AsnEncodedData.cs source code in C# .NET

Source code for the .NET framework in C#

                        
Code:

                         / DotNET / DotNET / 8.0 / untmp / whidbey / REDBITS / ndp / fx / src / security / system / security / cryptography / AsnEncodedData.cs / 2 / AsnEncodedData.cs
                        

                        
                            // ==++== 
//
//   Copyright (c) Microsoft Corporation.  All rights reserved.
//
// ==--== 

// 
// AsnEncodedData.cs 
//
 
namespace System.Security.Cryptography {
    using System.Collections;
    using System.Globalization;
    using System.Runtime.InteropServices; 

    public class AsnEncodedData { 
        internal Oid m_oid = null; 
        internal byte[] m_rawData = null;
 
        internal AsnEncodedData (Oid oid) {
            m_oid = oid;
        }
 
        internal AsnEncodedData (string oid, CAPI.CRYPTOAPI_BLOB encodedBlob) : this(oid, CAPI.BlobToByteArray(encodedBlob)) {}
        internal AsnEncodedData (Oid oid, CAPI.CRYPTOAPI_BLOB encodedBlob) : this(oid, CAPI.BlobToByteArray(encodedBlob)) {} 
 
        protected AsnEncodedData () {}
 
        public AsnEncodedData (byte[] rawData) {
            Reset(null, rawData);
        }
 
        public AsnEncodedData (string oid, byte[] rawData) {
            Reset(new Oid(oid), rawData); 
        } 

        public AsnEncodedData (Oid oid, byte[] rawData) { 
            Reset(oid, rawData);
        }

        public AsnEncodedData (AsnEncodedData asnEncodedData) { 
            if (asnEncodedData == null)
                throw new ArgumentNullException("asnEncodedData"); 
            Reset(asnEncodedData.m_oid, asnEncodedData.m_rawData); 
        }
 
        public Oid Oid {
            get {
                return m_oid;
            } 
            set {
                if (value == null) 
                    m_oid = null; 
                else
                    m_oid = new Oid(value); 
            }
        }

        public byte[] RawData { 
            get {
                return m_rawData; 
            } 
            set {
                if (value == null) 
                    throw new ArgumentNullException("value");
                m_rawData = (byte[]) value.Clone();
            }
        } 

        public virtual void CopyFrom (AsnEncodedData asnEncodedData) { 
            if (asnEncodedData == null) 
                throw new ArgumentNullException("asnEncodedData");
            Reset(asnEncodedData.m_oid, asnEncodedData.m_rawData); 
        }

        public virtual string Format (bool multiLine) {
            // Return empty string if no data to format. 
            if (m_rawData == null || m_rawData.Length == 0)
                return String.Empty; 
 
            // If OID is not present, then we can force CryptFormatObject
            // to use hex formatting by providing an empty OID string. 
            string oidValue = String.Empty;
            if (m_oid != null && m_oid.Value != null)
                oidValue = m_oid.Value;
 
            return CAPI.CryptFormatObject(CAPI.X509_ASN_ENCODING,
                                          multiLine ? CAPI.CRYPT_FORMAT_STR_MULTI_LINE : 0, 
                                          oidValue, 
                                          m_rawData);
        } 

        private void Reset (Oid oid, byte[] rawData) {
            this.Oid = oid;
            this.RawData = rawData; 
        }
    } 
 
    public sealed class AsnEncodedDataCollection : ICollection {
        private ArrayList m_list = null; 
        private Oid m_oid = null;

        public AsnEncodedDataCollection () {
            m_list = new ArrayList(); 
            m_oid = null;
        } 
 
        public AsnEncodedDataCollection(AsnEncodedData asnEncodedData) : this() {
            m_list.Add(asnEncodedData); 
        }

        public int Add (AsnEncodedData asnEncodedData) {
            if (asnEncodedData == null) 
                throw new ArgumentNullException("asnEncodedData");
 
            // 
            // If m_oid is not null, then OIDs must match.
            // 
            if (m_oid != null)  {
                string szOid1 = m_oid.Value;
                string szOid2 = asnEncodedData.Oid.Value;
 
                if (szOid1 != null && szOid2 != null) {
                    // Both are not null, so make sure OIDs match. 
                    if (String.Compare(szOid1, szOid2, StringComparison.OrdinalIgnoreCase) != 0) 
                        throw new CryptographicException(SR.GetString(SR.Cryptography_Asn_MismatchedOidInCollection));
                } 
                else if (szOid1 != null || szOid2 != null) {
                    // Can't be matching, since only one of them is null.
                    throw new CryptographicException(SR.GetString(SR.Cryptography_Asn_MismatchedOidInCollection));
                } 
            }
 
            return m_list.Add(asnEncodedData); 
        }
 
        public void Remove (AsnEncodedData asnEncodedData) {
            if (asnEncodedData == null)
                throw new ArgumentNullException("asnEncodedData");
            m_list.Remove(asnEncodedData); 
        }
 
        public AsnEncodedData this[int index] { 
            get {
                return (AsnEncodedData) m_list[index]; 
            }
        }

        public int Count { 
            get {
                return m_list.Count; 
            } 
        }
 
        public AsnEncodedDataEnumerator GetEnumerator() {
            return new AsnEncodedDataEnumerator(this);
        }
 
        /// 
        IEnumerator IEnumerable.GetEnumerator() { 
            return new AsnEncodedDataEnumerator(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(AsnEncodedData[] array, int index) { 
            ((ICollection)this).CopyTo(array, index);
        }

        public bool IsSynchronized { 
            get {
                return false; 
            } 
        }
 
        public Object SyncRoot {
            get {
                return this;
            } 
        }
    } 
 
    public sealed class AsnEncodedDataEnumerator : IEnumerator {
        private AsnEncodedDataCollection m_asnEncodedDatas; 
        private int m_current;

        private AsnEncodedDataEnumerator() {}
        internal AsnEncodedDataEnumerator(AsnEncodedDataCollection asnEncodedDatas) { 
            m_asnEncodedDatas = asnEncodedDatas;
            m_current = -1; 
        } 

        public AsnEncodedData Current { 
            get {
                return m_asnEncodedDatas[m_current];
            }
        } 

        ///  
        Object IEnumerator.Current { 
            get {
                return (Object) m_asnEncodedDatas[m_current]; 
            }
        }

        public bool MoveNext() { 
            if (m_current == ((int) m_asnEncodedDatas.Count - 1))
                return false; 
            m_current++; 
            return true;
        } 

        public void Reset() {
            m_current = -1;
        } 
    }
}

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