Merge ec7f494f41 into 2183106c73

.gitattributes

@@ -3,3 +3,6 @@
 *.js    text eol=lf
 *.json  text eol=lf
 *.md    text eol=lf
+
+defaults/* linguist-vendored
+lib/* linguist-vendored

.gitignore

@@ -9,3 +9,7 @@ resources/app/files/rankurl.txt
 node_modules/
 dist/
 UnityBugReporter.exe
+cache_handler/*/
+extra/
+*.sh
+yarn.lock

assets/css/openfusion.css

@@ -80,6 +80,11 @@ body {
     background-repeat: repeat;
 }
 
+.btn-warning {
+    background-image: url("../../assets/img/btn-warning-bg.png");
+    background-repeat: repeat;
+}
+
 #of-aboutmodal > .modal-dialog > .modal-content {
     background-color: #093363;
     border-color: #6699ff;
@@ -105,6 +110,36 @@ body {
     border-color: #6699ff;
 }
 
+#of-editcacheconfigmodal > .modal-dialog > .modal-content {
+    background-color: #093363;
+    border-color: #6699ff;
+}
+
+#of-editconfigmodal > .modal-dialog > .modal-content {
+    background-color: #093363;
+    border-color: #6699ff;
+}
+
+#of-addversionmodal > .modal-dialog > .modal-content {
+    background-color: #093363;
+    border-color: #6699ff;
+}
+
+#of-editversionmodal > .modal-dialog > .modal-content {
+    background-color: #093363;
+    border-color: #6699ff;
+}
+
+#of-deleteversionmodal > .modal-dialog > .modal-content {
+    background-color: #093363;
+    border-color: #6699ff;
+}
+
+#of-restoreversionsmodal > .modal-dialog > .modal-content {
+    background-color: #093363;
+    border-color: #6699ff;
+}
+
 .form-control,
 .form-control:focus {
     border-color: #0099ff;
@@ -118,6 +153,14 @@ select {
     color: #fff;
 }
 
+.modal {
+    overflow-y: auto;
+}
+
+.invalidinput {
+    border-color: #ff0000;
+}
+
 button:disabled {
     cursor: not-allowed;
     pointer-events: all !important;

assets/js/server-selector.js

@@ -2,14 +2,27 @@ var remote = require("remote");
 var remotefs = remote.require("fs-extra");
 var dns = remote.require("dns");
 var path = remote.require("path");
+var dialog = remote.require("dialog");
+var net = remote.require("net");
+var spawn = require("child_process").spawn;
 
 var userData = remote.require("app").getPath("userData");
 var configPath = path.join(userData, "config.json");
 var serversPath = path.join(userData, "servers.json");
 var versionsPath = path.join(userData, "versions.json");
+var cacheRoot = path.join(
+    userData,
+    "/../../LocalLow/Unity/Web Player/Cache"
+);
+var offlineRootDefault = path.join(cacheRoot, "Offline");
+var offlineRoot = offlineRootDefault;
+
+var cdnString = "http://cdn.dexlabs.systems/ff/big";
 
 var versionArray;
 var serverArray;
+var cacheSizes;
+var defaultHashes;
 var config;
 
 function enableServerListButtons() {
@@ -30,6 +43,30 @@ function disableServerListButtons() {
     $("#of-deleteserver-button").prop("disabled", true);
 }
 
+function enableVersionAddButton() {
+    $("#of-addversion-button").removeClass("disabled");
+    $("#of-addversion-button").prop("disabled", false);
+}
+
+function enableVersionListButtons() {
+    $("#of-editversion-button").removeClass("disabled");
+    $("#of-editversion-button").prop("disabled", false);
+    $("#of-deleteversion-button").removeClass("disabled");
+    $("#of-deleteversion-button").prop("disabled", false);
+}
+
+function disableVersionAddButton() {
+    $("#of-addversion-button").addClass("disabled");
+    $("#of-addversion-button").prop("disabled", true);
+}
+
+function disableVersionListButtons() {
+    $("#of-editversion-button").addClass("disabled");
+    $("#of-editversion-button").prop("disabled", true);
+    $("#of-deleteversion-button").addClass("disabled");
+    $("#of-deleteversion-button").prop("disabled", true);
+}
+
 function getAppVersion() {
     appVersion = remote.require("app").getVersion();
 
@@ -47,6 +84,36 @@ function setAppVersionText() {
     $("#of-versionnumber").text("v" + getAppVersion());
 }
 
+function validateServerSave(modalName) {
+    // works everytime a key is entered into the server save form
+    var descInput = document.getElementById(modalName + "server-descinput");
+    var ipInput = document.getElementById(modalName + "server-ipinput");
+    var button = document.getElementById(modalName + "server-savebutton");
+    var valid = true;
+
+    descInput.classList.remove("invalidinput");
+    ipInput.classList.remove("invalidinput");
+
+    if (
+        descInput.value.length < parseInt(descInput.getAttribute("minlength")) ||
+        descInput.value.length > parseInt(descInput.getAttribute("maxlength"))
+    ) {
+        descInput.classList.add("invalidinput");
+        valid = false;
+    }
+
+    if (!(new RegExp(ipInput.getAttribute("pattern"))).test(ipInput.value)) {
+        ipInput.classList.add("invalidinput");
+        valid = false;
+    }
+
+    if (valid) {
+        button.removeAttribute("disabled");
+    } else {
+        button.setAttribute("disabled", "");
+    }
+}
+
 function addServer() {
     var jsonToModify = JSON.parse(remotefs.readFileSync(serversPath));
 
@@ -113,9 +180,162 @@ function restoreDefaultServers() {
     loadServerList();
 }
 
