Merged revisions 60989 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 = NULL;
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 static void cdr_merge_vars(struct ast_cdr *to, struct ast_cdr *from)
478 {
479         struct ast_var_t *variablesfrom,*variablesto;
480         struct varshead *headpfrom = &to->varshead;
481         struct varshead *headpto = &from->varshead;
482         AST_LIST_TRAVERSE_SAFE_BEGIN(headpfrom, variablesfrom, entries) {
483                 /* for every var in from, stick it in to */
484                 const char *fromvarname, *fromvarval;
485                 const char *tovarname, *tovarval;
486                 fromvarname = ast_var_name(variablesfrom);
487                 fromvarval = ast_var_value(variablesfrom);
488                 tovarname = 0;
489
490                 /* now, quick see if that var is in the 'to' cdr already */
491                 AST_LIST_TRAVERSE(headpto, variablesto, entries) {
492
493                         /* now, quick see if that var is in the 'to' cdr already */
494                         if ( strcasecmp(fromvarname, ast_var_name(variablesto)) == 0 ) {
495                                 tovarname = ast_var_name(variablesto);
496                                 tovarval = ast_var_value(variablesto);
497                                 break;
498                         }
499                 }
500                 if (tovarname && strcasecmp(fromvarval,tovarval) != 0) {  /* this message here to see how irritating the userbase finds it */
501                         ast_log(LOG_NOTICE, "Merging CDR's: variable %s value %s dropped in favor of value %s\n", tovarname, fromvarval, tovarval);
502                         continue;
503                 } else if (tovarname && strcasecmp(fromvarval,tovarval) == 0) /* if they are the same, the job is done */
504                         continue;
505
506                 /*rip this var out of the from cdr, and stick it in the to cdr */
507                 AST_LIST_REMOVE_CURRENT(headpfrom, entries);
508                 AST_LIST_INSERT_HEAD(headpto, variablesfrom, entries);
509         }
510         AST_LIST_TRAVERSE_SAFE_END;
511 }
512
513 void ast_cdr_merge(struct ast_cdr *to, struct ast_cdr *from)
514 {
515         if (!to || !from)
516                 return;
517         
518         if (!ast_tvzero(from->start)) {
519                 if (!ast_tvzero(to->start)) {
520                         if (ast_tvcmp(to->start, from->start) > 0 ) {
521                                 to->start = from->start; /* use the earliest time */
522                                 from->start = ast_tv(0,0); /* we actively "steal" these values */
523                         }
524                         /* else nothing to do */
525                 } else {
526                         to->start = from->start;
527                         from->start = ast_tv(0,0); /* we actively "steal" these values */
528                 }
529         }
530         if (!ast_tvzero(from->answer)) {
531                 if (!ast_tvzero(to->answer)) {
532                         if (ast_tvcmp(to->answer, from->answer) > 0 ) {
533                                 to->answer = from->answer; /* use the earliest time */
534                                 from->answer = ast_tv(0,0); /* we actively "steal" these values */
535                         }
536                         /* we got the earliest answer time, so we'll settle for that? */
537                 } else {
538                         to->answer = from->answer;
539                         from->answer = ast_tv(0,0); /* we actively "steal" these values */
540                 }
541         }
542         if (!ast_tvzero(from->end)) {
543                 if (!ast_tvzero(to->end)) {
544                         if (ast_tvcmp(to->end, from->end) < 0 ) {
545                                 to->end = from->end; /* use the latest time */
546                                 from->end = ast_tv(0,0); /* we actively "steal" these values */
547                                 to->duration = to->end.tv_sec - to->start.tv_sec;  /* don't forget to update the duration, billsec, when we set end */
548                                 to->billsec = ast_tvzero(to->answer) ? 0 : to->end.tv_sec - to->answer.tv_sec;
549                         }
550                         /* else, nothing to do */
551                 } else {
552                         to->end = from->end;
553                         from->end = ast_tv(0,0); /* we actively "steal" these values */
554                         to->duration = to->end.tv_sec - to->start.tv_sec;
555                         to->billsec = ast_tvzero(to->answer) ? 0 : to->end.tv_sec - to->answer.tv_sec;
556                 }
557         }
558         if (to->disposition < from->disposition) {
