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partial implementation of channel list via snmp

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This commit is contained in:
Daniel Swarbrick 2011-01-28 22:32:14 +01:00
parent 9986f4ebf2
commit 068d36a5c9
4 changed files with 248 additions and 14 deletions
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84
src/mod/event_handlers/mod_snmp/FREESWITCH-MIB
View File

@ -107,4 +107,88 @@ maxSessionsPerSecond OBJECT-TYPE
"Maximum permissible sessions per second"
::= { systemStats 7 }
ChannelEntry ::= SEQUENCE {
chanUUID DisplayString,
chanDirection DisplayString,
chanCreated DisplayString,
chanName DisplayString,
chanState DisplayString,
chanCIDName DisplayString,
chanCIDNum DisplayString
}
channelList OBJECT-TYPE
SYNTAX SEQUENCE OF ChannelEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"A table containing a list of active channels"
::= { core 9 }
channelEntry OBJECT-TYPE
SYNTAX ChannelEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"A channel entry"
INDEX { chanIndex }
::= { channelList 1 }
chanUUID OBJECT-TYPE
SYNTAX DisplayString
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The channel UUID."
::= { channelEntry 1 }
chanDirection OBJECT-TYPE
SYNTAX DisplayString
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The channel direction."
::= { channelEntry 2 }
chanCreated OBJECT-TYPE
SYNTAX DisplayString
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"Channel creation timestamp."
::= { channelEntry 3 }
chanName OBJECT-TYPE
SYNTAX DisplayString
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The channel name."
::= { channelEntry 4 }
chanState OBJECT-TYPE
SYNTAX DisplayString
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The channel state."
::= { channelEntry 5 }
chanCIDName OBJECT-TYPE
SYNTAX DisplayString
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The channel caller ID name."
::= { channelEntry 6 }
chanCIDNum OBJECT-TYPE
SYNTAX DisplayString
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The channel caller ID number."
::= { channelEntry 7 }
END

2
src/mod/event_handlers/mod_snmp/mod_snmp.c
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@ -109,7 +109,7 @@ SWITCH_MODULE_LOAD_FUNCTION(mod_snmp_load)
*/
netsnmp_ds_set_int(NETSNMP_DS_APPLICATION_ID, NETSNMP_DS_AGENT_AGENTX_PING_INTERVAL, 2);
init_subagent();
init_subagent(pool);
init_snmp("mod_snmp");
return status;

