254 lines
8.8 KiB
Go
254 lines
8.8 KiB
Go
package pairing
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import (
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"bytes"
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"crypto/rand"
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"io"
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"net/http"
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"github.com/btcsuite/btcutil/base58"
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"go.uber.org/zap"
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"github.com/status-im/status-go/protocol/common"
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"github.com/status-im/status-go/signal"
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)
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const (
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// Handler routes for pairing
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pairingBase = "/pairing"
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pairingSendAccount = pairingBase + "/sendAccount"
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pairingReceiveAccount = pairingBase + "/receiveAccount"
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pairingChallenge = pairingBase + "/challenge"
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pairingSyncDeviceSend = pairingBase + "/sendSyncDevice"
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pairingSyncDeviceReceive = pairingBase + "/receiveSyncDevice"
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pairingSendInstallation = pairingBase + "/sendInstallation"
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pairingReceiveInstallation = pairingBase + "/receiveInstallation"
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// Session names
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sessionChallenge = "challenge"
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sessionBlocked = "blocked"
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)
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func handleReceiveAccount(ps *Server) http.HandlerFunc {
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signal.SendLocalPairingEvent(Event{Type: EventConnectionSuccess, Action: ActionPairingAccount})
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logger := ps.GetLogger()
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return func(w http.ResponseWriter, r *http.Request) {
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payload, err := io.ReadAll(r.Body)
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if err != nil {
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signal.SendLocalPairingEvent(Event{Type: EventTransferError, Error: err.Error(), Action: ActionPairingAccount})
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logger.Error("handleReceiveAccount io.ReadAll(r.Body)", zap.Error(err))
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return
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}
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signal.SendLocalPairingEvent(Event{Type: EventTransferSuccess, Action: ActionPairingAccount})
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err = ps.PayloadManager.Receive(payload)
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if err != nil {
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signal.SendLocalPairingEvent(Event{Type: EventProcessError, Error: err.Error(), Action: ActionPairingAccount})
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logger.Error("ps.PayloadManager.Receive(payload)", zap.Error(err))
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return
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}
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signal.SendLocalPairingEvent(Event{Type: EventProcessSuccess, Action: ActionPairingAccount})
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}
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}
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func handleReceiveInstallation(ps *Server) http.HandlerFunc {
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signal.SendLocalPairingEvent(Event{Type: EventConnectionSuccess, Action: ActionPairingInstallation})
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logger := ps.GetLogger()
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return func(w http.ResponseWriter, r *http.Request) {
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payload, err := io.ReadAll(r.Body)
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if err != nil {
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signal.SendLocalPairingEvent(Event{Type: EventTransferError, Error: err.Error(), Action: ActionPairingInstallation})
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logger.Error("handleReceiveInstallation io.ReadAll(r.Body)", zap.Error(err))
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return
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}
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signal.SendLocalPairingEvent(Event{Type: EventTransferSuccess, Action: ActionPairingInstallation})
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err = ps.installationPayloadManager.Receive(payload)
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if err != nil {
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signal.SendLocalPairingEvent(Event{Type: EventProcessError, Error: err.Error(), Action: ActionPairingInstallation})
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logger.Error("ps.installationPayloadManager.Receive(payload)", zap.Error(err))
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return
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}
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signal.SendLocalPairingEvent(Event{Type: EventProcessSuccess, Action: ActionPairingInstallation})
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}
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}
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func handleParingSyncDeviceReceive(ps *Server) http.HandlerFunc {
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signal.SendLocalPairingEvent(Event{Type: EventConnectionSuccess, Action: ActionSyncDevice})
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logger := ps.GetLogger()
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return func(w http.ResponseWriter, r *http.Request) {
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payload, err := io.ReadAll(r.Body)
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if err != nil {
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signal.SendLocalPairingEvent(Event{Type: EventTransferError, Error: err.Error(), Action: ActionSyncDevice})
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logger.Error("handleParingSyncDeviceReceive io.ReadAll(r.Body)", zap.Error(err))
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return
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}
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signal.SendLocalPairingEvent(Event{Type: EventTransferSuccess, Action: ActionSyncDevice})
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err = ps.rawMessagePayloadManager.Receive(payload)
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if err != nil {
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signal.SendLocalPairingEvent(Event{Type: EventProcessError, Error: err.Error(), Action: ActionSyncDevice})
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logger.Error("ps.rawMessagePayloadManager.Receive(payload)", zap.Error(err))
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return
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}
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signal.SendLocalPairingEvent(Event{Type: EventProcessSuccess, Action: ActionSyncDevice})
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}
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}
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func handleSendAccount(ps *Server) http.HandlerFunc {
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signal.SendLocalPairingEvent(Event{Type: EventConnectionSuccess, Action: ActionPairingAccount})
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logger := ps.GetLogger()
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return func(w http.ResponseWriter, r *http.Request) {
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w.Header().Set("Content-Type", "application/octet-stream")
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_, err := w.Write(ps.PayloadManager.ToSend())
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if err != nil {
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signal.SendLocalPairingEvent(Event{Type: EventTransferError, Error: err.Error(), Action: ActionPairingAccount})
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logger.Error("w.Write(ps.PayloadManager.ToSend())", zap.Error(err))
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return
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}
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signal.SendLocalPairingEvent(Event{Type: EventTransferSuccess, Action: ActionPairingAccount})
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ps.PayloadManager.LockPayload()
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}
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}
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func handleSendInstallation(ps *Server) http.HandlerFunc {
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signal.SendLocalPairingEvent(Event{Type: EventConnectionSuccess, Action: ActionPairingInstallation})
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logger := ps.GetLogger()
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return func(w http.ResponseWriter, r *http.Request) {
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w.Header().Set("Content-Type", "application/octet-stream")
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err := ps.installationPayloadManager.Mount()
