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616915dd | 1 | /* |
11db3170 | 2 | ** Splint - annotation-assisted static program checker |
77d37419 | 3 | ** Copyright (C) 1994-2002 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" | |
65 | # include "portab.h" | |
66 | ||
67 | /* from stat.h */ | |
68 | /*@ignore@*/ | |
69 | extern int stat (const char *, /*@out@*/ struct stat *); | |
70 | /*@end@*/ | |
71 | ||
72 | static bool osd_executableFileExists (char *); | |
73 | ||
74 | static bool nextdir (char **p_current_dir, /*@out@*/ char **p_dir, | |
75 | /*@out@*/ size_t *p_len); | |
76 | ||
28bf4b0b | 77 | extern cstring LSLRootName (cstring filespec) |
616915dd | 78 | { |
28bf4b0b | 79 | /*@access cstring@*/ |
616915dd | 80 | char *result, *startName, *tail; |
81 | size_t nameLength; | |
82 | ||
28bf4b0b | 83 | llassert (cstring_isDefined (filespec)); |
616915dd | 84 | tail = strrchr (filespec, CONNECTCHAR); |
85 | startName = (tail == NULL ? filespec : &tail[1]); | |
86 | tail = strrchr (startName, '.'); | |
87 | nameLength = (tail == NULL ? strlen (startName) | |
88 | : size_fromInt (tail - startName)); | |
89 | result = dmalloc (nameLength + 1); | |
90 | strncpy (result, startName, nameLength); | |
91 | result[(int) nameLength] = '\0'; | |
92 | return result; | |
28bf4b0b | 93 | /*@noaccess cstring@*/ |
616915dd | 94 | } |
95 | ||
28bf4b0b | 96 | extern /*@observer@*/ cstring |
97 | osd_getEnvironment (cstring env, /*@returned@*/ cstring def) | |
616915dd | 98 | { |
28bf4b0b | 99 | /*@access cstring@*/ |
616915dd | 100 | char *ret = osd_getEnvironmentVariable (env); |
101 | ||
102 | if (ret == NULL) | |
103 | { | |
104 | return def; | |
105 | } | |
106 | else | |
107 | { | |
108 | return ret; | |
109 | } | |
28bf4b0b | 110 | /*@noaccess cstring@*/ |
616915dd | 111 | } |
112 | ||
113 | ||
114 | /* | |
115 | **++ | |
116 | ** FUNCTIONAL DESCRIPTION: | |
117 | ** | |
118 | ** This function attempts to locate a file in a search list. On VMS, it | |
119 | ** just concatinates the path and file names, and then lets RMS do the | |
120 | ** searching. On Ultrix, it searches for the file on the path. | |
121 | ** | |
122 | ** FORMAL PARAMETERS: | |
123 | ** | |
124 | ** path: search path where to look for the file. | |
125 | ** file: name of file to search for. | |
126 | ** returnPath: if a file is found, this is where the concatenated | |
127 | ** directory and file name are returned. | |
128 | ** | |
129 | ** RETURN VALUE: | |
130 | ** | |
131 | ** OSD_FILEFOUND: the file was found on the search list. | |
132 | ** OSD_FILENOTFOUND the file was not found. | |
133 | ** OSD_PATHTOOLONG the concatenated directory and file name are too | |
134 | ** long. | |
135 | ** | |
136 | ** SIDE EFFECTS: | |
137 | ** | |
138 | ** None | |
139 | ** | |
140 | ** PRECONDITIONS: | |
141 | ** | |
142 | ** Requires that parameters, path and file, are valid C strings. | |
143 | ** | |
144 | ** | |
145 | **-- | |
146 | */ | |
147 | ||
28bf4b0b | 148 | extern /*@observer@*/ cstring osd_getHomeDir () |
616915dd | 149 | { |
150 | /* Would something different be better for windows? */ | |
28bf4b0b | 151 | return (osd_getEnvironmentVariable (cstring_makeLiteralTemp ("HOME"))); |
616915dd | 152 | } |
153 | ||
28bf4b0b | 154 | filestatus osd_findOnLarchPath (cstring file, cstring *returnPath) |
616915dd | 155 | { |
28bf4b0b | 156 | return (osd_getPath (context_getLarchPath (), file, returnPath)); |
616915dd | 157 | } |
158 | ||
159 | extern filestatus | |
28bf4b0b | 160 | osd_getPath (cstring path, cstring file, cstring *returnPath) |
616915dd | 161 | { |
162 | char *fullPath; | |
163 | char *dirPtr; | |
164 | size_t dirLen; | |
165 | char aPath[MAXPATHLEN]; | |
166 | filestatus rVal = OSD_FILENOTFOUND; /* assume file not found. */ | |
28bf4b0b | 167 | |
168 | /*@access cstring@*/ | |
169 | ||
616915dd | 170 | fullPath = path; |
28bf4b0b | 171 | llassert (cstring_isDefined (file)); |
172 | ||
3e3ec469 | 173 | /* 2002-01-01: make sure returnPath gets defined even when there are errors. |
174 | ** (fixed splint checking detected this) | |
175 | */ | |
176 | ||
177 | *returnPath = cstring_undefined; | |
178 | ||
28bf4b0b | 179 | if (fullPath == NULL |
180 | || | |
616915dd | 181 | # if defined(OS2) || defined(MSDOS) || defined(WIN32) |
28bf4b0b | 182 | /* under OS/2 and MSDOS the includePath may be empty, if so, search |
