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mcs/class/System/Mono.Btls/MonoBtlsSslCtx.cs
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260
mcs/class/System/Mono.Btls/MonoBtlsSslCtx.cs
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//
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// MonoBtlsSslCtx.cs
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//
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// Author:
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// Martin Baulig <martin.baulig@xamarin.com>
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//
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// Copyright (c) 2016 Xamarin Inc. (http://www.xamarin.com)
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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// THE SOFTWARE.
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#if SECURITY_DEP && MONO_FEATURE_BTLS
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using System;
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using System.Runtime.CompilerServices;
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using System.Runtime.InteropServices;
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#if MONOTOUCH
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using MonoTouch;
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#endif
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namespace Mono.Btls
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{
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class MonoBtlsSslCtx : MonoBtlsObject
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{
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internal class BoringSslCtxHandle : MonoBtlsHandle
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{
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public BoringSslCtxHandle (IntPtr handle)
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: base (handle, true)
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{
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}
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protected override bool ReleaseHandle ()
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{
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mono_btls_ssl_ctx_free (handle);
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return true;
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}
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}
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new internal BoringSslCtxHandle Handle {
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get { return (BoringSslCtxHandle)base.Handle; }
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}
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[DllImport (BTLS_DYLIB)]
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extern static IntPtr mono_btls_ssl_ctx_new ();
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[DllImport (BTLS_DYLIB)]
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extern static int mono_btls_ssl_ctx_free (IntPtr handle);
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[DllImport (BTLS_DYLIB)]
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extern static IntPtr mono_btls_ssl_ctx_up_ref (IntPtr handle);
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[DllImport (BTLS_DYLIB)]
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extern static void mono_btls_ssl_ctx_initialize (IntPtr handle, IntPtr instance);
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[DllImport (BTLS_DYLIB)]
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extern static void mono_btls_ssl_ctx_set_debug_bio (IntPtr handle, IntPtr bio);
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[DllImport (BTLS_DYLIB)]
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extern static void mono_btls_ssl_ctx_set_cert_verify_callback (IntPtr handle, IntPtr func, int cert_required);
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[DllImport (BTLS_DYLIB)]
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extern static void mono_btls_ssl_ctx_set_cert_select_callback (IntPtr handle, IntPtr func);
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[DllImport (BTLS_DYLIB)]
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extern static void mono_btls_ssl_ctx_set_min_version (IntPtr handle, int version);
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[DllImport (BTLS_DYLIB)]
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extern static void mono_btls_ssl_ctx_set_max_version (IntPtr handle, int version);
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[DllImport (BTLS_DYLIB)]
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extern static int mono_btls_ssl_ctx_is_cipher_supported (IntPtr handle, short value);
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[DllImport (BTLS_DYLIB)]
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extern static int mono_btls_ssl_ctx_set_ciphers (IntPtr handle, int count, IntPtr data, int allow_unsupported);
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[DllImport (BTLS_DYLIB)]
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extern static int mono_btls_ssl_ctx_set_verify_param (IntPtr handle, IntPtr param);
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delegate int NativeVerifyFunc (IntPtr instance, int preverify_ok, IntPtr ctx);
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delegate int NativeSelectFunc (IntPtr instance);
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NativeVerifyFunc verifyFunc;
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NativeSelectFunc selectFunc;
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IntPtr verifyFuncPtr;
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IntPtr selectFuncPtr;
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MonoBtlsVerifyCallback verifyCallback;
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MonoBtlsSelectCallback selectCallback;
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MonoBtlsX509Store store;
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GCHandle instance;
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IntPtr instancePtr;
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public MonoBtlsSslCtx ()
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: this (new BoringSslCtxHandle (mono_btls_ssl_ctx_new ()))
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{
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}
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internal MonoBtlsSslCtx (BoringSslCtxHandle handle)
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: base (handle)
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{
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instance = GCHandle.Alloc (this);
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instancePtr = GCHandle.ToIntPtr (instance);
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mono_btls_ssl_ctx_initialize (
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handle.DangerousGetHandle (), instancePtr);
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verifyFunc = NativeVerifyCallback;
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selectFunc = NativeSelectCallback;
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verifyFuncPtr = Marshal.GetFunctionPointerForDelegate (verifyFunc);
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selectFuncPtr = Marshal.GetFunctionPointerForDelegate (selectFunc);
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store = new MonoBtlsX509Store (Handle);
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}
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internal MonoBtlsSslCtx Copy ()
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{
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var copy = mono_btls_ssl_ctx_up_ref (Handle.DangerousGetHandle ());
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return new MonoBtlsSslCtx (new BoringSslCtxHandle (copy));
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}
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public MonoBtlsX509Store CertificateStore {
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get { return store; }
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}
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int VerifyCallback (bool preverify_ok, MonoBtlsX509StoreCtx ctx)
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{
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if (verifyCallback != null)
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return verifyCallback (ctx);
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return 0;
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}
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#if MONOTOUCH
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[MonoPInvokeCallback (typeof (NativeVerifyFunc))]
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#endif
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static int NativeVerifyCallback (IntPtr instance, int preverify_ok, IntPtr store_ctx)
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{
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var c = (MonoBtlsSslCtx)GCHandle.FromIntPtr (instance).Target;
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using (var ctx = new MonoBtlsX509StoreCtx (preverify_ok, store_ctx)) {
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try {
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return c.VerifyCallback (preverify_ok != 0, ctx);
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} catch (Exception ex) {
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c.SetException (ex);
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}
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}
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return 0;
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}
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int SelectCallback ()
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{
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if (selectCallback != null)
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return selectCallback ();
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return 1;
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}
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#if MONOTOUCH
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[MonoPInvokeCallback (typeof (NativeSelectFunc))]
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#endif
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static int NativeSelectCallback (IntPtr instance)
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{
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var c = (MonoBtlsSslCtx)GCHandle.FromIntPtr (instance).Target;
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try {
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return c.SelectCallback ();
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} catch (Exception ex) {
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c.SetException (ex);
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return 0;
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}
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}
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public void SetDebugBio (MonoBtlsBio bio)
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{
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CheckThrow ();
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mono_btls_ssl_ctx_set_debug_bio (Handle.DangerousGetHandle (), bio.Handle.DangerousGetHandle ());
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}
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public void SetVerifyCallback (MonoBtlsVerifyCallback callback, bool client_cert_required)
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{
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CheckThrow ();
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verifyCallback = callback;
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mono_btls_ssl_ctx_set_cert_verify_callback (
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Handle.DangerousGetHandle (), verifyFuncPtr,
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client_cert_required ? 1 : 0);
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}
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public void SetSelectCallback (MonoBtlsSelectCallback callback)
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{
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CheckThrow ();
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selectCallback = callback;
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mono_btls_ssl_ctx_set_cert_select_callback (
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Handle.DangerousGetHandle (), selectFuncPtr);
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}
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public void SetMinVersion (int version)
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{
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CheckThrow ();
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mono_btls_ssl_ctx_set_min_version (Handle.DangerousGetHandle (), version);
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}
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public void SetMaxVersion (int version)
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{
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CheckThrow ();
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mono_btls_ssl_ctx_set_max_version (Handle.DangerousGetHandle (), version);
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}
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public bool IsCipherSupported (short value)
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{
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CheckThrow ();
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return mono_btls_ssl_ctx_is_cipher_supported (Handle.DangerousGetHandle (), value) != 0;
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}
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public void SetCiphers (short[] ciphers, bool allow_unsupported)
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{
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CheckThrow ();
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var data = Marshal.AllocHGlobal (ciphers.Length * 2);
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try {
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Marshal.Copy (ciphers, 0, data, ciphers.Length);
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var ret = mono_btls_ssl_ctx_set_ciphers (
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Handle.DangerousGetHandle (),
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ciphers.Length, data, allow_unsupported ? 1 : 0);
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CheckError (ret > 0);
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} finally {
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Marshal.FreeHGlobal (data);
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}
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}
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public void SetVerifyParam (MonoBtlsX509VerifyParam param)
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{
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CheckThrow ();
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var ret = mono_btls_ssl_ctx_set_verify_param (
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Handle.DangerousGetHandle (),
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param.Handle.DangerousGetHandle ());
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CheckError (ret);
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}
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protected override void Close ()
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{
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if (store != null) {
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store.Dispose ();
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store = null;
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}
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if (instance.IsAllocated)
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instance.Free ();
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base.Close ();
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}
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}
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}
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#endif
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