Annotation of src/usr.bin/mandoc/main.c, Revision 1.242
1.242 ! schwarze 1: /* $OpenBSD: main.c,v 1.241 2019/07/28 18:22:35 schwarze Exp $ */
1.1 kristaps 2: /*
1.95 schwarze 3: * Copyright (c) 2008-2012 Kristaps Dzonsons <kristaps@bsd.lv>
1.220 schwarze 4: * Copyright (c) 2010-2012, 2014-2019 Ingo Schwarze <schwarze@openbsd.org>
1.86 schwarze 5: * Copyright (c) 2010 Joerg Sonnenberger <joerg@netbsd.org>
1.1 kristaps 6: *
7: * Permission to use, copy, modify, and distribute this software for any
1.2 schwarze 8: * purpose with or without fee is hereby granted, provided that the above
9: * copyright notice and this permission notice appear in all copies.
1.1 kristaps 10: *
1.134 schwarze 11: * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHORS DISCLAIM ALL WARRANTIES
1.2 schwarze 12: * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
1.134 schwarze 13: * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR
1.2 schwarze 14: * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
15: * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
16: * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
17: * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
1.1 kristaps 18: */
19:
1.95 schwarze 20: #include <sys/types.h>
1.207 schwarze 21: #include <sys/ioctl.h>
1.122 schwarze 22: #include <sys/param.h> /* MACHINE */
1.228 schwarze 23: #include <sys/stat.h>
1.129 schwarze 24: #include <sys/wait.h>
1.95 schwarze 25:
1.1 kristaps 26: #include <assert.h>
1.95 schwarze 27: #include <ctype.h>
1.152 schwarze 28: #include <err.h>
1.165 schwarze 29: #include <errno.h>
1.95 schwarze 30: #include <fcntl.h>
1.127 schwarze 31: #include <glob.h>
1.131 schwarze 32: #include <signal.h>
1.1 kristaps 33: #include <stdio.h>
1.17 schwarze 34: #include <stdint.h>
1.1 kristaps 35: #include <stdlib.h>
36: #include <string.h>
1.224 schwarze 37: #include <termios.h>
1.172 schwarze 38: #include <time.h>
1.1 kristaps 39: #include <unistd.h>
40:
1.136 schwarze 41: #include "mandoc_aux.h"
1.30 schwarze 42: #include "mandoc.h"
1.197 schwarze 43: #include "mandoc_xr.h"
1.136 schwarze 44: #include "roff.h"
1.1 kristaps 45: #include "mdoc.h"
46: #include "man.h"
1.214 schwarze 47: #include "mandoc_parse.h"
1.144 schwarze 48: #include "tag.h"
1.136 schwarze 49: #include "main.h"
1.134 schwarze 50: #include "manconf.h"
1.95 schwarze 51: #include "mansearch.h"
52:
1.235 schwarze 53: #define BINM_APROPOS "apropos"
54: #define BINM_MAN "man"
55: #define BINM_MAKEWHATIS "makewhatis"
56: #define BINM_WHATIS "whatis"
57: #define OSENUM MANDOC_OS_OPENBSD
58:
1.95 schwarze 59: enum outmode {
60: OUTMODE_DEF = 0,
61: OUTMODE_FLN,
62: OUTMODE_LST,
63: OUTMODE_ALL,
64: OUTMODE_ONE
65: };
1.1 kristaps 66:
67: enum outt {
1.76 schwarze 68: OUTT_ASCII = 0, /* -Tascii */
1.77 schwarze 69: OUTT_LOCALE, /* -Tlocale */
70: OUTT_UTF8, /* -Tutf8 */
1.76 schwarze 71: OUTT_TREE, /* -Ttree */
1.78 schwarze 72: OUTT_MAN, /* -Tman */
1.76 schwarze 73: OUTT_HTML, /* -Thtml */
1.188 schwarze 74: OUTT_MARKDOWN, /* -Tmarkdown */
1.76 schwarze 75: OUTT_LINT, /* -Tlint */
76: OUTT_PS, /* -Tps */
77: OUTT_PDF /* -Tpdf */
1.1 kristaps 78: };
79:
1.238 schwarze 80: struct outstate {
1.239 schwarze 81: struct tag_files *tag_files; /* Tagging state variables. */
1.196 schwarze 82: void *outdata; /* data for output */
1.239 schwarze 83: int use_pager;
1.75 schwarze 84: int wstop; /* stop after a file with a warning */
1.240 schwarze 85: int had_output; /* Some output was generated. */
1.90 schwarze 86: enum outt outtype; /* which output to use */
1.33 schwarze 87: };
1.174 schwarze 88:
89:
90: int mandocdb(int, char *[]);
1.33 schwarze 91:
1.215 schwarze 92: static void check_xr(void);
1.119 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 *);
1.198 schwarze 97: static int fs_search(const struct mansearch *,
1.119 schwarze 98: const struct manpaths *, int, char**,
99: struct manpage **, size_t *);
1.238 schwarze 100: static void outdata_alloc(struct outstate *, struct manoutput *);
1.237 schwarze 101: static void parse(struct mparse *, int, const char *,
1.238 schwarze 102: struct outstate *, struct manoutput *);
1.231 schwarze 103: static void passthrough(int, int);
1.240 schwarze 104: static void process_onefile(struct mparse *, struct manpage *,
105: int, struct outstate *, struct manconf *);
1.236 schwarze 106: static void run_pager(struct tag_files *);
1.149 schwarze 107: static pid_t spawn_pager(struct tag_files *);
1.184 schwarze 108: static void usage(enum argmode) __attribute__((__noreturn__));
1.237 schwarze 109: static int woptions(char *, enum mandoc_os *, int *);
1.1 kristaps 110:
1.95 schwarze 111: static const int sec_prios[] = {1, 4, 5, 8, 6, 3, 7, 2, 9};
1.110 schwarze 112: static char help_arg[] = "help";
113: static char *help_argv[] = {help_arg, NULL};
1.1 kristaps 114:
1.90 schwarze 115:
1.1 kristaps 116: int
117: main(int argc, char *argv[])
118: {
1.237 schwarze 119: struct manconf conf; /* Manpaths and output options. */
