Annotation of mandoc/main.c, Revision 1.313
1.313 ! schwarze 1: /* $Id: main.c,v 1.312 2018/12/14 01:18:25 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"
1.311 schwarze 52: #include "mandoc_parse.h"
1.239 schwarze 53: #include "tag.h"
1.231 schwarze 54: #include "main.h"
1.229 schwarze 55: #include "manconf.h"
1.180 schwarze 56: #include "mansearch.h"
1.16 kristaps 57:
1.181 schwarze 58: enum outmode {
59: OUTMODE_DEF = 0,
60: OUTMODE_FLN,
61: OUTMODE_LST,
62: OUTMODE_ALL,
63: OUTMODE_ONE
64: };
65:
1.19 kristaps 66: enum outt {
1.154 kristaps 67: OUTT_ASCII = 0, /* -Tascii */
1.162 kristaps 68: OUTT_LOCALE, /* -Tlocale */
1.163 kristaps 69: OUTT_UTF8, /* -Tutf8 */
1.154 kristaps 70: OUTT_TREE, /* -Ttree */
1.164 schwarze 71: OUTT_MAN, /* -Tman */
1.154 kristaps 72: OUTT_HTML, /* -Thtml */
1.285 schwarze 73: OUTT_MARKDOWN, /* -Tmarkdown */
1.154 kristaps 74: OUTT_LINT, /* -Tlint */
75: OUTT_PS, /* -Tps */
76: OUTT_PDF /* -Tpdf */
1.19 kristaps 77: };
78:
1.5 kristaps 79: struct curparse {
1.154 kristaps 80: struct mparse *mp;
1.293 schwarze 81: struct manoutput *outopts; /* output options */
82: void *outdata; /* data for output */
83: char *os_s; /* operating system for display */
1.148 kristaps 84: int wstop; /* stop after a file with a warning */
1.293 schwarze 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:
1.312 schwarze 92: static void check_xr(void);
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 *);
1.276 schwarze 102: static void outdata_alloc(struct curparse *);
1.227 schwarze 103: static void parse(struct curparse *, int, const char *);
104: static void passthrough(const char *, int, int);
1.244 schwarze 105: static pid_t spawn_pager(struct tag_files *);
1.66 kristaps 106: static int toptions(struct curparse *, char *);
1.283 schwarze 107: static void usage(enum argmode) __attribute__((__noreturn__));
1.103 schwarze 108: static int woptions(struct curparse *, char *);
1.1 kristaps 109:
1.182 schwarze 110: static const int sec_prios[] = {1, 4, 5, 8, 6, 3, 7, 2, 9};
1.202 schwarze 111: static char help_arg[] = "help";
112: static char *help_argv[] = {help_arg, NULL};
1.1 kristaps 113:
1.173 schwarze 114:
1.1 kristaps 115: int
116: main(int argc, char *argv[])
117: {
1.229 schwarze 118: struct manconf conf;
1.282 schwarze 119: struct mansearch search;
1.5 kristaps 120: struct curparse curp;
1.304 schwarze 121: struct winsize ws;
1.244 schwarze 122: struct tag_files *tag_files;
1.282 schwarze 123: struct manpage *res, *resp;
124: const char *progname, *sec, *thisarg;
125: char *conf_file, *defpaths, *auxpaths;
1.293 schwarze 126: char *oarg;
1.207 schwarze 127: unsigned char *uc;
1.264 schwarze 128: size_t i, sz;
1.230 schwarze 129: int prio, best_prio;
1.181 schwarze 130: enum outmode outmode;
1.305 schwarze 131: int fd, startdir;
1.180 schwarze 132: int show_usage;
1.170 schwarze 133: int options;
1.244 schwarze 134: int use_pager;
1.259 schwarze 135: int status, signum;
1.180 schwarze 136: int c;
1.259 schwarze 137: pid_t pager_pid, tc_pgid, man_pgid, pid;
1.1 kristaps 138:
1.254 schwarze 139: #if HAVE_PROGNAME
140: progname = getprogname();
141: #else
1.219 schwarze 142: if (argc < 1)
1.254 schwarze 143: progname = mandoc_strdup("mandoc");
144: else if ((progname = strrchr(argv[0], '/')) == NULL)
145: progname = argv[0];
1.54 kristaps 146: else
1.254 schwarze 147: ++progname;
148: setprogname(progname);
1.247 schwarze 149: #endif
1.203 schwarze 150:
1.254 schwarze 151: if (strncmp(progname, "mandocdb", 8) == 0 ||
152: strcmp(progname, BINM_MAKEWHATIS) == 0)
1.245 schwarze 153: return mandocdb(argc, argv);
1.179 schwarze 154:
1.255 schwarze 155: #if HAVE_PLEDGE
1.284 schwarze 156: if (pledge("stdio rpath tmppath tty proc exec", NULL) == -1)
1.255 schwarze 157: err((int)MANDOCLEVEL_SYSERR, "pledge");
1.269 kristaps 158: #endif
159:
160: #if HAVE_SANDBOX_INIT
161: if (sandbox_init(kSBXProfileNoInternet, SANDBOX_NAMED, NULL) == -1)
162: errx((int)MANDOCLEVEL_SYSERR, "sandbox_init");
1.255 schwarze 163: #endif
164:
1.180 schwarze 165: /* Search options. */
166:
1.229 schwarze 167: memset(&conf, 0, sizeof(conf));
1.205 schwarze 168: conf_file = defpaths = NULL;
169: auxpaths = NULL;
1.180 schwarze 170:
171: memset(&search, 0, sizeof(struct mansearch));
172: search.outkey = "Nd";
1.282 schwarze 173: oarg = NULL;
1.180 schwarze 174:
1.254 schwarze 175: if (strcmp(progname, BINM_MAN) == 0)
1.180 schwarze 176: search.argmode = ARG_NAME;
1.254 schwarze 177: else if (strcmp(progname, BINM_APROPOS) == 0)
1.180 schwarze 178: search.argmode = ARG_EXPR;
1.254 schwarze 179: else if (strcmp(progname, BINM_WHATIS) == 0)
1.180 schwarze 180: search.argmode = ARG_WORD;
1.254 schwarze 181: else if (strncmp(progname, "help", 4) == 0)
1.202 schwarze 182: search.argmode = ARG_NAME;
