]> git.netwichtig.de Git - user/henk/code/inspircd.git/blobdiff - src/channels.cpp
Remove an extern, partly because it's unused, partly because it then gets shadowed...
[user/henk/code/inspircd.git] / src / channels.cpp
index f6658db95e232139741018e55a3c30523153ec2c..dc42ea651e71035f8fd63cd56bd38a8f734b7df1 100644 (file)
-#include "inspircd_config.h" 
-#include "channels.h"
-#include "inspircd.h"
-#include <stdio.h>
+/*   +------------------------------------+
+ *   | Inspire Internet Relay Chat Daemon |
+ *   +------------------------------------+
+ *
+ *  InspIRCd is copyright (C) 2002-2006 ChatSpike-Dev.
+ *   E-mail:
+ *       <brain@chatspike.net>
+ *       <Craig@chatspike.net>
+ * 
+ * Written by Craig Edwards, Craig McLure, and others.
+ * This program is free but copyrighted software; see
+ *     the file COPYING for details.
+ *
+ * ---------------------------------------------------
+ */
+
+using namespace std;
+
 #include <string>
+#include <map>
+#include <sstream>
+#include <vector>
+#include <deque>
+#include "configreader.h"
+#include "inspircd.h"
+#include "hash_map.h"
+#include "users.h"
+#include "ctables.h"
+#include "globals.h"
+#include "modules.h"
+#include "dynamic.h"
+#include "commands.h"
+#include "wildcard.h"
+#include "message.h"
+#include "mode.h"
+#include "xline.h"
+#include "inspstring.h"
+#include "helperfuncs.h"
+#include "typedefs.h"
+
+extern ServerConfig* Config;
+
+extern int MODCOUNT;
+extern std::vector<Module*> modules;
+extern std::vector<ircd_module*> factory;
+extern time_t TIME;
+extern chan_hash chanlist;
+
+
+chanrec* ForceChan(chanrec* Ptr,ucrec *a,userrec* user, int created);
 
 chanrec::chanrec()
 {
-       strcpy(name,"");
-       strcpy(custom_modes,"");
-       strcpy(topic,"");
-       strcpy(setby,"");
-       strcpy(key,"");
+       *name = *topic = *setby = *key = 0;
        created = topicset = limit = 0;
-       topiclock = noexternal = inviteonly = moderated = secret = c_private = false;
+       internal_userlist.clear();
+       memset(&modes,0,64);
 }
 
 void chanrec::SetCustomMode(char mode,bool mode_on)
 {
-       if (mode_on) {
-               char m[3];
-               m[0] = mode;
-               m[1] = '\0';
-               if (!strchr(this->custom_modes,mode))
+       modes[mode-65] = mode_on;
+       if (!mode_on)
+               this->SetCustomModeParam(mode,"",false);
+}
+
+
+void chanrec::SetCustomModeParam(char mode,char* parameter,bool mode_on)
+{
+       log(DEBUG,"SetCustomModeParam called");
+       
+       CustomModeList::iterator n = custom_mode_params.find(mode);     
+
+       if (mode_on)
+       {
+               if (n == custom_mode_params.end())
                {
-                       strncat(custom_modes,m,MAXMODES);
+                       custom_mode_params[mode] = strdup(parameter);
+                       log(DEBUG,"Custom mode parameter %c %s added",mode,parameter);
+               }
+               else
+               {
+                       log(DEBUG, "Tried to set custom mode parameter for %c '%s' when it was already '%s'", mode, parameter, n->second);
                }
-               log(DEBUG,"Custom mode %c set",mode);
        }
-       else {
-               char temp[MAXMODES];
-               int count = 0;
-               for (int q = 0; q < strlen(custom_modes); q++) {
-                       if (custom_modes[q] != mode) {
-                               temp[count++] = mode;
-                       }
+       else
+       {
+               if (n != custom_mode_params.end())
+               {
+                       free(n->second);
+                       custom_mode_params.erase(n);
                }
-               temp[count] = '\0';
-               strncpy(custom_modes,temp,MAXMODES);
-               log(DEBUG,"Custom mode %c removed",mode);
        }
 }
 
-vector<ModeParameter> custom_mode_params;
+bool chanrec::IsModeSet(char mode)
+{
+       return modes[mode-65];
+}
 
-void chanrec::SetCustomModeParam(char mode,char* parameter,bool mode_on)
+std::string chanrec::GetModeParameter(char mode)
+{
+       if (mode == 'k')
+       {
+               return this->key;
+       }
+       else if (mode == 'l')
+       {
+               return ConvToStr(this->limit);
+       }
+       else
+       {
+               CustomModeList::iterator n = custom_mode_params.find(mode);
+               if (n != custom_mode_params.end())
+               {
