blob: d131618b7f230810ac883893909002438e9bc9f7 [file] [log] [blame]
mukesh agrawal43500062012-02-09 18:25:15 -08001// Copyright (c) 2012 The Chromium OS Authors. All rights reserved.
Paul Stewart75897df2011-04-27 09:05:53 -07002// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file.
4
mukesh agrawal7eb02892012-05-29 11:22:37 -07005#include <errno.h>
Ben Chan03ed8182012-04-19 20:39:27 -07006#include <glib-unix.h>
mukesh agrawal7eb02892012-05-29 11:22:37 -07007#include <stdio.h>
Paul Stewart75897df2011-04-27 09:05:53 -07008#include <time.h>
Gaurav Shahb893bed2011-11-28 19:37:16 -08009#include <unistd.h>
10
Paul Stewart75897df2011-04-27 09:05:53 -070011#include <string>
mukesh agrawal8f317b62011-07-15 11:53:23 -070012#include <vector>
Paul Stewart75897df2011-04-27 09:05:53 -070013
Chris Masone0e1d1042011-05-09 18:07:03 -070014#include <base/at_exit.h>
Chris Masoneee929b72011-05-10 10:02:18 -070015#include <base/command_line.h>
16#include <base/file_path.h>
Chris Masone7ccc8192011-05-24 14:54:49 -070017#include <base/string_number_conversions.h>
mukesh agrawal8f317b62011-07-15 11:53:23 -070018#include <base/string_split.h>
Chris Masoneee929b72011-05-10 10:02:18 -070019#include <chromeos/syslog_logging.h>
20
Paul Stewart75897df2011-04-27 09:05:53 -070021#include "shill/dbus_control.h"
Christopher Wileyb691efd2012-08-09 13:51:51 -070022#include "shill/logging.h"
Jorge Lucangeli Obes8c1706f2012-08-30 15:30:48 -070023#include "shill/minijail.h"
Darin Petkov633ac6f2011-07-08 13:56:13 -070024#include "shill/shill_config.h"
Darin Petkovd1b715b2011-06-02 21:21:22 -070025#include "shill/shill_daemon.h"
Paul Stewart75897df2011-04-27 09:05:53 -070026
Albert Chaulk0e1cdea2013-02-27 15:32:55 -080027using base::FilePath;
Paul Stewart75897df2011-04-27 09:05:53 -070028using std::string;
mukesh agrawal8f317b62011-07-15 11:53:23 -070029using std::vector;
Paul Stewart75897df2011-04-27 09:05:53 -070030
Chris Masoneee929b72011-05-10 10:02:18 -070031namespace switches {
32
33// Don't daemon()ize; run in foreground.
34static const char kForeground[] = "foreground";
35// Directory to read confguration settings.
36static const char kConfigDir[] = "config-dir";
37// Directory to read default configuration settings (Read Only).
38static const char kDefaultConfigDir[] = "default-config-dir";
mukesh agrawal8f317b62011-07-15 11:53:23 -070039// Don't attempt to manage these devices.
40static const char kDeviceBlackList[] = "device-black-list";
Paul Stewart10e9e4e2012-04-26 19:46:28 -070041// Technologies to enable for portal check at startup.
42static const char kPortalList[] = "portal-list";
Chris Masoneee929b72011-05-10 10:02:18 -070043// Flag that causes shill to show the help message and exit.
44static const char kHelp[] = "help";
Ben Chan156e73f2012-04-20 12:02:10 -070045// Logging level:
46// 0 = LOG(INFO), 1 = LOG(WARNING), 2 = LOG(ERROR),
47// -1 = SLOG(..., 1), -2 = SLOG(..., 2), etc.
Chris Masone7ccc8192011-05-24 14:54:49 -070048static const char kLogLevel[] = "log-level";
Ben Chan156e73f2012-04-20 12:02:10 -070049// Scopes to enable for SLOG()-based logging.
50static const char kLogScopes[] = "log-scopes";
Darin Petkov4f5e5492012-04-18 14:05:55 +020051// Use the same directories flimflam uses (profiles, run dir...)
52static const char kUseFlimflamDirs[] = "use-flimflam-dirs";
Chris Masoneee929b72011-05-10 10:02:18 -070053
54// The help message shown if help flag is passed to the program.
