#include "asterisk.h"
#include "asterisk/_private.h"
#include <regex.h>
#include <signal.h>
#include "asterisk/dnsmgr.h"
#include "asterisk/linkedlists.h"
#include "asterisk/utils.h"
#include "asterisk/config.h"
#include "asterisk/sched.h"
#include "asterisk/cli.h"
#include "asterisk/manager.h"
#include "asterisk/acl.h"
Go to the source code of this file.
Data Structures | |
struct | ast_dnsmgr_entry |
struct | entry_list |
struct | refresh_info |
Defines | |
#define | REFRESH_DEFAULT 300 |
Functions | |
int | ast_dnsmgr_changed (struct ast_dnsmgr_entry *entry) |
Check is see if a dnsmgr entry has changed. | |
ast_dnsmgr_entry * | ast_dnsmgr_get (const char *name, struct ast_sockaddr *result, const char *service) |
Allocate a new DNS manager entry. | |
ast_dnsmgr_entry * | ast_dnsmgr_get_family (const char *name, struct ast_sockaddr *result, const char *service, unsigned int family) |
Allocate a new DNS manager entry. | |
int | ast_dnsmgr_lookup (const char *name, struct ast_sockaddr *result, struct ast_dnsmgr_entry **dnsmgr, const char *service) |
Allocate and initialize a DNS manager entry. | |
int | ast_dnsmgr_lookup_cb (const char *name, struct ast_sockaddr *result, struct ast_dnsmgr_entry **dnsmgr, const char *service, dns_update_func func, void *data) |
Allocate and initialize a DNS manager entry, with update callback. | |
int | ast_dnsmgr_refresh (struct ast_dnsmgr_entry *entry) |
Force a refresh of a dnsmgr entry. | |
void | ast_dnsmgr_release (struct ast_dnsmgr_entry *entry) |
Free a DNS manager entry. | |
int | dnsmgr_init (void) |
static int | dnsmgr_refresh (struct ast_dnsmgr_entry *entry, int verbose) |
int | dnsmgr_reload (void) |
void | dnsmgr_start_refresh (void) |
static void * | do_refresh (void *data) |
static int | do_reload (int loading) |
static char * | handle_cli_refresh (struct ast_cli_entry *e, int cmd, struct ast_cli_args *a) |
static char * | handle_cli_reload (struct ast_cli_entry *e, int cmd, struct ast_cli_args *a) |
static char * | handle_cli_status (struct ast_cli_entry *e, int cmd, struct ast_cli_args *a) |
static int | internal_dnsmgr_lookup (const char *name, struct ast_sockaddr *result, struct ast_dnsmgr_entry **dnsmgr, const char *service, dns_update_func func, void *data) |
static int | refresh_list (const void *data) |
Variables | |
static struct ast_cli_entry | cli_refresh = { .handler = handle_cli_refresh , .summary = "Performs an immediate refresh" ,__VA_ARGS__ } |
static struct ast_cli_entry | cli_reload = { .handler = handle_cli_reload , .summary = "Reloads the DNS manager configuration" ,__VA_ARGS__ } |
static struct ast_cli_entry | cli_status = { .handler = handle_cli_status , .summary = "Display the DNS manager status" ,__VA_ARGS__ } |
static int | enabled |
static struct refresh_info | master_refresh_info |
static int | refresh_interval |
static ast_mutex_t | refresh_lock = { PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP , NULL, 1 } |
static int | refresh_sched = -1 |
static pthread_t | refresh_thread = AST_PTHREADT_NULL |
static struct sched_context * | sched |
Definition in file dnsmgr.c.
#define REFRESH_DEFAULT 300 |
int ast_dnsmgr_changed | ( | struct ast_dnsmgr_entry * | entry | ) |
Check is see if a dnsmgr entry has changed.
non-zero | if the dnsmgr entry has changed since the last call to this function | |
zero | if the dnsmgr entry has not changed since the last call to this function |
Definition at line 234 of file dnsmgr.c.
References ast_mutex_lock, ast_mutex_unlock, ast_dnsmgr_entry::changed, and ast_dnsmgr_entry::lock.
