From 35e5b05fc4b6f8c4351d755f2570bc293f30aaf6 Mon Sep 17 00:00:00 2001
From: Gaukas Wang <i@gauk.as>
Date: Wed, 12 Oct 2022 12:16:55 -0600
Subject: [PATCH] Fix Google Parrots (#125)

* Fix Google Parrots

- Move `HelloChrome_102` to the end of `HelloChrome_` fingerprints for consistency.
- Fixed #123 by adjusting mismatching SupportedVersionsExtension value in `HelloChrome_100`.

* Use same fp for Chrome 100 and 102

According to [TLSFingerprint.io: id e47eae8f8c4887b6](https://tlsfingerprint.io/id/e47eae8f8c4887b6), Chrome 100 may share this fp with 102.
---
 u_parrots.go | 112 +++++++--------------------------------------------
 1 file changed, 14 insertions(+), 98 deletions(-)

diff --git a/u_parrots.go b/u_parrots.go
index aa64d150..120ac3ce 100644
--- a/u_parrots.go
+++ b/u_parrots.go
@@ -429,28 +429,7 @@ func utlsIdToSpec(id ClientHelloID) (ClientHelloSpec, error) {
 				&UtlsPaddingExtension{GetPaddingLen: BoringPaddingStyle},
 			},
 		}, nil
-	case HelloChrome_100:
-		signatureScheme := []SignatureScheme{
-			ECDSAWithP256AndSHA256,
-			ECDSAWithP384AndSHA384,
-			ECDSAWithP521AndSHA512,
-			PSSWithSHA256,
-			PSSWithSHA384,
-			PSSWithSHA512,
-			0x0809,
-			0x080a,
-			0x080b,
-			PKCS1WithSHA256,
-			PKCS1WithSHA384,
-			PKCS1WithSHA512,
-			0x0402,
-			0x0303,
-			0x0301,
-			0x0302,
-			0x0203,
-			0x0201,
-			0x0202,
-		}
+	case HelloChrome_100, HelloChrome_102:
 		return ClientHelloSpec{
 			CipherSuites: []uint16{
 				GREASE_PLACEHOLDER,
@@ -477,7 +456,7 @@ func utlsIdToSpec(id ClientHelloID) (ClientHelloSpec, error) {
 				&UtlsGREASEExtension{},
 				&SNIExtension{},
 				&UtlsExtendedMasterSecretExtension{},
-				&RenegotiationInfoExtension{},
+				&RenegotiationInfoExtension{Renegotiation: RenegotiateOnceAsClient},
 				&SupportedCurvesExtension{[]CurveID{
 					GREASE_PLACEHOLDER,
 					X25519,
@@ -490,7 +469,16 @@ func utlsIdToSpec(id ClientHelloID) (ClientHelloSpec, error) {
 				&SessionTicketExtension{},
 				&ALPNExtension{AlpnProtocols: []string{"h2", "http/1.1"}},
 				&StatusRequestExtension{},
-				&SignatureAlgorithmsExtension{SupportedSignatureAlgorithms: signatureScheme},
+				&SignatureAlgorithmsExtension{SupportedSignatureAlgorithms: []SignatureScheme{
+					ECDSAWithP256AndSHA256,
+					PSSWithSHA256,
+					PKCS1WithSHA256,
+					ECDSAWithP384AndSHA384,
+					PSSWithSHA384,
+					PKCS1WithSHA384,
+					PSSWithSHA512,
+					PKCS1WithSHA512,
+				}},
 				&SCTExtension{},
 				&KeyShareExtension{[]KeyShare{
 					{Group: CurveID(GREASE_PLACEHOLDER), Data: []byte{0}},
@@ -500,16 +488,15 @@ func utlsIdToSpec(id ClientHelloID) (ClientHelloSpec, error) {
 					PskModeDHE,
 				}},
 				&SupportedVersionsExtension{[]uint16{
+					GREASE_PLACEHOLDER,
 					VersionTLS13,
 					VersionTLS12,
-					VersionTLS11,
-					VersionTLS10,
 				}},
 				&UtlsCompressCertExtension{[]CertCompressionAlgo{
 					CertCompressionBrotli,
