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