/* +------------------------------------+ * | Inspire Internet Relay Chat Daemon | * +------------------------------------+ * * InspIRCd is copyright (C) 2002-2006 ChatSpike-Dev. * E-mail: * * * * Written by Craig Edwards, Craig McLure, and others. * This program is free but copyrighted software; see * the file COPYING for details. * * --------------------------------------------------- */ #ifndef __USERS_H__ #define __USERS_H__ #include #ifdef THREADED_DNS #include #endif #include "inspircd_config.h" #include "socket.h" #include "channels.h" #include "inspstring.h" #include "connection.h" #include "hashcomp.h" #include "cull_list.h" enum ChanStatus { STATUS_OP = 4, STATUS_HOP = 2, STATUS_VOICE = 1, STATUS_NORMAL = 0 }; enum ClassTypes { CC_ALLOW = 0, CC_DENY = 1 }; /** RFC1459 channel modes * */ enum UserModes { UM_SERVERNOTICE = 's'-65, UM_WALLOPS = 'w'-65, UM_INVISIBLE = 'i'-65, UM_OPERATOR = 'o'-65, }; /** Holds a channel name to which a user has been invited. */ class Invited : public classbase { public: irc::string channel; }; /** Holds information relevent to <connect allow> and <connect deny> tags in the config file. */ class ConnectClass : public classbase { public: /** Type of line, either CC_ALLOW or CC_DENY */ char type; /** Max time to register the connection in seconds */ int registration_timeout; /** Number of lines in buffer before excess flood is triggered */ int flood; /** Host mask for this line */ std::string host; /** Number of seconds between pings for this line */ int pingtime; /** (Optional) Password for this line */ std::string pass; /** Threshold value for flood disconnect */ int threshold; /** Maximum size of sendq for users in this class (bytes) */ long sendqmax; /** Maximum size of recvq for users in this class (bytes) */ long recvqmax; /** Local max when connecting by this connection class */ long maxlocal; /** Global max when connecting by this connection class */ long maxglobal; ConnectClass() : registration_timeout(0), flood(0), host(""), pingtime(0), pass(""), threshold(0), sendqmax(0), recvqmax(0) { } }; /** Holds a complete list of all channels to which a user has been invited and has not yet joined. */ typedef std::vector InvitedList; /** Holds a complete list of all allow and deny tags from the configuration file (connection classes) */ typedef std::vector ClassVector; /** Typedef for the list of user-channel records for a user */ typedef std::vector UserChanList; /** Holds all information about a user * This class stores all information about a user connected to the irc server. Everything about a * connection is stored here primarily, from the user's socket ID (file descriptor) through to the * user's nickname and hostname. Use the Find method of the server class to locate a specific user * by nickname. */ class userrec : public connection { private: /** A list of channels the user has a pending invite to. */ InvitedList invites; public: /** The users nickname. * An invalid nickname indicates an unregistered connection prior to the NICK command. */ char nick[NICKMAX]; /** The users ident reply. * Two characters are added to the user-defined limit to compensate for the tilde etc. */ char ident[IDENTMAX+2]; /** The host displayed to non-opers (used for cloaking etc). * This usually matches the value of userrec::host. */ char dhost[65]; /** The users full name. */ char fullname[MAXGECOS+1]; /** The user's mode list. * This is NOT a null terminated string! In the 1.1 version of InspIRCd * this is an array of values in a similar way to channel modes. * A value of 1 in field (modeletter-65) indicates that the mode is * set, for example, to work out if mode +s is set, we check the field * userrec::modes['s'-65] != 0. * The following RFC characters o, w, s, i have constants defined via an * enum, such as UM_SERVERNOTICE and UM_OPETATOR. */ char modes[64]; UserChanList chans; /** The server the user is connected to. */ const char* server; /** The user's away message. * If this string is empty, the user is not marked as away. */ char awaymsg[MAXAWAY+1]; /** Number of lines the user can place into the buffer * (up to the global NetBufferSize bytes) before they * are disconnected for excess flood */ int flood; /** Number of seconds this user is given to send USER/NICK * If they do not send their details in this time limit they * will be disconnected */ unsigned int timeout; /** The oper type they logged in as, if they are an oper. * This is used to check permissions in operclasses, so that * we can say 'yay' or 'nay' to any commands they issue. * The value of this is the value of a valid 'type name=' tag. */ char oper[NICKMAX]; /** True when DNS lookups are completed. */ bool dns_done; /** Number of seconds between PINGs for this user (set from <connect:allow> tag */ unsigned int pingmax; /** Password specified by the user when they registered. * This is stored even if the block doesnt need a password, so that * modules may check it. */ char password[64]; /** User's receive queue. * Lines from the IRCd awaiting processing are stored here. * Upgraded april 2005, old system a bit hairy. */ std::string recvq; /** User's send queue. * Lines waiting to be sent are stored here until their buffer is flushed. */ std::string sendq; /** Flood counters */ int lines_in; time_t reset_due; long threshold; /** IPV4 ip address */ in_addr ip4; /* Write error string */ std::string WriteError; /** Maximum size this user's sendq can become */ long sendqmax; /** Maximum size this user's recvq can become */ long recvqmax; /** Default