                  <para>When the caller hangs up, transfer the <emphasis>called member</emphasis>
                  to the specified destination and <emphasis>start</emphasis> execution at that location.</para>
                  <note>
                     <para>Any channel variables you want the called channel to inherit from the caller channel must be
                     prefixed with one or two underbars ('_').</para>
                  </note>
               </option>
               <option name="F">
                  <para>When the caller hangs up, transfer the <emphasis>called member</emphasis> to the next priority of
                  the current extension and <emphasis>start</emphasis> execution at that location.</para>
                  <note>
                     <para>Any channel variables you want the called channel to inherit from the caller channel must be
                     prefixed with one or two underbars ('_').</para>
                  </note>
                  <note>
                     <para>Using this option from a Macro() or GoSub() might not make sense as there would be no return points.</para>
                  </note>
               </option>
               <option name="h">
                  <para>Allow <emphasis>callee</emphasis> to hang up by pressing <literal>*</literal>.</para>
               </option>
               <option name="H">
                  <para>Allow <emphasis>caller</emphasis> to hang up by pressing <literal>*</literal>.</para>
               </option>
               <option name="n">
                  <para>No retries on the timeout; will exit this application and
                  go to the next step.</para>
               </option>
               <option name="i">
                  <para>Ignore call forward requests from queue members and do nothing
                  when they are requested.</para>
               </option>
               <option name="I">
                  <para>Asterisk will ignore any connected line update requests or any redirecting party
                  update requests it may receive on this dial attempt.</para>
               </option>
               <option name="r">
                  <para>Ring instead of playing MOH. Periodic Announcements are still made, if applicable.</para>
               </option>
               <option name="R">
                  <para>Ring instead of playing MOH when a member channel is actually ringing.</para>
               </option>
               <option name="t">
                  <para>Allow the <emphasis>called</emphasis> user to transfer the calling user.</para>
               </option>
               <option name="T">
                  <para>Allow the <emphasis>calling</emphasis> user to transfer the call.</para>
               </option>
               <option name="w">
                  <para>Allow the <emphasis>called</emphasis> user to write the conversation to
                  disk via Monitor.</para>
               </option>
               <option name="W">
                  <para>Allow the <emphasis>calling</emphasis> user to write the conversation to
                  disk via Monitor.</para>
               </option>
               <option name="k">
                  <para>Allow the <emphasis>called</emphasis> party to enable parking of the call by sending
                  the DTMF sequence defined for call parking in <filename>features.conf</filename>.</para>
               </option>
               <option name="K">
                  <para>Allow the <emphasis>calling</emphasis> party to enable parking of the call by sending
                  the DTMF sequence defined for call parking in <filename>features.conf</filename>.</para>
               </option>
               <option name="x">
                  <para>Allow the <emphasis>called</emphasis> user to write the conversation
                  to disk via MixMonitor.</para>
               </option>
               <option name="X">
                  <para>Allow the <emphasis>calling</emphasis> user to write the conversation to
                  disk via MixMonitor.</para>
               </option>
            </optionlist>
         </parameter>
         <parameter name="URL">
            <para><replaceable>URL</replaceable> will be sent to the called party if the channel supports it.</para>
         </parameter>
         <parameter name="announceoverride" />
         <parameter name="timeout">
            <para>Will cause the queue to fail out after a specified number of
            seconds, checked between each <filename>queues.conf</filename> <replaceable>timeout</replaceable> and
            <replaceable>retry</replaceable> cycle.</para>
         </parameter>
         <parameter name="AGI">
            <para>Will setup an AGI script to be executed on the calling party's channel once they are
            connected to a queue member.</para>
         </parameter>
         <parameter name="macro">
            <para>Will run a macro on the calling party's channel once they are connected to a queue member.</para>
         </parameter>
         <parameter name="gosub">
            <para>Will run a gosub on the calling party's channel once they are connected to a queue member.</para>
         </parameter>
         <parameter name="rule">
            <para>Will cause the queue's defaultrule to be overridden by the rule specified.</para>
         </parameter>
         <parameter name="position">
            <para>Attempt to enter the caller into the queue at the numerical position specified. <literal>1</literal>
            would attempt to enter the caller at the head of the queue, and <literal>3</literal> would attempt to place
            the caller third in the queue.</para>
         </parameter>
      </syntax>
      <description>
         <para>In addition to transferring the call, a call may be parked and then picked
         up by another user.</para>
         <para>This application will return to the dialplan if the queue does not exist, or
         any of the join options cause the caller to not enter the queue.</para>
         <para>This application does not automatically answer and should be preceeded
         by an application such as Answer(), Progress(), or Ringing().</para>
         <para>This application sets the following channel variable upon completion:</para>
         <variablelist>
            <variable name="QUEUESTATUS">
               <para>The status of the call as a text string.</para>
               <value name="TIMEOUT" />
               <value name="FULL" />
               <value name="JOINEMPTY" />
               <value name="LEAVEEMPTY" />
               <value name="JOINUNAVAIL" />
               <value name="LEAVEUNAVAIL" />
               <value name="CONTINUE" />
            </variable>
         </variablelist>
      </description>
      <see-also>
         <ref type="application">Queue</ref>
         <ref type="application">QueueLog</ref>
         <ref type="application">AddQueueMember</ref>
         <ref type="application">RemoveQueueMember</ref>
         <ref type="application">PauseQueueMember</ref>
         <ref type="application">UnpauseQueueMember</ref>
         <ref type="function">QUEUE_VARIABLES</ref>
         <ref type="function">QUEUE_MEMBER</ref>
         <ref type="function">QUEUE_MEMBER_COUNT</ref>
         <ref type="function">QUEUE_EXISTS</ref>
         <ref type="function">QUEUE_WAITING_COUNT</ref>
         <ref type="function">QUEUE_MEMBER_LIST</ref>
         <ref type="function">QUEUE_MEMBER_PENALTY</ref>
      </see-also>
   </application>
   <application name="AddQueueMember" language="en_US">
      <synopsis>
         Dynamically adds queue members.
      </synopsis>
      <syntax>
         <parameter name="queuename" required="true" />
         <parameter name="interface" />
         <parameter name="penalty" />
         <parameter name="options" />
         <parameter name="membername" />
         <parameter name="stateinterface" />
      </syntax>
      <description>
         <para>Dynamically adds interface to an existing queue. If the interface is
         already in the queue it will return an error.</para>
         <para>This application sets the following channel variable upon completion:</para>
         <variablelist>
            <variable name="AQMSTATUS">
               <para>The status of the attempt to add a queue member as a text string.</para>
               <value name="ADDED" />
               <value name="MEMBERALREADY" />
               <value name="NOSUCHQUEUE" />
            </variable>
         </variablelist>
      </description>
      <see-also>
         <ref type="application">Queue</ref>
         <ref type="application">QueueLog</ref>
         <ref type="application">AddQueueMember</ref>
         <ref type="application">RemoveQueueMember</ref>
         <ref type="application">PauseQueueMember</ref>
         <ref type="application">UnpauseQueueMember</ref>
         <ref type="function">QUEUE_VARIABLES</ref>
         <ref type="function">QUEUE_MEMBER</ref>
         <ref type="function">QUEUE_MEMBER_COUNT</ref>
         <ref type="function">QUEUE_EXISTS</ref>
         <ref type="function">QUEUE_WAITING_COUNT</ref>
         <ref type="function">QUEUE_MEMBER_LIST</ref>
         <ref type="function">QUEUE_MEMBER_PENALTY</ref>
      </see-also>
   </application>
   <application name="RemoveQueueMember" language="en_US">
      <synopsis>
         Dynamically removes queue members.
      </synopsis>
      <syntax>
         <parameter name="queuename" required="true" />
         <parameter name="interface" />
      </syntax>
      <description>
         <para>If the interface is <emphasis>NOT</emphasis> in the queue it will return an error.</para>
         <para>This application sets the following channel variable upon completion:</para>
         <variablelist>
            <variable name="RQMSTATUS">
               <value name="REMOVED" />
               <value name="NOTINQUEUE" />
               <value name="NOSUCHQUEUE" />
               <value name="NOTDYNAMIC" />
            </variable>
         </variablelist>
         <para>Example: RemoveQueueMember(techsupport,SIP/3000)</para>
      </description>
      <see-also>
         <ref type="application">Queue</ref>
         <ref type="application">QueueLog</ref>
         <ref type="application">AddQueueMember</ref>
         <ref type="application">RemoveQueueMember</ref>
         <ref type="application">PauseQueueMember</ref>
         <ref type="application">UnpauseQueueMember</ref>
         <ref type="function">QUEUE_VARIABLES</ref>
         <ref type="function">QUEUE_MEMBER</ref>
         <ref type="function">QUEUE_MEMBER_COUNT</ref>
         <ref type="function">QUEUE_EXISTS</ref>
         <ref type="function">QUEUE_WAITING_COUNT</ref>
         <ref type="function">QUEUE_MEMBER_LIST</ref>
         <ref type="function">QUEUE_MEMBER_PENALTY</ref>
      </see-also>
   </application>
   <application name="PauseQueueMember" language="en_US">
      <synopsis>
         Pauses a queue member.
      </synopsis>
      <syntax>
         <parameter name="queuename" />
         <parameter name="interface" required="true" />
         <parameter name="options" />
         <parameter name="reason">
            <para>Is used to add extra information to the appropriate queue_log entries and manager events.</para>
         </parameter>
      </syntax>
      <description>
         <para>Pauses (blocks calls for) a queue member. The given interface will be paused in the given queue.
         This prevents any calls from being sent from the queue to the interface until it is
         unpaused with UnpauseQueueMember or the manager interface.  If no queuename is given,
         the interface is paused in every queue it is a member of. The application will fail if the
         interface is not found.</para>
         <para>This application sets the following channel variable upon completion:</para>
         <variablelist>
            <variable name="PQMSTATUS">
               <para>The status of the attempt to pause a queue member as a text string.</para>
               <value name="PAUSED" />
               <value name="NOTFOUND" />
            </variable>
         </variablelist>
         <para>Example: PauseQueueMember(,SIP/3000)</para>
      </description>
      <see-also>
         <ref type="application">Queue</ref>
         <ref type="application">QueueLog</ref>
         <ref type="application">AddQueueMember</ref>
         <ref type="application">RemoveQueueMember</ref>
         <ref type="application">PauseQueueMember</ref>
         <ref type="application">UnpauseQueueMember</ref>
         <ref type="function">QUEUE_VARIABLES</ref>
         <ref type="function">QUEUE_MEMBER</ref>
         <ref type="function">QUEUE_MEMBER_COUNT</ref>
         <ref type="function">QUEUE_EXISTS</ref>
         <ref type="function">QUEUE_WAITING_COUNT</ref>
         <ref type="function">QUEUE_MEMBER_LIST</ref>
         <ref type="function">QUEUE_MEMBER_PENALTY</ref>
      </see-also>
   </application>
   <application name="UnpauseQueueMember" language="en_US">
      <synopsis>
         Unpauses a queue member.      
      </synopsis>
      <syntax>
         <parameter name="queuename" />
         <parameter name="interface" required="true" />
         <parameter name="options" />
         <parameter name="reason">
            <para>Is used to add extra information to the appropriate queue_log entries and manager events.</para>
         </parameter>
      </syntax>
      <description>
         <para>Unpauses (resumes calls to) a queue member. This is the counterpart to <literal>PauseQueueMember()</literal>
         and operates exactly the same way, except it unpauses instead of pausing the given interface.</para>
         <para>This application sets the following channel variable upon completion:</para>
         <variablelist>
            <variable name="UPQMSTATUS">
               <para>The status of the attempt to unpause a queue member as a text string.</para>
               <value name="UNPAUSED" />
               <value name="NOTFOUND" />
            </variable>
         </variablelist>
         <para>Example: UnpauseQueueMember(,SIP/3000)</para>
      </description>
      <see-also>
         <ref type="application">Queue</ref>
         <ref type="application">QueueLog</ref>
         <ref type="application">AddQueueMember</ref>
         <ref type="application">RemoveQueueMember</ref>
         <ref type="application">PauseQueueMember</ref>
         <ref type="application">UnpauseQueueMember</ref>
         <ref type="function">QUEUE_VARIABLES</ref>
         <ref type="function">QUEUE_MEMBER</ref>
         <ref type="function">QUEUE_MEMBER_COUNT</ref>
         <ref type="function">QUEUE_EXISTS</ref>
         <ref type="function">QUEUE_WAITING_COUNT</ref>
         <ref type="function">QUEUE_MEMBER_LIST</ref>
         <ref type="function">QUEUE_MEMBER_PENALTY</ref>
      </see-also>
   </application>
   <application name="QueueLog" language="en_US">
      <synopsis>
         Writes to the queue_log file.
      </synopsis>
      <syntax>
         <parameter name="queuename" required="true" />
         <parameter name="uniqueid" required="true" />
         <parameter name="agent" required="true" />
         <parameter name="event" required="true" />
         <parameter name="additionalinfo" />
      </syntax>
      <description>
         <para>Allows you to write your own events into the queue log.</para>
         <para>Example: QueueLog(101,${UNIQUEID},${AGENT},WENTONBREAK,600)</para>
      </description>
      <see-also>
         <ref type="application">Queue</ref>
         <ref type="application">QueueLog</ref>
         <ref type="application">AddQueueMember</ref>
         <ref type="application">RemoveQueueMember</ref>
         <ref type="application">PauseQueueMember</ref>
         <ref type="application">UnpauseQueueMember</ref>
         <ref type="function">QUEUE_VARIABLES</ref>
         <ref type="function">QUEUE_MEMBER</ref>
         <ref type="function">QUEUE_MEMBER_COUNT</ref>
         <ref type="function">QUEUE_EXISTS</ref>
         <ref type="function">QUEUE_WAITING_COUNT</ref>
         <ref type="function">QUEUE_MEMBER_LIST</ref>
         <ref type="function">QUEUE_MEMBER_PENALTY</ref>
      </see-also>
   </application>
   <function name="QUEUE_VARIABLES" language="en_US">
      <synopsis>
         Return Queue information in variables.
      </synopsis>
      <syntax>
         <parameter name="queuename" required="true">
            <enumlist>
               <enum name="QUEUEMAX">
                  <para>Maxmimum number of calls allowed.</para>
               </enum>
               <enum name="QUEUESTRATEGY">
                  <para>The strategy of the queue.</para>
               </enum>
               <enum name="QUEUECALLS">
                  <para>Number of calls currently in the queue.</para>
               </enum>
               <enum name="QUEUEHOLDTIME">
                  <para>Current average hold time.</para>
               </enum>
               <enum name="QUEUECOMPLETED">
                  <para>Number of completed calls for the queue.</para>
               </enum>
               <enum name="QUEUEABANDONED">
                  <para>Number of abandoned calls.</para>
               </enum>
               <enum name="QUEUESRVLEVEL">
                  <para>Queue service level.</para>
               </enum>
               <enum name="QUEUESRVLEVELPERF">
                  <para>Current service level performance.</para>
               </enum>
            </enumlist>
         </parameter>
      </syntax>
      <description>
         <para>Makes the following queue variables available.</para>
         <para>Returns <literal>0</literal> if queue is found and setqueuevar is defined, <literal>-1</literal> otherwise.</para>
      </description>
      <see-also>
         <ref type="application">Queue</ref>
         <ref type="application">QueueLog</ref>
         <ref type="application">AddQueueMember</ref>
         <ref type="application">RemoveQueueMember</ref>
         <ref type="application">PauseQueueMember</ref>
         <ref type="application">UnpauseQueueMember</ref>
         <ref type="function">QUEUE_VARIABLES</ref>
         <ref type="function">QUEUE_MEMBER</ref>
         <ref type="function">QUEUE_MEMBER_COUNT</ref>
         <ref type="function">QUEUE_EXISTS</ref>
         <ref type="function">QUEUE_WAITING_COUNT</ref>
         <ref type="function">QUEUE_MEMBER_LIST</ref>
         <ref type="function">QUEUE_MEMBER_PENALTY</ref>
      </see-also>
   </function>
   <function name="QUEUE_MEMBER" language="en_US">
      <synopsis>
         Count number of members answering a queue.
      </synopsis>
      <syntax>
         <parameter name="queuename" required="true" />
         <parameter name="option" required="true">
            <enumlist>
               <enum name="logged">
                  <para>Returns the number of logged-in members for the specified queue.</para>
               </enum>
               <enum name="free">
                  <para>Returns the number of logged-in members for the specified queue that either can take calls or are currently wrapping up after a previous call.</para>
               </enum>
               <enum name="ready">
                  <para>Returns the number of logged-in members for the specified queue that are immediately available to answer a call.</para>
               </enum>
               <enum name="count">
                  <para>Returns the total number of members for the specified queue.</para>
               </enum>
               <enum name="penalty">
                  <para>Gets or sets queue member penalty.</para>
               </enum>
               <enum name="paused">
                  <para>Gets or sets queue member paused status.</para>
               </enum>
               <enum name="ringinuse">
                  <para>Gets or sets queue member ringinuse.</para>
               </enum>
            </enumlist>
         </parameter>
         <parameter name="interface" required="false" />
      </syntax>
      <description>
         <para>Allows access to queue counts [R] and member information [R/W].</para>
         <para>
            <replaceable>queuename</replaceable> is required for all operations
            <replaceable>interface</replaceable> is required for all member operations.
         </para>
      </description>
      <see-also>
         <ref type="application">Queue</ref>
         <ref type="application">QueueLog</ref>
         <ref type="application">AddQueueMember</ref>
         <ref type="application">RemoveQueueMember</ref>
         <ref type="application">PauseQueueMember</ref>
         <ref type="application">UnpauseQueueMember</ref>
         <ref type="function">QUEUE_VARIABLES</ref>
         <ref type="function">QUEUE_MEMBER</ref>
         <ref type="function">QUEUE_MEMBER_COUNT</ref>
         <ref type="function">QUEUE_EXISTS</ref>
         <ref type="function">QUEUE_WAITING_COUNT</ref>
         <ref type="function">QUEUE_MEMBER_LIST</ref>
         <ref type="function">QUEUE_MEMBER_PENALTY</ref>
      </see-also>
   </function>
   <function name="QUEUE_MEMBER_COUNT" language="en_US">
      <synopsis>
         Count number of members answering a queue.
      </synopsis>
      <syntax>
         <parameter name="queuename" required="true" />
      </syntax>
      <description>
         <para>Returns the number of members currently associated with the specified <replaceable>queuename</replaceable>.</para>
         <warning><para>This function has been deprecated in favor of the <literal>QUEUE_MEMBER()</literal> function</para></warning>
      </description>
      <see-also>
         <ref type="application">Queue</ref>
         <ref type="application">QueueLog</ref>
         <ref type="application">AddQueueMember</ref>
         <ref type="application">RemoveQueueMember</ref>
         <ref type="application">PauseQueueMember</ref>
         <ref type="application">UnpauseQueueMember</ref>
         <ref type="function">QUEUE_VARIABLES</ref>
         <ref type="function">QUEUE_MEMBER</ref>
         <ref type="function">QUEUE_MEMBER_COUNT</ref>
         <ref type="function">QUEUE_EXISTS</ref>
         <ref type="function">QUEUE_WAITING_COUNT</ref>
         <ref type="function">QUEUE_MEMBER_LIST</ref>
         <ref type="function">QUEUE_MEMBER_PENALTY</ref>
      </see-also>
   </function>
   <function name="QUEUE_EXISTS" language="en_US">
      <synopsis>
         Check if a named queue exists on this server
      </synopsis>
      <syntax>
         <parameter name="queuename" />
      </syntax>
      <description>
         <para>Returns 1 if the specified queue exists, 0 if it does not</para>
      </description>
      <see-also>
         <ref type="application">Queue</ref>
         <ref type="application">QueueLog</ref>
         <ref type="application">AddQueueMember</ref>
         <ref type="application">RemoveQueueMember</ref>
         <ref type="application">PauseQueueMember</ref>
         <ref type="application">UnpauseQueueMember</ref>
         <ref type="function">QUEUE_VARIABLES</ref>
         <ref type="function">QUEUE_MEMBER</ref>
         <ref type="function">QUEUE_MEMBER_COUNT</ref>
         <ref type="function">QUEUE_EXISTS</ref>
         <ref type="function">QUEUE_WAITING_COUNT</ref>
         <ref type="function">QUEUE_MEMBER_LIST</ref>
         <ref type="function">QUEUE_MEMBER_PENALTY</ref>
      </see-also>
   </function>
   <function name="QUEUE_WAITING_COUNT" language="en_US">
      <synopsis>
         Count number of calls currently waiting in a queue.
      </synopsis>
      <syntax>
         <parameter name="queuename" />
      </syntax>
      <description>
         <para>Returns the number of callers currently waiting in the specified <replaceable>queuename</replaceable>.</para>
      </description>
      <see-also>
         <ref type="application">Queue</ref>
         <ref type="application">QueueLog</ref>
         <ref type="application">AddQueueMember</ref>
         <ref type="application">RemoveQueueMember</ref>
         <ref type="application">PauseQueueMember</ref>
         <ref type="application">UnpauseQueueMember</ref>
         <ref type="function">QUEUE_VARIABLES</ref>
         <ref type="function">QUEUE_MEMBER</ref>
         <ref type="function">QUEUE_MEMBER_COUNT</ref>
         <ref type="function">QUEUE_EXISTS</ref>
         <ref type="function">QUEUE_WAITING_COUNT</ref>
         <ref type="function">QUEUE_MEMBER_LIST</ref>
         <ref type="function">QUEUE_MEMBER_PENALTY</ref>
      </see-also>
   </function>
   <function name="QUEUE_MEMBER_LIST" language="en_US">
      <synopsis>
         Returns a list of interfaces on a queue.
      </synopsis>
      <syntax>
         <parameter name="queuename" required="true" />
      </syntax>
      <description>
         <para>Returns a comma-separated list of members associated with the specified <replaceable>queuename</replaceable>.</para>
      </description>
      <see-also>
         <ref type="application">Queue</ref>
         <ref type="application">QueueLog</ref>
         <ref type="application">AddQueueMember</ref>
         <ref type="application">RemoveQueueMember</ref>
         <ref type="application">PauseQueueMember</ref>
         <ref type="application">UnpauseQueueMember</ref>
         <ref type="function">QUEUE_VARIABLES</ref>
         <ref type="function">QUEUE_MEMBER</ref>
         <ref type="function">QUEUE_MEMBER_COUNT</ref>
         <ref type="function">QUEUE_EXISTS</ref>
         <ref type="function">QUEUE_WAITING_COUNT</ref>
         <ref type="function">QUEUE_MEMBER_LIST</ref>
         <ref type="function">QUEUE_MEMBER_PENALTY</ref>
      </see-also>
   </function>
   <function name="QUEUE_MEMBER_PENALTY" language="en_US">
      <synopsis>
         Gets or sets queue members penalty.
      </synopsis>
      <syntax>
         <parameter name="queuename" required="true" />
         <parameter name="interface" required="true" />
      </syntax>
      <description>
         <para>Gets or sets queue members penalty.</para>
         <warning><para>This function has been deprecated in favor of the <literal>QUEUE_MEMBER()</literal> function</para></warning>
      </description>
      <see-also>
         <ref type="application">Queue</ref>
         <ref type="application">QueueLog</ref>
         <ref type="application">AddQueueMember</ref>
         <ref type="application">RemoveQueueMember</ref>
         <ref type="application">PauseQueueMember</ref>
         <ref type="application">UnpauseQueueMember</ref>
         <ref type="function">QUEUE_VARIABLES</ref>
         <ref type="function">QUEUE_MEMBER</ref>
         <ref type="function">QUEUE_MEMBER_COUNT</ref>
         <ref type="function">QUEUE_EXISTS</ref>
         <ref type="function">QUEUE_WAITING_COUNT</ref>
         <ref type="function">QUEUE_MEMBER_LIST</ref>
         <ref type="function">QUEUE_MEMBER_PENALTY</ref>
      </see-also>
   </function>
   <manager name="Queues" language="en_US">
      <synopsis>
         Queues.
      </synopsis>
      <syntax>
      </syntax>
      <description>
      </description>
   </manager>
   <manager name="QueueStatus" language="en_US">
      <synopsis>
         Show queue status.
      </synopsis>
      <syntax>
         <xi:include xpointer="xpointer(/docs/manager[@name='Login']/syntax/parameter[@name='ActionID'])" />
         <parameter name="Queue" />
         <parameter name="Member" />
      </syntax>
      <description>
      </description>
   </manager>
   <manager name="QueueSummary" language="en_US">
      <synopsis>
         Show queue summary.
      </synopsis>
      <syntax>
         <xi:include xpointer="xpointer(/docs/manager[@name='Login']/syntax/parameter[@name='ActionID'])" />
         <parameter name="Queue" />
      </syntax>
      <description>
      </description>
   </manager>
   <manager name="QueueAdd" language="en_US">
      <synopsis>
         Add interface to queue.
      </synopsis>
      <syntax>
         <xi:include xpointer="xpointer(/docs/manager[@name='Login']/syntax/parameter[@name='ActionID'])" />
         <parameter name="Queue" required="true" />
         <parameter name="Interface" required="true" />
         <parameter name="Penalty" />
         <parameter name="Paused" />
         <parameter name="MemberName" />
         <parameter name="StateInterface" />
      </syntax>
      <description>
      </description>
   </manager>
   <manager name="QueueRemove" language="en_US">
      <synopsis>
         Remove interface from queue.
      </synopsis>
      <syntax>
         <xi:include xpointer="xpointer(/docs/manager[@name='Login']/syntax/parameter[@name='ActionID'])" />
         <parameter name="Queue" required="true" />
         <parameter name="Interface" required="true" />
      </syntax>
      <description>
      </description>
   </manager>
   <manager name="QueuePause" language="en_US">
      <synopsis>
         Makes a queue member temporarily unavailable.
      </synopsis>
      <syntax>
         <xi:include xpointer="xpointer(/docs/manager[@name='Login']/syntax/parameter[@name='ActionID'])" />
         <parameter name="Interface" required="true" />
         <parameter name="Paused" required="true" />
         <parameter name="Queue" />
         <parameter name="Reason" />
      </syntax>
      <description>
      </description>
   </manager>
   <manager name="QueueLog" language="en_US">
      <synopsis>
         Adds custom entry in queue_log.
      </synopsis>
      <syntax>
         <xi:include xpointer="xpointer(/docs/manager[@name='Login']/syntax/parameter[@name='ActionID'])" />
         <parameter name="Queue" required="true" />
         <parameter name="Event" required="true" />
         <parameter name="Uniqueid" />
         <parameter name="Interface" />
         <parameter name="Message" />
      </syntax>
      <description>
      </description>
   </manager>
   <manager name="QueuePenalty" language="en_US">
      <synopsis>
         Set the penalty for a queue member.
      </synopsis>
      <syntax>
         <xi:include xpointer="xpointer(/docs/manager[@name='Login']/syntax/parameter[@name='ActionID'])" />
         <parameter name="Interface" required="true" />
         <parameter name="Penalty" required="true" />
         <parameter name="Queue" />
      </syntax>
      <description>
      </description>
   </manager>

   <manager name="QueueMemberRingInUse" language="en_US">
      <synopsis>
         Set the ringinuse value for a queue member.
      </synopsis>
      <syntax>
         <xi:include xpointer="xpointer(/docs/manager[@name='Login']/syntax/parameter[@name='ActionID'])" />
         <parameter name="Interface" required="true" />
         <parameter name="RingInUse" required="true" />
         <parameter name="Queue" />
      </syntax>
      <description>
      </description>
   </manager>

   <manager name="QueueRule" language="en_US">
      <synopsis>
         Queue Rules.
      </synopsis>
      <syntax>
         <xi:include xpointer="xpointer(/docs/manager[@name='Login']/syntax/parameter[@name='ActionID'])" />
         <parameter name="Rule" />
      </syntax>
      <description>
      </description>
   </manager>
   <manager name="QueueReload" language="en_US">
      <synopsis>
         Reload a queue, queues, or any sub-section of a queue or queues.
      </synopsis>
      <syntax>
         <xi:include xpointer="xpointer(/docs/manager[@name='Login']/syntax/parameter[@name='ActionID'])" />
         <parameter name="Queue" />
         <parameter name="Members">
            <enumlist>
               <enum name="yes" />
               <enum name="no" />
            </enumlist>
         </parameter>
         <parameter name="Rules">
            <enumlist>
               <enum name="yes" />
               <enum name="no" />
            </enumlist>
         </parameter>
         <parameter name="Parameters">
            <enumlist>
               <enum name="yes" />
               <enum name="no" />
            </enumlist>
         </parameter>
      </syntax>
      <description>
      </description>
   </manager>
   <manager name="QueueReset" language="en_US">
      <synopsis>
         Reset queue statistics.
      </synopsis>
      <syntax>
         <xi:include xpointer="xpointer(/docs/manager[@name='Login']/syntax/parameter[@name='ActionID'])" />
         <parameter name="Queue" />
      </syntax>
      <description>
      </description>
   </manager>
 ***/

enum {
   OPT_MARK_AS_ANSWERED =       (1 << 0),
   OPT_GO_ON =                  (1 << 1),
   OPT_DATA_QUALITY =           (1 << 2),
   OPT_CALLEE_GO_ON =           (1 << 3),
   OPT_CALLEE_HANGUP =          (1 << 4),
   OPT_CALLER_HANGUP =          (1 << 5),
   OPT_IGNORE_CALL_FW =         (1 << 6),
   OPT_IGNORE_CONNECTEDLINE =   (1 << 7),
   OPT_CALLEE_PARK =            (1 << 8),
   OPT_CALLER_PARK =            (1 << 9),
   OPT_NO_RETRY =               (1 << 10),
   OPT_RINGING =                (1 << 11),
   OPT_RING_WHEN_RINGING =      (1 << 12),
   OPT_CALLEE_TRANSFER =        (1 << 13),
   OPT_CALLER_TRANSFER =        (1 << 14),
   OPT_CALLEE_AUTOMIXMON =      (1 << 15),
   OPT_CALLER_AUTOMIXMON =      (1 << 16),
   OPT_CALLEE_AUTOMON =         (1 << 17),
   OPT_CALLER_AUTOMON =         (1 << 18),
};

enum {
   OPT_ARG_CALLEE_GO_ON = 0,
   /* note: this entry _MUST_ be the last one in the enum */
   OPT_ARG_ARRAY_SIZE
};

AST_APP_OPTIONS(queue_exec_options, BEGIN_OPTIONS
   AST_APP_OPTION('C', OPT_MARK_AS_ANSWERED),
   AST_APP_OPTION('c', OPT_GO_ON),
   AST_APP_OPTION('d', OPT_DATA_QUALITY),
   AST_APP_OPTION_ARG('F', OPT_CALLEE_GO_ON, OPT_ARG_CALLEE_GO_ON),
   AST_APP_OPTION('h', OPT_CALLEE_HANGUP),
   AST_APP_OPTION('H', OPT_CALLER_HANGUP),
   AST_APP_OPTION('i', OPT_IGNORE_CALL_FW),
   AST_APP_OPTION('I', OPT_IGNORE_CONNECTEDLINE),
   AST_APP_OPTION('k', OPT_CALLEE_PARK),
   AST_APP_OPTION('K', OPT_CALLER_PARK),
   AST_APP_OPTION('n', OPT_NO_RETRY),
   AST_APP_OPTION('r', OPT_RINGING),
   AST_APP_OPTION('R', OPT_RING_WHEN_RINGING),
   AST_APP_OPTION('t', OPT_CALLEE_TRANSFER),
   AST_APP_OPTION('T', OPT_CALLER_TRANSFER),
   AST_APP_OPTION('x', OPT_CALLEE_AUTOMIXMON),
   AST_APP_OPTION('X', OPT_CALLER_AUTOMIXMON),
   AST_APP_OPTION('w', OPT_CALLEE_AUTOMON),
   AST_APP_OPTION('W', OPT_CALLER_AUTOMON),
END_OPTIONS);

enum {
   QUEUE_STRATEGY_RINGALL = 0,
   QUEUE_STRATEGY_LEASTRECENT,
   QUEUE_STRATEGY_FEWESTCALLS,
   QUEUE_STRATEGY_RANDOM,
   QUEUE_STRATEGY_RRMEMORY,
   QUEUE_STRATEGY_LINEAR,
   QUEUE_STRATEGY_WRANDOM,
   QUEUE_STRATEGY_RRORDERED,
};

enum {
     QUEUE_AUTOPAUSE_OFF = 0,
     QUEUE_AUTOPAUSE_ON,
     QUEUE_AUTOPAUSE_ALL
};

enum queue_reload_mask {
   QUEUE_RELOAD_PARAMETERS = (1 << 0),
   QUEUE_RELOAD_MEMBER = (1 << 1),
   QUEUE_RELOAD_RULES = (1 << 2),
   QUEUE_RESET_STATS = (1 << 3),
};

static const struct strategy {
   int strategy;
   const char *name;
} strategies[] = {
   { QUEUE_STRATEGY_RINGALL, "ringall" },
   { QUEUE_STRATEGY_LEASTRECENT, "leastrecent" },
   { QUEUE_STRATEGY_FEWESTCALLS, "fewestcalls" },
   { QUEUE_STRATEGY_RANDOM, "random" },
   { QUEUE_STRATEGY_RRMEMORY, "rrmemory" },
   { QUEUE_STRATEGY_RRMEMORY, "roundrobin" },
   { QUEUE_STRATEGY_LINEAR, "linear" },
   { QUEUE_STRATEGY_WRANDOM, "wrandom"},
   { QUEUE_STRATEGY_RRORDERED, "rrordered"},
};

static const struct autopause {
   int autopause;
   const char *name;
} autopausesmodes [] = {
   { QUEUE_AUTOPAUSE_OFF,"no" },
   { QUEUE_AUTOPAUSE_ON, "yes" },
   { QUEUE_AUTOPAUSE_ALL,"all" },
};


static struct ast_taskprocessor *devicestate_tps;

