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/*
* This file is part of libextractor.
* Copyright (C) 2012 Vidyut Samanta and Christian Grothoff
*
* libextractor 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 3, or (at your
* option) any later version.
*
* libextractor 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 libextractor; see the file COPYING. If not, write to the
* Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
/**
* @file plugins/zip_extractor.c
* @brief plugin to support ZIP files
* @author Christian Grothoff
*/
#include "platform.h"
#include <ctype.h>
#include "extractor.h"
#include "unzip.h"
/**
* Main entry method for the 'application/zip' extraction plugin.
*
* @param ec extraction context provided to the plugin
*/
void
EXTRACTOR_zip_extract_method (struct EXTRACTOR_ExtractContext *ec)
{
struct EXTRACTOR_UnzipFile *uf;
struct EXTRACTOR_UnzipFileInfo fi;
char fname[256];
char fcomment[256];
if (NULL == (uf = EXTRACTOR_common_unzip_open (ec)))
return;
if ( (EXTRACTOR_UNZIP_OK ==
EXTRACTOR_common_unzip_go_find_local_file (uf,
"meta.xml",
2)) ||
(EXTRACTOR_UNZIP_OK ==
EXTRACTOR_common_unzip_go_find_local_file (uf,
"META-INF/MANIFEST.MF",
2)) )
{
/* not a normal zip, might be odf, jar, etc. */
goto CLEANUP;
}
if (EXTRACTOR_UNZIP_OK !=
EXTRACTOR_common_unzip_go_to_first_file (uf))
{
/* zip malformed? */
goto CLEANUP;
}
if (0 !=
ec->proc (ec->cls,
"zip",
EXTRACTOR_METATYPE_MIMETYPE,
EXTRACTOR_METAFORMAT_UTF8,
"text/plain",
"application/zip",
strlen ("application/zip") + 1))
goto CLEANUP;
if (EXTRACTOR_UNZIP_OK ==
EXTRACTOR_common_unzip_get_global_comment (uf,
fcomment,
sizeof (fcomment)))
{
if ( (0 != strlen (fcomment)) &&
(0 !=
ec->proc (ec->cls,
"zip",
EXTRACTOR_METATYPE_COMMENT,
EXTRACTOR_METAFORMAT_C_STRING,
"text/plain",
fcomment,
strlen (fcomment) + 1)))
goto CLEANUP;
}
do
{
if (EXTRACTOR_UNZIP_OK ==
EXTRACTOR_common_unzip_get_current_file_info (uf,
&fi,
fname,
sizeof (fname),
NULL, 0,
fcomment,
sizeof (fcomment)))
{
if ( (0 != strlen (fname)) &&
(0 !=
ec->proc (ec->cls,
"zip",
EXTRACTOR_METATYPE_FILENAME,
EXTRACTOR_METAFORMAT_C_STRING,
"text/plain",
fname,
strlen (fname) + 1)))
goto CLEANUP;
if ( (0 != strlen (fcomment)) &&
(0 !=
ec->proc (ec->cls,
"zip",
EXTRACTOR_METATYPE_COMMENT,
EXTRACTOR_METAFORMAT_C_STRING,
"text/plain",
fcomment,
strlen (fcomment) + 1)))
goto CLEANUP;
}
}
while (EXTRACTOR_UNZIP_OK ==
EXTRACTOR_common_unzip_go_to_next_file (uf));
CLEANUP:
(void) EXTRACTOR_common_unzip_close (uf);
}
/* end of zip_extractor.c */
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