Commit | Line | Data |
---|---|---|
c906108c | 1 | /* Replay a remote debug session logfile for GDB. |
0fb0cc75 JB |
2 | Copyright (C) 1996, 1998, 1999, 2000, 2002, 2003, 2005, 2006, 2007, 2008, |
3 | 2009 Free Software Foundation, Inc. | |
c906108c SS |
4 | Written by Fred Fish (fnf@cygnus.com) from pieces of gdbserver. |
5 | ||
c5aa993b | 6 | This file is part of GDB. |
c906108c | 7 | |
c5aa993b JM |
8 | This program is free software; you can redistribute it and/or modify |
9 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 10 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b | 11 | (at your option) any later version. |
c906108c | 12 | |
c5aa993b JM |
13 | This program is distributed in the hope that it will be useful, |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
c906108c | 17 | |
c5aa993b | 18 | You should have received a copy of the GNU General Public License |
a9762ec7 | 19 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c | 20 | |
5c44784c | 21 | #include "config.h" |
c906108c | 22 | #include <stdio.h> |
68070c10 | 23 | #if HAVE_SYS_FILE_H |
c906108c | 24 | #include <sys/file.h> |
68070c10 PA |
25 | #endif |
26 | #if HAVE_SIGNAL_H | |
c906108c | 27 | #include <signal.h> |
68070c10 | 28 | #endif |
c906108c | 29 | #include <ctype.h> |
68070c10 | 30 | #if HAVE_FCNTL_H |
c906108c | 31 | #include <fcntl.h> |
68070c10 PA |
32 | #endif |
33 | #if HAVE_ERRNO_H | |
5c44784c | 34 | #include <errno.h> |
68070c10 | 35 | #endif |
82e0fd98 DB |
36 | #ifdef HAVE_STDLIB_H |
37 | #include <stdlib.h> | |
38 | #endif | |
0729219d DJ |
39 | #ifdef HAVE_STRING_H |
40 | #include <string.h> | |
41 | #endif | |
82e0fd98 DB |
42 | #ifdef HAVE_UNISTD_H |
43 | #include <unistd.h> | |
44 | #endif | |
b80864fb DJ |
45 | #ifdef HAVE_NETINET_IN_H |
46 | #include <netinet/in.h> | |
47 | #endif | |
48 | #ifdef HAVE_SYS_SOCKET_H | |
49 | #include <sys/socket.h> | |
50 | #endif | |
51 | #if HAVE_NETDB_H | |
52 | #include <netdb.h> | |
53 | #endif | |
54 | #if HAVE_NETINET_TCP_H | |
55 | #include <netinet/tcp.h> | |
56 | #endif | |
68070c10 PA |
57 | #if HAVE_MALLOC_H |
58 | #include <malloc.h> | |
59 | #endif | |
b80864fb DJ |
60 | |
61 | #if USE_WIN32API | |
62 | #include <winsock.h> | |
63 | #endif | |
c906108c | 64 | |
f450004a DJ |
65 | #ifndef HAVE_SOCKLEN_T |
66 | typedef int socklen_t; | |
67 | #endif | |
68 | ||
c906108c SS |
69 | /* Sort of a hack... */ |
70 | #define EOL (EOF - 1) | |
71 | ||
c16158bc JM |
72 | /* Version information, from version.c. */ |
73 | extern const char version[]; | |
74 | extern const char host_name[]; | |
75 | ||
c906108c SS |
76 | static int remote_desc; |
77 | ||
68070c10 PA |
78 | #ifdef __MINGW32CE__ |
79 | ||
80 | #ifndef COUNTOF | |
81 | #define COUNTOF(STR) (sizeof (STR) / sizeof ((STR)[0])) | |
82 | #endif | |
83 | ||
84 | #define errno (GetLastError ()) | |
85 | ||
86 | char * | |
87 | strerror (DWORD error) | |
88 | { | |
89 | static char buf[1024]; | |
90 | WCHAR *msgbuf; | |
91 | DWORD lasterr = GetLastError (); | |
92 | DWORD chars = FormatMessageW (FORMAT_MESSAGE_FROM_SYSTEM | |
93 | | FORMAT_MESSAGE_ALLOCATE_BUFFER, | |
94 | NULL, | |
95 | error, | |
96 | 0, /* Default language */ | |
97 | (LPVOID)&msgbuf, | |
98 | 0, | |
99 | NULL); | |
100 | if (chars != 0) | |
101 | { | |
102 | /* If there is an \r\n appended, zap it. */ | |
103 | if (chars >= 2 | |
104 | && msgbuf[chars - 2] == '\r' | |
105 | && msgbuf[chars - 1] == '\n') | |
106 | { | |
107 | chars -= 2; | |
108 | msgbuf[chars] = 0; | |
109 | } | |
