117 lines
3.0 KiB
C
117 lines
3.0 KiB
C
#include <net-snmp/net-snmp-config.h>
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#include <net-snmp/types.h>
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#include <net-snmp/library/snmpAliasDomain.h>
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#include <stdio.h>
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#include <sys/types.h>
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#include <errno.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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#if HAVE_STDLIB_H
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#include <stdlib.h>
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#endif
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#if HAVE_UNISTD_H
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#include <unistd.h>
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#endif
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#if HAVE_DMALLOC_H
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#include <dmalloc.h>
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#endif
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#include <net-snmp/net-snmp-includes.h>
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#include <net-snmp/types.h>
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#include <net-snmp/output_api.h>
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#include <net-snmp/utilities.h>
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#include <net-snmp/config_api.h>
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oid netsnmp_snmpALIASDomain[] = { 1,3,6,1,4,1,8072,3,3,7 };
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static netsnmp_tdomain aliasDomain;
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/* simple storage mechanism */
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static netsnmp_data_list *alias_memory = NULL;
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#ifdef HAVE_DMALLOC_H
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static void free_wrapper(void * p)
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{
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free(p);
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}
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#else
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#define free_wrapper free
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#endif
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/* An alias parser */
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void
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parse_alias_config(const char *token, char *line) {
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char aliasname[SPRINT_MAX_LEN];
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char transportdef[SPRINT_MAX_LEN];
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/* copy the first word (the alias) out and then assume the rest is
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transport */
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line = copy_nword(line, aliasname, sizeof(aliasname));
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line = copy_nword(line, transportdef, sizeof(transportdef));
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if (line)
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config_perror("more data than expected");
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netsnmp_data_list_add_node(&alias_memory,
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netsnmp_create_data_list(aliasname,
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strdup(transportdef),
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&free_wrapper));
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}
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void
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free_alias_config(void) {
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netsnmp_free_all_list_data(alias_memory);
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alias_memory = NULL;
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}
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/*
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* Open a ALIAS-based transport for SNMP. Local is TRUE if addr is the local
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* address to bind to (i.e. this is a server-type session); otherwise addr is
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* the remote address to send things to.
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*/
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netsnmp_transport *
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netsnmp_alias_create_tstring(const char *str, int local,
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const char *default_target)
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{
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const char *aliasdata;
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aliasdata = (const char*)netsnmp_get_list_data(alias_memory, str);
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if (!aliasdata) {
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snmp_log(LOG_ERR, "No alias found for %s\n", str);
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return NULL;
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}
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return netsnmp_tdomain_transport(aliasdata,local,default_target);
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}
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netsnmp_transport *
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netsnmp_alias_create_ostring(const void *o, size_t o_len, int local)
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{
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fprintf(stderr, "make ostring\n");
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return NULL;
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}
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void
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netsnmp_alias_ctor(void)
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{
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aliasDomain.name = netsnmp_snmpALIASDomain;
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aliasDomain.name_length = sizeof(netsnmp_snmpALIASDomain) / sizeof(oid);
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aliasDomain.prefix = (const char **)calloc(2, sizeof(char *));
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aliasDomain.prefix[0] = "alias";
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aliasDomain.f_create_from_tstring = NULL;
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aliasDomain.f_create_from_tstring_new = netsnmp_alias_create_tstring;
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aliasDomain.f_create_from_ostring = netsnmp_alias_create_ostring;
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netsnmp_tdomain_register(&aliasDomain);
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register_config_handler("snmp", "alias", parse_alias_config,
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free_alias_config, "NAME TRANSPORT_DEFINITION");
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}
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