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modify.php
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<!DOCTYPE html>
<html>
<head>
<title>Modify Posts & Replies</title>
<link href="https://cdn.jsdelivr.net/npm/[email protected]/dist/css/bootstrap.min.css" rel="stylesheet" integrity="sha384-BmbxuPwQa2lc/FVzBcNJ7UAyJxM6wuqIj61tLrc4wSX0szH/Ev+nYRRuWlolflfl" crossorigin="anonymous">
<link rel="stylesheet" href="css/styles.css">
</head>
<body>
<?php
require 'config.php';
require 'Post_class.php';
$admin_user = 'Zen';
$admin_pass = 'peace77()';
$user = $pass = "";
$user_err = $pass_err = "";
session_start();
if (isset($_SESSION['LAST_ACTIVITY']) && (time() - $_SESSION['LAST_ACTIVITY'] > 300)) {
// last request was more than 5 minutes ago
session_unset(); // unset $_SESSION variable for the run-time
session_destroy(); // destroy session data in storage
echo '<p class="lead mx-2">Login Expired.</p>';
}
// Retrieve ID
if(isset($_GET["id"]) && !empty(trim($_GET["id"]))){
// Get URL parameter
$id = trim($_GET["id"]);
}
if (isset($_POST['confirm'])){
// Edit/Delete Actions
$mode = $_POST["mode"];
$post_reply = intval(trim($_POST['post-reply']));
if ($mode == 'edit') {
// Edit Mode Action
// Get Post
$sql = "SELECT * FROM posts WHERE PostID = ?";
if($stmt = mysqli_prepare($conn, $sql)){
$id = trim($_POST["id"]);
// Bind variables to the prepared statement as parameters
mysqli_stmt_bind_param($stmt, "i", $param_id);
// Set parameters
$param_id = $id;
// Attempt to execute the prepared statement
if(mysqli_stmt_execute($stmt)){
$result = mysqli_stmt_get_result($stmt);
if(mysqli_num_rows($result) == 1) {
/* Fetch result row as an associative array. Since the result set
contains only one row, we don't need to use while loop */
$row = mysqli_fetch_array($result, MYSQLI_ASSOC);
// Retrieve individual field value
$post = json_decode($row["Post"]);
$replies = json_decode($row["Replies"]);
} else {
// URL doesn't contain valid id. Redirect to error page
header("location: error.php");
exit();
}
} else{
echo "Oops! Something went wrong. Please try again later.";
}
}
if ($post_reply == 0) {
// Edit Post
$id = trim($_POST["id"]);
$sql = "UPDATE posts SET Post=? WHERE PostID=?";
if($stmt = mysqli_prepare($conn, $sql)){
// Bind variables to the prepared statement as parameters
mysqli_stmt_bind_param($stmt, "si", $param_post, $param_id);
// Set parameters
$post = new Post();
$post->title = $_POST['title'];
$post->body = $_POST['body'];
$param_post = json_encode($post);
$param_id = $id;
// $post =
// Attempt to execute the prepared statement
if(mysqli_stmt_execute($stmt)){
// Records deleted successfully. Redirect to landing page
header("location: modify.php?id=" . $id);
exit();
} else{
echo "Oops! Something went wrong. Please try again later.";
}
}
// Close statement
mysqli_stmt_close($stmt);
// Close connection
mysqli_close($conn);
} else {
// Edit Reply
}
} else {
// Delete Mode Action
if ($post_reply == 0) {
// Delete Post
$sql = "DELETE FROM posts WHERE PostID = ?";
if($stmt = mysqli_prepare($conn, $sql)){
// Bind variables to the prepared statement as parameters
mysqli_stmt_bind_param($stmt, "i", $param_id);
// Set parameters
$param_id = trim($_POST["id"]);
// Attempt to execute the prepared statement
if(mysqli_stmt_execute($stmt)){
// Records deleted successfully. Redirect to landing page
header("location: index.php");
exit();
} else{
echo "Oops! Something went wrong. Please try again later.";
}
}
// Close statement
mysqli_stmt_close($stmt);
// Close connection
mysqli_close($conn);
} else {
// Get Post
$sql = "SELECT * FROM posts WHERE PostID = ?";
if($stmt = mysqli_prepare($conn, $sql)){
$id = trim($_POST["id"]);
// Bind variables to the prepared statement as parameters
mysqli_stmt_bind_param($stmt, "i", $param_id);
// Set parameters
$param_id = $id;
// Attempt to execute the prepared statement
