]> git.netwichtig.de Git - user/henk/code/inspircd.git/blobdiff - src/modules/m_banredirect.cpp
Make classbase and refcountbase uncopyable; expand comments on their indended uses
[user/henk/code/inspircd.git] / src / modules / m_banredirect.cpp
index 1c8b47258807dd44aacbb619b8f3348d32db5932..cf6c278282509b2be1c6409330cce3c312cae26b 100644 (file)
@@ -3,7 +3,7 @@
  *       +------------------------------------+
  *
  *  InspIRCd: (C) 2002-2009 InspIRCd Development Team
- * See: http://www.inspircd.org/wiki/index.php/Credits
+ * See: http://wiki.inspircd.org/Credits
  *
  * This program is free but copyrighted software; see
  *            the file COPYING for details.
@@ -20,7 +20,7 @@
 /* Originally written by Om, January 2009
  */
 
-class BanRedirectEntry : public classbase
+class BanRedirectEntry
 {
  public:
        std::string targetchan;
@@ -37,15 +37,14 @@ typedef std::deque<std::string> StringDeque;
 
 class BanRedirect : public ModeWatcher
 {
- private:
-       InspIRCd* Srv;
  public:
-       BanRedirect(InspIRCd* Instance)
-       : ModeWatcher(Instance, 'b', MODETYPE_CHANNEL), Srv(Instance)
+       SimpleExtItem<BanRedirectList> extItem;
+       BanRedirect(Module* parent) : ModeWatcher(parent, 'b', MODETYPE_CHANNEL),
+               extItem("banredirect", parent)
        {
        }
 
-       bool BeforeMode(User* source, User* dest, Channel* channel, std::string &param, bool adding, ModeType type, bool)
+       bool BeforeMode(User* source, User* dest, Channel* channel, std::string &param, bool adding, ModeType type)
        {
                /* nick!ident@host -> nick!ident@host
                 * nick!ident@host#chan -> nick!ident@host#chan
@@ -118,64 +117,76 @@ class BanRedirect : public ModeWatcher
 
                        if(mask[CHAN].length())
                        {
-                               if(!IS_LOCAL(source) || Srv->IsChannel(mask[CHAN].c_str(), ServerInstance->Config->Limits.ChanMax))
+                               if (IS_LOCAL(source))
                                {
+                                       if (!ServerInstance->IsChannel(mask[CHAN].c_str(),  ServerInstance->Config->Limits.ChanMax))
+                                       {
+                                               source->WriteNumeric(403, "%s %s :Invalid channel name in redirection (%s)", source->nick.c_str(), channel->name.c_str(), mask[CHAN].c_str());
+                                               return false;
+                                       }
+
+                                       Channel *c = ServerInstance->FindChan(mask[CHAN].c_str());
+                                       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)
+                                       {
+                                               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;
+                                       }
+
                                        if (assign(channel->name) == mask[CHAN])
                                        {
                                                source->WriteNumeric(690, "%s %s :You cannot set a ban redirection to the channel the ban is on", source->nick.c_str(), channel->name.c_str());
                                                return false;
                                        }
-                                       else
+                               }
+
+                               if(adding)
+                               {
+                                       /* It's a properly valid redirecting ban, and we're adding it */
+                                       redirects = extItem.get(channel);
+                                       if (!redirects)
                                        {
-                                               if(adding)
-                                               {
-                                                       /* It's a properly valid redirecting ban, and we're adding it */
-                                                       if(!channel->GetExt("banredirects", redirects))
-                                                       {
-                                                               redirects = new BanRedirectList;
-                                                               channel->Extend("banredirects", redirects);
-                                                       }
+                                               redirects = new BanRedirectList;
+                                               extItem.set(channel, redirects);
+                                       }
 
-                                                       /* Here 'param' doesn't have the channel on it yet */
-                                                       redirects->push_back(BanRedirectEntry(mask[CHAN].c_str(), param.c_str()));
+                                       /* Here 'param' doesn't have the channel on it yet */
+                                       redirects->push_back(BanRedirectEntry(mask[CHAN].c_str(), param.c_str()));
 
-                                                       /* Now it does */
-                                                       param.append(mask[CHAN]);
-                                               }
-                                               else
+                                       /* Now it does */
+                                       param.append(mask[CHAN]);
+                               }
+                               else
+                               {
+                                       /* Removing a ban, if there's no extensible there are no redirecting bans and we're fine. */
+                                       redirects = extItem.get(channel);
+                                       if (redirects)
+                                       {
+                                               /* But there were, so we need to remove the matching one if there is one */
+
+                                               for(BanRedirectList::iterator redir = redirects->begin(); redir != redirects->end(); redir++)
                                                {
-                                                       /* Removing a ban, if there's no extensible there are no redirecting bans and we're fine. */
-                                                       if(channel->GetExt("banredirects", redirects))
+                                                       /* Ugly as fuck */
+                                                       if((irc::string(redir->targetchan.c_str()) == irc::string(mask[CHAN].c_str())) && (irc::string(redir->banmask.c_str()) == irc::string(param.c_str())))
                                                        {
-                                                               /* But there were, so we need to remove the matching one if there is one */
+                                                               redirects->erase(redir);
 
-                                                               for(BanRedirectList::iterator redir = redirects->begin(); redir != redirects->end(); redir++)
+                                                               if(redirects->empty())
                                                                {
-                                                                       /* Ugly as fuck */
-                                                                       if((irc::string(redir->targetchan.c_str()) == irc::string(mask[CHAN].c_str())) && (irc::string(redir->banmask.c_str()) == irc::string(param.c_str())))
-                                                                       {
-                                                                               redirects->erase(redir);
-
-                                                                               if(redirects->empty())
-                                                                               {
-                                                                                       delete redirects;
-                                                                                       channel->Shrink("banredirects");
-                                                                               }
-
-                                                                               break;
-                                                                       }
+                                                                       extItem.unset(channel);
                                                                }
-                                                       }
 
