src/plugins/dillo/dillo_viewer.c

   1 /*
   2  * Claws Mail -- a GTK+ based, lightweight, and fast e-mail client
   3  * Copyright (C) 1999-2012 the Claws Mail Team
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 3 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program. If not, see <http://www.gnu.org/licenses/>.
  17  *
  18  */
  19
  20 #ifdef HAVE_CONFIG_H
  21 #  include "config.h"
  22 #include "claws-features.h"
  23 #endif
  24
  25 #include <unistd.h>
  26
  27 #include <glib.h>
  28 #include <glib/gi18n.h>
  29 #include <gtk/gtk.h>
  30 #if GTK_CHECK_VERSION(3, 0, 0)
  31 #include <gtk/gtkx.h>
  32 #endif
  33 #include <gdk/gdkx.h>
  34
  35 #include "common/claws.h"
  36 #include "common/version.h"
  37 #include "plugin.h"
  38 #include "utils.h"
  39 #include "mimeview.h"
  40 #include "addr_compl.h"
  41
  42 #include "dillo_prefs.h"
  43
  44 #define PLUGIN_NAME (_("Dillo HTML Viewer"))
  45
  46 typedef struct _DilloViewer DilloViewer;
  47
  48 struct _DilloViewer
  49 {
  50         MimeViewer       mimeviewer;
  51         GtkWidget       *widget;
  52         GtkWidget       *socket;
  53         gchar           *filename;
  54 };
  55
  56 static MimeViewerFactory dillo_viewer_factory;
  57
  58 static GtkWidget *dillo_get_widget(MimeViewer *_viewer)
  59 {
  60         DilloViewer *viewer = (DilloViewer *) _viewer;
  61
  62         debug_print("dillo_get_widget\n");
  63
  64         return GTK_WIDGET(viewer->widget);
  65 }
  66
  67 #if !GTK_CHECK_VERSION(3, 0, 0)
  68 static gboolean socket_destroy_cb(GtkObject *object, gpointer data)
  69 #else
  70 static gboolean socket_destroy_cb(GtkObject *object, gpointer data)
  71 #endif
  72 {
  73         DilloViewer *viewer = (DilloViewer *) data;
  74         debug_print("Destroyed dillo socket %p\n", viewer->socket);
  75         viewer->socket = NULL;
  76         return FALSE;
  77 }
  78
  79 static gboolean load_images(DilloViewer *viewer)
  80 {
  81         MessageView *messageview = ((MimeViewer *)viewer)->mimeview
  82                                         ? ((MimeViewer *)viewer)->mimeview->messageview
  83                                         : NULL;
  84         MsgInfo *msginfo = NULL;
  85         gchar *ab_folderpath = NULL;
  86
  87         if (messageview == NULL)
  88                 return FALSE;
  89
  90         msginfo = messageview->msginfo;
  91
  92         if (msginfo == NULL)
  93                 return FALSE;
  94
  95         /* don't load remote images, period. */
  96         if (dillo_prefs.local)
  97                 return FALSE;
  98
  99         /* don't do whitelisting -> load images */
 100         if (!dillo_prefs.whitelist_ab)
 101                 return TRUE;
 102
 103         if (*dillo_prefs.whitelist_ab_folder != '\0' &&
 104             strcasecmp(dillo_prefs.whitelist_ab_folder, _("Any")) != 0)
 105                 ab_folderpath = dillo_prefs.whitelist_ab_folder;
 106
 107         start_address_completion(ab_folderpath);
 108
 109         /* do whitelisting -> check sender */
 110         if (found_in_addressbook(msginfo->from)) {
 111                 end_address_completion();
 112                 return TRUE;
 113         }
 114
 115         end_address_completion();
 116         return FALSE;
 117 }
 118
 119 static void dillo_show_mimepart(MimeViewer *_viewer,
 120                                 const gchar *infile,
 121                                 MimeInfo *partinfo)
 122 {
 123         DilloViewer *viewer = (DilloViewer *) _viewer;
 124         GdkWindow *gdkwin;
 125
 126         debug_print("dillo_show_mimepart\n");
 127
 128         if (viewer->filename != NULL) {
 129                 claws_unlink(viewer->filename);
 130                 g_free(viewer->filename);
 131         }
 132
 133         viewer->filename = procmime_get_tmp_file_name(partinfo);
 134
 135         if (!(procmime_get_part(viewer->filename, partinfo) < 0)) {
 136                 gchar *cmd;
 137
 138                 if (viewer->socket)
 139                         gtk_widget_destroy(viewer->socket);
 140                 viewer->socket = gtk_socket_new();
 141                 debug_print("Adding dillo socket %p", viewer->socket);
 142                 gtk_container_add(GTK_CONTAINER(viewer->widget),
 143                                   viewer->socket);
 144                 gtk_widget_realize(viewer->socket);
