Put address_sorting's public header under its own directory. Also add

test_only to sort function used in test.

1 files changed, 110 insertions, 0 deletions

diff --git a/third_party/address_sorting/include/address_sorting/address_sorting.h b/third_party/address_sorting/include/address_sorting/address_sorting.h
new file mode 100644
index 0000000000..f11cd424b5
--- /dev/null
+++ b/third_party/address_sorting/include/address_sorting/address_sorting.h
@@ -0,0 +1,110 @@
+/*	$NetBSD: getaddrinfo.c,v 1.82 2006/03/25 12:09:40 rpaulo Exp $	*/
+/*	$KAME: getaddrinfo.c,v 1.29 2000/08/31 17:26:57 itojun Exp $	*/
+/*
+ * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. 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.
+ * 3. Neither the name of the project 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 PROJECT 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 PROJECT 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.
+ *
+ */
+
+/*
+ * This is an adaptation of Android's implementation of RFC 6724
+ * (in Android's getaddrinfo.c). It has some cosmetic differences
+ * from Android's getaddrinfo.c, but Android's getaddrinfo.c was
+ * used as a guide or example of a way to implement the RFC 6724 spec when
+ * this was written.
+ */
+
+#ifndef ADDRESS_SORTING_H
+#define ADDRESS_SORTING_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+typedef struct address_sorting_address {
+  char addr[128];
+  size_t len;
+} address_sorting_address;
+
+/* address_sorting_sortable represents one entry in a list of destination
+ * IP addresses to sort. It contains the destination IP address
+ * "sorting key", along with placeholder and scratch fields. */
+typedef struct address_sorting_sortable {
+  // input data; sorting key
+  address_sorting_address dest_addr;
+  // input data; optional value to attach to the sorting key
+  void* user_data;
+  // internal fields, these must be zero'd when passed to sort function
+  address_sorting_address source_addr;
+  bool source_addr_exists;
+  size_t original_index;
+} address_sorting_sortable;
+
+void address_sorting_rfc_6724_sort(address_sorting_sortable* sortables,
+                                   size_t sortables_len);
+
+void address_sorting_init();
+void address_sorting_shutdown();
+
+struct address_sorting_source_addr_factory;
+
+/* The interfaces below are exposed only for testing */
+typedef struct {
+  /* Gets the source address that would be used for the passed-in destination
+   * address, and fills in *source_addr* with it if one exists.
+   * Returns true if a source address exists for the destination address,
+   * and false otherwise. */
+  bool (*get_source_addr)(struct address_sorting_source_addr_factory* factory,
+                          const address_sorting_address* dest_addr,
+                          address_sorting_address* source_addr);
+  void (*destroy)(struct address_sorting_source_addr_factory* factory);
+} address_sorting_source_addr_factory_vtable;
+
+typedef struct address_sorting_source_addr_factory {
+  const address_sorting_source_addr_factory_vtable* vtable;
+} address_sorting_source_addr_factory;
+
+/* Platform-compatible address family types */
+typedef enum {
+  ADDRESS_SORTING_AF_INET,
+  ADDRESS_SORTING_AF_INET6,
+  ADDRESS_SORTING_UNKNOWN_FAMILY,
+} address_sorting_family;
+
+/* Indicates whether the address is AF_INET, AF_INET6, or another address
+ * family. */
+address_sorting_family address_sorting_abstract_get_family(
+    const address_sorting_address* address);
+
+void address_sorting_override_source_addr_factory_for_testing(
+    address_sorting_source_addr_factory* factory);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif  // ADDRESS_SORTING_H