1 files changed, 296 insertions, 0 deletions
diff --git a/xbmc/platform/linux/DBusUtil.cpp b/xbmc/platform/linux/DBusUtil.cpp
new file mode 100644
index 0000000..2efb75c
--- /dev/null
+++ b/xbmc/platform/linux/DBusUtil.cpp
@@ -0,0 +1,296 @@
+/*
+ *  Copyright (C) 2005-2018 Team Kodi
+ *  This file is part of Kodi - https://kodi.tv
+ *
+ *  SPDX-License-Identifier: GPL-2.0-or-later
+ *  See LICENSES/README.md for more information.
+ */
+#include "DBusUtil.h"
+
+#include "utils/log.h"
+
+CVariant CDBusUtil::GetVariant(const char *destination, const char *object, const char *interface, const char *property)
+{
+//dbus-send --system --print-reply --dest=destination object org.freedesktop.DBus.Properties.Get string:interface string:property
+  CDBusMessage message(destination, object, "org.freedesktop.DBus.Properties", "Get");
+  CVariant result;
+
+  message.AppendArgument(interface);
+  message.AppendArgument(property);
+  DBusMessage *reply = message.SendSystem();
+
+  if (reply)
+  {
+    DBusMessageIter iter;
+
+    if (dbus_message_iter_init(reply, &iter))
+    {
+      if (!dbus_message_has_signature(reply, "v"))
+        CLog::Log(LOGERROR, "DBus: wrong signature on Get - should be \"v\" but was {}",
+                  dbus_message_iter_get_signature(&iter));
+      else
+        result = ParseVariant(&iter);
+    }
+  }
+
+  return result;
+}
+
+CVariant CDBusUtil::GetAll(const char *destination, const char *object, const char *interface)
+{
+  CDBusMessage message(destination, object, "org.freedesktop.DBus.Properties", "GetAll");
+  CVariant properties;
+  message.AppendArgument(interface);
+  DBusMessage *reply = message.SendSystem();
+  if (reply)
+  {
+    DBusMessageIter iter;
+    if (dbus_message_iter_init(reply, &iter))
+    {
+      if (!dbus_message_has_signature(reply, "a{sv}"))
+        CLog::Log(LOGERROR, "DBus: wrong signature on GetAll - should be \"a{sv}\" but was {}",
+                  dbus_message_iter_get_signature(&iter));
+      else
+      {
+        do
+        {
+          DBusMessageIter sub;
+          dbus_message_iter_recurse(&iter, &sub);
+          do
+          {
+            DBusMessageIter dict;
+            dbus_message_iter_recurse(&sub, &dict);
+            do
+            {
+              const char * key = NULL;
+
+              dbus_message_iter_get_basic(&dict, &key);
+              if (!dbus_message_iter_next(&dict))
+                break;
+
+              CVariant value = ParseVariant(&dict);
+
+              if (!value.isNull())
+                properties[key] = value;
+
+            } while (dbus_message_iter_next(&dict));
+
+          } while (dbus_message_iter_next(&sub));
+
+        } while (dbus_message_iter_next(&iter));
+      }
+    }
+  }
+
+  return properties;
+}
+
+CVariant CDBusUtil::ParseVariant(DBusMessageIter *itr)
+{
+  DBusMessageIter variant;
+  dbus_message_iter_recurse(itr, &variant);
+
+  return ParseType(&variant);
+}
+
+CVariant CDBusUtil::ParseType(DBusMessageIter *itr)
+{
+  CVariant value;
+  const char *    string  = NULL;
+  dbus_int32_t    int32   = 0;
+  dbus_uint32_t   uint32  = 0;
+  dbus_int64_t    int64   = 0;
+  dbus_uint64_t   uint64  = 0;
+  dbus_bool_t     boolean = false;
+  double          doublev = 0;
+
+  int type = dbus_message_iter_get_arg_type(itr);
+  switch (type)
+  {
+  case DBUS_TYPE_OBJECT_PATH:
+  case DBUS_TYPE_STRING:
+    dbus_message_iter_get_basic(itr, &string);
+    value = string;
+    break;
+  case DBUS_TYPE_UINT32:
+    dbus_message_iter_get_basic(itr, &uint32);
+    value = (uint64_t)uint32;
+    break;
+  case DBUS_TYPE_BYTE:
+  case DBUS_TYPE_INT32:
+    dbus_message_iter_get_basic(itr, &int32);
+    value = (int64_t)int32;
+    break;
