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[mandoc.git] / main.c
1 /* $Id: main.c,v 1.292 2017/06/03 12:17:25 schwarze Exp $ */
2 /*
3 * Copyright (c) 2008-2012 Kristaps Dzonsons <kristaps@bsd.lv>
4 * Copyright (c) 2010-2012, 2014-2017 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 AUTHORS DISCLAIM ALL WARRANTIES
12 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
13 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHORS 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 #if HAVE_ERR
28 #include <err.h>
29 #endif
30 #include <errno.h>
31 #include <fcntl.h>
32 #include <glob.h>
33 #if HAVE_SANDBOX_INIT
34 #include <sandbox.h>
35 #endif
36 #include <signal.h>
37 #include <stdio.h>
38 #include <stdint.h>
39 #include <stdlib.h>
40 #include <string.h>
41 #include <time.h>
42 #include <unistd.h>
43
44 #include "mandoc_aux.h"
45 #include "mandoc.h"
46 #include "roff.h"
47 #include "mdoc.h"
48 #include "man.h"
49 #include "tag.h"
50 #include "main.h"
51 #include "manconf.h"
52 #include "mansearch.h"
53
54 enum outmode {
55 OUTMODE_DEF = 0,
56 OUTMODE_FLN,
57 OUTMODE_LST,
58 OUTMODE_ALL,
59 OUTMODE_ONE
60 };
61
62 enum outt {
63 OUTT_ASCII = 0, /* -Tascii */
64 OUTT_LOCALE, /* -Tlocale */
65 OUTT_UTF8, /* -Tutf8 */
66 OUTT_TREE, /* -Ttree */
67 OUTT_MAN, /* -Tman */
68 OUTT_HTML, /* -Thtml */
69 OUTT_MARKDOWN, /* -Tmarkdown */
70 OUTT_LINT, /* -Tlint */
71 OUTT_PS, /* -Tps */
72 OUTT_PDF /* -Tpdf */
73 };
74
75 struct curparse {
76 struct mparse *mp;
77 enum mandoclevel wlevel; /* ignore messages below this */
78 int wstop; /* stop after a file with a warning */
79 enum outt outtype; /* which output to use */
80 void *outdata; /* data for output */
81 struct manoutput *outopts; /* output options */
82 };
83
84
85 int mandocdb(int, char *[]);
86
87 static int fs_lookup(const struct manpaths *,
88 size_t ipath, const char *,
89 const char *, const char *,
90 struct manpage **, size_t *);
91 static void fs_search(const struct mansearch *,
92 const struct manpaths *, int, char**,
93 struct manpage **, size_t *);
94 static int koptions(int *, char *);
95 static void moptions(int *, char *);
96 static void mmsg(enum mandocerr, enum mandoclevel,
97 const char *, int, int, const char *);
98 static void outdata_alloc(struct curparse *);
99 static void parse(struct curparse *, int, const char *);
100 static void passthrough(const char *, int, int);
101 static pid_t spawn_pager(struct tag_files *);
102 static int toptions(struct curparse *, char *);
103 static void usage(enum argmode) __attribute__((__noreturn__));
104 static int woptions(struct curparse *, char *);
105
106 static const int sec_prios[] = {1, 4, 5, 8, 6, 3, 7, 2, 9};
107 static char help_arg[] = "help";
108 static char *help_argv[] = {help_arg, NULL};
109 static enum mandoclevel rc;
110
111
112 int
113 main(int argc, char *argv[])
114 {
115 struct manconf conf;
116 struct mansearch search;
117 struct curparse curp;
118 struct tag_files *tag_files;
119 struct manpage *res, *resp;
120 const char *progname, *sec, *thisarg;
121 char *conf_file, *defpaths, *auxpaths;
122 char *defos, *oarg;
123 unsigned char *uc;
124 size_t i, sz;
125 int prio, best_prio;
126 enum outmode outmode;
127 int fd;
128 int show_usage;
129 int options;
130 int use_pager;
131 int status, signum;
132 int c;
