Fri Sep 25 19:28:06 2009

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: 89622 $")
00037 
00038 #include <unistd.h>
00039 #include <stdlib.h>
00040 #include <string.h>
00041 #include <stdio.h>
00042 #include <signal.h>
00043 
00044 #include "asterisk/lock.h"
00045 #include "asterisk/channel.h"
00046 #include "asterisk/cdr.h"
00047 #include "asterisk/logger.h"
00048 #include "asterisk/callerid.h"
00049 #include "asterisk/causes.h"
00050 #include "asterisk/options.h"
00051 #include "asterisk/linkedlists.h"
00052 #include "asterisk/utils.h"
00053 #include "asterisk/sched.h"
00054 #include "asterisk/config.h"
00055 #include "asterisk/cli.h"
00056 #include "asterisk/stringfields.h"
00057 
00058 /*! Default AMA flag for billing records (CDR's) */
00059 int ast_default_amaflags = AST_CDR_DOCUMENTATION;
00060 char ast_default_accountcode[AST_MAX_ACCOUNT_CODE];
00061 
00062 struct ast_cdr_beitem {
00063    char name[20];
00064    char desc[80];
00065    ast_cdrbe be;
00066    AST_LIST_ENTRY(ast_cdr_beitem) list;
00067 };
00068 
00069 static AST_LIST_HEAD_STATIC(be_list, ast_cdr_beitem);
00070 
00071 struct ast_cdr_batch_item {
00072    struct ast_cdr *cdr;
00073    struct ast_cdr_batch_item *next;
00074 };
00075 
00076 static struct ast_cdr_batch {
00077    int size;
00078    struct ast_cdr_batch_item *head;
00079    struct ast_cdr_batch_item *tail;
00080 } *batch = NULL;
00081 
00082 static struct sched_context *sched;
00083 static int cdr_sched = -1;
00084 static pthread_t cdr_thread = AST_PTHREADT_NULL;
00085 
00086 #define BATCH_SIZE_DEFAULT 100
00087 #define BATCH_TIME_DEFAULT 300
00088 #define BATCH_SCHEDULER_ONLY_DEFAULT 0
00089 #define BATCH_SAFE_SHUTDOWN_DEFAULT 1
00090 
00091 static int enabled;     /*! Is the CDR subsystem enabled ? */
00092 static int unanswered;
00093 static int batchmode;
00094 static int batchsize;
00095 static int batchtime;
00096 static int batchscheduleronly;
00097 static int batchsafeshutdown;
00098 
00099 AST_MUTEX_DEFINE_STATIC(cdr_batch_lock);
00100 
00101 /* these are used to wake up the CDR thread when there's work to do */
00102 AST_MUTEX_DEFINE_STATIC(cdr_pending_lock);
00103 static ast_cond_t cdr_pending_cond;
00104 
00105 
00106 int ast_cdr_log_unanswered(void)
00107 {
00108    return unanswered;
00109 }
00110 
00111 /*! Register a CDR driver. Each registered CDR driver generates a CDR 
00112    \return 0 on success, -1 on failure 
00113 */
00114 int ast_cdr_register(const char *name, const char *desc, ast_cdrbe be)
00115 {
00116    struct ast_cdr_beitem *i;
00117 
00118    if (!name)
00119       return -1;
00120    if (!be) {
00121       ast_log(LOG_WARNING, "CDR engine '%s' lacks backend\n", name);
00122       return -1;
00123    }
00124 
00125    AST_LIST_LOCK(&be_list);
00126    AST_LIST_TRAVERSE(&be_list, i, list) {
00127       if (!strcasecmp(name, i->name))
00128          break;
00129    }
00130    AST_LIST_UNLOCK(&be_list);
00131 
00132    if (i) {
00133       ast_log(LOG_WARNING, "Already have a CDR backend called '%s'\n", name);
00134       return -1;
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_LIST_LOCK(&be_list);
00145    AST_LIST_INSERT_HEAD(&be_list, i, list);
00146    AST_LIST_UNLOCK(&be_list);
00147 
00148    return 0;
00149 }
00150 
00151 /*! unregister a CDR driver */
00152 void ast_cdr_unregister(const char *name)
00153 {
00154    struct ast_cdr_beitem *i = NULL;
00155 
00156    AST_LIST_LOCK(&be_list);
00157    AST_LIST_TRAVERSE_SAFE_BEGIN(&be_list, i, list) {
00158       if (!strcasecmp(name, i->name)) {
00159          AST_LIST_REMOVE_CURRENT(&be_list, list);
00160          if (option_verbose > 1)
00161             ast_verbose(VERBOSE_PREFIX_2 "Unregistered '%s' CDR backend\n", name);
00162          free(i);
00163          break;
00164       }
00165    }
00166    AST_LIST_TRAVERSE_SAFE_END;
00167    AST_LIST_UNLOCK(&be_list);
00168 }
00169 
00170 /*! Duplicate a CDR record 
00171    \returns Pointer to new CDR record
00172 */
00173 struct ast_cdr *ast_cdr_dup(struct ast_cdr *cdr) 
00174 {
00175    struct ast_cdr *newcdr;
00176    
00177    if (!cdr) /* don't die if we get a null cdr pointer */
00178       return NULL;
00179    newcdr = ast_cdr_alloc();
00180    if (!newcdr)
00181       return NULL;
00182 
00183    memcpy(newcdr, cdr, sizeof(*newcdr));
00184    /* The varshead is unusable, volatile even, after the memcpy so we take care of that here */
00185    memset(&newcdr->varshead, 0, sizeof(newcdr->varshead));
00186    ast_cdr_copy_vars(newcdr, cdr);
00187    newcdr->next = NULL;
00188 
00189    return newcdr;
00190 }
00191 
00192 static const char *ast_cdr_getvar_internal(struct ast_cdr *cdr, const char *name, int recur) 
00193 {
00194    if (ast_strlen_zero(name))
00195       return NULL;
00196 
00197    for (; cdr; cdr = recur ? cdr->next : NULL) {
00198       struct ast_var_t *variables;
00199       struct varshead *headp = &cdr->varshead;
00200       AST_LIST_TRAVERSE(headp, variables, entries) {
00201          if (!strcasecmp(name, ast_var_name(variables)))
00202             return ast_var_value(variables);
00203       }
00204    }
00205 
00206    return NULL;
00207 }
00208 
00209 static void cdr_get_tv(struct timeval tv, const char *fmt, char *buf, int bufsize)
00210 {
00211    if (fmt == NULL) {   /* raw mode */
00212       snprintf(buf, bufsize, "%ld.%06ld", (long)tv.tv_sec, (long)tv.tv_usec);
00213    } else {  
00214       time_t t = tv.tv_sec;
00215       if (t) {
00216          struct tm tm;
00217 
00218          ast_localtime(&t, &tm, NULL);
00219          strftime(buf, bufsize, fmt, &tm);
00220       }
00221    }
00222 }
00223 
00224 /*! CDR channel variable retrieval */
00225 void ast_cdr_getvar(struct ast_cdr *cdr, const char *name, char **ret, char *workspace, int workspacelen, int recur, int raw) 
00226 {
00227    const char *fmt = "%Y-%m-%d %T";
00228    const char *varbuf;
00229 
00230    if (!cdr)  /* don't die if the cdr is null */
00231       return;
00232 
00233    *ret = NULL;
00234    /* special vars (the ones from the struct ast_cdr when requested by name) 
00235       I'd almost say we should convert all the stringed vals to vars */
00236 
00237    if (!strcasecmp(name, "clid"))
00238       ast_copy_string(workspace, cdr->clid, workspacelen);
00239    else if (!strcasecmp(name, "src"))
00240       ast_copy_string(workspace, cdr->src, workspacelen);
00241    else if (!strcasecmp(name, "dst"))
00242       ast_copy_string(workspace, cdr->dst, workspacelen);
00243    else if (!strcasecmp(name, "dcontext"))
00244       ast_copy_string(workspace, cdr->dcontext, workspacelen);
00245    else if (!strcasecmp(name, "channel"))
00246       ast_copy_string(workspace, cdr->channel, workspacelen);
