/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ /* This Source Code Form is subject to the terms of the Mozilla Public * License, v. 2.0. If a copy of the MPL was not distributed with this * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ #ifdef MOZ_OS2_HIGH_MEMORY // os2safe.h has to be included before os2.h, needed for high mem #include #endif #define INCL_PM #define INCL_GPI #define INCL_DOS #define INCL_DOSERRORS #include #include "nsNativeAppSupportBase.h" #include "nsNativeAppSupportOS2.h" #include "nsAppRunner.h" #include "nsXULAppAPI.h" #include "nsString.h" #include "nsIBrowserDOMWindow.h" #include "nsICommandLineRunner.h" #include "nsCOMPtr.h" #include "nsXPIDLString.h" #include "nsIComponentManager.h" #include "nsIServiceManager.h" #include "nsPIDOMWindow.h" #include "nsIDOMChromeWindow.h" #include "nsXPCOM.h" #include "nsISupportsPrimitives.h" #include "nsISupportsArray.h" #include "nsIWindowWatcher.h" #include "nsIDocShell.h" #include "nsIDocShellTreeItem.h" #include "nsIBaseWindow.h" #include "nsIWidget.h" #include "nsIAppShellService.h" #include "nsIXULWindow.h" #include "nsIInterfaceRequestor.h" #include "nsIInterfaceRequestorUtils.h" #include "nsIPromptService.h" #include "nsNetCID.h" #include "nsNetUtil.h" #include "nsIObserver.h" #include "nsIObserverService.h" // These are needed to load a URL in a browser window. #include "nsIDOMLocation.h" #include "nsIJSContextStack.h" #include "nsIWebNavigation.h" #include "nsIWindowMediator.h" #include #include "prprf.h" #define kMailtoUrlScheme "mailto:" /* trying to keep this like Window's COPYDATASTRUCT, but a compiler error is * forcing me to add chBuff so that we can append the data to the end of the * structure */ typedef struct _COPYDATASTRUCT { ULONG dwData; ULONG cbData; PVOID lpData; CHAR chBuff; }COPYDATASTRUCT, *PCOPYDATASTRUCT; #define WM_COPYDATA (WM_USER + 60) char szCommandLine[2*CCHMAXPATH]; static HWND hwndForDOMWindow( nsISupports * ); static nsresult GetMostRecentWindow(const PRUnichar* aType, nsIDOMWindow** aWindow) { nsresult rv; nsCOMPtr med( do_GetService( NS_WINDOWMEDIATOR_CONTRACTID, &rv ) ); if ( NS_FAILED( rv ) ) return rv; if ( med ) return med->GetMostRecentWindow( aType, aWindow ); return NS_ERROR_FAILURE; } static void activateWindow( nsIDOMWindow *win ) { // Try to get native window handle. HWND hwnd = hwndForDOMWindow( win ); if ( hwnd ) { /* if we are looking at a client window, then we really probably want * the frame so that we can manipulate THAT */ LONG id = WinQueryWindowUShort( hwnd, QWS_ID ); if( id == FID_CLIENT ) { hwnd = WinQueryWindow( hwnd, QW_PARENT ); } // Restore the window in case it is minimized. // Use the OS call, if possible. WinSetWindowPos( hwnd, 0L, 0L, 0L, 0L, 0L, SWP_SHOW | SWP_RESTORE | SWP_ACTIVATE ); } else { // Use internal method. win->Focus(); } } #ifdef DEBUG_law #undef MOZ_DEBUG_DDE #define MOZ_DEBUG_DDE 1 #endif // Simple Win32 mutex wrapper. struct Mutex { Mutex( const char *name ) : mName( name ), mHandle( 0 ), mState( 0xFFFF ) { /* OS/2 named semaphores must begin with "\\SEM32\\" to be valid */ mName.Insert("\\SEM32\\", 0); APIRET rc = DosCreateMutexSem(mName.get(), &mHandle, 0, FALSE); if (rc != NO_ERROR) { #if MOZ_DEBUG_DDE printf("CreateMutex error = 0x%08X\n", (int)rc); #endif } } ~Mutex() { if ( mHandle ) { // Make sure we release it if we own it. Unlock(); APIRET rc = DosCloseMutexSem(mHandle); if (rc != NO_ERROR) { #if MOZ_DEBUG_DDE printf("CloseHandle error = 0x%08X\n", (int)rc); #endif } } } BOOL Lock( DWORD timeout ) { if ( mHandle ) { #if MOZ_DEBUG_DDE printf( "Waiting (%d msec) for DDE mutex...\n", (int)timeout ); #endif mState = DosRequestMutexSem( mHandle, timeout ); #if MOZ_DEBUG_DDE printf( "...wait complete, result = 0x%08X\n", (int)mState ); #endif return (mState == NO_ERROR); } else { return FALSE; } } void Unlock() { if ( mHandle && mState == NO_ERROR ) { #if MOZ_DEBUG_DDE printf( "Releasing DDE mutex\n" ); #endif DosReleaseMutexSem( mHandle ); mState = 0xFFFF; } } private: nsCString mName; HMTX mHandle; DWORD mState; }; /* DDE Notes * * This section describes the Win32 DDE service implementation for * Mozilla. DDE is used on Win32 platforms to communicate between * separate instances of mozilla.exe (or other Mozilla-based * executables), or, between the Win32 desktop shell and Mozilla. * * The first instance of Mozilla will become the "server" and * subsequent executables (and the shell) will use DDE to send * requests to that process. The requests are DDE "execute" requests * that pass the command line arguments. * * Mozilla registers the DDE application "Mozilla" and currently * supports only the "WWW_OpenURL" topic. This should be reasonably * compatible with applications that interfaced with Netscape * Communicator (and its predecessors?). Note that even that topic * may not be supported in a compatible fashion as the command-line * options for Mozilla are different than for Communiator. * * It is imperative that at most one instance of Mozilla execute in * "server mode" at any one time. The "native app support" in Mozilla * on Win32 ensures that only the server process performs XPCOM * initialization (that is not required for subsequent client processes * to communicate with the server process). * * To guarantee that only one server starts up, a Win32 "mutex" is used * to ensure only one process executes the server-detection code. That * code consists of initializing DDE and doing a DdeConnect to Mozilla's * application/topic. If that connection succeeds, then a server process * must be running already. * * Otherwise, no server has started. In that case, the current process * calls DdeNameService to register that application/topic. Only at that * point does the mutex get released. * * There are a couple of subtleties that one should be aware of: * * 1. It is imperative that DdeInitialize be called only after the mutex * lock has been obtained. The reason is that at shutdown, DDE * notifications go out to all initialized DDE processes. Thus, if * the mutex is owned by a terminating intance of Mozilla, then * calling DdeInitialize and then WaitForSingleObject will cause the * DdeUninitialize from the terminating process to "hang" until the * process waiting for the mutex times out (and can then service the * notification that the DDE server is terminating). So, don't mess * with the sequence of things in the startup/shutdown logic. * * 2. All mutex requests are made with a reasonably long timeout value and * are designed to "fail safe" (i.e., a timeout is treated as failure). * * 3. An attempt has been made to minimize the degree to which the main * Mozilla application logic needs to be aware of the DDE mechanisms * implemented herein. As a result, this module surfaces a very * large-grained interface, consisting of simple start/stop methods. * As a consequence, details of certain scenarios can be "lost." * Particularly, incoming DDE requests can arrive after this module * initiates the DDE server, but before Mozilla is initialized to the * point where those requests can be serviced (e.g., open a browser * window to a particular URL). Since the client process sends the * request early on, it may not be prepared to respond to that error. * Thus, such situations may fail silently. The design goal is that * they fail harmlessly. Refinements on this point will be made as * details emerge (and time permits). */ /* Update 2001 March * * A significant DDE bug in Windows is causing Mozilla to get wedged at * startup. This is detailed in Bugzill bug 53952 * (http://bugzilla.mozilla.org/show_bug.cgi?id=53952). * * To resolve this, we are using a new strategy: * o Use a "message window" to detect that Mozilla is already running and * to pass requests from a second instance back to the first; * o Run only as a "DDE server" (not as DDE client); this avoids the * problematic call to DDEConnect(). * * We still use the mutex semaphore to protect the code that detects * whether Mozilla is already running. */ class nsNativeAppSupportOS2 : public nsNativeAppSupportBase, public nsIObserver { public: NS_DECL_NSIOBSERVER NS_DECL_ISUPPORTS_INHERITED // Overrides of base implementation. NS_IMETHOD Start( bool *aResult ); NS_IMETHOD Stop( bool *aResult ); NS_IMETHOD Quit(); NS_IMETHOD Enable(); // The "old" Start method (renamed). NS_IMETHOD StartDDE(); // Utility function to handle a Win32-specific command line // option: "-console", which dynamically creates a Windows // console. void CheckConsole(); private: static HDDEDATA APIENTRY HandleDDENotification( ULONG idInst, USHORT uType, USHORT uFmt, HCONV hconv, HSZ hsz1, HSZ hsz2, HDDEDATA hdata, ULONG dwData1, ULONG dwData2 ); static void HandleCommandLine(const char* aCmdLineString, nsIFile* aWorkingDir, uint32_t aState); static void ParseDDEArg( HSZ args, int index, nsCString& string); static void ParseDDEArg( const char* args, int index, nsCString& aString); static void ActivateLastWindow(); static HDDEDATA CreateDDEData( DWORD value ); static HDDEDATA CreateDDEData( LPBYTE value, DWORD len ); static bool InitTopicStrings(); static int FindTopic( HSZ topic ); static nsresult OpenWindow( const char *urlstr, const char *args ); static nsresult OpenBrowserWindow(); static int mConversations; enum { topicOpenURL, topicActivate, topicCancelProgress, topicVersion, topicRegisterViewer, topicUnRegisterViewer, topicGetWindowInfo, // Note: Insert new values above this line!!!!! topicCount // Count of the number of real topics }; static HSZ mApplication, mTopics[ topicCount ]; static DWORD mInstance; static bool mCanHandleRequests; static char mMutexName[]; static bool mUseDDE; friend struct MessageWindow; }; // nsNativeAppSupportOS2 NS_INTERFACE_MAP_BEGIN(nsNativeAppSupportOS2) NS_INTERFACE_MAP_ENTRY(nsIObserver) NS_INTERFACE_MAP_END_INHERITING(nsNativeAppSupportBase) NS_IMPL_ADDREF_INHERITED(nsNativeAppSupportOS2, nsNativeAppSupportBase) NS_IMPL_RELEASE_INHERITED(nsNativeAppSupportOS2, nsNativeAppSupportBase) void nsNativeAppSupportOS2::CheckConsole() { return; } // Create and return an instance of class nsNativeAppSupportOS2. nsresult NS_CreateNativeAppSupport( nsINativeAppSupport **aResult ) { nsNativeAppSupportOS2 *pNative = new nsNativeAppSupportOS2; if (!pNative) return NS_ERROR_OUT_OF_MEMORY; // Check for dynamic console creation request. pNative->CheckConsole(); *aResult = pNative; NS_ADDREF( *aResult ); return NS_OK; } // Constants #define MOZ_DDE_APPLICATION "Mozilla" #define MOZ_STARTUP_MUTEX_NAME "StartupMutex" #define MOZ_DDE_START_TIMEOUT 30000 #define MOZ_DDE_STOP_TIMEOUT 15000 #define MOZ_DDE_EXEC_TIMEOUT 15000 // The array entries must match the enum ordering! const char * const topicNames[] = { "WWW_OpenURL", "WWW_Activate", "WWW_CancelProgress", "WWW_Version", "WWW_RegisterViewer", "WWW_UnRegisterViewer", "WWW_GetWindowInfo" }; // Static member definitions. int nsNativeAppSupportOS2::mConversations = 0; HSZ nsNativeAppSupportOS2::mApplication = 0; HSZ nsNativeAppSupportOS2::mTopics[nsNativeAppSupportOS2::topicCount] = { 0 }; DWORD nsNativeAppSupportOS2::mInstance = 0; bool nsNativeAppSupportOS2::mCanHandleRequests = false; // Added this as pmddeml has no api like this int DdeCmpStringHandles( HSZ hsz1, HSZ hsz2 ) { char chhsz1[CCHMAXPATH], chhsz2[CCHMAXPATH]; int rc = -1; /* I am assuming that the strings will never be more that CCHMAXPATH in * length. Safe bet (for now). To find true length, call WinDdeQueryString * and pass in (hsz, NULL, 0L, 0) and it will return iLength. Passing 0 * for codepage will use the codepage of the current thread. */ WinDdeQueryString( hsz1, chhsz1, sizeof( chhsz1 ), 0 ); WinDdeQueryString( hsz2, chhsz2, sizeof( chhsz2 ),0 ); rc = stricmp( chhsz1, chhsz2 ); return(rc); } char *GetCommandLine() { /* This function is meant to be like the Window's GetCommandLine() function. * The value returned by pPIB->pib_pchcmd is of the format: * \0. So the first string is the * .exe