1.180 schwarze 183: else
184: search.argmode = ARG_FILE;
185:
186: /* Parser and formatter options. */
1.54 kristaps 187:
1.51 kristaps 188: memset(&curp, 0, sizeof(struct curparse));
1.201 schwarze 189: curp.outtype = OUTT_LOCALE;
1.230 schwarze 190: curp.outopts = &conf.output;
1.194 schwarze 191: options = MPARSE_SO | MPARSE_UTF8 | MPARSE_LATIN1;
1.19 kristaps 192:
1.244 schwarze 193: use_pager = 1;
194: tag_files = NULL;
1.180 schwarze 195: show_usage = 0;
1.181 schwarze 196: outmode = OUTMODE_DEF;
1.183 schwarze 197:
1.289 schwarze 198: while ((c = getopt(argc, argv,
199: "aC:cfhI:iK:klM:m:O:S:s:T:VW:w")) != -1) {
200: if (c == 'i' && search.argmode == ARG_EXPR) {
201: optind--;
202: break;
203: }
1.1 kristaps 204: switch (c) {
1.181 schwarze 205: case 'a':
206: outmode = OUTMODE_ALL;
207: break;
1.180 schwarze 208: case 'C':
209: conf_file = optarg;
210: break;
1.183 schwarze 211: case 'c':
1.244 schwarze 212: use_pager = 0;
1.183 schwarze 213: break;
1.180 schwarze 214: case 'f':
215: search.argmode = ARG_WORD;
216: break;
1.190 schwarze 217: case 'h':
1.230 schwarze 218: conf.output.synopsisonly = 1;
1.244 schwarze 219: use_pager = 0;
1.190 schwarze 220: outmode = OUTMODE_ALL;
221: break;
1.173 schwarze 222: case 'I':
1.166 schwarze 223: if (strncmp(optarg, "os=", 3)) {
1.247 schwarze 224: warnx("-I %s: Bad argument", optarg);
1.245 schwarze 225: return (int)MANDOCLEVEL_BADARG;
1.166 schwarze 226: }
1.293 schwarze 227: if (curp.os_s != NULL) {
1.247 schwarze 228: warnx("-I %s: Duplicate argument", optarg);
1.245 schwarze 229: return (int)MANDOCLEVEL_BADARG;
1.166 schwarze 230: }
1.293 schwarze 231: curp.os_s = mandoc_strdup(optarg + 3);
1.181 schwarze 232: break;
1.194 schwarze 233: case 'K':
234: if ( ! koptions(&options, optarg))
1.245 schwarze 235: return (int)MANDOCLEVEL_BADARG;
1.194 schwarze 236: break;
1.180 schwarze 237: case 'k':
238: search.argmode = ARG_EXPR;
239: break;
1.188 schwarze 240: case 'l':
241: search.argmode = ARG_FILE;
242: outmode = OUTMODE_ALL;
243: break;
1.180 schwarze 244: case 'M':
245: defpaths = optarg;
246: break;
1.173 schwarze 247: case 'm':
1.180 schwarze 248: auxpaths = optarg;
1.10 kristaps 249: break;
1.173 schwarze 250: case 'O':
1.282 schwarze 251: oarg = optarg;
1.44 kristaps 252: break;
1.180 schwarze 253: case 'S':
254: search.arch = optarg;
255: break;
256: case 's':
257: search.sec = optarg;
258: break;
1.173 schwarze 259: case 'T':
1.60 kristaps 260: if ( ! toptions(&curp, optarg))
1.245 schwarze 261: return (int)MANDOCLEVEL_BADARG;
1.1 kristaps 262: break;
1.173 schwarze 263: case 'W':
1.103 schwarze 264: if ( ! woptions(&curp, optarg))
1.245 schwarze 265: return (int)MANDOCLEVEL_BADARG;
1.1 kristaps 266: break;
1.181 schwarze 267: case 'w':
268: outmode = OUTMODE_FLN;
269: break;
1.1 kristaps 270: default:
1.180 schwarze 271: show_usage = 1;
272: break;
1.1 kristaps 273: }
1.180 schwarze 274: }
275:
276: if (show_usage)
277: usage(search.argmode);
278:
1.185 schwarze 279: /* Postprocess options. */
280:
1.181 schwarze 281: if (outmode == OUTMODE_DEF) {
282: switch (search.argmode) {
283: case ARG_FILE:
284: outmode = OUTMODE_ALL;
1.244 schwarze 285: use_pager = 0;
1.181 schwarze 286: break;
287: case ARG_NAME:
288: outmode = OUTMODE_ONE;
289: break;
290: default:
291: outmode = OUTMODE_LST;
292: break;
1.282 schwarze 293: }
294: }
295:
296: if (oarg != NULL) {
297: if (outmode == OUTMODE_LST)
298: search.outkey = oarg;
299: else {
300: while (oarg != NULL) {
301: thisarg = oarg;
302: if (manconf_output(&conf.output,
303: strsep(&oarg, ","), 0) == 0)
304: continue;
305: warnx("-O %s: Bad argument", thisarg);
306: return (int)MANDOCLEVEL_BADARG;
307: }
1.181 schwarze 308: }
309: }
310:
1.246 schwarze 311: if (outmode == OUTMODE_FLN ||
312: outmode == OUTMODE_LST ||
313: !isatty(STDOUT_FILENO))
314: use_pager = 0;
1.304 schwarze 315:
316: if (use_pager &&
317: (conf.output.width == 0 || conf.output.indent == 0) &&
1.306 schwarze 318: ioctl(STDOUT_FILENO, TIOCGWINSZ, &ws) != -1 &&
319: ws.ws_col > 1) {
1.304 schwarze 320: if (conf.output.width == 0 && ws.ws_col < 79)
321: conf.output.width = ws.ws_col - 1;
322: if (conf.output.indent == 0 && ws.ws_col < 66)
323: conf.output.indent = 3;
324: }
1.246 schwarze 325:
1.255 schwarze 326: #if HAVE_PLEDGE
1.260 schwarze 327: if (!use_pager)
1.284 schwarze 328: if (pledge("stdio rpath", NULL) == -1)
1.260 schwarze 329: err((int)MANDOCLEVEL_SYSERR, "pledge");
1.255 schwarze 330: #endif
331:
1.185 schwarze 332: /* Parse arguments. */
333:
1.219 schwarze 334: if (argc > 0) {
335: argc -= optind;
336: argv += optind;
337: }
1.186 schwarze 338: resp = NULL;
1.185 schwarze 339:
1.202 schwarze 340: /*
341: * Quirks for help(1)
342: * and for a man(1) section argument without -s.
