Update multicodec-topology.d.ts

BREAKING CHANGE:
`signMessages` and `strictSigning` pubsub configuration options replaced
with a `globalSignaturePolicy` option

CHANGELOG.md

@@ -1,3 +1,53 @@
+<a name="0.7.2"></a>
+## [0.7.2](https://github.com/libp2p/js-interfaces/compare/v0.7.1...v0.7.2) (2020-11-11)
+
+
+
+<a name="0.7.1"></a>
+## [0.7.1](https://github.com/libp2p/js-interfaces/compare/v0.7.0...v0.7.1) (2020-11-03)
+
+
+### Bug Fixes
+
+* typescript types ([#69](https://github.com/libp2p/js-interfaces/issues/69)) ([269a6f5](https://github.com/libp2p/js-interfaces/commit/269a6f5))
+
+
+
+<a name="0.7.0"></a>
+# [0.7.0](https://github.com/libp2p/js-interfaces/compare/v0.5.2...v0.7.0) (2020-11-03)
+
+
+### Features
+
+* pubsub: add global signature policy ([#66](https://github.com/libp2p/js-interfaces/issues/66)) ([946b046](https://github.com/libp2p/js-interfaces/commit/946b046))
+* update pubsub getMsgId return type to Uint8Array ([#65](https://github.com/libp2p/js-interfaces/issues/65)) ([e148443](https://github.com/libp2p/js-interfaces/commit/e148443))
+
+
+### BREAKING CHANGES
+
+* `signMessages` and `strictSigning` pubsub configuration options replaced
+with a `globalSignaturePolicy` option
+* new getMsgId return type is not backwards compatible with prior `string`
+return type.
+
+
+
+<a name="0.6.0"></a>
+# [0.6.0](https://github.com/libp2p/js-interfaces/compare/v0.5.2...v0.6.0) (2020-10-05)
+
+
+### Features
+
+* update pubsub getMsgId return type to Uint8Array ([#65](https://github.com/libp2p/js-interfaces/issues/65)) ([e148443](https://github.com/libp2p/js-interfaces/commit/e148443))
+
+
+### BREAKING CHANGES
+
+* new getMsgId return type is not backwards compatible with prior `string`
+return type.
+
+
+
 <a name="0.5.2"></a>
 ## [0.5.2](https://github.com/libp2p/js-interfaces/compare/v0.3.1...v0.5.2) (2020-09-30)
 

README.md

@@ -18,6 +18,7 @@
 - [Crypto](./src/crypto)
 - [Peer Discovery](./src/peer-discovery)
 - [Peer Routing](./src/peer-routing)
+- [Pubsub](./src/pubsub)
 - [Record](./src/record)
 - [Stream Muxer](./src/stream-muxer)
 - [Topology](./src/topology)
@@ -30,6 +31,7 @@ For posterity, here are links to the original repositories for each of the inter
 - [Content Routing](https://github.com/libp2p/interface-content-routing)
 - [Peer Discovery](https://github.com/libp2p/interface-peer-discovery)
 - [Peer Routing](https://github.com/libp2p/interface-peer-routing)
+- [Pubsub](https://github.com/libp2p/js-libp2p-pubsub)
 - [Stream Muxer](https://github.com/libp2p/interface-stream-muxer)
 - [Transport](https://github.com/libp2p/interface-transport)
 

package.json

@@ -1,6 +1,6 @@
 {
   "name": "libp2p-interfaces",
-  "version": "0.5.2",
+  "version": "0.7.2",
   "description": "Interfaces for JS Libp2p",
   "leadMaintainer": "Jacob Heun <jacobheun@gmail.com>",
   "main": "src/index.js",
@@ -56,6 +56,7 @@
     "libp2p-tcp": "^0.15.0",
     "multiaddr": "^8.0.0",
     "multibase": "^3.0.0",
+    "multihashes": "^3.0.1",
     "p-defer": "^3.0.0",
     "p-limit": "^2.3.0",
     "p-wait-for": "^3.1.0",

src/pubsub/README.md

@@ -11,6 +11,9 @@ Table of Contents
     * [Extend interface](#extend-interface)
     * [Example](#example)
 * [API](#api)
+    * [Constructor](#constructor)
+      * [new Pubsub(options)](#new-pubsuboptions)
+          * [Parameters](#parameters)
     * [Start](#start)
       * [pubsub.start()](#pubsubstart)
           * [Returns](#returns)
@@ -19,24 +22,24 @@ Table of Contents
           * [Returns](#returns-1)
     * [Publish](#publish)
       * [pubsub.publish(topics, message)](#pubsubpublishtopics-message)
-          * [Parameters](#parameters)
+          * [Parameters](#parameters-1)
           * [Returns](#returns-2)
     * [Subscribe](#subscribe)
       * [pubsub.subscribe(topic)](#pubsubsubscribetopic)
-          * [Parameters](#parameters-1)
+          * [Parameters](#parameters-2)
     * [Unsubscribe](#unsubscribe)
