1 files changed, 20 insertions, 0 deletions
diff --git a/src/nftutils.h b/src/nftutils.h
new file mode 100644
index 0000000..7db56f4
--- /dev/null
+++ b/src/nftutils.h
@@ -0,0 +1,20 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+#ifndef NFTUTILS_H
+#define NFTUTILS_H
+
+#include <stddef.h>
+
+/* The maximum buffer size for (struct protoent).p_name. It is excessively large,
+ * while still reasonably fitting on the stack. Arbitrarily chosen. */
+#define NFT_PROTONAME_MAXSIZE 1024
+
+bool nft_getprotobynumber(int number, char *out_name, size_t name_len);
+int nft_getprotobyname(const char *name);
+
+/* The maximum buffer size for (struct servent).s_name. It is excessively large,
+ * while still reasonably fitting on the stack. Arbitrarily chosen. */
+#define NFT_SERVNAME_MAXSIZE 1024
+
+bool nft_getservbyport(int port, const char *proto, char *out_name, size_t name_len);
+
+#endif /* NFTUTILS_H */