Mon Mar 31 07:37:57 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__, "$Revision$")
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 /*! Register a CDR driver. Each registered CDR driver generates a CDR 
00107    \return 0 on success, -1 on failure 
00108 */
00109 int ast_cdr_register(const char *name, const char *desc, ast_cdrbe be)
00110 {
00111    struct ast_cdr_beitem *i;
00112 
00113    if (!name)
00114       return -1;
00115    if (!be) {
00116       ast_log(LOG_WARNING, "CDR engine '%s' lacks backend\n", name);
00117       return -1;
00118    }
00119 
00120    AST_LIST_LOCK(&be_list);
00121    AST_LIST_TRAVERSE(&be_list, i, list) {
00122       if (!strcasecmp(name, i->name))
00123          break;
00124    }
00125    AST_LIST_UNLOCK(&be_list);
00126 
00127    if (i) {
00128       ast_log(LOG_WARNING, "Already have a CDR backend called '%s'\n", name);
00129       return -1;
00130    }
00131 
00132    if (!(i = ast_calloc(1, sizeof(*i))))  
00133       return -1;
00134 
00135    i->be = be;
00136    ast_copy_string(i->name, name, sizeof(i->name));
00137    ast_copy_string(i->desc, desc, sizeof(i->desc));
00138 
00139    AST_LIST_LOCK(&be_list);
00140    AST_LIST_INSERT_HEAD(&be_list, i, list);
00141    AST_LIST_UNLOCK(&be_list);
00142 
00143    return 0;
00144 }
00145 
00146 /*! unregister a CDR driver */
00147 void ast_cdr_unregister(const char *name)
00148 {
00149    struct ast_cdr_beitem *i = NULL;
00150 
00151    AST_LIST_LOCK(&be_list);
00152    AST_LIST_TRAVERSE_SAFE_BEGIN(&be_list, i, list) {
00153       if (!strcasecmp(name, i->name)) {
00154          AST_LIST_REMOVE_CURRENT(&be_list, list);
00155          if (option_verbose > 1)
00156             ast_verbose(VERBOSE_PREFIX_2 "Unregistered '%s' CDR backend\n", name);
00157          free(i);
00158          break;
00159       }
00160    }
00161    AST_LIST_TRAVERSE_SAFE_END;
00162    AST_LIST_UNLOCK(&be_list);
00163 }
00164 
00165 /*! Duplicate a CDR record 
00166    \returns Pointer to new CDR record
00167 */
00168 struct ast_cdr *ast_cdr_dup(struct ast_cdr *cdr) 
00169 {
00170    struct ast_cdr *newcdr;
00171    
00172    if (!cdr) /* don't die if we get a null cdr pointer */
00173       return NULL;
00174    newcdr = ast_cdr_alloc();
00175    if (!newcdr)
00176       return NULL;
00177 
00178    memcpy(newcdr, cdr, sizeof(*newcdr));
00179    /* The varshead is unusable, volatile even, after the memcpy so we take care of that here */
00180    memset(&newcdr->varshead, 0, sizeof(newcdr->varshead));
00181    ast_cdr_copy_vars(newcdr, cdr);
00182    newcdr->next = NULL;
00183 
00184    return newcdr;
00185 }
00186 
00187 static const char *ast_cdr_getvar_internal(struct ast_cdr *cdr, const char *name, int recur) 
00188 {
00189    if (ast_strlen_zero(name))
00190       return NULL;
00191 
00192    for (; cdr; cdr = recur ? cdr->next : NULL) {
00193       struct ast_var_t *variables;
00194       struct varshead *headp = &cdr->varshead;
00195       AST_LIST_TRAVERSE(headp, variables, entries) {
00196          if (!strcasecmp(name, ast_var_name(variables)))
00197             return ast_var_value(variables);
00198       }
00199    }
00200 
00201    return NULL;
00202 }
00203 
00204 static void cdr_get_tv(struct timeval tv, const char *fmt, char *buf, int bufsize)
00205 {
00206    if (fmt == NULL) {   /* raw mode */
00207       snprintf(buf, bufsize, "%ld.%06ld", (long)tv.tv_sec, (long)tv.tv_usec);
00208    } else {  
00209       time_t t = tv.tv_sec;
00210       if (t) {
00211          struct tm tm;
00212 
00213          ast_localtime(&t, &tm, NULL);
00214          strftime(buf, bufsize, fmt, &tm);
00215       }
00216    }
00217 }
00218 
00219 /*! CDR channel variable retrieval */
00220 void ast_cdr_getvar(struct ast_cdr *cdr, const char *name, char **ret, char *workspace, int workspacelen, int recur, int raw) 
00221 {
00222    const char *fmt = "%Y-%m-%d %T";
00223    const char *varbuf;
00224 
00225    if (!cdr)  /* don't die if the cdr is null */
00226       return;
00227 
00228    *ret = NULL;
00229    /* special vars (the ones from the struct ast_cdr when requested by name) 
00230       I'd almost say we should convert all the stringed vals to vars */
00231 
00232    if (!strcasecmp(name, "clid"))
00233       ast_copy_string(workspace, cdr->clid, workspacelen);
00234    else if (!strcasecmp(name, "src"))
00235       ast_copy_string(workspace, cdr->src, workspacelen);
00236    else if (!strcasecmp(name, "dst"))
00237       ast_copy_string(workspace, cdr->dst, workspacelen);
00238    else if (!strcasecmp(name, "dcontext"))
00239       ast_copy_string(workspace, cdr->dcontext, workspacelen);
00240    else if (!strcasecmp(name, "channel"))
00241       ast_copy_string(workspace, cdr->channel, workspacelen);
00242    else if (!strcasecmp(name, "dstchannel"))
00243       ast_copy_string(workspace, cdr->dstchannel, workspacelen);
00244    else if (!strcasecmp(name, "lastapp"))
00245       ast_copy_string(workspace, cdr->lastapp, workspacelen);
00246    else if (!strcasecmp(name, "lastdata"))
00247       ast_copy_string(workspace, cdr->lastdata, workspacelen);
00248    else if (!strcasecmp(name, "start"))
00249       cdr_get_tv(cdr->start, raw ? NULL : fmt, workspace, workspacelen);
00250    else if (!strcasecmp(name, "answer"))
00251       cdr_get_tv(cdr->answer, raw ? NULL : fmt, workspace, workspacelen);
00252    else if (!strcasecmp(name, "end"))
00253       cdr_get_tv(cdr->end, raw ? NULL : fmt, workspace, workspacelen);
00254    else if (!strcasecmp(name, "duration"))
00255       snprintf(workspace, workspacelen, "%ld", cdr->duration);
00256    else if (!strcasecmp(name, "billsec"))
00257       snprintf(workspace, workspacelen, "%ld", cdr->billsec);
00258    else if (!strcasecmp(name, "disposition")) {
00259       if (raw) {
00260          snprintf(workspace, workspacelen, "%ld", cdr->disposition);
00261       } else {
00262          ast_copy_string(workspace, ast_cdr_disp2str(cdr->disposition), workspacelen);
00263       }
00264    } else if (!strcasecmp(name, "amaflags")) {
00265       if (raw) {
00266          snprintf(workspace, workspacelen, "%ld", cdr->amaflags);
00267       } else {
00268          ast_copy_string(workspace, ast_cdr_flags2str(cdr->amaflags), workspacelen);
00269       }
00270    } else if (!strcasecmp(name, "accountcode"))
00271       ast_copy_string(workspace, cdr->accountcode, workspacelen);
00272    else if (!strcasecmp(name, "uniqueid"))
00273       ast_copy_string(workspace, cdr->uniqueid, workspacelen);
00274    else if (!strcasecmp(name, "userfield"))
00275       ast_copy_string(workspace, cdr->userfield, workspacelen);
00276    else if ((varbuf = ast_cdr_getvar_internal(cdr, name, recur)))
00277       ast_copy_string(workspace, varbuf, workspacelen);
00278    else
00279       workspace[0] = '\0';
00280 
00281    if (!ast_strlen_zero(workspace))
00282       *ret = workspace;
00283 }
00284 
00285 /* readonly cdr variables */
00286 static   const char *cdr_readonly_vars[] = { "clid", "src", "dst", "dcontext", "channel", "dstchannel",
00287                 "lastapp", "lastdata", "start", "answer", "end", "duration",
00288                 "billsec", "disposition", "amaflags", "accountcode", "uniqueid",
00289                 "userfield", NULL };
00290 /*! Set a CDR channel variable 
00291    \note You can't set the CDR variables that belong to the actual CDR record, like "billsec".
