src/modules/m_sslmodes.cpp

   1 /*
   2  * InspIRCd -- Internet Relay Chat Daemon
   3  *
   4  *   Copyright (C) 2009 Daniel De Graaf <danieldg@inspircd.org>
   5  *   Copyright (C) 2007 Robin Burchell <robin+git@viroteck.net>
   6  *   Copyright (C) 2007 Dennis Friis <peavey@inspircd.org>
   7  *   Copyright (C) 2006 Craig Edwards <craigedwards@brainbox.cc>
   8  *   Copyright (C) 2006 Oliver Lupton <oliverlupton@gmail.com>
   9  *
  10  * This file is part of InspIRCd.  InspIRCd is free software: you can
  11  * redistribute it and/or modify it under the terms of the GNU General Public
  12  * License as published by the Free Software Foundation, version 2.
  13  *
  14  * This program is distributed in the hope that it will be useful, but WITHOUT
  15  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
  16  * FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
  17  * details.
  18  *
  19  * You should have received a copy of the GNU General Public License
  20  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  21  */
  22
  23
  24 #include "inspircd.h"
  25 #include "modules/ssl.h"
  26
  27 /* $ModDesc: Provides channel mode +z to allow for Secure/SSL only channels */
  28
  29 /** Handle channel mode +z
  30  */
  31 class SSLMode : public ModeHandler
  32 {
  33  public:
  34         SSLMode(Module* Creator) : ModeHandler(Creator, "sslonly", 'z', PARAM_NONE, MODETYPE_CHANNEL) { }
  35
  36         ModeAction OnModeChange(User* source, User* dest, Channel* channel, std::string &parameter, bool adding)
  37         {
  38                 if (adding)
  39                 {
  40                         if (!channel->IsModeSet('z'))
  41                         {
  42                                 if (IS_LOCAL(source))
  43                                 {
  44                                         const UserMembList* userlist = channel->GetUsers();
  45                                         for(UserMembCIter i = userlist->begin(); i != userlist->end(); i++)
  46                                         {
  47                                                 UserCertificateRequest req(i->first, creator);
  48                                                 req.Send();
  49                                                 if(!req.cert && !ServerInstance->ULine(i->first->server))
  50                                                 {
  51                                                         source->WriteNumeric(ERR_ALLMUSTSSL, "%s %s :all members of the channel must be connected via SSL", source->nick.c_str(), channel->name.c_str());
  52                                                         return MODEACTION_DENY;
  53                                                 }
  54                                         }
  55                                 }
  56                                 channel->SetMode('z',true);
  57                                 return MODEACTION_ALLOW;
  58                         }
  59                         else
  60                         {
  61                                 return MODEACTION_DENY;
  62                         }
  63                 }
  64                 else
  65                 {
  66                         if (channel->IsModeSet('z'))
  67                         {
  68                                 channel->SetMode('z',false);
  69                                 return MODEACTION_ALLOW;
  70                         }
  71
  72                         return MODEACTION_DENY;
  73                 }
  74         }
  75 };
  76
  77 class ModuleSSLModes : public Module
  78 {
  79
  80         SSLMode sslm;
  81
  82  public:
  83         ModuleSSLModes()
  84                 : sslm(this)
  85         {
  86         }
  87
  88         void init() CXX11_OVERRIDE
  89         {
  90                 ServerInstance->Modules->AddService(sslm);
  91                 Implementation eventlist[] = { I_OnUserPreJoin, I_OnCheckBan, I_On005Numeric };
  92                 ServerInstance->Modules->Attach(eventlist, this, sizeof(eventlist)/sizeof(Implementation));
  93         }
  94
  95         ModResult OnUserPreJoin(LocalUser* user, Channel* chan, const std::string& cname, std::string& privs, const std::string& keygiven) CXX11_OVERRIDE
  96         {
  97                 if(chan && chan->IsModeSet('z'))
  98                 {
  99                         UserCertificateRequest req(user, this);
 100                         req.Send();
 101                         if (req.cert)
 102                         {
 103                                 // Let them in
 104                                 return MOD_RES_PASSTHRU;
 105                         }
 106                         else
 107                         {
 108                                 // Deny
 109                                 user->WriteServ( "489 %s %s :Cannot join channel; SSL users only (+z)", user->nick.c_str(), cname.c_str());
 110                                 return MOD_RES_DENY;
 111                         }
 112                 }
 113
 114                 return MOD_RES_PASSTHRU;
 115         }
 116
 117         ModResult OnCheckBan(User *user, Channel *c, const std::string& mask) CXX11_OVERRIDE
 118         {
 119                 if ((mask.length() > 2) && (mask[0] == 'z') && (mask[1] == ':'))
 120                 {
 121                         UserCertificateRequest req(user, this);
 122                         req.Send();
 123                         if (req.cert && InspIRCd::Match(req.cert->GetFingerprint(), mask.substr(2)))
 124                                 return MOD_RES_DENY;
 125                 }
 126                 return MOD_RES_PASSTHRU;
 127         }
 128
 129         void On005Numeric(std::map<std::string, std::string>& tokens) CXX11_OVERRIDE
 130         {
 131                 tokens["EXTBAN"].push_back('z');
 132         }
 133
 134         Version GetVersion() CXX11_OVERRIDE
 135         {
 136                 return Version("Provides channel mode +z to allow for Secure/SSL only channels", VF_VENDOR);
 137         }
 138 };
 139
 140 MODULE_INIT(ModuleSSLModes)