git-svn-id: http://webrtc.googlecode.com/svn/trunk@6891 4adac7df-926f-26a2-2b94-8c16560cd09d
		
			
				
	
	
		
			753 lines
		
	
	
		
			24 KiB
		
	
	
	
		
			C++
		
	
	
	
	
	
			
		
		
	
	
			753 lines
		
	
	
		
			24 KiB
		
	
	
	
		
			C++
		
	
	
	
	
	
/*
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 * libjingle
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 * Copyright 2004--2005, Google Inc.
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 *
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 * Redistribution and use in source and binary forms, with or without
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 * modification, are permitted provided that the following conditions are met:
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 *
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 *  1. Redistributions of source code must retain the above copyright notice,
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 *     this list of conditions and the following disclaimer.
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 *  2. Redistributions in binary form must reproduce the above copyright notice,
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 *     this list of conditions and the following disclaimer in the documentation
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 *     and/or other materials provided with the distribution.
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 *  3. The name of the author may not be used to endorse or promote products
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 *     derived from this software without specific prior written permission.
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 *
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 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
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 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
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 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
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 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
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 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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 */
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#include <algorithm>
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#include <iostream>
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#include <map>
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#include <sstream>
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#include <string>
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#include <vector>
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#include "talk/xmpp/chatroommodule.h"
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#include "talk/xmpp/constants.h"
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#include "talk/xmpp/moduleimpl.h"
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#include "webrtc/base/common.h"
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namespace buzz {
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// forward declarations
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class XmppChatroomImpl;
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class XmppChatroomMemberImpl;
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//! Module that encapsulates multiple chatrooms.
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//! Each chatroom is represented by an XmppChatroomImpl instance
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class XmppChatroomModuleImpl : public XmppChatroomModule,
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  public XmppModuleImpl, public XmppIqHandler {
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public:
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  IMPLEMENT_XMPPMODULE
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   // Creates a chatroom with specified Jid
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  XmppChatroomModuleImpl();
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  ~XmppChatroomModuleImpl();
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  // XmppChatroomModule
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  virtual XmppReturnStatus set_chatroom_handler(XmppChatroomHandler* handler);
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  virtual XmppChatroomHandler* chatroom_handler();
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  virtual XmppReturnStatus set_chatroom_jid(const Jid& chatroom_jid);
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  virtual const Jid& chatroom_jid() const;
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  virtual XmppReturnStatus set_nickname(const std::string& nickname);
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  virtual const std::string& nickname() const;
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  virtual const Jid member_jid() const;
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  virtual XmppReturnStatus RequestEnterChatroom(const std::string& password,
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      const std::string& client_version,
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      const std::string& locale);
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  virtual XmppReturnStatus RequestExitChatroom();
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  virtual XmppReturnStatus RequestConnectionStatusChange(
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      XmppPresenceConnectionStatus connection_status);
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  virtual size_t GetChatroomMemberCount();
