package oauth.signpost.signature;
import java.util.Iterator;
import oauth.signpost.OAuth;
import oauth.signpost.http.HttpParameters;
import oauth.signpost.http.HttpRequest;
/**
* Writes to the HTTP Authorization header field.
*
* @author Matthias Kaeppler
*/
public class AuthorizationHeaderSigningStrategy implements SigningStrategy {
private static final long serialVersionUID = 1L;
public String writeSignature(String signature, HttpRequest request,
HttpParameters requestParameters) {
StringBuilder sb = new StringBuilder();
sb.append("OAuth ");
// add the realm parameter, if any
if (requestParameters.containsKey("realm")) {
sb.append(requestParameters.getAsHeaderElement("realm"));
sb.append(", ");
}
// add all (x_)oauth parameters
HttpParameters oauthParams = requestParameters.getOAuthParameters();
oauthParams.put(OAuth.OAUTH_SIGNATURE, signature, true);
Iterator<String> iter = oauthParams.keySet().iterator();
while (iter.hasNext()) {
String key = iter.next();
sb.append(oauthParams.getAsHeaderElement(key));
if (iter.hasNext()) {
sb.append(", ");
}
}
String header = sb.toString();
OAuth.debugOut("Auth Header", header);
request.setHeader(OAuth.HTTP_AUTHORIZATION_HEADER, header);
return header;
}
}