152 lines
4.9 KiB
C++
Executable File
152 lines
4.9 KiB
C++
Executable File
/*
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OSCgroups -- open sound control groupcasting infrastructure
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Copyright (C) 2005 Ross Bencina
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#ifndef INCLUDED_GROUPSERVER_H
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#define INCLUDED_GROUPSERVER_H
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// GroupServer.h/cpp implements user and group admission control using passwords
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// Users live as long as they are sending alive messages more frequency
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// than the timeout value. Groups live as long as they have members.
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// Once Users and Groups are destroyed they can be reused with different
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// passwords.
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// This module has no dependence on the messaging protocol, although it does
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// assume IPV4 addresses.
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#include <ctime>
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#include <map>
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#include <set>
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#include <string>
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#include "ip/IpEndpointName.h"
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class User;
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class Group;
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class GroupServer;
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class User{
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friend class GroupServer;
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std::set<Group*> groups_;
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public:
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User( const char *userName, const char *userPassword )
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: name( userName )
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, password( userPassword ) {}
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std::string name;
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std::string password;
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IpEndpointName privateEndpoint;
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IpEndpointName publicEndpoint;
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std::time_t lastAliveMessageArrivalTime;
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unsigned long SecondsSinceLastAliveReceived( std::time_t currentTime )
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{ return (unsigned long)std::difftime( currentTime, lastAliveMessageArrivalTime ); }
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bool IsMemberOf( Group *group ) const
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{ return groups_.count( group ) == 1; }
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typedef std::set<Group*>::const_iterator const_group_iterator;
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const_group_iterator groups_begin() const { return groups_.begin(); }
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const_group_iterator groups_end() const { return groups_.end(); }
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};
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class Group{
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friend class GroupServer;
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std::set<User*> users_;
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public:
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Group( const char *groupName, const char *groupPassword )
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: name( groupName )
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, password( groupPassword ) {}
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std::string name;
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std::string password;
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typedef std::set<User*>::const_iterator const_user_iterator;
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const_user_iterator users_begin() const { return users_.begin(); }
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const_user_iterator users_end() const { return users_.end(); }
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};
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class GroupServer{
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const int timeoutSeconds_;
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const int maxUsers_;
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const int maxGroups_;
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typedef std::map< std::string, User* > user_map;
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typedef user_map::iterator user_iterator;
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user_map users_;
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int userCount_;
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typedef std::map< std::string, Group* > group_map;
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typedef group_map::iterator group_iterator;
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group_map groups_;
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int groupCount_;
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User *CreateUser( const char *userName, const char *userPassword );
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Group *CreateGroup( const char *groupName, const char *groupPassword );
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void AssociateUserWithGroup( User *user, Group* group );
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void RemoveUserReferenceFromGroup( User *user, Group* group );
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void SeparateUserFromGroup( User *user, Group* group );
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void SeparateUserFromAllGroups( User *user );
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GroupServer(); // no default ctor
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GroupServer( const GroupServer& ); // no copy ctor
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GroupServer& operator=( const GroupServer& ); // no assignment operator
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public:
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GroupServer( int timeoutSeconds, int maxUsers, int maxGroups );
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~GroupServer();
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enum UserStatus {
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USER_STATUS_UNKNOWN,
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USER_STATUS_OK,
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USER_STATUS_WRONG_PASSWORD,
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USER_STATUS_SERVER_LIMIT_REACHED
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};
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UserStatus UserAlive( const char *userName, const char *userPassword,
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const IpEndpointName& privateEndpoint,
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const IpEndpointName& publicEndpoint,
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const char **groupNamesAndPasswords,
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UserStatus *userGroupsStatus, int groupCount );
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typedef user_map::const_iterator const_user_iterator;
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const_user_iterator users_begin() const { return users_.begin(); }
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const_user_iterator users_end() const { return users_.end(); }
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User *FindUser( const char *userName );
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typedef group_map::const_iterator const_group_iterator;
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const_group_iterator groups_begin() const { return groups_.begin(); }
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const_group_iterator groups_end() const { return groups_.end(); }
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Group *FindGroup( const char *groupName );
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void PurgeStaleUsers();
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};
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#endif /* INCLUDED_GROUPSERVER_H */
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