343: */
344:
345: if (search.argmode == ARG_NAME) {
1.254 schwarze 346: if (*progname == 'h') {
1.202 schwarze 347: if (argc == 0) {
348: argv = help_argv;
349: argc = 1;
350: }
1.211 schwarze 351: } else if (argc > 1 &&
1.223 kristaps 352: ((uc = (unsigned char *)argv[0]) != NULL) &&
1.207 schwarze 353: ((isdigit(uc[0]) && (uc[1] == '\0' ||
354: (isalpha(uc[1]) && uc[2] == '\0'))) ||
355: (uc[0] == 'n' && uc[1] == '\0'))) {
1.223 kristaps 356: search.sec = (char *)uc;
1.202 schwarze 357: argv++;
358: argc--;
359: }
1.216 schwarze 360: if (search.arch == NULL)
361: search.arch = getenv("MACHINE");
1.223 kristaps 362: #ifdef MACHINE
1.216 schwarze 363: if (search.arch == NULL)
364: search.arch = MACHINE;
1.223 kristaps 365: #endif
1.185 schwarze 366: }
1.182 schwarze 367:
1.180 schwarze 368: /* man(1), whatis(1), apropos(1) */
369:
370: if (search.argmode != ARG_FILE) {
1.199 schwarze 371: if (search.argmode == ARG_NAME &&
372: outmode == OUTMODE_ONE)
373: search.firstmatch = 1;
1.182 schwarze 374:
375: /* Access the mandoc database. */
376:
1.229 schwarze 377: manconf_parse(&conf, conf_file, defpaths, auxpaths);
378: if ( ! mansearch(&search, &conf.manpath,
379: argc, argv, &res, &sz))
1.180 schwarze 380: usage(search.argmode);
1.213 schwarze 381:
1.305 schwarze 382: if (sz == 0 && search.argmode == ARG_NAME)
383: fs_search(&search, &conf.manpath,
384: argc, argv, &res, &sz);
385:
386: if (search.argmode == ARG_NAME) {
387: for (c = 0; c < argc; c++) {
388: if (strchr(argv[c], '/') == NULL)
389: continue;
390: if (access(argv[c], R_OK) == -1) {
391: warn("%s", argv[c]);
392: continue;
393: }
394: res = mandoc_reallocarray(res,
395: sz + 1, sizeof(*res));
396: res[sz].file = mandoc_strdup(argv[c]);
397: res[sz].names = NULL;
398: res[sz].output = NULL;
399: res[sz].ipath = SIZE_MAX;
400: res[sz].sec = 10;
401: res[sz].form = FORM_SRC;
402: sz++;
403: }
1.237 schwarze 404: }
1.187 schwarze 405:
406: if (sz == 0) {
1.305 schwarze 407: if (search.argmode != ARG_NAME)
408: warnx("nothing appropriate");
1.312 schwarze 409: mandoc_msg_setrc(MANDOCLEVEL_BADARG);
1.187 schwarze 410: goto out;
411: }
1.182 schwarze 412:
413: /*
414: * For standard man(1) and -a output mode,
415: * prepare for copying filename pointers
416: * into the program parameter array.
417: */
418:
419: if (outmode == OUTMODE_ONE) {
420: argc = 1;
1.264 schwarze 421: best_prio = 20;
1.186 schwarze 422: } else if (outmode == OUTMODE_ALL)
1.182 schwarze 423: argc = (int)sz;
424:
425: /* Iterate all matching manuals. */
426:
1.213 schwarze 427: resp = res;
1.181 schwarze 428: for (i = 0; i < sz; i++) {
429: if (outmode == OUTMODE_FLN)
430: puts(res[i].file);
1.182 schwarze 431: else if (outmode == OUTMODE_LST)
1.181 schwarze 432: printf("%s - %s\n", res[i].names,
433: res[i].output == NULL ? "" :
434: res[i].output);
1.186 schwarze 435: else if (outmode == OUTMODE_ONE) {
1.182 schwarze 436: /* Search for the best section. */
1.264 schwarze 437: sec = res[i].file;
438: sec += strcspn(sec, "123456789");
439: if (sec[0] == '\0')
1.182 schwarze 440: continue;
1.264 schwarze 441: prio = sec_prios[sec[0] - '1'];
442: if (sec[1] != '/')
443: prio += 10;
1.182 schwarze 444: if (prio >= best_prio)
445: continue;
446: best_prio = prio;
1.186 schwarze 447: resp = res + i;
1.182 schwarze 448: }
1.181 schwarze 449: }
1.182 schwarze 450:
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;
1.180 schwarze 459: }
460:
461: /* mandoc(1) */
462:
1.255 schwarze 463: #if HAVE_PLEDGE
1.260 schwarze 464: if (use_pager) {
465: if (pledge("stdio rpath tmppath tty proc exec", NULL) == -1)
466: err((int)MANDOCLEVEL_SYSERR, "pledge");
467: } else {
468: if (pledge("stdio rpath", NULL) == -1)
469: err((int)MANDOCLEVEL_SYSERR, "pledge");
470: }
1.255 schwarze 471: #endif
472:
1.286 schwarze 473: if (search.argmode == ARG_FILE)
474: moptions(&options, auxpaths);
1.241 schwarze 475:
1.249 schwarze 476: mchars_alloc();
1.312 schwarze 477: curp.mp = mparse_alloc(options, curp.os_e, curp.os_s);
1.154 kristaps 478:
1.219 schwarze 479: if (argc < 1) {
1.244 schwarze 480: if (use_pager)
481: tag_files = tag_init();
1.312 schwarze 482: thisarg = "<stdin>";
483: mandoc_msg_setinfilename(thisarg);
484: parse(&curp, STDIN_FILENO, thisarg);
485: mandoc_msg_setinfilename(NULL);
1.212 schwarze 486: }
1.64 kristaps 487:
1.305 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:
1.219 schwarze 497: while (argc > 0) {
1.305 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);
1.312 schwarze 509: thisarg = resp->file;
510: } else
511: thisarg = *argv;
1.305 schwarze 512:
1.312 schwarze 513: mandoc_msg_setinfilename(thisarg);
514: fd = mparse_open(curp.mp, thisarg);
1.212 schwarze 515: if (fd != -1) {
1.244 schwarze 516: if (use_pager) {
1.309 schwarze 517: use_pager = 0;
1.244 schwarze 518: tag_files = tag_init();
1.309 schwarze 519: if (conf.output.tag != NULL &&
520: tag_files->tagname == NULL)
521: tag_files->tagname =
522: *conf.output.tag != '\0' ?
