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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 /*** MODULEINFO
00035    <support_level>core</support_level>
00036  ***/
00037 
00038 #include "asterisk.h"
00039 
00040 ASTERISK_FILE_VERSION(__FILE__, "$Revision: 383839 $")
00041 
00042 #include <signal.h>
00043 
00044 #include "asterisk/lock.h"
00045 #include "asterisk/channel.h"
00046 #include "asterisk/cdr.h"
00047 #include "asterisk/callerid.h"
00048 #include "asterisk/manager.h"
00049 #include "asterisk/causes.h"
00050 #include "asterisk/linkedlists.h"
00051 #include "asterisk/utils.h"
00052 #include "asterisk/sched.h"
00053 #include "asterisk/config.h"
00054 #include "asterisk/cli.h"
00055 #include "asterisk/stringfields.h"
00056 #include "asterisk/data.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_RWLIST_ENTRY(ast_cdr_beitem) list;
00067 };
00068 
00069 static AST_RWLIST_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 
00083 static int cdr_sequence =  0;
00084 
00085 static int cdr_seq_inc(struct ast_cdr *cdr);
00086 
00087 static struct sched_context *sched;
00088 static int cdr_sched = -1;
00089 static pthread_t cdr_thread = AST_PTHREADT_NULL;
00090 
00091 static int enabled;
00092 static const int ENABLED_DEFAULT = 1;
00093 
00094 static int batchmode;
00095 static const int BATCHMODE_DEFAULT = 0;
00096 
00097 static int unanswered;
00098 static const int UNANSWERED_DEFAULT = 0;
00099 
00100 static int batchsize;
00101 static const int BATCH_SIZE_DEFAULT = 100;
00102 
00103 static int batchtime;
00104 static const int BATCH_TIME_DEFAULT = 300;
00105 
00106 static int batchscheduleronly;
00107 static const int BATCH_SCHEDULER_ONLY_DEFAULT = 0;
00108 
00109 static int batchsafeshutdown;
00110 static const int BATCH_SAFE_SHUTDOWN_DEFAULT = 1;
00111 
00112 AST_MUTEX_DEFINE_STATIC(cdr_sched_lock);
00113 
00114 AST_MUTEX_DEFINE_STATIC(cdr_batch_lock);
00115 
00116 /* these are used to wake up the CDR thread when there's work to do */
00117 AST_MUTEX_DEFINE_STATIC(cdr_pending_lock);
00118 static ast_cond_t cdr_pending_cond;
00119 
00120 int check_cdr_enabled(void)
00121 {
00122    return enabled;
00123 }
00124 
00125 /*!
00126  * \brief Register a CDR driver. Each registered CDR driver generates a CDR
00127  * \retval 0 on success.
00128  * \retval -1 on error
00129  */
00130 int ast_cdr_register(const char *name, const char *desc, ast_cdrbe be)
00131 {
00132    struct ast_cdr_beitem *i = NULL;
00133 
00134    if (!name)
00135       return -1;
00136 
00137    if (!be) {
00138       ast_log(LOG_WARNING, "CDR engine '%s' lacks backend\n", name);
00139       return -1;
00140    }
00141 
00142    AST_RWLIST_WRLOCK(&be_list);
00143    AST_RWLIST_TRAVERSE(&be_list, i, list) {
00144       if (!strcasecmp(name, i->name)) {
00145          ast_log(LOG_WARNING, "Already have a CDR backend called '%s'\n", name);
00146          AST_RWLIST_UNLOCK(&be_list);
00147          return -1;
00148       }
00149    }
00150 
00151    if (!(i = ast_calloc(1, sizeof(*i))))
00152       return -1;
00153 
00154    i->be = be;
00155    ast_copy_string(i->name, name, sizeof(i->name));
00156    ast_copy_string(i->desc, desc, sizeof(i->desc));
00157 
00158    AST_RWLIST_INSERT_HEAD(&be_list, i, list);
00159    AST_RWLIST_UNLOCK(&be_list);
00160 
00161    return 0;
00162 }
00163 
00164 /*! unregister a CDR driver */
00165 void ast_cdr_unregister(const char *name)
00166 {
00167    struct ast_cdr_beitem *i = NULL;
00168 
00169    AST_RWLIST_WRLOCK(&be_list);
00170    AST_RWLIST_TRAVERSE_SAFE_BEGIN(&be_list, i, list) {
00171       if (!strcasecmp(name, i->name)) {
00172          AST_RWLIST_REMOVE_CURRENT(list);
00173          break;
00174       }
00175    }
00176    AST_RWLIST_TRAVERSE_SAFE_END;
00177    AST_RWLIST_UNLOCK(&be_list);
00178 
00179    if (i) {
00180       ast_verb(2, "Unregistered '%s' CDR backend\n", name);
00181       ast_free(i);
00182    }
00183 }
00184 
00185 int ast_cdr_isset_unanswered(void)
00186 {
00187    return unanswered;
00188 }
00189 
00190 struct ast_cdr *ast_cdr_dup_unique(struct ast_cdr *cdr)
00191 {
00192    struct ast_cdr *newcdr = ast_cdr_dup(cdr);
00193    if (!newcdr)
00194       return NULL;
00195 
00196    cdr_seq_inc(newcdr);
00197    return newcdr;
00198 }
00199 
00200 struct ast_cdr *ast_cdr_dup_unique_swap(struct ast_cdr *cdr)
00201 {
00202    struct ast_cdr *newcdr = ast_cdr_dup(cdr);
00203    if (!newcdr)
00204       return NULL;
00205 
00206    cdr_seq_inc(cdr);
00207    return newcdr;
00208 }
00209 
00210 /*! Duplicate a CDR record
00211    \returns Pointer to new CDR record
00212 */
00213 struct ast_cdr *ast_cdr_dup(struct ast_cdr *cdr)
00214 {
00215    struct ast_cdr *newcdr;
00216 
00217    if (!cdr) /* don't die if we get a null cdr pointer */
00218       return NULL;
00219    newcdr = ast_cdr_alloc();
00220    if (!newcdr)
00221       return NULL;
00222 
00223    memcpy(newcdr, cdr, sizeof(*newcdr));
00224    /* The varshead is unusable, volatile even, after the memcpy so we take care of that here */
00225    memset(&newcdr->varshead, 0, sizeof(newcdr->varshead));
00226    ast_cdr_copy_vars(newcdr, cdr);
00227    newcdr->next = NULL;
00228 
00229    return newcdr;
00230 }
00231 
00232 static const char *ast_cdr_getvar_internal(struct ast_cdr *cdr, const char *name, int recur)
00233 {
00234    if (ast_strlen_zero(name))
00235       return NULL;
00236 
00237    for (; cdr; cdr = recur ? cdr->next : NULL) {
00238       struct ast_var_t *variables;
00239       struct varshead *headp = &cdr->varshead;
00240       AST_LIST_TRAVERSE(headp, variables, entries) {
00241          if (!strcasecmp(name, ast_var_name(variables)))
00242             return ast_var_value(variables);
00243       }
00244    }
00245 
00246    return NULL;
00247 }
00248 
00249 static void cdr_get_tv(struct timeval when, const char *fmt, char *buf, int bufsize)
00250 {
00251    if (fmt == NULL) {   /* raw mode */
00252       snprintf(buf, bufsize, "%ld.%06ld", (long)when.tv_sec, (long)when.tv_usec);
00253    } else {
00254       if (when.tv_sec) {
00255          struct ast_tm tm;
00256 
00257          ast_localtime(&when, &tm, NULL);
00258          ast_strftime(buf, bufsize, fmt, &tm);
00259       }
00260    }
00261 }
00262 
00263 /*! CDR channel variable retrieval */
00264 void ast_cdr_getvar(struct ast_cdr *cdr, const char *name, char **ret, char *workspace, int workspacelen, int recur, int raw)
00265 {
00266    const char *fmt = "%Y-%m-%d %T";
00267    const char *varbuf;
00268 
00269    if (!cdr)  /* don't die if the cdr is null */
00270       return;
00271 
00272    *ret = NULL;
00273    /* special vars (the ones from the struct ast_cdr when requested by name)
00274       I'd almost say we should convert all the stringed vals to vars */
00275 
00276    if (!strcasecmp(name, "clid"))
00277       ast_copy_string(workspace, cdr->clid, workspacelen);
00278    else if (!strcasecmp(name, "src"))
00279       ast_copy_string(workspace, cdr->src, workspacelen);
00280    else if (!strcasecmp(name, "dst"))
00281       ast_copy_string(workspace, cdr->dst, workspacelen);
00282    else if (!strcasecmp(name, "dcontext"))
00283       ast_copy_string(workspace, cdr->dcontext, workspacelen);
00284    else if (!strcasecmp(name, "channel"))
00285       ast_copy_string(workspace, cdr->channel, workspacelen);
00286    else if (!strcasecmp(name, "dstchannel"))
00287       ast_copy_string(workspace, cdr->dstchannel, workspacelen);
00288    else if (!strcasecmp(name, "lastapp"))
00289       ast_copy_string(workspace, cdr->lastapp, workspacelen);
00290    else if (!strcasecmp(name, "lastdata"))
00291       ast_copy_string(workspace, cdr->lastdata, workspacelen);
00292    else if (!strcasecmp(name, "start"))
00293       cdr_get_tv(cdr->start, raw ? NULL : fmt, workspace, workspacelen);
00294    else if (!strcasecmp(name, "answer"))
00295       cdr_get_tv(cdr->answer, raw ? NULL : fmt, workspace, workspacelen);
00296    else if (!strcasecmp(name, "end"))
00297       cdr_get_tv(cdr->end, raw ? NULL : fmt, workspace, workspacelen);
00298    else if (!strcasecmp(name, "duration")) {
00299       snprintf(workspace, workspacelen, "%ld", cdr->end.tv_sec != 0 ? cdr->duration : (long)ast_tvdiff_ms(ast_tvnow(), cdr->start) / 1000);
