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1 | /* | |
2 | ** Splint - annotation-assisted static program checker | |
3 | ** Copyright (C) 1994-2003 University of Virginia, | |
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 | ** | |
20 | ** For information on splint: info@splint.org | |
21 | ** To report a bug: splint-bug@splint.org | |
22 | ** For more information: http://www.splint.org | |
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() | |
40 | * Herbert 02/17/2002: | |
41 | * - added OS/2 support to absolute file names | |
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> | |
50 | ||
51 | /* POSIX platforms should defined getpid in unistd.h */ | |
52 | # if defined (WIN32) || (defined(OS2) && defined(__IBMC__)) | |
53 | # include <process.h> | |
54 | # include <direct.h> | |
55 | # define getcwd _getcwd | |
56 | # else | |
57 | # include <unistd.h> | |
58 | # endif | |
59 | ||
60 | /*@end@*/ | |
61 | /*@=allmacros*/ | |
62 | # include "splintMacros.nf" | |
63 | # include "basic.h" | |
64 | # include "osd.h" | |
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 | ||
76 | extern cstring LSLRootName (cstring filespec) | |
77 | { | |
78 | /*@access cstring@*/ | |
79 | char *result, *startName, *tail; | |
80 | size_t nameLength; | |
81 | ||
82 | llassert (cstring_isDefined (filespec)); | |
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; | |
92 | /*@noaccess cstring@*/ | |
93 | } | |
94 | ||
95 | extern /*@observer@*/ cstring | |
96 | osd_getEnvironment (cstring env, /*@returned@*/ cstring def) | |
97 | { | |
98 | /*@access cstring@*/ | |
99 | char *ret = osd_getEnvironmentVariable (env); | |
100 | ||
101 | if (ret == NULL) | |
102 | { | |
103 | return def; | |
104 | } | |
105 | else | |
106 | { | |
107 | return ret; | |
108 | } | |
109 | /*@noaccess cstring@*/ | |
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 | ||
147 | extern /*@observer@*/ cstring osd_getHomeDir () | |
148 | { | |
149 | /* Would something different be better for windows? */ | |
150 | return (osd_getEnvironmentVariable (cstring_makeLiteralTemp ("HOME"))); | |
151 | } | |
152 | ||
153 | filestatus osd_findOnLarchPath (cstring file, cstring *returnPath) | |
154 | { | |
155 | return (osd_getPath (context_getLarchPath (), file, returnPath)); | |
156 | } | |
157 | ||
158 | extern filestatus | |
159 | osd_getPath (cstring path, cstring file, cstring *returnPath) | |
160 | { | |
161 | char *fullPath; | |
162 | char *dirPtr; | |
163 | size_t dirLen; | |
164 | char aPath[MAXPATHLEN]; | |
165 | filestatus rVal = OSD_FILENOTFOUND; /* assume file not found. */ | |
166 | ||
167 | /*@access cstring@*/ | |
168 | ||
169 | fullPath = path; | |
170 | llassert (cstring_isDefined (file)); | |
171 | ||
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 | ||
178 | if (fullPath == NULL | |
179 | || | |
180 | # if defined(OS2) || defined(MSDOS) || defined(WIN32) | |
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] == ':')) | |
185 | # else | |
186 | (*file == CONNECTCHAR) | |
187 | # endif | |
188 | ) | |
189 | { | |
190 | /* No path specified. Look for it in the current directory. */ | |
191 | ||
192 | strcpy (&aPath[0], file); | |
193 | ||
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 | { | |
203 | /* Path specified. Loop through directories in path looking for the */ | |
204 | /* first occurrence of the file. */ | |
205 | ||
206 | while (nextdir (&fullPath, &dirPtr, &dirLen) | |
207 | && rVal == OSD_FILENOTFOUND) | |
208 | { | |
209 | if ((dirLen + strlen (file) + 2) <= MAXPATHLEN) | |
210 | { | |
211 | /* Cat directory and filename, and see if file exists. */ | |
212 | strncpy (&aPath[0], dirPtr, dirLen); | |
213 | strcpy (&aPath[0] + dirLen, ""); /* Null terminate aPath. */ | |
214 | strcat (&aPath[0], CONNECTSTR); | |
215 | strcat (&aPath[0], file); | |
216 | ||
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 | } | |
230 | ||
