tags were incorrectly used, fix them use the right package (#2070)

Author: harshavardhana

Diff for: api-compose-object.go

@@ -30,6 +30,7 @@ import (
 	"github.com/google/uuid"
 	"github.com/minio/minio-go/v7/pkg/encrypt"
 	"github.com/minio/minio-go/v7/pkg/s3utils"
+	"github.com/minio/minio-go/v7/pkg/tags"
 )
 
 // CopyDestOptions represents options specified by user for CopyObject/ComposeObject APIs
@@ -98,8 +99,8 @@ func (opts CopyDestOptions) Marshal(header http.Header) {
 	const replaceDirective = "REPLACE"
 	if opts.ReplaceTags {
 		header.Set(amzTaggingHeaderDirective, replaceDirective)
-		if tags := s3utils.TagEncode(opts.UserTags); tags != "" {
-			header.Set(amzTaggingHeader, tags)
+		if tags, _ := tags.NewTags(opts.UserTags, true); tags != nil {
+			header.Set(amzTaggingHeader, tags.String())
 		}
 	}
 
@@ -236,7 +237,9 @@ func (c *Client) copyObjectDo(ctx context.Context, srcBucket, srcObject, destBuc
 	}
 
 	if len(dstOpts.UserTags) != 0 {
-		headers.Set(amzTaggingHeader, s3utils.TagEncode(dstOpts.UserTags))
+		if tags, _ := tags.NewTags(dstOpts.UserTags, true); tags != nil {
+			headers.Set(amzTaggingHeader, tags.String())
+		}
 	}
 
 	reqMetadata := requestMetadata{

Diff for: api-put-object.go

@@ -30,6 +30,7 @@ import (
 
 	"github.com/minio/minio-go/v7/pkg/encrypt"
 	"github.com/minio/minio-go/v7/pkg/s3utils"
+	"github.com/minio/minio-go/v7/pkg/tags"
 	"golang.org/x/net/http/httpguts"
 )
 
@@ -229,7 +230,9 @@ func (opts PutObjectOptions) Header() (header http.Header) {
 	}
 
 	if len(opts.UserTags) != 0 {
-		header.Set(amzTaggingHeader, s3utils.TagEncode(opts.UserTags))
+		if tags, _ := tags.NewTags(opts.UserTags, true); tags != nil {
+			header.Set(amzTaggingHeader, tags.String())
+		}
 	}
 
 	for k, v := range opts.UserMetadata {

Diff for: pkg/s3utils/utils.go

@@ -261,44 +261,6 @@ func QueryEncode(v url.Values) string {
 	return buf.String()
 }
 
-// TagDecode - decodes canonical tag into map of key and value.
-func TagDecode(ctag string) map[string]string {
-	if ctag == "" {
-		return map[string]string{}
-	}
-	tags := strings.Split(ctag, "&")
-	tagMap := make(map[string]string, len(tags))
-	var err error
-	for _, tag := range tags {
-		kvs := strings.SplitN(tag, "=", 2)
-		if len(kvs) == 0 {
-			return map[string]string{}
-		}
-		if len(kvs) == 1 {
-			return map[string]string{}
-		}
-		tagMap[kvs[0]], err = url.PathUnescape(kvs[1])
-		if err != nil {
-			continue
-		}
-	}
-	return tagMap
-}
-
-// TagEncode - encodes tag values in their URL encoded form. In
-// addition to the percent encoding performed by urlEncodePath() used
-// here, it also percent encodes '/' (forward slash)
-func TagEncode(tags map[string]string) string {
-	if tags == nil {
-		return ""
-	}
-	values := url.Values{}
-	for k, v := range tags {
-		values[k] = []string{v}
-	}
-	return QueryEncode(values)
-}
-
 // if object matches reserved string, no need to encode them
 var reservedObjectNames = regexp.MustCompile("^[a-zA-Z0-9-_.~/]+$")
 

Diff for: pkg/s3utils/utils_test.go

@@ -20,7 +20,6 @@ package s3utils
 import (
 	"errors"
 	"net/url"
-	"reflect"
 	"testing"
 )
 
