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/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8; -*- */
/* camel-imap-wrapper.c: data wrapper for offline IMAP data */
/*
* Author: Dan Winship <danw@helixcode.com>
*
* Copyright 2000 Helix Code, Inc. (http://www.helixcode.com)
*
* 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
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <errno.h>
#include <string.h>
#include "camel-imap-folder.h"
#include "camel-imap-wrapper.h"
#include "camel-imap-private.h"
#include "camel-exception.h"
#include "camel-stream-filter.h"
#include "camel-mime-filter-basic.h"
#include "camel-mime-filter-crlf.h"
#include "camel-mime-filter-charset.h"
#include "camel-mime-part.h"
static CamelDataWrapperClass *parent_class = NULL;
/* Returns the class for a CamelDataWrapper */
#define CDW_CLASS(so) CAMEL_DATA_WRAPPER_CLASS (CAMEL_OBJECT_GET_CLASS(so))
static int write_to_stream (CamelDataWrapper *imap_wrapper, CamelStream *stream);
static void
camel_imap_wrapper_class_init (CamelImapWrapperClass *camel_imap_wrapper_class)
{
CamelDataWrapperClass *camel_data_wrapper_class =
CAMEL_DATA_WRAPPER_CLASS (camel_imap_wrapper_class);
parent_class = CAMEL_DATA_WRAPPER_CLASS (camel_type_get_global_classfuncs (camel_data_wrapper_get_type ()));
/* virtual method override */
camel_data_wrapper_class->write_to_stream = write_to_stream;
}
static void
camel_imap_wrapper_finalize (CamelObject *object)
{
CamelImapWrapper *imap_wrapper = CAMEL_IMAP_WRAPPER (object);
if (imap_wrapper->folder)
camel_object_unref (CAMEL_OBJECT (imap_wrapper->folder));
if (imap_wrapper->uid)
g_free (imap_wrapper->uid);
if (imap_wrapper->part)
g_free (imap_wrapper->part_spec);
#ifdef ENABLE_THREADS
g_mutex_free (imap_wrapper->priv->lock);
#endif
g_free (imap_wrapper->priv);
}
static void
camel_imap_wrapper_init (gpointer object, gpointer klass)
{
CamelImapWrapper *imap_wrapper = CAMEL_IMAP_WRAPPER (object);
imap_wrapper->priv = g_new0 (struct _CamelImapWrapperPrivate, 1);
#ifdef ENABLE_THREADS
imap_wrapper->priv->lock = g_mutex_new ();
#endif
}
CamelType
camel_imap_wrapper_get_type (void)
{
static CamelType camel_imap_wrapper_type = CAMEL_INVALID_TYPE;
if (camel_imap_wrapper_type == CAMEL_INVALID_TYPE) {
camel_imap_wrapper_type = camel_type_register (
CAMEL_DATA_WRAPPER_TYPE, "CamelImapWrapper",
sizeof (CamelImapWrapper),
sizeof (CamelImapWrapperClass),
(CamelObjectClassInitFunc) camel_imap_wrapper_class_init,
NULL,
(CamelObjectInitFunc) camel_imap_wrapper_init,
(CamelObjectFinalizeFunc) camel_imap_wrapper_finalize);
}
return camel_imap_wrapper_type;
}
static void
imap_wrapper_hydrate (CamelImapWrapper *imap_wrapper, CamelStream *stream)
{
CamelDataWrapper *data_wrapper = CAMEL_DATA_WRAPPER (imap_wrapper);
CamelStreamFilter *filterstream;
CamelMimeFilter *filter;
CamelContentType *ct;
filterstream = camel_stream_filter_new_with_stream (stream);
if (camel_mime_part_get_encoding (imap_wrapper->part) ==
CAMEL_MIME_PART_ENCODING_BASE64) {