       * [pubsub.unsubscribe(topic)](#pubsubunsubscribetopic)
-          * [Parameters](#parameters-2)
+          * [Parameters](#parameters-3)
     * [Get Topics](#get-topics)
       * [pubsub.getTopics()](#pubsubgettopics)
           * [Returns](#returns-3)
     * [Get Peers Subscribed to a topic](#get-peers-subscribed-to-a-topic)
       * [pubsub.getSubscribers(topic)](#pubsubgetsubscriberstopic)
-          * [Parameters](#parameters-3)
+          * [Parameters](#parameters-4)
           * [Returns](#returns-4)
     * [Validate](#validate)
       * [pubsub.validate(message)](#pubsubvalidatemessage)
-          * [Parameters](#parameters-4)
+          * [Parameters](#parameters-5)
       * [Returns](#returns-5)
 * [Test suite usage](#test-suite-usage)
 
@@ -49,7 +52,7 @@ You can check the following implementations as examples for building your own pu
 
 ## Interface usage
 
-`interface-pubsub` abstracts the implementation protocol registration within `libp2p` and takes care of all the protocol connections and streams, as well as the subscription management. This way, a pubsub implementation can focus on its message routing algorithm, instead of also needing to create the setup for it.
+`interface-pubsub` abstracts the implementation protocol registration within `libp2p` and takes care of all the protocol connections and streams, as well as the subscription management and the features describe in the libp2p [pubsub specs](https://github.com/libp2p/specs/tree/master/pubsub). This way, a pubsub implementation can focus on its message routing algorithm, instead of also needing to create the setup for it.
 
 ### Extend interface
 
@@ -74,7 +77,7 @@ All the remaining functions **MUST NOT** be overwritten.
 The following example aims to show how to create your pubsub implementation extending this base protocol. The pubsub implementation will handle the subscriptions logic.
 
 ```JavaScript
-const Pubsub = require('libp2p-pubsub')
+const Pubsub = require('libp2p-interfaces/src/pubsub')
 
 class PubsubImplementation extends Pubsub {
   constructor({ libp2p, options })
@@ -82,8 +85,7 @@ class PubsubImplementation extends Pubsub {
       debugName: 'libp2p:pubsub',
       multicodecs: '/pubsub-implementation/1.0.0',
       libp2p,
-      signMessages: options.signMessages,
-      strictSigning: options.strictSigning
+      globalSigningPolicy: options.globalSigningPolicy
     })
   }
 
@@ -98,6 +100,23 @@ class PubsubImplementation extends Pubsub {
 
 The interface aims to specify a common interface that all pubsub router implementation should follow. A pubsub router implementation should extend the [EventEmitter](https://nodejs.org/api/events.html#events_class_eventemitter). When peers receive pubsub messages, these messages will be emitted by the event emitter where the `eventName` will be the `topic` associated with the message.
 
+### Constructor
+
+The base class constructor configures the pubsub instance for use with a libp2p instance. It includes settings for logging, signature policies, etc.
+
+#### `new Pubsub({options})`
+
+##### Parameters
+
+| Name | Type | Description | Default |
+|------|------|-------------|---------|
+| options.libp2p | `Libp2p` | libp2p instance | required, no default |
+| options.debugName | `string` | log namespace | required, no default |
+| options.multicodecs | `string \| Array<string>` | protocol identifier(s) | required, no default |
+| options.globalSignaturePolicy | `'StrictSign' \| 'StrictNoSign'` | signature policy to be globally applied | `'StrictSign'` |
+| options.canRelayMessage | `boolean` | if can relay messages if not subscribed | `false` |
+| options.emitSelf | `boolean` | if `publish` should emit to self, if subscribed | `false` |
+
 ### Start
 
 Starts the pubsub subsystem. The protocol will be registered to `libp2p`, which will result in pubsub being notified when peers who support the protocol connect/disconnect to `libp2p`.