00292 */
00293 int ast_cdr_setvar(struct ast_cdr *cdr, const char *name, const char *value, int recur) 
00294 {
00295    struct ast_var_t *newvariable;
00296    struct varshead *headp;
00297    int x;
00298    
00299    if (!cdr)  /* don't die if the cdr is null */
00300       return -1;
00301    
00302    for(x = 0; cdr_readonly_vars[x]; x++) {
00303       if (!strcasecmp(name, cdr_readonly_vars[x])) {
00304          ast_log(LOG_ERROR, "Attempt to set the '%s' read-only variable!.\n", name);
00305          return -1;
00306       }
00307    }
00308 
00309    if (!cdr) {
00310       ast_log(LOG_ERROR, "Attempt to set a variable on a nonexistent CDR record.\n");
00311       return -1;
00312    }
00313 
00314    for (; cdr; cdr = recur ? cdr->next : NULL) {
00315       if (!ast_test_flag(cdr, AST_CDR_FLAG_LOCKED)) {
00316          headp = &cdr->varshead;
00317          AST_LIST_TRAVERSE_SAFE_BEGIN(headp, newvariable, entries) {
00318             if (!strcasecmp(ast_var_name(newvariable), name)) {
00319                /* there is already such a variable, delete it */
00320                AST_LIST_REMOVE_CURRENT(headp, entries);
00321                ast_var_delete(newvariable);
00322                break;
00323             }
00324          }
00325          AST_LIST_TRAVERSE_SAFE_END;
00326 
00327          if (value) {
00328             newvariable = ast_var_assign(name, value);
00329             AST_LIST_INSERT_HEAD(headp, newvariable, entries);
00330          }
00331       }
00332    }
00333 
00334    return 0;
00335 }
00336 
00337 int ast_cdr_copy_vars(struct ast_cdr *to_cdr, struct ast_cdr *from_cdr)
00338 {
00339    struct ast_var_t *variables, *newvariable = NULL;
00340    struct varshead *headpa, *headpb;
00341    const char *var, *val;
00342    int x = 0;
00343 
00344    if (!to_cdr || !from_cdr) /* don't die if one of the pointers is null */
00345       return 0;
00346 
00347    headpa = &from_cdr->varshead;
00348    headpb = &to_cdr->varshead;
00349 
00350    AST_LIST_TRAVERSE(headpa,variables,entries) {
00351       if (variables &&
00352           (var = ast_var_name(variables)) && (val = ast_var_value(variables)) &&
00353           !ast_strlen_zero(var) && !ast_strlen_zero(val)) {
00354          newvariable = ast_var_assign(var, val);
00355          AST_LIST_INSERT_HEAD(headpb, newvariable, entries);
00356          x++;
00357       }
00358    }
00359 
00360    return x;
00361 }
00362 
00363 int ast_cdr_serialize_variables(struct ast_cdr *cdr, char *buf, size_t size, char delim, char sep, int recur) 
00364 {
00365    struct ast_var_t *variables;
00366    const char *var, *val;
00367    char *tmp;
00368    char workspace[256];
00369    int total = 0, x = 0, i;
00370 
00371    memset(buf, 0, size);
00372 
00373    for (; cdr; cdr = recur ? cdr->next : NULL) {
00374       if (++x > 1)
00375          ast_build_string(&buf, &size, "\n");
00376 
00377       AST_LIST_TRAVERSE(&cdr->varshead, variables, entries) {
00378          if (variables &&
00379              (var = ast_var_name(variables)) && (val = ast_var_value(variables)) &&
00380              !ast_strlen_zero(var) && !ast_strlen_zero(val)) {
00381             if (ast_build_string(&buf, &size, "level %d: %s%c%s%c", x, var, delim, val, sep)) {
00382                ast_log(LOG_ERROR, "Data Buffer Size Exceeded!\n");
00383                break;
00384             } else
00385                total++;
00386          } else 
00387             break;
00388       }
00389 
00390       for (i = 0; cdr_readonly_vars[i]; i++) {
00391          ast_cdr_getvar(cdr, cdr_readonly_vars[i], &tmp, workspace, sizeof(workspace), 0, 0);
00392          if (!tmp)
00393             continue;
00394          
00395          if (ast_build_string(&buf, &size, "level %d: %s%c%s%c", x, cdr_readonly_vars[i], delim, tmp, sep)) {
00396             ast_log(LOG_ERROR, "Data Buffer Size Exceeded!\n");
00397             break;
00398          } else
00399             total++;
00400       }
00401    }
00402 
00403    return total;
00404 }
00405 
00406 
00407 void ast_cdr_free_vars(struct ast_cdr *cdr, int recur)
00408 {
00409 
00410    /* clear variables */
00411    for (; cdr; cdr = recur ? cdr->next : NULL) {
00412       struct ast_var_t *vardata;
00413       struct varshead *headp = &cdr->varshead;
00414       while ((vardata = AST_LIST_REMOVE_HEAD(headp, entries)))
00415          ast_var_delete(vardata);
00416    }
00417 }
00418 
00419 /*! \brief  print a warning if cdr already posted */
00420 static void check_post(struct ast_cdr *cdr)
00421 {
00422    if (!cdr)
00423       return;
00424    if (ast_test_flag(cdr, AST_CDR_FLAG_POSTED))
00425       ast_log(LOG_NOTICE, "CDR on channel '%s' already posted\n", S_OR(cdr->channel, "<unknown>"));
00426 }
00427 
00428 void ast_cdr_free(struct ast_cdr *cdr)
00429 {
00430 
00431    while (cdr) {
00432       struct ast_cdr *next = cdr->next;
00433       char *chan = S_OR(cdr->channel, "<unknown>");
00434       if (!ast_test_flag(cdr, AST_CDR_FLAG_POSTED) && !ast_test_flag(cdr, AST_CDR_FLAG_POST_DISABLED))
00435          ast_log(LOG_NOTICE, "CDR on channel '%s' not posted\n", chan);
00436       if (ast_tvzero(cdr->end))
00437          ast_log(LOG_NOTICE, "CDR on channel '%s' lacks end\n", chan);
00438       if (ast_tvzero(cdr->start))
00439          ast_log(LOG_NOTICE, "CDR on channel '%s' lacks start\n", chan);
00440 
00441       ast_cdr_free_vars(cdr, 0);
00442       free(cdr);
00443       cdr = next;
00444    }
00445 }
00446 
00447 /*! \brief the same as a cdr_free call, only with no checks; just get rid of it */
00448 void ast_cdr_discard(struct ast_cdr *cdr)
00449 {
00450    while (cdr) {
00451       struct ast_cdr *next = cdr->next;
00452 
00453       ast_cdr_free_vars(cdr, 0);
00454       free(cdr);
00455       cdr = next;
00456    }
00457 }
00458 
00459 struct ast_cdr *ast_cdr_alloc(void)
00460 {
00461    struct ast_cdr *x = ast_calloc(1, sizeof(struct ast_cdr));
00462    if (!x)
00463       ast_log(LOG_ERROR,"Allocation Failure for a CDR!\n");
00464    return x;
00465 }
00466 
00467 static void cdr_merge_vars(struct ast_cdr *to, struct ast_cdr *from)
00468 {
00469    struct ast_var_t *variablesfrom,*variablesto;
00470    struct varshead *headpfrom = &to->varshead;
00471    struct varshead *headpto = &from->varshead;