00300    } else if (!strcasecmp(name, "billsec")) {
00301       snprintf(workspace, workspacelen, "%ld", (cdr->billsec || !ast_tvzero(cdr->end) || ast_tvzero(cdr->answer)) ? cdr->billsec : (long)ast_tvdiff_ms(ast_tvnow(), cdr->answer) / 1000); 
00302    } else if (!strcasecmp(name, "disposition")) {
00303       if (raw) {
00304          snprintf(workspace, workspacelen, "%ld", cdr->disposition);
00305       } else {
00306          ast_copy_string(workspace, ast_cdr_disp2str(cdr->disposition), workspacelen);
00307       }
00308    } else if (!strcasecmp(name, "amaflags")) {
00309       if (raw) {
00310          snprintf(workspace, workspacelen, "%ld", cdr->amaflags);
00311       } else {
00312          ast_copy_string(workspace, ast_cdr_flags2str(cdr->amaflags), workspacelen);
00313       }
00314    } else if (!strcasecmp(name, "accountcode"))
00315       ast_copy_string(workspace, cdr->accountcode, workspacelen);
00316    else if (!strcasecmp(name, "peeraccount"))
00317       ast_copy_string(workspace, cdr->peeraccount, workspacelen);
00318    else if (!strcasecmp(name, "uniqueid"))
00319       ast_copy_string(workspace, cdr->uniqueid, workspacelen);
00320    else if (!strcasecmp(name, "linkedid"))
00321       ast_copy_string(workspace, cdr->linkedid, workspacelen);
00322    else if (!strcasecmp(name, "userfield"))
00323       ast_copy_string(workspace, cdr->userfield, workspacelen);
00324    else if (!strcasecmp(name, "sequence"))
00325       snprintf(workspace, workspacelen, "%d", cdr->sequence);
00326    else if ((varbuf = ast_cdr_getvar_internal(cdr, name, recur)))
00327       ast_copy_string(workspace, varbuf, workspacelen);
00328    else
00329       workspace[0] = '\0';
00330 
00331    if (!ast_strlen_zero(workspace))
00332       *ret = workspace;
00333 }
00334 
00335 /* readonly cdr variables */
00336 static const char * const cdr_readonly_vars[] = { "clid", "src", "dst", "dcontext", "channel", "dstchannel",
00337                     "lastapp", "lastdata", "start", "answer", "end", "duration",
00338                     "billsec", "disposition", "amaflags", "accountcode", "uniqueid", "linkedid",
00339                     "userfield", "sequence", NULL };
00340 /*! Set a CDR channel variable
00341    \note You can't set the CDR variables that belong to the actual CDR record, like "billsec".
00342 */
00343 int ast_cdr_setvar(struct ast_cdr *cdr, const char *name, const char *value, int recur)
00344 {
00345    struct ast_var_t *newvariable;
00346    struct varshead *headp;
00347    int x;
00348 
00349    for (x = 0; cdr_readonly_vars[x]; x++) {
00350       if (!strcasecmp(name, cdr_readonly_vars[x])) {
00351          ast_log(LOG_ERROR, "Attempt to set the '%s' read-only variable!.\n", name);
00352          return -1;
00353       }
00354    }
00355 
00356    if (!cdr) {
00357       ast_log(LOG_ERROR, "Attempt to set a variable on a nonexistent CDR record.\n");
00358       return -1;
00359    }
00360 
00361    for (; cdr; cdr = recur ? cdr->next : NULL) {
00362       if (ast_test_flag(cdr, AST_CDR_FLAG_DONT_TOUCH) && ast_test_flag(cdr, AST_CDR_FLAG_LOCKED))
00363          continue;
00364       headp = &cdr->varshead;
00365       AST_LIST_TRAVERSE_SAFE_BEGIN(headp, newvariable, entries) {
00366          if (!strcasecmp(ast_var_name(newvariable), name)) {
00367             /* there is already such a variable, delete it */
00368             AST_LIST_REMOVE_CURRENT(entries);
00369             ast_var_delete(newvariable);
00370             break;
00371          }
00372       }
00373       AST_LIST_TRAVERSE_SAFE_END;
00374 
00375       if (value) {
00376          newvariable = ast_var_assign(name, value);
00377          AST_LIST_INSERT_HEAD(headp, newvariable, entries);
00378       }
00379    }
00380 
00381    return 0;
00382 }
00383 
00384 int ast_cdr_copy_vars(struct ast_cdr *to_cdr, struct ast_cdr *from_cdr)
00385 {
00386    struct ast_var_t *variables, *newvariable = NULL;
00387    struct varshead *headpa, *headpb;
00388    const char *var, *val;
00389    int x = 0;
00390 
00391    if (!to_cdr || !from_cdr) /* don't die if one of the pointers is null */
00392       return 0;
00393 
00394    headpa = &from_cdr->varshead;
00395    headpb = &to_cdr->varshead;
00396 
00397    AST_LIST_TRAVERSE(headpa,variables,entries) {
00398       if (variables &&
00399           (var = ast_var_name(variables)) && (val = ast_var_value(variables)) &&
00400           !ast_strlen_zero(var) && !ast_strlen_zero(val)) {
00401          newvariable = ast_var_assign(var, val);
00402          AST_LIST_INSERT_HEAD(headpb, newvariable, entries);
00403          x++;
00404       }
00405    }
00406 
00407    return x;
00408 }
00409 
00410 int ast_cdr_serialize_variables(struct ast_cdr *cdr, struct ast_str **buf, char delim, char sep, int recur)
00411 {
00412    struct ast_var_t *variables;
00413    const char *var;
00414    char *tmp;
00415    char workspace[256];
00416    int total = 0, x = 0, i;
00417 
00418    ast_str_reset(*buf);
00419 
00420    for (; cdr; cdr = recur ? cdr->next : NULL) {
00421       if (++x > 1)
00422          ast_str_append(buf, 0, "\n");
00423 
00424       AST_LIST_TRAVERSE(&cdr->varshead, variables, entries) {
00425          if (!(var = ast_var_name(variables))) {
00426             continue;
00427          }
00428 
00429          if (ast_str_append(buf, 0, "level %d: %s%c%s%c", x, var, delim, S_OR(ast_var_value(variables), ""), sep) < 0) {
00430             ast_log(LOG_ERROR, "Data Buffer Size Exceeded!\n");
00431             break;
00432          }
00433 
00434          total++;
00435       }
00436 
00437       for (i = 0; cdr_readonly_vars[i]; i++) {
00438          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 */
00439          ast_cdr_getvar(cdr, cdr_readonly_vars[i], &tmp, workspace, sizeof(workspace), 0, 0);
00440          if (!tmp)
00441             continue;
00442 
00443          if (ast_str_append(buf, 0, "level %d: %s%c%s%c", x, cdr_readonly_vars[i], delim, tmp, sep) < 0) {
00444             ast_log(LOG_ERROR, "Data Buffer Size Exceeded!\n");
00445             break;
00446          } else
00447             total++;
00448       }
00449    }
00450 
00451    return total;
00452 }
00453 
00454 
00455 void ast_cdr_free_vars(struct ast_cdr *cdr, int recur)
00456 {
00457 
00458    /* clear variables */
00459    for (; cdr; cdr = recur ? cdr->next : NULL) {
00460       struct ast_var_t *vardata;
00461       struct varshead *headp = &cdr->varshead;
00462       while ((vardata = AST_LIST_REMOVE_HEAD(headp, entries)))
00463          ast_var_delete(vardata);
00464    }
00465 }
00466 
00467 /*! \brief  print a warning if cdr already posted */
00468 static void check_post(struct ast_cdr *cdr)
00469 {
00470    if (!cdr)
00471       return;
00472    if (ast_test_flag(cdr, AST_CDR_FLAG_POSTED))
00473       ast_log(LOG_NOTICE, "CDR on channel '%s' already posted\n", S_OR(cdr->channel, "<unknown>"));
00474 }
00475 
00476 void ast_cdr_free(struct ast_cdr *cdr)
00477 {
00478 
00479    while (cdr) {
00480       struct ast_cdr *next = cdr->next;
00481 
00482       ast_cdr_free_vars(cdr, 0);
00483       ast_free(cdr);
00484       cdr = next;
00485    }
00486 }
00487 
00488 /*! \brief the same as a cdr_free call, only with no checks; just get rid of it */
00489 void ast_cdr_discard(struct ast_cdr *cdr)
00490 {
00491    while (cdr) {
00492       struct ast_cdr *next = cdr->next;
00493 
00494       ast_cdr_free_vars(cdr, 0);
00495       ast_free(cdr);
00496       cdr = next;
00497    }
00498 }
00499 
00500 struct ast_cdr *ast_cdr_alloc(void)
00501 {
00502    struct ast_cdr *x;
00503    x = ast_calloc(1, sizeof(*x));
00504    if (!x)
00505       ast_log(LOG_ERROR,"Allocation Failure for a CDR!\n");
00506    return x;
00507 }
00508 
00509 static void cdr_merge_vars(struct ast_cdr *to, struct ast_cdr *from)
00510 {
00511    struct ast_var_t *variablesfrom,*variablesto;
00512    struct varshead *headpfrom = &to->varshead;
00513    struct varshead *headpto = &from->varshead;
00514    AST_LIST_TRAVERSE_SAFE_BEGIN(headpfrom, variablesfrom, entries) {
00515       /* for every var in from, stick it in to */
00516       const char *fromvarname, *fromvarval;
00517       const char *tovarname = NULL, *tovarval = NULL;
00518       fromvarname = ast_var_name(variablesfrom);
