Sat Aug 6 00:39:23 2011

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: 287114 $")
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 int check_cdr_enabled()
00106 {
00107    return enabled;
00108 }
00109 
00110 /*! Register a CDR driver. Each registered CDR driver generates a CDR 
00111    \return 0 on success, -1 on failure 
00112 */
00113 int ast_cdr_register(const char *name, const char *desc, ast_cdrbe be)
00114 {
00115    struct ast_cdr_beitem *i;
00116 
00117    if (!name)
00118       return -1;
00119    if (!be) {
00120       ast_log(LOG_WARNING, "CDR engine '%s' lacks backend\n", name);
00121       return -1;
00122    }
00123 
00124    AST_LIST_LOCK(&be_list);
00125    AST_LIST_TRAVERSE(&be_list, i, list) {
00126       if (!strcasecmp(name, i->name))
00127          break;
00128    }
00129    AST_LIST_UNLOCK(&be_list);
00130 
00131    if (i) {
00132       ast_log(LOG_WARNING, "Already have a CDR backend called '%s'\n", name);
00133       return -1;
00134    }
00135 
00136    if (!(i = ast_calloc(1, sizeof(*i))))  
00137       return -1;
00138 
00139    i->be = be;
00140    ast_copy_string(i->name, name, sizeof(i->name));
00141    ast_copy_string(i->desc, desc, sizeof(i->desc));
00142 
00143    AST_LIST_LOCK(&be_list);
00144    AST_LIST_INSERT_HEAD(&be_list, i, list);
00145    AST_LIST_UNLOCK(&be_list);
00146 
00147    return 0;
00148 }
00149 
00150 /*! unregister a CDR driver */
00151 void ast_cdr_unregister(const char *name)
00152 {
00153    struct ast_cdr_beitem *i = NULL;
00154 
00155    AST_LIST_LOCK(&be_list);
00156    AST_LIST_TRAVERSE_SAFE_BEGIN(&be_list, i, list) {
00157       if (!strcasecmp(name, i->name)) {
00158          AST_LIST_REMOVE_CURRENT(&be_list, list);
00159          if (option_verbose > 1)
00160             ast_verbose(VERBOSE_PREFIX_2 "Unregistered '%s' CDR backend\n", name);
00161          free(i);
00162          break;
00163       }
00164    }
00165    AST_LIST_TRAVERSE_SAFE_END;
00166    AST_LIST_UNLOCK(&be_list);
00167 }
00168 
00169 int ast_cdr_isset_unanswered(void)
00170 {
00171    return unanswered;
00172 }
00173 
00174 /*! Duplicate a CDR record 
00175    \returns Pointer to new CDR record
00176 */
00177 struct ast_cdr *ast_cdr_dup(struct ast_cdr *cdr) 
00178 {
00179    struct ast_cdr *newcdr;
00180    
00181    if (!cdr) /* don't die if we get a null cdr pointer */
00182       return NULL;
00183    newcdr = ast_cdr_alloc();
00184    if (!newcdr)
00185       return NULL;
00186 
00187    memcpy(newcdr, cdr, sizeof(*newcdr));
00188    /* The varshead is unusable, volatile even, after the memcpy so we take care of that here */
00189    memset(&newcdr->varshead, 0, sizeof(newcdr->varshead));
00190    ast_cdr_copy_vars(newcdr, cdr);
00191    newcdr->next = NULL;
00192 
00193    return newcdr;
00194 }
00195 
00196 static const char *ast_cdr_getvar_internal(struct ast_cdr *cdr, const char *name, int recur) 
00197 {
00198    if (ast_strlen_zero(name))
00199       return NULL;
00200 
00201    for (; cdr; cdr = recur ? cdr->next : NULL) {
00202       struct ast_var_t *variables;
00203       struct varshead *headp = &cdr->varshead;
00204       AST_LIST_TRAVERSE(headp, variables, entries) {
00205          if (!strcasecmp(name, ast_var_name(variables)))
00206             return ast_var_value(variables);
00207       }
00208    }
00209 
00210    return NULL;
00211 }
00212 
00213 static void cdr_get_tv(struct timeval tv, const char *fmt, char *buf, int bufsize)
00214 {
00215    if (fmt == NULL) {   /* raw mode */
00216       snprintf(buf, bufsize, "%ld.%06ld", (long)tv.tv_sec, (long)tv.tv_usec);
00217    } else {  
00218       time_t t = tv.tv_sec;
00219       if (t) {
00220          struct tm tm;
00221 
00222          ast_localtime(&t, &tm, NULL);
00223          strftime(buf, bufsize, fmt, &tm);
00224       }
00225    }
00226 }
00227 
00228 /*! CDR channel variable retrieval */
00229 void ast_cdr_getvar(struct ast_cdr *cdr, const char *name, char **ret, char *workspace, int workspacelen, int recur, int raw) 
00230 {
00231    const char *fmt = "%Y-%m-%d %T";
00232    const char *varbuf;
00233 
00234    if (!cdr)  /* don't die if the cdr is null */
00235       return;
00236 
00237    *ret = NULL;
00238    /* special vars (the ones from the struct ast_cdr when requested by name) 
00239       I'd almost say we should convert all the stringed vals to vars */
00240 
00241    if (!strcasecmp(name, "clid"))
00242       ast_copy_string(workspace, cdr->clid, workspacelen);
00243    else if (!strcasecmp(name, "src"))
00244       ast_copy_string(workspace, cdr->src, workspacelen);
00245    else if (!strcasecmp(name, "dst"))
00246       ast_copy_string(workspace, cdr->dst, workspacelen);
00247    else if (!strcasecmp(name, "dcontext"))
00248       ast_copy_string(workspace, cdr->dcontext, workspacelen);
00249    else if (!strcasecmp(name, "channel"))
00250       ast_copy_string(workspace, cdr->channel, workspacelen);
00251    else if (!strcasecmp(name, "dstchannel"))
00252       ast_copy_string(workspace, cdr->dstchannel, workspacelen);
00253    else if (!strcasecmp(name, "lastapp"))
00254       ast_copy_string(workspace, cdr->lastapp, workspacelen);
00255    else if (!strcasecmp(name, "lastdata"))
00256       ast_copy_string(workspace, cdr->lastdata, workspacelen);
00257    else if (!strcasecmp(name, "start"))
00258       cdr_get_tv(cdr->start, raw ? NULL : fmt, workspace, workspacelen);
00259    else if (!strcasecmp(name, "answer"))
00260       cdr_get_tv(cdr->answer, raw ? NULL : fmt, workspace, workspacelen);
00261    else if (!strcasecmp(name, "end"))
00262       cdr_get_tv(cdr->end, raw ? NULL : fmt, workspace, workspacelen);
00263    else if (!strcasecmp(name, "duration"))
00264       snprintf(workspace, workspacelen, "%ld", cdr->duration);
00265    else if (!strcasecmp(name, "billsec"))
00266       snprintf(workspace, workspacelen, "%ld", cdr->billsec);
00267    else if (!strcasecmp(name, "disposition")) {
00268       if (raw) {
00269          snprintf(workspace, workspacelen, "%ld", cdr->disposition);
00270       } else {
00271          ast_copy_string(workspace, ast_cdr_disp2str(cdr->disposition), workspacelen);
00272       }
00273    } else if (!strcasecmp(name, "amaflags")) {
00274       if (raw) {
00275          snprintf(workspace, workspacelen, "%ld", cdr->amaflags);
00276       } else {
00277          ast_copy_string(workspace, ast_cdr_flags2str(cdr->amaflags), workspacelen);
00278       }
00279    } else if (!strcasecmp(name, "accountcode"))
00280       ast_copy_string(workspace, cdr->accountcode, workspacelen);
00281    else if (!strcasecmp(name, "uniqueid"))
00282       ast_copy_string(workspace, cdr->uniqueid, workspacelen);
00283    else if (!strcasecmp(name, "userfield"))
00284       ast_copy_string(workspace, cdr->userfield, workspacelen);
00285    else if ((varbuf = ast_cdr_getvar_internal(cdr, name, recur)))
00286       ast_copy_string(workspace, varbuf, workspacelen);
00287    else
00288       workspace[0] = '\0';
00289 
00290    if (!ast_strlen_zero(workspace))
00291       *ret = workspace;
00292 }
00293 
00294 /* readonly cdr variables */
00295 static   const char *cdr_readonly_vars[] = { "clid", "src", "dst", "dcontext", "channel", "dstchannel",
00296                 "lastapp", "lastdata", "start", "answer", "end", "duration",
00297                 "billsec", "disposition", "amaflags", "accountcode", "uniqueid",
00298                 "userfield", NULL };
00299 /*! Set a CDR channel variable 
00300    \note You can't set the CDR variables that belong to the actual CDR record, like "billsec".
