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