Asterisk - The Open Source Telephony Project  21.4.1
provision.c
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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 IAX Provisioning Protocol
22  *
23  * \author Mark Spencer <markster@digium.com>
24  */
25 
26 /*** MODULEINFO
27  <support_level>core</support_level>
28  ***/
29 
30 #include "asterisk.h"
31 
32 #include <netdb.h>
33 #include <netinet/in.h>
34 #include <netinet/in_systm.h>
35 #include <netinet/ip.h>
36 #include <sys/socket.h>
37 
38 #include "asterisk/config.h"
39 #include "asterisk/cli.h"
40 #include "asterisk/lock.h"
41 #include "asterisk/frame.h"
42 #include "asterisk/md5.h"
43 #include "asterisk/astdb.h"
44 #include "asterisk/utils.h"
45 #include "asterisk/acl.h"
46 #include "asterisk/format_cache.h"
48 
49 #include "include/iax2.h"
50 #include "include/provision.h"
51 #include "include/parser.h"
52 
53 static int provinit = 0;
54 
55 struct iax_template {
56  int dead;
57  char name[80];
58  char src[80];
59  char user[20];
60  char pass[20];
61  char lang[10];
62  unsigned short port;
63  unsigned int server;
64  unsigned short serverport;
65  unsigned int altserver;
66  unsigned int flags;
67  iax2_format format;
68  unsigned int tos;
70 };
71 
73 
74 AST_MUTEX_DEFINE_STATIC(provlock);
75 
76 static struct iax_flag {
77  char *name;
78  int value;
79 } iax_flags[] = {
80  { "register", PROV_FLAG_REGISTER },
81  { "secure", PROV_FLAG_SECURE },
82  { "heartbeat", PROV_FLAG_HEARTBEAT },
83  { "debug", PROV_FLAG_DEBUG },
84  { "disablecid", PROV_FLAG_DIS_CALLERID },
85  { "disablecw", PROV_FLAG_DIS_CALLWAIT },
86  { "disablecidcw", PROV_FLAG_DIS_CIDCW },
87  { "disable3way", PROV_FLAG_DIS_THREEWAY },
88 };
89 
90 char *iax_provflags2str(char *buf, int buflen, unsigned int flags)
91 {
92  int x;
93 
94  if (!buf || buflen < 1)
95  return NULL;
96 
97  buf[0] = '\0';
98 
99  for (x = 0; x < ARRAY_LEN(iax_flags); x++) {
100  if (flags & iax_flags[x].value){
101  strncat(buf, iax_flags[x].name, buflen - strlen(buf) - 1);
102  strncat(buf, ",", buflen - strlen(buf) - 1);
103  }
104  }
105 
106  if (!ast_strlen_zero(buf))
107  buf[strlen(buf) - 1] = '\0';
108  else
109  strncpy(buf, "none", buflen - 1);
110 
111  return buf;
112 }
113 
114 static unsigned int iax_str2flags(const char *buf)
115 {
116  int x;
117  int len;
118  unsigned int flags = 0;
119  char *e;
120  while(buf && *buf) {
121  e = strchr(buf, ',');
122  if (e)
123  len = e - buf;
124  else
125  len = 0;
126  for (x = 0; x < ARRAY_LEN(iax_flags); x++) {
127  if ((len && !strncasecmp(iax_flags[x].name, buf, len)) ||
128  (!len && !strcasecmp(iax_flags[x].name, buf))) {
129  flags |= iax_flags[x].value;
130  break;
131  }
132  }
133  if (e) {
134  buf = e + 1;
135  while(*buf && (*buf < 33))
136  buf++;
137  } else
138  break;
139  }
140  return flags;
141 }
142 
143 static void iax_template_copy(struct iax_template *dst, struct iax_template *src)
144 {
145  if (!dst || !src) {
146  return;
147  }
148 
149  dst->dead = src->dead;
150  ast_copy_string(dst->name, src->name, sizeof(dst->name));
151  ast_copy_string(dst->src, src->src, sizeof(dst->src));
152  ast_copy_string(dst->user, src->user, sizeof(dst->user));
153  ast_copy_string(dst->pass, src->pass, sizeof(dst->pass));
154  ast_copy_string(dst->lang, src->lang, sizeof(dst->lang));
155  dst->port = src->port;
156  dst->server = src->server;
157  dst->altserver = src->altserver;
158  dst->flags = src->flags;
159  dst->format = src->format;
160  dst->tos = src->tos;
