[#740] Fix forming policy by ast

Signed-off-by: Denis Kirillov <denis@nspcc.ru>
This commit is contained in:
Denis Kirillov 2022-11-09 17:25:02 +03:00 committed by Alex Vanin
parent 459a848c84
commit 80fc3b4ac3
2 changed files with 74 additions and 7 deletions

View file

@ -1001,6 +1001,10 @@ func policyToAst(bktPolicy *bucketPolicy) (*ast, error) {
trimmedResource := strings.TrimPrefix(resource, arnAwsPrefix)
r, ok := rr[trimmedResource]
if !ok {
if !strings.HasPrefix(trimmedResource, bktPolicy.Bucket) {
return nil, fmt.Errorf("resource '%s' must be in the same bucket '%s'", trimmedResource, bktPolicy.Bucket)
}
r = &astResource{
resourceInfo: resourceInfoFromName(trimmedResource, bktPolicy.Bucket),
}
@ -1046,9 +1050,6 @@ func astToPolicy(ast *ast) *bucketPolicy {
bktPolicy := &bucketPolicy{}
for _, resource := range ast.Resources {
if len(resource.Version) == 0 {
continue
}
allowed, denied := triageOperations(resource.Operations)
handleResourceOperations(bktPolicy, allowed, eacl.ActionAllow, resource.Name())
handleResourceOperations(bktPolicy, denied, eacl.ActionDeny, resource.Name())
@ -1080,7 +1081,7 @@ func handleResourceOperations(bktPolicy *bucketPolicy, list []*astOperation, eac
for action, ops := range actionToOpMap {
for _, op := range ops {
if !contains(userOps, op) {
break LOOP
continue LOOP
}
}
actions = append(actions, action)

View file

@ -1,11 +1,13 @@
package handler
import (
"bytes"
"context"
"crypto/ecdsa"
"crypto/rand"
"crypto/sha256"
"encoding/hex"
"encoding/json"
"fmt"
"io"
"net/http"
@ -1297,7 +1299,7 @@ func TestPutBucketACL(t *testing.T) {
tc := prepareHandlerContext(t)
bktName := "bucket-for-acl"
box := createAccessBox(t)
box, _ := createAccessBox(t)
bktInfo := createBucket(t, tc, bktName, box)
header := map[string]string{api.AmzACL: "public-read"}
@ -1308,6 +1310,70 @@ func TestPutBucketACL(t *testing.T) {
checkLastRecords(t, tc, bktInfo, eacl.ActionDeny)
}
func TestBucketPolicy(t *testing.T) {
hc := prepareHandlerContext(t)
bktName := "bucket-for-policy"
box, key := createAccessBox(t)
createBucket(t, hc, bktName, box)
bktPolicy := getBucketPolicy(hc, bktName)
for _, st := range bktPolicy.Statement {
if st.Effect == "Allow" {
require.Equal(t, hex.EncodeToString(key.PublicKey().Bytes()), st.Principal.CanonicalUser)
require.Equal(t, []string{arnAwsPrefix + bktName}, st.Resource)
} else {
require.Equal(t, allUsersWildcard, st.Principal.AWS)
require.Equal(t, "Deny", st.Effect)
require.Equal(t, []string{arnAwsPrefix + bktName}, st.Resource)
}
}
newPolicy := &bucketPolicy{
Statement: []statement{{
Effect: "Allow",
Principal: principal{AWS: allUsersWildcard},
Action: []string{s3GetObject},
Resource: []string{arnAwsPrefix + "dummy"},
}},
}
putBucketPolicy(hc, bktName, newPolicy, box, http.StatusInternalServerError)
newPolicy.Statement[0].Resource[0] = arnAwsPrefix + bktName
putBucketPolicy(hc, bktName, newPolicy, box, http.StatusOK)
bktPolicy = getBucketPolicy(hc, bktName)
for _, st := range bktPolicy.Statement {
if st.Effect == "Allow" && st.Principal.AWS == allUsersWildcard {
require.Equal(t, []string{arnAwsPrefix + bktName}, st.Resource)
require.ElementsMatch(t, []string{s3GetObject, s3ListBucket}, st.Action)
}
}
}
func getBucketPolicy(hc *handlerContext, bktName string) *bucketPolicy {
w, r := prepareTestRequest(hc, bktName, "", nil)
hc.Handler().GetBucketPolicyHandler(w, r)
assertStatus(hc.t, w, http.StatusOK)
policy := &bucketPolicy{}
err := json.NewDecoder(w.Result().Body).Decode(policy)
require.NoError(hc.t, err)
return policy
}
func putBucketPolicy(hc *handlerContext, bktName string, bktPolicy *bucketPolicy, box *accessbox.Box, status int) {
body, err := json.Marshal(bktPolicy)
require.NoError(hc.t, err)
w, r := prepareTestPayloadRequest(hc, bktName, "", bytes.NewReader(body))
ctx := context.WithValue(r.Context(), api.BoxData, box)
r = r.WithContext(ctx)
hc.Handler().PutBucketPolicyHandler(w, r)
assertStatus(hc.t, w, status)
}
func checkLastRecords(t *testing.T, tc *handlerContext, bktInfo *data.BucketInfo, action eacl.Action) {
bktACL, err := tc.Layer().GetBucketACL(tc.Context(), bktInfo)
require.NoError(t, err)
@ -1325,7 +1391,7 @@ func checkLastRecords(t *testing.T, tc *handlerContext, bktInfo *data.BucketInfo
}
}
func createAccessBox(t *testing.T) *accessbox.Box {
func createAccessBox(t *testing.T) (*accessbox.Box, *keys.PrivateKey) {
key, err := keys.NewPrivateKey()
require.NoError(t, err)
@ -1345,7 +1411,7 @@ func createAccessBox(t *testing.T) *accessbox.Box {
},
}
return box
return box, key
}
func createBucket(t *testing.T, tc *handlerContext, bktName string, box *accessbox.Box) *data.BucketInfo {