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challenges.php
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<?php
//prevent direct loading of page
if (session_id() == '') {
die();
}
$challenges = array();
$categories = array();
$user_scores = array();
function gen_submission_form($chalid, $owner) { ?>
<form class="sub-form" method="POST" action="?challenges" id="sub-<?php echo $chalid."-".$owner;?>">
<input type="hidden" name="sub-chal" value="<?php echo $chalid; ?>">
<input type="hidden" name="sub-owner" value="<?php echo $owner;?>">
<input type="textbox" value="" name="sub-flag">
<input type="submit" value="bits?">
</form><?php
}
$mysqli = setup_database();
$stmt = $mysqli->prepare("SELECT * from categories");
if (!$stmt->execute()) {
die("Execute failed: Get admin for help.");
}
$res = $stmt->get_result();
while($row= $res->fetch_assoc()) {
$categories[] = $row["category"];
}
$res->close();
$stmt->close();
$stmt = $mysqli->prepare("SELECT * from challenges where approved = 1");
if (!$stmt->execute()) {
die("Execute failed: Get admin for help.");
}
$res = $stmt->get_result();
while($row= $res->fetch_assoc()) {
$challenges[$row['title'].":".$row['owner']] = $row;
}
$res->close();
$stmt->close();
$stmt = $mysqli->prepare("SELECT user,challenge,owner from user_scores where user = ?");
$stmt->bind_param("s", $_SESSION["user"]);
if (!$stmt->execute()) {
die("Execute failed: Get admin for help.");
}
$res = $stmt->get_result();
while($row= $res->fetch_assoc()) {
$user_scores[$row['challenge'].":".$row['owner']] = $row;
}
$res->close();
$stmt->close();
$r["results"] = 0;
$r["msg"] = "";
$sub_inputs = new checkInput(array("title","sub-chal","POST"),array("user","sub-owner","POST"),array("flag","sub-flag","POST"));
if(!$sub_inputs->paramsNotSet()) {
if(!$sub_inputs->getStatus()) {
$r["msg"] = $sub_inputs->getErrors();
} else if($_POST["sub-owner"]==$_SESSION["user"]) {
$r["msg"] .= "You cannot submit a flag for your own challenge.\n";
} else if(!isset($challenges[$_POST["sub-chal"].":".$_POST["sub-owner"]])) {
$r["msg"] .= "Challenge does not exist.";
} else if(isset($user_scores[$_POST["sub-chal"].":".$_POST["sub-owner"]])) {
$r["msg"] .= "You've already scored on this challenge.";
} else if(md5($_POST["sub-flag"]) != md5($challenges[$_POST["sub-chal"].":".$_POST["sub-owner"]]["flag"])) {
$r["msg"] .= "Incorrect flag.";
log_activity($mysqli, "attempted on challenge ".$_POST['sub-chal'].":".$_POST['sub-owner']." with flag '".$_POST["sub-flag"]."'", $_SESSION["user"]);
} else {
$this_chal = $challenges[$_POST["sub-chal"].":".$_POST["sub-owner"]];
$r["msg"] = "Your flag is correct!\n";
$r["results"] = 1;
$challenges[$_POST["sub-chal"].":".$_POST["sub-owner"]]["count"] += 1;
$user_scores[$_POST["sub-chal"].":".$_POST["sub-owner"]] = "solved";
$stmt = $mysqli->prepare("UPDATE challenges set count = count +1 WHERE owner = ? AND title=? ");
$stmt->bind_param("ss", $_POST["sub-owner"], $_POST["sub-chal"]);
if (!$stmt->execute()) {
die("Execute failed: Get admin for help.");
}
$stmt->close();
$this_chal["count"] = $this_chal["count"] + 1;
$stmt = $mysqli->prepare("INSERT INTO user_scores(user,challenge,owner,timestamp,ip) VALUES (?,?,?,?,?)");
$date = date ("Y-m-d H:i:s", time());
$stmt->bind_param("sssss", $_SESSION["user"], $_POST["sub-chal"], $_POST["sub-owner"], $date, $_SERVER['REMOTE_ADDR']);
if (!$stmt->execute()) {
die("Execute failed: Get admin for help.");
}
log_activity($mysqli, "scored on challenge ".$_POST['sub-chal'].":".$_POST['sub-owner']." with flag '".$_POST["sub-flag"]."'", $_SESSION["user"]);
}
if(isset($_POST['ajax'])) {
echo json_encode($r);
die();
}
if($r["results"] == 1 && $r["msg"]!="") {
$output .="<div class='success'>".$r["msg"]."</div>";
} else {
$output .="<div class='error'>".newline_to_ul_list($r["msg"])."</div>";
}
}
$mysqli->close();
?>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title><?php echo TITLE; ?> | Challenges</title>
<link rel="stylesheet" href="themes/<?php echo THEME;?>.css">
<link href='http://fonts.googleapis.com/css?family=Open+Sans' rel='stylesheet' type='text/css'>
<script type="text/javascript" src="js/jquery.js"></script>
<script type="text/javascript">
ANIMATION_TIME = 100;
function updateSelectors() {
$(".selector span").each(function() {
setVisible = 0;
if($(".challenge div.class:contains('"+$(this).text()+"')").parent().parent().is(":visible")) {
setVisible = 1;
}
if(setVisible) {
$(this).removeClass("off").addClass("on");
}
else {
$(this).removeClass("off").addClass("off");
}
if(!$(".challenge div.class:contains('"+$(this).text()+"')").length) {
$(this).hide();
}
});
}
function collapseAll() {
$(".challenge div.details").hide(ANIMATION_TIME);
}
function expandAll() {
$(".challenge div.details").show(ANIMATION_TIME);
}
function showAll() {
$(".challenge").show(ANIMATION_TIME);
setTimeout('updateSelectors();',ANIMATION_TIME);
}
function showSolved() {
$(".challenge:not(:has(div.solved))").hide(ANIMATION_TIME);
$(".challenge:has(div.solved)").show(ANIMATION_TIME);
setTimeout('updateSelectors();',ANIMATION_TIME*2); // bad fix, find better way.
}
function showUnsolved() {
$(".challenge:not(:has(div.solved))").show(ANIMATION_TIME);
$(".challenge:has(div.solved)").hide(ANIMATION_TIME);
setTimeout('updateSelectors();',ANIMATION_TIME*2); // bad fix. find better way.
}
$(function() {
updateSelectors();
$(".selector span").addClass("on");
$(".challenge div.title").click(function() {
$( this ).siblings(".details").toggle(ANIMATION_TIME);
});
$(".selector span").click(function() {
selection = $( this ).text();
if($(this).hasClass("off")) {
$(this).removeClass("off").addClass("on");
$(".challenge div.class:contains('"+selection+"')").parent().parent().show(ANIMATION_TIME);
} else {
$(this).removeClass("off").addClass("off");
$(".challenge div.class:contains('"+selection+"')").parent().parent().hide(ANIMATION_TIME);
}
});
});
</script>
<?php include("head.php"); ?>
</head>
<body>
<?php include("navigation.html"); ?>
<div class="content">
<?php
if($output != "") {
echo $output;
}
?><br />
<div class="selector">
<?php foreach ($categories as $cat) { ?>
<span><?php echo $cat; ?></span>
<?php } ?><br /><br />
<a href="javascript:collapseAll();">Collapse All</a> . <a href="javascript:expandAll();">Expand All</a> . <a href="javascript:showAll();">Show All</a> . <a href="javascript:showSolved();">Show Solved</a> . <a href="javascript:showUnsolved();">Show Unsolved</a></div>
<div class="challenges">
<?php foreach ($challenges as $chal) {
$solved = "";
if(isset($user_scores[$chal['title'].":".$chal['owner']])) $solved = " solved";
?>
<div class="challenge">
<div class="title<?php echo $solved; ?>"><?php echo $chal['title']; ?> | <?php echo $chal['owner']; ?> | <?php echo calc_score($chal['count']); ?> | Solved <?php echo $chal['count'];?> times<div class="class"><?php echo $chal['category']; ?></div></div>
<div class="details"><?php echo base64_decode($chal['hint']); ?>
<br /><?php
if($chal['owner']!= $_SESSION['user'] && $solved=="") {
gen_submission_form($chal['title'], $chal['owner']);
}
?>
</div>
</div>
<?php } ?>
</div>
</body>
</html>