Thu Oct 11 06:47:06 2012

Asterisk developer's documentation


cdr.c

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00001 /*
00002  * Asterisk -- An open source telephony toolkit.
00003  *
00004  * Copyright (C) 1999 - 2006, Digium, Inc.
00005  *
00006  * Mark Spencer <markster@digium.com>
00007  *
00008  * See http://www.asterisk.org for more information about
00009  * the Asterisk project. Please do not directly contact
00010  * any of the maintainers of this project for assistance;
00011  * the project provides a web site, mailing lists and IRC
00012  * channels for your use.
00013  *
00014  * This program is free software, distributed under the terms of
00015  * the GNU General Public License Version 2. See the LICENSE file
00016  * at the top of the source tree.
00017  */
00018 
00019 /*! \file
00020  *
00021  * \brief Call Detail Record API 
00022  *
00023  * \author Mark Spencer <markster@digium.com>
00024  * 
00025  * \note Includes code and algorithms from the Zapata library.
00026  *
00027  * \note We do a lot of checking here in the CDR code to try to be sure we don't ever let a CDR slip
00028  * through our fingers somehow.  If someone allocates a CDR, it must be completely handled normally
00029  * or a WARNING shall be logged, so that we can best keep track of any escape condition where the CDR
00030  * isn't properly generated and posted.
00031  */
00032 
00033 
00034 #include "asterisk.h"
00035 
00036 ASTERISK_FILE_VERSION(__FILE__, "$Revision: 287115 $")
00037 
00038 #include <signal.h>
00039 
00040 #include "asterisk/lock.h"
00041 #include "asterisk/channel.h"
00042 #include "asterisk/cdr.h"
00043 #include "asterisk/callerid.h"
00044 #include "asterisk/manager.h"
00045 #include "asterisk/causes.h"
00046 #include "asterisk/linkedlists.h"
00047 #include "asterisk/utils.h"
00048 #include "asterisk/sched.h"
00049 #include "asterisk/config.h"
00050 #include "asterisk/cli.h"
00051 #include "asterisk/stringfields.h"
00052 
00053 /*! Default AMA flag for billing records (CDR's) */
00054 int ast_default_amaflags = AST_CDR_DOCUMENTATION;
00055 char ast_default_accountcode[AST_MAX_ACCOUNT_CODE];
00056 
00057 struct ast_cdr_beitem {
00058    char name[20];
00059    char desc[80];
00060    ast_cdrbe be;
00061    AST_RWLIST_ENTRY(ast_cdr_beitem) list;
00062 };
00063 
00064 static AST_RWLIST_HEAD_STATIC(be_list, ast_cdr_beitem);
00065 
00066 struct ast_cdr_batch_item {
00067    struct ast_cdr *cdr;
00068    struct ast_cdr_batch_item *next;
00069 };
00070 
00071 static struct ast_cdr_batch {
00072    int size;
00073    struct ast_cdr_batch_item *head;
00074    struct ast_cdr_batch_item *tail;
00075 } *batch = NULL;
00076 
00077 static struct sched_context *sched;
00078 static int cdr_sched = -1;
00079 static pthread_t cdr_thread = AST_PTHREADT_NULL;
00080 
00081 static int enabled;
00082 static const int ENABLED_DEFAULT = 1;
00083 
00084 static int batchmode;
00085 static const int BATCHMODE_DEFAULT = 0;
00086 
00087 static int unanswered;
00088 static const int UNANSWERED_DEFAULT = 0;
00089 
00090 static int batchsize;
00091 static const int BATCH_SIZE_DEFAULT = 100;
00092 
00093 static int batchtime;
00094 static const int BATCH_TIME_DEFAULT = 300;
00095 
00096 static int batchscheduleronly;
00097 static const int BATCH_SCHEDULER_ONLY_DEFAULT = 0;
00098 
00099 static int batchsafeshutdown;
00100 static const int BATCH_SAFE_SHUTDOWN_DEFAULT = 1;
00101 
00102 AST_MUTEX_DEFINE_STATIC(cdr_batch_lock);
00103 
00104 /* these are used to wake up the CDR thread when there's work to do */
00105 AST_MUTEX_DEFINE_STATIC(cdr_pending_lock);
00106 static ast_cond_t cdr_pending_cond;
00107 
00108 int check_cdr_enabled()
00109 {
00110    return enabled;
00111 }
00112 
00113 /*! Register a CDR driver. Each registered CDR driver generates a CDR 
00114    \return 0 on success, -1 on failure 
00115 */
00116 int ast_cdr_register(const char *name, const char *desc, ast_cdrbe be)
00117 {
00118    struct ast_cdr_beitem *i = NULL;
00119 
00120    if (!name)
00121       return -1;
00122 
00123    if (!be) {
00124       ast_log(LOG_WARNING, "CDR engine '%s' lacks backend\n", name);
00125       return -1;
00126    }
00127 
00128    AST_RWLIST_WRLOCK(&be_list);
00129    AST_RWLIST_TRAVERSE(&be_list, i, list) {
00130       if (!strcasecmp(name, i->name)) {
00131          ast_log(LOG_WARNING, "Already have a CDR backend called '%s'\n", name);
00132          AST_RWLIST_UNLOCK(&be_list);
00133          return -1;
00134       }
00135    }
00136 
00137    if (!(i = ast_calloc(1, sizeof(*i))))  
00138       return -1;
00139 
00140    i->be = be;
00141    ast_copy_string(i->name, name, sizeof(i->name));
00142    ast_copy_string(i->desc, desc, sizeof(i->desc));
00143 
00144    AST_RWLIST_INSERT_HEAD(&be_list, i, list);
00145    AST_RWLIST_UNLOCK(&be_list);
00146 
00147    return 0;
00148 }
00149 
00150 /*! unregister a CDR driver */
00151 void ast_cdr_unregister(const char *name)
00152 {
00153    struct ast_cdr_beitem *i = NULL;
00154 
00155    AST_RWLIST_WRLOCK(&be_list);
00156    AST_RWLIST_TRAVERSE_SAFE_BEGIN(&be_list, i, list) {
00157       if (!strcasecmp(name, i->name)) {
00158          AST_RWLIST_REMOVE_CURRENT(list);
00159          ast_verb(2, "Unregistered '%s' CDR backend\n", name);
00160          ast_free(i);
00161          break;
00162       }
00163    }
00164    AST_RWLIST_TRAVERSE_SAFE_END;
00165    AST_RWLIST_UNLOCK(&be_list);
00166 }
00167 
00168 int ast_cdr_isset_unanswered(void)
00169 {
00170    return unanswered;
00171 }
00172 
00173 /*! Duplicate a CDR record 
00174    \returns Pointer to new CDR record
00175 */
00176 struct ast_cdr *ast_cdr_dup(struct ast_cdr *cdr) 
00177 {
00178    struct ast_cdr *newcdr;
00179    
00180    if (!cdr) /* don't die if we get a null cdr pointer */
00181       return NULL;
00182    newcdr = ast_cdr_alloc();
00183    if (!newcdr)
00184       return NULL;
00185 
00186    memcpy(newcdr, cdr, sizeof(*newcdr));
00187    /* The varshead is unusable, volatile even, after the memcpy so we take care of that here */
00188    memset(&newcdr->varshead, 0, sizeof(newcdr->varshead));
00189    ast_cdr_copy_vars(newcdr, cdr);
00190    newcdr->next = NULL;
00191 
00192    return newcdr;
00193 }
00194 
00195 static const char *ast_cdr_getvar_internal(struct ast_cdr *cdr, const char *name, int recur) 
00196 {
00197    if (ast_strlen_zero(name))
00198       return NULL;
00199 
00200    for (; cdr; cdr = recur ? cdr->next : NULL) {
00201       struct ast_var_t *variables;
00202       struct varshead *headp = &cdr->varshead;
00203       AST_LIST_TRAVERSE(headp, variables, entries) {
00204          if (!strcasecmp(name, ast_var_name(variables)))
00205             return ast_var_value(variables);
00206       }
00207    }
00208 
00209    return NULL;
00210 }
00211 
00212 static void cdr_get_tv(struct timeval when, const char *fmt, char *buf, int bufsize)
00213 {
00214    if (fmt == NULL) {   /* raw mode */
00215       snprintf(buf, bufsize, "%ld.%06ld", (long)when.tv_sec, (long)when.tv_usec);
00216    } else {
00217       if (when.tv_sec) {
00218          struct ast_tm tm;
00219          
00220          ast_localtime(&when, &tm, NULL);
00221          ast_strftime(buf, bufsize, fmt, &tm);
00222       }
00223    }
00224 }
00225 
00226 /*! CDR channel variable retrieval */
00227 void ast_cdr_getvar(struct ast_cdr *cdr, const char *name, char **ret, char *workspace, int workspacelen, int recur, int raw) 
00228 {
00229    const char *fmt = "%Y-%m-%d %T";
00230    const char *varbuf;
