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616915dd | 1 | /* |
11db3170 | 2 | ** Splint - annotation-assisted static program checker |
c59f5181 | 3 | ** Copyright (C) 1994-2003 University of Virginia, |
616915dd | 4 | ** Massachusetts Institute of Technology |
5 | ** | |
6 | ** This program is free software; you can redistribute it and/or modify it | |
7 | ** under the terms of the GNU General Public License as published by the | |
8 | ** Free Software Foundation; either version 2 of the License, or (at your | |
9 | ** option) any later version. | |
10 | ** | |
11 | ** This program is distributed in the hope that it will be useful, but | |
12 | ** WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | ** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
14 | ** General Public License for more details. | |
15 | ** | |
16 | ** The GNU General Public License is available from http://www.gnu.org/ or | |
17 | ** the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, | |
18 | ** MA 02111-1307, USA. | |
19 | ** | |
155af98d | 20 | ** For information on splint: info@splint.org |
21 | ** To report a bug: splint-bug@splint.org | |
11db3170 | 22 | ** For more information: http://www.splint.org |
616915dd | 23 | */ |
24 | /* | |
25 | ** osd.c | |
26 | ** | |
27 | ** Provide a system-independent interface to system-dependent | |
28 | ** file operations. | |
29 | */ | |
30 | ||
31 | /* | |
32 | * Modified by Herbert 04/19/97: | |
33 | * - added conditional 'OS2' to conditional 'MSDOS' | |
34 | * - added include of new header portab.h. | |
35 | * - changed '/' to macro. | |
36 | * - added DOS / OS/2 specific stuff in osd_getPath. | |
37 | * Herbert 06/12/2000: | |
38 | * - added OS/2 specific includes before osd_getPid() | |
39 | * - handle files like in WIN32 for OS/2 in osd_fileExists() | |
7ac543fa | 40 | * Herbert 02/17/2002: |
41 | * - added OS/2 support to absolute file names | |
616915dd | 42 | */ |
43 | ||
44 | /*@-allmacros*/ | |
45 | /*@ignore@*/ | |
46 | # include <sys/types.h> | |
47 | # include <sys/stat.h> | |
48 | /* Fix suggested by Lars Rasmussen */ | |
49 | # include <errno.h> | |
b7e84605 | 50 | |
51 | /* POSIX platforms should defined getpid in unistd.h */ | |
52 | # if defined (WIN32) || (defined(OS2) && defined(__IBMC__)) | |
53 | # include <process.h> | |
7ac543fa | 54 | # include <direct.h> |
55 | # define getcwd _getcwd | |
b7e84605 | 56 | # else |
57 | # include <unistd.h> | |
58 | # endif | |
59 | ||
616915dd | 60 | /*@end@*/ |
61 | /*@=allmacros*/ | |
1b8ae690 | 62 | # include "splintMacros.nf" |
616915dd | 63 | # include "basic.h" |
64 | # include "osd.h" | |
616915dd | 65 | |
66 | /* from stat.h */ | |
67 | /*@ignore@*/ | |
68 | extern int stat (const char *, /*@out@*/ struct stat *); | |
69 | /*@end@*/ | |
70 | ||
71 | static bool osd_executableFileExists (char *); | |
72 | ||
73 | static bool nextdir (char **p_current_dir, /*@out@*/ char **p_dir, | |
74 | /*@out@*/ size_t *p_len); | |
75 | ||
28bf4b0b | 76 | extern cstring LSLRootName (cstring filespec) |
616915dd | 77 | { |
28bf4b0b | 78 | /*@access cstring@*/ |
616915dd | 79 | char *result, *startName, *tail; |
80 | size_t nameLength; | |
81 | ||
28bf4b0b | 82 | llassert (cstring_isDefined (filespec)); |
616915dd | 83 | tail = strrchr (filespec, CONNECTCHAR); |
84 | startName = (tail == NULL ? filespec : &tail[1]); | |
85 | tail = strrchr (startName, '.'); | |
86 | nameLength = (tail == NULL ? strlen (startName) | |
87 | : size_fromInt (tail - startName)); | |
88 | result = dmalloc (nameLength + 1); | |
89 | strncpy (result, startName, nameLength); | |
90 | result[(int) nameLength] = '\0'; | |
91 | return result; | |
28bf4b0b | 92 | /*@noaccess cstring@*/ |
616915dd | 93 | } |
94 | ||
28bf4b0b | 95 | extern /*@observer@*/ cstring |
96 | osd_getEnvironment (cstring env, /*@returned@*/ cstring def) | |
616915dd | 97 | { |
28bf4b0b | 98 | /*@access cstring@*/ |
616915dd | 99 | char *ret = osd_getEnvironmentVariable (env); |
100 | ||
101 | if (ret == NULL) | |
102 | { | |
103 | return def; | |
104 | } | |
105 | else | |
106 | { | |
107 | return ret; | |
108 | } | |
28bf4b0b | 109 | /*@noaccess cstring@*/ |
616915dd | 110 | } |
111 | ||
112 | ||
113 | /* | |
114 | **++ | |
115 | ** FUNCTIONAL DESCRIPTION: | |
116 | ** | |
117 | ** This function attempts to locate a file in a search list. On VMS, it | |
118 | ** just concatinates the path and file names, and then lets RMS do the | |
119 | ** searching. On Ultrix, it searches for the file on the path. | |
120 | ** | |
121 | ** FORMAL PARAMETERS: | |
122 | ** | |
123 | ** path: search path where to look for the file. | |
124 | ** file: name of file to search for. | |
125 | ** returnPath: if a file is found, this is where the concatenated | |
126 | ** directory and file name are returned. | |
127 | ** | |
128 | ** RETURN VALUE: | |
129 | ** | |
130 | ** OSD_FILEFOUND: the file was found on the search list. | |
