Annotation of src/usr.bin/mandoc/main.c, Revision 1.208
1.208 ! schwarze 1: /* $OpenBSD: main.c,v 1.207 2018/04/13 19:55:13 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"
1.144 schwarze 46: #include "tag.h"
1.136 schwarze 47: #include "main.h"
1.134 schwarze 48: #include "manconf.h"
1.95 schwarze 49: #include "mansearch.h"
50:
51: enum outmode {
52: OUTMODE_DEF = 0,
53: OUTMODE_FLN,
54: OUTMODE_LST,
55: OUTMODE_ALL,
56: OUTMODE_ONE
57: };
1.1 kristaps 58:
59: enum outt {
1.76 schwarze 60: OUTT_ASCII = 0, /* -Tascii */
1.77 schwarze 61: OUTT_LOCALE, /* -Tlocale */
62: OUTT_UTF8, /* -Tutf8 */
1.76 schwarze 63: OUTT_TREE, /* -Ttree */
1.78 schwarze 64: OUTT_MAN, /* -Tman */
1.76 schwarze 65: OUTT_HTML, /* -Thtml */
1.188 schwarze 66: OUTT_MARKDOWN, /* -Tmarkdown */
1.76 schwarze 67: OUTT_LINT, /* -Tlint */
68: OUTT_PS, /* -Tps */
69: OUTT_PDF /* -Tpdf */
1.1 kristaps 70: };
71:
72: struct curparse {
1.76 schwarze 73: struct mparse *mp;
1.196 schwarze 74: struct manoutput *outopts; /* output options */
75: void *outdata; /* data for output */
76: char *os_s; /* operating system for display */
1.75 schwarze 77: int wstop; /* stop after a file with a warning */
1.196 schwarze 78: enum mandocerr mmin; /* ignore messages below this */
79: enum mandoc_os os_e; /* check base system conventions */
1.90 schwarze 80: enum outt outtype; /* which output to use */
1.33 schwarze 81: };
1.174 schwarze 82:
83:
84: int mandocdb(int, char *[]);
1.33 schwarze 85:
1.197 schwarze 86: static void check_xr(const char *);
1.119 schwarze 87: static int fs_lookup(const struct manpaths *,
88: size_t ipath, const char *,
89: const char *, const char *,
90: struct manpage **, size_t *);
1.198 schwarze 91: static int fs_search(const struct mansearch *,
1.119 schwarze 92: const struct manpaths *, int, char**,
93: struct manpage **, size_t *);
1.103 schwarze 94: static int koptions(int *, char *);
1.189 schwarze 95: static void moptions(int *, char *);
1.76 schwarze 96: static void mmsg(enum mandocerr, enum mandoclevel,
97: const char *, int, int, const char *);
1.179 schwarze 98: static void outdata_alloc(struct curparse *);
1.132 schwarze 99: static void parse(struct curparse *, int, const char *);
100: static void passthrough(const char *, int, int);
1.149 schwarze 101: static pid_t spawn_pager(struct tag_files *);
1.27 schwarze 102: static int toptions(struct curparse *, char *);
1.184 schwarze 103: static void usage(enum argmode) __attribute__((__noreturn__));
1.45 schwarze 104: static int woptions(struct curparse *, char *);
1.1 kristaps 105:
1.95 schwarze 106: static const int sec_prios[] = {1, 4, 5, 8, 6, 3, 7, 2, 9};
1.110 schwarze 107: static char help_arg[] = "help";
108: static char *help_argv[] = {help_arg, NULL};
1.131 schwarze 109: static enum mandoclevel rc;
1.203 schwarze 110: static FILE *mmsg_stream;
1.1 kristaps 111:
1.90 schwarze 112:
1.1 kristaps 113: int
114: main(int argc, char *argv[])
115: {
1.134 schwarze 116: struct manconf conf;
1.186 schwarze 117: struct mansearch search;
1.1 kristaps 118: struct curparse curp;
1.207 schwarze 119: struct winsize ws;
1.149 schwarze 120: struct tag_files *tag_files;
1.186 schwarze 121: struct manpage *res, *resp;
122: const char *progname, *sec, *thisarg;
123: char *conf_file, *defpaths, *auxpaths;
1.196 schwarze 124: char *oarg;
1.113 schwarze 125: unsigned char *uc;
1.171 schwarze 126: size_t i, sz;
1.135 schwarze 127: int prio, best_prio;
1.95 schwarze 128: enum outmode outmode;
1.208 ! schwarze 129: int fd, startdir;
1.95 schwarze 130: int show_usage;
1.87 schwarze 131: int options;
1.149 schwarze 132: int use_pager;
1.166 schwarze 133: int status, signum;
1.95 schwarze 134: int c;
1.166 schwarze 135: pid_t pager_pid, tc_pgid, man_pgid, pid;
1.1 kristaps 136:
1.162 schwarze 137: progname = getprogname();
138: if (strncmp(progname, "mandocdb", 8) == 0 ||
139: strncmp(progname, "makewhatis", 10) == 0)
