lotus/cmd/lotus-fountain/main.go

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package main
import (
"bytes"
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"context"
"fmt"
"net"
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"net/http"
"os"
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"strconv"
"time"
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rice "github.com/GeertJohan/go.rice"
"github.com/filecoin-project/specs-actors/actors/abi"
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"github.com/filecoin-project/specs-actors/actors/builtin"
"github.com/filecoin-project/specs-actors/actors/builtin/power"
"github.com/ipfs/go-cid"
logging "github.com/ipfs/go-log/v2"
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peer "github.com/libp2p/go-libp2p-peer"
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"golang.org/x/xerrors"
"gopkg.in/urfave/cli.v2"
"github.com/filecoin-project/go-address"
"github.com/filecoin-project/lotus/api"
"github.com/filecoin-project/lotus/build"
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"github.com/filecoin-project/lotus/chain/actors"
"github.com/filecoin-project/lotus/chain/types"
lcli "github.com/filecoin-project/lotus/cli"
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)
var log = logging.Logger("main")
var sendPerRequest, _ = types.ParseFIL("0.005")
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func main() {
logging.SetLogLevel("*", "INFO")
log.Info("Starting fountain")
local := []*cli.Command{
runCmd,
}
app := &cli.App{
Name: "lotus-fountain",
Usage: "Devnet token distribution utility",
Version: build.UserVersion,
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Flags: []cli.Flag{
&cli.StringFlag{
Name: "repo",
EnvVars: []string{"LOTUS_PATH"},
Value: "~/.lotus", // TODO: Consider XDG_DATA_HOME
},
},
Commands: local,
}
if err := app.Run(os.Args); err != nil {
log.Warn(err)
return
}
}
var runCmd = &cli.Command{
Name: "run",
Usage: "Start lotus fountain",
Flags: []cli.Flag{
&cli.StringFlag{
Name: "front",
Value: "127.0.0.1:7777",
},
&cli.StringFlag{
Name: "from",
},
},
Action: func(cctx *cli.Context) error {
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nodeApi, closer, err := lcli.GetFullNodeAPI(cctx)
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if err != nil {
return err
}
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defer closer()
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ctx := lcli.ReqContext(cctx)
v, err := nodeApi.Version(ctx)
if err != nil {
return err
}
log.Info("Remote version: %s", v.Version)
from, err := address.NewFromString(cctx.String("from"))
if err != nil {
return xerrors.Errorf("parsing source address (provide correct --from flag!): %w", err)
}
h := &handler{
ctx: ctx,
api: nodeApi,
from: from,
limiter: NewLimiter(LimiterConfig{
TotalRate: time.Second,
TotalBurst: 20,
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IPRate: time.Minute,
IPBurst: 5,
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WalletRate: 15 * time.Minute,
WalletBurst: 2,
}),
minerLimiter: NewLimiter(LimiterConfig{
TotalRate: time.Second,
TotalBurst: 20,
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IPRate: 10 * time.Minute,
IPBurst: 2,
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WalletRate: 1 * time.Hour,
WalletBurst: 2,
}),
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}
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http.Handle("/", http.FileServer(rice.MustFindBox("site").HTTPBox()))
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http.HandleFunc("/send", h.send)
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http.HandleFunc("/mkminer", h.mkminer)
http.HandleFunc("/msgwait", h.msgwait)
http.HandleFunc("/msgwaitaddr", h.msgwaitaddr)
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fmt.Printf("Open http://%s\n", cctx.String("front"))
go func() {
<-ctx.Done()
os.Exit(0)
}()
return http.ListenAndServe(cctx.String("front"), nil)
},
}
type handler struct {
ctx context.Context
api api.FullNode
from address.Address
limiter *Limiter
minerLimiter *Limiter
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}
func (h *handler) send(w http.ResponseWriter, r *http.Request) {
to, err := address.NewFromString(r.FormValue("address"))
if err != nil {
w.WriteHeader(400)
w.Write([]byte(err.Error()))
return
}
// Limit based on wallet address
limiter := h.limiter.GetWalletLimiter(to.String())
if !limiter.Allow() {
http.Error(w, http.StatusText(http.StatusTooManyRequests)+": wallet limit", http.StatusTooManyRequests)
return
}
// Limit based on IP
reqIP := r.Header.Get("X-Real-IP")
if reqIP == "" {
h, _, err := net.SplitHostPort(r.RemoteAddr)
if err != nil {
log.Errorf("could not get ip from: %s, err: %s", r.RemoteAddr, err)
}
reqIP = h
}
if i := net.ParseIP(reqIP); i != nil && i.IsLoopback() {
log.Errorf("rate limiting localhost: %s", reqIP)
}
limiter = h.limiter.GetIPLimiter(reqIP)
if !limiter.Allow() {
http.Error(w, http.StatusText(http.StatusTooManyRequests)+": IP limit", http.StatusTooManyRequests)
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return
}
// General limiter to allow throttling all messages that can make it into the mpool
if !h.limiter.Allow() {
http.Error(w, http.StatusText(http.StatusTooManyRequests)+": global limit", http.StatusTooManyRequests)
return
}
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smsg, err := h.api.MpoolPushMessage(h.ctx, &types.Message{
Value: types.BigInt(sendPerRequest),
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From: h.from,
To: to,
GasPrice: types.NewInt(0),
GasLimit: 10000,
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})
if err != nil {
w.WriteHeader(400)
w.Write([]byte(err.Error()))
return
}
w.Write([]byte(smsg.Cid().String()))
}
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func (h *handler) mkminer(w http.ResponseWriter, r *http.Request) {
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owner, err := address.NewFromString(r.FormValue("address"))
if err != nil {
w.WriteHeader(400)
w.Write([]byte(err.Error()))
return
}
if owner.Protocol() != address.BLS {
w.WriteHeader(400)
w.Write([]byte("Miner address must use BLS. A BLS address starts with the prefix 't3'."))
