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Merge pull request #3200 from lapshin-vitaly/bufix/validate-tags-on-copy

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validate tags on copy object and add regex for validating tags
This commit is contained in:
Chris Lu 2022-06-29 01:37:14 -07:00 committed by GitHub
parent e22c2c8012 7c3d9d0535
commit c6e6e303db
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GPG key ID: 4AEE18F83AFDEB23
5 changed files with 136 additions and 26 deletions
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25
weed/s3api/s3api_object_copy_handlers.go
View file

@ -45,7 +45,12 @@ func (s3a *S3ApiServer) CopyObjectHandler(w http.ResponseWriter, r *http.Request
s3err.WriteErrorResponse(w, r, s3err.ErrInvalidCopySource)
return
}
entry.Extended = processMetadataBytes(r.Header, entry.Extended, replaceMeta, replaceTagging)
entry.Extended, err = processMetadataBytes(r.Header, entry.Extended, replaceMeta, replaceTagging)
if err != nil {
glog.Errorf("CopyObjectHandler ValidateTags error %s: %v", r.URL, err)
s3err.WriteErrorResponse(w, r, s3err.ErrInvalidTag)
return
}
err = s3a.touch(dir, name, entry)
if err != nil {
s3err.WriteErrorResponse(w, r, s3err.ErrInvalidCopySource)
@ -252,7 +257,7 @@ func processMetadata(reqHeader, existing http.Header, replaceMeta, replaceTaggin
return
}
func processMetadataBytes(reqHeader http.Header, existing map[string][]byte, replaceMeta, replaceTagging bool) (metadata map[string][]byte) {
func processMetadataBytes(reqHeader http.Header, existing map[string][]byte, replaceMeta, replaceTagging bool) (metadata map[string][]byte, err error) {
metadata = make(map[string][]byte)
if sc := existing[s3_constants.AmzStorageClass]; len(sc) > 0 {
@ -277,16 +282,18 @@ func processMetadataBytes(reqHeader http.Header, existing map[string][]byte, rep
}
}
}
if replaceTagging {
if tags := reqHeader.Get(s3_constants.AmzObjectTagging); tags != "" {
for _, v := range strings.Split(tags, "&") {
tag := strings.Split(v, "=")
if len(tag) == 2 {
metadata[s3_constants.AmzObjectTagging+"-"+tag[0]] = []byte(tag[1])
} else if len(tag) == 1 {
metadata[s3_constants.AmzObjectTagging+"-"+tag[0]] = nil
parsedTags, err := parseTagsHeader(tags)
if err != nil {
return nil, err
}
err = ValidateTags(parsedTags)
if err != nil {
return nil, err
}
for k, v := range parsedTags {
metadata[s3_constants.AmzObjectTagging+"-"+k] = []byte(v)
}
}
} else {

16
weed/s3api/s3api_object_copy_handlers_test.go
View file

@ -332,6 +332,19 @@ var processMetadataBytesTestCases = []struct {
"X-Amz-Tagging-type": "request",
},
},
{
108,
H{
"User-Agent": "firefox",
"X-Amz-Meta-My-Meta": "request",
"X-Amz-Tagging": "A=B&a=b&type=request*",
s3_constants.AmzUserMetaDirective: DirectiveReplace,
s3_constants.AmzObjectTaggingDirective: DirectiveReplace,
},
H{},
H{},
},
}
func TestProcessMetadata(t *testing.T) {
@ -339,7 +352,6 @@ func TestProcessMetadata(t *testing.T) {
reqHeader := transferHToHeader(tc.request)
existing := transferHToHeader(tc.existing)
replaceMeta, replaceTagging := replaceDirective(reqHeader)
err := processMetadata(reqHeader, existing, replaceMeta, replaceTagging, func(_ string, _ string) (tags map[string]string, err error) {
return tc.getTags, nil
}, "", "")
@ -367,7 +379,7 @@ func TestProcessMetadataBytes(t *testing.T) {
reqHeader := transferHToHeader(tc.request)
existing := transferHToBytesArr(tc.existing)
replaceMeta, replaceTagging := replaceDirective(reqHeader)
extends := processMetadataBytes(reqHeader, existing, replaceMeta, replaceTagging)
extends, _ := processMetadataBytes(reqHeader, existing, replaceMeta, replaceTagging)
result := transferBytesArrToH(extends)
fmtTagging(result, tc.want)

