1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
|
/*
* whatis.c: search the index or whatis database(s) for words.
*
* Copyright (C) 1994, 1995 Graeme W. Wilford. (Wilf.)
* Copyright (C) 2001, 2002, 2003, 2004, 2006, 2007, 2008, 2009, 2010, 2011,
* 2012 Colin Watson.
*
* This file is part of man-db.
*
* man-db is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* man-db is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with man-db; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
* routines for whatis and apropos programs. Whatis looks up the
* keyword for the description, apropos searches the entire database
* for word matches.
*
* Mon Aug 8 20:35:30 BST 1994 Wilf. (G.Wilford@ee.surrey.ac.uk)
*
* CJW: Add more safety in the face of corrupted databases.
*/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif /* HAVE_CONFIG_H */
#include <assert.h>
#include <stdbool.h>
#include <stdlib.h>
#include <string.h>
#include <stdio.h>
#include <ctype.h>
#include <errno.h>
#include <unistd.h>
#include "gettext.h"
#include <locale.h>
#define _(String) gettext (String)
#define N_(String) gettext_noop (String)
#include <sys/types.h>
#include <sys/stat.h>
#include "regex.h"
#include "argp.h"
#include "attribute.h"
#include "dirname.h"
#include "error.h"
#include "gl_hash_set.h"
#include "gl_list.h"
#include "gl_xset.h"
#include "fnmatch.h"
#include "progname.h"
#include "xalloc.h"
#include "xvasprintf.h"
#include "manconfig.h"
#include "appendstr.h"
#include "cleanup.h"
#include "debug.h"
#include "fatal.h"
#include "filenames.h"
#include "glcontainers.h"
#include "pipeline.h"
#include "pathsearch.h"
#include "linelength.h"
#include "wordfnmatch.h"
#include "xregcomp.h"
#include "encodings.h"
#include "sandbox.h"
#include "util.h"
#include "mydbm.h"
#include "db_storage.h"
#include "convert.h"
#include "manp.h"
static gl_list_t manpathlist;
extern char *user_config_file;
static char **keywords;
static int num_keywords;
bool am_apropos;
int quiet = 1;
man_sandbox *sandbox;
static regex_t *preg;
static bool regex_opt;
static bool exact;
static bool wildcard;
static bool require_all;
static bool long_output;
static char **sections;
static char *manp = NULL;
static const char *alt_systems = "";
static const char *locale = NULL;
static char *multiple_locale = NULL, *internal_locale;
static gl_set_t display_seen = NULL;
const char *argp_program_version; /* initialised in main */
const char *argp_program_bug_address = PACKAGE_BUGREPORT;
error_t argp_err_exit_status = FAIL;
static const char args_doc[] = N_("KEYWORD...");
static const char apropos_doc[] = "\v" N_("The --regex option is enabled by default.");
static struct argp_option options[] = {
OPT ("debug", 'd', 0, N_("emit debugging messages")),
OPT ("verbose", 'v', 0, N_("print verbose warning messages")),
OPT ("regex", 'r', 0, N_("interpret each keyword as a regex"), 10),
/* apropos only */
OPT ("exact", 'e', 0, N_("search each keyword for exact match")),
OPT ("wildcard", 'w', 0, N_("the keyword(s) contain wildcards")),
/* apropos only */
OPT ("and", 'a', 0, N_("require all keywords to match"), 20),
OPT ("long", 'l', 0, N_("do not trim output to terminal width"), 30),
OPT ("sections", 's', N_("LIST"),
N_("search only these sections (colon-separated)"), 40),
OPT_ALIAS ("section", 0),
OPT ("systems", 'm', N_("SYSTEM"),
N_("use manual pages from other systems")),
OPT ("manpath", 'M', N_("PATH"),
N_("set search path for manual pages to PATH")),
OPT ("locale", 'L', N_("LOCALE"),
N_("define the locale for this search")),
OPT ("config-file", 'C', N_("FILE"),
N_("use this user configuration file")),
OPT_HIDDEN ("whatis", 'f'),
OPT_HIDDEN ("apropos", 'k'),
OPT_HELP_COMPAT,
{ 0 }
};
static char **split_sections (const char *sections_str)
{
int i = 0;
char *str = xstrdup (sections_str);
const char *section;
char **out = NULL;
/* Although this is documented as colon-separated, at least Solaris
* man's -s option takes a comma-separated list, so we accept that
* too for compatibility.