231 | return rVal; | |
232 | /*@noaccess cstring@*/ | |
233 | } | |
234 | ||
235 | extern filestatus | |
236 | osd_getExePath (cstring path, cstring file, cstring *returnPath) | |
237 | { | |
238 | char *fullPath; | |
239 | char *dirPtr; | |
240 | size_t dirLen; | |
241 | char aPath[MAXPATHLEN]; | |
242 | filestatus rVal = OSD_FILENOTFOUND; /* assume file not found. */ | |
243 | /*@access cstring@*/ | |
244 | ||
245 | *returnPath = cstring_undefined; | |
246 | fullPath = osd_getEnvironmentVariable (path); | |
247 | ||
248 | if (fullPath == NULL) | |
249 | { | |
250 | /* No path specified. Look for it in the current directory. */ | |
251 | llassert (cstring_isDefined (file)); | |
252 | strcpy (&aPath[0], file); | |
253 | ||
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 | { | |
271 | llassert (cstring_isDefined (file)); | |
272 | ||
273 | if ((dirLen + cstring_length (file) + 2) <= MAXPATHLEN) | |
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; | |
296 | /*@noaccess cstring@*/ | |
297 | } | |
298 | ||
299 | bool | |
300 | osd_fileExists (cstring filespec) | |
301 | { | |
302 | # ifdef UNIX | |
303 | struct stat buf; | |
304 | /*@i3@*/ return (stat (cstring_toCharsSafe (filespec), &buf) == 0); /* spurious */ | |
305 | # else | |
306 | # if defined (WIN32) || defined (OS2) | |
307 | FILE *test = fileTable_openReadFile (context_fileTable (), filespec); | |
308 | ||
309 | if (test != NULL) | |
310 | { | |
311 | (void) fileTable_closeFile (context_fileTable (),test); | |
312 | return TRUE; | |
313 | } | |
314 | else | |
315 | { | |
316 | return FALSE; | |
317 | } | |
318 | # else | |
319 | return FALSE; | |
320 | # endif | |
321 | # endif | |
322 | } | |
323 | ||
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 | ||
338 | bool | |
339 | osd_executableFileExists (/*@unused@*/ char *filespec) | |
340 | { | |
341 | # ifdef UNIX | |
342 | struct stat buf; | |
343 | if (stat (filespec, &buf) == 0) | |
344 | { | |
345 | /* mask by file type */ | |
346 | /*@-unrecog@*/ /* S_IFMT is not defined */ | |
347 | /*@i32@*/ if ((buf.st_mode & S_IFMT) != S_IFDIR /*@=unrecog@*/) /* not a directory */ /* spurious */ | |
348 | { | |
349 | /* as long as it is an executable file */ | |
350 | # if defined(__IBMC__) && defined(OS2) | |
351 | int com_or_exe_pos = strlen( filespec) - 4; | |
352 | return stricmp( &filespec[com_or_exe_pos], ".exe") == 0 | |
353 | || stricmp( &filespec[com_or_exe_pos], ".com") == 0 | |
354 | || stricmp( &filespec[com_or_exe_pos], ".bat") == 0 | |
355 | || stricmp( &filespec[com_or_exe_pos], ".cmd") == 0; | |
356 | # else | |
357 | return (((buf.st_mode & S_IXUSR) | |
358 | # if defined (S_IXGRP) && defined (S_IXOTH) | |
359 | | (buf.st_mode & S_IXGRP) | | |
360 | (buf.st_mode & S_IXOTH) | |
361 | # endif | |
362 | /*@i4@*/ ) != 0); /* spurious */ | |
363 | # endif | |
364 | } | |
365 | } | |
366 | # endif | |
367 | /*@i4@*/ return (FALSE); /* spurious */ | |
368 | ||
369 | } | |
370 | ||
371 | /* | |
372 | **++ | |
373 | ** FUNCTIONAL DESCRIPTION: | |
374 | ** | |
375 | ** Find the next directory from a directory path. | |
376 | ** | |
377 | ** FORMAL PARAMETERS: | |
378 | ** | |
379 | ** char ** current_dir : | |
380 | ** Points to the current position in the path string. The first time | |
381 | ** you call this routine, this should point to the first character of | |
382 | ** the path. On return, this will be updated to point to the | |
383 | ** terminating \0 or : of the first directory found. You can then pass | |
384 | ** it unchanged for subsequent calls; this routine will correctly skip | |
385 | ** over the :. | |
386 | ** | |
387 | ** char ** dir : | |
388 | ** On exit, this will point to the first character of the directory | |
389 | ** that was found. This will be a pointer directly into the client's | |
390 | ** path string. | |
391 | ** | |
392 | ** unsigned int * len : | |
393 | ** On exit, this will contain the length of the directory that was | |
