Merge branch 'feat/snapcraft' of mkg20001/telebit-relay.js into master

.gitignore

@@ -43,3 +43,12 @@ jspm_packages
 
 # Optional REPL history
 .node_repl_history
+
+# Snapcraft
+/parts/
+/prime/
+/stage/
+.snapcraft
+*.snap
+*.tar.bz2
+

bin/telebit-relay.js

@@ -47,7 +47,13 @@ function applyConfig(config) {
   } else {
     state.Promise = require('bluebird');
   }
-  state.tlsOptions = {}; // TODO just close the sockets that would use this early? or use the admin servername
+  state.tlsOptions = {
+    // Handles disconnected devices
+    // TODO allow user to opt-in to wildcard hosting for a better error page?
+    SNICallback: function (servername, cb) {
+      return state.greenlock.tlsOptions.SNICallback(state.config.webminDomain || state.servernames[0], cb);
+    }
+  }; // TODO just close the sockets that would use this early? or use the admin servername
   state.config = config;
   state.servernames = config.servernames || [];
   state.secret = state.config.secret;

lib/ago-test.js

@@ -0,0 +1,35 @@
+'use strict';
+
+var timeago = require('./ago.js').AGO;
+
+function test() {
+  [ 1.5 * 1000 // a moment ago
+  , 4.5 * 1000 // moments ago
+  , 10  * 1000 // 10 seconds ago
+  , 59  * 1000 // a minute ago
+  , 60  * 1000 // a minute ago
+  , 61  * 1000 // a minute ago
+  , 119  * 1000 // a minute ago
+  , 120  * 1000 // 2 minutes ago
+  , 121 * 1000 // 2 minutes ago
+  , (60 * 60 * 1000) - 1000 // 59 minutes ago
+  , 1 * 60 * 60 * 1000 // an hour ago
+  , 1.5 * 60 * 60 * 1000 // an hour ago
+  , 2.5 * 60 * 60 * 1000 // 2 hours ago
+  , 1.5 * 24 * 60 * 60 * 1000 // a day ago
+  , 2.5 * 24 * 60 * 60 * 1000 // 2 days ago
+  , 7 * 24 * 60 * 60 * 1000 // a week ago
+  , 14 * 24 * 60 * 60 * 1000 // 2 weeks ago
+  , 27 * 24 * 60 * 60 * 1000 // 3 weeks ago
+  , 28 * 24 * 60 * 60 * 1000 // 4 weeks ago
+  , 29 * 24 * 60 * 60 * 1000 // 4 weeks ago
+  , 1.5 * 30 * 24 * 60 * 60 * 1000 // a month ago
+  , 2.5 * 30 * 24 * 60 * 60 * 1000 // 2 months ago
+  , (12 * 30 * 24 * 60 * 60 * 1000) + 1000 // 12 months ago
+  , 13 * 30 * 24 * 60 * 60 * 1000 // over a year ago
+  ].forEach(function (d) {
+    console.log(d, '=', timeago(d));
+  });
+}
+
+test();

lib/ago.js

@@ -0,0 +1,50 @@
+;(function (exports) {
+'use strict';
+
+exports.AGO = function timeago(ms) {
+  var ago = Math.floor(ms / 1000);
+  var part = 0;
+
+  if (ago < 2) { return "a moment ago"; }
+  if (ago < 5) { return "moments ago"; }
+  if (ago < 60) { return ago + " seconds ago"; }
+
+  if (ago < 120) { return "a minute ago"; }
+  if (ago < 3600) {
+    while (ago >= 60) { ago -= 60; part += 1; }
+    return part + " minutes ago";
+  }
+
+  if (ago < 7200) { return "an hour ago"; }
+  if (ago < 86400) {
+    while (ago >= 3600) { ago -= 3600; part += 1; }
+    return part + " hours ago";
+  }
+
+  if (ago < 172800) { return "a day ago"; }
+  if (ago < 604800) {
+    while (ago >= 172800) { ago -= 172800; part += 1; }
+    return part + " days ago";
+  }
+
+  if (ago < 1209600) { return "a week ago"; }
+  if (ago < 2592000) {
+    while (ago >= 604800) { ago -= 604800; part += 1; }
+    return part + " weeks ago";
+  }
+
+  if (ago < 5184000) { return "a month ago"; }
+  if (ago < 31536001) {
+    while (ago >= 2592000) { ago -= 2592000; part += 1; }
+    return part + " months ago";
+  }
+
+  if (ago < 315360000) { // 10 years
+    return "more than year ago";
+  }
+
+  // TODO never
+  return "";
+};
+
+}('undefined' !== typeof module ? module.exports : window));

