Added support for setting References and In-Reply-To: mime fields
[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-defs.h>
37 #include "modest-formatter.h"
38 #include <tny-camel-mem-stream.h>
39 #include <tny-camel-mime-part.h>
40 #include <glib/gprintf.h>
41 #include <modest-tny-folder.h>
42 #include "modest-tny-mime-part.h"
43 #include <modest-error.h>
44
45
46 #ifdef HAVE_CONFIG_H
47 #include <config.h>
48 #endif /*HAVE_CONFIG_H */
49
50 #include <modest-tny-msg.h>
51 #include "modest-text-utils.h"
52
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 gint add_attachments (TnyMimePart *part, GList *attachments_list, gboolean add_inline, GError **err);
57 static void add_images (TnyMsg *msg, GList *attachments_list, GError **err);
58 static char * get_content_type(const gchar *s);
59 static gboolean is_ascii(const gchar *s);
60
61
62 TnyMsg*
63 modest_tny_msg_new (const gchar* mailto, const gchar* from, const gchar *cc,
64                     const gchar *bcc, const gchar* subject, 
65                     const gchar *references, const gchar *in_reply_to,
66                     const gchar *body,
67                     GList *attachments, gint *attached, GError **err)
68 {
69         TnyMsg *new_msg;
70         TnyHeader *header;
71         gchar *content_type;
72         gint tmp_attached = 0;
73         
74         /* Create new msg */
75         new_msg = modest_formatter_create_message (NULL, TRUE, (attachments != NULL), FALSE);
76         header  = tny_msg_get_header (new_msg);
77         
78         if ((from != NULL) && (strlen(from) > 0)) {
79                 tny_header_set_from (TNY_HEADER (header), from);
80                 tny_header_set_replyto (TNY_HEADER (header), from);
81         }
82         if ((mailto != NULL) && (strlen(mailto) > 0)) {
83                 gchar *removed_to = modest_text_utils_remove_duplicate_addresses (mailto);
84                 tny_header_set_to (TNY_HEADER (header), removed_to);
85                 g_free (removed_to);
86         }
87         if ((cc != NULL) && (strlen(cc) > 0)) 
88                 tny_header_set_cc (TNY_HEADER (header), cc);
89         if ((bcc != NULL) && (strlen(bcc) > 0)) 
90                 tny_header_set_bcc (TNY_HEADER (header), bcc);
91         
92         if ((subject != NULL) && (strlen(subject) > 0)) 
93                 tny_header_set_subject (TNY_HEADER (header), subject);
94
95         content_type = get_content_type(body);
96
97         /* set modest as the X-Mailer
98          * we could this in the platform factory, but then the header
99          * would show up before all the others.
100          */
101         tny_mime_part_set_header_pair (TNY_MIME_PART (new_msg), "X-Mailer", "Modest "
102                                        VERSION);
103
104         if (references)
105                 tny_mime_part_set_header_pair (TNY_MIME_PART (new_msg), "References", references);
106
107         if (in_reply_to)
108                 tny_mime_part_set_header_pair (TNY_MIME_PART (new_msg), "In-Reply-To", in_reply_to);
109         
110         /* Add the body of the new mail */
111         /* This is needed even if body is NULL or empty. */
112         add_body_part (new_msg, body, content_type);
113         g_free (content_type);
114                        
115         /* Add attachments */
116         if (attachments)
117                 tmp_attached = add_attachments (TNY_MIME_PART (new_msg), attachments, FALSE, err);
118         if (attached)
119                 *attached = tmp_attached;
120         if (header)
121                 g_object_unref(header);
122
123         return new_msg;
124 }
125
126 TnyMsg*
127 modest_tny_msg_new_html_plain (const gchar* mailto, const gchar* from, const gchar *cc,
128                                const gchar *bcc, const gchar* subject, 
129                                const gchar *references, const gchar *in_reply_to,
130                                const gchar *html_body, const gchar *plain_body,
131                                GList *attachments, GList *images, gint *attached, GError **err)
132 {
133         TnyMsg *new_msg;
134         TnyHeader *header;
135         gchar *content_type;
136         gint tmp_attached;
137         
138         /* Create new msg */
139         new_msg = modest_formatter_create_message (NULL, FALSE, (attachments != NULL), (images != NULL));
140         header  = tny_msg_get_header (new_msg);
141         
142         if ((from != NULL) && (strlen(from) > 0)) {
143                 tny_header_set_from (TNY_HEADER (header), from);
144                 tny_header_set_replyto (TNY_HEADER (header), from);
145         }
146         if ((mailto != NULL) && (strlen(mailto) > 0)) 
147                 tny_header_set_to (TNY_HEADER (header), mailto);
148         if ((cc != NULL) && (strlen(cc) > 0)) 
149                 tny_header_set_cc (TNY_HEADER (header), cc);
150         if ((bcc != NULL) && (strlen(bcc) > 0)) 
151                 tny_header_set_bcc (TNY_HEADER (header), bcc);
152         
153         if ((subject != NULL) && (strlen(subject) > 0)) 
154                 tny_header_set_subject (TNY_HEADER (header), subject);
155
156         content_type = get_content_type(plain_body);
157         
158         /* set modest as the X-Mailer
159          * we could this in the platform factory, but then the header
160          * would show up before all the others.
