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.
11 * - Systems like FreeBSD don't seem to support the IP_TTL option and maybe others.
12 * But using IP_HDRINCL and building the IP header by hand might work.
13 * - Not all IP options are supported.
14 * - Are ICMP handles real handles, i.e. inheritable and all? There might be some
15 * more work to do here, including server side stuff with synchronization.
16 * - Is it correct to use malloc for the internal buffer, for allocating the
18 * - This API should probably be thread safe. Is it really?
19 * - Using the winsock functions has not been tested.
24 #include <sys/types.h>
25 #ifdef HAVE_SYS_SOCKET_H
26 # include <sys/socket.h>
29 #include <netinet/in_systm.h>
30 #ifdef HAVE_NETINET_IN_H
31 # include <netinet/in.h>
39 #ifdef HAVE_ARPA_INET_H
40 # include <arpa/inet.h>
50 #include "wine/ipexport.h"
51 #include "wine/icmpapi.h"
52 #include "debugtools.h"
54 /* Set up endiannes macros for the ip and ip_icmp BSD headers */
56 #define BIG_ENDIAN 4321
59 #define LITTLE_ENDIAN 1234
63 #ifdef WORDS_BIGENDIAN
64 #define BYTE_ORDER BIG_ENDIAN
66 #define BYTE_ORDER LITTLE_ENDIAN
68 #endif /* BYTE_ORDER */
70 #define u_int16_t WORD
71 #define u_int32_t DWORD
73 /* These are BSD headers. We use these here because they are needed on
74 * libc5 Linux systems. On other platforms they are usually simply more
75 * complete than the native stuff, and cause less portability problems
76 * so we use them anyway.
82 DEFAULT_DEBUG_CHANNEL(icmp)
84 /* Define the following macro to use the winsock functions */
88 /* FIXME: should we include winsock.h ???*/
89 SOCKET WINAPI WINSOCK_socket(INT af, INT type, INT protocol);
90 INT WINAPI WINSOCK_sendto(SOCKET s, char *buf, INT len, INT flags, struct sockaddr *to, INT tolen);
91 INT WINAPI WINSOCK_recvfrom(SOCKET s, char *buf,INT len, INT flags, struct sockaddr *from, INT *fromlen32);
92 INT WINAPI WINSOCK_shutdown(SOCKET s, INT how);
97 #define ISOCK_SOCKET SOCKET
98 #define ISOCK_ISVALID(a) ((a)!=INVALID_SOCKET)
99 #define ISOCK_getsockopt(a,b,c,d,e) WINSOCK_getsockopt(a,b,c,d,e)
100 #define ISOCK_recvfrom(a,b,c,d,e,f) WINSOCK_recvfrom(a,b,c,d,e,f)
101 #define ISOCK_select(a,b,c,d,e) WINSOCK_select(a,b,c,d,e)
102 #define ISOCK_sendto(a,b,c,d,e,f) WINSOCK_sendto(a,b,c,d,e,f)
103 #define ISOCK_setsockopt(a,b,c,d,e) WINSOCK_setsockopt(a,b,c,d,e)
104 #define ISOCK_shutdown(a,b) WINSOCK_shutdown(a,b)
105 #define ISOCK_socket(a,b,c) WINSOCK_socket(a,b,c)
107 #define ISOCK_SOCKET int
108 #define ISOCK_ISVALID(a) ((a)>=0)
109 #define ISOCK_getsockopt(a,b,c,d,e) getsockopt(a,b,c,d,e)
110 #define ISOCK_recvfrom(a,b,c,d,e,f) recvfrom(a,b,c,d,e,f)
111 #define ISOCK_select(a,b,c,d,e) select(a,b,c,d,e)
112 #define ISOCK_setsockopt(a,b,c,d,e) setsockopt(a,b,c,d,e)
113 #define ISOCK_sendto(a,b,c,d,e,f) sendto(a,b,c,d,e,f)
114 #define ISOCK_shutdown(a,b) shutdown(a,b)
115 #define ISOCK_socket(a,b,c) socket(a,b,c)
120 IP_OPTION_INFORMATION default_opts;
123 #define IP_OPTS_UNKNOWN 0
124 #define IP_OPTS_DEFAULT 1
125 #define IP_OPTS_CUSTOM 2
127 /* The sequence number is unique process wide, so that all threads
128 * have a distinct sequence number.
