src/modules/m_sslmodes.cpp

   1 /*       +------------------------------------+
   2  *       | Inspire Internet Relay Chat Daemon |
   3  *       +------------------------------------+
   4  *
   5  *  InspIRCd: (C) 2002-2009 InspIRCd Development Team
   6  * See: http://wiki.inspircd.org/Credits
   7  *
   8  * This program is free but copyrighted software; see
   9  *            the file COPYING for details.
  10  *
  11  * ---------------------------------------------------
  12  */
  13
  14 #include "inspircd.h"
  15 #include "transport.h"
  16
  17 /* $ModDesc: Provides support for unreal-style channel mode +z */
  18
  19 /** Handle channel mode +z
  20  */
  21 class SSLMode : public ModeHandler
  22 {
  23  public:
  24         SSLMode(Module* Creator) : ModeHandler(Creator, 'z', PARAM_NONE, MODETYPE_CHANNEL) { }
  25
  26         ModeAction OnModeChange(User* source, User* dest, Channel* channel, std::string &parameter, bool adding)
  27         {
  28                 if (adding)
  29                 {
  30                         if (!channel->IsModeSet('z'))
  31                         {
  32                                 if (IS_LOCAL(source))
  33                                 {
  34                                         const UserMembList* userlist = channel->GetUsers();
  35                                         for(UserMembCIter i = userlist->begin(); i != userlist->end(); i++)
  36                                         {
  37                                                 BufferedSocketCertificateRequest req(i->first, creator, i->first->GetIOHook());
  38                                                 req.Send();
  39                                                 if(!req.cert && !ServerInstance->ULine(i->first->server))
  40                                                 {
  41                                                         source->WriteNumeric(ERR_ALLMUSTSSL, "%s %s :all members of the channel must be connected via SSL", source->nick.c_str(), channel->name.c_str());
  42                                                         return MODEACTION_DENY;
  43                                                 }
  44                                         }
  45                                 }
  46                                 channel->SetMode('z',true);
  47                                 return MODEACTION_ALLOW;
  48                         }
  49                         else
  50                         {
  51                                 return MODEACTION_DENY;
  52                         }
  53                 }
  54                 else
  55                 {
  56                         if (channel->IsModeSet('z'))
  57                         {
  58                                 channel->SetMode('z',false);
  59                                 return MODEACTION_ALLOW;
  60                         }
  61
  62                         return MODEACTION_DENY;
  63                 }
  64         }
  65 };
  66
  67 class ModuleSSLModes : public Module
  68 {
  69
  70         SSLMode sslm;
  71
  72  public:
  73         ModuleSSLModes()
  74                 : sslm(this)
  75         {
  76                 if (!ServerInstance->Modes->AddMode(&sslm))
  77                         throw ModuleException("Could not add new modes!");
  78                 Implementation eventlist[] = { I_OnUserPreJoin, I_OnCheckBan, I_On005Numeric };
  79                 ServerInstance->Modules->Attach(eventlist, this, 3);
  80         }
  81
  82         ModResult OnUserPreJoin(User* user, Channel* chan, const char* cname, std::string &privs, const std::string &keygiven)
  83         {
  84                 if(chan && chan->IsModeSet('z'))
  85                 {
  86                         BufferedSocketCertificateRequest req(user, this, user->GetIOHook());
  87                         req.Send();
  88                         if (req.cert)
  89                         {
  90                                 // Let them in
  91                                 return MOD_RES_PASSTHRU;
  92                         }
  93                         else
  94                         {
  95                                 // Deny
  96                                 user->WriteServ( "489 %s %s :Cannot join channel; SSL users only (+z)", user->nick.c_str(), cname);
  97                                 return MOD_RES_DENY;
  98                         }
  99                 }
 100
 101                 return MOD_RES_PASSTHRU;
 102         }
 103
 104         ModResult OnCheckBan(User *user, Channel *c, const std::string& mask)
 105         {
 106                 if (mask[0] == 'z' && mask[1] == ':')
 107                 {
 108                         BufferedSocketCertificateRequest req(user, this, user->GetIOHook());
 109                         req.Send();
 110                         if (req.cert && InspIRCd::Match(req.cert->GetFingerprint(), mask.substr(2)))
 111                                 return MOD_RES_DENY;
 112                 }
 113                 return MOD_RES_PASSTHRU;
 114         }
 115
 116         ~ModuleSSLModes()
 117         {
 118         }
 119
 120         void On005Numeric(std::string &output)
 121         {
 122                 ServerInstance->AddExtBanChar('z');
 123         }
 124
 125         Version GetVersion()
 126         {
 127                 return Version("Provides support for unreal-style channel mode +z", VF_COMMON | VF_VENDOR, API_VERSION);
 128         }
 129 };
 130
 131
 132 MODULE_INIT(ModuleSSLModes)
 133