Annotation of mandoc/main.c, Revision 1.333
1.333 ! schwarze 1: /* $Id: main.c,v 1.332 2019/07/19 20:27:25 schwarze Exp $ */
1.1 kristaps 2: /*
1.183 schwarze 3: * Copyright (c) 2008-2012 Kristaps Dzonsons <kristaps@bsd.lv>
1.317 schwarze 4: * Copyright (c) 2010-2012, 2014-2019 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 */
1.326 schwarze 24: #include <sys/stat.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>
1.321 schwarze 43: #include <termios.h>
1.265 schwarze 44: #include <time.h>
1.1 kristaps 45: #include <unistd.h>
46:
1.231 schwarze 47: #include "mandoc_aux.h"
1.71 kristaps 48: #include "mandoc.h"
1.294 schwarze 49: #include "mandoc_xr.h"
1.231 schwarze 50: #include "roff.h"
1.1 kristaps 51: #include "mdoc.h"
1.10 kristaps 52: #include "man.h"
1.311 schwarze 53: #include "mandoc_parse.h"
1.239 schwarze 54: #include "tag.h"
1.231 schwarze 55: #include "main.h"
1.229 schwarze 56: #include "manconf.h"
1.180 schwarze 57: #include "mansearch.h"
1.16 kristaps 58:
1.181 schwarze 59: enum outmode {
60: OUTMODE_DEF = 0,
61: OUTMODE_FLN,
62: OUTMODE_LST,
63: OUTMODE_ALL,
64: OUTMODE_ONE
65: };
66:
1.19 kristaps 67: enum outt {
1.154 kristaps 68: OUTT_ASCII = 0, /* -Tascii */
1.162 kristaps 69: OUTT_LOCALE, /* -Tlocale */
1.163 kristaps 70: OUTT_UTF8, /* -Tutf8 */
1.154 kristaps 71: OUTT_TREE, /* -Ttree */
1.164 schwarze 72: OUTT_MAN, /* -Tman */
1.154 kristaps 73: OUTT_HTML, /* -Thtml */
1.285 schwarze 74: OUTT_MARKDOWN, /* -Tmarkdown */
1.154 kristaps 75: OUTT_LINT, /* -Tlint */
76: OUTT_PS, /* -Tps */
77: OUTT_PDF /* -Tpdf */
1.19 kristaps 78: };
79:
1.5 kristaps 80: struct curparse {
1.154 kristaps 81: struct mparse *mp;
1.293 schwarze 82: struct manoutput *outopts; /* output options */
83: void *outdata; /* data for output */
84: char *os_s; /* operating system for display */
1.148 kristaps 85: int wstop; /* stop after a file with a warning */
1.293 schwarze 86: enum mandoc_os os_e; /* check base system conventions */
1.173 schwarze 87: enum outt outtype; /* which output to use */
1.79 kristaps 88: };
1.270 schwarze 89:
90:
91: int mandocdb(int, char *[]);
1.79 kristaps 92:
1.312 schwarze 93: static void check_xr(void);
1.213 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 *);
1.295 schwarze 98: static int fs_search(const struct mansearch *,
1.213 schwarze 99: const struct manpaths *, int, char**,
100: struct manpage **, size_t *);
1.276 schwarze 101: static void outdata_alloc(struct curparse *);
1.227 schwarze 102: static void parse(struct curparse *, int, const char *);
1.329 schwarze 103: static void passthrough(int, int);
1.333 ! schwarze 104: static void run_pager(struct tag_files *);
1.244 schwarze 105: static pid_t spawn_pager(struct tag_files *);
1.283 schwarze 106: static void usage(enum argmode) __attribute__((__noreturn__));
1.103 schwarze 107: static int woptions(struct curparse *, char *);
1.1 kristaps 108:
1.182 schwarze 109: static const int sec_prios[] = {1, 4, 5, 8, 6, 3, 7, 2, 9};
1.202 schwarze 110: static char help_arg[] = "help";
111: static char *help_argv[] = {help_arg, NULL};
1.1 kristaps 112:
1.173 schwarze 113:
1.1 kristaps 114: int
115: main(int argc, char *argv[])
116: {
1.229 schwarze 117: struct manconf conf;
1.282 schwarze 118: struct mansearch search;
1.5 kristaps 119: struct curparse curp;
1.304 schwarze 120: struct winsize ws;
1.244 schwarze 121: struct tag_files *tag_files;
1.282 schwarze 122: struct manpage *res, *resp;
123: const char *progname, *sec, *thisarg;
124: char *conf_file, *defpaths, *auxpaths;
1.316 schwarze 125: char *oarg, *tagarg;
1.207 schwarze 126: unsigned char *uc;
1.325 schwarze 127: size_t i, sz, ssz;
1.230 schwarze 128: int prio, best_prio;
1.181 schwarze 129: enum outmode outmode;
1.305 schwarze 130: int fd, startdir;
1.180 schwarze 131: int show_usage;
1.170 schwarze 132: int options;
1.244 schwarze 133: int use_pager;
1.180 schwarze 134: int c;
1.1 kristaps 135:
1.254 schwarze 136: #if HAVE_PROGNAME
137: progname = getprogname();
138: #else
1.219 schwarze 139: if (argc < 1)
1.254 schwarze 140: progname = mandoc_strdup("mandoc");
141: else if ((progname = strrchr(argv[0], '/')) == NULL)
142: progname = argv[0];
1.54 kristaps 143: else
1.254 schwarze 144: ++progname;
145: setprogname(progname);
1.247 schwarze 146: #endif
1.203 schwarze 147:
1.317 schwarze 148: mandoc_msg_setoutfile(stderr);
1.254 schwarze 149: if (strncmp(progname, "mandocdb", 8) == 0 ||
150: strcmp(progname, BINM_MAKEWHATIS) == 0)
1.245 schwarze 151: return mandocdb(argc, argv);
1.179 schwarze 152:
1.255 schwarze 153: #if HAVE_PLEDGE
1.329 schwarze 154: if (pledge("stdio rpath tmppath tty proc exec", NULL) == -1) {
155: mandoc_msg(MANDOCERR_PLEDGE, 0, 0, "%s", strerror(errno));
156: return mandoc_msg_getrc();
157: }
1.269 kristaps 158: #endif
159: #if HAVE_SANDBOX_INIT
160: if (sandbox_init(kSBXProfileNoInternet, SANDBOX_NAMED, NULL) == -1)
