src/modules/extra/m_ssl_gnutls.cpp

   1 #include <string>
   2 #include <vector>
   3
   4 #include <gnutls/gnutls.h>
   5
   6 #include "inspircd_config.h"
   7 #include "configreader.h"
   8 #include "users.h"
   9 #include "channels.h"
  10 #include "modules.h"
  11
  12 #include "socket.h"
  13 #include "hashcomp.h"
  14 #include "inspircd.h"
  15
  16 /* $ModDesc: Provides SSL support for clients */
  17 /* $CompileFlags: `libgnutls-config --cflags` */
  18 /* $LinkerFlags: `libgnutls-config --libs` `perl ../gnutls_rpath.pl` */
  19
  20
  21
  22 enum issl_status { ISSL_NONE, ISSL_HANDSHAKING_READ, ISSL_HANDSHAKING_WRITE, ISSL_HANDSHAKEN, ISSL_CLOSING, ISSL_CLOSED };
  23
  24 bool isin(int port, const std::vector<int> &portlist)
  25 {
  26         for(unsigned int i = 0; i < portlist.size(); i++)
  27                 if(portlist[i] == port)
  28                         return true;
  29
  30         return false;
  31 }
  32
  33 class issl_session : public classbase
  34 {
  35 public:
  36         gnutls_session_t sess;
  37         issl_status status;
  38         std::string outbuf;
  39         int inbufoffset;
  40         char* inbuf;
  41         int fd;
  42 };
  43
  44 class ModuleSSLGnuTLS : public Module
  45 {
  46
  47         ConfigReader* Conf;
  48
  49         char* dummy;
  50
  51         CullList* culllist;
  52
  53         std::vector<int> listenports;
  54
  55         int inbufsize;
  56         issl_session sessions[MAX_DESCRIPTORS];
  57
  58         gnutls_certificate_credentials x509_cred;
  59         gnutls_dh_params dh_params;
  60
  61         std::string keyfile;
  62         std::string certfile;
  63         std::string cafile;
  64         std::string crlfile;
  65         int dh_bits;
  66
  67  public:
  68
  69         ModuleSSLGnuTLS(InspIRCd* Me)
  70                 : Module::Module(Me)
  71         {
  72
  73
  74                 culllist = new CullList(ServerInstance);
  75
  76                 // Not rehashable...because I cba to reduce all the sizes of existing buffers.
  77                 inbufsize = ServerInstance->Config->NetBufferSize;
  78
  79                 gnutls_global_init(); // This must be called once in the program
  80
  81                 if(gnutls_certificate_allocate_credentials(&x509_cred) != 0)
  82                         ServerInstance->Log(DEFAULT, "m_ssl_gnutls.so: Failed to allocate certificate credentials");
  83
  84                 // Guessing return meaning
  85                 if(gnutls_dh_params_init(&dh_params) < 0)
  86                         ServerInstance->Log(DEFAULT, "m_ssl_gnutls.so: Failed to initialise DH parameters");
  87
  88                 // Needs the flag as it ignores a plain /rehash
  89                 OnRehash("ssl");
  90
  91                 // Void return, guess we assume success
  92                 gnutls_certificate_set_dh_params(x509_cred, dh_params);
  93         }
  94
  95         virtual void OnRehash(const std::string &param)
  96         {
  97                 if(param != "ssl")
  98                         return;
  99
 100                 Conf = new ConfigReader(ServerInstance);
 101
 102                 for(unsigned int i = 0; i < listenports.size(); i++)
 103                 {
 104                         ServerInstance->Config->DelIOHook(listenports[i]);
 105                 }
 106
 107                 listenports.clear();
 108
 109                 for(int i = 0; i < Conf->Enumerate("bind"); i++)
 110                 {
 111                         // For each <bind> tag
 112                         if(((Conf->ReadValue("bind", "type", i) == "") || (Conf->ReadValue("bind", "type", i) == "clients")) && (Conf->ReadValue("bind", "ssl", i) == "gnutls"))
 113                         {
 114                                 // Get the port we're meant to be listening on with SSL
 115                                 unsigned int port = Conf->ReadInteger("bind", "port", i, true);
 116                                 if (ServerInstance->Config->AddIOHook(port, this))
 117                                 {
 118                                         // We keep a record of which ports we're listening on with SSL
 119                                         listenports.push_back(port);
 120
 121                                         ServerInstance->Log(DEFAULT, "m_ssl_gnutls.so: Enabling SSL for port %d", port);
 122                                 }
 123                                 else
 124                                 {
 125                                         ServerInstance->Log(DEFAULT, "m_ssl_gnutls.so: FAILED to enable SSL on port %d, maybe you have another ssl or similar module loaded?", port);
 126                                 }
 127                         }
 128                 }
 129
 130                 std::string confdir(CONFIG_FILE);
 131                 // +1 so we the path ends with a /
 132                 confdir = confdir.substr(0, confdir.find_last_of('/') + 1);
 133
 134                 cafile  = Conf->ReadValue("gnutls", "cafile", 0);
 135                 crlfile = Conf->ReadValue("gnutls", "crlfile", 0);
 136                 certfile        = Conf->ReadValue("gnutls", "certfile", 0);
 137                 keyfile = Conf->ReadValue("gnutls", "keyfile", 0);
 138                 dh_bits = Conf->ReadInteger("gnutls", "dhbits", 0, false);
 139
 140                 // Set all the default values needed.
