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