lnurl channel flow

7 files changed, 173 insertions, 9 deletions

diff --git a/index.js b/index.js
index 8372f49b..ea9bf2f3 100644
--- a/index.js
+++ b/index.js
@@ -3,6 +3,7 @@ const compression = require("compression");
 const cookieParser = require("cookie-parser");
 const cors = require("cors");
 const express = require("express");
+const lnurl = require('lnurl');
 
 l = require("pino")();
 config = require("./config");
@@ -33,9 +34,9 @@ require("./lib/rates");
 require("./lib/notifications");
 
 require("./routes/assets");
-require("./routes/info");
 require("./routes/invoices");
 require("./routes/payments");
+require("./routes/info");
 require("./routes/users");
 
 app.use((err, req, res, next) => {
@@ -57,3 +58,6 @@ app.use((err, req, res, next) => {
 server.listen(config.port, () =>
   console.log(`CoinOS Server listening on port ${config.port}`)
 );
+
+lnurlServer = lnurl.createServer(config.lnurl);
+
diff --git a/package.json b/package.json
index d982b218..34493ea8 100644
--- a/package.json
+++ b/package.json
@@ -27,6 +27,7 @@
     "grpc": "^1.24.2",
     "http-proxy-middleware": "^0.20.0",
     "jsonwebtoken": "^8.5.1",
+    "lnurl": "^0.7.0",
     "long": "^4.0.0",
     "mailgun-js": "^0.22.0",
     "mysql2": "^2.1.0",
diff --git a/routes/lightning/channel.js b/routes/lightning/channel.js
new file mode 100644
index 00000000..c5ab6a02
--- /dev/null
+++ b/routes/lightning/channel.js
@@ -0,0 +1,39 @@
+const axios = require("axios");
+
+module.exports = async (req, res) => {
+  const { params } = req.body;
+  const [pubkey, host] = params.uri.split("@");
+
+  l.info("connecting to peer", req.user.username, pubkey, host);
+  let result;
+  try {
+    result = await lna.connectPeer({
+      addr: { pubkey, host },
+      perm: true
+    });
+  } catch (e) {
+    if (!e.message.includes('already connected')) {
+      l.error("problem connecting to peer", e.message);
+      return res.status(500).send(e.message);
+    }
+  }
+
+  const { callback, k1 } = params;
+  let remoteid;
+  try {
+    remoteid = (await lna.getInfo({})).identity_pubkey;
+  } catch(e) {
+    l.error("problem getting lightning node info", e.message);
+    return res.status(500).send(e.message);
+  } 
+
+  let url = `${callback}?k1=${k1}&remoteid=${remoteid}&private=0`;
+
+  try {
+    let response = await axios.get(url);
+    res.send(response.data);
+  } catch(e) {
+    l.error("problem sending channel request", e.message);
+    return res.status(500).send({ status: "ERROR", reason: e.message });
+  } 
+};
diff --git a/routes/lightning/channelRequest.js b/routes/lightning/channelRequest.js
new file mode 100644
index 00000000..9ba74009
--- /dev/null
+++ b/routes/lightning/channelRequest.js
@@ -0,0 +1,20 @@
+module.exports = async (req, res) => {
+  let { localAmt, pushAmt } = req.body;
+
+  pushAmt = 0;
+
+  try {
+    if (localAmt < 20000) throw new Error("amount must be greater than 20000 SAT");
+    if (localAmt > 1000000) throw new Error("amount must be <= 1000000");
+
+    const result = await lnurlServer.generateNewUrl("channelRequest", {
+      localAmt,
+      pushAmt
+    });
+
+    res.send(result);
+  } catch (e) {
+    l.error("problem generating channel request", e.message);
+    res.status(500).send(e.message);
+  }
+};
diff --git a/routes/lightning/decode.js b/routes/lightning/decode.js
new file mode 100644
index 00000000..b7dba120
--- /dev/null
+++ b/routes/lightning/decode.js
@@ -0,0 +1,15 @@
+const axios = require('axios');
+const lnurl = require('lnurl');
+
+module.exports = async (req, res) => {
+  let { text } = req.query;
+  const decoded = lnurl.decode(text);
+
+  try {
+    let result = await axios.get(decoded);
+    res.send(result.data);
+  } catch(e) {
+    l.error(e.message);
+    res.status(500).send(e.message);
+  } 
+};
diff --git a/routes/payments.js b/routes/payments.js
index 8f731f78..1840c381 100644
--- a/routes/payments.js
+++ b/routes/payments.js
@@ -34,6 +34,9 @@ const { join } = require("path");
       lnb = lnd(config.lnb);
     }
 