161 }
162 
163 static struct iax_template *iax_template_find(const char *s, int allowdead)
164 {
165  struct iax_template *cur;
166 
167  AST_LIST_TRAVERSE(&templates, cur, list) {
168  if (!strcasecmp(s, cur->name)) {
169  if (!allowdead && cur->dead) {
170  cur = NULL;
171  }
172  break;
173  }
174  }
175 
176  return cur;
177 }
178 
179 char *iax_prov_complete_template(const char *line, const char *word, int pos, int state)
180 {
181  struct iax_template *c;
182  int which=0;
183  char *ret = NULL;
184  int wordlen = strlen(word);
185 
186  if (pos == 3) {
187  ast_mutex_lock(&provlock);
188  AST_LIST_TRAVERSE(&templates, c, list) {
189  if (!strncasecmp(word, c->name, wordlen) && ++which > state) {
190  ret = ast_strdup(c->name);
191  break;
192  }
193  }
194  ast_mutex_unlock(&provlock);
195  }
196  return ret;
197 }
198 
199 static unsigned int prov_ver_calc(struct iax_ie_data *provdata)
200 {
201  struct MD5Context md5;
202  unsigned int tmp[4];
203  MD5Init(&md5);
204  MD5Update(&md5, provdata->buf, provdata->pos);
205  MD5Final((unsigned char *)tmp, &md5);
206  return tmp[0] ^ tmp[1] ^ tmp[2] ^ tmp[3];
207 }
208 
209 int iax_provision_build(struct iax_ie_data *provdata, unsigned int *signature, const char *template, int force)
210 {
211  struct iax_template *cur;
212  unsigned int sig;
213  char tmp[40];
214  memset(provdata, 0, sizeof(*provdata));
215  ast_mutex_lock(&provlock);
216  cur = iax_template_find(template, 1);
217  /* If no match, try searching for '*' */
218  if (!cur)
219  cur = iax_template_find("*", 1);
220  if (cur) {
221  /* found it -- add information elements as appropriate */
222  if (force || strlen(cur->user))
223  iax_ie_append_str(provdata, PROV_IE_USER, cur->user);
224  if (force || strlen(cur->pass))
225  iax_ie_append_str(provdata, PROV_IE_PASS, cur->pass);
226  if (force || strlen(cur->lang))
227  iax_ie_append_str(provdata, PROV_IE_LANG, cur->lang);
228  if (force || cur->port)
229  iax_ie_append_short(provdata, PROV_IE_PORTNO, cur->port);
230  if (force || cur->server)
231  iax_ie_append_int(provdata, PROV_IE_SERVERIP, cur->server);
232  if (force || cur->serverport)
233  iax_ie_append_short(provdata, PROV_IE_SERVERPORT, cur->serverport);
234  if (force || cur->altserver)
235  iax_ie_append_int(provdata, PROV_IE_ALTSERVER, cur->altserver);
236  if (force || cur->flags)
237  iax_ie_append_int(provdata, PROV_IE_FLAGS, cur->flags);
238  if (force || cur->format)
239  iax_ie_append_int(provdata, PROV_IE_FORMAT, cur->format);
240  if (force || cur->tos)
241  iax_ie_append_byte(provdata, PROV_IE_TOS, cur->tos);
242 
243  /* Calculate checksum of message so far */
244  sig = prov_ver_calc(provdata);
245  if (signature)
246  *signature = sig;
247  /* Store signature */
248  iax_ie_append_int(provdata, PROV_IE_PROVVER, sig);
249  /* Cache signature for later verification so we need not recalculate all this */
250  snprintf(tmp, sizeof(tmp), "v0x%08x", sig);
251  ast_db_put("iax/provisioning/cache", template, tmp);
252  } else
253  ast_db_put("iax/provisioning/cache", template, "u");
254  ast_mutex_unlock(&provlock);
255  return cur ? 0 : -1;
256 }
257 
258 int iax_provision_version(unsigned int *version, const char *template, int force)
259 {
260  char tmp[80] = "";
261  struct iax_ie_data ied;
262  int ret=0;
263  memset(&ied, 0, sizeof(ied));
264 
265  ast_mutex_lock(&provlock);
266  if (ast_db_get("iax/provisioning/cache", template, tmp, sizeof(tmp))) {
267  ast_log(LOG_ERROR, "ast_db_get failed to retrieve iax/provisioning/cache/%s\n", template);
