imporve requests to the relay

.gitignore

@@ -3,3 +3,4 @@ config.yml
 relay_metadata.json
 grain.exe
 /build
+/logs

server/db/queryMongo.go

@@ -13,11 +13,12 @@ import (
 // QueryEvents queries events from the MongoDB collection(s) based on filters
 func QueryEvents(filters []relay.Filter, client *mongo.Client, databaseName string) ([]relay.Event, error) {
 	var results []relay.Event
+	var combinedFilters []bson.M
 
+	// Build MongoDB filters for each relay.Filter
 	for _, filter := range filters {
 		filterBson := bson.M{}
 
-		// Construct the BSON query based on the filters
 		if len(filter.IDs) > 0 {
 			filterBson["id"] = bson.M{"$in": filter.IDs}
 		}
@@ -45,23 +46,34 @@ func QueryEvents(filters []relay.Filter, client *mongo.Client, databaseName stri
 			}
 		}
 
+		combinedFilters = append(combinedFilters, filterBson)
+	}
+
+	// Combine all filter conditions using the $or operator
+	query := bson.M{}
+	if len(combinedFilters) > 0 {
+		query["$or"] = combinedFilters
+	}
+
 	opts := options.Find().SetSort(bson.D{{Key: "created_at", Value: -1}})
+
+	// Apply limit if set for initial query
+	for _, filter := range filters {
 		if filter.Limit != nil {
 			opts.SetLimit(int64(*filter.Limit))
 		}
+	}
 
-		// If no specific kinds are specified, query all collections in the database
+	// If no specific kinds are specified, query all collections
-		if len(filter.Kinds) == 0 {
+	if len(filters[0].Kinds) == 0 {
 		collections, err := client.Database(databaseName).ListCollectionNames(context.TODO(), bson.D{})
 		if err != nil {
 			return nil, fmt.Errorf("error listing collections: %v", err)
 		}
 
 		for _, collectionName := range collections {
-				fmt.Printf("Querying collection: %s with query: %v\n", collectionName, filterBson)
-
 			collection := client.Database(databaseName).Collection(collectionName)
-				cursor, err := collection.Find(context.TODO(), filterBson, opts)
+			cursor, err := collection.Find(context.TODO(), query, opts)
 			if err != nil {
 				return nil, fmt.Errorf("error querying collection %s: %v", collectionName, err)
 			}
@@ -80,12 +92,10 @@ func QueryEvents(filters []relay.Filter, client *mongo.Client, databaseName stri
 		}
 	} else {
 		// Query specific collections based on kinds
-			for _, kind := range filter.Kinds {
+		for _, kind := range filters[0].Kinds {
 			collectionName := fmt.Sprintf("event-kind%d", kind)
-				fmt.Printf("Querying collection: %s with query: %v\n", collectionName, filterBson)
-
 			collection := client.Database(databaseName).Collection(collectionName)
-				cursor, err := collection.Find(context.TODO(), filterBson, opts)
+			cursor, err := collection.Find(context.TODO(), query, opts)
 			if err != nil {
 				return nil, fmt.Errorf("error querying collection %s: %v", collectionName, err)
 			}
@@ -103,7 +113,6 @@ func QueryEvents(filters []relay.Filter, client *mongo.Client, databaseName stri
 			}
 		}
 	}
-	}
 
 	return results, nil
 }

server/handlers/req.go

@@ -49,6 +49,7 @@ func HandleReq(ws *websocket.Conn, message []interface{}, subscriptions map[stri
 	}
 }
 
+
 // processRequest handles the actual processing of each request
 func processRequest(ws *websocket.Conn, message []interface{}) {
     if len(message) < 3 {
@@ -58,18 +59,17 @@ func processRequest(ws *websocket.Conn, message []interface{}) {
     }
 
     subID, ok := message[1].(string)
-	if !ok {
+    if !ok || len(subID) == 0 || len(subID) > 64 {
-		fmt.Println("Invalid subscription ID format")
+        fmt.Println("Invalid subscription ID format or length")
-		response.SendClosed(ws, "", "invalid: invalid subscription ID format")
+        response.SendClosed(ws, "", "invalid: subscription ID must be between 1 and 64 characters long")
         return
     }
 
     mu.Lock()
     defer mu.Unlock()
 
-	// Check the current number of subscriptions for the client
+    // Remove oldest subscription if needed
     if len(subscriptions) >= config.GetConfig().Server.MaxSubscriptionsPerClient {
-		// Find and remove the oldest subscription (FIFO)
         var oldestSubID string
         for id := range subscriptions {
             oldestSubID = id
@@ -79,7 +79,7 @@ func processRequest(ws *websocket.Conn, message []interface{}) {
         fmt.Println("Dropped oldest subscription:", oldestSubID)
     }
 
-	// Prepare filters based on the incoming message
+    // Parse and validate filters
     filters := make([]relay.Filter, len(message)-2)
     for i, filter := range message[2:] {
         filterData, ok := filter.(map[string]interface{})
@@ -101,7 +101,14 @@ func processRequest(ws *websocket.Conn, message []interface{}) {
         filters[i] = f
     }
 
-	// Add the new subscription or update the existing one
+    // Validate filters
+    if !utils.ValidateFilters(filters) {
+        fmt.Println("Invalid filters: hex values not valid")
+        response.SendClosed(ws, subID, "invalid: filters contain invalid hex values")
+        return
+    }
+
+    // Add subscription
     subscriptions[subID] = relay.Subscription{Filters: filters}
     fmt.Printf("Subscription updated: %s with %d filters\n", subID, len(filters))
 
@@ -113,13 +120,11 @@ func processRequest(ws *websocket.Conn, message []interface{}) {
         return
     }
 
-	// Log the number of events retrieved
     fmt.Printf("Retrieved %d events for subscription %s\n", len(queriedEvents), subID)
     if len(queriedEvents) == 0 {
         fmt.Printf("No matching events found for subscription %s\n", subID)
     }
 
-	// Send each event back to the client
     for _, evt := range queriedEvents {
         msg := []interface{}{"EVENT", subID, evt}
         msgBytes, _ := json.Marshal(msg)
@@ -131,7 +136,7 @@ func processRequest(ws *websocket.Conn, message []interface{}) {
         }
     }
 
-	// Indicate end of stored events
+    // Send EOSE message
     eoseMsg := []interface{}{"EOSE", subID}
     eoseBytes, _ := json.Marshal(eoseMsg)
     err = websocket.Message.Send(ws, string(eoseBytes))

server/utils/validateFilter.go

@@ -0,0 +1,38 @@
+package utils
+
+import (
+	relay "grain/server/types"
+	"regexp"
+)
+
+// isValidHex validates if the given string is a 64-character lowercase hex string
+func isValidHex(str string) bool {
+	return len(str) == 64 && regexp.MustCompile(`^[a-f0-9]{64}$`).MatchString(str)
+}
+
+// ValidateFilters ensures the IDs, Authors, and Tags follow the correct hex format
+func ValidateFilters(filters []relay.Filter) bool {
+	for _, f := range filters {
+		// Validate IDs
+		for _, id := range f.IDs {
+			if !isValidHex(id) {
+				return false
+			}
+		}
+		// Validate Authors
+		for _, author := range f.Authors {
+			if !isValidHex(author) {
+				return false
+			}
+		}
+		// Validate Tags
+		for _, tags := range f.Tags {
+			for _, tag := range tags {
+				if !isValidHex(tag) {
+					return false
+				}
+			}
+		}
+	}
+	return true
+}