337 lines
8.8 KiB
C++
337 lines
8.8 KiB
C++
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//
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// User or remote site invokes applet
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//
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#include "precomp.h"
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#include "appldr.h"
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#include "cuserdta.hpp"
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#include "csap.h"
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#define count_of(array) (sizeof(array) / sizeof(array[0]))
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static CRITICAL_SECTION g_csAppLdrInfo;
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static AppLoaderInfo g_aAppLoaderInfo[APPLET_LAST];
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static BOOL g_fAppLdrInitialized = FALSE;
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const static CHAR *g_fnAppletDLL[APPLET_LAST] = {"nmwb.dll", "nmft.dll", "nmchat.dll"};
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// Chat session key
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static const GUID guidNM2Chat = { 0x340f3a60, 0x7067, 0x11d0,
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{ 0xa0, 0x41, 0x44, 0x45, 0x53, 0x54, 0x0, 0x0 } };
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#define CHAT_KEY_SIZE 25
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extern struct Key CHAT_APP_PROTO_KEY;
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// NetMeeting/UI, T.120
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T120Error WINAPI T120_LoadApplet
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(
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APPLET_ID nAppId,
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BOOL flocal,
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T120ConfID nConfId,
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BOOL fNoUI,
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LPSTR pszCmdLine
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)
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{
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T120Error rc = T120_NO_ERROR;
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LPFN_CREATE_APPLET_LOADER_INTERFACE pfnCreateInterface;
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if (nAppId >= APPLET_LAST)
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{
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ERROR_OUT(("T120_LoadApplet: invalid applet ID=%u", nAppId));
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return T120_INVALID_PARAMETER;
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}
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//
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// Check policies. Launch & auto-launch not allowed if corp has
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// disabled applet.
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//
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RegEntry rePol(POLICIES_KEY, HKEY_CURRENT_USER);
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switch (nAppId)
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{
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case APPLET_ID_WB:
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if (rePol.GetNumber(REGVAL_POL_NO_NEWWHITEBOARD, DEFAULT_POL_NO_NEWWHITEBOARD))
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{
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WARNING_OUT(("New WB disabled by policy, not starting"));
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return GCC_NO_SUCH_APPLICATION;
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}
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break;
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case APPLET_ID_FT:
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if (rePol.GetNumber(REGVAL_POL_NO_FILETRANSFER_SEND, DEFAULT_POL_NO_FILETRANSFER_SEND) &&
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rePol.GetNumber(REGVAL_POL_NO_FILETRANSFER_RECEIVE, DEFAULT_POL_NO_FILETRANSFER_RECEIVE))
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{
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WARNING_OUT(("FT disabled by policy, not starting"));
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return GCC_NO_SUCH_APPLICATION;
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}
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break;
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case APPLET_ID_CHAT:
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if (rePol.GetNumber(REGVAL_POL_NO_CHAT, DEFAULT_POL_NO_CHAT))
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{
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WARNING_OUT(("Chat disabled by policy, not starting"));
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return GCC_NO_SUCH_APPLICATION;
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}
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break;
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}
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::EnterCriticalSection(&g_csAppLdrInfo);
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if (NULL != g_aAppLoaderInfo[nAppId].hLibApplet)
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{
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switch (g_aAppLoaderInfo[nAppId].eStatus)
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{
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case APPLET_CLOSING:
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case APPLET_WORK_THREAD_EXITED:
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WARNING_OUT(("T120_LoadApplet: applet is closing or work thread exited"));
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rc = GCC_APPLET_EXITING;
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break;
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default:
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if (APPLDR_NO_ERROR == g_aAppLoaderInfo[nAppId].pIAppLoader->AppletInvoke(flocal, nConfId, pszCmdLine))
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{
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g_aAppLoaderInfo[nAppId].cLoads++;
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}
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// rc = T120_NO_ERROR;
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break;
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}