183 | * the current directory. */ | |
184 | *fullPath == '\0' || | |
185 | (*file == CONNECTCHAR || (file[0] != '\0' && file[1] == ':')) | |
616915dd | 186 | # else |
28bf4b0b | 187 | (*file == CONNECTCHAR) |
616915dd | 188 | # endif |
28bf4b0b | 189 | ) |
616915dd | 190 | { |
28bf4b0b | 191 | /* No path specified. Look for it in the current directory. */ |
192 | ||
616915dd | 193 | strcpy (&aPath[0], file); |
28bf4b0b | 194 | |
616915dd | 195 | if (osd_fileExists (&aPath[0])) |
196 | { | |
197 | rVal = OSD_FILEFOUND; | |
198 | *returnPath = dmalloc (strlen (&aPath[0]) + 1); | |
199 | strcpy (*returnPath, &aPath[0]); | |
200 | } | |
201 | } | |
202 | else | |
203 | { | |
28bf4b0b | 204 | /* Path specified. Loop through directories in path looking for the */ |
205 | /* first occurrence of the file. */ | |
206 | ||
616915dd | 207 | while (nextdir (&fullPath, &dirPtr, &dirLen) && |
208 | rVal == OSD_FILENOTFOUND) | |
209 | { | |
210 | if ((dirLen + strlen (file) + 2) <= MAXPATHLEN) | |
211 | { | |
28bf4b0b | 212 | /* Cat directory and filename, and see if file exists. */ |
616915dd | 213 | strncpy (&aPath[0], dirPtr, dirLen); |
214 | strcpy (&aPath[0] + dirLen, ""); /* Null terminate aPath. */ | |
215 | strcat (&aPath[0], CONNECTSTR); | |
216 | strcat (&aPath[0], file); | |
28bf4b0b | 217 | |
616915dd | 218 | if (osd_fileExists (&aPath[0])) |
219 | { | |
220 | rVal = OSD_FILEFOUND; | |
221 | *returnPath = (char *) dmalloc (strlen (&aPath[0]) + 1); | |
222 | strcpy (*returnPath, &aPath[0]); | |
223 | } | |
224 | } | |
225 | else | |
226 | { | |
227 | rVal = OSD_PATHTOOLONG; | |
228 | } | |
229 | } | |
230 | } | |
3e3ec469 | 231 | |
616915dd | 232 | return rVal; |
28bf4b0b | 233 | /*@noaccess cstring@*/ |
616915dd | 234 | } |
235 | ||
236 | extern filestatus | |
28bf4b0b | 237 | osd_getExePath (cstring path, cstring file, cstring *returnPath) |
616915dd | 238 | { |
239 | char *fullPath; | |
240 | char *dirPtr; | |
241 | size_t dirLen; | |
242 | char aPath[MAXPATHLEN]; | |
243 | filestatus rVal = OSD_FILENOTFOUND; /* assume file not found. */ | |
28bf4b0b | 244 | /*@access cstring@*/ |
3e3ec469 | 245 | |
246 | *returnPath = cstring_undefined; | |
616915dd | 247 | fullPath = osd_getEnvironmentVariable (path); |
28bf4b0b | 248 | |
616915dd | 249 | if (fullPath == NULL) |
250 | { | |
28bf4b0b | 251 | /* No path specified. Look for it in the current directory. */ |
252 | llassert (cstring_isDefined (file)); | |
616915dd | 253 | strcpy (&aPath[0], file); |
28bf4b0b | 254 | |
616915dd | 255 | if (osd_fileExists (&aPath[0])) |
256 | { | |
257 | rVal = OSD_FILEFOUND; | |
258 | *returnPath = dmalloc (strlen (&aPath[0]) + 1); | |
259 | strcpy (*returnPath, &aPath[0]); | |
260 | } | |
261 | } | |
262 | else | |
263 | { | |
264 | /* | |
265 | ** Path specified. Loop through directories in path looking | |
266 | ** for the first occurrence of the file. | |
267 | */ | |
268 | ||
269 | while (nextdir (&fullPath, &dirPtr, &dirLen) && | |
270 | rVal == OSD_FILENOTFOUND) | |
271 | { | |
28bf4b0b | 272 | llassert (cstring_isDefined (file)); |
273 | ||
274 | if ((dirLen + cstring_length (file) + 2) <= MAXPATHLEN) | |
616915dd | 275 | { |
276 | /* Cat directory and filename, and see if file exists. */ | |
277 | strncpy (&aPath[0], dirPtr, dirLen); | |
278 | strcpy (&aPath[0] + dirLen, ""); /* Null terminate aPath. */ | |
279 | strcat (&aPath[0], CONNECTSTR); | |
280 | strcat (&aPath[0], file); | |
281 | ||
282 | if (osd_executableFileExists (&aPath[0])) | |
283 | { | |
284 | rVal = OSD_FILEFOUND; | |
285 | *returnPath = dmalloc (strlen (&aPath[0]) + 1); | |
286 | strcpy (*returnPath, &aPath[0]); | |
287 | } | |
288 | } | |
289 | else | |
290 | { | |
291 | rVal = OSD_PATHTOOLONG; | |
292 | } | |
293 | } | |
294 | } | |
295 | ||
296 | return rVal; | |
28bf4b0b | 297 | /*@noaccess cstring@*/ |
616915dd | 298 | } |
299 | ||
300 | bool | |
28bf4b0b | 301 | osd_fileExists (cstring filespec) |
616915dd | 302 | { |
303 | # ifdef UNIX | |
304 | struct stat buf; | |
28bf4b0b | 305 | return (stat (cstring_toCharsSafe (filespec), &buf) == 0); |
616915dd | 306 | # else |
307 | # if defined (WIN32) || defined (OS2) | |
dfd82dce | 308 | FILE *test = fileTable_openFile (context_fileTable (), filespec, "r"); |
28bf4b0b | 309 | |
616915dd | 310 | if (test != NULL) |
28bf4b0b | 311 | { |
