api/api.go

   1 package api
   2
   3 import (
   4         "crypto/tls"
   5         "net"
   6         "net/http"
   7         "sync"
   8         "time"
   9
  10         "github.com/kr/secureheader"
  11         log "github.com/sirupsen/logrus"
  12         cmn "github.com/tendermint/tmlibs/common"
  13
  14         "github.com/vapor/accesstoken"
  15         cfg "github.com/vapor/config"
  16         "github.com/vapor/dashboard/dashboard"
  17         "github.com/vapor/dashboard/equity"
  18         "github.com/vapor/errors"
  19         "github.com/vapor/event"
  20         "github.com/vapor/net/http/authn"
  21         "github.com/vapor/net/http/gzip"
  22         "github.com/vapor/net/http/httpjson"
  23         "github.com/vapor/net/http/static"
  24         "github.com/vapor/net/websocket"
  25         "github.com/vapor/netsync/peers"
  26         "github.com/vapor/p2p"
  27         "github.com/vapor/proposal/blockproposer"
  28         "github.com/vapor/protocol"
  29         "github.com/vapor/wallet"
  30 )
  31
  32 var (
  33         errNotAuthenticated = errors.New("not authenticated")
  34         httpReadTimeout     = 2 * time.Minute
  35         httpWriteTimeout    = time.Hour
  36 )
  37
  38 const (
  39         // SUCCESS indicates the rpc calling is successful.
  40         SUCCESS = "success"
  41         // FAIL indicated the rpc calling is failed.
  42         FAIL      = "fail"
  43         logModule = "api"
  44 )
  45
  46 // Response describes the response standard.
  47 type Response struct {
  48         Status      string      `json:"status,omitempty"`
  49         Code        string      `json:"code,omitempty"`
  50         Msg         string      `json:"msg,omitempty"`
  51         ErrorDetail string      `json:"error_detail,omitempty"`
  52         Data        interface{} `json:"data,omitempty"`
  53 }
  54
  55 //NewSuccessResponse success response
  56 func NewSuccessResponse(data interface{}) Response {
  57         return Response{Status: SUCCESS, Data: data}
  58 }
  59
  60 //FormatErrResp format error response
  61 func FormatErrResp(err error) (response Response) {
  62         response = Response{Status: FAIL}
  63         root := errors.Root(err)
  64         // Some types cannot be used as map keys, for example slices.
  65         // If an error's underlying type is one of these, don't panic.
  66         // Just treat it like any other missing entry.
  67         defer func() {
  68                 if err := recover(); err != nil {
  69                         response.ErrorDetail = ""
  70                 }
  71         }()
  72
  73         if info, ok := respErrFormatter[root]; ok {
  74                 response.Code = info.ChainCode
  75                 response.Msg = info.Message
  76                 response.ErrorDetail = err.Error()
  77         } else {
  78                 response.Code = respErrFormatter[ErrDefault].ChainCode
  79                 response.Msg = respErrFormatter[ErrDefault].Message
  80                 response.ErrorDetail = err.Error()
  81         }
  82         return response
  83 }
  84
  85 //NewErrorResponse error response
  86 func NewErrorResponse(err error) Response {
  87         response := FormatErrResp(err)
  88         return response
  89 }
  90
  91 type waitHandler struct {
  92         h  http.Handler
  93         wg sync.WaitGroup
  94 }
  95
  96 func (wh *waitHandler) Set(h http.Handler) {
  97         wh.h = h
  98         wh.wg.Done()
  99 }
 100
 101 func (wh *waitHandler) ServeHTTP(w http.ResponseWriter, req *http.Request) {
 102         wh.wg.Wait()
 103         wh.h.ServeHTTP(w, req)
 104 }
 105
 106 // API is the scheduling center for server
 107 type API struct {
 108         sync            NetSync
 109         wallet          *wallet.Wallet
 110         accessTokens    *accesstoken.CredentialStore
 111         chain           *protocol.Chain
 112         server          *http.Server
 113         handler         http.Handler
 114         blockProposer   *blockproposer.BlockProposer
 115         notificationMgr *websocket.WSNotificationManager
 116         eventDispatcher *event.Dispatcher
 117 }
 118
 119 func (a *API) initServer(config *cfg.Config) {
 120         // The waitHandler accepts incoming requests, but blocks until its underlying
 121         // handler is set, when the second phase is complete.
