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
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
|
#!/usr/bin/php -q
<?php
/*
+-------------------------------------------------------------------------+
| Copyright (C) 2004 Larry Adams & Ian Berry |
| |
| This program is free software; you can redistribute it and/or |
| modify it under the terms of the GNU General Public License |
| as published by the Free Software Foundation; either version 2 |
| of the License, or (at your option) any later version. |
| |
| This program is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| GNU General Public License for more details. |
+-------------------------------------------------------------------------+
| cacti: a php-based graphing solution |
+-------------------------------------------------------------------------+
| Most of this code has been designed, written and is maintained by |
| Ian Berry. See about.php for specific developer credit. Any questions |
| or comments regarding this code should be directed to: |
| - iberry@raxnet.net |
+-------------------------------------------------------------------------+
| - raXnet - http://www.raxnet.net/ |
+-------------------------------------------------------------------------+
*/
class Net_Ping
{
var $socket;
var $host;
var $ping_status;
var $ping_response;
var $snmp_status;
var $snmp_response;
var $request;
var $request_len;
var $reply;
var $timeout;
var $retries;
var $precision;
var $time;
var $timer_start_time;
function Net_Ping()
{
}
function close_socket()
{
socket_close($this->socket);
}
function start_time()
{
$this->timer_start_time = microtime();
}
function get_time($acc=2)
{
// format start time
$start_time = explode (" ", $this->timer_start_time);
$start_time = $start_time[1] + $start_time[0];
// get and format end time
$end_time = explode (" ", microtime());
$end_time = $end_time[1] + $end_time[0];
return number_format ($end_time - $start_time, $acc);
}
function build_udp_packet() {
$data = "cacti-monitoring-system"; // the actual test data
// now lets build the actual icmp packet
$this->request = chr(0) . chr(1) . chr(0) . $data . chr(0);
$this->request_len = strlen($this->request);
}
function build_icmp_packet() {
$data = "cacti-monitoring-system"; // the actual test data
$type = "\x08"; // 8 echo message; 0 echo reply message
$code = "\x00"; // always 0 for this program
$chksm = "\xCE\x96"; // generate checksum for icmp request
$id = "\x40\x00"; // we will have to work with this later
$sqn = "\x00\x00"; // we will have to work with this later
// now lets build the actual icmp packet
$this->request = $type.$code.$chksm.$id.$sqn.$data;
$this->request_len = strlen($this->request);
}
function ping_icmp() {
/* ping me */
if ($this->host["hostname"]) {
/* initialize variables */
$this->ping_status = "down";
$this->ping_response = "ICMP Ping timed out";
/* initialize the socket */
$this->socket = socket_create(AF_INET, SOCK_RAW, 1);
socket_set_block($this->socket);
/* set the timeout */
socket_set_option($this->socket,
SOL_SOCKET, // socket level
SO_RCVTIMEO, // timeout option
array(
"sec"=>$this->timeout, // Timeout in seconds
"usec"=>0 // I assume timeout in microseconds
));
if (@socket_connect($this->socket, $this->host["hostname"], NULL)) {
// do nothing
} else {
$this->ping_response = "Cannot connect to host";
$this->ping_status = "down";
return false;
}
/* build the packet */
$this->build_icmp_packet();
$retry_count = 0;
while (1) {
if ($retry_count >= $this->retries) {
$this->status = "down";
$this->response = "ICMP ping Timed out";
return false;
}
/* get start time */
$this->start_time();
socket_write($this->socket, $this->request, $this->request_len);
$code = @socket_recv($this->socket, $this->reply, 256, 0);
/* get the end time */
$this->time = $this->get_time($this->precision);
if ($code) {
$this->ping_status = $this->time * 1000;
$this->ping_response = "Host is alive";
return true;
}
$retry_count++;
}
$this->close_socket();
} else {
$this->ping_status = "down";
$this->ping_response = "Destination address not specified";
return false;
}
}
function ping_snmp() {
/* initialize variables */
$this->snmp_status = "down";