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  virtual XmppReturnStatus CreateMemberEnumerator(XmppChatroomMemberEnumerator** enumerator);
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  virtual const std::string subject();
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  virtual XmppChatroomState state() { return chatroom_state_; }
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  virtual XmppReturnStatus SendMessage(const XmlElement& message);
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  // XmppModule
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  virtual void IqResponse(XmppIqCookie cookie, const XmlElement * pelStanza) {RTC_UNUSED2(cookie, pelStanza);}
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  virtual bool HandleStanza(const XmlElement *);
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private:
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  friend class XmppChatroomMemberEnumeratorImpl;
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  XmppReturnStatus ServerChangeMyPresence(const XmlElement& presence);
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  XmppReturnStatus ClientChangeMyPresence(XmppChatroomState new_state);
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  XmppReturnStatus ChangePresence(XmppChatroomState new_state, const XmlElement* presence, bool isServer);
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  XmppReturnStatus ServerChangedOtherPresence(const XmlElement& presence_element);
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  XmppChatroomEnteredStatus GetEnterFailureFromXml(const XmlElement* presence);
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  XmppChatroomExitedStatus GetExitFailureFromXml(const XmlElement* presence);
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  bool CheckEnterChatroomStateOk();
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  void FireEnteredStatus(const XmlElement* presence,
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                         XmppChatroomEnteredStatus status);
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  void FireExitStatus(XmppChatroomExitedStatus status);
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  void FireMessageReceived(const XmlElement& message);
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  void FireMemberEntered(const XmppChatroomMember* entered_member);
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  void FireMemberChanged(const XmppChatroomMember* changed_member);
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  void FireMemberExited(const XmppChatroomMember* exited_member);
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  typedef std::map<Jid, XmppChatroomMemberImpl*> JidMemberMap;
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  XmppChatroomHandler*              chatroom_handler_;
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  Jid                               chatroom_jid_;
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  std::string                       nickname_;
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  XmppChatroomState                 chatroom_state_;
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  JidMemberMap                      chatroom_jid_members_;
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  int                               chatroom_jid_members_version_;
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};
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class XmppChatroomMemberImpl : public XmppChatroomMember {
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public:
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  ~XmppChatroomMemberImpl() {}
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  XmppReturnStatus SetPresence(const XmppPresence* presence);
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  // XmppChatroomMember
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  const Jid member_jid() const;
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  const Jid full_jid() const;
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  const std::string name() const;
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  const XmppPresence* presence() const;
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private:
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  rtc::scoped_ptr<XmppPresence>  presence_;
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};
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class XmppChatroomMemberEnumeratorImpl :
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        public XmppChatroomMemberEnumerator  {
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public:
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  XmppChatroomMemberEnumeratorImpl(XmppChatroomModuleImpl::JidMemberMap* chatroom_jid_members,
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                                        int* map_version);
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  // XmppChatroomMemberEnumerator
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  virtual XmppChatroomMember* current();
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  virtual bool Next();
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  virtual bool Prev();
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  virtual bool IsValid();
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  virtual bool IsBeforeBeginning();
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  virtual bool IsAfterEnd();
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private:
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  XmppChatroomModuleImpl::JidMemberMap*           map_;
