4 * Francois Gouget, 1999, based on the work of
5 * RW Hall, 1999, based on public domain code PING.C by Mike Muus (1983)
6 * and later works (c) 1989 Regents of Univ. of California - see copyright
7 * notice at end of source-code.
9 * This library is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU Lesser General Public
11 * License as published by the Free Software Foundation; either
12 * version 2.1 of the License, or (at your option) any later version.
14 * This library is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 * Lesser General Public License for more details.
19 * You should have received a copy of the GNU Lesser General Public
20 * License along with this library; if not, write to the Free Software
21 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
25 * - Systems like FreeBSD don't seem to support the IP_TTL option and maybe others.
26 * But using IP_HDRINCL and building the IP header by hand might work.
27 * - Not all IP options are supported.
28 * - Are ICMP handles real handles, i.e. inheritable and all? There might be some
29 * more work to do here, including server side stuff with synchronization.
30 * - Is it correct to use malloc for the internal buffer, for allocating the
32 * - This API should probably be thread safe. Is it really?
33 * - Using the winsock functions has not been tested.
38 #include <sys/types.h>
39 #ifdef HAVE_SYS_SOCKET_H
40 # include <sys/socket.h>
45 #ifdef HAVE_NETINET_IN_SYSTM_H
46 # include <netinet/in_systm.h>
48 #ifdef HAVE_NETINET_IN_H
49 # include <netinet/in.h>
52 #ifdef HAVE_SYS_TIME_H
53 # include <sys/time.h>
61 #ifdef HAVE_ARPA_INET_H
62 # include <arpa/inet.h>
64 #ifdef HAVE_SYS_POLL_H
65 # include <sys/poll.h>
73 #include "wine/debug.h"
75 /* Set up endiannes macros for the ip and ip_icmp BSD headers */
77 #define BIG_ENDIAN 4321
80 #define LITTLE_ENDIAN 1234
83 #ifdef WORDS_BIGENDIAN
84 #define BYTE_ORDER BIG_ENDIAN
86 #define BYTE_ORDER LITTLE_ENDIAN
88 #endif /* BYTE_ORDER */
90 #define u_int16_t WORD
91 #define u_int32_t DWORD
93 /* These are BSD headers. We use these here because they are needed on
94 * libc5 Linux systems. On other platforms they are usually simply more
95 * complete than the native stuff, and cause less portability problems
96 * so we use them anyway.
102 WINE_DEFAULT_DEBUG_CHANNEL(icmp);
107 IP_OPTION_INFORMATION default_opts;
110 #define IP_OPTS_UNKNOWN 0
111 #define IP_OPTS_DEFAULT 1
112 #define IP_OPTS_CUSTOM 2
114 /* The sequence number is unique process wide, so that all threads
115 * have a distinct sequence number.
117 static LONG icmp_sequence=0;
119 static int in_cksum(u_short *addr, int len)
132 *(u_char *)(&answer) = *(u_char *)w;
136 sum = (sum >> 16) + (sum & 0xffff);
148 /***********************************************************************
149 * IcmpCreateFile (ICMP.@)
151 HANDLE WINAPI IcmpCreateFile(VOID)
155 int sid=socket(AF_INET,SOCK_RAW,IPPROTO_ICMP);
157 MESSAGE("WARNING: Trying to use ICMP (network ping) will fail unless running as root\n");
158 SetLastError(ERROR_ACCESS_DENIED);
159 return INVALID_HANDLE_VALUE;
162 icp=HeapAlloc(GetProcessHeap(), 0, sizeof(*icp));
164 SetLastError(IP_NO_RESOURCES);
165 return INVALID_HANDLE_VALUE;
168 icp->default_opts.OptionsSize=IP_OPTS_UNKNOWN;
173 /***********************************************************************
174 * IcmpCloseHandle (ICMP.@)
176 BOOL WINAPI IcmpCloseHandle(HANDLE IcmpHandle)
178 icmp_t* icp=(icmp_t*)IcmpHandle;
179 if (IcmpHandle==INVALID_HANDLE_VALUE) {
180 /* FIXME: in fact win98 seems to ignore the handle value !!! */
181 SetLastError(ERROR_INVALID_HANDLE);
185 shutdown(icp->sid,2);
186 HeapFree(GetProcessHeap (), 0, icp);
191 /***********************************************************************
192 * IcmpSendEcho (ICMP.@)
194 DWORD WINAPI IcmpSendEcho(
196 IPAddr DestinationAddress,
199 PIP_OPTION_INFORMATION RequestOptions,
205 icmp_t* icp=(icmp_t*)IcmpHandle;
206 unsigned char* reqbuf;
209 struct icmp_echo_reply* ier;
210 struct ip* ip_header;
211 struct icmp* icmp_header;
216 DWORD send_time,recv_time;
217 struct sockaddr_in addr;
218 unsigned int addrlen;
219 unsigned short id,seq,cksum;
222 if (IcmpHandle==INVALID_HANDLE_VALUE) {
223 /* FIXME: in fact win98 seems to ignore the handle value !!! */
224 SetLastError(ERROR_INVALID_HANDLE);
228 if (ReplySize<sizeof(ICMP_ECHO_REPLY)+ICMP_MINLEN) {
229 SetLastError(IP_BUF_TOO_SMALL);
232 /* check the request size against SO_MAX_MSG_SIZE using getsockopt */
234 /* Prepare the request */
235 id=getpid() & 0xFFFF;
236 seq=InterlockedIncrement(&icmp_sequence) & 0xFFFF;
238 reqsize=ICMP_MINLEN+RequestSize;
239 reqbuf=HeapAlloc(GetProcessHeap(), 0, reqsize);
241 SetLastError(ERROR_OUTOFMEMORY);
245 icmp_header=(struct icmp*)reqbuf;
246 icmp_header->icmp_type=ICMP_ECHO;
247 icmp_header->icmp_code=0;
248 icmp_header->icmp_cksum=0;
249 icmp_header->icmp_id=id;
250 icmp_header->icmp_seq=seq;
251 memcpy(reqbuf+ICMP_MINLEN, RequestData, RequestSize);
252 icmp_header->icmp_cksum=cksum=in_cksum((u_short*)reqbuf,reqsize);
254 addr.sin_family=AF_INET;
255 addr.sin_addr.s_addr=DestinationAddress;
258 if (RequestOptions!=NULL) {
260 if (icp->default_opts.OptionsSize==IP_OPTS_UNKNOWN) {
262 /* Before we mess with the options, get the default values */
264 getsockopt(icp->sid,IPPROTO_IP,IP_TTL,(char *)&val,&len);
265 icp->default_opts.Ttl=val;
268 getsockopt(icp->sid,IPPROTO_IP,IP_TOS,(char *)&val,&len);
269 icp->default_opts.Tos=val;
270 /* FIXME: missing: handling of IP 'flags', and all the other options */
273 val=RequestOptions->Ttl;
274 setsockopt(icp->sid,IPPROTO_IP,IP_TTL,(char *)&val,sizeof(val));
275 val=RequestOptions->Tos;
276 setsockopt(icp->sid,IPPROTO_IP,IP_TOS,(char *)&val,sizeof(val));
277 /* FIXME: missing: handling of IP 'flags', and all the other options */
279 icp->default_opts.OptionsSize=IP_OPTS_CUSTOM;
280 } else if (icp->default_opts.OptionsSize==IP_OPTS_CUSTOM) {
283 /* Restore the default options */
284 val=icp->default_opts.Ttl;
285 setsockopt(icp->sid,IPPROTO_IP,IP_TTL,(char *)&val,sizeof(val));
286 val=icp->default_opts.Tos;
287 setsockopt(icp->sid,IPPROTO_IP,IP_TOS,(char *)&val,sizeof(val));
288 /* FIXME: missing: handling of IP 'flags', and all the other options */
290 icp->default_opts.OptionsSize=IP_OPTS_DEFAULT;
293 /* Get ready for receiving the reply
294 * Do it before we send the request to minimize the risk of introducing delays
298 addrlen=sizeof(addr);
300 ip_header=(struct ip *) ((char *) ReplyBuffer+sizeof(ICMP_ECHO_REPLY));
301 endbuf=(char *) ReplyBuffer+ReplySize;
302 maxlen=ReplySize-sizeof(ICMP_ECHO_REPLY);
304 /* Send the packet */
305 TRACE("Sending %d bytes (RequestSize=%d) to %s\n", reqsize, RequestSize, inet_ntoa(addr.sin_addr));
308 unsigned char* buf=(unsigned char*)reqbuf;
310 printf("Output buffer:\n");
311 for (i=0;i<reqsize;i++)
312 printf("%2x,", buf[i]);
317 send_time = GetTickCount();
318 res=sendto(icp->sid, reqbuf, reqsize, 0, (struct sockaddr*)&addr, sizeof(addr));
319 HeapFree(GetProcessHeap (), 0, reqbuf);
322 SetLastError(IP_PACKET_TOO_BIG);
326 SetLastError(IP_DEST_NET_UNREACHABLE);
329 SetLastError(IP_DEST_HOST_UNREACHABLE);
332 TRACE("unknown error: errno=%d\n",errno);
333 SetLastError(IP_GENERAL_FAILURE);
340 ip_header_len=0; /* because gcc was complaining */
341 while ((res=poll(&fdr,1,Timeout))>0) {
342 recv_time = GetTickCount();
343 res=recvfrom(icp->sid, (char*)ip_header, maxlen, 0, (struct sockaddr*)&addr,&addrlen);
344 TRACE("received %d bytes from %s\n",res, inet_ntoa(addr.sin_addr));
345 ier->Status=IP_REQ_TIMED_OUT;
347 /* Check whether we should ignore this packet */
348 if ((ip_header->ip_p==IPPROTO_ICMP) && (res>=sizeof(struct ip)+ICMP_MINLEN)) {
349 ip_header_len=ip_header->ip_hl << 2;
350 icmp_header=(struct icmp*)(((char*)ip_header)+ip_header_len);
351 TRACE("received an ICMP packet of type,code=%d,%d\n",icmp_header->icmp_type,icmp_header->icmp_code);
352 if (icmp_header->icmp_type==ICMP_ECHOREPLY) {
353 if ((icmp_header->icmp_id==id) && (icmp_header->icmp_seq==seq))
354 ier->Status=IP_SUCCESS;
356 switch (icmp_header->icmp_type) {
358 switch (icmp_header->icmp_code) {
359 case ICMP_UNREACH_HOST:
360 #ifdef ICMP_UNREACH_HOST_UNKNOWN
361 case ICMP_UNREACH_HOST_UNKNOWN:
363 #ifdef ICMP_UNREACH_ISOLATED
364 case ICMP_UNREACH_ISOLATED:
366 #ifdef ICMP_UNREACH_HOST_PROHIB
367 case ICMP_UNREACH_HOST_PROHIB:
369 #ifdef ICMP_UNREACH_TOSHOST
370 case ICMP_UNREACH_TOSHOST:
372 ier->Status=IP_DEST_HOST_UNREACHABLE;
374 case ICMP_UNREACH_PORT:
375 ier->Status=IP_DEST_PORT_UNREACHABLE;
377 case ICMP_UNREACH_PROTOCOL:
378 ier->Status=IP_DEST_PROT_UNREACHABLE;
380 case ICMP_UNREACH_SRCFAIL:
381 ier->Status=IP_BAD_ROUTE;
384 ier->Status=IP_DEST_NET_UNREACHABLE;
388 if (icmp_header->icmp_code==ICMP_TIMXCEED_REASS)
389 ier->Status=IP_TTL_EXPIRED_REASSEM;
391 ier->Status=IP_TTL_EXPIRED_TRANSIT;
394 ier->Status=IP_PARAM_PROBLEM;
396 case ICMP_SOURCEQUENCH:
397 ier->Status=IP_SOURCE_QUENCH;
400 if (ier->Status!=IP_REQ_TIMED_OUT) {
401 struct ip* rep_ip_header;
402 struct icmp* rep_icmp_header;
403 /* The ICMP header size of all the packets we accept is the same */
404 rep_ip_header=(struct ip*)(((char*)icmp_header)+ICMP_MINLEN);
405 rep_icmp_header=(struct icmp*)(((char*)rep_ip_header)+(rep_ip_header->ip_hl << 2));
407 /* Make sure that this is really a reply to our packet */
408 if (ip_header_len+ICMP_MINLEN+(rep_ip_header->ip_hl << 2)+ICMP_MINLEN>ip_header->ip_len) {
409 ier->Status=IP_REQ_TIMED_OUT;
410 } else if ((rep_icmp_header->icmp_type!=ICMP_ECHO) ||
411 (rep_icmp_header->icmp_code!=0) ||
412 (rep_icmp_header->icmp_id!=id) ||
413 /* windows doesn't check this checksum, else tracert */
414 /* behind a Linux 2.2 masquerading firewall would fail*/
415 /* (rep_icmp_header->icmp_cksum!=cksum) || */
416 (rep_icmp_header->icmp_seq!=seq)) {
417 /* This was not a reply to one of our packets after all */
418 TRACE("skipping type,code=%d,%d id,seq=%d,%d cksum=%d\n",
419 rep_icmp_header->icmp_type,rep_icmp_header->icmp_code,
420 rep_icmp_header->icmp_id,rep_icmp_header->icmp_seq,
421 rep_icmp_header->icmp_cksum);
422 TRACE("expected type,code=8,0 id,seq=%d,%d cksum=%d\n",
425 ier->Status=IP_REQ_TIMED_OUT;
431 if (ier->Status==IP_REQ_TIMED_OUT) {
432 /* This packet was not for us.
433 * Decrease the timeout so that we don't enter an endless loop even
434 * if we get flooded with ICMP packets that are not for us.
436 Timeout -= (recv_time - send_time);
437 if (Timeout < 0) Timeout = 0;
440 /* This is a reply to our packet */
441 memcpy(&ier->Address,&ip_header->ip_src,sizeof(IPAddr));
442 /* Status is already set */
443 ier->RoundTripTime= recv_time - send_time;
444 ier->DataSize=res-ip_header_len-ICMP_MINLEN;
446 ier->Data=endbuf-ier->DataSize;
447 memmove(ier->Data,((char*)ip_header)+ip_header_len+ICMP_MINLEN,ier->DataSize);
448 ier->Options.Ttl=ip_header->ip_ttl;
449 ier->Options.Tos=ip_header->ip_tos;
450 ier->Options.Flags=ip_header->ip_off >> 13;
451 ier->Options.OptionsSize=ip_header_len-sizeof(struct ip);
452 if (ier->Options.OptionsSize!=0) {
453 ier->Options.OptionsData=(unsigned char *) ier->Data-ier->Options.OptionsSize;
454 /* FIXME: We are supposed to rearrange the option's 'source route' data */
455 memmove(ier->Options.OptionsData,((char*)ip_header)+ip_header_len,ier->Options.OptionsSize);
456 endbuf=(char*)ier->Options.OptionsData;
458 ier->Options.OptionsData=NULL;
462 /* Prepare for the next packet */
464 ip_header=(struct ip*)(((char*)ip_header)+sizeof(ICMP_ECHO_REPLY));
465 maxlen=endbuf-(char*)ip_header;
467 /* Check out whether there is more but don't wait this time */
471 res=ier-(ICMP_ECHO_REPLY*)ReplyBuffer;
473 SetLastError(IP_REQ_TIMED_OUT);
474 TRACE("received %d replies\n",res);
479 * Copyright (c) 1989 The Regents of the University of California.
480 * All rights reserved.
482 * This code is derived from software contributed to Berkeley by
485 * Redistribution and use in source and binary forms, with or without
486 * modification, are permitted provided that the following conditions
488 * 1. Redistributions of source code must retain the above copyright
489 * notice, this list of conditions and the following disclaimer.
490 * 2. Redistributions in binary form must reproduce the above copyright
491 * notice, this list of conditions and the following disclaimer in the
492 * documentation and/or other materials provided with the distribution.
493 * 3. Neither the name of the University nor the names of its contributors
494 * may be used to endorse or promote products derived from this software
495 * without specific prior written permission.
497 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
498 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
499 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
500 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
501 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
502 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
503 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
504 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
505 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
506 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF