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Viewing changes to agent/mibgroup/mibII/vacm_context.c

  • Committer: Bazaar Package Importer
  • Author(s): Martin Pitt
  • Date: 2004-09-13 12:06:21 UTC
  • Revision ID: james.westby@ubuntu.com-20040913120621-g952ntonlleihcvm
Tags: upstream-5.1.1
Import upstream version 5.1.1

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agent/mibgroup/mibII/vacm_context.c
 
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#include <net-snmp/net-snmp-config.h>
 
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#if HAVE_STRING_H
 
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#include <string.h>
 
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#else
 
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#include <strings.h>
 
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#endif
 
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#include <net-snmp/net-snmp-includes.h>
 
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#include <net-snmp/agent/net-snmp-agent-includes.h>
 
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#include <net-snmp/agent/table.h>
 
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#include <net-snmp/agent/table_iterator.h>
 
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#include "vacm_context.h"
 
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static oid      vacm_context_oid[] = { 1, 3, 6, 1, 6, 3, 16, 1, 1 };
 
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#define CONTEXTNAME_COLUMN 1
 
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/*
 
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 * return the index data from the first node in the agent's
 
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 * subtree_context_cache list.
 
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 */
 
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netsnmp_variable_list *
 
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get_first_context(void **my_loop_context, void **my_data_context,
 
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                  netsnmp_variable_list * put_data,
 
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                  netsnmp_iterator_info *iinfo)
 
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{
 
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    subtree_context_cache *context_ptr;
 
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    context_ptr = get_top_context_cache();
 
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    if (!context_ptr)
 
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        return NULL;
 
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    *my_loop_context = context_ptr;
 
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    *my_data_context = context_ptr;
 
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    snmp_set_var_value(put_data, context_ptr->context_name,
 
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                       strlen(context_ptr->context_name));
 
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    return put_data;
 
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}
 
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/*
 
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 * return the next index data from the first node in the agent's
 
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 * subtree_context_cache list.
 
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 */
 
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netsnmp_variable_list *
 
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get_next_context(void **my_loop_context,
 
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                 void **my_data_context,
 
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                 netsnmp_variable_list * put_data,
 
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                 netsnmp_iterator_info *iinfo)
 
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{
 
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    subtree_context_cache *context_ptr;
 
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    if (!my_loop_context || !*my_loop_context)
 
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        return NULL;
 
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    context_ptr = (subtree_context_cache *) (*my_loop_context);
 
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    context_ptr = context_ptr->next;
 
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    *my_loop_context = context_ptr;
 
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    *my_data_context = context_ptr;
 
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    if (!context_ptr)
 
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        return NULL;
 
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    snmp_set_var_value(put_data, context_ptr->context_name,
 
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                       strlen(context_ptr->context_name));
 
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    return put_data;
 
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}
 
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void
 
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init_vacm_context(void)
 
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{
 
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    /*
 
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     * table vacm_context
 
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     */
 
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    netsnmp_handler_registration *my_handler;
 
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    netsnmp_table_registration_info *table_info;
 
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    netsnmp_iterator_info *iinfo;
 
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    my_handler = netsnmp_create_handler_registration("vacm_context",
 
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                                                     vacm_context_handler,
 
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                                                     vacm_context_oid,
 
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                                                     sizeof
 
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                                                     (vacm_context_oid) /
 
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                                                     sizeof(oid),
 
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                                                     HANDLER_CAN_RONLY);
 
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    if (!my_handler)
 
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        return;
 
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    table_info = SNMP_MALLOC_TYPEDEF(netsnmp_table_registration_info);
 
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    iinfo = SNMP_MALLOC_TYPEDEF(netsnmp_iterator_info);
 
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    if (!table_info || !iinfo)
 
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        return;
 
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    netsnmp_table_helper_add_index(table_info, ASN_OCTET_STR)
 
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        table_info->min_column = 1;
 
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    table_info->max_column = 1;
 
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    iinfo->get_first_data_point = get_first_context;
 
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    iinfo->get_next_data_point = get_next_context;
 
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    iinfo->table_reginfo = table_info;
 
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    netsnmp_register_table_iterator(my_handler, iinfo);
 
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}
 
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/*
 
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 * returns a list of known context names
 
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 */
 
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int
 
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vacm_context_handler(netsnmp_mib_handler *handler,
 
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                     netsnmp_handler_registration *reginfo,
 
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                     netsnmp_agent_request_info *reqinfo,
 
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                     netsnmp_request_info *requests)
 
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{
 
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    subtree_context_cache *context_ptr;
 
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    for(; requests; requests = requests->next) {
 
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        netsnmp_variable_list *var = requests->requestvb;
 
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        if (requests->processed != 0)
 
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            continue;
 
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        context_ptr = (subtree_context_cache *)
 
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            netsnmp_extract_iterator_context(requests);
 
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        if (context_ptr == NULL) {
 
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            snmp_log(LOG_ERR,
 
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                     "vacm_context_handler called without data\n");
 
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            continue;
 
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        }
 
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        switch (reqinfo->mode) {
 
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        case MODE_GET:
 
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            /*
 
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             * if here we should have a context_ptr passed in already 
 
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             */
 
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            /*
 
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             * only one column should ever reach us, so don't check it 
 
142
             */
 
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            snmp_set_var_typed_value(var, ASN_OCTET_STR,
 
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                                     context_ptr->context_name,
 
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                                     strlen(context_ptr->context_name));
 
146
 
 
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            break;
 
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        default:
 
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            /*
 
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             * We should never get here, getnext already have been
 
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             * handled by the table_iterator and we're read_only 
 
153
             */
 
154
            snmp_log(LOG_ERR,
 
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                     "vacm_context table accessed as mode=%d.  We're improperly registered!",
 
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                     reqinfo->mode);
 
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            break;
 
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159
 
 
160
        }
 
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    }
 
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    return SNMP_ERR_NOERROR;
 
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}