559                 to->disposition = from->disposition;
560                 from->disposition = AST_CDR_NOANSWER;
561         }
562         if (ast_strlen_zero(to->lastapp) && !ast_strlen_zero(from->lastapp)) {
563                 ast_copy_string(to->lastapp, from->lastapp, sizeof(to->lastapp));
564                 from->lastapp[0] = 0; /* theft */
565         }
566         if (ast_strlen_zero(to->lastdata) && !ast_strlen_zero(from->lastdata)) {
567                 ast_copy_string(to->lastdata, from->lastdata, sizeof(to->lastdata));
568                 from->lastdata[0] = 0; /* theft */
569         }
570         if (ast_strlen_zero(to->dcontext) && !ast_strlen_zero(from->dcontext)) {
571                 ast_copy_string(to->dcontext, from->dcontext, sizeof(to->dcontext));
572                 from->dcontext[0] = 0; /* theft */
573         }
574         if (ast_strlen_zero(to->dstchannel) && !ast_strlen_zero(from->dstchannel)) {
575                 ast_copy_string(to->dstchannel, from->dstchannel, sizeof(to->dstchannel));
576                 from->dstchannel[0] = 0; /* theft */
577         }
578         if (ast_strlen_zero(to->channel) && !ast_strlen_zero(from->channel)) {
579                 ast_copy_string(to->channel, from->channel, sizeof(to->channel));
580                 from->channel[0] = 0; /* theft */
581         }
582         if (ast_strlen_zero(to->src) && !ast_strlen_zero(from->src)) {
583                 ast_copy_string(to->src, from->src, sizeof(to->src));
584                 from->src[0] = 0; /* theft */
585         }
586         if (ast_strlen_zero(to->dst) && !ast_strlen_zero(from->dst)) {
587                 ast_copy_string(to->dst, from->dst, sizeof(to->dst));
588                 from->dst[0] = 0; /* theft */
589         }
590         if (!to->amaflags && from->amaflags) {
591                 to->amaflags = from->amaflags;
592                 from->amaflags = 0; /* theft */
593         }
594         if (ast_strlen_zero(to->accountcode) && !ast_strlen_zero(from->accountcode)) {
595                 ast_copy_string(to->accountcode, from->accountcode, sizeof(to->accountcode));
596                 from->accountcode[0] = 0; /* theft */
597         }
598         if (ast_strlen_zero(to->userfield) && !ast_strlen_zero(from->userfield)) {
599                 ast_copy_string(to->userfield, from->userfield, sizeof(to->userfield));
600                 from->userfield[0] = 0; /* theft */
601         }
602         /* flags, varsead, ? */
603         cdr_merge_vars(from, to);
604
605         if (ast_test_flag(from, AST_CDR_FLAG_KEEP_VARS))
606                 ast_set_flag(to, AST_CDR_FLAG_KEEP_VARS);
607         if (ast_test_flag(from, AST_CDR_FLAG_POSTED))
608                 ast_set_flag(to, AST_CDR_FLAG_POSTED);
609         if (ast_test_flag(from, AST_CDR_FLAG_LOCKED))
610                 ast_set_flag(to, AST_CDR_FLAG_LOCKED);
611         if (ast_test_flag(from, AST_CDR_FLAG_CHILD))
612                 ast_set_flag(to, AST_CDR_FLAG_CHILD);
613         if (ast_test_flag(from, AST_CDR_FLAG_POST_DISABLED))
614                 ast_set_flag(to, AST_CDR_FLAG_POST_DISABLED);
615 }
616
617 void ast_cdr_start(struct ast_cdr *cdr)
618 {
619         char *chan; 
620
621         for (; cdr; cdr = cdr->next) {
622                 if (!ast_test_flag(cdr, AST_CDR_FLAG_LOCKED)) {
623                         chan = S_OR(cdr->channel, "<unknown>");
624                         check_post(cdr);
625                         check_start(cdr);
626                         cdr->start = ast_tvnow();
627                 }
628         }
629 }
630
631 void ast_cdr_answer(struct ast_cdr *cdr)
632 {
633
634         for (; cdr; cdr = cdr->next) {
635                 check_post(cdr);
636                 if (cdr->disposition < AST_CDR_ANSWERED)
637                         cdr->disposition = AST_CDR_ANSWERED;
638                 if (ast_tvzero(cdr->answer))
639                         cdr->answer = ast_tvnow();
640         }
641 }
642
643 void ast_cdr_busy(struct ast_cdr *cdr)
644 {
645
646         for (; cdr; cdr = cdr->next) {
647                 if (!ast_test_flag(cdr, AST_CDR_FLAG_LOCKED)) {
648                         check_post(cdr);
649                         if (cdr->disposition < AST_CDR_BUSY)
650                                 cdr->disposition = AST_CDR_BUSY;
651                 }
652         }
653 }
654
655 void ast_cdr_failed(struct ast_cdr *cdr)
656 {
657         for (; cdr; cdr = cdr->next) {
658                 check_post(cdr);
659                 if (!ast_test_flag(cdr, AST_CDR_FLAG_LOCKED)) {
660                         if (cdr->disposition < AST_CDR_FAILED)
661                                 cdr->disposition = AST_CDR_FAILED;
662                 }
663         }
664 }
665
666 int ast_cdr_disposition(struct ast_cdr *cdr, int cause)