00247    else if (!strcasecmp(name, "dstchannel"))
00248       ast_copy_string(workspace, cdr->dstchannel, workspacelen);
00249    else if (!strcasecmp(name, "lastapp"))
00250       ast_copy_string(workspace, cdr->lastapp, workspacelen);
00251    else if (!strcasecmp(name, "lastdata"))
00252       ast_copy_string(workspace, cdr->lastdata, workspacelen);
00253    else if (!strcasecmp(name, "start"))
00254       cdr_get_tv(cdr->start, raw ? NULL : fmt, workspace, workspacelen);
00255    else if (!strcasecmp(name, "answer"))
00256       cdr_get_tv(cdr->answer, raw ? NULL : fmt, workspace, workspacelen);
00257    else if (!strcasecmp(name, "end"))
00258       cdr_get_tv(cdr->end, raw ? NULL : fmt, workspace, workspacelen);
00259    else if (!strcasecmp(name, "duration"))
00260       snprintf(workspace, workspacelen, "%ld", cdr->duration);
00261    else if (!strcasecmp(name, "billsec"))
00262       snprintf(workspace, workspacelen, "%ld", cdr->billsec);
00263    else if (!strcasecmp(name, "disposition")) {
00264       if (raw) {
00265          snprintf(workspace, workspacelen, "%ld", cdr->disposition);
00266       } else {
00267          ast_copy_string(workspace, ast_cdr_disp2str(cdr->disposition), workspacelen);
00268       }
00269    } else if (!strcasecmp(name, "amaflags")) {
00270       if (raw) {
00271          snprintf(workspace, workspacelen, "%ld", cdr->amaflags);
00272       } else {
00273          ast_copy_string(workspace, ast_cdr_flags2str(cdr->amaflags), workspacelen);
00274       }
00275    } else if (!strcasecmp(name, "accountcode"))
00276       ast_copy_string(workspace, cdr->accountcode, workspacelen);
00277    else if (!strcasecmp(name, "uniqueid"))
00278       ast_copy_string(workspace, cdr->uniqueid, workspacelen);
00279    else if (!strcasecmp(name, "userfield"))
00280       ast_copy_string(workspace, cdr->userfield, workspacelen);
00281    else if ((varbuf = ast_cdr_getvar_internal(cdr, name, recur)))
00282       ast_copy_string(workspace, varbuf, workspacelen);
00283    else
00284       workspace[0] = '\0';
00285 
00286    if (!ast_strlen_zero(workspace))
00287       *ret = workspace;
00288 }
00289 
00290 /* readonly cdr variables */
00291 static   const char *cdr_readonly_vars[] = { "clid", "src", "dst", "dcontext", "channel", "dstchannel",
00292                 "lastapp", "lastdata", "start", "answer", "end", "duration",
00293                 "billsec", "disposition", "amaflags", "accountcode", "uniqueid",
00294                 "userfield", NULL };
00295 /*! Set a CDR channel variable 
00296    \note You can't set the CDR variables that belong to the actual CDR record, like "billsec".
00297 */
00298 int ast_cdr_setvar(struct ast_cdr *cdr, const char *name, const char *value, int recur) 
00299 {
00300    struct ast_var_t *newvariable;
00301    struct varshead *headp;
00302    int x;
00303    
00304    if (!cdr)  /* don't die if the cdr is null */
00305       return -1;
00306    
00307    for(x = 0; cdr_readonly_vars[x]; x++) {
00308       if (!strcasecmp(name, cdr_readonly_vars[x])) {
00309          ast_log(LOG_ERROR, "Attempt to set the '%s' read-only variable!.\n", name);
00310          return -1;
00311       }
00312    }
00313 
00314    if (!cdr) {
00315       ast_log(LOG_ERROR, "Attempt to set a variable on a nonexistent CDR record.\n");
00316       return -1;
00317    }
00318 
00319    for (; cdr; cdr = recur ? cdr->next : NULL) {
00320       if (!ast_test_flag(cdr, AST_CDR_FLAG_LOCKED)) {
00321          headp = &cdr->varshead;
00322          AST_LIST_TRAVERSE_SAFE_BEGIN(headp, newvariable, entries) {
00323             if (!strcasecmp(ast_var_name(newvariable), name)) {
00324                /* there is already such a variable, delete it */
00325                AST_LIST_REMOVE_CURRENT(headp, entries);
00326                ast_var_delete(newvariable);
00327                break;
00328             }
00329          }
00330          AST_LIST_TRAVERSE_SAFE_END;
00331 
00332          if (value) {
00333             newvariable = ast_var_assign(name, value);
00334             AST_LIST_INSERT_HEAD(headp, newvariable, entries);
00335          }
00336       }
00337    }
00338 
00339    return 0;
00340 }
00341 
00342 int ast_cdr_copy_vars(struct ast_cdr *to_cdr, struct ast_cdr *from_cdr)
00343 {
00344    struct ast_var_t *variables, *newvariable = NULL;
00345    struct varshead *headpa, *headpb;
00346    const char *var, *val;
00347    int x = 0;
00348 
00349    if (!to_cdr || !from_cdr) /* don't die if one of the pointers is null */
00350       return 0;
00351 
00352    headpa = &from_cdr->varshead;
00353    headpb = &to_cdr->varshead;
00354 
00355    AST_LIST_TRAVERSE(headpa,variables,entries) {
00356       if (variables &&
00357           (var = ast_var_name(variables)) && (val = ast_var_value(variables)) &&
00358           !ast_strlen_zero(var) && !ast_strlen_zero(val)) {
00359          newvariable = ast_var_assign(var, val);
00360          AST_LIST_INSERT_HEAD(headpb, newvariable, entries);
00361          x++;
00362       }
00363    }
00364 
00365    return x;
00366 }
00367 
00368 int ast_cdr_serialize_variables(struct ast_cdr *cdr, char *buf, size_t size, char delim, char sep, int recur) 
00369 {
00370    struct ast_var_t *variables;
00371    const char *var, *val;
00372    char *tmp;
00373    char workspace[256];
00374    int total = 0, x = 0, i;
00375 
00376    memset(buf, 0, size);
00377 
00378    for (; cdr; cdr = recur ? cdr->next : NULL) {
00379       if (++x > 1)
00380          ast_build_string(&buf, &size, "\n");
00381 
00382       AST_LIST_TRAVERSE(&cdr->varshead, variables, entries) {
00383          if (variables &&
00384              (var = ast_var_name(variables)) && (val = ast_var_value(variables)) &&
00385              !ast_strlen_zero(var) && !ast_strlen_zero(val)) {
00386             if (ast_build_string(&buf, &size, "level %d: %s%c%s%c", x, var, delim, val, sep)) {
00387                ast_log(LOG_ERROR, "Data Buffer Size Exceeded!\n");
00388                break;
00389             } else
00390                total++;
00391          } else 
00392             break;
00393       }
00394 
00395       for (i = 0; cdr_readonly_vars[i]; i++) {
00396          ast_cdr_getvar(cdr, cdr_readonly_vars[i], &tmp, workspace, sizeof(workspace), 0, 0);
00397          if (!tmp)
00398             continue;
00399          
00400          if (ast_build_string(&buf, &size, "level %d: %s%c%s%c", x, cdr_readonly_vars[i], delim, tmp, sep)) {
00401             ast_log(LOG_ERROR, "Data Buffer Size Exceeded!\n");
00402             break;
00403          } else
00404             total++;
00405       }
00406    }
00407 
00408    return total;
