separate more rpc functionality into pinning and core submodules

lib/commands/core.js

@@ -0,0 +1,42 @@
+/*jshint esversion: 6 */
+const Core = module.exports;
+const Util = require("../common-util");
+const escapeKeyCharacters = Util.escapeKeyCharacters;
+
+Core.DEFAULT_LIMIT = 50 * 1024 * 1024;
+Core.SESSION_EXPIRATION_TIME = 60 * 1000;
+
+Core.isValidId = function (chan) {
+    return chan && chan.length && /^[a-zA-Z0-9=+-]*$/.test(chan) &&
+        [32, 48].indexOf(chan.length) > -1;
+};
+
+var makeToken = Core.makeToken = function () {
+    return Number(Math.floor(Math.random() * Number.MAX_SAFE_INTEGER))
+        .toString(16);
+};
+
+Core.getSession = function (Sessions, key) {
+    var safeKey = escapeKeyCharacters(key);
+    if (Sessions[safeKey]) {
+        Sessions[safeKey].atime = +new Date();
+        return Sessions[safeKey];
+    }
+    var user = Sessions[safeKey] = {};
+    user.atime = +new Date();
+    user.tokens = [
+        makeToken()
+    ];
+    return user;
+};
+
+
+
+// getChannelList
+// getSession
+// getHash
+// getMultipleFileSize
+// sumChannelSizes
+// getFreeSpace
+// getLimit
+