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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 | ||
616915dd | 45 | # include "lcllib.h" |
46 | # include "llmain.h" | |
47 | # include "portab.h" | |
48 | ||
49 | /*@-incondefs@*/ /*@-redecl@*/ | |
15b3d2b2 | 50 | extern /*:open:*/ /*@dependent@*/ FILE *yyin; |
616915dd | 51 | /*@=incondefs@*/ /*@=redecl@*/ |
52 | ||
53 | /*@constant int NUMLIBS; @*/ | |
54 | # define NUMLIBS 17 | |
55 | ||
56 | /*@constant int NUMPOSIXLIBS; @*/ | |
d1eb0f0f | 57 | # define NUMPOSIXLIBS 18 |
616915dd | 58 | |
59 | static ob_mstring posixlibs[NUMPOSIXLIBS] = | |
60 | { | |
616915dd | 61 | "dirent", |
62 | "fcntl", | |
63 | "grp", | |
64 | "pwd", | |
b072092f | 65 | "regex", |
d1eb0f0f | 66 | "sys/stat", |
616915dd | 67 | "sys/times", |
d1eb0f0f | 68 | "sys/types", |
69 | "netdb", /* unix */ | |
70 | "netinet/in", /* unix */ | |
71 | "sys/resource", /* unix */ | |
72 | "sys/socket", /* not posix */ | |
73 | "sys/syslog", /* not posix */ | |
616915dd | 74 | "sys/utsname", |
75 | "sys/wait", | |
76 | "termios", | |
77 | "unistd", | |
78 | "utime" | |
79 | } ; | |
80 | ||
81 | static ob_mstring stdlibs[NUMLIBS] = | |
82 | { | |
83 | "assert", | |
84 | "ctype", | |
85 | "errno", | |
86 | "float", | |
87 | "limits", | |
88 | "locale", | |
89 | "math", | |
90 | "setjmp", | |
91 | "signal", | |
92 | "stdarg", | |
93 | "stddef", | |
94 | "stdio", | |
95 | "stdlib", | |
96 | "strings", | |
97 | "string", | |
98 | "time", | |
99 | "wchar" | |
100 | } ; | |
101 | ||
28bf4b0b | 102 | static bool loadLCDFile (FILE * p_f, cstring p_name); |
616915dd | 103 | |
104 | bool | |
105 | lcllib_isSkipHeader (cstring sname) | |
106 | { | |
107 | int i; | |
108 | bool posixlib = FALSE; | |
109 | char *libname; | |
616915dd | 110 | char *matchname; |
28bf4b0b | 111 | cstring xname; |
616915dd | 112 | |
113 | llassert (cstring_isDefined (sname)); | |
28bf4b0b | 114 | xname = fileLib_withoutExtension (sname, cstring_makeLiteralTemp (".h")); |
616915dd | 115 | |
d1eb0f0f | 116 | DPRINTF (("Include? %s", sname)); |
117 | ||
28bf4b0b | 118 | /*@access cstring@*/ |
119 | llassert (cstring_isDefined (xname)); | |
120 | libname = strrchr (xname, CONNECTCHAR); | |
616915dd | 121 | matchname = libname; |
122 | ||
123 | if (libname == NULL) | |
124 | { | |
28bf4b0b | 125 | libname = xname; |
616915dd | 126 | } |
127 | else | |
128 | { | |
129 | libname++; | |
130 | /*@-branchstate@*/ | |
131 | } | |
132 | /*@=branchstate@*/ | |
133 | ||
134 | if (mstring_equal (libname, "varargs")) | |
135 | { | |
136 | fileloc tmp = fileloc_makePreprocPrevious (g_currentloc); | |
137 | ||
138 | voptgenerror | |
139 | (FLG_USEVARARGS, | |
1d239d69 | 140 | message ("Include file <%s.h> is inconsistent with " |
616915dd | 141 | "ANSI library (should use <stdarg.h>)", |
142 | cstring_fromChars (libname)), | |
143 | tmp); | |
144 | ||
145 | fileloc_free (tmp); | |
7ebcc5bb | 146 | cstring_free (xname); |
616915dd | 147 | return TRUE; |
148 | } | |
149 | ||
150 | if (context_getFlag (FLG_SKIPANSIHEADERS) | |
151 | && context_usingAnsiLibrary ()) | |
152 | { | |
153 | ||
154 | for (i = 0; i < NUMLIBS; i++) | |
155 | { | |
156 | if (mstring_equal (libname, stdlibs[i])) | |
157 | { | |
28bf4b0b | 158 | sfree (xname); |