lib/device-tracker.js

@@ -1,6 +1,7 @@
 'use strict';
 
 var Devices = module.exports;
+// TODO enumerate store's keys and device's keys for documentation
 Devices.addPort = function (store, serverport, newDevice) {
   // TODO make special
   return Devices.add(store, serverport, newDevice, true);
@@ -14,6 +15,7 @@ Devices.add = function (store, servername, newDevice, isPort) {
   if (!store._domains) { store._domains = {}; }
   if (!store._domains[servername]) { store._domains[servername] = []; }
   store._domains[servername].push(newDevice);
+  Devices.touch(store, servername);
 
   // add device
   // TODO only use a device id 
@@ -126,7 +128,11 @@ Devices.active = function (store, id) {
 };
 */
 Devices.exist = function (store, servername) {
-  return !!(Devices.list(store, servername).length);
+  if (Devices.list(store, servername).length) {
+    Devices.touch(store, servername);
+    return true;
+  }
+  return false;
 };
 Devices.next = function (store, servername) {
   var devices = Devices.list(store, servername);
@@ -138,5 +144,20 @@ Devices.next = function (store, servername) {
   device = devices[devices._index || 0];
   devices._index = (devices._index || 0) + 1;
 
+  if (device) { Devices.touch(store, servername); }
   return device;
 };
+Devices.touchDevice = function (store, device) {
+  // TODO use device.id (which will be pubkey thumbprint) and store._devices[id].domainsMap
+  Object.keys(device.domainsMap).forEach(function (servername) {
+    Devices.touch(store, servername);
+  });
+};
+Devices.touch = function (store, servername) {
+  if (!store._recency) { store._recency = {}; }
+  store._recency[servername] = Date.now();
+};
+Devices.lastSeen = function (store, servername) {
+  if (!store._recency) { store._recency = {}; }
+  return store._recency[servername] || 0;
+};

lib/handlers.js

@@ -10,7 +10,7 @@ function noSniCallback(tag) {
     var err = new Error("[noSniCallback] no handler set for '" + tag + "':'" + servername + "'");
     console.error(err.message);
     cb(new Error(err));
-  }
+  };
 }
 
 module.exports.create = function (state) {
@@ -72,38 +72,44 @@ module.exports.create = function (state) {
   state.tlsInvalidSniServer.on('tlsClientError', function () {
     console.error('tlsClientError InvalidSniServer');
   });
-  state.httpsInvalid = function (servername, socket) {
+  state.createHttpInvalid = function (opts) {
+    return http.createServer(function (req, res) {
+      if (!opts.servername) {
+        res.statusCode = 422;
+        res.setHeader('Content-Type', 'text/plain; charset=utf-8');
+        res.end(
+          "3. An inexplicable temporal shift of the quantum realm... that makes me feel uncomfortable.\n\n"
+        + "[ERROR] No SNI header was sent. I can only think of two possible explanations for this:\n"
+        + "\t1. You really love Windows XP and you just won't let go of Internet Explorer 6\n"
+        + "\t2. You're writing a bot and you forgot to set the servername parameter\n"
+        );
+        return;
+      }
+
+      // TODO use req.headers.host instead of servername (since domain fronting is disabled anyway)
+      res.statusCode = 502;
+      res.setHeader('Content-Type', 'text/html; charset=utf-8');
+      res.end(
+        "<h1>Oops!</h1>"
+      + "<p>It looks like '" + encodeURIComponent(opts.servername) + "' isn't connected right now.</p>"
+      + "<p><small>Last seen: " + opts.ago + "</small></p>"
+      + "<p><small>Error: 502 Bad Gateway</small></p>"
+      );
+    });
+  };
+  state.httpsInvalid = function (opts, socket) {
     // none of these methods work:
     // httpsServer.emit('connection', socket);  // this didn't work
     // tlsServer.emit('connection', socket);    // this didn't work either
     //console.log('chunkLen', firstChunk.byteLength);
 
