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_decoded_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_set_transfer_encoding (TNY_MIME_PART (attachment_part), "base64");
 309                         tny_mime_part_add_part (TNY_MIME_PART (part), attachment_part);
 310                         if (old_cid)
 311                                 tny_mime_part_set_content_id (attachment_part, old_cid);
 312                         g_object_unref (attachment_part);
 313                 }
 314         }
 315 }
 316
 317 static void
 318 add_images (TnyMsg *msg, GList *images_list)
 319 {
 320         TnyMimePart *related_part = NULL;
 321         const gchar *content_type;
 322
 323         content_type = tny_mime_part_get_content_type (TNY_MIME_PART (msg));
 324
 325         if ((content_type != NULL) && !strcasecmp (content_type, "multipart/related")) {
 326                 related_part = g_object_ref (msg);
 327         } else if ((content_type != NULL) && !strcasecmp (content_type, "multipart/mixed")) {
 328                 TnyList *parts = TNY_LIST (tny_simple_list_new ());
 329                 TnyIterator *iter = NULL;
 330                 tny_mime_part_get_parts (TNY_MIME_PART (msg), parts);
 331                 iter = tny_list_create_iterator (parts);
 332
 333                 while (!tny_iterator_is_done (iter)) {
 334                         TnyMimePart *part = TNY_MIME_PART (tny_iterator_get_current (iter));
 335                         if (part && !g_strcasecmp (tny_mime_part_get_content_type (part), "multipart/related")) {
 336                                 related_part = part;
 337                                 break;
 338                         } else {
 339                                 g_object_unref (part);
 340                         }
 341                         tny_iterator_next (iter);
 342                 }
 343                 g_object_unref (iter);
 344                 g_object_unref (parts);
 345         }
 346
 347         if (related_part != NULL) {
 348                 /* TODO: attach images in their proper place */
 349                 add_attachments (related_part, images_list, TRUE);
 350                 g_object_unref (related_part);
 351         }
 352 }
 353
 354
 355 gchar *
 356 modest_tny_msg_get_body (TnyMsg *msg, gboolean want_html, gboolean *is_html)
 357 {
 358         TnyStream *stream;
 359         TnyMimePart *body;
 360         GtkTextBuffer *buf;
 361         GtkTextIter start, end;
 362         gchar *to_quote;
 363         gboolean result_was_html = TRUE;
 364
 365         g_return_val_if_fail (msg && TNY_IS_MSG(msg), NULL);
 366
 367         body = modest_tny_msg_find_body_part(msg, want_html);
 368         if (!body)
 369                 return NULL;
 370
 371         buf = gtk_text_buffer_new (NULL);
 372         stream = TNY_STREAM (tny_gtk_text_buffer_stream_new (buf));
 373         tny_stream_reset (stream);
 374         tny_mime_part_decode_to_stream (body, stream, NULL);
 375         tny_stream_reset (stream);
 376
 377         gtk_text_buffer_get_bounds (buf, &start, &end);
 378         to_quote = gtk_text_buffer_get_text (buf, &start, &end, FALSE);
 379         if (tny_mime_part_content_type_is (body, "text/plain")) {
 380                 gchar *to_quote_converted = modest_text_utils_convert_to_html (to_quote);
 381                 g_free (to_quote);
 382                 to_quote = to_quote_converted;
 383                 result_was_html = FALSE;
 384         }
 385
 386         g_object_unref (buf);
 387         g_object_unref (G_OBJECT(stream));
 388         g_object_unref (G_OBJECT(body));
 389
 390         if (is_html != NULL)
 391                 *is_html = result_was_html;
 392
 393         return to_quote;
 394 }
 395
 396
 397 TnyMimePart*
 398 modest_tny_msg_find_body_part_from_mime_part (TnyMimePart *msg, gboolean want_html)
 399 {
 400         const gchar *desired_mime_type = want_html ? "text/html" : "text/plain";
 401         TnyMimePart *part = NULL;
 402         TnyList *parts = NULL;
 403         TnyIterator *iter = NULL;
 404         gchar *header_content_type;
 405         gchar *header_content_type_lower;
 406
 407         if (!msg)
 408                 return NULL;
 409
 410         /* If it's an application multipart, then we don't get into as we don't
 411          * support them (for example application/sml or wap messages */
 412         header_content_type = modest_tny_mime_part_get_header_value (msg, "Content-Type");
 413         header_content_type = g_strstrip (header_content_type);
