git.maemo.org Git - modest/blob - src/modest-formatter.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 <glib/gi18n.h>
  31 #include <string.h>
  32 #include <tny-header.h>
  33 #include <tny-simple-list.h>
  34 #include <tny-gtk-text-buffer-stream.h>
  35 #include <tny-camel-mem-stream.h>
  36 #include "modest-formatter.h"
  37 #include "modest-text-utils.h"
  38 #include "modest-tny-platform-factory.h"
  39 #include <modest-runtime.h>
  40
  41 #define MAX_BODY_LENGTH 4096
  42
  43 typedef struct _ModestFormatterPrivate ModestFormatterPrivate;
  44 struct _ModestFormatterPrivate {
  45         gchar *content_type;
  46         gchar *signature;
  47 };
  48 #define MODEST_FORMATTER_GET_PRIVATE(o)  (G_TYPE_INSTANCE_GET_PRIVATE((o), \
  49                                           MODEST_TYPE_FORMATTER, \
  50                                           ModestFormatterPrivate))
  51
  52 static GObjectClass *parent_class = NULL;
  53
  54 typedef gchar* FormatterFunc (ModestFormatter *self, const gchar *text, TnyHeader *header, GList *attachments);
  55
  56 static TnyMsg *modest_formatter_do (ModestFormatter *self, TnyMimePart *body,  TnyHeader *header,
  57                                     FormatterFunc func, GList *attachments);
  58
  59 static gchar*  modest_formatter_wrapper_cite   (ModestFormatter *self, const gchar *text,
  60                                                 TnyHeader *header, GList *attachments);
  61 static gchar*  modest_formatter_wrapper_quote  (ModestFormatter *self, const gchar *text,
  62                                                 TnyHeader *header, GList *attachments);
  63 static gchar*  modest_formatter_wrapper_inline (ModestFormatter *self, const gchar *text,
  64                                                 TnyHeader *header, GList *attachments);
  65
  66 static TnyMimePart *find_body_parent (TnyMimePart *part);
  67
  68 static gchar *
  69 extract_text (ModestFormatter *self, TnyMimePart *body)
  70 {
  71         TnyStream *mp_stream;
  72         TnyStream *stream;
  73         GtkTextBuffer *buf;
  74         GtkTextIter start, end;
  75         gchar *text, *converted_text;
  76         ModestFormatterPrivate *priv;
  77         gint total;
  78
  79         buf = gtk_text_buffer_new (NULL);
  80         stream = TNY_STREAM (tny_gtk_text_buffer_stream_new (buf));
  81         tny_stream_reset (stream);
  82         mp_stream = tny_mime_part_get_decoded_stream (body);
  83
  84         total = 0;
  85
  86         while (!tny_stream_is_eos (mp_stream)) {
  87                 gchar buffer [128];
  88                 gint n_read;
  89                 gint next_read;
  90
  91                 next_read = MIN (128, MAX_BODY_LENGTH - total);
  92                 if (next_read == 0)
  93                         break;
  94                 n_read = tny_stream_read (mp_stream, buffer, next_read);
  95                 if (n_read > 0) {
  96                         gint n_write;
  97                         n_write = tny_stream_write (stream, buffer, n_read);
  98                         total += n_write;
  99                 } else if (n_read == -1) {
 100                         break;
 101                 }
 102         }
 103
 104         tny_stream_reset (stream);
 105
 106         g_object_unref (G_OBJECT(stream));
 107
 108         gtk_text_buffer_get_bounds (buf, &start, &end);
 109         text = gtk_text_buffer_get_text (buf, &start, &end, FALSE);
 110         g_object_unref (G_OBJECT(buf));
 111
 112         /* Convert to desired content type if needed */
 113         priv = MODEST_FORMATTER_GET_PRIVATE (self);
 114
 115         if (strcmp (tny_mime_part_get_content_type (body), priv->content_type) == 0) {
 116                 if (!strcmp (priv->content_type, "text/html"))
 117                         converted_text = modest_text_utils_convert_to_html  (text);
 118                 else
 119                         converted_text = g_strdup (text);
 120
 121                 g_free (text);
 122                 text = converted_text;
 123         }
 124         return text;
 125 }
 126
 127 static void
 128 construct_from_text (TnyMimePart *part,
 129                      const gchar *text,
 130                      const gchar *content_type)
 131 {
 132         TnyStream *text_body_stream;
 133
 134         /* Create the stream */
 135         text_body_stream = TNY_STREAM (tny_camel_mem_stream_new_with_buffer
 136                                         (text, strlen(text)));
 137
 138         /* Construct MIME part */
 139         tny_stream_reset (text_body_stream);
 140         tny_mime_part_construct (part, text_body_stream, content_type, "7bit");
 141         tny_stream_reset (text_body_stream);
 142
 143         /* Clean */
 144         g_object_unref (G_OBJECT (text_body_stream));
 145 }
 146
 147 static TnyMsg *
 148 modest_formatter_do (ModestFormatter *self, TnyMimePart *body, TnyHeader *header, FormatterFunc func,
 149                      GList *attachments)
 150 {
