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      1 // Copyright (c) 2012 The Chromium 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 #include "chromeos/dbus/sms_client.h"
      5 
      6 #include <map>
      7 #include <utility>
      8 
      9 #include "base/bind.h"
     10 #include "base/command_line.h"
     11 #include "base/memory/scoped_ptr.h"
     12 #include "base/memory/weak_ptr.h"
     13 #include "base/message_loop/message_loop.h"
     14 #include "base/stl_util.h"
     15 #include "base/strings/stringprintf.h"
     16 #include "base/values.h"
     17 #include "chromeos/chromeos_switches.h"
     18 #include "dbus/bus.h"
     19 #include "dbus/message.h"
     20 #include "dbus/object_proxy.h"
     21 #include "dbus/values_util.h"
     22 #include "third_party/cros_system_api/dbus/service_constants.h"
     23 
     24 namespace chromeos {
     25 
     26 namespace {
     27 
     28 // SMSClient is used to communicate with the
     29 // org.freedesktop.ModemManager1.SMS service.  All methods should be
     30 // called from the origin thread (UI thread) which initializes the
     31 // DBusThreadManager instance.
     32 class SMSClientImpl : public SMSClient {
     33  public:
     34   explicit SMSClientImpl(dbus::Bus* bus) : bus_(bus), weak_ptr_factory_(this) {}
     35   virtual ~SMSClientImpl() {}
     36 
     37   // Calls GetAll method.  |callback| is called after the method call succeeds.
     38   virtual void GetAll(const std::string& service_name,
     39                       const dbus::ObjectPath& object_path,
     40                       const GetAllCallback& callback) OVERRIDE {
     41     dbus::ObjectProxy *proxy = bus_->GetObjectProxy(service_name, object_path);
     42     dbus::MethodCall method_call(dbus::kDBusPropertiesInterface,
     43                                  dbus::kDBusPropertiesGetAll);
     44     dbus::MessageWriter writer(&method_call);
     45     writer.AppendString(modemmanager::kModemManager1SmsInterface);
     46     proxy->CallMethod(&method_call, dbus::ObjectProxy::TIMEOUT_USE_DEFAULT,
     47                        base::Bind(&SMSClientImpl::OnGetAll,
     48                                   weak_ptr_factory_.GetWeakPtr(),
     49                                   callback));
     50   }
     51 
     52  private:
     53   // Handles responses of GetAll method calls.
     54   void OnGetAll(const GetAllCallback& callback, dbus::Response* response) {
     55     if (!response) {
     56       // Must invoke the callback, even if there is no message.
     57       base::DictionaryValue empty_dictionary;
     58       callback.Run(empty_dictionary);
     59       return;
     60     }
     61     dbus::MessageReader reader(response);
     62     scoped_ptr<base::Value> value(dbus::PopDataAsValue(&reader));
     63     base::DictionaryValue* dictionary_value = NULL;
     64     if (!value.get() || !value->GetAsDictionary(&dictionary_value)) {
     65       LOG(WARNING) << "Invalid response: " << response->ToString();
     66       base::DictionaryValue empty_dictionary;
     67       callback.Run(empty_dictionary);
     68       return;
     69     }
     70     callback.Run(*dictionary_value);
     71   }
     72 
     73   dbus::Bus* bus_;
     74 
     75   // Note: This should remain the last member so it'll be destroyed and
     76   // invalidate its weak pointers before any other members are destroyed.
     77   base::WeakPtrFactory<SMSClientImpl> weak_ptr_factory_;
     78 
     79   DISALLOW_COPY_AND_ASSIGN(SMSClientImpl);
     80 };
     81 
     82 class SMSClientStubImpl : public SMSClient {
     83  public:
     84   SMSClientStubImpl() : weak_ptr_factory_(this) {}
     85   virtual ~SMSClientStubImpl() {}
     86 
     87   virtual void GetAll(const std::string& service_name,
     88                       const dbus::ObjectPath& object_path,
     89                       const GetAllCallback& callback) OVERRIDE {
     90     if (!CommandLine::ForCurrentProcess()->HasSwitch(
     91             chromeos::switches::kSmsTestMessages))
     92       return;
     93 
     94     // Ownership passed to callback
     95     base::DictionaryValue *sms = new base::DictionaryValue();
     96     sms->SetString("Number", "000-000-0000");
     97     sms->SetString("Text",
     98                    "SMSClientStubImpl: Test Message: " + object_path.value());
     99     sms->SetString("Timestamp", "Fri Jun  8 13:26:04 EDT 2012");
    100 
    101     // Run callback asynchronously.
    102     if (callback.is_null())
    103       return;
    104     base::MessageLoop::current()->PostTask(
    105         FROM_HERE,
    106         base::Bind(&SMSClientStubImpl::OnGetAll,
    107                    weak_ptr_factory_.GetWeakPtr(),
    108                    base::Owned(sms),
    109                    callback));
    110   }
    111 
    112  private:
    113   void OnGetAll(base::DictionaryValue *sms,
    114                 const GetAllCallback& callback) {
    115     callback.Run(*sms);
    116   }
    117 
    118   base::WeakPtrFactory<SMSClientStubImpl> weak_ptr_factory_;
    119 
    120   DISALLOW_COPY_AND_ASSIGN(SMSClientStubImpl);
    121 };
    122 
    123 }  // namespace
    124 
    125 ////////////////////////////////////////////////////////////////////////////////
    126 // SMSClient
    127 
    128 SMSClient::SMSClient() {}
    129 
    130 SMSClient::~SMSClient() {}
    131 
    132 
    133 // static
    134 SMSClient* SMSClient::Create(DBusClientImplementationType type,
    135                              dbus::Bus* bus) {
    136   if (type == REAL_DBUS_CLIENT_IMPLEMENTATION) {
    137     return new SMSClientImpl(bus);
    138   }
    139   DCHECK_EQ(STUB_DBUS_CLIENT_IMPLEMENTATION, type);
    140   return new SMSClientStubImpl();
    141 }
    142 
    143 }  // namespace chromeos
    144