Annotation of src/usr.bin/mandoc/main.c, Revision 1.214
1.214 ! schwarze 1: /* $OpenBSD: main.c,v 1.213 2018/11/22 12:01:42 schwarze Exp $ */
1.1 kristaps 2: /*
1.95 schwarze 3: * Copyright (c) 2008-2012 Kristaps Dzonsons <kristaps@bsd.lv>
1.207 schwarze 4: * Copyright (c) 2010-2012, 2014-2018 Ingo Schwarze <schwarze@openbsd.org>
1.86 schwarze 5: * Copyright (c) 2010 Joerg Sonnenberger <joerg@netbsd.org>
1.1 kristaps 6: *
7: * Permission to use, copy, modify, and distribute this software for any
1.2 schwarze 8: * purpose with or without fee is hereby granted, provided that the above
9: * copyright notice and this permission notice appear in all copies.
1.1 kristaps 10: *
1.134 schwarze 11: * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHORS DISCLAIM ALL WARRANTIES
1.2 schwarze 12: * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
1.134 schwarze 13: * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR
1.2 schwarze 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.
1.1 kristaps 18: */
19:
1.95 schwarze 20: #include <sys/types.h>
1.207 schwarze 21: #include <sys/ioctl.h>
1.122 schwarze 22: #include <sys/param.h> /* MACHINE */
1.207 schwarze 23: #include <sys/termios.h>
1.129 schwarze 24: #include <sys/wait.h>
1.95 schwarze 25:
1.1 kristaps 26: #include <assert.h>
1.95 schwarze 27: #include <ctype.h>
1.152 schwarze 28: #include <err.h>
1.165 schwarze 29: #include <errno.h>
1.95 schwarze 30: #include <fcntl.h>
1.127 schwarze 31: #include <glob.h>
1.131 schwarze 32: #include <signal.h>
1.1 kristaps 33: #include <stdio.h>
1.17 schwarze 34: #include <stdint.h>
1.1 kristaps 35: #include <stdlib.h>
36: #include <string.h>
1.172 schwarze 37: #include <time.h>
1.1 kristaps 38: #include <unistd.h>
39:
1.136 schwarze 40: #include "mandoc_aux.h"
1.30 schwarze 41: #include "mandoc.h"
1.197 schwarze 42: #include "mandoc_xr.h"
1.136 schwarze 43: #include "roff.h"
1.1 kristaps 44: #include "mdoc.h"
45: #include "man.h"
1.214 ! schwarze 46: #include "mandoc_parse.h"
1.144 schwarze 47: #include "tag.h"
1.136 schwarze 48: #include "main.h"
1.134 schwarze 49: #include "manconf.h"
1.95 schwarze 50: #include "mansearch.h"
51:
52: enum outmode {
53: OUTMODE_DEF = 0,
54: OUTMODE_FLN,
55: OUTMODE_LST,
56: OUTMODE_ALL,
57: OUTMODE_ONE
58: };
1.1 kristaps 59:
60: enum outt {
1.76 schwarze 61: OUTT_ASCII = 0, /* -Tascii */
1.77 schwarze 62: OUTT_LOCALE, /* -Tlocale */
63: OUTT_UTF8, /* -Tutf8 */
1.76 schwarze 64: OUTT_TREE, /* -Ttree */
1.78 schwarze 65: OUTT_MAN, /* -Tman */
1.76 schwarze 66: OUTT_HTML, /* -Thtml */
1.188 schwarze 67: OUTT_MARKDOWN, /* -Tmarkdown */
1.76 schwarze 68: OUTT_LINT, /* -Tlint */
69: OUTT_PS, /* -Tps */
70: OUTT_PDF /* -Tpdf */
1.1 kristaps 71: };
72:
73: struct curparse {
1.76 schwarze 74: struct mparse *mp;
1.196 schwarze 75: struct manoutput *outopts; /* output options */
76: void *outdata; /* data for output */
77: char *os_s; /* operating system for display */
1.75 schwarze 78: int wstop; /* stop after a file with a warning */
1.196 schwarze 79: enum mandocerr mmin; /* ignore messages below this */
80: enum mandoc_os os_e; /* check base system conventions */
1.90 schwarze 81: enum outt outtype; /* which output to use */
1.33 schwarze 82: };
1.174 schwarze 83:
84:
85: int mandocdb(int, char *[]);
1.33 schwarze 86:
1.197 schwarze 87: static void check_xr(const char *);
1.119 schwarze 88: static int fs_lookup(const struct manpaths *,
89: size_t ipath, const char *,
90: const char *, const char *,
91: struct manpage **, size_t *);
1.198 schwarze 92: static int fs_search(const struct mansearch *,
1.119 schwarze 93: const struct manpaths *, int, char**,
94: struct manpage **, size_t *);
1.103 schwarze 95: static int koptions(int *, char *);
1.189 schwarze 96: static void moptions(int *, char *);
1.76 schwarze 97: static void mmsg(enum mandocerr, enum mandoclevel,
98: const char *, int, int, const char *);
1.179 schwarze 99: static void outdata_alloc(struct curparse *);
1.132 schwarze 100: static void parse(struct curparse *, int, const char *);
101: static void passthrough(const char *, int, int);
1.149 schwarze 102: static pid_t spawn_pager(struct tag_files *);
1.27 schwarze 103: static int toptions(struct curparse *, char *);
1.184 schwarze 104: static void usage(enum argmode) __attribute__((__noreturn__));
1.45 schwarze 105: static int woptions(struct curparse *, char *);
1.1 kristaps 106:
1.95 schwarze 107: static const int sec_prios[] = {1, 4, 5, 8, 6, 3, 7, 2, 9};
1.110 schwarze 108: static char help_arg[] = "help";
109: static char *help_argv[] = {help_arg, NULL};
1.131 schwarze 110: static enum mandoclevel rc;
1.203 schwarze 111: static FILE *mmsg_stream;
1.1 kristaps 112:
1.90 schwarze 113:
1.1 kristaps 114: int
115: main(int argc, char *argv[])
116: {
1.134 schwarze 117: struct manconf conf;
1.186 schwarze 118: struct mansearch search;
1.1 kristaps 119: struct curparse curp;
1.207 schwarze 120: struct winsize ws;
1.149 schwarze 121: struct tag_files *tag_files;
1.186 schwarze 122: struct manpage *res, *resp;
123: const char *progname, *sec, *thisarg;
124: char *conf_file, *defpaths, *auxpaths;
1.196 schwarze 125: char *oarg;
1.113 schwarze 126: unsigned char *uc;
1.171 schwarze 127: size_t i, sz;
1.135 schwarze 128: int prio, best_prio;
1.95 schwarze 129: enum outmode outmode;
1.208 schwarze 130: int fd, startdir;
1.95 schwarze 131: int show_usage;
1.87 schwarze 132: int options;
1.149 schwarze 133: int use_pager;
1.166 schwarze 134: int status, signum;
1.95 schwarze 135: int c;
1.166 schwarze 136: pid_t pager_pid, tc_pgid, man_pgid, pid;
1.1 kristaps 137:
1.162 schwarze 138: progname = getprogname();
139: if (strncmp(progname, "mandocdb", 8) == 0 ||
