apps/snmptest.c - vendor/opensource/netsnmp - Git at Google

 /*
  * snmptest.c - send snmp 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 <config.h>

 #if HAVE_STDLIB_H
 #include <stdlib.h>
 #endif
 #if HAVE_UNISTD_H
 #include <unistd.h>
 #endif
 #if HAVE_STRINGS_H
 #include <strings.h>
 #else
 #include <string.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
 #include <stdio.h>
 #include <ctype.h>
 #include <netdb.h>
 #if HAVE_ARPA_INET_H
 #include <arpa/inet.h>
 #endif
 #include <errno.h>

 #include "asn1.h"
 #include "snmp_impl.h"
 #include "snmp_api.h"
 #include "mib.h"
 #include "snmp.h"
 #include "snmp_client.h"
 #include "party.h"
 #include "context.h"
 #include "view.h"
 #include "acl.h"

 int main __P((int, char **));
 int ascii_to_binary __P((u_char *, u_char *));
 int hex_to_binary __P((u_char *, u_char *));

 extern int  errno;
 int command = GET_REQ_MSG;

 int input_variable __P((struct variable_list *));

 void
 usage __P((void))
 {
     fprintf(stderr, "Usage: snmptest -v 1 [-q] hostname community      or:\n");
     fprintf(stderr, "Usage: snmptest [-v 2] [-q] hostname noAuth       or:\n");
     fprintf(stderr, "Usage: snmptest [-v 2] [-q] hostname srcParty dstParty context\n");
 }

 int
 main(argc, argv)
     int	    argc;
     char    *argv[];
 {
     struct snmp_session session, *ss;
     struct snmp_pdu *pdu = NULL, *response, *copy = NULL;
     struct variable_list *vars, *vp;
     int	arg, ret, version = 2;
     char *hostname = NULL;
     char *community = NULL;
     int port_flag = 0;
     int dest_port = 0;
     oid src[MAX_NAME_LEN], dst[MAX_NAME_LEN], context[MAX_NAME_LEN];
     int srclen = 0, dstlen = 0, contextlen = 0;
     u_long      srcclock = 0, dstclock = 0;
     int clock_flag = 0;
     struct partyEntry *pp;
     struct contextEntry *cxp;
     int	    status, count;
     char	input[128];
     int varcount, nonRepeaters = -1, maxRepetitions;
     int timeout = SNMP_DEFAULT_TIMEOUT, retransmission = SNMP_DEFAULT_RETRIES;
     int trivialSNMPv2 = FALSE;
     struct hostent *hp;
     in_addr_t destAddr;
     char ctmp[300];

     init_mib();
     /* Usage: snmptest -v 1 [-q] hostname community [objectID]      or:
      * Usage: snmptest [-v 2] [-q] hostname noAuth [objectID]       or:
      * Usage: snmptest [-v 2] [-q] hostname srcParty dstParty context [objectID]
      */
     for(arg = 1; arg < argc; arg++){
 	if (argv[arg][0] == '-'){
 	    switch(argv[arg][1]){
 		case 'd':
 		    snmp_set_dump_packet(1);
 		    break;
 		case 'q':
 		    snmp_set_quick_print(1);
 		    break;
                 case 'p':
                     port_flag++;
                     dest_port = atoi(argv[++arg]);
                     break;
                 case 't':
                     timeout = atoi(argv[++arg]) * 1000000L;
                     break;
                 case 'r':
                     retransmission = atoi(argv[++arg]);
                     break;
                 case 'c':
                     clock_flag++;
                     srcclock = atoi(argv[++arg]);
                     dstclock = atoi(argv[++arg]);
                     break;
                 case 'v':
                     version = atoi(argv[++arg]);
 		    if (version < 1 || version > 2){
 			fprintf(stderr, "Invalid version\n");
 			usage();
 			exit(1);
 		    }
                     break;
 		default:
 		    fprintf(stderr, "invalid option: -%c\n", argv[arg][1]);
 		    break;
 	    }
 	    continue;
 	}
 	if (hostname == NULL){
 	    hostname = argv[arg];
 	} else if (version == 1 && community == NULL){
 	    community = argv[arg];
 	} else if (version == 2 && srclen == 0 && !trivialSNMPv2) {
             sprintf(ctmp,"%s/party.conf",SNMPLIBPATH);
 	    if (read_party_database(ctmp) != 0){
 		fprintf(stderr,
 			"Couldn't read party database from %s\n",ctmp);
 		exit(0);
 	    }
             sprintf(ctmp,"%s/context.conf",SNMPLIBPATH);
 	    if (read_context_database(ctmp) != 0){
 		fprintf(stderr,
 			"Couldn't read context database from %s\n",ctmp);
 		exit(0);
 	    }
             sprintf(ctmp,"%s/acl.conf",SNMPLIBPATH);
 	    if (read_acl_database(ctmp) != 0){
 		fprintf(stderr,
 			"Couldn't read access control database from %s\n",ctmp);
 		exit(0);
 	    }
             if (!strcasecmp(argv[arg], "noauth")){
                 trivialSNMPv2 = TRUE;
             } else {
 		party_scanInit();
 		for(pp = party_scanNext(); pp; pp = party_scanNext()){
 		    if (!strcasecmp(pp->partyName, argv[arg])){
 			srclen = pp->partyIdentityLen;
 			memmove(src, pp->partyIdentity, srclen * sizeof(oid));
 			break;
 		    }
 		}
 		if (!pp){
 		    srclen = MAX_NAME_LEN;
 		    if (!read_objid(argv[arg], src, &srclen)){
 			printf("Invalid source party: %s\n", argv[arg]);
 			srclen = 0;
 			usage();
 			exit(1);
 		    }
 		}
 	    }
 	} else if (version == 2 && dstlen == 0 && !trivialSNMPv2){
             dstlen = MAX_NAME_LEN;
             party_scanInit();
             for(pp = party_scanNext(); pp; pp = party_scanNext()){
                 if (!strcasecmp(pp->partyName, argv[arg])){
                     dstlen = pp->partyIdentityLen;
                     memmove(dst, pp->partyIdentity, dstlen * sizeof(oid));
                     break;
                 }
             }
             if (!pp){
                 if (!read_objid(argv[arg], dst, &dstlen)){
                     printf("Invalid destination party: %s\n", argv[arg]);
                     dstlen = 0;
 		    usage();
                     exit(1);
 		}
             }
 	} else if (version == 2 && contextlen == 0 && !trivialSNMPv2){
 	    contextlen = MAX_NAME_LEN;
 	    context_scanInit();
 	    for(cxp = context_scanNext(); cxp; cxp = context_scanNext()){
 		if (!strcasecmp(cxp->contextName, argv[arg])){
 		    contextlen = cxp->contextIdentityLen;
 		    memmove(context, cxp->contextIdentity,
 			  contextlen * sizeof(oid));
 		    break;
 		}
 	    }
 	    if (!cxp){
 		if (!read_objid(argv[arg], context, &contextlen)){
 		    printf("Invalid context: %s\n", argv[arg]);
 		    contextlen = 0;
 		    usage();
 		    exit(1);
 		}
 	    }
 	} else {
 	    usage();
 	    exit(1);
 	}
     }
     if (version == 1 && community == NULL)
 	community = "public";	/* default to public */