161          */
162         tny_mime_part_set_header_pair (TNY_MIME_PART (new_msg), "X-Mailer", "Modest "
163                                        VERSION);
164
165         if (references)
166                 tny_mime_part_set_header_pair (TNY_MIME_PART (new_msg), "References", references);
167
168         if (in_reply_to)
169                 tny_mime_part_set_header_pair (TNY_MIME_PART (new_msg), "In-Reply-To", in_reply_to);
170         
171         /* Add the body of the new mail */      
172         add_body_part (new_msg, plain_body, content_type);
173         add_html_body_part (new_msg, html_body);
174         g_free (content_type);
175                        
176         /* Add attachments */
177         tmp_attached = add_attachments (TNY_MIME_PART (new_msg), attachments, FALSE, err);
178         if (attached)
179                 *attached = tmp_attached;
180         add_images (new_msg, images, err);
181         if (header)
182                 g_object_unref(header);
183
184         return new_msg;
185 }
186
187
188 /* FIXME: this func copy from modest-mail-operation: refactor */
189 static TnyMimePart *
190 add_body_part (TnyMsg *msg, 
191                const gchar *body,
192                const gchar *content_type)
193 {
194         TnyMimePart *text_body_part = NULL;
195         TnyStream *text_body_stream;
196
197         /* Create the stream */
198         text_body_stream = TNY_STREAM (tny_camel_mem_stream_new_with_buffer
199                                         (body, (body ? strlen(body) : 0)));
200
201         text_body_part = modest_formatter_create_body_part (NULL, msg);
202
203         /* Construct MIME part */
204         tny_stream_reset (text_body_stream);
205         tny_mime_part_construct (text_body_part,
206                                  text_body_stream,
207                                  content_type, "7bit");
208         tny_stream_reset (text_body_stream);
209
210         g_object_unref (G_OBJECT(text_body_part));
211
212         /* Clean */
213         g_object_unref (text_body_stream);
214
215         return text_body_part;
216 }
217
218 static TnyMimePart *
219 add_html_body_part (TnyMsg *msg, 
220                     const gchar *body)
221 {
222         TnyMimePart *html_body_part = NULL;
223         TnyStream *html_body_stream;
224
225         /* Create the stream */
226         html_body_stream = TNY_STREAM (tny_camel_mem_stream_new_with_buffer
227                                         (body, strlen(body)));
228
229         /* Create body part if needed */
230         html_body_part = modest_formatter_create_body_part (NULL, msg);
231
232         /* Construct MIME part */
233         tny_stream_reset (html_body_stream);
234         tny_mime_part_construct (html_body_part,
235                                  html_body_stream,
236                                  "text/html; charset=utf-8", 
237                                  "7bit"); /* Sometimes it might be needed 
238                                              to make this one a 8bit! */
239         tny_stream_reset (html_body_stream);
240
241         g_object_unref (G_OBJECT(html_body_part));
242
243         /* Clean */
244         g_object_unref (html_body_stream);
245
246         return html_body_part;
247 }
248
249 static TnyMimePart *
250 copy_mime_part (TnyMimePart *part, GError **err)
251 {
252         TnyMimePart *result = NULL;
253         const gchar *attachment_content_type;
254         const gchar *attachment_filename;
255         const gchar *attachment_cid;
256         TnyList *parts;
257         TnyIterator *iterator;
258         TnyStream *attachment_stream;
259         const gchar *enc;
260         gint ret;
261         
262         if (TNY_IS_MSG (part)) {
263                 g_object_ref (part);
264                 return part;
265         }
266
267         result = tny_platform_factory_new_mime_part (
268                 modest_runtime_get_platform_factory());
269
270         attachment_content_type = tny_mime_part_get_content_type (part);
271
272         /* get mime part headers */
273         attachment_filename = tny_mime_part_get_filename (part);
274         attachment_cid = tny_mime_part_get_content_id (part);
275         
276         /* fill the stream */
277         attachment_stream = tny_mime_part_get_decoded_stream (part);
278         enc = tny_mime_part_get_transfer_encoding (part);
279         if (attachment_stream == NULL) {
280                 if (err != NULL && *err == NULL)
281                         g_set_error (err, MODEST_MAIL_OPERATION_ERROR, MODEST_MAIL_OPERATION_ERROR_FILE_IO, _("TODO: couldn't retrieve attachment"));
282                 g_object_unref (result);
283                 return NULL;
284         } else {
285                 ret = tny_stream_reset (attachment_stream);
286                 ret = tny_mime_part_construct (result,
287                                                attachment_stream,
288                                                attachment_content_type, 
289                                                enc);
290                 ret = tny_stream_reset (attachment_stream);
291         }
292         
293         /* set other mime part fields */
