Annotation of src/usr.bin/mandoc/main.c, Revision 1.230
1.230 ! espie 1: /* $OpenBSD: main.c,v 1.229 2019/05/03 18:38:44 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();
1.230 ! espie 477: if (tag_files != NULL)
! 478: tag_files->tagname = conf.output.tag;
1.219 schwarze 479: }
1.215 schwarze 480: thisarg = "<stdin>";
481: mandoc_msg_setinfilename(thisarg);
482: parse(&curp, STDIN_FILENO, thisarg);
483: mandoc_msg_setinfilename(NULL);
1.118 schwarze 484: }
1.27 schwarze 485:
1.208 schwarze 486: /*
487: * Remember the original working directory, if possible.
488: * This will be needed if some names on the command line
489: * are page names and some are relative file names.
490: * Do not error out if the current directory is not
491: * readable: Maybe it won't be needed after all.
492: */
493: startdir = open(".", O_RDONLY | O_DIRECTORY);
494:
1.124 schwarze 495: while (argc > 0) {
1.208 schwarze 496:
497: /*
498: * Changing directories is not needed in ARG_FILE mode.
499: * Do it on a best-effort basis. Even in case of
500: * failure, some functionality may still work.
501: */
502: if (resp != NULL) {
503: if (resp->ipath != SIZE_MAX)
504: (void)chdir(conf.manpath.paths[resp->ipath]);
505: else if (startdir != -1)
506: (void)fchdir(startdir);
1.215 schwarze 507: thisarg = resp->file;
508: } else
509: thisarg = *argv;
1.208 schwarze 510:
1.215 schwarze 511: fd = mparse_open(curp.mp, thisarg);
1.118 schwarze 512: if (fd != -1) {
1.149 schwarze 513: if (use_pager) {
1.212 schwarze 514: use_pager = 0;
1.149 schwarze 515: tag_files = tag_init();
1.230 ! espie 516: if (tag_files != NULL)
! 517: tag_files->tagname = conf.output.tag;
1.149 schwarze 518: }
1.118 schwarze 519:
1.217 schwarze 520: mandoc_msg_setinfilename(thisarg);
1.215 schwarze 521: if (resp == NULL || resp->form == FORM_SRC)
522: parse(&curp, fd, thisarg);
1.208 schwarze 523: else
1.135 schwarze 524: passthrough(resp->file, fd,
525: conf.output.synopsisonly);
1.217 schwarze 526: mandoc_msg_setinfilename(NULL);
1.205 schwarze 527:
528: if (ferror(stdout)) {
529: if (tag_files != NULL) {
530: warn("%s", tag_files->ofn);
531: tag_unlink();
532: tag_files = NULL;
533: } else
534: warn("stdout");
1.215 schwarze 535: mandoc_msg_setrc(MANDOCLEVEL_SYSERR);
1.205 schwarze 536: break;
537: }
1.118 schwarze 538:
1.179 schwarze 539: if (argc > 1 && curp.outtype <= OUTT_UTF8) {
540: if (curp.outdata == NULL)
541: outdata_alloc(&curp);
1.173 schwarze 542: terminal_sepline(curp.outdata);
1.179 schwarze 543: }
1.217 schwarze 544: } else
545: mandoc_msg(MANDOCERR_FILE, 0, 0,
1.221 schwarze 546: "%s: %s", thisarg, strerror(errno));
1.100 schwarze 547:
1.215 schwarze 548: if (curp.wstop && mandoc_msg_getrc() != MANDOCLEVEL_OK)
1.27 schwarze 549: break;
1.116 schwarze 550:
1.118 schwarze 551: if (resp != NULL)
552: resp++;
553: else
554: argv++;
555: if (--argc)
556: mparse_reset(curp.mp);
1.1 kristaps 557: }
1.208 schwarze 558: if (startdir != -1) {
559: (void)fchdir(startdir);
560: close(startdir);
561: }
1.1 kristaps 562:
1.160 schwarze 563: if (curp.outdata != NULL) {
564: switch (curp.outtype) {
565: case OUTT_HTML:
566: html_free(curp.outdata);
567: break;
568: case OUTT_UTF8:
569: case OUTT_LOCALE:
570: case OUTT_ASCII:
571: ascii_free(curp.outdata);
572: break;
573: case OUTT_PDF:
574: case OUTT_PS:
575: pspdf_free(curp.outdata);
576: break;
577: default:
578: break;
579: }
1.158 schwarze 580: }
1.197 schwarze 581: mandoc_xr_free();
1.102 schwarze 582: mparse_free(curp.mp);
1.155 schwarze 583: mchars_free();
1.95 schwarze 584:
585: out:
586: if (search.argmode != ARG_FILE) {
1.134 schwarze 587: manconf_free(&conf);
1.95 schwarze 588: mansearch_free(res, sz);
589: }
590:
1.196 schwarze 591: free(curp.os_s);
1.1 kristaps 592:
1.129 schwarze 593: /*
1.149 schwarze 594: * When using a pager, finish writing both temporary files,
595: * fork it, wait for the user to close it, and clean up.