00301 */
00302 int ast_cdr_setvar(struct ast_cdr *cdr, const char *name, const char *value, int recur) 
00303 {
00304    struct ast_var_t *newvariable;
00305    struct varshead *headp;
00306    int x;
00307    
00308    if (!cdr)  /* don't die if the cdr is null */
00309       return -1;
00310    
00311    for(x = 0; cdr_readonly_vars[x]; x++) {
00312       if (!strcasecmp(name, cdr_readonly_vars[x])) {
00313          ast_log(LOG_ERROR, "Attempt to set the '%s' read-only variable!.\n", name);
00314          return -1;
00315       }
00316    }
00317 
00318    if (!cdr) {
00319       ast_log(LOG_ERROR, "Attempt to set a variable on a nonexistent CDR record.\n");
00320       return -1;
00321    }
00322 
00323    for (; cdr; cdr = recur ? cdr->next : NULL) {
00324       if (ast_test_flag(cdr, AST_CDR_FLAG_DONT_TOUCH) && ast_test_flag(cdr, AST_CDR_FLAG_LOCKED))
00325          continue;
00326       headp = &cdr->varshead;
00327       AST_LIST_TRAVERSE_SAFE_BEGIN(headp, newvariable, entries) {
00328          if (!strcasecmp(ast_var_name(newvariable), name)) {
00329             /* there is already such a variable, delete it */
00330             AST_LIST_REMOVE_CURRENT(headp, entries);
00331             ast_var_delete(newvariable);
00332             break;
00333          }
00334       }
00335       AST_LIST_TRAVERSE_SAFE_END;
00336       
00337       if (value) {
00338          newvariable = ast_var_assign(name, value);
00339          AST_LIST_INSERT_HEAD(headp, newvariable, entries);
00340       }
00341    }
00342 
00343    return 0;
00344 }
00345 
00346 int ast_cdr_copy_vars(struct ast_cdr *to_cdr, struct ast_cdr *from_cdr)
00347 {
00348    struct ast_var_t *variables, *newvariable = NULL;
00349    struct varshead *headpa, *headpb;
00350    const char *var, *val;
00351    int x = 0;
00352 
00353    if (!to_cdr || !from_cdr) /* don't die if one of the pointers is null */
00354       return 0;
00355 
00356    headpa = &from_cdr->varshead;
00357    headpb = &to_cdr->varshead;
00358 
00359    AST_LIST_TRAVERSE(headpa,variables,entries) {
00360       if (variables &&
00361           (var = ast_var_name(variables)) && (val = ast_var_value(variables)) &&
00362           !ast_strlen_zero(var) && !ast_strlen_zero(val)) {
00363          newvariable = ast_var_assign(var, val);
00364          AST_LIST_INSERT_HEAD(headpb, newvariable, entries);
00365          x++;
00366       }
00367    }
00368 
00369    return x;
00370 }
00371 
00372 int ast_cdr_serialize_variables(struct ast_cdr *cdr, char *buf, size_t size, char delim, char sep, int recur) 
00373 {
00374    struct ast_var_t *variables;
00375    const char *var;
00376    char *tmp;
00377    char workspace[256];
00378    int total = 0, x = 0, i;
00379 
00380    memset(buf, 0, size);
00381 
00382    for (; cdr; cdr = recur ? cdr->next : NULL) {
00383       if (++x > 1)
00384          ast_build_string(&buf, &size, "\n");
00385 
00386       AST_LIST_TRAVERSE(&cdr->varshead, variables, entries) {
00387          if (!(var = ast_var_name(variables))) {
00388             continue;
00389          }
00390 
00391          if (ast_build_string(&buf, &size, "level %d: %s%c%s%c", x, var, delim, S_OR(ast_var_value(variables), ""), sep)) {
00392             ast_log(LOG_ERROR, "Data Buffer Size Exceeded!\n");
00393             break;
00394          }
00395 
00396          total++;
00397       }
00398 
00399       for (i = 0; cdr_readonly_vars[i]; i++) {
00400          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 */
00401          ast_cdr_getvar(cdr, cdr_readonly_vars[i], &tmp, workspace, sizeof(workspace), 0, 0);
00402          if (!tmp)
00403             continue;
00404          
00405          if (ast_build_string(&buf, &size, "level %d: %s%c%s%c", x, cdr_readonly_vars[i], delim, tmp, sep)) {
00406             ast_log(LOG_ERROR, "Data Buffer Size Exceeded!\n");
00407             break;
00408          } else
00409             total++;
00410       }
00411    }
00412 
00413    return total;
00414 }
00415 
00416 
00417 void ast_cdr_free_vars(struct ast_cdr *cdr, int recur)
00418 {
00419 
00420    /* clear variables */
00421    for (; cdr; cdr = recur ? cdr->next : NULL) {
00422       struct ast_var_t *vardata;
00423       struct varshead *headp = &cdr->varshead;
00424       while ((vardata = AST_LIST_REMOVE_HEAD(headp, entries)))
00425          ast_var_delete(vardata);
00426    }
00427 }
00428 
00429 /*! \brief  print a warning if cdr already posted */
00430 static void check_post(struct ast_cdr *cdr)
00431 {
00432    if (!cdr)
00433       return;
00434    if (ast_test_flag(cdr, AST_CDR_FLAG_POSTED))
00435       ast_log(LOG_NOTICE, "CDR on channel '%s' already posted\n", S_OR(cdr->channel, "<unknown>"));
00436 }
00437 
00438 void ast_cdr_free(struct ast_cdr *cdr)
00439 {
00440 
00441    while (cdr) {
00442       struct ast_cdr *next = cdr->next;
00443       char *chan = S_OR(cdr->channel, "<unknown>");
00444       if (option_verbose > 1 && !ast_test_flag(cdr, AST_CDR_FLAG_POSTED) && !ast_test_flag(cdr, AST_CDR_FLAG_POST_DISABLED))
00445          ast_verbose(VERBOSE_PREFIX_2 "CDR on channel '%s' not posted\n", chan);
00446       if (option_verbose > 1 && ast_tvzero(cdr->end))
00447          ast_verbose(VERBOSE_PREFIX_2 "CDR on channel '%s' lacks end\n", chan);
00448       if (option_verbose > 1 && ast_tvzero(cdr->start))
00449          ast_verbose(VERBOSE_PREFIX_2 "CDR on channel '%s' lacks start\n", chan);
00450 
00451       ast_cdr_free_vars(cdr, 0);
00452       free(cdr);
00453       cdr = next;
00454    }
00455 }
00456 
00457 /*! \brief the same as a cdr_free call, only with no checks; just get rid of it */
00458 void ast_cdr_discard(struct ast_cdr *cdr)
00459 {
00460    while (cdr) {
00461       struct ast_cdr *next = cdr->next;
00462 
00463       ast_cdr_free_vars(cdr, 0);
00464       free(cdr);
00465       cdr = next;
00466    }
00467 }
00468 
00469 struct ast_cdr *ast_cdr_alloc(void)
00470 {
00471    struct ast_cdr *x = ast_calloc(1, sizeof(struct ast_cdr));
00472    if (!x)
00473       ast_log(LOG_ERROR,"Allocation Failure for a CDR!\n");
00474    return x;
00475 }
00476 
00477 static void cdr_merge_vars(struct ast_cdr *to, struct ast_cdr *from)
00478 {
00479    struct ast_var_t *variablesfrom,*variablesto;
00480    struct varshead *headpfrom = &to->varshead;
00481    struct varshead *headpto = &from->varshead;
00482    AST_LIST_TRAVERSE_SAFE_BEGIN(headpfrom, variablesfrom, entries) {
00483       /* for every var in from, stick it in to */
00484       const char *fromvarname = NULL, *fromvarval = NULL;
00485       const char *tovarname = NULL, *tovarval = NULL;
00486       fromvarname = ast_var_name(variablesfrom);
00487       fromvarval = ast_var_value(variablesfrom);
00488       tovarname = 0;
00489 
00490       /* now, quick see if that var is in the 'to' cdr already */
