1 /* $Id: main.c,v 1.225 2015/03/10 13:50:03 schwarze Exp $ */
2 /*
3 * Copyright (c) 2008-2012 Kristaps Dzonsons <kristaps@bsd.lv>
4 * Copyright (c) 2010-2012, 2014, 2015 Ingo Schwarze <schwarze@openbsd.org>
5 * Copyright (c) 2010 Joerg Sonnenberger <joerg@netbsd.org>
6 *
7 * Permission to use, copy, modify, and distribute this software for any
8 * purpose with or without fee is hereby granted, provided that the above
9 * copyright notice and this permission notice appear in all copies.
10 *
11 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
12 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
13 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
14 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
15 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
16 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
17 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
18 */
19 #include "config.h"
20
21 #include <sys/types.h>
22 #include <sys/param.h> /* MACHINE */
23 #include <sys/wait.h>
24
25 #include <assert.h>
26 #include <ctype.h>
27 #include <errno.h>
28 #include <fcntl.h>
29 #include <glob.h>
30 #include <stdio.h>
31 #include <stdint.h>
32 #include <stdlib.h>
33 #include <string.h>
34 #include <unistd.h>
35
36 #include "mandoc.h"
37 #include "mandoc_aux.h"
38 #include "main.h"
39 #include "mdoc.h"
40 #include "man.h"
41 #include "manpath.h"
42 #include "mansearch.h"
43
44 #if !defined(__GNUC__) || (__GNUC__ < 2)
45 # if !defined(lint)
46 # define __attribute__(x)
47 # endif
48 #endif /* !defined(__GNUC__) || (__GNUC__ < 2) */
49
50 enum outmode {
51 OUTMODE_DEF = 0,
52 OUTMODE_FLN,
53 OUTMODE_LST,
54 OUTMODE_ALL,
55 OUTMODE_INT,
56 OUTMODE_ONE
57 };
58
59 typedef void (*out_mdoc)(void *, const struct mdoc *);
60 typedef void (*out_man)(void *, const struct man *);
61 typedef void (*out_free)(void *);
62
63 enum outt {
64 OUTT_ASCII = 0, /* -Tascii */
65 OUTT_LOCALE, /* -Tlocale */
66 OUTT_UTF8, /* -Tutf8 */
67 OUTT_TREE, /* -Ttree */
68 OUTT_MAN, /* -Tman */
69 OUTT_HTML, /* -Thtml */
70 OUTT_LINT, /* -Tlint */
71 OUTT_PS, /* -Tps */
72 OUTT_PDF /* -Tpdf */
73 };
74
75 struct curparse {
76 struct mparse *mp;
77 struct mchars *mchars; /* character table */
78 enum mandoclevel wlevel; /* ignore messages below this */
79 int wstop; /* stop after a file with a warning */
80 enum outt outtype; /* which output to use */
81 out_mdoc outmdoc; /* mdoc output ptr */
82 out_man outman; /* man output ptr */
83 out_free outfree; /* free output ptr */
84 void *outdata; /* data for output */
85 char outopts[BUFSIZ]; /* buf of output opts */
86 };
87
88 static int fs_lookup(const struct manpaths *,
89 size_t ipath, const char *,
90 const char *, const char *,
91 struct manpage **, size_t *);
92 static void fs_search(const struct mansearch *,
93 const struct manpaths *, int, char**,
94 struct manpage **, size_t *);
95 static int koptions(int *, char *);
96 #if HAVE_SQLITE3
97 int mandocdb(int, char**);
98 #endif
99 static int moptions(int *, char *);
100 static void mmsg(enum mandocerr, enum mandoclevel,
101 const char *, int, int, const char *);
102 static void parse(struct curparse *, int,
103 const char *, enum mandoclevel *);
104 static enum mandoclevel passthrough(const char *, int, int);
105 static pid_t spawn_pager(void);
106 static int toptions(struct curparse *, char *);
