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,
  65                     const gchar *references, const gchar *in_reply_to,
  66                     const gchar *body,
  67                     GList *attachments, gint *attached, GError **err)
  68 {
  69         TnyMsg *new_msg;
  70         TnyHeader *header;
  71         gchar *content_type;
  72         gint tmp_attached = 0;
  73
  74         /* Create new msg */
  75         new_msg = modest_formatter_create_message (NULL, TRUE, (attachments != NULL), FALSE);
  76         header  = tny_msg_get_header (new_msg);
  77
  78         if ((from != NULL) && (strlen(from) > 0)) {
  79                 tny_header_set_from (TNY_HEADER (header), from);
  80                 tny_header_set_replyto (TNY_HEADER (header), from);
  81         }
  82         if ((mailto != NULL) && (strlen(mailto) > 0)) {
  83                 gchar *removed_to = modest_text_utils_remove_duplicate_addresses (mailto);
  84                 tny_header_set_to (TNY_HEADER (header), removed_to);
  85                 g_free (removed_to);
  86         }
  87         if ((cc != NULL) && (strlen(cc) > 0))
  88                 tny_header_set_cc (TNY_HEADER (header), cc);
  89         if ((bcc != NULL) && (strlen(bcc) > 0))
  90                 tny_header_set_bcc (TNY_HEADER (header), bcc);
  91
  92         if ((subject != NULL) && (strlen(subject) > 0))
  93                 tny_header_set_subject (TNY_HEADER (header), subject);
  94
  95         content_type = get_content_type(body);
  96
  97         /* set modest as the X-Mailer
  98          * we could this in the platform factory, but then the header
  99          * would show up before all the others.
 100          */
 101         tny_mime_part_set_header_pair (TNY_MIME_PART (new_msg), "X-Mailer", "Modest "
 102                                        VERSION);
 103
 104         if (references)
 105                 tny_mime_part_set_header_pair (TNY_MIME_PART (new_msg), "References", references);
 106
 107         if (in_reply_to)
 108                 tny_mime_part_set_header_pair (TNY_MIME_PART (new_msg), "In-Reply-To", in_reply_to);
 109
 110         /* Add the body of the new mail */
 111         /* This is needed even if body is NULL or empty. */
 112         add_body_part (new_msg, body, content_type);
 113         g_free (content_type);
 114
 115         /* Add attachments */
 116         if (attachments)
 117                 tmp_attached = add_attachments (TNY_MIME_PART (new_msg), attachments, FALSE, err);
 118         if (attached)
 119                 *attached = tmp_attached;
 120         if (header)
 121                 g_object_unref(header);
 122
 123         return new_msg;
 124 }
 125
 126 TnyMsg*
 127 modest_tny_msg_new_html_plain (const gchar* mailto, const gchar* from, const gchar *cc,
 128                                const gchar *bcc, const gchar* subject,
 129                                const gchar *references, const gchar *in_reply_to,
 130                                const gchar *html_body, const gchar *plain_body,
 131                                GList *attachments, GList *images, gint *attached, GError **err)
 132 {
 133         TnyMsg *new_msg;
 134         TnyHeader *header;
 135         gchar *content_type;
 136         gint tmp_attached;
 137
 138         /* Create new msg */
 139         new_msg = modest_formatter_create_message (NULL, FALSE, (attachments != NULL), (images != NULL));
 140         header  = tny_msg_get_header (new_msg);
 141
 142         if ((from != NULL) && (strlen(from) > 0)) {
 143                 tny_header_set_from (TNY_HEADER (header), from);
 144                 tny_header_set_replyto (TNY_HEADER (header), from);
 145         }
 146         if ((mailto != NULL) && (strlen(mailto) > 0))
 147                 tny_header_set_to (TNY_HEADER (header), mailto);
 148         if ((cc != NULL) && (strlen(cc) > 0))
 149                 tny_header_set_cc (TNY_HEADER (header), cc);
 150         if ((bcc != NULL) && (strlen(bcc) > 0))
 151                 tny_header_set_bcc (TNY_HEADER (header), bcc);
 152
 153         if ((subject != NULL) && (strlen(subject) > 0))
 154                 tny_header_set_subject (TNY_HEADER (header), subject);
 155
 156         content_type = get_content_type(plain_body);
 157
 158         /* set modest as the X-Mailer
 159          * we could this in the platform factory, but then the header
 160          * would show up before all the others.