394 | ** found, not counting any terminating \0 or :. If no directory was | |
395 | ** found, this will be 0. | |
396 | ** | |
397 | ** RETURN VALUE: | |
398 | ** TRUE if we found another directory. | |
399 | ** FALSE otherwise. | |
400 | ** | |
401 | ** DESIGN: | |
402 | ** | |
403 | ** We return a pointer and length, rather than a string, because of a) | |
404 | ** historical reasons; and b) this avoids having to allocate storage. | |
405 | ** | |
406 | ** | |
407 | ** | |
408 | **-- | |
409 | */ | |
410 | ||
411 | static bool | |
412 | nextdir (d_char *current_dir, d_char *dir, size_t *len) | |
413 | { | |
414 | char *tchar; | |
415 | ||
416 | if (**current_dir == '\0') | |
417 | { | |
418 | *len = 0; | |
419 | *dir = NULL; | |
420 | return FALSE; | |
421 | } | |
422 | ||
423 | *dir = (**current_dir == PATH_SEPARATOR ? *current_dir + 1 : *current_dir); | |
424 | ||
425 | /* Find next ':' or end of string */ | |
426 | for (tchar = *dir; *tchar != '\0' && *tchar != PATH_SEPARATOR; tchar++) | |
427 | { | |
428 | ; | |
429 | } | |
430 | ||
431 | *current_dir = tchar; | |
432 | *len = size_fromInt (tchar - *dir); | |
433 | return TRUE; | |
434 | } | |
435 | ||
436 | /*@observer@*/ /*@null@*/ cstring osd_getEnvironmentVariable (cstring var) | |
437 | { | |
438 | /* evans - 2001-08-26 fixed OS instead of OS2 bug, reported by Alexander Mai */ | |
439 | # if defined(UNIX) || defined(OS2) || defined(MSDOS) || defined(WIN32) | |
440 | char *val = getenv (cstring_toCharsSafe (var)); | |
441 | ||
442 | if (val == NULL) | |
443 | { | |
444 | return cstring_undefined; | |
445 | } | |
446 | else | |
447 | { | |
448 | return cstring_makeLiteralTemp (val); | |
449 | } | |
450 | # else | |
451 | return cstring_undefined; | |
452 | # endif | |
453 | } | |
454 | ||
455 | # if defined (WIN32) || defined (OS2) && defined (__IBMC__) | |
456 | extern /*@external@*/ int _flushall (void) /*@modifies fileSystem@*/ ; | |
457 | # endif | |
458 | ||
459 | # ifndef system | |
460 | extern /*@external@*/ int system (const char *) /*@modifies fileSystem@*/ ; | |
461 | # endif | |
462 | int osd_system (cstring cmd) | |
463 | { | |
464 | int res; | |
465 | /* system ("printenv"); */ | |
466 | # if defined (WIN32) || defined (OS2) && defined (__IBMC__) | |
467 | (void) _flushall (); | |
468 | # endif | |
469 | ||
470 | res = system (cstring_toCharsSafe (cmd)); | |
471 | return res; | |
472 | } | |
473 | ||
474 | # ifndef unlink | |
475 | /* This should be defined by unistd.h */ | |
476 | /*@-redecl@*/ | |
477 | extern /*@external@*/ int unlink (const char *) /*@modifies fileSystem@*/ ; | |
478 | /*@=redecl@*/ | |
479 | # endif | |
480 | ||
481 | static bool s_tempError = FALSE; | |
482 | ||
483 | void osd_setTempError (void) | |
484 | { | |
485 | s_tempError = TRUE; | |
486 | } | |
487 | ||
488 | int osd_unlink (cstring fname) | |
489 | { | |
490 | int res; | |
491 | ||
492 | res = unlink (cstring_toCharsSafe (fname)); | |
493 | ||
494 | if (res != 0) | |
495 | { | |
496 | if (!s_tempError) | |
497 | { | |
498 | llcontbug (message ("Cannot remove temporary file: %s (%s)", | |
499 | fname, | |
500 | cstring_fromChars (strerror (errno)))); | |
501 | } | |
502 | } | |
503 | ||
504 | return res; | |
505 | } | |
506 | ||
507 | # if defined (WIN32) || defined (OS2) && defined (__IBMC__) | |
508 | int | |
509 | # else | |
510 | int /* pid_t */ | |
511 | # endif | |
512 | osd_getPid () | |
513 | { | |
514 | # if defined (WIN32) || defined (OS2) && defined (__IBMC__) | |
515 | int pid = _getpid (); | |
516 | # else | |
517 | __pid_t pid = getpid (); | |
518 | # endif | |
519 | ||
520 | return (int) pid; | |
521 | } | |
522 | ||
523 | cstring osd_fixDefine (cstring x) | |
524 | { | |
525 | /*@access cstring@*/ | |
526 | llassert (cstring_isDefined (x)); | |
527 | # ifdef UNIX | |
528 | if (strchr (x, '\'') != NULL) { | |
529 | /* | |
