/// <summary>
/// Configures and executes REST call: Supports JSON
/// </summary>
/// <typeparam name="T">Generic Type parameter for response object</typeparam>
/// <param name="apiContext">APIContext object</param>
/// <param name="httpMethod">HttpMethod type</param>
/// <param name="resource">URI path of the resource</param>
/// <param name="payload">JSON request payload</param>
/// <param name="endpoint">Endpoint to use when generating the full URL for the resource. If none is specified, a default endpoint is generated by the SDK based on other config settings.</param>
/// <param name="setAuthorizationHeader">Specifies whether or not to set the Authorization header in outgoing requests. Defaults to true.</param>
/// <returns>Response object or null otherwise for void API calls</returns>
/// <exception cref="PayPal.HttpException">Thrown if there was an error sending the request.</exception>
/// <exception cref="PayPal.PaymentsException">Thrown if an HttpException was raised and contains a Payments API error object.</exception>
/// <exception cref="PayPal.PayPalException">Thrown for any other issues encountered. See inner exception for further details.</exception>
protected internal static T ConfigureAndExecute <T>(APIContext apiContext, HttpMethod httpMethod, string resource, string payload = "", string endpoint = "", bool setAuthorizationHeader = true)
{
// Verify the state of the APIContext object.
if (apiContext == null)
{
throw new PayPalException("APIContext object is null");
}
try
{
var config = apiContext.GetConfigWithDefaults();
var headersMap = GetHeaderMap(apiContext);
if (!setAuthorizationHeader && headersMap.ContainsKey(BaseConstants.AuthorizationHeader))
{
headersMap.Remove(BaseConstants.AuthorizationHeader);
}
if (string.IsNullOrEmpty(endpoint))
{
endpoint = GetEndpoint(config);
}
// Create the URI where the HTTP request will be sent.
Uri uniformResourceIdentifier = null;
var baseUri = new Uri(endpoint);
if (!Uri.TryCreate(baseUri, resource, out uniformResourceIdentifier))
{
throw new PayPalException("Cannot create URL; baseURI=" + baseUri + ", resourcePath=" + resource);
}
// Create the HttpRequest object that will be used to send the HTTP request.
var connMngr = ConnectionManager.Instance;
var httpRequest = connMngr.GetConnection(config, uniformResourceIdentifier.ToString());
httpRequest.Method = httpMethod.ToString();
// Set custom content type (default to [application/json])
if (headersMap != null && headersMap.ContainsKey(BaseConstants.ContentTypeHeader))
{
httpRequest.ContentType = headersMap[BaseConstants.ContentTypeHeader].Trim();
headersMap.Remove(BaseConstants.ContentTypeHeader);
}
else
{
httpRequest.ContentType = BaseConstants.ContentTypeHeaderJson;
}
// Set User-Agent HTTP header
if (headersMap.ContainsKey(BaseConstants.UserAgentHeader))
{
// aganzha
//iso-8859-1
var iso8851 = Encoding.GetEncoding("iso-8859-1", new EncoderReplacementFallback(string.Empty), new DecoderExceptionFallback());
var bytes = Encoding.Convert(Encoding.UTF8, iso8851, Encoding.UTF8.GetBytes(headersMap[BaseConstants.UserAgentHeader]));
httpRequest.Headers["User-Agent"] = iso8851.GetString(bytes);
headersMap.Remove(BaseConstants.UserAgentHeader);
}
// Set Custom HTTP headers
foreach (KeyValuePair <string, string> entry in headersMap)
{
httpRequest.Headers[entry.Key] = entry.Value;
}
// Log the headers
//foreach (string headerName in httpRequest.Headers)
//{
// logger.DebugFormat(headerName + ":" + httpRequest.Headers[headerName]);
//}
// Execute call
var connectionHttp = new HttpConnection(config);
// Setup the last request & response details.
LastRequestDetails.Value = connectionHttp.RequestDetails;
LastResponseDetails.Value = connectionHttp.ResponseDetails;
var response = connectionHttp.Execute(payload, httpRequest).Result;
if (typeof(T).Name.Equals("Object"))
{
return(default(T));
}
else if (typeof(T).Name.Equals("String"))
{
return((T)Convert.ChangeType(response, typeof(T)));
}
return(JsonFormatter.ConvertFromJson <T>(response));
}
catch (ConnectionException ex)
{
if (ex is HttpException)
{
var httpEx = ex as HttpException;
// Check to see if we have a Payments API error.
if (httpEx.StatusCode == HttpStatusCode.BadRequest)
{
PaymentsException paymentsEx;
if (httpEx.TryConvertTo <PaymentsException>(out paymentsEx))
{
throw paymentsEx;
}
}
else if (httpEx.StatusCode == HttpStatusCode.Unauthorized)
{
IdentityException identityEx;
if (httpEx.TryConvertTo <IdentityException>(out identityEx))
{
throw identityEx;
}
}
}
throw;
}
catch (PayPalException)
{
// If we get a PayPalException, just rethrow to preserve the stack trace.
throw;
}
catch (System.Exception ex)
{
throw new PayPalException(ex.Message, ex);
}
}
/// <summary>
/// Generates a new OAuth token useing the specified client credentials in the authorization request.
/// </summary>
/// <param name="base64ClientId">The base-64 encoded credentials to be used in the authorization request.</param>
/// <returns>The OAuth access token to use for making PayPal requests.</returns>
private string GenerateOAuthToken(string base64ClientId)
{
string response = null;
Uri uniformResourceIdentifier = null;
Uri baseUri = null;
if (config.ContainsKey(BaseConstants.OAuthEndpoint))
{
baseUri = new Uri(config[BaseConstants.OAuthEndpoint]);
}
else if (config.ContainsKey(BaseConstants.EndpointConfig))
{
baseUri = new Uri(config[BaseConstants.EndpointConfig]);
}
else if (config.ContainsKey(BaseConstants.ApplicationModeConfig))
{
string mode = config[BaseConstants.ApplicationModeConfig];
if (mode.Equals(BaseConstants.LiveMode))
{
baseUri = new Uri(BaseConstants.RESTLiveEndpoint);
}
else if (mode.Equals(BaseConstants.SandboxMode))
{
baseUri = new Uri(BaseConstants.RESTSandboxEndpoint);
}
else
{
throw new ConfigException("You must specify one of mode(live/sandbox) OR endpoint in the configuration");
}
}
bool success = Uri.TryCreate(baseUri, OAuthTokenPath, out uniformResourceIdentifier);
ConnectionManager connManager = ConnectionManager.Instance;
HttpWebRequest httpRequest = connManager.GetConnection(this.config, uniformResourceIdentifier.AbsoluteUri);
Dictionary <string, string> headers = new Dictionary <string, string>();
headers.Add("Authorization", "Basic " + base64ClientId);
string postRequest = "grant_type=client_credentials";
httpRequest.Method = "POST";
httpRequest.Accept = "*/*";
httpRequest.ContentType = "application/x-www-form-urlencoded";
// Set User-Agent HTTP header
var userAgentMap = UserAgentHeader.GetHeader();
foreach (KeyValuePair <string, string> entry in userAgentMap)
{
// aganzha
//iso-8859-1
var iso8851 = Encoding.GetEncoding("iso-8859-1", new EncoderReplacementFallback(string.Empty), new DecoderExceptionFallback());
var bytes = Encoding.Convert(Encoding.UTF8, iso8851, Encoding.UTF8.GetBytes(entry.Value));
httpRequest.UserAgent = iso8851.GetString(bytes);
}
// Set Custom HTTP headers
foreach (KeyValuePair <string, string> header in headers)
{
httpRequest.Headers.Add(header.Key, header.Value);
}
foreach (string headerName in httpRequest.Headers)
{
logger.DebugFormat(headerName + ":" + httpRequest.Headers[headerName]);
}
HttpConnection httpConnection = new HttpConnection(config);
try
{
response = httpConnection.Execute(postRequest, httpRequest);
}
catch (PayPal.HttpException ex)
{
// If we get an HTTP exception back and the status code is 401,
// then try and generate an IdentityException object to throw.
if (ex.StatusCode == HttpStatusCode.Unauthorized)
{
IdentityException identityEx;
if (ex.TryConvertTo <IdentityException>(out identityEx))
{
throw identityEx;
}
}
throw;
}
JObject deserializedObject = (JObject)JsonConvert.DeserializeObject(response);
string generatedToken = (string)deserializedObject["token_type"] + " " + (string)deserializedObject["access_token"];
this.ApplicationId = (string)deserializedObject["app_id"];
this.AccessTokenExpirationInSeconds = (int)deserializedObject["expires_in"];
this.AccessTokenLastCreationDate = DateTime.Now;
return(generatedToken);
}
