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 = g_str_has_prefix (content_type_lower, "text/");
 475                 g_free (content_type_lower);
 476                 /* if this part cannot be a supported body return NULL */
 477                 if (!is_text_part) {
 478                         return NULL;
 479                 } else {
 480                         return TNY_MIME_PART (g_object_ref(G_OBJECT(msg)));
 481                 }
 482         } else {
 483                 do {
 484                         gchar *tmp, *content_type = NULL;
 485                         gboolean has_content_disp_name = FALSE;
 486
 487                         part = TNY_MIME_PART(tny_iterator_get_current (iter));
 488
 489                         if (!part) {
 490                                 g_warning ("%s: not a valid mime part", __FUNCTION__);
 491                                 continue;
 492                         }
 493
 494                         /* it's a message --> ignore */
 495                         if (part && TNY_IS_MSG (part)) {
 496                                 g_object_unref (part);
 497                                 tny_iterator_next (iter);
 498                                 continue;
 499                         }
 500
 501                         /* we need to strdown the content type, because
 502                          * tny_mime_part_has_content_type does not do it...
 503                          */
 504                         content_type = g_ascii_strdown (tny_mime_part_get_content_type (part), -1);
 505
 506                         /* mime-parts with a content-disposition header (either 'inline' or 'attachment')
 507                          * and a 'name=' thingy cannot be body parts
 508                          */
 509
 510                         tmp = modest_tny_mime_part_get_header_value (part, "Content-Disposition");
 511                         if (tmp) {
 512                                 gchar *content_disp = g_ascii_strdown(tmp, -1);
 513                                 g_free (tmp);
 514                                 has_content_disp_name = g_strstr_len (content_disp, strlen(content_disp), "name=") != NULL;
 515                                 g_free (content_disp);
 516                         }
 517
 518                         if (g_str_has_prefix (content_type, desired_mime_type) &&
 519                             !has_content_disp_name &&
 520                             !modest_tny_mime_part_is_attachment_for_modest (part)) {
 521                                 /* we found the desired mime-type! */
 522                                 g_free (content_type);
 523                                 break;
 524
 525                         } else  if (g_str_has_prefix(content_type, "multipart")) {
 526
 527                                 /* multipart? recurse! */
 528                                 g_object_unref (part);
 529                                 g_free (content_type);
 530                                 part = modest_tny_msg_find_body_part_from_mime_part (part, want_html);
 531                                 if (part)
 532                                         break;
 533                         } else
 534                                 g_free (content_type);
 535
 536                         if (part) {
 537                                 g_object_unref (G_OBJECT(part));
 538                                 part = NULL;
 539                         }
 540
 541                         tny_iterator_next (iter);
 542
 543                 } while (!tny_iterator_is_done(iter));
 544         }
 545
 546         g_object_unref (G_OBJECT(iter));
 547         g_object_unref (G_OBJECT(parts));
 548
 549         /* if were trying to find an HTML part and couldn't find it,
 550          * try to find a text/plain part instead
 551          */
 552         if (!part && want_html)
 553                 return modest_tny_msg_find_body_part_from_mime_part (msg, FALSE);
 554         else
 555                 return part; /* this maybe NULL, this is not an error; some message just don't have a body
 556                               * part */
 557 }
 558
 559
 560 TnyMimePart*
 561 modest_tny_msg_find_body_part (TnyMsg *msg, gboolean want_html)
 562 {
 563         g_return_val_if_fail (msg && TNY_IS_MSG(msg), NULL);
 564
 565         return modest_tny_msg_find_body_part_from_mime_part (TNY_MIME_PART(msg),
 566                                                              want_html);
 567 }
 568
 569
 570 #define MODEST_TNY_MSG_PARENT_UID "parent-uid"
 571
 572 static TnyMsg *
 573 create_reply_forward_mail (TnyMsg *msg, TnyHeader *header, const gchar *from,
 574                            const gchar *signature, gboolean is_reply,
 575                            guint type /*ignored*/, GList *attachments)
 576 {
 577         TnyMsg *new_msg;
 578         TnyHeader *new_header;
