Annotation of src/usr.bin/mandoc/main.c, Revision 1.229
1.229 ! schwarze 1: /* $OpenBSD: main.c,v 1.228 2019/05/03 17:31:05 schwarze Exp $ */
1.1 kristaps 2: /*
1.95 schwarze 3: * Copyright (c) 2008-2012 Kristaps Dzonsons <kristaps@bsd.lv>
1.220 schwarze 4: * Copyright (c) 2010-2012, 2014-2019 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 */
1.228 schwarze 23: #include <sys/stat.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>
1.224 schwarze 37: #include <termios.h>
1.172 schwarze 38: #include <time.h>
1.1 kristaps 39: #include <unistd.h>
40:
1.136 schwarze 41: #include "mandoc_aux.h"
1.30 schwarze 42: #include "mandoc.h"
1.197 schwarze 43: #include "mandoc_xr.h"
1.136 schwarze 44: #include "roff.h"
1.1 kristaps 45: #include "mdoc.h"
46: #include "man.h"
1.214 schwarze 47: #include "mandoc_parse.h"
1.144 schwarze 48: #include "tag.h"
1.136 schwarze 49: #include "main.h"
1.134 schwarze 50: #include "manconf.h"
1.95 schwarze 51: #include "mansearch.h"
52:
53: enum outmode {
54: OUTMODE_DEF = 0,
55: OUTMODE_FLN,
56: OUTMODE_LST,
57: OUTMODE_ALL,
58: OUTMODE_ONE
59: };
1.1 kristaps 60:
61: enum outt {
1.76 schwarze 62: OUTT_ASCII = 0, /* -Tascii */
1.77 schwarze 63: OUTT_LOCALE, /* -Tlocale */
64: OUTT_UTF8, /* -Tutf8 */
1.76 schwarze 65: OUTT_TREE, /* -Ttree */
1.78 schwarze 66: OUTT_MAN, /* -Tman */
1.76 schwarze 67: OUTT_HTML, /* -Thtml */
1.188 schwarze 68: OUTT_MARKDOWN, /* -Tmarkdown */
1.76 schwarze 69: OUTT_LINT, /* -Tlint */
70: OUTT_PS, /* -Tps */
71: OUTT_PDF /* -Tpdf */
1.1 kristaps 72: };
73:
74: struct curparse {
1.76 schwarze 75: struct mparse *mp;
1.196 schwarze 76: struct manoutput *outopts; /* output options */
77: void *outdata; /* data for output */
78: char *os_s; /* operating system for display */
1.75 schwarze 79: int wstop; /* stop after a file with a warning */
1.196 schwarze 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:
1.215 schwarze 87: static void check_xr(void);
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 *);
1.179 schwarze 97: static void outdata_alloc(struct curparse *);
1.132 schwarze 98: static void parse(struct curparse *, int, const char *);
99: static void passthrough(const char *, int, int);
1.149 schwarze 100: static pid_t spawn_pager(struct tag_files *);
1.27 schwarze 101: static int toptions(struct curparse *, char *);
1.184 schwarze 102: static void usage(enum argmode) __attribute__((__noreturn__));
1.45 schwarze 103: static int woptions(struct curparse *, char *);
1.1 kristaps 104:
1.95 schwarze 105: static const int sec_prios[] = {1, 4, 5, 8, 6, 3, 7, 2, 9};
1.110 schwarze 106: static char help_arg[] = "help";
107: static char *help_argv[] = {help_arg, NULL};
1.1 kristaps 108:
1.90 schwarze 109:
1.1 kristaps 110: int
111: main(int argc, char *argv[])
112: {
1.134 schwarze 113: struct manconf conf;
1.186 schwarze 114: struct mansearch search;
1.1 kristaps 115: struct curparse curp;
1.207 schwarze 116: struct winsize ws;
1.149 schwarze 117: struct tag_files *tag_files;
1.186 schwarze 118: struct manpage *res, *resp;
119: const char *progname, *sec, *thisarg;
120: char *conf_file, *defpaths, *auxpaths;
1.219 schwarze 121: char *oarg, *tagarg;
1.113 schwarze 122: unsigned char *uc;
1.227 schwarze 123: size_t i, sz, ssz;
1.135 schwarze 124: int prio, best_prio;
1.95 schwarze 125: enum outmode outmode;
1.208 schwarze 126: int fd, startdir;
1.95 schwarze 127: int show_usage;
1.87 schwarze 128: int options;
1.149 schwarze 129: int use_pager;
1.166 schwarze 130: int status, signum;
1.95 schwarze 131: int c;
1.166 schwarze 132: pid_t pager_pid, tc_pgid, man_pgid, pid;
1.1 kristaps 133:
1.162 schwarze 134: progname = getprogname();
1.220 schwarze 135: mandoc_msg_setoutfile(stderr);
1.162 schwarze 136: if (strncmp(progname, "mandocdb", 8) == 0 ||
137: strncmp(progname, "makewhatis", 10) == 0)
1.150 schwarze 138: return mandocdb(argc, argv);
1.19 schwarze 139:
1.187 schwarze 140: if (pledge("stdio rpath tmppath tty proc exec", NULL) == -1)
1.163 schwarze 141: err((int)MANDOCLEVEL_SYSERR, "pledge");
1.154 schwarze 142:
1.95 schwarze 143: /* Search options. */
144:
1.134 schwarze 145: memset(&conf, 0, sizeof(conf));
1.111 schwarze 146: conf_file = defpaths = NULL;
147: auxpaths = NULL;
1.95 schwarze 148:
149: memset(&search, 0, sizeof(struct mansearch));
150: search.outkey = "Nd";
1.186 schwarze 151: oarg = NULL;
1.95 schwarze 152:
1.162 schwarze 153: if (strcmp(progname, "man") == 0)
1.95 schwarze 154: search.argmode = ARG_NAME;
1.162 schwarze 155: else if (strncmp(progname, "apropos", 7) == 0)
1.95 schwarze 156: search.argmode = ARG_EXPR;
1.162 schwarze 157: else if (strncmp(progname, "whatis", 6) == 0)
1.95 schwarze 158: search.argmode = ARG_WORD;
