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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 | ** lcllib.c | |
26 | ** | |
27 | ** routines for loading and creating library files | |
28 | ** | |
29 | ** this is a brute-force implementation, a more efficient | |
30 | ** representation should be designed. | |
31 | ** | |
32 | */ | |
33 | ||
34 | /* | |
35 | * Herbert 02/17/2002: | |
36 | * - fixed the recognition of Posix headers for OS/2 | |
37 | */ | |
38 | ||
39 | # include "splintMacros.nf" | |
40 | # include "basic.h" | |
41 | # include "osd.h" | |
42 | # include "version.h" | |
43 | ||
44 | # include "gram.h" | |
45 | # include "lclscan.h" | |
46 | ||
47 | # include "lcllib.h" | |
48 | # include "llmain.h" | |
49 | ||
50 | /*@-incondefs@*/ /*@-redecl@*/ | |
51 | extern /*:open:*/ /*@dependent@*/ FILE *yyin; | |
52 | /*@=incondefs@*/ /*@=redecl@*/ | |
53 | ||
54 | /*@constant int NUMLIBS; @*/ | |
55 | # define NUMLIBS 25 | |
56 | ||
57 | /*@constant int NUMPOSIXLIBS; @*/ | |
58 | # define NUMPOSIXLIBS 18 | |
59 | ||
60 | static ob_mstring posixlibs[NUMPOSIXLIBS] = | |
61 | { | |
62 | "dirent", | |
63 | "fcntl", | |
64 | "grp", | |
65 | "pwd", | |
66 | "regex", | |
67 | "sys/stat", | |
68 | "sys/times", | |
69 | "sys/types", | |
70 | "netdb", /* unix */ | |
71 | "netinet/in", /* unix */ | |
72 | "sys/resource", /* unix */ | |
73 | "sys/socket", /* not posix */ | |
74 | "sys/syslog", /* not posix */ | |
75 | "sys/utsname", | |
76 | "sys/wait", | |
77 | "termios", | |
78 | "unistd", | |
79 | "utime" | |
80 | } ; | |
81 | ||
82 | static ob_mstring stdlibs[NUMLIBS] = | |
83 | { | |
84 | "assert", | |
85 | "complex" | |
86 | "ctype", | |
87 | "errno", | |
88 | "fenv", | |
89 | "float", | |
90 | "inttypes", | |
91 | "iso646", | |
92 | "limits", | |
93 | "locale", | |
94 | "math", | |
95 | "setjmp", | |
96 | "signal", | |
97 | "stdarg", | |
98 | "stdbool", | |
99 | "stddef", | |
100 | "stdint", | |
101 | "stdio", | |
102 | "stdlib", | |
103 | "string", | |
104 | "strings", /* some systems use this...they shouldn't */ | |
105 | "tgmath", | |
106 | "time", | |
107 | "wchar", | |
108 | "wctype" | |
109 | } ; | |
110 | ||
111 | static bool loadLCDFile (FILE * p_f, cstring p_name); | |
112 | ||
113 | bool | |
114 | lcllib_isSkipHeader (cstring sname) | |
115 | { | |
116 | int i; | |
117 | bool posixlib = FALSE; | |
118 | char *libname; | |
119 | char *matchname; | |
120 | cstring xname; | |
121 | ||
122 | llassert (cstring_isDefined (sname)); | |
123 | xname = fileLib_withoutExtension (sname, cstring_makeLiteralTemp (".h")); | |
124 | ||
125 | DPRINTF (("Include? %s", sname)); | |
126 | ||
127 | /*@access cstring@*/ | |
128 | llassert (cstring_isDefined (xname)); | |
129 | # if defined (OS2) | |
130 | { | |
131 | /* Posixlibs use forward slashes, so we use them here, too */ | |
132 | cstring_replaceAll (xname, '\\', '/'); | |
133 | libname = strrchr (xname, '/'); | |
134 | DPRINTF (("libname: %s", libname)); | |
135 | } | |
136 | # else | |
137 | libname = strrchr (xname, CONNECTCHAR); | |
138 | # endif | |
139 | matchname = libname; | |
140 | ||
141 | if (libname == NULL) | |
142 | { | |
143 | libname = xname; | |
144 | } | |
145 | else | |
146 | { | |
147 | libname++; | |
148 | /*@-branchstate@*/ | |