161: errx((int)MANDOCLEVEL_SYSERR, "sandbox_init");
1.255 schwarze 162: #endif
163:
1.180 schwarze 164: /* Search options. */
165:
1.229 schwarze 166: memset(&conf, 0, sizeof(conf));
1.205 schwarze 167: conf_file = defpaths = NULL;
168: auxpaths = NULL;
1.180 schwarze 169:
170: memset(&search, 0, sizeof(struct mansearch));
171: search.outkey = "Nd";
1.282 schwarze 172: oarg = NULL;
1.180 schwarze 173:
1.254 schwarze 174: if (strcmp(progname, BINM_MAN) == 0)
1.180 schwarze 175: search.argmode = ARG_NAME;
1.254 schwarze 176: else if (strcmp(progname, BINM_APROPOS) == 0)
1.180 schwarze 177: search.argmode = ARG_EXPR;
1.254 schwarze 178: else if (strcmp(progname, BINM_WHATIS) == 0)
1.180 schwarze 179: search.argmode = ARG_WORD;
1.254 schwarze 180: else if (strncmp(progname, "help", 4) == 0)
1.202 schwarze 181: search.argmode = ARG_NAME;
1.180 schwarze 182: else
183: search.argmode = ARG_FILE;
184:
185: /* Parser and formatter options. */
1.54 kristaps 186:
1.51 kristaps 187: memset(&curp, 0, sizeof(struct curparse));
1.201 schwarze 188: curp.outtype = OUTT_LOCALE;
1.230 schwarze 189: curp.outopts = &conf.output;
1.194 schwarze 190: options = MPARSE_SO | MPARSE_UTF8 | MPARSE_LATIN1;
1.19 kristaps 191:
1.244 schwarze 192: use_pager = 1;
193: tag_files = NULL;
1.180 schwarze 194: show_usage = 0;
1.181 schwarze 195: outmode = OUTMODE_DEF;
1.183 schwarze 196:
1.289 schwarze 197: while ((c = getopt(argc, argv,
198: "aC:cfhI:iK:klM:m:O:S:s:T:VW:w")) != -1) {
199: if (c == 'i' && search.argmode == ARG_EXPR) {
200: optind--;
201: break;
202: }
1.1 kristaps 203: switch (c) {
1.181 schwarze 204: case 'a':
205: outmode = OUTMODE_ALL;
206: break;
1.180 schwarze 207: case 'C':
208: conf_file = optarg;
209: break;
1.183 schwarze 210: case 'c':
1.244 schwarze 211: use_pager = 0;
1.183 schwarze 212: break;
1.180 schwarze 213: case 'f':
214: search.argmode = ARG_WORD;
215: break;
1.190 schwarze 216: case 'h':
1.230 schwarze 217: conf.output.synopsisonly = 1;
1.244 schwarze 218: use_pager = 0;
1.190 schwarze 219: outmode = OUTMODE_ALL;
220: break;
1.173 schwarze 221: case 'I':
1.329 schwarze 222: if (strncmp(optarg, "os=", 3) != 0) {
223: mandoc_msg(MANDOCERR_BADARG_BAD, 0, 0,
224: "-I %s", optarg);
225: return mandoc_msg_getrc();
1.166 schwarze 226: }
1.293 schwarze 227: if (curp.os_s != NULL) {
1.329 schwarze 228: mandoc_msg(MANDOCERR_BADARG_DUPE, 0, 0,
229: "-I %s", optarg);
230: return mandoc_msg_getrc();
1.166 schwarze 231: }
1.293 schwarze 232: curp.os_s = mandoc_strdup(optarg + 3);
1.181 schwarze 233: break;
1.194 schwarze 234: case 'K':
1.329 schwarze 235: options &= ~(MPARSE_UTF8 | MPARSE_LATIN1);
236: if (strcmp(optarg, "utf-8") == 0)
237: options |= MPARSE_UTF8;
238: else if (strcmp(optarg, "iso-8859-1") == 0)
239: options |= MPARSE_LATIN1;
240: else if (strcmp(optarg, "us-ascii") != 0) {
241: mandoc_msg(MANDOCERR_BADARG_BAD, 0, 0,
242: "-K %s", optarg);
243: return mandoc_msg_getrc();
244: }
1.194 schwarze 245: break;
1.180 schwarze 246: case 'k':
247: search.argmode = ARG_EXPR;
248: break;
1.188 schwarze 249: case 'l':
250: search.argmode = ARG_FILE;
251: outmode = OUTMODE_ALL;
252: break;
1.180 schwarze 253: case 'M':
254: defpaths = optarg;
255: break;
1.173 schwarze 256: case 'm':
1.180 schwarze 257: auxpaths = optarg;
1.10 kristaps 258: break;
1.173 schwarze 259: case 'O':
1.282 schwarze 260: oarg = optarg;
1.44 kristaps 261: break;
1.180 schwarze 262: case 'S':
263: search.arch = optarg;
264: break;
265: case 's':
266: search.sec = optarg;
267: break;
1.173 schwarze 268: case 'T':
1.329 schwarze 269: if (strcmp(optarg, "ascii") == 0)
270: curp.outtype = OUTT_ASCII;
271: else if (strcmp(optarg, "lint") == 0) {
272: curp.outtype = OUTT_LINT;
273: mandoc_msg_setoutfile(stdout);
274: mandoc_msg_setmin(MANDOCERR_BASE);
275: } else if (strcmp(optarg, "tree") == 0)
276: curp.outtype = OUTT_TREE;
277: else if (strcmp(optarg, "man") == 0)
278: curp.outtype = OUTT_MAN;
279: else if (strcmp(optarg, "html") == 0)
280: curp.outtype = OUTT_HTML;
281: else if (strcmp(optarg, "markdown") == 0)
282: curp.outtype = OUTT_MARKDOWN;
283: else if (strcmp(optarg, "utf8") == 0)
284: curp.outtype = OUTT_UTF8;
285: else if (strcmp(optarg, "locale") == 0)
286: curp.outtype = OUTT_LOCALE;
287: else if (strcmp(optarg, "ps") == 0)
288: curp.outtype = OUTT_PS;
289: else if (strcmp(optarg, "pdf") == 0)
290: curp.outtype = OUTT_PDF;
291: else {
292: mandoc_msg(MANDOCERR_BADARG_BAD, 0, 0,
293: "-T %s", optarg);
294: return mandoc_msg_getrc();
295: }
1.1 kristaps 296: break;
1.173 schwarze 297: case 'W':
1.329 schwarze 298: if (woptions(&curp, optarg) == -1)
299: return mandoc_msg_getrc();
1.1 kristaps 300: break;
1.181 schwarze 301: case 'w':
302: outmode = OUTMODE_FLN;
303: break;
1.1 kristaps 304: default:
1.180 schwarze 305: show_usage = 1;
306: break;
1.1 kristaps 307: }
1.180 schwarze 308: }
309:
310: if (show_usage)