1.129 schwarze 596: */
597:
1.149 schwarze 598: if (tag_files != NULL) {
1.130 schwarze 599: fclose(stdout);
1.144 schwarze 600: tag_write();
1.166 schwarze 601: man_pgid = getpgid(0);
602: tag_files->tcpgid = man_pgid == getpid() ?
603: getpgid(getppid()) : man_pgid;
604: pager_pid = 0;
605: signum = SIGSTOP;
1.165 schwarze 606: for (;;) {
1.166 schwarze 607:
608: /* Stop here until moved to the foreground. */
609:
1.182 schwarze 610: tc_pgid = tcgetpgrp(tag_files->ofd);
1.166 schwarze 611: if (tc_pgid != man_pgid) {
612: if (tc_pgid == pager_pid) {
1.182 schwarze 613: (void)tcsetpgrp(tag_files->ofd,
1.166 schwarze 614: man_pgid);
615: if (signum == SIGTTIN)
616: continue;
617: } else
618: tag_files->tcpgid = tc_pgid;
619: kill(0, signum);
620: continue;
621: }
622:
623: /* Once in the foreground, activate the pager. */
624:
625: if (pager_pid) {
1.182 schwarze 626: (void)tcsetpgrp(tag_files->ofd, pager_pid);
1.166 schwarze 627: kill(pager_pid, SIGCONT);
628: } else
629: pager_pid = spawn_pager(tag_files);
630:
631: /* Wait for the pager to stop or exit. */
632:
633: while ((pid = waitpid(pager_pid, &status,
634: WUNTRACED)) == -1 && errno == EINTR)
635: continue;
636:
637: if (pid == -1) {
1.165 schwarze 638: warn("wait");
1.215 schwarze 639: mandoc_msg_setrc(MANDOCLEVEL_SYSERR);
1.165 schwarze 640: break;
641: }
642: if (!WIFSTOPPED(status))
643: break;
644:
1.166 schwarze 645: signum = WSTOPSIG(status);
1.165 schwarze 646: }
1.144 schwarze 647: tag_unlink();
1.130 schwarze 648: }
1.215 schwarze 649: return (int)mandoc_msg_getrc();
1.1 kristaps 650: }
651:
1.20 schwarze 652: static void
1.95 schwarze 653: usage(enum argmode argmode)
1.1 kristaps 654: {
655:
1.95 schwarze 656: switch (argmode) {
657: case ARG_FILE:
1.190 schwarze 658: fputs("usage: mandoc [-ac] [-I os=name] "
659: "[-K encoding] [-mdoc | -man] [-O options]\n"
1.133 schwarze 660: "\t [-T output] [-W level] [file ...]\n", stderr);
1.95 schwarze 661: break;
662: case ARG_NAME:
1.190 schwarze 663: fputs("usage: man [-acfhklw] [-C file] [-M path] "
664: "[-m path] [-S subsection]\n"
665: "\t [[-s] section] name ...\n", stderr);
1.95 schwarze 666: break;
667: case ARG_WORD:
1.190 schwarze 668: fputs("usage: whatis [-afk] [-C file] "
1.96 schwarze 669: "[-M path] [-m path] [-O outkey] [-S arch]\n"
670: "\t [-s section] name ...\n", stderr);
1.95 schwarze 671: break;
672: case ARG_EXPR:
1.190 schwarze 673: fputs("usage: apropos [-afk] [-C file] "
1.96 schwarze 674: "[-M path] [-m path] [-O outkey] [-S arch]\n"
1.95 schwarze 675: "\t [-s section] expression ...\n", stderr);
676: break;
677: }
1.47 schwarze 678: exit((int)MANDOCLEVEL_BADARG);
1.119 schwarze 679: }
680:
681: static int
682: fs_lookup(const struct manpaths *paths, size_t ipath,
683: const char *sec, const char *arch, const char *name,
684: struct manpage **res, size_t *ressz)
685: {
1.228 schwarze 686: struct stat sb;
1.127 schwarze 687: glob_t globinfo;
1.119 schwarze 688: struct manpage *page;
689: char *file;
1.177 schwarze 690: int globres;
691: enum form form;