00231 
00232    if (!cdr)  /* don't die if the cdr is null */
00233       return;
00234 
00235    *ret = NULL;
00236    /* special vars (the ones from the struct ast_cdr when requested by name) 
00237       I'd almost say we should convert all the stringed vals to vars */
00238 
00239    if (!strcasecmp(name, "clid"))
00240       ast_copy_string(workspace, cdr->clid, workspacelen);
00241    else if (!strcasecmp(name, "src"))
00242       ast_copy_string(workspace, cdr->src, workspacelen);
00243    else if (!strcasecmp(name, "dst"))
00244       ast_copy_string(workspace, cdr->dst, workspacelen);
00245    else if (!strcasecmp(name, "dcontext"))
00246       ast_copy_string(workspace, cdr->dcontext, workspacelen);
00247    else if (!strcasecmp(name, "channel"))
00248       ast_copy_string(workspace, cdr->channel, workspacelen);
00249    else if (!strcasecmp(name, "dstchannel"))
00250       ast_copy_string(workspace, cdr->dstchannel, workspacelen);
00251    else if (!strcasecmp(name, "lastapp"))
00252       ast_copy_string(workspace, cdr->lastapp, workspacelen);
00253    else if (!strcasecmp(name, "lastdata"))
00254       ast_copy_string(workspace, cdr->lastdata, workspacelen);
00255    else if (!strcasecmp(name, "start"))
00256       cdr_get_tv(cdr->start, raw ? NULL : fmt, workspace, workspacelen);
00257    else if (!strcasecmp(name, "answer"))
00258       cdr_get_tv(cdr->answer, raw ? NULL : fmt, workspace, workspacelen);
00259    else if (!strcasecmp(name, "end"))
00260       cdr_get_tv(cdr->end, raw ? NULL : fmt, workspace, workspacelen);
00261    else if (!strcasecmp(name, "duration"))
00262       snprintf(workspace, workspacelen, "%ld", cdr->duration ? cdr->duration : (long)ast_tvdiff_ms(ast_tvnow(), cdr->start) / 1000);
00263    else if (!strcasecmp(name, "billsec"))
00264       snprintf(workspace, workspacelen, "%ld", cdr->billsec || cdr->answer.tv_sec == 0 ? cdr->billsec : (long)ast_tvdiff_ms(ast_tvnow(), cdr->answer) / 1000);
00265    else if (!strcasecmp(name, "disposition")) {
00266       if (raw) {
00267          snprintf(workspace, workspacelen, "%ld", cdr->disposition);
00268       } else {
00269          ast_copy_string(workspace, ast_cdr_disp2str(cdr->disposition), workspacelen);
00270       }
00271    } else if (!strcasecmp(name, "amaflags")) {
00272       if (raw) {
00273          snprintf(workspace, workspacelen, "%ld", cdr->amaflags);
00274       } else {
00275          ast_copy_string(workspace, ast_cdr_flags2str(cdr->amaflags), workspacelen);
00276       }
00277    } else if (!strcasecmp(name, "accountcode"))
00278       ast_copy_string(workspace, cdr->accountcode, workspacelen);
00279    else if (!strcasecmp(name, "uniqueid"))
00280       ast_copy_string(workspace, cdr->uniqueid, workspacelen);
00281    else if (!strcasecmp(name, "userfield"))
00282       ast_copy_string(workspace, cdr->userfield, workspacelen);
00283    else if ((varbuf = ast_cdr_getvar_internal(cdr, name, recur)))
00284       ast_copy_string(workspace, varbuf, workspacelen);
00285    else
00286       workspace[0] = '\0';
00287 
00288    if (!ast_strlen_zero(workspace))
00289       *ret = workspace;
00290 }
00291 
00292 /* readonly cdr variables */
00293 static   const char *cdr_readonly_vars[] = { "clid", "src", "dst", "dcontext", "channel", "dstchannel",
00294                 "lastapp", "lastdata", "start", "answer", "end", "duration",
00295                 "billsec", "disposition", "amaflags", "accountcode", "uniqueid",
00296                 "userfield", NULL };
00297 /*! Set a CDR channel variable 
00298    \note You can't set the CDR variables that belong to the actual CDR record, like "billsec".
00299 */
00300 int ast_cdr_setvar(struct ast_cdr *cdr, const char *name, const char *value, int recur) 
00301 {
00302    struct ast_var_t *newvariable;
00303    struct varshead *headp;
00304    int x;
00305    
00306    if (!cdr)  /* don't die if the cdr is null */
00307       return -1;
00308    
00309    for (x = 0; cdr_readonly_vars[x]; x++) {
00310       if (!strcasecmp(name, cdr_readonly_vars[x])) {
00311          ast_log(LOG_ERROR, "Attempt to set the '%s' read-only variable!.\n", name);
00312          return -1;
00313       }
00314    }
00315 
00316    if (!cdr) {
00317       ast_log(LOG_ERROR, "Attempt to set a variable on a nonexistent CDR record.\n");
00318       return -1;
00319    }
00320 
00321    for (; cdr; cdr = recur ? cdr->next : NULL) {
00322       if (ast_test_flag(cdr, AST_CDR_FLAG_DONT_TOUCH) && ast_test_flag(cdr, AST_CDR_FLAG_LOCKED))
00323          continue;
00324       headp = &cdr->varshead;
00325       AST_LIST_TRAVERSE_SAFE_BEGIN(headp, newvariable, entries) {
00326          if (!strcasecmp(ast_var_name(newvariable), name)) {
00327             /* there is already such a variable, delete it */
00328             AST_LIST_REMOVE_CURRENT(entries);
00329             ast_var_delete(newvariable);
00330             break;
00331          }
00332       }
00333       AST_LIST_TRAVERSE_SAFE_END;
00334       
00335       if (value) {
00336          newvariable = ast_var_assign(name, value);
00337          AST_LIST_INSERT_HEAD(headp, newvariable, entries);
00338       }
00339    }
00340 
00341    return 0;
00342 }
00343 
00344 int ast_cdr_copy_vars(struct ast_cdr *to_cdr, struct ast_cdr *from_cdr)
00345 {
00346    struct ast_var_t *variables, *newvariable = NULL;
00347    struct varshead *headpa, *headpb;
00348    const char *var, *val;
00349    int x = 0;
00350 
00351    if (!to_cdr || !from_cdr) /* don't die if one of the pointers is null */
00352       return 0;
00353 
00354    headpa = &from_cdr->varshead;
00355    headpb = &to_cdr->varshead;
00356 
00357    AST_LIST_TRAVERSE(headpa,variables,entries) {
00358       if (variables &&
00359           (var = ast_var_name(variables)) && (val = ast_var_value(variables)) &&
00360           !ast_strlen_zero(var) && !ast_strlen_zero(val)) {
00361          newvariable = ast_var_assign(var, val);
00362          AST_LIST_INSERT_HEAD(headpb, newvariable, entries);
00363          x++;
00364       }
00365    }
00366 
00367    return x;
00368 }
00369 
00370 int ast_cdr_serialize_variables(struct ast_cdr *cdr, struct ast_str **buf, char delim, char sep, int recur) 
00371 {
00372    struct ast_var_t *variables;
00373    const char *var;
00374    char *tmp;
00375    char workspace[256];
00376    int total = 0, x = 0, i;
00377 
00378    ast_str_reset(*buf);
00379 
00380    for (; cdr; cdr = recur ? cdr->next : NULL) {
00381       if (++x > 1)
00382          ast_str_append(buf, 0, "\n");
00383 
00384       AST_LIST_TRAVERSE(&cdr->varshead, variables, entries) {
00385          if (!(var = ast_var_name(variables))) {
00386             continue;
00387          }
00388 
00389          if (ast_str_append(buf, 0, "level %d: %s%c%s%c", x, var, delim, S_OR(ast_var_value(variables), ""), sep) < 0) {
00390             ast_log(LOG_ERROR, "Data Buffer Size Exceeded!\n");
00391             break;
00392          }
00393 
00394          total++;
00395       }
00396 
00397       for (i = 0; cdr_readonly_vars[i]; i++) {
00398          workspace[0] = 0; /* null out the workspace, because the cdr_get_tv() won't write anything if time is NULL, so you get old vals */
00399          ast_cdr_getvar(cdr, cdr_readonly_vars[i], &tmp, workspace, sizeof(workspace), 0, 0);
00400          if (!tmp)
00401             continue;
00402          
00403          if (ast_str_append(buf, 0, "level %d: %s%c%s%c", x, cdr_readonly_vars[i], delim, tmp, sep) < 0) {
