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git.ipfire.org Git - thirdparty/squid.git/blob - src/icmp/IcmpPinger.cc
4 * DEBUG: section 42 ICMP Pinger program
5 * AUTHOR: Duane Wessels
7 * SQUID Web Proxy Cache http://www.squid-cache.org/
8 * ----------------------------------------------------------
10 * Squid is the result of efforts by numerous individuals from
11 * the Internet community; see the CONTRIBUTORS file for full
12 * details. Many organizations have provided support for Squid's
13 * development; see the SPONSORS file for full details. Squid is
14 * Copyrighted (C) 2001 by the Regents of the University of
15 * California; see the COPYRIGHT file for full details. Squid
16 * incorporates software developed and/or copyrighted by other
17 * sources; see the CREDITS file for full details.
19 * This program is free software; you can redistribute it and/or modify
20 * it under the terms of the GNU General Public License as published by
21 * the Free Software Foundation; either version 2 of the License, or
22 * (at your option) any later version.
24 * This program is distributed in the hope that it will be useful,
25 * but WITHOUT ANY WARRANTY; without even the implied warranty of
26 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
27 * GNU General Public License for more details.
29 * You should have received a copy of the GNU General Public License
30 * along with this program; if not, write to the Free Software
31 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA.
35 #define SQUID_HELPER 1
41 #include "SquidTime.h"
42 #include "IcmpPinger.h"
47 IcmpPinger::IcmpPinger() : Icmp()
49 // these start invalid. Setup properly in Open()
50 socket_from_squid
= -1;
54 IcmpPinger::~IcmpPinger()
61 Win32SockCleanup(void)
69 IcmpPinger::Open(void)
75 char buf
[sizeof(wpi
)];
78 struct sockaddr_in PS
;
80 WSAStartup(2, &wsaData
);
81 atexit(Win32SockCleanup
);
84 _db_init(NULL
, "ALL,1");
87 x
= read(0, buf
, sizeof(wpi
));
89 if (x
< (int)sizeof(wpi
)) {
91 debugs(42, 0, HERE
<< "read: FD 0: " << xstrerror());
96 xmemcpy(&wpi
, buf
, sizeof(wpi
));
99 x
= read(0, buf
, sizeof(PS
));
101 if (x
< (int)sizeof(PS
)) {
103 debugs(42, 0, HERE
<< "read: FD 0: " << xstrerror());
104 write(1, "ERR\n", 4);
108 xmemcpy(&PS
, buf
, sizeof(PS
));
110 icmp_sock
= WSASocket(FROM_PROTOCOL_INFO
, FROM_PROTOCOL_INFO
, FROM_PROTOCOL_INFO
, &wpi
, 0, 0);
112 if (icmp_sock
== -1) {
114 debugs(42, 0, HERE
<< "WSASocket: " << xstrerror());
115 write(1, "ERR\n", 4);
119 x
= connect(icmp_sock
, (struct sockaddr
*) &PS
, sizeof(PS
));
121 if (SOCKET_ERROR
== x
) {
123 debugs(42, 0, HERE
<< "connect: " << xstrerror());
124 write(1, "ERR\n", 4);
129 memset(buf
, 0, sizeof(buf
));
130 x
= recv(icmp_sock
, (void *) buf
, sizeof(buf
), 0);
133 debugs(42, 0, HERE
<< "recv: " << xstrerror());
137 x
= send(icmp_sock
, (const void *) buf
, strlen(buf
), 0);
139 if (x
< 3 || strncmp("OK\n", buf
, 3)) {
140 debugs(42, 0, HERE
<< "recv: " << xstrerror());
145 debugs(42, 1, "pinger: Squid socket opened");
147 /* windows uses a socket stream as a dual-direction channel */
148 socket_to_squid
= icmp_sock
;
149 socket_from_squid
= icmp_sock
;
153 #else /* !_SQUID_MSWIN_ */
155 /* non-windows apps use stdin/out pipes as the squid channel(s) */
156 socket_from_squid
= 0; // use STDIN macro ??
157 socket_to_squid
= 1; // use STDOUT macro ??
158 return socket_to_squid
;
163 IcmpPinger::Close(void)
167 shutdown(icmp_sock
, SD_BOTH
);
172 /* also shutdown the helper engines */
180 IcmpPinger::Recv(void)
182 static pingerEchoData pecho
;
186 memset(&pecho
, '\0', sizeof(pecho
));
187 n
= recv(socket_from_squid
, &pecho
, sizeof(pecho
), 0);
190 debugs(42, 1, "Pinger exiting.");
197 debugs(42, 0, HERE
<< "EOF encountered. Pinger exiting.\n");
203 guess_size
= n
- (sizeof(pingerEchoData
) - PINGER_PAYLOAD_SZ
);
205 if (guess_size
!= pecho
.psize
) {
206 debugs(42, 2, HERE
<< "size mismatch, guess=" << guess_size
<< ", psize=" << pecho
.psize
);
207 /* don't process this message, but keep running */
212 /* pass request for ICMPv6 handing */
213 if (pecho
.to
.IsIPv6()) {
214 debugs(42, 2, HERE
<< " Pass " << pecho
.to
<< " off to ICMPv6 module.");
215 icmp6
.SendEcho(pecho
.to
,
222 /* pass the packet for ICMP handling */
223 else if (pecho
.to
.IsIPv4()) {
224 debugs(42, 2, HERE
<< " Pass " << pecho
.to
<< " off to ICMPv4 module.");
225 icmp4
.SendEcho(pecho
.to
,
230 debugs(42, 1, HERE
<< " IP has unknown Type. " << pecho
.to
);
235 IcmpPinger::SendResult(pingerReplyData
&preply
, int len
)
237 debugs(42, 2, HERE
<< "return result to squid. len=" << len
);
239 if (send(socket_to_squid
, &preply
, len
, 0) < 0) {
240 debugs(42, 0, "pinger: FATAL error on send: " << xstrerror());
246 #endif /* USE_ICMP */