667 {
668         int res = 0;
669
670         for (; cdr; cdr = cdr->next) {
671                 switch (cause) {
672                 case AST_CAUSE_BUSY:
673                         ast_cdr_busy(cdr);
674                         break;
675                 case AST_CAUSE_FAILURE:
676                         ast_cdr_failed(cdr);
677                         break;
678                 case AST_CAUSE_NORMAL:
679                         break;
680                 case AST_CAUSE_NOTDEFINED:
681                         res = -1;
682                         break;
683                 default:
684                         res = -1;
685                         ast_log(LOG_WARNING, "Cause not handled\n");
686                 }
687         }
688         return res;
689 }
690
691 void ast_cdr_setdestchan(struct ast_cdr *cdr, const char *chann)
692 {
693         for (; cdr; cdr = cdr->next) {
694                 check_post(cdr);
695                 if (!ast_test_flag(cdr, AST_CDR_FLAG_LOCKED))
696                         ast_copy_string(cdr->dstchannel, chann, sizeof(cdr->dstchannel));
697         }
698 }
699
700 void ast_cdr_setapp(struct ast_cdr *cdr, char *app, char *data)
701 {
702
703         for (; cdr; cdr = cdr->next) {
704                 if (!ast_test_flag(cdr, AST_CDR_FLAG_LOCKED)) {
705                         check_post(cdr);
706                         if (!app)
707                                 app = "";
708                         ast_copy_string(cdr->lastapp, app, sizeof(cdr->lastapp));
709                         if (!data)
710                                 data = "";
711                         ast_copy_string(cdr->lastdata, data, sizeof(cdr->lastdata));
712                 }
713         }
714 }
715
716 /* set cid info for one record */
717 static void set_one_cid(struct ast_cdr *cdr, struct ast_channel *c)
718 {
719         /* Grab source from ANI or normal Caller*ID */
720         const char *num = S_OR(c->cid.cid_ani, c->cid.cid_num);
721         if (!cdr)
722                 return;
723         if (!ast_strlen_zero(c->cid.cid_name)) {
724                 if (!ast_strlen_zero(num))      /* both name and number */
725                         snprintf(cdr->clid, sizeof(cdr->clid), "\"%s\" <%s>", c->cid.cid_name, num);
726                 else                            /* only name */
727                         ast_copy_string(cdr->clid, c->cid.cid_name, sizeof(cdr->clid));
728         } else if (!ast_strlen_zero(num)) {     /* only number */
729                 ast_copy_string(cdr->clid, num, sizeof(cdr->clid));
730         } else {                                /* nothing known */
731                 cdr->clid[0] = '\0';
732         }
733         ast_copy_string(cdr->src, S_OR(num, ""), sizeof(cdr->src));
734
735 }
736 int ast_cdr_setcid(struct ast_cdr *cdr, struct ast_channel *c)
737 {
738         for (; cdr; cdr = cdr->next) {
739                 if (ast_test_flag(cdr, AST_CDR_FLAG_LOCKED))
740                         set_one_cid(cdr, c);
741         }
742         return 0;
743 }
744
745 int ast_cdr_init(struct ast_cdr *cdr, struct ast_channel *c)
746 {
747         char *chan;
748
749         for ( ; cdr ; cdr = cdr->next) {
750                 if (!ast_test_flag(cdr, AST_CDR_FLAG_LOCKED)) {
751                         chan = S_OR(cdr->channel, "<unknown>");
752                         if (!ast_strlen_zero(cdr->channel)) 
753                                 ast_log(LOG_WARNING, "CDR already initialized on '%s'\n", chan); 
754                         ast_copy_string(cdr->channel, c->name, sizeof(cdr->channel));
755                         set_one_cid(cdr, c);
756
757                         cdr->disposition = (c->_state == AST_STATE_UP) ?  AST_CDR_ANSWERED : AST_CDR_NOANSWER;
758                         cdr->amaflags = c->amaflags ? c->amaflags :  ast_default_amaflags;
759                         ast_copy_string(cdr->accountcode, c->accountcode, sizeof(cdr->accountcode));
760                         /* Destination information */
761                         ast_copy_string(cdr->dst, c->exten, sizeof(cdr->dst));
762                         ast_copy_string(cdr->dcontext, c->context, sizeof(cdr->dcontext));
763                         /* Unique call identifier */
764                         ast_copy_string(cdr->uniqueid, c->uniqueid, sizeof(cdr->uniqueid));
765                 }
766         }
767         return 0;
768 }
769
770 void ast_cdr_end(struct ast_cdr *cdr)
771 {
772         for ( ; cdr ; cdr = cdr->next) {
773                 check_post(cdr);
774                 if (ast_tvzero(cdr->end))
775                         cdr->end = ast_tvnow();
776                 if (ast_tvzero(cdr->start)) {
777                         ast_log(LOG_WARNING, "CDR on channel '%s' has not started\n", S_OR(cdr->channel, "<unknown>"));