00491       AST_LIST_TRAVERSE(headpto, variablesto, entries) {
00492 
00493          /* now, quick see if that var is in the 'to' cdr already */
00494          if ( strcasecmp(fromvarname, ast_var_name(variablesto)) == 0 ) {
00495             tovarname = ast_var_name(variablesto);
00496             tovarval = ast_var_value(variablesto);
00497             break;
00498          }
00499       }
00500       if (tovarname && strcasecmp(fromvarval,tovarval) != 0) {  /* this message here to see how irritating the userbase finds it */
00501          ast_log(LOG_NOTICE, "Merging CDR's: variable %s value %s dropped in favor of value %s\n", tovarname, fromvarval, tovarval);
00502          continue;
00503       } else if (tovarname && strcasecmp(fromvarval,tovarval) == 0) /* if they are the same, the job is done */
00504          continue;
00505 
00506       /*rip this var out of the from cdr, and stick it in the to cdr */
00507       AST_LIST_REMOVE_CURRENT(headpfrom, entries);
00508       AST_LIST_INSERT_HEAD(headpto, variablesfrom, entries);
00509    }
00510    AST_LIST_TRAVERSE_SAFE_END;
00511 }
00512 
00513 void ast_cdr_merge(struct ast_cdr *to, struct ast_cdr *from)
00514 {
00515    struct ast_cdr *zcdr;
00516    struct ast_cdr *lto = NULL;
00517    struct ast_cdr *lfrom = NULL;
00518    int discard_from = 0;
00519    
00520    if (!to || !from)
00521       return;
00522 
00523    /* don't merge into locked CDR's -- it's bad business */
00524    if (ast_test_flag(to, AST_CDR_FLAG_LOCKED)) {
00525       zcdr = to; /* safety valve? */
00526       while (to->next) {
00527          lto = to;
00528          to = to->next;
00529       }
00530       
00531       if (ast_test_flag(to, AST_CDR_FLAG_LOCKED)) {
00532          ast_log(LOG_WARNING, "Merging into locked CDR... no choice.");
00533          to = zcdr; /* safety-- if all there are is locked CDR's, then.... ?? */
00534          lto = NULL;
00535       }
00536    }
00537 
00538    if (ast_test_flag(from, AST_CDR_FLAG_LOCKED)) {
00539       discard_from = 1;
00540       if (lto) {
00541          struct ast_cdr *llfrom = NULL;
00542          /* insert the from stuff after lto */
00543          lto->next = from;
00544          lfrom = from;
00545          while (lfrom && lfrom->next) {
00546             if (!lfrom->next->next)
00547                llfrom = lfrom;
00548             lfrom = lfrom->next; 
00549          }
00550          /* rip off the last entry and put a copy of the to at the end */
00551          llfrom->next = to;
00552          from = lfrom;
00553       } else {
00554          /* save copy of the current *to cdr */
00555          struct ast_cdr tcdr;
00556          struct ast_cdr *llfrom = NULL;
00557          memcpy(&tcdr, to, sizeof(tcdr));
00558          /* copy in the locked from cdr */
00559          memcpy(to, from, sizeof(*to));
00560          lfrom = from;
00561          while (lfrom && lfrom->next) {
00562             if (!lfrom->next->next)
00563                llfrom = lfrom;
00564             lfrom = lfrom->next; 
00565          }
00566          from->next = NULL;
00567          /* rip off the last entry and put a copy of the to at the end */
00568          if (llfrom == from)
00569             to = to->next = ast_cdr_dup(&tcdr);
00570          else
00571             to = llfrom->next = ast_cdr_dup(&tcdr);
00572          from = lfrom;
00573       }
00574    }
00575    
00576    if (!ast_tvzero(from->start)) {
00577       if (!ast_tvzero(to->start)) {
00578          if (ast_tvcmp(to->start, from->start) > 0 ) {
00579             to->start = from->start; /* use the earliest time */
00580             from->start = ast_tv(0,0); /* we actively "steal" these values */
00581          }
00582          /* else nothing to do */
00583       } else {
00584          to->start = from->start;
00585          from->start = ast_tv(0,0); /* we actively "steal" these values */
00586       }
00587    }
00588    if (!ast_tvzero(from->answer)) {
00589       if (!ast_tvzero(to->answer)) {
00590          if (ast_tvcmp(to->answer, from->answer) > 0 ) {
00591             to->answer = from->answer; /* use the earliest time */
00592             from->answer = ast_tv(0,0); /* we actively "steal" these values */
00593          }
00594          /* we got the earliest answer time, so we'll settle for that? */
00595       } else {
00596          to->answer = from->answer;
00597          from->answer = ast_tv(0,0); /* we actively "steal" these values */
00598       }
00599    }
00600    if (!ast_tvzero(from->end)) {
00601       if (!ast_tvzero(to->end)) {
00602          if (ast_tvcmp(to->end, from->end) < 0 ) {
00603             to->end = from->end; /* use the latest time */
00604             from->end = ast_tv(0,0); /* we actively "steal" these values */
00605             to->duration = to->end.tv_sec - to->start.tv_sec;  /* don't forget to update the duration, billsec, when we set end */
00606             to->billsec = ast_tvzero(to->answer) ? 0 : to->end.tv_sec - to->answer.tv_sec;
00607          }
00608          /* else, nothing to do */
00609       } else {
00610          to->end = from->end;
00611          from->end = ast_tv(0,0); /* we actively "steal" these values */
00612          to->duration = to->end.tv_sec - to->start.tv_sec;
00613          to->billsec = ast_tvzero(to->answer) ? 0 : to->end.tv_sec - to->answer.tv_sec;
00614       }
00615    }
00616    if (to->disposition < from->disposition) {
00617       to->disposition = from->disposition;
00618       from->disposition = AST_CDR_NOANSWER;
00619    }
00620    if (ast_strlen_zero(to->lastapp) && !ast_strlen_zero(from->lastapp)) {
00621       ast_copy_string(to->lastapp, from->lastapp, sizeof(to->lastapp));
00622       from->lastapp[0] = 0; /* theft */
00623    }
00624    if (ast_strlen_zero(to->lastdata) && !ast_strlen_zero(from->lastdata)) {
00625       ast_copy_string(to->lastdata, from->lastdata, sizeof(to->lastdata));
00626       from->lastdata[0] = 0; /* theft */
00627    }
00628    if (ast_strlen_zero(to->dcontext) && !ast_strlen_zero(from->dcontext)) {
00629       ast_copy_string(to->dcontext, from->dcontext, sizeof(to->dcontext));
00630       from->dcontext[0] = 0; /* theft */
00631    }
00632    if (ast_strlen_zero(to->dstchannel) && !ast_strlen_zero(from->dstchannel)) {
00633       ast_copy_string(to->dstchannel, from->dstchannel, sizeof(to->dstchannel));
00634       from->dstchannel[0] = 0; /* theft */
00635    }
00636    if (!ast_strlen_zero(from->channel) && (ast_strlen_zero(to->channel) || !strncasecmp(from->channel, "Agent/", 6))) {
00637       ast_copy_string(to->channel, from->channel, sizeof(to->channel));
00638       from->channel[0] = 0; /* theft */
00639    }
00640    if (ast_strlen_zero(to->src) && !ast_strlen_zero(from->src)) {
