func (cah *connectionAwaitHandshake) start() (bool, error) {
helloSeg := cah.makeHello()
if err := cah.send(server.SegToBytes(helloSeg)); err != nil {
return cah.maybeRestartConnection(err)
}
if seg, err := cah.readOne(); err == nil {
hello := cmsgs.ReadRootHello(seg)
if cah.verifyHello(&hello) {
if hello.IsClient() {
cah.isClient = true
cah.nextState(&cah.connectionAwaitClientHandshake)
} else {
cah.isServer = true
cah.nextState(&cah.connectionAwaitServerHandshake)
}
return false, nil
} else {
return cah.maybeRestartConnection(fmt.Errorf("Received erroneous hello from peer"))
}
} else {
return cah.maybeRestartConnection(err)
}
}
func (cah *connectionAwaitHandshake) start() (bool, error) {
helloSeg, err := cah.makeHello()
if err != nil {
return false, err
}
buf := new(bytes.Buffer)
if _, err := helloSeg.WriteTo(buf); err != nil {
return false, err
}
if err := cah.send(buf.Bytes()); err != nil {
return false, err
}
if seg, err := capn.ReadFromStream(cah.socket, nil); err == nil {
if hello := msgs.ReadRootHello(seg); cah.verifyHello(&hello) {
sessionKey := [32]byte{}
remotePublicKey := [32]byte{}
copy(remotePublicKey[:], hello.PublicKey())
box.Precompute(&sessionKey, &remotePublicKey, cah.privateKey)
cah.sessionKey = &sessionKey
cah.nonceAryOut[0] = 128
cah.nonce = 0
cah.nextState()
} else {
return false, fmt.Errorf("Received erroneous hello from server")
}
} else {
return false, err
}
return false, nil
}
func (cah *connectionAwaitHandshake) start() (bool, error) {
helloSeg, err := cah.makeHello()
if err != nil {
return cah.maybeRestartConnection(err)
}
if err := cah.send(server.SegToBytes(helloSeg)); err != nil {
return cah.maybeRestartConnection(err)
}
cah.nonce = 0
if seg, err := capn.ReadFromStream(cah.socket, nil); err == nil {
hello := msgs.ReadRootHello(seg)
if cah.verifyHello(&hello) {
sessionKey := [32]byte{}
remotePublicKey := [32]byte{}
copy(remotePublicKey[:], hello.PublicKey())
box.Precompute(&sessionKey, &remotePublicKey, cah.privateKey)
if hello.IsClient() {
cah.Lock()
cah.isClient = true
cah.sessionKey = &sessionKey
cah.Unlock()
cah.nonceAryIn[0] = 128
cah.nextState(&cah.connectionAwaitClientHandshake)
} else {
extendedKey := make([]byte, 64)
copy(extendedKey[:32], sessionKey[:])
copy(extendedKey[32:], cah.connectionManager.passwordHash[:])
sessionKey = sha256.Sum256(extendedKey)
cah.Lock()
cah.isServer = true
cah.sessionKey = &sessionKey
cah.Unlock()
if cah.remoteHost == "" {
cah.nonceAryIn[0] = 128
} else {
cah.nonceAryOut[0] = 128
}
cah.nextState(&cah.connectionAwaitServerHandshake)
}
return false, nil
} else {
return cah.maybeRestartConnection(fmt.Errorf("Received erroneous hello from peer"))
}
} else {
return cah.maybeRestartConnection(err)
}
}