530 | ** If there is a single quote, check for <ident>='<string>' and | |
531 | ** produce <ident>=<string> | |
532 | */ | |
533 | ||
534 | char *eqs = strchr (x, '='); | |
535 | ||
536 | if (eqs != NULL) { | |
537 | if (eqs[1] == '\'') { | |
538 | char *endqu = strrchr (x, '\''); | |
539 | ||
540 | if (endqu != NULL) { | |
541 | if (*(endqu - 1) != '\\') { | |
542 | if (*(endqu + 1) == '\0') { | |
543 | cstring res; | |
544 | cstring def; | |
545 | ||
546 | *endqu = '\0'; | |
547 | def = cstring_fromChars (eqs + 2); | |
548 | eqs[1] = '\0'; | |
549 | res = cstring_concat (cstring_fromChars (x), def); | |
550 | return res; | |
551 | } | |
552 | } | |
553 | } | |
554 | } | |
555 | } | |
556 | } | |
557 | ||
558 | # endif | |
559 | ||
560 | return cstring_copy (x); | |
561 | /*@noaccess cstring@*/ | |
562 | } | |
563 | ||
564 | bool osd_fileIsReadable (cstring f) | |
565 | { | |
566 | FILE *fl = fileTable_openReadFile (context_fileTable (), f); | |
567 | ||
568 | if (fl != NULL) | |
569 | { | |
570 | check (fileTable_closeFile (context_fileTable (), fl)); | |
571 | return (TRUE); | |
572 | } | |
573 | else | |
574 | { | |
575 | return (FALSE); | |
576 | } | |
577 | } | |
578 | ||
579 | bool osd_isConnectChar (char c) | |
580 | { | |
581 | if (c == CONNECTCHAR) | |
582 | { | |
583 | return TRUE; | |
584 | } | |
585 | ||
586 | # ifdef HASALTCONNECTCHAR | |
587 | if (c == ALTCONNECTCHAR) | |
588 | { | |
589 | return TRUE; | |
590 | } | |
591 | # endif | |
592 | ||
593 | return FALSE; | |
594 | } | |
595 | ||
596 | /* | |
597 | ** Returns true if c2 starts with the same path as c1 | |
598 | ** | |
599 | ** This is called by context_isSystemDir to determine if a | |
600 | ** directory is on the system path. | |
601 | ** | |
602 | ** In unix, this is just a string comparison. For Win32 and OS2, we need a more | |
603 | ** complex comparison. | |
604 | */ | |
605 | ||
606 | bool osd_equalCanonicalPrefix (cstring dirpath, cstring prefixpath) | |
607 | { | |
608 | llassert (cstring_isDefined (prefixpath)); | |
609 | ||
610 | if (cstring_isEmpty (dirpath)) | |
611 | { | |
612 | return (cstring_isEmpty (prefixpath)); | |
613 | } | |
614 | ||
615 | # if defined (WIN32) || defined (OS2) | |
616 | ||
617 | /*@access cstring@*/ /* Moved this from cstring - should abstract it... */ | |
618 | ||
619 | /* | |
620 | ** If one has a drive specification, but the other doesn't, skip it. | |
621 | */ | |
622 | ||
623 | if (strchr (dirpath, ':') == NULL | |
624 | && strchr (prefixpath, ':') != NULL) | |
625 | { | |
626 | prefixpath = strchr (prefixpath, ':') + 1; | |
627 | } | |
628 | else | |
629 | { | |
630 | if (strchr (prefixpath, ':') == NULL | |
631 | && strchr (dirpath, ':') != NULL) | |
632 | { | |
633 | dirpath = strchr (dirpath, ':') + 1; | |
634 | } | |
635 | } | |
636 | ||
637 | { | |
638 | int len = size_toInt (strlen (prefixpath)); | |
639 | int i = 0; | |
640 | int slen = 0; | |
641 | ||
642 | for (i = 0, slen = 0; i < len; i++, slen++) | |
643 | { | |
644 | /* Allow any number of connect characters in any combination: | |
645 | * c:/usr//src\/foo == c:\\usr/src\/foo | |
646 | * After this we'll be at the last of such a sequence */ | |
647 | ||
648 | if (osd_isConnectChar (dirpath[slen]) && osd_isConnectChar (prefixpath[i])) | |
649 | { | |
650 | /* Skip one or more connect chars */ | |
651 | ||
652 | for (; osd_isConnectChar (dirpath[slen+1]); ++slen) | |
653 | { | |
654 | ; | |
655 | } | |
656 | ||
657 | for (; osd_isConnectChar (prefixpath[i+1]); ++i) | |
658 | { | |
659 | ; | |
660 | } | |
661 | } | |
662 | /* Windows, MSDOS and OS/2 use case-insensitive path specs! */ | |
663 | else if (toupper (dirpath[slen]) != toupper (prefixpath[i])) | |
664 | { | |
665 | return FALSE; | |
666 | } | |
667 | ||
668 | } | |
669 | } | |
670 | ||
671 | /*@noaccess cstring@*/ | |
672 | ||
673 | return TRUE; | |
674 | # else | |
675 | return (cstring_equalPrefix (dirpath, prefixpath)); | |
676 | # endif | |
