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AnOpenSauceDevAnOpenSauceDev
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Close down service, the current method is misleading now.
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‎index.html

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</style>
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<h1>Is This Mod Legit?</h1>
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<h2>Find out whether or not your mods have been tampered with. Powered by Modrinth's API.</h2>
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<script defer data-domain="isthismodlegit.anopensauce.dev" src="https://analytics.anopensauce.dev/js/script.tagged-events.js"></script>
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<p><a href="https://github.com/AnOpenSauceDev/IsThisModLegit-Web/issues">Found an issue? Report it here!</a></p>
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<br>
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<div>
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<p id="result"></p>
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<p>File Upload</p>
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<h2>Your uploaded files never leave your computer, only the hash.</h2>
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<form onsubmit="handleButtonPress('file')" id="form">
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<br>
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<label>Upload file:</label> <input type="file" id="fileSelector" onchange="hashFile();"> <input class="plausible-event-name=Scan" type="submit" value="Scan Mod!"></input>
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<p id="filehash"></p>
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</form>
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<br>
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<p>Hash Search</p>
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<form onsubmit="handleButtonPress('hash')" id="form">
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<label for="hash">SHA1 Hash</label>
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<br>
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<input type="text" id="hash"></input> <input class="plausible-event-name=Scan" type="submit" value="Search Hash!"></input>
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</form>
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<script>// full credit to: https://stackoverflow.com/questions/60595630/javascript-use-input-type-file-to-compute-sha256-file-hash
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// my solution was... much worse compared to this.
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var filehash = document.getElementById("filehash");
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function hashFile() {
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readBinaryFile(fileSelector.files[0])
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.then(function(result) {
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result = new Uint8Array(result);
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return window.crypto.subtle.digest('SHA-512', result); // SHA-1 produces zeros that cause things to break
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}).then(function(result) {
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result = new Uint8Array(result);
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var resultHex = Uint8ArrayToHexString(result);
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filehash.innerText = resultHex;
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});
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}
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function readBinaryFile(file) {
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return new Promise((resolve, reject) => {
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var fr = new FileReader();
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fr.onload = () => {
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resolve(fr.result)
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};
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fr.readAsArrayBuffer(file);
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});
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}
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function Uint8ArrayToHexString(ui8array) {
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var hexString = '',
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h;
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for (var i = 0; i < ui8array.length; i++) {
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h = ui8array[i].toString(16);
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if (h.length == 1) {
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h = '0' + h;
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}
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hexString += h;
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}
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var p = Math.pow(2, Math.ceil(Math.log2(hexString.length)));
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hexString = hexString.padStart(p, '0');
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return hexString;
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}
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</script>
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</div>
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<script>
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function handleButtonPress(type){
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if(type == "hash"){
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var sha1 = document.getElementById("hash");
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var reqstring = "https://api.modrinth.com/v2/version_file/" + sha1.value + "?algorithm=sha1"
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}
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else{ // file upload
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var sha1 = document.getElementById("filehash");
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var reqstring = "https://api.modrinth.com/v2/version_file/" + sha1.innerText + "?algorithm=sha512"
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document.getElementById("fileSelector").value = "";
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}
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var result = document.getElementById("result");
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if(sha1.innerText == ""){
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result.innerText = "This... is not a file. Please upload a real file."
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return;
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}
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if(type == "file"){
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sha1.innerText = "";
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}
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//var reqstring = "https://api.modrinth.com/v2/version_file/" + sha1.value + "?algorithm=sha1"
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console.log("grabbing from " + reqstring)
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var requestdata = GET(reqstring);
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if(requestdata.status == 200){
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result.innerHTML = "<div class='result-found'>This mod's hash matches 1:1 on Modrinth!</div>"
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}else if(requestdata.status == 410){
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result.innerText = "ERROR: The modrinth API endpoint is deprecated."
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}else{
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result.innerHTML = "<div class='result-bad'>Warning, no matching hash found! Read the FAQ for more information.</div"
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}
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}
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function GET(URL)
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{
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var xmlHttp = new XMLHttpRequest();
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xmlHttp.open( "GET", URL, false );
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xmlHttp.send( null );
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return xmlHttp;
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}
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var form = document.getElementById("form");
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function handleForm(event) { event.preventDefault(); }
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form.addEventListener('submit', handleForm);
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</script>
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<br>
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<details>
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<summary>FAQ</summary>
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<h3 name="no-matching-hash">There wasn't a matching hash for my mod!</h3>
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This could mean one of a few things. Either:
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<ul>
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<li>Your mod is not available anywhere on Modrinth. This might be because the mod is only on a platform like CurseForge, or it's a developer build on GitHub.</li>
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<li>Your mod has been <strong>potentially tampered with.</strong> If you're not 100% about the legitimacy of this mod, you should remove it, just to be safe.</li>
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</ul>
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<br>
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<h3>Does this support plugins?</h3>
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<strong>Yes!</strong> This works with mods, plugins and even Modpacks!
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<br> <br>
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<h3>Will you support CurseForge mods?</h3>
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<strong>No,</strong> CurseForge doesn't really have a good way to grab a mod from a file hash. There also have been multiple cases of malware distribution on CurseForge, so it's best to steer clear anyways.
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<br> <br>
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<h3>Is there a way to bulk-scan mods?</h3>
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<strong>Yes... kinda...</strong> Is This Mod Legit does have a <a href="https://modrinth.com/mod/is-this-mod-legit"> companion mod</a>, but that requires you... running Minecraft to scan your mods, so this isn't a great idea in hindsight.
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<br> <br>
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<h3>Are only specific modloaders supported?</h3>
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<strong>No!</strong> all modloaders/server types (and even files that aren't mods) are supported.
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<br> <br>
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<h3>Is any data tracked?</h3>
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<strong>No!</strong> I use a Plausible Analytics instance that's fully GDPR compliant, and no files uploaded ever get saved. Only the file hashes leave your computer.
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<h3>Are any other games supported?</h3>
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<strong>Not yet...</strong> but Modrinth has plans to support other games, and other mod distribution APIs can be added here in the future.
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<br> <br>
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<h3>Why is this website in vanilla CSS/JS?</h3>
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I <i>normally</i> use Svelte like a sane developer, but i was too lazy to make a project this time, and made this atrocity instead. 😎
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</details>
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<h2>A Project by <a href="https://github.com/AnOpenSauceDev">AnOpenSauceDev</a></h2>
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<h2>Due to recent events involving Malware being distributed on Modrinth, "Is This Mod Legit?" can no longer be used as a benchmark for determining if a mod has been tampered with.</h2>
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<h2>I may work on an alternative that checks for suspicous behaviour if I have the time, but the current method used is not trustworthy anymore.</h2>

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