 141                 if(cafile == "")
 142                         cafile = "ca.pem";
 143
 144                 if(crlfile == "")
 145                         crlfile = "crl.pem";
 146
 147                 if(certfile == "")
 148                         certfile = "cert.pem";
 149
 150                 if(keyfile == "")
 151                         keyfile = "key.pem";
 152
 153                 if((dh_bits != 768) && (dh_bits != 1024) && (dh_bits != 2048) && (dh_bits != 3072) && (dh_bits != 4096))
 154                         dh_bits = 1024;
 155
 156                 // Prepend relative paths with the path to the config directory.
 157                 if(cafile[0] != '/')
 158                         cafile = confdir + cafile;
 159
 160                 if(crlfile[0] != '/')
 161                         crlfile = confdir + crlfile;
 162
 163                 if(certfile[0] != '/')
 164                         certfile = confdir + certfile;
 165
 166                 if(keyfile[0] != '/')
 167                         keyfile = confdir + keyfile;
 168
 169                 if(gnutls_certificate_set_x509_trust_file(x509_cred, cafile.c_str(), GNUTLS_X509_FMT_PEM) < 0)
 170                         ServerInstance->Log(DEFAULT, "m_ssl_gnutls.so: Failed to set X.509 trust file: %s", cafile.c_str());
 171
 172                 if(gnutls_certificate_set_x509_crl_file (x509_cred, crlfile.c_str(), GNUTLS_X509_FMT_PEM) < 0)
 173                         ServerInstance->Log(DEFAULT, "m_ssl_gnutls.so: Failed to set X.509 CRL file: %s", crlfile.c_str());
 174
 175                 // Guessing on the return value of this, manual doesn't say :|
 176                 if(gnutls_certificate_set_x509_key_file (x509_cred, certfile.c_str(), keyfile.c_str(), GNUTLS_X509_FMT_PEM) < 0)
 177                         ServerInstance->Log(DEFAULT, "m_ssl_gnutls.so: Failed to set X.509 certificate and key files: %s and %s", certfile.c_str(), keyfile.c_str());
 178
 179                 // This may be on a large (once a day or week) timer eventually.
 180                 GenerateDHParams();
 181
 182                 DELETE(Conf);
 183         }
 184
 185         void GenerateDHParams()
 186         {
 187                 // Generate Diffie Hellman parameters - for use with DHE
 188                 // kx algorithms. These should be discarded and regenerated
 189                 // once a day, once a week or once a month. Depending on the
 190                 // security requirements.
 191
 192                 if(gnutls_dh_params_generate2(dh_params, dh_bits) < 0)
 193                         ServerInstance->Log(DEFAULT, "m_ssl_gnutls.so: Failed to generate DH parameters (%d bits)", dh_bits);
 194         }
 195
 196         virtual ~ModuleSSLGnuTLS()
 197         {
 198                 gnutls_dh_params_deinit(dh_params);
 199                 gnutls_certificate_free_credentials(x509_cred);
 200                 gnutls_global_deinit();
 201                 delete culllist;
 202         }
 203
 204         virtual void OnCleanup(int target_type, void* item)
 205         {
 206                 if(target_type == TYPE_USER)
 207                 {
 208                         userrec* user = (userrec*)item;
 209
 210                         if(user->GetExt("ssl", dummy) && isin(user->GetPort(), listenports))
 211                         {
 212                                 // User is using SSL, they're a local user, and they're using one of *our* SSL ports.
 213                                 // Potentially there could be multiple SSL modules loaded at once on different ports.