1.119 schwarze 692:
1.127 schwarze 693: form = FORM_SRC;
1.119 schwarze 694: mandoc_asprintf(&file, "%s/man%s/%s.%s",
695: paths->paths[ipath], sec, name, sec);
1.228 schwarze 696: if (stat(file, &sb) != -1)
1.119 schwarze 697: goto found;
698: free(file);
699:
700: mandoc_asprintf(&file, "%s/cat%s/%s.0",
701: paths->paths[ipath], sec, name);
1.228 schwarze 702: if (stat(file, &sb) != -1) {
1.119 schwarze 703: form = FORM_CAT;
704: goto found;
705: }
706: free(file);
707:
708: if (arch != NULL) {
709: mandoc_asprintf(&file, "%s/man%s/%s/%s.%s",
710: paths->paths[ipath], sec, arch, name, sec);
1.228 schwarze 711: if (stat(file, &sb) != -1)
1.119 schwarze 712: goto found;
713: free(file);
714: }
1.127 schwarze 715:
1.145 schwarze 716: mandoc_asprintf(&file, "%s/man%s/%s.[01-9]*",
1.127 schwarze 717: paths->paths[ipath], sec, name);
718: globres = glob(file, 0, NULL, &globinfo);
719: if (globres != 0 && globres != GLOB_NOMATCH)
1.152 schwarze 720: warn("%s: glob", file);
1.127 schwarze 721: free(file);
722: if (globres == 0)
723: file = mandoc_strdup(*globinfo.gl_pathv);
724: globfree(&globinfo);
1.228 schwarze 725: if (globres == 0) {
726: if (stat(file, &sb) != -1)
727: goto found;
728: free(file);
729: }
1.199 schwarze 730: if (res != NULL || ipath + 1 != paths->sz)
1.150 schwarze 731: return 0;
1.119 schwarze 732:
1.199 schwarze 733: mandoc_asprintf(&file, "%s.%s", name, sec);
1.228 schwarze 734: globres = stat(file, &sb);
1.199 schwarze 735: free(file);
736: return globres != -1;
737:
1.119 schwarze 738: found:
1.152 schwarze 739: warnx("outdated mandoc.db lacks %s(%s) entry, run makewhatis %s",
740: name, sec, paths->paths[ipath]);
1.199 schwarze 741: if (res == NULL) {
742: free(file);
1.198 schwarze 743: return 1;
1.199 schwarze 744: }
1.119 schwarze 745: *res = mandoc_reallocarray(*res, ++*ressz, sizeof(struct manpage));
746: page = *res + (*ressz - 1);
747: page->file = file;
748: page->names = NULL;
749: page->output = NULL;
1.225 schwarze 750: page->bits = NAME_FILE & NAME_MASK;
1.119 schwarze 751: page->ipath = ipath;
752: page->sec = (*sec >= '1' && *sec <= '9') ? *sec - '1' + 1 : 10;
753: page->form = form;
1.150 schwarze 754: return 1;
1.119 schwarze 755: }
756:
1.198 schwarze 757: static int
1.119 schwarze 758: fs_search(const struct mansearch *cfg, const struct manpaths *paths,
759: int argc, char **argv, struct manpage **res, size_t *ressz)
760: {
761: const char *const sections[] =
1.171 schwarze 762: {"1", "8", "6", "2", "3", "5", "7", "4", "9", "3p"};
1.119 schwarze 763: const size_t nsec = sizeof(sections)/sizeof(sections[0]);
764:
765: size_t ipath, isec, lastsz;
766:
767: assert(cfg->argmode == ARG_NAME);
768:
1.198 schwarze 769: if (res != NULL)
770: *res = NULL;
1.119 schwarze 771: *ressz = lastsz = 0;
772: while (argc) {
773: for (ipath = 0; ipath < paths->sz; ipath++) {
774: if (cfg->sec != NULL) {
775: if (fs_lookup(paths, ipath, cfg->sec,
776: cfg->arch, *argv, res, ressz) &&
777: cfg->firstmatch)
1.198 schwarze 778: return 1;
1.119 schwarze 779: } else for (isec = 0; isec < nsec; isec++)