#define DEFAULT_RETRY      5
#define DEFAULT_TIMEOUT    15
#define RECHECK         1     /*!< Recheck every second to see we we're at the top yet */
#define MAX_PERIODIC_ANNOUNCEMENTS 10           /*!< The maximum periodic announcements we can have */
#define DEFAULT_MIN_ANNOUNCE_FREQUENCY 15       /*!< The minimum number of seconds between position announcements \
                                                     The default value of 15 provides backwards compatibility */
#define MAX_QUEUE_BUCKETS 53

#define  RES_OKAY 0     /*!< Action completed */
#define  RES_EXISTS  (-1)     /*!< Entry already exists */
#define  RES_OUTOFMEMORY   (-2)     /*!< Out of memory */
#define  RES_NOSUCHQUEUE   (-3)     /*!< No such queue */
#define RES_NOT_DYNAMIC (-4)     /*!< Member is not dynamic */

static char *app = "Queue";

static char *app_aqm = "AddQueueMember" ;

static char *app_rqm = "RemoveQueueMember" ;

static char *app_pqm = "PauseQueueMember" ;

static char *app_upqm = "UnpauseQueueMember" ;

static char *app_ql = "QueueLog" ;

/*! \brief Persistent Members astdb family */
static const char * const pm_family = "Queue/PersistentMembers";

/*! \brief queues.conf [general] option */
static int queue_persistent_members = 0;

/*! \brief queues.conf per-queue weight option */
static int use_weight = 0;

/*! \brief queues.conf [general] option */
static int autofill_default = 1;

/*! \brief queues.conf [general] option */
static int montype_default = 0;

/*! \brief queues.conf [general] option */
static int shared_lastcall = 1;

/*! \brief Subscription to device state change events */
static struct ast_event_sub *device_state_sub;

/*! \brief queues.conf [general] option */
static int update_cdr = 0;

/*! \brief queues.conf [general] option */
static int negative_penalty_invalid = 0;

/*! \brief queues.conf [general] option */
static int log_membername_as_agent = 0;

/*! \brief queues.conf [general] option */
static int check_state_unknown = 0;

/*! \brief name of the ringinuse field in the realtime database */
static char *realtime_ringinuse_field;

enum queue_result {
   QUEUE_UNKNOWN = 0,
   QUEUE_TIMEOUT = 1,
   QUEUE_JOINEMPTY = 2,
   QUEUE_LEAVEEMPTY = 3,
   QUEUE_JOINUNAVAIL = 4,
   QUEUE_LEAVEUNAVAIL = 5,
   QUEUE_FULL = 6,
   QUEUE_CONTINUE = 7,
};

static const struct {
   enum queue_result id;
   char *text;
} queue_results[] = {
   { QUEUE_UNKNOWN, "UNKNOWN" },
   { QUEUE_TIMEOUT, "TIMEOUT" },
   { QUEUE_JOINEMPTY,"JOINEMPTY" },
   { QUEUE_LEAVEEMPTY, "LEAVEEMPTY" },
   { QUEUE_JOINUNAVAIL, "JOINUNAVAIL" },
   { QUEUE_LEAVEUNAVAIL, "LEAVEUNAVAIL" },
   { QUEUE_FULL, "FULL" },
   { QUEUE_CONTINUE, "CONTINUE" },
};

enum queue_timeout_priority {
   TIMEOUT_PRIORITY_APP,
   TIMEOUT_PRIORITY_CONF,
};

/*! \brief We define a custom "local user" structure because we
 *  use it not only for keeping track of what is in use but
 *  also for keeping track of who we're dialing.
 *
 *  There are two "links" defined in this structure, q_next and call_next.
 *  q_next links ALL defined callattempt structures into a linked list. call_next is
 *  a link which allows for a subset of the callattempts to be traversed. This subset
 *  is used in wait_for_answer so that irrelevant callattempts are not traversed. This
 *  also is helpful so that queue logs are always accurate in the case where a call to 
 *  a member times out, especially if using the ringall strategy. 
*/

struct callattempt {
   struct callattempt *q_next;
   struct callattempt *call_next;
   struct ast_channel *chan;
   char interface[256];       /*!< An Asterisk dial string (not a channel name) */
   int metric;
   time_t lastcall;
   struct call_queue *lastqueue;
   struct member *member;
   /*! Saved connected party info from an AST_CONTROL_CONNECTED_LINE. */
   struct ast_party_connected_line connected;
   /*! TRUE if an AST_CONTROL_CONNECTED_LINE update was saved to the connected element. */
   unsigned int pending_connected_update:1;
   /*! TRUE if the connected line update is blocked. */
   unsigned int block_connected_update:1;
   /*! TRUE if caller id is not available for connected line */
   unsigned int dial_callerid_absent:1;
   /*! TRUE if the call is still active */
   unsigned int stillgoing:1;
   struct ast_aoc_decoded *aoc_s_rate_list;
};


struct queue_ent {
   struct call_queue *parent;             /*!< What queue is our parent */
   char moh[MAX_MUSICCLASS];              /*!< Name of musiconhold to be used */
   char announce[PATH_MAX];               /*!< Announcement to play for member when call is answered */
   char context[AST_MAX_CONTEXT];         /*!< Context when user exits queue */
   char digits[AST_MAX_EXTENSION];        /*!< Digits entered while in queue */
   int valid_digits;                      /*!< Digits entered correspond to valid extension. Exited */
   int pos;                               /*!< Where we are in the queue */
   int prio;                              /*!< Our priority */
   int last_pos_said;                     /*!< Last position we told the user */
   int ring_when_ringing;                 /*!< Should we only use ring indication when a channel is ringing? */
   time_t last_periodic_announce_time;    /*!< The last time we played a periodic announcement */
   int last_periodic_announce_sound;      /*!< The last periodic announcement we made */
   time_t last_pos;                       /*!< Last time we told the user their position */
   int opos;                              /*!< Where we started in the queue */
   int handled;                           /*!< Whether our call was handled */
   int pending;                           /*!< Non-zero if we are attempting to call a member */
   int max_penalty;                       /*!< Limit the members that can take this call to this penalty or lower */
   int min_penalty;                       /*!< Limit the members that can take this call to this penalty or higher */
   int linpos;                            /*!< If using linear strategy, what position are we at? */
   int linwrapped;                        /*!< Is the linpos wrapped? */
   time_t start;                          /*!< When we started holding */
   time_t expire;                         /*!< When this entry should expire (time out of queue) */
   int cancel_answered_elsewhere;          /*!< Whether we should force the CAE flag on this call (C) option*/
   struct ast_channel *chan;              /*!< Our channel */
   AST_LIST_HEAD_NOLOCK(,penalty_rule) qe_rules; /*!< Local copy of the queue's penalty rules */
   struct penalty_rule *pr;               /*!< Pointer to the next penalty rule to implement */
   struct queue_ent *next;                /*!< The next queue entry */
};

struct member {
   char interface[AST_CHANNEL_NAME];    /*!< Technology/Location to dial to reach this member*/
   char state_exten[AST_MAX_EXTENSION]; /*!< Extension to get state from (if using hint) */
   char state_context[AST_MAX_CONTEXT]; /*!< Context to use when getting state (if using hint) */
   char state_interface[AST_CHANNEL_NAME]; /*!< Technology/Location from which to read devicestate changes */
   char membername[80];                 /*!< Member name to use in queue logs */
   int penalty;                         /*!< Are we a last resort? */
   int calls;                           /*!< Number of calls serviced by this member */
   int dynamic;                         /*!< Are we dynamically added? */
   int realtime;                        /*!< Is this member realtime? */
   int status;                          /*!< Status of queue member */
   int paused;                          /*!< Are we paused (not accepting calls)? */
   time_t lastcall;                     /*!< When last successful call was hungup */
   struct call_queue *lastqueue;      /*!< Last queue we received a call */
   unsigned int dead:1;                 /*!< Used to detect members deleted in realtime */
   unsigned int delme:1;                /*!< Flag to delete entry on reload */
   char rt_uniqueid[80];                /*!< Unique id of realtime member entry */
   unsigned int ringinuse:1;            /*!< Flag to ring queue members even if their status is 'inuse' */
};

enum empty_conditions {
   QUEUE_EMPTY_PENALTY = (1 << 0),
   QUEUE_EMPTY_PAUSED = (1 << 1),
   QUEUE_EMPTY_INUSE = (1 << 2),
   QUEUE_EMPTY_RINGING = (1 << 3),
   QUEUE_EMPTY_UNAVAILABLE = (1 << 4),
   QUEUE_EMPTY_INVALID = (1 << 5),
   QUEUE_EMPTY_UNKNOWN = (1 << 6),
   QUEUE_EMPTY_WRAPUP = (1 << 7),
};

enum member_properties {
   MEMBER_PENALTY = 0,
   MEMBER_RINGINUSE = 1,
};

/* values used in multi-bit flags in call_queue */
#define ANNOUNCEHOLDTIME_ALWAYS 1
#define ANNOUNCEHOLDTIME_ONCE 2
#define QUEUE_EVENT_VARIABLES 3

struct penalty_rule {
   int time;                           /*!< Number of seconds that need to pass before applying this rule */
   int max_value;                      /*!< The amount specified in the penalty rule for max penalty */
   int min_value;                      /*!< The amount specified in the penalty rule for min penalty */
   int max_relative;                   /*!< Is the max adjustment relative? 1 for relative, 0 for absolute */
   int min_relative;                   /*!< Is the min adjustment relative? 1 for relative, 0 for absolute */
   AST_LIST_ENTRY(penalty_rule) list;  /*!< Next penalty_rule */
};

#define ANNOUNCEPOSITION_YES 1 /*!< We announce position */
#define ANNOUNCEPOSITION_NO 2 /*!< We don't announce position */
#define ANNOUNCEPOSITION_MORE_THAN 3 /*!< We say "Currently there are more than <limit>" */
#define ANNOUNCEPOSITION_LIMIT 4 /*!< We not announce position more than <limit> */

struct call_queue {
   AST_DECLARE_STRING_FIELDS(
      /*! Queue name */
      AST_STRING_FIELD(name);
      /*! Music on Hold class */
      AST_STRING_FIELD(moh);
      /*! Announcement to play when call is answered */
      AST_STRING_FIELD(announce);
      /*! Exit context */
      AST_STRING_FIELD(context);
      /*! Macro to run upon member connection */
      AST_STRING_FIELD(membermacro);
      /*! Gosub to run upon member connection */
      AST_STRING_FIELD(membergosub);
      /*! Default rule to use if none specified in call to Queue() */
      AST_STRING_FIELD(defaultrule);
      /*! Sound file: "Your call is now first in line" (def. queue-youarenext) */
      AST_STRING_FIELD(sound_next);
      /*! Sound file: "There are currently" (def. queue-thereare) */
      AST_STRING_FIELD(sound_thereare);
      /*! Sound file: "calls waiting to speak to a representative." (def. queue-callswaiting) */
      AST_STRING_FIELD(sound_calls);
      /*! Sound file: "Currently there are more than" (def. queue-quantity1) */
      AST_STRING_FIELD(queue_quantity1);
      /*! Sound file: "callers waiting to speak with a representative" (def. queue-quantity2) */
      AST_STRING_FIELD(queue_quantity2);
      /*! Sound file: "The current estimated total holdtime is" (def. queue-holdtime) */
      AST_STRING_FIELD(sound_holdtime);
      /*! Sound file: "minutes." (def. queue-minutes) */
      AST_STRING_FIELD(sound_minutes);
      /*! Sound file: "minute." (def. queue-minute) */
      AST_STRING_FIELD(sound_minute);
      /*! Sound file: "seconds." (def. queue-seconds) */
      AST_STRING_FIELD(sound_seconds);
      /*! Sound file: "Thank you for your patience." (def. queue-thankyou) */
      AST_STRING_FIELD(sound_thanks);
      /*! Sound file: Custom announce for caller, no default */
      AST_STRING_FIELD(sound_callerannounce);
      /*! Sound file: "Hold time" (def. queue-reporthold) */
      AST_STRING_FIELD(sound_reporthold);
   );
   /*! Sound files: Custom announce, no default */
   struct ast_str *sound_periodicannounce[MAX_PERIODIC_ANNOUNCEMENTS];
   unsigned int dead:1;
   unsigned int eventwhencalled:2;
   unsigned int ringinuse:1;
   unsigned int setinterfacevar:1;
   unsigned int setqueuevar:1;
   unsigned int setqueueentryvar:1;
   unsigned int reportholdtime:1;
   unsigned int wrapped:1;
   unsigned int timeoutrestart:1;
   unsigned int announceholdtime:2;
   unsigned int announceposition:3;
   int strategy:4;
   unsigned int maskmemberstatus:1;
   unsigned int realtime:1;
   unsigned int found:1;
   unsigned int relativeperiodicannounce:1;
   unsigned int autopausebusy:1;
   unsigned int autopauseunavail:1;
   enum empty_conditions joinempty;
   enum empty_conditions leavewhenempty;
   int announcepositionlimit;          /*!< How many positions we announce? */
   int announcefrequency;              /*!< How often to announce their position */
   int minannouncefrequency;           /*!< The minimum number of seconds between position announcements (def. 15) */
   int periodicannouncefrequency;      /*!< How often to play periodic announcement */
   int numperiodicannounce;            /*!< The number of periodic announcements configured */
   int randomperiodicannounce;         /*!< Are periodic announcments randomly chosen */
   int roundingseconds;                /*!< How many seconds do we round to? */
   int holdtime;                       /*!< Current avg holdtime, based on an exponential average */
   int talktime;                       /*!< Current avg talktime, based on the same exponential average */
   int callscompleted;                 /*!< Number of queue calls completed */
   int callsabandoned;                 /*!< Number of queue calls abandoned */
   int servicelevel;                   /*!< seconds setting for servicelevel*/
   int callscompletedinsl;             /*!< Number of calls answered with servicelevel*/
   char monfmt[8];                     /*!< Format to use when recording calls */
   int montype;                        /*!< Monitor type  Monitor vs. MixMonitor */
   int count;                          /*!< How many entries */
   int maxlen;                         /*!< Max number of entries */
   int wrapuptime;                     /*!< Wrapup Time */
   int penaltymemberslimit;            /*!< Disregard penalty when queue has fewer than this many members */

   int retry;                          /*!< Retry calling everyone after this amount of time */
   int timeout;                        /*!< How long to wait for an answer */
   int weight;                         /*!< Respective weight */
   int autopause;                      /*!< Auto pause queue members if they fail to answer */
   int autopausedelay;                 /*!< Delay auto pause for autopausedelay seconds since last call */
   int timeoutpriority;                /*!< Do we allow a fraction of the timeout to occur for a ring? */

   /* Queue strategy things */
   int rrpos;                          /*!< Round Robin - position */
   int memberdelay;                    /*!< Seconds to delay connecting member to caller */
   int autofill;                       /*!< Ignore the head call status and ring an available agent */
   
   struct ao2_container *members;             /*!< Head of the list of members */
   struct queue_ent *head;             /*!< Head of the list of callers */
   AST_LIST_ENTRY(call_queue) list;    /*!< Next call queue */
   AST_LIST_HEAD_NOLOCK(, penalty_rule) rules; /*!< The list of penalty rules to invoke */
};

struct rule_list {
   char name[80];
   AST_LIST_HEAD_NOLOCK(,penalty_rule) rules;
   AST_LIST_ENTRY(rule_list) list;
};

static AST_LIST_HEAD_STATIC(rule_lists, rule_list);

static struct ao2_container *queues;

static void update_realtime_members(struct call_queue *q);
static struct member *interface_exists(struct call_queue *q, const char *interface);
static int set_member_paused(const char *queuename, const char *interface, const char *reason, int paused);

static void queue_transfer_fixup(void *data, struct ast_channel *old_chan, struct ast_channel *new_chan);

static struct member *find_member_by_queuename_and_interface(const char *queuename, const char *interface);
/*! \brief sets the QUEUESTATUS channel variable */
static void set_queue_result(struct ast_channel *chan, enum queue_result res)
{
   int i;

   for (i = 0; i < ARRAY_LEN(queue_results); i++) {
      if (queue_results[i].id == res) {
         pbx_builtin_setvar_helper(chan, "QUEUESTATUS", queue_results[i].text);
         return;
      }
   }
}

static const char *int2strat(int strategy)
{
   int x;

   for (x = 0; x < ARRAY_LEN(strategies); x++) {
      if (strategy == strategies[x].strategy) {
         return strategies[x].name;
      }
   }

   return "<unknown>";
}

static int strat2int(const char *strategy)
{
   int x;

   for (x = 0; x < ARRAY_LEN(strategies); x++) {
      if (!strcasecmp(strategy, strategies[x].name)) {
         return strategies[x].strategy;
      }
   }

   return -1;
}

static int autopause2int(const char *autopause)
{
   int x;
   /*This 'double check' that default value is OFF */
   if (ast_strlen_zero(autopause)) {
      return QUEUE_AUTOPAUSE_OFF;
   }

   /*This 'double check' is to ensure old values works */
   if(ast_true(autopause)) {
      return QUEUE_AUTOPAUSE_ON;
   }

   for (x = 0; x < ARRAY_LEN(autopausesmodes); x++) {
      if (!strcasecmp(autopause, autopausesmodes[x].name)) {
         return autopausesmodes[x].autopause;
      }
   }

   /*This 'double check' that default value is OFF */
   return QUEUE_AUTOPAUSE_OFF;
}

static int queue_hash_cb(const void *obj, const int flags)
{
   const struct call_queue *q = obj;

   return ast_str_case_hash(q->name);
}

static int queue_cmp_cb(void *obj, void *arg, int flags)
{
   struct call_queue *q = obj, *q2 = arg;
   return !strcasecmp(q->name, q2->name) ? CMP_MATCH | CMP_STOP : 0;
}

#ifdef REF_DEBUG_ONLY_QUEUES
#define queue_ref(q)          _queue_ref(q, "", __FILE__, __LINE__, __PRETTY_FUNCTION__)
#define queue_unref(q)           _queue_unref(q, "", __FILE__, __LINE__, __PRETTY_FUNCTION__)
#define queue_t_ref(q, tag)         _queue_ref(q, tag, __FILE__, __LINE__, __PRETTY_FUNCTION__)
#define queue_t_unref(q, tag)    _queue_unref(q, tag, __FILE__, __LINE__, __PRETTY_FUNCTION__)
#define queues_t_link(c, q, tag) __ao2_link_debug(c, q, 0, tag, __FILE__, __LINE__, __PRETTY_FUNCTION__)
#define queues_t_unlink(c, q, tag)  __ao2_unlink_debug(c, q, 0, tag, __FILE__, __LINE__, __PRETTY_FUNCTION__)

static inline struct call_queue *_queue_ref(struct call_queue *q, const char *tag, const char *file, int line, const char *filename)
{
   __ao2_ref_debug(q, 1, tag, file, line, filename);
   return q;
}

static inline struct call_queue *_queue_unref(struct call_queue *q, const char *tag, const char *file, int line, const char *filename)
{
   __ao2_ref_debug(q, -1, tag, file, line, filename);
   return NULL;
}

#else

#define queue_t_ref(q, tag)         queue_ref(q)
#define queue_t_unref(q, tag)    queue_unref(q)
#define queues_t_link(c, q, tag) ao2_t_link(c, q, tag)
#define queues_t_unlink(c, q, tag)  ao2_t_unlink(c, q, tag)

static inline struct call_queue *queue_ref(struct call_queue *q)
{
   ao2_ref(q, 1);
   return q;
}

static inline struct call_queue *queue_unref(struct call_queue *q)
{
   ao2_ref(q, -1);
   return NULL;
}
#endif

/*! \brief Set variables of queue */
static void set_queue_variables(struct call_queue *q, struct ast_channel *chan)
{
   char interfacevar[256]="";
   float sl = 0;

   ao2_lock(q);

   if (q->setqueuevar) {
      sl = 0;
      if (q->callscompleted > 0) {
         sl = 100 * ((float) q->callscompletedinsl / (float) q->callscompleted);
      }

      snprintf(interfacevar, sizeof(interfacevar),
         "QUEUENAME=%s,QUEUEMAX=%d,QUEUESTRATEGY=%s,QUEUECALLS=%d,QUEUEHOLDTIME=%d,QUEUETALKTIME=%d,QUEUECOMPLETED=%d,QUEUEABANDONED=%d,QUEUESRVLEVEL=%d,QUEUESRVLEVELPERF=%2.1f",
         q->name, q->maxlen, int2strat(q->strategy), q->count, q->holdtime, q->talktime, q->callscompleted, q->callsabandoned,  q->servicelevel, sl);

      ao2_unlock(q);
   
      pbx_builtin_setvar_multiple(chan, interfacevar); 
   } else {
      ao2_unlock(q);
   }
}

/*! \brief Insert the 'new' entry after the 'prev' entry of queue 'q' */
static inline void insert_entry(struct call_queue *q, struct queue_ent *prev, struct queue_ent *new, int *pos)
{
   struct queue_ent *cur;

   if (!q || !new)
      return;
   if (prev) {
      cur = prev->next;
      prev->next = new;
   } else {
      cur = q->head;
      q->head = new;
   }
   new->next = cur;

   /* every queue_ent must have a reference to it's parent call_queue, this
    * reference does not go away until the end of the queue_ent's life, meaning
    * that even when the queue_ent leaves the call_queue this ref must remain. */
   queue_ref(q);
   new->parent = q;
   new->pos = ++(*pos);
   new->opos = *pos;
}

/*! \brief Check if members are available
 *
 * This function checks to see if members are available to be called. If any member
 * is available, the function immediately returns 0. If no members are available,
 * then -1 is returned.
 */
static int get_member_status(struct call_queue *q, int max_penalty, int min_penalty, enum empty_conditions conditions)
{
   struct member *member;
   struct ao2_iterator mem_iter;

   ao2_lock(q);
   mem_iter = ao2_iterator_init(q->members, 0);
   for (; (member = ao2_iterator_next(&mem_iter)); ao2_ref(member, -1)) {
      if ((max_penalty && (member->penalty > max_penalty)) || (min_penalty && (member->penalty < min_penalty))) {
         if (conditions & QUEUE_EMPTY_PENALTY) {
            ast_debug(4, "%s is unavailable because his penalty is not between %d and %d\n", member->membername, min_penalty, max_penalty);
            continue;
         }
      }

      switch (member->status) {
      case AST_DEVICE_INVALID:
         if (conditions & QUEUE_EMPTY_INVALID) {
            ast_debug(4, "%s is unavailable because his device state is 'invalid'\n", member->membername);
            break;
         }
         goto default_case;
      case AST_DEVICE_UNAVAILABLE:
         if (conditions & QUEUE_EMPTY_UNAVAILABLE) {
            ast_debug(4, "%s is unavailable because his device state is 'unavailable'\n", member->membername);
            break;
         }
         goto default_case;
      case AST_DEVICE_INUSE:
         if (conditions & QUEUE_EMPTY_INUSE) {
            ast_debug(4, "%s is unavailable because his device state is 'inuse'\n", member->membername);
            break;
         }
         goto default_case;
      case AST_DEVICE_RINGING:
         if (conditions & QUEUE_EMPTY_RINGING) {
            ast_debug(4, "%s is unavailable because his device state is 'ringing'\n", member->membername);
            break;
         }
         goto default_case;
      case AST_DEVICE_UNKNOWN:
         if (conditions & QUEUE_EMPTY_UNKNOWN) {
            ast_debug(4, "%s is unavailable because his device state is 'unknown'\n", member->membername);
            break;
         }
         /* Fall-through */
      default:
      default_case:
         if (member->paused && (conditions & QUEUE_EMPTY_PAUSED)) {
            ast_debug(4, "%s is unavailable because he is paused'\n", member->membername);
            break;
         } else if ((conditions & QUEUE_EMPTY_WRAPUP) && member->lastcall && q->wrapuptime && (time(NULL) - q->wrapuptime < member->lastcall)) {
            ast_debug(4, "%s is unavailable because it has only been %d seconds since his last call (wrapup time is %d)\n", member->membername, (int) (time(NULL) - member->lastcall), q->wrapuptime);
            break;
         } else {
            ao2_ref(member, -1);
            ao2_iterator_destroy(&mem_iter);
            ao2_unlock(q);
            ast_debug(4, "%s is available.\n", member->membername);
            return 0;
         }
         break;
      }
   }
   ao2_iterator_destroy(&mem_iter);

   ao2_unlock(q);
   return -1;
}

struct statechange {
   AST_LIST_ENTRY(statechange) entry;
   int state;
   char dev[0];
};

/*! \brief set a member's status based on device state of that member's state_interface.
 *
 * Lock interface list find sc, iterate through each queues queue_member list for member to
 * update state inside queues
*/
static int update_status(struct call_queue *q, struct member *m, const int status)
{
   m->status = status;

   if (q->maskmemberstatus) {
      return 0;
   }

   /*** DOCUMENTATION
   <managerEventInstance>
      <synopsis>Raised when a Queue member's status has changed.</synopsis>
      <syntax>
         <parameter name="Queue">
            <para>The name of the queue.</para>
         </parameter>
         <parameter name="Location">
            <para>The queue member's channel technology or location.</para>
         </parameter>
         <parameter name="MemberName">
            <para>The name of the queue member.</para>
         </parameter>
         <parameter name="StateInterface">
            <para>Channel technology or location from which to read device state changes.</para>
         </parameter>
         <parameter name="Membership">
            <enumlist>
               <enum name="dynamic"/>
               <enum name="realtime"/>
               <enum name="static"/>
            </enumlist>
         </parameter>
         <parameter name="Penalty">
            <para>The penalty associated with the queue member.</para>
         </parameter>
         <parameter name="CallsTaken">
            <para>The number of calls this queue member has serviced.</para>
         </parameter>
         <parameter name="LastCall">
            <para>The time this member last took call, expressed in seconds since 00:00, Jan 1, 1970 UTC.</para>
         </parameter>
         <parameter name="Status">
            <para>The numeric device state status of the queue member.</para>
            <enumlist>
               <enum name="0"><para>AST_DEVICE_UNKNOWN</para></enum>
               <enum name="1"><para>AST_DEVICE_NOT_INUSE</para></enum>
               <enum name="2"><para>AST_DEVICE_INUSE</para></enum>
               <enum name="3"><para>AST_DEVICE_BUSY</para></enum>
               <enum name="4"><para>AST_DEVICE_INVALID</para></enum>
               <enum name="5"><para>AST_DEVICE_UNAVAILABLE</para></enum>
               <enum name="6"><para>AST_DEVICE_RINGING</para></enum>
               <enum name="7"><para>AST_DEVICE_RINGINUSE</para></enum>
               <enum name="8"><para>AST_DEVICE_ONHOLD</para></enum>
            </enumlist>
         </parameter>
         <parameter name="Paused">
            <enumlist>
               <enum name="0"/>
               <enum name="1"/>
            </enumlist>
         </parameter>
      </syntax>
   </managerEventInstance>
   ***/
   manager_event(EVENT_FLAG_AGENT, "QueueMemberStatus",
      "Queue: %s\r\n"
      "Location: %s\r\n"
      "MemberName: %s\r\n"
      "StateInterface: %s\r\n"
      "Membership: %s\r\n"
      "Penalty: %d\r\n"
      "CallsTaken: %d\r\n"
      "LastCall: %d\r\n"
      "Status: %d\r\n"
      "Paused: %d\r\n",
      q->name, m->interface, m->membername, m->state_interface, m->dynamic ? "dynamic" : m->realtime ? "realtime" : "static",
      m->penalty, m->calls, (int)m->lastcall, m->status, m->paused
   );

   return 0;
}

/*!
 * \internal \brief Determine if a queue member is available
 * \retval 1 if the member is available
 * \retval 0 if the member is not available
 */
static int is_member_available(struct member *mem)
{
   int available = 0;

   switch (mem->status) {
      case AST_DEVICE_INVALID:
      case AST_DEVICE_UNAVAILABLE:
         break;
      case AST_DEVICE_INUSE:
      case AST_DEVICE_BUSY:
      case AST_DEVICE_RINGING:
      case AST_DEVICE_RINGINUSE:
      case AST_DEVICE_ONHOLD:
         if (!mem->ringinuse) {
            break;
         }
         /* else fall through */
      case AST_DEVICE_NOT_INUSE:
      case AST_DEVICE_UNKNOWN:
         if (!mem->paused) {
            available = 1;
         }
         break;
   }

   return available;
}

/*! \brief set a member's status based on device state of that member's interface*/
static int handle_statechange(void *datap)
{
   struct statechange *sc = datap;
   struct ao2_iterator miter, qiter;
   struct member *m;
   struct call_queue *q;
   char interface[80], *slash_pos;
   int found = 0;       /* Found this member in any queue */
   int found_member;    /* Found this member in this queue */
   int avail = 0;       /* Found an available member in this queue */

   qiter = ao2_iterator_init(queues, 0);
   while ((q = ao2_t_iterator_next(&qiter, "Iterate over queues"))) {
      ao2_lock(q);

      avail = 0;
      found_member = 0;
      miter = ao2_iterator_init(q->members, 0);
      for (; (m = ao2_iterator_next(&miter)); ao2_ref(m, -1)) {
         if (!found_member) {
            ast_copy_string(interface, m->state_interface, sizeof(interface));

            if ((slash_pos = strchr(interface, '/'))) {
               if (!strncasecmp(interface, "Local/", 6) && (slash_pos = strchr(slash_pos + 1, '/'))) {
                  *slash_pos = '\0';
               }
            }

            if (!strcasecmp(interface, sc->dev)) {
               found_member = 1;
               update_status(q, m, sc->state);
            }
         }

