1 files changed, 33 insertions, 0 deletions
diff --git a/lib/in46_addr.h b/lib/in46_addr.h
new file mode 100644
index 0000000..e4654cc
--- /dev/null
+++ b/lib/in46_addr.h
@@ -0,0 +1,33 @@
+#pragma once
+#include <stdint.h>
+#include <netinet/in.h>
+
+#include "../gtp/pdp.h"
+
+/* a simple wrapper around an in6_addr to also contain the length of the address,
+ * thereby implicitly indicating the address family of the address */
+struct in46_addr {
+	uint8_t len;
+	union {
+		struct in_addr v4;
+		struct in6_addr v6;
+	};
+};
+
+struct in46_prefix {
+	struct in46_addr addr;
+	uint8_t prefixlen;
+};
+
+extern int in46a_to_af(const struct in46_addr *in);
+extern int in46a_to_sas(struct sockaddr_storage *out, const struct in46_addr *in);
+extern const char *in46a_ntop(const struct in46_addr *in, char *dst, socklen_t dst_size);
+extern const char *in46a_ntoa(const struct in46_addr *in46);
+extern const char *in46p_ntoa(const struct in46_prefix *in46p);
+extern int in46a_equal(const struct in46_addr *a, const struct in46_addr *b);
+extern int in46a_prefix_equal(const struct in46_addr *a, const struct in46_addr *b);
+extern int in46a_within_mask(const struct in46_addr *addr, const struct in46_addr *net, size_t prefixlen);
+unsigned int in46a_netmasklen(const struct in46_addr *netmask);
+
+int in46a_to_eua(const struct in46_addr *src, unsigned int size, struct ul66_t *eua);
+int in46a_from_eua(const struct ul66_t *eua, struct in46_addr *dst);