00519       fromvarval = ast_var_value(variablesfrom);
00520       tovarname = 0;
00521 
00522       /* now, quick see if that var is in the 'to' cdr already */
00523       AST_LIST_TRAVERSE(headpto, variablesto, entries) {
00524 
00525          /* now, quick see if that var is in the 'to' cdr already */
00526          if ( strcasecmp(fromvarname, ast_var_name(variablesto)) == 0 ) {
00527             tovarname = ast_var_name(variablesto);
00528             tovarval = ast_var_value(variablesto);
00529             break;
00530          }
00531       }
00532       if (tovarname && strcasecmp(fromvarval,tovarval) != 0) {  /* this message here to see how irritating the userbase finds it */
00533          ast_log(LOG_NOTICE, "Merging CDR's: variable %s value %s dropped in favor of value %s\n", tovarname, fromvarval, tovarval);
00534          continue;
00535       } else if (tovarname && strcasecmp(fromvarval,tovarval) == 0) /* if they are the same, the job is done */
00536          continue;
00537 
00538       /* rip this var out of the from cdr, and stick it in the to cdr */
00539       AST_LIST_MOVE_CURRENT(headpto, entries);
00540    }
00541    AST_LIST_TRAVERSE_SAFE_END;
00542 }
00543 
00544 void ast_cdr_merge(struct ast_cdr *to, struct ast_cdr *from)
00545 {
00546    struct ast_cdr *zcdr;
00547    struct ast_cdr *lto = NULL;
00548    struct ast_cdr *lfrom = NULL;
00549    int discard_from = 0;
00550 
00551    if (!to || !from)
00552       return;
00553 
00554    /* don't merge into locked CDR's -- it's bad business */
00555    if (ast_test_flag(to, AST_CDR_FLAG_LOCKED)) {
00556       zcdr = to; /* safety valve? */
00557       while (to->next) {
00558          lto = to;
00559          to = to->next;
00560       }
00561 
00562       if (ast_test_flag(to, AST_CDR_FLAG_LOCKED)) {
00563          ast_log(LOG_WARNING, "Merging into locked CDR... no choice.\n");
00564          to = zcdr; /* safety-- if all there are is locked CDR's, then.... ?? */
00565          lto = NULL;
00566       }
00567    }
00568 
00569    if (ast_test_flag(from, AST_CDR_FLAG_LOCKED)) {
00570       struct ast_cdr *llfrom = NULL;
00571       discard_from = 1;
00572       if (lto) {
00573          /* insert the from stuff after lto */
00574          lto->next = from;
00575          lfrom = from;
00576          while (lfrom && lfrom->next) {
00577             if (!lfrom->next->next)
00578                llfrom = lfrom;
00579             lfrom = lfrom->next;
00580          }
00581          /* rip off the last entry and put a copy of the to at the end */
00582          if (llfrom) {
00583             llfrom->next = to;
00584          }
00585          from = lfrom;
00586       } else {
00587          /* save copy of the current *to cdr */
00588          struct ast_cdr tcdr;
00589          memcpy(&tcdr, to, sizeof(tcdr));
00590          /* copy in the locked from cdr */
00591          memcpy(to, from, sizeof(*to));
00592          lfrom = from;
00593          while (lfrom && lfrom->next) {
00594             if (!lfrom->next->next)
00595                llfrom = lfrom;
00596             lfrom = lfrom->next;
00597          }
00598          from->next = NULL;
00599          /* rip off the last entry and put a copy of the to at the end */
00600          if (llfrom == from) {
00601             to = to->next = ast_cdr_dup(&tcdr);
00602          } else if (llfrom) {
00603             to = llfrom->next = ast_cdr_dup(&tcdr);
00604          }
00605          from = lfrom;
00606       }
00607    }
00608 
00609    if (!ast_tvzero(from->start)) {
00610       if (!ast_tvzero(to->start)) {
00611          if (ast_tvcmp(to->start, from->start) > 0 ) {
00612             to->start = from->start; /* use the earliest time */
00613             from->start = ast_tv(0,0); /* we actively "steal" these values */
00614          }
00615          /* else nothing to do */
00616       } else {
00617          to->start = from->start;
00618          from->start = ast_tv(0,0); /* we actively "steal" these values */
00619       }
00620    }
00621    if (!ast_tvzero(from->answer)) {
00622       if (!ast_tvzero(to->answer)) {
00623          if (ast_tvcmp(to->answer, from->answer) > 0 ) {
00624             to->answer = from->answer; /* use the earliest time */
00625             from->answer = ast_tv(0,0); /* we actively "steal" these values */
00626          }
00627          /* we got the earliest answer time, so we'll settle for that? */
00628       } else {
00629          to->answer = from->answer;
00630          from->answer = ast_tv(0,0); /* we actively "steal" these values */
00631       }
00632    }
00633    if (!ast_tvzero(from->end)) {
00634       if (!ast_tvzero(to->end)) {
00635          if (ast_tvcmp(to->end, from->end) < 0 ) {
00636             to->end = from->end; /* use the latest time */
00637             from->end = ast_tv(0,0); /* we actively "steal" these values */
00638             to->duration = to->end.tv_sec - to->start.tv_sec;  /* don't forget to update the duration, billsec, when we set end */
00639             to->billsec = ast_tvzero(to->answer) ? 0 : to->end.tv_sec - to->answer.tv_sec;
00640          }
00641          /* else, nothing to do */
00642       } else {
00643          to->end = from->end;
00644          from->end = ast_tv(0,0); /* we actively "steal" these values */
00645          to->duration = to->end.tv_sec - to->start.tv_sec;
00646          to->billsec = ast_tvzero(to->answer) ? 0 : to->end.tv_sec - to->answer.tv_sec;
00647       }
00648    }
00649    if (to->disposition < from->disposition) {
00650       to->disposition = from->disposition;
00651       from->disposition = AST_CDR_NOANSWER;
00652    }
00653    if (ast_strlen_zero(to->lastapp) && !ast_strlen_zero(from->lastapp)) {
00654       ast_copy_string(to->lastapp, from->lastapp, sizeof(to->lastapp));
00655       from->lastapp[0] = 0; /* theft */
00656    }
00657    if (ast_strlen_zero(to->lastdata) && !ast_strlen_zero(from->lastdata)) {
00658       ast_copy_string(to->lastdata, from->lastdata, sizeof(to->lastdata));
00659       from->lastdata[0] = 0; /* theft */
00660    }
00661    if (ast_strlen_zero(to->dcontext) && !ast_strlen_zero(from->dcontext)) {
00662       ast_copy_string(to->dcontext, from->dcontext, sizeof(to->dcontext));
00663       from->dcontext[0] = 0; /* theft */
00664    }
00665    if (ast_strlen_zero(to->dstchannel) && !ast_strlen_zero(from->dstchannel)) {
00666       ast_copy_string(to->dstchannel, from->dstchannel, sizeof(to->dstchannel));
00667       from->dstchannel[0] = 0; /* theft */
00668    }
00669    if (!ast_strlen_zero(from->channel) && (ast_strlen_zero(to->channel) || !strncasecmp(from->channel, "Agent/", 6))) {
00670       ast_copy_string(to->channel, from->channel, sizeof(to->channel));
00671       from->channel[0] = 0; /* theft */
00672    }
00673    if (ast_strlen_zero(to->src) && !ast_strlen_zero(from->src)) {
00674       ast_copy_string(to->src, from->src, sizeof(to->src));
00675       from->src[0] = 0; /* theft */
00676    }
00677    if (ast_strlen_zero(to->clid) && !ast_strlen_zero(from->clid)) {
00678       ast_copy_string(to->clid, from->clid, sizeof(to->clid));
00679       from->clid[0] = 0; /* theft */
00680    }
00681    if (ast_strlen_zero(to->dst) && !ast_strlen_zero(from->dst)) {
00682       ast_copy_string(to->dst, from->dst, sizeof(to->dst));
00683       from->dst[0] = 0; /* theft */
00684    }
00685    if (!to->amaflags)
00686       to->amaflags = AST_CDR_DOCUMENTATION;
00687    if (!from->amaflags)
00688       from->amaflags = AST_CDR_DOCUMENTATION; /* make sure both amaflags are set to something (DOC is default) */
00689    if (ast_test_flag(from, AST_CDR_FLAG_LOCKED) || (to->amaflags == AST_CDR_DOCUMENTATION && from->amaflags != AST_CDR_DOCUMENTATION)) {
00690       to->amaflags = from->amaflags;
00691    }
00692    if (ast_test_flag(from, AST_CDR_FLAG_LOCKED) || (ast_strlen_zero(to->accountcode) && !ast_strlen_zero(from->accountcode))) {
00693       ast_copy_string(to->accountcode, from->accountcode, sizeof(to->accountcode));
00694    }
00695    if (ast_test_flag(from, AST_CDR_FLAG_LOCKED) || (ast_strlen_zero(to->peeraccount) && !ast_strlen_zero(from->peeraccount))) {
00696       ast_copy_string(to->peeraccount, from->peeraccount, sizeof(to->peeraccount));
00697    }