         /* check every member until we find one NOT_INUSE */
         if (!avail) {
            avail = is_member_available(m);
         }
         if (avail && found_member) {
            /* early exit as we've found an available member and the member of interest */
            ao2_ref(m, -1);
            break;
         }
      }

      if (found_member) {
         found = 1;
         if (avail) {
            ast_devstate_changed(AST_DEVICE_NOT_INUSE, "Queue:%s_avail", q->name);
         } else {
            ast_devstate_changed(AST_DEVICE_INUSE, "Queue:%s_avail", q->name);
         }
      }

      ao2_iterator_destroy(&miter);

      ao2_unlock(q);
      queue_t_unref(q, "Done with iterator");
   }
   ao2_iterator_destroy(&qiter);

   if (found) {
      ast_debug(1, "Device '%s' changed to state '%d' (%s)\n", sc->dev, sc->state, ast_devstate2str(sc->state));
   } else {
      ast_debug(3, "Device '%s' changed to state '%d' (%s) but we don't care because they're not a member of any queue.\n", sc->dev, sc->state, ast_devstate2str(sc->state));
   }

   ast_free(sc);
   return 0;
}

static void device_state_cb(const struct ast_event *event, void *unused)
{
   enum ast_device_state state;
   const char *device;
   struct statechange *sc;
   size_t datapsize;

   state = ast_event_get_ie_uint(event, AST_EVENT_IE_STATE);
   device = ast_event_get_ie_str(event, AST_EVENT_IE_DEVICE);

   if (ast_strlen_zero(device)) {
      ast_log(LOG_ERROR, "Received invalid event that had no device IE\n");
      return;
   }
   datapsize = sizeof(*sc) + strlen(device) + 1;
   if (!(sc = ast_calloc(1, datapsize))) {
      ast_log(LOG_ERROR, "failed to calloc a state change struct\n");
      return;
   }
   sc->state = state;
   strcpy(sc->dev, device);
   if (ast_taskprocessor_push(devicestate_tps, handle_statechange, sc) < 0) {
      ast_free(sc);
   }
}

/*! \brief Helper function which converts from extension state to device state values */
static int extensionstate2devicestate(int state)
{
   switch (state) {
   case AST_EXTENSION_NOT_INUSE:
      state = AST_DEVICE_NOT_INUSE;
      break;
   case AST_EXTENSION_INUSE:
      state = AST_DEVICE_INUSE;
      break;
   case AST_EXTENSION_BUSY:
      state = AST_DEVICE_BUSY;
      break;
   case AST_EXTENSION_RINGING:
      state = AST_DEVICE_RINGING;
      break;
   case AST_EXTENSION_ONHOLD:
      state = AST_DEVICE_ONHOLD;
      break;
   case AST_EXTENSION_UNAVAILABLE:
      state = AST_DEVICE_UNAVAILABLE;
      break;
   case AST_EXTENSION_REMOVED:
   case AST_EXTENSION_DEACTIVATED:
   default:
      state = AST_DEVICE_INVALID;
      break;
   }

   return state;
}

static int extension_state_cb(char *context, char *exten, struct ast_state_cb_info *info, void *data)
{
   struct ao2_iterator miter, qiter;
   struct member *m;
   struct call_queue *q;
   int state = info->exten_state;
   int found = 0, device_state = extensionstate2devicestate(state);

   /* only interested in extension state updates involving device states */
   if (info->reason != AST_HINT_UPDATE_DEVICE) {
      return 0;
   }

   qiter = ao2_iterator_init(queues, 0);
   while ((q = ao2_t_iterator_next(&qiter, "Iterate through queues"))) {
      ao2_lock(q);

      miter = ao2_iterator_init(q->members, 0);
      for (; (m = ao2_iterator_next(&miter)); ao2_ref(m, -1)) {
         if (!strcmp(m->state_context, context) && !strcmp(m->state_exten, exten)) {
            update_status(q, m, device_state);
            ao2_ref(m, -1);
            found = 1;
            break;
         }
      }
      ao2_iterator_destroy(&miter);

      ao2_unlock(q);
      queue_t_unref(q, "Done with iterator");
   }
   ao2_iterator_destroy(&qiter);

        if (found) {
      ast_debug(1, "Extension '%s@%s' changed to state '%d' (%s)\n", exten, context, device_state, ast_devstate2str(device_state));
   } else {
      ast_debug(3, "Extension '%s@%s' changed to state '%d' (%s) but we don't care because they're not a member of any queue.\n",
           exten, context, device_state, ast_devstate2str(device_state));
   }

   return 0;
}

/*! \brief Return the current state of a member */
static int get_queue_member_status(struct member *cur)
{
   return ast_strlen_zero(cur->state_exten) ? ast_device_state(cur->state_interface) : extensionstate2devicestate(ast_extension_state(NULL, cur->state_context, cur->state_exten));
}

/*! \brief allocate space for new queue member and set fields based on parameters passed */
static struct member *create_queue_member(const char *interface, const char *membername, int penalty, int paused, const char *state_interface, int ringinuse)
{
   struct member *cur;

   if ((cur = ao2_alloc(sizeof(*cur), NULL))) {
      cur->ringinuse = ringinuse;
      cur->penalty = penalty;
      cur->paused = paused;
      ast_copy_string(cur->interface, interface, sizeof(cur->interface));
      if (!ast_strlen_zero(state_interface)) {
         ast_copy_string(cur->state_interface, state_interface, sizeof(cur->state_interface));
      } else {
         ast_copy_string(cur->state_interface, interface, sizeof(cur->state_interface));
      }
      if (!ast_strlen_zero(membername)) {
         ast_copy_string(cur->membername, membername, sizeof(cur->membername));
      } else {
         ast_copy_string(cur->membername, interface, sizeof(cur->membername));
      }
      if (!strchr(cur->interface, '/')) {
         ast_log(LOG_WARNING, "No location at interface '%s'\n", interface);
      }
      if (!strncmp(cur->state_interface, "hint:", 5)) {
         char *tmp = ast_strdupa(cur->state_interface), *context = tmp;
         char *exten = strsep(&context, "@") + 5;

         ast_copy_string(cur->state_exten, exten, sizeof(cur->state_exten));
         ast_copy_string(cur->state_context, S_OR(context, "default"), sizeof(cur->state_context));
      }
      cur->status = get_queue_member_status(cur);
   }

   return cur;
}


static int compress_char(const char c)
{
   if (c < 32) {
      return 0;
   } else if (c > 96) {
      return c - 64;
   } 
   return c - 32;
}

static int member_hash_fn(const void *obj, const int flags)
{
   const struct member *mem = obj;
   const char *interface = (flags & OBJ_KEY) ? obj : mem->interface;
   const char *chname = strchr(interface, '/');
   int ret = 0, i;

   if (!chname) {
      chname = interface;
   }
   for (i = 0; i < 5 && chname[i]; i++) {
      ret += compress_char(chname[i]) << (i * 6);
   }
   return ret;
}

static int member_cmp_fn(void *obj1, void *obj2, int flags)
{
   struct member *mem1 = obj1;
   struct member *mem2 = obj2;
   const char *interface = (flags & OBJ_KEY) ? obj2 : mem2->interface;

   return strcasecmp(mem1->interface, interface) ? 0 : CMP_MATCH | CMP_STOP;
}

/*!
 * \brief Initialize Queue default values.
 * \note the queue's lock  must be held before executing this function
*/
static void init_queue(struct call_queue *q)
{
   int i;
   struct penalty_rule *pr_iter;

   q->dead = 0;
   q->retry = DEFAULT_RETRY;
   q->timeout = DEFAULT_TIMEOUT;
   q->maxlen = 0;
   q->announcefrequency = 0;
   q->minannouncefrequency = DEFAULT_MIN_ANNOUNCE_FREQUENCY;
   q->announceholdtime = 1;
   q->announcepositionlimit = 10; /* Default 10 positions */
   q->announceposition = ANNOUNCEPOSITION_YES; /* Default yes */
   q->roundingseconds = 0; /* Default - don't announce seconds */
   q->servicelevel = 0;
   q->ringinuse = 1;
   q->setinterfacevar = 0;
   q->setqueuevar = 0;
   q->setqueueentryvar = 0;
   q->autofill = autofill_default;
   q->montype = montype_default;
   q->monfmt[0] = '\0';
   q->reportholdtime = 0;
   q->wrapuptime = 0;
   q->penaltymemberslimit = 0;
   q->joinempty = 0;
   q->leavewhenempty = 0;
   q->memberdelay = 0;
   q->maskmemberstatus = 0;
   q->eventwhencalled = 0;
   q->weight = 0;
   q->timeoutrestart = 0;
   q->periodicannouncefrequency = 0;
   q->randomperiodicannounce = 0;
   q->numperiodicannounce = 0;
   q->autopause = QUEUE_AUTOPAUSE_OFF;
   q->timeoutpriority = TIMEOUT_PRIORITY_APP;
   q->autopausedelay = 0;
   if (!q->members) {
      if (q->strategy == QUEUE_STRATEGY_LINEAR || q->strategy == QUEUE_STRATEGY_RRORDERED) {
         /* linear strategy depends on order, so we have to place all members in a single bucket */
         q->members = ao2_container_alloc(1, member_hash_fn, member_cmp_fn);
      } else {
         q->members = ao2_container_alloc(37, member_hash_fn, member_cmp_fn);
      }
   }
   q->found = 1;

   ast_string_field_set(q, sound_next, "queue-youarenext");
   ast_string_field_set(q, sound_thereare, "queue-thereare");
   ast_string_field_set(q, sound_calls, "queue-callswaiting");
   ast_string_field_set(q, queue_quantity1, "queue-quantity1");
   ast_string_field_set(q, queue_quantity2, "queue-quantity2");
   ast_string_field_set(q, sound_holdtime, "queue-holdtime");
   ast_string_field_set(q, sound_minutes, "queue-minutes");
   ast_string_field_set(q, sound_minute, "queue-minute");
   ast_string_field_set(q, sound_seconds, "queue-seconds");
   ast_string_field_set(q, sound_thanks, "queue-thankyou");
   ast_string_field_set(q, sound_reporthold, "queue-reporthold");

   if (!q->sound_periodicannounce[0]) {
      q->sound_periodicannounce[0] = ast_str_create(32);
   }

   if (q->sound_periodicannounce[0]) {
      ast_str_set(&q->sound_periodicannounce[0], 0, "queue-periodic-announce");
   }

   for (i = 1; i < MAX_PERIODIC_ANNOUNCEMENTS; i++) {
      if (q->sound_periodicannounce[i]) {
         ast_str_set(&q->sound_periodicannounce[i], 0, "%s", "");
      }
   }

   while ((pr_iter = AST_LIST_REMOVE_HEAD(&q->rules,list))) {
      ast_free(pr_iter);
   }

   /* On restart assume no members are available.
    * The queue_avail hint is a boolean state to indicate whether a member is available or not.
    *
    * This seems counter intuitive, but is required to light a BLF
    * AST_DEVICE_INUSE indicates no members are available.
    * AST_DEVICE_NOT_INUSE indicates a member is available.
    */
   ast_devstate_changed(AST_DEVICE_INUSE, "Queue:%s_avail", q->name);
}

static void clear_queue(struct call_queue *q)
{
   q->holdtime = 0;
   q->callscompleted = 0;
   q->callsabandoned = 0;
   q->callscompletedinsl = 0;
   q->talktime = 0;

   if (q->members) {
      struct member *mem;
      struct ao2_iterator mem_iter = ao2_iterator_init(q->members, 0);
      while ((mem = ao2_iterator_next(&mem_iter))) {
         mem->calls = 0;
         mem->lastcall = 0;
         ao2_ref(mem, -1);
      }
      ao2_iterator_destroy(&mem_iter);
   }
}

/*!
 * \brief Change queue penalty by adding rule.
 *
 * Check rule for errors with time or fomatting, see if rule is relative to rest
 * of queue, iterate list of rules to find correct insertion point, insert and return.
 * \retval -1 on failure
 * \retval 0 on success
 * \note Call this with the rule_lists locked
*/
static int insert_penaltychange(const char *list_name, const char *content, const int linenum)
{
   char *timestr, *maxstr, *minstr, *contentdup;
   struct penalty_rule *rule = NULL, *rule_iter;
   struct rule_list *rl_iter;
   int penaltychangetime, inserted = 0;

   if (!(rule = ast_calloc(1, sizeof(*rule)))) {
      return -1;
   }

   contentdup = ast_strdupa(content);
   
   if (!(maxstr = strchr(contentdup, ','))) {
      ast_log(LOG_WARNING, "Improperly formatted penaltychange rule at line %d. Ignoring.\n", linenum);
      ast_free(rule);
      return -1;
   }

   *maxstr++ = '\0';
   timestr = contentdup;

   if ((penaltychangetime = atoi(timestr)) < 0) {
      ast_log(LOG_WARNING, "Improper time parameter specified for penaltychange rule at line %d. Ignoring.\n", linenum);
      ast_free(rule);
      return -1;
   }

   rule->time = penaltychangetime;

   if ((minstr = strchr(maxstr,','))) {
      *minstr++ = '\0';
   }
   
   /* The last check will evaluate true if either no penalty change is indicated for a given rule
    * OR if a min penalty change is indicated but no max penalty change is */
   if (*maxstr == '+' || *maxstr == '-' || *maxstr == '\0') {
      rule->max_relative = 1;
   }

   rule->max_value = atoi(maxstr);

   if (!ast_strlen_zero(minstr)) {
      if (*minstr == '+' || *minstr == '-') {
         rule->min_relative = 1;
      }
      rule->min_value = atoi(minstr);
   } else { /*there was no minimum specified, so assume this means no change*/
      rule->min_relative = 1;
   }

   /*We have the rule made, now we need to insert it where it belongs*/
   AST_LIST_TRAVERSE(&rule_lists, rl_iter, list){
      if (strcasecmp(rl_iter->name, list_name)) {
         continue;
      }

      AST_LIST_TRAVERSE_SAFE_BEGIN(&rl_iter->rules, rule_iter, list) {
         if (rule->time < rule_iter->time) {
            AST_LIST_INSERT_BEFORE_CURRENT(rule, list);
            inserted = 1;
            break;
         }
      }
      AST_LIST_TRAVERSE_SAFE_END;
   
      if (!inserted) {
         AST_LIST_INSERT_TAIL(&rl_iter->rules, rule, list);
         inserted = 1;
      }

      break;
   }

   if (!inserted) {
      ast_log(LOG_WARNING, "Unknown rule list name %s; ignoring.\n", list_name);
      ast_free(rule);
      return -1;
   }
   return 0;
}

static void parse_empty_options(const char *value, enum empty_conditions *empty, int joinempty)
{
   char *value_copy = ast_strdupa(value);
   char *option = NULL;
   while ((option = strsep(&value_copy, ","))) {
      if (!strcasecmp(option, "paused")) {
         *empty |= QUEUE_EMPTY_PAUSED;
      } else if (!strcasecmp(option, "penalty")) {
         *empty |= QUEUE_EMPTY_PENALTY;
      } else if (!strcasecmp(option, "inuse")) {
         *empty |= QUEUE_EMPTY_INUSE;
      } else if (!strcasecmp(option, "ringing")) {
         *empty |= QUEUE_EMPTY_RINGING;
      } else if (!strcasecmp(option, "invalid")) {
         *empty |= QUEUE_EMPTY_INVALID;
      } else if (!strcasecmp(option, "wrapup")) {
         *empty |= QUEUE_EMPTY_WRAPUP;
      } else if (!strcasecmp(option, "unavailable")) {
         *empty |= QUEUE_EMPTY_UNAVAILABLE;
      } else if (!strcasecmp(option, "unknown")) {
         *empty |= QUEUE_EMPTY_UNKNOWN;
      } else if (!strcasecmp(option, "loose")) {
         *empty = (QUEUE_EMPTY_PENALTY | QUEUE_EMPTY_INVALID);
      } else if (!strcasecmp(option, "strict")) {
         *empty = (QUEUE_EMPTY_PENALTY | QUEUE_EMPTY_INVALID | QUEUE_EMPTY_PAUSED | QUEUE_EMPTY_UNAVAILABLE);
      } else if ((ast_false(option) && joinempty) || (ast_true(option) && !joinempty)) {
         *empty = (QUEUE_EMPTY_PENALTY | QUEUE_EMPTY_INVALID | QUEUE_EMPTY_PAUSED);
      } else if ((ast_false(option) && !joinempty) || (ast_true(option) && joinempty)) {
         *empty = 0;
      } else {
         ast_log(LOG_WARNING, "Unknown option %s for '%s'\n", option, joinempty ? "joinempty" : "leavewhenempty");
      }
   }
}

/*! \brief Configure a queue parameter.
 * 
 * The failunknown flag is set for config files (and static realtime) to show
 * errors for unknown parameters. It is cleared for dynamic realtime to allow
 *  extra fields in the tables.
 * \note For error reporting, line number is passed for .conf static configuration,
 * for Realtime queues, linenum is -1.
*/
static void queue_set_param(struct call_queue *q, const char *param, const char *val, int linenum, int failunknown)
{
   if (!strcasecmp(param, "musicclass") || 
      !strcasecmp(param, "music") || !strcasecmp(param, "musiconhold")) {
      ast_string_field_set(q, moh, val);
   } else if (!strcasecmp(param, "announce")) {
      ast_string_field_set(q, announce, val);
   } else if (!strcasecmp(param, "context")) {
      ast_string_field_set(q, context, val);
   } else if (!strcasecmp(param, "timeout")) {
      q->timeout = atoi(val);
      if (q->timeout < 0) {
         q->timeout = DEFAULT_TIMEOUT;
      }
   } else if (!strcasecmp(param, "ringinuse")) {
      q->ringinuse = ast_true(val);
   } else if (!strcasecmp(param, "setinterfacevar")) {
      q->setinterfacevar = ast_true(val);
   } else if (!strcasecmp(param, "setqueuevar")) {
      q->setqueuevar = ast_true(val);
   } else if (!strcasecmp(param, "setqueueentryvar")) {
      q->setqueueentryvar = ast_true(val);
   } else if (!strcasecmp(param, "monitor-format")) {
      ast_copy_string(q->monfmt, val, sizeof(q->monfmt));
   } else if (!strcasecmp(param, "membermacro")) {
      ast_string_field_set(q, membermacro, val);
   } else if (!strcasecmp(param, "membergosub")) {
      ast_string_field_set(q, membergosub, val);
   } else if (!strcasecmp(param, "queue-youarenext")) {
      ast_string_field_set(q, sound_next, val);
   } else if (!strcasecmp(param, "queue-thereare")) {
      ast_string_field_set(q, sound_thereare, val);
   } else if (!strcasecmp(param, "queue-callswaiting")) {
      ast_string_field_set(q, sound_calls, val);
   } else if (!strcasecmp(param, "queue-quantity1")) {
      ast_string_field_set(q, queue_quantity1, val);
   } else if (!strcasecmp(param, "queue-quantity2")) {
      ast_string_field_set(q, queue_quantity2, val);
   } else if (!strcasecmp(param, "queue-holdtime")) {
      ast_string_field_set(q, sound_holdtime, val);
   } else if (!strcasecmp(param, "queue-minutes")) {
      ast_string_field_set(q, sound_minutes, val);
   } else if (!strcasecmp(param, "queue-minute")) {
      ast_string_field_set(q, sound_minute, val);
   } else if (!strcasecmp(param, "queue-seconds")) {
      ast_string_field_set(q, sound_seconds, val);
   } else if (!strcasecmp(param, "queue-thankyou")) {
      ast_string_field_set(q, sound_thanks, val);
   } else if (!strcasecmp(param, "queue-callerannounce")) {
      ast_string_field_set(q, sound_callerannounce, val);
   } else if (!strcasecmp(param, "queue-reporthold")) {
      ast_string_field_set(q, sound_reporthold, val);
   } else if (!strcasecmp(param, "announce-frequency")) {
      q->announcefrequency = atoi(val);
   } else if (!strcasecmp(param, "min-announce-frequency")) {
      q->minannouncefrequency = atoi(val);
      ast_debug(1, "%s=%s for queue '%s'\n", param, val, q->name);
   } else if (!strcasecmp(param, "announce-round-seconds")) {
      q->roundingseconds = atoi(val);
      /* Rounding to any other values just doesn't make sense... */
      if (!(q->roundingseconds == 0 || q->roundingseconds == 5 || q->roundingseconds == 10
         || q->roundingseconds == 15 || q->roundingseconds == 20 || q->roundingseconds == 30)) {
         if (linenum >= 0) {
            ast_log(LOG_WARNING, "'%s' isn't a valid value for %s "
               "using 0 instead for queue '%s' at line %d of queues.conf\n",
               val, param, q->name, linenum);
         } else {
            ast_log(LOG_WARNING, "'%s' isn't a valid value for %s "
               "using 0 instead for queue '%s'\n", val, param, q->name);
         }
         q->roundingseconds=0;
      }
   } else if (!strcasecmp(param, "announce-holdtime")) {
      if (!strcasecmp(val, "once")) {
         q->announceholdtime = ANNOUNCEHOLDTIME_ONCE;
      } else if (ast_true(val)) {
         q->announceholdtime = ANNOUNCEHOLDTIME_ALWAYS;
      } else {
         q->announceholdtime = 0;
      }
   } else if (!strcasecmp(param, "announce-position")) {
      if (!strcasecmp(val, "limit")) {
         q->announceposition = ANNOUNCEPOSITION_LIMIT;
      } else if (!strcasecmp(val, "more")) {
         q->announceposition = ANNOUNCEPOSITION_MORE_THAN;
      } else if (ast_true(val)) {
         q->announceposition = ANNOUNCEPOSITION_YES;
      } else {
         q->announceposition = ANNOUNCEPOSITION_NO;
      }
   } else if (!strcasecmp(param, "announce-position-limit")) {
      q->announcepositionlimit = atoi(val);
   } else if (!strcasecmp(param, "periodic-announce")) {
      if (strchr(val, ',')) {
         char *s, *buf = ast_strdupa(val);
         unsigned int i = 0;

         while ((s = strsep(&buf, ",|"))) {
            if (!q->sound_periodicannounce[i]) {
               q->sound_periodicannounce[i] = ast_str_create(16);
            }
            ast_str_set(&q->sound_periodicannounce[i], 0, "%s", s);
            i++;
            if (i == MAX_PERIODIC_ANNOUNCEMENTS) {
               break;
            }
         }
         q->numperiodicannounce = i;
      } else {
         ast_str_set(&q->sound_periodicannounce[0], 0, "%s", val);
         q->numperiodicannounce = 1;
      }
   } else if (!strcasecmp(param, "periodic-announce-frequency")) {
      q->periodicannouncefrequency = atoi(val);
   } else if (!strcasecmp(param, "relative-periodic-announce")) {
      q->relativeperiodicannounce = ast_true(val);
   } else if (!strcasecmp(param, "random-periodic-announce")) {
      q->randomperiodicannounce = ast_true(val);
   } else if (!strcasecmp(param, "retry")) {
      q->retry = atoi(val);
      if (q->retry <= 0) {
         q->retry = DEFAULT_RETRY;
      }
   } else if (!strcasecmp(param, "wrapuptime")) {
      q->wrapuptime = atoi(val);
   } else if (!strcasecmp(param, "penaltymemberslimit")) {
      if ((sscanf(val, "%10d", &q->penaltymemberslimit) != 1)) {
         q->penaltymemberslimit = 0;
      }
   } else if (!strcasecmp(param, "autofill")) {
      q->autofill = ast_true(val);
   } else if (!strcasecmp(param, "monitor-type")) {
      if (!strcasecmp(val, "mixmonitor")) {
         q->montype = 1;
      }
   } else if (!strcasecmp(param, "autopause")) {
      q->autopause = autopause2int(val);
   } else if (!strcasecmp(param, "autopausedelay")) {
      q->autopausedelay = atoi(val);
   } else if (!strcasecmp(param, "autopausebusy")) {
      q->autopausebusy = ast_true(val);
   } else if (!strcasecmp(param, "autopauseunavail")) {
      q->autopauseunavail = ast_true(val);
   } else if (!strcasecmp(param, "maxlen")) {
      q->maxlen = atoi(val);
      if (q->maxlen < 0) {
         q->maxlen = 0;
      }
   } else if (!strcasecmp(param, "servicelevel")) {
      q->servicelevel= atoi(val);
   } else if (!strcasecmp(param, "strategy")) {
      int strategy;

      /* We are a static queue and already have set this, no need to do it again */
      if (failunknown) {
         return;
      }
      strategy = strat2int(val);
      if (strategy < 0) {
         ast_log(LOG_WARNING, "'%s' isn't a valid strategy for queue '%s', using ringall instead\n",
            val, q->name);
         q->strategy = QUEUE_STRATEGY_RINGALL;
      }
      if (strategy == q->strategy) {
         return;
      }
      if (strategy == QUEUE_STRATEGY_LINEAR) {
         ast_log(LOG_WARNING, "Changing to the linear strategy currently requires asterisk to be restarted.\n");
         return;
      }
      q->strategy = strategy;
   } else if (!strcasecmp(param, "joinempty")) {
      parse_empty_options(val, &q->joinempty, 1);
   } else if (!strcasecmp(param, "leavewhenempty")) {
      parse_empty_options(val, &q->leavewhenempty, 0);
   } else if (!strcasecmp(param, "eventmemberstatus")) {
      q->maskmemberstatus = !ast_true(val);
   } else if (!strcasecmp(param, "eventwhencalled")) {
      if (!strcasecmp(val, "vars")) {
         q->eventwhencalled = QUEUE_EVENT_VARIABLES;
      } else {
         q->eventwhencalled = ast_true(val) ? 1 : 0;
      }
   } else if (!strcasecmp(param, "reportholdtime")) {
      q->reportholdtime = ast_true(val);
   } else if (!strcasecmp(param, "memberdelay")) {
      q->memberdelay = atoi(val);
   } else if (!strcasecmp(param, "weight")) {
      q->weight = atoi(val);
   } else if (!strcasecmp(param, "timeoutrestart")) {
      q->timeoutrestart = ast_true(val);
   } else if (!strcasecmp(param, "defaultrule")) {
      ast_string_field_set(q, defaultrule, val);
   } else if (!strcasecmp(param, "timeoutpriority")) {
      if (!strcasecmp(val, "conf")) {
         q->timeoutpriority = TIMEOUT_PRIORITY_CONF;
      } else {
         q->timeoutpriority = TIMEOUT_PRIORITY_APP;
      }
   } else if (failunknown) {
      if (linenum >= 0) {
         ast_log(LOG_WARNING, "Unknown keyword in queue '%s': %s at line %d of queues.conf\n",
            q->name, param, linenum);
      } else {
         ast_log(LOG_WARNING, "Unknown keyword in queue '%s': %s\n", q->name, param);
      }
   }
}

/*!
 * \brief Find rt member record to update otherwise create one.
 *
 * Search for member in queue, if found update penalty/paused state,
 * if no member exists create one flag it as a RT member and add to queue member list.
*/
static void rt_handle_member_record(struct call_queue *q, char *interface, struct ast_config *member_config)
{
   struct member *m;
   struct ao2_iterator mem_iter;
   int penalty = 0;
   int paused  = 0;
   int found = 0;
   int ringinuse = q->ringinuse;

   const char *config_val;
   const char *rt_uniqueid = ast_variable_retrieve(member_config, interface, "uniqueid");
   const char *membername = S_OR(ast_variable_retrieve(member_config, interface, "membername"), interface);
   const char *state_interface = S_OR(ast_variable_retrieve(member_config, interface, "state_interface"), interface);
   const char *penalty_str = ast_variable_retrieve(member_config, interface, "penalty");
   const char *paused_str = ast_variable_retrieve(member_config, interface, "paused");

   if (ast_strlen_zero(rt_uniqueid)) {
      ast_log(LOG_WARNING, "Realtime field uniqueid is empty for member %s\n", S_OR(membername, "NULL"));
      return;
   }

   if (penalty_str) {
      penalty = atoi(penalty_str);
      if ((penalty < 0) && negative_penalty_invalid) {
         return;
      } else if (penalty < 0) {
         penalty = 0;
      }
   }

   if (paused_str) {
      paused = atoi(paused_str);
      if (paused < 0) {
         paused = 0;
      }
   }

   if ((config_val = ast_variable_retrieve(member_config, interface, realtime_ringinuse_field))) {
      if (ast_true(config_val)) {
         ringinuse = 1;
      } else if (ast_false(config_val)) {
         ringinuse = 0;
      } else {
         ast_log(LOG_WARNING, "Invalid value of '%s' field for %s in queue '%s'\n", realtime_ringinuse_field, interface, q->name);
      }
   }

   /* Find member by realtime uniqueid and update */
   mem_iter = ao2_iterator_init(q->members, 0);
   while ((m = ao2_iterator_next(&mem_iter))) {
      if (!strcasecmp(m->rt_uniqueid, rt_uniqueid)) {
         m->dead = 0;   /* Do not delete this one. */
         ast_copy_string(m->rt_uniqueid, rt_uniqueid, sizeof(m->rt_uniqueid));
         if (paused_str) {
            m->paused = paused;
         }
         if (strcasecmp(state_interface, m->state_interface)) {
            ast_copy_string(m->state_interface, state_interface, sizeof(m->state_interface));
         }
         m->penalty = penalty;
         m->ringinuse = ringinuse;
         found = 1;
         ao2_ref(m, -1);
         break;
      }
      ao2_ref(m, -1);
   }
   ao2_iterator_destroy(&mem_iter);

   /* Create a new member */
   if (!found) {
      if ((m = create_queue_member(interface, membername, penalty, paused, state_interface, ringinuse))) {
         m->dead = 0;
         m->realtime = 1;
         ast_copy_string(m->rt_uniqueid, rt_uniqueid, sizeof(m->rt_uniqueid));
         if (!log_membername_as_agent) {
            ast_queue_log(q->name, "REALTIME", m->interface, "ADDMEMBER", "%s", paused ? "PAUSED" : "");
         } else {
            ast_queue_log(q->name, "REALTIME", m->membername, "ADDMEMBER", "%s", paused ? "PAUSED" : "");
         }
         ao2_link(q->members, m);
         ao2_ref(m, -1);
         m = NULL;
      }
   }
}

/*! \brief Iterate through queue's member list and delete them */
static void free_members(struct call_queue *q, int all)
{
   /* Free non-dynamic members */
   struct member *cur;
   struct ao2_iterator mem_iter = ao2_iterator_init(q->members, 0);

   while ((cur = ao2_iterator_next(&mem_iter))) {
      if (all || !cur->dynamic) {
         ao2_unlink(q->members, cur);
      }
      ao2_ref(cur, -1);
   }
   ao2_iterator_destroy(&mem_iter);
}

/*! \brief Free queue's member list then its string fields */
static void destroy_queue(void *obj)
{
   struct call_queue *q = obj;
   int i;

   free_members(q, 1);
   ast_string_field_free_memory(q);
   for (i = 0; i < MAX_PERIODIC_ANNOUNCEMENTS; i++) {
      if (q->sound_periodicannounce[i]) {
         free(q->sound_periodicannounce[i]);
      }
   }
   ao2_ref(q->members, -1);
}

static struct call_queue *alloc_queue(const char *queuename)
{
   struct call_queue *q;

   if ((q = ao2_t_alloc(sizeof(*q), destroy_queue, "Allocate queue"))) {
      if (ast_string_field_init(q, 64)) {
         queue_t_unref(q, "String field allocation failed");
         return NULL;
      }
      ast_string_field_set(q, name, queuename);
   }
   return q;
}

/*!
 * \brief Reload a single queue via realtime.
 *
 * Check for statically defined queue first, check if deleted RT queue,
 * check for new RT queue, if queue vars are not defined init them with defaults.
 * reload RT queue vars, set RT queue members dead and reload them, return finished queue.
 * \retval the queue,
 * \retval NULL if it doesn't exist.
 * \note Should be called with the "queues" container locked.
*/
static struct call_queue *find_queue_by_name_rt(const char *queuename, struct ast_variable *queue_vars, struct ast_config *member_config)
{
   struct ast_variable *v;
   struct call_queue *q, tmpq = {
      .name = queuename,
   };
   struct member *m;
   struct ao2_iterator mem_iter;
   char *interface = NULL;
   const char *tmp_name;
   char *tmp;
   char tmpbuf[64];  /* Must be longer than the longest queue param name. */

   /* Static queues override realtime. */
   if ((q = ao2_t_find(queues, &tmpq, OBJ_POINTER, "Check if static queue exists"))) {
      ao2_lock(q);
      if (!q->realtime) {
         if (q->dead) {
            ao2_unlock(q);
            queue_t_unref(q, "Queue is dead; can't return it");
            return NULL;
         } 
         ast_log(LOG_WARNING, "Static queue '%s' already exists. Not loading from realtime\n", q->name);
         ao2_unlock(q);
         return q;
      }
   } else if (!member_config) {
      /* Not found in the list, and it's not realtime ... */
      return NULL;
   }
   /* Check if queue is defined in realtime. */
   if (!queue_vars) {
      /* Delete queue from in-core list if it has been deleted in realtime. */
      if (q) {
         /*! \note Hmm, can't seem to distinguish a DB failure from a not
            found condition... So we might delete an in-core queue
            in case of DB failure. */
         ast_debug(1, "Queue %s not found in realtime.\n", queuename);

         q->dead = 1;
         /* Delete if unused (else will be deleted when last caller leaves). */
         queues_t_unlink(queues, q, "Unused; removing from container");
         ao2_unlock(q);
         queue_t_unref(q, "Queue is dead; can't return it");
      }
      return NULL;
   }

   /* Create a new queue if an in-core entry does not exist yet. */
   if (!q) {
      struct ast_variable *tmpvar = NULL;
      if (!(q = alloc_queue(queuename))) {
         return NULL;
      }
      ao2_lock(q);
      clear_queue(q);
      q->realtime = 1;
      /*Before we initialize the queue, we need to set the strategy, so that linear strategy
       * will allocate the members properly
       */
      for (tmpvar = queue_vars; tmpvar; tmpvar = tmpvar->next) {
         if (!strcasecmp(tmpvar->name, "strategy")) {
            q->strategy = strat2int(tmpvar->value);
            if (q->strategy < 0) {
               ast_log(LOG_WARNING, "'%s' isn't a valid strategy for queue '%s', using ringall instead\n",
               tmpvar->value, q->name);
               q->strategy = QUEUE_STRATEGY_RINGALL;
            }
            break;
         }
      }
      /* We traversed all variables and didn't find a strategy */
      if (!tmpvar) {
         q->strategy = QUEUE_STRATEGY_RINGALL;
      }
      queues_t_link(queues, q, "Add queue to container");
   }
   init_queue(q);    /* Ensure defaults for all parameters not set explicitly. */

   memset(tmpbuf, 0, sizeof(tmpbuf));
   for (v = queue_vars; v; v = v->next) {
      /* Convert to dashes `-' from underscores `_' as the latter are more SQL friendly. */
      if (strchr(v->name, '_')) {
         ast_copy_string(tmpbuf, v->name, sizeof(tmpbuf));
         tmp_name = tmpbuf;
         tmp = tmpbuf;
         while ((tmp = strchr(tmp, '_'))) {
            *tmp++ = '-';
         }
      } else {
         tmp_name = v->name;
      }

      /* NULL values don't get returned from realtime; blank values should
       * still get set.  If someone doesn't want a value to be set, they
       * should set the realtime column to NULL, not blank. */
      queue_set_param(q, tmp_name, v->value, -1, 0);
   }

   /* Temporarily set realtime members dead so we can detect deleted ones. */
   mem_iter = ao2_iterator_init(q->members, 0);
   while ((m = ao2_iterator_next(&mem_iter))) {
      if (m->realtime) {
         m->dead = 1;
      }
      ao2_ref(m, -1);
   }
   ao2_iterator_destroy(&mem_iter);

   while ((interface = ast_category_browse(member_config, interface))) {
      rt_handle_member_record(q, interface, member_config);
   }

   /* Delete all realtime members that have been deleted in DB. */
   mem_iter = ao2_iterator_init(q->members, 0);
   while ((m = ao2_iterator_next(&mem_iter))) {
      if (m->dead) {
         if (ast_strlen_zero(m->membername) || !log_membername_as_agent) {
            ast_queue_log(q->name, "REALTIME", m->interface, "REMOVEMEMBER", "%s", "");
         } else {
            ast_queue_log(q->name, "REALTIME", m->membername, "REMOVEMEMBER", "%s", "");
         }
         ao2_unlink(q->members, m);
      }
      ao2_ref(m, -1);
   }
   ao2_iterator_destroy(&mem_iter);

   ao2_unlock(q);

   return q;
}

/*!
 * note  */

/*!
 * \internal
 * \brief Returns reference to the named queue. If the queue is realtime, it will load the queue as well.
 * \param queuename - name of the desired queue
 *
 * \retval the queue
 * \retval NULL if it doesn't exist
 */
static struct call_queue *find_load_queue_rt_friendly(const char *queuename)
{
   struct ast_variable *queue_vars;
   struct ast_config *member_config = NULL;
   struct call_queue *q = NULL, tmpq = {
      .name = queuename,
   };
   int prev_weight = 0;

   /* Find the queue in the in-core list first. */
   q = ao2_t_find(queues, &tmpq, OBJ_POINTER, "Look for queue in memory first");

   if (!q || q->realtime) {
      /*! \note Load from realtime before taking the "queues" container lock, to avoid blocking all
         queue operations while waiting for the DB.