1.162 schwarze 159: else if (strncmp(progname, "help", 4) == 0)
1.110 schwarze 160: search.argmode = ARG_NAME;
1.95 schwarze 161: else
162: search.argmode = ARG_FILE;
163:
164: /* Parser and formatter options. */
165:
1.19 schwarze 166: memset(&curp, 0, sizeof(struct curparse));
1.109 schwarze 167: curp.outtype = OUTT_LOCALE;
1.135 schwarze 168: curp.outopts = &conf.output;
1.103 schwarze 169: options = MPARSE_SO | MPARSE_UTF8 | MPARSE_LATIN1;
1.1 kristaps 170:
1.149 schwarze 171: use_pager = 1;
172: tag_files = NULL;
1.95 schwarze 173: show_usage = 0;
174: outmode = OUTMODE_DEF;
175:
1.192 schwarze 176: while ((c = getopt(argc, argv,
177: "aC:cfhI:iK:klM:m:O:S:s:T:VW:w")) != -1) {
178: if (c == 'i' && search.argmode == ARG_EXPR) {
179: optind--;
180: break;
181: }
1.1 kristaps 182: switch (c) {
1.95 schwarze 183: case 'a':
184: outmode = OUTMODE_ALL;
185: break;
186: case 'C':
187: conf_file = optarg;
188: break;
189: case 'c':
1.149 schwarze 190: use_pager = 0;
1.95 schwarze 191: break;
192: case 'f':
193: search.argmode = ARG_WORD;
194: break;
1.98 schwarze 195: case 'h':
1.135 schwarze 196: conf.output.synopsisonly = 1;
1.149 schwarze 197: use_pager = 0;
1.98 schwarze 198: outmode = OUTMODE_ALL;
199: break;
1.90 schwarze 200: case 'I':
1.83 schwarze 201: if (strncmp(optarg, "os=", 3)) {
1.152 schwarze 202: warnx("-I %s: Bad argument", optarg);
1.150 schwarze 203: return (int)MANDOCLEVEL_BADARG;
1.83 schwarze 204: }
1.196 schwarze 205: if (curp.os_s != NULL) {
1.152 schwarze 206: warnx("-I %s: Duplicate argument", optarg);
1.150 schwarze 207: return (int)MANDOCLEVEL_BADARG;
1.83 schwarze 208: }
1.196 schwarze 209: curp.os_s = mandoc_strdup(optarg + 3);
1.95 schwarze 210: break;
1.103 schwarze 211: case 'K':
212: if ( ! koptions(&options, optarg))
1.150 schwarze 213: return (int)MANDOCLEVEL_BADARG;
1.103 schwarze 214: break;
1.95 schwarze 215: case 'k':
216: search.argmode = ARG_EXPR;
217: break;
1.96 schwarze 218: case 'l':
219: search.argmode = ARG_FILE;
220: outmode = OUTMODE_ALL;
221: break;
1.95 schwarze 222: case 'M':
223: defpaths = optarg;
224: break;
1.90 schwarze 225: case 'm':
1.95 schwarze 226: auxpaths = optarg;
1.1 kristaps 227: break;
1.90 schwarze 228: case 'O':
1.186 schwarze 229: oarg = optarg;
1.17 schwarze 230: break;
1.95 schwarze 231: case 'S':
232: search.arch = optarg;
233: break;
234: case 's':
235: search.sec = optarg;
236: break;
1.90 schwarze 237: case 'T':
1.22 schwarze 238: if ( ! toptions(&curp, optarg))
1.150 schwarze 239: return (int)MANDOCLEVEL_BADARG;
1.1 kristaps 240: break;
1.90 schwarze 241: case 'W':
1.45 schwarze 242: if ( ! woptions(&curp, optarg))
1.150 schwarze 243: return (int)MANDOCLEVEL_BADARG;
1.1 kristaps 244: break;
1.95 schwarze 245: case 'w':
246: outmode = OUTMODE_FLN;
247: break;
1.1 kristaps 248: default:
1.95 schwarze 249: show_usage = 1;
250: break;
251: }
252: }
253:
254: if (show_usage)
255: usage(search.argmode);
256:
257: /* Postprocess options. */
258:
259: if (outmode == OUTMODE_DEF) {
260: switch (search.argmode) {
261: case ARG_FILE:
262: outmode = OUTMODE_ALL;
1.149 schwarze 263: use_pager = 0;
1.95 schwarze 264: break;
265: case ARG_NAME:
266: outmode = OUTMODE_ONE;
267: break;
268: default:
269: outmode = OUTMODE_LST;
270: break;
1.186 schwarze 271: }
272: }
273:
274: if (oarg != NULL) {
275: if (outmode == OUTMODE_LST)
276: search.outkey = oarg;
277: else {
278: while (oarg != NULL) {
279: if (manconf_output(&conf.output,
1.229 ! schwarze 280: strsep(&oarg, ","), 0) == -1)
! 281: return (int)MANDOCLEVEL_BADARG;
1.186 schwarze 282: }
1.95 schwarze 283: }
284: }
285:
1.218 schwarze 286: if (curp.outtype != OUTT_TREE || !curp.outopts->noval)
287: options |= MPARSE_VALIDATE;
288:
1.151 schwarze 289: if (outmode == OUTMODE_FLN ||
290: outmode == OUTMODE_LST ||
291: !isatty(STDOUT_FILENO))
292: use_pager = 0;
1.207 schwarze 293:
294: if (use_pager &&
295: (conf.output.width == 0 || conf.output.indent == 0) &&
1.209 schwarze 296: ioctl(STDOUT_FILENO, TIOCGWINSZ, &ws) != -1 &&
297: ws.ws_col > 1) {
1.207 schwarze 298: if (conf.output.width == 0 && ws.ws_col < 79)
299: conf.output.width = ws.ws_col - 1;
300: if (conf.output.indent == 0 && ws.ws_col < 66)
301: conf.output.indent = 3;
302: }
1.151 schwarze 303:
1.167 schwarze 304: if (!use_pager)
1.187 schwarze 305: if (pledge("stdio rpath", NULL) == -1)
1.167 schwarze 306: err((int)MANDOCLEVEL_SYSERR, "pledge");
1.154 schwarze 307:
1.95 schwarze 308: /* Parse arguments. */
309:
1.124 schwarze 310: if (argc > 0) {
311: argc -= optind;
312: argv += optind;
313: }
1.95 schwarze 314: resp = NULL;
315:
1.110 schwarze 316: /*
317: * Quirks for help(1)
318: * and for a man(1) section argument without -s.
