Initial checkin of gRPC to third_party/

third_party/grpc/src/core/iomgr/sockaddr_utils.h

+/*
+ *
+ * Copyright 2015, Google Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ *     * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#ifndef GRPC_INTERNAL_CORE_IOMGR_SOCKADDR_UTILS_H
+#define GRPC_INTERNAL_CORE_IOMGR_SOCKADDR_UTILS_H
+
+#include "src/core/iomgr/sockaddr.h"
+
+/* Returns true if addr is an IPv4-mapped IPv6 address within the
+   ::ffff:0.0.0.0/96 range, or false otherwise.
+
+   If addr4_out is non-NULL, the inner IPv4 address will be copied here when
+   returning true. */
+int grpc_sockaddr_is_v4mapped(const struct sockaddr *addr,
+                              struct sockaddr_in *addr4_out);
+
+/* If addr is an AF_INET address, writes the corresponding ::ffff:0.0.0.0/96
+   address to addr6_out and returns true.  Otherwise returns false. */
+int grpc_sockaddr_to_v4mapped(const struct sockaddr *addr,
+                              struct sockaddr_in6 *addr6_out);
+
+/* If addr is ::, 0.0.0.0, or ::ffff:0.0.0.0, writes the port number to
+   *port_out (if not NULL) and returns true, otherwise returns false. */
+int grpc_sockaddr_is_wildcard(const struct sockaddr *addr, int *port_out);
+
+/* Writes 0.0.0.0:port and [::]:port to separate sockaddrs. */
+void grpc_sockaddr_make_wildcards(int port, struct sockaddr_in *wild4_out,
+                                  struct sockaddr_in6 *wild6_out);
+
+/* Writes 0.0.0.0:port. */
+void grpc_sockaddr_make_wildcard4(int port, struct sockaddr_in *wild_out);
+
+/* Writes [::]:port. */
+void grpc_sockaddr_make_wildcard6(int port, struct sockaddr_in6 *wild_out);
+
+/* Return the IP port number of a sockaddr */
+int grpc_sockaddr_get_port(const struct sockaddr *addr);
+
+/* Set IP port number of a sockaddr */
+int grpc_sockaddr_set_port(const struct sockaddr *addr, int port);
+
+/* Converts a sockaddr into a newly-allocated human-readable string.
+
+   Currently, only the AF_INET and AF_INET6 families are recognized.
+   If the normalize flag is enabled, ::ffff:0.0.0.0/96 IPv6 addresses are
+   displayed as plain IPv4.
+
+   Usage is similar to gpr_asprintf: returns the number of bytes written
+   (excluding the final '\0'), and *out points to a string which must later be
+   destroyed using gpr_free().
+
+   In the unlikely event of an error, returns -1 and sets *out to NULL.
+   The existing value of errno is always preserved. */
+int grpc_sockaddr_to_string(char **out, const struct sockaddr *addr,
+                            int normalize);
+
+char *grpc_sockaddr_to_uri(const struct sockaddr *addr);
+
+#endif /* GRPC_INTERNAL_CORE_IOMGR_SOCKADDR_UTILS_H */