107 static void usage(enum argmode) __attribute__((noreturn));
108 static int woptions(struct curparse *, char *);
109
110 static const int sec_prios[] = {1, 4, 5, 8, 6, 3, 7, 2, 9};
111 static char help_arg[] = "help";
112 static char *help_argv[] = {help_arg, NULL};
113 static const char *progname;
114
115
116 int
main(int argc,char * argv[])117 main(int argc, char *argv[])
118 {
119 struct curparse curp;
120 struct mansearch search;
121 struct manpaths paths;
122 char *auxpaths;
123 char *defos;
124 unsigned char *uc;
125 struct manpage *res, *resp;
126 char *conf_file, *defpaths;
127 size_t isec, i, sz;
128 int prio, best_prio, synopsis_only;
129 char sec;
130 enum mandoclevel rc, rctmp;
131 enum outmode outmode;
132 int fd;
133 int show_usage;
134 int options;
135 int c;
136 pid_t pager_pid; /* 0: don't use; 1: not yet spawned. */
137
138 if (argc < 1)
139 progname = "mandoc";
140 else if ((progname = strrchr(argv[0], '/')) == NULL)
141 progname = argv[0];
142 else
143 ++progname;
144
145 #if HAVE_SQLITE3
146 if (strcmp(progname, BINM_MAKEWHATIS) == 0)
147 return(mandocdb(argc, argv));
148 #endif
149
150 /* Search options. */
151
152 memset(&paths, 0, sizeof(struct manpaths));
153 conf_file = defpaths = NULL;
154 auxpaths = NULL;
155
156 memset(&search, 0, sizeof(struct mansearch));
157 search.outkey = "Nd";
158
159 if (strcmp(progname, BINM_MAN) == 0)
160 search.argmode = ARG_NAME;
161 else if (strcmp(progname, BINM_APROPOS) == 0)
162 search.argmode = ARG_EXPR;
163 else if (strcmp(progname, BINM_WHATIS) == 0)
164 search.argmode = ARG_WORD;
165 else if (strncmp(progname, "help", 4) == 0)
166 search.argmode = ARG_NAME;
167 else
168 search.argmode = ARG_FILE;
169
170 /* Parser and formatter options. */
171
172 memset(&curp, 0, sizeof(struct curparse));
173 curp.outtype = OUTT_LOCALE;
174 curp.wlevel = MANDOCLEVEL_BADARG;
175 options = MPARSE_SO | MPARSE_UTF8 | MPARSE_LATIN1;
176 defos = NULL;
177
178 pager_pid = 1;
179 show_usage = 0;
180 synopsis_only = 0;
181 outmode = OUTMODE_DEF;
182
183 while (-1 != (c = getopt(argc, argv,
184 "aC:cfhI:iK:klM:m:O:S:s:T:VW:w"))) {
185 switch (c) {
186 case 'a':
187 outmode = OUTMODE_ALL;
188 break;
189 case 'C':
190 conf_file = optarg;
191 break;
192 case 'c':
193 pager_pid = 0;
194 break;
195 case 'f':
196 search.argmode = ARG_WORD;
197 break;
198 case 'h':
199 (void)strlcat(curp.outopts, "synopsis,", BUFSIZ);
200 synopsis_only = 1;
201 pager_pid = 0;
202 outmode = OUTMODE_ALL;
203 break;
204 case 'I':
205 if (strncmp(optarg, "os=", 3)) {
206 fprintf(stderr,
207 "%s: -I %s: Bad argument\n",
208 progname, optarg);
209 return((int)MANDOCLEVEL_BADARG);
210 }
211 if (defos) {
212 fprintf(stderr,
213 "%s: -I %s: Duplicate argument\n",
214 progname, optarg);
215 return((int)MANDOCLEVEL_BADARG);
216 }
217 defos = mandoc_strdup(optarg + 3);
218 break;
219 case 'i':
220 outmode = OUTMODE_INT;
221 break;
222 case 'K':
223 if ( ! koptions(&options, optarg))
224 return((int)MANDOCLEVEL_BADARG);
225 break;
226 case 'k':
227 search.argmode = ARG_EXPR;
228 break;
229 case 'l':
230 search.argmode = ARG_FILE;
231 outmode = OUTMODE_ALL;
232 break;
233 case 'M':
234 defpaths = optarg;
235 break;
236 case 'm':
237 auxpaths = optarg;
238 break;
239 case 'O':
240 search.outkey = optarg;
241 (void)strlcat(curp.outopts, optarg, BUFSIZ);
242 (void)strlcat(curp.outopts, ",", BUFSIZ);
243 break;
244 case 'S':
245 search.arch = optarg;