-    console.log('[httpsInvalid] servername', servername);
+    console.log('[httpsInvalid] servername', opts.servername);
     //state.tlsInvalidSniServer.emit('connection', wrapSocket(socket));
     var tlsInvalidSniServer = tls.createServer(state.tlsOptions, function (tlsSocket) {
       console.log('[tlsInvalid] tls connection');
-      // things get a little messed up here
-      var httpInvalidSniServer = http.createServer(function (req, res) {
-        if (!servername) {
-          res.statusCode = 422;
-          res.end(
-            "3. An inexplicable temporal shift of the quantum realm... that makes me feel uncomfortable.\n\n"
-          + "[ERROR] No SNI header was sent. I can only think of two possible explanations for this:\n"
-          + "\t1. You really love Windows XP and you just won't let go of Internet Explorer 6\n"
-          + "\t2. You're writing a bot and you forgot to set the servername parameter\n"
-          );
-          return;
-        }
-
-        res.end(
-          "You came in hot looking for '" + servername + "' and, granted, the IP address for that domain"
-        + " must be pointing here (or else how could you be here?), nevertheless either it's not registered"
-        + " in the internal system at all (which Seth says isn't even a thing) or there is no device"
-        + " connected on the south side of the network which has informed me that it's ready to have traffic"
-        + " for that domain forwarded to it (sorry I didn't check that deeply to determine which).\n\n"
-        + "Either way, you're doing strange things that make me feel uncomfortable... Please don't touch me there any more.");
-      });
-      httpInvalidSniServer.emit('connection', tlsSocket);
+      // We create an entire http server object because it's difficult to figure out
+      // how to access the original tlsSocket to get the servername
+      state.createHttpInvalid(opts).emit('connection', tlsSocket);
     });
     tlsInvalidSniServer.on('tlsClientError', function () {
       console.error('tlsClientError InvalidSniServer httpsInvalid');

lib/server.js

@@ -172,6 +172,7 @@ var Server = {
 , _initSocketHandlers: function (state, srv) {
     function refreshTimeout() {
       srv.lastActivity = Date.now();
+      Devices.touchDevice(state.deviceLists, srv);
     }
 
     function checkTimeout() {

lib/unwrap-tls.js

@@ -2,6 +2,16 @@
 
 var sni = require('sni');
 var pipeWs = require('./pipe-ws.js');
+var ago = require('./ago.js').AGO;
+var up = Date.now();
+
+function fromUptime(ms) {
+  if (ms) {
+    return ago(Date.now() - ms);
+  } else {
+    return "Not seen since relay restarted, " + ago(Date.now() - up);
+  }
+}
 
 module.exports.createTcpConnectionHandler = function (state) {
   var Devices = state.Devices;
@@ -27,6 +37,16 @@ module.exports.createTcpConnectionHandler = function (state) {
       var str;
       var m;
 
+      if (!firstChunk) {
+        try {
+          conn.end();
+        } catch(e) {
+          console.error("[lib/unwrap-tls.js] Error:", e);
+          conn.destroy();
+        }
+        return;
+      }
+
       //conn.pause();
       conn.unshift(firstChunk);
 
@@ -38,8 +58,15 @@ module.exports.createTcpConnectionHandler = function (state) {
 
