Fri Aug 24 02:22:11 2007

Asterisk developer's documentation


cdr.c

Go to the documentation of this file.
00001 /*
00002  * Asterisk -- An open source telephony toolkit.
00003  *
00004  * Copyright (C) 1999 - 2006, Digium, Inc.
00005  *
00006  * Mark Spencer <markster@digium.com>
00007  *
00008  * See http://www.asterisk.org for more information about
00009  * the Asterisk project. Please do not directly contact
00010  * any of the maintainers of this project for assistance;
00011  * the project provides a web site, mailing lists and IRC
00012  * channels for your use.
00013  *
00014  * This program is free software, distributed under the terms of
00015  * the GNU General Public License Version 2. See the LICENSE file
00016  * at the top of the source tree.
00017  */
00018 
00019 /*! \file
00020  *
00021  * \brief Call Detail Record API 
00022  *
00023  * \author Mark Spencer <markster@digium.com>
00024  * 
00025  * \note Includes code and algorithms from the Zapata library.
00026  *
00027  * \note We do a lot of checking here in the CDR code to try to be sure we don't ever let a CDR slip
00028  * through our fingers somehow.  If someone allocates a CDR, it must be completely handled normally
00029  * or a WARNING shall be logged, so that we can best keep track of any escape condition where the CDR
00030  * isn't properly generated and posted.
00031  */
00032 
00033 
00034 #include "asterisk.h"
00035 
00036 ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
00037 
00038 #include <unistd.h>
00039 #include <stdlib.h>
00040 #include <string.h>
00041 #include <stdio.h>
00042 #include <signal.h>
00043 
00044 #include "asterisk/lock.h"
00045 #include "asterisk/channel.h"
00046 #include "asterisk/cdr.h"
00047 #include "asterisk/logger.h"
00048 #include "asterisk/callerid.h"
00049 #include "asterisk/causes.h"
00050 #include "asterisk/options.h"
00051 #include "asterisk/linkedlists.h"
00052 #include "asterisk/utils.h"
00053 #include "asterisk/sched.h"
00054 #include "asterisk/config.h"
00055 #include "asterisk/cli.h"
00056 #include "asterisk/stringfields.h"
00057 
00058 /*! Default AMA flag for billing records (CDR's) */
00059 int ast_default_amaflags = AST_CDR_DOCUMENTATION;
00060 char ast_default_accountcode[AST_MAX_ACCOUNT_CODE];
00061 
00062 struct ast_cdr_beitem {
00063    char name[20];
00064    char desc[80];
00065    ast_cdrbe be;
00066    AST_LIST_ENTRY(ast_cdr_beitem) list;
00067 };
00068 
00069 static AST_LIST_HEAD_STATIC(be_list, ast_cdr_beitem);
00070 
00071 struct ast_cdr_batch_item {
00072    struct ast_cdr *cdr;
00073    struct ast_cdr_batch_item *next;
00074 };
00075 
00076 static struct ast_cdr_batch {
00077    int size;
00078    struct ast_cdr_batch_item *head;
00079    struct ast_cdr_batch_item *tail;
00080 } *batch = NULL;
00081 
00082 static struct sched_context *sched;
00083 static int cdr_sched = -1;
00084 static pthread_t cdr_thread = AST_PTHREADT_NULL;
00085 
00086 #define BATCH_SIZE_DEFAULT 100
00087 #define BATCH_TIME_DEFAULT 300
00088 #define BATCH_SCHEDULER_ONLY_DEFAULT 0
00089 #define BATCH_SAFE_SHUTDOWN_DEFAULT 1
00090 
00091 static int enabled;     /*! Is the CDR subsystem enabled ? */
00092 static int batchmode;
00093 static int batchsize;
00094 static int batchtime;
00095 static int batchscheduleronly;
00096 static int batchsafeshutdown;
00097 
00098 AST_MUTEX_DEFINE_STATIC(cdr_batch_lock);
00099 
00100 /* these are used to wake up the CDR thread when there's work to do */
00101 AST_MUTEX_DEFINE_STATIC(cdr_pending_lock);
00102 static ast_cond_t cdr_pending_cond;
00103 
00104 
00105 /*! Register a CDR driver. Each registered CDR driver generates a CDR 
00106    \return 0 on success, -1 on failure 
00107 */
00108 int ast_cdr_register(const char *name, const char *desc, ast_cdrbe be)
00109 {
00110    struct ast_cdr_beitem *i;
00111 
00112    if (!name)
00113       return -1;
00114    if (!be) {
00115       ast_log(LOG_WARNING, "CDR engine '%s' lacks backend\n", name);
00116       return -1;
00117    }
00118 
00119    AST_LIST_LOCK(&be_list);
00120    AST_LIST_TRAVERSE(&be_list, i, list) {
00121       if (!strcasecmp(name, i->name))
00122          break;
00123    }
00124    AST_LIST_UNLOCK(&be_list);
00125 
00126    if (i) {
00127       ast_log(LOG_WARNING, "Already have a CDR backend called '%s'\n", name);
00128       return -1;
00129    }
00130 
00131    if (!(i = ast_calloc(1, sizeof(*i))))  
00132       return -1;
00133 
00134    i->be = be;
00135    ast_copy_string(i->name, name, sizeof(i->name));
00136    ast_copy_string(i->desc, desc, sizeof(i->desc));
00137 
00138    AST_LIST_LOCK(&be_list);
00139    AST_LIST_INSERT_HEAD(&be_list, i, list);
00140    AST_LIST_UNLOCK(&be_list);
00141 
00142    return 0;
00143 }
00144 
00145 /*! unregister a CDR driver */
00146 void ast_cdr_unregister(const char *name)
00147 {
00148    struct ast_cdr_beitem *i = NULL;
00149 
00150    AST_LIST_LOCK(&be_list);
00151    AST_LIST_TRAVERSE_SAFE_BEGIN(&be_list, i, list) {
00152       if (!strcasecmp(name, i->name)) {
00153          AST_LIST_REMOVE_CURRENT(&be_list, list);
00154          if (option_verbose > 1)
00155             ast_verbose(VERBOSE_PREFIX_2 "Unregistered '%s' CDR backend\n", name);
00156          free(i);
00157          break;
00158       }
00159    }
00160    AST_LIST_TRAVERSE_SAFE_END;
00161    AST_LIST_UNLOCK(&be_list);
00162 }
00163 
00164 /*! Duplicate a CDR record 
00165    \returns Pointer to new CDR record
00166 */
00167 struct ast_cdr *ast_cdr_dup(struct ast_cdr *cdr) 
00168 {
00169    struct ast_cdr *newcdr;
00170    
00171    if (!cdr) /* don't die if we get a null cdr pointer */
00172       return NULL;
00173    newcdr = ast_cdr_alloc();
00174    if (!newcdr)
00175       return NULL;
00176 
00177    memcpy(newcdr, cdr, sizeof(*newcdr));
00178    /* The varshead is unusable, volatile even, after the memcpy so we take care of that here */
00179    memset(&newcdr->varshead, 0, sizeof(newcdr->varshead));
00180    ast_cdr_copy_vars(newcdr, cdr);
00181    newcdr->next = NULL;
00182 
00183    return newcdr;
00184 }
00185 
00186 static const char *ast_cdr_getvar_internal(struct ast_cdr *cdr, const char *name, int recur) 
00187 {
00188    if (ast_strlen_zero(name))
00189       return NULL;
00190 
00191    for (; cdr; cdr = recur ? cdr->next : NULL) {
00192       struct ast_var_t *variables;
00193       struct varshead *headp = &cdr->varshead;
00194       AST_LIST_TRAVERSE(headp, variables, entries) {
00195          if (!strcasecmp(name, ast_var_name(variables)))
00196             return ast_var_value(variables);
00197       }
00198    }
00199 
00200    return NULL;
00201 }
00202 
00203 static void cdr_get_tv(struct timeval tv, const char *fmt, char *buf, int bufsize)
00204 {
00205    if (fmt == NULL) {   /* raw mode */
00206       snprintf(buf, bufsize, "%ld.%06ld", (long)tv.tv_sec, (long)tv.tv_usec);