00472    AST_LIST_TRAVERSE_SAFE_BEGIN(headpfrom, variablesfrom, entries) {
00473       /* for every var in from, stick it in to */
00474       const char *fromvarname = NULL, *fromvarval = NULL;
00475       const char *tovarname = NULL, *tovarval = NULL;
00476       fromvarname = ast_var_name(variablesfrom);
00477       fromvarval = ast_var_value(variablesfrom);
00478       tovarname = 0;
00479 
00480       /* now, quick see if that var is in the 'to' cdr already */
00481       AST_LIST_TRAVERSE(headpto, variablesto, entries) {
00482 
00483          /* now, quick see if that var is in the 'to' cdr already */
00484          if ( strcasecmp(fromvarname, ast_var_name(variablesto)) == 0 ) {
00485             tovarname = ast_var_name(variablesto);
00486             tovarval = ast_var_value(variablesto);
00487             break;
00488          }
00489       }
00490       if (tovarname && strcasecmp(fromvarval,tovarval) != 0) {  /* this message here to see how irritating the userbase finds it */
00491          ast_log(LOG_NOTICE, "Merging CDR's: variable %s value %s dropped in favor of value %s\n", tovarname, fromvarval, tovarval);
00492          continue;
00493       } else if (tovarname && strcasecmp(fromvarval,tovarval) == 0) /* if they are the same, the job is done */
00494          continue;
00495 
00496       /*rip this var out of the from cdr, and stick it in the to cdr */
00497       AST_LIST_REMOVE_CURRENT(headpfrom, entries);
00498       AST_LIST_INSERT_HEAD(headpto, variablesfrom, entries);
00499    }
00500    AST_LIST_TRAVERSE_SAFE_END;
00501 }
00502 
00503 void ast_cdr_merge(struct ast_cdr *to, struct ast_cdr *from)
00504 {
00505    struct ast_cdr *zcdr;
00506    struct ast_cdr *lto = NULL;
00507    struct ast_cdr *lfrom = NULL;
00508    int discard_from = 0;
00509    
00510    if (!to || !from)
00511       return;
00512 
00513    /* don't merge into locked CDR's -- it's bad business */
00514    if (ast_test_flag(to, AST_CDR_FLAG_LOCKED)) {
00515       zcdr = to; /* safety valve? */
00516       while (to->next) {
00517          lto = to;
00518          to = to->next;
00519       }
00520       
00521       if (ast_test_flag(to, AST_CDR_FLAG_LOCKED)) {
00522          ast_log(LOG_WARNING, "Merging into locked CDR... no choice.");
00523          to = zcdr; /* safety-- if all there are is locked CDR's, then.... ?? */
00524          lto = NULL;
00525       }
00526    }
00527 
00528    if (ast_test_flag(from, AST_CDR_FLAG_LOCKED)) {
00529       discard_from = 1;
00530       if (lto) {
00531          struct ast_cdr *llfrom = NULL;
00532          /* insert the from stuff after lto */
00533          lto->next = from;
00534          lfrom = from;
00535          while (lfrom && lfrom->next) {
00536             if (!lfrom->next->next)
00537                llfrom = lfrom;
00538             lfrom = lfrom->next; 
00539          }
00540          /* rip off the last entry and put a copy of the to at the end */
00541          llfrom->next = to;
00542          from = lfrom;
00543       } else {
00544          /* save copy of the current *to cdr */
00545          struct ast_cdr tcdr;
00546          struct ast_cdr *llfrom = NULL;
00547          memcpy(&tcdr, to, sizeof(tcdr));
00548          /* copy in the locked from cdr */
00549          memcpy(to, from, sizeof(*to));
00550          lfrom = from;
00551          while (lfrom && lfrom->next) {
00552             if (!lfrom->next->next)
00553                llfrom = lfrom;
00554             lfrom = lfrom->next; 
00555          }
00556          from->next = NULL;
00557          /* rip off the last entry and put a copy of the to at the end */
00558          if (llfrom == from)
00559             to = to->next = ast_cdr_dup(&tcdr);
00560          else
00561             to = llfrom->next = ast_cdr_dup(&tcdr);
00562          from = lfrom;
00563       }
00564    }
00565    
00566    if (!ast_tvzero(from->start)) {
00567       if (!ast_tvzero(to->start)) {
00568          if (ast_tvcmp(to->start, from->start) > 0 ) {
00569             to->start = from->start; /* use the earliest time */
00570             from->start = ast_tv(0,0); /* we actively "steal" these values */
00571          }
00572          /* else nothing to do */
00573       } else {
00574          to->start = from->start;
00575          from->start = ast_tv(0,0); /* we actively "steal" these values */
00576       }
00577    }
00578    if (!ast_tvzero(from->answer)) {
00579       if (!ast_tvzero(to->answer)) {
00580          if (ast_tvcmp(to->answer, from->answer) > 0 ) {
00581             to->answer = from->answer; /* use the earliest time */
00582             from->answer = ast_tv(0,0); /* we actively "steal" these values */
00583          }
00584          /* we got the earliest answer time, so we'll settle for that? */
00585       } else {
00586          to->answer = from->answer;
00587          from->answer = ast_tv(0,0); /* we actively "steal" these values */
00588       }
00589    }
00590    if (!ast_tvzero(from->end)) {
00591       if (!ast_tvzero(to->end)) {
00592          if (ast_tvcmp(to->end, from->end) < 0 ) {
00593             to->end = from->end; /* use the latest time */
00594             from->end = ast_tv(0,0); /* we actively "steal" these values */
00595             to->duration = to->end.tv_sec - to->start.tv_sec;  /* don't forget to update the duration, billsec, when we set end */
00596             to->billsec = ast_tvzero(to->answer) ? 0 : to->end.tv_sec - to->answer.tv_sec;
00597          }
00598          /* else, nothing to do */
00599       } else {
00600          to->end = from->end;
00601          from->end = ast_tv(0,0); /* we actively "steal" these values */
00602          to->duration = to->end.tv_sec - to->start.tv_sec;
00603          to->billsec = ast_tvzero(to->answer) ? 0 : to->end.tv_sec - to->answer.tv_sec;
00604       }
00605    }
00606    if (to->disposition < from->disposition) {
00607       to->disposition = from->disposition;
00608       from->disposition = AST_CDR_NOANSWER;
00609    }
00610    if (ast_strlen_zero(to->lastapp) && !ast_strlen_zero(from->lastapp)) {
00611       ast_copy_string(to->lastapp, from->lastapp, sizeof(to->lastapp));
00612       from->lastapp[0] = 0; /* theft */
00613    }
00614    if (ast_strlen_zero(to->lastdata) && !ast_strlen_zero(from->lastdata)) {
00615       ast_copy_string(to->lastdata, from->lastdata, sizeof(to->lastdata));