140: strncmp(progname, "makewhatis", 10) == 0)
1.150 schwarze 141: return mandocdb(argc, argv);
1.19 schwarze 142:
1.187 schwarze 143: if (pledge("stdio rpath tmppath tty proc exec", NULL) == -1)
1.163 schwarze 144: err((int)MANDOCLEVEL_SYSERR, "pledge");
1.154 schwarze 145:
1.95 schwarze 146: /* Search options. */
147:
1.134 schwarze 148: memset(&conf, 0, sizeof(conf));
1.111 schwarze 149: conf_file = defpaths = NULL;
150: auxpaths = NULL;
1.95 schwarze 151:
152: memset(&search, 0, sizeof(struct mansearch));
153: search.outkey = "Nd";
1.186 schwarze 154: oarg = NULL;
1.95 schwarze 155:
1.162 schwarze 156: if (strcmp(progname, "man") == 0)
1.95 schwarze 157: search.argmode = ARG_NAME;
1.162 schwarze 158: else if (strncmp(progname, "apropos", 7) == 0)
1.95 schwarze 159: search.argmode = ARG_EXPR;
1.162 schwarze 160: else if (strncmp(progname, "whatis", 6) == 0)
1.95 schwarze 161: search.argmode = ARG_WORD;
1.162 schwarze 162: else if (strncmp(progname, "help", 4) == 0)
1.110 schwarze 163: search.argmode = ARG_NAME;
1.95 schwarze 164: else
165: search.argmode = ARG_FILE;
166:
167: /* Parser and formatter options. */
168:
1.19 schwarze 169: memset(&curp, 0, sizeof(struct curparse));
1.109 schwarze 170: curp.outtype = OUTT_LOCALE;
1.196 schwarze 171: curp.mmin = MANDOCERR_MAX;
1.135 schwarze 172: curp.outopts = &conf.output;
1.103 schwarze 173: options = MPARSE_SO | MPARSE_UTF8 | MPARSE_LATIN1;
1.203 schwarze 174: mmsg_stream = stderr;
1.1 kristaps 175:
1.149 schwarze 176: use_pager = 1;
177: tag_files = NULL;
1.95 schwarze 178: show_usage = 0;
179: outmode = OUTMODE_DEF;
180:
1.192 schwarze 181: while ((c = getopt(argc, argv,
182: "aC:cfhI:iK:klM:m:O:S:s:T:VW:w")) != -1) {
183: if (c == 'i' && search.argmode == ARG_EXPR) {
184: optind--;
185: break;
186: }
1.1 kristaps 187: switch (c) {
1.95 schwarze 188: case 'a':
189: outmode = OUTMODE_ALL;
190: break;
191: case 'C':
192: conf_file = optarg;
193: break;
194: case 'c':
1.149 schwarze 195: use_pager = 0;
1.95 schwarze 196: break;
197: case 'f':
198: search.argmode = ARG_WORD;
199: break;
1.98 schwarze 200: case 'h':
1.135 schwarze 201: conf.output.synopsisonly = 1;
1.149 schwarze 202: use_pager = 0;
1.98 schwarze 203: outmode = OUTMODE_ALL;
204: break;
1.90 schwarze 205: case 'I':
1.83 schwarze 206: if (strncmp(optarg, "os=", 3)) {
1.152 schwarze 207: warnx("-I %s: Bad argument", optarg);
1.150 schwarze 208: return (int)MANDOCLEVEL_BADARG;
1.83 schwarze 209: }
1.196 schwarze 210: if (curp.os_s != NULL) {
1.152 schwarze 211: warnx("-I %s: Duplicate argument", optarg);
1.150 schwarze 212: return (int)MANDOCLEVEL_BADARG;
1.83 schwarze 213: }
1.196 schwarze 214: curp.os_s = mandoc_strdup(optarg + 3);
1.95 schwarze 215: break;
1.103 schwarze 216: case 'K':
217: if ( ! koptions(&options, optarg))
1.150 schwarze 218: return (int)MANDOCLEVEL_BADARG;
1.103 schwarze 219: break;
1.95 schwarze 220: case 'k':
221: search.argmode = ARG_EXPR;
222: break;
1.96 schwarze 223: case 'l':
224: search.argmode = ARG_FILE;
225: outmode = OUTMODE_ALL;
226: break;
1.95 schwarze 227: case 'M':
228: defpaths = optarg;
229: break;
1.90 schwarze 230: case 'm':
1.95 schwarze 231: auxpaths = optarg;
1.1 kristaps 232: break;
1.90 schwarze 233: case 'O':
1.186 schwarze 234: oarg = optarg;
1.17 schwarze 235: break;
1.95 schwarze 236: case 'S':
237: search.arch = optarg;
238: break;
239: case 's':
240: search.sec = optarg;
241: break;
1.90 schwarze 242: case 'T':
1.22 schwarze 243: if ( ! toptions(&curp, optarg))
1.150 schwarze 244: return (int)MANDOCLEVEL_BADARG;
1.1 kristaps 245: break;
1.90 schwarze 246: case 'W':
1.45 schwarze 247: if ( ! woptions(&curp, optarg))
1.150 schwarze 248: return (int)MANDOCLEVEL_BADARG;
1.1 kristaps 249: break;
1.95 schwarze 250: case 'w':
251: outmode = OUTMODE_FLN;
252: break;
1.1 kristaps 253: default:
1.95 schwarze 254: show_usage = 1;
255: break;
256: }
257: }
258:
259: if (show_usage)
260: usage(search.argmode);
261:
262: /* Postprocess options. */
263:
264: if (outmode == OUTMODE_DEF) {
265: switch (search.argmode) {
266: case ARG_FILE:
267: outmode = OUTMODE_ALL;
1.149 schwarze 268: use_pager = 0;
1.95 schwarze 269: break;
270: case ARG_NAME:
271: outmode = OUTMODE_ONE;
272: break;
273: default:
274: outmode = OUTMODE_LST;
275: break;
1.186 schwarze 276: }
277: }
278:
279: if (oarg != NULL) {
280: if (outmode == OUTMODE_LST)
281: search.outkey = oarg;
282: else {
283: while (oarg != NULL) {
284: thisarg = oarg;
285: if (manconf_output(&conf.output,
286: strsep(&oarg, ","), 0) == 0)
287: continue;
288: warnx("-O %s: Bad argument", thisarg);
289: return (int)MANDOCLEVEL_BADARG;
290: }
1.95 schwarze 291: }
292: }
293:
1.151 schwarze 294: if (outmode == OUTMODE_FLN ||
295: outmode == OUTMODE_LST ||
296: !isatty(STDOUT_FILENO))
297: use_pager = 0;
1.207 schwarze 298:
299: if (use_pager &&
300: (conf.output.width == 0 || conf.output.indent == 0) &&
1.209 schwarze 301: ioctl(STDOUT_FILENO, TIOCGWINSZ, &ws) != -1 &&
302: ws.ws_col > 1) {
1.207 schwarze 303: if (conf.output.width == 0 && ws.ws_col < 79)
304: conf.output.width = ws.ws_col - 1;
305: if (conf.output.indent == 0 && ws.ws_col < 66)
306: conf.output.indent = 3;
307: }
1.151 schwarze 308:
1.167 schwarze 309: if (!use_pager)
1.187 schwarze 310: if (pledge("stdio rpath", NULL) == -1)
1.167 schwarze 311: err((int)MANDOCLEVEL_SYSERR, "pledge");
1.154 schwarze 312:
1.95 schwarze 313: /* Parse arguments. */
314:
1.124 schwarze 315: if (argc > 0) {
316: argc -= optind;
317: argv += optind;
318: }
1.95 schwarze 319: resp = NULL;
320:
1.110 schwarze 321: /*
322: * Quirks for help(1)
323: * and for a man(1) section argument without -s.