1.150 schwarze 140: return mandocdb(argc, argv);
1.19 schwarze 141:
1.187 schwarze 142: if (pledge("stdio rpath tmppath tty proc exec", NULL) == -1)
1.163 schwarze 143: err((int)MANDOCLEVEL_SYSERR, "pledge");
1.154 schwarze 144:
1.95 schwarze 145: /* Search options. */
146:
1.134 schwarze 147: memset(&conf, 0, sizeof(conf));
1.111 schwarze 148: conf_file = defpaths = NULL;
149: auxpaths = NULL;
1.95 schwarze 150:
151: memset(&search, 0, sizeof(struct mansearch));
152: search.outkey = "Nd";
1.186 schwarze 153: oarg = NULL;
1.95 schwarze 154:
1.162 schwarze 155: if (strcmp(progname, "man") == 0)
1.95 schwarze 156: search.argmode = ARG_NAME;
1.162 schwarze 157: else if (strncmp(progname, "apropos", 7) == 0)
1.95 schwarze 158: search.argmode = ARG_EXPR;
1.162 schwarze 159: else if (strncmp(progname, "whatis", 6) == 0)
1.95 schwarze 160: search.argmode = ARG_WORD;
1.162 schwarze 161: else if (strncmp(progname, "help", 4) == 0)
1.110 schwarze 162: search.argmode = ARG_NAME;
1.95 schwarze 163: else
164: search.argmode = ARG_FILE;
165:
166: /* Parser and formatter options. */
167:
1.19 schwarze 168: memset(&curp, 0, sizeof(struct curparse));
1.109 schwarze 169: curp.outtype = OUTT_LOCALE;
1.196 schwarze 170: curp.mmin = MANDOCERR_MAX;
1.135 schwarze 171: curp.outopts = &conf.output;
1.103 schwarze 172: options = MPARSE_SO | MPARSE_UTF8 | MPARSE_LATIN1;
1.203 schwarze 173: mmsg_stream = stderr;
1.1 kristaps 174:
1.149 schwarze 175: use_pager = 1;
176: tag_files = NULL;
1.95 schwarze 177: show_usage = 0;
178: outmode = OUTMODE_DEF;
179:
1.192 schwarze 180: while ((c = getopt(argc, argv,
181: "aC:cfhI:iK:klM:m:O:S:s:T:VW:w")) != -1) {
182: if (c == 'i' && search.argmode == ARG_EXPR) {
183: optind--;
184: break;
185: }
1.1 kristaps 186: switch (c) {
1.95 schwarze 187: case 'a':
188: outmode = OUTMODE_ALL;
189: break;
190: case 'C':
191: conf_file = optarg;
192: break;
193: case 'c':
1.149 schwarze 194: use_pager = 0;
1.95 schwarze 195: break;
196: case 'f':
197: search.argmode = ARG_WORD;
198: break;
1.98 schwarze 199: case 'h':
1.135 schwarze 200: conf.output.synopsisonly = 1;
1.149 schwarze 201: use_pager = 0;
1.98 schwarze 202: outmode = OUTMODE_ALL;
203: break;
1.90 schwarze 204: case 'I':
1.83 schwarze 205: if (strncmp(optarg, "os=", 3)) {
1.152 schwarze 206: warnx("-I %s: Bad argument", optarg);
1.150 schwarze 207: return (int)MANDOCLEVEL_BADARG;
1.83 schwarze 208: }
1.196 schwarze 209: if (curp.os_s != NULL) {
1.152 schwarze 210: warnx("-I %s: Duplicate argument", optarg);
1.150 schwarze 211: return (int)MANDOCLEVEL_BADARG;
1.83 schwarze 212: }
1.196 schwarze 213: curp.os_s = mandoc_strdup(optarg + 3);
1.95 schwarze 214: break;
1.103 schwarze 215: case 'K':
216: if ( ! koptions(&options, optarg))
1.150 schwarze 217: return (int)MANDOCLEVEL_BADARG;
1.103 schwarze 218: break;
1.95 schwarze 219: case 'k':
220: search.argmode = ARG_EXPR;
221: break;
1.96 schwarze 222: case 'l':
223: search.argmode = ARG_FILE;
224: outmode = OUTMODE_ALL;
225: break;
1.95 schwarze 226: case 'M':
227: defpaths = optarg;
228: break;
1.90 schwarze 229: case 'm':
1.95 schwarze 230: auxpaths = optarg;
1.1 kristaps 231: break;
1.90 schwarze 232: case 'O':
1.186 schwarze 233: oarg = optarg;
1.17 schwarze 234: break;
1.95 schwarze 235: case 'S':
236: search.arch = optarg;
237: break;
238: case 's':
239: search.sec = optarg;
240: break;
1.90 schwarze 241: case 'T':
1.22 schwarze 242: if ( ! toptions(&curp, optarg))
1.150 schwarze 243: return (int)MANDOCLEVEL_BADARG;
1.1 kristaps 244: break;
1.90 schwarze 245: case 'W':
1.45 schwarze 246: if ( ! woptions(&curp, optarg))
1.150 schwarze 247: return (int)MANDOCLEVEL_BADARG;
1.1 kristaps 248: break;
1.95 schwarze 249: case 'w':
250: outmode = OUTMODE_FLN;
251: break;
1.1 kristaps 252: default:
1.95 schwarze 253: show_usage = 1;
254: break;
255: }
256: }
257:
258: if (show_usage)
259: usage(search.argmode);