+function validateVersionSave(modalName) {
+    // works everytime a key is entered into the version save form
+    var nameInput = document.getElementById(modalName + "version-nameinput");
+    var urlInput = document.getElementById(modalName + "version-urlinput");
+    var button = document.getElementById(modalName + "version-savebutton");
+    var valid = true;
+
+    nameInput.classList.remove("invalidinput");
+    urlInput.classList.remove("invalidinput");
+
+    var matchingVersions = versionArray.filter(function (obj) {
+        return obj.name === nameInput.value;
+    });
+    var allowedMatches = (modalName === "edit") ? 1 : 0;
+
+    if (
+        matchingVersions.length > allowedMatches ||
+        !(new RegExp(nameInput.getAttribute("pattern"))).test(nameInput.value)
+    ) {
+        nameInput.classList.add("invalidinput");
+        valid = false;
+    }
+
+    if (!(new RegExp(urlInput.getAttribute("pattern"))).test(urlInput.value)) {
+        urlInput.classList.add("invalidinput");
+        valid = false;
+    }
+
+    if (valid) {
+        button.removeAttribute("disabled");
+    } else {
+        button.setAttribute("disabled", "");
+    }
+}
+
+function addVersion() {
+    var jsonToModify = JSON.parse(remotefs.readFileSync(versionsPath));
+
+    var version = {};
+    version["name"] =
+        $("#addversion-nameinput").val().length == 0
+            ? "custom-build-" + uuidv4().substring(0, 8)
+            : $("#addversion-nameinput").val();
+    version["url"] =
+        $("#addversion-urlinput").val().length == 0
+            ? cdnString + "/" + version["name"] + "/"
+            : $("#addversion-urlinput").val();
+
+    var matchingVersions = jsonToModify["versions"].filter(function (obj) {
+        return obj.name === version["name"];
+    });
+
+    if (matchingVersions.length > 0) return;
+
+    jsonToModify["versions"].unshift(version);
+
+    remotefs.writeFileSync(versionsPath, JSON.stringify(jsonToModify, null, 4));
+    loadCacheList();
+    handleCache("hash-check", version["name"]);
+}
+
+function editVersion() {
+    var jsonToModify = JSON.parse(remotefs.readFileSync(versionsPath));
+    var editedVersionString = null;
+
+    $.each(jsonToModify["versions"], function (key, value) {
+        if (value["name"] == getSelectedVersion() && !defaultHashes.hasOwnProperty(value["name"])) {
+            value["name"] =
+                $("#editversion-nameinput").val().length == 0
+                    ? value["name"]
+                    : $("#editversion-nameinput").val();
+            value["url"] =
+                $("#editversion-urlinput").val().length == 0
+                    ? value["url"]
+                    : $("#editversion-urlinput").val();
+            editedVersionString = value["name"];
+        }
+    });
+
+    if (!editedVersionString) return;
+
+    remotefs.writeFileSync(versionsPath, JSON.stringify(jsonToModify, null, 4));
+    loadCacheList();
+    handleCache("hash-check", editedVersionString);
+}
+
+function deleteVersion() {
+    var jsonToModify = JSON.parse(remotefs.readFileSync(versionsPath));
+
+    var result = jsonToModify["versions"].filter(function (obj) {
+        return obj.name === getSelectedVersion();
+    })[0];
+
+    if (defaultHashes.hasOwnProperty(result.name)) return;
+
+    var resultindex = jsonToModify["versions"].indexOf(result);
+
+    jsonToModify["versions"].splice(resultindex, 1);
+
+    remotefs.writeFileSync(versionsPath, JSON.stringify(jsonToModify, null, 4));
+    loadCacheList();
+    delete cacheSizes[result.name];
+}
+
+function restoreDefaultVersions() {
+    remotefs.copySync(
+        path.join(__dirname, "/defaults/versions.json"),
+        versionsPath
+    );
+    loadCacheList();
+    handleCache("hash-check");
+}
+
+function editConfig() {
+    var jsonToModify = JSON.parse(remotefs.readFileSync(configPath));
+
+    jsonToModify["autoupdate-check"] = $("#editconfig-autoupdate").prop("checked");
+    jsonToModify["cache-swapping"] = $("#editconfig-cacheswapping").prop("checked");
+    jsonToModify["enable-offline-cache"] = $("#editconfig-enableofflinecache").prop("checked");
+    jsonToModify["verify-offline-cache"] = $("#editconfig-verifyofflinecache").prop("checked");
+
+    var dirInput = $("#editconfig-offlinecachelocation:text").val();
+    var shouldChangeRoot = (
+        remotefs.existsSync(dirInput) &&
+        remotefs.statSync(dirInput).isDirectory()
+    );
+
+    jsonToModify["offline-cache-location"] = shouldChangeRoot ? dirInput : offlineRoot;
+
+    remotefs.writeFileSync(configPath, JSON.stringify(jsonToModify, null, 4));
+
+    loadConfig();
+    // check all offline caches if the offline root changes
+    if (shouldChangeRoot) handleCache("hash-check", null, "offline");
+}
+
+function validateCacheLocation() {
+    var input = document.getElementById("editconfig-offlinecachelocation");
+    var button = document.getElementById("editconfig-savebutton");
+
+    input.classList.remove("invalidinput");
+    button.removeAttribute("disabled");
+
+    if (!remotefs.existsSync(input.value) || !remotefs.statSync(input.value).isDirectory()) {
+        input.classList.add("invalidinput");
+        button.setAttribute("disabled", "");
+    }
+}
+
 function loadGameVersions() {
     var versionJson = remotefs.readJsonSync(versionsPath);
     versionArray = versionJson["versions"];
+
+    $("#addserver-versionselect").empty();
+    $("#editserver-versionselect").empty();
+
     $.each(versionArray, function (key, value) {
         $(new Option(value.name, "val")).appendTo("#addserver-versionselect");
         $(new Option(value.name, "val")).appendTo("#editserver-versionselect");
@@ -125,14 +345,25 @@ function loadGameVersions() {
 function loadConfig() {
     // Load config object globally
     config = remotefs.readJsonSync(configPath);
+
+    $("#editconfig-autoupdate").prop("checked", config["autoupdate-check"]);
+    $("#editconfig-cacheswapping").prop("checked", config["cache-swapping"]);
+    $("#editconfig-enableofflinecache").prop("checked", config["enable-offline-cache"]);
+    $("#editconfig-verifyofflinecache").prop("checked", config["verify-offline-cache"]);
+
+    // alter offline root globally
+    offlineRoot = config["offline-cache-location"] || offlineRootDefault;
+    $("#editconfig-offlinecachelocation:text").val(offlineRoot);
+
+    validateCacheLocation();
 }
 
 function loadServerList() {
     var serverJson = remotefs.readJsonSync(serversPath);
     serverArray = serverJson["servers"];
 
+    deselectServer(); // Remove selection and disable buttons until another server is selected
     $(".server-listing-entry").remove(); // Clear out old stuff, if any
-    disableServerListButtons(); // Disable buttons until another server is selected
 
     if (serverArray.length > 0) {
         // Servers were found in the JSON
@@ -158,11 +389,318 @@ function loadServerList() {
     }
 }
 
