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616915dd | 1 | /* |
2 | ** LCLint - annotation-assisted static program checker | |
28bf4b0b | 3 | ** Copyright (C) 1994-2001 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 | ** | |
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@*/ | |
28bf4b0b | 52 | extern /*@open@*/ /*@dependent@*/ FILE *yyin; |
616915dd | 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 | ||
28bf4b0b | 98 | static bool loadLCDFile (FILE * p_f, cstring p_name); |
616915dd | 99 | |
100 | bool | |
101 | lcllib_isSkipHeader (cstring sname) | |
102 | { | |
103 | int i; | |
104 | bool posixlib = FALSE; | |
105 | char *libname; | |
616915dd | 106 | char *matchname; |
28bf4b0b | 107 | cstring xname; |
616915dd | 108 | |
109 | llassert (cstring_isDefined (sname)); | |
28bf4b0b | 110 | xname = fileLib_withoutExtension (sname, cstring_makeLiteralTemp (".h")); |
616915dd | 111 | |
28bf4b0b | 112 | /*@access cstring@*/ |
113 | llassert (cstring_isDefined (xname)); | |
114 | libname = strrchr (xname, CONNECTCHAR); | |
616915dd | 115 | matchname = libname; |
116 | ||
117 | if (libname == NULL) | |
118 | { | |
28bf4b0b | 119 | libname = xname; |
616915dd | 120 | } |
121 | else | |
122 | { | |
123 | libname++; | |
124 | /*@-branchstate@*/ | |
125 | } | |
126 | /*@=branchstate@*/ | |
127 | ||
128 | if (mstring_equal (libname, "varargs")) | |
129 | { | |
130 | fileloc tmp = fileloc_makePreprocPrevious (g_currentloc); | |
131 | ||
132 | voptgenerror | |
133 | (FLG_USEVARARGS, | |
134 | message ("Include file <%s> is inconsistent with " | |
135 | "ANSI library (should use <stdarg.h>)", | |
136 | cstring_fromChars (libname)), | |
137 | tmp); | |
138 | ||
139 | fileloc_free (tmp); | |
28bf4b0b | 140 | sfree (xname); |
616915dd | 141 | return TRUE; |
142 | } | |
143 | ||
144 | if (context_getFlag (FLG_SKIPANSIHEADERS) | |
145 | && context_usingAnsiLibrary ()) | |
146 | { | |
147 | ||
148 | for (i = 0; i < NUMLIBS; i++) | |
149 | { | |
150 | if (mstring_equal (libname, stdlibs[i])) | |
151 | { | |
28bf4b0b | 152 | sfree (xname); |
616915dd | 153 | return TRUE; |
154 | } | |
155 | } | |
156 | } | |
157 | ||
158 | for (i = 0; i < NUMPOSIXLIBS; i++) | |
159 | { | |
160 | if (strchr (posixlibs[i], CONNECTCHAR) != NULL) | |
161 | { | |
162 | char *ptr; | |
163 | ||
28bf4b0b | 164 | if ((ptr = strstr (xname, posixlibs[i])) != NULL) |
616915dd | 165 | { |
166 | if (ptr[strlen (posixlibs[i])] == '\0') | |
167 | { | |
168 | posixlib = TRUE; | |
169 | matchname = ptr; | |
170 | break; | |
171 | } | |
172 | else | |
173 | { | |
174 | ; /* no match */ | |
175 | } | |
176 | } | |
177 | } | |
178 | else | |
179 | { | |
180 | if (mstring_equal (libname, posixlibs[i])) | |
181 | { | |
182 | posixlib = TRUE; | |
183 | matchname = libname; | |
184 | break; | |
185 | } | |
186 | /*@-branchstate@*/ | |
187 | } | |
188 | } /*@=branchstate@*/ | |
189 | ||
190 | if (posixlib) | |
191 | { | |
