dhcp client: main and daemon

Initial skeleten files of main and daemon.

Bug: 25642025
TEST=compile

Change-Id: Ida6b4772de11d2842465b8ae60404691ff43273b

7 files changed, 437 insertions, 0 deletions

diff --git a/NOTICE b/NOTICE
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--- /dev/null
+++ b/NOTICE
@@ -0,0 +1,202 @@
+
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diff --git a/OWNERS b/OWNERS
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--- /dev/null
+++ b/OWNERS
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+set noparent
+nywang@chromium.org
diff --git a/PRESUBMIT.cfg b/PRESUBMIT.cfg
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--- /dev/null
+++ b/PRESUBMIT.cfg
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+[Hook Overrides]
+cros_license_check: false
+aosp_license_check: true
diff --git a/daemon.cc b/daemon.cc
new file mode 100644
index 0000000..195a5e2
--- /dev/null
+++ b/daemon.cc
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+//
+// Copyright (C) 2015 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+#include "dhcp_client/daemon.h"
+
+#include <sysexits.h>
+
+#include <base/logging.h>
+#include <base/message_loop/message_loop_proxy.h>
+#include <base/run_loop.h>
+
+namespace dhcp_client {
+
+Daemon::Daemon(const base::Closure& startup_callback)
+    : startup_callback_(startup_callback) {
+}
+
+int Daemon::OnInit() {
+  int return_code = brillo::Daemon::OnInit();
+  if (return_code != EX_OK) {
+    return return_code;
+  }
+
+  startup_callback_.Run();
+
+  return EX_OK;
+}
+
+void Daemon::OnShutdown(int* return_code) {
+}
+
+}  // namespace dhcp_client
diff --git a/daemon.h b/daemon.h
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+++ b/daemon.h
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+//
+// Copyright (C) 2015 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+#ifndef DHCP_CLIENT_DAEMON_H_
+#define DHCP_CLIENT_DAEMON_H_
+
+#include <base/callback_forward.h>
+#include <brillo/daemons/dbus_daemon.h>
+
+namespace dhcp_client {
+
+class Daemon : public brillo::Daemon {
+ public:
+  explicit Daemon(const base::Closure& startup_callback);
+  ~Daemon() = default;
+
+ protected:
+  int OnInit() override;
+  void OnShutdown(int* return_code) override;
+
+ private:
+  base::Closure startup_callback_;
+
+  DISALLOW_COPY_AND_ASSIGN(Daemon);
+};
+
+}  // namespace dhcp_client
+
+#endif  // DHCP_CLIENT_DAEMON_H_
diff --git a/dhcp_client.gyp b/dhcp_client.gyp
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--- /dev/null
+++ b/dhcp_client.gyp
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+#
+# Copyright (C) 2015 The Android Open Source Project
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+{
+  'target_defaults': {
+    'variables': {
+      'deps': [
+        'libchrome-<(libbase_ver)',
+        'libbrillo-<(libbase_ver)',
+        'libshill-net-<(libbase_ver)',
+      ],
+    },
+    'cflags': [
+      '-Wextra',
+      '-Wno-unused-parameter',  # base/lazy_instance.h, etc.
+    ],
+    'cflags_cc': [
+      '-Wno-missing-field-initializers', # for LAZY_INSTANCE_INITIALIZER
+    ],
+    'include_dirs': [
+      # We need this include dir because we include all the local code as
+      # "dhcp_client/...".
+      '<(platform2_root)/../aosp/system/connectivity',
+    ],
+  },
+
+  'targets': [
+    {
+      'target_name': 'libdhcp_client',
+      'type': 'static_library',
+      'variables': {
+        'exported_deps': [
+        ],
+        'deps': ['<@(exported_deps)'],
+      },
+      'all_dependent_settings': {
+        'variables': {
+          'deps': [
+            '<@(exported_deps)',
+          ],
+        },
+      },
+      'sources': [
+        'daemon.cc',
+      ],
+    },
+    {
+      'target_name': 'dhcp_client',
+      'type': 'executable',
+      'dependencies': ['libdhcp_client'],
+      'sources': [
+        'main.cc',
+      ],
+    },
+  ],
+}
+
diff --git a/main.cc b/main.cc
new file mode 100644
index 0000000..9012bdc
--- /dev/null
+++ b/main.cc
@@ -0,0 +1,73 @@
+//
+// Copyright (C) 2015 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+
+#include <base/command_line.h>
+#include <base/logging.h>
+#include <brillo/syslog_logging.h>
+#include "dhcp_client/daemon.h"
+
+using std::vector;
+
+namespace {
+
+namespace switches {
+
+// Don't daemon()ize; run in foreground.
+const char kForeground[] = "foreground";
+// Flag that causes apmanager to show the help message and exit.
+const char kHelp[] = "help";
+// The help message shown if help flag is passed to the program.
+const char kHelpMessage[] = "\n help message \n";
+
+}  // namespace switches
+
+}  // namespace
+
+// Always logs to the syslog and logs to stderr if
+// we are running in the foreground.
+void SetupLogging(bool foreground,
+                  const char* daemon_name) {
+  int log_flags = 0;
+  log_flags |= brillo::kLogToSyslog;
+  log_flags |= brillo::kLogHeader;
+  if (foreground) {
+    log_flags |= brillo::kLogToStderr;
+  }
+  brillo::InitLog(log_flags);
+}
+
+void OnStartup(const char* daemon_name, base::CommandLine* cl) {
+  LOG(INFO) << __func__;
+  SetupLogging(cl->HasSwitch(switches::kForeground), daemon_name);
+  return;
+}
+
+int main(int argc, char* argv[]) {
+  base::CommandLine::Init(argc, argv);
+  base::CommandLine* cl = base::CommandLine::ForCurrentProcess();
+
+  if (cl->HasSwitch(switches::kHelp)) {
+    LOG(INFO) << switches::kHelpMessage;
+    return 0;
+  }
+
+  dhcp_client::Daemon daemon(base::Bind(&OnStartup, argv[0], cl));
+
+  daemon.Run();
+
+  return 0;
+}