149 | } | |
150 | /*@=branchstate@*/ | |
151 | ||
152 | if (mstring_equal (libname, "varargs")) | |
153 | { | |
154 | fileloc tmp = fileloc_makePreprocPrevious (g_currentloc); | |
155 | ||
156 | voptgenerror | |
157 | (FLG_USEVARARGS, | |
158 | message ("Include file <%s.h> is inconsistent with " | |
159 | "ANSI library (should use <stdarg.h>)", | |
160 | cstring_fromChars (libname)), | |
161 | tmp); | |
162 | ||
163 | fileloc_free (tmp); | |
164 | cstring_free (xname); | |
165 | return TRUE; | |
166 | } | |
167 | ||
168 | if (context_getFlag (FLG_SKIPISOHEADERS) | |
169 | && context_usingAnsiLibrary ()) | |
170 | { | |
171 | for (i = 0; i < NUMLIBS; i++) | |
172 | { | |
173 | if (mstring_equal (libname, stdlibs[i])) | |
174 | { | |
175 | sfree (xname); | |
176 | return TRUE; | |
177 | } | |
178 | } | |
179 | } | |
180 | ||
181 | for (i = 0; i < NUMPOSIXLIBS; i++) | |
182 | { | |
183 | if (strchr (posixlibs[i], CONNECTCHAR) != NULL | |
184 | # if defined (OS2) | |
185 | || strchr (posixlibs[i], ALTCONNECTCHAR) != NULL | |
186 | # endif | |
187 | ) | |
188 | { | |
189 | char *ptr; | |
190 | ||
191 | DPRINTF (("xname: %s, posix: %s", xname, posixlibs[i])); | |
192 | if ((ptr = strstr (xname, posixlibs[i])) != NULL) | |
193 | { | |
194 | if (ptr[strlen (posixlibs[i])] == '\0') | |
195 | { | |
196 | posixlib = TRUE; | |
197 | matchname = ptr; | |
198 | break; | |
199 | } | |
200 | else | |
201 | { | |
202 | ; /* no match */ | |
203 | } | |
204 | } | |
205 | } | |
206 | else | |
207 | { | |
208 | if (mstring_equal (libname, posixlibs[i])) | |
209 | { | |
210 | posixlib = TRUE; | |
211 | matchname = libname; | |
212 | break; | |
213 | } | |
214 | /*@-branchstate@*/ | |
215 | } | |
216 | } /*@=branchstate@*/ | |
217 | ||
218 | if (posixlib) | |
219 | { | |
220 | if (context_usingPosixLibrary ()) | |
221 | { | |
222 | if (context_getFlag (FLG_SKIPPOSIXHEADERS)) | |
223 | { | |
224 | cstring_free (xname); | |
225 | /*@-nullstate@*/ | |
226 | return TRUE; | |
227 | /*@=nullstate@*/ | |
228 | ||
229 | /* evans 2002-03-02: | |
230 | the returned reference is possibly null, | |
231 | but this should not change the null state of the parameter | |
232 | */ | |
233 | } | |
234 | } | |
235 | else | |
236 | { | |
237 | fileloc tmp = fileloc_makePreprocPrevious (g_currentloc); | |
238 | ||
239 | voptgenerror | |
240 | (FLG_WARNPOSIX, | |
241 | message ("Include file <%s.h> matches the name of a " | |
242 | "POSIX library, but the POSIX library is " | |
243 | "not being used. Consider using +posixlib " | |
244 | "or +posixstrictlib to select the POSIX " | |
245 | "library, or -warnposix " | |
246 | "to suppress this message.", | |
247 | cstring_fromChars (matchname)), | |
248 | tmp); | |
249 | ||
250 | fileloc_free (tmp); | |
251 | } | |
252 | } | |
253 | ||
254 | cstring_free (xname); | |
255 | /*@noaccess cstring@*/ | |
256 | /*@-nullstate@*/ /* same problem as above */ | |
257 | return FALSE; | |
258 | /*@=nullstate@*/ | |
259 | } | |
260 | ||
261 | static void printDot (void) | |
262 | { | |
263 | displayScanContinue (cstring_makeLiteralTemp (".")); | |
264 | } | |
265 | ||
266 | void | |
267 | dumpState (cstring cfname) | |
268 | { | |
269 | FILE *f; | |
270 | cstring fname = fileLib_addExtension (cfname, cstring_makeLiteralTemp (DUMP_SUFFIX)); | |
271 | ||
272 | f = fileTable_openWriteFile (context_fileTable (), fname); | |
273 | ||
274 | displayScanOpen (message ("Dumping to %s ", fname)); | |
275 | ||
276 | if (f == NULL) | |
277 | { | |
278 | lldiagmsg (message ("Cannot open dump file for writing: %s", fname)); | |
279 | } | |
280 | else | |
281 | { | |
282 | /* | |
283 | ** sequence is convulted --- must call usymtab_prepareDump before | |
284 | ** dumping ctype table to convert type uid's | |
285 | */ | |
286 | ||
287 | printDot (); | |
288 | ||
289 | /* | |
290 | DPRINTF (("Before prepare dump:")); | |
291 | ctype_printTable (); | |
292 | DPRINTF (("Preparing dump...")); | |
293 | */ | |
294 | ||
295 | usymtab_prepareDump (); | |
296 | ||
297 | /* | |
298 | ** Be careful, these lines must match loadLCDFile checking. | |
299 | */ | |
300 | ||
301 | fprintf (f, "%s %s\n", LIBRARY_MARKER, cstring_toCharsSafe (fname)); | |
302 | fprintf (f, ";;Splint %f\n", SPLINT_LIBVERSION); | |
303 | fprintf (f, ";;lib:%d\n", (int) context_getLibrary ()); | |
304 | fprintf (f, ";;ctTable\n"); | |
305 | ||
306 | DPRINTF (("Dumping types...")); | |
307 | printDot (); | |
308 | ctype_dumpTable (f); | |
309 | printDot (); | |
310 | ||
311 | DPRINTF (("Dumping type sets...")); | |
312 | fprintf (f, ";;tistable\n"); | |
313 | typeIdSet_dumpTable (f); | |
314 | printDot (); | |
315 | ||
316 | DPRINTF (("Dumping usymtab...")); | |
317 | fprintf (f, ";;symTable\n"); | |
318 | usymtab_dump (f); | |
319 | printDot (); | |
320 | ||
321 | DPRINTF (("Dumping modules...")); | |
322 | fprintf (f, ";; Modules access\n"); | |
323 | context_dumpModuleAccess (f); | |
324 | fprintf (f, ";;End\n"); | |
325 | check (fileTable_closeFile (context_fileTable (), f)); | |
326 | } | |
327 | ||
328 | displayScanClose (); | |
329 | cstring_free (fname); | |
330 | } | |
331 | ||
332 | bool | |
333 | loadStandardState () | |
334 | { | |
335 | cstring fpath; | |
336 | FILE *stdlib; | |
337 | bool result; | |
338 | cstring libname = fileLib_addExtension (context_selectedLibrary (), | |
339 | cstring_makeLiteralTemp (DUMP_SUFFIX)); | |
340 | ||
341 | if (osd_findOnLarchPath (libname, &fpath) != OSD_FILEFOUND) | |
342 | { | |
343 | lldiagmsg (message ("Cannot find %sstandard library: %s", | |
344 | cstring_makeLiteralTemp | |
345 | (context_getFlag (FLG_STRICTLIB) ? "strict " | |
346 | : (context_getFlag (FLG_UNIXLIB) ? "unix " : "")), | |
347 | libname)); | |
348 | lldiagmsg (cstring_makeLiteral (" Check LARCH_PATH environment variable.")); | |
349 | result = FALSE; | |
350 | } | |
351 | else | |
352 | { | |
353 | stdlib = fileTable_openReadFile (context_fileTable (), fpath); | |
354 | ||
355 | if (stdlib == NULL) | |
356 | { | |
357 | lldiagmsg (message ("Cannot read standard library: %s", | |
358 | fpath)); | |
359 | lldiagmsg (cstring_makeLiteral (" Check LARCH_PATH environment variable.")); | |
360 | ||
361 | result = FALSE; | |
362 | } | |
363 | else | |
364 | { | |
365 | if (context_getFlag (FLG_WHICHLIB)) | |
366 | { | |
367 | char *t = mstring_create (MAX_NAME_LENGTH); | |
368 | char *ot = t; | |
369 | ||
370 | if ((t = reader_readLine (stdlib, t, MAX_NAME_LENGTH)) == NULL) | |
371 | { | |