00641       ast_copy_string(to->src, from->src, sizeof(to->src));
00642       from->src[0] = 0; /* theft */
00643    }
00644    if (ast_strlen_zero(to->clid) && !ast_strlen_zero(from->clid)) {
00645       ast_copy_string(to->clid, from->clid, sizeof(to->clid));
00646       from->clid[0] = 0; /* theft */
00647    }
00648    if (ast_strlen_zero(to->dst) && !ast_strlen_zero(from->dst)) {
00649       ast_copy_string(to->dst, from->dst, sizeof(to->dst));
00650       from->dst[0] = 0; /* theft */
00651    }
00652    if (!to->amaflags)
00653       to->amaflags = AST_CDR_DOCUMENTATION;
00654    if (!from->amaflags)
00655       from->amaflags = AST_CDR_DOCUMENTATION; /* make sure both amaflags are set to something (DOC is default) */
00656    if (ast_test_flag(from, AST_CDR_FLAG_LOCKED) || (to->amaflags == AST_CDR_DOCUMENTATION && from->amaflags != AST_CDR_DOCUMENTATION)) {
00657       to->amaflags = from->amaflags;
00658    }
00659    if (ast_test_flag(from, AST_CDR_FLAG_LOCKED) || (ast_strlen_zero(to->accountcode) && !ast_strlen_zero(from->accountcode))) {
00660       ast_copy_string(to->accountcode, from->accountcode, sizeof(to->accountcode));
00661    }
00662    if (ast_test_flag(from, AST_CDR_FLAG_LOCKED) || (ast_strlen_zero(to->userfield) && !ast_strlen_zero(from->userfield))) {
00663       ast_copy_string(to->userfield, from->userfield, sizeof(to->userfield));
00664    }
00665    /* flags, varsead, ? */
00666    cdr_merge_vars(from, to);
00667 
00668    if (ast_test_flag(from, AST_CDR_FLAG_KEEP_VARS))
00669       ast_set_flag(to, AST_CDR_FLAG_KEEP_VARS);
00670    if (ast_test_flag(from, AST_CDR_FLAG_POSTED))
00671       ast_set_flag(to, AST_CDR_FLAG_POSTED);
00672    if (ast_test_flag(from, AST_CDR_FLAG_LOCKED))
00673       ast_set_flag(to, AST_CDR_FLAG_LOCKED);
00674    if (ast_test_flag(from, AST_CDR_FLAG_CHILD))
00675       ast_set_flag(to, AST_CDR_FLAG_CHILD);
00676    if (ast_test_flag(from, AST_CDR_FLAG_POST_DISABLED))
00677       ast_set_flag(to, AST_CDR_FLAG_POST_DISABLED);
00678 
00679    /* last, but not least, we need to merge any forked CDRs to the 'to' cdr */
00680    while (from->next) {
00681       /* just rip 'em off the 'from' and insert them on the 'to' */
00682       zcdr = from->next;
00683       from->next = zcdr->next;
00684       zcdr->next = NULL;
00685       /* zcdr is now ripped from the current list; */
00686       ast_cdr_append(to, zcdr);
00687    }
00688    if (discard_from)
00689       ast_cdr_discard(from);
00690 }
00691 
00692 void ast_cdr_start(struct ast_cdr *cdr)
00693 {
00694    char *chan; 
00695 
00696    for (; cdr; cdr = cdr->next) {
00697       if (!ast_test_flag(cdr, AST_CDR_FLAG_LOCKED)) {
00698          chan = S_OR(cdr->channel, "<unknown>");
00699          check_post(cdr);
00700          cdr->start = ast_tvnow();
00701       }
00702    }
00703 }
00704 
00705 void ast_cdr_answer(struct ast_cdr *cdr)
00706 {
00707 
00708    for (; cdr; cdr = cdr->next) {
00709       if (ast_test_flag(cdr, AST_CDR_FLAG_ANSLOCKED)) 
00710          continue;
00711       if (ast_test_flag(cdr, AST_CDR_FLAG_DONT_TOUCH) && ast_test_flag(cdr, AST_CDR_FLAG_LOCKED))
00712          continue;
00713       check_post(cdr);
00714       if (cdr->disposition < AST_CDR_ANSWERED)
00715          cdr->disposition = AST_CDR_ANSWERED;
00716       if (ast_tvzero(cdr->answer))
00717          cdr->answer = ast_tvnow();
00718    }
00719 }
00720 
00721 void ast_cdr_busy(struct ast_cdr *cdr)
00722 {
00723 
00724    for (; cdr; cdr = cdr->next) {
00725       if (!ast_test_flag(cdr, AST_CDR_FLAG_LOCKED)) {
00726          check_post(cdr);
00727          cdr->disposition = AST_CDR_BUSY;
00728       }
00729    }
00730 }
00731 
00732 void ast_cdr_failed(struct ast_cdr *cdr)
00733 {
00734    for (; cdr; cdr = cdr->next) {
00735       check_post(cdr);
00736       if (!ast_test_flag(cdr, AST_CDR_FLAG_LOCKED)) {
00737          if (cdr->disposition < AST_CDR_FAILED)
00738             cdr->disposition = AST_CDR_FAILED;
00739       }
00740    }
00741 }
00742 
00743 void ast_cdr_noanswer(struct ast_cdr *cdr)
00744 {
00745    char *chan; 
00746 
00747    while (cdr) {
00748       chan = !ast_strlen_zero(cdr->channel) ? cdr->channel : "<unknown>";
00749       check_post(cdr);
00750       if (!ast_test_flag(cdr, AST_CDR_FLAG_LOCKED)) {
00751          cdr->disposition = AST_CDR_NOANSWER;
00752       }
00753       cdr = cdr->next;
00754    }
00755 }
00756 
00757 /* everywhere ast_cdr_disposition is called, it will call ast_cdr_failed() 
00758    if ast_cdr_disposition returns a non-zero value */
00759 
00760 int ast_cdr_disposition(struct ast_cdr *cdr, int cause)
00761 {
00762    int res = 0;
00763 
00764    for (; cdr; cdr = cdr->next) {
00765       switch(cause) {  /* handle all the non failure, busy cases, return 0 not to set disposition,
00766                      return -1 to set disposition to FAILED */
00767       case AST_CAUSE_BUSY:
00768          ast_cdr_busy(cdr);
00769          break;
00770       case AST_CAUSE_NO_ANSWER:
00771          ast_cdr_noanswer(cdr);
00772          break;
00773       case AST_CAUSE_NORMAL:
00774          break;
00775       default:
00776          res = -1;
00777       }
00778    }
00779    return res;
00780 }
00781 
00782 void ast_cdr_setdestchan(struct ast_cdr *cdr, const char *chann)
00783 {
00784    for (; cdr; cdr = cdr->next) {
00785       check_post(cdr);
00786       if (!ast_test_flag(cdr, AST_CDR_FLAG_LOCKED))
00787          ast_copy_string(cdr->dstchannel, chann, sizeof(cdr->dstchannel));
00788    }
00789 }
00790 
00791 void ast_cdr_setapp(struct ast_cdr *cdr, char *app, char *data)
00792 {
00793 
00794    for (; cdr; cdr = cdr->next) {
00795       if (!ast_test_flag(cdr, AST_CDR_FLAG_LOCKED)) {
00796          check_post(cdr);
00797          ast_copy_string(cdr->lastapp, S_OR(app, ""), sizeof(cdr->lastapp));
00798          ast_copy_string(cdr->lastdata, S_OR(data, ""), sizeof(cdr->lastdata));
00799       }
00800    }
00801 }
00802 
00803 void ast_cdr_setanswer(struct ast_cdr *cdr, struct timeval t)
00804 {
00805 
00806    for (; cdr; cdr = cdr->next) {
00807       if (ast_test_flag(cdr, AST_CDR_FLAG_ANSLOCKED))
00808          continue;
00809       if (ast_test_flag(cdr, AST_CDR_FLAG_DONT_TOUCH) && ast_test_flag(cdr, AST_CDR_FLAG_LOCKED))
00810          continue;
00811       check_post(cdr);
00812       cdr->answer = t;
00813    }
00814 }
00815 
00816 void ast_cdr_setdisposition(struct ast_cdr *cdr, long int disposition)
00817 {
00818 
00819    for (; cdr; cdr = cdr->next) {
00820       if (ast_test_flag(cdr, AST_CDR_FLAG_LOCKED))
00821          continue;
00822       check_post(cdr);
00823       cdr->disposition = disposition;
00824    }
00825 }
00826 
00827 /* set cid info for one record */
00828 static void set_one_cid(struct ast_cdr *cdr, struct ast_channel *c)