260:
261: /* Postprocess options. */
262:
263: if (outmode == OUTMODE_DEF) {
264: switch (search.argmode) {
265: case ARG_FILE:
266: outmode = OUTMODE_ALL;
1.149 schwarze 267: use_pager = 0;
1.95 schwarze 268: break;
269: case ARG_NAME:
270: outmode = OUTMODE_ONE;
271: break;
272: default:
273: outmode = OUTMODE_LST;
274: break;
1.186 schwarze 275: }
276: }
277:
278: if (oarg != NULL) {
279: if (outmode == OUTMODE_LST)
280: search.outkey = oarg;
281: else {
282: while (oarg != NULL) {
283: thisarg = oarg;
284: if (manconf_output(&conf.output,
285: strsep(&oarg, ","), 0) == 0)
286: continue;
287: warnx("-O %s: Bad argument", thisarg);
288: return (int)MANDOCLEVEL_BADARG;
289: }
1.95 schwarze 290: }
291: }
292:
1.151 schwarze 293: if (outmode == OUTMODE_FLN ||
294: outmode == OUTMODE_LST ||
295: !isatty(STDOUT_FILENO))
296: use_pager = 0;
1.207 schwarze 297:
298: if (use_pager &&
299: (conf.output.width == 0 || conf.output.indent == 0) &&
300: ioctl(STDOUT_FILENO, TIOCGWINSZ, &ws) != -1) {
301: if (conf.output.width == 0 && ws.ws_col < 79)
302: conf.output.width = ws.ws_col - 1;
303: if (conf.output.indent == 0 && ws.ws_col < 66)
304: conf.output.indent = 3;
305: }
1.151 schwarze 306:
1.167 schwarze 307: if (!use_pager)
1.187 schwarze 308: if (pledge("stdio rpath", NULL) == -1)
1.167 schwarze 309: err((int)MANDOCLEVEL_SYSERR, "pledge");
1.154 schwarze 310:
1.95 schwarze 311: /* Parse arguments. */
312:
1.124 schwarze 313: if (argc > 0) {
314: argc -= optind;
315: argv += optind;
316: }
1.95 schwarze 317: resp = NULL;
318:
1.110 schwarze 319: /*
320: * Quirks for help(1)
321: * and for a man(1) section argument without -s.
322: */
323:
324: if (search.argmode == ARG_NAME) {
1.162 schwarze 325: if (*progname == 'h') {
1.110 schwarze 326: if (argc == 0) {
327: argv = help_argv;
328: argc = 1;
329: }
1.117 schwarze 330: } else if (argc > 1 &&
1.128 schwarze 331: ((uc = (unsigned char *)argv[0]) != NULL) &&
1.113 schwarze 332: ((isdigit(uc[0]) && (uc[1] == '\0' ||
333: (isalpha(uc[1]) && uc[2] == '\0'))) ||
334: (uc[0] == 'n' && uc[1] == '\0'))) {
1.128 schwarze 335: search.sec = (char *)uc;
1.110 schwarze 336: argv++;
337: argc--;
338: }
1.122 schwarze 339: if (search.arch == NULL)
340: search.arch = getenv("MACHINE");
341: if (search.arch == NULL)
342: search.arch = MACHINE;
1.95 schwarze 343: }
344:
345: rc = MANDOCLEVEL_OK;
346:
347: /* man(1), whatis(1), apropos(1) */
348:
349: if (search.argmode != ARG_FILE) {
1.107 schwarze 350: if (search.argmode == ARG_NAME &&
351: outmode == OUTMODE_ONE)
352: search.firstmatch = 1;
1.95 schwarze 353:
354: /* Access the mandoc database. */
355:
1.134 schwarze 356: manconf_parse(&conf, conf_file, defpaths, auxpaths);
357: if ( ! mansearch(&search, &conf.manpath,
358: argc, argv, &res, &sz))
1.95 schwarze 359: usage(search.argmode);
1.119 schwarze 360:
1.208 ! schwarze 361: if (sz == 0 && search.argmode == ARG_NAME)
! 362: fs_search(&search, &conf.manpath,
! 363: argc, argv, &res, &sz);
! 364:
! 365: if (search.argmode == ARG_NAME) {
! 366: for (c = 0; c < argc; c++) {
! 367: if (strchr(argv[c], '/') == NULL)
! 368: continue;
! 369: if (access(argv[c], R_OK) == -1) {
! 370: warn("%s", argv[c]);
! 371: continue;
! 372: }
! 373: res = mandoc_reallocarray(res,
! 374: sz + 1, sizeof(*res));
! 375: res[sz].file = mandoc_strdup(argv[c]);
! 376: res[sz].names = NULL;
! 377: res[sz].output = NULL;
! 378: res[sz].ipath = SIZE_MAX;
! 379: res[sz].bits = 0;
! 380: res[sz].sec = 10;
! 381: res[sz].form = FORM_SRC;
! 382: sz++;
! 383: }
1.142 schwarze 384: }
1.95 schwarze 385:
386: if (sz == 0) {
1.208 ! schwarze 387: if (search.argmode != ARG_NAME)
! 388: warnx("nothing appropriate");
1.95 schwarze 389: rc = MANDOCLEVEL_BADARG;
390: goto out;
391: }
392:
393: /*
394: * For standard man(1) and -a output mode,
395: * prepare for copying filename pointers
396: * into the program parameter array.