+                       return n->second;
+               }
+               return "";
+       }
+}
+
+long chanrec::GetUserCounter()
 {
+       return (this->internal_userlist.size());
+}
 
-       log(DEBUG,"SetCustomModeParam called");
-       ModeParameter M;
-       M.mode = mode;
-       strcpy(M.channel,this->name);
-       strcpy(M.parameter,parameter);
-       if (mode_on)
+void chanrec::AddUser(userrec* user)
+{
+       internal_userlist[user] = user;
+}
+
+unsigned long chanrec::DelUser(userrec* user)
+{
+       CUListIter a = internal_userlist.find(user);
+       
+       if (a != internal_userlist.end())
        {
-               log(DEBUG,"Custom mode parameter %c %s added",mode,parameter);
-               custom_mode_params.push_back(M);
+               internal_userlist.erase(a);
+               /* And tidy any others... */
+               DelOppedUser(user);
+               DelHalfoppedUser(user);
+               DelVoicedUser(user);
+       }
+       
+       return internal_userlist.size();
+}
+
+bool chanrec::HasUser(userrec* user)
+{
+       return (internal_userlist.find(user) != internal_userlist.end());
+}
+
+void chanrec::AddOppedUser(userrec* user)
+{
+       internal_op_userlist[user] = user;
+}
+
+void chanrec::DelOppedUser(userrec* user)
+{
+       CUListIter a = internal_op_userlist.find(user);
+       if (a != internal_op_userlist.end())
+       {
+               internal_op_userlist.erase(a);
+               return;
+       }
+}
+
+void chanrec::AddHalfoppedUser(userrec* user)
+{
+       internal_halfop_userlist[user] = user;
+}
+
+void chanrec::DelHalfoppedUser(userrec* user)
+{
+       CUListIter a = internal_halfop_userlist.find(user);
+
+       if (a != internal_halfop_userlist.end())
+       {   
+               internal_halfop_userlist.erase(a);
+       }
+}
+
+void chanrec::AddVoicedUser(userrec* user)
+{
+       internal_voice_userlist[user] = user;
+}
+
+void chanrec::DelVoicedUser(userrec* user)
+{
+       CUListIter a = internal_voice_userlist.find(user);
+       
+       if (a != internal_voice_userlist.end())
+       {
+               internal_voice_userlist.erase(a);
+       }
+}
+
+CUList* chanrec::GetUsers()
+{
+       return &internal_userlist;
+}
+
+CUList* chanrec::GetOppedUsers()
+{
+       return &internal_op_userlist;
+}
+
+CUList* chanrec::GetHalfoppedUsers()
+{
+       return &internal_halfop_userlist;
+}
+
+CUList* chanrec::GetVoicedUsers()
+{
+       return &internal_voice_userlist;
+}
+
+/* 
+ * add a channel to a user, creating the record for it if needed and linking
+ * it to the user record 
+ */
+
+chanrec* add_channel(userrec *user, const char* cn, const char* key, bool override)
+{
+       if ((!user) || (!cn))
+       {
+               log(DEFAULT,"*** BUG *** add_channel was given an invalid parameter");
+               return 0;
+       }
+
+       int created = 0;
+       char cname[MAXBUF];
+       int MOD_RESULT = 0;
+       strlcpy(cname,cn,CHANMAX);
+       log(DEBUG,"cname='%s' cn='%s'",cname,cn);
+
+       log(DEBUG,"add_channel: %s %s",user->nick,cname);
+
+       chanrec* Ptr = FindChan(cname);
+
+       if (!Ptr)
+       {
+               if (user->fd > -1)
+               {
+                       MOD_RESULT = 0;
+                       FOREACH_RESULT(I_OnUserPreJoin,OnUserPreJoin(user,NULL,cname));
+                       if (MOD_RESULT == 1)
+                               return NULL;
+               }
+
+               /* create a new one */
+               chanlist[cname] = new chanrec();
+               strlcpy(chanlist[cname]->name, cname,CHANMAX);
+               chanlist[cname]->modes[CM_TOPICLOCK] = chanlist[cname]->modes[CM_NOEXTERNAL] = 1;
+               //chanlist[cname]->binarymodes = CM_TOPICLOCK | CM_NOEXTERNAL;
+               chanlist[cname]->created = TIME;
+               *chanlist[cname]->topic = 0;
+               strlcpy(chanlist[cname]->setby, user->nick,NICKMAX-1);
+               chanlist[cname]->topicset = 0;
+               Ptr = chanlist[cname];
+               log(DEBUG,"add_channel: created: %s",cname);
+               /*
+                * set created to 2 to indicate user
+                * is the first in the channel
+                * and should be given ops
+                */
+               created = 2;
        }
        else
        {
-               if (custom_mode_params.size())
+               /* Already on the channel */
+               if (Ptr->HasUser(user))