00829 {
00830    /* Grab source from ANI or normal Caller*ID */
00831    const char *num = S_OR(c->cid.cid_ani, c->cid.cid_num);
00832    if (!cdr)
00833       return;
00834    if (!ast_strlen_zero(c->cid.cid_name)) {
00835       if (!ast_strlen_zero(num)) /* both name and number */
00836          snprintf(cdr->clid, sizeof(cdr->clid), "\"%s\" <%s>", c->cid.cid_name, num);
00837       else           /* only name */
00838          ast_copy_string(cdr->clid, c->cid.cid_name, sizeof(cdr->clid));
00839    } else if (!ast_strlen_zero(num)) { /* only number */
00840       ast_copy_string(cdr->clid, num, sizeof(cdr->clid));
00841    } else {          /* nothing known */
00842       cdr->clid[0] = '\0';
00843    }
00844    ast_copy_string(cdr->src, S_OR(num, ""), sizeof(cdr->src));
00845    ast_cdr_setvar(cdr, "dnid", S_OR(c->cid.cid_dnid, ""), 0);
00846 
00847 }
00848 int ast_cdr_setcid(struct ast_cdr *cdr, struct ast_channel *c)
00849 {
00850    for (; cdr; cdr = cdr->next) {
00851       if (!ast_test_flag(cdr, AST_CDR_FLAG_LOCKED))
00852          set_one_cid(cdr, c);
00853    }
00854    return 0;
00855 }
00856 
00857 int ast_cdr_init(struct ast_cdr *cdr, struct ast_channel *c)
00858 {
00859    char *chan;
00860 
00861    for ( ; cdr ; cdr = cdr->next) {
00862       if (!ast_test_flag(cdr, AST_CDR_FLAG_LOCKED)) {
00863          chan = S_OR(cdr->channel, "<unknown>");
00864          ast_copy_string(cdr->channel, c->name, sizeof(cdr->channel));
00865          set_one_cid(cdr, c);
00866 
00867          cdr->disposition = (c->_state == AST_STATE_UP) ?  AST_CDR_ANSWERED : AST_CDR_NOANSWER;
00868          cdr->amaflags = c->amaflags ? c->amaflags :  ast_default_amaflags;
00869          ast_copy_string(cdr->accountcode, c->accountcode, sizeof(cdr->accountcode));
00870          /* Destination information */
00871          ast_copy_string(cdr->dst, S_OR(c->macroexten,c->exten), sizeof(cdr->dst));
00872          ast_copy_string(cdr->dcontext, S_OR(c->macrocontext,c->context), sizeof(cdr->dcontext));
00873          /* Unique call identifier */
00874          ast_copy_string(cdr->uniqueid, c->uniqueid, sizeof(cdr->uniqueid));
00875       }
00876    }
00877    return 0;
00878 }
00879 
00880 /* Three routines were "fixed" via 10668, and later shown that 
00881    users were depending on this behavior. ast_cdr_end,
00882    ast_cdr_setvar and ast_cdr_answer are the three routines.
00883    While most of the other routines would not touch 
00884    LOCKED cdr's, these three routines were designed to
00885    operate on locked CDR's as a matter of course.
00886    I now appreciate how this plays with the ForkCDR app,
00887    which forms these cdr chains in the first place. 
00888    cdr_end is pretty key: all cdrs created are closed
00889    together. They only vary by start time. Arithmetically,
00890    users can calculate the subintervals they wish to track. */
00891 
00892 void ast_cdr_end(struct ast_cdr *cdr)
00893 {
00894    for ( ; cdr ; cdr = cdr->next) {
00895       if (ast_test_flag(cdr, AST_CDR_FLAG_DONT_TOUCH) && ast_test_flag(cdr, AST_CDR_FLAG_LOCKED))
00896          continue;
00897       check_post(cdr);
00898       if (ast_tvzero(cdr->end))
00899          cdr->end = ast_tvnow();
00900       if (ast_tvzero(cdr->start)) {
00901          ast_log(LOG_WARNING, "CDR on channel '%s' has not started\n", S_OR(cdr->channel, "<unknown>"));
00902          cdr->disposition = AST_CDR_FAILED;
00903       } else
00904          cdr->duration = cdr->end.tv_sec - cdr->start.tv_sec;
00905       if (ast_tvzero(cdr->answer)) {
00906          if (cdr->disposition == AST_CDR_ANSWERED) {
00907             ast_log(LOG_WARNING, "CDR on channel '%s' has no answer time but is 'ANSWERED'\n", S_OR(cdr->channel, "<unknown>"));
00908             cdr->disposition = AST_CDR_FAILED;
00909          }
00910       } else
00911          cdr->billsec = cdr->end.tv_sec - cdr->answer.tv_sec;
00912    }
00913 }
00914 
00915 char *ast_cdr_disp2str(int disposition)
00916 {
00917    switch (disposition) {
00918    case AST_CDR_NULL:
00919       return "NO ANSWER"; /* by default, for backward compatibility */
00920    case AST_CDR_NOANSWER:
00921       return "NO ANSWER";
00922    case AST_CDR_FAILED:
00923       return "FAILED";     
00924    case AST_CDR_BUSY:
00925       return "BUSY";    
00926    case AST_CDR_ANSWERED:
00927       return "ANSWERED";
00928    }
00929    return "UNKNOWN";
00930 }
00931 
00932 /*! Converts AMA flag to printable string */
00933 char *ast_cdr_flags2str(int flag)
00934 {
00935    switch(flag) {
00936    case AST_CDR_OMIT:
00937       return "OMIT";
00938    case AST_CDR_BILLING:
00939       return "BILLING";
00940    case AST_CDR_DOCUMENTATION:
00941       return "DOCUMENTATION";
00942    }
00943    return "Unknown";
00944 }
00945 
00946 int ast_cdr_setaccount(struct ast_channel *chan, const char *account)
00947 {
00948    struct ast_cdr *cdr = chan->cdr;
00949 
00950    ast_string_field_set(chan, accountcode, account);
00951    for ( ; cdr ; cdr = cdr->next) {
00952       if (!ast_test_flag(cdr, AST_CDR_FLAG_LOCKED)) {
00953          ast_copy_string(cdr->accountcode, chan->accountcode, sizeof(cdr->accountcode));
00954       }
00955    }
00956    return 0;
00957 }
00958 
00959 int ast_cdr_setamaflags(struct ast_channel *chan, const char *flag)
00960 {
00961    struct ast_cdr *cdr;
00962    int newflag = ast_cdr_amaflags2int(flag);
00963    if (newflag) {
00964       for (cdr = chan->cdr; cdr; cdr = cdr->next) {
00965          if (!ast_test_flag(cdr, AST_CDR_FLAG_LOCKED)) {
00966             cdr->amaflags = newflag;
00967          }
00968       }
00969    }
00970 
00971    return 0;
00972 }
00973 
00974 int ast_cdr_setuserfield(struct ast_channel *chan, const char *userfield)
00975 {
00976    struct ast_cdr *cdr = chan->cdr;
00977 
00978    for ( ; cdr ; cdr = cdr->next) {
00979       if (!ast_test_flag(cdr, AST_CDR_FLAG_LOCKED)) 
00980          ast_copy_string(cdr->userfield, userfield, sizeof(cdr->userfield));
00981    }
00982 
00983    return 0;
00984 }
00985 
00986 int ast_cdr_appenduserfield(struct ast_channel *chan, const char *userfield)
00987 {
00988    struct ast_cdr *cdr = chan->cdr;
00989 
00990    for ( ; cdr ; cdr = cdr->next) {
00991       int len = strlen(cdr->userfield);
00992 
00993       if (!ast_test_flag(cdr, AST_CDR_FLAG_LOCKED))
00994          ast_copy_string(cdr->userfield + len, userfield, sizeof(cdr->userfield) - len);
00995    }
00996 
00997    return 0;
00998 }
00999 
01000 int ast_cdr_update(struct ast_channel *c)
01001 {
01002    struct ast_cdr *cdr = c->cdr;
01003 
01004    for ( ; cdr ; cdr = cdr->next) {
01005       if (!ast_test_flag(cdr, AST_CDR_FLAG_LOCKED)) {
01006          set_one_cid(cdr, c);
01007 
01008          /* Copy account code et-al */ 
