rspangler@google.com | 570c65b | 2009-10-09 20:56:14 +0000 | [diff] [blame] | 1 | // Copyright (c) 2009 The Chromium OS Authors. All rights reserved. |
| 2 | // Use of this source code is governed by a BSD-style license that can be |
| 3 | // found in the LICENSE file. |
| 4 | |
Alex Vakulenko | 9ed0cab | 2015-10-12 15:21:28 -0700 | [diff] [blame^] | 5 | #ifndef LIBCHROMEOS_BRILLO_GLIB_DBUS_H_ |
| 6 | #define LIBCHROMEOS_BRILLO_GLIB_DBUS_H_ |
rspangler@google.com | 570c65b | 2009-10-09 20:56:14 +0000 | [diff] [blame] | 7 | |
| 8 | #include <dbus/dbus-glib.h> |
| 9 | #include <glib-object.h> |
rspangler@google.com | 570c65b | 2009-10-09 20:56:14 +0000 | [diff] [blame] | 10 | |
| 11 | #include <algorithm> |
| 12 | #include <string> |
| 13 | |
seanparent@google.com | f2ea024 | 2009-11-04 21:04:51 +0000 | [diff] [blame] | 14 | #include "base/logging.h" |
Alex Vakulenko | 9ed0cab | 2015-10-12 15:21:28 -0700 | [diff] [blame^] | 15 | #include <brillo/brillo_export.h> |
| 16 | #include <brillo/glib/object.h> |
rspangler@google.com | 570c65b | 2009-10-09 20:56:14 +0000 | [diff] [blame] | 17 | |
Denis Glotov | 8a93c90 | 2011-02-11 22:32:49 +0300 | [diff] [blame] | 18 | struct DBusMessage; |
| 19 | struct DBusConnection; |
| 20 | |
Alex Vakulenko | 9ed0cab | 2015-10-12 15:21:28 -0700 | [diff] [blame^] | 21 | namespace brillo { |
rspangler@google.com | 570c65b | 2009-10-09 20:56:14 +0000 | [diff] [blame] | 22 | |
| 23 | // \precondition No functions in the dbus namespace can be called before |
| 24 | // ::g_type_init(); |
| 25 | |
| 26 | namespace dbus { |
| 27 | |
| 28 | // \brief BusConnection manages the ref-count for a ::DBusGConnection*. |
| 29 | // |
| 30 | // A BusConnection has reference semantics bound to a particular communication |
| 31 | // bus. |
| 32 | // |
| 33 | // \models Copyable, Assignable |
| 34 | // \related GetSystemBusConnection() |
| 35 | |
Alex Vakulenko | 9ed0cab | 2015-10-12 15:21:28 -0700 | [diff] [blame^] | 36 | class BRILLO_EXPORT BusConnection { |
rspangler@google.com | 570c65b | 2009-10-09 20:56:14 +0000 | [diff] [blame] | 37 | public: |
| 38 | typedef ::DBusGConnection* value_type; |
| 39 | |
Alex Vakulenko | 05d2904 | 2015-01-13 09:39:25 -0800 | [diff] [blame] | 40 | BusConnection(const BusConnection& x) : object_(x.object_) { |
Yusuke Sato | 35371c8 | 2010-06-23 19:04:02 +0900 | [diff] [blame] | 41 | if (object_) |
| 42 | ::dbus_g_connection_ref(object_); |
rspangler@google.com | 570c65b | 2009-10-09 20:56:14 +0000 | [diff] [blame] | 43 | } |
| 44 | |
| 45 | ~BusConnection() { |
Yusuke Sato | 35371c8 | 2010-06-23 19:04:02 +0900 | [diff] [blame] | 46 | if (object_) |
| 47 | ::dbus_g_connection_unref(object_); |
rspangler@google.com | 570c65b | 2009-10-09 20:56:14 +0000 | [diff] [blame] | 48 | } |
| 49 | |
| 50 | BusConnection& operator=(BusConnection x) { |
| 51 | swap(*this, x); |
| 52 | return *this; |
| 53 | } |
| 54 | |
Yusuke Sato | f805981 | 2010-01-09 20:13:07 +0900 | [diff] [blame] | 55 | const value_type& g_connection() const { |
| 56 | DCHECK(object_) << "referencing an empty connection"; |
| 57 | return object_; |
| 58 | } |
| 59 | |
Alex Vakulenko | 05d2904 | 2015-01-13 09:39:25 -0800 | [diff] [blame] | 60 | operator bool() const { return object_; } |
Yusuke Sato | 35371c8 | 2010-06-23 19:04:02 +0900 | [diff] [blame] | 61 | |
Alex Vakulenko | 05d2904 | 2015-01-13 09:39:25 -0800 | [diff] [blame] | 62 | bool HasConnection() const { return object_; } |
Yusuke Sato | 35371c8 | 2010-06-23 19:04:02 +0900 | [diff] [blame] | 63 | |
rspangler@google.com | 570c65b | 2009-10-09 20:56:14 +0000 | [diff] [blame] | 64 | private: |
