1 // Copyright 2013 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 5 #ifndef REMOTING_HOST_STATUS_SENDER_H_ 6 #define REMOTING_HOST_STATUS_SENDER_H_ 7 8 #include <string> 9 10 #include "base/compiler_specific.h" 11 #include "base/memory/ref_counted.h" 12 #include "base/memory/scoped_ptr.h" 13 #include "remoting/base/rsa_key_pair.h" 14 #include "remoting/host/host_exit_codes.h" 15 #include "remoting/jingle_glue/signal_strategy.h" 16 17 namespace base { 18 class MessageLoopProxy; 19 } // namespace base 20 21 namespace buzz { 22 class XmlElement; 23 } // namespace buzz 24 25 namespace remoting { 26 27 class RsaKeyPair; 28 class IqSender; 29 30 // HostStatusSender sends the host status to the Chromoting Bot. 31 // Each host status stanza looks as follows: 32 // 33 // <cli:iq type="set" to="user (at) gmail.com/chromoting123123" 34 // id="123" xmlns:cli="jabber:client"> 35 // <rem:host-status rem:hostid="0" 36 // rem:status="OFFLINE" rem:exit-code="INVALID_HOST_CONFIGURATION" 37 // xmlns:rem="google:remoting"> 38 // <rem:signature rem:time="1372878097">.signature.</rem:signature> 39 // <rem:host-version>30.0.1554.0</rem:host-version> 40 // <rem:log><rem:entry cpu="x86_64" event-name="host-status" 41 // host-version="30.0.1560.0" os-name="Linux" role="host"/> 42 // </rem:log> 43 // </rem:host-status> 44 // </cli:iq> 45 // 46 // The signature is a base-64 encoded SHA-1 hash, signed with the host's 47 // private RSA key. The message being signed contains the full Jid (e.g. 48 // "user (at) gmail.com/chromoting123123"), the timestamp, the host status, 49 // and the exit code. 50 class HostStatusSender : SignalStrategy::Listener { 51 public: 52 53 enum HostStatus { 54 OFFLINE = 0, 55 ONLINE = 1 56 }; 57 58 HostStatusSender(const std::string& host_id, 59 SignalStrategy* signal_strategy, 60 scoped_refptr<RsaKeyPair> key_pair, 61 const std::string& directory_bot_jid); 62 virtual ~HostStatusSender(); 63 64 // SignalStrategy::Listener interface. 65 virtual void OnSignalStrategyStateChange( 66 SignalStrategy::State state) OVERRIDE; 67 virtual bool OnSignalStrategyIncomingStanza( 68 const buzz::XmlElement* stanza) OVERRIDE; 69 70 // APIs for sending host status XMPP messages to the chromoting bot. 71 // status: the reason (exit code) why the host is offline. 72 void SendOnlineStatus(); 73 void SendOfflineStatus(HostExitCodes exit_code); 74 75 inline static const char* HostStatusToString(HostStatus host_status) { 76 return host_status_strings_[host_status]; 77 } 78 79 private: 80 // Helper method for sending either an online or an offline status message. 81 void SendHostStatus(HostStatus status, HostExitCodes exit_code); 82 83 // Helper method to compose host status stanzas. 84 scoped_ptr<buzz::XmlElement> CreateHostStatusMessage( 85 HostStatus status, HostExitCodes exit_code); 86 87 // Helper method to create the signature blob used in the host status stanza. 88 scoped_ptr<buzz::XmlElement> CreateSignature( 89 HostStatus status, HostExitCodes exit_code); 90 91 std::string host_id_; 92 SignalStrategy* signal_strategy_; 93 scoped_refptr<RsaKeyPair> key_pair_; 94 std::string directory_bot_jid_; 95 scoped_ptr<IqSender> iq_sender_; 96 97 // The string representation of the HostStatus values. 98 static const char* const host_status_strings_[2]; 99 100 DISALLOW_COPY_AND_ASSIGN(HostStatusSender); 101 }; 102 103 } // namespace remoting 104 105 #endif // REMOTING_HOST_STATUS_SENDER_H_ 106
