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616915dd | 1 | /* |
2 | ** LCLint - annotation-assisted static program checker | |
3 | ** Copyright (C) 1994-2000 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 lclint: lclint-request@cs.virginia.edu | |
21 | ** To report a bug: lclint-bug@cs.virginia.edu | |
22 | ** For more information: http://lclint.cs.virginia.edu | |
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 | */ | |
41 | ||
42 | /*@-allmacros*/ | |
43 | /*@ignore@*/ | |
44 | # include <sys/types.h> | |
45 | # include <sys/stat.h> | |
46 | /* Fix suggested by Lars Rasmussen */ | |
47 | # include <errno.h> | |
48 | /*@end@*/ | |
49 | /*@=allmacros*/ | |
50 | # include "lclintMacros.nf" | |
51 | # include "basic.h" | |
52 | # include "osd.h" | |
53 | # include "portab.h" | |
54 | ||
55 | /* from stat.h */ | |
56 | /*@ignore@*/ | |
57 | extern int stat (const char *, /*@out@*/ struct stat *); | |
58 | /*@end@*/ | |
59 | ||
60 | static bool osd_executableFileExists (char *); | |
61 | ||
62 | static bool nextdir (char **p_current_dir, /*@out@*/ char **p_dir, | |
63 | /*@out@*/ size_t *p_len); | |
64 | ||
65 | extern char *LSLRootName (char *filespec) | |
66 | { | |
67 | char *result, *startName, *tail; | |
68 | size_t nameLength; | |
69 | ||
70 | tail = strrchr (filespec, CONNECTCHAR); | |
71 | startName = (tail == NULL ? filespec : &tail[1]); | |
72 | tail = strrchr (startName, '.'); | |
73 | nameLength = (tail == NULL ? strlen (startName) | |
74 | : size_fromInt (tail - startName)); | |
75 | result = dmalloc (nameLength + 1); | |
76 | strncpy (result, startName, nameLength); | |
77 | result[(int) nameLength] = '\0'; | |
78 | return result; | |
79 | } | |
80 | ||
81 | extern /*@observer@*/ char * | |
82 | osd_getEnvironment (char *env, /*@returned@*/ char *def) | |
83 | { | |
84 | char *ret = osd_getEnvironmentVariable (env); | |
85 | ||
86 | if (ret == NULL) | |
87 | { | |
88 | return def; | |
89 | } | |
90 | else | |
91 | { | |
92 | return ret; | |
93 | } | |
94 | } | |
95 | ||
96 | ||
97 | /* | |
98 | **++ | |
99 | ** FUNCTIONAL DESCRIPTION: | |
100 | ** | |
101 | ** This function attempts to locate a file in a search list. On VMS, it | |
102 | ** just concatinates the path and file names, and then lets RMS do the | |
103 | ** searching. On Ultrix, it searches for the file on the path. | |
104 | ** | |
105 | ** FORMAL PARAMETERS: | |
106 | ** | |
107 | ** path: search path where to look for the file. | |
108 | ** file: name of file to search for. | |
109 | ** returnPath: if a file is found, this is where the concatenated | |
110 | ** directory and file name are returned. | |
111 | ** | |
112 | ** RETURN VALUE: | |
113 | ** | |
114 | ** OSD_FILEFOUND: the file was found on the search list. | |
115 | ** OSD_FILENOTFOUND the file was not found. | |
116 | ** OSD_PATHTOOLONG the concatenated directory and file name are too | |
117 | ** long. | |
118 | ** | |
119 | ** SIDE EFFECTS: | |
120 | ** | |
121 | ** None | |
122 | ** | |
123 | ** PRECONDITIONS: | |
124 | ** | |
125 | ** Requires that parameters, path and file, are valid C strings. | |
126 | ** | |
127 | ** | |
128 | **-- | |
129 | */ | |
130 | ||
131 | extern /*@null@*/ /*@observer@*/ char * | |
132 | osd_getHomeDir () | |
133 | { | |
134 | /* Would something different be better for windows? */ | |
135 | return (osd_getEnvironmentVariable ("HOME")); | |
136 | } | |
137 | ||
138 | filestatus osd_findOnLarchPath (char *file, char **returnPath) | |
139 | { | |
140 | return (osd_getPath (cstring_toCharsSafe (context_getLarchPath ()), file, returnPath)); | |
141 | } | |
142 | ||
143 | extern filestatus | |
144 | osd_getPath (char *path, char *file, char **returnPath) | |
145 | { | |
146 | char *fullPath; | |
147 | char *dirPtr; | |
148 | size_t dirLen; | |
149 | char aPath[MAXPATHLEN]; | |
150 | filestatus rVal = OSD_FILENOTFOUND; /* assume file not found. */ | |
151 | ||
152 | fullPath = path; | |
153 | ||
154 | if (fullPath == NULL || | |
155 | # if defined(OS2) || defined(MSDOS) || defined(WIN32) | |
156 | /* under OS/2 and MSDOS the includePath may be empty, if so, search | |
157 | * the current directory. */ | |
158 | *fullPath == '\0' || | |
159 | (*file == CONNECTCHAR || (file[0] != '\0' && file[1] == ':'))) | |
160 | # else | |
161 | (*file == CONNECTCHAR)) | |
162 | # endif | |
163 | { | |
164 | /* No path specified. Look for it in the current directory. */ | |
165 | ||
166 | strcpy (&aPath[0], file); | |
167 | ||
168 | if (osd_fileExists (&aPath[0])) | |
169 | { | |
170 | rVal = OSD_FILEFOUND; | |
171 | *returnPath = dmalloc (strlen (&aPath[0]) + 1); | |
172 | strcpy (*returnPath, &aPath[0]); | |
173 | } | |
174 | } | |
175 | else | |
176 | { | |
177 | /* Path specified. Loop through directories in path looking for the */ | |
178 | /* first occurrence of the file. */ | |
179 | ||
180 | while (nextdir (&fullPath, &dirPtr, &dirLen) && | |
181 | rVal == OSD_FILENOTFOUND) | |
182 | { | |
183 | if ((dirLen + strlen (file) + 2) <= MAXPATHLEN) | |
184 | { | |
185 | /* Cat directory and filename, and see if file exists. */ | |
186 | strncpy (&aPath[0], dirPtr, dirLen); | |
187 | strcpy (&aPath[0] + dirLen, ""); /* Null terminate aPath. */ | |
188 | strcat (&aPath[0], CONNECTSTR); | |
189 | strcat (&aPath[0], file); | |
190 | ||
191 | if (osd_fileExists (&aPath[0])) | |
192 | { | |
193 | rVal = OSD_FILEFOUND; | |
194 | *returnPath = (char *) dmalloc (strlen (&aPath[0]) + 1); | |
195 | strcpy (*returnPath, &aPath[0]); | |
196 | } | |
197 | } | |
198 | else | |
199 | { | |
200 | rVal = OSD_PATHTOOLONG; | |
201 | } | |
202 | } | |
203 | } | |
204 | ||
205 | return rVal; | |
206 | } | |
207 | ||
208 | extern filestatus | |
209 | osd_getExePath (char *path, char *file, char **returnPath) | |
210 | { | |
211 | char *fullPath; | |
212 | char *dirPtr; | |
213 | size_t dirLen; | |
214 | char aPath[MAXPATHLEN]; | |
215 | filestatus rVal = OSD_FILENOTFOUND; /* assume file not found. */ | |
216 | ||
217 | fullPath = osd_getEnvironmentVariable (path); | |
218 | ||
219 | if (fullPath == NULL) | |
220 | { | |
221 | /* No path specified. Look for it in the current directory. */ | |
222 | ||
223 | strcpy (&aPath[0], file); | |
224 | ||
225 | if (osd_fileExists (&aPath[0])) | |
226 | { | |
227 | rVal = OSD_FILEFOUND; | |
228 | *returnPath = dmalloc (strlen (&aPath[0]) + 1); | |
229 | strcpy (*returnPath, &aPath[0]); | |
230 | } | |
231 | } | |
232 | else | |
233 | { | |
234 | /* | |
235 | ** Path specified. Loop through directories in path looking | |
236 | ** for the first occurrence of the file. | |
237 | */ | |
238 | ||
239 | while (nextdir (&fullPath, &dirPtr, &dirLen) && | |
240 | rVal == OSD_FILENOTFOUND) | |
241 | { | |
242 | if ((dirLen + strlen (file) + 2) <= MAXPATHLEN) | |
243 | { | |
244 | /* Cat directory and filename, and see if file exists. */ | |
245 | strncpy (&aPath[0], dirPtr, dirLen); | |
246 | strcpy (&aPath[0] + dirLen, ""); /* Null terminate aPath. */ | |
247 | strcat (&aPath[0], CONNECTSTR); | |
248 | strcat (&aPath[0], file); | |
249 | ||
250 | if (osd_executableFileExists (&aPath[0])) | |
251 | { | |
252 | rVal = OSD_FILEFOUND; | |
253 | *returnPath = dmalloc (strlen (&aPath[0]) + 1); | |
254 | strcpy (*returnPath, &aPath[0]); | |
255 | } | |
256 | } | |
257 | else | |
258 | { | |
259 | rVal = OSD_PATHTOOLONG; | |
260 | } | |
261 | } | |
262 | } | |
263 | ||
264 | return rVal; | |
265 | } | |
266 | ||
267 | bool | |
268 | osd_fileExists (char *filespec) | |
269 | { | |
270 | # ifdef UNIX | |
271 | struct stat buf; | |
272 | return (stat (filespec, &buf) == 0); | |
273 | # else | |
274 | # if defined (WIN32) || defined (OS2) | |
275 | FILE *test = fopen (filespec, "r"); | |
276 | if (test != NULL) | |
277 | { | |
278 | (void) fclose (test); | |
279 | return TRUE; | |
280 | } | |
281 | else | |
282 | { | |
283 | return FALSE; | |
284 | } | |
285 | # else | |
286 | return FALSE; | |
287 | # endif | |
288 | # endif | |
289 | } | |
290 | ||
291 | bool | |
292 | osd_executableFileExists (/*@unused@*/ char *filespec) | |
293 | { | |
294 | # ifdef UNIX | |
295 | struct stat buf; | |
296 | # if defined(__IBMC__) && defined(OS2) | |
297 | # define S_IFMT (unsigned short)0xFFFF | |
298 | # endif | |
299 | if (stat (filespec, &buf) == 0) | |
300 | { | |
301 | /* mask by file type */ | |
302 | /*@-unrecog@*/ /* S_IFMT is not defined */ | |
303 | if ((buf.st_mode & S_IFMT) != S_IFDIR /*@=unrecog@*/) /* not a directory */ | |
304 | { | |
305 | /* as long as it is an executable file */ | |
306 | # if defined(__IBMC__) && defined(OS2) | |
307 | int com_or_exe_pos = strlen( filespec) - 4; | |
308 | return stricmp( &filespec[com_or_exe_pos], ".exe") == 0 | |
309 | || stricmp( &filespec[com_or_exe_pos], ".com") == 0 | |
310 | || stricmp( &filespec[com_or_exe_pos], ".bat") == 0 | |
311 | || stricmp( &filespec[com_or_exe_pos], ".cmd") == 0; | |
312 | # else | |
313 | return (((buf.st_mode & S_IXUSR) | |
314 | # if !defined(MSDOS) && !defined(OS2) | |
315 | | (buf.st_mode & S_IXGRP) | | |
316 | (buf.st_mode & S_IXOTH) | |
317 | # endif | |
318 | ) != 0); | |
319 | # endif | |
320 | } | |
321 | } | |
322 | ||
323 | # endif | |
324 | return (FALSE); | |
325 | ||
326 | } | |
327 | ||
328 | /* | |
329 | **++ | |
330 | ** FUNCTIONAL DESCRIPTION: | |
331 | ** | |
332 | ** Find the next directory from a directory path. | |
333 | ** | |
334 | ** FORMAL PARAMETERS: | |
335 | ** | |
336 | ** char ** current_dir : | |
337 | ** Points to the current position in the path string. The first time | |
338 | ** you call this routine, this should point to the first character of | |
339 | ** the path. On return, this will be updated to point to the | |
340 | ** terminating \0 or : of the first directory found. You can then pass | |
341 | ** it unchanged for subsequent calls; this routine will correctly skip | |
342 | ** over the :. | |
343 | ** | |
344 | ** char ** dir : | |
345 | ** On exit, this will point to the first character of the directory | |
346 | ** that was found. This will be a pointer directly into the client's | |
347 | ** path string. | |
348 | ** | |
349 | ** unsigned int * len : | |
350 | ** On exit, this will contain the length of the directory that was | |
351 | ** found, not counting any terminating \0 or :. If no directory was | |
352 | ** found, this will be 0. | |
353 | ** | |
354 | ** RETURN VALUE: | |
355 | ** TRUE if we found another directory. | |
356 | ** FALSE otherwise. | |
357 | ** | |
358 | ** DESIGN: | |
359 | ** | |
360 | ** We return a pointer and length, rather than a string, because of a) | |
361 | ** historical reasons; and b) this avoids having to allocate storage. | |
362 | ** | |
363 | ** | |
364 | ** | |
365 | **-- | |
366 | */ | |
367 | ||
368 | static bool | |
369 | nextdir (d_char *current_dir, d_char *dir, size_t *len) | |
370 | { | |
371 | char *tchar; | |
372 | ||
373 | if (**current_dir == '\0') | |
374 | { | |
375 | *len = 0; | |
376 | return FALSE; | |
377 | } | |
378 | ||
379 | *dir = (**current_dir == SEPCHAR ? *current_dir + 1 : *current_dir); | |
380 | ||
381 | /* Find next ':' or end of string */ | |
382 | for (tchar = *dir; *tchar != '\0' && *tchar != SEPCHAR; tchar++) | |
383 | { | |
384 | ; | |
385 | } | |
386 | ||
387 | *current_dir = tchar; | |
388 | *len = size_fromInt (tchar - *dir); | |
389 | return TRUE; | |
390 | } | |
391 | ||
392 | /*@observer@*/ /*@null@*/ char *osd_getEnvironmentVariable (char *var) | |
393 | { | |
394 | # ifdef UNIX | |
395 | return getenv (var); | |
396 | # else | |
397 | # if defined(OS2) || defined(MSDOS) | |
398 | return getenv (var); | |
399 | # else | |
400 | # if defined(WIN32) | |
401 | return getenv (var); | |
402 | # else | |
403 | return NULL; | |
404 | # endif | |
405 | # endif | |
406 | # endif | |
407 | } | |
408 | ||
409 | # ifndef NOLCL | |
410 | ||
411 | # ifdef WIN32 | |
412 | extern /*@external@*/ int _flushall (void) /*@modifies fileSystem@*/ ; | |
413 | # endif | |
414 | ||
415 | # ifndef system | |
416 | extern /*@external@*/ int system (const char *) /*@modifies fileSystem@*/ ; | |
417 | # endif | |
418 | int osd_system (const char *cmd) | |
419 | { | |
420 | int res; | |
421 | /* system ("printenv"); */ | |
422 | # ifdef WIN32 | |
423 | (void) _flushall (); | |
424 | # endif | |
425 | ||
426 | res = system (cmd); | |
427 | return res; | |
428 | } | |
429 | # endif | |
430 | ||
431 | # ifndef unlink | |
432 | /*@-redecl@*/ | |
433 | extern /*@external@*/ int unlink (const char *) /*@modifies fileSystem@*/ ; | |
434 | /*@=redecl@*/ | |
435 | # endif | |
436 | ||
437 | int osd_unlink (const char *fname) | |
438 | { | |
439 | int res; | |
440 | ||
441 | res = unlink (fname); | |
442 | ||
443 | if (res != 0) | |
444 | { | |
445 | llcontbug (message ("Cannot remove temporary file: %s (%s)", | |
446 | cstring_fromChars (fname), | |
447 | cstring_fromChars (strerror (errno)))); | |
448 | } | |
449 | ||
450 | return res; | |
451 | } | |
452 | ||
453 | # if defined (WIN32) || (defined(OS2) && defined(__IBMC__)) | |
454 | # include <process.h> | |
455 | # elif defined OS2 | |
456 | # include <unistd.h> | |
457 | # endif | |
458 | ||
459 | # if defined (WIN32) || defined (OS2) && defined (__IBMC__) | |
460 | int | |
461 | # else | |
462 | int /* pid_t */ | |
463 | # endif | |
464 | osd_getPid () | |
465 | { | |
466 | # if defined (WIN32) || defined (OS2) && defined (__IBMC__) | |
467 | int pid = _getpid (); | |
468 | # else | |
2934b455 | 469 | pid_t pid = getpid (); |
616915dd | 470 | # endif |
471 | ||
472 | return (int) pid; | |
473 | } | |
474 | ||
475 | cstring osd_fixDefine (char *x) | |
476 | { | |
477 | # ifdef UNIX | |
478 | if (strchr (x, '\'') != NULL) { | |
479 | /* | |
480 | ** If there is a single quote, check for <ident>='<string>' and | |
481 | ** produce <ident>=<string> | |
482 | */ | |
483 | ||
484 | char *eqs = strchr (x, '='); | |
485 | ||
486 | if (eqs != NULL) { | |
487 | if (eqs[1] == '\'') { | |
488 | char *endqu = strrchr (x, '\''); | |
489 | ||
490 | if (endqu != NULL) { | |
491 | if (*(endqu - 1) != '\\') { | |
492 | if (*(endqu + 1) == '\0') { | |
493 | cstring res; | |
494 | cstring def; | |
495 | ||
496 | *endqu = '\0'; | |
497 | def = cstring_fromChars (eqs + 2); | |
498 | eqs[1] = '\0'; | |
499 | res = cstring_concat (cstring_fromChars (x), def); | |
500 | return res; | |
501 | } | |
502 | } | |
503 | } | |
504 | } | |
505 | } | |
506 | } | |
507 | ||
508 | # endif | |
509 | ||
510 | return cstring_fromCharsNew (x); | |
511 | } | |
512 | ||
513 | bool osd_fileIsReadable (char *f) | |
514 | { | |
515 | FILE *fl = fopen (f, "r"); | |
516 | ||
517 | if (fl != (FILE *) 0) | |
518 | { | |
519 | check (fclose (fl) == 0); | |
520 | return (TRUE); | |
521 | } | |
522 | else | |
523 | { | |
524 | return (FALSE); | |
525 | } | |
526 | } | |
527 | ||
528 | bool osd_isConnectChar (char c) | |
529 | { | |
530 | if (c == CONNECTCHAR) | |
531 | { | |
532 | return TRUE; | |
533 | } | |
534 | ||
535 | # ifdef HASALTCONNECTCHAR | |
536 | if (c == ALTCONNECTCHAR) | |
537 | { | |
538 | return TRUE; | |
539 | } | |
540 | # endif | |
541 | ||
542 | return FALSE; | |
543 | } | |
544 |