| 65 | friend void swap(BusConnection& x, BusConnection& y); |
| 66 | |
| 67 | friend class Proxy; |
| 68 | friend BusConnection GetSystemBusConnection(); |
Yusuke Sato | 71da5ce | 2009-12-15 10:29:43 +0900 | [diff] [blame] | 69 | friend BusConnection GetPrivateBusConnection(const char* address); |
rspangler@google.com | 570c65b | 2009-10-09 20:56:14 +0000 | [diff] [blame] | 70 | |
| 71 | // Constructor takes ownership |
Alex Vakulenko | 9ed0cab | 2015-10-12 15:21:28 -0700 | [diff] [blame^] | 72 | BRILLO_PRIVATE explicit BusConnection(::DBusGConnection* x) : object_(x) {} |
rspangler@google.com | 570c65b | 2009-10-09 20:56:14 +0000 | [diff] [blame] | 73 | |
| 74 | value_type object_; |
| 75 | }; |
| 76 | |
| 77 | inline void swap(BusConnection& x, BusConnection& y) { |
| 78 | std::swap(x.object_, y.object_); |
| 79 | } |
| 80 | |
| 81 | // \brief Proxy manages the ref-count for a ::DBusGProxy*. |
| 82 | // |
| 83 | // Proxy has reference semantics and represents a connection to on object on |
| 84 | // the bus. A proxy object is constructed with a connection to a bus, a name |
| 85 | // to an entity on the bus, a path to an object owned by the entity, and an |
| 86 | // interface protocol name used to communicate with the object. |
| 87 | |
Alex Vakulenko | 9ed0cab | 2015-10-12 15:21:28 -0700 | [diff] [blame^] | 88 | class BRILLO_EXPORT Proxy { |
rspangler@google.com | 570c65b | 2009-10-09 20:56:14 +0000 | [diff] [blame] | 89 | public: |
| 90 | typedef ::DBusGProxy* value_type; |
| 91 | |
Alex Vakulenko | 847b871 | 2014-08-29 10:43:06 -0700 | [diff] [blame] | 92 | Proxy(); |
rspangler@google.com | 570c65b | 2009-10-09 20:56:14 +0000 | [diff] [blame] | 93 | |
Yusuke Sato | 71da5ce | 2009-12-15 10:29:43 +0900 | [diff] [blame] | 94 | // Set |connect_to_name_owner| true if you'd like to use |
| 95 | // dbus_g_proxy_new_for_name_owner() rather than dbus_g_proxy_new_for_name(). |
| 96 | Proxy(const BusConnection& connection, |
| 97 | const char* name, |
| 98 | const char* path, |
| 99 | const char* interface, |
Alex Vakulenko | 847b871 | 2014-08-29 10:43:06 -0700 | [diff] [blame] | 100 | bool connect_to_name_owner); |
Yusuke Sato | 71da5ce | 2009-12-15 10:29:43 +0900 | [diff] [blame] | 101 | |
| 102 | // Equivalent to Proxy(connection, name, path, interface, false). |
rspangler@google.com | 570c65b | 2009-10-09 20:56:14 +0000 | [diff] [blame] | 103 | Proxy(const BusConnection& connection, |
| 104 | const char* name, |
| 105 | const char* path, |
Alex Vakulenko | 847b871 | 2014-08-29 10:43:06 -0700 | [diff] [blame] | 106 | const char* interface); |
rspangler@google.com | 570c65b | 2009-10-09 20:56:14 +0000 | [diff] [blame] | 107 | |
Mitsuru Oshima | 93b3783 | 2010-05-18 14:17:57 -0700 | [diff] [blame] | 108 | // Creates a peer proxy using dbus_g_proxy_new_for_peer. |
| 109 | Proxy(const BusConnection& connection, |
| 110 | const char* path, |
Alex Vakulenko | 847b871 | 2014-08-29 10:43:06 -0700 | [diff] [blame] | 111 | const char* interface); |
Mitsuru Oshima | 93b3783 | 2010-05-18 14:17:57 -0700 | [diff] [blame] | 112 | |
Alex Vakulenko | 847b871 | 2014-08-29 10:43:06 -0700 | [diff] [blame] | 113 | Proxy(const Proxy& x); |
rspangler@google.com | 570c65b | 2009-10-09 20:56:14 +0000 | [diff] [blame] | 114 | |
Alex Vakulenko | 847b871 | 2014-08-29 10:43:06 -0700 | [diff] [blame] | 115 | ~Proxy(); |
rspangler@google.com | 570c65b | 2009-10-09 20:56:14 +0000 | [diff] [blame] | 116 | |
| 117 | Proxy& operator=(Proxy x) { |
| 118 | swap(*this, x); |
| 119 | return *this; |
| 120 | } |
| 121 | |
