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).
31 lines
555 B
Go
31 lines
555 B
Go
package device
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import (
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"encoding/binary"
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"time"
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)
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func newTimestampObf(_ string) (obf, error) {
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return ×tampObf{}, nil
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}
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type timestampObf struct{}
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func (o *timestampObf) Obfuscate(dst, src []byte) {
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t := uint32(time.Now().Unix())
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binary.BigEndian.PutUint32(dst, t)
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}
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func (o *timestampObf) Deobfuscate(dst, src []byte) bool {
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// replay attack check?
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// requires time to be always synchronized
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return true
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}
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func (o *timestampObf) ObfuscatedLen(n int) int {
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return 4
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}
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func (o *timestampObf) DeobfuscatedLen(n int) int {
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return 0
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}
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