677 | } | |
678 | ||
679 | # if 0 | |
680 | /* | |
681 | ** This code provided by Herbert Martin Dietze, to canonicalize path names. | |
682 | */ | |
683 | ||
684 | char *osd_getcwd (/*@returned@*/ char *str, size_t size) | |
685 | { | |
686 | return getcwd (str, size); | |
687 | } | |
688 | ||
689 | /*@null@*/ /*@observer@*/ char * | |
690 | osd_dirNext (char *str) | |
691 | { | |
692 | char *p1 = strchr (str, '/'); | |
693 | char *p2 = strchr (str, '\\'); | |
694 | ||
695 | if (p1 == NULL) | |
696 | { | |
697 | if (p2 != NULL) | |
698 | { | |
699 | return p2 + 1; | |
700 | } | |
701 | else | |
702 | { | |
703 | return NULL; | |
704 | } | |
705 | } | |
706 | else if (p2 == NULL) | |
707 | { | |
708 | return p1 + 1; | |
709 | } | |
710 | else /* both not null */ | |
711 | { | |
712 | return (p1 < p2 ? p1 : p2) + 1; | |
713 | } | |
714 | } | |
715 | ||
716 | static void | |
717 | osd_dirShift (char *str, size_t num) /*@modifies str@*/ | |
718 | { | |
719 | int i; | |
720 | ||
721 | assert (num <= strlen (str)); | |
722 | ||
723 | for (i = 0; str[i] != '\0'; i++) | |
724 | { | |
725 | str[i] = str[i + num]; | |
726 | } | |
727 | } | |
728 | ||
729 | bool | |
730 | osd_dirDotdot (char *str) | |
731 | { | |
732 | return str[0] == '.' && str[1] == '.' && osd_isConnectChar (str[2]); | |
733 | } | |
734 | ||
735 | void | |
736 | osd_dirNormalize (char *str) | |
737 | { | |
738 | char *pos1, *pos2; | |
739 | ||
740 | for (; osd_isConnectChar (str[0]); str++) | |
741 | { | |
742 | } | |
743 | ||
744 | for (; str != NULL && osd_dirDotdot (str); str = osd_dirNext (str)) | |
745 | { | |
746 | } | |
747 | ||
748 | for (pos1 = pos2 = str; | |
749 | pos1 != NULL; | |
750 | pos2 = pos1, pos1 = osd_dirNext (pos1)) | |
751 | { | |
752 | /* remove redundant `./' entry */ | |
753 | while (pos1[0] == '.' && osd_isConnectChar (pos1[1])) | |
754 | { | |
755 | osd_dirShift (pos1, 2); | |
756 | } | |
757 | ||
758 | /* remove redundant `foo/../' entry */ | |
759 | if (osd_dirDotdot (pos1) && pos2 < pos1) | |
760 | { | |
761 | osd_dirShift (pos2, pos1 - pos2 + 1); | |
762 | osd_dirNormalize (str); | |
763 | } | |
764 | } | |
765 | } | |
766 | ||
767 | /*@null@*/ char * | |
768 | osd_dirAbsolute (char *str) | |
769 | { | |
770 | char *ret = NULL; | |
771 | size_t size = PATH_MAX * sizeof (*ret); | |
772 | ||
773 | DPRINTF (("Absolute for: %s", str)); | |
774 | ||
775 | # if defined (WIN32) || defined (OS2) || defined (MSDOS) | |
776 | if (strlen (str) > 1 && str[1] == ':') | |
777 | { | |
778 | /* | |
779 | ** Its a drive letter | |
780 | */ | |
781 | ||
782 | ret = dmalloc ((strlen (str) + 1) * sizeof (*ret)); | |
783 | strcpy (ret, str); | |
784 | } | |
785 | else | |
786 | # endif | |
787 | if (osd_isConnectChar (str[0])) | |
788 | { | |
789 | ret = dmalloc ((strlen (str) + 1) * sizeof (*ret)); | |
790 | strcpy (ret, str); | |
791 | } | |
792 | else | |
793 | { | |
794 | ret = dmalloc (size); | |
795 | ||
796 | ret = osd_getcwd (ret, size); | |
797 | ret = realloc (ret, (strlen (str) + strlen (ret) + 2) * sizeof (*ret)); | |
798 | ||
799 | if (ret == NULL) | |
800 | { | |
801 | return NULL; | |
802 | } | |
803 | ||
804 | strcat (ret, CONNECTSTR); | |
805 | strcat (ret, str); | |
806 | } | |
807 | ||
808 | osd_dirNormalize (ret); | |
809 | return ret; | |
810 | } | |
811 | ||
812 | # endif | |
813 | ||
814 | /* | |
815 | ** absolute paths | |
816 | ** | |
817 | ** This code is adapted from: | |
818 | ** | |
819 | ** 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 | |
820 | ** | |
821 | ** | |
822 | ** Protoize program - Original version by Ron Guilmette (rfg@segfault.us.com). | |
823 | ** Copyright (C) 1989, 1992, 1993, 1994, 1995 Free Software Foundation, Inc. | |
824 | ** | |
825 | ** This file is part of GNU CC. | |
826 | ** | |
827 | ** GNU CC is free software; you can redistribute it and/or modify | |
828 | ** it under the terms of the GNU General Public License as published by | |