@@ -298,81 +297,6 @@ func TestQueryEncode(t *testing.T) {
 	}
 }
 
-// Tests tag decode to map
-func TestTagDecode(t *testing.T) {
-	testCases := []struct {
-		// canonical input
-		canonicalInput string
-
-		// Expected result.
-		resultMap map[string]string
-	}{
-		{"k=thisisthe%25url", map[string]string{"k": "thisisthe%url"}},
-		{"k=%E6%9C%AC%E8%AA%9E", map[string]string{"k": "本語"}},
-		{"k=%E6%9C%AC%E8%AA%9E.1", map[string]string{"k": "本語.1"}},
-		{"k=%3E123", map[string]string{"k": ">123"}},
-		{"k=myurl%23link", map[string]string{"k": "myurl#link"}},
-		{"k=space%20in%20url", map[string]string{"k": "space in url"}},
-		{"k=url%2Bpath", map[string]string{"k": "url+path"}},
-		{"k=url%2Fpath", map[string]string{"k": "url/path"}},
-	}
-
-	for _, testCase := range testCases {
-		testCase := testCase
-		t.Run("", func(t *testing.T) {
-			gotResult := TagDecode(testCase.canonicalInput)
-			if !reflect.DeepEqual(testCase.resultMap, gotResult) {
-				t.Errorf("Expected %s, got %s", testCase.resultMap, gotResult)
-			}
-		})
-	}
-}
-
-// Tests tag encode function for user tags.
-func TestTagEncode(t *testing.T) {
-	testCases := []struct {
-		// Input.
-		inputMap map[string]string
-		// Expected result.
-		result string
-	}{
-		{map[string]string{
-			"k": "thisisthe%url",
-		}, "k=thisisthe%25url"},
-		{map[string]string{
-			"k": "本語",
-		}, "k=%E6%9C%AC%E8%AA%9E"},
-		{map[string]string{
-			"k": "本語.1",
-		}, "k=%E6%9C%AC%E8%AA%9E.1"},
-		{map[string]string{
-			"k": ">123",
-		}, "k=%3E123"},
-		{map[string]string{
-			"k": "myurl#link",
-		}, "k=myurl%23link"},
-		{map[string]string{
-			"k": "space in url",
-		}, "k=space%20in%20url"},
-		{map[string]string{
-			"k": "url+path",
-		}, "k=url%2Bpath"},
-		{map[string]string{
-			"k": "url/path",
-		}, "k=url%2Fpath"},
-	}
-
-	for _, testCase := range testCases {
-		testCase := testCase
-		t.Run("", func(t *testing.T) {
-			gotResult := TagEncode(testCase.inputMap)
-			if testCase.result != gotResult {
-				t.Errorf("Expected %s, got %s", testCase.result, gotResult)
-			}
-		})
-	}
-}
-
 // Tests validate the URL path encoder.
 func TestEncodePath(t *testing.T) {
 	testCases := []struct {

Diff for: utils.go

@@ -41,6 +41,7 @@ import (
 
 	md5simd "github.com/minio/md5-simd"
 	"github.com/minio/minio-go/v7/pkg/s3utils"
+	"github.com/minio/minio-go/v7/pkg/tags"
 )
 
 func trimEtag(etag string) string {
@@ -322,7 +323,13 @@ func ToObjectInfo(bucketName, objectName string, h http.Header) (ObjectInfo, err
 			userMetadata[strings.TrimPrefix(k, "X-Amz-Meta-")] = v[0]
 		}
 	}
-	userTags := s3utils.TagDecode(h.Get(amzTaggingHeader))
+
+	userTags, err := tags.ParseObjectTags(h.Get(amzTaggingHeader))
+	if err != nil {
+		return ObjectInfo{}, ErrorResponse{
+			Code: "InternalError",
+		}
+	}
 
 	var tagCount int
 	if count := h.Get(amzTaggingCount); count != "" {
@@ -373,7 +380,7 @@ func ToObjectInfo(bucketName, objectName string, h http.Header) (ObjectInfo, err
 		// which are not part of object metadata.
 		Metadata:     metadata,
 		UserMetadata: userMetadata,
-		UserTags:     userTags,
+		UserTags:     userTags.ToMap(),
 		UserTagCount: tagCount,
 		Restore:      restore,