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if err != nil {
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signal.SendLocalPairingEvent(Event{Type: EventTransferError, Error: err.Error(), Action: ActionPairingInstallation})
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logger.Error("ps.installationPayloadManager.Mount()", zap.Error(err))
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return
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}
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_, err = w.Write(ps.installationPayloadManager.ToSend())
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if err != nil {
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signal.SendLocalPairingEvent(Event{Type: EventTransferError, Error: err.Error(), Action: ActionPairingInstallation})
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logger.Error("w.Write(ps.installationPayloadManager.ToSend())", zap.Error(err))
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return
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}
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signal.SendLocalPairingEvent(Event{Type: EventTransferSuccess, Action: ActionPairingInstallation})
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ps.installationPayloadManager.LockPayload()
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}
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}
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func handlePairingSyncDeviceSend(ps *Server) http.HandlerFunc {
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signal.SendLocalPairingEvent(Event{Type: EventConnectionSuccess, Action: ActionSyncDevice})
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logger := ps.GetLogger()
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return func(w http.ResponseWriter, r *http.Request) {
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w.Header().Set("Content-Type", "application/octet-stream")
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err := ps.rawMessagePayloadManager.Mount()
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if err != nil {
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// maybe better to use a new event type here instead of EventTransferError?
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signal.SendLocalPairingEvent(Event{Type: EventTransferError, Error: err.Error(), Action: ActionSyncDevice})
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logger.Error("ps.rawMessagePayloadManager.Mount()", zap.Error(err))
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return
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}
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_, err = w.Write(ps.rawMessagePayloadManager.ToSend())
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if err != nil {
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signal.SendLocalPairingEvent(Event{Type: EventTransferError, Error: err.Error(), Action: ActionSyncDevice})
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logger.Error("w.Write(ps.rawMessagePayloadManager.ToSend())", zap.Error(err))
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return
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}
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signal.SendLocalPairingEvent(Event{Type: EventTransferSuccess, Action: ActionSyncDevice})
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ps.rawMessagePayloadManager.LockPayload()
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}
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}
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func challengeMiddleware(ps *Server, next http.Handler) http.HandlerFunc {
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logger := ps.GetLogger()
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return func(w http.ResponseWriter, r *http.Request) {
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s, err := ps.cookieStore.Get(r, sessionChallenge)
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if err != nil {
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logger.Error("ps.cookieStore.Get(r, pairingStoreChallenge)", zap.Error(err))
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http.Error(w, "error", http.StatusInternalServerError)
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return
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}
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blocked, ok := s.Values[sessionBlocked].(bool)
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if ok && blocked {
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http.Error(w, "forbidden", http.StatusForbidden)
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return
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}
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// If the request header doesn't include a challenge don't punish the client, just throw a 403
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pc := r.Header.Get(sessionChallenge)
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if pc == "" {
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http.Error(w, "forbidden", http.StatusForbidden)
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return
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}
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c, err := common.Decrypt(base58.Decode(pc), ps.ek)
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if err != nil {
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logger.Error("c, err := common.Decrypt(rc, ps.ek)", zap.Error(err))
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http.Error(w, "error", http.StatusInternalServerError)
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return
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}
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// If the challenge is not in the session store don't punish the client, just throw a 403
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challenge, ok := s.Values[sessionChallenge].([]byte)
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if !ok {
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http.Error(w, "forbidden", http.StatusForbidden)
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return
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}
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// Only if we have both a challenge in the session store and in the request header
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// do we entertain blocking the client. Because then we know someone is trying to be sneaky.
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if !bytes.Equal(c, challenge) {
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s.Values[sessionBlocked] = true
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err = s.Save(r, w)
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if err != nil {
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logger.Error("err = s.Save(r, w)", zap.Error(err))
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}
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http.Error(w, "forbidden", http.StatusForbidden)
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return
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}
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next.ServeHTTP(w, r)
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}
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}
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func handlePairingChallenge(ps *Server) http.HandlerFunc {
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logger := ps.GetLogger()
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return func(w http.ResponseWriter, r *http.Request) {
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s, err := ps.cookieStore.Get(r, sessionChallenge)
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if err != nil {
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logger.Error("ps.cookieStore.Get(r, pairingStoreChallenge)", zap.Error(err))
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return
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}
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var challenge []byte
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challenge, ok := s.Values[sessionChallenge].([]byte)
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if !ok {
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challenge = make([]byte, 64)
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_, err = rand.Read(challenge)
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if err != nil {
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logger.Error("_, err = rand.Read(auth)", zap.Error(err))
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return
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}
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s.Values[sessionChallenge] = challenge
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err = s.Save(r, w)
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if err != nil {
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logger.Error("err = s.Save(r, w)", zap.Error(err))
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return
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}
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}
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w.Header().Set("Content-Type", "application/octet-stream")
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_, err = w.Write(challenge)
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if err != nil {
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logger.Error("_, err = w.Write(challenge)", zap.Error(err))
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return
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}
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}
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}
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