780: if (fs_lookup(paths, ipath, sections[isec],
781: cfg->arch, *argv, res, ressz) &&
782: cfg->firstmatch)
1.198 schwarze 783: return 1;
1.119 schwarze 784: }
1.208 schwarze 785: if (res != NULL && *ressz == lastsz &&
1.210 schwarze 786: strchr(*argv, '/') == NULL) {
1.223 schwarze 787: if (cfg->arch != NULL &&
788: arch_valid(cfg->arch, MANDOC_OS_OPENBSD) == 0)
789: warnx("Unknown architecture \"%s\".",
790: cfg->arch);
791: else if (cfg->sec == NULL)
1.210 schwarze 792: warnx("No entry for %s in the manual.",
793: *argv);
794: else
795: warnx("No entry for %s in section %s "
796: "of the manual.", *argv, cfg->sec);
797: }
1.119 schwarze 798: lastsz = *ressz;
799: argv++;
800: argc--;
801: }
1.198 schwarze 802: return 0;
1.1 kristaps 803: }
804:
1.27 schwarze 805: static void
1.132 schwarze 806: parse(struct curparse *curp, int fd, const char *file)
1.52 schwarze 807: {
1.218 schwarze 808: struct roff_meta *meta;
1.52 schwarze 809:
1.76 schwarze 810: /* Begin by parsing the file itself. */
1.52 schwarze 811:
1.76 schwarze 812: assert(file);
1.170 florian 813: assert(fd >= 0);
1.52 schwarze 814:
1.215 schwarze 815: mparse_readfd(curp->mp, fd, file);
1.168 schwarze 816: if (fd != STDIN_FILENO)
817: close(fd);
1.1 kristaps 818:
1.51 schwarze 819: /*
1.76 schwarze 820: * With -Wstop and warnings or errors of at least the requested
821: * level, do not produce output.
1.51 schwarze 822: */
823:
1.215 schwarze 824: if (curp->wstop && mandoc_msg_getrc() != MANDOCLEVEL_OK)
1.132 schwarze 825: return;
1.51 schwarze 826:
1.179 schwarze 827: if (curp->outdata == NULL)
828: outdata_alloc(curp);
1.222 schwarze 829: else if (curp->outtype == OUTT_HTML)
830: html_reset(curp);
1.51 schwarze 831:
1.218 schwarze 832: mandoc_xr_reset();
833: meta = mparse_result(curp->mp);
1.158 schwarze 834:
835: /* Execute the out device, if it exists. */
836:
1.218 schwarze 837: if (meta->macroset == MACROSET_MDOC) {
1.51 schwarze 838: switch (curp->outtype) {
1.90 schwarze 839: case OUTT_HTML:
1.218 schwarze 840: html_mdoc(curp->outdata, meta);
1.51 schwarze 841: break;
1.90 schwarze 842: case OUTT_TREE:
1.218 schwarze 843: tree_mdoc(curp->outdata, meta);
1.51 schwarze 844: break;
1.90 schwarze 845: case OUTT_MAN:
1.218 schwarze 846: man_mdoc(curp->outdata, meta);
1.78 schwarze 847: break;
1.90 schwarze 848: case OUTT_PDF:
849: case OUTT_ASCII:
850: case OUTT_UTF8:
851: case OUTT_LOCALE:
852: case OUTT_PS:
1.218 schwarze 853: terminal_mdoc(curp->outdata, meta);
1.158 schwarze 854: break;
1.188 schwarze 855: case OUTT_MARKDOWN:
1.218 schwarze 856: markdown_mdoc(curp->outdata, meta);
1.188 schwarze 857: break;
1.158 schwarze 858: default:
859: break;
860: }
861: }
1.218 schwarze 862: if (meta->macroset == MACROSET_MAN) {
1.158 schwarze 863: switch (curp->outtype) {
864: case OUTT_HTML:
1.218 schwarze 865: html_man(curp->outdata, meta);
1.158 schwarze 866: break;
867: case OUTT_TREE:
1.218 schwarze 868: tree_man(curp->outdata, meta);
1.158 schwarze 869: break;
870: case OUTT_MAN:
1.211 schwarze 871: mparse_copy(curp->mp);
1.158 schwarze 872: break;
873: case OUTT_PDF:
874: case OUTT_ASCII:
875: case OUTT_UTF8:
876: case OUTT_LOCALE:
877: case OUTT_PS:
1.218 schwarze 878: terminal_man(curp->outdata, meta);
1.51 schwarze 879: break;
880: default:
881: break;
882: }
1.179 schwarze 883: }
1.215 schwarze 884: if (mandoc_msg_getmin() < MANDOCERR_STYLE)
885: check_xr();
1.197 schwarze 886: }
887:
888: static void
1.215 schwarze 889: check_xr(void)
1.197 schwarze 890: {
891: static struct manpaths paths;
892: struct mansearch search;
893: struct mandoc_xr *xr;
894: size_t sz;
895:
896: if (paths.sz == 0)
897: manpath_base(&paths);
898:
899: for (xr = mandoc_xr_get(); xr != NULL; xr = xr->next) {
1.200 schwarze 900: if (xr->line == -1)
901: continue;
1.197 schwarze 902: search.arch = NULL;
903: search.sec = xr->sec;
904: search.outkey = NULL;
905: search.argmode = ARG_NAME;
906: search.firstmatch = 1;
907: if (mansearch(&search, &paths, 1, &xr->name, NULL, &sz))
1.198 schwarze 908: continue;
909: if (fs_search(&search, &paths, 1, &xr->name, NULL, &sz))
1.197 schwarze 910: continue;
1.201 schwarze 911: if (xr->count == 1)
1.216 schwarze 912: mandoc_msg(MANDOCERR_XR_BAD, xr->line,
913: xr->pos + 1, "Xr %s %s", xr->name, xr->sec);
1.201 schwarze 914: else
1.216 schwarze 915: mandoc_msg(MANDOCERR_XR_BAD, xr->line,
916: xr->pos + 1, "Xr %s %s (%d times)",
1.201 schwarze 917: xr->name, xr->sec, xr->count);
1.197 schwarze 918: }
1.179 schwarze 919: }
920:
921: static void
922: outdata_alloc(struct curparse *curp)
923: {
924: switch (curp->outtype) {
925: case OUTT_HTML:
926: curp->outdata = html_alloc(curp->outopts);
927: break;
928: case OUTT_UTF8:
929: curp->outdata = utf8_alloc(curp->outopts);
930: break;
931: case OUTT_LOCALE:
932: curp->outdata = locale_alloc(curp->outopts);
933: break;
934: case OUTT_ASCII:
935: curp->outdata = ascii_alloc(curp->outopts);
936: break;
937: case OUTT_PDF:
938: curp->outdata = pdf_alloc(curp->outopts);
939: break;
940: case OUTT_PS:
941: curp->outdata = ps_alloc(curp->outopts);
942: break;
943: default:
944: break;
1.51 schwarze 945: }
1.1 kristaps 946: }
947:
1.132 schwarze 948: static void
1.105 schwarze 949: passthrough(const char *file, int fd, int synopsis_only)
1.95 schwarze 950: {
1.105 schwarze 951: const char synb[] = "S\bSY\bYN\bNO\bOP\bPS\bSI\bIS\bS";
952: const char synr[] = "SYNOPSIS";
953:
954: FILE *stream;
1.95 schwarze 955: const char *syscall;
1.164 schwarze 956: char *line, *cp;
957: size_t linesz;
1.180 schwarze 958: ssize_t len, written;
1.105 schwarze 959: int print;
1.116 schwarze 960:
1.164 schwarze 961: line = NULL;
962: linesz = 0;
1.105 schwarze 963:
1.180 schwarze 964: if (fflush(stdout) == EOF) {
965: syscall = "fflush";
966: goto fail;
967: }
968:
1.105 schwarze 969: if ((stream = fdopen(fd, "r")) == NULL) {
970: close(fd);
971: syscall = "fdopen";
972: goto fail;
973: }
1.95 schwarze 974:
1.105 schwarze 975: print = 0;
1.180 schwarze 976: while ((len = getline(&line, &linesz, stream)) != -1) {
1.164 schwarze 977: cp = line;