110 | ||
111 | if (chars > ((COUNTOF (buf)) - 1)) | |
112 | { | |
113 | chars = COUNTOF (buf) - 1; | |
114 | msgbuf [chars] = 0; | |
115 | } | |
116 | ||
117 | wcstombs (buf, msgbuf, chars + 1); | |
118 | LocalFree (msgbuf); | |
119 | } | |
120 | else | |
121 | sprintf (buf, "unknown win32 error (%ld)", error); | |
122 | ||
123 | SetLastError (lasterr); | |
124 | return buf; | |
125 | } | |
126 | ||
127 | #endif /* __MINGW32CE__ */ | |
128 | ||
c906108c SS |
129 | /* Print the system error message for errno, and also mention STRING |
130 | as the file name for which the error was encountered. | |
131 | Then return to command level. */ | |
132 | ||
82e0fd98 | 133 | static void |
54363045 | 134 | perror_with_name (const char *string) |
c906108c | 135 | { |
5c44784c | 136 | #ifndef STDC_HEADERS |
c906108c | 137 | extern int errno; |
5c44784c JM |
138 | #endif |
139 | const char *err; | |
c906108c SS |
140 | char *combined; |
141 | ||
43d5792c DJ |
142 | err = strerror (errno); |
143 | if (err == NULL) | |
144 | err = "unknown error"; | |
145 | ||
c906108c SS |
146 | combined = (char *) alloca (strlen (err) + strlen (string) + 3); |
147 | strcpy (combined, string); | |
148 | strcat (combined, ": "); | |
149 | strcat (combined, err); | |
150 | fprintf (stderr, "\n%s.\n", combined); | |
151 | fflush (stderr); | |
152 | exit (1); | |
153 | } | |
154 | ||
155 | static void | |
fba45db2 | 156 | sync_error (FILE *fp, char *desc, int expect, int got) |
c906108c SS |
157 | { |
158 | fprintf (stderr, "\n%s\n", desc); | |
159 | fprintf (stderr, "At logfile offset %ld, expected '0x%x' got '0x%x'\n", | |
160 | ftell (fp), expect, got); | |
161 | fflush (stderr); | |
162 | exit (1); | |
163 | } | |
164 | ||
82e0fd98 | 165 | static void |
fba45db2 | 166 | remote_close (void) |
c906108c | 167 | { |
b80864fb DJ |
168 | #ifdef USE_WIN32API |
169 | closesocket (remote_desc); | |
170 | #else | |
c906108c | 171 | close (remote_desc); |
b80864fb | 172 | #endif |
c906108c SS |
173 | } |
174 | ||
175 | /* Open a connection to a remote debugger. | |
176 | NAME is the filename used for communication. */ | |
177 | ||
82e0fd98 | 178 | static void |
fba45db2 | 179 | remote_open (char *name) |
c906108c | 180 | { |
c906108c SS |
181 | if (!strchr (name, ':')) |
182 | { | |
183 | fprintf (stderr, "%s: Must specify tcp connection as host:addr\n", name); | |
184 | fflush (stderr); | |
185 | exit (1); | |
186 | } | |
187 | else | |
188 | { | |
b80864fb DJ |
189 | #ifdef USE_WIN32API |
190 | static int winsock_initialized; | |
191 | #endif | |
c906108c SS |
192 | char *port_str; |
193 | int port; | |
194 | struct sockaddr_in sockaddr; | |
f450004a | 195 | socklen_t tmp; |
c906108c SS |
196 | int tmp_desc; |
197 | ||
198 | port_str = strchr (name, ':'); | |
199 | ||
200 | port = atoi (port_str + 1); | |
201 | ||
b80864fb DJ |
202 | #ifdef USE_WIN32API |
203 | if (!winsock_initialized) | |
204 | { | |
205 | WSADATA wsad; | |
206 | ||
207 | WSAStartup (MAKEWORD (1, 0), &wsad); | |
208 | winsock_initialized = 1; | |
209 | } | |
210 | #endif | |
211 | ||
c906108c SS |
212 | tmp_desc = socket (PF_INET, SOCK_STREAM, 0); |
213 | if (tmp_desc < 0) | |
214 | perror_with_name ("Can't open socket"); | |
215 | ||
216 | /* Allow rapid reuse of this port. */ | |
217 | tmp = 1; | |
c5aa993b JM |
218 | setsockopt (tmp_desc, SOL_SOCKET, SO_REUSEADDR, (char *) &tmp, |
219 | sizeof (tmp)); | |
c906108c SS |
220 | |
221 | sockaddr.sin_family = PF_INET; | |
c5aa993b | 222 | sockaddr.sin_port = htons (port); |