dfd82dce | 312 | (void) fileTable_closeFile (context_fileTable (),test); |
28bf4b0b | 313 | return TRUE; |
314 | } | |
616915dd | 315 | else |
28bf4b0b | 316 | { |
317 | return FALSE; | |
318 | } | |
616915dd | 319 | # else |
320 | return FALSE; | |
321 | # endif | |
322 | # endif | |
323 | } | |
324 | ||
4dd72714 | 325 | # if defined(__IBMC__) && defined(OS2) |
326 | # define S_IFMT (unsigned short)0xFFFF | |
327 | # endif | |
328 | ||
329 | /* | |
330 | ** Works form Win32 at least... | |
331 | */ | |
332 | ||
333 | # ifndef S_IXUSR | |
334 | /*@-macrounrecog@*/ | |
335 | # define S_IXUSR _S_IEXEC | |
336 | /*@=macrounrecog@*/ | |
337 | # endif | |
338 | ||
616915dd | 339 | bool |
340 | osd_executableFileExists (/*@unused@*/ char *filespec) | |
341 | { | |
342 | # ifdef UNIX | |
4dd72714 | 343 | struct stat buf; |
616915dd | 344 | if (stat (filespec, &buf) == 0) |
345 | { | |
346 | /* mask by file type */ | |
347 | /*@-unrecog@*/ /* S_IFMT is not defined */ | |
348 | if ((buf.st_mode & S_IFMT) != S_IFDIR /*@=unrecog@*/) /* not a directory */ | |
349 | { | |
350 | /* as long as it is an executable file */ | |
351 | # if defined(__IBMC__) && defined(OS2) | |
4dd72714 | 352 | int com_or_exe_pos = strlen( filespec) - 4; |
353 | return stricmp( &filespec[com_or_exe_pos], ".exe") == 0 | |
354 | || stricmp( &filespec[com_or_exe_pos], ".com") == 0 | |
355 | || stricmp( &filespec[com_or_exe_pos], ".bat") == 0 | |
356 | || stricmp( &filespec[com_or_exe_pos], ".cmd") == 0; | |
616915dd | 357 | # else |
358 | return (((buf.st_mode & S_IXUSR) | |
4dd72714 | 359 | # if defined (S_IXGRP) && defined (S_IXOTH) |
616915dd | 360 | | (buf.st_mode & S_IXGRP) | |
361 | (buf.st_mode & S_IXOTH) | |
362 | # endif | |
363 | ) != 0); | |
364 | # endif | |
365 | } | |
366 | } | |
616915dd | 367 | # endif |
368 | return (FALSE); | |
369 | ||
370 | } | |
371 | ||
372 | /* | |
373 | **++ | |
374 | ** FUNCTIONAL DESCRIPTION: | |
375 | ** | |
376 | ** Find the next directory from a directory path. | |
377 | ** | |
378 | ** FORMAL PARAMETERS: | |
379 | ** | |
380 | ** char ** current_dir : | |
381 | ** Points to the current position in the path string. The first time | |
382 | ** you call this routine, this should point to the first character of | |
383 | ** the path. On return, this will be updated to point to the | |
384 | ** terminating \0 or : of the first directory found. You can then pass | |
385 | ** it unchanged for subsequent calls; this routine will correctly skip | |
386 | ** over the :. | |
387 | ** | |
388 | ** char ** dir : | |
389 | ** On exit, this will point to the first character of the directory | |
390 | ** that was found. This will be a pointer directly into the client's | |
391 | ** path string. | |
392 | ** | |
393 | ** unsigned int * len : | |
394 | ** On exit, this will contain the length of the directory that was | |
395 | ** found, not counting any terminating \0 or :. If no directory was | |
396 | ** found, this will be 0. | |
397 | ** | |
398 | ** RETURN VALUE: | |
399 | ** TRUE if we found another directory. | |
400 | ** FALSE otherwise. | |
401 | ** | |
402 | ** DESIGN: | |
403 | ** | |
404 | ** We return a pointer and length, rather than a string, because of a) | |
405 | ** historical reasons; and b) this avoids having to allocate storage. | |
406 | ** | |
407 | ** | |
408 | ** | |
409 | **-- | |
410 | */ | |
411 | ||
412 | static bool | |
413 | nextdir (d_char *current_dir, d_char *dir, size_t *len) | |
414 | { | |
415 | char *tchar; | |
416 | ||
417 | if (**current_dir == '\0') | |
418 | { | |
419 | *len = 0; | |
3e3ec469 | 420 | *dir = NULL; |
616915dd | 421 | return FALSE; |
422 | } | |
423 | ||
7272a1c1 | 424 | *dir = (**current_dir == PATH_SEPARATOR ? *current_dir + 1 : *current_dir); |
616915dd | 425 | |
426 | /* Find next ':' or end of string */ | |
7272a1c1 | 427 | for (tchar = *dir; *tchar != '\0' && *tchar != PATH_SEPARATOR; tchar++) |
616915dd | 428 | { |
429 | ; | |
430 | } | |
431 | ||
432 | *current_dir = tchar; | |
433 | *len = size_fromInt (tchar - *dir); | |
434 | return TRUE; | |
435 | } | |
436 | ||
28bf4b0b | 437 | /*@observer@*/ /*@null@*/ cstring osd_getEnvironmentVariable (cstring var) |
616915dd | 438 | { |
1d239d69 | 439 | /* evans - 2001-08-26 fixed OS instead of OS2 bug, reported by Alexander Mai */ |
440 | # if defined(UNIX) || defined(OS2) || defined(MSDOS) || defined(WIN32) | |