319: */
320:
321: if (search.argmode == ARG_NAME) {
1.162 schwarze 322: if (*progname == 'h') {
1.110 schwarze 323: if (argc == 0) {
324: argv = help_argv;
325: argc = 1;
326: }
1.117 schwarze 327: } else if (argc > 1 &&
1.128 schwarze 328: ((uc = (unsigned char *)argv[0]) != NULL) &&
1.113 schwarze 329: ((isdigit(uc[0]) && (uc[1] == '\0' ||
1.226 schwarze 330: isalpha(uc[1]))) ||
1.113 schwarze 331: (uc[0] == 'n' && uc[1] == '\0'))) {
1.128 schwarze 332: search.sec = (char *)uc;
1.110 schwarze 333: argv++;
334: argc--;
335: }
1.122 schwarze 336: if (search.arch == NULL)
337: search.arch = getenv("MACHINE");
338: if (search.arch == NULL)
339: search.arch = MACHINE;
1.95 schwarze 340: }
341:
1.219 schwarze 342: /*
343: * Use the first argument for -O tag in addition to
344: * using it as a search term for man(1) or apropos(1).
345: */
346:
347: if (conf.output.tag != NULL && *conf.output.tag == '\0') {
348: tagarg = argc > 0 && search.argmode == ARG_EXPR ?
349: strchr(*argv, '=') : NULL;
350: conf.output.tag = tagarg == NULL ? *argv : tagarg + 1;
351: }
352:
1.95 schwarze 353: /* man(1), whatis(1), apropos(1) */
354:
355: if (search.argmode != ARG_FILE) {
1.107 schwarze 356: if (search.argmode == ARG_NAME &&
357: outmode == OUTMODE_ONE)
358: search.firstmatch = 1;
1.95 schwarze 359:
360: /* Access the mandoc database. */
361:
1.134 schwarze 362: manconf_parse(&conf, conf_file, defpaths, auxpaths);
363: if ( ! mansearch(&search, &conf.manpath,
364: argc, argv, &res, &sz))
1.95 schwarze 365: usage(search.argmode);
1.119 schwarze 366:
1.208 schwarze 367: if (sz == 0 && search.argmode == ARG_NAME)
368: fs_search(&search, &conf.manpath,
369: argc, argv, &res, &sz);
370:
371: if (search.argmode == ARG_NAME) {
372: for (c = 0; c < argc; c++) {
373: if (strchr(argv[c], '/') == NULL)
374: continue;
375: if (access(argv[c], R_OK) == -1) {
376: warn("%s", argv[c]);
377: continue;
378: }
379: res = mandoc_reallocarray(res,
380: sz + 1, sizeof(*res));
381: res[sz].file = mandoc_strdup(argv[c]);
382: res[sz].names = NULL;
383: res[sz].output = NULL;
1.225 schwarze 384: res[sz].bits = 0;
1.208 schwarze 385: res[sz].ipath = SIZE_MAX;
386: res[sz].sec = 10;
387: res[sz].form = FORM_SRC;
388: sz++;
389: }
1.142 schwarze 390: }
1.95 schwarze 391:
392: if (sz == 0) {
1.208 schwarze 393: if (search.argmode != ARG_NAME)
394: warnx("nothing appropriate");
1.215 schwarze 395: mandoc_msg_setrc(MANDOCLEVEL_BADARG);
1.95 schwarze 396: goto out;
397: }
398:
399: /*
400: * For standard man(1) and -a output mode,
401: * prepare for copying filename pointers
402: * into the program parameter array.
403: */
404:
405: if (outmode == OUTMODE_ONE) {
406: argc = 1;
1.227 schwarze 407: best_prio = 40;
1.95 schwarze 408: } else if (outmode == OUTMODE_ALL)
409: argc = (int)sz;
410:
411: /* Iterate all matching manuals. */
412:
1.119 schwarze 413: resp = res;
1.95 schwarze 414: for (i = 0; i < sz; i++) {
415: if (outmode == OUTMODE_FLN)
416: puts(res[i].file);
417: else if (outmode == OUTMODE_LST)
418: printf("%s - %s\n", res[i].names,
419: res[i].output == NULL ? "" :
420: res[i].output);
421: else if (outmode == OUTMODE_ONE) {
422: /* Search for the best section. */
1.171 schwarze 423: sec = res[i].file;
424: sec += strcspn(sec, "123456789");
425: if (sec[0] == '\0')
1.227 schwarze 426: continue; /* No section at all. */
1.171 schwarze 427: prio = sec_prios[sec[0] - '1'];
1.227 schwarze 428: if (search.sec != NULL) {
429: ssz = strlen(search.sec);
430: if (strncmp(sec, search.sec, ssz) == 0)
431: sec += ssz;
432: } else
433: sec++; /* Prefer without suffix. */
434: if (*sec != '/')
435: prio += 10; /* Wrong dir name. */
436: if (search.sec != NULL &&
437: (strlen(sec) <= ssz + 3 ||
438: strcmp(sec + strlen(sec) - ssz,
439: search.sec) != 0))
440: prio += 20; /* Wrong file ext. */
1.95 schwarze 441: if (prio >= best_prio)
442: continue;
443: best_prio = prio;
444: resp = res + i;
445: }
1.1 kristaps 446: }
447:
1.95 schwarze 448: /*
449: * For man(1), -a and -i output mode, fall through
450: * to the main mandoc(1) code iterating files
451: * and running the parsers on each of them.
452: */
453:
454: if (outmode == OUTMODE_FLN || outmode == OUTMODE_LST)
455: goto out;
456: }
457:
458: /* mandoc(1) */
1.157 schwarze 459:
1.167 schwarze 460: if (use_pager) {
461: if (pledge("stdio rpath tmppath tty proc exec", NULL) == -1)
462: err((int)MANDOCLEVEL_SYSERR, "pledge");
463: } else {
464: if (pledge("stdio rpath", NULL) == -1)
465: err((int)MANDOCLEVEL_SYSERR, "pledge");
466: }
1.95 schwarze 467:
1.189 schwarze 468: if (search.argmode == ARG_FILE)
469: moptions(&options, auxpaths);
1.146 schwarze 470:
1.155 schwarze 471: mchars_alloc();
1.215 schwarze 472: curp.mp = mparse_alloc(options, curp.os_e, curp.os_s);
1.76 schwarze 473:
1.124 schwarze 474: if (argc < 1) {
1.219 schwarze 475: if (use_pager) {
1.149 schwarze 476: tag_files = tag_init();
1.219 schwarze 477: tag_files->tagname = conf.output.tag;
478: }
1.215 schwarze 479: thisarg = "<stdin>";
480: mandoc_msg_setinfilename(thisarg);
481: parse(&curp, STDIN_FILENO, thisarg);
482: mandoc_msg_setinfilename(NULL);
1.118 schwarze 483: }
1.27 schwarze 484:
1.208 schwarze 485: /*
486: * Remember the original working directory, if possible.