 414         header_content_type_lower = header_content_type?g_ascii_strdown (header_content_type, -1):NULL;
 415         if (header_content_type_lower &&
 416             g_str_has_prefix (header_content_type_lower, "multipart/") &&
 417             strstr (header_content_type_lower, "application/")) {
 418                 g_free (header_content_type_lower);
 419                 g_free (header_content_type);
 420                 return NULL;
 421         }
 422         g_free (header_content_type_lower);
 423         g_free (header_content_type);
 424
 425         parts = TNY_LIST (tny_simple_list_new());
 426         tny_mime_part_get_parts (TNY_MIME_PART (msg), parts);
 427
 428         iter  = tny_list_create_iterator(parts);
 429
 430         /* no parts? assume it's single-part message */
 431         if (tny_iterator_is_done(iter)) {
 432                 const gchar *content_type;
 433                 g_object_unref (G_OBJECT(iter));
 434                 content_type = tny_mime_part_get_content_type (msg);
 435                 /* if this part cannot be a supported body return NULL */
 436                 if (!g_str_has_prefix (content_type, "text/")) {
 437                         return NULL;
 438                 } else {
 439                         return TNY_MIME_PART (g_object_ref(G_OBJECT(msg)));
 440                 }
 441         } else {
 442                 do {
 443                         gchar *tmp, *content_type = NULL;
 444                         gboolean has_content_disp_name = FALSE;
 445
 446                         part = TNY_MIME_PART(tny_iterator_get_current (iter));
 447
 448                         if (!part) {
 449                                 g_warning ("%s: not a valid mime part", __FUNCTION__);
 450                                 continue;
 451                         }
 452
 453                         /* it's a message --> ignore */
 454                         if (part && TNY_IS_MSG (part)) {
 455                                 g_object_unref (part);
 456                                 tny_iterator_next (iter);
 457                                 continue;
 458                         }
 459
 460                         /* we need to strdown the content type, because
 461                          * tny_mime_part_has_content_type does not do it...
 462                          */
 463                         content_type = g_ascii_strdown (tny_mime_part_get_content_type (part), -1);
 464
 465                         /* mime-parts with a content-disposition header (either 'inline' or 'attachment')
 466                          * and a 'name=' thingy cannot be body parts
 467                          */
 468
 469                         tmp = modest_tny_mime_part_get_header_value (part, "Content-Disposition");
 470                         if (tmp) {
 471                                 gchar *content_disp = g_ascii_strdown(tmp, -1);
 472                                 g_free (tmp);
 473                                 has_content_disp_name = g_strstr_len (content_disp, strlen(content_disp), "name=") != NULL;
 474                                 g_free (content_disp);
 475                         }
 476
 477                         if (g_str_has_prefix (content_type, desired_mime_type) && !has_content_disp_name) {
 478                                 /* we found the desired mime-type! */
 479                                 g_free (content_type);
 480                                 break;
 481
 482                         } else  if (g_str_has_prefix(content_type, "multipart")) {
 483
 484                                 /* multipart? recurse! */
 485                                 g_object_unref (part);
 486                                 g_free (content_type);
 487                                 part = modest_tny_msg_find_body_part_from_mime_part (part, want_html);
 488                                 if (part)
 489                                         break;
 490                         } else
 491                                 g_free (content_type);
 492
 493                         if (part) {
 494                                 g_object_unref (G_OBJECT(part));
 495                                 part = NULL;
 496                         }
 497
 498                         tny_iterator_next (iter);
 499
 500                 } while (!tny_iterator_is_done(iter));
 501         }
 502
 503         g_object_unref (G_OBJECT(iter));
 504         g_object_unref (G_OBJECT(parts));
 505
 506         /* if were trying to find an HTML part and couldn't find it,