@@ -185,7 +204,7 @@ Get a list of the [PeerId](https://github.com/libp2p/js-peer-id) strings that ar
 
 ### Validate
 
-Validates the signature of a message.
+Validates a message according to the signature policy and topic-specific validation function.
 
 #### `pubsub.validate(message)`
 

src/pubsub/errors.d.ts

@@ -1,4 +1,11 @@
 export namespace codes {
+    export const ERR_INVALID_SIGNATURE_POLICY: string;
+    export const ERR_UNHANDLED_SIGNATURE_POLICY: string;
     export const ERR_MISSING_SIGNATURE: string;
+    export const ERR_MISSING_SEQNO: string;
     export const ERR_INVALID_SIGNATURE: string;
+    export const ERR_UNEXPECTED_FROM: string;
+    export const ERR_UNEXPECTED_SIGNATURE: string;
+    export const ERR_UNEXPECTED_KEY: string;
+    export const ERR_UNEXPECTED_SEQNO: string;
 }

src/pubsub/errors.js

@@ -1,6 +1,46 @@
 'use strict'
 
 exports.codes = {
+  /**
+   * Signature policy is invalid
+   */
+  ERR_INVALID_SIGNATURE_POLICY: 'ERR_INVALID_SIGNATURE_POLICY',
+  /**
+   * Signature policy is unhandled
+   */
+  ERR_UNHANDLED_SIGNATURE_POLICY: 'ERR_UNHANDLED_SIGNATURE_POLICY',
+
+  // Strict signing codes
+
+  /**
+   * Message expected to have a `signature`, but doesn't
+   */
   ERR_MISSING_SIGNATURE: 'ERR_MISSING_SIGNATURE',
-  ERR_INVALID_SIGNATURE: 'ERR_INVALID_SIGNATURE'
+  /**
+   * Message expected to have a `seqno`, but doesn't
+   */
+  ERR_MISSING_SEQNO: 'ERR_MISSING_SEQNO',
+  /**
+   * Message `signature` is invalid
+   */
+  ERR_INVALID_SIGNATURE: 'ERR_INVALID_SIGNATURE',
+
+  // Strict no-signing codes
+
+  /**
+   * Message expected to not have a `from`, but does
+   */
+  ERR_UNEXPECTED_FROM: 'ERR_UNEXPECTED_FROM',
+  /**
+   * Message expected to not have a `signature`, but does
+   */
+  ERR_UNEXPECTED_SIGNATURE: 'ERR_UNEXPECTED_SIGNATURE',
+  /**
+   * Message expected to not have a `key`, but does
+   */
+  ERR_UNEXPECTED_KEY: 'ERR_UNEXPECTED_KEY',
+  /**
+   * Message expected to not have a `seqno`, but does
+   */
+  ERR_UNEXPECTED_SEQNO: 'ERR_UNEXPECTED_SEQNO'
 }

src/pubsub/index.d.ts

@@ -22,18 +22,16 @@ declare class PubsubBaseProtocol {
      * @param {String} props.debugName log namespace
      * @param {Array<string>|string} props.multicodecs protocol identificers to connect
      * @param {Libp2p} props.libp2p
-     * @param {boolean} [props.signMessages = true] if messages should be signed
-     * @param {boolean} [props.strictSigning = true] if message signing should be required
+     * @param {SignaturePolicy} [props.globalSignaturePolicy = SignaturePolicy.StrictSign] defines how signatures should be handled
      * @param {boolean} [props.canRelayMessage = false] if can relay messages not subscribed
      * @param {boolean} [props.emitSelf = false] if publish should emit to self, if subscribed
      * @abstract
      */
-    constructor({ debugName, multicodecs, libp2p, signMessages, strictSigning, canRelayMessage, emitSelf }: {
+    constructor({ debugName, multicodecs, libp2p, globalSignaturePolicy, canRelayMessage, emitSelf }: {
         debugName: string;
         multicodecs: string | string[];
         libp2p: any;
-        signMessages?: boolean;
-        strictSigning?: boolean;
+        globalSignaturePolicy?: any;
         canRelayMessage?: boolean;
         emitSelf?: boolean;
     });
@@ -66,12 +64,12 @@ declare class PubsubBaseProtocol {
      * @type {Map<string, import('./peer-streams')>}
      */
     peers: Map<string, import('./peer-streams')>;
-    signMessages: boolean;
     /**
-     * If message signing should be required for incoming messages
-     * @type {boolean}
+     * The signature policy to follow by default
+     *
+     * @type {string}
      */
-    strictSigning: boolean;
+    globalSignaturePolicy: string;
     /**
      * If router can relay received messages, even if not subscribed
      * @type {boolean}
@@ -184,9 +182,9 @@ declare class PubsubBaseProtocol {
      * The default msgID implementation
      * Child class can override this.
