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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 | ** 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 | # include "lclintMacros.nf" | |
35 | # include "llbasic.h" | |
36 | ||
37 | # include "osd.h" | |
38 | ||
39 | # ifndef NOLCL | |
40 | # include "gram.h" | |
41 | ||
42 | # include "lclscan.h" | |
43 | # endif | |
44 | ||
45 | ||
46 | # include "herald.h" | |
47 | # include "lcllib.h" | |
48 | # include "llmain.h" | |
49 | # include "portab.h" | |
50 | ||
51 | /*@-incondefs@*/ /*@-redecl@*/ | |
52 | extern /*@dependent@*/ FILE *yyin; | |
53 | /*@=incondefs@*/ /*@=redecl@*/ | |
54 | ||
55 | /*@constant int NUMLIBS; @*/ | |
56 | # define NUMLIBS 17 | |
57 | ||
58 | /*@constant int NUMPOSIXLIBS; @*/ | |
59 | # define NUMPOSIXLIBS 12 | |
60 | ||
61 | static ob_mstring posixlibs[NUMPOSIXLIBS] = | |
62 | { | |
63 | "sys/stat", | |
64 | "sys/types", | |
65 | "dirent", | |
66 | "fcntl", | |
67 | "grp", | |
68 | "pwd", | |
69 | "sys/times", | |
70 | "sys/utsname", | |
71 | "sys/wait", | |
72 | "termios", | |
73 | "unistd", | |
74 | "utime" | |
75 | } ; | |
76 | ||
77 | static ob_mstring stdlibs[NUMLIBS] = | |
78 | { | |
79 | "assert", | |
80 | "ctype", | |
81 | "errno", | |
82 | "float", | |
83 | "limits", | |
84 | "locale", | |
85 | "math", | |
86 | "setjmp", | |
87 | "signal", | |
88 | "stdarg", | |
89 | "stddef", | |
90 | "stdio", | |
91 | "stdlib", | |
92 | "strings", | |
93 | "string", | |
94 | "time", | |
95 | "wchar" | |
96 | } ; | |
97 | ||
98 | static bool loadStateFile (FILE * p_f, cstring p_name); | |
99 | ||
100 | bool | |
101 | lcllib_isSkipHeader (cstring sname) | |
102 | { | |
103 | int i; | |
104 | bool posixlib = FALSE; | |
105 | char *libname; | |
106 | char *name = cstring_toCharsSafe (sname); | |
107 | char *matchname; | |
108 | ||
109 | llassert (cstring_isDefined (sname)); | |
110 | name = removeExtension (name, ".h"); | |
111 | ||
112 | libname = strrchr (name, CONNECTCHAR); | |
113 | matchname = libname; | |
114 | ||
115 | if (libname == NULL) | |
116 | { | |
117 | libname = name; | |
118 | } | |
119 | else | |
120 | { | |
121 | libname++; | |
122 | /*@-branchstate@*/ | |
123 | } | |
124 | /*@=branchstate@*/ | |
125 | ||
126 | if (mstring_equal (libname, "varargs")) | |
127 | { | |
128 | fileloc tmp = fileloc_makePreprocPrevious (g_currentloc); | |
129 | ||
130 | voptgenerror | |
131 | (FLG_USEVARARGS, | |
132 | message ("Include file <%s> is inconsistent with " | |
133 | "ANSI library (should use <stdarg.h>)", | |
134 | cstring_fromChars (libname)), | |
135 | tmp); | |
136 | ||
137 | fileloc_free (tmp); | |
138 | sfree (name); | |
139 | return TRUE; | |
140 | } | |
141 | ||
142 | if (context_getFlag (FLG_SKIPANSIHEADERS) | |
143 | && context_usingAnsiLibrary ()) | |
144 | { | |
145 | ||
146 | for (i = 0; i < NUMLIBS; i++) | |
147 | { | |
148 | if (mstring_equal (libname, stdlibs[i])) | |
149 | { | |
150 | sfree (name); | |
151 | return TRUE; | |
152 | } | |
153 | } | |
154 | } | |
155 | ||
156 | for (i = 0; i < NUMPOSIXLIBS; i++) | |
157 | { | |
158 | if (strchr (posixlibs[i], CONNECTCHAR) != NULL) | |
159 | { | |
160 | char *ptr; | |
161 | ||
162 | if ((ptr = strstr (name, posixlibs[i])) != NULL) | |
163 | { | |
164 | if (ptr[strlen (posixlibs[i])] == '\0') | |
165 | { | |
166 | posixlib = TRUE; | |
167 | matchname = ptr; | |
168 | break; | |
169 | } | |
170 | else | |
171 | { | |
172 | ; /* no match */ | |
173 | } | |
174 | } | |
175 | } | |
176 | else | |
177 | { | |
178 | if (mstring_equal (libname, posixlibs[i])) | |
179 | { | |
180 | posixlib = TRUE; | |
181 | matchname = libname; | |