00698    if (ast_test_flag(from, AST_CDR_FLAG_LOCKED) || (ast_strlen_zero(to->userfield) && !ast_strlen_zero(from->userfield))) {
00699       ast_copy_string(to->userfield, from->userfield, sizeof(to->userfield));
00700    }
00701    /* flags, varsead, ? */
00702    cdr_merge_vars(from, to);
00703 
00704    if (ast_test_flag(from, AST_CDR_FLAG_KEEP_VARS))
00705       ast_set_flag(to, AST_CDR_FLAG_KEEP_VARS);
00706    if (ast_test_flag(from, AST_CDR_FLAG_POSTED))
00707       ast_set_flag(to, AST_CDR_FLAG_POSTED);
00708    if (ast_test_flag(from, AST_CDR_FLAG_LOCKED))
00709       ast_set_flag(to, AST_CDR_FLAG_LOCKED);
00710    if (ast_test_flag(from, AST_CDR_FLAG_CHILD))
00711       ast_set_flag(to, AST_CDR_FLAG_CHILD);
00712    if (ast_test_flag(from, AST_CDR_FLAG_POST_DISABLED))
00713       ast_set_flag(to, AST_CDR_FLAG_POST_DISABLED);
00714 
00715    /* last, but not least, we need to merge any forked CDRs to the 'to' cdr */
00716    while (from->next) {
00717       /* just rip 'em off the 'from' and insert them on the 'to' */
00718       zcdr = from->next;
00719       from->next = zcdr->next;
00720       zcdr->next = NULL;
00721       /* zcdr is now ripped from the current list; */
00722       ast_cdr_append(to, zcdr);
00723    }
00724    if (discard_from)
00725       ast_cdr_discard(from);
00726 }
00727 
00728 void ast_cdr_start(struct ast_cdr *cdr)
00729 {
00730    for (; cdr; cdr = cdr->next) {
00731       if (!ast_test_flag(cdr, AST_CDR_FLAG_LOCKED)) {
00732          check_post(cdr);
00733          cdr->start = ast_tvnow();
00734       }
00735    }
00736 }
00737 
00738 void ast_cdr_answer(struct ast_cdr *cdr)
00739 {
00740 
00741    for (; cdr; cdr = cdr->next) {
00742       if (ast_test_flag(cdr, AST_CDR_FLAG_ANSLOCKED))
00743          continue;
00744       if (ast_test_flag(cdr, AST_CDR_FLAG_DONT_TOUCH) && ast_test_flag(cdr, AST_CDR_FLAG_LOCKED))
00745          continue;
00746       check_post(cdr);
00747       if (cdr->disposition < AST_CDR_ANSWERED)
00748          cdr->disposition = AST_CDR_ANSWERED;
00749       if (ast_tvzero(cdr->answer))
00750          cdr->answer = ast_tvnow();
00751    }
00752 }
00753 
00754 void ast_cdr_busy(struct ast_cdr *cdr)
00755 {
00756 
00757    for (; cdr; cdr = cdr->next) {
00758       if (!ast_test_flag(cdr, AST_CDR_FLAG_LOCKED)) {
00759          check_post(cdr);
00760          cdr->disposition = AST_CDR_BUSY;
00761       }
00762    }
00763 }
00764 
00765 void ast_cdr_failed(struct ast_cdr *cdr)
00766 {
00767    for (; cdr; cdr = cdr->next) {
00768       check_post(cdr);
00769       if (!ast_test_flag(cdr, AST_CDR_FLAG_LOCKED)) {
00770          check_post(cdr);
00771          if (cdr->disposition < AST_CDR_FAILED)
00772             cdr->disposition = AST_CDR_FAILED;
00773       }
00774    }
00775 }
00776 
00777 void ast_cdr_noanswer(struct ast_cdr *cdr)
00778 {
00779    while (cdr) {
00780       if (!ast_test_flag(cdr, AST_CDR_FLAG_LOCKED)) {
00781          check_post(cdr);
00782          cdr->disposition = AST_CDR_NOANSWER;
00783       }
00784       cdr = cdr->next;
00785    }
00786 }
00787 
00788 /* everywhere ast_cdr_disposition is called, it will call ast_cdr_failed()
00789    if ast_cdr_disposition returns a non-zero value */
00790 
00791 int ast_cdr_disposition(struct ast_cdr *cdr, int cause)
00792 {
00793    int res = 0;
00794 
00795    for (; cdr; cdr = cdr->next) {
00796       switch (cause) {  /* handle all the non failure, busy cases, return 0 not to set disposition,
00797                      return -1 to set disposition to FAILED */
00798       case AST_CAUSE_BUSY:
00799          ast_cdr_busy(cdr);
00800          break;
00801       case AST_CAUSE_NO_ANSWER:
00802          ast_cdr_noanswer(cdr);
00803          break;
00804       case AST_CAUSE_NORMAL:
00805          break;
00806       default:
00807          res = -1;
00808       }
00809    }
00810    return res;
00811 }
00812 
00813 void ast_cdr_setdestchan(struct ast_cdr *cdr, const char *chann)
00814 {
00815    for (; cdr; cdr = cdr->next) {
00816       if (!ast_test_flag(cdr, AST_CDR_FLAG_LOCKED)) {
00817          check_post(cdr);
00818          ast_copy_string(cdr->dstchannel, chann, sizeof(cdr->dstchannel));
00819       }
00820    }
00821 }
00822 
00823 void ast_cdr_setapp(struct ast_cdr *cdr, const char *app, const char *data)
00824 {
00825 
00826    for (; cdr; cdr = cdr->next) {
00827       if (!ast_test_flag(cdr, AST_CDR_FLAG_LOCKED)) {
00828          check_post(cdr);
00829          ast_copy_string(cdr->lastapp, S_OR(app, ""), sizeof(cdr->lastapp));
00830          ast_copy_string(cdr->lastdata, S_OR(data, ""), sizeof(cdr->lastdata));
00831       }
00832    }
00833 }
00834 
00835 void ast_cdr_setanswer(struct ast_cdr *cdr, struct timeval t)
00836 {
00837 
00838    for (; cdr; cdr = cdr->next) {
00839       if (ast_test_flag(cdr, AST_CDR_FLAG_ANSLOCKED))
00840          continue;
00841       if (ast_test_flag(cdr, AST_CDR_FLAG_DONT_TOUCH) && ast_test_flag(cdr, AST_CDR_FLAG_LOCKED))
00842          continue;
00843       check_post(cdr);
00844       cdr->answer = t;
00845    }
00846 }
00847 
00848 void ast_cdr_setdisposition(struct ast_cdr *cdr, long int disposition)
00849 {
00850 
00851    for (; cdr; cdr = cdr->next) {
00852       if (ast_test_flag(cdr, AST_CDR_FLAG_LOCKED))
00853          continue;
00854       check_post(cdr);
00855       cdr->disposition = disposition;
00856    }
00857 }
00858 
00859 /* set cid info for one record */
00860 static void set_one_cid(struct ast_cdr *cdr, struct ast_channel *c)
00861 {
00862    const char *num;
00863 
00864    if (!cdr) {
00865       return;
00866    }
00867 
00868    /* Grab source from ANI or normal Caller*ID */
00869    num = S_COR(c->caller.ani.number.valid, c->caller.ani.number.str,
00870       S_COR(c->caller.id.number.valid, c->caller.id.number.str, NULL));
00871    ast_callerid_merge(cdr->clid, sizeof(cdr->clid),
00872       S_COR(c->caller.id.name.valid, c->caller.id.name.str, NULL), num, "");
00873    ast_copy_string(cdr->src, S_OR(num, ""), sizeof(cdr->src));
00874    ast_cdr_setvar(cdr, "dnid", S_OR(c->dialed.number.str, ""), 0);
00875 
00876    if (c->caller.id.subaddress.valid) {
00877       ast_cdr_setvar(cdr, "callingsubaddr", S_OR(c->caller.id.subaddress.str, ""), 0);
00878    }
00879    if (c->dialed.subaddress.valid) {
00880       ast_cdr_setvar(cdr, "calledsubaddr", S_OR(c->dialed.subaddress.str, ""), 0);
00881    }
00882 }
00883 
00884 int ast_cdr_setcid(struct ast_cdr *cdr, struct ast_channel *c)
00885 {
00886    for (; cdr; cdr = cdr->next) {
00887       if (!ast_test_flag(cdr, AST_CDR_FLAG_LOCKED))
00888          set_one_cid(cdr, c);
00889    }
00890    return 0;
00891 }
00892 
00893 static int cdr_seq_inc(struct ast_cdr *cdr)
00894 {
00895    return (cdr->sequence = ast_atomic_fetchadd_int(&cdr_sequence, +1));
00896 }
00897 
00898 int ast_cdr_init(struct ast_cdr *cdr, struct ast_channel *c)
00899 {
00900    for ( ; cdr ; cdr = cdr->next) {
00901       if (!ast_test_flag(cdr, AST_CDR_FLAG_LOCKED)) {
00902          ast_copy_string(cdr->channel, c->name, sizeof(cdr->channel));
00903          set_one_cid(cdr, c);
00904          cdr_seq_inc(cdr);
00905 
00906          cdr->disposition = (c->_state == AST_STATE_UP) ?  AST_CDR_ANSWERED : AST_CDR_NOANSWER;
00907          cdr->amaflags = c->amaflags ? c->amaflags :  ast_default_amaflags;
00908          ast_copy_string(cdr->accountcode, c->accountcode, sizeof(cdr->accountcode));
00909          ast_copy_string(cdr->peeraccount, c->peeraccount, sizeof(cdr->peeraccount));
00910          /* Destination information */
00911          ast_copy_string(cdr->dst, S_OR(c->macroexten,c->exten), sizeof(cdr->dst));
00912          ast_copy_string(cdr->dcontext, S_OR(c->macrocontext,c->context), sizeof(cdr->dcontext));
00913          /* Unique call identifier */
00914          ast_copy_string(cdr->uniqueid, c->uniqueid, sizeof(cdr->uniqueid));
00915          /* Linked call identifier */
00916          ast_copy_string(cdr->linkedid, c->linkedid, sizeof(cdr->linkedid));
00917       }
00918    }
00919    return 0;
00920 }
00921 
00922 /* Three routines were "fixed" via 10668, and later shown that
00923    users were depending on this behavior. ast_cdr_end,
00924    ast_cdr_setvar and ast_cdr_answer are the three routines.