 214                                 ServerInstance->Log(DEBUG, "m_ssl_gnutls.so: Adding user %s to cull list", user->nick);
 215                                 culllist->AddItem(user, "SSL module unloading");
 216                         }
 217                 }
 218         }
 219
 220         virtual void OnUnloadModule(Module* mod, const std::string &name)
 221         {
 222                 if(mod == this)
 223                 {
 224                         // We're being unloaded, kill all the users added to the cull list in OnCleanup
 225                         int numusers = culllist->Apply();
 226                         ServerInstance->Log(DEBUG, "m_ssl_gnutls.so: Killed %d users for unload of GnuTLS SSL module", numusers);
 227
 228                         for(unsigned int i = 0; i < listenports.size(); i++)
 229                                 ServerInstance->Config->DelIOHook(listenports[i]);
 230                 }
 231         }
 232
 233         virtual Version GetVersion()
 234         {
 235                 return Version(1, 0, 0, 0, VF_VENDOR);
 236         }
 237
 238         void Implements(char* List)
 239         {
 240                 List[I_OnRawSocketAccept] = List[I_OnRawSocketClose] = List[I_OnRawSocketRead] = List[I_OnRawSocketWrite] = List[I_OnCleanup] = 1;
 241                 List[I_OnSyncUserMetaData] = List[I_OnDecodeMetaData] = List[I_OnUnloadModule] = List[I_OnRehash] = List[I_OnWhois] = List[I_OnGlobalConnect] = 1;
 242         }
 243
 244         virtual void OnRawSocketAccept(int fd, const std::string &ip, int localport)
 245         {
 246                 issl_session* session = &sessions[fd];
 247
 248                 session->fd = fd;
 249                 session->inbuf = new char[inbufsize];
 250                 session->inbufoffset = 0;
 251
 252                 gnutls_init(&session->sess, GNUTLS_SERVER);
 253
 254                 gnutls_set_default_priority(session->sess); // Avoid calling all the priority functions, defaults are adequate.
 255                 gnutls_credentials_set(session->sess, GNUTLS_CRD_CERTIFICATE, x509_cred);
 256                 gnutls_certificate_server_set_request(session->sess, GNUTLS_CERT_REQUEST); // Request client certificate if any.
 257                 gnutls_dh_set_prime_bits(session->sess, dh_bits);
 258
 259                 /* This is an experimental change to avoid a warning on 64bit systems about casting between integer and pointer of different sizes
 260                  * This needs testing, but it's easy enough to rollback if need be
 261                  * Old: gnutls_transport_set_ptr(session->sess, (gnutls_transport_ptr_t) fd); // Give gnutls the fd for the socket.
 262                  * New: gnutls_transport_set_ptr(session->sess, &fd); // Give gnutls the fd for the socket.
 263                  *
 264                  * With testing this seems to...not work :/
 265                  */
 266
 267                 gnutls_transport_set_ptr(session->sess, (gnutls_transport_ptr_t) fd); // Give gnutls the fd for the socket.
 268
 269                 Handshake(session);
 270         }
 271
 272         virtual void OnRawSocketClose(int fd)
 273         {
 274                 ServerInstance->Log(DEBUG, "OnRawSocketClose: %d", fd);
 275                 CloseSession(&sessions[fd]);
 276         }
 277
 278         virtual int OnRawSocketRead(int fd, char* buffer, unsigned int count, int &readresult)
 279         {
 280                 issl_session* session = &sessions[fd];
 281
 282                 if(!session->sess)
 283                 {
 284                         ServerInstance->Log(DEBUG, "m_ssl_gnutls.so: OnRawSocketRead: No session to read from");
 285                         readresult = 0;
 286                         CloseSession(session);
 287                         return 1;
 288                 }
 289
 290                 ServerInstance->Log(DEBUG, "m_ssl_gnutls.so: OnRawSocketRead(%d, buffer, %u, %d)", fd, count, readresult);
 291
 292                 if(session->status == ISSL_HANDSHAKING_READ)
 293                 {
 294                         // The handshake isn't finished, try to finish it.
 295
 296                         if(Handshake(session))
 297                         {
 298                                 // Handshake successfully resumed.
 299                                 ServerInstance->Log(DEBUG, "m_ssl_gnutls.so: OnRawSocketRead: successfully resumed handshake");
 300                         }
 301                         else
 302                         {
 303                                 // Couldn't resume handshake.
