metainfo: add project info rpc for getting a project salt using an api key (#2311)

The API exposed in #2302 needs to be able to get a project-level salt (https://github.com/storj/storj/pull/2302/files#diff-72b734f4a2e408a544fef071d2565fc8R200), see https://github.com/storj/storj/blob/master/docs/design/password-key-derivation.md also

I realized this morning that if we need it later this week, we need to get it into today's release.

Please describe the tests: tests will come as part of #2302

Please describe the performance impact: none

pkg/macaroon/apikey.go

@@ -33,16 +33,19 @@ var (
 type ActionType int
 
 const (
-	_ ActionType = iota // ActionType zero value
+	// not using iota because these values are persisted in macaroons
+	_ ActionType = 0
 
 	// ActionRead specifies a read operation
-	ActionRead
+	ActionRead ActionType = 1
 	// ActionWrite specifies a read operation
-	ActionWrite
+	ActionWrite ActionType = 2
 	// ActionList specifies a read operation
-	ActionList
+	ActionList ActionType = 3
 	// ActionDelete specifies a read operation
-	ActionDelete
+	ActionDelete ActionType = 4
+	// ActionProjectInfo requests project-level information
+	ActionProjectInfo ActionType = 5
 )
 
 // Action specifies the specific operation being performed that the Macaroon will validate
@@ -165,6 +168,8 @@ func (c *Caveat) Allows(action Action) bool {
 		if c.DisallowDeletes {
 			return false
 		}
+	case ActionProjectInfo:
+		// allow
 	default:
 		return false
 	}

pkg/pb/metainfo.pb.go

@@ -841,6 +841,74 @@ func (m *SetAttributionResponse) XXX_DiscardUnknown() {
 
 var xxx_messageInfo_SetAttributionResponse proto.InternalMessageInfo
 
+type ProjectInfoRequest struct {
+	XXX_NoUnkeyedLiteral struct{} `json:"-"`
+	XXX_unrecognized     []byte   `json:"-"`
+	XXX_sizecache        int32    `json:"-"`
+}
+
+func (m *ProjectInfoRequest) Reset()         { *m = ProjectInfoRequest{} }
+func (m *ProjectInfoRequest) String() string { return proto.CompactTextString(m) }
+func (*ProjectInfoRequest) ProtoMessage()    {}
+func (*ProjectInfoRequest) Descriptor() ([]byte, []int) {
+	return fileDescriptor_631e2f30a93cd64e, []int{15}
+}
+func (m *ProjectInfoRequest) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_ProjectInfoRequest.Unmarshal(m, b)
+}
+func (m *ProjectInfoRequest) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_ProjectInfoRequest.Marshal(b, m, deterministic)
+}
+func (m *ProjectInfoRequest) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_ProjectInfoRequest.Merge(m, src)
+}
+func (m *ProjectInfoRequest) XXX_Size() int {
+	return xxx_messageInfo_ProjectInfoRequest.Size(m)
+}
+func (m *ProjectInfoRequest) XXX_DiscardUnknown() {
+	xxx_messageInfo_ProjectInfoRequest.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_ProjectInfoRequest proto.InternalMessageInfo
+
+type ProjectInfoResponse struct {
+	ProjectSalt          []byte   `protobuf:"bytes,1,opt,name=project_salt,json=projectSalt,proto3" json:"project_salt,omitempty"`
+	XXX_NoUnkeyedLiteral struct{} `json:"-"`
+	XXX_unrecognized     []byte   `json:"-"`
+	XXX_sizecache        int32    `json:"-"`
+}
+
+func (m *ProjectInfoResponse) Reset()         { *m = ProjectInfoResponse{} }
+func (m *ProjectInfoResponse) String() string { return proto.CompactTextString(m) }
+func (*ProjectInfoResponse) ProtoMessage()    {}
+func (*ProjectInfoResponse) Descriptor() ([]byte, []int) {
+	return fileDescriptor_631e2f30a93cd64e, []int{16}
+}
+func (m *ProjectInfoResponse) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_ProjectInfoResponse.Unmarshal(m, b)
+}
+func (m *ProjectInfoResponse) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_ProjectInfoResponse.Marshal(b, m, deterministic)
+}
+func (m *ProjectInfoResponse) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_ProjectInfoResponse.Merge(m, src)
+}
+func (m *ProjectInfoResponse) XXX_Size() int {
+	return xxx_messageInfo_ProjectInfoResponse.Size(m)
+}
+func (m *ProjectInfoResponse) XXX_DiscardUnknown() {
+	xxx_messageInfo_ProjectInfoResponse.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_ProjectInfoResponse proto.InternalMessageInfo
+
+func (m *ProjectInfoResponse) GetProjectSalt() []byte {
+	if m != nil {
+		return m.ProjectSalt
+	}
+	return nil
+}
+
 func init() {
 	proto.RegisterType((*AddressedOrderLimit)(nil), "metainfo.AddressedOrderLimit")
 	proto.RegisterType((*SegmentWriteRequest)(nil), "metainfo.SegmentWriteRequest")
@@ -858,70 +926,75 @@ func init() {
 	proto.RegisterType((*ListSegmentsResponse_Item)(nil), "metainfo.ListSegmentsResponse.Item")
 	proto.RegisterType((*SetAttributionRequest)(nil), "metainfo.SetAttributionRequest")
 	proto.RegisterType((*SetAttributionResponse)(nil), "metainfo.SetAttributionResponse")
+	proto.RegisterType((*ProjectInfoRequest)(nil), "metainfo.ProjectInfoRequest")
+	proto.RegisterType((*ProjectInfoResponse)(nil), "metainfo.ProjectInfoResponse")
 }
 