Referenced by iax2_do_register().
00235 { 00236 int changed; 00237 00238 ast_mutex_lock(&entry->lock); 00239 00240 changed = entry->changed; 00241 entry->changed = 0; 00242 00243 ast_mutex_unlock(&entry->lock); 00244 00245 return changed; 00246 }
struct ast_dnsmgr_entry* ast_dnsmgr_get | ( | const char * | name, | |
struct ast_sockaddr * | result, | |||
const char * | service | |||
) |
Allocate a new DNS manager entry.
name | the hostname | |
result | where the DNS manager should store the IP address as it refreshes it. | |
service |
1.8.0 result changed from struct ast_sockaddr_in to ast_sockaddr for IPv6 support
Definition at line 117 of file dnsmgr.c.
References ast_dnsmgr_get_family(), and ast_dnsmgr_entry::result.
00118 { 00119 return ast_dnsmgr_get_family(name, result, service, 0); 00120 }
struct ast_dnsmgr_entry* ast_dnsmgr_get_family | ( | const char * | name, | |
struct ast_sockaddr * | result, | |||
const char * | service, | |||
unsigned int | family | |||
) |
Allocate a new DNS manager entry.
name | the hostname | |
result | where the DNS manager should store the IP address as it refreshes it. | |
service | ||
family | Address family to filter DNS addresses. |
Definition at line 92 of file dnsmgr.c.
References ast_calloc, ast_mutex_init, AST_RWLIST_INSERT_HEAD, AST_RWLIST_UNLOCK, AST_RWLIST_WRLOCK, ast_strlen_zero(), ast_dnsmgr_entry::family, ast_dnsmgr_entry::list, ast_dnsmgr_entry::lock, ast_dnsmgr_entry::name, ast_dnsmgr_entry::result, and ast_dnsmgr_entry::service.
Referenced by ast_dnsmgr_get(), and internal_dnsmgr_lookup().
00093 { 00094 struct ast_dnsmgr_entry *entry; 00095 int total_size = sizeof(*entry) + strlen(name) + (service ? strlen(service) + 1 : 0); 00096 00097 if (!result || ast_strlen_zero(name) || !(entry = ast_calloc(1, total_size))) { 00098 return NULL; 00099 } 00100 00101 entry->result = result; 00102 ast_mutex_init(&entry->lock); 00103 strcpy(entry->name, name); 00104 if (service) { 00105 entry->service = ((char *) entry) + sizeof(*entry) + strlen(name); 00106 strcpy(entry->service, service); 00107 } 00108 entry->family = family; 00109 00110 AST_RWLIST_WRLOCK(&entry_list); 00111 AST_RWLIST_INSERT_HEAD(&entry_list, entry, list); 00112 AST_RWLIST_UNLOCK(&entry_list); 00113 00114 return entry; 00115 }
int ast_dnsmgr_lookup | ( | const char * | name, | |
struct ast_sockaddr * | result, | |||
struct ast_dnsmgr_entry ** | dnsmgr, | |||
const char * | service | |||
) |
Allocate and initialize a DNS manager entry.
name | the hostname | |
result | where to store the IP address as the DNS manager refreshes it. The address family is used as an input parameter to filter the returned addresses. If it is 0, both IPv4 and IPv6 addresses can be returned. | |
dnsmgr | Where to store the allocate DNS manager entry | |
service |
0 | success | |
non-zero | failure |
Definition at line 176 of file dnsmgr.c.
References internal_dnsmgr_lookup(), and ast_dnsmgr_entry::result.
Referenced by build_peer(), and iax2_append_register().
00177 { 00178 return internal_dnsmgr_lookup(name, result, dnsmgr, service, NULL, NULL); 00179 }
int ast_dnsmgr_lookup_cb | ( | const char * | name, | |
struct ast_sockaddr * | result, | |||
struct ast_dnsmgr_entry ** | dnsmgr, | |||
const char * | service, | |||
dns_update_func | func, | |||
void * | data | |||
) |
Allocate and initialize a DNS manager entry, with update callback.
name | the hostname | |
result | The addr which is intended to be updated in the update callback when DNS manager calls it on refresh. The address family is used as an input parameter to filter the returned addresses. If it is 0, both IPv4 and IPv6 addresses can be returned. | |
dnsmgr | Where to store the allocate DNS manager entry | |
service | ||
func | The update callback function The update callback will be called when DNS manager detects that an IP address has been changed. Instead of updating the addr itself, DNS manager will call this callback function with the old and new addresses. It is the responsibility of the callback to perform any updates | |
data | A pointer to data that will be passed through to the callback function |
0 | success | |
non-zero | failure |
Definition at line 181 of file dnsmgr.c.