487: * This will be needed if some names on the command line
488: * are page names and some are relative file names.
489: * Do not error out if the current directory is not
490: * readable: Maybe it won't be needed after all.
491: */
492: startdir = open(".", O_RDONLY | O_DIRECTORY);
493:
1.124 schwarze 494: while (argc > 0) {
1.208 schwarze 495:
496: /*
497: * Changing directories is not needed in ARG_FILE mode.
498: * Do it on a best-effort basis. Even in case of
499: * failure, some functionality may still work.
500: */
501: if (resp != NULL) {
502: if (resp->ipath != SIZE_MAX)
503: (void)chdir(conf.manpath.paths[resp->ipath]);
504: else if (startdir != -1)
505: (void)fchdir(startdir);
1.215 schwarze 506: thisarg = resp->file;
507: } else
508: thisarg = *argv;
1.208 schwarze 509:
1.215 schwarze 510: fd = mparse_open(curp.mp, thisarg);
1.118 schwarze 511: if (fd != -1) {
1.149 schwarze 512: if (use_pager) {
1.212 schwarze 513: use_pager = 0;
1.149 schwarze 514: tag_files = tag_init();
1.219 schwarze 515: tag_files->tagname = conf.output.tag;
1.149 schwarze 516: }
1.118 schwarze 517:
1.217 schwarze 518: mandoc_msg_setinfilename(thisarg);
1.215 schwarze 519: if (resp == NULL || resp->form == FORM_SRC)
520: parse(&curp, fd, thisarg);
1.208 schwarze 521: else
1.135 schwarze 522: passthrough(resp->file, fd,
523: conf.output.synopsisonly);
1.217 schwarze 524: mandoc_msg_setinfilename(NULL);
1.205 schwarze 525:
526: if (ferror(stdout)) {
527: if (tag_files != NULL) {
528: warn("%s", tag_files->ofn);
529: tag_unlink();
530: tag_files = NULL;
531: } else
532: warn("stdout");
1.215 schwarze 533: mandoc_msg_setrc(MANDOCLEVEL_SYSERR);
1.205 schwarze 534: break;
535: }
1.118 schwarze 536:
1.179 schwarze 537: if (argc > 1 && curp.outtype <= OUTT_UTF8) {
538: if (curp.outdata == NULL)
539: outdata_alloc(&curp);
1.173 schwarze 540: terminal_sepline(curp.outdata);
1.179 schwarze 541: }
1.217 schwarze 542: } else
543: mandoc_msg(MANDOCERR_FILE, 0, 0,
1.221 schwarze 544: "%s: %s", thisarg, strerror(errno));
1.100 schwarze 545:
1.215 schwarze 546: if (curp.wstop && mandoc_msg_getrc() != MANDOCLEVEL_OK)
1.27 schwarze 547: break;
1.116 schwarze 548:
1.118 schwarze 549: if (resp != NULL)
550: resp++;
551: else
552: argv++;
553: if (--argc)
554: mparse_reset(curp.mp);
1.1 kristaps 555: }
1.208 schwarze 556: if (startdir != -1) {
557: (void)fchdir(startdir);
558: close(startdir);
559: }
1.1 kristaps 560:
1.160 schwarze 561: if (curp.outdata != NULL) {
562: switch (curp.outtype) {
563: case OUTT_HTML:
564: html_free(curp.outdata);
565: break;
566: case OUTT_UTF8:
567: case OUTT_LOCALE:
568: case OUTT_ASCII:
569: ascii_free(curp.outdata);
570: break;
571: case OUTT_PDF:
572: case OUTT_PS:
573: pspdf_free(curp.outdata);
574: break;
575: default:
576: break;
577: }
1.158 schwarze 578: }
1.197 schwarze 579: mandoc_xr_free();
1.102 schwarze 580: mparse_free(curp.mp);
1.155 schwarze 581: mchars_free();
1.95 schwarze 582:
583: out:
584: if (search.argmode != ARG_FILE) {
1.134 schwarze 585: manconf_free(&conf);
1.95 schwarze 586: mansearch_free(res, sz);
587: }
588:
1.196 schwarze 589: free(curp.os_s);
1.1 kristaps 590:
1.129 schwarze 591: /*
1.149 schwarze 592: * When using a pager, finish writing both temporary files,
593: * fork it, wait for the user to close it, and clean up.
1.129 schwarze 594: */
595:
1.149 schwarze 596: if (tag_files != NULL) {
1.130 schwarze 597: fclose(stdout);
1.144 schwarze 598: tag_write();
1.166 schwarze 599: man_pgid = getpgid(0);
600: tag_files->tcpgid = man_pgid == getpid() ?
601: getpgid(getppid()) : man_pgid;
602: pager_pid = 0;
603: signum = SIGSTOP;
1.165 schwarze 604: for (;;) {
1.166 schwarze 605:
606: /* Stop here until moved to the foreground. */
607:
1.182 schwarze 608: tc_pgid = tcgetpgrp(tag_files->ofd);
1.166 schwarze 609: if (tc_pgid != man_pgid) {
610: if (tc_pgid == pager_pid) {
1.182 schwarze 611: (void)tcsetpgrp(tag_files->ofd,
1.166 schwarze 612: man_pgid);
613: if (signum == SIGTTIN)
614: continue;
615: } else
616: tag_files->tcpgid = tc_pgid;
617: kill(0, signum);
618: continue;
619: }
620:
621: /* Once in the foreground, activate the pager. */
622:
623: if (pager_pid) {
1.182 schwarze 624: (void)tcsetpgrp(tag_files->ofd, pager_pid);
1.166 schwarze 625: kill(pager_pid, SIGCONT);
626: } else
627: pager_pid = spawn_pager(tag_files);
628:
629: /* Wait for the pager to stop or exit. */
630:
631: while ((pid = waitpid(pager_pid, &status,
632: WUNTRACED)) == -1 && errno == EINTR)
633: continue;
634:
635: if (pid == -1) {
1.165 schwarze 636: warn("wait");
1.215 schwarze 637: mandoc_msg_setrc(MANDOCLEVEL_SYSERR);
1.165 schwarze 638: break;
639: }
640: if (!WIFSTOPPED(status))
641: break;
642:
1.166 schwarze 643: signum = WSTOPSIG(status);
1.165 schwarze 644: }
1.144 schwarze 645: tag_unlink();
1.130 schwarze 646: }
1.215 schwarze 647: return (int)mandoc_msg_getrc();
1.1 kristaps 648: }
649:
1.20 schwarze 650: static void
1.95 schwarze 651: usage(enum argmode argmode)
1.1 kristaps 652: {
653:
1.95 schwarze 654: switch (argmode) {
655: case ARG_FILE:
1.190 schwarze 656: fputs("usage: mandoc [-ac] [-I os=name] "
657: "[-K encoding] [-mdoc | -man] [-O options]\n"
1.133 schwarze 658: "\t [-T output] [-W level] [file ...]\n", stderr);
1.95 schwarze 659: break;
660: case ARG_NAME:
1.190 schwarze 661: fputs("usage: man [-acfhklw] [-C file] [-M path] "
662: "[-m path] [-S subsection]\n"
