issue#5742

1 files changed, 20 insertions, 10 deletions

diff --git a/app/scripts/lib/ens-ipfs/resolver.js b/app/scripts/lib/ens-ipfs/resolver.js
index 18f7704c3..3f0fb00a2 100644
--- a/app/scripts/lib/ens-ipfs/resolver.js
+++ b/app/scripts/lib/ens-ipfs/resolver.js
@@ -1,9 +1,9 @@
 const namehash = require('eth-ens-namehash')
-const multihash = require('multihashes')
 const Eth = require('ethjs-query')
 const EthContract = require('ethjs-contract')
 const registryAbi = require('./contracts/registry')
 const resolverAbi = require('./contracts/resolver')
+const contentHash = require('content-hash')
 
 module.exports = resolveEnsToIpfsContentId
 
@@ -26,16 +26,26 @@ async function resolveEnsToIpfsContentId ({ provider, name }) {
     throw new Error(`EnsIpfsResolver - no resolver found for name "${name}"`)
   }
   const Resolver = contract(resolverAbi).at(resolverAddress)
-  // lookup content id
-  const contentLookupResult = await Resolver.content(hash)
-  const contentHash = contentLookupResult[0]
-  if (hexValueIsEmpty(contentHash)) {
-    throw new Error(`EnsIpfsResolver - no content ID found for name "${name}"`)
+
+  const isEIP1577Compliant = await Resolver.supportsInterface('0xbc1c58d1')
+  const isLegacyResolver = await Resolver.supportsInterface('0xd8389dc5')
+  if (isEIP1577Compliant[0]) {
+    const contentLookupResult = await Resolver.contenthash(hash)
+    const rawContentHash = contentLookupResult[0]
+    const decodedContentHash = contentHash.decode(rawContentHash)
+    const type = contentHash.getCodec(rawContentHash)
+    return {type: type, hash: decodedContentHash}
+  }
+  if (isLegacyResolver[0]) {
+    // lookup content id
+    const contentLookupResult = await Resolver.content(hash)
+    const content = contentLookupResult[0]
+    if (hexValueIsEmpty(content)) {
+      throw new Error(`EnsIpfsResolver - no content ID found for name "${name}"`)
+    }
+    return {type: 'swarm-ns', hash: content.slice(2)}
   }
-  const nonPrefixedHex = contentHash.slice(2)
-  const buffer = multihash.fromHexString(nonPrefixedHex)
-  const contentId = multihash.toB58String(multihash.encode(buffer, 'sha2-256'))
-  return contentId
+  throw new Error(`EnsIpfsResolver - the resolver for name "${name}" is not standard, it should either supports contenthash() or content()`)
 }
 
 function hexValueIsEmpty (value) {