182 | break; | |
183 | } | |
184 | /*@-branchstate@*/ | |
185 | } | |
186 | } /*@=branchstate@*/ | |
187 | ||
188 | if (posixlib) | |
189 | { | |
190 | if (context_usingPosixLibrary ()) | |
191 | { | |
192 | if (context_getFlag (FLG_SKIPPOSIXHEADERS)) | |
193 | { | |
194 | sfree (name); | |
195 | return TRUE; | |
196 | } | |
197 | } | |
198 | else | |
199 | { | |
200 | fileloc tmp = fileloc_makePreprocPrevious (g_currentloc); | |
201 | ||
202 | voptgenerror | |
203 | (FLG_WARNPOSIX, | |
204 | message ("Include file <%s> matches the name of a " | |
205 | "POSIX library, but the POSIX library is " | |
206 | "not being used. Consider using +posixlib " | |
207 | "or +posixstrictlib to select the POSIX " | |
208 | "library, or -warnposix " | |
209 | "to suppress this message.", | |
210 | cstring_fromChars (matchname)), | |
211 | tmp); | |
212 | ||
213 | fileloc_free (tmp); | |
214 | } | |
215 | } | |
216 | ||
217 | sfree (name); | |
218 | return FALSE; | |
219 | } | |
220 | ||
221 | static void printDot (void) | |
222 | { | |
223 | if (context_getFlag (FLG_SHOWSCAN)) | |
224 | { | |
225 | (void) fflush (g_msgstream); | |
226 | fprintf (stderr, "."); | |
227 | (void) fflush (stderr); | |
228 | } | |
229 | } | |
230 | ||
231 | void | |
232 | dumpState (cstring cfname) | |
233 | { | |
234 | FILE *f; | |
235 | char *fname = cstring_toCharsSafe (cfname); | |
236 | ||
237 | fname = addExtension (fname, DUMP_SUFFIX); | |
238 | ||
239 | f = fopen (fname, "w"); | |
240 | ||
241 | if (context_getFlag (FLG_SHOWSCAN)) | |
242 | { | |
243 | fprintf (stderr, "< Dumping to %s ", fname); | |
244 | } | |
245 | ||
246 | if (f == NULL) | |
247 | { | |
248 | llgloberror (message ("Cannot open dump file for writing: %s", cfname)); | |
249 | } | |
250 | else | |
251 | { | |
252 | /* | |
253 | ** sequence is convulted --- must call usymtab_prepareDump before | |
254 | ** dumping ctype table to convert type uid's | |
255 | */ | |
256 | ||
257 | printDot (); | |
258 | ||
259 | usymtab_prepareDump (); | |
260 | ||
261 | /* | |
262 | ** Be careful, these lines must match loadStateFile checking. | |
263 | */ | |
264 | ||
265 | fprintf (f, ";;LCLint Dump: %s\n", fname); | |
266 | fprintf (f, ";;%s\n", LCL_VERSION); | |
267 | fprintf (f, ";;lib:%d\n", (int) context_getLibrary ()); | |
268 | fprintf (f, ";;ctTable\n"); | |
269 | ||
270 | printDot (); | |
271 | ctype_dumpTable (f); | |
272 | printDot (); | |
273 | ||
274 | fprintf (f, ";;tistable\n"); | |
275 | typeIdSet_dumpTable (f); | |
276 | printDot (); | |
277 | ||
278 | fprintf (f, ";;symTable\n"); | |
279 | usymtab_dump (f); | |
280 | printDot (); | |
281 | ||
282 | fprintf (f, ";; Modules access\n"); | |
283 | context_dumpModuleAccess (f); | |
284 | fprintf (f, ";;End\n"); | |
285 | check (fclose (f) == 0); | |
286 | } | |
287 | ||
288 | if (context_getFlag (FLG_SHOWSCAN)) | |
289 | { | |
290 | fprintf (g_msgstream, " >\n"); | |
291 | } | |
292 | ||
293 | sfree (fname); | |
294 | } | |
295 | ||
296 | bool | |
297 | loadStandardState () | |
298 | { | |
299 | char *fpath; | |
300 | FILE *stdlib; | |
301 | bool result; | |
302 | char *libname = addExtension (context_selectedLibrary (), DUMP_SUFFIX); | |
303 | ||
304 | ||
305 | if (osd_findOnLarchPath (libname, &fpath) != OSD_FILEFOUND) | |
306 | { | |
307 | lldiagmsg (message ("Cannot find %sstandard library: %s", | |
308 | cstring_makeLiteralTemp | |
309 | (context_getFlag (FLG_STRICTLIB) ? "strict " | |
310 | : (context_getFlag (FLG_UNIXLIB) ? "unix " : "")), | |
311 | cstring_makeLiteralTemp (libname))); | |
312 | lldiagmsg (cstring_makeLiteral (" Check LARCH_PATH environment variable.")); | |
