589 lines
16 KiB
C
589 lines
16 KiB
C
/* $NetBSD: spec.c,v 1.49 2002/12/23 04:40:19 lukem Exp $ */
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/*-
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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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/*-
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* Copyright (c) 2001-2002 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Luke Mewburn of Wasabi Systems.
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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 NetBSD
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* Foundation, Inc. and its contributors.
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* 4. Neither the name of The NetBSD Foundation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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#if defined(__RCSID) && !defined(lint)
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#if 0
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static char sccsid[] = "@(#)spec.c 8.2 (Berkeley) 4/28/95";
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#else
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__RCSID("$NetBSD: spec.c,v 1.49 2002/12/23 04:40:19 lukem Exp $");
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#endif
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#endif /* not lint */
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#include <sys/param.h>
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#include <sys/stat.h>
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#include <ctype.h>
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#include <errno.h>
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#include <grp.h>
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#include <pwd.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <vis.h>
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#include "extern.h"
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#include "pack_dev.h"
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size_t mtree_lineno; /* Current spec line number */
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int Wflag; /* Don't "whack" permissions */
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static dev_t parsedev(char *);
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static void replacenode(NODE *, NODE *);
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static void set(char *, NODE *);
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static void unset(char *, NODE *);
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NODE *
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spec(FILE *fp)
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{
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NODE *centry, *last, *pathparent, *cur;
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char *p, *e, *next;
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NODE ginfo, *root;
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char *buf, *tname;
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size_t tnamelen, plen;
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root = NULL;
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centry = last = NULL;
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tname = NULL;
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tnamelen = 0;
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memset(&ginfo, 0, sizeof(ginfo));
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for (mtree_lineno = 0;
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(buf = fparseln(fp, NULL, &mtree_lineno, NULL,
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FPARSELN_UNESCCOMM | FPARSELN_UNESCCONT | FPARSELN_UNESCESC));
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free(buf)) {
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/* Skip leading whitespace. */
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for (p = buf; *p && isspace((unsigned char)*p); ++p)
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continue;
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/* If nothing but whitespace, continue. */
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if (!*p)
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continue;
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#ifdef DEBUG
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fprintf(stderr, "line %lu: {%s}\n",
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(u_long)mtree_lineno, p);
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#endif
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/* Grab file name, "$", "set", or "unset". */
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next = buf;
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while ((p = strsep(&next, " \t")) != NULL && *p == '\0')
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continue;
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if (p == NULL)
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mtree_err("missing field");
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if (p[0] == '/') {
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if (strcmp(p + 1, "set") == 0)
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set(next, &ginfo);
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else if (strcmp(p + 1, "unset") == 0)
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unset(next, &ginfo);
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else
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mtree_err("invalid specification `%s'", p);
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continue;
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}
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if (strcmp(p, "..") == 0) {
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/* Don't go up, if haven't gone down. */
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if (root == NULL)
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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: mtree_err("no parent node");
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}
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plen = strlen(p) + 1;
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if (plen > tnamelen) {
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tnamelen = plen;
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if ((tname = realloc(tname, tnamelen)) == NULL)
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mtree_err("realloc: %s", strerror(errno));
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}
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if (strunvis(tname, p) == -1)
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mtree_err("strunvis failed on `%s'", p);
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p = tname;
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pathparent = NULL;
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if (strchr(p, '/') != NULL) {
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cur = root;
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for (; (e = strchr(p, '/')) != NULL; p = e+1) {
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if (p == e)
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continue; /* handle // */
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*e = '\0';
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if (strcmp(p, ".") != 0) {
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while (cur &&
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strcmp(cur->name, p) != 0) {
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cur = cur->next;
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}
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}
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if (cur == NULL || cur->type != F_DIR) {
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mtree_err("%s: %s", tname,
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strerror(ENOENT));
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}
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*e = '/';
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pathparent = cur;
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cur = cur->child;
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}
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if (*p == '\0')
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mtree_err("%s: empty leaf element", tname);
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}
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if ((centry = calloc(1, sizeof(NODE) + strlen(p))) == NULL)
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mtree_err("%s", strerror(errno));
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*centry = ginfo;
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centry->lineno = mtree_lineno;
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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(next, centry);
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if (root == NULL) {
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/*
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* empty tree
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*/
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if (strcmp(centry->name, ".") != 0 ||
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centry->type != F_DIR)
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mtree_err(
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"root node must be the directory `.'");
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last = root = centry;
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root->parent = root;
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} else if (pathparent != NULL) {
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/*
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* full path entry
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*/
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centry->parent = pathparent;
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cur = pathparent->child;
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if (cur == NULL) {
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pathparent->child = centry;
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last = centry;
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} else {
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for (; cur != NULL; cur = cur->next) {
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if (strcmp(cur->name, centry->name)
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== 0) {
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/* existing entry; replace */
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replacenode(cur, centry);
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break;
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}
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if (cur->next == NULL) {
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/* last entry; add new */
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cur->next = centry;
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centry->prev = cur;
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break;
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}
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}
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last = cur;
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while (last->next != NULL)
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last = last->next;
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}
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} else if (strcmp(centry->name, ".") == 0) {
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/*
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* duplicate "." entry; always replace
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*/
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replacenode(root, centry);
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} else if (last->type == F_DIR && !(last->flags & F_DONE)) {
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/*
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* new relative child
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* (no duplicate check)
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*/
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centry->parent = last;
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last = last->child = centry;
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} else {
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/*
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* relative entry, up one directory
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* (no duplicate check)
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*/
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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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/*
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* dump_nodes --
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* dump the NODEs from `cur', based in the directory `dir'.
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* if pathlast is none zero, print the path last, otherwise print
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* it first.
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*/
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void
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dump_nodes(const char *dir, NODE *root, int pathlast)
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{
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NODE *cur;
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char path[MAXPATHLEN];
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const char *name;
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for (cur = root; cur != NULL; cur = cur->next) {
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if (cur->type != F_DIR && !matchtags(cur))
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continue;
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if (snprintf(path, sizeof(path), "%s%s%s",
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dir, *dir ? "/" : "", cur->name)
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>= sizeof(path))
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mtree_err("Pathname too long.");
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if (!pathlast)
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printf("%s ", vispath(path));
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#define MATCHFLAG(f) ((keys & (f)) && (cur->flags & (f)))
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if (MATCHFLAG(F_TYPE))
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printf("type=%s ", nodetype(cur->type));
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if (MATCHFLAG(F_UID | F_UNAME)) {
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if (keys & F_UNAME &&
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(name = user_from_uid(cur->st_uid, 1)) != NULL)
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printf("uname=%s ", name);
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else
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printf("uid=%u ", cur->st_uid);
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}
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if (MATCHFLAG(F_GID | F_GNAME)) {
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if (keys & F_GNAME &&
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(name = group_from_gid(cur->st_gid, 1)) != NULL)
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printf("gname=%s ", name);
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else
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printf("gid=%u ", cur->st_gid);
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}
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if (MATCHFLAG(F_MODE))
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printf("mode=%#o ", cur->st_mode);
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if (MATCHFLAG(F_DEV) &&
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(cur->type == F_BLOCK || cur->type == F_CHAR))
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printf("device=%#x ", cur->st_rdev);
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if (MATCHFLAG(F_NLINK))
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printf("nlink=%d ", cur->st_nlink);
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if (MATCHFLAG(F_SLINK))
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printf("link=%s ", cur->slink);
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if (MATCHFLAG(F_SIZE))
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printf("size=%lld ", (long long)cur->st_size);
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if (MATCHFLAG(F_TIME))
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printf("time=%ld.%ld ", (long)cur->st_mtimespec.tv_sec,
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cur->st_mtimespec.tv_nsec);
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if (MATCHFLAG(F_CKSUM))
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printf("cksum=%lu ", cur->cksum);
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if (MATCHFLAG(F_MD5))
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printf("md5=%s ", cur->md5digest);
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if (MATCHFLAG(F_RMD160))
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printf("rmd160=%s ", cur->rmd160digest);
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if (MATCHFLAG(F_SHA1))
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printf("sha1=%s ", cur->sha1digest);
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if (MATCHFLAG(F_FLAGS))
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printf("flags=%s ",
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flags_to_string(cur->st_flags, "none"));
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if (MATCHFLAG(F_IGN))
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printf("ignore ");
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if (MATCHFLAG(F_OPT))
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printf("optional ");
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if (MATCHFLAG(F_TAGS))
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printf("tags=%s ", cur->tags);
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puts(pathlast ? vispath(path) : "");
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if (cur->child)
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dump_nodes(path, cur->child, pathlast);
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}
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}
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/*
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* vispath --
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* strsvis(3) encodes path, which must not be longer than MAXPATHLEN
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* characters long, and returns a pointer to a static buffer containing
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* the result.
