1 files changed, 32 insertions, 0 deletions
diff --git a/plugin/valid.go b/plugin/valid.go
new file mode 100644
index 000000000..62c594a1a
--- /dev/null
+++ b/plugin/valid.go
@@ -0,0 +1,32 @@
+// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
+// See License.txt for license information.
+
+package plugin
+
+import (
+	"regexp"
+	"unicode/utf8"
+)
+
+const (
+	MinIdLength = 3
+	MaxIdLength = 190
+)
+
+var ValidId *regexp.Regexp
+
+func init() {
+	ValidId = regexp.MustCompile(`^[a-zA-Z0-9-_\.]+$`)
+}
+
+func IsValidId(id string) bool {
+	if utf8.RuneCountInString(id) < MinIdLength {
+		return false
+	}
+
+	if utf8.RuneCountInString(id) > MaxIdLength {
+		return false
+	}
+
+	return ValidId.MatchString(id)
+}