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                                 if (add_inline) {
 316                                         tny_mime_part_set_header_pair (attachment_part, "Content-Disposition",
 317                                                                        "inline");
 318                                 } else {
 319                                         const gchar *filename;
 320                                         filename = tny_mime_part_get_filename (old_attachment);
 321                                         if (filename)
 322                                                 tny_mime_part_set_filename (attachment_part, filename);
 323                                         else
 324                                                 tny_mime_part_set_header_pair (attachment_part, "Content-Disposition",
 325                                                                                "attachment");
 326                                 }
 327                                 tny_mime_part_set_transfer_encoding (TNY_MIME_PART (attachment_part), "base64");
 328                                 ret = tny_mime_part_add_part (TNY_MIME_PART (part), attachment_part);
 329                                 if (old_cid)
 330                                         tny_mime_part_set_content_id (attachment_part, old_cid);
 331                                 g_object_unref (attachment_part);
 332                         }
 333                 }
 334         }
 335 }
 336
 337 static void
 338 add_images (TnyMsg *msg, GList *images_list, GError **err)
 339 {
 340         TnyMimePart *related_part = NULL;
 341         const gchar *content_type;
 342
 343         content_type = tny_mime_part_get_content_type (TNY_MIME_PART (msg));
 344
 345         if ((content_type != NULL) && !strcasecmp (content_type, "multipart/related")) {
 346                 related_part = g_object_ref (msg);
 347         } else if ((content_type != NULL) && !strcasecmp (content_type, "multipart/mixed")) {
 348                 TnyList *parts = TNY_LIST (tny_simple_list_new ());
 349                 TnyIterator *iter = NULL;
 350                 tny_mime_part_get_parts (TNY_MIME_PART (msg), parts);
 351                 iter = tny_list_create_iterator (parts);
 352
 353                 while (!tny_iterator_is_done (iter)) {
 354                         TnyMimePart *part = TNY_MIME_PART (tny_iterator_get_current (iter));
 355                         if (part && !g_strcasecmp (tny_mime_part_get_content_type (part), "multipart/related")) {
 356                                 related_part = part;
 357                                 break;
 358                         } else {
 359                                 g_object_unref (part);
 360                         }
 361                         tny_iterator_next (iter);
 362                 }
 363                 g_object_unref (iter);
 364                 g_object_unref (parts);
 365         }
 366
 367         if (related_part != NULL) {
 368                 /* TODO: attach images in their proper place */
 369                 add_attachments (related_part, images_list, TRUE, err);
 370                 g_object_unref (related_part);
 371         }
 372 }
 373
 374
 375 gchar *
 376 modest_tny_msg_get_body (TnyMsg *msg, gboolean want_html, gboolean *is_html)
 377 {
 378         TnyStream *stream;
 379         TnyMimePart *body;
 380         GtkTextBuffer *buf;
 381         GtkTextIter start, end;
 382         gchar *to_quote;
 383         gboolean result_was_html = TRUE;
 384
 385         g_return_val_if_fail (msg && TNY_IS_MSG(msg), NULL);
 386
 387         body = modest_tny_msg_find_body_part(msg, want_html);
 388         if (!body)
 389                 return NULL;
 390
 391         buf = gtk_text_buffer_new (NULL);
 392         stream = TNY_STREAM (tny_gtk_text_buffer_stream_new (buf));
 393         tny_stream_reset (stream);
 394         tny_mime_part_decode_to_stream (body, stream, NULL);
 395         tny_stream_reset (stream);
 396
 397         gtk_text_buffer_get_bounds (buf, &start, &end);
 398         to_quote = gtk_text_buffer_get_text (buf, &start, &end, FALSE);
 399         if (tny_mime_part_content_type_is (body, "text/plain")) {
