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