1.105 schwarze 978: if (synopsis_only) {
979: if (print) {
1.164 schwarze 980: if ( ! isspace((unsigned char)*cp))
1.105 schwarze 981: goto done;
1.180 schwarze 982: while (isspace((unsigned char)*cp)) {
1.164 schwarze 983: cp++;
1.180 schwarze 984: len--;
985: }
1.105 schwarze 986: } else {
1.164 schwarze 987: if (strcmp(cp, synb) == 0 ||
988: strcmp(cp, synr) == 0)
1.105 schwarze 989: print = 1;
990: continue;
991: }
992: }
1.180 schwarze 993: for (; len > 0; len -= written) {
994: if ((written = write(STDOUT_FILENO, cp, len)) != -1)
995: continue;
1.164 schwarze 996: fclose(stream);
1.180 schwarze 997: syscall = "write";
1.164 schwarze 998: goto fail;
999: }
1.105 schwarze 1000: }
1.95 schwarze 1001:
1.105 schwarze 1002: if (ferror(stream)) {
1003: fclose(stream);
1.164 schwarze 1004: syscall = "getline";
1.105 schwarze 1005: goto fail;
1006: }
1.101 schwarze 1007:
1.105 schwarze 1008: done:
1.164 schwarze 1009: free(line);
1.105 schwarze 1010: fclose(stream);
1.132 schwarze 1011: return;
1.95 schwarze 1012:
1013: fail:
1.164 schwarze 1014: free(line);
1.152 schwarze 1015: warn("%s: SYSERR: %s", file, syscall);
1.215 schwarze 1016: mandoc_msg_setrc(MANDOCLEVEL_SYSERR);
1.103 schwarze 1017: }
1018:
1019: static int
1020: koptions(int *options, char *arg)
1021: {
1022:
1023: if ( ! strcmp(arg, "utf-8")) {
1024: *options |= MPARSE_UTF8;
1025: *options &= ~MPARSE_LATIN1;
1026: } else if ( ! strcmp(arg, "iso-8859-1")) {
1027: *options |= MPARSE_LATIN1;
1028: *options &= ~MPARSE_UTF8;
1029: } else if ( ! strcmp(arg, "us-ascii")) {
1030: *options &= ~(MPARSE_UTF8 | MPARSE_LATIN1);
1031: } else {
1.152 schwarze 1032: warnx("-K %s: Bad argument", arg);
1.150 schwarze 1033: return 0;
1.103 schwarze 1034: }
1.150 schwarze 1035: return 1;
1.95 schwarze 1036: }
1037:
1.189 schwarze 1038: static void
1.87 schwarze 1039: moptions(int *options, char *arg)
1.1 kristaps 1040: {
1041:
1.95 schwarze 1042: if (arg == NULL)
1.189 schwarze 1043: return;
1044: if (strcmp(arg, "doc") == 0)
1.87 schwarze 1045: *options |= MPARSE_MDOC;
1.189 schwarze 1046: else if (strcmp(arg, "an") == 0)
1.87 schwarze 1047: *options |= MPARSE_MAN;
1.1 kristaps 1048: }
1049:
1050: static int
1.22 schwarze 1051: toptions(struct curparse *curp, char *arg)
1.1 kristaps 1052: {
1053:
1054: if (0 == strcmp(arg, "ascii"))
1.22 schwarze 1055: curp->outtype = OUTT_ASCII;
1056: else if (0 == strcmp(arg, "lint")) {
1057: curp->outtype = OUTT_LINT;
1.215 schwarze 1058: mandoc_msg_setoutfile(stdout);
1059: mandoc_msg_setmin(MANDOCERR_BASE);
1.76 schwarze 1060: } else if (0 == strcmp(arg, "tree"))
1.22 schwarze 1061: curp->outtype = OUTT_TREE;
1.78 schwarze 1062: else if (0 == strcmp(arg, "man"))
1063: curp->outtype = OUTT_MAN;
1.17 schwarze 1064: else if (0 == strcmp(arg, "html"))
1.22 schwarze 1065: curp->outtype = OUTT_HTML;
1.188 schwarze 1066: else if (0 == strcmp(arg, "markdown"))
1067: curp->outtype = OUTT_MARKDOWN;
1.77 schwarze 1068: else if (0 == strcmp(arg, "utf8"))
1069: curp->outtype = OUTT_UTF8;
1070: else if (0 == strcmp(arg, "locale"))