28bf4b0b | 441 | char *val = getenv (cstring_toCharsSafe (var)); |
442 | ||
443 | if (val == NULL) | |
444 | { | |
445 | return cstring_undefined; | |
446 | } | |
447 | else | |
448 | { | |
449 | return cstring_makeLiteralTemp (val); | |
450 | } | |
616915dd | 451 | # else |
28bf4b0b | 452 | return cstring_undefined; |
616915dd | 453 | # endif |
454 | } | |
455 | ||
456 | # ifndef NOLCL | |
457 | ||
458 | # ifdef WIN32 | |
459 | extern /*@external@*/ int _flushall (void) /*@modifies fileSystem@*/ ; | |
460 | # endif | |
461 | ||
462 | # ifndef system | |
463 | extern /*@external@*/ int system (const char *) /*@modifies fileSystem@*/ ; | |
464 | # endif | |
28bf4b0b | 465 | int osd_system (cstring cmd) |
616915dd | 466 | { |
467 | int res; | |
468 | /* system ("printenv"); */ | |
469 | # ifdef WIN32 | |
470 | (void) _flushall (); | |
471 | # endif | |
472 | ||
28bf4b0b | 473 | res = system (cstring_toCharsSafe (cmd)); |
616915dd | 474 | return res; |
475 | } | |
476 | # endif | |
477 | ||
478 | # ifndef unlink | |
b7e84605 | 479 | /* This should be defined by unistd.h */ |
616915dd | 480 | /*@-redecl@*/ |
481 | extern /*@external@*/ int unlink (const char *) /*@modifies fileSystem@*/ ; | |
482 | /*@=redecl@*/ | |
483 | # endif | |
484 | ||
4dd72714 | 485 | static s_tempError = FALSE; |
486 | ||
487 | void osd_setTempError (void) | |
488 | { | |
489 | s_tempError = TRUE; | |
490 | } | |
491 | ||
28bf4b0b | 492 | int osd_unlink (cstring fname) |
616915dd | 493 | { |
494 | int res; | |
495 | ||
28bf4b0b | 496 | res = unlink (cstring_toCharsSafe (fname)); |
616915dd | 497 | |
498 | if (res != 0) | |
499 | { | |
4dd72714 | 500 | if (!s_tempError) |
501 | { | |
502 | llcontbug (message ("Cannot remove temporary file: %s (%s)", | |
503 | fname, | |
504 | cstring_fromChars (strerror (errno)))); | |
505 | } | |
616915dd | 506 | } |
507 | ||
508 | return res; | |
509 | } | |
510 | ||
616915dd | 511 | # if defined (WIN32) || defined (OS2) && defined (__IBMC__) |
512 | int | |
513 | # else | |
514 | int /* pid_t */ | |
515 | # endif | |
516 | osd_getPid () | |
517 | { | |
518 | # if defined (WIN32) || defined (OS2) && defined (__IBMC__) | |
519 | int pid = _getpid (); | |
520 | # else | |
28bf4b0b | 521 | pid_t pid = getpid (); |
616915dd | 522 | # endif |
523 | ||
524 | return (int) pid; | |
525 | } | |
526 | ||
28bf4b0b | 527 | cstring osd_fixDefine (cstring x) |
616915dd | 528 | { |
28bf4b0b | 529 | /*@access cstring@*/ |
530 | llassert (cstring_isDefined (x)); | |
616915dd | 531 | # ifdef UNIX |
532 | if (strchr (x, '\'') != NULL) { | |
533 | /* | |
534 | ** If there is a single quote, check for <ident>='<string>' and | |
535 | ** produce <ident>=<string> | |
536 | */ | |
537 | ||
538 | char *eqs = strchr (x, '='); | |
539 | ||
540 | if (eqs != NULL) { | |
541 | if (eqs[1] == '\'') { | |
542 | char *endqu = strrchr (x, '\''); | |
543 | ||
544 | if (endqu != NULL) { | |
545 | if (*(endqu - 1) != '\\') { | |
546 | if (*(endqu + 1) == '\0') { | |
547 | cstring res; | |
548 | cstring def; | |
549 | ||
550 | *endqu = '\0'; | |
551 | def = cstring_fromChars (eqs + 2); | |
552 | eqs[1] = '\0'; | |
553 | res = cstring_concat (cstring_fromChars (x), def); | |
554 | return res; | |
555 | } | |
556 | } | |
557 | } | |
558 | } | |
559 | } | |
560 | } | |
561 | ||
562 | # endif | |
563 | ||
28bf4b0b | 564 | return cstring_copy (x); |
565 | /*@noaccess cstring@*/ | |
616915dd | 566 | } |
567 | ||
28bf4b0b | 568 | bool osd_fileIsReadable (cstring f) |
616915dd | 569 | { |
dfd82dce | 570 | FILE *fl = fileTable_openFile (context_fileTable (), f, "r"); |
616915dd | 571 | |
dfd82dce | 572 | if (fl != NULL) |
616915dd | 573 | { |
dfd82dce | 574 | check (fileTable_closeFile (context_fileTable (), fl)); |
616915dd | 575 | return (TRUE); |
576 | } | |
577 | else | |
578 | { | |
579 | return (FALSE); | |
580 | } | |
581 | } | |
582 | ||
583 | bool osd_isConnectChar (char c) | |
584 | { | |
585 | if (c == CONNECTCHAR) | |
586 | { | |
587 | return TRUE; | |
588 | } | |
589 | ||
590 | # ifdef HASALTCONNECTCHAR | |
591 | if (c == ALTCONNECTCHAR) | |
592 | { | |
593 | return TRUE; | |
594 | } | |
595 | # endif | |
596 | ||
597 | return FALSE; | |
598 | } | |
599 | ||
68de3f33 | 600 | /* |
601 | ** Returns true if c2 starts with the same path as c1 | |
602 | ** | |