 151         TnyMsg *new_msg = NULL;
 152         gchar *body_text = NULL, *txt = NULL;
 153         ModestFormatterPrivate *priv;
 154         TnyMimePart *body_part = NULL;
 155
 156         g_return_val_if_fail (self, NULL);
 157         g_return_val_if_fail (header, NULL);
 158         g_return_val_if_fail (func, NULL);
 159
 160         /* Build new part */
 161         new_msg = modest_formatter_create_message (self, TRUE, attachments != NULL, FALSE);
 162         body_part = modest_formatter_create_body_part (self, new_msg);
 163
 164         if (body)
 165                 body_text = extract_text (self, body);
 166         else
 167                 body_text = g_strdup ("");
 168
 169         txt = (gchar *) func (self, (const gchar*) body_text, header, attachments);
 170         priv = MODEST_FORMATTER_GET_PRIVATE (self);
 171         construct_from_text (TNY_MIME_PART (body_part), (const gchar*) txt, priv->content_type);
 172         g_object_unref (body_part);
 173
 174         /* Clean */
 175         g_free (body_text);
 176         g_free (txt);
 177
 178         return new_msg;
 179 }
 180
 181 TnyMsg *
 182 modest_formatter_cite (ModestFormatter *self, TnyMimePart *body, TnyHeader *header)
 183 {
 184         return modest_formatter_do (self, body, header, modest_formatter_wrapper_cite, NULL);
 185 }
 186
 187 TnyMsg *
 188 modest_formatter_quote (ModestFormatter *self, TnyMimePart *body, TnyHeader *header, GList *attachments)
 189 {
 190         return modest_formatter_do (self, body, header, modest_formatter_wrapper_quote, attachments);
 191 }
 192
 193 TnyMsg *
 194 modest_formatter_inline (ModestFormatter *self, TnyMimePart *body, TnyHeader *header, GList *attachments)
 195 {
 196         return modest_formatter_do (self, body, header, modest_formatter_wrapper_inline, attachments);
 197 }
 198
 199 TnyMsg *
 200 modest_formatter_attach (ModestFormatter *self, TnyMsg *msg, TnyHeader *header)
 201 {
 202         TnyMsg *new_msg = NULL;
 203         TnyMimePart *body_part = NULL;
 204         ModestFormatterPrivate *priv;
 205         gchar *txt;
 206
 207         /* Build new part */
 208         new_msg     = modest_formatter_create_message (self, TRUE, TRUE, FALSE);
 209         body_part = modest_formatter_create_body_part (self, new_msg);
 210
 211         /* Create the two parts */
 212         priv = MODEST_FORMATTER_GET_PRIVATE (self);
 213         txt = modest_text_utils_cite ("", priv->content_type, priv->signature,
 214                                       NULL, tny_header_get_date_sent (header));
 215         construct_from_text (body_part, txt, priv->content_type);
 216         g_free (txt);
 217         g_object_unref (body_part);
 218
 219         if (msg) {
 220                 /* Add parts */
 221                 tny_mime_part_add_part (TNY_MIME_PART (new_msg), TNY_MIME_PART (msg));
 222         }
 223
 224         return new_msg;
 225 }
 226
 227 ModestFormatter*
 228 modest_formatter_new (const gchar *content_type, const gchar *signature)
 229 {
 230         ModestFormatter *formatter;
 231         ModestFormatterPrivate *priv;
 232
 233         formatter = g_object_new (MODEST_TYPE_FORMATTER, NULL);
 234         priv = MODEST_FORMATTER_GET_PRIVATE (formatter);
 235         priv->content_type = g_strdup (content_type);
 236         priv->signature = g_strdup (signature);
 237
 238         return formatter;
 239 }
 240
 241 static void
 242 modest_formatter_instance_init (GTypeInstance *instance, gpointer g_class)
 243 {
 244         ModestFormatter *self = (ModestFormatter *)instance;
 245         ModestFormatterPrivate *priv = MODEST_FORMATTER_GET_PRIVATE (self);
 246
 247         priv->content_type = NULL;
 248         priv->signature = NULL;
 249 }
 250
 251 static void
 252 modest_formatter_finalize (GObject *object)
 253 {
 254         ModestFormatter *self = (ModestFormatter *)object;
 255         ModestFormatterPrivate *priv = MODEST_FORMATTER_GET_PRIVATE (self);
 256
 257         if (priv->content_type)
 258                 g_free (priv->content_type);
 259
 260         if (priv->signature)
 261                 g_free (priv->signature);
 262
 263         (*parent_class->finalize) (object);
 264 }
 265
 266 static void
 267 modest_formatter_class_init (ModestFormatterClass *class)
 268 {
 269         GObjectClass *object_class;
 270
 271         parent_class = g_type_class_peek_parent (class);
 272         object_class = (GObjectClass*) class;
 273         object_class->finalize = modest_formatter_finalize;
 274
 275         g_type_class_add_private (object_class, sizeof (ModestFormatterPrivate));
 276 }
 277
 278 GType
 279 modest_formatter_get_type (void)
 280 {
 281         static GType type = 0;
 282
 283         if (G_UNLIKELY(type == 0))
 284         {
 285                 static const GTypeInfo info =
 286                 {
 287                   sizeof (ModestFormatterClass),
 288                   NULL,   /* base_init */
 289                   NULL,   /* base_finalize */
