Tue Nov 4 13:20:14 2008

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: 118858 $")
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 #define NOAPPLICATION_DEFAULT 1
00091 
00092 static int enabled;     /*! Is the CDR subsystem enabled ? */
00093 static int unanswered;
00094 static int noapplication;
00095 static int batchmode;
00096 static int batchsize;
00097 static int batchtime;
00098 static int batchscheduleronly;
00099 static int batchsafeshutdown;
00100 
00101 AST_MUTEX_DEFINE_STATIC(cdr_batch_lock);
00102 
00103 /* these are used to wake up the CDR thread when there's work to do */
00104 AST_MUTEX_DEFINE_STATIC(cdr_pending_lock);
00105 static ast_cond_t cdr_pending_cond;
00106 
00107 int check_cdr_enabled()
00108 {
00109    return enabled;
00110 }
00111 
00112 /*! Register a CDR driver. Each registered CDR driver generates a CDR 
00113    \return 0 on success, -1 on failure 
00114 */
00115 int ast_cdr_register(const char *name, const char *desc, ast_cdrbe be)
00116 {
00117    struct ast_cdr_beitem *i;
00118 
00119    if (!name)
00120       return -1;
00121    if (!be) {
00122       ast_log(LOG_WARNING, "CDR engine '%s' lacks backend\n", name);
00123       return -1;
00124    }
00125 
00126    AST_LIST_LOCK(&be_list);
00127    AST_LIST_TRAVERSE(&be_list, i, list) {
00128       if (!strcasecmp(name, i->name))
00129          break;
00130    }
00131    AST_LIST_UNLOCK(&be_list);
00132 
00133    if (i) {
00134       ast_log(LOG_WARNING, "Already have a CDR backend called '%s'\n", name);
00135       return -1;
00136    }
00137 
00138    if (!(i = ast_calloc(1, sizeof(*i))))  
00139       return -1;
00140 
00141    i->be = be;
00142    ast_copy_string(i->name, name, sizeof(i->name));
00143    ast_copy_string(i->desc, desc, sizeof(i->desc));
00144 
00145    AST_LIST_LOCK(&be_list);
00146    AST_LIST_INSERT_HEAD(&be_list, i, list);
00147    AST_LIST_UNLOCK(&be_list);
00148 
00149    return 0;
00150 }
00151 
00152 /*! unregister a CDR driver */
00153 void ast_cdr_unregister(const char *name)
00154 {
00155    struct ast_cdr_beitem *i = NULL;
00156 
00157    AST_LIST_LOCK(&be_list);
00158    AST_LIST_TRAVERSE_SAFE_BEGIN(&be_list, i, list) {
00159       if (!strcasecmp(name, i->name)) {
00160          AST_LIST_REMOVE_CURRENT(&be_list, list);
00161          if (option_verbose > 1)
00162             ast_verbose(VERBOSE_PREFIX_2 "Unregistered '%s' CDR backend\n", name);
00163          free(i);
00164          break;
00165       }
00166    }
00167    AST_LIST_TRAVERSE_SAFE_END;
00168    AST_LIST_UNLOCK(&be_list);
00169 }
00170 
00171 /*! Duplicate a CDR record 
00172    \returns Pointer to new CDR record
00173 */
00174 struct ast_cdr *ast_cdr_dup(struct ast_cdr *cdr) 
00175 {
00176    struct ast_cdr *newcdr;
00177    
00178    if (!cdr) /* don't die if we get a null cdr pointer */
00179       return NULL;
00180    newcdr = ast_cdr_alloc();
00181    if (!newcdr)
00182       return NULL;
00183 
00184    memcpy(newcdr, cdr, sizeof(*newcdr));
00185    /* The varshead is unusable, volatile even, after the memcpy so we take care of that here */
00186    memset(&newcdr->varshead, 0, sizeof(newcdr->varshead));
00187    ast_cdr_copy_vars(newcdr, cdr);
00188    newcdr->next = NULL;
00189 
00190    return newcdr;
00191 }
00192 
00193 static const char *ast_cdr_getvar_internal(struct ast_cdr *cdr, const char *name, int recur) 
00194 {
00195    if (ast_strlen_zero(name))
00196       return NULL;
00197 
00198    for (; cdr; cdr = recur ? cdr->next : NULL) {
00199       struct ast_var_t *variables;
00200       struct varshead *headp = &cdr->varshead;
00201       AST_LIST_TRAVERSE(headp, variables, entries) {
00202          if (!strcasecmp(name, ast_var_name(variables)))
00203             return ast_var_value(variables);
00204       }
00205    }
00206 
00207    return NULL;
00208 }
00209 
00210 static void cdr_get_tv(struct timeval tv, const char *fmt, char *buf, int bufsize)
00211 {
00212    if (fmt == NULL) {   /* raw mode */
00213       snprintf(buf, bufsize, "%ld.%06ld", (long)tv.tv_sec, (long)tv.tv_usec);
00214    } else {  
00215       time_t t = tv.tv_sec;
00216       if (t) {
00217          struct tm tm;
00218 
00219          ast_localtime(&t, &tm, NULL);
00220          strftime(buf, bufsize, fmt, &tm);
00221       }
00222    }
00223 }
00224 
00225 /*! CDR channel variable retrieval */
00226 void ast_cdr_getvar(struct ast_cdr *cdr, const char *name, char **ret, char *workspace, int workspacelen, int recur, int raw) 
00227 {
00228    const char *fmt = "%Y-%m-%d %T";
00229    const char *varbuf;
00230 
00231    if (!cdr)  /* don't die if the cdr is null */
00232       return;
00233 
00234    *ret = NULL;
00235    /* special vars (the ones from the struct ast_cdr when requested by name) 
00236       I'd almost say we should convert all the stringed vals to vars */
00237 
00238    if (!strcasecmp(name, "clid"))
00239       ast_copy_string(workspace, cdr->clid, workspacelen);
