1 files changed, 47 insertions, 0 deletions
diff --git a/src/include/ipaddr.h b/src/include/ipaddr.h
new file mode 100644
index 000000000..bf06cfc93
--- /dev/null
+++ b/src/include/ipaddr.h
@@ -0,0 +1,47 @@
+#ifndef CEPH_IPADDR_H
+#define CEPH_IPADDR_H
+
+class entity_addr_t;
+
+/*
+ * Check if an IP address that is in the wanted subnet.
+ */
+bool matches_ipv4_in_subnet(const struct ifaddrs& addrs,
+                            const struct sockaddr_in* net,
+                            unsigned int prefix_len);
+bool matches_ipv6_in_subnet(const struct ifaddrs& addrs,
+                            const struct sockaddr_in6* net,
+                            unsigned int prefix_len);
+
+/*
+ * Validate and parse IPv4 or IPv6 network
+ *
+ * Given a network (e.g. "192.168.0.0/24") and pointers to a sockaddr_storage
+ * struct and an unsigned int:
+ *
+ * if the network string is valid, return true and populate sockaddr_storage
+ * and prefix_len;
+ *
+ * if the network string is invalid, return false.
+ */
+bool parse_network(const char *s,
+		   struct sockaddr_storage *network,
+		   unsigned int *prefix_len);
+bool parse_network(const char *s,
+		   entity_addr_t *network,
+		   unsigned int *prefix_len);
+
+void netmask_ipv6(const struct in6_addr *addr,
+		  unsigned int prefix_len,
+		  struct in6_addr *out);
+
+void netmask_ipv4(const struct in_addr *addr,
+		  unsigned int prefix_len,
+		  struct in_addr *out);
+
+bool network_contains(
+	const struct entity_addr_t& network,
+	unsigned int prefix_len,
+	const struct entity_addr_t& addr);
+
+#endif