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allow S3 gateway to support object locked buckets (#13257)

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- Supports object locked buckets that require
  PutObject() to set content-md5 always.
- Use SSE-S3 when S3 gateway is being used instead
  of SSE-KMS for auto-encryption.
This commit is contained in:
Harshavardhana 2021-09-21 09:02:15 -07:00 committed by GitHub
parent 0b55a0423e
commit 50a68a1791
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GPG Key ID: 4AEE18F83AFDEB23
7 changed files with 68 additions and 36 deletions
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8
cmd/bucket-encryption.go
View File

@ -21,7 +21,7 @@ import (
"errors"
"io"
bucketsse "github.com/minio/minio/internal/bucket/encryption"
sse "github.com/minio/minio/internal/bucket/encryption"
)
// BucketSSEConfigSys - in-memory cache of bucket encryption config
@ -33,7 +33,7 @@ func NewBucketSSEConfigSys() *BucketSSEConfigSys {
}
// Get - gets bucket encryption config for the given bucket.
func (sys *BucketSSEConfigSys) Get(bucket string) (*bucketsse.BucketSSEConfig, error) {
func (sys *BucketSSEConfigSys) Get(bucket string) (*sse.BucketSSEConfig, error) {
if globalIsGateway {
objAPI := newObjectLayerFn()
if objAPI == nil {
@ -47,8 +47,8 @@ func (sys *BucketSSEConfigSys) Get(bucket string) (*bucketsse.BucketSSEConfig, e
}
// validateBucketSSEConfig parses bucket encryption configuration and validates if it is supported by MinIO.
func validateBucketSSEConfig(r io.Reader) (*bucketsse.BucketSSEConfig, error) {
encConfig, err := bucketsse.ParseBucketSSEConfig(r)
func validateBucketSSEConfig(r io.Reader) (*sse.BucketSSEConfig, error) {
encConfig, err := sse.ParseBucketSSEConfig(r)
if err != nil {
return nil, err
}

6
cmd/bucket-handlers.go
View File

@ -39,6 +39,7 @@ import (
"github.com/minio/minio-go/v7/pkg/set"
"github.com/minio/minio-go/v7/pkg/tags"
sse "github.com/minio/minio/internal/bucket/encryption"
objectlock "github.com/minio/minio/internal/bucket/object/lock"
"github.com/minio/minio/internal/bucket/replication"
"github.com/minio/minio/internal/config/dns"
@ -976,7 +977,10 @@ func (api objectAPIHandlers) PostPolicyBucketHandler(w http.ResponseWriter, r *h
// Check if bucket encryption is enabled
sseConfig, _ := globalBucketSSEConfigSys.Get(bucket)
sseConfig.Apply(r.Header, globalAutoEncryption)
sseConfig.Apply(r.Header, sse.ApplyOptions{
AutoEncrypt: globalAutoEncryption,
Passthrough: globalIsGateway && globalGatewayName == S3BackendGateway,
})
// get gateway encryption options
var opts ObjectOptions

6
cmd/bucket-lifecycle.go
View File

@ -380,9 +380,9 @@ const (
// Encryption specifies encryption setting on restored bucket
type Encryption struct {
EncryptionType sse.SSEAlgorithm `xml:"EncryptionType"`
KMSContext string `xml:"KMSContext,omitempty"`
KMSKeyID string `xml:"KMSKeyId,omitempty"`
EncryptionType sse.Algorithm `xml:"EncryptionType"`
KMSContext string `xml:"KMSContext,omitempty"`
KMSKeyID string `xml:"KMSKeyId,omitempty"`
}
// MetadataEntry denotes name and value.

4
cmd/gateway/s3/gateway-s3.go
View File

@ -481,6 +481,10 @@ func (l *s3Objects) PutObject(ctx context.Context, bucket string, object string,
UserMetadata: opts.UserDefined,
ServerSideEncryption: opts.ServerSideEncryption,
UserTags: tagMap,
// Content-Md5 is needed for buckets with object locking,
// instead of spending an extra API call to detect this
// we can set md5sum to be calculated always.
SendContentMd5: true,
}
ui, err := l.Client.PutObject(ctx, bucket, object, data, data.Size(), data.MD5Base64String(), data.SHA256HexString(), putOpts)
if err != nil {

