diff options
Diffstat (limited to 'archival/libunarchive/check_trailer_gzip.c')
| -rw-r--r-- | archival/libunarchive/check_trailer_gzip.c | 69 |
1 files changed, 0 insertions, 69 deletions
diff --git a/archival/libunarchive/check_trailer_gzip.c b/archival/libunarchive/check_trailer_gzip.c deleted file mode 100644 index b30db71..0000000 --- a/archival/libunarchive/check_trailer_gzip.c +++ /dev/null @@ -1,69 +0,0 @@ -/* vi: set sw=4 ts=4: */ -/* - * busybox gunzip trailing header handler - * Copyright Glenn McGrath 2002 - * - * 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 <sys/types.h> -#include <sys/wait.h> -#include <signal.h> -#include <stdlib.h> -#include <string.h> -#include <unistd.h> -#include <fcntl.h> -#include "config.h" -#include "busybox.h" -#include "unarchive.h" - -extern unsigned int gunzip_crc; -extern unsigned int gunzip_bytes_out; -extern unsigned char *bytebuffer; -extern unsigned short bytebuffer_offset; -extern unsigned short bytebuffer_size; -//extern unsigned char *gunzip_in_buffer; -//extern unsigned char gunzip_in_buffer_count; - -extern void check_trailer_gzip(int src_fd) -{ - unsigned int stored_crc = 0; - unsigned char count; - - /* top up the input buffer with the rest of the trailer */ - count = bytebuffer_size - bytebuffer_offset; - if (count < 8) { - xread_all(src_fd, &bytebuffer[bytebuffer_size], 8 - count); - bytebuffer_size += 8 - count; - } - for (count = 0; count != 4; count++) { - stored_crc |= (bytebuffer[bytebuffer_offset] << (count * 8)); - bytebuffer_offset++; - } - - /* Validate decompression - crc */ - if (stored_crc != (gunzip_crc ^ 0xffffffffL)) { - error_msg_and_die("crc error"); - } - - /* Validate decompression - size */ - if (gunzip_bytes_out != - (bytebuffer[bytebuffer_offset] | (bytebuffer[bytebuffer_offset+1] << 8) | - (bytebuffer[bytebuffer_offset+2] << 16) | (bytebuffer[bytebuffer_offset+3] << 24))) { - error_msg_and_die("Incorrect length, but crc is correct"); - } - -} |