summaryrefslogtreecommitdiff
path: root/src/modules
diff options
context:
space:
mode:
Diffstat (limited to 'src/modules')
-rw-r--r--src/modules/m_banredirect.cpp290
1 files changed, 290 insertions, 0 deletions
diff --git a/src/modules/m_banredirect.cpp b/src/modules/m_banredirect.cpp
new file mode 100644
index 000000000..8654e75f2
--- /dev/null
+++ b/src/modules/m_banredirect.cpp
@@ -0,0 +1,290 @@
+/* +------------------------------------+
+ * | Inspire Internet Relay Chat Daemon |
+ * +------------------------------------+
+ *
+ * InspIRCd: (C) 2002-2007 InspIRCd Development Team
+ * See: http://www.inspircd.org/wiki/index.php/Credits
+ *
+ * This program is free but copyrighted software; see
+ * the file COPYING for details.
+ *
+ * ---------------------------------------------------
+ */
+
+#include "mode.h"
+#include "users.h"
+#include "channels.h"
+#include "modules.h"
+#include "inspircd.h"
+
+/* $ModDesc: Allows an extended ban (+b) syntax redirecting banned users to another channel */
+
+class BanRedirectEntry
+{
+ public:
+ std::string targetchan;
+ std::string banmask;
+
+ BanRedirectEntry(const std::string &target = "", const std::string &mask = "")
+ : targetchan(target), banmask(mask)
+ {
+ }
+};
+
+typedef std::vector<BanRedirectEntry> BanRedirectList;
+
+class BanRedirect : public ModeWatcher
+{
+ private:
+ InspIRCd* Srv;
+ public:
+ BanRedirect(InspIRCd* Instance)
+ : ModeWatcher(Instance, 'b', MODETYPE_CHANNEL), Srv(Instance)
+ {
+ }
+
+ bool BeforeMode(userrec* source, userrec* dest, chanrec* channel, std::string &param, bool adding, ModeType type)
+ {
+ // Srv->Log(DEBUG, "BeforeMode(%s, %s, %s, %s, %s, %s)", ((source && source->nick) ? source->nick : "NULL"), ((dest && dest->nick) ? dest->nick : "NULL"), ((channel && channel->name) ? channel->name : "NULL"), param.c_str(), (adding ? "true" : "false"), ((type == MODETYPE_CHANNEL) ? "MODETYPE_CHANNEL" : "MODETYPE_USER"));
+
+ /* nick!ident@host -> nick!ident@host
+ * nick!ident@host#chan -> nick!ident@host#chan
+ * nick@host#chan -> nick!*@host#chan
+ * nick!ident#chan -> nick!ident@*#chan
+ * nick#chan -> nick!*@*#chan
+ */
+
+ if(channel && (type == MODETYPE_CHANNEL) && param.length())
+ {
+ BanRedirectList* redirects;
+
+ std::string mask[4];
+ enum { NICK, IDENT, HOST, CHAN } current = NICK;
+ std::string::iterator start_pos = param.begin();
+
+ for(std::string::iterator curr = start_pos; curr != param.end(); curr++)
+ {
+ switch(*curr)
+ {
+ case '!':
+ mask[current].assign(start_pos, curr);
+ current = IDENT;
+ start_pos = curr+1;
+ break;
+ case '@':
+ mask[current].assign(start_pos, curr);
+ current = HOST;
+ start_pos = curr+1;
+ break;
+ case '#':
+ mask[current].assign(start_pos, curr);
+ current = CHAN;
+ start_pos = curr;
+ break;
+ }
+ }
+
+ if(mask[current].empty())
+ {
+ mask[current].assign(start_pos, param.end());
+ }
+
+ for(int i = 0; i < 3; i++)
+ {
+ if(mask[i].empty())
+ {
+ mask[i].assign("*");
+ }
+ }
+
+ param.assign(mask[NICK]).append("!").append(mask[IDENT]).append("@").append(mask[HOST]);
+
+ Srv->Log(DEBUG, "mask[NICK] = '%s', mask[IDENT] = '%s', mask[HOST] = '%s', mask[CHAN] = '%s'", mask[NICK].c_str(), mask[IDENT].c_str(), mask[HOST].c_str(), mask[CHAN].c_str());
+
+ if(mask[CHAN].length())
+ {
+ if(Srv->IsChannel(mask[CHAN].c_str()))
+ {
+ if(irc::string(channel->name) == irc::string(mask[CHAN].c_str()))
+ {
+ source->WriteServ("690 %s %s :You cannot set a ban redirection to the channel the ban is on", source->nick, channel->name);
+ return false;
+ }
+ else
+ {
+ 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);