131 | ** OSD_FILENOTFOUND the file was not found. | |
132 | ** OSD_PATHTOOLONG the concatenated directory and file name are too | |
133 | ** long. | |
134 | ** | |
135 | ** SIDE EFFECTS: | |
136 | ** | |
137 | ** None | |
138 | ** | |
139 | ** PRECONDITIONS: | |
140 | ** | |
141 | ** Requires that parameters, path and file, are valid C strings. | |
142 | ** | |
143 | ** | |
144 | **-- | |
145 | */ | |
146 | ||
28bf4b0b | 147 | extern /*@observer@*/ cstring osd_getHomeDir () |
616915dd | 148 | { |
149 | /* Would something different be better for windows? */ | |
28bf4b0b | 150 | return (osd_getEnvironmentVariable (cstring_makeLiteralTemp ("HOME"))); |
616915dd | 151 | } |
152 | ||
28bf4b0b | 153 | filestatus osd_findOnLarchPath (cstring file, cstring *returnPath) |
616915dd | 154 | { |
28bf4b0b | 155 | return (osd_getPath (context_getLarchPath (), file, returnPath)); |
616915dd | 156 | } |
157 | ||
158 | extern filestatus | |
28bf4b0b | 159 | osd_getPath (cstring path, cstring file, cstring *returnPath) |
616915dd | 160 | { |
161 | char *fullPath; | |
162 | char *dirPtr; | |
163 | size_t dirLen; | |
164 | char aPath[MAXPATHLEN]; | |
165 | filestatus rVal = OSD_FILENOTFOUND; /* assume file not found. */ | |
28bf4b0b | 166 | |
167 | /*@access cstring@*/ | |
168 | ||
616915dd | 169 | fullPath = path; |
28bf4b0b | 170 | llassert (cstring_isDefined (file)); |
171 | ||
3e3ec469 | 172 | /* 2002-01-01: make sure returnPath gets defined even when there are errors. |
173 | ** (fixed splint checking detected this) | |
174 | */ | |
175 | ||
176 | *returnPath = cstring_undefined; | |
177 | ||
28bf4b0b | 178 | if (fullPath == NULL |
179 | || | |
616915dd | 180 | # if defined(OS2) || defined(MSDOS) || defined(WIN32) |
28bf4b0b | 181 | /* under OS/2 and MSDOS the includePath may be empty, if so, search |
182 | * the current directory. */ | |
183 | *fullPath == '\0' || | |
184 | (*file == CONNECTCHAR || (file[0] != '\0' && file[1] == ':')) | |
616915dd | 185 | # else |
517a2db3 | 186 | (*file == CONNECTCHAR) |
616915dd | 187 | # endif |
28bf4b0b | 188 | ) |
616915dd | 189 | { |
28bf4b0b | 190 | /* No path specified. Look for it in the current directory. */ |
191 | ||
616915dd | 192 | strcpy (&aPath[0], file); |
28bf4b0b | 193 | |
616915dd | 194 | if (osd_fileExists (&aPath[0])) |
195 | { | |
196 | rVal = OSD_FILEFOUND; | |
197 | *returnPath = dmalloc (strlen (&aPath[0]) + 1); | |
198 | strcpy (*returnPath, &aPath[0]); | |
199 | } | |
200 | } | |
201 | else | |
202 | { | |
28bf4b0b | 203 | /* Path specified. Loop through directories in path looking for the */ |
204 | /* first occurrence of the file. */ | |
205 | ||
517a2db3 | 206 | while (nextdir (&fullPath, &dirPtr, &dirLen) |
207 | && rVal == OSD_FILENOTFOUND) | |
616915dd | 208 | { |
209 | if ((dirLen + strlen (file) + 2) <= MAXPATHLEN) | |
210 | { | |
28bf4b0b | 211 | /* Cat directory and filename, and see if file exists. */ |
616915dd | 212 | strncpy (&aPath[0], dirPtr, dirLen); |
213 | strcpy (&aPath[0] + dirLen, ""); /* Null terminate aPath. */ | |
214 | strcat (&aPath[0], CONNECTSTR); | |
215 | strcat (&aPath[0], file); | |
28bf4b0b | 216 | |
616915dd | 217 | if (osd_fileExists (&aPath[0])) |
218 | { | |
219 | rVal = OSD_FILEFOUND; | |
220 | *returnPath = (char *) dmalloc (strlen (&aPath[0]) + 1); | |
221 | strcpy (*returnPath, &aPath[0]); | |
222 | } | |
223 | } | |
224 | else | |
225 | { | |
226 | rVal = OSD_PATHTOOLONG; | |
227 | } | |
228 | } | |
229 | } | |
3e3ec469 | 230 | |
616915dd | 231 | return rVal; |
28bf4b0b | 232 | /*@noaccess cstring@*/ |
616915dd | 233 | } |
234 | ||
235 | extern filestatus | |
28bf4b0b | 236 | osd_getExePath (cstring path, cstring file, cstring *returnPath) |
616915dd | 237 | { |
238 | char *fullPath; | |
239 | char *dirPtr; | |
240 | size_t dirLen; | |
241 | char aPath[MAXPATHLEN]; | |
242 | filestatus rVal = OSD_FILENOTFOUND; /* assume file not found. */ | |
28bf4b0b | 243 | /*@access cstring@*/ |
3e3ec469 | 244 | |
245 | *returnPath = cstring_undefined; | |
616915dd | 246 | fullPath = osd_getEnvironmentVariable (path); |
28bf4b0b | 247 | |
616915dd | 248 | if (fullPath == NULL) |
249 | { | |
28bf4b0b | 250 | /* No path specified. Look for it in the current directory. */ |
251 | llassert (cstring_isDefined (file)); | |
616915dd | 252 | strcpy (&aPath[0], file); |
28bf4b0b | 253 | |
616915dd | 254 | if (osd_fileExists (&aPath[0])) |
255 | { | |
256 | rVal = OSD_FILEFOUND; | |
257 | *returnPath = dmalloc (strlen (&aPath[0]) + 1); | |
258 | strcpy (*returnPath, &aPath[0]); | |
259 | } | |
260 | } | |
261 | else | |
262 | { | |
263 | /* | |
264 | ** Path specified. Loop through directories in path looking | |
265 | ** for the first occurrence of the file. | |
266 | */ | |
267 | ||
268 | while (nextdir (&fullPath, &dirPtr, &dirLen) && | |
269 | rVal == OSD_FILENOTFOUND) | |
270 | { | |
