Annotation of src/usr.bin/mandoc/main.c, Revision 1.225
1.225 ! schwarze 1: /* $OpenBSD: main.c,v 1.224 2019/03/04 18:14:27 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 */
1.129 schwarze 23: #include <sys/wait.h>
1.95 schwarze 24:
1.1 kristaps 25: #include <assert.h>
1.95 schwarze 26: #include <ctype.h>
1.152 schwarze 27: #include <err.h>
1.165 schwarze 28: #include <errno.h>
1.95 schwarze 29: #include <fcntl.h>
1.127 schwarze 30: #include <glob.h>
1.131 schwarze 31: #include <signal.h>
1.1 kristaps 32: #include <stdio.h>
1.17 schwarze 33: #include <stdint.h>
1.1 kristaps 34: #include <stdlib.h>
35: #include <string.h>
1.224 schwarze 36: #include <termios.h>
1.172 schwarze 37: #include <time.h>
1.1 kristaps 38: #include <unistd.h>
39:
1.136 schwarze 40: #include "mandoc_aux.h"
1.30 schwarze 41: #include "mandoc.h"
1.197 schwarze 42: #include "mandoc_xr.h"
1.136 schwarze 43: #include "roff.h"
1.1 kristaps 44: #include "mdoc.h"
45: #include "man.h"
1.214 schwarze 46: #include "mandoc_parse.h"
1.144 schwarze 47: #include "tag.h"
1.136 schwarze 48: #include "main.h"
1.134 schwarze 49: #include "manconf.h"
1.95 schwarze 50: #include "mansearch.h"
51:
52: enum outmode {
53: OUTMODE_DEF = 0,
54: OUTMODE_FLN,
55: OUTMODE_LST,
56: OUTMODE_ALL,
57: OUTMODE_ONE
58: };
1.1 kristaps 59:
60: enum outt {
1.76 schwarze 61: OUTT_ASCII = 0, /* -Tascii */
1.77 schwarze 62: OUTT_LOCALE, /* -Tlocale */
63: OUTT_UTF8, /* -Tutf8 */
1.76 schwarze 64: OUTT_TREE, /* -Ttree */
1.78 schwarze 65: OUTT_MAN, /* -Tman */
1.76 schwarze 66: OUTT_HTML, /* -Thtml */
1.188 schwarze 67: OUTT_MARKDOWN, /* -Tmarkdown */
1.76 schwarze 68: OUTT_LINT, /* -Tlint */
69: OUTT_PS, /* -Tps */
70: OUTT_PDF /* -Tpdf */
1.1 kristaps 71: };
72:
73: struct curparse {
1.76 schwarze 74: struct mparse *mp;
1.196 schwarze 75: struct manoutput *outopts; /* output options */
76: void *outdata; /* data for output */
77: char *os_s; /* operating system for display */
1.75 schwarze 78: int wstop; /* stop after a file with a warning */
1.196 schwarze 79: enum 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:
1.215 schwarze 86: static void check_xr(void);
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 *);
1.179 schwarze 96: static void outdata_alloc(struct curparse *);
1.132 schwarze 97: static void parse(struct curparse *, int, const char *);
98: static void passthrough(const char *, int, int);
1.149 schwarze 99: static pid_t spawn_pager(struct tag_files *);
1.27 schwarze 100: static int toptions(struct curparse *, char *);
1.184 schwarze 101: static void usage(enum argmode) __attribute__((__noreturn__));
1.45 schwarze 102: static int woptions(struct curparse *, char *);
1.1 kristaps 103:
1.95 schwarze 104: static const int sec_prios[] = {1, 4, 5, 8, 6, 3, 7, 2, 9};
1.110 schwarze 105: static char help_arg[] = "help";
106: static char *help_argv[] = {help_arg, NULL};
1.1 kristaps 107:
1.90 schwarze 108:
1.1 kristaps 109: int
110: main(int argc, char *argv[])
111: {
1.134 schwarze 112: struct manconf conf;
1.186 schwarze 113: struct mansearch search;
1.1 kristaps 114: struct curparse curp;
1.207 schwarze 115: struct winsize ws;
1.149 schwarze 116: struct tag_files *tag_files;
1.186 schwarze 117: struct manpage *res, *resp;
118: const char *progname, *sec, *thisarg;
119: char *conf_file, *defpaths, *auxpaths;
1.219 schwarze 120: char *oarg, *tagarg;
1.113 schwarze 121: unsigned char *uc;
1.171 schwarze 122: size_t i, sz;
1.135 schwarze 123: int prio, best_prio;
1.95 schwarze 124: enum outmode outmode;
1.208 schwarze 125: int fd, startdir;
1.95 schwarze 126: int show_usage;
1.87 schwarze 127: int options;
1.149 schwarze 128: int use_pager;
1.166 schwarze 129: int status, signum;
1.95 schwarze 130: int c;
1.166 schwarze 131: pid_t pager_pid, tc_pgid, man_pgid, pid;
1.1 kristaps 132:
1.162 schwarze 133: progname = getprogname();
1.220 schwarze 134: mandoc_msg_setoutfile(stderr);
1.162 schwarze 135: if (strncmp(progname, "mandocdb", 8) == 0 ||
136: strncmp(progname, "makewhatis", 10) == 0)
1.150 schwarze 137: return mandocdb(argc, argv);
1.19 schwarze 138:
1.187 schwarze 139: if (pledge("stdio rpath tmppath tty proc exec", NULL) == -1)
1.163 schwarze 140: err((int)MANDOCLEVEL_SYSERR, "pledge");
1.154 schwarze 141:
1.95 schwarze 142: /* Search options. */
143:
1.134 schwarze 144: memset(&conf, 0, sizeof(conf));
1.111 schwarze 145: conf_file = defpaths = NULL;
146: auxpaths = NULL;
1.95 schwarze 147:
148: memset(&search, 0, sizeof(struct mansearch));
149: search.outkey = "Nd";
1.186 schwarze 150: oarg = NULL;
1.95 schwarze 151:
1.162 schwarze 152: if (strcmp(progname, "man") == 0)
1.95 schwarze 153: search.argmode = ARG_NAME;
1.162 schwarze 154: else if (strncmp(progname, "apropos", 7) == 0)
1.95 schwarze 155: search.argmode = ARG_EXPR;
1.162 schwarze 156: else if (strncmp(progname, "whatis", 6) == 0)