778                         cdr->disposition = AST_CDR_FAILED;
779                 } else
780                         cdr->duration = cdr->end.tv_sec - cdr->start.tv_sec;
781                 cdr->billsec = ast_tvzero(cdr->answer) ? 0 : cdr->end.tv_sec - cdr->answer.tv_sec;
782         }
783 }
784
785 char *ast_cdr_disp2str(int disposition)
786 {
787         switch (disposition) {
788         case AST_CDR_NOANSWER:
789                 return "NO ANSWER";
790         case AST_CDR_FAILED:
791                 return "FAILED";                
792         case AST_CDR_BUSY:
793                 return "BUSY";          
794         case AST_CDR_ANSWERED:
795                 return "ANSWERED";
796         }
797         return "UNKNOWN";
798 }
799
800 /*! Converts AMA flag to printable string */
801 char *ast_cdr_flags2str(int flag)
802 {
803         switch (flag) {
804         case AST_CDR_OMIT:
805                 return "OMIT";
806         case AST_CDR_BILLING:
807                 return "BILLING";
808         case AST_CDR_DOCUMENTATION:
809                 return "DOCUMENTATION";
810         }
811         return "Unknown";
812 }
813
814 int ast_cdr_setaccount(struct ast_channel *chan, const char *account)
815 {
816         struct ast_cdr *cdr = chan->cdr;
817
818         ast_string_field_set(chan, accountcode, account);
819         for ( ; cdr ; cdr = cdr->next) {
820                 if (!ast_test_flag(cdr, AST_CDR_FLAG_LOCKED))
821                         ast_copy_string(cdr->accountcode, chan->accountcode, sizeof(cdr->accountcode));
822         }
823         return 0;
824 }
825
826 int ast_cdr_setamaflags(struct ast_channel *chan, const char *flag)
827 {
828         struct ast_cdr *cdr;
829         int newflag = ast_cdr_amaflags2int(flag);
830         if (newflag) {
831                 for (cdr = chan->cdr; cdr; cdr = cdr->next)
832                         cdr->amaflags = newflag;
833         }
834
835         return 0;
836 }
837
838 int ast_cdr_setuserfield(struct ast_channel *chan, const char *userfield)
839 {
840         struct ast_cdr *cdr = chan->cdr;
841
842         for ( ; cdr ; cdr = cdr->next) {
843                 if (!ast_test_flag(cdr, AST_CDR_FLAG_LOCKED)) 
844                         ast_copy_string(cdr->userfield, userfield, sizeof(cdr->userfield));
845         }
846
847         return 0;
848 }
849
850 int ast_cdr_appenduserfield(struct ast_channel *chan, const char *userfield)
851 {
852         struct ast_cdr *cdr = chan->cdr;
853
854         for ( ; cdr ; cdr = cdr->next) {
855                 int len = strlen(cdr->userfield);
856
857                 if (!ast_test_flag(cdr, AST_CDR_FLAG_LOCKED))
858                         ast_copy_string(cdr->userfield + len, userfield, sizeof(cdr->userfield) - len);
859         }
860
861         return 0;
862 }
863
864 int ast_cdr_update(struct ast_channel *c)
865 {
866         struct ast_cdr *cdr = c->cdr;
867
868         for ( ; cdr ; cdr = cdr->next) {
869                 if (!ast_test_flag(cdr, AST_CDR_FLAG_LOCKED)) {
870                         set_one_cid(cdr, c);
871
872                         /* Copy account code et-al */   
873                         ast_copy_string(cdr->accountcode, c->accountcode, sizeof(cdr->accountcode));
874                         /* Destination information */ /* XXX privilege macro* ? */
875                         ast_copy_string(cdr->dst, S_OR(c->macroexten, c->exten), sizeof(cdr->dst));
876                         ast_copy_string(cdr->dcontext, S_OR(c->macrocontext, c->context), sizeof(cdr->dcontext));
877                 }
878         }
879
880         return 0;
881 }
882
883 int ast_cdr_amaflags2int(const char *flag)
884 {
885         if (!strcasecmp(flag, "default"))
886                 return 0;
887         if (!strcasecmp(flag, "omit"))
888                 return AST_CDR_OMIT;
889         if (!strcasecmp(flag, "billing"))
890                 return AST_CDR_BILLING;
891         if (!strcasecmp(flag, "documentation"))
892                 return AST_CDR_DOCUMENTATION;
893         return -1;
894 }
895
896 static void post_cdr(struct ast_cdr *cdr)
897 {
898         char *chan;
899         struct ast_cdr_beitem *i;
900
901         for ( ; cdr ; cdr = cdr->next) {
902                 chan = S_OR(cdr->channel, "<unknown>");
903                 check_post(cdr);
904                 if (ast_tvzero(cdr->end))
905                         ast_log(LOG_WARNING, "CDR on channel '%s' lacks end\n", chan);
906                 if (ast_tvzero(cdr->start))
907                         ast_log(LOG_WARNING, "CDR on channel '%s' lacks start\n", chan);
908                 ast_set_flag(cdr, AST_CDR_FLAG_POSTED);
909                 if (ast_test_flag(cdr, AST_CDR_FLAG_POST_DISABLED))
910                         continue;