268  }
269  if (sscanf(tmp, "v%30x", version) != 1) {
270  if (strcmp(tmp, "u")) {
271  ret = iax_provision_build(&ied, version, template, force);
272  if (ret)
273  ast_debug(1, "Unable to create provisioning packet for '%s'\n", template);
274  } else
275  ret = -1;
276  } else
277  ast_debug(1, "Retrieved cached version '%s' = '%08x'\n", tmp, *version);
278  ast_mutex_unlock(&provlock);
279  return ret;
280 }
281 
282 static int iax_template_parse(struct iax_template *cur, struct ast_config *cfg, const char *s, const char *def)
283 {
284  struct ast_variable *v;
285  int foundportno = 0;
286  int foundserverportno = 0;
287  int x;
288  struct iax_template *src, tmp;
289  const char *t;
290  if (def) {
291  t = ast_variable_retrieve(cfg, s ,"template");
292  src = NULL;
293  if (t && strlen(t)) {
294  src = iax_template_find(t, 0);
295  if (!src)
296  ast_log(LOG_WARNING, "Unable to find base template '%s' for creating '%s'. Trying '%s'\n", t, s, def);
297  else
298  def = t;
299  }
300  if (!src) {
301  src = iax_template_find(def, 0);
302  if (!src)
303  ast_log(LOG_WARNING, "Unable to locate default base template '%s' for creating '%s', omitting.\n", def, s);
304  }
305  if (!src)
306  return -1;
307  ast_mutex_lock(&provlock);
308  /* Backup old data */
309  iax_template_copy(&tmp, cur);
310  /* Restore from src */
311  iax_template_copy(cur, src);
312  /* Restore important headers */
313  memcpy(cur->name, tmp.name, sizeof(cur->name));
314  cur->dead = tmp.dead;
315  ast_mutex_unlock(&provlock);
316  }
317  if (def)
318  ast_copy_string(cur->src, def, sizeof(cur->src));
319  else
320  cur->src[0] = '\0';
321  v = ast_variable_browse(cfg, s);
322  while(v) {
323  if (!strcasecmp(v->name, "port") || !strcasecmp(v->name, "serverport")) {
324  if ((sscanf(v->value, "%5d", &x) == 1) && (x > 0) && (x < 65535)) {
325  if (!strcasecmp(v->name, "port")) {
326  cur->port = x;
327  foundportno = 1;
328  } else {
329  cur->serverport = x;
330  foundserverportno = 1;
331  }
332  } else
333  ast_log(LOG_WARNING, "Ignoring invalid %s '%s' for '%s' at line %d\n", v->name, v->value, s, v->lineno);
334  } else if (!strcasecmp(v->name, "server") || !strcasecmp(v->name, "altserver")) {
335  struct ast_sockaddr addr = { {0,} };
336  if (ast_sockaddr_resolve_first_af(&addr, v->value, PARSE_PORT_FORBID, AF_INET)) {
337  ast_log(LOG_WARNING, "Ignoring invalid %s '%s' for '%s' at line %d\n", v->name, v->value, s, v->lineno);
338  } else {
339  if (!strcasecmp(v->name, "server"))
340  cur->server = ast_sockaddr_ipv4(&addr);
341  else
342  cur->altserver = ast_sockaddr_ipv4(&addr);
343  }
344  } else if (!strcasecmp(v->name, "codec")) {
345  struct ast_format *tmpfmt;
346  if ((tmpfmt = ast_format_cache_get(v->value))) {
347  cur->format = ast_format_compatibility_format2bitfield(tmpfmt);
348  ao2_ref(tmpfmt, -1);
349  } else
350  ast_log(LOG_WARNING, "Ignoring invalid codec '%s' for '%s' at line %d\n", v->value, s, v->lineno);
351  } else if (!strcasecmp(v->name, "tos")) {
352  if (ast_str2tos(v->value, &cur->tos))
353  ast_log(LOG_WARNING, "Invalid tos value at line %d, refer to QoS documentation\n", v->lineno);
354  } else if (!strcasecmp(v->name, "user")) {
355  ast_copy_string(cur->user, v->value, sizeof(cur->user));
356  if (strcmp(cur->user, v->value))
357  ast_log(LOG_WARNING, "Truncating username from '%s' to '%s' for '%s' at line %d\n", v->value, cur->user, s, v->lineno);
358  } else if (!strcasecmp(v->name, "pass")) {