829 | ** the Free Software Foundation; either version 2, or (at your option) | |
830 | ** any later version. | |
831 | ** | |
832 | ** GNU CC is distributed in the hope that it will be useful, | |
833 | ** but WITHOUT ANY WARRANTY; without even the implied warranty of | |
834 | ** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
835 | ** GNU General Public License for more details. | |
836 | ** | |
837 | ** You should have received a copy of the GNU General Public License | |
838 | ** along with GNU CC; see the file COPYING. If not, write to | |
839 | ** the Free Software Foundation, 59 Temple Place - Suite 330, | |
840 | ** Boston, MA 02111-1307, USA. | |
841 | */ | |
842 | ||
843 | /* | |
844 | ** Return the absolutized filename for the given relative | |
845 | ** filename. Note that if that filename is already absolute, it may | |
846 | ** still be returned in a modified form because this routine also | |
847 | ** eliminates redundant slashes and single dots and eliminates double | |
848 | ** dots to get a shortest possible filename from the given input | |
849 | ** filename. The absolutization of relative filenames is made by | |
850 | ** assuming that the given filename is to be taken as relative to | |
851 | ** the first argument (cwd) or to the current directory if cwd is | |
852 | ** NULL. | |
853 | */ | |
854 | ||
855 | /* A pointer to the current directory filename (used by abspath). */ | |
856 | static /*@only@*/ cstring osd_cwd = cstring_undefined; | |
857 | ||
858 | static void osd_setWorkingDirectory (void) | |
859 | { | |
860 | # if defined (UNIX) || defined (OS2) | |
861 | char *buf = dmalloc (sizeof (*buf) * MAXPATHLEN); | |
862 | char *cwd = getcwd (buf, MAXPATHLEN); | |
863 | ||
864 | llassert (cstring_isUndefined (osd_cwd)); | |
865 | ||
866 | if (cwd == NULL) | |
867 | { | |
868 | lldiagmsg (message ("Cannot get working directory: %s\n", | |
869 | lldecodeerror (errno))); | |
870 | osd_cwd = cstring_makeLiteral ("<missing directory>"); | |
871 | } | |
872 | else | |
873 | { | |
874 | osd_cwd = cstring_fromCharsNew (cwd); | |
875 | } | |
876 | ||
877 | sfree (buf); | |
878 | # else | |
879 | ; /* Don't know how to do this for non-POSIX platforms */ | |
880 | # endif | |
881 | } | |
882 | ||
883 | void osd_initMod (void) | |
884 | { | |
885 | osd_setWorkingDirectory (); | |
886 | } | |
887 | ||
888 | void osd_destroyMod (void) | |
889 | { | |
890 | cstring_free (osd_cwd); | |
891 | osd_cwd = cstring_undefined; | |
892 | } | |
893 | ||
894 | cstring osd_absolutePath (cstring cwd, cstring filename) | |
895 | { | |
896 | # if defined (UNIX) || defined (OS2) | |
897 | /* Setup the current working directory as needed. */ | |
898 | cstring cwd2 = cstring_isDefined (cwd) ? cwd : osd_cwd; | |
899 | char *abs_buffer; | |
900 | char *endp, *outp, *inp; | |
901 | ||
902 | /*@access cstring@*/ | |
903 | llassert (cstring_isDefined (cwd2)); | |
904 | llassert (cstring_isDefined (filename)); | |
905 | ||
906 | abs_buffer = (char *) dmalloc (cstring_length (cwd2) + cstring_length (filename) + 2); | |
907 | endp = abs_buffer; | |
908 | ||
909 | /* | |
910 | ** Copy the filename (possibly preceded by the current working | |
911 | ** directory name) into the absolutization buffer. | |
912 | */ | |
913 | ||
914 | { | |
915 | const char *src_p; | |
916 | ||
917 | if (!osd_isConnectChar (filename[0]) | |
918 | # ifdef OS2 | |
919 | && !(isalpha (filename[0]) && filename[1] == ':') | |
920 | # endif | |
921 | ) | |
922 | { | |
923 | src_p = cwd2; | |
924 | ||
925 | while ((*endp++ = *src_p++) != '\0') | |
926 | { | |
927 | continue; | |
928 | } | |
929 | ||
930 | *(endp-1) = CONNECTCHAR; /* overwrite null */ | |
931 | } | |
932 | ||
933 | src_p = filename; | |
934 | ||
935 | while ((*endp++ = *src_p++) != '\0') | |
936 | { | |
937 | continue; | |
938 | } | |
939 | } | |
940 | ||
941 | /* Now make a copy of abs_buffer into abs_buffer, shortening the | |
