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         /* 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                         const gchar *subpart_cid;
 268                         TnyMimePart *subpart_copy = copy_mime_part (subpart);
 269                         subpart_cid = tny_mime_part_get_content_id (subpart);
 270                         tny_mime_part_add_part (result, subpart_copy);
 271                         if (subpart_cid)
 272                                 tny_mime_part_set_content_id (result, subpart_cid);
 273                         g_object_unref (subpart);
 274                         g_object_unref (subpart_copy);
 275                 }
 276
 277                 tny_iterator_next (iterator);
 278         }
 279         g_object_unref (iterator);
 280         g_object_unref (parts);
 281         g_object_unref (attachment_stream);
 282
 283         return result;
 284 }
 285
 286 static void
 287 add_attachments (TnyMimePart *part, GList *attachments_list, gboolean add_inline)
 288 {
 289         GList *pos;
 290         TnyMimePart *attachment_part, *old_attachment;
 291
 292         for (pos = (GList *)attachments_list; pos; pos = pos->next) {
 293
 294                 old_attachment = pos->data;
 295                 if (!tny_mime_part_is_purged (old_attachment)) {
 296                         const gchar *old_cid;
 297                         old_cid = tny_mime_part_get_content_id (old_attachment);
 298                         attachment_part = copy_mime_part (old_attachment);
 299                         tny_mime_part_set_header_pair (attachment_part, "Content-Disposition",
 300                                                        add_inline?"inline":"attachment");
 301                         tny_mime_part_add_part (TNY_MIME_PART (part), attachment_part);
 302                         if (old_cid)
 303                                 tny_mime_part_set_content_id (attachment_part, old_cid);
 304                         g_object_unref (attachment_part);
 305                 }
 306         }
 307 }
 308
 309 static void
 310 add_images (TnyMsg *msg, GList *images_list)
 311 {
 312         TnyMimePart *related_part = NULL;
 313         const gchar *content_type;
 314
 315         content_type = tny_mime_part_get_content_type (TNY_MIME_PART (msg));
 316
 317         if ((content_type != NULL) && !strcasecmp (content_type, "multipart/related")) {
 318                 related_part = g_object_ref (msg);
 319         } else if ((content_type != NULL) && !strcasecmp (content_type, "multipart/mixed")) {
 320                 TnyList *parts = TNY_LIST (tny_simple_list_new ());
 321                 TnyIterator *iter = NULL;
 322                 tny_mime_part_get_parts (TNY_MIME_PART (msg), parts);
 323                 iter = tny_list_create_iterator (parts);
 324
 325                 while (!tny_iterator_is_done (iter)) {
 326                         TnyMimePart *part = TNY_MIME_PART (tny_iterator_get_current (iter));
 327                         if (part && !g_strcasecmp (tny_mime_part_get_content_type (part), "multipart/related")) {
 328                                 related_part = part;
 329                                 break;
 330                         } else {
 331                                 g_object_unref (part);
 332                         }
 333                         tny_iterator_next (iter);
 334                 }
 335                 g_object_unref (iter);
 336                 g_object_unref (parts);
 337         }
 338
 339         if (related_part != NULL) {
 340                 /* TODO: attach images in their proper place */
 341                 add_attachments (related_part, images_list, TRUE);
 342                 g_object_unref (related_part);
 343         }
 344 }
 345
 346
 347 gchar *
 348 modest_tny_msg_get_body (TnyMsg *msg, gboolean want_html, gboolean *is_html)
 349 {
 350         TnyStream *stream;
 351         TnyMimePart *body;
 352         GtkTextBuffer *buf;
 353         GtkTextIter start, end;
 354         gchar *to_quote;
 355         gboolean result_was_html = TRUE;
 356
 357         g_return_val_if_fail (msg && TNY_IS_MSG(msg), NULL);
 358
 359         body = modest_tny_msg_find_body_part(msg, want_html);
 360         if (!body)
 361                 return NULL;
 362
 363         buf = gtk_text_buffer_new (NULL);
 364         stream = TNY_STREAM (tny_gtk_text_buffer_stream_new (buf));
 365         tny_stream_reset (stream);
 366         tny_mime_part_decode_to_stream (body, stream);
 367         tny_stream_reset (stream);
 368
 369         gtk_text_buffer_get_bounds (buf, &start, &end);
 370         to_quote = gtk_text_buffer_get_text (buf, &start, &end, FALSE);
 371         if (tny_mime_part_content_type_is (body, "text/plain")) {