00404             ast_log(LOG_ERROR, "Data Buffer Size Exceeded!\n");
00405             break;
00406          } else
00407             total++;
00408       }
00409    }
00410 
00411    return total;
00412 }
00413 
00414 
00415 void ast_cdr_free_vars(struct ast_cdr *cdr, int recur)
00416 {
00417 
00418    /* clear variables */
00419    for (; cdr; cdr = recur ? cdr->next : NULL) {
00420       struct ast_var_t *vardata;
00421       struct varshead *headp = &cdr->varshead;
00422       while ((vardata = AST_LIST_REMOVE_HEAD(headp, entries)))
00423          ast_var_delete(vardata);
00424    }
00425 }
00426 
00427 /*! \brief  print a warning if cdr already posted */
00428 static void check_post(struct ast_cdr *cdr)
00429 {
00430    if (!cdr)
00431       return;
00432    if (ast_test_flag(cdr, AST_CDR_FLAG_POSTED))
00433       ast_log(LOG_NOTICE, "CDR on channel '%s' already posted\n", S_OR(cdr->channel, "<unknown>"));
00434 }
00435 
00436 void ast_cdr_free(struct ast_cdr *cdr)
00437 {
00438 
00439    while (cdr) {
00440       struct ast_cdr *next = cdr->next;
00441 
00442       ast_cdr_free_vars(cdr, 0);
00443       ast_free(cdr);
00444       cdr = next;
00445    }
00446 }
00447 
00448 /*! \brief the same as a cdr_free call, only with no checks; just get rid of it */
00449 void ast_cdr_discard(struct ast_cdr *cdr)
00450 {
00451    while (cdr) {
00452       struct ast_cdr *next = cdr->next;
00453 
00454       ast_cdr_free_vars(cdr, 0);
00455       ast_free(cdr);
00456       cdr = next;
00457    }
00458 }
00459 
00460 struct ast_cdr *ast_cdr_alloc(void)
00461 {
00462    struct ast_cdr *x;
00463    x = ast_calloc(1, sizeof(*x));
00464    if (!x)
00465       ast_log(LOG_ERROR,"Allocation Failure for a CDR!\n");
00466    return x;
00467 }
00468 
00469 static void cdr_merge_vars(struct ast_cdr *to, struct ast_cdr *from)
00470 {
00471    struct ast_var_t *variablesfrom,*variablesto;
00472    struct varshead *headpfrom = &to->varshead;
00473    struct varshead *headpto = &from->varshead;
00474    AST_LIST_TRAVERSE_SAFE_BEGIN(headpfrom, variablesfrom, entries) {
00475       /* for every var in from, stick it in to */
00476       const char *fromvarname, *fromvarval;
00477       const char *tovarname = NULL, *tovarval = NULL;
00478       fromvarname = ast_var_name(variablesfrom);
00479       fromvarval = ast_var_value(variablesfrom);
00480       tovarname = 0;
00481 
00482       /* now, quick see if that var is in the 'to' cdr already */
00483       AST_LIST_TRAVERSE(headpto, variablesto, entries) {
00484 
00485          /* now, quick see if that var is in the 'to' cdr already */
00486          if ( strcasecmp(fromvarname, ast_var_name(variablesto)) == 0 ) {
00487             tovarname = ast_var_name(variablesto);
00488             tovarval = ast_var_value(variablesto);
00489             break;
00490          }
00491       }
00492       if (tovarname && strcasecmp(fromvarval,tovarval) != 0) {  /* this message here to see how irritating the userbase finds it */
00493          ast_log(LOG_NOTICE, "Merging CDR's: variable %s value %s dropped in favor of value %s\n", tovarname, fromvarval, tovarval);
00494          continue;
00495       } else if (tovarname && strcasecmp(fromvarval,tovarval) == 0) /* if they are the same, the job is done */
00496          continue;
00497 
00498       /* rip this var out of the from cdr, and stick it in the to cdr */
00499       AST_LIST_MOVE_CURRENT(headpto, entries);
00500    }
00501    AST_LIST_TRAVERSE_SAFE_END;
00502 }
00503 
00504 void ast_cdr_merge(struct ast_cdr *to, struct ast_cdr *from)
00505 {
00506    struct ast_cdr *zcdr;
00507    struct ast_cdr *lto = NULL;
00508    struct ast_cdr *lfrom = NULL;
00509    int discard_from = 0;
00510    
00511    if (!to || !from)
00512       return;
00513 
00514    /* don't merge into locked CDR's -- it's bad business */
00515    if (ast_test_flag(to, AST_CDR_FLAG_LOCKED)) {
00516       zcdr = to; /* safety valve? */
00517       while (to->next) {
00518          lto = to;
00519          to = to->next;
00520       }
00521       
00522       if (ast_test_flag(to, AST_CDR_FLAG_LOCKED)) {
00523          ast_log(LOG_WARNING, "Merging into locked CDR... no choice.");
00524          to = zcdr; /* safety-- if all there are is locked CDR's, then.... ?? */
00525          lto = NULL;
00526       }
00527    }
00528 
00529    if (ast_test_flag(from, AST_CDR_FLAG_LOCKED)) {
00530       struct ast_cdr *llfrom = NULL;
00531       discard_from = 1;
00532       if (lto) {
00533          /* insert the from stuff after lto */
00534          lto->next = from;
00535          lfrom = from;
00536          while (lfrom && lfrom->next) {
00537             if (!lfrom->next->next)
00538                llfrom = lfrom;
00539             lfrom = lfrom->next; 
00540          }
00541          /* rip off the last entry and put a copy of the to at the end */
00542          llfrom->next = to;
00543          from = lfrom;
00544       } else {
00545          /* save copy of the current *to cdr */
00546          struct ast_cdr tcdr;
00547          memcpy(&tcdr, to, sizeof(tcdr));
00548          /* copy in the locked from cdr */
00549          memcpy(to, from, sizeof(*to));
00550          lfrom = from;
00551          while (lfrom && lfrom->next) {
00552             if (!lfrom->next->next)
00553                llfrom = lfrom;
00554             lfrom = lfrom->next; 
00555          }
00556          from->next = NULL;
00557          /* rip off the last entry and put a copy of the to at the end */
00558          if (llfrom == from)
00559             to = to->next = ast_cdr_dup(&tcdr);
00560          else
00561             to = llfrom->next = ast_cdr_dup(&tcdr);
00562          from = lfrom;
00563       }
00564    }
00565    
00566    if (!ast_tvzero(from->start)) {
00567       if (!ast_tvzero(to->start)) {
00568          if (ast_tvcmp(to->start, from->start) > 0 ) {
00569             to->start = from->start; /* use the earliest time */
00570             from->start = ast_tv(0,0); /* we actively "steal" these values */
00571          }
00572          /* else nothing to do */
00573       } else {
00574          to->start = from->start;
00575          from->start = ast_tv(0,0); /* we actively "steal" these values */
00576       }
00577    }
00578    if (!ast_tvzero(from->answer)) {
00579       if (!ast_tvzero(to->answer)) {
00580          if (ast_tvcmp(to->answer, from->answer) > 0 ) {
00581             to->answer = from->answer; /* use the earliest time */
00582             from->answer = ast_tv(0,0); /* we actively "steal" these values */
00583          }
00584          /* we got the earliest answer time, so we'll settle for that? */
00585       } else {
00586          to->answer = from->answer;
00587          from->answer = ast_tv(0,0); /* we actively "steal" these values */
00588       }
00589    }
00590    if (!ast_tvzero(from->end)) {
00591       if (!ast_tvzero(to->end)) {
00592          if (ast_tvcmp(to->end, from->end) < 0 ) {
00593             to->end = from->end; /* use the latest time */
00594             from->end = ast_tv(0,0); /* we actively "steal" these values */
00595             to->duration = to->end.tv_sec - to->start.tv_sec;  /* don't forget to update the duration, billsec, when we set end */
00596             to->billsec = ast_tvzero(to->answer) ? 0 : to->end.tv_sec - to->answer.tv_sec;
00597          }
00598          /* else, nothing to do */
00599       } else {
00600          to->end = from->end;
00601          from->end = ast_tv(0,0); /* we actively "steal" these values */
