90 lines
2.1 KiB
Go
90 lines
2.1 KiB
Go
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package mint
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import (
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"math/rand"
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"testing"
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)
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var structs = []interface{}{
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// Handshake messages
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&ClientHelloBody{},
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&ServerHelloBody{},
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&FinishedBody{VerifyDataLen: 32},
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&EncryptedExtensionsBody{},
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&CertificateBody{},
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&CertificateVerifyBody{},
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// Extensions
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&Extension{},
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&ExtensionList{},
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new(ServerNameExtension),
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&ALPNExtension{},
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&KeyShareExtension{HandshakeType: HandshakeTypeClientHello},
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&KeyShareExtension{HandshakeType: HandshakeTypeHelloRetryRequest},
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&KeyShareExtension{HandshakeType: HandshakeTypeServerHello},
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&SupportedGroupsExtension{},
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&SignatureAlgorithmsExtension{},
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&PreSharedKeyExtension{HandshakeType: HandshakeTypeClientHello},
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&PreSharedKeyExtension{HandshakeType: HandshakeTypeServerHello},
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&SupportedVersionsExtension{},
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}
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var validHex = []string{
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// Handshake messages
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chValidHex,
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shValidHex,
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finValidHex,
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encExtValidHex,
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certValidHex,
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certVerifyValidHex,
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// Extensions
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extValidHex,
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extListValidHex,
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validExtensionTestCases[ExtensionTypeServerName].marshaledHex,
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validExtensionTestCases[ExtensionTypeALPN].marshaledHex,
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keyShareClientHex,
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keyShareHelloRetryHex,
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keyShareServerHex,
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validExtensionTestCases[ExtensionTypeSupportedGroups].marshaledHex,
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validExtensionTestCases[ExtensionTypeSignatureAlgorithms].marshaledHex,
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pskClientHex,
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pskServerHex,
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validExtensionTestCases[ExtensionTypeSupportedVersions].marshaledHex,
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}
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func randomBytes(n int, rand *rand.Rand) []byte {
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r := make([]byte, n)
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for i := 0; i < n; i++ {
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r[i] = byte(rand.Int31())
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}
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return r
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}
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type unmarshaler interface {
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Unmarshal([]byte) (int, error)
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}
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// This just looks for crashes due to bounds errors etc.
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func TestFuzz(t *testing.T) {
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rand := rand.New(rand.NewSource(0))
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for i, iface := range structs {
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m := iface.(unmarshaler)
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// Provide random data
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for j := 0; j < 100; j++ {
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len := rand.Intn(1024)
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bytes := randomBytes(len, rand)
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m.Unmarshal(bytes)
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}
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// Provide partially valid data
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valid := unhex(validHex[i])
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random := randomBytes(10*len(valid), rand)
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for cut := 0; cut < len(valid)-1; cut++ {
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testCase := append(valid[:cut], random...)
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m.Unmarshal(testCase)
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}
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}
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}
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