00409 }
00410 
00411 
00412 void ast_cdr_free_vars(struct ast_cdr *cdr, int recur)
00413 {
00414 
00415    /* clear variables */
00416    for (; cdr; cdr = recur ? cdr->next : NULL) {
00417       struct ast_var_t *vardata;
00418       struct varshead *headp = &cdr->varshead;
00419       while ((vardata = AST_LIST_REMOVE_HEAD(headp, entries)))
00420          ast_var_delete(vardata);
00421    }
00422 }
00423 
00424 /*! \brief  print a warning if cdr already posted */
00425 static void check_post(struct ast_cdr *cdr)
00426 {
00427    if (!cdr)
00428       return;
00429    if (ast_test_flag(cdr, AST_CDR_FLAG_POSTED))
00430       ast_log(LOG_NOTICE, "CDR on channel '%s' already posted\n", S_OR(cdr->channel, "<unknown>"));
00431 }
00432 
00433 void ast_cdr_free(struct ast_cdr *cdr)
00434 {
00435 
00436    while (cdr) {
00437       struct ast_cdr *next = cdr->next;
00438       char *chan = S_OR(cdr->channel, "<unknown>");
00439       if (!ast_test_flag(cdr, AST_CDR_FLAG_POSTED) && !ast_test_flag(cdr, AST_CDR_FLAG_POST_DISABLED))
00440          ast_log(LOG_NOTICE, "CDR on channel '%s' not posted\n", chan);
00441       if (ast_tvzero(cdr->end))
00442          ast_log(LOG_NOTICE, "CDR on channel '%s' lacks end\n", chan);
00443       if (ast_tvzero(cdr->start))
00444          ast_log(LOG_NOTICE, "CDR on channel '%s' lacks start\n", chan);
00445 
00446       ast_cdr_free_vars(cdr, 0);
00447       free(cdr);
00448       cdr = next;
00449    }
00450 }
00451 
00452 /*! \brief the same as a cdr_free call, only with no checks; just get rid of it */
00453 void ast_cdr_discard(struct ast_cdr *cdr)
00454 {
00455    while (cdr) {
00456       struct ast_cdr *next = cdr->next;
00457 
00458       ast_cdr_free_vars(cdr, 0);
00459       free(cdr);
00460       cdr = next;
00461    }
00462 }
00463 
00464 struct ast_cdr *ast_cdr_alloc(void)
00465 {
00466    struct ast_cdr *x = ast_calloc(1, sizeof(struct ast_cdr));
00467    if (!x)
00468       ast_log(LOG_ERROR,"Allocation Failure for a CDR!\n");
00469    return x;
00470 }
00471 
00472 static void cdr_merge_vars(struct ast_cdr *to, struct ast_cdr *from)
00473 {
00474    struct ast_var_t *variablesfrom,*variablesto;
00475    struct varshead *headpfrom = &to->varshead;
00476    struct varshead *headpto = &from->varshead;
00477    AST_LIST_TRAVERSE_SAFE_BEGIN(headpfrom, variablesfrom, entries) {
00478       /* for every var in from, stick it in to */
00479       const char *fromvarname = NULL, *fromvarval = NULL;
00480       const char *tovarname = NULL, *tovarval = NULL;
00481       fromvarname = ast_var_name(variablesfrom);
00482       fromvarval = ast_var_value(variablesfrom);
00483       tovarname = 0;
00484 
00485       /* now, quick see if that var is in the 'to' cdr already */
00486       AST_LIST_TRAVERSE(headpto, variablesto, entries) {
00487 
00488          /* now, quick see if that var is in the 'to' cdr already */
00489          if ( strcasecmp(fromvarname, ast_var_name(variablesto)) == 0 ) {
00490             tovarname = ast_var_name(variablesto);
00491             tovarval = ast_var_value(variablesto);
00492             break;
00493          }
00494       }
00495       if (tovarname && strcasecmp(fromvarval,tovarval) != 0) {  /* this message here to see how irritating the userbase finds it */
00496          ast_log(LOG_NOTICE, "Merging CDR's: variable %s value %s dropped in favor of value %s\n", tovarname, fromvarval, tovarval);
00497          continue;
00498       } else if (tovarname && strcasecmp(fromvarval,tovarval) == 0) /* if they are the same, the job is done */
00499          continue;
00500 
00501       /*rip this var out of the from cdr, and stick it in the to cdr */
00502       AST_LIST_REMOVE_CURRENT(headpfrom, entries);
00503       AST_LIST_INSERT_HEAD(headpto, variablesfrom, entries);
00504    }
00505    AST_LIST_TRAVERSE_SAFE_END;
00506 }
00507 
00508 void ast_cdr_merge(struct ast_cdr *to, struct ast_cdr *from)
00509 {
00510    struct ast_cdr *zcdr;
00511    struct ast_cdr *lto = NULL;
00512    struct ast_cdr *lfrom = NULL;
00513    int discard_from = 0;
00514    
00515    if (!to || !from)
00516       return;
00517 
00518    /* don't merge into locked CDR's -- it's bad business */
00519    if (ast_test_flag(to, AST_CDR_FLAG_LOCKED)) {
00520       zcdr = to; /* safety valve? */
00521       while (to->next) {
00522          lto = to;
00523          to = to->next;
00524       }
00525       
00526       if (ast_test_flag(to, AST_CDR_FLAG_LOCKED)) {
00527          ast_log(LOG_WARNING, "Merging into locked CDR... no choice.");
00528          to = zcdr; /* safety-- if all there are is locked CDR's, then.... ?? */
00529          lto = NULL;
00530       }
00531    }
00532 
00533    if (ast_test_flag(from, AST_CDR_FLAG_LOCKED)) {
00534       discard_from = 1;
00535       if (lto) {
00536          struct ast_cdr *llfrom = NULL;
00537          /* insert the from stuff after lto */
00538          lto->next = from;
00539          lfrom = from;
00540          while (lfrom && lfrom->next) {
00541             if (!lfrom->next->next)
00542                llfrom = lfrom;
00543             lfrom = lfrom->next; 
00544          }
00545          /* rip off the last entry and put a copy of the to at the end */
00546          llfrom->next = to;
00547          from = lfrom;
00548       } else {
00549          /* save copy of the current *to cdr */
00550          struct ast_cdr tcdr;
00551          struct ast_cdr *llfrom = NULL;
00552          memcpy(&tcdr, to, sizeof(tcdr));
00553          /* copy in the locked from cdr */
00554          memcpy(to, from, sizeof(*to));
00555          lfrom = from;
00556          while (lfrom && lfrom->next) {
00557             if (!lfrom->next->next)
00558                llfrom = lfrom;
00559             lfrom = lfrom->next; 
00560          }
00561          from->next = NULL;
00562          /* rip off the last entry and put a copy of the to at the end */
00563          if (llfrom == from)
00564             to = to->next = ast_cdr_dup(&tcdr);
00565          else
00566             to = llfrom->next = ast_cdr_dup(&tcdr);
00567          from = lfrom;
00568       }
00569    }
00570    
00571    if (!ast_tvzero(from->start)) {
00572       if (!ast_tvzero(to->start)) {
00573          if (ast_tvcmp(to->start, from->start) > 0 ) {
00574             to->start = from->start; /* use the earliest time */
00575             from->start = ast_tv(0,0); /* we actively "steal" these values */
00576          }
00577          /* else nothing to do */
00578       } else {
00579          to->start = from->start;
00580          from->start = ast_tv(0,0); /* we actively "steal" these values */
00581       }
00582    }
