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dougculnanedougculnane
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Java REST API implementation. (#147)
1 parent 807f201 commit 8f4034b

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lines changed

‎pom.xml‎

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<module>saic-java-client</module>
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<module>saic-java-api-gateway</module>
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<module>saic-java-api-cli</module>
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<module>saic-java-rest-api</module>
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<module>saic-java-rest-client</module>
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<module>saic-java-mqtt-gateway</module>
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</modules>
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<scm>

‎saic-java-rest-api/pom.xml‎

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<?xml version="1.0" encoding="UTF-8"?>
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<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
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<modelVersion>4.0.0</modelVersion>
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<parent>
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<groupId>io.github.saic-ismart-api</groupId>
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<artifactId>saic-ismart-api-parent</artifactId>
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<version>0.0.0-SNAPSHOT</version>
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</parent>
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<artifactId>saic-java-rest-api</artifactId>
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<name>SAIC Java REST API</name>
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<description>Implementation of the SAIC Rest API in Java</description>
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</project>

‎saic-java-rest-api/src/main/java/net/heberling/ismart/java/rest/AESUtils.java‎

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package net.heberling.ismart.java.rest;
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import java.nio.charset.StandardCharsets;
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import javax.crypto.Cipher;
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import javax.crypto.spec.IvParameterSpec;
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import javax.crypto.spec.SecretKeySpec;
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public class AESUtils {
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public static final String AES = "AES";
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public static String decrypt(String cipherText, String hexKey, String hexIV) {
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if (StringUtils.isEmpty(cipherText)
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|| StringUtils.isEmpty(hexKey)
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|| StringUtils.isEmpty(hexIV)) {
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return null;
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}
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try {
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SecretKeySpec secretKeySpec = new SecretKeySpec(HexUtils.hexToBytes(hexKey), AES);
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IvParameterSpec ivParameterSpec = new IvParameterSpec(HexUtils.hexToBytes(hexIV));
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Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding");
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cipher.init(2, secretKeySpec, ivParameterSpec);
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return new String(cipher.doFinal(HexUtils.hexToBytes(cipherText)), StandardCharsets.UTF_8);
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} catch (Exception e2) {
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throw new RuntimeException(e2);
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}
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}
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public static String encrypt(String plainText, String hexKey, String hexIV) {
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if (StringUtils.isEmpty(plainText)
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|| StringUtils.isEmpty(hexKey)
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|| StringUtils.isEmpty(hexIV)) {
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return null;
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}
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try {
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SecretKeySpec secretKeySpec = new SecretKeySpec(HexUtils.hexToBytes(hexKey), AES);
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IvParameterSpec ivParameterSpec = new IvParameterSpec(HexUtils.hexToBytes(hexIV));
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Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding");
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cipher.init(1, secretKeySpec, ivParameterSpec);
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return HexUtils.bytesToHex(cipher.doFinal(plainText.getBytes(StandardCharsets.UTF_8)));
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} catch (Exception e2) {
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throw new RuntimeException(e2);
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}
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}
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}

‎saic-java-rest-api/src/main/java/net/heberling/ismart/java/rest/APIConfig.java‎

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package net.heberling.ismart.java.rest;
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public final class APIConfig {
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public static final String CONTENT_ENCRYPTED = "1";
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public static final String PARAM_AUTHENTICATION = "Basic c3dvcmQ6c3dvcmRfc2VjcmV0";
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public static final String TENANT_ID = "459771";
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public static final String USER_TYPE = "app";
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}

‎saic-java-rest-api/src/main/java/net/heberling/ismart/java/rest/EncryptionUtils.java‎

