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 <tny-camel-html-to-text-stream.h>
  37 #include "modest-formatter.h"
  38 #include "modest-text-utils.h"
  39 #include "modest-tny-platform-factory.h"
  40 #include <modest-runtime.h>
  41
  42 #define MAX_BODY_LENGTH 4096
  43
  44 typedef struct _ModestFormatterPrivate ModestFormatterPrivate;
  45 struct _ModestFormatterPrivate {
  46         gchar *content_type;
  47         gchar *signature;
  48 };
  49 #define MODEST_FORMATTER_GET_PRIVATE(o)  (G_TYPE_INSTANCE_GET_PRIVATE((o), \
  50                                           MODEST_TYPE_FORMATTER, \
  51                                           ModestFormatterPrivate))
  52
  53 static GObjectClass *parent_class = NULL;
  54
  55 typedef gchar* FormatterFunc (ModestFormatter *self, const gchar *text, TnyHeader *header, GList *attachments);
  56
  57 static TnyMsg *modest_formatter_do (ModestFormatter *self, TnyMimePart *body,  TnyHeader *header,
  58                                     FormatterFunc func, GList *attachments);
  59
  60 static gchar*  modest_formatter_wrapper_cite   (ModestFormatter *self, const gchar *text,
  61                                                 TnyHeader *header, GList *attachments);
  62 static gchar*  modest_formatter_wrapper_quote  (ModestFormatter *self, const gchar *text,
  63                                                 TnyHeader *header, GList *attachments);
  64 static gchar*  modest_formatter_wrapper_inline (ModestFormatter *self, const gchar *text,
  65                                                 TnyHeader *header, GList *attachments);
  66
  67 static TnyMimePart *find_body_parent (TnyMimePart *part);
  68
  69 static gchar *
  70 extract_text (ModestFormatter *self, TnyMimePart *body)
  71 {
  72         TnyStream *mp_stream;
  73         TnyStream *stream;
  74         TnyStream *input_stream;
  75         GtkTextBuffer *buf;
  76         GtkTextIter start, end;
  77         gchar *text;
  78         ModestFormatterPrivate *priv;
  79         gint total;
  80
  81         buf = gtk_text_buffer_new (NULL);
  82         stream = TNY_STREAM (tny_gtk_text_buffer_stream_new (buf));
  83         tny_stream_reset (stream);
  84         mp_stream = tny_mime_part_get_decoded_stream (body);
  85
  86         if (g_strcmp0 (tny_mime_part_get_content_type (body), "text/html") == 0) {
  87                 input_stream = tny_camel_html_to_text_stream_new (mp_stream);
  88         } else {
  89                 input_stream = g_object_ref (mp_stream);
  90         }
  91
  92         total = 0;
  93
  94         while (!tny_stream_is_eos (input_stream)) {
  95                 gchar buffer [128];
  96                 gint n_read;
  97                 gint next_read;
  98
  99                 next_read = MIN (128, MAX_BODY_LENGTH - total);
 100                 if (next_read == 0)
 101                         break;
 102                 n_read = tny_stream_read (input_stream, buffer, next_read);
 103                 if (n_read > 0) {
 104                         gint n_write;
 105                         n_write = tny_stream_write (stream, buffer, n_read);
 106                         total += n_write;
 107                 } else if (n_read == -1) {
 108                         break;
 109                 }
 110         }
 111
 112         tny_stream_reset (stream);
 113
 114         g_object_unref (G_OBJECT(stream));
 115         g_object_unref (G_OBJECT (mp_stream));
 116         g_object_unref (G_OBJECT (input_stream));
 117
 118         gtk_text_buffer_get_bounds (buf, &start, &end);
 119         text = gtk_text_buffer_get_text (buf, &start, &end, FALSE);
 120         g_object_unref (G_OBJECT(buf));
 121
 122         /* Convert to desired content type if needed */
 123         priv = MODEST_FORMATTER_GET_PRIVATE (self);
 124
 125         return text;
 126 }
 127
 128 static void
 129 construct_from_text (TnyMimePart *part,
 130                      const gchar *text,
 131                      const gchar *content_type)
 132 {
 133         TnyStream *text_body_stream;
 134
 135         /* Create the stream */
 136         text_body_stream = TNY_STREAM (tny_camel_mem_stream_new_with_buffer
 137                                         (text, strlen(text)));
 138
 139         /* Construct MIME part */
 140         tny_stream_reset (text_body_stream);
 141         tny_mime_part_construct (part, text_body_stream, content_type, "7bit");
 142         tny_stream_reset (text_body_stream);
 143
 144         /* Clean */
 145         g_object_unref (G_OBJECT (text_body_stream));
 146 }
 147
 148 static TnyMsg *
 149 modest_formatter_do (ModestFormatter *self, TnyMimePart *body, TnyHeader *header, FormatterFunc func,
 150                      GList *attachments)
 151 {
 152         TnyMsg *new_msg = NULL;
 153         gchar *body_text = NULL, *txt = NULL;
 154         ModestFormatterPrivate *priv;
 155         TnyMimePart *body_part = NULL;
 156
