mirror of
https://git.hardenedbsd.org/hardenedbsd/HardenedBSD.git
synced 2024-11-16 15:44:04 +01:00
678 lines
14 KiB
C
678 lines
14 KiB
C
/* GNU dump extensions to tar.
|
|
Copyright (C) 1988, 1992, 1993 Free Software Foundation
|
|
|
|
This file is part of GNU Tar.
|
|
|
|
GNU Tar is free software; you can redistribute it and/or modify
|
|
it under the terms of the GNU General Public License as published by
|
|
the Free Software Foundation; either version 2, or (at your option)
|
|
any later version.
|
|
|
|
GNU Tar is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with GNU Tar; see the file COPYING. If not, write to
|
|
the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
|
|
|
|
#include <stdio.h>
|
|
#include <sys/types.h>
|
|
#include <ctype.h>
|
|
#include <errno.h>
|
|
#ifndef STDC_HEADERS
|
|
extern int errno;
|
|
#endif
|
|
#include <time.h>
|
|
time_t time ();
|
|
|
|
#include "tar.h"
|
|
#include "port.h"
|
|
|
|
#ifndef S_ISLNK
|
|
#define lstat stat
|
|
#endif
|
|
|
|
extern time_t new_time;
|
|
extern FILE *msg_file;
|
|
|
|
void addname ();
|
|
int check_exclude ();
|
|
extern PTR ck_malloc ();
|
|
extern PTR ck_realloc ();
|
|
int confirm ();
|
|
extern PTR init_buffer ();
|
|
extern char *get_buffer ();
|
|
int is_dot_or_dotdot ();
|
|
extern void add_buffer ();
|
|
extern void flush_buffer ();
|
|
void name_gather ();
|
|
int recursively_delete ();
|
|
void skip_file ();
|
|
char *un_quote_string ();
|
|
|
|
extern char *new_name ();
|
|
|
|
static void add_dir_name ();
|
|
|
|
struct dirname
|
|
{
|
|
struct dirname *next;
|
|
char *name;
|
|
char *dir_text;
|
|
int dev;
|
|
int ino;
|
|
int allnew;
|
|
};
|
|
static struct dirname *dir_list;
|
|
static time_t this_time;
|
|
|
|
void
|
|
add_dir (name, dev, ino, text)
|
|
char *name;
|
|
char *text;
|
|
dev_t dev;
|
|
ino_t ino;
|
|
{
|
|
struct dirname *dp;
|
|
|
|
dp = (struct dirname *) ck_malloc (sizeof (struct dirname));
|
|
if (!dp)
|
|
abort ();
|
|
dp->next = dir_list;
|
|
dir_list = dp;
|
|
dp->dev = dev;
|
|
dp->ino = ino;
|
|
dp->name = ck_malloc (strlen (name) + 1);
|
|
strcpy (dp->name, name);
|
|
dp->dir_text = text;
|
|
dp->allnew = 0;
|
|
}
|
|
|
|
void
|
|
read_dir_file ()
|
|
{
|
|
int dev;
|
|
int ino;
|
|
char *strp;
|
|
FILE *fp;
|
|
char buf[512];
|
|
static char *path = 0;
|
|
|
|
if (path == 0)
|
|
path = ck_malloc (PATH_MAX);
|
|
time (&this_time);
|
|
if (gnu_dumpfile[0] != '/')
|
|
{
|
|
#if defined(__MSDOS__) || defined(HAVE_GETCWD) || defined(_POSIX_VERSION)
|
|
if (!getcwd (path, PATH_MAX))
|
|
{
|
|
msg ("Couldn't get current directory.");
|
|
exit (EX_SYSTEM);
|
|
}
|
|
#else
|
|
char *getwd ();
|
|
|
|
if (!getwd (path))
|
|
{
|
|
msg ("Couldn't get current directory: %s", path);
|
|
exit (EX_SYSTEM);
|
|
}
|
|
#endif
|
|
/* If this doesn't fit, we're in serious trouble */
|
|
strcat (path, "/");
|
|
strcat (path, gnu_dumpfile);
|
|
gnu_dumpfile = path;
|
|
}
|
|
fp = fopen (gnu_dumpfile, "r");
|
|
if (fp == 0 && errno != ENOENT)
|
|
{
|
|
msg_perror ("Can't open %s", gnu_dumpfile);
|
|
return;