*/
for (section = strtok (str, ":,"); section;
section = strtok (NULL, ":,")) {
out = xnrealloc (out, i + 2, sizeof *out);
out[i++] = xstrdup (section);
}
if (i)
out[i] = NULL;
free (str);
return out;
}
static error_t parse_opt (int key, char *arg, struct argp_state *state)
{
switch (key) {
case 'd':
debug_level = true;
return 0;
case 'v':
quiet = 0;
return 0;
case 'r':
regex_opt = true;
return 0;
case 'e':
/* Only makes sense for apropos, but has
* historically been accepted by whatis anyway.
*/
regex_opt = false;
exact = true;
return 0;
case 'w':
regex_opt = false;
wildcard = true;
return 0;
case 'a':
if (am_apropos)
require_all = true;
else
argp_usage (state);
return 0;
case 'l':
long_output = true;
return 0;
case 's':
sections = split_sections (arg);
return 0;
case 'm':
alt_systems = arg;
return 0;
case 'M':
manp = xstrdup (arg);
return 0;
case 'L':
locale = arg;
return 0;
case 'C':
user_config_file = arg;
return 0;
case 'f':
/* helpful override if program name detection fails */
am_apropos = false;
return 0;
case 'k':
/* helpful override if program name detection fails */
am_apropos = true;
return 0;
case 'h':
argp_state_help (state, state->out_stream,
ARGP_HELP_STD_HELP &
~ARGP_HELP_PRE_DOC);
break;
case ARGP_KEY_ARGS:
keywords = state->argv + state->next;
num_keywords = state->argc - state->next;
return 0;
case ARGP_KEY_NO_ARGS:
/* Make sure that we have a keyword! */
printf (_("%s what?\n"), program_name);
exit (FAIL);
case ARGP_KEY_SUCCESS:
if (am_apropos && !exact && !wildcard)
regex_opt = true;
return 0;
}
return ARGP_ERR_UNKNOWN;
}
static char *help_filter (int key, const char *text, void *input MAYBE_UNUSED)
{
switch (key) {
case ARGP_KEY_HELP_PRE_DOC:
/* We have no pre-options help text, but the input
* text may contain header junk due to gettext ("").
*/
return NULL;
default:
return (char *) text;
}
}
static struct argp apropos_argp = { options, parse_opt, args_doc, apropos_doc,
0, help_filter };
static struct argp whatis_argp = { options, parse_opt, args_doc };
static char *locale_manpath (const char *manpath)
{
char *all_locales;
char *new_manpath;
if (multiple_locale && *multiple_locale) {
if (internal_locale && *internal_locale)
all_locales = xasprintf ("%s:%s", multiple_locale,
internal_locale);
else
all_locales = xstrdup (multiple_locale);
} else {
if (internal_locale && *internal_locale)
all_locales = xstrdup (internal_locale);
else
all_locales = NULL;
}
new_manpath = add_nls_manpaths (manpath, all_locales);
free (all_locales);
return new_manpath;
}
/* Do the old thing, if we cannot find the relevant database.
* This invokes grep once per argument; we can't do much about this because
* we need to know which arguments failed. The only way to speed this up
* would be to implement grep internally, but it hardly seems worth it for a
* legacy mechanism.
