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1.28 ! jmc 1: /* $OpenBSD: man.c,v 1.27 2003/12/16 18:58:46 millert Exp $ */
1.1 deraadt 2: /* $NetBSD: man.c,v 1.7 1995/09/28 06:05:34 tls Exp $ */
3:
4: /*
5: * Copyright (c) 1987, 1993, 1994, 1995
6: * The Regents of the University of California. All rights reserved.
7: *
8: * Redistribution and use in source and binary forms, with or without
9: * modification, are permitted provided that the following conditions
10: * are met:
11: * 1. Redistributions of source code must retain the above copyright
12: * notice, this list of conditions and the following disclaimer.
13: * 2. Redistributions in binary form must reproduce the above copyright
14: * notice, this list of conditions and the following disclaimer in the
15: * documentation and/or other materials provided with the distribution.
1.25 millert 16: * 3. Neither the name of the University nor the names of its contributors
1.1 deraadt 17: * may be used to endorse or promote products derived from this software
18: * without specific prior written permission.
19: *
20: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
21: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
24: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30: * SUCH DAMAGE.
31: */
32:
33: #ifndef lint
34: static char copyright[] =
35: "@(#) Copyright (c) 1987, 1993, 1994, 1995\n\
36: The Regents of the University of California. All rights reserved.\n";
37: #endif /* not lint */
38:
39: #ifndef lint
40: #if 0
41: static char sccsid[] = "@(#)man.c 8.17 (Berkeley) 1/31/95";
42: #else
1.28 ! jmc 43: static char rcsid[] = "$OpenBSD: man.c,v 1.27 2003/12/16 18:58:46 millert Exp $";
1.1 deraadt 44: #endif
45: #endif /* not lint */
46:
47: #include <sys/param.h>
48: #include <sys/queue.h>
49:
50: #include <ctype.h>
51: #include <err.h>
52: #include <errno.h>
53: #include <fcntl.h>
54: #include <fnmatch.h>
55: #include <glob.h>
56: #include <signal.h>
57: #include <stdio.h>
1.11 deraadt 58: #include <libgen.h>
1.1 deraadt 59: #include <stdlib.h>
60: #include <string.h>
61: #include <unistd.h>
62:
63: #include "config.h"
64: #include "pathnames.h"
65:
66: int f_all, f_where;
1.9 espie 67: static TAG *section; /* could be passed to cleanup() instead */
1.1 deraadt 68:
1.8 millert 69: extern char *__progname;
70:
1.20 millert 71: static void build_page(char *, char **);
72: static void cat(char *);
73: static char *check_pager(char *);
74: static int cleanup(void);
75: static void how(char *);
76: static void jump(char **, char *, char *);
77: static int manual(char *, TAG *, glob_t *);
78: static void onsig(int);
79: static void usage(void);
1.1 deraadt 80:
1.19 deraadt 81: sigset_t blocksigs;
82:
1.1 deraadt 83: int
1.21 deraadt 84: main(int argc, char *argv[])
1.1 deraadt 85: {
86: extern char *optarg;
87: extern int optind;
1.9 espie 88: TAG *defp, *defnewp, *sectnewp, *subp;
1.1 deraadt 89: ENTRY *e_defp, *e_sectp, *e_subp, *ep;
90: glob_t pg;
91: size_t len;
92: int ch, f_cat, f_how, found;
1.7 millert 93: char **ap, *cmd, *machine, *p, *p_add, *p_path, *pager, *sflag, *slashp;
1.1 deraadt 94: char *conffile, buf[MAXPATHLEN * 2];
1.11 deraadt 95:
96: if (argv[1] == NULL && strcmp(basename(__progname), "help") == 0) {
97: static char *nargv[3];
98: nargv[0] = "man";
1.15 aaron 99: nargv[1] = "help";
1.11 deraadt 100: nargv[2] = NULL;
101: argv = nargv;
102: argc = 2;
103: }
1.1 deraadt 104:
1.7 millert 105: machine = sflag = NULL;
1.1 deraadt 106: f_cat = f_how = 0;
107: conffile = p_add = p_path = NULL;
1.23 millert 108: while ((ch = getopt(argc, argv, "aC:cfhkM:m:P:s:S:w-")) != -1)
1.1 deraadt 109: switch (ch) {
110: case 'a':
111: f_all = 1;
112: break;
113: case 'C':
114: conffile = optarg;
115: break;
116: case 'c':
117: case '-': /* Deprecated. */
118: f_cat = 1;
119: break;
120: case 'h':
121: f_how = 1;
122: break;
123: case 'm':
124: p_add = optarg;
125: break;
126: case 'M':
127: case 'P': /* Backward compatibility. */
128: p_path = optarg;
129: break;
1.7 millert 130: case 's': /* SVR4 compatibility. */
131: sflag = optarg;
132: break;
133: case 'S':
134: machine = optarg;
135: break;
1.1 deraadt 136: /*
1.22 espie 137: * The -f and -k options are backward compatible
138: * ways of calling whatis(1) and apropos(1).