00207    } else {  
00208       time_t t = tv.tv_sec;
00209       if (t) {
00210          struct tm tm;
00211 
00212          ast_localtime(&t, &tm, NULL);
00213          strftime(buf, bufsize, fmt, &tm);
00214       }
00215    }
00216 }
00217 
00218 /*! CDR channel variable retrieval */
00219 void ast_cdr_getvar(struct ast_cdr *cdr, const char *name, char **ret, char *workspace, int workspacelen, int recur, int raw) 
00220 {
00221    const char *fmt = "%Y-%m-%d %T";
00222    const char *varbuf;
00223 
00224    if (!cdr)  /* don't die if the cdr is null */
00225       return;
00226 
00227    *ret = NULL;
00228    /* special vars (the ones from the struct ast_cdr when requested by name) 
00229       I'd almost say we should convert all the stringed vals to vars */
00230 
00231    if (!strcasecmp(name, "clid"))
00232       ast_copy_string(workspace, cdr->clid, workspacelen);
00233    else if (!strcasecmp(name, "src"))
00234       ast_copy_string(workspace, cdr->src, workspacelen);
00235    else if (!strcasecmp(name, "dst"))
00236       ast_copy_string(workspace, cdr->dst, workspacelen);
00237    else if (!strcasecmp(name, "dcontext"))
00238       ast_copy_string(workspace, cdr->dcontext, workspacelen);
00239    else if (!strcasecmp(name, "channel"))
00240       ast_copy_string(workspace, cdr->channel, workspacelen);
00241    else if (!strcasecmp(name, "dstchannel"))
00242       ast_copy_string(workspace, cdr->dstchannel, workspacelen);
00243    else if (!strcasecmp(name, "lastapp"))
00244       ast_copy_string(workspace, cdr->lastapp, workspacelen);
00245    else if (!strcasecmp(name, "lastdata"))
00246       ast_copy_string(workspace, cdr->lastdata, workspacelen);
00247    else if (!strcasecmp(name, "start"))
00248       cdr_get_tv(cdr->start, raw ? NULL : fmt, workspace, workspacelen);
00249    else if (!strcasecmp(name, "answer"))
00250       cdr_get_tv(cdr->answer, raw ? NULL : fmt, workspace, workspacelen);
00251    else if (!strcasecmp(name, "end"))
00252       cdr_get_tv(cdr->end, raw ? NULL : fmt, workspace, workspacelen);
00253    else if (!strcasecmp(name, "duration"))
00254       snprintf(workspace, workspacelen, "%ld", cdr->duration);
00255    else if (!strcasecmp(name, "billsec"))
00256       snprintf(workspace, workspacelen, "%ld", cdr->billsec);
00257    else if (!strcasecmp(name, "disposition")) {
00258       if (raw) {
00259          snprintf(workspace, workspacelen, "%ld", cdr->disposition);
00260       } else {
00261          ast_copy_string(workspace, ast_cdr_disp2str(cdr->disposition), workspacelen);
00262       }
00263    } else if (!strcasecmp(name, "amaflags")) {
00264       if (raw) {
00265          snprintf(workspace, workspacelen, "%ld", cdr->amaflags);
00266       } else {
00267          ast_copy_string(workspace, ast_cdr_flags2str(cdr->amaflags), workspacelen);
00268       }
00269    } else if (!strcasecmp(name, "accountcode"))
00270       ast_copy_string(workspace, cdr->accountcode, workspacelen);
00271    else if (!strcasecmp(name, "uniqueid"))
00272       ast_copy_string(workspace, cdr->uniqueid, workspacelen);
00273    else if (!strcasecmp(name, "userfield"))
00274       ast_copy_string(workspace, cdr->userfield, workspacelen);
00275    else if ((varbuf = ast_cdr_getvar_internal(cdr, name, recur)))
00276       ast_copy_string(workspace, varbuf, workspacelen);
00277    else
00278       workspace[0] = '\0';
00279 
00280    if (!ast_strlen_zero(workspace))
00281       *ret = workspace;
00282 }
00283 
00284 /* readonly cdr variables */
00285 static   const char *cdr_readonly_vars[] = { "clid", "src", "dst", "dcontext", "channel", "dstchannel",
00286                 "lastapp", "lastdata", "start", "answer", "end", "duration",
00287                 "billsec", "disposition", "amaflags", "accountcode", "uniqueid",
00288                 "userfield", NULL };
00289 /*! Set a CDR channel variable 
00290    \note You can't set the CDR variables that belong to the actual CDR record, like "billsec".
00291 */
00292 int ast_cdr_setvar(struct ast_cdr *cdr, const char *name, const char *value, int recur) 
00293 {
00294    struct ast_var_t *newvariable;
00295    struct varshead *headp;
00296    int x;
00297    
00298    if (!cdr)  /* don't die if the cdr is null */
00299       return -1;
00300    
00301    for(x = 0; cdr_readonly_vars[x]; x++) {
00302       if (!strcasecmp(name, cdr_readonly_vars[x])) {
00303          ast_log(LOG_ERROR, "Attempt to set the '%s' read-only variable!.\n", name);
00304          return -1;
00305       }
00306    }
00307 
00308    if (!cdr) {
00309       ast_log(LOG_ERROR, "Attempt to set a variable on a nonexistent CDR record.\n");
00310       return -1;
00311    }
00312 
00313    for (; cdr; cdr = recur ? cdr->next : NULL) {
00314       headp = &cdr->varshead;
00315       AST_LIST_TRAVERSE_SAFE_BEGIN(headp, newvariable, entries) {
00316          if (!strcasecmp(ast_var_name(newvariable), name)) {
00317             /* there is already such a variable, delete it */
00318             AST_LIST_REMOVE_CURRENT(headp, entries);
00319             ast_var_delete(newvariable);
00320             break;
00321          }
00322       }
00323       AST_LIST_TRAVERSE_SAFE_END;
00324 
00325       if (value) {
00326          newvariable = ast_var_assign(name, value);
00327          AST_LIST_INSERT_HEAD(headp, newvariable, entries);
00328       }
00329    }
00330 
00331    return 0;
00332 }
00333 
00334 int ast_cdr_copy_vars(struct ast_cdr *to_cdr, struct ast_cdr *from_cdr)
00335 {
00336    struct ast_var_t *variables, *newvariable = NULL;
00337    struct varshead *headpa, *headpb;
00338    const char *var, *val;
00339    int x = 0;
00340 
00341    if (!to_cdr || !from_cdr) /* don't die if one of the pointers is null */
00342       return 0;
00343 
00344    headpa = &from_cdr->varshead;
00345    headpb = &to_cdr->varshead;
00346 
00347    AST_LIST_TRAVERSE(headpa,variables,entries) {
00348       if (variables &&
00349           (var = ast_var_name(variables)) && (val = ast_var_value(variables)) &&
00350           !ast_strlen_zero(var) && !ast_strlen_zero(val)) {
00351          newvariable = ast_var_assign(var, val);
00352          AST_LIST_INSERT_HEAD(headpb, newvariable, entries);
00353          x++;
00354       }
00355    }
00356 
00357    return x;
00358 }
00359 
00360 int ast_cdr_serialize_variables(struct ast_cdr *cdr, char *buf, size_t size, char delim, char sep, int recur) 
00361 {
00362    struct ast_var_t *variables;
00363    const char *var, *val;
00364    char *tmp;
00365    char workspace[256];
00366    int total = 0, x = 0, i;
00367 
00368    memset(buf, 0, size);
00369 
00370    for (; cdr; cdr = recur ? cdr->next : NULL) {
00371       if (++x > 1)
00372          ast_build_string(&buf, &size, "\n");
00373 
