Annotation of src/usr.bin/mandoc/main.c, Revision 1.245
1.245 ! schwarze 1: /* $OpenBSD: main.c,v 1.244 2020/01/20 10:29:31 schwarze Exp $ */
1.1 kristaps 2: /*
1.95 schwarze 3: * Copyright (c) 2008-2012 Kristaps Dzonsons <kristaps@bsd.lv>
1.245 ! schwarze 4: * Copyright (c) 2010-2012, 2014-2020 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>
1.244 schwarze 32: #include <limits.h>
1.131 schwarze 33: #include <signal.h>
1.1 kristaps 34: #include <stdio.h>
1.17 schwarze 35: #include <stdint.h>
1.1 kristaps 36: #include <stdlib.h>
37: #include <string.h>
1.224 schwarze 38: #include <termios.h>
1.172 schwarze 39: #include <time.h>
1.1 kristaps 40: #include <unistd.h>
41:
1.136 schwarze 42: #include "mandoc_aux.h"
1.30 schwarze 43: #include "mandoc.h"
1.197 schwarze 44: #include "mandoc_xr.h"
1.136 schwarze 45: #include "roff.h"
1.1 kristaps 46: #include "mdoc.h"
47: #include "man.h"
1.214 schwarze 48: #include "mandoc_parse.h"
1.144 schwarze 49: #include "tag.h"
1.136 schwarze 50: #include "main.h"
1.134 schwarze 51: #include "manconf.h"
1.95 schwarze 52: #include "mansearch.h"
53:
1.235 schwarze 54: #define BINM_APROPOS "apropos"
55: #define BINM_MAN "man"
56: #define BINM_MAKEWHATIS "makewhatis"
57: #define BINM_WHATIS "whatis"
58: #define OSENUM MANDOC_OS_OPENBSD
59:
1.95 schwarze 60: enum outmode {
61: OUTMODE_DEF = 0,
62: OUTMODE_FLN,
63: OUTMODE_LST,
64: OUTMODE_ALL,
65: OUTMODE_ONE
66: };
1.1 kristaps 67:
68: enum outt {
1.76 schwarze 69: OUTT_ASCII = 0, /* -Tascii */
1.77 schwarze 70: OUTT_LOCALE, /* -Tlocale */
71: OUTT_UTF8, /* -Tutf8 */
1.76 schwarze 72: OUTT_TREE, /* -Ttree */
1.78 schwarze 73: OUTT_MAN, /* -Tman */
1.76 schwarze 74: OUTT_HTML, /* -Thtml */
1.188 schwarze 75: OUTT_MARKDOWN, /* -Tmarkdown */
1.76 schwarze 76: OUTT_LINT, /* -Tlint */
77: OUTT_PS, /* -Tps */
78: OUTT_PDF /* -Tpdf */
1.1 kristaps 79: };
80:
1.238 schwarze 81: struct outstate {
1.239 schwarze 82: struct tag_files *tag_files; /* Tagging state variables. */
1.196 schwarze 83: void *outdata; /* data for output */
1.239 schwarze 84: int use_pager;
1.75 schwarze 85: int wstop; /* stop after a file with a warning */
1.240 schwarze 86: int had_output; /* Some output was generated. */
1.90 schwarze 87: enum outt outtype; /* which output to use */
1.33 schwarze 88: };
1.174 schwarze 89:
90:
91: int mandocdb(int, char *[]);
1.33 schwarze 92:
1.215 schwarze 93: static void check_xr(void);
1.119 schwarze 94: static int fs_lookup(const struct manpaths *,
95: size_t ipath, const char *,
96: const char *, const char *,
97: struct manpage **, size_t *);
1.198 schwarze 98: static int fs_search(const struct mansearch *,
1.243 schwarze 99: const struct manpaths *, const char *,
1.119 schwarze 100: struct manpage **, size_t *);
1.238 schwarze 101: static void outdata_alloc(struct outstate *, struct manoutput *);
1.237 schwarze 102: static void parse(struct mparse *, int, const char *,
1.238 schwarze 103: struct outstate *, struct manoutput *);
1.231 schwarze 104: static void passthrough(int, int);
1.240 schwarze 105: static void process_onefile(struct mparse *, struct manpage *,
106: int, struct outstate *, struct manconf *);
1.236 schwarze 107: static void run_pager(struct tag_files *);
1.149 schwarze 108: static pid_t spawn_pager(struct tag_files *);
1.184 schwarze 109: static void usage(enum argmode) __attribute__((__noreturn__));
1.237 schwarze 110: static int woptions(char *, enum mandoc_os *, int *);
1.1 kristaps 111:
1.95 schwarze 112: static const int sec_prios[] = {1, 4, 5, 8, 6, 3, 7, 2, 9};
1.110 schwarze 113: static char help_arg[] = "help";
114: static char *help_argv[] = {help_arg, NULL};
1.1 kristaps 115:
1.90 schwarze 116:
1.1 kristaps 117: int
118: main(int argc, char *argv[])
119: {
1.237 schwarze 120: struct manconf conf; /* Manpaths and output options. */
1.238 schwarze 121: struct outstate outst; /* Output state. */
1.237 schwarze 122: struct winsize ws; /* Result of ioctl(TIOCGWINSZ). */
123: struct mansearch search; /* Search options. */
1.241 schwarze 124: struct manpage *res; /* Complete list of search results. */
125: struct manpage *resn; /* Search results for one name. */
1.237 schwarze 126: struct mparse *mp; /* Opaque parser object. */
127: const char *conf_file; /* -C: alternate config file. */
128: const char *os_s; /* -I: Operating system for display. */
1.240 schwarze 129: const char *progname, *sec;
1.237 schwarze 130: char *defpaths; /* -M: override manpaths. */
131: char *auxpaths; /* -m: additional manpaths. */
132: char *oarg; /* -O: output option string. */
133: char *tagarg; /* -O tag: default value. */
1.113 schwarze 134: unsigned char *uc;
1.241 schwarze 135: size_t ressz; /* Number of elements in res[]. */
