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users.php
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<?php
include ("config.php");
session_name($session_name);
session_start();
if (isset($_SESSION['username'])){
$db=new SQLite3($db_file);
if ($_SESSION['role']!="2"){
logMessage($db, "Attempt to manage user accounts without the required privileges");
header("Location: index.php");
$db->close();
die("Attempt to manage user accounts without the required privileges");
}
if (isset($_GET['action'])){
if (!isset($_POST['token']) || $_POST['token'] != $_SESSION['token']){
die("Invalid CSRF token provided.");
}
if ($_GET['action']=="edit"){
$username=SQLite3::escapeString($_POST['username']);
$fullname=SQLite3::escapeString($_POST['fullname']);
$email=SQLite3::escapeString($_POST['email']);
if ($_POST['password']!=""){
$password=password_hash(SQLite3::escapeString($_POST['password']), PASSWORD_DEFAULT);
}else{
$password="";
}
$role=SQLite3::escapeString($_POST['role']);
$userid=SQLite3::escapeString($_POST['userid']);
if ($userid==""){
$userid=$db->query("select count(*) from users")->fetchArray()[0];
$db->exec("insert into users (id, username, fullname, email, password, role) values (".$userid.", '".$username."', '".$fullname."', '".$email."', '".$password."', ".$role.")");
logMessage($db, "Created new user account: ".$username.". ".$_POST['log']);
}else{
$query="update users set username='".$username."', fullname='".$fullname."', email='".$email."', ";
if ($password!=""){
$query=$query."password='".$password."', ";
}
$query=$query."role=".$role." where id=".$userid;
$db->exec($query);
logMessage($db, "Updated user account: ".$username.". ".$_POST['log']);
}
}elseif ($_GET['action']=="delete"){
if ($_POST['deleteuser']!=$_SESSION['id']){
$db->exec("delete from users where id=".SQLite3::escapeString($_POST['deleteuser']));
$db->exec("update users set id=id-1 where id>".SQLite3::escapeString($_POST['deleteuser']));
logMessage($db, "Deleted user account: ".$_POST['deleteuser'].". ".$_POST['log']);
}
}
header("location: users.php");
}else{
include ("header.php");
set_title("Manage users");
?>
<h2>List of current registered users</h2>
<button id="adduser">Add new user</button>
<table>
<caption>List of current registered users</caption>
<thead>
<tr>
<th>ID</th>
<th>Username</th>
<th>Full name</th>
<th>E-mail address</th>
<th>Password hash</th>
<th>Role (0=author, 1=reviewer, 2=admin)</th>
<th>Edit</th>
<th>Delete</th>
</tr>
</thead>
<tbody>
<?php
$result=$db->query("select * from users");
while ($row=$result->fetchArray(SQLITE3_NUM)){
echo "<tr id='".$row[0]."'>\n";
foreach ($row as $item){
echo "<td>".$item."</td>\n";
}
echo "<td><button>Edit</button></td>\n";
echo "<td><button>Remove</button></td>\n";
echo "</tr>\n";
}
$result->finalize();
?>
</tbody>
</table>
<div id="edit-form" style="display:none" role="dialog" aria-labelledby="edit-form-title">
<h2 id="edit-form-title">Create or update user</h2>
<form method="post" action="users.php?action=edit" role="form">
<input type="hidden" name="userid" id="userid"/>
<input type="hidden" name="token" value="<?php echo $_SESSION['token']; ?>"/>
<p><label for="username">User name*</label>
<input type="text" name="username" id="username" required="" aria-required="true"/></p>
<p><label for="fullname">Full name*</label>
<input type="text" name="fullname" id="fullname" aria-required="true" required=""/></p>
<p><label for="email">E-mail address*</label>
<input type="email" name="email" id="email" required="" aria-required="true"/></p>
<p><label for="password">Password*</label>
<input type="text" name="password" id="password" required="" aria-required="true" title="Provide a password you don't use anywhere else. Leave empty if you are updating an user account and don't want to change the password"/></p>
<p><label for="role">User role*</label>
<select id="role" name="role" required="" aria-required="true">
<option id="optionAuthor" value="0">Author</option>
<option id="optionReviewer" value="1">Reviewer</option>
<option id="optionAdmin" value="2">Administrator</option>
</select></p>
<p><label for="log">Log message</label>
<textarea id="log" name="log" title="Optional log message displayed for this operation"></textarea></p>
<p><input type="submit" value="Submit"/>
<button type="button" onclick="cancelEdit();">Cancel</button></p>
</form>
</div>
<div id="delete-form" style="display:none" role="dialog" aria-labelledby="delete-form-title" aria-describedby="delete-form-description">
<h2 id="delete-form-title">Delete user from database</h2>
<form method="post" action="users.php?action=delete" role="form">
<p id="delete-form-description">Are you sure you want to remove this user from the database? This operation cannot be undone.</p>
<input type="hidden" id="deleteuser" name="deleteuser"/>
<input type="hidden" name="token" value="<?php echo $_SESSION['token']; ?>"/>
<p><label for="log2">Log message</label>
<textarea id="log2" name="log" title="Optional log message displayed for this operation"></textarea></p>
<p><input type="submit" id="confirmDelete" value="Delete user permanently"/>
<button type="button" onclick="cancelRemove();">Cancel</button></p>
</form>
</div>
<script>
let buttons=document.getElementsByTagName("button");
for (let i=0; i<buttons.length; i++){
if (buttons[i].textContent=="Edit"){
buttons[i].addEventListener("click", editUser);
}else if (buttons[i].textContent=="Remove"){
buttons[i].addEventListener("click", removeUser);
}
}
var userid=document.getElementById("userid");
var username=document.getElementById("username");
var fullname=document.getElementById("fullname");
var email=document.getElementById("email");
var password=document.getElementById("password");
var role=document.getElementById("role");
var optionAuthor=document.getElementById("optionAuthor");
var optionReviewer=document.getElementById("optionReviewer");
var optionAdmin=document.getElementById("optionAdmin");
var editform=document.getElementById("edit-form");
var deleteform=document.getElementById("delete-form");
var deleteuser=document.getElementById("deleteuser");
var focusElement=null;
function editUser(e){
focusElement=e.target;
let row=this.parentNode.parentNode;
userid.value=row.childNodes[1].textContent;
username.value=row.childNodes[3].textContent;
fullname.value=row.childNodes[5].textContent;
email.value=row.childNodes[7].textContent;
password.removeAttribute("aria-required");
password.removeAttribute("required");
switch(row.childNodes[11].textContent){
case "0":
optionAuthor.selected="selected";
break;
case "1":
optionReviewer.selected="selected";
break;
case "2":
optionAdmin.selected="selected";
break;
}
editform.style.display="block";
username.focus();
}
function removeUser(e){
focusElement=e.target;
deleteuser.value=this.parentNode.parentNode.id;
deleteform.style.display="block";
document.getElementById("confirmDelete").focus();
}
function adduser(e){
focusElement=e.target;
editform.style.display="block";
username.focus();
password.required="";
password.setAttribute("aria-required", true);
}
document.getElementById("adduser").addEventListener("click", adduser);
function cancelEdit(e){
focusElement.focus();
editform.style.display="none";
focusElement=null;
userid.value="";
username.value="";
fullname.value="";
email.value="";
password.value="";
optionAuthor.selected="selected";
}
function cancelRemove(e){
focusElement.focus();
deleteform.style.display="none";
focusElement=null;
deleteuser.value="";
}
</script>
<?php
include ("footer.php");
}
$db->close();
}else{
header("location: index.php");
}
?>