294         tny_mime_part_set_filename (result, attachment_filename);
295         tny_mime_part_set_content_id (result, attachment_cid);
296
297         /* copy subparts */
298         parts = tny_simple_list_new ();
299         tny_mime_part_get_parts (part, parts);
300         iterator = tny_list_create_iterator (parts);
301         while (!tny_iterator_is_done (iterator)) {
302                 TnyMimePart *subpart = TNY_MIME_PART (tny_iterator_get_current (iterator));
303                 if (subpart) {
304                         const gchar *subpart_cid;
305                         TnyMimePart *subpart_copy = copy_mime_part (subpart, err);
306                         if (subpart_copy != NULL) {
307                                 subpart_cid = tny_mime_part_get_content_id (subpart);
308                                 tny_mime_part_add_part (result, subpart_copy);
309                                 if (subpart_cid)
310                                         tny_mime_part_set_content_id (result, subpart_cid);
311                                 g_object_unref (subpart_copy);
312                         }
313                         g_object_unref (subpart);
314                 }
315
316                 tny_iterator_next (iterator);
317         }
318         g_object_unref (iterator);
319         g_object_unref (parts);
320         g_object_unref (attachment_stream);
321
322         return result;
323 }
324
325 static gint
326 add_attachments (TnyMimePart *part, GList *attachments_list, gboolean add_inline, GError **err)
327 {
328         GList *pos;
329         TnyMimePart *attachment_part, *old_attachment;
330         gint ret;
331         gint attached = 0;
332
333         for (pos = (GList *)attachments_list; pos; pos = pos->next) {
334
335                 old_attachment = pos->data;
336                 if (!tny_mime_part_is_purged (old_attachment)) {
337                         const gchar *old_cid;
338                         old_cid = tny_mime_part_get_content_id (old_attachment);
339                         attachment_part = copy_mime_part (old_attachment, err);
340                         if (attachment_part != NULL) {
341                                 if (add_inline) {
342                                         tny_mime_part_set_header_pair (attachment_part, "Content-Disposition",
343                                                                        "inline");
344                                 } else {
345                                         const gchar *filename;
346                                         filename = tny_mime_part_get_filename (old_attachment);
347                                         if (filename)
348                                                 tny_mime_part_set_filename (attachment_part, filename);
349                                         else
350                                                 tny_mime_part_set_header_pair (attachment_part, "Content-Disposition",
351                                                                                "attachment");
352                                 }
353                                 tny_mime_part_set_transfer_encoding (TNY_MIME_PART (attachment_part), "base64");
354                                 ret = tny_mime_part_add_part (TNY_MIME_PART (part), attachment_part);
355                                 attached++;
356                                 if (old_cid)
357                                         tny_mime_part_set_content_id (attachment_part, old_cid);
358                                 g_object_unref (attachment_part);
359                         }
360                 }
361         }
362         return attached;
363 }
364
365 static void
366 add_images (TnyMsg *msg, GList *images_list, GError **err)
367 {
368         TnyMimePart *related_part = NULL;
369         const gchar *content_type;
370
371         content_type = tny_mime_part_get_content_type (TNY_MIME_PART (msg));
372
373         if ((content_type != NULL) && !strcasecmp (content_type, "multipart/related")) {
374                 related_part = g_object_ref (msg);
375         } else if ((content_type != NULL) && !strcasecmp (content_type, "multipart/mixed")) {
376                 TnyList *parts = TNY_LIST (tny_simple_list_new ());
377                 TnyIterator *iter = NULL;
378                 tny_mime_part_get_parts (TNY_MIME_PART (msg), parts);
379                 iter = tny_list_create_iterator (parts);
380
381                 while (!tny_iterator_is_done (iter)) {
382                         TnyMimePart *part = TNY_MIME_PART (tny_iterator_get_current (iter));
383                         if (part && !g_strcasecmp (tny_mime_part_get_content_type (part), "multipart/related")) {
384                                 related_part = part;
385                                 break;
386                         }
387                         if (part)
388                                 g_object_unref (part);
389                         tny_iterator_next (iter);
390                 }
391                 g_object_unref (iter);
392                 g_object_unref (parts);
393         }
394
395         if (related_part != NULL) {
396                 /* TODO: attach images in their proper place */