311: usage(search.argmode);
312:
1.185 schwarze 313: /* Postprocess options. */
314:
1.181 schwarze 315: if (outmode == OUTMODE_DEF) {
316: switch (search.argmode) {
317: case ARG_FILE:
318: outmode = OUTMODE_ALL;
1.244 schwarze 319: use_pager = 0;
1.181 schwarze 320: break;
321: case ARG_NAME:
322: outmode = OUTMODE_ONE;
323: break;
324: default:
325: outmode = OUTMODE_LST;
326: break;
1.282 schwarze 327: }
328: }
329:
330: if (oarg != NULL) {
331: if (outmode == OUTMODE_LST)
332: search.outkey = oarg;
333: else {
334: while (oarg != NULL) {
335: if (manconf_output(&conf.output,
1.327 schwarze 336: strsep(&oarg, ","), 0) == -1)
1.329 schwarze 337: return mandoc_msg_getrc();
1.282 schwarze 338: }
1.181 schwarze 339: }
340: }
341:
1.315 schwarze 342: if (curp.outtype != OUTT_TREE || !curp.outopts->noval)
343: options |= MPARSE_VALIDATE;
344:
1.246 schwarze 345: if (outmode == OUTMODE_FLN ||
346: outmode == OUTMODE_LST ||
347: !isatty(STDOUT_FILENO))
348: use_pager = 0;
1.304 schwarze 349:
350: if (use_pager &&
351: (conf.output.width == 0 || conf.output.indent == 0) &&
1.306 schwarze 352: ioctl(STDOUT_FILENO, TIOCGWINSZ, &ws) != -1 &&
353: ws.ws_col > 1) {
1.304 schwarze 354: if (conf.output.width == 0 && ws.ws_col < 79)
355: conf.output.width = ws.ws_col - 1;
356: if (conf.output.indent == 0 && ws.ws_col < 66)
357: conf.output.indent = 3;
358: }
1.246 schwarze 359:
1.255 schwarze 360: #if HAVE_PLEDGE
1.329 schwarze 361: if (use_pager == 0) {
362: if (pledge("stdio rpath", NULL) == -1) {
363: mandoc_msg(MANDOCERR_PLEDGE, 0, 0,
364: "%s", strerror(errno));
365: return mandoc_msg_getrc();
366: }
367: }
1.255 schwarze 368: #endif
369:
1.185 schwarze 370: /* Parse arguments. */
371:
1.219 schwarze 372: if (argc > 0) {
373: argc -= optind;
374: argv += optind;
375: }
1.186 schwarze 376: resp = NULL;
1.185 schwarze 377:
1.202 schwarze 378: /*
379: * Quirks for help(1)
380: * and for a man(1) section argument without -s.
381: */
382:
383: if (search.argmode == ARG_NAME) {
1.254 schwarze 384: if (*progname == 'h') {
1.202 schwarze 385: if (argc == 0) {
386: argv = help_argv;
387: argc = 1;
388: }
1.211 schwarze 389: } else if (argc > 1 &&
1.223 kristaps 390: ((uc = (unsigned char *)argv[0]) != NULL) &&
1.207 schwarze 391: ((isdigit(uc[0]) && (uc[1] == '\0' ||
1.324 schwarze 392: isalpha(uc[1]))) ||
1.207 schwarze 393: (uc[0] == 'n' && uc[1] == '\0'))) {
1.223 kristaps 394: search.sec = (char *)uc;
1.202 schwarze 395: argv++;
396: argc--;
397: }
1.216 schwarze 398: if (search.arch == NULL)
399: search.arch = getenv("MACHINE");
1.223 kristaps 400: #ifdef MACHINE
1.216 schwarze 401: if (search.arch == NULL)
402: search.arch = MACHINE;
1.223 kristaps 403: #endif
1.185 schwarze 404: }
1.182 schwarze 405:
1.316 schwarze 406: /*
407: * Use the first argument for -O tag in addition to
408: * using it as a search term for man(1) or apropos(1).
409: */
410:
411: if (conf.output.tag != NULL && *conf.output.tag == '\0') {
412: tagarg = argc > 0 && search.argmode == ARG_EXPR ?
413: strchr(*argv, '=') : NULL;
414: conf.output.tag = tagarg == NULL ? *argv : tagarg + 1;
415: }
416:
1.180 schwarze 417: /* man(1), whatis(1), apropos(1) */
418:
419: if (search.argmode != ARG_FILE) {
1.199 schwarze 420: if (search.argmode == ARG_NAME &&
421: outmode == OUTMODE_ONE)
422: search.firstmatch = 1;
1.182 schwarze 423:
424: /* Access the mandoc database. */
425:
1.229 schwarze 426: manconf_parse(&conf, conf_file, defpaths, auxpaths);
427: if ( ! mansearch(&search, &conf.manpath,
428: argc, argv, &res, &sz))
1.180 schwarze 429: usage(search.argmode);
1.213 schwarze 430:
1.305 schwarze 431: if (sz == 0 && search.argmode == ARG_NAME)
1.329 schwarze 432: (void)fs_search(&search, &conf.manpath,
1.305 schwarze 433: argc, argv, &res, &sz);
434:
435: if (search.argmode == ARG_NAME) {
436: for (c = 0; c < argc; c++) {
437: if (strchr(argv[c], '/') == NULL)
438: continue;
439: if (access(argv[c], R_OK) == -1) {
1.329 schwarze 440: mandoc_msg_setinfilename(argv[c]);
441: mandoc_msg(MANDOCERR_BADARG_BAD,
442: 0, 0, "%s", strerror(errno));
443: mandoc_msg_setinfilename(NULL);
1.305 schwarze 444: continue;
445: }
446: res = mandoc_reallocarray(res,
447: sz + 1, sizeof(*res));
448: res[sz].file = mandoc_strdup(argv[c]);
449: res[sz].names = NULL;
450: res[sz].output = NULL;
1.323 schwarze 451: res[sz].bits = 0;
1.305 schwarze 452: res[sz].ipath = SIZE_MAX;
453: res[sz].sec = 10;
454: res[sz].form = FORM_SRC;
455: sz++;
456: }
1.237 schwarze 457: }
1.187 schwarze 458:
459: if (sz == 0) {
1.305 schwarze 460: if (search.argmode != ARG_NAME)
461: warnx("nothing appropriate");
1.312 schwarze 462: mandoc_msg_setrc(MANDOCLEVEL_BADARG);
1.187 schwarze 463: goto out;
464: }
1.182 schwarze 465:
466: /*
467: * For standard man(1) and -a output mode,
468: * prepare for copying filename pointers
469: * into the program parameter array.
470: */
471:
472: if (outmode == OUTMODE_ONE) {
473: argc = 1;
1.325 schwarze 474: best_prio = 40;
1.186 schwarze 475: } else if (outmode == OUTMODE_ALL)
1.182 schwarze 476: argc = (int)sz;
477:
478: /* Iterate all matching manuals. */
479:
1.213 schwarze 480: resp = res;
1.181 schwarze 481: for (i = 0; i < sz; i++) {
482: if (outmode == OUTMODE_FLN)
483: puts(res[i].file);
1.182 schwarze 484: else if (outmode == OUTMODE_LST)
1.181 schwarze 485: printf("%s - %s\n", res[i].names,
486: res[i].output == NULL ? "" :
487: res[i].output);
1.186 schwarze 488: else if (outmode == OUTMODE_ONE) {
1.182 schwarze 489: /* Search for the best section. */
1.264 schwarze 490: sec = res[i].file;
491: sec += strcspn(sec, "123456789");
492: if (sec[0] == '\0')
1.325 schwarze 493: continue; /* No section at all. */
1.264 schwarze 494: prio = sec_prios[sec[0] - '1'];
1.325 schwarze 495: if (search.sec != NULL) {
496: ssz = strlen(search.sec);
497: if (strncmp(sec, search.sec, ssz) == 0)
498: sec += ssz;
499: } else
500: sec++; /* Prefer without suffix. */
501: if (*sec != '/')
502: prio += 10; /* Wrong dir name. */
503: if (search.sec != NULL &&
504: (strlen(sec) <= ssz + 3 ||
505: strcmp(sec + strlen(sec) - ssz,
506: search.sec) != 0))
507: prio += 20; /* Wrong file ext. */
1.182 schwarze 508: if (prio >= best_prio)
509: continue;
510: best_prio = prio;
1.186 schwarze 511: resp = res + i;
1.182 schwarze 512: }
1.181 schwarze 513: }
1.182 schwarze 514:
515: /*
516: * For man(1), -a and -i output mode, fall through
517: * to the main mandoc(1) code iterating files
518: * and running the parsers on each of them.
519: */
520:
521: if (outmode == OUTMODE_FLN || outmode == OUTMODE_LST)
522: goto out;
1.180 schwarze 523: }
524:
525: /* mandoc(1) */
526:
1.255 schwarze 527: #if HAVE_PLEDGE
1.260 schwarze 528: if (use_pager) {
1.329 schwarze 529: if (pledge("stdio rpath tmppath tty proc exec", NULL) == -1) {
530: mandoc_msg(MANDOCERR_PLEDGE, 0, 0,
531: "%s", strerror(errno));
532: return mandoc_msg_getrc();
533: }
1.260 schwarze 534: } else {
1.329 schwarze 535: if (pledge("stdio rpath", NULL) == -1) {
536: mandoc_msg(MANDOCERR_PLEDGE, 0, 0,
537: "%s", strerror(errno));
538: return mandoc_msg_getrc();
539: }
1.260 schwarze 540: }
1.255 schwarze 541: #endif
542:
1.329 schwarze 543: if (search.argmode == ARG_FILE && auxpaths != NULL) {
544: if (strcmp(auxpaths, "doc") == 0)
545: options |= MPARSE_MDOC;
546: else if (strcmp(auxpaths, "an") == 0)
547: options |= MPARSE_MAN;
548: }
1.241 schwarze 549:
1.249 schwarze 550: mchars_alloc();
1.312 schwarze 551: curp.mp = mparse_alloc(options, curp.os_e, curp.os_s);
1.154 kristaps 552:
1.219 schwarze 553: if (argc < 1) {
1.316 schwarze 554: if (use_pager) {
1.244 schwarze 555: tag_files = tag_init();
1.328 schwarze 556: if (tag_files != NULL)
557: tag_files->tagname = conf.output.tag;
1.316 schwarze 558: }
1.312 schwarze 559: thisarg = "<stdin>";
560: mandoc_msg_setinfilename(thisarg);
561: parse(&curp, STDIN_FILENO, thisarg);
562: mandoc_msg_setinfilename(NULL);
1.212 schwarze 563: }
1.64 kristaps 564:
1.305 schwarze 565: /*
566: * Remember the original working directory, if possible.
567: * This will be needed if some names on the command line
568: * are page names and some are relative file names.
569: * Do not error out if the current directory is not
570: * readable: Maybe it won't be needed after all.
571: */
572: startdir = open(".", O_RDONLY | O_DIRECTORY);
573:
1.219 schwarze 574: while (argc > 0) {
1.305 schwarze 575:
576: /*
577: * Changing directories is not needed in ARG_FILE mode.
578: * Do it on a best-effort basis. Even in case of
579: * failure, some functionality may still work.
580: */
581: if (resp != NULL) {
582: if (resp->ipath != SIZE_MAX)
583: (void)chdir(conf.manpath.paths[resp->ipath]);
584: else if (startdir != -1)
585: (void)fchdir(startdir);
1.312 schwarze 586: thisarg = resp->file;
587: } else
588: thisarg = *argv;
1.305 schwarze 589:
1.329 schwarze 590: mandoc_msg_setinfilename(thisarg);
1.312 schwarze 591: fd = mparse_open(curp.mp, thisarg);
1.212 schwarze 592: if (fd != -1) {
1.244 schwarze 593: if (use_pager) {
1.309 schwarze 594: use_pager = 0;
1.244 schwarze 595: tag_files = tag_init();
1.328 schwarze 596: if (tag_files != NULL)
597: tag_files->tagname = conf.output.tag;
1.244 schwarze 598: }
1.212 schwarze 599:
1.312 schwarze 600: if (resp == NULL || resp->form == FORM_SRC)
601: parse(&curp, fd, thisarg);
1.305 schwarze 602: else
1.329 schwarze 603: passthrough(fd, conf.output.synopsisonly);
1.302 schwarze 604:
605: if (ferror(stdout)) {
606: if (tag_files != NULL) {
1.329 schwarze 607: mandoc_msg(MANDOCERR_WRITE, 0, 0,
608: "%s: %s", tag_files->ofn,
609: strerror(errno));
1.302 schwarze 610: tag_unlink();
611: tag_files = NULL;
612: } else
1.329 schwarze 613: mandoc_msg(MANDOCERR_WRITE, 0, 0,
614: "%s", strerror(errno));
1.302 schwarze 615: break;
616: }
1.212 schwarze 617:
1.276 schwarze 618: if (argc > 1 && curp.outtype <= OUTT_UTF8) {
619: if (curp.outdata == NULL)
620: outdata_alloc(&curp);
1.267 schwarze 621: terminal_sepline(curp.outdata);
1.276 schwarze 622: }
1.314 schwarze 623: } else
1.329 schwarze 624: mandoc_msg(resp == NULL ? MANDOCERR_BADARG_BAD :
