git.maemo.org Git - modest/blob - src/modest-tny-msg.c

   1 /* Copyright (c) 2006, Nokia Corporation
   2  * All rights reserved.
   3  *
   4  * Redistribution and use in source and binary forms, with or without
   5  * modification, are permitted provided that the following conditions are
   6  * met:
   7  *
   8  * * Redistributions of source code must retain the above copyright
   9  *   notice, this list of conditions and the following disclaimer.
  10  * * Redistributions in binary form must reproduce the above copyright
  11  *   notice, this list of conditions and the following disclaimer in the
  12  *   documentation and/or other materials provided with the distribution.
  13  * * Neither the name of the Nokia Corporation nor the names of its
  14  *   contributors may be used to endorse or promote products derived from
  15  *   this software without specific prior written permission.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
  18  * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  19  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
  20  * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
  21  * OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
  22  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  23  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
  24  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
  25  * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
  26  * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
  27  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  28  */
  29
  30 #include <string.h>
  31 #include <gtkhtml/gtkhtml.h>
  32 #include <tny-gtk-text-buffer-stream.h>
  33 #include <tny-simple-list.h>
  34 #include <tny-folder.h>
  35 #include <modest-runtime.h>
  36 #include "modest-formatter.h"
  37 #include <tny-camel-mem-stream.h>
  38 #include <tny-camel-mime-part.h>
  39 #include <glib/gprintf.h>
  40 #include <modest-tny-folder.h>
  41 #include "modest-tny-mime-part.h"
  42 #include <modest-error.h>
  43
  44
  45 #ifdef HAVE_CONFIG_H
  46 #include <config.h>
  47 #endif /*HAVE_CONFIG_H */
  48
  49 #include <modest-tny-msg.h>
  50 #include "modest-text-utils.h"
  51
  52 static TnyMimePart * add_body_part (TnyMsg *msg, const gchar *body,
  53                                     const gchar *content_type);
  54 static TnyMimePart * add_html_body_part (TnyMsg *msg, const gchar *body);
  55 static gint add_attachments (TnyMimePart *part, GList *attachments_list, gboolean add_inline, GError **err);
  56 static void add_images (TnyMsg *msg, GList *attachments_list, GError **err);
  57 static char * get_content_type(const gchar *s);
  58 static gboolean is_ascii(const gchar *s);
  59
  60
  61 TnyMsg*
  62 modest_tny_msg_new (const gchar* mailto, const gchar* from, const gchar *cc,
  63                     const gchar *bcc, const gchar* subject, const gchar *body,
  64                     GList *attachments, gint *attached, GError **err)
  65 {
  66         TnyMsg *new_msg;
  67         TnyHeader *header;
  68         gchar *content_type;
  69         gint tmp_attached = 0;
  70
  71         /* Create new msg */
  72         new_msg = modest_formatter_create_message (NULL, TRUE, (attachments != NULL), FALSE);
  73         header  = tny_msg_get_header (new_msg);
  74
  75         if ((from != NULL) && (strlen(from) > 0)) {
  76                 tny_header_set_from (TNY_HEADER (header), from);
  77                 tny_header_set_replyto (TNY_HEADER (header), from);
  78         }
  79         if ((mailto != NULL) && (strlen(mailto) > 0))
  80                 tny_header_set_to (TNY_HEADER (header), mailto);
  81         if ((cc != NULL) && (strlen(cc) > 0))
  82                 tny_header_set_cc (TNY_HEADER (header), cc);
  83         if ((bcc != NULL) && (strlen(bcc) > 0))
  84                 tny_header_set_bcc (TNY_HEADER (header), bcc);
  85
  86         if ((subject != NULL) && (strlen(subject) > 0))
  87                 tny_header_set_subject (TNY_HEADER (header), subject);
  88
  89         content_type = get_content_type(body);
  90
  91         /* set modest as the X-Mailer
  92          * we could this in the platform factory, but then the header
  93          * would show up before all the others.