+                       return NULL;
+
+               /*
+                * remote users are allowed us to bypass channel modes
+                * and bans (used by servers)
+                */
+               if (IS_LOCAL(user)) /* was a check on fd > -1 */
                {
-                       for (vector<ModeParameter>::iterator i = custom_mode_params.begin(); i < custom_mode_params.end(); i++)
+                       MOD_RESULT = 0;
+                       FOREACH_RESULT(I_OnUserPreJoin,OnUserPreJoin(user,Ptr,cname));
+                       if (MOD_RESULT == 1)
                        {
-                               if ((i->mode == mode) && (!strcasecmp(this->name,i->channel)))
+                               return NULL;
+                       }
+                       else if (MOD_RESULT == 0)
+                       {
+                               if (*Ptr->key)
                                {
-                                       log(DEBUG,"Custom mode parameter %c %s removed",mode,parameter);
-                                       custom_mode_params.erase(i);
-                                       return;
+                                       MOD_RESULT = 0;
+                                       FOREACH_RESULT(I_OnCheckKey,OnCheckKey(user, Ptr, key ? key : ""));
+                                       if (!MOD_RESULT)
+                                       {
+                                               if (!key)
+                                               {
+                                                       log(DEBUG,"add_channel: no key given in JOIN");
+                                                       WriteServ(user->fd,"475 %s %s :Cannot join channel (Requires key)",user->nick, Ptr->name);
+                                                       return NULL;
+                                               }
+                                               else
+                                               {
+                                                       if (strcmp(key,Ptr->key))
+                                                       {
+                                                               log(DEBUG,"add_channel: bad key given in JOIN");
+                                                               WriteServ(user->fd,"475 %s %s :Cannot join channel (Incorrect key)",user->nick, Ptr->name);
+                                                               return NULL;
+                                                       }
+                                               }
+                                       }
+                               }
+                               if (Ptr->modes[CM_INVITEONLY])
+                               {
+                                       MOD_RESULT = 0;
+                                       irc::string xname(Ptr->name);
+                                       FOREACH_RESULT(I_OnCheckInvite,OnCheckInvite(user, Ptr));
+                                       if (!MOD_RESULT)
+                                       {
+                                               log(DEBUG,"add_channel: channel is +i");
+                                               if (user->IsInvited(xname))
+                                               {
+                                                       /* user was invited to channel */
+                                                       /* there may be an optional channel NOTICE here */
+                                               }
+                                               else
+                                               {
+                                                       WriteServ(user->fd,"473 %s %s :Cannot join channel (Invite only)",user->nick, Ptr->name);
+                                                       return NULL;
+                                               }
+                                       }
+                                       user->RemoveInvite(xname);
+                               }
+                               if (Ptr->limit)
+                               {
+                                       MOD_RESULT = 0;
+                                       FOREACH_RESULT(I_OnCheckLimit,OnCheckLimit(user, Ptr));
+                                       if (!MOD_RESULT)
+                                       {
+                                               if (usercount(Ptr) >= Ptr->limit)
