Fix go-gitea#16252 - Equivalent to go-gitea#16268

Signed-off-by: Andrew Thornton <[email protected]>

Author: zeripath

models/login_source.go

@@ -11,6 +11,7 @@ import (
 
 	"code.gitea.io/gitea/modules/log"
 	"code.gitea.io/gitea/modules/timeutil"
+	jsoniter "github.com/json-iterator/go"
 
 	"xorm.io/xorm"
 	"xorm.io/xorm/convert"
@@ -126,6 +127,17 @@ func Cell2Int64(val xorm.Cell) int64 {
 	return (*val).(int64)
 }
 
+// JsonUnmarshalIgnoreErroneousBOM - due to a bug in xorm (see https://gitea.com/xorm/xorm/pulls/1957) - it's
+// possible that a Blob may gain an unwanted prefix of 0xff 0xfe.
+func JsonUnmarshalIgnoreErroneousBOM(bs []byte, v interface{}) error {
+	json := jsoniter.ConfigCompatibleWithStandardLibrary
+	err := json.Unmarshal(bs, &v)
+	if err != nil && len(bs) > 2 && bs[0] == 0xff && bs[1] == 0xfe {
+		err = json.Unmarshal(bs[2:], &v)
+	}
+	return err
+}
+
 // BeforeSet is invoked from XORM before setting the value of a field of this object.
 func (source *LoginSource) BeforeSet(colName string, val xorm.Cell) {
 	if colName == "type" {

models/repo_unit.go

@@ -28,8 +28,7 @@ type UnitConfig struct{}
 
 // FromDB fills up a UnitConfig from serialized format.
 func (cfg *UnitConfig) FromDB(bs []byte) error {
-	json := jsoniter.ConfigCompatibleWithStandardLibrary
-	return json.Unmarshal(bs, &cfg)
+	return JsonUnmarshalIgnoreErroneousBOM(bs, &cfg)
 }
 
 // ToDB exports a UnitConfig to a serialized format.
@@ -45,8 +44,7 @@ type ExternalWikiConfig struct {
 
 // FromDB fills up a ExternalWikiConfig from serialized format.
 func (cfg *ExternalWikiConfig) FromDB(bs []byte) error {
-	json := jsoniter.ConfigCompatibleWithStandardLibrary
-	return json.Unmarshal(bs, &cfg)
+	return JsonUnmarshalIgnoreErroneousBOM(bs, &cfg)
 }
 
 // ToDB exports a ExternalWikiConfig to a serialized format.
@@ -64,8 +62,7 @@ type ExternalTrackerConfig struct {
 
 // FromDB fills up a ExternalTrackerConfig from serialized format.
 func (cfg *ExternalTrackerConfig) FromDB(bs []byte) error {
-	json := jsoniter.ConfigCompatibleWithStandardLibrary
-	return json.Unmarshal(bs, &cfg)
+	return JsonUnmarshalIgnoreErroneousBOM(bs, &cfg)
 }
 
 // ToDB exports a ExternalTrackerConfig to a serialized format.
@@ -83,8 +80,7 @@ type IssuesConfig struct {
 
 // FromDB fills up a IssuesConfig from serialized format.
 func (cfg *IssuesConfig) FromDB(bs []byte) error {
-	json := jsoniter.ConfigCompatibleWithStandardLibrary
-	return json.Unmarshal(bs, &cfg)
+	return JsonUnmarshalIgnoreErroneousBOM(bs, &cfg)
 }
 
 // ToDB exports a IssuesConfig to a serialized format.
@@ -107,8 +103,7 @@ type PullRequestsConfig struct {
 
 // FromDB fills up a PullRequestsConfig from serialized format.
 func (cfg *PullRequestsConfig) FromDB(bs []byte) error {
-	json := jsoniter.ConfigCompatibleWithStandardLibrary
-	return json.Unmarshal(bs, &cfg)
+	return JsonUnmarshalIgnoreErroneousBOM(bs, &cfg)
 }
 
 // ToDB exports a PullRequestsConfig to a serialized format.

services/auth/source/ldap/source.go

@@ -65,13 +65,11 @@ type wrappedSource struct {
 
 // FromDB fills up a LDAPConfig from serialized format.
 func (source *Source) FromDB(bs []byte) error {
-	json := jsoniter.ConfigCompatibleWithStandardLibrary
-
 	wrapped := &wrappedSource{
 		Source: source,
 	}
 
-	err := json.Unmarshal(bs, &wrapped)
+	err := models.JsonUnmarshalIgnoreErroneousBOM(bs, &wrapped)
 	if err != nil {
 		return err
 	}

services/auth/source/oauth2/source.go

@@ -32,8 +32,7 @@ type Source struct {
 
 // FromDB fills up an OAuth2Config from serialized format.
 func (source *Source) FromDB(bs []byte) error {
-	json := jsoniter.ConfigCompatibleWithStandardLibrary
-	return json.Unmarshal(bs, source)
+	return models.JsonUnmarshalIgnoreErroneousBOM(bs, source)
 }
 
 // ToDB exports an SMTPConfig to a serialized format.

services/auth/source/pam/source.go

@@ -28,8 +28,7 @@ type Source struct {
 
 // FromDB fills up a PAMConfig from serialized format.
 func (source *Source) FromDB(bs []byte) error {
-	json := jsoniter.ConfigCompatibleWithStandardLibrary
-	return json.Unmarshal(bs, &source)
+	return models.JsonUnmarshalIgnoreErroneousBOM(bs, &source)
 }
 
 // ToDB exports a PAMConfig to a serialized format.

services/auth/source/smtp/source.go

@@ -32,8 +32,7 @@ type Source struct {
 
 // FromDB fills up an SMTPConfig from serialized format.
 func (source *Source) FromDB(bs []byte) error {
-	json := jsoniter.ConfigCompatibleWithStandardLibrary
-	return json.Unmarshal(bs, source)
+	return models.JsonUnmarshalIgnoreErroneousBOM(bs, source)
 }
 
 // ToDB exports an SMTPConfig to a serialized format.

services/auth/source/sspi/source.go

@@ -27,8 +27,7 @@ type Source struct {
 
 // FromDB fills up an SSPIConfig from serialized format.
 func (cfg *Source) FromDB(bs []byte) error {
-	json := jsoniter.ConfigCompatibleWithStandardLibrary
-	return json.Unmarshal(bs, cfg)
+	return models.JsonUnmarshalIgnoreErroneousBOM(bs, cfg)
 }
 
 // ToDB exports an SSPIConfig to a serialized format.