00602          to->duration = to->end.tv_sec - to->start.tv_sec;
00603          to->billsec = ast_tvzero(to->answer) ? 0 : to->end.tv_sec - to->answer.tv_sec;
00604       }
00605    }
00606    if (to->disposition < from->disposition) {
00607       to->disposition = from->disposition;
00608       from->disposition = AST_CDR_NOANSWER;
00609    }
00610    if (ast_strlen_zero(to->lastapp) && !ast_strlen_zero(from->lastapp)) {
00611       ast_copy_string(to->lastapp, from->lastapp, sizeof(to->lastapp));
00612       from->lastapp[0] = 0; /* theft */
00613    }
00614    if (ast_strlen_zero(to->lastdata) && !ast_strlen_zero(from->lastdata)) {
00615       ast_copy_string(to->lastdata, from->lastdata, sizeof(to->lastdata));
00616       from->lastdata[0] = 0; /* theft */
00617    }
00618    if (ast_strlen_zero(to->dcontext) && !ast_strlen_zero(from->dcontext)) {
00619       ast_copy_string(to->dcontext, from->dcontext, sizeof(to->dcontext));
00620       from->dcontext[0] = 0; /* theft */
00621    }
00622    if (ast_strlen_zero(to->dstchannel) && !ast_strlen_zero(from->dstchannel)) {
00623       ast_copy_string(to->dstchannel, from->dstchannel, sizeof(to->dstchannel));
00624       from->dstchannel[0] = 0; /* theft */
00625    }
00626    if (!ast_strlen_zero(from->channel) && (ast_strlen_zero(to->channel) || !strncasecmp(from->channel, "Agent/", 6))) {
00627       ast_copy_string(to->channel, from->channel, sizeof(to->channel));
00628       from->channel[0] = 0; /* theft */
00629    }
00630    if (ast_strlen_zero(to->src) && !ast_strlen_zero(from->src)) {
00631       ast_copy_string(to->src, from->src, sizeof(to->src));
00632       from->src[0] = 0; /* theft */
00633    }
00634    if (ast_strlen_zero(to->clid) && !ast_strlen_zero(from->clid)) {
00635       ast_copy_string(to->clid, from->clid, sizeof(to->clid));
00636       from->clid[0] = 0; /* theft */
00637    }
00638    if (ast_strlen_zero(to->dst) && !ast_strlen_zero(from->dst)) {
00639       ast_copy_string(to->dst, from->dst, sizeof(to->dst));
00640       from->dst[0] = 0; /* theft */
00641    }
00642    if (!to->amaflags)
00643       to->amaflags = AST_CDR_DOCUMENTATION;
00644    if (!from->amaflags)
00645       from->amaflags = AST_CDR_DOCUMENTATION; /* make sure both amaflags are set to something (DOC is default) */
00646    if (ast_test_flag(from, AST_CDR_FLAG_LOCKED) || (to->amaflags == AST_CDR_DOCUMENTATION && from->amaflags != AST_CDR_DOCUMENTATION)) {
00647       to->amaflags = from->amaflags;
00648    }
00649    if (ast_test_flag(from, AST_CDR_FLAG_LOCKED) || (ast_strlen_zero(to->accountcode) && !ast_strlen_zero(from->accountcode))) {
00650       ast_copy_string(to->accountcode, from->accountcode, sizeof(to->accountcode));
00651    }
00652    if (ast_test_flag(from, AST_CDR_FLAG_LOCKED) || (ast_strlen_zero(to->userfield) && !ast_strlen_zero(from->userfield))) {
00653       ast_copy_string(to->userfield, from->userfield, sizeof(to->userfield));
00654    }
00655    /* flags, varsead, ? */
00656    cdr_merge_vars(from, to);
00657 
00658    if (ast_test_flag(from, AST_CDR_FLAG_KEEP_VARS))
00659       ast_set_flag(to, AST_CDR_FLAG_KEEP_VARS);
00660    if (ast_test_flag(from, AST_CDR_FLAG_POSTED))
00661       ast_set_flag(to, AST_CDR_FLAG_POSTED);
00662    if (ast_test_flag(from, AST_CDR_FLAG_LOCKED))
00663       ast_set_flag(to, AST_CDR_FLAG_LOCKED);
00664    if (ast_test_flag(from, AST_CDR_FLAG_CHILD))
00665       ast_set_flag(to, AST_CDR_FLAG_CHILD);
00666    if (ast_test_flag(from, AST_CDR_FLAG_POST_DISABLED))
00667       ast_set_flag(to, AST_CDR_FLAG_POST_DISABLED);
00668 
00669    /* last, but not least, we need to merge any forked CDRs to the 'to' cdr */
00670    while (from->next) {
00671       /* just rip 'em off the 'from' and insert them on the 'to' */
00672       zcdr = from->next;
00673       from->next = zcdr->next;
00674       zcdr->next = NULL;
00675       /* zcdr is now ripped from the current list; */
00676       ast_cdr_append(to, zcdr);
00677    }
00678    if (discard_from)
00679       ast_cdr_discard(from);
00680 }
00681 
00682 void ast_cdr_start(struct ast_cdr *cdr)
00683 {
00684    char *chan; 
00685 
00686    for (; cdr; cdr = cdr->next) {
00687       if (!ast_test_flag(cdr, AST_CDR_FLAG_LOCKED)) {
00688          chan = S_OR(cdr->channel, "<unknown>");
00689          check_post(cdr);
00690          cdr->start = ast_tvnow();
00691       }
00692    }
00693 }
00694 
00695 void ast_cdr_answer(struct ast_cdr *cdr)
00696 {
00697 
00698    for (; cdr; cdr = cdr->next) {
00699       if (ast_test_flag(cdr, AST_CDR_FLAG_ANSLOCKED)) 
00700          continue;
00701       if (ast_test_flag(cdr, AST_CDR_FLAG_DONT_TOUCH) && ast_test_flag(cdr, AST_CDR_FLAG_LOCKED))
00702          continue;
00703       check_post(cdr);
00704       if (cdr->disposition < AST_CDR_ANSWERED)
00705          cdr->disposition = AST_CDR_ANSWERED;
00706       if (ast_tvzero(cdr->answer))
00707          cdr->answer = ast_tvnow();
00708    }
00709 }
00710 
00711 void ast_cdr_busy(struct ast_cdr *cdr)
00712 {
00713 
00714    for (; cdr; cdr = cdr->next) {
00715       if (!ast_test_flag(cdr, AST_CDR_FLAG_LOCKED)) {
00716          check_post(cdr);
00717          cdr->disposition = AST_CDR_BUSY;
00718       }
00719    }
00720 }
00721 
00722 void ast_cdr_failed(struct ast_cdr *cdr)
00723 {
00724    for (; cdr; cdr = cdr->next) {
00725       check_post(cdr);
00726       if (!ast_test_flag(cdr, AST_CDR_FLAG_LOCKED)) {
00727          check_post(cdr);
00728          if (cdr->disposition < AST_CDR_FAILED)
00729             cdr->disposition = AST_CDR_FAILED;
00730       }
00731    }
00732 }
00733 
00734 void ast_cdr_noanswer(struct ast_cdr *cdr)
00735 {
00736    char *chan; 
00737 
00738    while (cdr) {
00739       if (!ast_test_flag(cdr, AST_CDR_FLAG_LOCKED)) {
00740          chan = !ast_strlen_zero(cdr->channel) ? cdr->channel : "<unknown>";
00741          check_post(cdr);
00742          cdr->disposition = AST_CDR_NOANSWER;
00743       }
00744       cdr = cdr->next;
00745    }
00746 }
00747 
00748 /* everywhere ast_cdr_disposition is called, it will call ast_cdr_failed() 
00749    if ast_cdr_disposition returns a non-zero value */
00750 
00751 int ast_cdr_disposition(struct ast_cdr *cdr, int cause)
00752 {
00753    int res = 0;
00754 
00755    for (; cdr; cdr = cdr->next) {
00756       switch (cause) {  /* handle all the non failure, busy cases, return 0 not to set disposition,
00757                      return -1 to set disposition to FAILED */
00758       case AST_CAUSE_BUSY:
00759          ast_cdr_busy(cdr);
00760          break;
00761       case AST_CAUSE_NO_ANSWER:
00762          ast_cdr_noanswer(cdr);
00763          break;
00764       case AST_CAUSE_NORMAL:
00765          break;
00766       default:
00767          res = -1;
00768       }
00769    }
00770    return res;
00771 }
00772 
00773 void ast_cdr_setdestchan(struct ast_cdr *cdr, const char *chann)
00774 {
00775    for (; cdr; cdr = cdr->next) {
00776       if (!ast_test_flag(cdr, AST_CDR_FLAG_LOCKED)) {
00777          check_post(cdr);
00778          ast_copy_string(cdr->dstchannel, chann, sizeof(cdr->dstchannel));
00779       }
00780    }
00781 }
00782 
00783 void ast_cdr_setapp(struct ast_cdr *cdr, const char *app, const char *data)
00784 {
00785 
00786    for (; cdr; cdr = cdr->next) {
00787       if (!ast_test_flag(cdr, AST_CDR_FLAG_LOCKED)) {
00788          check_post(cdr);
00789          ast_copy_string(cdr->lastapp, S_OR(app, ""), sizeof(cdr->lastapp));