01009          ast_copy_string(cdr->accountcode, c->accountcode, sizeof(cdr->accountcode));
01010          
01011          /* Destination information */ /* XXX privilege macro* ? */
01012          ast_copy_string(cdr->dst, S_OR(c->macroexten, c->exten), sizeof(cdr->dst));
01013          ast_copy_string(cdr->dcontext, S_OR(c->macrocontext, c->context), sizeof(cdr->dcontext));
01014       }
01015    }
01016 
01017    return 0;
01018 }
01019 
01020 int ast_cdr_amaflags2int(const char *flag)
01021 {
01022    if (!strcasecmp(flag, "default"))
01023       return 0;
01024    if (!strcasecmp(flag, "omit"))
01025       return AST_CDR_OMIT;
01026    if (!strcasecmp(flag, "billing"))
01027       return AST_CDR_BILLING;
01028    if (!strcasecmp(flag, "documentation"))
01029       return AST_CDR_DOCUMENTATION;
01030    return -1;
01031 }
01032 
01033 static void post_cdr(struct ast_cdr *cdr)
01034 {
01035    char *chan;
01036    struct ast_cdr_beitem *i;
01037 
01038    for ( ; cdr ; cdr = cdr->next) {
01039       if (!unanswered && !ast_test_flag(cdr, AST_CDR_FLAG_DONT_TOUCH) && cdr->disposition < AST_CDR_ANSWERED && (ast_strlen_zero(cdr->channel) || ast_strlen_zero(cdr->dstchannel))) {
01040          /* For people, who don't want to see unanswered single-channel events */
01041          ast_set_flag(cdr, AST_CDR_FLAG_POST_DISABLED);
01042          continue;
01043       }
01044 
01045       /* don't post CDRs that are for dialed channels unless those
01046        * channels were originated from asterisk (pbx_spool, manager,
01047        * cli) */
01048       if (ast_test_flag(cdr, AST_CDR_FLAG_DIALED) && !ast_test_flag(cdr, AST_CDR_FLAG_ORIGINATED)) {
01049          ast_set_flag(cdr, AST_CDR_FLAG_POST_DISABLED);
01050          continue;
01051       }
01052 
01053       chan = S_OR(cdr->channel, "<unknown>");
01054       check_post(cdr);
01055       if (option_verbose > 1 && ast_tvzero(cdr->end))
01056          ast_verbose(VERBOSE_PREFIX_2 "CDR on channel '%s' lacks end\n", chan);
01057       if (option_verbose > 1 && ast_tvzero(cdr->start))
01058          ast_verbose(VERBOSE_PREFIX_2 "CDR on channel '%s' lacks start\n", chan);
01059       ast_set_flag(cdr, AST_CDR_FLAG_POSTED);
01060       if (ast_test_flag(cdr, AST_CDR_FLAG_POST_DISABLED))
01061          continue;
01062       AST_LIST_LOCK(&be_list);
01063       AST_LIST_TRAVERSE(&be_list, i, list) {
01064          i->be(cdr);
01065       }
01066       AST_LIST_UNLOCK(&be_list);
01067    }
01068 }
01069 
01070 void ast_cdr_reset(struct ast_cdr *cdr, struct ast_flags *_flags)
01071 {
01072    struct ast_cdr *dup;
01073    struct ast_flags flags = { 0 };
01074 
01075    if (_flags)
01076       ast_copy_flags(&flags, _flags, AST_FLAGS_ALL);
01077 
01078    for ( ; cdr ; cdr = cdr->next) {
01079       /* Detach if post is requested */
01080       if (ast_test_flag(&flags, AST_CDR_FLAG_LOCKED) || !ast_test_flag(cdr, AST_CDR_FLAG_LOCKED)) {
01081          if (ast_test_flag(&flags, AST_CDR_FLAG_POSTED)) {
01082             ast_cdr_end(cdr);
01083             if ((dup = ast_cdr_dup(cdr))) {
01084                ast_cdr_detach(dup);
01085             }
01086             ast_set_flag(cdr, AST_CDR_FLAG_POSTED);
01087          }
01088 
01089          /* clear variables */
01090          if (!ast_test_flag(&flags, AST_CDR_FLAG_KEEP_VARS)) {
01091             ast_cdr_free_vars(cdr, 0);
01092          }
01093 
01094          /* Reset to initial state */
01095          ast_clear_flag(cdr, AST_FLAGS_ALL); 
01096          memset(&cdr->start, 0, sizeof(cdr->start));
01097          memset(&cdr->end, 0, sizeof(cdr->end));
01098          memset(&cdr->answer, 0, sizeof(cdr->answer));
01099          cdr->billsec = 0;
01100          cdr->duration = 0;
01101          ast_cdr_start(cdr);
01102          cdr->disposition = AST_CDR_NOANSWER;
01103       }
01104    }
01105 }
01106 
01107 void ast_cdr_specialized_reset(struct ast_cdr *cdr, struct ast_flags *_flags)
01108 {
01109    struct ast_flags flags = { 0 };
01110 
01111    if (_flags)
01112       ast_copy_flags(&flags, _flags, AST_FLAGS_ALL);
01113    
01114    /* Reset to initial state */
01115    if (ast_test_flag(cdr, AST_CDR_FLAG_POST_DISABLED)) { /* But do NOT lose the NoCDR() setting */
01116       ast_clear_flag(cdr, AST_FLAGS_ALL); 
01117       ast_set_flag(cdr, AST_CDR_FLAG_POST_DISABLED);
01118    } else {
01119       ast_clear_flag(cdr, AST_FLAGS_ALL); 
01120    }
01121    
01122    memset(&cdr->start, 0, sizeof(cdr->start));
01123    memset(&cdr->end, 0, sizeof(cdr->end));
01124    memset(&cdr->answer, 0, sizeof(cdr->answer));
01125    cdr->billsec = 0;
01126    cdr->duration = 0;
01127    ast_cdr_start(cdr);
01128    cdr->disposition = AST_CDR_NULL;
01129 }
01130 
01131 struct ast_cdr *ast_cdr_append(struct ast_cdr *cdr, struct ast_cdr *newcdr) 
01132 {
01133    struct ast_cdr *ret;
01134 
01135    if (cdr) {
01136       ret = cdr;
01137 
01138       while (cdr->next)
01139          cdr = cdr->next;
01140       cdr->next = newcdr;
01141    } else {
01142       ret = newcdr;
01143    }
01144 
01145    return ret;
01146 }
01147 
01148 /*! \note Don't call without cdr_batch_lock */
01149 static void reset_batch(void)
01150 {
01151    batch->size = 0;
01152    batch->head = NULL;
01153    batch->tail = NULL;
01154 }
01155 
01156 /*! \note Don't call without cdr_batch_lock */
01157 static int init_batch(void)
01158 {
01159    /* This is the single meta-batch used to keep track of all CDRs during the entire life of the program */
01160    if (!(batch = ast_malloc(sizeof(*batch))))
01161       return -1;
01162 
01163    reset_batch();
01164 
01165    return 0;
01166 }
01167 
01168 static void *do_batch_backend_process(void *data)
01169 {
01170    struct ast_cdr_batch_item *processeditem;
01171    struct ast_cdr_batch_item *batchitem = data;
01172 
01173    /* Push each CDR into storage mechanism(s) and free all the memory */
01174    while (batchitem) {
01175       post_cdr(batchitem->cdr);
01176       ast_cdr_free(batchitem->cdr);
01177       processeditem = batchitem;
01178       batchitem = batchitem->next;
01179       free(processeditem);
01180    }
01181 
01182    return NULL;
01183 }
01184 
01185 void ast_cdr_submit_batch(int shutdown)
01186 {
01187    struct ast_cdr_batch_item *oldbatchitems = NULL;
01188    pthread_attr_t attr;
01189    pthread_t batch_post_thread = AST_PTHREADT_NULL;
01190 
01191    /* if there's no batch, or no CDRs in the batch, then there's nothing to do */
01192    if (!batch || !batch->head)
01193       return;
01194 
01195    /* move the old CDRs aside, and prepare a new CDR batch */
01196    ast_mutex_lock(&cdr_batch_lock);
01197    oldbatchitems = batch->head;
01198    reset_batch();
01199    ast_mutex_unlock(&cdr_batch_lock);
01200 
