1 /* Copyright (c) 2006, Nokia Corporation
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions are
8 * * Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * * Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * * Neither the name of the Nokia Corporation nor the names of its
14 * contributors may be used to endorse or promote products derived from
15 * this software without specific prior written permission.
17 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
18 * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
19 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
20 * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
21 * OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
22 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
23 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
24 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
25 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
26 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
27 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
31 #include <gtkhtml/gtkhtml.h>
32 #include <tny-gtk-text-buffer-stream.h>
33 #include <tny-simple-list.h>
34 #include <tny-folder.h>
35 #include <modest-runtime.h>
36 #include "modest-formatter.h"
37 #include <tny-camel-stream.h>
38 #include <tny-camel-mime-part.h>
39 #include <camel/camel-stream-buffer.h>
40 #include <camel/camel-stream-mem.h>
41 #include <glib/gprintf.h>
42 #include <modest-tny-folder.h>
43 #include "modest-tny-mime-part.h"
48 #endif /*HAVE_CONFIG_H */
50 #include <modest-tny-msg.h>
51 #include "modest-text-utils.h"
53 static TnyMimePart * add_body_part (TnyMsg *msg, const gchar *body,
54 const gchar *content_type);
55 static TnyMimePart * add_html_body_part (TnyMsg *msg, const gchar *body);
56 static void add_attachments (TnyMimePart *part, GList *attachments_list, gboolean add_inline);
57 static void add_images (TnyMsg *msg, GList *attachments_list);
58 static char * get_content_type(const gchar *s);
59 static gboolean is_ascii(const gchar *s);
63 modest_tny_msg_new (const gchar* mailto, const gchar* from, const gchar *cc,
64 const gchar *bcc, const gchar* subject, const gchar *body,
72 new_msg = modest_formatter_create_message (NULL, TRUE, (attachments != NULL), FALSE);
73 header = tny_msg_get_header (new_msg);
75 if ((from != NULL) && (strlen(from) > 0)) {
76 tny_header_set_from (TNY_HEADER (header), from);
77 tny_header_set_replyto (TNY_HEADER (header), from);
79 if ((mailto != NULL) && (strlen(mailto) > 0))
80 tny_header_set_to (TNY_HEADER (header), mailto);
81 if ((cc != NULL) && (strlen(cc) > 0))
82 tny_header_set_cc (TNY_HEADER (header), cc);
83 if ((bcc != NULL) && (strlen(bcc) > 0))
84 tny_header_set_bcc (TNY_HEADER (header), bcc);
86 if ((subject != NULL) && (strlen(subject) > 0))
87 tny_header_set_subject (TNY_HEADER (header), subject);
89 content_type = get_content_type(body);
91 /* set modest as the X-Mailer
92 * we could this in the platform factory, but then the header
93 * would show up before all the others.
95 tny_mime_part_set_header_pair (TNY_MIME_PART (new_msg), "X-Mailer", "Modest "
98 /* Add the body of the new mail */
99 /* This is needed even if body is NULL or empty. */
100 add_body_part (new_msg, body, content_type);
101 g_free (content_type);
103 /* Add attachments */
105 add_attachments (TNY_MIME_PART (new_msg), attachments, FALSE);
107 g_object_unref(header);
113 modest_tny_msg_new_html_plain (const gchar* mailto, const gchar* from, const gchar *cc,
114 const gchar *bcc, const gchar* subject,
115 const gchar *html_body, const gchar *plain_body,
116 GList *attachments, GList *images)
123 new_msg = modest_formatter_create_message (NULL, FALSE, (attachments != NULL), (images != NULL));
124 header = tny_msg_get_header (new_msg);
126 if ((from != NULL) && (strlen(from) > 0)) {
127 tny_header_set_from (TNY_HEADER (header), from);
128 tny_header_set_replyto (TNY_HEADER (header), from);
130 if ((mailto != NULL) && (strlen(mailto) > 0))
131 tny_header_set_to (TNY_HEADER (header), mailto);
132 if ((cc != NULL) && (strlen(cc) > 0))
133 tny_header_set_cc (TNY_HEADER (header), cc);
134 if ((bcc != NULL) && (strlen(bcc) > 0))
135 tny_header_set_bcc (TNY_HEADER (header), bcc);
137 if ((subject != NULL) && (strlen(subject) > 0))
138 tny_header_set_subject (TNY_HEADER (header), subject);
140 content_type = get_content_type(plain_body);
142 /* set modest as the X-Mailer
143 * we could this in the platform factory, but then the header
144 * would show up before all the others.
146 tny_mime_part_set_header_pair (TNY_MIME_PART (new_msg), "X-Mailer", "Modest "
149 /* Add the body of the new mail */
150 add_body_part (new_msg, plain_body, content_type);
151 add_html_body_part (new_msg, html_body);
152 g_free (content_type);
154 /* Add attachments */
155 add_attachments (TNY_MIME_PART (new_msg), attachments, FALSE);
156 add_images (new_msg, images);
158 g_object_unref(header);
164 /* FIXME: this func copy from modest-mail-operation: refactor */
166 add_body_part (TnyMsg *msg,
168 const gchar *content_type)
170 TnyMimePart *text_body_part = NULL;
171 TnyStream *text_body_stream;
173 /* Create the stream */
174 text_body_stream = TNY_STREAM (tny_camel_stream_new
175 (camel_stream_mem_new_with_buffer
176 (body, (body ? strlen(body) : 0))));
178 text_body_part = modest_formatter_create_body_part (NULL, msg);
180 /* Construct MIME part */
181 tny_stream_reset (text_body_stream);
182 tny_mime_part_construct_from_stream (text_body_part,
185 tny_stream_reset (text_body_stream);
187 g_object_unref (G_OBJECT(text_body_part));
190 g_object_unref (text_body_stream);
192 return text_body_part;
196 add_html_body_part (TnyMsg *msg,
199 TnyMimePart *html_body_part = NULL;
200 TnyStream *html_body_stream;
202 /* Create the stream */
203 html_body_stream = TNY_STREAM (tny_camel_stream_new
204 (camel_stream_mem_new_with_buffer
205 (body, strlen(body))));
207 /* Create body part if needed */
208 html_body_part = modest_formatter_create_body_part (NULL, msg);
210 /* Construct MIME part */
211 tny_stream_reset (html_body_stream);
212 tny_mime_part_construct_from_stream (html_body_part,
214 "text/html; charset=utf-8");
215 tny_stream_reset (html_body_stream);
217 g_object_unref (G_OBJECT(html_body_part));
220 g_object_unref (html_body_stream);
222 return html_body_part;
226 copy_mime_part (TnyMimePart *part)
228 TnyMimePart *result = NULL;
229 const gchar *attachment_content_type;
230 const gchar *attachment_filename;
231 const gchar *attachment_cid;
233 TnyIterator *iterator;
234 TnyStream *attachment_stream;
236 if (TNY_IS_MSG (part)) {
241 result = tny_platform_factory_new_mime_part (
242 modest_runtime_get_platform_factory());
244 attachment_content_type = tny_mime_part_get_content_type (part);
246 /* get mime part headers */
247 attachment_filename = tny_mime_part_get_filename (part);
248 attachment_cid = tny_mime_part_get_content_id (part);
250 /* fill the stream */
251 attachment_stream = tny_mime_part_get_stream (part);
252 tny_stream_reset (attachment_stream);
253 tny_mime_part_construct_from_stream (result,
255 attachment_content_type);
256 tny_stream_reset (attachment_stream);
258 /* set other mime part fields */
259 tny_mime_part_set_filename (result, attachment_filename);
260 tny_mime_part_set_content_id (result, attachment_cid);
263 parts = tny_simple_list_new ();
264 tny_mime_part_get_parts (part, parts);
265 iterator = tny_list_create_iterator (parts);
266 while (!tny_iterator_is_done (iterator)) {
267 TnyMimePart *subpart = TNY_MIME_PART (tny_iterator_get_current (iterator));
269 const gchar *subpart_cid;
270 TnyMimePart *subpart_copy = copy_mime_part (subpart);
271 subpart_cid = tny_mime_part_get_content_id (subpart);
272 tny_mime_part_add_part (result, subpart_copy);
274 tny_mime_part_set_content_id (result, subpart_cid);
275 g_object_unref (subpart);
276 g_object_unref (subpart_copy);
279 tny_iterator_next (iterator);
281 g_object_unref (iterator);
282 g_object_unref (parts);
283 g_object_unref (attachment_stream);
289 add_attachments (TnyMimePart *part, GList *attachments_list, gboolean add_inline)
292 TnyMimePart *attachment_part, *old_attachment;
294 for (pos = (GList *)attachments_list; pos; pos = pos->next) {
296 old_attachment = pos->data;
297 if (!tny_mime_part_is_purged (old_attachment)) {
298 const gchar *old_cid;
299 old_cid = tny_mime_part_get_content_id (old_attachment);
300 attachment_part = copy_mime_part (old_attachment);
301 tny_mime_part_set_header_pair (attachment_part, "Content-Disposition",
302 add_inline?"inline":"attachment");
303 tny_mime_part_add_part (TNY_MIME_PART (part), attachment_part);
305 tny_mime_part_set_content_id (attachment_part, old_cid);
306 g_object_unref (attachment_part);
312 add_images (TnyMsg *msg, GList *images_list)
314 TnyMimePart *related_part = NULL;
315 const gchar *content_type;
317 content_type = tny_mime_part_get_content_type (TNY_MIME_PART (msg));
319 if ((content_type != NULL) && !strcasecmp (content_type, "multipart/related")) {
320 related_part = g_object_ref (msg);
321 } else if ((content_type != NULL) && !strcasecmp (content_type, "multipart/mixed")) {
322 TnyList *parts = TNY_LIST (tny_simple_list_new ());
323 TnyIterator *iter = NULL;
324 tny_mime_part_get_parts (TNY_MIME_PART (msg), parts);
325 iter = tny_list_create_iterator (parts);
327 while (!tny_iterator_is_done (iter)) {
328 TnyMimePart *part = TNY_MIME_PART (tny_iterator_get_current (iter));
329 if (part && !g_strcasecmp (tny_mime_part_get_content_type (part), "multipart/related")) {
333 g_object_unref (part);
335 tny_iterator_next (iter);
337 g_object_unref (iter);
338 g_object_unref (parts);
341 if (related_part != NULL) {
342 /* TODO: attach images in their proper place */
343 add_attachments (related_part, images_list, TRUE);
344 g_object_unref (related_part);
350 modest_tny_msg_get_body (TnyMsg *msg, gboolean want_html, gboolean *is_html)
355 GtkTextIter start, end;
357 gboolean result_was_html = TRUE;
359 g_return_val_if_fail (msg && TNY_IS_MSG(msg), NULL);
361 body = modest_tny_msg_find_body_part(msg, want_html);
365 buf = gtk_text_buffer_new (NULL);
366 stream = TNY_STREAM (tny_gtk_text_buffer_stream_new (buf));
367 tny_stream_reset (stream);
368 tny_mime_part_decode_to_stream (body, stream, NULL);
369 tny_stream_reset (stream);
371 gtk_text_buffer_get_bounds (buf, &start, &end);
372 to_quote = gtk_text_buffer_get_text (buf, &start, &end, FALSE);
373 if (tny_mime_part_content_type_is (body, "text/plain")) {
374 gchar *to_quote_converted = modest_text_utils_convert_to_html (to_quote);
376 to_quote = to_quote_converted;
377 result_was_html = FALSE;
380 g_object_unref (buf);
381 g_object_unref (G_OBJECT(stream));
382 g_object_unref (G_OBJECT(body));
385 *is_html = result_was_html;
392 modest_tny_msg_find_body_part_from_mime_part (TnyMimePart *msg, gboolean want_html)
394 const gchar *desired_mime_type = want_html ? "text/html" : "text/plain";
395 TnyMimePart *part = NULL;
396 TnyList *parts = NULL;
397 TnyIterator *iter = NULL;
402 parts = TNY_LIST (tny_simple_list_new());
403 tny_mime_part_get_parts (TNY_MIME_PART (msg), parts);
405 iter = tny_list_create_iterator(parts);
407 /* no parts? assume it's single-part message */
408 if (tny_iterator_is_done(iter)) {
409 g_object_unref (G_OBJECT(iter));
410 return TNY_MIME_PART (g_object_ref(G_OBJECT(msg)));
413 gchar *tmp, *content_type = NULL;
414 gboolean has_content_disp_name = FALSE;
416 part = TNY_MIME_PART(tny_iterator_get_current (iter));
419 g_warning ("%s: not a valid mime part", __FUNCTION__);
423 /* it's a message --> ignore */
424 if (part && TNY_IS_MSG (part)) {
425 g_object_unref (part);
426 tny_iterator_next (iter);
430 /* we need to strdown the content type, because
431 * tny_mime_part_has_content_type does not do it...
433 content_type = g_ascii_strdown (tny_mime_part_get_content_type (part), -1);
435 /* mime-parts with a content-disposition header (either 'inline' or 'attachment')
436 * and a 'name=' thingy cannot be body parts
439 tmp = modest_tny_mime_part_get_header_value (part, "Content-Disposition");
441 gchar *content_disp = g_ascii_strdown(tmp, -1);
443 has_content_disp_name = g_strstr_len (content_disp, strlen(content_disp), "name=") != NULL;
444 g_free (content_disp);
447 if (g_str_has_prefix (content_type, desired_mime_type) && !has_content_disp_name) {
448 /* we found the desired mime-type! */
449 g_free (content_type);
452 } else if (g_str_has_prefix(content_type, "multipart")) {
454 /* multipart? recurse! */
455 g_object_unref (part);
456 g_free (content_type);
457 part = modest_tny_msg_find_body_part_from_mime_part (part, want_html);
461 g_free (content_type);
464 g_object_unref (G_OBJECT(part));
468 tny_iterator_next (iter);
470 } while (!tny_iterator_is_done(iter));
473 g_object_unref (G_OBJECT(iter));
474 g_object_unref (G_OBJECT(parts));
476 /* if were trying to find an HTML part and couldn't find it,
477 * try to find a text/plain part instead
479 if (!part && want_html)
480 return modest_tny_msg_find_body_part_from_mime_part (msg, FALSE);
482 return part; /* this maybe NULL, this is not an error; some message just don't have a body
488 modest_tny_msg_find_body_part (TnyMsg *msg, gboolean want_html)
490 g_return_val_if_fail (msg && TNY_IS_MSG(msg), NULL);
492 return modest_tny_msg_find_body_part_from_mime_part (TNY_MIME_PART(msg),
497 #define MODEST_TNY_MSG_PARENT_UID "parent-uid"
500 create_reply_forward_mail (TnyMsg *msg, TnyHeader *header, const gchar *from,
501 const gchar *signature, gboolean is_reply,
502 guint type /*ignored*/, GList *attachments)
505 TnyHeader *new_header;
507 TnyMimePart *body = NULL;
508 ModestFormatter *formatter;
509 gchar *subject_prefix;
510 gboolean no_text_part;
513 g_object_ref (header);
515 header = tny_msg_get_header (msg);
517 /* Get body from original msg. Always look for the text/plain
518 part of the message to create the reply/forwarded mail */
520 body = modest_tny_msg_find_body_part (msg, FALSE);
522 if (modest_conf_get_bool (modest_runtime_get_conf (), MODEST_CONF_PREFER_FORMATTED_TEXT,
524 formatter = modest_formatter_new ("text/html", signature);
526 formatter = modest_formatter_new ("text/plain", signature);
529 /* if we don't have a text-part */
530 no_text_part = (!body) || (strcmp (tny_mime_part_get_content_type (body), "text/html")==0);
532 /* when we're reply, include the text part if we have it, or nothing otherwise. */
534 new_msg = modest_formatter_quote (formatter, no_text_part ? NULL: body, header,
537 /* for attachements; inline if there is a text part, and include the
538 * full old mail if there was none */
540 new_msg = modest_formatter_attach (formatter, msg, header);
542 new_msg = modest_formatter_inline (formatter, body, header,
