Merged revisions 59522 via svnmerge from
[asterisk/asterisk.git] / main / cdr.c
1 /*
2  * Asterisk -- An open source telephony toolkit.
3  *
4  * Copyright (C) 1999 - 2006, Digium, Inc.
5  *
6  * Mark Spencer <markster@digium.com>
7  *
8  * See http://www.asterisk.org for more information about
9  * the Asterisk project. Please do not directly contact
10  * any of the maintainers of this project for assistance;
11  * the project provides a web site, mailing lists and IRC
12  * channels for your use.
13  *
14  * This program is free software, distributed under the terms of
15  * the GNU General Public License Version 2. See the LICENSE file
16  * at the top of the source tree.
17  */
18
19 /*! \file
20  *
21  * \brief Call Detail Record API 
22  *
23  * \author Mark Spencer <markster@digium.com>
24  * 
25  * \note Includes code and algorithms from the Zapata library.
26  *
27  * \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
28  * through our fingers somehow.  If someone allocates a CDR, it must be completely handled normally
29  * or a WARNING shall be logged, so that we can best keep track of any escape condition where the CDR
30  * isn't properly generated and posted.
31  */
32
33
34 #include "asterisk.h"
35
36 ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
37
38 #include <unistd.h>
39 #include <stdlib.h>
40 #include <string.h>
41 #include <stdio.h>
42 #include <signal.h>
43
44 #include "asterisk/lock.h"
45 #include "asterisk/channel.h"
46 #include "asterisk/cdr.h"
47 #include "asterisk/logger.h"
48 #include "asterisk/callerid.h"
49 #include "asterisk/causes.h"
50 #include "asterisk/options.h"
51 #include "asterisk/linkedlists.h"
52 #include "asterisk/utils.h"
53 #include "asterisk/sched.h"
54 #include "asterisk/config.h"
55 #include "asterisk/cli.h"
56 #include "asterisk/stringfields.h"
57
58 /*! Default AMA flag for billing records (CDR's) */
59 int ast_default_amaflags = AST_CDR_DOCUMENTATION;
60 char ast_default_accountcode[AST_MAX_ACCOUNT_CODE];
61
62 struct ast_cdr_beitem {
63         char name[20];
64         char desc[80];
65         ast_cdrbe be;
66         AST_LIST_ENTRY(ast_cdr_beitem) list;
67 };
68
69 static AST_LIST_HEAD_STATIC(be_list, ast_cdr_beitem);
70
71 struct ast_cdr_batch_item {
72         struct ast_cdr *cdr;
73         struct ast_cdr_batch_item *next;
74 };
75
76 static struct ast_cdr_batch {
77         int size;
78         struct ast_cdr_batch_item *head;
79         struct ast_cdr_batch_item *tail;
80 } *batch;
81
82 static struct sched_context *sched;
83 static int cdr_sched = -1;
84 static pthread_t cdr_thread = AST_PTHREADT_NULL;
85
86 #define BATCH_SIZE_DEFAULT 100
87 #define BATCH_TIME_DEFAULT 300
88 #define BATCH_SCHEDULER_ONLY_DEFAULT 0
89 #define BATCH_SAFE_SHUTDOWN_DEFAULT 1
90
91 static int enabled;             /*! Is the CDR subsystem enabled ? */
92 static int batchmode;
93 static int batchsize;
94 static int batchtime;
95 static int batchscheduleronly;
96 static int batchsafeshutdown;
97
98 AST_MUTEX_DEFINE_STATIC(cdr_batch_lock);
99
100 /* these are used to wake up the CDR thread when there's work to do */
101 AST_MUTEX_DEFINE_STATIC(cdr_pending_lock);
102 static ast_cond_t cdr_pending_cond;
103
104 int check_cdr_enabled()
105 {
106         return enabled;
107 }
108
109 /*! Register a CDR driver. Each registered CDR driver generates a CDR 
110         \return 0 on success, -1 on failure 
111 */
112 int ast_cdr_register(const char *name, const char *desc, ast_cdrbe be)
113 {
114         struct ast_cdr_beitem *i;
115
116         if (!name)
117                 return -1;
118         if (!be) {
119                 ast_log(LOG_WARNING, "CDR engine '%s' lacks backend\n", name);
120                 return -1;
121         }
122
123         AST_LIST_LOCK(&be_list);
124         AST_LIST_TRAVERSE(&be_list, i, list) {
125                 if (!strcasecmp(name, i->name))
126                         break;
127         }
128         AST_LIST_UNLOCK(&be_list);
129
130         if (i) {
131                 ast_log(LOG_WARNING, "Already have a CDR backend called '%s'\n", name);
132                 return -1;
133         }
134
135         if (!(i = ast_calloc(1, sizeof(*i))))   
136                 return -1;
137
138         i->be = be;
139         ast_copy_string(i->name, name, sizeof(i->name));
140         ast_copy_string(i->desc, desc, sizeof(i->desc));
141
142         AST_LIST_LOCK(&be_list);
143         AST_LIST_INSERT_HEAD(&be_list, i, list);
144         AST_LIST_UNLOCK(&be_list);
145
146         return 0;
147 }
148
149 /*! unregister a CDR driver */
150 void ast_cdr_unregister(const char *name)
151 {
152         struct ast_cdr_beitem *i = NULL;
153
154         AST_LIST_LOCK(&be_list);
155         AST_LIST_TRAVERSE_SAFE_BEGIN(&be_list, i, list) {
156                 if (!strcasecmp(name, i->name)) {
157                         AST_LIST_REMOVE_CURRENT(&be_list, list);
158                         if (option_verbose > 1)
159                                 ast_verbose(VERBOSE_PREFIX_2 "Unregistered '%s' CDR backend\n", name);
160                         free(i);
161                         break;
162                 }
163         }
164         AST_LIST_TRAVERSE_SAFE_END;
165         AST_LIST_UNLOCK(&be_list);
166 }
167
168 /*! Duplicate a CDR record 
169         \returns Pointer to new CDR record
170 */
171 struct ast_cdr *ast_cdr_dup(struct ast_cdr *cdr) 
172 {
173         struct ast_cdr *newcdr;
174         
175         if (!cdr) /* don't die if we get a null cdr pointer */
176                 return NULL;
177         newcdr = ast_cdr_alloc();
178         if (!newcdr)
179                 return NULL;
