X509ChainElement.cs source code in C# .NET

                        Code:
                         / 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / fx / src / security / system / security / cryptography / x509 / X509ChainElement.cs / 1305376 / X509ChainElement.cs
                        
                        
                            // ==++== 
//
//   Copyright (c) Microsoft Corporation.  All rights reserved.
//
// ==--== 

// 
// X509ChainElement.cs 
//
 
namespace System.Security.Cryptography.X509Certificates {
    using System.Collections;
    using System.Runtime.InteropServices;
 
    public class X509ChainElement {
        private X509Certificate2 m_certificate; 
        private X509ChainStatus[] m_chainStatus; 
        private string m_description;
 
        private X509ChainElement () {}
        internal unsafe X509ChainElement (IntPtr pChainElement) {
            CAPI.CERT_CHAIN_ELEMENT chainElement = new CAPI.CERT_CHAIN_ELEMENT(Marshal.SizeOf(typeof(CAPI.CERT_CHAIN_ELEMENT)));
            uint cbSize = (uint) Marshal.ReadInt32(pChainElement); 
            if (cbSize > Marshal.SizeOf(chainElement))
                cbSize = (uint) Marshal.SizeOf(chainElement); 
            X509Utils.memcpy(pChainElement, new IntPtr(&chainElement), cbSize); 

            m_certificate = new X509Certificate2(chainElement.pCertContext); 
            if (chainElement.pwszExtendedErrorInfo == IntPtr.Zero)
                m_description = String.Empty;
            else
                m_description = Marshal.PtrToStringUni(chainElement.pwszExtendedErrorInfo); 

            // We give the user a reference to the array since we'll never access it. 
            if (chainElement.dwErrorStatus == 0) 
                m_chainStatus = new X509ChainStatus[0]; // empty array
            else 
                m_chainStatus = X509Chain.GetChainStatusInformation(chainElement.dwErrorStatus);
        }

        public X509Certificate2 Certificate { 
            get {
                return m_certificate; 
            } 
        }
 
        public X509ChainStatus[] ChainElementStatus {
            get {
                return m_chainStatus;
            } 
        }
 
        public string Information { 
            get {
                return m_description; 
            }
        }
    }
 
    public sealed class X509ChainElementCollection : ICollection {
        private X509ChainElement[] m_elements; 
 
        internal X509ChainElementCollection () {
            m_elements = new X509ChainElement[0]; 
        }

        internal unsafe X509ChainElementCollection (IntPtr pSimpleChain) {
            CAPI.CERT_SIMPLE_CHAIN simpleChain = new CAPI.CERT_SIMPLE_CHAIN(Marshal.SizeOf(typeof(CAPI.CERT_SIMPLE_CHAIN))); 
            uint cbSize = (uint) Marshal.ReadInt32(pSimpleChain);
            if (cbSize > Marshal.SizeOf(simpleChain)) 
                cbSize = (uint) Marshal.SizeOf(simpleChain); 
            X509Utils.memcpy(pSimpleChain, new IntPtr(&simpleChain), cbSize);
            m_elements = new X509ChainElement[simpleChain.cElement]; 
            for (int index = 0; index < m_elements.Length; index++) {
                m_elements[index] = new X509ChainElement(Marshal.ReadIntPtr(new IntPtr((long) simpleChain.rgpElement + index * Marshal.SizeOf(typeof(IntPtr)))));
            }
        } 

        public X509ChainElement this[int index] { 
            get { 
                if (index < 0)
                    throw new InvalidOperationException(SR.GetString(SR.InvalidOperation_EnumNotStarted)); 
                if (index >= m_elements.Length)
                    throw new ArgumentOutOfRangeException("index", SR.GetString(SR.ArgumentOutOfRange_Index));
                return m_elements[index];
            } 
        }
 
        public int Count { 
            get {
                return m_elements.Length; 
            }
        }

        public X509ChainElementEnumerator GetEnumerator() { 
            return new X509ChainElementEnumerator(this);
        } 
 
        /// 
        IEnumerator IEnumerable.GetEnumerator() { 
            return new X509ChainElementEnumerator(this);
        }

        ///  
        void ICollection.CopyTo(Array array, int index) {
            if (array == null) 
                throw new ArgumentNullException("array"); 
            if (array.Rank != 1)
                throw new ArgumentException(SR.GetString(SR.Arg_RankMultiDimNotSupported)); 
            if (index < 0 || index >= array.Length)
                throw new ArgumentOutOfRangeException("index", SR.GetString(SR.ArgumentOutOfRange_Index));
            if (index + this.Count > array.Length)
                throw new ArgumentException(SR.GetString(SR.Argument_InvalidOffLen)); 

            for (int i=0; i < this.Count; i++) { 
                array.SetValue(this[i], index); 
                index++;
            } 
        }

        public void CopyTo(X509ChainElement[] array, int index) {
            ((ICollection)this).CopyTo(array, index); 
        }
 
        public bool IsSynchronized { 
            get {
                return false; 
            }
        }

        public Object SyncRoot { 
            get {
                return this; 
            } 
        }
    } 

    public sealed class X509ChainElementEnumerator : IEnumerator {
        private X509ChainElementCollection m_chainElements;
        private int m_current; 

        private X509ChainElementEnumerator () {} 
        internal X509ChainElementEnumerator (X509ChainElementCollection chainElements) { 
            m_chainElements = chainElements;
            m_current = -1; 
        }

        public X509ChainElement Current {
            get { 
                return (X509ChainElement) m_chainElements[m_current];
            } 
        } 

        ///  
        Object IEnumerator.Current {
            get {
                return (Object) m_chainElements[m_current];
            } 
        }
 
        public bool MoveNext() { 
            if (m_current == ((int) m_chainElements.Count - 1))
                return false; 
            m_current++;
            return true;
        }
 
        public void Reset() {
            m_current = -1; 
        } 
    }
} 

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
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X509ChainElement.cs source code in C# .NET

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