98 lines
2.8 KiB
C
98 lines
2.8 KiB
C
/* vi: set sw=4 ts=4: */
|
|
/*
|
|
* Copyright (C) tons of folks. Tracking down who wrote what
|
|
* isn't something I'm going to worry about... If you wrote something
|
|
* here, please feel free to acknowledge your work.
|
|
*
|
|
* 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
|
|
*
|
|
* Based in part on code from sash, Copyright (c) 1999 by David I. Bell
|
|
* Permission has been granted to redistribute this code under the GPL.
|
|
*
|
|
*/
|
|
|
|
#include <fcntl.h>
|
|
#include <unistd.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <signal.h>
|
|
#include "libbb.h"
|
|
|
|
/*
|
|
* The contents of argument depend on the value of function.
|
|
* It is either a dir name or a control file or field name(see dpkg_deb.c)
|
|
*/
|
|
extern char *deb_extract(const char *package_filename, const int function, const char *argument, const char *argument2)
|
|
{
|
|
|
|
FILE *deb_file, *uncompressed_file;
|
|
ar_headers_t *headers = NULL;
|
|
char *ared_file = NULL;
|
|
char *output_buffer = NULL;
|
|
int gunzip_pid;
|
|
|
|
switch (function) {
|
|
case (extract_info):
|
|
case (extract_control):
|
|
case (extract_field):
|
|
ared_file = xstrdup("control.tar.gz");
|
|
break;
|
|
default:
|
|
ared_file = xstrdup("data.tar.gz");
|
|
break;
|
|
}
|
|
|
|
/* open the debian package to be worked on */
|
|
deb_file = wfopen(package_filename, "r");
|
|
|
|
headers = (ar_headers_t *) xmalloc(sizeof(ar_headers_t));
|
|
|
|
/* get a linked list of all ar entries */
|
|
if ((headers = get_ar_headers(deb_file)) == NULL) {
|
|
error_msg("Couldnt get ar headers\n");
|
|
return(NULL);
|
|
}
|
|
|
|
/* seek to the start of the .tar.gz file within the ar file*/
|
|
if (seek_ared_file(deb_file, headers, ared_file) == EXIT_FAILURE) {
|
|
error_msg("Couldnt seek to ar file");
|
|
}
|
|
|
|
/* open a stream of decompressed data */
|
|
uncompressed_file = fdopen(gz_open(deb_file, &gunzip_pid), "r");
|
|
|
|
if (function & extract_fsys_tarfile) {
|
|
copy_file_chunk(uncompressed_file, stdout, -1);
|
|
} else {
|
|
FILE *output;
|
|
|
|
if (function & extract_contents_to_file) {
|
|
output = wfopen(argument, "w");
|
|
} else {
|
|
output = stdout;
|
|
}
|
|
|
|
output_buffer = untar(uncompressed_file, output, function, argument, argument2);
|
|
if (output != stdout) {
|
|
fclose(output);
|
|
}
|
|
}
|
|
gz_close(gunzip_pid);
|
|
fclose(deb_file);
|
|
fclose(uncompressed_file);
|
|
free(ared_file);
|
|
|
|
return(output_buffer);
|
|
} |