     if (!hostname || (version < 1) || (version > 2)
       || (version == 1 && !community)
       || (version == 2 && (!srclen || !dstlen || !contextlen)
           && !trivialSNMPv2)){
               usage();
               exit(1);
     }

     if (trivialSNMPv2){
       if ((destAddr = inet_addr(hostname)) == -1){
           hp = gethostbyname(hostname);
           if (hp == NULL){
               fprintf(stderr, "unknown host: %s\n", hostname);
               exit(1);
           } else {
               memmove(&destAddr, hp->h_addr, hp->h_length);
           }
       }
       srclen = dstlen = contextlen = MAX_NAME_LEN;
       ms_party_init(destAddr, src, &srclen, dst, &dstlen,
                     context, &contextlen);
     }

     if (clock_flag){
         pp = party_getEntry(src, srclen);
         if (pp){
             pp->partyAuthClock = srcclock;
             gettimeofday(&pp->tv, (struct timezone *)0);
             pp->tv.tv_sec -= pp->partyAuthClock;
         }
         pp = party_getEntry(dst, dstlen);
         if (pp){
             pp->partyAuthClock = dstclock;
             gettimeofday(&pp->tv, (struct timezone *)0);
             pp->tv.tv_sec -= pp->partyAuthClock;
         }
     }

     memset(&session, 0, sizeof(struct snmp_session));
     session.peername = hostname;
     if (port_flag)
         session.remote_port = dest_port;
     if (version == 1){
 	session.version = SNMP_VERSION_1;
         session.community = (u_char *)community;
         session.community_len = strlen((char *)community);
     } else if (version == 2){
 	session.version = SNMP_VERSION_2;
         session.srcParty = src;
         session.srcPartyLen = srclen;
         session.dstParty = dst;
         session.dstPartyLen = dstlen;
         session.context = context;
         session.contextLen = contextlen;
     }
     session.retries = retransmission;
     session.timeout = timeout;
     session.authenticator = NULL;
     snmp_synch_setup(&session);
     ss = snmp_open(&session);
     if (ss == NULL){
 	fprintf(stderr, "Couldn't open snmp\n");
 	exit(-1);
     }

     varcount = 0;
     while(1){
 	vars = NULL;
 	for(ret = 1; ret != 0;){
 	    vp = (struct variable_list *)malloc(sizeof(struct variable_list));
 	    vp->next_variable = NULL;
 	    vp->name = NULL;
 	    vp->val.string = NULL;

