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Remove files made obsolete by new unarchiving code

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This commit is contained in:
Glenn L McGrath 2002-09-25 03:04:03 +00:00
parent 7ca04f328e
commit 69eab26401
4 changed files with 0 additions and 655 deletions
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84
archival/libunarchive/deb_extract.c
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@ -1,84 +0,0 @@
/*
* This program 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 of the License, or
* (at your option) any later version.
*
* This program 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 Library General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "unarchive.h"
#include "libbb.h"
char *deb_extract(const char *package_filename, FILE *out_stream,
const int extract_function, const char *prefix, const char *filename)
{
FILE *deb_stream;
FILE *uncompressed_stream = NULL;
file_header_t *ar_header = NULL;
char **file_list = NULL;
char *output_buffer = NULL;
char *ared_file = NULL;
char ar_magic[8];
int gunzip_pid;
if (filename != NULL) {
file_list = xmalloc(sizeof(char *) * 2);
file_list[0] = xstrdup(filename);
file_list[1] = NULL;
}
if (extract_function & extract_control_tar_gz) {
ared_file = xstrdup("control.tar.gz");
}
else if (extract_function & extract_data_tar_gz) {
ared_file = xstrdup("data.tar.gz");
}
/* open the debian package to be worked on */
deb_stream = wfopen(package_filename, "r");
if (deb_stream == NULL) {
return(NULL);
}
/* set the buffer size */
setvbuf(deb_stream, NULL, _IOFBF, 0x8000);
/* check ar magic */
fread(ar_magic, 1, 8, deb_stream);
if (strncmp(ar_magic,"!<arch>",7) != 0) {
error_msg_and_die("invalid magic");
}
archive_offset = 8;
while ((ar_header = get_header_ar(deb_stream)) != NULL) {
if (strcmp(ared_file, ar_header->name) == 0) {
/* open a stream of decompressed data */
uncompressed_stream = gz_open(deb_stream, &gunzip_pid);
archive_offset = 0;
output_buffer = unarchive(uncompressed_stream, out_stream, get_header_tar, extract_function, prefix, file_list, NULL);
}
seek_sub_file(deb_stream, ar_header->size);
free(ar_header->name);
free(ar_header);
}
gz_close(gunzip_pid);
fclose(deb_stream);
fclose(uncompressed_stream);
free(ared_file);
if (filename != NULL) {
free(file_list[0]);
free(file_list);
}
return(output_buffer);
}

137
archival/libunarchive/get_header_cpio.c
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@ -1,137 +0,0 @@
/*
* This program 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 of the License, or
* (at your option) any later version.
*
* This program 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 Library General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "unarchive.h"
#include "libbb.h"
struct hardlinks {
file_header_t *entry;
int inode;
struct hardlinks *next;
};
file_header_t *get_header_cpio(FILE *src_stream)
{
file_header_t *cpio_entry = NULL;
char cpio_header[110];
int namesize;
char dummy[16];
int major, minor, nlink, inode;
static struct hardlinks *saved_hardlinks = NULL;
static int pending_hardlinks = 0;
if (pending_hardlinks) { /* Deal with any pending hardlinks */
struct hardlinks *tmp = saved_hardlinks, *oldtmp = NULL;
while (tmp) {
if (tmp->entry->link_name) { /* Found a hardlink ready to be extracted */