130 static LONG icmp_sequence=0;
132 static int in_cksum(u_short *addr, int len)
145 *(u_char *)(&answer) = *(u_char *)w;
149 sum = (sum >> 16) + (sum & 0xffff);
161 HANDLE WINAPI IcmpCreateFile(VOID)
165 ISOCK_SOCKET sid=ISOCK_socket(AF_INET,SOCK_RAW,IPPROTO_ICMP);
166 if (!ISOCK_ISVALID(sid)) {
167 MESSAGE("WARNING: Trying to use ICMP will fail unless running as root\n");
168 SetLastError(ERROR_ACCESS_DENIED);
169 return INVALID_HANDLE_VALUE;
172 icp=malloc(sizeof(*icp));
174 SetLastError(IP_NO_RESOURCES);
175 return INVALID_HANDLE_VALUE;
178 icp->default_opts.OptionsSize=IP_OPTS_UNKNOWN;
183 BOOL WINAPI IcmpCloseHandle(HANDLE IcmpHandle)
185 icmp_t* icp=(icmp_t*)IcmpHandle;
187 ISOCK_shutdown(icp->sid,2);
193 DWORD WINAPI IcmpSendEcho(
195 IPAddr DestinationAddress,
198 PIP_OPTION_INFORMATION RequestOptions,
204 icmp_t* icp=(icmp_t*)IcmpHandle;
205 unsigned char* reqbuf;
208 struct icmp_echo_reply* ier;
209 struct ip* ip_header;
210 struct icmp* icmp_header;
215 struct timeval timeout,send_time,recv_time;
216 struct sockaddr_in addr;
218 unsigned short id,seq,cksum;
221 if (ReplySize<sizeof(ICMP_ECHO_REPLY)+ICMP_MINLEN) {
222 SetLastError(IP_BUF_TOO_SMALL);
225 /* check the request size against SO_MAX_MSG_SIZE using getsockopt */
227 /* Prepare the request */
228 id=getpid() & 0xFFFF;
229 seq=InterlockedIncrement(&icmp_sequence) & 0xFFFF;
231 reqsize=ICMP_MINLEN+RequestSize;
232 reqbuf=malloc(reqsize);
234 SetLastError(ERROR_OUTOFMEMORY);
238 icmp_header=(struct icmp*)reqbuf;
239 icmp_header->icmp_type=ICMP_ECHO;
240 icmp_header->icmp_code=0;
241 icmp_header->icmp_cksum=0;
242 icmp_header->icmp_id=id;
243 icmp_header->icmp_seq=seq;
244 memcpy(reqbuf+ICMP_MINLEN, RequestData, RequestSize);
245 icmp_header->icmp_cksum=cksum=in_cksum((u_short*)reqbuf,reqsize);
247 addr.sin_family=AF_INET;
248 addr.sin_addr.s_addr=DestinationAddress;
251 if (RequestOptions!=NULL) {
253 if (icp->default_opts.OptionsSize==IP_OPTS_UNKNOWN) {
255 /* Before we mess with the options, get the default values */
257 ISOCK_getsockopt(icp->sid,IPPROTO_IP,IP_TTL,(char *)&val,&len);
258 icp->default_opts.Ttl=val;
261 ISOCK_getsockopt(icp->sid,IPPROTO_IP,IP_TOS,(char *)&val,&len);
262 icp->default_opts.Tos=val;
263 /* FIXME: missing: handling of IP 'flags', and all the other options */
266 val=RequestOptions->Ttl;
267 ISOCK_setsockopt(icp->sid,IPPROTO_IP,IP_TTL,(char *)&val,sizeof(val));
268 val=RequestOptions->Tos;
269 ISOCK_setsockopt(icp->sid,IPPROTO_IP,IP_TOS,(char *)&val,sizeof(val));
270 /* FIXME: missing: handling of IP 'flags', and all the other options */
272 icp->default_opts.OptionsSize=IP_OPTS_CUSTOM;
273 } else if (icp->default_opts.OptionsSize==IP_OPTS_CUSTOM) {
276 /* Restore the default options */
277 val=icp->default_opts.Ttl;
278 ISOCK_setsockopt(icp->sid,IPPROTO_IP,IP_TTL,(char *)&val,sizeof(val));
279 val=icp->default_opts.Tos;
280 ISOCK_setsockopt(icp->sid,IPPROTO_IP,IP_TOS,(char *)&val,sizeof(val));
281 /* FIXME: missing: handling of IP 'flags', and all the other options */
283 icp->default_opts.OptionsSize=IP_OPTS_DEFAULT;
286 /* Get ready for receiving the reply
287 * Do it before we send the request to minimize the risk of introducing delays