$this->snmp_response = "Host did not respond to SNMP";
$output = "";
/* get start time */
$this->start_time();
/* poll ifDescription for status */
$retry_count = 0;
while (1) {
if ($retry_count >= $this->retries) {
$this->snmp_status = "down";
$this->snmp_response = "Host did not respond to SNMP";
return false;
}
$output = cacti_snmp_get($this->host["hostname"],
$this->host["snmp_community"],
".1.3.6.1.2.1.1.1.0" ,
$this->host["snmp_version"],
$this->host["snmp_username"],
$this->host["snmp_password"],
$this->host["snmp_port"],
$this->host["snmp_timeout"],
SNMP_CMDPHP);
/* determine total time +- ~10% */
$this->time = $this->get_time($this->precision);
/* check result for uptime */
if (!empty($output)) {
/* calculte total time */
$this->snmp_status = $this->time*1000;
$this->snmp_response = "Host responded to SNMP";
return true;
}
$retry_count++;
}
} /* ping_snmp */
function ping_udp() {
/* Host must be nonblank */
if ($this->host["hostname"]) {
/* initialize variables */
$this->ping_status = "down";
$this->ping_response = "default";
/* initilize the socket */
$this->socket = socket_create(AF_INET, SOCK_DGRAM, SOL_UDP);
socket_set_block($this->socket);
/* set the socket timeout */
socket_set_option($this->socket,
SOL_SOCKET, // socket level
SO_RCVTIMEO, // timeout option
array(
"sec"=>$this->timeout, // Timeout in seconds
"usec"=>0 // I assume timeout in microseconds
));
if (@socket_connect($this->socket, $this->host["hostname"], 33439)) {
// do nothing
} else {
$this->ping_status = "down";
$this->ping_response = "Cannot connect to host";
return false;
}
/* format packet */
$this->build_udp_packet();
$retry_count = 0;
while (1) {
if ($retry_count >= $this->retries) {
$this->ping_response = "UDP ping timed out";
$this->ping_status = "down";
return false;
}
/* set start time */
$this->start_time();
/* send packet to destination */
socket_write($this->socket, $this->request, $this->request_len);
/* get packet response */
$code = @socket_recv($this->socket, $this->reply, 256, 0);
/* caculate total time */
$this->time = $this->get_time($this->precision);
if (($code) || (empty($code))) {
if (($this->time*1000) <= $this->timeout) {
$this->ping_response = "Host is Alive";
$this->ping_status = $this->time*1000;
return true;
}
}
$retry_count++;
}
$this->close_socket();
} else {
$this->ping_response = "Destination address not specified";
$this->ping_status = "down";
return false;
}
} /* end ping_udp */
function ping($avail_method = AVAIL_SNMP_AND_PING, $ping_type = ICMP_PING, $timeout=500, $retries=3)
{
/* initialize variables */
$ping_ping = true;
$ping_snmp = true;
$this->ping_status = "down";
$this->ping_response = "Ping not performed due to setting.";
$this->snmp_status = "down";
$this->snmp_response = "SNMP not performed due to setting or ping result.";
/* do parameter checking before call */
/* apply defaults if parameters are spooky */
if ((int)$avail_method <= 0) $avail_method=AVAIL_SNMP;
if ((int)$ping_type <= 0) $ping_type=PING_UDP;
if (((int)$retries <= 0) || ((int)$retries > 5))
$this->retries = 2;
else
$this->retries = $retries;
if ((int)$timeout <= 0)
$this->timeout=500;
else
$this->timeout=$timeout;
/* decimal precision is 0.0000 */
$this->precision = 5;
/* snmp pinging has been selected at a minimum */
$ping_result = false;
$snmp_result = false;
/* icmp/udp ping test */
if (($avail_method == AVAIL_SNMP_AND_PING) || ($avail_method == AVAIL_PING)) {
if ($ping_type == PING_ICMP) {
$ping_result = $this->ping_icmp();
}else if ($ping_type == PING_UDP) {
$ping_result = $this->ping_udp();
}
}
/* snmp test */
if (($avail_method == AVAIL_SNMP) || (($avail_method == AVAIL_SNMP_AND_PING) && ($ping_result == true))) {
if ($this->host["snmp_community"] != "") {
$snmp_result = $this->ping_snmp();
}else{
$snmp_result = true;
}
}else if (($avail_method == AVAIL_SNMP_AND_PING) && ($ping_result == false)) {
$snmp_result = false;
}
switch ($avail_method) {
case AVAIL_SNMP_AND_PING:
if ($snmp_result)
return true;
if (!$ping_result)
return false;
else
return false;
case AVAIL_SNMP:
if ($snmp_result)
return true;
else
return false;
case AVAIL_PING:
if ($ping_result)
return true;
else
return false;
default:
return false;
}
} /* end_ping */
}
?>
|
