diff options
Diffstat (limited to 'apps/snmpgetnext.c')
| -rw-r--r-- | apps/snmpgetnext.c | 236 |
1 files changed, 236 insertions, 0 deletions
diff --git a/apps/snmpgetnext.c b/apps/snmpgetnext.c new file mode 100644 index 0000000..7de13f3 --- /dev/null +++ b/apps/snmpgetnext.c @@ -0,0 +1,236 @@ +/* + * snmpgetnext.c - send snmp GETNEXT 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 +# 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 +#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_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: %c\n", + optarg[-1]); + exit(1); + } + } + break; + } +} + +void +usage(void) +{ + fprintf(stderr, "USAGE: snmpgetnext "); + snmp_parse_args_usage(stderr); + fprintf(stderr, " OID [OID]...\n\n"); + snmp_parse_args_descriptions(stderr); + fprintf(stderr, + " -C APPOPTS\t\tSet various application specific behaviours:\n"); + fprintf(stderr, + "\t\t\t f: do not fix errors and retry the request\n"); +} + +int +main(int argc, char *argv[]) +{ + netsnmp_session session, *ss; + netsnmp_pdu *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 failures = 0; + int exitval = 0; + + /* + * 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; + } + + if (arg >= argc) { + fprintf(stderr, "Missing object name\n"); + 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("snmpgetnext", &session); + SOCK_CLEANUP; + exit(1); + } + + /* + * create PDU for GET request and add object names to request + */ + pdu = snmp_pdu_create(SNMP_MSG_GETNEXT); + + for (count = 0; count < current_name; count++) { + name_length = MAX_OID_LEN; + if (snmp_parse_oid(names[count], name, &name_length) == NULL) { + snmp_perror(names[count]); + failures++; + } else + snmp_add_null_var(pdu, name, name_length); + } + if (failures) { + snmp_close(ss); + SOCK_CLEANUP; + exit(1); + } + + /* + * do the request + */ + 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 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++); + 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_GETNEXT); + snmp_free_pdu(response); + response = NULL; + if (pdu != NULL) + goto retry; + } + } + } else if (status == STAT_TIMEOUT) { + fprintf(stderr, "Timeout: No Response from %s.\n", + session.peername); + exitval = 1; + } else { /* status == STAT_ERROR */ + snmp_sess_perror("snmpgetnext", ss); + exitval = 1; + } + + if (response) + snmp_free_pdu(response); + snmp_close(ss); + SOCK_CLEANUP; + return exitval; +} |