Annotation of src/usr.bin/mandoc/main.c, Revision 1.228
1.228 ! schwarze 1: /* $OpenBSD: main.c,v 1.227 2019/05/03 16:14:31 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: thisarg = oarg;
280: if (manconf_output(&conf.output,
281: strsep(&oarg, ","), 0) == 0)
282: continue;
283: warnx("-O %s: Bad argument", thisarg);
284: return (int)MANDOCLEVEL_BADARG;
285: }
1.95 schwarze 286: }
287: }
288:
1.218 schwarze 289: if (curp.outtype != OUTT_TREE || !curp.outopts->noval)
290: options |= MPARSE_VALIDATE;
291:
1.151 schwarze 292: if (outmode == OUTMODE_FLN ||
293: outmode == OUTMODE_LST ||
294: !isatty(STDOUT_FILENO))
295: use_pager = 0;
1.207 schwarze 296:
297: if (use_pager &&
298: (conf.output.width == 0 || conf.output.indent == 0) &&
1.209 schwarze 299: ioctl(STDOUT_FILENO, TIOCGWINSZ, &ws) != -1 &&
300: ws.ws_col > 1) {
1.207 schwarze 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' ||
1.226 schwarze 333: isalpha(uc[1]))) ||
1.113 schwarze 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:
1.219 schwarze 345: /*
346: * Use the first argument for -O tag in addition to
347: * using it as a search term for man(1) or apropos(1).
348: */
349:
350: if (conf.output.tag != NULL && *conf.output.tag == '\0') {
351: tagarg = argc > 0 && search.argmode == ARG_EXPR ?
352: strchr(*argv, '=') : NULL;
353: conf.output.tag = tagarg == NULL ? *argv : tagarg + 1;
354: }
355:
1.95 schwarze 356: /* man(1), whatis(1), apropos(1) */
357:
358: if (search.argmode != ARG_FILE) {
1.107 schwarze 359: if (search.argmode == ARG_NAME &&
360: outmode == OUTMODE_ONE)
361: search.firstmatch = 1;
1.95 schwarze 362:
363: /* Access the mandoc database. */
364:
1.134 schwarze 365: manconf_parse(&conf, conf_file, defpaths, auxpaths);
366: if ( ! mansearch(&search, &conf.manpath,
367: argc, argv, &res, &sz))
1.95 schwarze 368: usage(search.argmode);
1.119 schwarze 369:
1.208 schwarze 370: if (sz == 0 && search.argmode == ARG_NAME)
371: fs_search(&search, &conf.manpath,
372: argc, argv, &res, &sz);
373:
374: if (search.argmode == ARG_NAME) {
375: for (c = 0; c < argc; c++) {
376: if (strchr(argv[c], '/') == NULL)
377: continue;
378: if (access(argv[c], R_OK) == -1) {
379: warn("%s", argv[c]);
380: continue;
381: }
382: res = mandoc_reallocarray(res,
383: sz + 1, sizeof(*res));
384: res[sz].file = mandoc_strdup(argv[c]);
385: res[sz].names = NULL;
386: res[sz].output = NULL;
1.225 schwarze 387: res[sz].bits = 0;
1.208 schwarze 388: res[sz].ipath = SIZE_MAX;
389: res[sz].sec = 10;
390: res[sz].form = FORM_SRC;
391: sz++;
392: }
1.142 schwarze 393: }
1.95 schwarze 394:
395: if (sz == 0) {
1.208 schwarze 396: if (search.argmode != ARG_NAME)
397: warnx("nothing appropriate");
1.215 schwarze 398: mandoc_msg_setrc(MANDOCLEVEL_BADARG);
1.95 schwarze 399: goto out;
400: }
401:
402: /*
403: * For standard man(1) and -a output mode,
404: * prepare for copying filename pointers
405: * into the program parameter array.
406: */
407:
408: if (outmode == OUTMODE_ONE) {
409: argc = 1;
1.227 schwarze 410: best_prio = 40;
1.95 schwarze 411: } else if (outmode == OUTMODE_ALL)
412: argc = (int)sz;
413:
414: /* Iterate all matching manuals. */
415:
1.119 schwarze 416: resp = res;
1.95 schwarze 417: for (i = 0; i < sz; i++) {
418: if (outmode == OUTMODE_FLN)
419: puts(res[i].file);
420: else if (outmode == OUTMODE_LST)
421: printf("%s - %s\n", res[i].names,
422: res[i].output == NULL ? "" :
423: res[i].output);
424: else if (outmode == OUTMODE_ONE) {
425: /* Search for the best section. */
1.171 schwarze 426: sec = res[i].file;
427: sec += strcspn(sec, "123456789");
428: if (sec[0] == '\0')
1.227 schwarze 429: continue; /* No section at all. */
1.171 schwarze 430: prio = sec_prios[sec[0] - '1'];
1.227 schwarze 431: if (search.sec != NULL) {
432: ssz = strlen(search.sec);
433: if (strncmp(sec, search.sec, ssz) == 0)
434: sec += ssz;
435: } else
436: sec++; /* Prefer without suffix. */
437: if (*sec != '/')
438: prio += 10; /* Wrong dir name. */
439: if (search.sec != NULL &&
440: (strlen(sec) <= ssz + 3 ||
441: strcmp(sec + strlen(sec) - ssz,
442: search.sec) != 0))
443: prio += 20; /* Wrong file ext. */
1.95 schwarze 444: if (prio >= best_prio)
445: continue;
446: best_prio = prio;
447: resp = res + i;
448: }
1.1 kristaps 449: }
450:
1.95 schwarze 451: /*
452: * For man(1), -a and -i output mode, fall through
453: * to the main mandoc(1) code iterating files
454: * and running the parsers on each of them.