359  ast_copy_string(cur->pass, v->value, sizeof(cur->pass));
360  if (strcmp(cur->pass, v->value))
361  ast_log(LOG_WARNING, "Truncating password from '%s' to '%s' for '%s' at line %d\n", v->value, cur->pass, s, v->lineno);
362  } else if (!strcasecmp(v->name, "language")) {
363  ast_copy_string(cur->lang, v->value, sizeof(cur->lang));
364  if (strcmp(cur->lang, v->value))
365  ast_log(LOG_WARNING, "Truncating language from '%s' to '%s' for '%s' at line %d\n", v->value, cur->lang, s, v->lineno);
366  } else if (!strcasecmp(v->name, "flags")) {
367  cur->flags = iax_str2flags(v->value);
368  } else if (!strncasecmp(v->name, "flags", 5) && strchr(v->name, '+')) {
369  cur->flags |= iax_str2flags(v->value);
370  } else if (!strncasecmp(v->name, "flags", 5) && strchr(v->name, '-')) {
371  cur->flags &= ~iax_str2flags(v->value);
372  } else if (strcasecmp(v->name, "template")) {
373  ast_log(LOG_WARNING, "Unknown keyword '%s' in definition of '%s' at line %d\n", v->name, s, v->lineno);
374  }
375  v = v->next;
376  }
377  if (!foundportno)
378  cur->port = IAX_DEFAULT_PORTNO;
379  if (!foundserverportno)
380  cur->serverport = IAX_DEFAULT_PORTNO;
381  return 0;
382 }
383 
384 static int iax_process_template(struct ast_config *cfg, char *s, char *def)
385 {
386  /* Find an already existing one if there */
387  struct iax_template *cur;
388  int mallocd = 0;
389 
390  cur = iax_template_find(s, 1 /* allow dead */);
391  if (!cur) {
392  mallocd = 1;
393  cur = ast_calloc(1, sizeof(*cur));
394  if (!cur) {
395  ast_log(LOG_WARNING, "Out of memory!\n");
396  return -1;
397  }
398  /* Initialize entry */
399  ast_copy_string(cur->name, s, sizeof(cur->name));
400  cur->dead = 1;
401  }
402  if (!iax_template_parse(cur, cfg, s, def))
403  cur->dead = 0;
404 
405  /* Link if we're mallocd */
406  if (mallocd) {
407  ast_mutex_lock(&provlock);
408  AST_LIST_INSERT_HEAD(&templates, cur, list);
409  ast_mutex_unlock(&provlock);
410  }
411  return 0;
412 }
413 
414 static const char *ifthere(const char *s)
415 {
416  if (strlen(s))
417  return s;
418  else
419  return "<unspecified>";
420 }
421 
422 static const char *iax_server(unsigned int addr)
423 {
424  struct in_addr ia;
425 
426  if (!addr)
427  return "<unspecified>";
428 
429  ia.s_addr = htonl(addr);
430 
431  return ast_inet_ntoa(ia);
432 }
433 
434 
435 static char *iax_show_provisioning(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
436 {
437  struct iax_template *cur;
438  char server[INET_ADDRSTRLEN];
439  char alternate[INET_ADDRSTRLEN];
440  char flags[80]; /* Has to be big enough for 'flags' too */
441  int found = 0;
442 
443  switch (cmd) {
444  case CLI_INIT:
445  e->command = "iax2 show provisioning";
446  e->usage =
447  "Usage: iax2 show provisioning [template]\n"
448  " Lists all known IAX provisioning templates or a\n"
449  " specific one if specified.\n";
450  return NULL;
451  case CLI_GENERATE:
452  return iax_prov_complete_template(a->line, a->word, a->pos, a->n);
453  }
454 
455  if ((a->argc != 3) && (a->argc != 4))
456  return CLI_SHOWUSAGE;
457 
458  ast_mutex_lock(&provlock);
459  AST_LIST_TRAVERSE(&templates, cur, list) {
460  if ((a->argc == 3) || (!strcasecmp(a->argv[3], cur->name))) {
461  if (found)
462  ast_cli(a->fd, "\n");
463  ast_copy_string(server, iax_server(cur->server), sizeof(server));
464  ast_copy_string(alternate, iax_server(cur->altserver), sizeof(alternate));
465  ast_cli(a->fd, "== %s ==\n", cur->name);
466  ast_cli(a->fd, "Base Templ: %s\n", strlen(cur->src) ? cur->src : "<none>");
