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