246 break;
247 case 's':
248 search.sec = optarg;
249 break;
250 case 'T':
251 if ( ! toptions(&curp, optarg))
252 return((int)MANDOCLEVEL_BADARG);
253 break;
254 case 'W':
255 if ( ! woptions(&curp, optarg))
256 return((int)MANDOCLEVEL_BADARG);
257 break;
258 case 'w':
259 outmode = OUTMODE_FLN;
260 break;
261 default:
262 show_usage = 1;
263 break;
264 }
265 }
266
267 if (show_usage)
268 usage(search.argmode);
269
270 /* Postprocess options. */
271
272 if (outmode == OUTMODE_DEF) {
273 switch (search.argmode) {
274 case ARG_FILE:
275 outmode = OUTMODE_ALL;
276 pager_pid = 0;
277 break;
278 case ARG_NAME:
279 outmode = OUTMODE_ONE;
280 break;
281 default:
282 outmode = OUTMODE_LST;
283 break;
284 }
285 }
286
287 /* Parse arguments. */
288
289 if (argc > 0) {
290 argc -= optind;
291 argv += optind;
292 }
293 resp = NULL;
294
295 /*
296 * Quirks for help(1)
297 * and for a man(1) section argument without -s.
298 */
299
300 if (search.argmode == ARG_NAME) {
301 if (*progname == 'h') {
302 if (argc == 0) {
303 argv = help_argv;
304 argc = 1;
305 }
306 } else if (argc > 1 &&
307 ((uc = (unsigned char *)argv[0]) != NULL) &&
308 ((isdigit(uc[0]) && (uc[1] == '\0' ||
309 (isalpha(uc[1]) && uc[2] == '\0'))) ||
310 (uc[0] == 'n' && uc[1] == '\0'))) {
311 search.sec = (char *)uc;
312 argv++;
313 argc--;
314 }
315 if (search.arch == NULL)
316 search.arch = getenv("MACHINE");
317 #ifdef MACHINE
318 if (search.arch == NULL)
319 search.arch = MACHINE;
320 #endif
321 }
322
323 rc = MANDOCLEVEL_OK;
324
325 /* man(1), whatis(1), apropos(1) */
326
327 if (search.argmode != ARG_FILE) {
328 if (argc == 0)
329 usage(search.argmode);
330
331 if (search.argmode == ARG_NAME &&
332 outmode == OUTMODE_ONE)
333 search.firstmatch = 1;
334
335 /* Access the mandoc database. */
336
337 manpath_parse(&paths, conf_file, defpaths, auxpaths);
338 #if HAVE_SQLITE3
339 mansearch_setup(1);
340 if( ! mansearch(&search, &paths, argc, argv, &res, &sz))
341 usage(search.argmode);
342 #else
343 if (search.argmode != ARG_NAME) {
344 fputs("mandoc: database support not compiled in\n",
345 stderr);
346 return((int)MANDOCLEVEL_BADARG);
347 }
348 sz = 0;
349 #endif
350
351 if (sz == 0 && search.argmode == ARG_NAME)
352 fs_search(&search, &paths, argc, argv, &res, &sz);
353
354 if (sz == 0) {
355 rc = MANDOCLEVEL_BADARG;
356 goto out;
357 }
358
359 /*
360 * For standard man(1) and -a output mode,
361 * prepare for copying filename pointers
362 * into the program parameter array.
363 */
364
365 if (outmode == OUTMODE_ONE) {
366 argc = 1;
367 best_prio = 10;
368 } else if (outmode == OUTMODE_ALL)
369 argc = (int)sz;
370
371 /* Iterate all matching manuals. */
372
373 resp = res;
374 for (i = 0; i < sz; i++) {
375 if (outmode == OUTMODE_FLN)
376 puts(res[i].file);
377 else if (outmode == OUTMODE_LST)
378 printf("%s - %s\n", res[i].names,
379 res[i].output == NULL ? "" :
380 res[i].output);
381 else if (outmode == OUTMODE_ONE) {
382 /* Search for the best section. */
383 isec = strcspn(res[i].file, "123456789");
384 sec = res[i].file[isec];
385 if ('\0' == sec)
386 continue;
387 prio = sec_prios[sec - '1'];
388 if (prio >= best_prio)
389 continue;
390 best_prio = prio;
391 resp = res + i;
392 }
393 }
394
395 /*
396 * For man(1), -a and -i output mode, fall through
397 * to the main mandoc(1) code iterating files
398 * and running the parsers on each of them.