         This will be two separate database transactions, so we might
         see queue parameters as they were before another process
         changed the queue and member list as it was after the change.
         Thus we might see an empty member list when a queue is
         deleted. In practise, this is unlikely to cause a problem. */

      queue_vars = ast_load_realtime("queues", "name", queuename, SENTINEL);
      if (queue_vars) {
         member_config = ast_load_realtime_multientry("queue_members", "interface LIKE", "%", "queue_name", queuename, SENTINEL);
         if (!member_config) {
            ast_debug(1, "No queue_members defined in config extconfig.conf\n");
            member_config = ast_config_new();
         }
      }
      if (q) {
         prev_weight = q->weight ? 1 : 0;
         queue_t_unref(q, "Need to find realtime queue");
      }

      q = find_queue_by_name_rt(queuename, queue_vars, member_config);
      ast_config_destroy(member_config);
      ast_variables_destroy(queue_vars);

      /* update the use_weight value if the queue's has gained or lost a weight */
      if (q) {
         if (!q->weight && prev_weight) {
            ast_atomic_fetchadd_int(&use_weight, -1);
         }
         if (q->weight && !prev_weight) {
            ast_atomic_fetchadd_int(&use_weight, +1);
         }
      }
      /* Other cases will end up with the proper value for use_weight */
   } else {
      update_realtime_members(q);
   }
   return q;
}

static int update_realtime_member_field(struct member *mem, const char *queue_name, const char *field, const char *value)
{
   int ret = -1;

   if (ast_strlen_zero(mem->rt_uniqueid)) {
      return ret;
   }

   if ((ast_update_realtime("queue_members", "uniqueid", mem->rt_uniqueid, field, value, SENTINEL)) > 0) {
      ret = 0;
   }

   return ret;
}


static void update_realtime_members(struct call_queue *q)
{
   struct ast_config *member_config = NULL;
   struct member *m;
   char *interface = NULL;
   struct ao2_iterator mem_iter;

   if (!(member_config = ast_load_realtime_multientry("queue_members", "interface LIKE", "%", "queue_name", q->name , SENTINEL))) {
      /* This queue doesn't have realtime members. If the queue still has any realtime
       * members in memory, they need to be removed.
       */
      ao2_lock(q);
      mem_iter = ao2_iterator_init(q->members, 0);
      while ((m = ao2_iterator_next(&mem_iter))) {
         if (m->realtime) {
            ao2_unlink(q->members, m);
         }
         ao2_ref(m, -1);
      }
      ast_debug(3, "Queue %s has no realtime members defined. No need for update\n", q->name);
      ao2_unlock(q);
      return;
   }

   ao2_lock(q);

   /* Temporarily set realtime  members dead so we can detect deleted ones.*/
   mem_iter = ao2_iterator_init(q->members, 0);
   while ((m = ao2_iterator_next(&mem_iter))) {
      if (m->realtime) {
         m->dead = 1;
      }
      ao2_ref(m, -1);
   }
   ao2_iterator_destroy(&mem_iter);

   while ((interface = ast_category_browse(member_config, interface))) {
      rt_handle_member_record(q, interface, member_config);
   }

   /* Delete all realtime members that have been deleted in DB. */
   mem_iter = ao2_iterator_init(q->members, 0);
   while ((m = ao2_iterator_next(&mem_iter))) {
      if (m->dead) {
         if (ast_strlen_zero(m->membername) || !log_membername_as_agent) {
            ast_queue_log(q->name, "REALTIME", m->interface, "REMOVEMEMBER", "%s", "");
         } else {
            ast_queue_log(q->name, "REALTIME", m->membername, "REMOVEMEMBER", "%s", "");
         }
         ao2_unlink(q->members, m);
      }
      ao2_ref(m, -1);
   }
   ao2_iterator_destroy(&mem_iter);
   ao2_unlock(q);
   ast_config_destroy(member_config);
}

static int join_queue(char *queuename, struct queue_ent *qe, enum queue_result *reason, int position)
{
   struct call_queue *q;
   struct queue_ent *cur, *prev = NULL;
   int res = -1;
   int pos = 0;
   int inserted = 0;

   if (!(q = find_load_queue_rt_friendly(queuename))) {
      return res;
   }
   ao2_lock(q);

   /* This is our one */
   if (q->joinempty) {
      int status = 0;
      if ((status = get_member_status(q, qe->max_penalty, qe->min_penalty, q->joinempty))) {
         *reason = QUEUE_JOINEMPTY;
         ao2_unlock(q);
         queue_t_unref(q, "Done with realtime queue");
         return res;
      }
   }
   if (*reason == QUEUE_UNKNOWN && q->maxlen && (q->count >= q->maxlen)) {
      *reason = QUEUE_FULL;
   } else if (*reason == QUEUE_UNKNOWN) {
      /* There's space for us, put us at the right position inside
       * the queue.
       * Take into account the priority of the calling user */
      inserted = 0;
      prev = NULL;
      cur = q->head;
      while (cur) {
         /* We have higher priority than the current user, enter
          * before him, after all the other users with priority
          * higher or equal to our priority. */
         if ((!inserted) && (qe->prio > cur->prio)) {
            insert_entry(q, prev, qe, &pos);
            inserted = 1;
         }
         /* <= is necessary for the position comparison because it may not be possible to enter
          * at our desired position since higher-priority callers may have taken the position we want
          */
         if (!inserted && (qe->prio >= cur->prio) && position && (position <= pos + 1)) {
            insert_entry(q, prev, qe, &pos);
            inserted = 1;
            /*pos is incremented inside insert_entry, so don't need to add 1 here*/
            if (position < pos) {
               ast_log(LOG_NOTICE, "Asked to be inserted at position %d but forced into position %d due to higher priority callers\n", position, pos);
            }
         }
         cur->pos = ++pos;
         prev = cur;
         cur = cur->next;
      }
      /* No luck, join at the end of the queue */
      if (!inserted) {
         insert_entry(q, prev, qe, &pos);
      }
      ast_copy_string(qe->moh, q->moh, sizeof(qe->moh));
      ast_copy_string(qe->announce, q->announce, sizeof(qe->announce));
      ast_copy_string(qe->context, q->context, sizeof(qe->context));
      q->count++;
      if (q->count == 1) {
         ast_devstate_changed(AST_DEVICE_RINGING, "Queue:%s", q->name);
      }

      res = 0;
      /*** DOCUMENTATION
      <managerEventInstance>
         <synopsis>Raised when a channel joins a Queue.</synopsis>
         <syntax>
            <xi:include xpointer="xpointer(/docs/managerEvent[@name='QueueMemberStatus']/managerEventInstance/syntax/parameter[@name='Queue'])" />
            <parameter name="Position">
               <para>This channel's current position in the queue.</para>
            </parameter>
            <parameter name="Count">
               <para>The total number of channels in the queue.</para>
            </parameter>
         </syntax>
         <see-also>
            <ref type="managerEvent">Leave</ref>
            <ref type="application">Queue</ref>
         </see-also>
      </managerEventInstance>
      ***/
      ast_manager_event(qe->chan, EVENT_FLAG_CALL, "Join",
         "Channel: %s\r\n"
         "CallerIDNum: %s\r\n"
         "CallerIDName: %s\r\n"
         "ConnectedLineNum: %s\r\n"
         "ConnectedLineName: %s\r\n"
         "Queue: %s\r\n"
         "Position: %d\r\n"
         "Count: %d\r\n"
         "Uniqueid: %s\r\n",
         ast_channel_name(qe->chan),
         S_COR(ast_channel_caller(qe->chan)->id.number.valid, ast_channel_caller(qe->chan)->id.number.str, "unknown"),/* XXX somewhere else it is <unknown> */
         S_COR(ast_channel_caller(qe->chan)->id.name.valid, ast_channel_caller(qe->chan)->id.name.str, "unknown"),
         S_COR(ast_channel_connected(qe->chan)->id.number.valid, ast_channel_connected(qe->chan)->id.number.str, "unknown"),/* XXX somewhere else it is <unknown> */
         S_COR(ast_channel_connected(qe->chan)->id.name.valid, ast_channel_connected(qe->chan)->id.name.str, "unknown"),
         q->name, qe->pos, q->count, ast_channel_uniqueid(qe->chan));
      ast_debug(1, "Queue '%s' Join, Channel '%s', Position '%d'\n", q->name, ast_channel_name(qe->chan), qe->pos );
   }
   ao2_unlock(q);
   queue_t_unref(q, "Done with realtime queue");

   return res;
}

static int play_file(struct ast_channel *chan, const char *filename)
{
   int res;

   if (ast_strlen_zero(filename)) {
      return 0;
   }

   if (!ast_fileexists(filename, NULL, ast_channel_language(chan))) {
      return 0;
   }

   ast_stopstream(chan);

   res = ast_streamfile(chan, filename, ast_channel_language(chan));
   if (!res) {
      res = ast_waitstream(chan, AST_DIGIT_ANY);
   }

   ast_stopstream(chan);

   return res;
}

/*!
 * \brief Check for valid exit from queue via goto
 * \retval 0 if failure
 * \retval 1 if successful
*/
static int valid_exit(struct queue_ent *qe, char digit)
{
   int digitlen = strlen(qe->digits);

   /* Prevent possible buffer overflow */
   if (digitlen < sizeof(qe->digits) - 2) {
      qe->digits[digitlen] = digit;
      qe->digits[digitlen + 1] = '\0';
   } else {
      qe->digits[0] = '\0';
      return 0;
   }

   /* If there's no context to goto, short-circuit */
   if (ast_strlen_zero(qe->context)) {
      return 0;
   }

   /* If the extension is bad, then reset the digits to blank */
   if (!ast_canmatch_extension(qe->chan, qe->context, qe->digits, 1,
      S_COR(ast_channel_caller(qe->chan)->id.number.valid, ast_channel_caller(qe->chan)->id.number.str, NULL))) {
      qe->digits[0] = '\0';
      return 0;
   }

   /* We have an exact match */
   if (!ast_goto_if_exists(qe->chan, qe->context, qe->digits, 1)) {
      qe->valid_digits = 1;
      /* Return 1 on a successful goto */
      return 1;
   }

   return 0;
}

static int say_position(struct queue_ent *qe, int ringing)
{
   int res = 0, avgholdmins, avgholdsecs, announceposition = 0;
   int say_thanks = 1;
   time_t now;

   /* Let minannouncefrequency seconds pass between the start of each position announcement */
   time(&now);
   if ((now - qe->last_pos) < qe->parent->minannouncefrequency) {
      return 0;
   }

   /* If either our position has changed, or we are over the freq timer, say position */
   if ((qe->last_pos_said == qe->pos) && ((now - qe->last_pos) < qe->parent->announcefrequency)) {
      return 0;
   }

   if (ringing) {
      ast_indicate(qe->chan,-1);
   } else {
      ast_moh_stop(qe->chan);
   }

   if (qe->parent->announceposition == ANNOUNCEPOSITION_YES ||
      qe->parent->announceposition == ANNOUNCEPOSITION_MORE_THAN ||
      (qe->parent->announceposition == ANNOUNCEPOSITION_LIMIT &&
      qe->pos <= qe->parent->announcepositionlimit)) {
         announceposition = 1;
   }


   if (announceposition == 1) {
      /* Say we're next, if we are */
      if (qe->pos == 1) {
         res = play_file(qe->chan, qe->parent->sound_next);
         if (res) {
            goto playout;
         }
         goto posout;
      } else {
         if (qe->parent->announceposition == ANNOUNCEPOSITION_MORE_THAN && qe->pos > qe->parent->announcepositionlimit){
            /* More than Case*/
            res = play_file(qe->chan, qe->parent->queue_quantity1);
            if (res) {
               goto playout;
            }
            res = ast_say_number(qe->chan, qe->parent->announcepositionlimit, AST_DIGIT_ANY, ast_channel_language(qe->chan), NULL); /* Needs gender */
            if (res) {
               goto playout;
            }
         } else {
            /* Normal Case */
            res = play_file(qe->chan, qe->parent->sound_thereare);
            if (res) {
               goto playout;
            }
            res = ast_say_number(qe->chan, qe->pos, AST_DIGIT_ANY, ast_channel_language(qe->chan), NULL); /* Needs gender */
            if (res) {
               goto playout;
            }
         }
         if (qe->parent->announceposition == ANNOUNCEPOSITION_MORE_THAN && qe->pos > qe->parent->announcepositionlimit){
            /* More than Case*/
            res = play_file(qe->chan, qe->parent->queue_quantity2);
            if (res) {
               goto playout;
            }
         } else {
            res = play_file(qe->chan, qe->parent->sound_calls);
            if (res) {
               goto playout;
            }
         }
      }
   }
   /* Round hold time to nearest minute */
   avgholdmins = abs(((qe->parent->holdtime + 30) - (now - qe->start)) / 60);

   /* If they have specified a rounding then round the seconds as well */
   if (qe->parent->roundingseconds) {
      avgholdsecs = (abs(((qe->parent->holdtime + 30) - (now - qe->start))) - 60 * avgholdmins) / qe->parent->roundingseconds;
      avgholdsecs *= qe->parent->roundingseconds;
   } else {
      avgholdsecs = 0;
   }

   ast_verb(3, "Hold time for %s is %d minute(s) %d seconds\n", qe->parent->name, avgholdmins, avgholdsecs);

   /* If the hold time is >1 min, if it's enabled, and if it's not
      supposed to be only once and we have already said it, say it */
    if ((avgholdmins+avgholdsecs) > 0 && qe->parent->announceholdtime &&
        ((qe->parent->announceholdtime == ANNOUNCEHOLDTIME_ONCE && !qe->last_pos) ||
        !(qe->parent->announceholdtime == ANNOUNCEHOLDTIME_ONCE))) {
      res = play_file(qe->chan, qe->parent->sound_holdtime);
      if (res) {
         goto playout;
      }

      if (avgholdmins >= 1) {
         res = ast_say_number(qe->chan, avgholdmins, AST_DIGIT_ANY, ast_channel_language(qe->chan), NULL);
         if (res) {
            goto playout;
         }

         if (avgholdmins == 1) {
            res = play_file(qe->chan, qe->parent->sound_minute);
            if (res) {
               goto playout;
            }
         } else {
            res = play_file(qe->chan, qe->parent->sound_minutes);
            if (res) {
               goto playout;
            }
         }
      }
      if (avgholdsecs >= 1) {
         res = ast_say_number(qe->chan, avgholdsecs, AST_DIGIT_ANY, ast_channel_language(qe->chan), NULL);
         if (res) {
            goto playout;
         }

         res = play_file(qe->chan, qe->parent->sound_seconds);
         if (res) {
            goto playout;
         }
      }
   } else if (qe->parent->announceholdtime && !qe->parent->announceposition) {
      say_thanks = 0;
   }

posout:
   if (qe->parent->announceposition) {
      ast_verb(3, "Told %s in %s their queue position (which was %d)\n",
         ast_channel_name(qe->chan), qe->parent->name, qe->pos);
   }
   if (say_thanks) {
      res = play_file(qe->chan, qe->parent->sound_thanks);
   }
playout:

   if ((res > 0 && !valid_exit(qe, res))) {
      res = 0;
   }

   /* Set our last_pos indicators */
   qe->last_pos = now;
   qe->last_pos_said = qe->pos;

   /* Don't restart music on hold if we're about to exit the caller from the queue */
   if (!res) {
      if (ringing) {
         ast_indicate(qe->chan, AST_CONTROL_RINGING);
      } else {
         ast_moh_start(qe->chan, qe->moh, NULL);
      }
   }
   return res;
}

static void recalc_holdtime(struct queue_ent *qe, int newholdtime)
{
   int oldvalue;

   /* Calculate holdtime using an exponential average */
   /* Thanks to SRT for this contribution */
   /* 2^2 (4) is the filter coefficient; a higher exponent would give old entries more weight */

   ao2_lock(qe->parent);
   oldvalue = qe->parent->holdtime;
   qe->parent->holdtime = (((oldvalue << 2) - oldvalue) + newholdtime) >> 2;
   ao2_unlock(qe->parent);
}

/*! \brief Caller leaving queue.
 * 
 * Search the queue to find the leaving client, if found remove from queue
 * create manager event, move others up the queue.
*/
static void leave_queue(struct queue_ent *qe)
{
   struct call_queue *q;
   struct queue_ent *current, *prev = NULL;
   struct penalty_rule *pr_iter;
   int pos = 0;

   if (!(q = qe->parent)) {
      return;
   }
   queue_t_ref(q, "Copy queue pointer from queue entry");
   ao2_lock(q);

   prev = NULL;
   for (current = q->head; current; current = current->next) {
      if (current == qe) {
         char posstr[20];
         q->count--;
         if (!q->count) {
            ast_devstate_changed(AST_DEVICE_NOT_INUSE, "Queue:%s", q->name);
         }

         /* Take us out of the queue */
         /*** DOCUMENTATION
         <managerEventInstance>
            <synopsis>Raised when a channel leaves a Queue.</synopsis>
            <syntax>
               <xi:include xpointer="xpointer(/docs/managerEvent[@name='QueueMemberStatus']/managerEventInstance/syntax/parameter[@name='Queue'])" />
               <xi:include xpointer="xpointer(/docs/managerEvent[@name='Join']/managerEventInstance/syntax/parameter[@name='Count'])" />
               <xi:include xpointer="xpointer(/docs/managerEvent[@name='Join']/managerEventInstance/syntax/parameter[@name='Position'])" />
            </syntax>
            <see-also>
               <ref type="managerEvent">Join</ref>
            </see-also>
         </managerEventInstance>
         ***/
         ast_manager_event(qe->chan, EVENT_FLAG_CALL, "Leave",
            "Channel: %s\r\nQueue: %s\r\nCount: %d\r\nPosition: %d\r\nUniqueid: %s\r\n",
            ast_channel_name(qe->chan), q->name,  q->count, qe->pos, ast_channel_uniqueid(qe->chan));
         ast_debug(1, "Queue '%s' Leave, Channel '%s'\n", q->name, ast_channel_name(qe->chan));
         /* Take us out of the queue */
         if (prev) {
            prev->next = current->next;
         } else {
            q->head = current->next;
         }
         /* Free penalty rules */
         while ((pr_iter = AST_LIST_REMOVE_HEAD(&qe->qe_rules, list))) {
            ast_free(pr_iter);
         }
         snprintf(posstr, sizeof(posstr), "%d", qe->pos);
         pbx_builtin_setvar_helper(qe->chan, "QUEUEPOSITION", posstr);
      } else {
         /* Renumber the people after us in the queue based on a new count */
         current->pos = ++pos;
         prev = current;
      }
   }
   ao2_unlock(q);

   /*If the queue is a realtime queue, check to see if it's still defined in real time*/
   if (q->realtime) {
      struct ast_variable *var;
      if (!(var = ast_load_realtime("queues", "name", q->name, SENTINEL))) {
         q->dead = 1;
      } else {
         ast_variables_destroy(var);
      }
   }

   if (q->dead) {
      /* It's dead and nobody is in it, so kill it */
      queues_t_unlink(queues, q, "Queue is now dead; remove it from the container");
   }
   /* unref the explicit ref earlier in the function */
   queue_t_unref(q, "Expire copied reference");
}

/*!
 * \internal
 * \brief Destroy the given callattempt structure and free it.
 * \since 1.8
 *
 * \param doomed callattempt structure to destroy.
 *
 * \return Nothing
 */
static void callattempt_free(struct callattempt *doomed)
{
   if (doomed->member) {
      ao2_ref(doomed->member, -1);
   }
   ast_party_connected_line_free(&doomed->connected);
   ast_free(doomed);
}

/*! \brief Hang up a list of outgoing calls */
static void hangupcalls(struct callattempt *outgoing, struct ast_channel *exception, int cancel_answered_elsewhere)
{
   struct callattempt *oo;

   while (outgoing) {
      /* If someone else answered the call we should indicate this in the CANCEL */
      /* Hangup any existing lines we have open */
      if (outgoing->chan && (outgoing->chan != exception)) {
         if (exception || cancel_answered_elsewhere) {
            ast_channel_hangupcause_set(outgoing->chan, AST_CAUSE_ANSWERED_ELSEWHERE);
         }
         ast_hangup(outgoing->chan);
      }
      oo = outgoing;
      outgoing = outgoing->q_next;
      ast_aoc_destroy_decoded(oo->aoc_s_rate_list);
      callattempt_free(oo);
   }
}

/*!
 * \brief Get the number of members available to accept a call.
 *
 * \note The queue passed in should be locked prior to this function call
 *
 * \param[in] q The queue for which we are couting the number of available members
 * \return Return the number of available members in queue q
 */
static int num_available_members(struct call_queue *q)
{
   struct member *mem;
   int avl = 0;
   struct ao2_iterator mem_iter;

   mem_iter = ao2_iterator_init(q->members, 0);
   while ((mem = ao2_iterator_next(&mem_iter))) {

      avl += is_member_available(mem);
      ao2_ref(mem, -1);

      /* If autofill is not enabled or if the queue's strategy is ringall, then
       * we really don't care about the number of available members so much as we
       * do that there is at least one available.
       *
       * In fact, we purposely will return from this function stating that only
       * one member is available if either of those conditions hold. That way,
       * functions which determine what action to take based on the number of available
       * members will operate properly. The reasoning is that even if multiple
       * members are available, only the head caller can actually be serviced.
       */
      if ((!q->autofill || q->strategy == QUEUE_STRATEGY_RINGALL) && avl) {
         break;
      }
   }
   ao2_iterator_destroy(&mem_iter);

   return avl;
}

/* traverse all defined queues which have calls waiting and contain this member
   return 0 if no other queue has precedence (higher weight) or 1 if found  */
static int compare_weight(struct call_queue *rq, struct member *member)
{
   struct call_queue *q;
   struct member *mem;
   int found = 0;
   struct ao2_iterator queue_iter;

   queue_iter = ao2_iterator_init(queues, 0);
   while ((q = ao2_t_iterator_next(&queue_iter, "Iterate through queues"))) {
      if (q == rq) { /* don't check myself, could deadlock */
         queue_t_unref(q, "Done with iterator");
         continue;
      }
      ao2_lock(q);
      if (q->count && q->members) {
         if ((mem = ao2_find(q->members, member, OBJ_POINTER))) {
            ast_debug(1, "Found matching member %s in queue '%s'\n", mem->interface, q->name);
            if (q->weight > rq->weight && q->count >= num_available_members(q)) {
               ast_debug(1, "Queue '%s' (weight %d, calls %d) is preferred over '%s' (weight %d, calls %d)\n", q->name, q->weight, q->count, rq->name, rq->weight, rq->count);
               found = 1;
            }
            ao2_ref(mem, -1);
         }
      }
      ao2_unlock(q);
      queue_t_unref(q, "Done with iterator");
      if (found) {
         break;
      }
   }
   ao2_iterator_destroy(&queue_iter);
   return found;
}

/*! \brief common hangup actions */
static void do_hang(struct callattempt *o)
{
   o->stillgoing = 0;
   ast_hangup(o->chan);
   o->chan = NULL;
}

/*! \brief convert "\n" to "\nVariable: " ready for manager to use */
static char *vars2manager(struct ast_channel *chan, char *vars, size_t len)
{
   struct ast_str *buf = ast_str_thread_get(&ast_str_thread_global_buf, len + 1);
   const char *tmp;

   if (pbx_builtin_serialize_variables(chan, &buf)) {
      int i, j;

      /* convert "\n" to "\nVariable: " */
      strcpy(vars, "Variable: ");
      tmp = ast_str_buffer(buf);

      for (i = 0, j = 10; (i < len - 1) && (j < len - 1); i++, j++) {
         vars[j] = tmp[i];

         if (tmp[i + 1] == '\0') {
            break;
         }
         if (tmp[i] == '\n') {
            vars[j++] = '\r';
            vars[j++] = '\n';

            ast_copy_string(&(vars[j]), "Variable: ", len - j);
            j += 9;
         }
      }
      if (j > len - 3) {
         j = len - 3;
      }
      vars[j++] = '\r';
      vars[j++] = '\n';
      vars[j] = '\0';
   } else {
      /* there are no channel variables; leave it blank */
      *vars = '\0';
   }
   return vars;
}

/*! 
 * \brief Part 2 of ring_one
 *
 * Does error checking before attempting to request a channel and call a member. 
 * This function is only called from ring_one(). 
 * Failure can occur if:
 * - Agent on call
 * - Agent is paused
 * - Wrapup time not expired
 * - Priority by another queue
 *
 * \retval 1 on success to reach a free agent
 * \retval 0 on failure to get agent.
 */
static int ring_entry(struct queue_ent *qe, struct callattempt *tmp, int *busies)
{
   int res;
   int status;
   char tech[256];
   char *location;
   const char *macrocontext, *macroexten;
   enum ast_device_state newstate;

   /* on entry here, we know that tmp->chan == NULL */
   if (tmp->member->paused) {
      ast_debug(1, "%s paused, can't receive call\n", tmp->interface);
      if (ast_channel_cdr(qe->chan)) {
         ast_cdr_busy(ast_channel_cdr(qe->chan));
      }
      tmp->stillgoing = 0;
      return 0;
   }

   if ((tmp->lastqueue && tmp->lastqueue->wrapuptime && (time(NULL) - tmp->lastcall < tmp->lastqueue->wrapuptime)) ||
      (!tmp->lastqueue && qe->parent->wrapuptime && (time(NULL) - tmp->lastcall < qe->parent->wrapuptime))) {
      ast_debug(1, "Wrapuptime not yet expired on queue %s for %s\n",
            (tmp->lastqueue ? tmp->lastqueue->name : qe->parent->name), tmp->interface);
      if (ast_channel_cdr(qe->chan)) {
         ast_cdr_busy(ast_channel_cdr(qe->chan));
      }
      tmp->stillgoing = 0;
      (*busies)++;
      return 0;
   }

   if (!tmp->member->ringinuse) {
      if (check_state_unknown && (tmp->member->status == AST_DEVICE_UNKNOWN)) {
         newstate = ast_device_state(tmp->member->interface);
         if (newstate != tmp->member->status) {
            ast_log(LOG_WARNING, "Found a channel matching iterface %s while status was %s changed to %s\n",
               tmp->member->interface, ast_devstate2str(tmp->member->status), ast_devstate2str(newstate));
            ast_devstate_changed_literal(newstate, tmp->member->interface);
         }
      }
      if ((tmp->member->status != AST_DEVICE_NOT_INUSE) && (tmp->member->status != AST_DEVICE_UNKNOWN)) {
         ast_debug(1, "%s in use, can't receive call\n", tmp->interface);
         if (ast_channel_cdr(qe->chan)) {
            ast_cdr_busy(ast_channel_cdr(qe->chan));
         }
         tmp->stillgoing = 0;
         return 0;
      }
   }

   if (use_weight && compare_weight(qe->parent,tmp->member)) {
      ast_debug(1, "Priority queue delaying call to %s:%s\n", qe->parent->name, tmp->interface);
      if (ast_channel_cdr(qe->chan)) {
         ast_cdr_busy(ast_channel_cdr(qe->chan));
      }
      tmp->stillgoing = 0;
      (*busies)++;
      return 0;
   }

   ast_copy_string(tech, tmp->interface, sizeof(tech));
   if ((location = strchr(tech, '/'))) {
      *location++ = '\0';
   } else {
      location = "";
   }

   /* Request the peer */
   tmp->chan = ast_request(tech, ast_channel_nativeformats(qe->chan), qe->chan, location, &status);
   if (!tmp->chan) {       /* If we can't, just go on to the next call */
      if (ast_channel_cdr(qe->chan)) {
         ast_cdr_busy(ast_channel_cdr(qe->chan));
      }
      tmp->stillgoing = 0;

      ao2_lock(qe->parent);
      update_status(qe->parent, tmp->member, get_queue_member_status(tmp->member));
      qe->parent->rrpos++;
      qe->linpos++;
      ao2_unlock(qe->parent);