 400                 gchar *to_quote_converted = modest_text_utils_convert_to_html (to_quote);
 401                 g_free (to_quote);
 402                 to_quote = to_quote_converted;
 403                 result_was_html = FALSE;
 404         }
 405
 406         g_object_unref (buf);
 407         g_object_unref (G_OBJECT(stream));
 408         g_object_unref (G_OBJECT(body));
 409
 410         if (is_html != NULL)
 411                 *is_html = result_was_html;
 412
 413         return to_quote;
 414 }
 415
 416
 417 TnyMimePart*
 418 modest_tny_msg_find_body_part_from_mime_part (TnyMimePart *msg, gboolean want_html)
 419 {
 420         const gchar *desired_mime_type = want_html ? "text/html" : "text/plain";
 421         TnyMimePart *part = NULL;
 422         TnyList *parts = NULL;
 423         TnyIterator *iter = NULL;
 424         gchar *header_content_type;
 425         gchar *header_content_type_lower = NULL;
 426
 427         if (!msg)
 428                 return NULL;
 429
 430         /* If it's an application multipart, then we don't get into as we don't
 431          * support them (for example application/sml or wap messages */
 432         header_content_type = modest_tny_mime_part_get_header_value (msg, "Content-Type");
 433         if (header_content_type) {
 434                 header_content_type = g_strstrip (header_content_type);
 435                 header_content_type_lower = g_ascii_strdown (header_content_type, -1);
 436         }
 437         if (header_content_type_lower &&
 438             g_str_has_prefix (header_content_type_lower, "multipart/") &&
 439             !g_str_has_prefix (header_content_type_lower, "multipart/signed") &&
 440             strstr (header_content_type_lower, "application/")) {
 441                 g_free (header_content_type_lower);
 442                 g_free (header_content_type);
 443                 return NULL;
 444         }
 445         g_free (header_content_type_lower);
 446         g_free (header_content_type);
 447
 448         parts = TNY_LIST (tny_simple_list_new());
 449         tny_mime_part_get_parts (TNY_MIME_PART (msg), parts);
 450
 451         iter  = tny_list_create_iterator(parts);
 452
 453         /* no parts? assume it's single-part message */
 454         if (tny_iterator_is_done(iter)) {
 455                 gchar *content_type;
 456                 gchar *content_type_lower;
 457                 gboolean is_text_part;
 458                 g_object_unref (G_OBJECT(iter));
 459                 content_type = g_strdup (tny_mime_part_get_content_type (msg));
 460                 if (content_type == NULL)
 461                         return NULL;
 462                 content_type = g_strstrip (content_type);
 463                 content_type_lower = g_ascii_strdown (content_type, -1);
 464                 g_free (content_type);
 465                 is_text_part = g_str_has_prefix (content_type_lower, "text/");
 466                 g_free (content_type_lower);
 467                 /* if this part cannot be a supported body return NULL */
 468                 if (!is_text_part) {
 469                         return NULL;
 470                 } else {
 471                         return TNY_MIME_PART (g_object_ref(G_OBJECT(msg)));
 472                 }
 473         } else {
 474                 do {
 475                         gchar *tmp, *content_type = NULL;
 476                         gboolean has_content_disp_name = FALSE;
 477
 478                         part = TNY_MIME_PART(tny_iterator_get_current (iter));
 479
 480                         if (!part) {
 481                                 g_warning ("%s: not a valid mime part", __FUNCTION__);
 482                                 continue;
 483                         }
 484
 485                         /* it's a message --> ignore */
 486                         if (part && TNY_IS_MSG (part)) {
 487                                 g_object_unref (part);
 488                                 tny_iterator_next (iter);
 489                                 continue;
 490                         }
 491
 492                         /* we need to strdown the content type, because
 493                          * tny_mime_part_has_content_type does not do it...