00240    else if (!strcasecmp(name, "src"))
00241       ast_copy_string(workspace, cdr->src, workspacelen);
00242    else if (!strcasecmp(name, "dst"))
00243       ast_copy_string(workspace, cdr->dst, workspacelen);
00244    else if (!strcasecmp(name, "dcontext"))
00245       ast_copy_string(workspace, cdr->dcontext, workspacelen);
00246    else if (!strcasecmp(name, "channel"))
00247       ast_copy_string(workspace, cdr->channel, workspacelen);
00248    else if (!strcasecmp(name, "dstchannel"))
00249       ast_copy_string(workspace, cdr->dstchannel, workspacelen);
00250    else if (!strcasecmp(name, "lastapp"))
00251       ast_copy_string(workspace, cdr->lastapp, workspacelen);
00252    else if (!strcasecmp(name, "lastdata"))
00253       ast_copy_string(workspace, cdr->lastdata, workspacelen);
00254    else if (!strcasecmp(name, "start"))
00255       cdr_get_tv(cdr->start, raw ? NULL : fmt, workspace, workspacelen);
00256    else if (!strcasecmp(name, "answer"))
00257       cdr_get_tv(cdr->answer, raw ? NULL : fmt, workspace, workspacelen);
00258    else if (!strcasecmp(name, "end"))
00259       cdr_get_tv(cdr->end, raw ? NULL : fmt, workspace, workspacelen);
00260    else if (!strcasecmp(name, "duration"))
00261       snprintf(workspace, workspacelen, "%ld", cdr->duration);
00262    else if (!strcasecmp(name, "billsec"))
00263       snprintf(workspace, workspacelen, "%ld", cdr->billsec);
00264    else if (!strcasecmp(name, "disposition")) {
00265       if (raw) {
00266          snprintf(workspace, workspacelen, "%ld", cdr->disposition);
00267       } else {
00268          ast_copy_string(workspace, ast_cdr_disp2str(cdr->disposition), workspacelen);
00269       }
00270    } else if (!strcasecmp(name, "amaflags")) {
00271       if (raw) {
00272          snprintf(workspace, workspacelen, "%ld", cdr->amaflags);
00273       } else {
00274          ast_copy_string(workspace, ast_cdr_flags2str(cdr->amaflags), workspacelen);
00275       }
00276    } else if (!strcasecmp(name, "accountcode"))
00277       ast_copy_string(workspace, cdr->accountcode, workspacelen);
00278    else if (!strcasecmp(name, "uniqueid"))
00279       ast_copy_string(workspace, cdr->uniqueid, workspacelen);
00280    else if (!strcasecmp(name, "userfield"))
00281       ast_copy_string(workspace, cdr->userfield, workspacelen);
00282    else if ((varbuf = ast_cdr_getvar_internal(cdr, name, recur)))
00283       ast_copy_string(workspace, varbuf, workspacelen);
00284    else
00285       workspace[0] = '\0';
00286 
00287    if (!ast_strlen_zero(workspace))
00288       *ret = workspace;
00289 }
00290 
00291 /* readonly cdr variables */
00292 static   const char *cdr_readonly_vars[] = { "clid", "src", "dst", "dcontext", "channel", "dstchannel",
00293                 "lastapp", "lastdata", "start", "answer", "end", "duration",
00294                 "billsec", "disposition", "amaflags", "accountcode", "uniqueid",
00295                 "userfield", NULL };
00296 /*! Set a CDR channel variable 
00297    \note You can't set the CDR variables that belong to the actual CDR record, like "billsec".
00298 */
00299 int ast_cdr_setvar(struct ast_cdr *cdr, const char *name, const char *value, int recur) 
00300 {
00301    struct ast_var_t *newvariable;
00302    struct varshead *headp;
00303    int x;
00304    
00305    if (!cdr)  /* don't die if the cdr is null */
00306       return -1;
00307    
00308    for(x = 0; cdr_readonly_vars[x]; x++) {
00309       if (!strcasecmp(name, cdr_readonly_vars[x])) {
00310          ast_log(LOG_ERROR, "Attempt to set the '%s' read-only variable!.\n", name);
00311          return -1;
00312       }
00313    }
00314 
00315    if (!cdr) {
00316       ast_log(LOG_ERROR, "Attempt to set a variable on a nonexistent CDR record.\n");
00317       return -1;
00318    }
00319 
00320    for (; cdr; cdr = recur ? cdr->next : NULL) {
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    return 0;
00339 }
00340 
00341 int ast_cdr_copy_vars(struct ast_cdr *to_cdr, struct ast_cdr *from_cdr)
00342 {
00343    struct ast_var_t *variables, *newvariable = NULL;
00344    struct varshead *headpa, *headpb;
00345    const char *var, *val;
00346    int x = 0;
00347 
00348    if (!to_cdr || !from_cdr) /* don't die if one of the pointers is null */
00349       return 0;
00350 
00351    headpa = &from_cdr->varshead;
00352    headpb = &to_cdr->varshead;
00353 
00354    AST_LIST_TRAVERSE(headpa,variables,entries) {
00355       if (variables &&
00356           (var = ast_var_name(variables)) && (val = ast_var_value(variables)) &&
00357           !ast_strlen_zero(var) && !ast_strlen_zero(val)) {
00358          newvariable = ast_var_assign(var, val);
00359          AST_LIST_INSERT_HEAD(headpb, newvariable, entries);
00360          x++;
00361       }
00362    }
00363 
00364    return x;
00365 }
00366 
00367 int ast_cdr_serialize_variables(struct ast_cdr *cdr, char *buf, size_t size, char delim, char sep, int recur) 