523: conf.output.tag : *argv;
1.244 schwarze 524: }
1.212 schwarze 525:
1.312 schwarze 526: if (resp == NULL || resp->form == FORM_SRC)
527: parse(&curp, fd, thisarg);
1.305 schwarze 528: else
1.230 schwarze 529: passthrough(resp->file, fd,
530: conf.output.synopsisonly);
1.302 schwarze 531:
532: if (ferror(stdout)) {
533: if (tag_files != NULL) {
534: warn("%s", tag_files->ofn);
535: tag_unlink();
536: tag_files = NULL;
537: } else
538: warn("stdout");
1.312 schwarze 539: mandoc_msg_setrc(MANDOCLEVEL_SYSERR);
1.302 schwarze 540: break;
541: }
1.212 schwarze 542:
1.276 schwarze 543: if (argc > 1 && curp.outtype <= OUTT_UTF8) {
544: if (curp.outdata == NULL)
545: outdata_alloc(&curp);
1.267 schwarze 546: terminal_sepline(curp.outdata);
1.276 schwarze 547: }
1.312 schwarze 548: }
549: mandoc_msg_setinfilename(NULL);
1.192 schwarze 550:
1.312 schwarze 551: if (curp.wstop && mandoc_msg_getrc() != MANDOCLEVEL_OK)
1.64 kristaps 552: break;
1.210 schwarze 553:
1.212 schwarze 554: if (resp != NULL)
555: resp++;
556: else
557: argv++;
558: if (--argc)
559: mparse_reset(curp.mp);
1.1 kristaps 560: }
1.305 schwarze 561: if (startdir != -1) {
562: (void)fchdir(startdir);
563: close(startdir);
564: }
1.1 kristaps 565:
1.252 schwarze 566: if (curp.outdata != NULL) {
567: switch (curp.outtype) {
568: case OUTT_HTML:
569: html_free(curp.outdata);
570: break;
571: case OUTT_UTF8:
572: case OUTT_LOCALE:
573: case OUTT_ASCII:
574: ascii_free(curp.outdata);
575: break;
576: case OUTT_PDF:
577: case OUTT_PS:
578: pspdf_free(curp.outdata);
579: break;
580: default:
581: break;
582: }
1.250 schwarze 583: }
1.294 schwarze 584: mandoc_xr_free();
1.195 schwarze 585: mparse_free(curp.mp);
1.249 schwarze 586: mchars_free();
1.182 schwarze 587:
588: out:
589: if (search.argmode != ARG_FILE) {
1.229 schwarze 590: manconf_free(&conf);
1.182 schwarze 591: mansearch_free(res, sz);
592: }
593:
1.293 schwarze 594: free(curp.os_s);
1.1 kristaps 595:
1.224 schwarze 596: /*
1.244 schwarze 597: * When using a pager, finish writing both temporary files,
598: * fork it, wait for the user to close it, and clean up.
1.224 schwarze 599: */
600:
1.244 schwarze 601: if (tag_files != NULL) {
1.225 schwarze 602: fclose(stdout);
1.239 schwarze 603: tag_write();
1.259 schwarze 604: man_pgid = getpgid(0);
605: tag_files->tcpgid = man_pgid == getpid() ?
606: getpgid(getppid()) : man_pgid;
607: pager_pid = 0;
608: signum = SIGSTOP;
1.258 schwarze 609: for (;;) {
1.259 schwarze 610:
611: /* Stop here until moved to the foreground. */
612:
1.279 schwarze 613: tc_pgid = tcgetpgrp(tag_files->ofd);
1.259 schwarze 614: if (tc_pgid != man_pgid) {
615: if (tc_pgid == pager_pid) {
1.279 schwarze 616: (void)tcsetpgrp(tag_files->ofd,
1.259 schwarze 617: man_pgid);
618: if (signum == SIGTTIN)
619: continue;
620: } else
621: tag_files->tcpgid = tc_pgid;
622: kill(0, signum);
623: continue;
624: }
625:
626: /* Once in the foreground, activate the pager. */
627:
628: if (pager_pid) {
1.279 schwarze 629: (void)tcsetpgrp(tag_files->ofd, pager_pid);
1.259 schwarze 630: kill(pager_pid, SIGCONT);
631: } else
632: pager_pid = spawn_pager(tag_files);
633:
634: /* Wait for the pager to stop or exit. */
635:
636: while ((pid = waitpid(pager_pid, &status,
637: WUNTRACED)) == -1 && errno == EINTR)
638: continue;
639:
640: if (pid == -1) {
1.258 schwarze 641: warn("wait");
1.312 schwarze 642: mandoc_msg_setrc(MANDOCLEVEL_SYSERR);
1.258 schwarze 643: break;
644: }
645: if (!WIFSTOPPED(status))
646: break;
647:
1.259 schwarze 648: signum = WSTOPSIG(status);
1.258 schwarze 649: }
1.239 schwarze 650: tag_unlink();
1.225 schwarze 651: }
1.312 schwarze 652: return (int)mandoc_msg_getrc();
1.1 kristaps 653: }
654:
1.55 kristaps 655: static void
1.180 schwarze 656: usage(enum argmode argmode)
1.1 kristaps 657: {
658:
1.180 schwarze 659: switch (argmode) {
660: case ARG_FILE:
1.287 schwarze 661: fputs("usage: mandoc [-ac] [-I os=name] "
662: "[-K encoding] [-mdoc | -man] [-O options]\n"
1.228 schwarze 663: "\t [-T output] [-W level] [file ...]\n", stderr);
1.180 schwarze 664: break;
665: case ARG_NAME:
1.287 schwarze 666: fputs("usage: man [-acfhklw] [-C file] [-M path] "
667: "[-m path] [-S subsection]\n"
668: "\t [[-s] section] name ...\n", stderr);
1.180 schwarze 669: break;
670: case ARG_WORD:
1.287 schwarze 671: fputs("usage: whatis [-afk] [-C file] "
1.188 schwarze 672: "[-M path] [-m path] [-O outkey] [-S arch]\n"
673: "\t [-s section] name ...\n", stderr);
1.180 schwarze 674: break;
675: case ARG_EXPR:
1.287 schwarze 676: fputs("usage: apropos [-afk] [-C file] "
1.188 schwarze 677: "[-M path] [-m path] [-O outkey] [-S arch]\n"
