/// <summary>
/// Upload data to Amazon S3 using HTTP POST.
/// </summary>
/// <remarks>
/// For more information, <see href="http://docs.aws.amazon.com/AmazonS3/latest/dev/UsingHTTPPOST.html"/>
/// </remarks>
/// <param name="request">Request object which describes the data to POST</param>
/// <param name="callback">An Action delegate that is invoked when the operation completes.</param>
/// <param name="options">A user-defined state object that is passed to the callback procedure. Retrieve this object from within the callback
/// procedure using the AsyncState property.</param>
public void PostObjectAsync(PostObjectRequest request, AmazonServiceCallback<PostObjectRequest, PostObjectResponse> callback, AsyncOptions options = null)
{
options = options == null ? new AsyncOptions() : options;
Action<AmazonWebServiceRequest, AmazonWebServiceResponse, Exception, AsyncOptions> callbackHelper
= (AmazonWebServiceRequest req, AmazonWebServiceResponse res, Exception ex, AsyncOptions ao) =>
{
AmazonServiceResult<PostObjectRequest, PostObjectResponse> responseObject
= new AmazonServiceResult<PostObjectRequest, PostObjectResponse>((PostObjectRequest)req, (PostObjectResponse)res, ex, ao.State);
if (callback != null)
callback(responseObject);
};
ThreadPool.QueueUserWorkItem(new WaitCallback(delegate
{
// Provide a default policy if user doesn't set it.
try
{
InferContentType(request);
if (request.SignedPolicy == null)
{
CreateSignedPolicy(request);
}
PostObject(request, options, callbackHelper);
}
catch (Exception e)
{
callback(new AmazonServiceResult<PostObjectRequest, PostObjectResponse>(request, null, e, options.State));
}
}));
}
private void CreateSignedPolicy(PostObjectRequest request)
{
if (request.ContentType == null)
{
int pos = request.Key.LastIndexOf('.');
string ext = null;
if (pos != -1)
{
ext = request.Key.Substring(pos, request.Key.Length - pos);
request.ContentType = AmazonS3Util.MimeTypeFromExtension(ext);
}
else
{
request.ContentType = "application/octet-stream";
}
}
string policyString = null;
int position = request.Key.LastIndexOf('/');
if (position == -1)
{
policyString = "{\"expiration\": \"" + DateTime.UtcNow.AddHours(24).ToString("yyyy-MM-ddTHH:mm:ssZ") + "\",\"conditions\": [{\"bucket\": \"" +
request.Bucket + "\"},[\"starts-with\", \"$key\", \"" + "\"],{\"acl\": \"private\"},[\"eq\", \"$Content-Type\", " + "\"" + request.ContentType + "\"" + "]]}";
}
else
{
policyString = "{\"expiration\": \"" + DateTime.UtcNow.AddHours(24).ToString("yyyy-MM-ddTHH:mm:ssZ") + "\",\"conditions\": [{\"bucket\": \"" +
request.Bucket + "\"},[\"starts-with\", \"$key\", \"" + request.Key.Substring(0, position) + "/\"],{\"acl\": \"private\"},[\"eq\", \"$Content-Type\", " + "\"" + request.ContentType + "\"" + "]]}";
}
request.SignedPolicy = S3PostUploadSignedPolicy.GetSignedPolicy(policyString, base.Credentials);
}
private void InferContentType(PostObjectRequest request)
{
if (String.IsNullOrEmpty(request.Headers.ContentType))
{
if (request.Key.IndexOf('.') > -1)
request.Headers.ContentType = AmazonS3Util.MimeTypeFromExtension(request.Key.Substring(request.Key.LastIndexOf('.')));
else if (!String.IsNullOrEmpty(request.Path) && request.Path.IndexOf('.') > -1)
request.Headers.ContentType = AmazonS3Util.MimeTypeFromExtension(request.Key.Substring(request.Path.LastIndexOf('.')));
else
request.Headers.ContentType = "application/octet-stream";
}
}
public static PostObjectResponse PostObjectHelper(AmazonS3Client client, string bucketName, string key, PostObjectRequestManipulator manipulator = null)
{
using (MemoryStream stream = new MemoryStream())
{
PostObjectResponse r = null;
Exception responseException = null;
StreamWriter writer = new StreamWriter(stream);
writer.Write(TestContent);
writer.Flush();
stream.Position = 0;
AutoResetEvent ars = new AutoResetEvent(false);
var request = new PostObjectRequest()
{
Bucket = bucketName,
Key = key,
InputStream = stream
};
if (manipulator != null)
{
manipulator(request);
}
client.PostObjectAsync(request, (response) =>
{
responseException = response.Exception;
if (responseException == null)
{
r = response.Response;
}
else
{
Debug.LogWarning(new StreamReader((responseException as Amazon.Runtime.Internal.HttpErrorResponseException).Response.ResponseBody.OpenResponse()).ReadToEnd());
}
ars.Set();
}, new AsyncOptions { ExecuteCallbackOnMainThread = false });
ars.WaitOne();
if (responseException != null)
{
throw responseException;
}
return r;
}
}
private void PostObject(PostObjectRequest request, AsyncOptions options, Action<AmazonWebServiceRequest, AmazonWebServiceResponse, Exception, AsyncOptions> callbackHelper)
{
string url;
string subdomain = request.Region.Equals(RegionEndpoint.USEast1) ? "s3" : "s3-" + request.Region.SystemName;
IDictionary<string, string> headers = new Dictionary<string, string>();
if (request.Bucket.IndexOf('.') > -1)
url = string.Format(CultureInfo.InvariantCulture, "https://{0}.amazonaws.com/{1}/", subdomain, request.Bucket);
else
url = string.Format(CultureInfo.InvariantCulture, "https://{0}.{1}.amazonaws.com", request.Bucket, subdomain);
Uri uri = new Uri(url);
UnityWebRequest webRequest = new UnityWebRequest(uri);
var boundary = Convert.ToBase64String(Guid.NewGuid().ToByteArray()).Replace('=', 'z');
headers[HeaderKeys.ContentTypeHeader] = string.Format(CultureInfo.InvariantCulture, "multipart/form-data; boundary={0}", boundary);
headers[HeaderKeys.UserAgentHeader] = AWSSDKUtils.UserAgentHeader;
webRequest.Method = "POST";
using (var reqStream = new MemoryStream())
{
request.WriteFormData(boundary, reqStream);
byte[] boundaryBytes = Encoding.UTF8.GetBytes(string.Format(CultureInfo.InvariantCulture, "--{0}\r\nContent-Disposition: form-data; name=\"file\"\r\n\r\n", boundary));
reqStream.Write(boundaryBytes, 0, boundaryBytes.Length);
using (var inputStream = null == request.Path ? request.InputStream : File.OpenRead(request.Path))
{
byte[] buf = new byte[1024];
int bytesRead;
while ((bytesRead = inputStream.Read(buf, 0, 1024)) > 0)
{
reqStream.Write(buf, 0, bytesRead);
}
}
byte[] endBoundaryBytes = Encoding.UTF8.GetBytes(string.Format(CultureInfo.InvariantCulture, "\r\n--{0}--", boundary));
reqStream.Write(endBoundaryBytes, 0, endBoundaryBytes.Length);
webRequest.WriteToRequestBody(null, reqStream.ToArray(), headers);
}
var executionContext = new AsyncExecutionContext(
new AsyncRequestContext(this.Config.LogMetrics)
{
ClientConfig = this.Config,
OriginalRequest = request,
Action = callbackHelper,
AsyncOptions = options,
IsAsync = true
},
new AsyncResponseContext()
);
webRequest.SetRequestHeaders(headers);
executionContext.RuntimeState = webRequest;
executionContext.ResponseContext.AsyncResult =
new RuntimeAsyncResult(executionContext.RequestContext.Callback,
executionContext.RequestContext.State);
executionContext.ResponseContext.AsyncResult.AsyncOptions = executionContext.RequestContext.AsyncOptions;
executionContext.ResponseContext.AsyncResult.Action = executionContext.RequestContext.Action;
executionContext.ResponseContext.AsyncResult.Request = executionContext.RequestContext.OriginalRequest;
webRequest.BeginGetResponse(new AsyncCallback(ProcessPostResponse), executionContext);
}
/// <summary>
/// Post Object to S3 Bucket.
/// </summary>
public void PostObject()
{
ResultText.text = "Retrieving the file";
string fileName = GetFileHelper();
var stream = new FileStream(Application.persistentDataPath + Path.DirectorySeparatorChar + fileName, FileMode.Open, FileAccess.Read, FileShare.Read);
ResultText.text += "\nCreating request object";
var request = new PostObjectRequest()
{
Bucket = S3BucketName,
Key = fileName,
InputStream = stream,
CannedACL = S3CannedACL.Private
};
ResultText.text += "\nMaking HTTP post call";
Client.PostObjectAsync(request, (responseObj) =>
{
if (responseObj.Exception == null)
{
ResultText.text += string.Format("\nobject {0} posted to bucket {1}", responseObj.Request.Key, responseObj.Request.Bucket);
}
else
{
ResultText.text += "\nException while posting the result object";
ResultText.text += string.Format("\n receieved error {0}", responseObj.Response.HttpStatusCode.ToString());
}
});
}
private void CreateSignedPolicy(PostObjectRequest request)
{
StringBuilder metadataPolicy = new StringBuilder();
foreach (var kvp in request.Metadata)
{
var metakey = kvp.Key.StartsWith(S3Constants.PostFormDataXAmzPrefix, StringComparison.Ordinal) ? kvp.Key : S3Constants.PostFormDataMetaPrefix + kvp.Key;
metadataPolicy.Append(string.Format(",{{\"{0}\": \"{1}\"}}", metakey, kvp.Value));
}
StringBuilder headersPolicy = new StringBuilder();
foreach (var key in request.Headers.Keys)
{
headersPolicy.Append(string.Format(",{{\"{0}\": \"{1}\"}}", key, request.Headers[key]));
}
string policyString = null;
int position = request.Key.LastIndexOf('/');
if (position == -1)
{
policyString = "{\"expiration\": \"" + DateTime.UtcNow.AddHours(24).ToString("yyyy-MM-ddTHH:mm:ssZ") + "\",\"conditions\": [{\"bucket\": \"" +
request.Bucket + "\"},[\"starts-with\", \"$key\", \"" + "\"],{\"acl\": \"" + request.CannedACL.Value + "\"},[\"eq\", \"$Content-Type\", " +
"\"" + request.Headers.ContentType + "\"" + "]" + metadataPolicy.ToString() + headersPolicy.ToString() + "]}";
}
else
{
policyString = "{\"expiration\": \"" + DateTime.UtcNow.AddHours(24).ToString("yyyy-MM-ddTHH:mm:ssZ") + "\",\"conditions\": [{\"bucket\": \"" +
request.Bucket + "\"},[\"starts-with\", \"$key\", \"" + request.Key.Substring(0, position) + "/\"],{\"acl\": \"" + request.CannedACL.Value +
"\"},[\"eq\", \"$Content-Type\", " + "\"" + request.Headers.ContentType + "\"" + "]" + metadataPolicy.ToString() + headersPolicy.ToString() + "]}";
}
if (Config.SignatureVersion == "2")
{
request.SignedPolicy = S3PostUploadSignedPolicy.GetSignedPolicy(policyString, base.Credentials);
}
else
{
request.SignedPolicy = S3PostUploadSignedPolicy.GetSignedPolicyV4(policyString, base.Credentials, request.Region);
}
}