src/modules/m_sqlauth.cpp

   1 /*
   2  * InspIRCd -- Internet Relay Chat Daemon
   3  *
   4  *   Copyright (C) 2009-2010 Daniel De Graaf <danieldg@inspircd.org>
   5  *
   6  * This file is part of InspIRCd.  InspIRCd is free software: you can
   7  * redistribute it and/or modify it under the terms of the GNU General Public
   8  * License as published by the Free Software Foundation, version 2.
   9  *
  10  * This program is distributed in the hope that it will be useful, but WITHOUT
  11  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
  12  * FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
  13  * details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  17  */
  18
  19
  20 #include "inspircd.h"
  21 #include "modules/sql.h"
  22 #include "modules/hash.h"
  23 #include "modules/ssl.h"
  24
  25 enum AuthState {
  26         AUTH_STATE_NONE = 0,
  27         AUTH_STATE_BUSY = 1,
  28         AUTH_STATE_FAIL = 2
  29 };
  30
  31 class AuthQuery : public SQLQuery
  32 {
  33  public:
  34         const std::string uid;
  35         LocalIntExt& pendingExt;
  36         bool verbose;
  37         AuthQuery(Module* me, const std::string& u, LocalIntExt& e, bool v)
  38                 : SQLQuery(me), uid(u), pendingExt(e), verbose(v)
  39         {
  40         }
  41
  42         void OnResult(SQLResult& res) CXX11_OVERRIDE
  43         {
  44                 User* user = ServerInstance->FindNick(uid);
  45                 if (!user)
  46                         return;
  47                 if (res.Rows())
  48                 {
  49                         pendingExt.set(user, AUTH_STATE_NONE);
  50                 }
  51                 else
  52                 {
  53                         if (verbose)
  54                                 ServerInstance->SNO->WriteGlobalSno('a', "Forbidden connection from %s (SQL query returned no matches)", user->GetFullRealHost().c_str());
  55                         pendingExt.set(user, AUTH_STATE_FAIL);
  56                 }
  57         }
  58
  59         void OnError(SQLerror& error) CXX11_OVERRIDE
  60         {
  61                 User* user = ServerInstance->FindNick(uid);
  62                 if (!user)
  63                         return;
  64                 pendingExt.set(user, AUTH_STATE_FAIL);
  65                 if (verbose)
  66                         ServerInstance->SNO->WriteGlobalSno('a', "Forbidden connection from %s (SQL query failed: %s)", user->GetFullRealHost().c_str(), error.Str());
  67         }
  68 };
  69
  70 class ModuleSQLAuth : public Module
  71 {
  72         LocalIntExt pendingExt;
  73         dynamic_reference<SQLProvider> SQL;
  74
  75         std::string freeformquery;
  76         std::string killreason;
  77         std::string allowpattern;
  78         bool verbose;
  79
  80  public:
  81         ModuleSQLAuth() : pendingExt("sqlauth-wait", this), SQL(this, "SQL")
  82         {
  83         }
  84
  85         void ReadConfig(ConfigStatus& status) CXX11_OVERRIDE
  86         {
  87                 ConfigTag* conf = ServerInstance->Config->ConfValue("sqlauth");
  88                 std::string dbid = conf->getString("dbid");
  89                 if (dbid.empty())
  90                         SQL.SetProvider("SQL");
  91                 else
  92                         SQL.SetProvider("SQL/" + dbid);
  93                 freeformquery = conf->getString("query");
  94                 killreason = conf->getString("killreason");
  95                 allowpattern = conf->getString("allowpattern");
  96                 verbose = conf->getBool("verbose");
  97         }
  98
  99         ModResult OnUserRegister(LocalUser* user) CXX11_OVERRIDE
 100         {
 101                 // Note this is their initial (unresolved) connect block
 102                 ConfigTag* tag = user->MyClass->config;
 103                 if (!tag->getBool("usesqlauth", true))
 104                         return MOD_RES_PASSTHRU;
 105
 106                 if (!allowpattern.empty() && InspIRCd::Match(user->nick,allowpattern))
 107                         return MOD_RES_PASSTHRU;
 108
 109                 if (pendingExt.get(user))
 110                         return MOD_RES_PASSTHRU;
 111
 112                 if (!SQL)
 113                 {
 114                         ServerInstance->SNO->WriteGlobalSno('a', "Forbiding connection from %s (SQL database not present)", user->GetFullRealHost().c_str());
 115                         ServerInstance->Users->QuitUser(user, killreason);
 116                         return MOD_RES_PASSTHRU;
 117                 }
 118
 119                 pendingExt.set(user, AUTH_STATE_BUSY);
 120
 121                 ParamM userinfo;
 122                 SQL->PopulateUserInfo(user, userinfo);
 123                 userinfo["pass"] = user->password;
 124
 125                 HashProvider* md5 = ServerInstance->Modules->FindDataService<HashProvider>("hash/md5");
 126                 if (md5)
 127                         userinfo["md5pass"] = md5->Generate(user->password);
 128
 129                 HashProvider* sha256 = ServerInstance->Modules->FindDataService<HashProvider>("hash/sha256");
 130                 if (sha256)
 131                         userinfo["sha256pass"] = sha256->Generate(user->password);
 132
 133                 const std::string certfp = SSLClientCert::GetFingerprint(&user->eh);
 134                 userinfo["certfp"] = certfp;
 135
 136                 SQL->submit(new AuthQuery(this, user->uuid, pendingExt, verbose), freeformquery, userinfo);
 137
 138                 return MOD_RES_PASSTHRU;
 139         }
 140
 141         ModResult OnCheckReady(LocalUser* user) CXX11_OVERRIDE
 142         {
 143                 switch (pendingExt.get(user))
 144                 {
 145                         case AUTH_STATE_NONE:
 146                                 return MOD_RES_PASSTHRU;
 147                         case AUTH_STATE_BUSY:
 148                                 return MOD_RES_DENY;
 149                         case AUTH_STATE_FAIL:
 150                                 ServerInstance->Users->QuitUser(user, killreason);
 151                                 return MOD_RES_DENY;
 152                 }
 153                 return MOD_RES_PASSTHRU;
 154         }
 155
 156         Version GetVersion() CXX11_OVERRIDE
 157         {
 158                 return Version("Allow/Deny connections based upon an arbitrary SQL table", VF_VENDOR);
 159         }
 160 };
 161
 162 MODULE_INIT(ModuleSQLAuth)