399 */
400
401 if (outmode == OUTMODE_FLN || outmode == OUTMODE_LST)
402 goto out;
403 }
404
405 /* mandoc(1) */
406
407 if (search.argmode == ARG_FILE && ! moptions(&options, auxpaths))
408 return((int)MANDOCLEVEL_BADARG);
409
410 curp.mchars = mchars_alloc();
411 curp.mp = mparse_alloc(options, curp.wlevel, mmsg,
412 curp.mchars, defos);
413
414 /*
415 * Conditionally start up the lookaside buffer before parsing.
416 */
417 if (OUTT_MAN == curp.outtype)
418 mparse_keep(curp.mp);
419
420 if (argc < 1) {
421 if (pager_pid == 1 && isatty(STDOUT_FILENO))
422 pager_pid = spawn_pager();
423 parse(&curp, STDIN_FILENO, "<stdin>", &rc);
424 }
425
426 while (argc > 0) {
427 rctmp = mparse_open(curp.mp, &fd,
428 resp != NULL ? resp->file : *argv);
429 if (rc < rctmp)
430 rc = rctmp;
431
432 if (fd != -1) {
433 if (pager_pid == 1 && isatty(STDOUT_FILENO))
434 pager_pid = spawn_pager();
435
436 if (resp == NULL)
437 parse(&curp, fd, *argv, &rc);
438 else if (resp->form & FORM_SRC) {
439 /* For .so only; ignore failure. */
440 chdir(paths.paths[resp->ipath]);
441 parse(&curp, fd, resp->file, &rc);
442 } else {
443 rctmp = passthrough(resp->file, fd,
444 synopsis_only);
445 if (rc < rctmp)
446 rc = rctmp;
447 }
448
449 rctmp = mparse_wait(curp.mp);
450 if (rc < rctmp)
451 rc = rctmp;
452
453 if (argc > 1 && curp.outtype <= OUTT_UTF8)
454 ascii_sepline(curp.outdata);
455 }
456
457 if (MANDOCLEVEL_OK != rc && curp.wstop)
458 break;
459
460 if (resp != NULL)
461 resp++;
462 else
463 argv++;
464 if (--argc)
465 mparse_reset(curp.mp);
466 }
467
468 if (curp.outfree)
469 (*curp.outfree)(curp.outdata);
470 mparse_free(curp.mp);
471 mchars_free(curp.mchars);
472
473 out:
474 if (search.argmode != ARG_FILE) {
475 manpath_free(&paths);
476 #if HAVE_SQLITE3
477 mansearch_free(res, sz);
478 mansearch_setup(0);
479 #endif
480 }
481
482 free(defos);
483
484 /*
485 * If a pager is attached, flush the pipe leading to it
486 * and signal end of file such that the user can browse
487 * to the end. Then wait for the user to close the pager.
