feat: add block common exploits middleware

internal/middleware/var.go

@@ -0,0 +1,23 @@
+/*
+ * Copyright 2024 Jonas Kaninda
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+package middleware
+
+// sqlPatterns contains SQL injections patters
+const sqlPatterns = `(?i)(union|select|drop|insert|delete|update|create|alter|exec|;|--)`
+const traversalPatterns = `\.\./`
+const xssPatterns = `(?i)<script|onerror|onload`