 	    while((ret = input_variable(vp)) == -1)
 		;
 	    if (ret == 1){
 		varcount++;
 		/* add it to the list */
 		if (vars == NULL){
 		    /* if first variable */
 		    pdu = snmp_pdu_create(command);
 		    pdu->variables = vp;
 		} else {
 		    vars->next_variable = vp;
 		}
 		vars = vp;
 	    } else {
 		/* free the last (unused) variable */
 		if (vp->name)
 		    free((char *)vp->name);
 		if (vp->val.string)
 		    free((char *)vp->val.string);
 		free((char *)vp);

 		if (command == BULK_REQ_MSG){
 		    if (nonRepeaters == -1){
 			nonRepeaters = varcount;
 			ret = -1;	/* so we collect more variables */
 			printf("Now input the repeating variables\n");
 		    } else {
 			printf("What repeat count? ");
 			fflush(stdout);
 			gets(input);
 			maxRepetitions = atoi(input);
 			pdu->non_repeaters = nonRepeaters;
 			pdu->max_repetitions = maxRepetitions;
 		    }
 		}
 	    }
 	    if (varcount == 0 && ret == 0){
 		if (!copy){
 		    printf("No PDU to send.\n");
 		    ret = -1;
 		} else {
 		    pdu = snmp_clone_pdu(copy);
 		    printf("Resending last PDU.\n");
 		}
 	    }
 	}
 	copy = snmp_clone_pdu(pdu);
 	if (command == TRP2_REQ_MSG){
 	    /* No response needed */
 	    if (!snmp_send(ss, pdu)){
 		printf("Couldn't send SNMPv2 trap.\n");
 	    }
 	} else {
 	    status = snmp_synch_response(ss, pdu, &response);
 	    if (status == STAT_SUCCESS){
 		if (command == INFORM_REQ_MSG &&
 		    response->errstat == SNMP_ERR_NOERROR){
 		    printf("Inform Acknowledged\n");
 		} else {
 		    switch(response->command){
 		      case GET_REQ_MSG:
 			printf("Received Get Request ");
 			break;
 		      case GETNEXT_REQ_MSG:
 			printf("Received Getnext Request ");
 			break;
 		      case GET_RSP_MSG:
 			printf("Received Get Response ");
 			break;
 		      case SET_REQ_MSG:
 			printf("Received Set Request ");
 			break;
 		      case TRP_REQ_MSG:
 			printf("Received Trap Request ");
 			break;
 		      case BULK_REQ_MSG:
 			printf("Received Bulk Request ");
 			break;
 		      case INFORM_REQ_MSG:
 			printf("Received Inform Request ");
 			break;
 		      case TRP2_REQ_MSG:
 			printf("Received SNMPv2 Trap Request ");
 			break;
 		    }
 		    printf("from %s\n", inet_ntoa(response->address.sin_addr));
 		    printf("requestid 0x%lX errstat 0x%lX errindex 0x%lX\n",
 			   response->reqid, response->errstat,
 			   response->errindex);
 		    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->errstat == SNMP_ERR_NOSUCHNAME){
 			    for(count = 1, vars = response->variables;
 				vars && count != response->errindex;
 				vars = vars->next_variable, count++)
 				;
 			    if (vars){
 				printf("This name doesn't exist: ");
 				print_objid(vars->name, vars->name_length);
 			    }
 			    printf("\n");
 			}
 		    }
 		}
 	    } else if (status == STAT_TIMEOUT){
 		fprintf(stderr, "No Response from %s\n", hostname);
 	    } else {    /* status == STAT_ERROR */
 		fprintf(stderr, "An error occurred, Quitting\n");
 	    }

 	    if (response)
 		snmp_free_pdu(response);
 	}
 	varcount = 0;
 	nonRepeaters = -1;
     }
 }

 int
 ascii_to_binary(cp, bufp)
     u_char  *cp;
     u_char *bufp;
 {
     int	subidentifier;
     u_char *bp = bufp;

     for(; *cp != '\0'; cp++){
 	if (isspace(*cp))
 	    continue;
 	if (!isdigit(*cp)){
 	    fprintf(stderr, "Input error\n");
 	    return -1;
 	}
 	subidentifier = atoi(cp);
 	if (subidentifier > 255){
 	    fprintf(stderr, "subidentifier %d is too large ( > 255)\n",
 		    subidentifier);
 	    return -1;
 	}
 	*bp++ = (u_char)subidentifier;
 	while(isdigit(*cp))
 	    cp++;
 	cp--;
     }
     return bp - bufp;
 }


 int
 hex_to_binary(cp, bufp)
     u_char  *cp;
     u_char *bufp;
 {
     int	subidentifier;
     u_char *bp = bufp;

     for(; *cp != '\0'; cp++){
 	if (isspace(*cp))
 	    continue;
 	if (!isxdigit(*cp)){
 	    fprintf(stderr, "Input error\n");
 	    return -1;
 	}
 	sscanf((char *)cp, "%x", &subidentifier);
 	if (subidentifier > 255){
 	    fprintf(stderr, "subidentifier %d is too large ( > 255)\n",
 		    subidentifier);
 	    return -1;
 	}
 	*bp++ = (u_char)subidentifier;
 	while(isxdigit(*cp))
 	    cp++;
 	cp--;
     }
     return bp - bufp;
 }


