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616915dd | 1 | /* |
11db3170 | 2 | ** Splint - annotation-assisted static program checker |
77d37419 | 3 | ** Copyright (C) 1994-2002 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 | |
11db3170 | 22 | ** For more information: http://www.splint.org |
616915dd | 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" | |
616915dd | 36 | # include "osd.h" |
37 | ||
38 | # ifndef NOLCL | |
39 | # include "gram.h" | |
40 | ||
41 | # include "lclscan.h" | |
42 | # endif | |
43 | ||
616915dd | 44 | # include "lcllib.h" |
45 | # include "llmain.h" | |
46 | # include "portab.h" | |
47 | ||
48 | /*@-incondefs@*/ /*@-redecl@*/ | |
15b3d2b2 | 49 | extern /*:open:*/ /*@dependent@*/ FILE *yyin; |
616915dd | 50 | /*@=incondefs@*/ /*@=redecl@*/ |
51 | ||
52 | /*@constant int NUMLIBS; @*/ | |
53 | # define NUMLIBS 17 | |
54 | ||
55 | /*@constant int NUMPOSIXLIBS; @*/ | |
d1eb0f0f | 56 | # define NUMPOSIXLIBS 18 |
616915dd | 57 | |
58 | static ob_mstring posixlibs[NUMPOSIXLIBS] = | |
59 | { | |
616915dd | 60 | "dirent", |
61 | "fcntl", | |
62 | "grp", | |
63 | "pwd", | |
b072092f | 64 | "regex", |
d1eb0f0f | 65 | "sys/stat", |
616915dd | 66 | "sys/times", |
d1eb0f0f | 67 | "sys/types", |
68 | "netdb", /* unix */ | |
69 | "netinet/in", /* unix */ | |
70 | "sys/resource", /* unix */ | |
71 | "sys/socket", /* not posix */ | |
72 | "sys/syslog", /* not posix */ | |
616915dd | 73 | "sys/utsname", |
74 | "sys/wait", | |
75 | "termios", | |
76 | "unistd", | |
77 | "utime" | |
78 | } ; | |
79 | ||
80 | static ob_mstring stdlibs[NUMLIBS] = | |
81 | { | |
82 | "assert", | |
83 | "ctype", | |
84 | "errno", | |
85 | "float", | |
86 | "limits", | |
87 | "locale", | |
88 | "math", | |
89 | "setjmp", | |
90 | "signal", | |
91 | "stdarg", | |
92 | "stddef", | |
93 | "stdio", | |
94 | "stdlib", | |
95 | "strings", | |
96 | "string", | |
97 | "time", | |
98 | "wchar" | |
99 | } ; | |
100 | ||
28bf4b0b | 101 | static bool loadLCDFile (FILE * p_f, cstring p_name); |
616915dd | 102 | |
103 | bool | |
104 | lcllib_isSkipHeader (cstring sname) | |
105 | { | |
106 | int i; | |
107 | bool posixlib = FALSE; | |
108 | char *libname; | |
616915dd | 109 | char *matchname; |
28bf4b0b | 110 | cstring xname; |
616915dd | 111 | |
112 | llassert (cstring_isDefined (sname)); | |
28bf4b0b | 113 | xname = fileLib_withoutExtension (sname, cstring_makeLiteralTemp (".h")); |
616915dd | 114 | |
d1eb0f0f | 115 | DPRINTF (("Include? %s", sname)); |
116 | ||
28bf4b0b | 117 | /*@access cstring@*/ |
118 | llassert (cstring_isDefined (xname)); | |
119 | libname = strrchr (xname, CONNECTCHAR); | |
616915dd | 120 | matchname = libname; |
121 | ||
122 | if (libname == NULL) | |
123 | { | |
28bf4b0b | 124 | libname = xname; |
616915dd | 125 | } |
126 | else | |
127 | { | |
128 | libname++; | |
129 | /*@-branchstate@*/ | |
130 | } | |
131 | /*@=branchstate@*/ | |
132 | ||
133 | if (mstring_equal (libname, "varargs")) | |
134 | { | |
135 | fileloc tmp = fileloc_makePreprocPrevious (g_currentloc); | |
136 | ||
137 | voptgenerror | |
138 | (FLG_USEVARARGS, | |
1d239d69 | 139 | message ("Include file <%s.h> is inconsistent with " |
616915dd | 140 | "ANSI library (should use <stdarg.h>)", |
141 | cstring_fromChars (libname)), | |
142 | tmp); | |
143 | ||
144 | fileloc_free (tmp); | |
7ebcc5bb | 145 | cstring_free (xname); |
616915dd | 146 | return TRUE; |
147 | } | |
148 | ||
