Node / rns-mirrors / Reticulum-Go.git / files / pkg / interfaces / modem73_fuzz_test.go

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// SPDX-License-Identifier: Apache-2.0

// Copyright (c) 2024-2026 Quad4.io

package interfaces

import (

"bytes"

"encoding/binary"

"testing"

)

func FuzzModem73ControlFrame(f *testing.F) {

f.Add([]byte{})

f.Add([]byte{0, 0, 0, 2, '{', '}'})

frame, _ := modem73EncodeControl(map[string]any{"cmd": "get_config"})

f.Add(frame)

f.Fuzz(func(t *testing.T, data []byte) {

_, _ = readModem73Control(bytes.NewReader(data))

if len(data) >= 4 {

n := binary.BigEndian.Uint32(data[:4])

if n > modem73MaxControlJSON {

return

}

}

})

}

func FuzzModem73ShortFrameDecision(f *testing.F) {

f.Add([]byte("hi"), uint8(0), uint8(10))

f.Fuzz(func(t *testing.T, payload []byte, policyByte uint8, shortMTU uint8) {

policy := []string{"off", "auto", "always"}[int(policyByte)%3]

mtu := int(shortMTU)

if mtu == 0 {

mtu = 170

}

useShort := policy == "auto" && len(payload) <= mtu

_ = useShort

if policy == "off" && useShort {

t.Fatal("off must not use short")

}

})

}