 122         var coreHandler waitHandler
 123         var handler http.Handler
 124
 125         coreHandler.wg.Add(1)
 126         mux := http.NewServeMux()
 127         mux.Handle("/", &coreHandler)
 128
 129         handler = AuthHandler(mux, a.accessTokens, config.Auth.Disable)
 130         handler = RedirectHandler(handler)
 131
 132         secureheader.DefaultConfig.PermitClearLoopback = true
 133         secureheader.DefaultConfig.HTTPSRedirect = false
 134         secureheader.DefaultConfig.Next = handler
 135
 136         a.server = &http.Server{
 137                 // Note: we should not set TLSConfig here;
 138                 // we took care of TLS with the listener in maybeUseTLS.
 139                 Handler:      secureheader.DefaultConfig,
 140                 ReadTimeout:  httpReadTimeout,
 141                 WriteTimeout: httpWriteTimeout,
 142                 // Disable HTTP/2 for now until the Go implementation is more stable.
 143                 // https://github.com/golang/go/issues/16450
 144                 // https://github.com/golang/go/issues/17071
 145                 TLSNextProto: map[string]func(*http.Server, *tls.Conn, http.Handler){},
 146         }
 147
 148         coreHandler.Set(a)
 149 }
 150
 151 // StartServer start the server
 152 func (a *API) StartServer(address string) {
 153         log.WithFields(log.Fields{"module": logModule, "api address:": address}).Info("Rpc listen")
 154         listener, err := net.Listen("tcp", address)
 155         if err != nil {
 156                 cmn.Exit(cmn.Fmt("Failed to register tcp port: %v", err))
 157         }
 158
 159         // The `Serve` call has to happen in its own goroutine because
 160         // it's blocking and we need to proceed to the rest of the core setup after
 161         // we call it.
 162         go func() {
 163                 if err := a.server.Serve(listener); err != nil {
 164                         log.WithFields(log.Fields{"module": logModule, "error": errors.Wrap(err, "Serve")}).Error("Rpc server")
 165                 }
 166         }()
 167 }
 168
 169 type NetSync interface {
 170         IsListening() bool
 171         IsCaughtUp() bool
 172         PeerCount() int
 173         GetNetwork() string
 174         BestPeer() *peers.PeerInfo
 175         DialPeerWithAddress(addr *p2p.NetAddress) error
 176         GetPeerInfos() []*peers.PeerInfo
 177         StopPeer(peerID string) error
 178 }
 179
 180 // NewAPI create and initialize the API
 181 func NewAPI(sync NetSync, wallet *wallet.Wallet, blockProposer *blockproposer.BlockProposer, chain *protocol.Chain, config *cfg.Config, token *accesstoken.CredentialStore, dispatcher *event.Dispatcher, notificationMgr *websocket.WSNotificationManager) *API {
 182         api := &API{
 183                 sync:            sync,
 184                 wallet:          wallet,
 185                 chain:           chain,
 186                 accessTokens:    token,
 187                 blockProposer:   blockProposer,
 188                 eventDispatcher: dispatcher,
 189                 notificationMgr: notificationMgr,
 190         }
 191         api.buildHandler()
 192         api.initServer(config)
 193
 194         return api
 195 }
 196
 197 func (a *API) ServeHTTP(rw http.ResponseWriter, req *http.Request) {
 198         a.handler.ServeHTTP(rw, req)
 199 }
 200
 201 // buildHandler is in charge of all the rpc handling.