 161          */
 162         tny_mime_part_set_header_pair (TNY_MIME_PART (new_msg), "X-Mailer", "Modest "
 163                                        VERSION);
 164
 165         if (references)
 166                 tny_mime_part_set_header_pair (TNY_MIME_PART (new_msg), "References", references);
 167
 168         if (in_reply_to)
 169                 tny_mime_part_set_header_pair (TNY_MIME_PART (new_msg), "In-Reply-To", in_reply_to);
 170
 171         /* Add the body of the new mail */
 172         add_body_part (new_msg, plain_body, content_type);
 173         add_html_body_part (new_msg, html_body);
 174         g_free (content_type);
 175
 176         /* Add attachments */
 177         tmp_attached = add_attachments (TNY_MIME_PART (new_msg), attachments, FALSE, err);
 178         if (attached)
 179                 *attached = tmp_attached;
 180         add_images (new_msg, images, err);
 181         if (header)
 182                 g_object_unref(header);
 183
 184         return new_msg;
 185 }
 186
 187
 188 /* FIXME: this func copy from modest-mail-operation: refactor */
 189 static TnyMimePart *
 190 add_body_part (TnyMsg *msg,
 191                const gchar *body,
 192                const gchar *content_type)
 193 {
 194         TnyMimePart *text_body_part = NULL;
 195         TnyStream *text_body_stream;
 196
 197         /* Create the stream */
 198         text_body_stream = TNY_STREAM (tny_camel_mem_stream_new_with_buffer
 199                                         (body, (body ? strlen(body) : 0)));
 200
 201         text_body_part = modest_formatter_create_body_part (NULL, msg);
 202
 203         /* Construct MIME part */
 204         tny_stream_reset (text_body_stream);
 205         tny_mime_part_construct (text_body_part,
 206                                  text_body_stream,
 207                                  content_type, "7bit");
 208         tny_stream_reset (text_body_stream);
 209
 210         g_object_unref (G_OBJECT(text_body_part));
 211
 212         /* Clean */
 213         g_object_unref (text_body_stream);
 214
 215         return text_body_part;
 216 }
 217
 218 static TnyMimePart *
 219 add_html_body_part (TnyMsg *msg,
 220                     const gchar *body)
 221 {
 222         TnyMimePart *html_body_part = NULL;
 223         TnyStream *html_body_stream;
 224
 225         /* Create the stream */
 226         html_body_stream = TNY_STREAM (tny_camel_mem_stream_new_with_buffer
 227                                         (body, strlen(body)));
 228
 229         /* Create body part if needed */
 230         html_body_part = modest_formatter_create_body_part (NULL, msg);
 231
 232         /* Construct MIME part */
 233         tny_stream_reset (html_body_stream);
 234         tny_mime_part_construct (html_body_part,
 235                                  html_body_stream,
 236                                  "text/html; charset=utf-8",
 237                                  "7bit"); /* Sometimes it might be needed
 238                                              to make this one a 8bit! */
 239         tny_stream_reset (html_body_stream);
 240
 241         g_object_unref (G_OBJECT(html_body_part));
 242
 243         /* Clean */
 244         g_object_unref (html_body_stream);
 245
 246         return html_body_part;
 247 }
 248
 249 static TnyMimePart *
 250 copy_mime_part (TnyMimePart *part, GError **err)
 251 {
 252         TnyMimePart *result = NULL;
 253         const gchar *attachment_content_type;
 254         const gchar *attachment_filename;
 255         const gchar *attachment_cid;
 256         TnyList *parts;
 257         TnyIterator *iterator;
 258         TnyStream *attachment_stream;
 259         const gchar *enc;
 260         gint ret;
 261
 262         if (TNY_IS_MSG (part)) {
 263                 g_object_ref (part);
 264                 return part;
 265         }
 266
 267         result = tny_platform_factory_new_mime_part (
 268                 modest_runtime_get_platform_factory());
 269
 270         attachment_content_type = tny_mime_part_get_content_type (part);
 271
 272         /* get mime part headers */
 273         attachment_filename = tny_mime_part_get_filename (part);
 274         attachment_cid = tny_mime_part_get_content_id (part);
 275
 276         /* fill the stream */
 277         attachment_stream = tny_mime_part_get_decoded_stream (part);
 278         enc = tny_mime_part_get_transfer_encoding (part);
 279         if (attachment_stream == NULL) {
 280                 if (err != NULL && *err == NULL)
 281                         g_set_error (err, MODEST_MAIL_OPERATION_ERROR, MODEST_MAIL_OPERATION_ERROR_FILE_IO, _("TODO: couldn't retrieve attachment"));
 282                 g_object_unref (result);
 283                 return NULL;
 284         } else {
 285                 ret = tny_stream_reset (attachment_stream);
 286                 ret = tny_mime_part_construct (result,
 287                                                attachment_stream,
 288                                                attachment_content_type,
 289                                                enc);
 290                 ret = tny_stream_reset (attachment_stream);
 291         }
 292
 293         /* set other mime part fields */
 294         tny_mime_part_set_filename (result, attachment_filename);
 295         tny_mime_part_set_content_id (result, attachment_cid);
 296
 297         /* copy subparts */
 298         parts = tny_simple_list_new ();
 299         tny_mime_part_get_parts (part, parts);
 300         iterator = tny_list_create_iterator (parts);
 301         while (!tny_iterator_is_done (iterator)) {
 302                 TnyMimePart *subpart = TNY_MIME_PART (tny_iterator_get_current (iterator));
 303                 if (subpart) {
 304                         const gchar *subpart_cid;
 305                         TnyMimePart *subpart_copy = copy_mime_part (subpart, err);
 306                         if (subpart_copy != NULL) {
 307                                 subpart_cid = tny_mime_part_get_content_id (subpart);
 308                                 tny_mime_part_add_part (result, subpart_copy);
 309                                 if (subpart_cid)
 310                                         tny_mime_part_set_content_id (result, subpart_cid);
