| /* |
| * snmpwalk.c - send snmp GETNEXT requests to a network entity, walking a |
| * subtree. |
| * |
| */ |
| /********************************************************************** |
| 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 |
| #if TIME_WITH_SYS_TIME |
| # include <sys/time.h> |
| # 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 |
| #include <stdio.h> |
| #if HAVE_NETDB_H |
| #include <netdb.h> |
| #endif |
| #if HAVE_ARPA_INET_H |
| #include <arpa/inet.h> |
| #endif |
| |
| #include <net-snmp/net-snmp-includes.h> |
| |
| #define NETSNMP_DS_WALK_INCLUDE_REQUESTED 1 |
| #define NETSNMP_DS_WALK_PRINT_STATISTICS 2 |
| #define NETSNMP_DS_WALK_DONT_CHECK_LEXICOGRAPHIC 3 |
| #define NETSNMP_DS_WALK_TIME_RESULTS 4 |
| #define NETSNMP_DS_WALK_DONT_GET_REQUESTED 5 |
| |
| oid objid_mib[] = { 1, 3, 6, 1, 2, 1 }; |
| int numprinted = 0; |
| |
| char *end_name = NULL; |
| |
| void |
| usage(void) |
| { |
| fprintf(stderr, "USAGE: snmpwalk "); |
| snmp_parse_args_usage(stderr); |
| fprintf(stderr, " [OID]\n\n"); |
| snmp_parse_args_descriptions(stderr); |
| fprintf(stderr, |
| " -C APPOPTS\t\tSet various application specific behaviours:\n"); |
| fprintf(stderr, "\t\t\t p: print the number of variables found\n"); |
| fprintf(stderr, "\t\t\t i: include given OID in the search range\n"); |
| fprintf(stderr, "\t\t\t I: don't include the given OID, even if no results are returned\n"); |
| fprintf(stderr, |
| "\t\t\t c: do not check returned OIDs are increasing\n"); |
| fprintf(stderr, |
| "\t\t\t t: Display wall-clock time to complete the request\n"); |
| fprintf(stderr, "\t\t\t E {OID}: End the walk at the specified OID\n"); |
| } |
| |
| void |
| snmp_get_and_print(netsnmp_session * ss, oid * theoid, size_t theoid_len) |
| { |
| netsnmp_pdu *pdu, *response; |
| netsnmp_variable_list *vars; |
| int status; |
| |
| pdu = snmp_pdu_create(SNMP_MSG_GET); |
| snmp_add_null_var(pdu, theoid, theoid_len); |
| |
| status = snmp_synch_response(ss, pdu, &response); |
| if (status == STAT_SUCCESS && response->errstat == SNMP_ERR_NOERROR) { |
| for (vars = response->variables; vars; vars = vars->next_variable) { |
| numprinted++; |
| print_variable(vars->name, vars->name_length, vars); |
| } |
| } |
| if (response) { |
| snmp_free_pdu(response); |
| } |
| } |
| |
| static void |
| optProc(int argc, char *const *argv, int opt) |
| { |
| switch (opt) { |
| case 'C': |
| while (*optarg) { |
| switch (*optarg++) { |
| case 'i': |
| netsnmp_ds_toggle_boolean(NETSNMP_DS_APPLICATION_ID, |
| NETSNMP_DS_WALK_INCLUDE_REQUESTED); |
| break; |
| |
| case 'I': |
| netsnmp_ds_toggle_boolean(NETSNMP_DS_APPLICATION_ID, |
| NETSNMP_DS_WALK_DONT_GET_REQUESTED); |
| break; |
| |
| case 'p': |
| netsnmp_ds_toggle_boolean(NETSNMP_DS_APPLICATION_ID, |
| NETSNMP_DS_WALK_PRINT_STATISTICS); |
| break; |
| |
| case 'c': |
| netsnmp_ds_toggle_boolean(NETSNMP_DS_APPLICATION_ID, |
| NETSNMP_DS_WALK_DONT_CHECK_LEXICOGRAPHIC); |
| break; |
| |
| case 't': |
| netsnmp_ds_toggle_boolean(NETSNMP_DS_APPLICATION_ID, |
| NETSNMP_DS_WALK_TIME_RESULTS); |
| break; |
| |
| case 'E': |
| end_name = argv[optind++]; |