149 | if (context_getFlag (FLG_SKIPANSIHEADERS) | |
150 | && context_usingAnsiLibrary ()) | |
151 | { | |
152 | ||
153 | for (i = 0; i < NUMLIBS; i++) | |
154 | { | |
155 | if (mstring_equal (libname, stdlibs[i])) | |
156 | { | |
28bf4b0b | 157 | sfree (xname); |
616915dd | 158 | return TRUE; |
159 | } | |
160 | } | |
161 | } | |
162 | ||
163 | for (i = 0; i < NUMPOSIXLIBS; i++) | |
164 | { | |
165 | if (strchr (posixlibs[i], CONNECTCHAR) != NULL) | |
166 | { | |
167 | char *ptr; | |
168 | ||
28bf4b0b | 169 | if ((ptr = strstr (xname, posixlibs[i])) != NULL) |
616915dd | 170 | { |
171 | if (ptr[strlen (posixlibs[i])] == '\0') | |
172 | { | |
173 | posixlib = TRUE; | |
174 | matchname = ptr; | |
175 | break; | |
176 | } | |
177 | else | |
178 | { | |
179 | ; /* no match */ | |
180 | } | |
181 | } | |
182 | } | |
183 | else | |
184 | { | |
185 | if (mstring_equal (libname, posixlibs[i])) | |
186 | { | |
187 | posixlib = TRUE; | |
188 | matchname = libname; | |
189 | break; | |
190 | } | |
191 | /*@-branchstate@*/ | |
192 | } | |
193 | } /*@=branchstate@*/ | |
194 | ||
195 | if (posixlib) | |
196 | { | |
197 | if (context_usingPosixLibrary ()) | |
198 | { | |
199 | if (context_getFlag (FLG_SKIPPOSIXHEADERS)) | |
200 | { | |
7ebcc5bb | 201 | cstring_free (xname); |
616915dd | 202 | return TRUE; |
203 | } | |
204 | } | |
205 | else | |
206 | { | |
207 | fileloc tmp = fileloc_makePreprocPrevious (g_currentloc); | |
208 | ||
209 | voptgenerror | |
210 | (FLG_WARNPOSIX, | |
1d239d69 | 211 | message ("Include file <%s.h> matches the name of a " |
616915dd | 212 | "POSIX library, but the POSIX library is " |
213 | "not being used. Consider using +posixlib " | |
214 | "or +posixstrictlib to select the POSIX " | |
215 | "library, or -warnposix " | |
216 | "to suppress this message.", | |
217 | cstring_fromChars (matchname)), | |
218 | tmp); | |
219 | ||
220 | fileloc_free (tmp); | |
221 | } | |
222 | } | |
223 | ||
28bf4b0b | 224 | cstring_free (xname); |
225 | /*@noaccess cstring@*/ | |
616915dd | 226 | return FALSE; |
227 | } | |
228 | ||
229 | static void printDot (void) | |
230 | { | |
231 | if (context_getFlag (FLG_SHOWSCAN)) | |
232 | { | |
233 | (void) fflush (g_msgstream); | |
234 | fprintf (stderr, "."); | |
235 | (void) fflush (stderr); | |
236 | } | |
237 | } | |
238 | ||
239 | void | |
240 | dumpState (cstring cfname) | |
241 | { | |
242 | FILE *f; | |
28bf4b0b | 243 | cstring fname = fileLib_addExtension (cfname, cstring_makeLiteralTemp (DUMP_SUFFIX)); |
616915dd | 244 | |
dfd82dce | 245 | f = fileTable_openFile (context_fileTable (), fname, "w"); |
616915dd | 246 | |
247 | if (context_getFlag (FLG_SHOWSCAN)) | |
248 | { | |
28bf4b0b | 249 | fprintf (stderr, "< Dumping to %s ", cstring_toCharsSafe (fname)); |
616915dd | 250 | } |
251 | ||
252 | if (f == NULL) | |
253 | { | |
efd360a3 | 254 | lldiagmsg (message ("Cannot open dump file for writing: %s", fname)); |
616915dd | 255 | } |
256 | else | |
257 | { | |
258 | /* | |
259 | ** sequence is convulted --- must call usymtab_prepareDump before | |
260 | ** dumping ctype table to convert type uid's | |
261 | */ | |
262 | ||
263 | printDot (); | |
264 | ||
28bf4b0b | 265 | /* |
266 | DPRINTF (("Before prepare dump:")); | |
267 | ctype_printTable (); | |
268 | DPRINTF (("Preparing dump...")); | |
269 | */ | |
270 | ||
616915dd | 271 | usymtab_prepareDump (); |
272 | ||
273 | /* | |
28bf4b0b | 274 | ** Be careful, these lines must match loadLCDFile checking. |