00583    if (!ast_tvzero(from->answer)) {
00584       if (!ast_tvzero(to->answer)) {
00585          if (ast_tvcmp(to->answer, from->answer) > 0 ) {
00586             to->answer = from->answer; /* use the earliest time */
00587             from->answer = ast_tv(0,0); /* we actively "steal" these values */
00588          }
00589          /* we got the earliest answer time, so we'll settle for that? */
00590       } else {
00591          to->answer = from->answer;
00592          from->answer = ast_tv(0,0); /* we actively "steal" these values */
00593       }
00594    }
00595    if (!ast_tvzero(from->end)) {
00596       if (!ast_tvzero(to->end)) {
00597          if (ast_tvcmp(to->end, from->end) < 0 ) {
00598             to->end = from->end; /* use the latest time */
00599             from->end = ast_tv(0,0); /* we actively "steal" these values */
00600             to->duration = to->end.tv_sec - to->start.tv_sec;  /* don't forget to update the duration, billsec, when we set end */
00601             to->billsec = ast_tvzero(to->answer) ? 0 : to->end.tv_sec - to->answer.tv_sec;
00602          }
00603          /* else, nothing to do */
00604       } else {
00605          to->end = from->end;
00606          from->end = ast_tv(0,0); /* we actively "steal" these values */
00607          to->duration = to->end.tv_sec - to->start.tv_sec;
00608          to->billsec = ast_tvzero(to->answer) ? 0 : to->end.tv_sec - to->answer.tv_sec;
00609       }
00610    }
00611    if (to->disposition < from->disposition) {
00612       to->disposition = from->disposition;
00613       from->disposition = AST_CDR_NOANSWER;
00614    }
00615    if (ast_strlen_zero(to->lastapp) && !ast_strlen_zero(from->lastapp)) {
00616       ast_copy_string(to->lastapp, from->lastapp, sizeof(to->lastapp));
00617       from->lastapp[0] = 0; /* theft */
00618    }
00619    if (ast_strlen_zero(to->lastdata) && !ast_strlen_zero(from->lastdata)) {
00620       ast_copy_string(to->lastdata, from->lastdata, sizeof(to->lastdata));
00621       from->lastdata[0] = 0; /* theft */
00622    }
00623    if (ast_strlen_zero(to->dcontext) && !ast_strlen_zero(from->dcontext)) {
00624       ast_copy_string(to->dcontext, from->dcontext, sizeof(to->dcontext));
00625       from->dcontext[0] = 0; /* theft */
00626    }
00627    if (ast_strlen_zero(to->dstchannel) && !ast_strlen_zero(from->dstchannel)) {
00628       ast_copy_string(to->dstchannel, from->dstchannel, sizeof(to->dstchannel));
00629       from->dstchannel[0] = 0; /* theft */
00630    }
00631    if (!ast_strlen_zero(from->channel) && (ast_strlen_zero(to->channel) || !strncasecmp(from->channel, "Agent/", 6))) {
00632       ast_copy_string(to->channel, from->channel, sizeof(to->channel));
00633       from->channel[0] = 0; /* theft */
00634    }
00635    if (ast_strlen_zero(to->src) && !ast_strlen_zero(from->src)) {
00636       ast_copy_string(to->src, from->src, sizeof(to->src));
00637       from->src[0] = 0; /* theft */
00638    }
00639    if (ast_strlen_zero(to->clid) && !ast_strlen_zero(from->clid)) {
00640       ast_copy_string(to->clid, from->clid, sizeof(to->clid));
00641       from->clid[0] = 0; /* theft */
00642    }
00643    if (ast_strlen_zero(to->dst) && !ast_strlen_zero(from->dst)) {
00644       ast_copy_string(to->dst, from->dst, sizeof(to->dst));
00645       from->dst[0] = 0; /* theft */
00646    }
00647    if (!to->amaflags)
00648       to->amaflags = AST_CDR_DOCUMENTATION;
00649    if (!from->amaflags)
00650       from->amaflags = AST_CDR_DOCUMENTATION; /* make sure both amaflags are set to something (DOC is default) */
00651    if (ast_test_flag(from, AST_CDR_FLAG_LOCKED) || (to->amaflags == AST_CDR_DOCUMENTATION && from->amaflags != AST_CDR_DOCUMENTATION)) {
00652       to->amaflags = from->amaflags;
00653    }
00654    if (ast_test_flag(from, AST_CDR_FLAG_LOCKED) || (ast_strlen_zero(to->accountcode) && !ast_strlen_zero(from->accountcode))) {
00655       ast_copy_string(to->accountcode, from->accountcode, sizeof(to->accountcode));
00656    }
00657    if (ast_test_flag(from, AST_CDR_FLAG_LOCKED) || (ast_strlen_zero(to->userfield) && !ast_strlen_zero(from->userfield))) {
00658       ast_copy_string(to->userfield, from->userfield, sizeof(to->userfield));
00659    }
00660    /* flags, varsead, ? */
00661    cdr_merge_vars(from, to);
00662 
00663    if (ast_test_flag(from, AST_CDR_FLAG_KEEP_VARS))
00664       ast_set_flag(to, AST_CDR_FLAG_KEEP_VARS);
00665    if (ast_test_flag(from, AST_CDR_FLAG_POSTED))
00666       ast_set_flag(to, AST_CDR_FLAG_POSTED);
00667    if (ast_test_flag(from, AST_CDR_FLAG_LOCKED))
00668       ast_set_flag(to, AST_CDR_FLAG_LOCKED);
00669    if (ast_test_flag(from, AST_CDR_FLAG_CHILD))
00670       ast_set_flag(to, AST_CDR_FLAG_CHILD);
00671    if (ast_test_flag(from, AST_CDR_FLAG_POST_DISABLED))
00672       ast_set_flag(to, AST_CDR_FLAG_POST_DISABLED);
00673 
00674    /* last, but not least, we need to merge any forked CDRs to the 'to' cdr */
00675    while (from->next) {
00676       /* just rip 'em off the 'from' and insert them on the 'to' */
00677       zcdr = from->next;
00678       from->next = zcdr->next;
00679       zcdr->next = NULL;
00680       /* zcdr is now ripped from the current list; */
00681       ast_cdr_append(to, zcdr);
00682    }
00683    if (discard_from)
00684       ast_cdr_discard(from);
00685 }
00686 
00687 void ast_cdr_start(struct ast_cdr *cdr)
00688 {
00689    char *chan; 
00690 
00691    for (; cdr; cdr = cdr->next) {
00692       if (!ast_test_flag(cdr, AST_CDR_FLAG_LOCKED)) {
00693          chan = S_OR(cdr->channel, "<unknown>");
00694          check_post(cdr);
00695          cdr->start = ast_tvnow();
00696       }
00697    }
00698 }
00699 
00700 void ast_cdr_answer(struct ast_cdr *cdr)
00701 {
00702 
00703    for (; cdr; cdr = cdr->next) {
00704       if (!ast_test_flag(cdr, AST_CDR_FLAG_LOCKED)) {
00705          check_post(cdr);
00706          if (cdr->disposition < AST_CDR_ANSWERED)
00707             cdr->disposition = AST_CDR_ANSWERED;
00708          if (ast_tvzero(cdr->answer))
00709             cdr->answer = ast_tvnow();
00710       }
00711    }
00712 }
00713 
00714 void ast_cdr_busy(struct ast_cdr *cdr)
00715 {
00716 
00717    for (; cdr; cdr = cdr->next) {
00718       if (!ast_test_flag(cdr, AST_CDR_FLAG_LOCKED)) {
00719          check_post(cdr);
00720          if (cdr->disposition < AST_CDR_BUSY)
00721             cdr->disposition = AST_CDR_BUSY;
00722       }
00723    }
00724 }
00725 
00726 void ast_cdr_failed(struct ast_cdr *cdr)
00727 {
00728    for (; cdr; cdr = cdr->next) {
00729       check_post(cdr);
00730       if (!ast_test_flag(cdr, AST_CDR_FLAG_LOCKED)) {
00731          if (cdr->disposition < AST_CDR_FAILED)