+                                               {
+                                                       WriteServ(user->fd,"471 %s %s :Cannot join channel (Channel is full)",user->nick, Ptr->name);
+                                                       return NULL;
+                                               }
+                                       }
+                               }
+                               if (Ptr->bans.size())
+                               {
+                                       log(DEBUG,"add_channel: about to walk banlist");
+                                       MOD_RESULT = 0;
+                                       FOREACH_RESULT(I_OnCheckBan,OnCheckBan(user, Ptr));
+                                       if (!MOD_RESULT)
+                                       {
+                                               for (BanList::iterator i = Ptr->bans.begin(); i != Ptr->bans.end(); i++)
+                                               {
+                                                       if ((match(user->GetFullHost(),i->data)) || (match(user->GetFullRealHost(),i->data)) || (match((char*)inet_ntoa(user->ip4),i->data)))
+                                                       {
+                                                               WriteServ(user->fd,"474 %s %s :Cannot join channel (You're banned)",user->nick, Ptr->name);
+                                                               return NULL;
+                                                       }
+                                               }
+                                       }
                                }
                        }
                }
-               log(DEBUG,"*** BUG *** Attempt to remove non-existent mode parameter!");
+               else
+               {
+                       log(DEBUG,"Overridden checks");
+               }
+               created = 1;
+       }
+
+       log(DEBUG,"Passed channel checks");
+
+       for (UserChanList::const_iterator index = user->chans.begin(); index != user->chans.end(); index++)
+       {
+               if ((*index)->channel == NULL)
+               {
+                       return ForceChan(Ptr, *index, user, created);
+               }
+       }
+
+       /*
+        * XXX: If the user is an oper here, we can just extend their user->chans vector by one
+        * and put the channel in here. Same for remote users which are not bound by
+        * the channel limits. Otherwise, nope, youre boned.
+        */
+       if (!IS_LOCAL(user)) /* was a check on fd < 0 */
+       {
+               ucrec* a = new ucrec();
+               chanrec* c = ForceChan(Ptr,a,user,created);
+               user->chans.push_back(a);
+               return c;
+       }
+       else if (*user->oper)
+       {
+               /* Oper allows extension up to the OPERMAXCHANS value */
+               if (user->chans.size() < OPERMAXCHANS)
+               {
+                       ucrec* a = new ucrec();
+                       chanrec* c = ForceChan(Ptr,a,user,created);
+                       user->chans.push_back(a);
+                       return c;
+               }
        }
+
+       log(DEBUG,"add_channel: user channel max exceeded: %s %s",user->nick,cname);
+       WriteServ(user->fd,"405 %s %s :You are on too many channels",user->nick, cname);
+
+       if (created == 2)
+       {
+               log(DEBUG,"BLAMMO, Whacking channel.");
+               /* Things went seriously pear shaped, so take this away. bwahaha. */
+               chan_hash::iterator n = chanlist.find(cname);
+               if (n != chanlist.end())
+               {
+                       Ptr->DelUser(user);
+                       delete Ptr;
+                       chanlist.erase(n);
+                       for (unsigned int index =0; index < user->chans.size(); index++)
+                       {
+                               if (user->chans[index]->channel == Ptr)
+                               {
+                                       user->chans[index]->channel = NULL;
+                                       user->chans[index]->uc_modes = 0;       
+                               }
+                       }
+               }
+       }
+       return NULL;
 }
 
-bool chanrec::IsCustomModeSet(char mode)
+chanrec* ForceChan(chanrec* Ptr,ucrec *a,userrec* user, int created)
 {