603 | ** This is called by context_isSystemDir to determine if a | |
604 | ** directory is on the system path. | |
605 | ** | |
606 | ** In unix, this is just a string comparison. For Win32 and OS2, we need a more | |
607 | ** complex comparison. | |
608 | */ | |
609 | ||
610 | bool osd_equalCanonicalPrefix (cstring dirpath, cstring prefixpath) | |
611 | { | |
612 | llassert (cstring_isDefined (prefixpath)); | |
613 | ||
614 | if (cstring_isEmpty (dirpath)) | |
615 | { | |
616 | return (cstring_isEmpty (prefixpath)); | |
617 | } | |
618 | ||
619 | # if defined (WIN32) || defined (OS2) | |
620 | ||
621 | /*@access cstring@*/ /* Moved this from cstring - should abstract it... */ | |
622 | ||
623 | /* | |
624 | ** If one has a drive specification, but the other doesn't, skip it. | |
625 | */ | |
626 | ||
627 | if (strchr (dirpath, ':') == NULL | |
628 | && strchr (prefixpath, ':') != NULL) | |
629 | { | |
630 | prefixpath = strchr (prefixpath, ':') + 1; | |
631 | } | |
632 | else | |
633 | { | |
634 | if (strchr (prefixpath, ':') == NULL | |
635 | && strchr (dirpath, ':') != NULL) | |
636 | { | |
637 | dirpath = strchr (dirpath, ':') + 1; | |
638 | } | |
639 | } | |
640 | ||
641 | { | |
642 | int len = size_toInt (strlen (prefixpath)); | |
643 | int i = 0; | |
644 | int slen = 0; | |
645 | ||
646 | for (i = 0, slen = 0; i < len; i++, slen++) | |
647 | { | |
648 | /* Allow any number of connect characters in any combination: | |
649 | * c:/usr//src\/foo == c:\\usr/src\/foo | |
650 | * After this we'll be at the last of such a sequence */ | |
651 | ||
652 | if (osd_isConnectChar (dirpath[slen]) && osd_isConnectChar (prefixpath[i])) | |
653 | { | |
654 | /* Skip one or more connect chars */ | |
655 | ||
656 | for (; osd_isConnectChar (dirpath[slen+1]); ++slen) | |
657 | { | |
658 | ; | |
659 | } | |
660 | ||
661 | for (; osd_isConnectChar (prefixpath[i+1]); ++i) | |
662 | { | |
663 | ; | |
664 | } | |
665 | } | |
666 | /* Windows, MSDOS and OS/2 use case-insensitive path specs! */ | |
667 | else if (toupper (dirpath[slen]) != toupper (prefixpath[i])) | |
668 | { | |
669 | return FALSE; | |
670 | } | |
671 | ||
672 | } | |
673 | } | |
674 | ||
675 | /*@noaccess cstring@*/ | |
676 | ||
677 | return TRUE; | |
678 | # else | |
679 | return (cstring_equalPrefix (dirpath, prefixpath)); | |
680 | # endif | |
681 | } | |
682 | ||
107b60d6 | 683 | # if 0 |
684 | /* | |
685 | ** This code provided by Herbert Martin Dietze, to canonicalize path names. | |
686 | */ | |
687 | ||
688 | char *osd_getcwd (/*@returned@*/ char *str, size_t size) | |
689 | { | |
690 | return getcwd (str, size); | |
691 | } | |
692 | ||
693 | /*@null@*/ /*@observer@*/ char * | |
694 | osd_dirNext (char *str) | |
695 | { | |
696 | char *p1 = strchr (str, '/'); | |
697 | char *p2 = strchr (str, '\\'); | |
698 | ||
699 | if (p1 == NULL) | |
700 | { | |
701 | if (p2 != NULL) | |
702 | { | |
703 | return p2 + 1; | |
704 | } | |
705 | else | |
706 | { | |
707 | return NULL; | |
708 | } | |
709 | } | |
710 | else if (p2 == NULL) | |
711 | { | |
712 | return p1 + 1; | |
713 | } | |
714 | else /* both not null */ | |
715 | { | |
716 | return (p1 < p2 ? p1 : p2) + 1; | |
717 | } | |
718 | } | |
719 | ||
720 | static void | |
721 | osd_dirShift (char *str, size_t num) /*@modifies str@*/ | |
722 | { | |
723 | int i; | |
724 | ||
725 | assert (num <= strlen (str)); | |
726 | ||
727 | for (i = 0; str[i] != '\0'; i++) | |
728 | { | |
729 | str[i] = str[i + num]; | |
730 | } | |
731 | } | |
732 | ||
733 | bool | |
734 | osd_dirDotdot (char *str) | |
735 | { | |
736 | return str[0] == '.' && str[1] == '.' && osd_isConnectChar (str[2]); | |
737 | } | |
738 | ||
739 | void | |
740 | osd_dirNormalize (char *str) | |
741 | { | |
742 | char *pos1, *pos2; | |
743 | ||
744 | for (; osd_isConnectChar (str[0]); str++) | |
745 | { | |
746 | } | |
747 | ||
748 | for (; str != NULL && osd_dirDotdot (str); str = osd_dirNext (str)) | |
749 | { | |
750 | } | |
751 | ||
752 | for (pos1 = pos2 = str; | |
753 | pos1 != NULL; | |
754 | pos2 = pos1, pos1 = osd_dirNext (pos1)) | |
755 | { | |
756 | /* remove redundant `./' entry */ | |
757 | while (pos1[0] == '.' && osd_isConnectChar (pos1[1])) | |
758 | { | |
759 | osd_dirShift (pos1, 2); | |
760 | } | |
761 | ||
762 | /* remove redundant `foo/../' entry */ | |
763 | if (osd_dirDotdot (pos1) && pos2 < pos1) | |