00368 {
00369    struct ast_var_t *variables;
00370    const char *var, *val;
00371    char *tmp;
00372    char workspace[256];
00373    int total = 0, x = 0, i;
00374 
00375    memset(buf, 0, size);
00376 
00377    for (; cdr; cdr = recur ? cdr->next : NULL) {
00378       if (++x > 1)
00379          ast_build_string(&buf, &size, "\n");
00380 
00381       AST_LIST_TRAVERSE(&cdr->varshead, variables, entries) {
00382          if (variables &&
00383              (var = ast_var_name(variables)) && (val = ast_var_value(variables)) &&
00384              !ast_strlen_zero(var) && !ast_strlen_zero(val)) {
00385             if (ast_build_string(&buf, &size, "level %d: %s%c%s%c", x, var, delim, val, sep)) {
00386                ast_log(LOG_ERROR, "Data Buffer Size Exceeded!\n");
00387                break;
00388             } else
00389                total++;
00390          } else 
00391             break;
00392       }
00393 
00394       for (i = 0; cdr_readonly_vars[i]; i++) {
00395          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 */
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       check_post(cdr);
00705       if (cdr->disposition < AST_CDR_ANSWERED)
00706          cdr->disposition = AST_CDR_ANSWERED;
00707       if (ast_tvzero(cdr->answer))
00708          cdr->answer = ast_tvnow();
00709    }
00710 }
00711 
00712 void ast_cdr_busy(struct ast_cdr *cdr)
00713 {
00714 
00715    for (; cdr; cdr = cdr->next) {
00716       if (!ast_test_flag(cdr, AST_CDR_FLAG_LOCKED)) {
00717          check_post(cdr);
00718          if (cdr->disposition < AST_CDR_BUSY)
00719             cdr->disposition = AST_CDR_BUSY;
00720       }
00721    }
00722 }
00723 
00724 void ast_cdr_failed(struct ast_cdr *cdr)
00725 {
00726    for (; cdr; cdr = cdr->next) {
00727       check_post(cdr);
00728       if (!ast_test_flag(cdr, AST_CDR_FLAG_LOCKED)) {
00729          if (cdr->disposition < AST_CDR_FAILED)
00730             cdr->disposition = AST_CDR_FAILED;
00731       }
00732    }
00733 }
00734 
00735 void ast_cdr_noanswer(struct ast_cdr *cdr)
00736 {
00737    char *chan; 
00738 
00739    while (cdr) {
00740       chan = !ast_strlen_zero(cdr->channel) ? cdr->channel : "<unknown>";
00741       if (ast_test_flag(cdr, AST_CDR_FLAG_POSTED))
00742          ast_log(LOG_WARNING, "CDR on channel '%s' already posted\n", chan);
00743       if (!ast_test_flag(cdr, AST_CDR_FLAG_LOCKED)) {
00744          if (cdr->disposition < AST_CDR_NOANSWER)
00745             cdr->disposition = AST_CDR_NOANSWER;
00746       }
00747       cdr = cdr->next;
00748    }
00749 }
00750 
00751 /* everywhere ast_cdr_disposition is called, it will call ast_cdr_failed() 
00752    if ast_cdr_disposition returns a non-zero value */
00753 
00754 int ast_cdr_disposition(struct ast_cdr *cdr, int cause)
00755 {
00756    int res = 0;
00757 
00758    for (; cdr; cdr = cdr->next) {
00759       switch(cause) {  /* handle all the non failure, busy cases, return 0 not to set disposition,
00760                      return -1 to set disposition to FAILED */
00761       case AST_CAUSE_BUSY:
00762          ast_cdr_busy(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       check_post(cdr);
00777       if (!ast_test_flag(cdr, AST_CDR_FLAG_LOCKED))
00778          ast_copy_string(cdr->dstchannel, chann, sizeof(cdr->dstchannel));
00779    }
00780 }
00781 
00782 void ast_cdr_setapp(struct ast_cdr *cdr, char *app, char *data)
00783 {
00784 
00785    for (; cdr; cdr = cdr->next) {
00786       if (!ast_test_flag(cdr, AST_CDR_FLAG_LOCKED)) {
00787          check_post(cdr);
00788          ast_copy_string(cdr->lastapp, S_OR(app, ""), sizeof(cdr->lastapp));
00789          ast_copy_string(cdr->lastdata, S_OR(data, ""), sizeof(cdr->lastdata));
00790       }
00791    }
00792 }
00793 
00794 /* set cid info for one record */
00795 static void set_one_cid(struct ast_cdr *cdr, struct ast_channel *c)
00796 {
00797    /* Grab source from ANI or normal Caller*ID */
00798    const char *num = S_OR(c->cid.cid_ani, c->cid.cid_num);
00799    if (!cdr)
00800       return;
00801    if (!ast_strlen_zero(c->cid.cid_name)) {
00802       if (!ast_strlen_zero(num)) /* both name and number */
00803          snprintf(cdr->clid, sizeof(cdr->clid), "\"%s\" <%s>", c->cid.cid_name, num);
00804       else           /* only name */
00805          ast_copy_string(cdr->clid, c->cid.cid_name, sizeof(cdr->clid));
00806    } else if (!ast_strlen_zero(num)) { /* only number */
00807       ast_copy_string(cdr->clid, num, sizeof(cdr->clid));
00808    } else {          /* nothing known */
00809       cdr->clid[0] = '\0';
00810    }
00811    ast_copy_string(cdr->src, S_OR(num, ""), sizeof(cdr->src));
00812 
00813 }
00814 int ast_cdr_setcid(struct ast_cdr *cdr, struct ast_channel *c)
00815 {
00816    for (; cdr; cdr = cdr->next) {
00817       if (!ast_test_flag(cdr, AST_CDR_FLAG_LOCKED))
00818          set_one_cid(cdr, c);
00819    }
00820    return 0;
00821 }
00822 