 290                   (GClassInitFunc) modest_formatter_class_init,   /* class_init */
 291                   NULL,   /* class_finalize */
 292                   NULL,   /* class_data */
 293                   sizeof (ModestFormatter),
 294                   0,      /* n_preallocs */
 295                   modest_formatter_instance_init    /* instance_init */
 296                 };
 297
 298                 type = g_type_register_static (G_TYPE_OBJECT,
 299                         "ModestFormatter",
 300                         &info, 0);
 301         }
 302
 303         return type;
 304 }
 305
 306 /****************/
 307 static gchar *
 308 modest_formatter_wrapper_cite (ModestFormatter *self, const gchar *text, TnyHeader *header,
 309                                GList *attachments)
 310 {
 311         gchar *result, *from;
 312         ModestFormatterPrivate *priv = MODEST_FORMATTER_GET_PRIVATE (self);
 313
 314         from = tny_header_dup_from (header);
 315         result = modest_text_utils_cite (text,
 316                                          priv->content_type,
 317                                          priv->signature,
 318                                          from,
 319                                          tny_header_get_date_sent (header));
 320         g_free (from);
 321         return result;
 322 }
 323
 324 static gchar *
 325 modest_formatter_wrapper_inline (ModestFormatter *self, const gchar *text, TnyHeader *header,
 326                                  GList *attachments)
 327 {
 328         gchar *result, *from, *to, *subject;
 329         ModestFormatterPrivate *priv = MODEST_FORMATTER_GET_PRIVATE (self);
 330
 331         from = tny_header_dup_from (header);
 332         to = tny_header_dup_to (header);
 333         subject = tny_header_dup_subject (header);
 334         result =  modest_text_utils_inline (text,
 335                                             priv->content_type,
 336                                             priv->signature,
 337                                             from,
 338                                             tny_header_get_date_sent (header),
 339                                             to,
 340                                             subject);
 341         g_free (subject);
 342         g_free (to);
 343         g_free (from);
 344         return result;
 345 }
 346
 347 static gchar *
 348 modest_formatter_wrapper_quote (ModestFormatter *self, const gchar *text, TnyHeader *header,
 349                                 GList *attachments)
 350 {
 351         ModestFormatterPrivate *priv = MODEST_FORMATTER_GET_PRIVATE (self);
 352         GList *filenames = NULL;
 353         GList *node = NULL;
 354         gchar *result = NULL;
 355         gchar *from;
 356
 357         /* First we need a GList of attachments filenames */
 358         for (node = attachments; node != NULL; node = g_list_next (node)) {
 359                 TnyMimePart *part = (TnyMimePart *) node->data;
 360                 gchar *filename = NULL;
 361                 if (TNY_IS_MSG (part)) {
 362                         TnyHeader *header = tny_msg_get_header (TNY_MSG (part));
 363                         filename = tny_header_dup_subject (header);
 364                         if ((filename == NULL)||(filename[0] == '\0')) {
 365                                 g_free (filename);
 366                                 filename = g_strdup (_("mail_va_no_subject"));
 367                         }
 368                         g_object_unref (header);
 369                 } else {
 370                         filename = g_strdup (tny_mime_part_get_filename (part));
 371                         if ((filename == NULL)||(filename[0] == '\0')) {
 372                                 g_free (filename);
 373                                 filename = g_strdup ("");
 374                         }
 375                 }
 376                 filenames = g_list_prepend (filenames, filename);
 377         }
 378
 379         /* TODO: get 80 from the configuration */
 380         from = tny_header_dup_from (header);
 381         result = modest_text_utils_quote (text,
 382                                           priv->content_type,
 383                                           priv->signature,
 384                                           from,
 385                                           tny_header_get_date_sent (header),
 386                                           filenames,
 387                                           80);
 388         g_free (from);
 389
 390         g_list_foreach (filenames, (GFunc) g_free, NULL);
 391         g_list_free (filenames);
 392         return result;
 393 }
 394
 395 TnyMsg *
 396 modest_formatter_create_message (ModestFormatter *self, gboolean single_body,
 397                                  gboolean has_attachments, gboolean has_images)
 398 {
 399         TnyMsg *result = NULL;
 400         TnyPlatformFactory *fact = NULL;
 401         TnyMimePart *body_mime_part = NULL;