00790          ast_copy_string(cdr->lastdata, S_OR(data, ""), sizeof(cdr->lastdata));
00791       }
00792    }
00793 }
00794 
00795 void ast_cdr_setanswer(struct ast_cdr *cdr, struct timeval t)
00796 {
00797 
00798    for (; cdr; cdr = cdr->next) {
00799       if (ast_test_flag(cdr, AST_CDR_FLAG_ANSLOCKED))
00800          continue;
00801       if (ast_test_flag(cdr, AST_CDR_FLAG_DONT_TOUCH) && ast_test_flag(cdr, AST_CDR_FLAG_LOCKED))
00802          continue;
00803       check_post(cdr);
00804       cdr->answer = t;
00805    }
00806 }
00807 
00808 void ast_cdr_setdisposition(struct ast_cdr *cdr, long int disposition)
00809 {
00810 
00811    for (; cdr; cdr = cdr->next) {
00812       if (ast_test_flag(cdr, AST_CDR_FLAG_LOCKED))
00813          continue;
00814       check_post(cdr);
00815       cdr->disposition = disposition;
00816    }
00817 }
00818 
00819 /* set cid info for one record */
00820 static void set_one_cid(struct ast_cdr *cdr, struct ast_channel *c)
00821 {
00822    /* Grab source from ANI or normal Caller*ID */
00823    const char *num = S_OR(c->cid.cid_ani, c->cid.cid_num);
00824    if (!cdr)
00825       return;
00826    if (!ast_strlen_zero(c->cid.cid_name)) {
00827       if (!ast_strlen_zero(num)) /* both name and number */
00828          snprintf(cdr->clid, sizeof(cdr->clid), "\"%s\" <%s>", c->cid.cid_name, num);
00829       else           /* only name */
00830          ast_copy_string(cdr->clid, c->cid.cid_name, sizeof(cdr->clid));
00831    } else if (!ast_strlen_zero(num)) { /* only number */
00832       ast_copy_string(cdr->clid, num, sizeof(cdr->clid));
00833    } else {          /* nothing known */
00834       cdr->clid[0] = '\0';
00835    }
00836    ast_copy_string(cdr->src, S_OR(num, ""), sizeof(cdr->src));
00837    ast_cdr_setvar(cdr, "dnid", S_OR(c->cid.cid_dnid, ""), 0);
00838 
00839 }
00840 int ast_cdr_setcid(struct ast_cdr *cdr, struct ast_channel *c)
00841 {
00842    for (; cdr; cdr = cdr->next) {
00843       if (!ast_test_flag(cdr, AST_CDR_FLAG_LOCKED))
00844          set_one_cid(cdr, c);
00845    }
00846    return 0;
00847 }
00848 
00849 int ast_cdr_init(struct ast_cdr *cdr, struct ast_channel *c)
00850 {
00851    char *chan;
00852 
00853    for ( ; cdr ; cdr = cdr->next) {
00854       if (!ast_test_flag(cdr, AST_CDR_FLAG_LOCKED)) {
00855          chan = S_OR(cdr->channel, "<unknown>");
00856          ast_copy_string(cdr->channel, c->name, sizeof(cdr->channel));
00857          set_one_cid(cdr, c);
00858 
00859          cdr->disposition = (c->_state == AST_STATE_UP) ?  AST_CDR_ANSWERED : AST_CDR_NOANSWER;
00860          cdr->amaflags = c->amaflags ? c->amaflags :  ast_default_amaflags;
00861          ast_copy_string(cdr->accountcode, c->accountcode, sizeof(cdr->accountcode));
00862          /* Destination information */
00863          ast_copy_string(cdr->dst, S_OR(c->macroexten,c->exten), sizeof(cdr->dst));
00864          ast_copy_string(cdr->dcontext, S_OR(c->macrocontext,c->context), sizeof(cdr->dcontext));
00865          /* Unique call identifier */
00866          ast_copy_string(cdr->uniqueid, c->uniqueid, sizeof(cdr->uniqueid));
00867       }
00868    }
00869    return 0;
00870 }
00871 
00872 /* Three routines were "fixed" via 10668, and later shown that 
00873    users were depending on this behavior. ast_cdr_end,
00874    ast_cdr_setvar and ast_cdr_answer are the three routines.
00875    While most of the other routines would not touch 
00876    LOCKED cdr's, these three routines were designed to
00877    operate on locked CDR's as a matter of course.
00878    I now appreciate how this plays with the ForkCDR app,
00879    which forms these cdr chains in the first place. 
00880    cdr_end is pretty key: all cdrs created are closed
00881    together. They only vary by start time. Arithmetically,
00882    users can calculate the subintervals they wish to track. */
00883 
00884 void ast_cdr_end(struct ast_cdr *cdr)
00885 {
00886    for ( ; cdr ; cdr = cdr->next) {
00887       if (ast_test_flag(cdr, AST_CDR_FLAG_DONT_TOUCH) && ast_test_flag(cdr, AST_CDR_FLAG_LOCKED))
00888          continue;
00889       check_post(cdr);
00890       if (ast_tvzero(cdr->end))
00891          cdr->end = ast_tvnow();
00892       if (ast_tvzero(cdr->start)) {
00893          ast_log(LOG_WARNING, "CDR on channel '%s' has not started\n", S_OR(cdr->channel, "<unknown>"));
00894          cdr->disposition = AST_CDR_FAILED;
00895       } else
00896          cdr->duration = cdr->end.tv_sec - cdr->start.tv_sec;
00897       if (ast_tvzero(cdr->answer)) {
00898          if (cdr->disposition == AST_CDR_ANSWERED) {
00899             ast_log(LOG_WARNING, "CDR on channel '%s' has no answer time but is 'ANSWERED'\n", S_OR(cdr->channel, "<unknown>"));
00900             cdr->disposition = AST_CDR_FAILED;
00901          }
00902       } else {
00903          cdr->billsec = cdr->end.tv_sec - cdr->answer.tv_sec;
00904          if (ast_test_flag(&ast_options, AST_OPT_FLAG_INITIATED_SECONDS))
00905             cdr->billsec += cdr->end.tv_usec > cdr->answer.tv_usec ? 1 : 0;
00906       }
00907    }
00908 }
00909 
00910 char *ast_cdr_disp2str(int disposition)
00911 {
00912    switch (disposition) {
00913    case AST_CDR_NULL:
00914       return "NO ANSWER"; /* by default, for backward compatibility */
00915    case AST_CDR_NOANSWER:
00916       return "NO ANSWER";
00917    case AST_CDR_FAILED:
00918       return "FAILED";     
00919    case AST_CDR_BUSY:
00920       return "BUSY";    
00921    case AST_CDR_ANSWERED:
00922       return "ANSWERED";
00923    }
00924    return "UNKNOWN";
00925 }
00926 
00927 /*! Converts AMA flag to printable string */
00928 char *ast_cdr_flags2str(int flag)
00929 {
00930    switch (flag) {
00931    case AST_CDR_OMIT:
00932       return "OMIT";
00933    case AST_CDR_BILLING:
00934       return "BILLING";
00935    case AST_CDR_DOCUMENTATION:
00936       return "DOCUMENTATION";
00937    }
00938    return "Unknown";
00939 }
00940 
00941 int ast_cdr_setaccount(struct ast_channel *chan, const char *account)
00942 {
00943    struct ast_cdr *cdr = chan->cdr;
00944    char buf[BUFSIZ/2] = "";
00945    if (!ast_strlen_zero(chan->accountcode))
00946       ast_copy_string(buf, chan->accountcode, sizeof(buf));
00947 
00948    ast_string_field_set(chan, accountcode, account);
00949    for ( ; cdr ; cdr = cdr->next) {
00950       if (!ast_test_flag(cdr, AST_CDR_FLAG_LOCKED)) {
00951          ast_copy_string(cdr->accountcode, chan->accountcode, sizeof(cdr->accountcode));
00952       }
00953    }
00954 
00955    /* Signal change of account code to manager */
00956    manager_event(EVENT_FLAG_CALL, "NewAccountCode", "Channel: %s\r\nUniqueid: %s\r\nAccountCode: %s\r\nOldAccountCode: %s\r\n", chan->name, chan->uniqueid, chan->accountcode, buf);
00957    return 0;
00958 }
00959 
00960 int ast_cdr_setamaflags(struct ast_channel *chan, const char *flag)
00961 {
00962    struct ast_cdr *cdr;
00963    int newflag = ast_cdr_amaflags2int(flag);
00964    if (newflag) {
00965       for (cdr = chan->cdr; cdr; cdr = cdr->next) {
00966          if (!ast_test_flag(cdr, AST_CDR_FLAG_LOCKED)) {
00967             cdr->amaflags = newflag;
00968          }
00969       }
00970    }
00971 
00972    return 0;
00973 }
00974 
00975 int ast_cdr_setuserfield(struct ast_channel *chan, const char *userfield)
00976 {
00977    struct ast_cdr *cdr = chan->cdr;
00978 
00979    for ( ; cdr ; cdr = cdr->next) {
00980       if (!ast_test_flag(cdr, AST_CDR_FLAG_LOCKED)) 
00981          ast_copy_string(cdr->userfield, userfield, sizeof(cdr->userfield));