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  int                                             map_version_created_;
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  int*                                            map_version_;
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  XmppChatroomModuleImpl::JidMemberMap::iterator  iterator_;
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  bool                                            before_beginning_;
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};
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// XmppChatroomModuleImpl ------------------------------------------------
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XmppChatroomModule *
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XmppChatroomModule::Create() {
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  return new XmppChatroomModuleImpl();
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}
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XmppChatroomModuleImpl::XmppChatroomModuleImpl() :
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  chatroom_handler_(NULL),
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  chatroom_jid_(STR_EMPTY),
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  chatroom_state_(XMPP_CHATROOM_STATE_NOT_IN_ROOM),
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  chatroom_jid_members_version_(0) {
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}
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XmppChatroomModuleImpl::~XmppChatroomModuleImpl() {
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  JidMemberMap::iterator iterator = chatroom_jid_members_.begin();
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  while (iterator != chatroom_jid_members_.end()) {
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    delete iterator->second;
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    iterator++;
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  }
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}
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bool
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XmppChatroomModuleImpl::HandleStanza(const XmlElement* stanza) {
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  ASSERT(engine() != NULL);
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  // we handle stanzas that are for one of our chatrooms
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  Jid from_jid = Jid(stanza->Attr(QN_FROM));
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  // see if it's one of our chatrooms
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  if (chatroom_jid_ != from_jid.BareJid()) {
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    return false; // not one of our chatrooms
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  } else {
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    // handle presence stanza
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    if (stanza->Name() == QN_PRESENCE) {
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      if (from_jid == member_jid()) {
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        ServerChangeMyPresence(*stanza);
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      } else {
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        ServerChangedOtherPresence(*stanza);
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      }
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    } else if (stanza->Name() == QN_MESSAGE) {
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      FireMessageReceived(*stanza);
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    }
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    return true;
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  }
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}
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XmppReturnStatus
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XmppChatroomModuleImpl::set_chatroom_handler(XmppChatroomHandler* handler) {
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  // Calling with NULL removes the handler.
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  chatroom_handler_ = handler;
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  return XMPP_RETURN_OK;
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}
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XmppChatroomHandler*
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XmppChatroomModuleImpl::chatroom_handler() {
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  return chatroom_handler_;
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}
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XmppReturnStatus
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XmppChatroomModuleImpl::set_chatroom_jid(const Jid& chatroom_jid) {
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  if (chatroom_state_ != XMPP_CHATROOM_STATE_NOT_IN_ROOM) {
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    return XMPP_RETURN_BADSTATE; // $TODO - this isn't a bad state, it's a bad call,  diff error code?
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  }
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  if (chatroom_jid != chatroom_jid.BareJid()) {
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    // chatroom_jid must be a bare jid
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    return XMPP_RETURN_BADARGUMENT;
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  }
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  chatroom_jid_ = chatroom_jid;
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  return XMPP_RETURN_OK;
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}