00374       AST_LIST_TRAVERSE(&cdr->varshead, variables, entries) {
00375          if (variables &&
00376              (var = ast_var_name(variables)) && (val = ast_var_value(variables)) &&
00377              !ast_strlen_zero(var) && !ast_strlen_zero(val)) {
00378             if (ast_build_string(&buf, &size, "level %d: %s%c%s%c", x, var, delim, val, sep)) {
00379                ast_log(LOG_ERROR, "Data Buffer Size Exceeded!\n");
00380                break;
00381             } else
00382                total++;
00383          } else 
00384             break;
00385       }
00386 
00387       for (i = 0; cdr_readonly_vars[i]; i++) {
00388          ast_cdr_getvar(cdr, cdr_readonly_vars[i], &tmp, workspace, sizeof(workspace), 0, 0);
00389          if (!tmp)
00390             continue;
00391          
00392          if (ast_build_string(&buf, &size, "level %d: %s%c%s%c", x, cdr_readonly_vars[i], delim, tmp, sep)) {
00393             ast_log(LOG_ERROR, "Data Buffer Size Exceeded!\n");
00394             break;
00395          } else
00396             total++;
00397       }
00398    }
00399 
00400    return total;
00401 }
00402 
00403 
00404 void ast_cdr_free_vars(struct ast_cdr *cdr, int recur)
00405 {
00406 
00407    /* clear variables */
00408    for (; cdr; cdr = recur ? cdr->next : NULL) {
00409       struct ast_var_t *vardata;
00410       struct varshead *headp = &cdr->varshead;
00411       while ((vardata = AST_LIST_REMOVE_HEAD(headp, entries)))
00412          ast_var_delete(vardata);
00413    }
00414 }
00415 
00416 /*! \brief  print a warning if cdr already posted */
00417 static void check_post(struct ast_cdr *cdr)
00418 {
00419    if (!cdr)
00420       return;
00421    if (ast_test_flag(cdr, AST_CDR_FLAG_POSTED))
00422       ast_log(LOG_NOTICE, "CDR on channel '%s' already posted\n", S_OR(cdr->channel, "<unknown>"));
00423 }
00424 
00425 void ast_cdr_free(struct ast_cdr *cdr)
00426 {
00427 
00428    while (cdr) {
00429       struct ast_cdr *next = cdr->next;
00430       char *chan = S_OR(cdr->channel, "<unknown>");
00431       if (!ast_test_flag(cdr, AST_CDR_FLAG_POSTED) && !ast_test_flag(cdr, AST_CDR_FLAG_POST_DISABLED))
00432          ast_log(LOG_NOTICE, "CDR on channel '%s' not posted\n", chan);
00433       if (ast_tvzero(cdr->end))
00434          ast_log(LOG_NOTICE, "CDR on channel '%s' lacks end\n", chan);
00435       if (ast_tvzero(cdr->start))
00436          ast_log(LOG_NOTICE, "CDR on channel '%s' lacks start\n", chan);
00437 
00438       ast_cdr_free_vars(cdr, 0);
00439       free(cdr);
00440       cdr = next;
00441    }
00442 }
00443 
00444 /*! \brief the same as a cdr_free call, only with no checks; just get rid of it */
00445 void ast_cdr_discard(struct ast_cdr *cdr)
00446 {
00447    while (cdr) {
00448       struct ast_cdr *next = cdr->next;
00449 
00450       ast_cdr_free_vars(cdr, 0);
00451       free(cdr);
00452       cdr = next;
00453    }
00454 }
00455 
00456 struct ast_cdr *ast_cdr_alloc(void)
00457 {
00458    struct ast_cdr *x = ast_calloc(1, sizeof(struct ast_cdr));
00459    if (!x)
00460       ast_log(LOG_ERROR,"Allocation Failure for a CDR!\n");
00461    return x;
00462 }
00463 
00464 static void cdr_merge_vars(struct ast_cdr *to, struct ast_cdr *from)
00465 {
00466    struct ast_var_t *variablesfrom,*variablesto;
00467    struct varshead *headpfrom = &to->varshead;
00468    struct varshead *headpto = &from->varshead;
00469    AST_LIST_TRAVERSE_SAFE_BEGIN(headpfrom, variablesfrom, entries) {
00470       /* for every var in from, stick it in to */
00471       const char *fromvarname = NULL, *fromvarval = NULL;
00472       const char *tovarname = NULL, *tovarval = NULL;
00473       fromvarname = ast_var_name(variablesfrom);
00474       fromvarval = ast_var_value(variablesfrom);
00475       tovarname = 0;
00476 
00477       /* now, quick see if that var is in the 'to' cdr already */
00478       AST_LIST_TRAVERSE(headpto, variablesto, entries) {
00479 
00480          /* now, quick see if that var is in the 'to' cdr already */
00481          if ( strcasecmp(fromvarname, ast_var_name(variablesto)) == 0 ) {
00482             tovarname = ast_var_name(variablesto);
00483             tovarval = ast_var_value(variablesto);
00484             break;
00485          }
00486       }
00487       if (tovarname && strcasecmp(fromvarval,tovarval) != 0) {  /* this message here to see how irritating the userbase finds it */
00488          ast_log(LOG_NOTICE, "Merging CDR's: variable %s value %s dropped in favor of value %s\n", tovarname, fromvarval, tovarval);
00489          continue;
00490       } else if (tovarname && strcasecmp(fromvarval,tovarval) == 0) /* if they are the same, the job is done */
00491          continue;
00492 
00493       /*rip this var out of the from cdr, and stick it in the to cdr */
00494       AST_LIST_REMOVE_CURRENT(headpfrom, entries);
00495       AST_LIST_INSERT_HEAD(headpto, variablesfrom, entries);
00496    }
00497    AST_LIST_TRAVERSE_SAFE_END;
00498 }
00499 
00500 void ast_cdr_merge(struct ast_cdr *to, struct ast_cdr *from)
00501 {
00502    struct ast_cdr *zcdr;
00503    struct ast_cdr *lto = NULL;
00504    struct ast_cdr *lfrom = NULL;
00505    int discard_from = 0;
00506    
00507    if (!to || !from)
00508       return;
00509 
00510    /* don't merge into locked CDR's -- it's bad business */
00511    if (ast_test_flag(to, AST_CDR_FLAG_LOCKED)) {
00512       zcdr = to; /* safety valve? */
00513       while (to->next) {
00514          lto = to;
00515          to = to->next;
00516       }
00517       
00518       if (ast_test_flag(to, AST_CDR_FLAG_LOCKED)) {
00519          ast_log(LOG_WARNING, "Merging into locked CDR... no choice.");
00520          to = zcdr; /* safety-- if all there are is locked CDR's, then.... ?? */
00521          lto = NULL;
00522       }
00523    }
00524 
00525    if (ast_test_flag(from, AST_CDR_FLAG_LOCKED)) {
00526       discard_from = 1;
00527       if (lto) {
00528          struct ast_cdr *llfrom = NULL;
00529          /* insert the from stuff after lto */
00530          lto->next = from;
00531          lfrom = from;
00532          while (lfrom && lfrom->next) {
00533             if (!lfrom->next->next)
00534                llfrom = lfrom;
00535             lfrom = lfrom->next; 
00536          }
00537          /* rip off the last entry and put a copy of the to at the end */
00538          llfrom->next = to;
00539          from = lfrom;
00540       } else {
00541          /* save copy of the current *to cdr */
00542          struct ast_cdr tcdr;
00543          struct ast_cdr *llfrom = NULL;
00544          memcpy(&tcdr, to, sizeof(tcdr));
00545          /* copy in the locked from cdr */
00546          memcpy(to, from, sizeof(*to));
00547          lfrom = from;
00548          while (lfrom && lfrom->next) {
00549             if (!lfrom->next->next)