00982    }
00983 
00984    return 0;
00985 }
00986 
00987 int ast_cdr_appenduserfield(struct ast_channel *chan, const char *userfield)
00988 {
00989    struct ast_cdr *cdr = chan->cdr;
00990 
00991    for ( ; cdr ; cdr = cdr->next) {
00992       int len = strlen(cdr->userfield);
00993 
00994       if (!ast_test_flag(cdr, AST_CDR_FLAG_LOCKED))
00995          ast_copy_string(cdr->userfield + len, userfield, sizeof(cdr->userfield) - len);
00996    }
00997 
00998    return 0;
00999 }
01000 
01001 int ast_cdr_update(struct ast_channel *c)
01002 {
01003    struct ast_cdr *cdr = c->cdr;
01004 
01005    for ( ; cdr ; cdr = cdr->next) {
01006       if (!ast_test_flag(cdr, AST_CDR_FLAG_LOCKED)) {
01007          set_one_cid(cdr, c);
01008 
01009          /* Copy account code et-al */ 
01010          ast_copy_string(cdr->accountcode, c->accountcode, sizeof(cdr->accountcode));
01011          
01012          /* Destination information */ /* XXX privilege macro* ? */
01013          ast_copy_string(cdr->dst, S_OR(c->macroexten, c->exten), sizeof(cdr->dst));
01014          ast_copy_string(cdr->dcontext, S_OR(c->macrocontext, c->context), sizeof(cdr->dcontext));
01015       }
01016    }
01017 
01018    return 0;
01019 }
01020 
01021 int ast_cdr_amaflags2int(const char *flag)
01022 {
01023    if (!strcasecmp(flag, "default"))
01024       return 0;
01025    if (!strcasecmp(flag, "omit"))
01026       return AST_CDR_OMIT;
01027    if (!strcasecmp(flag, "billing"))
01028       return AST_CDR_BILLING;
01029    if (!strcasecmp(flag, "documentation"))
01030       return AST_CDR_DOCUMENTATION;
01031    return -1;
01032 }
01033 
01034 static void post_cdr(struct ast_cdr *cdr)
01035 {
01036    char *chan;
01037    struct ast_cdr_beitem *i;
01038 
01039    for ( ; cdr ; cdr = cdr->next) {
01040       if (!unanswered && cdr->disposition < AST_CDR_ANSWERED && (ast_strlen_zero(cdr->channel) || ast_strlen_zero(cdr->dstchannel))) {
01041          /* For people, who don't want to see unanswered single-channel events */
01042          ast_set_flag(cdr, AST_CDR_FLAG_POST_DISABLED);
01043          continue;
01044       }
01045 
01046       /* don't post CDRs that are for dialed channels unless those
01047        * channels were originated from asterisk (pbx_spool, manager,
01048        * cli) */
01049       if (ast_test_flag(cdr, AST_CDR_FLAG_DIALED) && !ast_test_flag(cdr, AST_CDR_FLAG_ORIGINATED)) {
01050          ast_set_flag(cdr, AST_CDR_FLAG_POST_DISABLED);
01051          continue;
01052       }
01053 
01054       chan = S_OR(cdr->channel, "<unknown>");
01055       check_post(cdr);
01056       ast_set_flag(cdr, AST_CDR_FLAG_POSTED);
01057       if (ast_test_flag(cdr, AST_CDR_FLAG_POST_DISABLED))
01058          continue;
01059       AST_RWLIST_RDLOCK(&be_list);
01060       AST_RWLIST_TRAVERSE(&be_list, i, list) {
01061          i->be(cdr);
01062       }
01063       AST_RWLIST_UNLOCK(&be_list);
01064    }
01065 }
01066 
01067 void ast_cdr_reset(struct ast_cdr *cdr, struct ast_flags *_flags)
01068 {
01069    struct ast_cdr *duplicate;
01070    struct ast_flags flags = { 0 };
01071 
01072    if (_flags)
01073       ast_copy_flags(&flags, _flags, AST_FLAGS_ALL);
01074 
01075    for ( ; cdr ; cdr = cdr->next) {
01076       /* Detach if post is requested */
01077       if (ast_test_flag(&flags, AST_CDR_FLAG_LOCKED) || !ast_test_flag(cdr, AST_CDR_FLAG_LOCKED)) {
01078          if (ast_test_flag(&flags, AST_CDR_FLAG_POSTED)) {
01079             ast_cdr_end(cdr);
01080             if ((duplicate = ast_cdr_dup(cdr))) {
01081                ast_cdr_detach(duplicate);
01082             }
01083             ast_set_flag(cdr, AST_CDR_FLAG_POSTED);
01084          }
01085 
01086          /* enable CDR only */
01087          if (ast_test_flag(&flags, AST_CDR_FLAG_POST_ENABLE)) {
01088             ast_clear_flag(cdr, AST_CDR_FLAG_POST_DISABLED);
01089             continue;
01090          }
01091 
01092          /* clear variables */
01093          if (!ast_test_flag(&flags, AST_CDR_FLAG_KEEP_VARS)) {
01094             ast_cdr_free_vars(cdr, 0);
01095          }
01096 
01097          /* Reset to initial state */
01098          ast_clear_flag(cdr, AST_FLAGS_ALL); 
01099          memset(&cdr->start, 0, sizeof(cdr->start));
01100          memset(&cdr->end, 0, sizeof(cdr->end));
01101          memset(&cdr->answer, 0, sizeof(cdr->answer));
01102          cdr->billsec = 0;
01103          cdr->duration = 0;
01104          ast_cdr_start(cdr);
01105          cdr->disposition = AST_CDR_NOANSWER;
01106       }
01107    }
01108 }
01109 
01110 void ast_cdr_specialized_reset(struct ast_cdr *cdr, struct ast_flags *_flags)
01111 {
01112    struct ast_flags flags = { 0 };
01113 
01114    if (_flags)
01115       ast_copy_flags(&flags, _flags, AST_FLAGS_ALL);
01116    
01117    /* Reset to initial state */
01118    if (ast_test_flag(cdr, AST_CDR_FLAG_POST_DISABLED)) { /* But do NOT lose the NoCDR() setting */
01119       ast_clear_flag(cdr, AST_FLAGS_ALL); 
01120       ast_set_flag(cdr, AST_CDR_FLAG_POST_DISABLED);
01121    } else {
01122       ast_clear_flag(cdr, AST_FLAGS_ALL); 
01123    }
01124    
01125    memset(&cdr->start, 0, sizeof(cdr->start));
01126    memset(&cdr->end, 0, sizeof(cdr->end));
01127    memset(&cdr->answer, 0, sizeof(cdr->answer));
01128    cdr->billsec = 0;
01129    cdr->duration = 0;
01130    ast_cdr_start(cdr);
01131    cdr->disposition = AST_CDR_NULL;
01132 }
01133 
01134 struct ast_cdr *ast_cdr_append(struct ast_cdr *cdr, struct ast_cdr *newcdr) 
01135 {
01136    struct ast_cdr *ret;
01137 
01138    if (cdr) {
01139       ret = cdr;
01140 
01141       while (cdr->next)
01142          cdr = cdr->next;
01143       cdr->next = newcdr;
01144    } else {
01145       ret = newcdr;
01146    }
01147 
01148    return ret;
01149 }
01150 
01151 /*! \note Don't call without cdr_batch_lock */
01152 static void reset_batch(void)
01153 {
01154    batch->size = 0;
01155    batch->head = NULL;
01156    batch->tail = NULL;
01157 }
01158 
01159 /*! \note Don't call without cdr_batch_lock */
01160 static int init_batch(void)
01161 {
01162    /* This is the single meta-batch used to keep track of all CDRs during the entire life of the program */
01163    if (!(batch = ast_malloc(sizeof(*batch))))
01164       return -1;
01165 
01166    reset_batch();
01167 
01168    return 0;
01169 }
01170 
01171 static void *do_batch_backend_process(void *data)
01172 {
01173    struct ast_cdr_batch_item *processeditem;
01174    struct ast_cdr_batch_item *batchitem = data;
01175 
01176    /* Push each CDR into storage mechanism(s) and free all the memory */
01177    while (batchitem) {
01178       post_cdr(batchitem->cdr);
01179       ast_cdr_free(batchitem->cdr);
01180       processeditem = batchitem;
01181       batchitem = batchitem->next;
01182       ast_free(processeditem);
01183    }
01184 
01185    return NULL;
01186 }
01187 
01188 void ast_cdr_submit_batch(int do_shutdown)
01189 {
01190    struct ast_cdr_batch_item *oldbatchitems = NULL;
01191    pthread_t batch_post_thread = AST_PTHREADT_NULL;
01192 
01193    /* if there's no batch, or no CDRs in the batch, then there's nothing to do */
01194    if (!batch || !batch->head)
01195       return;
01196 
01197    /* move the old CDRs aside, and prepare a new CDR batch */
01198    ast_mutex_lock(&cdr_batch_lock);
01199    oldbatchitems = batch->head;
01200    reset_batch();
01201    ast_mutex_unlock(&cdr_batch_lock);
01202 
01203    /* if configured, spawn a new thread to post these CDRs,
