NetBSD/usr.sbin/mtree/spec.c

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/* $NetBSD: spec.c,v 1.7 1996/02/01 00:04:57 jtc Exp $ */
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/*-
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* Copyright (c) 1989, 1993
* The Regents of the University of California. All rights reserved.
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*
* 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
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#if 0
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static char sccsid[] = "@(#)spec.c 8.1 (Berkeley) 6/6/93";
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#else
static char rcsid[] = "$NetBSD: spec.c,v 1.7 1996/02/01 00:04:57 jtc Exp $";
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#endif
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#endif /* not lint */
#include <sys/types.h>
#include <sys/stat.h>
#include <fts.h>
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#include <pwd.h>
#include <grp.h>
#include <errno.h>
#include <unistd.h>
#include <stdio.h>
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#include <ctype.h>
#include "mtree.h"
#include "extern.h"
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int lineno; /* Current spec line number. */
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static void set __P((char *, NODE *));
static void unset __P((char *, NODE *));
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NODE *
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spec()
{
register NODE *centry, *last;
register char *p;
NODE ginfo, *root;
int c_cur, c_next;
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char buf[2048];
root = NULL;
bzero(&ginfo, sizeof(ginfo));
c_cur = c_next = 0;
for (lineno = 1; fgets(buf, sizeof(buf), stdin);
++lineno, c_cur = c_next, c_next = 0) {
/* Skip empty lines. */
if (buf[0] == '\n')
continue;
/* Find end of line. */
if ((p = index(buf, '\n')) == NULL)
err("line %d too long", lineno);
/* See if next line is continuation line. */
if (p[-1] == '\\') {
--p;
c_next = 1;
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}
/* Null-terminate the line. */
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*p = '\0';
/* Skip leading whitespace. */
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for (p = buf; *p && isspace(*p); ++p);
/* If nothing but whitespace or comment char, continue. */
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if (!*p || *p == '#')
continue;
#ifdef DEBUG
(void)fprintf(stderr, "line %d: {%s}\n", lineno, p);
#endif
if (c_cur) {
set(p, centry);
continue;
}
/* Grab file name, "$", "set", or "unset". */
if ((p = strtok(p, "\n\t ")) == NULL)
err("missing field");
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if (p[0] == '/')
switch(p[1]) {
case 's':
if (strcmp(p + 1, "set"))
break;
set(NULL, &ginfo);
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continue;
case 'u':
if (strcmp(p + 1, "unset"))
break;
unset(NULL, &ginfo);
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continue;
}
if (index(p, '/'))
err("slash character in file name");
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if (!strcmp(p, "..")) {
/* Don't go up, if haven't gone down. */
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if (!root)
goto noparent;
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if (last->type != F_DIR || last->flags & F_DONE) {
if (last == root)
goto noparent;
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last = last->parent;
}
last->flags |= F_DONE;
continue;
noparent: err("no parent node");
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}
if ((centry = calloc(1, sizeof(NODE) + strlen(p))) == NULL)
err("%s", strerror(errno));
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*centry = ginfo;
(void)strcpy(centry->name, p);
#define MAGIC "?*["
if (strpbrk(p, MAGIC))
centry->flags |= F_MAGIC;
set(NULL, centry);
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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);
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}
static void
set(t, ip)
char *t;
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register NODE *ip;
{
register int type;
register char *kw, *val;
struct group *gr;
struct passwd *pw;
mode_t *m;
int value;
char *ep;
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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");
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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);
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break;
case F_GNAME:
if ((gr = getgrnam(val)) == NULL)
err("unknown group %s", val);
ip->st_gid = gr->gr_gid;
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break;
case F_IGN:
/* just set flag bit */
break;
case F_MODE:
if ((m = setmode(val)) == NULL)
err("invalid file mode %s", val);
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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);
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break;
case F_SIZE:
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ip->st_size = strtouq(val, &ep, 10);
if (*ep)
err("invalid size %s", val);
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break;
case F_SLINK:
if ((ip->slink = strdup(val)) == NULL)
err("%s", strerror(errno));
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break;
case F_TIME:
ip->st_mtimespec.tv_sec = strtoul(val, &ep, 10);
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if (*ep != '.')
err("invalid time %s", val);
val = ep + 1;
ip->st_mtimespec.tv_nsec = strtoul(val, &ep, 10);
if (*ep)
err("invalid time %s", val);
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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);
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}
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;
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}
}
}
static void
unset(t, ip)
char *t;
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register NODE *ip;
{
register char *p;
while (p = strtok(t, "\n\t "))
ip->flags &= ~parsekey(p, NULL);
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}