Merge pull request #1 from ModaOperandi/code_refactor

Code refactor

Author: YangCaoModa

META-INF/MANIFEST.MF

@@ -1,4 +1,4 @@
 Manifest-Version: 1.0
-Implementation-Title: java-jwt-tools
+Implementation-Title: mo-jwt-java
 Implementation-Version: 0.1.0
 

README.md

@@ -1,6 +1,6 @@
 # java-jwt-tools
 
-This is a library used to get access token(JWT) from your front end, decode it, and get user's Scopes, Groups, Roles, and Permissions information.
+This is a library currently used to get access token(JWT) from your front end, decode it, and get user's Scopes, Groups, Roles, and Permissions information.
 
 To install the library, please add dependencies to your build file:
 
@@ -9,14 +9,16 @@ To install the library, please add dependencies to your build file:
     }
 
     dependencies {
-        compile 'com.github.YangCaoModa:java-jwt-tools:v0.1.1'
+        compile 'com.github.ModaOperandi:mo-jwt-java:v0.1.0'
     }
 
 
-To use JWTDecoder and JWTGetter in your controllers, please add these packages:
+To use JWTDecoder and JWTGetter in your classes, please add these packages:
 
-	import com.modaoperandi.java.jwt.tools.JWTGetter;
-	import com.modaoperandi.java.jwt.tools.JWTDecoder;
+	import com.modaoperandi.jwt.java.JWTGetter;
+	import com.modaoperandi.jwt.java.JWTDecoder;
+
+Here is an example codes to add in your controllers:
 
 	@Autowired
 	private HttpServletRequest request;

build.gradle

@@ -2,7 +2,13 @@ plugins {
     id 'java-library'
 }
 
-repositories { mavenCentral() }
+repositories { 
+	mavenCentral()
+	maven {
+		url "https://jitpack.io"
+        credentials { username  'jp_am1gb3ih8jb1jq01hdtbo1q23t' }
+	}
+}
 
 version = '0.1.0'
 

settings.gradle

@@ -7,4 +7,4 @@
  * in the user guide at https://docs.gradle.org/5.0/userguide/multi_project_builds.html
  */
 
-rootProject.name = 'java-jwt-tools'
+rootProject.name = 'mo-jwt-java'

src/main/java/com/modaoperandi/java/jwt/tools/JWTDecoder.java

@@ -0,0 +1,119 @@
+package com.modaoperandi.jwt.java;
+
+import javax.servlet.http.HttpServletRequest;
+
+import com.auth0.jwt.JWT;
+import com.auth0.jwt.exceptions.JWTDecodeException;
+import com.auth0.jwt.interfaces.DecodedJWT;
+
+public class DecodedToken {
+
+	private static final String namespace = "https://perms.moda.com/";
+	private String authToken; 
+	private String scopes;
+	private String[] groups;
+	private String[] roles;
+    private String[] permissions;
+    
+    public DecodedToken() {
+    	this.authToken = null;
+    	this.scopes = null;
+    	this.groups = null;
+    	this.roles = null;
+    	this.permissions = null;
+    }
+    
+    public DecodedToken(HttpServletRequest request) {
+    	helper(request);
+    	decodeClaims(this.authToken);
+    }
+    
+    public DecodedToken(String token) {
+    	this.authToken = token;
+    	decodeClaims(token);
+    }
+    
+	public String getToken() {
+		return this.authToken;
+	}
+	
+	public String getScopes() {
+		return this.scopes;
+	}
+	
+	public String[] getGroups() {
+		return this.groups;
+	}
+	
+	public String[] getRoles() {
+		return this.roles;
+	}
+
+	public String[] getPermissions() {
+		return this.permissions;
+	}
+	
+	public void printToken() {
+		System.out.println("-------------ACCESS TOKEN-------------");
+		System.out.println(this.authToken);
+		System.out.println("-------------ACCESS TOKEN-------------");
+	}
+	
+	public void printScopes() {
+		System.out.println("Scopes: " + this.scopes);
+	}
+	
+	public void printGroups() {
+	    System.out.println("Groups: " + arrayToString(this.groups));
+	}
+	
+	public void printRoles() {
+	    System.out.println("Roles: " + arrayToString(this.roles));
+	}
+	
+	public void printPermissions() {
+	    System.out.println("Permissions: " + arrayToString(this.permissions));
+	}
+	
+	public void printUserInfo() {
+		try {
+		    printScopes();
+		    printGroups();
+		    printRoles();
+		    printPermissions();
+		} catch (Exception e) {
+			System.err.println(e.getMessage());
+		}
+	}
+	
+	private void helper(HttpServletRequest request) {
+		try {
+			String header = request.getHeader("Authorization");
+			this.authToken = header != null ? header.substring(7) : null; 
+		} catch (Exception e) {
+			System.err.println(e.getMessage());
+		}
+	}
+	
+	private void decodeClaims(String token) {	
+    	try {
+    	    DecodedJWT jwt = JWT.decode(token);
+    	    this.scopes = jwt.getClaim("scope").asString();
+    	    this.groups = jwt.getClaim(namespace + "groups").asArray(String.class);
+    	    this.roles = jwt.getClaim(namespace + "roles").asArray(String.class);
+    	    this.permissions = jwt.getClaim(namespace + "permissions").asArray(String.class);	    
+    	} catch (NullPointerException e) {
+    		System.out.println("Token is null.");
+    	} catch (JWTDecodeException e){
+    		System.out.println("Invalid token.");
+    	}
+	}
+	
+	private String arrayToString(String[] array) {
+	    StringBuilder sb = new StringBuilder();
+	    for (String str : array) {
+	    	sb.append(str).append(" ");
+	    }
+	    return sb.toString().trim();
+	}
+}