Merge pull request #1988 from nspcc-dev/cli-permission

cli,compiler: allow to specify manifest permissions

cli/smartcontract/permission.go

@@ -0,0 +1,129 @@
+package smartcontract
+
+import (
+	"encoding/hex"
+	"errors"
+	"fmt"
+
+	"github.com/nspcc-dev/neo-go/pkg/crypto/keys"
+	"github.com/nspcc-dev/neo-go/pkg/smartcontract/manifest"
+	"github.com/nspcc-dev/neo-go/pkg/util"
+	"gopkg.in/yaml.v2"
+)
+
+type permission manifest.Permission
+
+const (
+	permHashKey   = "hash"
+	permGroupKey  = "group"
+	permMethodKey = "methods"
+)
+
+func (p permission) MarshalYAML() (interface{}, error) {
+	m := make(yaml.MapSlice, 0, 2)
+	switch p.Contract.Type {
+	case manifest.PermissionWildcard:
+	case manifest.PermissionHash:
+		m = append(m, yaml.MapItem{
+			Key:   permHashKey,
+			Value: p.Contract.Value.(util.Uint160).StringLE(),
+		})
+	case manifest.PermissionGroup:
+		bs := p.Contract.Value.(*keys.PublicKey).Bytes()
+		m = append(m, yaml.MapItem{
+			Key:   permGroupKey,
+			Value: hex.EncodeToString(bs),
+		})
+	default:
+		return nil, fmt.Errorf("invalid permission type: %d", p.Contract.Type)
+	}
+
+	var val interface{} = "*"
+	if !p.Methods.IsWildcard() {
+		val = p.Methods.Value
+	}
+
+	m = append(m, yaml.MapItem{
+		Key:   permMethodKey,
+		Value: val,
+	})
+	return m, nil
+}
+
+func (p *permission) UnmarshalYAML(unmarshal func(interface{}) error) error {
+	var m map[string]interface{}
+	if err := unmarshal(&m); err != nil {
+		return err
+	}
+
+	if err := p.fillType(m); err != nil {
+		return err
+	}
+
+	return p.fillMethods(m)
+}
+
+func (p *permission) fillType(m map[string]interface{}) error {
+	vh, ok1 := m[permHashKey]
+	vg, ok2 := m[permGroupKey]
+	switch {
+	case ok1 && ok2:
+		return errors.New("permission must have either 'hash' or 'group' field")
+	case ok1:
+		s, ok := vh.(string)
+		if !ok {
+			return errors.New("invalid 'hash' type")
+		}
+
+		u, err := util.Uint160DecodeStringLE(s)
+		if err != nil {
+			return err
+		}
+
+		p.Contract.Type = manifest.PermissionHash
+		p.Contract.Value = u
+	case ok2:
+		s, ok := vg.(string)
+		if !ok {
+			return errors.New("invalid 'hash' type")
+		}
+
+		pub, err := keys.NewPublicKeyFromString(s)
+		if err != nil {
+			return err
+		}
+
+		p.Contract.Type = manifest.PermissionGroup
+		p.Contract.Value = pub
+	default:
+		p.Contract.Type = manifest.PermissionWildcard
+	}
+	return nil
+}
+
+func (p *permission) fillMethods(m map[string]interface{}) error {
+	methods, ok := m[permMethodKey]
+	if !ok {
+		return errors.New("'methods' field is missing from permission")
+	}
+
+	switch mt := methods.(type) {
+	case string:
+		if mt == "*" {
+			p.Methods.Value = nil
+			return nil
+		}
+	case []interface{}:
+		ms := make([]string, len(mt))
+		for i := range mt {
+			ms[i], ok = mt[i].(string)
+			if !ok {
+				return errors.New("invalid permission method name")
+			}
+		}
+		p.Methods.Value = ms
+		return nil
+	default:
+	}
+	return errors.New("'methods' field is invalid")
+}

cli/smartcontract/smart_contract.go

@@ -401,6 +401,7 @@ func initSmartContract(ctx *cli.Context) error {
 				},
 			},
 		},
+		Permissions: []permission{permission(*manifest.NewPermission(manifest.PermissionWildcard))},
 	}
 	b, err := yaml.Marshal(m)
 	if err != nil {
@@ -450,6 +451,10 @@ func contractCompile(ctx *cli.Context) error {
 		o.Name = conf.Name
 		o.ContractEvents = conf.Events
 		o.ContractSupportedStandards = conf.SupportedStandards
+		o.Permissions = make([]manifest.Permission, len(conf.Permissions))
+		for i := range conf.Permissions {
+			o.Permissions[i] = manifest.Permission(conf.Permissions[i])
+		}
 		o.SafeMethods = conf.SafeMethods
 	}
 