397: */
398:
399: if (outmode == OUTMODE_ONE) {
400: argc = 1;
1.171 schwarze 401: best_prio = 20;
1.95 schwarze 402: } else if (outmode == OUTMODE_ALL)
403: argc = (int)sz;
404:
405: /* Iterate all matching manuals. */
406:
1.119 schwarze 407: resp = res;
1.95 schwarze 408: for (i = 0; i < sz; i++) {
409: if (outmode == OUTMODE_FLN)
410: puts(res[i].file);
411: else if (outmode == OUTMODE_LST)
412: printf("%s - %s\n", res[i].names,
413: res[i].output == NULL ? "" :
414: res[i].output);
415: else if (outmode == OUTMODE_ONE) {
416: /* Search for the best section. */
1.171 schwarze 417: sec = res[i].file;
418: sec += strcspn(sec, "123456789");
419: if (sec[0] == '\0')
1.95 schwarze 420: continue;
1.171 schwarze 421: prio = sec_prios[sec[0] - '1'];
422: if (sec[1] != '/')
423: prio += 10;
1.95 schwarze 424: if (prio >= best_prio)
425: continue;
426: best_prio = prio;
427: resp = res + i;
428: }
1.1 kristaps 429: }
430:
1.95 schwarze 431: /*
432: * For man(1), -a and -i output mode, fall through
433: * to the main mandoc(1) code iterating files
434: * and running the parsers on each of them.
435: */
436:
437: if (outmode == OUTMODE_FLN || outmode == OUTMODE_LST)
438: goto out;
439: }
440:
441: /* mandoc(1) */
1.157 schwarze 442:
1.167 schwarze 443: if (use_pager) {
444: if (pledge("stdio rpath tmppath tty proc exec", NULL) == -1)
445: err((int)MANDOCLEVEL_SYSERR, "pledge");
446: } else {
447: if (pledge("stdio rpath", NULL) == -1)
448: err((int)MANDOCLEVEL_SYSERR, "pledge");
449: }
1.95 schwarze 450:
1.189 schwarze 451: if (search.argmode == ARG_FILE)
452: moptions(&options, auxpaths);
1.146 schwarze 453:
1.155 schwarze 454: mchars_alloc();
1.196 schwarze 455: curp.mp = mparse_alloc(options, curp.mmin, mmsg,
456: curp.os_e, curp.os_s);
1.76 schwarze 457:
1.80 schwarze 458: /*
459: * Conditionally start up the lookaside buffer before parsing.
460: */
461: if (OUTT_MAN == curp.outtype)
462: mparse_keep(curp.mp);
463:
1.124 schwarze 464: if (argc < 1) {
1.149 schwarze 465: if (use_pager)
466: tag_files = tag_init();
1.132 schwarze 467: parse(&curp, STDIN_FILENO, "<stdin>");
1.118 schwarze 468: }
1.27 schwarze 469:
1.208 ! schwarze 470: /*
! 471: * Remember the original working directory, if possible.
! 472: * This will be needed if some names on the command line
! 473: * are page names and some are relative file names.
! 474: * Do not error out if the current directory is not
! 475: * readable: Maybe it won't be needed after all.
! 476: */
! 477: startdir = open(".", O_RDONLY | O_DIRECTORY);
! 478:
1.124 schwarze 479: while (argc > 0) {
1.208 ! schwarze 480:
! 481: /*
! 482: * Changing directories is not needed in ARG_FILE mode.
! 483: * Do it on a best-effort basis. Even in case of
! 484: * failure, some functionality may still work.
