toolkit/xre/nsNativeAppSupportUnix.cpp

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /* This Source Code Form is subject to the terms of the Mozilla Public
   3  * License, v. 2.0. If a copy of the MPL was not distributed with this
   4  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   5
   6 #include "nsNativeAppSupportBase.h"
   7 #include "nsCOMPtr.h"
   8 #include "nsXPCOM.h"
   9 #include "nsISupportsPrimitives.h"
  10 #include "nsIObserverService.h"
  11 #include "nsIAppStartup.h"
  12 #include "nsServiceManagerUtils.h"
  13 #include "prlink.h"
  14 #include "nsXREDirProvider.h"
  15 #include "nsReadableUtils.h"
  16
  17 #include "nsIFile.h"
  18 #include "nsDirectoryServiceDefs.h"
  19 #include "nsICommandLineRunner.h"
  20 #include "nsIWindowMediator.h"
  21 #include "nsPIDOMWindow.h"
  22 #include "nsIDocShell.h"
  23 #include "nsIBaseWindow.h"
  24 #include "nsIWidget.h"
  25 #include "nsIWritablePropertyBag2.h"
  26 #include "nsIPrefService.h"
  27 #include "mozilla/Services.h"
  28
  29 #include <stdlib.h>
  30 #include <glib.h>
  31 #include <glib-object.h>
  32 #include <gtk/gtk.h>
  33
  34 #ifdef MOZ_X11
  35 #include <gdk/gdkx.h>
  36 #include <X11/Xatom.h>
  37 #endif
  38
  39 #ifdef MOZ_ENABLE_DBUS
  40 #include <dbus/dbus.h>
  41 #endif
  42
  43 #define MIN_GTK_MAJOR_VERSION 2
  44 #define MIN_GTK_MINOR_VERSION 10
  45 #define UNSUPPORTED_GTK_MSG "We're sorry, this application requires a version of the GTK+ library that is not installed on your computer.\n\n\
  46 You have GTK+ %d.%d.\nThis application requires GTK+ %d.%d or newer.\n\n\
  47 Please upgrade your GTK+ library if you wish to use this application."
  48
  49 typedef struct _GnomeProgram GnomeProgram;
  50 typedef struct _GnomeModuleInfo GnomeModuleInfo;
  51 typedef struct _GnomeClient GnomeClient;
  52
  53 typedef enum {
  54   GNOME_SAVE_GLOBAL,
  55   GNOME_SAVE_LOCAL,
  56   GNOME_SAVE_BOTH
  57 } GnomeSaveStyle;
  58
  59 typedef enum {
  60   GNOME_INTERACT_NONE,
  61   GNOME_INTERACT_ERRORS,
  62   GNOME_INTERACT_ANY
  63 } GnomeInteractStyle;
  64
  65 typedef enum {
  66   GNOME_DIALOG_ERROR,
  67   GNOME_DIALOG_NORMAL
  68 } GnomeDialogType;
  69
  70 typedef GnomeProgram * (*_gnome_program_init_fn)(const char *, const char *,
  71                                                  const GnomeModuleInfo *, int,
  72                                                  char **, const char *, ...);
  73 typedef GnomeProgram * (*_gnome_program_get_fn)(void);
  74 typedef const GnomeModuleInfo * (*_libgnomeui_module_info_get_fn)();
  75 typedef GnomeClient * (*_gnome_master_client_fn)(void);
  76 typedef void (*_gnome_client_set_restart_command_fn)(GnomeClient*, gint, gchar*[]);
  77
  78 static _gnome_client_set_restart_command_fn gnome_client_set_restart_command;
  79
  80 gboolean save_yourself_cb(GnomeClient *client, gint phase,
  81                           GnomeSaveStyle style, gboolean shutdown,
  82                           GnomeInteractStyle interact, gboolean fast,
  83                           gpointer user_data)
  84 {
  85   nsCOMPtr<nsIObserverService> obsServ =
  86     mozilla::services::GetObserverService();
  87
  88   nsCOMPtr<nsISupportsPRBool> didSaveSession =
  89     do_CreateInstance(NS_SUPPORTS_PRBOOL_CONTRACTID);
  90
  91   if (!obsServ || !didSaveSession)
  92     return TRUE; // OOM
  93
  94   // Notify observers to save the session state
  95   didSaveSession->SetData(false);
  96   obsServ->NotifyObservers(didSaveSession, "session-save", nullptr);
  97
  98   bool status;
  99   didSaveSession->GetData(&status);
 100
 101   // If there was no session saved and the save_yourself request is
 102   // caused by upcoming shutdown we like to prepare for it
 103   if (!status && shutdown) {
 104     nsCOMPtr<nsISupportsPRBool> cancelQuit =
 105       do_CreateInstance(NS_SUPPORTS_PRBOOL_CONTRACTID);
 106
 107     cancelQuit->SetData(false);
 108     obsServ->NotifyObservers(cancelQuit, "quit-application-requested", nullptr);
 109
 110     bool abortQuit;
 111     cancelQuit->GetData(&abortQuit);
 112   }
 113
 114   return TRUE;
 115 }
 116
 117 void die_cb(GnomeClient *client, gpointer user_data)
 118 {
 119   nsCOMPtr<nsIAppStartup> appService =
 120     do_GetService("@mozilla.org/toolkit/app-startup;1");
 121
 122   if (appService)
 123     appService->Quit(nsIAppStartup::eForceQuit);
 124 }
 125
 126 class nsNativeAppSupportUnix : public nsNativeAppSupportBase
 127 {
 128 public:
 129   NS_IMETHOD Start(bool* aRetVal);
 130   NS_IMETHOD Stop(bool *aResult);
 131   NS_IMETHOD Enable();
 132
 133 private:
 134 };
 135
 136 NS_IMETHODIMP
 137 nsNativeAppSupportUnix::Start(bool *aRetVal)
 138 {
 139   NS_ASSERTION(gAppData, "gAppData must not be null.");
 140
 141 // The dbus library is used by both nsWifiScannerDBus and BluetoothDBusService,
 142 // from diffrent threads. This could lead to race conditions if the dbus is not
 143 // initialized before making any other library calls.
 144 #ifdef MOZ_ENABLE_DBUS
 145   dbus_threads_init_default();
 146 #endif
 147
 148 #if (MOZ_WIDGET_GTK == 2)
 149   if (gtk_major_version < MIN_GTK_MAJOR_VERSION ||
 150       (gtk_major_version == MIN_GTK_MAJOR_VERSION && gtk_minor_version < MIN_GTK_MINOR_VERSION)) {
 151     GtkWidget* versionErrDialog = gtk_message_dialog_new(nullptr,
 152                      GtkDialogFlags(GTK_DIALOG_MODAL |
 153                                     GTK_DIALOG_DESTROY_WITH_PARENT),
 154                      GTK_MESSAGE_ERROR,
 155                      GTK_BUTTONS_OK,
 156                      UNSUPPORTED_GTK_MSG,
 157                      gtk_major_version,
 158                      gtk_minor_version,
 159                      MIN_GTK_MAJOR_VERSION,
 160                      MIN_GTK_MINOR_VERSION);
 161     gtk_dialog_run(GTK_DIALOG(versionErrDialog));
 162     gtk_widget_destroy(versionErrDialog);
 163     exit(0);
 164   }
 165 #endif
 166
 167   *aRetVal = true;
 168
 169 #if defined(MOZ_X11) && (MOZ_WIDGET_GTK == 2)
 170
 171   PRLibrary *gnomeuiLib = PR_LoadLibrary("libgnomeui-2.so.0");
 172   if (!gnomeuiLib)
 173     return NS_OK;
 174
 175   PRLibrary *gnomeLib = PR_LoadLibrary("libgnome-2.so.0");
 176   if (!gnomeLib) {
 177     PR_UnloadLibrary(gnomeuiLib);
 178     return NS_OK;
 179   }
 180
 181   _gnome_program_init_fn gnome_program_init =
 182     (_gnome_program_init_fn)PR_FindFunctionSymbol(gnomeLib, "gnome_program_init");
 183   _gnome_program_get_fn gnome_program_get =
 184     (_gnome_program_get_fn)PR_FindFunctionSymbol(gnomeLib, "gnome_program_get");
 185  _libgnomeui_module_info_get_fn libgnomeui_module_info_get = (_libgnomeui_module_info_get_fn)PR_FindFunctionSymbol(gnomeuiLib, "libgnomeui_module_info_get");
 186   if (!gnome_program_init || !gnome_program_get || !libgnomeui_module_info_get) {
 187     PR_UnloadLibrary(gnomeuiLib);
 188     PR_UnloadLibrary(gnomeLib);
 189     return NS_OK;
 190   }
 191
 192 #endif /* MOZ_X11 && (MOZ_WIDGET_GTK == 2) */
 193
 194 #ifdef ACCESSIBILITY
 195   // We will load gail, atk-bridge by ourself later
 196   // We can't run atk-bridge init here, because gail get the control
 197   // Set GNOME_ACCESSIBILITY to 0 can avoid this
 198   static const char *accEnv = "GNOME_ACCESSIBILITY";
 199   const char *accOldValue = getenv(accEnv);
 200   setenv(accEnv, "0", 1);
 201 #endif
 202
 203 #if defined(MOZ_X11) && (MOZ_WIDGET_GTK == 2)
 204   if (!gnome_program_get()) {
 205     gnome_program_init("Gecko", "1.0", libgnomeui_module_info_get(),
 206                        gArgc, gArgv, nullptr);
 207   }
 208 #endif /* MOZ_X11 && (MOZ_WIDGET_GTK == 2) */
 209
 210 #ifdef ACCESSIBILITY
 211   if (accOldValue) {
 212     setenv(accEnv, accOldValue, 1);
 213   } else {
 214     unsetenv(accEnv);
 215   }
 216 #endif
 217
 218   // Careful! These libraries cannot be unloaded after this point because
 219   // gnome_program_init causes atexit handlers to be registered. Strange
 220   // crashes will occur if these libraries are unloaded.
