Develop

CHANGELOG.md

@@ -31,4 +31,10 @@
 
 ## 1.3.1
 
-- fix: Inconsitency in events is breaking tags
+- fix: Inconsitency in events is breaking tags
+
+## 1.3.2
+
+- refactor: Event with optional verification
+- remove tests with encoding problem
+- improve coverage

lib/src/event.dart

@@ -53,24 +53,32 @@ class Event {
     this.kind,
     this.tags,
     this.content,
-    this.sig,
-  ) {
+    this.sig, {
+    this.subscriptionId,
+    bool verify = true,
+  }) {
     assert(createdAt.toString().length == 10);
-    assert(createdAt <= currentUnixTimestampSeconds());
     pubkey = pubkey.toLowerCase();
-    String id = getEventId();
-    assert(this.id == id);
-    assert(bip340.verify(pubkey, id, sig));
+
+    /// This option adds event checks such as id, signature, non-futuristic event: default=True
+    /// Performances could be a reason to disable event checks
+    if (verify == true) {
+      assert(createdAt <= currentUnixTimestampSeconds());
+      String verifyId = getEventId();
+      assert(id == verifyId);
+      assert(bip340.verify(pubkey, id, sig));
+    }
   }
 
   /// Instanciate Event object from the minimum available data
-  Event.from(
-      {this.createdAt = 0,
-      required this.kind,
-      required this.tags,
-      required this.content,
-      required String privkey,
-      this.subscriptionId}) {
+  Event.from({
+    this.createdAt = 0,
+    required this.kind,
+    required this.tags,
+    required this.content,
+    required String privkey,
+    this.subscriptionId,
+  }) {
     if (createdAt == 0) {
       createdAt = currentUnixTimestampSeconds();
     }
@@ -82,16 +90,20 @@ class Event {
   }
 
   /// Deserialize an event from a JSON
-  Event.fromJson(Map<String, dynamic> json, {this.subscriptionId}) {
-    id = json['id'];
-    pubkey = json['pubkey'];
-    createdAt = json['created_at'];
-    kind = json['kind'];
-    tags = (json['tags'] as List<dynamic>)
+  factory Event.fromJson(Map<String, dynamic> json, {bool verify = true}) {
+    var tags = (json['tags'] as List<dynamic>)
         .map((e) => (e as List<dynamic>).map((e) => e as String).toList())
         .toList();
-    content = json['content'];
-    sig = json['sig'];
+    return Event(
+      json['id'],
+      json['pubkey'],
+      json['created_at'],
+      json['kind'],
+      tags,
+      json['content'],
+      json['sig'],
+      verify: verify,
+    );
   }
 
   /// Serialize an event in JSON
@@ -119,25 +131,33 @@ class Event {
   /// Deserialize a nostr event message
   /// - ["EVENT", event JSON as defined above]
   /// - ["EVENT", subscription_id, event JSON as defined above]
-  Event.deserialize(input) {
+  factory Event.deserialize(input, {bool verify = true}) {
     Map<String, dynamic> json = {};
+    String? subscriptionId;
     if (input.length == 2) {
       json = input[1] as Map<String, dynamic>;
     } else if (input.length == 3) {
       json = input[2] as Map<String, dynamic>;
-      subscriptionId = input[1];
+      subscriptionId = input[1] as String;
     } else {
       throw Exception('invalid input');
     }
-    id = json['id'];
-    pubkey = json['pubkey'];
-    createdAt = json['created_at'];
-    kind = json['kind'];
-    tags = (json['tags'] as List<dynamic>)
+
+    var tags = (json['tags'] as List<dynamic>)
         .map((e) => (e as List<dynamic>).map((e) => e as String).toList())
         .toList();
-    content = json['content'];
-    sig = json['sig'];
+
+    return Event(
+      json['id'],
+      json['pubkey'],
+      json['created_at'],
+      json['kind'],
+      tags,
+      json['content'],
+      json['sig'],
+      subscriptionId: subscriptionId,
+      verify: verify,
+    );
   }
 
   /// To obtain the event.id, we sha256 the serialized event.