616915dd | 159 | return TRUE; |
160 | } | |
161 | } | |
162 | } | |
163 | ||
164 | for (i = 0; i < NUMPOSIXLIBS; i++) | |
165 | { | |
166 | if (strchr (posixlibs[i], CONNECTCHAR) != NULL) | |
167 | { | |
168 | char *ptr; | |
169 | ||
28bf4b0b | 170 | if ((ptr = strstr (xname, posixlibs[i])) != NULL) |
616915dd | 171 | { |
172 | if (ptr[strlen (posixlibs[i])] == '\0') | |
173 | { | |
174 | posixlib = TRUE; | |
175 | matchname = ptr; | |
176 | break; | |
177 | } | |
178 | else | |
179 | { | |
180 | ; /* no match */ | |
181 | } | |
182 | } | |
183 | } | |
184 | else | |
185 | { | |
186 | if (mstring_equal (libname, posixlibs[i])) | |
187 | { | |
188 | posixlib = TRUE; | |
189 | matchname = libname; | |
190 | break; | |
191 | } | |
192 | /*@-branchstate@*/ | |
193 | } | |
194 | } /*@=branchstate@*/ | |
195 | ||
196 | if (posixlib) | |
197 | { | |
198 | if (context_usingPosixLibrary ()) | |
199 | { | |
200 | if (context_getFlag (FLG_SKIPPOSIXHEADERS)) | |
201 | { | |
7ebcc5bb | 202 | cstring_free (xname); |
616915dd | 203 | return TRUE; |
204 | } | |
205 | } | |
206 | else | |
207 | { | |
208 | fileloc tmp = fileloc_makePreprocPrevious (g_currentloc); | |
209 | ||
210 | voptgenerror | |
211 | (FLG_WARNPOSIX, | |
1d239d69 | 212 | message ("Include file <%s.h> matches the name of a " |
616915dd | 213 | "POSIX library, but the POSIX library is " |
214 | "not being used. Consider using +posixlib " | |
215 | "or +posixstrictlib to select the POSIX " | |
216 | "library, or -warnposix " | |
217 | "to suppress this message.", | |
218 | cstring_fromChars (matchname)), | |
219 | tmp); | |
220 | ||
221 | fileloc_free (tmp); | |
222 | } | |
223 | } | |
224 | ||
28bf4b0b | 225 | cstring_free (xname); |
226 | /*@noaccess cstring@*/ | |
616915dd | 227 | return FALSE; |
228 | } | |
229 | ||
230 | static void printDot (void) | |
231 | { | |
232 | if (context_getFlag (FLG_SHOWSCAN)) | |
233 | { | |
234 | (void) fflush (g_msgstream); | |
235 | fprintf (stderr, "."); | |
236 | (void) fflush (stderr); | |
237 | } | |
238 | } | |
239 | ||
240 | void | |
241 | dumpState (cstring cfname) | |
242 | { | |
243 | FILE *f; | |
28bf4b0b | 244 | cstring fname = fileLib_addExtension (cfname, cstring_makeLiteralTemp (DUMP_SUFFIX)); |
616915dd | 245 | |
dfd82dce | 246 | f = fileTable_openFile (context_fileTable (), fname, "w"); |
616915dd | 247 | |
248 | if (context_getFlag (FLG_SHOWSCAN)) | |
249 | { | |
28bf4b0b | 250 | fprintf (stderr, "< Dumping to %s ", cstring_toCharsSafe (fname)); |
616915dd | 251 | } |
252 | ||
253 | if (f == NULL) | |
254 | { | |
efd360a3 | 255 | lldiagmsg (message ("Cannot open dump file for writing: %s", fname)); |
616915dd | 256 | } |
257 | else | |
258 | { | |
259 | /* | |
260 | ** sequence is convulted --- must call usymtab_prepareDump before | |
261 | ** dumping ctype table to convert type uid's | |
262 | */ | |
263 | ||
264 | printDot (); | |
265 | ||
28bf4b0b | 266 | /* |
267 | DPRINTF (("Before prepare dump:")); | |
268 | ctype_printTable (); | |
269 | DPRINTF (("Preparing dump...")); | |
270 | */ | |
271 | ||
616915dd | 272 | usymtab_prepareDump (); |
273 | ||
274 | /* | |
28bf4b0b | 275 | ** Be careful, these lines must match loadLCDFile checking. |
616915dd | 276 | */ |
277 | ||
28bf4b0b | 278 | fprintf (f, ";;LCLint Dump: %s\n", cstring_toCharsSafe (fname)); |