 int
 input_variable(vp)
     struct variable_list    *vp;
 {
     char  buf[256];
     u_char value[256], ch;
     oid name[MAX_NAME_LEN];

     printf("Variable: ");
     fflush(stdout);
     gets(buf);

     if (*buf == 0){
 	vp->name_length = 0;
 	return 0;
     }
     if (*buf == '$'){
 	switch(buf[1]){
 	    case 'G':
 		command = GET_REQ_MSG;
 		printf("Request type is Get Request\n");
 		break;
 	    case 'N':
 		command = GETNEXT_REQ_MSG;
 		printf("Request type is Getnext Request\n");
 		break;
 	    case 'S':
 		command = SET_REQ_MSG;
 		printf("Request type is Set Request\n");
 		break;
 	    case 'B':
 		command = BULK_REQ_MSG;
 		printf("Request type is Bulk Request\n");
 		printf("Enter a blank line to terminate the list of non-repeaters\n");
 		printf("and to begin the repeating variables\n");
 		break;
 	    case 'I':
 		command = INFORM_REQ_MSG;
 		printf("Request type is Inform Request\n");
 		printf("(Are you sending to the right port?)\n");
 		break;
 	    case 'T':
 		command = TRP2_REQ_MSG;
 		printf("Request type is SNMPv2 Trap Request\n");
 		printf("(Are you sending to the right port?)\n");
 		break;
 	    case 'D':
 		if (snmp_get_dump_packet()){
 		    snmp_set_dump_packet(0);
 		    printf("Turned packet dump off\n");
 		} else {
 		    snmp_set_dump_packet(1);
 		    printf("Turned packet dump on\n");
 		}
 		break;
 	    case 'Q':
 		switch(buf[2]){
 		    case NULL:
 		        printf("Quitting,  Goodbye\n");
 			exit(0);
 			break;
 		    case 'P':
 			if (snmp_get_quick_print()){
 			   snmp_set_quick_print(0);
 			   printf("Turned quick printing off\n");
 			} else {
 			   snmp_set_quick_print(1);
 			   printf("Turned quick printing on\n");
 			}
 			break;
 		}
 		break;
 	    default:
 		fprintf(stderr, "Bad command\n");
 	}
 	return -1;
     }
     vp->name_length = MAX_NAME_LEN;
     if (!read_objid(buf, name, &vp->name_length))
 	return -1;
     vp->name = (oid *)malloc(vp->name_length * sizeof(oid));
     memmove(vp->name, name, vp->name_length * sizeof(oid));

     if (command == SET_REQ_MSG || command == INFORM_REQ_MSG
 	|| command == TRP2_REQ_MSG){
 	printf("Type [i|s|x|d|n|o|t|a]: ");
 	fflush(stdout);
 	gets(buf);
 	ch = *buf;
 	switch(ch){
 	    case 'i':
 		vp->type = INTEGER;
 		break;
 	    case 's':
 		vp->type = STRING;
 		break;
 	    case 'x':
 		vp->type = STRING;
 		break;
 	    case 'd':
 		vp->type = STRING;
 		break;
 	    case 'n':
 		vp->type = NULLOBJ;
 		break;
 	    case 'o':
 		vp->type = OBJID;
 		break;
 	    case 't':
 		vp->type = TIMETICKS;
 		break;
 	    case 'a':
 		vp->type = IPADDRESS;
 		break;
 	    default:
 		fprintf(stderr, "bad type \"%c\", use \"i\", \"s\", \"x\", \"d\", \"n\", \"o\", \"t\", or \"a\".\n", *buf);
 		return -1;
 	}
 	printf("Value: "); fflush(stdout);
 	gets(buf);
 	switch(vp->type){
 	    case INTEGER:
 		vp->val.integer = (long *)malloc(sizeof(long));
 		*(vp->val.integer) = atoi(buf);
 		vp->val_len = sizeof(long);
 		break;
 	    case STRING:
 		if (ch == 'd'){
 		    vp->val_len = ascii_to_binary((u_char *)buf, value);
 		} else if (ch == 's'){
 		    strcpy(value, buf);
 		    vp->val_len = strlen(buf);
 		} else if (ch == 'x'){
 		    vp->val_len = hex_to_binary((u_char *)buf, value);
 		}
 		vp->val.string = (u_char *)malloc(vp->val_len);
               memmove(vp->val.string, value, vp->val_len);
 		break;
 	    case NULLOBJ:
 		vp->val_len = 0;
 		vp->val.string = NULL;
 		break;
 	    case OBJID:
 		vp->val_len = MAX_NAME_LEN;;
 		read_objid(buf, (oid *)value, &vp->val_len);
 		vp->val_len *= sizeof(oid);
 		vp->val.objid = (oid *)malloc(vp->val_len);
               memmove(vp->val.objid, value, vp->val_len);
 		break;
 	    case TIMETICKS:
 		vp->val.integer = (long *)malloc(sizeof(long));
 		*(vp->val.integer) = atoi(buf);
 		vp->val_len = sizeof(long);
 		break;
 	    case IPADDRESS:
 		vp->val.integer = (long *)malloc(sizeof(long));
 		*(vp->val.integer) = inet_addr(buf);
 		vp->val_len = sizeof(long);
 		break;
 	    default:
 		fprintf(stderr, "Internal error\n");
 		break;
 	}
     } else {	/* some form of get message */
 	vp->type = NULLOBJ;
 	vp->val_len = 0;
     }
     return 1;
 }
	/*
	* snmptest.c - send snmp 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 <config.h>