 579         gchar *old_subject;
 580         gchar *new_subject;
 581         TnyMimePart *body = NULL;
 582         ModestFormatter *formatter;
 583         gchar *subject_prefix;
 584         gboolean no_text_part;
 585
 586         if (header)
 587                 g_object_ref (header);
 588         else
 589                 header = tny_msg_get_header (msg);
 590
 591         /* Get body from original msg. Always look for the text/plain
 592            part of the message to create the reply/forwarded mail */
 593         if (msg != NULL)
 594                 body   = modest_tny_msg_find_body_part (msg, FALSE);
 595
 596         if (modest_conf_get_bool (modest_runtime_get_conf (), MODEST_CONF_PREFER_FORMATTED_TEXT,
 597                                   NULL))
 598                 formatter = modest_formatter_new ("text/html", signature);
 599         else
 600                 formatter = modest_formatter_new ("text/plain", signature);
 601
 602
 603         /* if we don't have a text-part */
 604         no_text_part = (!body) || (strcmp (tny_mime_part_get_content_type (body), "text/html")==0);
 605
 606         /* when we're reply, include the text part if we have it, or nothing otherwise. */
 607         if (is_reply)
 608                 new_msg = modest_formatter_quote  (formatter, no_text_part ? NULL: body, header,
 609                                                     attachments);
 610         else {
 611                 /* for attachements; inline if there is a text part, and include the
 612                  * full old mail if there was none */
 613                 if (no_text_part) {
 614                         new_msg = modest_formatter_attach (formatter, msg, header);
 615                 } else {
 616                         new_msg = modest_formatter_inline  (formatter, body, header,
 617                                                             attachments);
 618                 }
 619         }
 620
 621         g_object_unref (G_OBJECT(formatter));
 622         if (body)
 623                 g_object_unref (G_OBJECT(body));
 624
 625         /* Fill the header */
 626         new_header = tny_msg_get_header (new_msg);
 627         tny_header_set_from (new_header, from);
 628         tny_header_set_replyto (new_header, from);
 629
 630         /* Change the subject */
 631         if (is_reply)
 632                 subject_prefix = g_strconcat (_("mail_va_re"), ":", NULL);
 633         else
 634                 subject_prefix = g_strconcat (_("mail_va_fw"), ":", NULL);
 635         old_subject = tny_header_dup_subject (header);
 636         new_subject =
 637                 (gchar *) modest_text_utils_derived_subject (old_subject,
 638                                                              subject_prefix);
 639         g_free (old_subject);
 640         g_free (subject_prefix);
 641         tny_header_set_subject (new_header, (const gchar *) new_subject);
 642         g_free (new_subject);
 643
 644         /* get the parent uid, and set it as a gobject property on the new msg */
 645         if (new_msg) {
 646                 gchar* parent_uid = modest_tny_folder_get_header_unique_id (header);
 647                 g_object_set_data_full (G_OBJECT(new_msg), MODEST_TNY_MSG_PARENT_UID,
 648                                         parent_uid, g_free);
 649         }
 650
 651         /* set modest as the X-Mailer
 652          * we could this in the platform factory, but then the header
 653          * would show up before all the others.
 654          */
 655         tny_mime_part_set_header_pair (TNY_MIME_PART (msg), "X-Mailer", "Modest "
 656                                        VERSION);
 657
 658         /* Clean */
 659         g_object_unref (G_OBJECT (new_header));
 660         g_object_unref (G_OBJECT (header));
 661         /* ugly to unref it here instead of in the calling func */
 662
 663         if (!is_reply & !no_text_part) {
 664                 add_attachments (TNY_MIME_PART (new_msg), attachments, FALSE, NULL);
 665         }
 666
 667         return new_msg;
 668 }
 669
 670 const gchar*
 671 modest_tny_msg_get_parent_uid (TnyMsg *msg)
 672 {
 673         g_return_val_if_fail (msg && TNY_IS_MSG(msg), NULL);
 674
 675         return g_object_get_data (G_OBJECT(msg), MODEST_TNY_MSG_PARENT_UID);
 676 }
 677
 678
 679
 680 static void
 681 add_if_attachment (gpointer data, gpointer user_data)
 682 {
 683         TnyMimePart *part;
 684         GList **attachments_list;
 685
 686         part = TNY_MIME_PART (data);
 687         attachments_list = ((GList **) user_data);
 688
 689         if ((tny_mime_part_is_attachment (part))||(TNY_IS_MSG (part))) {
 690                 *attachments_list = g_list_prepend (*attachments_list, part);
 691                 g_object_ref (part);
 692         }
 693 }
 694
 695 TnyMsg*
 696 modest_tny_msg_create_forward_msg (TnyMsg *msg,