*/
static void use_grep (const char * const *pages, int num_pages, char *manpath,
bool *found)
{
char *whatis_file = xasprintf ("%s/whatis", manpath);
assert (whatis_file);
if (CAN_ACCESS (whatis_file, R_OK)) {
const char *flags;
int i;
if (am_apropos) {
if (regex_opt)
flags = get_def_user (
"apropos_regex_grep_flags",
APROPOS_REGEX_GREP_FLAGS);
else
flags = get_def_user ("apropos_grep_flags",
APROPOS_GREP_FLAGS);
} else
flags = get_def_user ("whatis_grep_flags",
WHATIS_GREP_FLAGS);
for (i = 0; i < num_pages; ++i) {
pipeline *grep_pl;
pipecmd *grep_cmd;
char *anchored_page;
if (am_apropos)
anchored_page = xstrdup (pages[i]);
else
anchored_page = xasprintf ("^%s", pages[i]);
grep_cmd = pipecmd_new_argstr
(get_def_user ("grep", PROG_GREP));
pipecmd_argstr (grep_cmd, flags);
pipecmd_args (grep_cmd, anchored_page, whatis_file,
(void *) 0);
pipecmd_pre_exec (grep_cmd, sandbox_load, sandbox_free,
sandbox);
grep_pl = pipeline_new_commands (grep_cmd, (void *) 0);
if (pipeline_run (grep_pl) == 0)
found[i] = true;
free (anchored_page);
}
} else
debug ("warning: can't read the fallback whatis text database "
"%s/whatis\n", manpath);
free (whatis_file);
}
static struct mandata *resolve_pointers (MYDBM_FILE dbf, struct mandata *info,
const char *page)
{
int rounds;
const char *newpage;
if (*(info->pointer) == '-' ||
((!info->name || STREQ (info->name, page)) &&
STREQ (info->pointer, page)))
return info;
/* Now we have to work through pointers. The limit of 10 is fairly
* arbitrary: it's just there to avoid an infinite loop.
*/
newpage = info->pointer;
info = dblookup_exact (dbf, newpage, info->ext, true);
for (rounds = 0; rounds < 10; rounds++) {
struct mandata *newinfo;
/* If the pointer lookup fails, do nothing. */
if (!info)
return NULL;
if (*(info->pointer) == '-' ||
((!info->name || STREQ (info->name, newpage)) &&
STREQ (info->pointer, newpage)))
return info;
newinfo = dblookup_exact (dbf, info->pointer, info->ext, true);
free_mandata_struct (info);
info = newinfo;
}
if (!quiet)
error (0, 0, _("warning: %s contains a pointer loop"), page);
return NULL;
}
/* fill_in_whatis() is really a ../libdb/db_lookup.c routine but whatis.c
is the only file that actually requires access to the whatis text... */
/* Take mandata struct (earlier returned from a dblookup()) and return
the relative whatis */
static char *get_whatis (struct mandata *info, const char *page)
{
if (!info)
return xstrdup (_("(unknown subject)"));
/* See if we need to fill in the whatis here. */
if (info->whatis != NULL && *(info->whatis))
return xstrdup (info->whatis);
if (!quiet && *(info->pointer) != '-')
error (0, 0, _("warning: %s contains a pointer loop"),
page);
return xstrdup (_("(unknown subject)"));
}
/* print out any matches found */
static void display (MYDBM_FILE dbf, struct mandata *info, const char *page)
{
struct mandata *newinfo;
char *string, *whatis, *string_conv;
const char *page_name;
char *key;
int line_len, rest;
newinfo = resolve_pointers (dbf, info, page);
whatis = get_whatis (newinfo, page);
if (newinfo == NULL)
newinfo = info;
dbprintf (newinfo);
if (newinfo->name)
page_name = newinfo->name;
else
page_name = page;
key = xasprintf ("%s (%s)", page_name, newinfo->ext);
if (gl_set_search (display_seen, key))
goto out;
gl_set_add (display_seen, xstrdup (key));
line_len = get_line_length ();
if (!long_output && strlen (page_name) > (size_t) (line_len / 2))
string = xasprintf ("%.*s...", line_len / 2 - 3, page_name);
else
string = xstrdup (page_name);
string = appendstr (string, " (", newinfo->ext, ")", (void *) 0);
if (!STREQ (newinfo->pointer, "-") && !STREQ (newinfo->pointer, page))
string = appendstr (string, " [", newinfo->pointer, "]",
(void *) 0);
if (strlen (string) < (size_t) 20) {
int i;
string = xrealloc (string, 21);
for (i = strlen (string); i < 20; ++i)
string[i] = ' ';
string[i] = '\0';
}
string = appendstr (string, " - ", (void *) 0);
rest = line_len - strlen (string);
if (!long_output && strlen (whatis) > (size_t) rest) {
whatis[rest - 3] = '\0';
string = appendstr (string, whatis, "...\n", (void *) 0);
} else
string = appendstr (string, whatis, "\n", (void *) 0);