488 */
489
490 if (pager_pid != 0 && pager_pid != 1) {
491 fclose(stdout);
492 waitpid(pager_pid, NULL, 0);
493 }
494
495 return((int)rc);
496 }
497
498 static void
usage(enum argmode argmode)499 usage(enum argmode argmode)
500 {
501
502 switch (argmode) {
503 case ARG_FILE:
504 fputs("usage: mandoc [-acfhkl] [-Ios=name] "
505 "[-Kencoding] [-mformat] [-Ooption]\n"
506 "\t [-Toutput] [-Wlevel] [file ...]\n", stderr);
507 break;
508 case ARG_NAME:
509 fputs("usage: man [-acfhklw] [-C file] [-I os=name] "
510 "[-K encoding] [-M path] [-m path]\n"
511 "\t [-O option=value] [-S subsection] [-s section] "
512 "[-T output] [-W level]\n"
513 "\t [section] name ...\n", stderr);
514 break;
515 case ARG_WORD:
516 fputs("usage: whatis [-acfhklw] [-C file] "
517 "[-M path] [-m path] [-O outkey] [-S arch]\n"
518 "\t [-s section] name ...\n", stderr);
519 break;
520 case ARG_EXPR:
521 fputs("usage: apropos [-acfhklw] [-C file] "
522 "[-M path] [-m path] [-O outkey] [-S arch]\n"
523 "\t [-s section] expression ...\n", stderr);
524 break;
525 }
526 exit((int)MANDOCLEVEL_BADARG);
527 }
528
529 static int
fs_lookup(const struct manpaths * paths,size_t ipath,const char * sec,const char * arch,const char * name,struct manpage ** res,size_t * ressz)530 fs_lookup(const struct manpaths *paths, size_t ipath,
531 const char *sec, const char *arch, const char *name,
532 struct manpage **res, size_t *ressz)
533 {
534 glob_t globinfo;
535 struct manpage *page;
536 char *file;
537 int form, globres;
538
539 form = FORM_SRC;
540 mandoc_asprintf(&file, "%s/man%s/%s.%s",
541 paths->paths[ipath], sec, name, sec);
542 if (access(file, R_OK) != -1)
543 goto found;
544 free(file);
545
546 mandoc_asprintf(&file, "%s/cat%s/%s.0",
547 paths->paths[ipath], sec, name);
548 if (access(file, R_OK) != -1) {
549 form = FORM_CAT;
550 goto found;
551 }
552 free(file);
553
554 if (arch != NULL) {
555 mandoc_asprintf(&file, "%s/man%s/%s/%s.%s",
556 paths->paths[ipath], sec, arch, name, sec);
557 if (access(file, R_OK) != -1)
558 goto found;
559 free(file);
560 }
561
562 mandoc_asprintf(&file, "%s/man%s/%s.*",
563 paths->paths[ipath], sec, name);
564 globres = glob(file, 0, NULL, &globinfo);
565 if (globres != 0 && globres != GLOB_NOMATCH)
566 fprintf(stderr, "%s: %s: glob: %s\n",
567 progname, file, strerror(errno));
568 free(file);
569 if (globres == 0)
570 file = mandoc_strdup(*globinfo.gl_pathv);
571 globfree(&globinfo);
572 if (globres != 0)
573 return(0);
574
575 found:
576 #if HAVE_SQLITE3
577 fprintf(stderr, "%s: outdated mandoc.db lacks %s(%s) entry,\n"
578 " consider running # makewhatis %s\n",
579 progname, name, sec, paths->paths[ipath]);
580 #endif
581
582 *res = mandoc_reallocarray(*res, ++*ressz, sizeof(struct manpage));
583 page = *res + (*ressz - 1);
584 page->file = file;
585 page->names = NULL;
586 page->output = NULL;
587 page->ipath = ipath;
588 page->bits = NAME_FILE & NAME_MASK;
589 page->sec = (*sec >= '1' && *sec <= '9') ? *sec - '1' + 1 : 10;
590 page->form = form;
591 return(1);
592 }
593
594 static void
fs_search(const struct mansearch * cfg,const struct manpaths * paths,int argc,char ** argv,struct manpage ** res,size_t * ressz)595 fs_search(const struct mansearch *cfg, const struct manpaths *paths,
596 int argc, char **argv, struct manpage **res, size_t *ressz)
597 {
598 const char *const sections[] =
599 {"1", "8", "6", "2", "3", "3p", "5", "7", "4", "9"};
600 const size_t nsec = sizeof(sections)/sizeof(sections[0]);
601
602 size_t ipath, isec, lastsz;
603
604 assert(cfg->argmode == ARG_NAME);
605
606 *res = NULL;
607 *ressz = lastsz = 0;
608 while (argc) {
609 for (ipath = 0; ipath < paths->sz; ipath++) {
610 if (cfg->sec != NULL) {
611 if (fs_lookup(paths, ipath, cfg->sec,
612 cfg->arch, *argv, res, ressz) &&
613 cfg->firstmatch)
614 return;
615 } else for (isec = 0; isec < nsec; isec++)
616 if (fs_lookup(paths, ipath, sections[isec],
617 cfg->arch, *argv, res, ressz) &&
618 cfg->firstmatch)
619 return;
620 }
621 if (*ressz == lastsz)
622 fprintf(stderr,
623 "%s: No entry for %s in the manual.\n",
624 progname, *argv);
625 lastsz = *ressz;
626 argv++;
627 argc--;
628 }
629 }
630
631 static void
parse(struct curparse * curp,int fd,const char * file,enum mandoclevel * level)632 parse(struct curparse *curp, int fd, const char *file,
633 enum mandoclevel *level)
634 {
635 enum mandoclevel rc;
636 struct mdoc *mdoc;
637 struct man *man;
638
639 /* Begin by parsing the file itself. */
640
641 assert(file);
642 assert(fd >= -1);
643
644 rc = mparse_readfd(curp->mp, fd, file);
645
646 /*
647 * With -Wstop and warnings or errors of at least the requested
648 * level, do not produce output.
