[#339] sigv4a: Support presign

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

api/auth/center.go

@@ -9,7 +9,6 @@ import (
 	"io"
 	"mime/multipart"
 	"net/http"
-	"os"
 	"regexp"
 	"strings"
 	"time"
@@ -24,7 +23,6 @@ import (
 	oid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object/id"
 	credentialsv2 "github.com/aws/aws-sdk-go-v2/credentials"
 	"github.com/aws/aws-sdk-go/aws/credentials"
-	"github.com/aws/smithy-go/logging"
 )
 
 var (
@@ -426,8 +424,6 @@ func (c *Center) checkSign(authHeader *AuthHeader, box *accessbox.Box, request *
 	case signaturePreambleSigV4A:
 		signer := v4a.NewSigner(func(options *v4a.SignerOptions) {
 			options.DisableURIPathEscaping = true
-			options.LogSigning = true
-			options.Logger = logging.NewStandardLogger(os.Stdout)
 		})
 
 		credAdapter := v4a.SymmetricCredentialAdaptor{
@@ -439,13 +435,16 @@ func (c *Center) checkSign(authHeader *AuthHeader, box *accessbox.Box, request *
 			return fmt.Errorf("failed to derive assymetric key from credentials: %w", err)
 		}
 
-		if authHeader.IsPresigned {
+		if !authHeader.IsPresigned {
+			return signer.VerifySignature(creds, request, authHeader.PayloadHash, authHeader.Service,
+				strings.Split(authHeader.Region, ","), signatureDateTime, authHeader.Signature)
+		}
+
 		if err = checkPresignedDate(authHeader, signatureDateTime); err != nil {
 			return err
 		}
-		}
 
-		return signer.VerifySignature(creds, request, authHeader.PayloadHash, authHeader.Service,
+		return signer.VerifyPresigned(creds, request, authHeader.PayloadHash, authHeader.Service,
 			strings.Split(authHeader.Region, ","), signatureDateTime, authHeader.Signature)
 	default:
 		return fmt.Errorf("invalid preamble: %s", authHeader.Preamble)

api/auth/center_test.go

@@ -13,8 +13,8 @@ import (
 	"time"
 
 	v4 "git.frostfs.info/TrueCloudLab/frostfs-s3-gw/api/auth/signer/v4"
-	"git.frostfs.info/TrueCloudLab/frostfs-s3-gw/api/cache"
 	v4a "git.frostfs.info/TrueCloudLab/frostfs-s3-gw/api/auth/signer/v4asdk2"
+	"git.frostfs.info/TrueCloudLab/frostfs-s3-gw/api/cache"
 	"git.frostfs.info/TrueCloudLab/frostfs-s3-gw/api/errors"
 	"git.frostfs.info/TrueCloudLab/frostfs-s3-gw/creds/accessbox"
 	"git.frostfs.info/TrueCloudLab/frostfs-s3-gw/creds/tokens"
@@ -24,10 +24,9 @@ import (
 	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object"
 	oid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object/id"
 	oidtest "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object/id/test"
+	credentialsv2 "github.com/aws/aws-sdk-go-v2/credentials"
 	"github.com/aws/aws-sdk-go/aws/credentials"
 	"github.com/nspcc-dev/neo-go/pkg/crypto/keys"
-	oid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object/id"
-	credentialsv2 "github.com/aws/aws-sdk-go-v2/credentials"
 	"github.com/stretchr/testify/require"
 	"go.uber.org/zap/zaptest"
 )
@@ -66,6 +65,7 @@ func TestAuthHeaderParse(t *testing.T) {
 				Signature:    "2811ccb9e242f41426738fb1f",
 				SignedFields: []string{"host", "x-amz-content-sha256", "x-amz-date"},
 				Date:         "20210809",
+				Preamble:     signaturePreambleSigV4,
 			},
 		},
 		{

api/auth/presign.go

@@ -39,11 +39,10 @@ func PresignRequest(creds *credentials.Credentials, reqData RequestData, presign
 		return nil, fmt.Errorf("failed to create new request: %w", err)
 	}
 
