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/* -*- 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
*
* Copyright (C) 1999-2008 Novell, Inc. (www.novell.com)
*
* This library is free software: you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation.
*
* This library 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 Lesser General Public License
* for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this library. If not, see <http://www.gnu.org/licenses/>.
*
* Authors: Bertrand Guiheneuf <bertrand@helixcode.com>
* Michael Zucchi <notzed@ximian.com>
* Jeffrey Stedfast <fejj@ximian.com>
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <ctype.h>
#include <errno.h>
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include "camel-charset-map.h"
#include "camel-html-parser.h"
#include "camel-mime-filter-basic.h"
#include "camel-mime-filter-charset.h"
#include "camel-mime-filter-crlf.h"
#include "camel-mime-message.h"
#include "camel-mime-part-utils.h"
#include "camel-multipart-encrypted.h"
#include "camel-multipart-signed.h"
#include "camel-multipart.h"
#include "camel-stream-filter.h"
#include "camel-stream-fs.h"
#include "camel-stream-mem.h"
#include "camel-stream-buffer.h"
#include "camel-utf8.h"
#define d(x) /* (printf("%s(%d): ", __FILE__, __LINE__),(x)) */
/* simple data wrapper */
static gboolean
simple_data_wrapper_construct_from_parser (CamelDataWrapper *dw,
CamelMimeParser *mp,
GCancellable *cancellable,
GError **error)
{
gchar *buf;
GByteArray *buffer;
CamelStream *mem;
gsize len;
gboolean success;
d (printf ("simple_data_wrapper_construct_from_parser()\n"));
/* read in the entire content */
buffer = g_byte_array_new ();
while (camel_mime_parser_step (mp, &buf, &len) != CAMEL_MIME_PARSER_STATE_BODY_END) {
d (printf ("appending o/p data: %d: %.*s\n", len, len, buf));
g_byte_array_append (buffer, (guint8 *) buf, len);
}
d (printf ("message part kept in memory!\n"));
mem = camel_stream_mem_new_with_byte_array (buffer);
success = camel_data_wrapper_construct_from_stream_sync (
dw, mem, cancellable, error);
g_object_unref (mem);
return success;
}
/**
* camel_mime_part_construct_content_from_parser:
*
* Since: 2.24
**/
gboolean
camel_mime_part_construct_content_from_parser (CamelMimePart *dw,
CamelMimeParser *mp,
GCancellable *cancellable,
GError **error)
{
CamelDataWrapper *content = NULL;
CamelContentType *ct;
gchar *encoding;
gboolean success = TRUE;
g_return_val_if_fail (CAMEL_IS_MIME_PART (dw), FALSE);
ct = camel_mime_parser_content_type (mp);
encoding = camel_content_transfer_encoding_decode (camel_mime_parser_header (mp, "Content-Transfer-Encoding", NULL));
switch (camel_mime_parser_state (mp)) {
case CAMEL_MIME_PARSER_STATE_HEADER:
d (printf ("Creating body part\n"));
/* multipart/signed is some type that we must treat as binary data. */
if (camel_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 ();
success = simple_data_wrapper_construct_from_parser (
content, mp, cancellable, error);
}
break;
case CAMEL_MIME_PARSER_STATE_MESSAGE:
d (printf ("Creating message part\n"));
content = (CamelDataWrapper *) camel_mime_message_new ();
success = camel_mime_part_construct_from_parser_sync (
(CamelMimePart *) content, mp, cancellable, error);
break;
case CAMEL_MIME_PARSER_STATE_MULTIPART:
d (printf ("Creating multi-part\n"));
if (camel_content_type_is (ct, "multipart", "encrypted"))
content = (CamelDataWrapper *) camel_multipart_encrypted_new ();
else if (camel_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???: %u", camel_mime_parser_state (mp));
}
if (content) {
if (encoding)
content->encoding = camel_transfer_encoding_from_string (encoding);
/* 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 ((CamelMedium *) dw, content);
g_object_unref (content);
}
g_free (encoding);
return success;
}
/**
* camel_mime_message_build_preview:
*
* <note>
* <para>
* This function blocks like crazy.
* </para>
* </note>
*
* Since: 2.28
**/
gboolean
camel_mime_message_build_preview (CamelMimePart *msg,
CamelMessageInfo *info)
{
CamelDataWrapper *dw;
gboolean got_plain = FALSE;
dw = camel_medium_get_content ((CamelMedium *) msg);
if (camel_content_type_is (dw->mime_type, "multipart", "*")) {
gint i, nparts;
CamelMultipart *mp = (CamelMultipart *) camel_medium_get_content ((CamelMedium *) msg);
g_warn_if_fail (CAMEL_IS_MULTIPART (mp));
nparts = camel_multipart_get_number (mp);
for (i = 0; i < nparts && !got_plain; i++) {
CamelMimePart *part = camel_multipart_get_part (mp, i);
got_plain = camel_mime_message_build_preview (part, info);
}
} else if (camel_content_type_is (dw->mime_type, "text", "*") &&
/* !camel_content_type_is (dw->mime_type, "text", "html") && */
!camel_content_type_is (dw->mime_type, "text", "calendar")) {
CamelStream *mstream, *bstream;
/* FIXME Pass a GCancellable and GError here. */
mstream = camel_stream_mem_new ();
if (camel_data_wrapper_decode_to_stream_sync (dw, mstream, NULL, NULL) > 0) {
gchar *line = NULL;
GString *str = g_string_new (NULL);
g_seekable_seek (
G_SEEKABLE (mstream), 0,
G_SEEK_SET, NULL, NULL);
bstream = camel_stream_buffer_new (mstream, CAMEL_STREAM_BUFFER_READ | CAMEL_STREAM_BUFFER_BUFFER);
/* We should fetch just 200 unquoted lines. */
while ((line = camel_stream_buffer_read_line ((CamelStreamBuffer *) bstream, NULL, NULL)) && str->len < 200) {
gchar *tmp = line;
if (*line == '>' || strstr (line, "wrote:")) {
g_free (tmp);
continue;
}
if (g_str_has_prefix (line, "--")) {
g_free (tmp);
line = NULL;
break;
}
while (*line && ((*line == ' ') || *line == '\t'))
line++;
if (*line == '\0' || *line == '\n') {
g_free (tmp);
continue;
}
g_string_append (str, " ");
g_string_append (str, line);
g_free (tmp);
line = NULL;
}
if (str->len > 100) {
g_string_insert (str, 100, "\n");
}
/* We don't mark dirty, as we don't store these */
((CamelMessageInfoBase *) info)->preview = camel_utf8_make_valid (str->str);
g_string_free (str, TRUE);
g_object_unref (bstream);
}
g_object_unref (mstream);
return TRUE;
}
return got_plain;
}
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