133 pid_t pager_pid, tc_pgid, man_pgid, pid;
134
135 #if HAVE_PROGNAME
136 progname = getprogname();
137 #else
138 if (argc < 1)
139 progname = mandoc_strdup("mandoc");
140 else if ((progname = strrchr(argv[0], '/')) == NULL)
141 progname = argv[0];
142 else
143 ++progname;
144 setprogname(progname);
145 #endif
146
147 if (strncmp(progname, "mandocdb", 8) == 0 ||
148 strcmp(progname, BINM_MAKEWHATIS) == 0)
149 return mandocdb(argc, argv);
150
151 #if HAVE_PLEDGE
152 if (pledge("stdio rpath tmppath tty proc exec", NULL) == -1)
153 err((int)MANDOCLEVEL_SYSERR, "pledge");
154 #endif
155
156 #if HAVE_SANDBOX_INIT
157 if (sandbox_init(kSBXProfileNoInternet, SANDBOX_NAMED, NULL) == -1)
158 errx((int)MANDOCLEVEL_SYSERR, "sandbox_init");
159 #endif
160
161 /* Search options. */
162
163 memset(&conf, 0, sizeof(conf));
164 conf_file = defpaths = NULL;
165 auxpaths = NULL;
166
167 memset(&search, 0, sizeof(struct mansearch));
168 search.outkey = "Nd";
169 oarg = NULL;
170
171 if (strcmp(progname, BINM_MAN) == 0)
172 search.argmode = ARG_NAME;
173 else if (strcmp(progname, BINM_APROPOS) == 0)
174 search.argmode = ARG_EXPR;
175 else if (strcmp(progname, BINM_WHATIS) == 0)
176 search.argmode = ARG_WORD;
177 else if (strncmp(progname, "help", 4) == 0)
178 search.argmode = ARG_NAME;
179 else
180 search.argmode = ARG_FILE;
181
182 /* Parser and formatter options. */
183
184 memset(&curp, 0, sizeof(struct curparse));
185 curp.outtype = OUTT_LOCALE;
186 curp.wlevel = MANDOCLEVEL_BADARG;
187 curp.outopts = &conf.output;
188 options = MPARSE_SO | MPARSE_UTF8 | MPARSE_LATIN1;
189 defos = NULL;
190
191 use_pager = 1;
192 tag_files = NULL;
193 show_usage = 0;
194 outmode = OUTMODE_DEF;
195
196 while ((c = getopt(argc, argv,
197 "aC:cfhI:iK:klM:m:O:S:s:T:VW:w")) != -1) {
198 if (c == 'i' && search.argmode == ARG_EXPR) {
199 optind--;
200 break;
201 }
202 switch (c) {
203 case 'a':
204 outmode = OUTMODE_ALL;
205 break;
206 case 'C':
207 conf_file = optarg;
208 break;
209 case 'c':
210 use_pager = 0;
211 break;
212 case 'f':
213 search.argmode = ARG_WORD;
214 break;
215 case 'h':
216 conf.output.synopsisonly = 1;
217 use_pager = 0;
218 outmode = OUTMODE_ALL;
219 break;
220 case 'I':
221 if (strncmp(optarg, "os=", 3)) {
222 warnx("-I %s: Bad argument", optarg);
223 return (int)MANDOCLEVEL_BADARG;
224 }
225 if (defos) {
226 warnx("-I %s: Duplicate argument", optarg);
227 return (int)MANDOCLEVEL_BADARG;
228 }
229 defos = mandoc_strdup(optarg + 3);
230 break;
231 case 'K':
232 if ( ! koptions(&options, optarg))
233 return (int)MANDOCLEVEL_BADARG;
234 break;
235 case 'k':
236 search.argmode = ARG_EXPR;
237 break;
238 case 'l':
239 search.argmode = ARG_FILE;
240 outmode = OUTMODE_ALL;
241 break;
242 case 'M':
243 defpaths = optarg;
244 break;
245 case 'm':
246 auxpaths = optarg;
247 break;
248 case 'O':
249 oarg = optarg;
250 break;
251 case 'S':
252 search.arch = optarg;
253 break;
254 case 's':
255 search.sec = optarg;
256 break;
257 case 'T':
258 if ( ! toptions(&curp, optarg))
259 return (int)MANDOCLEVEL_BADARG;
260 break;
261 case 'W':
262 if ( ! woptions(&curp, optarg))
263 return (int)MANDOCLEVEL_BADARG;
264 break;
265 case 'w':
266 outmode = OUTMODE_FLN;
267 break;
268 default:
269 show_usage = 1;
270 break;
271 }
272 }
273
274 if (show_usage)
275 usage(search.argmode);
276
277 /* Postprocess options. */
278
