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, *converted_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         if (strcmp (tny_mime_part_get_content_type (body), priv->content_type) == 0) {
 126                 if (!strcmp (priv->content_type, "text/html"))
 127                         converted_text = modest_text_utils_convert_to_html  (text);
 128                 else
 129                         converted_text = g_strdup (text);
 130
 131                 g_free (text);
 132                 text = converted_text;
 133         }
 134         return text;
 135 }
 136
 137 static void
 138 construct_from_text (TnyMimePart *part,
 139                      const gchar *text,
 140                      const gchar *content_type)
 141 {
 142         TnyStream *text_body_stream;
 143
 144         /* Create the stream */
 145         text_body_stream = TNY_STREAM (tny_camel_mem_stream_new_with_buffer
 146                                         (text, strlen(text)));
 147
 148         /* Construct MIME part */
 149         tny_stream_reset (text_body_stream);
 150         tny_mime_part_construct (part, text_body_stream, content_type, "7bit");
 151         tny_stream_reset (text_body_stream);
 152
 153         /* Clean */
 154         g_object_unref (G_OBJECT (text_body_stream));
 155 }
 156
 157 static TnyMsg *
 158 modest_formatter_do (ModestFormatter *self, TnyMimePart *body, TnyHeader *header, FormatterFunc func,
 159                      GList *attachments)
 160 {
 161         TnyMsg *new_msg = NULL;
 162         gchar *body_text = NULL, *txt = NULL;
 163         ModestFormatterPrivate *priv;
 164         TnyMimePart *body_part = NULL;
 165
 166         g_return_val_if_fail (self, NULL);
 167         g_return_val_if_fail (header, NULL);
 168         g_return_val_if_fail (func, NULL);
 169
 170         /* Build new part */
 171         new_msg = modest_formatter_create_message (self, TRUE, attachments != NULL, FALSE);
 172         body_part = modest_formatter_create_body_part (self, new_msg);
 173
 174         if (body)
 175                 body_text = extract_text (self, body);
 176         else
 177                 body_text = g_strdup ("");
 178
 179         txt = (gchar *) func (self, (const gchar*) body_text, header, attachments);
 180         priv = MODEST_FORMATTER_GET_PRIVATE (self);
 181         construct_from_text (TNY_MIME_PART (body_part), (const gchar*) txt, priv->content_type);
 182         g_object_unref (body_part);
 183
 184         /* Clean */
 185         g_free (body_text);
 186         g_free (txt);
 187
 188         return new_msg;
 189 }
 190
 191 TnyMsg *
 192 modest_formatter_cite (ModestFormatter *self, TnyMimePart *body, TnyHeader *header)
 193 {
 194         return modest_formatter_do (self, body, header, modest_formatter_wrapper_cite, NULL);
 195 }
 196
 197 TnyMsg *
 198 modest_formatter_quote (ModestFormatter *self, TnyMimePart *body, TnyHeader *header, GList *attachments)
 199 {
 200         return modest_formatter_do (self, body, header, modest_formatter_wrapper_quote, attachments);
 201 }
 202
 203 TnyMsg *
 204 modest_formatter_inline (ModestFormatter *self, TnyMimePart *body, TnyHeader *header, GList *attachments)
 205 {
 206         return modest_formatter_do (self, body, header, modest_formatter_wrapper_inline, attachments);
 207 }
 208
 209 TnyMsg *
 210 modest_formatter_attach (ModestFormatter *self, TnyMsg *msg, TnyHeader *header)
 211 {
 212         TnyMsg *new_msg = NULL;
 213         TnyMimePart *body_part = NULL;
 214         ModestFormatterPrivate *priv;
 215         gchar *txt;
 216
 217         /* Build new part */
 218         new_msg     = modest_formatter_create_message (self, TRUE, TRUE, FALSE);
 219         body_part = modest_formatter_create_body_part (self, new_msg);
 220
 221         /* Create the two parts */
 222         priv = MODEST_FORMATTER_GET_PRIVATE (self);
 223         txt = modest_text_utils_cite ("", priv->content_type, priv->signature,
 224                                       NULL, tny_header_get_date_sent (header));
 225         construct_from_text (body_part, txt, priv->content_type);