cpio_entry = tmp->entry;
if (oldtmp) oldtmp->next = tmp->next; /* Remove item from linked list */
else saved_hardlinks = tmp->next;
free(tmp);
return (cpio_entry);
}
oldtmp = tmp;
tmp = tmp->next;
}
pending_hardlinks = 0; /* No more pending hardlinks, read next file entry */
}
/* There can be padding before archive header */
seek_sub_file(src_stream, (4 - (archive_offset % 4)) % 4);
if (fread(cpio_header, 1, 110, src_stream) == 110) {
archive_offset += 110;
if (strncmp(cpio_header, "07070", 5) != 0) {
error_msg("Unsupported format or invalid magic");
return(NULL);
}
switch (cpio_header[5]) {
case '2': /* "crc" header format */
/* Doesnt do the crc check yet */
case '1': /* "newc" header format */
cpio_entry = (file_header_t *) xcalloc(1, sizeof(file_header_t));
sscanf(cpio_header, "%6c%8x%8x%8x%8x%8x%8lx%8lx%16c%8x%8x%8x%8c",
dummy, &inode, (unsigned int*)&cpio_entry->mode,
(unsigned int*)&cpio_entry->uid, (unsigned int*)&cpio_entry->gid,
&nlink, &cpio_entry->mtime, &cpio_entry->size,
dummy, &major, &minor, &namesize, dummy);
cpio_entry->name = (char *) xcalloc(1, namesize);
fread(cpio_entry->name, 1, namesize, src_stream); /* Read in filename */
archive_offset += namesize;
/* Skip padding before file contents */
seek_sub_file(src_stream, (4 - (archive_offset % 4)) % 4);
if (strcmp(cpio_entry->name, "TRAILER!!!") == 0) {
printf("%d blocks\n", (int) (archive_offset % 512 ? (archive_offset / 512) + 1 : archive_offset / 512)); /* Always round up */
if (saved_hardlinks) { /* Bummer - we still have unresolved hardlinks */
struct hardlinks *tmp = saved_hardlinks, *oldtmp = NULL;
while (tmp) {
error_msg("%s not created: cannot resolve hardlink", tmp->entry->name);
oldtmp = tmp;
tmp = tmp->next;
free (oldtmp->entry->name);
free (oldtmp->entry);
free (oldtmp);
}
saved_hardlinks = NULL;
pending_hardlinks = 0;
}
return(NULL);
}
if (S_ISLNK(cpio_entry->mode)) {
cpio_entry->link_name = (char *) xcalloc(1, cpio_entry->size + 1);
fread(cpio_entry->link_name, 1, cpio_entry->size, src_stream);
archive_offset += cpio_entry->size;
cpio_entry->size = 0; /* Stop possiable seeks in future */
}
if (nlink > 1 && !S_ISDIR(cpio_entry->mode)) {
if (cpio_entry->size == 0) { /* Put file on a linked list for later */
struct hardlinks *new = xmalloc(sizeof(struct hardlinks));
new->next = saved_hardlinks;
new->inode = inode;
new->entry = cpio_entry;
saved_hardlinks = new;
return(get_header_cpio(src_stream)); /* Recurse to next file */
} else { /* Found the file with data in */
struct hardlinks *tmp = saved_hardlinks;
pending_hardlinks = 1;
while (tmp) {
if (tmp->inode == inode) {
tmp->entry->link_name = xstrdup(cpio_entry->name);
nlink--;
}
tmp = tmp->next;
}
if (nlink > 1) error_msg("error resolving hardlink: did you create the archive with GNU cpio 2.0-2.2?");
}
}
cpio_entry->device = (major << 8) | minor;
break;
default:
error_msg("Unsupported format");
return(NULL);
}
if (ferror(src_stream) || feof(src_stream)) {
perror_msg("Stream error");
return(NULL);
}
}
return(cpio_entry);
}

171
archival/libunarchive/get_header_zip.c
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@ -1,171 +0,0 @@
/* vi: set sw=4 ts=4: */
/*
* get_header_zip for busybox
*
* Copyright (C) 2001 by Laurence Anderson
*
* This program 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 of the License, or
* (at your option) any later version.