546 g_object_unref (G_OBJECT(formatter));
548 g_object_unref (G_OBJECT(body));
550 /* Fill the header */
551 new_header = tny_msg_get_header (new_msg);
552 tny_header_set_from (new_header, from);
553 tny_header_set_replyto (new_header, from);
555 /* Change the subject */
557 subject_prefix = g_strconcat (_("mail_va_re"), ":", NULL);
559 subject_prefix = g_strconcat (_("mail_va_fw"), ":", NULL);
561 (gchar *) modest_text_utils_derived_subject (tny_header_get_subject(header),
563 g_free (subject_prefix);
564 tny_header_set_subject (new_header, (const gchar *) new_subject);
565 g_free (new_subject);
567 /* get the parent uid, and set it as a gobject property on the new msg */
569 gchar* parent_uid = modest_tny_folder_get_header_unique_id (header);
570 g_object_set_data_full (G_OBJECT(new_msg), MODEST_TNY_MSG_PARENT_UID,
574 /* set modest as the X-Mailer
575 * we could this in the platform factory, but then the header
576 * would show up before all the others.
578 tny_mime_part_set_header_pair (TNY_MIME_PART (msg), "X-Mailer", "Modest "
582 g_object_unref (G_OBJECT (new_header));
583 g_object_unref (G_OBJECT (header));
584 /* ugly to unref it here instead of in the calling func */
590 modest_tny_msg_get_parent_uid (TnyMsg *msg)
592 g_return_val_if_fail (msg && TNY_IS_MSG(msg), NULL);
594 return g_object_get_data (G_OBJECT(msg), MODEST_TNY_MSG_PARENT_UID);
600 add_if_attachment (gpointer data, gpointer user_data)
603 GList **attachments_list;
605 part = TNY_MIME_PART (data);
606 attachments_list = ((GList **) user_data);
608 if ((tny_mime_part_is_attachment (part))||(TNY_IS_MSG (part))) {
609 *attachments_list = g_list_prepend (*attachments_list, part);
615 modest_tny_msg_create_forward_msg (TnyMsg *msg,
617 const gchar *signature,
618 ModestTnyMsgForwardType forward_type)
621 TnyList *parts = NULL;
622 GList *attachments_list = NULL;
624 g_return_val_if_fail (msg && TNY_IS_MSG(msg), NULL);
626 /* Add attachments */
627 parts = TNY_LIST (tny_simple_list_new());
628 tny_mime_part_get_parts (TNY_MIME_PART (msg), parts);
629 tny_list_foreach (parts, add_if_attachment, &attachments_list);
631 new_msg = create_reply_forward_mail (msg, NULL, from, signature, FALSE, forward_type,
633 add_attachments (TNY_MIME_PART (new_msg), attachments_list, FALSE);
636 if (attachments_list) {
637 g_list_foreach (attachments_list, (GFunc) g_object_unref, NULL);
638 g_list_free (attachments_list);
640 g_object_unref (G_OBJECT (parts));
648 count_addresses (const gchar* addresses)
656 if (*addresses == ',' || *addresses == ';')
665 /* get the new To:, based on the old header,
666 * result is newly allocated or NULL in case of error
669 get_new_to (TnyMsg *msg, TnyHeader *header, const gchar* from,
670 ModestTnyMsgReplyMode reply_mode)
672 const gchar* old_reply_to;
673 const gchar* old_from;
676 /* according to RFC2369 (http://www.faqs.org/rfcs/rfc2369.html), we
677 * can identify Mailing-List posts by the List-Help header.