 697                                    const gchar *from,
 698                                    const gchar *signature,
 699                                    ModestTnyMsgForwardType forward_type)
 700 {
 701         TnyMsg *new_msg;
 702         TnyList *parts = NULL;
 703         GList *attachments_list = NULL;
 704
 705         g_return_val_if_fail (msg && TNY_IS_MSG(msg), NULL);
 706
 707         /* Add attachments */
 708         parts = TNY_LIST (tny_simple_list_new());
 709         tny_mime_part_get_parts (TNY_MIME_PART (msg), parts);
 710         tny_list_foreach (parts, add_if_attachment, &attachments_list);
 711
 712         new_msg = create_reply_forward_mail (msg, NULL, from, signature, FALSE, forward_type,
 713                                              attachments_list);
 714
 715         /* Clean */
 716         if (attachments_list) {
 717                 g_list_foreach (attachments_list, (GFunc) g_object_unref, NULL);
 718                 g_list_free (attachments_list);
 719         }
 720         g_object_unref (G_OBJECT (parts));
 721
 722         return new_msg;
 723 }
 724
 725
 726
 727 static gint
 728 count_addresses (const gchar* addresses)
 729 {
 730         gint count = 1;
 731
 732         if (!addresses)
 733                 return 0;
 734
 735         while (*addresses) {
 736                 if (*addresses == ',' || *addresses == ';')
 737                         ++count;
 738                 ++addresses;
 739         }
 740
 741         return count;
 742 }
 743
 744
 745 /* get the new To:, based on the old header,
 746  * result is newly allocated or NULL in case of error
 747  * */
 748 static gchar*
 749 get_new_to (TnyMsg *msg, TnyHeader *header, const gchar* from,
 750             ModestTnyMsgReplyMode reply_mode)
 751 {
 752         const gchar* old_reply_to;
 753         gchar* old_from;
 754         gchar* new_to;
 755
 756         /* according to RFC2369 (http://www.faqs.org/rfcs/rfc2369.html), we
 757          * can identify Mailing-List posts by the List-Help header.
 758          * for mailing lists, both the Reply-To: and From: should be included
 759          * in the new To:; for now, we're ignoring List-Post
 760          */
 761         gchar* list_help = modest_tny_mime_part_get_header_value (TNY_MIME_PART(msg),
 762                                                                   "List-Help");
 763         gboolean is_mailing_list = (list_help != NULL);
 764         g_free (list_help);
 765
 766
 767         /* reply to sender, use ReplyTo or From */
 768         //old_reply_to = tny_header_get_replyto (header);
 769         old_reply_to = modest_tny_mime_part_get_header_value (TNY_MIME_PART(msg),
 770                                                               "Reply-To");
 771         old_from     = tny_header_dup_from (header);
 772
 773         if (!old_from &&  !old_reply_to) {
 774                 g_warning ("%s: failed to get either Reply-To: or From: from header",
 775                            __FUNCTION__);
 776                 return NULL;
 777         }
 778
 779         /* for mailing lists, use both Reply-To and From if we did a
 780          * 'Reply All:'
 781          * */
 782         if (is_mailing_list && reply_mode == MODEST_TNY_MSG_REPLY_MODE_ALL &&
 783             old_reply_to && old_from && strcmp (old_from, old_reply_to) != 0)
 784                 new_to = g_strjoin (",", old_reply_to, old_from, NULL);
 785         else
 786                 /* otherwise use either Reply-To: (preferred) or From: */
 787                 new_to = g_strdup (old_reply_to ? old_reply_to : old_from);
 788         g_free (old_from);
 789
 790         /* in case of ReplyAll, we need to add the Recipients in the old To: */
 791         if (reply_mode == MODEST_TNY_MSG_REPLY_MODE_ALL) {
 792                 gchar *old_to = tny_header_dup_to (header);
 793                 if (!old_to)
 794                         g_warning ("%s: no To: address found in source mail",
 795                                    __FUNCTION__);
 796                 else {
 797                         /* append the old To: */
 798                         gchar *tmp = g_strjoin (",", new_to, old_to, NULL);
 799                         g_free (new_to);
 800                         new_to = tmp;
 801                         g_free (old_to);
 802                 }
 803
 804                 /* remove duplicate entries */
 805                 gchar *tmp = modest_text_utils_remove_duplicate_addresses (new_to);
 806                 g_free (new_to);
 807                 new_to = tmp;
 808
 809                 /* now, strip me (the new From:) from the new_to, but only if
 810                  * there are >1 addresses there */
 811                 if (count_addresses (new_to) > 1) {
 812                         gchar *tmp = modest_text_utils_remove_address (new_to, from);
 813                         g_free (new_to);