192 | if (context_usingPosixLibrary ()) | |
193 | { | |
194 | if (context_getFlag (FLG_SKIPPOSIXHEADERS)) | |
195 | { | |
28bf4b0b | 196 | sfree (xname); |
616915dd | 197 | return TRUE; |
198 | } | |
199 | } | |
200 | else | |
201 | { | |
202 | fileloc tmp = fileloc_makePreprocPrevious (g_currentloc); | |
203 | ||
204 | voptgenerror | |
205 | (FLG_WARNPOSIX, | |
206 | message ("Include file <%s> matches the name of a " | |
207 | "POSIX library, but the POSIX library is " | |
208 | "not being used. Consider using +posixlib " | |
209 | "or +posixstrictlib to select the POSIX " | |
210 | "library, or -warnposix " | |
211 | "to suppress this message.", | |
212 | cstring_fromChars (matchname)), | |
213 | tmp); | |
214 | ||
215 | fileloc_free (tmp); | |
216 | } | |
217 | } | |
218 | ||
28bf4b0b | 219 | cstring_free (xname); |
220 | /*@noaccess cstring@*/ | |
616915dd | 221 | return FALSE; |
222 | } | |
223 | ||
224 | static void printDot (void) | |
225 | { | |
226 | if (context_getFlag (FLG_SHOWSCAN)) | |
227 | { | |
228 | (void) fflush (g_msgstream); | |
229 | fprintf (stderr, "."); | |
230 | (void) fflush (stderr); | |
231 | } | |
232 | } | |
233 | ||
234 | void | |
235 | dumpState (cstring cfname) | |
236 | { | |
237 | FILE *f; | |
28bf4b0b | 238 | cstring fname = fileLib_addExtension (cfname, cstring_makeLiteralTemp (DUMP_SUFFIX)); |
616915dd | 239 | |
28bf4b0b | 240 | f = fopen (cstring_toCharsSafe (fname), "w"); |
616915dd | 241 | |
242 | if (context_getFlag (FLG_SHOWSCAN)) | |
243 | { | |
28bf4b0b | 244 | fprintf (stderr, "< Dumping to %s ", cstring_toCharsSafe (fname)); |
616915dd | 245 | } |
246 | ||
247 | if (f == NULL) | |
248 | { | |
28bf4b0b | 249 | llgloberror (message ("Cannot open dump file for writing: %s", fname)); |
616915dd | 250 | } |
251 | else | |
252 | { | |
253 | /* | |
254 | ** sequence is convulted --- must call usymtab_prepareDump before | |
255 | ** dumping ctype table to convert type uid's | |
256 | */ | |
257 | ||
258 | printDot (); | |
259 | ||
28bf4b0b | 260 | /* |
261 | DPRINTF (("Before prepare dump:")); | |
262 | ctype_printTable (); | |
263 | DPRINTF (("Preparing dump...")); | |
264 | */ | |
265 | ||
616915dd | 266 | usymtab_prepareDump (); |
267 | ||
268 | /* | |
28bf4b0b | 269 | ** Be careful, these lines must match loadLCDFile checking. |
616915dd | 270 | */ |
271 | ||
28bf4b0b | 272 | fprintf (f, ";;LCLint Dump: %s\n", cstring_toCharsSafe (fname)); |
616915dd | 273 | fprintf (f, ";;%s\n", LCL_VERSION); |
274 | fprintf (f, ";;lib:%d\n", (int) context_getLibrary ()); | |
275 | fprintf (f, ";;ctTable\n"); | |
28bf4b0b | 276 | |
277 | DPRINTF (("Dumping types...")); | |
616915dd | 278 | printDot (); |
28bf4b0b | 279 | ctype_dumpTable (f); |
616915dd | 280 | printDot (); |
28bf4b0b | 281 | |
282 | DPRINTF (("Dumping type sets...")); | |
616915dd | 283 | fprintf (f, ";;tistable\n"); |
284 | typeIdSet_dumpTable (f); | |
285 | printDot (); | |
28bf4b0b | 286 | |
