Worked a bit on Webfinger detection, does not work yet.

config.json

@@ -0,0 +1,4 @@
+{
+  "DOMAIN" : "767b16bb.ngrok.io",
+  "PORT" : 3000
+}

index.js

@@ -0,0 +1,18 @@
+const config = require('./config');
+const server = require('./server');
+const express = require('express');
+const app = express();
+const http = require('http');
+
+app.set('domain', config.DOMAIN);
+app.set('port', process.env.PORT || config.PORT || 3000);
+app.set('port-https', process.env.PORT_HTTPS || 8443);
+
+app.get('/', (req, res) => res.send('Hello World!'));
+app.get('/u/:name', server.get_user);
+app.get('/.well-known/webfinger', server.get_webfinger);
+app.get('/inbox', (req, res) => res.send('Here lies the inbox'));
+
+http.createServer(app).listen(app.get('port'), function(){
+    console.log('Express server listening on port ' + app.get('port'));
+});

package.json

@@ -2,9 +2,12 @@
   "name": "scuttlebutt_to_ap",
   "version": "1.0.0",
   "dependencies": {
-    "ssb-client": "latest",
+    "express": "latest",
+    "node-fetch": "latest",
     "pull-stream": "latest",
+    "ssb-client": "latest",
+    "ssb-friends": "latest",
     "stream-to-pull-stream": "latest",
-    "node-fetch": "latest"
+    "http": "latest"
   }
 }

save_to_ssb.js

@@ -266,9 +266,9 @@ async function restore_ssb_message(id){
     return await out;
 }
 
-exports.bridge = {
+module.exports = {
     save : (message) => {
-        if (message.@context === "https://www.w3.org/ns/activitystreams") {
+        if (message["@context"] === "https://www.w3.org/ns/activitystreams") { //todo: should be @context
 
             add_ssb_message(
                 message.type,
@@ -284,9 +284,5 @@ exports.bridge = {
             throw ("Invalid message context.");
         }
     },
-    restore: (id) => {
-        let p = restore_ssb_message(id);
-
-        return p;
-    }
+    restore: restore_ssb_message
 };

server.js

@@ -0,0 +1,122 @@
+const config = require('./config');
+const ssbClient = require('ssb-client');
+const pull = require('pull-stream');
+
+DOMAIN = config.DOMAIN;
+
+async function check_if_in_friends(name){
+    let result = false;
+    let out = new Promise((resolve, reject) => {
+        ssbClient((err, sbot) => {
+            if (err) reject(err);
+
+            pull(
+                sbot.friends.createFriendStream(),
+                pull.collect((err, array) => {
+                    array.forEach(function (actor) {
+                        let short_actor = (actor.substr(1));
+                        if (short_actor === name) {
+                            result = true;
+                        }
+                    });
+                    sbot.close();
+                    resolve(result);
+                })
+            );
+        });
+    });
+    return await out;
+}
+
+function get_webfinger(req, res) {
+    let resource = req.query.resource;
+    if (!resource || !resource.includes('acct:')) {
+        return res.status(400).send('Bad request. Please make sure "acct:USER@DOMAIN" is what you are sending as the "resource" query parameter.');
+    }
+    else {
+        let name = resource.replace('acct:','');
+        name = name.substr(0,name.indexOf('@'));
+
+        // This might help with webfinger detection
+        // let encoded_name = encodeURIComponent(name);
+
+        let p = check_if_in_friends(name);
+
+        p.then((result) => {
+            if (result) {
+                res.json(
+                    {
+                        'subject': `acct:${name}@${DOMAIN}`,
+                        links: [
+                            {
+                                rel: 'self',
+                                type: 'application/activitypub+json',
+                                href: `https://${DOMAIN}/u/${name}`
+                            }
+                        ],
+                    }
+                );
+            } else {
+                return res.status(404).send(`No record found for ${name}.`);
+            }
+        }).catch((err) => {
+            return res.status(500).send(`An error occured: ${err}.`);
+        })
+    }
+}
+
+function get_user(req, res){
+    let name = req.params.name;
+    if (!name) {
+        return res.status(400).send('Bad request.');
+    }
+    else {
+
+        // This might help with webfinger detection
+        // let encoded_name = encodeURIComponent(name);
+
+        let p = check_if_in_friends(name);
+
+        p.then((result) => {
+            if (result) {
+
+                res.json(
+                    {
+                        '@context': [
+                            'https://www.w3.org/ns/activitystreams',
+                            'https://w3id.org/security/v1'
+                        ],
+
+                        id: `https://${DOMAIN}/u/${name}`,
+                        type: 'Person',
+                        preferredUsername: 'TESTPERSON PLS CHANGE', //todo: read from latest about message
+                        inbox: `https://${DOMAIN}/u/${name}/inbox`,
+
+                        publicKey: {
+                            id: `https://${DOMAIN}/u/${name}#main-key`,
+                            owner: `https://${DOMAIN}/u/${name}`,
+                            publicKeyPem: '-----BEGIN PUBLIC KEY-----\n' +
+                                'MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAsT4MEtffaV0uFr9jgSnx\n' +
+                                'kb1+MMd1/jGYBugJ4jkHc9rvQRJLA2C8O2LbrdNb/00TRHh0pkR7AJW7DWMhIF/P\n' +
+                                'WmsHcdouAUhovAVO+4yrRK5fMA96JP6k2YwqJK+yjK4SMm9iwvcdBlrkZif0KWvA\n' +
+                                'Qf4eU24n64NSEdVu48cgZwMvQeYKaAtf2LIhXYOE4pA16C05z3BAar+9m2e1yZMG\n' +
+                                '+JzhoywmpqlrB+XK55wjAIhvwVGgOMtUg5FbHU5sH7wZv7H945t40x7HjNCBxU6d\n' +
+                                'yrF7Bl6nMg+ifT5a6SzPSJ0f3g99AyfMVL5fnhSodjpsnjohfIsx9Vzd4oO1JhDx\n' +
+                                'SwIDAQAB\n' +
+                                '-----END PUBLIC KEY-----'
+                        }
+                    }
+                );
+            }else {
+                return res.status(404).send(`No record found for ${name}.`);
+            }
+        }).catch((err) => {
+            return res.status(500).send(`An error occured: ${err}.`);
+        })
+    }
+}
+
+module.exports = {
+    get_user,
+    get_webfinger
+};