136: size_t resnsz; /* Number of elements in resn[]. */
137: size_t i, ib, ssz;
1.237 schwarze 138: int options; /* Parser options. */
139: int show_usage; /* Invalid argument: give up. */
1.135 schwarze 140: int prio, best_prio;
1.240 schwarze 141: int startdir;
1.95 schwarze 142: int c;
1.237 schwarze 143: enum mandoc_os os_e; /* Check base system conventions. */
144: enum outmode outmode; /* According to command line. */
1.1 kristaps 145:
1.162 schwarze 146: progname = getprogname();
1.220 schwarze 147: mandoc_msg_setoutfile(stderr);
1.162 schwarze 148: if (strncmp(progname, "mandocdb", 8) == 0 ||
1.235 schwarze 149: strcmp(progname, BINM_MAKEWHATIS) == 0)
1.150 schwarze 150: return mandocdb(argc, argv);
1.19 schwarze 151:
1.231 schwarze 152: if (pledge("stdio rpath tmppath tty proc exec", NULL) == -1) {
153: mandoc_msg(MANDOCERR_PLEDGE, 0, 0, "%s", strerror(errno));
154: return mandoc_msg_getrc();
155: }
1.154 schwarze 156:
1.95 schwarze 157: /* Search options. */
158:
1.134 schwarze 159: memset(&conf, 0, sizeof(conf));
1.237 schwarze 160: conf_file = NULL;
161: defpaths = auxpaths = NULL;
1.95 schwarze 162:
163: memset(&search, 0, sizeof(struct mansearch));
164: search.outkey = "Nd";
1.186 schwarze 165: oarg = NULL;
1.95 schwarze 166:
1.235 schwarze 167: if (strcmp(progname, BINM_MAN) == 0)
1.95 schwarze 168: search.argmode = ARG_NAME;
1.235 schwarze 169: else if (strcmp(progname, BINM_APROPOS) == 0)
1.95 schwarze 170: search.argmode = ARG_EXPR;
1.235 schwarze 171: else if (strcmp(progname, BINM_WHATIS) == 0)
1.95 schwarze 172: search.argmode = ARG_WORD;
1.162 schwarze 173: else if (strncmp(progname, "help", 4) == 0)
1.110 schwarze 174: search.argmode = ARG_NAME;
1.95 schwarze 175: else
176: search.argmode = ARG_FILE;
177:
1.238 schwarze 178: /* Parser options. */
1.95 schwarze 179:
1.238 schwarze 180: options = MPARSE_SO | MPARSE_UTF8 | MPARSE_LATIN1;
1.237 schwarze 181: os_e = MANDOC_OS_OTHER;
182: os_s = NULL;
1.238 schwarze 183:
184: /* Formatter options. */
185:
186: memset(&outst, 0, sizeof(outst));
1.239 schwarze 187: outst.tag_files = NULL;
1.238 schwarze 188: outst.outtype = OUTT_LOCALE;
1.239 schwarze 189: outst.use_pager = 1;
1.1 kristaps 190:
1.95 schwarze 191: show_usage = 0;
192: outmode = OUTMODE_DEF;
193:
1.192 schwarze 194: while ((c = getopt(argc, argv,
195: "aC:cfhI:iK:klM:m:O:S:s:T:VW:w")) != -1) {
196: if (c == 'i' && search.argmode == ARG_EXPR) {
197: optind--;
198: break;
199: }
1.1 kristaps 200: switch (c) {
1.95 schwarze 201: case 'a':
202: outmode = OUTMODE_ALL;
203: break;
204: case 'C':
205: conf_file = optarg;
206: break;
207: case 'c':
1.239 schwarze 208: outst.use_pager = 0;
1.95 schwarze 209: break;
210: case 'f':
211: search.argmode = ARG_WORD;
212: break;
1.98 schwarze 213: case 'h':
1.135 schwarze 214: conf.output.synopsisonly = 1;
1.239 schwarze 215: outst.use_pager = 0;
1.98 schwarze 216: outmode = OUTMODE_ALL;
217: break;
1.90 schwarze 218: case 'I':
1.231 schwarze 219: if (strncmp(optarg, "os=", 3) != 0) {
220: mandoc_msg(MANDOCERR_BADARG_BAD, 0, 0,
221: "-I %s", optarg);
222: return mandoc_msg_getrc();
1.83 schwarze 223: }
1.237 schwarze 224: if (os_s != NULL) {
1.231 schwarze 225: mandoc_msg(MANDOCERR_BADARG_DUPE, 0, 0,
226: "-I %s", optarg);
227: return mandoc_msg_getrc();
1.83 schwarze 228: }
1.237 schwarze 229: os_s = optarg + 3;
1.95 schwarze 230: break;
1.103 schwarze 231: case 'K':
1.231 schwarze 232: options &= ~(MPARSE_UTF8 | MPARSE_LATIN1);
233: if (strcmp(optarg, "utf-8") == 0)
234: options |= MPARSE_UTF8;
235: else if (strcmp(optarg, "iso-8859-1") == 0)
236: options |= MPARSE_LATIN1;
237: else if (strcmp(optarg, "us-ascii") != 0) {
238: mandoc_msg(MANDOCERR_BADARG_BAD, 0, 0,
239: "-K %s", optarg);
240: return mandoc_msg_getrc();
241: }
1.103 schwarze 242: break;
1.95 schwarze 243: case 'k':
244: search.argmode = ARG_EXPR;
245: break;
1.96 schwarze 246: case 'l':
247: search.argmode = ARG_FILE;
248: outmode = OUTMODE_ALL;
249: break;
1.95 schwarze 250: case 'M':
251: defpaths = optarg;
252: break;
1.90 schwarze 253: case 'm':
1.95 schwarze 254: auxpaths = optarg;
1.1 kristaps 255: break;
1.90 schwarze 256: case 'O':
1.186 schwarze 257: oarg = optarg;
1.17 schwarze 258: break;
1.95 schwarze 259: case 'S':
260: search.arch = optarg;
261: break;
262: case 's':
263: search.sec = optarg;
264: break;
1.90 schwarze 265: case 'T':
1.231 schwarze 266: if (strcmp(optarg, "ascii") == 0)
1.238 schwarze 267: outst.outtype = OUTT_ASCII;
1.231 schwarze 268: else if (strcmp(optarg, "lint") == 0) {
1.238 schwarze 269: outst.outtype = OUTT_LINT;
1.231 schwarze 270: mandoc_msg_setoutfile(stdout);
271: mandoc_msg_setmin(MANDOCERR_BASE);
