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refactor+feat: Custom Client Handshake + Implement ALPS extension (#142)

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* refactor: split `CompressCertExtension` changes

- Split most of changes for `CompressCertExtension` made to `crypto/tls` files out and moved them to `u_` files.
- Edited some `crypto/tls` files to achieve better programmability for uTLS.
- Minor styling fix.

* feat: implement ALPS Extension draft

- Made necessary modifications to existing types to support ALPS.
- Ported `ApplicationSettingsExtension` implementation from `ulixee/utls` by @blakebyrnes with some adaptation.

Co-Authored-By: Blake Byrnes <115056+blakebyrnes@users.noreply.github.com>

* feat: utlsFakeCustomExtension in ALPS

- Introducing `utlsFakeCustomExtension` to enable implementation for custom extensions to be exchanged via ALPS.
- currently it doesn't do anything.

Co-Authored-By: Blake Byrnes <115056+blakebyrnes@users.noreply.github.com>

* fix: magic number in `StatusRequestV2Extension`

- Fixed magic number `17` in `StatusRequestV2Extension` with pre-defined enum `extensionStatusRequestV2`.

Co-authored-by: Blake Byrnes <115056+blakebyrnes@users.noreply.github.com>
This commit is contained in:
Gaukas Wang 2022-11-17 14:04:29 -07:00 • committed by GitHub
parent 1b3a9ad4c5
commit fb99df2a2e
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13 changed files with 375 additions and 140 deletions
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30
u_common.go
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@ -16,24 +16,27 @@ import (
// Things, supported by utls, but not crypto/tls' are prefixed with "utls"
// Supported things, that have changed their ID are prefixed with "Old"
// Supported but disabled things are prefixed with "Disabled". We will _enable_ them.
// TLS handshake message types.
const (
utlsTypeEncryptedExtensions uint8 = 8 // implemention incomplete by crypto/tls
// https://datatracker.ietf.org/doc/html/rfc8879#section-7.2
utlsTypeCompressedCertificate uint8 = 25
)
// TLS
const (
utlsExtensionPadding uint16 = 21
utlsExtensionExtendedMasterSecret uint16 = 23 // https://tools.ietf.org/html/rfc7627
// https://datatracker.ietf.org/doc/html/rfc8879#section-7.1
utlsExtensionCompressCertificate uint16 = 27
utlsExtensionExtendedMasterSecret uint16 = 23 // https://tools.ietf.org/html/rfc7627
utlsExtensionCompressCertificate uint16 = 27 // https://datatracker.ietf.org/doc/html/rfc8879#section-7.1
utlsExtensionApplicationSettings uint16 = 17513 // not IANA assigned
utlsFakeExtensionCustom uint16 = 1234 // not IANA assigned, for ALPS
// extensions with 'fake' prefix break connection, if server echoes them back
fakeExtensionTokenBinding uint16 = 24
fakeExtensionChannelIDOld uint16 = 30031 // not IANA assigned
fakeOldExtensionChannelID uint16 = 30031 // not IANA assigned
fakeExtensionChannelID uint16 = 30032 // not IANA assigned
fakeExtensionALPS uint16 = 17513 // not IANA assigned
fakeExtensionDelegatedCredentials uint16 = 34
fakeRecordSizeLimit uint16 = 0x001c
// https://datatracker.ietf.org/doc/html/rfc8879#section-7.2
typeCompressedCertificate uint8 = 25
)
const (
@ -60,6 +63,11 @@ const (
FAKE_TLS_ECDHE_ECDSA_WITH_3DES_EDE_CBC_SHA = uint16(0xc008)
)
// Other things
const (
fakeRecordSizeLimit uint16 = 0x001c
)
// newest signatures
var (
FakePKCS1WithSHA224 SignatureScheme = 0x0301