 304                                 ServerInstance->Log(DEBUG, "m_ssl_gnutls.so: OnRawSocketRead: failed to resume handshake");
 305                                 return -1;
 306                         }
 307                 }
 308                 else if(session->status == ISSL_HANDSHAKING_WRITE)
 309                 {
 310                         ServerInstance->Log(DEBUG, "m_ssl_gnutls.so: OnRawSocketRead: handshake wants to write data but we are currently reading");
 311                         return -1;
 312                 }
 313
 314                 // If we resumed the handshake then session->status will be ISSL_HANDSHAKEN.
 315
 316                 if(session->status == ISSL_HANDSHAKEN)
 317                 {
 318                         // Is this right? Not sure if the unencrypted data is garaunteed to be the same length.
 319                         // Read into the inbuffer, offset from the beginning by the amount of data we have that insp hasn't taken yet.
 320                         ServerInstance->Log(DEBUG, "m_ssl_gnutls.so: gnutls_record_recv(sess, inbuf+%d, %d-%d)", session->inbufoffset, inbufsize, session->inbufoffset);
 321
 322                         int ret = gnutls_record_recv(session->sess, session->inbuf + session->inbufoffset, inbufsize - session->inbufoffset);
 323
 324                         if(ret == 0)
 325                         {
 326                                 // Client closed connection.
 327                                 ServerInstance->Log(DEBUG, "m_ssl_gnutls.so: Client closed the connection");
 328                                 readresult = 0;
 329                                 CloseSession(session);
 330                                 return 1;
 331                         }
 332                         else if(ret < 0)
 333                         {
 334                                 if(ret == GNUTLS_E_AGAIN || ret == GNUTLS_E_INTERRUPTED)
 335                                 {
 336                                         ServerInstance->Log(DEBUG, "m_ssl_gnutls.so: OnRawSocketRead: Not all SSL data read: %s", gnutls_strerror(ret));
 337                                         return -1;
 338                                 }
 339                                 else
 340                                 {
 341                                         ServerInstance->Log(DEBUG, "m_ssl_gnutls.so: OnRawSocketRead: Error reading SSL data: %s", gnutls_strerror(ret));
 342                                         readresult = 0;
 343                                         CloseSession(session);
 344                                 }
 345                         }
 346                         else
 347                         {
 348                                 // Read successfully 'ret' bytes into inbuf + inbufoffset
 349                                 // There are 'ret' + 'inbufoffset' bytes of data in 'inbuf'
 350                                 // 'buffer' is 'count' long
 351
 352                                 unsigned int length = ret + session->inbufoffset;
 353
 354                                 ServerInstance->Log(DEBUG, "m_ssl_gnutls.so: OnRawSocketRead: Read %d bytes, now have %d waiting to be passed up", ret, length);
 355
 356                                 if(count <= length)
 357                                 {
 358                                         memcpy(buffer, session->inbuf, count);
 359                                         // Move the stuff left in inbuf to the beginning of it
 360                                         memcpy(session->inbuf, session->inbuf + count, (length - count));
 361                                         // Now we need to set session->inbufoffset to the amount of data still waiting to be handed to insp.
 362                                         session->inbufoffset = length - count;
 363                                         // Insp uses readresult as the count of how much data there is in buffer, so:
 364                                         readresult = count;
 365                                 }
 366                                 else
 367                                 {
 368                                         // There's not as much in the inbuf as there is space in the buffer, so just copy the whole thing.
 369                                         memcpy(buffer, session->inbuf, length);
 370                                         // Zero the offset, as there's nothing there..
 371                                         session->inbufoffset = 0;
 372                                         // As above
 373                                         readresult = length;
 374                                 }
 375                         }
 376                 }
 377                 else if(session->status == ISSL_CLOSING)
 378                 {
 379                         ServerInstance->Log(DEBUG, "m_ssl_gnutls.so: OnRawSocketRead: session closing...");
 380                         readresult = 0;
 381                 }
 382
 383                 return 1;
 384         }
 385
 386         virtual int OnRawSocketWrite(int fd, const char* buffer, int count)
 387         {
 388                 issl_session* session = &sessions[fd];
 389                 const char* sendbuffer = buffer;
 390
 391                 if(!session->sess)
 392                 {
 393                         ServerInstance->Log(DEBUG, "m_ssl_gnutls.so: OnRawSocketWrite: No session to write to");
 394                         CloseSession(session);
 395                         return 1;
 396                 }
 397
 398                 if(session->status == ISSL_HANDSHAKING_WRITE)
 399                 {
 400                         // The handshake isn't finished, try to finish it.
