content: /*
   * Licensed to the Apache Software Foundation (ASF) under one
   * or more contributor license agreements.  See the NOTICE file
   * distributed with this work for additional information
   * regarding copyright ownership.  The ASF licenses this file
   * to you 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.aliyun.oss.internal;
  
  import com.aliyun.oss.ClientException;
  import com.aliyun.oss.common.auth.Credentials;
  import com.aliyun.oss.common.auth.RequestSigner;
  import com.aliyun.oss.common.comm.RequestMessage;
  import com.aliyun.oss.common.comm.SignVersion;
  
  public class OSSRequestSigner implements RequestSigner {
  
      private String httpMethod;
  
      /* Note that resource path should not have been url-encoded. */
      private String resourcePath;
  
      private Credentials creds;
  
      private SignVersion signatureVersion;
  
      public OSSRequestSigner(String httpMethod, String resourcePath, Credentials creds, SignVersion signatureVersion) {
          this.httpMethod = httpMethod;
          this.resourcePath = resourcePath;
          this.creds = creds;
          this.signatureVersion = signatureVersion;
      }
  
      @Override
      public void sign(RequestMessage request) throws ClientException {
          String accessKeyId = creds.getAccessKeyId();
          String secretAccessKey = creds.getSecretAccessKey();
  
          if (accessKeyId.length() > 0 && secretAccessKey.length() > 0) {
              String signature;
  
              if (signatureVersion == SignVersion.V2) {
                  signature = SignV2Utils.buildSignature(secretAccessKey, httpMethod, resourcePath, request);
                  request.addHeader(OSSHeaders.AUTHORIZATION, SignV2Utils.composeRequestAuthorization(accessKeyId,signature, request));
              } else {
                  signature = SignUtils.buildSignature(secretAccessKey, httpMethod, resourcePath, request);
                  request.addHeader(OSSHeaders.AUTHORIZATION, SignUtils.composeRequestAuthorization(accessKeyId, signature));
              }
          }
      }
  }
  