| break; |
| |
| default: |
| fprintf(stderr, "Unknown flag passed to -C: %c\n", |
| optarg[-1]); |
| exit(1); |
| } |
| } |
| break; |
| } |
| } |
| |
| int |
| main(int argc, char *argv[]) |
| { |
| netsnmp_session session, *ss; |
| netsnmp_pdu *pdu, *response; |
| netsnmp_variable_list *vars; |
| int arg; |
| oid name[MAX_OID_LEN]; |
| size_t name_length; |
| oid root[MAX_OID_LEN]; |
| size_t rootlen; |
| oid end_oid[MAX_OID_LEN]; |
| size_t end_len = 0; |
| int count; |
| int running; |
| int status = STAT_ERROR; |
| int check; |
| int exitval = 0; |
| struct timeval tv1, tv2; |
| |
| netsnmp_ds_register_config(ASN_BOOLEAN, "snmpwalk", "includeRequested", |
| NETSNMP_DS_APPLICATION_ID, |
| NETSNMP_DS_WALK_INCLUDE_REQUESTED); |
| |
| netsnmp_ds_register_config(ASN_BOOLEAN, "snmpwalk", "excludeRequested", |
| NETSNMP_DS_APPLICATION_ID, |
| NETSNMP_DS_WALK_DONT_GET_REQUESTED); |
| |
| netsnmp_ds_register_config(ASN_BOOLEAN, "snmpwalk", "printStatistics", |
| NETSNMP_DS_APPLICATION_ID, |
| NETSNMP_DS_WALK_PRINT_STATISTICS); |
| |
| netsnmp_ds_register_config(ASN_BOOLEAN, "snmpwalk", "dontCheckOrdering", |
| NETSNMP_DS_APPLICATION_ID, |
| NETSNMP_DS_WALK_DONT_CHECK_LEXICOGRAPHIC); |
| |
| netsnmp_ds_register_config(ASN_BOOLEAN, "snmpwalk", "timeResults", |
| NETSNMP_DS_APPLICATION_ID, |
| NETSNMP_DS_WALK_TIME_RESULTS); |
| |
| /* |
| * get the common command line arguments |
| */ |
| switch (arg = snmp_parse_args(argc, argv, &session, "C:", optProc)) { |
| case NETSNMP_PARSE_ARGS_ERROR: |
| exit(1); |
| case NETSNMP_PARSE_ARGS_SUCCESS_EXIT: |
| exit(0); |
| case NETSNMP_PARSE_ARGS_ERROR_USAGE: |
| usage(); |
| exit(1); |
| default: |
| break; |
| } |
| |
| /* |
| * get the initial object and subtree |
| */ |
| if (arg < argc) { |
| /* |
| * specified on the command line |
| */ |
| rootlen = MAX_OID_LEN; |
| if (snmp_parse_oid(argv[arg], root, &rootlen) == NULL) { |
| snmp_perror(argv[arg]); |
| exit(1); |
| } |
| } else { |
| /* |
| * use default value |
| */ |
| memmove(root, objid_mib, sizeof(objid_mib)); |
| rootlen = sizeof(objid_mib) / sizeof(oid); |
| } |
| |
| /* |
| * If we've been given an explicit end point, |
| * then convert this to an OID, otherwise |
| * move to the next sibling of the start. |
| */ |
| if ( end_name ) { |
| end_len = MAX_OID_LEN; |
| if (snmp_parse_oid(end_name, end_oid, &end_len) == NULL) { |
| snmp_perror(end_name); |
| exit(1); |
| } |
| } else { |
| memmove(end_oid, root, rootlen*sizeof(oid)); |
| end_len = rootlen; |
| end_oid[end_len-1]++; |
| } |
| |
| 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("snmpwalk", &session); |
| SOCK_CLEANUP; |
| exit(1); |
| } |
| |
| /* |
| * get first object to start walk |
| */ |
| memmove(name, root, rootlen * sizeof(oid)); |
| name_length = rootlen; |
| |
| running = 1; |
| |
| check = |
| !netsnmp_ds_get_boolean(NETSNMP_DS_APPLICATION_ID, |
| NETSNMP_DS_WALK_DONT_CHECK_LEXICOGRAPHIC); |
| if (netsnmp_ds_get_boolean(NETSNMP_DS_APPLICATION_ID, NETSNMP_DS_WALK_INCLUDE_REQUESTED)) { |
| snmp_get_and_print(ss, root, rootlen); |
| } |
| |
| if (netsnmp_ds_get_boolean(NETSNMP_DS_APPLICATION_ID, |