 311                                 g_object_unref (subpart_copy);
 312                         }
 313                         g_object_unref (subpart);
 314                 }
 315
 316                 tny_iterator_next (iterator);
 317         }
 318         g_object_unref (iterator);
 319         g_object_unref (parts);
 320         g_object_unref (attachment_stream);
 321
 322         return result;
 323 }
 324
 325 static gint
 326 add_attachments (TnyMimePart *part, GList *attachments_list, gboolean add_inline, GError **err)
 327 {
 328         GList *pos;
 329         TnyMimePart *attachment_part, *old_attachment;
 330         gint ret;
 331         gint attached = 0;
 332
 333         for (pos = (GList *)attachments_list; pos; pos = pos->next) {
 334
 335                 old_attachment = pos->data;
 336                 if (!tny_mime_part_is_purged (old_attachment)) {
 337                         const gchar *old_cid;
 338                         old_cid = tny_mime_part_get_content_id (old_attachment);
 339                         attachment_part = copy_mime_part (old_attachment, err);
 340                         if (attachment_part != NULL) {
 341                                 if (add_inline) {
 342                                         tny_mime_part_set_header_pair (attachment_part, "Content-Disposition",
 343                                                                        "inline");
 344                                 } else {
 345                                         const gchar *filename;
 346                                         filename = tny_mime_part_get_filename (old_attachment);
 347                                         if (filename)
 348                                                 tny_mime_part_set_filename (attachment_part, filename);
 349                                         else
 350                                                 tny_mime_part_set_header_pair (attachment_part, "Content-Disposition",
 351                                                                                "attachment");
 352                                 }
 353                                 tny_mime_part_set_transfer_encoding (TNY_MIME_PART (attachment_part), "base64");
 354                                 ret = tny_mime_part_add_part (TNY_MIME_PART (part), attachment_part);
 355                                 attached++;
 356                                 if (old_cid)
 357                                         tny_mime_part_set_content_id (attachment_part, old_cid);
 358                                 g_object_unref (attachment_part);
 359                         }
 360                 }
 361         }
 362         return attached;
 363 }
 364
 365 static void
 366 add_images (TnyMsg *msg, GList *images_list, GError **err)
 367 {
 368         TnyMimePart *related_part = NULL;
 369         const gchar *content_type;
 370
 371         content_type = tny_mime_part_get_content_type (TNY_MIME_PART (msg));
 372
 373         if ((content_type != NULL) && !strcasecmp (content_type, "multipart/related")) {
 374                 related_part = g_object_ref (msg);
 375         } else if ((content_type != NULL) && !strcasecmp (content_type, "multipart/mixed")) {
 376                 TnyList *parts = TNY_LIST (tny_simple_list_new ());
 377                 TnyIterator *iter = NULL;
 378                 tny_mime_part_get_parts (TNY_MIME_PART (msg), parts);
 379                 iter = tny_list_create_iterator (parts);
 380
 381                 while (!tny_iterator_is_done (iter)) {
 382                         TnyMimePart *part = TNY_MIME_PART (tny_iterator_get_current (iter));
 383                         if (part && !g_strcasecmp (tny_mime_part_get_content_type (part), "multipart/related")) {
 384                                 related_part = part;
 385                                 break;
 386                         }
 387                         if (part)
 388                                 g_object_unref (part);
 389                         tny_iterator_next (iter);
 390                 }
 391                 g_object_unref (iter);
 392                 g_object_unref (parts);
 393         }
 394
 395         if (related_part != NULL) {
 396                 /* TODO: attach images in their proper place */
 397                 add_attachments (related_part, images_list, TRUE, err);
 398                 g_object_unref (related_part);
 399         }
 400 }
 401
 402
 403 gchar *
 404 modest_tny_msg_get_body (TnyMsg *msg, gboolean want_html, gboolean *is_html)
 405 {
 406         TnyStream *stream;
 407         TnyMimePart *body;
 408         GtkTextBuffer *buf;
 409         GtkTextIter start, end;
 410         gchar *to_quote;
 411         gboolean result_was_html = TRUE;
 412
 413         g_return_val_if_fail (msg && TNY_IS_MSG(msg), NULL);
 414
 415         body = modest_tny_msg_find_body_part(msg, want_html);
 416         if (!body)
 417                 return NULL;
 418
 419         buf = gtk_text_buffer_new (NULL);
 420         stream = TNY_STREAM (tny_gtk_text_buffer_stream_new (buf));
 421         tny_stream_reset (stream);
 422         tny_mime_part_decode_to_stream (body, stream, NULL);
 423         tny_stream_reset (stream);
 424
 425         gtk_text_buffer_get_bounds (buf, &start, &end);
 426         to_quote = gtk_text_buffer_get_text (buf, &start, &end, FALSE);
 427         if (tny_mime_part_content_type_is (body, "text/plain")) {
 428                 gchar *to_quote_converted = modest_text_utils_convert_to_html (to_quote);
 429                 g_free (to_quote);
 430                 to_quote = to_quote_converted;
 431                 result_was_html = FALSE;
 432         }
 433
 434         g_object_unref (buf);
 435         g_object_unref (G_OBJECT(stream));
 436         g_object_unref (G_OBJECT(body));
 437
 438         if (is_html != NULL)
 439                 *is_html = result_was_html;
 440
 441         return to_quote;
 442 }
 443
 444
 445 TnyMimePart*
 446 modest_tny_msg_find_body_part_from_mime_part (TnyMimePart *msg, gboolean want_html)
 447 {
 448         const gchar *desired_mime_type = want_html ? "text/html" : "text/plain";
 449         TnyMimePart *part = NULL;
 450         TnyList *parts = NULL;
 451         TnyIterator *iter = NULL;
 452         gchar *header_content_type;