| 122 | const char* path() const { |
| 123 | DCHECK(object_) << "referencing an empty proxy"; |
| 124 | return ::dbus_g_proxy_get_path(object_); |
| 125 | } |
| 126 | |
| 127 | // gproxy() returns a reference to the underlying ::DBusGProxy*. As this |
| 128 | // library evolves, the gproxy() will be moved to be private. |
| 129 | |
| 130 | const value_type& gproxy() const { |
| 131 | DCHECK(object_) << "referencing an empty proxy"; |
| 132 | return object_; |
| 133 | } |
| 134 | |
Alex Vakulenko | 05d2904 | 2015-01-13 09:39:25 -0800 | [diff] [blame] | 135 | operator bool() const { return object_; } |
rspangler@google.com | 570c65b | 2009-10-09 20:56:14 +0000 | [diff] [blame] | 136 | |
| 137 | private: |
Alex Vakulenko | 9ed0cab | 2015-10-12 15:21:28 -0700 | [diff] [blame^] | 138 | BRILLO_PRIVATE static value_type GetGProxy(const BusConnection& connection, |
| 139 | const char* name, |
| 140 | const char* path, |
| 141 | const char* interface, |
| 142 | bool connect_to_name_owner); |
Yusuke Sato | 71da5ce | 2009-12-15 10:29:43 +0900 | [diff] [blame] | 143 | |
Alex Vakulenko | 9ed0cab | 2015-10-12 15:21:28 -0700 | [diff] [blame^] | 144 | BRILLO_PRIVATE static value_type GetGPeerProxy( |
Alex Vakulenko | 847b871 | 2014-08-29 10:43:06 -0700 | [diff] [blame] | 145 | const BusConnection& connection, |
| 146 | const char* path, |
| 147 | const char* interface); |
Mitsuru Oshima | 93b3783 | 2010-05-18 14:17:57 -0700 | [diff] [blame] | 148 | |
Alex Vakulenko | 9ed0cab | 2015-10-12 15:21:28 -0700 | [diff] [blame^] | 149 | BRILLO_PRIVATE operator int() const; // for safe bool cast |
rspangler@google.com | 570c65b | 2009-10-09 20:56:14 +0000 | [diff] [blame] | 150 | friend void swap(Proxy& x, Proxy& y); |
| 151 | |
| 152 | value_type object_; |
| 153 | }; |
| 154 | |
| 155 | inline void swap(Proxy& x, Proxy& y) { |
| 156 | std::swap(x.object_, y.object_); |
| 157 | } |
| 158 | |
Chris Masone | c8150f1 | 2010-01-12 12:23:22 -0800 | [diff] [blame] | 159 | // \brief RegisterExclusiveService configures a GObject to run as a service on |
| 160 | // a supplied ::BusConnection. |
| 161 | // |
| 162 | // RegisterExclusiveService encapsulates the process of configuring the |
| 163 | // supplied \param object at \param service_path on the \param connection. |
| 164 | // Exclusivity is ensured by replacing any existing services at that named |
| 165 | // location and confirming that the connection is the primary owner. |
| 166 | // |
| 167 | // Type information for the \param object must be installed with |
| 168 | // dbus_g_object_type_install_info prior to use. |
| 169 | |
Alex Vakulenko | 9ed0cab | 2015-10-12 15:21:28 -0700 | [diff] [blame^] | 170 | BRILLO_EXPORT bool RegisterExclusiveService(const BusConnection& connection, |
| 171 | const char* interface_name, |
| 172 | const char* service_name, |
| 173 | const char* service_path, |
| 174 | GObject* object); |
Chris Masone | c8150f1 | 2010-01-12 12:23:22 -0800 | [diff] [blame] | 175 | |
Alex Vakulenko | 05d2904 | 2015-01-13 09:39:25 -0800 | [diff] [blame] | 176 | template<typename F> // F is a function signature |
rspangler@google.com | 570c65b | 2009-10-09 20:56:14 +0000 | [diff] [blame] | 177 | class MonitorConnection; |
| 178 | |
Alex Vakulenko | 05d2904 | 2015-01-13 09:39:25 -0800 | [diff] [blame] | 179 | template<typename A1> |
Alex Vakulenko | ef47ede | 2014-07-31 11:44:27 -0700 | [diff] [blame] | 180 | class MonitorConnection<void(A1)> { |
rspangler@google.com | 570c65b | 2009-10-09 20:56:14 +0000 | [diff] [blame] | 181 | public: |
Alex Vakulenko | 05d2904 | 2015-01-13 09:39:25 -0800 | [diff] [blame] | 182 | MonitorConnection(const Proxy& proxy, |