324: */
325:
326: if (search.argmode == ARG_NAME) {
1.162 schwarze 327: if (*progname == 'h') {
1.110 schwarze 328: if (argc == 0) {
329: argv = help_argv;
330: argc = 1;
331: }
1.117 schwarze 332: } else if (argc > 1 &&
1.128 schwarze 333: ((uc = (unsigned char *)argv[0]) != NULL) &&
1.113 schwarze 334: ((isdigit(uc[0]) && (uc[1] == '\0' ||
335: (isalpha(uc[1]) && uc[2] == '\0'))) ||
336: (uc[0] == 'n' && uc[1] == '\0'))) {
1.128 schwarze 337: search.sec = (char *)uc;
1.110 schwarze 338: argv++;
339: argc--;
340: }
1.122 schwarze 341: if (search.arch == NULL)
342: search.arch = getenv("MACHINE");
343: if (search.arch == NULL)
344: search.arch = MACHINE;
1.95 schwarze 345: }
346:
347: rc = MANDOCLEVEL_OK;
348:
349: /* man(1), whatis(1), apropos(1) */
350:
351: if (search.argmode != ARG_FILE) {
1.107 schwarze 352: if (search.argmode == ARG_NAME &&
353: outmode == OUTMODE_ONE)
354: search.firstmatch = 1;
1.95 schwarze 355:
356: /* Access the mandoc database. */
357:
1.134 schwarze 358: manconf_parse(&conf, conf_file, defpaths, auxpaths);
359: if ( ! mansearch(&search, &conf.manpath,
360: argc, argv, &res, &sz))
1.95 schwarze 361: usage(search.argmode);
1.119 schwarze 362:
1.208 schwarze 363: if (sz == 0 && search.argmode == ARG_NAME)
364: fs_search(&search, &conf.manpath,
365: argc, argv, &res, &sz);
366:
367: if (search.argmode == ARG_NAME) {
368: for (c = 0; c < argc; c++) {
369: if (strchr(argv[c], '/') == NULL)
370: continue;
371: if (access(argv[c], R_OK) == -1) {
372: warn("%s", argv[c]);
373: continue;
374: }
375: res = mandoc_reallocarray(res,
376: sz + 1, sizeof(*res));
377: res[sz].file = mandoc_strdup(argv[c]);
378: res[sz].names = NULL;
379: res[sz].output = NULL;
380: res[sz].ipath = SIZE_MAX;
381: res[sz].sec = 10;
382: res[sz].form = FORM_SRC;
383: sz++;
384: }
1.142 schwarze 385: }
1.95 schwarze 386:
387: if (sz == 0) {
1.208 schwarze 388: if (search.argmode != ARG_NAME)
389: warnx("nothing appropriate");
1.95 schwarze 390: rc = MANDOCLEVEL_BADARG;
391: goto out;
392: }
393:
394: /*
395: * For standard man(1) and -a output mode,
396: * prepare for copying filename pointers
397: * into the program parameter array.
398: */
399:
400: if (outmode == OUTMODE_ONE) {
401: argc = 1;
1.171 schwarze 402: best_prio = 20;
1.95 schwarze 403: } else if (outmode == OUTMODE_ALL)
404: argc = (int)sz;
405:
406: /* Iterate all matching manuals. */
407:
1.119 schwarze 408: resp = res;
1.95 schwarze 409: for (i = 0; i < sz; i++) {
410: if (outmode == OUTMODE_FLN)
411: puts(res[i].file);
412: else if (outmode == OUTMODE_LST)
413: printf("%s - %s\n", res[i].names,
414: res[i].output == NULL ? "" :
415: res[i].output);
416: else if (outmode == OUTMODE_ONE) {
417: /* Search for the best section. */
1.171 schwarze 418: sec = res[i].file;
419: sec += strcspn(sec, "123456789");
420: if (sec[0] == '\0')
1.95 schwarze 421: continue;
1.171 schwarze 422: prio = sec_prios[sec[0] - '1'];
423: if (sec[1] != '/')
424: prio += 10;
1.95 schwarze 425: if (prio >= best_prio)
426: continue;
427: best_prio = prio;
428: resp = res + i;
429: }
1.1 kristaps 430: }
431:
1.95 schwarze 432: /*
433: * For man(1), -a and -i output mode, fall through
434: * to the main mandoc(1) code iterating files
435: * and running the parsers on each of them.
436: */
437:
438: if (outmode == OUTMODE_FLN || outmode == OUTMODE_LST)
439: goto out;
440: }
441:
442: /* mandoc(1) */
1.157 schwarze 443:
1.167 schwarze 444: if (use_pager) {
445: if (pledge("stdio rpath tmppath tty proc exec", NULL) == -1)
446: err((int)MANDOCLEVEL_SYSERR, "pledge");
447: } else {
448: if (pledge("stdio rpath", NULL) == -1)
449: err((int)MANDOCLEVEL_SYSERR, "pledge");
450: }
1.95 schwarze 451:
1.189 schwarze 452: if (search.argmode == ARG_FILE)
453: moptions(&options, auxpaths);
1.146 schwarze 454:
1.155 schwarze 455: mchars_alloc();
1.196 schwarze 456: curp.mp = mparse_alloc(options, curp.mmin, mmsg,
457: curp.os_e, curp.os_s);
1.76 schwarze 458:
1.124 schwarze 459: if (argc < 1) {
1.149 schwarze 460: if (use_pager)
461: tag_files = tag_init();
1.132 schwarze 462: parse(&curp, STDIN_FILENO, "<stdin>");
1.118 schwarze 463: }
1.27 schwarze 464:
1.208 schwarze 465: /*
466: * Remember the original working directory, if possible.