	#if HAVE_STDLIB_H
	#include <stdlib.h>
	#endif
	#if HAVE_UNISTD_H
	#include <unistd.h>
	#endif
	#if HAVE_STRINGS_H
	#include <strings.h>
	#else
	#include <string.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
	#include <stdio.h>
	#include <ctype.h>
	#include <netdb.h>
	#if HAVE_ARPA_INET_H
	#include <arpa/inet.h>
	#endif
	#include <errno.h>

	#include "asn1.h"
	#include "snmp_impl.h"
	#include "snmp_api.h"
	#include "mib.h"
	#include "snmp.h"
	#include "snmp_client.h"
	#include "party.h"
	#include "context.h"
	#include "view.h"
	#include "acl.h"

	int main __P((int, char **));
	int ascii_to_binary __P((u_char , u_char ));
	int hex_to_binary __P((u_char , u_char ));

	extern int errno;
	int command = GET_REQ_MSG;

	int input_variable __P((struct variable_list *));

	void
	usage __P((void))
	{
	fprintf(stderr, "Usage: snmptest -v 1 [-q] hostname community or:\n");
	fprintf(stderr, "Usage: snmptest [-v 2] [-q] hostname noAuth or:\n");
	fprintf(stderr, "Usage: snmptest [-v 2] [-q] hostname srcParty dstParty context\n");
	}

	int
	main(argc, argv)
	int argc;
	char *argv[];
	{
	struct snmp_session session, *ss;
	struct snmp_pdu pdu = NULL, response, *copy = NULL;
	struct variable_list vars, vp;
	int arg, ret, version = 2;
	char *hostname = NULL;
	char *community = NULL;
	int port_flag = 0;
	int dest_port = 0;
	oid src[MAX_NAME_LEN], dst[MAX_NAME_LEN], context[MAX_NAME_LEN];
	int srclen = 0, dstlen = 0, contextlen = 0;
	u_long srcclock = 0, dstclock = 0;
	int clock_flag = 0;
	struct partyEntry *pp;
	struct contextEntry *cxp;
	int status, count;
	char input[128];
	int varcount, nonRepeaters = -1, maxRepetitions;
	int timeout = SNMP_DEFAULT_TIMEOUT, retransmission = SNMP_DEFAULT_RETRIES;
	int trivialSNMPv2 = FALSE;
	struct hostent *hp;
	in_addr_t destAddr;
	char ctmp[300];