*
* This program 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 this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <stddef.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "unarchive.h"
#include "libbb.h"
#define ZIP_FILEHEADER_MAGIC 0x04034b50
#define ZIP_CDS_MAGIC 0x02014b50
#define ZIP_CDS_END_MAGIC 0x06054b50
#define ZIP_DD_MAGIC 0x08074b50
enum {
zh_version,
zh_flags,
zh_method,
zh_modtime,
zh_moddate,
zh_crc32,
zh_cmpsize,
zh_ucmpsize,
zh_filename_len,
zh_extra_len
};
static const char fail_msg[] = "Invalid file or read error";
static int le_read_int(FILE *fp, int n)
{
int r = 0;
int s = 1;
int c;
archive_offset += n;
do {
if ((c = fgetc(fp)) == EOF) {
error_msg_and_die(fail_msg);
}
r += s * c;
s <<= 8;
} while (--n);
return r;
}
static void read_header(FILE *fp, int *zh)
{
static const char s[] = { 2, 2, 2, 2, 2, 4, 4, 4, 2, 2, 0 };
int i = 0;
do {
zh[i] = le_read_int(fp, s[i]);
} while (s[++i]);
}
file_header_t *get_header_zip(FILE *zip_stream)
{
int zip_header[10];
file_header_t *zip_entry = NULL;
int magic, tmpmagic;
/* If dd_ahead is true, we didn't know the last extracted file's length. */
static int dd_ahead = 0;
magic = le_read_int(zip_stream, 4);
checkmagic:
switch (magic) {
case ZIP_FILEHEADER_MAGIC:
zip_entry = xcalloc(1, sizeof(file_header_t));
read_header(zip_stream, zip_header);
if (zip_header[zh_method] == 8) {
zip_entry->extract_func = &inflate;
} else if (zip_header[zh_method] != 0) {
error_msg_and_die("Unsupported compression method %d\n",
zip_header[zh_method]);
}
zip_entry->name = xmalloc(zip_header[zh_filename_len] + 1);
if (!fread(zip_entry->name, zip_header[zh_filename_len], 1, zip_stream)) {
error_msg_and_die(fail_msg);
}
archive_offset += zip_header[zh_filename_len];
seek_sub_file(zip_stream, zip_header[zh_extra_len]);
zip_entry->size = zip_header[zh_cmpsize];
zip_entry->mode = S_IFREG | 0777;
/* Time/Date? */
zip_entry->name[zip_header[zh_filename_len]] = 0;
if (*(zip_entry->name + zip_header[zh_filename_len] - 1) == '/') {
/* Files that end in a / are directories */
/* Remove trailing / so unarchive doesn't get confused */
*(zip_entry->name + zip_header[zh_filename_len] - 1) = '\0';
zip_entry->mode ^= S_IFREG;
zip_entry->mode |= S_IFDIR;
}
if (zip_header[zh_flags] & 0x8) {
/* crc32, and sizes are in the data description _after_ the file */
if (zip_header[zh_cmpsize] == 0) {
/* As we don't know how long this file it is difficult to skip!
* but it is compressed, so normally its ok */
dd_ahead = 1;
}
if (zip_header[zh_ucmpsize] != 0) {
/* Humm... we would otherwise skip this twice - not good! */
dd_ahead = 2;
}
}
break;
case ZIP_CDS_MAGIC: /* FALLTHRU */
case ZIP_CDS_END_MAGIC:
return(NULL);
break;
case ZIP_DD_MAGIC: {
int cmpsize;
seek_sub_file(zip_stream, 4); // Skip crc32
cmpsize = le_read_int(zip_stream, 4);
if (dd_ahead == 1) archive_offset += cmpsize;
seek_sub_file(zip_stream, 4); // Skip uncompressed size
dd_ahead = 0;
return (get_header_zip(zip_stream));
break; }
default:
if (!dd_ahead) error_msg("Invalid magic (%#x): Trying to skip junk", magic);
dd_ahead = 0;
while ((tmpmagic = fgetc(zip_stream)) != EOF) {
archive_offset++;
magic = ((magic >> 8) & 0x00ffffff) | ((tmpmagic << 24) & 0xff000000);
if (magic == ZIP_FILEHEADER_MAGIC
|| magic == ZIP_CDS_MAGIC
|| magic == ZIP_CDS_END_MAGIC) {
goto checkmagic;
}
}
error_msg_and_die(fail_msg);
}
return(zip_entry);
}

263
archival/libunarchive/unarchive.c
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@ -1,263 +0,0 @@
/*
* This program 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 of the License, or
* (at your option) any later version.
