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Server Class Reference

Allows server output and query functions This class contains methods which allow a module to query the state of the irc server, and produce output to users and other servers. More...

#include <modules.h>

Inherits classbase.

List of all members.

Public Member Functions

 Server ()
 Default constructor.

virtual ~Server ()
 Default destructor.

virtual void SendOpers (std::string s)
 Sends text to all opers.

virtual void Log (int level, std::string s)
 Writes a log string.

virtual void Send (int Socket, std::string s)
 Sends a line of text down a TCP/IP socket.

virtual void SendServ (int Socket, std::string s)
 Sends text from the server to a socket.

virtual void SendFrom (int Socket, userrec *User, std::string s)
 Sends text from a user to a socket.

virtual void SendTo (userrec *Source, userrec *Dest, std::string s)
 Sends text from a user to another user.

virtual void SendChannel (userrec *User, chanrec *Channel, std::string s, bool IncludeSender)
 Sends text from a user to a channel (mulicast).

virtual bool CommonChannels (userrec *u1, userrec *u2)
 Returns true if two users share a common channel.

virtual void SendCommon (userrec *User, std::string text, bool IncludeSender)
 Sends text from a user to one or more channels (mulicast).

virtual void SendWallops (userrec *User, std::string text)
 Sends a WALLOPS message.

virtual bool IsNick (std::string nick)
 Returns true if a nick is valid.

virtual int CountUsers (chanrec *c)
 Returns a count of the number of users on a channel.

virtual userrecFindNick (std::string nick)
 Attempts to look up a nick and return a pointer to it.

virtual chanrecFindChannel (std::string channel)
 Attempts to look up a channel and return a pointer to it.

virtual std::string ChanMode (userrec *User, chanrec *Chan)
 Attempts to look up a user's privilages on a channel.

virtual bool IsOnChannel (userrec *User, chanrec *Chan)
 Checks if a user is on a channel.

virtual std::string GetServerName ()
 Returns the server name of the server where the module is loaded.

virtual std::string GetNetworkName ()
 Returns the network name, global to all linked servers.

virtual Admin GetAdmin ()
 Returns the information of the server as returned by the /ADMIN command.

virtual bool AddExtendedMode (char modechar, int type, bool requires_oper, int params_when_on, int params_when_off)
 Adds an extended mode letter which is parsed by a module.

virtual bool AddExtendedListMode (char modechar)
 Adds an extended mode letter which is parsed by a module and handled in a list fashion.

virtual void AddCommand (char *cmd, handlerfunc f, char flags, int minparams, char *source)
 Adds a command to the command table.

virtual void SendMode (char **parameters, int pcnt, userrec *user)
 Sends a servermode.

virtual void SendToModeMask (std::string modes, int flags, std::string text)
 Sends to all users matching a mode mask You must specify one or more usermodes as the first parameter.

virtual chanrecJoinUserToChannel (userrec *user, std::string cname, std::string key)
 Forces a user to join a channel.

virtual chanrecPartUserFromChannel (userrec *user, std::string cname, std::string reason)
 Forces a user to part a channel.

virtual void ChangeUserNick (userrec *user, std::string nickname)
 Forces a user nickchange.

virtual void QuitUser (userrec *user, std::string reason)
 Forces a user to quit with the specified reason.

virtual bool MatchText (std::string sliteral, std::string spattern)
 Matches text against a glob pattern.

virtual void CallCommandHandler (std::string commandname, char **parameters, int pcnt, userrec *user)
 Calls the handler for a command, either implemented by the core or by another module.

virtual void ChangeHost (userrec *user, std::string host)
 Change displayed hostname of a user.

virtual void ChangeGECOS (userrec *user, std::string gecos)
 Change GECOS (fullname) of a user.

virtual bool IsUlined (std::string server)
 Returns true if the servername you give is ulined.

virtual chanuserlist GetUsers (chanrec *chan)
 Fetches the userlist of a channel.