 494                          */
 495                         content_type = g_ascii_strdown (tny_mime_part_get_content_type (part), -1);
 496
 497                         /* mime-parts with a content-disposition header (either 'inline' or 'attachment')
 498                          * and a 'name=' thingy cannot be body parts
 499                          */
 500
 501                         tmp = modest_tny_mime_part_get_header_value (part, "Content-Disposition");
 502                         if (tmp) {
 503                                 gchar *content_disp = g_ascii_strdown(tmp, -1);
 504                                 g_free (tmp);
 505                                 has_content_disp_name = g_strstr_len (content_disp, strlen(content_disp), "name=") != NULL;
 506                                 g_free (content_disp);
 507                         }
 508
 509                         if (g_str_has_prefix (content_type, desired_mime_type) && !has_content_disp_name) {
 510                                 /* we found the desired mime-type! */
 511                                 g_free (content_type);
 512                                 break;
 513
 514                         } else  if (g_str_has_prefix(content_type, "multipart")) {
 515
 516                                 /* multipart? recurse! */
 517                                 g_object_unref (part);
 518                                 g_free (content_type);
 519                                 part = modest_tny_msg_find_body_part_from_mime_part (part, want_html);
 520                                 if (part)
 521                                         break;
 522                         } else
 523                                 g_free (content_type);
 524
 525                         if (part) {
 526                                 g_object_unref (G_OBJECT(part));
 527                                 part = NULL;
 528                         }
 529
 530                         tny_iterator_next (iter);
 531
 532                 } while (!tny_iterator_is_done(iter));
 533         }
 534
 535         g_object_unref (G_OBJECT(iter));
 536         g_object_unref (G_OBJECT(parts));
 537
 538         /* if were trying to find an HTML part and couldn't find it,
 539          * try to find a text/plain part instead
 540          */
 541         if (!part && want_html)
 542                 return modest_tny_msg_find_body_part_from_mime_part (msg, FALSE);
 543         else
 544                 return part; /* this maybe NULL, this is not an error; some message just don't have a body
 545                               * part */
 546 }
 547
 548
 549 TnyMimePart*
 550 modest_tny_msg_find_body_part (TnyMsg *msg, gboolean want_html)
 551 {
 552         g_return_val_if_fail (msg && TNY_IS_MSG(msg), NULL);
 553
 554         return modest_tny_msg_find_body_part_from_mime_part (TNY_MIME_PART(msg),
 555                                                              want_html);
 556 }
 557
 558
 559 #define MODEST_TNY_MSG_PARENT_UID "parent-uid"
 560
 561 static TnyMsg *
 562 create_reply_forward_mail (TnyMsg *msg, TnyHeader *header, const gchar *from,
 563                            const gchar *signature, gboolean is_reply,
 564                            guint type /*ignored*/, GList *attachments)
 565 {
 566         TnyMsg *new_msg;
 567         TnyHeader *new_header;
 568         gchar *old_subject;
 569         gchar *new_subject;
 570         TnyMimePart *body = NULL;
 571         ModestFormatter *formatter;
 572         gchar *subject_prefix;
 573         gboolean no_text_part;
 574
 575         if (header)
 576                 g_object_ref (header);
 577         else
 578                 header = tny_msg_get_header (msg);
 579
 580         /* Get body from original msg. Always look for the text/plain
 581            part of the message to create the reply/forwarded mail */
 582         if (msg != NULL)
 583                 body   = modest_tny_msg_find_body_part (msg, FALSE);
 584
 585         if (modest_conf_get_bool (modest_runtime_get_conf (), MODEST_CONF_PREFER_FORMATTED_TEXT,
 586                                   NULL))
 587                 formatter = modest_formatter_new ("text/html", signature);
 588         else
 589                 formatter = modest_formatter_new ("text/plain", signature);
 590
 591
 592         /* if we don't have a text-part */
 593         no_text_part = (!body) || (strcmp (tny_mime_part_get_content_type (body), "text/html")==0);
 594
 595         /* when we're reply, include the text part if we have it, or nothing otherwise. */
 596         if (is_reply)
 597                 new_msg = modest_formatter_quote  (formatter, no_text_part ? NULL: body, header,
 598                                                     attachments);
 599         else {
 600                 /* for attachements; inline if there is a text part, and include the
 601                  * full old mail if there was none */
 602                 if (no_text_part) {
 603                         new_msg = modest_formatter_attach (formatter, msg, header);
 604                 } else {