 157         g_return_val_if_fail (self, NULL);
 158         g_return_val_if_fail (header, NULL);
 159         g_return_val_if_fail (func, NULL);
 160
 161         /* Build new part */
 162         new_msg = modest_formatter_create_message (self, TRUE, attachments != NULL, FALSE);
 163         body_part = modest_formatter_create_body_part (self, new_msg);
 164
 165         if (body)
 166                 body_text = extract_text (self, body);
 167         else
 168                 body_text = g_strdup ("");
 169
 170         txt = (gchar *) func (self, (const gchar*) body_text, header, attachments);
 171         priv = MODEST_FORMATTER_GET_PRIVATE (self);
 172         construct_from_text (TNY_MIME_PART (body_part), (const gchar*) txt, priv->content_type);
 173         g_object_unref (body_part);
 174
 175         /* Clean */
 176         g_free (body_text);
 177         g_free (txt);
 178
 179         return new_msg;
 180 }
 181
 182 TnyMsg *
 183 modest_formatter_cite (ModestFormatter *self, TnyMimePart *body, TnyHeader *header)
 184 {
 185         return modest_formatter_do (self, body, header, modest_formatter_wrapper_cite, NULL);
 186 }
 187
 188 TnyMsg *
 189 modest_formatter_quote (ModestFormatter *self, TnyMimePart *body, TnyHeader *header, GList *attachments)
 190 {
 191         return modest_formatter_do (self, body, header, modest_formatter_wrapper_quote, attachments);
 192 }
 193
 194 TnyMsg *
 195 modest_formatter_inline (ModestFormatter *self, TnyMimePart *body, TnyHeader *header, GList *attachments)
 196 {
 197         return modest_formatter_do (self, body, header, modest_formatter_wrapper_inline, attachments);
 198 }
 199
 200 TnyMsg *
 201 modest_formatter_attach (ModestFormatter *self, TnyMsg *msg, TnyHeader *header)
 202 {
 203         TnyMsg *new_msg = NULL;
 204         TnyMimePart *body_part = NULL;
 205         ModestFormatterPrivate *priv;
 206         gchar *txt;
 207
 208         /* Build new part */
 209         new_msg     = modest_formatter_create_message (self, TRUE, TRUE, FALSE);
 210         body_part = modest_formatter_create_body_part (self, new_msg);
 211
 212         /* Create the two parts */
 213         priv = MODEST_FORMATTER_GET_PRIVATE (self);
 214         txt = modest_text_utils_cite ("", priv->content_type, priv->signature,
 215                                       NULL, tny_header_get_date_sent (header));
 216         construct_from_text (body_part, txt, priv->content_type);
 217         g_free (txt);
 218         g_object_unref (body_part);
 219
 220         if (msg) {
 221                 /* Add parts */
 222                 tny_mime_part_add_part (TNY_MIME_PART (new_msg), TNY_MIME_PART (msg));
 223         }
 224
 225         return new_msg;
 226 }
 227
 228 ModestFormatter*
 229 modest_formatter_new (const gchar *content_type, const gchar *signature)
 230 {
 231         ModestFormatter *formatter;
 232         ModestFormatterPrivate *priv;
 233
 234         formatter = g_object_new (MODEST_TYPE_FORMATTER, NULL);
 235         priv = MODEST_FORMATTER_GET_PRIVATE (formatter);
 236         priv->content_type = g_strdup (content_type);
 237         priv->signature = g_strdup (signature);
 238
 239         return formatter;
 240 }
 241
 242 static void
 243 modest_formatter_instance_init (GTypeInstance *instance, gpointer g_class)
 244 {
 245         ModestFormatter *self = (ModestFormatter *)instance;
 246         ModestFormatterPrivate *priv = MODEST_FORMATTER_GET_PRIVATE (self);
 247
 248         priv->content_type = NULL;
 249         priv->signature = NULL;
 250 }
 251
 252 static void
 253 modest_formatter_finalize (GObject *object)
 254 {
 255         ModestFormatter *self = (ModestFormatter *)object;
 256         ModestFormatterPrivate *priv = MODEST_FORMATTER_GET_PRIVATE (self);
 257
 258         if (priv->content_type)
 259                 g_free (priv->content_type);
 260
 261         if (priv->signature)
 262                 g_free (priv->signature);
 263
 264         (*parent_class->finalize) (object);
 265 }
 266
 267 static void
 268 modest_formatter_class_init (ModestFormatterClass *class)
 269 {
 270         GObjectClass *object_class;
 271
 272         parent_class = g_type_class_peek_parent (class);
 273         object_class = (GObjectClass*) class;
 274         object_class->finalize = modest_formatter_finalize;
 275
 276         g_type_class_add_private (object_class, sizeof (ModestFormatterPrivate));
 277 }
 278
 279 GType
 280 modest_formatter_get_type (void)
 281 {
 282         static GType type = 0;
 283
 284         if (G_UNLIKELY(type == 0))
 285         {
 286                 static const GTypeInfo info =
 287                 {
 288                   sizeof (ModestFormatterClass),
 289                   NULL,   /* base_init */
 290                   NULL,   /* base_finalize */
 291                   (GClassInitFunc) modest_formatter_class_init,   /* class_init */
 292                   NULL,   /* class_finalize */