@@ -674,6 +679,7 @@ type ProjectConfig struct {
 	SafeMethods        []string
 	SupportedStandards []string
 	Events             []manifest.Event
+	Permissions        []permission
 }
 
 func inspect(ctx *cli.Context) error {

cli/smartcontract/smart_contract_test.go

@@ -1,13 +1,18 @@
 package smartcontract
 
 import (
+	"encoding/hex"
 	"flag"
 	"io/ioutil"
 	"os"
 	"testing"
 
+	"github.com/nspcc-dev/neo-go/internal/random"
+	"github.com/nspcc-dev/neo-go/pkg/crypto/keys"
+	"github.com/nspcc-dev/neo-go/pkg/smartcontract/manifest"
 	"github.com/stretchr/testify/require"
 	"github.com/urfave/cli"
+	"gopkg.in/yaml.v2"
 )
 
 func TestInitSmartContract(t *testing.T) {
@@ -64,5 +69,73 @@ events:
   parameters:
   - name: args
     type: Array
+permissions:
+- methods: '*'
 `, string(manifest))
 }
+
+func testPermissionMarshal(t *testing.T, p *manifest.Permission, expected string) {
+	out, err := yaml.Marshal((*permission)(p))
+	require.NoError(t, err)
+	require.Equal(t, expected, string(out))
+
+	t.Run("Unmarshal", func(t *testing.T) {
+		actual := new(permission)
+		require.NoError(t, yaml.Unmarshal(out, actual))
+		require.Equal(t, p, (*manifest.Permission)(actual))
+	})
+}
+
+func TestPermissionMarshal(t *testing.T) {
+	t.Run("Wildcard", func(t *testing.T) {
+		p := manifest.NewPermission(manifest.PermissionWildcard)
+		testPermissionMarshal(t, p, "methods: '*'\n")
+	})
+	t.Run("no allowed methods", func(t *testing.T) {
+		p := manifest.NewPermission(manifest.PermissionWildcard)
+		p.Methods.Restrict()
+		testPermissionMarshal(t, p, "methods: []\n")
+	})
+	t.Run("hash", func(t *testing.T) {
+		h := random.Uint160()
+		p := manifest.NewPermission(manifest.PermissionHash, h)
+		testPermissionMarshal(t, p,
+			"hash: "+h.StringLE()+"\n"+
+				"methods: '*'\n")
+	})
+	t.Run("group with some methods", func(t *testing.T) {
+		priv, err := keys.NewPrivateKey()
+		require.NoError(t, err)
+
+		p := manifest.NewPermission(manifest.PermissionGroup, priv.PublicKey())
+		p.Methods.Add("abc")
+		p.Methods.Add("lamao")
+		testPermissionMarshal(t, p,
+			"group: "+hex.EncodeToString(priv.PublicKey().Bytes())+"\n"+
+				"methods:\n- abc\n- lamao\n")
+	})
+}
+
+func TestPermissionUnmarshalInvalid(t *testing.T) {
+	priv, err := keys.NewPrivateKey()
+	require.NoError(t, err)
+
+	pub := hex.EncodeToString(priv.PublicKey().Bytes())
+	u160 := random.Uint160().StringLE()
+	testCases := []string{
+		"hash: []\nmethods: '*'\n",                             // invalid hash type
+		"hash: notahex\nmethods: '*'\n",                        // invalid hash
+		"group: []\nmethods: '*'\n",                            // invalid group type
+		"group: notahex\nmethods: '*'\n",                       // invalid group
+		"hash: " + u160 + "\n",                                 // missing methods
+		"group: " + pub + "\nhash: " + u160 + "\nmethods: '*'", // hash/group conflict
+		"hash: " + u160 + "\nmethods:\n  a: b\n",               // invalid methods type
+		"hash: " + u160 + "\nmethods:\n- []\n",                 // methods array, invalid single
+	}
+
+	for _, tc := range testCases {
+		t.Run(tc, func(t *testing.T) {
+			require.Error(t, yaml.Unmarshal([]byte(tc), new(permission)))
+		})
+	}
+}

cli/testdata/deploy/neo-go.yml

@@ -1 +1,4 @@
 name: Test deploy
+permissions:
+  - hash: fffdc93764dbaddd97c48f252a53ea4643faa3fd
+    methods: ["update"]

examples/nft-nd-nns/nns.yml

@@ -13,3 +13,5 @@ events:
         type: Integer
       - name: tokenId
         type: ByteArray
+permissions:
+  - methods: ["onNEP11Transfer"]

examples/nft-nd/nft.yml

@@ -12,3 +12,5 @@ events:
         type: Integer
       - name: tokenId
         type: ByteArray
+permissions:
+  - methods: ["onNEP11Transfer"]

