From 7e7cdc4f2f04225369dd4a2bf092cc9a03245c49 Mon Sep 17 00:00:00 2001 From: w00t Date: Fri, 24 Oct 2008 14:56:43 +0000 Subject: [PATCH] Remove (redundant and O(n)) error checking on +L, we catch the errors on join nowdays anyway, so this was a throwback to the "old days". Also, add two new restrictions on +L: target channel must exist, and setter *must* be opped on target channel. Avoids redirect spamming and other nefarious things. Additionally, reworded numerics a bit to make it more generic, as we may forward for more than just +l in the future. git-svn-id: http://svn.inspircd.org/repository/trunk/inspircd@10699 e03df62e-2008-0410-955e-edbf42e46eb7 --- src/modules/m_redirect.cpp | 41 ++++++++++++++++---------------------- 1 file changed, 17 insertions(+), 24 deletions(-) diff --git a/src/modules/m_redirect.cpp b/src/modules/m_redirect.cpp index 3ed3a0791..63ad7ee7e 100644 --- a/src/modules/m_redirect.cpp +++ b/src/modules/m_redirect.cpp @@ -50,31 +50,24 @@ class Redirect : public ModeHandler } c = ServerInstance->FindChan(parameter); - if (c) + if (!c) { - /* Fix by brain: Dont let a channel be linked to *itself* either */ - if (IS_LOCAL(source)) - { - if ((c == channel) || (c->IsModeSet('L'))) - { - source->WriteNumeric(690, "%s :Circular or chained +L to %s not allowed (Channel already has +L). Pack of wild dogs has been unleashed.",source->nick.c_str(),parameter.c_str()); - parameter.clear(); - return MODEACTION_DENY; - } - else - { - for (chan_hash::const_iterator i = ServerInstance->chanlist->begin(); i != ServerInstance->chanlist->end(); i++) - { - if ((i->second != channel) && (i->second->IsModeSet('L')) && (irc::string(i->second->GetModeParameter('L').c_str()) == channel->name)) - { - source->WriteNumeric(690, "%s :Circular or chained +L to %s not allowed (Already forwarded here from %s). Angry monkeys dispatched.",source->nick.c_str(), parameter.c_str(), i->second->name.c_str()); - return MODEACTION_DENY; - } - } - } - } + source->WriteNumeric(690, "%s :Target channel %s must exist to be set as a redirect.",source->nick.c_str(),parameter.c_str()); + parameter.clear(); + return MODEACTION_DENY; + } + + if (c->GetStatus(source) < STATUS_OP && !IS_OPER(source)) + { + source->WriteNumeric(690, "%s :You must be opped on %s to set it as a redirect.",source->nick.c_str(),parameter.c_str()); + parameter.clear(); + return MODEACTION_DENY; } + /* + * We used to do some checking for circular +L here, but there is no real need for this any more especially as we + * now catch +L looping in PreJoin. Remove it, since O(n) logic makes me sad, and we catch it anyway. :) -- w00t + */ channel->SetMode('L', true); channel->SetModeParam('L', parameter.c_str(), true); return MODEACTION_ALLOW; @@ -127,11 +120,11 @@ class ModuleRedirect : public Module destchan = ServerInstance->FindChan(channel); if (destchan && destchan->IsModeSet('L')) { - user->WriteNumeric(470, "%s :%s is full, but has a circular redirect (+L), not following redirection to %s", user->nick.c_str(), cname, channel.c_str()); + user->WriteNumeric(470, "%s :You may not join %s. A redirect is set, but you may not be redirected as it is a circular loop.", user->nick.c_str(), cname); return 1; } - user->WriteNumeric(470, "%s :%s has become full, so you are automatically being transferred to the linked channel %s", user->nick.c_str(), cname, channel.c_str()); + user->WriteNumeric(470, "%s :You may not join %s, so you are automatically being transferred to the redirect channel %s", user->nick.c_str(), cname, channel.c_str()); Channel::JoinUser(ServerInstance, user, channel.c_str(), false, "", false, ServerInstance->Time()); return 1; } -- 2.39.5