 293                   NULL,   /* class_data */
 294                   sizeof (ModestFormatter),
 295                   0,      /* n_preallocs */
 296                   modest_formatter_instance_init    /* instance_init */
 297                 };
 298
 299                 type = g_type_register_static (G_TYPE_OBJECT,
 300                         "ModestFormatter",
 301                         &info, 0);
 302         }
 303
 304         return type;
 305 }
 306
 307 /****************/
 308 static gchar *
 309 modest_formatter_wrapper_cite (ModestFormatter *self, const gchar *text, TnyHeader *header,
 310                                GList *attachments)
 311 {
 312         gchar *result, *from;
 313         ModestFormatterPrivate *priv = MODEST_FORMATTER_GET_PRIVATE (self);
 314
 315         from = tny_header_dup_from (header);
 316         result = modest_text_utils_cite (text,
 317                                          priv->content_type,
 318                                          priv->signature,
 319                                          from,
 320                                          tny_header_get_date_sent (header));
 321         g_free (from);
 322         return result;
 323 }
 324
 325 static gchar *
 326 modest_formatter_wrapper_inline (ModestFormatter *self, const gchar *text, TnyHeader *header,
 327                                  GList *attachments)
 328 {
 329         gchar *result, *from, *to, *subject;
 330         ModestFormatterPrivate *priv = MODEST_FORMATTER_GET_PRIVATE (self);
 331
 332         from = tny_header_dup_from (header);
 333         to = tny_header_dup_to (header);
 334         subject = tny_header_dup_subject (header);
 335         result =  modest_text_utils_inline (text,
 336                                             priv->content_type,
 337                                             priv->signature,
 338                                             from,
 339                                             tny_header_get_date_sent (header),
 340                                             to,
 341                                             subject);
 342         g_free (subject);
 343         g_free (to);
 344         g_free (from);
 345         return result;
 346 }
 347
 348 static gchar *
 349 modest_formatter_wrapper_quote (ModestFormatter *self, const gchar *text, TnyHeader *header,
 350                                 GList *attachments)
 351 {
 352         ModestFormatterPrivate *priv = MODEST_FORMATTER_GET_PRIVATE (self);
 353         GList *filenames = NULL;
 354         GList *node = NULL;
 355         gchar *result = NULL;
 356         gchar *from;
 357
 358         /* First we need a GList of attachments filenames */
 359         for (node = attachments; node != NULL; node = g_list_next (node)) {
 360                 TnyMimePart *part = (TnyMimePart *) node->data;
 361                 gchar *filename = NULL;
 362                 if (TNY_IS_MSG (part)) {
 363                         TnyHeader *header = tny_msg_get_header (TNY_MSG (part));
 364                         filename = tny_header_dup_subject (header);
 365                         if ((filename == NULL)||(filename[0] == '\0')) {
 366                                 g_free (filename);
 367                                 filename = g_strdup (_("mail_va_no_subject"));
 368                         }
 369                         g_object_unref (header);
 370                 } else {
 371                         filename = g_strdup (tny_mime_part_get_filename (part));
 372                         if ((filename == NULL)||(filename[0] == '\0')) {
 373                                 g_free (filename);
 374                                 filename = g_strdup ("");
 375                         }
 376                 }
 377                 filenames = g_list_prepend (filenames, filename);
 378         }
 379
 380         /* TODO: get 80 from the configuration */
 381         from = tny_header_dup_from (header);
 382         result = modest_text_utils_quote (text,
 383                                           priv->content_type,
 384                                           priv->signature,
 385                                           from,
 386                                           tny_header_get_date_sent (header),
 387                                           filenames,
 388                                           80);
 389         g_free (from);
 390
 391         g_list_foreach (filenames, (GFunc) g_free, NULL);
 392         g_list_free (filenames);
 393         return result;
 394 }
 395
 396 TnyMsg *
 397 modest_formatter_create_message (ModestFormatter *self, gboolean single_body,
 398                                  gboolean has_attachments, gboolean has_images)
 399 {
 400         TnyMsg *result = NULL;
 401         TnyPlatformFactory *fact = NULL;
 402         TnyMimePart *body_mime_part = NULL;
 403         TnyMimePart *related_mime_part = NULL;
 404