313 | result = FALSE; | |
314 | } | |
315 | else | |
316 | { | |
317 | stdlib = fopen (fpath, "r"); | |
318 | ||
319 | if (stdlib == NULL) | |
320 | { | |
321 | lldiagmsg (message ("Cannot read standard library: %s", | |
322 | cstring_fromChars (fpath))); | |
323 | lldiagmsg (cstring_makeLiteral (" Check LARCH_PATH environment variable.")); | |
324 | ||
325 | result = FALSE; | |
326 | } | |
327 | else | |
328 | { | |
329 | if (context_getFlag (FLG_WHICHLIB)) | |
330 | { | |
331 | char *t = mstring_create (MAX_NAME_LENGTH); | |
332 | char *ot = t; | |
333 | ||
334 | if (fgets (t, MAX_NAME_LENGTH, stdlib) == NULL) | |
335 | { | |
336 | llfatalerror (cstring_makeLiteral ("Standard library format invalid")); | |
337 | } | |
338 | ||
339 | if (fgets (t, MAX_NAME_LENGTH, stdlib) != NULL) | |
340 | { | |
341 | if (*t == ';' && *(t + 1) == ';') | |
342 | { | |
343 | t += 2; | |
344 | } | |
345 | } | |
346 | ||
347 | if (t == NULL) | |
348 | { | |
349 | lldiagmsg (message ("Standard library: %s <cannot read creation information>", | |
350 | cstring_fromChars (fpath))); | |
351 | } | |
352 | else | |
353 | { | |
354 | char *tt; | |
355 | ||
356 | tt = strrchr (t, '\n'); | |
357 | if (tt != NULL) | |
358 | *tt = '\0'; | |
359 | ||
360 | lldiagmsg (message ("Standard library: %s", cstring_fromChars (fpath))); | |
361 | lldiagmsg (message (" (created using %s)", cstring_fromChars (t))); | |
362 | } | |
363 | ||
364 | sfree (ot); | |
365 | ||
366 | check (fclose (stdlib) == 0); | |
367 | stdlib = fopen (fpath, "r"); | |
368 | } | |
369 | ||
370 | llassert (stdlib != NULL); | |
371 | ||
372 | fileloc_reallyFree (g_currentloc); | |
373 | g_currentloc = fileloc_createLib (cstring_makeLiteralTemp (libname)); | |
374 | ||
375 | if (context_getDebug (FLG_SHOWSCAN)) | |
376 | { | |
377 | context_hideShowscan (); | |
378 | result = loadStateFile (stdlib, cstring_fromChars (fpath)); | |
379 | context_unhideShowscan (); | |
380 | } | |
381 | else | |
382 | { | |
383 | result = loadStateFile (stdlib, cstring_fromChars (fpath)); | |
384 | } | |
385 | ||
386 | check (fclose (stdlib) == 0); | |
387 | } | |
388 | } | |
389 | ||
390 | sfree (libname); | |
391 | return result; | |
392 | } | |
393 | ||
394 | /*@constant int BUFLEN;@*/ | |
395 | # define BUFLEN 128 | |
396 | ||
397 | static bool | |
398 | loadStateFile (FILE *f, cstring name) | |
399 | { | |
400 | char buf[BUFLEN]; | |
401 | ||
402 | /* | |
403 | ** Check version. Should be >= LCL_MIN_VERSION | |
404 | */ | |
405 | ||
406 | if ((fgets (buf, BUFLEN, f) == NULL) | |
407 | || !mstring_equalPrefix (buf, ";;LCLint Dump:")) | |
408 | { | |
409 | loadllmsg (message ("Load library %s is not in LCLint library format. Attempting " | |
410 | "to continue without library.", name)); | |
411 | return FALSE; | |
412 | } | |
413 | ||
414 | if (fgets (buf, BUFLEN, f) != NULL) | |
415 | { | |
416 | if (!mstring_equalPrefix (buf, ";;")) | |
417 | { | |
418 | loadllmsg (message ("Load library %s is not in LCLint library format. Attempting " | |
419 | "to continue without library.", name)); | |
420 | return FALSE; | |
421 | } | |
422 | else if (mstring_equalPrefix (buf, ";;ctTable")) | |
423 | { | |
424 | loadllmsg (message ("Load library %s is in obsolete LCLint library format. Attempting " | |
425 | "to continue anyway, but results may be incorrect. Rebuild " | |
426 | "the library with this version of lclint.", | |
427 | name)); | |
428 | } | |
429 | else | |
430 | { | |
431 | float version = 0.0; | |
432 | ||
433 | if (sscanf (buf, ";;LCLint %f", &version) != 1) | |
434 | { | |
435 | loadllmsg (message ("Load library %s is not in LCLint library format (missing version " | |