00925    While most of the other routines would not touch
00926    LOCKED cdr's, these three routines were designed to
00927    operate on locked CDR's as a matter of course.
00928    I now appreciate how this plays with the ForkCDR app,
00929    which forms these cdr chains in the first place.
00930    cdr_end is pretty key: all cdrs created are closed
00931    together. They only vary by start time. Arithmetically,
00932    users can calculate the subintervals they wish to track. */
00933 
00934 void ast_cdr_end(struct ast_cdr *cdr)
00935 {
00936    for ( ; cdr ; cdr = cdr->next) {
00937       if (ast_test_flag(cdr, AST_CDR_FLAG_DONT_TOUCH) && ast_test_flag(cdr, AST_CDR_FLAG_LOCKED))
00938          continue;
00939       check_post(cdr);
00940       if (ast_tvzero(cdr->end))
00941          cdr->end = ast_tvnow();
00942       if (ast_tvzero(cdr->start)) {
00943          ast_log(LOG_WARNING, "CDR on channel '%s' has not started\n", S_OR(cdr->channel, "<unknown>"));
00944          cdr->disposition = AST_CDR_FAILED;
00945       } else
00946          cdr->duration = cdr->end.tv_sec - cdr->start.tv_sec;
00947       if (ast_tvzero(cdr->answer)) {
00948          if (cdr->disposition == AST_CDR_ANSWERED) {
00949             ast_log(LOG_WARNING, "CDR on channel '%s' has no answer time but is 'ANSWERED'\n", S_OR(cdr->channel, "<unknown>"));
00950             cdr->disposition = AST_CDR_FAILED;
00951          }
00952       } else {
00953          cdr->billsec = cdr->end.tv_sec - cdr->answer.tv_sec;
00954          if (ast_test_flag(&ast_options, AST_OPT_FLAG_INITIATED_SECONDS))
00955             cdr->billsec += cdr->end.tv_usec > cdr->answer.tv_usec ? 1 : 0;
00956       }
00957    }
00958 }
00959 
00960 char *ast_cdr_disp2str(int disposition)
00961 {
00962    switch (disposition) {
00963    case AST_CDR_NULL:
00964       return "NO ANSWER"; /* by default, for backward compatibility */
00965    case AST_CDR_NOANSWER:
00966       return "NO ANSWER";
00967    case AST_CDR_FAILED:
00968       return "FAILED";
00969    case AST_CDR_BUSY:
00970       return "BUSY";
00971    case AST_CDR_ANSWERED:
00972       return "ANSWERED";
00973    }
00974    return "UNKNOWN";
00975 }
00976 
00977 /*! Converts AMA flag to printable string */
00978 char *ast_cdr_flags2str(int flag)
00979 {
00980    switch (flag) {
00981    case AST_CDR_OMIT:
00982       return "OMIT";
00983    case AST_CDR_BILLING:
00984       return "BILLING";
00985    case AST_CDR_DOCUMENTATION:
00986       return "DOCUMENTATION";
00987    }
00988    return "Unknown";
00989 }
00990 
00991 int ast_cdr_setaccount(struct ast_channel *chan, const char *account)
00992 {
00993    struct ast_cdr *cdr = chan->cdr;
00994    const char *old_acct = "";
00995 
00996    if (!ast_strlen_zero(chan->accountcode)) {
00997       old_acct = ast_strdupa(chan->accountcode);
00998    }
00999 
01000    ast_string_field_set(chan, accountcode, account);
01001    for ( ; cdr ; cdr = cdr->next) {
01002       if (!ast_test_flag(cdr, AST_CDR_FLAG_LOCKED)) {
01003          ast_copy_string(cdr->accountcode, chan->accountcode, sizeof(cdr->accountcode));
01004       }
01005    }
01006 
01007    ast_manager_event(chan, EVENT_FLAG_CALL, "NewAccountCode",
01008          "Channel: %s\r\n"
01009          "Uniqueid: %s\r\n"
01010          "AccountCode: %s\r\n"
01011          "OldAccountCode: %s\r\n",
01012          chan->name, chan->uniqueid, chan->accountcode, old_acct);
01013 
01014    return 0;
01015 }
01016 
01017 int ast_cdr_setpeeraccount(struct ast_channel *chan, const char *account)
01018 {
01019    struct ast_cdr *cdr = chan->cdr;
01020    const char *old_acct = "";
01021 
01022    if (!ast_strlen_zero(chan->peeraccount)) {
01023       old_acct = ast_strdupa(chan->peeraccount);
01024    }
01025 
01026    ast_string_field_set(chan, peeraccount, account);
01027    for ( ; cdr ; cdr = cdr->next) {
01028       if (!ast_test_flag(cdr, AST_CDR_FLAG_LOCKED)) {
01029          ast_copy_string(cdr->peeraccount, chan->peeraccount, sizeof(cdr->peeraccount));
01030       }
01031    }
01032 
01033    ast_manager_event(chan, EVENT_FLAG_CALL, "NewPeerAccount",
01034          "Channel: %s\r\n"
01035          "Uniqueid: %s\r\n"
01036          "PeerAccount: %s\r\n"
01037          "OldPeerAccount: %s\r\n",
01038          chan->name, chan->uniqueid, chan->peeraccount, old_acct);
01039 
01040    return 0;
01041 }
01042 
01043 int ast_cdr_setamaflags(struct ast_channel *chan, const char *flag)
01044 {
01045    struct ast_cdr *cdr;
01046    int newflag = ast_cdr_amaflags2int(flag);
01047    if (newflag) {
01048       for (cdr = chan->cdr; cdr; cdr = cdr->next) {
01049          if (!ast_test_flag(cdr, AST_CDR_FLAG_LOCKED)) {
01050             cdr->amaflags = newflag;
01051          }
01052       }
01053    }
01054 
01055    return 0;
01056 }
01057 
01058 int ast_cdr_setuserfield(struct ast_channel *chan, const char *userfield)
01059 {
01060    struct ast_cdr *cdr = chan->cdr;
01061 
01062    for ( ; cdr ; cdr = cdr->next) {
01063       if (!ast_test_flag(cdr, AST_CDR_FLAG_LOCKED))
01064          ast_copy_string(cdr->userfield, userfield, sizeof(cdr->userfield));
01065    }
01066 
01067    return 0;
01068 }
01069 
01070 int ast_cdr_appenduserfield(struct ast_channel *chan, const char *userfield)
01071 {
01072    struct ast_cdr *cdr = chan->cdr;
01073 
01074    for ( ; cdr ; cdr = cdr->next) {
01075       int len = strlen(cdr->userfield);
01076 
01077       if (!ast_test_flag(cdr, AST_CDR_FLAG_LOCKED))
01078          ast_copy_string(cdr->userfield + len, userfield, sizeof(cdr->userfield) - len);
01079    }
01080 
01081    return 0;
01082 }
01083 
01084 int ast_cdr_update(struct ast_channel *c)
01085 {
01086    struct ast_cdr *cdr = c->cdr;
01087 
01088    for ( ; cdr ; cdr = cdr->next) {
01089       if (!ast_test_flag(cdr, AST_CDR_FLAG_LOCKED)) {
01090          set_one_cid(cdr, c);
01091 
01092          /* Copy account code et-al */
01093          ast_copy_string(cdr->accountcode, c->accountcode, sizeof(cdr->accountcode));
01094          ast_copy_string(cdr->peeraccount, c->peeraccount, sizeof(cdr->peeraccount));
01095          ast_copy_string(cdr->linkedid, c->linkedid, sizeof(cdr->linkedid));
01096 
01097          /* Destination information */ /* XXX privilege macro* ? */
01098          ast_copy_string(cdr->dst, S_OR(c->macroexten, c->exten), sizeof(cdr->dst));
01099          ast_copy_string(cdr->dcontext, S_OR(c->macrocontext, c->context), sizeof(cdr->dcontext));
01100       }
01101    }
01102 
01103    return 0;
01104 }
01105 
01106 int ast_cdr_amaflags2int(const char *flag)
01107 {
01108    if (!strcasecmp(flag, "default"))
01109       return 0;
01110    if (!strcasecmp(flag, "omit"))
01111       return AST_CDR_OMIT;
01112    if (!strcasecmp(flag, "billing"))
01113       return AST_CDR_BILLING;
01114    if (!strcasecmp(flag, "documentation"))
01115       return AST_CDR_DOCUMENTATION;
01116    return -1;
01117 }
01118 
01119 static void post_cdr(struct ast_cdr *cdr)
01120 {
01121    struct ast_cdr_beitem *i;
01122 
01123    for ( ; cdr ; cdr = cdr->next) {
01124       if (!unanswered && cdr->disposition < AST_CDR_ANSWERED && (ast_strlen_zero(cdr->channel) || ast_strlen_zero(cdr->dstchannel))) {
01125          /* For people, who don't want to see unanswered single-channel events */
01126          ast_set_flag(cdr, AST_CDR_FLAG_POST_DISABLED);
01127          continue;
01128       }
01129 
01130       /* don't post CDRs that are for dialed channels unless those
01131        * channels were originated from asterisk (pbx_spool, manager,
01132        * cli) */