616915dd | 279 | fprintf (f, ";;%s\n", LCL_VERSION); |
280 | fprintf (f, ";;lib:%d\n", (int) context_getLibrary ()); | |
281 | fprintf (f, ";;ctTable\n"); | |
28bf4b0b | 282 | |
283 | DPRINTF (("Dumping types...")); | |
616915dd | 284 | printDot (); |
28bf4b0b | 285 | ctype_dumpTable (f); |
616915dd | 286 | printDot (); |
28bf4b0b | 287 | |
288 | DPRINTF (("Dumping type sets...")); | |
616915dd | 289 | fprintf (f, ";;tistable\n"); |
290 | typeIdSet_dumpTable (f); | |
291 | printDot (); | |
28bf4b0b | 292 | |
293 | DPRINTF (("Dumping usymtab...")); | |
294 | fprintf (f, ";;symTable\n"); | |
616915dd | 295 | usymtab_dump (f); |
296 | printDot (); | |
297 | ||
28bf4b0b | 298 | DPRINTF (("Dumping modules...")); |
616915dd | 299 | fprintf (f, ";; Modules access\n"); |
300 | context_dumpModuleAccess (f); | |
301 | fprintf (f, ";;End\n"); | |
dfd82dce | 302 | check (fileTable_closeFile (context_fileTable (), f)); |
616915dd | 303 | } |
304 | ||
305 | if (context_getFlag (FLG_SHOWSCAN)) | |
306 | { | |
307 | fprintf (g_msgstream, " >\n"); | |
308 | } | |
309 | ||
28bf4b0b | 310 | cstring_free (fname); |
616915dd | 311 | } |
312 | ||
313 | bool | |
314 | loadStandardState () | |
315 | { | |
28bf4b0b | 316 | cstring fpath; |
616915dd | 317 | FILE *stdlib; |
318 | bool result; | |
28bf4b0b | 319 | cstring libname = fileLib_addExtension (context_selectedLibrary (), |
320 | cstring_makeLiteralTemp (DUMP_SUFFIX)); | |
616915dd | 321 | |
322 | if (osd_findOnLarchPath (libname, &fpath) != OSD_FILEFOUND) | |
323 | { | |
324 | lldiagmsg (message ("Cannot find %sstandard library: %s", | |
325 | cstring_makeLiteralTemp | |
326 | (context_getFlag (FLG_STRICTLIB) ? "strict " | |
327 | : (context_getFlag (FLG_UNIXLIB) ? "unix " : "")), | |
28bf4b0b | 328 | libname)); |
616915dd | 329 | lldiagmsg (cstring_makeLiteral (" Check LARCH_PATH environment variable.")); |
330 | result = FALSE; | |
331 | } | |
332 | else | |
333 | { | |
dfd82dce | 334 | stdlib = fileTable_openFile (context_fileTable (), fpath, "r"); |
616915dd | 335 | |
336 | if (stdlib == NULL) | |
337 | { | |
338 | lldiagmsg (message ("Cannot read standard library: %s", | |
28bf4b0b | 339 | fpath)); |
616915dd | 340 | lldiagmsg (cstring_makeLiteral (" Check LARCH_PATH environment variable.")); |
341 | ||
342 | result = FALSE; | |
343 | } | |
344 | else | |
345 | { | |
346 | if (context_getFlag (FLG_WHICHLIB)) | |
347 | { | |
348 | char *t = mstring_create (MAX_NAME_LENGTH); | |
349 | char *ot = t; | |
350 | ||
28bf4b0b | 351 | if ((t = reader_readLine (stdlib, t, MAX_NAME_LENGTH)) == NULL) |
616915dd | 352 | { |
353 | llfatalerror (cstring_makeLiteral ("Standard library format invalid")); | |
354 | } | |
355 | ||
28bf4b0b | 356 | if ((t = reader_readLine (stdlib, t, MAX_NAME_LENGTH)) != NULL) |
616915dd | 357 | { |
358 | if (*t == ';' && *(t + 1) == ';') | |
359 | { | |
360 | t += 2; | |
361 | } | |
362 | } | |
363 | ||
364 | if (t == NULL) | |
365 | { | |
366 | lldiagmsg (message ("Standard library: %s <cannot read creation information>", | |
28bf4b0b | 367 | fpath)); |
616915dd | 368 | } |
369 | else | |
370 | { | |
371 | char *tt; | |
372 | ||
373 | tt = strrchr (t, '\n'); | |
374 | if (tt != NULL) | |
375 | *tt = '\0'; | |
376 | ||
