]> git.netwichtig.de Git - user/henk/code/inspircd.git/blobdiff - src/modules/m_banredirect.cpp
Merge pull request #1162 from SaberUK/insp20+fix-deinstall
[user/henk/code/inspircd.git] / src / modules / m_banredirect.cpp
index 33cb4d87490d4632f2104a9d124d57574d91902d..1b9e361bf408dc12fd0697f354323388941a3545 100644 (file)
@@ -1,26 +1,36 @@
-/*       +------------------------------------+
- *       | Inspire Internet Relay Chat Daemon |
- *       +------------------------------------+
+/*
+ * InspIRCd -- Internet Relay Chat Daemon
  *
- *  InspIRCd: (C) 2002-2009 InspIRCd Development Team
- * See: http://wiki.inspircd.org/Credits
+ *   Copyright (C) 2009 Daniel De Graaf <danieldg@inspircd.org>
+ *   Copyright (C) 2007, 2009 Robin Burchell <robin+git@viroteck.net>
+ *   Copyright (C) 2008 Pippijn van Steenhoven <pip88nl@gmail.com>
+ *   Copyright (C) 2007 Dennis Friis <peavey@inspircd.org>
+ *   Copyright (C) 2007 Craig Edwards <craigedwards@brainbox.cc>
+ *   Copyright (C) 2007 Oliver Lupton <oliverlupton@gmail.com>
  *
- * This program is free but copyrighted software; see
- *            the file COPYING for details.
+ * This file is part of InspIRCd.  InspIRCd is free software: you can
+ * redistribute it and/or modify it under the terms of the GNU General Public
+ * License as published by the Free Software Foundation, version 2.
  *
- * ---------------------------------------------------
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+ * FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
+ * details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
+
 #include "inspircd.h"
 #include "u_listmode.h"
 
 /* $ModDesc: Allows an extended ban (+b) syntax redirecting banned users to another channel */
-/* $ModDep: ../../include/u_listmode.h */
 
 /* Originally written by Om, January 2009
  */
 
-class BanRedirectEntry : public classbase
+class BanRedirectEntry
 {
  public:
        std::string targetchan;
@@ -65,6 +75,9 @@ class BanRedirect : public ModeWatcher
                        if (param.length() >= 2 && param[1] == ':')
                                return true;
 
+                       if (param.find('#') == std::string::npos)
+                               return true;
+
                        if(adding && (channel->bans.size() > static_cast<unsigned>(maxbans)))
                        {
                                source->WriteNumeric(478, "%s %s :Channel ban list for %s is full (maximum entries for this channel is %ld)", source->nick.c_str(), channel->name.c_str(), channel->name.c_str(), maxbans);
@@ -86,9 +99,13 @@ class BanRedirect : public ModeWatcher
                                                start_pos = curr+1;
                                                break;
                                        case '#':
-                                               mask[current].assign(start_pos, curr);
-                                               current = CHAN;
-                                               start_pos = curr;
+                                               /* bug #921: don't barf when redirecting to ## channels */
+                                               if (current != CHAN)
+                                               {
+                                                       mask[current].assign(start_pos, curr);
+                                                       current = CHAN;
+                                                       start_pos = curr;
+                                               }
                                                break;
                                }
                        }
@@ -105,6 +122,14 @@ class BanRedirect : public ModeWatcher
                                mask[NICK].swap(mask[IDENT]);
                        }
 
+                       if (!mask[NICK].empty() && mask[IDENT].empty() && mask[HOST].empty())
+                       {
+                               if (mask[NICK].find('.') != std::string::npos || mask[NICK].find(':') != std::string::npos)
+                               {
+                                       mask[NICK].swap(mask[HOST]);
+                               }
+                       }
+
                        for(int i = 0; i < 3; i++)
                        {
                                if(mask[i].empty())
@@ -117,7 +142,7 @@ class BanRedirect : public ModeWatcher
 
                        if(mask[CHAN].length())
                        {
-                               if (IS_LOCAL(source))
+                               if (adding && IS_LOCAL(source))
                                {
                                        if (!ServerInstance->IsChannel(mask[CHAN].c_str(),  ServerInstance->Config->Limits.ChanMax))
                                        {
@@ -125,13 +150,13 @@ class BanRedirect : public ModeWatcher
                                                return false;
                                        }
 
-                                       Channel *c = ServerInstance->FindChan(mask[CHAN].c_str());
+                                       Channel *c = ServerInstance->FindChan(mask[CHAN]);
                                        if (!c)
                                        {
                                                source->WriteNumeric(690, "%s :Target channel %s must exist to be set as a redirect.",source->nick.c_str(),mask[CHAN].c_str());
                                                return false;
                                        }
-                                       else if (c->GetPrefixValue(source) < OP_VALUE)
+                                       else if (adding && c->GetPrefixValue(source) < OP_VALUE)
                                        {
                                                source->WriteNumeric(690, "%s :You must be opped on %s to set it as a redirect.",source->nick.c_str(), mask[CHAN].c_str());
                                                return false;
@@ -155,7 +180,7 @@ class BanRedirect : public ModeWatcher
                                        }
 
                                        /* Here 'param' doesn't have the channel on it yet */
-                                       redirects->push_back(BanRedirectEntry(mask[CHAN].c_str(), param.c_str()));
+                                       redirects->push_back(BanRedirectEntry(mask[CHAN], param));
 
                                        /* Now it does */
                                        param.append(mask[CHAN]);
@@ -199,27 +224,23 @@ class ModuleBanRedirect : public Module
 {
        BanRedirect re;
        bool nofollow;
-       Module* ExceptionModule;
 
  public:
        ModuleBanRedirect()
        : re(this)
        {
                nofollow = false;
+       }
+
 