| NETSNMP_DS_WALK_TIME_RESULTS)) |
| gettimeofday(&tv1, NULL); |
| while (running) { |
| /* |
| * create PDU for GETNEXT request and add object name to request |
| */ |
| pdu = snmp_pdu_create(SNMP_MSG_GETNEXT); |
| snmp_add_null_var(pdu, name, name_length); |
| |
| /* |
| * do the request |
| */ |
| status = snmp_synch_response(ss, pdu, &response); |
| if (status == STAT_SUCCESS) { |
| if (response->errstat == SNMP_ERR_NOERROR) { |
| /* |
| * check resulting variables |
| */ |
| for (vars = response->variables; vars; |
| vars = vars->next_variable) { |
| if (snmp_oid_compare(end_oid, end_len, |
| vars->name, vars->name_length) <= 0) { |
| /* |
| * not part of this subtree |
| */ |
| running = 0; |
| continue; |
| } |
| numprinted++; |
| print_variable(vars->name, vars->name_length, vars); |
| if ((vars->type != SNMP_ENDOFMIBVIEW) && |
| (vars->type != SNMP_NOSUCHOBJECT) && |
| (vars->type != SNMP_NOSUCHINSTANCE)) { |
| /* |
| * not an exception value |
| */ |
| if (check |
| && snmp_oid_compare(name, name_length, |
| vars->name, |
| vars->name_length) >= 0) { |
| fprintf(stderr, "Error: OID not increasing: "); |
| fprint_objid(stderr, name, name_length); |
| fprintf(stderr, " >= "); |
| fprint_objid(stderr, vars->name, |
| vars->name_length); |
| fprintf(stderr, "\n"); |
| running = 0; |
| exitval = 1; |
| } |
| memmove((char *) name, (char *) vars->name, |
| vars->name_length * sizeof(oid)); |
| name_length = vars->name_length; |
| } else |
| /* |
| * an exception value, so stop |
| */ |
| running = 0; |
| } |
| } else { |
| /* |
| * error in response, print it |
| */ |
| running = 0; |
| if (response->errstat == SNMP_ERR_NOSUCHNAME) { |
| printf("End of MIB\n"); |
| } else { |
| fprintf(stderr, "Error in packet.\nReason: %s\n", |
| 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; |
| } |
| } |
| } else if (status == STAT_TIMEOUT) { |
| fprintf(stderr, "Timeout: No Response from %s\n", |
| session.peername); |
| running = 0; |
| exitval = 1; |
| } else { /* status == STAT_ERROR */ |
| snmp_sess_perror("snmpwalk", ss); |
| running = 0; |
| exitval = 1; |
| } |
| if (response) |
| snmp_free_pdu(response); |
| } |
| if (netsnmp_ds_get_boolean(NETSNMP_DS_APPLICATION_ID, |
| NETSNMP_DS_WALK_TIME_RESULTS)) |
| gettimeofday(&tv2, NULL); |
| |
| if (numprinted == 0 && status == STAT_SUCCESS) { |
| /* |
| * no printed successful results, which may mean we were |
| * pointed at an only existing instance. Attempt a GET, just |
| * for get measure. |
| */ |
| if (!netsnmp_ds_get_boolean(NETSNMP_DS_APPLICATION_ID, NETSNMP_DS_WALK_DONT_GET_REQUESTED)) { |
| snmp_get_and_print(ss, root, rootlen); |
| } |
| } |
| snmp_close(ss); |
| |
| if (netsnmp_ds_get_boolean(NETSNMP_DS_APPLICATION_ID, |
| NETSNMP_DS_WALK_PRINT_STATISTICS)) { |
| printf("Variables found: %d\n", numprinted); |
| } |
| if (netsnmp_ds_get_boolean(NETSNMP_DS_APPLICATION_ID, |
| NETSNMP_DS_WALK_TIME_RESULTS)) { |
| fprintf (stderr, "Total traversal time = %f seconds\n", |
| (double) (tv2.tv_usec - tv1.tv_usec)/1000000 + |
| (double) (tv2.tv_sec - tv1.tv_sec)); |
| } |
| |
| SOCK_CLEANUP; |
| return exitval; |
| } |