397                 add_attachments (related_part, images_list, TRUE, err);
398                 g_object_unref (related_part);
399         }
400 }
401
402
403 gchar * 
404 modest_tny_msg_get_body (TnyMsg *msg, gboolean want_html, gboolean *is_html)
405 {
406         TnyStream *stream;
407         TnyMimePart *body;
408         GtkTextBuffer *buf;
409         GtkTextIter start, end;
410         gchar *to_quote;
411         gboolean result_was_html = TRUE;
412
413         g_return_val_if_fail (msg && TNY_IS_MSG(msg), NULL);
414         
415         body = modest_tny_msg_find_body_part(msg, want_html);
416         if (!body)
417                 return NULL;
418
419         buf = gtk_text_buffer_new (NULL);
420         stream = TNY_STREAM (tny_gtk_text_buffer_stream_new (buf));
421         tny_stream_reset (stream);
422         tny_mime_part_decode_to_stream (body, stream, NULL);
423         tny_stream_reset (stream);
424         
425         gtk_text_buffer_get_bounds (buf, &start, &end);
426         to_quote = gtk_text_buffer_get_text (buf, &start, &end, FALSE);
427         if (tny_mime_part_content_type_is (body, "text/plain")) {
428                 gchar *to_quote_converted = modest_text_utils_convert_to_html (to_quote);
429                 g_free (to_quote);
430                 to_quote = to_quote_converted;
431                 result_was_html = FALSE;
432         }
433
434         g_object_unref (buf);
435         g_object_unref (G_OBJECT(stream));
436         g_object_unref (G_OBJECT(body));
437
438         if (is_html != NULL)
439                 *is_html = result_was_html;
440
441         return to_quote;
442 }
443
444
445 TnyMimePart*
446 modest_tny_msg_find_body_part_from_mime_part (TnyMimePart *msg, gboolean want_html)
447 {
448         const gchar *desired_mime_type = want_html ? "text/html" : "text/plain";
449         TnyMimePart *part = NULL;
450         TnyList *parts = NULL;
451         TnyIterator *iter = NULL;
452         gchar *header_content_type;
453         gchar *header_content_type_lower = NULL;
454         
455         if (!msg)
456                 return NULL;
457
458         /* If it's an application multipart, then we don't get into as we don't
459          * support them (for example application/sml or wap messages */
460         header_content_type = modest_tny_mime_part_get_header_value (msg, "Content-Type");
461         if (header_content_type) {
462                 header_content_type = g_strstrip (header_content_type);
463                 header_content_type_lower = g_ascii_strdown (header_content_type, -1);
464         }
465         if (header_content_type_lower && 
466             g_str_has_prefix (header_content_type_lower, "multipart/") &&
467             !g_str_has_prefix (header_content_type_lower, "multipart/signed") &&
468             strstr (header_content_type_lower, "application/")) {
469                 g_free (header_content_type_lower);
470                 g_free (header_content_type);
471                 return NULL;
472         }       
473         g_free (header_content_type_lower);
474         g_free (header_content_type);
475
476         parts = TNY_LIST (tny_simple_list_new());
477         tny_mime_part_get_parts (TNY_MIME_PART (msg), parts);
478
479         iter  = tny_list_create_iterator(parts);
480
481         /* no parts? assume it's single-part message */
482         if (tny_iterator_is_done(iter)) {
483                 gchar *content_type;
484                 gboolean is_text_part;
485                 g_object_unref (G_OBJECT(iter));
486                 content_type = modest_tny_mime_part_get_content_type (msg);
487                 if (content_type == NULL)
488                         return NULL;
489                 is_text_part = 
490                         g_str_has_prefix (content_type, "text/");
491                 g_free (content_type);
492                 /* if this part cannot be a supported body return NULL */
493                 if (!is_text_part) {
494                         return NULL;
495                 } else {
496                         return TNY_MIME_PART (g_object_ref(G_OBJECT(msg)));
497                 }
498         } else {
499                 do {
500                         gchar *tmp, *content_type = NULL;
501                         gboolean has_content_disp_name = FALSE;
502
503                         part = TNY_MIME_PART(tny_iterator_get_current (iter));
504
505                         if (!part) {
506                                 g_warning ("%s: not a valid mime part", __FUNCTION__);
507                                 tny_iterator_next (iter);
508                                 continue;
509                         }
510
511                         /* it's a message --> ignore */
512                         if (part && TNY_IS_MSG (part)) {
513                                 g_object_unref (part);
514                                 part = NULL;
515                                 tny_iterator_next (iter);
516                                 continue;
517                         }                       
518
519                         /* we need to strdown the content type, because
520                          * tny_mime_part_has_content_type does not do it...
