mapi32: Scan registry for MAPI providers and load them.

dlls/mapi32/Makefile.in

@@ -4,7 +4,7 @@ SRCDIR    = @srcdir@
 VPATH     = @srcdir@
 MODULE    = mapi32.dll
 IMPORTLIB = mapi32
-IMPORTS   = uuid shlwapi shell32 kernel32
+IMPORTS   = uuid shlwapi shell32 advapi32 kernel32
 
 C_SRCS = \
 	imalloc.c \

dlls/mapi32/mapi32_main.c

@@ -1,7 +1,7 @@
 /*
  *             MAPI basics
  *
- * Copyright 2001 CodeWeavers Inc.
+ * Copyright 2001, 2009 CodeWeavers Inc.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public
@@ -29,6 +29,7 @@
 #include "mapiform.h"
 #include "mapi.h"
 #include "wine/debug.h"
+#include "util.h"
 
 WINE_DEFAULT_DEBUG_CHANNEL(mapi);
 
@@ -45,9 +46,11 @@ BOOL WINAPI DllMain(HINSTANCE hinstDLL, DWORD fdwReason, LPVOID fImpLoad)
     {
     case DLL_PROCESS_ATTACH:
         DisableThreadLibraryCalls(hinstDLL);
+        load_mapi_providers();
         break;
     case DLL_PROCESS_DETACH:
 	TRACE("DLL_PROCESS_DETACH: %d objects remaining\n", MAPI_ObjectCount);
+        unload_mapi_providers();
 	break;
     }
     return TRUE;

dlls/mapi32/util.c

@@ -2,6 +2,7 @@
  * MAPI Utility functions
  *
  * Copyright 2004 Jon Griffiths
+ * Copyright 2009 Owen Rudge for CodeWeavers
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public
@@ -37,6 +38,7 @@
 #include "mapival.h"
 #include "xcmc.h"
 #include "msi.h"
+#include "util.h"
 
 WINE_DEFAULT_DEBUG_CHANNEL(mapi);
 
@@ -903,3 +905,145 @@ HRESULT WINAPI HrQueryAllRows(LPMAPITABLE lpTable, LPSPropTagArray lpPropTags,
     *lppRows = NULL;
     return MAPI_E_CALL_FAILED;
 }
+
+static HMODULE mapi_provider;
+static HMODULE mapi_ex_provider;
+
+/**************************************************************************
+ *  load_mapi_provider
+ *
+ * Attempts to load a MAPI provider from the specified registry key.
+ *
+ * Returns a handle to the loaded module in `mapi_provider' if successful.
+ */
+static void load_mapi_provider(HKEY hkeyMail, LPCWSTR valueName, HMODULE *mapi_provider)
+{
+    static const WCHAR mapi32_dll[] = {'m','a','p','i','3','2','.','d','l','l',0 };
+
+    DWORD dwType, dwLen = 0;
+    LPWSTR dllPath;
+
+    /* Check if we have a value set for DLLPath */
+    if ((RegQueryValueExW(hkeyMail, valueName, NULL, &dwType, NULL, &dwLen) == ERROR_SUCCESS) &&
+        ((dwType == REG_SZ) || (dwType == REG_EXPAND_SZ)) && (dwLen > 0))
+    {
+        dllPath = HeapAlloc(GetProcessHeap(), 0, dwLen);
+
+        if (dllPath)
+        {
+            RegQueryValueExW(hkeyMail, valueName, NULL, NULL, (LPBYTE)dllPath, &dwLen);
+
+            /* Check that this value doesn't refer to mapi32.dll (eg, as Outlook does) */
+            if (lstrcmpiW(dllPath, mapi32_dll) != 0)
+            {
+                if (dwType == REG_EXPAND_SZ)
+                {
+                    DWORD dwExpandLen;
+                    LPWSTR dllPathExpanded;
+
+                    /* Expand the path if necessary */
+                    dwExpandLen = ExpandEnvironmentStringsW(dllPath, NULL, 0);
+                    dllPathExpanded = HeapAlloc(GetProcessHeap(), 0, sizeof(WCHAR) * dwExpandLen + 1);
+
+                    if (dllPathExpanded)
+                    {
+                        ExpandEnvironmentStringsW(dllPath, dllPathExpanded, dwExpandLen + 1);
+
+                        HeapFree(GetProcessHeap(), 0, dllPath);
+                        dllPath = dllPathExpanded;
+                    }
+                }
+
+                /* Load the DLL */
+                TRACE("loading %s\n", debugstr_w(dllPath));
+                *mapi_provider = LoadLibraryW(dllPath);
+            }
+
+            HeapFree(GetProcessHeap(), 0, dllPath);
+        }
+    }
+}
+
+/**************************************************************************
+ *  load_mapi_providers
+ *
+ * Scans the registry for MAPI providers and attempts to load a Simple and
+ * Extended MAPI library.
+ *
+ * Returns TRUE if at least one library loaded, FALSE otherwise.
+ */
+void load_mapi_providers(void)
+{
+    static const WCHAR regkey_mail[] = {
+        'S','o','f','t','w','a','r','e','\\','C','l','i','e','n','t','s','\\',
+        'M','a','i','l',0 };
+
+    static const WCHAR regkey_dllpath[] = {'D','L','L','P','a','t','h',0 };
+    static const WCHAR regkey_dllpath_ex[] = {'D','L','L','P','a','t','h','E','x',0 };
+    static const WCHAR regkey_backslash[] = { '\\', 0 };
+
+    HKEY hkeyMail;
+    DWORD dwType, dwLen = 0;
+    LPWSTR appName = NULL, appKey = NULL;
+
+    TRACE("()\n");
+
+    /* Open the Mail key */
+    if (RegOpenKeyExW(HKEY_LOCAL_MACHINE, regkey_mail, 0, KEY_READ, &hkeyMail) != ERROR_SUCCESS)
+        return;
+
+    /* Check if we have a default value set, and the length of it */
+    if ((RegQueryValueExW(hkeyMail, NULL, NULL, &dwType, NULL, &dwLen) != ERROR_SUCCESS) ||
+        !((dwType == REG_SZ) || (dwType == REG_EXPAND_SZ)) || (dwLen == 0))
+        goto cleanUp;
+
+    appName = HeapAlloc(GetProcessHeap(), 0, dwLen);
+
+    if (!appName)
+        goto cleanUp;
+
+    /* Get the value, and get the path to the app key */
+    RegQueryValueExW(hkeyMail, NULL, NULL, NULL, (LPBYTE)appName, &dwLen);
+
+    TRACE("appName: %s\n", debugstr_w(appName));
+
+    appKey = HeapAlloc(GetProcessHeap(), 0, sizeof(WCHAR) * (lstrlenW(regkey_mail) +
+        lstrlenW(regkey_backslash) + lstrlenW(appName)));
+
+    if (!appKey)
+        goto cleanUp;
+
+    lstrcpyW(appKey, regkey_mail);
+    lstrcatW(appKey, regkey_backslash);
+    lstrcatW(appKey, appName);
+
+    RegCloseKey(hkeyMail);
+
+    TRACE("appKey: %s\n", debugstr_w(appKey));
+
+    /* Open the app's key */
+    if (RegOpenKeyExW(HKEY_LOCAL_MACHINE, appKey, 0, KEY_READ, &hkeyMail) != ERROR_SUCCESS)
+        return;
+
+    /* Try to load the providers */
+    load_mapi_provider(hkeyMail, regkey_dllpath, &mapi_provider);
+    load_mapi_provider(hkeyMail, regkey_dllpath_ex, &mapi_ex_provider);
+
+cleanUp:
+    RegCloseKey(hkeyMail);
+    HeapFree(GetProcessHeap(), 0, appKey);
+    HeapFree(GetProcessHeap(), 0, appName);
+}
+
+/**************************************************************************
+ *  unload_mapi_providers
+ *
+ * Unloads any loaded MAPI libraries.
+ */
+void unload_mapi_providers(void)
+{
+    TRACE("()\n");
+
+    FreeLibrary(mapi_provider);
+    FreeLibrary(mapi_ex_provider);
+}

dlls/mapi32/util.h

@@ -0,0 +1,28 @@
+/*
+ *             MAPI utility header file
+ *
+ * Copyright 2009 Owen Rudge for CodeWeavers
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
+ */
+
+#ifndef _MAPI_UTIL_H
+
+#define _MAPI_UTIL_H
+
+extern void load_mapi_providers(void);
+extern void unload_mapi_providers(void);
+
+#endif