and the second string is what followed on the command line. Dorky, * but I guess it'll have to do. */ PTIB pTIB = NULL; PPIB pPIB = NULL; APIRET rc = NO_ERROR; char *pchParam = NULL; rc = DosGetInfoBlocks( &pTIB, &pPIB ); if( rc == NO_ERROR ) { INT iLen = 0; char *pchTemp = NULL; pchParam = pPIB->pib_pchcmd; strcpy( szCommandLine, pchParam ); iLen = strlen( pchParam ); /* szCommandLine[iLen] is '\0', so see what's next. Probably be another * '\0', a space or start of the arguments */ pchTemp = &(pchParam[iLen+1]); /* At this point, szCommandLine holds just the program name. Now we * go for the parameters. If our next value is a space, ignore it * and go for the next character */ if( *pchTemp ) { szCommandLine[iLen] = ' '; iLen++; if( *pchTemp == ' ' ) { pchTemp++; } strcpy( &(szCommandLine[iLen]), pchTemp ); } } return( szCommandLine ); } typedef struct _DDEMLFN { PFN *fn; ULONG ord; } DDEMLFN, *PDDEMLFN; DDEMLFN ddemlfnTable[] = { { (PFN *)&WinDdeAbandonTransaction ,100 }, { (PFN *)&WinDdeAccessData ,101 }, { (PFN *)&WinDdeAddData ,102 }, { (PFN *)&WinDdeSubmitTransaction ,103 }, { (PFN *)&WinDdeCompareStringHandles ,104 }, { (PFN *)&WinDdeConnect ,105 }, { (PFN *)&WinDdeConnectList ,106 }, { (PFN *)&WinDdeCreateDataHandle ,107 }, { (PFN *)&WinDdeCreateStringHandle ,108 }, { (PFN *)&WinDdeDisconnect ,109 }, { (PFN *)&WinDdeDisconnectList ,110 }, { (PFN *)&WinDdeEnableCallback ,111 }, { (PFN *)&WinDdeFreeDataHandle ,112 }, { (PFN *)&WinDdeFreeStringHandle ,113 }, { (PFN *)&WinDdeGetData ,114 }, { (PFN *)&WinDdeInitialize ,116 }, { (PFN *)&WinDdeKeepStringHandle ,117 }, { (PFN *)&WinDdeNameService ,118 }, { (PFN *)&WinDdePostAdvise ,119 }, { (PFN *)&WinDdeQueryConvInfo ,120 }, { (PFN *)&WinDdeQueryNextServer ,121 }, { (PFN *)&WinDdeQueryString ,122 }, { (PFN *)&WinDdeReconnect ,123 }, { (PFN *)&WinDdeSetUserHandle ,124 }, { (PFN *)&WinDdeUninitialize ,126 }, { (PFN *)NULL , 0 } }; /* SetupOS2ddeml makes sure that we can get pointers to all of the DDEML * functions in demlfnTable using entrypoints. If we can't find one of them * or can't load pmddeml.dll, then returns FALSE */ BOOL SetupOS2ddeml() { BOOL bRC = FALSE; HMODULE hmodDDEML = NULLHANDLE; APIRET rc = NO_ERROR; rc = DosLoadModule( NULL, 0, "PMDDEML", &hmodDDEML ); if( rc == NO_ERROR ) { int i; /* all of this had better work. Get ready to be a success! */ bRC = TRUE; for( i=0; ddemlfnTable[i].ord != 0; i++ ) { rc = DosQueryProcAddr( hmodDDEML, ddemlfnTable[i].ord, NULL, ddemlfnTable[i].fn ); if( rc != NO_ERROR ) { /* we're horked. Return rc = horked */ bRC = FALSE; break; } } } /* load PMDDEML */ return( bRC ); } char nsNativeAppSupportOS2::mMutexName[ 128 ] = { 0 }; // Message window encapsulation. struct MessageWindow { // ctor/dtor are simplistic MessageWindow() { // Try to find window. HATOMTBL hatomtbl; HENUM henum; HWND hwndNext; char classname[CCHMAXPATH]; mHandle = NULLHANDLE; hatomtbl = WinQuerySystemAtomTable(); mMsgWindowAtom = WinFindAtom(hatomtbl, className()); if (mMsgWindowAtom == 0) { // If there is not atom in the system table for this class name, then // we can assume that the app is not currently running. mMsgWindowAtom = WinAddAtom(hatomtbl, className()); } else { // Found an existing atom for this class name. Cycle through existing // windows and see if one with our window id and class name already // exists henum = WinBeginEnumWindows(HWND_OBJECT); while ((hwndNext = WinGetNextWindow(henum)) != NULLHANDLE) { if (WinQueryWindowUShort(hwndNext, QWS_ID) == (USHORT)mMsgWindowAtom) { WinQueryClassName(hwndNext, CCHMAXPATH, classname); if (strcmp(classname, className()) == 0) { mHandle = hwndNext; break; } } } } } HWND getHWND() { return mHandle; } // Class name: appName + "MessageWindow" static const char *className() { static char classNameBuffer[128]; static char *mClassName = 0; if ( !mClassName ) { sprintf( classNameBuffer, "%s%s", gAppData->name, "MessageWindow" ); mClassName = classNameBuffer; } return mClassName; } // Create: Register class and create window. NS_IMETHOD Create() { // Register the window class. NS_ENSURE_TRUE( WinRegisterClass( 0, className(), (PFNWP)&MessageWindow::WindowProc, 0L, 0 ), NS_ERROR_FAILURE ); /* Giving a size but offscreen so that won't be seen, even if all * goes wrong. Giving a size so that can be seen and understood by * tools */ const char * pszClassName = className(); mHandle = WinCreateWindow( HWND_OBJECT, pszClassName, NULL, // name WS_DISABLED, // style 0,0, // x, y 0,0, // cx,cy HWND_DESKTOP,// owner HWND_BOTTOM, // hwndbehind (USHORT)mMsgWindowAtom, // id NULL, // pCtlData NULL ); // pres params #if MOZ_DEBUG_DDE printf( "Message window = 0x%08X\n", (int)mHandle ); #endif return NS_OK; } // Destory: Get rid of window and reset mHandle. NS_IMETHOD Destroy() { nsresult retval = NS_OK; if ( mHandle ) { HATOMTBL hatomtbl = WinQuerySystemAtomTable(); WinDeleteAtom(hatomtbl, mMsgWindowAtom); // DestroyWindow can only destroy windows created from // the same thread. BOOL desRes = WinDestroyWindow( mHandle ); if ( FALSE != desRes ) { mHandle = NULL; } else { retval = NS_ERROR_FAILURE; } } return retval; } // SendRequest: Construct a data buffer \0\0, // then pass the string via WM_COPYDATA to the message window. NS_IMETHOD SendRequest( const char *cmd ) { /* Nothing like WM_COPYDATA in OS/2, where the OS allows pointers to be * passed to a different process and automatically accessible by that * process. So we have to create shared mem on our side and then the * process that gets the WM_COPYDATA message has to do a * DosGetSharedMem on this pointer to be able to access the data */ COPYDATASTRUCT *pcds; PVOID pvData = NULL; if (!cmd) return NS_ERROR_FAILURE; ULONG ulSize = sizeof(COPYDATASTRUCT)+strlen(cmd)+1+CCHMAXPATH; #ifdef MOZ_OS2_HIGH_MEMORY APIRET rc = DosAllocSharedMem( &pvData, NULL, ulSize, PAG_COMMIT | PAG_READ | PAG_WRITE | OBJ_GETTABLE | OBJ_ANY); if (rc != NO_ERROR) { // Did the kernel handle OBJ_ANY? // Try again without OBJ_ANY and if the first failure was not caused // by OBJ_ANY then we will get the same failure, else we have taken // care of pre-FP13 systems where the kernel couldn't handle it. rc = DosAllocSharedMem( &pvData, NULL, ulSize, PAG_COMMIT | PAG_READ | PAG_WRITE | OBJ_GETTABLE); if (rc != NO_ERROR) { return NS_ERROR_OUT_OF_MEMORY; } } #else if (DosAllocSharedMem( &pvData, NULL, ulSize, PAG_COMMIT | PAG_READ | PAG_WRITE | OBJ_GETTABLE | OBJ_ANY)) return NS_ERROR_OUT_OF_MEMORY; #endif // We used to set dwData to zero, when we didn't send the // working dir. Now we're using it as a version number. // The commandline goes in the buffer space immediately after // the COPYDATASTRUCT; the current directory follows that. pcds = (COPYDATASTRUCT *)(pvData); pcds->dwData = 1; char * ptr = &(pcds->chBuff); pcds->lpData = ptr; strcpy( ptr, cmd); pcds->cbData = strlen( ptr) + 1; ptr += pcds->cbData; if (DosQueryPathInfo( ".", FIL_QUERYFULLNAME, ptr, CCHMAXPATH)) { ptr[0] = '.'; ptr[1] = '\0'; } pcds->cbData += strlen( ptr) + 1; WinSendMsg( mHandle, WM_COPYDATA, 0, (MPARAM)pcds ); DosFreeMem( pvData ); return NS_OK; } // Window proc. static MRESULT EXPENTRY WindowProc( HWND msgWindow, ULONG msg, MPARAM wp, MPARAM lp ) { // We have to return a FALSE from WM_CREATE if ( msg == WM_CREATE ) return (MRESULT)FALSE; if ( msg != WM_COPYDATA ) return (MRESULT)TRUE; // This is an incoming request. COPYDATASTRUCT *cds = (COPYDATASTRUCT*)lp; DosGetSharedMem( (PVOID)cds, PAG_READ|PAG_WRITE ); nsCOMPtr workingDir; // a "1" or greater indicates that the other process's working // directory follows the commandline string - locate & convert it if (cds->dwData >= 1) { char* wdpath = strchr( (char*)cds->lpData, 0) + 1; NS_NewNativeLocalFile(nsDependentCString(wdpath), false, getter_AddRefs(workingDir)); } nsNativeAppSupportOS2::HandleCommandLine((char*)cds->lpData, workingDir, nsICommandLine::STATE_REMOTE_AUTO); return (MRESULT)TRUE; } private: HWND mHandle; USHORT mMsgWindowAtom; }; // struct MessageWindow bool nsNativeAppSupportOS2::mUseDDE = false; /* Start: Tries to find the "message window" to determine if it * exists. If so, then Mozilla is already running. In that * case, we use the handle to the "message" window and send * a request corresponding to this process's command line * options. * * If not, then this is the first instance of Mozilla. In * that case, we create and set up the message window. * * The checking for existence of the message window must * be protected by use of a mutex semaphore. */ NS_IMETHODIMP nsNativeAppSupportOS2::Start( bool *aResult ) { NS_ENSURE_ARG( aResult ); NS_ENSURE_TRUE( mInstance == 0, NS_ERROR_NOT_INITIALIZED ); nsresult rv = NS_ERROR_FAILURE; *aResult = false; // see if DDE should be enabled AND remove OS/2-specific // options the app's commandline handler won't recognize // (-console was handled earlier by StartOS2App()) for (int i = 1; i < gArgc; i++) { if (stricmp("-dde", gArgv[i]) == 0 || stricmp("/dde", gArgv[i]) == 0) mUseDDE = true; else if (stricmp("-console", gArgv[i]) != 0 && stricmp("/console", gArgv[i]) != 0) continue; for (int j = i; j < gArgc; j++) gArgv[j] = gArgv[j+1]; gArgc--; i--; } // if this is a standalone instance, turn off DDE regardless of the // commandline, then skip out before we look for another instance if (getenv("MOZ_NO_REMOTE")) { mUseDDE = false; *aResult = true; return NS_OK; } // Grab mutex first. // Build mutex name from app name. PR_snprintf( mMutexName, sizeof mMutexName, "%s%s", gAppData->name, MOZ_STARTUP_MUTEX_NAME ); Mutex startupLock = Mutex( mMutexName ); NS_ENSURE_TRUE( startupLock.Lock( MOZ_DDE_START_TIMEOUT ), NS_ERROR_FAILURE ); /* We need to have a message queue to do the MessageWindow stuff (for both * Create() and SendRequest()). If we don't have one, make it now. * If we are going to end up going away right after ::Start() returns, * then make sure to clean up the message queue. */ MQINFO mqinfo; HAB hab; HMQ hmqCurrent = WinQueryQueueInfo( HMQ_CURRENT, &mqinfo, sizeof( MQINFO ) ); if( !hmqCurrent ) { hab = WinInitialize( 0 ); hmqCurrent = WinCreateMsgQueue( hab, 0 ); } // Search for existing message window. MessageWindow msgWindow; if ( msgWindow.getHWND() ) { // We are a client process. Pass request to message window. char *cmd = GetCommandLine(); rv = msgWindow.SendRequest( cmd ); } else { // We will be server. rv = msgWindow.Create(); if ( NS_SUCCEEDED( rv ) ) { // Start up DDE server if (mUseDDE) this->StartDDE(); // Tell caller to spin message loop. *aResult = true; } } startupLock.Unlock(); if( *aResult == false ) { /* This process isn't going to continue much longer. Make sure that we * clean up the message queue */ if (hmqCurrent) WinDestroyMsgQueue(hmqCurrent); if (hab) WinTerminate(hab); } return rv; } bool nsNativeAppSupportOS2::InitTopicStrings() { for ( int i = 0; i < topicCount; i++ ) { if ( !( mTopics[ i ] = WinDdeCreateStringHandle( (PSZ)topicNames[ i ], CP_WINANSI ) ) ) { return false; } } return true; } int nsNativeAppSupportOS2::FindTopic( HSZ topic ) { for ( int i = 0; i < topicCount; i++ ) { if ( DdeCmpStringHandles( topic, mTopics[i] ) == 0 ) { return i; } } return -1; } // Start DDE server. // // This used to be the Start() method when we were using DDE as the // primary IPC mechanism between secondary Mozilla processes and the // initial "server" process. // // Now, it simply initializes the DDE server. The caller must check // that this process is to be the server, and, must acquire the DDE // startup mutex semaphore prior to calling this routine. See ::Start(), // above. NS_IMETHODIMP nsNativeAppSupportOS2::StartDDE() { NS_ENSURE_TRUE( mInstance == 0, NS_ERROR_NOT_INITIALIZED ); /* Get entrypoints for PMDDEML */ BOOL bDDEML = SetupOS2ddeml(); /* If we couldn't initialize DDEML, set mUSEDDE to false */ /* so we don't do anything else DDE related */ if (!bDDEML) { mUseDDE = false; return NS_OK; } // Initialize DDE. NS_ENSURE_TRUE( DDEERR_NO_ERROR == WinDdeInitialize( &mInstance, nsNativeAppSupportOS2::HandleDDENotification, APPCLASS_STANDARD, 0 ), NS_ERROR_FAILURE ); // Allocate DDE strings. NS_ENSURE_TRUE( ( mApplication = WinDdeCreateStringHandle( (char*) gAppData->name, CP_WINANSI ) ) && InitTopicStrings(), NS_ERROR_FAILURE ); // Next step is to register a DDE service. NS_ENSURE_TRUE( WinDdeNameService( mInstance, mApplication, 0, DNS_REGISTER ), NS_ERROR_FAILURE ); #if MOZ_DEBUG_DDE printf( "DDE server started\n" ); #endif return NS_OK; } // If no DDE conversations are pending, terminate DDE. NS_IMETHODIMP nsNativeAppSupportOS2::Stop( bool *aResult ) { NS_ENSURE_ARG( aResult ); NS_ENSURE_TRUE( mInstance, NS_ERROR_NOT_INITIALIZED ); nsresult rv = NS_OK; *aResult = true; if (!mUseDDE) { return rv; } Mutex ddeLock( mMutexName ); if ( ddeLock.Lock( MOZ_DDE_STOP_TIMEOUT ) ) { if ( mConversations == 0 ) { this->Quit(); } else { *aResult = false; } ddeLock.Unlock(); } else { // No DDE application name specified, but that's OK. Just // forge ahead. *aResult = true; } return rv; } NS_IMETHODIMP nsNativeAppSupportOS2::Observe(nsISupports* aSubject, const char* aTopic, const PRUnichar* aData) { if (strcmp(aTopic, "quit-application") == 0) { Quit(); } else { NS_ERROR("Unexpected observer topic."); } return NS_OK; } // Terminate DDE regardless. NS_IMETHODIMP nsNativeAppSupportOS2::Quit() { // If another process wants to look for the message window, they need // to wait to hold the lock, in which case they will not find the // window as we will destroy ours under our lock. // When the mutex goes off the stack, it is unlocked via destructor. Mutex mutexLock(mMutexName); NS_ENSURE_TRUE(mutexLock.Lock(MOZ_DDE_START_TIMEOUT), NS_ERROR_FAILURE); // If we've got a message window to receive IPC or new window requests, // get rid of it as we are shutting down. // Note: Destroy calls DestroyWindow, which will only work on a window // created by the same thread. MessageWindow mw; mw.Destroy(); if ( mInstance ) { // Unregister application name. WinDdeNameService( mInstance, mApplication, 0, DNS_UNREGISTER ); // Clean up strings. if ( mApplication ) { WinDdeFreeStringHandle( mApplication ); mApplication = 0; } for ( int i = 0; i < topicCount; i++ ) { if ( mTopics[i] ) { WinDdeFreeStringHandle( mTopics[i] ); mTopics[i] = 0; } } WinDdeUninitialize( mInstance ); mInstance = 0; } return NS_OK; } NS_IMETHODIMP nsNativeAppSupportOS2::Enable() { mCanHandleRequests = true; nsCOMPtr obs = mozilla::services::GetObserverService(); if (obs) { obs->AddObserver(this, "quit-application", false); } else { NS_ERROR("No observer service?"); } return NS_OK; } #if MOZ_DEBUG_DDE // Macro to generate case statement for a given XTYP value. #define XTYP_CASE(t) \ case t: result = #t; break static nsCString uTypeDesc( UINT uType ) { nsCString result; switch ( uType ) { XTYP_CASE(XTYP_ADVSTART); XTYP_CASE(XTYP_CONNECT); XTYP_CASE(XTYP_ADVREQ); XTYP_CASE(XTYP_REQUEST); XTYP_CASE(XTYP_WILDCONNECT); XTYP_CASE(XTYP_ADVDATA); XTYP_CASE(XTYP_EXECUTE); XTYP_CASE(XTYP_POKE); XTYP_CASE(XTYP_ADVSTOP); XTYP_CASE(XTYP_CONNECT_CONFIRM); XTYP_CASE(XTYP_DISCONNECT); XTYP_CASE(XTYP_ERROR); XTYP_CASE(XTYP_MONITOR); XTYP_CASE(XTYP_REGISTER); XTYP_CASE(XTYP_XACT_COMPLETE); XTYP_CASE(XTYP_UNREGISTER); default: result = "XTYP_?????"; } return result; } static nsCString hszValue( DWORD instance, HSZ hsz ) { // Extract string from HSZ. nsCString result("["); DWORD len = WinDdeQueryString( hsz, NULL, NULL, CP_WINANSI ); if ( len ) { char buffer[ 256 ]; WinDdeQueryString( hsz, buffer, sizeof buffer, CP_WINANSI ); result += buffer; } result += "]"; return result; } #endif // Utility function to escape double-quotes within a string. static void escapeQuotes( nsAString &aString ) { int32_t offset = -1; while( 1 ) { // Find next '"'. offset = aString.FindChar( '"', ++offset ); if ( offset == kNotFound ) { // No more quotes, exit. break; } else { // Insert back-slash ahead of the '"'. aString.Insert( PRUnichar('\\'), offset ); // Increment offset because we just inserted a slash offset++; } } return; } HDDEDATA APIENTRY nsNativeAppSupportOS2::HandleDDENotification( ULONG idInst, // DDEML instance USHORT uType, // transaction type USHORT uFmt, // clipboard data format HCONV hconv, // handle to the conversation HSZ hsz1, // handle to a string HSZ hsz2, // handle to a string HDDEDATA hdata, // handle to a global memory object ULONG dwData1, // transaction-specific data ULONG dwData2 ) { // transaction-specific data #if MOZ_DEBUG_DDE printf( "DDE: uType =%s\n", uTypeDesc( uType ).get() ); printf( " uFmt =%u\n", (unsigned)uFmt ); printf( " hconv =%08x\n", (int)hconv ); printf( " hsz1 =%08x:%s\n", (int)hsz1, hszValue( mInstance, hsz1 ).get() ); printf( " hsz2 =%08x:%s\n", (int)hsz2, hszValue( mInstance, hsz2 ).get() ); printf( " hdata =%08x\n", (int)hdata ); printf( " dwData1=%08x\n", (int)dwData1 ); printf( " dwData2=%08x\n", (int)dwData2 ); #endif HDDEDATA result = 0; if ( uType & XCLASS_BOOL ) { switch ( uType ) { case XTYP_CONNECT: // Make sure its for our service/topic. if ( FindTopic( hsz1 ) != -1 ) { // We support this connection. result = (HDDEDATA)1; } break; case XTYP_CONNECT_CONFIRM: // We don't care about the conversation handle, at this point. result = (HDDEDATA)1; break; } } else if ( uType & XCLASS_DATA ) { if ( uType == XTYP_REQUEST ) { switch ( FindTopic( hsz1 ) ) { case topicOpenURL: { // Open a given URL... // Get the URL from the first argument in the command. nsAutoCString url; ParseDDEArg(hsz2, 0, url); // Read the 3rd argument in the command to determine if a // new window is to be used. nsAutoCString windowID; ParseDDEArg(hsz2, 2, windowID); // to open the URL in a new window, the old OS/2 code // looks for "0" while the new Win32 code looks for ""; // not knowing which is correct, we'll look for both if (windowID.Equals( "0" ) || windowID.Equals( "" )) url.Insert("mozilla -new-window ", 0); else url.Insert("mozilla -url ", 0); #if MOZ_DEBUG_DDE printf( "Handling dde XTYP_REQUEST request: [%s]...