272: } else if (strcmp(optarg, "tree") == 0)
1.238 schwarze 273: outst.outtype = OUTT_TREE;
1.231 schwarze 274: else if (strcmp(optarg, "man") == 0)
1.238 schwarze 275: outst.outtype = OUTT_MAN;
1.231 schwarze 276: else if (strcmp(optarg, "html") == 0)
1.238 schwarze 277: outst.outtype = OUTT_HTML;
1.231 schwarze 278: else if (strcmp(optarg, "markdown") == 0)
1.238 schwarze 279: outst.outtype = OUTT_MARKDOWN;
1.231 schwarze 280: else if (strcmp(optarg, "utf8") == 0)
1.238 schwarze 281: outst.outtype = OUTT_UTF8;
1.231 schwarze 282: else if (strcmp(optarg, "locale") == 0)
1.238 schwarze 283: outst.outtype = OUTT_LOCALE;
1.231 schwarze 284: else if (strcmp(optarg, "ps") == 0)
1.238 schwarze 285: outst.outtype = OUTT_PS;
1.231 schwarze 286: else if (strcmp(optarg, "pdf") == 0)
1.238 schwarze 287: outst.outtype = OUTT_PDF;
1.231 schwarze 288: else {
289: mandoc_msg(MANDOCERR_BADARG_BAD, 0, 0,
290: "-T %s", optarg);
291: return mandoc_msg_getrc();
292: }
1.1 kristaps 293: break;
1.90 schwarze 294: case 'W':
1.238 schwarze 295: if (woptions(optarg, &os_e, &outst.wstop) == -1)
1.231 schwarze 296: return mandoc_msg_getrc();
1.1 kristaps 297: break;
1.95 schwarze 298: case 'w':
299: outmode = OUTMODE_FLN;
300: break;
1.1 kristaps 301: default:
1.95 schwarze 302: show_usage = 1;
303: break;
304: }
305: }
306:
307: if (show_usage)
308: usage(search.argmode);
309:
310: /* Postprocess options. */
311:
1.245 ! schwarze 312: switch (outmode) {
! 313: case OUTMODE_DEF:
1.95 schwarze 314: switch (search.argmode) {
315: case ARG_FILE:
316: outmode = OUTMODE_ALL;
1.239 schwarze 317: outst.use_pager = 0;
1.95 schwarze 318: break;
319: case ARG_NAME:
320: outmode = OUTMODE_ONE;
321: break;
322: default:
323: outmode = OUTMODE_LST;
324: break;
1.186 schwarze 325: }
1.245 ! schwarze 326: break;
! 327: case OUTMODE_FLN:
! 328: if (search.argmode == ARG_FILE)
! 329: outmode = OUTMODE_ALL;
! 330: break;
! 331: case OUTMODE_ALL:
! 332: break;
! 333: case OUTMODE_LST:
! 334: case OUTMODE_ONE:
! 335: abort();
1.186 schwarze 336: }
337:
338: if (oarg != NULL) {
339: if (outmode == OUTMODE_LST)
340: search.outkey = oarg;
341: else {
342: while (oarg != NULL) {
343: if (manconf_output(&conf.output,
1.229 schwarze 344: strsep(&oarg, ","), 0) == -1)
1.231 schwarze 345: return mandoc_msg_getrc();
1.186 schwarze 346: }
1.95 schwarze 347: }
348: }
349:
1.238 schwarze 350: if (outst.outtype != OUTT_TREE || conf.output.noval == 0)
1.218 schwarze 351: options |= MPARSE_VALIDATE;
352:
1.151 schwarze 353: if (outmode == OUTMODE_FLN ||
354: outmode == OUTMODE_LST ||
355: !isatty(STDOUT_FILENO))
1.239 schwarze 356: outst.use_pager = 0;
1.207 schwarze 357:
1.239 schwarze 358: if (outst.use_pager &&
1.207 schwarze 359: (conf.output.width == 0 || conf.output.indent == 0) &&
1.209 schwarze 360: ioctl(STDOUT_FILENO, TIOCGWINSZ, &ws) != -1 &&
361: ws.ws_col > 1) {
1.207 schwarze 362: if (conf.output.width == 0 && ws.ws_col < 79)
363: conf.output.width = ws.ws_col - 1;
364: if (conf.output.indent == 0 && ws.ws_col < 66)
365: conf.output.indent = 3;
366: }
1.151 schwarze 367:
1.239 schwarze 368: if (outst.use_pager == 0) {
1.231 schwarze 369: if (pledge("stdio rpath", NULL) == -1) {
370: mandoc_msg(MANDOCERR_PLEDGE, 0, 0,
371: "%s", strerror(errno));
372: return mandoc_msg_getrc();
373: }
374: }
1.154 schwarze 375:
1.95 schwarze 376: /* Parse arguments. */
377:
1.124 schwarze 378: if (argc > 0) {
379: argc -= optind;
380: argv += optind;
381: }
1.95 schwarze 382:
1.110 schwarze 383: /*
1.241 schwarze 384: * Quirks for help(1) and man(1),
385: * in particular for a section argument without -s.
1.110 schwarze 386: */
387:
388: if (search.argmode == ARG_NAME) {
1.162 schwarze 389: if (*progname == 'h') {
1.110 schwarze 390: if (argc == 0) {
391: argv = help_argv;
392: argc = 1;
393: }
1.117 schwarze 394: } else if (argc > 1 &&
1.128 schwarze 395: ((uc = (unsigned char *)argv[0]) != NULL) &&
1.113 schwarze 396: ((isdigit(uc[0]) && (uc[1] == '\0' ||
1.226 schwarze 397: isalpha(uc[1]))) ||
1.113 schwarze 398: (uc[0] == 'n' && uc[1] == '\0'))) {
1.128 schwarze 399: search.sec = (char *)uc;
1.110 schwarze 400: argv++;
401: argc--;
402: }
1.122 schwarze 403: if (search.arch == NULL)
404: search.arch = getenv("MACHINE");
405: if (search.arch == NULL)
406: search.arch = MACHINE;
1.241 schwarze 407: if (outmode == OUTMODE_ONE)
408: search.firstmatch = 1;
1.95 schwarze 409: }
410:
1.219 schwarze 411: /*
412: * Use the first argument for -O tag in addition to
413: * using it as a search term for man(1) or apropos(1).
414: */
415:
416: if (conf.output.tag != NULL && *conf.output.tag == '\0') {
417: tagarg = argc > 0 && search.argmode == ARG_EXPR ?
418: strchr(*argv, '=') : NULL;
419: conf.output.tag = tagarg == NULL ? *argv : tagarg + 1;
420: }
421:
1.241 schwarze 422: /* Read the configuration file. */
1.95 schwarze 423:
1.241 schwarze 424: if (search.argmode != ARG_FILE)
425: manconf_parse(&conf, conf_file, defpaths, auxpaths);
1.95 schwarze 426:
1.241 schwarze 427: /* man(1): Resolve each name individually. */
1.95 schwarze 428:
1.241 schwarze 429: if (search.argmode == ARG_NAME) {
430: if (argc < 1)
431: usage(ARG_NAME);
432: for (res = NULL, ressz = 0; argc > 0; argc--, argv++) {
433: (void)mansearch(&search, &conf.manpath,
434: 1, argv, &resn, &resnsz);
435: if (resnsz == 0)
436: (void)fs_search(&search, &conf.manpath,
1.243 schwarze 437: *argv, &resn, &resnsz);
438: if (resnsz == 0 && strchr(*argv, '/') == NULL) {
439: if (search.arch != NULL &&
440: arch_valid(search.arch, OSENUM) == 0)
441: warnx("Unknown architecture \"%s\".",
442: search.arch);
443: else if (search.sec != NULL)
444: warnx("No entry for %s in "
445: "section %s of the manual.",
446: *argv, search.sec);
447: else
448: warnx("No entry for %s in "
449: "the manual.", *argv);
450: mandoc_msg_setrc(MANDOCLEVEL_BADARG);
451: continue;
452: }
1.241 schwarze 453: if (resnsz == 0) {
454: if (access(*argv, R_OK) == -1) {
455: mandoc_msg_setinfilename(*argv);
1.231 schwarze 456: mandoc_msg(MANDOCERR_BADARG_BAD,
457: 0, 0, "%s", strerror(errno));
458: mandoc_msg_setinfilename(NULL);
1.208 schwarze 459: continue;
460: }
1.241 schwarze 461: resnsz = 1;
462: resn = mandoc_calloc(resnsz, sizeof(*res));
463: resn->file = mandoc_strdup(*argv);
464: resn->ipath = SIZE_MAX;
465: resn->form = FORM_SRC;
466: }
467: if (outmode != OUTMODE_ONE || resnsz == 1) {
1.208 schwarze 468: res = mandoc_reallocarray(res,
1.241 schwarze 469: ressz + resnsz, sizeof(*res));
470: memcpy(res + ressz, resn,
471: sizeof(*resn) * resnsz);
472: ressz += resnsz;
473: continue;
1.208 schwarze 474: }
1.95 schwarze 475:
1.241 schwarze 476: /* Search for the best section. */
1.95 schwarze 477:
1.227 schwarze 478: best_prio = 40;
1.241 schwarze 479: for (ib = i = 0; i < resnsz; i++) {
480: sec = resn[i].file;
1.171 schwarze 481: sec += strcspn(sec, "123456789");
482: if (sec[0] == '\0')
1.227 schwarze 483: continue; /* No section at all. */
1.171 schwarze 484: prio = sec_prios[sec[0] - '1'];
1.227 schwarze 485: if (search.sec != NULL) {
486: ssz = strlen(search.sec);
487: if (strncmp(sec, search.sec, ssz) == 0)
488: sec += ssz;
489: } else
490: sec++; /* Prefer without suffix. */
491: if (*sec != '/')
492: prio += 10; /* Wrong dir name. */
493: if (search.sec != NULL &&
494: (strlen(sec) <= ssz + 3 ||
495: strcmp(sec + strlen(sec) - ssz,
496: search.sec) != 0))
497: prio += 20; /* Wrong file ext. */
1.95 schwarze 498: if (prio >= best_prio)
499: continue;
500: best_prio = prio;
1.241 schwarze 501: ib = i;
1.95 schwarze 502: }
1.241 schwarze 503: res = mandoc_reallocarray(res, ressz + 1,
504: sizeof(*res));
505: memcpy(res + ressz++, resn + ib, sizeof(*resn));
1.1 kristaps 506: }
507:
1.241 schwarze 508: /* apropos(1), whatis(1): Process the full search expression. */
509:
510: } else if (search.argmode != ARG_FILE) {
511: if (mansearch(&search, &conf.manpath,
512: argc, argv, &res, &ressz) == 0)
513: usage(search.argmode);
1.95 schwarze 514:
1.241 schwarze 515: if (ressz == 0) {
516: warnx("nothing appropriate");
517: mandoc_msg_setrc(MANDOCLEVEL_BADARG);
1.95 schwarze 518: goto out;
1.241 schwarze 519: }
520:
521: /* mandoc(1): Take command line arguments as file names. */
522:
1.240 schwarze 523: } else {
1.241 schwarze 524: ressz = argc > 0 ? argc : 1;
525: res = mandoc_calloc(ressz, sizeof(*res));
526: for (i = 0; i < ressz; i++) {
1.240 schwarze 527: if (argc > 0)
528: res[i].file = mandoc_strdup(argv[i]);
529: res[i].ipath = SIZE_MAX;
530: res[i].form = FORM_SRC;
531: }
1.95 schwarze 532: }
533:
1.241 schwarze 534: switch (outmode) {
535: case OUTMODE_FLN:
536: for (i = 0; i < ressz; i++)
537: puts(res[i].file);
538: goto out;
539: case OUTMODE_LST:
540: for (i = 0; i < ressz; i++)
541: printf("%s - %s\n", res[i].names,
542: res[i].output == NULL ? "" :
543: res[i].output);
544: goto out;
545: default:
546: break;
1.167 schwarze 547: }
1.95 schwarze 548:
1.231 schwarze 549: if (search.argmode == ARG_FILE && auxpaths != NULL) {
550: if (strcmp(auxpaths, "doc") == 0)
551: options |= MPARSE_MDOC;
552: else if (strcmp(auxpaths, "an") == 0)
553: options |= MPARSE_MAN;
554: }
1.146 schwarze 555:
1.155 schwarze 556: mchars_alloc();
1.237 schwarze 557: mp = mparse_alloc(options, os_e, os_s);
1.76 schwarze 558:
1.208 schwarze 559: /*
560: * Remember the original working directory, if possible.
561: * This will be needed if some names on the command line
562: * are page names and some are relative file names.
563: * Do not error out if the current directory is not
564: * readable: Maybe it won't be needed after all.
565: */
566: startdir = open(".", O_RDONLY | O_DIRECTORY);
567:
1.241 schwarze 568: for (i = 0; i < ressz; i++) {
569: process_onefile(mp, res + i, startdir, &outst, &conf);
1.238 schwarze 570: if (outst.wstop && mandoc_msg_getrc() != MANDOCLEVEL_OK)
1.27 schwarze 571: break;
1.1 kristaps 572: }
1.208 schwarze 573: if (startdir != -1) {
574: (void)fchdir(startdir);
575: close(startdir);
576: }
1.1 kristaps 577:
1.238 schwarze 578: if (outst.outdata != NULL) {
579: switch (outst.outtype) {
1.160 schwarze 580: case OUTT_HTML:
1.238 schwarze 581: html_free(outst.outdata);
1.160 schwarze 582: break;
583: case OUTT_UTF8:
584: case OUTT_LOCALE:
585: case OUTT_ASCII:
1.238 schwarze 586: ascii_free(outst.outdata);
1.160 schwarze 587: break;
588: case OUTT_PDF:
589: case OUTT_PS:
1.238 schwarze 590: pspdf_free(outst.outdata);
1.160 schwarze 591: break;
592: default:
593: break;
594: }
1.158 schwarze 595: }
1.197 schwarze 596: mandoc_xr_free();
1.237 schwarze 597: mparse_free(mp);
1.155 schwarze 598: mchars_free();
1.95 schwarze 599:
600: out:
1.241 schwarze 601: mansearch_free(res, ressz);
1.240 schwarze 602: if (search.argmode != ARG_FILE)
1.134 schwarze 603: manconf_free(&conf);
1.1 kristaps 604:
1.239 schwarze 605: if (outst.tag_files != NULL) {
1.130 schwarze 606: fclose(stdout);
1.144 schwarze 607: tag_write();
1.239 schwarze 608: run_pager(outst.tag_files);
1.144 schwarze 609: tag_unlink();
1.240 schwarze 610: } else if (outst.had_output && outst.outtype != OUTT_LINT)
1.232 schwarze 611: mandoc_msg_summary();
612:
1.215 schwarze 613: return (int)mandoc_msg_getrc();
1.1 kristaps 614: }
615:
1.20 schwarze 616: static void
1.95 schwarze 617: usage(enum argmode argmode)
1.1 kristaps 618: {
1.95 schwarze 619: switch (argmode) {
620: case ARG_FILE:
1.190 schwarze 621: fputs("usage: mandoc [-ac] [-I os=name] "
622: "[-K encoding] [-mdoc | -man] [-O options]\n"
1.133 schwarze 623: "\t [-T output] [-W level] [file ...]\n", stderr);
1.95 schwarze 624: break;
625: case ARG_NAME:
1.190 schwarze 626: fputs("usage: man [-acfhklw] [-C file] [-M path] "
627: "[-m path] [-S subsection]\n"
628: "\t [[-s] section] name ...\n", stderr);
1.95 schwarze 629: break;
630: case ARG_WORD:
1.190 schwarze 631: fputs("usage: whatis [-afk] [-C file] "
1.96 schwarze 632: "[-M path] [-m path] [-O outkey] [-S arch]\n"
633: "\t [-s section] name ...\n", stderr);
1.95 schwarze 634: break;
635: case ARG_EXPR:
1.190 schwarze 636: fputs("usage: apropos [-afk] [-C file] "
1.96 schwarze 637: "[-M path] [-m path] [-O outkey] [-S arch]\n"
1.95 schwarze 638: "\t [-s section] expression ...\n", stderr);
639: break;
640: }
1.47 schwarze 641: exit((int)MANDOCLEVEL_BADARG);
1.119 schwarze 642: }
643:
644: static int
645: fs_lookup(const struct manpaths *paths, size_t ipath,
646: const char *sec, const char *arch, const char *name,
647: struct manpage **res, size_t *ressz)
648: {
1.228 schwarze 649: struct stat sb;
1.127 schwarze 650: glob_t globinfo;
1.119 schwarze 651: struct manpage *page;
652: char *file;
1.177 schwarze 653: int globres;
654: enum form form;
1.119 schwarze 655:
1.127 schwarze 656: form = FORM_SRC;
1.119 schwarze 657: mandoc_asprintf(&file, "%s/man%s/%s.%s",
658: paths->paths[ipath], sec, name, sec);
1.228 schwarze 659: if (stat(file, &sb) != -1)
1.119 schwarze 660: goto found;
661: free(file);
662:
663: mandoc_asprintf(&file, "%s/cat%s/%s.0",
664: paths->paths[ipath], sec, name);
1.228 schwarze 665: if (stat(file, &sb) != -1) {
1.119 schwarze 666: form = FORM_CAT;
667: goto found;
668: }
669: free(file);
670:
671: if (arch != NULL) {
672: mandoc_asprintf(&file, "%s/man%s/%s/%s.%s",
673: paths->paths[ipath], sec, arch, name, sec);
1.228 schwarze 674: if (stat(file, &sb) != -1)
1.119 schwarze 675: goto found;
676: free(file);
677: }
1.127 schwarze 678:
1.145 schwarze 679: mandoc_asprintf(&file, "%s/man%s/%s.[01-9]*",
1.127 schwarze 680: paths->paths[ipath], sec, name);
681: globres = glob(file, 0, NULL, &globinfo);
682: if (globres != 0 && globres != GLOB_NOMATCH)
1.231 schwarze 683: mandoc_msg(MANDOCERR_GLOB, 0, 0,
684: "%s: %s", file, strerror(errno));
1.127 schwarze 685: free(file);
686: if (globres == 0)
687: file = mandoc_strdup(*globinfo.gl_pathv);
688: globfree(&globinfo);
1.228 schwarze 689: if (globres == 0) {
690: if (stat(file, &sb) != -1)
691: goto found;
692: free(file);
693: }
1.199 schwarze 694: if (res != NULL || ipath + 1 != paths->sz)
1.231 schwarze 695: return -1;
1.119 schwarze 696:
1.199 schwarze 697: mandoc_asprintf(&file, "%s.%s", name, sec);
1.228 schwarze 698: globres = stat(file, &sb);
1.199 schwarze 699: free(file);
1.231 schwarze 700: return globres;
1.199 schwarze 701:
1.119 schwarze 702: found:
1.235 schwarze 703: warnx("outdated mandoc.db lacks %s(%s) entry, run %s %s",
704: name, sec, BINM_MAKEWHATIS, paths->paths[ipath]);
1.199 schwarze 705: if (res == NULL) {
706: free(file);
1.231 schwarze 707: return 0;
1.199 schwarze 708: }
1.231 schwarze 709: *res = mandoc_reallocarray(*res, ++*ressz, sizeof(**res));
1.119 schwarze 710: page = *res + (*ressz - 1);
711: page->file = file;
712: page->names = NULL;
713: page->output = NULL;
1.225 schwarze 714: page->bits = NAME_FILE & NAME_MASK;
1.119 schwarze 715: page->ipath = ipath;
716: page->sec = (*sec >= '1' && *sec <= '9') ? *sec - '1' + 1 : 10;
717: page->form = form;
1.231 schwarze 718: return 0;
1.119 schwarze 719: }
720:
1.198 schwarze 721: static int
1.119 schwarze 722: fs_search(const struct mansearch *cfg, const struct manpaths *paths,
1.243 schwarze 723: const char *name, struct manpage **res, size_t *ressz)
1.119 schwarze 724: {
725: const char *const sections[] =
1.171 schwarze 726: {"1", "8", "6", "2", "3", "5", "7", "4", "9", "3p"};
1.119 schwarze 727: const size_t nsec = sizeof(sections)/sizeof(sections[0]);
728:
1.243 schwarze 729: size_t ipath, isec;
1.119 schwarze 730:
731: assert(cfg->argmode == ARG_NAME);
1.198 schwarze 732: if (res != NULL)
733: *res = NULL;
1.243 schwarze 734: *ressz = 0;
735: for (ipath = 0; ipath < paths->sz; ipath++) {
736: if (cfg->sec != NULL) {
737: if (fs_lookup(paths, ipath, cfg->sec, cfg->arch,
738: name, res, ressz) != -1 && cfg->firstmatch)
739: return 0;
740: } else {
741: for (isec = 0; isec < nsec; isec++)
1.119 schwarze 742: if (fs_lookup(paths, ipath, sections[isec],
1.243 schwarze 743: cfg->arch, name, res, ressz) != -1 &&
1.119 schwarze 744: cfg->firstmatch)
1.231 schwarze 745: return 0;
1.119 schwarze 746: }
747: }
1.231 schwarze 748: return -1;
1.1 kristaps 749: }
750:
1.27 schwarze 751: static void
1.240 schwarze 752: process_onefile(struct mparse *mp, struct manpage *resp, int startdir,
753: struct outstate *outst, struct manconf *conf)
754: {
755: int fd;
756:
757: /*
758: * Changing directories is not needed in ARG_FILE mode.
759: * Do it on a best-effort basis. Even in case of
760: * failure, some functionality may still work.