467: * This will be needed if some names on the command line
468: * are page names and some are relative file names.
469: * Do not error out if the current directory is not
470: * readable: Maybe it won't be needed after all.
471: */
472: startdir = open(".", O_RDONLY | O_DIRECTORY);
473:
1.124 schwarze 474: while (argc > 0) {
1.208 schwarze 475:
476: /*
477: * Changing directories is not needed in ARG_FILE mode.
478: * Do it on a best-effort basis. Even in case of
479: * failure, some functionality may still work.
480: */
481: if (resp != NULL) {
482: if (resp->ipath != SIZE_MAX)
483: (void)chdir(conf.manpath.paths[resp->ipath]);
484: else if (startdir != -1)
485: (void)fchdir(startdir);
486: }
487:
1.169 schwarze 488: fd = mparse_open(curp.mp, resp != NULL ? resp->file : *argv);
1.118 schwarze 489: if (fd != -1) {
1.149 schwarze 490: if (use_pager) {
1.212 schwarze 491: use_pager = 0;
1.149 schwarze 492: tag_files = tag_init();
1.212 schwarze 493: if (conf.output.tag != NULL &&
494: tag_files->tagname == NULL)
495: tag_files->tagname =
496: *conf.output.tag != '\0' ?
497: conf.output.tag : *argv;
1.149 schwarze 498: }
1.118 schwarze 499:
500: if (resp == NULL)
1.132 schwarze 501: parse(&curp, fd, *argv);
1.208 schwarze 502: else if (resp->form == FORM_SRC)
1.132 schwarze 503: parse(&curp, fd, resp->file);
1.208 schwarze 504: else
1.135 schwarze 505: passthrough(resp->file, fd,
506: conf.output.synopsisonly);
1.205 schwarze 507:
508: if (ferror(stdout)) {
509: if (tag_files != NULL) {
510: warn("%s", tag_files->ofn);
511: tag_unlink();
512: tag_files = NULL;
513: } else
514: warn("stdout");
515: rc = MANDOCLEVEL_SYSERR;
516: break;
517: }
1.118 schwarze 518:
1.179 schwarze 519: if (argc > 1 && curp.outtype <= OUTT_UTF8) {
520: if (curp.outdata == NULL)
521: outdata_alloc(&curp);
1.173 schwarze 522: terminal_sepline(curp.outdata);
1.179 schwarze 523: }
1.169 schwarze 524: } else if (rc < MANDOCLEVEL_ERROR)
525: rc = MANDOCLEVEL_ERROR;
1.100 schwarze 526:
1.76 schwarze 527: if (MANDOCLEVEL_OK != rc && curp.wstop)
1.27 schwarze 528: break;
1.116 schwarze 529:
1.118 schwarze 530: if (resp != NULL)
531: resp++;
532: else
533: argv++;
534: if (--argc)
535: mparse_reset(curp.mp);
1.1 kristaps 536: }
1.208 schwarze 537: if (startdir != -1) {
538: (void)fchdir(startdir);
539: close(startdir);
540: }
1.1 kristaps 541:
1.160 schwarze 542: if (curp.outdata != NULL) {
543: switch (curp.outtype) {
544: case OUTT_HTML:
545: html_free(curp.outdata);
546: break;
547: case OUTT_UTF8:
548: case OUTT_LOCALE:
549: case OUTT_ASCII:
550: ascii_free(curp.outdata);
551: break;
552: case OUTT_PDF:
553: case OUTT_PS:
554: pspdf_free(curp.outdata);
555: break;
556: default:
557: break;
558: }
1.158 schwarze 559: }
1.197 schwarze 560: mandoc_xr_free();
1.102 schwarze 561: mparse_free(curp.mp);
1.155 schwarze 562: mchars_free();
1.95 schwarze 563:
564: out:
565: if (search.argmode != ARG_FILE) {
1.134 schwarze 566: manconf_free(&conf);
1.95 schwarze 567: mansearch_free(res, sz);
568: }
569:
1.196 schwarze 570: free(curp.os_s);
1.1 kristaps 571:
1.129 schwarze 572: /*
1.149 schwarze 573: * When using a pager, finish writing both temporary files,
574: * fork it, wait for the user to close it, and clean up.
1.129 schwarze 575: */
576:
1.149 schwarze 577: if (tag_files != NULL) {
1.130 schwarze 578: fclose(stdout);
1.144 schwarze 579: tag_write();
1.166 schwarze 580: man_pgid = getpgid(0);
581: tag_files->tcpgid = man_pgid == getpid() ?