1.238 schwarze 120: struct outstate outst; /* Output state. */
1.237 schwarze 121: struct winsize ws; /* Result of ioctl(TIOCGWINSZ). */
122: struct mansearch search; /* Search options. */
1.241 schwarze 123: struct manpage *res; /* Complete list of search results. */
124: struct manpage *resn; /* Search results for one name. */
1.237 schwarze 125: struct mparse *mp; /* Opaque parser object. */
126: const char *conf_file; /* -C: alternate config file. */
127: const char *os_s; /* -I: Operating system for display. */
1.240 schwarze 128: const char *progname, *sec;
1.237 schwarze 129: char *defpaths; /* -M: override manpaths. */
130: char *auxpaths; /* -m: additional manpaths. */
131: char *oarg; /* -O: output option string. */
132: char *tagarg; /* -O tag: default value. */
1.113 schwarze 133: unsigned char *uc;
1.241 schwarze 134: size_t ressz; /* Number of elements in res[]. */
135: size_t resnsz; /* Number of elements in resn[]. */
136: size_t i, ib, ssz;
1.237 schwarze 137: int options; /* Parser options. */
138: int show_usage; /* Invalid argument: give up. */
1.135 schwarze 139: int prio, best_prio;
1.240 schwarze 140: int startdir;
1.95 schwarze 141: int c;
1.237 schwarze 142: enum mandoc_os os_e; /* Check base system conventions. */
143: enum outmode outmode; /* According to command line. */
1.1 kristaps 144:
1.162 schwarze 145: progname = getprogname();
1.220 schwarze 146: mandoc_msg_setoutfile(stderr);
1.162 schwarze 147: if (strncmp(progname, "mandocdb", 8) == 0 ||
1.235 schwarze 148: strcmp(progname, BINM_MAKEWHATIS) == 0)
1.150 schwarze 149: return mandocdb(argc, argv);
1.19 schwarze 150:
1.231 schwarze 151: if (pledge("stdio rpath tmppath tty proc exec", NULL) == -1) {
152: mandoc_msg(MANDOCERR_PLEDGE, 0, 0, "%s", strerror(errno));
153: return mandoc_msg_getrc();
154: }
1.154 schwarze 155:
1.95 schwarze 156: /* Search options. */
157:
1.134 schwarze 158: memset(&conf, 0, sizeof(conf));
1.237 schwarze 159: conf_file = NULL;
160: defpaths = auxpaths = NULL;
1.95 schwarze 161:
162: memset(&search, 0, sizeof(struct mansearch));
163: search.outkey = "Nd";
1.186 schwarze 164: oarg = NULL;
1.95 schwarze 165:
1.235 schwarze 166: if (strcmp(progname, BINM_MAN) == 0)
1.95 schwarze 167: search.argmode = ARG_NAME;
1.235 schwarze 168: else if (strcmp(progname, BINM_APROPOS) == 0)
1.95 schwarze 169: search.argmode = ARG_EXPR;
1.235 schwarze 170: else if (strcmp(progname, BINM_WHATIS) == 0)
1.95 schwarze 171: search.argmode = ARG_WORD;
1.162 schwarze 172: else if (strncmp(progname, "help", 4) == 0)
1.110 schwarze 173: search.argmode = ARG_NAME;
1.95 schwarze 174: else
175: search.argmode = ARG_FILE;
176:
1.238 schwarze 177: /* Parser options. */
1.95 schwarze 178:
1.238 schwarze 179: options = MPARSE_SO | MPARSE_UTF8 | MPARSE_LATIN1;
1.237 schwarze 180: os_e = MANDOC_OS_OTHER;
181: os_s = NULL;
1.238 schwarze 182:
183: /* Formatter options. */
184:
185: memset(&outst, 0, sizeof(outst));
1.239 schwarze 186: outst.tag_files = NULL;
1.238 schwarze 187: outst.outtype = OUTT_LOCALE;
1.239 schwarze 188: outst.use_pager = 1;
1.1 kristaps 189:
1.95 schwarze 190: show_usage = 0;
191: outmode = OUTMODE_DEF;
192:
1.192 schwarze 193: while ((c = getopt(argc, argv,
194: "aC:cfhI:iK:klM:m:O:S:s:T:VW:w")) != -1) {
195: if (c == 'i' && search.argmode == ARG_EXPR) {
196: optind--;
197: break;
198: }
1.1 kristaps 199: switch (c) {
1.95 schwarze 200: case 'a':
201: outmode = OUTMODE_ALL;
202: break;
203: case 'C':
204: conf_file = optarg;
205: break;
206: case 'c':
1.239 schwarze 207: outst.use_pager = 0;
1.95 schwarze 208: break;
209: case 'f':
210: search.argmode = ARG_WORD;
211: break;
1.98 schwarze 212: case 'h':
1.135 schwarze 213: conf.output.synopsisonly = 1;
1.239 schwarze 214: outst.use_pager = 0;
1.98 schwarze 215: outmode = OUTMODE_ALL;
216: break;
1.90 schwarze 217: case 'I':
1.231 schwarze 218: if (strncmp(optarg, "os=", 3) != 0) {
219: mandoc_msg(MANDOCERR_BADARG_BAD, 0, 0,
220: "-I %s", optarg);
221: return mandoc_msg_getrc();
1.83 schwarze 222: }
1.237 schwarze 223: if (os_s != NULL) {
1.231 schwarze 224: mandoc_msg(MANDOCERR_BADARG_DUPE, 0, 0,
225: "-I %s", optarg);
226: return mandoc_msg_getrc();
1.83 schwarze 227: }
1.237 schwarze 228: os_s = optarg + 3;
1.95 schwarze 229: break;
1.103 schwarze 230: case 'K':
1.231 schwarze 231: options &= ~(MPARSE_UTF8 | MPARSE_LATIN1);
232: if (strcmp(optarg, "utf-8") == 0)
233: options |= MPARSE_UTF8;
234: else if (strcmp(optarg, "iso-8859-1") == 0)
235: options |= MPARSE_LATIN1;
236: else if (strcmp(optarg, "us-ascii") != 0) {
237: mandoc_msg(MANDOCERR_BADARG_BAD, 0, 0,
238: "-K %s", optarg);
239: return mandoc_msg_getrc();
240: }
1.103 schwarze 241: break;
1.95 schwarze 242: case 'k':
243: search.argmode = ARG_EXPR;
244: break;
1.96 schwarze 245: case 'l':
246: search.argmode = ARG_FILE;
247: outmode = OUTMODE_ALL;
248: break;
1.95 schwarze 249: case 'M':
250: defpaths = optarg;
251: break;
1.90 schwarze 252: case 'm':