521                          */
522                         content_type = g_ascii_strdown (tny_mime_part_get_content_type (part), -1);
523                         
524                         /* mime-parts with a content-disposition header (either 'inline' or 'attachment')
525                          * and a 'name=' thingy cannot be body parts
526                          */
527                                 
528                         tmp = modest_tny_mime_part_get_header_value (part, "Content-Disposition");
529                         if (tmp) {
530                                 gchar *content_disp = g_ascii_strdown(tmp, -1);
531                                 g_free (tmp);
532                                 has_content_disp_name = g_strstr_len (content_disp, strlen(content_disp), "name=") != NULL;
533                                 g_free (content_disp);
534                         }
535                         
536                         if (g_str_has_prefix (content_type, desired_mime_type) && 
537                             !has_content_disp_name &&
538                             !modest_tny_mime_part_is_attachment_for_modest (part)) {
539                                 /* we found the desired mime-type! */
540                                 g_free (content_type);
541                                 break;
542
543                         } else  if (g_str_has_prefix(content_type, "multipart")) {
544
545                                 /* multipart? recurse! */
546                                 g_object_unref (part);
547                                 g_free (content_type);
548                                 part = modest_tny_msg_find_body_part_from_mime_part (part, want_html);
549                                 if (part)
550                                         break;
551                         } else
552                                 g_free (content_type);
553                         
554                         if (part) {
555                                 g_object_unref (G_OBJECT(part));
556                                 part = NULL;
557                         }
558                         
559                         tny_iterator_next (iter);
560                         
561                 } while (!tny_iterator_is_done(iter));
562         }
563         
564         g_object_unref (G_OBJECT(iter));
565         g_object_unref (G_OBJECT(parts));
566
567         /* if were trying to find an HTML part and couldn't find it,
568          * try to find a text/plain part instead
569          */
570         if (!part && want_html) 
571                 return modest_tny_msg_find_body_part_from_mime_part (msg, FALSE);
572         else
573                 return part; /* this maybe NULL, this is not an error; some message just don't have a body
574                               * part */
575 }
576
577
578 TnyMimePart*
579 modest_tny_msg_find_body_part (TnyMsg *msg, gboolean want_html)
580 {
581         g_return_val_if_fail (msg && TNY_IS_MSG(msg), NULL);
582         
583         return modest_tny_msg_find_body_part_from_mime_part (TNY_MIME_PART(msg),
584                                                              want_html);
585 }
586
587
588 #define MODEST_TNY_MSG_PARENT_UID "parent-uid"
589
590 static TnyMsg *
591 create_reply_forward_mail (TnyMsg *msg, TnyHeader *header, const gchar *from,
592                            const gchar *signature, gboolean is_reply,
593                            guint type /*ignored*/, GList *attachments)
594 {
595         TnyMsg *new_msg;
596         TnyHeader *new_header;
597         gchar *old_subject;
598         gchar *new_subject;
599         TnyMimePart *body = NULL;
600         ModestFormatter *formatter;
601         gchar *subject_prefix;
602         gboolean no_text_part;
603         gchar *parent_uid;
604
605         if (header)
606                 g_object_ref (header);
607         else
608                 header = tny_msg_get_header (msg);
609
610         /* Get body from original msg. Always look for the text/plain
611            part of the message to create the reply/forwarded mail */
612         if (msg != NULL)
613                 body   = modest_tny_msg_find_body_part (msg, FALSE);
614
615         if (modest_conf_get_bool (modest_runtime_get_conf (), MODEST_CONF_PREFER_FORMATTED_TEXT,
616                                   NULL))
617                 formatter = modest_formatter_new ("text/html", signature);
618         else
619                 formatter = modest_formatter_new ("text/plain", signature);
620
621
622         /* if we don't have a text-part */
623         no_text_part = (!body) || (strcmp (tny_mime_part_get_content_type (body), "text/html")==0);
624
625         /* when we're reply, include the text part if we have it, or nothing otherwise. */
626         if (is_reply)
627                 new_msg = modest_formatter_quote  (formatter, no_text_part ? NULL: body, header,
628                                                     attachments);
629         else {
630                 /* for attachements; inline if there is a text part, and include the
631                  * full old mail if there was none */
632                 if (no_text_part) {
633                         new_msg = modest_formatter_attach (formatter, msg, header);
634                 } else { 
635                         new_msg = modest_formatter_inline  (formatter, body, header,
636                                                             attachments);
637                 }
638         }
639
640         g_object_unref (G_OBJECT(formatter));
641         if (body)
642                 g_object_unref (G_OBJECT(body));
643
644         /* Fill the header */
645         new_header = tny_msg_get_header (new_msg);
646         tny_header_set_from (new_header, from);
647         tny_header_set_replyto (new_header, from);
648
649         /* Change the subject */
650         if (is_reply)
651                 subject_prefix = g_strconcat (_("mail_va_re"), ":", NULL);
652         else
653                 subject_prefix = g_strconcat (_("mail_va_fw"), ":", NULL);
654         old_subject = tny_header_dup_subject (header);
655         new_subject =
656                 (gchar *) modest_text_utils_derived_subject (old_subject,
657                                                              subject_prefix);
658         g_free (old_subject);
659         g_free (subject_prefix);
660         tny_header_set_subject (new_header, (const gchar *) new_subject);
661         g_free (new_subject);
662
663         /* get the parent uid, and set it as a gobject property on the new msg */
664         parent_uid = modest_tny_folder_get_header_unique_id (header);
665         g_object_set_data_full (G_OBJECT(new_msg), MODEST_TNY_MSG_PARENT_UID,
666                                 parent_uid, g_free);
667
668         /* set modest as the X-Mailer
669          * we could this in the platform factory, but then the header
670          * would show up before all the others.