180
181         memcpy(newcdr, cdr, sizeof(*newcdr));
182         /* The varshead is unusable, volatile even, after the memcpy so we take care of that here */
183         memset(&newcdr->varshead, 0, sizeof(newcdr->varshead));
184         ast_cdr_copy_vars(newcdr, cdr);
185         newcdr->next = NULL;
186
187         return newcdr;
188 }
189
190 static const char *ast_cdr_getvar_internal(struct ast_cdr *cdr, const char *name, int recur) 
191 {
192         if (ast_strlen_zero(name))
193                 return NULL;
194
195         for (; cdr; cdr = recur ? cdr->next : NULL) {
196                 struct ast_var_t *variables;
197                 struct varshead *headp = &cdr->varshead;
198                 AST_LIST_TRAVERSE(headp, variables, entries) {
199                         if (!strcasecmp(name, ast_var_name(variables)))
200                                 return ast_var_value(variables);
201                 }
202         }
203
204         return NULL;
205 }
206
207 static void cdr_get_tv(struct timeval tv, const char *fmt, char *buf, int bufsize)
208 {
209         if (fmt == NULL) {      /* raw mode */
210                 snprintf(buf, bufsize, "%ld.%06ld", (long)tv.tv_sec, (long)tv.tv_usec);
211         } else {  
212                 time_t t = tv.tv_sec;
213                 if (t) {
214                         struct tm tm;
215                         localtime_r(&t, &tm);
216                         strftime(buf, bufsize, fmt, &tm);
217                 }
218         }
219 }
220
221 /*! CDR channel variable retrieval */
222 void ast_cdr_getvar(struct ast_cdr *cdr, const char *name, char **ret, char *workspace, int workspacelen, int recur, int raw) 
223 {
224         const char *fmt = "%Y-%m-%d %T";
225         const char *varbuf;
226
227         if (!cdr)  /* don't die if the cdr is null */
228                 return;
229
230         *ret = NULL;
231         /* special vars (the ones from the struct ast_cdr when requested by name) 
232            I'd almost say we should convert all the stringed vals to vars */
233
234         if (!strcasecmp(name, "clid"))
235                 ast_copy_string(workspace, cdr->clid, workspacelen);
236         else if (!strcasecmp(name, "src"))
237                 ast_copy_string(workspace, cdr->src, workspacelen);
238         else if (!strcasecmp(name, "dst"))
239                 ast_copy_string(workspace, cdr->dst, workspacelen);
240         else if (!strcasecmp(name, "dcontext"))
241                 ast_copy_string(workspace, cdr->dcontext, workspacelen);
242         else if (!strcasecmp(name, "channel"))
243                 ast_copy_string(workspace, cdr->channel, workspacelen);
244         else if (!strcasecmp(name, "dstchannel"))
245                 ast_copy_string(workspace, cdr->dstchannel, workspacelen);
246         else if (!strcasecmp(name, "lastapp"))
247                 ast_copy_string(workspace, cdr->lastapp, workspacelen);
248         else if (!strcasecmp(name, "lastdata"))
249                 ast_copy_string(workspace, cdr->lastdata, workspacelen);
250         else if (!strcasecmp(name, "start"))
251                 cdr_get_tv(cdr->start, raw ? NULL : fmt, workspace, workspacelen);
252         else if (!strcasecmp(name, "answer"))
253                 cdr_get_tv(cdr->answer, raw ? NULL : fmt, workspace, workspacelen);
254         else if (!strcasecmp(name, "end"))
255                 cdr_get_tv(cdr->end, raw ? NULL : fmt, workspace, workspacelen);
256         else if (!strcasecmp(name, "duration"))
257                 snprintf(workspace, workspacelen, "%ld", cdr->duration);
258         else if (!strcasecmp(name, "billsec"))
259                 snprintf(workspace, workspacelen, "%ld", cdr->billsec);
260         else if (!strcasecmp(name, "disposition")) {
261                 if (raw) {
262                         snprintf(workspace, workspacelen, "%ld", cdr->disposition);
263                 } else {
264                         ast_copy_string(workspace, ast_cdr_disp2str(cdr->disposition), workspacelen);
265                 }
266         } else if (!strcasecmp(name, "amaflags")) {
267                 if (raw) {
268                         snprintf(workspace, workspacelen, "%ld", cdr->amaflags);
269                 } else {
270                         ast_copy_string(workspace, ast_cdr_flags2str(cdr->amaflags), workspacelen);
271                 }
272         } else if (!strcasecmp(name, "accountcode"))
273                 ast_copy_string(workspace, cdr->accountcode, workspacelen);
274         else if (!strcasecmp(name, "uniqueid"))
275                 ast_copy_string(workspace, cdr->uniqueid, workspacelen);
276         else if (!strcasecmp(name, "userfield"))
277                 ast_copy_string(workspace, cdr->userfield, workspacelen);
278         else if ((varbuf = ast_cdr_getvar_internal(cdr, name, recur)))
279                 ast_copy_string(workspace, varbuf, workspacelen);
280         else
281                 workspace[0] = '\0';
282
283         if (!ast_strlen_zero(workspace))
284                 *ret = workspace;
285 }
286
287 /* readonly cdr variables */
288 static  const char *cdr_readonly_vars[] = { "clid", "src", "dst", "dcontext", "channel", "dstchannel",
289                                     "lastapp", "lastdata", "start", "answer", "end", "duration",
290                                     "billsec", "disposition", "amaflags", "accountcode", "uniqueid",
291                                     "userfield", NULL };
292 /*! Set a CDR channel variable 
293         \note You can't set the CDR variables that belong to the actual CDR record, like "billsec".