467  ast_cli(a->fd, "Username: %s\n", ifthere(cur->user));
468  ast_cli(a->fd, "Secret: %s\n", ifthere(cur->pass));
469  ast_cli(a->fd, "Language: %s\n", ifthere(cur->lang));
470  ast_cli(a->fd, "Bind Port: %d\n", cur->port);
471  ast_cli(a->fd, "Server: %s\n", server);
472  ast_cli(a->fd, "Server Port: %d\n", cur->serverport);
473  ast_cli(a->fd, "Alternate: %s\n", alternate);
474  ast_cli(a->fd, "Flags: %s\n", iax_provflags2str(flags, sizeof(flags), cur->flags));
475  ast_cli(a->fd, "Format: %s\n", iax2_getformatname(cur->format));
476  ast_cli(a->fd, "TOS: 0x%x\n", cur->tos);
477  found++;
478  }
479  }
480  ast_mutex_unlock(&provlock);
481  if (!found) {
482  if (a->argc == 3)
483  ast_cli(a->fd, "No provisioning templates found\n");
484  else
485  ast_cli(a->fd, "No provisioning template matching '%s' found\n", a->argv[3]);
486  }
487  return CLI_SUCCESS;
488 }
489 
490 static struct ast_cli_entry cli_iax2_provision[] = {
491  AST_CLI_DEFINE(iax_show_provisioning, "Display iax provisioning"),
492 };
493 
494 static int iax_provision_init(void)
495 {
496  ast_cli_register_multiple(cli_iax2_provision, sizeof(cli_iax2_provision) / sizeof(struct ast_cli_entry));
497  provinit = 1;
498  return 0;
499 }
500 
501 static void iax_provision_free_templates(int dead)
502 {
503  struct iax_template *cur;
504 
505  /* Drop dead or not (depending on dead) entries while locked */
506  ast_mutex_lock(&provlock);
508  if ((dead && cur->dead) || !dead) {
510  ast_free(cur);
511  }
512  }
514  ast_mutex_unlock(&provlock);
515 }
516 
517 int iax_provision_unload(void)
518 {
519  provinit = 0;
520  ast_cli_unregister_multiple(cli_iax2_provision, sizeof(cli_iax2_provision) / sizeof(struct ast_cli_entry));
521  iax_provision_free_templates(0 /* Remove all templates. */);
522 
523  return 0;
524 }
525 
526 int iax_provision_reload(int reload)
527 {
528  struct ast_config *cfg;
529  struct iax_template *cur;
530  char *cat;
531  int found = 0;
532  struct ast_flags config_flags = { reload ? CONFIG_FLAG_FILEUNCHANGED : 0 };
533  if (!provinit)
534  iax_provision_init();
535 
536  cfg = ast_config_load2("iaxprov.conf", "chan_iax2", config_flags);
537  if (cfg != NULL && cfg != CONFIG_STATUS_FILEUNCHANGED && cfg != CONFIG_STATUS_FILEINVALID) {
538  /* Mark all as dead. No need for locking */
539  AST_LIST_TRAVERSE(&templates, cur, list) {
540  cur->dead = 1;
541  }
542 
543  /* Load as appropriate */
544  cat = ast_category_browse(cfg, NULL);
545  while(cat) {
546  if (strcasecmp(cat, "general")) {
547  iax_process_template(cfg, cat, found ? "default" : NULL);
548  found++;
549  ast_verb(3, "Loaded provisioning template '%s'\n", cat);
550  }
551  cat = ast_category_browse(cfg, cat);
552  }
553  ast_config_destroy(cfg);
554  } else if (cfg == CONFIG_STATUS_FILEUNCHANGED)
555  return 0;
556  else
557  ast_log(LOG_NOTICE, "No IAX provisioning configuration found, IAX provisioning disabled.\n");
558 
559  iax_provision_free_templates(1 /* remove only marked as dead */);
560 
561  /* Purge cached signature DB entries */
562  ast_db_deltree("iax/provisioning/cache", NULL);
563  return 0;
564 }
struct ast_variable * next
Asterisk locking-related definitions:
Asterisk main include file. File version handling, generic pbx functions.
uint64_t ast_format_compatibility_format2bitfield(const struct ast_format *format)
Convert a format structure to its respective bitfield.
int ast_cli_unregister_multiple(struct ast_cli_entry *e, int len)
Unregister multiple commands.
