[#36] iam: Support iam actions

Signed-off-by: Denis Kirillov <d.kirillov@yadro.com>

iam/converter.go

@@ -56,6 +56,7 @@ const (
 	arnIAMPrefix     = "arn:aws:iam::"
 	s3ResourcePrefix = "arn:aws:s3:::"
 	s3ActionPrefix   = "s3:"
+	iamActionPrefix  = "iam:"
 )
 
 var (
@@ -277,19 +278,16 @@ func parseActionAsS3Action(action string) (string, error) {
 		return Wildcard, nil
 	}
 
-	if !strings.HasPrefix(action, s3ActionPrefix) {
+	if !strings.HasPrefix(action, s3ActionPrefix) && !strings.HasPrefix(action, iamActionPrefix) {
 		return "", ErrInvalidActionFormat
 	}
 
-	// iam arn format :s3:<action-name>
-	s3Action := strings.TrimPrefix(action, s3ActionPrefix)
-
-	index := strings.IndexByte(s3Action, Wildcard[0])
-	if index != -1 && index != utf8.RuneCountInString(s3Action)-1 {
+	index := strings.IndexByte(action, Wildcard[0])
+	if index != -1 && index != utf8.RuneCountInString(action)-1 {
 		return "", ErrInvalidActionFormat
 	}
 
-	return s3Action, nil
+	return action, nil
 }
 
 func splitGroupedConditions(groupedConditions []GroupedConditions) [][]chain.Condition {

iam/converter_native.go

@@ -3,6 +3,7 @@ package iam
 import (
 	"errors"
 	"fmt"
+	"strings"
 
 	"git.frostfs.info/TrueCloudLab/policy-engine/pkg/chain"
 	"git.frostfs.info/TrueCloudLab/policy-engine/schema/native"
@@ -22,11 +23,11 @@ var actionToOpMap = map[string][]string{
 }
 
 const (
-	supportedS3ActionDeleteObject = "DeleteObject"
-	supportedS3ActionGetObject    = "GetObject"
-	supportedS3ActionHeadObject   = "HeadObject"
-	supportedS3ActionPutObject    = "PutObject"
-	supportedS3ActionListBucket   = "ListBucket"
+	supportedS3ActionDeleteObject = "s3:DeleteObject"
+	supportedS3ActionGetObject    = "s3:GetObject"
+	supportedS3ActionHeadObject   = "s3:HeadObject"
+	supportedS3ActionPutObject    = "s3:PutObject"
+	supportedS3ActionListBucket   = "s3:ListBucket"
 )
 
 type NativeResolver interface {
@@ -237,7 +238,7 @@ func formNativeActionNames(names []string) ([]string, error) {
 		if err != nil {
 			return nil, err
 		}
-		if action == Wildcard {
+		if action == Wildcard || strings.TrimPrefix(action, s3ActionPrefix) == Wildcard {
 			return []string{Wildcard}, nil
 		}
 		res = append(res, actionToOpMap[action]...)

iam/converter_test.go

@@ -70,7 +70,7 @@ func TestConverters(t *testing.T) {
 	bktName := "DOC-EXAMPLE-BUCKET"
 	objName := "object-name"
 	resource := bktName + "/*"
-	action := "PutObject"
+	s3action := "s3:PutObject"
 
 	mockResolver := newMockUserResolver([]string{user}, []string{bktName})
 