  94          */
  95         tny_mime_part_set_header_pair (TNY_MIME_PART (new_msg), "X-Mailer", "Modest "
  96                                        VERSION);
  97
  98         /* Add the body of the new mail */
  99         /* This is needed even if body is NULL or empty. */
 100         add_body_part (new_msg, body, content_type);
 101         g_free (content_type);
 102
 103         /* Add attachments */
 104         if (attachments)
 105                 tmp_attached = add_attachments (TNY_MIME_PART (new_msg), attachments, FALSE, err);
 106         if (attached)
 107                 *attached = tmp_attached;
 108         if (header)
 109                 g_object_unref(header);
 110
 111         return new_msg;
 112 }
 113
 114 TnyMsg*
 115 modest_tny_msg_new_html_plain (const gchar* mailto, const gchar* from, const gchar *cc,
 116                                const gchar *bcc, const gchar* subject,
 117                                const gchar *html_body, const gchar *plain_body,
 118                                GList *attachments, GList *images, gint *attached, GError **err)
 119 {
 120         TnyMsg *new_msg;
 121         TnyHeader *header;
 122         gchar *content_type;
 123         gint tmp_attached;
 124
 125         /* Create new msg */
 126         new_msg = modest_formatter_create_message (NULL, FALSE, (attachments != NULL), (images != NULL));
 127         header  = tny_msg_get_header (new_msg);
 128
 129         if ((from != NULL) && (strlen(from) > 0)) {
 130                 tny_header_set_from (TNY_HEADER (header), from);
 131                 tny_header_set_replyto (TNY_HEADER (header), from);
 132         }
 133         if ((mailto != NULL) && (strlen(mailto) > 0))
 134                 tny_header_set_to (TNY_HEADER (header), mailto);
 135         if ((cc != NULL) && (strlen(cc) > 0))
 136                 tny_header_set_cc (TNY_HEADER (header), cc);
 137         if ((bcc != NULL) && (strlen(bcc) > 0))
 138                 tny_header_set_bcc (TNY_HEADER (header), bcc);
 139
 140         if ((subject != NULL) && (strlen(subject) > 0))
 141                 tny_header_set_subject (TNY_HEADER (header), subject);
 142
 143         content_type = get_content_type(plain_body);
 144
 145         /* set modest as the X-Mailer
 146          * we could this in the platform factory, but then the header
 147          * would show up before all the others.
 148          */
 149         tny_mime_part_set_header_pair (TNY_MIME_PART (new_msg), "X-Mailer", "Modest "
 150                                        VERSION);
 151
 152         /* Add the body of the new mail */
 153         add_body_part (new_msg, plain_body, content_type);
 154         add_html_body_part (new_msg, html_body);
 155         g_free (content_type);
 156
 157         /* Add attachments */
 158         tmp_attached = add_attachments (TNY_MIME_PART (new_msg), attachments, FALSE, err);
 159         if (attached)
 160                 *attached = tmp_attached;
 161         add_images (new_msg, images, err);
 162         if (header)
 163                 g_object_unref(header);
 164
 165         return new_msg;
 166 }
 167
 168
 169 /* FIXME: this func copy from modest-mail-operation: refactor */
 170 static TnyMimePart *
 171 add_body_part (TnyMsg *msg,
 172                const gchar *body,
 173                const gchar *content_type)
 174 {
 175         TnyMimePart *text_body_part = NULL;
 176         TnyStream *text_body_stream;
 177
 178         /* Create the stream */
 179         text_body_stream = TNY_STREAM (tny_camel_mem_stream_new_with_buffer
 180                                         (body, (body ? strlen(body) : 0)));
 181
 182         text_body_part = modest_formatter_create_body_part (NULL, msg);
 183
 184         /* Construct MIME part */
 185         tny_stream_reset (text_body_stream);
 186         tny_mime_part_construct (text_body_part,
 187                                  text_body_stream,
 188                                  content_type, "7bit");
 189         tny_stream_reset (text_body_stream);
 190
 191         g_object_unref (G_OBJECT(text_body_part));
 192
 193         /* Clean */
 194         g_object_unref (text_body_stream);
 195
 196         return text_body_part;
 197 }
 198
 199 static TnyMimePart *
 200 add_html_body_part (TnyMsg *msg,
 201                     const gchar *body)
 202 {
 203         TnyMimePart *html_body_part = NULL;
 204         TnyStream *html_body_stream;
 205
 206         /* Create the stream */
 207         html_body_stream = TNY_STREAM (tny_camel_mem_stream_new_with_buffer
 208                                         (body, strlen(body)));
 209
 210         /* Create body part if needed */
