1 files changed, 87 insertions, 0 deletions
diff --git a/rtrlib/lib/ip.h b/rtrlib/lib/ip.h
new file mode 100644
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--- /dev/null
+++ b/rtrlib/lib/ip.h
@@ -0,0 +1,87 @@
+/*
+ * This file is part of RTRlib.
+ *
+ * This file is subject to the terms and conditions of the MIT license.
+ * See the file LICENSE in the top level directory for more details.
+ *
+ * Website: http://rtrlib.realmv6.org/
+ */
+
+#ifndef LRTR_IP_PUBLIC_H
+#define LRTR_IP_PUBLIC_H
+
+#include "rtrlib/lib/ipv4.h"
+#include "rtrlib/lib/ipv6.h"
+
+#include <stdbool.h>
+/**
+ * @defgroup util_h Utility functions
+ * @{
+ */
+
+/**
+ * @brief Version of the IP protocol.
+ */
+enum lrtr_ip_version {
+	/** IPV4 */
+	LRTR_IPV4,
+
+	/** LRTR_IPV6 */
+	LRTR_IPV6
+};
+
+/**
+ * @brief The lrtr_ip_addr struct stores a IPv4 or IPv6 address in host byte order.
+ * @param ver Specifies the type of the stored address.
+ * @param u Union holding a lrtr_ipv4_addr or lrtr_ipv6_addr.
+ */
+struct lrtr_ip_addr {
+	enum lrtr_ip_version ver;
+	union {
+		struct lrtr_ipv4_addr addr4;
+		struct lrtr_ipv6_addr addr6;
+	} u;
+};
+
+/**
+ * Converts the passed lrtr_ip_addr struct to string representation.
+ * @param[in] ip lrtr_ip_addr
+ * @param[out] str Pointer to a char array.
+ * The array must be at least INET_ADDRSTRLEN bytes long if the passed lrtr_ip_addr stores an IPv4 address.
+ * If lrtr_ip_addr stores an IPv6 address, str must be at least INET6_ADDRSTRLEN bytes long.
+ * @param[in] len Length of the str array.
+ * @result 0 On success.
+ * @result -1 On error.
+ */
+int lrtr_ip_addr_to_str(const struct lrtr_ip_addr *ip, char *str, const unsigned int len);
+
+/**
+ * Converts the passed IP address in string representation to an lrtr_ip_addr.
+ * @param[in] str Pointer to a Null terminated char array.
+ * @param[out] ip Pointer to a lrtr_ip_addr struct.
+ * @result 0 On success.
+ * @result -1 On error.
+ */
+int lrtr_ip_str_to_addr(const char *str, struct lrtr_ip_addr *ip);
+
+/**
+ *
+ * @brief Checks if two lrtr_ip_addr structs are equal.
+ * @param[in] a lrtr_ip_addr
+ * @param[in] b lrtr_ip_addr
+ * @return true If a == b.
+ * @return false If a != b.
+ */
+bool lrtr_ip_addr_equal(const struct lrtr_ip_addr a, const struct lrtr_ip_addr b);
+
+/**
+ * Compares addr1 in the lrtr_ip_addr struct with addr2 in string representation.
+ * @param[in] addr1 lrtr_ip_addr
+ * @param[in] addr2 IP-address as string
+ * @return true If a == b
+ * @return false If a != b
+ */
+bool lrtr_ip_str_cmp(const struct lrtr_ip_addr *addr1, const char *addr2);
+
+#endif
+/** @} */