671          */
672         tny_mime_part_set_header_pair (TNY_MIME_PART (msg), "X-Mailer", "Modest "
673                                        VERSION);
674
675         /* Clean */
676         g_object_unref (G_OBJECT (new_header));
677         g_object_unref (G_OBJECT (header));
678         /* ugly to unref it here instead of in the calling func */
679
680         if (!is_reply & !no_text_part) {
681                 add_attachments (TNY_MIME_PART (new_msg), attachments, FALSE, NULL);
682         }
683
684         return new_msg;
685 }
686
687 const gchar*
688 modest_tny_msg_get_parent_uid (TnyMsg *msg)
689 {
690         g_return_val_if_fail (msg && TNY_IS_MSG(msg), NULL);
691         
692         return g_object_get_data (G_OBJECT(msg), MODEST_TNY_MSG_PARENT_UID);
693 }
694
695
696
697 static void
698 add_if_attachment (gpointer data, gpointer user_data)
699 {
700         TnyMimePart *part;
701         GList **attachments_list;
702
703         part = TNY_MIME_PART (data);
704         attachments_list = ((GList **) user_data);
705
706         if ((tny_mime_part_is_attachment (part))||(TNY_IS_MSG (part))) {
707                 *attachments_list = g_list_prepend (*attachments_list, part);
708                 g_object_ref (part);
709         }
710 }
711
712 TnyMsg* 
713 modest_tny_msg_create_forward_msg (TnyMsg *msg, 
714                                    const gchar *from,
715                                    const gchar *signature,
716                                    ModestTnyMsgForwardType forward_type)
717 {
718         TnyMsg *new_msg;
719         TnyList *parts = NULL;
720         GList *attachments_list = NULL;
721
722         g_return_val_if_fail (msg && TNY_IS_MSG(msg), NULL);
723         
724         /* Add attachments */
725         parts = TNY_LIST (tny_simple_list_new());
726         tny_mime_part_get_parts (TNY_MIME_PART (msg), parts);
727         tny_list_foreach (parts, add_if_attachment, &attachments_list);
728
729         new_msg = create_reply_forward_mail (msg, NULL, from, signature, FALSE, forward_type,
730                                              attachments_list);
731
732         /* Clean */
733         if (attachments_list) {
734                 g_list_foreach (attachments_list, (GFunc) g_object_unref, NULL);
735                 g_list_free (attachments_list);
736         }
737         g_object_unref (G_OBJECT (parts));
738
739         return new_msg;
740 }
741
742
743
744 static gint
745 count_addresses (const gchar* addresses)
746 {
747         gint count = 1;
748
749         if (!addresses)
750                 return 0;
751         
752         while (*addresses) {
753                 if (*addresses == ',' || *addresses == ';')
754                         ++count;
755                 ++addresses;
756         }
757         
758         return count;
759 }
760
761
762 /* get the new To:, based on the old header,
763  * result is newly allocated or NULL in case of error
764  * */
765 static gchar*
766 get_new_to (TnyMsg *msg, TnyHeader *header, const gchar* from,
767             ModestTnyMsgReplyMode reply_mode)
768 {
769         gchar* old_reply_to;
770         gchar* old_from;
771         gchar* new_to;
772         
773         /* according to RFC2369 (http://www.faqs.org/rfcs/rfc2369.html), we
774          * can identify Mailing-List posts by the List-Help header.
775          * for mailing lists, both the Reply-To: and From: should be included
776          * in the new To:; for now, we're ignoring List-Post
777          */
778         gchar* list_help = modest_tny_mime_part_get_header_value (TNY_MIME_PART(msg), 
779                                                                   "List-Help");
780         gboolean is_mailing_list = (list_help != NULL);
781         g_free (list_help);
782
783
784         /* reply to sender, use ReplyTo or From */
785         old_reply_to = modest_tny_mime_part_get_header_value (TNY_MIME_PART(msg), 
786                                                               "Reply-To"); 
787         old_from     = tny_header_dup_from (header);
788         
789         if (!old_from && !old_reply_to) {
790                 g_warning ("%s: failed to get either Reply-To: or From: from header",
791                            __FUNCTION__);
792                 return NULL;
793         }
794         
795         /* for mailing lists, use both Reply-To and From if we did a
796          * 'Reply All:'
797          * */
798         if (is_mailing_list && reply_mode == MODEST_TNY_MSG_REPLY_MODE_ALL &&
799             old_reply_to && old_from && strcmp (old_from, old_reply_to) != 0)
800                 new_to = g_strjoin (",", old_reply_to, old_from, NULL);
801         else
802                 /* otherwise use either Reply-To: (preferred) or From: */
803                 new_to = g_strdup (old_reply_to ? old_reply_to : old_from);
804         g_free (old_from);
805         g_free (old_reply_to);
806
807         /* in case of ReplyAll, we need to add the Recipients in the old To: */
808         if (reply_mode == MODEST_TNY_MSG_REPLY_MODE_ALL) {
809                 gchar *old_to = tny_header_dup_to (header);
810                 if (!old_to) 
811                         g_warning ("%s: no To: address found in source mail",
812                                    __FUNCTION__);
813                 else {
814                         /* append the old To: */
815                         gchar *tmp = g_strjoin (",", new_to, old_to, NULL);
816                         g_free (new_to);
817                         new_to = tmp;
818                         g_free (old_to);