1.95 schwarze 157: search.argmode = ARG_WORD;
1.162 schwarze 158: else if (strncmp(progname, "help", 4) == 0)
1.110 schwarze 159: search.argmode = ARG_NAME;
1.95 schwarze 160: else
161: search.argmode = ARG_FILE;
162:
163: /* Parser and formatter options. */
164:
1.19 schwarze 165: memset(&curp, 0, sizeof(struct curparse));
1.109 schwarze 166: curp.outtype = OUTT_LOCALE;
1.135 schwarze 167: curp.outopts = &conf.output;
1.103 schwarze 168: options = MPARSE_SO | MPARSE_UTF8 | MPARSE_LATIN1;
1.1 kristaps 169:
1.149 schwarze 170: use_pager = 1;
171: tag_files = NULL;
1.95 schwarze 172: show_usage = 0;
173: outmode = OUTMODE_DEF;
174:
1.192 schwarze 175: while ((c = getopt(argc, argv,
176: "aC:cfhI:iK:klM:m:O:S:s:T:VW:w")) != -1) {
177: if (c == 'i' && search.argmode == ARG_EXPR) {
178: optind--;
179: break;
180: }
1.1 kristaps 181: switch (c) {
1.95 schwarze 182: case 'a':
183: outmode = OUTMODE_ALL;
184: break;
185: case 'C':
186: conf_file = optarg;
187: break;
188: case 'c':
1.149 schwarze 189: use_pager = 0;
1.95 schwarze 190: break;
191: case 'f':
192: search.argmode = ARG_WORD;
193: break;
1.98 schwarze 194: case 'h':
1.135 schwarze 195: conf.output.synopsisonly = 1;
1.149 schwarze 196: use_pager = 0;
1.98 schwarze 197: outmode = OUTMODE_ALL;
198: break;
1.90 schwarze 199: case 'I':
1.83 schwarze 200: if (strncmp(optarg, "os=", 3)) {
1.152 schwarze 201: warnx("-I %s: Bad argument", optarg);
1.150 schwarze 202: return (int)MANDOCLEVEL_BADARG;
1.83 schwarze 203: }
1.196 schwarze 204: if (curp.os_s != NULL) {
1.152 schwarze 205: warnx("-I %s: Duplicate argument", optarg);
1.150 schwarze 206: return (int)MANDOCLEVEL_BADARG;
1.83 schwarze 207: }
1.196 schwarze 208: curp.os_s = mandoc_strdup(optarg + 3);
1.95 schwarze 209: break;
1.103 schwarze 210: case 'K':
211: if ( ! koptions(&options, optarg))
1.150 schwarze 212: return (int)MANDOCLEVEL_BADARG;
1.103 schwarze 213: break;
1.95 schwarze 214: case 'k':
215: search.argmode = ARG_EXPR;
216: break;
1.96 schwarze 217: case 'l':
218: search.argmode = ARG_FILE;
219: outmode = OUTMODE_ALL;
220: break;
1.95 schwarze 221: case 'M':
222: defpaths = optarg;
223: break;
1.90 schwarze 224: case 'm':
1.95 schwarze 225: auxpaths = optarg;
1.1 kristaps 226: break;
1.90 schwarze 227: case 'O':
1.186 schwarze 228: oarg = optarg;
1.17 schwarze 229: break;
1.95 schwarze 230: case 'S':
231: search.arch = optarg;
232: break;
233: case 's':
234: search.sec = optarg;
235: break;
1.90 schwarze 236: case 'T':
1.22 schwarze 237: if ( ! toptions(&curp, optarg))
1.150 schwarze 238: return (int)MANDOCLEVEL_BADARG;
1.1 kristaps 239: break;
1.90 schwarze 240: case 'W':
1.45 schwarze 241: if ( ! woptions(&curp, optarg))
1.150 schwarze 242: return (int)MANDOCLEVEL_BADARG;
1.1 kristaps 243: break;
1.95 schwarze 244: case 'w':
245: outmode = OUTMODE_FLN;
246: break;
1.1 kristaps 247: default:
1.95 schwarze 248: show_usage = 1;
249: break;
250: }
251: }
252:
253: if (show_usage)
254: usage(search.argmode);
255:
256: /* Postprocess options. */
257:
258: if (outmode == OUTMODE_DEF) {
259: switch (search.argmode) {
260: case ARG_FILE:
261: outmode = OUTMODE_ALL;
1.149 schwarze 262: use_pager = 0;
1.95 schwarze 263: break;
264: case ARG_NAME:
265: outmode = OUTMODE_ONE;
266: break;
267: default:
268: outmode = OUTMODE_LST;
269: break;
1.186 schwarze 270: }
271: }
272:
273: if (oarg != NULL) {
274: if (outmode == OUTMODE_LST)
275: search.outkey = oarg;
276: else {
277: while (oarg != NULL) {
278: thisarg = oarg;
279: if (manconf_output(&conf.output,
280: strsep(&oarg, ","), 0) == 0)
281: continue;
282: warnx("-O %s: Bad argument", thisarg);
283: return (int)MANDOCLEVEL_BADARG;
284: }
1.95 schwarze 285: }
286: }
287:
1.218 schwarze 288: if (curp.outtype != OUTT_TREE || !curp.outopts->noval)
289: options |= MPARSE_VALIDATE;
290:
1.151 schwarze 291: if (outmode == OUTMODE_FLN ||
292: outmode == OUTMODE_LST ||
293: !isatty(STDOUT_FILENO))
294: use_pager = 0;
1.207 schwarze 295:
296: if (use_pager &&
297: (conf.output.width == 0 || conf.output.indent == 0) &&
1.209 schwarze 298: ioctl(STDOUT_FILENO, TIOCGWINSZ, &ws) != -1 &&
299: ws.ws_col > 1) {
1.207 schwarze 300: if (conf.output.width == 0 && ws.ws_col < 79)
301: conf.output.width = ws.ws_col - 1;
302: if (conf.output.indent == 0 && ws.ws_col < 66)
303: conf.output.indent = 3;
304: }
1.151 schwarze 305:
1.167 schwarze 306: if (!use_pager)
1.187 schwarze 307: if (pledge("stdio rpath", NULL) == -1)
1.167 schwarze 308: err((int)MANDOCLEVEL_SYSERR, "pledge");
1.154 schwarze 309:
1.95 schwarze 310: /* Parse arguments. */
311:
1.124 schwarze 312: if (argc > 0) {
313: argc -= optind;
314: argv += optind;
315: }
1.95 schwarze 316: resp = NULL;
317:
1.110 schwarze 318: /*
319: * Quirks for help(1)
320: * and for a man(1) section argument without -s.
321: */
322:
323: if (search.argmode == ARG_NAME) {
1.162 schwarze 324: if (*progname == 'h') {
1.110 schwarze 325: if (argc == 0) {
326: argv = help_argv;
327: argc = 1;
328: }
1.117 schwarze 329: } else if (argc > 1 &&
1.128 schwarze 330: ((uc = (unsigned char *)argv[0]) != NULL) &&
1.113 schwarze 331: ((isdigit(uc[0]) && (uc[1] == '\0' ||
332: (isalpha(uc[1]) && uc[2] == '\0'))) ||
333: (uc[0] == 'n' && uc[1] == '\0'))) {
1.128 schwarze 334: search.sec = (char *)uc;
1.110 schwarze 335: argv++;
336: argc--;
337: }
1.122 schwarze 338: if (search.arch == NULL)
339: search.arch = getenv("MACHINE");
340: if (search.arch == NULL)
341: search.arch = MACHINE;
1.95 schwarze 342: }
343:
1.219 schwarze 344: /*
345: * Use the first argument for -O tag in addition to
346: * using it as a search term for man(1) or apropos(1).
347: */
348:
349: if (conf.output.tag != NULL && *conf.output.tag == '\0') {
350: tagarg = argc > 0 && search.argmode == ARG_EXPR ?
351: strchr(*argv, '=') : NULL;
352: conf.output.tag = tagarg == NULL ? *argv : tagarg + 1;
353: }
354:
1.95 schwarze 355: /* man(1), whatis(1), apropos(1) */
356:
357: if (search.argmode != ARG_FILE) {
1.107 schwarze 358: if (search.argmode == ARG_NAME &&
359: outmode == OUTMODE_ONE)
360: search.firstmatch = 1;
1.95 schwarze 361:
362: /* Access the mandoc database. */
363:
1.134 schwarze 364: manconf_parse(&conf, conf_file, defpaths, auxpaths);
365: if ( ! mansearch(&search, &conf.manpath,
366: argc, argv, &res, &sz))
1.95 schwarze 367: usage(search.argmode);
1.119 schwarze 368:
1.208 schwarze 369: if (sz == 0 && search.argmode == ARG_NAME)
370: fs_search(&search, &conf.manpath,
371: argc, argv, &res, &sz);
372:
373: if (search.argmode == ARG_NAME) {
374: for (c = 0; c < argc; c++) {
375: if (strchr(argv[c], '/') == NULL)
376: continue;
377: if (access(argv[c], R_OK) == -1) {
378: warn("%s", argv[c]);
379: continue;
380: }
381: res = mandoc_reallocarray(res,
382: sz + 1, sizeof(*res));
383: res[sz].file = mandoc_strdup(argv[c]);
384: res[sz].names = NULL;
385: res[sz].output = NULL;
1.225 ! schwarze 386: res[sz].bits = 0;
1.208 schwarze 387: res[sz].ipath = SIZE_MAX;
388: res[sz].sec = 10;
389: res[sz].form = FORM_SRC;
390: sz++;
391: }
1.142 schwarze 392: }
1.95 schwarze 393:
394: if (sz == 0) {
1.208 schwarze 395: if (search.argmode != ARG_NAME)
396: warnx("nothing appropriate");
1.215 schwarze 397: mandoc_msg_setrc(MANDOCLEVEL_BADARG);
1.95 schwarze 398: goto out;
399: }
400:
401: /*
402: * For standard man(1) and -a output mode,
403: * prepare for copying filename pointers
404: * into the program parameter array.
405: */
406:
407: if (outmode == OUTMODE_ONE) {
408: argc = 1;
1.171 schwarze 409: best_prio = 20;
1.95 schwarze 410: } else if (outmode == OUTMODE_ALL)
411: argc = (int)sz;
412:
413: /* Iterate all matching manuals. */
414:
1.119 schwarze 415: resp = res;
1.95 schwarze 416: for (i = 0; i < sz; i++) {
417: if (outmode == OUTMODE_FLN)
418: puts(res[i].file);
419: else if (outmode == OUTMODE_LST)
420: printf("%s - %s\n", res[i].names,
421: res[i].output == NULL ? "" :
422: res[i].output);
423: else if (outmode == OUTMODE_ONE) {
424: /* Search for the best section. */
1.171 schwarze 425: sec = res[i].file;
426: sec += strcspn(sec, "123456789");
427: if (sec[0] == '\0')
1.95 schwarze 428: continue;
1.171 schwarze 429: prio = sec_prios[sec[0] - '1'];
430: if (sec[1] != '/')
431: prio += 10;
1.95 schwarze 432: if (prio >= best_prio)
433: continue;
434: best_prio = prio;
435: resp = res + i;
436: }
1.1 kristaps 437: }
438:
1.95 schwarze 439: /*
440: * For man(1), -a and -i output mode, fall through
441: * to the main mandoc(1) code iterating files
442: * and running the parsers on each of them.
443: */
444:
445: if (outmode == OUTMODE_FLN || outmode == OUTMODE_LST)
446: goto out;
447: }
448:
449: /* mandoc(1) */
1.157 schwarze 450:
1.167 schwarze 451: if (use_pager) {
452: if (pledge("stdio rpath tmppath tty proc exec", NULL) == -1)
453: err((int)MANDOCLEVEL_SYSERR, "pledge");
454: } else {
455: if (pledge("stdio rpath", NULL) == -1)
456: err((int)MANDOCLEVEL_SYSERR, "pledge");
457: }
1.95 schwarze 458:
1.189 schwarze 459: if (search.argmode == ARG_FILE)
460: moptions(&options, auxpaths);
1.146 schwarze 461:
1.155 schwarze 462: mchars_alloc();
1.215 schwarze 463: curp.mp = mparse_alloc(options, curp.os_e, curp.os_s);
1.76 schwarze 464:
1.124 schwarze 465: if (argc < 1) {
1.219 schwarze 466: if (use_pager) {
1.149 schwarze 467: tag_files = tag_init();
1.219 schwarze 468: tag_files->tagname = conf.output.tag;
469: }
1.215 schwarze 470: thisarg = "<stdin>";
471: mandoc_msg_setinfilename(thisarg);
472: parse(&curp, STDIN_FILENO, thisarg);
473: mandoc_msg_setinfilename(NULL);
1.118 schwarze 474: }
1.27 schwarze 475:
1.208 schwarze 476: /*
477: * Remember the original working directory, if possible.
478: * This will be needed if some names on the command line
479: * are page names and some are relative file names.
480: * Do not error out if the current directory is not
481: * readable: Maybe it won't be needed after all.
482: */
483: startdir = open(".", O_RDONLY | O_DIRECTORY);
484:
1.124 schwarze 485: while (argc > 0) {
1.208 schwarze 486:
487: /*
488: * Changing directories is not needed in ARG_FILE mode.
489: * Do it on a best-effort basis. Even in case of
490: * failure, some functionality may still work.
491: */
492: if (resp != NULL) {
493: if (resp->ipath != SIZE_MAX)
494: (void)chdir(conf.manpath.paths[resp->ipath]);
495: else if (startdir != -1)
496: (void)fchdir(startdir);
1.215 schwarze 497: thisarg = resp->file;
498: } else
499: thisarg = *argv;
1.208 schwarze 500:
1.215 schwarze 501: fd = mparse_open(curp.mp, thisarg);
1.118 schwarze 502: if (fd != -1) {
1.149 schwarze 503: if (use_pager) {
1.212 schwarze 504: use_pager = 0;
1.149 schwarze 505: tag_files = tag_init();
1.219 schwarze 506: tag_files->tagname = conf.output.tag;
1.149 schwarze 507: }
1.118 schwarze 508:
1.217 schwarze 509: mandoc_msg_setinfilename(thisarg);
1.215 schwarze 510: if (resp == NULL || resp->form == FORM_SRC)
511: parse(&curp, fd, thisarg);
1.208 schwarze 512: else
1.135 schwarze 513: passthrough(resp->file, fd,
514: conf.output.synopsisonly);
1.217 schwarze 515: mandoc_msg_setinfilename(NULL);
1.205 schwarze 516:
517: if (ferror(stdout)) {
518: if (tag_files != NULL) {
519: warn("%s", tag_files->ofn);
520: tag_unlink();
521: tag_files = NULL;
522: } else
523: warn("stdout");
1.215 schwarze 524: mandoc_msg_setrc(MANDOCLEVEL_SYSERR);
1.205 schwarze 525: break;
526: }
1.118 schwarze 527:
1.179 schwarze 528: if (argc > 1 && curp.outtype <= OUTT_UTF8) {
529: if (curp.outdata == NULL)
530: outdata_alloc(&curp);
1.173 schwarze 531: terminal_sepline(curp.outdata);
1.179 schwarze 532: }
1.217 schwarze 533: } else
534: mandoc_msg(MANDOCERR_FILE, 0, 0,
1.221 schwarze 535: "%s: %s", thisarg, strerror(errno));
1.100 schwarze 536:
1.215 schwarze 537: if (curp.wstop && mandoc_msg_getrc() != MANDOCLEVEL_OK)
1.27 schwarze 538: break;
1.116 schwarze 539:
1.118 schwarze 540: if (resp != NULL)
541: resp++;
542: else
543: argv++;
544: if (--argc)
545: mparse_reset(curp.mp);
1.1 kristaps 546: }
1.208 schwarze 547: if (startdir != -1) {
548: (void)fchdir(startdir);
549: close(startdir);
550: }
1.1 kristaps 551:
1.160 schwarze 552: if (curp.outdata != NULL) {
553: switch (curp.outtype) {
554: case OUTT_HTML:
555: html_free(curp.outdata);
556: break;
557: case OUTT_UTF8:
558: case OUTT_LOCALE:
559: case OUTT_ASCII:
560: ascii_free(curp.outdata);
561: break;
562: case OUTT_PDF:
563: case OUTT_PS:
564: pspdf_free(curp.outdata);
565: break;
566: default:
567: break;
568: }
1.158 schwarze 569: }
1.197 schwarze 570: mandoc_xr_free();
1.102 schwarze 571: mparse_free(curp.mp);
1.155 schwarze 572: mchars_free();
1.95 schwarze 573:
574: out:
575: if (search.argmode != ARG_FILE) {
1.134 schwarze 576: manconf_free(&conf);
1.95 schwarze 577: mansearch_free(res, sz);
578: }
579:
1.196 schwarze 580: free(curp.os_s);
1.1 kristaps 581:
1.129 schwarze 582: /*
1.149 schwarze 583: * When using a pager, finish writing both temporary files,
584: * fork it, wait for the user to close it, and clean up.
1.129 schwarze 585: */
586:
1.149 schwarze 587: if (tag_files != NULL) {
1.130 schwarze 588: fclose(stdout);
1.144 schwarze 589: tag_write();
1.166 schwarze 590: man_pgid = getpgid(0);
591: tag_files->tcpgid = man_pgid == getpid() ?
592: getpgid(getppid()) : man_pgid;
593: pager_pid = 0;
594: signum = SIGSTOP;
1.165 schwarze 595: for (;;) {
1.166 schwarze 596:
597: /* Stop here until moved to the foreground. */
598:
1.182 schwarze 599: tc_pgid = tcgetpgrp(tag_files->ofd);
1.166 schwarze 600: if (tc_pgid != man_pgid) {
601: if (tc_pgid == pager_pid) {
1.182 schwarze 602: (void)tcsetpgrp(tag_files->ofd,
1.166 schwarze 603: man_pgid);
604: if (signum == SIGTTIN)
605: continue;
606: } else
607: tag_files->tcpgid = tc_pgid;
608: kill(0, signum);
609: continue;
610: }
611:
612: /* Once in the foreground, activate the pager. */
613:
614: if (pager_pid) {
1.182 schwarze 615: (void)tcsetpgrp(tag_files->ofd, pager_pid);
1.166 schwarze 616: kill(pager_pid, SIGCONT);
617: } else
618: pager_pid = spawn_pager(tag_files);
619:
620: /* Wait for the pager to stop or exit. */
621:
622: while ((pid = waitpid(pager_pid, &status,
623: WUNTRACED)) == -1 && errno == EINTR)
624: continue;
625:
626: if (pid == -1) {
1.165 schwarze 627: warn("wait");
1.215 schwarze 628: mandoc_msg_setrc(MANDOCLEVEL_SYSERR);
1.165 schwarze 629: break;
630: }
631: if (!WIFSTOPPED(status))
632: break;
633:
1.166 schwarze 634: signum = WSTOPSIG(status);
1.165 schwarze 635: }
1.144 schwarze 636: tag_unlink();
1.130 schwarze 637: }
1.215 schwarze 638: return (int)mandoc_msg_getrc();
1.1 kristaps 639: }
640:
1.20 schwarze 641: static void
1.95 schwarze 642: usage(enum argmode argmode)
1.1 kristaps 643: {
644:
1.95 schwarze 645: switch (argmode) {
646: case ARG_FILE:
1.190 schwarze 647: fputs("usage: mandoc [-ac] [-I os=name] "
648: "[-K encoding] [-mdoc | -man] [-O options]\n"
1.133 schwarze 649: "\t [-T output] [-W level] [file ...]\n", stderr);
1.95 schwarze 650: break;
651: case ARG_NAME:
1.190 schwarze 652: fputs("usage: man [-acfhklw] [-C file] [-M path] "
653: "[-m path] [-S subsection]\n"
654: "\t [[-s] section] name ...\n", stderr);
1.95 schwarze 655: break;
656: case ARG_WORD:
1.190 schwarze 657: fputs("usage: whatis [-afk] [-C file] "
1.96 schwarze 658: "[-M path] [-m path] [-O outkey] [-S arch]\n"
659: "\t [-s section] name ...\n", stderr);
1.95 schwarze 660: break;
661: case ARG_EXPR:
1.190 schwarze 662: fputs("usage: apropos [-afk] [-C file] "
1.96 schwarze 663: "[-M path] [-m path] [-O outkey] [-S arch]\n"
1.95 schwarze 664: "\t [-s section] expression ...\n", stderr);
665: break;
666: }
1.47 schwarze 667: exit((int)MANDOCLEVEL_BADARG);
1.119 schwarze 668: }
669:
670: static int
671: fs_lookup(const struct manpaths *paths, size_t ipath,
672: const char *sec, const char *arch, const char *name,
673: struct manpage **res, size_t *ressz)
674: {
1.127 schwarze 675: glob_t globinfo;
1.119 schwarze 676: struct manpage *page;
677: char *file;
1.177 schwarze 678: int globres;
679: enum form form;
1.119 schwarze 680:
1.127 schwarze 681: form = FORM_SRC;
1.119 schwarze 682: mandoc_asprintf(&file, "%s/man%s/%s.%s",
683: paths->paths[ipath], sec, name, sec);
1.127 schwarze 684: if (access(file, R_OK) != -1)
1.119 schwarze 685: goto found;
686: free(file);
687:
688: mandoc_asprintf(&file, "%s/cat%s/%s.0",
689: paths->paths[ipath], sec, name);
690: if (access(file, R_OK) != -1) {
691: form = FORM_CAT;
692: goto found;
693: }
694: free(file);
695:
696: if (arch != NULL) {
697: mandoc_asprintf(&file, "%s/man%s/%s/%s.%s",
698: paths->paths[ipath], sec, arch, name, sec);
1.127 schwarze 699: if (access(file, R_OK) != -1)
1.119 schwarze 700: goto found;
701: free(file);
702: }
1.127 schwarze 703:
1.145 schwarze 704: mandoc_asprintf(&file, "%s/man%s/%s.[01-9]*",
1.127 schwarze 705: paths->paths[ipath], sec, name);
706: globres = glob(file, 0, NULL, &globinfo);
707: if (globres != 0 && globres != GLOB_NOMATCH)
1.152 schwarze 708: warn("%s: glob", file);
1.127 schwarze 709: free(file);
710: if (globres == 0)
711: file = mandoc_strdup(*globinfo.gl_pathv);
712: globfree(&globinfo);
1.199 schwarze 713: if (globres == 0)
714: goto found;
715: if (res != NULL || ipath + 1 != paths->sz)
1.150 schwarze 716: return 0;
1.119 schwarze 717:
1.199 schwarze 718: mandoc_asprintf(&file, "%s.%s", name, sec);
719: globres = access(file, R_OK);
720: free(file);
721: return globres != -1;
722:
1.119 schwarze 723: found:
1.152 schwarze 724: warnx("outdated mandoc.db lacks %s(%s) entry, run makewhatis %s",
725: name, sec, paths->paths[ipath]);
1.199 schwarze 726: if (res == NULL) {
727: free(file);
1.198 schwarze 728: return 1;
1.199 schwarze 729: }
1.119 schwarze 730: *res = mandoc_reallocarray(*res, ++*ressz, sizeof(struct manpage));
731: page = *res + (*ressz - 1);
732: page->file = file;
733: page->names = NULL;
734: page->output = NULL;
1.225 ! schwarze 735: page->bits = NAME_FILE & NAME_MASK;
1.119 schwarze 736: page->ipath = ipath;
737: page->sec = (*sec >= '1' && *sec <= '9') ? *sec - '1' + 1 : 10;
738: page->form = form;
1.150 schwarze 739: return 1;
1.119 schwarze 740: }
741:
1.198 schwarze 742: static int
1.119 schwarze 743: fs_search(const struct mansearch *cfg, const struct manpaths *paths,
744: int argc, char **argv, struct manpage **res, size_t *ressz)
745: {
746: const char *const sections[] =
1.171 schwarze 747: {"1", "8", "6", "2", "3", "5", "7", "4", "9", "3p"};
1.119 schwarze 748: const size_t nsec = sizeof(sections)/sizeof(sections[0]);
749:
750: size_t ipath, isec, lastsz;
751:
752: assert(cfg->argmode == ARG_NAME);
753:
1.198 schwarze 754: if (res != NULL)
755: *res = NULL;
1.119 schwarze 756: *ressz = lastsz = 0;
757: while (argc) {
758: for (ipath = 0; ipath < paths->sz; ipath++) {
759: if (cfg->sec != NULL) {
760: if (fs_lookup(paths, ipath, cfg->sec,
761: cfg->arch, *argv, res, ressz) &&
762: cfg->firstmatch)
1.198 schwarze 763: return 1;
1.119 schwarze 764: } else for (isec = 0; isec < nsec; isec++)
765: if (fs_lookup(paths, ipath, sections[isec],
766: cfg->arch, *argv, res, ressz) &&
767: cfg->firstmatch)
1.198 schwarze 768: return 1;
1.119 schwarze 769: }
1.208 schwarze 770: if (res != NULL && *ressz == lastsz &&
1.210 schwarze 771: strchr(*argv, '/') == NULL) {
1.223 schwarze 772: if (cfg->arch != NULL &&
773: arch_valid(cfg->arch, MANDOC_OS_OPENBSD) == 0)
774: warnx("Unknown architecture \"%s\".",
775: cfg->arch);
776: else if (cfg->sec == NULL)
1.210 schwarze 777: warnx("No entry for %s in the manual.",
778: *argv);
779: else
780: warnx("No entry for %s in section %s "
781: "of the manual.", *argv, cfg->sec);
782: }
1.119 schwarze 783: lastsz = *ressz;
784: argv++;
785: argc--;
786: }
1.198 schwarze 787: return 0;
1.1 kristaps 788: }
789:
1.27 schwarze 790: static void
1.132 schwarze 791: parse(struct curparse *curp, int fd, const char *file)
1.52 schwarze 792: {
1.218 schwarze 793: struct roff_meta *meta;
1.52 schwarze 794:
1.76 schwarze 795: /* Begin by parsing the file itself. */
1.52 schwarze 796:
1.76 schwarze 797: assert(file);
1.170 florian 798: assert(fd >= 0);
1.52 schwarze 799:
1.215 schwarze 800: mparse_readfd(curp->mp, fd, file);
1.168 schwarze 801: if (fd != STDIN_FILENO)
802: close(fd);
1.1 kristaps 803:
1.51 schwarze 804: /*
1.76 schwarze 805: * With -Wstop and warnings or errors of at least the requested
806: * level, do not produce output.
1.51 schwarze 807: */
808:
1.215 schwarze 809: if (curp->wstop && mandoc_msg_getrc() != MANDOCLEVEL_OK)
1.132 schwarze 810: return;
1.51 schwarze 811:
1.179 schwarze 812: if (curp->outdata == NULL)
813: outdata_alloc(curp);
1.222 schwarze 814: else if (curp->outtype == OUTT_HTML)
815: html_reset(curp);
1.51 schwarze 816:
1.218 schwarze 817: mandoc_xr_reset();
818: meta = mparse_result(curp->mp);
1.158 schwarze 819:
820: /* Execute the out device, if it exists. */
821:
1.218 schwarze 822: if (meta->macroset == MACROSET_MDOC) {
1.51 schwarze 823: switch (curp->outtype) {
1.90 schwarze 824: case OUTT_HTML:
1.218 schwarze 825: html_mdoc(curp->outdata, meta);
1.51 schwarze 826: break;
1.90 schwarze 827: case OUTT_TREE:
1.218 schwarze 828: tree_mdoc(curp->outdata, meta);
1.51 schwarze 829: break;
1.90 schwarze 830: case OUTT_MAN:
1.218 schwarze 831: man_mdoc(curp->outdata, meta);
1.78 schwarze 832: break;
1.90 schwarze 833: case OUTT_PDF:
834: case OUTT_ASCII:
835: case OUTT_UTF8:
836: case OUTT_LOCALE:
837: case OUTT_PS:
1.218 schwarze 838: terminal_mdoc(curp->outdata, meta);
1.158 schwarze 839: break;
1.188 schwarze 840: case OUTT_MARKDOWN:
1.218 schwarze 841: markdown_mdoc(curp->outdata, meta);
1.188 schwarze 842: break;
1.158 schwarze 843: default:
844: break;
845: }
846: }
1.218 schwarze 847: if (meta->macroset == MACROSET_MAN) {
1.158 schwarze 848: switch (curp->outtype) {
849: case OUTT_HTML:
1.218 schwarze 850: html_man(curp->outdata, meta);
1.158 schwarze 851: break;
852: case OUTT_TREE:
1.218 schwarze 853: tree_man(curp->outdata, meta);
1.158 schwarze 854: break;
855: case OUTT_MAN:
1.211 schwarze 856: mparse_copy(curp->mp);
1.158 schwarze 857: break;
858: case OUTT_PDF:
859: case OUTT_ASCII:
860: case OUTT_UTF8:
861: case OUTT_LOCALE:
862: case OUTT_PS:
1.218 schwarze 863: terminal_man(curp->outdata, meta);
1.51 schwarze 864: break;
865: default:
866: break;
867: }
1.179 schwarze 868: }
1.215 schwarze 869: if (mandoc_msg_getmin() < MANDOCERR_STYLE)
870: check_xr();
1.197 schwarze 871: }
872:
873: static void
1.215 schwarze 874: check_xr(void)
1.197 schwarze 875: {
876: static struct manpaths paths;
877: struct mansearch search;
878: struct mandoc_xr *xr;
879: size_t sz;
880:
881: if (paths.sz == 0)
882: manpath_base(&paths);
883:
884: for (xr = mandoc_xr_get(); xr != NULL; xr = xr->next) {
1.200 schwarze 885: if (xr->line == -1)
886: continue;
1.197 schwarze 887: search.arch = NULL;
888: search.sec = xr->sec;
889: search.outkey = NULL;
890: search.argmode = ARG_NAME;
891: search.firstmatch = 1;
892: if (mansearch(&search, &paths, 1, &xr->name, NULL, &sz))
1.198 schwarze 893: continue;
894: if (fs_search(&search, &paths, 1, &xr->name, NULL, &sz))
1.197 schwarze 895: continue;
1.201 schwarze 896: if (xr->count == 1)
1.216 schwarze 897: mandoc_msg(MANDOCERR_XR_BAD, xr->line,
898: xr->pos + 1, "Xr %s %s", xr->name, xr->sec);
1.201 schwarze 899: else
1.216 schwarze 900: mandoc_msg(MANDOCERR_XR_BAD, xr->line,
901: xr->pos + 1, "Xr %s %s (%d times)",
1.201 schwarze 902: xr->name, xr->sec, xr->count);
1.197 schwarze 903: }
1.179 schwarze 904: }
905:
906: static void
907: outdata_alloc(struct curparse *curp)
908: {
909: switch (curp->outtype) {
910: case OUTT_HTML:
911: curp->outdata = html_alloc(curp->outopts);
912: break;
913: case OUTT_UTF8:
914: curp->outdata = utf8_alloc(curp->outopts);
915: break;
916: case OUTT_LOCALE:
917: curp->outdata = locale_alloc(curp->outopts);
918: break;
919: case OUTT_ASCII:
920: curp->outdata = ascii_alloc(curp->outopts);
921: break;
922: case OUTT_PDF:
923: curp->outdata = pdf_alloc(curp->outopts);
924: break;
925: case OUTT_PS:
926: curp->outdata = ps_alloc(curp->outopts);
927: break;
928: default:
929: break;
1.51 schwarze 930: }
1.1 kristaps 931: }
932:
1.132 schwarze 933: static void
1.105 schwarze 934: passthrough(const char *file, int fd, int synopsis_only)
1.95 schwarze 935: {
1.105 schwarze 936: const char synb[] = "S\bSY\bYN\bNO\bOP\bPS\bSI\bIS\bS";
937: const char synr[] = "SYNOPSIS";
938:
939: FILE *stream;
1.95 schwarze 940: const char *syscall;
1.164 schwarze 941: char *line, *cp;
942: size_t linesz;
1.180 schwarze 943: ssize_t len, written;
1.105 schwarze 944: int print;
1.116 schwarze 945:
1.164 schwarze 946: line = NULL;
947: linesz = 0;
1.105 schwarze 948:
1.180 schwarze 949: if (fflush(stdout) == EOF) {
950: syscall = "fflush";
951: goto fail;
952: }
953:
1.105 schwarze 954: if ((stream = fdopen(fd, "r")) == NULL) {
955: close(fd);
956: syscall = "fdopen";
957: goto fail;
958: }
1.95 schwarze 959:
1.105 schwarze 960: print = 0;
1.180 schwarze 961: while ((len = getline(&line, &linesz, stream)) != -1) {
1.164 schwarze 962: cp = line;
1.105 schwarze 963: if (synopsis_only) {
964: if (print) {
1.164 schwarze 965: if ( ! isspace((unsigned char)*cp))
1.105 schwarze 966: goto done;
1.180 schwarze 967: while (isspace((unsigned char)*cp)) {
1.164 schwarze 968: cp++;
1.180 schwarze 969: len--;
970: }
1.105 schwarze 971: } else {
1.164 schwarze 972: if (strcmp(cp, synb) == 0 ||
973: strcmp(cp, synr) == 0)
1.105 schwarze 974: print = 1;
975: continue;
976: }
977: }
1.180 schwarze 978: for (; len > 0; len -= written) {
979: if ((written = write(STDOUT_FILENO, cp, len)) != -1)
980: continue;
1.164 schwarze 981: fclose(stream);
1.180 schwarze 982: syscall = "write";
1.164 schwarze 983: goto fail;
984: }
1.105 schwarze 985: }
1.95 schwarze 986:
1.105 schwarze 987: if (ferror(stream)) {
988: fclose(stream);
1.164 schwarze 989: syscall = "getline";
1.105 schwarze 990: goto fail;
991: }
1.101 schwarze 992:
1.105 schwarze 993: done:
1.164 schwarze 994: free(line);
1.105 schwarze 995: fclose(stream);
1.132 schwarze 996: return;
1.95 schwarze 997:
998: fail:
1.164 schwarze 999: free(line);
1.152 schwarze 1000: warn("%s: SYSERR: %s", file, syscall);
1.215 schwarze 1001: mandoc_msg_setrc(MANDOCLEVEL_SYSERR);
1.103 schwarze 1002: }
1003:
1004: static int
1005: koptions(int *options, char *arg)
1006: {
1007:
1008: if ( ! strcmp(arg, "utf-8")) {
1009: *options |= MPARSE_UTF8;
1010: *options &= ~MPARSE_LATIN1;
1011: } else if ( ! strcmp(arg, "iso-8859-1")) {
1012: *options |= MPARSE_LATIN1;
1013: *options &= ~MPARSE_UTF8;
1014: } else if ( ! strcmp(arg, "us-ascii")) {
1015: *options &= ~(MPARSE_UTF8 | MPARSE_LATIN1);
1016: } else {
1.152 schwarze 1017: warnx("-K %s: Bad argument", arg);
1.150 schwarze 1018: return 0;
1.103 schwarze 1019: }
1.150 schwarze 1020: return 1;
1.95 schwarze 1021: }
1022:
1.189 schwarze 1023: static void
1.87 schwarze 1024: moptions(int *options, char *arg)
1.1 kristaps 1025: {
1026:
1.95 schwarze 1027: if (arg == NULL)
1.189 schwarze 1028: return;
1029: if (strcmp(arg, "doc") == 0)
1.87 schwarze 1030: *options |= MPARSE_MDOC;
1.189 schwarze 1031: else if (strcmp(arg, "an") == 0)
1.87 schwarze 1032: *options |= MPARSE_MAN;
1.1 kristaps 1033: }
1034:
1035: static int
1.22 schwarze 1036: toptions(struct curparse *curp, char *arg)
1.1 kristaps 1037: {
1038:
1039: if (0 == strcmp(arg, "ascii"))
1.22 schwarze 1040: curp->outtype = OUTT_ASCII;
1041: else if (0 == strcmp(arg, "lint")) {
1042: curp->outtype = OUTT_LINT;
1.215 schwarze 1043: mandoc_msg_setoutfile(stdout);
1044: mandoc_msg_setmin(MANDOCERR_BASE);
1.76 schwarze 1045: } else if (0 == strcmp(arg, "tree"))
1.22 schwarze 1046: curp->outtype = OUTT_TREE;
1.78 schwarze 1047: else if (0 == strcmp(arg, "man"))
1048: curp->outtype = OUTT_MAN;
1.17 schwarze 1049: else if (0 == strcmp(arg, "html"))
1.22 schwarze 1050: curp->outtype = OUTT_HTML;
1.188 schwarze 1051: else if (0 == strcmp(arg, "markdown"))
1052: curp->outtype = OUTT_MARKDOWN;
1.77 schwarze 1053: else if (0 == strcmp(arg, "utf8"))
1054: curp->outtype = OUTT_UTF8;
1055: else if (0 == strcmp(arg, "locale"))
1056: curp->outtype = OUTT_LOCALE;
1.36 schwarze 1057: else if (0 == strcmp(arg, "ps"))
1058: curp->outtype = OUTT_PS;
1.43 schwarze 1059: else if (0 == strcmp(arg, "pdf"))
1060: curp->outtype = OUTT_PDF;
1.1 kristaps 1061: else {
1.152 schwarze 1062: warnx("-T %s: Bad argument", arg);
1.150 schwarze 1063: return 0;
1.1 kristaps 1064: }
1065:
1.150 schwarze 1066: return 1;
1.1 kristaps 1067: }
1068:
1069: static int
1.45 schwarze 1070: woptions(struct curparse *curp, char *arg)
1.1 kristaps 1071: {
1.10 schwarze 1072: char *v, *o;
1.196 schwarze 1073: const char *toks[11];
1.1 kristaps 1074:
1.45 schwarze 1075: toks[0] = "stop";
1076: toks[1] = "all";
1.196 schwarze 1077: toks[2] = "base";
1078: toks[3] = "style";
1079: toks[4] = "warning";
1080: toks[5] = "error";
1081: toks[6] = "unsupp";
1082: toks[7] = "fatal";
1083: toks[8] = "openbsd";
1084: toks[9] = "netbsd";
1085: toks[10] = NULL;
1.1 kristaps 1086:
1.10 schwarze 1087: while (*arg) {
1088: o = arg;
1.176 schwarze 1089: switch (getsubopt(&arg, (char * const *)toks, &v)) {
1.90 schwarze 1090: case 0:
1.45 schwarze 1091: curp->wstop = 1;
1.1 kristaps 1092: break;
1.90 schwarze 1093: case 1:
1094: case 2:
1.215 schwarze 1095: mandoc_msg_setmin(MANDOCERR_BASE);
1.193 schwarze 1096: break;
1097: case 3:
1.215 schwarze 1098: mandoc_msg_setmin(MANDOCERR_STYLE);
1.1 kristaps 1099: break;
1.193 schwarze 1100: case 4:
1.215 schwarze 1101: mandoc_msg_setmin(MANDOCERR_WARNING);
1.1 kristaps 1102: break;
1.193 schwarze 1103: case 5:
1.215 schwarze 1104: mandoc_msg_setmin(MANDOCERR_ERROR);
1.123 schwarze 1105: break;
1.193 schwarze 1106: case 6:
1.215 schwarze 1107: mandoc_msg_setmin(MANDOCERR_UNSUPP);
1.196 schwarze 1108: break;
1109: case 7:
1.215 schwarze 1110: mandoc_msg_setmin(MANDOCERR_MAX);
1.196 schwarze 1111: break;
1112: case 8:
1.215 schwarze 1113: mandoc_msg_setmin(MANDOCERR_BASE);
1.196 schwarze 1114: curp->os_e = MANDOC_OS_OPENBSD;
1115: break;
1116: case 9:
1.215 schwarze 1117: mandoc_msg_setmin(MANDOCERR_BASE);
1.196 schwarze 1118: curp->os_e = MANDOC_OS_NETBSD;
1.19 schwarze 1119: break;
1.1 kristaps 1120: default:
1.152 schwarze 1121: warnx("-W %s: Bad argument", o);
1.150 schwarze 1122: return 0;
1.1 kristaps 1123: }
1.10 schwarze 1124: }
1.150 schwarze 1125: return 1;
1.95 schwarze 1126: }
1127:
1.130 schwarze 1128: static pid_t
1.149 schwarze 1129: spawn_pager(struct tag_files *tag_files)
1.95 schwarze 1130: {
1.172 schwarze 1131: const struct timespec timeout = { 0, 100000000 }; /* 0.1s */
1.95 schwarze 1132: #define MAX_PAGER_ARGS 16
1133: char *argv[MAX_PAGER_ARGS];
1134: const char *pager;
1135: char *cp;
1.144 schwarze 1136: size_t cmdlen;
1.212 schwarze 1137: int argc, use_ofn;
1.130 schwarze 1138: pid_t pager_pid;
1.95 schwarze 1139:
1.144 schwarze 1140: pager = getenv("MANPAGER");
1141: if (pager == NULL || *pager == '\0')
1142: pager = getenv("PAGER");
1143: if (pager == NULL || *pager == '\0')
1144: pager = "more -s";
1145: cp = mandoc_strdup(pager);
1146:
1147: /*
1148: * Parse the pager command into words.
1149: * Intentionally do not do anything fancy here.
1150: */
1151:
1152: argc = 0;
1.212 schwarze 1153: while (argc + 5 < MAX_PAGER_ARGS) {
1.144 schwarze 1154: argv[argc++] = cp;
1155: cp = strchr(cp, ' ');
1156: if (cp == NULL)
1157: break;
1158: *cp++ = '\0';
1159: while (*cp == ' ')
1160: cp++;
1161: if (*cp == '\0')
1162: break;
1163: }
1164:
1.149 schwarze 1165: /* For more(1) and less(1), use the tag file. */
1.144 schwarze 1166:
1.212 schwarze 1167: use_ofn = 1;
1.149 schwarze 1168: if ((cmdlen = strlen(argv[0])) >= 4) {
1.144 schwarze 1169: cp = argv[0] + cmdlen - 4;
1.149 schwarze 1170: if (strcmp(cp, "less") == 0 || strcmp(cp, "more") == 0) {
1171: argv[argc++] = mandoc_strdup("-T");
1172: argv[argc++] = tag_files->tfn;
1.212 schwarze 1173: if (tag_files->tagname != NULL) {
1174: argv[argc++] = mandoc_strdup("-t");
1175: argv[argc++] = tag_files->tagname;
1176: use_ofn = 0;
1177: }
1.149 schwarze 1178: }
1.144 schwarze 1179: }
1.212 schwarze 1180: if (use_ofn)
1181: argv[argc++] = tag_files->ofn;
1.144 schwarze 1182: argv[argc] = NULL;
1183:
1.130 schwarze 1184: switch (pager_pid = fork()) {
1.95 schwarze 1185: case -1:
1.152 schwarze 1186: err((int)MANDOCLEVEL_SYSERR, "fork");
1.95 schwarze 1187: case 0:
1.129 schwarze 1188: break;
1189: default:
1.165 schwarze 1190: (void)setpgid(pager_pid, 0);
1.182 schwarze 1191: (void)tcsetpgrp(tag_files->ofd, pager_pid);
1.165 schwarze 1192: if (pledge("stdio rpath tmppath tty proc", NULL) == -1)
1.163 schwarze 1193: err((int)MANDOCLEVEL_SYSERR, "pledge");
1.166 schwarze 1194: tag_files->pager_pid = pager_pid;
1.150 schwarze 1195: return pager_pid;
1.95 schwarze 1196: }
1197:
1.129 schwarze 1198: /* The child process becomes the pager. */
1.95 schwarze 1199:
1.152 schwarze 1200: if (dup2(tag_files->ofd, STDOUT_FILENO) == -1)
1201: err((int)MANDOCLEVEL_SYSERR, "pager stdout");
1.149 schwarze 1202: close(tag_files->ofd);
1.206 tb 1203: assert(tag_files->tfd == -1);
1.172 schwarze 1204:
1205: /* Do not start the pager before controlling the terminal. */
1206:
1.182 schwarze 1207: while (tcgetpgrp(STDOUT_FILENO) != getpid())
1.172 schwarze 1208: nanosleep(&timeout, NULL);
1209:
1.95 schwarze 1210: execvp(argv[0], argv);
1.152 schwarze 1211: err((int)MANDOCLEVEL_SYSERR, "exec %s", argv[0]);
1.30 schwarze 1212: }
![[BACK]](/icons/back.gif){kind=icon}
Return to main.c CVS log ![[TXT]](/icons/text.gif){kind=icon}
![[DIR]](/icons/dir.gif){kind=icon}
Up to [local] / src / usr.bin / mandoc