63dfd02a377fa58aceff48233b67b6fc4c7dd258
[modest] / src / modest-tny-msg.c
1 /* Copyright (c) 2006, Nokia Corporation
2  * All rights reserved.
3  *
4  * Redistribution and use in source and binary forms, with or without
5  * modification, are permitted provided that the following conditions are
6  * met:
7  *
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.
16  *
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.
28  */
29
30 #include <string.h>
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
44 #ifdef HAVE_CONFIG_H
45 #include <config.h>
46 #endif /*HAVE_CONFIG_H */
47
48 #include <modest-tny-msg.h>
49 #include "modest-text-utils.h"
50
51 static TnyMimePart * add_body_part (TnyMsg *msg, const gchar *body,
52                                     const gchar *content_type);
53 static TnyMimePart * add_html_body_part (TnyMsg *msg, const gchar *body);
54 static void add_attachments (TnyMimePart *part, GList *attachments_list, gboolean add_inline);
55 static void add_images (TnyMsg *msg, GList *attachments_list);
56 static char * get_content_type(const gchar *s);
57 static gboolean is_ascii(const gchar *s);
58
59
60 TnyMsg*
61 modest_tny_msg_new (const gchar* mailto, const gchar* from, const gchar *cc,
62                     const gchar *bcc, const gchar* subject, const gchar *body,
63                     GList *attachments)
64 {
65         TnyMsg *new_msg;
66         TnyHeader *header;
67         gchar *content_type;
68         
69         /* Create new msg */
70         new_msg = modest_formatter_create_message (NULL, TRUE, (attachments != NULL), FALSE);
71         header  = tny_msg_get_header (new_msg);
72         
73         if ((from != NULL) && (strlen(from) > 0)) {
74                 tny_header_set_from (TNY_HEADER (header), from);
75                 tny_header_set_replyto (TNY_HEADER (header), from);
76         }
77         if ((mailto != NULL) && (strlen(mailto) > 0)) 
78                 tny_header_set_to (TNY_HEADER (header), mailto);
79         if ((cc != NULL) && (strlen(cc) > 0)) 
80                 tny_header_set_cc (TNY_HEADER (header), cc);
81         if ((bcc != NULL) && (strlen(bcc) > 0)) 
82                 tny_header_set_bcc (TNY_HEADER (header), bcc);
83         
84         if ((subject != NULL) && (strlen(subject) > 0)) 
85                 tny_header_set_subject (TNY_HEADER (header), subject);
86
87         content_type = get_content_type(body);
88
89         /* set modest as the X-Mailer
90          * we could this in the platform factory, but then the header
91          * would show up before all the others.
92          */
93         tny_mime_part_set_header_pair (TNY_MIME_PART (new_msg), "X-Mailer", "Modest "
94                                        VERSION);
95         
96         /* Add the body of the new mail */
97         /* This is needed even if body is NULL or empty. */
98         add_body_part (new_msg, body, content_type);
99         g_free (content_type);
100                        
101         /* Add attachments */
102         if (attachments)
103                 add_attachments (TNY_MIME_PART (new_msg), attachments, FALSE);
104         if (header)
105                 g_object_unref(header);
106
107         return new_msg;
108 }
109
110 TnyMsg*
111 modest_tny_msg_new_html_plain (const gchar* mailto, const gchar* from, const gchar *cc,
112                                const gchar *bcc, const gchar* subject, 
113                                const gchar *html_body, const gchar *plain_body,
114                                GList *attachments, GList *images)
115 {
116         TnyMsg *new_msg;
117         TnyHeader *header;
118         gchar *content_type;
119         
120         /* Create new msg */
121         new_msg = modest_formatter_create_message (NULL, FALSE, (attachments != NULL), (images != NULL));
122         header  = tny_msg_get_header (new_msg);
123         
124         if ((from != NULL) && (strlen(from) > 0)) {
125                 tny_header_set_from (TNY_HEADER (header), from);
126                 tny_header_set_replyto (TNY_HEADER (header), from);
127         }
128         if ((mailto != NULL) && (strlen(mailto) > 0)) 
129                 tny_header_set_to (TNY_HEADER (header), mailto);
130         if ((cc != NULL) && (strlen(cc) > 0)) 
131                 tny_header_set_cc (TNY_HEADER (header), cc);
132         if ((bcc != NULL) && (strlen(bcc) > 0)) 
133                 tny_header_set_bcc (TNY_HEADER (header), bcc);
134         
135         if ((subject != NULL) && (strlen(subject) > 0)) 
136                 tny_header_set_subject (TNY_HEADER (header), subject);
137
138         content_type = get_content_type(plain_body);
139         
140         /* set modest as the X-Mailer
141          * we could this in the platform factory, but then the header
142          * would show up before all the others.
143          */
144         tny_mime_part_set_header_pair (TNY_MIME_PART (new_msg), "X-Mailer", "Modest "
145                                        VERSION);
146
147         /* Add the body of the new mail */      
148         add_body_part (new_msg, plain_body, content_type);
149         add_html_body_part (new_msg, html_body);
150         g_free (content_type);
151                        
152         /* Add attachments */
153         add_attachments (TNY_MIME_PART (new_msg), attachments, FALSE);
154         add_images (new_msg, images);
155         if (header)
156                 g_object_unref(header);
157
158         return new_msg;
159 }
160
161
162 /* FIXME: this func copy from modest-mail-operation: refactor */
163 static TnyMimePart *
164 add_body_part (TnyMsg *msg, 
165                const gchar *body,
166                const gchar *content_type)
167 {
168         TnyMimePart *text_body_part = NULL;
169         TnyStream *text_body_stream;
170
171         /* Create the stream */
172         text_body_stream = TNY_STREAM (tny_camel_stream_new
173                                        (camel_stream_mem_new_with_buffer
174                                         (body, (body ? strlen(body) : 0))));
175
176         text_body_part = modest_formatter_create_body_part (NULL, msg);
177
178         /* Construct MIME part */
179         tny_stream_reset (text_body_stream);
180         tny_mime_part_construct_from_stream (text_body_part,
181                                              text_body_stream,
182                                              content_type);
183         tny_stream_reset (text_body_stream);
184
185         g_object_unref (G_OBJECT(text_body_part));
186
187         /* Clean */
188         g_object_unref (text_body_stream);
189
190         return text_body_part;
191 }
192
193 static TnyMimePart *
194 add_html_body_part (TnyMsg *msg, 
195                     const gchar *body)
196 {
197         TnyMimePart *html_body_part = NULL;
198         TnyStream *html_body_stream;
199
200         /* Create the stream */
201         html_body_stream = TNY_STREAM (tny_camel_stream_new
202                                        (camel_stream_mem_new_with_buffer
203                                         (body, strlen(body))));
204
205         /* Create body part if needed */
206         html_body_part = modest_formatter_create_body_part (NULL, msg);
207
208         /* Construct MIME part */
209         tny_stream_reset (html_body_stream);
210         tny_mime_part_construct_from_stream (html_body_part,
211                                              html_body_stream,
212                                              "text/html; charset=utf-8");
213         tny_stream_reset (html_body_stream);
214
215         g_object_unref (G_OBJECT(html_body_part));
216
217         /* Clean */
218         g_object_unref (html_body_stream);
219
220         return html_body_part;
221 }
222
223 static TnyMimePart *
224 copy_mime_part (TnyMimePart *part)
225 {
226         TnyMimePart *result = NULL;
227         const gchar *attachment_content_type;
228         const gchar *attachment_filename;
229         const gchar *attachment_cid;
230         TnyList *parts;
231         TnyIterator *iterator;
232         TnyStream *attachment_stream;
233
234         if (TNY_IS_MSG (part)) {
235                 g_object_ref (part);
236                 return part;
237         }
238
239         result = tny_platform_factory_new_mime_part (
240                 modest_runtime_get_platform_factory());
241
242         attachment_content_type = tny_mime_part_get_content_type (part);
243
244         /* get mime part headers */
245         attachment_filename = tny_mime_part_get_filename (part);
246         attachment_cid = tny_mime_part_get_content_id (part);
247         
248         /* fill the stream */
249         attachment_stream = tny_mime_part_get_stream (part);
250         tny_stream_reset (attachment_stream);
251         tny_mime_part_construct_from_stream (result,
252                                              attachment_stream,
253                                              attachment_content_type);
254         tny_stream_reset (attachment_stream);
255         
256         /* set other mime part fields */
257         tny_mime_part_set_filename (result, attachment_filename);
258         tny_mime_part_set_content_id (result, attachment_cid);
259
260         /* copy subparts */
261         parts = tny_simple_list_new ();
262         tny_mime_part_get_parts (part, parts);
263         iterator = tny_list_create_iterator (parts);
264         while (!tny_iterator_is_done (iterator)) {
265                 TnyMimePart *subpart = TNY_MIME_PART (tny_iterator_get_current (iterator));
266                 if (subpart) {