 507          * try to find a text/plain part instead
 508          */
 509         if (!part && want_html)
 510                 return modest_tny_msg_find_body_part_from_mime_part (msg, FALSE);
 511         else
 512                 return part; /* this maybe NULL, this is not an error; some message just don't have a body
 513                               * part */
 514 }
 515
 516
 517 TnyMimePart*
 518 modest_tny_msg_find_body_part (TnyMsg *msg, gboolean want_html)
 519 {
 520         g_return_val_if_fail (msg && TNY_IS_MSG(msg), NULL);
 521
 522         return modest_tny_msg_find_body_part_from_mime_part (TNY_MIME_PART(msg),
 523                                                              want_html);
 524 }
 525
 526
 527 #define MODEST_TNY_MSG_PARENT_UID "parent-uid"
 528
 529 static TnyMsg *
 530 create_reply_forward_mail (TnyMsg *msg, TnyHeader *header, const gchar *from,
 531                            const gchar *signature, gboolean is_reply,
 532                            guint type /*ignored*/, GList *attachments)
 533 {
 534         TnyMsg *new_msg;
 535         TnyHeader *new_header;
 536         gchar *new_subject;
 537         TnyMimePart *body = NULL;
 538         ModestFormatter *formatter;
 539         gchar *subject_prefix;
 540         gboolean no_text_part;
 541
 542         if (header)
 543                 g_object_ref (header);
 544         else
 545                 header = tny_msg_get_header (msg);
 546
 547         /* Get body from original msg. Always look for the text/plain
 548            part of the message to create the reply/forwarded mail */
 549         if (msg != NULL)
 550                 body   = modest_tny_msg_find_body_part (msg, FALSE);
 551
 552         if (modest_conf_get_bool (modest_runtime_get_conf (), MODEST_CONF_PREFER_FORMATTED_TEXT,
 553                                   NULL))
 554                 formatter = modest_formatter_new ("text/html", signature);
 555         else
 556                 formatter = modest_formatter_new ("text/plain", signature);
 557
 558
 559         /* if we don't have a text-part */
 560         no_text_part = (!body) || (strcmp (tny_mime_part_get_content_type (body), "text/html")==0);
 561
 562         /* when we're reply, include the text part if we have it, or nothing otherwise. */
 563         if (is_reply)
 564                 new_msg = modest_formatter_quote  (formatter, no_text_part ? NULL: body, header,
 565                                                     attachments);
 566         else {
 567                 /* for attachements; inline if there is a text part, and include the
 568                  * full old mail if there was none */
 569                 if (no_text_part) {
 570                         new_msg = modest_formatter_attach (formatter, msg, header);
 571                 } else {
 572                         new_msg = modest_formatter_inline  (formatter, body, header,
 573                                                             attachments);
 574                 }
 575         }
 576
 577         g_object_unref (G_OBJECT(formatter));
 578         if (body)
 579                 g_object_unref (G_OBJECT(body));
 580
 581         /* Fill the header */
 582         new_header = tny_msg_get_header (new_msg);
 583         tny_header_set_from (new_header, from);
 584         tny_header_set_replyto (new_header, from);
 585
 586         /* Change the subject */
 587         if (is_reply)
 588                 subject_prefix = g_strconcat (_("mail_va_re"), ":", NULL);
 589         else
 590                 subject_prefix = g_strconcat (_("mail_va_fw"), ":", NULL);
 591         new_subject =
 592                 (gchar *) modest_text_utils_derived_subject (tny_header_get_subject(header),
 593                                                              subject_prefix);
 594         g_free (subject_prefix);
 595         tny_header_set_subject (new_header, (const gchar *) new_subject);
 596         g_free (new_subject);
 597
 598         /* get the parent uid, and set it as a gobject property on the new msg */
 599         if (new_msg) {
 600                 gchar* parent_uid = modest_tny_folder_get_header_unique_id (header);
 601                 g_object_set_data_full (G_OBJECT(new_msg), MODEST_TNY_MSG_PARENT_UID,
 602                                         parent_uid, g_free);
 603         }
 604
 605         /* set modest as the X-Mailer
 606          * we could this in the platform factory, but then the header
 607          * would show up before all the others.