Detailed Description

Allows server output and query functions This class contains methods which allow a module to query the state of the irc server, and produce output to users and other servers.

All modules should instantiate at least one copy of this class, and use its member functions to perform their tasks.

Definition at line 376 of file modules.h.


Constructor & Destructor Documentation

Server::Server  ) 
 

Default constructor.

Creates a Server object.

Definition at line 339 of file modules.cpp.

00340 {
00341 }

Server::~Server  )  [virtual]
 

Default destructor.

Destroys a Server object.

Definition at line 343 of file modules.cpp.

00344 {
00345 }


Member Function Documentation

void Server::AddCommand char *  cmd,
handlerfunc  f,
char  flags,
int  minparams,
char *  source
[virtual]
 

Adds a command to the command table.

This allows modules to add extra commands into the command table. You must place a function within your module which is is of type handlerfunc:

typedef void (handlerfunc) (char**, int, userrec*); ... void handle_kill(char **parameters, int pcnt, userrec *user)

When the command is typed, the parameters will be placed into the parameters array (similar to argv) and the parameter count will be placed into pcnt (similar to argv). There will never be any less parameters than the 'minparams' value you specified when creating the command. The *user parameter is the class of the user which caused the command to trigger, who will always have the flag you specified in 'flags' when creating the initial command. For example to create an oper only command create the commands with flags='o'. The source parameter is used for resource tracking, and should contain the name of your module (with file extension) e.g. "m_blarp.so". If you place the wrong identifier here, you can cause crashes if your module is unloaded.

Definition at line 420 of file modules.cpp.

References createcommand().

00421 {
00422         createcommand(cmd,f,flags,minparams,source);
00423 }

bool Server::AddExtendedListMode char  modechar  )  [virtual]
 

Adds an extended mode letter which is parsed by a module and handled in a list fashion.

This call is used to implement modes like +q and +a. The characteristics of these modes are as follows:

(1) They are ALWAYS on channels, not on users, therefore their type is MT_CHANNEL

(2) They always take exactly one parameter when being added or removed

(3) They can be set multiple times, usually on users in channels

(4) The mode and its parameter are NOT stored in the channels modes structure

It is down to the module handling the mode to maintain state and determine what 'items' (e.g. users, or a banlist) have the mode set on them, and process the modes at the correct times, e.g. during access checks on channels, etc. When the extended mode is triggered the OnExtendedMode method will be triggered as above. Note that the target you are given will be a channel, if for example your mode is set 'on a user' (in for example +a) you must use Server::Find to locate the user the mode is operating on. Your mode handler may return 1 to handle the mode AND tell the core to display the mode change, e.g. '+aaa one two three' in the case of the mode for 'two', or it may return -1 to 'eat' the mode change, so the above example would become '+aa one three' after processing.

Definition at line 565 of file modules.cpp.

References DoAddExtendedMode(), ModeMakeList(), and MT_CHANNEL.

00566 {
00567         bool res = DoAddExtendedMode(modechar,MT_CHANNEL,false,1,1);
00568         if (res)
00569                 ModeMakeList(modechar);
00570         return res;
00571 }

bool Server::AddExtendedMode char  modechar,
int  type,
bool  requires_oper,
int  params_when_on,
int  params_when_off
[virtual]
 

Adds an extended mode letter which is parsed by a module.

This allows modules to add extra mode letters, e.g. +x for hostcloak. the "type" parameter is either MT_CHANNEL, MT_CLIENT, or MT_SERVER, to indicate wether the mode is a channel mode, a client mode, or a server mode. requires_oper is used with MT_CLIENT type modes only to indicate the mode can only be set or unset by an oper. If this is used for MT_CHANNEL type modes it is ignored. params_when_on is the number of modes to expect when the mode is turned on (for type MT_CHANNEL only), e.g. with mode +k, this would have a value of 1. the params_when_off value has a similar value to params_when_on, except it indicates the number of parameters to expect when the mode is disabled. Modes which act in a similar way to channel mode +l (e.g. require a parameter to enable, but not to disable) should use this parameter. The function returns false if the mode is unavailable, and will not attempt to allocate another character, as this will confuse users. This also means that as only one module can claim a specific mode character, the core does not need to keep track of which modules own which modes, which speeds up operation of the server. In this version, a mode can have at most one parameter, attempting to use more parameters will have undefined effects.

