com.aliyuncs.auth.RpcSignatureComposer Maven / Gradle / Ivy

Go to download
Show more of this group Show more artifacts with this name
Show all versions of aliyun-java-sdk-core Show documentation
There is a newer version: 4.7.3
/*
 * 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.aliyuncs.auth;

import java.io.UnsupportedEncodingException;
import java.util.Arrays;
import java.util.HashMap;
import java.util.Map;

import com.aliyuncs.http.FormatType;
import com.aliyuncs.http.MethodType;
import com.aliyuncs.utils.ParameterHelper;

public class RpcSignatureComposer implements ISignatureComposer {

    private static ISignatureComposer composer = null;
    private final static String SEPARATOR = "&";

    private RpcSignatureComposer() {

    }

    @Override
    public Map refreshSignParameters(Map parameters,
                                                     Signer signer, String accessKeyId, FormatType format) {
        Map immutableMap = new HashMap(parameters);
        immutableMap.put("Timestamp", ParameterHelper.getISO8601Time(null));
        immutableMap.put("SignatureMethod", signer.getSignerName());
        immutableMap.put("SignatureVersion", signer.getSignerVersion());
        immutableMap.put("SignatureNonce", ParameterHelper.getUniqueNonce());
        immutableMap.put("AccessKeyId", accessKeyId);
        if (null != format) {
            immutableMap.put("Format", format.toString());
        }
        if (signer.getSignerType() != null) {
            immutableMap.put("SignatureType", signer.getSignerType());
        }
        return immutableMap;
    }

    @Override
    public String composeStringToSign(MethodType method, String uriPattern,
                                      Signer signer, Map queries,
                                      Map headers, Map paths) {

        String[] sortedKeys = queries.keySet().toArray(new String[] {});
        Arrays.sort(sortedKeys);
        StringBuilder canonicalizedQueryString = new StringBuilder();
        try {
            for (String key : sortedKeys) {
                canonicalizedQueryString.append("&")
                        .append(AcsURLEncoder.percentEncode(key));
                String value = queries.get(key);
                if (value == null || value.isEmpty()) {
                    continue;
                }
                canonicalizedQueryString.append("=").append(AcsURLEncoder.percentEncode(value));
            }

            StringBuilder stringToSign = new StringBuilder();
            stringToSign.append(method.toString());
            stringToSign.append(SEPARATOR);
            stringToSign.append(AcsURLEncoder.percentEncode("/"));
            stringToSign.append(SEPARATOR);
            stringToSign.append(AcsURLEncoder.percentEncode(
                canonicalizedQueryString.toString().substring(1)));

            return stringToSign.toString();
        } catch (UnsupportedEncodingException exp) {
            throw new RuntimeException("UTF-8 encoding is not supported.");
        }

    }

    public static ISignatureComposer getComposer() {
        if (null == composer) { composer = new RpcSignatureComposer(); }
        return composer;
    }
}