00616       from->lastdata[0] = 0; /* theft */
00617    }
00618    if (ast_strlen_zero(to->dcontext) && !ast_strlen_zero(from->dcontext)) {
00619       ast_copy_string(to->dcontext, from->dcontext, sizeof(to->dcontext));
00620       from->dcontext[0] = 0; /* theft */
00621    }
00622    if (ast_strlen_zero(to->dstchannel) && !ast_strlen_zero(from->dstchannel)) {
00623       ast_copy_string(to->dstchannel, from->dstchannel, sizeof(to->dstchannel));
00624       from->dstchannel[0] = 0; /* theft */
00625    }
00626    if (!ast_strlen_zero(from->channel) && (ast_strlen_zero(to->channel) || !strncasecmp(from->channel, "Agent/", 6))) {
00627       ast_copy_string(to->channel, from->channel, sizeof(to->channel));
00628       from->channel[0] = 0; /* theft */
00629    }
00630    if (ast_strlen_zero(to->src) && !ast_strlen_zero(from->src)) {
00631       ast_copy_string(to->src, from->src, sizeof(to->src));
00632       from->src[0] = 0; /* theft */
00633    }
00634    if (ast_strlen_zero(to->clid) && !ast_strlen_zero(from->clid)) {
00635       ast_copy_string(to->clid, from->clid, sizeof(to->clid));
00636       from->clid[0] = 0; /* theft */
00637    }
00638    if (ast_strlen_zero(to->dst) && !ast_strlen_zero(from->dst)) {
00639       ast_copy_string(to->dst, from->dst, sizeof(to->dst));
00640       from->dst[0] = 0; /* theft */
00641    }
00642    if (!to->amaflags)
00643       to->amaflags = AST_CDR_DOCUMENTATION;
00644    if (!from->amaflags)
00645       from->amaflags = AST_CDR_DOCUMENTATION; /* make sure both amaflags are set to something (DOC is default) */
00646    if (ast_test_flag(from, AST_CDR_FLAG_LOCKED) || (to->amaflags == AST_CDR_DOCUMENTATION && from->amaflags != AST_CDR_DOCUMENTATION)) {
00647       to->amaflags = from->amaflags;
00648    }
00649    if (ast_test_flag(from, AST_CDR_FLAG_LOCKED) || (ast_strlen_zero(to->accountcode) && !ast_strlen_zero(from->accountcode))) {
00650       ast_copy_string(to->accountcode, from->accountcode, sizeof(to->accountcode));
00651    }
00652    if (ast_test_flag(from, AST_CDR_FLAG_LOCKED) || (ast_strlen_zero(to->userfield) && !ast_strlen_zero(from->userfield))) {
00653       ast_copy_string(to->userfield, from->userfield, sizeof(to->userfield));
00654    }
00655    /* flags, varsead, ? */
00656    cdr_merge_vars(from, to);
00657 
00658    if (ast_test_flag(from, AST_CDR_FLAG_KEEP_VARS))
00659       ast_set_flag(to, AST_CDR_FLAG_KEEP_VARS);
00660    if (ast_test_flag(from, AST_CDR_FLAG_POSTED))
00661       ast_set_flag(to, AST_CDR_FLAG_POSTED);
00662    if (ast_test_flag(from, AST_CDR_FLAG_LOCKED))
00663       ast_set_flag(to, AST_CDR_FLAG_LOCKED);
00664    if (ast_test_flag(from, AST_CDR_FLAG_CHILD))
00665       ast_set_flag(to, AST_CDR_FLAG_CHILD);
00666    if (ast_test_flag(from, AST_CDR_FLAG_POST_DISABLED))
00667       ast_set_flag(to, AST_CDR_FLAG_POST_DISABLED);
00668 
00669    /* last, but not least, we need to merge any forked CDRs to the 'to' cdr */
00670    while (from->next) {
00671       /* just rip 'em off the 'from' and insert them on the 'to' */
00672       zcdr = from->next;
00673       from->next = zcdr->next;
00674       zcdr->next = NULL;
00675       /* zcdr is now ripped from the current list; */
00676       ast_cdr_append(to, zcdr);
00677    }
00678    if (discard_from)
00679       ast_cdr_discard(from);
00680 }
00681 
00682 void ast_cdr_start(struct ast_cdr *cdr)
00683 {
00684    char *chan; 
00685 
00686    for (; cdr; cdr = cdr->next) {
00687       if (!ast_test_flag(cdr, AST_CDR_FLAG_LOCKED)) {
00688          chan = S_OR(cdr->channel, "<unknown>");
00689          check_post(cdr);
00690          cdr->start = ast_tvnow();
00691       }
00692    }
00693 }
00694 
00695 void ast_cdr_answer(struct ast_cdr *cdr)
00696 {
00697 
00698    for (; cdr; cdr = cdr->next) {
00699       if (!ast_test_flag(cdr, AST_CDR_FLAG_LOCKED)) {
00700          check_post(cdr);
00701          if (cdr->disposition < AST_CDR_ANSWERED)
00702             cdr->disposition = AST_CDR_ANSWERED;
00703          if (ast_tvzero(cdr->answer))
00704             cdr->answer = ast_tvnow();
00705       }
00706    }
00707 }
00708 
00709 void ast_cdr_busy(struct ast_cdr *cdr)
00710 {
00711 
00712    for (; cdr; cdr = cdr->next) {
00713       if (!ast_test_flag(cdr, AST_CDR_FLAG_LOCKED)) {
00714          check_post(cdr);
00715          if (cdr->disposition < AST_CDR_BUSY)
00716             cdr->disposition = AST_CDR_BUSY;
00717       }
00718    }
00719 }
00720 
00721 void ast_cdr_failed(struct ast_cdr *cdr)
00722 {
00723    for (; cdr; cdr = cdr->next) {
00724       check_post(cdr);
00725       if (!ast_test_flag(cdr, AST_CDR_FLAG_LOCKED)) {
00726          if (cdr->disposition < AST_CDR_FAILED)
00727             cdr->disposition = AST_CDR_FAILED;
00728       }
00729    }
00730 }
00731 
00732 void ast_cdr_noanswer(struct ast_cdr *cdr)
00733 {
00734    char *chan; 
00735 
00736    while (cdr) {
00737       chan = !ast_strlen_zero(cdr->channel) ? cdr->channel : "<unknown>";
00738       if (ast_test_flag(cdr, AST_CDR_FLAG_POSTED))
00739          ast_log(LOG_WARNING, "CDR on channel '%s' already posted\n", chan);
00740       if (!ast_test_flag(cdr, AST_CDR_FLAG_LOCKED)) {
00741          if (cdr->disposition < AST_CDR_NOANSWER)
00742             cdr->disposition = AST_CDR_NOANSWER;
00743       }
00744       cdr = cdr->next;
00745    }
00746 }
00747 
00748 /* everywhere ast_cdr_disposition is called, it will call ast_cdr_failed() 
00749    if ast_cdr_disposition returns a non-zero value */
00750 
00751 int ast_cdr_disposition(struct ast_cdr *cdr, int cause)
00752 {
00753    int res = 0;
00754 
00755    for (; cdr; cdr = cdr->next) {
00756       switch(cause) {  /* handle all the non failure, busy cases, return 0 not to set disposition,
00757                      return -1 to set disposition to FAILED */
00758       case AST_CAUSE_BUSY:
00759          ast_cdr_busy(cdr);
00760          break;
00761       case AST_CAUSE_NORMAL:
00762          break;
00763       default:
00764          res = -1;
00765       }
00766    }
00767    return res;
00768 }
00769 
00770 void ast_cdr_setdestchan(struct ast_cdr *cdr, const char *chann)
00771 {
00772    for (; cdr; cdr = cdr->next) {
00773       check_post(cdr);
00774       if (!ast_test_flag(cdr, AST_CDR_FLAG_LOCKED))