References internal_dnsmgr_lookup(), and ast_dnsmgr_entry::result.
Referenced by __sip_subscribe_mwi_do(), build_peer(), and transmit_register().
00182 { 00183 return internal_dnsmgr_lookup(name, result, dnsmgr, service, func, data); 00184 }
int ast_dnsmgr_refresh | ( | struct ast_dnsmgr_entry * | entry | ) |
Force a refresh of a dnsmgr entry.
non-zero | if the result is different than the previous result | |
zero | if the result is the same as the previous result |
Definition at line 226 of file dnsmgr.c.
References dnsmgr_refresh().
Referenced by build_peer(), iax2_do_register(), and sip_reg_timeout().
00227 { 00228 return dnsmgr_refresh(entry, 0); 00229 }
void ast_dnsmgr_release | ( | struct ast_dnsmgr_entry * | entry | ) |
Free a DNS manager entry.
entry | the DNS manager entry to free |
Definition at line 122 of file dnsmgr.c.
References ast_free, ast_mutex_destroy, AST_RWLIST_REMOVE, AST_RWLIST_UNLOCK, AST_RWLIST_WRLOCK, ast_verb, ast_dnsmgr_entry::list, ast_dnsmgr_entry::lock, and ast_dnsmgr_entry::name.
Referenced by delete_users(), match_and_cleanup_peer_sched(), peer_destructor(), and unload_module().
00123 { 00124 if (!entry) 00125 return; 00126 00127 AST_RWLIST_WRLOCK(&entry_list); 00128 AST_RWLIST_REMOVE(&entry_list, entry, list); 00129 AST_RWLIST_UNLOCK(&entry_list); 00130 ast_verb(4, "removing dns manager for '%s'\n", entry->name); 00131 00132 ast_mutex_destroy(&entry->lock); 00133 ast_free(entry); 00134 }
int dnsmgr_init | ( | void | ) |
Provided by dnsmgr.c
Definition at line 393 of file dnsmgr.c.
References ast_cli_register(), ast_log(), cli_refresh, cli_reload, cli_status, do_reload(), LOG_ERROR, sched, and sched_context_create().
Referenced by main().
00394 { 00395 if (!(sched = sched_context_create())) { 00396 ast_log(LOG_ERROR, "Unable to create schedule context.\n"); 00397 return -1; 00398 } 00399 ast_cli_register(&cli_reload); 00400 ast_cli_register(&cli_status); 00401 ast_cli_register(&cli_refresh); 00402 return do_reload(1); 00403 }
static int dnsmgr_refresh | ( | struct ast_dnsmgr_entry * | entry, | |
int | verbose | |||
) | [static] |
Definition at line 189 of file dnsmgr.c.
References ast_get_ip_or_srv(), ast_log(), ast_mutex_lock, ast_mutex_unlock, ast_sockaddr_cmp(), ast_sockaddr_copy(), ast_sockaddr_port, ast_sockaddr_set_port, ast_sockaddr_stringify(), ast_strdupa, ast_verb, ast_dnsmgr_entry::changed, ast_dnsmgr_entry::data, ast_dnsmgr_entry::family, ast_sockaddr::len, ast_dnsmgr_entry::lock, LOG_NOTICE, ast_dnsmgr_entry::name, ast_dnsmgr_entry::result, ast_dnsmgr_entry::service, ast_sockaddr::ss, and ast_dnsmgr_entry::update_func.
Referenced by ast_dnsmgr_refresh(), and refresh_list().