 221
 222   // TODO GTK3 - see Bug 694570 - Stop using libgnome and libgnomeui on Linux
 223 #if defined(MOZ_X11) && (MOZ_WIDGET_GTK == 2)
 224   gnome_client_set_restart_command = (_gnome_client_set_restart_command_fn)
 225     PR_FindFunctionSymbol(gnomeuiLib, "gnome_client_set_restart_command");
 226
 227   _gnome_master_client_fn gnome_master_client = (_gnome_master_client_fn)
 228     PR_FindFunctionSymbol(gnomeuiLib, "gnome_master_client");
 229
 230   GnomeClient *client = gnome_master_client();
 231   g_signal_connect(client, "save-yourself", G_CALLBACK(save_yourself_cb), nullptr);
 232   g_signal_connect(client, "die", G_CALLBACK(die_cb), nullptr);
 233
 234   // Set the correct/requested restart command in any case.
 235
 236   // Is there a request to suppress default binary launcher?
 237   nsAutoCString path;
 238   char* argv1 = getenv("MOZ_APP_LAUNCHER");
 239
 240   if(!argv1) {
 241     // Tell the desktop the command for restarting us so that we can be part of XSMP session restore
 242     NS_ASSERTION(gDirServiceProvider, "gDirServiceProvider is NULL! This shouldn't happen!");
 243     nsCOMPtr<nsIFile> executablePath;
 244     nsresult rv;
 245
 246     bool dummy;
 247     rv = gDirServiceProvider->GetFile(XRE_EXECUTABLE_FILE, &dummy, getter_AddRefs(executablePath));
 248
 249     if (NS_SUCCEEDED(rv)) {
 250       // Strip off the -bin suffix to get the shell script we should run; this is what Breakpad does
 251       nsAutoCString leafName;
 252       rv = executablePath->GetNativeLeafName(leafName);
 253       if (NS_SUCCEEDED(rv) && StringEndsWith(leafName, NS_LITERAL_CSTRING("-bin"))) {
 254         leafName.SetLength(leafName.Length() - strlen("-bin"));
 255         executablePath->SetNativeLeafName(leafName);
 256       }
 257
 258       executablePath->GetNativePath(path);
 259       argv1 = (char*)(path.get());
 260     }
 261   }
 262
 263   if (argv1) {
 264     gnome_client_set_restart_command(client, 1, &argv1);
 265   }
 266 #endif /* MOZ_X11 && (MOZ_WIDGET_GTK == 2) */
 267
 268   return NS_OK;
 269 }
 270
 271 NS_IMETHODIMP
 272 nsNativeAppSupportUnix::Stop(bool *aResult)
 273 {
 274   NS_ENSURE_ARG(aResult);
 275   *aResult = true;
 276   return NS_OK;
 277 }
 278
 279 NS_IMETHODIMP
 280 nsNativeAppSupportUnix::Enable()
 281 {
 282   return NS_OK;
 283 }
 284
 285 nsresult
 286 NS_CreateNativeAppSupport(nsINativeAppSupport **aResult)
 287 {
 288   nsNativeAppSupportBase* native = new nsNativeAppSupportUnix();
 289   if (!native)
 290     return NS_ERROR_OUT_OF_MEMORY;
 291
 292   *aResult = native;
 293   NS_ADDREF(*aResult);
 294
 295   return NS_OK;
 296 }