 226         g_free (txt);
 227         g_object_unref (body_part);
 228
 229         if (msg) {
 230                 /* Add parts */
 231                 tny_mime_part_add_part (TNY_MIME_PART (new_msg), TNY_MIME_PART (msg));
 232         }
 233
 234         return new_msg;
 235 }
 236
 237 ModestFormatter*
 238 modest_formatter_new (const gchar *content_type, const gchar *signature)
 239 {
 240         ModestFormatter *formatter;
 241         ModestFormatterPrivate *priv;
 242
 243         formatter = g_object_new (MODEST_TYPE_FORMATTER, NULL);
 244         priv = MODEST_FORMATTER_GET_PRIVATE (formatter);
 245         priv->content_type = g_strdup (content_type);
 246         priv->signature = g_strdup (signature);
 247
 248         return formatter;
 249 }
 250
 251 static void
 252 modest_formatter_instance_init (GTypeInstance *instance, gpointer g_class)
 253 {
 254         ModestFormatter *self = (ModestFormatter *)instance;
 255         ModestFormatterPrivate *priv = MODEST_FORMATTER_GET_PRIVATE (self);
 256
 257         priv->content_type = NULL;
 258         priv->signature = NULL;
 259 }
 260
 261 static void
 262 modest_formatter_finalize (GObject *object)
 263 {
 264         ModestFormatter *self = (ModestFormatter *)object;
 265         ModestFormatterPrivate *priv = MODEST_FORMATTER_GET_PRIVATE (self);
 266
 267         if (priv->content_type)
 268                 g_free (priv->content_type);
 269
 270         if (priv->signature)
 271                 g_free (priv->signature);
 272
 273         (*parent_class->finalize) (object);
 274 }
 275
 276 static void
 277 modest_formatter_class_init (ModestFormatterClass *class)
 278 {
 279         GObjectClass *object_class;
 280
 281         parent_class = g_type_class_peek_parent (class);
 282         object_class = (GObjectClass*) class;
 283         object_class->finalize = modest_formatter_finalize;
 284
 285         g_type_class_add_private (object_class, sizeof (ModestFormatterPrivate));
 286 }
 287
 288 GType
 289 modest_formatter_get_type (void)
 290 {
 291         static GType type = 0;
 292
 293         if (G_UNLIKELY(type == 0))
 294         {
 295                 static const GTypeInfo info =
 296                 {
 297                   sizeof (ModestFormatterClass),
 298                   NULL,   /* base_init */
 299                   NULL,   /* base_finalize */
 300                   (GClassInitFunc) modest_formatter_class_init,   /* class_init */
 301                   NULL,   /* class_finalize */
 302                   NULL,   /* class_data */
 303                   sizeof (ModestFormatter),
 304                   0,      /* n_preallocs */
 305                   modest_formatter_instance_init    /* instance_init */
 306                 };
 307
 308                 type = g_type_register_static (G_TYPE_OBJECT,
 309                         "ModestFormatter",
 310                         &info, 0);
 311         }
 312
 313         return type;
 314 }
 315
 316 /****************/
 317 static gchar *
 318 modest_formatter_wrapper_cite (ModestFormatter *self, const gchar *text, TnyHeader *header,
 319                                GList *attachments)
 320 {
 321         gchar *result, *from;
 322         ModestFormatterPrivate *priv = MODEST_FORMATTER_GET_PRIVATE (self);
 323
 324         from = tny_header_dup_from (header);
 325         result = modest_text_utils_cite (text,
 326                                          priv->content_type,
 327                                          priv->signature,
 328                                          from,
 329                                          tny_header_get_date_sent (header));
 330         g_free (from);
 331         return result;
 332 }
 333
 334 static gchar *
 335 modest_formatter_wrapper_inline (ModestFormatter *self, const gchar *text, TnyHeader *header,
 336                                  GList *attachments)
 337 {
 338         gchar *result, *from, *to, *subject;
 339         ModestFormatterPrivate *priv = MODEST_FORMATTER_GET_PRIVATE (self);
 340
 341         from = tny_header_dup_from (header);
 342         to = tny_header_dup_to (header);