55static const char kHelpMessage[] = "\n"
56 "Available Switches: \n"
57 " --foreground\n"
58 " Don\'t daemon()ize; run in foreground.\n"
mukesh agrawal8f317b62011-07-15 11:53:23 -070059 " --config-dir\n"
Chris Masoneee929b72011-05-10 10:02:18 -070060 " Directory to read confguration settings.\n"
mukesh agrawal8f317b62011-07-15 11:53:23 -070061 " --default-config-dir\n"
62 " Directory to read default configuration settings (Read Only).\n"
63 " --device-black-list=device1,device2\n"
64 " Do not manage devices named device1 or device2\n"
Chris Masone7ccc8192011-05-24 14:54:49 -070065 " --log-level=N\n"
Ben Chan156e73f2012-04-20 12:02:10 -070066 " Logging level:\n"
67 " 0 = LOG(INFO), 1 = LOG(WARNING), 2 = LOG(ERROR),\n"
68 " -1 = SLOG(..., 1), -2 = SLOG(..., 2), etc.\n"
69 " --log-scopes=\"*scope1+scope2\".\n"
70 " Scopes to enable for SLOG()-based logging.\n"
Paul Stewart10e9e4e2012-04-26 19:46:28 -070071 " --portal-list=technology1,technology2\n"
72 " Specify technologies to perform portal detection on at startup.\n"
Darin Petkov4f5e5492012-04-18 14:05:55 +020073 " --use-flimflam-dirs\n"
Ben Chan156e73f2012-04-20 12:02:10 -070074 " Use the same directories flimflam uses (profiles, run dir...).\n";
Chris Masoneee929b72011-05-10 10:02:18 -070075} // namespace switches
76
mukesh agrawal7eb02892012-05-29 11:22:37 -070077namespace {
78
79const char *kLoggerCommand = "/usr/bin/logger";
Jorge Lucangeli Obes8c1706f2012-08-30 15:30:48 -070080const char *kLoggerUser = "syslog";
mukesh agrawal7eb02892012-05-29 11:22:37 -070081
82} // namespace
83
Chris Masoneee929b72011-05-10 10:02:18 -070084// Always logs to the syslog and logs to stderr if
85// we are running in the foreground.
mukesh agrawal7eb02892012-05-29 11:22:37 -070086void SetupLogging(bool foreground, char *daemon_name) {
Chris Masoneee929b72011-05-10 10:02:18 -070087 int log_flags = 0;
88 log_flags |= chromeos::kLogToSyslog;
mukesh agrawal43500062012-02-09 18:25:15 -080089 log_flags |= chromeos::kLogHeader;
Chris Masoneee929b72011-05-10 10:02:18 -070090 if (foreground) {
91 log_flags |= chromeos::kLogToStderr;
92 }
93 chromeos::InitLog(log_flags);
mukesh agrawal7eb02892012-05-29 11:22:37 -070094
95 if (!foreground) {
96 vector<char *> logger_command_line;
97 int logger_stdin_fd;
98 logger_command_line.push_back(const_cast<char *>(kLoggerCommand));
99 logger_command_line.push_back(const_cast<char *>("--priority"));
100 logger_command_line.push_back(const_cast<char *>("daemon.err"));
101 logger_command_line.push_back(const_cast<char *>("--tag"));
102 logger_command_line.push_back(daemon_name);
103 logger_command_line.push_back(NULL);
Jorge Lucangeli Obes8c1706f2012-08-30 15:30:48 -0700104
105 shill::Minijail *minijail = shill::Minijail::GetInstance();
106 struct minijail *jail = minijail->New();
107 minijail->DropRoot(jail, kLoggerUser);
108
109 if (!minijail->RunPipeAndDestroy(jail, logger_command_line,
110 NULL, &logger_stdin_fd)) {
mukesh agrawal7eb02892012-05-29 11:22:37 -0700111 LOG(ERROR) << "Unable to spawn logger. "
112 << "Writes to stderr will be discarded.";
113 return;
114 }
115
116 // Note that we don't set O_CLOEXEC here. This means that stderr
117 // from any child processes will, by default, be logged to syslog.
118 if (dup2(logger_stdin_fd, fileno(stderr)) != fileno(stderr)) {
119 LOG(ERROR) << "Failed to redirect stderr to syslog: "
120 << strerror(errno);
121 }
122 close(logger_stdin_fd);
123 }
Chris Masoneee929b72011-05-10 10:02:18 -0700124}
125
Thieu Leb52d6ff2011-11-02 18:21:51 +0000126void DeleteDBusControl(void* param) {
Ben Chanfad4a0b2012-04-18 15:49:59 -0700127 SLOG(DBus, 2) << __func__;
Thieu Leb52d6ff2011-11-02 18:21:51 +0000128 shill::DBusControl* dbus_control =
129 reinterpret_cast<shill::DBusControl*>(param);
130 delete dbus_control;
131}
132
Thieu Le1271d682011-11-02 22:48:19 +0000133gboolean ExitSigHandler(gpointer data) {
Paul Stewart63864b62012-11-07 15:10:55 -0800134 LOG(INFO) << "Shutting down due to received signal.";
Thieu Le1271d682011-11-02 22:48:19 +0000135 shill::Daemon* daemon = reinterpret_cast<shill::Daemon*>(data);
136 daemon->Quit();
137 return TRUE;
138}
139
Chris Masoneee929b72011-05-10 10:02:18 -0700140
141int main(int argc, char** argv) {
Chris Masone0e1d1042011-05-09 18:07:03 -0700142 base::AtExitManager exit_manager;
Chris Masoneee929b72011-05-10 10:02:18 -0700143 CommandLine::Init(argc, argv);
144 CommandLine* cl = CommandLine::ForCurrentProcess();
145
Chris Masoneee929b72011-05-10 10:02:18 -0700146 if (cl->HasSwitch(switches::kHelp)) {
147 LOG(INFO) << switches::kHelpMessage;
148 return 0;
Paul Stewart75897df2011-04-27 09:05:53 -0700149 }
Paul Stewartb7163252011-12-09 16:21:30 -0800150
151 const int nochdir = 0, noclose = 0;
152 if (!cl->HasSwitch(switches::kForeground))
153 PLOG_IF(FATAL, daemon(nochdir, noclose) == -1 ) << "Failed to daemonize";
154
mukesh agrawal7eb02892012-05-29 11:22:37 -0700155 SetupLogging(cl->HasSwitch(switches::kForeground), argv[0]);
Chris Masone7ccc8192011-05-24 14:54:49 -0700156 if (cl->HasSwitch(switches::kLogLevel)) {
mukesh agrawal7eb02892012-05-29 11:22:37 -0700157 string log_level = cl->GetSwitchValueASCII(switches::kLogLevel);
Chris Masone7ccc8192011-05-24 14:54:49 -0700158 int level = 0;
159 if (base::StringToInt(log_level, &level) &&
Ben Chan156e73f2012-04-20 12:02:10 -0700160 level < logging::LOG_NUM_SEVERITIES) {
Chris Masone7ccc8192011-05-24 14:54:49 -0700161 logging::SetMinLogLevel(level);
Ben Chan156e73f2012-04-20 12:02:10 -0700162 // Like VLOG, SLOG uses negative verbose level.
