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https://github.com/mozilla/gecko-dev.git
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Bug 154238; tweak http\shell\open\ddeexec registry keys while running so that Acrobat plugin can converse with us via DDE; r=blythe@netscape.com, sr=ben@netscape.com
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law%netscape.com
parent
2535e0ad3e
commit
e657c80b7e
@ -742,3 +742,10 @@ pref("plugin.expose_full_path", false); // if true navigator.plugins reveals ful
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// See bug 136985. Gives embedders a pref to hook into to show
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// a popup blocker if they choose.
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pref("browser.popups.showPopupBlocker", true);
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// Pref to control whether we set ddeexec subkeys for the http
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// Internet shortcut protocol if we are handling it. These
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// subkeys will be set only while we are running (to avoid the
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// problem of Windows showing an alert when it tries to use DDE
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// and we're not already running).
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pref("advanced.system.supportDDEExec", true);
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@ -400,6 +400,7 @@ private:
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static char *mAppName;
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static nsIDOMWindow *mInitialWindow;
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static PRBool mForceProfileStartup;
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static PRBool mSupportingDDEExec;
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static char mMutexName[];
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friend struct MessageWindow;
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}; // nsNativeAppSupportWin
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@ -739,6 +740,7 @@ HSZ nsNativeAppSupportWin::mTopics[nsNativeAppSupportWin::topicCount] = { 0 };
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DWORD nsNativeAppSupportWin::mInstance = 0;
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nsIDOMWindow* nsNativeAppSupportWin::mInitialWindow = nsnull;
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PRBool nsNativeAppSupportWin::mForceProfileStartup = PR_FALSE;
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PRBool nsNativeAppSupportWin::mSupportingDDEExec = PR_FALSE;
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NOTIFYICONDATA nsNativeAppSupportWin::mIconData = { sizeof(NOTIFYICONDATA),
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0,
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@ -1054,6 +1056,73 @@ nsNativeAppSupportWin::FindTopic( HSZ topic ) {
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return -1;
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}
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// Utility function that determines if we're handling http Internet shortcuts.
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static PRBool handlingHTTP() {
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PRBool result = PR_FALSE;
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nsCOMPtr<nsIPref> prefService( do_GetService( NS_PREF_CONTRACTID ) );
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if ( prefService ) {
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prefService->GetBoolPref( "advanced.system.supportDDEExec", &result );
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}
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if ( result ) {
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result = PR_FALSE; // Answer no if an error occurs.
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// See if we're the "default browser" (i.e., handling http Internet shortcuts)
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nsCOMPtr<nsIWindowsHooks> winhooks( do_GetService( NS_IWINDOWSHOOKS_CONTRACTID ) );
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if ( winhooks ) {
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nsCOMPtr<nsIWindowsHooksSettings> settings;
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nsresult rv = winhooks->GetSettings( getter_AddRefs( settings ) );
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if ( NS_SUCCEEDED( rv ) ) {
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settings->GetIsHandlingHTTP( &result );
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}
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}
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}
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return result;
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}
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// Utility function to delete a registry subkey.
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static DWORD deleteKey( HKEY baseKey, const char *keyName ) {
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// Make sure input subkey isn't null.
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DWORD rc;
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if ( keyName && ::strlen(keyName) ) {
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// Open subkey.
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HKEY key;
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rc = ::RegOpenKeyEx( baseKey,
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keyName,
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0,
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KEY_ENUMERATE_SUB_KEYS | DELETE,
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&key );
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// Continue till we get an error or are done.
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while ( rc == ERROR_SUCCESS ) {
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char subkeyName[_MAX_PATH];
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DWORD len = sizeof subkeyName;
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// Get first subkey name. Note that we always get the
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// first one, then delete it. So we need to get
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// the first one next time, also.
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rc = ::RegEnumKeyEx( key,
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0,
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subkeyName,
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&len,
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0,
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0,
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0,
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0 );
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if ( rc == ERROR_NO_MORE_ITEMS ) {
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// No more subkeys. Delete the main one.
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rc = ::RegDeleteKey( baseKey, keyName );
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break;
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} else if ( rc == ERROR_SUCCESS ) {
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// Another subkey, delete it, recursively.
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rc = deleteKey( key, subkeyName );
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}
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}
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// Close the key we opened.
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::RegCloseKey( key );
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} else {
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rc = ERROR_BADKEY;
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}
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return rc;
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}
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// Start DDE server.