| 183 | const char* name, |
| 184 | void (*monitor)(void*, A1), |
| 185 | void* object) |
| 186 | : proxy_(proxy), name_(name), monitor_(monitor), object_(object) {} |
rspangler@google.com | 570c65b | 2009-10-09 20:56:14 +0000 | [diff] [blame] | 187 | |
| 188 | static void Run(::DBusGProxy*, A1 x, MonitorConnection* self) { |
| 189 | self->monitor_(self->object_, x); |
| 190 | } |
Alex Vakulenko | 05d2904 | 2015-01-13 09:39:25 -0800 | [diff] [blame] | 191 | const Proxy& proxy() const { return proxy_; } |
| 192 | const std::string& name() const { return name_; } |
rspangler@google.com | 570c65b | 2009-10-09 20:56:14 +0000 | [diff] [blame] | 193 | |
| 194 | private: |
| 195 | Proxy proxy_; |
| 196 | std::string name_; |
| 197 | void (*monitor_)(void*, A1); |
| 198 | void* object_; |
| 199 | }; |
| 200 | |
Alex Vakulenko | 05d2904 | 2015-01-13 09:39:25 -0800 | [diff] [blame] | 201 | template<typename A1, typename A2> |
Alex Vakulenko | ef47ede | 2014-07-31 11:44:27 -0700 | [diff] [blame] | 202 | class MonitorConnection<void(A1, A2)> { |
rspangler@google.com | 570c65b | 2009-10-09 20:56:14 +0000 | [diff] [blame] | 203 | public: |
Alex Vakulenko | 05d2904 | 2015-01-13 09:39:25 -0800 | [diff] [blame] | 204 | MonitorConnection(const Proxy& proxy, |
| 205 | const char* name, |
| 206 | void (*monitor)(void*, A1, A2), |
| 207 | void* object) |
| 208 | : proxy_(proxy), name_(name), monitor_(monitor), object_(object) {} |
rspangler@google.com | 570c65b | 2009-10-09 20:56:14 +0000 | [diff] [blame] | 209 | |
| 210 | static void Run(::DBusGProxy*, A1 x, A2 y, MonitorConnection* self) { |
| 211 | self->monitor_(self->object_, x, y); |
| 212 | } |
Alex Vakulenko | 05d2904 | 2015-01-13 09:39:25 -0800 | [diff] [blame] | 213 | const Proxy& proxy() const { return proxy_; } |
| 214 | const std::string& name() const { return name_; } |
rspangler@google.com | 570c65b | 2009-10-09 20:56:14 +0000 | [diff] [blame] | 215 | |
| 216 | private: |
| 217 | Proxy proxy_; |
| 218 | std::string name_; |
| 219 | void (*monitor_)(void*, A1, A2); |
| 220 | void* object_; |
rspangler@google.com | 570c65b | 2009-10-09 20:56:14 +0000 | [diff] [blame] | 221 | }; |
| 222 | |
Alex Vakulenko | 05d2904 | 2015-01-13 09:39:25 -0800 | [diff] [blame] | 223 | template<typename A1, typename A2, typename A3> |
Alex Vakulenko | ef47ede | 2014-07-31 11:44:27 -0700 | [diff] [blame] | 224 | class MonitorConnection<void(A1, A2, A3)> { |
Toni Barzic | fa02711 | 2010-08-16 19:21:34 -0700 | [diff] [blame] | 225 | public: |
Alex Vakulenko | 05d2904 | 2015-01-13 09:39:25 -0800 | [diff] [blame] | 226 | MonitorConnection(const Proxy& proxy, |
| 227 | const char* name, |
| 228 | void (*monitor)(void*, A1, A2, A3), |
| 229 | void* object) |
| 230 | : proxy_(proxy), name_(name), monitor_(monitor), object_(object) {} |
Toni Barzic | fa02711 | 2010-08-16 19:21:34 -0700 | [diff] [blame] | 231 | |
| 232 | static void Run(::DBusGProxy*, A1 x, A2 y, A3 z, MonitorConnection* self) { |
| 233 | self->monitor_(self->object_, x, y, z); |
| 234 | } |
Alex Vakulenko | 05d2904 | 2015-01-13 09:39:25 -0800 | [diff] [blame] | 235 | const Proxy& proxy() const { return proxy_; } |
| 236 | const std::string& name() const { return name_; } |
Toni Barzic | fa02711 | 2010-08-16 19:21:34 -0700 | [diff] [blame] | 237 | |
| 238 | private: |
| 239 | Proxy proxy_; |
| 240 | std::string name_; |
| 241 | void (*monitor_)(void*, A1, A2, A3); |
| 242 | void* object_; |
tbarzic | 6dd315a | 2011-07-20 16:53:10 -0700 | [diff] [blame] | 243 | }; |