string_conv = convert_to_locale (string);
fputs (string_conv, stdout);
free (string_conv);
free (string);
out:
free (key);
free (whatis);
if (newinfo != info)
free_mandata_struct (newinfo);
}
/* lookup the page and display the results */
static int do_whatis_section (MYDBM_FILE dbf,
const char *page, const char *section)
{
gl_list_t infos;
struct mandata *info;
int count = 0;
infos = dblookup_all (dbf, page, section, false);
GL_LIST_FOREACH (infos, info) {
display (dbf, info, page);
count++;
}
gl_list_free (infos);
return count;
}
static bool suitable_manpath (const char *manpath, const char *page_dir)
{
char *page_manp, *pm;
gl_list_t page_manpathlist;
bool ret;
page_manp = get_manpath_from_path (page_dir, false);
if (!page_manp || !*page_manp) {
free (page_manp);
return false;
}
pm = locale_manpath (page_manp);
free (page_manp);
page_manp = pm;
page_manpathlist = create_pathlist (page_manp);
ret = gl_list_search (page_manpathlist, manpath) ? true : false;
free_pathlist (page_manpathlist);
free (page_manp);
return ret;
}
static void do_whatis (MYDBM_FILE dbf,
const char * const *pages, int num_pages,
const char *manpath, bool *found)
{
int i;
for (i = 0; i < num_pages; ++i) {
char *page = xstrdup (pages[i]);
struct stat st;
if (strchr (page, '/') && stat (page, &st) == 0 &&
!S_ISDIR (st.st_mode) &&
st.st_mode & (S_IXUSR | S_IXGRP | S_IXOTH)) {
/* Perhaps an executable. If its directory is on
* $PATH, then we only want to process this page for
* matching manual hierarchies.
*/
char *page_dir = dir_name (page);
if (directory_on_path (page_dir)) {
if (suitable_manpath (manpath, page_dir)) {
char *old_page = page;
page = base_name (old_page);
free (old_page);
} else {
debug ("%s not on manpath for %s\n",
manpath, page);
free (page_dir);
free (page);
continue;
}
}
free (page_dir);
}
if (sections) {
char * const *section;
for (section = sections; *section; ++section) {
if (do_whatis_section (dbf, page, *section))
found[i] = true;
}
} else {
if (do_whatis_section (dbf, page, NULL))
found[i] = true;
}
free (page);
}
}
static bool any_set (int num_pages, bool *found_here)
{
int i;
for (i = 0; i < num_pages; ++i)
if (found_here[i])
return true;
return false;
}
static bool all_set (int num_pages, bool *found_here)
{
int i;
for (i = 0; i < num_pages; ++i)
if (!found_here[i])
return false;
return true;
}
static void parse_name (const char * const *pages, int num_pages,
const char *dbname, bool *found, bool *found_here)
{
int i;
if (regex_opt) {
for (i = 0; i < num_pages; ++i) {
if (regexec (&preg[i], dbname, 0,
(regmatch_t *) 0, 0) == 0)
found[i] = found_here[i] = true;
}
return;
}
if (am_apropos && !wildcard) {
for (i = 0; i < num_pages; ++i) {
if (strcasecmp (dbname, pages[i]) == 0)
found[i] = found_here[i] = true;
}
return;
}
for (i = 0; i < num_pages; ++i) {
if (fnmatch (pages[i], dbname, FNM_CASEFOLD) == 0)
found[i] = found_here[i] = true;
}
}
/* return true on word match */
static bool ATTRIBUTE_PURE match (const char *page, const char *whatis)
{
size_t len = strlen (page);
const char *begin;
char *p;
begin = whatis;
/* check for string match, then see if it is a _word_ */
while (whatis && (p = strcasestr (whatis, page))) {
char *left = p - 1;
char *right = p + len;
if ((p == begin || (!CTYPE (isalpha, *left) && *left != '_')) &&
(!*right || (!CTYPE (isalpha, *right) && *right != '_')))
return true;
whatis = p + 1;
}
return false;
}
static void parse_whatis (const char * const *pages, int num_pages,
const char *whatis, bool *found, bool *found_here)
{
int i;
if (regex_opt) {
for (i = 0; i < num_pages; ++i) {
if (regexec (&preg[i], whatis, 0,
(regmatch_t *) 0, 0) == 0)
found[i] = found_here[i] = true;
}
return;
}
if (wildcard) {
for (i = 0; i < num_pages; ++i) {
if (exact) {
if (fnmatch (pages[i], whatis, 0) == 0)
found[i] = found_here[i] = true;
} else {
if (word_fnmatch (pages[i], whatis))
found[i] = found_here[i] = true;
}
}
return;
}
for (i = 0; i < num_pages; ++i) {
if (match (pages[i], whatis))
found[i] = found_here[i] = true;
}
}
/* cjwatson: Optimized functions don't seem to be correct in some
* circumstances; disabled for now.
