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