00823 int ast_cdr_init(struct ast_cdr *cdr, struct ast_channel *c)
00824 {
00825    char *chan;
00826 
00827    for ( ; cdr ; cdr = cdr->next) {
00828       if (!ast_test_flag(cdr, AST_CDR_FLAG_LOCKED)) {
00829          chan = S_OR(cdr->channel, "<unknown>");
00830          ast_copy_string(cdr->channel, c->name, sizeof(cdr->channel));
00831          set_one_cid(cdr, c);
00832 
00833          cdr->disposition = (c->_state == AST_STATE_UP) ?  AST_CDR_ANSWERED : AST_CDR_NULL;
00834          cdr->amaflags = c->amaflags ? c->amaflags :  ast_default_amaflags;
00835          ast_copy_string(cdr->accountcode, c->accountcode, sizeof(cdr->accountcode));
00836          /* Destination information */
00837          ast_copy_string(cdr->dst, S_OR(c->macroexten,c->exten), sizeof(cdr->dst));
00838          ast_copy_string(cdr->dcontext, S_OR(c->macrocontext,c->context), sizeof(cdr->dcontext));
00839          /* Unique call identifier */
00840          ast_copy_string(cdr->uniqueid, c->uniqueid, sizeof(cdr->uniqueid));
00841       }
00842    }
00843    return 0;
00844 }
00845 
00846 /* Three routines were "fixed" via 10668, and later shown that 
00847    users were depending on this behavior. ast_cdr_end,
00848    ast_cdr_setvar and ast_cdr_answer are the three routines.
00849    While most of the other routines would not touch 
00850    LOCKED cdr's, these three routines were designed to
00851    operate on locked CDR's as a matter of course.
00852    I now appreciate how this plays with the ForkCDR app,
00853    which forms these cdr chains in the first place. 
00854    cdr_end is pretty key: all cdrs created are closed
00855    together. They only vary by start time. Arithmetically,
00856    users can calculate the subintervals they wish to track. */
00857 
00858 void ast_cdr_end(struct ast_cdr *cdr)
00859 {
00860    for ( ; cdr ; cdr = cdr->next) {
00861       check_post(cdr);
00862       if (ast_tvzero(cdr->end))
00863          cdr->end = ast_tvnow();
00864       if (ast_tvzero(cdr->start)) {
00865          ast_log(LOG_WARNING, "CDR on channel '%s' has not started\n", S_OR(cdr->channel, "<unknown>"));
00866          cdr->disposition = AST_CDR_FAILED;
00867       } else
00868          cdr->duration = cdr->end.tv_sec - cdr->start.tv_sec;
00869       cdr->billsec = ast_tvzero(cdr->answer) ? 0 : cdr->end.tv_sec - cdr->answer.tv_sec;
00870    }
00871 }
00872 
00873 char *ast_cdr_disp2str(int disposition)
00874 {
00875    switch (disposition) {
00876    case AST_CDR_NULL:
00877       return "NO ANSWER"; /* by default, for backward compatibility */
00878    case AST_CDR_NOANSWER:
00879       return "NO ANSWER";
00880    case AST_CDR_FAILED:
00881       return "FAILED";     
00882    case AST_CDR_BUSY:
00883       return "BUSY";    
00884    case AST_CDR_ANSWERED:
00885       return "ANSWERED";
00886    }
00887    return "UNKNOWN";
00888 }
00889 
00890 /*! Converts AMA flag to printable string */
00891 char *ast_cdr_flags2str(int flag)
00892 {
00893    switch(flag) {
00894    case AST_CDR_OMIT:
00895       return "OMIT";
00896    case AST_CDR_BILLING:
00897       return "BILLING";
00898    case AST_CDR_DOCUMENTATION:
00899       return "DOCUMENTATION";
00900    }
00901    return "Unknown";
00902 }
00903 
00904 int ast_cdr_setaccount(struct ast_channel *chan, const char *account)
00905 {
00906    struct ast_cdr *cdr = chan->cdr;
00907 
00908    ast_string_field_set(chan, accountcode, account);
00909    for ( ; cdr ; cdr = cdr->next) {
00910       if (!ast_test_flag(cdr, AST_CDR_FLAG_LOCKED)) {
00911          ast_copy_string(cdr->accountcode, chan->accountcode, sizeof(cdr->accountcode));
00912       }
00913    }
00914    return 0;
00915 }
00916 
00917 int ast_cdr_setamaflags(struct ast_channel *chan, const char *flag)
00918 {
00919    struct ast_cdr *cdr;
00920    int newflag = ast_cdr_amaflags2int(flag);
00921    if (newflag) {
00922       for (cdr = chan->cdr; cdr; cdr = cdr->next) {
00923          if (!ast_test_flag(cdr, AST_CDR_FLAG_LOCKED)) {
00924             cdr->amaflags = newflag;
00925          }
00926       }
00927    }
00928 
00929    return 0;
00930 }
00931 
00932 int ast_cdr_setuserfield(struct ast_channel *chan, const char *userfield)
00933 {
00934    struct ast_cdr *cdr = chan->cdr;
00935 
00936    for ( ; cdr ; cdr = cdr->next) {
00937       if (!ast_test_flag(cdr, AST_CDR_FLAG_LOCKED)) 
00938          ast_copy_string(cdr->userfield, userfield, sizeof(cdr->userfield));
00939    }
00940 
00941    return 0;
00942 }
00943 
00944 int ast_cdr_appenduserfield(struct ast_channel *chan, const char *userfield)
00945 {
00946    struct ast_cdr *cdr = chan->cdr;
00947 
00948    for ( ; cdr ; cdr = cdr->next) {
00949       int len = strlen(cdr->userfield);
00950 
00951       if (!ast_test_flag(cdr, AST_CDR_FLAG_LOCKED))
00952          ast_copy_string(cdr->userfield + len, userfield, sizeof(cdr->userfield) - len);
00953    }
00954 
00955    return 0;
00956 }
00957 
00958 int ast_cdr_update(struct ast_channel *c)
