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NetBSD/usr.sbin/mtree/spec.c

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/* $NetBSD: spec.c,v 1.36 2001/10/26 16:01:46 lukem Exp $ */
/*-
* 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.
*/
/*-
* Copyright (c) 2001 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Luke Mewburn of Wasabi Systems.
*
* 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 NetBSD
* Foundation, Inc. and its contributors.
* 4. Neither the name of The NetBSD Foundation 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 NETBSD FOUNDATION, INC. 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 FOUNDATION 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.
*/
#include <sys/cdefs.h>
#ifndef lint
#if 0
static char sccsid[] = "@(#)spec.c 8.2 (Berkeley) 4/28/95";
#else
__RCSID("$NetBSD: spec.c,v 1.36 2001/10/26 16:01:46 lukem Exp $");
#endif
#endif /* not lint */
#include <sys/param.h>
#include <sys/stat.h>
#include <ctype.h>
#include <errno.h>
#include <fts.h>
#include <grp.h>
#include <pwd.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <util.h>
#include <vis.h>
#include "mtree.h"
#include "extern.h"
#include "pack_dev.h"
size_t lineno; /* Current spec line number. */
static dev_t parsedev(char *);
static void set(char *, NODE *);
static void unset(char *, NODE *);
NODE *
spec(FILE *fp)
{
NODE *centry, *last, *pathparent, *cur;
char *p, *e, *next;
NODE ginfo, *root;
char *buf, *tname;
size_t tnamelen, plen;
root = NULL;
centry = last = NULL;
tname = NULL;
tnamelen = 0;
memset(&ginfo, 0, sizeof(ginfo));
for (lineno = 0;
(buf = fparseln(fp, NULL, &lineno, NULL,
FPARSELN_UNESCCOMM | FPARSELN_UNESCCONT | FPARSELN_UNESCESC));
free(buf)) {
/* Skip leading whitespace. */
for (p = buf; *p && isspace((unsigned char)*p); ++p)
continue;
/* If nothing but whitespace, continue. */
if (!*p)
continue;
#ifdef DEBUG
(void)fprintf(stderr, "line %lu: {%s}\n", (u_long)lineno, p);
#endif
/* Grab file name, "$", "set", or "unset". */
next = buf;
while ((p = strsep(&next, " \t")) != NULL && *p == '\0')
continue;
if (p == NULL)
mtree_err("missing field");
if (p[0] == '/') {
if (strcmp(p + 1, "set") == 0)
set(next, &ginfo);
else if (strcmp(p + 1, "unset") == 0)
unset(next, &ginfo);
else
mtree_err("invalid specification `%s'", p);
continue;
}
if (strcmp(p, "..") == 0) {
/* Don't go up, if haven't gone down. */
if (root == NULL)
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: mtree_err("no parent node");
}
plen = strlen(p) + 1;
if (plen > tnamelen) {
tnamelen = plen;
if ((tname = realloc(tname, tnamelen)) == NULL)
mtree_err("realloc: %s", strerror(errno));
}
if (strunvis(tname, p) == -1)
mtree_err("strunvis failed on `%s'", p);
p = tname;
pathparent = NULL;
if (strchr(p, '/') != NULL) {
cur = root;
for (; (e = strchr(p, '/')) != NULL; p = e+1) {
if (p == e)
continue; /* handle // */
*e = '\0';
if (strcmp(p, ".") != 0) {
while (cur && strcmp(cur->name, p)) {
cur = cur->next;
}
}
if (cur == NULL || cur->type != F_DIR) {
mtree_err("%s: %s", tname,
strerror(ENOENT));
}
*e = '/';
pathparent = cur;
cur = cur->child;
}
if (*p == '\0')
mtree_err("%s: empty leaf element", tname);
for (; cur != NULL; cur = cur->next) {
if (strcmp(cur->name, p) == 0)
mtree_err("%s: %s", p,
strerror(EEXIST));
}
}
if ((centry = calloc(1, sizeof(NODE) + strlen(p))) == NULL)
mtree_err("%s", strerror(errno));
*centry = ginfo;
centry->lineno = lineno;
strcpy(centry->name, p);
#define MAGIC "?*["
if (strpbrk(p, MAGIC))
centry->flags |= F_MAGIC;
set(next, centry);
if (root == NULL) {
if (strcmp(centry->name, ".") || centry->type != F_DIR)
mtree_err(
"root node must be the directory `.'");
last = root = centry;
root->parent = root;
} else if (pathparent != NULL) {
centry->parent = pathparent;
cur = pathparent->child;
if (cur == NULL)
pathparent->child = centry;
else {
while (cur->next != NULL)
cur = cur->next;
cur->next = centry;
centry->prev = cur;
}
last = centry;
} 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);
}
/*
* dump_nodes --
* dump the NODEs from `cur', based in the directory `dir'
*/
void
dump_nodes(const char *dir, NODE *root)
{
NODE *cur;
char path[MAXPATHLEN + 1];
const char *name;
for (cur = root; cur != NULL; cur = cur->next) {
if (cur->type != F_DIR && !matchtags(cur))
continue;
if (snprintf(path, sizeof(path), "%s%s%s",
dir, *dir ? "/" : "", cur->name)
>= sizeof(path))
mtree_err("Pathname too long.");
#define MATCHFLAG(f) ((keys & (f)) && (cur->flags & (f)))
if (MATCHFLAG(F_TYPE))
printf("type=%s ", nodetype(cur->type));
if (MATCHFLAG(F_UID | F_UNAME)) {
if (keys & F_UNAME &&
(name = user_from_uid(cur->st_uid, 1)) != NULL)
printf("uname=%s ", name);
else
printf("uid=%u ", cur->st_uid);
}
if (MATCHFLAG(F_GID | F_GNAME)) {
if (keys & F_GNAME &&
(name = group_from_gid(cur->st_gid, 1)) != NULL)
printf("gname=%s ", name);
else
printf("gid=%u ", cur->st_gid);
}
if (MATCHFLAG(F_MODE))
printf("mode=%#o ", cur->st_mode);
if (MATCHFLAG(F_DEV) &&
(cur->type == F_BLOCK || cur->type == F_CHAR))
printf("device=%#x ", cur->st_rdev);
if (MATCHFLAG(F_NLINK))
printf("nlink=%d ", cur->st_nlink);
if (MATCHFLAG(F_SLINK))
printf("link=%s ", cur->slink);
if (MATCHFLAG(F_SIZE))
printf("size=%lld ", (long long)cur->st_size);
if (MATCHFLAG(F_TIME))
printf("time=%ld.%ld ", (long)cur->st_mtimespec.tv_sec,
cur->st_mtimespec.tv_nsec);
if (MATCHFLAG(F_CKSUM))
printf("cksum=%lu ", cur->cksum);
if (MATCHFLAG(F_MD5))
printf("md5=%s ", cur->md5sum);
if (MATCHFLAG(F_FLAGS))
printf("flags=%s ",
flags_to_string(cur->st_flags, "none"));
if (MATCHFLAG(F_IGN))
printf("ignore ");
if (MATCHFLAG(F_OPT))
printf("optional ");
if (MATCHFLAG(F_TAGS))
printf("tags=%s ", cur->tags);
puts(path);
if (cur->child)
dump_nodes(path, cur->child);
}
}
static dev_t
parsedev(char *arg)
{
#define MAX_PACK_ARGS 3
u_long numbers[MAX_PACK_ARGS];
char *p, *ep, *dev;
int argc;
pack_t *pack;
dev_t result;
if ((dev = strchr(arg, ',')) != NULL) {
*dev++='\0';
if ((pack = pack_find(arg)) == NULL)
mtree_err("unknown format `%s'", arg);
argc = 0;
while ((p = strsep(&dev, ",")) != NULL) {
if (*p == '\0')
mtree_err("missing number");
numbers[argc++] = strtoul(p, &ep, 0);
if (*ep != '\0')
mtree_err("invalid number `%s'",
p);
if (argc > MAX_PACK_ARGS)
mtree_err("too many arguments");
}
if (argc < 2)
mtree_err("not enough arguments");
result = (*pack)(argc, numbers);
} else {
result = (dev_t)strtoul(arg, &ep, 0);
if (*ep != '\0')
mtree_err("invalid device `%s'", arg);
}
return (result);
}
static void
set(char *t, NODE *ip)
{
int type, value, len;
gid_t gid;
uid_t uid;
char *kw, *val, *md, *ep;
void *m;
val = NULL;
while ((kw = strsep(&t, "= \t")) != NULL) {
if (*kw == '\0')
continue;
if (strcmp(kw, "all") == 0)
mtree_err("invalid keyword `all'");
ip->flags |= type = parsekey(kw, &value);
if (value) {
while ((val = strsep(&t, " \t")) != NULL &&
*val == '\0')
continue;
if (val == NULL)
mtree_err("missing value");
}
switch(type) {
case F_CKSUM:
ip->cksum = strtoul(val, &ep, 10);
if (*ep)
mtree_err("invalid checksum `%s'", val);
break;
case F_DEV:
ip->st_rdev = parsedev(val);
break;
case F_FLAGS:
if (strcmp("none", val) == 0)
ip->st_flags = 0;
else if (string_to_flags(&val, &ip->st_flags, NULL)
!= 0)
mtree_err("invalid flag `%s'", val);
break;
case F_GID:
ip->st_gid = (gid_t)strtoul(val, &ep, 10);
if (*ep)
mtree_err("invalid gid `%s'", val);
break;
case F_GNAME:
if (gid_from_group(val, &gid) == -1)
mtree_err("unknown group `%s'", val);
ip->st_gid = gid;
break;
case F_IGN:
/* just set flag bit */
break;
case F_MD5:
if (val[0]=='0' && val[1]=='x')
md=&val[2];
else
md=val;
if ((ip->md5sum = strdup(md)) == NULL)
mtree_err("memory allocation error");
break;
case F_MODE:
if ((m = setmode(val)) == NULL)
mtree_err("invalid file mode `%s'", val);
ip->st_mode = getmode(m, 0);
free(m);
break;
case F_NLINK:
ip->st_nlink = (nlink_t)strtoul(val, &ep, 10);
if (*ep)
mtree_err("invalid link count `%s'", val);
break;
case F_OPT:
/* just set flag bit */
break;
case F_SIZE:
ip->st_size = (off_t)strtoq(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 = strtol(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 (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;
if (strcmp(p, "all") == 0)
mtree_err("invalid keyword `all'");
ip->flags &= ~parsekey(p, NULL);
}
}
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