 401
 402                         if(Handshake(session))
 403                         {
 404                                 // Handshake successfully resumed.
 405                                 ServerInstance->Log(DEBUG, "m_ssl_gnutls.so: OnRawSocketWrite: successfully resumed handshake");
 406                         }
 407                         else
 408                         {
 409                                 // Couldn't resume handshake.
 410                                 ServerInstance->Log(DEBUG, "m_ssl_gnutls.so: OnRawSocketWrite: failed to resume handshake");
 411                         }
 412                 }
 413                 else if(session->status == ISSL_HANDSHAKING_READ)
 414                 {
 415                         ServerInstance->Log(DEBUG, "m_ssl_gnutls.so: OnRawSocketWrite: handshake wants to read data but we are currently writing");
 416                 }
 417
 418                 ServerInstance->Log(DEBUG, "m_ssl_gnutls.so: OnRawSocketWrite: Adding %d bytes to the outgoing buffer", count);
 419                 session->outbuf.append(sendbuffer, count);
 420                 sendbuffer = session->outbuf.c_str();
 421                 count = session->outbuf.size();
 422
 423                 if(session->status == ISSL_HANDSHAKEN)
 424                 {
 425                         int ret = gnutls_record_send(session->sess, sendbuffer, count);
 426
 427                         if(ret == 0)
 428                         {
 429                                 ServerInstance->Log(DEBUG, "m_ssl_gnutls.so: OnRawSocketWrite: Client closed the connection");
 430                                 CloseSession(session);
 431                         }
 432                         else if(ret < 0)
 433                         {
 434                                 if(ret == GNUTLS_E_AGAIN || ret == GNUTLS_E_INTERRUPTED)
 435                                 {
 436                                         ServerInstance->Log(DEBUG, "m_ssl_gnutls.so: OnRawSocketWrite: Not all SSL data written: %s", gnutls_strerror(ret));
 437                                 }
 438                                 else
 439                                 {
 440                                         ServerInstance->Log(DEBUG, "m_ssl_gnutls.so: OnRawSocketWrite: Error writing SSL data: %s", gnutls_strerror(ret));
 441                                         CloseSession(session);
 442                                 }
 443                         }
 444                         else
 445                         {
 446                                 ServerInstance->Log(DEBUG, "m_ssl_gnutls.so: OnRawSocketWrite: Successfully wrote %d bytes", ret);
 447                                 session->outbuf = session->outbuf.substr(ret);
 448                         }
 449                 }
 450                 else if(session->status == ISSL_CLOSING)
 451                 {
 452                         ServerInstance->Log(DEBUG, "m_ssl_gnutls.so: OnRawSocketWrite: session closing...");
 453                 }
 454
 455                 return 1;
 456         }
 457
 458         // :kenny.chatspike.net 320 Om Epy|AFK :is a Secure Connection
 459         virtual void OnWhois(userrec* source, userrec* dest)
 460         {
 461                 // Bugfix, only send this numeric for *our* SSL users
 462                 if(dest->GetExt("ssl", dummy) || (IS_LOCAL(dest) &&  isin(dest->GetPort(), listenports)))
 463                 {
 464                         source->WriteServ("320 %s %s :is using a secure connection", source->nick, dest->nick);
 465                 }
 466         }
 467
 468         virtual void OnSyncUserMetaData(userrec* user, Module* proto, void* opaque, const std::string &extname)
 469         {
 470                 // check if the linking module wants to know about OUR metadata
 471                 if(extname == "ssl")
 472                 {
 473                         // check if this user has an swhois field to send
 474                         if(user->GetExt(extname, dummy))
 475                         {
 476                                 // call this function in the linking module, let it format the data how it
 477                                 // sees fit, and send it on its way. We dont need or want to know how.
 478                                 proto->ProtoSendMetaData(opaque, TYPE_USER, user, extname, "ON");
 479                         }
 480                 }
 481         }
 482
 483         virtual void OnDecodeMetaData(int target_type, void* target, const std::string &extname, const std::string &extdata)
 484         {
 485                 // check if its our metadata key, and its associated with a user
 486                 if ((target_type == TYPE_USER) && (extname == "ssl"))
 487                 {
 488                         userrec* dest = (userrec*)target;
 489                         // if they dont already have an ssl flag, accept the remote server's
 490                         if (!dest->GetExt(extname, dummy))
 491                         {
 492                                 dest->Extend(extname, "ON");
 493                         }
 494                 }
 495         }
 496
 497         bool Handshake(issl_session* session)
 498         {
 499                 int ret = gnutls_handshake(session->sess);
 500
 501       if(ret < 0)
 502                 {
 503                         if(ret == GNUTLS_E_AGAIN || ret == GNUTLS_E_INTERRUPTED)
 504                         {
 505                                 // Handshake needs resuming later, read() or write() would have blocked.