267                         TnyMimePart *subpart_copy = copy_mime_part (subpart);
268                         tny_mime_part_add_part (result, subpart_copy);
269                         g_object_unref (subpart);
270                 }
271
272                 tny_iterator_next (iterator);
273         }
274         g_object_unref (iterator);
275         g_object_unref (parts);
276         g_object_unref (attachment_stream);
277
278         return result;
279 }
280
281 static void
282 add_attachments (TnyMimePart *part, GList *attachments_list, gboolean add_inline)
283 {
284         GList *pos;
285         TnyMimePart *attachment_part, *old_attachment;
286
287         for (pos = (GList *)attachments_list; pos; pos = pos->next) {
288
289                 old_attachment = pos->data;
290                 if (!tny_mime_part_is_purged (old_attachment)) {
291                         attachment_part = copy_mime_part (old_attachment);
292                         tny_mime_part_add_part (TNY_MIME_PART (part), attachment_part);
293                         tny_mime_part_set_header_pair (attachment_part, "Content-Disposition", 
294                                                        add_inline?"inline":"attachment");
295                         g_object_unref (attachment_part);
296                 }
297         }
298 }
299
300 static void
301 add_images (TnyMsg *msg, GList *images_list)
302 {
303         TnyMimePart *related_part = NULL;
304         const gchar *content_type;
305
306         content_type = tny_mime_part_get_content_type (TNY_MIME_PART (msg));
307
308         if ((content_type != NULL) && !strcasecmp (content_type, "multipart/related")) {
309                 related_part = g_object_ref (msg);
310         } else if ((content_type != NULL) && !strcasecmp (content_type, "multipart/mixed")) {
311                 TnyList *parts = TNY_LIST (tny_simple_list_new ());
312                 TnyIterator *iter = NULL;
313                 tny_mime_part_get_parts (TNY_MIME_PART (msg), parts);
314                 iter = tny_list_create_iterator (parts);
315
316                 while (!tny_iterator_is_done (iter)) {
317                         TnyMimePart *part = TNY_MIME_PART (tny_iterator_get_current (iter));
318                         if (part && !g_strcasecmp (tny_mime_part_get_content_type (part), "multipart/related")) {
319                                 related_part = part;
320                                 break;
321                         } else {
322                                 g_object_unref (part);
323                         }
324                         tny_iterator_next (iter);
325                 }
326                 g_object_unref (iter);
327                 g_object_unref (parts);
328         }
329
330         if (related_part != NULL) {
331                 /* TODO: attach images in their proper place */
332                 add_attachments (related_part, images_list, TRUE);
333         }
334 }
335
336
337 gchar * 
338 modest_tny_msg_get_body (TnyMsg *msg, gboolean want_html, gboolean *is_html)
339 {
340         TnyStream *stream;
341         TnyMimePart *body;
342         GtkTextBuffer *buf;
343         GtkTextIter start, end;
344         gchar *to_quote;
345         gboolean result_was_html = TRUE;
346
347         g_return_val_if_fail (msg && TNY_IS_MSG(msg), NULL);
348         
349         body = modest_tny_msg_find_body_part(msg, want_html);
350         if (!body)
351                 return NULL;
352
353         buf = gtk_text_buffer_new (NULL);
354         stream = TNY_STREAM (tny_gtk_text_buffer_stream_new (buf));
355         tny_stream_reset (stream);
356         tny_mime_part_decode_to_stream (body, stream);
357         tny_stream_reset (stream);
358         
359         gtk_text_buffer_get_bounds (buf, &start, &end);
360         to_quote = gtk_text_buffer_get_text (buf, &start, &end, FALSE);
361         if (tny_mime_part_content_type_is (body, "text/plain")) {
362                 gchar *to_quote_converted = modest_text_utils_convert_to_html (to_quote);
363                 g_free (to_quote);
364                 to_quote = to_quote_converted;
365                 result_was_html = FALSE;
366         }
367
368         g_object_unref (buf);
369         g_object_unref (G_OBJECT(stream));
370         g_object_unref (G_OBJECT(body));
371
372         if (is_html != NULL)
373                 *is_html = result_was_html;
374
375         return to_quote;
376 }
377
378
379 TnyMimePart*
380 modest_tny_msg_find_body_part_from_mime_part (TnyMimePart *msg, gboolean want_html)
381 {
382         const gchar *desired_mime_type = want_html ? "text/html" : "text/plain";
383         TnyMimePart *part = NULL;
384         TnyList *parts = NULL;
385         TnyIterator *iter = NULL;
386         
387         if (!msg)
388                 return NULL;
389
390         parts = TNY_LIST (tny_simple_list_new());
391         tny_mime_part_get_parts (TNY_MIME_PART (msg), parts);
392
393         iter  = tny_list_create_iterator(parts);
394
395         /* no parts? assume it's single-part message */
396         if (tny_iterator_is_done(iter)) {
397                 g_object_unref (G_OBJECT(iter));
398                 return TNY_MIME_PART (g_object_ref(G_OBJECT(msg)));
399         } else {
400                 do {
401                         gchar *content_type = NULL;
402                         
403                         part = TNY_MIME_PART(tny_iterator_get_current (iter));
404
405                         if (!part) {
406                                 g_warning ("%s: not a valid mime part", __FUNCTION__);
407                                 continue;
408                         }
409
410                         /* it's a message --> ignore */
411                         if (part && TNY_IS_MSG (part)) {
412                                 g_object_unref (part);
413                                 tny_iterator_next (iter);
414                                 continue;
415                         }
416                         
417
418                         /* we need to strdown the content type, because
419                          * tny_mime_part_has_content_type does not do it...
420                          */
421                         content_type = g_ascii_strdown (tny_mime_part_get_content_type (part), -1);
422
423                         if (g_str_has_prefix (content_type, desired_mime_type) && !tny_mime_part_is_attachment (part)) {
424                                 /* we found the desired mime-type! */
425                                 g_free (content_type);
426                                 break;
427
428                         } else  if (g_str_has_prefix(content_type, "multipart")) {
429
430                                 /* multipart? recurse! */
431                                 g_object_unref (part);
432                                 g_free (content_type);
433                                 part = modest_tny_msg_find_body_part_from_mime_part (part, want_html);
434                                 if (part)
435                                         break;
436                         } else
437                                 g_free (content_type);
438                         
439                         if (part) {
440                                 g_object_unref (G_OBJECT(part));
441                                 part = NULL;
442                         }
443                         
444                         tny_iterator_next (iter);
445                         
446                 } while (!tny_iterator_is_done(iter));
447         }
448         
449         g_object_unref (G_OBJECT(iter));
450         g_object_unref (G_OBJECT(parts));
451
452         /* if were trying to find an HTML part and couldn't find it,
453          * try to find a text/plain part instead
454          */
455         if (!part && want_html) 
456                 return modest_tny_msg_find_body_part_from_mime_part (msg, FALSE);
457         else
458                 return part; /* this maybe NULL, this is not an error; some message just don't have a body
459                               * part */
460 }
461
462
463 TnyMimePart*
464 modest_tny_msg_find_body_part (TnyMsg *msg, gboolean want_html)
465 {
466         g_return_val_if_fail (msg && TNY_IS_MSG(msg), NULL);
467         
468         return modest_tny_msg_find_body_part_from_mime_part (TNY_MIME_PART(msg),
469                                                              want_html);
470 }
471
472
473 #define MODEST_TNY_MSG_PARENT_UID "parent-uid"
474
475 static TnyMsg *
476 create_reply_forward_mail (TnyMsg *msg, TnyHeader *header, const gchar *from,
477                            const gchar *signature, gboolean is_reply,
478                            guint type /*ignored*/, GList *attachments)
479 {
480         TnyMsg *new_msg;
481         TnyHeader *new_header;
482         gchar *new_subject;
483         TnyMimePart *body = NULL;
484         ModestFormatter *formatter;
485         gchar *subject_prefix;
486         gboolean no_text_part;
487         
488         if (header)
489                 g_object_ref (header);
490         else
491                 header = tny_msg_get_header (msg);
492
493         /* Get body from original msg. Always look for the text/plain
494            part of the message to create the reply/forwarded mail */
495         if (msg != NULL)
496                 body   = modest_tny_msg_find_body_part (msg, FALSE);
497         
498         if (modest_conf_get_bool (modest_runtime_get_conf (), MODEST_CONF_PREFER_FORMATTED_TEXT,