649 */
650
651 if (MANDOCLEVEL_OK != rc && curp->wstop)
652 goto cleanup;
653
654 /* If unset, allocate output dev now (if applicable). */
655
656 if ( ! (curp->outman && curp->outmdoc)) {
657 switch (curp->outtype) {
658 case OUTT_HTML:
659 curp->outdata = html_alloc(curp->mchars,
660 curp->outopts);
661 curp->outfree = html_free;
662 break;
663 case OUTT_UTF8:
664 curp->outdata = utf8_alloc(curp->mchars,
665 curp->outopts);
666 curp->outfree = ascii_free;
667 break;
668 case OUTT_LOCALE:
669 curp->outdata = locale_alloc(curp->mchars,
670 curp->outopts);
671 curp->outfree = ascii_free;
672 break;
673 case OUTT_ASCII:
674 curp->outdata = ascii_alloc(curp->mchars,
675 curp->outopts);
676 curp->outfree = ascii_free;
677 break;
678 case OUTT_PDF:
679 curp->outdata = pdf_alloc(curp->mchars,
680 curp->outopts);
681 curp->outfree = pspdf_free;
682 break;
683 case OUTT_PS:
684 curp->outdata = ps_alloc(curp->mchars,
685 curp->outopts);
686 curp->outfree = pspdf_free;
687 break;
688 default:
689 break;
690 }
691
692 switch (curp->outtype) {
693 case OUTT_HTML:
694 curp->outman = html_man;
695 curp->outmdoc = html_mdoc;
696 break;
697 case OUTT_TREE:
698 curp->outman = tree_man;
699 curp->outmdoc = tree_mdoc;
700 break;
701 case OUTT_MAN:
702 curp->outmdoc = man_mdoc;
703 curp->outman = man_man;
704 break;
705 case OUTT_PDF:
706 /* FALLTHROUGH */
707 case OUTT_ASCII:
708 /* FALLTHROUGH */
709 case OUTT_UTF8:
710 /* FALLTHROUGH */
711 case OUTT_LOCALE:
712 /* FALLTHROUGH */
713 case OUTT_PS:
714 curp->outman = terminal_man;
715 curp->outmdoc = terminal_mdoc;
716 break;
717 default:
718 break;
719 }
720 }
721
722 mparse_result(curp->mp, &mdoc, &man, NULL);
723
724 /* Execute the out device, if it exists. */
725
726 if (man && curp->outman)
727 (*curp->outman)(curp->outdata, man);
728 if (mdoc && curp->outmdoc)
729 (*curp->outmdoc)(curp->outdata, mdoc);
730
731 cleanup:
732 if (*level < rc)
733 *level = rc;
734 }
735
736 static enum mandoclevel
passthrough(const char * file,int fd,int synopsis_only)737 passthrough(const char *file, int fd, int synopsis_only)
738 {
739 const char synb[] = "S\bSY\bYN\bNO\bOP\bPS\bSI\bIS\bS";
740 const char synr[] = "SYNOPSIS";
741
742 FILE *stream;
743 const char *syscall;
744 char *line;
745 size_t len, off;
746 ssize_t nw;
747 int print;
748
749 fflush(stdout);
750
751 if ((stream = fdopen(fd, "r")) == NULL) {
752 close(fd);
753 syscall = "fdopen";
754 goto fail;
755 }
756
757 print = 0;
758 while ((line = fgetln(stream, &len)) != NULL) {
759 if (synopsis_only) {
760 if (print) {
761 if ( ! isspace((unsigned char)*line))
762 goto done;
763 while (len &&
764 isspace((unsigned char)*line)) {
765 line++;
766 len--;
767 }
768 } else {
769 if ((len == sizeof(synb) &&
770 ! strncmp(line, synb, len - 1)) ||
771 (len == sizeof(synr) &&
772 ! strncmp(line, synr, len - 1)))
773 print = 1;
774 continue;
775 }
776 }
