evolution/camel/camel-mime-part-utils.c

/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8; fill-column: 160 -*- */
/* camel-mime-part-utils : Utility for mime parsing and so on
 *
 * Authors: Bertrand Guiheneuf <bertrand@helixcode.com>
 *          Michael Zucchi <notzed@ximian.com>
 *          Jeffrey Stedfast <fejj@ximian.com>
 *
 * Copyright 1999-2003 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 <string.h>
#include <unistd.h>
#include <ctype.h>
#include <errno.h>

#include <gal/util/e-iconv.h>

#include "camel-charset-map.h"
#include "camel-mime-part-utils.h"
#include "camel-mime-message.h"
#include "camel-multipart.h"
#include "camel-multipart-signed.h"
#include "camel-multipart-encrypted.h"
#include "camel-seekable-substream.h"
#include "camel-stream-fs.h"
#include "camel-stream-filter.h"
#include "camel-stream-mem.h"
#include "camel-mime-filter-basic.h"
#include "camel-mime-filter-charset.h"
#include "camel-mime-filter-crlf.h"
#include "camel-mime-filter-save.h"
#include "camel-html-parser.h"

#define d(x) /*(printf("%s(%d): ", __FILE__, __LINE__),(x))
	       #include <stdio.h>*/

/* simple data wrapper */
static void
simple_data_wrapper_construct_from_parser (CamelDataWrapper *dw, CamelMimeParser *mp)
{
	char *encoding, *buf;
	GByteArray *buffer;
	CamelStream *mem;
	size_t len;
	
	d(printf ("simple_data_wrapper_construct_from_parser()\n"));
	
	/* first, work out conversion, if any, required, we dont care about what we dont know about */
	encoding = header_content_encoding_decode (camel_mime_parser_header (mp, "Content-Transfer-Encoding", NULL));
	
	/* read in the entire content */
	buffer = g_byte_array_new ();
	while (camel_mime_parser_step (mp, &buf, &len) != HSCAN_BODY_END) {
		d(printf("appending o/p data: %d: %.*s\n", len, len, buf));
		g_byte_array_append (buffer, buf, len);
	}
	
	d(printf("message part kept in memory!\n"));
	
	mem = camel_stream_mem_new_with_byte_array (buffer);
	camel_data_wrapper_construct_from_stream (dw, mem);
	camel_object_unref (mem);
	
	if (encoding) {
		dw->encoding = camel_mime_part_encoding_from_string (encoding);
		g_free (encoding);
	}
}

/* This replaces the data wrapper repository ... and/or could be replaced by it? */
void
camel_mime_part_construct_content_from_parser (CamelMimePart *dw, CamelMimeParser *mp)
{
	CamelDataWrapper *content = NULL;
	CamelContentType *ct;
	
	ct = camel_mime_parser_content_type (mp);
	
	switch (camel_mime_parser_state (mp)) {
	case HSCAN_HEADER:
		d(printf("Creating body part\n"));
		/* multipart/signed is some fucked up type that we must treat as binary data, fun huh, idiots. */
		if (header_content_type_is (ct, "multipart", "signed")) {
			content = (CamelDataWrapper *) camel_multipart_signed_new ();
			camel_multipart_construct_from_parser ((CamelMultipart *) content, mp);
		} else {
			content = camel_data_wrapper_new ();
			simple_data_wrapper_construct_from_parser (content, mp);
		}
		break;
	case HSCAN_MESSAGE:
		d(printf("Creating message part\n"));
		content = (CamelDataWrapper *) camel_mime_message_new ();
		camel_mime_part_construct_from_parser ((CamelMimePart *)content, mp);
		break;
	case HSCAN_MULTIPART:
		d(printf("Creating multi-part\n"));
		if (header_content_type_is (ct, "multipart", "encrypted"))
			content = (CamelDataWrapper *) camel_multipart_encrypted_new ();
		else if (header_content_type_is (ct, "multipart", "signed"))
			content = (CamelDataWrapper *) camel_multipart_signed_new ();
		else
			content = (CamelDataWrapper *) camel_multipart_new ();
		
		camel_multipart_construct_from_parser((CamelMultipart *)content, mp);
		d(printf("Created multi-part\n"));
		break;
	default:
		g_warning("Invalid state encountered???: %d", camel_mime_parser_state (mp));
	}
	
	if (content) {
		/* would you believe you have to set this BEFORE you set the content object???  oh my god !!!! */
		camel_data_wrapper_set_mime_type_field (content, camel_mime_part_get_content_type (dw));
		camel_medium_set_content_object ((CamelMedium *)dw, content);
		camel_object_unref (content);
	}
}