      * @param {RPC.Message} msg the message object
-     * @returns {string} message id as string
+     * @returns {Uint8Array} message id as bytes
      */
-    getMsgId(msg: any): string;
+    getMsgId(msg: any): Uint8Array;
     /**
      * Whether to accept a message from a peer
      * Override to create a graylist
@@ -284,7 +282,7 @@ declare class PubsubBaseProtocol {
     getTopics(): string[];
 }
 declare namespace PubsubBaseProtocol {
-    export { message, utils, InMessage, PeerId };
+    export { message, utils, SignaturePolicy, InMessage, PeerId };
 }
 type PeerId = import("peer-id");
 /**
@@ -305,3 +303,7 @@ type InMessage = {
  */
 declare const message: typeof import('./message');
 declare const utils: typeof import("./utils");
+declare const SignaturePolicy: {
+    StrictSign: string;
+    StrictNoSign: string;
+};

src/pubsub/index.js

@@ -13,6 +13,7 @@ const { codes } = require('./errors')
  */
 const message = require('./message')
 const PeerStreams = require('./peer-streams')
+const { SignaturePolicy } = require('./signature-policy')
 const utils = require('./utils')
 
 const {
@@ -44,8 +45,7 @@ class PubsubBaseProtocol extends EventEmitter {
    * @param {String} props.debugName log namespace
    * @param {Array<string>|string} props.multicodecs protocol identificers to connect
    * @param {Libp2p} props.libp2p
-   * @param {boolean} [props.signMessages = true] if messages should be signed
-   * @param {boolean} [props.strictSigning = true] if message signing should be required
+   * @param {SignaturePolicy} [props.globalSignaturePolicy = SignaturePolicy.StrictSign] defines how signatures should be handled
    * @param {boolean} [props.canRelayMessage = false] if can relay messages not subscribed
    * @param {boolean} [props.emitSelf = false] if publish should emit to self, if subscribed
    * @abstract
@@ -54,8 +54,7 @@ class PubsubBaseProtocol extends EventEmitter {
     debugName,
     multicodecs,
     libp2p,
-    signMessages = true,
-    strictSigning = true,
+    globalSignaturePolicy = SignaturePolicy.StrictSign,
     canRelayMessage = false,
     emitSelf = false
   }) {
@@ -109,14 +108,17 @@ class PubsubBaseProtocol extends EventEmitter {
      */
     this.peers = new Map()
 
-    // Message signing
-    this.signMessages = signMessages
+    // validate signature policy
+    if (!SignaturePolicy[globalSignaturePolicy]) {
+      throw errcode(new Error('Invalid global signature policy'), codes.ERR_INVALID_SIGUATURE_POLICY)
+    }
 
     /**
-     * If message signing should be required for incoming messages
-     * @type {boolean}
+     * The signature policy to follow by default
+     *
+     * @type {string}
      */
-    this.strictSigning = strictSigning
+    this.globalSignaturePolicy = globalSignaturePolicy
 
     /**
      * If router can relay received messages, even if not subscribed
@@ -437,10 +439,18 @@ class PubsubBaseProtocol extends EventEmitter {
    * The default msgID implementation
    * Child class can override this.