      (*busies)++;
      return 0;
   }

   ast_channel_lock_both(tmp->chan, qe->chan);

   if (qe->cancel_answered_elsewhere) {
      ast_channel_hangupcause_set(tmp->chan, AST_CAUSE_ANSWERED_ELSEWHERE);
   }
   ast_channel_appl_set(tmp->chan, "AppQueue");
   ast_channel_data_set(tmp->chan, "(Outgoing Line)");
   memset(ast_channel_whentohangup(tmp->chan), 0, sizeof(*ast_channel_whentohangup(tmp->chan)));

   /* If the new channel has no callerid, try to guess what it should be */
   if (!ast_channel_caller(tmp->chan)->id.number.valid) {
      if (ast_channel_connected(qe->chan)->id.number.valid) {
         struct ast_party_caller caller;

         ast_party_caller_set_init(&caller, ast_channel_caller(tmp->chan));
         caller.id = ast_channel_connected(qe->chan)->id;
         caller.ani = ast_channel_connected(qe->chan)->ani;
         ast_channel_set_caller_event(tmp->chan, &caller, NULL);
      } else if (!ast_strlen_zero(ast_channel_dialed(qe->chan)->number.str)) {
         ast_set_callerid(tmp->chan, ast_channel_dialed(qe->chan)->number.str, NULL, NULL);
      } else if (!ast_strlen_zero(S_OR(ast_channel_macroexten(qe->chan), ast_channel_exten(qe->chan)))) {
         ast_set_callerid(tmp->chan, S_OR(ast_channel_macroexten(qe->chan), ast_channel_exten(qe->chan)), NULL, NULL); 
      }
      tmp->dial_callerid_absent = 1;
   }

   ast_party_redirecting_copy(ast_channel_redirecting(tmp->chan), ast_channel_redirecting(qe->chan));

   ast_channel_dialed(tmp->chan)->transit_network_select = ast_channel_dialed(qe->chan)->transit_network_select;

   ast_connected_line_copy_from_caller(ast_channel_connected(tmp->chan), ast_channel_caller(qe->chan));

   /* Inherit specially named variables from parent channel */
   ast_channel_inherit_variables(qe->chan, tmp->chan);
   ast_channel_datastore_inherit(qe->chan, tmp->chan);

   /* Presense of ADSI CPE on outgoing channel follows ours */
   ast_channel_adsicpe_set(tmp->chan, ast_channel_adsicpe(qe->chan));

   /* Inherit context and extension */
   macrocontext = pbx_builtin_getvar_helper(qe->chan, "MACRO_CONTEXT");
   ast_channel_dialcontext_set(tmp->chan, ast_strlen_zero(macrocontext) ? ast_channel_context(qe->chan) : macrocontext);
   macroexten = pbx_builtin_getvar_helper(qe->chan, "MACRO_EXTEN");
   if (!ast_strlen_zero(macroexten)) {
      ast_channel_exten_set(tmp->chan, macroexten);
   } else {
      ast_channel_exten_set(tmp->chan, ast_channel_exten(qe->chan));
   }
   if (ast_cdr_isset_unanswered()) {
      /* they want to see the unanswered dial attempts! */
      /* set up the CDR fields on all the CDRs to give sensical information */
      ast_cdr_setdestchan(ast_channel_cdr(tmp->chan), ast_channel_name(tmp->chan));
      strcpy(ast_channel_cdr(tmp->chan)->clid, ast_channel_cdr(qe->chan)->clid);
      strcpy(ast_channel_cdr(tmp->chan)->channel, ast_channel_cdr(qe->chan)->channel);
      strcpy(ast_channel_cdr(tmp->chan)->src, ast_channel_cdr(qe->chan)->src);
      strcpy(ast_channel_cdr(tmp->chan)->dst, ast_channel_exten(qe->chan));
      strcpy(ast_channel_cdr(tmp->chan)->dcontext, ast_channel_context(qe->chan));
      strcpy(ast_channel_cdr(tmp->chan)->lastapp, ast_channel_cdr(qe->chan)->lastapp);
      strcpy(ast_channel_cdr(tmp->chan)->lastdata, ast_channel_cdr(qe->chan)->lastdata);
      ast_channel_cdr(tmp->chan)->amaflags = ast_channel_cdr(qe->chan)->amaflags;
      strcpy(ast_channel_cdr(tmp->chan)->accountcode, ast_channel_cdr(qe->chan)->accountcode);
      strcpy(ast_channel_cdr(tmp->chan)->userfield, ast_channel_cdr(qe->chan)->userfield);
   }

   ast_channel_unlock(tmp->chan);
   ast_channel_unlock(qe->chan);

   ao2_lock(tmp->member);
   update_status(qe->parent, tmp->member, get_queue_member_status(tmp->member));
   if (!qe->parent->ringinuse && (tmp->member->status != AST_DEVICE_NOT_INUSE) && (tmp->member->status != AST_DEVICE_UNKNOWN)) {
      ast_verb(1, "Member %s is busy, cannot dial", tmp->member->interface);
      res = -1;
   }
   else {
      /* Place the call, but don't wait on the answer */
      res = ast_call(tmp->chan, location, 0);
   }
   ao2_unlock(tmp->member);
   if (res) {
      /* Again, keep going even if there's an error */
      ast_verb(3, "Couldn't call %s\n", tmp->interface);
      do_hang(tmp);
      (*busies)++;
      update_status(qe->parent, tmp->member, get_queue_member_status(tmp->member));
      return 0;
   } else if (qe->parent->eventwhencalled) {
      char vars[2048];

      ast_channel_lock_both(tmp->chan, qe->chan);

      /*** DOCUMENTATION
      <managerEventInstance>
         <synopsis>Raised when an Agent is notified of a member in the queue.</synopsis>
         <syntax>
            <xi:include xpointer="xpointer(/docs/managerEvent[@name='QueueMemberStatus']/managerEventInstance/syntax/parameter[@name='Queue'])" />
            <parameter name="AgentCalled">
               <para>The agent's technology or location.</para>
            </parameter>
            <parameter name="AgentName">
               <para>The name of the agent.</para>
            </parameter>
            <parameter name="Variable" required="no" multiple="yes">
               <para>Optional channel variables from the ChannelCalling channel</para>
            </parameter>
         </syntax>
         <see-also>
            <ref type="managerEvent">AgentRingNoAnswer</ref>
            <ref type="managerEvent">AgentComplete</ref>
            <ref type="managerEvent">AgentConnect</ref>
         </see-also>
      </managerEventInstance>
      ***/
      manager_event(EVENT_FLAG_AGENT, "AgentCalled",
         "Queue: %s\r\n"
         "AgentCalled: %s\r\n"
         "AgentName: %s\r\n"
         "ChannelCalling: %s\r\n"
         "DestinationChannel: %s\r\n"
         "CallerIDNum: %s\r\n"
         "CallerIDName: %s\r\n"
         "ConnectedLineNum: %s\r\n"
         "ConnectedLineName: %s\r\n"
         "Context: %s\r\n"
         "Extension: %s\r\n"
         "Priority: %d\r\n"
         "Uniqueid: %s\r\n"
         "%s",
         qe->parent->name, tmp->interface, tmp->member->membername, ast_channel_name(qe->chan), ast_channel_name(tmp->chan),
         S_COR(ast_channel_caller(qe->chan)->id.number.valid, ast_channel_caller(qe->chan)->id.number.str, "unknown"),
         S_COR(ast_channel_caller(qe->chan)->id.name.valid, ast_channel_caller(qe->chan)->id.name.str, "unknown"),
         S_COR(ast_channel_connected(qe->chan)->id.number.valid, ast_channel_connected(qe->chan)->id.number.str, "unknown"),
         S_COR(ast_channel_connected(qe->chan)->id.name.valid, ast_channel_connected(qe->chan)->id.name.str, "unknown"),
         ast_channel_context(qe->chan), ast_channel_exten(qe->chan), ast_channel_priority(qe->chan), ast_channel_uniqueid(qe->chan),
         qe->parent->eventwhencalled == QUEUE_EVENT_VARIABLES ? vars2manager(qe->chan, vars, sizeof(vars)) : "");

      ast_channel_unlock(tmp->chan);
      ast_channel_unlock(qe->chan);

      ast_verb(3, "Called %s\n", tmp->interface);
   }

   update_status(qe->parent, tmp->member, get_queue_member_status(tmp->member));
   return 1;
}

/*! \brief find the entry with the best metric, or NULL */
static struct callattempt *find_best(struct callattempt *outgoing)
{
   struct callattempt *best = NULL, *cur;

   for (cur = outgoing; cur; cur = cur->q_next) {
      if (cur->stillgoing &&              /* Not already done */
         !cur->chan &&              /* Isn't already going */
         (!best || cur->metric < best->metric)) {     /* We haven't found one yet, or it's better */
         best = cur;
      }
   }

   return best;
}

/*! 
 * \brief Place a call to a queue member.
 *
 * Once metrics have been calculated for each member, this function is used
 * to place a call to the appropriate member (or members). The low-level
 * channel-handling and error detection is handled in ring_entry
 *
 * \retval 1 if a member was called successfully
 * \retval 0 otherwise
 */
static int ring_one(struct queue_ent *qe, struct callattempt *outgoing, int *busies)
{
   int ret = 0;

   while (ret == 0) {
      struct callattempt *best = find_best(outgoing);
      if (!best) {
         ast_debug(1, "Nobody left to try ringing in queue\n");
         break;
      }
      if (qe->parent->strategy == QUEUE_STRATEGY_RINGALL) {
         struct callattempt *cur;
         /* Ring everyone who shares this best metric (for ringall) */
         for (cur = outgoing; cur; cur = cur->q_next) {
            if (cur->stillgoing && !cur->chan && cur->metric <= best->metric) {
               ast_debug(1, "(Parallel) Trying '%s' with metric %d\n", cur->interface, cur->metric);
               ret |= ring_entry(qe, cur, busies);
            }
         }
      } else {
         /* Ring just the best channel */
         ast_debug(1, "Trying '%s' with metric %d\n", best->interface, best->metric);
         ret = ring_entry(qe, best, busies);
      }
      
      /* If we have timed out, break out */
      if (qe->expire && (time(NULL) >= qe->expire)) {
         ast_debug(1, "Queue timed out while ringing members.\n");
         ret = 0;
         break;
      }
   }

   return ret;
}

/*! \brief Search for best metric and add to Round Robbin queue */
static int store_next_rr(struct queue_ent *qe, struct callattempt *outgoing)
{
   struct callattempt *best = find_best(outgoing);

   if (best) {
      /* Ring just the best channel */
      ast_debug(1, "Next is '%s' with metric %d\n", best->interface, best->metric);
      qe->parent->rrpos = best->metric % 1000;
   } else {
      /* Just increment rrpos */
      if (qe->parent->wrapped) {
         /* No more channels, start over */
         qe->parent->rrpos = 0;
      } else {
         /* Prioritize next entry */
         qe->parent->rrpos++;
      }
   }
   qe->parent->wrapped = 0;

   return 0;
}

/*! \brief Search for best metric and add to Linear queue */
static int store_next_lin(struct queue_ent *qe, struct callattempt *outgoing)
{
   struct callattempt *best = find_best(outgoing);

   if (best) {
      /* Ring just the best channel */
      ast_debug(1, "Next is '%s' with metric %d\n", best->interface, best->metric);
      qe->linpos = best->metric % 1000;
   } else {
      /* Just increment rrpos */
      if (qe->linwrapped) {
         /* No more channels, start over */
         qe->linpos = 0;
      } else {
         /* Prioritize next entry */
         qe->linpos++;
      }
   }
   qe->linwrapped = 0;

   return 0;
}

/*! \brief Playback announcement to queued members if period has elapsed */
static int say_periodic_announcement(struct queue_ent *qe, int ringing)
{
   int res = 0;
   time_t now;

   /* Get the current time */
   time(&now);

   /* Check to see if it is time to announce */
   if ((now - qe->last_periodic_announce_time) < qe->parent->periodicannouncefrequency) {
      return 0;
   }

   /* Stop the music on hold so we can play our own file */
   if (ringing) {
      ast_indicate(qe->chan,-1);
   } else {
      ast_moh_stop(qe->chan);
   }

   ast_verb(3, "Playing periodic announcement\n");
   
   if (qe->parent->randomperiodicannounce && qe->parent->numperiodicannounce) {
      qe->last_periodic_announce_sound = ((unsigned long) ast_random()) % qe->parent->numperiodicannounce;
   } else if (qe->last_periodic_announce_sound >= qe->parent->numperiodicannounce || 
      ast_str_strlen(qe->parent->sound_periodicannounce[qe->last_periodic_announce_sound]) == 0) {
      qe->last_periodic_announce_sound = 0;
   }
   
   /* play the announcement */
   res = play_file(qe->chan, ast_str_buffer(qe->parent->sound_periodicannounce[qe->last_periodic_announce_sound]));

   if (res > 0 && !valid_exit(qe, res)) {
      res = 0;
   }

   /* Resume Music on Hold if the caller is going to stay in the queue */
   if (!res) {
      if (ringing) {
         ast_indicate(qe->chan, AST_CONTROL_RINGING);
      } else {
         ast_moh_start(qe->chan, qe->moh, NULL);
      }
   }

   /* update last_periodic_announce_time */
   if (qe->parent->relativeperiodicannounce) {
      time(&qe->last_periodic_announce_time);
   } else {
      qe->last_periodic_announce_time = now;
   }

   /* Update the current periodic announcement to the next announcement */
   if (!qe->parent->randomperiodicannounce) {
      qe->last_periodic_announce_sound++;
   }
   
   return res;
}

/*! \brief Record that a caller gave up on waiting in queue */
static void record_abandoned(struct queue_ent *qe)
{
   set_queue_variables(qe->parent, qe->chan);
   ao2_lock(qe->parent);
   /*** DOCUMENTATION
   <managerEventInstance>
      <synopsis>Raised when an caller abandons the queue.</synopsis>
      <syntax>
         <xi:include xpointer="xpointer(/docs/managerEvent[@name='QueueMemberStatus']/managerEventInstance/syntax/parameter[@name='Queue'])" />
         <xi:include xpointer="xpointer(/docs/managerEvent[@name='Join']/managerEventInstance/syntax/parameter[@name='Position'])" />
         <parameter name="OriginalPosition">
            <para>The channel's original position in the queue.</para>
         </parameter>
         <parameter name="HoldTime">
            <para>The time the channel was in the queue, expressed in seconds since 00:00, Jan 1, 1970 UTC.</para>
         </parameter>
      </syntax>
   </managerEventInstance>
   ***/
   manager_event(EVENT_FLAG_AGENT, "QueueCallerAbandon",
      "Queue: %s\r\n"
      "Uniqueid: %s\r\n"
      "Position: %d\r\n"
      "OriginalPosition: %d\r\n"
      "HoldTime: %d\r\n",
      qe->parent->name, ast_channel_uniqueid(qe->chan), qe->pos, qe->opos, (int)(time(NULL) - qe->start));

   qe->parent->callsabandoned++;
   ao2_unlock(qe->parent);
}

/*! \brief RNA == Ring No Answer. Common code that is executed when we try a queue member and they don't answer. */
static void rna(int rnatime, struct queue_ent *qe, char *interface, char *membername, int autopause)
{
   ast_verb(3, "Nobody picked up in %d ms\n", rnatime);

   /* Stop ringing, and resume MOH if specified */
   if (qe->ring_when_ringing) {
      ast_indicate(qe->chan, -1);
      ast_moh_start(qe->chan, qe->moh, NULL);
   }

   if (qe->parent->eventwhencalled) {
      char vars[2048];
      /*** DOCUMENTATION
      <managerEventInstance>
         <synopsis>Raised when an agent is notified of a member in the queue and fails to answer.</synopsis>
         <syntax>
            <xi:include xpointer="xpointer(/docs/managerEvent[@name='QueueMemberStatus']/managerEventInstance/syntax/parameter[@name='Queue'])" />
            <xi:include xpointer="xpointer(/docs/managerEvent[@name='QueueMemberStatus']/managerEventInstance/syntax/parameter[@name='MemberName'])" />
            <xi:include xpointer="xpointer(/docs/managerEvent[@name='AgentCalled']/managerEventInstance/syntax/parameter[@name='Variable'])" />
            <parameter name="Member">
               <para>The queue member's channel technology or location.</para>
            </parameter>
            <parameter name="RingTime">
               <para>The time the agent was rung, expressed in seconds since 00:00, Jan 1, 1970 UTC.</para>
            </parameter>
         </syntax>
         <see-also>
            <ref type="managerEvent">AgentCalled</ref>
         </see-also>
      </managerEventInstance>
      ***/
      manager_event(EVENT_FLAG_AGENT, "AgentRingNoAnswer",
                  "Queue: %s\r\n"
                  "Uniqueid: %s\r\n"
                  "Channel: %s\r\n"
                  "Member: %s\r\n"
                  "MemberName: %s\r\n"
                  "RingTime: %d\r\n"
                  "%s",
                  qe->parent->name,
                  ast_channel_uniqueid(qe->chan),
                  ast_channel_name(qe->chan),
                  interface,
                  membername,
                  rnatime,
                  qe->parent->eventwhencalled == QUEUE_EVENT_VARIABLES ? vars2manager(qe->chan, vars, sizeof(vars)) : "");
   }
   ast_queue_log(qe->parent->name, ast_channel_uniqueid(qe->chan), membername, "RINGNOANSWER", "%d", rnatime);
   if (qe->parent->autopause != QUEUE_AUTOPAUSE_OFF && autopause) {
      if (qe->parent->autopausedelay > 0) {
         struct member *mem;
         ao2_lock(qe->parent);
         if ((mem = interface_exists(qe->parent, interface))) {
            time_t idletime = time(&idletime)-mem->lastcall;
            if ((mem->lastcall != 0) && (qe->parent->autopausedelay > idletime)) {
               ao2_unlock(qe->parent);
               ao2_ref(mem, -1);
               return;
            }
            ao2_ref(mem, -1);
         }
         ao2_unlock(qe->parent);
      }
      if (qe->parent->autopause == QUEUE_AUTOPAUSE_ON) {
         if (!set_member_paused(qe->parent->name, interface, "Auto-Pause", 1)) {
            ast_verb(3, "Auto-Pausing Queue Member %s in queue %s since they failed to answer.\n",
               interface, qe->parent->name);
         } else {
            ast_verb(3, "Failed to pause Queue Member %s in queue %s!\n", interface, qe->parent->name);
         }
      } else {
         /* If queue autopause is mode all, just don't send any queue to stop.
         * the function will stop in all queues */
         if (!set_member_paused("", interface, "Auto-Pause", 1)) {
            ast_verb(3, "Auto-Pausing Queue Member %s in all queues since they failed to answer on queue %s.\n",
                  interface, qe->parent->name);
         } else {
               ast_verb(3, "Failed to pause Queue Member %s in all queues!\n", interface);
         }
      }
   }
   return;
}

#define AST_MAX_WATCHERS 256
/*!
 * \brief Wait for a member to answer the call
 *
 * \param[in] qe the queue_ent corresponding to the caller in the queue
 * \param[in] outgoing the list of callattempts. Relevant ones will have their chan and stillgoing parameters non-zero
 * \param[in] to the amount of time (in milliseconds) to wait for a response
 * \param[out] digit if a user presses a digit to exit the queue, this is the digit the caller pressed
 * \param[in] prebusies number of busy members calculated prior to calling wait_for_answer
 * \param[in] caller_disconnect if the 'H' option is used when calling Queue(), this is used to detect if the caller pressed * to disconnect the call
 * \param[in] forwardsallowed used to detect if we should allow call forwarding, based on the 'i' option to Queue()
 *
 * \todo eventually all call forward logic should be intergerated into and replaced by ast_call_forward()
 */
static struct callattempt *wait_for_answer(struct queue_ent *qe, struct callattempt *outgoing, int *to, char *digit, int prebusies, int caller_disconnect, int forwardsallowed)
{
   const char *queue = qe->parent->name;
   struct callattempt *o, *start = NULL, *prev = NULL;
   int status;
   int numbusies = prebusies;
   int numnochan = 0;
   int stillgoing = 0;
   int orig = *to;
   struct ast_frame *f;
   struct callattempt *peer = NULL;
   struct ast_channel *winner;
   struct ast_channel *in = qe->chan;
   char on[80] = "";
   char membername[80] = "";
   long starttime = 0;
   long endtime = 0;
#ifdef HAVE_EPOLL
   struct callattempt *epollo;
#endif
   struct ast_party_connected_line connected_caller;
   char *inchan_name;

   ast_party_connected_line_init(&connected_caller);

   ast_channel_lock(qe->chan);
   inchan_name = ast_strdupa(ast_channel_name(qe->chan));
   ast_channel_unlock(qe->chan);

   starttime = (long) time(NULL);
#ifdef HAVE_EPOLL
   for (epollo = outgoing; epollo; epollo = epollo->q_next) {
      if (epollo->chan) {
         ast_poll_channel_add(in, epollo->chan);
      }
   }
#endif
   
   while (*to && !peer) {
      int numlines, retry, pos = 1;
      struct ast_channel *watchers[AST_MAX_WATCHERS];
      watchers[0] = in;
      start = NULL;

      for (retry = 0; retry < 2; retry++) {
         numlines = 0;
         for (o = outgoing; o; o = o->q_next) { /* Keep track of important channels */
            if (o->stillgoing) { /* Keep track of important channels */
               stillgoing = 1;
               if (o->chan) {
                  if (pos < AST_MAX_WATCHERS) {
                     watchers[pos++] = o->chan;
                  }
                  if (!start) {
                     start = o;
                  } else {
                     prev->call_next = o;
                  }
                  prev = o;
               }
            }
            numlines++;
         }
         if (pos > 1 /* found */ || !stillgoing /* nobody listening */ ||
            (qe->parent->strategy != QUEUE_STRATEGY_RINGALL) /* ring would not be delivered */) {
            break;
         }
         /* On "ringall" strategy we only move to the next penalty level
            when *all* ringing phones are done in the current penalty level */
         ring_one(qe, outgoing, &numbusies);
         /* and retry... */
      }
      if (pos == 1 /* not found */) {
         if (numlines == (numbusies + numnochan)) {
            ast_debug(1, "Everyone is busy at this time\n");
         } else {
            ast_debug(3, "No one is answering queue '%s' (%d numlines / %d busies / %d failed channels)\n", queue, numlines, numbusies, numnochan);
         }
         *to = 0;
         return NULL;
      }

      /* Poll for events from both the incoming channel as well as any outgoing channels */
      winner = ast_waitfor_n(watchers, pos, to);

      /* Service all of the outgoing channels */
      for (o = start; o; o = o->call_next) {
         /* We go with a fixed buffer here instead of using ast_strdupa. Using
          * ast_strdupa in a loop like this one can cause a stack overflow
          */
         char ochan_name[AST_CHANNEL_NAME];

         if (o->chan) {
            ast_channel_lock(o->chan);
            ast_copy_string(ochan_name, ast_channel_name(o->chan), sizeof(ochan_name));
            ast_channel_unlock(o->chan);
         }
         if (o->stillgoing && (o->chan) &&  (ast_channel_state(o->chan) == AST_STATE_UP)) {
            if (!peer) {
               ast_verb(3, "%s answered %s\n", ochan_name, inchan_name);
               if (!o->block_connected_update) {
                  if (o->pending_connected_update) {
                     if (ast_channel_connected_line_sub(o->chan, in, &o->connected, 0) &&
                        ast_channel_connected_line_macro(o->chan, in, &o->connected, 1, 0)) {
                        ast_channel_update_connected_line(in, &o->connected, NULL);
                     }
                  } else if (!o->dial_callerid_absent) {
                     ast_channel_lock(o->chan);
                     ast_connected_line_copy_from_caller(&connected_caller, ast_channel_caller(o->chan));
                     ast_channel_unlock(o->chan);
                     connected_caller.source = AST_CONNECTED_LINE_UPDATE_SOURCE_ANSWER;
                     if (ast_channel_connected_line_sub(o->chan, in, &connected_caller, 0) &&
                        ast_channel_connected_line_macro(o->chan, in, &connected_caller, 1, 0)) {
                        ast_channel_update_connected_line(in, &connected_caller, NULL);
                     }
                     ast_party_connected_line_free(&connected_caller);
                  }
               }
               if (o->aoc_s_rate_list) {
                  size_t encoded_size;
                  struct ast_aoc_encoded *encoded;
                  if ((encoded = ast_aoc_encode(o->aoc_s_rate_list, &encoded_size, o->chan))) {
                     ast_indicate_data(in, AST_CONTROL_AOC, encoded, encoded_size);
                     ast_aoc_destroy_encoded(encoded);
                  }
               }
               peer = o;
            }
         } else if (o->chan && (o->chan == winner)) {

            ast_copy_string(on, o->member->interface, sizeof(on));
            ast_copy_string(membername, o->member->membername, sizeof(membername));

            /* Before processing channel, go ahead and check for forwarding */
            if (!ast_strlen_zero(ast_channel_call_forward(o->chan)) && !forwardsallowed) {
               ast_verb(3, "Forwarding %s to '%s' prevented.\n", inchan_name, ast_channel_call_forward(o->chan));
               numnochan++;
               do_hang(o);
               winner = NULL;
               continue;
            } else if (!ast_strlen_zero(ast_channel_call_forward(o->chan))) {
               struct ast_channel *original = o->chan;
               char tmpchan[256];
               char *stuff;
               char *tech;

               ast_copy_string(tmpchan, ast_channel_call_forward(o->chan), sizeof(tmpchan));
               if ((stuff = strchr(tmpchan, '/'))) {
                  *stuff++ = '\0';
                  tech = tmpchan;
               } else {
                  snprintf(tmpchan, sizeof(tmpchan), "%s@%s", ast_channel_call_forward(o->chan), ast_channel_context(o->chan));
                  stuff = tmpchan;
                  tech = "Local";
               }
               if (!strcasecmp(tech, "Local")) {
                  /*
                   * Drop the connected line update block for local channels since
                   * this is going to run dialplan and the user can change his
                   * mind about what connected line information he wants to send.
                   */
                  o->block_connected_update = 0;
               }

               ast_cel_report_event(in, AST_CEL_FORWARD, NULL, ast_channel_call_forward(o->chan), NULL);

               ast_verb(3, "Now forwarding %s to '%s/%s' (thanks to %s)\n", inchan_name, tech, stuff, ochan_name);
               /* Setup parameters */
               o->chan = ast_request(tech, ast_channel_nativeformats(in), in, stuff, &status);
               if (!o->chan) {
                  ast_log(LOG_NOTICE,
                     "Forwarding failed to create channel to dial '%s/%s'\n",
                     tech, stuff);
                  o->stillgoing = 0;
                  numnochan++;
               } else {
                  ast_channel_lock_both(o->chan, original);
                  ast_party_redirecting_copy(ast_channel_redirecting(o->chan),
                     ast_channel_redirecting(original));
                  ast_channel_unlock(o->chan);
                  ast_channel_unlock(original);

                  ast_channel_lock_both(o->chan, in);
                  ast_channel_inherit_variables(in, o->chan);
                  ast_channel_datastore_inherit(in, o->chan);

                  if (o->pending_connected_update) {
                     /*
                      * Re-seed the callattempt's connected line information with
                      * previously acquired connected line info from the queued
                      * channel.  The previously acquired connected line info could
                      * have been set through the CONNECTED_LINE dialplan function.
                      */
                     o->pending_connected_update = 0;
                     ast_party_connected_line_copy(&o->connected, ast_channel_connected(in));
                  }

                  ast_channel_accountcode_set(o->chan, ast_channel_accountcode(in));

                  if (!ast_channel_redirecting(o->chan)->from.number.valid
                     || ast_strlen_zero(ast_channel_redirecting(o->chan)->from.number.str)) {
                     /*
                      * The call was not previously redirected so it is
                      * now redirected from this number.
                      */
                     ast_party_number_free(&ast_channel_redirecting(o->chan)->from.number);
                     ast_party_number_init(&ast_channel_redirecting(o->chan)->from.number);
                     ast_channel_redirecting(o->chan)->from.number.valid = 1;
                     ast_channel_redirecting(o->chan)->from.number.str =
                        ast_strdup(S_OR(ast_channel_macroexten(in), ast_channel_exten(in)));
                  }

                  ast_channel_dialed(o->chan)->transit_network_select = ast_channel_dialed(in)->transit_network_select;

                  o->dial_callerid_absent = !ast_channel_caller(o->chan)->id.number.valid
                     || ast_strlen_zero(ast_channel_caller(o->chan)->id.number.str);
                  ast_connected_line_copy_from_caller(ast_channel_connected(o->chan),
                     ast_channel_caller(in));

                  ast_channel_unlock(in);
                  if (qe->parent->strategy != QUEUE_STRATEGY_RINGALL
                     && !o->block_connected_update) {
                     struct ast_party_redirecting redirecting;

                     /*
                      * Redirecting updates to the caller make sense only on single
                      * call at a time strategies.
                      *
                      * We must unlock o->chan before calling
                      * ast_channel_redirecting_macro, because we put o->chan into
                      * autoservice there.  That is pretty much a guaranteed
                      * deadlock.  This is why the handling of o->chan's lock may
                      * seem a bit unusual here.
                      */
                     ast_party_redirecting_init(&redirecting);
                     ast_party_redirecting_copy(&redirecting, ast_channel_redirecting(o->chan));
                     ast_channel_unlock(o->chan);
                     if (ast_channel_redirecting_sub(o->chan, in, &redirecting, 0) &&
                        ast_channel_redirecting_macro(o->chan, in, &redirecting, 1, 0)) {
                        ast_channel_update_redirecting(in, &redirecting, NULL);
                     }
                     ast_party_redirecting_free(&redirecting);
                  } else {
                     ast_channel_unlock(o->chan);
                  }

                  if (ast_call(o->chan, stuff, 0)) {
                     ast_log(LOG_NOTICE, "Forwarding failed to dial '%s/%s'\n",
                        tech, stuff);
                     do_hang(o);
                     numnochan++;
                  }
               }
               /* Hangup the original channel now, in case we needed it */
               ast_hangup(winner);
               continue;
            }
            f = ast_read(winner);
            if (f) {
               if (f->frametype == AST_FRAME_CONTROL) {
                  switch (f->subclass.integer) {
                  case AST_CONTROL_ANSWER:
                     /* This is our guy if someone answered. */
                     if (!peer) {
                        ast_verb(3, "%s answered %s\n", ochan_name, inchan_name);
                        if (!o->block_connected_update) {
                           if (o->pending_connected_update) {
                              if (ast_channel_connected_line_sub(o->chan, in, &o->connected, 0) &&
                                 ast_channel_connected_line_macro(o->chan, in, &o->connected, 1, 0)) {
                                 ast_channel_update_connected_line(in, &o->connected, NULL);
                              }
                           } else if (!o->dial_callerid_absent) {
                              ast_channel_lock(o->chan);
                              ast_connected_line_copy_from_caller(&connected_caller, ast_channel_caller(o->chan));
                              ast_channel_unlock(o->chan);
                              connected_caller.source = AST_CONNECTED_LINE_UPDATE_SOURCE_ANSWER;
                              if (ast_channel_connected_line_sub(o->chan, in, &connected_caller, 0) &&
                                 ast_channel_connected_line_macro(o->chan, in, &connected_caller, 1, 0)) {
                                 ast_channel_update_connected_line(in, &connected_caller, NULL);
                              }
                              ast_party_connected_line_free(&connected_caller);
                           }
                        }
                        if (o->aoc_s_rate_list) {
                           size_t encoded_size;
                           struct ast_aoc_encoded *encoded;
                           if ((encoded = ast_aoc_encode(o->aoc_s_rate_list, &encoded_size, o->chan))) {
                              ast_indicate_data(in, AST_CONTROL_AOC, encoded, encoded_size);
                              ast_aoc_destroy_encoded(encoded);
                           }
                        }
                        peer = o;
                     }
                     break;
                  case AST_CONTROL_BUSY:
                     ast_verb(3, "%s is busy\n", ochan_name);
                     if (ast_channel_cdr(in)) {
                        ast_cdr_busy(ast_channel_cdr(in));
                     }
                     do_hang(o);
                     endtime = (long) time(NULL);
                     endtime -= starttime;
                     rna(endtime * 1000, qe, on, membername, qe->parent->autopausebusy);
                     if (qe->parent->strategy != QUEUE_STRATEGY_RINGALL) {
                        if (qe->parent->timeoutrestart) {
                           *to = orig;
                        }
                        /* Have enough time for a queue member to answer? */
                        if (*to > 500) {
                           ring_one(qe, outgoing, &numbusies);
                           starttime = (long) time(NULL);
                        }
                     }
                     numbusies++;
                     break;
                  case AST_CONTROL_CONGESTION:
                     ast_verb(3, "%s is circuit-busy\n", ochan_name);
                     if (ast_channel_cdr(in)) {
                        ast_cdr_busy(ast_channel_cdr(in));
                     }
                     endtime = (long) time(NULL);
                     endtime -= starttime;
                     rna(endtime * 1000, qe, on, membername, qe->parent->autopauseunavail);
                     do_hang(o);
                     if (qe->parent->strategy != QUEUE_STRATEGY_RINGALL) {
                        if (qe->parent->timeoutrestart) {
                           *to = orig;
                        }
                        if (*to > 500) {
                           ring_one(qe, outgoing, &numbusies);
                           starttime = (long) time(NULL);
                        }
                     }
                     numbusies++;
                     break;
                  case AST_CONTROL_RINGING:
                     ast_verb(3, "%s is ringing\n", ochan_name);