764 | { | |
765 | osd_dirShift (pos2, pos1 - pos2 + 1); | |
766 | osd_dirNormalize (str); | |
767 | } | |
768 | } | |
769 | } | |
770 | ||
771 | /*@null@*/ char * | |
772 | osd_dirAbsolute (char *str) | |
773 | { | |
774 | char *ret = NULL; | |
775 | size_t size = PATH_MAX * sizeof (*ret); | |
776 | ||
4dd72714 | 777 | DPRINTF (("Absolute for: %s", str)); |
778 | ||
7ac543fa | 779 | # if defined (WIN32) || defined (OS2) || defined (MSDOS) |
4dd72714 | 780 | if (strlen (str) > 1 && str[1] == ':') |
781 | { | |
782 | /* | |
783 | ** Its a drive letter | |
784 | */ | |
785 | ||
786 | ret = dmalloc ((strlen (str) + 1) * sizeof (*ret)); | |
787 | strcpy (ret, str); | |
788 | } | |
789 | else | |
790 | # endif | |
107b60d6 | 791 | if (osd_isConnectChar (str[0])) |
792 | { | |
793 | ret = dmalloc ((strlen (str) + 1) * sizeof (*ret)); | |
794 | strcpy (ret, str); | |
795 | } | |
796 | else | |
797 | { | |
798 | ret = dmalloc (size); | |
799 | ||
800 | ret = osd_getcwd (ret, size); | |
801 | ret = realloc (ret, (strlen (str) + strlen (ret) + 2) * sizeof (*ret)); | |
802 | ||
803 | if (ret == NULL) | |
804 | { | |
805 | return NULL; | |
806 | } | |
807 | ||
808 | strcat (ret, CONNECTSTR); | |
809 | strcat (ret, str); | |
810 | } | |
811 | ||
812 | osd_dirNormalize (ret); | |
813 | return ret; | |
814 | } | |
815 | ||
816 | # endif | |
53a89507 | 817 | |
818 | /* | |
819 | ** absolute paths | |
820 | ** | |
821 | ** This code is adapted from: | |
822 | ** | |
823 | ** 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 | |
824 | ** | |
825 | ** | |
826 | ** Protoize program - Original version by Ron Guilmette (rfg@segfault.us.com). | |
827 | ** Copyright (C) 1989, 1992, 1993, 1994, 1995 Free Software Foundation, Inc. | |
828 | ** | |
829 | ** This file is part of GNU CC. | |
830 | ** | |
831 | ** GNU CC is free software; you can redistribute it and/or modify | |
832 | ** it under the terms of the GNU General Public License as published by | |
833 | ** the Free Software Foundation; either version 2, or (at your option) | |
834 | ** any later version. | |
835 | ** | |
836 | ** GNU CC is distributed in the hope that it will be useful, | |
837 | ** but WITHOUT ANY WARRANTY; without even the implied warranty of | |
838 | ** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
839 | ** GNU General Public License for more details. | |
840 | ** | |
841 | ** You should have received a copy of the GNU General Public License | |
842 | ** along with GNU CC; see the file COPYING. If not, write to | |
843 | ** the Free Software Foundation, 59 Temple Place - Suite 330, | |
844 | ** Boston, MA 02111-1307, USA. | |
845 | */ | |
846 | ||
847 | /* | |
848 | ** Return the absolutized filename for the given relative | |
849 | ** filename. Note that if that filename is already absolute, it may | |
850 | ** still be returned in a modified form because this routine also | |
851 | ** eliminates redundant slashes and single dots and eliminates double | |
852 | ** dots to get a shortest possible filename from the given input | |
853 | ** filename. The absolutization of relative filenames is made by | |
854 | ** assuming that the given filename is to be taken as relative to | |
855 | ** the first argument (cwd) or to the current directory if cwd is | |
856 | ** NULL. | |
857 | */ | |
858 | ||
859 | /* A pointer to the current directory filename (used by abspath). */ | |
860 | static /*@only@*/ cstring osd_cwd = cstring_undefined; | |
861 | ||
862 | static void osd_setWorkingDirectory (void) | |
863 | { | |
7ac543fa | 864 | # if defined (UNIX) || defined (OS2) |
53a89507 | 865 | char *buf = dmalloc (sizeof (*buf) * MAXPATHLEN); |
866 | char *cwd = getcwd (buf, MAXPATHLEN); | |
867 | ||
868 | llassert (cstring_isUndefined (osd_cwd)); | |
869 | ||
870 | if (cwd == NULL) | |
871 | { | |
872 | lldiagmsg (message ("Cannot get working directory: %s\n", | |
873 | lldecodeerror (errno))); | |
874 | } | |
875 | else | |
876 | { | |
877 | osd_cwd = cstring_fromCharsNew (cwd); | |
878 | } | |
879 | ||
880 | sfree (buf); | |
881 | # else | |
882 | ; /* Don't know how to do this for non-POSIX platforms */ | |
883 | # endif | |
884 | } | |
885 | ||
886 | void osd_initMod (void) | |
887 | { | |
888 | osd_setWorkingDirectory (); | |
889 | } | |
890 | ||
891 | cstring osd_absolutePath (cstring cwd, cstring filename) | |