582: getpgid(getppid()) : man_pgid;
583: pager_pid = 0;
584: signum = SIGSTOP;
1.165 schwarze 585: for (;;) {
1.166 schwarze 586:
587: /* Stop here until moved to the foreground. */
588:
1.182 schwarze 589: tc_pgid = tcgetpgrp(tag_files->ofd);
1.166 schwarze 590: if (tc_pgid != man_pgid) {
591: if (tc_pgid == pager_pid) {
1.182 schwarze 592: (void)tcsetpgrp(tag_files->ofd,
1.166 schwarze 593: man_pgid);
594: if (signum == SIGTTIN)
595: continue;
596: } else
597: tag_files->tcpgid = tc_pgid;
598: kill(0, signum);
599: continue;
600: }
601:
602: /* Once in the foreground, activate the pager. */
603:
604: if (pager_pid) {
1.182 schwarze 605: (void)tcsetpgrp(tag_files->ofd, pager_pid);
1.166 schwarze 606: kill(pager_pid, SIGCONT);
607: } else
608: pager_pid = spawn_pager(tag_files);
609:
610: /* Wait for the pager to stop or exit. */
611:
612: while ((pid = waitpid(pager_pid, &status,
613: WUNTRACED)) == -1 && errno == EINTR)
614: continue;
615:
616: if (pid == -1) {
1.165 schwarze 617: warn("wait");
618: rc = MANDOCLEVEL_SYSERR;
619: break;
620: }
621: if (!WIFSTOPPED(status))
622: break;
623:
1.166 schwarze 624: signum = WSTOPSIG(status);
1.165 schwarze 625: }
1.144 schwarze 626: tag_unlink();
1.130 schwarze 627: }
1.129 schwarze 628:
1.150 schwarze 629: return (int)rc;
1.1 kristaps 630: }
631:
1.20 schwarze 632: static void
1.95 schwarze 633: usage(enum argmode argmode)
1.1 kristaps 634: {
635:
1.95 schwarze 636: switch (argmode) {
637: case ARG_FILE:
1.190 schwarze 638: fputs("usage: mandoc [-ac] [-I os=name] "
639: "[-K encoding] [-mdoc | -man] [-O options]\n"
1.133 schwarze 640: "\t [-T output] [-W level] [file ...]\n", stderr);
1.95 schwarze 641: break;
642: case ARG_NAME:
1.190 schwarze 643: fputs("usage: man [-acfhklw] [-C file] [-M path] "
644: "[-m path] [-S subsection]\n"
645: "\t [[-s] section] name ...\n", stderr);
1.95 schwarze 646: break;
647: case ARG_WORD:
1.190 schwarze 648: fputs("usage: whatis [-afk] [-C file] "
1.96 schwarze 649: "[-M path] [-m path] [-O outkey] [-S arch]\n"
650: "\t [-s section] name ...\n", stderr);
1.95 schwarze 651: break;
652: case ARG_EXPR:
1.190 schwarze 653: fputs("usage: apropos [-afk] [-C file] "
1.96 schwarze 654: "[-M path] [-m path] [-O outkey] [-S arch]\n"
1.95 schwarze 655: "\t [-s section] expression ...\n", stderr);
656: break;
657: }
1.47 schwarze 658: exit((int)MANDOCLEVEL_BADARG);
1.119 schwarze 659: }
660:
661: static int
662: fs_lookup(const struct manpaths *paths, size_t ipath,
663: const char *sec, const char *arch, const char *name,
664: struct manpage **res, size_t *ressz)
665: {
1.127 schwarze 666: glob_t globinfo;
1.119 schwarze 667: struct manpage *page;
668: char *file;
1.177 schwarze 669: int globres;
670: enum form form;
1.119 schwarze 671:
1.127 schwarze 672: form = FORM_SRC;
1.119 schwarze 673: mandoc_asprintf(&file, "%s/man%s/%s.%s",
674: paths->paths[ipath], sec, name, sec);
1.127 schwarze 675: if (access(file, R_OK) != -1)
1.119 schwarze 676: goto found;
677: free(file);
678:
679: mandoc_asprintf(&file, "%s/cat%s/%s.0",
680: paths->paths[ipath], sec, name);
681: if (access(file, R_OK) != -1) {
682: form = FORM_CAT;
683: goto found;
684: }
685: free(file);
686:
687: if (arch != NULL) {
688: mandoc_asprintf(&file, "%s/man%s/%s/%s.%s",
689: paths->paths[ipath], sec, arch, name, sec);
1.127 schwarze 690: if (access(file, R_OK) != -1)
1.119 schwarze 691: goto found;
692: free(file);
693: }
1.127 schwarze 694:
1.145 schwarze 695: mandoc_asprintf(&file, "%s/man%s/%s.[01-9]*",
1.127 schwarze 696: paths->paths[ipath], sec, name);
697: globres = glob(file, 0, NULL, &globinfo);
698: if (globres != 0 && globres != GLOB_NOMATCH)
1.152 schwarze 699: warn("%s: glob", file);
1.127 schwarze 700: free(file);
701: if (globres == 0)
702: file = mandoc_strdup(*globinfo.gl_pathv);
703: globfree(&globinfo);
1.199 schwarze 704: if (globres == 0)
705: goto found;
706: if (res != NULL || ipath + 1 != paths->sz)
1.150 schwarze 707: return 0;
1.119 schwarze 708:
1.199 schwarze 709: mandoc_asprintf(&file, "%s.%s", name, sec);
710: globres = access(file, R_OK);
711: free(file);
712: return globres != -1;
713:
1.119 schwarze 714: found:
1.152 schwarze 715: warnx("outdated mandoc.db lacks %s(%s) entry, run makewhatis %s",
716: name, sec, paths->paths[ipath]);
1.199 schwarze 717: if (res == NULL) {
718: free(file);
1.198 schwarze 719: return 1;
1.199 schwarze 720: }
1.119 schwarze 721: *res = mandoc_reallocarray(*res, ++*ressz, sizeof(struct manpage));
722: page = *res + (*ressz - 1);
723: page->file = file;
724: page->names = NULL;
725: page->output = NULL;
726: page->ipath = ipath;
727: page->sec = (*sec >= '1' && *sec <= '9') ? *sec - '1' + 1 : 10;
728: page->form = form;
1.150 schwarze 729: return 1;
1.119 schwarze 730: }
731:
1.198 schwarze 732: static int
1.119 schwarze 733: fs_search(const struct mansearch *cfg, const struct manpaths *paths,
734: int argc, char **argv, struct manpage **res, size_t *ressz)
735: {
736: const char *const sections[] =
1.171 schwarze 737: {"1", "8", "6", "2", "3", "5", "7", "4", "9", "3p"};
1.119 schwarze 738: const size_t nsec = sizeof(sections)/sizeof(sections[0]);
739:
740: size_t ipath, isec, lastsz;
741:
742: assert(cfg->argmode == ARG_NAME);
743:
1.198 schwarze 744: if (res != NULL)
745: *res = NULL;
1.119 schwarze 746: *ressz = lastsz = 0;
747: while (argc) {
748: for (ipath = 0; ipath < paths->sz; ipath++) {
749: if (cfg->sec != NULL) {
750: if (fs_lookup(paths, ipath, cfg->sec,
751: cfg->arch, *argv, res, ressz) &&
752: cfg->firstmatch)
1.198 schwarze 753: return 1;
1.119 schwarze 754: } else for (isec = 0; isec < nsec; isec++)
755: if (fs_lookup(paths, ipath, sections[isec],
756: cfg->arch, *argv, res, ressz) &&
757: cfg->firstmatch)
1.198 schwarze 758: return 1;
1.119 schwarze 759: }
1.208 schwarze 760: if (res != NULL && *ressz == lastsz &&
1.210 schwarze 761: strchr(*argv, '/') == NULL) {
762: if (cfg->sec == NULL)
763: warnx("No entry for %s in the manual.",
764: *argv);
765: else
766: warnx("No entry for %s in section %s "
767: "of the manual.", *argv, cfg->sec);
768: }
1.119 schwarze 769: lastsz = *ressz;
770: argv++;
771: argc--;
772: }
1.198 schwarze 773: return 0;
1.1 kristaps 774: }
775:
1.27 schwarze 776: static void
1.132 schwarze 777: parse(struct curparse *curp, int fd, const char *file)
1.52 schwarze 778: {
1.132 schwarze 779: enum mandoclevel rctmp;
1.139 schwarze 780: struct roff_man *man;
1.52 schwarze 781:
1.76 schwarze 782: /* Begin by parsing the file itself. */
1.52 schwarze 783:
1.76 schwarze 784: assert(file);
1.170 florian 785: assert(fd >= 0);
1.52 schwarze 786:
1.132 schwarze 787: rctmp = mparse_readfd(curp->mp, fd, file);
1.168 schwarze 788: if (fd != STDIN_FILENO)
789: close(fd);
1.132 schwarze 790: if (rc < rctmp)
791: rc = rctmp;
1.1 kristaps 792:
1.51 schwarze 793: /*
1.76 schwarze 794: * With -Wstop and warnings or errors of at least the requested
795: * level, do not produce output.
