Ben Chan | fad4a0b | 2012-04-18 15:49:59 -0700 | [diff] [blame] | 1 | // Copyright (c) 2012 The Chromium OS Authors. All rights reserved. |
Darin Petkov | 50308cd | 2011-06-01 18:25:07 -0700 | [diff] [blame] | 2 | // Use of this source code is governed by a BSD-style license that can be |
| 3 | // found in the LICENSE file. |
| 4 | |
| 5 | #include "shill/dhcpcd_proxy.h" |
| 6 | |
Paul Stewart | 3095c07 | 2012-12-14 08:05:07 -0800 | [diff] [blame] | 7 | #include <dbus/dbus.h> |
| 8 | #include <string.h> |
| 9 | |
Christopher Wiley | b691efd | 2012-08-09 13:51:51 -0700 | [diff] [blame] | 10 | #include <limits> |
Darin Petkov | 50308cd | 2011-06-01 18:25:07 -0700 | [diff] [blame] | 11 | |
Darin Petkov | d1b715b | 2011-06-02 21:21:22 -0700 | [diff] [blame] | 12 | #include "shill/dhcp_provider.h" |
Christopher Wiley | b691efd | 2012-08-09 13:51:51 -0700 | [diff] [blame] | 13 | #include "shill/logging.h" |
Darin Petkov | d1b715b | 2011-06-02 21:21:22 -0700 | [diff] [blame] | 14 | |
| 15 | using std::string; |
Darin Petkov | e7cb7f8 | 2011-06-03 13:21:51 -0700 | [diff] [blame] | 16 | using std::vector; |
Darin Petkov | d1b715b | 2011-06-02 21:21:22 -0700 | [diff] [blame] | 17 | |
Darin Petkov | 50308cd | 2011-06-01 18:25:07 -0700 | [diff] [blame] | 18 | namespace shill { |
| 19 | |
Rebecca Silberstein | c9c31d8 | 2014-10-21 15:01:00 -0700 | [diff] [blame] | 20 | namespace Logging { |
| 21 | static auto kModuleLogScope = ScopeLogger::kDHCP; |
| 22 | static string ObjectID(DHCPCDProxy *d) { return "(dhcpcd_proxy)"; } |
| 23 | } |
| 24 | |
Darin Petkov | 50308cd | 2011-06-01 18:25:07 -0700 | [diff] [blame] | 25 | const char DHCPCDProxy::kDBusInterfaceName[] = "org.chromium.dhcpcd"; |
| 26 | const char DHCPCDProxy::kDBusPath[] = "/org/chromium/dhcpcd"; |
| 27 | |
Darin Petkov | aceede3 | 2011-07-18 15:32:38 -0700 | [diff] [blame] | 28 | DHCPCDListener::DHCPCDListener(DBus::Connection *connection, |
| 29 | DHCPProvider *provider) |
| 30 | : proxy_(connection, provider) {} |
| 31 | |
| 32 | DHCPCDListener::Proxy::Proxy(DBus::Connection *connection, |
| 33 | DHCPProvider *provider) |
Darin Petkov | 50308cd | 2011-06-01 18:25:07 -0700 | [diff] [blame] | 34 | : DBus::InterfaceProxy(DHCPCDProxy::kDBusInterfaceName), |
Darin Petkov | d1b715b | 2011-06-02 21:21:22 -0700 | [diff] [blame] | 35 | DBus::ObjectProxy(*connection, DHCPCDProxy::kDBusPath), |
| 36 | provider_(provider) { |
Rebecca Silberstein | c9c31d8 | 2014-10-21 15:01:00 -0700 | [diff] [blame] | 37 | SLOG(DHCP, nullptr, 2) << __func__; |
Darin Petkov | aceede3 | 2011-07-18 15:32:38 -0700 | [diff] [blame] | 38 | connect_signal(DHCPCDListener::Proxy, Event, EventSignal); |
| 39 | connect_signal(DHCPCDListener::Proxy, StatusChanged, StatusChangedSignal); |
Darin Petkov | 50308cd | 2011-06-01 18:25:07 -0700 | [diff] [blame] | 40 | } |
| 41 | |
Ben Chan | 5ea763b | 2014-08-13 11:07:54 -0700 | [diff] [blame] | 42 | DHCPCDListener::Proxy::~Proxy() {} |
| 43 | |