 453         gchar *header_content_type_lower = NULL;
 454
 455         if (!msg)
 456                 return NULL;
 457
 458         /* If it's an application multipart, then we don't get into as we don't
 459          * support them (for example application/sml or wap messages */
 460         header_content_type = modest_tny_mime_part_get_header_value (msg, "Content-Type");
 461         if (header_content_type) {
 462                 header_content_type = g_strstrip (header_content_type);
 463                 header_content_type_lower = g_ascii_strdown (header_content_type, -1);
 464         }
 465         if (header_content_type_lower &&
 466             g_str_has_prefix (header_content_type_lower, "multipart/") &&
 467             !g_str_has_prefix (header_content_type_lower, "multipart/signed") &&
 468             strstr (header_content_type_lower, "application/")) {
 469                 g_free (header_content_type_lower);
 470                 g_free (header_content_type);
 471                 return NULL;
 472         }
 473         g_free (header_content_type_lower);
 474         g_free (header_content_type);
 475
 476         parts = TNY_LIST (tny_simple_list_new());
 477         tny_mime_part_get_parts (TNY_MIME_PART (msg), parts);
 478
 479         iter  = tny_list_create_iterator(parts);
 480
 481         /* no parts? assume it's single-part message */
 482         if (tny_iterator_is_done(iter)) {
 483                 gchar *content_type;
 484                 gboolean is_text_part;
 485                 g_object_unref (G_OBJECT(iter));
 486                 content_type = modest_tny_mime_part_get_content_type (msg);
 487                 if (content_type == NULL)
 488                         return NULL;
 489                 is_text_part =
 490                         g_str_has_prefix (content_type, "text/");
 491                 g_free (content_type);
 492                 /* if this part cannot be a supported body return NULL */
 493                 if (!is_text_part) {
 494                         return NULL;
 495                 } else {
 496                         return TNY_MIME_PART (g_object_ref(G_OBJECT(msg)));
 497                 }
 498         } else {
 499                 do {
 500                         gchar *tmp, *content_type = NULL;
 501                         gboolean has_content_disp_name = FALSE;
 502
 503                         part = TNY_MIME_PART(tny_iterator_get_current (iter));
 504
 505                         if (!part) {
 506                                 g_warning ("%s: not a valid mime part", __FUNCTION__);
 507                                 tny_iterator_next (iter);
 508                                 continue;
 509                         }
 510
 511                         /* it's a message --> ignore */
 512                         if (part && TNY_IS_MSG (part)) {
 513                                 g_object_unref (part);
 514                                 part = NULL;
 515                                 tny_iterator_next (iter);
 516                                 continue;
 517                         }
 518
 519                         /* we need to strdown the content type, because
 520                          * tny_mime_part_has_content_type does not do it...
 521                          */
 522                         content_type = g_ascii_strdown (tny_mime_part_get_content_type (part), -1);
 523
 524                         /* mime-parts with a content-disposition header (either 'inline' or 'attachment')
 525                          * and a 'name=' thingy cannot be body parts
 526                          */
 527
 528                         tmp = modest_tny_mime_part_get_header_value (part, "Content-Disposition");
 529                         if (tmp) {
 530                                 gchar *content_disp = g_ascii_strdown(tmp, -1);
 531                                 g_free (tmp);
 532                                 has_content_disp_name = g_strstr_len (content_disp, strlen(content_disp), "name=") != NULL;
 533                                 g_free (content_disp);
 534                         }
 535
 536                         if (g_str_has_prefix (content_type, desired_mime_type) &&
 537                             !has_content_disp_name &&
 538                             !modest_tny_mime_part_is_attachment_for_modest (part)) {
 539                                 /* we found the desired mime-type! */
 540                                 g_free (content_type);
 541                                 break;
 542
 543                         } else  if (g_str_has_prefix(content_type, "multipart")) {
 544
 545                                 /* multipart? recurse! */
 546                                 g_object_unref (part);
 547                                 g_free (content_type);
 548                                 part = modest_tny_msg_find_body_part_from_mime_part (part, want_html);
 549                                 if (part)
 550                                         break;
 551                         } else
 552                                 g_free (content_type);
 553
 554                         if (part) {
 555                                 g_object_unref (G_OBJECT(part));
 556                                 part = NULL;
 557                         }
 558
 559                         tny_iterator_next (iter);
 560
 561                 } while (!tny_iterator_is_done(iter));
 562         }
 563
 564         g_object_unref (G_OBJECT(iter));
 565         g_object_unref (G_OBJECT(parts));
 566
 567         /* if were trying to find an HTML part and couldn't find it,
 568          * try to find a text/plain part instead
 569          */
 570         if (!part && want_html)
 571                 return modest_tny_msg_find_body_part_from_mime_part (msg, FALSE);
 572         else
 573                 return part; /* this maybe NULL, this is not an error; some message just don't have a body
 574                               * part */
 575 }
 576
 577
 578 TnyMimePart*
 579 modest_tny_msg_find_body_part (TnyMsg *msg, gboolean want_html)
 580 {
 581         g_return_val_if_fail (msg && TNY_IS_MSG(msg), NULL);
 582
 583         return modest_tny_msg_find_body_part_from_mime_part (TNY_MIME_PART(msg),