if(mysqli_stmt_execute($stmt)){
$result = mysqli_stmt_get_result($stmt);
if(mysqli_num_rows($result) == 1) {
/* Fetch result row as an associative array. Since the result set
contains only one row, we don't need to use while loop */
$row = mysqli_fetch_array($result, MYSQLI_ASSOC);
// Retrieve individual field value
$post = json_decode($row["Post"]);
$replies = json_decode($row["Replies"]);
} else {
// URL doesn't contain valid id. Redirect to error page
header("location: error.php");
exit();
}
} else{
echo "Oops! Something went wrong. Please try again later.";
}
}
// Delete Reply
$sql = "UPDATE posts SET Replies=? WHERE PostID=?";
if($stmt = mysqli_prepare($conn, $sql)){
// Bind variables to the prepared statement as parameters
mysqli_stmt_bind_param($stmt, "si", $param_replies, $param_id);
// Set parameters
$param_id = trim($_POST["id"]);
array_splice($replies, $post_reply-1, 1);
$param_replies = json_encode($replies);
// Attempt to execute the prepared statement
if(mysqli_stmt_execute($stmt)){
// Records deleted successfully. Redirect to landing page
header("location: modify.php?id=" . $id);
exit();
} else{
echo "Oops! Something went wrong. Please try again later.";
}
}
// Close statement
mysqli_stmt_close($stmt);
// Close connection
mysqli_close($conn);
}
}
// Process Edit/Delete Transaction
} else if (isset($_POST['mode']) && !empty(trim($_POST["mode"])) && (isset($_POST['user'])) && (isset($_POST['pass']))) {
// Edit/Delete Mode
$mode = $_POST["mode"];
$post_reply = intval(trim($_POST['post-reply']));
// Edit Post
if ($mode == 'edit') {
$title_err = $body_err = $reply_err = "";
// Prepare a select statement
$sql = "SELECT * FROM posts WHERE PostID = ?";
if($stmt = mysqli_prepare($conn, $sql)){
// Bind variables to the prepared statement as parameters
mysqli_stmt_bind_param($stmt, "i", $param_id);
// Set parameters
$param_id = $id;
// Attempt to execute the prepared statement
if(mysqli_stmt_execute($stmt)){
$result = mysqli_stmt_get_result($stmt);
if(mysqli_num_rows($result) == 1) {
/* Fetch result row as an associative array. Since the result set
contains only one row, we don't need to use while loop */
$row = mysqli_fetch_array($result, MYSQLI_ASSOC);
// Retrieve individual field value
$post = json_decode($row["Post"]);
$replies = json_decode($row["Replies"]);
} else {
// URL doesn't contain valid id. Redirect to error page
header("location: error.php");
exit();
}
} else{
echo "Oops! Something went wrong. Please try again later.";
}
}
// Close statement
mysqli_stmt_close($stmt);
// Close connection
mysqli_close($conn);
if ($post_reply == 0) {
?>
<div class="wrapper">
<div class="container-fluid">
<div class="row">
<div class="col-md-12">
<div class="page-header">
<h2 class="my-3">Edit Post</h2>
</div>
<p>Change the text to change the post.</p>
<form action="<?php echo htmlspecialchars($_SERVER["PHP_SELF"]); ?>" method="post">
<div class="form-group <?php echo (!empty($title_err)) ? 'has-error' : ''; ?>">
<label>Title</label>
<input type="text" name="title" class="form-control" value="<?php echo $post->title; ?>">
<span class="help-block text-danger"><?php echo $title_err;?></span>
</div>
<div class="form-group <?php echo (!empty($body_err)) ? 'has-error' : ''; ?>">
<label>Post Body</label>
<textarea type="text" name="body" class="form-control" rows="4" cols="50"><?php echo $post->body; ?></textarea>
<span class="help-block text-danger"><?php echo $body_err;?></span>
</div>
<input type="hidden" name="mode" value="edit">
<input type="hidden" name="post-reply" value="<?php echo trim($_POST["post-reply"]); ?>">
<input type="hidden" name="id" value="<?php echo $id; ?>"/>
<input type="hidden" name="user" value="<?php echo trim($_POST["user"]); ?>"/>
<input type="hidden" name="pass" value="<?php echo trim($_POST["pass"]); ?>"/>
<input type="hidden" name="confirm" value="confirm">
<input type="submit" class="btn btn-primary mt-2" value="Submit">
<!-- <a href="modify.php?id=<?php echo $id; ?>" class="btn btn-default mt-2">Cancel</a> -->
</form>
<form method="post" class="mx-2">
<input type="hidden" name="id" value="<?php echo trim($_GET["id"]); ?>"/>
<input type="hidden" name="user" value="<?php echo trim($_POST["user"]); ?>">
<input type="hidden" name="pass" value="<?php echo trim($_POST["pass"]); ?>">
<input type="submit" value="Cancel" class="btn btn-light">
</form>
</div>
</div>
</div>
</div>
<?php
} else {
//edit reply
?>
<div class="wrapper">
<div class="container-fluid">
<div class="row">
<div class="col-md-12 p-0">
<div class="page-header">
</div>
<form action="<?php echo htmlspecialchars($_SERVER["PHP_SELF"]); ?>" method="post">
<div class="form-group <?php echo (!empty($reply_err)) ? 'has-error' : ''; ?>">
<label class="pb-2">Reply</label>
<textarea name="reply" class="form-control" rows="4" cols="50"><?php echo $replies[$post_reply-1] ?></textarea>
<span class="help-block text-danger"><?php echo $reply_err;?></span>
</div>
<input type="hidden" name="mode" value="edit">
<input type="hidden" name="post-reply" value="<?php echo trim($_POST["post-reply"]); ?>">
<input type="hidden" name="replies" value="<?php foreach ($replies as $comment) {echo "$comment+";}?>"/>
<input type="hidden" name="id" value="<?php echo $id; ?>"/>
<input type="hidden" name="user" value="<?php echo trim($_POST["user"]); ?>">
<input type="hidden" name="pass" value="<?php echo trim($_POST["pass"]); ?>">
<input type="hidden" name="confirm" value="confirm">
<input type="submit" class="btn btn-primary mt-2" value="Submit">
<!-- <a href="modify.php?id=<?php echo $id; ?>" class="btn btn-default mt-2">Cancel</a> -->
</form>
<form method="post" class="mx-2">
<input type="hidden" name="id" value="<?php echo trim($_GET["id"]); ?>"/>
<input type="hidden" name="user" value="<?php echo trim($_POST["user"]); ?>">
<input type="hidden" name="pass" value="<?php echo trim($_POST["pass"]); ?>">
<input type="submit" value="Cancel" class="btn btn-light">
</form>
</div>
</div>
</div>
</div>
<?php
}
} else {
//delete mode
if ($post_reply == 0) {
//delete post
?>
<div class="p-2">
<h1>Delete Post</h1>
<p>Are you sure you want to delete this post?</p>
<div class="d-flex">
<form action="<?php echo htmlspecialchars($_SERVER["PHP_SELF"]); ?>" method="post">
<input type="hidden" name="id" value="<?php echo trim($_GET["id"]); ?>"/>
<input type="hidden" name="mode" value="delete">
<input type="hidden" name="post-reply" value="<?php echo trim($_POST["post-reply"]); ?>">
<input type="hidden" name="user" value="<?php echo trim($_POST["user"]); ?>">
<input type="hidden" name="pass" value="<?php echo trim($_POST["pass"]); ?>">
<input type="hidden" name="confirm" value="confirm">
<input type="submit" value="Yes" class="btn btn-danger">
</form>
<form method="post" class="mx-2">
<input type="hidden" name="id" value="<?php echo trim($_GET["id"]); ?>"/>
<input type="hidden" name="user" value="<?php echo trim($_POST["user"]); ?>">
<input type="hidden" name="pass" value="<?php echo trim($_POST["pass"]); ?>">
<input type="submit" value="Cancel" class="btn btn-light">
</form>
</div>
</div>
<?php
} else {
//delete reply
?>
<div class="p-2">
<h1>Delete Reply</h1>
<p>Are you sure you want to delete this reply?</p>
<div class="d-flex">
<form action="<?php echo htmlspecialchars($_SERVER["PHP_SELF"]); ?>" method="post">
<input type="hidden" name="id" value="<?php echo trim($_GET["id"]); ?>"/>
<input type="hidden" name="mode" value="delete">
<input type="hidden" name="post-reply" value="<?php echo trim($_POST["post-reply"]); ?>">
<input type="hidden" name="user" value="<?php echo trim($_POST["user"]); ?>">
<input type="hidden" name="pass" value="<?php echo trim($_POST["pass"]); ?>">
