]> git.netwichtig.de Git - user/henk/code/inspircd.git/blobdiff - src/modules/m_chanhistory.cpp
Merge pull request #1162 from SaberUK/insp20+fix-deinstall
[user/henk/code/inspircd.git] / src / modules / m_chanhistory.cpp
index d987fee1e5e4bbf22373c655587b01c55d654203..e48e67fe5557ffb601425de6dde5ceba787e3b7b 100644 (file)
@@ -1,16 +1,22 @@
-/*       +------------------------------------+
- *       | 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) 2009-2010 Daniel De Graaf <danieldg@inspircd.org>
  *
- * 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"
 
 /* $ModDesc: Provides channel history for a given number of lines */
@@ -31,8 +37,23 @@ struct HistoryList
 
 class HistoryMode : public ModeHandler
 {
+       bool IsValidDuration(const std::string& duration)
+       {
+               for (std::string::const_iterator i = duration.begin(); i != duration.end(); ++i)
+               {
+                       unsigned char c = *i;
+                       if (((c >= '0') && (c <= '9')) || (c == 's') || (c == 'S'))
+                               continue;
+
+                       if (duration_multi[c] == 1)
+                               return false;
+               }
+               return true;
+       }
+
  public:
        SimpleExtItem<HistoryList> ext;
+       unsigned int maxlines;
        HistoryMode(Module* Creator) : ModeHandler(Creator, "history", 'H', PARAM_SETONLY, MODETYPE_CHANNEL),
                ext("history", Creator) { }
 
@@ -43,15 +64,42 @@ class HistoryMode : public ModeHandler
                        std::string::size_type colon = parameter.find(':');
                        if (colon == std::string::npos)
                                return MODEACTION_DENY;
-                       int len = atoi(parameter.substr(0, colon).c_str());
-                       int time = ServerInstance->Duration(parameter.substr(colon+1));
-                       if (len <= 0 || time < 0 || len > 50)
+
+                       std::string duration = parameter.substr(colon+1);
+                       if ((IS_LOCAL(source)) && ((duration.length() > 10) || (!IsValidDuration(duration))))
+                               return MODEACTION_DENY;
+
+                       unsigned int len = ConvToInt(parameter.substr(0, colon));
+                       int time = ServerInstance->Duration(duration);
+                       if (len == 0 || time < 0)
+                               return MODEACTION_DENY;
+                       if (len > maxlines && IS_LOCAL(source))
                                return MODEACTION_DENY;
-                       ext.set(channel, new HistoryList(len, time));
+                       if (len > maxlines)
+                               len = maxlines;
+                       if (parameter == channel->GetModeParameter(this))
+                               return MODEACTION_DENY;
+
+                       HistoryList* history = ext.get(channel);
+                       if (history)
+                       {
+                               // Shrink the list if the new line number limit is lower than the old one
+                               if (len < history->lines.size())
+                                       history->lines.erase(history->lines.begin(), history->lines.begin() + (history->lines.size() - len));
+
+                               history->maxlen = len;
+                               history->maxtime = time;
+                       }
+                       else
+                       {
+                               ext.set(channel, new HistoryList(len, time));
+                       }
                        channel->SetModeParam('H', parameter);
                }
                else
                {
+                       if (!channel->IsModeSet('H'))
+                               return MODEACTION_DENY;
                        ext.unset(channel);
                        channel->SetModeParam('H', "");
                }
@@ -62,19 +110,27 @@ class HistoryMode : public ModeHandler
 class ModuleChanHistory : public Module
 {
        HistoryMode m;
+       bool sendnotice;
  public:
        ModuleChanHistory() : m(this)
        {
-               if (!ServerInstance->Modes->AddMode(&m))
-                       throw ModuleException("Could not add new modes!");
+       }
+
+       void init()
+       {
+               ServerInstance->Modules->AddService(m);
+               ServerInstance->Modules->AddService(m.ext);
 
-               Implementation eventlist[] = { I_OnUserJoin, I_OnUserMessage };
-               ServerInstance->Modules->Attach(eventlist, this, 2);
+               Implementation eventlist[] = { I_OnPostJoin, I_OnUserMessage, I_OnRehash };
+               ServerInstance->Modules->Attach(eventlist, this, sizeof(eventlist)/sizeof(Implementation));
+               OnRehash(NULL);
        }
 
-       ~ModuleChanHistory()
+       void OnRehash(User*)
        {
-               ServerInstance->Modes->DelMode(&m);
+               ConfigTag* tag = ServerInstance->Config->ConfValue("chanhistory");
+               m.maxlines = tag->getInt("maxlines", 50);
+               sendnotice = tag->getBool("notice", true);
        }
 
        void OnUserMessage(User* user,void* dest,int target_type, const std::string &text, char status, const CUList&)
@@ -95,16 +151,24 @@ class ModuleChanHistory : public Module
                }
        }
 
-       void OnUserJoin(Membership* memb, bool sync, bool created, CUList& except_list)
+       void OnPostJoin(Membership* memb)
        {
+               if (IS_REMOTE(memb->user))
+                       return;
+
                HistoryList* list = m.ext.get(memb->chan);
                if (!list)
                        return;
                time_t mintime = 0;
                if (list->maxtime)
                        mintime = ServerInstance->Time() - list->maxtime;
-               memb->user->WriteServ("NOTICE %s :Replaying up to %d lines of pre-join history spanning up to %d seconds",
-                       memb->chan->name.c_str(), list->maxlen, list->maxtime);
+
+               if (sendnotice)
+               {
+                       memb->user->WriteServ("NOTICE %s :Replaying up to %d lines of pre-join history spanning up to %d seconds",
+                               memb->chan->name.c_str(), list->maxlen, list->maxtime);
+               }
+
                for(std::deque<HistoryItem>::iterator i = list->lines.begin(); i != list->lines.end(); ++i)
                {
                        if (i->ts >= mintime)
@@ -114,7 +178,7 @@ class ModuleChanHistory : public Module
 
        Version GetVersion()
        {
-               return Version("Provides channel history replayed on join", VF_COMMON | VF_VENDOR);
+               return Version("Provides channel history replayed on join", VF_VENDOR);
        }
 };