       // defer after return (instead of being in many places)
       function deferData(fn) {
-        if (fn) {
+        if ('httpsInvalid' === fn) {
+          state[fn]({
+            servername: servername
+          , ago: fromUptime(Devices.lastSeen(state.deviceLists, servername))
+          }, conn);
+        } else if (fn) {
           state[fn](servername, conn);
+        } else {
+          console.error("[SANITY ERROR] '" + fn + "' doesn't have a state handler");
         }
         /*
         process.nextTick(function () {
@@ -48,33 +75,81 @@ module.exports.createTcpConnectionHandler = function (state) {
         */
       }
 
-      function tryTls() {
-        var vhost;
-
-        if (!state.servernames.length) {
-          console.info("[Setup] https => admin => setup => (needs bogus tls certs to start?)");
-          deferData('httpsSetupServer');
-          return;
+      var httpOutcomes = {
+        missingServername: function () {
+          console.log("[debug] [http] missing servername");
+          // TODO use a more specific error page
+          deferData('handleInsecureHttp');
         }
-
-        if (-1 !== state.servernames.indexOf(servername)) {
-          if (state.debug) { console.log("[Admin]", servername); }
-          deferData('httpsTunnel');
-          return;
+      , requiresSetup: function () {
+          console.log("[debug] [http] requires setup");
+          // TODO Insecure connections for setup will not work on secure domains (i.e. .app)
+          state.httpSetupServer.emit('connection', conn);
         }
-
-        if (state.config.nowww && /^www\./i.test(servername)) {
-          console.log("TODO: use www bare redirect");
+      , isInternal: function () {
+          console.log("[debug] [http] is known internally (admin)");
+          if (/well-known/.test(str)) {
+            deferData('handleHttp');
+          } else {
+            deferData('handleInsecureHttp');
+          }
         }
+      , isVhost: function () {
+          console.log("[debug] [http] is vhost (normal server)");
+          if (/well-known/.test(str)) {
+            deferData('handleHttp');
+          } else {
+            deferData('handleInsecureHttp');
+          }
+        }
+      , assumeExternal: function () {
+          console.log("[debug] [http] assume external");
+          var service = 'http';
 
-        if (!servername) {
+          if (!Devices.exist(state.deviceLists, servername)) {
+            // It would be better to just re-read the host header rather
+            // than creating a whole server object, but this is a "rare"
+            // case and I'm feeling lazy right now.
+            console.log("[debug] [http] no device connected");
+            state.createHttpInvalid({
+              servername: servername
+            , ago: fromUptime(Devices.lastSeen(state.deviceLists, servername))
+            }).emit('connection', conn);
+            return;
+          }
+
+          // TODO make https redirect configurable on a per-domain basis
+          // /^\/\.well-known\/acme-challenge\//.test(str)
+          if (/well-known/.test(str)) {
+            // HTTP
+            console.log("[debug] [http] passthru");
+            pipeWs(servername, service, Devices.next(state.deviceLists, servername), conn, serviceport);
+            return;
+          } else {
+            console.log("[debug] [http] redirect to https");
+            deferData('handleInsecureHttp');
+          }
+        }
+      };
+      var tlsOutcomes = {
+        missingServername: function () {
           if (state.debug) { console.log("No SNI was given, so there's nothing we can do here"); }
           deferData('httpsInvalid');
-          return;
         }
-
-        function run() {
-          var nextDevice = Devices.next(state.deviceLists, servername);
+      , requiresSetup: function () {
+          console.info("[Setup] https => admin => setup => (needs bogus tls certs to start?)");
+          deferData('httpsSetupServer');
+        }
+      , isInternal: function () {
+          if (state.debug) { console.log("[Admin]", servername); }
+          deferData('httpsTunnel');
+        }
+      , isVhost: function (vhost) {
+          if (state.debug) { console.log("[tcp] [vhost]", state.config.vhost, "=>", vhost); }
+          deferData('httpsVhost');
+        }
+      , assumeExternal: function () {
+         var nextDevice = Devices.next(state.deviceLists, servername);
           if (!nextDevice) {
             if (state.debug) { console.log("No devices match the given servername"); }
             deferData('httpsInvalid');
@@ -82,27 +157,33 @@ module.exports.createTcpConnectionHandler = function (state) {
           }
 