-function performCacheSwap(newVersion) {
-    var cacheRoot = path.join(
-        userData,
-        "/../../LocalLow/Unity/Web Player/Cache"
+function loadCacheList() {
+    // we might want to use a new version right away, so reload them
+    loadGameVersions();
+
+    // load default hashes.json for reference while running the cache handler
+    if (!defaultHashes) {
+        defaultHashes = remotefs.readJsonSync(path.join(
+            __dirname,
+            "/defaults/hashes.json"
+        ));
+    }
+
+    deselectVersion(); // Remove selection and disable buttons until another server is selected
+    $(".cache-listing-entry").remove(); // Clear out old stuff, if any
+
+    $.each(versionArray, function (key, value) {
+        var row = document.createElement("tr");
+        row.className = "cache-listing-entry"
+        row.setAttribute("id", value.name);
+
+        var cellVersion = document.createElement("td");
+        cellVersion.textContent = value.name;
+        cellVersion.className = "text-monospace";
+
+        var cellPlayableCache = getCacheInfoCell(value.name, "playable");
+        var cellOfflineCache = getCacheInfoCell(value.name, "offline");
+
+        row.appendChild(cellVersion);
+        row.appendChild(cellPlayableCache);
+        row.appendChild(cellOfflineCache);
+
+        $("#cache-tablebody").append(row);
+    });
+
+    // simulate a cache handler run so that the buttons update properly
+    storageLoadingStart();
+    storageLoadingUpdate(cacheSizes);
+    storageLoadingComplete(cacheSizes);
+}
+
+function getCacheElemID(versionString, cacheMode, elementName) {
+    return [versionString, cacheMode, "cache", elementName].filter(function (value) {
+        return typeof value !== "undefined";
+    }).join("-");
+}
+
+function getCacheButtonID(versionString, cacheMode, buttonMode) {
+    return [getCacheElemID(versionString, cacheMode), buttonMode, "button"].join("-");
+}
+
+function getCacheLabelText(sizes) {
+    if (!sizes || sizes.total === 0)
+        return "?.?? GB / ?.?? GB";
+
+    var gb = 1 << 30;
+    var labelText = (sizes.intact / gb).toFixed(2) + " / " + (sizes.total / gb).toFixed(2) + " GB";
+
+    if (sizes.altered > 0) {
+        labelText += "<br/>(" + (sizes.altered / gb).toFixed(2) + " GB Altered)";
+    }
+
+    return labelText;
+}
+
+function getCacheInfoCell(versionString, cacheMode) {
+    var divID = getCacheElemID(versionString, cacheMode, "div");
+    var labelID = getCacheElemID(versionString, cacheMode, "label");
+
+    var settings = {
+        download: {
+            icon: "fas fa-download",
+            class: "btn btn-success mr-1",
+            tooltip: "Download Cache"
+        },
+        fix: {
+            icon: "fas fa-hammer",
+            class: "btn btn-warning mr-1",
+            tooltip: "Fix Altered Files in Cache"
+        },
+        delete: {
+            icon: "fas fa-trash-alt",
+            class: "btn btn-danger mr-1",
+            tooltip: "Delete Cache"
+        }
+    };
+
+    var cellCache = document.createElement("td");
+    var divCacheAll = document.createElement("div");
+
+    var labelCache = document.createElement("label");
+    labelCache.setAttribute("id", labelID);
+    labelCache.setAttribute("for", divID);
+    // pull existing info from cacheSizes when available
+    labelCache.innerHTML = getCacheLabelText(
+        (cacheSizes && cacheSizes[versionString]) ?
+        cacheSizes[versionString][cacheMode] :
+        null
     );
+
+    var divCacheButtons = document.createElement("div");
+    divCacheButtons.setAttribute("id", labelID);
+
+    $.each(settings, function (buttonMode, config) {
+        // only delete allowed for playable game caches
+        if (cacheMode === "playable" && buttonMode !== "delete") {
+            return;
+        }
+
+        var buttonID = getCacheButtonID(versionString, cacheMode, buttonMode);
+
+        var iconItalic = document.createElement("i");
+        iconItalic.setAttribute("class", config.icon);
+
+        var buttonCache = document.createElement("button");
+        buttonCache.setAttribute("id", buttonID);
+        buttonCache.setAttribute("class", config.class);
+        buttonCache.setAttribute("title", config.tooltip);
+        buttonCache.setAttribute("type", "button");
+        // handler setup
+        buttonCache.setAttribute("onclick", "handleCache(\"" + buttonMode + "\", \"" + versionString + "\", \"" + cacheMode + "\");");
+        buttonCache.appendChild(iconItalic);
+
+        divCacheButtons.appendChild(buttonCache);
+    });
+
+    divCacheAll.appendChild(labelCache);
+    divCacheAll.appendChild(divCacheButtons);
+    cellCache.appendChild(divCacheAll);
+
+    return cellCache;
+}
+
+function storageLoadingStart(vString, cMode) {
+    // determine which cache versions and modes to visually update
+    var versionStrings = [];
+    $.each(versionArray, function (key, value) {
+        if (vString) {
+            if (vString === value.name)
+                versionStrings.push(value.name);
+        } else {
+            versionStrings.push(value.name);
+        }
+    });
+    var cacheModes = (cMode) ? [cMode] : ["offline", "playable"];
+
+    // deselect and disable the add version button until they are re-enabled
+    deselectVersion();
+    disableVersionAddButton();
+
+    // turn buttons into spinners
+    $.each(versionStrings, function (vKey, versionString) {
+        $.each(cacheModes, function (cKey, cacheMode) {
+            var buttonDelete = document.getElementById(getCacheButtonID(versionString, cacheMode, "delete"));
+            var buttonDownload = document.getElementById(getCacheButtonID(versionString, cacheMode, "download"));
+            var buttonFix = document.getElementById(getCacheButtonID(versionString, cacheMode, "fix"));
+
+            if (!buttonDelete) return;
+
+            buttonDelete.setAttribute("disabled", "");
+            buttonDelete.children[0].setAttribute("class", "fas fa-spinner fa-spin fa-fw");
+
+            if (cacheMode === "offline") {
+                buttonDownload.setAttribute("disabled", "");
+                buttonDownload.children[0].setAttribute("class", "fas fa-spinner fa-spin fa-fw");
+
+                buttonFix.setAttribute("disabled", "");
+                buttonFix.children[0].setAttribute("class", "fas fa-spinner fa-spin fa-fw");
+            }
+        });
+    });
+}
+
+function storageLoadingUpdate(allSizes) {
+    // update cacheSizes and display results
+    $.each(allSizes, function (versionString, vSizes) {
+        $.each(vSizes, function (cacheMode, sizes) {
+            var label = document.getElementById(getCacheElemID(versionString, cacheMode, "label"));
+
+            cacheSizes = cacheSizes || {};
+            cacheSizes[versionString] = cacheSizes[versionString] || {};
+            cacheSizes[versionString][cacheMode] = sizes || {};
+
+            if (!label) return;
+
+            label.innerHTML = getCacheLabelText(sizes);
+        });
+    });
+}
+
+function storageLoadingComplete(allSizes) {
+    // re-enable buttons according to the sizes that were read
+    $.each(allSizes, function (versionString, vSizes) {
+        $.each(vSizes, function (cacheMode, sizes) {
+            var buttonDelete = document.getElementById(getCacheButtonID(versionString, cacheMode, "delete"));
+            var buttonDownload = document.getElementById(getCacheButtonID(versionString, cacheMode, "download"));
+            var buttonFix = document.getElementById(getCacheButtonID(versionString, cacheMode, "fix"));
+
+            if (!buttonDelete) return;
+
+            buttonDelete.children[0].setAttribute("class", "fas fa-trash-alt");
+
+            if (cacheMode === "offline") {
+                buttonDownload.children[0].setAttribute("class", "fas fa-download");
+                buttonFix.children[0].setAttribute("class", "fas fa-hammer");
+            }
+
+            if (sizes.intact > 0 || sizes.altered > 0) {
+                buttonDelete.removeAttribute("disabled");
+
+                if (cacheMode === "offline") {
+                    buttonDownload.setAttribute("disabled", "");
+
+                    if (sizes.altered > 0 || sizes.intact < sizes.total) {
+                        buttonFix.removeAttribute("disabled");
+                    }
+                }
+            } else {
+                buttonDelete.setAttribute("disabled", "");
+
+                if (cacheMode === "offline") {
+                    buttonDownload.removeAttribute("disabled");
+                    buttonFix.setAttribute("disabled", "");
+                }
+            }
+        });
+    });
+
+    // finally, re-enable the version add button
+    enableVersionAddButton();
+}
+
+function handleCache(operation, versionString, cacheMode, callback) {
+    // see if any versions match (could be undefined or null)
+    var versions = versionArray.filter(function (obj) {
+        return obj.name === versionString;
+    });
+    // pull version url from the found object, if none found, use the default cdn link
+    var cdnRoot = (versions.length === 0) ? cdnString : versions[0].url;
+
+    var lastSizes = { intact: 0, altered: 0, total: 0 };
+    var buf = "";
+
+    // start loading on the given version and mode (could be undefined or null, which means 'all')
+    storageLoadingStart(versionString, cacheMode);
+
+    // create the server and socket listener
+    var server = net.createServer(function (sock) {
+        sock.setEncoding("utf8");
+
+        sock.on("data", function (data) {
+            // read data until the next \n, and keep reading
+            // sometimes the updates are buffered, so there might be multiple objects
+            // per update, and partial objects as well
+            // buffer parsing allows us to handle these cases
+            buf += data;
+
+            var end = buf.indexOf("\n");
+
+            while (end > 0) {
+                var sub = buf.substring(0, end);
+                buf = buf.substring(end + 1);
+
+                // run a storage update here
+                lastSizes = JSON.parse(sub);
+                storageLoadingUpdate(lastSizes);
+
+                end = buf.indexOf("\n");
+            }
+        });
+    });
+
+    // start listening on a randomly acquired port, and spawn cache handler when ready
+    server.listen(0, "localhost", function () {
+        spawn(
+            path.join(__dirname, "lib", "cache_handler.exe"),
+            [
+                "--operation", operation,
+                // roots below contain version-agnostic main directories for caches
+                "--playable-root", cacheRoot,
+                "--offline-root", offlineRoot,
+                "--user-dir", userData,
+                // CDN root contains version-specific directory, unless cacheMode is "all"
+                "--cdn-root", cdnRoot,
+                "--cache-mode", cacheMode || "all",
+                "--cache-version", versionString || "all",
+                // learn port from the server object and tell the script where to connect
+                "--port", server.address().port,
+                // tell the script which versions and caches are official
+                "--official-caches"
+            ].concat(Object.keys(defaultHashes)),
+            {
+                stdio: "inherit"
+            }
+        ).on("exit", function (code, signal) {
+            if (code !== 0 || signal) {
+                dialog.showErrorBox(
+                    "Sorry!",
+                    "Process \"" + operation + "\" failed with code " + code + " and signal " + signal + "."
+                );
+            }
+
+            // when the script exits, close the server
+            server.close();
+            // set button state accordingly
+            storageLoadingComplete(lastSizes);
+            // then run the given callback (if any)
+            if (callback) callback(lastSizes);
+        });
+    });
+}
+
+function performCacheSwap(newVersion) {
     var currentCache = path.join(cacheRoot, "FusionFall");
     var newCache = path.join(cacheRoot, newVersion);
     var record = path.join(userData, ".lastver");
@@ -205,19 +743,18 @@ function performCacheSwap(newVersion) {
     }
 }
 