00959 {
00960    struct ast_cdr *cdr = c->cdr;
00961 
00962    for ( ; cdr ; cdr = cdr->next) {
00963       if (!ast_test_flag(cdr, AST_CDR_FLAG_LOCKED)) {
00964          set_one_cid(cdr, c);
00965 
00966          /* Copy account code et-al */ 
00967          ast_copy_string(cdr->accountcode, c->accountcode, sizeof(cdr->accountcode));
00968          
00969          /* Destination information */ /* XXX privilege macro* ? */
00970          ast_copy_string(cdr->dst, S_OR(c->macroexten, c->exten), sizeof(cdr->dst));
00971          ast_copy_string(cdr->dcontext, S_OR(c->macrocontext, c->context), sizeof(cdr->dcontext));
00972       }
00973    }
00974 
00975    return 0;
00976 }
00977 
00978 int ast_cdr_amaflags2int(const char *flag)
00979 {
00980    if (!strcasecmp(flag, "default"))
00981       return 0;
00982    if (!strcasecmp(flag, "omit"))
00983       return AST_CDR_OMIT;
00984    if (!strcasecmp(flag, "billing"))
00985       return AST_CDR_BILLING;
00986    if (!strcasecmp(flag, "documentation"))
00987       return AST_CDR_DOCUMENTATION;
00988    return -1;
00989 }
00990 
00991 static void post_cdr(struct ast_cdr *cdr)
00992 {
00993    char *chan;
00994    struct ast_cdr_beitem *i;
00995 
00996    for ( ; cdr ; cdr = cdr->next) {
00997       if ( (!unanswered && cdr->disposition < AST_CDR_ANSWERED && (ast_strlen_zero(cdr->channel) || ast_strlen_zero(cdr->dstchannel))) ||
00998              (unanswered && !noapplication && ast_strlen_zero(cdr->lastapp)) ) {
00999          /* For people, who don't want to see unanswered single-channel events */
01000          ast_set_flag(cdr, AST_CDR_FLAG_POST_DISABLED);
01001          continue;
01002       }
01003 
01004       chan = S_OR(cdr->channel, "<unknown>");
01005       check_post(cdr);
01006       if (ast_tvzero(cdr->end))
01007          ast_log(LOG_WARNING, "CDR on channel '%s' lacks end\n", chan);
01008       if (ast_tvzero(cdr->start))
01009          ast_log(LOG_WARNING, "CDR on channel '%s' lacks start\n", chan);
01010       ast_set_flag(cdr, AST_CDR_FLAG_POSTED);
01011       if (ast_test_flag(cdr, AST_CDR_FLAG_POST_DISABLED))
01012          continue;
01013       AST_LIST_LOCK(&be_list);
01014       AST_LIST_TRAVERSE(&be_list, i, list) {
01015          i->be(cdr);
01016       }
01017       AST_LIST_UNLOCK(&be_list);
01018    }
01019 }
01020 
01021 void ast_cdr_reset(struct ast_cdr *cdr, struct ast_flags *_flags)
01022 {
01023    struct ast_cdr *dup;
01024    struct ast_flags flags = { 0 };
01025 
01026    if (_flags)
01027       ast_copy_flags(&flags, _flags, AST_FLAGS_ALL);
01028 
01029    for ( ; cdr ; cdr = cdr->next) {
01030       /* Detach if post is requested */
01031       if (ast_test_flag(&flags, AST_CDR_FLAG_LOCKED) || !ast_test_flag(cdr, AST_CDR_FLAG_LOCKED)) {
01032          if (ast_test_flag(&flags, AST_CDR_FLAG_POSTED)) {
01033             ast_cdr_end(cdr);
01034             if ((dup = ast_cdr_dup(cdr))) {
01035                ast_cdr_detach(dup);
01036             }
01037             ast_set_flag(cdr, AST_CDR_FLAG_POSTED);
01038          }
01039 
01040          /* clear variables */
01041          if (!ast_test_flag(&flags, AST_CDR_FLAG_KEEP_VARS)) {
01042             ast_cdr_free_vars(cdr, 0);
01043          }
01044 
01045          /* Reset to initial state */
01046          ast_clear_flag(cdr, AST_FLAGS_ALL); 
01047          memset(&cdr->start, 0, sizeof(cdr->start));
01048          memset(&cdr->end, 0, sizeof(cdr->end));
01049          memset(&cdr->answer, 0, sizeof(cdr->answer));
01050          cdr->billsec = 0;
01051          cdr->duration = 0;
01052          ast_cdr_start(cdr);
01053          cdr->disposition = AST_CDR_NULL;
01054       }
01055    }
01056 }
01057 
01058 struct ast_cdr *ast_cdr_append(struct ast_cdr *cdr, struct ast_cdr *newcdr) 
01059 {
01060    struct ast_cdr *ret;
01061 
01062    if (cdr) {
01063       ret = cdr;
01064 
01065       while (cdr->next)
01066          cdr = cdr->next;
01067       cdr->next = newcdr;
01068    } else {
01069       ret = newcdr;
01070    }
01071 
01072    return ret;
01073 }
01074 
01075 /*! \note Don't call without cdr_batch_lock */
01076 static void reset_batch(void)
01077 {
01078    batch->size = 0;
01079    batch->head = NULL;
01080    batch->tail = NULL;
01081 }
01082 
01083 /*! \note Don't call without cdr_batch_lock */
01084 static int init_batch(void)
01085 {
01086    /* This is the single meta-batch used to keep track of all CDRs during the entire life of the program */
01087    if (!(batch = ast_malloc(sizeof(*batch))))
01088       return -1;
01089 
01090    reset_batch();
01091 
01092    return 0;
01093 }
01094 
01095 static void *do_batch_backend_process(void *data)
01096 {
01097    struct ast_cdr_batch_item *processeditem;
01098    struct ast_cdr_batch_item *batchitem = data;
01099 
01100    /* Push each CDR into storage mechanism(s) and free all the memory */
01101    while (batchitem) {
01102       post_cdr(batchitem->cdr);