436 | "number). Attempting " | |
437 | "to continue without library.", name)); | |
438 | return FALSE; | |
439 | } | |
440 | else | |
441 | { | |
442 | if ((LCL_MIN_VERSION - version) >= FLT_EPSILON) | |
443 | { | |
444 | cstring vname; | |
445 | char *nl = strchr (buf, '\n'); | |
446 | ||
c3e695ff | 447 | /*drl7x this is evans is code I think |
448 | I'll need is find out if code is safe or if I | |
449 | broke it somehow... */ | |
450 | /*@i223*/ *nl = '\0'; | |
616915dd | 451 | |
452 | vname = cstring_fromChars (buf + 9); | |
453 | ||
454 | loadllmsg (message ("Load library %s is in obsolete LCLint library " | |
455 | "format (version %s). Attempting " | |
456 | "to continue anyway, but results may be incorrect. Rebuild " | |
457 | "the library with this version of lclint.", | |
458 | name, vname)); | |
459 | } | |
460 | else | |
461 | { | |
462 | if ((fgets (buf, BUFLEN, f) == NULL)) | |
463 | { | |
464 | loadllmsg (message ("Load library %s is not in LCLint library " | |
465 | "format (missing library code). Attempting " | |
466 | "to continue without library.", name)); | |
467 | return FALSE; | |
468 | } | |
469 | else | |
470 | { | |
471 | int lib; | |
472 | ||
473 | if (sscanf (buf, ";;lib:%d", &lib) != 1) | |
474 | { | |
475 | loadllmsg (message ("Load library %s is not in LCLint library " | |
476 | "format (missing library code). Attempting " | |
477 | "to continue without library.", name)); | |
478 | return FALSE; | |
479 | } | |
480 | else | |
481 | { | |
482 | flagcode code = (flagcode) lib; | |
483 | ||
484 | if (flagcode_isLibraryFlag (code)) | |
485 | { | |
486 | if (context_doMerge ()) | |
487 | { | |
488 | context_setLibrary (code); | |
489 | } | |
490 | } | |
491 | else | |
492 | { | |
493 | loadllmsg (message ("Load library %s has invalid library code. " | |
494 | "Attempting to continue without library.", | |
495 | name)); | |
496 | ||
497 | return FALSE; | |
498 | } | |
499 | } | |
500 | } | |
501 | } | |
502 | } | |
503 | } | |
504 | } | |
505 | else | |
506 | { | |
507 | loadllmsg (message ("Load library %s is not in LCLint library format (missing lines). " | |
508 | "Attempting to continue without library.", name)); | |
509 | return FALSE; | |
510 | } | |
511 | ||
512 | ctype_loadTable (f); | |
513 | printDot (); | |
514 | ||
515 | typeIdSet_loadTable (f); | |
516 | printDot (); | |
517 | ||
518 | usymtab_load (f); | |
519 | printDot (); | |
520 | ||
521 | context_loadModuleAccess (f); | |
522 | printDot (); | |
523 | ||
524 | return TRUE; | |
525 | } | |
526 | ||
527 | /* | |
528 | ** load state from file created by dumpState | |
529 | */ | |
530 | ||
531 | void | |
532 | loadState (cstring cfname) | |
533 | { | |
534 | FILE *f; | |
535 | char *fname = cstring_toCharsSafe (cfname); | |
536 | cstring ofname = cstring_copy (cfname); | |
537 | ||
538 | fname = addExtension (fname, DUMP_SUFFIX); | |
539 | ||
540 | f = fopen (fname, "r"); | |
541 | ||
542 | if (f == NULL) | |
543 | { | |
544 | if (context_getDebug (FLG_SHOWSCAN)) | |
545 | fprintf (g_msgstream, " >\n"); | |
546 | ||
547 | llfatalerror (message ("Cannot open dump file for loading: %s", cfname)); | |
548 | } | |
549 | else | |
550 | { | |
551 | fileloc_reallyFree (g_currentloc); | |
552 | g_currentloc = fileloc_createLib (ofname); | |
553 | ||
554 | if (!loadStateFile (f, ofname)) | |
555 | { | |
556 | if (!loadStandardState ()) | |
557 | { | |
558 | ctype_initTable (); | |
559 | } | |
560 | } | |
561 | ||
562 | check (fclose (f) == 0); | |
563 | } | |
564 | ||
565 | cstring_free (ofname); | |
566 | sfree (fname); | |
567 | } | |
568 |