28bf4b0b | 271 | llassert (cstring_isDefined (file)); |
272 | ||
273 | if ((dirLen + cstring_length (file) + 2) <= MAXPATHLEN) | |
616915dd | 274 | { |
275 | /* Cat directory and filename, and see if file exists. */ | |
276 | strncpy (&aPath[0], dirPtr, dirLen); | |
277 | strcpy (&aPath[0] + dirLen, ""); /* Null terminate aPath. */ | |
278 | strcat (&aPath[0], CONNECTSTR); | |
279 | strcat (&aPath[0], file); | |
280 | ||
281 | if (osd_executableFileExists (&aPath[0])) | |
282 | { | |
283 | rVal = OSD_FILEFOUND; | |
284 | *returnPath = dmalloc (strlen (&aPath[0]) + 1); | |
285 | strcpy (*returnPath, &aPath[0]); | |
286 | } | |
287 | } | |
288 | else | |
289 | { | |
290 | rVal = OSD_PATHTOOLONG; | |
291 | } | |
292 | } | |
293 | } | |
294 | ||
295 | return rVal; | |
28bf4b0b | 296 | /*@noaccess cstring@*/ |
616915dd | 297 | } |
298 | ||
299 | bool | |
28bf4b0b | 300 | osd_fileExists (cstring filespec) |
616915dd | 301 | { |
302 | # ifdef UNIX | |
303 | struct stat buf; | |
210066f9 | 304 | /*@i3@*/ return (stat (cstring_toCharsSafe (filespec), &buf) == 0); /* spurious */ |
616915dd | 305 | # else |
306 | # if defined (WIN32) || defined (OS2) | |
d5047b91 | 307 | FILE *test = fileTable_openReadFile (context_fileTable (), filespec); |
28bf4b0b | 308 | |
616915dd | 309 | if (test != NULL) |
28bf4b0b | 310 | { |
dfd82dce | 311 | (void) fileTable_closeFile (context_fileTable (),test); |
28bf4b0b | 312 | return TRUE; |
313 | } | |
616915dd | 314 | else |
28bf4b0b | 315 | { |
316 | return FALSE; | |
317 | } | |
616915dd | 318 | # else |
319 | return FALSE; | |
320 | # endif | |
321 | # endif | |
322 | } | |
323 | ||
4dd72714 | 324 | # if defined(__IBMC__) && defined(OS2) |
325 | # define S_IFMT (unsigned short)0xFFFF | |
326 | # endif | |
327 | ||
328 | /* | |
329 | ** Works form Win32 at least... | |
330 | */ | |
331 | ||
332 | # ifndef S_IXUSR | |
333 | /*@-macrounrecog@*/ | |
334 | # define S_IXUSR _S_IEXEC | |
335 | /*@=macrounrecog@*/ | |
336 | # endif | |
337 | ||
616915dd | 338 | bool |
339 | osd_executableFileExists (/*@unused@*/ char *filespec) | |
340 | { | |
a9ec3280 | 341 | /*@-compdestroy@*/ /* possible memory leaks here? */ |
616915dd | 342 | # ifdef UNIX |
4dd72714 | 343 | struct stat buf; |
616915dd | 344 | if (stat (filespec, &buf) == 0) |
345 | { | |
346 | /* mask by file type */ | |
a9ec3280 | 347 | /*@-type@*/ /* confusion about __mode_t and mode_t types */ |
348 | if ((buf.st_mode & S_IFMT) != S_IFDIR) /* not a directory */ | |
349 | /*@=type@*/ | |
616915dd | 350 | { |
351 | /* as long as it is an executable file */ | |
352 | # if defined(__IBMC__) && defined(OS2) | |
4dd72714 | 353 | int com_or_exe_pos = strlen( filespec) - 4; |
354 | return stricmp( &filespec[com_or_exe_pos], ".exe") == 0 | |
355 | || stricmp( &filespec[com_or_exe_pos], ".com") == 0 | |
356 | || stricmp( &filespec[com_or_exe_pos], ".bat") == 0 | |
357 | || stricmp( &filespec[com_or_exe_pos], ".cmd") == 0; | |
616915dd | 358 | # else |
359 | return (((buf.st_mode & S_IXUSR) | |
4dd72714 | 360 | # if defined (S_IXGRP) && defined (S_IXOTH) |
616915dd | 361 | | (buf.st_mode & S_IXGRP) | |
362 | (buf.st_mode & S_IXOTH) | |
363 | # endif | |
a9ec3280 | 364 | ) != 0); /* spurious */ |
616915dd | 365 | # endif |
366 | } | |
367 | } | |
616915dd | 368 | # endif |
a9ec3280 | 369 | return (FALSE); |
370 | /*@=compdestroy@*/ | |
616915dd | 371 | } |
372 | ||
373 | /* | |
374 | **++ | |
375 | ** FUNCTIONAL DESCRIPTION: | |
376 | ** | |
377 | ** Find the next directory from a directory path. | |
378 | ** | |
379 | ** FORMAL PARAMETERS: | |
380 | ** | |
381 | ** char ** current_dir : | |
382 | ** Points to the current position in the path string. The first time | |
383 | ** you call this routine, this should point to the first character of | |
384 | ** the path. On return, this will be updated to point to the | |
385 | ** terminating \0 or : of the first directory found. You can then pass | |
386 | ** it unchanged for subsequent calls; this routine will correctly skip | |
387 | ** over the :. | |
388 | ** | |
389 | ** char ** dir : | |
390 | ** On exit, this will point to the first character of the directory | |
391 | ** that was found. This will be a pointer directly into the client's | |
392 | ** path string. | |
393 | ** | |
394 | ** unsigned int * len : | |
395 | ** On exit, this will contain the length of the directory that was | |
396 | ** found, not counting any terminating \0 or :. If no directory was | |
397 | ** found, this will be 0. | |
398 | ** | |
399 | ** RETURN VALUE: | |
400 | ** TRUE if we found another directory. | |
401 | ** FALSE otherwise. | |
402 | ** | |
403 | ** DESIGN: | |
404 | ** | |
405 | ** We return a pointer and length, rather than a string, because of a) | |
406 | ** historical reasons; and b) this avoids having to allocate storage. | |
407 | ** | |
408 | ** | |
409 | ** | |
410 | **-- | |
411 | */ | |
412 | ||
413 | static bool | |
