Transfer to git

includes/chat_reading.inc.php

@@ -0,0 +1,23 @@
+<?php
+
+declare(strict_types=1);
+
+if ($_SERVER["REQUEST_METHOD"] == "GET") {
+    try {
+        require_once "dbh.inc.php";
+        require_once "chat_reading_model.inc.php";
+        require_once "chat_reading_view.inc.php";
+        require_once "chat_reading_contr.inc.php";
+
+        $chat_history = get_chat_history($pdo);
+
+        display_history($chat_history);
+
+    } catch (PDOException $e) {
+        echo "An error has ocurred: " . $e->getMessage();
+        exit();
+    }
+} else {
+    echo "Wrong request type, please check your request.";
+    exit();
+}

includes/chat_reading_contr.inc.php

@@ -0,0 +1,16 @@
+<?php
+
+declare(strict_types=1);
+
+function get_chat_history(object $pdo) {
+    $chat_history = retrieve_chat_history($pdo);
+    return $chat_history;
+}
+
+function display_history(array $chat_history) {
+    render_history($chat_history);
+}
+
+function print_errors(){
+    check_errors();
+}

includes/chat_reading_model.inc.php

@@ -0,0 +1,16 @@
+<?php
+
+declare(strict_types=1);
+
+function retrieve_chat_history(object $pdo){
+    $query = "SELECT username, content, date_sent FROM comments;";
+
+    $stmt = $pdo->prepare($query);
+    $stmt->execute();
+    $chat_history = $stmt->fetchAll(PDO::FETCH_ASSOC);
+
+    $stmt = null;
+    $query = null;
+
+    return $chat_history;
+}

includes/chat_reading_view.inc.php

@@ -0,0 +1,16 @@
+<?php
+
+declare(strict_types=1);
+
+function render_history(array $chat_history){
+    $chat_history = array_reverse($chat_history,true); // Reverse display order to fix scroll direction
+    foreach ($chat_history as $message) { 
+        ?>
+        <div class="message">
+            <span class="user"><?php echo htmlspecialchars($message["username"]); ?></span>
+            <span class="content"><?php echo htmlspecialchars($message["content"]); ?></span>
+            <p class="date_sent"><?php echo htmlspecialchars($message["date_sent"]); ?></p>              
+        </div>
+        <?php
+    }
+}

includes/chat_send.inc.php

@@ -0,0 +1,57 @@
+<?php
+
+declare(strict_types=1);
+
+if ($_SERVER["REQUEST_METHOD"] == "POST") {
+    try {
+        require_once "dbh.inc.php";
+        require_once "chat_send_model.inc.php";
+        require_once "chat_send_view.inc.php";  
+        require_once "chat_send_contr.inc.php";
+        require_once "config_session.inc.php";
+
+        $errors = [];
+
+        // Check if user is logged in, if not do not check for other errors.
+        if (is_user_logged_in()){
+            $inputs = ["username"=>$_SESSION["username"],"message_content"=>$_POST["message_content"]];
+
+            if (isEmpty($inputs)) {
+                $errors = ["null_field" => "Form contains blank characters."];
+            }
+            if (!user_exists($pdo, $inputs["username"])) {
+                $errors = ["inexistent_user" => "User does not exist on db."];
+            }
+        } else {
+            $errors = ["not_logged_in" => "You haven't logged in."];
+        } 
+
+        if ($errors) {
+            $_SESSION["errors"] = $errors;
+
+            // Send back form
+            $entered_data = [
+                "message_content" => $inputs["message_content"]
+            ];
+
+            $_SESSION["entered_chat_data"] = $entered_data;
+
+            header("Location: ../chat.php");
+            $inputs = null;
+            die();
+        }
+
+        send_message($pdo, $inputs["username"], $inputs["message_content"]);
+
+        header("Location: ../chat.php");
+        $inputs = null;
+        die();
+    } catch (PDOException $e) {
+        echo "An error has ocurred: " . $e->getMessage();
+        exit();
+    }
+    
+} else {
+    echo "Wrong request type, please check your request.";
+    exit();
+}