819                 }
820
821                 /* remove duplicate entries */
822                 gchar *tmp = modest_text_utils_remove_duplicate_addresses (new_to);
823                 g_free (new_to);
824                 new_to = tmp;
825                 
826                 /* now, strip me (the new From:) from the new_to, but only if
827                  * there are >1 addresses there */
828                 if (count_addresses (new_to) > 1) {
829                         gchar *tmp = modest_text_utils_remove_address (new_to, from);
830                         g_free (new_to);
831                         new_to = tmp;
832                 }
833         }
834
835         return new_to;
836 }
837
838
839 /* get the new Cc:, based on the old header,
840  * result is newly allocated or NULL in case of error */
841 static gchar*
842 get_new_cc (TnyHeader *header, const gchar* from)
843 {
844         gchar *old_cc, *result, *dup;
845
846         old_cc = tny_header_dup_cc (header);
847         if (!old_cc)
848                 return NULL;
849
850         /* remove me (the new From:) from the Cc: list */
851         dup =  modest_text_utils_remove_address (old_cc, from);
852         result = modest_text_utils_remove_duplicate_addresses (dup);
853         g_free (dup);
854         g_free (old_cc);
855         return result;
856 }
857
858 void 
859 modest_tny_msg_get_references (TnyMsg *msg, gchar **message_id, gchar **references, gchar **in_reply_to)
860 {
861         TnyList *headers;
862         TnyIterator *iterator;
863         gchar *l_message_id;
864         gchar *l_references;
865         gchar *l_in_reply_to;
866
867         g_return_if_fail (TNY_IS_MSG (msg));
868
869         l_message_id = NULL;
870         l_references = NULL;
871         l_in_reply_to = NULL;
872
873         headers = TNY_LIST (tny_simple_list_new ());
874         tny_mime_part_get_header_pairs (TNY_MIME_PART (msg), headers);
875
876         iterator = tny_list_create_iterator (headers);
877         while (!tny_iterator_is_done (iterator)) {
878                 TnyPair *pair;
879                 const gchar *name;
880
881                 pair = TNY_PAIR (tny_iterator_get_current (iterator));
882                 name = tny_pair_get_name (pair);
883                 if (!g_strcasecmp (name, "References")) {
884                         if (l_references) g_free (l_references);
885                         l_references = g_strdup (tny_pair_get_value (pair));
886                 } else if (!g_strcasecmp (name, "In-Reply-To")) {
887                         if (l_in_reply_to) g_free (l_in_reply_to);
888                         l_in_reply_to = g_strdup (tny_pair_get_value (pair));
889                 } else if (!g_strcasecmp (name, "Message-ID")) {
890                         if (l_message_id) g_free (l_message_id);
891                         l_message_id = g_strdup (tny_pair_get_value (pair));
892                 }
893
894                 g_object_unref (pair);
895                 tny_iterator_next (iterator);
896         }
897
898         g_object_unref (iterator);
899         g_object_unref (headers);
900
901         if (message_id) {
902                 *message_id = l_message_id;
903         } else {
904                 g_free (l_message_id);
905         }
906
907         if (in_reply_to) {
908                 *in_reply_to = l_in_reply_to;
909         } else {
910                 g_free (l_in_reply_to);
911         }
912
913         if (references) {
914                 *references = l_references;
915         } else {
916                 g_free (l_references);
917         }
918 }
919
920 static void 
921 set_references (TnyMsg *reply_msg, TnyMsg *original_msg)
922 {
923         gchar *orig_references, *orig_in_reply_to, *orig_message_id;
924         gchar *references, *in_reply_to;
925
926         modest_tny_msg_get_references (original_msg, &orig_message_id, &orig_references, &orig_in_reply_to);
927
928         references = NULL;
929         in_reply_to = NULL;
930
931         if (orig_message_id)
932                 in_reply_to = g_strdup (orig_message_id);
933
934         if (orig_references) {
935                 if (orig_message_id)
936                         references = g_strconcat (orig_references, "\n        ", orig_message_id, NULL);
937                 else
938                         references = g_strdup (orig_references);
939
940         } else if (orig_in_reply_to) {
941                 if (orig_message_id)
942                         references = g_strconcat (orig_in_reply_to, "\n        ", orig_message_id, NULL);
943                 else
944                         references = g_strdup (orig_in_reply_to);
945         } else if (orig_message_id) {
946                 references = g_strdup (orig_message_id);
947         }
948
949         g_free (orig_references);
950         g_free (orig_in_reply_to);
951         g_free (orig_message_id);
952
953         if (in_reply_to) {
954                 tny_mime_part_set_header_pair (TNY_MIME_PART (reply_msg), "In-Reply-To", in_reply_to);
955         }
956         if (references) {
957                 tny_mime_part_set_header_pair (TNY_MIME_PART (reply_msg), "References", references);
958         }
959 }
960
961 TnyMsg* 
962 modest_tny_msg_create_reply_msg (TnyMsg *msg,
963                                  TnyHeader *header,
964                                  const gchar *from,
965                                  const gchar *signature,
966                                  ModestTnyMsgReplyType reply_type,
967                                  ModestTnyMsgReplyMode reply_mode)
