/* * Original work: Copyright (c) 2014, Oculus VR, Inc. * All rights reserved. * * This source code is licensed under the BSD-style license found in the * RakNet License.txt file in the licenses directory of this source tree. An additional grant * of patent rights can be found in the RakNet Patents.txt file in the same directory. * * * Modified work: Copyright (c) 2017, SLikeSoft UG (haftungsbeschränkt) * * This source code was modified by SLikeSoft. Modifications are licensed under the MIT-style * license found in the license.txt file in the root directory of this source tree. */ /// \file CommandParserInterface.h /// \brief Contains CommandParserInterface , from which you derive custom command parsers /// #ifndef __COMMAND_PARSER_INTERFACE #define __COMMAND_PARSER_INTERFACE #include "memoryoverride.h" #include "types.h" #include "DS_OrderedList.h" #include "Export.h" namespace SLNet { /// Forward declarations class TransportInterface; /// \internal /// Contains the information related to one command registered with RegisterCommand() /// Implemented so I can have an automatic help system via SendCommandList() struct RAK_DLL_EXPORT RegisteredCommand { const char *command; const char *commandHelp; unsigned char parameterCount; }; /// List of commands registered with RegisterCommand() int RAK_DLL_EXPORT RegisteredCommandComp( const char* const & key, const RegisteredCommand &data ); /// \brief The interface used by command parsers. /// \details CommandParserInterface provides a set of functions and interfaces that plug into the ConsoleServer class. /// Each CommandParserInterface works at the same time as other interfaces in the system. class RAK_DLL_EXPORT CommandParserInterface { public: CommandParserInterface(); virtual ~CommandParserInterface(); /// You are responsible for overriding this function and returning a static string, which will identifier your parser. /// This should return a static string /// \return The name that you return. virtual const char *GetName(void) const=0; /// \brief A callback for when \a systemAddress has connected to us. /// \param[in] systemAddress The player that has connected. /// \param[in] transport The transport interface that sent us this information. Can be used to send messages to this or other players. virtual void OnNewIncomingConnection(const SystemAddress &systemAddress, TransportInterface *transport); /// \brief A callback for when \a systemAddress has disconnected, either gracefully or forcefully /// \param[in] systemAddress The player that has disconnected. /// \param[in] transport The transport interface that sent us this information. virtual void OnConnectionLost(const SystemAddress &systemAddress, TransportInterface *transport); /// \brief A callback for when you are expected to send a brief description of your parser to \a systemAddress /// \param[in] transport The transport interface we can use to write to /// \param[in] systemAddress The player that requested help. virtual void SendHelp(TransportInterface *transport, const SystemAddress &systemAddress)=0; /// \brief Given \a command with parameters \a parameterList , do whatever processing you wish. /// \param[in] command The command to process /// \param[in] numParameters How many parameters were passed along with the command /// \param[in] parameterList The list of parameters. parameterList[0] is the first parameter and so on. /// \param[in] transport The transport interface we can use to write to /// \param[in] systemAddress The player that sent this command. /// \param[in] originalString The string that was actually sent over the network, in case you want to do your own parsing virtual bool OnCommand(const char *command, unsigned numParameters, char **parameterList, TransportInterface *transport, const SystemAddress &systemAddress, const char *originalString)=0; /// \brief This is called every time transport interface is registered. /// \details If you want to save a copy of the TransportInterface pointer /// This is the place to do it /// \param[in] transport The new TransportInterface virtual void OnTransportChange(TransportInterface *transport); /// \internal /// Scan commandList and return the associated array /// \param[in] command The string to find /// \param[out] rc Contains the result of this operation /// \return True if we found the command, false otherwise virtual bool GetRegisteredCommand(const char *command, RegisteredCommand *rc); /// \internal /// Goes through str, replacing the delineating character with 0's. /// \param[in] str The string sent by the transport interface /// \param[in] delineator The character to scan for to use as a delineator /// \param[in] delineatorToggle When encountered the delineator replacement is toggled on and off /// \param[out] numParameters How many pointers were written to \a parameterList /// \param[out] parameterList An array of pointers to characters. Will hold pointers to locations inside \a str /// \param[in] parameterListLength How big the \a parameterList array is static void ParseConsoleString(char *str, const char delineator, unsigned char delineatorToggle, unsigned *numParameters, char **parameterList, unsigned parameterListLength); /// \internal /// Goes through the variable commandList and sends the command portion of each struct /// \param[in] transport The transport interface we can use to write to /// \param[in] systemAddress The player to write to virtual void SendCommandList(TransportInterface *transport, const SystemAddress &systemAddress); static const unsigned char VARIABLE_NUMBER_OF_PARAMETERS; // Currently only takes static strings - doesn't make a copy of what you pass. // parameterCount is the number of parameters that the sender has to include with the command. // Pass 255 to parameterCount to indicate variable number of parameters /// Registers a command. /// \param[in] parameterCount How many parameters your command requires. If you want to accept a variable number of commands, pass CommandParserInterface::VARIABLE_NUMBER_OF_PARAMETERS /// \param[in] command A pointer to a STATIC string that has your command. I keep a copy of the pointer here so don't deallocate the string. /// \param[in] commandHelp A pointer to a STATIC string that has the help information for your command. I keep a copy of the pointer here so don't deallocate the string. virtual void RegisterCommand(unsigned char parameterCount, const char *command, const char *commandHelp); /// \brief Just writes a string to the remote system based on the result ( \a res ) of your operation /// \details This is not necessary to call, but makes it easier to return results of function calls. /// \param[in] res The result to write /// \param[in] command The command that this result came from /// \param[in] transport The transport interface that will be written to /// \param[in] systemAddress The player this result will be sent to virtual void ReturnResult(bool res, const char *command, TransportInterface *transport, const SystemAddress &systemAddress); virtual void ReturnResult(char *res, const char *command, TransportInterface *transport, const SystemAddress &systemAddress); virtual void ReturnResult(SystemAddress res, const char *command, TransportInterface *transport, const SystemAddress &systemAddress); virtual void ReturnResult(int res, const char *command,TransportInterface *transport, const SystemAddress &systemAddress); /// \brief Just writes a string to the remote system when you are calling a function that has no return value. /// \details This is not necessary to call, but makes it easier to return results of function calls. /// \param[in] res The result to write /// \param[in] command The command that this result came from /// \param[in] transport The transport interface that will be written to /// \param[in] systemAddress The player this result will be sent to virtual void ReturnResult(const char *command,TransportInterface *transport, const SystemAddress &systemAddress); protected: DataStructures::OrderedList commandList; }; } // namespace SLNet #endif