01103       ast_cdr_free(batchitem->cdr);
01104       processeditem = batchitem;
01105       batchitem = batchitem->next;
01106       free(processeditem);
01107    }
01108 
01109    return NULL;
01110 }
01111 
01112 void ast_cdr_submit_batch(int shutdown)
01113 {
01114    struct ast_cdr_batch_item *oldbatchitems = NULL;
01115    pthread_attr_t attr;
01116    pthread_t batch_post_thread = AST_PTHREADT_NULL;
01117 
01118    /* if there's no batch, or no CDRs in the batch, then there's nothing to do */
01119    if (!batch || !batch->head)
01120       return;
01121 
01122    /* move the old CDRs aside, and prepare a new CDR batch */
01123    ast_mutex_lock(&cdr_batch_lock);
01124    oldbatchitems = batch->head;
01125    reset_batch();
01126    ast_mutex_unlock(&cdr_batch_lock);
01127 
01128    /* if configured, spawn a new thread to post these CDRs,
01129       also try to save as much as possible if we are shutting down safely */
01130    if (batchscheduleronly || shutdown) {
01131       if (option_debug)
01132          ast_log(LOG_DEBUG, "CDR single-threaded batch processing begins now\n");
01133       do_batch_backend_process(oldbatchitems);
01134    } else {
01135       pthread_attr_init(&attr);
01136       pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED);
01137       if (ast_pthread_create_background(&batch_post_thread, &attr, do_batch_backend_process, oldbatchitems)) {
01138          ast_log(LOG_WARNING, "CDR processing thread could not detach, now trying in this thread\n");
01139          do_batch_backend_process(oldbatchitems);
01140       } else {
01141          if (option_debug)
01142             ast_log(LOG_DEBUG, "CDR multi-threaded batch processing begins now\n");
01143       }
01144       pthread_attr_destroy(&attr);
01145    }
01146 }
01147 
01148 static int submit_scheduled_batch(const void *data)
01149 {
01150    ast_cdr_submit_batch(0);
01151    /* manually reschedule from this point in time */
01152    cdr_sched = ast_sched_add(sched, batchtime * 1000, submit_scheduled_batch, NULL);
01153    /* returning zero so the scheduler does not automatically reschedule */
01154    return 0;
01155 }
01156 
01157 static void submit_unscheduled_batch(void)
01158 {
01159    /* this is okay since we are not being called from within the scheduler */
01160    AST_SCHED_DEL(sched, cdr_sched);
01161    /* schedule the submission to occur ASAP (1 ms) */
01162    cdr_sched = ast_sched_add(sched, 1, submit_scheduled_batch, NULL);
01163    /* signal the do_cdr thread to wakeup early and do some work (that lazy thread ;) */
01164    ast_mutex_lock(&cdr_pending_lock);
01165    ast_cond_signal(&cdr_pending_cond);
01166    ast_mutex_unlock(&cdr_pending_lock);
01167 }
01168 
01169 void ast_cdr_detach(struct ast_cdr *cdr)
01170 {
01171    struct ast_cdr_batch_item *newtail;
01172    int curr;
01173 
01174    if (!cdr)
01175       return;
01176 
01177    /* maybe they disabled CDR stuff completely, so just drop it */
01178    if (!enabled) {
01179       if (option_debug)
01180          ast_log(LOG_DEBUG, "Dropping CDR !\n");
01181       ast_set_flag(cdr, AST_CDR_FLAG_POST_DISABLED);
01182       ast_cdr_free(cdr);
01183       return;
01184    }
01185 
01186    /* post stuff immediately if we are not in batch mode, this is legacy behaviour */
01187    if (!batchmode) {
01188       post_cdr(cdr);
01189       ast_cdr_free(cdr);
01190       return;
01191    }
01192 
01193    /* otherwise, each CDR gets put into a batch list (at the end) */
01194    if (option_debug)
01195       ast_log(LOG_DEBUG, "CDR detaching from this thread\n");
01196 
01197    /* we'll need a new tail for every CDR */
01198    if (!(newtail = ast_calloc(1, sizeof(*newtail)))) {
01199       post_cdr(cdr);
01200       ast_cdr_free(cdr);
01201       return;
01202    }
01203 
01204    /* don't traverse a whole list (just keep track of the tail) */
01205    ast_mutex_lock(&cdr_batch_lock);
01206    if (!batch)
01207       init_batch();
01208    if (!batch->head) {
01209       /* new batch is empty, so point the head at the new tail */
01210       batch->head = newtail;
01211    } else {
01212       /* already got a batch with something in it, so just append a new tail */
01213       batch->tail->next = newtail;
01214    }
01215    newtail->cdr = cdr;
01216    batch->tail = newtail;
01217    curr = batch->size++;
01218    ast_mutex_unlock(&cdr_batch_lock);
01219 
01220    /* if we have enough stuff to post, then do it */
01221    if (curr >= (batchsize - 1))
01222       submit_unscheduled_batch();
01223 }
01224 
01225 static void *do_cdr(void *data)
01226 {
01227    struct timespec timeout;
01228    int schedms;
01229    int numevents = 0;
01230 
01231    for(;;) {
01232       struct timeval now;
01233       schedms = ast_sched_wait(sched);
01234       /* this shouldn't happen, but provide a 1 second default just in case */
01235       if (schedms <= 0)
01236          schedms = 1000;