1.51 schwarze 796: */
797:
1.132 schwarze 798: if (rctmp != MANDOCLEVEL_OK && curp->wstop)
799: return;
1.51 schwarze 800:
1.179 schwarze 801: if (curp->outdata == NULL)
802: outdata_alloc(curp);
1.51 schwarze 803:
1.158 schwarze 804: mparse_result(curp->mp, &man, NULL);
805:
806: /* Execute the out device, if it exists. */
807:
808: if (man == NULL)
809: return;
1.200 schwarze 810: mandoc_xr_reset();
1.158 schwarze 811: if (man->macroset == MACROSET_MDOC) {
1.185 schwarze 812: if (curp->outtype != OUTT_TREE || !curp->outopts->noval)
813: mdoc_validate(man);
1.51 schwarze 814: switch (curp->outtype) {
1.90 schwarze 815: case OUTT_HTML:
1.158 schwarze 816: html_mdoc(curp->outdata, man);
1.51 schwarze 817: break;
1.90 schwarze 818: case OUTT_TREE:
1.158 schwarze 819: tree_mdoc(curp->outdata, man);
1.51 schwarze 820: break;
1.90 schwarze 821: case OUTT_MAN:
1.158 schwarze 822: man_mdoc(curp->outdata, man);
1.78 schwarze 823: break;
1.90 schwarze 824: case OUTT_PDF:
825: case OUTT_ASCII:
826: case OUTT_UTF8:
827: case OUTT_LOCALE:
828: case OUTT_PS:
1.158 schwarze 829: terminal_mdoc(curp->outdata, man);
830: break;
1.188 schwarze 831: case OUTT_MARKDOWN:
832: markdown_mdoc(curp->outdata, man);
833: break;
1.158 schwarze 834: default:
835: break;
836: }
837: }
838: if (man->macroset == MACROSET_MAN) {
1.185 schwarze 839: if (curp->outtype != OUTT_TREE || !curp->outopts->noval)
840: man_validate(man);
1.158 schwarze 841: switch (curp->outtype) {
842: case OUTT_HTML:
843: html_man(curp->outdata, man);
844: break;
845: case OUTT_TREE:
846: tree_man(curp->outdata, man);
847: break;
848: case OUTT_MAN:
1.211 schwarze 849: mparse_copy(curp->mp);
1.158 schwarze 850: break;
851: case OUTT_PDF:
852: case OUTT_ASCII:
853: case OUTT_UTF8:
854: case OUTT_LOCALE:
855: case OUTT_PS:
856: terminal_man(curp->outdata, man);
1.51 schwarze 857: break;
858: default:
859: break;
860: }
1.179 schwarze 861: }
1.200 schwarze 862: if (curp->mmin < MANDOCERR_STYLE)
863: check_xr(file);
1.181 schwarze 864: mparse_updaterc(curp->mp, &rc);
1.197 schwarze 865: }
866:
867: static void
868: check_xr(const char *file)
869: {
870: static struct manpaths paths;
871: struct mansearch search;
872: struct mandoc_xr *xr;
873: char *cp;
874: size_t sz;
875:
876: if (paths.sz == 0)
877: manpath_base(&paths);
878:
879: for (xr = mandoc_xr_get(); xr != NULL; xr = xr->next) {
1.200 schwarze 880: if (xr->line == -1)
881: continue;
1.197 schwarze 882: search.arch = NULL;
883: search.sec = xr->sec;
884: search.outkey = NULL;
885: search.argmode = ARG_NAME;
886: search.firstmatch = 1;
887: if (mansearch(&search, &paths, 1, &xr->name, NULL, &sz))
1.198 schwarze 888: continue;
889: if (fs_search(&search, &paths, 1, &xr->name, NULL, &sz))
1.197 schwarze 890: continue;
1.201 schwarze 891: if (xr->count == 1)
892: mandoc_asprintf(&cp, "Xr %s %s", xr->name, xr->sec);
893: else
894: mandoc_asprintf(&cp, "Xr %s %s (%d times)",
895: xr->name, xr->sec, xr->count);
1.197 schwarze 896: mmsg(MANDOCERR_XR_BAD, MANDOCLEVEL_STYLE,
897: file, xr->line, xr->pos + 1, cp);
898: free(cp);
899: }
1.179 schwarze 900: }
901:
902: static void
903: outdata_alloc(struct curparse *curp)
904: {
905: switch (curp->outtype) {
906: case OUTT_HTML:
907: curp->outdata = html_alloc(curp->outopts);
908: break;
909: case OUTT_UTF8:
910: curp->outdata = utf8_alloc(curp->outopts);
911: break;
912: case OUTT_LOCALE:
913: curp->outdata = locale_alloc(curp->outopts);
914: break;
915: case OUTT_ASCII:
916: curp->outdata = ascii_alloc(curp->outopts);
917: break;
918: case OUTT_PDF:
919: curp->outdata = pdf_alloc(curp->outopts);
920: break;
921: case OUTT_PS:
922: curp->outdata = ps_alloc(curp->outopts);
923: break;
924: default:
925: break;
1.51 schwarze 926: }
1.1 kristaps 927: }
928:
1.132 schwarze 929: static void
1.105 schwarze 930: passthrough(const char *file, int fd, int synopsis_only)
1.95 schwarze 931: {
1.105 schwarze 932: const char synb[] = "S\bSY\bYN\bNO\bOP\bPS\bSI\bIS\bS";
933: const char synr[] = "SYNOPSIS";
934:
935: FILE *stream;
1.95 schwarze 936: const char *syscall;
1.164 schwarze 937: char *line, *cp;
938: size_t linesz;
1.180 schwarze 939: ssize_t len, written;
1.105 schwarze 940: int print;
1.116 schwarze 941:
1.164 schwarze 942: line = NULL;
943: linesz = 0;
1.105 schwarze 944:
1.180 schwarze 945: if (fflush(stdout) == EOF) {
946: syscall = "fflush";
947: goto fail;
948: }
949:
1.105 schwarze 950: if ((stream = fdopen(fd, "r")) == NULL) {
951: close(fd);
952: syscall = "fdopen";
953: goto fail;
954: }
1.95 schwarze 955:
1.105 schwarze 956: print = 0;
1.180 schwarze 957: while ((len = getline(&line, &linesz, stream)) != -1) {
