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Htlcswitch: rename Deobfuscator and Obfuscator interfaces

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This commit renames the Deobfuscator interface to ErrorDecrypter and
the Obfuscator interface to ErrorEncrypter. With this rename, the
purpose of these two interfaces are a bit clearer.

Additionally, DecryptError (which was formerly Deobfuscate) now
directly returns an ForwardingError type instead of the
lnwire.FailureMessage.
This commit is contained in:
Olaoluwa Osuntokun
2017-10-10 19:36:52 -07:00
parent 30a46291f8
commit 12ae63101d
9 changed files with 109 additions and 93 deletions
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18
htlcswitch/iterator.go
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@@ -198,11 +198,13 @@ func (p *OnionProcessor) DecodeHopIterator(r io.Reader, rHash []byte) (HopIterat
}, lnwire.CodeNone
}
// DecodeOnionObfuscator takes an io.Reader which should contain the onion
// packet as original received by a forwarding node and creates an Obfuscator
// instance using the derived shared secret. In the case that en error occurs,
// a lnwire failure code detailing the parsing failure will be returned.
func (p *OnionProcessor) DecodeOnionObfuscator(r io.Reader) (Obfuscator, lnwire.FailCode) {
// ExtractErrorEncrypter takes an io.Reader which should contain the onion
// packet as original received by a forwarding node and creates an
// ErrorEncrypter instance using the derived shared secret. In the case that en
// error occurs, a lnwire failure code detailing the parsing failure will be
// returned.
func (p *OnionProcessor) ExtractErrorEncrypter(r io.Reader) (ErrorEncrypter, lnwire.FailCode) {
onionPkt := &sphinx.OnionPacket{}
if err := onionPkt.Decode(r); err != nil {
switch err {
@@ -215,7 +217,7 @@ func (p *OnionProcessor) DecodeOnionObfuscator(r io.Reader) (Obfuscator, lnwire.
}
}
onionObfuscator, err := sphinx.NewOnionObfuscator(p.router,
onionObfuscator, err := sphinx.NewOnionErrorEncrypter(p.router,
onionPkt.EphemeralKey)
if err != nil {
switch err {
@@ -230,7 +232,7 @@ func (p *OnionProcessor) DecodeOnionObfuscator(r io.Reader) (Obfuscator, lnwire.
}
}
return &FailureObfuscator{
OnionObfuscator: onionObfuscator,
return &SphinxErrorEncrypter{
OnionErrorEncrypter: onionObfuscator,
}, lnwire.CodeNone
}