942 | filename (by taking out slashes and dots) as we go. */ | |
943 | ||
944 | outp = inp = abs_buffer; | |
945 | *outp++ = *inp++; /* copy first slash */ | |
946 | #ifdef apollo | |
947 | if (inp[0] == '/') | |
948 | *outp++ = *inp++; /* copy second slash */ | |
949 | #endif | |
950 | for (;;) | |
951 | { | |
952 | if (inp[0] == '\0') | |
953 | { | |
954 | break; | |
955 | } | |
956 | else if (osd_isConnectChar (inp[0]) && osd_isConnectChar (outp[-1])) | |
957 | { | |
958 | inp++; | |
959 | continue; | |
960 | } | |
961 | else if (inp[0] == '.' && osd_isConnectChar (outp[-1])) | |
962 | { | |
963 | if (inp[1] == '\0') | |
964 | { | |
965 | break; | |
966 | } | |
967 | else if (osd_isConnectChar (inp[1])) | |
968 | { | |
969 | inp += 2; | |
970 | continue; | |
971 | } | |
972 | else if ((inp[1] == '.') | |
973 | && (inp[2] == '\0' || osd_isConnectChar (inp[2]))) | |
974 | { | |
975 | inp += (osd_isConnectChar (inp[2])) ? 3 : 2; | |
976 | outp -= 2; | |
977 | ||
978 | while (outp >= abs_buffer && !osd_isConnectChar (*outp)) | |
979 | { | |
980 | outp--; | |
981 | } | |
982 | ||
983 | if (outp < abs_buffer) | |
984 | { | |
985 | /* Catch cases like /.. where we try to backup to a | |
986 | point above the absolute root of the logical file | |
987 | system. */ | |
988 | ||
989 | llfatalbug (message ("Invalid file name: %s", filename)); | |
990 | } | |
991 | ||
992 | *++outp = '\0'; | |
993 | continue; | |
994 | } | |
995 | else | |
996 | { | |
997 | ; | |
998 | } | |
999 | } | |
1000 | else | |
1001 | { | |
1002 | ; | |
1003 | } | |
1004 | ||
1005 | *outp++ = *inp++; | |
1006 | } | |
1007 | ||
1008 | /* On exit, make sure that there is a trailing null, and make sure that | |
1009 | the last character of the returned string is *not* a slash. */ | |
1010 | ||
1011 | *outp = '\0'; | |
1012 | if (osd_isConnectChar (outp[-1])) | |
1013 | *--outp = '\0'; | |
1014 | ||
1015 | /*@noaccess cstring@*/ | |
1016 | return cstring_fromChars (abs_buffer); | |
1017 | # else | |
1018 | DPRINTF (("Here: %s", filename)); | |
1019 | return cstring_copy (filename); | |
1020 | # endif | |
1021 | } | |
1022 | ||
1023 | /* | |
1024 | ** Given a filename (and possibly a directory name from which the filename | |
1025 | ** is relative) return a string which is the shortest possible | |
1026 | ** equivalent for the corresponding full (absolutized) filename. The | |
1027 | ** shortest possible equivalent may be constructed by converting the | |
1028 | ** absolutized filename to be a relative filename (i.e. relative to | |
1029 | ** the actual current working directory). However if a relative filename | |
1030 | ** is longer, then the full absolute filename is returned. | |
1031 | ** | |
1032 | ** KNOWN BUG: subpart of the original filename is actually a symbolic link. | |
1033 | ** | |
1034 | ** this is really horrible code...surely someone has written a less buggy version of this! | |
1035 | */ | |
1036 | ||
1037 | cstring osd_outputPath (cstring filename) | |
1038 | { | |
1039 | # if defined (UNIX) || defined (OS2) | |
1040 | char *rel_buffer; | |
1041 | char *rel_buf_p; | |
1042 | cstring cwd_p = osd_cwd; | |
1043 | char *path_p; | |
1044 | int unmatched_slash_count = 0; | |
1045 | size_t filename_len = cstring_length (filename); | |
1046 | ||
1047 | llassertretval (filename_len > 0, filename); | |
1048 | ||
1049 | /*@access cstring@*/ | |
1050 | path_p = filename; | |
1051 | rel_buffer = (char *) dmalloc (filename_len); | |
1052 | rel_buf_p = rel_buffer; | |
1053 | *rel_buf_p = '\0'; | |
1054 | ||
1055 | if (cwd_p == NULL) | |
1056 | { | |
1057 | /* Need to prevent recursive assertion failures */ | |
1058 | return cstring_copy (filename); | |
1059 | } | |
1060 | ||
1061 | llassert (cwd_p != NULL); | |
1062 | llassert (path_p != NULL); | |
1063 | ||
1064 | while ((*cwd_p != '\0') && (*cwd_p == *path_p)) | |
1065 | { | |
1066 | cwd_p++; | |
1067 | path_p++; | |