00775          ast_copy_string(cdr->dstchannel, chann, sizeof(cdr->dstchannel));
00776    }
00777 }
00778 
00779 void ast_cdr_setapp(struct ast_cdr *cdr, char *app, char *data)
00780 {
00781 
00782    for (; cdr; cdr = cdr->next) {
00783       if (!ast_test_flag(cdr, AST_CDR_FLAG_LOCKED)) {
00784          check_post(cdr);
00785          ast_copy_string(cdr->lastapp, S_OR(app, ""), sizeof(cdr->lastapp));
00786          ast_copy_string(cdr->lastdata, S_OR(data, ""), sizeof(cdr->lastdata));
00787       }
00788    }
00789 }
00790 
00791 /* set cid info for one record */
00792 static void set_one_cid(struct ast_cdr *cdr, struct ast_channel *c)
00793 {
00794    /* Grab source from ANI or normal Caller*ID */
00795    const char *num = S_OR(c->cid.cid_ani, c->cid.cid_num);
00796    if (!cdr)
00797       return;
00798    if (!ast_strlen_zero(c->cid.cid_name)) {
00799       if (!ast_strlen_zero(num)) /* both name and number */
00800          snprintf(cdr->clid, sizeof(cdr->clid), "\"%s\" <%s>", c->cid.cid_name, num);
00801       else           /* only name */
00802          ast_copy_string(cdr->clid, c->cid.cid_name, sizeof(cdr->clid));
00803    } else if (!ast_strlen_zero(num)) { /* only number */
00804       ast_copy_string(cdr->clid, num, sizeof(cdr->clid));
00805    } else {          /* nothing known */
00806       cdr->clid[0] = '\0';
00807    }
00808    ast_copy_string(cdr->src, S_OR(num, ""), sizeof(cdr->src));
00809 
00810 }
00811 int ast_cdr_setcid(struct ast_cdr *cdr, struct ast_channel *c)
00812 {
00813    for (; cdr; cdr = cdr->next) {
00814       if (!ast_test_flag(cdr, AST_CDR_FLAG_LOCKED))
00815          set_one_cid(cdr, c);
00816    }
00817    return 0;
00818 }
00819 
00820 int ast_cdr_init(struct ast_cdr *cdr, struct ast_channel *c)
00821 {
00822    char *chan;
00823 
00824    for ( ; cdr ; cdr = cdr->next) {
00825       if (!ast_test_flag(cdr, AST_CDR_FLAG_LOCKED)) {
00826          chan = S_OR(cdr->channel, "<unknown>");
00827          ast_copy_string(cdr->channel, c->name, sizeof(cdr->channel));
00828          set_one_cid(cdr, c);
00829 
00830          cdr->disposition = (c->_state == AST_STATE_UP) ?  AST_CDR_ANSWERED : AST_CDR_NULL;
00831          cdr->amaflags = c->amaflags ? c->amaflags :  ast_default_amaflags;
00832          ast_copy_string(cdr->accountcode, c->accountcode, sizeof(cdr->accountcode));
00833          /* Destination information */
00834          ast_copy_string(cdr->dst, S_OR(c->macroexten,c->exten), sizeof(cdr->dst));
00835          ast_copy_string(cdr->dcontext, S_OR(c->macrocontext,c->context), sizeof(cdr->dcontext));
00836          /* Unique call identifier */
00837          ast_copy_string(cdr->uniqueid, c->uniqueid, sizeof(cdr->uniqueid));
00838       }
00839    }
00840    return 0;
00841 }
00842 
00843 void ast_cdr_end(struct ast_cdr *cdr)
00844 {
00845    for ( ; cdr ; cdr = cdr->next) {
00846       if (!ast_test_flag(cdr, AST_CDR_FLAG_LOCKED)) {
00847          check_post(cdr);
00848          if (ast_tvzero(cdr->end))
00849             cdr->end = ast_tvnow();
00850          if (ast_tvzero(cdr->start)) {
00851             ast_log(LOG_WARNING, "CDR on channel '%s' has not started\n", S_OR(cdr->channel, "<unknown>"));
00852             cdr->disposition = AST_CDR_FAILED;
00853          } else
00854             cdr->duration = cdr->end.tv_sec - cdr->start.tv_sec;
00855          cdr->billsec = ast_tvzero(cdr->answer) ? 0 : cdr->end.tv_sec - cdr->answer.tv_sec;
00856       }
00857    }
00858 }
00859 
00860 char *ast_cdr_disp2str(int disposition)
00861 {
00862    switch (disposition) {
00863    case AST_CDR_NULL:
00864       return "NO ANSWER"; /* by default, for backward compatibility */
00865    case AST_CDR_NOANSWER:
00866       return "NO ANSWER";
00867    case AST_CDR_FAILED:
00868       return "FAILED";     
00869    case AST_CDR_BUSY:
00870       return "BUSY";    
00871    case AST_CDR_ANSWERED:
00872       return "ANSWERED";
00873    }
00874    return "UNKNOWN";
00875 }
00876 
00877 /*! Converts AMA flag to printable string */
00878 char *ast_cdr_flags2str(int flag)
00879 {
00880    switch(flag) {
00881    case AST_CDR_OMIT:
00882       return "OMIT";
00883    case AST_CDR_BILLING:
00884       return "BILLING";
00885    case AST_CDR_DOCUMENTATION:
00886       return "DOCUMENTATION";
00887    }
00888    return "Unknown";
00889 }
00890 
00891 int ast_cdr_setaccount(struct ast_channel *chan, const char *account)
00892 {
00893    struct ast_cdr *cdr = chan->cdr;
00894 
00895    ast_string_field_set(chan, accountcode, account);
00896    for ( ; cdr ; cdr = cdr->next) {
00897       if (!ast_test_flag(cdr, AST_CDR_FLAG_LOCKED)) {
00898          ast_copy_string(cdr->accountcode, chan->accountcode, sizeof(cdr->accountcode));
00899       }
00900    }
00901    return 0;
00902 }
00903 
00904 int ast_cdr_setamaflags(struct ast_channel *chan, const char *flag)
00905 {
00906    struct ast_cdr *cdr;
00907    int newflag = ast_cdr_amaflags2int(flag);
00908    if (newflag) {
00909       for (cdr = chan->cdr; cdr; cdr = cdr->next) {
00910          if (!ast_test_flag(cdr, AST_CDR_FLAG_LOCKED)) {
00911             cdr->amaflags = newflag;
00912          }
00913       }
00914    }
00915 
00916    return 0;
00917 }
00918 
00919 int ast_cdr_setuserfield(struct ast_channel *chan, const char *userfield)
00920 {
00921    struct ast_cdr *cdr = chan->cdr;
00922 
00923    for ( ; cdr ; cdr = cdr->next) {
00924       if (!ast_test_flag(cdr, AST_CDR_FLAG_LOCKED)) 
00925          ast_copy_string(cdr->userfield, userfield, sizeof(cdr->userfield));
00926    }
00927 
00928    return 0;
00929 }
00930 
00931 int ast_cdr_appenduserfield(struct ast_channel *chan, const char *userfield)
00932 {
00933    struct ast_cdr *cdr = chan->cdr;
00934 
00935    for ( ; cdr ; cdr = cdr->next) {
00936       int len = strlen(cdr->userfield);
00937 
00938       if (!ast_test_flag(cdr, AST_CDR_FLAG_LOCKED))
00939          ast_copy_string(cdr->userfield + len, userfield, sizeof(cdr->userfield) - len);
00940    }
00941 
00942    return 0;
00943 }
00944 
00945 int ast_cdr_update(struct ast_channel *c)
00946 {
00947    struct ast_cdr *cdr = c->cdr;
00948 
00949    for ( ; cdr ; cdr = cdr->next) {
00950       if (!ast_test_flag(cdr, AST_CDR_FLAG_LOCKED)) {
00951          set_one_cid(cdr, c);
00952 
00953          /* Copy account code et-al */ 