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*/
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char *
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vispath(const char *path)
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{
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const char extra[] = { ' ', '\t', '\n', '\\', '#', '\0' };
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static char pathbuf[4*MAXPATHLEN + 1];
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strsvis(pathbuf, path, VIS_CSTYLE, extra);
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return(pathbuf);
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}
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static dev_t
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parsedev(char *arg)
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{
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#define MAX_PACK_ARGS 3
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u_long numbers[MAX_PACK_ARGS];
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char *p, *ep, *dev;
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int argc;
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pack_t *pack;
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dev_t result;
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if ((dev = strchr(arg, ',')) != NULL) {
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*dev++='\0';
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if ((pack = pack_find(arg)) == NULL)
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mtree_err("unknown format `%s'", arg);
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argc = 0;
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while ((p = strsep(&dev, ",")) != NULL) {
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if (*p == '\0')
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mtree_err("missing number");
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numbers[argc++] = strtoul(p, &ep, 0);
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if (*ep != '\0')
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mtree_err("invalid number `%s'",
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p);
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if (argc > MAX_PACK_ARGS)
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mtree_err("too many arguments");
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}
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if (argc < 2)
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mtree_err("not enough arguments");
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result = (*pack)(argc, numbers);
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} else {
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result = (dev_t)strtoul(arg, &ep, 0);
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if (*ep != '\0')
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mtree_err("invalid device `%s'", arg);
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}
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return (result);
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}
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static void
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replacenode(NODE *cur, NODE *new)
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{
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if (cur->type != new->type)
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mtree_err("existing entry type `%s' does not match type `%s'",
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nodetype(cur->type), nodetype(new->type));
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#define REPLACE(x) cur->x = new->x
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#define REPLACESTR(x) if (cur->x) free(cur->x); cur->x = new->x
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REPLACE(st_size);
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REPLACE(st_mtimespec);
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REPLACESTR(slink);
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REPLACE(st_uid);
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REPLACE(st_gid);
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REPLACE(st_mode);
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REPLACE(st_rdev);
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REPLACE(st_flags);
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REPLACE(st_nlink);
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REPLACE(cksum);
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REPLACESTR(md5digest);
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REPLACESTR(rmd160digest);
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REPLACESTR(sha1digest);
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REPLACESTR(tags);
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REPLACE(lineno);
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REPLACE(flags);
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free(new);
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}
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static void
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set(char *t, NODE *ip)
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{
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int type, value, len;
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gid_t gid;
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uid_t uid;
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char *kw, *val, *md, *ep;
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void *m;
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val = NULL;
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while ((kw = strsep(&t, "= \t")) != NULL) {