1.164 schwarze 958: cp = line;
1.105 schwarze 959: if (synopsis_only) {
960: if (print) {
1.164 schwarze 961: if ( ! isspace((unsigned char)*cp))
1.105 schwarze 962: goto done;
1.180 schwarze 963: while (isspace((unsigned char)*cp)) {
1.164 schwarze 964: cp++;
1.180 schwarze 965: len--;
966: }
1.105 schwarze 967: } else {
1.164 schwarze 968: if (strcmp(cp, synb) == 0 ||
969: strcmp(cp, synr) == 0)
1.105 schwarze 970: print = 1;
971: continue;
972: }
973: }
1.180 schwarze 974: for (; len > 0; len -= written) {
975: if ((written = write(STDOUT_FILENO, cp, len)) != -1)
976: continue;
1.164 schwarze 977: fclose(stream);
1.180 schwarze 978: syscall = "write";
1.164 schwarze 979: goto fail;
980: }
1.105 schwarze 981: }
1.95 schwarze 982:
1.105 schwarze 983: if (ferror(stream)) {
984: fclose(stream);
1.164 schwarze 985: syscall = "getline";
1.105 schwarze 986: goto fail;
987: }
1.101 schwarze 988:
1.105 schwarze 989: done:
1.164 schwarze 990: free(line);
1.105 schwarze 991: fclose(stream);
1.132 schwarze 992: return;
1.95 schwarze 993:
994: fail:
1.164 schwarze 995: free(line);
1.152 schwarze 996: warn("%s: SYSERR: %s", file, syscall);
1.132 schwarze 997: if (rc < MANDOCLEVEL_SYSERR)
998: rc = MANDOCLEVEL_SYSERR;
1.103 schwarze 999: }
1000:
1001: static int
1002: koptions(int *options, char *arg)
1003: {
1004:
1005: if ( ! strcmp(arg, "utf-8")) {
1006: *options |= MPARSE_UTF8;
1007: *options &= ~MPARSE_LATIN1;
1008: } else if ( ! strcmp(arg, "iso-8859-1")) {
1009: *options |= MPARSE_LATIN1;
1010: *options &= ~MPARSE_UTF8;
1011: } else if ( ! strcmp(arg, "us-ascii")) {
1012: *options &= ~(MPARSE_UTF8 | MPARSE_LATIN1);
1013: } else {
1.152 schwarze 1014: warnx("-K %s: Bad argument", arg);
1.150 schwarze 1015: return 0;
1.103 schwarze 1016: }
1.150 schwarze 1017: return 1;
1.95 schwarze 1018: }
1019:
1.189 schwarze 1020: static void
1.87 schwarze 1021: moptions(int *options, char *arg)
1.1 kristaps 1022: {
1023:
1.95 schwarze 1024: if (arg == NULL)
1.189 schwarze 1025: return;
1026: if (strcmp(arg, "doc") == 0)
1.87 schwarze 1027: *options |= MPARSE_MDOC;
1.189 schwarze 1028: else if (strcmp(arg, "an") == 0)
1.87 schwarze 1029: *options |= MPARSE_MAN;
1.1 kristaps 1030: }
1031:
1032: static int
1.22 schwarze 1033: toptions(struct curparse *curp, char *arg)
1.1 kristaps 1034: {
1035:
1036: if (0 == strcmp(arg, "ascii"))
1.22 schwarze 1037: curp->outtype = OUTT_ASCII;
1038: else if (0 == strcmp(arg, "lint")) {
1039: curp->outtype = OUTT_LINT;
1.196 schwarze 1040: curp->mmin = MANDOCERR_BASE;
1.203 schwarze 1041: mmsg_stream = stdout;
1.76 schwarze 1042: } else if (0 == strcmp(arg, "tree"))
1.22 schwarze 1043: curp->outtype = OUTT_TREE;
1.78 schwarze 1044: else if (0 == strcmp(arg, "man"))
1045: curp->outtype = OUTT_MAN;
1.17 schwarze 1046: else if (0 == strcmp(arg, "html"))
1.22 schwarze 1047: curp->outtype = OUTT_HTML;
1.188 schwarze 1048: else if (0 == strcmp(arg, "markdown"))
1049: curp->outtype = OUTT_MARKDOWN;
1.77 schwarze 1050: else if (0 == strcmp(arg, "utf8"))
1051: curp->outtype = OUTT_UTF8;
1052: else if (0 == strcmp(arg, "locale"))
1053: curp->outtype = OUTT_LOCALE;
1.36 schwarze 1054: else if (0 == strcmp(arg, "ps"))
1055: curp->outtype = OUTT_PS;
1.43 schwarze 1056: else if (0 == strcmp(arg, "pdf"))
1057: curp->outtype = OUTT_PDF;
1.1 kristaps 1058: else {
1.152 schwarze 1059: warnx("-T %s: Bad argument", arg);
1.150 schwarze 1060: return 0;
1.1 kristaps 1061: }
1062:
1.150 schwarze 1063: return 1;
1.1 kristaps 1064: }
1065:
1066: static int
1.45 schwarze 1067: woptions(struct curparse *curp, char *arg)
1.1 kristaps 1068: {
1.10 schwarze 1069: char *v, *o;
1.196 schwarze 1070: const char *toks[11];
1.1 kristaps 1071:
1.45 schwarze 1072: toks[0] = "stop";
1073: toks[1] = "all";
1.196 schwarze 1074: toks[2] = "base";
1075: toks[3] = "style";
1076: toks[4] = "warning";
1077: toks[5] = "error";
1078: toks[6] = "unsupp";
1079: toks[7] = "fatal";
1080: toks[8] = "openbsd";
1081: toks[9] = "netbsd";
1082: toks[10] = NULL;
1.1 kristaps 1083:
1.10 schwarze 1084: while (*arg) {
1085: o = arg;
1.176 schwarze 1086: switch (getsubopt(&arg, (char * const *)toks, &v)) {
1.90 schwarze 1087: case 0:
1.45 schwarze 1088: curp->wstop = 1;
1.1 kristaps 1089: break;
1.90 schwarze 1090: case 1:
1091: case 2:
1.196 schwarze 1092: curp->mmin = MANDOCERR_BASE;
1.193 schwarze 1093: break;
1094: case 3:
1.196 schwarze 1095: curp->mmin = MANDOCERR_STYLE;
1.1 kristaps 1096: break;
1.193 schwarze 1097: case 4:
1.196 schwarze 1098: curp->mmin = MANDOCERR_WARNING;
1.1 kristaps 1099: break;
1.193 schwarze 1100: case 5:
1.196 schwarze 1101: curp->mmin = MANDOCERR_ERROR;