Toni Barzic | fa02711 | 2010-08-16 19:21:34 -0700 | [diff] [blame] | 244 | |
Alex Vakulenko | 05d2904 | 2015-01-13 09:39:25 -0800 | [diff] [blame] | 245 | template<typename A1, typename A2, typename A3, typename A4> |
Alex Vakulenko | ef47ede | 2014-07-31 11:44:27 -0700 | [diff] [blame] | 246 | class MonitorConnection<void(A1, A2, A3, A4)> { |
tbarzic | 6dd315a | 2011-07-20 16:53:10 -0700 | [diff] [blame] | 247 | public: |
Alex Vakulenko | 05d2904 | 2015-01-13 09:39:25 -0800 | [diff] [blame] | 248 | MonitorConnection(const Proxy& proxy, |
| 249 | const char* name, |
| 250 | void (*monitor)(void*, A1, A2, A3, A4), |
| 251 | void* object) |
| 252 | : proxy_(proxy), name_(name), monitor_(monitor), object_(object) {} |
tbarzic | 6dd315a | 2011-07-20 16:53:10 -0700 | [diff] [blame] | 253 | |
Alex Vakulenko | 05d2904 | 2015-01-13 09:39:25 -0800 | [diff] [blame] | 254 | static void Run(::DBusGProxy*, |
| 255 | A1 x, |
| 256 | A2 y, |
| 257 | A3 z, |
| 258 | A4 w, |
tbarzic | 6dd315a | 2011-07-20 16:53:10 -0700 | [diff] [blame] | 259 | MonitorConnection* self) { |
| 260 | self->monitor_(self->object_, x, y, z, w); |
| 261 | } |
Alex Vakulenko | 05d2904 | 2015-01-13 09:39:25 -0800 | [diff] [blame] | 262 | const Proxy& proxy() const { return proxy_; } |
| 263 | const std::string& name() const { return name_; } |
tbarzic | 6dd315a | 2011-07-20 16:53:10 -0700 | [diff] [blame] | 264 | |
| 265 | private: |
| 266 | Proxy proxy_; |
| 267 | std::string name_; |
| 268 | void (*monitor_)(void*, A1, A2, A3, A4); |
| 269 | void* object_; |
Toni Barzic | fa02711 | 2010-08-16 19:21:34 -0700 | [diff] [blame] | 270 | }; |
| 271 | |
Alex Vakulenko | 05d2904 | 2015-01-13 09:39:25 -0800 | [diff] [blame] | 272 | template<typename A1> |
| 273 | MonitorConnection<void(A1)>* Monitor(const Proxy& proxy, |
| 274 | const char* name, |
Alex Vakulenko | ef47ede | 2014-07-31 11:44:27 -0700 | [diff] [blame] | 275 | void (*monitor)(void*, A1), |
| 276 | void* object) { |
Alex Vakulenko | 05d2904 | 2015-01-13 09:39:25 -0800 | [diff] [blame] | 277 | typedef MonitorConnection<void(A1)> ConnectionType; |
rspangler@google.com | 570c65b | 2009-10-09 20:56:14 +0000 | [diff] [blame] | 278 | |
| 279 | ConnectionType* result = new ConnectionType(proxy, name, monitor, object); |
| 280 | |
Alex Vakulenko | 05d2904 | 2015-01-13 09:39:25 -0800 | [diff] [blame] | 281 | ::dbus_g_proxy_add_signal( |
| 282 | proxy.gproxy(), name, glib::type_to_gtypeid<A1>(), G_TYPE_INVALID); |
| 283 | ::dbus_g_proxy_connect_signal( |
| 284 | proxy.gproxy(), name, G_CALLBACK(&ConnectionType::Run), result, nullptr); |
rspangler@google.com | 570c65b | 2009-10-09 20:56:14 +0000 | [diff] [blame] | 285 | return result; |
| 286 | } |
| 287 | |
Alex Vakulenko | 05d2904 | 2015-01-13 09:39:25 -0800 | [diff] [blame] | 288 | template<typename A1, typename A2> |
| 289 | MonitorConnection<void(A1, A2)>* Monitor(const Proxy& proxy, |
| 290 | const char* name, |
Alex Vakulenko | ef47ede | 2014-07-31 11:44:27 -0700 | [diff] [blame] | 291 | void (*monitor)(void*, A1, A2), |
| 292 | void* object) { |
Alex Vakulenko | 05d2904 | 2015-01-13 09:39:25 -0800 | [diff] [blame] | 293 | typedef MonitorConnection<void(A1, A2)> ConnectionType; |
rspangler@google.com | 570c65b | 2009-10-09 20:56:14 +0000 | [diff] [blame] | 294 | |
| 295 | ConnectionType* result = new ConnectionType(proxy, name, monitor, object); |
| 296 | |
Alex Vakulenko | 05d2904 | 2015-01-13 09:39:25 -0800 | [diff] [blame] | 297 | ::dbus_g_proxy_add_signal(proxy.gproxy(), |
| 298 | name, |
rspangler@google.com | 570c65b | 2009-10-09 20:56:14 +0000 | [diff] [blame] | 299 | glib::type_to_gtypeid<A1>(), |