968 {
969         TnyMsg *new_msg = NULL;
970         TnyHeader *new_header;
971         gchar *new_to = NULL;
972         TnyList *parts = NULL;
973         GList *attachments_list = NULL;
974
975         g_return_val_if_fail (msg && TNY_IS_MSG(msg), NULL);
976         
977         parts = TNY_LIST (tny_simple_list_new());
978         tny_mime_part_get_parts (TNY_MIME_PART (msg), parts);
979         tny_list_foreach (parts, add_if_attachment, &attachments_list);
980
981         new_msg = create_reply_forward_mail (msg, header, from, signature, TRUE, reply_type,
982                                              attachments_list);
983
984         set_references (new_msg, msg);
985         if (attachments_list != NULL) {
986                 g_list_foreach (attachments_list, (GFunc) g_object_unref, NULL);
987                 g_list_free (attachments_list);
988         }
989         g_object_unref (parts);
990
991         /* Fill the header */
992         if (header)
993                 g_object_ref (header);
994         else
995                 header = tny_msg_get_header (msg);
996
997         
998         new_header = tny_msg_get_header(new_msg);
999         new_to = get_new_to (msg, header, from, reply_mode);
1000         if (!new_to)
1001                 g_warning ("%s: failed to get new To:", __FUNCTION__);
1002         else {
1003                 tny_header_set_to (new_header, new_to);
1004                 g_free (new_to);
1005         }
1006
1007         if (reply_mode == MODEST_TNY_MSG_REPLY_MODE_ALL) {
1008                 gchar *new_cc = get_new_cc (header, from);
1009                 if (new_cc) { 
1010                         tny_header_set_cc (new_header, new_cc);
1011                         g_free (new_cc);
1012                 }
1013         }
1014
1015         /* Clean */
1016         g_object_unref (G_OBJECT (new_header));
1017         g_object_unref (G_OBJECT (header));
1018
1019         return new_msg;
1020 }
1021
1022
1023 static gboolean
1024 is_ascii(const gchar *s)
1025 {
1026         if (!s)
1027                 return TRUE;
1028         while (s[0]) {
1029                 if (s[0] & 128 || s[0] < 32)
1030                         return FALSE;
1031                 s++;
1032         }
1033         return TRUE;
1034 }
1035
1036 static char *
1037 get_content_type(const gchar *s)
1038 {
1039         GString *type;
1040         
1041         type = g_string_new("text/plain");
1042         if (!is_ascii(s)) {
1043                 if (g_utf8_validate(s, -1, NULL)) {
1044                         g_string_append(type, "; charset=\"utf-8\"");
1045                 } else {
1046                         /* it should be impossible to reach this, but better safe than sorry */
1047                         g_warning("invalid utf8 in message");
1048                         g_string_append(type, "; charset=\"latin1\"");
1049                 }
1050         }
1051         return g_string_free(type, FALSE);
1052 }
1053
1054 guint64
1055 modest_tny_msg_estimate_size (const gchar *plain_body, const gchar *html_body,
1056                               guint64 parts_count,
1057                               guint64 parts_size)
1058 {
1059         guint64 result;
1060
1061         /* estimation of headers size */
1062         result = 1024;
1063
1064         /* We add a 20% of size due to the increase in 7bit encoding */
1065         if (plain_body) {
1066                 result += strlen (plain_body) * 120 / 100;
1067         }
1068         if (html_body) {
1069                 result += strlen (html_body) * 120 / 100;
1070         }
1071
1072         /* 256 bytes per additional part because of their headers */
1073         result += parts_count * 256;
1074
1075         /* 150% of increase per encoding */
1076         result += parts_size * 3 / 2;
1077
1078         return result;
1079 }
1080
1081 GSList *
1082 modest_tny_msg_header_get_all_recipients_list (TnyHeader *header)
1083 {
1084         GSList *recipients = NULL;
1085         gchar *from = NULL, *to = NULL, *cc = NULL, *bcc = NULL;
1086
1087         if (header == NULL)
1088                 return NULL;
1089
1090         from = tny_header_dup_from (header);
1091         to = tny_header_dup_to (header);
1092         cc = tny_header_dup_cc (header);
1093         bcc = tny_header_dup_bcc (header);
1094
1095         recipients = NULL;
1096         if (from)
1097                 recipients = g_slist_concat (recipients, modest_text_utils_split_addresses_list (from));
1098         if (to)
1099                 recipients = g_slist_concat (recipients, modest_text_utils_split_addresses_list (to));
1100         if (cc)
1101                 recipients = g_slist_concat (recipients, modest_text_utils_split_addresses_list (cc));
1102         if (bcc)
1103                 recipients = g_slist_concat (recipients, modest_text_utils_split_addresses_list (bcc));
1104
1105         g_free (from);
1106         g_free (to);
1107         g_free (cc);
1108         g_free (bcc);
1109
1110         return recipients;
1111 }
1112
1113 GSList *
1114 modest_tny_msg_get_all_recipients_list (TnyMsg *msg)
1115 {
1116         TnyHeader *header = NULL;
1117         GSList *recipients = NULL;
1118
1119         if (msg == NULL)
1120                 return NULL;
1121
1122         header = tny_msg_get_header (msg);
1123         if (header == NULL)
1124                 return NULL;
1125
1126         recipients = modest_tny_msg_header_get_all_recipients_list (header);
1127         g_object_unref (header);
1128
1129         return recipients;
1130 }
1131