00732             cdr->disposition = AST_CDR_FAILED;
00733       }
00734    }
00735 }
00736 
00737 void ast_cdr_noanswer(struct ast_cdr *cdr)
00738 {
00739    char *chan; 
00740 
00741    while (cdr) {
00742       chan = !ast_strlen_zero(cdr->channel) ? cdr->channel : "<unknown>";
00743       if (ast_test_flag(cdr, AST_CDR_FLAG_POSTED))
00744          ast_log(LOG_WARNING, "CDR on channel '%s' already posted\n", chan);
00745       if (!ast_test_flag(cdr, AST_CDR_FLAG_LOCKED)) {
00746          if (cdr->disposition < AST_CDR_NOANSWER)
00747             cdr->disposition = AST_CDR_NOANSWER;
00748       }
00749       cdr = cdr->next;
00750    }
00751 }
00752 
00753 /* everywhere ast_cdr_disposition is called, it will call ast_cdr_failed() 
00754    if ast_cdr_disposition returns a non-zero value */
00755 
00756 int ast_cdr_disposition(struct ast_cdr *cdr, int cause)
00757 {
00758    int res = 0;
00759 
00760    for (; cdr; cdr = cdr->next) {
00761       switch(cause) {  /* handle all the non failure, busy cases, return 0 not to set disposition,
00762                      return -1 to set disposition to FAILED */
00763       case AST_CAUSE_BUSY:
00764          ast_cdr_busy(cdr);
00765          break;
00766       case AST_CAUSE_NORMAL:
00767          break;
00768       default:
00769          res = -1;
00770       }
00771    }
00772    return res;
00773 }
00774 
00775 void ast_cdr_setdestchan(struct ast_cdr *cdr, const char *chann)
00776 {
00777    for (; cdr; cdr = cdr->next) {
00778       check_post(cdr);
00779       if (!ast_test_flag(cdr, AST_CDR_FLAG_LOCKED))
00780          ast_copy_string(cdr->dstchannel, chann, sizeof(cdr->dstchannel));
00781    }
00782 }
00783 
00784 void ast_cdr_setapp(struct ast_cdr *cdr, char *app, char *data)
00785 {
00786 
00787    for (; cdr; cdr = cdr->next) {
00788       if (!ast_test_flag(cdr, AST_CDR_FLAG_LOCKED)) {
00789          check_post(cdr);
00790          if (!app)
00791             app = "";
00792          ast_copy_string(cdr->lastapp, app, sizeof(cdr->lastapp));
00793          if (!data)
00794             data = "";
00795          ast_copy_string(cdr->lastdata, data, sizeof(cdr->lastdata));
00796       }
00797    }
00798 }
00799 
00800 /* set cid info for one record */
00801 static void set_one_cid(struct ast_cdr *cdr, struct ast_channel *c)
00802 {
00803    /* Grab source from ANI or normal Caller*ID */
00804    const char *num = S_OR(c->cid.cid_ani, c->cid.cid_num);
00805    if (!cdr)
00806       return;
00807    if (!ast_strlen_zero(c->cid.cid_name)) {
00808       if (!ast_strlen_zero(num)) /* both name and number */
00809          snprintf(cdr->clid, sizeof(cdr->clid), "\"%s\" <%s>", c->cid.cid_name, num);
00810       else           /* only name */
00811          ast_copy_string(cdr->clid, c->cid.cid_name, sizeof(cdr->clid));
00812    } else if (!ast_strlen_zero(num)) { /* only number */
00813       ast_copy_string(cdr->clid, num, sizeof(cdr->clid));
00814    } else {          /* nothing known */
00815       cdr->clid[0] = '\0';
00816    }
00817    ast_copy_string(cdr->src, S_OR(num, ""), sizeof(cdr->src));
00818 
00819 }
00820 int ast_cdr_setcid(struct ast_cdr *cdr, struct ast_channel *c)
00821 {
00822    for (; cdr; cdr = cdr->next) {
00823       if (!ast_test_flag(cdr, AST_CDR_FLAG_LOCKED))
00824          set_one_cid(cdr, c);
00825    }
00826    return 0;
00827 }
00828 
00829 int ast_cdr_init(struct ast_cdr *cdr, struct ast_channel *c)
00830 {
00831    char *chan;
00832 
00833    for ( ; cdr ; cdr = cdr->next) {
00834       if (!ast_test_flag(cdr, AST_CDR_FLAG_LOCKED)) {
00835          chan = S_OR(cdr->channel, "<unknown>");
00836          ast_copy_string(cdr->channel, c->name, sizeof(cdr->channel));
00837          set_one_cid(cdr, c);
00838 
00839          cdr->disposition = (c->_state == AST_STATE_UP) ?  AST_CDR_ANSWERED : AST_CDR_NULL;
00840          cdr->amaflags = c->amaflags ? c->amaflags :  ast_default_amaflags;
00841          ast_copy_string(cdr->accountcode, c->accountcode, sizeof(cdr->accountcode));
00842          /* Destination information */
00843          ast_copy_string(cdr->dst, S_OR(c->macroexten,c->exten), sizeof(cdr->dst));
00844          ast_copy_string(cdr->dcontext, S_OR(c->macrocontext,c->context), sizeof(cdr->dcontext));
00845          /* Unique call identifier */
00846          ast_copy_string(cdr->uniqueid, c->uniqueid, sizeof(cdr->uniqueid));
00847       }
00848    }
00849    return 0;
00850 }
00851 
00852 void ast_cdr_end(struct ast_cdr *cdr)
00853 {
00854    for ( ; cdr ; cdr = cdr->next) {
00855       if (!ast_test_flag(cdr, AST_CDR_FLAG_LOCKED)) {
00856          check_post(cdr);
00857          if (ast_tvzero(cdr->end))
00858             cdr->end = ast_tvnow();
00859          if (ast_tvzero(cdr->start)) {
00860             ast_log(LOG_WARNING, "CDR on channel '%s' has not started\n", S_OR(cdr->channel, "<unknown>"));
00861             cdr->disposition = AST_CDR_FAILED;
00862          } else
00863             cdr->duration = cdr->end.tv_sec - cdr->start.tv_sec;
00864          cdr->billsec = ast_tvzero(cdr->answer) ? 0 : cdr->end.tv_sec - cdr->answer.tv_sec;
00865       }
00866    }
00867 }
00868 
00869 char *ast_cdr_disp2str(int disposition)
00870 {
00871    switch (disposition) {
00872    case AST_CDR_NULL:
00873       return "NO ANSWER"; /* by default, for backward compatibility */
00874    case AST_CDR_NOANSWER:
00875       return "NO ANSWER";
00876    case AST_CDR_FAILED:
00877       return "FAILED";     
00878    case AST_CDR_BUSY:
00879       return "BUSY";    
00880    case AST_CDR_ANSWERED:
00881       return "ANSWERED";
00882    }
00883    return "UNKNOWN";
00884 }
00885 
00886 /*! Converts AMA flag to printable string */
00887 char *ast_cdr_flags2str(int flag)
00888 {
00889    switch(flag) {
00890    case AST_CDR_OMIT:
00891       return "OMIT";
00892    case AST_CDR_BILLING:
00893       return "BILLING";
00894    case AST_CDR_DOCUMENTATION:
00895       return "DOCUMENTATION";
00896    }
00897    return "Unknown";
00898 }
00899 
00900 int ast_cdr_setaccount(struct ast_channel *chan, const char *account)
00901 {
00902    struct ast_cdr *cdr = chan->cdr;
00903 
00904    ast_string_field_set(chan, accountcode, account);
00905    for ( ; cdr ; cdr = cdr->next) {
00906       if (!ast_test_flag(cdr, AST_CDR_FLAG_LOCKED)) {
00907          ast_copy_string(cdr->accountcode, chan->accountcode, sizeof(cdr->accountcode));
00908       }
00909    }
00910    return 0;
00911 }
00912 
00913 int ast_cdr_setamaflags(struct ast_channel *chan, const char *flag)
00914 {
00915    struct ast_cdr *cdr;
00916    int newflag = ast_cdr_amaflags2int(flag);
00917    if (newflag) {