Definition at line 545 of file modules.cpp.

References DEBUG, DoAddExtendedMode(), MT_CLIENT, and MT_SERVER.

00546 {
00547         if (type == MT_SERVER)
00548         {
00549                 log(DEBUG,"*** API ERROR *** Modes of type MT_SERVER are reserved for future expansion");
00550                 return false;
00551         }
00552         if (((params_when_on>0) || (params_when_off>0)) && (type == MT_CLIENT))
00553         {
00554                 log(DEBUG,"*** API ERROR *** Parameters on MT_CLIENT modes are not supported");
00555                 return false;
00556         }
00557         if ((params_when_on>1) || (params_when_off>1))
00558         {
00559                 log(DEBUG,"*** API ERROR *** More than one parameter for an MT_CHANNEL mode is not yet supported");
00560                 return false;
00561         }
00562         return DoAddExtendedMode(modechar,type,requires_oper,params_when_on,params_when_off);
00563 }

void Server::CallCommandHandler std::string  commandname,
char **  parameters,
int  pcnt,
userrec user
[virtual]
 

Calls the handler for a command, either implemented by the core or by another module.

You can use this function to trigger other commands in the ircd, such as PRIVMSG, JOIN, KICK etc, or even as a method of callback. By defining command names that are untypeable for users on irc (e.g. those which contain a or
) you may use them as callback identifiers. The first parameter to this method is the name of the command handler you wish to call, e.g. PRIVMSG. This will be a command handler previously registered by the core or wih AddCommand(). The second parameter is an array of parameters, and the third parameter is a count of parameters in the array. If you do not pass enough parameters to meet the minimum needed by the handler, the functiom will silently ignore it. The final parameter is the user executing the command handler, used for privilage checks, etc.

Definition at line 410 of file modules.cpp.

00411 {
00412         call_handler(commandname.c_str(),parameters,pcnt,user);
00413 }

void Server::ChangeGECOS userrec user,
std::string  gecos
[virtual]
 

Change GECOS (fullname) of a user.

You should always call this method to change a user's GECOS rather than writing directly to the fullname member of userrec, as any change applied via this method will be propogated to any linked servers.

Definition at line 498 of file modules.cpp.

References ChangeName().

00499 {
00500         ChangeName(user,gecos.c_str());
00501 }

void Server::ChangeHost userrec user,
std::string  host
[virtual]
 

Change displayed hostname of a user.

You should always call this method to change a user's host rather than writing directly to the dhost member of userrec, as any change applied via this method will be propogated to any linked servers.

Definition at line 493 of file modules.cpp.

References ChangeDisplayedHost().

00494 {
00495         ChangeDisplayedHost(user,host.c_str());
00496 }

void Server::ChangeUserNick userrec user,
std::string  nickname
[virtual]
 

Forces a user nickchange.

This command works similarly to SVSNICK, and can be used to implement Q-lines etc. If you specify an invalid nickname, the nick change will be dropped and the target user will receive the error numeric for it.

Definition at line 394 of file modules.cpp.

00395 {
00396         force_nickchange(user,nickname.c_str());
00397 }

std::string Server::ChanMode userrec User,
chanrec Chan
[virtual]
 

Attempts to look up a user's privilages on a channel.

This function will return a string containing either @, , +, or an empty string, representing the user's privilages upon the channel you specify.

Definition at line 518 of file modules.cpp.

References cmode().

00519 {
00520         return cmode(User,Chan);
00521 }

bool Server::CommonChannels userrec u1,
userrec u2
[virtual]
 

Returns true if two users share a common channel.