294 */
295 int ast_cdr_setvar(struct ast_cdr *cdr, const char *name, const char *value, int recur) 
296 {
297         struct ast_var_t *newvariable;
298         struct varshead *headp;
299         int x;
300         
301         if (!cdr)  /* don't die if the cdr is null */
302                 return -1;
303         
304         for (x = 0; cdr_readonly_vars[x]; x++) {
305                 if (!strcasecmp(name, cdr_readonly_vars[x])) {
306                         ast_log(LOG_ERROR, "Attempt to set the '%s' read-only variable!.\n", name);
307                         return -1;
308                 }
309         }
310
311         if (!cdr) {
312                 ast_log(LOG_ERROR, "Attempt to set a variable on a nonexistent CDR record.\n");
313                 return -1;
314         }
315
316         for (; cdr; cdr = recur ? cdr->next : NULL) {
317                 headp = &cdr->varshead;
318                 AST_LIST_TRAVERSE_SAFE_BEGIN(headp, newvariable, entries) {
319                         if (!strcasecmp(ast_var_name(newvariable), name)) {
320                                 /* there is already such a variable, delete it */
321                                 AST_LIST_REMOVE_CURRENT(headp, entries);
322                                 ast_var_delete(newvariable);
323                                 break;
324                         }
325                 }
326                 AST_LIST_TRAVERSE_SAFE_END;
327
328                 if (value) {
329                         newvariable = ast_var_assign(name, value);
330                         AST_LIST_INSERT_HEAD(headp, newvariable, entries);
331                 }
332         }
333
334         return 0;
335 }
336
337 int ast_cdr_copy_vars(struct ast_cdr *to_cdr, struct ast_cdr *from_cdr)
338 {
339         struct ast_var_t *variables, *newvariable = NULL;
340         struct varshead *headpa, *headpb;
341         const char *var, *val;
342         int x = 0;
343
344         if (!to_cdr || !from_cdr) /* don't die if one of the pointers is null */
345                 return 0;
346
347         headpa = &from_cdr->varshead;
348         headpb = &to_cdr->varshead;
349
350         AST_LIST_TRAVERSE(headpa,variables,entries) {
351                 if (variables &&
352                     (var = ast_var_name(variables)) && (val = ast_var_value(variables)) &&
353                     !ast_strlen_zero(var) && !ast_strlen_zero(val)) {
354                         newvariable = ast_var_assign(var, val);
355                         AST_LIST_INSERT_HEAD(headpb, newvariable, entries);
356                         x++;
357                 }
358         }
359
360         return x;
361 }
362
363 int ast_cdr_serialize_variables(struct ast_cdr *cdr, struct ast_str **buf, char delim, char sep, int recur) 
364 {
365         struct ast_var_t *variables;
366         const char *var, *val;
367         char *tmp;
368         char workspace[256];
369         int total = 0, x = 0, i;
370
371         (*buf)->used = 0;
372         (*buf)->str[0] = '\0';
373
374         for (; cdr; cdr = recur ? cdr->next : NULL) {
375                 if (++x > 1)
376                         ast_str_append(buf, 0, "\n");
377
378                 AST_LIST_TRAVERSE(&cdr->varshead, variables, entries) {
379                         if (variables &&
380                             (var = ast_var_name(variables)) && (val = ast_var_value(variables)) &&
381                             !ast_strlen_zero(var) && !ast_strlen_zero(val)) {
382                                 if (ast_str_append(buf, 0, "level %d: %s%c%s%c", x, var, delim, val, sep) < 0) {
383                                         ast_log(LOG_ERROR, "Data Buffer Size Exceeded!\n");
384                                         break;
385                                 } else
386                                         total++;
387                         } else 
388                                 break;
389                 }
390
391                 for (i = 0; cdr_readonly_vars[i]; i++) {
392                         ast_cdr_getvar(cdr, cdr_readonly_vars[i], &tmp, workspace, sizeof(workspace), 0, 0);
393                         if (!tmp)
394                                 continue;
395                         
396                         if (ast_str_append(buf, 0, "level %d: %s%c%s%c", x, cdr_readonly_vars[i], delim, tmp, sep) < 0) {
397                                 ast_log(LOG_ERROR, "Data Buffer Size Exceeded!\n");
398                                 break;
399                         } else
400                                 total++;
401                 }
402         }
403
404         return total;
405 }
406
407
408 void ast_cdr_free_vars(struct ast_cdr *cdr, int recur)
409 {
410
411         /* clear variables */
412         for (; cdr; cdr = recur ? cdr->next : NULL) {
413                 struct ast_var_t *vardata;
414                 struct varshead *headp = &cdr->varshead;
415                 while ((vardata = AST_LIST_REMOVE_HEAD(headp, entries)))
416                         ast_var_delete(vardata);
417         }
418 }
419
420 /*! \brief  print a warning if cdr already posted */
421 static void check_post(struct ast_cdr *cdr)
422 {
423         if (!cdr)
424                 return;
425         if (ast_test_flag(cdr, AST_CDR_FLAG_POSTED))
426                 ast_log(LOG_NOTICE, "CDR on channel '%s' already posted\n", S_OR(cdr->channel, "<unknown>"));
427 }
428
429 /*! \brief  print a warning if cdr already started */
430 static void check_start(struct ast_cdr *cdr)
431 {
432         if (!cdr)
433                 return;
434         if (!ast_tvzero(cdr->start))
435                 ast_log(LOG_NOTICE, "CDR on channel '%s' already started\n", S_OR(cdr->channel, "<unknown>"));
436 }
437
438 void ast_cdr_free(struct ast_cdr *cdr)
439 {
440
441         while (cdr) {
442                 struct ast_cdr *next = cdr->next;
443                 char *chan = S_OR(cdr->channel, "<unknown>");
444                 if (!ast_test_flag(cdr, AST_CDR_FLAG_POSTED) && !ast_test_flag(cdr, AST_CDR_FLAG_POST_DISABLED))
445                         ast_log(LOG_NOTICE, "CDR on channel '%s' not posted\n", chan);
446                 if (ast_tvzero(cdr->end))
447                         ast_log(LOG_NOTICE, "CDR on channel '%s' lacks end\n", chan);
448                 if (ast_tvzero(cdr->start))
449                         ast_log(LOG_NOTICE, "CDR on channel '%s' lacks start\n", chan);
450
451                 ast_cdr_free_vars(cdr, 0);
452                 free(cdr);
453                 cdr = next;
454         }
455 }
456
457 /*! \brief the same as a cdr_free call, only with no checks; just get rid of it */
458 void ast_cdr_discard(struct ast_cdr *cdr)
459 {
460         while (cdr) {
461                 struct ast_cdr *next = cdr->next;
462
463                 ast_cdr_free_vars(cdr, 0);
464                 free(cdr);
465                 cdr = next;
466         }
467 }
468
469 struct ast_cdr *ast_cdr_alloc(void)
470 {
471         struct ast_cdr *x = ast_calloc(1, sizeof(struct ast_cdr));
472         if (!x)
473                 ast_log(LOG_ERROR,"Allocation Failure for a CDR!\n");