 584                                                              want_html);
 585 }
 586
 587
 588 #define MODEST_TNY_MSG_PARENT_UID "parent-uid"
 589
 590 static TnyMsg *
 591 create_reply_forward_mail (TnyMsg *msg, TnyHeader *header, const gchar *from,
 592                            const gchar *signature, gboolean is_reply,
 593                            guint type /*ignored*/, GList *attachments)
 594 {
 595         TnyMsg *new_msg;
 596         TnyHeader *new_header;
 597         gchar *old_subject;
 598         gchar *new_subject;
 599         TnyMimePart *body = NULL;
 600         ModestFormatter *formatter;
 601         gchar *subject_prefix;
 602         gboolean no_text_part;
 603         gchar *parent_uid;
 604
 605         if (header)
 606                 g_object_ref (header);
 607         else
 608                 header = tny_msg_get_header (msg);
 609
 610         /* Get body from original msg. Always look for the text/plain
 611            part of the message to create the reply/forwarded mail */
 612         if (msg != NULL)
 613                 body   = modest_tny_msg_find_body_part (msg, FALSE);
 614
 615         if (modest_conf_get_bool (modest_runtime_get_conf (), MODEST_CONF_PREFER_FORMATTED_TEXT,
 616                                   NULL))
 617                 formatter = modest_formatter_new ("text/html", signature);
 618         else
 619                 formatter = modest_formatter_new ("text/plain", signature);
 620
 621
 622         /* if we don't have a text-part */
 623         no_text_part = (!body) || (strcmp (tny_mime_part_get_content_type (body), "text/html")==0);
 624
 625         /* when we're reply, include the text part if we have it, or nothing otherwise. */
 626         if (is_reply)
 627                 new_msg = modest_formatter_quote  (formatter, no_text_part ? NULL: body, header,
 628                                                     attachments);
 629         else {
 630                 /* for attachements; inline if there is a text part, and include the
 631                  * full old mail if there was none */
 632                 if (no_text_part) {
 633                         new_msg = modest_formatter_attach (formatter, msg, header);
 634                 } else {
 635                         new_msg = modest_formatter_inline  (formatter, body, header,
 636                                                             attachments);
 637                 }
 638         }
 639
 640         g_object_unref (G_OBJECT(formatter));
 641         if (body)
 642                 g_object_unref (G_OBJECT(body));
 643
 644         /* Fill the header */
 645         new_header = tny_msg_get_header (new_msg);
 646         tny_header_set_from (new_header, from);
 647         tny_header_set_replyto (new_header, from);
 648
 649         /* Change the subject */
 650         if (is_reply)
 651                 subject_prefix = g_strconcat (_("mail_va_re"), ":", NULL);
 652         else
 653                 subject_prefix = g_strconcat (_("mail_va_fw"), ":", NULL);
 654         old_subject = tny_header_dup_subject (header);
 655         new_subject =
 656                 (gchar *) modest_text_utils_derived_subject (old_subject,
 657                                                              subject_prefix);
 658         g_free (old_subject);
 659         g_free (subject_prefix);
 660         tny_header_set_subject (new_header, (const gchar *) new_subject);
 661         g_free (new_subject);
 662
 663         /* get the parent uid, and set it as a gobject property on the new msg */
 664         parent_uid = modest_tny_folder_get_header_unique_id (header);
 665         g_object_set_data_full (G_OBJECT(new_msg), MODEST_TNY_MSG_PARENT_UID,
 666                                 parent_uid, g_free);
 667
 668         /* set modest as the X-Mailer
 669          * we could this in the platform factory, but then the header
 670          * would show up before all the others.
 671          */
 672         tny_mime_part_set_header_pair (TNY_MIME_PART (msg), "X-Mailer", "Modest "
 673                                        VERSION);
 674
 675         /* Clean */
 676         g_object_unref (G_OBJECT (new_header));
 677         g_object_unref (G_OBJECT (header));
 678         /* ugly to unref it here instead of in the calling func */
 679
 680         if (!is_reply & !no_text_part) {
 681                 add_attachments (TNY_MIME_PART (new_msg), attachments, FALSE, NULL);
 682         }
 683
 684         return new_msg;
 685 }
 686
 687 const gchar*
 688 modest_tny_msg_get_parent_uid (TnyMsg *msg)
 689 {
 690         g_return_val_if_fail (msg && TNY_IS_MSG(msg), NULL);
 691
 692         return g_object_get_data (G_OBJECT(msg), MODEST_TNY_MSG_PARENT_UID);
 693 }
 694
 695 static gchar *get_signed_protocol (TnyMimePart *part)
 696 {
 697         TnyList *header_pairs;
 698         TnyIterator *iterator;
 699         gchar *result = NULL;
 700
 701         header_pairs = TNY_LIST (tny_simple_list_new ());
 702         tny_mime_part_get_header_pairs (part, header_pairs);
 703         iterator = tny_list_create_iterator (header_pairs);
 704
 705         while (!result && !tny_iterator_is_done (iterator)) {
 706                 TnyPair *pair;
 707                 const gchar *name;
 708
 709                 pair = TNY_PAIR (tny_iterator_get_current (iterator));
 710                 name = tny_pair_get_name (pair);
 711                 if (name && !g_ascii_strcasecmp (name, "Content-Type")) {
 712                         const gchar *s;
 713                         s = tny_pair_get_value (pair);
 714                         if (s) {
 715                                 s = strstr (s, "protocol=");
 716                                 if (s) {
 717                                         const gchar *t;
 718                                         s += 9;
 719                                         if (*s == '\"') {
 720                                                 s++;
 721                                                 t = strstr (s, "\"");
 722                                         } else {
 723                                                 t = strstr (s, ";");
 724                                         }
 725                                         result = g_strndup (s, t - s);