	init_mib();
	/* Usage: snmptest -v 1 [-q] hostname community [objectID] or:
	* Usage: snmptest [-v 2] [-q] hostname noAuth [objectID] or:
	* Usage: snmptest [-v 2] [-q] hostname srcParty dstParty context [objectID]
	*/
	for(arg = 1; arg < argc; arg++){
	if (argv[arg][0] == '-'){
	switch(argv[arg][1]){
	case 'd':
	snmp_set_dump_packet(1);
	break;
	case 'q':
	snmp_set_quick_print(1);
	break;
	case 'p':
	port_flag++;
	dest_port = atoi(argv[++arg]);
	break;
	case 't':
	timeout = atoi(argv[++arg]) * 1000000L;
	break;
	case 'r':
	retransmission = atoi(argv[++arg]);
	break;
	case 'c':
	clock_flag++;
	srcclock = atoi(argv[++arg]);
	dstclock = atoi(argv[++arg]);
	break;
	case 'v':
	version = atoi(argv[++arg]);
	if (version < 1 \|\| version > 2){
	fprintf(stderr, "Invalid version\n");
	usage();
	exit(1);
	}
	break;
	default:
	fprintf(stderr, "invalid option: -%c\n", argv[arg][1]);
	break;
	}
	continue;
	}
	if (hostname == NULL){
	hostname = argv[arg];
	} else if (version == 1 && community == NULL){
	community = argv[arg];
	} else if (version == 2 && srclen == 0 && !trivialSNMPv2) {
	sprintf(ctmp,"%s/party.conf",SNMPLIBPATH);
	if (read_party_database(ctmp) != 0){
	fprintf(stderr,
	"Couldn't read party database from %s\n",ctmp);
	exit(0);
	}
	sprintf(ctmp,"%s/context.conf",SNMPLIBPATH);
	if (read_context_database(ctmp) != 0){
	fprintf(stderr,
	"Couldn't read context database from %s\n",ctmp);
	exit(0);
	}
	sprintf(ctmp,"%s/acl.conf",SNMPLIBPATH);
	if (read_acl_database(ctmp) != 0){
	fprintf(stderr,
	"Couldn't read access control database from %s\n",ctmp);
	exit(0);
	}
	if (!strcasecmp(argv[arg], "noauth")){
	trivialSNMPv2 = TRUE;
	} else {
	party_scanInit();
	for(pp = party_scanNext(); pp; pp = party_scanNext()){
	if (!strcasecmp(pp->partyName, argv[arg])){
	srclen = pp->partyIdentityLen;
	memmove(src, pp->partyIdentity, srclen * sizeof(oid));
	break;
	}
	}
	if (!pp){
	srclen = MAX_NAME_LEN;
	if (!read_objid(argv[arg], src, &srclen)){
	printf("Invalid source party: %s\n", argv[arg]);
	srclen = 0;
	usage();
	exit(1);
	}
	}
	}
	} else if (version == 2 && dstlen == 0 && !trivialSNMPv2){
	dstlen = MAX_NAME_LEN;
	party_scanInit();
	for(pp = party_scanNext(); pp; pp = party_scanNext()){
	if (!strcasecmp(pp->partyName, argv[arg])){
	dstlen = pp->partyIdentityLen;
	memmove(dst, pp->partyIdentity, dstlen * sizeof(oid));
	break;
	}
	}
	if (!pp){
	if (!read_objid(argv[arg], dst, &dstlen)){
	printf("Invalid destination party: %s\n", argv[arg]);
	dstlen = 0;
	usage();
	exit(1);
	}
	}
	} else if (version == 2 && contextlen == 0 && !trivialSNMPv2){
	contextlen = MAX_NAME_LEN;
	context_scanInit();
	for(cxp = context_scanNext(); cxp; cxp = context_scanNext()){
	if (!strcasecmp(cxp->contextName, argv[arg])){
	contextlen = cxp->contextIdentityLen;
	memmove(context, cxp->contextIdentity,
	contextlen * sizeof(oid));
	break;
	}
	}
	if (!cxp){
	if (!read_objid(argv[arg], context, &contextlen)){
	printf("Invalid context: %s\n", argv[arg]);
	contextlen = 0;
	usage();
	exit(1);
	}
	}
	} else {
	usage();
	exit(1);
	}
	}
	if (version == 1 && community == NULL)
	community = "public"; /* default to public */

	if (!hostname \|\| (version < 1) \|\| (version > 2)
	\|\| (version == 1 && !community)
	\|\| (version == 2 && (!srclen \|\| !dstlen \|\| !contextlen)
	&& !trivialSNMPv2)){
	usage();
	exit(1);
	}

	if (trivialSNMPv2){
	if ((destAddr = inet_addr(hostname)) == -1){
	hp = gethostbyname(hostname);
	if (hp == NULL){
	fprintf(stderr, "unknown host: %s\n", hostname);
	exit(1);
	} else {
	memmove(&destAddr, hp->h_addr, hp->h_length);
	}
	}
	srclen = dstlen = contextlen = MAX_NAME_LEN;
	ms_party_init(destAddr, src, &srclen, dst, &dstlen,
	context, &contextlen);
	}

	if (clock_flag){
	pp = party_getEntry(src, srclen);
	if (pp){
	pp->partyAuthClock = srcclock;
	gettimeofday(&pp->tv, (struct timezone *)0);
	pp->tv.tv_sec -= pp->partyAuthClock;
	}
	pp = party_getEntry(dst, dstlen);
	if (pp){
	pp->partyAuthClock = dstclock;
	gettimeofday(&pp->tv, (struct timezone *)0);
	pp->tv.tv_sec -= pp->partyAuthClock;
	}
	}

	memset(&session, 0, sizeof(struct snmp_session));
	session.peername = hostname;
	if (port_flag)
	session.remote_port = dest_port;
	if (version == 1){
	session.version = SNMP_VERSION_1;
	session.community = (u_char *)community;
	session.community_len = strlen((char *)community);
	} else if (version == 2){
	session.version = SNMP_VERSION_2;
	session.srcParty = src;
	session.srcPartyLen = srclen;
	session.dstParty = dst;
	session.dstPartyLen = dstlen;
	session.context = context;
	session.contextLen = contextlen;
	}
	session.retries = retransmission;
	session.timeout = timeout;
	session.authenticator = NULL;
	snmp_synch_setup(&session);
	ss = snmp_open(&session);
	if (ss == NULL){
	fprintf(stderr, "Couldn't open snmp\n");
	exit(-1);
	}

	varcount = 0;
	while(1){
	vars = NULL;
	for(ret = 1; ret != 0;){
	vp = (struct variable_list *)malloc(sizeof(struct variable_list));
	vp->next_variable = NULL;
	vp->name = NULL;
	vp->val.string = NULL;

