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1.13 ! pjanzen 1: /* $OpenBSD: man.c,v 1.12 1998/11/16 06:28:32 deraadt 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.
16: * 3. All advertising materials mentioning features or use of this software
17: * must display the following acknowledgement:
18: * This product includes software developed by the University of
19: * California, Berkeley and its contributors.
20: * 4. Neither the name of the University nor the names of its contributors
21: * may be used to endorse or promote products derived from this software
22: * without specific prior written permission.
23: *
24: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34: * SUCH DAMAGE.
35: */
36:
37: #ifndef lint
38: static char copyright[] =
39: "@(#) Copyright (c) 1987, 1993, 1994, 1995\n\
40: The Regents of the University of California. All rights reserved.\n";
41: #endif /* not lint */
42:
43: #ifndef lint
44: #if 0
45: static char sccsid[] = "@(#)man.c 8.17 (Berkeley) 1/31/95";
46: #else
1.13 ! pjanzen 47: static char rcsid[] = "$OpenBSD: man.c,v 1.12 1998/11/16 06:28:32 deraadt Exp $";
1.1 deraadt 48: #endif
49: #endif /* not lint */
50:
51: #include <sys/param.h>
52: #include <sys/queue.h>
53:
54: #include <ctype.h>
55: #include <err.h>
56: #include <errno.h>
57: #include <fcntl.h>
58: #include <fnmatch.h>
59: #include <glob.h>
60: #include <signal.h>
61: #include <stdio.h>
1.11 deraadt 62: #include <libgen.h>
1.1 deraadt 63: #include <stdlib.h>
64: #include <string.h>
65: #include <unistd.h>
66:
67: #include "config.h"
68: #include "pathnames.h"
69:
70: int f_all, f_where;
1.9 espie 71: static TAG *section; /* could be passed to cleanup() instead */
1.1 deraadt 72:
1.8 millert 73: extern char *__progname;
74:
1.1 deraadt 75: static void build_page __P((char *, char **));
76: static void cat __P((char *));
77: static char *check_pager __P((char *));
78: static int cleanup __P((void));
79: static void how __P((char *));
80: static void jump __P((char **, char *, char *));
81: static int manual __P((char *, TAG *, glob_t *));
82: static void onsig __P((int));
83: static void usage __P((void));
84:
85: int
86: main(argc, argv)
87: int argc;
88: char *argv[];
89: {
90: extern char *optarg;
91: extern int optind;
1.9 espie 92: TAG *defp, *defnewp, *sectnewp, *subp;
1.1 deraadt 93: ENTRY *e_defp, *e_sectp, *e_subp, *ep;
94: glob_t pg;
95: size_t len;
96: int ch, f_cat, f_how, found;
1.7 millert 97: char **ap, *cmd, *machine, *p, *p_add, *p_path, *pager, *sflag, *slashp;
1.1 deraadt 98: char *conffile, buf[MAXPATHLEN * 2];
1.11 deraadt 99:
100: if (argv[1] == NULL && strcmp(basename(__progname), "help") == 0) {
101: static char *nargv[3];
102: nargv[0] = "man";
103: nargv[1] = "man";
104: nargv[2] = NULL;
105: argv = nargv;
106: argc = 2;
107: }
1.1 deraadt 108:
1.7 millert 109: machine = sflag = NULL;
1.1 deraadt 110: f_cat = f_how = 0;
111: conffile = p_add = p_path = NULL;
1.7 millert 112: while ((ch = getopt(argc, argv, "-aC:cfhkM:m:P:s:S:w")) != -1)
1.1 deraadt 113: switch (ch) {
114: case 'a':
115: f_all = 1;
116: break;
117: case 'C':
118: conffile = optarg;
119: break;
120: case 'c':
121: case '-': /* Deprecated. */
122: f_cat = 1;
123: break;
124: case 'h':
125: f_how = 1;
126: break;
127: case 'm':
128: p_add = optarg;
129: break;
130: case 'M':
131: case 'P': /* Backward compatibility. */
132: p_path = optarg;
133: break;
1.7 millert 134: case 's': /* SVR4 compatibility. */
135: sflag = optarg;
136: break;
137: case 'S':
138: machine = optarg;
139: break;
1.1 deraadt 140: /*
141: * The -f and -k options are backward compatible,
142: * undocumented ways of calling whatis(1) and apropos(1).
143: */
144: case 'f':
145: jump(argv, "-f", "whatis");
146: /* NOTREACHED */
147: case 'k':
148: jump(argv, "-k", "apropos");
149: /* NOTREACHED */
150: case 'w':
151: f_all = f_where = 1;
152: break;
153: case '?':
154: default:
155: usage();
156: }
157: argc -= optind;
158: argv += optind;
159:
160: if (!*argv)
161: usage();
162:
163: if (!f_cat && !f_how && !f_where)
164: if (!isatty(1))
165: f_cat = 1;
1.13 ! pjanzen 166: else if ((pager = getenv("PAGER")) != NULL && (*pager != '\0'))
1.1 deraadt 167: pager = check_pager(pager);
168: else
169: pager = _PATH_PAGER;
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
1.3 michaels 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);
1.3 michaels 270: /* puts it at the end, should be at the top, but then the added
271: entries would be in reverse order, fix later when all are added*/
272: TAILQ_INSERT_TAIL(&defp->list, ep, q);
273: if (e_sectp == NULL) /* save first added, to-be the new top */
274: e_sectp = ep;
1.1 deraadt 275: }
276: }
1.3 michaels 277: if (e_sectp != NULL) { /* entries added, fix order */
278: ep->q.tqe_next = defp->list.tqh_first; /* save original head */
279: defp->list.tqh_first = e_sectp; /* first added entry, new top */
280: *e_sectp->q.tqe_prev = NULL; /* terminate list */
281: }
282: }
1.1 deraadt 283: /*
284: * 4: If no -m was specified, and a section was, rewrite the section's
285: * paths (if they have a trailing slash) to append the _subdir list
286: * and the machine. This then becomes the _default list.
287: */
288: if (p_add == NULL && section != NULL) {
289: sectnewp = addlist("_section_new");
290: for (e_sectp = section->list.tqh_first;
291: e_sectp != NULL; e_sectp = e_sectp->q.tqe_next) {
292: if (e_sectp->s[strlen(e_sectp->s) - 1] != '/') {
293: (void)snprintf(buf, sizeof(buf),
294: "%s{/%s,}", e_sectp->s, machine);
295: if ((ep = malloc(sizeof(ENTRY))) == NULL ||
296: (ep->s = strdup(buf)) == NULL)
297: err(1, NULL);
298: TAILQ_INSERT_TAIL(§newp->list, ep, q);
299: continue;
300: }
301: e_subp = (subp = getlist("_subdir")) == NULL ?
302: NULL : subp->list.tqh_first;
303: for (; e_subp != NULL; e_subp = e_subp->q.tqe_next) {
304: (void)snprintf(buf, sizeof(buf), "%s%s{/%s,}",
305: e_sectp->s, e_subp->s, machine);
306: if ((ep = malloc(sizeof(ENTRY))) == NULL ||
307: (ep->s = strdup(buf)) == NULL)
308: err(1, NULL);
309: TAILQ_INSERT_TAIL(§newp->list, ep, q);
310: }
311: }
312: sectnewp->s = section->s;
313: defp = sectnewp;
314: TAILQ_REMOVE(&head, section, q);
315: }
316:
317: /*
318: * 5: Search for the files. Set up an interrupt handler, so the
319: * temporary files go away.
320: */
321: (void)signal(SIGINT, onsig);
322: (void)signal(SIGHUP, onsig);
323:
324: memset(&pg, 0, sizeof(pg));
325: for (found = 0; *argv; ++argv)
326: if (manual(*argv, defp, &pg))
327: found = 1;
328:
329: /* 6: If nothing found, we're done. */
330: if (!found) {
331: (void)cleanup();
332: exit (1);
333: }
334:
335: /* 7: If it's simple, display it fast. */
336: if (f_cat) {
337: for (ap = pg.gl_pathv; *ap != NULL; ++ap) {
338: if (**ap == '\0')
339: continue;
340: cat(*ap);
341: }
342: exit (cleanup());
343: }
344: if (f_how) {
345: for (ap = pg.gl_pathv; *ap != NULL; ++ap) {
346: if (**ap == '\0')
347: continue;
348: how(*ap);
349: }
350: exit(cleanup());
351: }
352: if (f_where) {
353: for (ap = pg.gl_pathv; *ap != NULL; ++ap) {
354: if (**ap == '\0')
355: continue;
356: (void)printf("%s\n", *ap);
357: }
358: exit(cleanup());
359: }
360:
361: /*
362: * 8: We display things in a single command; build a list of things
363: * to display.
364: */
365: for (ap = pg.gl_pathv, len = strlen(pager) + 1; *ap != NULL; ++ap) {
366: if (**ap == '\0')
367: continue;
368: len += strlen(*ap) + 1;
369: }
370: if ((cmd = malloc(len)) == NULL) {
371: warn(NULL);
372: (void)cleanup();
373: exit(1);
374: }
375: p = cmd;
376: len = strlen(pager);
377: memmove(p, pager, len);
378: p += len;
379: *p++ = ' ';
380: for (ap = pg.gl_pathv; *ap != NULL; ++ap) {
381: if (**ap == '\0')
382: continue;
383: len = strlen(*ap);
384: memmove(p, *ap, len);
385: p += len;
386: *p++ = ' ';
387: }
1.12 deraadt 388: *--p = '\0';
1.1 deraadt 389:
390: /* Use system(3) in case someone's pager is "pager arg1 arg2". */
391: (void)system(cmd);
392:
393: exit(cleanup());
394: }
395:
396: /*
397: * manual --
398: * Search the manuals for the pages.
399: */
400: static int
401: manual(page, tag, pg)
402: char *page;
403: TAG *tag;
404: glob_t *pg;
405: {
406: ENTRY *ep, *e_sufp, *e_tag;
407: TAG *missp, *sufp;
408: int anyfound, cnt, found;
1.6 deraadt 409: char *p, buf[MAXPATHLEN];
1.1 deraadt 410:
411: anyfound = 0;
412: buf[0] = '*';
413:
414: /* For each element in the list... */
415: e_tag = tag == NULL ? NULL : tag->list.tqh_first;
416: for (; e_tag != NULL; e_tag = e_tag->q.tqe_next) {
417: (void)snprintf(buf, sizeof(buf), "%s/%s.*", e_tag->s, page);
418: if (glob(buf,
419: GLOB_APPEND | GLOB_BRACE | GLOB_NOSORT | GLOB_QUOTE,
420: NULL, pg)) {
421: warn("globbing");
422: (void)cleanup();
423: exit(1);
424: }
425: if (pg->gl_matchc == 0)
426: continue;
427:
428: /* Find out if it's really a man page. */
429: for (cnt = pg->gl_pathc - pg->gl_matchc;
430: cnt < pg->gl_pathc; ++cnt) {
431:
432: /*
433: * Try the _suffix key words first.
434: *
435: * XXX
436: * Older versions of man.conf didn't have the suffix
437: * key words, it was assumed that everything was a .0.
438: * We just test for .0 first, it's fast and probably
439: * going to hit.
440: */
441: (void)snprintf(buf, sizeof(buf), "*/%s.0", page);
442: if (!fnmatch(buf, pg->gl_pathv[cnt], 0))
443: goto next;
444:
445: e_sufp = (sufp = getlist("_suffix")) == NULL ?
446: NULL : sufp->list.tqh_first;
447: for (found = 0;
448: e_sufp != NULL; e_sufp = e_sufp->q.tqe_next) {
449: (void)snprintf(buf,
450: sizeof(buf), "*/%s%s", page, e_sufp->s);
451: if (!fnmatch(buf, pg->gl_pathv[cnt], 0)) {
452: found = 1;
453: break;
454: }
455: }
456: if (found)
457: goto next;
458:
459: /* Try the _build key words next. */
460: e_sufp = (sufp = getlist("_build")) == NULL ?
461: NULL : sufp->list.tqh_first;
462: for (found = 0;
463: e_sufp != NULL; e_sufp = e_sufp->q.tqe_next) {
464: for (p = e_sufp->s;
465: *p != '\0' && !isspace(*p); ++p);
466: if (*p == '\0')
467: continue;
468: *p = '\0';
469: (void)snprintf(buf,
470: sizeof(buf), "*/%s%s", page, e_sufp->s);
471: if (!fnmatch(buf, pg->gl_pathv[cnt], 0)) {
472: if (!f_where)
473: build_page(p + 1,
474: &pg->gl_pathv[cnt]);
475: *p = ' ';
476: found = 1;
477: break;
478: }
479: *p = ' ';
480: }
481: if (found) {
482: next: anyfound = 1;
483: if (!f_all) {
484: /* Delete any other matches. */
485: while (++cnt< pg->gl_pathc)
486: pg->gl_pathv[cnt] = "";
487: break;
488: }
489: continue;
490: }
491:
492: /* It's not a man page, forget about it. */
493: pg->gl_pathv[cnt] = "";
494: }
495:
496: if (anyfound && !f_all)
497: break;
498: }
499:
500: /* If not found, enter onto the missing list. */
501: if (!anyfound) {
502: if ((missp = getlist("_missing")) == NULL)
503: missp = addlist("_missing");
504: if ((ep = malloc(sizeof(ENTRY))) == NULL ||
505: (ep->s = strdup(page)) == NULL) {
506: warn(NULL);
507: (void)cleanup();
508: exit(1);
509: }
510: TAILQ_INSERT_TAIL(&missp->list, ep, q);
511: }
512: return (anyfound);
513: }
514:
515: /*
516: * build_page --
517: * Build a man page for display.
518: */
519: static void
520: build_page(fmt, pathp)
521: char *fmt, **pathp;
522: {
523: static int warned;
524: ENTRY *ep;
525: TAG *intmpp;
526: int fd, n;
527: char *p, *b;
1.4 deraadt 528: char buf[MAXPATHLEN], cmd[MAXPATHLEN], tpath[MAXPATHLEN];
1.1 deraadt 529:
530: /* Let the user know this may take awhile. */
531: if (!warned) {
532: warned = 1;
533: warnx("Formatting manual page...");
534: }
535:
536: /*
537: * Historically man chdir'd to the root of the man tree.
538: * This was used in man pages that contained relative ".so"
539: * directives (including other man pages for command aliases etc.)
540: * It even went one step farther, by examining the first line
541: * of the man page and parsing the .so filename so it would
542: * make hard(?) links to the cat'ted man pages for space savings.
543: * (We don't do that here, but we could).
544: */
545:
546: /* copy and find the end */
547: for (b = buf, p = *pathp; (*b++ = *p++) != '\0';)
548: continue;
549:
550: /* skip the last two path components, page name and man[n] */
551: for (--b, n = 2; b != buf; b--)
552: if (*b == '/')
553: if (--n == 0) {
554: *b = '\0';
555: (void) chdir(buf);
556: }
557:
558:
559: /* Add a remove-when-done list. */
560: if ((intmpp = getlist("_intmp")) == NULL)
561: intmpp = addlist("_intmp");
562:
563: /* Move to the printf(3) format string. */
564: for (; *fmt && isspace(*fmt); ++fmt);
565:
566: /*
567: * Get a temporary file and build a version of the file
568: * to display. Replace the old file name with the new one.
569: */
1.4 deraadt 570: (void)strcpy(tpath, _PATH_TMPFILE);
1.1 deraadt 571: if ((fd = mkstemp(tpath)) == -1) {
572: warn("%s", tpath);
573: (void)cleanup();
574: exit(1);
575: }
576: (void)snprintf(buf, sizeof(buf), "%s > %s", fmt, tpath);
577: (void)snprintf(cmd, sizeof(cmd), buf, *pathp);
578: (void)system(cmd);
579: (void)close(fd);
580: if ((*pathp = strdup(tpath)) == NULL) {
581: warn(NULL);
582: (void)cleanup();
583: exit(1);
584: }
585:
586: /* Link the built file into the remove-when-done list. */
587: if ((ep = malloc(sizeof(ENTRY))) == NULL) {
588: warn(NULL);
589: (void)cleanup();
590: exit(1);
591: }
592: ep->s = *pathp;
593: TAILQ_INSERT_TAIL(&intmpp->list, ep, q);
594: }
595:
596: /*
597: * how --
598: * display how information
599: */
600: static void
601: how(fname)
602: char *fname;
603: {
604: FILE *fp;
605:
606: int lcnt, print;
607: char *p, buf[256];
608:
609: if (!(fp = fopen(fname, "r"))) {
610: warn("%s", fname);
611: (void)cleanup();
612: exit (1);
613: }
614: #define S1 "SYNOPSIS"
615: #define S2 "S\bSY\bYN\bNO\bOP\bPS\bSI\bIS\bS"
616: #define D1 "DESCRIPTION"
617: #define D2 "D\bDE\bES\bSC\bCR\bRI\bIP\bPT\bTI\bIO\bON\bN"
618: for (lcnt = print = 0; fgets(buf, sizeof(buf), fp);) {
619: if (!strncmp(buf, S1, sizeof(S1) - 1) ||
620: !strncmp(buf, S2, sizeof(S2) - 1)) {
621: print = 1;
622: continue;
623: } else if (!strncmp(buf, D1, sizeof(D1) - 1) ||
624: !strncmp(buf, D2, sizeof(D2) - 1))
625: return;
626: if (!print)
627: continue;
628: if (*buf == '\n')
629: ++lcnt;
630: else {
631: for(; lcnt; --lcnt)
632: (void)putchar('\n');
633: for (p = buf; isspace(*p); ++p);
634: (void)fputs(p, stdout);
635: }
636: }
637: (void)fclose(fp);
638: }
639:
640: /*
641: * cat --
642: * cat out the file
643: */
644: static void
645: cat(fname)
646: char *fname;
647: {
648: int fd, n;
649: char buf[2048];
650:
651: if ((fd = open(fname, O_RDONLY, 0)) < 0) {
652: warn("%s", fname);
653: (void)cleanup();
654: exit(1);
655: }
656: while ((n = read(fd, buf, sizeof(buf))) > 0)
657: if (write(STDOUT_FILENO, buf, n) != n) {
658: warn("write");
659: (void)cleanup();
660: exit (1);
661: }
662: if (n == -1) {
663: warn("read");
664: (void)cleanup();
665: exit(1);
666: }
667: (void)close(fd);
668: }
669:
670: /*
671: * check_pager --
672: * check the user supplied page information
673: */
674: static char *
675: check_pager(name)
676: char *name;
677: {
678: char *p, *save;
679:
680: /*
681: * if the user uses "more", we make it "more -s"; watch out for
682: * PAGER = "mypager /usr/ucb/more"
683: */
684: for (p = name; *p && !isspace(*p); ++p);
685: for (; p > name && *p != '/'; --p);
686: if (p != name)
687: ++p;
688:
689: /* make sure it's "more", not "morex" */
690: if (!strncmp(p, "more", 4) && (!p[4] || isspace(p[4]))){
691: save = name;
692: /* allocate space to add the "-s" */
693: if (!(name =
694: malloc((u_int)(strlen(save) + sizeof("-s") + 1))))
695: err(1, NULL);
696: (void)sprintf(name, "%s %s", save, "-s");
697: }
698: return(name);
699: }
700:
701: /*
702: * jump --
703: * strip out flag argument and jump
704: */
705: static void
706: jump(argv, flag, name)
707: char **argv, *flag, *name;
708: {
709: char **arg;
710:
711: argv[0] = name;
712: for (arg = argv + 1; *arg; ++arg)
713: if (!strcmp(*arg, flag))
714: break;
715: for (; *arg; ++arg)
716: arg[0] = arg[1];
717: execvp(name, argv);
718: (void)fprintf(stderr, "%s: Command not found.\n", name);
719: exit(1);
720: }
721:
722: /*
723: * onsig --
724: * If signaled, delete the temporary files.
725: */
726: static void
727: onsig(signo)
728: int signo;
729: {
730: (void)cleanup();
731:
732: (void)signal(signo, SIG_DFL);
733: (void)kill(getpid(), signo);
734:
735: /* NOTREACHED */
736: exit (1);
737: }
738:
739: /*
740: * cleanup --
741: * Clean up temporary files, show any error messages.
742: */
743: static int
744: cleanup()
745: {
746: TAG *intmpp, *missp;
747: ENTRY *ep;
748: int rval;
749:
750: rval = 0;
751: ep = (missp = getlist("_missing")) == NULL ?
752: NULL : missp->list.tqh_first;
753: if (ep != NULL)
754: for (; ep != NULL; ep = ep->q.tqe_next) {
1.9 espie 755: if (section)
756: warnx("no entry for %s in section %s of the manual.",
757: ep->s, section->s);
758: else
759: warnx("no entry for %s in the manual.", ep->s);
1.1 deraadt 760: rval = 1;
761: }
762:
763: ep = (intmpp = getlist("_intmp")) == NULL ?
764: NULL : intmpp->list.tqh_first;
765: for (; ep != NULL; ep = ep->q.tqe_next)
766: (void)unlink(ep->s);
767: return (rval);
768: }
769:
770: /*
771: * usage --
772: * print usage message and die
773: */
774: static void
775: usage()
776: {
1.8 millert 777: (void)fprintf(stderr, "usage: %s [-achw] [-C file] [-M path] [-m path] "
778: "[-s section] [-S subsection] [section] title ...\n", __progname);
1.10 deraadt 779: (void)fprintf(stderr, "usage: %s -k keyword\n", __progname);
780: (void)fprintf(stderr, "usage: %s -f command\n", __progname);
1.1 deraadt 781: exit(1);
782: }