c906108c SS |
223 | sockaddr.sin_addr.s_addr = INADDR_ANY; |
224 | ||
c5aa993b | 225 | if (bind (tmp_desc, (struct sockaddr *) &sockaddr, sizeof (sockaddr)) |
c906108c SS |
226 | || listen (tmp_desc, 1)) |
227 | perror_with_name ("Can't bind address"); | |
228 | ||
229 | tmp = sizeof (sockaddr); | |
c5aa993b | 230 | remote_desc = accept (tmp_desc, (struct sockaddr *) &sockaddr, &tmp); |
c906108c SS |
231 | if (remote_desc == -1) |
232 | perror_with_name ("Accept failed"); | |
233 | ||
c906108c SS |
234 | /* Enable TCP keep alive process. */ |
235 | tmp = 1; | |
c5aa993b | 236 | setsockopt (tmp_desc, SOL_SOCKET, SO_KEEPALIVE, (char *) &tmp, sizeof (tmp)); |
c906108c SS |
237 | |
238 | /* Tell TCP not to delay small packets. This greatly speeds up | |
1b3f6016 | 239 | interactive response. */ |
c906108c | 240 | tmp = 1; |
373fe97f | 241 | setsockopt (remote_desc, IPPROTO_TCP, TCP_NODELAY, |
c5aa993b | 242 | (char *) &tmp, sizeof (tmp)); |
c906108c | 243 | |
b80864fb DJ |
244 | #ifndef USE_WIN32API |
245 | close (tmp_desc); /* No longer need this */ | |
246 | ||
c5aa993b JM |
247 | signal (SIGPIPE, SIG_IGN); /* If we don't do this, then gdbreplay simply |
248 | exits when the remote side dies. */ | |
b80864fb DJ |
249 | #else |
250 | closesocket (tmp_desc); /* No longer need this */ | |
251 | #endif | |
c906108c SS |
252 | } |
253 | ||
b80864fb | 254 | #if defined(F_SETFL) && defined (FASYNC) |
c906108c | 255 | fcntl (remote_desc, F_SETFL, FASYNC); |
b80864fb | 256 | #endif |
c906108c SS |
257 | |
258 | fprintf (stderr, "Replay logfile using %s\n", name); | |
259 | fflush (stderr); | |
260 | } | |
261 | ||
c5aa993b | 262 | static int |
fba45db2 | 263 | tohex (int ch) |
c906108c SS |
264 | { |
265 | if (ch >= '0' && ch <= '9') | |
266 | { | |
267 | return (ch - '0'); | |
268 | } | |
269 | if (ch >= 'A' && ch <= 'F') | |
270 | { | |
271 | return (ch - 'A' + 10); | |
272 | } | |
273 | if (ch >= 'a' && ch <= 'f') | |
274 | { | |
275 | return (ch - 'a' + 10); | |
276 | } | |
277 | fprintf (stderr, "\nInvalid hex digit '%c'\n", ch); | |
278 | fflush (stderr); | |
279 | exit (1); | |
280 | } | |
281 | ||
282 | static int | |
fba45db2 | 283 | logchar (FILE *fp) |
c906108c SS |
284 | { |
285 | int ch; | |
286 | int ch2; | |
287 | ||
288 | ch = fgetc (fp); | |
289 | fputc (ch, stdout); | |
290 | fflush (stdout); | |
291 | switch (ch) | |
292 | { | |
293 | case '\n': | |
294 | ch = EOL; | |
295 | break; | |
296 | case '\\': | |
297 | ch = fgetc (fp); | |
298 | fputc (ch, stdout); | |
299 | fflush (stdout); | |
300 | switch (ch) | |
301 | { | |
c5aa993b JM |
302 | case '\\': |
303 | break; | |
304 | case 'b': | |
305 | ch = '\b'; | |
306 | break; | |
307 | case 'f': | |
308 | ch = '\f'; | |
309 | break; | |
310 | case 'n': | |
311 | ch = '\n'; | |
312 | break; | |
313 | case 'r': | |
314 | ch = '\r'; | |
315 | break; | |
316 | case 't': | |
317 | ch = '\t'; | |
318 | break; | |
319 | case 'v': | |
320 | ch = '\v'; | |
321 | break; | |
c906108c SS |
322 | case 'x': |
323 | ch2 = fgetc (fp); | |
324 | fputc (ch2, stdout); | |
325 | fflush (stdout); | |
326 | ch = tohex (ch2) << 4; | |
327 | ch2 = fgetc (fp); | |
328 | fputc (ch2, stdout); | |
329 | fflush (stdout); | |
330 | ch |= tohex (ch2); | |
331 | break; | |
332 | default: | |
333 | /* Treat any other char as just itself */ | |
334 | break; | |
335 | } | |
336 | default: | |
337 | break; | |
338 | } | |
339 | return (ch); | |
340 | } | |
341 | ||
342 | /* Accept input from gdb and match with chars from fp (after skipping one | |