 605                         new_msg = modest_formatter_inline  (formatter, body, header,
 606                                                             attachments);
 607                 }
 608         }
 609
 610         g_object_unref (G_OBJECT(formatter));
 611         if (body)
 612                 g_object_unref (G_OBJECT(body));
 613
 614         /* Fill the header */
 615         new_header = tny_msg_get_header (new_msg);
 616         tny_header_set_from (new_header, from);
 617         tny_header_set_replyto (new_header, from);
 618
 619         /* Change the subject */
 620         if (is_reply)
 621                 subject_prefix = g_strconcat (_("mail_va_re"), ":", NULL);
 622         else
 623                 subject_prefix = g_strconcat (_("mail_va_fw"), ":", NULL);
 624         old_subject = tny_header_dup_subject (header);
 625         new_subject =
 626                 (gchar *) modest_text_utils_derived_subject (old_subject,
 627                                                              subject_prefix);
 628         g_free (old_subject);
 629         g_free (subject_prefix);
 630         tny_header_set_subject (new_header, (const gchar *) new_subject);
 631         g_free (new_subject);
 632
 633         /* get the parent uid, and set it as a gobject property on the new msg */
 634         if (new_msg) {
 635                 gchar* parent_uid = modest_tny_folder_get_header_unique_id (header);
 636                 g_object_set_data_full (G_OBJECT(new_msg), MODEST_TNY_MSG_PARENT_UID,
 637                                         parent_uid, g_free);
 638         }
 639
 640         /* set modest as the X-Mailer
 641          * we could this in the platform factory, but then the header
 642          * would show up before all the others.
 643          */
 644         tny_mime_part_set_header_pair (TNY_MIME_PART (msg), "X-Mailer", "Modest "
 645                                        VERSION);
 646
 647         /* Clean */
 648         g_object_unref (G_OBJECT (new_header));
 649         g_object_unref (G_OBJECT (header));
 650         /* ugly to unref it here instead of in the calling func */
 651
 652         if (!is_reply & !no_text_part) {
 653                 add_attachments (TNY_MIME_PART (new_msg), attachments, FALSE, NULL);
 654         }
 655
 656         return new_msg;
 657 }
 658
 659 const gchar*
 660 modest_tny_msg_get_parent_uid (TnyMsg *msg)
 661 {
 662         g_return_val_if_fail (msg && TNY_IS_MSG(msg), NULL);
 663
 664         return g_object_get_data (G_OBJECT(msg), MODEST_TNY_MSG_PARENT_UID);
 665 }
 666
 667
 668
 669 static void
 670 add_if_attachment (gpointer data, gpointer user_data)
 671 {
 672         TnyMimePart *part;
 673         GList **attachments_list;
 674
 675         part = TNY_MIME_PART (data);
 676         attachments_list = ((GList **) user_data);
 677
 678         if ((tny_mime_part_is_attachment (part))||(TNY_IS_MSG (part))) {
 679                 *attachments_list = g_list_prepend (*attachments_list, part);
 680                 g_object_ref (part);
 681         }
 682 }
 683
 684 TnyMsg*
 685 modest_tny_msg_create_forward_msg (TnyMsg *msg,
 686                                    const gchar *from,
 687                                    const gchar *signature,
 688                                    ModestTnyMsgForwardType forward_type)
 689 {
 690         TnyMsg *new_msg;
 691         TnyList *parts = NULL;
 692         GList *attachments_list = NULL;
 693
 694         g_return_val_if_fail (msg && TNY_IS_MSG(msg), NULL);
 695
 696         /* Add attachments */
 697         parts = TNY_LIST (tny_simple_list_new());
 698         tny_mime_part_get_parts (TNY_MIME_PART (msg), parts);
 699         tny_list_foreach (parts, add_if_attachment, &attachments_list);
 700
 701         new_msg = create_reply_forward_mail (msg, NULL, from, signature, FALSE, forward_type,
 702                                              attachments_list);
 703
 704         /* Clean */
 705         if (attachments_list) {
 706                 g_list_foreach (attachments_list, (GFunc) g_object_unref, NULL);
 707                 g_list_free (attachments_list);
 708         }
 709         g_object_unref (G_OBJECT (parts));
 710
 711         return new_msg;
 712 }
 713
 714
 715
 716 static gint
 717 count_addresses (const gchar* addresses)
 718 {
 719         gint count = 1;
 720
 721         if (!addresses)
 722                 return 0;
 723
 724         while (*addresses) {
 725                 if (*addresses == ',' || *addresses == ';')
 726                         ++count;
 727                 ++addresses;
 728         }
 729
 730         return count;
 731 }
 732
 733
 734 /* get the new To:, based on the old header,
 735  * result is newly allocated or NULL in case of error
 736  * */
 737 static gchar*
 738 get_new_to (TnyMsg *msg, TnyHeader *header, const gchar* from,
 739             ModestTnyMsgReplyMode reply_mode)
 740 {
 741         const gchar* old_reply_to;
 742         gchar* old_from;
 743         gchar* new_to;
 744
 745         /* according to RFC2369 (http://www.faqs.org/rfcs/rfc2369.html), we
 746          * can identify Mailing-List posts by the List-Help header.