279 if (outmode == OUTMODE_DEF) {
280 switch (search.argmode) {
281 case ARG_FILE:
282 outmode = OUTMODE_ALL;
283 use_pager = 0;
284 break;
285 case ARG_NAME:
286 outmode = OUTMODE_ONE;
287 break;
288 default:
289 outmode = OUTMODE_LST;
290 break;
291 }
292 }
293
294 if (oarg != NULL) {
295 if (outmode == OUTMODE_LST)
296 search.outkey = oarg;
297 else {
298 while (oarg != NULL) {
299 thisarg = oarg;
300 if (manconf_output(&conf.output,
301 strsep(&oarg, ","), 0) == 0)
302 continue;
303 warnx("-O %s: Bad argument", thisarg);
304 return (int)MANDOCLEVEL_BADARG;
305 }
306 }
307 }
308
309 if (outmode == OUTMODE_FLN ||
310 outmode == OUTMODE_LST ||
311 !isatty(STDOUT_FILENO))
312 use_pager = 0;
313
314 #if HAVE_PLEDGE
315 if (!use_pager)
316 if (pledge("stdio rpath", NULL) == -1)
317 err((int)MANDOCLEVEL_SYSERR, "pledge");
318 #endif
319
320 /* Parse arguments. */
321
322 if (argc > 0) {
323 argc -= optind;
324 argv += optind;
325 }
326 resp = NULL;
327
328 /*
329 * Quirks for help(1)
330 * and for a man(1) section argument without -s.
331 */
332
333 if (search.argmode == ARG_NAME) {
334 if (*progname == 'h') {
335 if (argc == 0) {
336 argv = help_argv;
337 argc = 1;
338 }
339 } else if (argc > 1 &&
340 ((uc = (unsigned char *)argv[0]) != NULL) &&
341 ((isdigit(uc[0]) && (uc[1] == '\0' ||
342 (isalpha(uc[1]) && uc[2] == '\0'))) ||
343 (uc[0] == 'n' && uc[1] == '\0'))) {
344 search.sec = (char *)uc;
345 argv++;
346 argc--;
347 }
348 if (search.arch == NULL)
349 search.arch = getenv("MACHINE");
350 #ifdef MACHINE
351 if (search.arch == NULL)
352 search.arch = MACHINE;
353 #endif
354 }
355
356 rc = MANDOCLEVEL_OK;
357
358 /* man(1), whatis(1), apropos(1) */
359
360 if (search.argmode != ARG_FILE) {
361 if (search.argmode == ARG_NAME &&
362 outmode == OUTMODE_ONE)
363 search.firstmatch = 1;
364
365 /* Access the mandoc database. */
366
367 manconf_parse(&conf, conf_file, defpaths, auxpaths);
368 if ( ! mansearch(&search, &conf.manpath,
369 argc, argv, &res, &sz))
370 usage(search.argmode);
371
372 if (sz == 0) {
373 if (search.argmode == ARG_NAME)
374 fs_search(&search, &conf.manpath,
375 argc, argv, &res, &sz);
376 else
377 warnx("nothing appropriate");
378 }
379
380 if (sz == 0) {
381 rc = MANDOCLEVEL_BADARG;
382 goto out;
383 }
384
385 /*
386 * For standard man(1) and -a output mode,
387 * prepare for copying filename pointers
388 * into the program parameter array.
389 */
390
391 if (outmode == OUTMODE_ONE) {
392 argc = 1;
393 best_prio = 20;
394 } else if (outmode == OUTMODE_ALL)
395 argc = (int)sz;
396
397 /* Iterate all matching manuals. */
398
399 resp = res;
400 for (i = 0; i < sz; i++) {
401 if (outmode == OUTMODE_FLN)
402 puts(res[i].file);
403 else if (outmode == OUTMODE_LST)
404 printf("%s - %s\n", res[i].names,
405 res[i].output == NULL ? "" :
406 res[i].output);
407 else if (outmode == OUTMODE_ONE) {
408 /* Search for the best section. */
409 sec = res[i].file;
410 sec += strcspn(sec, "123456789");
411 if (sec[0] == '\0')
412 continue;
413 prio = sec_prios[sec[0] - '1'];
414 if (sec[1] != '/')
415 prio += 10;
416 if (prio >= best_prio)
417 continue;
418 best_prio = prio;
419 resp = res + i;
420 }
421 }
422
423 /*
424 * For man(1), -a and -i output mode, fall through
425 * to the main mandoc(1) code iterating files
426 * and running the parsers on each of them.
