mirror of https://github.com/vacp2p/research.git
233 lines
6.5 KiB
Go
233 lines
6.5 KiB
Go
package main
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//import "context"
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import (
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"github.com/ethereum/go-ethereum/swarm/pss"
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"context"
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"fmt"
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"crypto/ecdsa"
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"os"
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"time"
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"io/ioutil"
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"log"
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"strconv"
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"github.com/ethereum/go-ethereum/common/hexutil"
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"github.com/ethereum/go-ethereum/common"
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"github.com/ethereum/go-ethereum/crypto"
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"github.com/ethereum/go-ethereum/node"
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//import "github.com/ethereum/go-ethereum/log"
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"github.com/ethereum/go-ethereum/p2p"
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//import "github.com/ethereum/go-ethereum/p2p/enode"
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//import "github.com/ethereum/go-ethereum/rpc"
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"github.com/ethereum/go-ethereum/swarm"
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//import "github.com/ethereum/go-ethereum/swarm/network"
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bzzapi "github.com/ethereum/go-ethereum/swarm/api"
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)
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// Two different node processes
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// So A sends to B, and B receives it
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// Later also use Feeds to post to own so B can check/pull
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// XXX: Warning, this is bad design. Should use keystore for this.
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func getHexPrivateKey() string {
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privateKey, err := crypto.GenerateKey()
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if err != nil {
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log.Fatal(err)
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}
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privateKeyBytes := crypto.FromECDSA(privateKey)
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// Debugging, etc
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fmt.Println("Private Key: ", hexutil.Encode(privateKeyBytes))
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fmt.Println("Private Key alt: ", hexutil.Encode(privateKeyBytes)[2:])
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publicKey := privateKey.Public()
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publicKeyECDSA, ok := publicKey.(*ecdsa.PublicKey)
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if !ok {
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log.Fatal("error casting public key to ECDSA")
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}
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publicKeyBytes := crypto.FromECDSAPub(publicKeyECDSA)
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fmt.Println("Public Key: ", hexutil.Encode(publicKeyBytes[4:]))
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address := crypto.PubkeyToAddress(*publicKeyECDSA).Hex()
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fmt.Println("Address: ", address)
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return hexutil.Encode(privateKeyBytes)
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}
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func getPrivateKeyFromFile(keyfile string) *ecdsa.PrivateKey {
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contents, err := ioutil.ReadFile(keyfile)
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if err != nil {
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log.Fatal("Unable to read keyfile", keyfile)
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}
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println(string(contents))
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privateKeyBytes, err := hexutil.Decode(string(contents))
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if err != nil {
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log.Fatal("Unable to get private key bytes")
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}
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privateKey, err := crypto.ToECDSA(privateKeyBytes)
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if err != nil {
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log.Fatal("Unable to get private key")
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}
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publicKey := privateKey.Public()
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publicKeyECDSA, ok := publicKey.(*ecdsa.PublicKey)
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if !ok {
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log.Fatal("error casting public key to ECDSA")
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}
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publicKeyBytes := crypto.FromECDSAPub(publicKeyECDSA)
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address := crypto.PubkeyToAddress(*publicKeyECDSA).Hex()
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fmt.Println("Private Key: ", hexutil.Encode(privateKeyBytes))
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fmt.Println("Public Key: ", hexutil.Encode(publicKeyBytes[4:]))
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fmt.Println("Address: ", address)
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return privateKey
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}
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// Create a node
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func newNode(port int) (*node.Node, error) {
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cfg := &node.DefaultConfig
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cfg.DataDir = fmt.Sprintf("%s%d", ".data_", port)
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cfg.HTTPPort = port
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fmt.Printf("Current data directory is %s\n", cfg.DataDir)
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return node.New(cfg)
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}
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// XXX: This is so sloppy, passing privatekey around
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func newService(privKey *ecdsa.PrivateKey) func(ctx *node.ServiceContext) (node.Service, error) {
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return func(ctx *node.ServiceContext) (node.Service, error) {
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// Create bzzconfig
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// TODO: Setup swarm port
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// XXX: What's difference between Privkey and EnodeKey in Init?