|
|
}
|
|
if (!fp)
|
|
return;
|
|
fgets (buf, sizeof (buf), fp);
|
|
if (!f_new_files)
|
|
{
|
|
f_new_files++;
|
|
new_time = atol (buf);
|
|
}
|
|
while (fgets (buf, sizeof (buf), fp))
|
|
{
|
|
strp = &buf[strlen (buf)];
|
|
if (strp[-1] == '\n')
|
|
strp[-1] = '\0';
|
|
strp = buf;
|
|
dev = atol (strp);
|
|
while (isdigit (*strp))
|
|
strp++;
|
|
ino = atol (strp);
|
|
while (isspace (*strp))
|
|
strp++;
|
|
while (isdigit (*strp))
|
|
strp++;
|
|
strp++;
|
|
add_dir (un_quote_string (strp), dev, ino, (char *) 0);
|
|
}
|
|
fclose (fp);
|
|
}
|
|
|
|
void
|
|
write_dir_file ()
|
|
{
|
|
FILE *fp;
|
|
struct dirname *dp;
|
|
char *str;
|
|
extern char *quote_copy_string ();
|
|
|
|
fp = fopen (gnu_dumpfile, "w");
|
|
if (fp == 0)
|
|
{
|
|
msg_perror ("Can't write to %s", gnu_dumpfile);
|
|
return;
|
|
}
|
|
fprintf (fp, "%lu\n", this_time);
|
|
for (dp = dir_list; dp; dp = dp->next)
|
|
{
|
|
if (!dp->dir_text)
|
|
continue;
|
|
str = quote_copy_string (dp->name);
|
|
if (str)
|
|
{
|
|
fprintf (fp, "%u %u %s\n", dp->dev, dp->ino, str);
|
|
free (str);
|
|
}
|
|
else
|
|
fprintf (fp, "%u %u %s\n", dp->dev, dp->ino, dp->name);
|
|
}
|
|
fclose (fp);
|
|
}
|
|
|
|
struct dirname *
|
|
get_dir (name)
|
|
char *name;
|
|
{
|
|
struct dirname *dp;
|
|
|
|
for (dp = dir_list; dp; dp = dp->next)
|
|
{
|
|
if (!strcmp (dp->name, name))
|
|
return dp;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
|
|
/* Collect all the names from argv[] (or whatever), then expand them into
|
|
a directory tree, and put all the directories at the beginning. */
|
|
void
|
|
collect_and_sort_names ()
|
|
{
|
|
struct name *n, *n_next;
|
|
int num_names;
|
|
struct stat statbuf;
|
|
int name_cmp ();
|
|
char *merge_sort ();
|
|
|
|
name_gather ();
|
|
|
|
if (gnu_dumpfile)
|
|
read_dir_file ();
|
|
if (!namelist)
|
|
addname (".");
|
|
for (n = namelist; n; n = n_next)
|
|
{
|
|
n_next = n->next;
|
|
if (n->found || n->dir_contents)
|
|
continue;
|
|
if (n->regexp) /* FIXME just skip regexps for now */
|
|
continue;
|
|
if (n->change_dir)
|
|
if (chdir (n->change_dir) < 0)
|
|
{
|
|
msg_perror ("can't chdir to %s", n->change_dir);
|
|
continue;
|
|
}
|
|
|
|
#ifdef AIX
|
|
if (statx (n->name, &statbuf, STATSIZE, STX_HIDDEN | STX_LINK))
|
|
#else
|
|
if (lstat (n->name, &statbuf) < 0)
|
|
#endif /* AIX */
|
|
{
|
|
msg_perror ("can't stat %s", n->name);
|
|
continue;
|
|
}
|
|
if (S_ISDIR (statbuf.st_mode))
|
|
{
|
|
n->found++;
|
|
add_dir_name (n->name, statbuf.st_dev);
|
|
}
|
|
}
|
|
|
|
num_names = 0;
|
|
for (n = namelist; n; n = n->next)
|
|
num_names++;
|
|
namelist = (struct name *) merge_sort ((PTR) namelist, num_names, (char *) (&(namelist->next)) - (char *) namelist, name_cmp);
|
|
|
|
for (n = namelist; n; n = n->next)
|
|
{
|
|
n->found = 0;
|
|
}
|
|
if (gnu_dumpfile)
|
|
write_dir_file ();
|
|
}
|
|
|
|
int
|
|
name_cmp (n1, n2)
|
|
struct name *n1, *n2;
|
|
{
|
|
if (n1->found)
|
|
{
|
|
if (n2->found)
|
|
return strcmp (n1->name, n2->name);
|
|
else
|
|
return -1;
|
|
}
|
|
else if (n2->found)
|
|
return 1;