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const Jid&
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XmppChatroomModuleImpl::chatroom_jid() const {
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  return chatroom_jid_;
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}
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 XmppReturnStatus
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 XmppChatroomModuleImpl::set_nickname(const std::string& nickname) {
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  if (chatroom_state_ != XMPP_CHATROOM_STATE_NOT_IN_ROOM) {
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    return XMPP_RETURN_BADSTATE; // $TODO - this isn't a bad state, it's a bad call,  diff error code?
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  }
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  nickname_ = nickname;
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  return XMPP_RETURN_OK;
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 }
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 const std::string&
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 XmppChatroomModuleImpl::nickname() const {
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  return nickname_;
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 }
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const Jid
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XmppChatroomModuleImpl::member_jid() const {
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  return Jid(chatroom_jid_.node(), chatroom_jid_.domain(), nickname_);
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}
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bool
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XmppChatroomModuleImpl::CheckEnterChatroomStateOk() {
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  if (chatroom_jid_.IsValid() == false) {
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    ASSERT(0);
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    return false;
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  }
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  if (nickname_ == STR_EMPTY) {
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    ASSERT(0);
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    return false;
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  }
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  return true;
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}
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std::string GetAttrValueFor(XmppPresenceConnectionStatus connection_status) {
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  switch (connection_status) {
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    default:
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    case XMPP_CONNECTION_STATUS_UNKNOWN:
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      return "";
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    case XMPP_CONNECTION_STATUS_CONNECTING:
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      return STR_PSTN_CONFERENCE_STATUS_CONNECTING;
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    case XMPP_CONNECTION_STATUS_CONNECTED:
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      return STR_PSTN_CONFERENCE_STATUS_CONNECTED;
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  }
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}
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XmppReturnStatus
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XmppChatroomModuleImpl::RequestEnterChatroom(
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    const std::string& password,
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    const std::string& client_version,
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    const std::string& locale) {
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  RTC_UNUSED(password);
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  if (!engine())
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    return XMPP_RETURN_BADSTATE;
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  if (chatroom_state_ != XMPP_CHATROOM_STATE_NOT_IN_ROOM)
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    return XMPP_RETURN_BADSTATE; // $TODO - this isn't a bad state, it's a bad call,  diff error code?
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  if (CheckEnterChatroomStateOk() == false) {
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    return XMPP_RETURN_BADSTATE;
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  }
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  // entering a chatroom is a presence request to the server
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  XmlElement element(QN_PRESENCE);
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  element.AddAttr(QN_TO, member_jid().Str());
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  XmlElement* muc_x = new XmlElement(QN_MUC_X);
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  element.AddElement(muc_x);
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  if (!client_version.empty()) {
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    XmlElement* client_version_element = new XmlElement(QN_CLIENT_VERSION,
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                                                        false);
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    client_version_element->SetBodyText(client_version);
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    muc_x->AddElement(client_version_element);
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  }
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  if (!locale.empty()) {