00918       for (cdr = chan->cdr; cdr; cdr = cdr->next) {
00919          if (!ast_test_flag(cdr, AST_CDR_FLAG_LOCKED)) {
00920             cdr->amaflags = newflag;
00921          }
00922       }
00923    }
00924 
00925    return 0;
00926 }
00927 
00928 int ast_cdr_setuserfield(struct ast_channel *chan, const char *userfield)
00929 {
00930    struct ast_cdr *cdr = chan->cdr;
00931 
00932    for ( ; cdr ; cdr = cdr->next) {
00933       if (!ast_test_flag(cdr, AST_CDR_FLAG_LOCKED)) 
00934          ast_copy_string(cdr->userfield, userfield, sizeof(cdr->userfield));
00935    }
00936 
00937    return 0;
00938 }
00939 
00940 int ast_cdr_appenduserfield(struct ast_channel *chan, const char *userfield)
00941 {
00942    struct ast_cdr *cdr = chan->cdr;
00943 
00944    for ( ; cdr ; cdr = cdr->next) {
00945       int len = strlen(cdr->userfield);
00946 
00947       if (!ast_test_flag(cdr, AST_CDR_FLAG_LOCKED))
00948          ast_copy_string(cdr->userfield + len, userfield, sizeof(cdr->userfield) - len);
00949    }
00950 
00951    return 0;
00952 }
00953 
00954 int ast_cdr_update(struct ast_channel *c)
00955 {
00956    struct ast_cdr *cdr = c->cdr;
00957 
00958    for ( ; cdr ; cdr = cdr->next) {
00959       if (!ast_test_flag(cdr, AST_CDR_FLAG_LOCKED)) {
00960          set_one_cid(cdr, c);
00961 
00962          /* Copy account code et-al */ 
00963          ast_copy_string(cdr->accountcode, c->accountcode, sizeof(cdr->accountcode));
00964          
00965          /* Destination information */ /* XXX privilege macro* ? */
00966          ast_copy_string(cdr->dst, S_OR(c->macroexten, c->exten), sizeof(cdr->dst));
00967          ast_copy_string(cdr->dcontext, S_OR(c->macrocontext, c->context), sizeof(cdr->dcontext));
00968       }
00969    }
00970 
00971    return 0;
00972 }
00973 
00974 int ast_cdr_amaflags2int(const char *flag)
00975 {
00976    if (!strcasecmp(flag, "default"))
00977       return 0;
00978    if (!strcasecmp(flag, "omit"))
00979       return AST_CDR_OMIT;
00980    if (!strcasecmp(flag, "billing"))
00981       return AST_CDR_BILLING;
00982    if (!strcasecmp(flag, "documentation"))
00983       return AST_CDR_DOCUMENTATION;
00984    return -1;
00985 }
00986 
00987 static void post_cdr(struct ast_cdr *cdr)
00988 {
00989    char *chan;
00990    struct ast_cdr_beitem *i;
00991 
00992    for ( ; cdr ; cdr = cdr->next) {
00993       chan = S_OR(cdr->channel, "<unknown>");
00994       check_post(cdr);
00995       if (ast_tvzero(cdr->end))
00996          ast_log(LOG_WARNING, "CDR on channel '%s' lacks end\n", chan);
00997       if (ast_tvzero(cdr->start))
00998          ast_log(LOG_WARNING, "CDR on channel '%s' lacks start\n", chan);
00999       ast_set_flag(cdr, AST_CDR_FLAG_POSTED);
01000       if (ast_test_flag(cdr, AST_CDR_FLAG_POST_DISABLED))
01001          continue;
01002       AST_LIST_LOCK(&be_list);
01003       AST_LIST_TRAVERSE(&be_list, i, list) {
01004          i->be(cdr);
01005       }
01006       AST_LIST_UNLOCK(&be_list);
01007    }
01008 }
01009 
01010 void ast_cdr_reset(struct ast_cdr *cdr, struct ast_flags *_flags)
01011 {
01012    struct ast_cdr *dup;
01013    struct ast_flags flags = { 0 };
01014 
01015    if (_flags)
01016       ast_copy_flags(&flags, _flags, AST_FLAGS_ALL);
01017 
01018    for ( ; cdr ; cdr = cdr->next) {
01019       /* Detach if post is requested */
01020       if (ast_test_flag(&flags, AST_CDR_FLAG_LOCKED) || !ast_test_flag(cdr, AST_CDR_FLAG_LOCKED)) {
01021          if (ast_test_flag(&flags, AST_CDR_FLAG_POSTED)) {
01022             ast_cdr_end(cdr);
01023             if ((dup = ast_cdr_dup(cdr))) {
01024                ast_cdr_detach(dup);
01025             }
01026             ast_set_flag(cdr, AST_CDR_FLAG_POSTED);
01027          }
01028 
01029          /* clear variables */
01030          if (!ast_test_flag(&flags, AST_CDR_FLAG_KEEP_VARS)) {
01031             ast_cdr_free_vars(cdr, 0);
01032          }
01033 
01034          /* Reset to initial state */
01035          ast_clear_flag(cdr, AST_FLAGS_ALL); 
01036          memset(&cdr->start, 0, sizeof(cdr->start));
01037          memset(&cdr->end, 0, sizeof(cdr->end));
01038          memset(&cdr->answer, 0, sizeof(cdr->answer));
01039          cdr->billsec = 0;
01040          cdr->duration = 0;
01041          ast_cdr_start(cdr);
01042          cdr->disposition = AST_CDR_NULL;
01043       }
01044    }
01045 }
01046 
01047 struct ast_cdr *ast_cdr_append(struct ast_cdr *cdr, struct ast_cdr *newcdr) 
01048 {
01049    struct ast_cdr *ret;
01050 
01051    if (cdr) {
01052       ret = cdr;
01053 
01054       while (cdr->next)
01055          cdr = cdr->next;
01056       cdr->next = newcdr;
01057    } else {
01058       ret = newcdr;
01059    }
01060 
01061    return ret;
01062 }
01063 
01064 /*! \note Don't call without cdr_batch_lock */
01065 static void reset_batch(void)
01066 {
01067    batch->size = 0;
01068    batch->head = NULL;
01069    batch->tail = NULL;
01070 }
01071 
01072 /*! \note Don't call without cdr_batch_lock */
01073 static int init_batch(void)
01074 {
01075    /* This is the single meta-batch used to keep track of all CDRs during the entire life of the program */
01076    if (!(batch = ast_malloc(sizeof(*batch))))
01077       return -1;
01078 
01079    reset_batch();
01080 
01081    return 0;
01082 }
01083 
01084 static void *do_batch_backend_process(void *data)
01085 {
01086    struct ast_cdr_batch_item *processeditem;
01087    struct ast_cdr_batch_item *batchitem = data;
01088 
01089    /* Push each CDR into storage mechanism(s) and free all the memory */
01090    while (batchitem) {
01091       post_cdr(batchitem->cdr);
01092       ast_cdr_free(batchitem->cdr);
01093       processeditem = batchitem;
01094       batchitem = batchitem->next;
01095       free(processeditem);
01096    }
01097 
01098    return NULL;
01099 }
01100 
01101 void ast_cdr_submit_batch(int shutdown)
01102 {
01103    struct ast_cdr_batch_item *oldbatchitems = NULL;
01104    pthread_attr_t attr;
01105    pthread_t batch_post_thread = AST_PTHREADT_NULL;
01106 
01107    /* if there's no batch, or no CDRs in the batch, then there's nothing to do */
01108    if (!batch || !batch->head)
01109       return;
01110 
01111    /* move the old CDRs aside, and prepare a new CDR batch */
01112    ast_mutex_lock(&cdr_batch_lock);
01113    oldbatchitems = batch->head;
01114    reset_batch();
01115    ast_mutex_unlock(&cdr_batch_lock);
01116 
01117    /* if configured, spawn a new thread to post these CDRs,
01118       also try to save as much as possible if we are shutting down safely */
01119    if (batchscheduleronly || shutdown) {
01120       if (option_debug)
01121          ast_log(LOG_DEBUG, "CDR single-threaded batch processing begins now\n");