-	req.Header.Set(AmzDate, presignData.SignTime.Format("20060102T150405Z"))
-
 	for k, v := range presignData.Headers {
-		req.Header.Set(k, v)
+		req.Header.Set(k, v) // maybe we should filter system header (or keep responsibility on caller)
 	}
+	req.Header.Set(AmzDate, presignData.SignTime.Format("20060102T150405Z"))
 
 	signer := v4.NewSigner(creds)
 	signer.DisableURIPathEscaping = true
@@ -63,8 +62,11 @@ func PresignRequestV4a(credProvider credentialsv2.StaticCredentialsProvider, req
 		return nil, fmt.Errorf("failed to create new request: %w", err)
 	}
 
+	for k, v := range presignData.Headers {
+		req.Header.Set(k, v) // maybe we should filter system header (or keep responsibility on caller)
+	}
+
 	req.Header.Set(AmzDate, presignData.SignTime.Format("20060102T150405Z"))
-	req.Header.Set(ContentTypeHdr, "text/plain")
 	req.Header.Set(AmzExpires, strconv.Itoa(int(presignData.Lifetime.Seconds())))
 
 	signer := v4a.NewSigner(func(options *v4a.SignerOptions) {

api/auth/presign_test.go

@@ -75,6 +75,9 @@ func TestCheckSign(t *testing.T) {
 		Region:   "spb",
 		Lifetime: 10 * time.Minute,
 		SignTime: time.Now().UTC(),
+		Headers: map[string]string{
+			ContentTypeHdr: "text/plain",
+		},
 	}
 
 	req, err := PresignRequest(awsCreds, reqData, presignData)
@@ -120,11 +123,16 @@ func TestCheckSignV4a(t *testing.T) {
 		Region:   "spb",
 		Lifetime: 10 * time.Minute,
 		SignTime: time.Now().UTC(),
+		Headers: map[string]string{
+			ContentTypeHdr: "text/plain",
+		},
 	}
 
 	req, err := PresignRequestV4a(awsCreds, reqData, presignData)
 	require.NoError(t, err)
 
+	req.Header.Set(ContentTypeHdr, "text/plain")
+
 	expBox := &accessbox.Box{
 		Gate: &accessbox.GateData{
 			SecretKey: secretKey,
@@ -171,9 +179,7 @@ func TestPresignRequestV4a(t *testing.T) {
 
 	req, err := http.NewRequest("GET", "http://localhost:8084/bucket/object", nil)
 	require.NoError(t, err)
-	//req.Header.Set(AmzRegionSet, strings.Join(regionSet, ","))
+	req.Header.Set(AmzExpires, "600")
-	//req.Header.Set(AmzDate, signingTime.Format("20060102T150405Z"))
-	//req.Header.Set(AmzAlgorithm, signaturePreambleSigV4A)
 
 	presignedURL, hdr, err := signer.PresignHTTP(req.Context(), creds, req, "", service, regionSet, signingTime)
 	require.NoError(t, err)
@@ -185,7 +191,10 @@ func TestPresignRequestV4a(t *testing.T) {
 
 	r, err := http.NewRequest("GET", presignedURL, nil)
 	require.NoError(t, err)
+	query := r.URL.Query()
+	query.Del(AmzSignature)
+	r.URL.RawQuery = query.Encode()
 
-	err = signer.VerifySignature(creds, r, "", service, regionSet, signingTime, signature)
+	err = signer.VerifyPresigned(creds, r, "", service, regionSet, signingTime, signature)
 	require.NoError(t, err)
 }

api/auth/signer/v4asdk2/v4a.go

@@ -202,6 +202,15 @@ func (s *Signer) SignHTTP(ctx context.Context, credentials Credentials, r *http.
 
