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