This method is used internally by the NICK and QUIT commands, and the Server::SendCommon method.

Definition at line 471 of file modules.cpp.

References common_channels().

00472 {
00473         return (common_channels(u1,u2) != 0);
00474 }

int Server::CountUsers chanrec c  )  [virtual]
 

Returns a count of the number of users on a channel.

This will NEVER be 0, as if the chanrec exists, it will have at least one user in the channel.

Definition at line 573 of file modules.cpp.

00574 {
00575         return usercount(c);
00576 }

chanrec * Server::FindChannel std::string  channel  )  [virtual]
 

Attempts to look up a channel and return a pointer to it.

This function will return NULL if the channel does not exist.

Definition at line 513 of file modules.cpp.

00514 {
00515         return FindChan(channel.c_str());
00516 }

userrec * Server::FindNick std::string  nick  )  [virtual]
 

Attempts to look up a nick and return a pointer to it.

This function will return NULL if the nick does not exist.

Definition at line 508 of file modules.cpp.

00509 {
00510         return Find(nick);
00511 }

Admin Server::GetAdmin  )  [virtual]
 

Returns the information of the server as returned by the /ADMIN command.

See the Admin class for further information of the return value. The members Admin::Nick, Admin::Email and Admin::Name contain the information for the server where the module is loaded.

Definition at line 538 of file modules.cpp.

00539 {
00540         return Admin(getadminname(),getadminemail(),getadminnick());
00541 }

std::string Server::GetNetworkName  )  [virtual]
 

Returns the network name, global to all linked servers.

Definition at line 533 of file modules.cpp.

00534 {
00535         return getnetworkname();
00536 }

std::string Server::GetServerName  )  [virtual]
 

Returns the server name of the server where the module is loaded.

Definition at line 528 of file modules.cpp.

00529 {
00530         return getservername();
00531 }

chanuserlist Server::GetUsers chanrec chan  )  [virtual]
 

Fetches the userlist of a channel.

This function must be here and not a member of userrec or chanrec due to include constraints.

Definition at line 375 of file modules.cpp.

References chanuserlist, clientlist, has_channel(), and isnick().

00376 {
00377         chanuserlist userl;
00378         userl.clear();
00379         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
00380         {
00381                 if (i->second)
00382                 {
00383                         if (has_channel(i->second,chan))
00384                         {
00385                                 if (isnick(i->second->nick))
00386                                 {
00387                                         userl.push_back(i->second);
00388                                 }
00389                         }
00390                 }
00391         }
00392         return userl;
00393 }

bool Server::IsNick std::string  nick  )  [virtual]
 

Returns true if a nick is valid.

Nicks for unregistered connections will return false.

Definition at line 503 of file modules.cpp.

References isnick().

00504 {
00505         return (isnick(nick.c_str()) != 0);
00506 }

bool Server::IsOnChannel userrec User,
chanrec Chan
[virtual]
 

Checks if a user is on a channel.

This function will return true or false to indicate if user 'User' is on channel 'Chan'.

Definition at line 523 of file modules.cpp.

References has_channel().

00524 {
00525         return has_channel(User,Chan);
00526 }

bool Server::IsUlined std::string  server  )  [virtual]
 

Returns true if the servername you give is ulined.

ULined servers have extra privilages. They are allowed to change nicknames on remote servers, change modes of clients which are on remote servers and set modes of channels where there are no channel operators for that channel on the ulined server, amongst other things. Ulined server data is also broadcast across the mesh at all times as opposed to selectively messaged in the case of normal servers, as many ulined server types (such as services) do not support meshed links and must operate in this manner.

Definition at line 405 of file modules.cpp.

References is_uline().

00406 {
00407         return is_uline(server.c_str());
00408 }

chanrec * Server::JoinUserToChannel userrec user,
std::string  cname,
std::string  key
[virtual]
 

Forces a user to join a channel.

This is similar to svsjoin and can be used to implement redirection, etc. On success, the return value is a valid pointer to a chanrec* of the channel the user was joined to. On failure, the result is NULL.