+  case DBUS_TYPE_UINT64:
+    dbus_message_iter_get_basic(itr, &uint64);
+    value = (uint64_t)uint64;
+    break;
+  case DBUS_TYPE_INT64:
+    dbus_message_iter_get_basic(itr, &int64);
+    value = (int64_t)int64;
+    break;
+  case DBUS_TYPE_BOOLEAN:
+    dbus_message_iter_get_basic(itr, &boolean);
+    value = (bool)boolean;
+    break;
+  case DBUS_TYPE_DOUBLE:
+    dbus_message_iter_get_basic(itr, &doublev);
+    value = doublev;
+    break;
+  case DBUS_TYPE_ARRAY:
+    DBusMessageIter array;
+    dbus_message_iter_recurse(itr, &array);
+
+    value = CVariant::VariantTypeArray;
+
+    do
+    {
+      CVariant item = ParseType(&array);
+      if (!item.isNull())
+        value.push_back(item);
+    } while (dbus_message_iter_next(&array));
+    break;
+  }
+
+  return value;
+}
+
+bool CDBusUtil::TryMethodCall(DBusBusType bus, const char* destination, const char* object, const char* interface, const char* method)
+{
+  CDBusMessage message(destination, object, interface, method);
+  CDBusError error;
+  message.Send(bus, error);
+  if (error)
+  {
+    error.Log(LOGDEBUG, std::string("DBus method call to ") + interface + "." + method + " at " + object + " of " + destination + " failed");
+  }
+  return !error;
+}
+
+bool CDBusUtil::TryMethodCall(DBusBusType bus, std::string const& destination, std::string const& object, std::string const& interface, std::string const& method)
+{
+  return TryMethodCall(bus, destination.c_str(), object.c_str(), interface.c_str(), method.c_str());
+}
+
+CDBusConnection::CDBusConnection() = default;
+
+bool CDBusConnection::Connect(DBusBusType bus, bool openPrivate)
+{
+  CDBusError error;
+  Connect(bus, error, openPrivate);
+  if (error)
+  {
+    error.Log(LOGWARNING, "DBus connection failed");
+    return false;
+  }
+
+  return true;
+}
+
+bool CDBusConnection::Connect(DBusBusType bus, CDBusError& error, bool openPrivate)
+{
+  if (m_connection)
+  {
+    throw std::logic_error("Cannot reopen connected DBus connection");
+  }
+
+  m_connection.get_deleter().closeBeforeUnref = openPrivate;
+
+  if (openPrivate)
+  {
+    m_connection.reset(dbus_bus_get_private(bus, error));
+  }
+  else
+  {
+    m_connection.reset(dbus_bus_get(bus, error));
+  }
+
+  return !!m_connection;
+}
+
+CDBusConnection::operator DBusConnection*()
+{
+  return m_connection.get();
+}
+
+void CDBusConnection::DBusConnectionDeleter::operator()(DBusConnection* connection) const
+{
+  if (closeBeforeUnref)
+  {
+    dbus_connection_close(connection);
+  }
+  dbus_connection_unref(connection);
+}
+
+void CDBusConnection::Destroy()
+{
+  m_connection.reset();
+}
+
+
+CDBusError::CDBusError()
+{
+  dbus_error_init(&m_error);
+}
+
+CDBusError::~CDBusError()
+{
+  Reset();
+}
+
+void CDBusError::Reset()
+{
+ dbus_error_free(&m_error);
+}
+
+CDBusError::operator DBusError*()
+{
+  return &m_error;
+}
+
+bool CDBusError::IsSet() const
+{
+  return dbus_error_is_set(&m_error);
+}
+
+CDBusError::operator bool()
+{
+  return IsSet();
+}
+
+CDBusError::operator bool() const
+{
+  return IsSet();
+}
+
+std::string CDBusError::Name() const
+{
+  if (!IsSet())
+  {
+    throw std::logic_error("Cannot retrieve name of unset DBus error");
+  }
+  return m_error.name;
+}
+
+std::string CDBusError::Message() const
+{
+  if (!IsSet())
+  {
+    throw std::logic_error("Cannot retrieve message of unset DBus error");
+  }
+  return m_error.message;
+}
+
+void CDBusError::Log(std::string const& message) const
+{
+  Log(LOGERROR, message);
+}
+
+void CDBusError::Log(int level, const std::string& message) const
+{
+  if (!IsSet())
+  {
+    throw std::logic_error("Cannot log unset DBus error");
+  }
+  CLog::Log(level, "{}: {} - {}", message, m_error.name, m_error.message);
+}