17
weed/s3api/s3api_object_tagging_handlers.go
View file

@ -62,23 +62,12 @@ func (s3a *S3ApiServer) PutObjectTaggingHandler(w http.ResponseWriter, r *http.R
return
}
tags := tagging.ToTags()
if len(tags) > 10 {
glog.Errorf("PutObjectTaggingHandler tags %s: %d tags more than 10", r.URL, len(tags))
err = ValidateTags(tags)
if err != nil {
glog.Errorf("PutObjectTaggingHandler ValidateTags error %s: %v", r.URL, err)
s3err.WriteErrorResponse(w, r, s3err.ErrInvalidTag)
return
}
for k, v := range tags {
if len(k) > 128 {
glog.Errorf("PutObjectTaggingHandler tags %s: tag key %s longer than 128", r.URL, k)
s3err.WriteErrorResponse(w, r, s3err.ErrInvalidTag)
return
}
if len(v) > 256 {
glog.Errorf("PutObjectTaggingHandler tags %s: tag value %s longer than 256", r.URL, v)
s3err.WriteErrorResponse(w, r, s3err.ErrInvalidTag)
return
}
}
if err = s3a.setTags(dir, name, tagging.ToTags()); err != nil {
if err == filer_pb.ErrNotFound {

40
weed/s3api/tags.go
View file

@ -2,6 +2,9 @@ package s3api
import (
"encoding/xml"
"fmt"
"regexp"
"strings"
)
type Tag struct {
@ -37,3 +40,40 @@ func FromTags(tags map[string]string) (t *Tagging) {
}
return
}
func parseTagsHeader(tags string) (map[string]string, error) {
parsedTags := make(map[string]string)
for _, v := range strings.Split(tags, "&") {
tag := strings.Split(v, "=")
if len(tag) == 2 {
parsedTags[tag[0]] = tag[1]
} else if len(tag) == 1 {
parsedTags[tag[0]] = ""
}
}
return parsedTags, nil
}
func ValidateTags(tags map[string]string) error {
if len(tags) > 10 {
return fmt.Errorf("validate tags: %d tags more than 10", len(tags))
}
for k, v := range tags {
if len(k) > 128 {
return fmt.Errorf("validate tags: tag key longer than 128")
}
validateKey, err := regexp.MatchString(`^([\p{L}\p{Z}\p{N}_.:/=+\-@]*)$`, k)
if !validateKey || err != nil {
return fmt.Errorf("validate tags key %s error, incorrect key", k)
}
if len(v) > 256 {
return fmt.Errorf("validate tags: tag value longer than 256")
}
validateValue, err := regexp.MatchString(`^([\p{L}\p{Z}\p{N}_.:/=+\-@]*)$`, v)
if !validateValue || err != nil {
return fmt.Errorf("validate tags value %s error, incorrect value", v)
}
}
return nil
}

62
weed/s3api/tags_test.go
View file

@ -50,3 +50,65 @@ func TestXMLMarshall(t *testing.T) {
assert.Equal(t, expected, actual)
}
type TestTags map[string]string
var ValidateTagsTestCases = []struct {
testCaseID int
tags TestTags
wantErrString string
}{
{
1,
TestTags{"key-1": "value-1"},
"",
},
{
2,
TestTags{"key-1": "valueOver256R59YI9bahPwAVqvLeKCvM2S1RjzgP8fNDKluCbol0XTTFY6VcMwTBmdnqjsddilXztSGfEoZS1wDAIMBA0rW0CLNSoE2zNg4TT0vDbLHEtZBoZjdZ5E0JNIAqwb9ptIk2VizYmhWjb1G4rJ0CqDGWxcy3usXaQg6Dk6kU8N4hlqwYWeGw7uqdghcQ3ScfF02nHW9QFMN7msLR5fe90mbFBBp3Tjq34i0LEr4By2vxoRa2RqdBhEJhi23Tm"},
"validate tags: tag value longer than 256",
},
{
3,
TestTags{"keyLenOver128a5aUUGcPexMELsz3RyROzIzfO6BKABeApH2nbbagpOxZh2MgBWYDZtFxQaCuQeP1xR7dUJLwfFfDHguVIyxvTStGDk51BemKETIwZ0zkhR7lhfHBp2y0nFnV": "value-1"},
"validate tags: tag key longer than 128",
},
{
4,
TestTags{"key-1*": "value-1"},
"validate tags key key-1* error, incorrect key",
},
{
5,
TestTags{"key-1": "value-1?"},
"validate tags value value-1? error, incorrect value",
},
{
6,
TestTags{
"key-1": "value",
"key-2": "value",
"key-3": "value",
"key-4": "value",
"key-5": "value",
"key-6": "value",
"key-7": "value",
"key-8": "value",
"key-9": "value",
"key-10": "value",
"key-11": "value",
},
"validate tags: 11 tags more than 10",
},
}
func TestValidateTags(t *testing.T) {
for _, testCase := range ValidateTagsTestCases {
err := ValidateTags(testCase.tags)
if testCase.wantErrString == "" {
assert.NoErrorf(t, err, "no error")
} else {
assert.EqualError(t, err, testCase.wantErrString)
}
}
}