427 */
428
429 if (outmode == OUTMODE_FLN || outmode == OUTMODE_LST)
430 goto out;
431 }
432
433 /* mandoc(1) */
434
435 #if HAVE_PLEDGE
436 if (use_pager) {
437 if (pledge("stdio rpath tmppath tty proc exec", NULL) == -1)
438 err((int)MANDOCLEVEL_SYSERR, "pledge");
439 } else {
440 if (pledge("stdio rpath", NULL) == -1)
441 err((int)MANDOCLEVEL_SYSERR, "pledge");
442 }
443 #endif
444
445 if (search.argmode == ARG_FILE)
446 moptions(&options, auxpaths);
447
448 mchars_alloc();
449 curp.mp = mparse_alloc(options, curp.wlevel, mmsg, defos);
450
451 /*
452 * Conditionally start up the lookaside buffer before parsing.
453 */
454 if (OUTT_MAN == curp.outtype)
455 mparse_keep(curp.mp);
456
457 if (argc < 1) {
458 if (use_pager)
459 tag_files = tag_init();
460 parse(&curp, STDIN_FILENO, "<stdin>");
461 }
462
463 while (argc > 0) {
464 fd = mparse_open(curp.mp, resp != NULL ? resp->file : *argv);
465 if (fd != -1) {
466 if (use_pager) {
467 tag_files = tag_init();
468 use_pager = 0;
469 }
470
471 if (resp == NULL)
472 parse(&curp, fd, *argv);
473 else if (resp->form == FORM_SRC) {
474 /* For .so only; ignore failure. */
475 chdir(conf.manpath.paths[resp->ipath]);
476 parse(&curp, fd, resp->file);
477 } else
478 passthrough(resp->file, fd,
479 conf.output.synopsisonly);
480
481 if (argc > 1 && curp.outtype <= OUTT_UTF8) {
482 if (curp.outdata == NULL)
483 outdata_alloc(&curp);
484 terminal_sepline(curp.outdata);
485 }
486 } else if (rc < MANDOCLEVEL_ERROR)
487 rc = MANDOCLEVEL_ERROR;
488
489 if (MANDOCLEVEL_OK != rc && curp.wstop)
490 break;
491
492 if (resp != NULL)
493 resp++;
494 else
495 argv++;
496 if (--argc)
497 mparse_reset(curp.mp);
498 }
499
500 if (curp.outdata != NULL) {
501 switch (curp.outtype) {
502 case OUTT_HTML:
503 html_free(curp.outdata);
504 break;
505 case OUTT_UTF8:
506 case OUTT_LOCALE:
507 case OUTT_ASCII:
508 ascii_free(curp.outdata);
509 break;
510 case OUTT_PDF:
511 case OUTT_PS:
512 pspdf_free(curp.outdata);
513 break;
514 default:
515 break;
516 }
517 }
518 mparse_free(curp.mp);
519 mchars_free();
520
521 out:
522 if (search.argmode != ARG_FILE) {
523 manconf_free(&conf);
524 mansearch_free(res, sz);
525 }
526
527 free(defos);
528
529 /*
530 * When using a pager, finish writing both temporary files,
531 * fork it, wait for the user to close it, and clean up.
532 */
533
534 if (tag_files != NULL) {
535 fclose(stdout);
536 tag_write();
537 man_pgid = getpgid(0);
538 tag_files->tcpgid = man_pgid == getpid() ?
539 getpgid(getppid()) : man_pgid;
540 pager_pid = 0;
541 signum = SIGSTOP;
542 for (;;) {
543
544 /* Stop here until moved to the foreground. */
545
546 tc_pgid = tcgetpgrp(tag_files->ofd);
547 if (tc_pgid != man_pgid) {
548 if (tc_pgid == pager_pid) {
549 (void)tcsetpgrp(tag_files->ofd,
550 man_pgid);
551 if (signum == SIGTTIN)
552 continue;
553 } else
554 tag_files->tcpgid = tc_pgid;
555 kill(0, signum);
556 continue;
557 }
558
559 /* Once in the foreground, activate the pager. */
560
561 if (pager_pid) {
562 (void)tcsetpgrp(tag_files->ofd, pager_pid);
563 kill(pager_pid, SIGCONT);
564 } else
565 pager_pid = spawn_pager(tag_files);
566
567 /* Wait for the pager to stop or exit. */
568
569 while ((pid = waitpid(pager_pid, &status,
570 WUNTRACED)) == -1 && errno == EINTR)
571 continue;
572
573 if (pid == -1) {
574 warn("wait");
575 rc = MANDOCLEVEL_SYSERR;
576 break;
577 }
578 if (!WIFSTOPPED(status))
579 break;
580
581 signum = WSTOPSIG(status);
582 }
583 tag_unlink();
584 }
585
586 return (int)rc;
587 }
588
589 static void
590 usage(enum argmode argmode)
591 {
592
593 switch (argmode) {
594 case ARG_FILE:
595 fputs("usage: mandoc [-ac] [-I os=name] "
596 "[-K encoding] [-mdoc | -man] [-O options]\n"
597 "\t [-T output] [-W level] [file ...]\n", stderr);
598 break;
599 case ARG_NAME:
600 fputs("usage: man [-acfhklw] [-C file] [-M path] "
601 "[-m path] [-S subsection]\n"
602 "\t [[-s] section] name ...\n", stderr);
603 break;
604 case ARG_WORD:
605 fputs("usage: whatis [-afk] [-C file] "
606 "[-M path] [-m path] [-O outkey] [-S arch]\n"
607 "\t [-s section] name ...\n", stderr);
608 break;
609 case ARG_EXPR:
610 fputs("usage: apropos [-afk] [-C file] "
611 "[-M path] [-m path] [-O outkey] [-S arch]\n"
612 "\t [-s section] expression ...\n", stderr);
613 break;
614 }
615 exit((int)MANDOCLEVEL_BADARG);
616 }
617
618 static int
619 fs_lookup(const struct manpaths *paths, size_t ipath,
620 const char *sec, const char *arch, const char *name,
621 struct manpage **res, size_t *ressz)
622 {
623 glob_t globinfo;
624 struct manpage *page;
625 char *file;
626 int globres;
627 enum form form;
628
629 form = FORM_SRC;
630 mandoc_asprintf(&file, "%s/man%s/%s.%s",
631 paths->paths[ipath], sec, name, sec);
632 if (access(file, R_OK) != -1)
633 goto found;
634 free(file);
635
636 mandoc_asprintf(&file, "%s/cat%s/%s.0",
637 paths->paths[ipath], sec, name);
638 if (access(file, R_OK) != -1) {
639 form = FORM_CAT;
640 goto found;
641 }
642 free(file);
643
644 if (arch != NULL) {
645 mandoc_asprintf(&file, "%s/man%s/%s/%s.%s",
646 paths->paths[ipath], sec, arch, name, sec);
647 if (access(file, R_OK) != -1)
648 goto found;
649 free(file);
650 }
651
652 mandoc_asprintf(&file, "%s/man%s/%s.[01-9]*",
653 paths->paths[ipath], sec, name);
654 globres = glob(file, 0, NULL, &globinfo);
655 if (globres != 0 && globres != GLOB_NOMATCH)
656 warn("%s: glob", file);
657 free(file);
658 if (globres == 0)
659 file = mandoc_strdup(*globinfo.gl_pathv);
660 globfree(&globinfo);
661 if (globres != 0)
662 return 0;
663
664 found:
665 warnx("outdated mandoc.db lacks %s(%s) entry, run %s %s",
666 name, sec, BINM_MAKEWHATIS, paths->paths[ipath]);
667 *res = mandoc_reallocarray(*res, ++*ressz, sizeof(struct manpage));
668 page = *res + (*ressz - 1);
669 page->file = file;
670 page->names = NULL;
671 page->output = NULL;
672 page->ipath = ipath;
673 page->bits = NAME_FILE & NAME_MASK;
674 page->sec = (*sec >= '1' && *sec <= '9') ? *sec - '1' + 1 : 10;
675 page->form = form;
676 return 1;
677 }
678
679 static void
680 fs_search(const struct mansearch *cfg, const struct manpaths *paths,
681 int argc, char **argv, struct manpage **res, size_t *ressz)
682 {
683 const char *const sections[] =
684 {"1", "8", "6", "2", "3", "5", "7", "4", "9", "3p"};
685 const size_t nsec = sizeof(sections)/sizeof(sections[0]);
686
687 size_t ipath, isec, lastsz;
688
689 assert(cfg->argmode == ARG_NAME);
690
691 *res = NULL;
692 *ressz = lastsz = 0;
693 while (argc) {
694 for (ipath = 0; ipath < paths->sz; ipath++) {
695 if (cfg->sec != NULL) {
696 if (fs_lookup(paths, ipath, cfg->sec,
697 cfg->arch, *argv, res, ressz) &&
698 cfg->firstmatch)
699 return;
700 } else for (isec = 0; isec < nsec; isec++)
701 if (fs_lookup(paths, ipath, sections[isec],
702 cfg->arch, *argv, res, ressz) &&
703 cfg->firstmatch)
704 return;
705 }
706 if (*ressz == lastsz)
707 warnx("No entry for %s in the manual.", *argv);
708 lastsz = *ressz;
709 argv++;
710 argc--;
711 }
712 }
713
714 static void
715 parse(struct curparse *curp, int fd, const char *file)
716 {
717 enum mandoclevel rctmp;
718 struct roff_man *man;
719
720 /* Begin by parsing the file itself. */
721
722 assert(file);
723 assert(fd >= 0);
724
725 rctmp = mparse_readfd(curp->mp, fd, file);
726 if (fd != STDIN_FILENO)
727 close(fd);
728 if (rc < rctmp)
729 rc = rctmp;
730
731 /*
732 * With -Wstop and warnings or errors of at least the requested
733 * level, do not produce output.
734 */
735
736 if (rctmp != MANDOCLEVEL_OK && curp->wstop)
737 return;
738
739 if (curp->outdata == NULL)
740 outdata_alloc(curp);
741
742 mparse_result(curp->mp, &man, NULL);
743
744 /* Execute the out device, if it exists. */
745
746 if (man == NULL)
747 return;
748 if (man->macroset == MACROSET_MDOC) {
749 if (curp->outtype != OUTT_TREE || !curp->outopts->noval)
750 mdoc_validate(man);
751 switch (curp->outtype) {
752 case OUTT_HTML:
753 html_mdoc(curp->outdata, man);
754 break;
755 case OUTT_TREE:
756 tree_mdoc(curp->outdata, man);
757 break;
758 case OUTT_MAN:
759 man_mdoc(curp->outdata, man);
760 break;
761 case OUTT_PDF:
762 case OUTT_ASCII:
763 case OUTT_UTF8:
764 case OUTT_LOCALE:
765 case OUTT_PS:
766 terminal_mdoc(curp->outdata, man);
767 break;
768 case OUTT_MARKDOWN:
769 markdown_mdoc(curp->outdata, man);
770 break;
771 default:
772 break;
773 }
774 }
775 if (man->macroset == MACROSET_MAN) {
776 if (curp->outtype != OUTT_TREE || !curp->outopts->noval)
777 man_validate(man);
778 switch (curp->outtype) {
779 case OUTT_HTML:
780 html_man(curp->outdata, man);
781 break;
782 case OUTT_TREE:
783 tree_man(curp->outdata, man);
784 break;
785 case OUTT_MAN:
786 man_man(curp->outdata, man);
787 break;
788 case OUTT_PDF:
789 case OUTT_ASCII:
790 case OUTT_UTF8:
791 case OUTT_LOCALE:
792 case OUTT_PS:
793 terminal_man(curp->outdata, man);
794 break;
795 default:
796 break;
797 }
798 }
799 mparse_updaterc(curp->mp, &rc);
800 }
801
802 static void
803 outdata_alloc(struct curparse *curp)
804 {
805 switch (curp->outtype) {
806 case OUTT_HTML:
807 curp->outdata = html_alloc(curp->outopts);
808 break;
809 case OUTT_UTF8:
810 curp->outdata = utf8_alloc(curp->outopts);
811 break;
812 case OUTT_LOCALE:
813 curp->outdata = locale_alloc(curp->outopts);
814 break;
815 case OUTT_ASCII:
816 curp->outdata = ascii_alloc(curp->outopts);
817 break;
818 case OUTT_PDF:
819 curp->outdata = pdf_alloc(curp->outopts);
820 break;
821 case OUTT_PS:
822 curp->outdata = ps_alloc(curp->outopts);
823 break;
824 default:
825 break;
826 }
827 }
828
829 static void
830 passthrough(const char *file, int fd, int synopsis_only)
831 {
832 const char synb[] = "S\bSY\bYN\bNO\bOP\bPS\bSI\bIS\bS";
833 const char synr[] = "SYNOPSIS";
834
835 FILE *stream;
836 const char *syscall;
837 char *line, *cp;
838 size_t linesz;
839 ssize_t len, written;
840 int print;
841
842 line = NULL;
843 linesz = 0;
844
845 if (fflush(stdout) == EOF) {
846 syscall = "fflush";
847 goto fail;
848 }
849
850 if ((stream = fdopen(fd, "r")) == NULL) {
851 close(fd);
852 syscall = "fdopen";
853 goto fail;
854 }
855
856 print = 0;
857 while ((len = getline(&line, &linesz, stream)) != -1) {
858 cp = line;
859 if (synopsis_only) {
860 if (print) {
861 if ( ! isspace((unsigned char)*cp))
862 goto done;
863 while (isspace((unsigned char)*cp)) {
864 cp++;
865 len--;
866 }
867 } else {
868 if (strcmp(cp, synb) == 0 ||
869 strcmp(cp, synr) == 0)
870 print = 1;
871 continue;
872 }
873 }
874 for (; len > 0; len -= written) {
875 if ((written = write(STDOUT_FILENO, cp, len)) != -1)
876 continue;
877 fclose(stream);
878 syscall = "write";
879 goto fail;
880 }
881 }
882
883 if (ferror(stream)) {
884 fclose(stream);
885 syscall = "getline";
886 goto fail;
887 }
888
889 done:
890 free(line);
891 fclose(stream);
892 return;
893
894 fail:
895 free(line);
896 warn("%s: SYSERR: %s", file, syscall);
897 if (rc < MANDOCLEVEL_SYSERR)
898 rc = MANDOCLEVEL_SYSERR;
899 }
900
901 static int
902 koptions(int *options, char *arg)
903 {
904
905 if ( ! strcmp(arg, "utf-8")) {
906 *options |= MPARSE_UTF8;
907 *options &= ~MPARSE_LATIN1;
908 } else if ( ! strcmp(arg, "iso-8859-1")) {
909 *options |= MPARSE_LATIN1;
910 *options &= ~MPARSE_UTF8;
911 } else if ( ! strcmp(arg, "us-ascii")) {
912 *options &= ~(MPARSE_UTF8 | MPARSE_LATIN1);
913 } else {
914 warnx("-K %s: Bad argument", arg);
915 return 0;
916 }
917 return 1;
918 }
919
920 static void
921 moptions(int *options, char *arg)
922 {
923
924 if (arg == NULL)
925 return;
926 if (strcmp(arg, "doc") == 0)
927 *options |= MPARSE_MDOC;
928 else if (strcmp(arg, "an") == 0)
929 *options |= MPARSE_MAN;
930 }
931
932 static int
933 toptions(struct curparse *curp, char *arg)
934 {
935
936 if (0 == strcmp(arg, "ascii"))
937 curp->outtype = OUTT_ASCII;
938 else if (0 == strcmp(arg, "lint")) {
939 curp->outtype = OUTT_LINT;
940 curp->wlevel = MANDOCLEVEL_STYLE;
941 } else if (0 == strcmp(arg, "tree"))
942 curp->outtype = OUTT_TREE;
943 else if (0 == strcmp(arg, "man"))
944 curp->outtype = OUTT_MAN;
945 else if (0 == strcmp(arg, "html"))
946 curp->outtype = OUTT_HTML;
947 else if (0 == strcmp(arg, "markdown"))
948 curp->outtype = OUTT_MARKDOWN;
949 else if (0 == strcmp(arg, "utf8"))
950 curp->outtype = OUTT_UTF8;
951 else if (0 == strcmp(arg, "locale"))
952 curp->outtype = OUTT_LOCALE;
953 else if (0 == strcmp(arg, "ps"))
954 curp->outtype = OUTT_PS;
955 else if (0 == strcmp(arg, "pdf"))
956 curp->outtype = OUTT_PDF;
957 else {
958 warnx("-T %s: Bad argument", arg);
959 return 0;
960 }
961
962 return 1;
963 }
964
965 static int
966 woptions(struct curparse *curp, char *arg)
967 {
968 char *v, *o;
969 const char *toks[8];
970
971 toks[0] = "stop";
972 toks[1] = "all";
973 toks[2] = "style";
974 toks[3] = "warning";
975 toks[4] = "error";
976 toks[5] = "unsupp";
977 toks[6] = "fatal";
978 toks[7] = NULL;
979
980 while (*arg) {
981 o = arg;
982 switch (getsubopt(&arg, (char * const *)toks, &v)) {
983 case 0:
984 curp->wstop = 1;
985 break;
986 case 1:
987 case 2:
988 curp->wlevel = MANDOCLEVEL_STYLE;
989 break;
990 case 3:
991 curp->wlevel = MANDOCLEVEL_WARNING;
992 break;
993 case 4:
994 curp->wlevel = MANDOCLEVEL_ERROR;
995 break;
996 case 5:
997 curp->wlevel = MANDOCLEVEL_UNSUPP;
998 break;
999 case 6:
1000 curp->wlevel = MANDOCLEVEL_BADARG;
1001 break;
1002 default:
1003 warnx("-W %s: Bad argument", o);
1004 return 0;
1005 }
1006 }
1007 return 1;
1008 }
1009
1010 static void
1011 mmsg(enum mandocerr t, enum mandoclevel lvl,
1012 const char *file, int line, int col, const char *msg)
1013 {
1014 const char *mparse_msg;
1015
1016 fprintf(stderr, "%s: %s:", getprogname(),
1017 file == NULL ? "<stdin>" : file);
1018
1019 if (line)
1020 fprintf(stderr, "%d:%d:", line, col + 1);
1021
1022 fprintf(stderr, " %s", mparse_strlevel(lvl));
1023
1024 if (NULL != (mparse_msg = mparse_strerror(t)))
1025 fprintf(stderr, ": %s", mparse_msg);
1026
1027 if (msg)
1028 fprintf(stderr, ": %s", msg);
1029
1030 fputc('\n', stderr);
1031 }
1032
1033 static pid_t
1034 spawn_pager(struct tag_files *tag_files)
1035 {
1036 const struct timespec timeout = { 0, 100000000 }; /* 0.1s */
1037 #define MAX_PAGER_ARGS 16
1038 char *argv[MAX_PAGER_ARGS];
1039 const char *pager;
1040 char *cp;
1041 size_t cmdlen;
1042 int argc;
1043 pid_t pager_pid;
1044
1045 pager = getenv("MANPAGER");
1046 if (pager == NULL || *pager == '\0')
1047 pager = getenv("PAGER");
1048 if (pager == NULL || *pager == '\0')
1049 pager = "more -s";
1050 cp = mandoc_strdup(pager);
1051
1052 /*
1053 * Parse the pager command into words.
1054 * Intentionally do not do anything fancy here.
1055 */
1056
1057 argc = 0;
1058 while (argc + 4 < MAX_PAGER_ARGS) {
1059 argv[argc++] = cp;
1060 cp = strchr(cp, ' ');
1061 if (cp == NULL)
1062 break;
1063 *cp++ = '\0';
1064 while (*cp == ' ')
1065 cp++;
1066 if (*cp == '\0')
1067 break;
1068 }
1069
1070 /* For less(1), use the tag file. */
1071
1072 if ((cmdlen = strlen(argv[0])) >= 4) {
1073 cp = argv[0] + cmdlen - 4;
1074 if (strcmp(cp, "less") == 0) {
1075 argv[argc++] = mandoc_strdup("-T");
1076 argv[argc++] = tag_files->tfn;
1077 }
1078 }
1079 argv[argc++] = tag_files->ofn;
1080 argv[argc] = NULL;
1081
1082 switch (pager_pid = fork()) {
1083 case -1:
1084 err((int)MANDOCLEVEL_SYSERR, "fork");
1085 case 0:
1086 break;
1087 default:
1088 (void)setpgid(pager_pid, 0);
1089 (void)tcsetpgrp(tag_files->ofd, pager_pid);
1090 #if HAVE_PLEDGE
1091 if (pledge("stdio rpath tmppath tty proc", NULL) == -1)
1092 err((int)MANDOCLEVEL_SYSERR, "pledge");
1093 #endif
1094 tag_files->pager_pid = pager_pid;
1095 return pager_pid;
1096 }
1097
1098 /* The child process becomes the pager. */
1099
1100 if (dup2(tag_files->ofd, STDOUT_FILENO) == -1)
1101 err((int)MANDOCLEVEL_SYSERR, "pager stdout");
1102 close(tag_files->ofd);
1103 close(tag_files->tfd);
1104
1105 /* Do not start the pager before controlling the terminal. */
1106
1107 while (tcgetpgrp(STDOUT_FILENO) != getpid())
1108 nanosleep(&timeout, NULL);
1109
1110 execvp(argv[0], argv);
1111 err((int)MANDOCLEVEL_SYSERR, "exec %s", argv[0]);
1112 }
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