 372                 gchar *to_quote_converted = modest_text_utils_convert_to_html (to_quote);
 373                 g_free (to_quote);
 374                 to_quote = to_quote_converted;
 375                 result_was_html = FALSE;
 376         }
 377
 378         g_object_unref (buf);
 379         g_object_unref (G_OBJECT(stream));
 380         g_object_unref (G_OBJECT(body));
 381
 382         if (is_html != NULL)
 383                 *is_html = result_was_html;
 384
 385         return to_quote;
 386 }
 387
 388
 389 TnyMimePart*
 390 modest_tny_msg_find_body_part_from_mime_part (TnyMimePart *msg, gboolean want_html)
 391 {
 392         const gchar *desired_mime_type = want_html ? "text/html" : "text/plain";
 393         TnyMimePart *part = NULL;
 394         TnyList *parts = NULL;
 395         TnyIterator *iter = NULL;
 396
 397         if (!msg)
 398                 return NULL;
 399
 400         parts = TNY_LIST (tny_simple_list_new());
 401         tny_mime_part_get_parts (TNY_MIME_PART (msg), parts);
 402
 403         iter  = tny_list_create_iterator(parts);
 404
 405         /* no parts? assume it's single-part message */
 406         if (tny_iterator_is_done(iter)) {
 407                 g_object_unref (G_OBJECT(iter));
 408                 return TNY_MIME_PART (g_object_ref(G_OBJECT(msg)));
 409         } else {
 410                 do {
 411                         gchar *content_type = NULL;
 412
 413                         part = TNY_MIME_PART(tny_iterator_get_current (iter));
 414
 415                         if (!part) {
 416                                 g_warning ("%s: not a valid mime part", __FUNCTION__);
 417                                 continue;
 418                         }
 419
 420                         /* it's a message --> ignore */
 421                         if (part && TNY_IS_MSG (part)) {
 422                                 g_object_unref (part);
 423                                 tny_iterator_next (iter);
 424                                 continue;
 425                         }
 426
 427
 428                         /* we need to strdown the content type, because
 429                          * tny_mime_part_has_content_type does not do it...
 430                          */
 431                         content_type = g_ascii_strdown (tny_mime_part_get_content_type (part), -1);
 432
 433                         if (g_str_has_prefix (content_type, desired_mime_type) && !tny_mime_part_is_attachment (part)) {
 434                                 /* we found the desired mime-type! */
 435                                 g_free (content_type);
 436                                 break;
 437
 438                         } else  if (g_str_has_prefix(content_type, "multipart")) {
 439
 440                                 /* multipart? recurse! */
 441                                 g_object_unref (part);
 442                                 g_free (content_type);
 443                                 part = modest_tny_msg_find_body_part_from_mime_part (part, want_html);
 444                                 if (part)
 445                                         break;
 446                         } else
 447                                 g_free (content_type);
 448
 449                         if (part) {
 450                                 g_object_unref (G_OBJECT(part));
 451                                 part = NULL;
 452                         }
 453
 454                         tny_iterator_next (iter);
 455
 456                 } while (!tny_iterator_is_done(iter));
 457         }
 458
 459         g_object_unref (G_OBJECT(iter));
 460         g_object_unref (G_OBJECT(parts));
 461
 462         /* if were trying to find an HTML part and couldn't find it,
 463          * try to find a text/plain part instead
 464          */
 465         if (!part && want_html)
 466                 return modest_tny_msg_find_body_part_from_mime_part (msg, FALSE);
 467         else
 468                 return part; /* this maybe NULL, this is not an error; some message just don't have a body
 469                               * part */
 470 }
 471
 472
 473 TnyMimePart*
 474 modest_tny_msg_find_body_part (TnyMsg *msg, gboolean want_html)
 475 {
 476         g_return_val_if_fail (msg && TNY_IS_MSG(msg), NULL);
 477
 478         return modest_tny_msg_find_body_part_from_mime_part (TNY_MIME_PART(msg),
 479                                                              want_html);
 480 }
 481
 482
 483 #define MODEST_TNY_MSG_PARENT_UID "parent-uid"
 484
 485 static TnyMsg *
 486 create_reply_forward_mail (TnyMsg *msg, TnyHeader *header, const gchar *from,
 487                            const gchar *signature, gboolean is_reply,