 747          * for mailing lists, both the Reply-To: and From: should be included
 748          * in the new To:; for now, we're ignoring List-Post
 749          */
 750         gchar* list_help = modest_tny_mime_part_get_header_value (TNY_MIME_PART(msg),
 751                                                                   "List-Help");
 752         gboolean is_mailing_list = (list_help != NULL);
 753         g_free (list_help);
 754
 755
 756         /* reply to sender, use ReplyTo or From */
 757         //old_reply_to = tny_header_get_replyto (header);
 758         old_reply_to = modest_tny_mime_part_get_header_value (TNY_MIME_PART(msg),
 759                                                               "Reply-To");
 760         old_from     = tny_header_dup_from (header);
 761
 762         if (!old_from &&  !old_reply_to) {
 763                 g_warning ("%s: failed to get either Reply-To: or From: from header",
 764                            __FUNCTION__);
 765                 return NULL;
 766         }
 767
 768         /* for mailing lists, use both Reply-To and From if we did a
 769          * 'Reply All:'
 770          * */
 771         if (is_mailing_list && reply_mode == MODEST_TNY_MSG_REPLY_MODE_ALL &&
 772             old_reply_to && old_from && strcmp (old_from, old_reply_to) != 0)
 773                 new_to = g_strjoin (",", old_reply_to, old_from, NULL);
 774         else
 775                 /* otherwise use either Reply-To: (preferred) or From: */
 776                 new_to = g_strdup (old_reply_to ? old_reply_to : old_from);
 777         g_free (old_from);
 778
 779         /* in case of ReplyAll, we need to add the Recipients in the old To: */
 780         if (reply_mode == MODEST_TNY_MSG_REPLY_MODE_ALL) {
 781                 gchar *old_to = tny_header_dup_to (header);
 782                 if (!old_to)
 783                         g_warning ("%s: no To: address found in source mail",
 784                                    __FUNCTION__);
 785                 else {
 786                         /* append the old To: */
 787                         gchar *tmp = g_strjoin (",", new_to, old_to, NULL);
 788                         g_free (new_to);
 789                         new_to = tmp;
 790                         g_free (old_to);
 791                 }
 792
 793                 /* remove duplicate entries */
 794                 gchar *tmp = modest_text_utils_remove_duplicate_addresses (new_to);
 795                 g_free (new_to);
 796                 new_to = tmp;
 797
 798                 /* now, strip me (the new From:) from the new_to, but only if
 799                  * there are >1 addresses there */
 800                 if (count_addresses (new_to) > 1) {
 801                         gchar *tmp = modest_text_utils_remove_address (new_to, from);
 802                         g_free (new_to);
 803                         new_to = tmp;
 804                 }
 805         }
 806
 807         return new_to;
 808 }
 809
 810
 811 /* get the new Cc:, based on the old header,
 812  * result is newly allocated or NULL in case of error */
 813 static gchar*
 814 get_new_cc (TnyHeader *header, const gchar* from)
 815 {
 816         gchar *old_cc;
 817         gchar *result;
 818
 819         old_cc = tny_header_dup_cc (header);
 820         if (!old_cc)
 821                 return NULL;
 822
 823         /* remove me (the new From:) from the Cc: list */
 824         result =  modest_text_utils_remove_address (old_cc, from);
 825         g_free (old_cc);
 826         return result;
 827 }
 828
 829
 830 TnyMsg*
 831 modest_tny_msg_create_reply_msg (TnyMsg *msg,
 832                                  TnyHeader *header,
 833                                  const gchar *from,
 834                                  const gchar *signature,
 835                                  ModestTnyMsgReplyType reply_type,