includes/chat_send_contr.inc.php

@@ -0,0 +1,43 @@
+<?php
+
+declare(strict_types=1);
+
+function isEmpty(array $array){
+    foreach ($array as $value => $content) {
+        if (empty($content)){
+            return true;
+        } else {
+            return false;
+        }
+    }
+}
+
+function user_exists(object $pdo, string $username){
+    if (username_search($pdo, $username)) {
+        return true;
+    } else {
+        return false;
+    }
+}
+
+function send_message(object $pdo, string $username, string $content) {
+    function get_users_id(object $pdo, string $username){
+        $user_id = retrieve_user_id($pdo, $username);
+        return $user_id;
+    }
+
+    $users_id = get_users_id($pdo, $username);
+    write_message($pdo, $username, $users_id, $content);
+}
+
+function print_errors(){
+    check_errors();
+}
+
+function is_user_logged_in() {
+    if (isset($_SESSION["username"])) {
+        return true;
+    } else {
+        return false;
+    }
+}

includes/chat_send_model.inc.php

@@ -0,0 +1,49 @@
+<?php
+
+declare(strict_types=1);
+
+// Remove after sessions are secured
+function username_search(object $pdo, string $username) {
+    $query = "SELECT username FROM users WHERE username = :username;";
+
+    // Prepare and check if user already exists
+    $stmt = $pdo->prepare($query);
+    $stmt->bindParam(":username",$username);
+    $stmt->execute();
+    $result = $stmt->fetch(PDO::FETCH_ASSOC);
+
+    $stmt = null;
+    $query = null;
+
+    // True if something is found, false if not
+    return $result;
+}
+
+function retrieve_user_id(object $pdo, string $username) {
+    $query = "SELECT id FROM users WHERE username = :username;";
+
+    // Prepare and check if user already exists
+    $stmt = $pdo->prepare($query);
+    $stmt->bindParam(":username",$username);
+    $stmt->execute();
+    $result = $stmt->fetch(PDO::FETCH_ASSOC);
+
+    $stmt = null;
+    $query = null;
+
+    // True if something is found, false if not
+    return $result["id"];
+}
+
+function write_message(object $pdo, string $username, int $users_id, string $content) {
+    $query = "INSERT INTO comments (username, users_id, content) VALUES (:username, :users_id, :content);";
+
+    $stmt = $pdo->prepare($query);
+    $stmt->bindParam(':username',$username);
+    $stmt->bindParam(':users_id',$users_id);
+    $stmt->bindParam(':content',$content);
+    $stmt->execute();
+
+    $stmt = null;
+    $query = null;
+}

includes/chat_send_view.inc.php

@@ -0,0 +1,15 @@
+<?php
+
+declare(strict_types=1);
+
+function render_chat_send_form(){
+    ?>
+    <input required type="text" id="message_content" name="message_content" placeholder="Message" value=
+        <?php if(isset($_SESSION["entered_chat_data"])){
+            echo $_SESSION["entered_chat_data"]["message_content"];
+            unset($_SESSION["entered_chat_data"]);
+        } 
+        ?>>
+    </input>
+    <?php
+}

includes/comments_db.sql

@@ -0,0 +1,9 @@
+CREATE TABLE comments (
+	id INT(11) NOT NULL AUTO_INCREMENT,
+    username VARCHAR(255) NOT NULL,
+    content TEXT NOT NULL,
+    date_sent DATETIME DEFAULT CURRENT_TIME,
+    users_id INT(11) NOT NULL,
+    PRIMARY KEY (id),
+    FOREIGN KEY (users_id) REFERENCES users(id) ON DELETE NO ACTION
+);

includes/config_session.inc.php

@@ -0,0 +1,31 @@
+<?php
+
+declare(strict_types=1);
+
+ini_set('session.use_only_cookies' , 1);
+ini_set('session.use_strict_mode' , 1);
+
+session_set_cookie_params([
+    'lifetime' => 1800,
+    'domain' => 'ethernal.win',
+    'path' => '/',
+    'secure' => true,
+    'httponly' => true
+]);
+
+session_start();
+
+if ( !isset($_SESSION["last_regen"]) ){
+    session_regen();
+
+} else {
+    $timeout_m = 60 * 30; // 30 minutes
+    if ((time() - $_SESSION["last_regen"]) > $timeout_m) {
+        session_regen();
+    }
+}
+
+function session_regen() {
+    session_regenerate_id();
+    $_SESSION["last_regen"] = time();
+}