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goto MyExit;
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}
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g_aAppLoaderInfo[nAppId].hLibApplet = ::LoadLibrary(g_fnAppletDLL[nAppId]);
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if (NULL != g_aAppLoaderInfo[nAppId].hLibApplet)
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{
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pfnCreateInterface = (LPFN_CREATE_APPLET_LOADER_INTERFACE)
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::GetProcAddress(g_aAppLoaderInfo[nAppId].hLibApplet,
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CREATE_APPLET_LOADER_INTERFACE);
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if (NULL != pfnCreateInterface)
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{
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//g_aAppLoaderInfo[nAppId].pIAppLoader = (IAppletLoader*)(*pfnCreateInterface)();
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(*pfnCreateInterface)(&g_aAppLoaderInfo[nAppId].pIAppLoader);
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if (NULL != g_aAppLoaderInfo[nAppId].pIAppLoader)
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{
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if (APPLDR_NO_ERROR == g_aAppLoaderInfo[nAppId].pIAppLoader->AppletStartup(fNoUI))
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{
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if (APPLDR_NO_ERROR == g_aAppLoaderInfo[nAppId].pIAppLoader->AppletInvoke(flocal, nConfId, pszCmdLine))
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{
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g_aAppLoaderInfo[nAppId].cLoads++;
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// rc = T120_NO_ERROR;
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goto MyExit;
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}
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else
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{
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ERROR_OUT(("T120_LoadApplet: cannot invoke applet(%s), flocal=%u, nConfID=%u",
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g_fnAppletDLL[nAppId], flocal, nConfId));
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}
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}
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else
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{
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ERROR_OUT(("T120_LoadApplet: cannot start applet(%s)", g_fnAppletDLL[nAppId]));
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}
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g_aAppLoaderInfo[nAppId].pIAppLoader->ReleaseInterface();
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g_aAppLoaderInfo[nAppId].pIAppLoader = NULL;
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}
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else
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{
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ERROR_OUT(("T120_LoadApplet: Entry function of %s failed.\n", g_fnAppletDLL[nAppId]));
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}
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}
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else
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{
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WARNING_OUT(("T120_LoadApplet: Can't find entry point of %s.\n", g_fnAppletDLL[nAppId]));
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}
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::FreeLibrary(g_aAppLoaderInfo[nAppId].hLibApplet);
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g_aAppLoaderInfo[nAppId].hLibApplet = NULL;
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}
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else
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{
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ERROR_OUT(("T120_LoadApplet: Can't open DLL %s, err %d.\n", g_fnAppletDLL[nAppId], GetLastError()));
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}
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rc = GCC_NO_SUCH_APPLICATION;
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MyExit:
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::LeaveCriticalSection(&g_csAppLdrInfo);
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return rc;
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}
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// NetMeeting/UI shutdown
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T120Error WINAPI
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T120_CloseApplet(APPLET_ID nAppId, BOOL fNowRegardlessRefCount, BOOL fSync, DWORD dwTimeout)
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{
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if (nAppId< APPLET_LAST)
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{
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if (g_fAppLdrInitialized)
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{
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::EnterCriticalSection(&g_csAppLdrInfo);
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IAppletLoader *pIAppLdr = g_aAppLoaderInfo[nAppId].pIAppLoader;
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if (NULL != pIAppLdr)
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{
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ASSERT(g_aAppLoaderInfo[nAppId].cLoads > 0);
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g_aAppLoaderInfo[nAppId].cLoads --;
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if ((! fNowRegardlessRefCount) && g_aAppLoaderInfo[nAppId].cLoads > 0)
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{
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pIAppLdr = NULL; // do not free the library
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}
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}
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::LeaveCriticalSection(&g_csAppLdrInfo);
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if (NULL != pIAppLdr)
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{
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// AppletCleanup() must be outside of the critical section
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// because applet worker thread will call AppletStatus() before
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// exiting its worker thread.
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switch (pIAppLdr->AppletCleanup(5000)) // always synchronous shutdown
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{
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case APPLDR_NO_ERROR :
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// we are closing this applet
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g_aAppLoaderInfo[nAppId].eStatus = APPLET_CLOSING;
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// it is safe to unload the library
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::FreeLibrary(g_aAppLoaderInfo[nAppId].hLibApplet);
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g_aAppLoaderInfo[nAppId].hLibApplet = NULL;
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break;
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case APPLDR_CANCEL_EXIT:
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//
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// The app didn't want to be unloaded
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//
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::EnterCriticalSection(&g_csAppLdrInfo);
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g_aAppLoaderInfo[nAppId].cLoads++;
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g_aAppLoaderInfo[nAppId].pIAppLoader = pIAppLdr;
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::LeaveCriticalSection(&g_csAppLdrInfo);
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return GCC_APPLET_CANCEL_EXIT;
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default:
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break;
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}
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}
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}
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return T120_NO_ERROR;
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}
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else
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{
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ERROR_OUT(("T120_CloseApplet: invalid applet ID=%u", nAppId));
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}
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return T120_INVALID_PARAMETER;
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}
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T120Error WINAPI
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T120_QueryApplet(APPLET_ID nAppId, APPLET_QUERY_ID eQueryId)
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{
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if (nAppId< APPLET_LAST)
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{
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if (g_fAppLdrInitialized)
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{
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::EnterCriticalSection(&g_csAppLdrInfo);
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IAppletLoader *pIAppLdr = g_aAppLoaderInfo[nAppId].pIAppLoader;
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::LeaveCriticalSection(&g_csAppLdrInfo);
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if (NULL != pIAppLdr)
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{
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if (APPLET_QUERY_NM2xNODE == eQueryId)
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{
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pIAppLdr->OnNM2xNodeJoin();
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}
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else if (APPLDR_CANCEL_EXIT == pIAppLdr->AppletQuery(eQueryId))
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{
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return GCC_APPLET_CANCEL_EXIT;
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}
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}
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}
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return T120_NO_ERROR;
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}
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else
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{
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ERROR_OUT(("T120_CloseApplet: invalid applet ID=%u", nAppId));
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}
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return T120_INVALID_PARAMETER;
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}
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// Applet itself
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T120Error WINAPI
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T120_AppletStatus(APPLET_ID nAppId, APPLET_STATUS status)
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{
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if (nAppId < APPLET_LAST)
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{
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if (g_fAppLdrInitialized)
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{
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::EnterCriticalSection(&g_csAppLdrInfo);
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g_aAppLoaderInfo[nAppId].eStatus = status;
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switch (status)
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{
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case APPLET_WORK_THREAD_EXITED:
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if (NULL != g_aAppLoaderInfo[nAppId].pIAppLoader)
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{
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g_aAppLoaderInfo[nAppId].pIAppLoader->ReleaseInterface();
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g_aAppLoaderInfo[nAppId].pIAppLoader = NULL;
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}
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break;
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case APPLET_LIBRARY_FREED:
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// clean up this entry
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::ZeroMemory(&g_aAppLoaderInfo[nAppId], sizeof(g_aAppLoaderInfo[0]));
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break;
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}
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::LeaveCriticalSection(&g_csAppLdrInfo);
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}
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return T120_NO_ERROR;
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}
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else
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{
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ERROR_OUT(("T120_AppletStatus: invalid applet ID=%u", nAppId));
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}
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return T120_INVALID_PARAMETER;
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}
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T120Error AppLdr_Initialize(void)
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{
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ASSERT(count_of(g_aAppLoaderInfo) == APPLET_LAST);
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::InitializeCriticalSection(&g_csAppLdrInfo);
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// clean all entries
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::ZeroMemory(g_aAppLoaderInfo, sizeof(g_aAppLoaderInfo));
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::CreateH221AppKeyFromGuid(CHAT_APP_PROTO_KEY.u.h221_non_standard.value,
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(GUID *)&guidNM2Chat );
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CHAT_APP_PROTO_KEY.choice = h221_non_standard_chosen;
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CHAT_APP_PROTO_KEY.u.h221_non_standard.length = CHAT_KEY_SIZE;
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g_fAppLdrInitialized = TRUE;
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return T120_NO_ERROR;
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}
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void AppLdr_Shutdown(void)
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{
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g_fAppLdrInitialized = FALSE;
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for (ULONG i = 0; i < APPLET_LAST; i++)
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{
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if (NULL != g_aAppLoaderInfo[i].pIAppLoader)
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{
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APPLDR_RESULT rc = g_aAppLoaderInfo[i].pIAppLoader->AppletCleanup(5000); // always synchronous shutdown
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ASSERT(APPLDR_NO_ERROR == rc);
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// it is safe to unload the library
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::FreeLibrary(g_aAppLoaderInfo[i].hLibApplet);
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g_aAppLoaderInfo[i].hLibApplet = NULL;
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}
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}
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// clean all entries
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::ZeroMemory(g_aAppLoaderInfo, sizeof(g_aAppLoaderInfo));
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::DeleteCriticalSection(&g_csAppLdrInfo);
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}
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