663: "\t [[-s] section] name ...\n", stderr);
1.95 schwarze 664: break;
665: case ARG_WORD:
1.190 schwarze 666: fputs("usage: whatis [-afk] [-C file] "
1.96 schwarze 667: "[-M path] [-m path] [-O outkey] [-S arch]\n"
668: "\t [-s section] name ...\n", stderr);
1.95 schwarze 669: break;
670: case ARG_EXPR:
1.190 schwarze 671: fputs("usage: apropos [-afk] [-C file] "
1.96 schwarze 672: "[-M path] [-m path] [-O outkey] [-S arch]\n"
1.95 schwarze 673: "\t [-s section] expression ...\n", stderr);
674: break;
675: }
1.47 schwarze 676: exit((int)MANDOCLEVEL_BADARG);
1.119 schwarze 677: }
678:
679: static int
680: fs_lookup(const struct manpaths *paths, size_t ipath,
681: const char *sec, const char *arch, const char *name,
682: struct manpage **res, size_t *ressz)
683: {
1.228 schwarze 684: struct stat sb;
1.127 schwarze 685: glob_t globinfo;
1.119 schwarze 686: struct manpage *page;
687: char *file;
1.177 schwarze 688: int globres;
689: enum form form;
1.119 schwarze 690:
1.127 schwarze 691: form = FORM_SRC;
1.119 schwarze 692: mandoc_asprintf(&file, "%s/man%s/%s.%s",
693: paths->paths[ipath], sec, name, sec);
1.228 schwarze 694: if (stat(file, &sb) != -1)
1.119 schwarze 695: goto found;
696: free(file);
697:
698: mandoc_asprintf(&file, "%s/cat%s/%s.0",
699: paths->paths[ipath], sec, name);
1.228 schwarze 700: if (stat(file, &sb) != -1) {
1.119 schwarze 701: form = FORM_CAT;
702: goto found;
703: }
704: free(file);
705:
706: if (arch != NULL) {
707: mandoc_asprintf(&file, "%s/man%s/%s/%s.%s",
708: paths->paths[ipath], sec, arch, name, sec);
1.228 schwarze 709: if (stat(file, &sb) != -1)
1.119 schwarze 710: goto found;
711: free(file);
712: }
1.127 schwarze 713:
1.145 schwarze 714: mandoc_asprintf(&file, "%s/man%s/%s.[01-9]*",
1.127 schwarze 715: paths->paths[ipath], sec, name);
716: globres = glob(file, 0, NULL, &globinfo);
717: if (globres != 0 && globres != GLOB_NOMATCH)
1.152 schwarze 718: warn("%s: glob", file);
1.127 schwarze 719: free(file);
720: if (globres == 0)
721: file = mandoc_strdup(*globinfo.gl_pathv);
722: globfree(&globinfo);
1.228 schwarze 723: if (globres == 0) {
724: if (stat(file, &sb) != -1)
725: goto found;
726: free(file);
727: }
1.199 schwarze 728: if (res != NULL || ipath + 1 != paths->sz)
1.150 schwarze 729: return 0;
1.119 schwarze 730:
1.199 schwarze 731: mandoc_asprintf(&file, "%s.%s", name, sec);
1.228 schwarze 732: globres = stat(file, &sb);
1.199 schwarze 733: free(file);
734: return globres != -1;
735:
1.119 schwarze 736: found:
1.152 schwarze 737: warnx("outdated mandoc.db lacks %s(%s) entry, run makewhatis %s",
738: name, sec, paths->paths[ipath]);
1.199 schwarze 739: if (res == NULL) {
740: free(file);
1.198 schwarze 741: return 1;
1.199 schwarze 742: }
1.119 schwarze 743: *res = mandoc_reallocarray(*res, ++*ressz, sizeof(struct manpage));
744: page = *res + (*ressz - 1);
745: page->file = file;
746: page->names = NULL;
747: page->output = NULL;
1.225 schwarze 748: page->bits = NAME_FILE & NAME_MASK;
1.119 schwarze 749: page->ipath = ipath;
750: page->sec = (*sec >= '1' && *sec <= '9') ? *sec - '1' + 1 : 10;
751: page->form = form;
1.150 schwarze 752: return 1;
1.119 schwarze 753: }
754:
1.198 schwarze 755: static int
1.119 schwarze 756: fs_search(const struct mansearch *cfg, const struct manpaths *paths,
757: int argc, char **argv, struct manpage **res, size_t *ressz)
758: {
759: const char *const sections[] =
1.171 schwarze 760: {"1", "8", "6", "2", "3", "5", "7", "4", "9", "3p"};
1.119 schwarze 761: const size_t nsec = sizeof(sections)/sizeof(sections[0]);
762:
763: size_t ipath, isec, lastsz;
764:
765: assert(cfg->argmode == ARG_NAME);
766:
1.198 schwarze 767: if (res != NULL)
768: *res = NULL;
1.119 schwarze 769: *ressz = lastsz = 0;
770: while (argc) {
771: for (ipath = 0; ipath < paths->sz; ipath++) {
772: if (cfg->sec != NULL) {
773: if (fs_lookup(paths, ipath, cfg->sec,
774: cfg->arch, *argv, res, ressz) &&
775: cfg->firstmatch)
1.198 schwarze 776: return 1;
1.119 schwarze 777: } else for (isec = 0; isec < nsec; isec++)
778: if (fs_lookup(paths, ipath, sections[isec],
779: cfg->arch, *argv, res, ressz) &&
780: cfg->firstmatch)
1.198 schwarze 781: return 1;
1.119 schwarze 782: }
1.208 schwarze 783: if (res != NULL && *ressz == lastsz &&
1.210 schwarze 784: strchr(*argv, '/') == NULL) {
1.223 schwarze 785: if (cfg->arch != NULL &&
786: arch_valid(cfg->arch, MANDOC_OS_OPENBSD) == 0)
787: warnx("Unknown architecture \"%s\".",
788: cfg->arch);
789: else if (cfg->sec == NULL)
1.210 schwarze 790: warnx("No entry for %s in the manual.",
791: *argv);
792: else
793: warnx("No entry for %s in section %s "
794: "of the manual.", *argv, cfg->sec);
795: }
1.119 schwarze 796: lastsz = *ressz;
797: argv++;
798: argc--;
799: }
1.198 schwarze 800: return 0;
1.1 kristaps 801: }
802:
1.27 schwarze 803: static void
1.132 schwarze 804: parse(struct curparse *curp, int fd, const char *file)
1.52 schwarze 805: {
1.218 schwarze 806: struct roff_meta *meta;
1.52 schwarze 807:
1.76 schwarze 808: /* Begin by parsing the file itself. */
1.52 schwarze 809:
1.76 schwarze 810: assert(file);
1.170 florian 811: assert(fd >= 0);
1.52 schwarze 812:
1.215 schwarze 813: mparse_readfd(curp->mp, fd, file);
1.168 schwarze 814: if (fd != STDIN_FILENO)
815: close(fd);
1.1 kristaps 816:
1.51 schwarze 817: /*
1.76 schwarze 818: * With -Wstop and warnings or errors of at least the requested
819: * level, do not produce output.