Darin Petkov | aceede3 | 2011-07-18 15:32:38 -0700 | [diff] [blame] | 44 | void DHCPCDListener::Proxy::EventSignal(const DBus::SignalMessage &signal) { |
Rebecca Silberstein | c9c31d8 | 2014-10-21 15:01:00 -0700 | [diff] [blame] | 45 | SLOG(DBus, nullptr, 2) << __func__; |
Darin Petkov | 50308cd | 2011-06-01 18:25:07 -0700 | [diff] [blame] | 46 | DBus::MessageIter ri = signal.reader(); |
Christopher Wiley | b691efd | 2012-08-09 13:51:51 -0700 | [diff] [blame] | 47 | unsigned int pid = std::numeric_limits<unsigned int>::max(); |
Gary Morain | 610977f | 2012-05-04 16:03:52 -0700 | [diff] [blame] | 48 | try { |
| 49 | ri >> pid; |
| 50 | } catch (const DBus::Error &e) { |
| 51 | LOG(FATAL) << "DBus exception: " << e.name() << ": " << e.what() |
| 52 | << " interface: " << signal.interface() |
| 53 | << " member: " << signal.member() << " path: " << signal.path(); |
| 54 | } |
Rebecca Silberstein | c9c31d8 | 2014-10-21 15:01:00 -0700 | [diff] [blame] | 55 | SLOG(DHCP, nullptr, 2) << "sender(" << signal.sender() |
| 56 | << ") pid(" << pid << ")"; |
Darin Petkov | d1b715b | 2011-06-02 21:21:22 -0700 | [diff] [blame] | 57 | |
| 58 | DHCPConfigRefPtr config = provider_->GetConfig(pid); |
| 59 | if (!config.get()) { |
| 60 | LOG(ERROR) << "Unknown DHCP client PID " << pid; |
| 61 | return; |
| 62 | } |
Darin Petkov | aceede3 | 2011-07-18 15:32:38 -0700 | [diff] [blame] | 63 | config->InitProxy(signal.sender()); |
Darin Petkov | e7cb7f8 | 2011-06-03 13:21:51 -0700 | [diff] [blame] | 64 | |
| 65 | string reason; |
Gary Morain | 610977f | 2012-05-04 16:03:52 -0700 | [diff] [blame] | 66 | try { |
Darin Petkov | e7cb7f8 | 2011-06-03 13:21:51 -0700 | [diff] [blame] | 67 | ri >> reason; |
Gary Morain | 610977f | 2012-05-04 16:03:52 -0700 | [diff] [blame] | 68 | } catch (const DBus::Error &e) { |
| 69 | LOG(FATAL) << "DBus exception: " << e.name() << ": " << e.what() |
| 70 | << " interface: " << signal.interface() |
| 71 | << " member: " << signal.member() << " path: " << signal.path(); |
| 72 | } |
Darin Petkov | e7cb7f8 | 2011-06-03 13:21:51 -0700 | [diff] [blame] | 73 | DHCPConfig::Configuration configuration; |
Gary Morain | 610977f | 2012-05-04 16:03:52 -0700 | [diff] [blame] | 74 | try { |
| 75 | ri >> configuration; |
| 76 | } catch (const DBus::Error &e) { |
| 77 | LOG(FATAL) << "DBus exception: " << e.name() << ": " << e.what() |
| 78 | << " interface: " << signal.interface() |
| 79 | << " member: " << signal.member() << " path: " << signal.path(); |
| 80 | } |
Darin Petkov | e7cb7f8 | 2011-06-03 13:21:51 -0700 | [diff] [blame] | 81 | config->ProcessEventSignal(reason, configuration); |
Darin Petkov | 50308cd | 2011-06-01 18:25:07 -0700 | [diff] [blame] | 82 | } |
| 83 | |
Darin Petkov | aceede3 | 2011-07-18 15:32:38 -0700 | [diff] [blame] | 84 | void DHCPCDListener::Proxy::StatusChangedSignal( |
| 85 | const DBus::SignalMessage &signal) { |
Rebecca Silberstein | c9c31d8 | 2014-10-21 15:01:00 -0700 | [diff] [blame] | 86 | SLOG(DBus, nullptr, 2) << __func__; |