 343         subject = tny_header_dup_subject (header);
 344         result =  modest_text_utils_inline (text,
 345                                             priv->content_type,
 346                                             priv->signature,
 347                                             from,
 348                                             tny_header_get_date_sent (header),
 349                                             to,
 350                                             subject);
 351         g_free (subject);
 352         g_free (to);
 353         g_free (from);
 354         return result;
 355 }
 356
 357 static gchar *
 358 modest_formatter_wrapper_quote (ModestFormatter *self, const gchar *text, TnyHeader *header,
 359                                 GList *attachments)
 360 {
 361         ModestFormatterPrivate *priv = MODEST_FORMATTER_GET_PRIVATE (self);
 362         GList *filenames = NULL;
 363         GList *node = NULL;
 364         gchar *result = NULL;
 365         gchar *from;
 366
 367         /* First we need a GList of attachments filenames */
 368         for (node = attachments; node != NULL; node = g_list_next (node)) {
 369                 TnyMimePart *part = (TnyMimePart *) node->data;
 370                 gchar *filename = NULL;
 371                 if (TNY_IS_MSG (part)) {
 372                         TnyHeader *header = tny_msg_get_header (TNY_MSG (part));
 373                         filename = tny_header_dup_subject (header);
 374                         if ((filename == NULL)||(filename[0] == '\0')) {
 375                                 g_free (filename);
 376                                 filename = g_strdup (_("mail_va_no_subject"));
 377                         }
 378                         g_object_unref (header);
 379                 } else {
 380                         filename = g_strdup (tny_mime_part_get_filename (part));
 381                         if ((filename == NULL)||(filename[0] == '\0')) {
 382                                 g_free (filename);
 383                                 filename = g_strdup ("");
 384                         }
 385                 }
 386                 filenames = g_list_prepend (filenames, filename);
 387         }
 388
 389         /* TODO: get 80 from the configuration */
 390         from = tny_header_dup_from (header);
 391         result = modest_text_utils_quote (text,
 392                                           priv->content_type,
 393                                           priv->signature,
 394                                           from,
 395                                           tny_header_get_date_sent (header),
 396                                           filenames,
 397                                           80);
 398         g_free (from);
 399
 400         g_list_foreach (filenames, (GFunc) g_free, NULL);
 401         g_list_free (filenames);
 402         return result;
 403 }
 404
 405 TnyMsg *
 406 modest_formatter_create_message (ModestFormatter *self, gboolean single_body,
 407                                  gboolean has_attachments, gboolean has_images)
 408 {
 409         TnyMsg *result = NULL;
 410         TnyPlatformFactory *fact = NULL;
 411         TnyMimePart *body_mime_part = NULL;
 412         TnyMimePart *related_mime_part = NULL;
 413
 414         fact    = modest_runtime_get_platform_factory ();
 415         result = tny_platform_factory_new_msg (fact);
 416         if (has_attachments) {
 417                 tny_mime_part_set_content_type (TNY_MIME_PART (result), "multipart/mixed");
 418                 if (has_images) {
 419                         related_mime_part = tny_platform_factory_new_mime_part (fact);
 420                         tny_mime_part_set_content_type (related_mime_part, "multipart/related");
 421                         tny_mime_part_add_part (TNY_MIME_PART (result), related_mime_part);
 422                 } else {
 423                         related_mime_part = g_object_ref (result);
 424                 }
 425
 426                 if (!single_body) {
 427                         body_mime_part = tny_platform_factory_new_mime_part (fact);
