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