 488                            guint type /*ignored*/, GList *attachments)
 489 {
 490         TnyMsg *new_msg;
 491         TnyHeader *new_header;
 492         gchar *new_subject;
 493         TnyMimePart *body = NULL;
 494         ModestFormatter *formatter;
 495         gchar *subject_prefix;
 496         gboolean no_text_part;
 497
 498         if (header)
 499                 g_object_ref (header);
 500         else
 501                 header = tny_msg_get_header (msg);
 502
 503         /* Get body from original msg. Always look for the text/plain
 504            part of the message to create the reply/forwarded mail */
 505         if (msg != NULL)
 506                 body   = modest_tny_msg_find_body_part (msg, FALSE);
 507
 508         if (modest_conf_get_bool (modest_runtime_get_conf (), MODEST_CONF_PREFER_FORMATTED_TEXT,
 509                                   NULL))
 510                 formatter = modest_formatter_new ("text/html", signature);
 511         else
 512                 formatter = modest_formatter_new ("text/plain", signature);
 513
 514
 515         /* if we don't have a text-part */
 516         no_text_part = (!body) || (strcmp (tny_mime_part_get_content_type (body), "text/html")==0);
 517
 518         /* when we're reply, include the text part if we have it, or nothing otherwise. */
 519         if (is_reply)
 520                 new_msg = modest_formatter_quote  (formatter, no_text_part ? NULL: body, header,
 521                                                     attachments);
 522         else {
 523                 /* for attachements; inline if there is a text part, and include the
 524                  * full old mail if there was none */
 525                 if (no_text_part)
 526                         new_msg = modest_formatter_attach (formatter, msg, header);
 527                 else
 528                         new_msg = modest_formatter_inline  (formatter, body, header,
 529                                                             attachments);
 530         }
 531
 532         g_object_unref (G_OBJECT(formatter));
 533         if (body)
 534                 g_object_unref (G_OBJECT(body));
 535
 536         /* Fill the header */
 537         new_header = tny_msg_get_header (new_msg);
 538         tny_header_set_from (new_header, from);
 539         tny_header_set_replyto (new_header, from);
 540
 541         /* Change the subject */
 542         if (is_reply)
 543                 subject_prefix = g_strconcat (_("mail_va_re"), ":", NULL);
 544         else
 545                 subject_prefix = g_strconcat (_("mail_va_fw"), ":", NULL);
 546         new_subject =
 547                 (gchar *) modest_text_utils_derived_subject (tny_header_get_subject(header),
 548                                                              subject_prefix);
 549         g_free (subject_prefix);
 550         tny_header_set_subject (new_header, (const gchar *) new_subject);
 551         g_free (new_subject);
 552
 553         /* get the parent uid, and set it as a gobject property on the new msg */
 554         if (new_msg) {
 555                 gchar* parent_uid = modest_tny_folder_get_header_unique_id (header);
 556                 g_object_set_data_full (G_OBJECT(new_msg), MODEST_TNY_MSG_PARENT_UID,
 557                                         parent_uid, g_free);
 558         }
 559
 560         /* set modest as the X-Mailer
 561          * we could this in the platform factory, but then the header
 562          * would show up before all the others.
 563          */
 564         tny_mime_part_set_header_pair (TNY_MIME_PART (msg), "X-Mailer", "Modest "
 565                                        VERSION);
 566
 567         /* Clean */
 568         g_object_unref (G_OBJECT (new_header));
 569         g_object_unref (G_OBJECT (header));
 570         /* ugly to unref it here instead of in the calling func */
 571
 572         return new_msg;
 573 }
 574
 575 const gchar*
 576 modest_tny_msg_get_parent_uid (TnyMsg *msg)
 577 {
 578         g_return_val_if_fail (msg && TNY_IS_MSG(msg), NULL);
 579
 580         return g_object_get_data (G_OBJECT(msg), MODEST_TNY_MSG_PARENT_UID);
 581 }
 582
 583
 584
 585 static void
 586 add_if_attachment (gpointer data, gpointer user_data)
 587 {
 588         TnyMimePart *part;
 589         GList **attachments_list;
 590
 591         part = TNY_MIME_PART (data);
 592         attachments_list = ((GList **) user_data);
 593
 594         if ((tny_mime_part_is_attachment (part))||(TNY_IS_MSG (part))) {
 595                 *attachments_list = g_list_prepend (*attachments_list, part);
 596                 g_object_ref (part);
 597         }
 598 }
 599
 600 TnyMsg*
 601 modest_tny_msg_create_forward_msg (TnyMsg *msg,
 602                                    const gchar *from,
