Sign in user

src/controllers/AccountController.ts

@@ -1,4 +1,5 @@
 import { RequestHandler } from "../entities/RequestHandler";
+import { AccountHelper } from "../helpers/AccountHelper";
 
 /**
  * Account controller
@@ -13,9 +14,31 @@ export class AccountController {
 	 * 
 	 * @param handler 
 	 */
-	public static LoginUser(handler: RequestHandler) {
+	public static async LoginUser(handler: RequestHandler) {
 
-		handler.success("Successful operation.");
+		// Get post data
+		const email = handler.postEmail("userMail");
+		const password = handler.postString("userPassword");
+
+		// TODO : add limits
+
+		// Authenticate user
+		const tokens = await AccountHelper.LoginUser(email, password, handler.getClientInfo());
+
+		if(tokens == null) {
+			// TODO : add limits
+
+			handler.error(401, "Invalid e-mail address / password !");
+		}
+
+		// Success
+		handler.send({
+			success: "User signed in!",
+			tokens: {
+				token1: tokens.token1,
+				token2: tokens.token2
+			}
+		});
 	}
 
 }

src/entities/RequestHandler.ts

@@ -1,6 +1,7 @@
 import { Response, Request } from "express";
 import { APIHelper } from "../helpers/APIHelper";
 import { APIClient } from "./APIClient";
+import { checkMail } from "../utils/StringUtils";
 
 /**
  * Response to a request
@@ -31,7 +32,7 @@ export class RequestHandler {
 	 * @param required If set to true (true by default), an error will
 	 * be thrown if the string is not included in the request
 	 */
-	public getString(name : string, minLength : number = 1, required : boolean = true) : string {
+	public postString(name : string, minLength : number = 1, required : boolean = true) : string {
 		const param = this.getPostParam(name);
 
 		// Check if parameter was not found
@@ -47,6 +48,20 @@ export class RequestHandler {
 		return param;
 	}
 
+	/**
+	 * Get an email address included in a post request
+	 * 
+	 * @param name The name of the POST filed
+	 */
+	public postEmail(name: string) : string {
+		const email = this.postString(name, 3);
+
+		if(!checkMail(email))
+			this.error(400, email + " is not a valid email address!");
+		
+		return email;
+	}
+
 
 	/**
 	 * Validate API tokens
@@ -56,8 +71,8 @@ export class RequestHandler {
 	public async checkAPITokens() {
 
 		// Extract API name & token from request
-		const apiName = this.getString("serviceName");
-		const apiToken = this.getString("serviceToken");
+		const apiName = this.postString("serviceName");
+		const apiToken = this.postString("serviceToken");
 		
 		// Validate the client
 		const client = await APIHelper.GetClient(apiName, apiToken);
@@ -81,7 +96,18 @@ export class RequestHandler {
 	}
 
 	/**
-	 * Output an error code
+	 * Get information about API client
+	 */
+	public getClientInfo() : APIClient {
+
+		if(!this.client)
+			throw Error("Try to get information about client but client has not been authenticated!");
+
+		return this.client;
+	}
+
+	/**
+	 * Output an error code and throws an error
 	 * 
 	 * @param code HTTP Status code
 	 * @param message The message to send

src/entities/UserLoginTokens.ts

@@ -0,0 +1,12 @@
+/**
+ * User tokens
+ * 
+ * @author Pierre HUBERT
+ */
+
+export interface UserLoginTokens {
+	userID : number,
+	clientID : number,
+	token1: string,
+	token2: string,
+}

src/helpers/AccountHelper.ts

@@ -0,0 +1,102 @@
+import { crypt, sha1, randomStr } from "../utils/CryptUtils";
+import { APIClient } from "../entities/APIClient";
+import { UserLoginTokens } from "../entities/UserLoginTokens";
+import { DatabaseHelper } from "./DatabaseHelper";
+
+/**
+ * Account helper
+ * 
+ * @author Pierre HUBERT
+ */
+
+const USER_TABLE = "utilisateurs";
+const USERS_TOKENS_TABLE = "comunic_api_users_tokens";
+
+export class AccountHelper {
+
+	/**
+	 * Given email address and password, try to sign in user
+	 * 
+	 * @param email The email of the user
+	 * @param password User password
+	 * @param client Information about associated client / null if none found
+	 */
+	static async LoginUser(email: string, password: string, client: APIClient) : Promise<UserLoginTokens | null> {
+		
+		// Perform a request on the database
+		const row = await DatabaseHelper.QueryRow({
+			table: USER_TABLE,
+			fields: ["ID"],
+			where: {
+				mail: email,
+				password: this.CryptPassword(password)
+			}
+		});
+
+		// Check if user was found
+		if(row == null)
+			return null;
+		const userID = row.ID;
+
+		// Check for existing tokens
+		let tokens = await this.GetClientTokens(userID, client);
+
+		if(tokens != null)
+			return tokens;
+		
+		const newTokens : UserLoginTokens = {
+			userID: userID,
+			clientID: client.id,
+			token1: randomStr(150),
+			token2: "dummy_data"
+		}
+
+		// Save new tokens
+		await DatabaseHelper.InsertRow(USERS_TOKENS_TABLE, {
+			user_id: newTokens.userID,
+			service_id: newTokens.clientID,
+			token1: newTokens.token1,
+			token2: newTokens.token2
+		});
+
+		return newTokens;
+	}
+
+	/**
+	 * Get user client tokens (if it exists)
+	 * 
+	 * @param userID Target user ID
+	 * @param client Information about associated client / null if none found
+	 */
+	private static async GetClientTokens(userID: number, client: APIClient): Promise<UserLoginTokens | null> {
+		const row = await DatabaseHelper.QueryRow({
+			table: USERS_TOKENS_TABLE,
+			where: {
+				user_id: userID,
+				service_id: client.id
+			}
+		});
+
+		return row == null ? null : this.DBToUserTokens(row);
+	}
+
+	/**
+	 * Crypt a password
+	 * 
+	 * @param pass The password to crypt
+	 * @return Encrypted string
+	 */
+	private static CryptPassword(pass: string) : string {
+		return crypt(sha1(pass), sha1(pass));
+	}
+
+
+	private static DBToUserTokens(row : any) : UserLoginTokens {
+		return {
+			userID: row.user_id,
+			clientID: row.service_id,
+			token1: row.token1,
+			token2: row.token2
+		};
+	}
+}

src/helpers/DatabaseHelper.ts

@@ -9,6 +9,7 @@ import { conf } from "./ConfigHelper";
 
 export interface QueryInformation {
 	table: string,
+	fields ?: Array<String>,
 	where ?: Object,
 	limit ?: number,
 }
@@ -51,7 +52,12 @@ export class DatabaseHelper {
 	 */
 	static async Query(info: QueryInformation) : Promise<Array<any>> {
 		// Prepare SQL request
-		let request = "SELECT * FROM " + info.table;
+		let request = "SELECT ";
+		
+		// Requested fields
+		request += info.fields ? info.fields.join(",") : "*";
+		
+		request += " FROM " + info.table;
 		let args = [];
 
 		// Add where arguments
@@ -61,7 +67,7 @@ export class DatabaseHelper {
 			for(const k in info.where) {
 				if(!info.where.hasOwnProperty(k))
 					continue;
-				const v = info.where[k];
+				const v = info.where[k].toString();
 
 				request += k;
 				request += v.startsWith("%") || v.endsWith("%") ? " LIKE " : " = "
@@ -107,4 +113,21 @@ export class DatabaseHelper {
 		
 		return result[0];
 	}
+
+	/**
+	 * Insert an new entry into the database
+	 * 
+	 * @param info Information about the entry
+	 * @returns The ID of the inserted column (if any)
+	 */
+	static async InsertRow(table : string, values : any) : Promise<number> {
+		return new Promise((resolve, reject) => {
+			this.connection.query("INSERT INTO " + table + " SET ?", values, (err, results, fields) => {
+				if(err)
+					reject(err);
+				
+				resolve(results.insertId);
+			});
+		});
+	}
 }

src/utils/CryptUtils.ts

@@ -27,4 +27,29 @@ export function sha1(str : string) : string {
  */
 export function crypt(str : string, salt: string) : string {
 	return execSync("/usr/bin/php -r \"echo crypt(\'"+str+"\', \'"+salt+"\');\"").toString();
+}
+
+/**
+ * Generate a random integer
+ * 
+ * @param max Maximum value to except
+ */
+export function randInt(max: number) : number {
+	return Math.floor(Math.random() * Math.floor(max));
+}
+
+/**
+ * Generate a random string
+ * 
+ * @param length The length of the string to generate
+ * @param keyspace Keyspace to use
+ */
+export function randomStr(length: number, keyspace : string = "0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ") : string {
+	let str = "";
+
+	for (let i = 0; i < length; i++) {
+		str += keyspace[randInt(keyspace.length)];
+	}
+
+	return str;
 }

src/utils/StringUtils.ts

@@ -0,0 +1,15 @@
+/**
+ * String utilities
+ * 
+ * @author Pierre HUBERT
+ */
+
+/**
+ * Check a given email address
+ * 
+ * @param {String} emailAddress The email address to check
+ * @return {Boolean} True for a valid email address / false else
+ */
+export function checkMail(emailAddress: string): boolean {
+	return (emailAddress.match(/^[a-zA-Z0-9_.]+@[a-zA-Z0-9-.]{1,}[.][a-zA-Z]{2,8}$/) === null ? false : true);
+}