    * @param {RPC.Message} msg the message object
-   * @returns {string} message id as string
+   * @returns {Uint8Array} message id as bytes
    */
   getMsgId (msg) {
-    return utils.msgId(msg.from, msg.seqno)
+    const signaturePolicy = this.globalSignaturePolicy
+    switch (signaturePolicy) {
+      case SignaturePolicy.StrictSign:
+        return utils.msgId(msg.from, msg.seqno)
+      case SignaturePolicy.StrictNoSign:
+        return utils.noSignMsgId(msg.data)
+      default:
+        throw errcode(new Error('Cannot get message id: unhandled signature policy: ' + signaturePolicy), codes.ERR_UNHANDLED_SIGNATURE_POLICY)
+    }
   }
 
   /**
@@ -511,16 +521,36 @@ class PubsubBaseProtocol extends EventEmitter {
    * @returns {Promise<void>}
    */
   async validate (message) { // eslint-disable-line require-await
-    // If strict signing is on and we have no signature, abort
-    if (this.strictSigning && !message.signature) {
-      throw errcode(new Error('Signing required and no signature was present'), codes.ERR_MISSING_SIGNATURE)
+    const signaturePolicy = this.globalSignaturePolicy
+    switch (signaturePolicy) {
+      case SignaturePolicy.StrictNoSign:
+        if (message.from) {
+          throw errcode(new Error('StrictNoSigning: from should not be present'), codes.ERR_UNEXPECTED_FROM)
+        }
+        if (message.signature) {
+          throw errcode(new Error('StrictNoSigning: signature should not be present'), codes.ERR_UNEXPECTED_SIGNATURE)
+        }
+        if (message.key) {
+          throw errcode(new Error('StrictNoSigning: key should not be present'), codes.ERR_UNEXPECTED_KEY)
+        }
+        if (message.seqno) {
+          throw errcode(new Error('StrictNoSigning: seqno should not be present'), codes.ERR_UNEXPECTED_SEQNO)
+        }
+        break
+      case SignaturePolicy.StrictSign:
+        if (!message.signature) {
+          throw errcode(new Error('StrictSigning: Signing required and no signature was present'), codes.ERR_MISSING_SIGNATURE)
+        }
+        if (!message.seqno) {
+          throw errcode(new Error('StrictSigning: Signing required and no seqno was present'), codes.ERR_MISSING_SEQNO)
+        }
+        if (!(await verifySignature(message))) {
+          throw errcode(new Error('StrictSigning: Invalid message signature'), codes.ERR_INVALID_SIGNATURE)
+        }
+        break
+      default:
+        throw errcode(new Error('Cannot validate message: unhandled signature policy: ' + signaturePolicy), codes.ERR_UNHANDLED_SIGNATURE_POLICY)
     }
-
-    // Check the message signature if present
-    if (message.signature && !(await verifySignature(message))) {
-      throw errcode(new Error('Invalid message signature'), codes.ERR_INVALID_SIGNATURE)
-    }
-
     for (const topic of message.topicIDs) {
       const validatorFn = this.topicValidators.get(topic)
       if (!validatorFn) {
@@ -538,11 +568,16 @@ class PubsubBaseProtocol extends EventEmitter {
    * @returns {Promise<Message>}
    */
   _buildMessage (message) {
-    const msg = utils.normalizeOutRpcMessage(message)
-    if (this.signMessages) {
-      return signMessage(this.peerId, msg)
-    } else {
-      return message
+    const signaturePolicy = this.globalSignaturePolicy
+    switch (signaturePolicy) {
+      case SignaturePolicy.StrictSign:
+        message.from = this.peerId.toB58String()
+        message.seqno = utils.randomSeqno()
+        return signMessage(this.peerId, utils.normalizeOutRpcMessage(message))
+      case SignaturePolicy.StrictNoSign:
+        return message
+      default:
+        throw errcode(new Error('Cannot build message: unhandled signature policy: ' + signaturePolicy), codes.ERR_UNHANDLED_SIGNATURE_POLICY)
     }
   }
 
@@ -586,13 +621,11 @@ class PubsubBaseProtocol extends EventEmitter {
     const from = this.peerId.toB58String()
     let msgObject = {
       receivedFrom: from,
-      from: from,
       data: message,
-      seqno: utils.randomSeqno(),
       topicIDs: [topic]
     }
 
-    // ensure that any operations performed on the message will include the signature
+    // ensure that the message follows the signature policy
     const outMsg = await this._buildMessage(msgObject)
     msgObject = utils.normalizeInRpcMessage(outMsg)
 
@@ -666,3 +699,4 @@ class PubsubBaseProtocol extends EventEmitter {
 module.exports = PubsubBaseProtocol
 module.exports.message = message
 module.exports.utils = utils
+module.exports.SignaturePolicy = SignaturePolicy

src/pubsub/signature-policy.d.ts

@@ -0,0 +1,4 @@
+export namespace SignaturePolicy {
+    export const StrictSign: string;
+    export const StrictNoSign: string;
+}

src/pubsub/signature-policy.js

@@ -0,0 +1,28 @@
+'use strict'
+
+/**
+ * Enum for Signature Policy
+ * Details how message signatures are produced/consumed
+ */
+exports.SignaturePolicy = {
+  /**
+   * On the producing side:
+   * * Build messages with the signature, key (from may be enough for certain inlineable public key types), from and seqno fields.