21
cmd/object-handlers.go
View File

@ -41,6 +41,7 @@ import (
"github.com/minio/minio-go/v7/pkg/credentials"
"github.com/minio/minio-go/v7/pkg/encrypt"
"github.com/minio/minio-go/v7/pkg/tags"
sse "github.com/minio/minio/internal/bucket/encryption"
"github.com/minio/minio/internal/bucket/lifecycle"
objectlock "github.com/minio/minio/internal/bucket/object/lock"
"github.com/minio/minio/internal/bucket/replication"
@ -997,7 +998,10 @@ func (api objectAPIHandlers) CopyObjectHandler(w http.ResponseWriter, r *http.Re
// Check if bucket encryption is enabled
sseConfig, _ := globalBucketSSEConfigSys.Get(dstBucket)
sseConfig.Apply(r.Header, globalAutoEncryption)
sseConfig.Apply(r.Header, sse.ApplyOptions{
AutoEncrypt: globalAutoEncryption,
Passthrough: globalIsGateway && globalGatewayName == S3BackendGateway,
})
var srcOpts, dstOpts ObjectOptions
srcOpts, err = copySrcOpts(ctx, r, srcBucket, srcObject)
@ -1667,7 +1671,10 @@ func (api objectAPIHandlers) PutObjectHandler(w http.ResponseWriter, r *http.Req
// Check if bucket encryption is enabled
sseConfig, _ := globalBucketSSEConfigSys.Get(bucket)
sseConfig.Apply(r.Header, globalAutoEncryption)
sseConfig.Apply(r.Header, sse.ApplyOptions{
AutoEncrypt: globalAutoEncryption,
Passthrough: globalIsGateway && globalGatewayName == S3BackendGateway,
})
actualSize := size
if objectAPI.IsCompressionSupported() && isCompressible(r.Header, object) && size > 0 {
@ -1990,7 +1997,10 @@ func (api objectAPIHandlers) PutObjectExtractHandler(w http.ResponseWriter, r *h
// Check if bucket encryption is enabled
sseConfig, _ := globalBucketSSEConfigSys.Get(bucket)
sseConfig.Apply(r.Header, globalAutoEncryption)
sseConfig.Apply(r.Header, sse.ApplyOptions{
AutoEncrypt: globalAutoEncryption,
Passthrough: globalIsGateway && globalGatewayName == S3BackendGateway,
})
retPerms := isPutActionAllowed(ctx, getRequestAuthType(r), bucket, object, r, iampolicy.PutObjectRetentionAction)
holdPerms := isPutActionAllowed(ctx, getRequestAuthType(r), bucket, object, r, iampolicy.PutObjectLegalHoldAction)
@ -2186,7 +2196,10 @@ func (api objectAPIHandlers) NewMultipartUploadHandler(w http.ResponseWriter, r
// Check if bucket encryption is enabled
sseConfig, _ := globalBucketSSEConfigSys.Get(bucket)
sseConfig.Apply(r.Header, globalAutoEncryption)
sseConfig.Apply(r.Header, sse.ApplyOptions{
AutoEncrypt: globalAutoEncryption,
Passthrough: globalIsGateway && globalGatewayName == S3BackendGateway,
})
// Validate storage class metadata if present
if sc := r.Header.Get(xhttp.AmzStorageClass); sc != "" {