892 | { | |
7ac543fa | 893 | # if defined (UNIX) || defined (OS2) |
53a89507 | 894 | /* Setup the current working directory as needed. */ |
895 | cstring cwd2 = cstring_isDefined (cwd) ? cwd : osd_cwd; | |
896 | char *abs_buffer; | |
897 | char *endp, *outp, *inp; | |
898 | ||
899 | /*@access cstring@*/ | |
900 | llassert (cstring_isDefined (cwd2)); | |
901 | llassert (cstring_isDefined (filename)); | |
902 | ||
903 | abs_buffer = (char *) dmalloc (size_fromInt (cstring_length (cwd2) + cstring_length (filename) + 2)); | |
904 | endp = abs_buffer; | |
905 | ||
906 | /* | |
907 | ** Copy the filename (possibly preceded by the current working | |
908 | ** directory name) into the absolutization buffer. | |
909 | */ | |
910 | ||
911 | { | |
912 | const char *src_p; | |
913 | ||
7ac543fa | 914 | if (!osd_isConnectChar (filename[0]) |
915 | # ifdef OS2 | |
916 | && !(isalpha (filename[0]) && filename[1] == ':') | |
917 | # endif | |
918 | ) | |
53a89507 | 919 | { |
920 | src_p = cwd2; | |
921 | ||
922 | while ((*endp++ = *src_p++) != '\0') | |
923 | { | |
924 | continue; | |
925 | } | |
926 | ||
7ac543fa | 927 | *(endp-1) = CONNECTCHAR; /* overwrite null */ |
53a89507 | 928 | } |
929 | ||
930 | src_p = filename; | |
931 | ||
932 | while ((*endp++ = *src_p++) != '\0') | |
933 | { | |
934 | continue; | |
935 | } | |
936 | } | |
937 | ||
938 | /* Now make a copy of abs_buffer into abs_buffer, shortening the | |
939 | filename (by taking out slashes and dots) as we go. */ | |
940 | ||
941 | outp = inp = abs_buffer; | |
942 | *outp++ = *inp++; /* copy first slash */ | |
943 | #ifdef apollo | |
944 | if (inp[0] == '/') | |
945 | *outp++ = *inp++; /* copy second slash */ | |
946 | #endif | |
947 | for (;;) | |
948 | { | |
949 | if (inp[0] == '\0') | |
950 | { | |
951 | break; | |
952 | } | |
7ac543fa | 953 | else if (osd_isConnectChar (inp[0]) && osd_isConnectChar (outp[-1])) |
53a89507 | 954 | { |
955 | inp++; | |
956 | continue; | |
957 | } | |
7ac543fa | 958 | else if (inp[0] == '.' && osd_isConnectChar (outp[-1])) |
53a89507 | 959 | { |
960 | if (inp[1] == '\0') | |
961 | { | |
962 | break; | |
963 | } | |
7ac543fa | 964 | else if (osd_isConnectChar (inp[1])) |
53a89507 | 965 | { |
966 | inp += 2; | |
967 | continue; | |
968 | } | |
969 | else if ((inp[1] == '.') | |
7ac543fa | 970 | && (inp[2] == '\0' || osd_isConnectChar (inp[2]))) |
53a89507 | 971 | { |
7ac543fa | 972 | inp += (osd_isConnectChar (inp[2])) ? 3 : 2; |
53a89507 | 973 | outp -= 2; |
974 | ||
7ac543fa | 975 | while (outp >= abs_buffer && !osd_isConnectChar (*outp)) |
53a89507 | 976 | { |
977 | outp--; | |
978 | } | |
979 | ||
980 | if (outp < abs_buffer) | |
981 | { | |
982 | /* Catch cases like /.. where we try to backup to a | |
983 | point above the absolute root of the logical file | |
984 | system. */ | |
985 | ||
986 | llfatalbug (message ("Invalid file name: %s", filename)); | |
987 | } | |
988 | ||
989 | *++outp = '\0'; | |
990 | continue; | |
991 | } | |
992 | else | |
993 | { | |
994 | ; | |
995 | } | |
996 | } | |
997 | else | |
998 | { | |
999 | ; | |
1000 | } | |
1001 | ||
1002 | *outp++ = *inp++; | |
1003 | } | |
1004 | ||
1005 | /* On exit, make sure that there is a trailing null, and make sure that | |
1006 | the last character of the returned string is *not* a slash. */ | |
1007 | ||
1008 | *outp = '\0'; | |
7ac543fa | 1009 | if (osd_isConnectChar (outp[-1])) |
53a89507 | 1010 | *--outp = '\0'; |
1011 | ||
1012 | /*@noaccess cstring@*/ | |
1013 | return cstring_fromChars (abs_buffer); | |
1014 | # else | |
4dd72714 | 1015 | DPRINTF (("Here: %s", filename)); |
53a89507 | 1016 | return cstring_copy (filename); |
1017 | # endif | |
1018 | } | |
1019 | ||
1020 | /* | |
1021 | ** Given a filename (and possibly a directory name from which the filename | |
1022 | ** is relative) return a string which is the shortest possible | |
1023 | ** equivalent for the corresponding full (absolutized) filename. The | |
1024 | ** shortest possible equivalent may be constructed by converting the | |
1025 | ** absolutized filename to be a relative filename (i.e. relative to | |
1026 | ** the actual current working directory). However if a relative filename | |
1027 | ** is longer, then the full absolute filename is returned. | |
1028 | ** | |
1029 | ** KNOWN BUG: subpart of the original filename is actually a symbolic link. | |