+   *
+   * On the consuming side:
+   * * Enforce the fields to be present, reject otherwise.
+   * * Propagate only if the fields are valid and signature can be verified, reject otherwise.
+   */
+  StrictSign: 'StrictSign',
+  /**
+   * On the producing side:
+   * * Build messages without the signature, key, from and seqno fields.
+   * * The corresponding protobuf key-value pairs are absent from the marshalled message, not just empty.
+   *
+   * On the consuming side:
+   * * Enforce the fields to be absent, reject otherwise.
+   * * Propagate only if the fields are absent, reject otherwise.
+   * * A message_id function will not be able to use the above fields, and should instead rely on the data field. A commonplace strategy is to calculate a hash.
+   */
+  StrictNoSign: 'StrictNoSign'
+}

src/pubsub/tests/api.js

@@ -76,7 +76,7 @@ module.exports = (common) => {
       const defer = pDefer()
 
       const handler = (msg) => {
-        expect(msg).to.exist()
+        expect(msg).to.not.eql(undefined)
         defer.resolve()
       }
 

src/pubsub/tests/messages.js

@@ -10,6 +10,7 @@ const uint8ArrayFromString = require('uint8arrays/from-string')
 
 const { utils } = require('..')
 const PeerStreams = require('../peer-streams')
+const { SignaturePolicy } = require('../signature-policy')
 
 const topic = 'foo'
 const data = uint8ArrayFromString('bar')
@@ -31,24 +32,17 @@ module.exports = (common) => {
     })
 
     it('should emit normalized signed messages on publish', async () => {
+      pubsub.globalSignaturePolicy = SignaturePolicy.StrictSign
       sinon.spy(pubsub, '_emitMessage')
-      sinon.spy(utils, 'randomSeqno')
 
       await pubsub.publish(topic, data)
       expect(pubsub._emitMessage.callCount).to.eql(1)
 
       const [messageToEmit] = pubsub._emitMessage.getCall(0).args
 
-      const expected = utils.normalizeInRpcMessage(
-        await pubsub._buildMessage({
-          receivedFrom: pubsub.peerId.toB58String(),
-          from: pubsub.peerId.toB58String(),
-          data,
-          seqno: utils.randomSeqno.getCall(0).returnValue,
-          topicIDs: [topic]
-        }))
-
-      expect(messageToEmit).to.eql(expected)
+      expect(messageToEmit.seqno).to.not.eql(undefined)
+      expect(messageToEmit.key).to.not.eql(undefined)
+      expect(messageToEmit.signature).to.not.eql(undefined)
     })
 
     it('should drop unsigned messages', async () => {
@@ -83,18 +77,16 @@ module.exports = (common) => {
     })
 
     it('should not drop unsigned messages if strict signing is disabled', async () => {
+      pubsub.globalSignaturePolicy = SignaturePolicy.StrictNoSign
       sinon.spy(pubsub, '_emitMessage')
       sinon.spy(pubsub, '_publish')
       sinon.spy(pubsub, 'validate')
-      sinon.stub(pubsub, 'strictSigning').value(false)
 
       const peerStream = new PeerStreams({ id: await PeerId.create() })
       const rpc = {
         subscriptions: [],
         msgs: [{
-          from: peerStream.id.toBytes(),
           data,
-          seqno: utils.randomSeqno(),
           topicIDs: [topic]
         }]
       }

src/pubsub/tests/multiple-nodes.js

@@ -52,26 +52,20 @@ module.exports = (common) => {
           await common.teardown()
         })
 
-        it('subscribe to the topic on node a', () => {
+        it('subscribe to the topic on node a', async () => {
           const topic = 'Z'
-          const defer = pDefer()
 
           psA.subscribe(topic)
           expectSet(psA.subscriptions, [topic])
 
-          psB.once('pubsub:subscription-change', () => {
-            expect(psB.peers.size).to.equal(2)
+          await new Promise((resolve) => psB.once('pubsub:subscription-change', resolve))
+          expect(psB.peers.size).to.equal(2)
 
-            const aPeerId = psA.peerId.toB58String()
-            expectSet(psB.topics.get(topic), [aPeerId])