1071: curp->outtype = OUTT_LOCALE;
1.36 schwarze 1072: else if (0 == strcmp(arg, "ps"))
1073: curp->outtype = OUTT_PS;
1.43 schwarze 1074: else if (0 == strcmp(arg, "pdf"))
1075: curp->outtype = OUTT_PDF;
1.1 kristaps 1076: else {
1.152 schwarze 1077: warnx("-T %s: Bad argument", arg);
1.150 schwarze 1078: return 0;
1.1 kristaps 1079: }
1080:
1.150 schwarze 1081: return 1;
1.1 kristaps 1082: }
1083:
1084: static int
1.45 schwarze 1085: woptions(struct curparse *curp, char *arg)
1.1 kristaps 1086: {
1.10 schwarze 1087: char *v, *o;
1.196 schwarze 1088: const char *toks[11];
1.1 kristaps 1089:
1.45 schwarze 1090: toks[0] = "stop";
1091: toks[1] = "all";
1.196 schwarze 1092: toks[2] = "base";
1093: toks[3] = "style";
1094: toks[4] = "warning";
1095: toks[5] = "error";
1096: toks[6] = "unsupp";
1097: toks[7] = "fatal";
1098: toks[8] = "openbsd";
1099: toks[9] = "netbsd";
1100: toks[10] = NULL;
1.1 kristaps 1101:
1.10 schwarze 1102: while (*arg) {
1103: o = arg;
1.176 schwarze 1104: switch (getsubopt(&arg, (char * const *)toks, &v)) {
1.90 schwarze 1105: case 0:
1.45 schwarze 1106: curp->wstop = 1;
1.1 kristaps 1107: break;
1.90 schwarze 1108: case 1:
1109: case 2:
1.215 schwarze 1110: mandoc_msg_setmin(MANDOCERR_BASE);
1.193 schwarze 1111: break;
1112: case 3:
1.215 schwarze 1113: mandoc_msg_setmin(MANDOCERR_STYLE);
1.1 kristaps 1114: break;
1.193 schwarze 1115: case 4:
1.215 schwarze 1116: mandoc_msg_setmin(MANDOCERR_WARNING);
1.1 kristaps 1117: break;
1.193 schwarze 1118: case 5:
1.215 schwarze 1119: mandoc_msg_setmin(MANDOCERR_ERROR);
1.123 schwarze 1120: break;
1.193 schwarze 1121: case 6:
1.215 schwarze 1122: mandoc_msg_setmin(MANDOCERR_UNSUPP);
1.196 schwarze 1123: break;
1124: case 7:
1.215 schwarze 1125: mandoc_msg_setmin(MANDOCERR_MAX);
1.196 schwarze 1126: break;
1127: case 8:
1.215 schwarze 1128: mandoc_msg_setmin(MANDOCERR_BASE);
1.196 schwarze 1129: curp->os_e = MANDOC_OS_OPENBSD;
1130: break;
1131: case 9:
1.215 schwarze 1132: mandoc_msg_setmin(MANDOCERR_BASE);
1.196 schwarze 1133: curp->os_e = MANDOC_OS_NETBSD;
1.19 schwarze 1134: break;
1.1 kristaps 1135: default:
1.152 schwarze 1136: warnx("-W %s: Bad argument", o);
1.150 schwarze 1137: return 0;
1.1 kristaps 1138: }
1.10 schwarze 1139: }
1.150 schwarze 1140: return 1;
1.95 schwarze 1141: }
1142:
1.130 schwarze 1143: static pid_t
1.149 schwarze 1144: spawn_pager(struct tag_files *tag_files)
1.95 schwarze 1145: {
1.172 schwarze 1146: const struct timespec timeout = { 0, 100000000 }; /* 0.1s */
1.95 schwarze 1147: #define MAX_PAGER_ARGS 16
1148: char *argv[MAX_PAGER_ARGS];
1149: const char *pager;
1150: char *cp;
1.144 schwarze 1151: size_t cmdlen;
1.212 schwarze 1152: int argc, use_ofn;
1.130 schwarze 1153: pid_t pager_pid;
1.95 schwarze 1154:
1.144 schwarze 1155: pager = getenv("MANPAGER");
1156: if (pager == NULL || *pager == '\0')
1157: pager = getenv("PAGER");
1158: if (pager == NULL || *pager == '\0')
1159: pager = "more -s";
1160: cp = mandoc_strdup(pager);
1161:
1162: /*
1163: * Parse the pager command into words.