+    app.get("/lightning/decode", require("./lightning/decode"));
+    app.post("/lightning/channel", auth, require("./lightning/channel"));
+    app.post("/lightning/channelRequest", auth, require("./lightning/channelRequest"));
     app.post("/lightning/invoice", auth, require("./lightning/invoice"));
     app.post("/lightning/query", auth, require("./lightning/query"));
     app.post("/lightning/send", auth, require("./lightning/send"));
diff --git a/yarn.lock b/yarn.lock
index 34ad1fce..49ac142d 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -472,6 +472,11 @@ [email protected]:
   resolved "https://registry.yarnpkg.com/async/-/async-1.5.2.tgz#ec6a61ae56480c0c3cb241c95618e20892f9672a"
   integrity sha1-7GphrlZIDAw8skHJVhjiCJL5Zyo=
 
[email protected], async@~3.2.0:
+  version "3.2.0"
+  resolved "https://registry.yarnpkg.com/async/-/async-3.2.0.tgz#b3a2685c5ebb641d3de02d161002c60fc9f85720"
+  integrity sha512-TR2mEZFVOj2pLStYxLht7TyfuRzaydfpxr3k9RpHIzMgw7A64dzsdqCxH1WJyQdoe8T10nDXd9wnEigmiuHIZw==
+
 async@^2.6.1, async@^2.6.3, async@~2.6.1:
   version "2.6.3"
   resolved "https://registry.yarnpkg.com/async/-/async-2.6.3.tgz#d72625e2344a3656e3a3ad4fa749fa83299d82ff"
@@ -479,11 +484,6 @@ async@^2.6.1, async@^2.6.3, async@~2.6.1:
   dependencies:
     lodash "^4.17.14"
 
-async@~3.2.0:
-  version "3.2.0"
-  resolved "https://registry.yarnpkg.com/async/-/async-3.2.0.tgz#b3a2685c5ebb641d3de02d161002c60fc9f85720"
-  integrity sha512-TR2mEZFVOj2pLStYxLht7TyfuRzaydfpxr3k9RpHIzMgw7A64dzsdqCxH1WJyQdoe8T10nDXd9wnEigmiuHIZw==
-
 asynckit@^0.4.0:
   version "0.4.0"
   resolved "https://registry.yarnpkg.com/asynckit/-/asynckit-0.4.0.tgz#c79ed97f7f34cb8f2ba1bc9790bcc366474b4b79"
@@ -543,6 +543,11 @@ bcrypt@^3.0.6:
     nan "2.14.0"
     node-pre-gyp "0.14.0"
 
[email protected]:
+  version "1.1.3"
+  resolved "https://registry.yarnpkg.com/bech32/-/bech32-1.1.3.tgz#bd47a8986bbb3eec34a56a097a84b8d3e9a2dfcd"
+  integrity sha512-yuVFUvrNcoJi0sv5phmqc6P+Fl1HjRDRNOOkHY2X/3LBy2bIGNSFx4fZ95HMaXHupuS7cZR15AsvtmCIF4UEyg==
+
 bech32@^1.1.2:
   version "1.1.4"
   resolved "https://registry.yarnpkg.com/bech32/-/bech32-1.1.4.tgz#e38c9f37bf179b8eb16ae3a772b40c356d4832e9"
@@ -553,6 +558,11 @@ bigi@^1.1.0, bigi@^1.4.0:
   resolved "https://registry.yarnpkg.com/bigi/-/bigi-1.4.2.tgz#9c665a95f88b8b08fc05cfd731f561859d725825"
   integrity sha1-nGZalfiLiwj8Bc/XMfVhhZ1yWCU=
 
[email protected]:
+  version "9.0.0"
+  resolved "https://registry.yarnpkg.com/bignumber.js/-/bignumber.js-9.0.0.tgz#805880f84a329b5eac6e7cb6f8274b6d82bdf075"
+  integrity sha512-t/OYhhJ2SD+YGBQcjY8GzzDHEk9f3nerxjtfa6tlMXfe7frs/WozhvCNoGvpM0P3bNf3Gq5ZRMlGr5f3r4/N8A==
+
 bignumber.js@^4.0.0:
   version "4.1.0"
   resolved "https://registry.yarnpkg.com/bignumber.js/-/bignumber.js-4.1.0.tgz#db6f14067c140bd46624815a7916c92d9b6c24b1"
@@ -694,7 +704,7 @@ [email protected], body-parser@^1.19.0:
     raw-body "2.4.0"
     type-is "~1.6.17"
 
-bolt11@^1.2.5:
[email protected], bolt11@^1.2.5:
   version "1.2.7"
   resolved "https://registry.yarnpkg.com/bolt11/-/bolt11-1.2.7.tgz#75852e215aeb28d6ccd6dd7c721c09d8ccb40a88"
   integrity sha512-og00WBenEDUeMOVLoiWIiA0i14+tslzqhk/fJIYt5L7GWFFvY88kl0J1ib5DqMXp7mQKez4E8/XI6nrG0Rek4g==
@@ -898,6 +908,11 @@ [email protected], chalk@^3.0.0, chalk@~3.0.0:
     ansi-styles "^4.1.0"
     supports-color "^7.1.0"
 
+charenc@~0.0.1:
+  version "0.0.2"
+  resolved "https://registry.yarnpkg.com/charenc/-/charenc-0.0.2.tgz#c0a1d2f3a7092e03774bfa83f14c0fc5790a8667"
+  integrity sha1-wKHS86cJLgN3S/qD8UwPxXkKhmc=
+
 charm@~0.1.1:
   version "0.1.2"
   resolved "https://registry.yarnpkg.com/charm/-/charm-0.1.2.tgz#06c21eed1a1b06aeb67553cdc53e23274bac2296"
@@ -1068,6 +1083,11 @@ [email protected]:
   resolved "https://registry.yarnpkg.com/commander/-/commander-2.15.1.tgz#df46e867d0fc2aec66a34662b406a9ccafff5b0f"
   integrity sha512-VlfT9F3V0v+jr4yxPc5gg9s62/fIVWsd2Bk2iD435um1NlGMYdVCq+MjcXnhYq2icNOizHr1kK+5TI6H0Hy0ag==
 
[email protected]:
+  version "5.1.0"
+  resolved "https://registry.yarnpkg.com/commander/-/commander-5.1.0.tgz#46abbd1652f8e059bddaef99bbdcb2ad9cf179ae"
+  integrity sha512-P0CysNDQ7rtVw4QIQtm+MRxV66vKFSvlsQvGYXZWR3qFU0jlMKHZZZgw8e+8DSah4UDKMqnknRDQz+xuQXQ/Zg==
+
 compressible@~2.0.16:
   version "2.0.18"
   resolved "https://registry.yarnpkg.com/compressible/-/compressible-2.0.18.tgz#af53cca6b070d4c3c0750fbd77286a6d7cc46fba"
@@ -1199,6 +1219,11 @@ [email protected]:
   dependencies:
     moment-timezone "^0.5.x"
 
+crypt@~0.0.1:
+  version "0.0.2"
+  resolved "https://registry.yarnpkg.com/crypt/-/crypt-0.0.2.tgz#88d7ff7ec0dfb86f713dc87bbb42d044d3e6c41b"
+  integrity sha1-iNf/fsDfuG9xPch7u0LQRNPmxBs=
+
 crypto-random-string@^2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/crypto-random-string/-/crypto-random-string-2.0.0.tgz#ef2a7a966ec11083388369baa02ebead229b30d5"
@@ -1532,6 +1557,11 @@ es6-promisify@^5.0.0:
   dependencies:
     es6-promise "^4.0.3"
 