+       void init()
+       {
                if(!ServerInstance->Modes->AddModeWatcher(&re))
                        throw ModuleException("Could not add mode watcher");
 
-               OnRehash(NULL);
-
-               Extensible::Register(&re.extItem);
-               Implementation list[] = { I_OnRehash, I_OnUserPreJoin, I_OnChannelDelete, I_OnCleanup };
-               ServerInstance->Modules->Attach(list, this, 4);
-       }
-
-       virtual void OnChannelDelete(Channel* chan)
-       {
-               OnCleanup(TYPE_CHANNEL, chan);
+               ServerInstance->Modules->AddService(re.extItem);
+               Implementation list[] = { I_OnUserPreJoin };
+               ServerInstance->Modules->Attach(list, this, sizeof(list)/sizeof(Implementation));
        }
 
        virtual void OnCleanup(int target_type, void* item)
@@ -257,20 +278,8 @@ class ModuleBanRedirect : public Module
                }
        }
 
-       virtual void OnRehash(User* user)
-       {
-               ExceptionModule = ServerInstance->Modules->Find("m_banexception.so");
-       }
-
        virtual ModResult OnUserPreJoin(User* user, Channel* chan, const char* cname, std::string &privs, const std::string &keygiven)
        {
-               /* This prevents recursion when a user sets multiple ban redirects in a chain
-                * (thanks Potter)
-                */
-               if (nofollow)
-                       return MOD_RES_PASSTHRU;
-
-               /* Return 1 to prevent the join, 0 to allow it */
                if (chan)
                {
                        BanRedirectList* redirects = re.extItem.get(chan);
@@ -283,12 +292,12 @@ class ModuleBanRedirect : public Module
                                 * Maybe we should have a GetFullIPHost() or something to match GetFullHost() and GetFullRealHost?
                                 */
 
-                               if (ExceptionModule)
+                               ModResult result;
+                               FIRST_MOD_RESULT(OnCheckChannelBan, result, (user, chan));
+                               if (result == MOD_RES_ALLOW)
                                {
-                                       ListModeRequest n(this, ExceptionModule, user, chan);
-                                       /* Users with ban exceptions are allowed to join without being redirected */
-                                       if (n.Send())
-                                               return MOD_RES_PASSTHRU;
+                                       // they have a ban exception
+                                       return MOD_RES_PASSTHRU;
                                }
 
                                std::string ipmask(user->nick);
@@ -298,6 +307,16 @@ class ModuleBanRedirect : public Module
                                {
                                        if(InspIRCd::Match(user->GetFullRealHost(), redir->banmask) || InspIRCd::Match(user->GetFullHost(), redir->banmask) || InspIRCd::MatchCIDR(ipmask, redir->banmask))
                                        {
+                                               /* This prevents recursion when a user sets multiple ban redirects in a chain
+                                                * (thanks Potter)
+                                                *
+                                                * If we're here and nofollow is true then we're already redirecting this user
+                                                * and there's a redirecting ban set on this channel that matches him, too.
+                                                * Deny both joins.
+                                                */
+                                               if (nofollow)
+                                                       return MOD_RES_DENY;
+
                                                /* tell them they're banned and are being transferred */
                                                Channel* destchan = ServerInstance->FindChan(redir->targetchan);
                                                std::string destlimit;
@@ -308,16 +327,16 @@ class ModuleBanRedirect : public Module
                                                if(destchan && ServerInstance->Modules->Find("m_redirect.so") && destchan->IsModeSet('L') && !destlimit.empty() && (destchan->GetUserCounter() >= atoi(destlimit.c_str())))
                                                {
                                                        user->WriteNumeric(474, "%s %s :Cannot join channel (You are banned)", user->nick.c_str(), chan->name.c_str());
-                                                       return MOD_RES_ALLOW;
+                                                       return MOD_RES_DENY;
                                                }
                                                else
                                                {
                                                        user->WriteNumeric(474, "%s %s :Cannot join channel (You are banned)", user->nick.c_str(), chan->name.c_str());
-                                                       user->WriteNumeric(470, "%s %s %s :You are banned from this channel, so you are automatically transfered to the redirected channel.", user->nick.c_str(), chan->name.c_str(), redir->targetchan.c_str());
+                                                       user->WriteNumeric(470, "%s %s %s :You are banned from this channel, so you are automatically transferred to the redirected channel.", user->nick.c_str(), chan->name.c_str(), redir->targetchan.c_str());
                                                        nofollow = true;
                                                        Channel::JoinUser(user, redir->targetchan.c_str(), false, "", false, ServerInstance->Time());
                                                        nofollow = false;
-                                                       return MOD_RES_ALLOW;
+                                                       return MOD_RES_DENY;
                                                }
                                        }
                                }
@@ -328,17 +347,14 @@ class ModuleBanRedirect : public Module
 
        virtual ~ModuleBanRedirect()
        {
+               /* XXX is this the best place to do this? */
+               if (!ServerInstance->Modes->DelModeWatcher(&re))
+                       ServerInstance->Logs->Log("m_banredirect.so", DEBUG, "Failed to delete modewatcher!");
        }
 
        virtual Version GetVersion()
        {
-               return Version("Allows an extended ban (+b) syntax redirecting banned users to another channel", VF_COMMON|VF_VENDOR, API_VERSION);
-       }
-
-       void Prioritize()
-       {
-               Module* banex = ServerInstance->Modules->Find("m_banexception.so");
-               ServerInstance->Modules->SetPriority(this, I_OnUserPreJoin, PRIORITY_BEFORE, &banex);
+               return Version("Allows an extended ban (+b) syntax redirecting banned users to another channel", VF_COMMON|VF_VENDOR);
        }
 };