00954          ast_copy_string(cdr->accountcode, c->accountcode, sizeof(cdr->accountcode));
00955          
00956          /* Destination information */ /* XXX privilege macro* ? */
00957          ast_copy_string(cdr->dst, S_OR(c->macroexten, c->exten), sizeof(cdr->dst));
00958          ast_copy_string(cdr->dcontext, S_OR(c->macrocontext, c->context), sizeof(cdr->dcontext));
00959       }
00960    }
00961 
00962    return 0;
00963 }
00964 
00965 int ast_cdr_amaflags2int(const char *flag)
00966 {
00967    if (!strcasecmp(flag, "default"))
00968       return 0;
00969    if (!strcasecmp(flag, "omit"))
00970       return AST_CDR_OMIT;
00971    if (!strcasecmp(flag, "billing"))
00972       return AST_CDR_BILLING;
00973    if (!strcasecmp(flag, "documentation"))
00974       return AST_CDR_DOCUMENTATION;
00975    return -1;
00976 }
00977 
00978 static void post_cdr(struct ast_cdr *cdr)
00979 {
00980    char *chan;
00981    struct ast_cdr_beitem *i;
00982 
00983    for ( ; cdr ; cdr = cdr->next) {
00984       if (!unanswered && cdr->disposition < AST_CDR_ANSWERED && (ast_strlen_zero(cdr->channel) || ast_strlen_zero(cdr->dstchannel))) {
00985          /* For people, who don't want to see unanswered single-channel events */
00986          ast_set_flag(cdr, AST_CDR_FLAG_POST_DISABLED);
00987          continue;
00988       }
00989 
00990       chan = S_OR(cdr->channel, "<unknown>");
00991       check_post(cdr);
00992       if (ast_tvzero(cdr->end))
00993          ast_log(LOG_WARNING, "CDR on channel '%s' lacks end\n", chan);
00994       if (ast_tvzero(cdr->start))
00995          ast_log(LOG_WARNING, "CDR on channel '%s' lacks start\n", chan);
00996       ast_set_flag(cdr, AST_CDR_FLAG_POSTED);
00997       if (ast_test_flag(cdr, AST_CDR_FLAG_POST_DISABLED))
00998          continue;
00999       AST_LIST_LOCK(&be_list);
01000       AST_LIST_TRAVERSE(&be_list, i, list) {
01001          i->be(cdr);
01002       }
01003       AST_LIST_UNLOCK(&be_list);
01004    }
01005 }
01006 
01007 void ast_cdr_reset(struct ast_cdr *cdr, struct ast_flags *_flags)
01008 {
01009    struct ast_cdr *dup;
01010    struct ast_flags flags = { 0 };
01011 
01012    if (_flags)
01013       ast_copy_flags(&flags, _flags, AST_FLAGS_ALL);
01014 
01015    for ( ; cdr ; cdr = cdr->next) {
01016       /* Detach if post is requested */
01017       if (ast_test_flag(&flags, AST_CDR_FLAG_LOCKED) || !ast_test_flag(cdr, AST_CDR_FLAG_LOCKED)) {
01018          if (ast_test_flag(&flags, AST_CDR_FLAG_POSTED)) {
01019             ast_cdr_end(cdr);
01020             if ((dup = ast_cdr_dup(cdr))) {
01021                ast_cdr_detach(dup);
01022             }
01023             ast_set_flag(cdr, AST_CDR_FLAG_POSTED);
01024          }
01025 
01026          /* clear variables */
01027          if (!ast_test_flag(&flags, AST_CDR_FLAG_KEEP_VARS)) {
01028             ast_cdr_free_vars(cdr, 0);
01029          }
01030 
01031          /* Reset to initial state */
01032          ast_clear_flag(cdr, AST_FLAGS_ALL); 
01033          memset(&cdr->start, 0, sizeof(cdr->start));
01034          memset(&cdr->end, 0, sizeof(cdr->end));
01035          memset(&cdr->answer, 0, sizeof(cdr->answer));
01036          cdr->billsec = 0;
01037          cdr->duration = 0;
01038          ast_cdr_start(cdr);
01039          cdr->disposition = AST_CDR_NULL;
01040       }
01041    }
01042 }
01043 
01044 struct ast_cdr *ast_cdr_append(struct ast_cdr *cdr, struct ast_cdr *newcdr) 
01045 {
01046    struct ast_cdr *ret;
01047 
01048    if (cdr) {
01049       ret = cdr;
01050 
01051       while (cdr->next)
01052          cdr = cdr->next;
01053       cdr->next = newcdr;
01054    } else {
01055       ret = newcdr;
01056    }
01057 
01058    return ret;
01059 }
01060 
01061 /*! \note Don't call without cdr_batch_lock */
01062 static void reset_batch(void)
01063 {
01064    batch->size = 0;
01065    batch->head = NULL;
01066    batch->tail = NULL;
01067 }
01068 
01069 /*! \note Don't call without cdr_batch_lock */
01070 static int init_batch(void)
01071 {
01072    /* This is the single meta-batch used to keep track of all CDRs during the entire life of the program */
01073    if (!(batch = ast_malloc(sizeof(*batch))))
01074       return -1;
01075 
01076    reset_batch();
01077 
01078    return 0;
01079 }
01080 
01081 static void *do_batch_backend_process(void *data)
01082 {
01083    struct ast_cdr_batch_item *processeditem;
01084    struct ast_cdr_batch_item *batchitem = data;
01085 
01086    /* Push each CDR into storage mechanism(s) and free all the memory */
01087    while (batchitem) {
01088       post_cdr(batchitem->cdr);
01089       ast_cdr_free(batchitem->cdr);
01090       processeditem = batchitem;
01091       batchitem = batchitem->next;
01092       free(processeditem);
01093    }
01094 
01095    return NULL;
01096 }
01097 
01098 void ast_cdr_submit_batch(int shutdown)
01099 {
01100    struct ast_cdr_batch_item *oldbatchitems = NULL;
01101    pthread_attr_t attr;
01102    pthread_t batch_post_thread = AST_PTHREADT_NULL;
01103 
01104    /* if there's no batch, or no CDRs in the batch, then there's nothing to do */
01105    if (!batch || !batch->head)
01106       return;
01107 
01108    /* move the old CDRs aside, and prepare a new CDR batch */
01109    ast_mutex_lock(&cdr_batch_lock);
01110    oldbatchitems = batch->head;
01111    reset_batch();
01112    ast_mutex_unlock(&cdr_batch_lock);
01113 
01114    /* if configured, spawn a new thread to post these CDRs,
01115       also try to save as much as possible if we are shutting down safely */
01116    if (batchscheduleronly || shutdown) {
01117       if (option_debug)
01118          ast_log(LOG_DEBUG, "CDR single-threaded batch processing begins now\n");
01119       do_batch_backend_process(oldbatchitems);
01120    } else {
01121       pthread_attr_init(&attr);
01122       pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED);
01123       if (ast_pthread_create_background(&batch_post_thread, &attr, do_batch_backend_process, oldbatchitems)) {
01124          ast_log(LOG_WARNING, "CDR processing thread could not detach, now trying in this thread\n");
01125          do_batch_backend_process(oldbatchitems);
01126       } else {
01127          if (option_debug)
01128             ast_log(LOG_DEBUG, "CDR multi-threaded batch processing begins now\n");
01129       }