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//
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// This used to be the Start() method when we were using DDE as the
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@ -1115,7 +1184,6 @@ nsNativeAppSupportWin::Stop( PRBool *aResult ) {
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*aResult = PR_TRUE;
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}
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return rv;
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}
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@ -1123,6 +1191,15 @@ nsNativeAppSupportWin::Stop( PRBool *aResult ) {
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NS_IMETHODIMP
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nsNativeAppSupportWin::Quit() {
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if ( mInstance ) {
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// Undo registry setting if we need to.
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if ( mSupportingDDEExec && handlingHTTP() ) {
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mSupportingDDEExec = PR_FALSE;
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#if MOZ_DEBUG_DDE
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printf( "Deleting ddexec subkey on exit\n" );
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#endif
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deleteKey( HKEY_CLASSES_ROOT, "http\\shell\\open\\ddeexec" );
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}
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// Unregister application name.
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DdeNameService( mInstance, mApplication, 0, DNS_UNREGISTER );
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// Clean up strings.
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@ -1377,7 +1454,7 @@ nsNativeAppSupportWin::HandleDDENotification( UINT uType, // transaction t
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// reads it and says it can be freed.
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result = CreateDDEData( (LPBYTE)(const char*)outpt.get(),
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outpt.Length() + 1 );
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#ifdef MOZ_DEBUG_DDE
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#if MOZ_DEBUG_DDE
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printf( "WWW_GetWindowInfo->%s\n", outpt.get() );
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#endif
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} while ( PR_FALSE );
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@ -1436,7 +1513,31 @@ nsNativeAppSupportWin::HandleDDENotification( UINT uType, // transaction t
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#if MOZ_DEBUG_DDE
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printf( "Handling dde request: [%s]...\n", (char*)request );
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#endif
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HandleRequest( request );
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// Default is to open in current window.
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PRBool new_window = PR_FALSE;
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// Get the URL from the first argument in the command.
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HSZ args = ::DdeCreateStringHandle( mInstance, (const char*)request, CP_WINANSI );
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nsCAutoString url( ParseDDEArg( args, 0 ) );
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// Read the 3rd argument in the command to determine if a
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// new window is to be used.
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nsCAutoString windowID( ParseDDEArg( args, 2 ) );
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// "0" means to open the URL in a new window.
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if ( windowID.Equals( "0" ) ) {
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new_window = PR_TRUE;
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}
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// Make it look like command line args.
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url.Insert( "mozilla -url ", 0 );
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#if MOZ_DEBUG_DDE
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printf( "Handling dde XTYP_REQUEST request: [%s]...\n", url.get() );
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#endif
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// Now handle it.
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HandleRequest( LPBYTE( url.get() ), new_window );
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// Release the args string.
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::DdeFreeStringHandle( mInstance, args );
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// Release the data.
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DdeUnaccessData( hdata );
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result = (HDDEDATA)DDE_FACK;
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@ -1874,6 +1975,46 @@ nsNativeAppSupportWin::GetCmdLineArgs( LPBYTE request, nsICmdLineService **aResu
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nsresult
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nsNativeAppSupportWin::EnsureProfile(nsICmdLineService* args)
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{
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static PRBool firstTime = PR_TRUE;
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if ( firstTime ) {
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firstTime = PR_FALSE;
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// Check pref for whether to set ddeexec subkey entries.
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nsCOMPtr<nsIPref> prefService( do_GetService( NS_PREF_CONTRACTID ) );
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PRBool supportDDEExec = PR_FALSE;
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if ( prefService ) {
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prefService->GetBoolPref( "advanced.system.supportDDEExec", &supportDDEExec );
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}
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if ( supportDDEExec && handlingHTTP() ) {
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#if MOZ_DEBUG_DDE
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printf( "Setting ddexec subkey entries\n" );
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#endif
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// Set ddeexec default value.
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const char ddeexec[] = "\"%1\",,-1,0,,,,";
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::RegSetValue( HKEY_CLASSES_ROOT,
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"http\\shell\\open\\ddeexec",
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REG_SZ,
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ddeexec,
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sizeof ddeexec );
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// Set application/topic (while we're running), reset at exit.
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::RegSetValue( HKEY_CLASSES_ROOT,
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"http\\shell\\open\\ddeexec\\application",
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REG_SZ,
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mAppName,
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::strlen( mAppName ) );
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const char topic[] = "WWW_OpenURL";
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::RegSetValue( HKEY_CLASSES_ROOT,
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"http\\shell\\open\\ddeexec\\topic",
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REG_SZ,
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topic,
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sizeof topic );
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// Remember we need to undo this.
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mSupportingDDEExec = PR_TRUE;
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}
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}
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nsresult rv;
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nsCOMPtr<nsIProfileInternal> profileMgr(do_GetService(NS_PROFILE_CONTRACTID, &rv));
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