|
|
else
|
|
return strcmp (n1->name, n2->name);
|
|
}
|
|
|
|
int
|
|
dirent_cmp (p1, p2)
|
|
const PTR p1;
|
|
const PTR p2;
|
|
{
|
|
char *frst, *scnd;
|
|
|
|
frst = (*(char **) p1) + 1;
|
|
scnd = (*(char **) p2) + 1;
|
|
|
|
return strcmp (frst, scnd);
|
|
}
|
|
|
|
char *
|
|
get_dir_contents (p, device)
|
|
char *p;
|
|
int device;
|
|
{
|
|
DIR *dirp;
|
|
register struct dirent *d;
|
|
char *new_buf;
|
|
char *namebuf;
|
|
int bufsiz;
|
|
int len;
|
|
PTR the_buffer;
|
|
char *buf;
|
|
size_t n_strs;
|
|
/* int n_size;*/
|
|
char *p_buf;
|
|
char **vec, **p_vec;
|
|
|
|
extern int errno;
|
|
|
|
errno = 0;
|
|
dirp = opendir (p);
|
|
bufsiz = strlen (p) + NAMSIZ;
|
|
namebuf = ck_malloc (bufsiz + 2);
|
|
if (!dirp)
|
|
{
|
|
if (errno)
|
|
msg_perror ("can't open directory %s", p);
|
|
else
|
|
msg ("error opening directory %s", p);
|
|
new_buf = NULL;
|
|
}
|
|
else
|
|
{
|
|
struct dirname *dp;
|
|
int all_children;
|
|
|
|
dp = get_dir (p);
|
|
all_children = dp ? dp->allnew : 0;
|
|
(void) strcpy (namebuf, p);
|
|
if (p[strlen (p) - 1] != '/')
|
|
(void) strcat (namebuf, "/");
|
|
len = strlen (namebuf);
|
|
|
|
the_buffer = init_buffer ();
|
|
while (d = readdir (dirp))
|
|
{
|
|
struct stat hs;
|
|
|
|
/* Skip . and .. */
|
|
if (is_dot_or_dotdot (d->d_name))
|
|
continue;
|
|
if (NLENGTH (d) + len >= bufsiz)
|
|
{
|
|
bufsiz += NAMSIZ;
|
|
namebuf = ck_realloc (namebuf, bufsiz + 2);
|
|
}
|
|
(void) strcpy (namebuf + len, d->d_name);
|
|
#ifdef AIX
|
|
if (0 != f_follow_links ?
|
|
statx (namebuf, &hs, STATSIZE, STX_HIDDEN) :
|
|
statx (namebuf, &hs, STATSIZE, STX_HIDDEN | STX_LINK))
|
|
#else
|
|
if (0 != f_follow_links ? stat (namebuf, &hs) : lstat (namebuf, &hs))
|
|
#endif
|
|
{
|
|
msg_perror ("can't stat %s", namebuf);
|
|
continue;
|
|
}
|
|
if ((f_local_filesys && device != hs.st_dev)
|
|
|| (f_exclude && check_exclude (namebuf)))
|
|
add_buffer (the_buffer, "N", 1);
|
|
#ifdef AIX
|
|
else if (S_ISHIDDEN (hs.st_mode))
|
|
{
|
|
add_buffer (the_buffer, "D", 1);
|
|
strcat (d->d_name, "A");
|
|
d->d_namlen++;
|
|
}
|
|
#endif /* AIX */
|
|
else if (S_ISDIR (hs.st_mode))
|
|
{
|
|
if (dp = get_dir (namebuf))
|
|
{
|
|
if (dp->dev != hs.st_dev
|
|
|| dp->ino != hs.st_ino)
|
|
{
|
|
if (f_verbose)
|
|
msg ("directory %s has been renamed.", namebuf);
|
|
dp->allnew = 1;
|
|
dp->dev = hs.st_dev;
|
|
dp->ino = hs.st_ino;
|
|
}
|
|
dp->dir_text = "";
|
|
}
|
|
else
|
|
{
|
|
if (f_verbose)
|
|
msg ("Directory %s is new", namebuf);
|
|
add_dir (namebuf, hs.st_dev, hs.st_ino, "");
|
|
dp = get_dir (namebuf);
|
|
dp->allnew = 1;
|
|
}
|
|
if (all_children)
|
|
dp->allnew = 1;
|
|
|
|
add_buffer (the_buffer, "D", 1);
|
|
}
|
|
else if (!all_children
|
|
&& f_new_files
|
|
&& new_time > hs.st_mtime
|
|
&& (f_new_files > 1
|
|
|| new_time > hs.st_ctime))
|
|
add_buffer (the_buffer, "N", 1);
|
|
else
|
|
add_buffer (the_buffer, "Y", 1);
|
|
add_buffer (the_buffer, d->d_name, (int) (NLENGTH (d) + 1));
|
|
}
|
|
add_buffer (the_buffer, "\000\000", 2);
|
|
closedir (dirp);
|
|
|
|