 402         TnyMimePart *related_mime_part = NULL;
 403
 404         fact    = modest_runtime_get_platform_factory ();
 405         result = tny_platform_factory_new_msg (fact);
 406         if (has_attachments) {
 407                 tny_mime_part_set_content_type (TNY_MIME_PART (result), "multipart/mixed");
 408                 if (has_images) {
 409                         related_mime_part = tny_platform_factory_new_mime_part (fact);
 410                         tny_mime_part_set_content_type (related_mime_part, "multipart/related");
 411                         tny_mime_part_add_part (TNY_MIME_PART (result), related_mime_part);
 412                 } else {
 413                         related_mime_part = g_object_ref (result);
 414                 }
 415
 416                 if (!single_body) {
 417                         body_mime_part = tny_platform_factory_new_mime_part (fact);
 418                         tny_mime_part_set_content_type (body_mime_part, "multipart/alternative");
 419                         tny_mime_part_add_part (TNY_MIME_PART (related_mime_part), body_mime_part);
 420                         g_object_unref (body_mime_part);
 421                 }
 422
 423                 g_object_unref (related_mime_part);
 424         } else if (has_images) {
 425                 tny_mime_part_set_content_type (TNY_MIME_PART (result), "multipart/related");
 426
 427                 if (!single_body) {
 428                         body_mime_part = tny_platform_factory_new_mime_part (fact);
 429                         tny_mime_part_set_content_type (body_mime_part, "multipart/alternative");
 430                         tny_mime_part_add_part (TNY_MIME_PART (result), body_mime_part);
 431                         g_object_unref (body_mime_part);
 432                 }
 433
 434         } else if (!single_body) {
 435                 tny_mime_part_set_content_type (TNY_MIME_PART (result), "multipart/alternative");
 436         }
 437
 438         return result;
 439 }
 440
 441 TnyMimePart *
 442 find_body_parent (TnyMimePart *part)
 443 {
 444         const gchar *msg_content_type = NULL;
 445         msg_content_type = tny_mime_part_get_content_type (part);
 446
 447         if ((msg_content_type != NULL) &&
 448             (!g_strcasecmp (msg_content_type, "multipart/alternative")))
 449                 return g_object_ref (part);
 450         else if ((msg_content_type != NULL) &&
 451                  (g_str_has_prefix (msg_content_type, "multipart/"))) {
 452                 TnyIterator *iter = NULL;
 453                 TnyMimePart *alternative_part = NULL;
 454                 TnyMimePart *related_part = NULL;
 455                 TnyList *parts = TNY_LIST (tny_simple_list_new ());
 456                 tny_mime_part_get_parts (TNY_MIME_PART (part), parts);
 457                 iter = tny_list_create_iterator (parts);
 458
 459                 while (!tny_iterator_is_done (iter)) {
 460                         TnyMimePart *part = TNY_MIME_PART (tny_iterator_get_current (iter));
 461                         if (part && !g_strcasecmp(tny_mime_part_get_content_type (part), "multipart/alternative")) {
 462                                 alternative_part = part;
 463                                 break;
 464                         } else if (part && !g_strcasecmp (tny_mime_part_get_content_type (part), "multipart/related")) {
 465                                 related_part = part;
 466                                 break;
 467                         }
 468
 469                         if (part)
 470                                 g_object_unref (part);
 471
 472                         tny_iterator_next (iter);
 473                 }
 474                 g_object_unref (iter);
 475                 g_object_unref (parts);
 476                 if (related_part) {
 477                         TnyMimePart *result;
 478                         result = find_body_parent (related_part);
 479                         g_object_unref (related_part);
 480                         return result;
 481                 } else if (alternative_part)
 482                         return alternative_part;
 483                 else
 484                         return g_object_ref (part);
 485         } else
 486                 return NULL;
 487 }
 488
 489 TnyMimePart *
 490 modest_formatter_create_body_part (ModestFormatter *self, TnyMsg *msg)
 491 {
 492         TnyMimePart *result = NULL;
 493         TnyPlatformFactory *fact = NULL;
 494         TnyMimePart *parent = NULL;
 495
 496         parent = find_body_parent (TNY_MIME_PART (msg));
 497         fact = modest_runtime_get_platform_factory ();
 498         if (parent != NULL) {
 499                 result = tny_platform_factory_new_mime_part (fact);
 500                 tny_mime_part_add_part (TNY_MIME_PART (parent), result);
 501                 g_object_unref (parent);
 502         } else {
 503                 result = g_object_ref (msg);
 504         }
 505
 506         return result;
 507
 508 }