414 | nextdir (d_char *current_dir, d_char *dir, size_t *len) | |
415 | { | |
416 | char *tchar; | |
417 | ||
418 | if (**current_dir == '\0') | |
419 | { | |
420 | *len = 0; | |
3e3ec469 | 421 | *dir = NULL; |
616915dd | 422 | return FALSE; |
423 | } | |
424 | ||
7272a1c1 | 425 | *dir = (**current_dir == PATH_SEPARATOR ? *current_dir + 1 : *current_dir); |
616915dd | 426 | |
427 | /* Find next ':' or end of string */ | |
7272a1c1 | 428 | for (tchar = *dir; *tchar != '\0' && *tchar != PATH_SEPARATOR; tchar++) |
616915dd | 429 | { |
430 | ; | |
431 | } | |
432 | ||
433 | *current_dir = tchar; | |
434 | *len = size_fromInt (tchar - *dir); | |
435 | return TRUE; | |
436 | } | |
437 | ||
28bf4b0b | 438 | /*@observer@*/ /*@null@*/ cstring osd_getEnvironmentVariable (cstring var) |
616915dd | 439 | { |
1d239d69 | 440 | /* evans - 2001-08-26 fixed OS instead of OS2 bug, reported by Alexander Mai */ |
441 | # if defined(UNIX) || defined(OS2) || defined(MSDOS) || defined(WIN32) | |
28bf4b0b | 442 | char *val = getenv (cstring_toCharsSafe (var)); |
443 | ||
444 | if (val == NULL) | |
445 | { | |
446 | return cstring_undefined; | |
447 | } | |
448 | else | |
449 | { | |
450 | return cstring_makeLiteralTemp (val); | |
451 | } | |
616915dd | 452 | # else |
28bf4b0b | 453 | return cstring_undefined; |
616915dd | 454 | # endif |
455 | } | |
456 | ||
6ee276d2 | 457 | # if defined (WIN32) || defined (OS2) && defined (__IBMC__) |
616915dd | 458 | extern /*@external@*/ int _flushall (void) /*@modifies fileSystem@*/ ; |
459 | # endif | |
460 | ||
461 | # ifndef system | |
462 | extern /*@external@*/ int system (const char *) /*@modifies fileSystem@*/ ; | |
463 | # endif | |
28bf4b0b | 464 | int osd_system (cstring cmd) |
616915dd | 465 | { |
466 | int res; | |
467 | /* system ("printenv"); */ | |
6ee276d2 | 468 | # if defined (WIN32) || defined (OS2) && defined (__IBMC__) |
616915dd | 469 | (void) _flushall (); |
470 | # endif | |
471 | ||
28bf4b0b | 472 | res = system (cstring_toCharsSafe (cmd)); |
616915dd | 473 | return res; |
474 | } | |
616915dd | 475 | |
476 | # ifndef unlink | |
b7e84605 | 477 | /* This should be defined by unistd.h */ |
616915dd | 478 | /*@-redecl@*/ |
479 | extern /*@external@*/ int unlink (const char *) /*@modifies fileSystem@*/ ; | |
480 | /*@=redecl@*/ | |
481 | # endif | |
482 | ||
0bd4c301 | 483 | static bool s_tempError = FALSE; |
4dd72714 | 484 | |
485 | void osd_setTempError (void) | |
486 | { | |
487 | s_tempError = TRUE; | |
488 | } | |
489 | ||
28bf4b0b | 490 | int osd_unlink (cstring fname) |
616915dd | 491 | { |
492 | int res; | |
493 | ||
28bf4b0b | 494 | res = unlink (cstring_toCharsSafe (fname)); |
616915dd | 495 | |
496 | if (res != 0) | |
497 | { | |
4dd72714 | 498 | if (!s_tempError) |
499 | { | |
500 | llcontbug (message ("Cannot remove temporary file: %s (%s)", | |
501 | fname, | |
502 | cstring_fromChars (strerror (errno)))); | |
503 | } | |
616915dd | 504 | } |
505 | ||
506 | return res; | |
507 | } | |
508 | ||
616915dd | 509 | # if defined (WIN32) || defined (OS2) && defined (__IBMC__) |
510 | int | |
511 | # else | |
512 | int /* pid_t */ | |
513 | # endif | |
514 | osd_getPid () | |
515 | { | |
516 | # if defined (WIN32) || defined (OS2) && defined (__IBMC__) | |
517 | int pid = _getpid (); | |
518 | # else | |
b8dce3c7 | 519 | __pid_t pid = getpid (); |
616915dd | 520 | # endif |
521 | ||
522 | return (int) pid; | |
523 | } | |
524 | ||
28bf4b0b | 525 | cstring osd_fixDefine (cstring x) |
616915dd | 526 | { |
28bf4b0b | 527 | /*@access cstring@*/ |
528 | llassert (cstring_isDefined (x)); | |
616915dd | 529 | # ifdef UNIX |
530 | if (strchr (x, '\'') != NULL) { | |
531 | /* | |
532 | ** If there is a single quote, check for <ident>='<string>' and | |
533 | ** produce <ident>=<string> | |
534 | */ | |
535 | ||
536 | char *eqs = strchr (x, '='); | |
537 | ||
538 | if (eqs != NULL) { | |
539 | if (eqs[1] == '\'') { | |
540 | char *endqu = strrchr (x, '\''); | |
541 | ||
542 | if (endqu != NULL) { | |
543 | if (*(endqu - 1) != '\\') { | |
544 | if (*(endqu + 1) == '\0') { | |
545 | cstring res; | |
546 | cstring def; | |
547 | ||
548 | *endqu = '\0'; | |
549 | def = cstring_fromChars (eqs + 2); | |
550 | eqs[1] = '\0'; | |
551 | res = cstring_concat (cstring_fromChars (x), def); | |
552 | return res; | |
553 | } | |
554 | } | |
555 | } | |
556 | } | |
557 | } | |
558 | } | |
559 | ||
560 | # endif | |
561 | ||
28bf4b0b | 562 | return cstring_copy (x); |
563 | /*@noaccess cstring@*/ | |
616915dd | 564 | } |
565 | ||
28bf4b0b | 566 | bool osd_fileIsReadable (cstring f) |
616915dd | 567 | { |
d5047b91 | 568 | FILE *fl = fileTable_openReadFile (context_fileTable (), f); |
616915dd | 569 | |
dfd82dce | 570 | if (fl != NULL) |
616915dd | 571 | { |
dfd82dce | 572 | check (fileTable_closeFile (context_fileTable (), fl)); |
616915dd | 573 | return (TRUE); |
574 | } | |
575 | else | |