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    XmlElement* locale_element = new XmlElement(QN_LOCALE, false);
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    locale_element->SetBodyText(locale);
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    muc_x->AddElement(locale_element);
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  }
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  XmppReturnStatus status = engine()->SendStanza(&element);
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  if (status == XMPP_RETURN_OK) {
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    return ClientChangeMyPresence(XMPP_CHATROOM_STATE_REQUESTED_ENTER);
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  }
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  return status;
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}
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XmppReturnStatus
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XmppChatroomModuleImpl::RequestExitChatroom() {
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  if (!engine())
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    return XMPP_RETURN_BADSTATE;
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  // exiting a chatroom is a presence request to the server
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  XmlElement element(QN_PRESENCE);
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  element.AddAttr(QN_TO, member_jid().Str());
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  element.AddAttr(QN_TYPE, "unavailable");
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  XmppReturnStatus status = engine()->SendStanza(&element);
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  if (status == XMPP_RETURN_OK &&
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      chatroom_state_ == XMPP_CHATROOM_STATE_IN_ROOM) {
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    return ClientChangeMyPresence(XMPP_CHATROOM_STATE_REQUESTED_EXIT);
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  }
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  return status;
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}
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XmppReturnStatus
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XmppChatroomModuleImpl::RequestConnectionStatusChange(
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    XmppPresenceConnectionStatus connection_status) {
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  if (!engine())
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    return XMPP_RETURN_BADSTATE;
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  if (chatroom_state_ != XMPP_CHATROOM_STATE_IN_ROOM) {
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    // $TODO - this isn't a bad state, it's a bad call,  diff error code?
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    return XMPP_RETURN_BADSTATE;
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  }
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  if (CheckEnterChatroomStateOk() == false) {
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    return XMPP_RETURN_BADSTATE;
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  }
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  // entering a chatroom is a presence request to the server
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  XmlElement element(QN_PRESENCE);
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  element.AddAttr(QN_TO, member_jid().Str());
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  element.AddElement(new XmlElement(QN_MUC_X));
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  if (connection_status != XMPP_CONNECTION_STATUS_UNKNOWN) {
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    XmlElement* con_status_element =
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        new XmlElement(QN_GOOGLE_PSTN_CONFERENCE_STATUS);
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    con_status_element->AddAttr(QN_STATUS, GetAttrValueFor(connection_status));
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    element.AddElement(con_status_element);
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  }
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  XmppReturnStatus status = engine()->SendStanza(&element);
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  return status;
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}
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size_t
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XmppChatroomModuleImpl::GetChatroomMemberCount() {
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  return chatroom_jid_members_.size();
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}
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XmppReturnStatus
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XmppChatroomModuleImpl::CreateMemberEnumerator(XmppChatroomMemberEnumerator** enumerator) {
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  *enumerator = new XmppChatroomMemberEnumeratorImpl(&chatroom_jid_members_, &chatroom_jid_members_version_);
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  return XMPP_RETURN_OK;
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}
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const std::string
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XmppChatroomModuleImpl::subject() {
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  return ""; //NYI
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}
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XmppReturnStatus
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XmppChatroomModuleImpl::SendMessage(const XmlElement& message) {
