1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
|
/*
* snmpgetnext.c - send snmp GETNEXT requests to a network entity.
*
*/
/***********************************************************
Copyright 1988, 1989 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 <sys/types.h>
#include <netinet/in.h>
#include <stdio.h>
#ifdef linux
#include <stdlib.h>
#include <string.h>
#endif
#include "mib.h"
#include "snmp.h"
#include "snmp_impl.h"
#include "asn1.h"
#include "snmp_api.h"
#include "snmp_client.h"
extern int errno;
int snmp_dump_packet = 0;
static void
usage ()
{
printf ("usage: snmpgetnext [-p <port>] host community object-identifier [object-identifier ...]\n");
exit (1);
}
int
main(argc, argv)
int argc;
char *argv[];
{
struct snmp_session session, *ss;
struct snmp_pdu *pdu, *response;
struct variable_list *vars;
int arg;
char *gateway = NULL;
char *community = NULL;
int count, current_name = 0;
char *names[128];
oid name[MAX_NAME_LEN];
int name_length;
int status;
int port_flag = 0;
int dest_port = 0;
init_mib();
/*
* usage: snmpgetnext gateway-name community-name object-id-list
*/
for(arg = 1; arg < argc; arg++){
if (argv[arg][0] == '-'){
switch(argv[arg][1]){
case 'd':
snmp_dump_packet++;
break;
case 'p':
port_flag = 1;
if (arg + 1 >= argc)
usage ();
dest_port = atoi(argv[++arg]);
break;
default:
printf("invalid option: -%c\n", argv[arg][1]);
usage ();
break;
}
continue;
}
if (gateway == NULL){
gateway = argv[arg];
} else if (community == NULL){
community = argv[arg];
} else {
names[current_name++] = argv[arg];
}
}
if (!(gateway && community && current_name > 0)){
usage ();
}
bzero((char *)&session, sizeof(struct snmp_session));
session.peername = gateway;
if (port_flag)
session.remote_port = dest_port;
session.community = (u_char *)community;
session.community_len = strlen((char *)community);
session.retries = SNMP_DEFAULT_RETRIES;
session.timeout = SNMP_DEFAULT_TIMEOUT;
session.authenticator = NULL;
snmp_synch_setup(&session);
ss = snmp_open(&session);
if (ss == NULL){
printf("Couldn't open snmp\n");
exit(-1);
}
pdu = snmp_pdu_create(GETNEXT_REQ_MSG);
for(count = 0; count < current_name; count++){
name_length = MAX_NAME_LEN;
if (!read_objid(names[count], name, &name_length)){
printf("Invalid object identifier: %s\n", names[count]);
}
snmp_add_null_var(pdu, name, name_length);
}
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 {
if (response->errstat == SNMP_ERR_NOSUCHNAME){
printf("You have reached the end of the MIB.\n");
} else {
printf("Error in packet.\nReason: %s\n", snmp_errstring(response->errstat));
if (response->errstat == SNMP_ERR_NOSUCHNAME){
printf("This name doesn't exist: ");
for(count = 1, vars = response->variables; vars && count != response->errindex;
vars = vars->next_variable, count++)
;
if (vars)
print_objid(vars->name, vars->name_length);
printf("\n");
}
}
}
} else if (status == STAT_TIMEOUT){
printf("No Response from %s\n", gateway);
} else { /* status == STAT_ERROR */
printf("An error occurred, Quitting\n");
}
if (response)
snmp_free_pdu(response);
snmp_close(ss);
return 0;
}
|