290 FD_SET(icp->sid,&fdr);
291 timeout.tv_sec=Timeout/1000;
292 timeout.tv_usec=(Timeout % 1000)*1000;
293 addrlen=sizeof(addr);
295 ip_header=ReplyBuffer+sizeof(ICMP_ECHO_REPLY);
296 endbuf=ReplyBuffer+ReplySize;
297 maxlen=ReplySize-sizeof(ICMP_ECHO_REPLY);
299 /* Send the packet */
300 TRACE("Sending %d bytes (RequestSize=%d) to %s\n", reqsize, RequestSize, inet_ntoa(addr.sin_addr));
303 unsigned char* buf=(unsigned char*)reqbuf;
305 printf("Output buffer:\n");
306 for (i=0;i<reqsize;i++)
307 printf("%2x,", buf[i]);
312 gettimeofday(&send_time,NULL);
313 res=ISOCK_sendto(icp->sid, reqbuf, reqsize, 0, (struct sockaddr*)&addr, sizeof(addr));
317 SetLastError(IP_PACKET_TOO_BIG);
321 SetLastError(IP_DEST_NET_UNREACHABLE);
324 SetLastError(IP_DEST_NET_UNREACHABLE);
327 TRACE("unknown error: errno=%d\n",errno);
328 SetLastError(ERROR_UNKNOWN);
335 ip_header_len=0; /* because gcc was complaining */
336 while ((res=ISOCK_select(icp->sid+1,&fdr,NULL,NULL,&timeout))>0) {
337 gettimeofday(&recv_time,NULL);
338 res=ISOCK_recvfrom(icp->sid, (char*)ip_header, maxlen, 0, (struct sockaddr*)&addr,&addrlen);
339 TRACE("received %d bytes from %s\n",res, inet_ntoa(addr.sin_addr));
340 ier->Status=IP_REQ_TIMED_OUT;
342 /* Check whether we should ignore this packet */
343 if ((ip_header->ip_p==IPPROTO_ICMP) && (res>=sizeof(struct ip)+ICMP_MINLEN)) {
344 ip_header_len=ip_header->ip_hl << 2;
345 icmp_header=(struct icmp*)(((char*)ip_header)+ip_header_len);
346 TRACE("received an ICMP packet of type,code=%d,%d\n",icmp_header->icmp_type,icmp_header->icmp_code);
347 if (icmp_header->icmp_type==ICMP_ECHOREPLY) {
348 if ((icmp_header->icmp_id==id) && (icmp_header->icmp_seq==seq))
349 ier->Status=IP_SUCCESS;
351 switch (icmp_header->icmp_type) {
353 switch (icmp_header->icmp_code) {
354 case ICMP_UNREACH_HOST:
355 #ifdef ICMP_UNREACH_HOST_UNKNOWN
356 case ICMP_UNREACH_HOST_UNKNOWN:
358 #ifdef ICMP_UNREACH_ISOLATED
359 case ICMP_UNREACH_ISOLATED:
361 #ifdef ICMP_UNREACH_HOST_PROHIB
362 case ICMP_UNREACH_HOST_PROHIB:
364 #ifdef ICMP_UNREACH_TOSHOST
365 case ICMP_UNREACH_TOSHOST:
367 ier->Status=IP_DEST_HOST_UNREACHABLE;
369 case ICMP_UNREACH_PORT:
370 ier->Status=IP_DEST_PORT_UNREACHABLE;
372 case ICMP_UNREACH_PROTOCOL:
373 ier->Status=IP_DEST_PROT_UNREACHABLE;
375 case ICMP_UNREACH_SRCFAIL:
376 ier->Status=IP_BAD_ROUTE;
379 ier->Status=IP_DEST_NET_UNREACHABLE;
383 if (icmp_header->icmp_code==ICMP_TIMXCEED_REASS)
384 ier->Status=IP_TTL_EXPIRED_REASSEM;
386 ier->Status=IP_TTL_EXPIRED_TRANSIT;
389 ier->Status=IP_PARAM_PROBLEM;
391 case ICMP_SOURCEQUENCH:
392 ier->Status=IP_SOURCE_QUENCH;
395 if (ier->Status!=IP_REQ_TIMED_OUT) {
396 struct ip* rep_ip_header;
397 struct icmp* rep_icmp_header;
398 /* The ICMP header size of all the packets we accept is the same */
399 rep_ip_header=(struct ip*)(((char*)icmp_header)+ICMP_MINLEN);
400 rep_icmp_header=(struct icmp*)(((char*)rep_ip_header)+(rep_ip_header->ip_hl << 2));
402 /* Make sure that this is really a reply to our packet */
403 if (ip_header_len+ICMP_MINLEN+(rep_ip_header->ip_hl << 2)+ICMP_MINLEN>ip_header->ip_len) {
404 ier->Status=IP_REQ_TIMED_OUT;
405 } else if ((rep_icmp_header->icmp_type!=ICMP_ECHO) ||
406 (rep_icmp_header->icmp_code!=0) ||