 211         html_body_part = modest_formatter_create_body_part (NULL, msg);
 212
 213         /* Construct MIME part */
 214         tny_stream_reset (html_body_stream);
 215         tny_mime_part_construct (html_body_part,
 216                                  html_body_stream,
 217                                  "text/html; charset=utf-8",
 218                                  "7bit"); /* Sometimes it might be needed
 219                                              to make this one a 8bit! */
 220         tny_stream_reset (html_body_stream);
 221
 222         g_object_unref (G_OBJECT(html_body_part));
 223
 224         /* Clean */
 225         g_object_unref (html_body_stream);
 226
 227         return html_body_part;
 228 }
 229
 230 static TnyMimePart *
 231 copy_mime_part (TnyMimePart *part, GError **err)
 232 {
 233         TnyMimePart *result = NULL;
 234         const gchar *attachment_content_type;
 235         const gchar *attachment_filename;
 236         const gchar *attachment_cid;
 237         TnyList *parts;
 238         TnyIterator *iterator;
 239         TnyStream *attachment_stream;
 240         const gchar *enc;
 241         gint ret;
 242
 243         if (TNY_IS_MSG (part)) {
 244                 g_object_ref (part);
 245                 return part;
 246         }
 247
 248         result = tny_platform_factory_new_mime_part (
 249                 modest_runtime_get_platform_factory());
 250
 251         attachment_content_type = tny_mime_part_get_content_type (part);
 252
 253         /* get mime part headers */
 254         attachment_filename = tny_mime_part_get_filename (part);
 255         attachment_cid = tny_mime_part_get_content_id (part);
 256
 257         /* fill the stream */
 258         attachment_stream = tny_mime_part_get_decoded_stream (part);
 259         enc = tny_mime_part_get_transfer_encoding (part);
 260         if (attachment_stream == NULL) {
 261                 if (err != NULL && *err == NULL)
 262                         g_set_error (err, MODEST_MAIL_OPERATION_ERROR, MODEST_MAIL_OPERATION_ERROR_FILE_IO, _("TODO: couldn't retrieve attachment"));
 263                 g_object_unref (result);
 264                 return NULL;
 265         } else {
 266                 ret = tny_stream_reset (attachment_stream);
 267                 ret = tny_mime_part_construct (result,
 268                                                attachment_stream,
 269                                                attachment_content_type,
 270                                                enc);
 271                 ret = tny_stream_reset (attachment_stream);
 272         }
 273
 274         /* set other mime part fields */
 275         tny_mime_part_set_filename (result, attachment_filename);
 276         tny_mime_part_set_content_id (result, attachment_cid);
 277
 278         /* copy subparts */
 279         parts = tny_simple_list_new ();
 280         tny_mime_part_get_parts (part, parts);
 281         iterator = tny_list_create_iterator (parts);
 282         while (!tny_iterator_is_done (iterator)) {
 283                 TnyMimePart *subpart = TNY_MIME_PART (tny_iterator_get_current (iterator));
 284                 if (subpart) {
 285                         const gchar *subpart_cid;
 286                         TnyMimePart *subpart_copy = copy_mime_part (subpart, err);
 287                         if (subpart_copy != NULL) {
 288                                 subpart_cid = tny_mime_part_get_content_id (subpart);
 289                                 tny_mime_part_add_part (result, subpart_copy);
 290                                 if (subpart_cid)
 291                                         tny_mime_part_set_content_id (result, subpart_cid);
 292                                 g_object_unref (subpart_copy);
 293                         }
 294                         g_object_unref (subpart);
 295                 }
 296
 297                 tny_iterator_next (iterator);
 298         }
 299         g_object_unref (iterator);
 300         g_object_unref (parts);
 301         g_object_unref (attachment_stream);
 302
 303         return result;
 304 }
 305
 306 static gint
 307 add_attachments (TnyMimePart *part, GList *attachments_list, gboolean add_inline, GError **err)
 308 {
 309         GList *pos;
 310         TnyMimePart *attachment_part, *old_attachment;
 311         gint ret;
 312         gint attached = 0;
 313
 314         for (pos = (GList *)attachments_list; pos; pos = pos->next) {
 315
 316                 old_attachment = pos->data;
 317                 if (!tny_mime_part_is_purged (old_attachment)) {
 318                         const gchar *old_cid;