00550                llfrom = lfrom;
00551             lfrom = lfrom->next; 
00552          }
00553          from->next = NULL;
00554          /* rip off the last entry and put a copy of the to at the end */
00555          if (llfrom == from)
00556             to = to->next = ast_cdr_dup(&tcdr);
00557          else
00558             to = llfrom->next = ast_cdr_dup(&tcdr);
00559          from = lfrom;
00560       }
00561    }
00562    
00563    if (!ast_tvzero(from->start)) {
00564       if (!ast_tvzero(to->start)) {
00565          if (ast_tvcmp(to->start, from->start) > 0 ) {
00566             to->start = from->start; /* use the earliest time */
00567             from->start = ast_tv(0,0); /* we actively "steal" these values */
00568          }
00569          /* else nothing to do */
00570       } else {
00571          to->start = from->start;
00572          from->start = ast_tv(0,0); /* we actively "steal" these values */
00573       }
00574    }
00575    if (!ast_tvzero(from->answer)) {
00576       if (!ast_tvzero(to->answer)) {
00577          if (ast_tvcmp(to->answer, from->answer) > 0 ) {
00578             to->answer = from->answer; /* use the earliest time */
00579             from->answer = ast_tv(0,0); /* we actively "steal" these values */
00580          }
00581          /* we got the earliest answer time, so we'll settle for that? */
00582       } else {
00583          to->answer = from->answer;
00584          from->answer = ast_tv(0,0); /* we actively "steal" these values */
00585       }
00586    }
00587    if (!ast_tvzero(from->end)) {
00588       if (!ast_tvzero(to->end)) {
00589          if (ast_tvcmp(to->end, from->end) < 0 ) {
00590             to->end = from->end; /* use the latest time */
00591             from->end = ast_tv(0,0); /* we actively "steal" these values */
00592             to->duration = to->end.tv_sec - to->start.tv_sec;  /* don't forget to update the duration, billsec, when we set end */
00593             to->billsec = ast_tvzero(to->answer) ? 0 : to->end.tv_sec - to->answer.tv_sec;
00594          }
00595          /* else, nothing to do */
00596       } else {
00597          to->end = from->end;
00598          from->end = ast_tv(0,0); /* we actively "steal" these values */
00599          to->duration = to->end.tv_sec - to->start.tv_sec;
00600          to->billsec = ast_tvzero(to->answer) ? 0 : to->end.tv_sec - to->answer.tv_sec;
00601       }
00602    }
00603    if (to->disposition < from->disposition) {
00604       to->disposition = from->disposition;
00605       from->disposition = AST_CDR_NOANSWER;
00606    }
00607    if (ast_strlen_zero(to->lastapp) && !ast_strlen_zero(from->lastapp)) {
00608       ast_copy_string(to->lastapp, from->lastapp, sizeof(to->lastapp));
00609       from->lastapp[0] = 0; /* theft */
00610    }
00611    if (ast_strlen_zero(to->lastdata) && !ast_strlen_zero(from->lastdata)) {
00612       ast_copy_string(to->lastdata, from->lastdata, sizeof(to->lastdata));
00613       from->lastdata[0] = 0; /* theft */
00614    }
00615    if (ast_strlen_zero(to->dcontext) && !ast_strlen_zero(from->dcontext)) {
00616       ast_copy_string(to->dcontext, from->dcontext, sizeof(to->dcontext));
00617       from->dcontext[0] = 0; /* theft */
00618    }
00619    if (ast_strlen_zero(to->dstchannel) && !ast_strlen_zero(from->dstchannel)) {
00620       ast_copy_string(to->dstchannel, from->dstchannel, sizeof(to->dstchannel));
00621       from->dstchannel[0] = 0; /* theft */
00622    }
00623    if (!ast_strlen_zero(from->channel) && (ast_strlen_zero(to->channel) || !strncasecmp(from->channel, "Agent/", 6))) {
00624       ast_copy_string(to->channel, from->channel, sizeof(to->channel));
00625       from->channel[0] = 0; /* theft */
00626    }
00627    if (ast_strlen_zero(to->src) && !ast_strlen_zero(from->src)) {
00628       ast_copy_string(to->src, from->src, sizeof(to->src));
00629       from->src[0] = 0; /* theft */
00630    }
00631    if (ast_strlen_zero(to->clid) && !ast_strlen_zero(from->clid)) {
00632       ast_copy_string(to->clid, from->clid, sizeof(to->clid));
00633       from->clid[0] = 0; /* theft */
00634    }
00635    if (ast_strlen_zero(to->dst) && !ast_strlen_zero(from->dst)) {
00636       ast_copy_string(to->dst, from->dst, sizeof(to->dst));
00637       from->dst[0] = 0; /* theft */
00638    }
00639    if (!to->amaflags)
00640       to->amaflags = AST_CDR_DOCUMENTATION;
00641    if (!from->amaflags)
00642       from->amaflags = AST_CDR_DOCUMENTATION; /* make sure both amaflags are set to something (DOC is default) */
00643    if (ast_test_flag(from, AST_CDR_FLAG_LOCKED) || (to->amaflags == AST_CDR_DOCUMENTATION && from->amaflags != AST_CDR_DOCUMENTATION)) {
00644       to->amaflags = from->amaflags;
00645    }
00646    if (ast_test_flag(from, AST_CDR_FLAG_LOCKED) || (ast_strlen_zero(to->accountcode) && !ast_strlen_zero(from->accountcode))) {
00647       ast_copy_string(to->accountcode, from->accountcode, sizeof(to->accountcode));
00648    }
00649    if (ast_test_flag(from, AST_CDR_FLAG_LOCKED) || (ast_strlen_zero(to->userfield) && !ast_strlen_zero(from->userfield))) {
00650       ast_copy_string(to->userfield, from->userfield, sizeof(to->userfield));
00651    }
00652    /* flags, varsead, ? */
00653    cdr_merge_vars(from, to);
00654 
00655    if (ast_test_flag(from, AST_CDR_FLAG_KEEP_VARS))
00656       ast_set_flag(to, AST_CDR_FLAG_KEEP_VARS);
00657    if (ast_test_flag(from, AST_CDR_FLAG_POSTED))
00658       ast_set_flag(to, AST_CDR_FLAG_POSTED);
00659    if (ast_test_flag(from, AST_CDR_FLAG_LOCKED))
00660       ast_set_flag(to, AST_CDR_FLAG_LOCKED);
00661    if (ast_test_flag(from, AST_CDR_FLAG_CHILD))
00662       ast_set_flag(to, AST_CDR_FLAG_CHILD);
00663    if (ast_test_flag(from, AST_CDR_FLAG_POST_DISABLED))
00664       ast_set_flag(to, AST_CDR_FLAG_POST_DISABLED);
00665 
00666    /* last, but not least, we need to merge any forked CDRs to the 'to' cdr */
00667    while (from->next) {
00668       /* just rip 'em off the 'from' and insert them on the 'to' */
00669       zcdr = from->next;
00670       from->next = zcdr->next;
00671       zcdr->next = NULL;
00672       /* zcdr is now ripped from the current list; */
00673       ast_cdr_append(to, zcdr);
00674    }
00675    if (discard_from)
00676       ast_cdr_discard(from);
00677 }
00678 
00679 void ast_cdr_start(struct ast_cdr *cdr)
00680 {
00681    char *chan; 
00682 
00683    for (; cdr; cdr = cdr->next) {
00684       if (!ast_test_flag(cdr, AST_CDR_FLAG_LOCKED)) {
00685          chan = S_OR(cdr->channel, "<unknown>");
00686          check_post(cdr);
00687          cdr->start = ast_tvnow();
00688       }
00689    }
00690 }
00691 
00692 void ast_cdr_answer(struct ast_cdr *cdr)
00693 {
00694 
00695    for (; cdr; cdr = cdr->next) {
00696       check_post(cdr);
00697       if (cdr->disposition < AST_CDR_ANSWERED)