 814                         new_to = tmp;
 815                 }
 816         }
 817
 818         return new_to;
 819 }
 820
 821
 822 /* get the new Cc:, based on the old header,
 823  * result is newly allocated or NULL in case of error */
 824 static gchar*
 825 get_new_cc (TnyHeader *header, const gchar* from)
 826 {
 827         gchar *old_cc;
 828         gchar *result;
 829
 830         old_cc = tny_header_dup_cc (header);
 831         if (!old_cc)
 832                 return NULL;
 833
 834         /* remove me (the new From:) from the Cc: list */
 835         result =  modest_text_utils_remove_address (old_cc, from);
 836         g_free (old_cc);
 837         return result;
 838 }
 839
 840
 841 TnyMsg*
 842 modest_tny_msg_create_reply_msg (TnyMsg *msg,
 843                                  TnyHeader *header,
 844                                  const gchar *from,
 845                                  const gchar *signature,
 846                                  ModestTnyMsgReplyType reply_type,
 847                                  ModestTnyMsgReplyMode reply_mode)
 848 {
 849         TnyMsg *new_msg = NULL;
 850         TnyHeader *new_header;
 851         gchar *new_to = NULL;
 852         TnyList *parts = NULL;
 853         GList *attachments_list = NULL;
 854
 855         g_return_val_if_fail (msg && TNY_IS_MSG(msg), NULL);
 856
 857         parts = TNY_LIST (tny_simple_list_new());
 858         tny_mime_part_get_parts (TNY_MIME_PART (msg), parts);
 859         tny_list_foreach (parts, add_if_attachment, &attachments_list);
 860
 861         new_msg = create_reply_forward_mail (msg, header, from, signature, TRUE, reply_type,
 862                                              attachments_list);
 863         if (attachments_list != NULL) {
 864                 g_list_foreach (attachments_list, (GFunc) g_object_unref, NULL);
 865                 g_list_free (attachments_list);
 866         }
 867         if (parts)
 868                 g_object_unref (G_OBJECT (parts));
 869
 870         /* Fill the header */
 871         if (header)
 872                 g_object_ref (header);
 873         else
 874                 header = tny_msg_get_header (msg);
 875
 876
 877         new_header = tny_msg_get_header(new_msg);
 878         new_to = get_new_to (msg, header, from, reply_mode);
 879         if (!new_to)
 880                 g_warning ("%s: failed to get new To:", __FUNCTION__);
 881         else {
 882                 tny_header_set_to (new_header, new_to);
 883                 g_free (new_to);
 884         }
 885
 886         if (reply_mode == MODEST_TNY_MSG_REPLY_MODE_ALL) {
 887                 gchar *new_cc = get_new_cc (header, from);
 888                 if (new_cc) {
 889                         tny_header_set_cc (new_header, new_cc);
 890                         g_free (new_cc);
 891                 }
 892         }
 893
 894         /* Clean */
 895         g_object_unref (G_OBJECT (new_header));
 896         g_object_unref (G_OBJECT (header));
 897
 898         return new_msg;
 899 }
 900
 901
 902 static gboolean
 903 is_ascii(const gchar *s)
 904 {
 905         if (!s)
 906                 return TRUE;
 907         while (s[0]) {
 908                 if (s[0] & 128 || s[0] < 32)
 909                         return FALSE;
 910                 s++;
 911         }
 912         return TRUE;
 913 }
 914
 915 static char *
 916 get_content_type(const gchar *s)
 917 {
 918         GString *type;
 919
 920         type = g_string_new("text/plain");
 921         if (!is_ascii(s)) {
 922                 if (g_utf8_validate(s, -1, NULL)) {
 923                         g_string_append(type, "; charset=\"utf-8\"");
 924                 } else {
 925                         /* it should be impossible to reach this, but better safe than sorry */
 926                         g_warning("invalid utf8 in message");
 927                         g_string_append(type, "; charset=\"latin1\"");
 928                 }
 929         }
 930         return g_string_free(type, FALSE);
 931 }
 932
 933 guint64
 934 modest_tny_msg_estimate_size (const gchar *plain_body, const gchar *html_body,
 935                               guint64 parts_count,
 936                               guint64 parts_size)
 937 {
 938         guint64 result;
 939
 940         /* estimation of headers size */
 941         result = 1024;
 942
 943         /* We add a 20% of size due to the increase in 7bit encoding */
 944         if (plain_body) {
 945                 result += strlen (plain_body) * 120 / 100;
 946         }
 947         if (html_body) {
 948                 result += strlen (html_body) * 120 / 100;
 949         }
 950
 951         /* 256 bytes per additional part because of their headers */
 952         result += parts_count * 256;
 953
 954         /* 150% of increase per encoding */
 955         result += parts_size * 3 / 2;
 956
 957         return result;
 958 }