w.Write([]byte("Please create a BLS address by running \"lotus wallet new bls\" while connected to a Lotus node."))
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return
}
ssize, err := strconv.ParseInt(r.FormValue("sectorSize"), 10, 64)
if err != nil {
return
}
log.Infof("%s: create actor start", owner)
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// Limit based on wallet address
limiter := h.minerLimiter.GetWalletLimiter(owner.String())
if !limiter.Allow() {
http.Error(w, http.StatusText(http.StatusTooManyRequests)+": wallet limit", http.StatusTooManyRequests)
return
}
// Limit based on IP
limiter = h.minerLimiter.GetIPLimiter(r.RemoteAddr)
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if !limiter.Allow() {
http.Error(w, http.StatusText(http.StatusTooManyRequests)+": IP limit", http.StatusTooManyRequests)
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return
}
// General limiter owner allow throttling all messages that can make it into the mpool
if !h.minerLimiter.Allow() {
http.Error(w, http.StatusText(http.StatusTooManyRequests)+": global limit", http.StatusTooManyRequests)
return
}
collateral, err := h.api.StatePledgeCollateral(r.Context(), types.EmptyTSK)
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if err != nil {
w.WriteHeader(400)
w.Write([]byte(err.Error()))
return
}
smsg, err := h.api.MpoolPushMessage(h.ctx, &types.Message{
Value: types.BigInt(sendPerRequest),
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From: h.from,
To: owner,
GasPrice: types.NewInt(0),
GasLimit: 10000,
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})
if err != nil {
w.WriteHeader(400)
w.Write([]byte("pushfunds: " + err.Error()))
return
}
log.Infof("%s: push funds %s", owner, smsg.Cid())
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params, err := actors.SerializeParams(&power.CreateMinerParams{
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Owner: owner,
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Worker: owner,
SectorSize: abi.SectorSize(ssize),
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Peer: peer.ID("SETME"),
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})
if err != nil {
w.WriteHeader(400)
w.Write([]byte(err.Error()))
return
}
createStorageMinerMsg := &types.Message{
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To: builtin.StoragePowerActorAddr,
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From: h.from,
Value: types.BigAdd(collateral, types.BigDiv(collateral, types.NewInt(100))),
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Method: builtin.MethodsPower.CreateMiner,
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Params: params,
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GasLimit: 10000000,
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GasPrice: types.NewInt(0),
}
signed, err := h.api.MpoolPushMessage(r.Context(), createStorageMinerMsg)
if err != nil {
w.WriteHeader(400)
w.Write([]byte(err.Error()))
return
}
log.Infof("%s: create miner msg: %s", owner, signed.Cid())
http.Redirect(w, r, fmt.Sprintf("/wait.html?f=%s&m=%s&o=%s", signed.Cid(), smsg.Cid(), owner), 303)
}
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func (h *handler) msgwait(w http.ResponseWriter, r *http.Request) {
c, err := cid.Parse(r.FormValue("cid"))
if err != nil {
w.WriteHeader(400)
w.Write([]byte(err.Error()))
return
}
mw, err := h.api.StateWaitMsg(r.Context(), c)
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if err != nil {
w.WriteHeader(400)
w.Write([]byte(err.Error()))
return
}
if mw.Receipt.ExitCode != 0 {
w.WriteHeader(400)
w.Write([]byte(xerrors.Errorf("create storage miner failed: exit code %d", mw.Receipt.ExitCode).Error()))
return
}
w.WriteHeader(200)
}
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func (h *handler) msgwaitaddr(w http.ResponseWriter, r *http.Request) {
c, err := cid.Parse(r.FormValue("cid"))
if err != nil {
w.WriteHeader(400)
w.Write([]byte(err.Error()))
return
}
mw, err := h.api.StateWaitMsg(r.Context(), c)
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if err != nil {
w.WriteHeader(400)
w.Write([]byte(err.Error()))
return
}
if mw.Receipt.ExitCode != 0 {
w.WriteHeader(400)
w.Write([]byte(xerrors.Errorf("create storage miner failed: exit code %d", mw.Receipt.ExitCode).Error()))
return
}
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w.WriteHeader(200)
var ma power.CreateMinerReturn
if err := ma.UnmarshalCBOR(bytes.NewReader(mw.Receipt.Return)); err != nil {
log.Errorf("%w", err)
w.WriteHeader(400)
w.Write([]byte(err.Error()))
return
}
fmt.Fprintf(w, "{\"addr\": \"%s\"}", ma.IDAddress)
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}