libs5-go/protocol/storage_location.go

110 lines
2.7 KiB
Go

package protocol
import (
"crypto/ed25519"
"fmt"
libs5_go "git.lumeweb.com/LumeWeb/libs5-go"
"git.lumeweb.com/LumeWeb/libs5-go/encoding"
"git.lumeweb.com/LumeWeb/libs5-go/net"
"git.lumeweb.com/LumeWeb/libs5-go/types"
"git.lumeweb.com/LumeWeb/libs5-go/utils"
"github.com/emirpasic/gods/sets/hashset"
"github.com/vmihailenco/msgpack/v5"
"go.uber.org/zap"
)
var _ IncomingMessageTyped = (*StorageLocation)(nil)
type StorageLocation struct {
raw []byte
hash *encoding.Multihash
kind int
expiry int64
parts []string
publicKey []byte
signature []byte
IncomingMessageTypedImpl
IncomingMessageHandler
}
func (s *StorageLocation) DecodeMessage(dec *msgpack.Decoder) error {
data, err := dec.DecodeRaw()
if err != nil {
return err
}
s.raw = data
return nil
}
func (s *StorageLocation) HandleMessage(node *libs5_go.Node, peer *net.Peer, verifyId bool) error {
hash := encoding.NewMultihash(s.raw[1:34]) // Replace NewMultihash with appropriate function
fmt.Println("Hash:", hash)
typeOfData := s.raw[34]
expiry := utils.DecodeEndian(s.raw[35:39])
partCount := s.raw[39]
parts := []string{}
cursor := 40
for i := 0; i < int(partCount); i++ {
length := utils.DecodeEndian(s.raw[cursor : cursor+2])
cursor += 2
part := string(s.raw[cursor : cursor+int(length)])
parts = append(parts, part)
cursor += int(length)
}
publicKey := s.raw[cursor : cursor+33]
signature := s.raw[cursor+33:]
if types.HashType(publicKey[0]) != types.HashTypeEd25519 { // Replace CID_HASH_TYPES_ED25519 with actual constant
return fmt.Errorf("Unsupported public key type %d", publicKey[0])
}
if !ed25519.Verify(publicKey[1:], s.raw[:cursor], signature) {
return fmt.Errorf("Signature verification failed")
}
nodeId := encoding.NewNodeId(publicKey)
// Assuming `node` is an instance of your Node structure
err := node.AddStorageLocation(hash, nodeId, libs5_go.NewStorageLocation(int(typeOfData), parts, int64(expiry)), s.raw, node.Config()) // Implement AddStorageLocation
if err != nil {
return fmt.Errorf("Failed to add storage location: %s", err)
}
var list *hashset.Set
listVal, ok := node.HashQueryRoutingTable().Get(hash.HashCode()) // Implement HashQueryRoutingTable method
if !ok {
list = hashset.New()
}
list = listVal.(*hashset.Set)
for _, peerIdVal := range list.Values() {
peerId := peerIdVal.(*encoding.NodeId)
if peerId.Equals(nodeId) || peerId.Equals(peer) {
continue
}
if peerVal, ok := node.Services().P2P().Peers().Get(peerId.HashCode()); ok {
foundPeer := peerVal.(net.Peer)
err := foundPeer.SendMessage(s.raw)
if err != nil {
node.Logger().Error("Failed to send message", zap.Error(err))
continue
}
}
node.HashQueryRoutingTable().Remove(hash.HashCode())
}
return nil
}