+ }
+
+ /* 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
+ {
+ /* Removing a ban, if there's no extensible there are no redirecting bans and we're fine. */
+ if(channel->GetExt("banredirects", 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++)
+ {
+ /* 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");
+ }
+
+ /* Append the channel so the default +b handler can remove the entry too */
+ param.append(mask[CHAN]);
+
+ break;
+ }
+ }
+ }
+ }
+ }
+ }
+ else
+ {
+ source->WriteServ("403 %s %s :Invalid channel name in redirection (%s)", source->nick, channel->name, mask[CHAN].c_str());
+ return false;
+ }
+ }
+
+ Srv->Log(DEBUG, "Changed param to: %s", param.c_str());
+ }
+
+ return true;
+ }
+};
+
+class ModuleBanRedirect : public Module
+{
+ BanRedirect* re;
+ InspIRCd* Srv;
+
+ public:
+ ModuleBanRedirect(InspIRCd* Me)
+ : Module::Module(Me), Srv(Me)
+ {
+ re = new BanRedirect(Me);
+
+ if(!Srv->AddModeWatcher(re))
+ throw ModuleException("Could not add mode watcher");
+ }
+
+ void Implements(char* List)
+ {
+ List[I_OnUserPreJoin] = List[I_OnChannelDelete] = List[I_OnCleanup] = 1;
+ }
+
+ virtual void OnChannelDelete(chanrec* chan)
+ {
+ OnCleanup(TYPE_CHANNEL, chan);
+ }
+
+ virtual void OnCleanup(int target_type, void* item)
+ {
+ if(target_type == TYPE_CHANNEL)
+ {
+ chanrec* chan = static_cast<chanrec*>(item);
+ BanRedirectList* redirects;
+
+ if(chan->GetExt("banredirects", redirects))
+ {
+ delete redirects;
+ chan->Shrink("banredirects");
+ }
+ }
+ }
+
+ virtual int OnUserPreJoin(userrec* user, chanrec* chan, const char* cname, std::string &privs)
+ {
+ /* Return 1 to prevent the join, 0 to allow it */
+ if (chan)
+ {
+ BanRedirectList* redirects;
+
+ if(chan->GetExt("banredirects", redirects))
+ {
+ /* We actually had some ban redirects to check */
+
+ std::string ipmask(user->nick);
+ ipmask.append('!', 1).append(user->ident).append('@', 1).append(user->GetIPString());
+
+ for(BanRedirectList::iterator redir = redirects->begin(); redir != redirects->end(); redir++)
+ {
+ if(Srv->MatchText(user->GetFullRealHost(), redir->banmask) || Srv->MatchText(user->GetFullHost(), redir->banmask) || Srv->MatchText(ipmask, redir->banmask))
+ {
+ /* tell them they're banned and are being transferred */
+ Srv->Log(DEBUG, "%s matches ban on %s -- might transferred to %s", user->nick, chan->name, redir->targetchan.c_str());
+
+ chanrec* destchan = Srv->FindChan(redir->targetchan);
+
+ if(destchan && Srv->FindModule("m_redirect.so") && destchan->IsModeSet('L') && destchan->limit && (destchan->GetUserCounter() >= destchan->limit))
+ {
+ user->WriteServ("474 %s %s :Cannot join channel (You are banned)", user->nick, chan->name);
+ return 1;
+ }
+ else
+ {
+ user->WriteServ("470 %s :You are banned from %s. You are being automatically redirected to %s", user->nick, chan->name, redir->targetchan.c_str());
+ chanrec::JoinUser(Srv, user, redir->targetchan.c_str(), false);
+ return 1;
+ }
+ }
+ }
+ }
+ }
+ return 0;
+ }
+
+ virtual ~ModuleBanRedirect()
+ {
+ Srv->Modes->DelModeWatcher(re);
+ DELETE(re);
+ }
+
+ virtual Version GetVersion()
+ {
+ return Version(1, 0, 0, 0, VF_COMMON | VF_VENDOR, API_VERSION);
+ }
+};
+
+
+class ModuleBanRedirectFactory : public ModuleFactory
+{
+ public:
+ ModuleBanRedirectFactory()
+ {
+ }
+
+ ~ModuleBanRedirectFactory()
+ {
+ }
+
+ virtual Module * CreateModule(InspIRCd* Me)
+ {
+ return new ModuleBanRedirect(Me);
+ }
+
+};
+
+
+extern "C" void * init_module( void )
+{
+ return new ModuleBanRedirectFactory;
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-19 01:32:43 +0000