Darin Petkov | 50308cd | 2011-06-01 18:25:07 -0700 | [diff] [blame] | 87 | DBus::MessageIter ri = signal.reader(); |
Christopher Wiley | b691efd | 2012-08-09 13:51:51 -0700 | [diff] [blame] | 88 | unsigned int pid = std::numeric_limits<unsigned int>::max(); |
Gary Morain | 610977f | 2012-05-04 16:03:52 -0700 | [diff] [blame] | 89 | try { |
| 90 | ri >> pid; |
| 91 | } catch (const DBus::Error &e) { |
| 92 | LOG(FATAL) << "DBus exception: " << e.name() << ": " << e.what() |
| 93 | << " interface: " << signal.interface() |
| 94 | << " member: " << signal.member() << " path: " << signal.path(); |
| 95 | } |
Rebecca Silberstein | c9c31d8 | 2014-10-21 15:01:00 -0700 | [diff] [blame] | 96 | SLOG(DHCP, nullptr, 2) << "sender(" << signal.sender() |
| 97 | << ") pid(" << pid << ")"; |
Darin Petkov | d1b715b | 2011-06-02 21:21:22 -0700 | [diff] [blame] | 98 | |
| 99 | // Accept StatusChanged signals just to get the sender address and create an |
| 100 | // appropriate proxy for the PID/sender pair. |
| 101 | DHCPConfigRefPtr config = provider_->GetConfig(pid); |
| 102 | if (!config.get()) { |
| 103 | LOG(ERROR) << "Unknown DHCP client PID " << pid; |
| 104 | return; |
| 105 | } |
Darin Petkov | aceede3 | 2011-07-18 15:32:38 -0700 | [diff] [blame] | 106 | config->InitProxy(signal.sender()); |
Paul Stewart | 3bdf1ab | 2014-07-17 19:22:26 -0700 | [diff] [blame] | 107 | |
| 108 | string status; |
| 109 | try { |
| 110 | ri >> status; |
| 111 | } catch (const DBus::Error &e) { |
| 112 | LOG(FATAL) << "DBus exception: " << e.name() << ": " << e.what() |
| 113 | << " interface: " << signal.interface() |
| 114 | << " member: " << signal.member() << " path: " << signal.path(); |
| 115 | } |
| 116 | config->ProcessStatusChangeSignal(status); |
Darin Petkov | 50308cd | 2011-06-01 18:25:07 -0700 | [diff] [blame] | 117 | } |
| 118 | |
Darin Petkov | a7b8949 | 2011-07-27 12:48:17 -0700 | [diff] [blame] | 119 | DHCPCDProxy::DHCPCDProxy(DBus::Connection *connection, const string &service) |
Darin Petkov | aceede3 | 2011-07-18 15:32:38 -0700 | [diff] [blame] | 120 | : proxy_(connection, service) { |
Rebecca Silberstein | c9c31d8 | 2014-10-21 15:01:00 -0700 | [diff] [blame] | 121 | SLOG(this, 2) << "DHCPCDProxy(service=" << service << ")."; |
Darin Petkov | aceede3 | 2011-07-18 15:32:38 -0700 | [diff] [blame] | 122 | } |
Darin Petkov | 50308cd | 2011-06-01 18:25:07 -0700 | [diff] [blame] | 123 | |
Darin Petkov | aceede3 | 2011-07-18 15:32:38 -0700 | [diff] [blame] | 124 | void DHCPCDProxy::Rebind(const string &interface) { |
Rebecca Silberstein | c9c31d8 | 2014-10-21 15:01:00 -0700 | [diff] [blame] | 125 | SLOG(DBus, nullptr, 2) << __func__; |
Gary Morain | 610977f | 2012-05-04 16:03:52 -0700 | [diff] [blame] | 126 | try { |
| 127 | proxy_.Rebind(interface); |
| 128 | } catch (const DBus::Error &e) { |
| 129 | LOG(FATAL) << "DBus exception: " << e.name() << ": " << e.what() |
| 130 | << " interface: " << interface; |