1.180 schwarze 678: "\t [-s section] expression ...\n", stderr);
679: break;
680: }
1.105 kristaps 681: exit((int)MANDOCLEVEL_BADARG);
1.68 joerg 682: }
1.213 schwarze 683:
684: static int
685: fs_lookup(const struct manpaths *paths, size_t ipath,
686: const char *sec, const char *arch, const char *name,
687: struct manpage **res, size_t *ressz)
688: {
1.222 schwarze 689: glob_t globinfo;
1.213 schwarze 690: struct manpage *page;
691: char *file;
1.274 schwarze 692: int globres;
693: enum form form;
1.213 schwarze 694:
1.222 schwarze 695: form = FORM_SRC;
1.213 schwarze 696: mandoc_asprintf(&file, "%s/man%s/%s.%s",
697: paths->paths[ipath], sec, name, sec);
1.222 schwarze 698: if (access(file, R_OK) != -1)
1.213 schwarze 699: goto found;
700: free(file);
701:
702: mandoc_asprintf(&file, "%s/cat%s/%s.0",
703: paths->paths[ipath], sec, name);
704: if (access(file, R_OK) != -1) {
705: form = FORM_CAT;
706: goto found;
707: }
708: free(file);
709:
710: if (arch != NULL) {
711: mandoc_asprintf(&file, "%s/man%s/%s/%s.%s",
712: paths->paths[ipath], sec, arch, name, sec);
1.222 schwarze 713: if (access(file, R_OK) != -1)
1.213 schwarze 714: goto found;
715: free(file);
716: }
1.222 schwarze 717:
1.240 schwarze 718: mandoc_asprintf(&file, "%s/man%s/%s.[01-9]*",
1.222 schwarze 719: paths->paths[ipath], sec, name);
720: globres = glob(file, 0, NULL, &globinfo);
721: if (globres != 0 && globres != GLOB_NOMATCH)
1.247 schwarze 722: warn("%s: glob", file);
1.222 schwarze 723: free(file);
724: if (globres == 0)
725: file = mandoc_strdup(*globinfo.gl_pathv);
726: globfree(&globinfo);
1.296 schwarze 727: if (globres == 0)
728: goto found;
729: if (res != NULL || ipath + 1 != paths->sz)
1.245 schwarze 730: return 0;
1.213 schwarze 731:
1.296 schwarze 732: mandoc_asprintf(&file, "%s.%s", name, sec);
733: globres = access(file, R_OK);
734: free(file);
735: return globres != -1;
736:
1.213 schwarze 737: found:
1.266 schwarze 738: warnx("outdated mandoc.db lacks %s(%s) entry, run %s %s",
739: name, sec, BINM_MAKEWHATIS, paths->paths[ipath]);
1.296 schwarze 740: if (res == NULL) {
741: free(file);
1.295 schwarze 742: return 1;
1.296 schwarze 743: }
1.213 schwarze 744: *res = mandoc_reallocarray(*res, ++*ressz, sizeof(struct manpage));
745: page = *res + (*ressz - 1);
746: page->file = file;
747: page->names = NULL;
748: page->output = NULL;
749: page->ipath = ipath;
750: page->sec = (*sec >= '1' && *sec <= '9') ? *sec - '1' + 1 : 10;
751: page->form = form;
1.245 schwarze 752: return 1;
1.213 schwarze 753: }
754:
1.295 schwarze 755: static int
1.213 schwarze 756: fs_search(const struct mansearch *cfg, const struct manpaths *paths,
757: int argc, char **argv, struct manpage **res, size_t *ressz)
758: {
759: const char *const sections[] =
1.264 schwarze 760: {"1", "8", "6", "2", "3", "5", "7", "4", "9", "3p"};
1.213 schwarze 761: const size_t nsec = sizeof(sections)/sizeof(sections[0]);
762:
763: size_t ipath, isec, lastsz;
764:
765: assert(cfg->argmode == ARG_NAME);
766:
1.295 schwarze 767: if (res != NULL)
768: *res = NULL;
1.213 schwarze 769: *ressz = lastsz = 0;
770: while (argc) {
771: for (ipath = 0; ipath < paths->sz; ipath++) {
772: if (cfg->sec != NULL) {
773: if (fs_lookup(paths, ipath, cfg->sec,
774: cfg->arch, *argv, res, ressz) &&
775: cfg->firstmatch)
1.295 schwarze 776: return 1;
1.213 schwarze 777: } else for (isec = 0; isec < nsec; isec++)
778: if (fs_lookup(paths, ipath, sections[isec],
779: cfg->arch, *argv, res, ressz) &&
780: cfg->firstmatch)
1.295 schwarze 781: return 1;
1.213 schwarze 782: }
1.305 schwarze 783: if (res != NULL && *ressz == lastsz &&
1.307 schwarze 784: strchr(*argv, '/') == NULL) {
785: if (cfg->sec == NULL)
786: warnx("No entry for %s in the manual.",
787: *argv);
788: else
789: warnx("No entry for %s in section %s "
790: "of the manual.", *argv, cfg->sec);
791: }
1.213 schwarze 792: lastsz = *ressz;
793: argv++;
794: argc--;
795: }
1.295 schwarze 796: return 0;
1.213 schwarze 797: }
1.68 joerg 798:
1.64 kristaps 799: static void
1.227 schwarze 800: parse(struct curparse *curp, int fd, const char *file)
1.1 kristaps 801: {
1.234 schwarze 802: struct roff_man *man;
1.112 kristaps 803:
1.154 kristaps 804: /* Begin by parsing the file itself. */
1.112 kristaps 805:
1.154 kristaps 806: assert(file);
1.263 schwarze 807: assert(fd >= 0);
1.112 kristaps 808:
1.312 schwarze 809: mparse_readfd(curp->mp, fd, file);
1.261 schwarze 810: if (fd != STDIN_FILENO)
811: close(fd);
1.112 kristaps 812:
1.1 kristaps 813: /*
1.154 kristaps 814: * With -Wstop and warnings or errors of at least the requested
815: * level, do not produce output.