-// For writing loginInfo.php, assetInfo.php, etc.
-function setGameInfo(serverUUID) {
-    var result = serverArray.filter(function (obj) {
+function prepGameInfo(serverUUID) {
+    var serverInfo = serverArray.filter(function (obj) {
         return obj.uuid === serverUUID;
     })[0];
-    var gameVersion = versionArray.filter(function (obj) {
-        return obj.name === result.version;
+    var versionInfo = versionArray.filter(function (obj) {
+        return obj.name === serverInfo.version;
     })[0];
 
     // If cache swapping property exists AND is `true`, run cache swapping logic
     if (config["cache-swapping"]) {
         try {
-            performCacheSwap(gameVersion.name);
+            performCacheSwap(versionInfo.name);
         } catch (ex) {
             console.log(
                 "Error when swapping cache, it may get overwritten:\n" + ex
@@ -225,11 +762,40 @@ function setGameInfo(serverUUID) {
         }
     }
 
-    window.assetUrl = gameVersion.url; // game-client.js needs to access this
+    if (!config["enable-offline-cache"]) {
+        // if we always ignore the offline cache, just use the URL
+        setGameInfo(serverInfo, versionInfo.url);
+        return;
+    }
+
+    var offlinePath = path.join(offlineRoot, versionInfo.name);
+    var offlineURL = "file:///" + offlinePath.replace(/\\/g, "/") + "/";
+
+    if (config["verify-offline-cache"]) {
+        // if required, do a full hash check, and use the offline cache only if it is fully intact
+        handleCache("hash-check", versionInfo.name, "offline", function (sizes) {
+            var versionURL = (sizes.intact < sizes.total) ? versionInfo.url : offlineURL;
+            setGameInfo(serverInfo, versionURL);
+        });
+        return;
+    }
+
+    // otherwise, if main.unity3d is present, use the offline cache
+    var mainPath = path.join(offlinePath, "main.unity3d");
+    var versionURL = !remotefs.existsSync(mainPath) ? versionInfo.url : offlineURL;
+    setGameInfo(serverInfo, versionURL);
+}
+
+// For writing loginInfo.php, assetInfo.php, etc.
+function setGameInfo(serverInfo, versionURL) {
+    // slash fix if people mess it up via text editors
+    var versionURLRoot = versionURL.endsWith("/") ? versionURL : versionURL + "/";
+    window.assetUrl = versionURLRoot; // game-client.js needs to access this
+    console.log("Cache will expand from " + versionURLRoot);
 
     remotefs.writeFileSync(path.join(__dirname, "assetInfo.php"), assetUrl);
-    if (result.hasOwnProperty("endpoint")) {
-        var httpEndpoint = result.endpoint.replace("https://", "http://");
+    if (serverInfo.hasOwnProperty("endpoint")) {
+        var httpEndpoint = serverInfo.endpoint.replace("https://", "http://");
         remotefs.writeFileSync(
             path.join(__dirname, "rankurl.txt"),
             httpEndpoint + "getranks"
@@ -261,17 +827,17 @@ function setGameInfo(serverUUID) {
     // Server address parsing
     var address;
     var port;
-    var sepPos = result.ip.indexOf(":");
+    var sepPos = serverInfo.ip.indexOf(":");
     if (sepPos > -1) {
-        address = result.ip.substr(0, sepPos);
-        port = result.ip.substr(sepPos + 1);
+        address = serverInfo.ip.substr(0, sepPos);
+        port = serverInfo.ip.substr(sepPos + 1);
     } else {
-        address = result.ip;
+        address = serverInfo.ip;
         port = 23000; // default
     }
 
