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/* +------------------------------------+
* | Inspire Internet Relay Chat Daemon |
* +------------------------------------+
*
* InspIRCd: (C) 2002-2007 InspIRCd Development Team
* See: http://www.inspircd.org/wiki/index.php/Credits
*
* This program is free but copyrighted software; see
* the file COPYING for details.
*
* ---------------------------------------------------
*/
#ifndef __COMMAND_PARSE_H
#define __COMMAND_PARSE_H
#include <string>
#include "users.h"
#include "ctables.h"
#include "typedefs.h"
/** Required forward declaration
*/
class InspIRCd;
/** A list of dll/so files containing the command handlers for the core
*/
typedef std::map<std::string, void*> SharedObjectList;
/** This class handles command management and parsing.
* It allows you to add and remove commands from the map,
* call command handlers by name, and chop up comma seperated
* parameters into multiple calls.
*/
class CoreExport CommandParser : public classbase
{
private:
/** The creator of this class
*/
InspIRCd* ServerInstance;
/** Parameter buffer
*/
std::vector<std::string> para;
/** Process a parameter string into a list of items
* @param command_p The output list of items
* @param parameters The input string
* @return The number of parameters parsed into command_p
*/
int ProcessParameters(char **command_p,char *parameters);
/** Process a command from a user.
* @param user The user to parse the command for
* @param cmd The command string to process
*/
void ProcessCommand(userrec *user, std::string &cmd);
/** Insert the default RFC1459 commands into the command hash.
*/
void SetupCommandTable();
/** Finds the init_command symbol in a .so file
* @param v A function pointer to be initialized
* @param h A valid shared object handle
* @return True if the symbol could be found
*/
bool FindSym(void** v, void* h);
/** A list of core-implemented modes and their shared object handles
*/
SharedObjectList RFCCommands;
/** Load a command from a shared object on disk.
* @param name The shared object to load (without path)
*/
void LoadCommand(const char* name);
/** Removes a command if the sources match. Used as a helper for
* safe hash_map delete while iter in RemoveCommands(const char* source).
*/
void RemoveCommand(nspace::hash_map<std::string,command_t*>::iterator safei, const char* source);
public:
/** Command list, a hash_map of command names to command_t*
*/
command_table cmdlist;
/** Reload a core command.
* This will only reload commands implemented by the core,
* to reload a modular command, you must reload that module.
* @param cmd The command to reload. This will cause the shared
* object which implements this command to be closed, and then reloaded.
* @return True if the command was reloaded, false if it could not be found
* or another error occured
*/
bool ReloadCommand(const char* cmd);
/** Default constructor.
* @param Instance The creator of this class
*/
CommandParser(InspIRCd* Instance);
/** Calls the handler for a given command.
* @param commandname The command to find. This should be in uppercase.
* @param parameters Parameter list as an array of array of char (that's not a typo).
* @param pcnt The number of items in the parameters list
* @param user The user to call the handler on behalf of
* @return This method will return CMD_SUCCESS if the command handler was found and called,
* and the command completeld successfully. It will return CMD_FAILURE if the command handler was found
* and called, but the command did not complete successfully, and it will return CMD_INVALID if the
* command simply did not exist at all or the wrong number of parameters were given, or the user
* was not privilaged enough to execute the command.
*/
CmdResult CallHandler(const std::string &commandname,const char** parameters, int pcnt, userrec *user);
/** Get the handler function for a command.
* @param commandname The command required. Always use uppercase for this parameter.
* @return a pointer to the command handler, or NULL
*/
command_t* GetHandler(const std::string &commandname);
/** This function returns true if a command is valid with the given number of parameters and user.
* @param commandname The command name to check
* @param pcnt The parameter count
* @param user The user to check against
* @return If the user given has permission to execute the command, and the parameter count is
* equal to or greater than the minimum number of parameters to the given command, then this
* function will return true, otherwise it will return false.
*/
bool IsValidCommand(const std::string &commandname, int pcnt, userrec * user);
/** LoopCall is used to call a command classes handler repeatedly based on the contents of a comma seperated list.
* There are two overriden versions of this method, one of which takes two potential lists and the other takes one.