1.1 kristaps 816: */
817:
1.312 schwarze 818: if (curp->wstop && mandoc_msg_getrc() != MANDOCLEVEL_OK)
1.227 schwarze 819: return;
1.111 kristaps 820:
1.276 schwarze 821: if (curp->outdata == NULL)
822: outdata_alloc(curp);
1.111 kristaps 823:
1.250 schwarze 824: mparse_result(curp->mp, &man, NULL);
825:
826: /* Execute the out device, if it exists. */
827:
828: if (man == NULL)
829: return;
1.297 schwarze 830: mandoc_xr_reset();
1.250 schwarze 831: if (man->macroset == MACROSET_MDOC) {
1.281 schwarze 832: if (curp->outtype != OUTT_TREE || !curp->outopts->noval)
833: mdoc_validate(man);
1.111 kristaps 834: switch (curp->outtype) {
1.173 schwarze 835: case OUTT_HTML:
1.250 schwarze 836: html_mdoc(curp->outdata, man);
1.111 kristaps 837: break;
1.173 schwarze 838: case OUTT_TREE:
1.250 schwarze 839: tree_mdoc(curp->outdata, man);
1.111 kristaps 840: break;
1.173 schwarze 841: case OUTT_MAN:
1.250 schwarze 842: man_mdoc(curp->outdata, man);
1.164 schwarze 843: break;
1.173 schwarze 844: case OUTT_PDF:
845: case OUTT_ASCII:
846: case OUTT_UTF8:
847: case OUTT_LOCALE:
848: case OUTT_PS:
1.250 schwarze 849: terminal_mdoc(curp->outdata, man);
850: break;
1.285 schwarze 851: case OUTT_MARKDOWN:
852: markdown_mdoc(curp->outdata, man);
853: break;
1.250 schwarze 854: default:
855: break;
856: }
857: }
858: if (man->macroset == MACROSET_MAN) {
1.281 schwarze 859: if (curp->outtype != OUTT_TREE || !curp->outopts->noval)
860: man_validate(man);
1.250 schwarze 861: switch (curp->outtype) {
862: case OUTT_HTML:
863: html_man(curp->outdata, man);
864: break;
865: case OUTT_TREE:
866: tree_man(curp->outdata, man);
867: break;
868: case OUTT_MAN:
1.308 schwarze 869: mparse_copy(curp->mp);
1.250 schwarze 870: break;
871: case OUTT_PDF:
872: case OUTT_ASCII:
873: case OUTT_UTF8:
874: case OUTT_LOCALE:
875: case OUTT_PS:
876: terminal_man(curp->outdata, man);
1.111 kristaps 877: break;
878: default:
879: break;
880: }
1.276 schwarze 881: }
1.312 schwarze 882: if (mandoc_msg_getmin() < MANDOCERR_STYLE)
883: check_xr();
1.294 schwarze 884: }
885:
886: static void
1.312 schwarze 887: check_xr(void)
1.294 schwarze 888: {
889: static struct manpaths paths;
890: struct mansearch search;
891: struct mandoc_xr *xr;
892: size_t sz;
893:
894: if (paths.sz == 0)
895: manpath_base(&paths);
896:
897: for (xr = mandoc_xr_get(); xr != NULL; xr = xr->next) {
1.297 schwarze 898: if (xr->line == -1)
899: continue;
1.294 schwarze 900: search.arch = NULL;
901: search.sec = xr->sec;
902: search.outkey = NULL;
903: search.argmode = ARG_NAME;
904: search.firstmatch = 1;
905: if (mansearch(&search, &paths, 1, &xr->name, NULL, &sz))
1.295 schwarze 906: continue;
907: if (fs_search(&search, &paths, 1, &xr->name, NULL, &sz))
1.294 schwarze 908: continue;
1.298 schwarze 909: if (xr->count == 1)
1.313 ! schwarze 910: mandoc_msg(MANDOCERR_XR_BAD, xr->line,
! 911: xr->pos + 1, "Xr %s %s", xr->name, xr->sec);
1.298 schwarze 912: else
1.313 ! schwarze 913: mandoc_msg(MANDOCERR_XR_BAD, xr->line,
! 914: xr->pos + 1, "Xr %s %s (%d times)",
1.298 schwarze 915: xr->name, xr->sec, xr->count);
1.294 schwarze 916: }
1.276 schwarze 917: }
918:
919: static void
920: outdata_alloc(struct curparse *curp)
921: {
922: switch (curp->outtype) {
923: case OUTT_HTML:
924: curp->outdata = html_alloc(curp->outopts);
925: break;
926: case OUTT_UTF8:
927: curp->outdata = utf8_alloc(curp->outopts);
928: break;
929: case OUTT_LOCALE:
930: curp->outdata = locale_alloc(curp->outopts);
931: break;
932: case OUTT_ASCII:
933: curp->outdata = ascii_alloc(curp->outopts);
934: break;
935: case OUTT_PDF:
936: curp->outdata = pdf_alloc(curp->outopts);
937: break;
938: case OUTT_PS:
939: curp->outdata = ps_alloc(curp->outopts);
940: break;
941: default:
942: break;
1.111 kristaps 943: }
1.186 schwarze 944: }
945:
1.227 schwarze 946: static void
1.197 schwarze 947: passthrough(const char *file, int fd, int synopsis_only)
1.186 schwarze 948: {
1.197 schwarze 949: const char synb[] = "S\bSY\bYN\bNO\bOP\bPS\bSI\bIS\bS";
950: const char synr[] = "SYNOPSIS";
951:
952: FILE *stream;
1.186 schwarze 953: const char *syscall;
1.257 schwarze 954: char *line, *cp;
955: size_t linesz;
1.277 schwarze 956: ssize_t len, written;
1.197 schwarze 957: int print;
1.210 schwarze 958:
1.257 schwarze 959: line = NULL;
960: linesz = 0;
1.197 schwarze 961:
1.277 schwarze 962: if (fflush(stdout) == EOF) {
963: syscall = "fflush";
964: goto fail;
