/// <summary>
/// Get the temporary OAuth token & secret necessary for the user logging in
/// </summary>
/// <returns></returns>
public static async Task<string> getTemporaryCredentials()
{
string baseURL = App.baseURL;
HttpClient client = new HttpClient();
OAuthBaseUpdated oauth = new OAuthBaseUpdated(); // authentication helper
Utility util = new Utility(); // contains helper functions
baseURL = string.Format("{0}/oauth/request_token?scope=listings_r transactions_r cart_rw feedback_r profile_r profile_w email_r address_r address_w favorites_rw", App.baseURL); // base url with permissions
string nonce = oauth.GenerateNonce(); // nonce
string timeStamp = oauth.GenerateTimeStamp(); // time stamp
string callback_url = "http://localhost"; //Uri.EscapeDataString("http://localhost");
string parametersBase = "&oauth_consumer_key=" + App.key
+ "&oauth_nonce=" + nonce
+ "&oauth_timestamp=" + timeStamp
+ "&oauth_signature_method=HMAC-SHA1"
+ "&oauth_callback=" + callback_url // doesn't get used
+ "&oauth_version=1.0";
string signature = oauth.GenerateSignature( // Signature
new Uri(baseURL),
callback_url,
App.key,
App.sharedSecret,
"",
"",
"GET",
timeStamp,
"",
nonce,
out baseURL,
out parametersBase);
baseURL = string.Format("{0}?{1}&oauth_signature={2}", baseURL,
parametersBase,
oauth.UrlEncode(signature)); // final URL
try
{
var ree = await client.GetStringAsync(new Uri(baseURL));
string response = System.Net.WebUtility.UrlDecode(ree); // Decode response from URL format to string
// Make use of the response. Get token and token secret
util.parseOAuthResponse(response,
out App.login_url,
out App.oauth_token,
out App.oauth_token_secret,
out App.oauth_callback_confirmed);
}
catch (Exception e)
{
string mes = "ERROR: " + e.Message;
return mes;
}
return App.login_url;
}
/// <summary>
/// Request permanent OAuth token credentials
/// Sign the request with the OAuth token, OAuth token_secret, and OAuth verifier
/// </summary>
/// <param name="oauth_verifier"></param>
/// <returns></returns>
public static async Task getAccessToken(string oauth_verifier)
{
string baseURL = App.baseURL;
HttpClient client = new HttpClient();
OAuthBaseUpdated oauth_new = new OAuthBaseUpdated(); // authentication helper
Utility util = new Utility(); // contains helper functions
baseURL = string.Format("{0}/oauth/access_token", App.baseURL); // base url with permissions
string nonce = oauth_new.GenerateNonce(); // nonce
string timeStamp = oauth_new.GenerateTimeStamp(); // time stamp
string parametersBase = "&oauth_consumer_key=" + App.key
+ "&oauth_token=" + App.oauth_token
+ "&oauth_nonce=" + nonce
+ "&oauth_timestamp=" + timeStamp
+ "&oauth_signature_method=HMAC-SHA1"
+ "&oauth_verifier=" + oauth_verifier
+ "&oauth_version=1.0";
string signature = oauth_new.GenerateSignature(new Uri(baseURL), "https://localhost", App.key, App.sharedSecret, App.oauth_token, App.oauth_token_secret, "GET", timeStamp, oauth_verifier, nonce, out baseURL, out parametersBase);
baseURL = string.Format("{0}?{1}&oauth_signature={2}", baseURL,
parametersBase,
oauth_new.UrlEncode(signature)); // final URL
try
{
var ree = await client.GetStringAsync(new Uri(baseURL));
string response = System.Net.WebUtility.UrlDecode(ree); // Decode response from URL format to string
// Make use of the response. Get permanent access token and access token secret
util.parseAccessTokenResponse(response,
out App.access_token,
out App.access_token_secret);
// Write the access token and access token secret to storage
await FileIO.EncryptAndSave(App.access_token, "access_token"); // encrypt & save to storage
await FileIO.EncryptAndSave(App.access_token_secret, "access_token_secret");
}
catch (Exception e)
{
string mes = e.Message;
}
return;
}
/// <summary>
/// Add OAuth 1.0 authentication to the specified request type
/// </summary>
/// <param name="baseURL"></param>
/// <returns></returns>
public static string addAuthentication(string baseURL, List<Parameter> parameters, string REST_method) // "..." is the value, which must be URL encoded
{
if (REST_method != "GET" && REST_method != "POST" && REST_method != "DELETE" && REST_method != "PUT")
REST_method = "GET"; // default to a GET request
OAuthBaseUpdated oauth_new = new OAuthBaseUpdated(); // authentication helper
string nonce = oauth_new.GenerateNonce(); // nonce
string timeStamp = oauth_new.GenerateTimeStamp(); // time stamp
string parametersBase = "&oauth_consumer_key=" + App.key
+ "&oauth_token=" + App.access_token
+ "&oauth_nonce=" + nonce
+ "&oauth_timestamp=" + timeStamp
+ "&oauth_signature_method=HMAC-SHA1"
+ "&oauth_version=1.0";
string uriString = baseURL + "?"; // build uri that must be placed in signature
for (int i = 0; i < parameters.Count; i++)
{
uriString += parameters[i].key + "=" + Uri.EscapeDataString(parameters[i].value); // must URL encode parameterValue
if (i < parameters.Count - 1)
uriString += "&";
}
string signature = oauth_new.GenerateSignature(new Uri(uriString), // must URL encode parameterValue
"", App.key, App.sharedSecret, App.access_token, App.access_token_secret, REST_method, timeStamp, "", nonce, out baseURL, out parametersBase);
baseURL = string.Format("{0}?{1}&oauth_signature={2}", baseURL,
parametersBase,
oauth_new.UrlEncode(signature)); // final URL
return baseURL;
}