     // DNS resolution. there is no synchronous version for some stupid reason
-    if (!address.match(/^[0-9.]+$/))
+    if (!address.match(/^[0-9.]+$/)) {
         dns.lookup(address, (family = 4), function (err, resolvedAddress) {
             if (!err) {
                 console.log("Resolved " + address + " to " + resolvedAddress);
@@ -281,7 +847,7 @@ function setGameInfo(serverUUID) {
             }
             prepConnection(address, port);
         });
-    else {
+    } else {
         console.log(address + " is an IP; skipping DNS lookup");
         prepConnection(address, port);
     }
@@ -300,6 +866,11 @@ function getSelectedServer() {
     return $("#server-tablebody > tr.bg-primary").prop("id");
 }
 
+// Returns the name of the version with the selected background color.
+function getSelectedVersion() {
+    return $("#cache-tablebody > tr.bg-primary").prop("id");
+}
+
 function connectToServer() {
     // Get ID of the selected server, which corresponds to its UUID in the json
     console.log("Connecting to server with UUID of " + getSelectedServer());
@@ -310,7 +881,7 @@ function connectToServer() {
     $("#of-serverselector").fadeOut("slow", function () {
         setTimeout(function () {
             $("body,html").css("pointer-events", "");
-            setGameInfo(getSelectedServer());
+            prepGameInfo(getSelectedServer());
         }, 200);
     });
 }
@@ -321,21 +892,47 @@ function deselectServer() {
     $(".server-listing-entry").removeClass("bg-primary");
 }
 
+// If applicable, deselect currently selected version.
+function deselectVersion() {
+    disableVersionListButtons();
+    $(".cache-listing-entry").removeClass("bg-primary");
+}
+
+// Select a server
 $("#server-table").on("click", ".server-listing-entry", function (event) {
     enableServerListButtons();
     $(this).addClass("bg-primary").siblings().removeClass("bg-primary");
 });
 
+// Select a version (if allowed)
+$("#cache-table").on("click", ".cache-listing-entry", function (event) {
+    // wait for the add button to be re-enabled first
+    if ($("#of-addversion-button").prop("disabled")) return;
+    // do not select default builds
+    if (defaultHashes.hasOwnProperty($(this).attr("id"))) return;
+
+    enableVersionListButtons();
+    $(this).addClass("bg-primary").siblings().removeClass("bg-primary");
+});
+
 // QoL feature: if you double click on a server it will connect
 $("#server-table").on("dblclick", ".server-listing-entry", function (event) {
     $(this).addClass("bg-primary").siblings().removeClass("bg-primary");
     connectToServer();
 });
 
+$("#of-addservermodal").on("show.bs.modal", function (e) {
+    validateServerSave("add");
+});
+
+$("#of-addversionmodal").on("show.bs.modal", function (e) {
+    validateVersionSave("add");
+});
+
 $("#of-editservermodal").on("show.bs.modal", function (e) {
-    var jsonToModify = remotefs.readJsonSync(
-        path.join(userData, "servers.json")
-    );
+    // populate the edit modal with existing values
+    var jsonToModify = remotefs.readJsonSync(serversPath);
+
     $.each(jsonToModify["servers"], function (key, value) {
         if (value["uuid"] == getSelectedServer()) {
             $("#editserver-descinput")[0].value = value["description"];
@@ -350,11 +947,47 @@ $("#of-editservermodal").on("show.bs.modal", function (e) {
             $("#editserver-versionselect")[0].selectedIndex = versionIndex;
         }
     });
+
+    validateServerSave("edit");
 });
 
+$("#of-editversionmodal").on("show.bs.modal", function (e) {
+    // populate the edit modal with existing values
+    var jsonToModify = remotefs.readJsonSync(versionsPath);
+
+    $.each(jsonToModify["versions"], function (key, value) {
+        if (value["name"] == getSelectedVersion()) {
+            $("#editversion-nameinput")[0].value = value["name"];
+            $("#editversion-urlinput")[0].value = value["url"];
+        }
+    });
+
+    validateVersionSave("edit");
+});
+
+// Replace server name to delete
 $("#of-deleteservermodal").on("show.bs.modal", function (e) {
     var result = serverArray.filter(function (obj) {
         return obj.uuid === getSelectedServer();
     })[0];
     $("#deleteserver-servername").html(result.description);
 });
+
+// Replace version name to delete
+$("#of-deleteversionmodal").on("show.bs.modal", function (e) {
+    var result = versionArray.filter(function (obj) {
+        return obj.name === getSelectedVersion();
+    })[0];
+    $("#deleteversion-versionname").html(result.name);
+});
+
+// Run the global hash check once and only if the cache modal is ever shown
+$("#of-editcacheconfigmodal").on("show.bs.modal", function (e) {
+    if (!cacheSizes) handleCache("hash-check");
+});
+
+// Keep all config values synced on modal show
+// Avoids cases where people forget that they changed the offline root but did not save
+$("#of-editconfigmodal").on("show.bs.modal", function (e) {
+    loadConfig();
+});

cache_handler/cache_handler.spec

@@ -0,0 +1,33 @@
+# -*- mode: python ; coding: utf-8 -*-
+
+block_cipher = None
+
+
+a = Analysis(['cache_handler.py'],
+             pathex=['Z:\\src'],
+             binaries=[],
+             datas=[],
+             hiddenimports=[],
+             hookspath=[],
+             runtime_hooks=[],
+             excludes=[],
+             win_no_prefer_redirects=False,
+             win_private_assemblies=False,
+             cipher=block_cipher,
+             noarchive=False)
+pyz = PYZ(a.pure, a.zipped_data,
+             cipher=block_cipher)
+exe = EXE(pyz,
+          a.scripts,
+          a.binaries,
+          a.zipfiles,
+          a.datas,
+          [],
+          name='cache_handler',
+          debug=False,
+          bootloader_ignore_signals=False,
+          strip=False,
+          upx=True,
+          upx_exclude=[],
+          runtime_tmpdir=None,
+          console=True )

