/// <summary>
/// Marshalls the parameters for a presigned url for a preferred signing protocol.
/// </summary>
/// <param name="getPreSignedUrlRequest"></param>
/// <param name="accessKey"></param>
/// <param name="token"></param>
/// <param name="aws4Signing">
/// True if AWS4 signing will be used; if the expiry period in the request exceeds the
/// maximum allowed for AWS4 (one week), an ArgumentException is thrown.
/// </param>
/// <returns></returns>
private static IRequest Marshall(GetPreSignedUrlRequest getPreSignedUrlRequest,
string accessKey,
string token,
bool aws4Signing)
{
IRequest request = new DefaultRequest(getPreSignedUrlRequest, "AmazonS3");
request.HttpMethod = getPreSignedUrlRequest.Verb.ToString();
var headers = getPreSignedUrlRequest.Headers;
foreach (var key in headers.Keys)
request.Headers[key] = headers[key];
AmazonS3Util.SetMetadataHeaders(request, getPreSignedUrlRequest.Metadata);
if (!string.IsNullOrEmpty(token))
request.Headers[HeaderKeys.XAmzSecurityTokenHeader] = token;
if (getPreSignedUrlRequest.ServerSideEncryptionMethod != null && getPreSignedUrlRequest.ServerSideEncryptionMethod != ServerSideEncryptionMethod.None)
request.Headers.Add(HeaderKeys.XAmzServerSideEncryptionHeader, S3Transforms.ToStringValue(getPreSignedUrlRequest.ServerSideEncryptionMethod));
if (getPreSignedUrlRequest.IsSetServerSideEncryptionCustomerMethod())
request.Headers.Add(HeaderKeys.XAmzSSECustomerAlgorithmHeader, getPreSignedUrlRequest.ServerSideEncryptionCustomerMethod);
if (getPreSignedUrlRequest.IsSetServerSideEncryptionKeyManagementServiceKeyId())
request.Headers.Add(HeaderKeys.XAmzServerSideEncryptionAwsKmsKeyIdHeader, getPreSignedUrlRequest.ServerSideEncryptionKeyManagementServiceKeyId);
var queryParameters = request.Parameters;
var uriResourcePath = new StringBuilder("/");
if (!string.IsNullOrEmpty(getPreSignedUrlRequest.BucketName))
uriResourcePath.Append(S3Transforms.ToStringValue(getPreSignedUrlRequest.BucketName));
if (!string.IsNullOrEmpty(getPreSignedUrlRequest.Key))
{
if (uriResourcePath.Length > 1)
uriResourcePath.Append("/");
uriResourcePath.Append(S3Transforms.ToStringValue(getPreSignedUrlRequest.Key));
}
var baselineTime = aws4Signing ? DateTime.UtcNow : new DateTime(1970, 1, 1);
var expires = Convert.ToInt64((getPreSignedUrlRequest.Expires.ToUniversalTime() - baselineTime).TotalSeconds);
if (aws4Signing && expires > AWS4PreSignedUrlSigner.MaxAWS4PreSignedUrlExpiry)
{
var msg = string.Format(CultureInfo.InvariantCulture, "The maximum expiry period for a presigned url using AWS4 signing is {0} seconds",
AWS4PreSignedUrlSigner.MaxAWS4PreSignedUrlExpiry);
throw new ArgumentException(msg);
}
queryParameters.Add(aws4Signing ? "X-Amz-Expires" : "Expires", expires.ToString(CultureInfo.InvariantCulture));
if (!string.IsNullOrEmpty(token))
queryParameters.Add("x-amz-security-token", token);
if (!aws4Signing)
queryParameters.Add("AWSAccessKeyId", accessKey);
if (getPreSignedUrlRequest.IsSetVersionId())
request.AddSubResource("versionId", S3Transforms.ToStringValue(getPreSignedUrlRequest.VersionId));
var responseHeaderOverrides = getPreSignedUrlRequest.ResponseHeaderOverrides;
if (!string.IsNullOrEmpty(responseHeaderOverrides.CacheControl))
queryParameters.Add("response-cache-control", responseHeaderOverrides.CacheControl);
if (!string.IsNullOrEmpty(responseHeaderOverrides.ContentType))
queryParameters.Add("response-content-type", responseHeaderOverrides.ContentType);
if (!string.IsNullOrEmpty(responseHeaderOverrides.ContentLanguage))
queryParameters.Add("response-content-language", responseHeaderOverrides.ContentLanguage);
if (!string.IsNullOrEmpty(responseHeaderOverrides.Expires))
queryParameters.Add("response-expires", responseHeaderOverrides.Expires);
if (!string.IsNullOrEmpty(responseHeaderOverrides.ContentDisposition))
queryParameters.Add("response-content-disposition", responseHeaderOverrides.ContentDisposition);
if (!string.IsNullOrEmpty(responseHeaderOverrides.ContentEncoding))
queryParameters.Add("response-content-encoding", responseHeaderOverrides.ContentEncoding);
request.ResourcePath = uriResourcePath.ToString();
request.UseQueryString = true;
return request;
}
IRestResponse invokeSignedRequest(Method httpMethod, string endpointURL, string reqPath,
Dictionary<string, string> headers, Dictionary<string, object> paramz, object jsonEntity)
{
if (string.IsNullOrEmpty(accessKey))
{
throw new Exception("Blank access key: " + httpMethod + " " + reqPath);
}
bool doSign = true;
if (string.IsNullOrEmpty(secretKey) && string.IsNullOrEmpty(tokenKey)) {
if (headers == null) {
headers = new Dictionary<string, string>();
}
headers["Authorization"] = "Anonymous " + accessKey;
doSign = false;
}
var req = new DefaultRequest(new ParaRequest(), "para");
req.Endpoint = new Uri(endpointURL);
req.ResourcePath = reqPath;
req.HttpMethod = httpMethod.ToString();
req.UseQueryString = true;
var restReq = new RestRequest(new Uri(endpointURL));
restReq.Method = httpMethod;
client.BaseUrl = new Uri(endpoint + reqPath);
if (paramz != null)
{
foreach (var param in paramz)
{
if (param.Value == null) continue;
if (param.Value.GetType() == typeof(List<string>))
{
if (((List<string>) param.Value).Count > 0) {
req.Parameters.Add(param.Key, ((List<string>) param.Value).First());
foreach (var val in (List<string>) param.Value)
{
if (val != null)
{
restReq.AddQueryParameter(param.Key, val);
}
}
}
}
else
{
req.Parameters.Add(param.Key, (string) param.Value);
restReq.AddQueryParameter(param.Key, (string) param.Value);
}
}
}
if (headers != null)
{
foreach (var key in headers.Keys) {
req.Headers[key] = headers[key];
}
}
if (jsonEntity != null)
{
string json = JsonConvert.SerializeObject(jsonEntity, Formatting.None);
restReq.AddParameter("application/json", json, ParameterType.RequestBody);
restReq.AddHeader("Content-Type", "application/json");
req.Headers.Add("Content-Type", "application/json");
req.Content = System.Text.Encoding.UTF8.GetBytes(json);
}
if (tokenKey != null)
{
// make sure you don't create an infinite loop!
if (!(httpMethod.ToString() == "GET" && reqPath == JWT_PATH))
{
refreshToken();
}
req.Headers.Add("Authorization", "Bearer " + tokenKey);
}
else if (doSign)
{
try
{
var p = new ParaConfig();
p.ServiceURL = getEndpoint();
p.AuthenticationServiceName = "para";
signer.Sign(req, p, null, accessKey, secretKey);
}
catch
{
return null;
}
}
if (req.Headers != null)
{
foreach (var header in req.Headers)
{
restReq.AddHeader(header.Key, header.Value);
}
}
return client.Execute(restReq);
}