474         return x;
475 }
476
477 void ast_cdr_merge(struct ast_cdr *to, struct ast_cdr *from)
478 {
479         if (!to || !from)
480                 return;
481         if (!ast_tvzero(from->start)) {
482                 if (!ast_tvzero(to->start)) {
483                         if (ast_tvcmp(to->start, from->start) > 0 ) {
484                                 to->start = from->start; /* use the earliest time */
485                                 from->start = ast_tv(0,0); /* we actively "steal" these values */
486                         } else {
487                                 ast_log(LOG_WARNING,"CDR start disagreement for %s\n", to->channel);
488                         }
489                 } else {
490                         to->start = from->start;
491                         from->start = ast_tv(0,0); /* we actively "steal" these values */
492                 }
493         }
494         if (!ast_tvzero(from->end)) {
495                 if (!ast_tvzero(to->end)) {
496                         if (ast_tvcmp(to->end, from->end) < 0 ) {
497                                 to->end = from->end; /* use the latest time */
498                                 from->end = ast_tv(0,0); /* we actively "steal" these values */
499                         } else {
500                                 ast_log(LOG_WARNING,"CDR end disagreement for %s\n", to->channel);
501                         }
502                 } else {
503                         to->end = from->end;
504                         from->end = ast_tv(0,0); /* we actively "steal" these values */
505                         to->duration = to->end.tv_sec - to->start.tv_sec;
506                         to->billsec = ast_tvzero(to->answer) ? 0 : to->end.tv_sec - to->answer.tv_sec;
507                 }
508         }
509         if (!ast_tvzero(from->answer)) {
510                 if (!ast_tvzero(to->answer)) {
511                         if (ast_tvcmp(to->answer, from->answer) > 0 ) {
512                                 to->answer = from->answer; /* use the earliest time */
513                                 from->answer = ast_tv(0,0); /* we actively "steal" these values */
514                         } else {
515                                 ast_log(LOG_WARNING,"CDR answer disagreement for %s\n", to->channel);
516                         }
517                 } else {
518                         to->answer = from->answer;
519                         from->answer = ast_tv(0,0); /* we actively "steal" these values */
520                 }
521         }
522         if (to->disposition < from->disposition) {
523                 to->disposition = from->disposition;
524                 from->disposition = AST_CDR_NOANSWER;
525         }
526         if (ast_strlen_zero(to->lastapp) && !ast_strlen_zero(from->lastapp)) {
527                 ast_copy_string(to->lastapp, from->lastapp, sizeof(to->lastapp));
528                 from->lastapp[0] = 0; /* theft */
529         }
530         if (ast_strlen_zero(to->lastdata) && !ast_strlen_zero(from->lastdata)) {
531                 ast_copy_string(to->lastdata, from->lastdata, sizeof(to->lastdata));
532                 from->lastdata[0] = 0; /* theft */
533         }
534         if (ast_strlen_zero(to->dcontext) && !ast_strlen_zero(from->dcontext)) {
535                 ast_copy_string(to->dcontext, from->dcontext, sizeof(to->dcontext));
536                 from->dcontext[0] = 0; /* theft */
537         }
538         if (ast_strlen_zero(to->dstchannel) && !ast_strlen_zero(from->dstchannel)) {
539                 ast_copy_string(to->dstchannel, from->dstchannel, sizeof(to->dstchannel));
540                 from->dstchannel[0] = 0; /* theft */
541         }
542         if (ast_strlen_zero(to->channel) && !ast_strlen_zero(from->channel)) {
543                 ast_copy_string(to->channel, from->channel, sizeof(to->channel));
544                 from->channel[0] = 0; /* theft */
545         }
546         if (ast_strlen_zero(to->src) && !ast_strlen_zero(from->src)) {
547                 ast_copy_string(to->src, from->src, sizeof(to->src));
548                 from->src[0] = 0; /* theft */
549         }
550         if (ast_strlen_zero(to->dst) && !ast_strlen_zero(from->dst)) {
551                 ast_copy_string(to->dst, from->dst, sizeof(to->dst));
552                 from->dst[0] = 0; /* theft */
553         }
554         if (!to->amaflags && from->amaflags) {
555                 to->amaflags = from->amaflags;
556                 from->amaflags = 0; /* theft */
557         }
558         if (ast_strlen_zero(to->accountcode) && !ast_strlen_zero(from->accountcode)) {
559                 ast_copy_string(to->accountcode, from->accountcode, sizeof(to->accountcode));
560                 from->accountcode[0] = 0; /* theft */
561         }
562         if (ast_strlen_zero(to->userfield) && !ast_strlen_zero(from->userfield)) {
563                 ast_copy_string(to->userfield, from->userfield, sizeof(to->userfield));
564                 from->userfield[0] = 0; /* theft */
565         }
566         /* flags, varsead, ? */
567 }
568
569 void ast_cdr_start(struct ast_cdr *cdr)
570 {
571         char *chan; 
572
573         for (; cdr; cdr = cdr->next) {
574                 if (!ast_test_flag(cdr, AST_CDR_FLAG_LOCKED)) {
575                         chan = S_OR(cdr->channel, "<unknown>");
576                         check_post(cdr);
577                         check_start(cdr);
578                         cdr->start = ast_tvnow();
579                 }
580         }
581 }
582
583 void ast_cdr_answer(struct ast_cdr *cdr)
584 {
585
586         for (; cdr; cdr = cdr->next) {
587                 check_post(cdr);
588                 if (cdr->disposition < AST_CDR_ANSWERED)
589                         cdr->disposition = AST_CDR_ANSWERED;
590                 if (ast_tvzero(cdr->answer))
591                         cdr->answer = ast_tvnow();
592         }
593 }
594
595 void ast_cdr_busy(struct ast_cdr *cdr)
596 {
597
598         for (; cdr; cdr = cdr->next) {
599                 if (!ast_test_flag(cdr, AST_CDR_FLAG_LOCKED)) {
600                         check_post(cdr);
601                         if (cdr->disposition < AST_CDR_BUSY)
602                                 cdr->disposition = AST_CDR_BUSY;
603                 }
604         }
605 }
606
607 void ast_cdr_failed(struct ast_cdr *cdr)
608 {
609         for (; cdr; cdr = cdr->next) {
610                 check_post(cdr);
611                 if (!ast_test_flag(cdr, AST_CDR_FLAG_LOCKED)) {
612                         if (cdr->disposition < AST_CDR_FAILED)
613                                 cdr->disposition = AST_CDR_FAILED;
614                 }
615         }
616 }
617
618 int ast_cdr_disposition(struct ast_cdr *cdr, int cause)
619 {
620         int res = 0;
621
622         for (; cdr; cdr = cdr->next) {
623                 switch (cause) {
624                 case AST_CAUSE_BUSY:
625                         ast_cdr_busy(cdr);
626                         break;
627                 case AST_CAUSE_FAILURE:
628                         ast_cdr_failed(cdr);
629                         break;
630                 case AST_CAUSE_NORMAL:
631                         break;
632                 case AST_CAUSE_NOTDEFINED:
633                         res = -1;
634                         break;
635                 default:
636                         res = -1;
637                         ast_log(LOG_WARNING, "Cause not handled\n");
638                 }
639         }
640         return res;
641 }
642
643 void ast_cdr_setdestchan(struct ast_cdr *cdr, const char *chann)
644 {
645         for (; cdr; cdr = cdr->next) {
646                 check_post(cdr);
647                 if (!ast_test_flag(cdr, AST_CDR_FLAG_LOCKED))
648                         ast_copy_string(cdr->dstchannel, chann, sizeof(cdr->dstchannel));
649         }
650 }
651
652 void ast_cdr_setapp(struct ast_cdr *cdr, char *app, char *data)
653 {
654
655         for (; cdr; cdr = cdr->next) {
656                 if (!ast_test_flag(cdr, AST_CDR_FLAG_LOCKED)) {
657                         check_post(cdr);
658                         if (!app)
659                                 app = "";
660                         ast_copy_string(cdr->lastapp, app, sizeof(cdr->lastapp));
661                         if (!data)
662                                 data = "";
663                         ast_copy_string(cdr->lastdata, data, sizeof(cdr->lastdata));
664                 }
665         }
666 }
667
668 /* set cid info for one record */
669 static void set_one_cid(struct ast_cdr *cdr, struct ast_channel *c)
670 {
671         /* Grab source from ANI or normal Caller*ID */
672         const char *num = S_OR(c->cid.cid_ani, c->cid.cid_num);
673         if (!cdr)
674                 return;
675         if (!ast_strlen_zero(c->cid.cid_name)) {
676                 if (!ast_strlen_zero(num))      /* both name and number */
677                         snprintf(cdr->clid, sizeof(cdr->clid), "\"%s\" <%s>", c->cid.cid_name, num);
678                 else                            /* only name */
679                         ast_copy_string(cdr->clid, c->cid.cid_name, sizeof(cdr->clid));
680         } else if (!ast_strlen_zero(num)) {     /* only number */
681                 ast_copy_string(cdr->clid, num, sizeof(cdr->clid));
682         } else {                                /* nothing known */
683                 cdr->clid[0] = '\0';
684         }
685         ast_copy_string(cdr->src, S_OR(num, ""), sizeof(cdr->src));
686
687 }
688 int ast_cdr_setcid(struct ast_cdr *cdr, struct ast_channel *c)
689 {
690         for (; cdr; cdr = cdr->next) {
691                 if (ast_test_flag(cdr, AST_CDR_FLAG_LOCKED))
692                         set_one_cid(cdr, c);
693         }
694         return 0;
695 }
696
697 int ast_cdr_init(struct ast_cdr *cdr, struct ast_channel *c)
698 {
699         char *chan;
700
701         for ( ; cdr ; cdr = cdr->next) {
702                 if (!ast_test_flag(cdr, AST_CDR_FLAG_LOCKED)) {
703                         chan = S_OR(cdr->channel, "<unknown>");
704                         if (!ast_strlen_zero(cdr->channel)) 
705                                 ast_log(LOG_WARNING, "CDR already initialized on '%s'\n", chan); 
706                         ast_copy_string(cdr->channel, c->name, sizeof(cdr->channel));
707                         set_one_cid(cdr, c);
708
709                         cdr->disposition = (c->_state == AST_STATE_UP) ?  AST_CDR_ANSWERED : AST_CDR_NOANSWER;
710                         cdr->amaflags = c->amaflags ? c->amaflags :  ast_default_amaflags;
711                         ast_copy_string(cdr->accountcode, c->accountcode, sizeof(cdr->accountcode));
712                         /* Destination information */
713                         ast_copy_string(cdr->dst, c->exten, sizeof(cdr->dst));
714                         ast_copy_string(cdr->dcontext, c->context, sizeof(cdr->dcontext));
715                         /* Unique call identifier */
716                         ast_copy_string(cdr->uniqueid, c->uniqueid, sizeof(cdr->uniqueid));
717                 }
718         }
719         return 0;
720 }
721
722 void ast_cdr_end(struct ast_cdr *cdr)
723 {
724         for ( ; cdr ; cdr = cdr->next) {
725                 check_post(cdr);
726                 if (ast_tvzero(cdr->end))
727                         cdr->end = ast_tvnow();
728                 if (ast_tvzero(cdr->start)) {
729                         ast_log(LOG_WARNING, "CDR on channel '%s' has not started\n", S_OR(cdr->channel, "<unknown>"));
730                         cdr->disposition = AST_CDR_FAILED;
731                 } else
732                         cdr->duration = cdr->end.tv_sec - cdr->start.tv_sec;
733                 cdr->billsec = ast_tvzero(cdr->answer) ? 0 : cdr->end.tv_sec - cdr->answer.tv_sec;
734         }
735 }
736
737 char *ast_cdr_disp2str(int disposition)
738 {
739         switch (disposition) {
740         case AST_CDR_NOANSWER:
741                 return "NO ANSWER";
742         case AST_CDR_FAILED:
743                 return "FAILED";                
744         case AST_CDR_BUSY:
745                 return "BUSY";          
746         case AST_CDR_ANSWERED:
747                 return "ANSWERED";
748         }
749         return "UNKNOWN";
750 }
751
752 /*! Converts AMA flag to printable string */
753 char *ast_cdr_flags2str(int flag)
754 {
755         switch (flag) {
756         case AST_CDR_OMIT:
757                 return "OMIT";
758         case AST_CDR_BILLING:
759                 return "BILLING";
760         case AST_CDR_DOCUMENTATION:
761                 return "DOCUMENTATION";
762         }
763         return "Unknown";
764 }
765
766 int ast_cdr_setaccount(struct ast_channel *chan, const char *account)
767 {
768         struct ast_cdr *cdr = chan->cdr;
769
770         ast_string_field_set(chan, accountcode, account);
771         for ( ; cdr ; cdr = cdr->next) {
772                 if (!ast_test_flag(cdr, AST_CDR_FLAG_LOCKED))
773                         ast_copy_string(cdr->accountcode, chan->accountcode, sizeof(cdr->accountcode));
774         }
775         return 0;
776 }
777
778 int ast_cdr_setamaflags(struct ast_channel *chan, const char *flag)
779 {
780         struct ast_cdr *cdr;
781         int newflag = ast_cdr_amaflags2int(flag);
782         if (newflag) {
783                 for (cdr = chan->cdr; cdr; cdr = cdr->next)
784                         cdr->amaflags = newflag;
785         }
786
787         return 0;
788 }
789
790 int ast_cdr_setuserfield(struct ast_channel *chan, const char *userfield)
791 {
792         struct ast_cdr *cdr = chan->cdr;
793
794         for ( ; cdr ; cdr = cdr->next) {
795                 if (!ast_test_flag(cdr, AST_CDR_FLAG_LOCKED)) 
796                         ast_copy_string(cdr->userfield, userfield, sizeof(cdr->userfield));
797         }
798
799         return 0;
800 }
801
802 int ast_cdr_appenduserfield(struct ast_channel *chan, const char *userfield)
803 {
804         struct ast_cdr *cdr = chan->cdr;
805
806         for ( ; cdr ; cdr = cdr->next) {
807                 int len = strlen(cdr->userfield);
808