 608          */
 609         tny_mime_part_set_header_pair (TNY_MIME_PART (msg), "X-Mailer", "Modest "
 610                                        VERSION);
 611
 612         /* Clean */
 613         g_object_unref (G_OBJECT (new_header));
 614         g_object_unref (G_OBJECT (header));
 615         /* ugly to unref it here instead of in the calling func */
 616
 617         if (!is_reply & !no_text_part) {
 618                 add_attachments (TNY_MIME_PART (new_msg), attachments, FALSE);
 619         }
 620
 621         return new_msg;
 622 }
 623
 624 const gchar*
 625 modest_tny_msg_get_parent_uid (TnyMsg *msg)
 626 {
 627         g_return_val_if_fail (msg && TNY_IS_MSG(msg), NULL);
 628
 629         return g_object_get_data (G_OBJECT(msg), MODEST_TNY_MSG_PARENT_UID);
 630 }
 631
 632
 633
 634 static void
 635 add_if_attachment (gpointer data, gpointer user_data)
 636 {
 637         TnyMimePart *part;
 638         GList **attachments_list;
 639
 640         part = TNY_MIME_PART (data);
 641         attachments_list = ((GList **) user_data);
 642
 643         if ((tny_mime_part_is_attachment (part))||(TNY_IS_MSG (part))) {
 644                 *attachments_list = g_list_prepend (*attachments_list, part);
 645                 g_object_ref (part);
 646         }
 647 }
 648
 649 TnyMsg*
 650 modest_tny_msg_create_forward_msg (TnyMsg *msg,
 651                                    const gchar *from,
 652                                    const gchar *signature,
 653                                    ModestTnyMsgForwardType forward_type)
 654 {
 655         TnyMsg *new_msg;
 656         TnyList *parts = NULL;
 657         GList *attachments_list = NULL;
 658
 659         g_return_val_if_fail (msg && TNY_IS_MSG(msg), NULL);
 660
 661         /* Add attachments */
 662         parts = TNY_LIST (tny_simple_list_new());
 663         tny_mime_part_get_parts (TNY_MIME_PART (msg), parts);
 664         tny_list_foreach (parts, add_if_attachment, &attachments_list);
 665
 666         new_msg = create_reply_forward_mail (msg, NULL, from, signature, FALSE, forward_type,
 667                                              attachments_list);
 668
 669         /* Clean */
 670         if (attachments_list) {
 671                 g_list_foreach (attachments_list, (GFunc) g_object_unref, NULL);
 672                 g_list_free (attachments_list);
 673         }
 674         g_object_unref (G_OBJECT (parts));
 675
 676         return new_msg;
 677 }
 678
 679
 680
 681 static gint
 682 count_addresses (const gchar* addresses)
 683 {
 684         gint count = 1;
 685
 686         if (!addresses)
 687                 return 0;
 688
 689         while (*addresses) {
 690                 if (*addresses == ',' || *addresses == ';')
 691                         ++count;
 692                 ++addresses;
 693         }
 694
 695         return count;
 696 }
 697
 698
 699 /* get the new To:, based on the old header,
 700  * result is newly allocated or NULL in case of error
 701  * */
 702 static gchar*
 703 get_new_to (TnyMsg *msg, TnyHeader *header, const gchar* from,
 704             ModestTnyMsgReplyMode reply_mode)
 705 {
 706         const gchar* old_reply_to;
 707         const gchar* old_from;
 708         gchar* new_to;
 709
 710         /* according to RFC2369 (http://www.faqs.org/rfcs/rfc2369.html), we
 711          * can identify Mailing-List posts by the List-Help header.