 func init() { proto.RegisterFile("metainfo.proto", fileDescriptor_631e2f30a93cd64e) }
 
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-	0x2b, 0x63, 0x87, 0xcf, 0xf5, 0x30, 0xa8, 0x13, 0xa5, 0x04, 0x1b, 0x4c, 0xf5, 0xee, 0x2e, 0xa4,
+	0x26, 0xfb, 0xda, 0xf6, 0x9f, 0x65, 0xcb, 0xa0, 0x4e, 0x95, 0x12, 0x6c, 0x38, 0xcb, 0xb4, 0x3b,
-	0xea, 0x42, 0xcb, 0x8a, 0x13, 0x67, 0x34, 0x45, 0x97, 0x1e, 0xac, 0xeb, 0x92, 0xa6, 0xa8, 0x79,
+	0xa7, 0xaa, 0x03, 0x75, 0x43, 0x4e, 0x98, 0xd0, 0x18, 0x6d, 0x79, 0x30, 0xae, 0x2b, 0x1a, 0x63,
-	0xca, 0xa9, 0x50, 0x19, 0x8a, 0xd9, 0xf6, 0x8d, 0x9a, 0xce, 0x73, 0x91, 0x84, 0xbe, 0x5e, 0x2c,
+	0x86, 0x53, 0x4a, 0x85, 0x4a, 0x50, 0xcc, 0xd5, 0x37, 0xa8, 0x59, 0xcf, 0x65, 0xe4, 0xbb, 0x99,
-	0x8b, 0x81, 0x6d, 0xe7, 0xc7, 0x7f, 0xd4, 0x60, 0xfb, 0x99, 0xe3, 0x86, 0x5c, 0xc2, 0xce, 0x99,
+	0xb0, 0x2c, 0x27, 0x36, 0x93, 0xfb, 0x6d, 0x20, 0x7d, 0xc1, 0x7f, 0xc2, 0x51, 0xf1, 0xe7, 0xe7,
-	0x40, 0xaa, 0xd0, 0x11, 0x44, 0x4a, 0xa3, 0xb6, 0xe2, 0x57, 0x35, 0xf8, 0x68, 0xdd, 0xb1, 0x53,
+	0x7f, 0x06, 0xad, 0x25, 0xaf, 0x45, 0xf5, 0x3e, 0x34, 0x52, 0xe3, 0x0e, 0x25, 0x9d, 0xe6, 0x7b,
-	0xe1, 0x0a, 0x76, 0xec, 0x3e, 0x2c, 0xe2, 0x2d, 0x5f, 0x58, 0xd8, 0xfc, 0x41, 0x77, 0xed, 0xb9,
+	0x53, 0xb7, 0xbe, 0x01, 0x9d, 0xaa, 0x93, 0x3f, 0x2a, 0xb0, 0xf7, 0xd4, 0x62, 0x4d, 0xae, 0x60,
-	0x8b, 0xf8, 0x0d, 0xb4, 0x4a, 0x2f, 0x9a, 0x3c, 0x58, 0xc2, 0x97, 0x96, 0x48, 0x70, 0xb8, 0xe6,
+	0xff, 0x5c, 0x20, 0x55, 0x68, 0x01, 0x27, 0x85, 0xd5, 0x5d, 0xf3, 0x95, 0xf6, 0x3e, 0xda, 0x74,
-	0xd4, 0xc5, 0xfa, 0x1e, 0x3a, 0xc5, 0x16, 0x2c, 0xea, 0xeb, 0x2d, 0xdd, 0xb8, 0xb5, 0x88, 0x83,
+	0x6d, 0xeb, 0xf7, 0x61, 0xdf, 0xe8, 0x6b, 0x9e, 0x6f, 0xf5, 0xc1, 0xd2, 0x97, 0xc4, 0xeb, 0x6c,
-	0x8f, 0xff, 0x05, 0x31, 0xef, 0xda, 0xbe, 0xe5, 0xf5, 0x5d, 0x2f, 0x6c, 0x92, 0x15, 0x5d, 0xdf,
+	0xbc, 0xb7, 0x19, 0xbf, 0x81, 0x7a, 0x41, 0x21, 0xc8, 0xbd, 0x95, 0xf8, 0x02, 0x2a, 0xde, 0xd1,
-	0xda, 0x05, 0xcf, 0xa0, 0x5d, 0x1e, 0xdb, 0xb2, 0x2c, 0x2b, 0x1e, 0x76, 0x59, 0x96, 0x95, 0x8f,
+	0x86, 0x5b, 0x9b, 0xeb, 0x7b, 0x68, 0xe6, 0xaa, 0x9a, 0xf7, 0xd7, 0x5d, 0x79, 0x71, 0x43, 0xd8,
-	0xe3, 0x1a, 0x76, 0x17, 0xa7, 0x81, 0x2c, 0x54, 0xb0, 0x62, 0x00, 0x83, 0xde, 0x7a, 0x80, 0x0d,
+	0xbd, 0xfb, 0xff, 0x11, 0xb1, 0x98, 0xda, 0x68, 0xc3, 0xe6, 0xa9, 0x97, 0x94, 0x69, 0xcd, 0xd4,
-	0x7a, 0x5a, 0x7b, 0x51, 0xc9, 0x07, 0x83, 0x2d, 0xf3, 0x5f, 0xe4, 0xd1, 0x3f, 0x01, 0x00, 0x00,
+	0x37, 0xb4, 0xe5, 0x29, 0x34, 0x8a, 0x3f, 0x83, 0x22, 0x2d, 0x6b, 0x84, 0xa2, 0x48, 0xcb, 0xda,
-	0xff, 0xff, 0x5a, 0x2a, 0xfb, 0x35, 0x82, 0x0a, 0x00, 0x00,
+	0x1f, 0xdb, 0x00, 0x0e, 0x96, 0xb7, 0x8b, 0x2c, 0x75, 0xb0, 0x66, 0xa1, 0xbd, 0xee, 0xe6, 0x80,
+	0x05, 0x33, 0x85, 0x15, 0x2c, 0x32, 0xb3, 0xba, 0xaf, 0x45, 0x66, 0xd6, 0xec, 0xed, 0xd9, 0xce,
+	0xf3, 0x52, 0x3a, 0x1c, 0xee, 0xea, 0xff, 0x49, 0x0f, 0xff, 0x0d, 0x00, 0x00, 0xff, 0xff, 0x14,
+	0x86, 0xb1, 0x2d, 0x1e, 0x0b, 0x00, 0x00,
 }
 
