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 #include <gdk/gdkx.h>
  31
  32 #include "common/claws.h"
  33 #include "common/version.h"
  34 #include "plugin.h"
  35 #include "file-utils.h"
  36 #include "utils.h"
  37 #include "mimeview.h"
  38 #include "addr_compl.h"
  39
  40 #include "dillo_prefs.h"
  41
  42 #define PLUGIN_NAME (_("Dillo HTML Viewer"))
  43
  44 typedef struct _DilloViewer DilloViewer;
  45
  46 struct _DilloViewer
  47 {
  48         MimeViewer       mimeviewer;
  49         GtkWidget       *widget;
  50         GtkWidget       *socket;
  51         gchar           *filename;
  52 };
  53
  54 static MimeViewerFactory dillo_viewer_factory;
  55
  56 static GtkWidget *dillo_get_widget(MimeViewer *_viewer)
  57 {
  58         DilloViewer *viewer = (DilloViewer *) _viewer;
  59
  60         debug_print("dillo_get_widget\n");
  61
  62         return GTK_WIDGET(viewer->widget);
  63 }
  64
  65 static gboolean socket_destroy_cb(GtkObject *object, gpointer data)
  66 {
  67         DilloViewer *viewer = (DilloViewer *) data;
  68         debug_print("Destroyed dillo socket %p\n", viewer->socket);
  69         viewer->socket = NULL;
  70         return FALSE;
  71 }
  72
  73 static gboolean load_images(DilloViewer *viewer)
  74 {
  75         MessageView *messageview = ((MimeViewer *)viewer)->mimeview
  76                                         ? ((MimeViewer *)viewer)->mimeview->messageview
  77                                         : NULL;
  78         MsgInfo *msginfo = NULL;
  79         gchar *ab_folderpath = NULL;
  80
  81         if (messageview == NULL)
  82                 return FALSE;
  83
  84         msginfo = messageview->msginfo;
  85
  86         if (msginfo == NULL)
  87                 return FALSE;
  88
  89         /* don't load remote images, period. */
  90         if (dillo_prefs.local)
  91                 return FALSE;
  92
  93         /* don't do whitelisting -> load images */
  94         if (!dillo_prefs.whitelist_ab)
  95                 return TRUE;
  96
  97         if (*dillo_prefs.whitelist_ab_folder != '\0' &&
  98             strcasecmp(dillo_prefs.whitelist_ab_folder, _("Any")) != 0)
  99                 ab_folderpath = dillo_prefs.whitelist_ab_folder;
 100
 101         start_address_completion(ab_folderpath);
 102
 103         /* do whitelisting -> check sender */
 104         if (found_in_addressbook(msginfo->from)) {
 105                 end_address_completion();
 106                 return TRUE;
 107         }
 108
 109         end_address_completion();
 110         return FALSE;
 111 }
 112
 113 static void dillo_show_mimepart(MimeViewer *_viewer,
 114                                 const gchar *infile,
 115                                 MimeInfo *partinfo)
 116 {
 117         DilloViewer *viewer = (DilloViewer *) _viewer;
 118         GdkWindow *gdkwin;
 119
 120         debug_print("dillo_show_mimepart\n");
 121
 122         if (viewer->filename != NULL) {
 123                 claws_unlink(viewer->filename);
 124                 g_free(viewer->filename);
 125         }
 126
 127         viewer->filename = procmime_get_tmp_file_name(partinfo);
 128
 129         if (!(procmime_get_part(viewer->filename, partinfo) < 0)) {
 130                 gchar *cmd;
 131
 132                 if (viewer->socket)
 133                         gtk_widget_destroy(viewer->socket);
 134                 viewer->socket = gtk_socket_new();
 135                 debug_print("Adding dillo socket %p", viewer->socket);
 136                 gtk_container_add(GTK_CONTAINER(viewer->widget),
 137                                   viewer->socket);
 138                 gtk_widget_realize(viewer->socket);
 139                 gtk_widget_show(viewer->socket);
 140                 g_signal_connect(G_OBJECT(viewer->socket), "destroy",
 141                                  G_CALLBACK(socket_destroy_cb), viewer);
 142
 143                 gdkwin = gtk_widget_get_window(viewer->socket);
 144                 cmd = g_strdup_printf("dillo %s%s-x %d \"%s\"",