 428                         tny_mime_part_set_content_type (body_mime_part, "multipart/alternative");
 429                         tny_mime_part_add_part (TNY_MIME_PART (related_mime_part), body_mime_part);
 430                         g_object_unref (body_mime_part);
 431                 }
 432
 433                 g_object_unref (related_mime_part);
 434         } else if (has_images) {
 435                 tny_mime_part_set_content_type (TNY_MIME_PART (result), "multipart/related");
 436
 437                 if (!single_body) {
 438                         body_mime_part = tny_platform_factory_new_mime_part (fact);
 439                         tny_mime_part_set_content_type (body_mime_part, "multipart/alternative");
 440                         tny_mime_part_add_part (TNY_MIME_PART (result), body_mime_part);
 441                         g_object_unref (body_mime_part);
 442                 }
 443
 444         } else if (!single_body) {
 445                 tny_mime_part_set_content_type (TNY_MIME_PART (result), "multipart/alternative");
 446         }
 447
 448         return result;
 449 }
 450
 451 TnyMimePart *
 452 find_body_parent (TnyMimePart *part)
 453 {
 454         const gchar *msg_content_type = NULL;
 455         msg_content_type = tny_mime_part_get_content_type (part);
 456
 457         if ((msg_content_type != NULL) &&
 458             (!g_strcasecmp (msg_content_type, "multipart/alternative")))
 459                 return g_object_ref (part);
 460         else if ((msg_content_type != NULL) &&
 461                  (g_str_has_prefix (msg_content_type, "multipart/"))) {
 462                 TnyIterator *iter = NULL;
 463                 TnyMimePart *alternative_part = NULL;
 464                 TnyMimePart *related_part = NULL;
 465                 TnyList *parts = TNY_LIST (tny_simple_list_new ());
 466                 tny_mime_part_get_parts (TNY_MIME_PART (part), parts);
 467                 iter = tny_list_create_iterator (parts);
 468
 469                 while (!tny_iterator_is_done (iter)) {
 470                         TnyMimePart *part = TNY_MIME_PART (tny_iterator_get_current (iter));
 471                         if (part && !g_strcasecmp(tny_mime_part_get_content_type (part), "multipart/alternative")) {
 472                                 alternative_part = part;
 473                                 break;
 474                         } else if (part && !g_strcasecmp (tny_mime_part_get_content_type (part), "multipart/related")) {
 475                                 related_part = part;
 476                                 break;
 477                         }
 478
 479                         if (part)
 480                                 g_object_unref (part);
 481
 482                         tny_iterator_next (iter);
 483                 }
 484                 g_object_unref (iter);
 485                 g_object_unref (parts);
 486                 if (related_part) {
 487                         TnyMimePart *result;
 488                         result = find_body_parent (related_part);
 489                         g_object_unref (related_part);
 490                         return result;
 491                 } else if (alternative_part)
 492                         return alternative_part;
 493                 else
 494                         return g_object_ref (part);
 495         } else
 496                 return NULL;
 497 }
 498
 499 TnyMimePart *
 500 modest_formatter_create_body_part (ModestFormatter *self, TnyMsg *msg)
 501 {
 502         TnyMimePart *result = NULL;
 503         TnyPlatformFactory *fact = NULL;
 504         TnyMimePart *parent = NULL;
 505
 506         parent = find_body_parent (TNY_MIME_PART (msg));
 507         fact = modest_runtime_get_platform_factory ();
 508         if (parent != NULL) {
 509                 result = tny_platform_factory_new_mime_part (fact);
 510                 tny_mime_part_add_part (TNY_MIME_PART (parent), result);
 511                 g_object_unref (parent);
 512         } else {
 513                 result = g_object_ref (msg);
 514         }
 515
 516         return result;
 517
 518 }