Net-SNMP-Examples/snmp_tree.cpp at master · Ryuhei7/Net-SNMP-Examples · GitHub

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
#include "net-snmp/net-snmp-config.h"
#include "net-snmp/net-snmp-includes.h"
#include <string.h>
#include <iostream>
using namespace std;

int find_last_oid(netsnmp_session * ss,oid *base,int base_length){
	netsnmp_pdu *response;
	netsnmp_pdu *pdu;
	int running = 1;
	int status;
	int length=0;
	pdu = snmp_pdu_create(SNMP_MSG_GETNEXT);
	snmp_add_null_var(pdu, base, base_length);
	while(running){
		status = snmp_synch_response(ss, pdu, &response);
		if (status != STAT_SUCCESS || !response){
			snmp_sess_perror("snmp_synch_response", ss);
			exit(1);
		}
		if(response->errstat != SNMP_ERR_NOERROR){
			fprintf(stderr, "snmp: Error in packet: %s\n",snmp_errstring(response->errstat));
			exit(1);
		}
		if(response && snmp_oid_compare(response->variables->name,SNMP_MIN(base_length,response->variables->name_length),base, base_length) != 0){
			running = 0;
			cout << "さっきのが最後だったみたい" << endl;
			cout << response->variables->name_length << endl;
			cout << SNMP_MIN(base_length,response->variables->name_length)  << endl;
			cout << base_length << endl;
		}
		else{
			cout << "もう一周いくよ" << endl;

			memcpy(base,response->variables->name,response->variables->name_length*sizeof(oid));
			length=response->variables->name_length;
			pdu = snmp_pdu_create(SNMP_MSG_GETNEXT);
			snmp_add_null_var(pdu, response->variables->name,
					response->variables->name_length);
		}
		snmp_free_pdu(response);
	}

	return length;
}
int main(){
	netsnmp_session session, *ss;
	netsnmp_pdu *pdu;
	netsnmp_pdu *response;
	struct variable_list *vars;
	oid base[128]={1,3,6,1,2,1,2,2,1,10};
	size_t base_length=10;
	int status;
	init_snmp("APC Check");
	snmp_sess_init(&session);
	session.version = SNMP_VERSION_1;
	session.community = (u_char*)"public";
	session.community_len = strlen((const char*)session.community);
	session.peername = "127.0.0.1";//ここでIP指定
	ss = snmp_open(&session);
	if(ss == NULL){
		snmp_sess_perror("snmp_open", &session);
		exit(1);
	}
	int new_length=find_last_oid(ss, base, base_length);
	pdu = snmp_pdu_create(SNMP_MSG_GET);
	snmp_add_null_var(pdu, base, new_length);
	status = snmp_synch_response(ss, pdu, &response);
	if(status != STAT_SUCCESS || !response){
		snmp_sess_perror("snmp_synch_response", ss);
		exit(1);
	}
	for(vars = response->variables; vars; vars = vars->next_variable){
		int i;
		for(i=0;i<vars->name_length;i++){
			printf("%d ",vars->name[i]);
		}
		print_value(vars->name, vars->name_length, vars);
	}
	snmp_free_pdu(response);
	snmp_close(ss);
	return 0;
}