154
src/mod/event_handlers/mod_snmp/subagent.c
View File

@ -36,17 +36,10 @@
#include <net-snmp/agent/net-snmp-agent-includes.h>
#include "subagent.h"
void init_subagent(void)
{
static oid identity_oid[] = { 1,3,6,1,4,1,27880,1,1 };
static oid systemStats_oid[] = { 1,3,6,1,4,1,27880,1,2 };
DEBUGMSGTL(("init_subagent", "Initializing\n"));
netsnmp_register_scalar_group(netsnmp_create_handler_registration("identity", handle_identity, identity_oid, OID_LENGTH(identity_oid), HANDLER_CAN_RONLY), 1, 2);
netsnmp_register_scalar_group(netsnmp_create_handler_registration("systemStats", handle_systemStats, systemStats_oid, OID_LENGTH(systemStats_oid), HANDLER_CAN_RONLY), 1, 7);
}
netsnmp_table_registration_info *ch_table_info;
netsnmp_tdata *ch_table;
netsnmp_handler_registration *ch_reginfo;
uint32_t idx;
static int sql_count_callback(void *pArg, int argc, char **argv, char **columnNames)
@ -57,6 +50,94 @@ static int sql_count_callback(void *pArg, int argc, char **argv, char **columnNa
}
static int channelList_callback(void *pArg, int argc, char **argv, char **columnNames)
{
chan_entry_t *entry;
netsnmp_tdata_row *row;
switch_zmalloc(entry, sizeof(chan_entry_t));
if (!entry)
return 0;
row = netsnmp_tdata_create_row();
if (!row) {
switch_safe_free(entry);
return 0;
}
row->data = entry;
entry->idx = idx++;
strncpy(entry->uuid, argv[0], sizeof(entry->uuid));
strncpy(entry->direction, argv[1], sizeof(entry->direction));
strncpy(entry->created, argv[2], sizeof(entry->created));
strncpy(entry->name, argv[4], sizeof(entry->name));
strncpy(entry->state, argv[5], sizeof(entry->state));
strncpy(entry->cid_name, argv[6], sizeof(entry->cid_name));
strncpy(entry->cid_num, argv[7], sizeof(entry->cid_num));
netsnmp_tdata_row_add_index(row, ASN_INTEGER, &entry->idx, sizeof(entry->idx));
netsnmp_tdata_add_row(ch_table, row);
return 0;
}
void channelList_free(netsnmp_cache *cache, void *magic)
{
netsnmp_tdata_row *row = netsnmp_tdata_row_first(ch_table);
/* Delete table rows one by one */
while (row) {
netsnmp_tdata_remove_and_delete_row(ch_table, row);
switch_safe_free(row->data);
row = netsnmp_tdata_row_first(ch_table);
}
}
int channelList_load(netsnmp_cache *cache, void *vmagic)
{
switch_cache_db_handle_t *dbh;
char sql[1024] = "", hostname[256] = "";
channelList_free(cache, NULL);
if (switch_core_db_handle(&dbh) != SWITCH_STATUS_SUCCESS) {
return 0;
}
idx = 1;
gethostname(hostname, sizeof(hostname));
sprintf(sql, "SELECT * FROM channels WHERE hostname='%s' ORDER BY created_epoch", hostname);
switch_cache_db_execute_sql_callback(dbh, sql, channelList_callback, NULL, NULL);
switch_cache_db_release_db_handle(&dbh);
return 0;
}
void init_subagent(switch_memory_pool_t *pool)
{
static oid identity_oid[] = { 1,3,6,1,4,1,27880,1,1 };
static oid systemStats_oid[] = { 1,3,6,1,4,1,27880,1,2 };
static oid channelList_oid[] = { 1,3,6,1,4,1,27880,1,9 };
DEBUGMSGTL(("init_subagent", "mod_snmp subagent initializing\n"));
netsnmp_register_scalar_group(netsnmp_create_handler_registration("identity", handle_identity, identity_oid, OID_LENGTH(identity_oid), HANDLER_CAN_RONLY), 1, 2);
netsnmp_register_scalar_group(netsnmp_create_handler_registration("systemStats", handle_systemStats, systemStats_oid, OID_LENGTH(systemStats_oid), HANDLER_CAN_RONLY), 1, 7);
ch_table_info = switch_core_alloc(pool, sizeof(netsnmp_table_registration_info));
netsnmp_table_helper_add_index(ch_table_info, ASN_INTEGER);
ch_table_info->min_column = 1;
ch_table_info->max_column = 7;
ch_table = netsnmp_tdata_create_table("channelList", 0);
ch_reginfo = netsnmp_create_handler_registration("channelList", handle_channelList, channelList_oid, OID_LENGTH(channelList_oid), HANDLER_CAN_RONLY);
netsnmp_tdata_register(ch_reginfo, ch_table, ch_table_info);
netsnmp_inject_handler(ch_reginfo, netsnmp_get_cache_handler(5, channelList_load, channelList_free, channelList_oid, OID_LENGTH(channelList_oid)));
}
int handle_identity(netsnmp_mib_handler *handler, netsnmp_handler_registration *reginfo, netsnmp_agent_request_info *reqinfo, netsnmp_request_info *requests)
{
netsnmp_request_info *request = NULL;
@ -97,7 +178,7 @@ int handle_systemStats(netsnmp_mib_handler *handler, netsnmp_handler_registratio
netsnmp_request_info *request = NULL;
oid subid;
switch_time_t uptime;
uint32_t int_val;
uint32_t int_val = 0;
switch(reqinfo->mode) {
case MODE_GET:
@ -160,6 +241,55 @@ int handle_systemStats(netsnmp_mib_handler *handler, netsnmp_handler_registratio
}
int handle_channelList(netsnmp_mib_handler *handler, netsnmp_handler_registration *reginfo, netsnmp_agent_request_info *reqinfo, netsnmp_request_info *requests)
{
netsnmp_request_info *request;
netsnmp_table_request_info *table_info;
chan_entry_t *entry;
switch (reqinfo->mode) {
case MODE_GET:
for (request = requests; request; request = request->next) {
table_info = netsnmp_extract_table_info(request);
entry = (chan_entry_t *) netsnmp_tdata_extract_entry(request);
switch (table_info->colnum) {
case CH_UUID:
snmp_set_var_typed_value(request->requestvb, ASN_OCTET_STR, (u_char *) entry->uuid, strlen(entry->uuid));
break;
case CH_DIRECTION:
snmp_set_var_typed_value(request->requestvb, ASN_OCTET_STR, (u_char *) entry->direction, strlen(entry->direction));
break;
case CH_CREATED:
snmp_set_var_typed_value(request->requestvb, ASN_OCTET_STR, (u_char *) entry->created, strlen(entry->created));
break;
case CH_NAME:
snmp_set_var_typed_value(request->requestvb, ASN_OCTET_STR, (u_char *) entry->name, strlen(entry->name));
break;
case CH_STATE:
snmp_set_var_typed_value(request->requestvb, ASN_OCTET_STR, (u_char *) entry->state, strlen(entry->state));
break;
case CH_CID_NAME:
snmp_set_var_typed_value(request->requestvb, ASN_OCTET_STR, (u_char *) entry->cid_name, strlen(entry->cid_name));
break;
case CH_CID_NUM:
snmp_set_var_typed_value(request->requestvb, ASN_OCTET_STR, (u_char *) entry->cid_num, strlen(entry->cid_num));
break;
default:
snmp_log(LOG_WARNING, "Unregistered OID-suffix requested (%d)\n", table_info->colnum);
netsnmp_set_request_error(reqinfo, request, SNMP_NOSUCHOBJECT);
}
}
break;
default:
/* we should never get here, so this is a really bad error */
snmp_log(LOG_ERR, "Unknown mode (%d) in handle_foo\n", reqinfo->mode );
return SNMP_ERR_GENERR;
}
return SNMP_ERR_NOERROR;
}
/* For Emacs:
* Local Variables:

22
src/mod/event_handlers/mod_snmp/subagent.h
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@ -14,9 +14,29 @@
#define SS_SESSIONS_PER_SECOND 6
#define SS_MAX_SESSIONS_PER_SECOND 7
/* .1.3.6.1.4.1.27880.1.9 */
#define CH_UUID 1
#define CH_DIRECTION 2
#define CH_CREATED 3
#define CH_NAME 4
#define CH_STATE 5
#define CH_CID_NAME 6
#define CH_CID_NUM 7
void init_subagent(void);
typedef struct {
uint32_t idx;
char uuid[38];
char direction[32];
char created[128];
char name[1024];
char state[64];
char cid_name[1024];
char cid_num[256];
} chan_entry_t;
void init_subagent(switch_memory_pool_t *pool);
Netsnmp_Node_Handler handle_identity;
Netsnmp_Node_Handler handle_systemStats;
Netsnmp_Node_Handler handle_channelList;
#endif /* subagent_H */