576 | { | |
577 | return (FALSE); | |
578 | } | |
579 | } | |
580 | ||
581 | bool osd_isConnectChar (char c) | |
582 | { | |
583 | if (c == CONNECTCHAR) | |
584 | { | |
585 | return TRUE; | |
586 | } | |
587 | ||
588 | # ifdef HASALTCONNECTCHAR | |
589 | if (c == ALTCONNECTCHAR) | |
590 | { | |
591 | return TRUE; | |
592 | } | |
593 | # endif | |
594 | ||
595 | return FALSE; | |
596 | } | |
597 | ||
68de3f33 | 598 | /* |
599 | ** Returns true if c2 starts with the same path as c1 | |
600 | ** | |
601 | ** This is called by context_isSystemDir to determine if a | |
602 | ** directory is on the system path. | |
603 | ** | |
604 | ** In unix, this is just a string comparison. For Win32 and OS2, we need a more | |
605 | ** complex comparison. | |
606 | */ | |
607 | ||
608 | bool osd_equalCanonicalPrefix (cstring dirpath, cstring prefixpath) | |
609 | { | |
610 | llassert (cstring_isDefined (prefixpath)); | |
611 | ||
612 | if (cstring_isEmpty (dirpath)) | |
613 | { | |
614 | return (cstring_isEmpty (prefixpath)); | |
615 | } | |
616 | ||
617 | # if defined (WIN32) || defined (OS2) | |
618 | ||
619 | /*@access cstring@*/ /* Moved this from cstring - should abstract it... */ | |
620 | ||
621 | /* | |
622 | ** If one has a drive specification, but the other doesn't, skip it. | |
623 | */ | |
624 | ||
625 | if (strchr (dirpath, ':') == NULL | |
626 | && strchr (prefixpath, ':') != NULL) | |
627 | { | |
628 | prefixpath = strchr (prefixpath, ':') + 1; | |
629 | } | |
630 | else | |
631 | { | |
632 | if (strchr (prefixpath, ':') == NULL | |
633 | && strchr (dirpath, ':') != NULL) | |
634 | { | |
635 | dirpath = strchr (dirpath, ':') + 1; | |
636 | } | |
637 | } | |
638 | ||
639 | { | |
640 | int len = size_toInt (strlen (prefixpath)); | |
641 | int i = 0; | |
642 | int slen = 0; | |
643 | ||
644 | for (i = 0, slen = 0; i < len; i++, slen++) | |
645 | { | |
646 | /* Allow any number of connect characters in any combination: | |
647 | * c:/usr//src\/foo == c:\\usr/src\/foo | |
648 | * After this we'll be at the last of such a sequence */ | |
649 | ||
650 | if (osd_isConnectChar (dirpath[slen]) && osd_isConnectChar (prefixpath[i])) | |
651 | { | |
652 | /* Skip one or more connect chars */ | |
653 | ||
654 | for (; osd_isConnectChar (dirpath[slen+1]); ++slen) | |
655 | { | |
656 | ; | |
657 | } | |
658 | ||
659 | for (; osd_isConnectChar (prefixpath[i+1]); ++i) | |
660 | { | |
661 | ; | |
662 | } | |
663 | } | |
664 | /* Windows, MSDOS and OS/2 use case-insensitive path specs! */ | |
665 | else if (toupper (dirpath[slen]) != toupper (prefixpath[i])) | |
666 | { | |
667 | return FALSE; | |
668 | } | |
669 | ||
670 | } | |
671 | } | |
672 | ||
673 | /*@noaccess cstring@*/ | |
674 | ||
675 | return TRUE; | |
676 | # else | |
677 | return (cstring_equalPrefix (dirpath, prefixpath)); | |
678 | # endif | |
679 | } | |
680 | ||
107b60d6 | 681 | # if 0 |
682 | /* | |
683 | ** This code provided by Herbert Martin Dietze, to canonicalize path names. | |
684 | */ | |
685 | ||
686 | char *osd_getcwd (/*@returned@*/ char *str, size_t size) | |
687 | { | |
688 | return getcwd (str, size); | |
689 | } | |
690 | ||
691 | /*@null@*/ /*@observer@*/ char * | |
692 | osd_dirNext (char *str) | |
693 | { | |
694 | char *p1 = strchr (str, '/'); | |
695 | char *p2 = strchr (str, '\\'); | |
696 | ||
697 | if (p1 == NULL) | |
698 | { | |
699 | if (p2 != NULL) | |
700 | { | |
701 | return p2 + 1; | |
702 | } | |
703 | else | |
704 | { | |
705 | return NULL; | |
706 | } | |
707 | } | |
708 | else if (p2 == NULL) | |
709 | { | |
710 | return p1 + 1; | |
711 | } | |
712 | else /* both not null */ | |
713 | { | |
714 | return (p1 < p2 ? p1 : p2) + 1; | |
715 | } | |
716 | } | |
717 | ||
718 | static void | |
719 | osd_dirShift (char *str, size_t num) /*@modifies str@*/ | |
720 | { | |
721 | int i; | |
722 | ||
723 | assert (num <= strlen (str)); | |
724 | ||
725 | for (i = 0; str[i] != '\0'; i++) | |
726 | { | |
727 | str[i] = str[i + num]; | |
728 | } | |
729 | } | |
730 | ||
731 | bool | |
732 | osd_dirDotdot (char *str) | |
733 | { | |
734 | return str[0] == '.' && str[1] == '.' && osd_isConnectChar (str[2]); | |
735 | } | |
736 | ||
737 | void | |
738 | osd_dirNormalize (char *str) | |
739 | { | |
740 | char *pos1, *pos2; | |
741 | ||
742 | for (; osd_isConnectChar (str[0]); str++) | |
743 | { | |
744 | } | |
745 | ||
746 | for (; str != NULL && osd_dirDotdot (str); str = osd_dirNext (str)) | |
747 | { | |
748 | } | |
749 | ||
750 | for (pos1 = pos2 = str; | |
751 | pos1 != NULL; | |
752 | pos2 = pos1, pos1 = osd_dirNext (pos1)) | |
753 | { | |
754 | /* remove redundant `./' entry */ | |
755 | while (pos1[0] == '.' && osd_isConnectChar (pos1[1])) | |
756 | { | |
757 | osd_dirShift (pos1, 2); | |
758 | } | |
759 | ||
760 | /* remove redundant `foo/../' entry */ | |
761 | if (osd_dirDotdot (pos1) && pos2 < pos1) | |
762 | { | |