 319                         old_cid = tny_mime_part_get_content_id (old_attachment);
 320                         attachment_part = copy_mime_part (old_attachment, err);
 321                         if (attachment_part != NULL) {
 322                                 if (add_inline) {
 323                                         tny_mime_part_set_header_pair (attachment_part, "Content-Disposition",
 324                                                                        "inline");
 325                                 } else {
 326                                         const gchar *filename;
 327                                         filename = tny_mime_part_get_filename (old_attachment);
 328                                         if (filename)
 329                                                 tny_mime_part_set_filename (attachment_part, filename);
 330                                         else
 331                                                 tny_mime_part_set_header_pair (attachment_part, "Content-Disposition",
 332                                                                                "attachment");
 333                                 }
 334                                 tny_mime_part_set_transfer_encoding (TNY_MIME_PART (attachment_part), "base64");
 335                                 ret = tny_mime_part_add_part (TNY_MIME_PART (part), attachment_part);
 336                                 attached++;
 337                                 if (old_cid)
 338                                         tny_mime_part_set_content_id (attachment_part, old_cid);
 339                                 g_object_unref (attachment_part);
 340                         }
 341                 }
 342         }
 343         return attached;
 344 }
 345
 346 static void
 347 add_images (TnyMsg *msg, GList *images_list, GError **err)
 348 {
 349         TnyMimePart *related_part = NULL;
 350         const gchar *content_type;
 351
 352         content_type = tny_mime_part_get_content_type (TNY_MIME_PART (msg));
 353
 354         if ((content_type != NULL) && !strcasecmp (content_type, "multipart/related")) {
 355                 related_part = g_object_ref (msg);
 356         } else if ((content_type != NULL) && !strcasecmp (content_type, "multipart/mixed")) {
 357                 TnyList *parts = TNY_LIST (tny_simple_list_new ());
 358                 TnyIterator *iter = NULL;
 359                 tny_mime_part_get_parts (TNY_MIME_PART (msg), parts);
 360                 iter = tny_list_create_iterator (parts);
 361
 362                 while (!tny_iterator_is_done (iter)) {
 363                         TnyMimePart *part = TNY_MIME_PART (tny_iterator_get_current (iter));
 364                         if (part && !g_strcasecmp (tny_mime_part_get_content_type (part), "multipart/related")) {
 365                                 related_part = part;
 366                                 break;
 367                         } else {
 368                                 g_object_unref (part);
 369                         }
 370                         tny_iterator_next (iter);
 371                 }
 372                 g_object_unref (iter);
 373                 g_object_unref (parts);
 374         }
 375
 376         if (related_part != NULL) {
 377                 /* TODO: attach images in their proper place */
 378                 add_attachments (related_part, images_list, TRUE, err);
 379                 g_object_unref (related_part);
 380         }
 381 }
 382
 383
 384 gchar *
 385 modest_tny_msg_get_body (TnyMsg *msg, gboolean want_html, gboolean *is_html)
 386 {
 387         TnyStream *stream;
 388         TnyMimePart *body;
 389         GtkTextBuffer *buf;
 390         GtkTextIter start, end;
 391         gchar *to_quote;
 392         gboolean result_was_html = TRUE;
 393
 394         g_return_val_if_fail (msg && TNY_IS_MSG(msg), NULL);
 395
 396         body = modest_tny_msg_find_body_part(msg, want_html);
 397         if (!body)
 398                 return NULL;
 399
 400         buf = gtk_text_buffer_new (NULL);
 401         stream = TNY_STREAM (tny_gtk_text_buffer_stream_new (buf));
 402         tny_stream_reset (stream);
 403         tny_mime_part_decode_to_stream (body, stream, NULL);
 404         tny_stream_reset (stream);
 405
 406         gtk_text_buffer_get_bounds (buf, &start, &end);
 407         to_quote = gtk_text_buffer_get_text (buf, &start, &end, FALSE);
 408         if (tny_mime_part_content_type_is (body, "text/plain")) {
 409                 gchar *to_quote_converted = modest_text_utils_convert_to_html (to_quote);
 410                 g_free (to_quote);
 411                 to_quote = to_quote_converted;
 412                 result_was_html = FALSE;