1.95 schwarze 253: auxpaths = optarg;
1.1 kristaps 254: break;
1.90 schwarze 255: case 'O':
1.186 schwarze 256: oarg = optarg;
1.17 schwarze 257: break;
1.95 schwarze 258: case 'S':
259: search.arch = optarg;
260: break;
261: case 's':
262: search.sec = optarg;
263: break;
1.90 schwarze 264: case 'T':
1.231 schwarze 265: if (strcmp(optarg, "ascii") == 0)
1.238 schwarze 266: outst.outtype = OUTT_ASCII;
1.231 schwarze 267: else if (strcmp(optarg, "lint") == 0) {
1.238 schwarze 268: outst.outtype = OUTT_LINT;
1.231 schwarze 269: mandoc_msg_setoutfile(stdout);
270: mandoc_msg_setmin(MANDOCERR_BASE);
271: } else if (strcmp(optarg, "tree") == 0)
1.238 schwarze 272: outst.outtype = OUTT_TREE;
1.231 schwarze 273: else if (strcmp(optarg, "man") == 0)
1.238 schwarze 274: outst.outtype = OUTT_MAN;
1.231 schwarze 275: else if (strcmp(optarg, "html") == 0)
1.238 schwarze 276: outst.outtype = OUTT_HTML;
1.231 schwarze 277: else if (strcmp(optarg, "markdown") == 0)
1.238 schwarze 278: outst.outtype = OUTT_MARKDOWN;
1.231 schwarze 279: else if (strcmp(optarg, "utf8") == 0)
1.238 schwarze 280: outst.outtype = OUTT_UTF8;
1.231 schwarze 281: else if (strcmp(optarg, "locale") == 0)
1.238 schwarze 282: outst.outtype = OUTT_LOCALE;
1.231 schwarze 283: else if (strcmp(optarg, "ps") == 0)
1.238 schwarze 284: outst.outtype = OUTT_PS;
1.231 schwarze 285: else if (strcmp(optarg, "pdf") == 0)
1.238 schwarze 286: outst.outtype = OUTT_PDF;
1.231 schwarze 287: else {
288: mandoc_msg(MANDOCERR_BADARG_BAD, 0, 0,
289: "-T %s", optarg);
290: return mandoc_msg_getrc();
291: }
1.1 kristaps 292: break;
1.90 schwarze 293: case 'W':
1.238 schwarze 294: if (woptions(optarg, &os_e, &outst.wstop) == -1)
1.231 schwarze 295: return mandoc_msg_getrc();
1.1 kristaps 296: break;
1.95 schwarze 297: case 'w':
298: outmode = OUTMODE_FLN;
299: break;
1.1 kristaps 300: default:
1.95 schwarze 301: show_usage = 1;
302: break;
303: }
304: }
305:
306: if (show_usage)
307: usage(search.argmode);
308:
309: /* Postprocess options. */
310:
311: if (outmode == OUTMODE_DEF) {
312: switch (search.argmode) {
313: case ARG_FILE:
314: outmode = OUTMODE_ALL;
1.239 schwarze 315: outst.use_pager = 0;
1.95 schwarze 316: break;
317: case ARG_NAME:
318: outmode = OUTMODE_ONE;
319: break;
320: default:
321: outmode = OUTMODE_LST;
322: break;
1.186 schwarze 323: }
324: }
325:
326: if (oarg != NULL) {
327: if (outmode == OUTMODE_LST)
328: search.outkey = oarg;
329: else {
330: while (oarg != NULL) {
331: if (manconf_output(&conf.output,
1.229 schwarze 332: strsep(&oarg, ","), 0) == -1)
1.231 schwarze 333: return mandoc_msg_getrc();
1.186 schwarze 334: }
1.95 schwarze 335: }
336: }
337:
1.238 schwarze 338: if (outst.outtype != OUTT_TREE || conf.output.noval == 0)
1.218 schwarze 339: options |= MPARSE_VALIDATE;
340:
1.151 schwarze 341: if (outmode == OUTMODE_FLN ||
342: outmode == OUTMODE_LST ||
343: !isatty(STDOUT_FILENO))
1.239 schwarze 344: outst.use_pager = 0;
1.207 schwarze 345:
1.239 schwarze 346: if (outst.use_pager &&
1.207 schwarze 347: (conf.output.width == 0 || conf.output.indent == 0) &&
1.209 schwarze 348: ioctl(STDOUT_FILENO, TIOCGWINSZ, &ws) != -1 &&
349: ws.ws_col > 1) {
1.207 schwarze 350: if (conf.output.width == 0 && ws.ws_col < 79)
351: conf.output.width = ws.ws_col - 1;
352: if (conf.output.indent == 0 && ws.ws_col < 66)
353: conf.output.indent = 3;
354: }
1.151 schwarze 355:
1.239 schwarze 356: if (outst.use_pager == 0) {
1.231 schwarze 357: if (pledge("stdio rpath", NULL) == -1) {
358: mandoc_msg(MANDOCERR_PLEDGE, 0, 0,
359: "%s", strerror(errno));
360: return mandoc_msg_getrc();
361: }
362: }
1.154 schwarze 363:
1.95 schwarze 364: /* Parse arguments. */
365:
1.124 schwarze 366: if (argc > 0) {
367: argc -= optind;
368: argv += optind;
369: }
1.95 schwarze 370:
1.110 schwarze 371: /*
1.241 schwarze 372: * Quirks for help(1) and man(1),
373: * in particular for a section argument without -s.
1.110 schwarze 374: */
375:
376: if (search.argmode == ARG_NAME) {
1.162 schwarze 377: if (*progname == 'h') {
1.110 schwarze 378: if (argc == 0) {
379: argv = help_argv;
380: argc = 1;
381: }
1.117 schwarze 382: } else if (argc > 1 &&
1.128 schwarze 383: ((uc = (unsigned char *)argv[0]) != NULL) &&
1.113 schwarze 384: ((isdigit(uc[0]) && (uc[1] == '\0' ||
1.226 schwarze 385: isalpha(uc[1]))) ||
1.113 schwarze 386: (uc[0] == 'n' && uc[1] == '\0'))) {
1.128 schwarze 387: search.sec = (char *)uc;
1.110 schwarze 388: argv++;
389: argc--;
390: }
1.122 schwarze 391: if (search.arch == NULL)
392: search.arch = getenv("MACHINE");
393: if (search.arch == NULL)
394: search.arch = MACHINE;
1.241 schwarze 395: if (outmode == OUTMODE_ONE)
396: search.firstmatch = 1;
1.95 schwarze 397: }
398:
1.219 schwarze 399: /*
400: * Use the first argument for -O tag in addition to
401: * using it as a search term for man(1) or apropos(1).
402: */
403:
404: if (conf.output.tag != NULL && *conf.output.tag == '\0') {
405: tagarg = argc > 0 && search.argmode == ARG_EXPR ?
406: strchr(*argv, '=') : NULL;
407: conf.output.tag = tagarg == NULL ? *argv : tagarg + 1;
408: }
409:
1.241 schwarze 410: /* Read the configuration file. */
1.95 schwarze 411:
1.241 schwarze 412: if (search.argmode != ARG_FILE)
413: manconf_parse(&conf, conf_file, defpaths, auxpaths);
1.95 schwarze 414:
1.241 schwarze 415: /* man(1): Resolve each name individually. */
1.95 schwarze 416:
1.241 schwarze 417: if (search.argmode == ARG_NAME) {
418: if (argc < 1)
419: usage(ARG_NAME);
420: for (res = NULL, ressz = 0; argc > 0; argc--, argv++) {
421: (void)mansearch(&search, &conf.manpath,
422: 1, argv, &resn, &resnsz);
423: if (resnsz == 0)
424: (void)fs_search(&search, &conf.manpath,
425: 1, argv, &resn, &resnsz);
426: if (resnsz == 0) {
427: if (strchr(*argv, '/') == NULL) {
428: mandoc_msg_setrc(MANDOCLEVEL_BADARG);
1.208 schwarze 429: continue;
1.241 schwarze 430: }
431: if (access(*argv, R_OK) == -1) {
432: mandoc_msg_setinfilename(*argv);
1.231 schwarze 433: mandoc_msg(MANDOCERR_BADARG_BAD,
434: 0, 0, "%s", strerror(errno));
435: mandoc_msg_setinfilename(NULL);
1.208 schwarze 436: continue;
437: }
1.241 schwarze 438: resnsz = 1;
439: resn = mandoc_calloc(resnsz, sizeof(*res));
440: resn->file = mandoc_strdup(*argv);
441: resn->ipath = SIZE_MAX;
442: resn->form = FORM_SRC;
443: }
444: if (outmode != OUTMODE_ONE || resnsz == 1) {
1.208 schwarze 445: res = mandoc_reallocarray(res,
1.241 schwarze 446: ressz + resnsz, sizeof(*res));
447: memcpy(res + ressz, resn,
448: sizeof(*resn) * resnsz);
449: ressz += resnsz;
450: continue;
1.208 schwarze 451: }
1.95 schwarze 452:
1.241 schwarze 453: /* Search for the best section. */
1.95 schwarze 454:
1.227 schwarze 455: best_prio = 40;
1.241 schwarze 456: for (ib = i = 0; i < resnsz; i++) {
457: sec = resn[i].file;
1.171 schwarze 458: sec += strcspn(sec, "123456789");
459: if (sec[0] == '\0')
1.227 schwarze 460: continue; /* No section at all. */
1.171 schwarze 461: prio = sec_prios[sec[0] - '1'];
1.227 schwarze 462: if (search.sec != NULL) {
463: ssz = strlen(search.sec);
464: if (strncmp(sec, search.sec, ssz) == 0)
465: sec += ssz;
466: } else
467: sec++; /* Prefer without suffix. */
468: if (*sec != '/')
469: prio += 10; /* Wrong dir name. */
470: if (search.sec != NULL &&
471: (strlen(sec) <= ssz + 3 ||
472: strcmp(sec + strlen(sec) - ssz,
473: search.sec) != 0))
474: prio += 20; /* Wrong file ext. */
1.95 schwarze 475: if (prio >= best_prio)
476: continue;
477: best_prio = prio;
1.241 schwarze 478: ib = i;
1.95 schwarze 479: }
1.241 schwarze 480: res = mandoc_reallocarray(res, ressz + 1,
481: sizeof(*res));
482: memcpy(res + ressz++, resn + ib, sizeof(*resn));
1.1 kristaps 483: }
484:
1.241 schwarze 485: /* apropos(1), whatis(1): Process the full search expression. */
486:
487: } else if (search.argmode != ARG_FILE) {
488: if (mansearch(&search, &conf.manpath,
489: argc, argv, &res, &ressz) == 0)
490: usage(search.argmode);
1.95 schwarze 491:
1.241 schwarze 492: if (ressz == 0) {
493: warnx("nothing appropriate");
494: mandoc_msg_setrc(MANDOCLEVEL_BADARG);
1.95 schwarze 495: goto out;
1.241 schwarze 496: }
497:
498: /* mandoc(1): Take command line arguments as file names. */
499:
1.240 schwarze 500: } else {
1.241 schwarze 501: ressz = argc > 0 ? argc : 1;
502: res = mandoc_calloc(ressz, sizeof(*res));
503: for (i = 0; i < ressz; i++) {
1.240 schwarze 504: if (argc > 0)
505: res[i].file = mandoc_strdup(argv[i]);
506: res[i].ipath = SIZE_MAX;
507: res[i].form = FORM_SRC;
508: }
1.95 schwarze 509: }
510:
1.241 schwarze 511: switch (outmode) {
512: case OUTMODE_FLN:
513: for (i = 0; i < ressz; i++)
514: puts(res[i].file);
515: goto out;
516: case OUTMODE_LST:
517: for (i = 0; i < ressz; i++)
518: printf("%s - %s\n", res[i].names,
519: res[i].output == NULL ? "" :
520: res[i].output);
521: goto out;
522: default:
523: break;
1.167 schwarze 524: }
1.95 schwarze 525:
1.231 schwarze 526: if (search.argmode == ARG_FILE && auxpaths != NULL) {
527: if (strcmp(auxpaths, "doc") == 0)
528: options |= MPARSE_MDOC;
529: else if (strcmp(auxpaths, "an") == 0)
530: options |= MPARSE_MAN;
531: }
1.146 schwarze 532:
1.155 schwarze 533: mchars_alloc();
1.237 schwarze 534: mp = mparse_alloc(options, os_e, os_s);
1.76 schwarze 535:
1.208 schwarze 536: /*
537: * Remember the original working directory, if possible.
538: * This will be needed if some names on the command line
539: * are page names and some are relative file names.
540: * Do not error out if the current directory is not
541: * readable: Maybe it won't be needed after all.
542: */
543: startdir = open(".", O_RDONLY | O_DIRECTORY);
544:
1.241 schwarze 545: for (i = 0; i < ressz; i++) {
546: process_onefile(mp, res + i, startdir, &outst, &conf);
1.238 schwarze 547: if (outst.wstop && mandoc_msg_getrc() != MANDOCLEVEL_OK)
1.27 schwarze 548: break;
1.1 kristaps 549: }
1.208 schwarze 550: if (startdir != -1) {
551: (void)fchdir(startdir);
552: close(startdir);
553: }
1.1 kristaps 554:
1.238 schwarze 555: if (outst.outdata != NULL) {
556: switch (outst.outtype) {
1.160 schwarze 557: case OUTT_HTML:
1.238 schwarze 558: html_free(outst.outdata);
1.160 schwarze 559: break;
560: case OUTT_UTF8:
561: case OUTT_LOCALE:
562: case OUTT_ASCII:
1.238 schwarze 563: ascii_free(outst.outdata);
1.160 schwarze 564: break;
565: case OUTT_PDF:
566: case OUTT_PS:
1.238 schwarze 567: pspdf_free(outst.outdata);
1.160 schwarze 568: break;
569: default:
570: break;
571: }
1.158 schwarze 572: }
1.197 schwarze 573: mandoc_xr_free();
1.237 schwarze 574: mparse_free(mp);
1.155 schwarze 575: mchars_free();
1.95 schwarze 576:
577: out:
1.241 schwarze 578: mansearch_free(res, ressz);
1.240 schwarze 579: if (search.argmode != ARG_FILE)
1.134 schwarze 580: manconf_free(&conf);
1.1 kristaps 581:
1.239 schwarze 582: if (outst.tag_files != NULL) {
1.130 schwarze 583: fclose(stdout);
1.144 schwarze 584: tag_write();
1.239 schwarze 585: run_pager(outst.tag_files);
1.144 schwarze 586: tag_unlink();
1.240 schwarze 587: } else if (outst.had_output && outst.outtype != OUTT_LINT)
1.232 schwarze 588: mandoc_msg_summary();
589:
1.215 schwarze 590: return (int)mandoc_msg_getrc();
1.1 kristaps 591: }
592:
1.20 schwarze 593: static void
1.95 schwarze 594: usage(enum argmode argmode)
1.1 kristaps 595: {
1.95 schwarze 596: switch (argmode) {
597: case ARG_FILE:
1.190 schwarze 598: fputs("usage: mandoc [-ac] [-I os=name] "
599: "[-K encoding] [-mdoc | -man] [-O options]\n"
1.133 schwarze 600: "\t [-T output] [-W level] [file ...]\n", stderr);
1.95 schwarze 601: break;
602: case ARG_NAME:
1.190 schwarze 603: fputs("usage: man [-acfhklw] [-C file] [-M path] "
604: "[-m path] [-S subsection]\n"
605: "\t [[-s] section] name ...\n", stderr);
1.95 schwarze 606: break;
607: case ARG_WORD:
1.190 schwarze 608: fputs("usage: whatis [-afk] [-C file] "
1.96 schwarze 609: "[-M path] [-m path] [-O outkey] [-S arch]\n"
610: "\t [-s section] name ...\n", stderr);
1.95 schwarze 611: break;
612: case ARG_EXPR:
1.190 schwarze 613: fputs("usage: apropos [-afk] [-C file] "
1.96 schwarze 614: "[-M path] [-m path] [-O outkey] [-S arch]\n"
1.95 schwarze 615: "\t [-s section] expression ...\n", stderr);
616: break;
617: }
1.47 schwarze 618: exit((int)MANDOCLEVEL_BADARG);
1.119 schwarze 619: }
620:
621: static int
622: fs_lookup(const struct manpaths *paths, size_t ipath,
623: const char *sec, const char *arch, const char *name,
624: struct manpage **res, size_t *ressz)
625: {
1.228 schwarze 626: struct stat sb;
1.127 schwarze 627: glob_t globinfo;
1.119 schwarze 628: struct manpage *page;
629: char *file;
1.177 schwarze 630: int globres;
631: enum form form;
1.119 schwarze 632:
1.127 schwarze 633: form = FORM_SRC;
1.119 schwarze 634: mandoc_asprintf(&file, "%s/man%s/%s.%s",
635: paths->paths[ipath], sec, name, sec);
1.228 schwarze 636: if (stat(file, &sb) != -1)
1.119 schwarze 637: goto found;
638: free(file);
639:
640: mandoc_asprintf(&file, "%s/cat%s/%s.0",
641: paths->paths[ipath], sec, name);
1.228 schwarze 642: if (stat(file, &sb) != -1) {
1.119 schwarze 643: form = FORM_CAT;
644: goto found;
645: }
646: free(file);
647:
648: if (arch != NULL) {
649: mandoc_asprintf(&file, "%s/man%s/%s/%s.%s",
650: paths->paths[ipath], sec, arch, name, sec);
1.228 schwarze 651: if (stat(file, &sb) != -1)
1.119 schwarze 652: goto found;
653: free(file);
654: }
1.127 schwarze 655:
1.145 schwarze 656: mandoc_asprintf(&file, "%s/man%s/%s.[01-9]*",
1.127 schwarze 657: paths->paths[ipath], sec, name);
658: globres = glob(file, 0, NULL, &globinfo);
659: if (globres != 0 && globres != GLOB_NOMATCH)
1.231 schwarze 660: mandoc_msg(MANDOCERR_GLOB, 0, 0,
661: "%s: %s", file, strerror(errno));
1.127 schwarze 662: free(file);
663: if (globres == 0)
664: file = mandoc_strdup(*globinfo.gl_pathv);
665: globfree(&globinfo);
1.228 schwarze 666: if (globres == 0) {
667: if (stat(file, &sb) != -1)
668: goto found;
669: free(file);
670: }
1.199 schwarze 671: if (res != NULL || ipath + 1 != paths->sz)
1.231 schwarze 672: return -1;
1.119 schwarze 673:
1.199 schwarze 674: mandoc_asprintf(&file, "%s.%s", name, sec);
1.228 schwarze 675: globres = stat(file, &sb);
1.199 schwarze 676: free(file);
1.231 schwarze 677: return globres;
1.199 schwarze 678:
1.119 schwarze 679: found:
1.235 schwarze 680: warnx("outdated mandoc.db lacks %s(%s) entry, run %s %s",
681: name, sec, BINM_MAKEWHATIS, paths->paths[ipath]);
1.199 schwarze 682: if (res == NULL) {
683: free(file);
1.231 schwarze 684: return 0;
1.199 schwarze 685: }
1.231 schwarze 686: *res = mandoc_reallocarray(*res, ++*ressz, sizeof(**res));
1.119 schwarze 687: page = *res + (*ressz - 1);
688: page->file = file;
689: page->names = NULL;
690: page->output = NULL;
1.225 schwarze 691: page->bits = NAME_FILE & NAME_MASK;
1.119 schwarze 692: page->ipath = ipath;
693: page->sec = (*sec >= '1' && *sec <= '9') ? *sec - '1' + 1 : 10;
694: page->form = form;
1.231 schwarze 695: return 0;
1.119 schwarze 696: }
697:
1.198 schwarze 698: static int
1.119 schwarze 699: fs_search(const struct mansearch *cfg, const struct manpaths *paths,
700: int argc, char **argv, struct manpage **res, size_t *ressz)
701: {
702: const char *const sections[] =
1.171 schwarze 703: {"1", "8", "6", "2", "3", "5", "7", "4", "9", "3p"};
1.119 schwarze 704: const size_t nsec = sizeof(sections)/sizeof(sections[0]);
705:
706: size_t ipath, isec, lastsz;
707:
708: assert(cfg->argmode == ARG_NAME);
709:
1.198 schwarze 710: if (res != NULL)
711: *res = NULL;
1.119 schwarze 712: *ressz = lastsz = 0;
713: while (argc) {
714: for (ipath = 0; ipath < paths->sz; ipath++) {
715: if (cfg->sec != NULL) {
716: if (fs_lookup(paths, ipath, cfg->sec,
1.231 schwarze 717: cfg->arch, *argv, res, ressz) != -1 &&
1.119 schwarze 718: cfg->firstmatch)
1.231 schwarze 719: return 0;
1.119 schwarze 720: } else for (isec = 0; isec < nsec; isec++)
721: if (fs_lookup(paths, ipath, sections[isec],
1.231 schwarze 722: cfg->arch, *argv, res, ressz) != -1 &&
1.119 schwarze 723: cfg->firstmatch)
1.231 schwarze 724: return 0;
1.119 schwarze 725: }
1.208 schwarze 726: if (res != NULL && *ressz == lastsz &&
1.210 schwarze 727: strchr(*argv, '/') == NULL) {
1.223 schwarze 728: if (cfg->arch != NULL &&
1.235 schwarze 729: arch_valid(cfg->arch, OSENUM) == 0)
1.223 schwarze 730: warnx("Unknown architecture \"%s\".",
731: cfg->arch);
732: else if (cfg->sec == NULL)
1.210 schwarze 733: warnx("No entry for %s in the manual.",
734: *argv);
735: else
736: warnx("No entry for %s in section %s "
737: "of the manual.", *argv, cfg->sec);
738: }
1.119 schwarze 739: lastsz = *ressz;
740: argv++;
741: argc--;
742: }
1.231 schwarze 743: return -1;
1.1 kristaps 744: }
745:
1.27 schwarze 746: static void
1.240 schwarze 747: process_onefile(struct mparse *mp, struct manpage *resp, int startdir,
748: struct outstate *outst, struct manconf *conf)
749: {
750: int fd;
751:
752: /*
753: * Changing directories is not needed in ARG_FILE mode.