01201    /* if configured, spawn a new thread to post these CDRs,
01202       also try to save as much as possible if we are shutting down safely */
01203    if (batchscheduleronly || shutdown) {
01204       if (option_debug)
01205          ast_log(LOG_DEBUG, "CDR single-threaded batch processing begins now\n");
01206       do_batch_backend_process(oldbatchitems);
01207    } else {
01208       pthread_attr_init(&attr);
01209       pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED);
01210       if (ast_pthread_create_background(&batch_post_thread, &attr, do_batch_backend_process, oldbatchitems)) {
01211          ast_log(LOG_WARNING, "CDR processing thread could not detach, now trying in this thread\n");
01212          do_batch_backend_process(oldbatchitems);
01213       } else {
01214          if (option_debug)
01215             ast_log(LOG_DEBUG, "CDR multi-threaded batch processing begins now\n");
01216       }
01217       pthread_attr_destroy(&attr);
01218    }
01219 }
01220 
01221 static int submit_scheduled_batch(const void *data)
01222 {
01223    ast_cdr_submit_batch(0);
01224    /* manually reschedule from this point in time */
01225    cdr_sched = ast_sched_add(sched, batchtime * 1000, submit_scheduled_batch, NULL);
01226    /* returning zero so the scheduler does not automatically reschedule */
01227    return 0;
01228 }
01229 
01230 static void submit_unscheduled_batch(void)
01231 {
01232    /* this is okay since we are not being called from within the scheduler */
01233    AST_SCHED_DEL(sched, cdr_sched);
01234    /* schedule the submission to occur ASAP (1 ms) */
01235    cdr_sched = ast_sched_add(sched, 1, submit_scheduled_batch, NULL);
01236    /* signal the do_cdr thread to wakeup early and do some work (that lazy thread ;) */
01237    ast_mutex_lock(&cdr_pending_lock);
01238    ast_cond_signal(&cdr_pending_cond);
01239    ast_mutex_unlock(&cdr_pending_lock);
01240 }
01241 
01242 void ast_cdr_detach(struct ast_cdr *cdr)
01243 {
01244    struct ast_cdr_batch_item *newtail;
01245    int curr;
01246 
01247    if (!cdr)
01248       return;
01249 
01250    /* maybe they disabled CDR stuff completely, so just drop it */
01251    if (!enabled) {
01252       if (option_debug)
01253          ast_log(LOG_DEBUG, "Dropping CDR !\n");
01254       ast_set_flag(cdr, AST_CDR_FLAG_POST_DISABLED);
01255       ast_cdr_free(cdr);
01256       return;
01257    }
01258 
01259    /* post stuff immediately if we are not in batch mode, this is legacy behaviour */
01260    if (!batchmode) {
01261       post_cdr(cdr);
01262       ast_cdr_free(cdr);
01263       return;
01264    }
01265 
01266    /* otherwise, each CDR gets put into a batch list (at the end) */
01267    if (option_debug)
01268       ast_log(LOG_DEBUG, "CDR detaching from this thread\n");
01269 
01270    /* we'll need a new tail for every CDR */
01271    if (!(newtail = ast_calloc(1, sizeof(*newtail)))) {
01272       post_cdr(cdr);
01273       ast_cdr_free(cdr);
01274       return;
01275    }
01276 
01277    /* don't traverse a whole list (just keep track of the tail) */
01278    ast_mutex_lock(&cdr_batch_lock);
01279    if (!batch)
01280       init_batch();
01281    if (!batch->head) {
01282       /* new batch is empty, so point the head at the new tail */
01283       batch->head = newtail;
01284    } else {
01285       /* already got a batch with something in it, so just append a new tail */
01286       batch->tail->next = newtail;
01287    }
01288    newtail->cdr = cdr;
01289    batch->tail = newtail;
01290    curr = batch->size++;
01291    ast_mutex_unlock(&cdr_batch_lock);
01292 
01293    /* if we have enough stuff to post, then do it */
01294    if (curr >= (batchsize - 1))
01295       submit_unscheduled_batch();
01296 }
01297 
01298 static void *do_cdr(void *data)
01299 {
01300    struct timespec timeout;
01301    int schedms;
01302    int numevents = 0;
01303 
01304    for(;;) {
01305       struct timeval now;
01306       schedms = ast_sched_wait(sched);
01307       /* this shouldn't happen, but provide a 1 second default just in case */
01308       if (schedms <= 0)
01309          schedms = 1000;
01310       now = ast_tvadd(ast_tvnow(), ast_samp2tv(schedms, 1000));
01311       timeout.tv_sec = now.tv_sec;
01312       timeout.tv_nsec = now.tv_usec * 1000;
01313       /* prevent stuff from clobbering cdr_pending_cond, then wait on signals sent to it until the timeout expires */
01314       ast_mutex_lock(&cdr_pending_lock);
01315       ast_cond_timedwait(&cdr_pending_cond, &cdr_pending_lock, &timeout);
01316       numevents = ast_sched_runq(sched);
01317       ast_mutex_unlock(&cdr_pending_lock);
01318       if (option_debug > 1)
01319          ast_log(LOG_DEBUG, "Processed %d scheduled CDR batches from the run queue\n", numevents);
01320    }
01321 
01322    return NULL;
01323 }
01324 
01325 static int handle_cli_status(int fd, int argc, char *argv[])
01326 {
01327    struct ast_cdr_beitem *beitem=NULL;
01328    int cnt=0;
01329    long nextbatchtime=0;
01330 
01331    if (argc > 2)
01332       return RESULT_SHOWUSAGE;
01333 
01334    ast_cli(fd, "CDR logging: %s\n", enabled ? "enabled" : "disabled");
01335    ast_cli(fd, "CDR mode: %s\n", batchmode ? "batch" : "simple");
01336    if (enabled) {
01337       ast_cli(fd, "CDR output unanswered calls: %s\n", unanswered ? "yes" : "no");
01338       if (batchmode) {
01339          if (batch)
01340             cnt = batch->size;
01341          if (cdr_sched > -1)
01342             nextbatchtime = ast_sched_when(sched, cdr_sched);
01343          ast_cli(fd, "CDR safe shut down: %s\n", batchsafeshutdown ? "enabled" : "disabled");
01344          ast_cli(fd, "CDR batch threading model: %s\n", batchscheduleronly ? "scheduler only" : "scheduler plus separate threads");
01345          ast_cli(fd, "CDR current batch size: %d record%s\n", cnt, (cnt != 1) ? "s" : "");
01346          ast_cli(fd, "CDR maximum batch size: %d record%s\n", batchsize, (batchsize != 1) ? "s" : "");
01347          ast_cli(fd, "CDR maximum batch time: %d second%s\n", batchtime, (batchtime != 1) ? "s" : "");
01348          ast_cli(fd, "CDR next scheduled batch processing time: %ld second%s\n", nextbatchtime, (nextbatchtime != 1) ? "s" : "");
01349       }
01350       AST_LIST_LOCK(&be_list);
01351       AST_LIST_TRAVERSE(&be_list, beitem, list) {
01352          ast_cli(fd, "CDR registered backend: %s\n", beitem->name);
01353       }
01354       AST_LIST_UNLOCK(&be_list);
01355    }
01356 
01357    return 0;
01358 }
01359 
01360 static int handle_cli_submit(int fd, int argc, char *argv[])
01361 {
01362    if (argc > 2)
01363       return RESULT_SHOWUSAGE;
01364 
01365    submit_unscheduled_batch();
01366    ast_cli(fd, "Submitted CDRs to backend engines for processing.  This may take a while.\n");
01367 
01368    return 0;