 413         }
 414
 415         g_object_unref (buf);
 416         g_object_unref (G_OBJECT(stream));
 417         g_object_unref (G_OBJECT(body));
 418
 419         if (is_html != NULL)
 420                 *is_html = result_was_html;
 421
 422         return to_quote;
 423 }
 424
 425
 426 TnyMimePart*
 427 modest_tny_msg_find_body_part_from_mime_part (TnyMimePart *msg, gboolean want_html)
 428 {
 429         const gchar *desired_mime_type = want_html ? "text/html" : "text/plain";
 430         TnyMimePart *part = NULL;
 431         TnyList *parts = NULL;
 432         TnyIterator *iter = NULL;
 433         gchar *header_content_type;
 434         gchar *header_content_type_lower = NULL;
 435
 436         if (!msg)
 437                 return NULL;
 438
 439         /* If it's an application multipart, then we don't get into as we don't
 440          * support them (for example application/sml or wap messages */
 441         header_content_type = modest_tny_mime_part_get_header_value (msg, "Content-Type");
 442         if (header_content_type) {
 443                 header_content_type = g_strstrip (header_content_type);
 444                 header_content_type_lower = g_ascii_strdown (header_content_type, -1);
 445         }
 446         if (header_content_type_lower &&
 447             g_str_has_prefix (header_content_type_lower, "multipart/") &&
 448             !g_str_has_prefix (header_content_type_lower, "multipart/signed") &&
 449             strstr (header_content_type_lower, "application/")) {
 450                 g_free (header_content_type_lower);
 451                 g_free (header_content_type);
 452                 return NULL;
 453         }
 454         g_free (header_content_type_lower);
 455         g_free (header_content_type);
 456
 457         parts = TNY_LIST (tny_simple_list_new());
 458         tny_mime_part_get_parts (TNY_MIME_PART (msg), parts);
 459
 460         iter  = tny_list_create_iterator(parts);
 461
 462         /* no parts? assume it's single-part message */
 463         if (tny_iterator_is_done(iter)) {
 464                 gchar *content_type;
 465                 gchar *content_type_lower;
 466                 gboolean is_text_part;
 467                 g_object_unref (G_OBJECT(iter));
 468                 content_type = g_strdup (tny_mime_part_get_content_type (msg));
 469                 if (content_type == NULL)
 470                         return NULL;
 471                 content_type = g_strstrip (content_type);
 472                 content_type_lower = g_ascii_strdown (content_type, -1);
 473                 g_free (content_type);
 474                 is_text_part =
 475                         g_str_has_prefix (content_type_lower, "text/") ||
 476                         g_str_has_prefix (content_type_lower, "message/rfc822");
 477                 g_free (content_type_lower);
 478                 /* if this part cannot be a supported body return NULL */
 479                 if (!is_text_part) {
 480                         return NULL;
 481                 } else {
 482                         return TNY_MIME_PART (g_object_ref(G_OBJECT(msg)));
 483                 }
 484         } else {
 485                 do {
 486                         gchar *tmp, *content_type = NULL;
 487                         gboolean has_content_disp_name = FALSE;
 488
 489                         part = TNY_MIME_PART(tny_iterator_get_current (iter));
 490
 491                         if (!part) {
 492                                 g_warning ("%s: not a valid mime part", __FUNCTION__);
 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         const 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 = tny_header_get_replyto (header);
 772         old_reply_to = modest_tny_mime_part_get_header_value (TNY_MIME_PART(msg),
 773                                                               "Reply-To");
 774         old_from     = tny_header_dup_from (header);
 775
 776         if (!old_from &&  !old_reply_to) {
 777                 g_warning ("%s: failed to get either Reply-To: or From: from header",
 778                            __FUNCTION__);
 779                 return NULL;
 780         }
 781
 782         /* for mailing lists, use both Reply-To and From if we did a
 783          * 'Reply All:'
 784          * */
 785         if (is_mailing_list && reply_mode == MODEST_TNY_MSG_REPLY_MODE_ALL &&
 786             old_reply_to && old_from && strcmp (old_from, old_reply_to) != 0)
 787                 new_to = g_strjoin (",", old_reply_to, old_from, NULL);
 788         else
 789                 /* otherwise use either Reply-To: (preferred) or From: */
 790                 new_to = g_strdup (old_reply_to ? old_reply_to : old_from);