1.51 schwarze 820: */
821:
1.215 schwarze 822: if (curp->wstop && mandoc_msg_getrc() != MANDOCLEVEL_OK)
1.132 schwarze 823: return;
1.51 schwarze 824:
1.179 schwarze 825: if (curp->outdata == NULL)
826: outdata_alloc(curp);
1.222 schwarze 827: else if (curp->outtype == OUTT_HTML)
828: html_reset(curp);
1.51 schwarze 829:
1.218 schwarze 830: mandoc_xr_reset();
831: meta = mparse_result(curp->mp);
1.158 schwarze 832:
833: /* Execute the out device, if it exists. */
834:
1.218 schwarze 835: if (meta->macroset == MACROSET_MDOC) {
1.51 schwarze 836: switch (curp->outtype) {
1.90 schwarze 837: case OUTT_HTML:
1.218 schwarze 838: html_mdoc(curp->outdata, meta);
1.51 schwarze 839: break;
1.90 schwarze 840: case OUTT_TREE:
1.218 schwarze 841: tree_mdoc(curp->outdata, meta);
1.51 schwarze 842: break;
1.90 schwarze 843: case OUTT_MAN:
1.218 schwarze 844: man_mdoc(curp->outdata, meta);
1.78 schwarze 845: break;
1.90 schwarze 846: case OUTT_PDF:
847: case OUTT_ASCII:
848: case OUTT_UTF8:
849: case OUTT_LOCALE:
850: case OUTT_PS:
1.218 schwarze 851: terminal_mdoc(curp->outdata, meta);
1.158 schwarze 852: break;
1.188 schwarze 853: case OUTT_MARKDOWN:
1.218 schwarze 854: markdown_mdoc(curp->outdata, meta);
1.188 schwarze 855: break;
1.158 schwarze 856: default:
857: break;
858: }
859: }
1.218 schwarze 860: if (meta->macroset == MACROSET_MAN) {
1.158 schwarze 861: switch (curp->outtype) {
862: case OUTT_HTML:
1.218 schwarze 863: html_man(curp->outdata, meta);
1.158 schwarze 864: break;
865: case OUTT_TREE:
1.218 schwarze 866: tree_man(curp->outdata, meta);
1.158 schwarze 867: break;
868: case OUTT_MAN:
1.211 schwarze 869: mparse_copy(curp->mp);
1.158 schwarze 870: break;
871: case OUTT_PDF:
872: case OUTT_ASCII:
873: case OUTT_UTF8:
874: case OUTT_LOCALE:
875: case OUTT_PS:
1.218 schwarze 876: terminal_man(curp->outdata, meta);
1.51 schwarze 877: break;
878: default:
879: break;
880: }
1.179 schwarze 881: }
1.215 schwarze 882: if (mandoc_msg_getmin() < MANDOCERR_STYLE)
883: check_xr();
1.197 schwarze 884: }
885:
886: static void
1.215 schwarze 887: check_xr(void)
1.197 schwarze 888: {
889: static struct manpaths paths;
890: struct mansearch search;
891: struct mandoc_xr *xr;
892: size_t sz;
893:
894: if (paths.sz == 0)
895: manpath_base(&paths);
896:
897: for (xr = mandoc_xr_get(); xr != NULL; xr = xr->next) {
1.200 schwarze 898: if (xr->line == -1)
899: continue;
1.197 schwarze 900: search.arch = NULL;
901: search.sec = xr->sec;
902: search.outkey = NULL;
903: search.argmode = ARG_NAME;
904: search.firstmatch = 1;
905: if (mansearch(&search, &paths, 1, &xr->name, NULL, &sz))
1.198 schwarze 906: continue;
907: if (fs_search(&search, &paths, 1, &xr->name, NULL, &sz))
1.197 schwarze 908: continue;
1.201 schwarze 909: if (xr->count == 1)
1.216 schwarze 910: mandoc_msg(MANDOCERR_XR_BAD, xr->line,
911: xr->pos + 1, "Xr %s %s", xr->name, xr->sec);
1.201 schwarze 912: else
1.216 schwarze 913: mandoc_msg(MANDOCERR_XR_BAD, xr->line,
914: xr->pos + 1, "Xr %s %s (%d times)",
1.201 schwarze 915: xr->name, xr->sec, xr->count);
1.197 schwarze 916: }
1.179 schwarze 917: }
918:
919: static void
920: outdata_alloc(struct curparse *curp)
921: {
922: switch (curp->outtype) {
923: case OUTT_HTML:
924: curp->outdata = html_alloc(curp->outopts);
925: break;
926: case OUTT_UTF8:
927: curp->outdata = utf8_alloc(curp->outopts);
928: break;
929: case OUTT_LOCALE:
930: curp->outdata = locale_alloc(curp->outopts);
931: break;
932: case OUTT_ASCII:
933: curp->outdata = ascii_alloc(curp->outopts);
934: break;
935: case OUTT_PDF:
936: curp->outdata = pdf_alloc(curp->outopts);
937: break;
938: case OUTT_PS:
939: curp->outdata = ps_alloc(curp->outopts);
940: break;
941: default:
942: break;
1.51 schwarze 943: }
1.1 kristaps 944: }
945:
1.132 schwarze 946: static void
1.105 schwarze 947: passthrough(const char *file, int fd, int synopsis_only)
1.95 schwarze 948: {
1.105 schwarze 949: const char synb[] = "S\bSY\bYN\bNO\bOP\bPS\bSI\bIS\bS";
950: const char synr[] = "SYNOPSIS";
951:
952: FILE *stream;
1.95 schwarze 953: const char *syscall;
1.164 schwarze 954: char *line, *cp;
955: size_t linesz;
1.180 schwarze 956: ssize_t len, written;
1.105 schwarze 957: int print;
1.116 schwarze 958:
1.164 schwarze 959: line = NULL;
960: linesz = 0;
1.105 schwarze 961:
1.180 schwarze 962: if (fflush(stdout) == EOF) {
963: syscall = "fflush";