01204       also try to save as much as possible if we are shutting down safely */
01205    if (batchscheduleronly || do_shutdown) {
01206       ast_debug(1, "CDR single-threaded batch processing begins now\n");
01207       do_batch_backend_process(oldbatchitems);
01208    } else {
01209       if (ast_pthread_create_detached_background(&batch_post_thread, NULL, do_batch_backend_process, oldbatchitems)) {
01210          ast_log(LOG_WARNING, "CDR processing thread could not detach, now trying in this thread\n");
01211          do_batch_backend_process(oldbatchitems);
01212       } else {
01213          ast_debug(1, "CDR multi-threaded batch processing begins now\n");
01214       }
01215    }
01216 }
01217 
01218 static int submit_scheduled_batch(const void *data)
01219 {
01220    ast_cdr_submit_batch(0);
01221    /* manually reschedule from this point in time */
01222    cdr_sched = ast_sched_add(sched, batchtime * 1000, submit_scheduled_batch, NULL);
01223    /* returning zero so the scheduler does not automatically reschedule */
01224    return 0;
01225 }
01226 
01227 static void submit_unscheduled_batch(void)
01228 {
01229    /* this is okay since we are not being called from within the scheduler */
01230    AST_SCHED_DEL(sched, cdr_sched);
01231    /* schedule the submission to occur ASAP (1 ms) */
01232    cdr_sched = ast_sched_add(sched, 1, submit_scheduled_batch, NULL);
01233    /* signal the do_cdr thread to wakeup early and do some work (that lazy thread ;) */
01234    ast_mutex_lock(&cdr_pending_lock);
01235    ast_cond_signal(&cdr_pending_cond);
01236    ast_mutex_unlock(&cdr_pending_lock);
01237 }
01238 
01239 void ast_cdr_detach(struct ast_cdr *cdr)
01240 {
01241    struct ast_cdr_batch_item *newtail;
01242    int curr;
01243 
01244    if (!cdr)
01245       return;
01246 
01247    /* maybe they disabled CDR stuff completely, so just drop it */
01248    if (!enabled) {
01249       ast_debug(1, "Dropping CDR !\n");
01250       ast_set_flag(cdr, AST_CDR_FLAG_POST_DISABLED);
01251       ast_cdr_free(cdr);
01252       return;
01253    }
01254 
01255    /* post stuff immediately if we are not in batch mode, this is legacy behaviour */
01256    if (!batchmode) {
01257       post_cdr(cdr);
01258       ast_cdr_free(cdr);
01259       return;
01260    }
01261 
01262    /* otherwise, each CDR gets put into a batch list (at the end) */
01263    ast_debug(1, "CDR detaching from this thread\n");
01264 
01265    /* we'll need a new tail for every CDR */
01266    if (!(newtail = ast_calloc(1, sizeof(*newtail)))) {
01267       post_cdr(cdr);
01268       ast_cdr_free(cdr);
01269       return;
01270    }
01271 
01272    /* don't traverse a whole list (just keep track of the tail) */
01273    ast_mutex_lock(&cdr_batch_lock);
01274    if (!batch)
01275       init_batch();
01276    if (!batch->head) {
01277       /* new batch is empty, so point the head at the new tail */
01278       batch->head = newtail;
01279    } else {
01280       /* already got a batch with something in it, so just append a new tail */
01281       batch->tail->next = newtail;
01282    }
01283    newtail->cdr = cdr;
01284    batch->tail = newtail;
01285    curr = batch->size++;
01286    ast_mutex_unlock(&cdr_batch_lock);
01287 
01288    /* if we have enough stuff to post, then do it */
01289    if (curr >= (batchsize - 1))
01290       submit_unscheduled_batch();
01291 }
01292 
01293 static void *do_cdr(void *data)
01294 {
01295    struct timespec timeout;
01296    int schedms;
01297    int numevents = 0;
01298 
01299    for (;;) {
01300       struct timeval now;
01301       schedms = ast_sched_wait(sched);
01302       /* this shouldn't happen, but provide a 1 second default just in case */
01303       if (schedms <= 0)
01304          schedms = 1000;
01305       now = ast_tvadd(ast_tvnow(), ast_samp2tv(schedms, 1000));
01306       timeout.tv_sec = now.tv_sec;
01307       timeout.tv_nsec = now.tv_usec * 1000;
01308       /* prevent stuff from clobbering cdr_pending_cond, then wait on signals sent to it until the timeout expires */
01309       ast_mutex_lock(&cdr_pending_lock);
01310       ast_cond_timedwait(&cdr_pending_cond, &cdr_pending_lock, &timeout);
01311       numevents = ast_sched_runq(sched);
01312       ast_mutex_unlock(&cdr_pending_lock);
01313       ast_debug(2, "Processed %d scheduled CDR batches from the run queue\n", numevents);
01314    }
01315 
01316    return NULL;
01317 }
01318 
01319 static char *handle_cli_status(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
01320 {
01321    struct ast_cdr_beitem *beitem=NULL;
01322    int cnt=0;
01323    long nextbatchtime=0;
01324 
01325    switch (cmd) {
01326    case CLI_INIT:
01327       e->command = "cdr show status";
01328       e->usage = 
01329          "Usage: cdr show status\n"
01330          "  Displays the Call Detail Record engine system status.\n";
01331       return NULL;
01332    case CLI_GENERATE:
01333       return NULL;
01334    }
01335 
01336    if (a->argc > 3)
01337       return CLI_SHOWUSAGE;
01338 
01339    ast_cli(a->fd, "\n");
01340    ast_cli(a->fd, "Call Detail Record (CDR) settings\n");
01341    ast_cli(a->fd, "----------------------------------\n");
01342    ast_cli(a->fd, "  Logging:                    %s\n", enabled ? "Enabled" : "Disabled");
01343    ast_cli(a->fd, "  Mode:                       %s\n", batchmode ? "Batch" : "Simple");
01344    if (enabled) {
01345       ast_cli(a->fd, "  Log unanswered calls:       %s\n\n", unanswered ? "Yes" : "No");
01346       if (batchmode) {
01347          ast_cli(a->fd, "* Batch Mode Settings\n");
01348          ast_cli(a->fd, "  -------------------\n");
01349          if (batch)
01350             cnt = batch->size;
01351          if (cdr_sched > -1)
01352             nextbatchtime = ast_sched_when(sched, cdr_sched);
01353          ast_cli(a->fd, "  Safe shutdown:              %s\n", batchsafeshutdown ? "Enabled" : "Disabled");
01354          ast_cli(a->fd, "  Threading model:            %s\n", batchscheduleronly ? "Scheduler only" : "Scheduler plus separate threads");
01355          ast_cli(a->fd, "  Current batch size:         %d record%s\n", cnt, ESS(cnt));
01356          ast_cli(a->fd, "  Maximum batch size:         %d record%s\n", batchsize, ESS(batchsize));
01357          ast_cli(a->fd, "  Maximum batch time:         %d second%s\n", batchtime, ESS(batchtime));
01358          ast_cli(a->fd, "  Next batch processing time: %ld second%s\n\n", nextbatchtime, ESS(nextbatchtime));
01359       }
01360       ast_cli(a->fd, "* Registered Backends\n");
01361       ast_cli(a->fd, "  -------------------\n");
01362       AST_RWLIST_RDLOCK(&be_list);
01363       if (AST_RWLIST_EMPTY(&be_list)) {
01364          ast_cli(a->fd, "    (none)\n");
01365       } else {
01366          AST_RWLIST_TRAVERSE(&be_list, beitem, list) {
01367             ast_cli(a->fd, "    %s\n", beitem->name);
01368          }
01369       }
01370       AST_RWLIST_UNLOCK(&be_list);
01371       ast_cli(a->fd, "\n");
01372    }
01373 
01374    return CLI_SUCCESS;
01375 }
01376 
01377 static char *handle_cli_submit(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
01378 {
01379    switch (cmd) {
01380    case CLI_INIT:
01381       e->command = "cdr submit";
01382       e->usage = 
01383          "Usage: cdr submit\n"
01384          "       Posts all pending batched CDR data to the configured CDR backend engine modules.\n";
01385       return NULL;
01386    case CLI_GENERATE:
01387       return NULL;
01388    }
01389    if (a->argc > 2)