01122       do_batch_backend_process(oldbatchitems);
01123    } else {
01124       pthread_attr_init(&attr);
01125       pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED);
01126       if (ast_pthread_create_background(&batch_post_thread, &attr, do_batch_backend_process, oldbatchitems)) {
01127          ast_log(LOG_WARNING, "CDR processing thread could not detach, now trying in this thread\n");
01128          do_batch_backend_process(oldbatchitems);
01129       } else {
01130          if (option_debug)
01131             ast_log(LOG_DEBUG, "CDR multi-threaded batch processing begins now\n");
01132       }
01133       pthread_attr_destroy(&attr);
01134    }
01135 }
01136 
01137 static int submit_scheduled_batch(const void *data)
01138 {
01139    ast_cdr_submit_batch(0);
01140    /* manually reschedule from this point in time */
01141    cdr_sched = ast_sched_add(sched, batchtime * 1000, submit_scheduled_batch, NULL);
01142    /* returning zero so the scheduler does not automatically reschedule */
01143    return 0;
01144 }
01145 
01146 static void submit_unscheduled_batch(void)
01147 {
01148    /* this is okay since we are not being called from within the scheduler */
01149    if (cdr_sched > -1)
01150       ast_sched_del(sched, cdr_sched);
01151    /* schedule the submission to occur ASAP (1 ms) */
01152    cdr_sched = ast_sched_add(sched, 1, submit_scheduled_batch, NULL);
01153    /* signal the do_cdr thread to wakeup early and do some work (that lazy thread ;) */
01154    ast_mutex_lock(&cdr_pending_lock);
01155    ast_cond_signal(&cdr_pending_cond);
01156    ast_mutex_unlock(&cdr_pending_lock);
01157 }
01158 
01159 void ast_cdr_detach(struct ast_cdr *cdr)
01160 {
01161    struct ast_cdr_batch_item *newtail;
01162    int curr;
01163 
01164    if (!cdr)
01165       return;
01166 
01167    /* maybe they disabled CDR stuff completely, so just drop it */
01168    if (!enabled) {
01169       if (option_debug)
01170          ast_log(LOG_DEBUG, "Dropping CDR !\n");
01171       ast_set_flag(cdr, AST_CDR_FLAG_POST_DISABLED);
01172       ast_cdr_free(cdr);
01173       return;
01174    }
01175 
01176    /* post stuff immediately if we are not in batch mode, this is legacy behaviour */
01177    if (!batchmode) {
01178       post_cdr(cdr);
01179       ast_cdr_free(cdr);
01180       return;
01181    }
01182 
01183    /* otherwise, each CDR gets put into a batch list (at the end) */
01184    if (option_debug)
01185       ast_log(LOG_DEBUG, "CDR detaching from this thread\n");
01186 
01187    /* we'll need a new tail for every CDR */
01188    if (!(newtail = ast_calloc(1, sizeof(*newtail)))) {
01189       post_cdr(cdr);
01190       ast_cdr_free(cdr);
01191       return;
01192    }
01193 
01194    /* don't traverse a whole list (just keep track of the tail) */
01195    ast_mutex_lock(&cdr_batch_lock);
01196    if (!batch)
01197       init_batch();
01198    if (!batch->head) {
01199       /* new batch is empty, so point the head at the new tail */
01200       batch->head = newtail;
01201    } else {
01202       /* already got a batch with something in it, so just append a new tail */
01203       batch->tail->next = newtail;
01204    }
01205    newtail->cdr = cdr;
01206    batch->tail = newtail;
01207    curr = batch->size++;
01208    ast_mutex_unlock(&cdr_batch_lock);
01209 
01210    /* if we have enough stuff to post, then do it */
01211    if (curr >= (batchsize - 1))
01212       submit_unscheduled_batch();
01213 }
01214 
01215 static void *do_cdr(void *data)
01216 {
01217    struct timespec timeout;
01218    int schedms;
01219    int numevents = 0;
01220 
01221    for(;;) {
01222       struct timeval now;
01223       schedms = ast_sched_wait(sched);
01224       /* this shouldn't happen, but provide a 1 second default just in case */
01225       if (schedms <= 0)
01226          schedms = 1000;
01227       now = ast_tvadd(ast_tvnow(), ast_samp2tv(schedms, 1000));
01228       timeout.tv_sec = now.tv_sec;
01229       timeout.tv_nsec = now.tv_usec * 1000;
01230       /* prevent stuff from clobbering cdr_pending_cond, then wait on signals sent to it until the timeout expires */
01231       ast_mutex_lock(&cdr_pending_lock);
01232       ast_cond_timedwait(&cdr_pending_cond, &cdr_pending_lock, &timeout);
01233       numevents = ast_sched_runq(sched);
01234       ast_mutex_unlock(&cdr_pending_lock);
01235       if (option_debug > 1)
01236          ast_log(LOG_DEBUG, "Processed %d scheduled CDR batches from the run queue\n", numevents);
01237    }
01238 
01239    return NULL;
01240 }
01241 
01242 static int handle_cli_status(int fd, int argc, char *argv[])
01243 {
01244    struct ast_cdr_beitem *beitem=NULL;
01245    int cnt=0;
01246    long nextbatchtime=0;
01247 
01248    if (argc > 2)
01249       return RESULT_SHOWUSAGE;
01250 
01251    ast_cli(fd, "CDR logging: %s\n", enabled ? "enabled" : "disabled");
01252    ast_cli(fd, "CDR mode: %s\n", batchmode ? "batch" : "simple");
01253    if (enabled) {
01254       ast_cli(fd, "CDR output unanswered calls: %s\n", unanswered ? "yes" : "no");
01255       if (batchmode) {
01256          if (batch)
01257             cnt = batch->size;
01258          if (cdr_sched > -1)
01259             nextbatchtime = ast_sched_when(sched, cdr_sched);
01260          ast_cli(fd, "CDR safe shut down: %s\n", batchsafeshutdown ? "enabled" : "disabled");
01261          ast_cli(fd, "CDR batch threading model: %s\n", batchscheduleronly ? "scheduler only" : "scheduler plus separate threads");
01262          ast_cli(fd, "CDR current batch size: %d record%s\n", cnt, (cnt != 1) ? "s" : "");
01263          ast_cli(fd, "CDR maximum batch size: %d record%s\n", batchsize, (batchsize != 1) ? "s" : "");
01264          ast_cli(fd, "CDR maximum batch time: %d second%s\n", batchtime, (batchtime != 1) ? "s" : "");
01265          ast_cli(fd, "CDR next scheduled batch processing time: %ld second%s\n", nextbatchtime, (nextbatchtime != 1) ? "s" : "");
01266       }
01267       AST_LIST_LOCK(&be_list);
01268       AST_LIST_TRAVERSE(&be_list, beitem, list) {
01269          ast_cli(fd, "CDR registered backend: %s\n", beitem->name);
01270       }
01271       AST_LIST_UNLOCK(&be_list);
01272    }
01273 
01274    return 0;
01275 }
01276 
01277 static int handle_cli_submit(int fd, int argc, char *argv[])
01278 {
01279    if (argc > 2)
01280       return RESULT_SHOWUSAGE;
01281 
01282    submit_unscheduled_batch();
01283    ast_cli(fd, "Submitted CDRs to backend engines for processing.  This may take a while.\n");
01284 
01285    return 0;
01286 }
01287 
01288 static struct ast_cli_entry cli_submit = {
01289    { "cdr", "submit", NULL },
01290    handle_cli_submit, "Posts all pending batched CDR data",