*/
#undef BTREE
/* scan for the page, print any matches */
static void do_apropos (MYDBM_FILE dbf,
const char * const *pages, int num_pages, bool *found)
{
datum key, cont;
bool *found_here;
bool (*combine) (int, bool *);
#ifndef BTREE
datum nextkey;
#else /* BTREE */
int end;
#endif /* !BTREE */
found_here = XNMALLOC (num_pages, bool);
combine = require_all ? all_set : any_set;
#ifndef BTREE
key = MYDBM_FIRSTKEY (dbf);
while (MYDBM_DPTR (key)) {
cont = MYDBM_FETCH (dbf, key);
#else /* BTREE */
end = man_btree_nextkeydata (dbf, &key, &cont);
while (!end) {
#endif /* !BTREE */
char *tab;
struct mandata *info = NULL;
/* bug#4372, NULL pointer dereference in MYDBM_DPTR (cont),
* fix by dassen@wi.leidenuniv.nl (J.H.M.Dassen), thanx Ray.
* cjwatson: In that case, complain and exit, otherwise we
* might loop (bug #95052).
*/
if (!MYDBM_DPTR (cont))
{
debug ("key was %s\n", MYDBM_DPTR (key));
fatal (0,
_("Database %s corrupted; rebuild with "
"mandb --create"),
dbf->name);
}
#pragma GCC diagnostic push
#if GNUC_PREREQ(10,0)
# pragma GCC diagnostic ignored "-Wanalyzer-use-after-free"
#endif
if (*MYDBM_DPTR (key) == '$')
goto nextpage;
if (*MYDBM_DPTR (cont) == '\t')
goto nextpage;
#pragma GCC diagnostic pop
/* a real page */
info = split_content (dbf, MYDBM_DPTR (cont));
/* If there are sections given, does any of them match
* either the section or extension of this page?
*/
if (sections) {
char * const *section;
bool matched = false;
for (section = sections; *section; ++section) {
if (STREQ (*section, info->sec) ||
STREQ (*section, info->ext)) {
matched = true;
break;
}
}
if (!matched)
goto nextpage;
}
tab = strrchr (MYDBM_DPTR (key), '\t');
if (tab)
*tab = '\0';
memset (found_here, 0, num_pages * sizeof (*found_here));
parse_name (pages, num_pages,
MYDBM_DPTR (key), found, found_here);
if (am_apropos) {
char *whatis;
whatis = info->whatis ? xstrdup (info->whatis) : NULL;
if (!combine (num_pages, found_here) && whatis)
parse_whatis (pages, num_pages,
whatis, found, found_here);
free (whatis);
}
if (combine (num_pages, found_here))
display (dbf, info, MYDBM_DPTR (key));
if (tab)
*tab = '\t';
nextpage:
#pragma GCC diagnostic push
#if GNUC_PREREQ(10,0)
# pragma GCC diagnostic ignored "-Wanalyzer-double-free"
#endif
#ifndef BTREE
nextkey = MYDBM_NEXTKEY (dbf, key);
MYDBM_FREE_DPTR (cont);
MYDBM_FREE_DPTR (key);
key = nextkey;
#else /* BTREE */
MYDBM_FREE_DPTR (cont);
MYDBM_FREE_DPTR (key);
end = man_btree_nextkeydata (dbf, &key, &cont);
#endif /* !BTREE */
#pragma GCC diagnostic pop
free_mandata_struct (info);
}
free (found_here);
}
/* loop through the man paths, searching for a match */
static bool search (const char * const *pages, int num_pages)
{
bool *found = XCALLOC (num_pages, bool);
char *mp;
bool any_found;
int i;
GL_LIST_FOREACH (manpathlist, mp) {
char *catpath, *database;
MYDBM_FILE dbf;
catpath = get_catpath (mp, SYSTEM_CAT | USER_CAT);
database = mkdbname (catpath ? catpath : mp);
debug ("path=%s\n", mp);
dbf = MYDBM_NEW (database);