 791         g_free (old_from);
 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;
 831         gchar *result;
 832
 833         old_cc = tny_header_dup_cc (header);
 834         if (!old_cc)
 835                 return NULL;
 836
 837         /* remove me (the new From:) from the Cc: list */
 838         result =  modest_text_utils_remove_address (old_cc, from);
 839         g_free (old_cc);
 840         return result;
 841 }
 842
 843
 844 TnyMsg*
 845 modest_tny_msg_create_reply_msg (TnyMsg *msg,
 846                                  TnyHeader *header,
 847                                  const gchar *from,
 848                                  const gchar *signature,
 849                                  ModestTnyMsgReplyType reply_type,
 850                                  ModestTnyMsgReplyMode reply_mode)
 851 {
 852         TnyMsg *new_msg = NULL;
 853         TnyHeader *new_header;
 854         gchar *new_to = NULL;
 855         TnyList *parts = NULL;
 856         GList *attachments_list = NULL;
 857
 858         g_return_val_if_fail (msg && TNY_IS_MSG(msg), NULL);
 859
 860         parts = TNY_LIST (tny_simple_list_new());
 861         tny_mime_part_get_parts (TNY_MIME_PART (msg), parts);
 862         tny_list_foreach (parts, add_if_attachment, &attachments_list);
 863
 864         new_msg = create_reply_forward_mail (msg, header, from, signature, TRUE, reply_type,
 865                                              attachments_list);
 866         if (attachments_list != NULL) {
 867                 g_list_foreach (attachments_list, (GFunc) g_object_unref, NULL);
 868                 g_list_free (attachments_list);
 869         }
 870         if (parts)
 871                 g_object_unref (G_OBJECT (parts));
 872
 873         /* Fill the header */
 874         if (header)
 875                 g_object_ref (header);
 876         else
 877                 header = tny_msg_get_header (msg);
 878
 879
 880         new_header = tny_msg_get_header(new_msg);
 881         new_to = get_new_to (msg, header, from, reply_mode);
 882         if (!new_to)
 883                 g_warning ("%s: failed to get new To:", __FUNCTION__);
 884         else {
 885                 tny_header_set_to (new_header, new_to);
 886                 g_free (new_to);
 887         }
 888
 889         if (reply_mode == MODEST_TNY_MSG_REPLY_MODE_ALL) {
 890                 gchar *new_cc = get_new_cc (header, from);
 891                 if (new_cc) {
 892                         tny_header_set_cc (new_header, new_cc);
 893                         g_free (new_cc);
 894                 }
 895         }
 896
 897         /* Clean */
 898         g_object_unref (G_OBJECT (new_header));
 899         g_object_unref (G_OBJECT (header));
 900
 901         return new_msg;
 902 }
 903
 904
 905 static gboolean
 906 is_ascii(const gchar *s)
 907 {
 908         if (!s)
 909                 return TRUE;
 910         while (s[0]) {
 911                 if (s[0] & 128 || s[0] < 32)
 912                         return FALSE;
 913                 s++;
 914         }
 915         return TRUE;
 916 }
 917
 918 static char *
 919 get_content_type(const gchar *s)
 920 {
 921         GString *type;
 922
 923         type = g_string_new("text/plain");
 924         if (!is_ascii(s)) {
 925                 if (g_utf8_validate(s, -1, NULL)) {
 926                         g_string_append(type, "; charset=\"utf-8\"");
 927                 } else {
 928                         /* it should be impossible to reach this, but better safe than sorry */
 929                         g_warning("invalid utf8 in message");
 930                         g_string_append(type, "; charset=\"latin1\"");
 931                 }
 932         }
 933         return g_string_free(type, FALSE);
 934 }
 935
 936 guint64
 937 modest_tny_msg_estimate_size (const gchar *plain_body, const gchar *html_body,
 938                               guint64 parts_count,
 939                               guint64 parts_size)
 940 {
 941         guint64 result;
 942
 943         /* estimation of headers size */
 944         result = 1024;
 945
 946         /* We add a 20% of size due to the increase in 7bit encoding */
 947         if (plain_body) {
 948                 result += strlen (plain_body) * 120 / 100;
 949         }
 950         if (html_body) {
 951                 result += strlen (html_body) * 120 / 100;
 952         }
 953
 954         /* 256 bytes per additional part because of their headers */
 955         result += parts_count * 256;
 956
 957         /* 150% of increase per encoding */
 958         result += parts_size * 3 / 2;
 959
 960         return result;
 961 }