146 lines
3.4 KiB
Go
146 lines
3.4 KiB
Go
// Copyright (C) 2018 Storj Labs, Inc.
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// See LICENSE for copying information.
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package server
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import (
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"crypto"
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"crypto/ecdsa"
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"log"
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"os"
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"path/filepath"
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"github.com/gtank/cryptopasta"
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"github.com/zeebo/errs"
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"golang.org/x/net/context"
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"gopkg.in/spacemonkeygo/monkit.v2"
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"storj.io/storj/pkg/peertls"
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pstore "storj.io/storj/pkg/piecestore"
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"storj.io/storj/pkg/piecestore/rpc/server/psdb"
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"storj.io/storj/pkg/provider"
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pb "storj.io/storj/protos/piecestore"
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)
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var (
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mon = monkit.Package()
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// ServerError wraps errors returned from Server struct methods
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ServerError = errs.Class("PSServer error")
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)
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// Config contains everything necessary for a server
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type Config struct {
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Path string `help:"path to store data in" default:"$CONFDIR"`
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}
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// Run implements provider.Responsibility
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func (c Config) Run(ctx context.Context, server *provider.Provider) (err error) {
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defer mon.Task()(&ctx)(&err)
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s, err := Initialize(ctx, c, server.Identity().Key)
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if err != nil {
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return err
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}
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pb.RegisterPieceStoreRoutesServer(server.GRPC(), s)
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defer func() {
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log.Fatal(s.Stop(ctx))
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}()
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return server.Run(ctx)
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}
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// Server -- GRPC server meta data used in route calls
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type Server struct {
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DataDir string
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DB *psdb.DB
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pkey crypto.PrivateKey
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}
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// Initialize -- initializes a server struct
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func Initialize(ctx context.Context, config Config, pkey crypto.PrivateKey) (*Server, error) {
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dbPath := filepath.Join(config.Path, "piecestore.db")
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dataDir := filepath.Join(config.Path, "piece-store-data")
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db, err := psdb.Open(ctx, dataDir, dbPath)
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if err != nil {
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return nil, err
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}
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return &Server{DataDir: dataDir, DB: db, pkey: pkey}, nil
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}
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// Stop the piececstore node
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func (s *Server) Stop(ctx context.Context) (err error) {
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return s.DB.Close()
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}
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// Piece -- Send meta data about a stored by by Id
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func (s *Server) Piece(ctx context.Context, in *pb.PieceId) (*pb.PieceSummary, error) {
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log.Printf("Getting Meta for %s...", in.Id)
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path, err := pstore.PathByID(in.GetId(), s.DataDir)
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if err != nil {
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return nil, err
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}
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fileInfo, err := os.Stat(path)
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if err != nil {
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return nil, err
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}
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// Read database to calculate expiration
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ttl, err := s.DB.GetTTLByID(in.GetId())
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if err != nil {
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return nil, err
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}
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log.Printf("Successfully retrieved meta for %s.", in.Id)
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return &pb.PieceSummary{Id: in.GetId(), Size: fileInfo.Size(), ExpirationUnixSec: ttl}, nil
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}
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// Delete -- Delete data by Id from piecestore
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func (s *Server) Delete(ctx context.Context, in *pb.PieceDelete) (*pb.PieceDeleteSummary, error) {
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log.Printf("Deleting %s...", in.Id)
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if err := s.deleteByID(in.GetId()); err != nil {
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return nil, err
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}
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log.Printf("Successfully deleted %s.", in.Id)
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return &pb.PieceDeleteSummary{Message: OK}, nil
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}
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func (s *Server) deleteByID(id string) error {
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if err := pstore.Delete(id, s.DataDir); err != nil {
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return err
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}
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if err := s.DB.DeleteTTLByID(id); err != nil {
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return err
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}
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log.Printf("Deleted data of id (%s) from piecestore\n", id)
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return nil
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}
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func (s *Server) verifySignature(ctx context.Context, ba *pb.RenterBandwidthAllocation) error {
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pi, err := provider.PeerIdentityFromContext(ctx)
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if err != nil {
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return err
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}
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k, ok := pi.Leaf.PublicKey.(*ecdsa.PublicKey)
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if !ok {
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return peertls.ErrUnsupportedKey.New("%T", pi.Leaf.PublicKey)
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}
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if ok := cryptopasta.Verify(ba.GetData(), ba.GetSignature(), k); !ok {
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return ServerError.New("Failed to verify Signature")
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}
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return nil
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}
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