Definition at line 365 of file modules.cpp.

00366 {
00367         return add_channel(user,cname.c_str(),key.c_str(),true);
00368 }

void Server::Log int  level,
std::string  s
[virtual]
 

Writes a log string.

This method writes a line of text to the log. If the level given is lower than the level given in the configuration, this command has no effect.

Definition at line 415 of file modules.cpp.

00416 {
00417         log(level,"%s",s.c_str());
00418 }

bool Server::MatchText std::string  sliteral,
std::string  spattern
[virtual]
 

Matches text against a glob pattern.

Uses the ircd's internal matching function to match string against a globbing pattern, e.g. *!*@*.com Returns true if the literal successfully matches the pattern, false if otherwise.

Definition at line 352 of file modules.cpp.

00353 {
00354         char literal[MAXBUF],pattern[MAXBUF];
00355         strlcpy(literal,sliteral.c_str(),MAXBUF);
00356         strlcpy(pattern,spattern.c_str(),MAXBUF);
00357         return match(literal,pattern);
00358 }

chanrec * Server::PartUserFromChannel userrec user,
std::string  cname,
std::string  reason
[virtual]
 

Forces a user to part a channel.

This is similar to svspart and can be used to implement redirection, etc. Although the return value of this function is a pointer to a channel record, the returned data is undefined and should not be read or written to. This behaviour may be changed in a future version.

Definition at line 370 of file modules.cpp.

00371 {
00372         return del_channel(user,cname.c_str(),reason.c_str(),false);
00373 }

void Server::QuitUser userrec user,
std::string  reason
[virtual]
 

Forces a user to quit with the specified reason.

To the user, it will appear as if they typed /QUIT themselves, except for the fact that this function may bypass the quit prefix specified in the config file.

WARNING!

Once you call this function, userrec* user will immediately become INVALID. You MUST NOT write to, or read from this pointer after calling the QuitUser method UNDER ANY CIRCUMSTANCES! The best course of action after calling this method is to immediately bail from your handler.

Definition at line 399 of file modules.cpp.

References userrec::nick, and send_network_quit().

00400 {
00401         send_network_quit(user->nick,reason.c_str());
00402         kill_link(user,reason.c_str());
00403 }

void Server::Send int  Socket,
std::string  s
[virtual]
 

Sends a line of text down a TCP/IP socket.

This method writes a line of text to an established socket, cutting it to 510 characters plus a carriage return and linefeed if required.

Definition at line 430 of file modules.cpp.

00431 {
00432         Write(Socket,"%s",s.c_str());
00433 }

void Server::SendChannel userrec User,
chanrec Channel,
std::string  s,
bool  IncludeSender
[virtual]
 

Sends text from a user to a channel (mulicast).

This method writes a line of text to a channel, with the given user's nick/ident /host combination prepended, as used in PRIVMSG etc commands (see RFC 1459). If the IncludeSender flag is set, then the text is also sent back to the user from which it originated, as seen in MODE (see RFC 1459).

Definition at line 459 of file modules.cpp.

00460 {
00461         if (IncludeSender)
00462         {
00463                 WriteChannel(Channel,User,"%s",s.c_str());
00464         }
00465         else
00466         {
00467                 ChanExceptSender(Channel,User,"%s",s.c_str());
00468         }
00469 }

void Server::SendCommon userrec User,
std::string  text,
bool  IncludeSender
[virtual]
 

Sends text from a user to one or more channels (mulicast).

This method writes a line of text to all users which share a common channel with a given user, with the user's nick/ident/host combination prepended, as used in PRIVMSG etc commands (see RFC 1459). If the IncludeSender flag is set, then the text is also sent back to the user from which it originated, as seen in NICK (see RFC 1459). Otherwise, it is only sent to the other recipients, as seen in QUIT.

Definition at line 476 of file modules.cpp.