-                                                       /* Append the channel so the default +b handler can remove the entry too */
-                                                       param.append(mask[CHAN]);
+                                                               break;
+                                                       }
                                                }
                                        }
-                               }
-                               else
-                               {
-                                       source->WriteNumeric(403, "%s %s :Invalid channel name in redirection (%s)", source->nick.c_str(), channel->name.c_str(), mask[CHAN].c_str());
-                                       return false;
+
+                                       /* Append the channel so the default +b handler can remove the entry too */
+                                       param.append(mask[CHAN]);
                                }
                        }
                }
@@ -186,28 +197,24 @@ class BanRedirect : public ModeWatcher
 
 class ModuleBanRedirect : public Module
 {
-       BanRedirect* re;
+       BanRedirect re;
        bool nofollow;
        Module* ExceptionModule;
 
  public:
-       ModuleBanRedirect(InspIRCd* Me)
-       : Module(Me)
+       ModuleBanRedirect()
+       : re(this)
        {
-               re = new BanRedirect(Me);
                nofollow = false;
 
-               if(!ServerInstance->Modes->AddModeWatcher(re))
-               {
-                       delete re;
+               if(!ServerInstance->Modes->AddModeWatcher(&re))
                        throw ModuleException("Could not add mode watcher");
-               }
 
-               OnRehash(NULL, "");
-
-               Implementation list[] = { I_OnRehash, I_OnUserPreJoin, I_OnChannelDelete, I_OnCleanup };
-               Me->Modules->Attach(list, this, 4);
+               OnRehash(NULL);
 
+               ServerInstance->Extensions.Register(&re.extItem);
+               Implementation list[] = { I_OnRehash, I_OnUserPreJoin, I_OnChannelDelete };
+               ServerInstance->Modules->Attach(list, this, 3);
        }
 
        virtual void OnChannelDelete(Channel* chan)
@@ -220,11 +227,11 @@ class ModuleBanRedirect : public Module
                if(target_type == TYPE_CHANNEL)
                {
                        Channel* chan = static_cast<Channel*>(item);
-                       BanRedirectList* redirects;
+                       BanRedirectList* redirects = re.extItem.get(chan);
 
-                       if(chan->GetExt("banredirects", redirects))
+                       if(redirects)
                        {
-                               irc::modestacker modestack(ServerInstance, false);
+                               irc::modestacker modestack(false);
                                StringDeque stackresult;
                                std::vector<std::string> mode_junk;
                                mode_junk.push_back(chan->name);
@@ -242,39 +249,33 @@ class ModuleBanRedirect : public Module
 
                                while(modestack.GetStackedLine(stackresult))
                                {
-                                       for(StringDeque::size_type i = 0; i < stackresult.size(); i++)
-                                       {
-                                               mode_junk.push_back(stackresult[i]);
-                                       }
-
+                                       mode_junk.insert(mode_junk.end(), stackresult.begin(), stackresult.end());
                                        ServerInstance->SendMode(mode_junk, ServerInstance->FakeClient);
+                                       mode_junk.erase(mode_junk.begin() + 1, mode_junk.end());
                                }
-
-                               delete redirects;
-                               chan->Shrink("banredirects");
                        }
                }
        }
 
-       virtual void OnRehash(User* user, const std::string &param)
+       virtual void OnRehash(User* user)
        {
                ExceptionModule = ServerInstance->Modules->Find("m_banexception.so");
        }
 
-       virtual int OnUserPreJoin(User* user, Channel* chan, const char* cname, std::string &privs, const std::string &keygiven)
+       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 0;
+                       return MOD_RES_PASSTHRU;
 
                /* Return 1 to prevent the join, 0 to allow it */
                if (chan)
                {
-                       BanRedirectList* redirects;
+                       BanRedirectList* redirects = re.extItem.get(chan);
 
-                       if(chan->GetExt("banredirects", redirects))
+                       if (redirects)
                        {
                                /* We actually had some ban redirects to check */
 
@@ -282,12 +283,12 @@ 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 0;
+                                       // they have a ban exception
+                                       return MOD_RES_PASSTHRU;
                                }
 
                                std::string ipmask(user->nick);
@@ -307,33 +308,31 @@ 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 1;
+                                                       return MOD_RES_ALLOW;
                                                }
                                                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());
                                                        nofollow = true;
-                                                       Channel::JoinUser(ServerInstance, user, redir->targetchan.c_str(), false, "", false, ServerInstance->Time());
+                                                       Channel::JoinUser(user, redir->targetchan.c_str(), false, "", false, ServerInstance->Time());
                                                        nofollow = false;
-                                                       return 1;
+                                                       return MOD_RES_ALLOW;
                                                }
                                        }
                                }
                        }
                }
-               return 0;
+               return MOD_RES_PASSTHRU;
        }
 
        virtual ~ModuleBanRedirect()
        {
-               ServerInstance->Modes->DelModeWatcher(re);
-               delete re;
        }
 
        virtual Version GetVersion()
        {
-               return Version("$Id$", VF_COMMON|VF_VENDOR, API_VERSION);
+               return Version("Allows an extended ban (+b) syntax redirecting banned users to another channel", VF_COMMON|VF_VENDOR);
        }
 
        void Prioritize()