private string ExtractBinaries()
{
lock (EXTRACT_BIN_MUTEX)
{
var watchFiles = new List <string>();
var os = GetOSPlatform();
var root = "amazon_kinesis_producer_native_binaries";
var tempDirectory = this.config.TempDirectory;
if (tempDirectory.Trim().Length == 0)
{
tempDirectory = Path.GetTempPath();
}
tempDirectory = Path.Combine(tempDirectory, root);
this.pathToTmpDir = tempDirectory;
var binPath = config.NativeExecutable;
if (!string.IsNullOrWhiteSpace(binPath))
{
this.pathToExecutable = binPath.Trim();
this.logger.LogWarning("Using non-default native binary at " + this.pathToExecutable);
this.pathToLibDir = string.Empty;
return(string.Empty);
}
else
{
this.logger.LogInformation("Extracting binaries to " + tempDirectory);
try
{
if (!Directory.Exists(tempDirectory) && Directory.CreateDirectory(tempDirectory) == null)
{
throw new IOException("Could not create tmp dir " + tempDirectory);
}
var extension = os == "windows" ? ".exe" : "";
var executableName = "kinesis_producer" + extension;
var bin = IOUtils.GetResourceFile($"{root}.{os}.{executableName}", os);
var mdHex = SHA1Hash(bin);
this.pathToExecutable = Path.Combine(this.pathToTmpDir, $"kinesis_producer_{mdHex}{extension}");
watchFiles.Add(this.pathToExecutable);
var pathToLock = Path.Combine(this.pathToTmpDir, $"kinesis_producer_{mdHex}.lock");
using (var fileLock = new FileStream(pathToLock, FileMode.OpenOrCreate, FileAccess.ReadWrite, FileShare.None))
{
if (File.Exists(this.pathToExecutable))
{
var contentEqual = false;
if (new FileInfo(this.pathToExecutable).Length == bin.Length)
{
byte[] existingBin = File.ReadAllBytes(this.pathToExecutable);
contentEqual = bin.SequenceEqual(existingBin);
}
if (!contentEqual)
{
throw new SecurityException($"The contents of the binary {Path.GetFullPath(pathToExecutable)} is not what it's expected to be.");
}
}
else
{
File.WriteAllBytes(pathToExecutable, bin);
if (!RuntimeInformation.IsOSPlatform(OSPlatform.Windows))
{
this.logger.LogDebug("Setting execute permissions on native executable..");
var setExecutePermissionsResult = BashHelper.Run($"chmod +x {pathToExecutable}");
this.logger.LogDebug($"Bash result: {setExecutePermissionsResult}");
}
}
}
var certificateExtractor = new CertificateExtractor();
var caDirectory = certificateExtractor.ExtractCertificates(pathToTmpDir);
watchFiles.AddRange(certificateExtractor.ExtractedCertificates);
this.pathToLibDir = this.pathToTmpDir;
FileAgeManager.Instance.RegisterFiles(watchFiles);
return(caDirectory);
}
catch (Exception e)
{
throw new Exception("Could not copy native binaries to temp directory " + tempDirectory, e);
}
}
}
}