*
* This program 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 Library General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#include <errno.h>
#include <fnmatch.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <utime.h>
#include <sys/wait.h>
#include <signal.h>
#include "unarchive.h"
#include "busybox.h"
/* Extract the data postioned at src_stream to either filesystem, stdout or
* buffer depending on the value of 'function' which is defined in libbb.h
*
* prefix doesnt have to be just a directory, it may prefix the filename as well.
*
* e.g. '/var/lib/dpkg/info/dpkg.' will extract all files to the base bath
* '/var/lib/dpkg/info/' and all files/dirs created in that dir will have
* 'dpkg.' as their prefix
*
* For this reason if prefix does point to a dir then it must end with a
* trailing '/' or else the last dir will be assumed to be the file prefix
*/
char *extract_archive(FILE *src_stream, FILE *out_stream, const file_header_t *file_entry,
const int function, const char *prefix)
{
FILE *dst_stream = NULL;
char *full_name = NULL;
char *buffer = NULL;
struct utimbuf t;
/* prefix doesnt have to be a proper path it may prepend
* the filename as well */
if (prefix != NULL) {
/* strip leading '/' in filename to extract as prefix may not be dir */
/* Cant use concat_path_file here as prefix might not be a directory */
char *path = file_entry->name;
if (strncmp("./", path, 2) == 0) {
path += 2;
if (strlen(path) == 0) {
return(NULL);
}
}
bb_asprintf(&full_name, "%s%s", prefix, path);
} else {
full_name = file_entry->name;
}
if (function & extract_to_stdout) {
if (S_ISREG(file_entry->mode)) {
copy_file_chunk(src_stream, out_stream, file_entry->size);
archive_offset += file_entry->size;
}
}
else if (function & extract_one_to_buffer) {
if (S_ISREG(file_entry->mode)) {
buffer = (char *) xmalloc(file_entry->size + 1);
fread(buffer, 1, file_entry->size, src_stream);
buffer[file_entry->size] = '\0';
archive_offset += file_entry->size;
return(buffer);
}
}
else if (function & extract_all_to_fs) {
struct stat oldfile;
int stat_res;
stat_res = lstat (full_name, &oldfile);
if (stat_res == 0) { /* The file already exists */
if ((function & extract_unconditional) || (oldfile.st_mtime < file_entry->mtime)) {
if (!S_ISDIR(oldfile.st_mode)) {
unlink(full_name); /* Directories might not be empty etc */
}
} else {
if ((function & extract_quiet) != extract_quiet) {
error_msg("%s not created: newer or same age file exists", file_entry->name);
}
seek_sub_file(src_stream, file_entry->size);
return (NULL);
}
}
if (function & extract_create_leading_dirs) { /* Create leading directories with default umask */
char *buf, *parent;
buf = xstrdup(full_name);
parent = dirname(buf);
if (make_directory (parent, -1, FILEUTILS_RECUR) != 0) {
if ((function & extract_quiet) != extract_quiet) {
error_msg("couldn't create leading directories");
}
}
free (buf);
}
switch(file_entry->mode & S_IFMT) {
case S_IFREG:
if (file_entry->link_name) { /* Found a cpio hard link */
if (link(file_entry->link_name, full_name) != 0) {
if ((function & extract_quiet) != extract_quiet) {
perror_msg("Cannot link from %s to '%s'",
file_entry->name, file_entry->link_name);
}
}
} else {
if ((dst_stream = wfopen(full_name, "w")) == NULL) {
seek_sub_file(src_stream, file_entry->size);
return NULL;
}
archive_offset += file_entry->size;
if (file_entry->extract_func) file_entry->extract_func(src_stream, dst_stream);
else copy_file_chunk(src_stream, dst_stream, file_entry->size);
fclose(dst_stream);
}
break;
case S_IFDIR:
if (stat_res != 0) {
if (mkdir(full_name, file_entry->mode) < 0) {
if ((function & extract_quiet) != extract_quiet) {