<input type="hidden" name="confirm" value="confirm">
<input type="submit" value="Yes" class="btn btn-danger">
</form>
<form method="post" class="mx-2">
<input type="hidden" name="id" value="<?php echo trim($_GET["id"]); ?>"/>
<input type="hidden" name="user" value="<?php echo trim($_POST["user"]); ?>">
<input type="hidden" name="pass" value="<?php echo trim($_POST["pass"]); ?>">
<input type="submit" value="Cancel" class="btn btn-light">
</form>
</div>
</div>
<?php
}
}
} else if ((!isset($_POST['user'])) && (!isset($_POST['pass'])) && (!isset($_SESSION['LAST_ACTIVITY']))) {
// visitor needs to enter a name and password
?>
<div class="wrapper">
<div class="container-fluid">
<div class="row">
<div class="col-md-12">
<div class="page-header">
<h2 class="my-3">Admin Login</h2>
</div>
<p>Provide the correct credentials to edit/delete the selected post and/or it's replies.</p>
<form method="post">
<div class="form-group <?php echo (!empty($user_err)) ? 'has-error' : ''; ?>">
<label>Username</label>
<input type="text" name="user" class="form-control" id="user" /></p>
<span class="help-block text-danger"><?php echo $user_err;?></span>
</div>
<div class="form-group <?php echo (!empty($pass_err)) ? 'has-error' : ''; ?>">
<label>Password</label>
<input type="password" name="pass" class="form-control" id="pass" /></p>
<span class="help-block text-danger"><?php echo $pass_err;?></span>
</div>
<input type="hidden" name="id" value="<?php echo $id; ?>"/>
<input type="submit" class="btn btn-primary mt-2" value="Submit">
<a href="index.php" class="btn btn-default mt-2">Cancel</a>
</form>
</div>
</div>
</div>
</div>
<?php
if ((isset($_POST['user'])) || (isset($_POST['pass']))) {
// Validate Username
$input_user = filter_var(trim($_POST["user"]), FILTER_SANITIZE_STRING);
if(empty($input_user)){
$user_err = "Please enter a user.";
} else {
$user = $input_user;
}
// Validate Password
$input_pass = filter_var(trim($_POST["pass"]), FILTER_SANITIZE_STRING);
if(empty($input_pass)){
$pass_err = "Please enter a pass.";
} else {
$pass = $input_pass;
}
}
} else if(isset($_SESSION['LAST_ACTIVITY']) || ($_POST['user']==$admin_user) && ($_POST['pass']==$admin_pass)) {
// visitor's name and password combination are correct
require_once 'config.php';
if (!isset($_SESSION['LAST_ACTIVITY'])) {
$_SESSION['LAST_ACTIVITY'] = time();
// echo "Just LAST_ACTIVITY!";
// echo nl2br(" \n");
}
// echo nl2br(" \n");
// echo 'The content of $_SESSION[\'LAST_ACTIVITY\'] is ' . $_SESSION['LAST_ACTIVITY'].'<br />';
if(isset($_GET["id"]) && !empty($_GET["id"])){
// Get hidden input value
$id = $_GET["id"];
// Prepare a select statement
$sql = "SELECT * FROM posts WHERE PostID = ?";
if($stmt = mysqli_prepare($conn, $sql)){
// Bind variables to the prepared statement as parameters
mysqli_stmt_bind_param($stmt, "i", $param_id);
// Set parameters
$param_id = $id;
// Attempt to execute the prepared statement
if(mysqli_stmt_execute($stmt)){
$result = mysqli_stmt_get_result($stmt);
if(mysqli_num_rows($result) == 1) {
/* Fetch result row as an associative array. Since the result set
contains only one row, we don't need to use while loop */
$row = mysqli_fetch_array($result, MYSQLI_ASSOC);
// Retrieve individual field value
$post = json_decode($row["Post"]);
$replies = json_decode($row["Replies"]);
} else {
// URL doesn't contain valid id. Redirect to error page
header("location: error.php");
exit();
}
} else{
echo "Oops! Something went wrong. Please try again later.";
}
}
// Close statement
mysqli_stmt_close($stmt);
// Close connection
mysqli_close($conn);
} else {
// URL doesn't contain id parameter. Redirect to error page
header("location: error.php");
exit();
}
echo '<h1>Modify Posts and Replies</h1>';
echo '<div class="post-container p-3 pb-1 mb-4">';
echo '<span class="d-flex justify-content-end">';
// Edit Button
echo '<form method="post">';
echo '<input type="hidden" name="mode" value="edit">';
echo '<input type="hidden" name="post-reply" value="0">';
echo '<input type="hidden" name="user" value="'. $admin_user .'">';
echo '<input type="hidden" name="pass" value="'. $admin_pass .'">';
echo '<button class="link-button icon-button p-0">';
echo '<img id="edit-post-icon-' . $row['PostID'] . '-1" class="link-icon" src="icons/edit-pencil.svg" title="Edit Post" alt="Pencil Icon">';
echo '</button>';
echo '</form>';
// Delete Button
echo '<form method="post">';
echo '<input type="hidden" name="mode" value="delete">';
echo '<input type="hidden" name="post-reply" value="0">';
echo '<input type="hidden" name="user" value="'. $admin_user .'">';
echo '<input type="hidden" name="pass" value="'. $admin_pass .'">';
echo '<button class="link-button icon-button p-0">';
echo '<img id="delete-post-icon-' . $row['PostID'] . '-1" class="link-icon" src="icons/trash.svg" title="Delete Post" alt="Trashcan Icon">';
echo '</button>';
echo '</form>';
echo '</span>';
// echo '<span class="d-flex justify-content-end"><img id="show-hide-icon-'. $row['PostID'] .'" class="post-icon" src="icons/cheveron-down.svg" title="Hide Replies" alt="down-arrow"></span>';
if ($row['Image']) {
echo '<img class="post-image shadow" src="images/'. $row['Image'] .'"/>';
}
echo '<h2 class="post-title">' . $post->title. '</h2>';
echo '<p class="post-text">' . $post->body. '</p>';
// echo !empty($replies) ? '<p class="d-flex justify-content-end text-muted">' . count($replies). ' replies</p>' : '' ;
echo '</div>';
if ($replies) {
for ($i = 0; $i < count($replies); $i++) {
echo '<div class="reply-container p-3 pb-1 mb-4 post-reply-'. $row['PostID'] . '">';
echo '<span class="d-flex justify-content-end">';
// echo '<a href="edit_post.php?id='. $row['PostID'] . '?reply=' . $i .'" class="link-button"><img id="edit-post-icon-' . $row['PostID'] . '" class="link-icon" src="icons/edit-pencil.svg" title="Edit Post" alt="Pencil Icon"></a>';
// echo '<a href="delete_post.php?id='. $row['PostID'] . '?reply=' . $i .'" class="link-button"><img id="delete-post-icon-' . $row['PostID'] . '" class="link-icon" src="icons/trash.svg" title="Delete Post" alt="Trashcan Icon"></a>';
// Edit Button
echo '<form method="post">';
echo '<input type="hidden" name="mode" value="edit">';
echo '<input type="hidden" name="post-reply" value="'. ($i+1) .'">';
echo '<input type="hidden" name="user" value="'. $admin_user .'">';
echo '<input type="hidden" name="pass" value="'. $admin_pass .'">';
echo '<button class="link-button icon-button p-0">';
echo '<img id="edit-post-icon-' . $row['PostID'] . '-'. ($i+2) . '" class="link-icon" src="icons/edit-pencil.svg" title="Edit Post" alt="Pencil Icon">';
echo '</button>';
echo '</form>';
// Delete Button
echo '<form method="post">';
echo '<input type="hidden" name="mode" value="delete">';
echo '<input type="hidden" name="post-reply" value="'. ($i+1) .'">';
echo '<input type="hidden" name="user" value="'. $admin_user .'">';
echo '<input type="hidden" name="pass" value="'. $admin_pass .'">';
echo '<button class="link-button icon-button p-0">';
echo '<img id="delete-post-icon-' . $row['PostID'] . '-'. ($i+2) .'" class="link-icon" src="icons/trash.svg" title="Delete Post" alt="Trashcan Icon">';
echo '</button>';
echo '</form>';
echo '</span>';
echo '<p>' . $replies[$i] . '</p>';
echo '</div>';
}
}
echo '<a class="btn btn-light" href="index.php">Back</a>';
} else {
// visitor's name and password combination are not correct
echo '<h1>Incorrect Username/Password!</h1>
<p>You are not authorized to use this resource.</p>';
}
?>
<script src="https://cdn.jsdelivr.net/npm/[email protected]/dist/js/bootstrap.bundle.min.js" integrity="sha384-b5kHyXgcpbZJO/tY9Ul7kGkf1S0CWuKcCD38l8YkeH8z8QjE0GmW1gYU5S9FOnJ0" crossorigin="anonymous"></script>
</body>
</html>