1 /* +------------------------------------+
2 * | Inspire Internet Relay Chat Daemon |
3 * +------------------------------------+
5 * InspIRCd is copyright (C) 2002-2006 ChatSpike-Dev.
7 * <brain@chatspike.net>
8 * <Craig@chatspike.net>
10 * Written by Craig Edwards, Craig McLure, and others.
11 * This program is free but copyrighted software; see
12 * the file COPYING for details.
14 * ---------------------------------------------------
21 #include "inspircd_config.h"
24 #include "inspstring.h"
25 #include "connection.h"
28 #include "cull_list.h"
42 /** RFC1459 channel modes
45 UM_SERVERNOTICE = 's'-65,
47 UM_INVISIBLE = 'i'-65,
51 enum RegistrationState {
52 REG_NONE = 0, /* Has sent nothing */
53 REG_USER = 1, /* Has sent USER */
54 REG_NICK = 2, /* Has sent NICK */
55 REG_NICKUSER = 3, /* Bitwise combination of REG_NICK and REG_USER */
56 REG_ALL = 7 /* REG_NICKUSER plus next bit along */
59 /** Holds a channel name to which a user has been invited.
61 class Invited : public classbase
69 /** Derived from Resolver, and performs user forward/reverse lookups.
71 class UserResolver : public Resolver
74 /** User this class is 'attached' to.
80 UserResolver(userrec* user, std::string to_resolve, bool forward);
82 void OnLookupComplete(const std::string &result);
83 void OnError(ResolverError e, const std::string &errormessage);
87 /** Holds information relevent to <connect allow> and <connect deny> tags in the config file.
89 class ConnectClass : public classbase
92 /** Type of line, either CC_ALLOW or CC_DENY
95 /** Max time to register the connection in seconds
97 int registration_timeout;
98 /** Number of lines in buffer before excess flood is triggered
101 /** Host mask for this line
104 /** Number of seconds between pings for this line
107 /** (Optional) Password for this line
111 /** Threshold value for flood disconnect
115 /** Maximum size of sendq for users in this class (bytes)
119 /** Maximum size of recvq for users in this class (bytes)
123 /** Local max when connecting by this connection class
127 /** Global max when connecting by this connection class
131 ConnectClass() : registration_timeout(0), flood(0), host(""), pingtime(0), pass(""), threshold(0), sendqmax(0), recvqmax(0)
136 /** Holds a complete list of all channels to which a user has been invited and has not yet joined.
138 typedef std::vector<Invited> InvitedList;
142 /** Holds a complete list of all allow and deny tags from the configuration file (connection classes)
144 typedef std::vector<ConnectClass> ClassVector;
146 /** Typedef for the list of user-channel records for a user
148 typedef std::vector<ucrec*> UserChanList;
150 /** Holds all information about a user
151 * This class stores all information about a user connected to the irc server. Everything about a
152 * connection is stored here primarily, from the user's socket ID (file descriptor) through to the
153 * user's nickname and hostname. Use the Find method of the server class to locate a specific user
156 class userrec : public connection
160 /** A list of channels the user has a pending invite to.
164 /** Resolvers for looking up this users hostname
166 UserResolver* res_forward;
167 UserResolver* res_reverse;
168 std::string stored_host;
170 void StartDNSLookup();
172 /** The users nickname.
173 * An invalid nickname indicates an unregistered connection prior to the NICK command.
178 /** The users ident reply.
179 * Two characters are added to the user-defined limit to compensate for the tilde etc.
181 char ident[IDENTMAX+2];
183 /** The host displayed to non-opers (used for cloaking etc).
184 * This usually matches the value of userrec::host.
188 /** The users full name.
190 char fullname[MAXGECOS+1];
192 /** The user's mode list.
193 * This is NOT a null terminated string! In the 1.1 version of InspIRCd
194 * this is an array of values in a similar way to channel modes.
195 * A value of 1 in field (modeletter-65) indicates that the mode is
196 * set, for example, to work out if mode +s is set, we check the field
197 * userrec::modes['s'-65] != 0.
198 * The following RFC characters o, w, s, i have constants defined via an
199 * enum, such as UM_SERVERNOTICE and UM_OPETATOR.
203 /** What snomasks are set on this user.
204 * This functions the same as the above modes.
210 /** The server the user is connected to.
214 /** The user's away message.
215 * If this string is empty, the user is not marked as away.
217 char awaymsg[MAXAWAY+1];
219 /** Number of lines the user can place into the buffer
220 * (up to the global NetBufferSize bytes) before they
221 * are disconnected for excess flood
225 /** Number of seconds this user is given to send USER/NICK
226 * If they do not send their details in this time limit they
227 * will be disconnected
229 unsigned int timeout;
231 /** The oper type they logged in as, if they are an oper.
232 * This is used to check permissions in operclasses, so that
233 * we can say 'yay' or 'nay' to any commands they issue.
234 * The value of this is the value of a valid 'type name=' tag.
238 /** True when DNS lookups are completed.
242 /** Number of seconds between PINGs for this user (set from <connect:allow> tag
244 unsigned int pingmax;
246 /** Password specified by the user when they registered.
247 * This is stored even if the <connect> block doesnt need a password, so that
248 * modules may check it.
252 /** User's receive queue.
253 * Lines from the IRCd awaiting processing are stored here.
254 * Upgraded april 2005, old system a bit hairy.
258 /** User's send queue.
259 * Lines waiting to be sent are stored here until their buffer is flushed.