! 485: */
! 486: if (resp != NULL) {
! 487: if (resp->ipath != SIZE_MAX)
! 488: (void)chdir(conf.manpath.paths[resp->ipath]);
! 489: else if (startdir != -1)
! 490: (void)fchdir(startdir);
! 491: }
! 492:
1.169 schwarze 493: fd = mparse_open(curp.mp, resp != NULL ? resp->file : *argv);
1.118 schwarze 494: if (fd != -1) {
1.149 schwarze 495: if (use_pager) {
496: tag_files = tag_init();
497: use_pager = 0;
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->bits = NAME_FILE & NAME_MASK;
728: page->sec = (*sec >= '1' && *sec <= '9') ? *sec - '1' + 1 : 10;
729: page->form = form;
1.150 schwarze 730: return 1;
1.119 schwarze 731: }
732:
1.198 schwarze 733: static int
1.119 schwarze 734: fs_search(const struct mansearch *cfg, const struct manpaths *paths,
735: int argc, char **argv, struct manpage **res, size_t *ressz)
736: {
737: const char *const sections[] =
1.171 schwarze 738: {"1", "8", "6", "2", "3", "5", "7", "4", "9", "3p"};
1.119 schwarze 739: const size_t nsec = sizeof(sections)/sizeof(sections[0]);
740:
741: size_t ipath, isec, lastsz;
742:
743: assert(cfg->argmode == ARG_NAME);
744:
1.198 schwarze 745: if (res != NULL)
746: *res = NULL;
1.119 schwarze 747: *ressz = lastsz = 0;
748: while (argc) {
749: for (ipath = 0; ipath < paths->sz; ipath++) {
750: if (cfg->sec != NULL) {
751: if (fs_lookup(paths, ipath, cfg->sec,
752: cfg->arch, *argv, res, ressz) &&
753: cfg->firstmatch)
1.198 schwarze 754: return 1;
1.119 schwarze 755: } else for (isec = 0; isec < nsec; isec++)
756: if (fs_lookup(paths, ipath, sections[isec],
757: cfg->arch, *argv, res, ressz) &&
758: cfg->firstmatch)
1.198 schwarze 759: return 1;
1.119 schwarze 760: }
1.208 ! schwarze 761: if (res != NULL && *ressz == lastsz &&
! 762: strchr(*argv, '/') == NULL)
1.152 schwarze 763: warnx("No entry for %s in the manual.", *argv);
1.119 schwarze 764: lastsz = *ressz;
765: argv++;
766: argc--;
767: }
1.198 schwarze 768: return 0;
1.1 kristaps 769: }
770:
1.27 schwarze 771: static void
1.132 schwarze 772: parse(struct curparse *curp, int fd, const char *file)
1.52 schwarze 773: {
1.132 schwarze 774: enum mandoclevel rctmp;
1.139 schwarze 775: struct roff_man *man;
1.52 schwarze 776:
1.76 schwarze 777: /* Begin by parsing the file itself. */
1.52 schwarze 778:
1.76 schwarze 779: assert(file);
1.170 florian 780: assert(fd >= 0);
1.52 schwarze 781:
1.132 schwarze 782: rctmp = mparse_readfd(curp->mp, fd, file);
1.168 schwarze 783: if (fd != STDIN_FILENO)
784: close(fd);
1.132 schwarze 785: if (rc < rctmp)
786: rc = rctmp;
1.1 kristaps 787:
1.51 schwarze 788: /*
1.76 schwarze 789: * With -Wstop and warnings or errors of at least the requested
790: * level, do not produce output.
1.51 schwarze 791: */
792:
1.132 schwarze 793: if (rctmp != MANDOCLEVEL_OK && curp->wstop)
794: return;
1.51 schwarze 795:
1.179 schwarze 796: if (curp->outdata == NULL)
797: outdata_alloc(curp);
1.51 schwarze 798:
1.158 schwarze 799: mparse_result(curp->mp, &man, NULL);
800:
801: /* Execute the out device, if it exists. */
802:
803: if (man == NULL)
804: return;
1.200 schwarze 805: mandoc_xr_reset();
1.158 schwarze 806: if (man->macroset == MACROSET_MDOC) {
1.185 schwarze 807: if (curp->outtype != OUTT_TREE || !curp->outopts->noval)
808: mdoc_validate(man);
1.51 schwarze 809: switch (curp->outtype) {
1.90 schwarze 810: case OUTT_HTML:
1.158 schwarze 811: html_mdoc(curp->outdata, man);
1.51 schwarze 812: break;
1.90 schwarze 813: case OUTT_TREE:
1.158 schwarze 814: tree_mdoc(curp->outdata, man);
1.51 schwarze 815: break;
1.90 schwarze 816: case OUTT_MAN:
1.158 schwarze 817: man_mdoc(curp->outdata, man);
1.78 schwarze 818: break;
1.90 schwarze 819: case OUTT_PDF:
820: case OUTT_ASCII:
821: case OUTT_UTF8:
822: case OUTT_LOCALE:
823: case OUTT_PS:
1.158 schwarze 824: terminal_mdoc(curp->outdata, man);
825: break;