cache_handler/requirements.txt

@@ -0,0 +1,4 @@
+aiofiles
+httpx
+beautifulsoup4
+pyinstaller==3.5

defaults/config.json

@@ -1,5 +1,7 @@
 {
     "autoupdate-check": true,
     "cache-swapping": true,
-    "last-version-initialized": "1.5"
+    "enable-offline-cache": false,
+    "verify-offline-cache": false,
+    "last-version-initialized": "1.6"
 }

index.html

@@ -108,6 +108,30 @@
                         </button>
                     </div>
                     <div class="col-4 d-inline-flex justify-content-end">
+                        <button
+                            class="btn btn-primary mr-1"
+                            data-toggle="modal"
+                            data-bs-tooltip=""
+                            data-placement="bottom"
+                            id="of-editconfig-button"
+                            type="button"
+                            title="Edit Configuration"
+                            data-target="#of-editconfigmodal"
+                        >
+                            <i class="fas fa-cog"></i>
+                        </button>
+                        <button
+                            class="btn btn-primary mr-1"
+                            data-toggle="modal"
+                            data-bs-tooltip=""
+                            data-placement="bottom"
+                            id="of-editcache-button"
+                            type="button"
+                            title="Edit Game Builds"
+                            data-target="#of-editcacheconfigmodal"
+                        >
+                            <i class="fas fa-database"></i>
+                        </button>
                         <button
                             class="btn btn-primary disabled"
                             id="of-connect-button"
@@ -159,6 +183,13 @@
                                 data-target="#of-restoreserversmodal"
                                 >Reset to Default Servers</a
                             >
+                            <a
+                                href="#of-restoreversionsmodal"
+                                onclick="$('#of-aboutmodal').modal('toggle')"
+                                data-toggle="modal"
+                                data-target="#of-restoreversionsmodal"
+                                >Reset to Default Game Builds</a
+                            >
                         </div>
                         <div class="modal-footer">
                             <div class="row flex-fill">
@@ -169,7 +200,7 @@
                                         data-bs-tooltip=""
                                         type="button"
                                         title="Github Page"
-                                        onclick="window.open(&#39;https://github.com/OpenFusionProject/OpenFusion&#39;,&#39;_blank&#39;);"
+                                        onclick="window.open('https://github.com/OpenFusionProject/OpenFusion','_blank');"
                                     >
                                         <i
                                             class="fab fa-github"
@@ -181,7 +212,7 @@
                                         data-bs-tooltip=""
                                         type="button"
                                         title="Discord Chat"
-                                        onclick="window.open(&#39;https://discord.gg/DYavckB&#39;,&#39;_blank&#39;);"
+                                        onclick="window.open('https://discord.gg/DYavckB','_blank');"
                                     >
                                         <i
                                             class="fab fa-discord"
@@ -238,6 +269,7 @@
                                     required=""
                                     minlength="1"
                                     maxlength="70"
+                                    oninput="validateServerSave('add')"
                                 /><label for="addserver-ipinput"
                                     >Server IP</label
                                 ><input
@@ -245,8 +277,10 @@
                                     type="text"
                                     id="addserver-ipinput"
                                     placeholder="127.0.0.1:23000"
+                                    value="127.0.0.1:23000"
                                     required=""
-                                    pattern="^(([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])\.){3}([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5]):[0-9]+$"
+                                    pattern="^([-a-zA-Z0-9]+\.)+[-a-zA-Z0-9]+:[0-9]+$"
+                                    oninput="validateServerSave('add')"
                                 /><label for="addserver-versionselect"
                                     >Game Version:&nbsp;</label
                                 ><select
@@ -254,6 +288,7 @@
                                     id="addserver-versionselect"
                                     required=""
                                     style="margin-left: -5px"
+                                    oninput="validateServerSave('add')"
                                 ></select>
                             </form>
                         </div>
@@ -310,7 +345,8 @@
                                     required=""
                                     minlength="1"
                                     maxlength="70"
-                                /><label for="addserver-ipinput"
+                                    oninput="validateServerSave('edit')"
+                                /><label for="editserver-ipinput"
                                     >Server IP</label
                                 ><input
                                     class="form-control form-row w-75"
@@ -318,7 +354,8 @@
                                     id="editserver-ipinput"
                                     placeholder="127.0.0.1:23000"
                                     required=""
-                                    pattern="^(([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])\.){3}([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5]):[0-9]+$"
+                                    pattern="^([-a-zA-Z0-9]+\.)+[-a-zA-Z0-9]+:[0-9]+$"
+                                    oninput="validateServerSave('edit')"
                                 /><label for="editserver-versionselect"
                                     >Game Version:&nbsp;</label
                                 ><select
@@ -326,6 +363,7 @@
                                     id="editserver-versionselect"
                                     required=""
                                     style="margin-left: -5px"
+                                    oninput="validateServerSave('edit')"
                                 ></select>
                             </form>
                         </div>
@@ -339,7 +377,7 @@
                                 Cancel</button
                             ><button
                                 class="btn btn-primary border rounded border-primary btn-success border-success"
-                                id="addserver-savebutton"
+                                id="editserver-savebutton"
                                 type="submit"
                                 data-dismiss="modal"
                                 form="editserver-form"
@@ -432,7 +470,7 @@
                                 Cancel</button
                             ><button
                                 class="btn btn-primary border rounded border-primary btn-danger border-danger"
-                                id="deleteserver-button"
+                                id="restoreservers-button"
                                 type="button"
                                 data-dismiss="modal"
                                 onclick="restoreDefaultServers();"
@@ -443,6 +481,401 @@
                     </div>
                 </div>
             </div>
+            <div
+                class="modal fade"
+                role="dialog"
+                tabindex="-1"
+                id="of-editconfigmodal"
+            >
+                <div class="modal-dialog modal-dialog-centered" role="document">
+                    <div class="modal-content">
+                        <div class="modal-header">
+                            <h4 class="modal-title">Edit Configuration</h4>
+                            <button
+                                type="button"
+                                class="close"
+                                data-dismiss="modal"
+                                aria-label="Close"
+                            >
+                                <span aria-hidden="true">×</span>
+                            </button>
+                        </div>
+                        <div class="modal-body">
+                            <form id="editconfig-form" class="needs-validation">
+                                <label for="editconfig-autoupdate"
+                                    >Automatically update the client:</label
+                                ><input
+                                    class="form-control form-row w-75"
+                                    type="checkbox"
+                                    id="editconfig-autoupdate"
+                                />
+                                <label for="editconfig-cacheswapping"
+                                    >Swap game caches to avoid unnecessary downloads:</label
+                                ><input
+                                    class="form-control form-row w-75"
+                                    type="checkbox"
+                                    id="editconfig-cacheswapping"
+                                />
+                                <label for="editconfig-enableofflinecache"
+                                    >Use offline caches when they are available:</label
+                                ><input
+                                    class="form-control form-row w-75"
+                                    type="checkbox"
+                                    id="editconfig-enableofflinecache"
+                                />
+                                <label for="editconfig-verifyofflinecache"
+                                    >Verify offline caches every time they are loaded:</label
+                                ><input
+                                    class="form-control form-row w-75"
+                                    type="checkbox"
+                                    id="editconfig-verifyofflinecache"
+                                />
+                                <label for="editconfig-offlinecachelocation"
+                                    >Select Offline Cache Location:</label
+                                ><input
+                                    class="form-control form-row w-75"
+                                    id="editconfig-offlinecachelocation"
+                                    type="text"
+                                    oninput="validateCacheLocation()"
+                                />
+                            </form>
+                        </div>
+                        <div class="modal-footer">
+                            <button
+                                class="btn btn-primary border rounded border-primary btn-danger border-danger"
+                                id="editconfig-cancel"
+                                type="button"
+                                data-dismiss="modal"
+                            >
+                                Cancel</button
+                            ><button
+                                class="btn btn-primary border rounded border-primary btn-success border-success"
+                                id="editconfig-savebutton"
+                                type="submit"
+                                data-dismiss="modal"
+                                form="editconfig-form"
+                                onclick="editConfig();"
+                            >
+                                Save
+                            </button>
+                        </div>
+                    </div>
+                </div>
+            </div>
+            <div
+                class="modal fade"
+                role="dialog"
+                tabindex="-1"
+                id="of-editcacheconfigmodal"
+            >
+                <div class="modal-dialog modal-dialog-centered modal-lg" role="document">
+                    <div class="modal-content">
+                        <div class="modal-header">
+                            <h4 class="modal-title">Edit Game Builds</h4>
+                            <button
+                                type="button"
+                                class="close"
+                                data-dismiss="modal"
+                                aria-label="Close"
+                            >
+                                <span aria-hidden="true">×</span>
+                            </button>
+                        </div>
+                        <div class="modal-body">
+                            <div
+                                class="row row-cols-2 d-xl-flex justify-content-center justify-content-xl-start"
+                                id="of-versionbuttons"
+                                style="padding-bottom: 16px"
+                            >
+                                <div
+                                    class="col-4 text-left d-inline-flex justify-content-xl-start"
+                                    id="cache-buttons"
+                                >
+                                    <button
+                                        class="btn btn-success mr-1"
+                                        data-toggle="modal"
+                                        data-bs-tooltip=""
+                                        data-placement="bottom"
+                                        id="of-addversion-button"
+                                        type="button"
