func (service *EMPService) PurgeMessage(r *http.Request, args *[]byte, reply *NilParam) error {
if len(*args) != 16 {
return errors.New("Invalid Txid: Bad Length")
}
txidHash := objects.MakeHash(*args)
if localdb.Contains(txidHash) <= localdb.SENDBOX {
msg, err := localdb.GetMessageDetail(txidHash)
if err != nil {
return errors.New(fmt.Sprintf("Problem Retrieving Message: %s", err))
}
msg.MetaMessage.Purged = true
localdb.AddUpdateMessage(msg, -1)
// Send Purge Request
purge := new(objects.Purge)
purge.Txid = msg.Decrypted.Txid
service.Config.RecvQueue <- *objects.MakeFrame(objects.PURGE, objects.BROADCAST, purge)
return nil
}
return errors.New("Txid Not Found")
}
func (service *EMPService) SendRawMsg(r *http.Request, args *RawMsg, reply *NilParam) error {
if args == nil {
return errors.New("Cannot work with nil message object!")
}
detail, err := localdb.GetAddressDetail(args.Message.AddrHash)
if err != nil {
return err
}
// Create New Message
msg := new(objects.FullMessage)
msg.Decrypted = nil
msg.Encrypted = new(encryption.EncryptedMessage)
msg.Encrypted.FromBytes(args.Message.Content.GetBytes())
// Fill Out Meta Message (save timestamp)
msg.MetaMessage.Purged = false
msg.MetaMessage.TxidHash.FromBytes(args.Message.TxidHash.GetBytes())
if args.Subscription {
msg.MetaMessage.Sender = detail.String
msg.MetaMessage.Recipient = ""
} else {
msg.MetaMessage.Sender = args.SendAddress
msg.MetaMessage.Recipient = detail.String
}
err = localdb.AddUpdateMessage(msg, localdb.SENDBOX)
if err != nil {
return err
}
if args.Subscription {
service.Config.RecvQueue <- *objects.MakeFrame(objects.PUB, objects.BROADCAST, &(args.Message))
} else {
service.Config.RecvQueue <- *objects.MakeFrame(objects.MSG, objects.BROADCAST, &(args.Message))
}
return nil
}
func (service *EMPService) PublishMessage(r *http.Request, args *SendMsg, reply *SendResponse) error {
if !basicAuth(service.Config, r) {
service.Config.Log <- fmt.Sprintf("Unauthorized RPC Request from: %s", r.RemoteAddr)
return errors.New("Unauthorized")
}
// Nil Check
if len(args.Sender) == 0 || len(args.Plaintext) == 0 {
return errors.New("All fields required.")
}
var err error
// Get Addresses
sendAddr := encryption.StringToAddress(args.Sender)
if len(sendAddr) == 0 {
return errors.New("Invalid sender address!")
}
sender, err := localdb.GetAddressDetail(objects.MakeHash(sendAddr))
if err != nil {
return errors.New(fmt.Sprintf("Error pulling send address from Database: %s", err))
}
if sender.Privkey == nil {
return errors.New("Private Key Required to Publish Message")
}
// Create New Message
msg := new(objects.FullMessage)
msg.Decrypted = new(objects.DecryptedMessage)
msg.Encrypted = nil
txid := make([]byte, len(msg.Decrypted.Txid), cap(msg.Decrypted.Txid))
// Fill out decrypted message
n, err := rand.Read(txid)
if n < len(msg.Decrypted.Txid[:]) || err != nil {
return errors.New(fmt.Sprintf("Problem with random reader: %s", err))
}
copy(msg.Decrypted.Pubkey[:], sender.Pubkey)
msg.Decrypted.Subject = args.Subject
msg.Decrypted.MimeType = "text/plain"
msg.Decrypted.Content = args.Plaintext
msg.Decrypted.Length = uint32(len(msg.Decrypted.Content))
// Fill Out Meta Message (save timestamp)
msg.MetaMessage.Purged = false
msg.MetaMessage.TxidHash = objects.MakeHash(txid)
msg.MetaMessage.Sender = sender.String
msg.MetaMessage.Recipient = "<Subscription Message>"
// Get Signature
priv := new(ecdsa.PrivateKey)
priv.PublicKey.Curve = encryption.GetCurve()
priv.D = new(big.Int)
priv.D.SetBytes(sender.Privkey)
sign := msg.Decrypted.GetBytes()
sign = sign[:len(sign)-65]
signHash := objects.MakeHash(sign)
x, y, err := ecdsa.Sign(rand.Reader, priv, signHash.GetBytes())
if err != nil {
return err
}
copy(msg.Decrypted.Signature[:], encryption.MarshalPubkey(x, y))
// Send message and add to sendbox...