perror_msg("extract_archive: %s", full_name);
}
}
}
break;
case S_IFLNK:
if (symlink(file_entry->link_name, full_name) < 0) {
if ((function & extract_quiet) != extract_quiet) {
perror_msg("Cannot create symlink from %s to '%s'", file_entry->name, file_entry->link_name);
}
return NULL;
}
break;
case S_IFSOCK:
case S_IFBLK:
case S_IFCHR:
case S_IFIFO:
if (mknod(full_name, file_entry->mode, file_entry->device) == -1) {
if ((function & extract_quiet) != extract_quiet) {
perror_msg("Cannot create node %s", file_entry->name);
}
return NULL;
}
break;
}
/* Changing a symlink's properties normally changes the properties of the
* file pointed to, so dont try and change the date or mode, lchown does
* does the right thing, but isnt available in older versions of libc */
if (S_ISLNK(file_entry->mode)) {
#if (__GLIBC__ > 2) && (__GLIBC_MINOR__ > 1)
lchown(full_name, file_entry->uid, file_entry->gid);
#endif
} else {
if (function & extract_preserve_date) {
t.actime = file_entry->mtime;
t.modtime = file_entry->mtime;
utime(full_name, &t);
}
chmod(full_name, file_entry->mode);
chown(full_name, file_entry->uid, file_entry->gid);
}
} else {
/* If we arent extracting data we have to skip it,
* if data size is 0 then then just do it anyway
* (saves testing for it) */
seek_sub_file(src_stream, file_entry->size);
}
/* extract_list and extract_verbose_list can be used in conjunction
* with one of the above four extraction functions, so do this seperately */
if (function & extract_verbose_list) {
fprintf(out_stream, "%s %d/%d %8d %s ", mode_string(file_entry->mode),
file_entry->uid, file_entry->gid,
(int) file_entry->size, time_string(file_entry->mtime));
}
if ((function & extract_list) || (function & extract_verbose_list)){
/* fputs doesnt add a trailing \n, so use fprintf */
fprintf(out_stream, "%s\n", full_name);
}
if (prefix != NULL) {
free(full_name);
}
return(NULL); /* Maybe we should say if failed */
}
char *unarchive(FILE *src_stream, FILE *out_stream, file_header_t *(*get_headers)(FILE *),
const int extract_function, const char *prefix, char **include_name, char **exclude_name)
{
file_header_t *file_entry;
int extract_flag = TRUE;
int i;
char *buffer = NULL;
#ifdef CONFIG_FEATURE_UNARCHIVE_TAPE
int pid, tape_pipe[2];
if (pipe(tape_pipe) != 0) error_msg_and_die("Can't create pipe\n");
if ((pid = fork()) == -1) error_msg_and_die("Fork failed\n");
if (pid==0) { /* child process */
close(tape_pipe[0]); /* We don't wan't to read from the pipe */
copyfd(fileno(src_stream), tape_pipe[1]);
close(tape_pipe[1]); /* Send EOF */
exit(0);
/* notreached */
}
close(tape_pipe[1]); /* Don't want to write down the pipe */
fclose(src_stream);
src_stream = fdopen(tape_pipe[0], "r");
#endif
archive_offset = 0;
while ((file_entry = get_headers(src_stream)) != NULL) {
if (include_name != NULL) {
extract_flag = FALSE;
for(i = 0; include_name[i] != 0; i++) {
if (fnmatch(include_name[i], file_entry->name, FNM_LEADING_DIR) == 0) {
extract_flag = TRUE;
break;
}
}
} else {
extract_flag = TRUE;
}
/* If the file entry is in the exclude list dont extract it */
if (exclude_name != NULL) {
for(i = 0; exclude_name[i] != 0; i++) {
if (fnmatch(exclude_name[i], file_entry->name, FNM_LEADING_DIR) == 0) {
extract_flag = FALSE;
break;
}
}
}
if (extract_flag) {
buffer = extract_archive(src_stream, out_stream, file_entry, extract_function, prefix);
} else {
/* seek past the data entry */
seek_sub_file(src_stream, file_entry->size);
}
free(file_entry->name);
free(file_entry->link_name);
free(file_entry);
}
#ifdef CONFIG_FEATURE_UNARCHIVE_TAPE
kill(pid, SIGTERM);
waitpid(pid, NULL, 0);
#endif
return(buffer);
}