01133       if (ast_test_flag(cdr, AST_CDR_FLAG_DIALED) && !ast_test_flag(cdr, AST_CDR_FLAG_ORIGINATED)) {
01134          ast_set_flag(cdr, AST_CDR_FLAG_POST_DISABLED);
01135          continue;
01136       }
01137 
01138       check_post(cdr);
01139       ast_set_flag(cdr, AST_CDR_FLAG_POSTED);
01140       if (ast_test_flag(cdr, AST_CDR_FLAG_POST_DISABLED))
01141          continue;
01142       AST_RWLIST_RDLOCK(&be_list);
01143       AST_RWLIST_TRAVERSE(&be_list, i, list) {
01144          i->be(cdr);
01145       }
01146       AST_RWLIST_UNLOCK(&be_list);
01147    }
01148 }
01149 
01150 void ast_cdr_reset(struct ast_cdr *cdr, struct ast_flags *_flags)
01151 {
01152    struct ast_cdr *duplicate;
01153    struct ast_flags flags = { 0 };
01154 
01155    if (_flags)
01156       ast_copy_flags(&flags, _flags, AST_FLAGS_ALL);
01157 
01158    for ( ; cdr ; cdr = cdr->next) {
01159       /* Detach if post is requested */
01160       if (ast_test_flag(&flags, AST_CDR_FLAG_LOCKED) || !ast_test_flag(cdr, AST_CDR_FLAG_LOCKED)) {
01161          if (ast_test_flag(&flags, AST_CDR_FLAG_POSTED)) {
01162             ast_cdr_end(cdr);
01163             if ((duplicate = ast_cdr_dup_unique_swap(cdr))) {
01164                ast_cdr_detach(duplicate);
01165             }
01166             ast_set_flag(cdr, AST_CDR_FLAG_POSTED);
01167          }
01168 
01169          /* enable CDR only */
01170          if (ast_test_flag(&flags, AST_CDR_FLAG_POST_ENABLE)) {
01171             ast_clear_flag(cdr, AST_CDR_FLAG_POST_DISABLED);
01172             continue;
01173          }
01174 
01175          /* clear variables */
01176          if (!ast_test_flag(&flags, AST_CDR_FLAG_KEEP_VARS)) {
01177             ast_cdr_free_vars(cdr, 0);
01178          }
01179 
01180          /* Reset to initial state */
01181          ast_clear_flag(cdr, AST_FLAGS_ALL);
01182          memset(&cdr->start, 0, sizeof(cdr->start));
01183          memset(&cdr->end, 0, sizeof(cdr->end));
01184          memset(&cdr->answer, 0, sizeof(cdr->answer));
01185          cdr->billsec = 0;
01186          cdr->duration = 0;
01187          ast_cdr_start(cdr);
01188          cdr->disposition = AST_CDR_NOANSWER;
01189       }
01190    }
01191 }
01192 
01193 void ast_cdr_specialized_reset(struct ast_cdr *cdr, struct ast_flags *_flags)
01194 {
01195    struct ast_flags flags = { 0 };
01196 
01197    if (_flags)
01198       ast_copy_flags(&flags, _flags, AST_FLAGS_ALL);
01199 
01200    /* Reset to initial state */
01201    if (ast_test_flag(cdr, AST_CDR_FLAG_POST_DISABLED)) { /* But do NOT lose the NoCDR() setting */
01202       ast_clear_flag(cdr, AST_FLAGS_ALL);
01203       ast_set_flag(cdr, AST_CDR_FLAG_POST_DISABLED);
01204    } else {
01205       ast_clear_flag(cdr, AST_FLAGS_ALL);
01206    }
01207 
01208    memset(&cdr->start, 0, sizeof(cdr->start));
01209    memset(&cdr->end, 0, sizeof(cdr->end));
01210    memset(&cdr->answer, 0, sizeof(cdr->answer));
01211    cdr->billsec = 0;
01212    cdr->duration = 0;
01213    ast_cdr_start(cdr);
01214    cdr->disposition = AST_CDR_NULL;
01215 }
01216 
01217 struct ast_cdr *ast_cdr_append(struct ast_cdr *cdr, struct ast_cdr *newcdr)
01218 {
01219    struct ast_cdr *ret;
01220 
01221    if (cdr) {
01222       ret = cdr;
01223 
01224       while (cdr->next)
01225          cdr = cdr->next;
01226       cdr->next = newcdr;
01227    } else {
01228       ret = newcdr;
01229    }
01230 
01231    return ret;
01232 }
01233 
01234 /*! \note Don't call without cdr_batch_lock */
01235 static void reset_batch(void)
01236 {
01237    batch->size = 0;
01238    batch->head = NULL;
01239    batch->tail = NULL;
01240 }
01241 
01242 /*! \note Don't call without cdr_batch_lock */
01243 static int init_batch(void)
01244 {
01245    /* This is the single meta-batch used to keep track of all CDRs during the entire life of the program */
01246    if (!(batch = ast_malloc(sizeof(*batch))))
01247       return -1;
01248 
01249    reset_batch();
01250 
01251    return 0;
01252 }
01253 
01254 static void *do_batch_backend_process(void *data)
01255 {
01256    struct ast_cdr_batch_item *processeditem;
01257    struct ast_cdr_batch_item *batchitem = data;
01258 
01259    /* Push each CDR into storage mechanism(s) and free all the memory */
01260    while (batchitem) {
01261       post_cdr(batchitem->cdr);
01262       ast_cdr_free(batchitem->cdr);
01263       processeditem = batchitem;
01264       batchitem = batchitem->next;
01265       ast_free(processeditem);
01266    }
01267 
01268    return NULL;
01269 }
01270 
01271 void ast_cdr_submit_batch(int do_shutdown)
01272 {
01273    struct ast_cdr_batch_item *oldbatchitems = NULL;
01274    pthread_t batch_post_thread = AST_PTHREADT_NULL;
01275 
01276    /* if there's no batch, or no CDRs in the batch, then there's nothing to do */
01277    if (!batch || !batch->head)
01278       return;
01279 
01280    /* move the old CDRs aside, and prepare a new CDR batch */
01281    ast_mutex_lock(&cdr_batch_lock);
01282    oldbatchitems = batch->head;
01283    reset_batch();
01284    ast_mutex_unlock(&cdr_batch_lock);
01285 
01286    /* if configured, spawn a new thread to post these CDRs,
01287       also try to save as much as possible if we are shutting down safely */
01288    if (batchscheduleronly || do_shutdown) {
01289       ast_debug(1, "CDR single-threaded batch processing begins now\n");
01290       do_batch_backend_process(oldbatchitems);
01291    } else {
01292       if (ast_pthread_create_detached_background(&batch_post_thread, NULL, do_batch_backend_process, oldbatchitems)) {
01293          ast_log(LOG_WARNING, "CDR processing thread could not detach, now trying in this thread\n");
01294          do_batch_backend_process(oldbatchitems);
01295       } else {
01296          ast_debug(1, "CDR multi-threaded batch processing begins now\n");
01297       }
01298    }
01299 }
01300 
01301 static int submit_scheduled_batch(const void *data)
01302 {
01303    ast_cdr_submit_batch(0);
01304    /* manually reschedule from this point in time */
01305    ast_mutex_lock(&cdr_sched_lock);
01306    cdr_sched = ast_sched_add(sched, batchtime * 1000, submit_scheduled_batch, NULL);
01307    ast_mutex_unlock(&cdr_sched_lock);
01308    /* returning zero so the scheduler does not automatically reschedule */
01309    return 0;
01310 }
01311 
01312 /*! Do not hold the batch lock while calling this function */
01313 static void submit_unscheduled_batch(void)
01314 {
01315    /* Prevent two deletes from happening at the same time */
01316    ast_mutex_lock(&cdr_sched_lock);
01317    /* this is okay since we are not being called from within the scheduler */
01318    AST_SCHED_DEL(sched, cdr_sched);
01319    /* schedule the submission to occur ASAP (1 ms) */
01320    cdr_sched = ast_sched_add(sched, 1, submit_scheduled_batch, NULL);
01321    ast_mutex_unlock(&cdr_sched_lock);
01322 
01323    /* signal the do_cdr thread to wakeup early and do some work (that lazy thread ;) */
01324    ast_mutex_lock(&cdr_pending_lock);
01325    ast_cond_signal(&cdr_pending_cond);
01326    ast_mutex_unlock(&cdr_pending_lock);
01327 }
01328 
01329 void ast_cdr_detach(struct ast_cdr *cdr)
01330 {
01331    struct ast_cdr_batch_item *newtail;
01332    int curr;
01333    int submit_batch = 0;
01334 
01335    if (!cdr)
01336       return;
01337 
01338    /* maybe they disabled CDR stuff completely, so just drop it */
01339    if (!enabled) {
01340       ast_debug(1, "Dropping CDR !\n");
01341       ast_set_flag(cdr, AST_CDR_FLAG_POST_DISABLED);
01342       ast_cdr_free(cdr);
01343       return;
01344    }
01345 
01346    /* post stuff immediately if we are not in batch mode, this is legacy behaviour */