 				}},
-				&UtlsGREASEExtension{},
 				&ApplicationSettingsExtension{SupportedProtocols: []string{"h2"}},
+				&UtlsGREASEExtension{},
 				&UtlsPaddingExtension{GetPaddingLen: BoringPaddingStyle},
 			},
 		}, nil
@@ -632,77 +619,6 @@ func utlsIdToSpec(id ClientHelloID) (ClientHelloSpec, error) {
 				&FakeRecordSizeLimitExtension{0x4001},
 				&UtlsPaddingExtension{GetPaddingLen: BoringPaddingStyle},
 			}}, nil
-	case HelloChrome_102:
-		return ClientHelloSpec{
-			CipherSuites: []uint16{
-				GREASE_PLACEHOLDER,
-				TLS_AES_128_GCM_SHA256,
-				TLS_AES_256_GCM_SHA384,
-				TLS_CHACHA20_POLY1305_SHA256,
-				TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256,
-				TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256,
-				TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384,
-				TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384,
-				TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305,
-				TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305,
-				TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA,
-				TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA,
-				TLS_RSA_WITH_AES_128_GCM_SHA256,
-				TLS_RSA_WITH_AES_256_GCM_SHA384,
-				TLS_RSA_WITH_AES_128_CBC_SHA,
-				TLS_RSA_WITH_AES_256_CBC_SHA,
-			},
-			CompressionMethods: []byte{
-				0x00, // compressionNone
-			},
-			Extensions: []TLSExtension{
-				&UtlsGREASEExtension{},
-				&SNIExtension{},
-				&UtlsExtendedMasterSecretExtension{},
-				&RenegotiationInfoExtension{Renegotiation: RenegotiateOnceAsClient},
-				&SupportedCurvesExtension{[]CurveID{
-					GREASE_PLACEHOLDER,
-					X25519,
-					CurveP256,
-					CurveP384,
-				}},
-				&SupportedPointsExtension{SupportedPoints: []byte{
-					0x00, // pointFormatUncompressed
-				}},
-				&SessionTicketExtension{},
-				&ALPNExtension{AlpnProtocols: []string{"h2", "http/1.1"}},
-				&StatusRequestExtension{},
-				&SignatureAlgorithmsExtension{SupportedSignatureAlgorithms: []SignatureScheme{
-					ECDSAWithP256AndSHA256,
-					PSSWithSHA256,
-					PKCS1WithSHA256,
-					ECDSAWithP384AndSHA384,
-					PSSWithSHA384,
-					PKCS1WithSHA384,
-					PSSWithSHA512,
-					PKCS1WithSHA512,
-				}},
-				&SCTExtension{},
-				&KeyShareExtension{[]KeyShare{
-					{Group: CurveID(GREASE_PLACEHOLDER), Data: []byte{0}},
-					{Group: X25519},
-				}},
-				&PSKKeyExchangeModesExtension{[]uint8{
-					PskModeDHE,
-				}},
-				&SupportedVersionsExtension{[]uint16{
-					GREASE_PLACEHOLDER,
-					VersionTLS13,
-					VersionTLS12,
-				}},
-				&UtlsCompressCertExtension{[]CertCompressionAlgo{
-					CertCompressionBrotli,
-				}},
-				&ApplicationSettingsExtension{SupportedProtocols: []string{"h2"}},
-				&UtlsGREASEExtension{},
-				&UtlsPaddingExtension{GetPaddingLen: BoringPaddingStyle},
-			},
-		}, nil
 	case HelloFirefox_99:
 		return ClientHelloSpec{
 			TLSVersMin: VersionTLS10,