if (!MYDBM_RDOPEN (dbf) || dbver_rd (dbf)) {
use_grep (pages, num_pages, mp, found);
goto next;
}
if (am_apropos)
do_apropos (dbf, pages, num_pages, found);
else {
if (regex_opt || wildcard)
do_apropos (dbf, pages, num_pages, found);
else
do_whatis (dbf, pages, num_pages, mp, found);
}
next:
MYDBM_FREE (dbf);
free (database);
free (catpath);
}
any_found = false;
for (i = 0; i < num_pages; ++i) {
if (found[i])
any_found = true;
else
fprintf (stderr, _("%s: nothing appropriate.\n"),
pages[i]);
}
free (found);
return any_found;
}
int main (int argc, char *argv[])
{
char *program_base_name;
int status = OK;
set_program_name (argv[0]);
program_base_name = base_name (program_name);
if (STREQ (program_base_name, APROPOS_NAME)) {
am_apropos = true;
argp_program_version = "apropos " PACKAGE_VERSION;
} else {
struct argp_option *optionp;
am_apropos = false;
argp_program_version = "whatis " PACKAGE_VERSION;
for (optionp = (struct argp_option *) whatis_argp.options;
optionp->name || optionp->key || optionp->arg ||
optionp->flags || optionp->doc || optionp->group;
++optionp) {
if (!optionp->name)
continue;
if (STREQ (optionp->name, "exact") ||
STREQ (optionp->name, "and"))
optionp->flags |= OPTION_HIDDEN;
}
}
free (program_base_name);
init_debug ();
pipeline_install_post_fork (pop_all_cleanups);
sandbox = sandbox_init ();
init_locale ();
internal_locale = setlocale (LC_MESSAGES, NULL);
/* Use LANGUAGE only when LC_MESSAGES locale category is
* neither "C" nor "POSIX". */
if (internal_locale && strcmp (internal_locale, "C") &&
strcmp (internal_locale, "POSIX"))
multiple_locale = getenv ("LANGUAGE");
internal_locale = xstrdup (internal_locale ? internal_locale : "C");
if (argp_parse (am_apropos ? &apropos_argp : &whatis_argp, argc, argv,
0, 0, 0))
exit (FAIL);
read_config_file (user_config_file != NULL);
/* close this locale and reinitialise if a new locale was
issued as an argument or in $MANOPT */
if (locale) {
free (internal_locale);
internal_locale = setlocale (LC_ALL, locale);
if (internal_locale)
internal_locale = xstrdup (internal_locale);
else
internal_locale = xstrdup (locale);
debug ("main(): locale = %s, internal_locale = %s\n",
locale, internal_locale);
if (internal_locale) {
setenv ("LANGUAGE", internal_locale, 1);
locale_changed ();
multiple_locale = NULL;
}
}
/* sort out the internal manpath */
if (manp == NULL)
manp = locale_manpath (get_manpath (alt_systems));
else
free (get_manpath (NULL));
manpathlist = create_pathlist (manp);
display_seen = new_string_set (GL_HASH_SET);
if (regex_opt) {
int i;
preg = XNMALLOC (num_keywords, regex_t);
for (i = 0; i < num_keywords; ++i)
xregcomp (&preg[i], keywords[i],
REG_EXTENDED | REG_NOSUB | REG_ICASE);
}
if (!search ((const char **) keywords, num_keywords))
status = NOT_FOUND;
if (regex_opt) {
int i;
for (i = 0; i < num_keywords; ++i)
regfree (&preg[i]);
free (preg);
}
gl_set_free (display_seen);
free_pathlist (manpathlist);
free (manp);
free (internal_locale);
sandbox_free (sandbox);
exit (status);
}
|