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  XmppReturnStatus xmpp_status = XMPP_RETURN_OK;
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  // can only send a message if we're in the room
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  if (chatroom_state_ != XMPP_CHATROOM_STATE_IN_ROOM) {
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    return XMPP_RETURN_BADSTATE; // $TODO - this isn't a bad state, it's a bad call,  diff error code?
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  }
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  if (message.Name() != QN_MESSAGE) {
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    IFR(XMPP_RETURN_BADARGUMENT);
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  }
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  const std::string& type = message.Attr(QN_TYPE);
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  if (type != "groupchat") {
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    IFR(XMPP_RETURN_BADARGUMENT);
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  }
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  if (message.HasAttr(QN_FROM)) {
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    IFR(XMPP_RETURN_BADARGUMENT);
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  }
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  if (message.Attr(QN_TO) != chatroom_jid_.Str()) {
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    IFR(XMPP_RETURN_BADARGUMENT);
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  }
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  IFR(engine()->SendStanza(&message));
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  return xmpp_status;
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}
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enum TransitionType {
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  TRANSITION_TYPE_NONE                 = 0,
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  TRANSITION_TYPE_ENTER_SUCCESS        = 1,
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  TRANSITION_TYPE_ENTER_FAILURE        = 2,
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  TRANSITION_TYPE_EXIT_VOLUNTARILY     = 3,
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  TRANSITION_TYPE_EXIT_INVOLUNTARILY   = 4,
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};
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struct StateTransitionDescription {
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  XmppChatroomState old_state;
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  XmppChatroomState new_state;
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  bool              is_valid_server_transition;
 | 
						|
  bool              is_valid_client_transition;
 | 
						|
  TransitionType    transition_type;
 | 
						|
};
 | 
						|
 | 
						|
StateTransitionDescription Transitions[] = {
 | 
						|
  { XMPP_CHATROOM_STATE_NOT_IN_ROOM,     XMPP_CHATROOM_STATE_REQUESTED_ENTER, false, true,  TRANSITION_TYPE_NONE, },
 | 
						|
  { XMPP_CHATROOM_STATE_NOT_IN_ROOM,     XMPP_CHATROOM_STATE_IN_ROOM,         false, false, TRANSITION_TYPE_ENTER_SUCCESS, },
 | 
						|
  { XMPP_CHATROOM_STATE_NOT_IN_ROOM,     XMPP_CHATROOM_STATE_REQUESTED_EXIT,  false, false, TRANSITION_TYPE_NONE, },
 | 
						|
  { XMPP_CHATROOM_STATE_REQUESTED_ENTER, XMPP_CHATROOM_STATE_NOT_IN_ROOM,     true,  false, TRANSITION_TYPE_ENTER_FAILURE, },
 | 
						|
  { XMPP_CHATROOM_STATE_REQUESTED_ENTER, XMPP_CHATROOM_STATE_IN_ROOM,         true,  false, TRANSITION_TYPE_ENTER_SUCCESS, },
 | 
						|
  { XMPP_CHATROOM_STATE_REQUESTED_ENTER, XMPP_CHATROOM_STATE_REQUESTED_EXIT,  false, false, TRANSITION_TYPE_NONE, },
 | 
						|
  { XMPP_CHATROOM_STATE_IN_ROOM,         XMPP_CHATROOM_STATE_NOT_IN_ROOM,     true,  false, TRANSITION_TYPE_EXIT_INVOLUNTARILY,  },
 | 
						|
  { XMPP_CHATROOM_STATE_IN_ROOM,         XMPP_CHATROOM_STATE_REQUESTED_ENTER, false, false, TRANSITION_TYPE_NONE, },
 | 
						|
  { XMPP_CHATROOM_STATE_IN_ROOM,         XMPP_CHATROOM_STATE_REQUESTED_EXIT,  false, true,  TRANSITION_TYPE_NONE, },
 | 
						|
  { XMPP_CHATROOM_STATE_REQUESTED_EXIT,  XMPP_CHATROOM_STATE_NOT_IN_ROOM,     true,  false, TRANSITION_TYPE_EXIT_VOLUNTARILY, },
 | 
						|
  { XMPP_CHATROOM_STATE_REQUESTED_EXIT,  XMPP_CHATROOM_STATE_REQUESTED_ENTER, false, false, TRANSITION_TYPE_NONE, },
 | 
						|
  { XMPP_CHATROOM_STATE_REQUESTED_EXIT,  XMPP_CHATROOM_STATE_IN_ROOM,         false, false, TRANSITION_TYPE_NONE, },
 | 
						|
};
 | 
						|
 | 
						|
 | 
						|
 | 
						|
void
 | 
						|
XmppChatroomModuleImpl::FireEnteredStatus(const XmlElement* presence,
 | 
						|
                                          XmppChatroomEnteredStatus status) {
 | 
						|
  if (chatroom_handler_) {
 | 
						|
    rtc::scoped_ptr<XmppPresence> xmpp_presence(XmppPresence::Create());
 | 
						|
    xmpp_presence->set_raw_xml(presence);
 | 
						|
    chatroom_handler_->ChatroomEnteredStatus(this, xmpp_presence.get(), status);
 | 
						|
  }
 | 
						|
}
 | 
						|
 | 
						|
void
 | 
						|
XmppChatroomModuleImpl::FireExitStatus(XmppChatroomExitedStatus status) {
 | 
						|
  if (chatroom_handler_)
 | 
						|
    chatroom_handler_->ChatroomExitedStatus(this, status);
 | 
						|
}
 | 
						|
 | 
						|
void
 | 
						|
XmppChatroomModuleImpl::FireMessageReceived(const XmlElement& message) {
 | 
						|
  if (chatroom_handler_)
 | 
						|
    chatroom_handler_->MessageReceived(this, message);
 | 
						|
}
 | 
						|
 | 
						|
void
 | 
						|
XmppChatroomModuleImpl::FireMemberEntered(const XmppChatroomMember* entered_member) {
 | 
						|
  if (chatroom_handler_)
 | 
						|
    chatroom_handler_->MemberEntered(this, entered_member);
 | 
