shill: Create an asynchronous resolver object
Resolve DNS requests using the c-ares library but
using the shill event loop to handle events.
BUG=chromium-os:21664
TEST=New unit test
Change-Id: I99776b6cc74977d31198c67357c42a75f4047942
Reviewed-on: https://gerrit.chromium.org/gerrit/10328
Reviewed-by: Chris Masone <cmasone@chromium.org>
Tested-by: Paul Stewart <pstew@chromium.org>
diff --git a/shill_ares.cc b/shill_ares.cc
new file mode 100644
index 0000000..cdede2c
--- /dev/null
+++ b/shill_ares.cc
@@ -0,0 +1,60 @@
+// Copyright (c) 2011 The Chromium OS Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "shill/shill_ares.h"
+
+namespace shill {
+
+static base::LazyInstance<Ares> g_ares(base::LINKER_INITIALIZED);
+
+Ares::Ares() { }
+
+Ares::~Ares() { }
+
+Ares* Ares::GetInstance() {
+ return g_ares.Pointer();
+}
+
+void Ares::Destroy(ares_channel channel) {
+ ares_destroy(channel);
+}
+
+void Ares::GetHostByName(ares_channel channel,
+ const char *hostname,
+ int family,
+ ares_host_callback callback,
+ void *arg) {
+ ares_gethostbyname(channel, hostname, family, callback, arg);
+}
+
+int Ares::GetSock(ares_channel channel,
+ ares_socket_t *socks,
+ int numsocks) {
+ return ares_getsock(channel, socks, numsocks);
+}
+
+int Ares::InitOptions(ares_channel *channelptr,
+ struct ares_options *options,
+ int optmask) {
+ return ares_init_options(channelptr, options, optmask);
+}
+
+
+void Ares::ProcessFd(ares_channel channel,
+ ares_socket_t read_fd,
+ ares_socket_t write_fd) {
+ return ares_process_fd(channel, read_fd, write_fd);
+}
+
+void Ares::SetLocalDev(ares_channel channel, const char *local_dev_name) {
+ ares_set_local_dev(channel, local_dev_name);
+}
+
+struct timeval *Ares::Timeout(ares_channel channel,
+ struct timeval *maxtv,
+ struct timeval *tv) {
+ return ares_timeout(channel, maxtv, tv);
+}
+
+} // namespace shill