 712          * for mailing lists, both the Reply-To: and From: should be included
 713          * in the new To:; for now, we're ignoring List-Post
 714          */
 715         gchar* list_help = modest_tny_mime_part_get_header_value (TNY_MIME_PART(msg),
 716                                                                   "List-Help");
 717         gboolean is_mailing_list = (list_help != NULL);
 718         g_free (list_help);
 719
 720
 721         /* reply to sender, use ReplyTo or From */
 722         //old_reply_to = tny_header_get_replyto (header);
 723         old_reply_to = modest_tny_mime_part_get_header_value (TNY_MIME_PART(msg),
 724                                                               "Reply-To");
 725         old_from     = tny_header_get_from (header);
 726
 727         if (!old_from &&  !old_reply_to) {
 728                 g_warning ("%s: failed to get either Reply-To: or From: from header",
 729                            __FUNCTION__);
 730                 return NULL;
 731         }
 732
 733         /* for mailing lists, use both Reply-To and From if we did a
 734          * 'Reply All:'
 735          * */
 736         if (is_mailing_list && reply_mode == MODEST_TNY_MSG_REPLY_MODE_ALL &&
 737             old_reply_to && old_from && strcmp (old_from, old_reply_to) != 0)
 738                 new_to = g_strjoin (",", old_reply_to, old_from, NULL);
 739         else
 740                 /* otherwise use either Reply-To: (preferred) or From: */
 741                 new_to = g_strdup (old_reply_to ? old_reply_to : old_from);
 742
 743         /* in case of ReplyAll, we need to add the Recipients in the old To: */
 744         if (reply_mode == MODEST_TNY_MSG_REPLY_MODE_ALL) {
 745                 const gchar *old_to = tny_header_get_to (header);
 746                 if (!old_to)
 747                         g_warning ("%s: no To: address found in source mail",
 748                                    __FUNCTION__);
 749                 else {
 750                         /* append the old To: */
 751                         gchar *tmp = g_strjoin (",", new_to, old_to, NULL);
 752                         g_free (new_to);
 753                         new_to = tmp;
 754                 }
 755
 756                 /* remove duplicate entries */
 757                 gchar *tmp = modest_text_utils_remove_duplicate_addresses (new_to);
 758                 g_free (new_to);
 759                 new_to = tmp;
 760
 761                 /* now, strip me (the new From:) from the new_to, but only if
 762                  * there are >1 addresses there */
 763                 if (count_addresses (new_to) > 1) {
 764                         gchar *tmp = modest_text_utils_remove_address (new_to, from);
 765                         g_free (new_to);
 766                         new_to = tmp;
 767                 }
 768         }
 769
 770         return new_to;
 771 }
 772
 773
 774 /* get the new Cc:, based on the old header,
 775  * result is newly allocated or NULL in case of error */
 776 static gchar*
 777 get_new_cc (TnyHeader *header, const gchar* from)
 778 {
 779         const gchar *old_cc;
 780
 781         old_cc = tny_header_get_cc (header);
 782         if (!old_cc)
 783                 return NULL;
 784
 785         /* remove me (the new From:) from the Cc: list */
 786         return modest_text_utils_remove_address (old_cc, from);
 787 }
 788
 789
 790 TnyMsg*
 791 modest_tny_msg_create_reply_msg (TnyMsg *msg,
 792                                  TnyHeader *header,
 793                                  const gchar *from,
 794                                  const gchar *signature,
 795                                  ModestTnyMsgReplyType reply_type,
 796                                  ModestTnyMsgReplyMode reply_mode)
 797 {