                     /* Start ring indication when the channel is ringing, if specified */
                     if (qe->ring_when_ringing) {
                        ast_moh_stop(qe->chan);
                        ast_indicate(qe->chan, AST_CONTROL_RINGING);
                     }
                     break;
                  case AST_CONTROL_OFFHOOK:
                     /* Ignore going off hook */
                     break;
                  case AST_CONTROL_CONNECTED_LINE:
                     if (o->block_connected_update) {
                        ast_verb(3, "Connected line update to %s prevented.\n", inchan_name);
                        break;
                     }
                     if (qe->parent->strategy == QUEUE_STRATEGY_RINGALL) {
                        struct ast_party_connected_line connected;

                        ast_verb(3, "%s connected line has changed. Saving it until answer for %s\n", ochan_name, inchan_name);
                        ast_party_connected_line_set_init(&connected, &o->connected);
                        ast_connected_line_parse_data(f->data.ptr, f->datalen, &connected);
                        ast_party_connected_line_set(&o->connected, &connected, NULL);
                        ast_party_connected_line_free(&connected);
                        o->pending_connected_update = 1;
                        break;
                     }

                     /*
                      * Prevent using the CallerID from the outgoing channel since we
                      * got a connected line update from it.
                      */
                     o->dial_callerid_absent = 1;

                     if (ast_channel_connected_line_sub(o->chan, in, f, 1) &&
                        ast_channel_connected_line_macro(o->chan, in, f, 1, 1)) {
                        ast_indicate_data(in, AST_CONTROL_CONNECTED_LINE, f->data.ptr, f->datalen);
                     }
                     break;
                  case AST_CONTROL_AOC:
                     {
                        struct ast_aoc_decoded *decoded = ast_aoc_decode(f->data.ptr, f->datalen, o->chan);
                        if (decoded && (ast_aoc_get_msg_type(decoded) == AST_AOC_S)) {
                           ast_aoc_destroy_decoded(o->aoc_s_rate_list);
                           o->aoc_s_rate_list = decoded;
                        } else {
                           ast_aoc_destroy_decoded(decoded);
                        }
                     }
                     break;
                  case AST_CONTROL_REDIRECTING:
                     if (qe->parent->strategy == QUEUE_STRATEGY_RINGALL) {
                        /*
                         * Redirecting updates to the caller make sense only on single
                         * call at a time strategies.
                         */
                        break;
                     }
                     if (o->block_connected_update) {
                        ast_verb(3, "Redirecting update to %s prevented\n",
                           inchan_name);
                        break;
                     }
                     ast_verb(3, "%s redirecting info has changed, passing it to %s\n",
                        ochan_name, inchan_name);
                     if (ast_channel_redirecting_sub(o->chan, in, f, 1) &&
                        ast_channel_redirecting_macro(o->chan, in, f, 1, 1)) {
                        ast_indicate_data(in, AST_CONTROL_REDIRECTING, f->data.ptr, f->datalen);
                     }
                     break;
                  case AST_CONTROL_PVT_CAUSE_CODE:
                     ast_indicate_data(in, AST_CONTROL_PVT_CAUSE_CODE, f->data.ptr, f->datalen);
                     break;
                  default:
                     ast_debug(1, "Dunno what to do with control type %d\n", f->subclass.integer);
                     break;
                  }
               }
               ast_frfree(f);
            } else { /* ast_read() returned NULL */
               endtime = (long) time(NULL) - starttime;
               rna(endtime * 1000, qe, on, membername, 1);
               do_hang(o);
               if (qe->parent->strategy != QUEUE_STRATEGY_RINGALL) {
                  if (qe->parent->timeoutrestart) {
                     *to = orig;
                  }
                  if (*to > 500) {
                     ring_one(qe, outgoing, &numbusies);
                     starttime = (long) time(NULL);
                  }
               }
            }
         }
      }

      /* If we received an event from the caller, deal with it. */
      if (winner == in) {
         f = ast_read(in);
         if (!f || ((f->frametype == AST_FRAME_CONTROL) && (f->subclass.integer == AST_CONTROL_HANGUP))) {
            /* Got hung up */
            *to = -1;
            if (f) {
               if (f->data.uint32) {
                  ast_channel_hangupcause_set(in, f->data.uint32);
               }
               ast_frfree(f);
            }
            return NULL;
         }

         if ((f->frametype == AST_FRAME_DTMF) && caller_disconnect && (f->subclass.integer == '*')) {
            ast_verb(3, "User hit %c to disconnect call.\n", f->subclass.integer);
            *to = 0;
            ast_frfree(f);
            return NULL;
         }
         if ((f->frametype == AST_FRAME_DTMF) && valid_exit(qe, f->subclass.integer)) {
            ast_verb(3, "User pressed digit: %c\n", f->subclass.integer);
            *to = 0;
            *digit = f->subclass.integer;
            ast_frfree(f);
            return NULL;
         }

         /* Send the frame from the in channel to all outgoing channels. */
         for (o = start; o; o = o->call_next) {
            if (!o->stillgoing || !o->chan) {
               /* This outgoing channel has died so don't send the frame to it. */
               continue;
            }
            switch (f->frametype) {
            case AST_FRAME_CONTROL:
               switch (f->subclass.integer) {
               case AST_CONTROL_CONNECTED_LINE:
                  if (ast_channel_connected_line_sub(in, o->chan, f, 1) &&
                     ast_channel_connected_line_macro(in, o->chan, f, 0, 1)) {
                     ast_indicate_data(o->chan, f->subclass.integer, f->data.ptr, f->datalen);
                  }
                  break;
               case AST_CONTROL_REDIRECTING:
                  if (ast_channel_redirecting_sub(in, o->chan, f, 1) &&
                     ast_channel_redirecting_macro(in, o->chan, f, 0, 1)) {
                     ast_indicate_data(o->chan, f->subclass.integer, f->data.ptr, f->datalen);
                  }
                  break;
               default:
                  /* We are not going to do anything with this frame. */
                  goto skip_frame;
               }
               break;
            default:
               /* We are not going to do anything with this frame. */
               goto skip_frame;
            }
         }
skip_frame:;

         ast_frfree(f);
      }
      if (!*to) {
         for (o = start; o; o = o->call_next) {
            rna(orig, qe, o->interface, o->member->membername, 1);
         }
      }
   }

#ifdef HAVE_EPOLL
   for (epollo = outgoing; epollo; epollo = epollo->q_next) {
      if (epollo->chan) {
         ast_poll_channel_del(in, epollo->chan);
      }
   }
#endif

   return peer;
}

/*! 
 * \brief Check if we should start attempting to call queue members.
 *
 * A simple process, really. Count the number of members who are available
 * to take our call and then see if we are in a position in the queue at
 * which a member could accept our call.
 *
 * \param[in] qe The caller who wants to know if it is his turn
 * \retval 0 It is not our turn
 * \retval 1 It is our turn
 */
static int is_our_turn(struct queue_ent *qe)
{
   struct queue_ent *ch;
   int res;
   int avl;
   int idx = 0;
   /* This needs a lock. How many members are available to be served? */
   ao2_lock(qe->parent);

   avl = num_available_members(qe->parent);

   ch = qe->parent->head;

   ast_debug(1, "There %s %d available %s.\n", avl != 1 ? "are" : "is", avl, avl != 1 ? "members" : "member");

   while ((idx < avl) && (ch) && (ch != qe)) {
      if (!ch->pending) {
         idx++;
      }
      ch = ch->next;       
   }

   ao2_unlock(qe->parent);
   /* If the queue entry is within avl [the number of available members] calls from the top ... 
    * Autofill and position check added to support autofill=no (as only calls
    * from the front of the queue are valid when autofill is disabled)
    */
   if (ch && idx < avl && (qe->parent->autofill || qe->pos == 1)) {
      ast_debug(1, "It's our turn (%s).\n", ast_channel_name(qe->chan));
      res = 1;
   } else {
      ast_debug(1, "It's not our turn (%s).\n", ast_channel_name(qe->chan));
      res = 0;
   }

   return res;
}

/*!
 * \brief update rules for queues
 *
 * Calculate min/max penalties making sure if relative they stay within bounds.
 * Update queues penalty and set dialplan vars, goto next list entry.
*/
static void update_qe_rule(struct queue_ent *qe)
{
   int max_penalty = qe->pr->max_relative ? qe->max_penalty + qe->pr->max_value : qe->pr->max_value;
   int min_penalty = qe->pr->min_relative ? qe->min_penalty + qe->pr->min_value : qe->pr->min_value;
   char max_penalty_str[20], min_penalty_str[20]; 
   /* a relative change to the penalty could put it below 0 */
   if (max_penalty < 0) {
      max_penalty = 0;
   }
   if (min_penalty < 0) {
      min_penalty = 0;
   }
   if (min_penalty > max_penalty) {
      min_penalty = max_penalty;
   }
   snprintf(max_penalty_str, sizeof(max_penalty_str), "%d", max_penalty);
   snprintf(min_penalty_str, sizeof(min_penalty_str), "%d", min_penalty);
   pbx_builtin_setvar_helper(qe->chan, "QUEUE_MAX_PENALTY", max_penalty_str);
   pbx_builtin_setvar_helper(qe->chan, "QUEUE_MIN_PENALTY", min_penalty_str);
   qe->max_penalty = max_penalty;
   qe->min_penalty = min_penalty;
   ast_debug(3, "Setting max penalty to %d and min penalty to %d for caller %s since %d seconds have elapsed\n", qe->max_penalty, qe->min_penalty, ast_channel_name(qe->chan), qe->pr->time);
   qe->pr = AST_LIST_NEXT(qe->pr, list);
}

/*! \brief The waiting areas for callers who are not actively calling members
 *
 * This function is one large loop. This function will return if a caller
 * either exits the queue or it becomes that caller's turn to attempt calling
 * queue members. Inside the loop, we service the caller with periodic announcements,
 * holdtime announcements, etc. as configured in queues.conf
 *
 * \retval  0 if the caller's turn has arrived
 * \retval -1 if the caller should exit the queue.
 */
static int wait_our_turn(struct queue_ent *qe, int ringing, enum queue_result *reason)
{
   int res = 0;

   /* This is the holding pen for callers 2 through maxlen */
   for (;;) {

      if (is_our_turn(qe)) {
         break;
      }

      /* If we have timed out, break out */
      if (qe->expire && (time(NULL) >= qe->expire)) {
         *reason = QUEUE_TIMEOUT;
         break;
      }

      if (qe->parent->leavewhenempty) {
         int status = 0;

         if ((status = get_member_status(qe->parent, qe->max_penalty, qe->min_penalty, qe->parent->leavewhenempty))) {
            *reason = QUEUE_LEAVEEMPTY;
            ast_queue_log(qe->parent->name, ast_channel_uniqueid(qe->chan), "NONE", "EXITEMPTY", "%d|%d|%ld", qe->pos, qe->opos, (long) time(NULL) - qe->start);
            leave_queue(qe);
            break;
         }
      }

      /* Make a position announcement, if enabled */
      if (qe->parent->announcefrequency &&
         (res = say_position(qe,ringing))) {
         break;
      }

      /* If we have timed out, break out */
      if (qe->expire && (time(NULL) >= qe->expire)) {
         *reason = QUEUE_TIMEOUT;
         break;
      }

      /* Make a periodic announcement, if enabled */
      if (qe->parent->periodicannouncefrequency &&
         (res = say_periodic_announcement(qe,ringing)))
         break;
      
      /* see if we need to move to the next penalty level for this queue */
      while (qe->pr && ((time(NULL) - qe->start) >= qe->pr->time)) {
         update_qe_rule(qe);
      }

      /* If we have timed out, break out */
      if (qe->expire && (time(NULL) >= qe->expire)) {
         *reason = QUEUE_TIMEOUT;
         break;
      }
      
      /* Wait a second before checking again */
      if ((res = ast_waitfordigit(qe->chan, RECHECK * 1000))) {
         if (res > 0 && !valid_exit(qe, res)) {
            res = 0;
         } else {
            break;
         }
      }
      
      /* If we have timed out, break out */
      if (qe->expire && (time(NULL) >= qe->expire)) {
         *reason = QUEUE_TIMEOUT;
         break;
      }
   }

   return res;
}

/*!
 * \brief update the queue status
 * \retval Always 0
*/
static int update_queue(struct call_queue *q, struct member *member, int callcompletedinsl, int newtalktime)
{
   int oldtalktime;

   struct member *mem;
   struct call_queue *qtmp;
   struct ao2_iterator queue_iter;

   if (shared_lastcall) {
      queue_iter = ao2_iterator_init(queues, 0);
      while ((qtmp = ao2_t_iterator_next(&queue_iter, "Iterate through queues"))) {
         ao2_lock(qtmp);
         if ((mem = ao2_find(qtmp->members, member, OBJ_POINTER))) {
            time(&mem->lastcall);
            mem->calls++;
            mem->lastqueue = q;
            ao2_ref(mem, -1);
         }
         ao2_unlock(qtmp);
         queue_t_unref(qtmp, "Done with iterator");
      }
      ao2_iterator_destroy(&queue_iter);
   } else {
      ao2_lock(q);
      time(&member->lastcall);
      member->calls++;
      member->lastqueue = q;
      ao2_unlock(q);
   }  
   ao2_lock(q);
   q->callscompleted++;
   if (callcompletedinsl) {
      q->callscompletedinsl++;
   }
   /* Calculate talktime using the same exponential average as holdtime code*/
   oldtalktime = q->talktime;
   q->talktime = (((oldtalktime << 2) - oldtalktime) + newtalktime) >> 2;
   ao2_unlock(q);
   return 0;
}

/*! \brief Calculate the metric of each member in the outgoing callattempts
 *
 * A numeric metric is given to each member depending on the ring strategy used
 * by the queue. Members with lower metrics will be called before members with
 * higher metrics
 * \retval -1 if penalties are exceeded
 * \retval 0 otherwise
 */
static int calc_metric(struct call_queue *q, struct member *mem, int pos, struct queue_ent *qe, struct callattempt *tmp)
{
   /* disregarding penalty on too few members? */
   int membercount = ao2_container_count(q->members);
   unsigned char usepenalty = (membercount <= q->penaltymemberslimit) ? 0 : 1;

   if (usepenalty) {
      if ((qe->max_penalty && (mem->penalty > qe->max_penalty)) ||
         (qe->min_penalty && (mem->penalty < qe->min_penalty))) {
         return -1;
      }
   } else {
      ast_debug(1, "Disregarding penalty, %d members and %d in penaltymemberslimit.\n",
           membercount, q->penaltymemberslimit);
   }

   switch (q->strategy) {
   case QUEUE_STRATEGY_RINGALL:
      /* Everyone equal, except for penalty */
      tmp->metric = mem->penalty * 1000000 * usepenalty;
      break;
   case QUEUE_STRATEGY_LINEAR:
      if (pos < qe->linpos) {
         tmp->metric = 1000 + pos;
      } else {
         if (pos > qe->linpos) {
            /* Indicate there is another priority */
            qe->linwrapped = 1;
         }
         tmp->metric = pos;
      }
      tmp->metric += mem->penalty * 1000000 * usepenalty;
      break;
   case QUEUE_STRATEGY_RRORDERED:
   case QUEUE_STRATEGY_RRMEMORY:
      if (pos < q->rrpos) {
         tmp->metric = 1000 + pos;
      } else {
         if (pos > q->rrpos) {
            /* Indicate there is another priority */
            q->wrapped = 1;
         }
         tmp->metric = pos;
      }
      tmp->metric += mem->penalty * 1000000 * usepenalty;
      break;
   case QUEUE_STRATEGY_RANDOM:
      tmp->metric = ast_random() % 1000;
      tmp->metric += mem->penalty * 1000000 * usepenalty;
      break;
   case QUEUE_STRATEGY_WRANDOM:
      tmp->metric = ast_random() % ((1 + mem->penalty) * 1000);
      break;
   case QUEUE_STRATEGY_FEWESTCALLS:
      tmp->metric = mem->calls;
      tmp->metric += mem->penalty * 1000000 * usepenalty;
      break;
   case QUEUE_STRATEGY_LEASTRECENT:
      if (!mem->lastcall) {
         tmp->metric = 0;
      } else {
         tmp->metric = 1000000 - (time(NULL) - mem->lastcall);
      }
      tmp->metric += mem->penalty * 1000000 * usepenalty;
      break;
   default:
      ast_log(LOG_WARNING, "Can't calculate metric for unknown strategy %d\n", q->strategy);
      break;
   }
   return 0;
}

enum agent_complete_reason {
   CALLER,
   AGENT,
   TRANSFER
};

/*! \brief Send out AMI message with member call completion status information */
static void send_agent_complete(const struct queue_ent *qe, const char *queuename,
   const struct ast_channel *peer, const struct member *member, time_t callstart,
   char *vars, size_t vars_len, enum agent_complete_reason rsn)
{
   const char *reason = NULL; /* silence dumb compilers */

   if (!qe->parent->eventwhencalled) {
      return;
   }

   switch (rsn) {
   case CALLER:
      reason = "caller";
      break;
   case AGENT:
      reason = "agent";
      break;
   case TRANSFER:
      reason = "transfer";
      break;
   }

   /*** DOCUMENTATION
   <managerEventInstance>
      <synopsis>Raised when an agent has finished servicing a member in the queue.</synopsis>
      <syntax>
         <xi:include xpointer="xpointer(/docs/managerEvent[@name='QueueMemberStatus']/managerEventInstance/syntax/parameter[@name='Queue'])" />
         <xi:include xpointer="xpointer(/docs/managerEvent[@name='AgentRingNoAnswer']/managerEventInstance/syntax/parameter[@name='Member'])" />
         <xi:include xpointer="xpointer(/docs/managerEvent[@name='QueueMemberStatus']/managerEventInstance/syntax/parameter[@name='MemberName'])" />
         <xi:include xpointer="xpointer(/docs/managerEvent[@name='QueueCallerAbandon']/managerEventInstance/syntax/parameter[@name='HoldTime'])" />
         <xi:include xpointer="xpointer(/docs/managerEvent[@name='AgentCalled']/managerEventInstance/syntax/parameter[@name='Variable'])" />
         <parameter name="TalkTime">
            <para>The time the agent talked with the member in the queue, expressed in seconds since 00:00, Jan 1, 1970 UTC.</para>
         </parameter>
         <parameter name="Reason">
            <enumlist>
               <enum name="caller"/>
               <enum name="agent"/>
               <enum name="transfer"/>
            </enumlist>
         </parameter>
      </syntax>
      <see-also>
         <ref type="managerEvent">AgentCalled</ref>
         <ref type="managerEvent">AgentConnect</ref>
      </see-also>
   </managerEventInstance>
   ***/
   manager_event(EVENT_FLAG_AGENT, "AgentComplete",
      "Queue: %s\r\n"
      "Uniqueid: %s\r\n"
      "Channel: %s\r\n"
      "Member: %s\r\n"
      "MemberName: %s\r\n"
      "HoldTime: %ld\r\n"
      "TalkTime: %ld\r\n"
      "Reason: %s\r\n"
      "%s",
      queuename, ast_channel_uniqueid(qe->chan), ast_channel_name(peer), member->interface, member->membername,
      (long)(callstart - qe->start), (long)(time(NULL) - callstart), reason,
      qe->parent->eventwhencalled == QUEUE_EVENT_VARIABLES ? vars2manager(qe->chan, vars, vars_len) : "");
}

struct queue_transfer_ds {
   struct queue_ent *qe;
   struct member *member;
   time_t starttime;
   int callcompletedinsl;
};

static void queue_transfer_destroy(void *data)
{
   struct queue_transfer_ds *qtds = data;
   ast_free(qtds);
}

/*! \brief a datastore used to help correctly log attended transfers of queue callers
 */
static const struct ast_datastore_info queue_transfer_info = {
   .type = "queue_transfer",
   .chan_fixup = queue_transfer_fixup,
   .destroy = queue_transfer_destroy,
};

/*! \brief Log an attended transfer when a queue caller channel is masqueraded
 *
 * When a caller is masqueraded, we want to log a transfer. Fixup time is the closest we can come to when
 * the actual transfer occurs. This happens during the masquerade after datastores are moved from old_chan
 * to new_chan. This is why new_chan is referenced for exten, context, and datastore information.
 *
 * At the end of this, we want to remove the datastore so that this fixup function is not called on any
 * future masquerades of the caller during the current call.
 */
static void queue_transfer_fixup(void *data, struct ast_channel *old_chan, struct ast_channel *new_chan)
{
   struct queue_transfer_ds *qtds = data;
   struct queue_ent *qe = qtds->qe;
   struct member *member = qtds->member;
   time_t callstart = qtds->starttime;
   int callcompletedinsl = qtds->callcompletedinsl;
   struct ast_datastore *datastore;

   ast_queue_log(qe->parent->name, ast_channel_uniqueid(qe->chan), member->membername, "TRANSFER", "%s|%s|%ld|%ld|%d",
            ast_channel_exten(new_chan), ast_channel_context(new_chan), (long) (callstart - qe->start),
            (long) (time(NULL) - callstart), qe->opos);

   update_queue(qe->parent, member, callcompletedinsl, (time(NULL) - callstart));
   
   /* No need to lock the channels because they are already locked in ast_do_masquerade */
   if ((datastore = ast_channel_datastore_find(old_chan, &queue_transfer_info, NULL))) {
      ast_channel_datastore_remove(old_chan, datastore);
   } else {
      ast_log(LOG_WARNING, "Can't find the queue_transfer datastore.\n");
   }
}

/*! \brief mechanism to tell if a queue caller was atxferred by a queue member.
 *
 * When a caller is atxferred, then the queue_transfer_info datastore
 * is removed from the channel. If it's still there after the bridge is
 * broken, then the caller was not atxferred.
 *
 * \note Only call this with chan locked
 */
static int attended_transfer_occurred(struct ast_channel *chan)
{
   return ast_channel_datastore_find(chan, &queue_transfer_info, NULL) ? 0 : 1;
}

/*! \brief create a datastore for storing relevant info to log attended transfers in the queue_log
 */
static struct ast_datastore *setup_transfer_datastore(struct queue_ent *qe, struct member *member, time_t starttime, int callcompletedinsl)
{
   struct ast_datastore *ds;
   struct queue_transfer_ds *qtds = ast_calloc(1, sizeof(*qtds));

   if (!qtds) {
      ast_log(LOG_WARNING, "Memory allocation error!\n");
      return NULL;
   }

   ast_channel_lock(qe->chan);
   if (!(ds = ast_datastore_alloc(&queue_transfer_info, NULL))) {
      ast_channel_unlock(qe->chan);
      ast_free(qtds);
      ast_log(LOG_WARNING, "Unable to create transfer datastore. queue_log will not show attended transfer\n");
      return NULL;
   }

   qtds->qe = qe;
   /* This member is refcounted in try_calling, so no need to add it here, too */
   qtds->member = member;
   qtds->starttime = starttime;
   qtds->callcompletedinsl = callcompletedinsl;
   ds->data = qtds;
   ast_channel_datastore_add(qe->chan, ds);
   ast_channel_unlock(qe->chan);
   return ds;
}

struct queue_end_bridge {
   struct call_queue *q;
   struct ast_channel *chan;
};

static void end_bridge_callback_data_fixup(struct ast_bridge_config *bconfig, struct ast_channel *originator, struct ast_channel *terminator)
{
   struct queue_end_bridge *qeb = bconfig->end_bridge_callback_data;
   ao2_ref(qeb, +1);
   qeb->chan = originator;
}

static void end_bridge_callback(void *data)
{
   struct queue_end_bridge *qeb = data;
   struct call_queue *q = qeb->q;
   struct ast_channel *chan = qeb->chan;

   if (ao2_ref(qeb, -1) == 1) {
      set_queue_variables(q, chan);
      /* This unrefs the reference we made in try_calling when we allocated qeb */
      queue_t_unref(q, "Expire bridge_config reference");
   }
}

/*!
 * \internal
 * \brief A large function which calls members, updates statistics, and bridges the caller and a member
 *
 * Here is the process of this function
 * 1. Process any options passed to the Queue() application. Options here mean the third argument to Queue()
 * 2. Iterate trough the members of the queue, creating a callattempt corresponding to each member. During this
 *    iteration, we also check the dialed_interfaces datastore to see if we have already attempted calling this
 *    member. If we have, we do not create a callattempt. This is in place to prevent call forwarding loops. Also
 *    during each iteration, we call calc_metric to determine which members should be rung when.
 * 3. Call ring_one to place a call to the appropriate member(s)
 * 4. Call wait_for_answer to wait for an answer. If no one answers, return.
 * 5. Take care of any holdtime announcements, member delays, or other options which occur after a call has been answered.
 * 6. Start the monitor or mixmonitor if the option is set
 * 7. Remove the caller from the queue to allow other callers to advance
 * 8. Bridge the call.
 * 9. Do any post processing after the call has disconnected.
 *
 * \param[in] qe the queue_ent structure which corresponds to the caller attempting to reach members
 * \param[in] opts the options passed as the third parameter to the Queue() application
 * \param[in] opt_args the options passed as the third parameter to the Queue() application
 * \param[in] announceoverride filename to play to user when waiting 
 * \param[in] url the url passed as the fourth parameter to the Queue() application
 * \param[in,out] tries the number of times we have tried calling queue members
 * \param[out] noption set if the call to Queue() has the 'n' option set.
 * \param[in] agi the agi passed as the fifth parameter to the Queue() application
 * \param[in] macro the macro passed as the sixth parameter to the Queue() application
 * \param[in] gosub the gosub passed as the seventh parameter to the Queue() application
 * \param[in] ringing 1 if the 'r' option is set, otherwise 0
 */
static int try_calling(struct queue_ent *qe, const struct ast_flags opts, char **opt_args, char *announceoverride, const char *url, int *tries, int *noption, const char *agi, const char *macro, const char *gosub, int ringing)
{
   struct member *cur;
   struct callattempt *outgoing = NULL; /* the list of calls we are building */
   int to, orig;
   char oldexten[AST_MAX_EXTENSION]="";
   char oldcontext[AST_MAX_CONTEXT]="";
   char queuename[256]="";
   char interfacevar[256]="";
   struct ast_channel *peer;
   struct ast_channel *which;
   struct callattempt *lpeer;
   struct member *member;
   struct ast_app *application;
   int res = 0, bridge = 0;
   int numbusies = 0;
   int x=0;
   char *announce = NULL;
   char digit = 0;
   time_t callstart;
   time_t now = time(NULL);
   struct ast_bridge_config bridge_config;
   char nondataquality = 1;
   char *agiexec = NULL;
   char *macroexec = NULL;
   char *gosubexec = NULL;
   const char *monitorfilename;
   const char *monitor_exec;
   const char *monitor_options;
   char tmpid[256], tmpid2[256];
   char meid[1024], meid2[1024];
   char mixmonargs[1512];
   struct ast_app *mixmonapp = NULL;
   char *p;
   char vars[2048];
   int forwardsallowed = 1;
   int block_connected_line = 0;
   int callcompletedinsl;
   struct ao2_iterator memi;
   struct ast_datastore *datastore, *transfer_ds;
   struct queue_end_bridge *queue_end_bridge = NULL;

   ast_channel_lock(qe->chan);
   datastore = ast_channel_datastore_find(qe->chan, &dialed_interface_info, NULL);
   ast_channel_unlock(qe->chan);

   memset(&bridge_config, 0, sizeof(bridge_config));
   tmpid[0] = 0;
   meid[0] = 0;
   time(&now);

   /* If we've already exceeded our timeout, then just stop
    * This should be extremely rare. queue_exec will take care
    * of removing the caller and reporting the timeout as the reason.
    */
   if (qe->expire && now >= qe->expire) {
      res = 0;
      goto out;
   }

   if (ast_test_flag(&opts, OPT_CALLEE_TRANSFER)) {
      ast_set_flag(&(bridge_config.features_callee), AST_FEATURE_REDIRECT);
   }
   if (ast_test_flag(&opts, OPT_CALLER_TRANSFER)) {
      ast_set_flag(&(bridge_config.features_caller), AST_FEATURE_REDIRECT);
   }
   if (ast_test_flag(&opts, OPT_CALLEE_AUTOMON)) {
      ast_set_flag(&(bridge_config.features_callee), AST_FEATURE_AUTOMON);
   }
   if (ast_test_flag(&opts, OPT_CALLER_AUTOMON)) {
      ast_set_flag(&(bridge_config.features_caller), AST_FEATURE_AUTOMON);
   }
   if (ast_test_flag(&opts, OPT_GO_ON)) {
      ast_set_flag(&(bridge_config.features_caller), AST_FEATURE_NO_H_EXTEN);
   }
   if (ast_test_flag(&opts, OPT_DATA_QUALITY)) {
      nondataquality = 0;
   }
   if (ast_test_flag(&opts, OPT_CALLEE_HANGUP)) {
      ast_set_flag(&(bridge_config.features_callee), AST_FEATURE_DISCONNECT);
   }
   if (ast_test_flag(&opts, OPT_CALLER_HANGUP)) {
      ast_set_flag(&(bridge_config.features_caller), AST_FEATURE_DISCONNECT);
   }
   if (ast_test_flag(&opts, OPT_CALLEE_PARK)) {
      ast_set_flag(&(bridge_config.features_callee), AST_FEATURE_PARKCALL);
   }
   if (ast_test_flag(&opts, OPT_CALLER_PARK)) {
      ast_set_flag(&(bridge_config.features_caller), AST_FEATURE_PARKCALL);
   }
   if (ast_test_flag(&opts, OPT_NO_RETRY)) {
      if (qe->parent->strategy == QUEUE_STRATEGY_RRMEMORY || qe->parent->strategy == QUEUE_STRATEGY_LINEAR 
         || qe->parent->strategy == QUEUE_STRATEGY_RRORDERED) {
         (*tries)++;
      } else {
         *tries = ao2_container_count(qe->parent->members);
      }
      *noption = 1;
   }
   if (ast_test_flag(&opts, OPT_IGNORE_CALL_FW)) {
      forwardsallowed = 0;
   }
   if (ast_test_flag(&opts, OPT_IGNORE_CONNECTEDLINE)) {
      block_connected_line = 1;
   }
   if (ast_test_flag(&opts, OPT_CALLEE_AUTOMIXMON)) {
      ast_set_flag(&(bridge_config.features_callee), AST_FEATURE_AUTOMIXMON);
   }
   if (ast_test_flag(&opts, OPT_CALLER_AUTOMIXMON)) {
      ast_set_flag(&(bridge_config.features_caller), AST_FEATURE_AUTOMIXMON);
   }
   if (ast_test_flag(&opts, OPT_MARK_AS_ANSWERED)) {
      qe->cancel_answered_elsewhere = 1;
   }