1.188 schwarze 826: case OUTT_MARKDOWN:
827: markdown_mdoc(curp->outdata, man);
828: break;
1.158 schwarze 829: default:
830: break;
831: }
832: }
833: if (man->macroset == MACROSET_MAN) {
1.185 schwarze 834: if (curp->outtype != OUTT_TREE || !curp->outopts->noval)
835: man_validate(man);
1.158 schwarze 836: switch (curp->outtype) {
837: case OUTT_HTML:
838: html_man(curp->outdata, man);
839: break;
840: case OUTT_TREE:
841: tree_man(curp->outdata, man);
842: break;
843: case OUTT_MAN:
844: man_man(curp->outdata, man);
845: break;
846: case OUTT_PDF:
847: case OUTT_ASCII:
848: case OUTT_UTF8:
849: case OUTT_LOCALE:
850: case OUTT_PS:
851: terminal_man(curp->outdata, man);
1.51 schwarze 852: break;
853: default:
854: break;
855: }
1.179 schwarze 856: }
1.200 schwarze 857: if (curp->mmin < MANDOCERR_STYLE)
858: check_xr(file);
1.181 schwarze 859: mparse_updaterc(curp->mp, &rc);
1.197 schwarze 860: }
861:
862: static void
863: check_xr(const char *file)
864: {
865: static struct manpaths paths;
866: struct mansearch search;
867: struct mandoc_xr *xr;
868: char *cp;
869: size_t sz;
870:
871: if (paths.sz == 0)
872: manpath_base(&paths);
873:
874: for (xr = mandoc_xr_get(); xr != NULL; xr = xr->next) {
1.200 schwarze 875: if (xr->line == -1)
876: continue;
1.197 schwarze 877: search.arch = NULL;
878: search.sec = xr->sec;
879: search.outkey = NULL;
880: search.argmode = ARG_NAME;
881: search.firstmatch = 1;
882: if (mansearch(&search, &paths, 1, &xr->name, NULL, &sz))
1.198 schwarze 883: continue;
884: if (fs_search(&search, &paths, 1, &xr->name, NULL, &sz))
1.197 schwarze 885: continue;
1.201 schwarze 886: if (xr->count == 1)
887: mandoc_asprintf(&cp, "Xr %s %s", xr->name, xr->sec);
888: else
889: mandoc_asprintf(&cp, "Xr %s %s (%d times)",
890: xr->name, xr->sec, xr->count);
1.197 schwarze 891: mmsg(MANDOCERR_XR_BAD, MANDOCLEVEL_STYLE,
892: file, xr->line, xr->pos + 1, cp);
893: free(cp);
894: }
1.179 schwarze 895: }
896:
897: static void
898: outdata_alloc(struct curparse *curp)
899: {
900: switch (curp->outtype) {
901: case OUTT_HTML:
902: curp->outdata = html_alloc(curp->outopts);
903: break;
904: case OUTT_UTF8:
905: curp->outdata = utf8_alloc(curp->outopts);
906: break;
907: case OUTT_LOCALE:
908: curp->outdata = locale_alloc(curp->outopts);
909: break;
910: case OUTT_ASCII:
911: curp->outdata = ascii_alloc(curp->outopts);
912: break;
913: case OUTT_PDF:
914: curp->outdata = pdf_alloc(curp->outopts);
915: break;
916: case OUTT_PS:
917: curp->outdata = ps_alloc(curp->outopts);
918: break;
919: default:
920: break;
1.51 schwarze 921: }
1.1 kristaps 922: }
923:
1.132 schwarze 924: static void
1.105 schwarze 925: passthrough(const char *file, int fd, int synopsis_only)
1.95 schwarze 926: {
1.105 schwarze 927: const char synb[] = "S\bSY\bYN\bNO\bOP\bPS\bSI\bIS\bS";
928: const char synr[] = "SYNOPSIS";
929:
930: FILE *stream;
1.95 schwarze 931: const char *syscall;
1.164 schwarze 932: char *line, *cp;
933: size_t linesz;
1.180 schwarze 934: ssize_t len, written;
1.105 schwarze 935: int print;
1.116 schwarze 936:
1.164 schwarze 937: line = NULL;
938: linesz = 0;
1.105 schwarze 939:
1.180 schwarze 940: if (fflush(stdout) == EOF) {
941: syscall = "fflush";
942: goto fail;
943: }
944:
1.105 schwarze 945: if ((stream = fdopen(fd, "r")) == NULL) {
946: close(fd);
947: syscall = "fdopen";
948: goto fail;
949: }
1.95 schwarze 950:
1.105 schwarze 951: print = 0;
1.180 schwarze 952: while ((len = getline(&line, &linesz, stream)) != -1) {
1.164 schwarze 953: cp = line;
1.105 schwarze 954: if (synopsis_only) {
955: if (print) {
1.164 schwarze 956: if ( ! isspace((unsigned char)*cp))
1.105 schwarze 957: goto done;
1.180 schwarze 958: while (isspace((unsigned char)*cp)) {
1.164 schwarze 959: cp++;
1.180 schwarze 960: len--;
961: }
1.105 schwarze 962: } else {
1.164 schwarze 963: if (strcmp(cp, synb) == 0 ||
964: strcmp(cp, synr) == 0)
1.105 schwarze 965: print = 1;
966: continue;
967: }
968: }
1.180 schwarze 969: for (; len > 0; len -= written) {
970: if ((written = write(STDOUT_FILENO, cp, len)) != -1)
971: continue;
1.164 schwarze 972: fclose(stream);
1.180 schwarze 973: syscall = "write";
1.164 schwarze 974: goto fail;
975: }
1.105 schwarze 976: }
1.95 schwarze 977:
1.105 schwarze 978: if (ferror(stream)) {
979: fclose(stream);
1.164 schwarze 980: syscall = "getline";
1.105 schwarze 981: goto fail;
982: }
1.101 schwarze 983:
1.105 schwarze 984: done:
1.164 schwarze 985: free(line);
1.105 schwarze 986: fclose(stream);
1.132 schwarze 987: return;
1.95 schwarze 988:
989: fail:
1.164 schwarze 990: free(line);
1.152 schwarze 991: warn("%s: SYSERR: %s", file, syscall);
1.132 schwarze 992: if (rc < MANDOCLEVEL_SYSERR)
993: rc = MANDOCLEVEL_SYSERR;
1.103 schwarze 994: }
995:
996: static int
997: koptions(int *options, char *arg)
998: {
999:
1000: if ( ! strcmp(arg, "utf-8")) {
1001: *options |= MPARSE_UTF8;
1002: *options &= ~MPARSE_LATIN1;
1003: } else if ( ! strcmp(arg, "iso-8859-1")) {
1004: *options |= MPARSE_LATIN1;
1005: *options &= ~MPARSE_UTF8;
1006: } else if ( ! strcmp(arg, "us-ascii")) {
1007: *options &= ~(MPARSE_UTF8 | MPARSE_LATIN1);
1008: } else {
1.152 schwarze 1009: warnx("-K %s: Bad argument", arg);
1.150 schwarze 1010: return 0;
1.103 schwarze 1011: }
1.150 schwarze 1012: return 1;
1.95 schwarze 1013: }
1014:
1.189 schwarze 1015: static void
1.87 schwarze 1016: moptions(int *options, char *arg)
1.1 kristaps 1017: {
1018:
1.95 schwarze 1019: if (arg == NULL)
1.189 schwarze 1020: return;
1021: if (strcmp(arg, "doc") == 0)
1.87 schwarze 1022: *options |= MPARSE_MDOC;
1.189 schwarze 1023: else if (strcmp(arg, "an") == 0)
1.87 schwarze 1024: *options |= MPARSE_MAN;
1.1 kristaps 1025: }
1026:
1027: static int
1.22 schwarze 1028: toptions(struct curparse *curp, char *arg)
1.1 kristaps 1029: {
1030:
1031: if (0 == strcmp(arg, "ascii"))
1.22 schwarze 1032: curp->outtype = OUTT_ASCII;
1033: else if (0 == strcmp(arg, "lint")) {
1034: curp->outtype = OUTT_LINT;
1.196 schwarze 1035: curp->mmin = MANDOCERR_BASE;
1.203 schwarze 1036: mmsg_stream = stdout;
1.76 schwarze 1037: } else if (0 == strcmp(arg, "tree"))
1.22 schwarze 1038: curp->outtype = OUTT_TREE;
1.78 schwarze 1039: else if (0 == strcmp(arg, "man"))
1040: curp->outtype = OUTT_MAN;
1.17 schwarze 1041: else if (0 == strcmp(arg, "html"))
1.22 schwarze 1042: curp->outtype = OUTT_HTML;
1.188 schwarze 1043: else if (0 == strcmp(arg, "markdown"))
1044: curp->outtype = OUTT_MARKDOWN;
1.77 schwarze 1045: else if (0 == strcmp(arg, "utf8"))
1046: curp->outtype = OUTT_UTF8;
1047: else if (0 == strcmp(arg, "locale"))
1048: curp->outtype = OUTT_LOCALE;
1.36 schwarze 1049: else if (0 == strcmp(arg, "ps"))
1050: curp->outtype = OUTT_PS;
1.43 schwarze 1051: else if (0 == strcmp(arg, "pdf"))
1052: curp->outtype = OUTT_PDF;
1.1 kristaps 1053: else {
1.152 schwarze 1054: warnx("-T %s: Bad argument", arg);
1.150 schwarze 1055: return 0;
1.1 kristaps 1056: }
1057:
1.150 schwarze 1058: return 1;
1.1 kristaps 1059: }
1060:
1061: static int
1.45 schwarze 1062: woptions(struct curparse *curp, char *arg)
1.1 kristaps 1063: {
1.10 schwarze 1064: char *v, *o;
1.196 schwarze 1065: const char *toks[11];
1.1 kristaps 1066:
1.45 schwarze 1067: toks[0] = "stop";
1068: toks[1] = "all";
1.196 schwarze 1069: toks[2] = "base";
1070: toks[3] = "style";
1071: toks[4] = "warning";
1072: toks[5] = "error";
1073: toks[6] = "unsupp";
1074: toks[7] = "fatal";
1075: toks[8] = "openbsd";
1076: toks[9] = "netbsd";
1077: toks[10] = NULL;
1.1 kristaps 1078:
1.10 schwarze 1079: while (*arg) {
1080: o = arg;
1.176 schwarze 1081: switch (getsubopt(&arg, (char * const *)toks, &v)) {
1.90 schwarze 1082: case 0:
1.45 schwarze 1083: curp->wstop = 1;
1.1 kristaps 1084: break;
1.90 schwarze 1085: case 1:
1086: case 2:
1.196 schwarze 1087: curp->mmin = MANDOCERR_BASE;
1.193 schwarze 1088: break;
1089: case 3:
1.196 schwarze 1090: curp->mmin = MANDOCERR_STYLE;
1.1 kristaps 1091: break;
1.193 schwarze 1092: case 4:
1.196 schwarze 1093: curp->mmin = MANDOCERR_WARNING;
1.1 kristaps 1094: break;
1.193 schwarze 1095: case 5:
1.196 schwarze 1096: curp->mmin = MANDOCERR_ERROR;
1.123 schwarze 1097: break;
1.193 schwarze 1098: case 6:
1.196 schwarze 1099: curp->mmin = MANDOCERR_UNSUPP;
1100: break;
1101: case 7:
1102: curp->mmin = MANDOCERR_MAX;
1103: break;
1104: case 8:
1105: curp->mmin = MANDOCERR_BASE;
1106: curp->os_e = MANDOC_OS_OPENBSD;
1107: break;
1108: case 9:
1109: curp->mmin = MANDOCERR_BASE;
1110: curp->os_e = MANDOC_OS_NETBSD;
1.19 schwarze 1111: break;
1.1 kristaps 1112: default:
1.152 schwarze 1113: warnx("-W %s: Bad argument", o);
1.150 schwarze 1114: return 0;
1.1 kristaps 1115: }
1.10 schwarze 1116: }
1.150 schwarze 1117: return 1;
1.1 kristaps 1118: }
1119:
1.75 schwarze 1120: static void
1.90 schwarze 1121: mmsg(enum mandocerr t, enum mandoclevel lvl,
1.76 schwarze 1122: const char *file, int line, int col, const char *msg)
1.30 schwarze 1123: {
1.94 schwarze 1124: const char *mparse_msg;
1.45 schwarze 1125:
1.203 schwarze 1126: fprintf(mmsg_stream, "%s: %s:", getprogname(),
1.178 schwarze 1127: file == NULL ? "<stdin>" : file);
1.92 schwarze 1128:
1129: if (line)
1.203 schwarze 1130: fprintf(mmsg_stream, "%d:%d:", line, col + 1);
1.92 schwarze 1131:
1.203 schwarze 1132: fprintf(mmsg_stream, " %s", mparse_strlevel(lvl));
1.94 schwarze 1133:
1.196 schwarze 1134: if ((mparse_msg = mparse_strerror(t)) != NULL)
1.203 schwarze 1135: fprintf(mmsg_stream, ": %s", mparse_msg);
1.30 schwarze 1136:
1137: if (msg)
1.203 schwarze 1138: fprintf(mmsg_stream, ": %s", msg);
1.76 schwarze 1139:
1.203 schwarze 1140: fputc('\n', mmsg_stream);
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;
1.95 schwarze 1152: int argc;
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;
1168: while (argc + 4 < MAX_PAGER_ARGS) {
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:
1.149 schwarze 1182: if ((cmdlen = strlen(argv[0])) >= 4) {
1.144 schwarze 1183: cp = argv[0] + cmdlen - 4;
1.149 schwarze 1184: if (strcmp(cp, "less") == 0 || strcmp(cp, "more") == 0) {
1185: argv[argc++] = mandoc_strdup("-T");
1186: argv[argc++] = tag_files->tfn;
1187: }
1.144 schwarze 1188: }
1.149 schwarze 1189: argv[argc++] = tag_files->ofn;
1.144 schwarze 1190: argv[argc] = NULL;
1191:
1.130 schwarze 1192: switch (pager_pid = fork()) {
1.95 schwarze 1193: case -1:
1.152 schwarze 1194: err((int)MANDOCLEVEL_SYSERR, "fork");
1.95 schwarze 1195: case 0:
1.129 schwarze 1196: break;
1197: default:
1.165 schwarze 1198: (void)setpgid(pager_pid, 0);
1.182 schwarze 1199: (void)tcsetpgrp(tag_files->ofd, pager_pid);
1.165 schwarze 1200: if (pledge("stdio rpath tmppath tty proc", NULL) == -1)
1.163 schwarze 1201: err((int)MANDOCLEVEL_SYSERR, "pledge");
1.166 schwarze 1202: tag_files->pager_pid = pager_pid;
1.150 schwarze 1203: return pager_pid;
1.95 schwarze 1204: }
1205:
1.129 schwarze 1206: /* The child process becomes the pager. */
1.95 schwarze 1207:
1.152 schwarze 1208: if (dup2(tag_files->ofd, STDOUT_FILENO) == -1)
1209: err((int)MANDOCLEVEL_SYSERR, "pager stdout");
1.149 schwarze 1210: close(tag_files->ofd);
1.206 tb 1211: assert(tag_files->tfd == -1);
1.172 schwarze 1212:
1213: /* Do not start the pager before controlling the terminal. */
1214:
1.182 schwarze 1215: while (tcgetpgrp(STDOUT_FILENO) != getpid())
1.172 schwarze 1216: nanosleep(&timeout, NULL);
1217:
1.95 schwarze 1218: execvp(argv[0], argv);
1.152 schwarze 1219: err((int)MANDOCLEVEL_SYSERR, "exec %s", argv[0]);
1.30 schwarze 1220: }
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