163 shill::ScopeLogger::GetInstance()->set_verbose_level(-level);
Chris Masone7ccc8192011-05-24 14:54:49 -0700164 } else {
165 LOG(WARNING) << "Bad log level: " << log_level;
166 }
167 }
Paul Stewart75897df2011-04-27 09:05:53 -0700168
Ben Chan156e73f2012-04-20 12:02:10 -0700169 if (cl->HasSwitch(switches::kLogScopes)) {
mukesh agrawal7eb02892012-05-29 11:22:37 -0700170 string log_scopes = cl->GetSwitchValueASCII(switches::kLogScopes);
Ben Chan156e73f2012-04-20 12:02:10 -0700171 shill::ScopeLogger::GetInstance()->EnableScopesByName(log_scopes);
172 }
173
Chris Masoneee929b72011-05-10 10:02:18 -0700174 FilePath config_dir(cl->GetSwitchValueASCII(switches::kConfigDir));
175 FilePath default_config_dir(
176 !cl->HasSwitch(switches::kDefaultConfigDir) ?
177 shill::Config::kShillDefaultPrefsDir :
178 cl->GetSwitchValueASCII(switches::kDefaultConfigDir));
Paul Stewart75897df2011-04-27 09:05:53 -0700179
Paul Stewart75897df2011-04-27 09:05:53 -0700180 shill::Config config; /* (config_dir, default_config_dir) */
Darin Petkov4f5e5492012-04-18 14:05:55 +0200181 if (cl->HasSwitch(switches::kUseFlimflamDirs))
182 config.UseFlimflamDirs();
Paul Stewart75897df2011-04-27 09:05:53 -0700183
Darin Petkovaceede32011-07-18 15:32:38 -0700184 // TODO(pstew): This should be chosen based on config
Thieu Leb52d6ff2011-11-02 18:21:51 +0000185 // Make sure we delete the DBusControl object AFTER the LazyInstances
186 // since some LazyInstances destructors rely on D-Bus being around.
187 shill::DBusControl* dbus_control = new shill::DBusControl();
188 exit_manager.RegisterCallback(DeleteDBusControl, dbus_control);
Darin Petkovaceede32011-07-18 15:32:38 -0700189 dbus_control->Init();
190
Thieu Leb52d6ff2011-11-02 18:21:51 +0000191 shill::Daemon daemon(&config, dbus_control);
mukesh agrawal8f317b62011-07-15 11:53:23 -0700192
193 if (cl->HasSwitch(switches::kDeviceBlackList)) {
194 vector<string> device_list;
195 base::SplitString(cl->GetSwitchValueASCII(switches::kDeviceBlackList),
196 ',', &device_list);
197
198 vector<string>::iterator i;
199 for (i = device_list.begin(); i != device_list.end(); ++i) {
200 daemon.AddDeviceToBlackList(*i);
201 }
202 }
Thieu Le1271d682011-11-02 22:48:19 +0000203
Paul Stewart10e9e4e2012-04-26 19:46:28 -0700204 if (cl->HasSwitch(switches::kPortalList)) {
205 daemon.SetStartupPortalList(cl->GetSwitchValueASCII(switches::kPortalList));
206 }
207
Thieu Le1271d682011-11-02 22:48:19 +0000208 g_unix_signal_add(SIGINT, ExitSigHandler, &daemon);
209 g_unix_signal_add(SIGTERM, ExitSigHandler, &daemon);
210
Paul Stewart75897df2011-04-27 09:05:53 -0700211 daemon.Run();
212
213 return 0;
214}