filter = (CamelMimeFilter *)camel_mime_filter_basic_new_type (CAMEL_MIME_FILTER_BASIC_BASE64_DEC);
camel_stream_filter_add (filterstream, filter);
} else if (camel_mime_part_get_encoding (imap_wrapper->part) ==
CAMEL_MIME_PART_ENCODING_QUOTEDPRINTABLE) {
filter = (CamelMimeFilter *)camel_mime_filter_basic_new_type (CAMEL_MIME_FILTER_BASIC_QP_DEC);
camel_stream_filter_add (filterstream, filter);
} else
filter = NULL;
ct = camel_mime_part_get_content_type (imap_wrapper->part);
if (header_content_type_is (ct, "text", "*")) {
const char *charset;
/* If we just did B64/QP, need to also do CRLF->LF */
if (filter) {
filter = camel_mime_filter_crlf_new (CAMEL_MIME_FILTER_CRLF_DECODE,
CAMEL_MIME_FILTER_CRLF_MODE_CRLF_ONLY);
camel_stream_filter_add (filterstream, filter);
}
charset = header_content_type_param (ct, "charset");
if (charset && !(strcasecmp (charset, "us-ascii") == 0
|| strcasecmp (charset, "utf-8") == 0)) {
filter = (CamelMimeFilter *)camel_mime_filter_charset_new_convert (charset, "UTF-8");
if (filter)
camel_stream_filter_add (filterstream, filter);
}
}
data_wrapper->stream = CAMEL_STREAM (filterstream);
data_wrapper->offline = FALSE;
camel_object_unref (CAMEL_OBJECT (imap_wrapper->folder));
imap_wrapper->folder = NULL;
g_free (imap_wrapper->uid);
imap_wrapper->uid = NULL;
g_free (imap_wrapper->part_spec);
imap_wrapper->part = NULL;
}
static int
write_to_stream (CamelDataWrapper *data_wrapper, CamelStream *stream)
{
CamelImapWrapper *imap_wrapper = CAMEL_IMAP_WRAPPER (data_wrapper);
CAMEL_IMAP_WRAPPER_LOCK (imap_wrapper, lock);
if (data_wrapper->offline) {
CamelStream *datastream;
datastream = camel_imap_folder_fetch_data (
imap_wrapper->folder, imap_wrapper->uid,
imap_wrapper->part_spec, FALSE, NULL);
if (!datastream) {
CAMEL_IMAP_WRAPPER_UNLOCK (imap_wrapper, lock);
errno = ENETUNREACH;
return -1;
}
imap_wrapper_hydrate (imap_wrapper, datastream);
camel_object_unref (CAMEL_OBJECT (datastream));
}
CAMEL_IMAP_WRAPPER_UNLOCK (imap_wrapper, lock);
return parent_class->write_to_stream (data_wrapper, stream);
}
CamelDataWrapper *
camel_imap_wrapper_new (CamelImapFolder *imap_folder, CamelContentType *type,
const char *uid, const char *part_spec,
CamelMimePart *part)
{
CamelImapWrapper *imap_wrapper;
CamelStream *stream;
imap_wrapper = (CamelImapWrapper *)camel_object_new(camel_imap_wrapper_get_type());
camel_data_wrapper_set_mime_type_field (CAMEL_DATA_WRAPPER (imap_wrapper), type);
((CamelDataWrapper *)imap_wrapper)->offline = TRUE;
imap_wrapper->folder = imap_folder;
camel_object_ref (CAMEL_OBJECT (imap_folder));
imap_wrapper->uid = g_strdup (uid);
imap_wrapper->part_spec = g_strdup (part_spec);
/* Don't ref this, it's our parent. */
imap_wrapper->part = part;
/* Try the cache. */
stream = camel_imap_folder_fetch_data (imap_folder, uid, part_spec,
TRUE, NULL);
if (stream) {
imap_wrapper_hydrate (imap_wrapper, stream);
camel_object_unref (CAMEL_OBJECT (stream));
}
return (CamelDataWrapper *)imap_wrapper;
}
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