 // VerifySignature checks sigv4a.
 func (s *Signer) VerifySignature(credentials Credentials, r *http.Request, payloadHash string, service string, regionSet []string, signingTime time.Time, signature string, optFns ...func(*SignerOptions)) error {
+	return s.verifySignature(credentials, r, payloadHash, service, regionSet, signingTime, signature, false, optFns...)
+}
+
+// VerifyPresigned checks sigv4a.
+func (s *Signer) VerifyPresigned(credentials Credentials, r *http.Request, payloadHash string, service string, regionSet []string, signingTime time.Time, signature string, optFns ...func(*SignerOptions)) error {
+	return s.verifySignature(credentials, r, payloadHash, service, regionSet, signingTime, signature, true, optFns...)
+}
+
+func (s *Signer) verifySignature(credentials Credentials, r *http.Request, payloadHash string, service string, regionSet []string, signingTime time.Time, signature string, isPresigned bool, optFns ...func(*SignerOptions)) error {
 	options := s.options
 	for _, fn := range optFns {
 		fn(&options)
@@ -214,6 +223,7 @@ func (s *Signer) VerifySignature(credentials Credentials, r *http.Request, paylo
 		RegionSet:              regionSet,
 		Credentials:            credentials,
 		Time:                   signingTime.UTC(),
+		IsPreSign:              isPresigned,
 		DisableHeaderHoisting:  options.DisableHeaderHoisting,
 		DisableURIPathEscaping: options.DisableURIPathEscaping,
 	}
@@ -465,11 +475,6 @@ func (s *httpSigner) buildCanonicalHeaders(host string, rule v4Internal.Rule, he
 			continue // ignored header
 		}
 
-		if strings.EqualFold(k, contentLengthHeader) {
-			// prevent signing already handled content-length header.
-			continue
-		}
-
 		lowerCaseKey := strings.ToLower(k)
 		if _, ok := signed[lowerCaseKey]; ok {
 			// include additional values

cmd/s3-authmate/modules/generate-presigned-url.go

@@ -3,11 +3,13 @@ package modules
 import (
 	"encoding/json"
 	"fmt"
+	"net/http"
 	"os"
 	"strings"
 	"time"
 
 	"git.frostfs.info/TrueCloudLab/frostfs-s3-gw/api/auth"
+	credentialsv2 "github.com/aws/aws-sdk-go-v2/credentials"
 	"github.com/aws/aws-sdk-go/aws"
 	"github.com/aws/aws-sdk-go/aws/credentials"
 	"github.com/aws/aws-sdk-go/aws/session"
@@ -38,6 +40,7 @@ const (
 	awsAccessKeyIDFlag     = "aws-access-key-id"
 	awsSecretAccessKeyFlag = "aws-secret-access-key"
 	headerFlag             = "header"
+	sigV4AFlag             = "sigv4a"
 )
 
 func initGeneratePresignedURLCmd() {
@@ -51,6 +54,7 @@ func initGeneratePresignedURLCmd() {
 	generatePresignedURLCmd.Flags().String(awsAccessKeyIDFlag, "", "AWS access key id to sign the URL (default is taken from ~/.aws/credentials)")
 	generatePresignedURLCmd.Flags().String(awsSecretAccessKeyFlag, "", "AWS secret access key to sign the URL (default is taken from ~/.aws/credentials)")
 	generatePresignedURLCmd.Flags().StringSlice(headerFlag, nil, "Header in form of 'Key: value' to use in presigned URL (use flags repeatedly for multiple headers or separate them by comma)")
+	generatePresignedURLCmd.Flags().Bool(sigV4AFlag, false, "Use SigV4A for signing request")
 
 	_ = generatePresignedURLCmd.MarkFlagRequired(endpointFlag)
 	_ = generatePresignedURLCmd.MarkFlagRequired(bucketFlag)
@@ -101,7 +105,18 @@ func runGeneratePresignedURLCmd(*cobra.Command, []string) error {
 	}
 	presignData.Headers = headers
 
-	req, err := auth.PresignRequest(sess.Config.Credentials, reqData, presignData)
+	var req *http.Request
+	if viper.GetBool(sigV4AFlag) {
+		val, err := sess.Config.Credentials.Get()
+		if err != nil {
+			return wrapPreparationError(err)
+		}
+
+		awsCreds := credentialsv2.NewStaticCredentialsProvider(val.AccessKeyID, val.SecretAccessKey, "")
+		req, err = auth.PresignRequestV4a(awsCreds, reqData, presignData)
+	} else {
+		req, err = auth.PresignRequest(sess.Config.Credentials, reqData, presignData)
+	}
 	if err != nil {
 		return wrapBusinessLogicError(err)
 	}