499                                   NULL))
500                 formatter = modest_formatter_new ("text/html", signature);
501         else
502                 formatter = modest_formatter_new ("text/plain", signature);
503         
504
505         /* if we don't have a text-part */
506         no_text_part = (!body) || (strcmp (tny_mime_part_get_content_type (body), "text/html")==0);
507         
508         /* when we're reply, include the text part if we have it, or nothing otherwise. */
509         if (is_reply)
510                 new_msg = modest_formatter_quote  (formatter, no_text_part ? NULL: body, header,
511                                                     attachments);
512         else {
513                 /* for attachements; inline if there is a text part, and include the
514                  * full old mail if there was none */
515                 if (no_text_part) 
516                         new_msg = modest_formatter_attach (formatter, msg, header);
517                 else 
518                         new_msg = modest_formatter_inline  (formatter, body, header,
519                                                             attachments);
520         }
521         
522         g_object_unref (G_OBJECT(formatter));
523         if (body)
524                 g_object_unref (G_OBJECT(body));
525         
526         /* Fill the header */
527         new_header = tny_msg_get_header (new_msg);      
528         tny_header_set_from (new_header, from);
529         tny_header_set_replyto (new_header, from);
530
531         /* Change the subject */
532         if (is_reply)
533                 subject_prefix = g_strconcat (_("mail_va_re"), ":", NULL);
534         else
535                 subject_prefix = g_strconcat (_("mail_va_fw"), ":", NULL);
536         new_subject =
537                 (gchar *) modest_text_utils_derived_subject (tny_header_get_subject(header),
538                                                              subject_prefix);
539         g_free (subject_prefix);
540         tny_header_set_subject (new_header, (const gchar *) new_subject);
541         g_free (new_subject);
542         
543         /* get the parent uid, and set it as a gobject property on the new msg */
544         if (new_msg) {
545                 gchar* parent_uid = modest_tny_folder_get_header_unique_id (header);
546                 g_object_set_data_full (G_OBJECT(new_msg), MODEST_TNY_MSG_PARENT_UID,
547                                         parent_uid, g_free);
548         }
549
550         /* set modest as the X-Mailer
551          * we could this in the platform factory, but then the header
552          * would show up before all the others.
553          */
554         tny_mime_part_set_header_pair (TNY_MIME_PART (msg), "X-Mailer", "Modest "
555                                        VERSION);
556
557         /* Clean */
558         g_object_unref (G_OBJECT (new_header));
559         g_object_unref (G_OBJECT (header));
560         /* ugly to unref it here instead of in the calling func */
561
562         return new_msg;
563 }
564
565 const gchar*
566 modest_tny_msg_get_parent_uid (TnyMsg *msg)
567 {
568         g_return_val_if_fail (msg && TNY_IS_MSG(msg), NULL);
569         
570         return g_object_get_data (G_OBJECT(msg), MODEST_TNY_MSG_PARENT_UID);
571 }
572
573
574
575 static void
576 add_if_attachment (gpointer data, gpointer user_data)
577 {
578         TnyMimePart *part;
579         GList **attachments_list;
580
581         part = TNY_MIME_PART (data);
582         attachments_list = ((GList **) user_data);
583
584         if ((tny_mime_part_is_attachment (part))||(TNY_IS_MSG (part))) {
585                 *attachments_list = g_list_prepend (*attachments_list, part);
586                 g_object_ref (part);
587         }
588 }
589
590 TnyMsg* 
591 modest_tny_msg_create_forward_msg (TnyMsg *msg, 
592                                    const gchar *from,
593                                    const gchar *signature,
594                                    ModestTnyMsgForwardType forward_type)
595 {
596         TnyMsg *new_msg;
597         TnyList *parts = NULL;
598         GList *attachments_list = NULL;
599
600         g_return_val_if_fail (msg && TNY_IS_MSG(msg), NULL);
601         
602         /* Add attachments */
603         parts = TNY_LIST (tny_simple_list_new());
604         tny_mime_part_get_parts (TNY_MIME_PART (msg), parts);
605         tny_list_foreach (parts, add_if_attachment, &attachments_list);
606
607         new_msg = create_reply_forward_mail (msg, NULL, from, signature, FALSE, forward_type,
608                                              attachments_list);
609         add_attachments (TNY_MIME_PART (new_msg), attachments_list, FALSE);