00698          cdr->disposition = AST_CDR_ANSWERED;
00699       if (ast_tvzero(cdr->answer))
00700          cdr->answer = ast_tvnow();
00701    }
00702 }
00703 
00704 void ast_cdr_busy(struct ast_cdr *cdr)
00705 {
00706 
00707    for (; cdr; cdr = cdr->next) {
00708       if (!ast_test_flag(cdr, AST_CDR_FLAG_LOCKED)) {
00709          check_post(cdr);
00710          if (cdr->disposition < AST_CDR_BUSY)
00711             cdr->disposition = AST_CDR_BUSY;
00712       }
00713    }
00714 }
00715 
00716 void ast_cdr_failed(struct ast_cdr *cdr)
00717 {
00718    for (; cdr; cdr = cdr->next) {
00719       check_post(cdr);
00720       if (!ast_test_flag(cdr, AST_CDR_FLAG_LOCKED)) {
00721          if (cdr->disposition < AST_CDR_FAILED)
00722             cdr->disposition = AST_CDR_FAILED;
00723       }
00724    }
00725 }
00726 
00727 void ast_cdr_noanswer(struct ast_cdr *cdr)
00728 {
00729    char *chan; 
00730 
00731    while (cdr) {
00732       chan = !ast_strlen_zero(cdr->channel) ? cdr->channel : "<unknown>";
00733       if (ast_test_flag(cdr, AST_CDR_FLAG_POSTED))
00734          ast_log(LOG_WARNING, "CDR on channel '%s' already posted\n", chan);
00735       if (!ast_test_flag(cdr, AST_CDR_FLAG_LOCKED)) {
00736          if (cdr->disposition < AST_CDR_NOANSWER)
00737             cdr->disposition = AST_CDR_NOANSWER;
00738       }
00739       cdr = cdr->next;
00740    }
00741 }
00742 
00743 int ast_cdr_disposition(struct ast_cdr *cdr, int cause)
00744 {
00745    int res = 0;
00746 
00747    for (; cdr; cdr = cdr->next) {
00748       switch(cause) {
00749       case AST_CAUSE_BUSY:
00750          ast_cdr_busy(cdr);
00751          break;
00752       case AST_CAUSE_FAILURE:
00753       case AST_CAUSE_NORMAL_CIRCUIT_CONGESTION:
00754          ast_cdr_failed(cdr);
00755          break;
00756       case AST_CAUSE_NORMAL:
00757          break;
00758       case AST_CAUSE_NOTDEFINED:
00759          res = -1;
00760          break;
00761       default:
00762          res = -1;
00763          ast_log(LOG_WARNING, "Cause (%d) not handled\n", cause);
00764       }
00765    }
00766    return res;
00767 }
00768 
00769 void ast_cdr_setdestchan(struct ast_cdr *cdr, const char *chann)
00770 {
00771    for (; cdr; cdr = cdr->next) {
00772       check_post(cdr);
00773       if (!ast_test_flag(cdr, AST_CDR_FLAG_LOCKED))
00774          ast_copy_string(cdr->dstchannel, chann, sizeof(cdr->dstchannel));
00775    }
00776 }
00777 
00778 void ast_cdr_setapp(struct ast_cdr *cdr, char *app, char *data)
00779 {
00780 
00781    for (; cdr; cdr = cdr->next) {
00782       if (!ast_test_flag(cdr, AST_CDR_FLAG_LOCKED)) {
00783          check_post(cdr);
00784          if (!app)
00785             app = "";
00786          ast_copy_string(cdr->lastapp, app, sizeof(cdr->lastapp));
00787          if (!data)
00788             data = "";
00789          ast_copy_string(cdr->lastdata, data, sizeof(cdr->lastdata));
00790       }
00791    }
00792 }
00793 
00794 /* set cid info for one record */
00795 static void set_one_cid(struct ast_cdr *cdr, struct ast_channel *c)
00796 {
00797    /* Grab source from ANI or normal Caller*ID */
00798    const char *num = S_OR(c->cid.cid_ani, c->cid.cid_num);
00799    if (!cdr)
00800       return;
00801    if (!ast_strlen_zero(c->cid.cid_name)) {
00802       if (!ast_strlen_zero(num)) /* both name and number */
00803          snprintf(cdr->clid, sizeof(cdr->clid), "\"%s\" <%s>", c->cid.cid_name, num);
00804       else           /* only name */
00805          ast_copy_string(cdr->clid, c->cid.cid_name, sizeof(cdr->clid));
00806    } else if (!ast_strlen_zero(num)) { /* only number */
00807       ast_copy_string(cdr->clid, num, sizeof(cdr->clid));
00808    } else {          /* nothing known */
00809       cdr->clid[0] = '\0';
00810    }
00811    ast_copy_string(cdr->src, S_OR(num, ""), sizeof(cdr->src));
00812 
00813 }
00814 int ast_cdr_setcid(struct ast_cdr *cdr, struct ast_channel *c)
00815 {
00816    for (; cdr; cdr = cdr->next) {
00817       if (!ast_test_flag(cdr, AST_CDR_FLAG_LOCKED))
00818          set_one_cid(cdr, c);
00819    }
00820    return 0;
00821 }
00822 
00823 int ast_cdr_init(struct ast_cdr *cdr, struct ast_channel *c)
00824 {
00825    char *chan;
00826 
00827    for ( ; cdr ; cdr = cdr->next) {
00828       if (!ast_test_flag(cdr, AST_CDR_FLAG_LOCKED)) {
00829          chan = S_OR(cdr->channel, "<unknown>");
00830          if (!ast_strlen_zero(cdr->channel)) 
00831             ast_log(LOG_WARNING, "CDR already initialized on '%s'\n", chan); 
00832          ast_copy_string(cdr->channel, c->name, sizeof(cdr->channel));
00833          set_one_cid(cdr, c);
00834 
00835          cdr->disposition = (c->_state == AST_STATE_UP) ?  AST_CDR_ANSWERED : AST_CDR_NULL;
00836          cdr->amaflags = c->amaflags ? c->amaflags :  ast_default_amaflags;
00837          ast_copy_string(cdr->accountcode, c->accountcode, sizeof(cdr->accountcode));
00838          /* Destination information */
00839          ast_copy_string(cdr->dst, S_OR(c->macroexten,c->exten), sizeof(cdr->dst));
00840          ast_copy_string(cdr->dcontext, S_OR(c->macrocontext,c->context), sizeof(cdr->dcontext));
00841          /* Unique call identifier */
00842          ast_copy_string(cdr->uniqueid, c->uniqueid, sizeof(cdr->uniqueid));
00843       }
00844    }
00845    return 0;
00846 }
00847 
00848 void ast_cdr_end(struct ast_cdr *cdr)
00849 {
00850    for ( ; cdr ; cdr = cdr->next) {
00851       check_post(cdr);
00852       if (ast_tvzero(cdr->end))
00853          cdr->end = ast_tvnow();
00854       if (ast_tvzero(cdr->start)) {
00855          ast_log(LOG_WARNING, "CDR on channel '%s' has not started\n", S_OR(cdr->channel, "<unknown>"));
00856          cdr->disposition = AST_CDR_FAILED;
00857       } else
00858          cdr->duration = cdr->end.tv_sec - cdr->start.tv_sec;
00859       cdr->billsec = ast_tvzero(cdr->answer) ? 0 : cdr->end.tv_sec - cdr->answer.tv_sec;
00860    }
00861 }
00862 
00863 char *ast_cdr_disp2str(int disposition)
00864 {
00865    switch (disposition) {
00866    case AST_CDR_NULL:
00867       return "NO ANSWER"; /* by default, for backward compatibility */
00868    case AST_CDR_NOANSWER:
00869       return "NO ANSWER";
00870    case AST_CDR_FAILED:
00871       return "FAILED";     
00872    case AST_CDR_BUSY:
00873       return "BUSY";    
00874    case AST_CDR_ANSWERED:
00875       return "ANSWERED";
00876    }
00877    return "UNKNOWN";
00878 }
00879 
00880 /*! Converts AMA flag to printable string */
00881 char *ast_cdr_flags2str(int flag)
00882 {
00883    switch(flag) {
00884    case AST_CDR_OMIT:
00885       return "OMIT";
00886    case AST_CDR_BILLING:
00887       return "BILLING";
00888    case AST_CDR_DOCUMENTATION:
00889       return "DOCUMENTATION";
00890    }
00891    return "Unknown";
00892 }
00893 