@@ -95,7 +95,7 @@ func TestConverters(t *testing.T) {
 		expected := &chain.Chain{Rules: []chain.Rule{
 			{
 				Status:    chain.Allow,
-				Actions:   chain.Actions{Names: []string{action}},
+				Actions:   chain.Actions{Names: []string{s3action}},
 				Resources: chain.Resources{Names: []string{resource}},
 				Condition: []chain.Condition{
 					{
@@ -135,7 +135,7 @@ func TestConverters(t *testing.T) {
 		expected := &chain.Chain{Rules: []chain.Rule{
 			{
 				Status:    chain.Allow,
-				Actions:   chain.Actions{Names: []string{action}},
+				Actions:   chain.Actions{Names: []string{native.MethodPutObject}},
 				Resources: chain.Resources{Names: []string{fmt.Sprintf(native.ResourceFormatRootContainerObjects, mockResolver.buckets[bktName])}},
 				Condition: []chain.Condition{
 					{
@@ -169,7 +169,7 @@ func TestConverters(t *testing.T) {
 		expected := &chain.Chain{Rules: []chain.Rule{
 			{
 				Status:    chain.AccessDenied,
-				Actions:   chain.Actions{Inverted: true, Names: []string{action}},
+				Actions:   chain.Actions{Inverted: true, Names: []string{s3action}},
 				Resources: chain.Resources{Inverted: true, Names: []string{resource}},
 				Condition: []chain.Condition{
 					{
@@ -203,7 +203,7 @@ func TestConverters(t *testing.T) {
 		expected := &chain.Chain{Rules: []chain.Rule{
 			{
 				Status:  chain.AccessDenied,
-				Actions: chain.Actions{Inverted: true, Names: actionToOpMap["GetObject"]},
+				Actions: chain.Actions{Inverted: true, Names: actionToOpMap["s3:GetObject"]},
 				Resources: chain.Resources{Inverted: true, Names: []string{
 					fmt.Sprintf(native.ResourceFormatRootContainerObjects, mockResolver.buckets[bktName]),
 				}},
@@ -278,6 +278,49 @@ func TestConverters(t *testing.T) {
 		_, err := ConvertToNativeChain(p, mockResolver)
 		require.Error(t, err)
 	})
+
+	t.Run("valid mixed iam/s3 actions", func(t *testing.T) {
+		p := Policy{
+			Statement: []Statement{{
+				Principal: map[PrincipalType][]string{AWSPrincipalType: {principal}},
+				Effect:    AllowEffect,
+				Action:    []string{"s3:PutObject", "iam:*"},
+				Resource:  []string{"*"},
+			}},
+		}
+
+		s3Expected := &chain.Chain{Rules: []chain.Rule{{
+			Status:    chain.Allow,
+			Actions:   chain.Actions{Names: []string{"s3:PutObject", "iam:*"}},
+			Resources: chain.Resources{Names: []string{"*"}},
+			Condition: []chain.Condition{{
+				Op:     chain.CondStringEquals,
+				Object: chain.ObjectRequest,
+				Key:    s3.PropertyKeyOwner,
+				Value:  mockResolver.users[user],
+			}},
+		}}}
+
+		s3Chain, err := ConvertToS3Chain(p, mockResolver)
+		require.NoError(t, err)
+		require.Equal(t, s3Expected, s3Chain)
+
+		nativeExpected := &chain.Chain{Rules: []chain.Rule{{
+			Status:    chain.Allow,
+			Actions:   chain.Actions{Names: []string{native.MethodPutObject}},
+			Resources: chain.Resources{Names: []string{native.ResourceFormatAllObjects}},
+			Condition: []chain.Condition{{
+				Op:     chain.CondStringEquals,
+				Object: chain.ObjectRequest,
+				Key:    native.PropertyKeyActorPublicKey,
+				Value:  mockResolver.users[user],
+			}},
+		}}}
+
+		nativeChain, err := ConvertToNativeChain(p, mockResolver)
+		require.NoError(t, err)
+		require.Equal(t, nativeExpected, nativeChain)
+	})
 }
 
 func TestConvertToChainCondition(t *testing.T) {
@@ -566,7 +609,7 @@ func TestComplexNativeConditions(t *testing.T) {
 	}
 
 	expectedStatus := chain.AccessDenied
-	expectedActions := chain.Actions{Names: actionToOpMap[action]}
+	expectedActions := chain.Actions{Names: actionToOpMap["s3:"+action]}
 	expectedResource1 := chain.Resources{Names: []string{nativeResource1}}
 	expectedResource23 := chain.Resources{Names: []string{nativeResource2, nativeResource3}}
 