911                 AST_LIST_LOCK(&be_list);
912                 AST_LIST_TRAVERSE(&be_list, i, list) {
913                         i->be(cdr);
914                 }
915                 AST_LIST_UNLOCK(&be_list);
916         }
917 }
918
919 void ast_cdr_reset(struct ast_cdr *cdr, struct ast_flags *_flags)
920 {
921         struct ast_cdr *dup;
922         struct ast_flags flags = { 0 };
923
924         if (_flags)
925                 ast_copy_flags(&flags, _flags, AST_FLAGS_ALL);
926
927         for ( ; cdr ; cdr = cdr->next) {
928                 /* Detach if post is requested */
929                 if (ast_test_flag(&flags, AST_CDR_FLAG_LOCKED) || !ast_test_flag(cdr, AST_CDR_FLAG_LOCKED)) {
930                         if (ast_test_flag(&flags, AST_CDR_FLAG_POSTED)) {
931                                 ast_cdr_end(cdr);
932                                 if ((dup = ast_cdr_dup(cdr))) {
933                                         ast_cdr_detach(dup);
934                                 }
935                                 ast_set_flag(cdr, AST_CDR_FLAG_POSTED);
936                         }
937
938                         /* clear variables */
939                         if (!ast_test_flag(&flags, AST_CDR_FLAG_KEEP_VARS)) {
940                                 ast_cdr_free_vars(cdr, 0);
941                         }
942
943                         /* Reset to initial state */
944                         ast_clear_flag(cdr, AST_FLAGS_ALL);     
945                         memset(&cdr->start, 0, sizeof(cdr->start));
946                         memset(&cdr->end, 0, sizeof(cdr->end));
947                         memset(&cdr->answer, 0, sizeof(cdr->answer));
948                         cdr->billsec = 0;
949                         cdr->duration = 0;
950                         ast_cdr_start(cdr);
951                         cdr->disposition = AST_CDR_NOANSWER;
952                 }
953         }
954 }
955
956 struct ast_cdr *ast_cdr_append(struct ast_cdr *cdr, struct ast_cdr *newcdr) 
957 {
958         struct ast_cdr *ret;
959
960         if (cdr) {
961                 ret = cdr;
962
963                 while (cdr->next)
964                         cdr = cdr->next;
965                 cdr->next = newcdr;
966         } else {
967                 ret = newcdr;
968         }
969
970         return ret;
971 }
972
973 /*! \note Don't call without cdr_batch_lock */
974 static void reset_batch(void)
975 {
976         batch->size = 0;
977         batch->head = NULL;
978         batch->tail = NULL;
979 }
980
981 /*! \note Don't call without cdr_batch_lock */
982 static int init_batch(void)
983 {
984         /* This is the single meta-batch used to keep track of all CDRs during the entire life of the program */
985         if (!(batch = ast_malloc(sizeof(*batch))))
986                 return -1;
987
988         reset_batch();
989
990         return 0;
991 }
992
993 static void *do_batch_backend_process(void *data)
994 {
995         struct ast_cdr_batch_item *processeditem;
996         struct ast_cdr_batch_item *batchitem = data;
997
998         /* Push each CDR into storage mechanism(s) and free all the memory */
999         while (batchitem) {
1000                 post_cdr(batchitem->cdr);
1001                 ast_cdr_free(batchitem->cdr);
1002                 processeditem = batchitem;
1003                 batchitem = batchitem->next;
1004                 free(processeditem);
1005         }
1006
1007         return NULL;
1008 }
1009
1010 void ast_cdr_submit_batch(int shutdown)
1011 {
1012         struct ast_cdr_batch_item *oldbatchitems = NULL;
1013         pthread_attr_t attr;
1014         pthread_t batch_post_thread = AST_PTHREADT_NULL;
1015
1016         /* if there's no batch, or no CDRs in the batch, then there's nothing to do */
1017         if (!batch || !batch->head)
1018                 return;
1019
1020         /* move the old CDRs aside, and prepare a new CDR batch */
1021         ast_mutex_lock(&cdr_batch_lock);
1022         oldbatchitems = batch->head;
1023         reset_batch();
1024         ast_mutex_unlock(&cdr_batch_lock);
1025
1026         /* if configured, spawn a new thread to post these CDRs,
1027            also try to save as much as possible if we are shutting down safely */
1028         if (batchscheduleronly || shutdown) {
1029                 if (option_debug)
1030                         ast_log(LOG_DEBUG, "CDR single-threaded batch processing begins now\n");
1031                 do_batch_backend_process(oldbatchitems);
1032         } else {
1033                 pthread_attr_init(&attr);
1034                 pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED);
1035                 if (ast_pthread_create_background(&batch_post_thread, &attr, do_batch_backend_process, oldbatchitems)) {
