snmpget.c
上传用户:wxp200602
上传日期:2007-10-30
资源大小:4028k
文件大小:7k
- /*
- * snmpget.c - send snmp GET requests to a network entity.
- *
- */
- /***********************************************************************
- Copyright 1988, 1989, 1991, 1992 by Carnegie Mellon University
- All Rights Reserved
- Permission to use, copy, modify, and distribute this software and its
- documentation for any purpose and without fee is hereby granted,
- provided that the above copyright notice appear in all copies and that
- both that copyright notice and this permission notice appear in
- supporting documentation, and that the name of CMU not be
- used in advertising or publicity pertaining to distribution of the
- software without specific, written prior permission.
- CMU DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
- ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
- CMU BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
- ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
- WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
- ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
- SOFTWARE.
- ******************************************************************/
- #include <net-snmp/net-snmp-config.h>
- #if HAVE_STDLIB_H
- #include <stdlib.h>
- #endif
- #if HAVE_UNISTD_H
- #include <unistd.h>
- #endif
- #if HAVE_STRING_H
- #include <string.h>
- #else
- #include <strings.h>
- #endif
- #include <sys/types.h>
- #if HAVE_NETINET_IN_H
- #include <netinet/in.h>
- #endif
- #include <stdio.h>
- #include <ctype.h>
- #if TIME_WITH_SYS_TIME
- # ifdef WIN32
- # include <sys/timeb.h>
- # else
- # include <sys/time.h>
- # endif
- # include <time.h>
- #else
- # if HAVE_SYS_TIME_H
- # include <sys/time.h>
- # else
- # include <time.h>
- # endif
- #endif
- #if HAVE_SYS_SELECT_H
- #include <sys/select.h>
- #endif
- #if HAVE_WINSOCK_H
- #include <winsock.h>
- #endif
- #if HAVE_NETDB_H
- #include <netdb.h>
- #endif
- #if HAVE_ARPA_INET_H
- #include <arpa/inet.h>
- #endif
- #include <net-snmp/utilities.h>
- #include <net-snmp/net-snmp-includes.h>
- int failures = 0;
- #define NETSNMP_DS_APP_DONT_FIX_PDUS 0
- static void
- optProc(int argc, char *const *argv, int opt)
- {
- switch (opt) {
- case 'C':
- while (*optarg) {
- switch (*optarg++) {
- case 'f':
- netsnmp_ds_toggle_boolean(NETSNMP_DS_APPLICATION_ID,
- NETSNMP_DS_APP_DONT_FIX_PDUS);
- break;
- default:
- fprintf(stderr, "Unknown flag passed to -C: %cn",
- optarg[-1]);
- exit(1);
- }
- }
- break;
- }
- }
- void
- usage(void)
- {
- fprintf(stderr, "USAGE: snmpget ");
- snmp_parse_args_usage(stderr);
- fprintf(stderr, " OID [OID]...nn");
- snmp_parse_args_descriptions(stderr);
- fprintf(stderr,
- " -C APPOPTSttSet various application specific behaviours:n");
- fprintf(stderr,
- "ttt f: do not fix errors and retry the requestn");
- }
- int
- main(int argc, char *argv[])
- {
- netsnmp_session session, *ss;
- netsnmp_pdu *pdu;
- netsnmp_pdu *response;
- netsnmp_variable_list *vars;
- int arg;
- int count;
- int current_name = 0;
- char *names[SNMP_MAX_CMDLINE_OIDS];
- oid name[MAX_OID_LEN];
- size_t name_length;
- int status;
- int exitval = 0;
- /*
- * get the common command line arguments
- */
- switch (arg = snmp_parse_args(argc, argv, &session, "C:", optProc)) {
- case -2:
- exit(0);
- case -1:
- usage();
- exit(1);
- default:
- break;
- }
- if (arg >= argc) {
- fprintf(stderr, "Missing object namen");
- usage();
- exit(1);
- }
- if ((argc - arg) > SNMP_MAX_CMDLINE_OIDS) {
- fprintf(stderr, "Too many object identifiers specified. ");
- fprintf(stderr, "Only %d allowed in one request.n", SNMP_MAX_CMDLINE_OIDS);
- usage();
- exit(1);
- }
- /*
- * get the object names
- */
- for (; arg < argc; arg++)
- names[current_name++] = argv[arg];
- SOCK_STARTUP;
- /*
- * Open an SNMP session.
- */
- ss = snmp_open(&session);
- if (ss == NULL) {
- /*
- * diagnose snmp_open errors with the input netsnmp_session pointer
- */
- snmp_sess_perror("snmpget", &session);
- SOCK_CLEANUP;
- exit(1);
- }
- /*
- * Create PDU for GET request and add object names to request.
- */
- pdu = snmp_pdu_create(SNMP_MSG_GET);
- for (count = 0; count < current_name; count++) {
- name_length = MAX_OID_LEN;
- if (!snmp_parse_oid(names[count], name, &name_length)) {
- snmp_perror(names[count]);
- failures++;
- } else
- snmp_add_null_var(pdu, name, name_length);
- }
- if (failures) {
- SOCK_CLEANUP;
- exit(1);
- }
- /*
- * Perform the request.
- *
- * If the Get Request fails, note the OID that caused the error,
- * "fix" the PDU (removing the error-prone OID) and retry.
- */
- retry:
- status = snmp_synch_response(ss, pdu, &response);
- if (status == STAT_SUCCESS) {
- if (response->errstat == SNMP_ERR_NOERROR) {
- for (vars = response->variables; vars;
- vars = vars->next_variable)
- print_variable(vars->name, vars->name_length, vars);
- } else {
- fprintf(stderr, "Error in packetnReason: %sn",
- snmp_errstring(response->errstat));
- if (response->errindex != 0) {
- fprintf(stderr, "Failed object: ");
- for (count = 1, vars = response->variables;
- vars && count != response->errindex;
- vars = vars->next_variable, count++)
- /*EMPTY*/;
- if (vars) {
- fprint_objid(stderr, vars->name, vars->name_length);
- }
- fprintf(stderr, "n");
- }
- exitval = 2;
- /*
- * retry if the errored variable was successfully removed
- */
- if (!netsnmp_ds_get_boolean(NETSNMP_DS_APPLICATION_ID,
- NETSNMP_DS_APP_DONT_FIX_PDUS)) {
- pdu = snmp_fix_pdu(response, SNMP_MSG_GET);
- snmp_free_pdu(response);
- response = NULL;
- if (pdu != NULL) {
- goto retry;
- }
- }
- } /* endif -- SNMP_ERR_NOERROR */
- } else if (status == STAT_TIMEOUT) {
- fprintf(stderr, "Timeout: No Response from %s.n",
- session.peername);
- exitval = 1;
- } else { /* status == STAT_ERROR */
- snmp_sess_perror("snmpget", ss);
- exitval = 1;
- } /* endif -- STAT_SUCCESS */
- if (response)
- snmp_free_pdu(response);
- snmp_close(ss);
- SOCK_CLEANUP;
- return exitval;
- } /* end main() */