343 | blank) up until a \n is read from fp (which is not matched) */ | |
344 | ||
82e0fd98 | 345 | static void |
fba45db2 | 346 | expect (FILE *fp) |
c906108c SS |
347 | { |
348 | int fromlog; | |
349 | unsigned char fromgdb; | |
350 | ||
351 | if ((fromlog = logchar (fp)) != ' ') | |
352 | { | |
353 | sync_error (fp, "Sync error during gdb read of leading blank", ' ', | |
354 | fromlog); | |
355 | } | |
356 | do | |
357 | { | |
358 | fromlog = logchar (fp); | |
359 | if (fromlog == EOL) | |
360 | { | |
361 | break; | |
362 | } | |
363 | read (remote_desc, &fromgdb, 1); | |
c5aa993b JM |
364 | } |
365 | while (fromlog == fromgdb); | |
c906108c SS |
366 | if (fromlog != EOL) |
367 | { | |
368 | sync_error (fp, "Sync error during read of gdb packet", fromlog, | |
369 | fromgdb); | |
370 | } | |
371 | } | |
372 | ||
373 | /* Play data back to gdb from fp (after skipping leading blank) up until a | |
374 | \n is read from fp (which is discarded and not sent to gdb). */ | |
375 | ||
82e0fd98 | 376 | static void |
fba45db2 | 377 | play (FILE *fp) |
c906108c SS |
378 | { |
379 | int fromlog; | |
380 | char ch; | |
381 | ||
382 | if ((fromlog = logchar (fp)) != ' ') | |
383 | { | |
384 | sync_error (fp, "Sync error skipping blank during write to gdb", ' ', | |
385 | fromlog); | |
386 | } | |
387 | while ((fromlog = logchar (fp)) != EOL) | |
388 | { | |
389 | ch = fromlog; | |
390 | write (remote_desc, &ch, 1); | |
391 | } | |
392 | } | |
393 | ||
c16158bc JM |
394 | static void |
395 | gdbreplay_version (void) | |
396 | { | |
397 | printf ("GNU gdbreplay %s%s\n" | |
ff703abe | 398 | "Copyright (C) 2009 Free Software Foundation, Inc.\n" |
90aa6a40 JM |
399 | "gdbreplay is free software, covered by the GNU General Public License.\n" |
400 | "This gdbreplay was configured as \"%s\"\n", | |
c16158bc JM |
401 | PKGVERSION, version, host_name); |
402 | } | |
403 | ||
404 | static void | |
405 | gdbreplay_usage (FILE *stream) | |
406 | { | |
407 | fprintf (stream, "Usage:\tgdbreplay <logfile> <host:port>\n"); | |
408 | if (REPORT_BUGS_TO[0] && stream == stdout) | |
409 | fprintf (stream, "Report bugs to \"%s\".\n", REPORT_BUGS_TO); | |
410 | } | |
411 | ||
c906108c | 412 | int |
da85418c | 413 | main (int argc, char *argv[]) |
c906108c SS |
414 | { |
415 | FILE *fp; | |
416 | int ch; | |
417 | ||
c16158bc JM |
418 | if (argc >= 2 && strcmp (argv[1], "--version") == 0) |
419 | { | |
420 | gdbreplay_version (); | |
421 | exit (0); | |
422 | } | |
423 | if (argc >= 2 && strcmp (argv[1], "--help") == 0) | |
424 | { | |
425 | gdbreplay_usage (stdout); | |
426 | exit (0); | |
427 | } | |
428 | ||
c906108c SS |
429 | if (argc < 3) |
430 | { | |
c16158bc | 431 | gdbreplay_usage (stderr); |
c906108c SS |
432 | exit (1); |
433 | } | |
434 | fp = fopen (argv[1], "r"); | |
435 | if (fp == NULL) | |
436 | { | |
437 | perror_with_name (argv[1]); | |
c5aa993b | 438 | } |
c906108c SS |
439 | remote_open (argv[2]); |
440 | while ((ch = logchar (fp)) != EOF) | |
441 | { | |
442 | switch (ch) | |
443 | { | |
444 | case 'w': | |
445 | /* data sent from gdb to gdbreplay, accept and match it */ | |
446 | expect (fp); | |
447 | break; | |
448 | case 'r': | |
449 | /* data sent from gdbreplay to gdb, play it */ | |
450 | play (fp); | |
451 | break; | |
452 | case 'c': | |
453 | /* Command executed by gdb */ | |
454 | while ((ch = logchar (fp)) != EOL); | |
455 | break; | |
456 | } | |
457 | } | |
458 | remote_close (); | |
459 | exit (0); | |
460 | } |