407 (rep_icmp_header->icmp_id!=id) ||
408 (rep_icmp_header->icmp_seq!=seq) ||
409 (rep_icmp_header->icmp_cksum!=cksum)) {
410 /* This was not a reply to one of our packets after all */
411 TRACE("skipping type,code=%d,%d id,seq=%d,%d cksum=%d\n",
412 rep_icmp_header->icmp_type,rep_icmp_header->icmp_code,
413 rep_icmp_header->icmp_id,rep_icmp_header->icmp_seq,
414 rep_icmp_header->icmp_cksum);
415 TRACE("expected type,code=8,0 id,seq=%d,%d cksum=%d\n",
418 ier->Status=IP_REQ_TIMED_OUT;
424 if (ier->Status==IP_REQ_TIMED_OUT) {
425 /* This packet was not for us.
426 * Decrease the timeout so that we don't enter an endless loop even
427 * if we get flooded with ICMP packets that are not for us.
429 timeout.tv_sec=Timeout/1000-(recv_time.tv_sec-send_time.tv_sec);
430 timeout.tv_usec=(Timeout % 1000)*1000+send_time.tv_usec-(recv_time.tv_usec-send_time.tv_usec);
431 if (timeout.tv_usec<0) {
432 timeout.tv_usec+=1000000;
437 /* This is a reply to our packet */
438 memcpy(&ier->Address,&ip_header->ip_src,sizeof(IPAddr));
439 /* Status is already set */
440 ier->RoundTripTime=(recv_time.tv_sec-send_time.tv_sec)*1000+(recv_time.tv_usec-send_time.tv_usec)/1000;
441 ier->DataSize=res-ip_header_len-ICMP_MINLEN;
443 ier->Data=endbuf-ier->DataSize;
444 memmove(ier->Data,((char*)ip_header)+ip_header_len+ICMP_MINLEN,ier->DataSize);
445 ier->Options.Ttl=ip_header->ip_ttl;
446 ier->Options.Tos=ip_header->ip_tos;
447 ier->Options.Flags=ip_header->ip_off >> 13;
448 ier->Options.OptionsSize=ip_header_len-sizeof(struct ip);
449 if (ier->Options.OptionsSize!=0) {
450 ier->Options.OptionsData=ier->Data-ier->Options.OptionsSize;
451 /* FIXME: We are supposed to rearrange the option's 'source route' data */
452 memmove(ier->Options.OptionsData,((char*)ip_header)+ip_header_len,ier->Options.OptionsSize);
453 endbuf=ier->Options.OptionsData;
455 ier->Options.OptionsData=NULL;
459 /* Prepare for the next packet */
461 ip_header=(struct ip*)(((char*)ip_header)+sizeof(ICMP_ECHO_REPLY));
462 maxlen=endbuf-(char*)ip_header;
464 /* Check out whether there is more but don't wait this time */
469 FD_SET(icp->sid,&fdr);
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. All advertising materials mentioning features or use of this software
494 * must display the following acknowledgement:
495 * This product includes software developed by the University of
496 * California, Berkeley and its contributors.
497 * 4. Neither the name of the University nor the names of its contributors
498 * may be used to endorse or promote products derived from this software
499 * without specific prior written permission.
501 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
502 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
503 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
504 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
505 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
506 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
507 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
508 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
509 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
510 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF