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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; @*/ | |
d1eb0f0f | 59 | # define NUMPOSIXLIBS 18 |
616915dd | 60 | |
61 | static ob_mstring posixlibs[NUMPOSIXLIBS] = | |
62 | { | |
616915dd | 63 | "dirent", |
64 | "fcntl", | |
65 | "grp", | |
66 | "pwd", | |
b072092f | 67 | "regex", |
d1eb0f0f | 68 | "sys/stat", |
616915dd | 69 | "sys/times", |
d1eb0f0f | 70 | "sys/types", |
71 | "netdb", /* unix */ | |
72 | "netinet/in", /* unix */ | |
73 | "sys/resource", /* unix */ | |
74 | "sys/socket", /* not posix */ | |
75 | "sys/syslog", /* not posix */ | |
616915dd | 76 | "sys/utsname", |
77 | "sys/wait", | |
78 | "termios", | |
79 | "unistd", | |
80 | "utime" | |
81 | } ; | |
82 | ||
83 | static ob_mstring stdlibs[NUMLIBS] = | |
84 | { | |
85 | "assert", | |
86 | "ctype", | |
87 | "errno", | |
88 | "float", | |
89 | "limits", | |
90 | "locale", | |
91 | "math", | |
92 | "setjmp", | |
93 | "signal", | |
94 | "stdarg", | |
95 | "stddef", | |
96 | "stdio", | |
97 | "stdlib", | |
98 | "strings", | |
99 | "string", | |
100 | "time", | |
101 | "wchar" | |
102 | } ; | |
103 | ||
28bf4b0b | 104 | static bool loadLCDFile (FILE * p_f, cstring p_name); |
616915dd | 105 | |
106 | bool | |
107 | lcllib_isSkipHeader (cstring sname) | |
108 | { | |
109 | int i; | |
110 | bool posixlib = FALSE; | |
111 | char *libname; | |
616915dd | 112 | char *matchname; |
28bf4b0b | 113 | cstring xname; |
616915dd | 114 | |
115 | llassert (cstring_isDefined (sname)); | |
28bf4b0b | 116 | xname = fileLib_withoutExtension (sname, cstring_makeLiteralTemp (".h")); |
616915dd | 117 | |
d1eb0f0f | 118 | DPRINTF (("Include? %s", sname)); |
119 | ||
28bf4b0b | 120 | /*@access cstring@*/ |
121 | llassert (cstring_isDefined (xname)); | |
122 | libname = strrchr (xname, CONNECTCHAR); | |
616915dd | 123 | matchname = libname; |
124 | ||
125 | if (libname == NULL) | |
126 | { | |
28bf4b0b | 127 | libname = xname; |
616915dd | 128 | } |
129 | else | |
130 | { | |
131 | libname++; | |
132 | /*@-branchstate@*/ | |
133 | } | |
134 | /*@=branchstate@*/ | |
135 | ||
136 | if (mstring_equal (libname, "varargs")) | |
137 | { | |
138 | fileloc tmp = fileloc_makePreprocPrevious (g_currentloc); | |
139 | ||
140 | voptgenerror | |
141 | (FLG_USEVARARGS, | |
142 | message ("Include file <%s> is inconsistent with " | |
143 | "ANSI library (should use <stdarg.h>)", | |
144 | cstring_fromChars (libname)), | |
145 | tmp); | |
146 | ||
147 | fileloc_free (tmp); | |
28bf4b0b | 148 | sfree (xname); |
616915dd | 149 | return TRUE; |
150 | } | |
151 | ||
152 | if (context_getFlag (FLG_SKIPANSIHEADERS) | |
153 | && context_usingAnsiLibrary ()) | |
154 | { | |
155 | ||
156 | for (i = 0; i < NUMLIBS; i++) | |
157 | { | |
158 | if (mstring_equal (libname, stdlibs[i])) | |
159 | { | |
28bf4b0b | 160 | sfree (xname); |
616915dd | 161 | return TRUE; |
162 | } | |
163 | } | |
164 | } | |
165 | ||
166 | for (i = 0; i < NUMPOSIXLIBS; i++) | |
167 | { | |
168 | if (strchr (posixlibs[i], CONNECTCHAR) != NULL) | |
169 | { | |
170 | char *ptr; | |
171 | ||
28bf4b0b | 172 | if ((ptr = strstr (xname, posixlibs[i])) != NULL) |
616915dd | 173 | { |
174 | if (ptr[strlen (posixlibs[i])] == '\0') | |
175 | { | |
176 | posixlib = TRUE; | |
177 | matchname = ptr; | |
d1eb0f0f | 178 | DPRINTF (("Found match: %s", matchname)); |
616915dd | 179 | break; |
180 | } | |
181 | else | |
182 | { | |
183 | ; /* no match */ | |
184 | } | |
185 | } | |
186 | } | |
187 | else | |
188 | { | |
189 | if (mstring_equal (libname, posixlibs[i])) | |
190 | { | |
191 | posixlib = TRUE; | |
192 | matchname = libname; | |
193 | break; | |
194 | } | |
195 | /*@-branchstate@*/ | |
196 | } | |
197 | } /*@=branchstate@*/ | |
198 | ||
199 | if (posixlib) | |
200 | { | |
201 | if (context_usingPosixLibrary ()) | |
202 | { | |
203 | if (context_getFlag (FLG_SKIPPOSIXHEADERS)) | |
204 | { | |
d1eb0f0f | 205 | DPRINTF (("Skipping: %s", xname)); |
28bf4b0b | 206 | sfree (xname); |
616915dd | 207 | return TRUE; |
208 | } | |
209 | } | |
210 | else | |
211 | { | |
212 | fileloc tmp = fileloc_makePreprocPrevious (g_currentloc); | |
213 | ||
214 | voptgenerror | |
215 | (FLG_WARNPOSIX, | |
216 | message ("Include file <%s> matches the name of a " | |
217 | "POSIX library, but the POSIX library is " | |
218 | "not being used. Consider using +posixlib " | |
219 | "or +posixstrictlib to select the POSIX " | |
220 | "library, or -warnposix " | |
221 | "to suppress this message.", | |
222 | cstring_fromChars (matchname)), | |
223 | tmp); | |
224 | ||
225 | fileloc_free (tmp); | |
226 | } | |
227 | } | |
228 | ||
28bf4b0b | 229 | cstring_free (xname); |
230 | /*@noaccess cstring@*/ | |
616915dd | 231 | return FALSE; |
232 | } | |
233 | ||
234 | static void printDot (void) | |
235 | { | |
236 | if (context_getFlag (FLG_SHOWSCAN)) | |
237 | { | |
238 | (void) fflush (g_msgstream); | |
239 | fprintf (stderr, "."); | |
240 | (void) fflush (stderr); | |
241 | } | |
242 | } | |
243 | ||
244 | void | |
245 | dumpState (cstring cfname) | |
246 | { | |
247 | FILE *f; | |
28bf4b0b | 248 | cstring fname = fileLib_addExtension (cfname, cstring_makeLiteralTemp (DUMP_SUFFIX)); |
616915dd | 249 | |
28bf4b0b | 250 | f = fopen (cstring_toCharsSafe (fname), "w"); |
616915dd | 251 | |
252 | if (context_getFlag (FLG_SHOWSCAN)) | |
253 | { | |
28bf4b0b | 254 | fprintf (stderr, "< Dumping to %s ", cstring_toCharsSafe (fname)); |
616915dd | 255 | } |
256 | ||
257 | if (f == NULL) | |
258 | { | |
efd360a3 | 259 | lldiagmsg (message ("Cannot open dump file for writing: %s", fname)); |
616915dd | 260 | } |
261 | else | |
262 | { | |
263 | /* | |
264 | ** sequence is convulted --- must call usymtab_prepareDump before | |
265 | ** dumping ctype table to convert type uid's | |
266 | */ | |
267 | ||
268 | printDot (); | |
269 | ||
28bf4b0b | 270 | /* |
271 | DPRINTF (("Before prepare dump:")); | |
272 | ctype_printTable (); | |
273 | DPRINTF (("Preparing dump...")); | |
274 | */ | |
275 | ||
616915dd | 276 | usymtab_prepareDump (); |
277 | ||
278 | /* | |
28bf4b0b | 279 | ** Be careful, these lines must match loadLCDFile checking. |
616915dd | 280 | */ |
281 | ||
28bf4b0b | 282 | fprintf (f, ";;LCLint Dump: %s\n", cstring_toCharsSafe (fname)); |
616915dd | 283 | fprintf (f, ";;%s\n", LCL_VERSION); |
284 | fprintf (f, ";;lib:%d\n", (int) context_getLibrary ()); | |
285 | fprintf (f, ";;ctTable\n"); | |
28bf4b0b | 286 | |
287 | DPRINTF (("Dumping types...")); | |
616915dd | 288 | printDot (); |
28bf4b0b | 289 | ctype_dumpTable (f); |
616915dd | 290 | printDot (); |
28bf4b0b | 291 | |
292 | DPRINTF (("Dumping type sets...")); | |
616915dd | 293 | fprintf (f, ";;tistable\n"); |
294 | typeIdSet_dumpTable (f); | |
295 | printDot (); | |
28bf4b0b | 296 | |
297 | DPRINTF (("Dumping usymtab...")); | |
298 | fprintf (f, ";;symTable\n"); | |
616915dd | 299 | usymtab_dump (f); |
300 | printDot (); | |
301 | ||
28bf4b0b | 302 | DPRINTF (("Dumping modules...")); |
616915dd | 303 | fprintf (f, ";; Modules access\n"); |
304 | context_dumpModuleAccess (f); | |
305 | fprintf (f, ";;End\n"); | |
306 | check (fclose (f) == 0); | |
307 | } | |
308 | ||
309 | if (context_getFlag (FLG_SHOWSCAN)) | |
310 | { | |
311 | fprintf (g_msgstream, " >\n"); | |
312 | } | |
313 | ||
28bf4b0b | 314 | cstring_free (fname); |
616915dd | 315 | } |
316 | ||
317 | bool | |
318 | loadStandardState () | |
319 | { | |
28bf4b0b | 320 | cstring fpath; |
616915dd | 321 | FILE *stdlib; |
322 | bool result; | |
28bf4b0b | 323 | cstring libname = fileLib_addExtension (context_selectedLibrary (), |
324 | cstring_makeLiteralTemp (DUMP_SUFFIX)); | |
616915dd | 325 | |
326 | if (osd_findOnLarchPath (libname, &fpath) != OSD_FILEFOUND) | |
327 | { | |
328 | lldiagmsg (message ("Cannot find %sstandard library: %s", | |
329 | cstring_makeLiteralTemp | |
330 | (context_getFlag (FLG_STRICTLIB) ? "strict " | |
331 | : (context_getFlag (FLG_UNIXLIB) ? "unix " : "")), | |
28bf4b0b | 332 | libname)); |
616915dd | 333 | lldiagmsg (cstring_makeLiteral (" Check LARCH_PATH environment variable.")); |
334 | result = FALSE; | |
335 | } | |
336 | else | |
337 | { | |
28bf4b0b | 338 | stdlib = fopen (cstring_toCharsSafe (fpath), "r"); |
616915dd | 339 | |
340 | if (stdlib == NULL) | |
341 | { | |
342 | lldiagmsg (message ("Cannot read standard library: %s", | |
28bf4b0b | 343 | fpath)); |
616915dd | 344 | lldiagmsg (cstring_makeLiteral (" Check LARCH_PATH environment variable.")); |
345 | ||
346 | result = FALSE; | |
347 | } | |
348 | else | |
349 | { | |
350 | if (context_getFlag (FLG_WHICHLIB)) | |
351 | { | |
352 | char *t = mstring_create (MAX_NAME_LENGTH); | |
353 | char *ot = t; | |
354 | ||
28bf4b0b | 355 | if ((t = reader_readLine (stdlib, t, MAX_NAME_LENGTH)) == NULL) |
616915dd | 356 | { |
357 | llfatalerror (cstring_makeLiteral ("Standard library format invalid")); | |
358 | } | |
359 | ||
28bf4b0b | 360 | if ((t = reader_readLine (stdlib, t, MAX_NAME_LENGTH)) != NULL) |
616915dd | 361 | { |
362 | if (*t == ';' && *(t + 1) == ';') | |
363 | { | |
364 | t += 2; | |
365 | } | |
366 | } | |
367 | ||
368 | if (t == NULL) | |
369 | { | |
370 | lldiagmsg (message ("Standard library: %s <cannot read creation information>", | |
28bf4b0b | 371 | fpath)); |
616915dd | 372 | } |
373 | else | |
374 | { | |
375 | char *tt; | |
376 | ||
377 | tt = strrchr (t, '\n'); | |
378 | if (tt != NULL) | |
379 | *tt = '\0'; | |
380 | ||
28bf4b0b | 381 | lldiagmsg (message ("Standard library: %s", fpath)); |
616915dd | 382 | lldiagmsg (message (" (created using %s)", cstring_fromChars (t))); |
383 | } | |
384 | ||
385 | sfree (ot); | |
386 | ||
387 | check (fclose (stdlib) == 0); | |
28bf4b0b | 388 | stdlib = fopen (cstring_toCharsSafe (fpath), "r"); |
616915dd | 389 | } |
390 | ||
391 | llassert (stdlib != NULL); | |
392 | ||
393 | fileloc_reallyFree (g_currentloc); | |
28bf4b0b | 394 | g_currentloc = fileloc_createLib (libname); |
395 | ||
396 | DPRINTF (("Loading: %s", fpath)); | |
616915dd | 397 | |
398 | if (context_getDebug (FLG_SHOWSCAN)) | |
399 | { | |
28bf4b0b | 400 | fprintf (g_msgstream, "< loading standard library %s ", |
401 | cstring_toCharsSafe (fpath)); | |
402 | result = loadLCDFile (stdlib, fpath); | |
403 | fprintf (g_msgstream, " >\n"); | |
616915dd | 404 | } |
405 | else | |
406 | { | |
28bf4b0b | 407 | result = loadLCDFile (stdlib, fpath); |
616915dd | 408 | } |
409 | ||
410 | check (fclose (stdlib) == 0); | |
411 | } | |
412 | } | |
413 | ||
28bf4b0b | 414 | cstring_free (libname); |
616915dd | 415 | return result; |
416 | } | |
417 | ||
418 | /*@constant int BUFLEN;@*/ | |
419 | # define BUFLEN 128 | |
420 | ||
421 | static bool | |
28bf4b0b | 422 | loadLCDFile (FILE *f, cstring name) |
616915dd | 423 | { |
424 | char buf[BUFLEN]; | |
425 | ||
426 | /* | |
28bf4b0b | 427 | ** Check version. Should be >= LCLINT_LIBVERSION |
616915dd | 428 | */ |
429 | ||
28bf4b0b | 430 | if (reader_readLine (f, buf, BUFLEN) == NULL |
616915dd | 431 | || !mstring_equalPrefix (buf, ";;LCLint Dump:")) |
432 | { | |
433 | loadllmsg (message ("Load library %s is not in LCLint library format. Attempting " | |
28bf4b0b | 434 | "to continue without library.", name)); |
616915dd | 435 | return FALSE; |
436 | } | |
437 | ||
28bf4b0b | 438 | if (reader_readLine (f, buf, BUFLEN) != NULL) |
616915dd | 439 | { |
440 | if (!mstring_equalPrefix (buf, ";;")) | |
441 | { | |
442 | loadllmsg (message ("Load library %s is not in LCLint library format. Attempting " | |
28bf4b0b | 443 | "to continue without library.", name)); |
616915dd | 444 | return FALSE; |
445 | } | |
446 | else if (mstring_equalPrefix (buf, ";;ctTable")) | |
447 | { | |
448 | loadllmsg (message ("Load library %s is in obsolete LCLint library format. Attempting " | |
28bf4b0b | 449 | "to continue anyway, but results may be incorrect. Rebuild " |
450 | "the library with this version of lclint.", | |
451 | name)); | |
616915dd | 452 | } |
453 | else | |
454 | { | |
455 | float version = 0.0; | |
456 | ||
457 | if (sscanf (buf, ";;LCLint %f", &version) != 1) | |
458 | { | |
459 | loadllmsg (message ("Load library %s is not in LCLint library format (missing version " | |
28bf4b0b | 460 | "number). Attempting " |
461 | "to continue without library.", name)); | |
616915dd | 462 | return FALSE; |
463 | } | |
464 | else | |
465 | { | |
28bf4b0b | 466 | if ((LCLINT_LIBVERSION - version) >= FLT_EPSILON) |
616915dd | 467 | { |
468 | cstring vname; | |
469 | char *nl = strchr (buf, '\n'); | |
470 | ||
28bf4b0b | 471 | *nl = '\0'; |
616915dd | 472 | |
473 | vname = cstring_fromChars (buf + 9); | |
474 | ||
475 | loadllmsg (message ("Load library %s is in obsolete LCLint library " | |
476 | "format (version %s). Attempting " | |
477 | "to continue anyway, but results may be incorrect. Rebuild " | |
478 | "the library with this version of lclint.", | |
479 | name, vname)); | |
480 | } | |
481 | else | |
482 | { | |
28bf4b0b | 483 | if (reader_readLine (f, buf, BUFLEN) == NULL) |
616915dd | 484 | { |
485 | loadllmsg (message ("Load library %s is not in LCLint library " | |
486 | "format (missing library code). Attempting " | |
487 | "to continue without library.", name)); | |
488 | return FALSE; | |
489 | } | |
490 | else | |
491 | { | |
492 | int lib; | |
493 | ||
494 | if (sscanf (buf, ";;lib:%d", &lib) != 1) | |
495 | { | |
496 | loadllmsg (message ("Load library %s is not in LCLint library " | |
497 | "format (missing library code). Attempting " | |
498 | "to continue without library.", name)); | |
499 | return FALSE; | |
500 | } | |
501 | else | |
502 | { | |
503 | flagcode code = (flagcode) lib; | |
504 | ||
505 | if (flagcode_isLibraryFlag (code)) | |
506 | { | |
507 | if (context_doMerge ()) | |
508 | { | |
509 | context_setLibrary (code); | |
510 | } | |
511 | } | |
512 | else | |
513 | { | |
28bf4b0b | 514 | loadllmsg (message ("Load library %s has invalid library code (%s). " |
616915dd | 515 | "Attempting to continue without library.", |
28bf4b0b | 516 | name, |
517 | flagcode_unparse (code))); | |
616915dd | 518 | |
519 | return FALSE; | |
520 | } | |
521 | } | |
522 | } | |
523 | } | |
524 | } | |
525 | } | |
526 | } | |
527 | else | |
528 | { | |
529 | loadllmsg (message ("Load library %s is not in LCLint library format (missing lines). " | |
530 | "Attempting to continue without library.", name)); | |
531 | return FALSE; | |
532 | } | |
533 | ||
534 | ctype_loadTable (f); | |
535 | printDot (); | |
536 | ||
537 | typeIdSet_loadTable (f); | |
538 | printDot (); | |
539 | ||
540 | usymtab_load (f); | |
541 | printDot (); | |
542 | ||
543 | context_loadModuleAccess (f); | |
544 | printDot (); | |
545 | ||
546 | return TRUE; | |
547 | } | |
548 | ||
549 | /* | |
550 | ** load state from file created by dumpState | |
551 | */ | |
552 | ||
553 | void | |
554 | loadState (cstring cfname) | |
555 | { | |
556 | FILE *f; | |
28bf4b0b | 557 | cstring fname = fileLib_addExtension (cfname, cstring_makeLiteralTemp (DUMP_SUFFIX)); |
616915dd | 558 | |
28bf4b0b | 559 | f = fopen (cstring_toCharsSafe (fname), "r"); |
616915dd | 560 | |
561 | if (f == NULL) | |
562 | { | |
563 | if (context_getDebug (FLG_SHOWSCAN)) | |
564 | fprintf (g_msgstream, " >\n"); | |
565 | ||
28bf4b0b | 566 | llfatalerror (message ("Cannot open dump file for loading: %s", |
567 | fname)); | |
616915dd | 568 | } |
569 | else | |
570 | { | |
571 | fileloc_reallyFree (g_currentloc); | |
28bf4b0b | 572 | g_currentloc = fileloc_createLib (cfname); |
616915dd | 573 | |
28bf4b0b | 574 | if (!loadLCDFile (f, cfname)) |
616915dd | 575 | { |
576 | if (!loadStandardState ()) | |
577 | { | |
578 | ctype_initTable (); | |
579 | } | |
580 | } | |
581 | ||
582 | check (fclose (f) == 0); | |
583 | } | |
584 | ||
28bf4b0b | 585 | /* usymtab_printAll (); */ |
586 | cstring_free (fname); | |
616915dd | 587 | } |
588 |