* We need a version which takes two potential lists for JOIN, because a JOIN may contain two lists of items at once,
* the channel names and their keys as follows:
*
* JOIN #chan1,#chan2,#chan3 key1,,key3
*
* Therefore, we need to deal with both lists concurrently. The first instance of this method does that by creating
* two instances of irc::commasepstream and reading them both together until the first runs out of tokens.
* The second version is much simpler and just has the one stream to read, and is used in NAMES, WHOIS, PRIVMSG etc.
* Both will only parse until they reach ServerInstance->Config->MaxTargets number of targets, to stop abuse via spam.
*
* @param user The user who sent the command
* @param CommandObj the command object to call for each parameter in the list
* @param parameters Parameter list as an array of array of char (that's not a typo).
* @param The number of items in the parameters list
* @param splithere The first parameter index to split as a comma seperated list
* @param extra The second parameter index to split as a comma seperated list
* @return This function will return 1 when there are no more parameters to process. When this occurs, its
* caller should return without doing anything, otherwise it should continue into its main section of code.
*/
int LoopCall(userrec* user, command_t* CommandObj, const char** parameters, int pcnt, unsigned int splithere, unsigned int extra);
/** LoopCall is used to call a command classes handler repeatedly based on the contents of a comma seperated list.
* There are two overriden versions of this method, one of which takes two potential lists and the other takes one.
* We need a version which takes two potential lists for JOIN, because a JOIN may contain two lists of items at once,
* the channel names and their keys as follows:
*
* JOIN #chan1,#chan2,#chan3 key1,,key3
*
* Therefore, we need to deal with both lists concurrently. The first instance of this method does that by creating
* two instances of irc::commasepstream and reading them both together until the first runs out of tokens.
* The second version is much simpler and just has the one stream to read, and is used in NAMES, WHOIS, PRIVMSG etc.
* Both will only parse until they reach ServerInstance->Config->MaxTargets number of targets, to stop abuse via spam.
*
* @param user The user who sent the command
* @param CommandObj the command object to call for each parameter in the list
* @param parameters Parameter list as an array of array of char (that's not a typo).
* @param The number of items in the parameters list
* @param splithere The first parameter index to split as a comma seperated list
* @param extra The second parameter index to split as a comma seperated list
* @return This function will return 1 when there are no more parameters to process. When this occurs, its
* caller should return without doing anything, otherwise it should continue into its main section of code.
*/
int LoopCall(userrec* user, command_t* CommandObj, const char** parameters, int pcnt, unsigned int splithere);
/** Take a raw input buffer from a recvq, and process it on behalf of a user.
* @param buffer The buffer line to process
* @param user The user to whom this line belongs
*/
void ProcessBuffer(std::string &buffer,userrec *user);
/** Remove all commands relating to module 'source'.
* @param source A module name which has introduced new commands
* @return True This function returns true if commands were removed
*/
bool RemoveCommands(const char* source);
/** Add a new command to the commands hash
* @param f The new command_t to add to the list
* @param so_handle The handle to the shared object where the command can be found.
* Only core commands loaded via cmd_*.so files should set this parameter to anything
* meaningful. Module authors should leave this parameter at its default of NULL.
* @return True if the command was added
*/
bool CreateCommand(command_t *f, void* so_handle = NULL);
};
/** Command handler class for the RELOAD command.
* A command cant really reload itself, so this has to be in here.
*/
class cmd_reload : public command_t
{
public:
/** Standard constructor
*/
cmd_reload (InspIRCd* Instance) : command_t(Instance,"RELOAD",'o',1) { syntax = "<core-command>"; }
/** Handle RELOAD
*/
CmdResult Handle(const char** parameters, int pcnt, userrec *user);
};
/** A lookup table of values for multiplier characters used by
* InspIRCd::Duration(). In this lookup table, the indexes for
* the ascii values 'm' and 'M' have the value '60', the indexes
* for the ascii values 'D' and 'd' have a value of '86400', etc.
*/
const int duration_multi[] =
{
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 86400, 1, 1, 1, 3600,
1, 1, 1, 1, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1,
604800, 1, 31536000, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 86400, 1, 1, 1, 3600, 1, 1, 1, 1, 60,
1, 1, 1, 1, 1, 1, 1, 1, 1, 604800, 1, 31536000,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1
};
#endif
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