965: }
966:
1.197 schwarze 967: if ((stream = fdopen(fd, "r")) == NULL) {
968: close(fd);
969: syscall = "fdopen";
970: goto fail;
971: }
1.186 schwarze 972:
1.197 schwarze 973: print = 0;
1.277 schwarze 974: while ((len = getline(&line, &linesz, stream)) != -1) {
1.257 schwarze 975: cp = line;
1.197 schwarze 976: if (synopsis_only) {
977: if (print) {
1.257 schwarze 978: if ( ! isspace((unsigned char)*cp))
1.197 schwarze 979: goto done;
1.277 schwarze 980: while (isspace((unsigned char)*cp)) {
1.257 schwarze 981: cp++;
1.277 schwarze 982: len--;
983: }
1.197 schwarze 984: } else {
1.257 schwarze 985: if (strcmp(cp, synb) == 0 ||
986: strcmp(cp, synr) == 0)
1.197 schwarze 987: print = 1;
988: continue;
989: }
990: }
1.277 schwarze 991: for (; len > 0; len -= written) {
992: if ((written = write(STDOUT_FILENO, cp, len)) != -1)
993: continue;
1.257 schwarze 994: fclose(stream);
1.277 schwarze 995: syscall = "write";
1.257 schwarze 996: goto fail;
997: }
1.197 schwarze 998: }
1.186 schwarze 999:
1.197 schwarze 1000: if (ferror(stream)) {
1001: fclose(stream);
1.257 schwarze 1002: syscall = "getline";
1.197 schwarze 1003: goto fail;
1004: }
1.193 schwarze 1005:
1.197 schwarze 1006: done:
1.257 schwarze 1007: free(line);
1.197 schwarze 1008: fclose(stream);
1.227 schwarze 1009: return;
1.186 schwarze 1010:
1011: fail:
1.257 schwarze 1012: free(line);
1.247 schwarze 1013: warn("%s: SYSERR: %s", file, syscall);
1.312 schwarze 1014: mandoc_msg_setrc(MANDOCLEVEL_SYSERR);
1.194 schwarze 1015: }
1016:
1017: static int
1018: koptions(int *options, char *arg)
1019: {
1020:
1021: if ( ! strcmp(arg, "utf-8")) {
1022: *options |= MPARSE_UTF8;
1023: *options &= ~MPARSE_LATIN1;
1024: } else if ( ! strcmp(arg, "iso-8859-1")) {
1025: *options |= MPARSE_LATIN1;
1026: *options &= ~MPARSE_UTF8;
1027: } else if ( ! strcmp(arg, "us-ascii")) {
1028: *options &= ~(MPARSE_UTF8 | MPARSE_LATIN1);
1029: } else {
1.247 schwarze 1030: warnx("-K %s: Bad argument", arg);
1.245 schwarze 1031: return 0;
1.194 schwarze 1032: }
1.245 schwarze 1033: return 1;
1.10 kristaps 1034: }
1035:
1.286 schwarze 1036: static void
1.170 schwarze 1037: moptions(int *options, char *arg)
1.10 kristaps 1038: {
1039:
1.180 schwarze 1040: if (arg == NULL)
1.286 schwarze 1041: return;
1042: if (strcmp(arg, "doc") == 0)
1.170 schwarze 1043: *options |= MPARSE_MDOC;
1.286 schwarze 1044: else if (strcmp(arg, "an") == 0)
1.170 schwarze 1045: *options |= MPARSE_MAN;
1.1 kristaps 1046: }
1047:
1048: static int
1.60 kristaps 1049: toptions(struct curparse *curp, char *arg)
1.1 kristaps 1050: {
1051:
1052: if (0 == strcmp(arg, "ascii"))
1.60 kristaps 1053: curp->outtype = OUTT_ASCII;
1054: else if (0 == strcmp(arg, "lint")) {
1055: curp->outtype = OUTT_LINT;
1.312 schwarze 1056: mandoc_msg_setoutfile(stdout);
1057: mandoc_msg_setmin(MANDOCERR_BASE);
1.154 kristaps 1058: } else if (0 == strcmp(arg, "tree"))
1.60 kristaps 1059: curp->outtype = OUTT_TREE;
1.164 schwarze 1060: else if (0 == strcmp(arg, "man"))
1061: curp->outtype = OUTT_MAN;
1.43 kristaps 1062: else if (0 == strcmp(arg, "html"))
1.60 kristaps 1063: curp->outtype = OUTT_HTML;
1.285 schwarze 1064: else if (0 == strcmp(arg, "markdown"))
1065: curp->outtype = OUTT_MARKDOWN;
1.163 kristaps 1066: else if (0 == strcmp(arg, "utf8"))
1067: curp->outtype = OUTT_UTF8;
1.162 kristaps 1068: else if (0 == strcmp(arg, "locale"))
1069: curp->outtype = OUTT_LOCALE;
1.85 kristaps 1070: else if (0 == strcmp(arg, "ps"))
1071: curp->outtype = OUTT_PS;
1.100 kristaps 1072: else if (0 == strcmp(arg, "pdf"))
1073: curp->outtype = OUTT_PDF;
1.1 kristaps 1074: else {
1.247 schwarze 1075: warnx("-T %s: Bad argument", arg);
1.245 schwarze 1076: return 0;
1.1 kristaps 1077: }
1078:
1.245 schwarze 1079: return 1;
1.1 kristaps 1080: }
1081:
1082: static int
1.103 schwarze 1083: woptions(struct curparse *curp, char *arg)
1.1 kristaps 1084: {
1.34 kristaps 1085: char *v, *o;
1.293 schwarze 1086: const char *toks[11];
1.1 kristaps 1087:
1.103 schwarze 1088: toks[0] = "stop";
1089: toks[1] = "all";
1.293 schwarze 1090: toks[2] = "base";
1091: toks[3] = "style";
1092: toks[4] = "warning";
1093: toks[5] = "error";
1094: toks[6] = "unsupp";
1095: toks[7] = "fatal";
1096: toks[8] = "openbsd";
1097: toks[9] = "netbsd";
1098: toks[10] = NULL;
1.1 kristaps 1099:
1.34 kristaps 1100: while (*arg) {
1101: o = arg;
1.272 schwarze 1102: switch (getsubopt(&arg, (char * const *)toks, &v)) {
