Package com.baasbox.service.sociallogin.extractors

Source Code of com.baasbox.service.sociallogin.extractors.GithubTokenExtractor

/*
* Copyright (c) 2014.
*
* BaasBox - info-at-baasbox.com
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/

package com.baasbox.service.sociallogin.extractors;


import java.util.regex.Matcher;
import java.util.regex.Pattern;

import org.scribe.exceptions.OAuthException;
import org.scribe.extractors.AccessTokenExtractor;
import org.scribe.model.Token;
import org.scribe.utils.Preconditions;

public class GithubTokenExtractor implements AccessTokenExtractor
{

  private Pattern accessTokenPattern = Pattern.compile("access_token=([^&]+)");

  public Token extract(String response)
  {
    Preconditions.checkEmptyString(response,
        "Cannot extract a token from a null or empty String");
    Matcher matcher = accessTokenPattern.matcher(response);
    if (matcher.find())
    {
      return new Token(matcher.group(1), "", response);
    }
    else
    {
      throw new OAuthException(
          "Cannot extract an access token. Response was: " + response);
    }
  }
}
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