 202 func (a *API) buildHandler() {
 203         walletEnable := false
 204         m := http.NewServeMux()
 205         if a.wallet != nil {
 206                 walletEnable = true
 207                 m.Handle("/create-account", jsonHandler(a.createAccount))
 208                 m.Handle("/update-account-alias", jsonHandler(a.updateAccountAlias))
 209                 m.Handle("/list-accounts", jsonHandler(a.listAccounts))
 210                 m.Handle("/delete-account", jsonHandler(a.deleteAccount))
 211
 212                 m.Handle("/create-account-receiver", jsonHandler(a.createAccountReceiver))
 213                 m.Handle("/list-addresses", jsonHandler(a.listAddresses))
 214                 m.Handle("/validate-address", jsonHandler(a.validateAddress))
 215                 m.Handle("/list-pubkeys", jsonHandler(a.listPubKeys))
 216
 217                 m.Handle("/get-mining-address", jsonHandler(a.getMiningAddress))
 218                 m.Handle("/set-mining-address", jsonHandler(a.setMiningAddress))
 219
 220                 m.Handle("/get-coinbase-arbitrary", jsonHandler(a.getCoinbaseArbitrary))
 221                 m.Handle("/set-coinbase-arbitrary", jsonHandler(a.setCoinbaseArbitrary))
 222
 223                 m.Handle("/update-asset-alias", jsonHandler(a.updateAssetAlias))
 224                 m.Handle("/get-asset", jsonHandler(a.getAsset))
 225                 m.Handle("/list-assets", jsonHandler(a.listAssets))
 226
 227                 m.Handle("/create-key", jsonHandler(a.pseudohsmCreateKey))
 228                 m.Handle("/update-key-alias", jsonHandler(a.pseudohsmUpdateKeyAlias))
 229                 m.Handle("/list-keys", jsonHandler(a.pseudohsmListKeys))
 230                 m.Handle("/delete-key", jsonHandler(a.pseudohsmDeleteKey))
 231                 m.Handle("/reset-key-password", jsonHandler(a.pseudohsmResetPassword))
 232                 m.Handle("/check-key-password", jsonHandler(a.pseudohsmCheckPassword))
 233                 m.Handle("/sign-message", jsonHandler(a.signMessage))
 234
 235                 m.Handle("/build-transaction", jsonHandler(a.build))
 236                 m.Handle("/build-chain-transactions", jsonHandler(a.buildChainTxs))
 237                 m.Handle("/sign-transaction", jsonHandler(a.signTemplate))
 238                 m.Handle("/sign-transactions", jsonHandler(a.signTemplates))
 239
 240                 m.Handle("/get-transaction", jsonHandler(a.getTransaction))
 241                 m.Handle("/list-transactions", jsonHandler(a.listTransactions))
 242
 243                 m.Handle("/list-balances", jsonHandler(a.listBalances))
 244                 m.Handle("/list-unspent-outputs", jsonHandler(a.listUnspentOutputs))
 245                 m.Handle("/list-account-votes", jsonHandler(a.listAccountVotes))
 246
 247                 m.Handle("/decode-program", jsonHandler(a.decodeProgram))
 248
 249                 m.Handle("/backup-wallet", jsonHandler(a.backupWalletImage))
 250                 m.Handle("/restore-wallet", jsonHandler(a.restoreWalletImage))
 251                 m.Handle("/rescan-wallet", jsonHandler(a.rescanWallet))
 252                 m.Handle("/wallet-info", jsonHandler(a.getWalletInfo))
 253                 m.Handle("/recovery-wallet", jsonHandler(a.recoveryFromRootXPubs))
 254         } else {
 255                 log.Warn("Please enable wallet")
 256         }
 257
 258         m.Handle("/", alwaysError(errors.New("not Found")))
 259         m.Handle("/error", jsonHandler(a.walletError))
 260
 261         m.Handle("/create-access-token", jsonHandler(a.createAccessToken))
 262         m.Handle("/list-access-tokens", jsonHandler(a.listAccessTokens))
 263         m.Handle("/delete-access-token", jsonHandler(a.deleteAccessToken))
 264         m.Handle("/check-access-token", jsonHandler(a.checkAccessToken))
 265
 266         m.Handle("/submit-transaction", jsonHandler(a.submit))
 267         m.Handle("/submit-transactions", jsonHandler(a.submitTxs))
 268         m.Handle("/estimate-transaction-gas", jsonHandler(a.estimateTxGas))
 269
 270         m.Handle("/get-unconfirmed-transaction", jsonHandler(a.getUnconfirmedTx))
 271         m.Handle("/list-unconfirmed-transactions", jsonHandler(a.listUnconfirmedTxs))
 272         m.Handle("/decode-raw-transaction", jsonHandler(a.decodeRawTransaction))
 273
 274         m.Handle("/get-block", jsonHandler(a.getBlock))
 275         m.Handle("/get-raw-block", jsonHandler(a.getRawBlock))
 276         m.Handle("/get-block-hash", jsonHandler(a.getBestBlockHash))