00190 { 00191 struct ast_sockaddr tmp = { .len = 0, }; 00192 int changed = 0; 00193 00194 ast_mutex_lock(&entry->lock); 00195 00196 if (verbose) { 00197 ast_verb(3, "refreshing '%s'\n", entry->name); 00198 } 00199 00200 tmp.ss.ss_family = entry->family; 00201 if (!ast_get_ip_or_srv(&tmp, entry->name, entry->service)) { 00202 if (!ast_sockaddr_port(&tmp)) { 00203 ast_sockaddr_set_port(&tmp, ast_sockaddr_port(entry->result)); 00204 } 00205 if (ast_sockaddr_cmp(&tmp, entry->result)) { 00206 const char *old_addr = ast_strdupa(ast_sockaddr_stringify(entry->result)); 00207 const char *new_addr = ast_strdupa(ast_sockaddr_stringify(&tmp)); 00208 00209 if (entry->update_func) { 00210 entry->update_func(entry->result, &tmp, entry->data); 00211 } else { 00212 ast_log(LOG_NOTICE, "dnssrv: host '%s' changed from %s to %s\n", 00213 entry->name, old_addr, new_addr); 00214 00215 ast_sockaddr_copy(entry->result, &tmp); 00216 changed = entry->changed = 1; 00217 } 00218 } 00219 } 00220 00221 ast_mutex_unlock(&entry->lock); 00222 00223 return changed; 00224 }
int dnsmgr_reload | ( | void | ) |
Provided by dnsmgr.c
Definition at line 405 of file dnsmgr.c.
References do_reload().
00406 { 00407 return do_reload(0); 00408 }
void dnsmgr_start_refresh | ( | void | ) |
Provided by dnsmgr.c
Definition at line 287 of file dnsmgr.c.
References ast_sched_add_variable(), AST_SCHED_DEL, master_refresh_info, refresh_list(), and sched.
Referenced by main().
00288 { 00289 if (refresh_sched > -1) { 00290 AST_SCHED_DEL(sched, refresh_sched); 00291 refresh_sched = ast_sched_add_variable(sched, 100, refresh_list, &master_refresh_info, 1); 00292 } 00293 }
static void* do_refresh | ( | void * | data | ) | [static] |
Definition at line 248 of file dnsmgr.c.
References ast_sched_runq(), ast_sched_wait(), and sched.
Referenced by do_reload(), and load_module().
00249 { 00250 for (;;) { 00251 pthread_testcancel(); 00252 usleep((ast_sched_wait(sched)*1000)); 00253 pthread_testcancel(); 00254 ast_sched_runq(sched); 00255 } 00256 return NULL; 00257 }
static int do_reload | ( | int | loading | ) | [static] |
Definition at line 410 of file dnsmgr.c.
References ast_config_destroy(), ast_config_load2(), ast_log(), ast_mutex_lock, ast_mutex_unlock, ast_pthread_create_background, AST_PTHREADT_NULL, ast_sched_add_variable(), AST_SCHED_DEL, ast_true(), ast_variable_retrieve(), config, CONFIG_FLAG_FILEUNCHANGED, config_flags, CONFIG_STATUS_FILEINVALID, CONFIG_STATUS_FILEMISSING, CONFIG_STATUS_FILEUNCHANGED, do_refresh(), enabled, EVENT_FLAG_SYSTEM, LOG_ERROR, LOG_NOTICE, LOG_WARNING, manager_event, master_refresh_info, REFRESH_DEFAULT, refresh_interval, refresh_list(), and sched.
00411 { 00412 struct ast_config *config; 00413 struct ast_flags config_flags = { loading ? 0 : CONFIG_FLAG_FILEUNCHANGED }; 00414 const char *interval_value; 00415 const char *enabled_value; 00416 int interval; 00417 int was_enabled; 00418 int res = -1; 00419 00420 config = ast_config_load2("dnsmgr.conf", "dnsmgr", config_flags); 00421 if (config == CONFIG_STATUS_FILEMISSING || config == CONFIG_STATUS_FILEUNCHANGED || config == CONFIG_STATUS_FILEINVALID) { 00422 return 0; 00423 } 00424 00425 /* ensure that no refresh cycles run while the reload is in progress */ 00426 ast_mutex_lock(&refresh_lock); 00427 00428 /* reset defaults in preparation for reading config file */ 00429 refresh_interval = REFRESH_DEFAULT; 00430 was_enabled = enabled; 00431 enabled = 0; 00432 00433 AST_SCHED_DEL(sched, refresh_sched); 00434 00435 if (config) { 00436 if ((enabled_value = ast_variable_retrieve(config, "general", "enable"))) { 00437 enabled = ast_true(enabled_value); 00438 } 00439 if ((interval_value = ast_variable_retrieve(config, "general", "refreshinterval"))) { 00440 if (sscanf(interval_value, "%30d", &interval) < 1) 00441 ast_log(LOG_WARNING, "Unable to convert '%s' to a numeric value.\n", interval_value); 00442 else if (interval < 0) 00443 ast_log(LOG_WARNING, "Invalid refresh interval '%d' specified, using default\n", interval); 00444 else 00445 refresh_interval = interval; 00446 } 00447 ast_config_destroy(config); 00448 } 00449 00450 if (enabled && refresh_interval) 00451 ast_log(LOG_NOTICE, "Managed DNS entries will be refreshed every %d seconds.\n", refresh_interval); 00452 00453 /* if this reload enabled the manager, create the background thread 00454 if it does not exist */ 00455 if (enabled) { 00456 if (!was_enabled && (refresh_thread == AST_PTHREADT_NULL)) { 00457 if (ast_pthread_create_background(&refresh_thread, NULL, do_refresh, NULL) < 0) { 00458 ast_log(LOG_ERROR, "Unable to start refresh thread.\n"); 00459 } 00460 } 00461 /* make a background refresh happen right away */ 00462 refresh_sched = ast_sched_add_variable(sched, 100, refresh_list, &master_refresh_info, 1); 00463 res = 0; 00464 } 00465 /* if this reload disabled the manager and there is a background thread, 00466 kill it */ 00467 else if (!enabled && was_enabled && (refresh_thread != AST_PTHREADT_NULL)) { 00468 /* wake up the thread so it will exit */ 00469 pthread_cancel(refresh_thread); 00470 pthread_kill(refresh_thread, SIGURG); 00471 pthread_join(refresh_thread, NULL); 00472 refresh_thread = AST_PTHREADT_NULL; 00473 res = 0; 00474 } 00475 else 00476 res = 0; 00477 00478 ast_mutex_unlock(&refresh_lock); 00479 manager_event(EVENT_FLAG_SYSTEM, "Reload", "Module: DNSmgr\r\nStatus: %s\r/nMessage: DNSmgr reload Requested\r\n", enabled ? "Enabled" : "Disabled"); 00480 00481 return res; 00482 }
static char* handle_cli_refresh | ( | struct ast_cli_entry * | e, | |
int | cmd, | |||
struct ast_cli_args * | a | |||
) | [static] |
Definition at line 316 of file dnsmgr.c.
References ast_cli_args::argc, ast_cli_args::argv, ast_cli(), CLI_GENERATE, CLI_INIT, CLI_SHOWUSAGE, CLI_SUCCESS, ast_cli_entry::command, enabled, refresh_info::entries, ast_cli_args::fd, refresh_info::filter, refresh_list(), refresh_info::regex_present, and ast_cli_entry::usage.
00317 { 00318 struct refresh_info info = { 00319 .entries = &entry_list, 00320 .verbose = 1, 00321 }; 00322 switch (cmd) { 00323 case CLI_INIT: 00324 e->command = "dnsmgr refresh"; 00325 e->usage = 00326 "Usage: dnsmgr refresh [pattern]\n" 00327 " Peforms an immediate refresh of the managed DNS entries.\n" 00328 " Optional regular expression pattern is used to filter the entries to refresh.\n"; 00329 return NULL; 00330 case CLI_GENERATE: 00331 return NULL; 00332 } 00333 00334 if (!enabled) { 00335 ast_cli(a->fd, "DNS Manager is disabled.\n"); 00336 return 0; 00337 } 00338 00339 if (a->argc > 3) { 00340 return CLI_SHOWUSAGE; 00341 } 00342 00343 if (a->argc == 3) { 00344 if (regcomp(&info.filter, a->argv[2], REG_EXTENDED | REG_NOSUB)) { 00345 return CLI_SHOWUSAGE; 00346 } else { 00347 info.regex_present = 1; 00348 } 00349 } 00350 00351 refresh_list(&info); 00352 00353 if (info.regex_present) { 00354 regfree(&info.filter); 00355 } 00356 00357 return CLI_SUCCESS; 00358 }
static char* handle_cli_reload | ( | struct ast_cli_entry * | e, | |
int | cmd, | |||
struct ast_cli_args * | a | |||
) | [static] |
Definition at line 297 of file dnsmgr.c.
References ast_cli_args::argc, CLI_GENERATE, CLI_INIT, CLI_SHOWUSAGE, CLI_SUCCESS, ast_cli_entry::command, do_reload(), and ast_cli_entry::usage.
00298 { 00299 switch (cmd) { 00300 case CLI_INIT: 00301 e->command = "dnsmgr reload"; 00302 e->usage = 00303 "Usage: dnsmgr reload\n" 00304 " Reloads the DNS manager configuration.\n"; 00305 return NULL; 00306 case CLI_GENERATE: 00307 return NULL; 00308 } 00309 if (a->argc > 2) 00310 return CLI_SHOWUSAGE; 00311 00312 do_reload(0); 00313 return CLI_SUCCESS; 00314 }
static char* handle_cli_status | ( | struct ast_cli_entry * | e, | |
int | cmd, | |||
struct ast_cli_args * | a | |||
) | [static] |
Definition at line 360 of file dnsmgr.c.
References ast_cli_args::argc, ast_cli(), AST_RWLIST_RDLOCK, AST_RWLIST_TRAVERSE, AST_RWLIST_UNLOCK, CLI_GENERATE, CLI_INIT, CLI_SHOWUSAGE, CLI_SUCCESS, ast_cli_entry::command, enabled, ast_cli_args::fd, ast_dnsmgr_entry::list, refresh_interval, and ast_cli_entry::usage.
00361 { 00362 int count = 0; 00363 struct ast_dnsmgr_entry *entry; 00364 switch (cmd) { 00365 case CLI_INIT: 00366 e->command = "dnsmgr status"; 00367 e->usage = 00368 "Usage: dnsmgr status\n" 00369 " Displays the DNS manager status.\n"; 00370 return NULL; 00371 case CLI_GENERATE: 00372 return NULL; 00373 } 00374 00375 if (a->argc > 2) 00376 return CLI_SHOWUSAGE; 00377 00378 ast_cli(a->fd, "DNS Manager: %s\n", enabled ? "enabled" : "disabled"); 00379 ast_cli(a->fd, "Refresh Interval: %d seconds\n", refresh_interval); 00380 AST_RWLIST_RDLOCK(&entry_list); 00381 AST_RWLIST_TRAVERSE(&entry_list, entry, list) 00382 count++; 00383 AST_RWLIST_UNLOCK(&entry_list); 00384 ast_cli(a->fd, "Number of entries: %d\n", count); 00385 00386 return CLI_SUCCESS; 00387 }
static int internal_dnsmgr_lookup | ( | const char * | name, | |
struct ast_sockaddr * | result, | |||
struct ast_dnsmgr_entry ** | dnsmgr, | |||
const char * | service, | |||
dns_update_func | func, | |||
void * | data | |||
) | [static] |
Definition at line 136 of file dnsmgr.c.
References ast_dnsmgr_get_family(), ast_get_ip_or_srv(), ast_sockaddr_parse(), ast_strlen_zero(), ast_verb, enabled, ast_dnsmgr_entry::family, PARSE_PORT_FORBID, ast_dnsmgr_entry::result, and ast_sockaddr::ss.
Referenced by ast_dnsmgr_lookup(), and ast_dnsmgr_lookup_cb().