1068 | } | |
1069 | ||
1070 | if ((*cwd_p == '\0') && (*path_p == '\0' || osd_isConnectChar (*path_p))) /* whole pwd matched */ | |
1071 | { | |
1072 | if (*path_p == '\0') /* input *is* the current path! */ | |
1073 | { | |
1074 | cstring_free (rel_buffer); | |
1075 | return cstring_makeLiteral ("."); | |
1076 | } | |
1077 | else | |
1078 | { | |
1079 | cstring_free (rel_buffer); | |
1080 | return cstring_fromCharsNew (path_p + 1); | |
1081 | } | |
1082 | } | |
1083 | else | |
1084 | { | |
1085 | ||
1086 | /* drl 2002-10/14 I had to put this code back*/ | |
1087 | /* 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 | |
1088 | */ | |
1089 | ||
1090 | /* evans 2002-02-05 This is horrible code, which I've removed. I couldn't find any | |
1091 | ** test cases that need it, so I hope I'm not breaking anything. | |
1092 | */ | |
1093 | /*#if 0*/ | |
1094 | ||
1095 | if (*path_p != '\0') | |
1096 | { | |
1097 | --cwd_p; | |
1098 | --path_p; | |
1099 | ||
1100 | while (cwd_p >= osd_cwd && !osd_isConnectChar (*cwd_p)) /* backup to last slash */ | |
1101 | { | |
1102 | --cwd_p; | |
1103 | --path_p; | |
1104 | } | |
1105 | cwd_p++; | |
1106 | path_p++; | |
1107 | unmatched_slash_count++; | |
1108 | } | |
1109 | ||
1110 | /* Find out how many directory levels in cwd were *not* matched. */ | |
1111 | while (*cwd_p != '\0') | |
1112 | { | |
1113 | if (osd_isConnectChar (*cwd_p++)) | |
1114 | unmatched_slash_count++; | |
1115 | } | |
1116 | ||
1117 | /* Now we know how long the "short name" will be. | |
1118 | Reject it if longer than the input. */ | |
1119 | if (unmatched_slash_count * 3 + strlen (path_p) >= filename_len) | |
1120 | { | |
1121 | cstring_free (rel_buffer); | |
1122 | /* fprintf (stderr, "Returning filename: %s [%p]\n", filename); */ | |
1123 | return cstring_copy (filename); | |
1124 | } | |
1125 | ||
1126 | /*drl 10-14-2002 end previously removed code */ | |
1127 | /*#endif*/ | |
1128 | /* For each of them, put a `../' at the beginning of the short name. */ | |
1129 | while (unmatched_slash_count-- > 0) | |
1130 | { | |
1131 | /* Give up if the result gets to be longer | |
1132 | than the absolute path name. */ | |
1133 | char * temp_rel_buf_p; | |
1134 | ||
1135 | /*drl This comment is necessary because for some reason Splint | |
1136 | does not realize that the pasts where rel_buf_p is released | |
1137 | do not reach here*/ | |
1138 | /*@-usereleased@*/ | |
1139 | temp_rel_buf_p = rel_buf_p; | |
1140 | /*@-usereleased@*/ | |
1141 | ||
1142 | if (rel_buffer + filename_len <= temp_rel_buf_p + 3) | |
1143 | { | |
1144 | sfree (rel_buffer); | |
1145 | return cstring_copy (filename); | |
1146 | } | |
1147 | ||
1148 | *rel_buf_p++ = '.'; | |
1149 | *rel_buf_p++ = '.'; | |
1150 | *rel_buf_p++ = CONNECTCHAR; | |
1151 | } | |
1152 | ||
1153 | /* Then tack on the unmatched part of the desired file's name. */ | |
1154 | ||
1155 | do | |
1156 | { | |
1157 | if (rel_buffer + filename_len <= rel_buf_p) | |
1158 | { | |
1159 | cstring_free (rel_buffer); | |
1160 | return cstring_copy (filename); | |
1161 | } | |
1162 | } /*@-usereleased@*/ | |
1163 | while ((*rel_buf_p++ = *path_p++) != '\0') ; | |
1164 | ||
1165 | ||
1166 | /*@=usereleased@*/ /* Splint limitation: shouldn't need these */ | |
1167 | --rel_buf_p; | |
1168 | ||
1169 | if (osd_isConnectChar (*(rel_buf_p-1))) | |
1170 | *--rel_buf_p = '\0'; | |
1171 | ||
1172 | /* fprintf (stderr, "Returning buffer: %s [%p]\n", rel_buffer, rel_buffer); */ | |
1173 | return rel_buffer; | |
1174 | } | |
1175 | /*@noaccess cstring@*/ | |
1176 | # else | |
1177 | return cstring_copy (filename); | |
1178 | # endif | |
1179 | } | |
1180 | ||
1181 | cstring osd_getCurrentDirectory () | |
1182 | { | |
1183 | # if defined(MSDOS) || defined(OS2) | |
1184 | return cstring_makeLiteralTemp (""); | |
1185 | # else | |
1186 | return cstring_makeLiteralTemp ("./"); | |
1187 | # endif | |
1188 | } | |
1189 | ||
1190 | ||
1191 |