From 99712ec2f01ad4ec2bfc60b252466ff2bb46eec9 Mon Sep 17 00:00:00 2001
From: yflory <yann.flory@xwiki.com>
Date: Tue, 20 Mar 2018 15:09:31 +0100
Subject: [PATCH] getMetadata RPC

---
 rpc.js                          | 27 ++++++++++++++++++++++++---
 www/common/outer/async-store.js | 26 ++++++++++++++++++++------
 2 files changed, 44 insertions(+), 9 deletions(-)

diff --git a/rpc.js b/rpc.js
index 9cdb440f3..6599d66bb 100644
--- a/rpc.js
+++ b/rpc.js
@@ -326,6 +326,24 @@ var getFileSize = function (Env, channel, cb) {
     });
 };
 
+var getMetadata = function (Env, channel, cb) {
+    if (!isValidId(channel)) { return void cb('INVALID_CHAN'); }
+
+    if (channel.length === 32) {
+        if (typeof(Env.msgStore.getChannelMetadata) !== 'function') {
+            return cb('GET_CHANNEL_METADATA_UNSUPPORTED');
+        }
+
+        return void Env.msgStore.getChannelMetadata(channel, function (e, data /*:object*/) {
+            if (e) {
+                if (e.code === 'INVALID_METADATA') { return void cb(void 0, {}); }
+                return void cb(e.code);
+            }
+            cb(void 0, data);
+        });
+    }
+};
+
 var getMultipleFileSize = function (Env, channels, cb) {
     if (!Array.isArray(channels)) { return cb('INVALID_PIN_LIST'); }
     if (typeof(Env.msgStore.getChannelSize) !== 'function') {
@@ -1128,6 +1146,7 @@ var isNewChannel = function (Env, channel, cb) {
 var isUnauthenticatedCall = function (call) {
     return [
         'GET_FILE_SIZE',
+        'GET_METADATA',
         'GET_MULTIPLE_FILE_SIZE',
         'IS_CHANNEL_PINNED',
         'IS_NEW_CHANNEL',
@@ -1248,12 +1267,14 @@ RPC.create = function (
             }
             case 'GET_FILE_SIZE':
                 return void getFileSize(Env, msg[1], function (e, size) {
-                    if (e) {
-                        console.error(e);
-                    }
                     WARN(e, msg[1]);
                     respond(e, [null, size, null]);
                 });
+            case 'GET_METADATA':
+                return void getMetadata(Env, msg[1], function (e, data) {
+                    WARN(e, msg[1]);
+                    respond(e, [null, data, null]);
+                });
             case 'GET_MULTIPLE_FILE_SIZE':
                 return void getMultipleFileSize(Env, msg[1], function (e, dict) {
                     if (e) {
diff --git a/www/common/outer/async-store.js b/www/common/outer/async-store.js
index 6790f2ed1..b7f47a1d1 100644
--- a/www/common/outer/async-store.js
+++ b/www/common/outer/async-store.js
@@ -429,12 +429,26 @@ define([
         toSign.drive = secret.channel;
         toSign.edPublic = store.proxy.edPublic;
         var signKey = Crypto.Nacl.util.decodeBase64(secret.keys.signKey);
-        console.log(Sortify(toSign));
-        var proof = Crypto.Nacl.sign.detached(Crypto.Nacl.util.decodeUTF8(Sortify(toSign)), signKey);
-        var proofTxt = Crypto.Nacl.util.encodeBase64(proof);
-        cb({
-            proof: proofTxt,
-            toSign: JSON.parse(Sortify(toSign))
+        Store.anonRpcMsg({
+            msg: 'GET_METADATA',
+            data: secret.channel
+        }, function (data) {
+            console.log(data[0]);
+            var metadata = data[0];
+            // Owned drive
+            if (metadata && metadata.owners && metadata.owners.length === 1 &&
+                metadata.owners.indexOf(edPublic) !== -1) {
+                
+                return;
+            }
+
+            // Not owned drive
+            var proof = Crypto.Nacl.sign.detached(Crypto.Nacl.util.decodeUTF8(Sortify(toSign)), signKey);
+            var proofTxt = Crypto.Nacl.util.encodeBase64(proof);
+            cb({
+                proof: proofTxt,
+                toSign: JSON.parse(Sortify(toSign))
+            });
         });
     };