Code:
/ 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / clr / src / ManagedLibraries / Security / System / Security / Cryptography / X509 / X509UI.cs / 1305376 / X509UI.cs
// ==++== // // Copyright (c) Microsoft Corporation. All rights reserved. // // ==--== //[....] // // // X509UI.cs // namespace System.Security.Cryptography.X509Certificates { using System; using System.Globalization; using System.Runtime.InteropServices; using System.Security.Cryptography; using System.Security.Permissions; public enum X509SelectionFlag { SingleSelection = 0x00, MultiSelection = 0x01 } [System.Security.Permissions.HostProtection(MayLeakOnAbort = true)] public static class X509Certificate2UI { [SecuritySafeCritical] public static void DisplayCertificate (X509Certificate2 certificate) { if (certificate == null) throw new ArgumentNullException("certificate"); DisplayX509Certificate(X509Utils.GetCertContext(certificate), IntPtr.Zero); } [SecurityCritical] public static void DisplayCertificate (X509Certificate2 certificate, IntPtr hwndParent) { if (certificate == null) throw new ArgumentNullException("certificate"); DisplayX509Certificate(X509Utils.GetCertContext(certificate), hwndParent); } public static X509Certificate2Collection SelectFromCollection (X509Certificate2Collection certificates, string title, string message, X509SelectionFlag selectionFlag) { return SelectFromCollectionHelper(certificates, title, message, selectionFlag, IntPtr.Zero); } [SecurityCritical] public static X509Certificate2Collection SelectFromCollection (X509Certificate2Collection certificates, string title, string message, X509SelectionFlag selectionFlag, IntPtr hwndParent) { return SelectFromCollectionHelper(certificates, title, message, selectionFlag, hwndParent); } [SecurityCritical] private static void DisplayX509Certificate (SafeCertContextHandle safeCertContext, IntPtr hwndParent) { if (safeCertContext.IsInvalid) throw new CryptographicException(SecurityResources.GetResourceString("Cryptography_InvalidHandle"), "safeCertContext"); int dwErrorCode = CAPI.ERROR_SUCCESS; // Initialize view structure. CAPI.CRYPTUI_VIEWCERTIFICATE_STRUCTW ViewInfo = new CAPI.CRYPTUI_VIEWCERTIFICATE_STRUCTW(); ViewInfo.dwSize = (uint) Marshal.SizeOf(ViewInfo); ViewInfo.hwndParent = hwndParent; ViewInfo.dwFlags = 0; ViewInfo.szTitle = null; ViewInfo.pCertContext = safeCertContext.DangerousGetHandle(); ViewInfo.rgszPurposes = IntPtr.Zero; ViewInfo.cPurposes = 0; ViewInfo.pCryptProviderData = IntPtr.Zero; ViewInfo.fpCryptProviderDataTrustedUsage = false; ViewInfo.idxSigner = 0; ViewInfo.idxCert = 0; ViewInfo.fCounterSigner = false; ViewInfo.idxCounterSigner = 0; ViewInfo.cStores = 0; ViewInfo.rghStores = IntPtr.Zero; ViewInfo.cPropSheetPages = 0; ViewInfo.rgPropSheetPages = IntPtr.Zero; ViewInfo.nStartPage = 0; // View the certificate if (!CAPI.CryptUIDlgViewCertificateW(ViewInfo, IntPtr.Zero)) dwErrorCode = Marshal.GetLastWin32Error(); // CryptUIDlgViewCertificateW returns ERROR_CANCELLED if the user closes // the window through the x button or by pressing CANCEL, so ignore this error code if (dwErrorCode != CAPI.ERROR_SUCCESS && dwErrorCode != CAPI.ERROR_CANCELLED) throw new CryptographicException(Marshal.GetLastWin32Error()); } [SecuritySafeCritical] private static X509Certificate2Collection SelectFromCollectionHelper (X509Certificate2Collection certificates, string title, string message, X509SelectionFlag selectionFlag, IntPtr hwndParent) { if (certificates == null) throw new ArgumentNullException("certificates"); if (selectionFlag < X509SelectionFlag.SingleSelection || selectionFlag > X509SelectionFlag.MultiSelection) throw new ArgumentException(String.Format(CultureInfo.CurrentCulture, SecurityResources.GetResourceString("Arg_EnumIllegalVal"), "selectionFlag")); // // We need to Assert all StorePermission flags since this is a memory store and we want // semi-trusted code to be able to select certificates from a memory store. // StorePermission sp = new StorePermission(StorePermissionFlags.AllFlags); sp.Assert(); using (SafeCertStoreHandle safeSourceStoreHandle = X509Utils.ExportToMemoryStore(certificates)) using (SafeCertStoreHandle safeTargetStoreHandle = SelectFromStore(safeSourceStoreHandle, title, message, selectionFlag, hwndParent)) { return X509Utils.GetCertificates(safeTargetStoreHandle); } } [SecurityCritical] private static unsafe SafeCertStoreHandle SelectFromStore (SafeCertStoreHandle safeSourceStoreHandle, string title, string message, X509SelectionFlag selectionFlags, IntPtr hwndParent) { int dwErrorCode = CAPI.ERROR_SUCCESS; // First, create a memory store SafeCertStoreHandle safeCertStoreHandle = CAPI.CertOpenStore((IntPtr) CAPI.CERT_STORE_PROV_MEMORY, CAPI.X509_ASN_ENCODING | CAPI.PKCS_7_ASN_ENCODING, IntPtr.Zero, 0, null); if (safeCertStoreHandle == null || safeCertStoreHandle.IsInvalid) throw new CryptographicException(Marshal.GetLastWin32Error()); CAPI.CRYPTUI_SELECTCERTIFICATE_STRUCTW csc = new CAPI.CRYPTUI_SELECTCERTIFICATE_STRUCTW(); // Older versions of CRYPTUI do not check the size correctly, // so always force it to the oldest version of the structure. csc.dwSize = (uint) Marshal.OffsetOf(typeof(CAPI.CRYPTUI_SELECTCERTIFICATE_STRUCTW), "hSelectedCertStore"); csc.hwndParent = hwndParent; csc.dwFlags = (uint) selectionFlags; csc.szTitle = title; csc.dwDontUseColumn = 0; csc.szDisplayString = message; csc.pFilterCallback = IntPtr.Zero; csc.pDisplayCallback = IntPtr.Zero; csc.pvCallbackData = IntPtr.Zero; csc.cDisplayStores = 1; IntPtr hSourceCertStore = safeSourceStoreHandle.DangerousGetHandle(); csc.rghDisplayStores = new IntPtr(&hSourceCertStore); csc.cStores = 0; csc.rghStores = IntPtr.Zero; csc.cPropSheetPages = 0; csc.rgPropSheetPages = IntPtr.Zero; csc.hSelectedCertStore = safeCertStoreHandle.DangerousGetHandle(); SafeCertContextHandle safeCertContextHandle = CAPI.CryptUIDlgSelectCertificateW(csc); if (safeCertContextHandle != null && !safeCertContextHandle.IsInvalid) { // Single select, so add it to our hCertStore SafeCertContextHandle ppStoreContext = SafeCertContextHandle.InvalidHandle; if (!CAPI.CertAddCertificateContextToStore(safeCertStoreHandle, safeCertContextHandle, CAPI.CERT_STORE_ADD_NEWER_INHERIT_PROPERTIES, ppStoreContext)) dwErrorCode = Marshal.GetLastWin32Error(); } if (dwErrorCode != CAPI.ERROR_SUCCESS) throw new CryptographicException(Marshal.GetLastWin32Error()); return safeCertStoreHandle; } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007.
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