1036                         ast_log(LOG_WARNING, "CDR processing thread could not detach, now trying in this thread\n");
1037                         do_batch_backend_process(oldbatchitems);
1038                 } else {
1039                         if (option_debug)
1040                                 ast_log(LOG_DEBUG, "CDR multi-threaded batch processing begins now\n");
1041                 }
1042                 pthread_attr_destroy(&attr);
1043         }
1044 }
1045
1046 static int submit_scheduled_batch(void *data)
1047 {
1048         ast_cdr_submit_batch(0);
1049         /* manually reschedule from this point in time */
1050         cdr_sched = ast_sched_add(sched, batchtime * 1000, submit_scheduled_batch, NULL);
1051         /* returning zero so the scheduler does not automatically reschedule */
1052         return 0;
1053 }
1054
1055 static void submit_unscheduled_batch(void)
1056 {
1057         /* this is okay since we are not being called from within the scheduler */
1058         if (cdr_sched > -1)
1059                 ast_sched_del(sched, cdr_sched);
1060         /* schedule the submission to occur ASAP (1 ms) */
1061         cdr_sched = ast_sched_add(sched, 1, submit_scheduled_batch, NULL);
1062         /* signal the do_cdr thread to wakeup early and do some work (that lazy thread ;) */
1063         ast_mutex_lock(&cdr_pending_lock);
1064         ast_cond_signal(&cdr_pending_cond);
1065         ast_mutex_unlock(&cdr_pending_lock);
1066 }
1067
1068 void ast_cdr_detach(struct ast_cdr *cdr)
1069 {
1070         struct ast_cdr_batch_item *newtail;
1071         int curr;
1072
1073         if (!cdr)
1074                 return;
1075
1076         /* maybe they disabled CDR stuff completely, so just drop it */
1077         if (!enabled) {
1078                 if (option_debug)
1079                         ast_log(LOG_DEBUG, "Dropping CDR !\n");
1080                 ast_set_flag(cdr, AST_CDR_FLAG_POST_DISABLED);
1081                 ast_cdr_free(cdr);
1082                 return;
1083         }
1084
1085         /* post stuff immediately if we are not in batch mode, this is legacy behaviour */
1086         if (!batchmode) {
1087                 post_cdr(cdr);
1088                 ast_cdr_free(cdr);
1089                 return;
1090         }
1091
1092         /* otherwise, each CDR gets put into a batch list (at the end) */
1093         if (option_debug)
1094                 ast_log(LOG_DEBUG, "CDR detaching from this thread\n");
1095
1096         /* we'll need a new tail for every CDR */
1097         if (!(newtail = ast_calloc(1, sizeof(*newtail)))) {
1098                 post_cdr(cdr);
1099                 ast_cdr_free(cdr);
1100                 return;
1101         }
1102
1103         /* don't traverse a whole list (just keep track of the tail) */
1104         ast_mutex_lock(&cdr_batch_lock);
1105         if (!batch)
1106                 init_batch();
1107         if (!batch->head) {
1108                 /* new batch is empty, so point the head at the new tail */
1109                 batch->head = newtail;
1110         } else {
1111                 /* already got a batch with something in it, so just append a new tail */
1112                 batch->tail->next = newtail;
1113         }
1114         newtail->cdr = cdr;
1115         batch->tail = newtail;
1116         curr = batch->size++;
1117         ast_mutex_unlock(&cdr_batch_lock);
1118
1119         /* if we have enough stuff to post, then do it */
1120         if (curr >= (batchsize - 1))
1121                 submit_unscheduled_batch();
1122 }
1123
1124 static void *do_cdr(void *data)
1125 {
1126         struct timespec timeout;
1127         int schedms;
1128         int numevents = 0;
1129
1130         for (;;) {
1131                 struct timeval now;
1132                 schedms = ast_sched_wait(sched);
1133                 /* this shouldn't happen, but provide a 1 second default just in case */
1134                 if (schedms <= 0)
1135                         schedms = 1000;
1136                 now = ast_tvadd(ast_tvnow(), ast_samp2tv(schedms, 1000));
1137                 timeout.tv_sec = now.tv_sec;
1138                 timeout.tv_nsec = now.tv_usec * 1000;
1139                 /* prevent stuff from clobbering cdr_pending_cond, then wait on signals sent to it until the timeout expires */
1140                 ast_mutex_lock(&cdr_pending_lock);
1141                 ast_cond_timedwait(&cdr_pending_cond, &cdr_pending_lock, &timeout);
1142                 numevents = ast_sched_runq(sched);
1143                 ast_mutex_unlock(&cdr_pending_lock);
1144                 if (option_debug > 1)
1145                         ast_log(LOG_DEBUG, "Processed %d scheduled CDR batches from the run queue\n", numevents);
1146         }
1147
1148         return NULL;