internal/testchain/transaction.go

@@ -16,6 +16,7 @@ import (
 	"github.com/nspcc-dev/neo-go/pkg/crypto/hash"
 	"github.com/nspcc-dev/neo-go/pkg/io"
 	"github.com/nspcc-dev/neo-go/pkg/smartcontract/callflag"
+	"github.com/nspcc-dev/neo-go/pkg/smartcontract/manifest"
 	"github.com/nspcc-dev/neo-go/pkg/smartcontract/nef"
 	"github.com/nspcc-dev/neo-go/pkg/util"
 	"github.com/nspcc-dev/neo-go/pkg/vm/emit"
@@ -78,6 +79,10 @@ func NewDeployTx(bc blockchainer.Blockchainer, name string, sender util.Uint160,
 		o.Name = conf.Name
 		o.ContractEvents = conf.Events
 		o.ContractSupportedStandards = conf.SupportedStandards
+		o.Permissions = make([]manifest.Permission, len(conf.Permissions))
+		for i := range conf.Permissions {
+			o.Permissions[i] = manifest.Permission(conf.Permissions[i])
+		}
 		o.SafeMethods = conf.SafeMethods
 	}
 	m, err := compiler.CreateManifest(di, o)

pkg/compiler/compiler.go

@@ -54,6 +54,9 @@ type Options struct {
 
 	// SafeMethods contains list of methods which will be marked as safe in manifest.
 	SafeMethods []string
+
+	// Permissions is a list of permissions for every contract method.
+	Permissions []manifest.Permission
 }
 
 type buildInfo struct {

pkg/compiler/debug.go

@@ -441,13 +441,6 @@ func (di *DebugInfo) ConvertToManifest(o *Options) (*manifest.Manifest, error) {
 	if result.ABI.Events == nil {
 		result.ABI.Events = make([]manifest.Event, 0)
 	}
-	result.Permissions = []manifest.Permission{
+	result.Permissions = o.Permissions
-		{
-			Contract: manifest.PermissionDesc{
-				Type: manifest.PermissionWildcard,
-			},
-			Methods: manifest.WildStrings{},
-		},
-	}
 	return result, nil
 }

pkg/compiler/debug_test.go

@@ -175,7 +175,14 @@ func _deploy(data interface{}, isUpdate bool) { x := 1; _ = x }
 	}
 
 	t.Run("convert to Manifest", func(t *testing.T) {
-		actual, err := d.ConvertToManifest(&Options{Name: "MyCTR", SafeMethods: []string{"methodInt", "methodString"}})
+		p := manifest.NewPermission(manifest.PermissionWildcard)
+		p.Methods.Add("randomMethod")
+
+		actual, err := d.ConvertToManifest(&Options{
+			Name:        "MyCTR",
+			SafeMethods: []string{"methodInt", "methodString"},
+			Permissions: []manifest.Permission{*p},
+		})
 		require.NoError(t, err)
 		expected := &manifest.Manifest{
 			Name: "MyCTR",
@@ -268,14 +275,7 @@ func _deploy(data interface{}, isUpdate bool) { x := 1; _ = x }
 				Events: []manifest.Event{},
 			},
 			Groups:      []manifest.Group{},
-			Permissions: []manifest.Permission{
+			Permissions: []manifest.Permission{*p},
-				{
-					Contract: manifest.PermissionDesc{
-						Type: manifest.PermissionWildcard,
-					},
-					Methods: manifest.WildStrings{},
-				},
-			},
 			Trusts: manifest.WildPermissionDescs{
 				Value: []manifest.PermissionDesc{},
 			},

pkg/compiler/interop_test.go

@@ -18,6 +18,7 @@ import (
 	"github.com/nspcc-dev/neo-go/pkg/encoding/address"
 	cinterop "github.com/nspcc-dev/neo-go/pkg/interop"
 	"github.com/nspcc-dev/neo-go/pkg/smartcontract/callflag"
+	"github.com/nspcc-dev/neo-go/pkg/smartcontract/manifest"
 	"github.com/nspcc-dev/neo-go/pkg/smartcontract/nef"
 	"github.com/nspcc-dev/neo-go/pkg/smartcontract/trigger"
 	"github.com/nspcc-dev/neo-go/pkg/util"
@@ -157,7 +158,12 @@ func TestAppCall(t *testing.T) {
 
 	inner, di, err := compiler.CompileWithDebugInfo("foo.go", strings.NewReader(srcInner))
 	require.NoError(t, err)
-	m, err := di.ConvertToManifest(&compiler.Options{Name: "Foo"})
+	m, err := di.ConvertToManifest(&compiler.Options{
+		Name: "Foo",
+		Permissions: []manifest.Permission{
+			*manifest.NewPermission(manifest.PermissionWildcard),
+		},
+	})
 	require.NoError(t, err)
 
 	ih := hash.Hash160(inner)