+          const aPeerId = psA.peerId.toB58String()
+          expectSet(psB.topics.get(topic), [aPeerId])
 
-            expect(psC.peers.size).to.equal(1)
-            expect(psC.topics.get(topic)).to.not.exist()
-
-            defer.resolve()
-          })
-
-          return defer.promise
+          expect(psC.peers.size).to.equal(1)
+          expect(psC.topics.get(topic)).to.eql(undefined)
         })
 
         it('subscribe to the topic on node b', async () => {

src/pubsub/utils.d.ts

@@ -1,5 +1,6 @@
 export function randomSeqno(): Uint8Array;
-export function msgId(from: string, seqno: Uint8Array): string;
+export function msgId(from: string, seqno: Uint8Array): Uint8Array;
+export function noSignMsgId(data: Uint8Array): Uint8Array;
 export function anyMatch(a: any[] | Set<any>, b: any[] | Set<any>): boolean;
 export function ensureArray(maybeArray: any): any[];
 export function normalizeInRpcMessage(message: any, peerId: string): any;

src/pubsub/utils.js

@@ -3,6 +3,8 @@
 const randomBytes = require('libp2p-crypto/src/random-bytes')
 const uint8ArrayToString = require('uint8arrays/to-string')
 const uint8ArrayFromString = require('uint8arrays/from-string')
+const PeerId = require('peer-id')
+const multihash = require('multihashes')
 exports = module.exports
 
 /**
@@ -20,13 +22,26 @@ exports.randomSeqno = () => {
  *
  * @param {string} from
  * @param {Uint8Array} seqno
- * @returns {string}
+ * @returns {Uint8Array}
  * @private
  */
 exports.msgId = (from, seqno) => {
-  return from + uint8ArrayToString(seqno, 'base16')
+  const fromBytes = PeerId.createFromB58String(from).id
+  const msgId = new Uint8Array(fromBytes.length + seqno.length)
+  msgId.set(fromBytes, 0)
+  msgId.set(seqno, fromBytes.length)
+  return msgId
 }
 
+/**
+ * Generate a message id, based on message `data`.
+ *
+ * @param {Uint8Array} data
+ * @returns {Uint8Array}
+ * @private
+ */
+exports.noSignMsgId = (data) => multihash.encode(data, 'sha2-256')
+
 /**
  * Check if any member of the first set is also a member
  * of the second set.

src/topology/multicodec-topology.d.ts

@@ -1,5 +1,4 @@
-declare const _exports: MulticodecTopology;
-export = _exports;
+export = MulticodecTopology;
 declare class MulticodecTopology {
     /**
      * @param {Object} props

test/pubsub/message.spec.js

@@ -5,7 +5,7 @@ const { expect } = require('aegir/utils/chai')
 const sinon = require('sinon')
 
 const PubsubBaseImpl = require('../../src/pubsub')
-const { randomSeqno } = require('../../src/pubsub/utils')
+const { SignaturePolicy } = require('../../src/pubsub/signature-policy')
 const {
   createPeerId,
   mockRegistrar
@@ -34,9 +34,7 @@ describe('pubsub base messages', () => {
   it('_buildMessage normalizes and signs messages', async () => {
     const message = {
       receivedFrom: peerId.id,
-      from: peerId.id,
       data: 'hello',
-      seqno: randomSeqno(),
       topicIDs: ['test-topic']
     }
 
@@ -44,27 +42,46 @@ describe('pubsub base messages', () => {
     expect(pubsub.validate(signedMessage)).to.not.be.rejected()
   })
 
-  it('validate with strict signing off will validate a present signature', async () => {
+  it('validate with StrictNoSign will reject a message with from, signature, key, seqno present', async () => {
     const message = {
       receivedFrom: peerId.id,
-      from: peerId.id,
       data: 'hello',
-      seqno: randomSeqno(),
       topicIDs: ['test-topic']
     }
 
-    sinon.stub(pubsub, 'strictSigning').value(false)
+    sinon.stub(pubsub, 'globalSignaturePolicy').value(SignaturePolicy.StrictSign)
+
+    const signedMessage = await pubsub._buildMessage(message)
+
+    sinon.stub(pubsub, 'globalSignaturePolicy').value(SignaturePolicy.StrictNoSign)
+    await expect(pubsub.validate(signedMessage)).to.be.rejected()
+    delete signedMessage.from