 726                                 }
 727                         }
 728                 }
 729
 730                 g_object_unref (pair);
 731                 tny_iterator_next (iterator);
 732         }
 733
 734         g_object_unref (iterator);
 735         g_object_unref (header_pairs);
 736
 737         return result;
 738 }
 739
 740 TnyMimePart *
 741 modest_tny_msg_get_attachments_parent (TnyMsg *msg)
 742 {
 743         TnyMimePart *result;
 744         const gchar *content_type;
 745
 746         result = NULL;
 747
 748         content_type = tny_mime_part_get_content_type (TNY_MIME_PART (msg));
 749         if (content_type && !strcmp (content_type, "multipart/signed")) {
 750                 TnyList *msg_children;
 751                 TnyIterator *iterator;
 752                 gchar *signed_protocol;
 753
 754                 msg_children = TNY_LIST (tny_simple_list_new ());
 755                 tny_mime_part_get_parts (TNY_MIME_PART (msg), msg_children);
 756
 757                 iterator = tny_list_create_iterator (msg_children);
 758                 signed_protocol = get_signed_protocol (TNY_MIME_PART (msg));
 759
 760                 while (!result && !tny_iterator_is_done (iterator)) {
 761                         TnyMimePart *part;
 762
 763                         part = TNY_MIME_PART (tny_iterator_get_current (iterator));
 764                         if (signed_protocol) {
 765                                 const gchar *part_content_type;
 766
 767                                 part_content_type = tny_mime_part_get_content_type (part);
 768                                 if (part_content_type && g_ascii_strcasecmp (part_content_type, signed_protocol)) {
 769                                         result = g_object_ref (part);
 770                                 }
 771                         } else {
 772                                 result = g_object_ref (part);
 773                         }
 774
 775                         g_object_unref (part);
 776                         tny_iterator_next (iterator);
 777                 }
 778
 779                 g_object_unref (iterator);
 780                 g_free (signed_protocol);
 781                 g_object_unref (msg_children);
 782         }
 783         if (result == NULL) {
 784                 result = g_object_ref (msg);
 785         }
 786
 787         return result;
 788 }
 789
 790
 791
 792 static void
 793 add_if_attachment (gpointer data, gpointer user_data)
 794 {
 795         TnyMimePart *part;
 796         GList **attachments_list;
 797
 798         part = TNY_MIME_PART (data);
 799         attachments_list = ((GList **) user_data);
 800
 801         if ((tny_mime_part_is_attachment (part))||(TNY_IS_MSG (part))) {
 802                 *attachments_list = g_list_prepend (*attachments_list, part);
 803                 g_object_ref (part);
 804         }
 805 }
 806
 807 TnyMsg*
 808 modest_tny_msg_create_forward_msg (TnyMsg *msg,
 809                                    const gchar *from,
 810                                    const gchar *signature,
 811                                    ModestTnyMsgForwardType forward_type)
 812 {
 813         TnyMsg *new_msg;
 814         TnyList *parts = NULL;
 815         GList *attachments_list = NULL;
 816         TnyMimePart *part_to_check = NULL;
 817
 818         g_return_val_if_fail (msg && TNY_IS_MSG(msg), NULL);
 819
 820         part_to_check = modest_tny_msg_get_attachments_parent (TNY_MSG (msg));
 821
 822         /* Add attachments */
 823         parts = TNY_LIST (tny_simple_list_new());
 824         tny_mime_part_get_parts (TNY_MIME_PART (part_to_check), parts);
 825         tny_list_foreach (parts, add_if_attachment, &attachments_list);
 826
 827         new_msg = create_reply_forward_mail (msg, NULL, from, signature, FALSE, forward_type,
 828                                              attachments_list);
 829
 830         /* Clean */
 831         if (attachments_list) {
 832                 g_list_foreach (attachments_list, (GFunc) g_object_unref, NULL);
 833                 g_list_free (attachments_list);
 834         }
 835         g_object_unref (G_OBJECT (parts));
 836         g_object_unref (part_to_check);
 837
 838         return new_msg;
 839 }
 840
 841
 842
 843 static gint
 844 count_addresses (const gchar* addresses)
 845 {
 846         gint count = 1;
 847
 848         if (!addresses)
 849                 return 0;
 850
 851         while (*addresses) {
 852                 if (*addresses == ',' || *addresses == ';')
 853                         ++count;
 854                 ++addresses;
 855         }
 856
 857         return count;
 858 }
 859
 860
 861 /* get the new To:, based on the old header,
 862  * result is newly allocated or NULL in case of error
 863  * */
 864 static gchar*
 865 get_new_to (TnyMsg *msg, TnyHeader *header, const gchar* from,
 866             ModestTnyMsgReplyMode reply_mode)
 867 {
 868         gchar* old_reply_to;
 869         gchar* old_from;
 870         gchar* new_to;
 871
 872         /* according to RFC2369 (http://www.faqs.org/rfcs/rfc2369.html), we
 873          * can identify Mailing-List posts by the List-Help header.
 874          * for mailing lists, both the Reply-To: and From: should be included
 875          * in the new To:; for now, we're ignoring List-Post
 876          */
 877         gchar* list_help = modest_tny_mime_part_get_header_value (TNY_MIME_PART(msg),
 878                                                                   "List-Help");
 879         gboolean is_mailing_list = (list_help != NULL);
 880         g_free (list_help);
 881
 882
 883         /* reply to sender, use ReplyTo or From */
 884         old_reply_to = modest_tny_mime_part_get_header_value (TNY_MIME_PART(msg),
 885                                                               "Reply-To");
 886         old_from     = tny_header_dup_from (header);
 887
 888         if (!old_from && !old_reply_to) {
 889                 g_warning ("%s: failed to get either Reply-To: or From: from header",
 890                            __FUNCTION__);
 891                 return NULL;
 892         }
 893
 894         /* for mailing lists, use both Reply-To and From if we did a
 895          * 'Reply All:'
 896          * */