e73fb967 | 1030 | ** |
1031 | ** this is really horrible code...surely someone has written a less buggy version of this! | |
53a89507 | 1032 | */ |
1033 | ||
1034 | cstring osd_outputPath (cstring filename) | |
1035 | { | |
7ac543fa | 1036 | # if defined (UNIX) || defined (OS2) |
53a89507 | 1037 | char *rel_buffer; |
1038 | char *rel_buf_p; | |
1039 | cstring cwd_p = osd_cwd; | |
1040 | char *path_p; | |
1041 | int unmatched_slash_count = 0; | |
abd7f895 | 1042 | size_t filename_len = cstring_length (filename); |
53a89507 | 1043 | |
02b84d4b | 1044 | llassertretval (filename_len > 0, filename); |
abd7f895 | 1045 | |
53a89507 | 1046 | /*@access cstring@*/ |
1047 | path_p = filename; | |
1048 | rel_buf_p = rel_buffer = (char *) dmalloc (filename_len); | |
e73fb967 | 1049 | *rel_buf_p = '\0'; |
53a89507 | 1050 | |
1051 | llassert (cwd_p != NULL); | |
1052 | llassert (path_p != NULL); | |
1053 | ||
1054 | while ((*cwd_p != '\0') && (*cwd_p == *path_p)) | |
1055 | { | |
1056 | cwd_p++; | |
1057 | path_p++; | |
1058 | } | |
1059 | ||
7ac543fa | 1060 | if ((*cwd_p == '\0') && (*path_p == '\0' || osd_isConnectChar (*path_p))) /* whole pwd matched */ |
53a89507 | 1061 | { |
1062 | if (*path_p == '\0') /* input *is* the current path! */ | |
1063 | return cstring_makeLiteral ("."); | |
1064 | else | |
1065 | { | |
1b8ae690 | 1066 | /*@i324 ! splint didn't report an errors for: return ++path_p; */ |
53a89507 | 1067 | return cstring_fromCharsNew (++path_p); |
1068 | } | |
1069 | } | |
1070 | else | |
1071 | { | |
e73fb967 | 1072 | /* evans 2002-02-05 This is horrible code, which I've removed. I couldn't find any |
1073 | ** test cases that need it, so I hope I'm not breaking anything. | |
1074 | */ | |
1075 | ||
1076 | # if 0 | |
53a89507 | 1077 | if (*path_p != '\0') |
1078 | { | |
1079 | --cwd_p; | |
1080 | --path_p; | |
7ac543fa | 1081 | while (!osd_isConnectChar (*cwd_p)) /* backup to last slash */ |
53a89507 | 1082 | { |
1083 | --cwd_p; | |
1084 | --path_p; | |
1085 | } | |
1086 | cwd_p++; | |
1087 | path_p++; | |
1088 | unmatched_slash_count++; | |
1089 | } | |
e73fb967 | 1090 | |
53a89507 | 1091 | /* Find out how many directory levels in cwd were *not* matched. */ |
1092 | while (*cwd_p != '\0') | |
1093 | { | |
7ac543fa | 1094 | if (osd_isConnectChar (*cwd_p++)) |
53a89507 | 1095 | unmatched_slash_count++; |
1096 | } | |
1097 | ||
1098 | /* Now we know how long the "short name" will be. | |
1099 | Reject it if longer than the input. */ | |
1100 | if (unmatched_slash_count * 3 + strlen (path_p) >= filename_len) | |
1101 | { | |
1102 | return cstring_copy (filename); | |
1103 | } | |
e73fb967 | 1104 | # endif |
53a89507 | 1105 | |
53a89507 | 1106 | /* For each of them, put a `../' at the beginning of the short name. */ |
1107 | while (unmatched_slash_count-- > 0) | |
1108 | { | |
1109 | /* Give up if the result gets to be longer | |
1110 | than the absolute path name. */ | |
1111 | if (rel_buffer + filename_len <= rel_buf_p + 3) | |
1112 | { | |
1113 | sfree (rel_buffer); | |
1114 | return cstring_copy (filename); | |
1115 | } | |
1116 | ||
1117 | *rel_buf_p++ = '.'; | |
1118 | *rel_buf_p++ = '.'; | |
7ac543fa | 1119 | *rel_buf_p++ = CONNECTCHAR; |
53a89507 | 1120 | } |
1121 | ||
1122 | /* Then tack on the unmatched part of the desired file's name. */ | |
1123 | do | |
1124 | { | |
1125 | if (rel_buffer + filename_len <= rel_buf_p) | |
1126 | { | |
1127 | cstring_free (rel_buffer); | |
1128 | return cstring_copy (filename); | |
1129 | } | |
146e25eb | 1130 | } /*@-usereleased@*/ |
53a89507 | 1131 | while ((*rel_buf_p++ = *path_p++) != '\0') ; |
146e25eb | 1132 | |
e73fb967 | 1133 | /*@=usereleased@*/ /*@i523! shouldn't need these */ |
53a89507 | 1134 | --rel_buf_p; |
e73fb967 | 1135 | |
7ac543fa | 1136 | if (osd_isConnectChar (*(rel_buf_p-1))) |
53a89507 | 1137 | *--rel_buf_p = '\0'; |
1138 | ||
1139 | return rel_buffer; | |
1140 | } | |
1141 | /*@noaccess cstring@*/ | |
1142 | # else | |
1143 | return cstring_copy (filename); | |
1144 | # endif | |
1145 | } | |
1146 | ||
f2b6724f | 1147 | cstring osd_getCurrentDirectory () |
1148 | { | |
1149 | # if defined(MSDOS) || defined(OS2) | |
1150 | return cstring_makeLiteralTemp (""); | |
1151 | # else | |
1152 | return cstring_makeLiteralTemp ("./"); | |
1153 | # endif | |
1154 | } | |
1155 | ||
53a89507 | 1156 | |
1157 |