455: */
456:
457: if (outmode == OUTMODE_FLN || outmode == OUTMODE_LST)
458: goto out;
459: }
460:
461: /* mandoc(1) */
1.157 schwarze 462:
1.167 schwarze 463: if (use_pager) {
464: if (pledge("stdio rpath tmppath tty proc exec", NULL) == -1)
465: err((int)MANDOCLEVEL_SYSERR, "pledge");
466: } else {
467: if (pledge("stdio rpath", NULL) == -1)
468: err((int)MANDOCLEVEL_SYSERR, "pledge");
469: }
1.95 schwarze 470:
1.189 schwarze 471: if (search.argmode == ARG_FILE)
472: moptions(&options, auxpaths);
1.146 schwarze 473:
1.155 schwarze 474: mchars_alloc();
1.215 schwarze 475: curp.mp = mparse_alloc(options, curp.os_e, curp.os_s);
1.76 schwarze 476:
1.124 schwarze 477: if (argc < 1) {
1.219 schwarze 478: if (use_pager) {
1.149 schwarze 479: tag_files = tag_init();
1.219 schwarze 480: tag_files->tagname = conf.output.tag;
481: }
1.215 schwarze 482: thisarg = "<stdin>";
483: mandoc_msg_setinfilename(thisarg);
484: parse(&curp, STDIN_FILENO, thisarg);
485: mandoc_msg_setinfilename(NULL);
1.118 schwarze 486: }
1.27 schwarze 487:
1.208 schwarze 488: /*
489: * Remember the original working directory, if possible.
490: * This will be needed if some names on the command line
491: * are page names and some are relative file names.
492: * Do not error out if the current directory is not
493: * readable: Maybe it won't be needed after all.
494: */
495: startdir = open(".", O_RDONLY | O_DIRECTORY);
496:
1.124 schwarze 497: while (argc > 0) {
1.208 schwarze 498:
499: /*
500: * Changing directories is not needed in ARG_FILE mode.
501: * Do it on a best-effort basis. Even in case of
502: * failure, some functionality may still work.
503: */
504: if (resp != NULL) {
505: if (resp->ipath != SIZE_MAX)
506: (void)chdir(conf.manpath.paths[resp->ipath]);
507: else if (startdir != -1)
508: (void)fchdir(startdir);
1.215 schwarze 509: thisarg = resp->file;
510: } else
511: thisarg = *argv;
1.208 schwarze 512:
1.215 schwarze 513: fd = mparse_open(curp.mp, thisarg);
1.118 schwarze 514: if (fd != -1) {
1.149 schwarze 515: if (use_pager) {
1.212 schwarze 516: use_pager = 0;
1.149 schwarze 517: tag_files = tag_init();
1.219 schwarze 518: tag_files->tagname = conf.output.tag;
1.149 schwarze 519: }
1.118 schwarze 520:
1.217 schwarze 521: mandoc_msg_setinfilename(thisarg);
1.215 schwarze 522: if (resp == NULL || resp->form == FORM_SRC)
523: parse(&curp, fd, thisarg);
1.208 schwarze 524: else
1.135 schwarze 525: passthrough(resp->file, fd,
526: conf.output.synopsisonly);
1.217 schwarze 527: mandoc_msg_setinfilename(NULL);
1.205 schwarze 528:
529: if (ferror(stdout)) {
530: if (tag_files != NULL) {
531: warn("%s", tag_files->ofn);
532: tag_unlink();
533: tag_files = NULL;
534: } else
535: warn("stdout");
1.215 schwarze 536: mandoc_msg_setrc(MANDOCLEVEL_SYSERR);
1.205 schwarze 537: break;
538: }
1.118 schwarze 539:
1.179 schwarze 540: if (argc > 1 && curp.outtype <= OUTT_UTF8) {
541: if (curp.outdata == NULL)
542: outdata_alloc(&curp);
1.173 schwarze 543: terminal_sepline(curp.outdata);
1.179 schwarze 544: }
1.217 schwarze 545: } else
546: mandoc_msg(MANDOCERR_FILE, 0, 0,
1.221 schwarze 547: "%s: %s", thisarg, strerror(errno));
1.100 schwarze 548:
1.215 schwarze 549: if (curp.wstop && mandoc_msg_getrc() != MANDOCLEVEL_OK)
1.27 schwarze 550: break;
1.116 schwarze 551:
1.118 schwarze 552: if (resp != NULL)
553: resp++;
554: else
555: argv++;
556: if (--argc)
557: mparse_reset(curp.mp);
1.1 kristaps 558: }
1.208 schwarze 559: if (startdir != -1) {
560: (void)fchdir(startdir);
561: close(startdir);
562: }
1.1 kristaps 563:
1.160 schwarze 564: if (curp.outdata != NULL) {
565: switch (curp.outtype) {
566: case OUTT_HTML:
567: html_free(curp.outdata);
568: break;
569: case OUTT_UTF8:
570: case OUTT_LOCALE:
571: case OUTT_ASCII:
572: ascii_free(curp.outdata);
573: break;
574: case OUTT_PDF:
575: case OUTT_PS:
576: pspdf_free(curp.outdata);
577: break;
578: default:
579: break;
580: }
1.158 schwarze 581: }
1.197 schwarze 582: mandoc_xr_free();
1.102 schwarze 583: mparse_free(curp.mp);
1.155 schwarze 584: mchars_free();
1.95 schwarze 585:
586: out:
587: if (search.argmode != ARG_FILE) {
1.134 schwarze 588: manconf_free(&conf);
1.95 schwarze 589: mansearch_free(res, sz);
590: }
591:
1.196 schwarze 592: free(curp.os_s);
1.1 kristaps 593:
1.129 schwarze 594: /*
1.149 schwarze 595: * When using a pager, finish writing both temporary files,
596: * fork it, wait for the user to close it, and clean up.
1.129 schwarze 597: */
598:
1.149 schwarze 599: if (tag_files != NULL) {
1.130 schwarze 600: fclose(stdout);
1.144 schwarze 601: tag_write();
1.166 schwarze 602: man_pgid = getpgid(0);
603: tag_files->tcpgid = man_pgid == getpid() ?
604: getpgid(getppid()) : man_pgid;
605: pager_pid = 0;
606: signum = SIGSTOP;
1.165 schwarze 607: for (;;) {
1.166 schwarze 608:
609: /* Stop here until moved to the foreground. */
610:
1.182 schwarze 611: tc_pgid = tcgetpgrp(tag_files->ofd);
1.166 schwarze 612: if (tc_pgid != man_pgid) {
613: if (tc_pgid == pager_pid) {
1.182 schwarze 614: (void)tcsetpgrp(tag_files->ofd,
1.166 schwarze 615: man_pgid);
616: if (signum == SIGTTIN)
617: continue;
618: } else
619: tag_files->tcpgid = tc_pgid;
620: kill(0, signum);
621: continue;
622: }
623:
624: /* Once in the foreground, activate the pager. */
625:
626: if (pager_pid) {
1.182 schwarze 627: (void)tcsetpgrp(tag_files->ofd, pager_pid);
1.166 schwarze 628: kill(pager_pid, SIGCONT);
629: } else
630: pager_pid = spawn_pager(tag_files);
631:
632: /* Wait for the pager to stop or exit. */
633:
634: while ((pid = waitpid(pager_pid, &status,
635: WUNTRACED)) == -1 && errno == EINTR)
636: continue;
637:
638: if (pid == -1) {
1.165 schwarze 639: warn("wait");
1.215 schwarze 640: mandoc_msg_setrc(MANDOCLEVEL_SYSERR);
1.165 schwarze 641: break;
642: }
643: if (!WIFSTOPPED(status))
644: break;
645:
1.166 schwarze 646: signum = WSTOPSIG(status);
1.165 schwarze 647: }
1.144 schwarze 648: tag_unlink();
1.130 schwarze 649: }
1.215 schwarze 650: return (int)mandoc_msg_getrc();
1.1 kristaps 651: }
652:
1.20 schwarze 653: static void
1.95 schwarze 654: usage(enum argmode argmode)
1.1 kristaps 655: {
656:
1.95 schwarze 657: switch (argmode) {
658: case ARG_FILE:
1.190 schwarze 659: fputs("usage: mandoc [-ac] [-I os=name] "
660: "[-K encoding] [-mdoc | -man] [-O options]\n"
1.133 schwarze 661: "\t [-T output] [-W level] [file ...]\n", stderr);
1.95 schwarze 662: break;
663: case ARG_NAME:
1.190 schwarze 664: fputs("usage: man [-acfhklw] [-C file] [-M path] "
665: "[-m path] [-S subsection]\n"
666: "\t [[-s] section] name ...\n", stderr);
1.95 schwarze 667: break;
668: case ARG_WORD:
1.190 schwarze 669: fputs("usage: whatis [-afk] [-C file] "
1.96 schwarze 670: "[-M path] [-m path] [-O outkey] [-S arch]\n"
671: "\t [-s section] name ...\n", stderr);
1.95 schwarze 672: break;
673: case ARG_EXPR:
1.190 schwarze 674: fputs("usage: apropos [-afk] [-C file] "
1.96 schwarze 675: "[-M path] [-m path] [-O outkey] [-S arch]\n"
1.95 schwarze 676: "\t [-s section] expression ...\n", stderr);
677: break;
678: }
1.47 schwarze 679: exit((int)MANDOCLEVEL_BADARG);
1.119 schwarze 680: }
681:
682: static int
683: fs_lookup(const struct manpaths *paths, size_t ipath,
684: const char *sec, const char *arch, const char *name,
685: struct manpage **res, size_t *ressz)
686: {
1.228 ! schwarze 687: struct stat sb;
1.127 schwarze 688: glob_t globinfo;
1.119 schwarze 689: struct manpage *page;
690: char *file;
1.177 schwarze 691: int globres;
692: enum form form;
1.119 schwarze 693:
1.127 schwarze 694: form = FORM_SRC;
1.119 schwarze 695: mandoc_asprintf(&file, "%s/man%s/%s.%s",
696: paths->paths[ipath], sec, name, sec);
1.228 ! schwarze 697: if (stat(file, &sb) != -1)
1.119 schwarze 698: goto found;
699: free(file);
700:
701: mandoc_asprintf(&file, "%s/cat%s/%s.0",
702: paths->paths[ipath], sec, name);
1.228 ! schwarze 703: if (stat(file, &sb) != -1) {
1.119 schwarze 704: form = FORM_CAT;
705: goto found;
706: }
707: free(file);
708:
709: if (arch != NULL) {
710: mandoc_asprintf(&file, "%s/man%s/%s/%s.%s",
711: paths->paths[ipath], sec, arch, name, sec);
1.228 ! schwarze 712: if (stat(file, &sb) != -1)
1.119 schwarze 713: goto found;
714: free(file);
715: }
1.127 schwarze 716:
1.145 schwarze 717: mandoc_asprintf(&file, "%s/man%s/%s.[01-9]*",
1.127 schwarze 718: paths->paths[ipath], sec, name);
719: globres = glob(file, 0, NULL, &globinfo);
720: if (globres != 0 && globres != GLOB_NOMATCH)
1.152 schwarze 721: warn("%s: glob", file);
1.127 schwarze 722: free(file);
723: if (globres == 0)
724: file = mandoc_strdup(*globinfo.gl_pathv);
725: globfree(&globinfo);
1.228 ! schwarze 726: if (globres == 0) {
! 727: if (stat(file, &sb) != -1)
! 728: goto found;
! 729: free(file);
! 730: }
1.199 schwarze 731: if (res != NULL || ipath + 1 != paths->sz)
1.150 schwarze 732: return 0;
1.119 schwarze 733:
1.199 schwarze 734: mandoc_asprintf(&file, "%s.%s", name, sec);
1.228 ! schwarze 735: globres = stat(file, &sb);
1.199 schwarze 736: free(file);
737: return globres != -1;
738:
1.119 schwarze 739: found:
1.152 schwarze 740: warnx("outdated mandoc.db lacks %s(%s) entry, run makewhatis %s",
741: name, sec, paths->paths[ipath]);
1.199 schwarze 742: if (res == NULL) {
743: free(file);
1.198 schwarze 744: return 1;
1.199 schwarze 745: }
1.119 schwarze 746: *res = mandoc_reallocarray(*res, ++*ressz, sizeof(struct manpage));
747: page = *res + (*ressz - 1);
748: page->file = file;
749: page->names = NULL;
750: page->output = NULL;
1.225 schwarze 751: page->bits = NAME_FILE & NAME_MASK;
1.119 schwarze 752: page->ipath = ipath;
753: page->sec = (*sec >= '1' && *sec <= '9') ? *sec - '1' + 1 : 10;
754: page->form = form;
1.150 schwarze 755: return 1;
1.119 schwarze 756: }
757:
1.198 schwarze 758: static int
1.119 schwarze 759: fs_search(const struct mansearch *cfg, const struct manpaths *paths,
760: int argc, char **argv, struct manpage **res, size_t *ressz)
761: {
762: const char *const sections[] =
1.171 schwarze 763: {"1", "8", "6", "2", "3", "5", "7", "4", "9", "3p"};
1.119 schwarze 764: const size_t nsec = sizeof(sections)/sizeof(sections[0]);
765:
766: size_t ipath, isec, lastsz;
767:
768: assert(cfg->argmode == ARG_NAME);
769:
1.198 schwarze 770: if (res != NULL)
771: *res = NULL;
1.119 schwarze 772: *ressz = lastsz = 0;
773: while (argc) {
774: for (ipath = 0; ipath < paths->sz; ipath++) {
775: if (cfg->sec != NULL) {
776: if (fs_lookup(paths, ipath, cfg->sec,
777: cfg->arch, *argv, res, ressz) &&
778: cfg->firstmatch)
1.198 schwarze 779: return 1;
1.119 schwarze 780: } else for (isec = 0; isec < nsec; isec++)
781: if (fs_lookup(paths, ipath, sections[isec],
782: cfg->arch, *argv, res, ressz) &&
783: cfg->firstmatch)
1.198 schwarze 784: return 1;
1.119 schwarze 785: }
1.208 schwarze 786: if (res != NULL && *ressz == lastsz &&
1.210 schwarze 787: strchr(*argv, '/') == NULL) {
1.223 schwarze 788: if (cfg->arch != NULL &&
789: arch_valid(cfg->arch, MANDOC_OS_OPENBSD) == 0)
790: warnx("Unknown architecture \"%s\".",
791: cfg->arch);
792: else if (cfg->sec == NULL)
1.210 schwarze 793: warnx("No entry for %s in the manual.",
794: *argv);
795: else
796: warnx("No entry for %s in section %s "
797: "of the manual.", *argv, cfg->sec);
798: }
1.119 schwarze 799: lastsz = *ressz;
800: argv++;
801: argc--;
802: }
1.198 schwarze 803: return 0;
1.1 kristaps 804: }
805:
1.27 schwarze 806: static void
1.132 schwarze 807: parse(struct curparse *curp, int fd, const char *file)
1.52 schwarze 808: {
1.218 schwarze 809: struct roff_meta *meta;
1.52 schwarze 810:
1.76 schwarze 811: /* Begin by parsing the file itself. */
1.52 schwarze 812:
1.76 schwarze 813: assert(file);
1.170 florian 814: assert(fd >= 0);
1.52 schwarze 815:
1.215 schwarze 816: mparse_readfd(curp->mp, fd, file);
1.168 schwarze 817: if (fd != STDIN_FILENO)
818: close(fd);
1.1 kristaps 819:
1.51 schwarze 820: /*
1.76 schwarze 821: * With -Wstop and warnings or errors of at least the requested
822: * level, do not produce output.
1.51 schwarze 823: */
824:
1.215 schwarze 825: if (curp->wstop && mandoc_msg_getrc() != MANDOCLEVEL_OK)
1.132 schwarze 826: return;
1.51 schwarze 827:
1.179 schwarze 828: if (curp->outdata == NULL)
829: outdata_alloc(curp);
1.222 schwarze 830: else if (curp->outtype == OUTT_HTML)
831: html_reset(curp);
1.51 schwarze 832:
1.218 schwarze 833: mandoc_xr_reset();
834: meta = mparse_result(curp->mp);
1.158 schwarze 835:
836: /* Execute the out device, if it exists. */
837:
1.218 schwarze 838: if (meta->macroset == MACROSET_MDOC) {
1.51 schwarze 839: switch (curp->outtype) {
1.90 schwarze 840: case OUTT_HTML:
1.218 schwarze 841: html_mdoc(curp->outdata, meta);
1.51 schwarze 842: break;
1.90 schwarze 843: case OUTT_TREE:
1.218 schwarze 844: tree_mdoc(curp->outdata, meta);
1.51 schwarze 845: break;
1.90 schwarze 846: case OUTT_MAN:
1.218 schwarze 847: man_mdoc(curp->outdata, meta);
1.78 schwarze 848: break;
1.90 schwarze 849: case OUTT_PDF:
850: case OUTT_ASCII:
851: case OUTT_UTF8:
852: case OUTT_LOCALE:
853: case OUTT_PS:
1.218 schwarze 854: terminal_mdoc(curp->outdata, meta);
1.158 schwarze 855: break;
1.188 schwarze 856: case OUTT_MARKDOWN:
1.218 schwarze 857: markdown_mdoc(curp->outdata, meta);
1.188 schwarze 858: break;
1.158 schwarze 859: default:
860: break;
861: }
862: }
1.218 schwarze 863: if (meta->macroset == MACROSET_MAN) {
1.158 schwarze 864: switch (curp->outtype) {
865: case OUTT_HTML:
1.218 schwarze 866: html_man(curp->outdata, meta);
1.158 schwarze 867: break;
868: case OUTT_TREE:
1.218 schwarze 869: tree_man(curp->outdata, meta);
1.158 schwarze 870: break;
871: case OUTT_MAN:
1.211 schwarze 872: mparse_copy(curp->mp);
1.158 schwarze 873: break;
874: case OUTT_PDF:
875: case OUTT_ASCII:
876: case OUTT_UTF8:
877: case OUTT_LOCALE:
878: case OUTT_PS:
1.218 schwarze 879: terminal_man(curp->outdata, meta);
1.51 schwarze 880: break;
881: default:
882: break;
883: }
1.179 schwarze 884: }
1.215 schwarze 885: if (mandoc_msg_getmin() < MANDOCERR_STYLE)
886: check_xr();
1.197 schwarze 887: }
888:
889: static void
1.215 schwarze 890: check_xr(void)
1.197 schwarze 891: {
892: static struct manpaths paths;
893: struct mansearch search;
894: struct mandoc_xr *xr;
895: size_t sz;
896:
897: if (paths.sz == 0)
898: manpath_base(&paths);
899:
900: for (xr = mandoc_xr_get(); xr != NULL; xr = xr->next) {
1.200 schwarze 901: if (xr->line == -1)
902: continue;
1.197 schwarze 903: search.arch = NULL;
904: search.sec = xr->sec;
905: search.outkey = NULL;
906: search.argmode = ARG_NAME;
907: search.firstmatch = 1;
908: if (mansearch(&search, &paths, 1, &xr->name, NULL, &sz))
1.198 schwarze 909: continue;
910: if (fs_search(&search, &paths, 1, &xr->name, NULL, &sz))
1.197 schwarze 911: continue;
1.201 schwarze 912: if (xr->count == 1)
1.216 schwarze 913: mandoc_msg(MANDOCERR_XR_BAD, xr->line,
914: xr->pos + 1, "Xr %s %s", xr->name, xr->sec);
1.201 schwarze 915: else
1.216 schwarze 916: mandoc_msg(MANDOCERR_XR_BAD, xr->line,
917: xr->pos + 1, "Xr %s %s (%d times)",
1.201 schwarze 918: xr->name, xr->sec, xr->count);
1.197 schwarze 919: }
1.179 schwarze 920: }
921:
922: static void
923: outdata_alloc(struct curparse *curp)
924: {
925: switch (curp->outtype) {
926: case OUTT_HTML:
927: curp->outdata = html_alloc(curp->outopts);
928: break;
929: case OUTT_UTF8:
930: curp->outdata = utf8_alloc(curp->outopts);
931: break;
932: case OUTT_LOCALE:
933: curp->outdata = locale_alloc(curp->outopts);
934: break;
935: case OUTT_ASCII:
936: curp->outdata = ascii_alloc(curp->outopts);
937: break;
938: case OUTT_PDF:
939: curp->outdata = pdf_alloc(curp->outopts);
940: break;
941: case OUTT_PS:
942: curp->outdata = ps_alloc(curp->outopts);
943: break;
944: default:
945: break;
1.51 schwarze 946: }
1.1 kristaps 947: }
948:
1.132 schwarze 949: static void
1.105 schwarze 950: passthrough(const char *file, int fd, int synopsis_only)
1.95 schwarze 951: {
1.105 schwarze 952: const char synb[] = "S\bSY\bYN\bNO\bOP\bPS\bSI\bIS\bS";
953: const char synr[] = "SYNOPSIS";
954:
955: FILE *stream;
1.95 schwarze 956: const char *syscall;
1.164 schwarze 957: char *line, *cp;
958: size_t linesz;
1.180 schwarze 959: ssize_t len, written;
1.105 schwarze 960: int print;
1.116 schwarze 961:
1.164 schwarze 962: line = NULL;
963: linesz = 0;
1.105 schwarze 964:
1.180 schwarze 965: if (fflush(stdout) == EOF) {
966: syscall = "fflush";
967: goto fail;
968: }
969:
1.105 schwarze 970: if ((stream = fdopen(fd, "r")) == NULL) {
971: close(fd);
972: syscall = "fdopen";
973: goto fail;
974: }
1.95 schwarze 975:
1.105 schwarze 976: print = 0;
1.180 schwarze 977: while ((len = getline(&line, &linesz, stream)) != -1) {
1.164 schwarze 978: cp = line;
1.105 schwarze 979: if (synopsis_only) {
980: if (print) {
1.164 schwarze 981: if ( ! isspace((unsigned char)*cp))
1.105 schwarze 982: goto done;
1.180 schwarze 983: while (isspace((unsigned char)*cp)) {
1.164 schwarze 984: cp++;
1.180 schwarze 985: len--;
986: }
1.105 schwarze 987: } else {
1.164 schwarze 988: if (strcmp(cp, synb) == 0 ||
989: strcmp(cp, synr) == 0)
1.105 schwarze 990: print = 1;
991: continue;
992: }
993: }
1.180 schwarze 994: for (; len > 0; len -= written) {
995: if ((written = write(STDOUT_FILENO, cp, len)) != -1)
996: continue;
1.164 schwarze 997: fclose(stream);
1.180 schwarze 998: syscall = "write";
1.164 schwarze 999: goto fail;
1000: }
1.105 schwarze 1001: }
1.95 schwarze 1002:
1.105 schwarze 1003: if (ferror(stream)) {
1004: fclose(stream);
1.164 schwarze 1005: syscall = "getline";
1.105 schwarze 1006: goto fail;
1007: }
1.101 schwarze 1008:
1.105 schwarze 1009: done:
1.164 schwarze 1010: free(line);
1.105 schwarze 1011: fclose(stream);
1.132 schwarze 1012: return;
1.95 schwarze 1013:
1014: fail:
1.164 schwarze 1015: free(line);
1.152 schwarze 1016: warn("%s: SYSERR: %s", file, syscall);
1.215 schwarze 1017: mandoc_msg_setrc(MANDOCLEVEL_SYSERR);
1.103 schwarze 1018: }
1019:
1020: static int
1021: koptions(int *options, char *arg)
1022: {
1023:
1024: if ( ! strcmp(arg, "utf-8")) {
1025: *options |= MPARSE_UTF8;
1026: *options &= ~MPARSE_LATIN1;
1027: } else if ( ! strcmp(arg, "iso-8859-1")) {
1028: *options |= MPARSE_LATIN1;
1029: *options &= ~MPARSE_UTF8;
1030: } else if ( ! strcmp(arg, "us-ascii")) {
1031: *options &= ~(MPARSE_UTF8 | MPARSE_LATIN1);
1032: } else {
1.152 schwarze 1033: warnx("-K %s: Bad argument", arg);
1.150 schwarze 1034: return 0;
1.103 schwarze 1035: }
1.150 schwarze 1036: return 1;
1.95 schwarze 1037: }
1038:
1.189 schwarze 1039: static void
1.87 schwarze 1040: moptions(int *options, char *arg)
1.1 kristaps 1041: {
1042:
1.95 schwarze 1043: if (arg == NULL)
1.189 schwarze 1044: return;
1045: if (strcmp(arg, "doc") == 0)
1.87 schwarze 1046: *options |= MPARSE_MDOC;
1.189 schwarze 1047: else if (strcmp(arg, "an") == 0)
1.87 schwarze 1048: *options |= MPARSE_MAN;
1.1 kristaps 1049: }
1050:
1051: static int
1.22 schwarze 1052: toptions(struct curparse *curp, char *arg)
1.1 kristaps 1053: {
1054:
1055: if (0 == strcmp(arg, "ascii"))
1.22 schwarze 1056: curp->outtype = OUTT_ASCII;
1057: else if (0 == strcmp(arg, "lint")) {
1058: curp->outtype = OUTT_LINT;
1.215 schwarze 1059: mandoc_msg_setoutfile(stdout);
1060: mandoc_msg_setmin(MANDOCERR_BASE);
1.76 schwarze 1061: } else if (0 == strcmp(arg, "tree"))
1.22 schwarze 1062: curp->outtype = OUTT_TREE;
1.78 schwarze 1063: else if (0 == strcmp(arg, "man"))
1064: curp->outtype = OUTT_MAN;
1.17 schwarze 1065: else if (0 == strcmp(arg, "html"))
1.22 schwarze 1066: curp->outtype = OUTT_HTML;
1.188 schwarze 1067: else if (0 == strcmp(arg, "markdown"))
1068: curp->outtype = OUTT_MARKDOWN;
1.77 schwarze 1069: else if (0 == strcmp(arg, "utf8"))
1070: curp->outtype = OUTT_UTF8;
1071: else if (0 == strcmp(arg, "locale"))
1072: curp->outtype = OUTT_LOCALE;
1.36 schwarze 1073: else if (0 == strcmp(arg, "ps"))
1074: curp->outtype = OUTT_PS;
1.43 schwarze 1075: else if (0 == strcmp(arg, "pdf"))
1076: curp->outtype = OUTT_PDF;
1.1 kristaps 1077: else {
1.152 schwarze 1078: warnx("-T %s: Bad argument", arg);
1.150 schwarze 1079: return 0;
1.1 kristaps 1080: }
1081:
1.150 schwarze 1082: return 1;
1.1 kristaps 1083: }
1084:
1085: static int
1.45 schwarze 1086: woptions(struct curparse *curp, char *arg)
1.1 kristaps 1087: {
1.10 schwarze 1088: char *v, *o;
1.196 schwarze 1089: const char *toks[11];
1.1 kristaps 1090:
1.45 schwarze 1091: toks[0] = "stop";
1092: toks[1] = "all";
1.196 schwarze 1093: toks[2] = "base";
1094: toks[3] = "style";
1095: toks[4] = "warning";
1096: toks[5] = "error";
1097: toks[6] = "unsupp";
1098: toks[7] = "fatal";
1099: toks[8] = "openbsd";
1100: toks[9] = "netbsd";
1101: toks[10] = NULL;
1.1 kristaps 1102:
1.10 schwarze 1103: while (*arg) {
1104: o = arg;
1.176 schwarze 1105: switch (getsubopt(&arg, (char * const *)toks, &v)) {
1.90 schwarze 1106: case 0:
1.45 schwarze 1107: curp->wstop = 1;
1.1 kristaps 1108: break;
1.90 schwarze 1109: case 1:
1110: case 2:
1.215 schwarze 1111: mandoc_msg_setmin(MANDOCERR_BASE);
1.193 schwarze 1112: break;
1113: case 3:
1.215 schwarze 1114: mandoc_msg_setmin(MANDOCERR_STYLE);
1.1 kristaps 1115: break;
1.193 schwarze 1116: case 4:
1.215 schwarze 1117: mandoc_msg_setmin(MANDOCERR_WARNING);
1.1 kristaps 1118: break;
1.193 schwarze 1119: case 5:
1.215 schwarze 1120: mandoc_msg_setmin(MANDOCERR_ERROR);
1.123 schwarze 1121: break;
1.193 schwarze 1122: case 6:
1.215 schwarze 1123: mandoc_msg_setmin(MANDOCERR_UNSUPP);
1.196 schwarze 1124: break;
1125: case 7:
1.215 schwarze 1126: mandoc_msg_setmin(MANDOCERR_MAX);
1.196 schwarze 1127: break;
1128: case 8:
1.215 schwarze 1129: mandoc_msg_setmin(MANDOCERR_BASE);
1.196 schwarze 1130: curp->os_e = MANDOC_OS_OPENBSD;
1131: break;
1132: case 9:
1.215 schwarze 1133: mandoc_msg_setmin(MANDOCERR_BASE);
1.196 schwarze 1134: curp->os_e = MANDOC_OS_NETBSD;
1.19 schwarze 1135: break;
1.1 kristaps 1136: default:
1.152 schwarze 1137: warnx("-W %s: Bad argument", o);
1.150 schwarze 1138: return 0;
1.1 kristaps 1139: }
1.10 schwarze 1140: }
1.150 schwarze 1141: return 1;
1.95 schwarze 1142: }
1143:
1.130 schwarze 1144: static pid_t
1.149 schwarze 1145: spawn_pager(struct tag_files *tag_files)
1.95 schwarze 1146: {
1.172 schwarze 1147: const struct timespec timeout = { 0, 100000000 }; /* 0.1s */
1.95 schwarze 1148: #define MAX_PAGER_ARGS 16
1149: char *argv[MAX_PAGER_ARGS];
1150: const char *pager;
1151: char *cp;
1.144 schwarze 1152: size_t cmdlen;
1.212 schwarze 1153: int argc, use_ofn;
1.130 schwarze 1154: pid_t pager_pid;
1.95 schwarze 1155:
1.144 schwarze 1156: pager = getenv("MANPAGER");
1157: if (pager == NULL || *pager == '\0')
1158: pager = getenv("PAGER");
1159: if (pager == NULL || *pager == '\0')
1160: pager = "more -s";
1161: cp = mandoc_strdup(pager);
1162:
1163: /*
1164: * Parse the pager command into words.
1165: * Intentionally do not do anything fancy here.
1166: */
1167:
1168: argc = 0;
1.212 schwarze 1169: while (argc + 5 < MAX_PAGER_ARGS) {
1.144 schwarze 1170: argv[argc++] = cp;
1171: cp = strchr(cp, ' ');
1172: if (cp == NULL)
1173: break;
1174: *cp++ = '\0';
1175: while (*cp == ' ')
1176: cp++;
1177: if (*cp == '\0')
1178: break;
1179: }
1180:
1.149 schwarze 1181: /* For more(1) and less(1), use the tag file. */
1.144 schwarze 1182:
1.212 schwarze 1183: use_ofn = 1;
1.149 schwarze 1184: if ((cmdlen = strlen(argv[0])) >= 4) {
1.144 schwarze 1185: cp = argv[0] + cmdlen - 4;
1.149 schwarze 1186: if (strcmp(cp, "less") == 0 || strcmp(cp, "more") == 0) {
1187: argv[argc++] = mandoc_strdup("-T");
1188: argv[argc++] = tag_files->tfn;
1.212 schwarze 1189: if (tag_files->tagname != NULL) {
1190: argv[argc++] = mandoc_strdup("-t");
1191: argv[argc++] = tag_files->tagname;
1192: use_ofn = 0;
1193: }
1.149 schwarze 1194: }
1.144 schwarze 1195: }
1.212 schwarze 1196: if (use_ofn)
1197: argv[argc++] = tag_files->ofn;
1.144 schwarze 1198: argv[argc] = NULL;
1199:
1.130 schwarze 1200: switch (pager_pid = fork()) {
1.95 schwarze 1201: case -1:
1.152 schwarze 1202: err((int)MANDOCLEVEL_SYSERR, "fork");
1.95 schwarze 1203: case 0:
1.129 schwarze 1204: break;
1205: default:
1.165 schwarze 1206: (void)setpgid(pager_pid, 0);
1.182 schwarze 1207: (void)tcsetpgrp(tag_files->ofd, pager_pid);
1.165 schwarze 1208: if (pledge("stdio rpath tmppath tty proc", NULL) == -1)
1.163 schwarze 1209: err((int)MANDOCLEVEL_SYSERR, "pledge");
1.166 schwarze 1210: tag_files->pager_pid = pager_pid;
1.150 schwarze 1211: return pager_pid;
1.95 schwarze 1212: }
1213:
1.129 schwarze 1214: /* The child process becomes the pager. */
1.95 schwarze 1215:
1.152 schwarze 1216: if (dup2(tag_files->ofd, STDOUT_FILENO) == -1)
1217: err((int)MANDOCLEVEL_SYSERR, "pager stdout");
1.149 schwarze 1218: close(tag_files->ofd);
1.206 tb 1219: assert(tag_files->tfd == -1);
1.172 schwarze 1220:
1221: /* Do not start the pager before controlling the terminal. */
1222:
1.182 schwarze 1223: while (tcgetpgrp(STDOUT_FILENO) != getpid())
1.172 schwarze 1224: nanosleep(&timeout, NULL);
1225:
1.95 schwarze 1226: execvp(argv[0], argv);
1.152 schwarze 1227: err((int)MANDOCLEVEL_SYSERR, "exec %s", argv[0]);
1.30 schwarze 1228: }
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