1 //
2 // Copyright (C) 2015 The Android Open Source Project
3 //
4 // Licensed under the Apache License, Version 2.0 (the "License");
5 // you may not use this file except in compliance with the License.
6 // You may obtain a copy of the License at
7 //
8 // http://www.apache.org/licenses/LICENSE-2.0
9 //
10 // Unless required by applicable law or agreed to in writing, software
11 // distributed under the License is distributed on an "AS IS" BASIS,
12 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 // See the License for the specific language governing permissions and
14 // limitations under the License.
15 //
16
17
18 #include <base/command_line.h>
19 #include <base/logging.h>
20 #include <brillo/syslog_logging.h>
21 #include "dhcp_client/daemon.h"
22
23 using std::vector;
24
25 namespace {
26
27 namespace switches {
28
29 // Don't daemon()ize; run in foreground.
30 const char kForeground[] = "foreground";
31 // Flag to show the help message.
32 const char kHelp[] = "help";
33 // The help message shown if help flag is passed to the program.
34 const char kHelpMessage[] = "\n help message \n";
35
36 } // namespace switches
37
38 } // namespace
39
40 // Always logs to the syslog and logs to stderr if
41 // we are running in the foreground.
SetupLogging(bool foreground,const char * daemon_name)42 void SetupLogging(bool foreground,
43 const char* daemon_name) {
44 int log_flags = 0;
45 log_flags |= brillo::kLogToSyslog;
46 log_flags |= brillo::kLogHeader;
47 if (foreground) {
48 log_flags |= brillo::kLogToStderr;
49 }
50 brillo::InitLog(log_flags);
51 }
52
OnStartup(const char * daemon_name,base::CommandLine * cl)53 void OnStartup(const char* daemon_name, base::CommandLine* cl) {
54 LOG(INFO) << __func__;
55 SetupLogging(cl->HasSwitch(switches::kForeground), daemon_name);
56 return;
57 }
58
main(int argc,char * argv[])59 int main(int argc, char* argv[]) {
60 base::CommandLine::Init(argc, argv);
61 base::CommandLine* cl = base::CommandLine::ForCurrentProcess();
62
63 if (cl->HasSwitch(switches::kHelp)) {
64 LOG(INFO) << switches::kHelpMessage;
65 return 0;
66 }
67
68 dhcp_client::Daemon daemon(base::Bind(&OnStartup, argv[0], cl));
69
70 daemon.Run();
71
72 return 0;
73 }
74