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 /** Handle channel mode +z
  28  */
  29 class SSLMode : public ModeHandler
  30 {
  31  public:
  32         UserCertificateAPI API;
  33
  34         SSLMode(Module* Creator)
  35                 : ModeHandler(Creator, "sslonly", 'z', PARAM_NONE, MODETYPE_CHANNEL)
  36                 , API(Creator)
  37         {
  38         }
  39
  40         ModeAction OnModeChange(User* source, User* dest, Channel* channel, std::string &parameter, bool adding)
  41         {
  42                 if (adding)
  43                 {
  44                         if (!channel->IsModeSet(this))
  45                         {
  46                                 if (IS_LOCAL(source))
  47                                 {
  48                                         if (!API)
  49                                                 return MODEACTION_DENY;
  50
  51                                         const UserMembList* userlist = channel->GetUsers();
  52                                         for(UserMembCIter i = userlist->begin(); i != userlist->end(); i++)
  53                                         {
  54                                                 ssl_cert* cert = API->GetCertificate(i->first);
  55                                                 if (!cert && !ServerInstance->ULine(i->first->server))
  56                                                 {
  57                                                         source->WriteNumeric(ERR_ALLMUSTSSL, "%s %s :all members of the channel must be connected via SSL", source->nick.c_str(), channel->name.c_str());
  58                                                         return MODEACTION_DENY;
  59                                                 }
  60                                         }
  61                                 }
  62                                 channel->SetMode(this, true);
  63                                 return MODEACTION_ALLOW;
  64                         }
  65                         else
  66                         {
  67                                 return MODEACTION_DENY;
  68                         }
  69                 }
  70                 else
  71                 {
  72                         if (channel->IsModeSet(this))
  73                         {
  74                                 channel->SetMode(this, false);
  75                                 return MODEACTION_ALLOW;
  76                         }
  77
  78                         return MODEACTION_DENY;
  79                 }
  80         }
  81 };
  82
  83 class ModuleSSLModes : public Module
  84 {
  85
  86         SSLMode sslm;
  87
  88  public:
  89         ModuleSSLModes()
  90                 : sslm(this)
  91         {
  92         }
  93
  94         void init() CXX11_OVERRIDE
  95         {
  96                 ServerInstance->Modules->AddService(sslm);
  97         }
  98
  99         ModResult OnUserPreJoin(LocalUser* user, Channel* chan, const std::string& cname, std::string& privs, const std::string& keygiven) CXX11_OVERRIDE
 100         {
 101                 if(chan && chan->IsModeSet(sslm))
 102                 {
 103                         if (!sslm.API)
 104                                 return MOD_RES_DENY;
 105
 106                         ssl_cert* cert = sslm.API->GetCertificate(user);
 107                         if (cert)
 108                         {
 109                                 // Let them in
 110                                 return MOD_RES_PASSTHRU;
 111                         }
 112                         else
 113                         {
 114                                 // Deny
 115                                 user->WriteServ( "489 %s %s :Cannot join channel; SSL users only (+z)", user->nick.c_str(), cname.c_str());
 116                                 return MOD_RES_DENY;
 117                         }
 118                 }
 119
 120                 return MOD_RES_PASSTHRU;
 121         }
 122
 123         ModResult OnCheckBan(User *user, Channel *c, const std::string& mask) CXX11_OVERRIDE
 124         {
 125                 if ((mask.length() > 2) && (mask[0] == 'z') && (mask[1] == ':'))
 126                 {
 127                         if (!sslm.API)
 128                                 return MOD_RES_DENY;
 129
 130                         ssl_cert* cert = sslm.API->GetCertificate(user);
 131                         if (cert && InspIRCd::Match(cert->GetFingerprint(), mask.substr(2)))
 132                                 return MOD_RES_DENY;
 133                 }
 134                 return MOD_RES_PASSTHRU;
 135         }
 136
 137         void On005Numeric(std::map<std::string, std::string>& tokens) CXX11_OVERRIDE
 138         {
 139                 tokens["EXTBAN"].push_back('z');
 140         }
 141
 142         Version GetVersion() CXX11_OVERRIDE
 143         {
 144                 return Version("Provides channel mode +z to allow for Secure/SSL only channels", VF_VENDOR);
 145         }
 146 };
 147
 148 MODULE_INIT(ModuleSSLModes)