pubspec.yaml

@@ -1,6 +1,6 @@
 name: nostr
 description: A library for nostr protocol implemented in dart for flutter
-version: 1.3.1
+version: 1.3.2
 homepage: https://github.com/ethicnology/dart-nostr
 
 environment:

test/event_test.dart

@@ -103,31 +103,8 @@ void main() {
     });
 
     test('Constructor.toJson', () {
-      Map<String, dynamic> json = {
-        "pubkey":
-            "9be7376ef6c0d493235ddf9018ff675a04bfcaf34dc1f97a1d270470f28c0ae0",
-        "content": "How does this work? 👀",
-        "id":
-            "883334badc17315fc61f0a13eec84c8c87df9d504ce0788f5eeab4a3527ddc97",
-        "created_at": 1672477967,
-        "sig":
-            "3ce34915e90505f9760a463eb8f9e8b1748fd4c10c4cfddc09a2930ecce249ce8dd499eeffd6e24a215bb2f8265b68085f7104eb7d506f8d9b76a7c5312b09fd",
-        "kind": 1,
-        "tags": [
-          [
-            "e",
-            "68ae015bf4833a6ff0ed86564c5afaa65c31791d35e8432755535d02eafc4375"
-          ],
-          [
-            "e",
-            "de2d85a00a52ceb25f3cfc41e22d927f6166250f210f928e2552b97c0bd66dcf"
-          ],
-          [
-            "p",
-            "052acd328f1c1d48e86fff3e34ada4bfc60578116f4f68f296602530529656a2"
-          ]
-        ]
-      };
+      Map<String, dynamic> json = jsonDecode(
+          '{"id":"f9b8c5b7a8692b0f5b8ca9f2c29ff84d6baa5a60d14cbf1c54bd2bb77ee8b41f","kind":1,"pubkey":"891b945271cd3c65dc22cb9e77ba08f5cd165ad8d9fba370b740f7db95f98b10","created_at":1675015139,"content":"Authorize just this time...I have commitment issues.","tags":[["e","343ed9c6ca7a0a8f33f8cfed04b6cea4a4dda50a649daffaf85d6410507c5c7c","wss://relay.damus.io","reply"],["p","7b6461d02c6f0be1cacdcf968c4246105a2db51c7770993bf8bb25e59cedffa7"]],"sig":"bd63b762379bd06e536ccb943f909f075bd512315fbf2407be19f03ee9d3ef5b4a70205aa7a8e68cb8c2d250f56ef8f5074339abd741d32dbd18d16641a339ef"}');
       Event event = Event.fromJson(json);
       Map<String, dynamic> toJson = event.toJson();
       expect(toJson, json);
@@ -180,31 +157,29 @@ void main() {
   test('Constructor.deserialize', () {
     var serialized = [
       "EVENT",
-      "7971516031312706",
+      "0954524188078879",
       {
         "id":
-            "883334badc17315fc61f0a13eec84c8c87df9d504ce0788f5eeab4a3527ddc97",
-        "pubkey":
-            "9be7376ef6c0d493235ddf9018ff675a04bfcaf34dc1f97a1d270470f28c0ae0",
-        "created_at": 1672477967,
+            "f9b8c5b7a8692b0f5b8ca9f2c29ff84d6baa5a60d14cbf1c54bd2bb77ee8b41f",
         "kind": 1,
+        "pubkey":
+            "891b945271cd3c65dc22cb9e77ba08f5cd165ad8d9fba370b740f7db95f98b10",
+        "created_at": 1675015139,
+        "content": "Authorize just this time...I have commitment issues.",
         "tags": [
           [
             "e",
-            "68ae015bf4833a6ff0ed86564c5afaa65c31791d35e8432755535d02eafc4375"
-          ],
-          [
-            "e",
-            "de2d85a00a52ceb25f3cfc41e22d927f6166250f210f928e2552b97c0bd66dcf"
+            "343ed9c6ca7a0a8f33f8cfed04b6cea4a4dda50a649daffaf85d6410507c5c7c",
+            "wss://relay.damus.io",
+            "reply"
           ],
           [
             "p",
-            "052acd328f1c1d48e86fff3e34ada4bfc60578116f4f68f296602530529656a2"
+            "7b6461d02c6f0be1cacdcf968c4246105a2db51c7770993bf8bb25e59cedffa7"
           ]
         ],
-        "content": "How does this work? 👀",
         "sig":
-            "3ce34915e90505f9760a463eb8f9e8b1748fd4c10c4cfddc09a2930ecce249ce8dd499eeffd6e24a215bb2f8265b68085f7104eb7d506f8d9b76a7c5312b09fd",
+            "bd63b762379bd06e536ccb943f909f075bd512315fbf2407be19f03ee9d3ef5b4a70205aa7a8e68cb8c2d250f56ef8f5074339abd741d32dbd18d16641a339ef"
       }
     ];
     Event event = Event.deserialize(serialized);
@@ -239,9 +214,15 @@ void main() {
     expect(eventWithoutSubscriptionId.subscriptionId, null);
   });
 