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package net.heberling.ismart.java.rest;
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public class EncryptionUtils {
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private EncryptionUtils() {}
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public static String calculateRequestVerification(
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String resourcePath,
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long sendDate,
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String tenant,
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String contentType,
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String bodyEncrypted,
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String token) {
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String str9 = resourcePath + tenant + token + APIConfig.USER_TYPE;
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String a2 = HashUtils.md5(str9);
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String str10 = sendDate + APIConfig.CONTENT_ENCRYPTED + contentType;
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String a3 = HashUtils.md5(a2 + str10);
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String str11 =
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resourcePath
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+ tenant
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+ token
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+ APIConfig.USER_TYPE
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+ sendDate
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+ APIConfig.CONTENT_ENCRYPTED
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+ contentType
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+ bodyEncrypted;
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String a5 = HashUtils.md5(a3 + sendDate);
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if (!StringUtils.isEmpty(a5) && !StringUtils.isEmpty(str11)) {
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return MacUtils.hmacSha256(a5.getBytes(), str11);
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}
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return "";
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}
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public static String decryptResponse(String timeStamp, String contentType, String cipherText) {
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String str4 = timeStamp + APIConfig.CONTENT_ENCRYPTED + contentType;
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String a2 = StringUtils.isEmpty(str4) ? "" : HashUtils.md5(str4);
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String hashedTimeStamp = HashUtils.md5(timeStamp);
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if (!StringUtils.isEmpty(cipherText)) {
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return AESUtils.decrypt(cipherText, a2, hashedTimeStamp);
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}
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return "";
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}
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public static String calculateResponseVerification(String str, String str2, String str3) {
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String str4 = str + APIConfig.CONTENT_ENCRYPTED + str2;
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String a2 = StringUtils.isEmpty(str4) ? "" : HashUtils.md5(str4);
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String str5 = str + APIConfig.CONTENT_ENCRYPTED + str2 + str3;
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String a4 = HashUtils.md5(a2 + str);
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if (!StringUtils.isEmpty(a4) && !StringUtils.isEmpty(str5)) {
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return MacUtils.hmacSha256(a4.getBytes(), str5);
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}
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return "";
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}
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public static final String BASE_URL_P = "https://gateway-mg-eu.soimt.com/api.app/v1/";
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public static String encryptRequest(
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String url, long time, String tenant, String token, String body, String contentType) {
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String sendDate = String.valueOf(time);
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// tenant
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String replace = !StringUtils.isEmpty(url) ? url.replace(BASE_URL_P, "/") : "";
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String encryptedBody = "";
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if (!StringUtils.isEmpty(body)) {
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String sb3 =
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HashUtils.md5(replace + tenant + token + APIConfig.USER_TYPE)
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+ sendDate
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+ APIConfig.CONTENT_ENCRYPTED
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+ contentType;
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String a2 = HashUtils.md5(sb3);
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String a3 = HashUtils.md5(sendDate);
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if (!StringUtils.isEmpty(body) && !StringUtils.isEmpty(a2) && !StringUtils.isEmpty(a3)) {
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encryptedBody = AESUtils.encrypt(body, a2, a3);
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}
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}
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if (encryptedBody == null) {
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encryptedBody = "";
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}
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return encryptedBody;
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}
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public static String decryptRequest(
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String url, long time, String tenant, String token, String body, String contentType) {
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String timeStamp = String.valueOf(time);
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String resourcePath = !StringUtils.isEmpty(url) ? url.replace(BASE_URL_P, "/") : "";
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if (!StringUtils.isEmpty(body)) {
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String sb3 =
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HashUtils.md5(resourcePath + tenant + token + APIConfig.USER_TYPE)
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+ timeStamp
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+ APIConfig.CONTENT_ENCRYPTED
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+ contentType;
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String a2 = HashUtils.md5(sb3);
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String timeStampHash = HashUtils.md5(timeStamp);
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if (!StringUtils.isEmpty(body)
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&& !StringUtils.isEmpty(a2)
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&& !StringUtils.isEmpty(timeStampHash)) {
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return AESUtils.decrypt(body, a2, timeStampHash);
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}
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}
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return null;
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}
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}

‎saic-java-rest-api/src/main/java/net/heberling/ismart/java/rest/HashUtils.java‎

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package net.heberling.ismart.java.rest;
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import java.nio.charset.StandardCharsets;
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import java.security.MessageDigest;
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import java.security.NoSuchAlgorithmException;
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public class HashUtils {
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public static final String MD5 = "MD5";
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public static final String SHA_1 = "SHA1";
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public static final String SHA_256 = "SHA-256";
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public static String md5(String str) {
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try {
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MessageDigest messageDigest = MessageDigest.getInstance(MD5);
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messageDigest.update(str.getBytes(StandardCharsets.UTF_8));
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byte[] digest = messageDigest.digest();
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return HexUtils.bytesToHex(digest);
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} catch (NoSuchAlgorithmException e2) {
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throw new RuntimeException(e2);
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}
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}
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public static String sha1(String str) {
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try {
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MessageDigest messageDigest = MessageDigest.getInstance(SHA_1);
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messageDigest.update(str.getBytes(StandardCharsets.UTF_8));
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return HexUtils.bytesToHex(messageDigest.digest());
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} catch (NoSuchAlgorithmException e) {
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throw new RuntimeException(e);
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}
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}
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public static String sha256(String str) {
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try {
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MessageDigest messageDigest = MessageDigest.getInstance(SHA_256);
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messageDigest.update(str.getBytes(StandardCharsets.UTF_8));
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return HexUtils.bytesToHex(messageDigest.digest());
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} catch (NoSuchAlgorithmException e) {
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throw new RuntimeException(e);
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}
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}
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}

‎saic-java-rest-api/src/main/java/net/heberling/ismart/java/rest/HexUtils.java‎

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package net.heberling.ismart.java.rest;
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public class HexUtils {
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public static String bytesToHex(byte[] byteArray) {
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StringBuilder hexStringBuffer = new StringBuilder();
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for (int i = 0; i < byteArray.length; i++) {
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hexStringBuffer.append(byteToHex(byteArray[i]));
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}
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return hexStringBuffer.toString();
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}
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public static String byteToHex(byte num) {
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return String.format("%02x", num);
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}
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public static byte[] hexToBytes(String hexString) {
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if (hexString.length() % 2 == 1) {
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throw new IllegalArgumentException("Invalid hexadecimal String supplied.");
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}
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byte[] bytes = new byte[hexString.length() / 2];
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for (int i = 0; i < hexString.length(); i += 2) {
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bytes[i / 2] = hexToByte(hexString.substring(i, i + 2));
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}
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return bytes;
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}
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public static byte hexToByte(String str) {
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return (byte) Integer.parseInt(str, 16);
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}
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}

‎saic-java-rest-api/src/main/java/net/heberling/ismart/java/rest/MacUtils.java‎

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package net.heberling.ismart.java.rest;
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import java.nio.charset.StandardCharsets;
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import java.security.InvalidKeyException;
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import java.security.NoSuchAlgorithmException;
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import javax.crypto.Mac;
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import javax.crypto.spec.SecretKeySpec;
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public class MacUtils {
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private static final String HMAC_SHA_256 = "HmacSHA256";
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public static String hmacSha256(byte[] bArr, String str) {
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try {
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Mac mac = Mac.getInstance(HMAC_SHA_256);
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mac.init(new SecretKeySpec(bArr, HMAC_SHA_256));
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return HexUtils.bytesToHex(mac.doFinal(str.getBytes(StandardCharsets.UTF_8)));
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} catch (NoSuchAlgorithmException | InvalidKeyException e) {
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throw new RuntimeException(e);
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}
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}
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}

‎saic-java-rest-api/src/main/java/net/heberling/ismart/java/rest/StringUtils.java‎

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package net.heberling.ismart.java.rest;
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public class StringUtils {
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public static boolean isEmpty(String str2) {
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return str2 == null || str2.isEmpty();
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}
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}

‎saic-java-rest-api/src/main/java/net/heberling/ismart/java/rest/api/v1/JsonResponseMessage.java‎

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package net.heberling.ismart.java.rest.api.v1;
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/**
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* @author Doug Culnane
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*/
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public abstract class JsonResponseMessage {
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public static final Integer CODE_SUCCESS = 0;
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Integer code;
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String message;
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String eventId;
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abstract Object getData();
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public boolean hasData() {
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return getData() != null;
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}
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public String getEventId() {
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return eventId;
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}
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public void setEventId(String eventId) {
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this.eventId = eventId;
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}
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public JsonResponseMessage() {}
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public Integer getCode() {
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return code;
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}
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public void setCode(Integer code) {
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this.code = code;
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}
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public String getMessage() {
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return message;
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}
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public void setMessage(String message) {
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this.message = message;
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}
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@Override
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public String toString() {
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return "[" + code + "] " + message;
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}
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public boolean isSuccess() {
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return code == CODE_SUCCESS;
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}
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}

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