 603                                    const gchar *signature,
 604                                    ModestTnyMsgForwardType forward_type)
 605 {
 606         TnyMsg *new_msg;
 607         TnyList *parts = NULL;
 608         GList *attachments_list = NULL;
 609
 610         g_return_val_if_fail (msg && TNY_IS_MSG(msg), NULL);
 611
 612         /* Add attachments */
 613         parts = TNY_LIST (tny_simple_list_new());
 614         tny_mime_part_get_parts (TNY_MIME_PART (msg), parts);
 615         tny_list_foreach (parts, add_if_attachment, &attachments_list);
 616
 617         new_msg = create_reply_forward_mail (msg, NULL, from, signature, FALSE, forward_type,
 618                                              attachments_list);
 619         add_attachments (TNY_MIME_PART (new_msg), attachments_list, FALSE);
 620
 621         /* Clean */
 622         if (attachments_list)
 623                 g_list_free (attachments_list);
 624         g_object_unref (G_OBJECT (parts));
 625
 626         return new_msg;
 627 }
 628
 629
 630 gchar*
 631 modest_tny_msg_get_header (TnyMsg *msg, const gchar *header)
 632 {
 633         TnyList *pairs;
 634         TnyIterator *iter;
 635         gchar *val;
 636
 637         g_return_val_if_fail (msg && TNY_IS_MSG(msg), NULL);
 638         g_return_val_if_fail (header, NULL);
 639
 640         pairs = tny_simple_list_new ();
 641
 642         tny_mime_part_get_header_pairs (TNY_MIME_PART(msg), pairs);
 643         iter = tny_list_create_iterator (pairs);
 644
 645         val = NULL;
 646         while (!tny_iterator_is_done(iter) && !val) {
 647
 648                 TnyPair *pair = (TnyPair*)tny_iterator_get_current(iter);
 649                 if (strcasecmp (header, tny_pair_get_name(pair)) == 0)
 650                         val = g_strdup (tny_pair_get_value(pair));
 651                 g_object_unref (pair);
 652
 653                 tny_iterator_next (iter);
 654         }
 655
 656         g_object_unref (pairs);
 657         g_object_unref (iter);
 658
 659         return val;
 660 }
 661
 662
 663 static gint
 664 count_addresses (const gchar* addresses)
 665 {
 666         gint count = 1;
 667
 668         if (!addresses)
 669                 return 0;
 670
 671         while (*addresses) {
 672                 if (*addresses == ',' || *addresses == ';')
 673                         ++count;
 674                 ++addresses;
 675         }
 676
 677         return count;
 678 }
 679
 680
 681 /* get the new To:, based on the old header,
 682  * result is newly allocated or NULL in case of error
 683  * */
 684 static gchar*
 685 get_new_to (TnyMsg *msg, TnyHeader *header, const gchar* from,
 686             ModestTnyMsgReplyMode reply_mode)
 687 {
 688         const gchar* old_reply_to;
 689         const gchar* old_from;
 690         gchar* new_to;
 691
 692         /* according to RFC2369 (http://www.faqs.org/rfcs/rfc2369.html), we
 693          * can identify Mailing-List posts by the List-Help header.
 694          * for mailing lists, both the Reply-To: and From: should be included
 695          * in the new To:; for now, we're ignoring List-Post
 696          */
 697         gchar* list_help = modest_tny_msg_get_header (msg, "List-Help");
 698         gboolean is_mailing_list = (list_help != NULL);
 699         g_free (list_help);
 700
 701
 702         /* reply to sender, use ReplyTo or From */
 703         //old_reply_to = tny_header_get_replyto (header);
 704         old_reply_to = modest_tny_msg_get_header (msg, "Reply-To");
 705         old_from     = tny_header_get_from (header);
 706
 707         if (!old_from &&  !old_reply_to) {
 708                 g_warning ("%s: failed to get either Reply-To: or From: from header",
 709                            __FUNCTION__);
 710                 return NULL;
 711         }
 712
 713         /* for mailing lists, use both Reply-To and From if we did a
 714          * 'Reply All:'
 715          * */
 716         if (is_mailing_list && reply_mode == MODEST_TNY_MSG_REPLY_MODE_ALL &&
 717             old_reply_to && old_from && strcmp (old_from, old_reply_to) != 0)
 718                 new_to = g_strjoin (",", old_reply_to, old_from, NULL);
 719         else
 720                 /* otherwise use either Reply-To: (preferred) or From: */
 721                 new_to = g_strdup (old_reply_to ? old_reply_to : old_from);
 722
 723         /* in case of ReplyAll, we need to add the Recipients in the old To: */
 724         if (reply_mode == MODEST_TNY_MSG_REPLY_MODE_ALL) {
 725                 const gchar *old_to = tny_header_get_to (header);
 726                 if (!old_to)
 727                         g_warning ("%s: no To: address found in source mail",
 728                                    __FUNCTION__);
