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