372 | llfatalerror (cstring_makeLiteral ("Standard library format invalid")); | |
373 | } | |
374 | ||
375 | if ((t = reader_readLine (stdlib, t, MAX_NAME_LENGTH)) != NULL) | |
376 | { | |
377 | if (*t == ';' && *(t + 1) == ';') | |
378 | { | |
379 | t += 2; | |
380 | } | |
381 | } | |
382 | ||
383 | if (t == NULL) | |
384 | { | |
385 | lldiagmsg (message ("Standard library: %s <cannot read creation information>", | |
386 | fpath)); | |
387 | } | |
388 | else | |
389 | { | |
390 | char *tt; | |
391 | ||
392 | tt = strrchr (t, '\n'); | |
393 | if (tt != NULL) | |
394 | *tt = '\0'; | |
395 | ||
396 | lldiagmsg (message ("Standard library: %s", fpath)); | |
397 | lldiagmsg (message (" (created using %s)", cstring_fromChars (t))); | |
398 | } | |
399 | ||
400 | sfree (ot); | |
401 | ||
402 | check (fileTable_closeFile (context_fileTable (), stdlib)); | |
403 | stdlib = fileTable_openReadFile (context_fileTable (), fpath); | |
404 | } | |
405 | ||
406 | llassert (stdlib != NULL); | |
407 | ||
408 | fileloc_reallyFree (g_currentloc); | |
409 | g_currentloc = fileloc_createLib (libname); | |
410 | ||
411 | DPRINTF (("Loading: %s", fpath)); | |
412 | ||
413 | displayScanOpen (message ("loading standard library %s ", fpath)); | |
414 | result = loadLCDFile (stdlib, fpath); | |
415 | displayScanClose (); | |
416 | ||
417 | check (fileTable_closeFile (context_fileTable (), stdlib)); | |
418 | } | |
419 | } | |
420 | ||
421 | cstring_free (libname); | |
422 | return result; | |
423 | } | |
424 | ||
425 | /*@constant int BUFLEN;@*/ | |
426 | # define BUFLEN 128 | |
427 | ||
428 | static bool | |
429 | loadLCDFile (FILE *f, cstring name) | |
430 | { | |
431 | char buf[BUFLEN]; | |
432 | ||
433 | /* | |
434 | ** Check version. Should be >= SPLINT_LIBVERSION | |
435 | */ | |
436 | ||
437 | if (reader_readLine (f, buf, BUFLEN) == NULL | |
438 | || !mstring_equalPrefix (buf, LIBRARY_MARKER)) | |
439 | { | |
440 | loadllmsg (message ("Load library %s is not in Splint library format. Attempting " | |
441 | "to continue without library.", name)); | |
442 | return FALSE; | |
443 | } | |
444 | ||
445 | if (reader_readLine (f, buf, BUFLEN) != NULL) | |
446 | { | |
447 | if (!mstring_equalPrefix (buf, ";;")) | |
448 | { | |
449 | loadllmsg (message ("Load library %s is not in Splint library format. Attempting " | |
450 | "to continue without library.", name)); | |
451 | return FALSE; | |
452 | } | |
453 | else if (mstring_equalPrefix (buf, ";;ctTable")) | |
454 | { | |
455 | loadllmsg (message ("Load library %s is in obsolete Splint library format. Attempting " | |
456 | "to continue anyway, but results may be incorrect. Rebuild " | |
457 | "the library with this version of splint.", | |
458 | name)); | |
459 | } | |
460 | else | |
461 | { | |
462 | float version = 0.0; | |
463 | ||
464 | if (sscanf (buf, ";;Splint %f", &version) != 1 | |
465 | && (sscanf (buf, ";;LCLint %f", &version) != 1)) | |
466 | { | |
467 | loadllmsg (message ("Load library %s is not in Splint library format (missing version " | |
468 | "number). Attempting " | |
469 | "to continue without library.", name)); | |
470 | return FALSE; | |
471 | } | |
472 | else | |
473 | { | |
474 | if ((SPLINT_LIBVERSION - version) >= FLT_EPSILON) | |
475 | { | |
476 | cstring vname; | |
