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package cn.signit.sdk.http;
/**
* The MIT License (MIT)
*
* Copyright (C) 2018 signit.cn
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
import static cn.signit.sdk.util.Validator.notNull;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.net.HttpURLConnection;
import java.security.InvalidKeyException;
import java.security.Key;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import javax.crypto.BadPaddingException;
import javax.crypto.Cipher;
import javax.crypto.IllegalBlockSizeException;
import javax.crypto.NoSuchPaddingException;
import javax.crypto.spec.SecretKeySpec;
import javax.xml.bind.DatatypeConverter;
import cn.signit.sdk.SignitException;
import cn.signit.sdk.type.TokenType;
public class Authentication {
private String appId = new String();
private String secretKey = new String();
private String accessToken = new String();
private TokenType accessTokenType;
private String cacheTokenDir = System.getProperty("java.io.tmpdir");
public Authentication() {
}
public Authentication(String apiKey, String secretKey) {
this(apiKey, secretKey, TokenType.CLIENT_CREDENTIALS);
}
public Authentication(String apiKey, String secretKey, TokenType authenticationType) {
this.appId = notNull(apiKey, "appId不可为空");
this.secretKey = notNull(secretKey, "secretKey不可为空");
this.accessTokenType = notNull(authenticationType, "tokentype不可为空");
initFromLocal();
}
/**
*
* 从本地缓存文件中中加载token,如果token已经存在，则不再读取
*
* @since 2.0.0
*/
private void initFromLocal() {
if (this.accessToken == null || this.accessToken.trim()
.equals("")) {
String filename = generateCachedTokenFilename();
if (filename != null) {
try {
File file = new File(filename);
FileInputStream fis = new FileInputStream(file);
byte[] datas = new byte[fis.available()];
// 读取数据
fis.read(datas);
String keyBase64 = "9ijhWI+0fNf0RSRJxgPt7q2zciyGVxmcco95I+gKids=";
Key key = new SecretKeySpec(DatatypeConverter.parseBase64Binary(keyBase64), "AES");
Cipher cipher = null;
// 解密
cipher = Cipher.getInstance("AES/ECB/PKCS5Padding");
cipher.init(Cipher.DECRYPT_MODE, key);
byte[] decodeResult = cipher.doFinal(datas);
// 转换为String
this.accessToken = new String(decodeResult);
fis.close();
} catch (NoSuchAlgorithmException e) {
return;
} catch (NoSuchPaddingException e) {
return;
} catch (IllegalBlockSizeException e) {
return;
} catch (BadPaddingException e) {
return;
} catch (InvalidKeyException e) {
return;
} catch (IOException e) {
return;
}
}
}
}
private String generateCachedTokenFilename() {
if (appId != null && secretKey != null && accessTokenType != null) {
StringBuffer sb = new StringBuffer();
sb = sb.append(appId)
.append(",")
.append(secretKey)
.append(",")
.append(accessTokenType);
try {
MessageDigest md5 = MessageDigest.getInstance("MD5");
md5.update(sb.toString()
.getBytes());
return cacheTokenDir.concat(DatatypeConverter.printBase64Binary(md5.digest()));
} catch (NoSuchAlgorithmException e) {
return null;
}
}
return null;
}
/**
*
* 将token缓存到本地临时文件中
*
* @since 2.0.0
*/
private void cacheToLocal() {
if (this.accessToken != null && !this.accessToken.trim()
.equals("")) {
String filename = generateCachedTokenFilename();
if (filename != null) {
try {
File file = new File(filename);
FileOutputStream fos = new FileOutputStream(file);
byte[] datas = this.accessToken.getBytes();
String keyBase64 = "9ijhWI+0fNf0RSRJxgPt7q2zciyGVxmcco95I+gKids=";
Key key = new SecretKeySpec(DatatypeConverter.parseBase64Binary(keyBase64), "AES");
Cipher cipher = null;
// 加密
cipher = Cipher.getInstance("AES/ECB/PKCS5Padding");
cipher.init(Cipher.ENCRYPT_MODE, key);
byte[] decodeResult = cipher.doFinal(datas);
fos.write(decodeResult);
fos.flush();
fos.close();
} catch (NoSuchAlgorithmException e) {
return;
} catch (NoSuchPaddingException e) {
return;
} catch (IllegalBlockSizeException e) {
return;
} catch (BadPaddingException e) {
return;
} catch (InvalidKeyException e) {
return;
} catch (IOException e) {
return;
}
}
}
}
public Authentication(Authentication clone) throws SignitException {
if (clone.hasAppId()) {
setAppId(clone.getAppId());
}
if (clone.hasAccessToken()) {
setAccessToken(clone.getAccessToken());
}
if (clone.hasSecretKey()) {
setSecretKey(clone.getSecretKey());
}
}
public String getAppId() {
return appId;
}
public Authentication setAppId(String appId) {
this.appId = appId;
return this;
}
public boolean hasAppId() {
return !("".equals(appId));
}
public String getSecretKey() {
return secretKey;
}
public Authentication setSecretKey(String secretKey) {
this.secretKey = secretKey;
return this;
}
public boolean hasSecretKey() {
return !("".equals(secretKey));
}
public String getAccessToken() {
initFromLocal();
return accessToken;
}
public void setAccessToken(String accessToken) {
this.accessToken = accessToken;
cacheToLocal();
}
public TokenType getAccessTokenType() {
return accessTokenType;
}
public void setAccessTokenType(TokenType accessTokenType) {
this.accessTokenType = accessTokenType;
}
public boolean hasAccessTokenType() {
return !("".equals(accessTokenType) || "".equals(accessTokenType));
}
public boolean hasAccessToken() {
initFromLocal();
return !("".equals(accessToken) || "".equals(accessToken));
}
public void authenticate(HttpURLConnection httpConn, String url) {
String authorization = null;
if (hasAppId()) {
String appid = getAppId() + ":";
authorization = "Basic " + DatatypeConverter.printBase64Binary(appid.getBytes())
.trim();
}
if (authorization != null) {
httpConn.setRequestProperty("authorization", authorization);
}
}
}
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