NetBSD/usr.sbin/mtree/spec.c

274 lines
7.0 KiB
C

/* $NetBSD: spec.c,v 1.23 2001/07/18 04:51:54 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.
*/
#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 1.23 2001/07/18 04:51:54 lukem Exp $");
#endif
#endif /* not lint */
#include <sys/types.h>
#include <sys/stat.h>
#include <ctype.h>
#include <errno.h>
#include <fts.h>
#include <grp.h>
#include <pwd.h>
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include <vis.h>
#include "mtree.h"
#include "extern.h"
int lineno; /* Current spec line number. */
static void set(char *, NODE *);
static void unset(char *, NODE *);
NODE *
spec(void)
{
NODE *centry, *last;
char *p;
NODE ginfo, *root;
int c_cur, c_next;
char buf[2048];
root = NULL;
centry = last = NULL;
memset(&ginfo, 0, sizeof(ginfo));
c_cur = c_next = 0;
for (lineno = 1; fgets(buf, sizeof(buf), stdin);
++lineno, c_cur = c_next, c_next = 0) {
/* Skip empty lines. */
if (buf[0] == '\n')
continue;
/* Find end of line. */
if ((p = strchr(buf, '\n')) == NULL)
mtree_err("line %d too long", lineno);
/* See if next line is continuation line. */
if (p[-1] == '\\') {
--p;
c_next = 1;
}
/* Null-terminate the line. */
*p = '\0';
/* Skip leading whitespace. */
for (p = buf; *p && isspace((unsigned char)*p); ++p);
/* If nothing but whitespace or comment char, continue. */
if (!*p || *p == '#')
continue;
#ifdef DEBUG
(void)fprintf(stderr, "line %d: {%s}\n", lineno, p);
#endif
if (c_cur) {
set(p, centry);
continue;
}
/* Grab file name, "$", "set", or "unset". */
if ((p = strtok(p, "\n\t ")) == NULL)
mtree_err("missing field");
if (p[0] == '/') {
if (strcmp(p + 1, "set") == 0)
set(NULL, &ginfo);
else if (strcmp(p + 1, "unset") == 0)
unset(NULL, &ginfo);
else
mtree_err("invalid specification `%s'", p);
continue;
}
if (strchr(p, '/'))
mtree_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: mtree_err("no parent node");
}
if ((centry = calloc(1, sizeof(NODE) + strlen(p))) == NULL)
mtree_err("%s", strerror(errno));
*centry = ginfo;
if (strunvis(centry->name, p) == -1)
mtree_err("strunvis failed on `%s'", 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(char *t, NODE *ip)
{
int type;
char *kw, *val, *md;
struct group *gr;
struct passwd *pw;
void *m;
int value;
char *ep;
val = NULL;
for (; (kw = strtok(t, "= \t\n")) != NULL; t = NULL) {
ip->flags |= type = parsekey(kw, &value);
if (value && (val = strtok(NULL, " \t\n")) == 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_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 ((gr = getgrnam(val)) == NULL)
mtree_err("unknown group `%s'", val);
ip->st_gid = gr->gr_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_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_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 ((pw = getpwnam(val)) == NULL)
mtree_err("unknown user `%s'", val);
ip->st_uid = pw->pw_uid;
break;
}
}
}
static void
unset(char *t, NODE *ip)
{
char *p;
while ((p = strtok(t, "\n\t ")) != NULL)
ip->flags &= ~parsekey(p, NULL);
}