01390       return CLI_SHOWUSAGE;
01391 
01392    submit_unscheduled_batch();
01393    ast_cli(a->fd, "Submitted CDRs to backend engines for processing.  This may take a while.\n");
01394 
01395    return CLI_SUCCESS;
01396 }
01397 
01398 static struct ast_cli_entry cli_submit = AST_CLI_DEFINE(handle_cli_submit, "Posts all pending batched CDR data");
01399 static struct ast_cli_entry cli_status = AST_CLI_DEFINE(handle_cli_status, "Display the CDR status");
01400 
01401 static int do_reload(int reload)
01402 {
01403    struct ast_config *config;
01404    const char *enabled_value;
01405    const char *unanswered_value;
01406    const char *batched_value;
01407    const char *scheduleronly_value;
01408    const char *batchsafeshutdown_value;
01409    const char *size_value;
01410    const char *time_value;
01411    const char *end_before_h_value;
01412    const char *initiatedseconds_value;
01413    int cfg_size;
01414    int cfg_time;
01415    int was_enabled;
01416    int was_batchmode;
01417    int res=0;
01418    struct ast_flags config_flags = { reload ? CONFIG_FLAG_FILEUNCHANGED : 0 };
01419 
01420    if ((config = ast_config_load2("cdr.conf", "cdr", config_flags)) == CONFIG_STATUS_FILEUNCHANGED) {
01421       return 0;
01422    }
01423 
01424    ast_mutex_lock(&cdr_batch_lock);
01425 
01426    was_enabled = enabled;
01427    was_batchmode = batchmode;
01428 
01429    batchsize = BATCH_SIZE_DEFAULT;
01430    batchtime = BATCH_TIME_DEFAULT;
01431    batchscheduleronly = BATCH_SCHEDULER_ONLY_DEFAULT;
01432    batchsafeshutdown = BATCH_SAFE_SHUTDOWN_DEFAULT;
01433    enabled = ENABLED_DEFAULT;
01434    batchmode = BATCHMODE_DEFAULT;
01435    unanswered = UNANSWERED_DEFAULT;
01436 
01437    if (config == CONFIG_STATUS_FILEMISSING || config == CONFIG_STATUS_FILEINVALID) {
01438       ast_mutex_unlock(&cdr_batch_lock);
01439       return 0;
01440    }
01441 
01442    /* don't run the next scheduled CDR posting while reloading */
01443    AST_SCHED_DEL(sched, cdr_sched);
01444 
01445    if (config) {
01446       if ((enabled_value = ast_variable_retrieve(config, "general", "enable"))) {
01447          enabled = ast_true(enabled_value);
01448       }
01449       if ((unanswered_value = ast_variable_retrieve(config, "general", "unanswered"))) {
01450          unanswered = ast_true(unanswered_value);
01451       }
01452       if ((batched_value = ast_variable_retrieve(config, "general", "batch"))) {
01453          batchmode = ast_true(batched_value);
01454       }
01455       if ((scheduleronly_value = ast_variable_retrieve(config, "general", "scheduleronly"))) {
01456          batchscheduleronly = ast_true(scheduleronly_value);
01457       }
01458       if ((batchsafeshutdown_value = ast_variable_retrieve(config, "general", "safeshutdown"))) {
01459          batchsafeshutdown = ast_true(batchsafeshutdown_value);
01460       }
01461       if ((size_value = ast_variable_retrieve(config, "general", "size"))) {
01462          if (sscanf(size_value, "%30d", &cfg_size) < 1)
01463             ast_log(LOG_WARNING, "Unable to convert '%s' to a numeric value.\n", size_value);
01464          else if (cfg_size < 0)
01465             ast_log(LOG_WARNING, "Invalid maximum batch size '%d' specified, using default\n", cfg_size);
01466          else
01467             batchsize = cfg_size;
01468       }
01469       if ((time_value = ast_variable_retrieve(config, "general", "time"))) {
01470          if (sscanf(time_value, "%30d", &cfg_time) < 1)
01471             ast_log(LOG_WARNING, "Unable to convert '%s' to a numeric value.\n", time_value);
01472          else if (cfg_time < 0)
01473             ast_log(LOG_WARNING, "Invalid maximum batch time '%d' specified, using default\n", cfg_time);
01474          else
01475             batchtime = cfg_time;
01476       }
01477       if ((end_before_h_value = ast_variable_retrieve(config, "general", "endbeforehexten")))
01478          ast_set2_flag(&ast_options, ast_true(end_before_h_value), AST_OPT_FLAG_END_CDR_BEFORE_H_EXTEN);
01479       if ((initiatedseconds_value = ast_variable_retrieve(config, "general", "initiatedseconds")))
01480          ast_set2_flag(&ast_options, ast_true(initiatedseconds_value), AST_OPT_FLAG_INITIATED_SECONDS);
01481    }
01482 
01483    if (enabled && !batchmode) {
01484       ast_log(LOG_NOTICE, "CDR simple logging enabled.\n");
01485    } else if (enabled && batchmode) {
01486       cdr_sched = ast_sched_add(sched, batchtime * 1000, submit_scheduled_batch, NULL);
01487       ast_log(LOG_NOTICE, "CDR batch mode logging enabled, first of either size %d or time %d seconds.\n", batchsize, batchtime);
01488    } else {
01489       ast_log(LOG_NOTICE, "CDR logging disabled, data will be lost.\n");
01490    }
01491 
01492    /* if this reload enabled the CDR batch mode, create the background thread
01493       if it does not exist */
01494    if (enabled && batchmode && (!was_enabled || !was_batchmode) && (cdr_thread == AST_PTHREADT_NULL)) {
01495       ast_cond_init(&cdr_pending_cond, NULL);
01496       if (ast_pthread_create_background(&cdr_thread, NULL, do_cdr, NULL) < 0) {
01497          ast_log(LOG_ERROR, "Unable to start CDR thread.\n");
01498          AST_SCHED_DEL(sched, cdr_sched);
01499       } else {
01500          ast_cli_register(&cli_submit);
01501          ast_register_atexit(ast_cdr_engine_term);
01502          res = 0;
01503       }
01504    /* if this reload disabled the CDR and/or batch mode and there is a background thread,
01505       kill it */
01506    } else if (((!enabled && was_enabled) || (!batchmode && was_batchmode)) && (cdr_thread != AST_PTHREADT_NULL)) {
01507       /* wake up the thread so it will exit */
01508       pthread_cancel(cdr_thread);
01509       pthread_kill(cdr_thread, SIGURG);
01510       pthread_join(cdr_thread, NULL);
01511       cdr_thread = AST_PTHREADT_NULL;
01512       ast_cond_destroy(&cdr_pending_cond);
01513       ast_cli_unregister(&cli_submit);
01514       ast_unregister_atexit(ast_cdr_engine_term);
01515       res = 0;
01516       /* if leaving batch mode, then post the CDRs in the batch,
01517          and don't reschedule, since we are stopping CDR logging */
01518       if (!batchmode && was_batchmode) {
01519          ast_cdr_engine_term();
01520       }
01521    } else {
01522       res = 0;
01523    }
01524 
01525    ast_mutex_unlock(&cdr_batch_lock);
01526    ast_config_destroy(config);
01527    manager_event(EVENT_FLAG_SYSTEM, "Reload", "Module: CDR\r\nMessage: CDR subsystem reload requested\r\n");
01528 
01529    return res;
01530 }
01531 
01532 int ast_cdr_engine_init(void)
01533 {
01534    int res;
01535 
01536    sched = sched_context_create();
01537    if (!sched) {
01538       ast_log(LOG_ERROR, "Unable to create schedule context.\n");
01539       return -1;
01540    }
01541 
01542    ast_cli_register(&cli_status);
01543 
01544    res = do_reload(0);
01545    if (res) {
01546       ast_mutex_lock(&cdr_batch_lock);
01547       res = init_batch();
01548       ast_mutex_unlock(&cdr_batch_lock);
01549    }
01550 
01551    return res;
01552 }
01553 
01554 /* \note This actually gets called a couple of times at shutdown.  Once, before we start
01555    hanging up channels, and then again, after the channel hangup timeout expires */
01556 void ast_cdr_engine_term(void)
01557 {
01558    ast_cdr_submit_batch(batchsafeshutdown);
01559 }
01560 
01561 int ast_cdr_engine_reload(void)
01562 {
01563    return do_reload(1);
01564 }
01565 

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