msg.Encrypted = encryption.EncryptPub(service.Config.Log, sender.Privkey, string(msg.Decrypted.GetBytes()))
msg.MetaMessage.Timestamp = time.Now().Round(time.Second)
// Now Add Txid
copy(msg.Decrypted.Txid[:], txid)
err = localdb.AddUpdateMessage(msg, localdb.SENDBOX)
if err != nil {
return err
}
sendMsg := new(objects.Message)
sendMsg.TxidHash = msg.MetaMessage.TxidHash
sendMsg.AddrHash = objects.MakeHash(sender.Address)
sendMsg.Timestamp = msg.MetaMessage.Timestamp
sendMsg.Content = *msg.Encrypted
service.Config.RecvQueue <- *objects.MakeFrame(objects.PUB, objects.BROADCAST, sendMsg)
reply.IsSent = true
// Finish by setting msg's txid
reply.TxidHash = msg.MetaMessage.TxidHash.GetBytes()
return nil
}
func (service *EMPService) OpenMessage(r *http.Request, args *[]byte, reply *objects.FullMessage) error {
if !basicAuth(service.Config, r) {
service.Config.Log <- fmt.Sprintf("Unauthorized RPC Request from: %s", r.RemoteAddr)
return errors.New("Unauthorized")
}
var txidHash objects.Hash
txidHash.FromBytes(*args)
// Get Message from Database
msg, err := localdb.GetMessageDetail(txidHash)
if err != nil {
return err
}
if msg.Encrypted == nil {
*reply = *msg
return nil
}
// If not decrypted, decrypt message and purge
if msg.Decrypted == nil {
recipient, err := localdb.GetAddressDetail(objects.MakeHash(encryption.StringToAddress(msg.MetaMessage.Recipient)))
if err != nil {
return err
}
if recipient.Privkey == nil {
*reply = *msg
return nil
}
// Decrypt Message
decrypted := encryption.Decrypt(service.Config.Log, recipient.Privkey, msg.Encrypted)
if len(decrypted) == 0 {
*reply = *msg
return nil
}
msg.Decrypted = new(objects.DecryptedMessage)
msg.Decrypted.FromBytes(decrypted)
// Update Sender
x, y := encryption.UnmarshalPubkey(msg.Decrypted.Pubkey[:])
address := encryption.GetAddress(service.Config.Log, x, y)
addrStr := encryption.AddressToString(address)
addrHash := objects.MakeHash(address)
detail, _ := localdb.GetAddressDetail(addrHash)
if detail == nil {
detail = new(objects.AddressDetail)
}
detail.Address = address
detail.String = addrStr
detail.Pubkey = msg.Decrypted.Pubkey[:]
localdb.AddUpdateAddress(detail)
msg.MetaMessage.Sender = detail.String
// Send Purge Request
purge := new(objects.Purge)
purge.Txid = msg.Decrypted.Txid
service.Config.RecvQueue <- *objects.MakeFrame(objects.PURGE, objects.BROADCAST, purge)
msg.MetaMessage.Purged = true
localdb.AddUpdateMessage(msg, localdb.Contains(msg.MetaMessage.TxidHash))
} else {
if msg.MetaMessage.Purged == false && localdb.Contains(txidHash) == localdb.INBOX {
msg.MetaMessage.Purged = true
localdb.AddUpdateMessage(msg, localdb.Contains(msg.MetaMessage.TxidHash))
}
}
*reply = *msg
return nil
}