Microsoft.Protocols.TestSuites.SharedAdapter.ZipFilesChunking.AnalyzeChunking C# (CSharp) Method

        public override void AnalyzeChunking(RootNodeObject rootNode, ITestSite site)
        {
            List<IntermediateNodeObject> cloneList = new List<IntermediateNodeObject>(rootNode.IntermediateNodeObjectList);

            while (cloneList.Count != 0)
            {
                IntermediateNodeObject nodeObject = cloneList.First();
                byte[] content = nodeObject.DataNodeObjectData.ObjectData;

                if (cloneList.Count == 1)
                {
                    if (content.Length > 1048576)
                    {
                        throw new NotImplementedException("If the final chunk is larger than 1MB, the signature method is not implemented.");
                    }

                    // Only final chunk left
                    SignatureObject expect = this.GetSHA1Signature(content);
                    if (!expect.Equals(nodeObject.Signature))
                    {
                        site.Assert.Fail("For the Zip file, final part chunk expect the signature {0}, actual signature {1}", expect.ToString(), nodeObject.Signature.ToString());
                    }

                    // Verify the less than 1MB final part related requirements
                    if (SharedContext.Current.IsMsFsshttpRequirementsCaptured)
                    {
                        MsfsshttpdCapture.VerifySmallFinalChunk(SharedContext.Current.Site);
                    }
                }
                else
                {
                    if (ZipHeader.IsFileHeader(content, 0))
                    {
                        byte[] dataFileSignatureBytes;
                        byte[] header = this.AnalyzeFileHeader(content, 0, out dataFileSignatureBytes);
                        int headerLength = header.Length;
                        int compressedSize = (int)this.GetCompressedSize(dataFileSignatureBytes);

                        if (headerLength + compressedSize <= 4096)
                        {
                            IntermediateNodeObject expectNode = new IntermediateNodeObject.IntermediateNodeObjectBuilder().Build(content, this.GetSingleChunkSignature(header, dataFileSignatureBytes));
                            if (!expectNode.Signature.Equals(nodeObject.Signature))
                            {
                                site.Assert.Fail("For the Zip file, when zip file is less than 4096, expect the signature {0}, actual signature {1}", expectNode.Signature.ToString(), nodeObject.Signature.ToString());
                            }

                            // Verify the zip file less than 4096 bytes
                            MsfsshttpdCapture.VerifyZipFileLessThan4096Bytes(SharedContext.Current.Site);
                        }
                        else
                        {
                            SignatureObject expectHeader = this.GetSHA1Signature(header);
                            if (!expectHeader.Equals(nodeObject.Signature))
                            {
                                site.Assert.Fail("For the Zip file header, expect the signature {0}, actual signature {1}", expectHeader.ToString(), nodeObject.Signature.ToString());
                            }

                            // Remove the header node
                            cloneList.RemoveAt(0);

                            // Then expect the next is file content node
                            nodeObject = cloneList.First();

                            // Here having something need to be distinguished between the MOSS2010 and MOSS2013
                            if (nodeObject.DataNodeObjectData == null && nodeObject.IntermediateNodeObjectList != null)
                            {
                                // This situation could most happens for MOSS2010, we fake intermediate node instead of the root node when the zip file size is larger than 1M.
                                // In the current stage, this kind of signature algorithm is not mentioned in the open specification, so leave this verify blank.
                            }
                            else if (nodeObject.DataNodeObjectData != null)
                            {
                                site.Assert.AreEqual<ulong>(
                                            (ulong)compressedSize,
                                            nodeObject.DataSize.DataSize,
                                            "The Data Size of the Intermediate Node Object MUST be the total number of bytes represented by the chunk.");

                                SignatureObject contentSignature = new SignatureObject();
                                contentSignature.SignatureData = new BinaryItem(dataFileSignatureBytes);
                                if (!contentSignature.Equals(nodeObject.Signature))
                                {
                                    site.Assert.Fail("For the Zip file content, expect the signature {0}, actual signature {1}", contentSignature.ToString(), nodeObject.Signature.ToString());
                                }

                                // Verify the zip file larger than 4096 bytes and less than 1MB.
                                if (SharedContext.Current.IsMsFsshttpRequirementsCaptured)
                                {
                                    MsfsshttpdCapture.VerifyZipFileHeaderAndContentSignature(SharedContext.Current.Site);
                                    MsfsshttpdCapture.VerifyIntermediateNodeForZipFileChunk(SharedContext.Current.Site);
                                }
                            }
                            else
                            {
                                throw new InvalidOperationException("The DataNodeObjectData and IntermediateNodeObjectList cannot be null at the same time.");
                            }
                        }
                    }
                }

                cloneList.RemoveAt(0);
            }
        }