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/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
/*
* Authors: Jeffrey Stedfast <fejj@ximian.com>
*
* Copyright 2001 Ximian, Inc. (www.ximian.com)
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of version 2 of the GNU General Public
* License as published by the Free Software Foundation.
*
* 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.
*
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "camel-pgp-mime.h"
#include "camel-mime-message.h"
/**
* camel_pgp_mime_is_rfc2015_signed:
* @mime_part: MIME part
*
* Checks that this part is a multipart/signed part following the
* rfc2015 and/or rfc3156 PGP/MIME specifications.
*
* Returns %TRUE if this looks to be a valid PGP/MIME multipart/signed
* part or %FALSE otherwise.
**/
gboolean
camel_pgp_mime_is_rfc2015_signed (CamelMimePart *mime_part)
{
CamelDataWrapper *wrapper;
CamelMultipart *mp;
CamelMimePart *part;
CamelContentType *type;
#ifdef ENABLE_PEDANTIC_PGPMIME
const char *param, *micalg;
#endif
int nparts;
/* check that we have a multipart/signed */
type = camel_mime_part_get_content_type (mime_part);
if (!header_content_type_is (type, "multipart", "signed"))
return FALSE;
#ifdef ENABLE_PEDANTIC_PGPMIME
/* check that we have a protocol param with the value: "application/pgp-signature" */
param = header_content_type_param (type, "protocol");
if (!param || strcasecmp (param, "application/pgp-signature"))
return FALSE;
/* check that we have a micalg parameter */
micalg = header_content_type_param (type, "micalg");
if (!micalg)
return FALSE;
#endif /* ENABLE_PEDANTIC_PGPMIME */
/* check that we have exactly 2 subparts */
wrapper = camel_medium_get_content_object (CAMEL_MEDIUM (mime_part));
mp = CAMEL_MULTIPART (wrapper);
nparts = camel_multipart_get_number (mp);
if (nparts != 2)
return FALSE;
/* The first part may be of any type except for
* application/pgp-signature - check it. */
part = camel_multipart_get_part (mp, 0);
type = camel_mime_part_get_content_type (part);
if (header_content_type_is (type, "application", "pgp-signature"))
return FALSE;
/* The second part should be application/pgp-signature. */
part = camel_multipart_get_part (mp, 1);
type = camel_mime_part_get_content_type (part);
if (!header_content_type_is (type, "application", "pgp-signature"))
return FALSE;
return TRUE;
}
/**
* camel_pgp_mime_is_rfc2015_encrypted:
* @mime_part: MIME part
*
* Checks that this part is a multipart/encrypted part following the
* rfc2015 and/or rfc3156 PGP/MIME specifications.
*
* Returns %TRUE if this looks to be a valid PGP/MIME
* multipart/encrypted part or %FALSE otherwise.
**/
gboolean
camel_pgp_mime_is_rfc2015_encrypted (CamelMimePart *mime_part)
{
CamelDataWrapper *wrapper;
CamelMultipart *mp;
CamelMimePart *part;
CamelContentType *type;
#ifdef ENABLE_PEDANTIC_PGPMIME
const char *param;
#endif
int nparts;
/* check that we have a multipart/encrypted */
type = camel_mime_part_get_content_type (mime_part);
if (!header_content_type_is (type, "multipart", "encrypted"))
return FALSE;
#ifdef ENABLE_PEDANTIC_PGPMIME
/* check that we have a protocol param with the value: "application/pgp-encrypted" */
param = header_content_type_param (type, "protocol");
if (!param || strcasecmp (param, "application/pgp-encrypted"))
return FALSE;
#endif /* ENABLE_PEDANTIC_PGPMIME */
/* check that we have at least 2 subparts */
wrapper = camel_medium_get_content_object (CAMEL_MEDIUM (mime_part));
mp = CAMEL_MULTIPART (wrapper);
nparts = camel_multipart_get_number (mp);
if (nparts < 2)
return FALSE;
/* The first part should be application/pgp-encrypted */
part = camel_multipart_get_part (mp, 0);
type = camel_mime_part_get_content_type (part);
if (!header_content_type_is (type, "application", "pgp-encrypted"))
return FALSE;
/* The second part should be application/octet-stream - this
is the one we care most about */
part = camel_multipart_get_part (mp, 1);
type = camel_mime_part_get_content_type (part);
if (!header_content_type_is (type, "application", "octet-stream"))
return FALSE;
return TRUE;
}
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