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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 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>
70 #include "wine/debug.h"
72 /* Set up endiannes macros for the ip and ip_icmp BSD headers */
74 #define BIG_ENDIAN 4321
77 #define LITTLE_ENDIAN 1234
80 #ifdef WORDS_BIGENDIAN
81 #define BYTE_ORDER BIG_ENDIAN
83 #define BYTE_ORDER LITTLE_ENDIAN
85 #endif /* BYTE_ORDER */
87 #define u_int16_t WORD
88 #define u_int32_t DWORD
90 /* These are BSD headers. We use these here because they are needed on
91 * libc5 Linux systems. On other platforms they are usually simply more
92 * complete than the native stuff, and cause less portability problems
93 * so we use them anyway.
99 WINE_DEFAULT_DEBUG_CHANNEL(icmp);
104 IP_OPTION_INFORMATION default_opts;
107 #define IP_OPTS_UNKNOWN 0
108 #define IP_OPTS_DEFAULT 1
109 #define IP_OPTS_CUSTOM 2
111 /* The sequence number is unique process wide, so that all threads
112 * have a distinct sequence number.
114 static LONG icmp_sequence=0;
116 static int in_cksum(u_short *addr, int len)
129 *(u_char *)(&answer) = *(u_char *)w;
133 sum = (sum >> 16) + (sum & 0xffff);
145 /***********************************************************************
146 * IcmpCreateFile (ICMP.@)
148 HANDLE WINAPI IcmpCreateFile(VOID)
152 int sid=socket(AF_INET,SOCK_RAW,IPPROTO_ICMP);
154 MESSAGE("WARNING: Trying to use ICMP (network ping) will fail unless running as root\n");
155 SetLastError(ERROR_ACCESS_DENIED);
156 return INVALID_HANDLE_VALUE;
159 icp=HeapAlloc(GetProcessHeap(), 0, sizeof(*icp));
161 SetLastError(IP_NO_RESOURCES);
162 return INVALID_HANDLE_VALUE;
165 icp->default_opts.OptionsSize=IP_OPTS_UNKNOWN;
170 /***********************************************************************
171 * IcmpCloseHandle (ICMP.@)
173 BOOL WINAPI IcmpCloseHandle(HANDLE IcmpHandle)
175 icmp_t* icp=(icmp_t*)IcmpHandle;
176 if (IcmpHandle==INVALID_HANDLE_VALUE) {
177 /* FIXME: in fact win98 seems to ignore the handle value !!! */
178 SetLastError(ERROR_INVALID_HANDLE);
182 shutdown(icp->sid,2);
183 HeapFree(GetProcessHeap (), 0, icp);
188 /***********************************************************************
189 * IcmpSendEcho (ICMP.@)
191 DWORD WINAPI IcmpSendEcho(
193 IPAddr DestinationAddress,
196 PIP_OPTION_INFORMATION RequestOptions,
202 icmp_t* icp=(icmp_t*)IcmpHandle;
203 unsigned char* reqbuf;
206 struct icmp_echo_reply* ier;
207 struct ip* ip_header;
208 struct icmp* icmp_header;
213 struct timeval timeout;
214 DWORD send_time,recv_time;
215 struct sockaddr_in addr;
216 unsigned int addrlen;
217 unsigned short id,seq,cksum;
220 if (IcmpHandle==INVALID_HANDLE_VALUE) {
221 /* FIXME: in fact win98 seems to ignore the handle value !!! */
222 SetLastError(ERROR_INVALID_HANDLE);
226 if (ReplySize<sizeof(ICMP_ECHO_REPLY)+ICMP_MINLEN) {
227 SetLastError(IP_BUF_TOO_SMALL);
230 /* check the request size against SO_MAX_MSG_SIZE using getsockopt */
232 /* Prepare the request */
233 id=getpid() & 0xFFFF;
234 seq=InterlockedIncrement(&icmp_sequence) & 0xFFFF;
236 reqsize=ICMP_MINLEN+RequestSize;
237 reqbuf=HeapAlloc(GetProcessHeap(), 0, reqsize);
239 SetLastError(ERROR_OUTOFMEMORY);
243 icmp_header=(struct icmp*)reqbuf;
244 icmp_header->icmp_type=ICMP_ECHO;
245 icmp_header->icmp_code=0;
246 icmp_header->icmp_cksum=0;
247 icmp_header->icmp_id=id;
248 icmp_header->icmp_seq=seq;
249 memcpy(reqbuf+ICMP_MINLEN, RequestData, RequestSize);
250 icmp_header->icmp_cksum=cksum=in_cksum((u_short*)reqbuf,reqsize);
252 addr.sin_family=AF_INET;
253 addr.sin_addr.s_addr=DestinationAddress;
256 if (RequestOptions!=NULL) {
258 if (icp->default_opts.OptionsSize==IP_OPTS_UNKNOWN) {
260 /* Before we mess with the options, get the default values */
262 getsockopt(icp->sid,IPPROTO_IP,IP_TTL,(char *)&val,&len);
263 icp->default_opts.Ttl=val;
266 getsockopt(icp->sid,IPPROTO_IP,IP_TOS,(char *)&val,&len);
267 icp->default_opts.Tos=val;
268 /* FIXME: missing: handling of IP 'flags', and all the other options */