51
internal/bucket/encryption/bucket-sse-config.go
View File

@ -15,7 +15,7 @@
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
package cmd
package sse
import (
"encoding/xml"
@ -29,16 +29,16 @@ import (
const (
// AES256 is used with SSE-S3
AES256 SSEAlgorithm = "AES256"
AES256 Algorithm = "AES256"
// AWSKms is used with SSE-KMS
AWSKms SSEAlgorithm = "aws:kms"
AWSKms Algorithm = "aws:kms"
)
// SSEAlgorithm - represents valid SSE algorithms supported; currently only AES256 is supported
type SSEAlgorithm string
// Algorithm - represents valid SSE algorithms supported; currently only AES256 is supported
type Algorithm string
// UnmarshalXML - Unmarshals XML tag to valid SSE algorithm
func (alg *SSEAlgorithm) UnmarshalXML(d *xml.Decoder, start xml.StartElement) error {
func (alg *Algorithm) UnmarshalXML(d *xml.Decoder, start xml.StartElement) error {
var s string
if err := d.DecodeElement(&s, &start); err != nil {
return err
@ -57,18 +57,18 @@ func (alg *SSEAlgorithm) UnmarshalXML(d *xml.Decoder, start xml.StartElement) er
}
// MarshalXML - Marshals given SSE algorithm to valid XML
func (alg *SSEAlgorithm) MarshalXML(e *xml.Encoder, start xml.StartElement) error {
func (alg *Algorithm) MarshalXML(e *xml.Encoder, start xml.StartElement) error {
return e.EncodeElement(string(*alg), start)
}
// EncryptionAction - for ApplyServerSideEncryptionByDefault XML tag
type EncryptionAction struct {
Algorithm SSEAlgorithm `xml:"SSEAlgorithm,omitempty"`
MasterKeyID string `xml:"KMSMasterKeyID,omitempty"`
Algorithm Algorithm `xml:"SSEAlgorithm,omitempty"`
MasterKeyID string `xml:"KMSMasterKeyID,omitempty"`
}
// SSERule - for ServerSideEncryptionConfiguration XML tag
type SSERule struct {
// Rule - for ServerSideEncryptionConfiguration XML tag
type Rule struct {
DefaultEncryptionAction EncryptionAction `xml:"ApplyServerSideEncryptionByDefault"`
}
@ -76,9 +76,9 @@ const xmlNS = "http://s3.amazonaws.com/doc/2006-03-01/"
// BucketSSEConfig - represents default bucket encryption configuration
type BucketSSEConfig struct {
XMLNS string `xml:"xmlns,attr,omitempty"`
XMLName xml.Name `xml:"ServerSideEncryptionConfiguration"`
Rules []SSERule `xml:"Rule"`
XMLNS string `xml:"xmlns,attr,omitempty"`
XMLName xml.Name `xml:"ServerSideEncryptionConfiguration"`
Rules []Rule `xml:"Rule"`
}
// ParseBucketSSEConfig - Decodes given XML to a valid default bucket encryption config
@ -114,24 +114,35 @@ func ParseBucketSSEConfig(r io.Reader) (*BucketSSEConfig, error) {
return &config, nil
}
// ApplyOptions ask for specific features to be enabled,
// when bucketSSEConfig is empty.
type ApplyOptions struct {
AutoEncrypt bool
Passthrough bool // Set to 'true' for S3 gateway mode.
}
// Apply applies the SSE bucket configuration on the given HTTP headers and
// sets the specified SSE headers.
//
// Apply does not overwrite any existing SSE headers. Further, it will
// set minimal SSE-KMS headers if autoEncrypt is true and the BucketSSEConfig
// is nil.
func (b *BucketSSEConfig) Apply(headers http.Header, autoEncrypt bool) {
func (b *BucketSSEConfig) Apply(headers http.Header, opts ApplyOptions) {
if _, ok := crypto.IsRequested(headers); ok {
return
}
if b == nil {
if autoEncrypt {
headers.Set(xhttp.AmzServerSideEncryption, xhttp.AmzEncryptionKMS)
if opts.AutoEncrypt {
if !opts.Passthrough {
headers.Set(xhttp.AmzServerSideEncryption, xhttp.AmzEncryptionKMS)
} else {
headers.Set(xhttp.AmzServerSideEncryption, xhttp.AmzEncryptionAES)
}
}
return
}
switch b.Algorithm() {
switch b.Algo() {
case xhttp.AmzEncryptionAES:
headers.Set(xhttp.AmzServerSideEncryption, xhttp.AmzEncryptionAES)
case xhttp.AmzEncryptionKMS:
@ -140,8 +151,8 @@ func (b *BucketSSEConfig) Apply(headers http.Header, autoEncrypt bool) {
}
}
// Algorithm returns the SSE algorithm specified by the SSE configuration.
func (b *BucketSSEConfig) Algorithm() SSEAlgorithm {
// Algo returns the SSE algorithm specified by the SSE configuration.
func (b *BucketSSEConfig) Algo() Algorithm {
for _, rule := range b.Rules {
return rule.DefaultEncryptionAction.Algorithm
}

8
internal/bucket/encryption/bucket-sse-config_test.go
View File

@ -15,7 +15,7 @@
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
package cmd
package sse
import (
"bytes"
@ -30,7 +30,7 @@ func TestParseBucketSSEConfig(t *testing.T) {
XMLName: xml.Name{
Local: "ServerSideEncryptionConfiguration",
},
Rules: []SSERule{
Rules: []Rule{
{
DefaultEncryptionAction: EncryptionAction{
Algorithm: AES256,
@ -44,7 +44,7 @@ func TestParseBucketSSEConfig(t *testing.T) {
XMLName: xml.Name{
Local: "ServerSideEncryptionConfiguration",
},
Rules: []SSERule{
Rules: []Rule{
{
DefaultEncryptionAction: EncryptionAction{
Algorithm: AES256,
@ -58,7 +58,7 @@ func TestParseBucketSSEConfig(t *testing.T) {
XMLName: xml.Name{
Local: "ServerSideEncryptionConfiguration",
},
Rules: []SSERule{
Rules: []Rule{
{
DefaultEncryptionAction: EncryptionAction{
Algorithm: AWSKms,