 // Reference imports to suppress errors if they are not otherwise used.
@@ -943,6 +1016,7 @@ type MetainfoClient interface {
 	DeleteSegment(ctx context.Context, in *SegmentDeleteRequest, opts ...grpc.CallOption) (*SegmentDeleteResponse, error)
 	ListSegments(ctx context.Context, in *ListSegmentsRequest, opts ...grpc.CallOption) (*ListSegmentsResponse, error)
 	SetAttribution(ctx context.Context, in *SetAttributionRequest, opts ...grpc.CallOption) (*SetAttributionResponse, error)
+	ProjectInfo(ctx context.Context, in *ProjectInfoRequest, opts ...grpc.CallOption) (*ProjectInfoResponse, error)
 }
 
 type metainfoClient struct {
@@ -1016,6 +1090,15 @@ func (c *metainfoClient) SetAttribution(ctx context.Context, in *SetAttributionR
 	return out, nil
 }
 
+func (c *metainfoClient) ProjectInfo(ctx context.Context, in *ProjectInfoRequest, opts ...grpc.CallOption) (*ProjectInfoResponse, error) {
+	out := new(ProjectInfoResponse)
+	err := c.cc.Invoke(ctx, "/metainfo.Metainfo/ProjectInfo", in, out, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
 // MetainfoServer is the server API for Metainfo service.
 type MetainfoServer interface {
 	CreateSegment(context.Context, *SegmentWriteRequest) (*SegmentWriteResponse, error)
@@ -1025,6 +1108,7 @@ type MetainfoServer interface {
 	DeleteSegment(context.Context, *SegmentDeleteRequest) (*SegmentDeleteResponse, error)
 	ListSegments(context.Context, *ListSegmentsRequest) (*ListSegmentsResponse, error)
 	SetAttribution(context.Context, *SetAttributionRequest) (*SetAttributionResponse, error)
+	ProjectInfo(context.Context, *ProjectInfoRequest) (*ProjectInfoResponse, error)
 }
 
 func RegisterMetainfoServer(s *grpc.Server, srv MetainfoServer) {
@@ -1157,6 +1241,24 @@ func _Metainfo_SetAttribution_Handler(srv interface{}, ctx context.Context, dec
 	return interceptor(ctx, in, info, handler)
 }
 