678 * for mailing lists, both the Reply-To: and From: should be included
679 * in the new To:; for now, we're ignoring List-Post
681 gchar* list_help = modest_tny_mime_part_get_header_value (TNY_MIME_PART(msg),
683 gboolean is_mailing_list = (list_help != NULL);
687 /* reply to sender, use ReplyTo or From */
688 //old_reply_to = tny_header_get_replyto (header);
689 old_reply_to = modest_tny_mime_part_get_header_value (TNY_MIME_PART(msg),
691 old_from = tny_header_get_from (header);
693 if (!old_from && !old_reply_to) {
694 g_warning ("%s: failed to get either Reply-To: or From: from header",
699 /* for mailing lists, use both Reply-To and From if we did a
702 if (is_mailing_list && reply_mode == MODEST_TNY_MSG_REPLY_MODE_ALL &&
703 old_reply_to && old_from && strcmp (old_from, old_reply_to) != 0)
704 new_to = g_strjoin (",", old_reply_to, old_from, NULL);
706 /* otherwise use either Reply-To: (preferred) or From: */
707 new_to = g_strdup (old_reply_to ? old_reply_to : old_from);
709 /* in case of ReplyAll, we need to add the Recipients in the old To: */
710 if (reply_mode == MODEST_TNY_MSG_REPLY_MODE_ALL) {
711 const gchar *old_to = tny_header_get_to (header);
713 g_warning ("%s: no To: address found in source mail",
716 /* append the old To: */
717 gchar *tmp = g_strjoin (",", new_to, old_to, NULL);
722 /* remove duplicate entries */
723 gchar *tmp = modest_text_utils_remove_duplicate_addresses (new_to);
727 /* now, strip me (the new From:) from the new_to, but only if
728 * there are >1 addresses there */
729 if (count_addresses (new_to) > 1) {
730 gchar *tmp = modest_text_utils_remove_address (new_to, from);
740 /* get the new Cc:, based on the old header,
741 * result is newly allocated or NULL in case of error */
743 get_new_cc (TnyHeader *header, const gchar* from)
747 old_cc = tny_header_get_cc (header);
751 /* remove me (the new From:) from the Cc: list */
752 return modest_text_utils_remove_address (old_cc, from);
757 modest_tny_msg_create_reply_msg (TnyMsg *msg,
760 const gchar *signature,
761 ModestTnyMsgReplyType reply_type,
762 ModestTnyMsgReplyMode reply_mode)
764 TnyMsg *new_msg = NULL;
765 TnyHeader *new_header;
766 gchar *new_to = NULL;
767 TnyList *parts = NULL;
768 GList *attachments_list = NULL;
770 g_return_val_if_fail (msg && TNY_IS_MSG(msg), NULL);
772 /* Add attachments */
774 parts = TNY_LIST (tny_simple_list_new());
775 tny_mime_part_get_parts (TNY_MIME_PART (msg), parts);
776 tny_list_foreach (parts, add_if_attachment, &attachments_list);
779 new_msg = create_reply_forward_mail (msg, header, from, signature, TRUE, reply_type,
781 if (attachments_list) {
782 g_list_foreach (attachments_list, (GFunc) g_object_unref, NULL);
783 g_list_free (attachments_list);
786 g_object_unref (G_OBJECT (parts));
788 /* Fill the header */
790 g_object_ref (header);
792 header = tny_msg_get_header (msg);
795 new_header = tny_msg_get_header(new_msg);
796 new_to = get_new_to (msg, header, from, reply_mode);
798 g_warning ("%s: failed to get new To:", __FUNCTION__);
800 tny_header_set_to (new_header, new_to);
804 if (reply_mode == MODEST_TNY_MSG_REPLY_MODE_ALL) {
805 gchar *new_cc = get_new_cc (header, from);
807 tny_header_set_cc (new_header, new_cc);
813 g_object_unref (G_OBJECT (new_header));
814 g_object_unref (G_OBJECT (header));
821 is_ascii(const gchar *s)
826 if (s[0] & 128 || s[0] < 32)
834 get_content_type(const gchar *s)
838 type = g_string_new("text/plain");
840 if (g_utf8_validate(s, -1, NULL)) {
841 g_string_append(type, "; charset=\"utf-8\"");
843 /* it should be impossible to reach this, but better safe than sorry */
844 g_warning("invalid utf8 in message");
845 g_string_append(type, "; charset=\"latin1\"");
848 return g_string_free(type, FALSE);