273 /* Write error string
275 std::string WriteError;
277 /** Maximum size this user's sendq can become
281 /** Maximum size this user's recvq can become
285 /** Default constructor
289 /** Returns the full displayed host of the user
290 * This member function returns the hostname of the user as seen by other users
291 * on the server, in nick!ident&at;host form.
293 virtual char* GetFullHost();
295 /** Returns the full real host of the user
296 * This member function returns the hostname of the user as seen by other users
297 * on the server, in nick!ident&at;host form. If any form of hostname cloaking is in operation,
298 * e.g. through a module, then this method will ignore it and return the true hostname.
300 virtual char* GetFullRealHost();
303 * Create a displayable mode string for this users umodes
305 const char* FormatNoticeMasks();
307 bool userrec::ProcessNoticeMasks(const char *sm);
309 bool IsNoticeMaskSet(unsigned char sm);
311 void SetNoticeMask(unsigned char sm, bool value);
314 * Create a displayable mode string for this users umodes
316 const char* FormatModes();
318 bool IsModeSet(unsigned char m);
320 void SetMode(unsigned char m, bool value);
322 /** Returns true if a user is invited to a channel.
324 virtual bool IsInvited(irc::string &channel);
326 /** Adds a channel to a users invite list (invites them to a channel)
328 virtual void InviteTo(irc::string &channel);
330 /** Removes a channel from a users invite list.
331 * This member function is called on successfully joining an invite only channel
332 * to which the user has previously been invited, to clear the invitation.
334 virtual void RemoveInvite(irc::string &channel);
336 /** Returns true or false for if a user can execute a privilaged oper command.
337 * This is done by looking up their oper type from userrec::oper, then referencing
338 * this to their oper classes and checking the commands they can execute.
340 bool HasPermission(const std::string &command);
342 /** Calls read() to read some data for this user using their fd.
344 int ReadData(void* buffer, size_t size);
346 /** This method adds data to the buffer of the user.
347 * The buffer can grow to any size within limits of the available memory,
348 * managed by the size of a std::string, however if any individual line in
349 * the buffer grows over 600 bytes in length (which is 88 chars over the
350 * RFC-specified limit per line) then the method will return false and the
351 * text will not be inserted.
353 bool AddBuffer(const std::string &a);
355 /** This method returns true if the buffer contains at least one carriage return
356 * character (e.g. one complete line may be read)
358 bool BufferIsReady();
360 /** This function clears the entire buffer by setting it to an empty string.
364 /** This method returns the first available string at the tail end of the buffer
365 * and advances the tail end of the buffer past the string. This means it is
366 * a one way operation in a similar way to strtok(), and multiple calls return
367 * multiple lines if they are available. The results of this function if there
368 * are no lines to be read are unknown, always use BufferIsReady() to check if
369 * it is ok to read the buffer before calling GetBuffer().
371 std::string GetBuffer();
373 /** Sets the write error for a connection. This is done because the actual disconnect
374 * of a client may occur at an inopportune time such as half way through /LIST output.
375 * The WriteErrors of clients are checked at a more ideal time (in the mainloop) and
376 * errored clients purged.
378 void SetWriteError(const std::string &error);
380 /** Returns the write error which last occured on this connection or an empty string
383 const char* GetWriteError();
385 /** Adds to the user's write buffer.
386 * You may add any amount of text up to this users sendq value, if you exceed the
387 * sendq value, SetWriteError() will be called to set the users error string to
388 * "SendQ exceeded", and further buffer adds will be dropped.
390 void AddWriteBuf(const std::string &data);
392 /** Flushes as much of the user's buffer to the file descriptor as possible.
393 * This function may not always flush the entire buffer, rather instead as much of it
394 * as it possibly can. If the send() call fails to send the entire buffer, the buffer
395 * position is advanced forwards and the rest of the data sent at the next call to
398 void FlushWriteBuf();
400 /** Returns the list of channels this user has been invited to but has not yet joined.
402 InvitedList* GetInviteList();
404 /** Creates a wildcard host.
405 * Takes a buffer to use and fills the given buffer with the host in the format *!*@hostname
407 char* MakeWildHost();
410 * Takes a buffer to use and fills the given buffer with the host in the format nick!user@host
412 void MakeHost(char* nhost);
414 /** Shuts down and closes the user's socket
418 /** Default destructor
423 /** Used to hold WHOWAS information
425 class WhoWasGroup : public classbase
435 WhoWasGroup(userrec* user);
439 typedef std::deque<WhoWasGroup*> whowas_set;
440 typedef std::map<irc::string,whowas_set*> whowas_users;
442 void AddOper(userrec* user);
443 void DeleteOper(userrec* user);
444 void kill_link(userrec *user,const char* r);
445 void kill_link_silent(userrec *user,const char* r);
446 void AddWhoWas(userrec* u);
447 void MaintainWhoWas(time_t TIME);
448 void AddClient(int socket, int port, bool iscached, insp_inaddr ip4);
449 void FullConnectUser(userrec* user, CullList* Goners);
450 userrec* ReHashNick(const char* Old, const char* New);
451 void force_nickchange(userrec* user,const char* newnick);
453 /* Configuration callbacks */
454 bool InitTypes(const char* tag);
455 bool InitClasses(const char* tag);
456 bool DoType(const char* tag, char** entries, void** values, int* types);
457 bool DoClass(const char* tag, char** entries, void** values, int* types);
458 bool DoneClassesAndTypes(const char* tag);
460 long FindMatchingGlobal(userrec* user);
461 long FindMatchingLocal(userrec* user);