/// <summary>
/// Authenticates the server response by reading the Server-Authorization header and creates
/// the the HTTP Authorization header in hawk scheme.
/// </summary>
/// <param name="options">Hawk authentication options</param>
public HawkClient(ClientOptions options)
{
if (options == null || options.CredentialsCallback == null)
throw new ArgumentNullException("Invalid Hawk authentication options. Credentials callback cannot be null.");
this.options = options;
}
static void Main(string[] args)
{
string uri = "http://localhost:12345/values";
var credential = new Credential()
{
Id = "dh37fgj492je",
Algorithm = SupportedAlgorithms.SHA256,
User = "******",
Key = "werxhqb98rpaxn39848xrunpaw3489ruxnpa98w4rxn"
};
// GET and POST using the Authorization header
var options = new ClientOptions()
{
CredentialsCallback = () => credential,
RequestPayloadHashabilityCallback = (r) => true,
NormalizationCallback = (req) =>
{
string name = "X-Request-Header-To-Protect";
return req.Headers.ContainsKey(name) ?
name + ":" + req.Headers[name].First() : null;
}
};
var handler = new HawkValidationHandler(options);
HttpClient client = HttpClientFactory.Create(handler);
client.DefaultRequestHeaders.Add("X-Request-Header-To-Protect", "secret");
var response = client.GetAsync(uri).Result;
Console.WriteLine(response.Content.ReadAsStringAsync().Result);
response = client.PostAsJsonAsync(uri, credential.User).Result;
Console.WriteLine(response.Content.ReadAsStringAsync().Result);
// GET using Bewit
var hawkClient = new HawkClient(options);
var request = new HttpRequestMessage() { RequestUri = new Uri(uri) };
string bewit = hawkClient.CreateBewit(new WebApiRequestMessage(request),
lifeSeconds: 60);
// Bewit is handed off to a client needing temporary access to the resource.
var clientNeedingTempAccess = new WebClient();
var resource = clientNeedingTempAccess.DownloadString(uri + "?bewit=" + bewit);
Console.WriteLine(resource);
Console.Read();
}
internal static HawkClient Create(Func<Credential> callback = null,
Func<IRequestMessage, string> normalizationCallback = null,
Func<IRequestMessage, bool> requestPayloadHashabilityCallback = null,
Func<IResponseMessage, string, bool> verificationCallback = null)
{
var options = new ClientOptions()
{
LocalTimeOffsetMillis = 0,
EnableResponseValidation = true,
EnableAutoCompensationForClockSkew = true,
CredentialsCallback = callback ?? (() => ServerFactory.DefaultCredential),
NormalizationCallback = normalizationCallback,
RequestPayloadHashabilityCallback = requestPayloadHashabilityCallback,
VerificationCallback = verificationCallback
};
return new HawkClient(options);
}