616915dd | 275 | */ |
276 | ||
11db3170 | 277 | fprintf (f, "%s %s\n", LIBRARY_MARKER, cstring_toCharsSafe (fname)); |
60868d40 | 278 | fprintf (f, ";;%s\n", SPLINT_VERSION); |
616915dd | 279 | fprintf (f, ";;lib:%d\n", (int) context_getLibrary ()); |
280 | fprintf (f, ";;ctTable\n"); | |
28bf4b0b | 281 | |
282 | DPRINTF (("Dumping types...")); | |
616915dd | 283 | printDot (); |
28bf4b0b | 284 | ctype_dumpTable (f); |
616915dd | 285 | printDot (); |
28bf4b0b | 286 | |
287 | DPRINTF (("Dumping type sets...")); | |
616915dd | 288 | fprintf (f, ";;tistable\n"); |
289 | typeIdSet_dumpTable (f); | |
290 | printDot (); | |
28bf4b0b | 291 | |
292 | DPRINTF (("Dumping usymtab...")); | |
293 | fprintf (f, ";;symTable\n"); | |
616915dd | 294 | usymtab_dump (f); |
295 | printDot (); | |
296 | ||
28bf4b0b | 297 | DPRINTF (("Dumping modules...")); |
616915dd | 298 | fprintf (f, ";; Modules access\n"); |
299 | context_dumpModuleAccess (f); | |
300 | fprintf (f, ";;End\n"); | |
dfd82dce | 301 | check (fileTable_closeFile (context_fileTable (), f)); |
616915dd | 302 | } |
303 | ||
304 | if (context_getFlag (FLG_SHOWSCAN)) | |
305 | { | |
306 | fprintf (g_msgstream, " >\n"); | |
307 | } | |
308 | ||
28bf4b0b | 309 | cstring_free (fname); |
616915dd | 310 | } |
311 | ||
312 | bool | |
313 | loadStandardState () | |
314 | { | |
28bf4b0b | 315 | cstring fpath; |
616915dd | 316 | FILE *stdlib; |
317 | bool result; | |
28bf4b0b | 318 | cstring libname = fileLib_addExtension (context_selectedLibrary (), |
319 | cstring_makeLiteralTemp (DUMP_SUFFIX)); | |
616915dd | 320 | |
321 | if (osd_findOnLarchPath (libname, &fpath) != OSD_FILEFOUND) | |
322 | { | |
323 | lldiagmsg (message ("Cannot find %sstandard library: %s", | |
324 | cstring_makeLiteralTemp | |
325 | (context_getFlag (FLG_STRICTLIB) ? "strict " | |
326 | : (context_getFlag (FLG_UNIXLIB) ? "unix " : "")), | |
28bf4b0b | 327 | libname)); |
616915dd | 328 | lldiagmsg (cstring_makeLiteral (" Check LARCH_PATH environment variable.")); |
329 | result = FALSE; | |
330 | } | |
331 | else | |
332 | { | |
dfd82dce | 333 | stdlib = fileTable_openFile (context_fileTable (), fpath, "r"); |
616915dd | 334 | |
335 | if (stdlib == NULL) | |
336 | { | |
337 | lldiagmsg (message ("Cannot read standard library: %s", | |
28bf4b0b | 338 | fpath)); |
616915dd | 339 | lldiagmsg (cstring_makeLiteral (" Check LARCH_PATH environment variable.")); |
340 | ||
341 | result = FALSE; | |
342 | } | |
343 | else | |
344 | { | |
345 | if (context_getFlag (FLG_WHICHLIB)) | |
346 | { | |
347 | char *t = mstring_create (MAX_NAME_LENGTH); | |
348 | char *ot = t; | |
349 | ||
28bf4b0b | 350 | if ((t = reader_readLine (stdlib, t, MAX_NAME_LENGTH)) == NULL) |
616915dd | 351 | { |
352 | llfatalerror (cstring_makeLiteral ("Standard library format invalid")); | |
353 | } | |
354 | ||
28bf4b0b | 355 | if ((t = reader_readLine (stdlib, t, MAX_NAME_LENGTH)) != NULL) |
616915dd | 356 | { |
357 | if (*t == ';' && *(t + 1) == ';') | |
358 | { | |
359 | t += 2; | |
360 | } | |
361 | } | |
362 | ||
363 | if (t == NULL) | |
364 | { | |
365 | lldiagmsg (message ("Standard library: %s <cannot read creation information>", | |
28bf4b0b | 366 | fpath)); |
616915dd | 367 | } |
368 | else | |
369 | { | |
370 | char *tt; | |
371 | ||
372 | tt = strrchr (t, '\n'); | |
373 | if (tt != NULL) | |
374 | *tt = '\0'; | |
375 | ||