28bf4b0b | 377 | lldiagmsg (message ("Standard library: %s", fpath)); |
616915dd | 378 | lldiagmsg (message (" (created using %s)", cstring_fromChars (t))); |
379 | } | |
380 | ||
381 | sfree (ot); | |
382 | ||
dfd82dce | 383 | check (fileTable_closeFile (context_fileTable (), stdlib)); |
384 | stdlib = fileTable_openFile (context_fileTable (), fpath, "r"); | |
616915dd | 385 | } |
386 | ||
387 | llassert (stdlib != NULL); | |
388 | ||
389 | fileloc_reallyFree (g_currentloc); | |
28bf4b0b | 390 | g_currentloc = fileloc_createLib (libname); |
391 | ||
392 | DPRINTF (("Loading: %s", fpath)); | |
616915dd | 393 | |
394 | if (context_getDebug (FLG_SHOWSCAN)) | |
395 | { | |
28bf4b0b | 396 | fprintf (g_msgstream, "< loading standard library %s ", |
397 | cstring_toCharsSafe (fpath)); | |
398 | result = loadLCDFile (stdlib, fpath); | |
399 | fprintf (g_msgstream, " >\n"); | |
616915dd | 400 | } |
401 | else | |
402 | { | |
28bf4b0b | 403 | result = loadLCDFile (stdlib, fpath); |
616915dd | 404 | } |
405 | ||
dfd82dce | 406 | check (fileTable_closeFile (context_fileTable (), stdlib)); |
616915dd | 407 | } |
408 | } | |
409 | ||
28bf4b0b | 410 | cstring_free (libname); |
616915dd | 411 | return result; |
412 | } | |
413 | ||
414 | /*@constant int BUFLEN;@*/ | |
415 | # define BUFLEN 128 | |
416 | ||
417 | static bool | |
28bf4b0b | 418 | loadLCDFile (FILE *f, cstring name) |
616915dd | 419 | { |
420 | char buf[BUFLEN]; | |
421 | ||
422 | /* | |
28bf4b0b | 423 | ** Check version. Should be >= LCLINT_LIBVERSION |
616915dd | 424 | */ |
425 | ||
28bf4b0b | 426 | if (reader_readLine (f, buf, BUFLEN) == NULL |
616915dd | 427 | || !mstring_equalPrefix (buf, ";;LCLint Dump:")) |
428 | { | |
429 | loadllmsg (message ("Load library %s is not in LCLint library format. Attempting " | |
28bf4b0b | 430 | "to continue without library.", name)); |
616915dd | 431 | return FALSE; |
432 | } | |
433 | ||
28bf4b0b | 434 | if (reader_readLine (f, buf, BUFLEN) != NULL) |
616915dd | 435 | { |
436 | if (!mstring_equalPrefix (buf, ";;")) | |
437 | { | |
438 | loadllmsg (message ("Load library %s is not in LCLint library format. Attempting " | |
28bf4b0b | 439 | "to continue without library.", name)); |
616915dd | 440 | return FALSE; |
441 | } | |
442 | else if (mstring_equalPrefix (buf, ";;ctTable")) | |
443 | { | |
444 | loadllmsg (message ("Load library %s is in obsolete LCLint library format. Attempting " | |
28bf4b0b | 445 | "to continue anyway, but results may be incorrect. Rebuild " |
446 | "the library with this version of lclint.", | |
447 | name)); | |
616915dd | 448 | } |
449 | else | |
450 | { | |
451 | float version = 0.0; | |
452 | ||
453 | if (sscanf (buf, ";;LCLint %f", &version) != 1) | |
454 | { | |
455 | loadllmsg (message ("Load library %s is not in LCLint library format (missing version " | |
28bf4b0b | 456 | "number). Attempting " |
457 | "to continue without library.", name)); | |
616915dd | 458 | return FALSE; |
459 | } | |
460 | else | |
461 | { | |
28bf4b0b | 462 | if ((LCLINT_LIBVERSION - version) >= FLT_EPSILON) |
616915dd | 463 | { |
464 | cstring vname; | |
465 | char *nl = strchr (buf, '\n'); | |
466 | ||
28bf4b0b | 467 | *nl = '\0'; |
616915dd | 468 | |
469 | vname = cstring_fromChars (buf + 9); | |
470 | ||