754: * Do it on a best-effort basis. Even in case of
755: * failure, some functionality may still work.
756: */
757: if (resp->ipath != SIZE_MAX)
758: (void)chdir(conf->manpath.paths[resp->ipath]);
759: else if (startdir != -1)
760: (void)fchdir(startdir);
761:
762: mandoc_msg_setinfilename(resp->file);
763: if (resp->file != NULL) {
764: if ((fd = mparse_open(mp, resp->file)) == -1) {
765: mandoc_msg(resp->ipath == SIZE_MAX ?
766: MANDOCERR_BADARG_BAD : MANDOCERR_OPEN,
767: 0, 0, "%s", strerror(errno));
768: mandoc_msg_setinfilename(NULL);
769: return;
770: }
771: } else
772: fd = STDIN_FILENO;
773:
774: if (outst->use_pager) {
775: outst->use_pager = 0;
776: outst->tag_files = tag_init(conf->output.tag);
777: }
778:
779: if (outst->had_output && outst->outtype <= OUTT_UTF8) {
780: if (outst->outdata == NULL)
781: outdata_alloc(outst, &conf->output);
782: terminal_sepline(outst->outdata);
783: }
784:
785: if (resp->form == FORM_SRC)
786: parse(mp, fd, resp->file, outst, &conf->output);
787: else {
788: passthrough(fd, conf->output.synopsisonly);
789: outst->had_output = 1;
790: }
791:
792: if (ferror(stdout)) {
793: if (outst->tag_files != NULL) {
794: mandoc_msg(MANDOCERR_WRITE, 0, 0, "%s: %s",
795: outst->tag_files->ofn, strerror(errno));
796: tag_unlink();
797: outst->tag_files = NULL;
798: } else
799: mandoc_msg(MANDOCERR_WRITE, 0, 0, "%s",
800: strerror(errno));
801: }
802: mandoc_msg_setinfilename(NULL);
803: }
804:
805: static void
1.238 schwarze 806: parse(struct mparse *mp, int fd, const char *file,
807: struct outstate *outst, struct manoutput *outconf)
1.52 schwarze 808: {
1.240 schwarze 809: static int previous;
810: struct roff_meta *meta;
1.52 schwarze 811:
1.240 schwarze 812: assert(fd >= 0);
813: if (file == NULL)
814: file = "<stdin>";
1.52 schwarze 815:
1.240 schwarze 816: if (previous)
817: mparse_reset(mp);
818: else
819: previous = 1;
1.52 schwarze 820:
1.237 schwarze 821: mparse_readfd(mp, fd, file);
1.168 schwarze 822: if (fd != STDIN_FILENO)
823: close(fd);
1.1 kristaps 824:
1.51 schwarze 825: /*
1.76 schwarze 826: * With -Wstop and warnings or errors of at least the requested
827: * level, do not produce output.
1.51 schwarze 828: */
829:
1.238 schwarze 830: if (outst->wstop && mandoc_msg_getrc() != MANDOCLEVEL_OK)
1.132 schwarze 831: return;
1.51 schwarze 832:
1.238 schwarze 833: if (outst->outdata == NULL)
834: outdata_alloc(outst, outconf);
835: else if (outst->outtype == OUTT_HTML)
836: html_reset(outst);
1.51 schwarze 837:
1.218 schwarze 838: mandoc_xr_reset();
1.237 schwarze 839: meta = mparse_result(mp);
1.158 schwarze 840:
841: /* Execute the out device, if it exists. */
842:
1.240 schwarze 843: outst->had_output = 1;
1.218 schwarze 844: if (meta->macroset == MACROSET_MDOC) {
1.238 schwarze 845: switch (outst->outtype) {
1.90 schwarze 846: case OUTT_HTML:
1.238 schwarze 847: html_mdoc(outst->outdata, meta);
1.51 schwarze 848: break;
1.90 schwarze 849: case OUTT_TREE:
1.238 schwarze 850: tree_mdoc(outst->outdata, meta);
1.51 schwarze 851: break;
1.90 schwarze 852: case OUTT_MAN:
1.238 schwarze 853: man_mdoc(outst->outdata, meta);
1.78 schwarze 854: break;
1.90 schwarze 855: case OUTT_PDF:
856: case OUTT_ASCII:
857: case OUTT_UTF8:
858: case OUTT_LOCALE:
859: case OUTT_PS:
1.238 schwarze 860: terminal_mdoc(outst->outdata, meta);
1.158 schwarze 861: break;
1.188 schwarze 862: case OUTT_MARKDOWN:
1.238 schwarze 863: markdown_mdoc(outst->outdata, meta);
1.188 schwarze 864: break;
1.158 schwarze 865: default:
866: break;
867: }
868: }
1.218 schwarze 869: if (meta->macroset == MACROSET_MAN) {
1.238 schwarze 870: switch (outst->outtype) {
1.158 schwarze 871: case OUTT_HTML:
1.238 schwarze 872: html_man(outst->outdata, meta);
1.158 schwarze 873: break;
874: case OUTT_TREE:
1.238 schwarze 875: tree_man(outst->outdata, meta);
1.158 schwarze 876: break;
877: case OUTT_MAN:
1.237 schwarze 878: mparse_copy(mp);
1.158 schwarze 879: break;
880: case OUTT_PDF:
881: case OUTT_ASCII:
882: case OUTT_UTF8:
883: case OUTT_LOCALE:
884: case OUTT_PS:
1.238 schwarze 885: terminal_man(outst->outdata, meta);
1.51 schwarze 886: break;
887: default:
888: break;
889: }
1.179 schwarze 890: }
1.215 schwarze 891: if (mandoc_msg_getmin() < MANDOCERR_STYLE)
892: check_xr();
1.197 schwarze 893: }
894:
895: static void
1.215 schwarze 896: check_xr(void)
1.197 schwarze 897: {
898: static struct manpaths paths;
899: struct mansearch search;
900: struct mandoc_xr *xr;
901: size_t sz;
902:
903: if (paths.sz == 0)
904: manpath_base(&paths);
905:
906: for (xr = mandoc_xr_get(); xr != NULL; xr = xr->next) {
1.200 schwarze 907: if (xr->line == -1)
908: continue;
1.197 schwarze 909: search.arch = NULL;
910: search.sec = xr->sec;
911: search.outkey = NULL;
912: search.argmode = ARG_NAME;
913: search.firstmatch = 1;
914: if (mansearch(&search, &paths, 1, &xr->name, NULL, &sz))
1.198 schwarze 915: continue;
1.231 schwarze 916: if (fs_search(&search, &paths, 1, &xr->name, NULL, &sz) != -1)
1.197 schwarze 917: continue;
1.201 schwarze 918: if (xr->count == 1)
1.216 schwarze 919: mandoc_msg(MANDOCERR_XR_BAD, xr->line,
920: xr->pos + 1, "Xr %s %s", xr->name, xr->sec);
1.201 schwarze 921: else
1.216 schwarze 922: mandoc_msg(MANDOCERR_XR_BAD, xr->line,
923: xr->pos + 1, "Xr %s %s (%d times)",
1.201 schwarze 924: xr->name, xr->sec, xr->count);
1.197 schwarze 925: }
1.179 schwarze 926: }
927:
928: static void
1.238 schwarze 929: outdata_alloc(struct outstate *outst, struct manoutput *outconf)
1.179 schwarze 930: {
1.238 schwarze 931: switch (outst->outtype) {
1.179 schwarze 932: case OUTT_HTML:
1.238 schwarze 933: outst->outdata = html_alloc(outconf);
1.179 schwarze 934: break;
935: case OUTT_UTF8:
1.238 schwarze 936: outst->outdata = utf8_alloc(outconf);
1.179 schwarze 937: break;
938: case OUTT_LOCALE:
1.238 schwarze 939: outst->outdata = locale_alloc(outconf);
1.179 schwarze 940: break;
941: case OUTT_ASCII:
1.238 schwarze 942: outst->outdata = ascii_alloc(outconf);
1.179 schwarze 943: break;
944: case OUTT_PDF:
1.238 schwarze 945: outst->outdata = pdf_alloc(outconf);
1.179 schwarze 946: break;
947: case OUTT_PS:
1.238 schwarze 948: outst->outdata = ps_alloc(outconf);
1.179 schwarze 949: break;
950: default:
951: break;
1.51 schwarze 952: }
1.1 kristaps 953: }
954:
1.132 schwarze 955: static void
1.231 schwarze 956: passthrough(int fd, int synopsis_only)
1.95 schwarze 957: {
1.105 schwarze 958: const char synb[] = "S\bSY\bYN\bNO\bOP\bPS\bSI\bIS\bS";
959: const char synr[] = "SYNOPSIS";
960:
961: FILE *stream;
1.164 schwarze 962: char *line, *cp;
963: size_t linesz;
1.180 schwarze 964: ssize_t len, written;
1.231 schwarze 965: int lno, print;
1.116 schwarze 966:
1.231 schwarze 967: stream = NULL;
1.164 schwarze 968: line = NULL;
969: linesz = 0;
1.105 schwarze 970:
1.180 schwarze 971: if (fflush(stdout) == EOF) {
1.231 schwarze 972: mandoc_msg(MANDOCERR_FFLUSH, 0, 0, "%s", strerror(errno));
973: goto done;
1.180 schwarze 974: }
1.105 schwarze 975: if ((stream = fdopen(fd, "r")) == NULL) {
976: close(fd);
1.231 schwarze 977: mandoc_msg(MANDOCERR_FDOPEN, 0, 0, "%s", strerror(errno));
978: goto done;
1.105 schwarze 979: }
1.95 schwarze 980:
1.231 schwarze 981: lno = print = 0;
1.180 schwarze 982: while ((len = getline(&line, &linesz, stream)) != -1) {
1.231 schwarze 983: lno++;
1.164 schwarze 984: cp = line;
1.105 schwarze 985: if (synopsis_only) {
986: if (print) {
1.164 schwarze 987: if ( ! isspace((unsigned char)*cp))
1.105 schwarze 988: goto done;
1.180 schwarze 989: while (isspace((unsigned char)*cp)) {
1.164 schwarze 990: cp++;
1.180 schwarze 991: len--;
992: }
1.105 schwarze 993: } else {
1.164 schwarze 994: if (strcmp(cp, synb) == 0 ||
995: strcmp(cp, synr) == 0)
1.105 schwarze 996: print = 1;
997: continue;
998: }
999: }
1.180 schwarze 1000: for (; len > 0; len -= written) {
1.231 schwarze 1001: if ((written = write(STDOUT_FILENO, cp, len)) == -1) {
1002: mandoc_msg(MANDOCERR_WRITE, 0, 0,
1003: "%s", strerror(errno));
1004: goto done;
1005: }
1.164 schwarze 1006: }
1.105 schwarze 1007: }
1.231 schwarze 1008: if (ferror(stream))
1009: mandoc_msg(MANDOCERR_GETLINE, lno, 0, "%s", strerror(errno));
1.101 schwarze 1010:
1.105 schwarze 1011: done:
1.164 schwarze 1012: free(line);
1.231 schwarze 1013: if (stream != NULL)
1014: fclose(stream);
1.1 kristaps 1015: }
1016:
1017: static int
1.237 schwarze 1018: woptions(char *arg, enum mandoc_os *os_e, int *wstop)
1.1 kristaps 1019: {
1.10 schwarze 1020: char *v, *o;
1.196 schwarze 1021: const char *toks[11];
1.1 kristaps 1022:
1.45 schwarze 1023: toks[0] = "stop";
1024: toks[1] = "all";
1.196 schwarze 1025: toks[2] = "base";
1026: toks[3] = "style";
1027: toks[4] = "warning";
1028: toks[5] = "error";
1029: toks[6] = "unsupp";
1030: toks[7] = "fatal";
1031: toks[8] = "openbsd";
1032: toks[9] = "netbsd";
1033: toks[10] = NULL;
1.1 kristaps 1034:
1.10 schwarze 1035: while (*arg) {
1036: o = arg;
1.176 schwarze 1037: switch (getsubopt(&arg, (char * const *)toks, &v)) {
1.90 schwarze 1038: case 0:
1.237 schwarze 1039: *wstop = 1;
1.1 kristaps 1040: break;
1.90 schwarze 1041: case 1:
1042: case 2:
1.215 schwarze 1043: mandoc_msg_setmin(MANDOCERR_BASE);
1.193 schwarze 1044: break;
1045: case 3:
1.215 schwarze 1046: mandoc_msg_setmin(MANDOCERR_STYLE);
1.1 kristaps 1047: break;
1.193 schwarze 1048: case 4:
1.215 schwarze 1049: mandoc_msg_setmin(MANDOCERR_WARNING);
1.1 kristaps 1050: break;
1.193 schwarze 1051: case 5:
1.215 schwarze 1052: mandoc_msg_setmin(MANDOCERR_ERROR);
1.123 schwarze 1053: break;
1.193 schwarze 1054: case 6:
1.215 schwarze 1055: mandoc_msg_setmin(MANDOCERR_UNSUPP);
1.196 schwarze 1056: break;
1057: case 7:
1.231 schwarze 1058: mandoc_msg_setmin(MANDOCERR_BADARG);
1.196 schwarze 1059: break;
1060: case 8:
1.215 schwarze 1061: mandoc_msg_setmin(MANDOCERR_BASE);
1.237 schwarze 1062: *os_e = MANDOC_OS_OPENBSD;
1.196 schwarze 1063: break;
1064: case 9:
1.215 schwarze 1065: mandoc_msg_setmin(MANDOCERR_BASE);
1.237 schwarze 1066: *os_e = MANDOC_OS_NETBSD;
1.19 schwarze 1067: break;
1.1 kristaps 1068: default:
1.231 schwarze 1069: mandoc_msg(MANDOCERR_BADARG_BAD, 0, 0, "-W %s", o);
1070: return -1;
1.1 kristaps 1071: }
1.10 schwarze 1072: }
1.231 schwarze 1073: return 0;
1.236 schwarze 1074: }
1075:
1076: /*
1077: * Wait until moved to the foreground,
1078: * then fork the pager and wait for the user to close it.
