831d483366
Rebase of the AWG obf graft (wase5feca7on v0.0.3) onto v0.0.5 (2c27bbf4f9, 'Add L3 forwarding support'). 15 of 16 graft files applied clean via 3-way; only send.go conflicted, on a single line (upstream queuedOutboundPackets backpressure decrement vs a graft blank line — took upstream). Key invariant preserved: MessageEncapsulatingTransportSize=0 (graft zeroes the sagernet encapsulating headroom; AWG obfuscation composes the prefix itself via SendBuffers, not Bind.Send prepend). Upstream's InputPacket/InputPackets and the new size-based outbound buffer pool (GetOutboundBuffer/PutOutboundBuffer) are taken verbatim; the graft's RoutineEncryption (header at buffer start) and transport-padding shift in RoutineSequentialSender re-woven around them. Builds clean on linux/android/windows/darwin (device/conn/tun).
39 lines
605 B
Go
39 lines
605 B
Go
package device
|
|
|
|
import (
|
|
"crypto/rand"
|
|
"strconv"
|
|
)
|
|
|
|
func newRandObf(val string) (obf, error) {
|
|
length, err := strconv.Atoi(val)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
return &randObf{
|
|
length: length,
|
|
}, nil
|
|
}
|
|
|
|
type randObf struct {
|
|
length int
|
|
}
|
|
|
|
func (o *randObf) Obfuscate(dst, src []byte) {
|
|
rand.Read(dst[:o.length])
|
|
}
|
|
|
|
func (o *randObf) Deobfuscate(dst, src []byte) bool {
|
|
// there is no way to validate randomness :)
|
|
// assume that it is always true
|
|
return true
|
|
}
|
|
|
|
func (o *randObf) ObfuscatedLen(n int) int {
|
|
return o.length
|
|
}
|
|
|
|
func (o *randObf) DeobfuscatedLen(n int) int {
|
|
return 0
|
|
}
|