+                                        title="Add Version"
+                                        data-target="#of-addversionmodal"
+                                        onclick="deselectVersion()"
+                                    >
+                                        <i class="fas fa-plus"></i>
+                                    </button>
+                                    <button
+                                        class="btn btn-primary mr-1 disabled"
+                                        data-toggle="modal"
+                                        data-bs-tooltip=""
+                                        data-placement="bottom"
+                                        id="of-editversion-button"
+                                        type="button"
+                                        title="Edit Version"
+                                        data-target="#of-editversionmodal"
+                                        disabled=""
+                                    >
+                                        <i class="fas fa-edit"></i>
+                                    </button>
+                                    <button
+                                        class="btn btn-danger mr-1 disabled"
+                                        data-toggle="modal"
+                                        data-bs-tooltip=""
+                                        data-placement="bottom"
+                                        id="of-deleteversion-button"
+                                        type="button"
+                                        title="Delete Version"
+                                        data-target="#of-deleteversionmodal"
+                                        disabled=""
+                                    >
+                                        <i class="fas fa-trash-alt"></i>
+                                    </button>
+                                </div>
+                            </div>
+                            <div
+                                class="table-responsive text-center border rounded border-primary"
+                                id="cache-table"
+                            >
+                                <table class="table table-striped table-hover mb-0">
+                                    <thead>
+                                        <tr>
+                                            <th>Game Version</th>
+                                            <th>Game Cache</th>
+                                            <th>Offline Cache</th>
+                                        </tr>
+                                    </thead>
+                                    <tbody id="cache-tablebody">
+                                    </tbody>
+                                </table>
+                            </div>
+                        </div>
+                    </div>
+                </div>
+            </div>
+            <div
+                class="modal fade"
+                role="dialog"
+                tabindex="-1"
+                id="of-addversionmodal"
+            >
+                <div class="modal-dialog modal-dialog-centered" role="document">
+                    <div class="modal-content">
+                        <div class="modal-header">
+                            <h4 class="modal-title">Add Server</h4>
+                            <button
+                                type="button"
+                                class="close"
+                                data-dismiss="modal"
+                                aria-label="Close"
+                            >
+                                <span aria-hidden="true">×</span>
+                            </button>
+                        </div>
+                        <div class="modal-body">
+                            <form id="addversion-form" class="needs-validation">
+                                <label for="addversion-nameinput"
+                                    >Version Name</label
+                                ><input
+                                    class="form-control form-row w-75"
+                                    type="text"
+                                    id="addversion-nameinput"
+                                    placeholder="custom-build-000"
+                                    required=""
+                                    pattern="^[-a-zA-Z0-9_]{1,70}$"
+                                    oninput="validateVersionSave('add')"
+                                /><label for="addversion-urlinput"
+                                    >Version URL</label
+                                ><input
+                                    class="form-control form-row w-75"
+                                    type="text"
+                                    id="addversion-urlinput"
+                                    placeholder="http://cdn.dexlabs.systems/custom-build-000/"
+                                    required=""
+                                    pattern="^(https?|file):\/\/\/?([-a-zA-Z0-9@:%._\+~#= ]{1,256}\/){1,64}$"
+                                    oninput="validateVersionSave('add')"
+                                />
+                            </form>
+                        </div>
+                        <div class="modal-footer">
+                            <button
+                                class="btn btn-primary border rounded border-primary btn-danger border-danger"
+                                id="addversion-cancel"
+                                type="button"
+                                data-dismiss="modal"
+                            >
+                                Cancel</button
+                            ><button
+                                class="btn btn-primary border rounded border-primary btn-success border-success"
+                                id="addversion-savebutton"
+                                type="submit"
+                                data-dismiss="modal"
+                                form="addversion-form"
+                                onclick="addVersion();"
+                            >
+                                Save
+                            </button>
+                        </div>
+                    </div>
+                </div>
+            </div>
+            <div
+                class="modal fade"
+                role="dialog"
+                tabindex="-1"
+                id="of-editversionmodal"
+            >
+                <div class="modal-dialog modal-dialog-centered" role="document">
+                    <div class="modal-content">
+                        <div class="modal-header">
+                            <h4 class="modal-title">Edit Version</h4>
+                            <button
+                                type="button"
+                                class="close"
+                                data-dismiss="modal"
+                                aria-label="Close"
+                            >
+                                <span aria-hidden="true">×</span>
+                            </button>
+                        </div>
+                        <div class="modal-body">
+                            <form id="editversion-form" class="needs-validation">
+                                <label for="editversion-nameinput"
+                                    >Version Name</label
+                                ><input
+                                    class="form-control form-row w-75"
+                                    type="text"
+                                    id="editversion-nameinput"
+                                    placeholder="custom-build-000"
+                                    required=""
+                                    pattern="^[-a-zA-Z0-9_]{1,70}$"
+                                    oninput="validateVersionSave('edit')"
+                                /><label for="editversion-urlinput"
+                                    >Version URL</label
+                                ><input
+                                    class="form-control form-row w-75"
+                                    type="text"
+                                    id="editversion-urlinput"
+                                    placeholder="http://cdn.dexlabs.systems/custom-build-000/"
+                                    required=""
+                                    pattern="^(https?|file):\/\/\/?([-a-zA-Z0-9@:%._\+~#= ]{1,256}\/){1,64}$"
+                                    oninput="validateVersionSave('edit')"
+                                />
+                            </form>
+                        </div>
+                        <div class="modal-footer">
+                            <button
+                                class="btn btn-primary border rounded border-primary btn-danger border-danger"
+                                id="editversion-cancel"
+                                type="button"
+                                data-dismiss="modal"
+                            >
+                                Cancel</button
+                            ><button
+                                class="btn btn-primary border rounded border-primary btn-success border-success"
+                                id="editversion-savebutton"
+                                type="submit"
+                                data-dismiss="modal"
+                                form="editversion-form"
+                                onclick="editVersion();"
+                            >
+                                Save
+                            </button>
+                        </div>
+                    </div>
+                </div>
+            </div>
+            <div
+                class="modal fade"
+                role="dialog"
+                tabindex="-1"
+                id="of-deleteversionmodal"
+            >
+                <div class="modal-dialog modal-dialog-centered" role="document">
+                    <div class="modal-content">
+                        <div class="modal-header">
+                            <h4 class="modal-title">Are you sure?</h4>
+                            <button
+                                type="button"
+                                class="close"
+                                data-dismiss="modal"
+                                aria-label="Close"
+                            >
+                                <span aria-hidden="true">×</span>
+                            </button>
+                        </div>
+                        <div class="modal-body">
+                            <p class="lead">
+                                Do you really want to delete<br />"<a
+                                    id="deleteversion-versionname"
+                                    >VERSION_NAME</a
+                                >"?<br /><br />You could always re-add it later.
+                            </p>
+                        </div>
+                        <div class="modal-footer">
+                            <button
+                                class="btn btn-primary border rounded border-primary"
+                                type="button"
+                                data-dismiss="modal"
+                            >
+                                Cancel</button
+                            ><button
+                                class="btn btn-primary border rounded border-primary btn-danger border-danger"
+                                id="deleteversion-button"
+                                type="button"
+                                data-dismiss="modal"
+                                onclick="deleteVersion();"
+                            >
+                                Yes, Delete
+                            </button>
+                        </div>
+                    </div>
+                </div>
+            </div>
+            <div
+                class="modal fade"
+                role="dialog"
+                tabindex="-1"
+                id="of-restoreversionsmodal"
+            >
+                <div class="modal-dialog modal-dialog-centered" role="document">
+                    <div class="modal-content">
+                        <div class="modal-header">
+                            <h4 class="modal-title">Are you sure?</h4>
+                            <button
+                                type="button"
+                                class="close"
+                                data-dismiss="modal"
+                                aria-label="Close"
+                            >
+                                <span aria-hidden="true">×</span>
+                            </button>
+                        </div>
+                        <div class="modal-body">
+                            <p class="lead">
+                                Do you really want to restore the default
+                                versions?
+                            </p>
+                        </div>
+                        <div class="modal-footer">
+                            <button
+                                class="btn btn-primary border rounded border-primary"
+                                type="button"
+                                data-dismiss="modal"
+                            >
+                                Cancel</button
+                            ><button
+                                class="btn btn-primary border rounded border-primary btn-danger border-danger"
+                                id="restoreversions-button"
+                                type="button"
+                                data-dismiss="modal"
+                                onclick="restoreDefaultVersions();"
+                            >
+                                Yes, Restore
+                            </button>
+                        </div>
+                    </div>
+                </div>
+            </div>
             <div id="of-versionnumberdiv">
                 <a
                     id="of-versionnumber"

