470 lines
15 KiB
HTML
470 lines
15 KiB
HTML
<!DOCTYPE html>
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<html>
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<head>
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<title>STOP! - Checkpoint</title>
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</head>
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<body style="background-color: #0e0e0e; overflow: hidden;">
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<style>
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@font-face {
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font-family: "Noto Sans";
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src: url("/checkpoint/NotoSans.woff");
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}
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* {
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font-family: "Noto Sans";
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}
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.middle-box {
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display: block;
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position: absolute;
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width: 30rem;
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height: calc(100% - 2rem);
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left: calc(50% - 15rem);
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top: 1rem;
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background-color: #111111;
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border-radius: 0.5rem;
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border: 1px solid #280d0e;
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}
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.big-icon {
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margin: 0;
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padding: 0;
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font-size: 8rem;
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color: white;
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width: 100%;
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text-align: center;
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}
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.subtext {
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margin: 0;
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padding: 0;
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font-size: 3rem;
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color: #d9d9d9;
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width: 100%;
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text-align: center;
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}
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.text-hr {
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margin: auto;
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margin-top: 1rem;
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margin-bottom: 1rem;
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padding: 0;
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background-color: #444444;
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width: 50%;
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box-shadow: none;
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text-align: center;
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height: 1px;
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border: none;
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}
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.text-hr-small {
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margin: auto;
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margin-top: 1rem;
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margin-bottom: 1rem;
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padding: 0;
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background-color: #444444;
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width: 25%;
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box-shadow: none;
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text-align: center;
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height: 1px;
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border: none;
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}
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.text-description {
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margin: 0;
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padding: 0;
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font-size: 1rem;
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color: #d9d9d9;
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width: 85%;
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margin-left: 7.5%;
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text-align: center;
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}
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.text-question {
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margin: 0;
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margin-top: 4rem;
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padding: 0;
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font-size: 1.4rem;
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color: #d9d9d9;
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width: 85%;
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margin-left: 7.5%;
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text-align: center;
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}
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.bottom-bar {
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position: absolute;
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width: 100%;
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height: auto;
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bottom: 0.4rem;
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left: 0;
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}
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.bottom-hash-text {
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margin: 0;
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padding: 0;
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font-size: 1rem;
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color: #d9d9d9;
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width: 85%;
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margin-left: 7.5%;
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text-align: center;
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}
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.bottom-credit-text {
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display: block;
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margin: 0;
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padding: 0;
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font-size: 0.5rem;
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color: #4b4b4b;
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width: 98%;
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text-align: right;
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transition: ease-in-out 0.1s;
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margin-top: 0.2rem;
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}
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.bottom-credit-text:hover,
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.bottom-credit-text:link:hover,
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.bottom-credit-text:visited:hover {
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color: #764343;
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cursor: pointer;
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}
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.bottom-credit-text:link,
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.bottom-credit-text:visited {
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color: #4b4b4b;
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}
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.bottom-progress {
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position: relative;
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height: 3px;
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background-color: #222222;
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width: 80%;
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margin-left: 10%;
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margin-bottom: 0.8rem;
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}
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.bottom-progress-light {
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position: absolute;
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left: 0;
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top: 0;
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width: 0%;
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height: 3px;
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background-color: #692225;
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transition: ease-in-out 0.1s;
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}
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.link,
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.link:visited,
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.link:link,
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.link:focus,
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.link:active {
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color: #c03940;
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text-decoration: none;
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}
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.link:hover {
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text-decoration: underline;
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}
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@media (pointer:none),
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(pointer:coarse) {
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.big-icon {
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margin-top: 10rem;
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}
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.middle-box {
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width: 90%;
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left: 5%;
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}
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.subtext {
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font-size: 6rem;
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}
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.text-description {
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font-size: 3rem;
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}
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.text-hr {
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height: 3px;
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}
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.bottom-hash-text {
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font-size: 2.5rem;
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}
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.bottom-credit-text {
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font-size: 1rem;
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}
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}
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</style>
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<div class="middle-box">
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<p class="big-icon">
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🛑 <!-- 🛑 -->
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</p>
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<p class="subtext" id="subtext">
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STOP!