   /* if the calling channel has AST_CAUSE_ANSWERED_ELSEWHERE set, make sure this is inherited.
      (this is mainly to support chan_local)
   */
   if (ast_channel_hangupcause(qe->chan) == AST_CAUSE_ANSWERED_ELSEWHERE) {
      qe->cancel_answered_elsewhere = 1;
   }

   ao2_lock(qe->parent);
   ast_debug(1, "%s is trying to call a queue member.\n",
                     ast_channel_name(qe->chan));
   ast_copy_string(queuename, qe->parent->name, sizeof(queuename));
   if (!ast_strlen_zero(qe->announce)) {
      announce = qe->announce;
   }
   if (!ast_strlen_zero(announceoverride)) {
      announce = announceoverride;
   }

   memi = ao2_iterator_init(qe->parent->members, 0);
   while ((cur = ao2_iterator_next(&memi))) {
      struct callattempt *tmp = ast_calloc(1, sizeof(*tmp));
      struct ast_dialed_interface *di;
      AST_LIST_HEAD(,ast_dialed_interface) *dialed_interfaces;
      if (!tmp) {
         ao2_ref(cur, -1);
         ao2_iterator_destroy(&memi);
         ao2_unlock(qe->parent);
         goto out;
      }
      if (!datastore) {
         if (!(datastore = ast_datastore_alloc(&dialed_interface_info, NULL))) {
            callattempt_free(tmp);
            ao2_ref(cur, -1);
            ao2_iterator_destroy(&memi);
            ao2_unlock(qe->parent);
            goto out;
         }
         datastore->inheritance = DATASTORE_INHERIT_FOREVER;
         if (!(dialed_interfaces = ast_calloc(1, sizeof(*dialed_interfaces)))) {
            callattempt_free(tmp);
            ao2_ref(cur, -1);
            ao2_iterator_destroy(&memi);
            ao2_unlock(qe->parent);
            goto out;
         }
         datastore->data = dialed_interfaces;
         AST_LIST_HEAD_INIT(dialed_interfaces);

         ast_channel_lock(qe->chan);
         ast_channel_datastore_add(qe->chan, datastore);
         ast_channel_unlock(qe->chan);
      } else
         dialed_interfaces = datastore->data;

      AST_LIST_LOCK(dialed_interfaces);
      AST_LIST_TRAVERSE(dialed_interfaces, di, list) {
         if (!strcasecmp(cur->interface, di->interface)) {
            ast_debug(1, "Skipping dialing interface '%s' since it has already been dialed\n", 
               di->interface);
            break;
         }
      }
      AST_LIST_UNLOCK(dialed_interfaces);

      if (di) {
         callattempt_free(tmp);
         ao2_ref(cur, -1);
         continue;
      }

      /* It is always ok to dial a Local interface.  We only keep track of
       * which "real" interfaces have been dialed.  The Local channel will
       * inherit this list so that if it ends up dialing a real interface,
       * it won't call one that has already been called. */
      if (strncasecmp(cur->interface, "Local/", 6)) {
         if (!(di = ast_calloc(1, sizeof(*di) + strlen(cur->interface)))) {
            callattempt_free(tmp);
            ao2_ref(cur, -1);
            ao2_iterator_destroy(&memi);
            ao2_unlock(qe->parent);
            goto out;
         }
         strcpy(di->interface, cur->interface);

         AST_LIST_LOCK(dialed_interfaces);
         AST_LIST_INSERT_TAIL(dialed_interfaces, di, list);
         AST_LIST_UNLOCK(dialed_interfaces);
      }

      /*
       * Seed the callattempt's connected line information with previously
       * acquired connected line info from the queued channel.  The
       * previously acquired connected line info could have been set
       * through the CONNECTED_LINE dialplan function.
       */
      ast_channel_lock(qe->chan);
      ast_party_connected_line_copy(&tmp->connected, ast_channel_connected(qe->chan));
      ast_channel_unlock(qe->chan);

      tmp->block_connected_update = block_connected_line;
      tmp->stillgoing = 1;
      tmp->member = cur;/* Place the reference for cur into callattempt. */
      tmp->lastcall = cur->lastcall;
      tmp->lastqueue = cur->lastqueue;
      ast_copy_string(tmp->interface, cur->interface, sizeof(tmp->interface));
      /* Special case: If we ring everyone, go ahead and ring them, otherwise
         just calculate their metric for the appropriate strategy */
      if (!calc_metric(qe->parent, cur, x++, qe, tmp)) {
         /* Put them in the list of outgoing thingies...  We're ready now.
            XXX If we're forcibly removed, these outgoing calls won't get
            hung up XXX */
         tmp->q_next = outgoing;
         outgoing = tmp;      
         /* If this line is up, don't try anybody else */
         if (outgoing->chan && (ast_channel_state(outgoing->chan) == AST_STATE_UP))
            break;
      } else {
         callattempt_free(tmp);
      }
   }
   ao2_iterator_destroy(&memi);

   if (qe->parent->timeoutpriority == TIMEOUT_PRIORITY_APP) {
      /* Application arguments have higher timeout priority (behaviour for <=1.6) */
      if (qe->expire && (!qe->parent->timeout || (qe->expire - now) <= qe->parent->timeout)) {
         to = (qe->expire - now) * 1000;
      } else {
         to = (qe->parent->timeout) ? qe->parent->timeout * 1000 : -1;
      }
   } else {
      /* Config timeout is higher priority thatn application timeout */
      if (qe->expire && qe->expire<=now) {
         to = 0;
      } else if (qe->parent->timeout) {
         to = qe->parent->timeout * 1000;
      } else {
         to = -1;
      }
   }
   orig = to;
   ++qe->pending;
   ao2_unlock(qe->parent);
   ring_one(qe, outgoing, &numbusies);
   lpeer = wait_for_answer(qe, outgoing, &to, &digit, numbusies,
      ast_test_flag(&(bridge_config.features_caller), AST_FEATURE_DISCONNECT),
      forwardsallowed);
   /* The ast_channel_datastore_remove() function could fail here if the
    * datastore was moved to another channel during a masquerade. If this is
    * the case, don't free the datastore here because later, when the channel
    * to which the datastore was moved hangs up, it will attempt to free this
    * datastore again, causing a crash
    */
   ast_channel_lock(qe->chan);
   if (datastore && !ast_channel_datastore_remove(qe->chan, datastore)) {
      ast_datastore_free(datastore);
   }
   ast_channel_unlock(qe->chan);
   ao2_lock(qe->parent);
   if (qe->parent->strategy == QUEUE_STRATEGY_RRMEMORY || qe->parent->strategy == QUEUE_STRATEGY_RRORDERED) {
      store_next_rr(qe, outgoing);

   }
   if (qe->parent->strategy == QUEUE_STRATEGY_LINEAR) {
      store_next_lin(qe, outgoing);
   }
   ao2_unlock(qe->parent);
   peer = lpeer ? lpeer->chan : NULL;
   if (!peer) {
      qe->pending = 0;
      if (to) {
         /* Must gotten hung up */
         res = -1;
      } else {
         /* User exited by pressing a digit */
         res = digit;
      }
      if (res == -1) {
         ast_debug(1, "%s: Nobody answered.\n", ast_channel_name(qe->chan));
      }
      if (ast_cdr_isset_unanswered()) {
         /* channel contains the name of one of the outgoing channels
            in its CDR; zero out this CDR to avoid a dual-posting */
         struct callattempt *o;
         for (o = outgoing; o; o = o->q_next) {
            if (!o->chan) {
               continue;
            }
            if (strcmp(ast_channel_cdr(o->chan)->dstchannel, ast_channel_cdr(qe->chan)->dstchannel) == 0) {
               ast_set_flag(ast_channel_cdr(o->chan), AST_CDR_FLAG_POST_DISABLED);
               break;
            }
         }
      }
   } else { /* peer is valid */
      /* These variables are used with the F option without arguments (callee jumps to next priority after queue) */
      char *caller_context;
      char *caller_extension;
      int caller_priority;

      /* Ah ha!  Someone answered within the desired timeframe.  Of course after this
         we will always return with -1 so that it is hung up properly after the
         conversation.  */
      if (!strcmp(ast_channel_tech(qe->chan)->type, "DAHDI")) {
         ast_channel_setoption(qe->chan, AST_OPTION_TONE_VERIFY, &nondataquality, sizeof(nondataquality), 0);
      }
      if (!strcmp(ast_channel_tech(peer)->type, "DAHDI")) {
         ast_channel_setoption(peer, AST_OPTION_TONE_VERIFY, &nondataquality, sizeof(nondataquality), 0);
      }
      /* Update parameters for the queue */
      time(&now);
      recalc_holdtime(qe, (now - qe->start));
      ao2_lock(qe->parent);
      callcompletedinsl = ((now - qe->start) <= qe->parent->servicelevel);
      ao2_unlock(qe->parent);
      member = lpeer->member;
      /* Increment the refcount for this member, since we're going to be using it for awhile in here. */
      ao2_ref(member, 1);
      hangupcalls(outgoing, peer, qe->cancel_answered_elsewhere);
      outgoing = NULL;
      if (announce || qe->parent->reportholdtime || qe->parent->memberdelay) {
         int res2;

         res2 = ast_autoservice_start(qe->chan);
         if (!res2) {
            if (qe->parent->memberdelay) {
               ast_log(LOG_NOTICE, "Delaying member connect for %d seconds\n", qe->parent->memberdelay);
               res2 = ast_safe_sleep(peer, qe->parent->memberdelay * 1000);
            }
            if (!res2 && announce) {
               if (play_file(peer, announce) < 0) {
                  ast_log(LOG_ERROR, "play_file failed for '%s' on %s\n", announce, ast_channel_name(peer));
               }
            }
            if (!res2 && qe->parent->reportholdtime) {
               if (!play_file(peer, qe->parent->sound_reporthold)) {
                  int holdtime, holdtimesecs;

                  time(&now);
                  holdtime = abs((now - qe->start) / 60);
                  holdtimesecs = abs((now - qe->start) % 60);
                  if (holdtime > 0) {
                     ast_say_number(peer, holdtime, AST_DIGIT_ANY, ast_channel_language(peer), NULL);
                     if (play_file(peer, qe->parent->sound_minutes) < 0) {
                        ast_log(LOG_ERROR, "play_file failed for '%s' on %s\n", qe->parent->sound_minutes, ast_channel_name(peer));
                     }
                  }
                  if (holdtimesecs > 1) {
                     ast_say_number(peer, holdtimesecs, AST_DIGIT_ANY, ast_channel_language(peer), NULL);
                     if (play_file(peer, qe->parent->sound_seconds) < 0) {
                        ast_log(LOG_ERROR, "play_file failed for '%s' on %s\n", qe->parent->sound_seconds, ast_channel_name(peer));
                     }
                  }
               }
            }
            ast_autoservice_stop(qe->chan);
         }
         if (ast_check_hangup(peer)) {
            /* Agent must have hung up */
            ast_log(LOG_WARNING, "Agent on %s hungup on the customer.\n", ast_channel_name(peer));
            ast_queue_log(queuename, ast_channel_uniqueid(qe->chan), member->membername, "AGENTDUMP", "%s", "");
            if (qe->parent->eventwhencalled)
               /*** DOCUMENTATION
               <managerEventInstance>
                  <synopsis>Raised when an agent hangs up on a member in the queue.</synopsis>
                  <syntax>
                     <xi:include xpointer="xpointer(/docs/managerEvent[@name='QueueMemberStatus']/managerEventInstance/syntax/parameter[@name='Queue'])" />
                     <xi:include xpointer="xpointer(/docs/managerEvent[@name='AgentRingNoAnswer']/managerEventInstance/syntax/parameter[@name='Member'])" />
                     <xi:include xpointer="xpointer(/docs/managerEvent[@name='QueueMemberStatus']/managerEventInstance/syntax/parameter[@name='MemberName'])" />
                     <xi:include xpointer="xpointer(/docs/managerEvent[@name='AgentCalled']/managerEventInstance/syntax/parameter[@name='Variable'])" />
                  </syntax>
                  <see-also>
                     <ref type="managerEvent">AgentCalled</ref>
                     <ref type="managerEvent">AgentConnect</ref>
                  </see-also>
               </managerEventInstance>
               ***/
               manager_event(EVENT_FLAG_AGENT, "AgentDump",
                     "Queue: %s\r\n"
                     "Uniqueid: %s\r\n"
                     "Channel: %s\r\n"
                     "Member: %s\r\n"
                     "MemberName: %s\r\n"
                     "%s",
                     queuename, ast_channel_uniqueid(qe->chan), ast_channel_name(peer), member->interface, member->membername,
                     qe->parent->eventwhencalled == QUEUE_EVENT_VARIABLES ? vars2manager(qe->chan, vars, sizeof(vars)) : "");
            ast_autoservice_chan_hangup_peer(qe->chan, peer);
            ao2_ref(member, -1);
            goto out;
         } else if (ast_check_hangup(qe->chan)) {
            /* Caller must have hung up just before being connected */
            ast_log(LOG_NOTICE, "Caller was about to talk to agent on %s but the caller hungup.\n", ast_channel_name(peer));
            ast_queue_log(queuename, ast_channel_uniqueid(qe->chan), member->membername, "ABANDON", "%d|%d|%ld", qe->pos, qe->opos, (long) time(NULL) - qe->start);
            record_abandoned(qe);
            ast_autoservice_chan_hangup_peer(qe->chan, peer);
            ao2_ref(member, -1);
            return -1;
         }
      }
      /* Stop music on hold */
      if (ringing) {
         ast_indicate(qe->chan,-1);
      } else {
         ast_moh_stop(qe->chan);
      }
      /* If appropriate, log that we have a destination channel */
      if (ast_channel_cdr(qe->chan)) {
         ast_cdr_setdestchan(ast_channel_cdr(qe->chan), ast_channel_name(peer));
      }
      /* Make sure channels are compatible */
      res = ast_channel_make_compatible(qe->chan, peer);
      if (res < 0) {
         ast_queue_log(queuename, ast_channel_uniqueid(qe->chan), member->membername, "SYSCOMPAT", "%s", "");
         ast_log(LOG_WARNING, "Had to drop call because I couldn't make %s compatible with %s\n", ast_channel_name(qe->chan), ast_channel_name(peer));
         record_abandoned(qe);
         ast_cdr_failed(ast_channel_cdr(qe->chan));
         ast_autoservice_chan_hangup_peer(qe->chan, peer);
         ao2_ref(member, -1);
         return -1;
      }

      /* Play announcement to the caller telling it's his turn if defined */
      if (!ast_strlen_zero(qe->parent->sound_callerannounce)) {
         if (play_file(qe->chan, qe->parent->sound_callerannounce)) {
            ast_log(LOG_WARNING, "Announcement file '%s' is unavailable, continuing anyway...\n", qe->parent->sound_callerannounce);
         }
      }

      ao2_lock(qe->parent);
      /* if setinterfacevar is defined, make member variables available to the channel */
      /* use  pbx_builtin_setvar to set a load of variables with one call */
      if (qe->parent->setinterfacevar) {
         snprintf(interfacevar, sizeof(interfacevar), "MEMBERINTERFACE=%s,MEMBERNAME=%s,MEMBERCALLS=%d,MEMBERLASTCALL=%ld,MEMBERPENALTY=%d,MEMBERDYNAMIC=%d,MEMBERREALTIME=%d",
            member->interface, member->membername, member->calls, (long)member->lastcall, member->penalty, member->dynamic, member->realtime);
         pbx_builtin_setvar_multiple(qe->chan, interfacevar);
         pbx_builtin_setvar_multiple(peer, interfacevar);
      }
      
      /* if setqueueentryvar is defined, make queue entry (i.e. the caller) variables available to the channel */
      /* use  pbx_builtin_setvar to set a load of variables with one call */
      if (qe->parent->setqueueentryvar) {
         snprintf(interfacevar, sizeof(interfacevar), "QEHOLDTIME=%ld,QEORIGINALPOS=%d",
            (long) time(NULL) - qe->start, qe->opos);
         pbx_builtin_setvar_multiple(qe->chan, interfacevar);
         pbx_builtin_setvar_multiple(peer, interfacevar);
      }
   
      ao2_unlock(qe->parent);

      /* try to set queue variables if configured to do so*/
      set_queue_variables(qe->parent, qe->chan);
      set_queue_variables(qe->parent, peer);

      ast_channel_lock(qe->chan);
      /* Copy next destination data for 'F' option (no args) */
      caller_context = ast_strdupa(ast_channel_context(qe->chan));
      caller_extension = ast_strdupa(ast_channel_exten(qe->chan));
      caller_priority = ast_channel_priority(qe->chan);
      if ((monitorfilename = pbx_builtin_getvar_helper(qe->chan, "MONITOR_FILENAME"))) {
            monitorfilename = ast_strdupa(monitorfilename);
      }
      ast_channel_unlock(qe->chan);

      /* Begin Monitoring */
      if (qe->parent->monfmt && *qe->parent->monfmt) {
         if (!qe->parent->montype) {
            const char *monexec;
            ast_debug(1, "Starting Monitor as requested.\n");
            ast_channel_lock(qe->chan);
            if ((monexec = pbx_builtin_getvar_helper(qe->chan, "MONITOR_EXEC")) || pbx_builtin_getvar_helper(qe->chan, "MONITOR_EXEC_ARGS")) {
               which = qe->chan;
               monexec = monexec ? ast_strdupa(monexec) : NULL;
            } else {
               which = peer;
            }
            ast_channel_unlock(qe->chan);
            if (monitorfilename) {
               ast_monitor_start(which, qe->parent->monfmt, monitorfilename, 1, X_REC_IN | X_REC_OUT);
            } else if (ast_channel_cdr(qe->chan)) {
               ast_monitor_start(which, qe->parent->monfmt, ast_channel_cdr(qe->chan)->uniqueid, 1, X_REC_IN | X_REC_OUT);
            } else {
               /* Last ditch effort -- no CDR, make up something */
               snprintf(tmpid, sizeof(tmpid), "chan-%lx", ast_random());
               ast_monitor_start(which, qe->parent->monfmt, tmpid, 1, X_REC_IN | X_REC_OUT);
            }
            if (!ast_strlen_zero(monexec)) {
               ast_monitor_setjoinfiles(which, 1);
            }
         } else {
            mixmonapp = pbx_findapp("MixMonitor");
            
            if (mixmonapp) {
               ast_debug(1, "Starting MixMonitor as requested.\n");
               if (!monitorfilename) {
                  if (ast_channel_cdr(qe->chan)) {
                     ast_copy_string(tmpid, ast_channel_cdr(qe->chan)->uniqueid, sizeof(tmpid));
                  } else {
                     snprintf(tmpid, sizeof(tmpid), "chan-%lx", ast_random());
                  }
               } else {
                  const char *m = monitorfilename;
                  for (p = tmpid2; p < tmpid2 + sizeof(tmpid2) - 1; p++, m++) {
                     switch (*m) {
                     case '^':
                        if (*(m + 1) == '{')
                           *p = '$';
                        break;
                     case ',':
                        *p++ = '\\';
                        /* Fall through */
                     default:
                        *p = *m;
                     }
                     if (*m == '\0')
                        break;
                  }
                  if (p == tmpid2 + sizeof(tmpid2))
                     tmpid2[sizeof(tmpid2) - 1] = '\0';

                  pbx_substitute_variables_helper(qe->chan, tmpid2, tmpid, sizeof(tmpid) - 1);
               }

               ast_channel_lock(qe->chan);
               if ((monitor_exec = pbx_builtin_getvar_helper(qe->chan, "MONITOR_EXEC"))) {
                     monitor_exec = ast_strdupa(monitor_exec);
               }
               if ((monitor_options = pbx_builtin_getvar_helper(qe->chan, "MONITOR_OPTIONS"))) {
                     monitor_options = ast_strdupa(monitor_options);
               } else {
                  monitor_options = "";
               }
               ast_channel_unlock(qe->chan);

               if (monitor_exec) {
                  const char *m = monitor_exec;
                  for (p = meid2; p < meid2 + sizeof(meid2) - 1; p++, m++) {
                     switch (*m) {
                     case '^':
                        if (*(m + 1) == '{')
                           *p = '$';
                        break;
                     case ',':
                        *p++ = '\\';
                        /* Fall through */
                     default:
                        *p = *m;
                     }
                     if (*m == '\0') {
                        break;
                     }
                  }
                  if (p == meid2 + sizeof(meid2)) {
                     meid2[sizeof(meid2) - 1] = '\0';
                  }

                  pbx_substitute_variables_helper(qe->chan, meid2, meid, sizeof(meid) - 1);
               }
   
               snprintf(tmpid2, sizeof(tmpid2), "%s.%s", tmpid, qe->parent->monfmt);

               if (!ast_strlen_zero(monitor_exec)) {
                  snprintf(mixmonargs, sizeof(mixmonargs), "%s,b%s,%s", tmpid2, monitor_options, monitor_exec);
               } else {
                  snprintf(mixmonargs, sizeof(mixmonargs), "%s,b%s", tmpid2, monitor_options);
               }
               
               ast_debug(1, "Arguments being passed to MixMonitor: %s\n", mixmonargs);
               /* We purposely lock the CDR so that pbx_exec does not update the application data */
               if (ast_channel_cdr(qe->chan)) {
                  ast_set_flag(ast_channel_cdr(qe->chan), AST_CDR_FLAG_LOCKED);
               }
               pbx_exec(qe->chan, mixmonapp, mixmonargs);
               if (ast_channel_cdr(qe->chan)) {
                  ast_clear_flag(ast_channel_cdr(qe->chan), AST_CDR_FLAG_LOCKED);
               }
            } else {
               ast_log(LOG_WARNING, "Asked to run MixMonitor on this call, but cannot find the MixMonitor app!\n");
            }
         }
      }
      /* Drop out of the queue at this point, to prepare for next caller */
      leave_queue(qe);        
      if (!ast_strlen_zero(url) && ast_channel_supports_html(peer)) {
         ast_debug(1, "app_queue: sendurl=%s.\n", url);
         ast_channel_sendurl(peer, url);
      }
      
      /* run a macro for this connection if defined. The macro simply returns, no action is taken on the result */
      /* use macro from dialplan if passed as a option, otherwise use the default queue macro */
      if (!ast_strlen_zero(macro)) {
         macroexec = ast_strdupa(macro);
      } else {
         if (qe->parent->membermacro) {
            macroexec = ast_strdupa(qe->parent->membermacro);
         }
      }

      if (!ast_strlen_zero(macroexec)) {
         ast_debug(1, "app_queue: macro=%s.\n", macroexec);
         ast_app_exec_macro(qe->chan, peer, macroexec);
      }

      /* run a gosub for this connection if defined. The gosub simply returns, no action is taken on the result */
      /* use gosub from dialplan if passed as a option, otherwise use the default queue gosub */
      if (!ast_strlen_zero(gosub)) {
         gosubexec = ast_strdupa(gosub);
      } else {
         if (qe->parent->membergosub) {
            gosubexec = ast_strdupa(qe->parent->membergosub);
         }
      }

      if (!ast_strlen_zero(gosubexec)) {
         char *gosub_args = NULL;
         char *gosub_argstart;

         ast_debug(1, "app_queue: gosub=%s.\n", gosubexec);

         gosub_argstart = strchr(gosubexec, ',');
         if (gosub_argstart) {
            const char *what_is_s = "s";
            *gosub_argstart = 0;
            if (!ast_exists_extension(peer, gosubexec, "s", 1, S_COR(ast_channel_caller(peer)->id.number.valid, ast_channel_caller(peer)->id.number.str, NULL)) &&
                ast_exists_extension(peer, gosubexec, "~~s~~", 1, S_COR(ast_channel_caller(peer)->id.number.valid, ast_channel_caller(peer)->id.number.str, NULL))) {
               what_is_s = "~~s~~";
            }
            if (ast_asprintf(&gosub_args, "%s,%s,1(%s)", gosubexec, what_is_s, gosub_argstart + 1) < 0) {
               gosub_args = NULL;
            }
            *gosub_argstart = ',';
         } else {
            const char *what_is_s = "s";
            if (!ast_exists_extension(peer, gosubexec, "s", 1, S_COR(ast_channel_caller(peer)->id.number.valid, ast_channel_caller(peer)->id.number.str, NULL)) &&
                ast_exists_extension(peer, gosubexec, "~~s~~", 1, S_COR(ast_channel_caller(peer)->id.number.valid, ast_channel_caller(peer)->id.number.str, NULL))) {
               what_is_s = "~~s~~";
            }
            if (ast_asprintf(&gosub_args, "%s,%s,1", gosubexec, what_is_s) < 0) {
               gosub_args = NULL;
            }
         }
         if (gosub_args) {
            ast_app_exec_sub(qe->chan, peer, gosub_args, 0);
            ast_free(gosub_args);
         } else {
            ast_log(LOG_ERROR, "Could not Allocate string for Gosub arguments -- Gosub Call Aborted!\n");
         }
      }

      if (!ast_strlen_zero(agi)) {
         ast_debug(1, "app_queue: agi=%s.\n", agi);
         application = pbx_findapp("agi");
         if (application) {
            agiexec = ast_strdupa(agi);
            pbx_exec(qe->chan, application, agiexec);
         } else {
            ast_log(LOG_WARNING, "Asked to execute an AGI on this channel, but could not find application (agi)!\n");
         }
      }
      qe->handled++;
      ast_queue_log(queuename, ast_channel_uniqueid(qe->chan), member->membername, "CONNECT", "%ld|%s|%ld", (long) time(NULL) - qe->start, ast_channel_uniqueid(peer),
                                       (long)(orig - to > 0 ? (orig - to) / 1000 : 0));

      if (ast_channel_cdr(qe->chan)) {
         struct ast_cdr *cdr;
         struct ast_cdr *newcdr;

         /* Only work with the last CDR in the stack*/
         cdr = ast_channel_cdr(qe->chan);
         while (cdr->next) {
            cdr = cdr->next;
         }

         /* If this CDR is not related to us add new one*/
         if ((strcasecmp(cdr->uniqueid, ast_channel_uniqueid(qe->chan))) &&
             (strcasecmp(cdr->linkedid, ast_channel_uniqueid(qe->chan))) &&
             (newcdr = ast_cdr_dup(cdr))) {
            ast_channel_lock(qe->chan);
            ast_cdr_init(newcdr, qe->chan);
            ast_cdr_reset(newcdr, 0);
            cdr = ast_cdr_append(cdr, newcdr);
            cdr = cdr->next;
            ast_channel_unlock(qe->chan);
         }

         if (update_cdr) {
            ast_copy_string(cdr->dstchannel, member->membername, sizeof(cdr->dstchannel));
         }
      }

      if (qe->parent->eventwhencalled)
         /*** DOCUMENTATION
         <managerEventInstance>
            <synopsis>Raised when an agent answers and is bridged to a member in the queue.</synopsis>
            <syntax>
               <xi:include xpointer="xpointer(/docs/managerEvent[@name='QueueMemberStatus']/managerEventInstance/syntax/parameter[@name='Queue'])" />
               <xi:include xpointer="xpointer(/docs/managerEvent[@name='AgentRingNoAnswer']/managerEventInstance/syntax/parameter[@name='Member'])" />
               <xi:include xpointer="xpointer(/docs/managerEvent[@name='QueueMemberStatus']/managerEventInstance/syntax/parameter[@name='MemberName'])" />
               <xi:include xpointer="xpointer(/docs/managerEvent[@name='AgentRingNoAnswer']/managerEventInstance/syntax/parameter[@name='RingTime'])" />
               <xi:include xpointer="xpointer(/docs/managerEvent[@name='QueueCallerAbandon']/managerEventInstance/syntax/parameter[@name='HoldTime'])" />
               <xi:include xpointer="xpointer(/docs/managerEvent[@name='AgentCalled']/managerEventInstance/syntax/parameter[@name='Variable'])" />
            </syntax>
            <see-also>
               <ref type="managerEvent">AgentCalled</ref>
               <ref type="managerEvent">AgentComplete</ref>
               <ref type="managerEvent">AgentDump</ref>
            </see-also>
         </managerEventInstance>
         ***/
         manager_event(EVENT_FLAG_AGENT, "AgentConnect",
               "Queue: %s\r\n"
               "Uniqueid: %s\r\n"
               "Channel: %s\r\n"
               "Member: %s\r\n"
               "MemberName: %s\r\n"
               "HoldTime: %ld\r\n"
               "BridgedChannel: %s\r\n"
               "RingTime: %ld\r\n"
               "%s",
               queuename, ast_channel_uniqueid(qe->chan), ast_channel_name(peer), member->interface, member->membername,
               (long) time(NULL) - qe->start, ast_channel_uniqueid(peer), (long)(orig - to > 0 ? (orig - to) / 1000 : 0),
               qe->parent->eventwhencalled == QUEUE_EVENT_VARIABLES ? vars2manager(qe->chan, vars, sizeof(vars)) : "");
      ast_copy_string(oldcontext, ast_channel_context(qe->chan), sizeof(oldcontext));
      ast_copy_string(oldexten, ast_channel_exten(qe->chan), sizeof(oldexten));
   
      if ((queue_end_bridge = ao2_alloc(sizeof(*queue_end_bridge), NULL))) {
         queue_end_bridge->q = qe->parent;
         queue_end_bridge->chan = qe->chan;
         bridge_config.end_bridge_callback = end_bridge_callback;
         bridge_config.end_bridge_callback_data = queue_end_bridge;
         bridge_config.end_bridge_callback_data_fixup = end_bridge_callback_data_fixup;
         /* Since queue_end_bridge can survive beyond the life of this call to Queue, we need
          * to make sure to increase the refcount of this queue so it cannot be freed until we
          * are done with it. We remove this reference in end_bridge_callback.
          */
         queue_t_ref(qe->parent, "For bridge_config reference");
      }

      time(&callstart);
      transfer_ds = setup_transfer_datastore(qe, member, callstart, callcompletedinsl);
      bridge = ast_bridge_call(qe->chan,peer, &bridge_config);

      /* If the queue member did an attended transfer, then the TRANSFER already was logged in the queue_log
       * when the masquerade occurred. These other "ending" queue_log messages are unnecessary, except for
       * the AgentComplete manager event
       */
      ast_channel_lock(qe->chan);
      if (!attended_transfer_occurred(qe->chan)) {
         struct ast_datastore *tds;

         /* detect a blind transfer */
         if (!(ast_channel_softhangup_internal_flag(qe->chan) | ast_channel_softhangup_internal_flag(peer)) && (strcasecmp(oldcontext, ast_channel_context(qe->chan)) || strcasecmp(oldexten, ast_channel_exten(qe->chan)))) {
            ast_queue_log(queuename, ast_channel_uniqueid(qe->chan), member->membername, "TRANSFER", "%s|%s|%ld|%ld|%d",
               ast_channel_exten(qe->chan), ast_channel_context(qe->chan), (long) (callstart - qe->start),
               (long) (time(NULL) - callstart), qe->opos);
            send_agent_complete(qe, queuename, peer, member, callstart, vars, sizeof(vars), TRANSFER);
         } else if (ast_check_hangup(qe->chan)) {
            ast_queue_log(queuename, ast_channel_uniqueid(qe->chan), member->membername, "COMPLETECALLER", "%ld|%ld|%d",
               (long) (callstart - qe->start), (long) (time(NULL) - callstart), qe->opos);
            send_agent_complete(qe, queuename, peer, member, callstart, vars, sizeof(vars), CALLER);
         } else {
            ast_queue_log(queuename, ast_channel_uniqueid(qe->chan), member->membername, "COMPLETEAGENT", "%ld|%ld|%d",
               (long) (callstart - qe->start), (long) (time(NULL) - callstart), qe->opos);
            send_agent_complete(qe, queuename, peer, member, callstart, vars, sizeof(vars), AGENT);
         }
         if ((tds = ast_channel_datastore_find(qe->chan, &queue_transfer_info, NULL))) {  
            ast_channel_datastore_remove(qe->chan, tds);
         }
         ast_channel_unlock(qe->chan);
         update_queue(qe->parent, member, callcompletedinsl, (time(NULL) - callstart));
      } else {
         ast_channel_unlock(qe->chan);