| 131 | } |
Darin Petkov | aceede3 | 2011-07-18 15:32:38 -0700 | [diff] [blame] | 132 | } |
| 133 | |
| 134 | void DHCPCDProxy::Release(const string &interface) { |
Rebecca Silberstein | c9c31d8 | 2014-10-21 15:01:00 -0700 | [diff] [blame] | 135 | SLOG(DBus, nullptr, 2) << __func__; |
Gary Morain | 610977f | 2012-05-04 16:03:52 -0700 | [diff] [blame] | 136 | try { |
| 137 | proxy_.Release(interface); |
| 138 | } catch (const DBus::Error &e) { |
Paul Stewart | f7f7ce7 | 2012-12-14 08:05:07 -0800 | [diff] [blame] | 139 | if (!strcmp(e.name(), DBUS_ERROR_SERVICE_UNKNOWN) || |
| 140 | !strcmp(e.name(), DBUS_ERROR_NO_REPLY)) { |
Paul Stewart | 3095c07 | 2012-12-14 08:05:07 -0800 | [diff] [blame] | 141 | LOG(ERROR) << "dhcpcd daemon appears to have already exited."; |
| 142 | } else { |
| 143 | LOG(FATAL) << "DBus exception: " << e.name() << ": " << e.what() |
| 144 | << " interface: " << interface; |
| 145 | } |
Gary Morain | 610977f | 2012-05-04 16:03:52 -0700 | [diff] [blame] | 146 | } |
Darin Petkov | aceede3 | 2011-07-18 15:32:38 -0700 | [diff] [blame] | 147 | } |
| 148 | |
| 149 | DHCPCDProxy::Proxy::Proxy(DBus::Connection *connection, |
Darin Petkov | a7b8949 | 2011-07-27 12:48:17 -0700 | [diff] [blame] | 150 | const string &service) |
| 151 | : DBus::ObjectProxy(*connection, kDBusPath, service.c_str()) { |
Darin Petkov | 50308cd | 2011-06-01 18:25:07 -0700 | [diff] [blame] | 152 | // Don't catch signals directly in this proxy because they will be dispatched |
Darin Petkov | aceede3 | 2011-07-18 15:32:38 -0700 | [diff] [blame] | 153 | // to the client by the DHCPCD listener. |
Darin Petkov | 50308cd | 2011-06-01 18:25:07 -0700 | [diff] [blame] | 154 | _signals.erase("Event"); |
| 155 | _signals.erase("StatusChanged"); |
| 156 | } |
| 157 | |
Darin Petkov | a7b8949 | 2011-07-27 12:48:17 -0700 | [diff] [blame] | 158 | DHCPCDProxy::Proxy::~Proxy() {} |
| 159 | |
mukesh agrawal | 1830fa1 | 2011-09-26 14:31:40 -0700 | [diff] [blame] | 160 | void DHCPCDProxy::Proxy::Event( |
| 161 | const uint32_t &/*pid*/, |
| 162 | const std::string &/*reason*/, |
| 163 | const DHCPConfig::Configuration &/*configuration*/) { |
Rebecca Silberstein | c9c31d8 | 2014-10-21 15:01:00 -0700 | [diff] [blame] | 164 | SLOG(DBus, nullptr, 2) << __func__; |
Darin Petkov | d1b715b | 2011-06-02 21:21:22 -0700 | [diff] [blame] | 165 | NOTREACHED(); |
Darin Petkov | 50308cd | 2011-06-01 18:25:07 -0700 | [diff] [blame] | 166 | } |
| 167 | |
mukesh agrawal | 1830fa1 | 2011-09-26 14:31:40 -0700 | [diff] [blame] | 168 | void DHCPCDProxy::Proxy::StatusChanged(const uint32_t &/*pid*/, |
| 169 | const std::string &/*status*/) { |
Rebecca Silberstein | c9c31d8 | 2014-10-21 15:01:00 -0700 | [diff] [blame] | 170 | SLOG(DBus, nullptr, 2) << __func__; |
Darin Petkov | d1b715b | 2011-06-02 21:21:22 -0700 | [diff] [blame] | 171 | NOTREACHED(); |
Darin Petkov | 50308cd | 2011-06-01 18:25:07 -0700 | [diff] [blame] | 172 | } |
| 173 | |
| 174 | } // namespace shill |