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if (*kw == '\0')
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continue;
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if (strcmp(kw, "all") == 0)
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mtree_err("invalid keyword `all'");
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ip->flags |= type = parsekey(kw, &value);
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if (value) {
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while ((val = strsep(&t, " \t")) != NULL &&
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*val == '\0')
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continue;
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if (val == NULL)
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mtree_err("missing value");
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}
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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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mtree_err("invalid checksum `%s'", val);
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break;
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case F_DEV:
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ip->st_rdev = parsedev(val);
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break;
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case F_FLAGS:
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if (strcmp("none", val) == 0)
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ip->st_flags = 0;
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else if (string_to_flags(&val, &ip->st_flags, NULL)
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!= 0)
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mtree_err("invalid flag `%s'", val);
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break;
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case F_GID:
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ip->st_gid = (gid_t)strtoul(val, &ep, 10);
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if (*ep)
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mtree_err("invalid gid `%s'", val);
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break;
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case F_GNAME:
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if (Wflag) /* don't parse if whacking */
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break;
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if (gid_from_group(val, &gid) == -1)
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mtree_err("unknown group `%s'", val);
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ip->st_gid = 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_MD5:
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if (val[0]=='0' && val[1]=='x')
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md=&val[2];
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else
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md=val;
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if ((ip->md5digest = strdup(md)) == NULL)
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mtree_err("memory allocation error");
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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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mtree_err("invalid file mode `%s'", val);
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ip->st_mode = getmode(m, 0);
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free(m);
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break;
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case F_NLINK:
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ip->st_nlink = (nlink_t)strtoul(val, &ep, 10);
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if (*ep)
|
|
mtree_err("invalid link count `%s'", val);
|
|
break;
|
|
case F_OPT:
|
|
/* just set flag bit */
|
|
break;
|
|
case F_RMD160:
|
|
if (val[0]=='0' && val[1]=='x')
|
|
md=&val[2];
|
|
else
|
|
md=val;
|
|
if ((ip->rmd160digest = strdup(md)) == NULL)
|
|
mtree_err("memory allocation error");
|
|
break;
|
|
case F_SHA1:
|
|
if (val[0]=='0' && val[1]=='x')
|
|
md=&val[2];
|
|
else
|
|
md=val;
|
|
if ((ip->sha1digest = strdup(md)) == NULL)
|
|
mtree_err("memory allocation error");
|
|
break;
|
|
case F_SIZE:
|
|
ip->st_size = (off_t)strtoll(val, &ep, 10);
|
|
if (*ep)
|
|
mtree_err("invalid size `%s'", val);
|
|
break;
|
|
case F_SLINK:
|
|
if ((ip->slink = strdup(val)) == NULL)
|
|
mtree_err("memory allocation error");
|
|
break;
|
|
case F_TAGS:
|
|
len = strlen(val) + 3; /* "," + str + ",\0" */
|
|
if ((ip->tags = malloc(len)) == NULL)
|
|
mtree_err("memory allocation error");
|
|
snprintf(ip->tags, len, ",%s,", val);
|
|
break;
|
|
case F_TIME:
|
|
ip->st_mtimespec.tv_sec =
|
|
(time_t)strtoul(val, &ep, 10);
|
|
if (*ep != '.')
|
|
mtree_err("invalid time `%s'", val);
|
|
val = ep + 1;
|
|
ip->st_mtimespec.tv_nsec = strtoul(val, &ep, 10);
|
|
if (*ep)
|
|
mtree_err("invalid time `%s'", val);
|
|
break;
|
|
case F_TYPE:
|
|
ip->type = parsetype(val);
|
|
break;
|
|
case F_UID:
|
|
ip->st_uid = (uid_t)strtoul(val, &ep, 10);
|
|
if (*ep)
|
|
mtree_err("invalid uid `%s'", val);
|
|
break;
|
|
case F_UNAME:
|
|
if (Wflag) /* don't parse if whacking */
|
|
break;
|
|
if (uid_from_user(val, &uid) == -1)
|
|
mtree_err("unknown user `%s'", val);
|
|
ip->st_uid = uid;
|
|
break;
|
|
default:
|
|
mtree_err(
|
|
"set(): unsupported key type 0x%x (INTERNAL ERROR)",
|
|
type);
|
|
/* NOTREACHED */
|
|
}
|
|
}
|
|
}
|
|
|
|
static void
|
|
unset(char *t, NODE *ip)
|
|
{
|
|
char *p;
|
|
|
|
while ((p = strsep(&t, " \t")) != NULL) {
|
|
if (*p == '\0')
|
|
continue;
|
|
ip->flags &= ~parsekey(p, NULL);
|
|
}
|
|
}
|