func (e *ServerFault) UpdateState(state interfaces.IState) error {
core, err := e.MarshalCore()
if err != nil {
return err
}
verifiedSignatures := 0
for _, fullSig := range e.SignatureList.List {
sig := fullSig.GetSignature()
v, err := state.VerifyAuthoritySignature(core, sig, state.GetLeaderHeight())
if err != nil {
if err.Error() != "Signature Key Invalid or not Federated Server Key" {
return err
}
}
if v == 1 {
verifiedSignatures++
}
}
feds := state.GetFedServers(state.GetLeaderHeight())
//50% threshold
if verifiedSignatures <= len(feds)/2 {
return fmt.Errorf("Quorum not reached for ServerFault")
}
//TODO: do
/*
state.AddFedServer(e.DBHeight, e.IdentityChainID)
state.UpdateAuthorityFromABEntry(e)
*/
return nil
}
func (m *Heartbeat) FollowerExecute(state interfaces.IState) {
for _, auditServer := range state.GetAuditServers(state.GetLeaderHeight()) {
if auditServer.GetChainID().IsSameAs(m.IdentityChainID) {
if m.IdentityChainID.IsSameAs(state.GetIdentityChainID()) {
if m.SecretNumber != state.GetSalt(m.Timestamp) {
panic("We have seen a heartbeat using our Identity that isn't ours")
}
}
auditServer.SetOnline(true)
}
}
}
// Validate the message, given the state. Three possible results:
// < 0 -- Message is invalid. Discard
// 0 -- Cannot tell if message is Valid
// 1 -- Message is valid
// Also return the matching commit, if 1 (Don't put it back into the Commit List)
func (m *RevealEntryMsg) ValidateRTN(state interfaces.IState) (interfaces.IMsg, int) {
commit := state.NextCommit(m.Entry.GetHash())
if commit == nil {
return nil, 0
}
//
// Make sure one of the two proper commits got us here.
var okChain, okEntry bool
m.commitChain, okChain = commit.(*CommitChainMsg)
m.commitEntry, okEntry = commit.(*CommitEntryMsg)
if !okChain && !okEntry { // Discard any invalid entries in the map. Should never happen.
fmt.Println("dddd Bad EB Commit", state.GetFactomNodeName())
return m.ValidateRTN(state)
}
// Now make sure the proper amount of credits were paid to record the entry.
// The chain must exist
if okEntry {
m.IsEntry = true
ECs := int(m.commitEntry.CommitEntry.Credits)
if m.Entry.KSize() > ECs {
fmt.Println("dddd EB Commit is short", state.GetFactomNodeName())
return m.ValidateRTN(state) // Discard commits that are not funded properly.
}
// Make sure we have a chain. If we don't, then bad things happen.
db := state.GetAndLockDB()
dbheight := state.GetLeaderHeight()
eb := state.GetNewEBlocks(dbheight, m.Entry.GetChainID())
eb_db := state.GetNewEBlocks(dbheight-1, m.Entry.GetChainID())
if eb_db == nil {
eb_db, _ = db.FetchEBlockHead(m.Entry.GetChainID())
}
if eb_db == nil && eb == nil {
// If we don't have a chain, put the commit back. Don't want to lose it.
state.PutCommit(m.Entry.GetHash(), commit)
return nil, 0
}
} else {
m.IsEntry = false
ECs := int(m.commitChain.CommitChain.Credits)
if m.Entry.KSize()+10 > ECs { // Discard commits that are not funded properly
return m.ValidateRTN(state)
}
}
return commit, 1
}
func (m *ChangeServerKeyMsg) Validate(state interfaces.IState) int {
return 1
// Check to see if identity exists and is audit or fed server
if !state.VerifyIsAuthority(m.IdentityChainID) {
fmt.Println("ChangeServerKey Error. Server is not an authority")
return -1
}
// Should only be 20 bytes in the hash
if m.AdminBlockChange == constants.TYPE_ADD_BTC_ANCHOR_KEY {
for _, b := range m.Key.Bytes()[21:] {
if b != 0 {
fmt.Println("ChangeServerKey Error. Newkey is invalid length")
return -1
}
}
}
// Check signatures
bytes, err := m.MarshalForSignature()
if err != nil {
fmt.Println("ChangeServerKey Error: Err is not nil, err: ", err.Error())
return -1
}
if m.Signature == nil {
fmt.Println("ChangeServerKey Error: No signiture on ChangeServerKeyMessage")
return -1
}
sig := m.Signature.GetSignature()
authSigned, err := state.VerifyAuthoritySignature(bytes, sig, state.GetLeaderHeight())
//ackSigned, err := m.VerifySignature()
if err != nil {
fmt.Println("ChangeServerKey Error: Err is not nil, err: ", err.Error())
return -1
}
if authSigned < 1 {
fmt.Println("ChangeServerKey Error: Message not signed by an authority")
return -1
}
return 1
}
func HandleV2ChainHead(state interfaces.IState, params interface{}) (interface{}, *primitives.JSONError) {
chainid := new(ChainIDRequest)
err := MapToObject(params, chainid)
if err != nil {
return nil, NewInvalidParamsError()
}
h, err := primitives.HexToHash(chainid.ChainID)
if err != nil {
return nil, NewInvalidHashError()
}
dbase := state.GetAndLockDB()
defer state.UnlockDB()
c := new(ChainHeadResponse)
// get the pending chain head from the current or previous process list in
// the state
lh := state.GetLeaderHeight()
pend1 := state.GetNewEBlocks(lh, h)
pend2 := state.GetNewEBlocks(lh-1, h)
if pend1 != nil || pend2 != nil {
c.ChainInProcessList = true
}
// get the chain head from the database
mr, err := dbase.FetchHeadIndexByChainID(h)
if err != nil {
return nil, NewInvalidHashError()
}
if mr == nil {
if c.ChainInProcessList == false {
return nil, NewMissingChainHeadError()
}
} else {
c.ChainHead = mr.String()
}
return c, nil
}