477 | char *nl = strchr (buf, '\n'); | |
478 | ||
479 | *nl = '\0'; | |
480 | ||
481 | vname = cstring_fromChars (buf + 9); | |
482 | ||
483 | loadllmsg (message ("Load library %s is in obsolete Splint library " | |
484 | "format (version %f (%s), expecting version %f). Attempting " | |
485 | "to continue anyway, but results may be incorrect. Rebuild " | |
486 | "the library with this version of splint.", | |
487 | name, | |
488 | version, | |
489 | vname, | |
490 | SPLINT_LIBVERSION)); | |
491 | } | |
492 | else | |
493 | { | |
494 | if (reader_readLine (f, buf, BUFLEN) == NULL) | |
495 | { | |
496 | loadllmsg (message ("Load library %s is not in Splint library " | |
497 | "format (missing library code). Attempting " | |
498 | "to continue without library.", name)); | |
499 | return FALSE; | |
500 | } | |
501 | else | |
502 | { | |
503 | int lib; | |
504 | ||
505 | if (sscanf (buf, ";;lib:%d", &lib) != 1) | |
506 | { | |
507 | loadllmsg (message ("Load library %s is not in Splint library " | |
508 | "format (missing library code). Attempting " | |
509 | "to continue without library.", name)); | |
510 | return FALSE; | |
511 | } | |
512 | else | |
513 | { | |
514 | flagcode code = (flagcode) lib; | |
515 | ||
516 | if (flagcode_isLibraryFlag (code)) | |
517 | { | |
518 | if (context_doMerge ()) | |
519 | { | |
520 | context_setLibrary (code); | |
521 | } | |
522 | } | |
523 | else | |
524 | { | |
525 | loadllmsg (message ("Load library %s has invalid library code (%s). " | |
526 | "Attempting to continue without library.", | |
527 | name, | |
528 | flagcode_unparse (code))); | |
529 | ||
530 | return FALSE; | |
531 | } | |
532 | } | |
533 | } | |
534 | } | |
535 | } | |
536 | } | |
537 | } | |
538 | else | |
539 | { | |
540 | loadllmsg (message ("Load library %s is not in Splint library format (missing lines). " | |
541 | "Attempting to continue without library.", name)); | |
542 | return FALSE; | |
543 | } | |
544 | ||
545 | ctype_loadTable (f); | |
546 | printDot (); | |
547 | ||
548 | typeIdSet_loadTable (f); | |
549 | printDot (); | |
550 | ||
551 | usymtab_load (f); | |
552 | printDot (); | |
553 | ||
554 | context_loadModuleAccess (f); | |
555 | printDot (); | |
556 | ||
557 | return TRUE; | |
558 | } | |
559 | ||
560 | /* | |
561 | ** load state from file created by dumpState | |
562 | */ | |
563 | ||
564 | void | |
565 | loadState (cstring cfname) | |
566 | { | |
567 | FILE *f; | |
568 | cstring fname = fileLib_addExtension (cfname, cstring_makeLiteralTemp (DUMP_SUFFIX)); | |
569 | ||
570 | f = fileTable_openReadFile (context_fileTable (), fname); | |
571 | ||
572 | if (f == NULL) | |
573 | { | |
574 | displayScanClose (); | |
575 | llfatalerror (message ("Cannot open dump file for loading: %s", | |
576 | fname)); | |
577 | } | |
578 | else | |
579 | { | |
580 | fileloc_reallyFree (g_currentloc); | |
581 | g_currentloc = fileloc_createLib (cfname); | |
582 | ||
583 | if (!loadLCDFile (f, cfname)) | |
584 | { | |
585 | if (!loadStandardState ()) | |
586 | { | |
587 | ctype_initTable (); | |
588 | } | |
589 | } | |
590 | ||
591 | check (fileTable_closeFile (context_fileTable (), f)); | |
592 | } | |
593 | ||
594 | /* usymtab_printAll (); */ | |
595 | cstring_free (fname); | |
596 | } | |
597 |