964: goto fail;
965: }
966:
1.105 schwarze 967: if ((stream = fdopen(fd, "r")) == NULL) {
968: close(fd);
969: syscall = "fdopen";
970: goto fail;
971: }
1.95 schwarze 972:
1.105 schwarze 973: print = 0;
1.180 schwarze 974: while ((len = getline(&line, &linesz, stream)) != -1) {
1.164 schwarze 975: cp = line;
1.105 schwarze 976: if (synopsis_only) {
977: if (print) {
1.164 schwarze 978: if ( ! isspace((unsigned char)*cp))
1.105 schwarze 979: goto done;
1.180 schwarze 980: while (isspace((unsigned char)*cp)) {
1.164 schwarze 981: cp++;
1.180 schwarze 982: len--;
983: }
1.105 schwarze 984: } else {
1.164 schwarze 985: if (strcmp(cp, synb) == 0 ||
986: strcmp(cp, synr) == 0)
1.105 schwarze 987: print = 1;
988: continue;
989: }
990: }
1.180 schwarze 991: for (; len > 0; len -= written) {
992: if ((written = write(STDOUT_FILENO, cp, len)) != -1)
993: continue;
1.164 schwarze 994: fclose(stream);
1.180 schwarze 995: syscall = "write";
1.164 schwarze 996: goto fail;
997: }
1.105 schwarze 998: }
1.95 schwarze 999:
1.105 schwarze 1000: if (ferror(stream)) {
1001: fclose(stream);
1.164 schwarze 1002: syscall = "getline";
1.105 schwarze 1003: goto fail;
1004: }
1.101 schwarze 1005:
1.105 schwarze 1006: done:
1.164 schwarze 1007: free(line);
1.105 schwarze 1008: fclose(stream);
1.132 schwarze 1009: return;
1.95 schwarze 1010:
1011: fail:
1.164 schwarze 1012: free(line);
1.152 schwarze 1013: warn("%s: SYSERR: %s", file, syscall);
1.215 schwarze 1014: mandoc_msg_setrc(MANDOCLEVEL_SYSERR);
1.103 schwarze 1015: }
1016:
1017: static int
1018: koptions(int *options, char *arg)
1019: {
1020:
1021: if ( ! strcmp(arg, "utf-8")) {
1022: *options |= MPARSE_UTF8;
1023: *options &= ~MPARSE_LATIN1;
1024: } else if ( ! strcmp(arg, "iso-8859-1")) {
1025: *options |= MPARSE_LATIN1;
1026: *options &= ~MPARSE_UTF8;
1027: } else if ( ! strcmp(arg, "us-ascii")) {
1028: *options &= ~(MPARSE_UTF8 | MPARSE_LATIN1);
1029: } else {
1.152 schwarze 1030: warnx("-K %s: Bad argument", arg);
1.150 schwarze 1031: return 0;
1.103 schwarze 1032: }
1.150 schwarze 1033: return 1;
1.95 schwarze 1034: }
1035:
1.189 schwarze 1036: static void
1.87 schwarze 1037: moptions(int *options, char *arg)
1.1 kristaps 1038: {
1039:
1.95 schwarze 1040: if (arg == NULL)
1.189 schwarze 1041: return;
1042: if (strcmp(arg, "doc") == 0)
1.87 schwarze 1043: *options |= MPARSE_MDOC;
1.189 schwarze 1044: else if (strcmp(arg, "an") == 0)
1.87 schwarze 1045: *options |= MPARSE_MAN;
1.1 kristaps 1046: }
1047:
1048: static int
1.22 schwarze 1049: toptions(struct curparse *curp, char *arg)
1.1 kristaps 1050: {
1051:
1052: if (0 == strcmp(arg, "ascii"))
1.22 schwarze 1053: curp->outtype = OUTT_ASCII;
1054: else if (0 == strcmp(arg, "lint")) {
1055: curp->outtype = OUTT_LINT;
1.215 schwarze 1056: mandoc_msg_setoutfile(stdout);
1057: mandoc_msg_setmin(MANDOCERR_BASE);
1.76 schwarze 1058: } else if (0 == strcmp(arg, "tree"))
1.22 schwarze 1059: curp->outtype = OUTT_TREE;
1.78 schwarze 1060: else if (0 == strcmp(arg, "man"))
1061: curp->outtype = OUTT_MAN;
1.17 schwarze 1062: else if (0 == strcmp(arg, "html"))
1.22 schwarze 1063: curp->outtype = OUTT_HTML;
1.188 schwarze 1064: else if (0 == strcmp(arg, "markdown"))
1065: curp->outtype = OUTT_MARKDOWN;
1.77 schwarze 1066: else if (0 == strcmp(arg, "utf8"))
1067: curp->outtype = OUTT_UTF8;
1068: else if (0 == strcmp(arg, "locale"))
1069: curp->outtype = OUTT_LOCALE;
1.36 schwarze 1070: else if (0 == strcmp(arg, "ps"))
1071: curp->outtype = OUTT_PS;
1.43 schwarze 1072: else if (0 == strcmp(arg, "pdf"))
1073: curp->outtype = OUTT_PDF;
1.1 kristaps 1074: else {
1.152 schwarze 1075: warnx("-T %s: Bad argument", arg);
1.150 schwarze 1076: return 0;
1.1 kristaps 1077: }
1078:
1.150 schwarze 1079: return 1;
1.1 kristaps 1080: }
1081:
1082: static int
1.45 schwarze 1083: woptions(struct curparse *curp, char *arg)
1.1 kristaps 1084: {
1.10 schwarze 1085: char *v, *o;
1.196 schwarze 1086: const char *toks[11];
1.1 kristaps 1087:
1.45 schwarze 1088: toks[0] = "stop";
1089: toks[1] = "all";
1.196 schwarze 1090: toks[2] = "base";
1091: toks[3] = "style";
1092: toks[4] = "warning";
1093: toks[5] = "error";
1094: toks[6] = "unsupp";
1095: toks[7] = "fatal";
1096: toks[8] = "openbsd";
1097: toks[9] = "netbsd";
1098: toks[10] = NULL;
1.1 kristaps 1099:
1.10 schwarze 1100: while (*arg) {
1101: o = arg;