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</p>
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<hr class="text-hr" />
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<noscript>
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<p class="text-description">
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This website uses <a class="link" href="https://github.com/vaxerski/checkpoint">checkpoint</a> and
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requires
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javascript to
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automatically verify you are not a bot.<br /><br />
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You seem to be running without Javascript enabled, and thus will have to do this manually.<br /><br />
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Paste this command into your Linux terminal and provide the output below:
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</p>
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<p class="code-block">
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perl -MDigest::SHA=sha256_hex -e '$n="{{ tl:text challengeNonce }}";$d={{ tl:text challengeDifficulty
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}};for($i=0;;$i++){$h=sha256_hex($n.$i);if(substr($h,0,$d) eq "0"x$d){print "$i\n";last}}'
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</p>
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<form action="/checkpoint/challengeNoJs" method="get">
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<div>
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<label class="form-label" for="name">Enter the output </label>
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<input class="form-input" type="text" name="solution" id="solution" required />
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</div>
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<input class="input-hidden" type="text" name="fingerprint" id="fingerprint"
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value="{{ tl:text challengeFingerprint }}" />
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<input class="input-hidden" type="text" name="challenge" id="challenge"
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value="{{ tl:text challengeNonce }}" />
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<input class="input-hidden" type="text" name="sig" id="sig" value="{{ tl:text challengeSignature }}" />
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<input class="input-hidden" type="text" name="timestamp" id="timestamp"
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value="{{ tl:text challengeTimestamp }}" />
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<input class="input-hidden" type="text" name="difficulty" id="difficulty"
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value="{{ tl:text challengeDifficulty }}" />
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<input class="form-button" type="submit" value="Send" />
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</form>
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<p class="text-description text-warning">
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Never trust random scripts from the internet! Make sure you understand the perl script above.
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If you don't, click <a class="link" href="/checkpoint/explainNoJs" target="_blank" style="text-decoration: underline;">here</a> for an explanation.
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</p>
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<style>
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.form-label {
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color: #d9d9d9;
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display: block;
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text-align: center;
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margin-bottom: 0.5rem;
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font-size: 1rem;
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}
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.form-input {
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display: block;
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margin: 0 auto;
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width: 15rem;
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background-color: #161616;
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color: #d9d9d9;
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border: 1px solid #280d0e;
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border-radius: 0.3rem;
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padding: 0.5rem;
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font-size: 1rem;
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margin-bottom: 0.5rem;
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outline: none;
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transition: border-color 0.2s ease-in-out;
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}
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.form-input:focus {
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border-color: #692225;
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}
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.form-button {
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display: block;
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margin: 0 auto;
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background-color: #280d0e;
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color: #d9d9d9;
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border: none;
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border-radius: 0.3rem;
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padding: 0.5rem 1.5rem;
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font-size: 1rem;
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cursor: pointer;
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transition: background-color 0.2s ease-in-out;
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}
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.form-button:hover {
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background-color: #692225;
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}
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.code-block {
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background-color: #161616;
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color: #d9d9d9;
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border-radius: 1rem;
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font-family: monospace;
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margin: 1rem;
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width: calc(100% - 3rem);
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max-width: 100%;
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text-wrap: break-word;
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overflow-wrap: break-word;
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padding: 0.5rem;
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text-align: left;
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border: 1px solid #280d0e;
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}
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.input-hidden {
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visibility: hidden;
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position: absolute;
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}
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.text-warning {
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color:#c03940;
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}
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.require-js {
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display: none;
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}
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</style>
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</noscript>
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<p class="text-description require-js">
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Verifying that you are not a bot. This might take a short moment.
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<br />
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<br />
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You do not need to do anything.
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</p>
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<p class="text-question require-js">
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Why am I seeing this?
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</p>
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<hr class="text-hr-small require-js" />
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<p class="text-description require-js">
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This website protects itself from AI bots and scrapers
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by asking you to complete a cryptographic challenge before allowing you entry.
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</p>
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<div class="bottom-bar require-js">
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<div class="bottom-progress">
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<div class="bottom-progress-light" name="progress-light"></div>
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</div>
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<p class="bottom-hash-text" id="results">
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Difficulty {{ tl:text challengeDifficulty }}, elapsed 0ms, 0h, 0h/s
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</p>
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<a class="bottom-credit-text" href="https://github.com/vaxerski/checkpoint">
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<i>Powered by checkpoint v{{ tl:text checkpointVersion }}</i>
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</a>
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</div>
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</div>
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<script type="text/javascript">
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setTimeout(
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async function () {
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var it = 0;
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var start = Date.now();
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const challengeNonce = "{{ tl:text challengeNonce }}";
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const challengeTimestamp = "{{ tl:text challengeTimestamp }}";
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const difficulty = parseInt("{{ tl:text challengeDifficulty }}");
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const challengeSig = "{{ tl:text challengeSignature }}";
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const challengeFingerprint = "{{ tl:text challengeFingerprint }}";
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function itShort(it) {
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if (it > 1000000)
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return parseInt(it / 100000) / 10 + "M";
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return parseInt(it / 100) / 10 + "k";
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}
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function timeShort(ms) {
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if (ms > 1000)
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return parseInt(ms / 100) / 10 + "s";
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return ms + "ms";
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}
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function getCompletionPercent(it) {
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const exp = Math.pow(2, 4 * difficulty);
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return Math.floor((1 - 1 / (Math.pow(it / exp * 3, 2) + 1)) * 100);
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}
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function success(it) {
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document.getElementById("results").innerHTML = "Success! Completed challenge after " + itShort(it) + " iterations, in " + timeShort(Math.floor(Date.now() - start)) + ".";
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document.getElementsByName("progress-light")[0].style.width = "100%";
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const data = JSON.stringify({
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challenge: challengeNonce,
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solution: it,
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difficulty: difficulty,
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sig: challengeSig,
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fingerprint: challengeFingerprint,
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timestamp: challengeTimestamp
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});
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fetch("/checkpoint/challenge",
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{
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headers: {
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"Content-Type": "application/json"
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},
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method: "POST",
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body: data
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}
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).then((res) => {
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if (res.status == 200) {
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console.log("Got token.");
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window.location.reload();
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} else
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console.log("Server error");
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});
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}
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const workBuffer = new Uint8Array(challengeNonce.length + 10);
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for (let i = 0; i < challengeNonce.length; i++)
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workBuffer[i] = challengeNonce.charCodeAt(i);
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while (true) {
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const digits = it === 0 ? 1 : (~~Math.floor(Math.log10(it)) + 1);
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for (let i = digits - 1; i >= 0; i--)
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workBuffer[challengeNonce.length + (digits - 1 - i)] = 48 + ~~Math.floor((it / Math.pow(10, i)) % 10);
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const hashedData = new Uint8Array(await window.crypto.subtle.digest('sha-256', workBuffer.slice(0, challengeNonce.length + digits)));
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let zeroPos = 0;
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for (; zeroPos < difficulty; zeroPos++) {
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if ((zeroPos % 2 == 0 ? (hashedData[~~(zeroPos / 2)] >> 4) : (hashedData[~~(zeroPos / 2)] & 0x0F)) != 0)
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break;
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}
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if (zeroPos >= difficulty) {
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success(it);
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console.log("Success: it " + it + ": " + Array.from(hashedData).map((item) => item.toString(16).padStart(2, "0")).join(""));
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break;
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}
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it++;
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if (it % 11377 == 0) {
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let ms = Math.floor(Date.now() - start);
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let hpers = it / (ms / 1000);
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document.getElementById("results").innerHTML = "Difficulty: " + difficulty + ", elapsed " + timeShort(ms) + ", " + itShort(it) + "h, " + itShort(hpers) + "h/s";
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document.getElementsByName("progress-light")[0].style.width = getCompletionPercent(it) + "%";
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}
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}
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}, 100);
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var currentTitle = 1;
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setInterval(
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() => {
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const titles = ["STOP", "HALT", "STÓJ", "ARRÊT", "СТІЙ"];
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document.getElementById("subtext").innerHTML = titles[currentTitle] + "!";
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currentTitle++;
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if (currentTitle >= titles.length)
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currentTitle = 0;
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}, 2000
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)
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</script>
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</body>
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</html> |