SNMP Agent / SubAgent support for Asterisk. More...

#include "asterisk.h"
#include "asterisk/channel.h"
#include "asterisk/module.h"
#include "snmp/agent.h"

Include dependency graph for res_snmp.c:

Defines
#define	MODULE_DESCRIPTION "SNMP [Sub]Agent for Asterisk"
Functions
static void	__reg_module (void)
static void	__unreg_module (void)
static int	load_config (void)
	Load res_snmp.conf config file.
static int	load_module (void)
static int	unload_module (void)
Variables
static struct ast_module_info	__mod_info = { .name = AST_MODULE, .flags = AST_MODFLAG_DEFAULT , .description = "SNMP [Sub]Agent for Asterisk" , .key = "This paragraph is copyright (c) 2006 by Digium, Inc. \In order for your module to load, it must return this \key via a function called \"key\". Any code which \includes this paragraph must be licensed under the GNU \General Public License version 2 or later (at your \option). In addition to Digium's general reservations \of rights, Digium expressly reserves the right to \allow other parties to license this paragraph under \different terms. Any use of Digium, Inc. trademarks or \logos (including \"Asterisk\" or \"Digium\") without \express written permission of Digium, Inc. is prohibited.\n" , .buildopt_sum = AST_BUILDOPT_SUM, .load = load_module, .unload = unload_module, }
static struct ast_module_info *	ast_module_info = &__mod_info
int	res_snmp_agentx_subagent
int	res_snmp_dont_stop
static int	res_snmp_enabled
static pthread_t	thread = AST_PTHREADT_NULL

Detailed Description

SNMP Agent / SubAgent support for Asterisk.

Author:: Thorsten Lockert <tholo@voop.as>

ExtRef:: Uses the Net-SNMP libraries available at http://net-snmp.sourceforge.net/

Definition in file res_snmp.c.

Define Documentation

#define MODULE_DESCRIPTION "SNMP [Sub]Agent for Asterisk"

Definition at line 34 of file res_snmp.c.

Function Documentation

static void __reg_module ( void ) [static]

Definition at line 122 of file res_snmp.c.

static void __unreg_module ( void ) [static]

Definition at line 122 of file res_snmp.c.

static int load_config ( void ) [static]

Load res_snmp.conf config file.

Returns:: 1 on load, 0 file does not exist

Definition at line 46 of file res_snmp.c.

References ast_category_browse(), ast_config_destroy(), ast_config_load, ast_false(), ast_log(), ast_true(), ast_variable_browse(), CONFIG_STATUS_FILEINVALID, CONFIG_STATUS_FILEMISSING, LOG_ERROR, LOG_WARNING, ast_variable::name, ast_variable::next, ast_variable::value, and var.

Referenced by load_module().

{
   struct ast_variable *var;
   struct ast_config *cfg;
   struct ast_flags config_flags = { 0 };
   char *cat;

   res_snmp_enabled = 0;
   res_snmp_agentx_subagent = 1;
   cfg = ast_config_load("res_snmp.conf", config_flags);
   if (cfg == CONFIG_STATUS_FILEMISSING || cfg == CONFIG_STATUS_FILEINVALID) {
      ast_log(LOG_WARNING, "Could not load res_snmp.conf\n");
      return 0;
   }
   cat = ast_category_browse(cfg, NULL);
   while (cat) {
      var = ast_variable_browse(cfg, cat);

      if (strcasecmp(cat, "general") == 0) {
         while (var) {
            if (strcasecmp(var->name, "subagent") == 0) {
               if (ast_true(var->value))
                  res_snmp_agentx_subagent = 1;
               else if (ast_false(var->value))
                  res_snmp_agentx_subagent = 0;
               else {
                  ast_log(LOG_ERROR, "Value '%s' does not evaluate to true or false.\n", var->value);
                  ast_config_destroy(cfg);
                  return 1;
               }
            } else if (strcasecmp(var->name, "enabled") == 0) {
               res_snmp_enabled = ast_true(var->value);
            } else {
               ast_log(LOG_ERROR, "Unrecognized variable '%s' in category '%s'\n", var->name, cat);
               ast_config_destroy(cfg);
               return 1;
            }
            var = var->next;
         }
      } else {
         ast_log(LOG_ERROR, "Unrecognized category '%s'\n", cat);
         ast_config_destroy(cfg);
         return 1;
      }

      cat = ast_category_browse(cfg, cat);
   }
   ast_config_destroy(cfg);
   return 1;
}

static int load_module ( void ) [static]

Definition at line 97 of file res_snmp.c.

References agent_thread(), AST_MODULE_LOAD_DECLINE, ast_pthread_create_background, ast_verb, and load_config().

{
   if(!load_config())
      return AST_MODULE_LOAD_DECLINE;

   ast_verb(1, "Loading [Sub]Agent Module\n");

   res_snmp_dont_stop = 1;
   if (res_snmp_enabled)
      return ast_pthread_create_background(&thread, NULL, agent_thread, NULL);
   else
      return 0;
}

static int unload_module ( void ) [static]

Definition at line 111 of file res_snmp.c.

References AST_PTHREADT_NULL, and ast_verb.

{
   ast_verb(1, "Unloading [Sub]Agent Module\n");

   res_snmp_dont_stop = 0;
   return ((thread != AST_PTHREADT_NULL) ? pthread_join(thread, NULL) : 0);
}

Variable Documentation

struct ast_module_info __mod_info = { .name = AST_MODULE, .flags = AST_MODFLAG_DEFAULT , .description = "SNMP [Sub]Agent for Asterisk" , .key = "This paragraph is copyright (c) 2006 by Digium, Inc. \In order for your module to load, it must return this \key via a function called \"key\". Any code which \includes this paragraph must be licensed under the GNU \General Public License version 2 or later (at your \option). In addition to Digium's general reservations \of rights, Digium expressly reserves the right to \allow other parties to license this paragraph under \different terms. Any use of Digium, Inc. trademarks or \logos (including \"Asterisk\" or \"Digium\") without \express written permission of Digium, Inc. is prohibited.\n" , .buildopt_sum = AST_BUILDOPT_SUM, .load = load_module, .unload = unload_module, } [static]

Definition at line 122 of file res_snmp.c.

struct ast_module_info* ast_module_info = &__mod_info [static]

Definition at line 122 of file res_snmp.c.

int res_snmp_agentx_subagent

Definition at line 36 of file res_snmp.c.

Referenced by agent_thread().

int res_snmp_dont_stop

Definition at line 37 of file res_snmp.c.

Referenced by agent_thread().

int res_snmp_enabled [static]

Definition at line 38 of file res_snmp.c.

pthread_t thread = AST_PTHREADT_NULL [static]