Merge pull request #186 from superseriousbusiness/struct_validation

Struct validation

1 files changed, 63 insertions, 0 deletions

diff --git a/internal/validate/structvalidation.go b/internal/validate/structvalidation.go
new file mode 100644
index 000000000..ff72e253d
--- /dev/null
+++ b/internal/validate/structvalidation.go
@@ -0,0 +1,63 @@
+/*
+   GoToSocial
+   Copyright (C) 2021 GoToSocial Authors admin@gotosocial.org
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Affero General Public License as published by
+   the Free Software Foundation, either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Affero General Public License for more details.
+
+   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 validate
+
+import (
+	"reflect"
+
+	"github.com/go-playground/validator/v10"
+	"github.com/superseriousbusiness/gotosocial/internal/regexes"
+)
+
+var v *validator.Validate
+
+func ulidValidator(fl validator.FieldLevel) bool {
+	field := fl.Field()
+
+	switch field.Kind() {
+	case reflect.String:
+		return regexes.ULID.MatchString(field.String())
+	default:
+		return false
+	}
+}
+
+func init() {
+	v = validator.New()
+	if err := v.RegisterValidation("ulid", ulidValidator); err != nil {
+		panic(err)
+	}
+}
+
+// Struct validates the passed struct, returning validator.ValidationErrors if invalid, or nil if OK.
+func Struct(s interface{}) error {
+	return processValidationError(v.Struct(s))
+}
+
+func processValidationError(err error) error {
+	if err == nil {
+		return nil
+	}
+
+	if ive, ok := err.(*validator.InvalidValidationError); ok {
+		panic(ive)
+	}
+
+	return err.(validator.ValidationErrors)
+}