00894 int ast_cdr_setaccount(struct ast_channel *chan, const char *account)
00895 {
00896    struct ast_cdr *cdr = chan->cdr;
00897 
00898    ast_string_field_set(chan, accountcode, account);
00899    for ( ; cdr ; cdr = cdr->next) {
00900       if (!ast_test_flag(cdr, AST_CDR_FLAG_LOCKED)) {
00901          ast_copy_string(cdr->accountcode, chan->accountcode, sizeof(cdr->accountcode));
00902       }
00903    }
00904    return 0;
00905 }
00906 
00907 int ast_cdr_setamaflags(struct ast_channel *chan, const char *flag)
00908 {
00909    struct ast_cdr *cdr;
00910    int newflag = ast_cdr_amaflags2int(flag);
00911    if (newflag) {
00912       for (cdr = chan->cdr; cdr; cdr = cdr->next) {
00913          if (!ast_test_flag(cdr, AST_CDR_FLAG_LOCKED)) {
00914             cdr->amaflags = newflag;
00915          }
00916       }
00917    }
00918 
00919    return 0;
00920 }
00921 
00922 int ast_cdr_setuserfield(struct ast_channel *chan, const char *userfield)
00923 {
00924    struct ast_cdr *cdr = chan->cdr;
00925 
00926    for ( ; cdr ; cdr = cdr->next) {
00927       if (!ast_test_flag(cdr, AST_CDR_FLAG_LOCKED)) 
00928          ast_copy_string(cdr->userfield, userfield, sizeof(cdr->userfield));
00929    }
00930 
00931    return 0;
00932 }
00933 
00934 int ast_cdr_appenduserfield(struct ast_channel *chan, const char *userfield)
00935 {
00936    struct ast_cdr *cdr = chan->cdr;
00937 
00938    for ( ; cdr ; cdr = cdr->next) {
00939       int len = strlen(cdr->userfield);
00940 
00941       if (!ast_test_flag(cdr, AST_CDR_FLAG_LOCKED))
00942          ast_copy_string(cdr->userfield + len, userfield, sizeof(cdr->userfield) - len);
00943    }
00944 
00945    return 0;
00946 }
00947 
00948 int ast_cdr_update(struct ast_channel *c)
00949 {
00950    struct ast_cdr *cdr = c->cdr;
00951 
00952    for ( ; cdr ; cdr = cdr->next) {
00953       if (!ast_test_flag(cdr, AST_CDR_FLAG_LOCKED)) {
00954          set_one_cid(cdr, c);
00955 
00956          /* Copy account code et-al */ 
00957          ast_copy_string(cdr->accountcode, c->accountcode, sizeof(cdr->accountcode));
00958          
00959          /* Destination information */ /* XXX privilege macro* ? */
00960          ast_copy_string(cdr->dst, S_OR(c->macroexten, c->exten), sizeof(cdr->dst));
00961          ast_copy_string(cdr->dcontext, S_OR(c->macrocontext, c->context), sizeof(cdr->dcontext));
00962       }
00963    }
00964 
00965    return 0;
00966 }
00967 
00968 int ast_cdr_amaflags2int(const char *flag)
00969 {
00970    if (!strcasecmp(flag, "default"))
00971       return 0;
00972    if (!strcasecmp(flag, "omit"))
00973       return AST_CDR_OMIT;
00974    if (!strcasecmp(flag, "billing"))
00975       return AST_CDR_BILLING;
00976    if (!strcasecmp(flag, "documentation"))
00977       return AST_CDR_DOCUMENTATION;
00978    return -1;
00979 }
00980 
00981 static void post_cdr(struct ast_cdr *cdr)
00982 {
00983    char *chan;
00984    struct ast_cdr_beitem *i;
00985 
00986    for ( ; cdr ; cdr = cdr->next) {
00987       chan = S_OR(cdr->channel, "<unknown>");
00988       check_post(cdr);
00989       if (ast_tvzero(cdr->end))
00990          ast_log(LOG_WARNING, "CDR on channel '%s' lacks end\n", chan);
00991       if (ast_tvzero(cdr->start))
00992          ast_log(LOG_WARNING, "CDR on channel '%s' lacks start\n", chan);
00993       ast_set_flag(cdr, AST_CDR_FLAG_POSTED);
00994       if (ast_test_flag(cdr, AST_CDR_FLAG_POST_DISABLED))
00995          continue;
00996       AST_LIST_LOCK(&be_list);
00997       AST_LIST_TRAVERSE(&be_list, i, list) {
00998          i->be(cdr);
00999       }
01000       AST_LIST_UNLOCK(&be_list);
01001    }
01002 }
01003 
01004 void ast_cdr_reset(struct ast_cdr *cdr, struct ast_flags *_flags)
01005 {
01006    struct ast_cdr *dup;
01007    struct ast_flags flags = { 0 };
01008 
01009    if (_flags)
01010       ast_copy_flags(&flags, _flags, AST_FLAGS_ALL);
01011 
01012    for ( ; cdr ; cdr = cdr->next) {
01013       /* Detach if post is requested */
01014       if (ast_test_flag(&flags, AST_CDR_FLAG_LOCKED) || !ast_test_flag(cdr, AST_CDR_FLAG_LOCKED)) {
01015          if (ast_test_flag(&flags, AST_CDR_FLAG_POSTED)) {
01016             ast_cdr_end(cdr);
01017             if ((dup = ast_cdr_dup(cdr))) {
01018                ast_cdr_detach(dup);
01019             }
01020             ast_set_flag(cdr, AST_CDR_FLAG_POSTED);
01021          }
01022 
01023          /* clear variables */
01024          if (!ast_test_flag(&flags, AST_CDR_FLAG_KEEP_VARS)) {
01025             ast_cdr_free_vars(cdr, 0);
01026          }
01027 
01028          /* Reset to initial state */
01029          ast_clear_flag(cdr, AST_FLAGS_ALL); 
01030          memset(&cdr->start, 0, sizeof(cdr->start));
01031          memset(&cdr->end, 0, sizeof(cdr->end));
01032          memset(&cdr->answer, 0, sizeof(cdr->answer));
01033          cdr->billsec = 0;
01034          cdr->duration = 0;
01035          ast_cdr_start(cdr);
01036          cdr->disposition = AST_CDR_NULL;
01037       }
01038    }
01039 }
01040 
01041 struct ast_cdr *ast_cdr_append(struct ast_cdr *cdr, struct ast_cdr *newcdr) 
01042 {
01043    struct ast_cdr *ret;
01044 
01045    if (cdr) {
01046       ret = cdr;
01047 
01048       while (cdr->next)
01049          cdr = cdr->next;
01050       cdr->next = newcdr;
01051    } else {
01052       ret = newcdr;
01053    }
01054 
01055    return ret;
01056 }
01057 
01058 /*! \note Don't call without cdr_batch_lock */
01059 static void reset_batch(void)
01060 {
01061    batch->size = 0;
01062    batch->head = NULL;
01063    batch->tail = NULL;
01064 }
01065 
01066 /*! \note Don't call without cdr_batch_lock */
01067 static int init_batch(void)
01068 {
01069    /* This is the single meta-batch used to keep track of all CDRs during the entire life of the program */
01070    if (!(batch = ast_malloc(sizeof(*batch))))
01071       return -1;
01072 
01073    reset_batch();
01074 
01075    return 0;
01076 }
01077 
01078 static void *do_batch_backend_process(void *data)
01079 {
01080    struct ast_cdr_batch_item *processeditem;
01081    struct ast_cdr_batch_item *batchitem = data;
01082 
01083    /* Push each CDR into storage mechanism(s) and free all the memory */
01084    while (batchitem) {
01085       post_cdr(batchitem->cdr);
01086       ast_cdr_free(batchitem->cdr);
01087       processeditem = batchitem;
01088       batchitem = batchitem->next;
01089       free(processeditem);
01090    }
01091 
01092    return NULL;
01093 }
01094 
01095 void ast_cdr_submit_batch(int shutdown)
01096 {
01097    struct ast_cdr_batch_item *oldbatchitems = NULL;
01098    pthread_attr_t attr;
01099    pthread_t batch_post_thread = AST_PTHREADT_NULL;
01100 
01101    /* if there's no batch, or no CDRs in the batch, then there's nothing to do */
01102    if (!batch || !batch->head)
01103       return;