1164: * Intentionally do not do anything fancy here.
1165: */
1166:
1167: argc = 0;
1.212 schwarze 1168: while (argc + 5 < MAX_PAGER_ARGS) {
1.144 schwarze 1169: argv[argc++] = cp;
1170: cp = strchr(cp, ' ');
1171: if (cp == NULL)
1172: break;
1173: *cp++ = '\0';
1174: while (*cp == ' ')
1175: cp++;
1176: if (*cp == '\0')
1177: break;
1178: }
1179:
1.149 schwarze 1180: /* For more(1) and less(1), use the tag file. */
1.144 schwarze 1181:
1.212 schwarze 1182: use_ofn = 1;
1.149 schwarze 1183: if ((cmdlen = strlen(argv[0])) >= 4) {
1.144 schwarze 1184: cp = argv[0] + cmdlen - 4;
1.149 schwarze 1185: if (strcmp(cp, "less") == 0 || strcmp(cp, "more") == 0) {
1186: argv[argc++] = mandoc_strdup("-T");
1187: argv[argc++] = tag_files->tfn;
1.212 schwarze 1188: if (tag_files->tagname != NULL) {
1189: argv[argc++] = mandoc_strdup("-t");
1190: argv[argc++] = tag_files->tagname;
1191: use_ofn = 0;
1192: }
1.149 schwarze 1193: }
1.144 schwarze 1194: }
1.212 schwarze 1195: if (use_ofn)
1196: argv[argc++] = tag_files->ofn;
1.144 schwarze 1197: argv[argc] = NULL;
1198:
1.130 schwarze 1199: switch (pager_pid = fork()) {
1.95 schwarze 1200: case -1:
1.152 schwarze 1201: err((int)MANDOCLEVEL_SYSERR, "fork");
1.95 schwarze 1202: case 0:
1.129 schwarze 1203: break;
1204: default:
1.165 schwarze 1205: (void)setpgid(pager_pid, 0);
1.182 schwarze 1206: (void)tcsetpgrp(tag_files->ofd, pager_pid);
1.165 schwarze 1207: if (pledge("stdio rpath tmppath tty proc", NULL) == -1)
1.163 schwarze 1208: err((int)MANDOCLEVEL_SYSERR, "pledge");
1.166 schwarze 1209: tag_files->pager_pid = pager_pid;
1.150 schwarze 1210: return pager_pid;
1.95 schwarze 1211: }
1212:
1.129 schwarze 1213: /* The child process becomes the pager. */
1.95 schwarze 1214:
1.152 schwarze 1215: if (dup2(tag_files->ofd, STDOUT_FILENO) == -1)
1216: err((int)MANDOCLEVEL_SYSERR, "pager stdout");
1.149 schwarze 1217: close(tag_files->ofd);
1.206 tb 1218: assert(tag_files->tfd == -1);
1.172 schwarze 1219:
1220: /* Do not start the pager before controlling the terminal. */
1221:
1.182 schwarze 1222: while (tcgetpgrp(STDOUT_FILENO) != getpid())
1.172 schwarze 1223: nanosleep(&timeout, NULL);
1224:
1.95 schwarze 1225: execvp(argv[0], argv);
1.152 schwarze 1226: err((int)MANDOCLEVEL_SYSERR, "exec %s", argv[0]);
1.30 schwarze 1227: }