Definition: clicompat.c:30
const char * iax2_getformatname(iax2_format format)
iax2 wrapper function for ast_getformatname
Definition: chan_iax2.c:1950
descriptor for a cli entry.
Definition: cli.h:171
struct ast_config * ast_config_load2(const char *filename, const char *who_asked, struct ast_flags flags)
Load a config file.
Definition: main/config.c:3321
Structure for variables, used for configurations and for channel variables.
Definition of a media format.
Definition: format.c:43
uint32_t ast_sockaddr_ipv4(const struct ast_sockaddr *addr)
Get an IPv4 address of an ast_sockaddr.
Definition: netsock2.c:491
#define ast_cli_register_multiple(e, len)
Register multiple commands.
Definition: cli.h:265
#define ast_strdup(str)
A wrapper for strdup()
Definition: astmm.h:241
int ast_str2tos(const char *value, unsigned int *tos)
Convert a string to the appropriate TOS value.
Definition: acl.c:966
char * ast_category_browse(struct ast_config *config, const char *prev_name)
Browse categories.
Definition: extconf.c:3326
#define AST_LIST_TRAVERSE_SAFE_END
Closes a safe loop traversal block.
Definition: linkedlists.h:615
Socket address structure.
Definition: netsock2.h:97
Implementation of the IAX2 protocol.
#define ast_format_cache_get(name)
Retrieve a named format from the cache.
Definition: format_cache.h:278
Utility functions.
Configuration File Parser.
Access Control of various sorts.
#define ao2_ref(o, delta)
Reference/unreference an object and return the old refcount.
Definition: astobj2.h:459
#define AST_LIST_REMOVE_CURRENT(field)
Removes the current entry from a list during a traversal.
Definition: linkedlists.h:557
Asterisk internal frame definitions.
int ast_sockaddr_resolve_first_af(struct ast_sockaddr *addr, const char *name, int flag, int family)
Return the first entry from ast_sockaddr_resolve filtered by address family.
Definition: netsock2.c:337
#define ast_debug(level,...)
Log a DEBUG message.
IAX2 Provisioning protocol.
#define AST_LIST_HEAD_NOLOCK_STATIC(name, type)
Defines a structure to be used to hold a list of specified type, statically initialized.
Definition: linkedlists.h:346
Implementation of Inter-Asterisk eXchange, version 2 parser.c parser.h chan_iax2.c.
Media Format Bitfield Compatibility API.
#define AST_LIST_TRAVERSE(head, var, field)
Loops over (traverses) the entries in a list.
Definition: linkedlists.h:491
#define AST_LIST_ENTRY(type)
Declare a forward link structure inside a list entry.
Definition: linkedlists.h:410
#define AST_LIST_INSERT_HEAD(head, elm, field)
Inserts a list entry at the head of a list.
Definition: linkedlists.h:711
const char * ast_inet_ntoa(struct in_addr ia)
thread-safe replacement for inet_ntoa().
Definition: utils.c:928
char * command
Definition: cli.h:186
#define ast_calloc(num, len)
A wrapper for calloc()
Definition: astmm.h:202
int ast_db_get(const char *family, const char *key, char *value, int valuelen)
Get key value specified by family/key.
Definition: main/db.c:427
structure to hold users read from users.conf
Structure used to handle boolean flags.
Definition: utils.h:199
Definition: md5.h:26
const char * usage
Definition: cli.h:177
Standard Command Line Interface.
void ast_copy_string(char *dst, const char *src, size_t size)
Size-limited null-terminating string copy.
Definition: strings.h:425
int ast_db_put(const char *family, const char *key, const char *value)
Store value addressed by family/key.
Definition: main/db.c:342
#define AST_LIST_TRAVERSE_SAFE_BEGIN(head, var, field)
Loops safely over (traverses) the entries in a list.
Definition: linkedlists.h:529
void ast_config_destroy(struct ast_config *cfg)
Destroys a config.
Definition: extconf.c:1289
MD5 digest functions.
Persistent data storage (akin to *doze registry)
int ast_db_deltree(const char *family, const char *keytree)
Delete one or more entries in astdb.
Definition: main/db.c:536
int64_t iax2_format
Definition: iax2.h:224
Media Format Cache API.