	while((ret = input_variable(vp)) == -1)
	;
	if (ret == 1){
	varcount++;
	/* add it to the list */
	if (vars == NULL){
	/* if first variable */
	pdu = snmp_pdu_create(command);
	pdu->variables = vp;
	} else {
	vars->next_variable = vp;
	}
	vars = vp;
	} else {
	/* free the last (unused) variable */
	if (vp->name)
	free((char *)vp->name);
	if (vp->val.string)
	free((char *)vp->val.string);
	free((char *)vp);

	if (command == BULK_REQ_MSG){
	if (nonRepeaters == -1){
	nonRepeaters = varcount;
	ret = -1; /* so we collect more variables */
	printf("Now input the repeating variables\n");
	} else {
	printf("What repeat count? ");
	fflush(stdout);
	gets(input);
	maxRepetitions = atoi(input);
	pdu->non_repeaters = nonRepeaters;
	pdu->max_repetitions = maxRepetitions;
	}
	}
	}
	if (varcount == 0 && ret == 0){
	if (!copy){
	printf("No PDU to send.\n");
	ret = -1;
	} else {
	pdu = snmp_clone_pdu(copy);
	printf("Resending last PDU.\n");
	}
	}
	}
	copy = snmp_clone_pdu(pdu);
	if (command == TRP2_REQ_MSG){
	/* No response needed */
	if (!snmp_send(ss, pdu)){
	printf("Couldn't send SNMPv2 trap.\n");
	}
	} else {
	status = snmp_synch_response(ss, pdu, &response);
	if (status == STAT_SUCCESS){
	if (command == INFORM_REQ_MSG &&
	response->errstat == SNMP_ERR_NOERROR){
	printf("Inform Acknowledged\n");
	} else {
	switch(response->command){
	case GET_REQ_MSG:
	printf("Received Get Request ");
	break;
	case GETNEXT_REQ_MSG:
	printf("Received Getnext Request ");
	break;
	case GET_RSP_MSG:
	printf("Received Get Response ");
	break;
	case SET_REQ_MSG:
	printf("Received Set Request ");
	break;
	case TRP_REQ_MSG:
	printf("Received Trap Request ");
	break;
	case BULK_REQ_MSG:
	printf("Received Bulk Request ");
	break;
	case INFORM_REQ_MSG:
	printf("Received Inform Request ");
	break;
	case TRP2_REQ_MSG:
	printf("Received SNMPv2 Trap Request ");
	break;
	}
	printf("from %s\n", inet_ntoa(response->address.sin_addr));
	printf("requestid 0x%lX errstat 0x%lX errindex 0x%lX\n",
	response->reqid, response->errstat,
	response->errindex);
	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->errstat == SNMP_ERR_NOSUCHNAME){
	for(count = 1, vars = response->variables;
	vars && count != response->errindex;
	vars = vars->next_variable, count++)
	;
	if (vars){
	printf("This name doesn't exist: ");
	print_objid(vars->name, vars->name_length);
	}
	printf("\n");
	}
	}
	}
	} else if (status == STAT_TIMEOUT){
	fprintf(stderr, "No Response from %s\n", hostname);
	} else { /* status == STAT_ERROR */
	fprintf(stderr, "An error occurred, Quitting\n");
	}

	if (response)
	snmp_free_pdu(response);
	}
	varcount = 0;
	nonRepeaters = -1;
	}
	}

	int
	ascii_to_binary(cp, bufp)
	u_char *cp;
	u_char *bufp;
	{
	int subidentifier;
	u_char *bp = bufp;

	for(; *cp != '\0'; cp++){
	if (isspace(*cp))
	continue;
	if (!isdigit(*cp)){
	fprintf(stderr, "Input error\n");
	return -1;
	}
	subidentifier = atoi(cp);
	if (subidentifier > 255){
	fprintf(stderr, "subidentifier %d is too large ( > 255)\n",
	subidentifier);
	return -1;
	}
	*bp++ = (u_char)subidentifier;
	while(isdigit(*cp))
	cp++;
	cp--;
	}
	return bp - bufp;
	}


	int
	hex_to_binary(cp, bufp)
	u_char *cp;
	u_char *bufp;
	{
	int subidentifier;
	u_char *bp = bufp;

	for(; *cp != '\0'; cp++){
	if (isspace(*cp))
	continue;
	if (!isxdigit(*cp)){
	fprintf(stderr, "Input error\n");
	return -1;
	}
	sscanf((char *)cp, "%x", &subidentifier);
	if (subidentifier > 255){
	fprintf(stderr, "subidentifier %d is too large ( > 255)\n",
	subidentifier);
	return -1;
	}
	*bp++ = (u_char)subidentifier;
	while(isxdigit(*cp))
	cp++;
	cp--;
	}
	return bp - bufp;
	}