+    await expect(pubsub.validate(signedMessage)).to.be.rejected()
+    delete signedMessage.signature
+    await expect(pubsub.validate(signedMessage)).to.be.rejected()
+    delete signedMessage.key
+    await expect(pubsub.validate(signedMessage)).to.be.rejected()
+    delete signedMessage.seqno
+    await expect(pubsub.validate(signedMessage)).to.not.be.rejected()
+  })
+
+  it('validate with StrictNoSign will validate a message without a signature, key, and seqno', async () => {
+    const message = {
+      receivedFrom: peerId.id,
+      data: 'hello',
+      topicIDs: ['test-topic']
+    }
+
+    sinon.stub(pubsub, 'globalSignaturePolicy').value(SignaturePolicy.StrictNoSign)
 
     const signedMessage = await pubsub._buildMessage(message)
     expect(pubsub.validate(signedMessage)).to.not.be.rejected()
   })
 
-  it('validate with strict signing requires a signature', async () => {
+  it('validate with StrictSign requires a signature', async () => {
     const message = {
       receivedFrom: peerId.id,
-      from: peerId.id,
       data: 'hello',
-      seqno: randomSeqno(),
       topicIDs: ['test-topic']
     }
 

test/pubsub/topic-validators.spec.js

@@ -10,8 +10,8 @@ const PeerId = require('peer-id')
 const uint8ArrayEquals = require('uint8arrays/equals')
 const uint8ArrayFromString = require('uint8arrays/from-string')
 
-const { utils } = require('../../src/pubsub')
 const PeerStreams = require('../../src/pubsub/peer-streams')
+const { SignaturePolicy } = require('../../src/pubsub/signature-policy')
 
 const {
   createPeerId,
@@ -30,6 +30,8 @@ describe('topic validators', () => {
     pubsub = new PubsubImplementation(protocol, {
       peerId: peerId,
       registrar: mockRegistrar
+    }, {
+      globalSignaturePolicy: SignaturePolicy.StrictNoSign
     })
 
     pubsub.start()
@@ -42,8 +44,6 @@ describe('topic validators', () => {
   it('should filter messages by topic validator', async () => {
     // use _publish.callCount() to see if a message is valid or not
     sinon.spy(pubsub, '_publish')
-    // Disable strict signing
-    sinon.stub(pubsub, 'strictSigning').value(false)
     sinon.stub(pubsub.peers, 'get').returns({})
     const filteredTopic = 't'
     const peer = new PeerStreams({ id: await PeerId.create() })
@@ -59,9 +59,7 @@ describe('topic validators', () => {
     const validRpc = {
       subscriptions: [],
       msgs: [{
-        from: peer.id.toBytes(),
         data: uint8ArrayFromString('a message'),
-        seqno: utils.randomSeqno(),
         topicIDs: [filteredTopic]
       }]
     }
@@ -76,9 +74,7 @@ describe('topic validators', () => {
     const invalidRpc = {
       subscriptions: [],
       msgs: [{
-        from: peer.id.toBytes(),
         data: uint8ArrayFromString('a different message'),
-        seqno: utils.randomSeqno(),
         topicIDs: [filteredTopic]
       }]
     }
@@ -94,9 +90,7 @@ describe('topic validators', () => {
     const invalidRpc2 = {
       subscriptions: [],
       msgs: [{
-        from: peer.id.toB58String(),
         data: uint8ArrayFromString('a different message'),
-        seqno: utils.randomSeqno(),
         topicIDs: [filteredTopic]
       }]
     }

test/pubsub/utils.spec.js

@@ -15,15 +15,11 @@ describe('utils', () => {
     expect(first).to.not.eql(second)
   })
 
-  it('msgId', () => {
-    expect(utils.msgId('hello', uint8ArrayFromString('world'))).to.be.eql('hello776f726c64')
-  })
-
   it('msgId should not generate same ID for two different Uint8Arrays', () => {
     const peerId = 'QmPNdSYk5Rfpo5euNqwtyizzmKXMNHdXeLjTQhcN4yfX22'
     const msgId0 = utils.msgId(peerId, uint8ArrayFromString('15603533e990dfde', 'base16'))
     const msgId1 = utils.msgId(peerId, uint8ArrayFromString('15603533e990dfe0', 'base16'))
-    expect(msgId0).to.not.eql(msgId1)
+    expect(msgId0).to.not.deep.equal(msgId1)
   })
 
   it('anyMatch', () => {