610
611         /* Clean */
612         if (attachments_list)
613                 g_list_free (attachments_list);
614         g_object_unref (G_OBJECT (parts));
615
616         return new_msg;
617 }
618
619 TnyMsg* 
620 modest_tny_msg_create_reply_msg (TnyMsg *msg,
621                                  TnyHeader *header,
622                                  const gchar *from,
623                                  const gchar *signature,
624                                  ModestTnyMsgReplyType reply_type,
625                                  ModestTnyMsgReplyMode reply_mode)
626 {
627         TnyMsg *new_msg = NULL;
628         TnyHeader *new_header;
629         const gchar* reply_to;
630         gchar *new_cc = NULL;
631         const gchar *cc = NULL, *bcc = NULL;
632         GString *tmp = NULL;
633         TnyList *parts = NULL;
634         GList *attachments_list = NULL;
635
636         g_return_val_if_fail (msg && TNY_IS_MSG(msg), NULL);
637         
638         /* Add attachments */
639         if (msg != NULL) {
640                 parts = TNY_LIST (tny_simple_list_new());
641                 tny_mime_part_get_parts (TNY_MIME_PART (msg), parts);
642                 tny_list_foreach (parts, add_if_attachment, &attachments_list);
643         }
644
645         new_msg = create_reply_forward_mail (msg, header, from, signature, TRUE, reply_type,
646                                              attachments_list);
647         if (attachments_list) {
648                 g_list_foreach (attachments_list, (GFunc) g_object_unref, NULL);
649                 g_list_free (attachments_list);
650         }
651         if (parts)
652                 g_object_unref (G_OBJECT (parts));
653
654         /* Fill the header */
655         if (header)
656                 g_object_ref (header);
657         else
658                 header = tny_msg_get_header (msg);
659
660         new_header = tny_msg_get_header (new_msg);
661         reply_to = tny_header_get_replyto (header);
662
663         if (reply_to)
664                 tny_header_set_to (new_header, reply_to);
665         else
666                 tny_header_set_to (new_header, tny_header_get_from (header));
667
668         switch (reply_mode) {
669         case MODEST_TNY_MSG_REPLY_MODE_SENDER:
670                 /* Do not fill neither cc nor bcc */
671                 break;
672         case MODEST_TNY_MSG_REPLY_MODE_LIST:
673                 /* TODO */
674                 break;
675         case MODEST_TNY_MSG_REPLY_MODE_ALL:
676                 /* Concatenate to, cc and bcc */
677                 cc = tny_header_get_cc (header);
678                 bcc = tny_header_get_bcc (header);
679
680                 tmp = g_string_new (tny_header_get_to (header));
681                 if (cc)
682                         g_string_append_printf (tmp, ",%s",cc);
683                 if (bcc)
684                         g_string_append_printf (tmp, ",%s",bcc);
685
686                /* Remove my own address from the cc list. TODO:
687                   remove also the To: of the new message, needed due
688                   to the new reply_to feature */
689                 new_cc = (gchar *)
690                         modest_text_utils_remove_address ((const gchar *) tmp->str,
691                                                           from);
692                 /* FIXME: remove also the mails from the new To: */
693                 tny_header_set_cc (new_header, new_cc);
694
695                 /* Clean */
696                 g_string_free (tmp, TRUE);
697                 g_free (new_cc);
698                 break;
699         }
700
701         /* Clean */
702         g_object_unref (G_OBJECT (new_header));
703         g_object_unref (G_OBJECT (header));
704
705         return new_msg;
706 }
707
708
709 static gboolean
710 is_ascii(const gchar *s)
711 {
712         if (!s)
713                 return TRUE;
714         while (s[0]) {
715                 if (s[0] & 128 || s[0] < 32)
716                         return FALSE;
717                 s++;
718         }
719         return TRUE;
720 }
721
722 static char *
723 get_content_type(const gchar *s)
724 {
725         GString *type;
726         
727         type = g_string_new("text/plain");
728         if (!is_ascii(s)) {
729                 if (g_utf8_validate(s, -1, NULL)) {
730                         g_string_append(type, "; charset=\"utf-8\"");
731                 } else {
732                         /* it should be impossible to reach this, but better safe than sorry */
733                         g_warning("invalid utf8 in message");
734                         g_string_append(type, "; charset=\"latin1\"");
735                 }
736         }
737         return g_string_free(type, FALSE);
738 }