						|
}
 | 
						|
 | 
						|
void
 | 
						|
XmppChatroomModuleImpl::FireMemberChanged(
 | 
						|
    const XmppChatroomMember* changed_member) {
 | 
						|
  if (chatroom_handler_)
 | 
						|
    chatroom_handler_->MemberChanged(this, changed_member);
 | 
						|
}
 | 
						|
 | 
						|
void
 | 
						|
XmppChatroomModuleImpl::FireMemberExited(const XmppChatroomMember* exited_member) {
 | 
						|
  if (chatroom_handler_)
 | 
						|
    chatroom_handler_->MemberExited(this, exited_member);
 | 
						|
}
 | 
						|
 | 
						|
 | 
						|
XmppReturnStatus
 | 
						|
XmppChatroomModuleImpl::ServerChangedOtherPresence(const XmlElement&
 | 
						|
                                                   presence_element) {
 | 
						|
  XmppReturnStatus xmpp_status = XMPP_RETURN_OK;
 | 
						|
  rtc::scoped_ptr<XmppPresence> presence(XmppPresence::Create());
 | 
						|
  IFR(presence->set_raw_xml(&presence_element));
 | 
						|
 | 
						|
  JidMemberMap::iterator pos = chatroom_jid_members_.find(presence->jid());
 | 
						|
 | 
						|
  if (pos == chatroom_jid_members_.end()) {
 | 
						|
    if (presence->available() == XMPP_PRESENCE_AVAILABLE) {
 | 
						|
      XmppChatroomMemberImpl* member = new XmppChatroomMemberImpl();
 | 
						|
      member->SetPresence(presence.get());
 | 
						|
      chatroom_jid_members_.insert(std::make_pair(member->member_jid(), member));
 | 
						|
      chatroom_jid_members_version_++;
 | 
						|
      FireMemberEntered(member);
 | 
						|
    }
 | 
						|
  } else {
 | 
						|
    XmppChatroomMemberImpl* member = pos->second;
 | 
						|
    if (presence->available() == XMPP_PRESENCE_AVAILABLE) {
 | 
						|
      member->SetPresence(presence.get());
 | 
						|
      chatroom_jid_members_version_++;
 | 
						|
      FireMemberChanged(member);
 | 
						|
    }
 | 
						|
    else if (presence->available() == XMPP_PRESENCE_UNAVAILABLE) {
 | 
						|
      member->SetPresence(presence.get());
 | 
						|
      chatroom_jid_members_.erase(pos);
 | 
						|
      chatroom_jid_members_version_++;
 | 
						|
      FireMemberExited(member);
 | 
						|
      delete member;
 | 
						|
    }
 | 
						|
  }
 | 
						|
 | 
						|
  return xmpp_status;
 | 
						|
}
 | 
						|
 | 
						|
XmppReturnStatus
 | 
						|
XmppChatroomModuleImpl::ClientChangeMyPresence(XmppChatroomState new_state) {
 | 
						|
  return ChangePresence(new_state, NULL, false);
 | 
						|
}
 | 
						|
 | 
						|
XmppReturnStatus
 | 
						|
XmppChatroomModuleImpl::ServerChangeMyPresence(const XmlElement& presence) {
 | 
						|
   XmppChatroomState new_state;
 | 
						|
 | 
						|
   if (presence.HasAttr(QN_TYPE) == false) {
 | 
						|
      new_state = XMPP_CHATROOM_STATE_IN_ROOM;
 | 
						|
   } else {
 | 
						|
     new_state = XMPP_CHATROOM_STATE_NOT_IN_ROOM;
 | 
						|
   }
 | 
						|
  return ChangePresence(new_state, &presence, true);
 | 
						|
 | 
						|
}
 | 
						|
 | 
						|
XmppReturnStatus
 | 
						|
XmppChatroomModuleImpl::ChangePresence(XmppChatroomState new_state,
 | 
						|
                                       const XmlElement* presence,
 | 
						|
                                       bool isServer) {
 | 
						|
  RTC_UNUSED(presence);
 | 
						|
 | 
						|
  XmppChatroomState old_state = chatroom_state_;
 | 
						|
 | 
						|
  // do nothing if state hasn't changed
 | 
						|
  if (old_state == new_state)
 | 
						|
    return XMPP_RETURN_OK;
 | 
						|
 | 
						|
  // find the right transition description
 | 
						|
  StateTransitionDescription* transition_desc = NULL;
 | 
						|
  for (int i=0; i < ARRAY_SIZE(Transitions); i++) {
 | 
						|
    if (Transitions[i].old_state == old_state &&
 | 
						|
        Transitions[i].new_state == new_state) {
 | 
						|
        transition_desc = &Transitions[i];
 | 
						|
        break;
 | 
						|
    }
 | 
						|
  }
 | 
						|
 | 
						|
  if (transition_desc == NULL) {
 | 
						|
    ASSERT(0);
 | 
						|
    return XMPP_RETURN_BADSTATE;
 | 
						|
  }
 | 
						|
 | 
						|
  // we assert for any invalid transition states, and we'll
 | 
						|
  if (isServer) {
 | 
						|
    // $TODO send original stanza back to server and log an error?
 | 
						|
    // Disable the assert because of b/6133072
 | 
						|
    // ASSERT(transition_desc->is_valid_server_transition);
 | 
						|
    if (!transition_desc->is_valid_server_transition) {
 | 
						|
      return XMPP_RETURN_BADSTATE;
 | 
						|
    }
 | 
						|
  } else {
 | 
						|
    if (transition_desc->is_valid_client_transition == false) {
 | 
						|
      ASSERT(0);
 | 
						|
      return XMPP_RETURN_BADARGUMENT;
 | 
						|
    }
 | 
						|
  }
 | 
						|
 | 
						|
  // set the new state and then fire any notifications to the handler
 | 
						|
  chatroom_state_ = new_state;
 | 
						|
 | 
						|
  switch (transition_desc->transition_type) {
 | 
						|
    case TRANSITION_TYPE_ENTER_SUCCESS:
 | 
						|
      FireEnteredStatus(presence, XMPP_CHATROOM_ENTERED_SUCCESS);
 | 
						|
      break;
 | 
						|
    case TRANSITION_TYPE_ENTER_FAILURE:
 | 
						|
      FireEnteredStatus(presence, GetEnterFailureFromXml(presence));
 | 
						|
      break;
 | 
						|
    case TRANSITION_TYPE_EXIT_INVOLUNTARILY:
 | 
						|
      FireExitStatus(GetExitFailureFromXml(presence));
 | 
						|
      break;
 | 
						|
    case TRANSITION_TYPE_EXIT_VOLUNTARILY:
 | 
						|
      FireExitStatus(XMPP_CHATROOM_EXITED_REQUESTED);
 | 
						|
      break;
 | 
						|
    case TRANSITION_TYPE_NONE:
 | 
						|
      break;
 | 
						|
  }
 | 
						|
 | 
						|
  return XMPP_RETURN_OK;
 | 
						|
}
 | 
						|
 | 
						|
XmppChatroomEnteredStatus
 | 
						|
XmppChatroomModuleImpl::GetEnterFailureFromXml(const XmlElement* presence) {