 145                                       (!load_images(viewer) ? "-l " : ""),
 146                                       (dillo_prefs.full ? "-f " : ""),
 147                                       (gint) GDK_WINDOW_XWINDOW(gdkwin),
 148                                       viewer->filename);
 149
 150                 execute_command_line(cmd, TRUE, NULL);
 151                 g_free(cmd);
 152         }
 153 }
 154
 155 static void dillo_clear_viewer(MimeViewer *_viewer)
 156 {
 157         DilloViewer *viewer = (DilloViewer *) _viewer;
 158
 159         debug_print("dillo_clear_viewer\n");
 160         debug_print("Removing dillo socket %p\n", viewer->socket);
 161
 162         if (viewer->socket) {
 163                 gtk_widget_destroy(viewer->socket);
 164         }
 165 }
 166
 167 static void dillo_destroy_viewer(MimeViewer *_viewer)
 168 {
 169         DilloViewer *viewer = (DilloViewer *) _viewer;
 170
 171         debug_print("dillo_destroy_viewer\n");
 172
 173         if (viewer->socket) {
 174                 gtk_widget_destroy(viewer->socket);
 175         }
 176
 177         g_object_unref(GTK_WIDGET(viewer->widget));
 178         claws_unlink(viewer->filename);
 179         g_free(viewer->filename);
 180         g_free(viewer);
 181 }
 182
 183 static MimeViewer *dillo_viewer_create(void)
 184 {
 185         DilloViewer *viewer;
 186
 187         debug_print("dillo_viewer_create\n");
 188
 189         viewer = g_new0(DilloViewer, 1);
 190         viewer->mimeviewer.factory = &dillo_viewer_factory;
 191         viewer->mimeviewer.get_widget = dillo_get_widget;
 192         viewer->mimeviewer.show_mimepart = dillo_show_mimepart;
 193         viewer->mimeviewer.clear_viewer = dillo_clear_viewer;
 194         viewer->mimeviewer.destroy_viewer = dillo_destroy_viewer;
 195         viewer->mimeviewer.get_selection = NULL;
 196         viewer->widget = gtk_event_box_new();
 197
 198         gtk_widget_show(viewer->widget);
 199         g_object_ref(viewer->widget);
 200
 201         viewer->filename = NULL;
 202
 203         return (MimeViewer *) viewer;
 204 }
 205
 206 static gchar *content_types[] =
 207         {"text/html", NULL};
 208
 209 static MimeViewerFactory dillo_viewer_factory =
 210 {
 211         content_types,
 212         0,
 213
 214         dillo_viewer_create,
 215 };
 216
 217 gint plugin_init(gchar **error)
 218 {
 219         gchar *dillo_path = NULL;
 220         if (!check_plugin_version(MAKE_NUMERIC_VERSION(2,9,2,72),
 221                                 VERSION_NUMERIC, PLUGIN_NAME, error))
 222                 return -1;
 223
 224         if ((dillo_path = g_find_program_in_path("dillo")) == NULL) {
 225                 *error = g_strdup(_("Can't find the dillo executable in PATH. Is it installed?"));
 226                 return -1;
 227         }
 228         g_free(dillo_path);
 229
 230         dillo_prefs_init();
 231
 232         mimeview_register_viewer_factory(&dillo_viewer_factory);
 233
 234         return 0;
 235 }
 236
 237 gboolean plugin_done(void)
 238 {
 239         mimeview_unregister_viewer_factory(&dillo_viewer_factory);
 240
 241         dillo_prefs_done();
 242         return TRUE;
 243 }
 244
 245 const gchar *plugin_name(void)
 246 {
 247         return PLUGIN_NAME;
 248 }
 249
 250 const gchar *plugin_desc(void)
 251 {
 252         return _("This plugin renders HTML mail using the Dillo "
 253                 "web browser.\n"
 254                 "\n"
 255                 "Options can be found in /Configuration/Preferences/Plugins/Dillo Browser");
 256 }
 257
 258 const gchar *plugin_type(void)
 259 {
 260         return "GTK2";
 261 }
 262
 263 const gchar *plugin_licence(void)
 264 {
 265         return "GPL3+";
 266 }
 267
 268 const gchar *plugin_version(void)
 269 {
 270         return VERSION;
 271 }
 272
 273 struct PluginFeature *plugin_provides(void)
 274 {
 275         static struct PluginFeature features[] =
 276                 { {PLUGIN_MIMEVIEWER, "text/html"},
 277                   {PLUGIN_NOTHING, NULL}};
 278         return features;
 279 }