constructor */ userrec(); /** Returns the full displayed host of the user * This member function returns the hostname of the user as seen by other users * on the server, in nick!ident&at;host form. */ virtual char* GetFullHost(); /** Returns the full real host of the user * This member function returns the hostname of the user as seen by other users * on the server, in nick!ident&at;host form. If any form of hostname cloaking is in operation, * e.g. through a module, then this method will ignore it and return the true hostname. */ virtual char* GetFullRealHost(); /* * Create a displayable mode string for this users umodes */ const char* FormatModes(); bool HasMode(unsigned char m); /** Returns true if a user is invited to a channel. */ virtual bool IsInvited(irc::string &channel); /** Adds a channel to a users invite list (invites them to a channel) */ virtual void InviteTo(irc::string &channel); /** Removes a channel from a users invite list. * This member function is called on successfully joining an invite only channel * to which the user has previously been invited, to clear the invitation. */ virtual void RemoveInvite(irc::string &channel); /** Returns true or false for if a user can execute a privilaged oper command. * This is done by looking up their oper type from userrec::oper, then referencing * this to their oper classes and checking the commands they can execute. */ bool HasPermission(const std::string &command); /** Calls read() to read some data for this user using their fd. */ int ReadData(void* buffer, size_t size); /** This method adds data to the buffer of the user. * The buffer can grow to any size within limits of the available memory, * managed by the size of a std::string, however if any individual line in * the buffer grows over 600 bytes in length (which is 88 chars over the * RFC-specified limit per line) then the method will return false and the * text will not be inserted. */ bool AddBuffer(const std::string &a); /** This method returns true if the buffer contains at least one carriage return * character (e.g. one complete line may be read) */ bool BufferIsReady(); /** This function clears the entire buffer by setting it to an empty string. */ void ClearBuffer(); /** This method returns the first available string at the tail end of the buffer * and advances the tail end of the buffer past the string. This means it is * a one way operation in a similar way to strtok(), and multiple calls return * multiple lines if they are available. The results of this function if there * are no lines to be read are unknown, always use BufferIsReady() to check if * it is ok to read the buffer before calling GetBuffer(). */ std::string GetBuffer(); /** Sets the write error for a connection. This is done because the actual disconnect * of a client may occur at an inopportune time such as half way through /LIST output. * The WriteErrors of clients are checked at a more ideal time (in the mainloop) and * errored clients purged. */ void SetWriteError(const std::string &error); /** Returns the write error which last occured on this connection or an empty string * if none occured. */ const char* GetWriteError(); /** Adds to the user's write buffer. * You may add any amount of text up to this users sendq value, if you exceed the * sendq value, SetWriteError() will be called to set the users error string to * "SendQ exceeded", and further buffer adds will be dropped. */ void AddWriteBuf(const std::string &data); /** Flushes as much of the user's buffer to the file descriptor as possible. * This function may not always flush the entire buffer, rather instead as much of it * as it possibly can. If the send() call fails to send the entire buffer, the buffer * position is advanced forwards and the rest of the data sent at the next call to * this method. */ void FlushWriteBuf(); /** Returns the list of channels this user has been invited to but has not yet joined. */ InvitedList* GetInviteList(); /** Creates a wildcard host. * Takes a buffer to use and fills the given buffer with the host in the format *!*@hostname */ char* MakeWildHost(); /** Creates a host. * Takes a buffer to use and fills the given buffer with the host in the format nick!user@host */ void MakeHost(char* nhost); /** Shuts down and closes the user's socket */ void CloseSocket(); /** Default destructor */ virtual ~userrec(); #ifdef THREADED_DNS /** Thread used for threaded lookups */ pthread_t dnsthread; #endif }; /** Used to hold WHOWAS information */ class WhoWasGroup { public: char* host; char* dhost; char* ident; const char* server; char* gecos; time_t signon; WhoWasGroup(userrec* user); ~WhoWasGroup(); }; typedef std::deque whowas_set; typedef std::map whowas_users; void AddOper(userrec* user); void DeleteOper(userrec* user); void kill_link(userrec *user,const char* r); void kill_link_silent(userrec *user,const char* r); void AddWhoWas(userrec* u); void MaintainWhoWas(time_t TIME); void AddClient(int socket, int port, bool iscached, in_addr ip4); void FullConnectUser(userrec* user, CullList* Goners); userrec* ReHashNick(char* Old, char* New); void force_nickchange(userrec* user,const char* newnick); /* Configuration callbacks */ bool InitTypes(const char* tag); bool InitClasses(const char* tag); bool DoType(const char* tag, char** entries, void** values, int* types); bool DoClass(const char* tag, char** entries, void** values, int* types); bool DoneClassesAndTypes(const char* tag); long FindMatchingGlobal(userrec* user); long FindMatchingLocal(userrec* user); #endif