/* Well, we've read in the contents of the dir, now sort them */
|
|
buf = get_buffer (the_buffer);
|
|
if (buf[0] == '\0')
|
|
{
|
|
flush_buffer (the_buffer);
|
|
new_buf = NULL;
|
|
}
|
|
else
|
|
{
|
|
n_strs = 0;
|
|
for (p_buf = buf; *p_buf;)
|
|
{
|
|
int tmp;
|
|
|
|
tmp = strlen (p_buf) + 1;
|
|
n_strs++;
|
|
p_buf += tmp;
|
|
}
|
|
vec = (char **) ck_malloc (sizeof (char *) * (n_strs + 1));
|
|
for (p_vec = vec, p_buf = buf; *p_buf; p_buf += strlen (p_buf) + 1)
|
|
*p_vec++ = p_buf;
|
|
*p_vec = 0;
|
|
qsort ((PTR) vec, n_strs, sizeof (char *), dirent_cmp);
|
|
new_buf = (char *) ck_malloc (p_buf - buf + 2);
|
|
for (p_vec = vec, p_buf = new_buf; *p_vec; p_vec++)
|
|
{
|
|
char *p_tmp;
|
|
|
|
for (p_tmp = *p_vec; *p_buf++ = *p_tmp++;)
|
|
;
|
|
}
|
|
*p_buf++ = '\0';
|
|
free (vec);
|
|
flush_buffer (the_buffer);
|
|
}
|
|
}
|
|
free (namebuf);
|
|
return new_buf;
|
|
}
|
|
|
|
/* p is a directory. Add all the files in P to the namelist. If any of the
|
|
files is a directory, recurse on the subdirectory. . . */
|
|
static void
|
|
add_dir_name (p, device)
|
|
char *p;
|
|
int device;
|
|
{
|
|
char *new_buf;
|
|
char *p_buf;
|
|
|
|
char *namebuf;
|
|
int buflen;
|
|
register int len;
|
|
int sublen;
|
|
|
|
/* PTR the_buffer;*/
|
|
|
|
/* char *buf;*/
|
|
/* char **vec,**p_vec;*/
|
|
/* int n_strs,n_size;*/
|
|
|
|
struct name *n;
|
|
|
|
int dirent_cmp ();
|
|
|
|
new_buf = get_dir_contents (p, device);
|
|
|
|
for (n = namelist; n; n = n->next)
|
|
{
|
|
if (!strcmp (n->name, p))
|
|
{
|
|
n->dir_contents = new_buf ? new_buf : "\0\0\0\0";
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (new_buf)
|
|
{
|
|
len = strlen (p);
|
|
buflen = NAMSIZ <= len ? len + NAMSIZ : NAMSIZ;
|
|
namebuf = ck_malloc (buflen + 1);
|
|
|
|
(void) strcpy (namebuf, p);
|
|
if (namebuf[len - 1] != '/')
|
|
{
|
|
namebuf[len++] = '/';
|
|
namebuf[len] = '\0';
|
|
}
|
|
for (p_buf = new_buf; *p_buf; p_buf += sublen + 1)
|
|
{
|
|
sublen = strlen (p_buf);
|
|
if (*p_buf == 'D')
|
|
{
|
|
if (len + sublen >= buflen)
|
|
{
|
|
buflen += NAMSIZ;
|
|
namebuf = ck_realloc (namebuf, buflen + 1);
|
|
}
|
|
(void) strcpy (namebuf + len, p_buf + 1);
|
|
addname (namebuf);
|
|
add_dir_name (namebuf, device);
|
|
}
|
|
}
|
|
free (namebuf);
|
|
}
|
|
}
|
|
|
|
/* Returns non-zero if p is . or .. This could be a macro for speed. */
|
|
int
|
|
is_dot_or_dotdot (p)
|
|
char *p;
|
|
{
|
|
return (p[0] == '.' && (p[1] == '\0' || (p[1] == '.' && p[2] == '\0')));
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
void
|
|
gnu_restore (skipcrud)
|
|
int skipcrud;
|
|
{
|
|
char *current_dir;
|
|
/* int current_dir_length; */
|
|
|
|
char *archive_dir;
|
|
/* int archive_dir_length; */
|
|
PTR the_buffer;
|
|
char *p;
|
|
DIR *dirp;
|
|
struct dirent *d;
|
|
char *cur, *arc;
|
|
extern struct stat hstat; /* Stat struct corresponding */
|
|
long size, copied;
|
|
char *from, *to;
|
|
extern union record *head;
|
|
|
|
dirp = opendir (skipcrud + current_file_name);
|
|
|
|
if (!dirp)
|
|
{
|
|
/* The directory doesn't exist now. It'll be created.