01237       now = ast_tvadd(ast_tvnow(), ast_samp2tv(schedms, 1000));
01238       timeout.tv_sec = now.tv_sec;
01239       timeout.tv_nsec = now.tv_usec * 1000;
01240       /* prevent stuff from clobbering cdr_pending_cond, then wait on signals sent to it until the timeout expires */
01241       ast_mutex_lock(&cdr_pending_lock);
01242       ast_cond_timedwait(&cdr_pending_cond, &cdr_pending_lock, &timeout);
01243       numevents = ast_sched_runq(sched);
01244       ast_mutex_unlock(&cdr_pending_lock);
01245       if (option_debug > 1)
01246          ast_log(LOG_DEBUG, "Processed %d scheduled CDR batches from the run queue\n", numevents);
01247    }
01248 
01249    return NULL;
01250 }
01251 
01252 static int handle_cli_status(int fd, int argc, char *argv[])
01253 {
01254    struct ast_cdr_beitem *beitem=NULL;
01255    int cnt=0;
01256    long nextbatchtime=0;
01257 
01258    if (argc > 2)
01259       return RESULT_SHOWUSAGE;
01260 
01261    ast_cli(fd, "CDR logging: %s\n", enabled ? "enabled" : "disabled");
01262    ast_cli(fd, "CDR mode: %s\n", batchmode ? "batch" : "simple");
01263    if (enabled) {
01264       ast_cli(fd, "CDR output unanswered calls: %s\n", unanswered ? "yes" : "no");
01265       if (unanswered) {
01266          ast_cli(fd, "CDR output no application calls: %s\n", noapplication ? "yes" : "no");
01267       }
01268       if (batchmode) {
01269          if (batch)
01270             cnt = batch->size;
01271          if (cdr_sched > -1)
01272             nextbatchtime = ast_sched_when(sched, cdr_sched);
01273          ast_cli(fd, "CDR safe shut down: %s\n", batchsafeshutdown ? "enabled" : "disabled");
01274          ast_cli(fd, "CDR batch threading model: %s\n", batchscheduleronly ? "scheduler only" : "scheduler plus separate threads");
01275          ast_cli(fd, "CDR current batch size: %d record%s\n", cnt, (cnt != 1) ? "s" : "");
01276          ast_cli(fd, "CDR maximum batch size: %d record%s\n", batchsize, (batchsize != 1) ? "s" : "");
01277          ast_cli(fd, "CDR maximum batch time: %d second%s\n", batchtime, (batchtime != 1) ? "s" : "");
01278          ast_cli(fd, "CDR next scheduled batch processing time: %ld second%s\n", nextbatchtime, (nextbatchtime != 1) ? "s" : "");
01279       }
01280       AST_LIST_LOCK(&be_list);
01281       AST_LIST_TRAVERSE(&be_list, beitem, list) {
01282          ast_cli(fd, "CDR registered backend: %s\n", beitem->name);
01283       }
01284       AST_LIST_UNLOCK(&be_list);
01285    }
01286 
01287    return 0;
01288 }
01289 
01290 static int handle_cli_submit(int fd, int argc, char *argv[])
01291 {
01292    if (argc > 2)
01293       return RESULT_SHOWUSAGE;
01294 
01295    submit_unscheduled_batch();
01296    ast_cli(fd, "Submitted CDRs to backend engines for processing.  This may take a while.\n");
01297 
01298    return 0;
01299 }
01300 
01301 static struct ast_cli_entry cli_submit = {
01302    { "cdr", "submit", NULL },
01303    handle_cli_submit, "Posts all pending batched CDR data",
01304    "Usage: cdr submit\n"
01305    "       Posts all pending batched CDR data to the configured CDR backend engine modules.\n"
01306 };
01307 
01308 static struct ast_cli_entry cli_status = {
01309    { "cdr", "status", NULL },
01310    handle_cli_status, "Display the CDR status",
01311    "Usage: cdr status\n"
01312    "  Displays the Call Detail Record engine system status.\n"
01313 };
01314 
01315 static int do_reload(void)
01316 {
01317    struct ast_config *config;
01318    const char *enabled_value;
01319    const char *unanswered_value;
01320    const char *noapplication_value;
01321    const char *batched_value;
01322    const char *scheduleronly_value;
01323    const char *batchsafeshutdown_value;
01324    const char *size_value;
01325    const char *time_value;
01326    const char *end_before_h_value;
01327    int cfg_size;
01328    int cfg_time;
01329    int was_enabled;
01330    int was_batchmode;
01331    int res=0;
01332 
01333    ast_mutex_lock(&cdr_batch_lock);
01334 
01335    noapplication = NOAPPLICATION_DEFAULT;
01336    batchsize = BATCH_SIZE_DEFAULT;
01337    batchtime = BATCH_TIME_DEFAULT;
01338    batchscheduleronly = BATCH_SCHEDULER_ONLY_DEFAULT;
01339    batchsafeshutdown = BATCH_SAFE_SHUTDOWN_DEFAULT;
01340    was_enabled = enabled;
01341    was_batchmode = batchmode;
01342    enabled = 1;
01343    batchmode = 0;
01344 
01345    /* don't run the next scheduled CDR posting while reloading */
01346    AST_SCHED_DEL(sched, cdr_sched);
01347 
01348    if ((config = ast_config_load("cdr.conf"))) {
01349       if ((enabled_value = ast_variable_retrieve(config, "general", "enable"))) {
01350          enabled = ast_true(enabled_value);
01351       }
01352       if ((unanswered_value = ast_variable_retrieve(config, "general", "unanswered"))) {
01353          unanswered = ast_true(unanswered_value);
01354          if (unanswered)
01355             if ((noapplication_value = ast_variable_retrieve(config, "general", "noapplication"))) {