@@ -852,7 +895,7 @@ func TestComplexS3Conditions(t *testing.T) {
 	resource1 := bktName1 + "/" + objName1
 	resource2 := bktName2 + "/*"
 	resource3 := bktName3 + "/*"
-	action := "PutObject"
+	action := "s3:PutObject"
 
 	key1, key2 := "key1", "key2"
 	val0, val1, val2 := "val0", "val1", "val2"
@@ -866,7 +909,7 @@ func TestComplexS3Conditions(t *testing.T) {
 				AWSPrincipalType: {principal1, principal2},
 			},
 			Effect:   DenyEffect,
-			Action:   []string{"s3:" + action},
+			Action:   []string{action},
 			Resource: []string{"arn:aws:s3:::" + resource1, "arn:aws:s3:::" + resource2, "arn:aws:s3:::" + resource3},
 			Conditions: map[string]Condition{
 				CondStringEquals: {key1: {val0, val1}},
@@ -876,7 +919,7 @@ func TestComplexS3Conditions(t *testing.T) {
 	}
 
 	expectedStatus := chain.AccessDenied
-	expectedActions := chain.Actions{Names: actionToOpMap[action]}
+	expectedActions := chain.Actions{Names: []string{action}}
 	expectedResources := chain.Resources{Names: []string{resource1, resource2, resource3}}
 
 	user1Condition := chain.Condition{Op: chain.CondStringEquals, Object: chain.ObjectRequest, Key: s3.PropertyKeyOwner, Value: mockResolver.users[user1]}
@@ -1105,19 +1148,19 @@ func TestS3BucketResource(t *testing.T) {
 	require.NoError(t, err)
 
 	// check we match just "bucket1" resource
-	req := testutil.NewRequest("HeadBucket", testutil.NewResource(bktName1, nil), nil)
+	req := testutil.NewRequest("s3:HeadBucket", testutil.NewResource(bktName1, nil), nil)
 	status, _, err := s.IsAllowed(chainName, engine.NewRequestTargetWithNamespace(namespace), req)
 	require.NoError(t, err)
 	require.Equal(t, chain.AccessDenied.String(), status.String())
 
 	// check we match just "bucket2" resource
-	req = testutil.NewRequest("HeadBucket", testutil.NewResource(bktName2, nil), nil)
+	req = testutil.NewRequest("s3:HeadBucket", testutil.NewResource(bktName2, nil), nil)
 	status, _, err = s.IsAllowed(chainName, engine.NewRequestTargetWithNamespace(namespace), req)
 	require.NoError(t, err)
 	require.Equal(t, chain.Allow.String(), status.String())
 
 	// check we also match "bucket2/object" resource
-	req = testutil.NewRequest("PutObject", testutil.NewResource(bktName2+"/object", nil), nil)
+	req = testutil.NewRequest("s3:PutObject", testutil.NewResource(bktName2+"/object", nil), nil)
 	status, _, err = s.IsAllowed(chainName, engine.NewRequestTargetWithNamespace(namespace), req)
 	require.NoError(t, err)
 	require.Equal(t, chain.Allow.String(), status.String())
@@ -1159,20 +1202,27 @@ func TestActionParsing(t *testing.T) {
 		},
 		{
 			action:   "s3:PutObject",
-			expected: "PutObject",
+			expected: "s3:PutObject",
 		},
 		{
 			action:   "s3:Put*",
-			expected: "Put*",
+			expected: "s3:Put*",
 		},
 		{
 			action:   "s3:*",
-			expected: "*",
+			expected: "s3:*",
 		},
 		{
-			action: "s3:",
-
-			expected: "",
+			action:   "s3:",
+			expected: "s3:",
+		},
+		{
+			action:   "iam:ListAccessKeys",
+			expected: "iam:ListAccessKeys",
+		},
+		{
+			action:   "iam:*",
+			expected: "iam:*",
 		},
 	} {
 		t.Run("", func(t *testing.T) {