777 for (off = 0; off < len; off += nw)
778 if ((nw = write(STDOUT_FILENO, line + off,
779 len - off)) == -1 || nw == 0) {
780 fclose(stream);
781 syscall = "write";
782 goto fail;
783 }
784 }
785
786 if (ferror(stream)) {
787 fclose(stream);
788 syscall = "fgetln";
789 goto fail;
790 }
791
792 done:
793 fclose(stream);
794 return(MANDOCLEVEL_OK);
795
796 fail:
797 fprintf(stderr, "%s: %s: SYSERR: %s: %s",
798 progname, file, syscall, strerror(errno));
799 return(MANDOCLEVEL_SYSERR);
800 }
801
802 static int
koptions(int * options,char * arg)803 koptions(int *options, char *arg)
804 {
805
806 if ( ! strcmp(arg, "utf-8")) {
807 *options |= MPARSE_UTF8;
808 *options &= ~MPARSE_LATIN1;
809 } else if ( ! strcmp(arg, "iso-8859-1")) {
810 *options |= MPARSE_LATIN1;
811 *options &= ~MPARSE_UTF8;
812 } else if ( ! strcmp(arg, "us-ascii")) {
813 *options &= ~(MPARSE_UTF8 | MPARSE_LATIN1);
814 } else {
815 fprintf(stderr, "%s: -K %s: Bad argument\n",
816 progname, arg);
817 return(0);
818 }
819 return(1);
820 }
821
822 static int
moptions(int * options,char * arg)823 moptions(int *options, char *arg)
824 {
825
826 if (arg == NULL)
827 /* nothing to do */;
828 else if (0 == strcmp(arg, "doc"))
829 *options |= MPARSE_MDOC;
830 else if (0 == strcmp(arg, "andoc"))
831 /* nothing to do */;
832 else if (0 == strcmp(arg, "an"))
833 *options |= MPARSE_MAN;
834 else {
835 fprintf(stderr, "%s: -m %s: Bad argument\n",
836 progname, arg);
837 return(0);
838 }
839
840 return(1);
841 }
842
843 static int
toptions(struct curparse * curp,char * arg)844 toptions(struct curparse *curp, char *arg)
845 {
846
847 if (0 == strcmp(arg, "ascii"))
848 curp->outtype = OUTT_ASCII;
849 else if (0 == strcmp(arg, "lint")) {
850 curp->outtype = OUTT_LINT;
851 curp->wlevel = MANDOCLEVEL_WARNING;
852 } else if (0 == strcmp(arg, "tree"))
853 curp->outtype = OUTT_TREE;
854 else if (0 == strcmp(arg, "man"))
855 curp->outtype = OUTT_MAN;
856 else if (0 == strcmp(arg, "html"))
857 curp->outtype = OUTT_HTML;
858 else if (0 == strcmp(arg, "utf8"))
859 curp->outtype = OUTT_UTF8;
860 else if (0 == strcmp(arg, "locale"))
861 curp->outtype = OUTT_LOCALE;
862 else if (0 == strcmp(arg, "xhtml"))
863 curp->outtype = OUTT_HTML;
864 else if (0 == strcmp(arg, "ps"))
865 curp->outtype = OUTT_PS;
866 else if (0 == strcmp(arg, "pdf"))
867 curp->outtype = OUTT_PDF;
868 else {
869 fprintf(stderr, "%s: -T %s: Bad argument\n",
870 progname, arg);
871 return(0);
872 }
873
874 return(1);
875 }
876
877 static int
woptions(struct curparse * curp,char * arg)878 woptions(struct curparse *curp, char *arg)
879 {
880 char *v, *o;
881 const char *toks[7];
882
883 toks[0] = "stop";
884 toks[1] = "all";
885 toks[2] = "warning";
886 toks[3] = "error";
887 toks[4] = "unsupp";
888 toks[5] = "fatal";
889 toks[6] = NULL;
890
891 while (*arg) {
892 o = arg;
893 switch (getsubopt(&arg, UNCONST(toks), &v)) {