\n", url.get() ); #endif // Now handle it. HandleCommandLine(url.get(), nullptr, nsICommandLine::STATE_REMOTE_EXPLICIT); // Return pseudo window ID. result = CreateDDEData( 1 ); break; } case topicGetWindowInfo: { // This topic has to get the current URL, get the current // page title and then format the output into the DDE // return string. The return value is "URL","Page Title", // "Window ID" however the window ID is not used for this // command, therefore it is returned as a null string // This isn't really a loop. We just use "break" // statements to bypass the remaining steps when // something goes wrong. do { // Get most recently used Nav window. nsCOMPtr navWin; GetMostRecentWindow( NS_LITERAL_STRING( "navigator:browser" ).get(), getter_AddRefs( navWin ) ); if ( !navWin ) { // There is not a window open break; } // Get content window. nsCOMPtr content; navWin->GetContent( getter_AddRefs( content ) ); if ( !content ) { break; } // Convert that to internal interface. nsCOMPtr internalContent( do_QueryInterface( content ) ); if ( !internalContent ) { break; } // Get location. nsCOMPtr location; internalContent->GetLocation( getter_AddRefs( location ) ); if ( !location ) { break; } // Get href for URL. nsAutoString url; if ( NS_FAILED( location->GetHref( url ) ) ) { break; } // Escape any double-quotes. escapeQuotes( url ); // Now for the title... // Get the base window from the doc shell... nsCOMPtr baseWindow = do_QueryInterface( internalContent->GetDocShell() ); if ( !baseWindow ) { break; } // And from the base window we can get the title. nsXPIDLString title; if(!baseWindow) { break; } baseWindow->GetTitle(getter_Copies(title)); // Escape any double-quotes in the title. escapeQuotes( title ); // Use a string buffer for the output data, first // save a quote. nsAutoCString outpt( NS_LITERAL_CSTRING("\"") ); // Now copy the URL converting the Unicode string // to a single-byte ASCII string outpt.Append( NS_LossyConvertUTF16toASCII( url ) ); // Add the "," used to separate the URL and the page // title outpt.Append( NS_LITERAL_CSTRING("\",\"") ); // Now copy the current page title to the return string outpt.Append( NS_LossyConvertUTF16toASCII( title.get() )); // Fill out the return string with the remainin ","" outpt.Append( NS_LITERAL_CSTRING( "\",\"\"" )); // Create a DDE handle to a char string for the data // being returned, this copies and creates a "shared" // copy of the DDE response until the calling APP // reads it and says it can be freed. result = CreateDDEData( (LPBYTE)(const char*)outpt.get(), outpt.Length() + 1 ); #if MOZ_DEBUG_DDE printf( "WWW_GetWindowInfo->%s\n", outpt.get() ); #endif } while ( false ); break; } case topicActivate: { // Activate a Nav window... nsAutoCString windowID; ParseDDEArg(hsz2, 0, windowID); // 4294967295 is decimal for 0xFFFFFFFF which is also a // correct value to do that Activate last window stuff if ( windowID.Equals( "-1" ) || windowID.Equals( "4294967295" ) ) { // We only support activating the most recent window (or a new one). ActivateLastWindow(); // Return pseudo window ID. result = CreateDDEData( 1 ); } break; } case topicVersion: { // Return version. We're restarting at 1.0! DWORD version = 1 << 16; // "1.0" result = CreateDDEData( version ); break; } case topicRegisterViewer: { // Register new viewer (not implemented). result = CreateDDEData( false ); break; } case topicUnRegisterViewer: { // Unregister new viewer (not implemented). result = CreateDDEData( false ); break; } default: break; } } else if ( uType & XTYP_POKE ) { switch ( FindTopic( hsz1 ) ) { case topicCancelProgress: { // "Handle" progress cancel (actually, pretty much ignored). result = (HDDEDATA)DDE_FACK; break; } default: break; } } } else if ( uType & XCLASS_FLAGS ) { if ( uType == XTYP_EXECUTE ) { // Prove that we received the request. DWORD bytes; LPBYTE request = (LPBYTE)WinDdeAccessData( hdata, &bytes ); #if MOZ_DEBUG_DDE printf( "Handling dde request: [%s]...\n", (char*)request ); #endif nsAutoCString url; ParseDDEArg((const char*) request, 0, url); // Read the 3rd argument in the command to determine if a // new window is to be used. nsAutoCString windowID; ParseDDEArg((const char*) request, 2, windowID); // to open the URL in a new window, the old OS/2 code // looks for "0" while the new Win32 code looks for ""; // not knowing which is correct, we'll look for both if (windowID.Equals( "0" ) || windowID.Equals( "" )) url.Insert("mozilla -new-window ", 0); else url.Insert("mozilla -url ", 0); #if MOZ_DEBUG_DDE printf( "Handling dde XTYP_REQUEST request: [%s]...\n", url.get() ); #endif // Now handle it. HandleCommandLine(url.get(), nullptr, nsICommandLine::STATE_REMOTE_EXPLICIT); // Release the data. // DdeUnaccessData( hdata ); result = (HDDEDATA)DDE_FACK; } else { result = (HDDEDATA)DDE_NOTPROCESSED; } } else if ( uType & XCLASS_NOTIFICATION ) { } #if MOZ_DEBUG_DDE printf( "DDE result=%d (0x%08X)\n", (int)result, (int)result ); #endif return result; } // Utility function to advance to end of quoted string. // p+offset must point to the comma preceding the arg on entry. // On return, p+result points to the closing '"' (or end of the string // if the closing '"' is missing) if the arg is quoted. If the arg // is not quoted, then p+result will point to the first character // of the arg. static int32_t advanceToEndOfQuotedArg( const char *p, int32_t offset, int32_t len ) { // Check whether the current arg is quoted. if ( p[++offset] == '"' ) { // Advance past the closing quote. while ( offset < len && p[++offset] != '"' ) { // If the current character is a backslash, then the // next character can't be a *real* '"', so skip it. if ( p[offset] == '\\' ) { offset++; } } } return offset; } void nsNativeAppSupportOS2::ParseDDEArg( const char* args, int index, nsCString& aString) { if ( args ) { int argLen = strlen(args); nsDependentCString temp(args, argLen); // offset points to the comma preceding the desired arg. int32_t offset = -1; // Skip commas till we get to the arg we want. while( index-- ) { // If this arg is quoted, then go to closing quote. offset = advanceToEndOfQuotedArg( args, offset, argLen); // Find next comma. offset = temp.FindChar( ',', offset ); if ( offset == kNotFound ) { // No more commas, give up. aString = args; return; } } // The desired argument starts just past the preceding comma, // which offset points to, and extends until the following // comma (or the end of the string). // // Since the argument might be enclosed in quotes, we need to // deal with that before searching for the terminating comma. // We advance offset so it ends up pointing to the start of // the argument we want. int32_t end = advanceToEndOfQuotedArg( args, offset++, argLen ); // Find next comma (or end of string). end = temp.FindChar( ',', end ); if ( end == kNotFound ) { // Arg is the rest of the string. end = argLen; } // Extract result. aString.Assign( args + offset, end - offset ); } return; } // Utility to parse out argument from a DDE item string. void nsNativeAppSupportOS2::ParseDDEArg( HSZ args, int index, nsCString& aString) { DWORD argLen = WinDdeQueryString( args, NULL, NULL, CP_WINANSI ); // there wasn't any string, so return empty string if ( !argLen ) return; nsAutoCString temp; // Ensure result's buffer is sufficiently big. temp.SetLength( argLen ); // Now get the string contents. WinDdeQueryString( args, temp.BeginWriting(), temp.Length(), CP_WINANSI ); // Parse out the given arg. ParseDDEArg(temp.get(), index, aString); return; } void nsNativeAppSupportOS2::ActivateLastWindow() { nsCOMPtr navWin; GetMostRecentWindow( NS_LITERAL_STRING("navigator:browser").get(), getter_AddRefs( navWin ) ); if ( navWin ) // Activate that window. activateWindow( navWin ); else // Need to create a Navigator window, then. OpenBrowserWindow(); } HDDEDATA nsNativeAppSupportOS2::CreateDDEData( DWORD value ) { return CreateDDEData( (LPBYTE)&value, sizeof value ); } HDDEDATA nsNativeAppSupportOS2::CreateDDEData( LPBYTE value, DWORD len ) { HDDEDATA result = WinDdeCreateDataHandle( value, len, 0, mApplication, CF_TEXT, 0 ); return result; } void nsNativeAppSupportOS2::HandleCommandLine(const char* aCmdLineString, nsIFile* aWorkingDir, uint32_t aState) { nsresult rv; int justCounting = 1; char **argv = 0; // Flags, etc. int init = 1; int between, quoted, bSlashCount; int argc; const char *p; nsAutoCString arg; nsCOMPtr cmdLine (do_CreateInstance("@mozilla.org/toolkit/command-line;1")); if (!cmdLine) { NS_ERROR("Couldn't create command line!"); return; } // We loop if we've not finished the second pass through. while ( 1 ) { // Initialize if required. if ( init ) { p = aCmdLineString; between = 1; argc = quoted = bSlashCount = 0; init = 0; } if ( between ) { // We are traversing whitespace between args. // Check for start of next arg. if ( *p != 0 && !isspace( *p ) ) { // Start of another arg. between = 0; arg = ""; switch ( *p ) { case '\\': // Count the backslash. bSlashCount = 1; break; case '"': // Remember we're inside quotes. quoted = 1; break; default: // Add character to arg. arg += *p; break; } } else { // Another space between args, ignore it. } } else { // We are processing the contents of an argument. // Check for whitespace or end. // if the argument we are parsing is a mailto url then all // of the remaining command line data needs to be part of // the mailto url even if it has spaces. See Bug #231032 nsDependentCString mailtoUrlScheme (kMailtoUrlScheme); if ( *p == 0 || ( !quoted && isspace( *p ) && !StringBeginsWith(arg, mailtoUrlScheme, nsCaseInsensitiveCStringComparator()) ) ) { // Process pending backslashes (interpret them // literally since they're not followed by a "). while( bSlashCount ) { arg += '\\'; bSlashCount--; } // End current arg. if ( !justCounting ) { argv[argc] = new char[ arg.Length() + 1 ]; strcpy( argv[argc], arg.get() ); } argc++; // We're now between args. between = 1; } else { // Still inside argument, process the character. switch ( *p ) { case '"': // First, digest preceding backslashes (if any). while ( bSlashCount > 1 ) { // Put one backsplash in arg for each pair. arg += '\\'; bSlashCount -= 2; } if ( bSlashCount ) { // Quote is literal. arg += '"'; bSlashCount = 0; } else { // Quote starts or ends a quoted section. if ( quoted ) { // Check for special case of consecutive double // quotes inside a quoted section. if ( *(p+1) == '"' ) { // This implies a literal double-quote. Fake that // out by causing next double-quote to look as // if it was preceded by a backslash. bSlashCount = 1; } else { quoted = 0; } } else { quoted = 1; } } break; case '\\': // Add to count. bSlashCount++; break; default: // Accept any preceding backslashes literally. while ( bSlashCount ) { arg += '\\'; bSlashCount--; } // Just add next char to the current arg. arg += *p; break; } } } // Check for end of input. if ( *p ) { // Go to next character. p++; } else { // If on first pass, go on to second. if ( justCounting ) { // Allocate argv array. argv = new char*[ argc ]; // Start second pass justCounting = 0; init = 1; } else { // Quit. break; } } } rv = cmdLine->Init(argc, argv, aWorkingDir, aState); // if these OS/2-specific flags aren't removed, // any URL following them will be ignored bool found; cmdLine->HandleFlag(NS_LITERAL_STRING("console"), false, &found); cmdLine->HandleFlag(NS_LITERAL_STRING("dde"), false, &found); // Cleanup. while ( argc ) { delete [] argv[ --argc ]; } delete [] argv; if (NS_FAILED(rv)) { NS_ERROR("Error initializing command line."); return; } cmdLine->Run(); } nsresult nsNativeAppSupportOS2::OpenWindow( const char*urlstr, const char *args ) { nsresult rv = NS_ERROR_FAILURE; nsCOMPtr wwatch(do_GetService(NS_WINDOWWATCHER_CONTRACTID)); nsCOMPtr sarg(do_CreateInstance(NS_SUPPORTS_CSTRING_CONTRACTID)); if (sarg) sarg->SetData(nsDependentCString(args)); if (wwatch && sarg) { nsCOMPtr newWindow; rv = wwatch->OpenWindow(0, urlstr, "_blank", "chrome,dialog=no,all", sarg, getter_AddRefs(newWindow)); #if MOZ_DEBUG_DDE } else { printf("Get WindowWatcher (or create string) failed\n"); #endif } return rv; } HWND hwndForDOMWindow( nsISupports *window ) { nsCOMPtr pidomwindow( do_QueryInterface(window) ); if ( !pidomwindow ) { return 0; } nsCOMPtr ppBaseWindow = do_QueryInterface( pidomwindow->GetDocShell() ); if ( !ppBaseWindow ) { return 0; } nsCOMPtr ppWidget; ppBaseWindow->GetMainWidget( getter_AddRefs( ppWidget ) ); return (HWND)( ppWidget->GetNativeData( NS_NATIVE_WIDGET ) ); } static const char sJSStackContractID[] = "@mozilla.org/js/xpc/ContextStack;1"; class SafeJSContext { public: SafeJSContext(); ~SafeJSContext(); nsresult Push(); JSContext *get() { return mContext; } protected: nsCOMPtr mService; JSContext *mContext; }; SafeJSContext::SafeJSContext() : mContext(nullptr) { } SafeJSContext::~SafeJSContext() { JSContext *cx; nsresult rv; if(mContext) { rv = mService->Pop(&cx); NS_ASSERTION(NS_SUCCEEDED(rv) && cx == mContext, "JSContext push/pop mismatch"); } } nsresult SafeJSContext::Push() { if (mContext) // only once return NS_ERROR_FAILURE; mService = do_GetService(sJSStackContractID); if (mService) { JSContext* cx = mService->GetSafeJSContext(); if (cx && NS_SUCCEEDED(mService->Push(cx))) { // Save cx in mContext to indicate need to pop. mContext = cx; } } return mContext ? NS_OK : NS_ERROR_FAILURE; } // As of Jan, 2005, most of the code in this method is pointless and // will never be used. It is only called by ActivateLastWindow() and // only when there is no existing window. Consequently, the first test // below [if ( !navWin )] will always fail, bypassing everything in the // dummy do..while() loop. Given that this file is largely a port of // the Win32 version, it is left in place to maintain concurrency. nsresult nsNativeAppSupportOS2::OpenBrowserWindow() { nsresult rv = NS_OK; // Open the argument URL in the most recently used Navigator window. // If there is no Nav window, open a new one. // If at all possible, hand the request off to the most recent // browser window. nsCOMPtr navWin; GetMostRecentWindow( NS_LITERAL_STRING( "navigator:browser" ).get(), getter_AddRefs( navWin ) ); // This isn't really a loop. We just use "break" statements to fall // out to the OpenWindow call when things go awry. do { // If caller requires a new window, then don't use an existing one. if ( !navWin ) { // Have to open a new one. break; } nsCOMPtr bwin; { // scope a bunch of temporary cruft used to generate bwin nsCOMPtr navNav( do_GetInterface( navWin ) ); nsCOMPtr navItem( do_QueryInterface( navNav ) ); if ( navItem ) { nsCOMPtr rootItem; navItem->GetRootTreeItem( getter_AddRefs( rootItem ) ); nsCOMPtr rootWin( do_GetInterface( rootItem ) ); nsCOMPtr chromeWin(do_QueryInterface(rootWin)); if ( chromeWin ) chromeWin->GetBrowserDOMWindow( getter_AddRefs ( bwin ) ); } } if ( bwin ) { nsCOMPtr uri; NS_NewURI( getter_AddRefs( uri ), NS_LITERAL_CSTRING("about:blank"), 0, 0 ); if ( uri ) { nsCOMPtr container; rv = bwin->OpenURI( uri, 0, nsIBrowserDOMWindow::OPEN_DEFAULTWINDOW, nsIBrowserDOMWindow::OPEN_EXTERNAL, getter_AddRefs( container ) ); if ( NS_SUCCEEDED( rv ) ) return NS_OK; } } NS_ERROR("failed to hand off external URL to extant window"); } while ( false ); // open a new window if caller requested it or if anything above failed char* argv[] = { 0 }; nsCOMPtr cmdLine (do_CreateInstance("@mozilla.org/toolkit/command-line;1")); NS_ENSURE_TRUE(cmdLine, NS_ERROR_FAILURE); rv = cmdLine->Init(0, argv, nullptr, nsICommandLine::STATE_REMOTE_EXPLICIT); NS_ENSURE_SUCCESS(rv, rv); return cmdLine->Run(); } // This is a public function called by nsAppRunner.cpp. Its primary // purpose is to determine if any commandline options require a VIO // ("console") window. If so and one isn't present, it will restart // the app in a VIO session. It is intended to be called as early as // possible during startup and before any other commandline processing. // It returns TRUE if the current instance should continue running and // FALSE if it should terminate upon this function's return. bool StartOS2App(int aArgc, char **aArgv) { bool rv = true; PPIB ppib; PTIB ptib; DosGetInfoBlocks(&ptib, &ppib); // if this isn't a PM session, reset the session type to enable use // of PM functions; if it is PM, see if a VIO session is required if (ppib->pib_ultype != SSF_TYPE_PM) ppib->pib_ultype = SSF_TYPE_PM; else { for (int i = 1; i < aArgc; i++ ) { char *arg = aArgv[i]; if (*arg != '-' && *arg != '/') continue; arg++; if (stricmp("?", arg) == 0 || stricmp("h", arg) == 0 || stricmp("v", arg) == 0 || stricmp("help", arg) == 0 || stricmp("version", arg) == 0 || stricmp("console", arg) == 0) { rv = false; break; } } } // if the session type is OK, increase the number of // file handles available to the app, then exit if (rv) { ULONG ulMaxFH = 0; LONG ulReqCount = 0; DosSetRelMaxFH(&ulReqCount, &ulMaxFH); if (ulMaxFH < 256) DosSetMaxFH(256); return rv; } // the app has to be restarted in a VIO session char szErrObj[64] = ""; STARTDATA x; memset(&x, 0, sizeof(x)); x.Length = sizeof(x); x.PgmTitle = (PSZ)gAppData->name; x.InheritOpt = SSF_INHERTOPT_PARENT; x.SessionType = SSF_TYPE_WINDOWABLEVIO; x.PgmControl = SSF_CONTROL_NOAUTOCLOSE; x.ObjectBuffer = szErrObj; x.ObjectBuffLen = sizeof(szErrObj); // the f/q exename is the string preceding ppib->pib_pchcmd; // the original commandline is the string following it char * ptr = ppib->pib_pchcmd - 2; while (*ptr) ptr--; x.PgmName = ptr + 1; x.PgmInputs = strchr(ppib->pib_pchcmd, 0) + 1; // restart the app; if this session is in the background, trying // to start in the foreground will produce an error, but the app // will still start; if DosStartSession has a real failure, forget // the console and let the current instance keep running ULONG ulSession; PID pid; ULONG rc = DosStartSession(&x, &ulSession, &pid); if (rc && rc != ERROR_SMG_START_IN_BACKGROUND) rv = true; return rv; }