1149 }
1150
1151 static int handle_cli_status(int fd, int argc, char *argv[])
1152 {
1153         struct ast_cdr_beitem *beitem=NULL;
1154         int cnt=0;
1155         long nextbatchtime=0;
1156
1157         if (argc > 2)
1158                 return RESULT_SHOWUSAGE;
1159
1160         ast_cli(fd, "CDR logging: %s\n", enabled ? "enabled" : "disabled");
1161         ast_cli(fd, "CDR mode: %s\n", batchmode ? "batch" : "simple");
1162         if (enabled) {
1163                 if (batchmode) {
1164                         if (batch)
1165                                 cnt = batch->size;
1166                         if (cdr_sched > -1)
1167                                 nextbatchtime = ast_sched_when(sched, cdr_sched);
1168                         ast_cli(fd, "CDR safe shut down: %s\n", batchsafeshutdown ? "enabled" : "disabled");
1169                         ast_cli(fd, "CDR batch threading model: %s\n", batchscheduleronly ? "scheduler only" : "scheduler plus separate threads");
1170                         ast_cli(fd, "CDR current batch size: %d record%s\n", cnt, ESS(cnt));
1171                         ast_cli(fd, "CDR maximum batch size: %d record%s\n", batchsize, ESS(batchsize));
1172                         ast_cli(fd, "CDR maximum batch time: %d second%s\n", batchtime, ESS(batchtime));
1173                         ast_cli(fd, "CDR next scheduled batch processing time: %ld second%s\n", nextbatchtime, ESS(nextbatchtime));
1174                 }
1175                 AST_LIST_LOCK(&be_list);
1176                 AST_LIST_TRAVERSE(&be_list, beitem, list) {
1177                         ast_cli(fd, "CDR registered backend: %s\n", beitem->name);
1178                 }
1179                 AST_LIST_UNLOCK(&be_list);
1180         }
1181
1182         return 0;
1183 }
1184
1185 static int handle_cli_submit(int fd, int argc, char *argv[])
1186 {
1187         if (argc > 2)
1188                 return RESULT_SHOWUSAGE;
1189
1190         submit_unscheduled_batch();
1191         ast_cli(fd, "Submitted CDRs to backend engines for processing.  This may take a while.\n");
1192
1193         return 0;
1194 }
1195
1196 static struct ast_cli_entry cli_submit = {
1197         { "cdr", "submit", NULL },
1198         handle_cli_submit, "Posts all pending batched CDR data",
1199         "Usage: cdr submit\n"
1200         "       Posts all pending batched CDR data to the configured CDR backend engine modules.\n"
1201 };
1202
1203 static struct ast_cli_entry cli_status = {
1204         { "cdr", "status", NULL },
1205         handle_cli_status, "Display the CDR status",
1206         "Usage: cdr status\n"
1207         "       Displays the Call Detail Record engine system status.\n"
1208 };
1209
1210 static int do_reload(void)
1211 {
1212         struct ast_config *config;
1213         const char *enabled_value;
1214         const char *batched_value;
1215         const char *scheduleronly_value;
1216         const char *batchsafeshutdown_value;
1217         const char *size_value;
1218         const char *time_value;
1219         const char *end_before_h_value;
1220         int cfg_size;
1221         int cfg_time;
1222         int was_enabled;
1223         int was_batchmode;
1224         int res=0;
1225
1226         ast_mutex_lock(&cdr_batch_lock);
1227
1228         batchsize = BATCH_SIZE_DEFAULT;
1229         batchtime = BATCH_TIME_DEFAULT;
1230         batchscheduleronly = BATCH_SCHEDULER_ONLY_DEFAULT;
1231         batchsafeshutdown = BATCH_SAFE_SHUTDOWN_DEFAULT;
1232         was_enabled = enabled;
1233         was_batchmode = batchmode;
1234         enabled = 1;
1235         batchmode = 0;
1236
1237         /* don't run the next scheduled CDR posting while reloading */
1238         if (cdr_sched > -1)
1239                 ast_sched_del(sched, cdr_sched);
1240
1241         if ((config = ast_config_load("cdr.conf"))) {
1242                 if ((enabled_value = ast_variable_retrieve(config, "general", "enable"))) {
1243                         enabled = ast_true(enabled_value);
1244                 }
1245                 if ((batched_value = ast_variable_retrieve(config, "general", "batch"))) {
1246                         batchmode = ast_true(batched_value);
1247                 }
1248                 if ((scheduleronly_value = ast_variable_retrieve(config, "general", "scheduleronly"))) {
1249                         batchscheduleronly = ast_true(scheduleronly_value);
1250                 }
1251                 if ((batchsafeshutdown_value = ast_variable_retrieve(config, "general", "safeshutdown"))) {
1252                         batchsafeshutdown = ast_true(batchsafeshutdown_value);
1253                 }
1254                 if ((size_value = ast_variable_retrieve(config, "general", "size"))) {