01347    if (!batchmode) {
01348       post_cdr(cdr);
01349       ast_cdr_free(cdr);
01350       return;
01351    }
01352 
01353    /* otherwise, each CDR gets put into a batch list (at the end) */
01354    ast_debug(1, "CDR detaching from this thread\n");
01355 
01356    /* we'll need a new tail for every CDR */
01357    if (!(newtail = ast_calloc(1, sizeof(*newtail)))) {
01358       post_cdr(cdr);
01359       ast_cdr_free(cdr);
01360       return;
01361    }
01362 
01363    /* don't traverse a whole list (just keep track of the tail) */
01364    ast_mutex_lock(&cdr_batch_lock);
01365    if (!batch)
01366       init_batch();
01367    if (!batch->head) {
01368       /* new batch is empty, so point the head at the new tail */
01369       batch->head = newtail;
01370    } else {
01371       /* already got a batch with something in it, so just append a new tail */
01372       batch->tail->next = newtail;
01373    }
01374    newtail->cdr = cdr;
01375    batch->tail = newtail;
01376    curr = batch->size++;
01377 
01378    /* if we have enough stuff to post, then do it */
01379    if (curr >= (batchsize - 1)) {
01380       submit_batch = 1;
01381    }
01382    ast_mutex_unlock(&cdr_batch_lock);
01383 
01384    /* Don't call submit_unscheduled_batch with the cdr_batch_lock held */
01385    if (submit_batch) {
01386       submit_unscheduled_batch();
01387    }
01388 }
01389 
01390 static void *do_cdr(void *data)
01391 {
01392    struct timespec timeout;
01393    int schedms;
01394    int numevents = 0;
01395 
01396    for (;;) {
01397       struct timeval now;
01398       schedms = ast_sched_wait(sched);
01399       /* this shouldn't happen, but provide a 1 second default just in case */
01400       if (schedms <= 0)
01401          schedms = 1000;
01402       now = ast_tvadd(ast_tvnow(), ast_samp2tv(schedms, 1000));
01403       timeout.tv_sec = now.tv_sec;
01404       timeout.tv_nsec = now.tv_usec * 1000;
01405       /* prevent stuff from clobbering cdr_pending_cond, then wait on signals sent to it until the timeout expires */
01406       ast_mutex_lock(&cdr_pending_lock);
01407       ast_cond_timedwait(&cdr_pending_cond, &cdr_pending_lock, &timeout);
01408       numevents = ast_sched_runq(sched);
01409       ast_mutex_unlock(&cdr_pending_lock);
01410       ast_debug(2, "Processed %d scheduled CDR batches from the run queue\n", numevents);
01411    }
01412 
01413    return NULL;
01414 }
01415 
01416 static char *handle_cli_status(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
01417 {
01418    struct ast_cdr_beitem *beitem=NULL;
01419    int cnt=0;
01420    long nextbatchtime=0;
01421 
01422    switch (cmd) {
01423    case CLI_INIT:
01424       e->command = "cdr show status";
01425       e->usage =
01426          "Usage: cdr show status\n"
01427          "  Displays the Call Detail Record engine system status.\n";
01428       return NULL;
01429    case CLI_GENERATE:
01430       return NULL;
01431    }
01432 
01433    if (a->argc > 3)
01434       return CLI_SHOWUSAGE;
01435 
01436    ast_cli(a->fd, "\n");
01437    ast_cli(a->fd, "Call Detail Record (CDR) settings\n");
01438    ast_cli(a->fd, "----------------------------------\n");
01439    ast_cli(a->fd, "  Logging:                    %s\n", enabled ? "Enabled" : "Disabled");
01440    ast_cli(a->fd, "  Mode:                       %s\n", batchmode ? "Batch" : "Simple");
01441    if (enabled) {
01442       ast_cli(a->fd, "  Log unanswered calls:       %s\n\n", unanswered ? "Yes" : "No");
01443       if (batchmode) {
01444          ast_cli(a->fd, "* Batch Mode Settings\n");
01445          ast_cli(a->fd, "  -------------------\n");
01446          if (batch)
01447             cnt = batch->size;
01448          if (cdr_sched > -1)
01449             nextbatchtime = ast_sched_when(sched, cdr_sched);
01450          ast_cli(a->fd, "  Safe shutdown:              %s\n", batchsafeshutdown ? "Enabled" : "Disabled");
01451          ast_cli(a->fd, "  Threading model:            %s\n", batchscheduleronly ? "Scheduler only" : "Scheduler plus separate threads");
01452          ast_cli(a->fd, "  Current batch size:         %d record%s\n", cnt, ESS(cnt));
01453          ast_cli(a->fd, "  Maximum batch size:         %d record%s\n", batchsize, ESS(batchsize));
01454          ast_cli(a->fd, "  Maximum batch time:         %d second%s\n", batchtime, ESS(batchtime));
01455          ast_cli(a->fd, "  Next batch processing time: %ld second%s\n\n", nextbatchtime, ESS(nextbatchtime));
01456       }
01457       ast_cli(a->fd, "* Registered Backends\n");
01458       ast_cli(a->fd, "  -------------------\n");
01459       AST_RWLIST_RDLOCK(&be_list);
01460       if (AST_RWLIST_EMPTY(&be_list)) {
01461          ast_cli(a->fd, "    (none)\n");
01462       } else {
01463          AST_RWLIST_TRAVERSE(&be_list, beitem, list) {
01464             ast_cli(a->fd, "    %s\n", beitem->name);
01465          }
01466       }
01467       AST_RWLIST_UNLOCK(&be_list);
01468       ast_cli(a->fd, "\n");
01469    }
01470 
01471    return CLI_SUCCESS;
01472 }
01473 
01474 static char *handle_cli_submit(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
01475 {
01476    switch (cmd) {
01477    case CLI_INIT:
01478       e->command = "cdr submit";
01479       e->usage =
01480          "Usage: cdr submit\n"
01481          "       Posts all pending batched CDR data to the configured CDR backend engine modules.\n";
01482       return NULL;
01483    case CLI_GENERATE:
01484       return NULL;
01485    }
01486    if (a->argc > 2)
01487       return CLI_SHOWUSAGE;
01488 
01489    submit_unscheduled_batch();
01490    ast_cli(a->fd, "Submitted CDRs to backend engines for processing.  This may take a while.\n");
01491 
01492    return CLI_SUCCESS;
01493 }
01494 
01495 static struct ast_cli_entry cli_submit = AST_CLI_DEFINE(handle_cli_submit, "Posts all pending batched CDR data");
01496 static struct ast_cli_entry cli_status = AST_CLI_DEFINE(handle_cli_status, "Display the CDR status");
01497 
01498 static void do_reload(int reload)
01499 {
01500    struct ast_config *config;
01501    const char *enabled_value;
01502    const char *unanswered_value;
01503    const char *batched_value;
01504    const char *scheduleronly_value;
01505    const char *batchsafeshutdown_value;
01506    const char *size_value;
01507    const char *time_value;
01508    const char *end_before_h_value;
01509    const char *initiatedseconds_value;
01510    int cfg_size;
01511    int cfg_time;
01512    int was_enabled;
01513    int was_batchmode;
01514    struct ast_flags config_flags = { reload ? CONFIG_FLAG_FILEUNCHANGED : 0 };
01515 
01516    if ((config = ast_config_load2("cdr.conf", "cdr", config_flags)) == CONFIG_STATUS_FILEUNCHANGED) {
01517       return;
01518    }
01519 
01520    ast_mutex_lock(&cdr_batch_lock);
01521 
01522    was_enabled = enabled;
01523    was_batchmode = batchmode;
01524 
01525    batchsize = BATCH_SIZE_DEFAULT;
01526    batchtime = BATCH_TIME_DEFAULT;
01527    batchscheduleronly = BATCH_SCHEDULER_ONLY_DEFAULT;
01528    batchsafeshutdown = BATCH_SAFE_SHUTDOWN_DEFAULT;
01529    enabled = ENABLED_DEFAULT;
01530    batchmode = BATCHMODE_DEFAULT;
01531    unanswered = UNANSWERED_DEFAULT;
01532 
01533    if (config == CONFIG_STATUS_FILEMISSING || config == CONFIG_STATUS_FILEINVALID) {
01534       ast_mutex_unlock(&cdr_batch_lock);
01535       return;
01536    }
01537 
01538    /* don't run the next scheduled CDR posting while reloading */
01539    ast_mutex_lock(&cdr_sched_lock);
01540    AST_SCHED_DEL(sched, cdr_sched);
01541    ast_mutex_unlock(&cdr_sched_lock);