includes/error_handling.inc.php

@@ -0,0 +1,16 @@
+<?php
+
+declare(strict_types=1);
+
+if (isset($_SESSION["errors"])) {
+    $errors = $_SESSION["errors"];
+
+    foreach ($errors as $error => $error_reading) {
+        ?>
+        <br>
+        <p class="error"><?php echo $error_reading ?></p>
+        <?php
+    }
+
+    unset($_SESSION["errors"]);
+}

includes/login.inc.php

@@ -0,0 +1,65 @@
+<?php
+
+declare(strict_types=1);
+
+if ($_SERVER["REQUEST_METHOD"] == "POST") {
+
+    $inputs = [
+        "username" => $_POST["username"],
+        "pwd" => $_POST["pwd"]
+    ];
+
+    try {
+        require_once "dbh.inc.php";
+        require_once "login_model.inc.php";
+        require_once "login_view.inc.php";
+        require_once "login_contr.inc.php";
+
+        $errors = [];
+
+        if (isEmpty($inputs)) {
+            $errors = ["null_field" => "Form contains blank characters."];
+        }
+
+        if (!does_user_exist($pdo, $inputs["username"])) {
+            $errors = ["incorrect_credentials" => "Incorrect credentials"];
+        } else {
+            if (!does_Password_match($pdo, $inputs["username"], $inputs["pwd"])){
+                $errors = ["incorrect_credentials" => "Incorrect credentials"];
+            }
+        }
+
+        require_once "config_session.inc.php";
+
+        if ($errors) {
+
+            $_SESSION["errors"] = $errors;
+
+            // Send back form
+            $entered_data = [
+                "username" => $inputs["username"]
+            ];
+
+            $_SESSION["entered_login_data"] = $entered_data;
+
+            header("Location: ../chat.php");
+            
+            $inputs = null;
+            die();
+        }
+
+        $_SESSION["username"] = htmlspecialchars($inputs["username"]); 
+
+        $inputs = null;
+        header("Location: ../chat.php");
+        die();
+        
+    } catch (PDOException $e) {
+        echo "An error has ocurred: " . $e->getMessage();
+        exit();
+    }
+} else {
+    echo("Wrong request type, please check your request.");
+    header("Location: ../chat.php");
+    exit();
+}

includes/login_contr.inc.php

@@ -0,0 +1,42 @@
+<?php
+
+declare(strict_types=1);
+
+function isEmpty(array $array){
+    foreach ($array as $value => $content) {
+        if (empty($content)){
+            return true;
+        } else {
+            return false;
+        }
+    }
+}
+
+function does_Password_match(object $pdo, string $username, string $pwd) {
+    // Get hashed password from db
+    function get_hashed_password(object $pdo, string $username) {
+        $stored_pwd = retrieve_hashed_pwd($pdo, $username);
+
+        return $stored_pwd;
+    }
+    
+    $stored_pwd = get_hashed_password($pdo, $username);
+
+    if (password_verify($pwd,$stored_pwd)) {
+        return true;
+    } else {
+        return false;
+    }
+}
+
+function does_user_exist(object $pdo, string $username){
+    if (search_user($pdo, $username)){
+        return true;
+    } else {
+        return false;
+    }
+}
+
+function print_errors(){
+    check_errors();
+}

includes/login_model.inc.php

@@ -0,0 +1,34 @@
+<?php
+
+declare(strict_types=1);
+
+function retrieve_hashed_pwd(object $pdo, string $username) {
+    $query = "SELECT pwd FROM users WHERE username = :username;";
+
+    $stmt = $pdo->prepare($query);
+    $stmt->bindParam(":username",$username);
+    $stmt->execute();
+
+    $hashed_pwd = $stmt->fetch(PDO::FETCH_ASSOC);
+
+    $stmt = null;
+    $query = null;
+
+    return $hashed_pwd["pwd"];
+}
+
+function search_user(object $pdo, string $username) {
+    $query = "SELECT * FROM users WHERE username = :username;";
+
+    $stmt = $pdo->prepare($query);
+    $stmt->bindParam(":username",$username);
+    $stmt->execute();
+
+    $result = $stmt->fetch(PDO::FETCH_ASSOC);
+
+    $stmt = null;
+    $query = null;
+
+    return $result;
+
+}

includes/login_view.inc.php

@@ -0,0 +1,3 @@
+<?php
+
+declare(strict_types=1);

includes/logout.inc.php

@@ -0,0 +1,7 @@
+<?php
+
+session_start();
+session_unset();
+session_destroy();
+
+header("Location: ../chat.php");

includes/register.inc.php

@@ -0,0 +1,53 @@
+<?php
+
+declare(strict_types=1);
+
+if ($_SERVER["REQUEST_METHOD"] == "POST") {
+    $inputs = ["username"=>$_POST["username"],"pwd"=>$_POST["pwd"]];
+    
+    try {
+        require_once "dbh.inc.php";
+        require_once "register_model.inc.php";
+        require_once "register_view.inc.php";
+        require_once "register_contr.inc.php";
+
+        // Error handlers
+        $errors = [];
+        if (isEmpty($inputs)) {
+            $errors = ["null_field" => "Form contains blank characters."];
+        }
+        if (username_taken($pdo, $inputs["username"])) {
+            $errors = ["username_taken" => "Username alredy taken"];
+        }
+
+        require_once "config_session.inc.php";
+
+        if ($errors) {
+            $_SESSION["errors"] = $errors;
+
+            // Send back form
+            $entered_data = [
+                "username" => $inputs["username"]
+            ];
+
+            $_SESSION["entered_register_data"] = $entered_data;
+
+            header("Location: ../chat.php");
+            $inputs = null;
+            die();
+        }
+
+        user_register($pdo, $inputs["username"], $inputs["pwd"]);
+
+        header("Location: ../chat.php");
+        $inputs = null;
+        die();
+    } catch (PDOException $e) {
+        echo "An error has ocurred: " . $e->getMessage();
+        exit();
+    }
+    
+} else {
+    echo "Wrong request type, please check your request.";
+    exit();
+}

includes/register_contr.inc.php

@@ -0,0 +1,34 @@
+<?php
+
+declare(strict_types=1);
+
+function isEmpty(array $array){
+    foreach ($array as $value => $content) {
+        if (empty($content)){
+            return true;
+        } else {
+            return false;
+        }
+    }
+}
+
+function username_taken(object $pdo, string $username){
+    if (username_search($pdo, $username)) {
+        return true;
+    } else {
+        return false;
+    }
+}
+
+function hash_password(string $pwd) {
+    $hashed_pw = password_hash($pwd,PASSWORD_BCRYPT,["cost"=>12]);
+    return $hashed_pw;
+}
+
+function user_register(object $pdo, string $username, string $pwd) {
+    user_write($pdo, $username, hash_password($pwd));
+}
+
+function print_errors(){
+    check_errors();
+}

includes/register_model.inc.php

@@ -0,0 +1,31 @@
+<?php
+
+declare(strict_types=1);
+
+function username_search(object $pdo, string $username) {
+    $query = "SELECT username FROM users WHERE username = :username;";
+
+    // Prepare and check if user already exists
+    $stmt = $pdo->prepare($query);
+    $stmt->bindParam(":username",$username);
+    $stmt->execute();
+    $result = $stmt->fetch(PDO::FETCH_ASSOC);
+
+    $stmt = null;
+    $query = null;
+
+    // True if something is found, false if not
+    return $result;
+}
+
+function user_write(object $pdo, string $username, string $pwd) {
+    $query = "INSERT INTO users (username, pwd) VALUES (:username, :pwd)";
+
+    $stmt = $pdo->prepare($query);
+    $stmt->bindParam(":username",$username);
+    $stmt->bindParam(":pwd",$pwd);
+    $stmt->execute();
+
+    $stmt = null;
+    $query = null;
+}

includes/register_view.inc.php

@@ -0,0 +1,17 @@
+<?php
+
+declare(strict_types=1);
+
+function render_register_form(){
+    ?>
+    <input required type="text" id="username" name="username" placeholder="User" value=
+        <?php if(isset($_SESSION["entered_register_data"])){
+            echo $_SESSION["entered_register_data"]["username"];
+            unset($_SESSION["entered_register_data"]);
+        } 
+        ?>>
+    </input>
+    <input required type="password" id="password" name="pwd" placeholder="Password"></input>
+    <?php
+}
+                        

includes/users_db.sql

@@ -0,0 +1,7 @@
+CREATE TABLE users (
+	id INT(11) NOT NULL AUTO_INCREMENT,
+    username VARCHAR(255) NOT NULL,
+    pwd VARCHAR(255) NOT NULL,
+    created_at DATETIME DEFAULT CURRENT_TIME,
+    PRIMARY KEY (id)
+);