471 | loadllmsg (message ("Load library %s is in obsolete LCLint library " | |
472 | "format (version %s). Attempting " | |
473 | "to continue anyway, but results may be incorrect. Rebuild " | |
474 | "the library with this version of lclint.", | |
475 | name, vname)); | |
476 | } | |
477 | else | |
478 | { | |
28bf4b0b | 479 | if (reader_readLine (f, buf, BUFLEN) == NULL) |
616915dd | 480 | { |
481 | loadllmsg (message ("Load library %s is not in LCLint library " | |
482 | "format (missing library code). Attempting " | |
483 | "to continue without library.", name)); | |
484 | return FALSE; | |
485 | } | |
486 | else | |
487 | { | |
488 | int lib; | |
489 | ||
490 | if (sscanf (buf, ";;lib:%d", &lib) != 1) | |
491 | { | |
492 | loadllmsg (message ("Load library %s is not in LCLint library " | |
493 | "format (missing library code). Attempting " | |
494 | "to continue without library.", name)); | |
495 | return FALSE; | |
496 | } | |
497 | else | |
498 | { | |
499 | flagcode code = (flagcode) lib; | |
500 | ||
501 | if (flagcode_isLibraryFlag (code)) | |
502 | { | |
503 | if (context_doMerge ()) | |
504 | { | |
505 | context_setLibrary (code); | |
506 | } | |
507 | } | |
508 | else | |
509 | { | |
28bf4b0b | 510 | loadllmsg (message ("Load library %s has invalid library code (%s). " |
616915dd | 511 | "Attempting to continue without library.", |
28bf4b0b | 512 | name, |
513 | flagcode_unparse (code))); | |
616915dd | 514 | |
515 | return FALSE; | |
516 | } | |
517 | } | |
518 | } | |
519 | } | |
520 | } | |
521 | } | |
522 | } | |
523 | else | |
524 | { | |
525 | loadllmsg (message ("Load library %s is not in LCLint library format (missing lines). " | |
526 | "Attempting to continue without library.", name)); | |
527 | return FALSE; | |
528 | } | |
529 | ||
530 | ctype_loadTable (f); | |
531 | printDot (); | |
532 | ||
533 | typeIdSet_loadTable (f); | |
534 | printDot (); | |
535 | ||
536 | usymtab_load (f); | |
537 | printDot (); | |
538 | ||
539 | context_loadModuleAccess (f); | |
540 | printDot (); | |
541 | ||
542 | return TRUE; | |
543 | } | |
544 | ||
545 | /* | |
546 | ** load state from file created by dumpState | |
547 | */ | |
548 | ||
549 | void | |
550 | loadState (cstring cfname) | |
551 | { | |
552 | FILE *f; | |
28bf4b0b | 553 | cstring fname = fileLib_addExtension (cfname, cstring_makeLiteralTemp (DUMP_SUFFIX)); |
616915dd | 554 | |
dfd82dce | 555 | f = fileTable_openFile (context_fileTable (), fname, "r"); |
616915dd | 556 | |
557 | if (f == NULL) | |
558 | { | |
559 | if (context_getDebug (FLG_SHOWSCAN)) | |
560 | fprintf (g_msgstream, " >\n"); | |
561 | ||
28bf4b0b | 562 | llfatalerror (message ("Cannot open dump file for loading: %s", |
563 | fname)); | |
616915dd | 564 | } |
565 | else | |
566 | { | |
567 | fileloc_reallyFree (g_currentloc); | |
28bf4b0b | 568 | g_currentloc = fileloc_createLib (cfname); |
616915dd | 569 | |
28bf4b0b | 570 | if (!loadLCDFile (f, cfname)) |
616915dd | 571 | { |
572 | if (!loadStandardState ()) | |
573 | { | |
574 | ctype_initTable (); | |
575 | } | |
576 | } | |
577 | ||
dfd82dce | 578 | check (fileTable_closeFile (context_fileTable (), f)); |
616915dd | 579 | } |
580 | ||
28bf4b0b | 581 | /* usymtab_printAll (); */ |
582 | cstring_free (fname); | |
616915dd | 583 | } |
584 |