| 300 | glib::type_to_gtypeid<A2>(), |
| 301 | G_TYPE_INVALID); |
Alex Vakulenko | 05d2904 | 2015-01-13 09:39:25 -0800 | [diff] [blame] | 302 | ::dbus_g_proxy_connect_signal( |
| 303 | proxy.gproxy(), name, G_CALLBACK(&ConnectionType::Run), result, nullptr); |
rspangler@google.com | 570c65b | 2009-10-09 20:56:14 +0000 | [diff] [blame] | 304 | return result; |
| 305 | } |
| 306 | |
Alex Vakulenko | 05d2904 | 2015-01-13 09:39:25 -0800 | [diff] [blame] | 307 | template<typename A1, typename A2, typename A3> |
Alex Vakulenko | ef47ede | 2014-07-31 11:44:27 -0700 | [diff] [blame] | 308 | MonitorConnection<void(A1, A2, A3)>* Monitor(const Proxy& proxy, |
Alex Vakulenko | 05d2904 | 2015-01-13 09:39:25 -0800 | [diff] [blame] | 309 | const char* name, |
| 310 | void (*monitor)(void*, A1, A2, A3), |
| 311 | void* object) { |
| 312 | typedef MonitorConnection<void(A1, A2, A3)> ConnectionType; |
Toni Barzic | fa02711 | 2010-08-16 19:21:34 -0700 | [diff] [blame] | 313 | |
| 314 | ConnectionType* result = new ConnectionType(proxy, name, monitor, object); |
| 315 | |
Alex Vakulenko | 05d2904 | 2015-01-13 09:39:25 -0800 | [diff] [blame] | 316 | ::dbus_g_proxy_add_signal(proxy.gproxy(), |
| 317 | name, |
Toni Barzic | fa02711 | 2010-08-16 19:21:34 -0700 | [diff] [blame] | 318 | glib::type_to_gtypeid<A1>(), |
| 319 | glib::type_to_gtypeid<A2>(), |
| 320 | glib::type_to_gtypeid<A3>(), |
| 321 | G_TYPE_INVALID); |
Alex Vakulenko | 05d2904 | 2015-01-13 09:39:25 -0800 | [diff] [blame] | 322 | ::dbus_g_proxy_connect_signal( |
| 323 | proxy.gproxy(), name, G_CALLBACK(&ConnectionType::Run), result, nullptr); |
Toni Barzic | fa02711 | 2010-08-16 19:21:34 -0700 | [diff] [blame] | 324 | return result; |
| 325 | } |
| 326 | |
Alex Vakulenko | 05d2904 | 2015-01-13 09:39:25 -0800 | [diff] [blame] | 327 | template<typename A1, typename A2, typename A3, typename A4> |
| 328 | MonitorConnection<void(A1, A2, A3, A4)>* Monitor( |
| 329 | const Proxy& proxy, |
tbarzic | 6dd315a | 2011-07-20 16:53:10 -0700 | [diff] [blame] | 330 | const char* name, |
| 331 | void (*monitor)(void*, A1, A2, A3, A4), |
| 332 | void* object) { |
Alex Vakulenko | 05d2904 | 2015-01-13 09:39:25 -0800 | [diff] [blame] | 333 | typedef MonitorConnection<void(A1, A2, A3, A4)> ConnectionType; |
tbarzic | 6dd315a | 2011-07-20 16:53:10 -0700 | [diff] [blame] | 334 | |
| 335 | ConnectionType* result = new ConnectionType(proxy, name, monitor, object); |
| 336 | |
Alex Vakulenko | 05d2904 | 2015-01-13 09:39:25 -0800 | [diff] [blame] | 337 | ::dbus_g_proxy_add_signal(proxy.gproxy(), |
| 338 | name, |
tbarzic | 6dd315a | 2011-07-20 16:53:10 -0700 | [diff] [blame] | 339 | glib::type_to_gtypeid<A1>(), |
| 340 | glib::type_to_gtypeid<A2>(), |
| 341 | glib::type_to_gtypeid<A3>(), |
| 342 | glib::type_to_gtypeid<A4>(), |
| 343 | G_TYPE_INVALID); |
Alex Vakulenko | 05d2904 | 2015-01-13 09:39:25 -0800 | [diff] [blame] | 344 | ::dbus_g_proxy_connect_signal( |
| 345 | proxy.gproxy(), name, G_CALLBACK(&ConnectionType::Run), result, nullptr); |
tbarzic | 6dd315a | 2011-07-20 16:53:10 -0700 | [diff] [blame] | 346 | return result; |
| 347 | } |
| 348 | |
Alex Vakulenko | 05d2904 | 2015-01-13 09:39:25 -0800 | [diff] [blame] | 349 | template<typename F> |
rspangler@google.com | 570c65b | 2009-10-09 20:56:14 +0000 | [diff] [blame] | 350 | void Disconnect(MonitorConnection<F>* connection) { |
| 351 | typedef MonitorConnection<F> ConnectionType; |
| 352 | |
| 353 | ::dbus_g_proxy_disconnect_signal(connection->proxy().gproxy(), |
| 354 | connection->name().c_str(), |
| 355 | G_CALLBACK(&ConnectionType::Run), |
