mess around with fuzzing

LICENSE

@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2026 Joel Wetzell
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

dmx_test.go

@@ -113,3 +113,11 @@ func BenchmarkArtDmxMarshalBinary(b *testing.B) {
 		}
 	}
 }
+
+func FuzzArtDmxUnmarshalBinary(f *testing.F) {
+	f.Add([]byte{65, 114, 116, 45, 78, 101, 116, 0, 0, 80, 0, 14, 237, 0, 1, 0, 2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0})
+	f.Fuzz(func(t *testing.T, data []byte) {
+		artDmx := artnet.ArtDmx{}
+		artDmx.UnmarshalBinary(data)
+	})
+}

testdata/fuzz/FuzzArtTimeCodeUnmarshalBinary/690c02f88aedb646

@@ -0,0 +1,2 @@
+go test fuzz v1
+[]byte("Art-Net\x00000000")

timecode.go

@@ -33,7 +33,7 @@ func (atc *ArtTimeCode) GetID() [8]uint8 {
 }
 
 func (atc *ArtTimeCode) UnmarshalBinary(data []byte) error {
-	if len(data) < 14 {
+	if len(data) < 19 {
 		return errors.New("ArtTimeCode packet must be at least 14 bytes long")
 	}
 

timecode_test.go

@@ -121,3 +121,11 @@ func BenchmarkArtTimeCodeMarshalBinary(b *testing.B) {
 		}
 	}
 }
+
+func FuzzArtTimeCodeUnmarshalBinary(f *testing.F) {
+	f.Add([]byte{65, 114, 116, 45, 78, 101, 116, 0, 0, 151, 0, 14, 0, 0, 11, 17, 3, 0, 0})
+	f.Fuzz(func(t *testing.T, data []byte) {
+		artTimeCode := artnet.ArtTimeCode{}
+		artTimeCode.UnmarshalBinary(data)
+	})
+}