01542 
01543    if (config) {
01544       if ((enabled_value = ast_variable_retrieve(config, "general", "enable"))) {
01545          enabled = ast_true(enabled_value);
01546       }
01547       if ((unanswered_value = ast_variable_retrieve(config, "general", "unanswered"))) {
01548          unanswered = ast_true(unanswered_value);
01549       }
01550       if ((batched_value = ast_variable_retrieve(config, "general", "batch"))) {
01551          batchmode = ast_true(batched_value);
01552       }
01553       if ((scheduleronly_value = ast_variable_retrieve(config, "general", "scheduleronly"))) {
01554          batchscheduleronly = ast_true(scheduleronly_value);
01555       }
01556       if ((batchsafeshutdown_value = ast_variable_retrieve(config, "general", "safeshutdown"))) {
01557          batchsafeshutdown = ast_true(batchsafeshutdown_value);
01558       }
01559       if ((size_value = ast_variable_retrieve(config, "general", "size"))) {
01560          if (sscanf(size_value, "%30d", &cfg_size) < 1)
01561             ast_log(LOG_WARNING, "Unable to convert '%s' to a numeric value.\n", size_value);
01562          else if (cfg_size < 0)
01563             ast_log(LOG_WARNING, "Invalid maximum batch size '%d' specified, using default\n", cfg_size);
01564          else
01565             batchsize = cfg_size;
01566       }
01567       if ((time_value = ast_variable_retrieve(config, "general", "time"))) {
01568          if (sscanf(time_value, "%30d", &cfg_time) < 1)
01569             ast_log(LOG_WARNING, "Unable to convert '%s' to a numeric value.\n", time_value);
01570          else if (cfg_time < 0)
01571             ast_log(LOG_WARNING, "Invalid maximum batch time '%d' specified, using default\n", cfg_time);
01572          else
01573             batchtime = cfg_time;
01574       }
01575       if ((end_before_h_value = ast_variable_retrieve(config, "general", "endbeforehexten")))
01576          ast_set2_flag(&ast_options, ast_true(end_before_h_value), AST_OPT_FLAG_END_CDR_BEFORE_H_EXTEN);
01577       if ((initiatedseconds_value = ast_variable_retrieve(config, "general", "initiatedseconds")))
01578          ast_set2_flag(&ast_options, ast_true(initiatedseconds_value), AST_OPT_FLAG_INITIATED_SECONDS);
01579    }
01580 
01581    if (enabled && !batchmode) {
01582       ast_log(LOG_NOTICE, "CDR simple logging enabled.\n");
01583    } else if (enabled && batchmode) {
01584       ast_mutex_lock(&cdr_sched_lock);
01585       cdr_sched = ast_sched_add(sched, batchtime * 1000, submit_scheduled_batch, NULL);
01586       ast_mutex_unlock(&cdr_sched_lock);
01587       ast_log(LOG_NOTICE, "CDR batch mode logging enabled, first of either size %d or time %d seconds.\n", batchsize, batchtime);
01588    } else {
01589       ast_log(LOG_NOTICE, "CDR logging disabled, data will be lost.\n");
01590    }
01591 
01592    /* if this reload enabled the CDR batch mode, create the background thread
01593       if it does not exist */
01594    if (enabled && batchmode && (!was_enabled || !was_batchmode) && (cdr_thread == AST_PTHREADT_NULL)) {
01595       ast_cond_init(&cdr_pending_cond, NULL);
01596       if (ast_pthread_create_background(&cdr_thread, NULL, do_cdr, NULL) < 0) {
01597          ast_log(LOG_ERROR, "Unable to start CDR thread.\n");
01598          ast_mutex_lock(&cdr_sched_lock);
01599          AST_SCHED_DEL(sched, cdr_sched);
01600          ast_mutex_unlock(&cdr_sched_lock);
01601       } else {
01602          ast_cli_register(&cli_submit);
01603          ast_register_atexit(ast_cdr_engine_term);
01604       }
01605    /* if this reload disabled the CDR and/or batch mode and there is a background thread,
01606       kill it */
01607    } else if (((!enabled && was_enabled) || (!batchmode && was_batchmode)) && (cdr_thread != AST_PTHREADT_NULL)) {
01608       /* wake up the thread so it will exit */
01609       pthread_cancel(cdr_thread);
01610       pthread_kill(cdr_thread, SIGURG);
01611       pthread_join(cdr_thread, NULL);
01612       cdr_thread = AST_PTHREADT_NULL;
01613       ast_cond_destroy(&cdr_pending_cond);
01614       ast_cli_unregister(&cli_submit);
01615       ast_unregister_atexit(ast_cdr_engine_term);
01616       /* if leaving batch mode, then post the CDRs in the batch,
01617          and don't reschedule, since we are stopping CDR logging */
01618       if (!batchmode && was_batchmode) {
01619          ast_cdr_engine_term();
01620       }
01621    }
01622 
01623    ast_mutex_unlock(&cdr_batch_lock);
01624    ast_config_destroy(config);
01625    manager_event(EVENT_FLAG_SYSTEM, "Reload", "Module: CDR\r\nMessage: CDR subsystem reload requested\r\n");
01626 }
01627 
01628 static void cdr_engine_shutdown(void)
01629 {
01630    if (cdr_thread != AST_PTHREADT_NULL) {
01631       /* wake up the thread so it will exit */
01632       pthread_cancel(cdr_thread);
01633       pthread_kill(cdr_thread, SIGURG);
01634       pthread_join(cdr_thread, NULL);
01635       cdr_thread = AST_PTHREADT_NULL;
01636       ast_cond_destroy(&cdr_pending_cond);
01637    }
01638    ast_cli_unregister(&cli_submit);
01639 
01640    ast_cli_unregister(&cli_status);
01641    sched_context_destroy(sched);
01642    sched = NULL;
01643    ast_free(batch);
01644    batch = NULL;
01645 }
01646 
01647 int ast_cdr_engine_init(void)
01648 {
01649    sched = sched_context_create();
01650    if (!sched) {
01651       ast_log(LOG_ERROR, "Unable to create schedule context.\n");
01652       return -1;
01653    }
01654 
01655    ast_cli_register(&cli_status);
01656    do_reload(0);
01657    ast_register_atexit(cdr_engine_shutdown);
01658 
01659    return 0;
01660 }
01661 
01662 /* \note This actually gets called a couple of times at shutdown.  Once, before we start
01663    hanging up channels, and then again, after the channel hangup timeout expires */
01664 void ast_cdr_engine_term(void)
01665 {
01666    ast_cdr_submit_batch(batchsafeshutdown);
01667 }
01668 
01669 int ast_cdr_engine_reload(void)
01670 {
01671    do_reload(1);
01672    return 0;
01673 }
01674 
01675 int ast_cdr_data_add_structure(struct ast_data *tree, struct ast_cdr *cdr, int recur)
01676 {
01677    struct ast_cdr *tmpcdr;
01678    struct ast_data *level;
01679    struct ast_var_t *variables;
01680    const char *var, *val;
01681    int x = 1, i;
01682    char workspace[256];
01683    char *tmp;
01684 
01685    if (!cdr) {
01686       return -1;
01687    }
01688 
01689    for (tmpcdr = cdr; tmpcdr; tmpcdr = (recur ? tmpcdr->next : NULL)) {
01690       level = ast_data_add_node(tree, "level");
01691       if (!level) {
01692          continue;
01693       }
01694 
01695       ast_data_add_int(level, "level_number", x);
01696 
01697       AST_LIST_TRAVERSE(&tmpcdr->varshead, variables, entries) {
01698          if (variables && (var = ast_var_name(variables)) &&
01699                (val = ast_var_value(variables)) && !ast_strlen_zero(var)
01700                && !ast_strlen_zero(val)) {
01701             ast_data_add_str(level, var, val);
01702          } else {
01703             break;
01704          }
01705       }
01706 
01707       for (i = 0; cdr_readonly_vars[i]; i++) {
01708          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 */
01709          ast_cdr_getvar(tmpcdr, cdr_readonly_vars[i], &tmp, workspace, sizeof(workspace), 0, 0);
01710          if (!tmp) {
01711             continue;
01712          }
01713          ast_data_add_str(level, cdr_readonly_vars[i], tmp);
01714       }
01715 
01716       x++;
01717    }
01718 
01719    return 0;
01720 }
01721 

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