	int
	input_variable(vp)
	struct variable_list *vp;
	{
	char buf[256];
	u_char value[256], ch;
	oid name[MAX_NAME_LEN];

	printf("Variable: ");
	fflush(stdout);
	gets(buf);

	if (*buf == 0){
	vp->name_length = 0;
	return 0;
	}
	if (*buf == '$'){
	switch(buf[1]){
	case 'G':
	command = GET_REQ_MSG;
	printf("Request type is Get Request\n");
	break;
	case 'N':
	command = GETNEXT_REQ_MSG;
	printf("Request type is Getnext Request\n");
	break;
	case 'S':
	command = SET_REQ_MSG;
	printf("Request type is Set Request\n");
	break;
	case 'B':
	command = BULK_REQ_MSG;
	printf("Request type is Bulk Request\n");
	printf("Enter a blank line to terminate the list of non-repeaters\n");
	printf("and to begin the repeating variables\n");
	break;
	case 'I':
	command = INFORM_REQ_MSG;
	printf("Request type is Inform Request\n");
	printf("(Are you sending to the right port?)\n");
	break;
	case 'T':
	command = TRP2_REQ_MSG;
	printf("Request type is SNMPv2 Trap Request\n");
	printf("(Are you sending to the right port?)\n");
	break;
	case 'D':
	if (snmp_get_dump_packet()){
	snmp_set_dump_packet(0);
	printf("Turned packet dump off\n");
	} else {
	snmp_set_dump_packet(1);
	printf("Turned packet dump on\n");
	}
	break;
	case 'Q':
	switch(buf[2]){
	case NULL:
	printf("Quitting, Goodbye\n");
	exit(0);
	break;
	case 'P':
	if (snmp_get_quick_print()){
	snmp_set_quick_print(0);
	printf("Turned quick printing off\n");
	} else {
	snmp_set_quick_print(1);
	printf("Turned quick printing on\n");
	}
	break;
	}
	break;
	default:
	fprintf(stderr, "Bad command\n");
	}
	return -1;
	}
	vp->name_length = MAX_NAME_LEN;
	if (!read_objid(buf, name, &vp->name_length))
	return -1;
	vp->name = (oid )malloc(vp->name_length sizeof(oid));
	memmove(vp->name, name, vp->name_length * sizeof(oid));

	if (command == SET_REQ_MSG \|\| command == INFORM_REQ_MSG
	\|\| command == TRP2_REQ_MSG){
	printf("Type [i\|s\|x\|d\|n\|o\|t\|a]: ");
	fflush(stdout);
	gets(buf);
	ch = *buf;
	switch(ch){
	case 'i':
	vp->type = INTEGER;
	break;
	case 's':
	vp->type = STRING;
	break;
	case 'x':
	vp->type = STRING;
	break;
	case 'd':
	vp->type = STRING;
	break;
	case 'n':
	vp->type = NULLOBJ;
	break;
	case 'o':
	vp->type = OBJID;
	break;
	case 't':
	vp->type = TIMETICKS;
	break;
	case 'a':
	vp->type = IPADDRESS;
	break;
	default:
	fprintf(stderr, "bad type \"%c\", use \"i\", \"s\", \"x\", \"d\", \"n\", \"o\", \"t\", or \"a\".\n", *buf);
	return -1;
	}
	printf("Value: "); fflush(stdout);
	gets(buf);
	switch(vp->type){
	case INTEGER:
	vp->val.integer = (long *)malloc(sizeof(long));
	*(vp->val.integer) = atoi(buf);
	vp->val_len = sizeof(long);
	break;
	case STRING:
	if (ch == 'd'){
	vp->val_len = ascii_to_binary((u_char *)buf, value);
	} else if (ch == 's'){
	strcpy(value, buf);
	vp->val_len = strlen(buf);
	} else if (ch == 'x'){
	vp->val_len = hex_to_binary((u_char *)buf, value);
	}
	vp->val.string = (u_char *)malloc(vp->val_len);
	memmove(vp->val.string, value, vp->val_len);
	break;
	case NULLOBJ:
	vp->val_len = 0;
	vp->val.string = NULL;
	break;
	case OBJID:
	vp->val_len = MAX_NAME_LEN;;
	read_objid(buf, (oid *)value, &vp->val_len);
	vp->val_len *= sizeof(oid);
	vp->val.objid = (oid *)malloc(vp->val_len);
	memmove(vp->val.objid, value, vp->val_len);
	break;
	case TIMETICKS:
	vp->val.integer = (long *)malloc(sizeof(long));
	*(vp->val.integer) = atoi(buf);
	vp->val_len = sizeof(long);
	break;
	case IPADDRESS:
	vp->val.integer = (long *)malloc(sizeof(long));
	*(vp->val.integer) = inet_addr(buf);
	vp->val_len = sizeof(long);
	break;
	default:
	fprintf(stderr, "Internal error\n");
	break;
	}
	} else { /* some form of get message */
	vp->type = NULLOBJ;
	vp->val_len = 0;
	}
	return 1;
	}