 836                                  ModestTnyMsgReplyMode reply_mode)
 837 {
 838         TnyMsg *new_msg = NULL;
 839         TnyHeader *new_header;
 840         gchar *new_to = NULL;
 841         TnyList *parts = NULL;
 842         GList *attachments_list = NULL;
 843
 844         g_return_val_if_fail (msg && TNY_IS_MSG(msg), NULL);
 845
 846         parts = TNY_LIST (tny_simple_list_new());
 847         tny_mime_part_get_parts (TNY_MIME_PART (msg), parts);
 848         tny_list_foreach (parts, add_if_attachment, &attachments_list);
 849
 850         new_msg = create_reply_forward_mail (msg, header, from, signature, TRUE, reply_type,
 851                                              attachments_list);
 852         if (attachments_list != NULL) {
 853                 g_list_foreach (attachments_list, (GFunc) g_object_unref, NULL);
 854                 g_list_free (attachments_list);
 855         }
 856         if (parts)
 857                 g_object_unref (G_OBJECT (parts));
 858
 859         /* Fill the header */
 860         if (header)
 861                 g_object_ref (header);
 862         else
 863                 header = tny_msg_get_header (msg);
 864
 865
 866         new_header = tny_msg_get_header(new_msg);
 867         new_to = get_new_to (msg, header, from, reply_mode);
 868         if (!new_to)
 869                 g_warning ("%s: failed to get new To:", __FUNCTION__);
 870         else {
 871                 tny_header_set_to (new_header, new_to);
 872                 g_free (new_to);
 873         }
 874
 875         if (reply_mode == MODEST_TNY_MSG_REPLY_MODE_ALL) {
 876                 gchar *new_cc = get_new_cc (header, from);
 877                 if (new_cc) {
 878                         tny_header_set_cc (new_header, new_cc);
 879                         g_free (new_cc);
 880                 }
 881         }
 882
 883         /* Clean */
 884         g_object_unref (G_OBJECT (new_header));
 885         g_object_unref (G_OBJECT (header));
 886
 887         return new_msg;
 888 }
 889
 890
 891 static gboolean
 892 is_ascii(const gchar *s)
 893 {
 894         if (!s)
 895                 return TRUE;
 896         while (s[0]) {
 897                 if (s[0] & 128 || s[0] < 32)
 898                         return FALSE;
 899                 s++;
 900         }
 901         return TRUE;
 902 }
 903
 904 static char *
 905 get_content_type(const gchar *s)
 906 {
 907         GString *type;
 908
 909         type = g_string_new("text/plain");
 910         if (!is_ascii(s)) {
 911                 if (g_utf8_validate(s, -1, NULL)) {
 912                         g_string_append(type, "; charset=\"utf-8\"");
 913                 } else {
 914                         /* it should be impossible to reach this, but better safe than sorry */
 915                         g_warning("invalid utf8 in message");
 916                         g_string_append(type, "; charset=\"latin1\"");
 917                 }
 918         }
 919         return g_string_free(type, FALSE);
 920 }
 921
 922 guint64
 923 modest_tny_msg_estimate_size (const gchar *plain_body, const gchar *html_body,
 924                               guint64 parts_count,
 925                               guint64 parts_size)
 926 {
 927         guint64 result;
 928
 929         /* estimation of headers size */
 930         result = 1024;
 931
 932         /* We add a 20% of size due to the increase in 7bit encoding */
 933         if (plain_body) {
 934                 result += strlen (plain_body) * 120 / 100;
 935         }
 936         if (html_body) {
 937                 result += strlen (html_body) * 120 / 100;
 938         }
 939
 940         /* 256 bytes per additional part because of their headers */
 941         result += parts_count * 256;
 942
 943         /* 150% of increase per encoding */
 944         result += parts_size * 3 / 2;
 945
 946         return result;
 947 }