625: MANDOCERR_OPEN, 0, 0, "%s", strerror(errno));
626:
627: mandoc_msg_setinfilename(NULL);
1.192 schwarze 628:
1.312 schwarze 629: if (curp.wstop && mandoc_msg_getrc() != MANDOCLEVEL_OK)
1.64 kristaps 630: break;
1.210 schwarze 631:
1.212 schwarze 632: if (resp != NULL)
633: resp++;
634: else
635: argv++;
636: if (--argc)
637: mparse_reset(curp.mp);
1.1 kristaps 638: }
1.305 schwarze 639: if (startdir != -1) {
640: (void)fchdir(startdir);
641: close(startdir);
642: }
1.1 kristaps 643:
1.252 schwarze 644: if (curp.outdata != NULL) {
645: switch (curp.outtype) {
646: case OUTT_HTML:
647: html_free(curp.outdata);
648: break;
649: case OUTT_UTF8:
650: case OUTT_LOCALE:
651: case OUTT_ASCII:
652: ascii_free(curp.outdata);
653: break;
654: case OUTT_PDF:
655: case OUTT_PS:
656: pspdf_free(curp.outdata);
657: break;
658: default:
659: break;
660: }
1.250 schwarze 661: }
1.294 schwarze 662: mandoc_xr_free();
1.195 schwarze 663: mparse_free(curp.mp);
1.249 schwarze 664: mchars_free();
1.182 schwarze 665:
666: out:
667: if (search.argmode != ARG_FILE) {
1.229 schwarze 668: manconf_free(&conf);
1.182 schwarze 669: mansearch_free(res, sz);
670: }
1.293 schwarze 671: free(curp.os_s);
1.1 kristaps 672:
1.244 schwarze 673: if (tag_files != NULL) {
1.225 schwarze 674: fclose(stdout);
1.239 schwarze 675: tag_write();
1.333 ! schwarze 676: run_pager(tag_files);
1.239 schwarze 677: tag_unlink();
1.331 schwarze 678: } else if (curp.outtype != OUTT_LINT &&
679: (search.argmode == ARG_FILE || sz > 0))
1.330 schwarze 680: mandoc_msg_summary();
681:
1.312 schwarze 682: return (int)mandoc_msg_getrc();
1.1 kristaps 683: }
684:
1.55 kristaps 685: static void
1.180 schwarze 686: usage(enum argmode argmode)
1.1 kristaps 687: {
1.180 schwarze 688: switch (argmode) {
689: case ARG_FILE:
1.287 schwarze 690: fputs("usage: mandoc [-ac] [-I os=name] "
691: "[-K encoding] [-mdoc | -man] [-O options]\n"
1.228 schwarze 692: "\t [-T output] [-W level] [file ...]\n", stderr);
1.180 schwarze 693: break;
694: case ARG_NAME:
1.287 schwarze 695: fputs("usage: man [-acfhklw] [-C file] [-M path] "
696: "[-m path] [-S subsection]\n"
697: "\t [[-s] section] name ...\n", stderr);
1.180 schwarze 698: break;
699: case ARG_WORD:
1.287 schwarze 700: fputs("usage: whatis [-afk] [-C file] "
1.188 schwarze 701: "[-M path] [-m path] [-O outkey] [-S arch]\n"
702: "\t [-s section] name ...\n", stderr);
1.180 schwarze 703: break;
704: case ARG_EXPR:
1.287 schwarze 705: fputs("usage: apropos [-afk] [-C file] "
1.188 schwarze 706: "[-M path] [-m path] [-O outkey] [-S arch]\n"
1.180 schwarze 707: "\t [-s section] expression ...\n", stderr);
708: break;
709: }
1.105 kristaps 710: exit((int)MANDOCLEVEL_BADARG);
1.68 joerg 711: }
1.213 schwarze 712:
713: static int
714: fs_lookup(const struct manpaths *paths, size_t ipath,
715: const char *sec, const char *arch, const char *name,
716: struct manpage **res, size_t *ressz)
717: {
1.326 schwarze 718: struct stat sb;
1.222 schwarze 719: glob_t globinfo;
1.213 schwarze 720: struct manpage *page;
721: char *file;
1.274 schwarze 722: int globres;
723: enum form form;
1.213 schwarze 724:
1.222 schwarze 725: form = FORM_SRC;
1.213 schwarze 726: mandoc_asprintf(&file, "%s/man%s/%s.%s",
727: paths->paths[ipath], sec, name, sec);
1.326 schwarze 728: if (stat(file, &sb) != -1)
1.213 schwarze 729: goto found;
730: free(file);
731:
732: mandoc_asprintf(&file, "%s/cat%s/%s.0",
733: paths->paths[ipath], sec, name);
1.326 schwarze 734: if (stat(file, &sb) != -1) {
1.213 schwarze 735: form = FORM_CAT;
736: goto found;
737: }
738: free(file);
739:
740: if (arch != NULL) {
741: mandoc_asprintf(&file, "%s/man%s/%s/%s.%s",
742: paths->paths[ipath], sec, arch, name, sec);
1.326 schwarze 743: if (stat(file, &sb) != -1)
1.213 schwarze 744: goto found;
745: free(file);
746: }
1.222 schwarze 747:
1.240 schwarze 748: mandoc_asprintf(&file, "%s/man%s/%s.[01-9]*",
1.222 schwarze 749: paths->paths[ipath], sec, name);
750: globres = glob(file, 0, NULL, &globinfo);
751: if (globres != 0 && globres != GLOB_NOMATCH)
1.329 schwarze 752: mandoc_msg(MANDOCERR_GLOB, 0, 0,
753: "%s: %s", file, strerror(errno));
1.222 schwarze 754: free(file);
755: if (globres == 0)
756: file = mandoc_strdup(*globinfo.gl_pathv);
757: globfree(&globinfo);
1.326 schwarze 758: if (globres == 0) {
759: if (stat(file, &sb) != -1)
760: goto found;
761: free(file);
762: }
1.296 schwarze 763: if (res != NULL || ipath + 1 != paths->sz)
1.329 schwarze 764: return -1;
1.213 schwarze 765:
1.296 schwarze 766: mandoc_asprintf(&file, "%s.%s", name, sec);
1.326 schwarze 767: globres = stat(file, &sb);
1.296 schwarze 768: free(file);
1.329 schwarze 769: return globres;
1.296 schwarze 770:
1.213 schwarze 771: found:
1.266 schwarze 772: warnx("outdated mandoc.db lacks %s(%s) entry, run %s %s",
773: name, sec, BINM_MAKEWHATIS, paths->paths[ipath]);
1.296 schwarze 774: if (res == NULL) {
775: free(file);
1.329 schwarze 776: return 0;
1.296 schwarze 777: }
1.329 schwarze 778: *res = mandoc_reallocarray(*res, ++*ressz, sizeof(**res));
1.213 schwarze 779: page = *res + (*ressz - 1);
780: page->file = file;
781: page->names = NULL;
782: page->output = NULL;
1.323 schwarze 783: page->bits = NAME_FILE & NAME_MASK;
1.213 schwarze 784: page->ipath = ipath;
785: page->sec = (*sec >= '1' && *sec <= '9') ? *sec - '1' + 1 : 10;
786: page->form = form;
1.329 schwarze 787: return 0;
1.213 schwarze 788: }
789:
1.295 schwarze 790: static int
1.213 schwarze 791: fs_search(const struct mansearch *cfg, const struct manpaths *paths,
792: int argc, char **argv, struct manpage **res, size_t *ressz)
793: {
794: const char *const sections[] =
1.264 schwarze 795: {"1", "8", "6", "2", "3", "5", "7", "4", "9", "3p"};
1.213 schwarze 796: const size_t nsec = sizeof(sections)/sizeof(sections[0]);
797:
798: size_t ipath, isec, lastsz;
799:
800: assert(cfg->argmode == ARG_NAME);
801:
1.295 schwarze 802: if (res != NULL)
803: *res = NULL;
1.213 schwarze 804: *ressz = lastsz = 0;
805: while (argc) {
806: for (ipath = 0; ipath < paths->sz; ipath++) {
807: if (cfg->sec != NULL) {
808: if (fs_lookup(paths, ipath, cfg->sec,
1.329 schwarze 809: cfg->arch, *argv, res, ressz) != -1 &&
1.213 schwarze 810: cfg->firstmatch)
1.329 schwarze 811: return 0;
1.213 schwarze 812: } else for (isec = 0; isec < nsec; isec++)
813: if (fs_lookup(paths, ipath, sections[isec],
1.329 schwarze 814: cfg->arch, *argv, res, ressz) != -1 &&
1.213 schwarze 815: cfg->firstmatch)
1.329 schwarze 816: return 0;
1.213 schwarze 817: }
1.305 schwarze 818: if (res != NULL && *ressz == lastsz &&
1.307 schwarze 819: strchr(*argv, '/') == NULL) {
1.320 schwarze 820: if (cfg->arch != NULL &&
821: arch_valid(cfg->arch, OSENUM) == 0)
822: warnx("Unknown architecture \"%s\".",
823: cfg->arch);
824: else if (cfg->sec == NULL)
1.307 schwarze 825: warnx("No entry for %s in the manual.",
826: *argv);
827: else
828: warnx("No entry for %s in section %s "
829: "of the manual.", *argv, cfg->sec);
830: }
1.213 schwarze 831: lastsz = *ressz;
832: argv++;
833: argc--;
834: }
1.329 schwarze 835: return -1;
1.213 schwarze 836: }
1.68 joerg 837:
1.64 kristaps 838: static void
1.227 schwarze 839: parse(struct curparse *curp, int fd, const char *file)
1.1 kristaps 840: {
1.315 schwarze 841: struct roff_meta *meta;
1.112 kristaps 842:
1.154 kristaps 843: /* Begin by parsing the file itself. */
1.112 kristaps 844:
1.154 kristaps 845: assert(file);
1.263 schwarze 846: assert(fd >= 0);
1.112 kristaps 847:
1.312 schwarze 848: mparse_readfd(curp->mp, fd, file);
1.261 schwarze 849: if (fd != STDIN_FILENO)
850: close(fd);
1.112 kristaps 851:
1.1 kristaps 852: /*
1.154 kristaps 853: * With -Wstop and warnings or errors of at least the requested
854: * level, do not produce output.
1.1 kristaps 855: */
856:
1.312 schwarze 857: if (curp->wstop && mandoc_msg_getrc() != MANDOCLEVEL_OK)
1.227 schwarze 858: return;
1.111 kristaps 859:
1.276 schwarze 860: if (curp->outdata == NULL)
861: outdata_alloc(curp);
1.319 schwarze 862: else if (curp->outtype == OUTT_HTML)
863: html_reset(curp);
1.111 kristaps 864:
1.315 schwarze 865: mandoc_xr_reset();
866: meta = mparse_result(curp->mp);
1.250 schwarze 867:
868: /* Execute the out device, if it exists. */
869:
1.315 schwarze 870: if (meta->macroset == MACROSET_MDOC) {
1.111 kristaps 871: switch (curp->outtype) {
1.173 schwarze 872: case OUTT_HTML:
1.315 schwarze 873: html_mdoc(curp->outdata, meta);
1.111 kristaps 874: break;
1.173 schwarze 875: case OUTT_TREE:
1.315 schwarze 876: tree_mdoc(curp->outdata, meta);
1.111 kristaps 877: break;
1.173 schwarze 878: case OUTT_MAN:
1.315 schwarze 879: man_mdoc(curp->outdata, meta);
1.164 schwarze 880: break;
1.173 schwarze 881: case OUTT_PDF:
882: case OUTT_ASCII:
883: case OUTT_UTF8:
884: case OUTT_LOCALE:
885: case OUTT_PS:
1.315 schwarze 886: terminal_mdoc(curp->outdata, meta);
1.250 schwarze 887: break;
1.285 schwarze 888: case OUTT_MARKDOWN:
1.315 schwarze 889: markdown_mdoc(curp->outdata, meta);
1.285 schwarze 890: break;
1.250 schwarze 891: default:
892: break;
893: }
894: }
1.315 schwarze 895: if (meta->macroset == MACROSET_MAN) {
1.250 schwarze 896: switch (curp->outtype) {
897: case OUTT_HTML:
1.315 schwarze 898: html_man(curp->outdata, meta);
1.250 schwarze 899: break;
900: case OUTT_TREE:
1.315 schwarze 901: tree_man(curp->outdata, meta);
1.250 schwarze 902: break;
903: case OUTT_MAN:
1.308 schwarze 904: mparse_copy(curp->mp);
1.250 schwarze 905: break;
906: case OUTT_PDF:
907: case OUTT_ASCII:
908: case OUTT_UTF8:
909: case OUTT_LOCALE:
910: case OUTT_PS:
1.315 schwarze 911: terminal_man(curp->outdata, meta);
1.111 kristaps 912: break;
913: default:
914: break;
915: }
1.276 schwarze 916: }
1.312 schwarze 917: if (mandoc_msg_getmin() < MANDOCERR_STYLE)
918: check_xr();
1.294 schwarze 919: }
920:
921: static void
1.312 schwarze 922: check_xr(void)
1.294 schwarze 923: {
924: static struct manpaths paths;
925: struct mansearch search;
926: struct mandoc_xr *xr;
927: size_t sz;
928:
929: if (paths.sz == 0)
930: manpath_base(&paths);
931:
932: for (xr = mandoc_xr_get(); xr != NULL; xr = xr->next) {
1.297 schwarze 933: if (xr->line == -1)
934: continue;
1.294 schwarze 935: search.arch = NULL;
936: search.sec = xr->sec;
937: search.outkey = NULL;
938: search.argmode = ARG_NAME;
939: search.firstmatch = 1;
940: if (mansearch(&search, &paths, 1, &xr->name, NULL, &sz))
1.295 schwarze 941: continue;
1.329 schwarze 942: if (fs_search(&search, &paths, 1, &xr->name, NULL, &sz) != -1)
1.294 schwarze 943: continue;
1.298 schwarze 944: if (xr->count == 1)
1.313 schwarze 945: mandoc_msg(MANDOCERR_XR_BAD, xr->line,
946: xr->pos + 1, "Xr %s %s", xr->name, xr->sec);
1.298 schwarze 947: else
1.313 schwarze 948: mandoc_msg(MANDOCERR_XR_BAD, xr->line,
949: xr->pos + 1, "Xr %s %s (%d times)",
1.298 schwarze 950: xr->name, xr->sec, xr->count);
1.294 schwarze 951: }
1.276 schwarze 952: }
953:
954: static void
955: outdata_alloc(struct curparse *curp)
956: {
957: switch (curp->outtype) {
958: case OUTT_HTML:
959: curp->outdata = html_alloc(curp->outopts);
960: break;
961: case OUTT_UTF8:
962: curp->outdata = utf8_alloc(curp->outopts);
963: break;
964: case OUTT_LOCALE:
965: curp->outdata = locale_alloc(curp->outopts);
966: break;
967: case OUTT_ASCII:
968: curp->outdata = ascii_alloc(curp->outopts);
969: break;
970: case OUTT_PDF:
971: curp->outdata = pdf_alloc(curp->outopts);
972: break;
973: case OUTT_PS:
974: curp->outdata = ps_alloc(curp->outopts);
975: break;
976: default:
977: break;
1.111 kristaps 978: }
1.186 schwarze 979: }
980:
1.227 schwarze 981: static void
1.329 schwarze 982: passthrough(int fd, int synopsis_only)
1.186 schwarze 983: {
1.197 schwarze 984: const char synb[] = "S\bSY\bYN\bNO\bOP\bPS\bSI\bIS\bS";
985: const char synr[] = "SYNOPSIS";
986:
987: FILE *stream;
1.257 schwarze 988: char *line, *cp;
989: size_t linesz;
1.277 schwarze 990: ssize_t len, written;
1.329 schwarze 991: int lno, print;
1.210 schwarze 992:
1.329 schwarze 993: stream = NULL;
1.257 schwarze 994: line = NULL;
995: linesz = 0;
1.197 schwarze 996:
1.277 schwarze 997: if (fflush(stdout) == EOF) {
1.329 schwarze 998: mandoc_msg(MANDOCERR_FFLUSH, 0, 0, "%s", strerror(errno));
999: goto done;
1.277 schwarze 1000: }
1.197 schwarze 1001: if ((stream = fdopen(fd, "r")) == NULL) {
1002: close(fd);
1.329 schwarze 1003: mandoc_msg(MANDOCERR_FDOPEN, 0, 0, "%s", strerror(errno));
1004: goto done;
1.197 schwarze 1005: }
1.186 schwarze 1006:
1.329 schwarze 1007: lno = print = 0;
1.277 schwarze 1008: while ((len = getline(&line, &linesz, stream)) != -1) {
1.329 schwarze 1009: lno++;
1.257 schwarze 1010: cp = line;
1.197 schwarze 1011: if (synopsis_only) {
1012: if (print) {
1.257 schwarze 1013: if ( ! isspace((unsigned char)*cp))
1.197 schwarze 1014: goto done;
1.277 schwarze 1015: while (isspace((unsigned char)*cp)) {
1.257 schwarze 1016: cp++;
1.277 schwarze 1017: len--;
1018: }
1.197 schwarze 1019: } else {
1.257 schwarze 1020: if (strcmp(cp, synb) == 0 ||
1021: strcmp(cp, synr) == 0)
1.197 schwarze 1022: print = 1;
1023: continue;
1024: }
1025: }
1.277 schwarze 1026: for (; len > 0; len -= written) {
1.329 schwarze 1027: if ((written = write(STDOUT_FILENO, cp, len)) == -1) {
1028: mandoc_msg(MANDOCERR_WRITE, 0, 0,
1029: "%s", strerror(errno));
1030: goto done;
1031: }
1.257 schwarze 1032: }
1.197 schwarze 1033: }
1.329 schwarze 1034: if (ferror(stream))
1035: mandoc_msg(MANDOCERR_GETLINE, lno, 0, "%s", strerror(errno));
1.193 schwarze 1036:
1.197 schwarze 1037: done:
1.257 schwarze 1038: free(line);
1.329 schwarze 1039: if (stream != NULL)
1040: fclose(stream);
1.1 kristaps 1041: }
1042:
1043: static int
1.103 schwarze 1044: woptions(struct curparse *curp, char *arg)
1.1 kristaps 1045: {
1.34 kristaps 1046: char *v, *o;
1.293 schwarze 1047: const char *toks[11];
1.1 kristaps 1048:
1.103 schwarze 1049: toks[0] = "stop";
1050: toks[1] = "all";
1.293 schwarze 1051: toks[2] = "base";
1052: toks[3] = "style";
1053: toks[4] = "warning";
1054: toks[5] = "error";
1055: toks[6] = "unsupp";
1056: toks[7] = "fatal";
1057: toks[8] = "openbsd";
1058: toks[9] = "netbsd";
1059: toks[10] = NULL;
1.1 kristaps 1060:
1.34 kristaps 1061: while (*arg) {
1062: o = arg;
1.272 schwarze 1063: switch (getsubopt(&arg, (char * const *)toks, &v)) {
1.173 schwarze 1064: case 0:
1.103 schwarze 1065: curp->wstop = 1;
1.1 kristaps 1066: break;
1.173 schwarze 1067: case 1:
1068: case 2:
1.312 schwarze 1069: mandoc_msg_setmin(MANDOCERR_BASE);
1.290 schwarze 1070: break;
1071: case 3:
1.312 schwarze 1072: mandoc_msg_setmin(MANDOCERR_STYLE);
1.1 kristaps 1073: break;
1.290 schwarze 1074: case 4:
1.312 schwarze 1075: mandoc_msg_setmin(MANDOCERR_WARNING);
1.24 kristaps 1076: break;
1.290 schwarze 1077: case 5:
1.312 schwarze 1078: mandoc_msg_setmin(MANDOCERR_ERROR);
1.217 schwarze 1079: break;
1.290 schwarze 1080: case 6:
1.312 schwarze 1081: mandoc_msg_setmin(MANDOCERR_UNSUPP);
1.293 schwarze 1082: break;
1083: case 7:
1.329 schwarze 1084: mandoc_msg_setmin(MANDOCERR_BADARG);
1.293 schwarze 1085: break;
1086: case 8:
1.312 schwarze 1087: mandoc_msg_setmin(MANDOCERR_BASE);
1.293 schwarze 1088: curp->os_e = MANDOC_OS_OPENBSD;
1089: break;
1090: case 9:
1.312 schwarze 1091: mandoc_msg_setmin(MANDOCERR_BASE);
1.293 schwarze 1092: curp->os_e = MANDOC_OS_NETBSD;
1.50 kristaps 1093: break;
1.1 kristaps 1094: default:
1.329 schwarze 1095: mandoc_msg(MANDOCERR_BADARG_BAD, 0, 0, "-W %s", o);
1096: return -1;
1.1 kristaps 1097: }
1.34 kristaps 1098: }
1.329 schwarze 1099: return 0;
1.333 ! schwarze 1100: }
! 1101:
! 1102: /*
! 1103: * Wait until moved to the foreground,
! 1104: * then fork the pager and wait for the user to close it.