01130       pthread_attr_destroy(&attr);
01131    }
01132 }
01133 
01134 static int submit_scheduled_batch(const void *data)
01135 {
01136    ast_cdr_submit_batch(0);
01137    /* manually reschedule from this point in time */
01138    cdr_sched = ast_sched_add(sched, batchtime * 1000, submit_scheduled_batch, NULL);
01139    /* returning zero so the scheduler does not automatically reschedule */
01140    return 0;
01141 }
01142 
01143 static void submit_unscheduled_batch(void)
01144 {
01145    /* this is okay since we are not being called from within the scheduler */
01146    AST_SCHED_DEL(sched, cdr_sched);
01147    /* schedule the submission to occur ASAP (1 ms) */
01148    cdr_sched = ast_sched_add(sched, 1, submit_scheduled_batch, NULL);
01149    /* signal the do_cdr thread to wakeup early and do some work (that lazy thread ;) */
01150    ast_mutex_lock(&cdr_pending_lock);
01151    ast_cond_signal(&cdr_pending_cond);
01152    ast_mutex_unlock(&cdr_pending_lock);
01153 }
01154 
01155 void ast_cdr_detach(struct ast_cdr *cdr)
01156 {
01157    struct ast_cdr_batch_item *newtail;
01158    int curr;
01159 
01160    if (!cdr)
01161       return;
01162 
01163    /* maybe they disabled CDR stuff completely, so just drop it */
01164    if (!enabled) {
01165       if (option_debug)
01166          ast_log(LOG_DEBUG, "Dropping CDR !\n");
01167       ast_set_flag(cdr, AST_CDR_FLAG_POST_DISABLED);
01168       ast_cdr_free(cdr);
01169       return;
01170    }
01171 
01172    /* post stuff immediately if we are not in batch mode, this is legacy behaviour */
01173    if (!batchmode) {
01174       post_cdr(cdr);
01175       ast_cdr_free(cdr);
01176       return;
01177    }
01178 
01179    /* otherwise, each CDR gets put into a batch list (at the end) */
01180    if (option_debug)
01181       ast_log(LOG_DEBUG, "CDR detaching from this thread\n");
01182 
01183    /* we'll need a new tail for every CDR */
01184    if (!(newtail = ast_calloc(1, sizeof(*newtail)))) {
01185       post_cdr(cdr);
01186       ast_cdr_free(cdr);
01187       return;
01188    }
01189 
01190    /* don't traverse a whole list (just keep track of the tail) */
01191    ast_mutex_lock(&cdr_batch_lock);
01192    if (!batch)
01193       init_batch();
01194    if (!batch->head) {
01195       /* new batch is empty, so point the head at the new tail */
01196       batch->head = newtail;
01197    } else {
01198       /* already got a batch with something in it, so just append a new tail */
01199       batch->tail->next = newtail;
01200    }
01201    newtail->cdr = cdr;
01202    batch->tail = newtail;
01203    curr = batch->size++;
01204    ast_mutex_unlock(&cdr_batch_lock);
01205 
01206    /* if we have enough stuff to post, then do it */
01207    if (curr >= (batchsize - 1))
01208       submit_unscheduled_batch();
01209 }
01210 
01211 static void *do_cdr(void *data)
01212 {
01213    struct timespec timeout;
01214    int schedms;
01215    int numevents = 0;
01216 
01217    for(;;) {
01218       struct timeval now;
01219       schedms = ast_sched_wait(sched);
01220       /* this shouldn't happen, but provide a 1 second default just in case */
01221       if (schedms <= 0)
01222          schedms = 1000;
01223       now = ast_tvadd(ast_tvnow(), ast_samp2tv(schedms, 1000));
01224       timeout.tv_sec = now.tv_sec;
01225       timeout.tv_nsec = now.tv_usec * 1000;
01226       /* prevent stuff from clobbering cdr_pending_cond, then wait on signals sent to it until the timeout expires */
01227       ast_mutex_lock(&cdr_pending_lock);
01228       ast_cond_timedwait(&cdr_pending_cond, &cdr_pending_lock, &timeout);
01229       numevents = ast_sched_runq(sched);
01230       ast_mutex_unlock(&cdr_pending_lock);
01231       if (option_debug > 1)
01232          ast_log(LOG_DEBUG, "Processed %d scheduled CDR batches from the run queue\n", numevents);
01233    }
01234 
01235    return NULL;
01236 }
01237 
01238 static int handle_cli_status(int fd, int argc, char *argv[])
01239 {
01240    struct ast_cdr_beitem *beitem=NULL;
01241    int cnt=0;
01242    long nextbatchtime=0;
01243 
01244    if (argc > 2)
01245       return RESULT_SHOWUSAGE;
01246 
01247    ast_cli(fd, "CDR logging: %s\n", enabled ? "enabled" : "disabled");
01248    ast_cli(fd, "CDR mode: %s\n", batchmode ? "batch" : "simple");
01249    if (enabled) {
01250       ast_cli(fd, "CDR output unanswered calls: %s\n", unanswered ? "yes" : "no");
01251       if (batchmode) {
01252          if (batch)
01253             cnt = batch->size;
01254          if (cdr_sched > -1)
01255             nextbatchtime = ast_sched_when(sched, cdr_sched);
01256          ast_cli(fd, "CDR safe shut down: %s\n", batchsafeshutdown ? "enabled" : "disabled");
01257          ast_cli(fd, "CDR batch threading model: %s\n", batchscheduleronly ? "scheduler only" : "scheduler plus separate threads");
01258          ast_cli(fd, "CDR current batch size: %d record%s\n", cnt, (cnt != 1) ? "s" : "");
01259          ast_cli(fd, "CDR maximum batch size: %d record%s\n", batchsize, (batchsize != 1) ? "s" : "");
01260          ast_cli(fd, "CDR maximum batch time: %d second%s\n", batchtime, (batchtime != 1) ? "s" : "");
01261          ast_cli(fd, "CDR next scheduled batch processing time: %ld second%s\n", nextbatchtime, (nextbatchtime != 1) ? "s" : "");
01262       }
01263       AST_LIST_LOCK(&be_list);
01264       AST_LIST_TRAVERSE(&be_list, beitem, list) {
01265          ast_cli(fd, "CDR registered backend: %s\n", beitem->name);
01266       }
01267       AST_LIST_UNLOCK(&be_list);
01268    }
01269 
01270    return 0;
01271 }
01272 
01273 static int handle_cli_submit(int fd, int argc, char *argv[])
01274 {
01275    if (argc > 2)
01276       return RESULT_SHOWUSAGE;
01277 
01278    submit_unscheduled_batch();
01279    ast_cli(fd, "Submitted CDRs to backend engines for processing.  This may take a while.\n");
01280 
01281    return 0;
01282 }
01283 
01284 static struct ast_cli_entry cli_submit = {
01285    { "cdr", "submit", NULL },
01286    handle_cli_submit, "Posts all pending batched CDR data",
01287    "Usage: cdr submit\n"
01288    "       Posts all pending batched CDR data to the configured CDR backend engine modules.\n"
01289 };
01290 
01291 static struct ast_cli_entry cli_status = {
01292    { "cdr", "status", NULL },
01293    handle_cli_status, "Display the CDR status",