28bf4b0b | 376 | lldiagmsg (message ("Standard library: %s", fpath)); |
616915dd | 377 | lldiagmsg (message (" (created using %s)", cstring_fromChars (t))); |
378 | } | |
379 | ||
380 | sfree (ot); | |
381 | ||
dfd82dce | 382 | check (fileTable_closeFile (context_fileTable (), stdlib)); |
383 | stdlib = fileTable_openFile (context_fileTable (), fpath, "r"); | |
616915dd | 384 | } |
385 | ||
386 | llassert (stdlib != NULL); | |
387 | ||
388 | fileloc_reallyFree (g_currentloc); | |
28bf4b0b | 389 | g_currentloc = fileloc_createLib (libname); |
390 | ||
391 | DPRINTF (("Loading: %s", fpath)); | |
616915dd | 392 | |
393 | if (context_getDebug (FLG_SHOWSCAN)) | |
394 | { | |
28bf4b0b | 395 | fprintf (g_msgstream, "< loading standard library %s ", |
396 | cstring_toCharsSafe (fpath)); | |
397 | result = loadLCDFile (stdlib, fpath); | |
398 | fprintf (g_msgstream, " >\n"); | |
616915dd | 399 | } |
400 | else | |
401 | { | |
28bf4b0b | 402 | result = loadLCDFile (stdlib, fpath); |
616915dd | 403 | } |
404 | ||
dfd82dce | 405 | check (fileTable_closeFile (context_fileTable (), stdlib)); |
616915dd | 406 | } |
407 | } | |
408 | ||
28bf4b0b | 409 | cstring_free (libname); |
616915dd | 410 | return result; |
411 | } | |
412 | ||
413 | /*@constant int BUFLEN;@*/ | |
414 | # define BUFLEN 128 | |
415 | ||
416 | static bool | |
28bf4b0b | 417 | loadLCDFile (FILE *f, cstring name) |
616915dd | 418 | { |
419 | char buf[BUFLEN]; | |
420 | ||
421 | /* | |
28bf4b0b | 422 | ** Check version. Should be >= LCLINT_LIBVERSION |
616915dd | 423 | */ |
424 | ||
28bf4b0b | 425 | if (reader_readLine (f, buf, BUFLEN) == NULL |
11db3170 | 426 | || !mstring_equalPrefix (buf, LIBRARY_MARKER)) |
616915dd | 427 | { |
11db3170 | 428 | loadllmsg (message ("Load library %s is not in Splint library format. Attempting " |
28bf4b0b | 429 | "to continue without library.", name)); |
616915dd | 430 | return FALSE; |
431 | } | |
432 | ||
28bf4b0b | 433 | if (reader_readLine (f, buf, BUFLEN) != NULL) |
616915dd | 434 | { |
435 | if (!mstring_equalPrefix (buf, ";;")) | |
436 | { | |
11db3170 | 437 | loadllmsg (message ("Load library %s is not in Splint library format. Attempting " |
28bf4b0b | 438 | "to continue without library.", name)); |
616915dd | 439 | return FALSE; |
440 | } | |
441 | else if (mstring_equalPrefix (buf, ";;ctTable")) | |
442 | { | |
11db3170 | 443 | loadllmsg (message ("Load library %s is in obsolete Splint library format. Attempting " |
28bf4b0b | 444 | "to continue anyway, but results may be incorrect. Rebuild " |
445 | "the library with this version of lclint.", | |
446 | name)); | |
616915dd | 447 | } |
448 | else | |
449 | { | |
450 | float version = 0.0; | |
451 | ||
11db3170 | 452 | if (sscanf (buf, ";;Splint %f", &version) != 1 |
453 | && (sscanf (buf, ";;LCLint %f", &version) != 1)) | |
616915dd | 454 | { |
11db3170 | 455 | loadllmsg (message ("Load library %s is not in Splint 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 | { |
11db3170 | 481 | loadllmsg (message ("Load library %s is not in Splint library " |
616915dd | 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 | { | |
11db3170 | 492 | loadllmsg (message ("Load library %s is not in Splint library " |
616915dd | 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 | { | |
11db3170 | 525 | loadllmsg (message ("Load library %s is not in Splint library format (missing lines). " |
616915dd | 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 |