 798         TnyMsg *new_msg = NULL;
 799         TnyHeader *new_header;
 800         gchar *new_to = NULL;
 801         TnyList *parts = NULL;
 802         GList *attachments_list = NULL;
 803
 804         g_return_val_if_fail (msg && TNY_IS_MSG(msg), NULL);
 805
 806         parts = TNY_LIST (tny_simple_list_new());
 807         tny_mime_part_get_parts (TNY_MIME_PART (msg), parts);
 808         tny_list_foreach (parts, add_if_attachment, &attachments_list);
 809
 810         new_msg = create_reply_forward_mail (msg, header, from, signature, TRUE, reply_type,
 811                                              attachments_list);
 812         if (attachments_list) {
 813                 g_list_foreach (attachments_list, (GFunc) g_object_unref, NULL);
 814                 g_list_free (attachments_list);
 815         }
 816         if (parts)
 817                 g_object_unref (G_OBJECT (parts));
 818
 819         /* Fill the header */
 820         if (header)
 821                 g_object_ref (header);
 822         else
 823                 header = tny_msg_get_header (msg);
 824
 825
 826         new_header = tny_msg_get_header(new_msg);
 827         new_to = get_new_to (msg, header, from, reply_mode);
 828         if (!new_to)
 829                 g_warning ("%s: failed to get new To:", __FUNCTION__);
 830         else {
 831                 tny_header_set_to (new_header, new_to);
 832                 g_free (new_to);
 833         }
 834
 835         if (reply_mode == MODEST_TNY_MSG_REPLY_MODE_ALL) {
 836                 gchar *new_cc = get_new_cc (header, from);
 837                 if (new_cc) {
 838                         tny_header_set_cc (new_header, new_cc);
 839                         g_free (new_cc);
 840                 }
 841         }
 842
 843         /* Clean */
 844         g_object_unref (G_OBJECT (new_header));
 845         g_object_unref (G_OBJECT (header));
 846
 847         return new_msg;
 848 }
 849
 850
 851 static gboolean
 852 is_ascii(const gchar *s)
 853 {
 854         if (!s)
 855                 return TRUE;
 856         while (s[0]) {
 857                 if (s[0] & 128 || s[0] < 32)
 858                         return FALSE;
 859                 s++;
 860         }
 861         return TRUE;
 862 }
 863
 864 static char *
 865 get_content_type(const gchar *s)
 866 {
 867         GString *type;
 868
 869         type = g_string_new("text/plain");
 870         if (!is_ascii(s)) {
 871                 if (g_utf8_validate(s, -1, NULL)) {
 872                         g_string_append(type, "; charset=\"utf-8\"");
 873                 } else {
 874                         /* it should be impossible to reach this, but better safe than sorry */
 875                         g_warning("invalid utf8 in message");
 876                         g_string_append(type, "; charset=\"latin1\"");
 877                 }
 878         }
 879         return g_string_free(type, FALSE);
 880 }
 881
 882 guint64
 883 modest_tny_msg_estimate_size (const gchar *plain_body, const gchar *html_body,
 884                               guint64 parts_count,
 885                               guint64 parts_size)
 886 {
 887         guint64 result;
 888
 889         /* estimation of headers size */
 890         result = 1024;
 891
 892         /* We add a 20% of size due to the increase in 7bit encoding */
 893         if (plain_body) {
 894                 result += strlen (plain_body) * 120 / 100;
 895         }
 896         if (html_body) {
 897                 result += strlen (html_body) * 120 / 100;
 898         }
 899
 900         /* 256 bytes per additional part because of their headers */
 901         result += parts_count * 256;
 902
 903         /* 150% of increase per encoding */
 904         result += parts_size * 3 / 2;
 905
 906         return result;
 907 }