01294    "Usage: cdr status\n"
01295    "  Displays the Call Detail Record engine system status.\n"
01296 };
01297 
01298 static int do_reload(void)
01299 {
01300    struct ast_config *config;
01301    const char *enabled_value;
01302    const char *unanswered_value;
01303    const char *batched_value;
01304    const char *scheduleronly_value;
01305    const char *batchsafeshutdown_value;
01306    const char *size_value;
01307    const char *time_value;
01308    const char *end_before_h_value;
01309    int cfg_size;
01310    int cfg_time;
01311    int was_enabled;
01312    int was_batchmode;
01313    int res=0;
01314 
01315    ast_mutex_lock(&cdr_batch_lock);
01316 
01317    batchsize = BATCH_SIZE_DEFAULT;
01318    batchtime = BATCH_TIME_DEFAULT;
01319    batchscheduleronly = BATCH_SCHEDULER_ONLY_DEFAULT;
01320    batchsafeshutdown = BATCH_SAFE_SHUTDOWN_DEFAULT;
01321    was_enabled = enabled;
01322    was_batchmode = batchmode;
01323    enabled = 1;
01324    batchmode = 0;
01325 
01326    /* don't run the next scheduled CDR posting while reloading */
01327    AST_SCHED_DEL(sched, cdr_sched);
01328 
01329    if ((config = ast_config_load("cdr.conf"))) {
01330       if ((enabled_value = ast_variable_retrieve(config, "general", "enable"))) {
01331          enabled = ast_true(enabled_value);
01332       }
01333       if ((unanswered_value = ast_variable_retrieve(config, "general", "unanswered"))) {
01334          unanswered = ast_true(unanswered_value);
01335       }
01336       if ((batched_value = ast_variable_retrieve(config, "general", "batch"))) {
01337          batchmode = ast_true(batched_value);
01338       }
01339       if ((scheduleronly_value = ast_variable_retrieve(config, "general", "scheduleronly"))) {
01340          batchscheduleronly = ast_true(scheduleronly_value);
01341       }
01342       if ((batchsafeshutdown_value = ast_variable_retrieve(config, "general", "safeshutdown"))) {
01343          batchsafeshutdown = ast_true(batchsafeshutdown_value);
01344       }
01345       if ((size_value = ast_variable_retrieve(config, "general", "size"))) {
01346          if (sscanf(size_value, "%d", &cfg_size) < 1)
01347             ast_log(LOG_WARNING, "Unable to convert '%s' to a numeric value.\n", size_value);
01348          else if (size_value < 0)
01349             ast_log(LOG_WARNING, "Invalid maximum batch size '%d' specified, using default\n", cfg_size);
01350          else
01351             batchsize = cfg_size;
01352       }
01353       if ((time_value = ast_variable_retrieve(config, "general", "time"))) {
01354          if (sscanf(time_value, "%d", &cfg_time) < 1)
01355             ast_log(LOG_WARNING, "Unable to convert '%s' to a numeric value.\n", time_value);
01356          else if (time_value < 0)
01357             ast_log(LOG_WARNING, "Invalid maximum batch time '%d' specified, using default\n", cfg_time);
01358          else
01359             batchtime = cfg_time;
01360       }
01361       if ((end_before_h_value = ast_variable_retrieve(config, "general", "endbeforehexten")))
01362          ast_set2_flag(&ast_options, ast_true(end_before_h_value), AST_OPT_FLAG_END_CDR_BEFORE_H_EXTEN);
01363    }
01364 
01365    if (enabled && !batchmode) {
01366       ast_log(LOG_NOTICE, "CDR simple logging enabled.\n");
01367    } else if (enabled && batchmode) {
01368       cdr_sched = ast_sched_add(sched, batchtime * 1000, submit_scheduled_batch, NULL);
01369       ast_log(LOG_NOTICE, "CDR batch mode logging enabled, first of either size %d or time %d seconds.\n", batchsize, batchtime);
01370    } else {
01371       ast_log(LOG_NOTICE, "CDR logging disabled, data will be lost.\n");
01372    }
01373 
01374    /* if this reload enabled the CDR batch mode, create the background thread
01375       if it does not exist */
01376    if (enabled && batchmode && (!was_enabled || !was_batchmode) && (cdr_thread == AST_PTHREADT_NULL)) {
01377       ast_cond_init(&cdr_pending_cond, NULL);
01378       if (ast_pthread_create_background(&cdr_thread, NULL, do_cdr, NULL) < 0) {
01379          ast_log(LOG_ERROR, "Unable to start CDR thread.\n");
01380          AST_SCHED_DEL(sched, cdr_sched);
01381       } else {
01382          ast_cli_register(&cli_submit);
01383          ast_register_atexit(ast_cdr_engine_term);
01384          res = 0;
01385       }
01386    /* if this reload disabled the CDR and/or batch mode and there is a background thread,
01387       kill it */
01388    } else if (((!enabled && was_enabled) || (!batchmode && was_batchmode)) && (cdr_thread != AST_PTHREADT_NULL)) {
01389       /* wake up the thread so it will exit */
01390       pthread_cancel(cdr_thread);
01391       pthread_kill(cdr_thread, SIGURG);
01392       pthread_join(cdr_thread, NULL);
01393       cdr_thread = AST_PTHREADT_NULL;
01394       ast_cond_destroy(&cdr_pending_cond);
01395       ast_cli_unregister(&cli_submit);
01396       ast_unregister_atexit(ast_cdr_engine_term);
01397       res = 0;
01398       /* if leaving batch mode, then post the CDRs in the batch,
01399          and don't reschedule, since we are stopping CDR logging */
01400       if (!batchmode && was_batchmode) {
01401          ast_cdr_engine_term();
01402       }
01403    } else {
01404       res = 0;
01405    }
01406 
01407    ast_mutex_unlock(&cdr_batch_lock);
01408    ast_config_destroy(config);
01409 
01410    return res;
01411 }
01412 
01413 int ast_cdr_engine_init(void)
01414 {
01415    int res;
01416 
01417    sched = sched_context_create();
01418    if (!sched) {
01419       ast_log(LOG_ERROR, "Unable to create schedule context.\n");
01420       return -1;
01421    }
01422 
01423    ast_cli_register(&cli_status);
01424 
01425    res = do_reload();
01426    if (res) {
01427       ast_mutex_lock(&cdr_batch_lock);
01428       res = init_batch();
01429       ast_mutex_unlock(&cdr_batch_lock);
01430    }
01431 
01432    return res;
01433 }
01434 
01435 /* \note This actually gets called a couple of times at shutdown.  Once, before we start
01436    hanging up channels, and then again, after the channel hangup timeout expires */
01437 void ast_cdr_engine_term(void)
01438 {
01439    ast_cdr_submit_batch(batchsafeshutdown);
01440 }
01441 
01442 int ast_cdr_engine_reload(void)
01443 {
01444    return do_reload();
01445 }
01446 

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