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113 lines
3.0 KiB
113 lines
3.0 KiB
1 year ago
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#if !BESTHTTP_DISABLE_ALTERNATE_SSL && (!UNITY_WEBGL || UNITY_EDITOR)
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#pragma warning disable
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using System;
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using System.IO;
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using BestHTTP.SecureProtocol.Org.BouncyCastle.Asn1;
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using BestHTTP.SecureProtocol.Org.BouncyCastle.Asn1.Cms;
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using BestHTTP.SecureProtocol.Org.BouncyCastle.Utilities;
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using BestHTTP.SecureProtocol.Org.BouncyCastle.Utilities.Zlib;
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namespace BestHTTP.SecureProtocol.Org.BouncyCastle.Cms
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{
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/**
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* containing class for an CMS Compressed Data object
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*/
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public class CmsCompressedData
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{
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internal ContentInfo contentInfo;
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public CmsCompressedData(
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byte[] compressedData)
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: this(CmsUtilities.ReadContentInfo(compressedData))
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{
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}
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public CmsCompressedData(
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Stream compressedDataStream)
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: this(CmsUtilities.ReadContentInfo(compressedDataStream))
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{
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}
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public CmsCompressedData(
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ContentInfo contentInfo)
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{
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this.contentInfo = contentInfo;
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}
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/**
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* Return the uncompressed content.
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*
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* @return the uncompressed content
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* @throws CmsException if there is an exception uncompressing the data.
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*/
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public byte[] GetContent()
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{
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CompressedData comData = CompressedData.GetInstance(contentInfo.Content);
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ContentInfo content = comData.EncapContentInfo;
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Asn1OctetString bytes = (Asn1OctetString) content.Content;
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ZInputStream zIn = new ZInputStream(bytes.GetOctetStream());
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try
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{
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return CmsUtilities.StreamToByteArray(zIn);
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}
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catch (IOException e)
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{
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throw new CmsException("exception reading compressed stream.", e);
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}
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finally
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{
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BestHTTP.SecureProtocol.Org.BouncyCastle.Utilities.Platform.Dispose(zIn);
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}
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}
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/**
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* Return the uncompressed content, throwing an exception if the data size
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* is greater than the passed in limit. If the content is exceeded getCause()
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* on the CMSException will contain a StreamOverflowException
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*
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* @param limit maximum number of bytes to read
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* @return the content read
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* @throws CMSException if there is an exception uncompressing the data.
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*/
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public byte[] GetContent(int limit)
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{
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CompressedData comData = CompressedData.GetInstance(contentInfo.Content);
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ContentInfo content = comData.EncapContentInfo;
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Asn1OctetString bytes = (Asn1OctetString)content.Content;
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ZInputStream zIn = new ZInputStream(new MemoryStream(bytes.GetOctets(), false));
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try
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{
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return CmsUtilities.StreamToByteArray(zIn, limit);
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}
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catch (IOException e)
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{
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throw new CmsException("exception reading compressed stream.", e);
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}
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}
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/**
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* return the ContentInfo
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*/
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public ContentInfo ContentInfo
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{
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get { return contentInfo; }
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}
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/**
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* return the ASN.1 encoded representation of this object.
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*/
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public byte[] GetEncoded()
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{
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return contentInfo.GetEncoded();
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}
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}
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}
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#pragma warning restore
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#endif
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