1255                         if (sscanf(size_value, "%d", &cfg_size) < 1)
1256                                 ast_log(LOG_WARNING, "Unable to convert '%s' to a numeric value.\n", size_value);
1257                         else if (size_value < 0)
1258                                 ast_log(LOG_WARNING, "Invalid maximum batch size '%d' specified, using default\n", cfg_size);
1259                         else
1260                                 batchsize = cfg_size;
1261                 }
1262                 if ((time_value = ast_variable_retrieve(config, "general", "time"))) {
1263                         if (sscanf(time_value, "%d", &cfg_time) < 1)
1264                                 ast_log(LOG_WARNING, "Unable to convert '%s' to a numeric value.\n", time_value);
1265                         else if (time_value < 0)
1266                                 ast_log(LOG_WARNING, "Invalid maximum batch time '%d' specified, using default\n", cfg_time);
1267                         else
1268                                 batchtime = cfg_time;
1269                 }
1270                 if ((end_before_h_value = ast_variable_retrieve(config, "general", "endbeforehexten")))
1271                         ast_set2_flag(&ast_options, ast_true(end_before_h_value), AST_OPT_FLAG_END_CDR_BEFORE_H_EXTEN);
1272         }
1273
1274         if (enabled && !batchmode) {
1275                 ast_log(LOG_NOTICE, "CDR simple logging enabled.\n");
1276         } else if (enabled && batchmode) {
1277                 cdr_sched = ast_sched_add(sched, batchtime * 1000, submit_scheduled_batch, NULL);
1278                 ast_log(LOG_NOTICE, "CDR batch mode logging enabled, first of either size %d or time %d seconds.\n", batchsize, batchtime);
1279         } else {
1280                 ast_log(LOG_NOTICE, "CDR logging disabled, data will be lost.\n");
1281         }
1282
1283         /* if this reload enabled the CDR batch mode, create the background thread
1284            if it does not exist */
1285         if (enabled && batchmode && (!was_enabled || !was_batchmode) && (cdr_thread == AST_PTHREADT_NULL)) {
1286                 ast_cond_init(&cdr_pending_cond, NULL);
1287                 if (ast_pthread_create_background(&cdr_thread, NULL, do_cdr, NULL) < 0) {
1288                         ast_log(LOG_ERROR, "Unable to start CDR thread.\n");
1289                         ast_sched_del(sched, cdr_sched);
1290                 } else {
1291                         ast_cli_register(&cli_submit);
1292                         ast_register_atexit(ast_cdr_engine_term);
1293                         res = 0;
1294                 }
1295         /* if this reload disabled the CDR and/or batch mode and there is a background thread,
1296            kill it */
1297         } else if (((!enabled && was_enabled) || (!batchmode && was_batchmode)) && (cdr_thread != AST_PTHREADT_NULL)) {
1298                 /* wake up the thread so it will exit */
1299                 pthread_cancel(cdr_thread);
1300                 pthread_kill(cdr_thread, SIGURG);
1301                 pthread_join(cdr_thread, NULL);
1302                 cdr_thread = AST_PTHREADT_NULL;
1303                 ast_cond_destroy(&cdr_pending_cond);
1304                 ast_cli_unregister(&cli_submit);
1305                 ast_unregister_atexit(ast_cdr_engine_term);
1306                 res = 0;
1307                 /* if leaving batch mode, then post the CDRs in the batch,
1308                    and don't reschedule, since we are stopping CDR logging */
1309                 if (!batchmode && was_batchmode) {
1310                         ast_cdr_engine_term();
1311                 }
1312         } else {
1313                 res = 0;
1314         }
1315
1316         ast_mutex_unlock(&cdr_batch_lock);
1317         ast_config_destroy(config);
1318
1319         return res;
1320 }
1321
1322 int ast_cdr_engine_init(void)
1323 {
1324         int res;
1325
1326         sched = sched_context_create();
1327         if (!sched) {
1328                 ast_log(LOG_ERROR, "Unable to create schedule context.\n");
1329                 return -1;
1330         }
1331
1332         ast_cli_register(&cli_status);
1333
1334         res = do_reload();
1335         if (res) {
1336                 ast_mutex_lock(&cdr_batch_lock);
1337                 res = init_batch();
1338                 ast_mutex_unlock(&cdr_batch_lock);
1339         }
1340
1341         return res;
1342 }
1343
1344 /* \note This actually gets called a couple of times at shutdown.  Once, before we start
1345    hanging up channels, and then again, after the channel hangup timeout expires */
1346 void ast_cdr_engine_term(void)
1347 {
1348         ast_cdr_submit_batch(batchsafeshutdown);
1349 }
1350
1351 int ast_cdr_engine_reload(void)
1352 {
1353         return do_reload();
1354 }
1355