1.1 deraadt 139: */
140: case 'f':
141: jump(argv, "-f", "whatis");
142: /* NOTREACHED */
143: case 'k':
144: jump(argv, "-k", "apropos");
145: /* NOTREACHED */
146: case 'w':
147: f_all = f_where = 1;
148: break;
149: case '?':
150: default:
151: usage();
152: }
153: argc -= optind;
154: argv += optind;
155:
156: if (!*argv)
157: usage();
158:
1.17 millert 159: if (!f_cat && !f_how && !f_where) {
1.1 deraadt 160: if (!isatty(1))
161: f_cat = 1;
1.27 millert 162: else if ((pager = getenv("MANPAGER")) != NULL &&
163: (*pager != '\0'))
164: pager = check_pager(pager);
1.13 pjanzen 165: else if ((pager = getenv("PAGER")) != NULL && (*pager != '\0'))
1.1 deraadt 166: pager = check_pager(pager);
167: else
168: pager = _PATH_PAGER;
1.17 millert 169: }
1.1 deraadt 170:
171: /* Read the configuration file. */
172: config(conffile);
173:
1.7 millert 174: /* Get the machine type unless specified by -S. */
175: if (machine == NULL && (machine = getenv("MACHINE")) == NULL)
1.1 deraadt 176: machine = MACHINE;
177:
178: /* If there's no _default list, create an empty one. */
179: if ((defp = getlist("_default")) == NULL)
180: defp = addlist("_default");
181:
182: /*
183: * 1: If the user specified a MANPATH variable, or set the -M
184: * option, we replace the _default list with the user's list,
185: * appending the entries in the _subdir list and the machine.
186: */
187: if (p_path == NULL)
188: p_path = getenv("MANPATH");
189: if (p_path != NULL) {
190: while ((e_defp = defp->list.tqh_first) != NULL) {
191: free(e_defp->s);
192: TAILQ_REMOVE(&defp->list, e_defp, q);
193: }
194: for (p = strtok(p_path, ":");
195: p != NULL; p = strtok(NULL, ":")) {
196: slashp = p[strlen(p) - 1] == '/' ? "" : "/";
197: e_subp = (subp = getlist("_subdir")) == NULL ?
198: NULL : subp->list.tqh_first;
199: for (; e_subp != NULL; e_subp = e_subp->q.tqe_next) {
200: (void)snprintf(buf, sizeof(buf), "%s%s%s{/%s,}",
201: p, slashp, e_subp->s, machine);
202: if ((ep = malloc(sizeof(ENTRY))) == NULL ||
203: (ep->s = strdup(buf)) == NULL)
204: err(1, NULL);
205: TAILQ_INSERT_TAIL(&defp->list, ep, q);
206: }
207: }
208: }
209:
210: /*
211: * 2: If the user did not specify MANPATH, -M or a section, rewrite
212: * the _default list to include the _subdir list and the machine.
213: */
1.7 millert 214: if (sflag == NULL && argv[1] == NULL)
1.1 deraadt 215: section = NULL;
1.7 millert 216: else {
217: if (sflag != NULL && (section = getlist(sflag)) == NULL)
218: errx(1, "unknown manual section `%s'", sflag);
219: else if (sflag == NULL && (section = getlist(*argv)) != NULL)
220: ++argv;
221: }
1.1 deraadt 222: if (p_path == NULL && section == NULL) {
223: defnewp = addlist("_default_new");
224: e_defp =
225: defp->list.tqh_first == NULL ? NULL : defp->list.tqh_first;
226: for (; e_defp != NULL; e_defp = e_defp->q.tqe_next) {
227: slashp =
228: e_defp->s[strlen(e_defp->s) - 1] == '/' ? "" : "/";
229: e_subp = (subp = getlist("_subdir")) == NULL ?
230: NULL : subp->list.tqh_first;
231: for (; e_subp != NULL; e_subp = e_subp->q.tqe_next) {
232: (void)snprintf(buf, sizeof(buf), "%s%s%s{/%s,}",
233: e_defp->s, slashp, e_subp->s, machine);
234: if ((ep = malloc(sizeof(ENTRY))) == NULL ||
235: (ep->s = strdup(buf)) == NULL)
236: err(1, NULL);
237: TAILQ_INSERT_TAIL(&defnewp->list, ep, q);
238: }
239: }
240: defp = getlist("_default");
241: while ((e_defp = defp->list.tqh_first) != NULL) {
242: free(e_defp->s);
243: TAILQ_REMOVE(&defp->list, e_defp, q);
244: }
245: free(defp->s);
246: TAILQ_REMOVE(&head, defp, q);
247: defnewp = getlist("_default_new");
248: free(defnewp->s);
249: defnewp->s = "_default";
250: defp = defnewp;
251: }
252:
253: /*
254: * 3: If the user set the -m option, insert the user's list before
255: * whatever list we have, again appending the _subdir list and
1.17 millert 256: * the machine.
1.1 deraadt 257: */
1.3 michaels 258: if (p_add != NULL) {
259: e_sectp = NULL;
1.1 deraadt 260: for (p = strtok(p_add, ":"); p != NULL; p = strtok(NULL, ":")) {
261: slashp = p[strlen(p) - 1] == '/' ? "" : "/";
262: e_subp = (subp = getlist("_subdir")) == NULL ?
263: NULL : subp->list.tqh_first;
264: for (; e_subp != NULL; e_subp = e_subp->q.tqe_next) {
265: (void)snprintf(buf, sizeof(buf), "%s%s%s{/%s,}",
266: p, slashp, e_subp->s, machine);
267: if ((ep = malloc(sizeof(ENTRY))) == NULL ||
268: (ep->s = strdup(buf)) == NULL)
269: err(1, NULL);
1.21 deraadt 270: /*
271: * puts it at the end, should be at the top,
272: * but then the added entries would be in
273: * reverse order, fix later when all are added
274: */
1.17 millert 275: TAILQ_INSERT_TAIL(&defp->list, ep, q);
1.21 deraadt 276: if (e_sectp == NULL)
277: /* save first added, to-be the new top */
1.3 michaels 278: e_sectp = ep;
1.1 deraadt 279: }
280: }
1.3 michaels 281: if (e_sectp != NULL) { /* entries added, fix order */
1.21 deraadt 282: /* save original head */
283: ep->q.tqe_next = defp->list.tqh_first;
284: /* first added entry, new top */
285: defp->list.tqh_first = e_sectp;
286: /* terminate list */
287: *e_sectp->q.tqe_prev = NULL;
1.3 michaels 288: }
1.17 millert 289: }
1.1 deraadt 290: /*
291: * 4: If no -m was specified, and a section was, rewrite the section's
292: * paths (if they have a trailing slash) to append the _subdir list
293: * and the machine. This then becomes the _default list.
294: */
295: if (p_add == NULL && section != NULL) {
296: sectnewp = addlist("_section_new");
297: for (e_sectp = section->list.tqh_first;
298: e_sectp != NULL; e_sectp = e_sectp->q.tqe_next) {
299: if (e_sectp->s[strlen(e_sectp->s) - 1] != '/') {
300: (void)snprintf(buf, sizeof(buf),
301: "%s{/%s,}", e_sectp->s, machine);
302: if ((ep = malloc(sizeof(ENTRY))) == NULL ||
303: (ep->s = strdup(buf)) == NULL)
304: err(1, NULL);
305: TAILQ_INSERT_TAIL(§newp->list, ep, q);
306: continue;
307: }
308: e_subp = (subp = getlist("_subdir")) == NULL ?
309: NULL : subp->list.tqh_first;
310: for (; e_subp != NULL; e_subp = e_subp->q.tqe_next) {
311: (void)snprintf(buf, sizeof(buf), "%s%s{/%s,}",
312: e_sectp->s, e_subp->s, machine);
313: if ((ep = malloc(sizeof(ENTRY))) == NULL ||
314: (ep->s = strdup(buf)) == NULL)
315: err(1, NULL);
316: TAILQ_INSERT_TAIL(§newp->list, ep, q);
317: }
318: }
319: sectnewp->s = section->s;
320: defp = sectnewp;
321: TAILQ_REMOVE(&head, section, q);
322: }
323:
324: /*
325: * 5: Search for the files. Set up an interrupt handler, so the
326: * temporary files go away.
327: */
328: (void)signal(SIGINT, onsig);
329: (void)signal(SIGHUP, onsig);
330:
1.19 deraadt 331: sigemptyset(&blocksigs);
332: sigaddset(&blocksigs, SIGINT);
333: sigaddset(&blocksigs, SIGHUP);
334:
1.1 deraadt 335: memset(&pg, 0, sizeof(pg));
336: for (found = 0; *argv; ++argv)
337: if (manual(*argv, defp, &pg))
338: found = 1;
339:
340: /* 6: If nothing found, we're done. */
341: if (!found) {
342: (void)cleanup();
343: exit (1);
344: }
345:
346: /* 7: If it's simple, display it fast. */
347: if (f_cat) {
348: for (ap = pg.gl_pathv; *ap != NULL; ++ap) {
349: if (**ap == '\0')
350: continue;
351: cat(*ap);
352: }
353: exit (cleanup());
354: }
355: if (f_how) {
356: for (ap = pg.gl_pathv; *ap != NULL; ++ap) {
357: if (**ap == '\0')
358: continue;
359: how(*ap);
360: }
361: exit(cleanup());
362: }
363: if (f_where) {
364: for (ap = pg.gl_pathv; *ap != NULL; ++ap) {
365: if (**ap == '\0')
366: continue;
1.17 millert 367: (void)puts(*ap);
1.1 deraadt 368: }
369: exit(cleanup());
370: }
1.17 millert 371:
1.1 deraadt 372: /*
373: * 8: We display things in a single command; build a list of things
374: * to display.
375: */
376: for (ap = pg.gl_pathv, len = strlen(pager) + 1; *ap != NULL; ++ap) {
377: if (**ap == '\0')
378: continue;
379: len += strlen(*ap) + 1;
380: }
381: if ((cmd = malloc(len)) == NULL) {
382: warn(NULL);
383: (void)cleanup();
384: exit(1);
385: }
386: p = cmd;
387: len = strlen(pager);
1.17 millert 388: memcpy(p, pager, len);
1.1 deraadt 389: p += len;
390: *p++ = ' ';
391: for (ap = pg.gl_pathv; *ap != NULL; ++ap) {
392: if (**ap == '\0')
393: continue;
394: len = strlen(*ap);
1.17 millert 395: memcpy(p, *ap, len);
1.1 deraadt 396: p += len;
397: *p++ = ' ';
398: }
1.12 deraadt 399: *--p = '\0';
1.1 deraadt 400:
401: /* Use system(3) in case someone's pager is "pager arg1 arg2". */
402: (void)system(cmd);
403:
404: exit(cleanup());
405: }
406:
407: /*
408: * manual --
409: * Search the manuals for the pages.
410: */
411: static int
1.26 deraadt 412: manual(char *page, TAG *tag, glob_t *pg)
1.1 deraadt 413: {
414: ENTRY *ep, *e_sufp, *e_tag;
415: TAG *missp, *sufp;
416: int anyfound, cnt, found;
1.6 deraadt 417: char *p, buf[MAXPATHLEN];
1.1 deraadt 418:
419: anyfound = 0;
420: buf[0] = '*';
421:
422: /* For each element in the list... */
423: e_tag = tag == NULL ? NULL : tag->list.tqh_first;
424: for (; e_tag != NULL; e_tag = e_tag->q.tqe_next) {
425: (void)snprintf(buf, sizeof(buf), "%s/%s.*", e_tag->s, page);
426: if (glob(buf,
427: GLOB_APPEND | GLOB_BRACE | GLOB_NOSORT | GLOB_QUOTE,
428: NULL, pg)) {
429: warn("globbing");
430: (void)cleanup();
431: exit(1);
432: }
433: if (pg->gl_matchc == 0)
434: continue;
435:
436: /* Find out if it's really a man page. */
437: for (cnt = pg->gl_pathc - pg->gl_matchc;
438: cnt < pg->gl_pathc; ++cnt) {
439:
440: /*
441: * Try the _suffix key words first.
442: *
443: * XXX
444: * Older versions of man.conf didn't have the suffix
445: * key words, it was assumed that everything was a .0.
446: * We just test for .0 first, it's fast and probably
447: * going to hit.
448: */
449: (void)snprintf(buf, sizeof(buf), "*/%s.0", page);
450: if (!fnmatch(buf, pg->gl_pathv[cnt], 0))
451: goto next;
452:
453: e_sufp = (sufp = getlist("_suffix")) == NULL ?
454: NULL : sufp->list.tqh_first;
455: for (found = 0;
456: e_sufp != NULL; e_sufp = e_sufp->q.tqe_next) {
457: (void)snprintf(buf,
458: sizeof(buf), "*/%s%s", page, e_sufp->s);
459: if (!fnmatch(buf, pg->gl_pathv[cnt], 0)) {
460: found = 1;
461: break;
462: }
463: }
464: if (found)
465: goto next;
466:
467: /* Try the _build key words next. */
468: e_sufp = (sufp = getlist("_build")) == NULL ?
469: NULL : sufp->list.tqh_first;
470: for (found = 0;
471: e_sufp != NULL; e_sufp = e_sufp->q.tqe_next) {
472: for (p = e_sufp->s;
473: *p != '\0' && !isspace(*p); ++p);
474: if (*p == '\0')
475: continue;
476: *p = '\0';
477: (void)snprintf(buf,
478: sizeof(buf), "*/%s%s", page, e_sufp->s);
479: if (!fnmatch(buf, pg->gl_pathv[cnt], 0)) {
480: if (!f_where)
481: build_page(p + 1,
482: &pg->gl_pathv[cnt]);
483: *p = ' ';
484: found = 1;
485: break;
486: }
487: *p = ' ';
488: }
489: if (found) {
490: next: anyfound = 1;
491: if (!f_all) {
492: /* Delete any other matches. */
493: while (++cnt< pg->gl_pathc)
494: pg->gl_pathv[cnt] = "";
495: break;
496: }
497: continue;
498: }
499:
500: /* It's not a man page, forget about it. */
501: pg->gl_pathv[cnt] = "";
502: }
503:
504: if (anyfound && !f_all)
505: break;
506: }
507:
508: /* If not found, enter onto the missing list. */
509: if (!anyfound) {
1.19 deraadt 510: sigset_t osigs;
511:
512: sigprocmask(SIG_BLOCK, &blocksigs, &osigs);
513:
1.1 deraadt 514: if ((missp = getlist("_missing")) == NULL)
515: missp = addlist("_missing");
516: if ((ep = malloc(sizeof(ENTRY))) == NULL ||
517: (ep->s = strdup(page)) == NULL) {
518: warn(NULL);
519: (void)cleanup();
520: exit(1);
521: }
522: TAILQ_INSERT_TAIL(&missp->list, ep, q);
1.19 deraadt 523: sigprocmask(SIG_SETMASK, &osigs, NULL);
1.1 deraadt 524: }
525: return (anyfound);
526: }
527:
1.17 millert 528: /*
1.1 deraadt 529: * build_page --
530: * Build a man page for display.
531: */
532: static void
1.21 deraadt 533: build_page(char *fmt, char **pathp)
1.1 deraadt 534: {
535: static int warned;
536: ENTRY *ep;
537: TAG *intmpp;
538: int fd, n;
539: char *p, *b;
1.4 deraadt 540: char buf[MAXPATHLEN], cmd[MAXPATHLEN], tpath[MAXPATHLEN];
1.19 deraadt 541: sigset_t osigs;
1.1 deraadt 542:
543: /* Let the user know this may take awhile. */
544: if (!warned) {
545: warned = 1;
546: warnx("Formatting manual page...");
547: }
548:
549: /*
1.17 millert 550: * Historically man chdir'd to the root of the man tree.
1.1 deraadt 551: * This was used in man pages that contained relative ".so"
552: * directives (including other man pages for command aliases etc.)
553: * It even went one step farther, by examining the first line
554: * of the man page and parsing the .so filename so it would
555: * make hard(?) links to the cat'ted man pages for space savings.
556: * (We don't do that here, but we could).
557: */
1.17 millert 558:
1.1 deraadt 559: /* copy and find the end */
560: for (b = buf, p = *pathp; (*b++ = *p++) != '\0';)
561: continue;
1.17 millert 562:
1.1 deraadt 563: /* skip the last two path components, page name and man[n] */
564: for (--b, n = 2; b != buf; b--)
565: if (*b == '/')
566: if (--n == 0) {
567: *b = '\0';
568: (void) chdir(buf);
569: }
570:
571:
572: /* Add a remove-when-done list. */
1.19 deraadt 573: sigprocmask(SIG_BLOCK, &blocksigs, &osigs);
1.1 deraadt 574: if ((intmpp = getlist("_intmp")) == NULL)
575: intmpp = addlist("_intmp");
1.19 deraadt 576: sigprocmask(SIG_SETMASK, &osigs, NULL);
1.1 deraadt 577:
578: /* Move to the printf(3) format string. */
1.16 deraadt 579: for (; *fmt && isspace(*fmt); ++fmt)
580: ;
1.1 deraadt 581:
582: /*
583: * Get a temporary file and build a version of the file
584: * to display. Replace the old file name with the new one.
585: */
1.18 deraadt 586: (void)strlcpy(tpath, _PATH_TMPFILE, sizeof(tpath));
1.1 deraadt 587: if ((fd = mkstemp(tpath)) == -1) {
588: warn("%s", tpath);
589: (void)cleanup();
590: exit(1);
591: }
592: (void)snprintf(buf, sizeof(buf), "%s > %s", fmt, tpath);
593: (void)snprintf(cmd, sizeof(cmd), buf, *pathp);
594: (void)system(cmd);
595: (void)close(fd);
596: if ((*pathp = strdup(tpath)) == NULL) {
597: warn(NULL);
598: (void)cleanup();
599: exit(1);
600: }
601:
602: /* Link the built file into the remove-when-done list. */
603: if ((ep = malloc(sizeof(ENTRY))) == NULL) {
604: warn(NULL);
605: (void)cleanup();
606: exit(1);
607: }
608: ep->s = *pathp;
609: TAILQ_INSERT_TAIL(&intmpp->list, ep, q);
610: }
611:
612: /*
613: * how --
614: * display how information
615: */
616: static void
1.21 deraadt 617: how(char *fname)
1.1 deraadt 618: {
619: FILE *fp;
620:
621: int lcnt, print;
622: char *p, buf[256];
623:
624: if (!(fp = fopen(fname, "r"))) {
625: warn("%s", fname);
626: (void)cleanup();
627: exit (1);
628: }
629: #define S1 "SYNOPSIS"
630: #define S2 "S\bSY\bYN\bNO\bOP\bPS\bSI\bIS\bS"
631: #define D1 "DESCRIPTION"
632: #define D2 "D\bDE\bES\bSC\bCR\bRI\bIP\bPT\bTI\bIO\bON\bN"
633: for (lcnt = print = 0; fgets(buf, sizeof(buf), fp);) {
634: if (!strncmp(buf, S1, sizeof(S1) - 1) ||
635: !strncmp(buf, S2, sizeof(S2) - 1)) {
636: print = 1;
637: continue;
638: } else if (!strncmp(buf, D1, sizeof(D1) - 1) ||
639: !strncmp(buf, D2, sizeof(D2) - 1))
640: return;
641: if (!print)
642: continue;
643: if (*buf == '\n')
644: ++lcnt;
645: else {
1.17 millert 646: while (lcnt) {
647: --lcnt;
1.1 deraadt 648: (void)putchar('\n');
1.17 millert 649: }
650: for (p = buf; isspace(*p); ++p)
651: ;
1.1 deraadt 652: (void)fputs(p, stdout);
653: }
654: }
655: (void)fclose(fp);
656: }
657:
658: /*
659: * cat --
660: * cat out the file
661: */
662: static void
1.21 deraadt 663: cat(char *fname)
1.1 deraadt 664: {
665: int fd, n;
666: char buf[2048];
667:
668: if ((fd = open(fname, O_RDONLY, 0)) < 0) {
669: warn("%s", fname);
670: (void)cleanup();
671: exit(1);
672: }
673: while ((n = read(fd, buf, sizeof(buf))) > 0)
674: if (write(STDOUT_FILENO, buf, n) != n) {
675: warn("write");
676: (void)cleanup();
677: exit (1);
678: }
679: if (n == -1) {
680: warn("read");
681: (void)cleanup();
682: exit(1);
683: }
684: (void)close(fd);
685: }
686:
687: /*
688: * check_pager --
689: * check the user supplied page information
690: */
691: static char *
1.21 deraadt 692: check_pager(char *name)
1.1 deraadt 693: {
694: char *p, *save;
1.24 deraadt 695: int len;
1.1 deraadt 696:
697: /*
698: * if the user uses "more", we make it "more -s"; watch out for
1.17 millert 699: * PAGER = "mypager /usr/bin/more"
1.1 deraadt 700: */
1.16 deraadt 701: for (p = name; *p && !isspace(*p); ++p)
702: ;
703: for (; p > name && *p != '/'; --p)
704: ;
1.1 deraadt 705: if (p != name)
706: ++p;
707:
708: /* make sure it's "more", not "morex" */
1.27 millert 709: if (!strncmp(p, "more", 4) && (p[4] == '\0' || isspace(p[4]))){
1.1 deraadt 710: save = name;
711: /* allocate space to add the "-s" */
1.24 deraadt 712: len = strlen(save) + 1 + sizeof("-s");
1.27 millert 713: if ((name = malloc(len)) == NULL)
1.1 deraadt 714: err(1, NULL);
1.24 deraadt 715: (void)snprintf(name, len, "%s %s", save, "-s");
1.1 deraadt 716: }
717: return(name);
718: }
719:
720: /*
721: * jump --
722: * strip out flag argument and jump
723: */
724: static void
1.21 deraadt 725: jump(char **argv, char *flag, char *name)
1.1 deraadt 726: {
727: char **arg;
728:
729: argv[0] = name;
730: for (arg = argv + 1; *arg; ++arg)
731: if (!strcmp(*arg, flag))
732: break;
733: for (; *arg; ++arg)
734: arg[0] = arg[1];
735: execvp(name, argv);
736: (void)fprintf(stderr, "%s: Command not found.\n", name);
737: exit(1);
738: }
739:
1.17 millert 740: /*
1.1 deraadt 741: * onsig --
742: * If signaled, delete the temporary files.
743: */
744: static void
1.21 deraadt 745: onsig(int signo)
1.1 deraadt 746: {
1.21 deraadt 747: (void)cleanup(); /* XXX signal race */
1.1 deraadt 748:
749: (void)signal(signo, SIG_DFL);
750: (void)kill(getpid(), signo);
751:
752: /* NOTREACHED */
1.19 deraadt 753: _exit(1);
1.1 deraadt 754: }
755:
756: /*
757: * cleanup --
758: * Clean up temporary files, show any error messages.
759: */
760: static int
1.21 deraadt 761: cleanup(void)
1.1 deraadt 762: {
763: TAG *intmpp, *missp;
764: ENTRY *ep;
765: int rval;
766:
767: rval = 0;
768: ep = (missp = getlist("_missing")) == NULL ?
769: NULL : missp->list.tqh_first;
770: if (ep != NULL)
771: for (; ep != NULL; ep = ep->q.tqe_next) {
1.9 espie 772: if (section)
773: warnx("no entry for %s in section %s of the manual.",
774: ep->s, section->s);
775: else
776: warnx("no entry for %s in the manual.", ep->s);
1.1 deraadt 777: rval = 1;
778: }
779:
780: ep = (intmpp = getlist("_intmp")) == NULL ?
781: NULL : intmpp->list.tqh_first;
782: for (; ep != NULL; ep = ep->q.tqe_next)
783: (void)unlink(ep->s);
784: return (rval);
785: }
786:
787: /*
788: * usage --
789: * print usage message and die
790: */
791: static void
1.21 deraadt 792: usage(void)
1.1 deraadt 793: {
1.8 millert 794: (void)fprintf(stderr, "usage: %s [-achw] [-C file] [-M path] [-m path] "
1.28 ! jmc 795: "[-S subsection] [-s section]\n\t [section] name [...]\n",
! 796: __progname);
! 797: (void)fprintf(stderr, "usage: %s -f command\n", __progname);
1.10 deraadt 798: (void)fprintf(stderr, "usage: %s -k keyword\n", __progname);
1.1 deraadt 799: exit(1);
800: }