 506
 507                                 if(gnutls_record_get_direction(session->sess) == 0)
 508                                 {
 509                                         // gnutls_handshake() wants to read() again.
 510                                         session->status = ISSL_HANDSHAKING_READ;
 511                                         ServerInstance->Log(DEBUG, "m_ssl_gnutls.so: Handshake needs resuming (reading) later, error string: %s", gnutls_strerror(ret));
 512                                 }
 513                                 else
 514                                 {
 515                                         // gnutls_handshake() wants to write() again.
 516                                         session->status = ISSL_HANDSHAKING_WRITE;
 517                                         ServerInstance->Log(DEBUG, "m_ssl_gnutls.so: Handshake needs resuming (writing) later, error string: %s", gnutls_strerror(ret));
 518                                         MakePollWrite(session);
 519                                 }
 520                         }
 521                         else
 522                         {
 523                                 // Handshake failed.
 524                                 CloseSession(session);
 525                            ServerInstance->Log(DEBUG, "m_ssl_gnutls.so: Handshake failed, error string: %s", gnutls_strerror(ret));
 526                            session->status = ISSL_CLOSING;
 527                         }
 528
 529                         return false;
 530                 }
 531                 else
 532                 {
 533                         // Handshake complete.
 534                         ServerInstance->Log(DEBUG, "m_ssl_gnutls.so: Handshake completed");
 535
 536                         // This will do for setting the ssl flag...it could be done earlier if it's needed. But this seems neater.
 537                         userrec* extendme = ServerInstance->FindDescriptor(session->fd);
 538                         if (extendme)
 539                         {
 540                                 if (!extendme->GetExt("ssl", dummy))
 541                                         extendme->Extend("ssl", "ON");
 542                         }
 543
 544                         // Change the seesion state
 545                         session->status = ISSL_HANDSHAKEN;
 546
 547                         // Finish writing, if any left
 548                         MakePollWrite(session);
 549
 550                         return true;
 551                 }
 552         }
 553
 554         virtual void OnGlobalConnect(userrec* user)
 555         {
 556                 // This occurs AFTER OnUserConnect so we can be sure the
 557                 // protocol module has propogated the NICK message.
 558                 if ((user->GetExt("ssl", dummy)) && (IS_LOCAL(user)))
 559                 {
 560                         // Tell whatever protocol module we're using that we need to inform other servers of this metadata NOW.
 561                         std::deque<std::string>* metadata = new std::deque<std::string>;
 562                         metadata->push_back(user->nick);
 563                         metadata->push_back("ssl");             // The metadata id
 564                         metadata->push_back("ON");              // The value to send
 565                         Event* event = new Event((char*)metadata,(Module*)this,"send_metadata");
 566                         event->Send(ServerInstance);            // Trigger the event. We don't care what module picks it up.
 567                         DELETE(event);
 568                         DELETE(metadata);
 569                 }
 570         }
 571
 572         void MakePollWrite(issl_session* session)
 573         {
 574                 OnRawSocketWrite(session->fd, NULL, 0);
 575         }
 576
 577         void CloseSession(issl_session* session)
 578         {
 579                 if(session->sess)
 580                 {
 581                         gnutls_bye(session->sess, GNUTLS_SHUT_WR);
 582                         gnutls_deinit(session->sess);
 583                 }
 584
 585                 if(session->inbuf)
 586                 {
 587                         delete[] session->inbuf;
 588                 }
 589
 590                 session->outbuf.clear();
 591                 session->inbuf = NULL;
 592                 session->sess = NULL;
 593                 session->status = ISSL_NONE;
 594         }
 595 };
 596
 597 class ModuleSSLGnuTLSFactory : public ModuleFactory
 598 {
 599  public:
 600         ModuleSSLGnuTLSFactory()
 601         {
 602         }
 603
 604         ~ModuleSSLGnuTLSFactory()
 605         {
 606         }
 607
 608         virtual Module * CreateModule(InspIRCd* Me)
 609         {
 610                 return new ModuleSSLGnuTLS(Me);
 611         }
 612 };
 613
 614
 615 extern "C" void * init_module( void )
 616 {
 617         return new ModuleSSLGnuTLSFactory;
 618 }