01104 
01105    /* move the old CDRs aside, and prepare a new CDR batch */
01106    ast_mutex_lock(&cdr_batch_lock);
01107    oldbatchitems = batch->head;
01108    reset_batch();
01109    ast_mutex_unlock(&cdr_batch_lock);
01110 
01111    /* if configured, spawn a new thread to post these CDRs,
01112       also try to save as much as possible if we are shutting down safely */
01113    if (batchscheduleronly || shutdown) {
01114       if (option_debug)
01115          ast_log(LOG_DEBUG, "CDR single-threaded batch processing begins now\n");
01116       do_batch_backend_process(oldbatchitems);
01117    } else {
01118       pthread_attr_init(&attr);
01119       pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED);
01120       if (ast_pthread_create_background(&batch_post_thread, &attr, do_batch_backend_process, oldbatchitems)) {
01121          ast_log(LOG_WARNING, "CDR processing thread could not detach, now trying in this thread\n");
01122          do_batch_backend_process(oldbatchitems);
01123       } else {
01124          if (option_debug)
01125             ast_log(LOG_DEBUG, "CDR multi-threaded batch processing begins now\n");
01126       }
01127       pthread_attr_destroy(&attr);
01128    }
01129 }
01130 
01131 static int submit_scheduled_batch(void *data)
01132 {
01133    ast_cdr_submit_batch(0);
01134    /* manually reschedule from this point in time */
01135    cdr_sched = ast_sched_add(sched, batchtime * 1000, submit_scheduled_batch, NULL);
01136    /* returning zero so the scheduler does not automatically reschedule */
01137    return 0;
01138 }
01139 
01140 static void submit_unscheduled_batch(void)
01141 {
01142    /* this is okay since we are not being called from within the scheduler */
01143    if (cdr_sched > -1)
01144       ast_sched_del(sched, cdr_sched);
01145    /* schedule the submission to occur ASAP (1 ms) */
01146    cdr_sched = ast_sched_add(sched, 1, submit_scheduled_batch, NULL);
01147    /* signal the do_cdr thread to wakeup early and do some work (that lazy thread ;) */
01148    ast_mutex_lock(&cdr_pending_lock);
01149    ast_cond_signal(&cdr_pending_cond);
01150    ast_mutex_unlock(&cdr_pending_lock);
01151 }
01152 
01153 void ast_cdr_detach(struct ast_cdr *cdr)
01154 {
01155    struct ast_cdr_batch_item *newtail;
01156    int curr;
01157 
01158    if (!cdr)
01159       return;
01160 
01161    /* maybe they disabled CDR stuff completely, so just drop it */
01162    if (!enabled) {
01163       if (option_debug)
01164          ast_log(LOG_DEBUG, "Dropping CDR !\n");
01165       ast_set_flag(cdr, AST_CDR_FLAG_POST_DISABLED);
01166       ast_cdr_free(cdr);
01167       return;
01168    }
01169 
01170    /* post stuff immediately if we are not in batch mode, this is legacy behaviour */
01171    if (!batchmode) {
01172       post_cdr(cdr);
01173       ast_cdr_free(cdr);
01174       return;
01175    }
01176 
01177    /* otherwise, each CDR gets put into a batch list (at the end) */
01178    if (option_debug)
01179       ast_log(LOG_DEBUG, "CDR detaching from this thread\n");
01180 
01181    /* we'll need a new tail for every CDR */
01182    if (!(newtail = ast_calloc(1, sizeof(*newtail)))) {
01183       post_cdr(cdr);
01184       ast_cdr_free(cdr);
01185       return;
01186    }
01187 
01188    /* don't traverse a whole list (just keep track of the tail) */
01189    ast_mutex_lock(&cdr_batch_lock);
01190    if (!batch)
01191       init_batch();
01192    if (!batch->head) {
01193       /* new batch is empty, so point the head at the new tail */
01194       batch->head = newtail;
01195    } else {
01196       /* already got a batch with something in it, so just append a new tail */
01197       batch->tail->next = newtail;
01198    }
01199    newtail->cdr = cdr;
01200    batch->tail = newtail;
01201    curr = batch->size++;
01202    ast_mutex_unlock(&cdr_batch_lock);
01203 
01204    /* if we have enough stuff to post, then do it */
01205    if (curr >= (batchsize - 1))
01206       submit_unscheduled_batch();
01207 }
01208 
01209 static void *do_cdr(void *data)
01210 {
01211    struct timespec timeout;
01212    int schedms;
01213    int numevents = 0;
01214 
01215    for(;;) {
01216       struct timeval now;
01217       schedms = ast_sched_wait(sched);
01218       /* this shouldn't happen, but provide a 1 second default just in case */
01219       if (schedms <= 0)
01220          schedms = 1000;
01221       now = ast_tvadd(ast_tvnow(), ast_samp2tv(schedms, 1000));
01222       timeout.tv_sec = now.tv_sec;
01223       timeout.tv_nsec = now.tv_usec * 1000;
01224       /* prevent stuff from clobbering cdr_pending_cond, then wait on signals sent to it until the timeout expires */
01225       ast_mutex_lock(&cdr_pending_lock);
01226       ast_cond_timedwait(&cdr_pending_cond, &cdr_pending_lock, &timeout);
01227       numevents = ast_sched_runq(sched);
01228       ast_mutex_unlock(&cdr_pending_lock);
01229       if (option_debug > 1)
01230          ast_log(LOG_DEBUG, "Processed %d scheduled CDR batches from the run queue\n", numevents);
01231    }
01232 
01233    return NULL;
01234 }
01235 
01236 static int handle_cli_status(int fd, int argc, char *argv[])
01237 {
01238    struct ast_cdr_beitem *beitem=NULL;
01239    int cnt=0;
01240    long nextbatchtime=0;
01241 
01242    if (argc > 2)
01243       return RESULT_SHOWUSAGE;
01244 
01245    ast_cli(fd, "CDR logging: %s\n", enabled ? "enabled" : "disabled");
01246    ast_cli(fd, "CDR mode: %s\n", batchmode ? "batch" : "simple");
01247    if (enabled) {
01248       if (batchmode) {
01249          if (batch)
01250             cnt = batch->size;
01251          if (cdr_sched > -1)
01252             nextbatchtime = ast_sched_when(sched, cdr_sched);
01253          ast_cli(fd, "CDR safe shut down: %s\n", batchsafeshutdown ? "enabled" : "disabled");
01254          ast_cli(fd, "CDR batch threading model: %s\n", batchscheduleronly ? "scheduler only" : "scheduler plus separate threads");
01255          ast_cli(fd, "CDR current batch size: %d record%s\n", cnt, (cnt != 1) ? "s" : "");
01256          ast_cli(fd, "CDR maximum batch size: %d record%s\n", batchsize, (batchsize != 1) ? "s" : "");
01257          ast_cli(fd, "CDR maximum batch time: %d second%s\n", batchtime, (batchtime != 1) ? "s" : "");
01258          ast_cli(fd, "CDR next scheduled batch processing time: %ld second%s\n", nextbatchtime, (nextbatchtime != 1) ? "s" : "");
01259       }
01260       AST_LIST_LOCK(&be_list);
01261       AST_LIST_TRAVERSE(&be_list, beitem, list) {
01262          ast_cli(fd, "CDR registered backend: %s\n", beitem->name);
01263       }
01264       AST_LIST_UNLOCK(&be_list);
01265    }
01266 
01267    return 0;
01268 }
01269 
01270 static int handle_cli_submit(int fd, int argc, char *argv[])
01271 {
01272    if (argc > 2)
01273       return RESULT_SHOWUSAGE;
01274 