763 | osd_dirShift (pos2, pos1 - pos2 + 1); | |
764 | osd_dirNormalize (str); | |
765 | } | |
766 | } | |
767 | } | |
768 | ||
769 | /*@null@*/ char * | |
770 | osd_dirAbsolute (char *str) | |
771 | { | |
772 | char *ret = NULL; | |
773 | size_t size = PATH_MAX * sizeof (*ret); | |
774 | ||
4dd72714 | 775 | DPRINTF (("Absolute for: %s", str)); |
776 | ||
7ac543fa | 777 | # if defined (WIN32) || defined (OS2) || defined (MSDOS) |
4dd72714 | 778 | if (strlen (str) > 1 && str[1] == ':') |
779 | { | |
780 | /* | |
781 | ** Its a drive letter | |
782 | */ | |
783 | ||
784 | ret = dmalloc ((strlen (str) + 1) * sizeof (*ret)); | |
785 | strcpy (ret, str); | |
786 | } | |
787 | else | |
788 | # endif | |
107b60d6 | 789 | if (osd_isConnectChar (str[0])) |
790 | { | |
791 | ret = dmalloc ((strlen (str) + 1) * sizeof (*ret)); | |
792 | strcpy (ret, str); | |
793 | } | |
794 | else | |
795 | { | |
796 | ret = dmalloc (size); | |
797 | ||
798 | ret = osd_getcwd (ret, size); | |
799 | ret = realloc (ret, (strlen (str) + strlen (ret) + 2) * sizeof (*ret)); | |
800 | ||
801 | if (ret == NULL) | |
802 | { | |
803 | return NULL; | |
804 | } | |
805 | ||
806 | strcat (ret, CONNECTSTR); | |
807 | strcat (ret, str); | |
808 | } | |
809 | ||
810 | osd_dirNormalize (ret); | |
811 | return ret; | |
812 | } | |
813 | ||
814 | # endif | |
53a89507 | 815 | |
816 | /* | |
817 | ** absolute paths | |
818 | ** | |
819 | ** This code is adapted from: | |
820 | ** | |
821 | ** http://src.openresources.com/debian/src/devel/HTML/S/altgcc_2.7.2.2.orig%20altgcc-2.7.2.2.orig%20protoize.c.html#1297 | |
822 | ** | |
823 | ** | |
824 | ** Protoize program - Original version by Ron Guilmette (rfg@segfault.us.com). | |
825 | ** Copyright (C) 1989, 1992, 1993, 1994, 1995 Free Software Foundation, Inc. | |
826 | ** | |
827 | ** This file is part of GNU CC. | |
828 | ** | |
829 | ** GNU CC is free software; you can redistribute it and/or modify | |
830 | ** it under the terms of the GNU General Public License as published by | |
831 | ** the Free Software Foundation; either version 2, or (at your option) | |
832 | ** any later version. | |
833 | ** | |
834 | ** GNU CC is distributed in the hope that it will be useful, | |
835 | ** but WITHOUT ANY WARRANTY; without even the implied warranty of | |
836 | ** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
837 | ** GNU General Public License for more details. | |
838 | ** | |
839 | ** You should have received a copy of the GNU General Public License | |
840 | ** along with GNU CC; see the file COPYING. If not, write to | |
841 | ** the Free Software Foundation, 59 Temple Place - Suite 330, | |
842 | ** Boston, MA 02111-1307, USA. | |
843 | */ | |
844 | ||
845 | /* | |
846 | ** Return the absolutized filename for the given relative | |
847 | ** filename. Note that if that filename is already absolute, it may | |
848 | ** still be returned in a modified form because this routine also | |
849 | ** eliminates redundant slashes and single dots and eliminates double | |
850 | ** dots to get a shortest possible filename from the given input | |
851 | ** filename. The absolutization of relative filenames is made by | |
852 | ** assuming that the given filename is to be taken as relative to | |
853 | ** the first argument (cwd) or to the current directory if cwd is | |
854 | ** NULL. | |
855 | */ | |
856 | ||
857 | /* A pointer to the current directory filename (used by abspath). */ | |
858 | static /*@only@*/ cstring osd_cwd = cstring_undefined; | |
859 | ||
860 | static void osd_setWorkingDirectory (void) | |
861 | { | |
7ac543fa | 862 | # if defined (UNIX) || defined (OS2) |
53a89507 | 863 | char *buf = dmalloc (sizeof (*buf) * MAXPATHLEN); |
864 | char *cwd = getcwd (buf, MAXPATHLEN); | |
865 | ||
866 | llassert (cstring_isUndefined (osd_cwd)); | |
867 | ||
868 | if (cwd == NULL) | |
869 | { | |
870 | lldiagmsg (message ("Cannot get working directory: %s\n", | |
871 | lldecodeerror (errno))); | |
e5081f8c | 872 | osd_cwd = cstring_makeLiteral ("<missing directory>"); |
53a89507 | 873 | } |
874 | else | |
875 | { | |
876 | osd_cwd = cstring_fromCharsNew (cwd); | |
877 | } | |
878 | ||
879 | sfree (buf); | |
880 | # else | |
881 | ; /* Don't know how to do this for non-POSIX platforms */ | |
882 | # endif | |
883 | } | |
884 | ||
885 | void osd_initMod (void) | |
886 | { | |
887 | osd_setWorkingDirectory (); | |
888 | } | |
889 | ||
6fcd0b1e | 890 | void osd_destroyMod (void) |
891 | { | |
892 | cstring_free (osd_cwd); | |
893 | osd_cwd = cstring_undefined; | |
894 | } | |
895 | ||
53a89507 | 896 | cstring osd_absolutePath (cstring cwd, cstring filename) |
897 | { | |
7ac543fa | 898 | # if defined (UNIX) || defined (OS2) |
53a89507 | 899 | /* Setup the current working directory as needed. */ |
900 | cstring cwd2 = cstring_isDefined (cwd) ? cwd : osd_cwd; | |
901 | char *abs_buffer; | |
902 | char *endp, *outp, *inp; | |