1.123 schwarze 1102: break;
1.193 schwarze 1103: case 6:
1.196 schwarze 1104: curp->mmin = MANDOCERR_UNSUPP;
1105: break;
1106: case 7:
1107: curp->mmin = MANDOCERR_MAX;
1108: break;
1109: case 8:
1110: curp->mmin = MANDOCERR_BASE;
1111: curp->os_e = MANDOC_OS_OPENBSD;
1112: break;
1113: case 9:
1114: curp->mmin = MANDOCERR_BASE;
1115: curp->os_e = MANDOC_OS_NETBSD;
1.19 schwarze 1116: break;
1.1 kristaps 1117: default:
1.152 schwarze 1118: warnx("-W %s: Bad argument", o);
1.150 schwarze 1119: return 0;
1.1 kristaps 1120: }
1.10 schwarze 1121: }
1.150 schwarze 1122: return 1;
1.1 kristaps 1123: }
1124:
1.75 schwarze 1125: static void
1.90 schwarze 1126: mmsg(enum mandocerr t, enum mandoclevel lvl,
1.76 schwarze 1127: const char *file, int line, int col, const char *msg)
1.30 schwarze 1128: {
1.94 schwarze 1129: const char *mparse_msg;
1.45 schwarze 1130:
1.203 schwarze 1131: fprintf(mmsg_stream, "%s: %s:", getprogname(),
1.178 schwarze 1132: file == NULL ? "<stdin>" : file);
1.92 schwarze 1133:
1134: if (line)
1.203 schwarze 1135: fprintf(mmsg_stream, "%d:%d:", line, col + 1);
1.92 schwarze 1136:
1.203 schwarze 1137: fprintf(mmsg_stream, " %s", mparse_strlevel(lvl));
1.94 schwarze 1138:
1.196 schwarze 1139: if ((mparse_msg = mparse_strerror(t)) != NULL)
1.203 schwarze 1140: fprintf(mmsg_stream, ": %s", mparse_msg);
1.30 schwarze 1141:
1142: if (msg)
1.203 schwarze 1143: fprintf(mmsg_stream, ": %s", msg);
1.76 schwarze 1144:
1.203 schwarze 1145: fputc('\n', mmsg_stream);
1.95 schwarze 1146: }
1147:
1.130 schwarze 1148: static pid_t
1.149 schwarze 1149: spawn_pager(struct tag_files *tag_files)
1.95 schwarze 1150: {
1.172 schwarze 1151: const struct timespec timeout = { 0, 100000000 }; /* 0.1s */
1.95 schwarze 1152: #define MAX_PAGER_ARGS 16
1153: char *argv[MAX_PAGER_ARGS];
1154: const char *pager;
1155: char *cp;
1.144 schwarze 1156: size_t cmdlen;
1.212 schwarze 1157: int argc, use_ofn;
1.130 schwarze 1158: pid_t pager_pid;
1.95 schwarze 1159:
1.144 schwarze 1160: pager = getenv("MANPAGER");
1161: if (pager == NULL || *pager == '\0')
1162: pager = getenv("PAGER");
1163: if (pager == NULL || *pager == '\0')
1164: pager = "more -s";
1165: cp = mandoc_strdup(pager);
1166:
1167: /*
1168: * Parse the pager command into words.
1169: * Intentionally do not do anything fancy here.
1170: */
1171:
1172: argc = 0;
1.212 schwarze 1173: while (argc + 5 < MAX_PAGER_ARGS) {
1.144 schwarze 1174: argv[argc++] = cp;
1175: cp = strchr(cp, ' ');
1176: if (cp == NULL)
1177: break;
1178: *cp++ = '\0';
1179: while (*cp == ' ')
1180: cp++;
1181: if (*cp == '\0')
1182: break;
1183: }
1184:
1.149 schwarze 1185: /* For more(1) and less(1), use the tag file. */
1.144 schwarze 1186:
1.212 schwarze 1187: use_ofn = 1;
1.149 schwarze 1188: if ((cmdlen = strlen(argv[0])) >= 4) {
1.144 schwarze 1189: cp = argv[0] + cmdlen - 4;
1.149 schwarze 1190: if (strcmp(cp, "less") == 0 || strcmp(cp, "more") == 0) {
1191: argv[argc++] = mandoc_strdup("-T");
1192: argv[argc++] = tag_files->tfn;
1.212 schwarze 1193: if (tag_files->tagname != NULL) {
1194: argv[argc++] = mandoc_strdup("-t");
1195: argv[argc++] = tag_files->tagname;
1196: use_ofn = 0;
1197: }
1.149 schwarze 1198: }
1.144 schwarze 1199: }
1.212 schwarze 1200: if (use_ofn)
1201: argv[argc++] = tag_files->ofn;
1.144 schwarze 1202: argv[argc] = NULL;
1203:
1.130 schwarze 1204: switch (pager_pid = fork()) {
1.95 schwarze 1205: case -1:
1.152 schwarze 1206: err((int)MANDOCLEVEL_SYSERR, "fork");
1.95 schwarze 1207: case 0:
1.129 schwarze 1208: break;
1209: default:
1.165 schwarze 1210: (void)setpgid(pager_pid, 0);
1.182 schwarze 1211: (void)tcsetpgrp(tag_files->ofd, pager_pid);
1.165 schwarze 1212: if (pledge("stdio rpath tmppath tty proc", NULL) == -1)
1.163 schwarze 1213: err((int)MANDOCLEVEL_SYSERR, "pledge");
1.166 schwarze 1214: tag_files->pager_pid = pager_pid;
1.150 schwarze 1215: return pager_pid;
1.95 schwarze 1216: }
1217:
1.129 schwarze 1218: /* The child process becomes the pager. */
1.95 schwarze 1219:
1.152 schwarze 1220: if (dup2(tag_files->ofd, STDOUT_FILENO) == -1)
1221: err((int)MANDOCLEVEL_SYSERR, "pager stdout");
1.149 schwarze 1222: close(tag_files->ofd);
1.206 tb 1223: assert(tag_files->tfd == -1);
1.172 schwarze 1224:
1225: /* Do not start the pager before controlling the terminal. */
1226:
1.182 schwarze 1227: while (tcgetpgrp(STDOUT_FILENO) != getpid())
1.172 schwarze 1228: nanosleep(&timeout, NULL);
1229:
1.95 schwarze 1230: execvp(argv[0], argv);
1.152 schwarze 1231: err((int)MANDOCLEVEL_SYSERR, "exec %s", argv[0]);
1.30 schwarze 1232: }
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