761: */
762: if (resp->ipath != SIZE_MAX)
763: (void)chdir(conf->manpath.paths[resp->ipath]);
764: else if (startdir != -1)
765: (void)fchdir(startdir);
766:
767: mandoc_msg_setinfilename(resp->file);
768: if (resp->file != NULL) {
769: if ((fd = mparse_open(mp, resp->file)) == -1) {
770: mandoc_msg(resp->ipath == SIZE_MAX ?
771: MANDOCERR_BADARG_BAD : MANDOCERR_OPEN,
772: 0, 0, "%s", strerror(errno));
773: mandoc_msg_setinfilename(NULL);
774: return;
775: }
776: } else
777: fd = STDIN_FILENO;
778:
779: if (outst->use_pager) {
780: outst->use_pager = 0;
781: outst->tag_files = tag_init(conf->output.tag);
782: }
783:
784: if (outst->had_output && outst->outtype <= OUTT_UTF8) {
785: if (outst->outdata == NULL)
786: outdata_alloc(outst, &conf->output);
787: terminal_sepline(outst->outdata);
788: }
789:
790: if (resp->form == FORM_SRC)
791: parse(mp, fd, resp->file, outst, &conf->output);
792: else {
793: passthrough(fd, conf->output.synopsisonly);
794: outst->had_output = 1;
795: }
796:
797: if (ferror(stdout)) {
798: if (outst->tag_files != NULL) {
799: mandoc_msg(MANDOCERR_WRITE, 0, 0, "%s: %s",
800: outst->tag_files->ofn, strerror(errno));
801: tag_unlink();
802: outst->tag_files = NULL;
803: } else
804: mandoc_msg(MANDOCERR_WRITE, 0, 0, "%s",
805: strerror(errno));
806: }
807: mandoc_msg_setinfilename(NULL);
808: }
809:
810: static void
1.238 schwarze 811: parse(struct mparse *mp, int fd, const char *file,
812: struct outstate *outst, struct manoutput *outconf)
1.52 schwarze 813: {
1.240 schwarze 814: static int previous;
815: struct roff_meta *meta;
1.52 schwarze 816:
1.240 schwarze 817: assert(fd >= 0);
818: if (file == NULL)
819: file = "<stdin>";
1.52 schwarze 820:
1.240 schwarze 821: if (previous)
822: mparse_reset(mp);
823: else
824: previous = 1;
1.52 schwarze 825:
1.237 schwarze 826: mparse_readfd(mp, fd, file);
1.168 schwarze 827: if (fd != STDIN_FILENO)
828: close(fd);
1.1 kristaps 829:
1.51 schwarze 830: /*
1.76 schwarze 831: * With -Wstop and warnings or errors of at least the requested
832: * level, do not produce output.
1.51 schwarze 833: */
834:
1.238 schwarze 835: if (outst->wstop && mandoc_msg_getrc() != MANDOCLEVEL_OK)
1.132 schwarze 836: return;
1.51 schwarze 837:
1.238 schwarze 838: if (outst->outdata == NULL)
839: outdata_alloc(outst, outconf);
840: else if (outst->outtype == OUTT_HTML)
841: html_reset(outst);
1.51 schwarze 842:
1.218 schwarze 843: mandoc_xr_reset();
1.237 schwarze 844: meta = mparse_result(mp);
1.158 schwarze 845:
846: /* Execute the out device, if it exists. */
847:
1.240 schwarze 848: outst->had_output = 1;
1.218 schwarze 849: if (meta->macroset == MACROSET_MDOC) {
1.238 schwarze 850: switch (outst->outtype) {
1.90 schwarze 851: case OUTT_HTML:
1.238 schwarze 852: html_mdoc(outst->outdata, meta);
1.51 schwarze 853: break;
1.90 schwarze 854: case OUTT_TREE:
1.238 schwarze 855: tree_mdoc(outst->outdata, meta);
1.51 schwarze 856: break;
1.90 schwarze 857: case OUTT_MAN:
1.238 schwarze 858: man_mdoc(outst->outdata, meta);
1.78 schwarze 859: break;
1.90 schwarze 860: case OUTT_PDF:
861: case OUTT_ASCII:
862: case OUTT_UTF8:
863: case OUTT_LOCALE:
864: case OUTT_PS:
1.238 schwarze 865: terminal_mdoc(outst->outdata, meta);
1.158 schwarze 866: break;
1.188 schwarze 867: case OUTT_MARKDOWN:
1.238 schwarze 868: markdown_mdoc(outst->outdata, meta);
1.188 schwarze 869: break;
1.158 schwarze 870: default:
871: break;
872: }
873: }
1.218 schwarze 874: if (meta->macroset == MACROSET_MAN) {
1.238 schwarze 875: switch (outst->outtype) {
1.158 schwarze 876: case OUTT_HTML:
1.238 schwarze 877: html_man(outst->outdata, meta);
1.158 schwarze 878: break;
879: case OUTT_TREE:
1.238 schwarze 880: tree_man(outst->outdata, meta);
1.158 schwarze 881: break;
882: case OUTT_MAN:
1.237 schwarze 883: mparse_copy(mp);
1.158 schwarze 884: break;
885: case OUTT_PDF:
886: case OUTT_ASCII:
887: case OUTT_UTF8:
888: case OUTT_LOCALE:
889: case OUTT_PS:
1.238 schwarze 890: terminal_man(outst->outdata, meta);
1.51 schwarze 891: break;
892: default:
893: break;
894: }
1.179 schwarze 895: }
1.215 schwarze 896: if (mandoc_msg_getmin() < MANDOCERR_STYLE)
897: check_xr();
1.197 schwarze 898: }
899:
900: static void
1.215 schwarze 901: check_xr(void)
1.197 schwarze 902: {
903: static struct manpaths paths;
904: struct mansearch search;
905: struct mandoc_xr *xr;
906: size_t sz;
907:
908: if (paths.sz == 0)
909: manpath_base(&paths);
910:
911: for (xr = mandoc_xr_get(); xr != NULL; xr = xr->next) {
1.200 schwarze 912: if (xr->line == -1)
913: continue;
1.197 schwarze 914: search.arch = NULL;
915: search.sec = xr->sec;
916: search.outkey = NULL;
917: search.argmode = ARG_NAME;
918: search.firstmatch = 1;
919: if (mansearch(&search, &paths, 1, &xr->name, NULL, &sz))
1.198 schwarze 920: continue;
1.243 schwarze 921: if (fs_search(&search, &paths, xr->name, NULL, &sz) != -1)
1.197 schwarze 922: continue;
1.201 schwarze 923: if (xr->count == 1)
1.216 schwarze 924: mandoc_msg(MANDOCERR_XR_BAD, xr->line,
925: xr->pos + 1, "Xr %s %s", xr->name, xr->sec);
1.201 schwarze 926: else
1.216 schwarze 927: mandoc_msg(MANDOCERR_XR_BAD, xr->line,
928: xr->pos + 1, "Xr %s %s (%d times)",
1.201 schwarze 929: xr->name, xr->sec, xr->count);
1.197 schwarze 930: }
1.179 schwarze 931: }
932:
933: static void
1.238 schwarze 934: outdata_alloc(struct outstate *outst, struct manoutput *outconf)
1.179 schwarze 935: {
1.238 schwarze 936: switch (outst->outtype) {
1.179 schwarze 937: case OUTT_HTML:
1.238 schwarze 938: outst->outdata = html_alloc(outconf);
1.179 schwarze 939: break;
940: case OUTT_UTF8:
1.238 schwarze 941: outst->outdata = utf8_alloc(outconf);
1.179 schwarze 942: break;
943: case OUTT_LOCALE:
1.238 schwarze 944: outst->outdata = locale_alloc(outconf);
1.179 schwarze 945: break;
946: case OUTT_ASCII:
1.238 schwarze 947: outst->outdata = ascii_alloc(outconf);
1.179 schwarze 948: break;
949: case OUTT_PDF:
1.238 schwarze 950: outst->outdata = pdf_alloc(outconf);
1.179 schwarze 951: break;
952: case OUTT_PS:
1.238 schwarze 953: outst->outdata = ps_alloc(outconf);
1.179 schwarze 954: break;
955: default:
956: break;
1.51 schwarze 957: }
1.1 kristaps 958: }
959:
1.132 schwarze 960: static void
1.231 schwarze 961: passthrough(int fd, int synopsis_only)
1.95 schwarze 962: {
1.105 schwarze 963: const char synb[] = "S\bSY\bYN\bNO\bOP\bPS\bSI\bIS\bS";
964: const char synr[] = "SYNOPSIS";
965:
966: FILE *stream;
1.164 schwarze 967: char *line, *cp;
968: size_t linesz;
1.180 schwarze 969: ssize_t len, written;
1.231 schwarze 970: int lno, print;
1.116 schwarze 971:
1.231 schwarze 972: stream = NULL;
1.164 schwarze 973: line = NULL;
974: linesz = 0;
1.105 schwarze 975:
1.180 schwarze 976: if (fflush(stdout) == EOF) {
1.231 schwarze 977: mandoc_msg(MANDOCERR_FFLUSH, 0, 0, "%s", strerror(errno));
978: goto done;
1.180 schwarze 979: }
1.105 schwarze 980: if ((stream = fdopen(fd, "r")) == NULL) {
981: close(fd);
1.231 schwarze 982: mandoc_msg(MANDOCERR_FDOPEN, 0, 0, "%s", strerror(errno));
983: goto done;
1.105 schwarze 984: }
1.95 schwarze 985:
1.231 schwarze 986: lno = print = 0;
1.180 schwarze 987: while ((len = getline(&line, &linesz, stream)) != -1) {
1.231 schwarze 988: lno++;
1.164 schwarze 989: cp = line;
1.105 schwarze 990: if (synopsis_only) {
991: if (print) {
1.164 schwarze 992: if ( ! isspace((unsigned char)*cp))
1.105 schwarze 993: goto done;
1.180 schwarze 994: while (isspace((unsigned char)*cp)) {
1.164 schwarze 995: cp++;
1.180 schwarze 996: len--;
997: }
1.105 schwarze 998: } else {
1.164 schwarze 999: if (strcmp(cp, synb) == 0 ||
1000: strcmp(cp, synr) == 0)
1.105 schwarze 1001: print = 1;
1002: continue;
1003: }
1004: }
1.180 schwarze 1005: for (; len > 0; len -= written) {
1.231 schwarze 1006: if ((written = write(STDOUT_FILENO, cp, len)) == -1) {
1007: mandoc_msg(MANDOCERR_WRITE, 0, 0,
1008: "%s", strerror(errno));
1009: goto done;
1010: }
1.164 schwarze 1011: }
1.105 schwarze 1012: }
1.231 schwarze 1013: if (ferror(stream))
1014: mandoc_msg(MANDOCERR_GETLINE, lno, 0, "%s", strerror(errno));
1.101 schwarze 1015:
1.105 schwarze 1016: done:
1.164 schwarze 1017: free(line);
1.231 schwarze 1018: if (stream != NULL)
1019: fclose(stream);
1.1 kristaps 1020: }
1021:
1022: static int
1.237 schwarze 1023: woptions(char *arg, enum mandoc_os *os_e, int *wstop)
1.1 kristaps 1024: {
1.10 schwarze 1025: char *v, *o;
1.196 schwarze 1026: const char *toks[11];
1.1 kristaps 1027:
1.45 schwarze 1028: toks[0] = "stop";
1029: toks[1] = "all";
1.196 schwarze 1030: toks[2] = "base";
1031: toks[3] = "style";
1032: toks[4] = "warning";
1033: toks[5] = "error";
1034: toks[6] = "unsupp";
1035: toks[7] = "fatal";
1036: toks[8] = "openbsd";
1037: toks[9] = "netbsd";
1038: toks[10] = NULL;
1.1 kristaps 1039:
1.10 schwarze 1040: while (*arg) {
1041: o = arg;
1.176 schwarze 1042: switch (getsubopt(&arg, (char * const *)toks, &v)) {
1.90 schwarze 1043: case 0:
1.237 schwarze 1044: *wstop = 1;
1.1 kristaps 1045: break;
1.90 schwarze 1046: case 1:
1047: case 2:
1.215 schwarze 1048: mandoc_msg_setmin(MANDOCERR_BASE);
1.193 schwarze 1049: break;
1050: case 3:
1.215 schwarze 1051: mandoc_msg_setmin(MANDOCERR_STYLE);
1.1 kristaps 1052: break;
1.193 schwarze 1053: case 4:
1.215 schwarze 1054: mandoc_msg_setmin(MANDOCERR_WARNING);
1.1 kristaps 1055: break;
1.193 schwarze 1056: case 5:
1.215 schwarze 1057: mandoc_msg_setmin(MANDOCERR_ERROR);
1.123 schwarze 1058: break;
1.193 schwarze 1059: case 6:
1.215 schwarze 1060: mandoc_msg_setmin(MANDOCERR_UNSUPP);
1.196 schwarze 1061: break;
1062: case 7:
1.231 schwarze 1063: mandoc_msg_setmin(MANDOCERR_BADARG);
1.196 schwarze 1064: break;
1065: case 8:
1.215 schwarze 1066: mandoc_msg_setmin(MANDOCERR_BASE);
1.237 schwarze 1067: *os_e = MANDOC_OS_OPENBSD;
1.196 schwarze 1068: break;
1069: case 9:
1.215 schwarze 1070: mandoc_msg_setmin(MANDOCERR_BASE);
1.237 schwarze 1071: *os_e = MANDOC_OS_NETBSD;
1.19 schwarze 1072: break;
1.1 kristaps 1073: default:
1.231 schwarze 1074: mandoc_msg(MANDOCERR_BADARG_BAD, 0, 0, "-W %s", o);
1075: return -1;
1.1 kristaps 1076: }
1.10 schwarze 1077: }
1.231 schwarze 1078: return 0;
1.236 schwarze 1079: }
1080:
1081: /*
1082: * Wait until moved to the foreground,
1083: * then fork the pager and wait for the user to close it.