+es6-promisify@^6.0.0:
+  version "6.1.1"
+  resolved "https://registry.yarnpkg.com/es6-promisify/-/es6-promisify-6.1.1.tgz#46837651b7b06bf6fff893d03f29393668d01621"
+  integrity sha512-HBL8I3mIki5C1Cc9QjKUenHtnG0A5/xA8Q/AllRcfiwl2CZFXGK7ddBiCoRwAix4i2KxcQfjtIVcrVbB3vbmwg==
+
 escape-goat@^2.0.0:
   version "2.1.1"
   resolved "https://registry.yarnpkg.com/escape-goat/-/escape-goat-2.1.1.tgz#1b2dc77003676c457ec760b2dc68edb648188675"
@@ -2258,6 +2288,11 @@ is-bluebird@^1.0.2:
   resolved "https://registry.yarnpkg.com/is-bluebird/-/is-bluebird-1.0.2.tgz#096439060f4aa411abee19143a84d6a55346d6e2"
   integrity sha1-CWQ5Bg9KpBGr7hkUOoTWpVNG1uI=
 
+is-buffer@~1.1.1:
+  version "1.1.6"
+  resolved "https://registry.yarnpkg.com/is-buffer/-/is-buffer-1.1.6.tgz#efaa2ea9daa0d7ab2ea13a97b2b8ad51fefbe8be"
+  integrity sha512-NcdALwpXkTm5Zvvbk7owOUSvVvBKDgKP5/ewfXEznmQFfs4ZRmanOeKBTjRVjka3QFoN6XJ+9F3USqfHqTaU5w==
+
 is-buffer@~2.0.3:
   version "2.0.4"
   resolved "https://registry.yarnpkg.com/is-buffer/-/is-buffer-2.0.4.tgz#3e572f23c8411a5cfd9557c849e3665e0b290623"
@@ -2540,6 +2575,22 @@ levn@~0.3.0:
     prelude-ls "~1.1.2"
     type-check "~0.3.2"
 
+lnurl@^0.7.0:
+  version "0.7.0"
+  resolved "https://registry.yarnpkg.com/lnurl/-/lnurl-0.7.0.tgz#3f3dfb9f53975bf83e3e7d47c7d54313139bec71"
+  integrity sha512-GZdULXt+p8us9rx4mgt4HvtFfdq6lyaXypq3i9cJ39Pweg8NbxQyxYTwQiZ0pSHPI7cglMvBiXra4hIOApTD9A==
+  dependencies:
+    async "3.2.0"
+    bech32 "1.1.3"
+    bignumber.js "9.0.0"
+    bolt11 "1.2.7"
+    commander "5.1.0"
+    debug "4.1.1"
+    express "4.17.1"
+    pem "1.14.4"
+    secp256k1 "3.8.0"
+    underscore "1.10.2"
+
 locate-path@^3.0.0:
   version "3.0.0"
   resolved "https://registry.yarnpkg.com/locate-path/-/locate-path-3.0.0.tgz#dbec3b3ab759758071b58fe59fc41871af21400e"
@@ -2676,6 +2727,15 @@ md5.js@^1.3.4:
     inherits "^2.0.1"
     safe-buffer "^5.1.2"
 
+md5@^2.2.1:
+  version "2.2.1"
+  resolved "https://registry.yarnpkg.com/md5/-/md5-2.2.1.tgz#53ab38d5fe3c8891ba465329ea23fac0540126f9"
+  integrity sha1-U6s41f48iJG6RlMp6iP6wFQBJvk=
+  dependencies:
+    charenc "~0.0.1"
+    crypt "~0.0.1"
+    is-buffer "~1.1.1"
+
 [email protected]:
   version "0.3.0"
   resolved "https://registry.yarnpkg.com/media-typer/-/media-typer-0.3.0.tgz#8710d7af0aa626f8fffa1ce00168545263255748"
@@ -3159,7 +3219,7 @@ os-locale@^1.4.0:
   dependencies:
     lcid "^1.0.0"
 