01356                noapplication = ast_true(noapplication_value);
01357             }
01358       }
01359       if ((batched_value = ast_variable_retrieve(config, "general", "batch"))) {
01360          batchmode = ast_true(batched_value);
01361       }
01362       if ((scheduleronly_value = ast_variable_retrieve(config, "general", "scheduleronly"))) {
01363          batchscheduleronly = ast_true(scheduleronly_value);
01364       }
01365       if ((batchsafeshutdown_value = ast_variable_retrieve(config, "general", "safeshutdown"))) {
01366          batchsafeshutdown = ast_true(batchsafeshutdown_value);
01367       }
01368       if ((size_value = ast_variable_retrieve(config, "general", "size"))) {
01369          if (sscanf(size_value, "%d", &cfg_size) < 1)
01370             ast_log(LOG_WARNING, "Unable to convert '%s' to a numeric value.\n", size_value);
01371          else if (size_value < 0)
01372             ast_log(LOG_WARNING, "Invalid maximum batch size '%d' specified, using default\n", cfg_size);
01373          else
01374             batchsize = cfg_size;
01375       }
01376       if ((time_value = ast_variable_retrieve(config, "general", "time"))) {
01377          if (sscanf(time_value, "%d", &cfg_time) < 1)
01378             ast_log(LOG_WARNING, "Unable to convert '%s' to a numeric value.\n", time_value);
01379          else if (time_value < 0)
01380             ast_log(LOG_WARNING, "Invalid maximum batch time '%d' specified, using default\n", cfg_time);
01381          else
01382             batchtime = cfg_time;
01383       }
01384       if ((end_before_h_value = ast_variable_retrieve(config, "general", "endbeforehexten")))
01385          ast_set2_flag(&ast_options, ast_true(end_before_h_value), AST_OPT_FLAG_END_CDR_BEFORE_H_EXTEN);
01386    }
01387 
01388    if (enabled && !batchmode) {
01389       ast_log(LOG_NOTICE, "CDR simple logging enabled.\n");
01390    } else if (enabled && batchmode) {
01391       cdr_sched = ast_sched_add(sched, batchtime * 1000, submit_scheduled_batch, NULL);
01392       ast_log(LOG_NOTICE, "CDR batch mode logging enabled, first of either size %d or time %d seconds.\n", batchsize, batchtime);
01393    } else {
01394       ast_log(LOG_NOTICE, "CDR logging disabled, data will be lost.\n");
01395    }
01396 
01397    /* if this reload enabled the CDR batch mode, create the background thread
01398       if it does not exist */
01399    if (enabled && batchmode && (!was_enabled || !was_batchmode) && (cdr_thread == AST_PTHREADT_NULL)) {
01400       ast_cond_init(&cdr_pending_cond, NULL);
01401       if (ast_pthread_create_background(&cdr_thread, NULL, do_cdr, NULL) < 0) {
01402          ast_log(LOG_ERROR, "Unable to start CDR thread.\n");
01403          AST_SCHED_DEL(sched, cdr_sched);
01404       } else {
01405          ast_cli_register(&cli_submit);
01406          ast_register_atexit(ast_cdr_engine_term);
01407          res = 0;
01408       }
01409    /* if this reload disabled the CDR and/or batch mode and there is a background thread,
01410       kill it */
01411    } else if (((!enabled && was_enabled) || (!batchmode && was_batchmode)) && (cdr_thread != AST_PTHREADT_NULL)) {
01412       /* wake up the thread so it will exit */
01413       pthread_cancel(cdr_thread);
01414       pthread_kill(cdr_thread, SIGURG);
01415       pthread_join(cdr_thread, NULL);
01416       cdr_thread = AST_PTHREADT_NULL;
01417       ast_cond_destroy(&cdr_pending_cond);
01418       ast_cli_unregister(&cli_submit);
01419       ast_unregister_atexit(ast_cdr_engine_term);
01420       res = 0;
01421       /* if leaving batch mode, then post the CDRs in the batch,
01422          and don't reschedule, since we are stopping CDR logging */
01423       if (!batchmode && was_batchmode) {
01424          ast_cdr_engine_term();
01425       }
01426    } else {
01427       res = 0;
01428    }
01429 
01430    ast_mutex_unlock(&cdr_batch_lock);
01431    ast_config_destroy(config);
01432 
01433    return res;
01434 }
01435 
01436 int ast_cdr_engine_init(void)
01437 {
01438    int res;
01439 
01440    sched = sched_context_create();
01441    if (!sched) {
01442       ast_log(LOG_ERROR, "Unable to create schedule context.\n");
01443       return -1;
01444    }
01445 
01446    ast_cli_register(&cli_status);
01447 
01448    res = do_reload();
01449    if (res) {
01450       ast_mutex_lock(&cdr_batch_lock);
01451       res = init_batch();
01452       ast_mutex_unlock(&cdr_batch_lock);
01453    }
01454 
01455    return res;
01456 }
01457 
01458 /* \note This actually gets called a couple of times at shutdown.  Once, before we start
01459    hanging up channels, and then again, after the channel hangup timeout expires */
01460 void ast_cdr_engine_term(void)
01461 {
01462    ast_cdr_submit_batch(batchsafeshutdown);
01463 }
01464 
01465 int ast_cdr_engine_reload(void)
01466 {
01467    return do_reload();
01468 }
01469 

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