00477 {
00478         if (IncludeSender)
00479         {
00480                 WriteCommon(User,"%s",text.c_str());
00481         }
00482         else
00483         {
00484                 WriteCommonExcept(User,"%s",text.c_str());
00485         }
00486 }

void Server::SendFrom int  Socket,
userrec User,
std::string  s
[virtual]
 

Sends text from a user to a socket.

This method writes a line of text to an established socket, with the given user's nick/ident /host combination prepended, as used in PRIVSG etc commands (see RFC 1459)

Definition at line 440 of file modules.cpp.

00441 {
00442         WriteFrom(Socket,User,"%s",s.c_str());
00443 }

void Server::SendMode char **  parameters,
int  pcnt,
userrec user
[virtual]
 

Sends a servermode.

you must format the parameters array with the target, modes and parameters for those modes.

For example:

char *modes[3];

modes[0] = ChannelName;

modes[1] = "+o";

modes[2] = user->nick;

Srv->SendMode(modes,3,user);

The modes will originate from the server where the command was issued, however responses (e.g. numerics) will be sent to the user you provide as the third parameter. You must be sure to get the number of parameters correct in the pcnt parameter otherwise you could leave your server in an unstable state!

Definition at line 425 of file modules.cpp.

References server_mode().

00426 {
00427         server_mode(parameters,pcnt,user);
00428 }

void Server::SendOpers std::string  s  )  [virtual]
 

Sends text to all opers.

This method sends a server notice to all opers with the usermode +s.

Definition at line 347 of file modules.cpp.

00348 {
00349         WriteOpers("%s",s.c_str());
00350 }

void Server::SendServ int  Socket,
std::string  s
[virtual]
 

Sends text from the server to a socket.

This method writes a line of text to an established socket, with the servername prepended as used by numerics (see RFC 1459)

Definition at line 435 of file modules.cpp.

00436 {
00437         WriteServ(Socket,"%s",s.c_str());
00438 }

void Server::SendTo userrec Source,
userrec Dest,
std::string  s
[virtual]
 

Sends text from a user to another user.

This method writes a line of text to a user, with a user's nick/ident /host combination prepended, as used in PRIVMSG etc commands (see RFC 1459) If you specify NULL as the source, then the data will originate from the local server, e.g. instead of:

:user!ident TEXT

The format will become:

:localserver TEXT

Which is useful for numerics and server notices to single users, etc.

Definition at line 445 of file modules.cpp.

References connection::fd.

00446 {
00447         if (!Source)
00448         {
00449                 // if source is NULL, then the message originates from the local server
00450                 Write(Dest->fd,":%s %s",this->GetServerName().c_str(),s.c_str());
00451         }
00452         else
00453         {
00454                 // otherwise it comes from the user specified
00455                 WriteTo(Source,Dest,"%s",s.c_str());
00456         }
00457 }

void Server::SendToModeMask std::string  modes,
int  flags,
std::string  text
[virtual]
 

Sends to all users matching a mode mask You must specify one or more usermodes as the first parameter.

These can be RFC specified modes such as +i, or module provided modes, including ones provided by your own module. In the second parameter you must place a flag value which indicates wether the modes you have given will be logically ANDed or OR'ed. You may use one of either WM_AND or WM_OR. for example, if you were to use:

Serv->SendToModeMask("xi", WM_OR, "m00");

Then the text 'm00' will be sent to all users with EITHER mode x or i. Conversely if you used WM_AND, the user must have both modes set to receive the message.

Definition at line 360 of file modules.cpp.

00361 {
00362         WriteMode(modes.c_str(),flags,"%s",text.c_str());
00363 }

void Server::SendWallops userrec User,
std::string  text
[virtual]
 

Sends a WALLOPS message.

This method writes a WALLOPS message to all users with the +w flag, originating from the specified user.

Definition at line 488 of file modules.cpp.

00489 {
00490         WriteWallOps(User,false,"%s",text.c_str());
00491 }


The documentation for this class was generated from the following files:
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