+func _Metainfo_ProjectInfo_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(ProjectInfoRequest)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(MetainfoServer).ProjectInfo(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: "/metainfo.Metainfo/ProjectInfo",
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(MetainfoServer).ProjectInfo(ctx, req.(*ProjectInfoRequest))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
 var _Metainfo_serviceDesc = grpc.ServiceDesc{
 	ServiceName: "metainfo.Metainfo",
 	HandlerType: (*MetainfoServer)(nil),
@@ -1189,6 +1291,10 @@ var _Metainfo_serviceDesc = grpc.ServiceDesc{
 			MethodName: "SetAttribution",
 			Handler:    _Metainfo_SetAttribution_Handler,
 		},
+		{
+			MethodName: "ProjectInfo",
+			Handler:    _Metainfo_ProjectInfo_Handler,
+		},
 	},
 	Streams:  []grpc.StreamDesc{},
 	Metadata: "metainfo.proto",

pkg/pb/metainfo.proto

@@ -21,6 +21,7 @@ service Metainfo {
     rpc DeleteSegment(SegmentDeleteRequest) returns (SegmentDeleteResponse);
     rpc ListSegments(ListSegmentsRequest) returns (ListSegmentsResponse);
     rpc SetAttribution(SetAttributionRequest) returns (SetAttributionResponse);
+    rpc ProjectInfo(ProjectInfoRequest) returns (ProjectInfoResponse);
 }
 
 message AddressedOrderLimit {
@@ -55,7 +56,7 @@ message SegmentCommitResponse {
 }
 
 message SegmentDownloadRequest {
-    bytes bucket = 1; 
+    bytes bucket = 1;
     bytes path = 2;
     int64 segment = 3;
 }
@@ -66,7 +67,7 @@ message SegmentDownloadResponse {
 }
 
 message SegmentInfoRequest {
-    bytes bucket = 1; 
+    bytes bucket = 1;
     bytes path = 2;
     int64 segment = 3;
 }
@@ -101,7 +102,7 @@ message ListSegmentsResponse {
         pointerdb.Pointer pointer = 2;
         bool is_prefix = 3;
     }
-      
+
     repeated Item items = 1;
     bool more = 2;
 }
@@ -112,4 +113,11 @@ message SetAttributionRequest{
 }
 
 message SetAttributionResponse {
-}
+}
+
+message ProjectInfoRequest {
+}
+
+message ProjectInfoResponse {
+    bytes project_salt = 1;
+}

proto.lock

@@ -1789,6 +1789,19 @@
           },
           {
             "name": "SetAttributionResponse"
+          },
+          {
+            "name": "ProjectInfoRequest"
+          },
+          {
+            "name": "ProjectInfoResponse",
+            "fields": [
+              {
+                "id": 1,
+                "name": "project_salt",
+                "type": "bytes"
+              }
+            ]
           }
         ],
         "services": [
@@ -1829,6 +1842,11 @@
                 "name": "SetAttribution",
                 "in_type": "SetAttributionRequest",
                 "out_type": "SetAttributionResponse"
+              },
+              {
+                "name": "ProjectInfo",
+                "in_type": "ProjectInfoRequest",
+                "out_type": "ProjectInfoResponse"
               }
             ]
           }

satellite/metainfo/metainfo.go

@@ -5,6 +5,7 @@ package metainfo
 
 import (
 	"context"
+	"crypto/sha256"
 	"errors"
 	"strconv"
 	"time"
@@ -579,3 +580,22 @@ func bytesToUUID(data []byte) (uuid.UUID, error) {
 
 	return id, nil
 }
+
+// ProjectInfo returns allowed ProjectInfo for the provided API key
+func (endpoint *Endpoint) ProjectInfo(ctx context.Context, req *pb.ProjectInfoRequest) (_ *pb.ProjectInfoResponse, err error) {
+	defer mon.Task()(&ctx)(&err)
+
+	keyInfo, err := endpoint.validateAuth(ctx, macaroon.Action{
+		Op:   macaroon.ActionProjectInfo,
+		Time: time.Now(),
+	})
+	if err != nil {
+		return nil, status.Errorf(codes.Unauthenticated, err.Error())
+	}
+
+	salt := sha256.Sum256(keyInfo.ProjectID[:])
+
+	return &pb.ProjectInfoResponse{
+		ProjectSalt: salt[:],
+	}, nil
+}