 405         fact    = modest_runtime_get_platform_factory ();
 406         result = tny_platform_factory_new_msg (fact);
 407         if (has_attachments) {
 408                 tny_mime_part_set_content_type (TNY_MIME_PART (result), "multipart/mixed");
 409                 if (has_images) {
 410                         related_mime_part = tny_platform_factory_new_mime_part (fact);
 411                         tny_mime_part_set_content_type (related_mime_part, "multipart/related");
 412                         tny_mime_part_add_part (TNY_MIME_PART (result), related_mime_part);
 413                 } else {
 414                         related_mime_part = g_object_ref (result);
 415                 }
 416
 417                 if (!single_body) {
 418                         body_mime_part = tny_platform_factory_new_mime_part (fact);
 419                         tny_mime_part_set_content_type (body_mime_part, "multipart/alternative");
 420                         tny_mime_part_add_part (TNY_MIME_PART (related_mime_part), body_mime_part);
 421                         g_object_unref (body_mime_part);
 422                 }
 423
 424                 g_object_unref (related_mime_part);
 425         } else if (has_images) {
 426                 tny_mime_part_set_content_type (TNY_MIME_PART (result), "multipart/related");
 427
 428                 if (!single_body) {
 429                         body_mime_part = tny_platform_factory_new_mime_part (fact);
 430                         tny_mime_part_set_content_type (body_mime_part, "multipart/alternative");
 431                         tny_mime_part_add_part (TNY_MIME_PART (result), body_mime_part);
 432                         g_object_unref (body_mime_part);
 433                 }
 434
 435         } else if (!single_body) {
 436                 tny_mime_part_set_content_type (TNY_MIME_PART (result), "multipart/alternative");
 437         }
 438
 439         return result;
 440 }
 441
 442 TnyMimePart *
 443 find_body_parent (TnyMimePart *part)
 444 {
 445         const gchar *msg_content_type = NULL;
 446         msg_content_type = tny_mime_part_get_content_type (part);
 447
 448         if ((msg_content_type != NULL) &&
 449             (!g_strcasecmp (msg_content_type, "multipart/alternative")))
 450                 return g_object_ref (part);
 451         else if ((msg_content_type != NULL) &&
 452                  (g_str_has_prefix (msg_content_type, "multipart/"))) {
 453                 TnyIterator *iter = NULL;
 454                 TnyMimePart *alternative_part = NULL;
 455                 TnyMimePart *related_part = NULL;
 456                 TnyList *parts = TNY_LIST (tny_simple_list_new ());
 457                 tny_mime_part_get_parts (TNY_MIME_PART (part), parts);
 458                 iter = tny_list_create_iterator (parts);
 459
 460                 while (!tny_iterator_is_done (iter)) {
 461                         TnyMimePart *part = TNY_MIME_PART (tny_iterator_get_current (iter));
 462                         if (part && !g_strcasecmp(tny_mime_part_get_content_type (part), "multipart/alternative")) {
 463                                 alternative_part = part;
 464                                 break;
 465                         } else if (part && !g_strcasecmp (tny_mime_part_get_content_type (part), "multipart/related")) {
 466                                 related_part = part;
 467                                 break;
 468                         }
 469
 470                         if (part)
 471                                 g_object_unref (part);
 472
 473                         tny_iterator_next (iter);
 474                 }
 475                 g_object_unref (iter);
 476                 g_object_unref (parts);
 477                 if (related_part) {
 478                         TnyMimePart *result;
 479                         result = find_body_parent (related_part);
 480                         g_object_unref (related_part);
 481                         return result;
 482                 } else if (alternative_part)
 483                         return alternative_part;
 484                 else
 485                         return g_object_ref (part);
 486         } else
 487                 return NULL;
 488 }
 489
 490 TnyMimePart *
 491 modest_formatter_create_body_part (ModestFormatter *self, TnyMsg *msg)
 492 {
 493         TnyMimePart *result = NULL;
 494         TnyPlatformFactory *fact = NULL;
 495         TnyMimePart *parent = NULL;
 496
 497         parent = find_body_parent (TNY_MIME_PART (msg));
 498         fact = modest_runtime_get_platform_factory ();
 499         if (parent != NULL) {
 500                 result = tny_platform_factory_new_mime_part (fact);
 501                 tny_mime_part_add_part (TNY_MIME_PART (parent), result);
 502                 g_object_unref (parent);
 503         } else {
 504                 result = g_object_ref (msg);
 505         }
 506
 507         return result;
 508
 509 }