index.js

@@ -28,14 +28,16 @@ var userData = app.getPath("userData");
 var configPath = path.join(userData, "config.json");
 var serversPath = path.join(userData, "servers.json");
 var versionsPath = path.join(userData, "versions.json");
+var hashPath = path.join(userData, "hashes.json");
 
 function initialSetup(firstTime) {
     if (!firstTime) {
-        // Migration from pre-1.4
+        // Migration from pre-1.6
         // Back everything up, just in case
         fs.copySync(configPath, configPath + ".bak");
         fs.copySync(serversPath, serversPath + ".bak");
         fs.copySync(versionsPath, versionsPath + ".bak");
+        fs.copySync(hashPath, hashPath + ".bak");
     } else {
         // First-time setup
         // Copy default servers
@@ -48,6 +50,7 @@ function initialSetup(firstTime) {
     // Copy default versions and config
     fs.copySync(path.join(__dirname, "/defaults/versions.json"), versionsPath);
     fs.copySync(path.join(__dirname, "/defaults/config.json"), configPath);
+    fs.copySync(path.join(__dirname, "/defaults/hashes.json"), hashPath);
 
     console.log("JSON files copied.");
     showMainWindow();
@@ -90,8 +93,8 @@ app.on("ready", function () {
             initialSetup(true);
         } else {
             var config = fs.readJsonSync(configPath);
-            if (!config["last-version-initialized"]) {
-                console.log("Pre-1.4 config detected. Running migration.");
+            if (config["last-version-initialized"] !== "1.6") {
+                console.log("Pre-1.6 config detected. Running migration.");
                 initialSetup(false);
             } else {
                 showMainWindow();
@@ -128,6 +131,7 @@ function showMainWindow() {
         mainWindow.webContents.executeJavaScript("loadConfig();");
         mainWindow.webContents.executeJavaScript("loadGameVersions();");
         mainWindow.webContents.executeJavaScript("loadServerList();");
+        mainWindow.webContents.executeJavaScript("loadCacheList();");
     });
 
     mainWindow.webContents.on("plugin-crashed", function () {