 897         if (is_mailing_list && reply_mode == MODEST_TNY_MSG_REPLY_MODE_ALL &&
 898             old_reply_to && old_from && strcmp (old_from, old_reply_to) != 0)
 899                 new_to = g_strjoin (",", old_reply_to, old_from, NULL);
 900         else
 901                 /* otherwise use either Reply-To: (preferred) or From: */
 902                 new_to = g_strdup (old_reply_to ? old_reply_to : old_from);
 903         g_free (old_from);
 904         g_free (old_reply_to);
 905
 906         /* in case of ReplyAll, we need to add the Recipients in the old To: */
 907         if (reply_mode == MODEST_TNY_MSG_REPLY_MODE_ALL) {
 908                 gchar *old_to = tny_header_dup_to (header);
 909                 if (!old_to)
 910                         g_warning ("%s: no To: address found in source mail",
 911                                    __FUNCTION__);
 912                 else {
 913                         /* append the old To: */
 914                         gchar *tmp = g_strjoin (",", new_to, old_to, NULL);
 915                         g_free (new_to);
 916                         new_to = tmp;
 917                         g_free (old_to);
 918                 }
 919
 920                 /* remove duplicate entries */
 921                 gchar *tmp = modest_text_utils_remove_duplicate_addresses (new_to);
 922                 g_free (new_to);
 923                 new_to = tmp;
 924
 925                 /* now, strip me (the new From:) from the new_to, but only if
 926                  * there are >1 addresses there */
 927                 if (count_addresses (new_to) > 1) {
 928                         gchar *tmp = modest_text_utils_remove_address (new_to, from);
 929                         g_free (new_to);
 930                         new_to = tmp;
 931                 }
 932         }
 933
 934         return new_to;
 935 }
 936
 937
 938 /* get the new Cc:, based on the old header,
 939  * result is newly allocated or NULL in case of error */
 940 static gchar*
 941 get_new_cc (TnyHeader *header, const gchar* from)
 942 {
 943         gchar *old_cc, *result, *dup;
 944
 945         old_cc = tny_header_dup_cc (header);
 946         if (!old_cc)
 947                 return NULL;
 948
 949         /* remove me (the new From:) from the Cc: list */
 950         dup =  modest_text_utils_remove_address (old_cc, from);
 951         result = modest_text_utils_remove_duplicate_addresses (dup);
 952         g_free (dup);
 953         g_free (old_cc);
 954         return result;
 955 }
 956
 957 void
 958 modest_tny_msg_get_references (TnyMsg *msg, gchar **message_id, gchar **references, gchar **in_reply_to)
 959 {
 960         TnyList *headers;
 961         TnyIterator *iterator;
 962         gchar *l_message_id;
 963         gchar *l_references;
 964         gchar *l_in_reply_to;
 965
 966         g_return_if_fail (TNY_IS_MSG (msg));
 967
 968         l_message_id = NULL;
 969         l_references = NULL;
 970         l_in_reply_to = NULL;
 971
 972         headers = TNY_LIST (tny_simple_list_new ());
 973         tny_mime_part_get_header_pairs (TNY_MIME_PART (msg), headers);
 974
 975         iterator = tny_list_create_iterator (headers);
 976         while (!tny_iterator_is_done (iterator)) {
 977                 TnyPair *pair;
 978                 const gchar *name;
 979
 980                 pair = TNY_PAIR (tny_iterator_get_current (iterator));
 981                 name = tny_pair_get_name (pair);
 982                 if (!g_strcasecmp (name, "References")) {
 983                         if (l_references) g_free (l_references);
 984                         l_references = g_strdup (tny_pair_get_value (pair));
 985                 } else if (!g_strcasecmp (name, "In-Reply-To")) {
 986                         if (l_in_reply_to) g_free (l_in_reply_to);
 987                         l_in_reply_to = g_strdup (tny_pair_get_value (pair));
 988                 } else if (!g_strcasecmp (name, "Message-ID")) {
 989                         if (l_message_id) g_free (l_message_id);
 990                         l_message_id = g_strdup (tny_pair_get_value (pair));
 991                 }
 992
 993                 g_object_unref (pair);
 994                 tny_iterator_next (iterator);
 995         }
 996
 997         g_object_unref (iterator);
 998         g_object_unref (headers);
 999
1000         if (message_id) {
1001                 *message_id = l_message_id;
1002         } else {
1003                 g_free (l_message_id);
1004         }
1005
1006         if (in_reply_to) {
1007                 *in_reply_to = l_in_reply_to;
1008         } else {
1009                 g_free (l_in_reply_to);
1010         }
1011
1012         if (references) {
1013                 *references = l_references;
1014         } else {
1015                 g_free (l_references);
1016         }
1017 }
1018
1019 static void
1020 set_references (TnyMsg *reply_msg, TnyMsg *original_msg)
1021 {
1022         gchar *orig_references, *orig_in_reply_to, *orig_message_id;
1023         gchar *references, *in_reply_to;
1024
1025         modest_tny_msg_get_references (original_msg, &orig_message_id, &orig_references, &orig_in_reply_to);
1026
1027         references = NULL;
1028         in_reply_to = NULL;
1029
1030         if (orig_message_id)
1031                 in_reply_to = g_strdup (orig_message_id);
1032
1033         if (orig_references) {
1034                 if (orig_message_id)
1035                         references = g_strconcat (orig_references, "\n        ", orig_message_id, NULL);
1036                 else
1037                         references = g_strdup (orig_references);
1038
1039         } else if (orig_in_reply_to) {
1040                 if (orig_message_id)
1041                         references = g_strconcat (orig_in_reply_to, "\n        ", orig_message_id, NULL);
1042                 else
1043                         references = g_strdup (orig_in_reply_to);
1044         } else if (orig_message_id) {
1045                 references = g_strdup (orig_message_id);
1046         }
1047
1048         g_free (orig_references);
1049         g_free (orig_in_reply_to);
1050         g_free (orig_message_id);
1051
1052         if (in_reply_to) {
1053                 tny_mime_part_set_header_pair (TNY_MIME_PART (reply_msg), "In-Reply-To", in_reply_to);
1054         }