01369 }
01370 
01371 static struct ast_cli_entry cli_submit = {
01372    { "cdr", "submit", NULL },
01373    handle_cli_submit, "Posts all pending batched CDR data",
01374    "Usage: cdr submit\n"
01375    "       Posts all pending batched CDR data to the configured CDR backend engine modules.\n"
01376 };
01377 
01378 static struct ast_cli_entry cli_status = {
01379    { "cdr", "status", NULL },
01380    handle_cli_status, "Display the CDR status",
01381    "Usage: cdr status\n"
01382    "  Displays the Call Detail Record engine system status.\n"
01383 };
01384 
01385 static int do_reload(void)
01386 {
01387    struct ast_config *config;
01388    const char *enabled_value;
01389    const char *unanswered_value;
01390    const char *batched_value;
01391    const char *scheduleronly_value;
01392    const char *batchsafeshutdown_value;
01393    const char *size_value;
01394    const char *time_value;
01395    const char *end_before_h_value;
01396    int cfg_size;
01397    int cfg_time;
01398    int was_enabled;
01399    int was_batchmode;
01400    int res=0;
01401 
01402    ast_mutex_lock(&cdr_batch_lock);
01403 
01404    batchsize = BATCH_SIZE_DEFAULT;
01405    batchtime = BATCH_TIME_DEFAULT;
01406    batchscheduleronly = BATCH_SCHEDULER_ONLY_DEFAULT;
01407    batchsafeshutdown = BATCH_SAFE_SHUTDOWN_DEFAULT;
01408    was_enabled = enabled;
01409    was_batchmode = batchmode;
01410    enabled = 1;
01411    batchmode = 0;
01412 
01413    /* don't run the next scheduled CDR posting while reloading */
01414    AST_SCHED_DEL(sched, cdr_sched);
01415 
01416    if ((config = ast_config_load("cdr.conf"))) {
01417       if ((enabled_value = ast_variable_retrieve(config, "general", "enable"))) {
01418          enabled = ast_true(enabled_value);
01419       }
01420       if ((unanswered_value = ast_variable_retrieve(config, "general", "unanswered"))) {
01421          unanswered = ast_true(unanswered_value);
01422       }
01423       if ((batched_value = ast_variable_retrieve(config, "general", "batch"))) {
01424          batchmode = ast_true(batched_value);
01425       }
01426       if ((scheduleronly_value = ast_variable_retrieve(config, "general", "scheduleronly"))) {
01427          batchscheduleronly = ast_true(scheduleronly_value);
01428       }
01429       if ((batchsafeshutdown_value = ast_variable_retrieve(config, "general", "safeshutdown"))) {
01430          batchsafeshutdown = ast_true(batchsafeshutdown_value);
01431       }
01432       if ((size_value = ast_variable_retrieve(config, "general", "size"))) {
01433          if (sscanf(size_value, "%30d", &cfg_size) < 1)
01434             ast_log(LOG_WARNING, "Unable to convert '%s' to a numeric value.\n", size_value);
01435          else if (cfg_size < 0)
01436             ast_log(LOG_WARNING, "Invalid maximum batch size '%d' specified, using default\n", cfg_size);
01437          else
01438             batchsize = cfg_size;
01439       }
01440       if ((time_value = ast_variable_retrieve(config, "general", "time"))) {
01441          if (sscanf(time_value, "%30d", &cfg_time) < 1)
01442             ast_log(LOG_WARNING, "Unable to convert '%s' to a numeric value.\n", time_value);
01443          else if (cfg_time < 0)
01444             ast_log(LOG_WARNING, "Invalid maximum batch time '%d' specified, using default\n", cfg_time);
01445          else
01446             batchtime = cfg_time;
01447       }
01448       if ((end_before_h_value = ast_variable_retrieve(config, "general", "endbeforehexten")))
01449          ast_set2_flag(&ast_options, ast_true(end_before_h_value), AST_OPT_FLAG_END_CDR_BEFORE_H_EXTEN);
01450    }
01451 
01452    if (enabled && !batchmode) {
01453       ast_log(LOG_NOTICE, "CDR simple logging enabled.\n");
01454    } else if (enabled && batchmode) {
01455       cdr_sched = ast_sched_add(sched, batchtime * 1000, submit_scheduled_batch, NULL);
01456       ast_log(LOG_NOTICE, "CDR batch mode logging enabled, first of either size %d or time %d seconds.\n", batchsize, batchtime);
01457    } else {
01458       ast_log(LOG_NOTICE, "CDR logging disabled, data will be lost.\n");
01459    }
01460 
01461    /* if this reload enabled the CDR batch mode, create the background thread
01462       if it does not exist */
01463    if (enabled && batchmode && (!was_enabled || !was_batchmode) && (cdr_thread == AST_PTHREADT_NULL)) {
01464       ast_cond_init(&cdr_pending_cond, NULL);
01465       if (ast_pthread_create_background(&cdr_thread, NULL, do_cdr, NULL) < 0) {
01466          ast_log(LOG_ERROR, "Unable to start CDR thread.\n");
01467          AST_SCHED_DEL(sched, cdr_sched);
01468       } else {
01469          ast_cli_register(&cli_submit);
01470          ast_register_atexit(ast_cdr_engine_term);
01471          res = 0;
01472       }
01473    /* if this reload disabled the CDR and/or batch mode and there is a background thread,
01474       kill it */
01475    } else if (((!enabled && was_enabled) || (!batchmode && was_batchmode)) && (cdr_thread != AST_PTHREADT_NULL)) {
01476       /* wake up the thread so it will exit */
01477       pthread_cancel(cdr_thread);
01478       pthread_kill(cdr_thread, SIGURG);
01479       pthread_join(cdr_thread, NULL);
01480       cdr_thread = AST_PTHREADT_NULL;
01481       ast_cond_destroy(&cdr_pending_cond);
01482       ast_cli_unregister(&cli_submit);
01483       ast_unregister_atexit(ast_cdr_engine_term);
01484       res = 0;
01485       /* if leaving batch mode, then post the CDRs in the batch,
01486          and don't reschedule, since we are stopping CDR logging */
01487       if (!batchmode && was_batchmode) {
01488          ast_cdr_engine_term();
01489       }
01490    } else {
01491       res = 0;
01492    }
01493 
01494    ast_mutex_unlock(&cdr_batch_lock);
01495    ast_config_destroy(config);
01496 
01497    return res;
01498 }
01499 
01500 int ast_cdr_engine_init(void)
01501 {
01502    int res;
01503 
01504    sched = sched_context_create();
01505    if (!sched) {
01506       ast_log(LOG_ERROR, "Unable to create schedule context.\n");
01507       return -1;
01508    }
01509 
01510    ast_cli_register(&cli_status);
01511 
01512    res = do_reload();
01513    if (res) {
01514       ast_mutex_lock(&cdr_batch_lock);
01515       res = init_batch();
01516       ast_mutex_unlock(&cdr_batch_lock);
01517    }
01518 
01519    return res;
01520 }
01521 
01522 /* \note This actually gets called a couple of times at shutdown.  Once, before we start
01523    hanging up channels, and then again, after the channel hangup timeout expires */
01524 void ast_cdr_engine_term(void)
01525 {
01526    ast_cdr_submit_batch(batchsafeshutdown);
01527 }
01528 
01529 int ast_cdr_engine_reload(void)
01530 {
01531    return do_reload();
01532 }
01533 

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