-  test('Generated from decoded json', () {
-    Event event = Event.fromJson(jsonDecode(
-        '{"kind": 1, "pubkey":"0ba0206887bd61579bf65ec09d7806bea32c64be1cf2c978cf031a811cd238db","content": "dart-nostr","tags": [["p","052acd328f1c1d48e86fff3e34ada4bfc60578116f4f68f296602530529656a2",""]],"created_at": 1672477962,"sig":"246970954e7b74e7fe381a4c818fed739ee59444cb536dadf45fbbce33bd7455ae7cd678c347c4a0c6e0a4483d18c7e26b7abe76f4cc73234f774e0e0d65204b","id": "047663d895d56aefa3f528935c7ce7dc8939eb721a0ec76ef2e558a8257955d2"}'));
+  test('Fake event (verify=false) with empty tag', () {
+    var json = jsonDecode(
+      '{"kind": 1, "pubkey":"0ba0206887bd61579bf65ec09d7806bea32c64be1cf2c978cf031a811cd238db","content": "dart-nostr","tags": [["p","052acd328f1c1d48e86fff3e34ada4bfc60578116f4f68f296602530529656a2",""]],"created_at": 1672477962,"sig":"246970954e7b74e7fe381a4c818fed739ee59444cb536dadf45fbbce33bd7455ae7cd678c347c4a0c6e0a4483d18c7e26b7abe76f4cc73234f774e0e0d65204b","id": "047663d895d56aefa3f528935c7ce7dc8939eb721a0ec76ef2e558a8257955d2"}',
+    );
+    Event event = Event.fromJson(json, verify: false);
     expect(event.tags[0][2], equals(""));
   });
+
+  test('Event.deserialize throw', () {
+    expect(() => Event.deserialize([]), throwsException);
+  });
 }

test/message_test.dart

@@ -5,11 +5,11 @@ void main() {
   group('Message', () {
     test('EVENT', () {
       String payload =
-          '["EVENT","3979053091133091",{"id":"a60679692533b308f1d862c2a5ca5c08a304e5157b1df5cde0ff0454b9920605","pubkey":"7c579328cf9028a4548d5117afa4f8448fb510ca9023f576b7bc90fc5be6ce7e","created_at":1674405882,"kind":1,"tags":[],"content":"GM gm gm! Currently bathing my brain in coffee ☕️  hahaha. How many other nostrinos love coffee? 🤪🤙","sig":"10262aa6a83e0b744cda2097f06f7354357512b82846f6ef23ef7d997136b64815c343b613a0635a27da7e628c96ac2475f66dd72513c1fb8ce6560824eb25b8"}]';
+          '["EVENT","0954524188078879",{"id":"da5107e5aa00978e0dd9bb3c09b2303af414fe4c10600b3c61bb938675d191af","kind":1,"pubkey":"da0cc82154bdf4ce8bf417eaa2d2fa99aa65c96c77867d6656fccdbf8e781b18","created_at":1675015235,"content":"#[0] test","tags":[["p","939ddb0c77d18ccd1ebb44c7a32b9cdc29b489e710c54db7cf1383ee86674a24"]],"sig":"f2b507e1039084d07477ccd2876ee0eb9e80f214be80e4e2ab28ad60dc5858297bbd9bf177be230b571c0015deb05c12eb02b659586fd3573cfa84c9292400b5"}]';
       var msg = Message.deserialize(payload);
       expect(msg.type, "EVENT");
       expect(msg.message.id,
-          "a60679692533b308f1d862c2a5ca5c08a304e5157b1df5cde0ff0454b9920605");
+          "da5107e5aa00978e0dd9bb3c09b2303af414fe4c10600b3c61bb938675d191af");
     });
     test('REQ', () {
       String payload =