           if (state.debug) { console.log("pipeWs(servername, service, deviceLists['" + servername + "'], socket)"); }
-          deferData();
           pipeWs(servername, service, nextDevice, conn, serviceport);
         }
+      };
+
+      function handleConnection(outcomes) {
+        var vhost;
+
+        // No routing information available
+        if (!servername) { outcomes.missingServername(); return; }
+        // Server needs to be set up
+        if (!state.servernames.length) { outcomes.requiresSetup(); return; }
+        // This is one of the admin domains
+        if (-1 !== state.servernames.indexOf(servername)) { outcomes.isInternal(); return; }
 
         // TODO don't run an fs check if we already know this is working elsewhere
         //if (!state.validHosts) { state.validHosts = {}; }
         if (state.config.vhost) {
-          vhost = state.config.vhost.replace(/:hostname/, (servername||'reallydoesntexist'));
-          if (state.debug) { console.log("[tcp] [vhost]", state.config.vhost, "=>", vhost); }
-          //state.httpsVhost(servername, conn);
-          //return;
+          vhost = state.config.vhost.replace(/:hostname/, servername);
           require('fs').readdir(vhost, function (err, nodes) {
             if (state.debug && err) { console.log("VHOST error", err); }
-            if (err || !nodes) { run(); return; }
-            //if (nodes) { deferData('httpsVhost'); return; }
-            deferData('httpsVhost');
+            if (err || !nodes) { outcomes.assumeExternal(); return; }
+            outcomes.isVhost(vhost);
           });
           return;
         }
 
-        run();
+        outcomes.assumeExternal();
       }
 
       // https://github.com/mscdex/httpolyglot/issues/3#issuecomment-173680155
@@ -111,40 +192,19 @@ module.exports.createTcpConnectionHandler = function (state) {
         service = 'https';
         servername = (sni(firstChunk)||'').toLowerCase().trim();
         if (state.debug) { console.log("[tcp] tls hello from '" + servername + "'"); }
-        tryTls();
+        handleConnection(tlsOutcomes);
         return;
       }
 
       if (firstChunk[0] > 32 && firstChunk[0] < 127) {
+        // (probably) HTTP
         str = firstChunk.toString();
         m = str.match(/(?:^|[\r\n])Host: ([^\r\n]+)[\r\n]*/im);
         servername = (m && m[1].toLowerCase() || '').split(':')[0];
         if (state.debug) { console.log("[tcp] http hostname '" + servername + "'"); }
 
         if (/HTTP\//i.test(str)) {
-          if (!state.servernames.length) {
-            console.info("[tcp] No admin servername. Entering setup mode.");
-            deferData();
-            state.httpSetupServer.emit('connection', conn);
-            return;
-          }
-
-          service = 'http';
-          // TODO make https redirect configurable
-          // /^\/\.well-known\/acme-challenge\//.test(str)
-          if (/well-known/.test(str)) {
-            // HTTP
-            if (Devices.exist(state.deviceLists, servername)) {
-              deferData();
-              pipeWs(servername, service, Devices.next(state.deviceLists, servername), conn, serviceport);
-              return;
-            }
-            deferData('handleHttp');
-            return;
-          }
-
-          // redirect to https
-          deferData('handleInsecureHttp');
+          handleConnection(httpOutcomes);
           return;
         }
       }

snap/snapcraft.yaml

@@ -0,0 +1,24 @@
+name: telebit-relay
+version: '0.20.0'
+summary: Because friends don't let friends localhost
+description: |
+  A server that works in combination with Telebit Remote
+  to allow you to serve http and https from any computer,
+  anywhere through a secure tunnel.
+
+grade: stable
+confinement: strict
+
+apps:
+  telebit-relay:
+    command: telebit-relay --config $SNAP_COMMON/config.yml
+    plugs: [network, network-bind]
+    daemon: simple
+
+parts:
+  telebit-relay:
+    plugin: nodejs
+    node-engine: 10.13.0
+    source: .
+    override-build: |
+      snapcraftctl build