From 724a29ee803030ecc18363b4f391747aeca32917 Mon Sep 17 00:00:00 2001
From: Sebastian Gerske <sebastian.gerske@gmail.com>
Date: Tue, 18 Dec 2018 15:50:37 +0100
Subject: [PATCH] add detection for meta mask

---
 src/ocean/ServiceAgreements/ServiceAgreement.ts | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/src/ocean/ServiceAgreements/ServiceAgreement.ts b/src/ocean/ServiceAgreements/ServiceAgreement.ts
index bf64454..59e7ed9 100644
--- a/src/ocean/ServiceAgreements/ServiceAgreement.ts
+++ b/src/ocean/ServiceAgreements/ServiceAgreement.ts
@@ -86,8 +86,14 @@ export default class ServiceAgreement extends OceanBase {
             valueHashes,
             timeoutValues)
 
-        const serviceAgreementHashSignature = await Web3Provider
-            .getWeb3().eth.sign(serviceAgreementHash, consumer.getId())
+        let serviceAgreementHashSignature: string
+        const web3 = Web3Provider.getWeb3()
+        if (web3.currentProvider.isMetaMask) {
+            // password is injected by metamask, dont try to set it!
+            serviceAgreementHashSignature = await web3.eth.personal.sign(serviceAgreementHash, consumer.getId(), null)
+        } else {
+            serviceAgreementHashSignature = await web3.eth.sign(serviceAgreementHash, consumer.getId())
+        }
 
         return serviceAgreementHashSignature
     }