287 | DPRINTF (("Dumping usymtab...")); | |
288 | fprintf (f, ";;symTable\n"); | |
616915dd | 289 | usymtab_dump (f); |
290 | printDot (); | |
291 | ||
28bf4b0b | 292 | DPRINTF (("Dumping modules...")); |
616915dd | 293 | fprintf (f, ";; Modules access\n"); |
294 | context_dumpModuleAccess (f); | |
295 | fprintf (f, ";;End\n"); | |
296 | check (fclose (f) == 0); | |
297 | } | |
298 | ||
299 | if (context_getFlag (FLG_SHOWSCAN)) | |
300 | { | |
301 | fprintf (g_msgstream, " >\n"); | |
302 | } | |
303 | ||
28bf4b0b | 304 | cstring_free (fname); |
616915dd | 305 | } |
306 | ||
307 | bool | |
308 | loadStandardState () | |
309 | { | |
28bf4b0b | 310 | cstring fpath; |
616915dd | 311 | FILE *stdlib; |
312 | bool result; | |
28bf4b0b | 313 | cstring libname = fileLib_addExtension (context_selectedLibrary (), |
314 | cstring_makeLiteralTemp (DUMP_SUFFIX)); | |
616915dd | 315 | |
316 | if (osd_findOnLarchPath (libname, &fpath) != OSD_FILEFOUND) | |
317 | { | |
318 | lldiagmsg (message ("Cannot find %sstandard library: %s", | |
319 | cstring_makeLiteralTemp | |
320 | (context_getFlag (FLG_STRICTLIB) ? "strict " | |
321 | : (context_getFlag (FLG_UNIXLIB) ? "unix " : "")), | |
28bf4b0b | 322 | libname)); |
616915dd | 323 | lldiagmsg (cstring_makeLiteral (" Check LARCH_PATH environment variable.")); |
324 | result = FALSE; | |
325 | } | |
326 | else | |
327 | { | |
28bf4b0b | 328 | stdlib = fopen (cstring_toCharsSafe (fpath), "r"); |
616915dd | 329 | |
330 | if (stdlib == NULL) | |
331 | { | |
332 | lldiagmsg (message ("Cannot read standard library: %s", | |
28bf4b0b | 333 | fpath)); |
616915dd | 334 | lldiagmsg (cstring_makeLiteral (" Check LARCH_PATH environment variable.")); |
335 | ||
336 | result = FALSE; | |
337 | } | |
338 | else | |
339 | { | |
340 | if (context_getFlag (FLG_WHICHLIB)) | |
341 | { | |
342 | char *t = mstring_create (MAX_NAME_LENGTH); | |
343 | char *ot = t; | |
344 | ||
28bf4b0b | 345 | if ((t = reader_readLine (stdlib, t, MAX_NAME_LENGTH)) == NULL) |
616915dd | 346 | { |
347 | llfatalerror (cstring_makeLiteral ("Standard library format invalid")); | |
348 | } | |
349 | ||
28bf4b0b | 350 | if ((t = reader_readLine (stdlib, t, MAX_NAME_LENGTH)) != NULL) |
616915dd | 351 | { |
352 | if (*t == ';' && *(t + 1) == ';') | |
353 | { | |
354 | t += 2; | |
355 | } | |
356 | } | |
357 | ||
358 | if (t == NULL) | |
359 | { | |
360 | lldiagmsg (message ("Standard library: %s <cannot read creation information>", | |
28bf4b0b | 361 | fpath)); |
616915dd | 362 | } |
363 | else | |
364 | { | |
365 | char *tt; | |
366 | ||
367 | tt = strrchr (t, '\n'); | |
368 | if (tt != NULL) | |
369 | *tt = '\0'; | |
370 | ||
28bf4b0b | 371 | lldiagmsg (message ("Standard library: %s", fpath)); |
616915dd | 372 | lldiagmsg (message (" (created using %s)", cstring_fromChars (t))); |
373 | } | |
374 | ||
375 | sfree (ot); | |
376 | ||
377 | check (fclose (stdlib) == 0); | |
28bf4b0b | 378 | stdlib = fopen (cstring_toCharsSafe (fpath), "r"); |