 145                 gtk_widget_show(viewer->socket);
 146                 g_signal_connect(G_OBJECT(viewer->socket), "destroy",
 147                                  G_CALLBACK(socket_destroy_cb), viewer);
 148
 149                 gdkwin = gtk_widget_get_window(viewer->socket);
 150                 cmd = g_strdup_printf("dillo %s%s-x %d \"%s\"",
 151                                       (!load_images(viewer) ? "-l " : ""),
 152                                       (dillo_prefs.full ? "-f " : ""),
 153                                       (gint) GDK_WINDOW_XWINDOW(gdkwin),
 154                                       viewer->filename);
 155
 156                 execute_command_line(cmd, TRUE, NULL);
 157                 g_free(cmd);
 158         }
 159 }
 160
 161 static void dillo_clear_viewer(MimeViewer *_viewer)
 162 {
 163         DilloViewer *viewer = (DilloViewer *) _viewer;
 164
 165         debug_print("dillo_clear_viewer\n");
 166         debug_print("Removing dillo socket %p\n", viewer->socket);
 167
 168         if (viewer->socket) {
 169                 gtk_widget_destroy(viewer->socket);
 170         }
 171 }
 172
 173 static void dillo_destroy_viewer(MimeViewer *_viewer)
 174 {
 175         DilloViewer *viewer = (DilloViewer *) _viewer;
 176
 177         debug_print("dillo_destroy_viewer\n");
 178
 179         if (viewer->socket) {
 180                 gtk_widget_destroy(viewer->socket);
 181         }
 182
 183         g_object_unref(GTK_WIDGET(viewer->widget));
 184         claws_unlink(viewer->filename);
 185         g_free(viewer->filename);
 186         g_free(viewer);
 187 }
 188
 189 static MimeViewer *dillo_viewer_create(void)
 190 {
 191         DilloViewer *viewer;
 192
 193         debug_print("dillo_viewer_create\n");
 194
 195         viewer = g_new0(DilloViewer, 1);
 196         viewer->mimeviewer.factory = &dillo_viewer_factory;
 197         viewer->mimeviewer.get_widget = dillo_get_widget;
 198         viewer->mimeviewer.show_mimepart = dillo_show_mimepart;
 199         viewer->mimeviewer.clear_viewer = dillo_clear_viewer;
 200         viewer->mimeviewer.destroy_viewer = dillo_destroy_viewer;
 201         viewer->mimeviewer.get_selection = NULL;
 202         viewer->widget = gtk_event_box_new();
 203
 204         gtk_widget_show(viewer->widget);
 205         g_object_ref(viewer->widget);
 206
 207         viewer->filename = NULL;
 208
 209         return (MimeViewer *) viewer;
 210 }
 211
 212 static gchar *content_types[] =
 213         {"text/html", NULL};
 214
 215 static MimeViewerFactory dillo_viewer_factory =
 216 {
 217         content_types,
 218         0,
 219
 220         dillo_viewer_create,
 221 };
 222
 223 gint plugin_init(gchar **error)
 224 {
 225         gchar *dillo_path = NULL;
 226         if (!check_plugin_version(MAKE_NUMERIC_VERSION(2,9,2,72),
 227                                 VERSION_NUMERIC, PLUGIN_NAME, error))
 228                 return -1;
 229
 230         if ((dillo_path = g_find_program_in_path("dillo")) == NULL) {
 231                 *error = g_strdup(_("Can't find the dillo executable in PATH. Is it installed?"));
 232                 return -1;
 233         }
 234         g_free(dillo_path);
 235
 236         dillo_prefs_init();
 237
 238         mimeview_register_viewer_factory(&dillo_viewer_factory);
 239
 240         return 0;
 241 }
 242
 243 gboolean plugin_done(void)
 244 {
 245         mimeview_unregister_viewer_factory(&dillo_viewer_factory);
 246
 247         dillo_prefs_done();
 248         return TRUE;
 249 }
 250
 251 const gchar *plugin_name(void)
 252 {
 253         return PLUGIN_NAME;
 254 }
 255
 256 const gchar *plugin_desc(void)
 257 {
 258         return _("This plugin renders HTML mail using the Dillo "
 259                 "web browser.\n"
 260                 "\n"
 261                 "Options can be found in /Configuration/Preferences/Plugins/Dillo Browser");
 262 }
 263
 264 const gchar *plugin_type(void)
 265 {
 266         return "GTK2";
 267 }
 268
 269 const gchar *plugin_licence(void)
 270 {
 271         return "GPL3+";
 272 }
 273
 274 const gchar *plugin_version(void)
 275 {
 276         return VERSION;
 277 }
 278
 279 struct PluginFeature *plugin_provides(void)
 280 {
 281         static struct PluginFeature features[] =
 282                 { {PLUGIN_MIMEVIEWER, "text/html"},
 283                   {PLUGIN_NOTHING, NULL}};
 284         return features;
 285 }