|
|
In any case, we don't have to delete any files out
|
|
of it */
|
|
skip_file ((long) hstat.st_size);
|
|
return;
|
|
}
|
|
|
|
the_buffer = init_buffer ();
|
|
while (d = readdir (dirp))
|
|
{
|
|
if (is_dot_or_dotdot (d->d_name))
|
|
continue;
|
|
|
|
add_buffer (the_buffer, d->d_name, (int) (NLENGTH (d) + 1));
|
|
}
|
|
closedir (dirp);
|
|
add_buffer (the_buffer, "", 1);
|
|
|
|
current_dir = get_buffer (the_buffer);
|
|
archive_dir = (char *) ck_malloc (hstat.st_size);
|
|
if (archive_dir == 0)
|
|
{
|
|
msg ("Can't allocate %d bytes for restore", hstat.st_size);
|
|
skip_file ((long) hstat.st_size);
|
|
return;
|
|
}
|
|
to = archive_dir;
|
|
for (size = hstat.st_size; size > 0; size -= copied)
|
|
{
|
|
from = findrec ()->charptr;
|
|
if (!from)
|
|
{
|
|
msg ("Unexpected EOF in archive\n");
|
|
break;
|
|
}
|
|
copied = endofrecs ()->charptr - from;
|
|
if (copied > size)
|
|
copied = size;
|
|
bcopy ((PTR) from, (PTR) to, (int) copied);
|
|
to += copied;
|
|
userec ((union record *) (from + copied - 1));
|
|
}
|
|
|
|
for (cur = current_dir; *cur; cur += strlen (cur) + 1)
|
|
{
|
|
for (arc = archive_dir; *arc; arc += strlen (arc) + 1)
|
|
{
|
|
arc++;
|
|
if (!strcmp (arc, cur))
|
|
break;
|
|
}
|
|
if (*arc == '\0')
|
|
{
|
|
p = new_name (skipcrud + current_file_name, cur);
|
|
if (f_confirm && !confirm ("delete", p))
|
|
{
|
|
free (p);
|
|
continue;
|
|
}
|
|
if (f_verbose)
|
|
fprintf (msg_file, "%s: deleting %s\n", tar, p);
|
|
if (recursively_delete (p))
|
|
{
|
|
msg ("%s: Error while deleting %s\n", tar, p);
|
|
}
|
|
free (p);
|
|
}
|
|
|
|
}
|
|
flush_buffer (the_buffer);
|
|
free (archive_dir);
|
|
}
|
|
|
|
int
|
|
recursively_delete (path)
|
|
char *path;
|
|
{
|
|
struct stat sbuf;
|
|
DIR *dirp;
|
|
struct dirent *dp;
|
|
char *path_buf;
|
|
/* int path_len; */
|
|
|
|
|
|
if (lstat (path, &sbuf) < 0)
|
|
return 1;
|
|
if (S_ISDIR (sbuf.st_mode))
|
|
{
|
|
|
|
/* path_len=strlen(path); */
|
|
dirp = opendir (path);
|
|
if (dirp == 0)
|
|
return 1;
|
|
while (dp = readdir (dirp))
|
|
{
|
|
if (is_dot_or_dotdot (dp->d_name))
|
|
continue;
|
|
path_buf = new_name (path, dp->d_name);
|
|
if (recursively_delete (path_buf))
|
|
{
|
|
free (path_buf);
|
|
closedir (dirp);
|
|
return 1;
|
|
}
|
|
free (path_buf);
|
|
}
|
|
closedir (dirp);
|
|
|
|
if (rmdir (path) < 0)
|
|
return 1;
|
|
return 0;
|
|
}
|
|
if (unlink (path) < 0)
|
|
return 1;
|
|
return 0;
|
|
}
|