 277         m.Handle("/get-block-header", jsonHandler(a.getBlockHeader))
 278         m.Handle("/get-block-count", jsonHandler(a.getBlockCount))
 279
 280         m.Handle("/is-mining", jsonHandler(a.isMining))
 281         m.Handle("/set-mining", jsonHandler(a.setMining))
 282
 283         m.Handle("/verify-message", jsonHandler(a.verifyMessage))
 284         m.Handle("/compile", jsonHandler(a.compileEquity))
 285
 286         m.Handle("/gas-rate", jsonHandler(a.gasRate))
 287         m.Handle("/net-info", jsonHandler(a.getNetInfo))
 288
 289         m.Handle("/list-peers", jsonHandler(a.listPeers))
 290         m.Handle("/disconnect-peer", jsonHandler(a.disconnectPeer))
 291         m.Handle("/connect-peer", jsonHandler(a.connectPeer))
 292
 293         m.Handle("/get-merkle-proof", jsonHandler(a.getMerkleProof))
 294
 295         m.Handle("/get-vote-result", jsonHandler(a.getVoteResult))
 296
 297         m.HandleFunc("/websocket-subscribe", a.websocketHandler)
 298
 299         handler := walletHandler(m, walletEnable)
 300         handler = webAssetsHandler(handler)
 301         handler = gzip.Handler{Handler: handler}
 302         a.handler = handler
 303 }
 304
 305 // json Handler
 306 func jsonHandler(f interface{}) http.Handler {
 307         h, err := httpjson.Handler(f, errorFormatter.Write)
 308         if err != nil {
 309                 panic(err)
 310         }
 311         return h
 312 }
 313
 314 // error Handler
 315 func alwaysError(err error) http.Handler {
 316         return jsonHandler(func() error { return err })
 317 }
 318
 319 func webAssetsHandler(next http.Handler) http.Handler {
 320         mux := http.NewServeMux()
 321         mux.Handle("/dashboard/", http.StripPrefix("/dashboard/", static.Handler{
 322                 Assets:  dashboard.Files,
 323                 Default: "index.html",
 324         }))
 325         mux.Handle("/equity/", http.StripPrefix("/equity/", static.Handler{
 326                 Assets:  equity.Files,
 327                 Default: "index.html",
 328         }))
 329         mux.Handle("/", next)
 330
 331         return mux
 332 }
 333
 334 // AuthHandler access token auth Handler
 335 func AuthHandler(handler http.Handler, accessTokens *accesstoken.CredentialStore, authDisable bool) http.Handler {
 336         authenticator := authn.NewAPI(accessTokens, authDisable)
 337
 338         return http.HandlerFunc(func(rw http.ResponseWriter, req *http.Request) {
 339                 // TODO(tessr): check that this path exists; return early if this path isn't legit
 340                 req, err := authenticator.Authenticate(req)
 341                 if err != nil {
 342                         log.WithFields(log.Fields{"module": logModule, "error": errors.Wrap(err, "Serve")}).Error("Authenticate fail")
 343                         err = errors.WithDetail(errNotAuthenticated, err.Error())
 344                         errorFormatter.Write(req.Context(), rw, err)
 345                         return
 346                 }
 347                 handler.ServeHTTP(rw, req)
 348         })
 349 }
 350
 351 // RedirectHandler redirect to dashboard handler
 352 func RedirectHandler(next http.Handler) http.Handler {
 353         return http.HandlerFunc(func(w http.ResponseWriter, req *http.Request) {
 354                 if req.URL.Path == "/" {
 355                         http.Redirect(w, req, "/dashboard/", http.StatusFound)
 356                         return
 357                 }
 358                 next.ServeHTTP(w, req)
 359         })
 360 }
 361
 362 func walletHandler(m *http.ServeMux, walletEnable bool) http.Handler {
 363         return http.HandlerFunc(func(w http.ResponseWriter, req *http.Request) {
 364                 // when the wallet is not been opened and the url path is not been found, modify url path to error,
 365                 // and redirect handler to error
 366                 if _, pattern := m.Handler(req); pattern != req.URL.Path && !walletEnable {
 367                         req.URL.Path = "/error"
 368                         walletRedirectHandler(w, req)
 369                         return
 370                 }
 371
 372                 m.ServeHTTP(w, req)
 373         })
 374 }
 375
 376 // walletRedirectHandler redirect to error when the wallet is closed
 377 func walletRedirectHandler(w http.ResponseWriter, req *http.Request) {
 378         h := http.RedirectHandler(req.URL.String(), http.StatusMovedPermanently)
 379         h.ServeHTTP(w, req)
 380 }