809                 if (!ast_test_flag(cdr, AST_CDR_FLAG_LOCKED))
810                         ast_copy_string(cdr->userfield + len, userfield, sizeof(cdr->userfield) - len);
811         }
812
813         return 0;
814 }
815
816 int ast_cdr_update(struct ast_channel *c)
817 {
818         struct ast_cdr *cdr = c->cdr;
819
820         for ( ; cdr ; cdr = cdr->next) {
821                 if (!ast_test_flag(cdr, AST_CDR_FLAG_LOCKED)) {
822                         set_one_cid(cdr, c);
823
824                         /* Copy account code et-al */   
825                         ast_copy_string(cdr->accountcode, c->accountcode, sizeof(cdr->accountcode));
826                         /* Destination information */ /* XXX privilege macro* ? */
827                         ast_copy_string(cdr->dst, S_OR(c->macroexten, c->exten), sizeof(cdr->dst));
828                         ast_copy_string(cdr->dcontext, S_OR(c->macrocontext, c->context), sizeof(cdr->dcontext));
829                 }
830         }
831
832         return 0;
833 }
834
835 int ast_cdr_amaflags2int(const char *flag)
836 {
837         if (!strcasecmp(flag, "default"))
838                 return 0;
839         if (!strcasecmp(flag, "omit"))
840                 return AST_CDR_OMIT;
841         if (!strcasecmp(flag, "billing"))
842                 return AST_CDR_BILLING;
843         if (!strcasecmp(flag, "documentation"))
844                 return AST_CDR_DOCUMENTATION;
845         return -1;
846 }
847
848 static void post_cdr(struct ast_cdr *cdr)
849 {
850         char *chan;
851         struct ast_cdr_beitem *i;
852
853         for ( ; cdr ; cdr = cdr->next) {
854                 chan = S_OR(cdr->channel, "<unknown>");
855                 check_post(cdr);
856                 if (ast_tvzero(cdr->end))
857                         ast_log(LOG_WARNING, "CDR on channel '%s' lacks end\n", chan);
858                 if (ast_tvzero(cdr->start))
859                         ast_log(LOG_WARNING, "CDR on channel '%s' lacks start\n", chan);
860                 ast_set_flag(cdr, AST_CDR_FLAG_POSTED);
861                 if (ast_test_flag(cdr, AST_CDR_FLAG_POST_DISABLED))
862                         continue;
863                 AST_LIST_LOCK(&be_list);
864                 AST_LIST_TRAVERSE(&be_list, i, list) {
865                         i->be(cdr);
866                 }
867                 AST_LIST_UNLOCK(&be_list);
868         }
869 }
870
871 void ast_cdr_reset(struct ast_cdr *cdr, struct ast_flags *_flags)
872 {
873         struct ast_cdr *dup;
874         struct ast_flags flags = { 0 };
875
876         if (_flags)
877                 ast_copy_flags(&flags, _flags, AST_FLAGS_ALL);
878
879         for ( ; cdr ; cdr = cdr->next) {
880                 /* Detach if post is requested */
881                 if (ast_test_flag(&flags, AST_CDR_FLAG_LOCKED) || !ast_test_flag(cdr, AST_CDR_FLAG_LOCKED)) {
882                         if (ast_test_flag(&flags, AST_CDR_FLAG_POSTED)) {
883                                 ast_cdr_end(cdr);
884                                 if ((dup = ast_cdr_dup(cdr))) {
885                                         ast_cdr_detach(dup);
886                                 }
887                                 ast_set_flag(cdr, AST_CDR_FLAG_POSTED);
888                         }
889
890                         /* clear variables */
891                         if (!ast_test_flag(&flags, AST_CDR_FLAG_KEEP_VARS)) {
892                                 ast_cdr_free_vars(cdr, 0);
893                         }
894
895                         /* Reset to initial state */
896                         ast_clear_flag(cdr, AST_FLAGS_ALL);     
897                         memset(&cdr->start, 0, sizeof(cdr->start));
898                         memset(&cdr->end, 0, sizeof(cdr->end));
899                         memset(&cdr->answer, 0, sizeof(cdr->answer));
900                         cdr->billsec = 0;
901                         cdr->duration = 0;
902                         ast_cdr_start(cdr);
903                         cdr->disposition = AST_CDR_NOANSWER;
904                 }
905         }
906 }
907
908 struct ast_cdr *ast_cdr_append(struct ast_cdr *cdr, struct ast_cdr *newcdr) 
909 {
910         struct ast_cdr *ret;
911
912         if (cdr) {
913                 ret = cdr;
914
915                 while (cdr->next)
916                         cdr = cdr->next;
917                 cdr->next = newcdr;
918         } else {
919                 ret = newcdr;
920         }
921
922         return ret;
923 }
924
925 /*! \note Don't call without cdr_batch_lock */
926 static void reset_batch(void)
927 {
928         batch->size = 0;
929         batch->head = NULL;
930         batch->tail = NULL;
931 }
932
933 /*! \note Don't call without cdr_batch_lock */
934 static int init_batch(void)
935 {
936         /* This is the single meta-batch used to keep track of all CDRs during the entire life of the program */
937         if (!(batch = ast_malloc(sizeof(*batch))))
938                 return -1;
939
940         reset_batch();
941
942         return 0;
943 }
944
945 static void *do_batch_backend_process(void *data)
946 {
947         struct ast_cdr_batch_item *processeditem;
948         struct ast_cdr_batch_item *batchitem = data;
949
950         /* Push each CDR into storage mechanism(s) and free all the memory */
951         while (batchitem) {
952                 post_cdr(batchitem->cdr);
953                 ast_cdr_free(batchitem->cdr);
954                 processeditem = batchitem;
955                 batchitem = batchitem->next;
956                 free(processeditem);
957         }
958
959         return NULL;
960 }
961
962 void ast_cdr_submit_batch(int shutdown)
963 {
964         struct ast_cdr_batch_item *oldbatchitems = NULL;
965         pthread_attr_t attr;
966         pthread_t batch_post_thread = AST_PTHREADT_NULL;
967
968         /* if there's no batch, or no CDRs in the batch, then there's nothing to do */
969         if (!batch || !batch->head)
970                 return;
971
972         /* move the old CDRs aside, and prepare a new CDR batch */
973         ast_mutex_lock(&cdr_batch_lock);
974         oldbatchitems = batch->head;
975         reset_batch();
976         ast_mutex_unlock(&cdr_batch_lock);
977
978         /* if configured, spawn a new thread to post these CDRs,
979            also try to save as much as possible if we are shutting down safely */
980         if (batchscheduleronly || shutdown) {
981                 if (option_debug)
982                         ast_log(LOG_DEBUG, "CDR single-threaded batch processing begins now\n");
983                 do_batch_backend_process(oldbatchitems);
984         } else {
985                 pthread_attr_init(&attr);
986                 pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED);
987                 if (ast_pthread_create_background(&batch_post_thread, &attr, do_batch_backend_process, oldbatchitems)) {
988                         ast_log(LOG_WARNING, "CDR processing thread could not detach, now trying in this thread\n");
989                         do_batch_backend_process(oldbatchitems);
