mirror of
https://git.hardenedbsd.org/hardenedbsd/HardenedBSD.git
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287 lines
6.9 KiB
C
287 lines
6.9 KiB
C
/*-
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* Copyright (c) 1989, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifndef lint
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static char sccsid[] = "@(#)spec.c 8.1 (Berkeley) 6/6/93";
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#endif /* not lint */
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <fts.h>
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#include <pwd.h>
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#include <grp.h>
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#include <errno.h>
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#include <unistd.h>
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#include <stdio.h>
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#include <ctype.h>
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#include "mtree.h"
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#include "extern.h"
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int lineno; /* Current spec line number. */
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static void set __P((char *, NODE *));
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static void unset __P((char *, NODE *));
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NODE *
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spec()
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{
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register NODE *centry, *last;
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register char *p;
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NODE ginfo, *root;
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int c_cur, c_next;
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char buf[2048];
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centry = last = root = NULL;
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bzero(&ginfo, sizeof(ginfo));
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c_cur = c_next = 0;
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for (lineno = 1; fgets(buf, sizeof(buf), stdin);
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++lineno, c_cur = c_next, c_next = 0) {
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/* Skip empty lines. */
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if (buf[0] == '\n')
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continue;
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/* Find end of line. */
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if ((p = index(buf, '\n')) == NULL)
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err("line %d too long", lineno);
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/* See if next line is continuation line. */
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if (p[-1] == '\\') {
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--p;
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c_next = 1;
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}
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/* Null-terminate the line. */
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*p = '\0';
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/* Skip leading whitespace. */
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for (p = buf; *p && isspace(*p); ++p);
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/* If nothing but whitespace or comment char, continue. */
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if (!*p || *p == '#')
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continue;
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#ifdef DEBUG
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(void)fprintf(stderr, "line %d: {%s}\n", lineno, p);
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#endif
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if (c_cur) {
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set(p, centry);
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continue;
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}
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/* Grab file name, "$", "set", or "unset". */
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if ((p = strtok(p, "\n\t ")) == NULL)
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err("missing field");
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if (p[0] == '/')
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switch(p[1]) {
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case 's':
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if (strcmp(p + 1, "set"))
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break;
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set(NULL, &ginfo);
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continue;
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case 'u':
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if (strcmp(p + 1, "unset"))
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break;
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unset(NULL, &ginfo);
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continue;
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}
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if (index(p, '/'))
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err("slash character in file name");
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if (!strcmp(p, "..")) {
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/* Don't go up, if haven't gone down. */
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if (!root)
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goto noparent;
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if (last->type != F_DIR || last->flags & F_DONE) {
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if (last == root)
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goto noparent;
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last = last->parent;
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}
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last->flags |= F_DONE;
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continue;
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noparent: err("no parent node");
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}
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if ((centry = calloc(1, sizeof(NODE) + strlen(p))) == NULL)
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err("%s", strerror(errno));
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*centry = ginfo;
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(void)strcpy(centry->name, p);
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#define MAGIC "?*["
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if (strpbrk(p, MAGIC))
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centry->flags |= F_MAGIC;
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set(NULL, centry);
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if (!root) {
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last = root = centry;
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root->parent = root;
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} else if (last->type == F_DIR && !(last->flags & F_DONE)) {
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centry->parent = last;
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last = last->child = centry;
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} else {
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centry->parent = last->parent;
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centry->prev = last;
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last = last->next = centry;
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}
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}
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return (root);
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}
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static void
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set(t, ip)
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char *t;
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register NODE *ip;
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{
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register int type;
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register char *kw, *val = NULL;
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struct group *gr;
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struct passwd *pw;
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mode_t *m;
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int value;
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char *ep;
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for (; (kw = strtok(t, "= \t\n")); t = NULL) {
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ip->flags |= type = parsekey(kw, &value);
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if (value && (val = strtok(NULL, " \t\n")) == NULL)
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err("missing value");
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switch(type) {
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case F_CKSUM:
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ip->cksum = strtoul(val, &ep, 10);
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if (*ep)
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err("invalid checksum %s", val);
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break;
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case F_MD5:
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ip->md5digest = strdup(val);
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if(!ip->md5digest) {
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err("%s", strerror(errno));
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}
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break;
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case F_GID:
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ip->st_gid = strtoul(val, &ep, 10);
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if (*ep)
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err("invalid gid %s", val);
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break;
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case F_GNAME:
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if ((gr = getgrnam(val)) == NULL)
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err("unknown group %s", val);
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ip->st_gid = gr->gr_gid;
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break;
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case F_IGN:
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/* just set flag bit */
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break;
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case F_MODE:
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if ((m = setmode(val)) == NULL)
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err("invalid file mode %s", val);
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ip->st_mode = getmode(m, 0);
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break;
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case F_NLINK:
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ip->st_nlink = strtoul(val, &ep, 10);
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if (*ep)
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err("invalid link count %s", val);
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break;
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case F_SIZE:
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ip->st_size = strtoq(val, &ep, 10);
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if (*ep)
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err("invalid size %s", val);
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break;
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case F_SLINK:
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if ((ip->slink = strdup(val)) == NULL)
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err("%s", strerror(errno));
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break;
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case F_TIME:
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ip->st_mtimespec.ts_sec = strtoul(val, &ep, 10);
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if (*ep != '.')
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err("invalid time %s", val);
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val = ep + 1;
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ip->st_mtimespec.ts_nsec = strtoul(val, &ep, 10);
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if (*ep)
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err("invalid time %s", val);
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break;
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case F_TYPE:
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switch(*val) {
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case 'b':
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if (!strcmp(val, "block"))
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ip->type = F_BLOCK;
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break;
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case 'c':
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if (!strcmp(val, "char"))
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ip->type = F_CHAR;
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break;
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case 'd':
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if (!strcmp(val, "dir"))
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ip->type = F_DIR;
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break;
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case 'f':
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if (!strcmp(val, "file"))
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ip->type = F_FILE;
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if (!strcmp(val, "fifo"))
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ip->type = F_FIFO;
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break;
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case 'l':
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if (!strcmp(val, "link"))
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ip->type = F_LINK;
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break;
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case 's':
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if (!strcmp(val, "socket"))
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ip->type = F_SOCK;
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break;
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default:
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err("unknown file type %s", val);
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}
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break;
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case F_UID:
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ip->st_uid = strtoul(val, &ep, 10);
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if (*ep)
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err("invalid uid %s", val);
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break;
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case F_UNAME:
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if ((pw = getpwnam(val)) == NULL)
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err("unknown user %s", val);
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ip->st_uid = pw->pw_uid;
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break;
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}
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}
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}
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static void
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unset(t, ip)
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char *t;
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register NODE *ip;
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{
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register char *p;
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while ((p = strtok(t, "\n\t ")))
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ip->flags &= ~parsekey(p, NULL);
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}
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