271 val=RequestOptions->Ttl;
272 setsockopt(icp->sid,IPPROTO_IP,IP_TTL,(char *)&val,sizeof(val));
273 val=RequestOptions->Tos;
274 setsockopt(icp->sid,IPPROTO_IP,IP_TOS,(char *)&val,sizeof(val));
275 /* FIXME: missing: handling of IP 'flags', and all the other options */
277 icp->default_opts.OptionsSize=IP_OPTS_CUSTOM;
278 } else if (icp->default_opts.OptionsSize==IP_OPTS_CUSTOM) {
281 /* Restore the default options */
282 val=icp->default_opts.Ttl;
283 setsockopt(icp->sid,IPPROTO_IP,IP_TTL,(char *)&val,sizeof(val));
284 val=icp->default_opts.Tos;
285 setsockopt(icp->sid,IPPROTO_IP,IP_TOS,(char *)&val,sizeof(val));
286 /* FIXME: missing: handling of IP 'flags', and all the other options */
288 icp->default_opts.OptionsSize=IP_OPTS_DEFAULT;
291 /* Get ready for receiving the reply
292 * Do it before we send the request to minimize the risk of introducing delays
295 FD_SET(icp->sid,&fdr);
296 timeout.tv_sec=Timeout/1000;
297 timeout.tv_usec=(Timeout % 1000)*1000;
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=select(icp->sid+1,&fdr,NULL,NULL,&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 int t = Timeout - (recv_time - send_time);
438 timeout.tv_sec = t / 1000;
439 timeout.tv_usec = (t % 1000) * 1000;
442 /* This is a reply to our packet */
443 memcpy(&ier->Address,&ip_header->ip_src,sizeof(IPAddr));
444 /* Status is already set */
445 ier->RoundTripTime= recv_time - send_time;
446 ier->DataSize=res-ip_header_len-ICMP_MINLEN;
448 ier->Data=endbuf-ier->DataSize;
449 memmove(ier->Data,((char*)ip_header)+ip_header_len+ICMP_MINLEN,ier->DataSize);
450 ier->Options.Ttl=ip_header->ip_ttl;
451 ier->Options.Tos=ip_header->ip_tos;
452 ier->Options.Flags=ip_header->ip_off >> 13;
453 ier->Options.OptionsSize=ip_header_len-sizeof(struct ip);
454 if (ier->Options.OptionsSize!=0) {
455 ier->Options.OptionsData=(unsigned char *) ier->Data-ier->Options.OptionsSize;
456 /* FIXME: We are supposed to rearrange the option's 'source route' data */
457 memmove(ier->Options.OptionsData,((char*)ip_header)+ip_header_len,ier->Options.OptionsSize);
458 endbuf=(char*)ier->Options.OptionsData;
460 ier->Options.OptionsData=NULL;
464 /* Prepare for the next packet */
466 ip_header=(struct ip*)(((char*)ip_header)+sizeof(ICMP_ECHO_REPLY));
467 maxlen=endbuf-(char*)ip_header;
469 /* Check out whether there is more but don't wait this time */
474 FD_SET(icp->sid,&fdr);
476 res=ier-(ICMP_ECHO_REPLY*)ReplyBuffer;
478 SetLastError(IP_REQ_TIMED_OUT);
479 TRACE("received %d replies\n",res);
484 * Copyright (c) 1989 The Regents of the University of California.
485 * All rights reserved.
487 * This code is derived from software contributed to Berkeley by
490 * Redistribution and use in source and binary forms, with or without
491 * modification, are permitted provided that the following conditions
493 * 1. Redistributions of source code must retain the above copyright
494 * notice, this list of conditions and the following disclaimer.
495 * 2. Redistributions in binary form must reproduce the above copyright
496 * notice, this list of conditions and the following disclaimer in the
497 * documentation and/or other materials provided with the distribution.
498 * 3. Neither the name of the University nor the names of its contributors
499 * may be used to endorse or promote products derived from this software
500 * without specific prior written permission.
502 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
503 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
504 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
505 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
506 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
507 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
508 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
509 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
510 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
511 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF