Annotation of mandoc/main.c, Revision 1.304
1.304 ! schwarze 1: /* $Id: main.c,v 1.303 2018/02/23 16:47:10 schwarze Exp $ */
1.1 kristaps 2: /*
1.183 schwarze 3: * Copyright (c) 2008-2012 Kristaps Dzonsons <kristaps@bsd.lv>
1.304 ! schwarze 4: * Copyright (c) 2010-2012, 2014-2018 Ingo Schwarze <schwarze@openbsd.org>
1.169 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
1.25 kristaps 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: *
1.229 schwarze 11: * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHORS DISCLAIM ALL WARRANTIES
1.25 kristaps 12: * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
1.229 schwarze 13: * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR
1.25 kristaps 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: */
1.58 kristaps 19: #include "config.h"
1.178 schwarze 20:
21: #include <sys/types.h>
1.304 ! schwarze 22: #include <sys/ioctl.h>
1.216 schwarze 23: #include <sys/param.h> /* MACHINE */
1.304 ! schwarze 24: #include <sys/termios.h>
1.224 schwarze 25: #include <sys/wait.h>
1.58 kristaps 26:
1.1 kristaps 27: #include <assert.h>
1.185 schwarze 28: #include <ctype.h>
1.256 schwarze 29: #if HAVE_ERR
1.247 schwarze 30: #include <err.h>
1.256 schwarze 31: #endif
1.258 schwarze 32: #include <errno.h>
1.186 schwarze 33: #include <fcntl.h>
1.222 schwarze 34: #include <glob.h>
1.269 kristaps 35: #if HAVE_SANDBOX_INIT
36: #include <sandbox.h>
37: #endif
1.226 schwarze 38: #include <signal.h>
1.1 kristaps 39: #include <stdio.h>
1.45 kristaps 40: #include <stdint.h>
1.1 kristaps 41: #include <stdlib.h>
42: #include <string.h>
1.265 schwarze 43: #include <time.h>
1.1 kristaps 44: #include <unistd.h>
45:
1.231 schwarze 46: #include "mandoc_aux.h"
1.71 kristaps 47: #include "mandoc.h"
1.294 schwarze 48: #include "mandoc_xr.h"
1.231 schwarze 49: #include "roff.h"
1.1 kristaps 50: #include "mdoc.h"
1.10 kristaps 51: #include "man.h"
1.239 schwarze 52: #include "tag.h"
1.231 schwarze 53: #include "main.h"
1.229 schwarze 54: #include "manconf.h"
1.180 schwarze 55: #include "mansearch.h"
1.16 kristaps 56:
1.181 schwarze 57: enum outmode {
58: OUTMODE_DEF = 0,
59: OUTMODE_FLN,
60: OUTMODE_LST,
61: OUTMODE_ALL,
62: OUTMODE_ONE
63: };
64:
1.19 kristaps 65: enum outt {
1.154 kristaps 66: OUTT_ASCII = 0, /* -Tascii */
1.162 kristaps 67: OUTT_LOCALE, /* -Tlocale */
1.163 kristaps 68: OUTT_UTF8, /* -Tutf8 */
1.154 kristaps 69: OUTT_TREE, /* -Ttree */
1.164 schwarze 70: OUTT_MAN, /* -Tman */
1.154 kristaps 71: OUTT_HTML, /* -Thtml */
1.285 schwarze 72: OUTT_MARKDOWN, /* -Tmarkdown */
1.154 kristaps 73: OUTT_LINT, /* -Tlint */
74: OUTT_PS, /* -Tps */
75: OUTT_PDF /* -Tpdf */
1.19 kristaps 76: };
77:
1.5 kristaps 78: struct curparse {
1.154 kristaps 79: struct mparse *mp;
1.293 schwarze 80: struct manoutput *outopts; /* output options */
81: void *outdata; /* data for output */
82: char *os_s; /* operating system for display */
1.148 kristaps 83: int wstop; /* stop after a file with a warning */
1.293 schwarze 84: enum mandocerr mmin; /* ignore messages below this */
85: enum mandoc_os os_e; /* check base system conventions */
1.173 schwarze 86: enum outt outtype; /* which output to use */
1.79 kristaps 87: };
1.270 schwarze 88:
89:
90: int mandocdb(int, char *[]);
1.79 kristaps 91:
1.294 schwarze 92: static void check_xr(const char *);
1.213 schwarze 93: static int fs_lookup(const struct manpaths *,
94: size_t ipath, const char *,
95: const char *, const char *,
96: struct manpage **, size_t *);
1.295 schwarze 97: static int fs_search(const struct mansearch *,
1.213 schwarze 98: const struct manpaths *, int, char**,
99: struct manpage **, size_t *);
1.194 schwarze 100: static int koptions(int *, char *);
1.286 schwarze 101: static void moptions(int *, char *);
1.155 kristaps 102: static void mmsg(enum mandocerr, enum mandoclevel,
103: const char *, int, int, const char *);
1.276 schwarze 104: static void outdata_alloc(struct curparse *);
1.227 schwarze 105: static void parse(struct curparse *, int, const char *);
106: static void passthrough(const char *, int, int);
1.244 schwarze 107: static pid_t spawn_pager(struct tag_files *);
1.66 kristaps 108: static int toptions(struct curparse *, char *);
1.283 schwarze 109: static void usage(enum argmode) __attribute__((__noreturn__));
1.103 schwarze 110: static int woptions(struct curparse *, char *);
1.1 kristaps 111:
1.182 schwarze 112: static const int sec_prios[] = {1, 4, 5, 8, 6, 3, 7, 2, 9};
1.202 schwarze 113: static char help_arg[] = "help";
114: static char *help_argv[] = {help_arg, NULL};
1.226 schwarze 115: static enum mandoclevel rc;
1.300 schwarze 116: static FILE *mmsg_stream;
1.1 kristaps 117:
1.173 schwarze 118:
1.1 kristaps 119: int
120: main(int argc, char *argv[])
121: {
1.229 schwarze 122: struct manconf conf;
1.282 schwarze 123: struct mansearch search;
1.5 kristaps 124: struct curparse curp;
1.304 ! schwarze 125: struct winsize ws;
1.244 schwarze 126: struct tag_files *tag_files;
1.282 schwarze 127: struct manpage *res, *resp;
128: const char *progname, *sec, *thisarg;
129: char *conf_file, *defpaths, *auxpaths;
1.293 schwarze 130: char *oarg;
1.207 schwarze 131: unsigned char *uc;
1.264 schwarze 132: size_t i, sz;
1.230 schwarze 133: int prio, best_prio;
1.181 schwarze 134: enum outmode outmode;
1.192 schwarze 135: int fd;
1.180 schwarze 136: int show_usage;
1.170 schwarze 137: int options;
1.244 schwarze 138: int use_pager;
1.259 schwarze 139: int status, signum;
1.180 schwarze 140: int c;
1.259 schwarze 141: pid_t pager_pid, tc_pgid, man_pgid, pid;
1.1 kristaps 142:
1.254 schwarze 143: #if HAVE_PROGNAME
144: progname = getprogname();
145: #else
1.219 schwarze 146: if (argc < 1)
1.254 schwarze 147: progname = mandoc_strdup("mandoc");
148: else if ((progname = strrchr(argv[0], '/')) == NULL)
149: progname = argv[0];
1.54 kristaps 150: else
1.254 schwarze 151: ++progname;
152: setprogname(progname);
1.247 schwarze 153: #endif
1.203 schwarze 154:
1.254 schwarze 155: if (strncmp(progname, "mandocdb", 8) == 0 ||
156: strcmp(progname, BINM_MAKEWHATIS) == 0)
1.245 schwarze 157: return mandocdb(argc, argv);
1.179 schwarze 158:
1.255 schwarze 159: #if HAVE_PLEDGE
1.284 schwarze 160: if (pledge("stdio rpath tmppath tty proc exec", NULL) == -1)
1.255 schwarze 161: err((int)MANDOCLEVEL_SYSERR, "pledge");
1.269 kristaps 162: #endif
163:
164: #if HAVE_SANDBOX_INIT
165: if (sandbox_init(kSBXProfileNoInternet, SANDBOX_NAMED, NULL) == -1)
166: errx((int)MANDOCLEVEL_SYSERR, "sandbox_init");
1.255 schwarze 167: #endif
168:
1.180 schwarze 169: /* Search options. */
170:
1.229 schwarze 171: memset(&conf, 0, sizeof(conf));
1.205 schwarze 172: conf_file = defpaths = NULL;
173: auxpaths = NULL;
1.180 schwarze 174:
175: memset(&search, 0, sizeof(struct mansearch));
176: search.outkey = "Nd";
1.282 schwarze 177: oarg = NULL;
1.180 schwarze 178:
1.254 schwarze 179: if (strcmp(progname, BINM_MAN) == 0)
1.180 schwarze 180: search.argmode = ARG_NAME;
1.254 schwarze 181: else if (strcmp(progname, BINM_APROPOS) == 0)
1.180 schwarze 182: search.argmode = ARG_EXPR;
1.254 schwarze 183: else if (strcmp(progname, BINM_WHATIS) == 0)
1.180 schwarze 184: search.argmode = ARG_WORD;
1.254 schwarze 185: else if (strncmp(progname, "help", 4) == 0)
1.202 schwarze 186: search.argmode = ARG_NAME;
1.180 schwarze 187: else
188: search.argmode = ARG_FILE;
189:
190: /* Parser and formatter options. */
1.54 kristaps 191:
1.51 kristaps 192: memset(&curp, 0, sizeof(struct curparse));
1.201 schwarze 193: curp.outtype = OUTT_LOCALE;
1.293 schwarze 194: curp.mmin = MANDOCERR_MAX;
1.230 schwarze 195: curp.outopts = &conf.output;
1.194 schwarze 196: options = MPARSE_SO | MPARSE_UTF8 | MPARSE_LATIN1;
1.300 schwarze 197: mmsg_stream = stderr;
1.19 kristaps 198:
1.244 schwarze 199: use_pager = 1;
200: tag_files = NULL;
1.180 schwarze 201: show_usage = 0;
1.181 schwarze 202: outmode = OUTMODE_DEF;
1.183 schwarze 203:
1.289 schwarze 204: while ((c = getopt(argc, argv,
205: "aC:cfhI:iK:klM:m:O:S:s:T:VW:w")) != -1) {
206: if (c == 'i' && search.argmode == ARG_EXPR) {
207: optind--;
208: break;
209: }
1.1 kristaps 210: switch (c) {
1.181 schwarze 211: case 'a':
212: outmode = OUTMODE_ALL;
213: break;
1.180 schwarze 214: case 'C':
215: conf_file = optarg;
216: break;
1.183 schwarze 217: case 'c':
1.244 schwarze 218: use_pager = 0;
1.183 schwarze 219: break;
1.180 schwarze 220: case 'f':
221: search.argmode = ARG_WORD;
222: break;
1.190 schwarze 223: case 'h':
1.230 schwarze 224: conf.output.synopsisonly = 1;
1.244 schwarze 225: use_pager = 0;
1.190 schwarze 226: outmode = OUTMODE_ALL;
227: break;
1.173 schwarze 228: case 'I':
1.166 schwarze 229: if (strncmp(optarg, "os=", 3)) {
1.247 schwarze 230: warnx("-I %s: Bad argument", optarg);
1.245 schwarze 231: return (int)MANDOCLEVEL_BADARG;
1.166 schwarze 232: }
1.293 schwarze 233: if (curp.os_s != NULL) {
1.247 schwarze 234: warnx("-I %s: Duplicate argument", optarg);
1.245 schwarze 235: return (int)MANDOCLEVEL_BADARG;
1.166 schwarze 236: }
1.293 schwarze 237: curp.os_s = mandoc_strdup(optarg + 3);
1.181 schwarze 238: break;
1.194 schwarze 239: case 'K':
240: if ( ! koptions(&options, optarg))
1.245 schwarze 241: return (int)MANDOCLEVEL_BADARG;
1.194 schwarze 242: break;
1.180 schwarze 243: case 'k':
244: search.argmode = ARG_EXPR;
245: break;
1.188 schwarze 246: case 'l':
247: search.argmode = ARG_FILE;
248: outmode = OUTMODE_ALL;
249: break;
1.180 schwarze 250: case 'M':
251: defpaths = optarg;
252: break;
1.173 schwarze 253: case 'm':
1.180 schwarze 254: auxpaths = optarg;
1.10 kristaps 255: break;
1.173 schwarze 256: case 'O':
1.282 schwarze 257: oarg = optarg;
1.44 kristaps 258: break;
1.180 schwarze 259: case 'S':
260: search.arch = optarg;
261: break;
262: case 's':
263: search.sec = optarg;
264: break;
1.173 schwarze 265: case 'T':
1.60 kristaps 266: if ( ! toptions(&curp, optarg))
1.245 schwarze 267: return (int)MANDOCLEVEL_BADARG;
1.1 kristaps 268: break;
1.173 schwarze 269: case 'W':
1.103 schwarze 270: if ( ! woptions(&curp, optarg))
1.245 schwarze 271: return (int)MANDOCLEVEL_BADARG;
1.1 kristaps 272: break;
1.181 schwarze 273: case 'w':
274: outmode = OUTMODE_FLN;
275: break;
1.1 kristaps 276: default:
1.180 schwarze 277: show_usage = 1;
278: break;
1.1 kristaps 279: }
1.180 schwarze 280: }
281:
282: if (show_usage)
283: usage(search.argmode);
284:
1.185 schwarze 285: /* Postprocess options. */
286:
1.181 schwarze 287: if (outmode == OUTMODE_DEF) {
288: switch (search.argmode) {
289: case ARG_FILE:
290: outmode = OUTMODE_ALL;
1.244 schwarze 291: use_pager = 0;
1.181 schwarze 292: break;
293: case ARG_NAME:
294: outmode = OUTMODE_ONE;
295: break;
296: default:
297: outmode = OUTMODE_LST;
298: break;
1.282 schwarze 299: }
300: }
301:
302: if (oarg != NULL) {
303: if (outmode == OUTMODE_LST)
304: search.outkey = oarg;
305: else {
306: while (oarg != NULL) {
307: thisarg = oarg;
308: if (manconf_output(&conf.output,
309: strsep(&oarg, ","), 0) == 0)
310: continue;
311: warnx("-O %s: Bad argument", thisarg);
312: return (int)MANDOCLEVEL_BADARG;
313: }
1.181 schwarze 314: }
315: }
316:
1.246 schwarze 317: if (outmode == OUTMODE_FLN ||
318: outmode == OUTMODE_LST ||
319: !isatty(STDOUT_FILENO))
320: use_pager = 0;
1.304 ! schwarze 321:
! 322: if (use_pager &&
! 323: (conf.output.width == 0 || conf.output.indent == 0) &&
! 324: ioctl(STDOUT_FILENO, TIOCGWINSZ, &ws) != -1) {
! 325: if (conf.output.width == 0 && ws.ws_col < 79)
! 326: conf.output.width = ws.ws_col - 1;
! 327: if (conf.output.indent == 0 && ws.ws_col < 66)
! 328: conf.output.indent = 3;
! 329: }
1.246 schwarze 330:
1.255 schwarze 331: #if HAVE_PLEDGE
1.260 schwarze 332: if (!use_pager)
1.284 schwarze 333: if (pledge("stdio rpath", NULL) == -1)
1.260 schwarze 334: err((int)MANDOCLEVEL_SYSERR, "pledge");
1.255 schwarze 335: #endif
336:
1.185 schwarze 337: /* Parse arguments. */
338:
1.219 schwarze 339: if (argc > 0) {
340: argc -= optind;
341: argv += optind;
342: }
1.186 schwarze 343: resp = NULL;
1.185 schwarze 344:
1.202 schwarze 345: /*
346: * Quirks for help(1)
347: * and for a man(1) section argument without -s.
348: */
349:
350: if (search.argmode == ARG_NAME) {
1.254 schwarze 351: if (*progname == 'h') {
1.202 schwarze 352: if (argc == 0) {
353: argv = help_argv;
354: argc = 1;
355: }
1.211 schwarze 356: } else if (argc > 1 &&
1.223 kristaps 357: ((uc = (unsigned char *)argv[0]) != NULL) &&
1.207 schwarze 358: ((isdigit(uc[0]) && (uc[1] == '\0' ||
359: (isalpha(uc[1]) && uc[2] == '\0'))) ||
360: (uc[0] == 'n' && uc[1] == '\0'))) {
1.223 kristaps 361: search.sec = (char *)uc;
1.202 schwarze 362: argv++;
363: argc--;
364: }
1.216 schwarze 365: if (search.arch == NULL)
366: search.arch = getenv("MACHINE");
1.223 kristaps 367: #ifdef MACHINE
1.216 schwarze 368: if (search.arch == NULL)
369: search.arch = MACHINE;
1.223 kristaps 370: #endif
1.185 schwarze 371: }
1.182 schwarze 372:
373: rc = MANDOCLEVEL_OK;
1.180 schwarze 374:
375: /* man(1), whatis(1), apropos(1) */
376:
377: if (search.argmode != ARG_FILE) {
1.199 schwarze 378: if (search.argmode == ARG_NAME &&
379: outmode == OUTMODE_ONE)
380: search.firstmatch = 1;
1.182 schwarze 381:
382: /* Access the mandoc database. */
383:
1.229 schwarze 384: manconf_parse(&conf, conf_file, defpaths, auxpaths);
385: if ( ! mansearch(&search, &conf.manpath,
386: argc, argv, &res, &sz))
1.180 schwarze 387: usage(search.argmode);
1.213 schwarze 388:
1.237 schwarze 389: if (sz == 0) {
390: if (search.argmode == ARG_NAME)
391: fs_search(&search, &conf.manpath,
392: argc, argv, &res, &sz);
393: else
1.247 schwarze 394: warnx("nothing appropriate");
1.237 schwarze 395: }
1.187 schwarze 396:
397: if (sz == 0) {
398: rc = MANDOCLEVEL_BADARG;
399: goto out;
400: }
1.182 schwarze 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;
1.264 schwarze 410: best_prio = 20;
1.186 schwarze 411: } else if (outmode == OUTMODE_ALL)
1.182 schwarze 412: argc = (int)sz;
413:
414: /* Iterate all matching manuals. */
415:
1.213 schwarze 416: resp = res;
1.181 schwarze 417: for (i = 0; i < sz; i++) {
418: if (outmode == OUTMODE_FLN)
419: puts(res[i].file);
1.182 schwarze 420: else if (outmode == OUTMODE_LST)
1.181 schwarze 421: printf("%s - %s\n", res[i].names,
422: res[i].output == NULL ? "" :
423: res[i].output);
1.186 schwarze 424: else if (outmode == OUTMODE_ONE) {
1.182 schwarze 425: /* Search for the best section. */
1.264 schwarze 426: sec = res[i].file;
427: sec += strcspn(sec, "123456789");
428: if (sec[0] == '\0')
1.182 schwarze 429: continue;
1.264 schwarze 430: prio = sec_prios[sec[0] - '1'];
431: if (sec[1] != '/')
432: prio += 10;
1.182 schwarze 433: if (prio >= best_prio)
434: continue;
435: best_prio = prio;
1.186 schwarze 436: resp = res + i;
1.182 schwarze 437: }
1.181 schwarze 438: }
1.182 schwarze 439:
440: /*
441: * For man(1), -a and -i output mode, fall through
442: * to the main mandoc(1) code iterating files
443: * and running the parsers on each of them.
444: */
445:
446: if (outmode == OUTMODE_FLN || outmode == OUTMODE_LST)
447: goto out;
1.180 schwarze 448: }
449:
450: /* mandoc(1) */
451:
1.255 schwarze 452: #if HAVE_PLEDGE
1.260 schwarze 453: if (use_pager) {
454: if (pledge("stdio rpath tmppath tty proc exec", NULL) == -1)
455: err((int)MANDOCLEVEL_SYSERR, "pledge");
456: } else {
457: if (pledge("stdio rpath", NULL) == -1)
458: err((int)MANDOCLEVEL_SYSERR, "pledge");
459: }
1.255 schwarze 460: #endif
461:
1.286 schwarze 462: if (search.argmode == ARG_FILE)
463: moptions(&options, auxpaths);
1.241 schwarze 464:
1.249 schwarze 465: mchars_alloc();
1.293 schwarze 466: curp.mp = mparse_alloc(options, curp.mmin, mmsg,
467: curp.os_e, curp.os_s);
1.154 kristaps 468:
1.165 kristaps 469: /*
470: * Conditionally start up the lookaside buffer before parsing.
471: */
472: if (OUTT_MAN == curp.outtype)
473: mparse_keep(curp.mp);
474:
1.219 schwarze 475: if (argc < 1) {
1.244 schwarze 476: if (use_pager)
477: tag_files = tag_init();
1.227 schwarze 478: parse(&curp, STDIN_FILENO, "<stdin>");
1.212 schwarze 479: }
1.64 kristaps 480:
1.219 schwarze 481: while (argc > 0) {
1.262 schwarze 482: fd = mparse_open(curp.mp, resp != NULL ? resp->file : *argv);
1.212 schwarze 483: if (fd != -1) {
1.244 schwarze 484: if (use_pager) {
485: tag_files = tag_init();
486: use_pager = 0;
487: }
1.212 schwarze 488:
489: if (resp == NULL)
1.227 schwarze 490: parse(&curp, fd, *argv);
1.274 schwarze 491: else if (resp->form == FORM_SRC) {
1.189 schwarze 492: /* For .so only; ignore failure. */
1.301 schwarze 493: (void)chdir(conf.manpath.paths[resp->ipath]);
1.227 schwarze 494: parse(&curp, fd, resp->file);
495: } else
1.230 schwarze 496: passthrough(resp->file, fd,
497: conf.output.synopsisonly);
1.302 schwarze 498:
499: if (ferror(stdout)) {
500: if (tag_files != NULL) {
501: warn("%s", tag_files->ofn);
502: tag_unlink();
503: tag_files = NULL;
504: } else
505: warn("stdout");
506: rc = MANDOCLEVEL_SYSERR;
507: break;
508: }
1.212 schwarze 509:
1.276 schwarze 510: if (argc > 1 && curp.outtype <= OUTT_UTF8) {
511: if (curp.outdata == NULL)
512: outdata_alloc(&curp);
1.267 schwarze 513: terminal_sepline(curp.outdata);
1.276 schwarze 514: }
1.262 schwarze 515: } else if (rc < MANDOCLEVEL_ERROR)
516: rc = MANDOCLEVEL_ERROR;
1.192 schwarze 517:
1.154 kristaps 518: if (MANDOCLEVEL_OK != rc && curp.wstop)
1.64 kristaps 519: break;
1.210 schwarze 520:
1.212 schwarze 521: if (resp != NULL)
522: resp++;
523: else
524: argv++;
525: if (--argc)
526: mparse_reset(curp.mp);
1.1 kristaps 527: }
528:
1.252 schwarze 529: if (curp.outdata != NULL) {
530: switch (curp.outtype) {
531: case OUTT_HTML:
532: html_free(curp.outdata);
533: break;
534: case OUTT_UTF8:
535: case OUTT_LOCALE:
536: case OUTT_ASCII:
537: ascii_free(curp.outdata);
538: break;
539: case OUTT_PDF:
540: case OUTT_PS:
541: pspdf_free(curp.outdata);
542: break;
543: default:
544: break;
545: }
1.250 schwarze 546: }
1.294 schwarze 547: mandoc_xr_free();
1.195 schwarze 548: mparse_free(curp.mp);
1.249 schwarze 549: mchars_free();
1.182 schwarze 550:
551: out:
552: if (search.argmode != ARG_FILE) {
1.229 schwarze 553: manconf_free(&conf);
1.182 schwarze 554: mansearch_free(res, sz);
555: }
556:
1.293 schwarze 557: free(curp.os_s);
1.1 kristaps 558:
1.224 schwarze 559: /*
1.244 schwarze 560: * When using a pager, finish writing both temporary files,
561: * fork it, wait for the user to close it, and clean up.
1.224 schwarze 562: */
563:
1.244 schwarze 564: if (tag_files != NULL) {
1.225 schwarze 565: fclose(stdout);
1.239 schwarze 566: tag_write();
1.259 schwarze 567: man_pgid = getpgid(0);
568: tag_files->tcpgid = man_pgid == getpid() ?
569: getpgid(getppid()) : man_pgid;
570: pager_pid = 0;
571: signum = SIGSTOP;
1.258 schwarze 572: for (;;) {
1.259 schwarze 573:
574: /* Stop here until moved to the foreground. */
575:
1.279 schwarze 576: tc_pgid = tcgetpgrp(tag_files->ofd);
1.259 schwarze 577: if (tc_pgid != man_pgid) {
578: if (tc_pgid == pager_pid) {
1.279 schwarze 579: (void)tcsetpgrp(tag_files->ofd,
1.259 schwarze 580: man_pgid);
581: if (signum == SIGTTIN)
582: continue;
583: } else
584: tag_files->tcpgid = tc_pgid;
585: kill(0, signum);
586: continue;
587: }
588:
589: /* Once in the foreground, activate the pager. */
590:
591: if (pager_pid) {
1.279 schwarze 592: (void)tcsetpgrp(tag_files->ofd, pager_pid);
1.259 schwarze 593: kill(pager_pid, SIGCONT);
594: } else
595: pager_pid = spawn_pager(tag_files);
596:
597: /* Wait for the pager to stop or exit. */
598:
599: while ((pid = waitpid(pager_pid, &status,
600: WUNTRACED)) == -1 && errno == EINTR)
601: continue;
602:
603: if (pid == -1) {
1.258 schwarze 604: warn("wait");
605: rc = MANDOCLEVEL_SYSERR;
606: break;
607: }
608: if (!WIFSTOPPED(status))
609: break;
610:
1.259 schwarze 611: signum = WSTOPSIG(status);
1.258 schwarze 612: }
1.239 schwarze 613: tag_unlink();
1.225 schwarze 614: }
1.224 schwarze 615:
1.245 schwarze 616: return (int)rc;
1.1 kristaps 617: }
618:
1.55 kristaps 619: static void
1.180 schwarze 620: usage(enum argmode argmode)
1.1 kristaps 621: {
622:
1.180 schwarze 623: switch (argmode) {
624: case ARG_FILE:
1.287 schwarze 625: fputs("usage: mandoc [-ac] [-I os=name] "
626: "[-K encoding] [-mdoc | -man] [-O options]\n"
1.228 schwarze 627: "\t [-T output] [-W level] [file ...]\n", stderr);
1.180 schwarze 628: break;
629: case ARG_NAME:
1.287 schwarze 630: fputs("usage: man [-acfhklw] [-C file] [-M path] "
631: "[-m path] [-S subsection]\n"
632: "\t [[-s] section] name ...\n", stderr);
1.180 schwarze 633: break;
634: case ARG_WORD:
1.287 schwarze 635: fputs("usage: whatis [-afk] [-C file] "
1.188 schwarze 636: "[-M path] [-m path] [-O outkey] [-S arch]\n"
637: "\t [-s section] name ...\n", stderr);
1.180 schwarze 638: break;
639: case ARG_EXPR:
1.287 schwarze 640: fputs("usage: apropos [-afk] [-C file] "
1.188 schwarze 641: "[-M path] [-m path] [-O outkey] [-S arch]\n"
1.180 schwarze 642: "\t [-s section] expression ...\n", stderr);
643: break;
644: }
1.105 kristaps 645: exit((int)MANDOCLEVEL_BADARG);
1.68 joerg 646: }
1.213 schwarze 647:
648: static int
649: fs_lookup(const struct manpaths *paths, size_t ipath,
650: const char *sec, const char *arch, const char *name,
651: struct manpage **res, size_t *ressz)
652: {
1.222 schwarze 653: glob_t globinfo;
1.213 schwarze 654: struct manpage *page;
655: char *file;
1.274 schwarze 656: int globres;
657: enum form form;
1.213 schwarze 658:
1.222 schwarze 659: form = FORM_SRC;
1.213 schwarze 660: mandoc_asprintf(&file, "%s/man%s/%s.%s",
661: paths->paths[ipath], sec, name, sec);
1.222 schwarze 662: if (access(file, R_OK) != -1)
1.213 schwarze 663: goto found;
664: free(file);
665:
666: mandoc_asprintf(&file, "%s/cat%s/%s.0",
667: paths->paths[ipath], sec, name);
668: if (access(file, R_OK) != -1) {
669: form = FORM_CAT;
670: goto found;
671: }
672: free(file);
673:
674: if (arch != NULL) {
675: mandoc_asprintf(&file, "%s/man%s/%s/%s.%s",
676: paths->paths[ipath], sec, arch, name, sec);
1.222 schwarze 677: if (access(file, R_OK) != -1)
1.213 schwarze 678: goto found;
679: free(file);
680: }
1.222 schwarze 681:
1.240 schwarze 682: mandoc_asprintf(&file, "%s/man%s/%s.[01-9]*",
1.222 schwarze 683: paths->paths[ipath], sec, name);
684: globres = glob(file, 0, NULL, &globinfo);
685: if (globres != 0 && globres != GLOB_NOMATCH)
1.247 schwarze 686: warn("%s: glob", file);
1.222 schwarze 687: free(file);
688: if (globres == 0)
689: file = mandoc_strdup(*globinfo.gl_pathv);
690: globfree(&globinfo);
1.296 schwarze 691: if (globres == 0)
692: goto found;
693: if (res != NULL || ipath + 1 != paths->sz)
1.245 schwarze 694: return 0;
1.213 schwarze 695:
1.296 schwarze 696: mandoc_asprintf(&file, "%s.%s", name, sec);
697: globres = access(file, R_OK);
698: free(file);
699: return globres != -1;
700:
1.213 schwarze 701: found:
1.266 schwarze 702: warnx("outdated mandoc.db lacks %s(%s) entry, run %s %s",
703: name, sec, BINM_MAKEWHATIS, paths->paths[ipath]);
1.296 schwarze 704: if (res == NULL) {
705: free(file);
1.295 schwarze 706: return 1;
1.296 schwarze 707: }
1.213 schwarze 708: *res = mandoc_reallocarray(*res, ++*ressz, sizeof(struct manpage));
709: page = *res + (*ressz - 1);
710: page->file = file;
711: page->names = NULL;
712: page->output = NULL;
713: page->ipath = ipath;
714: page->bits = NAME_FILE & NAME_MASK;
715: page->sec = (*sec >= '1' && *sec <= '9') ? *sec - '1' + 1 : 10;
716: page->form = form;
1.245 schwarze 717: return 1;
1.213 schwarze 718: }
719:
1.295 schwarze 720: static int
1.213 schwarze 721: fs_search(const struct mansearch *cfg, const struct manpaths *paths,
722: int argc, char **argv, struct manpage **res, size_t *ressz)
723: {
724: const char *const sections[] =
1.264 schwarze 725: {"1", "8", "6", "2", "3", "5", "7", "4", "9", "3p"};
1.213 schwarze 726: const size_t nsec = sizeof(sections)/sizeof(sections[0]);
727:
728: size_t ipath, isec, lastsz;
729:
730: assert(cfg->argmode == ARG_NAME);
731:
1.295 schwarze 732: if (res != NULL)
733: *res = NULL;
1.213 schwarze 734: *ressz = lastsz = 0;
735: while (argc) {
736: for (ipath = 0; ipath < paths->sz; ipath++) {
737: if (cfg->sec != NULL) {
738: if (fs_lookup(paths, ipath, cfg->sec,
739: cfg->arch, *argv, res, ressz) &&
740: cfg->firstmatch)
1.295 schwarze 741: return 1;
1.213 schwarze 742: } else for (isec = 0; isec < nsec; isec++)
743: if (fs_lookup(paths, ipath, sections[isec],
744: cfg->arch, *argv, res, ressz) &&
745: cfg->firstmatch)
1.295 schwarze 746: return 1;
1.213 schwarze 747: }
1.295 schwarze 748: if (res != NULL && *ressz == lastsz)
1.247 schwarze 749: warnx("No entry for %s in the manual.", *argv);
1.213 schwarze 750: lastsz = *ressz;
751: argv++;
752: argc--;
753: }
1.295 schwarze 754: return 0;
1.213 schwarze 755: }
1.68 joerg 756:
1.64 kristaps 757: static void
1.227 schwarze 758: parse(struct curparse *curp, int fd, const char *file)
1.1 kristaps 759: {
1.227 schwarze 760: enum mandoclevel rctmp;
1.234 schwarze 761: struct roff_man *man;
1.112 kristaps 762:
1.154 kristaps 763: /* Begin by parsing the file itself. */
1.112 kristaps 764:
1.154 kristaps 765: assert(file);
1.263 schwarze 766: assert(fd >= 0);
1.112 kristaps 767:
1.227 schwarze 768: rctmp = mparse_readfd(curp->mp, fd, file);
1.261 schwarze 769: if (fd != STDIN_FILENO)
770: close(fd);
1.227 schwarze 771: if (rc < rctmp)
772: rc = rctmp;
1.112 kristaps 773:
1.1 kristaps 774: /*
1.154 kristaps 775: * With -Wstop and warnings or errors of at least the requested
776: * level, do not produce output.
1.1 kristaps 777: */
778:
1.227 schwarze 779: if (rctmp != MANDOCLEVEL_OK && curp->wstop)
780: return;
1.111 kristaps 781:
1.276 schwarze 782: if (curp->outdata == NULL)
783: outdata_alloc(curp);
1.111 kristaps 784:
1.250 schwarze 785: mparse_result(curp->mp, &man, NULL);
786:
787: /* Execute the out device, if it exists. */
788:
789: if (man == NULL)
790: return;
1.297 schwarze 791: mandoc_xr_reset();
1.250 schwarze 792: if (man->macroset == MACROSET_MDOC) {
1.281 schwarze 793: if (curp->outtype != OUTT_TREE || !curp->outopts->noval)
794: mdoc_validate(man);
1.111 kristaps 795: switch (curp->outtype) {
1.173 schwarze 796: case OUTT_HTML:
1.250 schwarze 797: html_mdoc(curp->outdata, man);
1.111 kristaps 798: break;
1.173 schwarze 799: case OUTT_TREE:
1.250 schwarze 800: tree_mdoc(curp->outdata, man);
1.111 kristaps 801: break;
1.173 schwarze 802: case OUTT_MAN:
1.250 schwarze 803: man_mdoc(curp->outdata, man);
1.164 schwarze 804: break;
1.173 schwarze 805: case OUTT_PDF:
806: case OUTT_ASCII:
807: case OUTT_UTF8:
808: case OUTT_LOCALE:
809: case OUTT_PS:
1.250 schwarze 810: terminal_mdoc(curp->outdata, man);
811: break;
1.285 schwarze 812: case OUTT_MARKDOWN:
813: markdown_mdoc(curp->outdata, man);
814: break;
1.250 schwarze 815: default:
816: break;
817: }
818: }
819: if (man->macroset == MACROSET_MAN) {
1.281 schwarze 820: if (curp->outtype != OUTT_TREE || !curp->outopts->noval)
821: man_validate(man);
1.250 schwarze 822: switch (curp->outtype) {
823: case OUTT_HTML:
824: html_man(curp->outdata, man);
825: break;
826: case OUTT_TREE:
827: tree_man(curp->outdata, man);
828: break;
829: case OUTT_MAN:
830: man_man(curp->outdata, man);
831: break;
832: case OUTT_PDF:
833: case OUTT_ASCII:
834: case OUTT_UTF8:
835: case OUTT_LOCALE:
836: case OUTT_PS:
837: terminal_man(curp->outdata, man);
1.111 kristaps 838: break;
839: default:
840: break;
841: }
1.276 schwarze 842: }
1.297 schwarze 843: if (curp->mmin < MANDOCERR_STYLE)
844: check_xr(file);
1.278 schwarze 845: mparse_updaterc(curp->mp, &rc);
1.294 schwarze 846: }
847:
848: static void
849: check_xr(const char *file)
850: {
851: static struct manpaths paths;
852: struct mansearch search;
853: struct mandoc_xr *xr;
854: char *cp;
855: size_t sz;
856:
857: if (paths.sz == 0)
858: manpath_base(&paths);
859:
860: for (xr = mandoc_xr_get(); xr != NULL; xr = xr->next) {
1.297 schwarze 861: if (xr->line == -1)
862: continue;
1.294 schwarze 863: search.arch = NULL;
864: search.sec = xr->sec;
865: search.outkey = NULL;
866: search.argmode = ARG_NAME;
867: search.firstmatch = 1;
868: if (mansearch(&search, &paths, 1, &xr->name, NULL, &sz))
1.295 schwarze 869: continue;
870: if (fs_search(&search, &paths, 1, &xr->name, NULL, &sz))
1.294 schwarze 871: continue;
1.298 schwarze 872: if (xr->count == 1)
873: mandoc_asprintf(&cp, "Xr %s %s", xr->name, xr->sec);
874: else
875: mandoc_asprintf(&cp, "Xr %s %s (%d times)",
876: xr->name, xr->sec, xr->count);
1.294 schwarze 877: mmsg(MANDOCERR_XR_BAD, MANDOCLEVEL_STYLE,
878: file, xr->line, xr->pos + 1, cp);
879: free(cp);
880: }
1.276 schwarze 881: }
882:
883: static void
884: outdata_alloc(struct curparse *curp)
885: {
886: switch (curp->outtype) {
887: case OUTT_HTML:
888: curp->outdata = html_alloc(curp->outopts);
889: break;
890: case OUTT_UTF8:
891: curp->outdata = utf8_alloc(curp->outopts);
892: break;
893: case OUTT_LOCALE:
894: curp->outdata = locale_alloc(curp->outopts);
895: break;
896: case OUTT_ASCII:
897: curp->outdata = ascii_alloc(curp->outopts);
898: break;
899: case OUTT_PDF:
900: curp->outdata = pdf_alloc(curp->outopts);
901: break;
902: case OUTT_PS:
903: curp->outdata = ps_alloc(curp->outopts);
904: break;
905: default:
906: break;
1.111 kristaps 907: }
1.186 schwarze 908: }
909:
1.227 schwarze 910: static void
1.197 schwarze 911: passthrough(const char *file, int fd, int synopsis_only)
1.186 schwarze 912: {
1.197 schwarze 913: const char synb[] = "S\bSY\bYN\bNO\bOP\bPS\bSI\bIS\bS";
914: const char synr[] = "SYNOPSIS";
915:
916: FILE *stream;
1.186 schwarze 917: const char *syscall;
1.257 schwarze 918: char *line, *cp;
919: size_t linesz;
1.277 schwarze 920: ssize_t len, written;
1.197 schwarze 921: int print;
1.210 schwarze 922:
1.257 schwarze 923: line = NULL;
924: linesz = 0;
1.197 schwarze 925:
1.277 schwarze 926: if (fflush(stdout) == EOF) {
927: syscall = "fflush";
928: goto fail;
929: }
930:
1.197 schwarze 931: if ((stream = fdopen(fd, "r")) == NULL) {
932: close(fd);
933: syscall = "fdopen";
934: goto fail;
935: }
1.186 schwarze 936:
1.197 schwarze 937: print = 0;
1.277 schwarze 938: while ((len = getline(&line, &linesz, stream)) != -1) {
1.257 schwarze 939: cp = line;
1.197 schwarze 940: if (synopsis_only) {
941: if (print) {
1.257 schwarze 942: if ( ! isspace((unsigned char)*cp))
1.197 schwarze 943: goto done;
1.277 schwarze 944: while (isspace((unsigned char)*cp)) {
1.257 schwarze 945: cp++;
1.277 schwarze 946: len--;
947: }
1.197 schwarze 948: } else {
1.257 schwarze 949: if (strcmp(cp, synb) == 0 ||
950: strcmp(cp, synr) == 0)
1.197 schwarze 951: print = 1;
952: continue;
953: }
954: }
1.277 schwarze 955: for (; len > 0; len -= written) {
956: if ((written = write(STDOUT_FILENO, cp, len)) != -1)
957: continue;
1.257 schwarze 958: fclose(stream);
1.277 schwarze 959: syscall = "write";
1.257 schwarze 960: goto fail;
961: }
1.197 schwarze 962: }
1.186 schwarze 963:
1.197 schwarze 964: if (ferror(stream)) {
965: fclose(stream);
1.257 schwarze 966: syscall = "getline";
1.197 schwarze 967: goto fail;
968: }
1.193 schwarze 969:
1.197 schwarze 970: done:
1.257 schwarze 971: free(line);
1.197 schwarze 972: fclose(stream);
1.227 schwarze 973: return;
1.186 schwarze 974:
975: fail:
1.257 schwarze 976: free(line);
1.247 schwarze 977: warn("%s: SYSERR: %s", file, syscall);
1.227 schwarze 978: if (rc < MANDOCLEVEL_SYSERR)
979: rc = MANDOCLEVEL_SYSERR;
1.194 schwarze 980: }
981:
982: static int
983: koptions(int *options, char *arg)
984: {
985:
986: if ( ! strcmp(arg, "utf-8")) {
987: *options |= MPARSE_UTF8;
988: *options &= ~MPARSE_LATIN1;
989: } else if ( ! strcmp(arg, "iso-8859-1")) {
990: *options |= MPARSE_LATIN1;
991: *options &= ~MPARSE_UTF8;
992: } else if ( ! strcmp(arg, "us-ascii")) {
993: *options &= ~(MPARSE_UTF8 | MPARSE_LATIN1);
994: } else {
1.247 schwarze 995: warnx("-K %s: Bad argument", arg);
1.245 schwarze 996: return 0;
1.194 schwarze 997: }
1.245 schwarze 998: return 1;
1.10 kristaps 999: }
1000:
1.286 schwarze 1001: static void
1.170 schwarze 1002: moptions(int *options, char *arg)
1.10 kristaps 1003: {
1004:
1.180 schwarze 1005: if (arg == NULL)
1.286 schwarze 1006: return;
1007: if (strcmp(arg, "doc") == 0)
1.170 schwarze 1008: *options |= MPARSE_MDOC;
1.286 schwarze 1009: else if (strcmp(arg, "an") == 0)
1.170 schwarze 1010: *options |= MPARSE_MAN;
1.1 kristaps 1011: }
1012:
1013: static int
1.60 kristaps 1014: toptions(struct curparse *curp, char *arg)
1.1 kristaps 1015: {
1016:
1017: if (0 == strcmp(arg, "ascii"))
1.60 kristaps 1018: curp->outtype = OUTT_ASCII;
1019: else if (0 == strcmp(arg, "lint")) {
1020: curp->outtype = OUTT_LINT;
1.293 schwarze 1021: curp->mmin = MANDOCERR_BASE;
1.300 schwarze 1022: mmsg_stream = stdout;
1.154 kristaps 1023: } else if (0 == strcmp(arg, "tree"))
1.60 kristaps 1024: curp->outtype = OUTT_TREE;
1.164 schwarze 1025: else if (0 == strcmp(arg, "man"))
1026: curp->outtype = OUTT_MAN;
1.43 kristaps 1027: else if (0 == strcmp(arg, "html"))
1.60 kristaps 1028: curp->outtype = OUTT_HTML;
1.285 schwarze 1029: else if (0 == strcmp(arg, "markdown"))
1030: curp->outtype = OUTT_MARKDOWN;
1.163 kristaps 1031: else if (0 == strcmp(arg, "utf8"))
1032: curp->outtype = OUTT_UTF8;
1.162 kristaps 1033: else if (0 == strcmp(arg, "locale"))
1034: curp->outtype = OUTT_LOCALE;
1.85 kristaps 1035: else if (0 == strcmp(arg, "ps"))
1036: curp->outtype = OUTT_PS;
1.100 kristaps 1037: else if (0 == strcmp(arg, "pdf"))
1038: curp->outtype = OUTT_PDF;
1.1 kristaps 1039: else {
1.247 schwarze 1040: warnx("-T %s: Bad argument", arg);
1.245 schwarze 1041: return 0;
1.1 kristaps 1042: }
1043:
1.245 schwarze 1044: return 1;
1.1 kristaps 1045: }
1046:
1047: static int
1.103 schwarze 1048: woptions(struct curparse *curp, char *arg)
1.1 kristaps 1049: {
1.34 kristaps 1050: char *v, *o;
1.293 schwarze 1051: const char *toks[11];
1.1 kristaps 1052:
1.103 schwarze 1053: toks[0] = "stop";
1054: toks[1] = "all";
1.293 schwarze 1055: toks[2] = "base";
1056: toks[3] = "style";
1057: toks[4] = "warning";
1058: toks[5] = "error";
1059: toks[6] = "unsupp";
1060: toks[7] = "fatal";
1061: toks[8] = "openbsd";
1062: toks[9] = "netbsd";
1063: toks[10] = NULL;
1.1 kristaps 1064:
1.34 kristaps 1065: while (*arg) {
1066: o = arg;
1.272 schwarze 1067: switch (getsubopt(&arg, (char * const *)toks, &v)) {
1.173 schwarze 1068: case 0:
1.103 schwarze 1069: curp->wstop = 1;
1.1 kristaps 1070: break;
1.173 schwarze 1071: case 1:
1072: case 2:
1.293 schwarze 1073: curp->mmin = MANDOCERR_BASE;
1.290 schwarze 1074: break;
1075: case 3:
1.293 schwarze 1076: curp->mmin = MANDOCERR_STYLE;
1.1 kristaps 1077: break;
1.290 schwarze 1078: case 4:
1.293 schwarze 1079: curp->mmin = MANDOCERR_WARNING;
1.24 kristaps 1080: break;
1.290 schwarze 1081: case 5:
1.293 schwarze 1082: curp->mmin = MANDOCERR_ERROR;
1.217 schwarze 1083: break;
1.290 schwarze 1084: case 6:
1.293 schwarze 1085: curp->mmin = MANDOCERR_UNSUPP;
1086: break;
1087: case 7:
1088: curp->mmin = MANDOCERR_MAX;
1089: break;
1090: case 8:
1091: curp->mmin = MANDOCERR_BASE;
1092: curp->os_e = MANDOC_OS_OPENBSD;
1093: break;
1094: case 9:
1095: curp->mmin = MANDOCERR_BASE;
1096: curp->os_e = MANDOC_OS_NETBSD;
1.50 kristaps 1097: break;
1.1 kristaps 1098: default:
1.247 schwarze 1099: warnx("-W %s: Bad argument", o);
1.245 schwarze 1100: return 0;
1.1 kristaps 1101: }
1.34 kristaps 1102: }
1.245 schwarze 1103: return 1;
1.1 kristaps 1104: }
1105:
1.153 kristaps 1106: static void
1.173 schwarze 1107: mmsg(enum mandocerr t, enum mandoclevel lvl,
1.155 kristaps 1108: const char *file, int line, int col, const char *msg)
1.71 kristaps 1109: {
1.177 schwarze 1110: const char *mparse_msg;
1.103 schwarze 1111:
1.300 schwarze 1112: fprintf(mmsg_stream, "%s: %s:", getprogname(),
1.275 schwarze 1113: file == NULL ? "<stdin>" : file);
1.175 schwarze 1114:
1115: if (line)
1.300 schwarze 1116: fprintf(mmsg_stream, "%d:%d:", line, col + 1);
1.175 schwarze 1117:
1.300 schwarze 1118: fprintf(mmsg_stream, " %s", mparse_strlevel(lvl));
1.177 schwarze 1119:
1.293 schwarze 1120: if ((mparse_msg = mparse_strerror(t)) != NULL)
1.300 schwarze 1121: fprintf(mmsg_stream, ": %s", mparse_msg);
1.154 kristaps 1122:
1.73 kristaps 1123: if (msg)
1.300 schwarze 1124: fprintf(mmsg_stream, ": %s", msg);
1.154 kristaps 1125:
1.300 schwarze 1126: fputc('\n', mmsg_stream);
1.183 schwarze 1127: }
1128:
1.225 schwarze 1129: static pid_t
1.244 schwarze 1130: spawn_pager(struct tag_files *tag_files)
1.183 schwarze 1131: {
1.265 schwarze 1132: const struct timespec timeout = { 0, 100000000 }; /* 0.1s */
1.184 schwarze 1133: #define MAX_PAGER_ARGS 16
1134: char *argv[MAX_PAGER_ARGS];
1135: const char *pager;
1136: char *cp;
1.239 schwarze 1137: size_t cmdlen;
1.184 schwarze 1138: int argc;
1.225 schwarze 1139: pid_t pager_pid;
1.183 schwarze 1140:
1.239 schwarze 1141: pager = getenv("MANPAGER");
1142: if (pager == NULL || *pager == '\0')
1143: pager = getenv("PAGER");
1144: if (pager == NULL || *pager == '\0')
1145: pager = "more -s";
1146: cp = mandoc_strdup(pager);
1147:
1148: /*
1149: * Parse the pager command into words.
1150: * Intentionally do not do anything fancy here.
1151: */
1152:
1153: argc = 0;
1154: while (argc + 4 < MAX_PAGER_ARGS) {
1155: argv[argc++] = cp;
1156: cp = strchr(cp, ' ');
1157: if (cp == NULL)
1158: break;
1159: *cp++ = '\0';
1160: while (*cp == ' ')
1161: cp++;
1162: if (*cp == '\0')
1163: break;
1164: }
1165:
1.268 schwarze 1166: /* For less(1), use the tag file. */
1.239 schwarze 1167:
1.244 schwarze 1168: if ((cmdlen = strlen(argv[0])) >= 4) {
1.239 schwarze 1169: cp = argv[0] + cmdlen - 4;
1.268 schwarze 1170: if (strcmp(cp, "less") == 0) {
1.244 schwarze 1171: argv[argc++] = mandoc_strdup("-T");
1172: argv[argc++] = tag_files->tfn;
1173: }
1.239 schwarze 1174: }
1.244 schwarze 1175: argv[argc++] = tag_files->ofn;
1.239 schwarze 1176: argv[argc] = NULL;
1177:
1.225 schwarze 1178: switch (pager_pid = fork()) {
1.183 schwarze 1179: case -1:
1.247 schwarze 1180: err((int)MANDOCLEVEL_SYSERR, "fork");
1.183 schwarze 1181: case 0:
1.224 schwarze 1182: break;
1183: default:
1.258 schwarze 1184: (void)setpgid(pager_pid, 0);
1.279 schwarze 1185: (void)tcsetpgrp(tag_files->ofd, pager_pid);
1.255 schwarze 1186: #if HAVE_PLEDGE
1.258 schwarze 1187: if (pledge("stdio rpath tmppath tty proc", NULL) == -1)
1.255 schwarze 1188: err((int)MANDOCLEVEL_SYSERR, "pledge");
1189: #endif
1.259 schwarze 1190: tag_files->pager_pid = pager_pid;
1.245 schwarze 1191: return pager_pid;
1.184 schwarze 1192: }
1193:
1.224 schwarze 1194: /* The child process becomes the pager. */
1.184 schwarze 1195:
1.247 schwarze 1196: if (dup2(tag_files->ofd, STDOUT_FILENO) == -1)
1197: err((int)MANDOCLEVEL_SYSERR, "pager stdout");
1.244 schwarze 1198: close(tag_files->ofd);
1.303 schwarze 1199: assert(tag_files->tfd == -1);
1.265 schwarze 1200:
1201: /* Do not start the pager before controlling the terminal. */
1202:
1.279 schwarze 1203: while (tcgetpgrp(STDOUT_FILENO) != getpid())
1.265 schwarze 1204: nanosleep(&timeout, NULL);
1205:
1.184 schwarze 1206: execvp(argv[0], argv);
1.247 schwarze 1207: err((int)MANDOCLEVEL_SYSERR, "exec %s", argv[0]);
1.71 kristaps 1208: }
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