! 1105: */
! 1106: static void
! 1107: run_pager(struct tag_files *tag_files)
! 1108: {
! 1109: int signum, status;
! 1110: pid_t man_pgid, tc_pgid;
! 1111: pid_t pager_pid, wait_pid;
! 1112:
! 1113: man_pgid = getpgid(0);
! 1114: tag_files->tcpgid = man_pgid == getpid() ? getpgid(getppid()) :
! 1115: man_pgid;
! 1116: pager_pid = 0;
! 1117: signum = SIGSTOP;
! 1118:
! 1119: for (;;) {
! 1120: /* Stop here until moved to the foreground. */
! 1121:
! 1122: tc_pgid = tcgetpgrp(tag_files->ofd);
! 1123: if (tc_pgid != man_pgid) {
! 1124: if (tc_pgid == pager_pid) {
! 1125: (void)tcsetpgrp(tag_files->ofd, man_pgid);
! 1126: if (signum == SIGTTIN)
! 1127: continue;
! 1128: } else
! 1129: tag_files->tcpgid = tc_pgid;
! 1130: kill(0, signum);
! 1131: continue;
! 1132: }
! 1133:
! 1134: /* Once in the foreground, activate the pager. */
! 1135:
! 1136: if (pager_pid) {
! 1137: (void)tcsetpgrp(tag_files->ofd, pager_pid);
! 1138: kill(pager_pid, SIGCONT);
! 1139: } else
! 1140: pager_pid = spawn_pager(tag_files);
! 1141:
! 1142: /* Wait for the pager to stop or exit. */
! 1143:
! 1144: while ((wait_pid = waitpid(pager_pid, &status,
! 1145: WUNTRACED)) == -1 && errno == EINTR)
! 1146: continue;
! 1147:
! 1148: if (wait_pid == -1) {
! 1149: mandoc_msg(MANDOCERR_WAIT, 0, 0,
! 1150: "%s", strerror(errno));
! 1151: break;
! 1152: }
! 1153: if (!WIFSTOPPED(status))
! 1154: break;
! 1155:
! 1156: signum = WSTOPSIG(status);
! 1157: }
1.183 schwarze 1158: }
1159:
1.225 schwarze 1160: static pid_t
1.244 schwarze 1161: spawn_pager(struct tag_files *tag_files)
1.183 schwarze 1162: {
1.265 schwarze 1163: const struct timespec timeout = { 0, 100000000 }; /* 0.1s */
1.184 schwarze 1164: #define MAX_PAGER_ARGS 16
1165: char *argv[MAX_PAGER_ARGS];
1166: const char *pager;
1167: char *cp;
1.322 schwarze 1168: #if HAVE_LESS_T
1.239 schwarze 1169: size_t cmdlen;
1.322 schwarze 1170: #endif
1.309 schwarze 1171: int argc, use_ofn;
1.225 schwarze 1172: pid_t pager_pid;
1.183 schwarze 1173:
1.239 schwarze 1174: pager = getenv("MANPAGER");
1175: if (pager == NULL || *pager == '\0')
1176: pager = getenv("PAGER");
1177: if (pager == NULL || *pager == '\0')
1178: pager = "more -s";
1179: cp = mandoc_strdup(pager);
1180:
1181: /*
1182: * Parse the pager command into words.
1183: * Intentionally do not do anything fancy here.
1184: */
1185:
1186: argc = 0;
1.309 schwarze 1187: while (argc + 5 < MAX_PAGER_ARGS) {
1.239 schwarze 1188: argv[argc++] = cp;
1189: cp = strchr(cp, ' ');
1190: if (cp == NULL)
1191: break;
1192: *cp++ = '\0';
1193: while (*cp == ' ')
1194: cp++;
1195: if (*cp == '\0')
1196: break;
1197: }
1198:
1.268 schwarze 1199: /* For less(1), use the tag file. */
1.239 schwarze 1200:
1.309 schwarze 1201: use_ofn = 1;
1.322 schwarze 1202: #if HAVE_LESS_T
1.332 schwarze 1203: if (*tag_files->tfn != '\0' && (cmdlen = strlen(argv[0])) >= 4) {
1.239 schwarze 1204: cp = argv[0] + cmdlen - 4;
1.268 schwarze 1205: if (strcmp(cp, "less") == 0) {
1.244 schwarze 1206: argv[argc++] = mandoc_strdup("-T");
1207: argv[argc++] = tag_files->tfn;
1.309 schwarze 1208: if (tag_files->tagname != NULL) {
1209: argv[argc++] = mandoc_strdup("-t");
1210: argv[argc++] = tag_files->tagname;
1211: use_ofn = 0;
1212: }
1.244 schwarze 1213: }
1.239 schwarze 1214: }
1.322 schwarze 1215: #endif
1.309 schwarze 1216: if (use_ofn)
1217: argv[argc++] = tag_files->ofn;
1.239 schwarze 1218: argv[argc] = NULL;
1219:
1.225 schwarze 1220: switch (pager_pid = fork()) {
1.183 schwarze 1221: case -1:
1.329 schwarze 1222: mandoc_msg(MANDOCERR_FORK, 0, 0, "%s", strerror(errno));
1223: exit(mandoc_msg_getrc());
1.183 schwarze 1224: case 0:
1.224 schwarze 1225: break;
1226: default:
1.258 schwarze 1227: (void)setpgid(pager_pid, 0);
1.279 schwarze 1228: (void)tcsetpgrp(tag_files->ofd, pager_pid);
1.255 schwarze 1229: #if HAVE_PLEDGE
1.329 schwarze 1230: if (pledge("stdio rpath tmppath tty proc", NULL) == -1) {
1231: mandoc_msg(MANDOCERR_PLEDGE, 0, 0,
1232: "%s", strerror(errno));
1233: exit(mandoc_msg_getrc());
1234: }
1.255 schwarze 1235: #endif
1.259 schwarze 1236: tag_files->pager_pid = pager_pid;
1.245 schwarze 1237: return pager_pid;
1.184 schwarze 1238: }
1239:
1.224 schwarze 1240: /* The child process becomes the pager. */
1.184 schwarze 1241:
1.329 schwarze 1242: if (dup2(tag_files->ofd, STDOUT_FILENO) == -1) {
1243: mandoc_msg(MANDOCERR_DUP, 0, 0, "%s", strerror(errno));
1244: _exit(mandoc_msg_getrc());
1245: }
1.244 schwarze 1246: close(tag_files->ofd);
1.303 schwarze 1247: assert(tag_files->tfd == -1);
1.265 schwarze 1248:
1249: /* Do not start the pager before controlling the terminal. */
1250:
1.279 schwarze 1251: while (tcgetpgrp(STDOUT_FILENO) != getpid())
1.265 schwarze 1252: nanosleep(&timeout, NULL);
1253:
1.184 schwarze 1254: execvp(argv[0], argv);
1.329 schwarze 1255: mandoc_msg(MANDOCERR_EXEC, 0, 0, "%s: %s", argv[0], strerror(errno));
1256: _exit(mandoc_msg_getrc());
1.71 kristaps 1257: }
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