01291    "Usage: cdr submit\n"
01292    "       Posts all pending batched CDR data to the configured CDR backend engine modules.\n"
01293 };
01294 
01295 static struct ast_cli_entry cli_status = {
01296    { "cdr", "status", NULL },
01297    handle_cli_status, "Display the CDR status",
01298    "Usage: cdr status\n"
01299    "  Displays the Call Detail Record engine system status.\n"
01300 };
01301 
01302 static int do_reload(void)
01303 {
01304    struct ast_config *config;
01305    const char *enabled_value;
01306    const char *unanswered_value;
01307    const char *batched_value;
01308    const char *scheduleronly_value;
01309    const char *batchsafeshutdown_value;
01310    const char *size_value;
01311    const char *time_value;
01312    const char *end_before_h_value;
01313    int cfg_size;
01314    int cfg_time;
01315    int was_enabled;
01316    int was_batchmode;
01317    int res=0;
01318 
01319    ast_mutex_lock(&cdr_batch_lock);
01320 
01321    batchsize = BATCH_SIZE_DEFAULT;
01322    batchtime = BATCH_TIME_DEFAULT;
01323    batchscheduleronly = BATCH_SCHEDULER_ONLY_DEFAULT;
01324    batchsafeshutdown = BATCH_SAFE_SHUTDOWN_DEFAULT;
01325    was_enabled = enabled;
01326    was_batchmode = batchmode;
01327    enabled = 1;
01328    batchmode = 0;
01329 
01330    /* don't run the next scheduled CDR posting while reloading */
01331    if (cdr_sched > -1)
01332       ast_sched_del(sched, cdr_sched);
01333 
01334    if ((config = ast_config_load("cdr.conf"))) {
01335       if ((enabled_value = ast_variable_retrieve(config, "general", "enable"))) {
01336          enabled = ast_true(enabled_value);
01337       }
01338       if ((unanswered_value = ast_variable_retrieve(config, "general", "unanswered"))) {
01339          unanswered = ast_true(unanswered_value);
01340       }
01341       if ((batched_value = ast_variable_retrieve(config, "general", "batch"))) {
01342          batchmode = ast_true(batched_value);
01343       }
01344       if ((scheduleronly_value = ast_variable_retrieve(config, "general", "scheduleronly"))) {
01345          batchscheduleronly = ast_true(scheduleronly_value);
01346       }
01347       if ((batchsafeshutdown_value = ast_variable_retrieve(config, "general", "safeshutdown"))) {
01348          batchsafeshutdown = ast_true(batchsafeshutdown_value);
01349       }
01350       if ((size_value = ast_variable_retrieve(config, "general", "size"))) {
01351          if (sscanf(size_value, "%d", &cfg_size) < 1)
01352             ast_log(LOG_WARNING, "Unable to convert '%s' to a numeric value.\n", size_value);
01353          else if (size_value < 0)
01354             ast_log(LOG_WARNING, "Invalid maximum batch size '%d' specified, using default\n", cfg_size);
01355          else
01356             batchsize = cfg_size;
01357       }
01358       if ((time_value = ast_variable_retrieve(config, "general", "time"))) {
01359          if (sscanf(time_value, "%d", &cfg_time) < 1)
01360             ast_log(LOG_WARNING, "Unable to convert '%s' to a numeric value.\n", time_value);
01361          else if (time_value < 0)
01362             ast_log(LOG_WARNING, "Invalid maximum batch time '%d' specified, using default\n", cfg_time);
01363          else
01364             batchtime = cfg_time;
01365       }
01366       if ((end_before_h_value = ast_variable_retrieve(config, "general", "endbeforehexten")))
01367          ast_set2_flag(&ast_options, ast_true(end_before_h_value), AST_OPT_FLAG_END_CDR_BEFORE_H_EXTEN);
01368    }
01369 
01370    if (enabled && !batchmode) {
01371       ast_log(LOG_NOTICE, "CDR simple logging enabled.\n");
01372    } else if (enabled && batchmode) {
01373       cdr_sched = ast_sched_add(sched, batchtime * 1000, submit_scheduled_batch, NULL);
01374       ast_log(LOG_NOTICE, "CDR batch mode logging enabled, first of either size %d or time %d seconds.\n", batchsize, batchtime);
01375    } else {
01376       ast_log(LOG_NOTICE, "CDR logging disabled, data will be lost.\n");
01377    }
01378 
01379    /* if this reload enabled the CDR batch mode, create the background thread
01380       if it does not exist */
01381    if (enabled && batchmode && (!was_enabled || !was_batchmode) && (cdr_thread == AST_PTHREADT_NULL)) {
01382       ast_cond_init(&cdr_pending_cond, NULL);
01383       if (ast_pthread_create_background(&cdr_thread, NULL, do_cdr, NULL) < 0) {
01384          ast_log(LOG_ERROR, "Unable to start CDR thread.\n");
01385          ast_sched_del(sched, cdr_sched);
01386       } else {
01387          ast_cli_register(&cli_submit);
01388          ast_register_atexit(ast_cdr_engine_term);
01389          res = 0;
01390       }
01391    /* if this reload disabled the CDR and/or batch mode and there is a background thread,
01392       kill it */
01393    } else if (((!enabled && was_enabled) || (!batchmode && was_batchmode)) && (cdr_thread != AST_PTHREADT_NULL)) {
01394       /* wake up the thread so it will exit */
01395       pthread_cancel(cdr_thread);
01396       pthread_kill(cdr_thread, SIGURG);
01397       pthread_join(cdr_thread, NULL);
01398       cdr_thread = AST_PTHREADT_NULL;
01399       ast_cond_destroy(&cdr_pending_cond);
01400       ast_cli_unregister(&cli_submit);
01401       ast_unregister_atexit(ast_cdr_engine_term);
01402       res = 0;
01403       /* if leaving batch mode, then post the CDRs in the batch,
01404          and don't reschedule, since we are stopping CDR logging */
01405       if (!batchmode && was_batchmode) {
01406          ast_cdr_engine_term();
01407       }
01408    } else {
01409       res = 0;
01410    }
01411 
01412    ast_mutex_unlock(&cdr_batch_lock);
01413    ast_config_destroy(config);
01414 
01415    return res;
01416 }
01417 
01418 int ast_cdr_engine_init(void)
01419 {
01420    int res;
01421 
01422    sched = sched_context_create();
01423    if (!sched) {
01424       ast_log(LOG_ERROR, "Unable to create schedule context.\n");
01425       return -1;
01426    }
01427 
01428    ast_cli_register(&cli_status);
01429 
01430    res = do_reload();
01431    if (res) {
01432       ast_mutex_lock(&cdr_batch_lock);
01433       res = init_batch();
01434       ast_mutex_unlock(&cdr_batch_lock);
01435    }
01436 
01437    return res;
01438 }
01439 
01440 /* \note This actually gets called a couple of times at shutdown.  Once, before we start
01441    hanging up channels, and then again, after the channel hangup timeout expires */
01442 void ast_cdr_engine_term(void)
01443 {
01444    ast_cdr_submit_batch(batchsafeshutdown);
01445 }
01446 
01447 int ast_cdr_engine_reload(void)
01448 {
01449    return do_reload();
01450 }
01451 

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