903 | ||
904 | /*@access cstring@*/ | |
905 | llassert (cstring_isDefined (cwd2)); | |
906 | llassert (cstring_isDefined (filename)); | |
907 | ||
e5081f8c | 908 | abs_buffer = (char *) dmalloc (cstring_length (cwd2) + cstring_length (filename) + 2); |
53a89507 | 909 | endp = abs_buffer; |
910 | ||
911 | /* | |
912 | ** Copy the filename (possibly preceded by the current working | |
913 | ** directory name) into the absolutization buffer. | |
914 | */ | |
915 | ||
916 | { | |
917 | const char *src_p; | |
918 | ||
7ac543fa | 919 | if (!osd_isConnectChar (filename[0]) |
920 | # ifdef OS2 | |
921 | && !(isalpha (filename[0]) && filename[1] == ':') | |
922 | # endif | |
923 | ) | |
53a89507 | 924 | { |
925 | src_p = cwd2; | |
926 | ||
927 | while ((*endp++ = *src_p++) != '\0') | |
928 | { | |
929 | continue; | |
930 | } | |
931 | ||
7ac543fa | 932 | *(endp-1) = CONNECTCHAR; /* overwrite null */ |
53a89507 | 933 | } |
934 | ||
935 | src_p = filename; | |
936 | ||
937 | while ((*endp++ = *src_p++) != '\0') | |
938 | { | |
939 | continue; | |
940 | } | |
941 | } | |
942 | ||
943 | /* Now make a copy of abs_buffer into abs_buffer, shortening the | |
944 | filename (by taking out slashes and dots) as we go. */ | |
945 | ||
946 | outp = inp = abs_buffer; | |
947 | *outp++ = *inp++; /* copy first slash */ | |
948 | #ifdef apollo | |
949 | if (inp[0] == '/') | |
950 | *outp++ = *inp++; /* copy second slash */ | |
951 | #endif | |
952 | for (;;) | |
953 | { | |
954 | if (inp[0] == '\0') | |
955 | { | |
956 | break; | |
957 | } | |
7ac543fa | 958 | else if (osd_isConnectChar (inp[0]) && osd_isConnectChar (outp[-1])) |
53a89507 | 959 | { |
960 | inp++; | |
961 | continue; | |
962 | } | |
7ac543fa | 963 | else if (inp[0] == '.' && osd_isConnectChar (outp[-1])) |
53a89507 | 964 | { |
965 | if (inp[1] == '\0') | |
966 | { | |
967 | break; | |
968 | } | |
7ac543fa | 969 | else if (osd_isConnectChar (inp[1])) |
53a89507 | 970 | { |
971 | inp += 2; | |
972 | continue; | |
973 | } | |
974 | else if ((inp[1] == '.') | |
7ac543fa | 975 | && (inp[2] == '\0' || osd_isConnectChar (inp[2]))) |
53a89507 | 976 | { |
7ac543fa | 977 | inp += (osd_isConnectChar (inp[2])) ? 3 : 2; |
53a89507 | 978 | outp -= 2; |
979 | ||
7ac543fa | 980 | while (outp >= abs_buffer && !osd_isConnectChar (*outp)) |
53a89507 | 981 | { |
982 | outp--; | |
983 | } | |
984 | ||
985 | if (outp < abs_buffer) | |
986 | { | |
987 | /* Catch cases like /.. where we try to backup to a | |
988 | point above the absolute root of the logical file | |
989 | system. */ | |
990 | ||
991 | llfatalbug (message ("Invalid file name: %s", filename)); | |
992 | } | |
993 | ||
994 | *++outp = '\0'; | |
995 | continue; | |
996 | } | |
997 | else | |
998 | { | |
999 | ; | |
1000 | } | |
1001 | } | |
1002 | else | |
1003 | { | |
1004 | ; | |
1005 | } | |
1006 | ||
1007 | *outp++ = *inp++; | |
1008 | } | |
1009 | ||
1010 | /* On exit, make sure that there is a trailing null, and make sure that | |
1011 | the last character of the returned string is *not* a slash. */ | |
1012 | ||
1013 | *outp = '\0'; | |
7ac543fa | 1014 | if (osd_isConnectChar (outp[-1])) |
53a89507 | 1015 | *--outp = '\0'; |
1016 | ||
1017 | /*@noaccess cstring@*/ | |
1018 | return cstring_fromChars (abs_buffer); | |
1019 | # else | |
4dd72714 | 1020 | DPRINTF (("Here: %s", filename)); |
53a89507 | 1021 | return cstring_copy (filename); |
1022 | # endif | |
1023 | } | |
1024 | ||
1025 | /* | |
1026 | ** Given a filename (and possibly a directory name from which the filename | |
1027 | ** is relative) return a string which is the shortest possible | |
1028 | ** equivalent for the corresponding full (absolutized) filename. The | |
1029 | ** shortest possible equivalent may be constructed by converting the | |
1030 | ** absolutized filename to be a relative filename (i.e. relative to | |
1031 | ** the actual current working directory). However if a relative filename | |
1032 | ** is longer, then the full absolute filename is returned. | |
1033 | ** | |
1034 | ** KNOWN BUG: subpart of the original filename is actually a symbolic link. | |
e73fb967 | 1035 | ** |
1036 | ** this is really horrible code...surely someone has written a less buggy version of this! | |
53a89507 | 1037 | */ |
1038 | ||
1039 | cstring osd_outputPath (cstring filename) | |
1040 | { | |
7ac543fa | 1041 | # if defined (UNIX) || defined (OS2) |
53a89507 | 1042 | char *rel_buffer; |
1043 | char *rel_buf_p; | |
1044 | cstring cwd_p = osd_cwd; | |
1045 | char *path_p; | |
1046 | int unmatched_slash_count = 0; | |
abd7f895 | 1047 | size_t filename_len = cstring_length (filename); |
53a89507 | 1048 | |
02b84d4b | 1049 | llassertretval (filename_len > 0, filename); |
abd7f895 | 1050 | |
53a89507 | 1051 | /*@access cstring@*/ |
1052 | path_p = filename; | |
6fcd0b1e | 1053 | rel_buffer = (char *) dmalloc (filename_len); |
1054 | rel_buf_p = rel_buffer; | |