616915dd | 379 | } |
380 | ||
381 | llassert (stdlib != NULL); | |
382 | ||
383 | fileloc_reallyFree (g_currentloc); | |
28bf4b0b | 384 | g_currentloc = fileloc_createLib (libname); |
385 | ||
386 | DPRINTF (("Loading: %s", fpath)); | |
616915dd | 387 | |
388 | if (context_getDebug (FLG_SHOWSCAN)) | |
389 | { | |
28bf4b0b | 390 | fprintf (g_msgstream, "< loading standard library %s ", |
391 | cstring_toCharsSafe (fpath)); | |
392 | result = loadLCDFile (stdlib, fpath); | |
393 | fprintf (g_msgstream, " >\n"); | |
616915dd | 394 | } |
395 | else | |
396 | { | |
28bf4b0b | 397 | result = loadLCDFile (stdlib, fpath); |
616915dd | 398 | } |
399 | ||
400 | check (fclose (stdlib) == 0); | |
401 | } | |
402 | } | |
403 | ||
28bf4b0b | 404 | cstring_free (libname); |
616915dd | 405 | return result; |
406 | } | |
407 | ||
408 | /*@constant int BUFLEN;@*/ | |
409 | # define BUFLEN 128 | |
410 | ||
411 | static bool | |
28bf4b0b | 412 | loadLCDFile (FILE *f, cstring name) |
616915dd | 413 | { |
414 | char buf[BUFLEN]; | |
415 | ||
416 | /* | |
28bf4b0b | 417 | ** Check version. Should be >= LCLINT_LIBVERSION |
616915dd | 418 | */ |
419 | ||
28bf4b0b | 420 | if (reader_readLine (f, buf, BUFLEN) == NULL |
616915dd | 421 | || !mstring_equalPrefix (buf, ";;LCLint Dump:")) |
422 | { | |
423 | loadllmsg (message ("Load library %s is not in LCLint library format. Attempting " | |
28bf4b0b | 424 | "to continue without library.", name)); |
616915dd | 425 | return FALSE; |
426 | } | |
427 | ||
28bf4b0b | 428 | if (reader_readLine (f, buf, BUFLEN) != NULL) |
616915dd | 429 | { |
430 | if (!mstring_equalPrefix (buf, ";;")) | |
431 | { | |
432 | loadllmsg (message ("Load library %s is not in LCLint library format. Attempting " | |
28bf4b0b | 433 | "to continue without library.", name)); |
616915dd | 434 | return FALSE; |
435 | } | |
436 | else if (mstring_equalPrefix (buf, ";;ctTable")) | |
437 | { | |
438 | loadllmsg (message ("Load library %s is in obsolete LCLint library format. Attempting " | |
28bf4b0b | 439 | "to continue anyway, but results may be incorrect. Rebuild " |
440 | "the library with this version of lclint.", | |
441 | name)); | |
616915dd | 442 | } |
443 | else | |
444 | { | |
445 | float version = 0.0; | |
446 | ||
447 | if (sscanf (buf, ";;LCLint %f", &version) != 1) | |
448 | { | |
449 | loadllmsg (message ("Load library %s is not in LCLint library format (missing version " | |
28bf4b0b | 450 | "number). Attempting " |
451 | "to continue without library.", name)); | |
616915dd | 452 | return FALSE; |
453 | } | |
454 | else | |
455 | { | |
28bf4b0b | 456 | if ((LCLINT_LIBVERSION - version) >= FLT_EPSILON) |
616915dd | 457 | { |
458 | cstring vname; | |
459 | char *nl = strchr (buf, '\n'); | |
460 | ||
28bf4b0b | 461 | *nl = '\0'; |
616915dd | 462 | |
463 | vname = cstring_fromChars (buf + 9); | |
464 | ||
465 | loadllmsg (message ("Load library %s is in obsolete LCLint library " | |
466 | "format (version %s). Attempting " | |
467 | "to continue anyway, but results may be incorrect. Rebuild " | |
468 | "the library with this version of lclint.", | |
469 | name, vname)); | |
470 | } | |
471 | else | |
472 | { | |
28bf4b0b | 473 | if (reader_readLine (f, buf, BUFLEN) == NULL) |
616915dd | 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 | int lib; | |
483 | ||
484 | if (sscanf (buf, ";;lib:%d", &lib) != 1) | |
485 | { | |
486 | loadllmsg (message ("Load library %s is not in LCLint library " | |
487 | "format (missing library code). Attempting " | |
488 | "to continue without library.", name)); | |
489 | return FALSE; | |
490 | } | |
491 | else | |
492 | { | |
493 | flagcode code = (flagcode) lib; | |
494 | ||
495 | if (flagcode_isLibraryFlag (code)) | |
496 | { | |
497 | if (context_doMerge ()) | |
498 | { | |
499 | context_setLibrary (code); | |
500 | } | |
501 | } | |
502 | else | |
503 | { | |
28bf4b0b | 504 | loadllmsg (message ("Load library %s has invalid library code (%s). " |
616915dd | 505 | "Attempting to continue without library.", |
28bf4b0b | 506 | name, |
507 | flagcode_unparse (code))); | |
616915dd | 508 | |
509 | return FALSE; | |
510 | } | |
511 | } | |
512 | } | |
513 | } | |
514 | } | |
515 | } | |
516 | } | |
517 | else | |
518 | { | |
519 | loadllmsg (message ("Load library %s is not in LCLint library format (missing lines). " | |
520 | "Attempting to continue without library.", name)); | |
521 | return FALSE; | |
522 | } | |
523 | ||
524 | ctype_loadTable (f); | |
525 | printDot (); | |
526 | ||
527 | typeIdSet_loadTable (f); | |
528 | printDot (); | |
529 | ||
530 | usymtab_load (f); | |
531 | printDot (); | |
532 | ||
533 | context_loadModuleAccess (f); | |
534 | printDot (); | |
535 | ||
536 | return TRUE; | |
537 | } | |
538 | ||
539 | /* | |
540 | ** load state from file created by dumpState | |
541 | */ | |
542 | ||
543 | void | |
544 | loadState (cstring cfname) | |
545 | { | |
546 | FILE *f; | |
28bf4b0b | 547 | cstring fname = fileLib_addExtension (cfname, cstring_makeLiteralTemp (DUMP_SUFFIX)); |
616915dd | 548 | |
28bf4b0b | 549 | f = fopen (cstring_toCharsSafe (fname), "r"); |
616915dd | 550 | |
551 | if (f == NULL) | |
552 | { | |
553 | if (context_getDebug (FLG_SHOWSCAN)) | |
554 | fprintf (g_msgstream, " >\n"); | |
555 | ||
28bf4b0b | 556 | llfatalerror (message ("Cannot open dump file for loading: %s", |
557 | fname)); | |
616915dd | 558 | } |
559 | else | |
560 | { | |
561 | fileloc_reallyFree (g_currentloc); | |
28bf4b0b | 562 | g_currentloc = fileloc_createLib (cfname); |
616915dd | 563 | |
28bf4b0b | 564 | if (!loadLCDFile (f, cfname)) |
616915dd | 565 | { |
566 | if (!loadStandardState ()) | |
567 | { | |
568 | ctype_initTable (); | |
569 | } | |
570 | } | |
571 | ||
572 | check (fclose (f) == 0); | |
573 | } | |
574 | ||
28bf4b0b | 575 | /* usymtab_printAll (); */ |
576 | cstring_free (fname); | |
616915dd | 577 | } |
578 |