-       log(DEBUG,"Checking ISCustomModeSet: %c %s",mode,this->custom_modes);
-       return (strchr(this->custom_modes,mode) != 0);
+       if (created == 2)
+       {
+               /* first user in is given ops */
+               a->uc_modes = UCMODE_OP;
+               Ptr->AddOppedUser(user);
+       }
+       else
+       {
+               a->uc_modes = 0;
+       }
+
+       a->channel = Ptr;
+       Ptr->AddUser(user);
+       WriteChannel(Ptr,user,"JOIN :%s",Ptr->name);
+
+       /* Major improvement by Brain - we dont need to be calculating all this pointlessly for remote users */
+       if (IS_LOCAL(user))
+       {
+               log(DEBUG,"Sent JOIN to client");
+               if (Ptr->topicset)
+               {
+                       WriteServ(user->fd,"332 %s %s :%s", user->nick, Ptr->name, Ptr->topic);
+                       WriteServ(user->fd,"333 %s %s %s %lu", user->nick, Ptr->name, Ptr->setby, (unsigned long)Ptr->topicset);
+               }
+               userlist(user,Ptr);
+               WriteServ(user->fd,"366 %s %s :End of /NAMES list.", user->nick, Ptr->name);
+       }
+       FOREACH_MOD(I_OnUserJoin,OnUserJoin(user,Ptr));
+       return Ptr;
 }
 
-std::string chanrec::GetModeParameter(char mode)
+/*
+ *remove a channel from a users record, and remove the record from memory
+ * if the channel has become empty
+ */
+
+chanrec* del_channel(userrec *user, const char* cname, const char* reason, bool local)
+{
+       if ((!user) || (!cname))
+       {
+               log(DEFAULT,"*** BUG *** del_channel was given an invalid parameter");
+               return NULL;
+       }
+
+       chanrec* Ptr = FindChan(cname);
+
+       if (!Ptr)
+               return NULL;
+
+       log(DEBUG,"del_channel: removing: %s %s",user->nick,Ptr->name);
+
+       for (unsigned int i =0; i < user->chans.size(); i++)
+       {
+               /* zap it from the channel list of the user */
+               if (user->chans[i]->channel == Ptr)
+               {
+                       if (reason)
+                       {
+                               FOREACH_MOD(I_OnUserPart,OnUserPart(user,Ptr,reason));
+                               WriteChannel(Ptr,user,"PART %s :%s",Ptr->name, reason);
+                       }
+                       else
+                       {
+                               FOREACH_MOD(I_OnUserPart,OnUserPart(user,Ptr,""));
+                               WriteChannel(Ptr,user,"PART :%s",Ptr->name);
+                       }
+                       user->chans[i]->uc_modes = 0;
+                       user->chans[i]->channel = NULL;
+                       log(DEBUG,"del_channel: unlinked: %s %s",user->nick,Ptr->name);
+                       break;
+               }
+       }
+
+       Ptr->DelUser(user);
+
+       /* if there are no users left on the channel */
+       if (!usercount(Ptr))
+       {
+               chan_hash::iterator iter = chanlist.find(Ptr->name);
+
+               log(DEBUG,"del_channel: destroying channel: %s",Ptr->name);
+
+               /* kill the record */
+               if (iter != chanlist.end())
+               {
+                       log(DEBUG,"del_channel: destroyed: %s",Ptr->name);
+                       FOREACH_MOD(I_OnChannelDelete,OnChannelDelete(Ptr));
+                       delete Ptr;
+                       chanlist.erase(iter);
+               }
+       }
+
+       return NULL;
+}
+
+void server_kick_channel(userrec* user, chanrec* Ptr, char* reason, bool triggerevents)
 {
-       if (custom_mode_params.size())
+       if ((!user) || (!Ptr) || (!reason))
+       {
+               return;
+       }
+
+       if (IS_LOCAL(user))
+       {
+               if (!Ptr->HasUser(user))
+               {
+                       /* Not on channel */
+                       return;
+               }
+       }
+       
+       if (triggerevents)
+       {
+               FOREACH_MOD(I_OnUserKick,OnUserKick(NULL,user,Ptr,reason));
+       }
+
+       for (unsigned int i =0; i < user->chans.size(); i++)
+       {
+               if ((user->chans[i]->channel) && (user->chans[i]->channel == Ptr))
+               {
+                       WriteChannelWithServ(Config->ServerName,Ptr,"KICK %s %s :%s",Ptr->name, user->nick, reason);
+                       user->chans[i]->uc_modes = 0;
+                       user->chans[i]->channel = NULL;
+                       break;
+               }
+       }
+