e73fb967 | 1055 | *rel_buf_p = '\0'; |
53a89507 | 1056 | |
e5081f8c | 1057 | if (cwd_p == NULL) |
1058 | { | |
1059 | /* Need to prevent recursive assertion failures */ | |
1060 | return cstring_copy (filename); | |
1061 | } | |
1062 | ||
53a89507 | 1063 | llassert (cwd_p != NULL); |
1064 | llassert (path_p != NULL); | |
1065 | ||
1066 | while ((*cwd_p != '\0') && (*cwd_p == *path_p)) | |
1067 | { | |
1068 | cwd_p++; | |
1069 | path_p++; | |
1070 | } | |
1071 | ||
7ac543fa | 1072 | if ((*cwd_p == '\0') && (*path_p == '\0' || osd_isConnectChar (*path_p))) /* whole pwd matched */ |
53a89507 | 1073 | { |
1074 | if (*path_p == '\0') /* input *is* the current path! */ | |
6fcd0b1e | 1075 | { |
1076 | cstring_free (rel_buffer); | |
1077 | return cstring_makeLiteral ("."); | |
1078 | } | |
53a89507 | 1079 | else |
1080 | { | |
6fcd0b1e | 1081 | cstring_free (rel_buffer); |
140c27a8 | 1082 | return cstring_fromCharsNew (path_p + 1); |
53a89507 | 1083 | } |
1084 | } | |
1085 | else | |
1086 | { | |
51b94abc | 1087 | |
1088 | /* drl 2002-10/14 I had to put this code back*/ | |
1089 | /* the case that needs it is when splint is given an absolute path name of a file outside of the current directory and the subdirectories below the current directory. e.g. cd /home/; splint /tmp/prog.c | |
1090 | */ | |
1091 | ||
e73fb967 | 1092 | /* evans 2002-02-05 This is horrible code, which I've removed. I couldn't find any |
1093 | ** test cases that need it, so I hope I'm not breaking anything. | |
1094 | */ | |
51b94abc | 1095 | /*#if 0*/ |
e73fb967 | 1096 | |
53a89507 | 1097 | if (*path_p != '\0') |
1098 | { | |
1099 | --cwd_p; | |
1100 | --path_p; | |
6fcd0b1e | 1101 | |
1102 | while (cwd_p >= osd_cwd && !osd_isConnectChar (*cwd_p)) /* backup to last slash */ | |
53a89507 | 1103 | { |
1104 | --cwd_p; | |
1105 | --path_p; | |
1106 | } | |
1107 | cwd_p++; | |
1108 | path_p++; | |
1109 | unmatched_slash_count++; | |
1110 | } | |
e73fb967 | 1111 | |
53a89507 | 1112 | /* Find out how many directory levels in cwd were *not* matched. */ |
1113 | while (*cwd_p != '\0') | |
51b94abc | 1114 | { |
7ac543fa | 1115 | if (osd_isConnectChar (*cwd_p++)) |
53a89507 | 1116 | unmatched_slash_count++; |
1117 | } | |
1118 | ||
1119 | /* Now we know how long the "short name" will be. | |
1120 | Reject it if longer than the input. */ | |
1121 | if (unmatched_slash_count * 3 + strlen (path_p) >= filename_len) | |
1122 | { | |
6fcd0b1e | 1123 | cstring_free (rel_buffer); |
1124 | /* fprintf (stderr, "Returning filename: %s [%p]\n", filename); */ | |
53a89507 | 1125 | return cstring_copy (filename); |
1126 | } | |
51b94abc | 1127 | |
1128 | /*drl 10-14-2002 end previously removed code */ | |
1129 | /*#endif*/ | |
53a89507 | 1130 | /* For each of them, put a `../' at the beginning of the short name. */ |
1131 | while (unmatched_slash_count-- > 0) | |
1132 | { | |
1133 | /* Give up if the result gets to be longer | |
1134 | than the absolute path name. */ | |
485532fa | 1135 | char * temp_rel_buf_p; |
1136 | ||
1137 | /*drl This comment is necessary because for some reason Splint | |
1138 | does not realize that the pasts where rel_buf_p is released | |
1139 | do not reach here*/ | |
1140 | /*@-usereleased@*/ | |
1141 | temp_rel_buf_p = rel_buf_p; | |
1142 | /*@-usereleased@*/ | |
1143 | ||
1144 | if (rel_buffer + filename_len <= temp_rel_buf_p + 3) | |
53a89507 | 1145 | { |
1146 | sfree (rel_buffer); | |
1147 | return cstring_copy (filename); | |
1148 | } | |
1149 | ||
1150 | *rel_buf_p++ = '.'; | |
1151 | *rel_buf_p++ = '.'; | |
7ac543fa | 1152 | *rel_buf_p++ = CONNECTCHAR; |
53a89507 | 1153 | } |
1154 | ||
1155 | /* Then tack on the unmatched part of the desired file's name. */ | |
6fcd0b1e | 1156 | |
53a89507 | 1157 | do |
1158 | { | |
1159 | if (rel_buffer + filename_len <= rel_buf_p) | |
1160 | { | |
1161 | cstring_free (rel_buffer); | |
1162 | return cstring_copy (filename); | |
1163 | } | |
146e25eb | 1164 | } /*@-usereleased@*/ |
53a89507 | 1165 | while ((*rel_buf_p++ = *path_p++) != '\0') ; |
146e25eb | 1166 | |
140c27a8 | 1167 | |
b73d1009 | 1168 | /*@=usereleased@*/ /* Splint limitation: shouldn't need these */ |
53a89507 | 1169 | --rel_buf_p; |
e73fb967 | 1170 | |
7ac543fa | 1171 | if (osd_isConnectChar (*(rel_buf_p-1))) |
53a89507 | 1172 | *--rel_buf_p = '\0'; |
1173 | ||
6fcd0b1e | 1174 | /* fprintf (stderr, "Returning buffer: %s [%p]\n", rel_buffer, rel_buffer); */ |
53a89507 | 1175 | return rel_buffer; |
1176 | } | |
1177 | /*@noaccess cstring@*/ | |
1178 | # else | |
1179 | return cstring_copy (filename); | |
1180 | # endif | |
1181 | } | |
1182 | ||
f2b6724f | 1183 | cstring osd_getCurrentDirectory () |
1184 | { | |
1185 | # if defined(MSDOS) || defined(OS2) | |
1186 | return cstring_makeLiteralTemp (""); | |
1187 | # else | |
1188 | return cstring_makeLiteralTemp ("./"); | |
1189 | # endif | |
1190 | } | |
1191 | ||
53a89507 | 1192 | |
1193 |