 | 
						|
  XmppChatroomEnteredStatus status = XMPP_CHATROOM_ENTERED_FAILURE_UNSPECIFIED;
 | 
						|
  const XmlElement* error = presence->FirstNamed(QN_ERROR);
 | 
						|
  if (error != NULL && error->HasAttr(QN_CODE)) {
 | 
						|
    int code = atoi(error->Attr(QN_CODE).c_str());
 | 
						|
    switch (code) {
 | 
						|
      case 401: status = XMPP_CHATROOM_ENTERED_FAILURE_PASSWORD_REQUIRED; break;
 | 
						|
      case 403: {
 | 
						|
        status = XMPP_CHATROOM_ENTERED_FAILURE_MEMBER_BANNED;
 | 
						|
        if (error->FirstNamed(QN_GOOGLE_SESSION_BLOCKED)) {
 | 
						|
          status = XMPP_CHATROOM_ENTERED_FAILURE_MEMBER_BLOCKED;
 | 
						|
        } else if (error->FirstNamed(QN_GOOGLE_SESSION_BLOCKING)) {
 | 
						|
          status = XMPP_CHATROOM_ENTERED_FAILURE_MEMBER_BLOCKING;
 | 
						|
        }
 | 
						|
        break;
 | 
						|
      }
 | 
						|
      case 405: status = XMPP_CHATROOM_ENTERED_FAILURE_ROOM_LOCKED; break;
 | 
						|
      case 406: status = XMPP_CHATROOM_ENTERED_FAILURE_OUTDATED_CLIENT; break;
 | 
						|
      case 407: status = XMPP_CHATROOM_ENTERED_FAILURE_NOT_A_MEMBER; break;
 | 
						|
      case 409: status = XMPP_CHATROOM_ENTERED_FAILURE_NICKNAME_CONFLICT; break;
 | 
						|
      // http://xmpp.org/extensions/xep-0045.html#enter-maxusers
 | 
						|
      case 503: status = XMPP_CHATROOM_ENTERED_FAILURE_MAX_USERS; break;
 | 
						|
    }
 | 
						|
  }
 | 
						|
  return status;
 | 
						|
}
 | 
						|
 | 
						|
XmppChatroomExitedStatus
 | 
						|
XmppChatroomModuleImpl::GetExitFailureFromXml(const XmlElement* presence) {
 | 
						|
  XmppChatroomExitedStatus status = XMPP_CHATROOM_EXITED_UNSPECIFIED;
 | 
						|
  const XmlElement* muc_user = presence->FirstNamed(QN_MUC_USER_X);
 | 
						|
  if (muc_user != NULL) {
 | 
						|
    const XmlElement* user_status = muc_user->FirstNamed(QN_MUC_USER_STATUS);
 | 
						|
    if (user_status != NULL && user_status->HasAttr(QN_CODE)) {
 | 
						|
      int code = atoi(user_status->Attr(QN_CODE).c_str());
 | 
						|
      switch (code) {
 | 
						|
        case 307: status = XMPP_CHATROOM_EXITED_KICKED; break;
 | 
						|
        case 322: status = XMPP_CHATROOM_EXITED_NOT_A_MEMBER; break;
 | 
						|
        case 332: status = XMPP_CHATROOM_EXITED_SYSTEM_SHUTDOWN; break;
 | 
						|
      }
 | 
						|
    }
 | 
						|
  }
 | 
						|
  return status;
 | 
						|
}
 | 
						|
 | 
						|
XmppReturnStatus
 | 
						|
XmppChatroomMemberImpl::SetPresence(const XmppPresence* presence) {
 | 
						|
  ASSERT(presence != NULL);
 | 
						|
 | 
						|
  // copy presence
 | 
						|
  presence_.reset(XmppPresence::Create());
 | 
						|
  presence_->set_raw_xml(presence->raw_xml());
 | 
						|
  return XMPP_RETURN_OK;
 | 
						|
}
 | 
						|
 | 
						|
const Jid
 | 
						|
XmppChatroomMemberImpl::member_jid() const {
 | 
						|
  return presence_->jid();
 | 
						|
}
 | 
						|
 | 
						|
const Jid
 | 
						|
XmppChatroomMemberImpl::full_jid() const {
 | 
						|
  return Jid("");
 | 
						|
}
 | 
						|
 | 
						|
const std::string
 | 
						|
XmppChatroomMemberImpl::name() const {
 | 
						|
  return member_jid().resource();
 | 
						|
}
 | 
						|
 | 
						|
const XmppPresence*
 | 
						|
XmppChatroomMemberImpl::presence() const {
 | 
						|
  return presence_.get();
 | 
						|
}
 | 
						|
 | 
						|
 | 
						|
// XmppChatroomMemberEnumeratorImpl --------------------------------------
 | 
						|
XmppChatroomMemberEnumeratorImpl::XmppChatroomMemberEnumeratorImpl(
 | 
						|
        XmppChatroomModuleImpl::JidMemberMap* map, int* map_version) {
 | 
						|
  map_ = map;
 | 
						|
  map_version_ = map_version;
 | 
						|
  map_version_created_ = *map_version_;
 | 
						|
  iterator_ = map->begin();
 | 
						|
  before_beginning_ = true;
 | 
						|
}
 | 
						|
 | 
						|
XmppChatroomMember*
 | 
						|
XmppChatroomMemberEnumeratorImpl::current() {
 | 
						|
  if (IsValid() == false) {
 | 
						|
    return NULL;
 | 
						|
  } else if (IsBeforeBeginning() || IsAfterEnd()) {
 | 
						|
    return NULL;
 | 
						|
  } else {
 | 
						|
    return iterator_->second;
 | 
						|
  }
 | 
						|
}
 | 
						|
 | 
						|
bool
 | 
						|
XmppChatroomMemberEnumeratorImpl::Prev() {
 | 
						|
  if (IsValid() == false) {
 | 
						|
    return false;
 | 
						|
  } else if (IsBeforeBeginning()) {
 | 
						|
    return false;
 | 
						|
  } else if (iterator_ == map_->begin()) {
 | 
						|
    before_beginning_ = true;
 | 
						|
    return false;
 | 
						|
  } else {
 | 
						|
    iterator_--;
 | 
						|
    return current() != NULL;
 | 
						|
  }
 | 
						|
}
 | 
						|
 | 
						|
bool
 | 
						|
XmppChatroomMemberEnumeratorImpl::Next() {
 | 
						|
  if (IsValid() == false) {
 | 
						|
    return false;
 | 
						|
  } else if (IsBeforeBeginning()) {
 | 
						|
    before_beginning_ = false;
 | 
						|
    iterator_ = map_->begin();
 | 
						|
    return current() != NULL;
 | 
						|
  } else if (IsAfterEnd()) {
 | 
						|
    return false;
 | 
						|
  } else {
 | 
						|
    iterator_++;
 | 
						|
    return current() != NULL;
 | 
						|
  }
 | 
						|
}
 | 
						|
 | 
						|
bool
 | 
						|
XmppChatroomMemberEnumeratorImpl::IsValid() {
 | 
						|
  return map_version_created_ == *map_version_;
 | 
						|
}
 | 
						|
 | 
						|
bool
 | 
						|
XmppChatroomMemberEnumeratorImpl::IsBeforeBeginning() {
 | 
						|
  return before_beginning_;
 | 
						|
}
 | 
						|
 | 
						|
bool
 | 
						|
XmppChatroomMemberEnumeratorImpl::IsAfterEnd() {
 | 
						|
  return (iterator_ == map_->end());
 | 
						|
}
 | 
						|
 | 
						|
 | 
						|
 | 
						|
} // namespace buzz
 |