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bzzconfig := bzzapi.NewConfig()
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bzzconfig.Init(privKey, privKey)
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return swarm.NewSwarm(bzzconfig, nil)
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}
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}
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// TODO: Ensure node starts in light node so it doesn't eat up a lot of disk space
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func run(port int, privateKey *ecdsa.PrivateKey) {
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// New node
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node, err := newNode(port)
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if err != nil {
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fmt.Fprintf(os.Stderr, "Node failure: %v\n", err)
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os.Exit(1)
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}
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fmt.Printf("Node: %v\n", node)
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// New Swarm service
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// XXX: Yuck privateKey
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service := newService(privateKey)
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// if err != nil {
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// fmt.Fprint(os.Stderr, "Unable to start swarm service: %v\n", err)
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// os.Exit(1)
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// }
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// fmt.Printf("Swarm service: %x\n", service)
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// Register service
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err = node.Register(service)
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if err != nil {
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fmt.Fprintf(os.Stderr, "Unable to register swarm service: %v\n", err)
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os.Exit(1)
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}
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// Start the node
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err = node.Start()
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if err != nil {
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fmt.Fprintf(os.Stderr, "Unable to start node: %v\n", err)
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os.Exit(1)
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}
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// TODO: Add other peer
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// Get RPC Client
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client, err := node.Attach()
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if err != nil {
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fmt.Fprintf(os.Stderr, "Unable to attach to client: %v\n", err)
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}
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fmt.Printf("RPC Client %v\v", client)
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// Simpler, there should be a stdlib fn for waitHealthy anyway
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time.Sleep(time.Second)
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var nodeinfo p2p.NodeInfo
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err = client.Call(&nodeinfo, "admin_nodeInfo")
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if err != nil {
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fmt.Fprintf(os.Stderr, "Unable to get node info: %v\n", err)
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}
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var baseaddr string
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err = client.Call(&baseaddr, "pss_baseAddr")
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if err != nil {
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fmt.Fprintf(os.Stderr, "Unable to get base addr: %v\n", err)
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}
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fmt.Println("baseAddr", baseaddr)
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var pubkey string
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err = client.Call(&pubkey, "pss_getPublicKey")
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if err != nil {
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fmt.Fprintf(os.Stderr, "Unable to get pss public key: %v\n", err)
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}
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fmt.Println("PublicKey", pubkey)
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var topic string
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err = client.Call(&topic, "pss_stringToTopic", "foo")
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// XXX: Wrong pubkey
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receiver := pubkey
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err = client.Call(nil, "pss_sendAsym", receiver, topic, common.ToHex([]byte("Hello world")))
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msgC := make(chan pss.APIMsg)
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sub, err := client.Subscribe(context.Background(), "pss", msgC, "receive", topic, false, false)
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// XXX: Blocking, etc? Yeah, so run in bg or so
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in := <-msgC
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fmt.Println("Received message", string(in.Msg), "from", fmt.Sprintf("%x", in.Key))
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fmt.Printf("All operations successfully completed.\n")
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// Teardown
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sub.Unsubscribe()
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client.Close()
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node.Stop()
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}
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func main() {
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fmt.Printf("Hello PSS\n")
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// If 1 arg and it is new then generate new
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// If 2 args, first is keyfile second port
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/// XXX: Bad CLI design
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// TODO: Pull this out to separate parseArgs function
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args := os.Args[1:]
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if len(args) == 1 {
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if args[0] == "new" {
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// TODO: Use keystore or something
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privateKey := getHexPrivateKey()
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ioutil.WriteFile("new.key", []byte(privateKey), 0644)
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log.Fatal("Thanks for the fish, your private key is now insecurely stored in new.key")
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} else {
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log.Fatal("Unknown argument, please use 'new' or two arguments (keyfile and port)")
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}
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} else if len(args) == 2 {
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keyfile := args[0]
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portArg := args[1]
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// XXX error handling
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privateKey := getPrivateKeyFromFile(keyfile)
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port, err := strconv.Atoi(portArg)
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if err != nil {
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log.Fatal("Unable to parse port argument", portArg)
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}
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// Start engines
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run(port, privateKey)
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} else {
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log.Fatal("Wrong number of arguments, should be one (new) or two (keyfile and port)")
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}
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}
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// TODO: Here at the moment. Need to make sure it reads nodekey wrt right data dir
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// And then adjust ports. Then we should be able to run
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// go run hello_pss.go alice and hello_pss.go bob, and then it should be able to send and recv
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//
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// Then also integrate feeds
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