/// <summary>
/// Signs the request using premium subscription.
/// </summary>
/// <param name="uri"></param>
/// <returns></returns>
protected virtual Uri Sign(Uri uri)
{
if (uri == null)
{
throw new ArgumentNullException(nameof(uri));
}
if (string.IsNullOrWhiteSpace(this.Key))
{
throw new ArgumentException("Invalid signing key.");
}
if (this.ClientId == null)
{
throw new NullReferenceException("ClientID");
}
if (!this.ClientId.StartsWith("gme-"))
{
throw new ArgumentException("A clientId must start with 'gme-'.");
}
var urlSegmentToSign = uri.LocalPath + uri.Query + "&client=" + this.ClientId;
var privateKey = SignableRequest.FromBase64UrlString(this.Key);
byte[] signature;
using (var algorithm = new HMACSHA1(privateKey))
{
signature = algorithm.ComputeHash(Encoding.ASCII.GetBytes(urlSegmentToSign));
}
return(new Uri(uri.Scheme + "://" + uri.Host + urlSegmentToSign + "&signature=" + SignableRequest.ToBase64UrlString(signature)));
}
internal Uri Sign(Uri _uri)
{
// Based on the C# sample from: https://developers.google.com/maps/documentation/business/webservices
if (_uri == null)
{
throw new ArgumentNullException("_uri");
}
if (this.ClientId == null)
{
throw new NullReferenceException("ClientID");
}
if (string.IsNullOrWhiteSpace(this.SigningKey))
{
throw new ArgumentException("Invalid signing key.");
}
if (!this.ClientId.StartsWith("gme-"))
{
throw new ArgumentException("A user ID must start with 'gme-'.");
}
var _urlSegmentToSign = _uri.LocalPath + _uri.Query + "&client=" + this.ClientId;
var _privateKey = SignableRequest.FromBase64UrlString(SigningKey);
byte[] _signature;
using (var _algorithm = new HMACSHA1(_privateKey))
{
_signature = _algorithm.ComputeHash(Encoding.ASCII.GetBytes(_urlSegmentToSign));
}
return(new Uri(_uri.Scheme + "://" + _uri.Host + _urlSegmentToSign + "&signature=" + SignableRequest.ToBase64UrlString(_signature)));
}