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#include <net-snmp/net-snmp-config.h>
#if HAVE_STRING_H
#include <string.h>
#else
#include <strings.h>
#endif
#include <net-snmp/net-snmp-includes.h>
#include <net-snmp/agent/net-snmp-agent-includes.h>
#include <net-snmp/agent/table.h>
#include <net-snmp/agent/table_iterator.h>
#include "vacm_context.h"
static oid vacm_context_oid[] = { 1, 3, 6, 1, 6, 3, 16, 1, 1 };
#define CONTEXTNAME_COLUMN 1
/*
* return the index data from the first node in the agent's
* subtree_context_cache list.
*/
netsnmp_variable_list *
get_first_context(void **my_loop_context, void **my_data_context,
netsnmp_variable_list * put_data,
netsnmp_iterator_info *iinfo)
{
subtree_context_cache *context_ptr;
context_ptr = get_top_context_cache();
if (!context_ptr)
return NULL;
*my_loop_context = context_ptr;
*my_data_context = context_ptr;
snmp_set_var_value(put_data, context_ptr->context_name,
strlen(context_ptr->context_name));
return put_data;
}
/*
* return the next index data from the first node in the agent's
* subtree_context_cache list.
*/
netsnmp_variable_list *
get_next_context(void **my_loop_context,
void **my_data_context,
netsnmp_variable_list * put_data,
netsnmp_iterator_info *iinfo)
{
subtree_context_cache *context_ptr;
if (!my_loop_context || !*my_loop_context)
return NULL;
context_ptr = (subtree_context_cache *) (*my_loop_context);
context_ptr = context_ptr->next;
*my_loop_context = context_ptr;
*my_data_context = context_ptr;
if (!context_ptr)
return NULL;
snmp_set_var_value(put_data, context_ptr->context_name,
strlen(context_ptr->context_name));
return put_data;
}
void
init_vacm_context(void)
{
/*
* table vacm_context
*/
netsnmp_handler_registration *my_handler;
netsnmp_table_registration_info *table_info;
netsnmp_iterator_info *iinfo;
my_handler = netsnmp_create_handler_registration("vacm_context",
vacm_context_handler,
vacm_context_oid,
sizeof
(vacm_context_oid) /
sizeof(oid),
HANDLER_CAN_RONLY);
if (!my_handler)
return;
table_info = SNMP_MALLOC_TYPEDEF(netsnmp_table_registration_info);
iinfo = SNMP_MALLOC_TYPEDEF(netsnmp_iterator_info);
if (!table_info || !iinfo) {
SNMP_FREE(table_info);
SNMP_FREE(iinfo);
SNMP_FREE(my_handler);
return;
}
netsnmp_table_helper_add_index(table_info, ASN_OCTET_STR)
table_info->min_column = 1;
table_info->max_column = 1;
iinfo->get_first_data_point = get_first_context;
iinfo->get_next_data_point = get_next_context;
iinfo->table_reginfo = table_info;
netsnmp_register_table_iterator2(my_handler, iinfo);
}
/*
* returns a list of known context names
*/
int
vacm_context_handler(netsnmp_mib_handler *handler,
netsnmp_handler_registration *reginfo,
netsnmp_agent_request_info *reqinfo,
netsnmp_request_info *requests)
{
subtree_context_cache *context_ptr;
for(; requests; requests = requests->next) {
netsnmp_variable_list *var = requests->requestvb;
if (requests->processed != 0)
continue;
context_ptr = (subtree_context_cache *)
netsnmp_extract_iterator_context(requests);
if (context_ptr == NULL) {
snmp_log(LOG_ERR,
"vacm_context_handler called without data\n");
continue;
}
switch (reqinfo->mode) {
case MODE_GET:
/*
* if here we should have a context_ptr passed in already
*/
/*
* only one column should ever reach us, so don't check it
*/
snmp_set_var_typed_value(var, ASN_OCTET_STR,
context_ptr->context_name,
strlen(context_ptr->context_name));
break;
default:
/*
* We should never get here, getnext already have been
* handled by the table_iterator and we're read_only
*/
snmp_log(LOG_ERR,
"vacm_context table accessed as mode=%d. We're improperly registered!",
reqinfo->mode);
break;
}
}
return SNMP_ERR_NOERROR;
}
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