 729                 else {
 730                         /* append the old To: */
 731                         gchar *tmp = g_strjoin (",", new_to, old_to, NULL);
 732                         g_free (new_to);
 733                         new_to = tmp;
 734                 }
 735
 736                 /* now, strip me (the new From:) from the new_to, but only if
 737                  * there are >1 addresses there */
 738                 if (count_addresses (new_to) > 1) {
 739                         gchar *tmp = modest_text_utils_remove_address (new_to, from);
 740                         g_free (new_to);
 741                         new_to = tmp;
 742                 }
 743
 744                 /* remove duplicate entries */
 745                 gchar *tmp = modest_text_utils_remove_duplicate_addresses (new_to);
 746                 g_free (new_to);
 747                 new_to = tmp;
 748         }
 749
 750         return new_to;
 751 }
 752
 753
 754 /* get the new Cc:, based on the old header,
 755  * result is newly allocated or NULL in case of error */
 756 static gchar*
 757 get_new_cc (TnyHeader *header, const gchar* from)
 758 {
 759         const gchar *old_cc;
 760
 761         old_cc = tny_header_get_cc (header);
 762         if (!old_cc)
 763                 return NULL;
 764
 765         /* remove me (the new From:) from the Cc: list */
 766         return modest_text_utils_remove_address (old_cc, from);
 767 }
 768
 769
 770 TnyMsg*
 771 modest_tny_msg_create_reply_msg (TnyMsg *msg,
 772                                  TnyHeader *header,
 773                                  const gchar *from,
 774                                  const gchar *signature,
 775                                  ModestTnyMsgReplyType reply_type,
 776                                  ModestTnyMsgReplyMode reply_mode)
 777 {
 778         TnyMsg *new_msg = NULL;
 779         TnyHeader *new_header;
 780         gchar *new_to, *new_cc = NULL;
 781         TnyList *parts = NULL;
 782         GList *attachments_list = NULL;
 783
 784         g_return_val_if_fail (msg && TNY_IS_MSG(msg), NULL);
 785
 786         /* Add attachments */
 787         if (msg != NULL) {
 788                 parts = TNY_LIST (tny_simple_list_new());
 789                 tny_mime_part_get_parts (TNY_MIME_PART (msg), parts);
 790                 tny_list_foreach (parts, add_if_attachment, &attachments_list);
 791         }
 792
 793         new_msg = create_reply_forward_mail (msg, header, from, signature, TRUE, reply_type,
 794                                              attachments_list);
 795         if (attachments_list) {
 796                 g_list_foreach (attachments_list, (GFunc) g_object_unref, NULL);
 797                 g_list_free (attachments_list);
 798         }
 799         if (parts)
 800                 g_object_unref (G_OBJECT (parts));
 801
 802         /* Fill the header */
 803         if (header)
 804                 g_object_ref (header);
 805         else
 806                 header = tny_msg_get_header (msg);
 807
 808
 809         new_header = tny_msg_get_header(new_msg);
 810         new_to = get_new_to (msg, header, from, reply_mode);
 811         if (!new_to)
 812                 g_warning ("%s: failed to get new To:", __FUNCTION__);
 813         else {
 814                 tny_header_set_to (new_header, new_to);
 815                 g_free (new_to);
 816         }
 817         new_cc = get_new_cc (header, from);
 818         if (new_cc) {
 819                 tny_header_set_cc (new_header, new_cc);
 820                 g_free (new_cc);
 821         }
 822
 823         /* Clean */
 824         g_object_unref (G_OBJECT (new_header));
 825         g_object_unref (G_OBJECT (header));
 826
 827         return new_msg;
 828 }
 829
 830
 831 static gboolean
 832 is_ascii(const gchar *s)
 833 {
 834         if (!s)
 835                 return TRUE;
 836         while (s[0]) {
 837                 if (s[0] & 128 || s[0] < 32)
 838                         return FALSE;
 839                 s++;
 840         }
 841         return TRUE;
 842 }
 843
 844 static char *
 845 get_content_type(const gchar *s)
 846 {
 847         GString *type;
 848
 849         type = g_string_new("text/plain");
 850         if (!is_ascii(s)) {
 851                 if (g_utf8_validate(s, -1, NULL)) {
 852                         g_string_append(type, "; charset=\"utf-8\"");
 853                 } else {
 854                         /* it should be impossible to reach this, but better safe than sorry */
 855                         g_warning("invalid utf8 in message");
 856                         g_string_append(type, "; charset=\"latin1\"");
 857                 }
 858         }
 859         return g_string_free(type, FALSE);
 860 }