1084: */
1085: static void
1086: run_pager(struct tag_files *tag_files)
1087: {
1088: int signum, status;
1089: pid_t man_pgid, tc_pgid;
1090: pid_t pager_pid, wait_pid;
1091:
1092: man_pgid = getpgid(0);
1093: tag_files->tcpgid = man_pgid == getpid() ? getpgid(getppid()) :
1094: man_pgid;
1095: pager_pid = 0;
1096: signum = SIGSTOP;
1097:
1098: for (;;) {
1099: /* Stop here until moved to the foreground. */
1100:
1101: tc_pgid = tcgetpgrp(tag_files->ofd);
1102: if (tc_pgid != man_pgid) {
1103: if (tc_pgid == pager_pid) {
1104: (void)tcsetpgrp(tag_files->ofd, man_pgid);
1105: if (signum == SIGTTIN)
1106: continue;
1107: } else
1108: tag_files->tcpgid = tc_pgid;
1109: kill(0, signum);
1110: continue;
1111: }
1112:
1113: /* Once in the foreground, activate the pager. */
1114:
1115: if (pager_pid) {
1116: (void)tcsetpgrp(tag_files->ofd, pager_pid);
1117: kill(pager_pid, SIGCONT);
1118: } else
1119: pager_pid = spawn_pager(tag_files);
1120:
1121: /* Wait for the pager to stop or exit. */
1122:
1123: while ((wait_pid = waitpid(pager_pid, &status,
1124: WUNTRACED)) == -1 && errno == EINTR)
1125: continue;
1126:
1127: if (wait_pid == -1) {
1128: mandoc_msg(MANDOCERR_WAIT, 0, 0,
1129: "%s", strerror(errno));
1130: break;
1131: }
1132: if (!WIFSTOPPED(status))
1133: break;
1134:
1135: signum = WSTOPSIG(status);
1136: }
1.95 schwarze 1137: }
1138:
1.130 schwarze 1139: static pid_t
1.149 schwarze 1140: spawn_pager(struct tag_files *tag_files)
1.95 schwarze 1141: {
1.172 schwarze 1142: const struct timespec timeout = { 0, 100000000 }; /* 0.1s */
1.95 schwarze 1143: #define MAX_PAGER_ARGS 16
1144: char *argv[MAX_PAGER_ARGS];
1145: const char *pager;
1146: char *cp;
1.144 schwarze 1147: size_t cmdlen;
1.212 schwarze 1148: int argc, use_ofn;
1.130 schwarze 1149: pid_t pager_pid;
1.95 schwarze 1150:
1.144 schwarze 1151: pager = getenv("MANPAGER");
1152: if (pager == NULL || *pager == '\0')
1153: pager = getenv("PAGER");
1154: if (pager == NULL || *pager == '\0')
1155: pager = "more -s";
1156: cp = mandoc_strdup(pager);
1157:
1158: /*
1159: * Parse the pager command into words.
1160: * Intentionally do not do anything fancy here.
1161: */
1162:
1163: argc = 0;
1.212 schwarze 1164: while (argc + 5 < MAX_PAGER_ARGS) {
1.144 schwarze 1165: argv[argc++] = cp;
1166: cp = strchr(cp, ' ');
1167: if (cp == NULL)
1168: break;
1169: *cp++ = '\0';
1170: while (*cp == ' ')
1171: cp++;
1172: if (*cp == '\0')
1173: break;
1174: }
1175:
1.149 schwarze 1176: /* For more(1) and less(1), use the tag file. */
1.144 schwarze 1177:
1.212 schwarze 1178: use_ofn = 1;
1.234 schwarze 1179: if (*tag_files->tfn != '\0' && (cmdlen = strlen(argv[0])) >= 4) {
1.144 schwarze 1180: cp = argv[0] + cmdlen - 4;
1.149 schwarze 1181: if (strcmp(cp, "less") == 0 || strcmp(cp, "more") == 0) {
1182: argv[argc++] = mandoc_strdup("-T");
1183: argv[argc++] = tag_files->tfn;
1.212 schwarze 1184: if (tag_files->tagname != NULL) {
1185: argv[argc++] = mandoc_strdup("-t");
1186: argv[argc++] = tag_files->tagname;
1187: use_ofn = 0;
1188: }
1.149 schwarze 1189: }
1.144 schwarze 1190: }
1.212 schwarze 1191: if (use_ofn)
1192: argv[argc++] = tag_files->ofn;
1.144 schwarze 1193: argv[argc] = NULL;
1194:
1.130 schwarze 1195: switch (pager_pid = fork()) {
1.95 schwarze 1196: case -1:
1.231 schwarze 1197: mandoc_msg(MANDOCERR_FORK, 0, 0, "%s", strerror(errno));
1198: exit(mandoc_msg_getrc());
1.95 schwarze 1199: case 0:
1.129 schwarze 1200: break;
1201: default:
1.165 schwarze 1202: (void)setpgid(pager_pid, 0);
1.182 schwarze 1203: (void)tcsetpgrp(tag_files->ofd, pager_pid);
1.231 schwarze 1204: if (pledge("stdio rpath tmppath tty proc", NULL) == -1) {
1205: mandoc_msg(MANDOCERR_PLEDGE, 0, 0,
1206: "%s", strerror(errno));
1207: exit(mandoc_msg_getrc());
1208: }
1.166 schwarze 1209: tag_files->pager_pid = pager_pid;
1.150 schwarze 1210: return pager_pid;
1.95 schwarze 1211: }
1212:
1.129 schwarze 1213: /* The child process becomes the pager. */
1.95 schwarze 1214:
1.231 schwarze 1215: if (dup2(tag_files->ofd, STDOUT_FILENO) == -1) {
1216: mandoc_msg(MANDOCERR_DUP, 0, 0, "%s", strerror(errno));
1217: _exit(mandoc_msg_getrc());
1218: }
1.149 schwarze 1219: close(tag_files->ofd);
1.206 tb 1220: assert(tag_files->tfd == -1);
1.172 schwarze 1221:
1222: /* Do not start the pager before controlling the terminal. */
1223:
1.182 schwarze 1224: while (tcgetpgrp(STDOUT_FILENO) != getpid())
1.172 schwarze 1225: nanosleep(&timeout, NULL);
1226:
1.95 schwarze 1227: execvp(argv[0], argv);
1.231 schwarze 1228: mandoc_msg(MANDOCERR_EXEC, 0, 0, "%s: %s", argv[0], strerror(errno));
1229: _exit(mandoc_msg_getrc());
1.30 schwarze 1230: }
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