1079: */
1080: static void
1081: run_pager(struct tag_files *tag_files)
1082: {
1083: int signum, status;
1084: pid_t man_pgid, tc_pgid;
1085: pid_t pager_pid, wait_pid;
1086:
1087: man_pgid = getpgid(0);
1088: tag_files->tcpgid = man_pgid == getpid() ? getpgid(getppid()) :
1089: man_pgid;
1090: pager_pid = 0;
1091: signum = SIGSTOP;
1092:
1093: for (;;) {
1094: /* Stop here until moved to the foreground. */
1095:
1096: tc_pgid = tcgetpgrp(tag_files->ofd);
1097: if (tc_pgid != man_pgid) {
1098: if (tc_pgid == pager_pid) {
1099: (void)tcsetpgrp(tag_files->ofd, man_pgid);
1100: if (signum == SIGTTIN)
1101: continue;
1102: } else
1103: tag_files->tcpgid = tc_pgid;
1104: kill(0, signum);
1105: continue;
1106: }
1107:
1108: /* Once in the foreground, activate the pager. */
1109:
1110: if (pager_pid) {
1111: (void)tcsetpgrp(tag_files->ofd, pager_pid);
1112: kill(pager_pid, SIGCONT);
1113: } else
1114: pager_pid = spawn_pager(tag_files);
1115:
1116: /* Wait for the pager to stop or exit. */
1117:
1118: while ((wait_pid = waitpid(pager_pid, &status,
1119: WUNTRACED)) == -1 && errno == EINTR)
1120: continue;
1121:
1122: if (wait_pid == -1) {
1123: mandoc_msg(MANDOCERR_WAIT, 0, 0,
1124: "%s", strerror(errno));
1125: break;
1126: }
1127: if (!WIFSTOPPED(status))
1128: break;
1129:
1130: signum = WSTOPSIG(status);
1131: }
1.95 schwarze 1132: }
1133:
1.130 schwarze 1134: static pid_t
1.149 schwarze 1135: spawn_pager(struct tag_files *tag_files)
1.95 schwarze 1136: {
1.172 schwarze 1137: const struct timespec timeout = { 0, 100000000 }; /* 0.1s */
1.95 schwarze 1138: #define MAX_PAGER_ARGS 16
1139: char *argv[MAX_PAGER_ARGS];
1140: const char *pager;
1141: char *cp;
1.144 schwarze 1142: size_t cmdlen;
1.212 schwarze 1143: int argc, use_ofn;
1.130 schwarze 1144: pid_t pager_pid;
1.95 schwarze 1145:
1.144 schwarze 1146: pager = getenv("MANPAGER");
1147: if (pager == NULL || *pager == '\0')
1148: pager = getenv("PAGER");
1149: if (pager == NULL || *pager == '\0')
1150: pager = "more -s";
1151: cp = mandoc_strdup(pager);
1152:
1153: /*
1154: * Parse the pager command into words.
1155: * Intentionally do not do anything fancy here.
1156: */
1157:
1158: argc = 0;
1.212 schwarze 1159: while (argc + 5 < MAX_PAGER_ARGS) {
1.144 schwarze 1160: argv[argc++] = cp;
1161: cp = strchr(cp, ' ');
1162: if (cp == NULL)
1163: break;
1164: *cp++ = '\0';
1165: while (*cp == ' ')
1166: cp++;
1167: if (*cp == '\0')
1168: break;
1169: }
1170:
1.149 schwarze 1171: /* For more(1) and less(1), use the tag file. */
1.144 schwarze 1172:
1.212 schwarze 1173: use_ofn = 1;
1.234 schwarze 1174: if (*tag_files->tfn != '\0' && (cmdlen = strlen(argv[0])) >= 4) {
1.144 schwarze 1175: cp = argv[0] + cmdlen - 4;
1.149 schwarze 1176: if (strcmp(cp, "less") == 0 || strcmp(cp, "more") == 0) {
1177: argv[argc++] = mandoc_strdup("-T");
1178: argv[argc++] = tag_files->tfn;
1.212 schwarze 1179: if (tag_files->tagname != NULL) {
1180: argv[argc++] = mandoc_strdup("-t");
1181: argv[argc++] = tag_files->tagname;
1182: use_ofn = 0;
1183: }
1.149 schwarze 1184: }
1.144 schwarze 1185: }
1.212 schwarze 1186: if (use_ofn)
1187: argv[argc++] = tag_files->ofn;
1.144 schwarze 1188: argv[argc] = NULL;
1189:
1.130 schwarze 1190: switch (pager_pid = fork()) {
1.95 schwarze 1191: case -1:
1.231 schwarze 1192: mandoc_msg(MANDOCERR_FORK, 0, 0, "%s", strerror(errno));
1193: exit(mandoc_msg_getrc());
1.95 schwarze 1194: case 0:
1.129 schwarze 1195: break;
1196: default:
1.165 schwarze 1197: (void)setpgid(pager_pid, 0);
1.182 schwarze 1198: (void)tcsetpgrp(tag_files->ofd, pager_pid);
1.231 schwarze 1199: if (pledge("stdio rpath tmppath tty proc", NULL) == -1) {
1200: mandoc_msg(MANDOCERR_PLEDGE, 0, 0,
1201: "%s", strerror(errno));
1202: exit(mandoc_msg_getrc());
1203: }
1.166 schwarze 1204: tag_files->pager_pid = pager_pid;
1.150 schwarze 1205: return pager_pid;
1.95 schwarze 1206: }
1207:
1.129 schwarze 1208: /* The child process becomes the pager. */
1.95 schwarze 1209:
1.231 schwarze 1210: if (dup2(tag_files->ofd, STDOUT_FILENO) == -1) {
1211: mandoc_msg(MANDOCERR_DUP, 0, 0, "%s", strerror(errno));
1212: _exit(mandoc_msg_getrc());
1213: }
1.149 schwarze 1214: close(tag_files->ofd);
1.206 tb 1215: assert(tag_files->tfd == -1);
1.172 schwarze 1216:
1217: /* Do not start the pager before controlling the terminal. */
1218:
1.182 schwarze 1219: while (tcgetpgrp(STDOUT_FILENO) != getpid())
1.172 schwarze 1220: nanosleep(&timeout, NULL);
1221:
1.95 schwarze 1222: execvp(argv[0], argv);
1.231 schwarze 1223: mandoc_msg(MANDOCERR_EXEC, 0, 0, "%s: %s", argv[0], strerror(errno));
1224: _exit(mandoc_msg_getrc());
1.30 schwarze 1225: }