01275    submit_unscheduled_batch();
01276    ast_cli(fd, "Submitted CDRs to backend engines for processing.  This may take a while.\n");
01277 
01278    return 0;
01279 }
01280 
01281 static struct ast_cli_entry cli_submit = {
01282    { "cdr", "submit", NULL },
01283    handle_cli_submit, "Posts all pending batched CDR data",
01284    "Usage: cdr submit\n"
01285    "       Posts all pending batched CDR data to the configured CDR backend engine modules.\n"
01286 };
01287 
01288 static struct ast_cli_entry cli_status = {
01289    { "cdr", "status", NULL },
01290    handle_cli_status, "Display the CDR status",
01291    "Usage: cdr status\n"
01292    "  Displays the Call Detail Record engine system status.\n"
01293 };
01294 
01295 static int do_reload(void)
01296 {
01297    struct ast_config *config;
01298    const char *enabled_value;
01299    const char *batched_value;
01300    const char *scheduleronly_value;
01301    const char *batchsafeshutdown_value;
01302    const char *size_value;
01303    const char *time_value;
01304    const char *end_before_h_value;
01305    int cfg_size;
01306    int cfg_time;
01307    int was_enabled;
01308    int was_batchmode;
01309    int res=0;
01310 
01311    ast_mutex_lock(&cdr_batch_lock);
01312 
01313    batchsize = BATCH_SIZE_DEFAULT;
01314    batchtime = BATCH_TIME_DEFAULT;
01315    batchscheduleronly = BATCH_SCHEDULER_ONLY_DEFAULT;
01316    batchsafeshutdown = BATCH_SAFE_SHUTDOWN_DEFAULT;
01317    was_enabled = enabled;
01318    was_batchmode = batchmode;
01319    enabled = 1;
01320    batchmode = 0;
01321 
01322    /* don't run the next scheduled CDR posting while reloading */
01323    if (cdr_sched > -1)
01324       ast_sched_del(sched, cdr_sched);
01325 
01326    if ((config = ast_config_load("cdr.conf"))) {
01327       if ((enabled_value = ast_variable_retrieve(config, "general", "enable"))) {
01328          enabled = ast_true(enabled_value);
01329       }
01330       if ((batched_value = ast_variable_retrieve(config, "general", "batch"))) {
01331          batchmode = ast_true(batched_value);
01332       }
01333       if ((scheduleronly_value = ast_variable_retrieve(config, "general", "scheduleronly"))) {
01334          batchscheduleronly = ast_true(scheduleronly_value);
01335       }
01336       if ((batchsafeshutdown_value = ast_variable_retrieve(config, "general", "safeshutdown"))) {
01337          batchsafeshutdown = ast_true(batchsafeshutdown_value);
01338       }
01339       if ((size_value = ast_variable_retrieve(config, "general", "size"))) {
01340          if (sscanf(size_value, "%d", &cfg_size) < 1)
01341             ast_log(LOG_WARNING, "Unable to convert '%s' to a numeric value.\n", size_value);
01342          else if (size_value < 0)
01343             ast_log(LOG_WARNING, "Invalid maximum batch size '%d' specified, using default\n", cfg_size);
01344          else
01345             batchsize = cfg_size;
01346       }
01347       if ((time_value = ast_variable_retrieve(config, "general", "time"))) {
01348          if (sscanf(time_value, "%d", &cfg_time) < 1)
01349             ast_log(LOG_WARNING, "Unable to convert '%s' to a numeric value.\n", time_value);
01350          else if (time_value < 0)
01351             ast_log(LOG_WARNING, "Invalid maximum batch time '%d' specified, using default\n", cfg_time);
01352          else
01353             batchtime = cfg_time;
01354       }
01355       if ((end_before_h_value = ast_variable_retrieve(config, "general", "endbeforehexten")))
01356          ast_set2_flag(&ast_options, ast_true(end_before_h_value), AST_OPT_FLAG_END_CDR_BEFORE_H_EXTEN);
01357    }
01358 
01359    if (enabled && !batchmode) {
01360       ast_log(LOG_NOTICE, "CDR simple logging enabled.\n");
01361    } else if (enabled && batchmode) {
01362       cdr_sched = ast_sched_add(sched, batchtime * 1000, submit_scheduled_batch, NULL);
01363       ast_log(LOG_NOTICE, "CDR batch mode logging enabled, first of either size %d or time %d seconds.\n", batchsize, batchtime);
01364    } else {
01365       ast_log(LOG_NOTICE, "CDR logging disabled, data will be lost.\n");
01366    }
01367 
01368    /* if this reload enabled the CDR batch mode, create the background thread
01369       if it does not exist */
01370    if (enabled && batchmode && (!was_enabled || !was_batchmode) && (cdr_thread == AST_PTHREADT_NULL)) {
01371       ast_cond_init(&cdr_pending_cond, NULL);
01372       if (ast_pthread_create_background(&cdr_thread, NULL, do_cdr, NULL) < 0) {
01373          ast_log(LOG_ERROR, "Unable to start CDR thread.\n");
01374          ast_sched_del(sched, cdr_sched);
01375       } else {
01376          ast_cli_register(&cli_submit);
01377          ast_register_atexit(ast_cdr_engine_term);
01378          res = 0;
01379       }
01380    /* if this reload disabled the CDR and/or batch mode and there is a background thread,
01381       kill it */
01382    } else if (((!enabled && was_enabled) || (!batchmode && was_batchmode)) && (cdr_thread != AST_PTHREADT_NULL)) {
01383       /* wake up the thread so it will exit */
01384       pthread_cancel(cdr_thread);
01385       pthread_kill(cdr_thread, SIGURG);
01386       pthread_join(cdr_thread, NULL);
01387       cdr_thread = AST_PTHREADT_NULL;
01388       ast_cond_destroy(&cdr_pending_cond);
01389       ast_cli_unregister(&cli_submit);
01390       ast_unregister_atexit(ast_cdr_engine_term);
01391       res = 0;
01392       /* if leaving batch mode, then post the CDRs in the batch,
01393          and don't reschedule, since we are stopping CDR logging */
01394       if (!batchmode && was_batchmode) {
01395          ast_cdr_engine_term();
01396       }
01397    } else {
01398       res = 0;
01399    }
01400 
01401    ast_mutex_unlock(&cdr_batch_lock);
01402    ast_config_destroy(config);
01403 
01404    return res;
01405 }
01406 
01407 int ast_cdr_engine_init(void)
01408 {
01409    int res;
01410 
01411    sched = sched_context_create();
01412    if (!sched) {
01413       ast_log(LOG_ERROR, "Unable to create schedule context.\n");
01414       return -1;
01415    }
01416 
01417    ast_cli_register(&cli_status);
01418 
01419    res = do_reload();
01420    if (res) {
01421       ast_mutex_lock(&cdr_batch_lock);
01422       res = init_batch();
01423       ast_mutex_unlock(&cdr_batch_lock);
01424    }
01425 
01426    return res;
01427 }
01428 
01429 /* \note This actually gets called a couple of times at shutdown.  Once, before we start
01430    hanging up channels, and then again, after the channel hangup timeout expires */
01431 void ast_cdr_engine_term(void)
01432 {
01433    ast_cdr_submit_batch(batchsafeshutdown);
01434 }
01435 
01436 int ast_cdr_engine_reload(void)
01437 {
01438    return do_reload();
01439 }
01440 

Generated on Fri Aug 24 02:22:11 2007 for Asterisk - the Open Source PBX by  doxygen 1.5.1