+       Ptr->DelUser(user);
+
+       if (!usercount(Ptr))
        {
-               for (vector<ModeParameter>::iterator i = custom_mode_params.begin(); i < custom_mode_params.end(); i++)
+               chan_hash::iterator iter = chanlist.find(Ptr->name);
+               log(DEBUG,"del_channel: destroying channel: %s",Ptr->name);
+               /* kill the record */
+               if (iter != chanlist.end())
                {
-                       if ((i->mode == mode) && (!strcasecmp(this->name,i->channel)))
+                       log(DEBUG,"del_channel: destroyed: %s",Ptr->name);
+                       FOREACH_MOD(I_OnChannelDelete,OnChannelDelete(Ptr));
+                       delete Ptr;
+                       chanlist.erase(iter);
+               }
+       }
+}
+
+void kick_channel(userrec *src,userrec *user, chanrec *Ptr, char* reason)
+{
+       if ((!src) || (!user) || (!Ptr) || (!reason))
+       {
+               log(DEFAULT,"*** BUG *** kick_channel was given an invalid parameter");
+               return;
+       }
+
+       log(DEBUG,"kick_channel: removing: %s %s %s",user->nick,Ptr->name,src->nick);
+
+       if (IS_LOCAL(src))
+       {
+               if (!Ptr->HasUser(user))
+               {
+                       WriteServ(src->fd,"441 %s %s %s :They are not on that channel",src->nick, user->nick, Ptr->name);
+                       return;
+               }
+               int MOD_RESULT = 0;
+
+               if (!is_uline(src->server))
+               {
+                       MOD_RESULT = 0;
+                       FOREACH_RESULT(I_OnUserPreKick,OnUserPreKick(src,user,Ptr,reason));
+                       if (MOD_RESULT == 1)
+                               return;
+               }
+               /* Set to -1 by OnUserPreKick if explicit allow was set */
+               if (MOD_RESULT != -1)
+               {
+                       FOREACH_RESULT(I_OnAccessCheck,OnAccessCheck(src,user,Ptr,AC_KICK));
+                       if ((MOD_RESULT == ACR_DENY) && (!is_uline(src->server)))
+                               return;
+       
+                       if ((MOD_RESULT == ACR_DEFAULT) || (!is_uline(src->server)))
                        {
-                               return std::string(i->parameter);
+                               if ((cstatus(src,Ptr) < STATUS_HOP) || (cstatus(src,Ptr) < cstatus(user,Ptr)))
+                               {
+                                       if (cstatus(src,Ptr) == STATUS_HOP)
+                                       {
+                                               WriteServ(src->fd,"482 %s %s :You must be a channel operator",src->nick, Ptr->name);
+                                       }
+                                       else
+                                       {
+                                               WriteServ(src->fd,"482 %s %s :You must be at least a half-operator",src->nick, Ptr->name);
+                                       }
+               
+                                       return;
+                               }
                        }
                }
        }
-       return std::string("");
+
+       FOREACH_MOD(I_OnUserKick,OnUserKick(src,user,Ptr,reason));
+                       
+       for (UserChanList::const_iterator i = user->chans.begin(); i != user->chans.end(); i++)
+       {
+               /* zap it from the channel list of the user */
+               if ((*i)->channel && ((*i)->channel == Ptr))
+               {
+                       WriteChannel(Ptr,src,"KICK %s %s :%s",Ptr->name, user->nick, reason);
+                       (*i)->uc_modes = 0;
+                       (*i)->channel = NULL;
+                       log(DEBUG,"del_channel: unlinked: %s %s",user->nick,Ptr->name);
+                       break;
+               }
+       }
+
+       if (!Ptr->DelUser(user))
+       /* if there are no users left on the channel */
+       {
+               chan_hash::iterator iter = chanlist.find(Ptr->name);
+
+               log(DEBUG,"del_channel: destroying channel: %s",Ptr->name);
+
+               /* kill the record */
+               if (iter != chanlist.end())
+               {
+                       log(DEBUG,"del_channel: destroyed: %s",Ptr->name);
+                       FOREACH_MOD(I_OnChannelDelete,OnChannelDelete(Ptr));
+                       delete Ptr;
+                       chanlist.erase(iter);
+               }
+       }
 }