894 case 0:
895 curp->wstop = 1;
896 break;
897 case 1:
898 /* FALLTHROUGH */
899 case 2:
900 curp->wlevel = MANDOCLEVEL_WARNING;
901 break;
902 case 3:
903 curp->wlevel = MANDOCLEVEL_ERROR;
904 break;
905 case 4:
906 curp->wlevel = MANDOCLEVEL_UNSUPP;
907 break;
908 case 5:
909 curp->wlevel = MANDOCLEVEL_BADARG;
910 break;
911 default:
912 fprintf(stderr, "%s: -W %s: Bad argument\n",
913 progname, o);
914 return(0);
915 }
916 }
917
918 return(1);
919 }
920
921 static void
mmsg(enum mandocerr t,enum mandoclevel lvl,const char * file,int line,int col,const char * msg)922 mmsg(enum mandocerr t, enum mandoclevel lvl,
923 const char *file, int line, int col, const char *msg)
924 {
925 const char *mparse_msg;
926
927 fprintf(stderr, "%s: %s:", progname, file);
928
929 if (line)
930 fprintf(stderr, "%d:%d:", line, col + 1);
931
932 fprintf(stderr, " %s", mparse_strlevel(lvl));
933
934 if (NULL != (mparse_msg = mparse_strerror(t)))
935 fprintf(stderr, ": %s", mparse_msg);
936
937 if (msg)
938 fprintf(stderr, ": %s", msg);
939
940 fputc('\n', stderr);
941 }
942
943 static pid_t
spawn_pager(void)944 spawn_pager(void)
945 {
946 #define MAX_PAGER_ARGS 16
947 char *argv[MAX_PAGER_ARGS];
948 const char *pager;
949 char *cp;
950 int fildes[2];
951 int argc;
952 pid_t pager_pid;
953
954 if (pipe(fildes) == -1) {
955 fprintf(stderr, "%s: pipe: %s\n",
956 progname, strerror(errno));
957 return(0);
958 }
959
960 switch (pager_pid = fork()) {
961 case -1:
962 fprintf(stderr, "%s: fork: %s\n",
963 progname, strerror(errno));
964 exit((int)MANDOCLEVEL_SYSERR);
965 case 0:
966 break;
967 default:
968 close(fildes[0]);
969 if (dup2(fildes[1], STDOUT_FILENO) == -1) {
970 fprintf(stderr, "%s: dup output: %s\n",
971 progname, strerror(errno));
972 exit((int)MANDOCLEVEL_SYSERR);
973 }
974 close(fildes[1]);
975 return(pager_pid);
976 }
977
978 /* The child process becomes the pager. */
979
980 close(fildes[1]);
981 if (dup2(fildes[0], STDIN_FILENO) == -1) {
982 fprintf(stderr, "%s: dup input: %s\n",
983 progname, strerror(errno));
984 exit((int)MANDOCLEVEL_SYSERR);
985 }
986 close(fildes[0]);
987
988 pager = getenv("MANPAGER");
989 if (pager == NULL || *pager == '\0')
990 pager = getenv("PAGER");
991 if (pager == NULL || *pager == '\0')
992 pager = "/usr/bin/more -s";
993 cp = mandoc_strdup(pager);
994
995 /*
996 * Parse the pager command into words.
997 * Intentionally do not do anything fancy here.
998 */
999
1000 argc = 0;
1001 while (argc + 1 < MAX_PAGER_ARGS) {
1002 argv[argc++] = cp;
1003 cp = strchr(cp, ' ');
1004 if (cp == NULL)
1005 break;
1006 *cp++ = '\0';
1007 while (*cp == ' ')
1008 cp++;
1009 if (*cp == '\0')
1010 break;
1011 }
1012 argv[argc] = NULL;
1013
1014 /* Hand over to the pager. */
1015
1016 execvp(argv[0], argv);
1017 fprintf(stderr, "%s: exec: %s\n",
1018 progname, strerror(errno));
1019 exit((int)MANDOCLEVEL_SYSERR);
1020 }
1021