-os-tmpdir@^1.0.0:
+os-tmpdir@^1.0.0, os-tmpdir@^1.0.1:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/os-tmpdir/-/os-tmpdir-1.0.2.tgz#bbe67406c79aa85c5cfec766fe5734555dfa1274"
   integrity sha1-u+Z0BseaqFxc/sdm/lc0VV36EnQ=
@@ -3305,6 +3365,16 @@ [email protected]:
   resolved "https://registry.yarnpkg.com/pause/-/pause-0.0.1.tgz#1d408b3fdb76923b9543d96fb4c9dfd535d9cb5d"
   integrity sha1-HUCLP9t2kjuVQ9lvtMnf1TXZy10=
 
[email protected]:
+  version "1.14.4"
+  resolved "https://registry.yarnpkg.com/pem/-/pem-1.14.4.tgz#a68c70c6e751ccc5b3b5bcd7af78b0aec1177ff9"
+  integrity sha512-v8lH3NpirgiEmbOqhx0vwQTxwi0ExsiWBGYh0jYNq7K6mQuO4gI6UEFlr6fLAdv9TPXRt6GqiwE37puQdIDS8g==
+  dependencies:
+    es6-promisify "^6.0.0"
+    md5 "^2.2.1"
+    os-tmpdir "^1.0.1"
+    which "^2.0.2"
+
 performance-now@^2.1.0:
   version "2.1.0"
   resolved "https://registry.yarnpkg.com/performance-now/-/performance-now-2.1.0.tgz#6309f4e0e5fa913ec1c69307ae364b4b377c9e7b"
@@ -3874,7 +3944,7 @@ sax@^1.2.4:
   resolved "https://registry.yarnpkg.com/sax/-/sax-1.2.4.tgz#2816234e2378bddc4e5354fab5caa895df7100d9"
   integrity sha512-NqVDv9TpANUjFm0N8uM5GxL36UgKi9/atZw+x7YFnQ8ckwFGKrl4xX4yWtrey3UJm5nP1kUbnYgLopqWNSRhWw==
 
-secp256k1@^3.4.0:
[email protected], secp256k1@^3.4.0:
   version "3.8.0"
   resolved "https://registry.yarnpkg.com/secp256k1/-/secp256k1-3.8.0.tgz#28f59f4b01dbee9575f56a47034b7d2e3b3b352d"
   integrity sha512-k5ke5avRZbtl9Tqx/SA7CbY3NF6Ro+Sj9cZxezFzuBlLDmyqPiL8hJJ+EmzD8Ig4LUDByHJ3/iPOVoRixs/hmw==
@@ -4440,6 +4510,11 @@ undefsafe@^2.0.2:
   dependencies:
     debug "^2.2.0"
 
[email protected]:
+  version "1.10.2"
+  resolved "https://registry.yarnpkg.com/underscore/-/underscore-1.10.2.tgz#73d6aa3668f3188e4adb0f1943bd12cfd7efaaaf"
+  integrity sha512-N4P+Q/BuyuEKFJ43B9gYuOj4TQUHXX+j2FqguVOpjkssLUUrnJofCcBccJSCoeturDoZU6GorDTHSvUDlSQbTg==
+
 unique-string@^2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/unique-string/-/unique-string-2.0.0.tgz#39c6451f81afb2749de2b233e3f7c5e8843bd89d"
@@ -4567,6 +4642,13 @@ [email protected]:
   dependencies:
     isexe "^2.0.0"
 
+which@^2.0.2:
+  version "2.0.2"
+  resolved "https://registry.yarnpkg.com/which/-/which-2.0.2.tgz#7c6a8dd0a636a0327e10b59c9286eee93f3f51b1"
+  integrity sha512-BLI3Tl1TW3Pvl70l3yq3Y64i+awpwXqsGBYWkkqMtnbXgrMD+yj7rhW0kuEDxzJaYXGjEW5ogapKNMEKNMjibA==
+  dependencies:
+    isexe "^2.0.0"
+
 [email protected], wide-align@^1.1.0:
   version "1.1.3"
   resolved "https://registry.yarnpkg.com/wide-align/-/wide-align-1.1.3.tgz#ae074e6bdc0c14a431e804e624549c633b000457"