| 356 | connection); |
| 357 | delete connection; |
| 358 | } |
| 359 | |
| 360 | // \brief call_PtrArray() invokes a method on a proxy returning a |
| 361 | // glib::PtrArray. |
| 362 | // |
| 363 | // CallPtrArray is the first instance of what is likely to be a general |
| 364 | // way to make method calls to a proxy. It will likely be replaced with |
| 365 | // something like Call(proxy, method, arg1, arg2, ..., ResultType*) in the |
| 366 | // future. However, I don't yet have enough cases to generalize from. |
| 367 | |
Alex Vakulenko | 9ed0cab | 2015-10-12 15:21:28 -0700 | [diff] [blame^] | 368 | BRILLO_EXPORT bool CallPtrArray(const Proxy& proxy, |
Alex Vakulenko | 847b871 | 2014-08-29 10:43:06 -0700 | [diff] [blame] | 369 | const char* method, |
| 370 | glib::ScopedPtrArray<const char*>* result); |
rspangler@google.com | 570c65b | 2009-10-09 20:56:14 +0000 | [diff] [blame] | 371 | |
| 372 | // \brief RetrieveProperty() retrieves a property of an object associated with a |
| 373 | // proxy. |
| 374 | // |
| 375 | // Given a proxy to an object supporting the org.freedesktop.DBus.Properties |
| 376 | // interface, the RetrieveProperty() call will retrieve a property of the |
| 377 | // specified interface on the object storing it in \param result and returning |
| 378 | // \true. If the dbus call fails or the object returned is not of type \param T, |
| 379 | // then \false is returned and \param result is unchanged. |
| 380 | // |
| 381 | // \example |
| 382 | // Proxy proxy(GetSystemBusConnection(), |
| 383 | // "org.freedesktop.DeviceKit.Power", // A named entity on the bus |
| 384 | // battery_name, // Path to a battery on the bus |
| 385 | // "org.freedesktop.DBus.Properties") // Properties interface |
| 386 | // |
| 387 | // double x; |
| 388 | // if (RetrieveProperty(proxy, |
| 389 | // "org.freedesktop.DeviceKit.Power.Device", |
| 390 | // "percentage") |
| 391 | // std::cout << "Battery charge is " << x << "% of capacity."; |
| 392 | // \end_example |
| 393 | |
Alex Vakulenko | 05d2904 | 2015-01-13 09:39:25 -0800 | [diff] [blame] | 394 | template<typename T> |
Alex Vakulenko | 847b871 | 2014-08-29 10:43:06 -0700 | [diff] [blame] | 395 | inline bool RetrieveProperty(const Proxy& proxy, |
| 396 | const char* interface, |
| 397 | const char* property, |
| 398 | T* result) { |
rspangler@google.com | 570c65b | 2009-10-09 20:56:14 +0000 | [diff] [blame] | 399 | glib::ScopedError error; |
| 400 | glib::Value value; |
| 401 | |
| 402 | if (!::dbus_g_proxy_call(proxy.gproxy(), "Get", &Resetter(&error).lvalue(), |
| 403 | G_TYPE_STRING, interface, |
| 404 | G_TYPE_STRING, property, |
| 405 | G_TYPE_INVALID, |
| 406 | G_TYPE_VALUE, &value, |
Bertrand SIMONNET | b54b6dc | 2014-07-02 12:13:56 -0700 | [diff] [blame] | 407 | G_TYPE_INVALID)) { |
Yusuke Sato | 71da5ce | 2009-12-15 10:29:43 +0900 | [diff] [blame] | 408 | LOG(ERROR) << "Getting property failed: " |
| 409 | << (error->message ? error->message : "Unknown Error."); |
rspangler@google.com | 570c65b | 2009-10-09 20:56:14 +0000 | [diff] [blame] | 410 | return false; |
dhg@google.com | 7ec90e9 | 2009-10-27 16:44:35 +0000 | [diff] [blame] | 411 | } |
| 412 | return glib::Retrieve(value, result); |
rspangler@google.com | 570c65b | 2009-10-09 20:56:14 +0000 | [diff] [blame] | 413 | } |
| 414 | |
| 415 | // \brief RetrieveProperties returns a HashTable of all properties for the |
| 416 | // specified interface. |
| 417 | |
Alex Vakulenko | 9ed0cab | 2015-10-12 15:21:28 -0700 | [diff] [blame^] | 418 | BRILLO_EXPORT bool RetrieveProperties(const Proxy& proxy, |