00137 { 00138 unsigned int family; 00139 00140 if (ast_strlen_zero(name) || !result || !dnsmgr) { 00141 return -1; 00142 } 00143 00144 if (*dnsmgr && !strcasecmp((*dnsmgr)->name, name)) { 00145 return 0; 00146 } 00147 00148 /* Lookup address family filter. */ 00149 family = result->ss.ss_family; 00150 00151 /* 00152 * If it's actually an IP address and not a name, there's no 00153 * need for a managed lookup. 00154 */ 00155 if (ast_sockaddr_parse(result, name, PARSE_PORT_FORBID)) { 00156 return 0; 00157 } 00158 00159 ast_verb(4, "doing dnsmgr_lookup for '%s'\n", name); 00160 00161 /* do a lookup now but add a manager so it will automagically get updated in the background */ 00162 ast_get_ip_or_srv(result, name, service); 00163 00164 /* if dnsmgr is not enable don't bother adding an entry */ 00165 if (!enabled) { 00166 return 0; 00167 } 00168 00169 ast_verb(3, "adding dns manager for '%s'\n", name); 00170 *dnsmgr = ast_dnsmgr_get_family(name, result, service, family); 00171 (*dnsmgr)->update_func = func; 00172 (*dnsmgr)->data = data; 00173 return !*dnsmgr; 00174 }
static int refresh_list | ( | const void * | data | ) | [static] |
Definition at line 259 of file dnsmgr.c.
References ast_log(), ast_mutex_trylock, ast_mutex_unlock, AST_RWLIST_RDLOCK, AST_RWLIST_TRAVERSE, AST_RWLIST_UNLOCK, ast_verb, dnsmgr_refresh(), refresh_info::entries, refresh_info::filter, ast_dnsmgr_entry::list, LOG_WARNING, ast_dnsmgr_entry::name, refresh_interval, refresh_info::regex_present, and refresh_info::verbose.
Referenced by dnsmgr_start_refresh(), do_reload(), and handle_cli_refresh().
00260 { 00261 struct refresh_info *info = (struct refresh_info *)data; 00262 struct ast_dnsmgr_entry *entry; 00263 00264 /* if a refresh or reload is already in progress, exit now */ 00265 if (ast_mutex_trylock(&refresh_lock)) { 00266 if (info->verbose) 00267 ast_log(LOG_WARNING, "DNS Manager refresh already in progress.\n"); 00268 return -1; 00269 } 00270 00271 ast_verb(3, "Refreshing DNS lookups.\n"); 00272 AST_RWLIST_RDLOCK(info->entries); 00273 AST_RWLIST_TRAVERSE(info->entries, entry, list) { 00274 if (info->regex_present && regexec(&info->filter, entry->name, 0, NULL, 0)) 00275 continue; 00276 00277 dnsmgr_refresh(entry, info->verbose); 00278 } 00279 AST_RWLIST_UNLOCK(info->entries); 00280 00281 ast_mutex_unlock(&refresh_lock); 00282 00283 /* automatically reschedule based on the interval */ 00284 return refresh_interval * 1000; 00285 }
struct ast_cli_entry cli_refresh = { .handler = handle_cli_refresh , .summary = "Performs an immediate refresh" ,__VA_ARGS__ } [static] |
struct ast_cli_entry cli_reload = { .handler = handle_cli_reload , .summary = "Reloads the DNS manager configuration" ,__VA_ARGS__ } [static] |
Definition at line 389 of file dnsmgr.c.
Referenced by dnsmgr_init(), load_module(), and unload_module().
struct ast_cli_entry cli_status = { .handler = handle_cli_status , .summary = "Display the DNS manager status" ,__VA_ARGS__ } [static] |
struct refresh_info master_refresh_info [static] |
Initial value:
{ .entries = &entry_list, .verbose = 0, }
Definition at line 87 of file dnsmgr.c.
Referenced by dnsmgr_start_refresh(), and do_reload().
int refresh_interval [static] |
Definition at line 78 of file dnsmgr.c.
Referenced by do_reload(), handle_cli_status(), and refresh_list().
ast_mutex_t refresh_lock = { PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP , NULL, 1 } [static] |
int refresh_sched = -1 [static] |
pthread_t refresh_thread = AST_PTHREADT_NULL [static] |
struct sched_context* sched [static] |