990                 } else {
991                         if (option_debug)
992                                 ast_log(LOG_DEBUG, "CDR multi-threaded batch processing begins now\n");
993                 }
994                 pthread_attr_destroy(&attr);
995         }
996 }
997
998 static int submit_scheduled_batch(void *data)
999 {
1000         ast_cdr_submit_batch(0);
1001         /* manually reschedule from this point in time */
1002         cdr_sched = ast_sched_add(sched, batchtime * 1000, submit_scheduled_batch, NULL);
1003         /* returning zero so the scheduler does not automatically reschedule */
1004         return 0;
1005 }
1006
1007 static void submit_unscheduled_batch(void)
1008 {
1009         /* this is okay since we are not being called from within the scheduler */
1010         if (cdr_sched > -1)
1011                 ast_sched_del(sched, cdr_sched);
1012         /* schedule the submission to occur ASAP (1 ms) */
1013         cdr_sched = ast_sched_add(sched, 1, submit_scheduled_batch, NULL);
1014         /* signal the do_cdr thread to wakeup early and do some work (that lazy thread ;) */
1015         ast_mutex_lock(&cdr_pending_lock);
1016         ast_cond_signal(&cdr_pending_cond);
1017         ast_mutex_unlock(&cdr_pending_lock);
1018 }
1019
1020 void ast_cdr_detach(struct ast_cdr *cdr)
1021 {
1022         struct ast_cdr_batch_item *newtail;
1023         int curr;
1024
1025         if (!cdr)
1026                 return;
1027
1028         /* maybe they disabled CDR stuff completely, so just drop it */
1029         if (!enabled) {
1030                 if (option_debug)
1031                         ast_log(LOG_DEBUG, "Dropping CDR !\n");
1032                 ast_set_flag(cdr, AST_CDR_FLAG_POST_DISABLED);
1033                 ast_cdr_free(cdr);
1034                 return;
1035         }
1036
1037         /* post stuff immediately if we are not in batch mode, this is legacy behaviour */
1038         if (!batchmode) {
1039                 post_cdr(cdr);
1040                 ast_cdr_free(cdr);
1041                 return;
1042         }
1043
1044         /* otherwise, each CDR gets put into a batch list (at the end) */
1045         if (option_debug)
1046                 ast_log(LOG_DEBUG, "CDR detaching from this thread\n");
1047
1048         /* we'll need a new tail for every CDR */
1049         if (!(newtail = ast_calloc(1, sizeof(*newtail)))) {
1050                 post_cdr(cdr);
1051                 ast_cdr_free(cdr);
1052                 return;
1053         }
1054
1055         /* don't traverse a whole list (just keep track of the tail) */
1056         ast_mutex_lock(&cdr_batch_lock);
1057         if (!batch)
1058                 init_batch();
1059         if (!batch->head) {
1060                 /* new batch is empty, so point the head at the new tail */
1061                 batch->head = newtail;
1062         } else {
1063                 /* already got a batch with something in it, so just append a new tail */
1064                 batch->tail->next = newtail;
1065         }
1066         newtail->cdr = cdr;
1067         batch->tail = newtail;
1068         curr = batch->size++;
1069         ast_mutex_unlock(&cdr_batch_lock);
1070
1071         /* if we have enough stuff to post, then do it */
1072         if (curr >= (batchsize - 1))
1073                 submit_unscheduled_batch();
1074 }
1075
1076 static void *do_cdr(void *data)
1077 {
1078         struct timespec timeout;
1079         int schedms;
1080         int numevents = 0;
1081
1082         for (;;) {
1083                 struct timeval now;
1084                 schedms = ast_sched_wait(sched);
1085                 /* this shouldn't happen, but provide a 1 second default just in case */
1086                 if (schedms <= 0)
1087                         schedms = 1000;
1088                 now = ast_tvadd(ast_tvnow(), ast_samp2tv(schedms, 1000));
1089                 timeout.tv_sec = now.tv_sec;
1090                 timeout.tv_nsec = now.tv_usec * 1000;
1091                 /* prevent stuff from clobbering cdr_pending_cond, then wait on signals sent to it until the timeout expires */
1092                 ast_mutex_lock(&cdr_pending_lock);
1093                 ast_cond_timedwait(&cdr_pending_cond, &cdr_pending_lock, &timeout);
1094                 numevents = ast_sched_runq(sched);
1095                 ast_mutex_unlock(&cdr_pending_lock);
1096                 if (option_debug > 1)
1097                         ast_log(LOG_DEBUG, "Processed %d scheduled CDR batches from the run queue\n", numevents);
1098         }
1099
1100         return NULL;
1101 }
1102
1103 static int handle_cli_status(int fd, int argc, char *argv[])
1104 {
1105         struct ast_cdr_beitem *beitem=NULL;
1106         int cnt=0;
1107         long nextbatchtime=0;
1108
1109         if (argc > 2)
1110                 return RESULT_SHOWUSAGE;
1111
1112         ast_cli(fd, "CDR logging: %s\n", enabled ? "enabled" : "disabled");
1113         ast_cli(fd, "CDR mode: %s\n", batchmode ? "batch" : "simple");
1114         if (enabled) {
1115                 if (batchmode) {
1116                         if (batch)
1117                                 cnt = batch->size;
1118                         if (cdr_sched > -1)
1119                                 nextbatchtime = ast_sched_when(sched, cdr_sched);
1120                         ast_cli(fd, "CDR safe shut down: %s\n", batchsafeshutdown ? "enabled" : "disabled");
1121                         ast_cli(fd, "CDR batch threading model: %s\n", batchscheduleronly ? "scheduler only" : "scheduler plus separate threads");
1122                         ast_cli(fd, "CDR current batch size: %d record%s\n", cnt, ESS(cnt));
1123                         ast_cli(fd, "CDR maximum batch size: %d record%s\n", batchsize, ESS(batchsize));
1124                         ast_cli(fd, "CDR maximum batch time: %d second%s\n", batchtime, ESS(batchtime));
1125                         ast_cli(fd, "CDR next scheduled batch processing time: %ld second%s\n", nextbatchtime, ESS(nextbatchtime));
1126                 }
1127                 AST_LIST_LOCK(&be_list);
1128                 AST_LIST_TRAVERSE(&be_list, beitem, list) {
1129                         ast_cli(fd, "CDR registered backend: %s\n", beitem->name);
1130                 }
1131                 AST_LIST_UNLOCK(&be_list);
1132         }
1133
1134         return 0;
1135 }
1136
1137 static int handle_cli_submit(int fd, int argc, char *argv[])
1138 {
1139         if (argc > 2)
1140                 return RESULT_SHOWUSAGE;
1141
1142         submit_unscheduled_batch();
1143         ast_cli(fd, "Submitted CDRs to backend engines for processing.  This may take a while.\n");
1144
1145         return 0;
1146 }
1147
1148 static struct ast_cli_entry cli_submit = {
1149         { "cdr", "submit", NULL },
1150         handle_cli_submit, "Posts all pending batched CDR data",
1151         "Usage: cdr submit\n"
1152         "       Posts all pending batched CDR data to the configured CDR backend engine modules.\n"
1153 };
1154
1155 static struct ast_cli_entry cli_status = {
