src/modules/extra/m_ssl_oper_cert.cpp

   1 /*       +------------------------------------+
   2  *       | Inspire Internet Relay Chat Daemon |
   3  *       +------------------------------------+
   4  *
   5  *  InspIRCd: (C) 2002-2008 InspIRCd Development Team
   6  * See: http://www.inspircd.org/wiki/index.php/Credits
   7  *
   8  * This program is free but copyrighted software; see
   9  *            the file COPYING for details.
  10  *
  11  * ---------------------------------------------------
  12  */
  13
  14 /* $ModDesc: Allows for MD5 encrypted oper passwords */
  15 /* $ModDep: transport.h */
  16
  17 #include "inspircd.h"
  18 #include "inspircd_config.h"
  19 #include "users.h"
  20 #include "channels.h"
  21 #include "modules.h"
  22 #include "transport.h"
  23 #include "wildcard.h"
  24
  25 /** Handle /FINGERPRINT
  26  */
  27 class cmd_fingerprint : public Command
  28 {
  29  public:
  30         cmd_fingerprint (InspIRCd* Instance) : Command(Instance,"FINGERPRINT", 0, 1)
  31         {
  32                 this->source = "m_ssl_oper_cert.so";
  33                 syntax = "<nickname>";
  34         }
  35
  36         CmdResult Handle (const std::vector<std::string> &parameters, User *user)
  37         {
  38                 User* target = ServerInstance->FindNick(parameters[0]);
  39                 if (target)
  40                 {
  41                         ssl_cert* cert;
  42                         if (target->GetExt("ssl_cert",cert))
  43                         {
  44                                 if (cert->GetFingerprint().length())
  45                                 {
  46                                         user->WriteServ("NOTICE %s :Certificate fingerprint for %s is %s",user->nick.c_str(),target->nick.c_str(),cert->GetFingerprint().c_str());
  47                                         return CMD_SUCCESS;
  48                                 }
  49                                 else
  50                                 {
  51                                         user->WriteServ("NOTICE %s :Certificate fingerprint for %s does not exist!", user->nick.c_str(),target->nick.c_str());
  52                                         return CMD_FAILURE;
  53                                 }
  54                         }
  55                         else
  56                         {
  57                                 user->WriteServ("NOTICE %s :Certificate fingerprint for %s does not exist!", user->nick.c_str(), target->nick.c_str());
  58                                 return CMD_FAILURE;
  59                         }
  60                 }
  61                 else
  62                 {
  63                         user->WriteNumeric(401, "%s %s :No such nickname", user->nick.c_str(), parameters[0].c_str());
  64                         return CMD_FAILURE;
  65                 }
  66         }
  67 };
  68
  69
  70
  71 class ModuleOperSSLCert : public Module
  72 {
  73         ssl_cert* cert;
  74         bool HasCert;
  75         cmd_fingerprint* mycommand;
  76         ConfigReader* cf;
  77  public:
  78
  79         ModuleOperSSLCert(InspIRCd* Me)
  80                 : Module(Me)
  81         {
  82                 mycommand = new cmd_fingerprint(ServerInstance);
  83                 ServerInstance->AddCommand(mycommand);
  84                 cf = new ConfigReader(ServerInstance);
  85                 Implementation eventlist[] = { I_OnPreCommand, I_OnRehash };
  86                 ServerInstance->Modules->Attach(eventlist, this, 2);
  87         }
  88
  89         virtual ~ModuleOperSSLCert()
  90         {
  91                 delete cf;
  92         }
  93
  94
  95         virtual void OnRehash(User* user, const std::string &parameter)
  96         {
  97                 delete cf;
  98                 cf = new ConfigReader(ServerInstance);
  99         }
 100
 101         bool OneOfMatches(const char* host, const char* ip, const char* hostlist)
 102         {
 103                 std::stringstream hl(hostlist);
 104                 std::string xhost;
 105                 while (hl >> xhost)
 106                 {
 107                         if (match(host, xhost) || match(ip, xhost, true))
 108                         {
 109                                 return true;
 110                         }
 111                 }
 112                 return false;
 113         }
 114
 115         virtual int OnPreCommand(std::string &command, std::vector<std::string> &parameters, User *user, bool validated, const std::string &original_line)
 116         {
 117                 irc::string cmd = command.c_str();
 118
 119                 if ((cmd == "OPER") && (validated))
 120                 {
 121                         char TheHost[MAXBUF];
 122                         char TheIP[MAXBUF];
 123                         std::string LoginName;
 124                         std::string Password;
 125                         std::string OperType;
 126                         std::string HostName;
 127                         std::string HashType;
 128                         std::string FingerPrint;
 129                         bool SSLOnly;
 130                         char* dummy;
 131
 132                         snprintf(TheHost,MAXBUF,"%s@%s",user->ident.c_str(),user->host.c_str());
 133                         snprintf(TheIP, MAXBUF,"%s@%s",user->ident.c_str(),user->GetIPString());
 134
 135                         HasCert = user->GetExt("ssl_cert",cert);
 136
 137                         for (int i = 0; i < cf->Enumerate("oper"); i++)
 138                         {
 139                                 LoginName = cf->ReadValue("oper", "name", i);
 140                                 Password = cf->ReadValue("oper", "password", i);
 141                                 OperType = cf->ReadValue("oper", "type", i);
 142                                 HostName = cf->ReadValue("oper", "host", i);
 143                                 HashType = cf->ReadValue("oper", "hash", i);
 144                                 FingerPrint = cf->ReadValue("oper", "fingerprint", i);
 145                                 SSLOnly = cf->ReadFlag("oper", "sslonly", i);
 146
 147                                 if (FingerPrint.empty() && !SSLOnly)
 148                                         continue;
 149
 150                                 if (LoginName != parameters[0])
 151                                         continue;
 152
 153                                 if (!OneOfMatches(TheHost, TheIP, HostName.c_str()))
 154                                         continue;
 155
 156                                 if (Password.length() && !ServerInstance->PassCompare(user, Password.c_str(),parameters[1].c_str(), HashType.c_str()))
 157                                         continue;
 158
 159                                 if (SSLOnly && !user->GetExt("ssl", dummy))
 160                                 {
 161                                         user->WriteNumeric(491, "%s :This oper login name requires an SSL connection.", user->nick.c_str());
 162                                         return 1;
 163                                 }
 164
 165                                 /*
 166                                  * No cert found or the fingerprint doesn't match
 167                                  */
 168                                 if ((!cert) || (cert->GetFingerprint() != FingerPrint))
 169                                 {
 170                                         user->WriteNumeric(491, "%s :This oper login name requires a matching key fingerprint.",user->nick.c_str());
 171                                         ServerInstance->SNO->WriteToSnoMask('o',"'%s' cannot oper, does not match fingerprint", user->nick.c_str());
 172                                         ServerInstance->Logs->Log("m_ssl_oper_cert",DEFAULT,"OPER: Failed oper attempt by %s!%s@%s: credentials valid, but wrong fingerprint.", user->nick.c_str(), user->ident.c_str(), user->host.c_str());
 173                                         return 1;
 174                                 }
 175                         }
 176                 }
 177
 178                 // Let core handle it for extra stuff
 179                 return 0;
 180         }
 181
 182         virtual Version GetVersion()
 183         {
 184                 return Version(1,2,0,0,VF_VENDOR,API_VERSION);
 185         }
 186 };
 187
 188 MODULE_INIT(ModuleOperSSLCert)
 189