From b4a210894243f8d46f601c4c56e9c23c7a37fd10 Mon Sep 17 00:00:00 2001
From: AJ ONeal <coolaj86@gmail.com>
Date: Fri, 15 Jun 2018 22:45:42 +0000
Subject: [PATCH] check standard apis

---
 bin/telebit.js | 77 +++++++++++++++++++++++++++++++++++++++-----------
 1 file changed, 61 insertions(+), 16 deletions(-)

diff --git a/bin/telebit.js b/bin/telebit.js
index 219baaa..a4605a8 100755
--- a/bin/telebit.js
+++ b/bin/telebit.js
@@ -8,6 +8,7 @@ var os = require('os');
 //var url = require('url');
 var path = require('path');
 var http = require('http');
+var https = require('https');
 var YAML = require('js-yaml');
 var recase = require('recase').create({});
 var camelCopy = recase.camelCopy.bind(recase);
@@ -128,6 +129,65 @@ function askForConfig(answers, mainCb) {
         setTimeout(cb, 250);
       });
     }
+  , function askRelay(cb) {
+      if (answers.relay) { cb(); return; }
+      console.info("");
+      console.info("");
+      console.info("What relay will you be using? (press enter for default)");
+      console.info("");
+      function parseUrl(hostname) {
+        var url = require('url');
+        var location = url.parse(hostname);
+        if (!location.protocol || /\./.test(location.protocol)) {
+          hostname = 'https://' + hostname;
+          location = url.parse(hostname);
+        }
+        hostname = location.hostname + (location.port ? ':' + location.port : '');
+        hostname = location.protocol.replace(/https?/, 'https') + '//' + hostname + location.pathname;
+        return hostname;
+      }
+      rl.question('relay [default: telebit.cloud]: ', function (relay) {
+        // TODO parse and check https://{{relay}}/.well-known/telebit.cloud/directives.json
+        if (!relay) { relay = 'telebit.cloud'; }
+        answers.relay = relay.trim();
+        var urlstr = parseUrl(answers.relay) + '_apis/telebit.cloud/index.json';
+        https.get(urlstr, function (resp) {
+          var body = '';
+          if (200 !== resp.statusCode) {
+            console.error("[" + resp.statusCode + " Error] Failed to retrieve '" + urlstr + "'");
+            askRelay(cb);
+            return;
+          }
+          resp.on('data', function (chunk) {
+            body += chunk.toString('utf8');
+          });
+          resp.on('end', function () {
+            try {
+              body = JSON.parse(body);
+            } catch(e) {
+              console.error("[Parse Error] Failed to retrieve '" + urlstr + "'");
+              console.error(e);
+              askRelay(cb);
+              return;
+            }
+            if (!(body.api_host)) {
+              console.error("[API Error] API Index '" + urlstr + "' does not describe a known version of telebit.cloud");
+              console.error(e);
+              askRelay(cb);
+              return;
+            }
+            if (body.pair_request) {
+              answers._can_pair = true;
+            }
+            cb();
+          });
+        }).on('error', function (e) {
+          console.error("[Network Error] Failed to retrieve '" + urlstr + "'");
+          console.error(e);
+          askRelay(cb);
+        });
+      });
+    }
   , function askAgree(cb) {
       if (answers.agree_tos) { cb(); return; }
       console.info("");
@@ -150,21 +210,6 @@ function askForConfig(answers, mainCb) {
         setTimeout(cb, 250);
       });
     }
-  , function askRelay(cb) {
-      if (answers.relay) { cb(); return; }
-      console.info("");
-      console.info("");
-      console.info("What relay will you be using? (press enter for default)");
-      console.info("");
-      rl.question('relay [default: telebit.cloud]: ', function (relay) {
-        // TODO parse and check https://{{relay}}/.well-known/telebit.cloud/directives.json
-        if (!relay) {
-          relay = 'telebit.cloud';
-        }
-        answers.relay = relay.trim();
-        setTimeout(cb, 250);
-      });
-    }
   , function checkRelay(cb) {
 			if (!/\btelebit\.cloud\b/i.test(answers.relay)) {
 				standardSet = standardSet.concat(advancedSet);
@@ -240,7 +285,7 @@ function askForConfig(answers, mainCb) {
   ];
   var advancedSet = [
     function askTokenOrSecret(cb) {
-      if (answers.token || answers.secret) { cb(); return; }
+      if (answers._can_pair || answers.token || answers.secret) { cb(); return; }
       console.info("");
       console.info("");
       console.info("What's your authorization for '" + answers.relay + "'?");