         /* We already logged the TRANSFER on the queue_log, but we still need to send the AgentComplete event */
         send_agent_complete(qe, queuename, peer, member, callstart, vars, sizeof(vars), TRANSFER);
      }

      if (transfer_ds) {
         ast_datastore_free(transfer_ds);
      }

      if (!ast_check_hangup(peer) && ast_test_flag(&opts, OPT_CALLEE_GO_ON)) {
         int goto_res;

         if (!ast_strlen_zero(opt_args[OPT_ARG_CALLEE_GO_ON])) {
            ast_replace_subargument_delimiter(opt_args[OPT_ARG_CALLEE_GO_ON]);
            goto_res = ast_parseable_goto(peer, opt_args[OPT_ARG_CALLEE_GO_ON]);
         } else { /* F() */
            goto_res = ast_goto_if_exists(peer, caller_context, caller_extension,
               caller_priority + 1);
         }
         if (goto_res || ast_pbx_start(peer)) {
            ast_autoservice_chan_hangup_peer(qe->chan, peer);
         }
      } else {
         ast_autoservice_chan_hangup_peer(qe->chan, peer);
      }

      res = bridge ? bridge : 1;
      ao2_ref(member, -1);
   }
out:
   hangupcalls(outgoing, NULL, qe->cancel_answered_elsewhere);

   return res;
}

static int wait_a_bit(struct queue_ent *qe)
{
   /* Don't need to hold the lock while we setup the outgoing calls */
   int retrywait = qe->parent->retry * 1000;

   int res = ast_waitfordigit(qe->chan, retrywait);
   if (res > 0 && !valid_exit(qe, res)) {
      res = 0;
   }

   return res;
}

static struct member *interface_exists(struct call_queue *q, const char *interface)
{
   struct member *mem;
   struct ao2_iterator mem_iter;

   if (!q) {
      return NULL;
   }
   mem_iter = ao2_iterator_init(q->members, 0);
   while ((mem = ao2_iterator_next(&mem_iter))) {
      if (!strcasecmp(interface, mem->interface)) {
         ao2_iterator_destroy(&mem_iter);
         return mem;
      }
      ao2_ref(mem, -1);
   }
   ao2_iterator_destroy(&mem_iter);

   return NULL;
}


/*! \brief Dump all members in a specific queue to the database
 * \code
 * <pm_family>/<queuename> = <interface>;<penalty>;<paused>;<state_interface>[|...]
 * \endcode
 */
static void dump_queue_members(struct call_queue *pm_queue)
{
   struct member *cur_member;
   struct ast_str *value;
   struct ao2_iterator mem_iter;

   if (!pm_queue) {
      return;
   }

   /* 4K is a reasonable default for most applications, but we grow to
    * accommodate more if necessary. */
   if (!(value = ast_str_create(4096))) {
      return;
   }

   mem_iter = ao2_iterator_init(pm_queue->members, 0);
   while ((cur_member = ao2_iterator_next(&mem_iter))) {
      if (!cur_member->dynamic) {
         ao2_ref(cur_member, -1);
         continue;
      }

      ast_str_append(&value, 0, "%s%s;%d;%d;%s;%s",
         ast_str_strlen(value) ? "|" : "",
         cur_member->interface,
         cur_member->penalty,
         cur_member->paused,
         cur_member->membername,
         cur_member->state_interface);

      ao2_ref(cur_member, -1);
   }
   ao2_iterator_destroy(&mem_iter);

   if (ast_str_strlen(value) && !cur_member) {
      if (ast_db_put(pm_family, pm_queue->name, ast_str_buffer(value))) {
         ast_log(LOG_WARNING, "failed to create persistent dynamic entry!\n");
      }
   } else {
      /* Delete the entry if the queue is empty or there is an error */
      ast_db_del(pm_family, pm_queue->name);
   }

   ast_free(value);
}

/*! \brief Remove member from queue 
 * \retval RES_NOT_DYNAMIC when they aren't a RT member
 * \retval RES_NOSUCHQUEUE queue does not exist
 * \retval RES_OKAY removed member from queue
 * \retval RES_EXISTS queue exists but no members
*/
static int remove_from_queue(const char *queuename, const char *interface)
{
   struct call_queue *q, tmpq = {
      .name = queuename,
   };
   struct member *mem, tmpmem;
   int res = RES_NOSUCHQUEUE;

   ast_copy_string(tmpmem.interface, interface, sizeof(tmpmem.interface));
   if ((q = ao2_t_find(queues, &tmpq, OBJ_POINTER, "Temporary reference for interface removal"))) {
      ao2_lock(q);
      if ((mem = ao2_find(q->members, &tmpmem, OBJ_POINTER))) {
         /* XXX future changes should beware of this assumption!! */
         /*Change Penalty on realtime users*/
         if (mem->realtime && !ast_strlen_zero(mem->rt_uniqueid) && negative_penalty_invalid) {
            update_realtime_member_field(mem, q->name, "penalty", "-1");
         } else if (!mem->dynamic) {
            ao2_ref(mem, -1);
            ao2_unlock(q);
            queue_t_unref(q, "Interface wasn't dynamic, expiring temporary reference");
            return RES_NOT_DYNAMIC;
         }
         /*** DOCUMENTATION
         <managerEventInstance>
            <synopsis>Raised when a member is removed from the queue.</synopsis>
            <syntax>
               <xi:include xpointer="xpointer(/docs/managerEvent[@name='QueueMemberStatus']/managerEventInstance/syntax/parameter[@name='Queue'])" />
               <xi:include xpointer="xpointer(/docs/managerEvent[@name='QueueMemberStatus']/managerEventInstance/syntax/parameter[@name='Location'])" />
               <xi:include xpointer="xpointer(/docs/managerEvent[@name='QueueMemberStatus']/managerEventInstance/syntax/parameter[@name='MemberName'])" />
            </syntax>
            <see-also>
               <ref type="managerEvent">QueueMemberAdded</ref>
               <ref type="application">RemoveQueueMember</ref>
            </see-also>
         </managerEventInstance>
         ***/
         manager_event(EVENT_FLAG_AGENT, "QueueMemberRemoved",
            "Queue: %s\r\n"
            "Location: %s\r\n"
            "MemberName: %s\r\n",
            q->name, mem->interface, mem->membername);
         ao2_unlink(q->members, mem);
         ao2_ref(mem, -1);

         if (queue_persistent_members) {
            dump_queue_members(q);
         }

         if (!num_available_members(q)) {
            ast_devstate_changed(AST_DEVICE_INUSE, "Queue:%s_avail", q->name);
         }

         res = RES_OKAY;
      } else {
         res = RES_EXISTS;
      }
      ao2_unlock(q);
      queue_t_unref(q, "Expiring temporary reference");
   }

   return res;
}

/*! \brief Add member to queue 
 * \retval RES_NOT_DYNAMIC when they aren't a RT member
 * \retval RES_NOSUCHQUEUE queue does not exist
 * \retval RES_OKAY added member from queue
 * \retval RES_EXISTS queue exists but no members
 * \retval RES_OUT_OF_MEMORY queue exists but not enough memory to create member
*/
static int add_to_queue(const char *queuename, const char *interface, const char *membername, int penalty, int paused, int dump, const char *state_interface)
{
   struct call_queue *q;
   struct member *new_member, *old_member;
   int res = RES_NOSUCHQUEUE;

   /*! \note Ensure the appropriate realtime queue is loaded.  Note that this
    * short-circuits if the queue is already in memory. */
   if (!(q = find_load_queue_rt_friendly(queuename))) {
      return res;
   }

   ao2_lock(q);
   if ((old_member = interface_exists(q, interface)) == NULL) {
      if ((new_member = create_queue_member(interface, membername, penalty, paused, state_interface, q->ringinuse))) {
         new_member->ringinuse = q->ringinuse;
         new_member->dynamic = 1;
         ao2_link(q->members, new_member);
         /*** DOCUMENTATION
         <managerEventInstance>
            <synopsis>Raised when a member is added to the queue.</synopsis>
            <syntax>
               <xi:include xpointer="xpointer(/docs/managerEvent[@name='QueueMemberStatus']/managerEventInstance/syntax/parameter[@name='Queue'])" />
               <xi:include xpointer="xpointer(/docs/managerEvent[@name='QueueMemberStatus']/managerEventInstance/syntax/parameter[@name='Location'])" />
               <xi:include xpointer="xpointer(/docs/managerEvent[@name='QueueMemberStatus']/managerEventInstance/syntax/parameter[@name='MemberName'])" />
               <xi:include xpointer="xpointer(/docs/managerEvent[@name='QueueMemberStatus']/managerEventInstance/syntax/parameter[@name='StateInterface'])" />
               <xi:include xpointer="xpointer(/docs/managerEvent[@name='QueueMemberStatus']/managerEventInstance/syntax/parameter[@name='Membership'])" />
               <xi:include xpointer="xpointer(/docs/managerEvent[@name='QueueMemberStatus']/managerEventInstance/syntax/parameter[@name='Penalty'])" />
               <xi:include xpointer="xpointer(/docs/managerEvent[@name='QueueMemberStatus']/managerEventInstance/syntax/parameter[@name='CallsTaken'])" />
               <xi:include xpointer="xpointer(/docs/managerEvent[@name='QueueMemberStatus']/managerEventInstance/syntax/parameter[@name='LastCall'])" />
               <xi:include xpointer="xpointer(/docs/managerEvent[@name='QueueMemberStatus']/managerEventInstance/syntax/parameter[@name='Status'])" />
               <xi:include xpointer="xpointer(/docs/managerEvent[@name='QueueMemberStatus']/managerEventInstance/syntax/parameter[@name='Paused'])" />
            </syntax>
            <see-also>
               <ref type="managerEvent">QueueMemberRemoved</ref>
               <ref type="application">AddQueueMember</ref>
            </see-also>
         </managerEventInstance>
         ***/
         manager_event(EVENT_FLAG_AGENT, "QueueMemberAdded",
            "Queue: %s\r\n"
            "Location: %s\r\n"
            "MemberName: %s\r\n"
            "StateInterface: %s\r\n"
            "Membership: %s\r\n"
            "Penalty: %d\r\n"
            "CallsTaken: %d\r\n"
            "LastCall: %d\r\n"
            "Status: %d\r\n"
            "Paused: %d\r\n",
            q->name, new_member->interface, new_member->membername, state_interface,
            "dynamic",
            new_member->penalty, new_member->calls, (int) new_member->lastcall,
            new_member->status, new_member->paused);

         if (is_member_available(new_member)) {
            ast_devstate_changed(AST_DEVICE_NOT_INUSE, "Queue:%s_avail", q->name);
         }

         ao2_ref(new_member, -1);
         new_member = NULL;

         if (dump) {
            dump_queue_members(q);
         }

         res = RES_OKAY;
      } else {
         res = RES_OUTOFMEMORY;
      }
   } else {
      ao2_ref(old_member, -1);
      res = RES_EXISTS;
   }
   ao2_unlock(q);
   queue_t_unref(q, "Expiring temporary reference");

   return res;
}

static int set_member_paused(const char *queuename, const char *interface, const char *reason, int paused)
{
   int found = 0;
   struct call_queue *q;
   struct member *mem;
   struct ao2_iterator queue_iter;
   int failed;

   queue_iter = ao2_iterator_init(queues, 0);
   while ((q = ao2_t_iterator_next(&queue_iter, "Iterate over queues"))) {
      ao2_lock(q);
      if (ast_strlen_zero(queuename) || !strcasecmp(q->name, queuename)) {
         if ((mem = interface_exists(q, interface))) {
            if (mem->paused == paused) {
               ast_debug(1, "%spausing already-%spaused queue member %s:%s\n", (paused ? "" : "un"), (paused ? "" : "un"), q->name, interface);
            }

            failed = 0;
            if (mem->realtime) {
               failed = update_realtime_member_field(mem, q->name, "paused", paused ? "1" : "0");
            }

            if (failed) {
               ast_log(LOG_WARNING, "Failed %spausing realtime queue member %s:%s\n", (paused ? "" : "un"), q->name, interface);
               ao2_ref(mem, -1);
               ao2_unlock(q);
               queue_t_unref(q, "Done with iterator");
               continue;
            }
            found++;

            /* Before we do the PAUSE/UNPAUSE log, if this was a PAUSEALL/UNPAUSEALL, log that here, but only on the first found entry. */
            if (found == 1) {

               /* XXX In all other cases, we use the membername, but since this affects all queues, we cannot */
               if (ast_strlen_zero(queuename)) {
                  ast_queue_log("NONE", "NONE", interface, (paused ? "PAUSEALL" : "UNPAUSEALL"), "%s", "");
               }
            }

            mem->paused = paused;

            if (queue_persistent_members) {
               dump_queue_members(q);
            }

            if (is_member_available(mem)) {
               ast_devstate_changed(AST_DEVICE_NOT_INUSE, "Queue:%s_avail", q->name);
            } else if (!num_available_members(q)) {
               ast_devstate_changed(AST_DEVICE_INUSE, "Queue:%s_avail", q->name);
            }

            ast_queue_log(q->name, "NONE", mem->membername, (paused ? "PAUSE" : "UNPAUSE"), "%s", S_OR(reason, ""));

            /*** DOCUMENTATION
            <managerEventInstance>
               <synopsis>Raised when a member is paused/unpaused in the queue with a reason.</synopsis>
               <syntax>
                  <xi:include xpointer="xpointer(/docs/managerEvent[@name='QueueMemberStatus']/managerEventInstance/syntax/parameter[@name='Queue'])" />
                  <xi:include xpointer="xpointer(/docs/managerEvent[@name='QueueMemberStatus']/managerEventInstance/syntax/parameter[@name='Location'])" />
                  <xi:include xpointer="xpointer(/docs/managerEvent[@name='QueueMemberStatus']/managerEventInstance/syntax/parameter[@name='MemberName'])" />
                  <xi:include xpointer="xpointer(/docs/managerEvent[@name='QueueMemberStatus']/managerEventInstance/syntax/parameter[@name='Paused'])" />
               </syntax>
               <see-also>
                  <ref type="application">PauseQueueMember</ref>
                  <ref type="application">UnPauseQueueMember</ref>
               </see-also>
            </managerEventInstance>
            ***/
            if (!ast_strlen_zero(reason)) {
               manager_event(EVENT_FLAG_AGENT, "QueueMemberPaused",
                  "Queue: %s\r\n"
                  "Location: %s\r\n"
                  "MemberName: %s\r\n"
                  "Paused: %d\r\n"
                  "Reason: %s\r\n",
                     q->name, mem->interface, mem->membername, paused, reason);
            } else {
               /*** DOCUMENTATION
               <managerEventInstance>
                  <synopsis>Raised when a member is paused/unpaused in the queue without a reason.</synopsis>
                  <syntax>
                     <xi:include xpointer="xpointer(/docs/managerEvent[@name='QueueMemberStatus']/managerEventInstance/syntax/parameter[@name='Queue'])" />
                     <xi:include xpointer="xpointer(/docs/managerEvent[@name='QueueMemberStatus']/managerEventInstance/syntax/parameter[@name='Location'])" />
                     <xi:include xpointer="xpointer(/docs/managerEvent[@name='QueueMemberStatus']/managerEventInstance/syntax/parameter[@name='MemberName'])" />
                     <xi:include xpointer="xpointer(/docs/managerEvent[@name='QueueMemberStatus']/managerEventInstance/syntax/parameter[@name='Paused'])" />
                  </syntax>
                  <see-also>
                     <ref type="application">PauseQueueMember</ref>
                     <ref type="application">UnPauseQueueMember</ref>
                  </see-also>
               </managerEventInstance>
               ***/
               manager_event(EVENT_FLAG_AGENT, "QueueMemberPaused",
                  "Queue: %s\r\n"
                  "Location: %s\r\n"
                  "MemberName: %s\r\n"
                  "Paused: %d\r\n",
                     q->name, mem->interface, mem->membername, paused);
            }
            ao2_ref(mem, -1);
         }
      }

      if (!ast_strlen_zero(queuename) && !strcasecmp(queuename, q->name)) {
         ao2_unlock(q);
         queue_t_unref(q, "Done with iterator");
         break;
      }

      ao2_unlock(q);
      queue_t_unref(q, "Done with iterator");
   }
   ao2_iterator_destroy(&queue_iter);

   return found ? RESULT_SUCCESS : RESULT_FAILURE;
}

/*!
 * \internal
 * \brief helper function for set_member_penalty - given a queue, sets all member penalties with the interface
 * \param[in] q queue which is having its member's penalty changed - must be unlocked prior to calling
 * \param[in] interface String of interface used to search for queue members being changed
 * \param[in] penalty Value penalty is being changed to for the member.
 * \retval 0 if the there is no member with interface belonging to q and no change is made
 * \retval 1 if the there is a member with interface belonging to q and changes are made
 */
static int set_member_penalty_help_members(struct call_queue *q, const char *interface, int penalty)
{
   struct member *mem;
   int foundinterface = 0;
   char rtpenalty[80];

   ao2_lock(q);
   if ((mem = interface_exists(q, interface))) {
      foundinterface++;
      if (!mem->realtime) {
         mem->penalty = penalty;
      } else {
         sprintf(rtpenalty, "%i", penalty);
         update_realtime_member_field(mem, q->name, "penalty", rtpenalty);
      }
      ast_queue_log(q->name, "NONE", interface, "PENALTY", "%d", penalty);
      /*** DOCUMENTATION
      <managerEventInstance>
         <synopsis>Raised when a member's penalty is changed.</synopsis>
         <syntax>
            <xi:include xpointer="xpointer(/docs/managerEvent[@name='QueueMemberStatus']/managerEventInstance/syntax/parameter[@name='Queue'])" />
            <xi:include xpointer="xpointer(/docs/managerEvent[@name='QueueMemberStatus']/managerEventInstance/syntax/parameter[@name='Location'])" />
            <xi:include xpointer="xpointer(/docs/managerEvent[@name='QueueMemberStatus']/managerEventInstance/syntax/parameter[@name='Penalty'])" />
         </syntax>
         <see-also>
            <ref type="function">QUEUE_MEMBER</ref>
         </see-also>
      </managerEventInstance>
      ***/
      manager_event(EVENT_FLAG_AGENT, "QueueMemberPenalty",
         "Queue: %s\r\n"
         "Location: %s\r\n"
         "Penalty: %d\r\n",
         q->name, mem->interface, penalty);
      ao2_ref(mem, -1);
   }
   ao2_unlock(q);

   return foundinterface;
}

static int set_member_ringinuse_help_members(struct call_queue *q, const char *interface, int ringinuse)
{
   struct member *mem;
   int foundinterface = 0;
   char rtringinuse[80];

   ao2_lock(q);
   if ((mem = interface_exists(q, interface))) {
      foundinterface++;
      if (!mem->realtime) {
         mem->ringinuse = ringinuse;
      } else {
         sprintf(rtringinuse, "%i", ringinuse);
         update_realtime_member_field(mem, q->name, realtime_ringinuse_field, rtringinuse);
      }
      ast_queue_log(q->name, "NONE", interface, "RINGINUSE", "%d", ringinuse);
      /*** DOCUMENTATION
      <managerEventInstance>
         <synopsis>Raised when a member's ringinuse setting is changed.</synopsis>
         <syntax>
            <xi:include xpointer="xpointer(/docs/managerEvent[@name='QueueMemberStatus']/managerEventInstance/syntax/parameter[@name='Queue'])" />
            <xi:include xpointer="xpointer(/docs/managerEvent[@name='QueueMemberStatus']/managerEventInstance/syntax/parameter[@name='Location'])" />
            <parameter name="Ringinuse">
               <enumlist>
                  <enum name="0"/>
                  <enum name="1"/>
               </enumlist>
            </parameter>
         </syntax>
         <see-also>
            <ref type="function">QUEUE_MEMBER</ref>
         </see-also>
      </managerEventInstance>
      ***/
      manager_event(EVENT_FLAG_AGENT, "QueueMemberRinginuse",
         "Queue: %s\r\n"
         "Location: %s\r\n"
         "Ringinuse: %d\r\n",
         q->name, mem->interface, ringinuse);
      ao2_ref(mem, -1);
   }
   ao2_unlock(q);

   return foundinterface;
}

static int set_member_value_help_members(struct call_queue *q, const char *interface, int property, int value)
{
   switch(property) {
   case MEMBER_PENALTY:
      return set_member_penalty_help_members(q, interface, value);

   case MEMBER_RINGINUSE:
      return set_member_ringinuse_help_members(q, interface, value);

   default:
      ast_log(LOG_ERROR, "Attempted to set invalid property\n");
      return 0;
   }
}

/*!
 * \internal
 * \brief Sets members penalty, if queuename=NULL we set member penalty in all the queues.
 * \param[in] queuename If specified, only act on a member if it belongs to this queue
 * \param[in] interface Interface of queue member(s) having priority set.
 * \param[in] property Which queue property is being set
 * \param[in] penalty Value penalty is being changed to for each member
 */
static int set_member_value(const char *queuename, const char *interface, int property, int value)
{
   int foundinterface = 0, foundqueue = 0;
   struct call_queue *q;
   struct ast_config *queue_config = NULL;
   struct ao2_iterator queue_iter;

   /* property dependent restrictions on values should be checked in this switch */
   switch (property) {
   case MEMBER_PENALTY:
      if (value < 0 && !negative_penalty_invalid) {
         ast_log(LOG_ERROR, "Invalid penalty (%d)\n", value);
         return RESULT_FAILURE;
      }
   }

   if (ast_strlen_zero(queuename)) { /* This means we need to iterate through all the queues. */
      if (ast_check_realtime("queues")) {
         char *name;
         queue_config = ast_load_realtime_multientry("queues", "name LIKE", "%", SENTINEL);
         if (queue_config) {
            for (name = ast_category_browse(queue_config, NULL);
                !ast_strlen_zero(name);
                name = ast_category_browse(queue_config, name)) {
               if ((q = find_load_queue_rt_friendly(name))) {
                  foundqueue++;
                  foundinterface += set_member_value_help_members(q, interface, property, value);
               }
            }
         }
      }

      /* After hitting realtime queues, go back and get the regular ones. */
      queue_iter = ao2_iterator_init(queues, 0);
      while ((q = ao2_t_iterator_next(&queue_iter, "Iterate through queues"))) {
         foundqueue++;
         foundinterface += set_member_value_help_members(q, interface, property, value);
      }
      ao2_iterator_destroy(&queue_iter);
   } else { /* We actually have a queuename, so we can just act on the single queue. */
      if ((q = find_load_queue_rt_friendly(queuename))) {
         foundqueue++;
         foundinterface += set_member_value_help_members(q, interface, property, value);
      }
   }

   if (foundinterface) {
      return RESULT_SUCCESS;
   } else if (!foundqueue) {
      ast_log (LOG_ERROR, "Invalid queuename\n");
   } else {
      ast_log (LOG_ERROR, "Invalid interface\n");
   }

   return RESULT_FAILURE;
}

/* \brief Gets members penalty.
 * \return Return the members penalty or RESULT_FAILURE on error.
*/
static int get_member_penalty(char *queuename, char *interface)
{
   int foundqueue = 0, penalty;
   struct call_queue *q, tmpq = {
      .name = queuename,
   };
   struct member *mem;

   if ((q = ao2_t_find(queues, &tmpq, OBJ_POINTER, "Search for queue"))) {
      foundqueue = 1;
      ao2_lock(q);
      if ((mem = interface_exists(q, interface))) {
         penalty = mem->penalty;
         ao2_ref(mem, -1);
         ao2_unlock(q);
         queue_t_unref(q, "Search complete");
         return penalty;
      }
      ao2_unlock(q);
      queue_t_unref(q, "Search complete");
   }

   /* some useful debuging */
   if (foundqueue) {
      ast_log (LOG_ERROR, "Invalid queuename\n");
   } else {
      ast_log (LOG_ERROR, "Invalid interface\n");
   }

   return RESULT_FAILURE;
}

/*! \brief Reload dynamic queue members persisted into the astdb */
static void reload_queue_members(void)
{
   char *cur_ptr;
   const char *queue_name;
   char *member;
   char *interface;
   char *membername = NULL;
   char *state_interface;
   char *penalty_tok;
   int penalty = 0;
   char *paused_tok;
   int paused = 0;
   struct ast_db_entry *db_tree;
   struct ast_db_entry *entry;
   struct call_queue *cur_queue;
   char *queue_data;

   /* Each key in 'pm_family' is the name of a queue */
   db_tree = ast_db_gettree(pm_family, NULL);
   for (entry = db_tree; entry; entry = entry->next) {

      queue_name = entry->key + strlen(pm_family) + 2;

      {
         struct call_queue tmpq = {
            .name = queue_name,
         };
         cur_queue = ao2_t_find(queues, &tmpq, OBJ_POINTER, "Reload queue members");
      }

      if (!cur_queue) {
         cur_queue = find_load_queue_rt_friendly(queue_name);
      }

      if (!cur_queue) {
         /* If the queue no longer exists, remove it from the
          * database */
         ast_log(LOG_WARNING, "Error loading persistent queue: '%s': it does not exist\n", queue_name);
         ast_db_del(pm_family, queue_name);
         continue;
      }

      if (ast_db_get_allocated(pm_family, queue_name, &queue_data)) {
         queue_t_unref(cur_queue, "Expire reload reference");
         continue;
      }

      cur_ptr = queue_data;
      while ((member = strsep(&cur_ptr, ",|"))) {
         if (ast_strlen_zero(member)) {
            continue;
         }

         interface = strsep(&member, ";");
         penalty_tok = strsep(&member, ";");
         paused_tok = strsep(&member, ";");
         membername = strsep(&member, ";");
         state_interface = strsep(&member, ";");

         if (!penalty_tok) {
            ast_log(LOG_WARNING, "Error parsing persistent member string for '%s' (penalty)\n", queue_name);
            break;
         }
         penalty = strtol(penalty_tok, NULL, 10);
         if (errno == ERANGE) {
            ast_log(LOG_WARNING, "Error converting penalty: %s: Out of range.\n", penalty_tok);
            break;
         }
         
         if (!paused_tok) {
            ast_log(LOG_WARNING, "Error parsing persistent member string for '%s' (paused)\n", queue_name);
            break;
         }
         paused = strtol(paused_tok, NULL, 10);
         if ((errno == ERANGE) || paused < 0 || paused > 1) {
            ast_log(LOG_WARNING, "Error converting paused: %s: Expected 0 or 1.\n", paused_tok);
            break;
         }

         ast_debug(1, "Reload Members: Queue: %s  Member: %s  Name: %s  Penalty: %d  Paused: %d\n", queue_name, interface, membername, penalty, paused);
         
         if (add_to_queue(queue_name, interface, membername, penalty, paused, 0, state_interface) == RES_OUTOFMEMORY) {
            ast_log(LOG_ERROR, "Out of Memory when reloading persistent queue member\n");
            break;
         }
      }
      queue_t_unref(cur_queue, "Expire reload reference");
      ast_free(queue_data);
   }

   if (db_tree) {
      ast_log(LOG_NOTICE, "Queue members successfully reloaded from database.\n");
      ast_db_freetree(db_tree);
   }
}

/*! \brief PauseQueueMember application */
static int pqm_exec(struct ast_channel *chan, const char *data)
{
   char *parse;
   AST_DECLARE_APP_ARGS(args,
      AST_APP_ARG(queuename);
      AST_APP_ARG(interface);
      AST_APP_ARG(options);
      AST_APP_ARG(reason);
   );

   if (ast_strlen_zero(data)) {
      ast_log(LOG_WARNING, "PauseQueueMember requires an argument ([queuename],interface[,options][,reason])\n");
      return -1;
   }

   parse = ast_strdupa(data);

   AST_STANDARD_APP_ARGS(args, parse);

   if (ast_strlen_zero(args.interface)) {
      ast_log(LOG_WARNING, "Missing interface argument to PauseQueueMember ([queuename],interface[,options[,reason]])\n");
      return -1;
   }

   if (set_member_paused(args.queuename, args.interface, args.reason, 1)) {
      ast_log(LOG_WARNING, "Attempt to pause interface %s, not found\n", args.interface);
      pbx_builtin_setvar_helper(chan, "PQMSTATUS", "NOTFOUND");
      return 0;
   }

   pbx_builtin_setvar_helper(chan, "PQMSTATUS", "PAUSED");

   return 0;
}

/*! \brief UnPauseQueueMember application */
static int upqm_exec(struct ast_channel *chan, const char *data)
{
   char *parse;
   AST_DECLARE_APP_ARGS(args,
      AST_APP_ARG(queuename);
      AST_APP_ARG(interface);
      AST_APP_ARG(options);
      AST_APP_ARG(reason);
   );

   if (ast_strlen_zero(data)) {
      ast_log(LOG_WARNING, "UnpauseQueueMember requires an argument ([queuename],interface[,options[,reason]])\n");
      return -1;
   }

   parse = ast_strdupa(data);

   AST_STANDARD_APP_ARGS(args, parse);

   if (ast_strlen_zero(args.interface)) {
      ast_log(LOG_WARNING, "Missing interface argument to PauseQueueMember ([queuename],interface[,options[,reason]])\n");
      return -1;
   }

   if (set_member_paused(args.queuename, args.interface, args.reason, 0)) {
      ast_log(LOG_WARNING, "Attempt to unpause interface %s, not found\n", args.interface);
      pbx_builtin_setvar_helper(chan, "UPQMSTATUS", "NOTFOUND");
      return 0;
   }

   pbx_builtin_setvar_helper(chan, "UPQMSTATUS", "UNPAUSED");

   return 0;
}

/*! \brief RemoveQueueMember application */
static int rqm_exec(struct ast_channel *chan, const char *data)
{
   int res=-1;
   char *parse, *temppos = NULL;
   struct member *mem = NULL;

   AST_DECLARE_APP_ARGS(args,
      AST_APP_ARG(queuename);
      AST_APP_ARG(interface);
   );


   if (ast_strlen_zero(data)) {
      ast_log(LOG_WARNING, "RemoveQueueMember requires an argument (queuename[,interface])\n");
      return -1;
   }

   parse = ast_strdupa(data);

   AST_STANDARD_APP_ARGS(args, parse);

   if (ast_strlen_zero(args.interface)) {
      args.interface = ast_strdupa(ast_channel_name(chan));
      temppos = strrchr(args.interface, '-');
      if (temppos) {
         *temppos = '\0';
      }
   }

   ast_debug(1, "queue: %s, member: %s\n", args.queuename, args.interface);

   if (log_membername_as_agent) {
      mem = find_member_by_queuename_and_interface(args.queuename, args.interface);
   }

   switch (remove_from_queue(args.queuename, args.interface)) {
   case RES_OKAY:
      if (!mem || ast_strlen_zero(mem->membername)) {
         ast_queue_log(args.queuename, ast_channel_uniqueid(chan), args.interface, "REMOVEMEMBER", "%s", "");
      } else {
         ast_queue_log(args.queuename, ast_channel_uniqueid(chan), mem->membername, "REMOVEMEMBER", "%s", "");
      }
      ast_log(LOG_NOTICE, "Removed interface '%s' from queue '%s'\n", args.interface, args.queuename);
      pbx_builtin_setvar_helper(chan, "RQMSTATUS", "REMOVED");
      res = 0;
      break;
   case RES_EXISTS:
      ast_debug(1, "Unable to remove interface '%s' from queue '%s': Not there\n", args.interface, args.queuename);
      pbx_builtin_setvar_helper(chan, "RQMSTATUS", "NOTINQUEUE");
      res = 0;
      break;
   case RES_NOSUCHQUEUE:
      ast_log(LOG_WARNING, "Unable to remove interface from queue '%s': No such queue\n", args.queuename);
      pbx_builtin_setvar_helper(chan, "RQMSTATUS", "NOSUCHQUEUE");
      res = 0;
      break;
   case RES_NOT_DYNAMIC:
      ast_log(LOG_WARNING, "Unable to remove interface from queue '%s': '%s' is not a dynamic member\n", args.queuename, args.interface);
      pbx_builtin_setvar_helper(chan, "RQMSTATUS", "NOTDYNAMIC");
      res = 0;
      break;
   }

   if (mem) {
      ao2_ref(mem, -1);
   }

   return res;
}

/*! \brief AddQueueMember application */
static int aqm_exec(struct ast_channel *chan, const char