1.173 schwarze 1103: case 0:
1.103 schwarze 1104: curp->wstop = 1;
1.1 kristaps 1105: break;
1.173 schwarze 1106: case 1:
1107: case 2:
1.312 schwarze 1108: mandoc_msg_setmin(MANDOCERR_BASE);
1.290 schwarze 1109: break;
1110: case 3:
1.312 schwarze 1111: mandoc_msg_setmin(MANDOCERR_STYLE);
1.1 kristaps 1112: break;
1.290 schwarze 1113: case 4:
1.312 schwarze 1114: mandoc_msg_setmin(MANDOCERR_WARNING);
1.24 kristaps 1115: break;
1.290 schwarze 1116: case 5:
1.312 schwarze 1117: mandoc_msg_setmin(MANDOCERR_ERROR);
1.217 schwarze 1118: break;
1.290 schwarze 1119: case 6:
1.312 schwarze 1120: mandoc_msg_setmin(MANDOCERR_UNSUPP);
1.293 schwarze 1121: break;
1122: case 7:
1.312 schwarze 1123: mandoc_msg_setmin(MANDOCERR_MAX);
1.293 schwarze 1124: break;
1125: case 8:
1.312 schwarze 1126: mandoc_msg_setmin(MANDOCERR_BASE);
1.293 schwarze 1127: curp->os_e = MANDOC_OS_OPENBSD;
1128: break;
1129: case 9:
1.312 schwarze 1130: mandoc_msg_setmin(MANDOCERR_BASE);
1.293 schwarze 1131: curp->os_e = MANDOC_OS_NETBSD;
1.50 kristaps 1132: break;
1.1 kristaps 1133: default:
1.247 schwarze 1134: warnx("-W %s: Bad argument", o);
1.245 schwarze 1135: return 0;
1.1 kristaps 1136: }
1.34 kristaps 1137: }
1.245 schwarze 1138: return 1;
1.183 schwarze 1139: }
1140:
1.225 schwarze 1141: static pid_t
1.244 schwarze 1142: spawn_pager(struct tag_files *tag_files)
1.183 schwarze 1143: {
1.265 schwarze 1144: const struct timespec timeout = { 0, 100000000 }; /* 0.1s */
1.184 schwarze 1145: #define MAX_PAGER_ARGS 16
1146: char *argv[MAX_PAGER_ARGS];
1147: const char *pager;
1148: char *cp;
1.239 schwarze 1149: size_t cmdlen;
1.309 schwarze 1150: int argc, use_ofn;
1.225 schwarze 1151: pid_t pager_pid;
1.183 schwarze 1152:
1.239 schwarze 1153: pager = getenv("MANPAGER");
1154: if (pager == NULL || *pager == '\0')
1155: pager = getenv("PAGER");
1156: if (pager == NULL || *pager == '\0')
1157: pager = "more -s";
1158: cp = mandoc_strdup(pager);
1159:
1160: /*
1161: * Parse the pager command into words.
1162: * Intentionally do not do anything fancy here.
1163: */
1164:
1165: argc = 0;
1.309 schwarze 1166: while (argc + 5 < MAX_PAGER_ARGS) {
1.239 schwarze 1167: argv[argc++] = cp;
1168: cp = strchr(cp, ' ');
1169: if (cp == NULL)
1170: break;
1171: *cp++ = '\0';
1172: while (*cp == ' ')
1173: cp++;
1174: if (*cp == '\0')
1175: break;
1176: }
1177:
1.268 schwarze 1178: /* For less(1), use the tag file. */
1.239 schwarze 1179:
1.309 schwarze 1180: use_ofn = 1;
1.244 schwarze 1181: if ((cmdlen = strlen(argv[0])) >= 4) {
1.239 schwarze 1182: cp = argv[0] + cmdlen - 4;
1.268 schwarze 1183: if (strcmp(cp, "less") == 0) {
1.244 schwarze 1184: argv[argc++] = mandoc_strdup("-T");
1185: argv[argc++] = tag_files->tfn;
1.309 schwarze 1186: if (tag_files->tagname != NULL) {
1187: argv[argc++] = mandoc_strdup("-t");
1188: argv[argc++] = tag_files->tagname;
1189: use_ofn = 0;
1190: }
1.244 schwarze 1191: }
1.239 schwarze 1192: }
1.309 schwarze 1193: if (use_ofn)
1194: argv[argc++] = tag_files->ofn;
1.239 schwarze 1195: argv[argc] = NULL;
1196:
1.225 schwarze 1197: switch (pager_pid = fork()) {
1.183 schwarze 1198: case -1:
1.247 schwarze 1199: err((int)MANDOCLEVEL_SYSERR, "fork");
1.183 schwarze 1200: case 0:
1.224 schwarze 1201: break;
1202: default:
1.258 schwarze 1203: (void)setpgid(pager_pid, 0);
1.279 schwarze 1204: (void)tcsetpgrp(tag_files->ofd, pager_pid);
1.255 schwarze 1205: #if HAVE_PLEDGE
1.258 schwarze 1206: if (pledge("stdio rpath tmppath tty proc", NULL) == -1)
1.255 schwarze 1207: err((int)MANDOCLEVEL_SYSERR, "pledge");
1208: #endif
1.259 schwarze 1209: tag_files->pager_pid = pager_pid;
1.245 schwarze 1210: return pager_pid;
1.184 schwarze 1211: }
1212:
1.224 schwarze 1213: /* The child process becomes the pager. */
1.184 schwarze 1214:
1.247 schwarze 1215: if (dup2(tag_files->ofd, STDOUT_FILENO) == -1)
1216: err((int)MANDOCLEVEL_SYSERR, "pager stdout");
1.244 schwarze 1217: close(tag_files->ofd);
1.303 schwarze 1218: assert(tag_files->tfd == -1);
1.265 schwarze 1219:
1220: /* Do not start the pager before controlling the terminal. */
1221:
1.279 schwarze 1222: while (tcgetpgrp(STDOUT_FILENO) != getpid())
1.265 schwarze 1223: nanosleep(&timeout, NULL);
1224:
1.184 schwarze 1225: execvp(argv[0], argv);
1.247 schwarze 1226: err((int)MANDOCLEVEL_SYSERR, "exec %s", argv[0]);
1.71 kristaps 1227: }
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