1055         if (references) {
1056                 tny_mime_part_set_header_pair (TNY_MIME_PART (reply_msg), "References", references);
1057         }
1058 }
1059
1060 TnyMsg*
1061 modest_tny_msg_create_reply_msg (TnyMsg *msg,
1062                                  TnyHeader *header,
1063                                  const gchar *from,
1064                                  const gchar *signature,
1065                                  ModestTnyMsgReplyType reply_type,
1066                                  ModestTnyMsgReplyMode reply_mode)
1067 {
1068         TnyMsg *new_msg = NULL;
1069         TnyHeader *new_header;
1070         gchar *new_to = NULL;
1071         TnyList *parts = NULL;
1072         GList *attachments_list = NULL;
1073         TnyMimePart *part_to_check = NULL;
1074
1075         g_return_val_if_fail (msg && TNY_IS_MSG(msg), NULL);
1076
1077         part_to_check = modest_tny_msg_get_attachments_parent (TNY_MSG (msg));
1078
1079         parts = TNY_LIST (tny_simple_list_new());
1080         tny_mime_part_get_parts (TNY_MIME_PART (part_to_check), parts);
1081         tny_list_foreach (parts, add_if_attachment, &attachments_list);
1082
1083         new_msg = create_reply_forward_mail (msg, header, from, signature, TRUE, reply_type,
1084                                              attachments_list);
1085
1086         set_references (new_msg, msg);
1087         if (attachments_list != NULL) {
1088                 g_list_foreach (attachments_list, (GFunc) g_object_unref, NULL);
1089                 g_list_free (attachments_list);
1090         }
1091         g_object_unref (parts);
1092
1093         /* Fill the header */
1094         if (header)
1095                 g_object_ref (header);
1096         else
1097                 header = tny_msg_get_header (msg);
1098
1099
1100         new_header = tny_msg_get_header(new_msg);
1101         new_to = get_new_to (msg, header, from, reply_mode);
1102         if (!new_to)
1103                 g_warning ("%s: failed to get new To:", __FUNCTION__);
1104         else {
1105                 tny_header_set_to (new_header, new_to);
1106                 g_free (new_to);
1107         }
1108
1109         if (reply_mode == MODEST_TNY_MSG_REPLY_MODE_ALL) {
1110                 gchar *new_cc = get_new_cc (header, from);
1111                 if (new_cc) {
1112                         tny_header_set_cc (new_header, new_cc);
1113                         g_free (new_cc);
1114                 }
1115         }
1116
1117         /* Clean */
1118         g_object_unref (G_OBJECT (new_header));
1119         g_object_unref (G_OBJECT (header));
1120         g_object_unref (G_OBJECT (part_to_check));
1121
1122         return new_msg;
1123 }
1124
1125
1126 static gboolean
1127 is_ascii(const gchar *s)
1128 {
1129         if (!s)
1130                 return TRUE;
1131         while (s[0]) {
1132                 if (s[0] & 128 || s[0] < 32)
1133                         return FALSE;
1134                 s++;
1135         }
1136         return TRUE;
1137 }
1138
1139 static char *
1140 get_content_type(const gchar *s)
1141 {
1142         GString *type;
1143
1144         type = g_string_new("text/plain");
1145         if (!is_ascii(s)) {
1146                 if (g_utf8_validate(s, -1, NULL)) {
1147                         g_string_append(type, "; charset=\"utf-8\"");
1148                 } else {
1149                         /* it should be impossible to reach this, but better safe than sorry */
1150                         g_warning("invalid utf8 in message");
1151                         g_string_append(type, "; charset=\"latin1\"");
1152                 }
1153         }
1154         return g_string_free(type, FALSE);
1155 }
1156
1157 guint64
1158 modest_tny_msg_estimate_size (const gchar *plain_body, const gchar *html_body,
1159                               guint64 parts_count,
1160                               guint64 parts_size)
1161 {
1162         guint64 result;
1163
1164         /* estimation of headers size */
1165         result = 1024;
1166
1167         /* We add a 20% of size due to the increase in 7bit encoding */
1168         if (plain_body) {
1169                 result += strlen (plain_body) * 120 / 100;
1170         }
1171         if (html_body) {
1172                 result += strlen (html_body) * 120 / 100;
1173         }
1174
1175         /* 256 bytes per additional part because of their headers */
1176         result += parts_count * 256;
1177
1178         /* 150% of increase per encoding */
1179         result += parts_size * 3 / 2;
1180
1181         return result;
1182 }
1183
1184 GSList *
1185 modest_tny_msg_header_get_all_recipients_list (TnyHeader *header)
1186 {
1187         GSList *recipients = NULL;
1188         gchar *from = NULL, *to = NULL, *cc = NULL, *bcc = NULL;
1189
1190         if (header == NULL)
1191                 return NULL;
1192
1193         from = tny_header_dup_from (header);
1194         to = tny_header_dup_to (header);
1195         cc = tny_header_dup_cc (header);
1196         bcc = tny_header_dup_bcc (header);
1197
1198         recipients = NULL;
1199         if (from)
1200                 recipients = g_slist_concat (recipients, modest_text_utils_split_addresses_list (from));
1201         if (to)
1202                 recipients = g_slist_concat (recipients, modest_text_utils_split_addresses_list (to));
1203         if (cc)
1204                 recipients = g_slist_concat (recipients, modest_text_utils_split_addresses_list (cc));
1205         if (bcc)
1206                 recipients = g_slist_concat (recipients, modest_text_utils_split_addresses_list (bcc));
1207
1208         g_free (from);
1209         g_free (to);
1210         g_free (cc);
1211         g_free (bcc);
1212
1213         return recipients;
1214 }
1215
1216 GSList *
1217 modest_tny_msg_get_all_recipients_list (TnyMsg *msg)
1218 {
1219         TnyHeader *header = NULL;
1220         GSList *recipients = NULL;
1221
1222         if (msg == NULL)
1223                 return NULL;
1224
1225         header = tny_msg_get_header (msg);
1226         if (header == NULL)
1227                 return NULL;
1228
1229         recipients = modest_tny_msg_header_get_all_recipients_list (header);
1230         g_object_unref (header);
1231
1232         return recipients;
1233 }
1234