| 419 | const char* interface, |
| 420 | glib::ScopedHashTable* result); |
rspangler@google.com | 570c65b | 2009-10-09 20:56:14 +0000 | [diff] [blame] | 421 | |
| 422 | // \brief Returns a connection to the system bus. |
| 423 | |
Alex Vakulenko | 9ed0cab | 2015-10-12 15:21:28 -0700 | [diff] [blame^] | 424 | BRILLO_EXPORT BusConnection GetSystemBusConnection(); |
rspangler@google.com | 570c65b | 2009-10-09 20:56:14 +0000 | [diff] [blame] | 425 | |
Yusuke Sato | 71da5ce | 2009-12-15 10:29:43 +0900 | [diff] [blame] | 426 | // \brief Returns a private connection to a bus at |address|. |
| 427 | |
Alex Vakulenko | 9ed0cab | 2015-10-12 15:21:28 -0700 | [diff] [blame^] | 428 | BRILLO_EXPORT BusConnection GetPrivateBusConnection(const char* address); |
Yusuke Sato | 71da5ce | 2009-12-15 10:29:43 +0900 | [diff] [blame] | 429 | |
Simon Que | efb8fe1 | 2011-09-21 16:45:31 -0700 | [diff] [blame] | 430 | // \brief Calls a method |method_name| with no arguments per the given |path| |
| 431 | // and |interface_name|. Ignores return value. |
| 432 | |
Alex Vakulenko | 9ed0cab | 2015-10-12 15:21:28 -0700 | [diff] [blame^] | 433 | BRILLO_EXPORT void CallMethodWithNoArguments(const char* service_name, |
| 434 | const char* path, |
| 435 | const char* interface_name, |
| 436 | const char* method_name); |
Simon Que | efb8fe1 | 2011-09-21 16:45:31 -0700 | [diff] [blame] | 437 | |
Denis Glotov | 8a93c90 | 2011-02-11 22:32:49 +0300 | [diff] [blame] | 438 | // \brief Low-level signal monitor base class. |
| 439 | // |
| 440 | // Used when there is no definite named signal sender (that Proxy |
| 441 | // could be used for). |
| 442 | |
Alex Vakulenko | 9ed0cab | 2015-10-12 15:21:28 -0700 | [diff] [blame^] | 443 | class BRILLO_EXPORT SignalWatcher { |
Denis Glotov | 8a93c90 | 2011-02-11 22:32:49 +0300 | [diff] [blame] | 444 | public: |
| 445 | SignalWatcher() {} |
| 446 | ~SignalWatcher(); |
| 447 | void StartMonitoring(const std::string& interface, const std::string& signal); |
Denis Glotov | 8a93c90 | 2011-02-11 22:32:49 +0300 | [diff] [blame] | 448 | |
Bertrand SIMONNET | b54b6dc | 2014-07-02 12:13:56 -0700 | [diff] [blame] | 449 | private: |
Denis Glotov | 8a93c90 | 2011-02-11 22:32:49 +0300 | [diff] [blame] | 450 | // Callback invoked on the given signal arrival. |
| 451 | virtual void OnSignal(DBusMessage* message) = 0; |
| 452 | |
| 453 | // Returns a string matching the D-Bus messages that we want to listen for. |
Alex Vakulenko | 9ed0cab | 2015-10-12 15:21:28 -0700 | [diff] [blame^] | 454 | BRILLO_PRIVATE std::string GetDBusMatchString() const; |
Denis Glotov | 8a93c90 | 2011-02-11 22:32:49 +0300 | [diff] [blame] | 455 | |
| 456 | // A D-Bus message filter to receive signals. |
Alex Vakulenko | 9ed0cab | 2015-10-12 15:21:28 -0700 | [diff] [blame^] | 457 | BRILLO_PRIVATE static DBusHandlerResult FilterDBusMessage( |
Alex Vakulenko | 847b871 | 2014-08-29 10:43:06 -0700 | [diff] [blame] | 458 | DBusConnection* dbus_conn, |
| 459 | DBusMessage* message, |
| 460 | void* data); |
Denis Glotov | 8a93c90 | 2011-02-11 22:32:49 +0300 | [diff] [blame] | 461 | std::string interface_; |
| 462 | std::string signal_; |
| 463 | }; |
| 464 | |
rspangler@google.com | 570c65b | 2009-10-09 20:56:14 +0000 | [diff] [blame] | 465 | } // namespace dbus |
Alex Vakulenko | 9ed0cab | 2015-10-12 15:21:28 -0700 | [diff] [blame^] | 466 | } // namespace brillo |
rspangler@google.com | 570c65b | 2009-10-09 20:56:14 +0000 | [diff] [blame] | 467 | |
Alex Vakulenko | 9ed0cab | 2015-10-12 15:21:28 -0700 | [diff] [blame^] | 468 | #endif // LIBCHROMEOS_BRILLO_GLIB_DBUS_H_ |