1156         { "cdr", "status", NULL },
1157         handle_cli_status, "Display the CDR status",
1158         "Usage: cdr status\n"
1159         "       Displays the Call Detail Record engine system status.\n"
1160 };
1161
1162 static int do_reload(void)
1163 {
1164         struct ast_config *config;
1165         const char *enabled_value;
1166         const char *batched_value;
1167         const char *scheduleronly_value;
1168         const char *batchsafeshutdown_value;
1169         const char *size_value;
1170         const char *time_value;
1171         const char *end_before_h_value;
1172         int cfg_size;
1173         int cfg_time;
1174         int was_enabled;
1175         int was_batchmode;
1176         int res=0;
1177
1178         ast_mutex_lock(&cdr_batch_lock);
1179
1180         batchsize = BATCH_SIZE_DEFAULT;
1181         batchtime = BATCH_TIME_DEFAULT;
1182         batchscheduleronly = BATCH_SCHEDULER_ONLY_DEFAULT;
1183         batchsafeshutdown = BATCH_SAFE_SHUTDOWN_DEFAULT;
1184         was_enabled = enabled;
1185         was_batchmode = batchmode;
1186         enabled = 1;
1187         batchmode = 0;
1188
1189         /* don't run the next scheduled CDR posting while reloading */
1190         if (cdr_sched > -1)
1191                 ast_sched_del(sched, cdr_sched);
1192
1193         if ((config = ast_config_load("cdr.conf"))) {
1194                 if ((enabled_value = ast_variable_retrieve(config, "general", "enable"))) {
1195                         enabled = ast_true(enabled_value);
1196                 }
1197                 if ((batched_value = ast_variable_retrieve(config, "general", "batch"))) {
1198                         batchmode = ast_true(batched_value);
1199                 }
1200                 if ((scheduleronly_value = ast_variable_retrieve(config, "general", "scheduleronly"))) {
1201                         batchscheduleronly = ast_true(scheduleronly_value);
1202                 }
1203                 if ((batchsafeshutdown_value = ast_variable_retrieve(config, "general", "safeshutdown"))) {
1204                         batchsafeshutdown = ast_true(batchsafeshutdown_value);
1205                 }
1206                 if ((size_value = ast_variable_retrieve(config, "general", "size"))) {
1207                         if (sscanf(size_value, "%d", &cfg_size) < 1)
1208                                 ast_log(LOG_WARNING, "Unable to convert '%s' to a numeric value.\n", size_value);
1209                         else if (size_value < 0)
1210                                 ast_log(LOG_WARNING, "Invalid maximum batch size '%d' specified, using default\n", cfg_size);
1211                         else
1212                                 batchsize = cfg_size;
1213                 }
1214                 if ((time_value = ast_variable_retrieve(config, "general", "time"))) {
1215                         if (sscanf(time_value, "%d", &cfg_time) < 1)
1216                                 ast_log(LOG_WARNING, "Unable to convert '%s' to a numeric value.\n", time_value);
1217                         else if (time_value < 0)
1218                                 ast_log(LOG_WARNING, "Invalid maximum batch time '%d' specified, using default\n", cfg_time);
1219                         else
1220                                 batchtime = cfg_time;
1221                 }
1222                 if ((end_before_h_value = ast_variable_retrieve(config, "general", "endbeforehexten")))
1223                         ast_set2_flag(&ast_options, ast_true(end_before_h_value), AST_OPT_FLAG_END_CDR_BEFORE_H_EXTEN);
1224         }
1225
1226         if (enabled && !batchmode) {
1227                 ast_log(LOG_NOTICE, "CDR simple logging enabled.\n");
1228         } else if (enabled && batchmode) {
1229                 cdr_sched = ast_sched_add(sched, batchtime * 1000, submit_scheduled_batch, NULL);
1230                 ast_log(LOG_NOTICE, "CDR batch mode logging enabled, first of either size %d or time %d seconds.\n", batchsize, batchtime);
1231         } else {
1232                 ast_log(LOG_NOTICE, "CDR logging disabled, data will be lost.\n");
1233         }
1234
1235         /* if this reload enabled the CDR batch mode, create the background thread
1236            if it does not exist */
1237         if (enabled && batchmode && (!was_enabled || !was_batchmode) && (cdr_thread == AST_PTHREADT_NULL)) {
1238                 ast_cond_init(&cdr_pending_cond, NULL);
1239                 if (ast_pthread_create_background(&cdr_thread, NULL, do_cdr, NULL) < 0) {
1240                         ast_log(LOG_ERROR, "Unable to start CDR thread.\n");
1241                         ast_sched_del(sched, cdr_sched);
1242                 } else {
1243                         ast_cli_register(&cli_submit);
1244                         ast_register_atexit(ast_cdr_engine_term);
1245                         res = 0;
1246                 }
1247         /* if this reload disabled the CDR and/or batch mode and there is a background thread,
1248            kill it */
1249         } else if (((!enabled && was_enabled) || (!batchmode && was_batchmode)) && (cdr_thread != AST_PTHREADT_NULL)) {
1250                 /* wake up the thread so it will exit */
1251                 pthread_cancel(cdr_thread);
1252                 pthread_kill(cdr_thread, SIGURG);
1253                 pthread_join(cdr_thread, NULL);
1254                 cdr_thread = AST_PTHREADT_NULL;
1255                 ast_cond_destroy(&cdr_pending_cond);
1256                 ast_cli_unregister(&cli_submit);
1257                 ast_unregister_atexit(ast_cdr_engine_term);
1258                 res = 0;
1259                 /* if leaving batch mode, then post the CDRs in the batch,
1260                    and don't reschedule, since we are stopping CDR logging */
1261                 if (!batchmode && was_batchmode) {
1262                         ast_cdr_engine_term();
1263                 }
1264         } else {
1265                 res = 0;
1266         }
1267
1268         ast_mutex_unlock(&cdr_batch_lock);
1269         ast_config_destroy(config);
1270
1271         return res;
1272 }
1273
1274 int ast_cdr_engine_init(void)
1275 {
1276         int res;
1277
1278         sched = sched_context_create();
1279         if (!sched) {
1280                 ast_log(LOG_ERROR, "Unable to create schedule context.\n");
1281                 return -1;
1282         }
1283
1284         ast_cli_register(&cli_status);
1285
1286         res = do_reload();
1287         if (res) {
1288                 ast_mutex_lock(&cdr_batch_lock);
1289                 res = init_batch();
1290                 ast_mutex_unlock(&cdr_batch_lock);
1291         }
1292
1293         return res;
1294 }
1295
1296 /* \note This actually gets called a couple of times at shutdown.  Once, before we start
1297    hanging up channels, and then again, after the channel hangup timeout expires */
1298 void ast_cdr_engine_term(void)
1299 {
1300         ast_cdr_submit_batch(batchsafeshutdown);
1301 }
1302
1303 int ast_cdr_engine_reload(void)
1304 {
1305         return do_reload();
1306 }
1307