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 __MODULE_INFO_SECTION	__mod_info = { __MODULE_INFO_GLOBALS .name = AST_MODULE, .flags = AST_MODFLAG_GLOBAL_SYMBOLS , .description = "SNMP [Sub]Agent for Asterisk" , .key = ASTERISK_GPL_KEY , .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
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 33 of file res_snmp.c.

Function Documentation

static void __reg_module ( void ) [static]

Definition at line 121 of file res_snmp.c.

static void __unreg_module ( void ) [static]

Definition at line 121 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 45 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 96 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 110 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 __MODULE_INFO_SECTION __mod_info = { __MODULE_INFO_GLOBALS .name = AST_MODULE, .flags = AST_MODFLAG_GLOBAL_SYMBOLS , .description = "SNMP [Sub]Agent for Asterisk" , .key = ASTERISK_GPL_KEY , .buildopt_sum = AST_BUILDOPT_SUM, .load = load_module, .unload = unload_module, } [static]

Definition at line 121 of file res_snmp.c.

struct ast_module_info* ast_module_info = &__mod_info [static]

Definition at line 121 of file res_snmp.c.

int res_snmp_agentx_subagent

Definition at line 35 of file res_snmp.c.

Referenced by agent_thread().

int res_snmp_dont_stop

Definition at line 36 of file res_snmp.c.

Referenced by agent_thread().

int res_snmp_enabled

Definition at line 37 of file res_snmp.c.

pthread_t thread = AST_PTHREADT_NULL [static]