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-rw-r--r--usr.sbin/mtree/spec.c280
1 files changed, 280 insertions, 0 deletions
diff --git a/usr.sbin/mtree/spec.c b/usr.sbin/mtree/spec.c
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+/*-
+ * Copyright (c) 1989, 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef lint
+static char sccsid[] = "@(#)spec.c 8.1 (Berkeley) 6/6/93";
+#endif /* not lint */
+
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fts.h>
+#include <pwd.h>
+#include <grp.h>
+#include <errno.h>
+#include <unistd.h>
+#include <stdio.h>
+#include <ctype.h>
+#include "mtree.h"
+#include "extern.h"
+
+int lineno; /* Current spec line number. */
+
+static void set __P((char *, NODE *));
+static void unset __P((char *, NODE *));
+
+NODE *
+spec()
+{
+ register NODE *centry, *last;
+ register char *p;
+ NODE ginfo, *root;
+ int c_cur, c_next;
+ char buf[2048];
+
+ root = NULL;
+ bzero(&ginfo, sizeof(ginfo));
+ c_cur = c_next = 0;
+ for (lineno = 1; fgets(buf, sizeof(buf), stdin);
+ ++lineno, c_cur = c_next, c_next = 0) {
+ /* Skip empty lines. */
+ if (buf[0] == '\n')
+ continue;
+
+ /* Find end of line. */
+ if ((p = index(buf, '\n')) == NULL)
+ err("line %d too long", lineno);
+
+ /* See if next line is continuation line. */
+ if (p[-1] == '\\') {
+ --p;
+ c_next = 1;
+ }
+
+ /* Null-terminate the line. */
+ *p = '\0';
+
+ /* Skip leading whitespace. */
+ for (p = buf; *p && isspace(*p); ++p);
+
+ /* If nothing but whitespace or comment char, continue. */
+ if (!*p || *p == '#')
+ continue;
+
+#ifdef DEBUG
+ (void)fprintf(stderr, "line %d: {%s}\n", lineno, p);
+#endif
+ if (c_cur) {
+ set(p, centry);
+ continue;
+ }
+
+ /* Grab file name, "$", "set", or "unset". */
+ if ((p = strtok(p, "\n\t ")) == NULL)
+ err("missing field");
+
+ if (p[0] == '/')
+ switch(p[1]) {
+ case 's':
+ if (strcmp(p + 1, "set"))
+ break;
+ set(NULL, &ginfo);
+ continue;
+ case 'u':
+ if (strcmp(p + 1, "unset"))
+ break;
+ unset(NULL, &ginfo);
+ continue;
+ }
+
+ if (index(p, '/'))
+ err("slash character in file name");
+
+ if (!strcmp(p, "..")) {
+ /* Don't go up, if haven't gone down. */
+ if (!root)
+ goto noparent;
+ if (last->type != F_DIR || last->flags & F_DONE) {
+ if (last == root)
+ goto noparent;
+ last = last->parent;
+ }
+ last->flags |= F_DONE;
+ continue;
+
+noparent: err("no parent node");
+ }
+
+ if ((centry = calloc(1, sizeof(NODE) + strlen(p))) == NULL)
+ err("%s", strerror(errno));
+ *centry = ginfo;
+ (void)strcpy(centry->name, p);
+#define MAGIC "?*["
+ if (strpbrk(p, MAGIC))
+ centry->flags |= F_MAGIC;
+ set(NULL, centry);
+
+ if (!root) {
+ last = root = centry;
+ root->parent = root;
+ } else if (last->type == F_DIR && !(last->flags & F_DONE)) {
+ centry->parent = last;
+ last = last->child = centry;
+ } else {
+ centry->parent = last->parent;
+ centry->prev = last;
+ last = last->next = centry;
+ }
+ }
+ return (root);
+}
+
+static void
+set(t, ip)
+ char *t;
+ register NODE *ip;
+{
+ register int type;
+ register char *kw, *val;
+ struct group *gr;
+ struct passwd *pw;
+ mode_t *m;
+ int value;
+ char *ep;
+
+ for (; kw = strtok(t, "= \t\n"); t = NULL) {
+ ip->flags |= type = parsekey(kw, &value);
+ if (value && (val = strtok(NULL, " \t\n")) == NULL)
+ err("missing value");
+ switch(type) {
+ case F_CKSUM:
+ ip->cksum = strtoul(val, &ep, 10);
+ if (*ep)
+ err("invalid checksum %s", val);
+ break;
+ case F_GID:
+ ip->st_gid = strtoul(val, &ep, 10);
+ if (*ep)
+ err("invalid gid %s", val);
+ break;
+ case F_GNAME:
+ if ((gr = getgrnam(val)) == NULL)
+ err("unknown group %s", val);
+ ip->st_gid = gr->gr_gid;
+ break;
+ case F_IGN:
+ /* just set flag bit */
+ break;
+ case F_MODE:
+ if ((m = setmode(val)) == NULL)
+ err("invalid file mode %s", val);
+ ip->st_mode = getmode(m, 0);
+ break;
+ case F_NLINK:
+ ip->st_nlink = strtoul(val, &ep, 10);
+ if (*ep)
+ err("invalid link count %s", val);
+ break;
+ case F_SIZE:
+ ip->st_size = strtoul(val, &ep, 10);
+ if (*ep)
+ err("invalid size %s", val);
+ break;
+ case F_SLINK:
+ if ((ip->slink = strdup(val)) == NULL)
+ err("%s", strerror(errno));
+ break;
+ case F_TIME:
+ ip->st_mtimespec.ts_sec = strtoul(val, &ep, 10);
+ if (*ep != '.')
+ err("invalid time %s", val);
+ val = ep + 1;
+ ip->st_mtimespec.ts_nsec = strtoul(val, &ep, 10);
+ if (*ep)
+ err("invalid time %s", val);
+ break;
+ case F_TYPE:
+ switch(*val) {
+ case 'b':
+ if (!strcmp(val, "block"))
+ ip->type = F_BLOCK;
+ break;
+ case 'c':
+ if (!strcmp(val, "char"))
+ ip->type = F_CHAR;
+ break;
+ case 'd':
+ if (!strcmp(val, "dir"))
+ ip->type = F_DIR;
+ break;
+ case 'f':
+ if (!strcmp(val, "file"))
+ ip->type = F_FILE;
+ if (!strcmp(val, "fifo"))
+ ip->type = F_FIFO;
+ break;
+ case 'l':
+ if (!strcmp(val, "link"))
+ ip->type = F_LINK;
+ break;
+ case 's':
+ if (!strcmp(val, "socket"))
+ ip->type = F_SOCK;
+ break;
+ default:
+ err("unknown file type %s", val);
+ }
+ break;
+ case F_UID:
+ ip->st_uid = strtoul(val, &ep, 10);
+ if (*ep)
+ err("invalid uid %s", val);
+ break;
+ case F_UNAME:
+ if ((pw = getpwnam(val)) == NULL)
+ err("unknown user %s", val);
+ ip->st_uid = pw->pw_uid;
+ break;
+ }
+ }
+}
+
+static void
+unset(t, ip)
+ char *t;
+ register NODE *ip;
+{
+ register char *p;
+
+ while (p = strtok(t, "\n\t "))
+ ip->flags &= ~parsekey(p, NULL);
+}
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