feat: support CIDs in /ipns/ content paths

This adds support for PeerIDs as CIDs in /ipns/ paths.
See libp2p/specs#216 for full context.

License: MIT
Signed-off-by: Marcin Rataj <lidel@lidel.org>

src/core/ipns/resolver.js

@@ -4,6 +4,7 @@ const ipns = require('ipns')
 const crypto = require('libp2p-crypto')
 const PeerId = require('peer-id')
 const errcode = require('err-code')
+const CID = require('cids')
 
 const debug = require('debug')
 const log = debug('ipfs:ipns:resolver')
@@ -74,7 +75,7 @@ class IpnsResolver {
 
   // resolve ipns entries from the provided routing
   async _resolveName (name) {
-    const peerId = PeerId.createFromB58String(name)
+    const peerId = PeerId.createFromBytes(new CID(name).multihash) // TODO: change to `PeerId.createFromCID` when https://github.com/libp2p/js-peer-id/pull/105 lands and js-ipfs switched to async peer-id lib
     const { routingKey } = ipns.getIdKeys(peerId.toBytes())
     let record
 

test/core/name.spec.js

@@ -13,6 +13,7 @@ const ipnsRouting = require('../../src/core/ipns/routing/config')
 const OfflineDatastore = require('../../src/core/ipns/routing/offline-datastore')
 const PubsubDatastore = require('../../src/core/ipns/routing/pubsub-datastore')
 const { Key, Errors } = require('interface-datastore')
+const CID = require('cids')
 
 const DaemonFactory = require('ipfsd-ctl')
 const df = DaemonFactory.create({
@@ -372,6 +373,16 @@ describe('name', function () {
 
       expect(value).to.exist()
     })
+
+    it('should resolve an ipns path with PeerID as CIDv1 correctly', async function () {
+      const res = await node.add(fixture)
+      await node.name.publish(`/ipfs/${res[0].hash}`)
+      let peerCid = new CID(nodeId)
+      if (peerCid.version === 0) peerCid = peerCid.toV1() // future-proofing
+      const value = await ipnsPath.resolvePath(node, `/ipns/${peerCid.toString('base32')}`)
+
+      expect(value).to.exist()
+    })
   })
 
   describe('ipns.routing', function () {