public static string AuthField(
Credentials creds,
string verb,
string date,
string resourcePath,
IDictionary <string, string> queryString,
string md5 = "",
string contentType = "",
IDictionary <string, string> amzHeaders = null)
{
var payload = BuildPayload(
verb,
date,
resourcePath,
queryString,
md5,
contentType,
amzHeaders ?? new Dictionary <string, string>()
);
return("AWS " + creds.AccessId + ":" + S3Signer.Signature(creds.Key, payload));
}
private HttpWebRequest CreateRequest(Ds3Request request, Stream content)
{
if (request.Verb == HttpVerb.PUT || request.Verb == HttpVerb.POST)
{
if (content != Stream.Null && !content.CanRead)
{
throw new Ds3.Runtime.Ds3RequestException(Resources.InvalidStreamException);
}
}
DateTime date = DateTime.UtcNow;
UriBuilder uriBuilder = new UriBuilder(_endpoint);
uriBuilder.Path = HttpHelper.PercentEncodePath(request.Path);
if (request.QueryParams.Count > 0)
{
uriBuilder.Query = BuildQueryParams(request.QueryParams);
}
HttpWebRequest httpRequest = (HttpWebRequest)WebRequest.Create(uriBuilder.ToString());
httpRequest.ServicePoint.ConnectionLimit = _connectionLimit;
httpRequest.Method = request.Verb.ToString();
if (Proxy != null)
{
WebProxy webProxy = new WebProxy();
webProxy.Address = Proxy;
httpRequest.Proxy = webProxy;
}
httpRequest.Date = date;
httpRequest.Host = CreateHostString(_endpoint);
httpRequest.AllowAutoRedirect = false;
httpRequest.AllowWriteStreamBuffering = false;
httpRequest.ReadWriteTimeout = this._readWriteTimeout;
httpRequest.Timeout = this._requestTimeout;
var md5 = ComputeChecksum(request.Md5, content);
if (!string.IsNullOrEmpty(md5))
{
httpRequest.Headers.Add(HttpHeaders.ContentMd5, md5);
}
httpRequest.Headers.Add(HttpHeaders.Authorization, S3Signer.AuthField(
_creds,
request.Verb.ToString(),
date.ToString("r"),
request.Path,
request.QueryParams,
md5: md5,
amzHeaders: request.Headers
));
foreach (var byteRange in request.GetByteRanges())
{
httpRequest.AddRange(byteRange.Start, byteRange.End);
}
foreach (var header in request.Headers)
{
httpRequest.Headers.Add(header.Key, header.Value);
}
if (request.Verb == HttpVerb.PUT || request.Verb == HttpVerb.POST)
{
httpRequest.ContentLength = content.Length;
if (content != Stream.Null)
{
using (var requestStream = httpRequest.GetRequestStream())
{
if (content.Position != 0)
{
content.Seek(0, SeekOrigin.Begin);
}
content.CopyTo(requestStream, this.CopyBufferSize);
requestStream.Flush();
}
}
}
return(httpRequest);
}