1.176 schwarze 1102: switch (getsubopt(&arg, (char * const *)toks, &v)) {
1.90 schwarze 1103: case 0:
1.45 schwarze 1104: curp->wstop = 1;
1.1 kristaps 1105: break;
1.90 schwarze 1106: case 1:
1107: case 2:
1.215 schwarze 1108: mandoc_msg_setmin(MANDOCERR_BASE);
1.193 schwarze 1109: break;
1110: case 3:
1.215 schwarze 1111: mandoc_msg_setmin(MANDOCERR_STYLE);
1.1 kristaps 1112: break;
1.193 schwarze 1113: case 4:
1.215 schwarze 1114: mandoc_msg_setmin(MANDOCERR_WARNING);
1.1 kristaps 1115: break;
1.193 schwarze 1116: case 5:
1.215 schwarze 1117: mandoc_msg_setmin(MANDOCERR_ERROR);
1.123 schwarze 1118: break;
1.193 schwarze 1119: case 6:
1.215 schwarze 1120: mandoc_msg_setmin(MANDOCERR_UNSUPP);
1.196 schwarze 1121: break;
1122: case 7:
1.215 schwarze 1123: mandoc_msg_setmin(MANDOCERR_MAX);
1.196 schwarze 1124: break;
1125: case 8:
1.215 schwarze 1126: mandoc_msg_setmin(MANDOCERR_BASE);
1.196 schwarze 1127: curp->os_e = MANDOC_OS_OPENBSD;
1128: break;
1129: case 9:
1.215 schwarze 1130: mandoc_msg_setmin(MANDOCERR_BASE);
1.196 schwarze 1131: curp->os_e = MANDOC_OS_NETBSD;
1.19 schwarze 1132: break;
1.1 kristaps 1133: default:
1.152 schwarze 1134: warnx("-W %s: Bad argument", o);
1.150 schwarze 1135: return 0;
1.1 kristaps 1136: }
1.10 schwarze 1137: }
1.150 schwarze 1138: return 1;
1.95 schwarze 1139: }
1140:
1.130 schwarze 1141: static pid_t
1.149 schwarze 1142: spawn_pager(struct tag_files *tag_files)
1.95 schwarze 1143: {
1.172 schwarze 1144: const struct timespec timeout = { 0, 100000000 }; /* 0.1s */
1.95 schwarze 1145: #define MAX_PAGER_ARGS 16
1146: char *argv[MAX_PAGER_ARGS];
1147: const char *pager;
1148: char *cp;
1.144 schwarze 1149: size_t cmdlen;
1.212 schwarze 1150: int argc, use_ofn;
1.130 schwarze 1151: pid_t pager_pid;
1.95 schwarze 1152:
1.144 schwarze 1153: pager = getenv("MANPAGER");
1154: if (pager == NULL || *pager == '\0')
1155: pager = getenv("PAGER");
1156: if (pager == NULL || *pager == '\0')
1157: pager = "more -s";
1158: cp = mandoc_strdup(pager);
1159:
1160: /*
1161: * Parse the pager command into words.
1162: * Intentionally do not do anything fancy here.
1163: */
1164:
1165: argc = 0;
1.212 schwarze 1166: while (argc + 5 < MAX_PAGER_ARGS) {
1.144 schwarze 1167: argv[argc++] = cp;
1168: cp = strchr(cp, ' ');
1169: if (cp == NULL)
1170: break;
1171: *cp++ = '\0';
1172: while (*cp == ' ')
1173: cp++;
1174: if (*cp == '\0')
1175: break;
1176: }
1177:
1.149 schwarze 1178: /* For more(1) and less(1), use the tag file. */
1.144 schwarze 1179:
1.212 schwarze 1180: use_ofn = 1;
1.149 schwarze 1181: if ((cmdlen = strlen(argv[0])) >= 4) {
1.144 schwarze 1182: cp = argv[0] + cmdlen - 4;
1.149 schwarze 1183: if (strcmp(cp, "less") == 0 || strcmp(cp, "more") == 0) {
1184: argv[argc++] = mandoc_strdup("-T");
1185: argv[argc++] = tag_files->tfn;
1.212 schwarze 1186: if (tag_files->tagname != NULL) {
1187: argv[argc++] = mandoc_strdup("-t");
1188: argv[argc++] = tag_files->tagname;
1189: use_ofn = 0;
1190: }
1.149 schwarze 1191: }
1.144 schwarze 1192: }
1.212 schwarze 1193: if (use_ofn)
1194: argv[argc++] = tag_files->ofn;
1.144 schwarze 1195: argv[argc] = NULL;
1196:
1.130 schwarze 1197: switch (pager_pid = fork()) {
1.95 schwarze 1198: case -1:
1.152 schwarze 1199: err((int)MANDOCLEVEL_SYSERR, "fork");
1.95 schwarze 1200: case 0:
1.129 schwarze 1201: break;
1202: default:
1.165 schwarze 1203: (void)setpgid(pager_pid, 0);
1.182 schwarze 1204: (void)tcsetpgrp(tag_files->ofd, pager_pid);
1.165 schwarze 1205: if (pledge("stdio rpath tmppath tty proc", NULL) == -1)
1.163 schwarze 1206: err((int)MANDOCLEVEL_SYSERR, "pledge");
1.166 schwarze 1207: tag_files->pager_pid = pager_pid;
1.150 schwarze 1208: return pager_pid;
1.95 schwarze 1209: }
1210:
1.129 schwarze 1211: /* The child process becomes the pager. */
1.95 schwarze 1212:
1.152 schwarze 1213: if (dup2(tag_files->ofd, STDOUT_FILENO) == -1)
1214: err((int)MANDOCLEVEL_SYSERR, "pager stdout");
1.149 schwarze 1215: close(tag_files->ofd);
1.206 tb 1216: assert(tag_files->tfd == -1);
1.172 schwarze 1217:
1218: /* Do not start the pager before controlling the terminal. */
1219:
1.182 schwarze 1220: while (tcgetpgrp(STDOUT_FILENO) != getpid())
1.172 schwarze 1221: nanosleep(&timeout, NULL);
1222:
1.95 schwarze 1223: execvp(argv[0], argv);
1.152 schwarze 1224: err((int)MANDOCLEVEL_SYSERR, "exec %s", argv[0]);
1.30 schwarze 1225: }