src/modules/extra/m_ssl_openssl.cpp

   1 #include <string>
   2 #include <vector>
   3
   4 #include <openssl/ssl.h>
   5 #include <openssl/err.h>
   6
   7 #include "inspircd_config.h"
   8 #include "configreader.h"
   9 #include "users.h"
  10 #include "channels.h"
  11 #include "modules.h"
  12
  13 #include "socket.h"
  14 #include "hashcomp.h"
  15 #include "inspircd.h"
  16
  17 #include "ssl_cert.h"
  18
  19 /* $ModDesc: Provides SSL support for clients */
  20 /* $CompileFlags: -I/usr/include -I/usr/local/include */
  21 /* $LinkerFlags: -L/usr/local/lib -Wl,--rpath -Wl,/usr/local/lib -L/usr/lib -Wl,--rpath -Wl,/usr/lib -lssl */
  22
  23
  24
  25 enum issl_status { ISSL_NONE, ISSL_HANDSHAKING, ISSL_OPEN };
  26 enum issl_io_status { ISSL_WRITE, ISSL_READ };
  27
  28 bool isin(int port, const std::vector<int> &portlist)
  29 {
  30         for(unsigned int i = 0; i < portlist.size(); i++)
  31                 if(portlist[i] == port)
  32                         return true;
  33
  34         return false;
  35 }
  36
  37 char* get_error()
  38 {
  39         return ERR_error_string(ERR_get_error(), NULL);
  40 }
  41
  42 class issl_session : public classbase
  43 {
  44 public:
  45         SSL* sess;
  46         issl_status status;
  47         issl_io_status rstat;
  48         issl_io_status wstat;
  49
  50         unsigned int inbufoffset;
  51         char* inbuf;                    // Buffer OpenSSL reads into.
  52         std::string outbuf;     // Buffer for outgoing data that OpenSSL will not take.
  53         int fd;
  54
  55         issl_session()
  56         {
  57                 rstat = ISSL_READ;
  58                 wstat = ISSL_WRITE;
  59         }
  60 };
  61
  62 static int OnVerify(int preverify_ok, X509_STORE_CTX *ctx)
  63 {
  64         /* XXX: This will allow self signed certificates.
  65          * In the future if we want an option to not allow this,
  66          * we can just return preverify_ok here, and openssl
  67          * will boot off self-signed and invalid peer certs.
  68          */
  69         return 1;
  70 }
  71
  72 class ModuleSSLOpenSSL : public Module
  73 {
  74
  75         ConfigReader* Conf;
  76
  77         CullList* culllist;
  78
  79         std::vector<int> listenports;
  80
  81         int inbufsize;
  82         issl_session sessions[MAX_DESCRIPTORS];
  83
  84         SSL_CTX* ctx;
  85
  86         char* dummy;
  87
  88         std::string keyfile;
  89         std::string certfile;
  90         std::string cafile;
  91         // std::string crlfile;
  92         std::string dhfile;
  93
  94  public:
  95
  96         ModuleSSLOpenSSL(InspIRCd* Me)
  97                 : Module::Module(Me)
  98         {
  99                 culllist = new CullList(ServerInstance);
 100
 101                 // Not rehashable...because I cba to reduce all the sizes of existing buffers.
 102                 inbufsize = ServerInstance->Config->NetBufferSize;
 103
 104                 /* Global SSL library initialization*/
 105                 SSL_library_init();
 106                 SSL_load_error_strings();
 107
 108                 /* Build our SSL context*/
 109                 ctx = SSL_CTX_new( SSLv23_server_method() );
 110
 111                 SSL_CTX_set_verify(ctx, SSL_VERIFY_PEER | SSL_VERIFY_CLIENT_ONCE, OnVerify);
 112
 113                 // Needs the flag as it ignores a plain /rehash
 114                 OnRehash("ssl");
 115         }
 116
 117         virtual void OnRehash(const std::string &param)
 118         {
 119                 if(param != "ssl")
 120                         return;
 121
 122                 Conf = new ConfigReader(ServerInstance);
 123
 124                 for(unsigned int i = 0; i < listenports.size(); i++)
 125                 {
 126                         ServerInstance->Config->DelIOHook(listenports[i]);
 127                 }
 128
 129                 listenports.clear();
 130
 131                 for(int i = 0; i < Conf->Enumerate("bind"); i++)
 132                 {
 133                         // For each <bind> tag
 134                         if(((Conf->ReadValue("bind", "type", i) == "") || (Conf->ReadValue("bind", "type", i) == "clients")) && (Conf->ReadValue("bind", "ssl", i) == "openssl"))
 135                         {
 136                                 // Get the port we're meant to be listening on with SSL
 137                                 unsigned int port = Conf->ReadInteger("bind", "port", i, true);
 138                                 if (ServerInstance->Config->AddIOHook(port, this))
 139                                 {
 140                                         // We keep a record of which ports we're listening on with SSL
 141                                         listenports.push_back(port);
 142
 143                                         ServerInstance->Log(DEFAULT, "m_ssl_openssl.so: Enabling SSL for port %d", port);
 144                                 }
 145                                 else
 146                                 {
 147                                         ServerInstance->Log(DEFAULT, "m_ssl_openssl.so: FAILED to enable SSL on port %d, maybe you have another ssl or similar module loaded?", port);
 148                                 }
 149                         }
 150                 }
 151
 152                 std::string confdir(CONFIG_FILE);
 153                 // +1 so we the path ends with a /
 154                 confdir = confdir.substr(0, confdir.find_last_of('/') + 1);
 155
 156                 cafile  = Conf->ReadValue("openssl", "cafile", 0);
 157                 // crlfile      = Conf->ReadValue("openssl", "crlfile", 0);
 158                 certfile        = Conf->ReadValue("openssl", "certfile", 0);
 159                 keyfile = Conf->ReadValue("openssl", "keyfile", 0);
 160                 dhfile  = Conf->ReadValue("openssl", "dhfile", 0);
 161
 162                 // Set all the default values needed.
 163                 if(cafile == "")
 164                         cafile = "ca.pem";
 165
 166                 //if(crlfile == "")
 167                 //      crlfile = "crl.pem";
 168
 169                 if(certfile == "")
 170                         certfile = "cert.pem";
 171
 172                 if(keyfile == "")
 173                         keyfile = "key.pem";
 174
 175                 if(dhfile == "")
 176                         dhfile = "dhparams.pem";
 177
 178                 // Prepend relative paths with the path to the config directory.
 179                 if(cafile[0] != '/')
 180                         cafile = confdir + cafile;
 181
 182                 //if(crlfile[0] != '/')
 183                 //      crlfile = confdir + crlfile;
 184
 185                 if(certfile[0] != '/')
 186                         certfile = confdir + certfile;
 187
 188                 if(keyfile[0] != '/')
 189                         keyfile = confdir + keyfile;
 190
 191                 if(dhfile[0] != '/')
 192                         dhfile = confdir + dhfile;
 193
 194                 /* Load our keys and certificates*/
 195                 if(!SSL_CTX_use_certificate_chain_file(ctx, certfile.c_str()))
 196                 {
 197                         ServerInstance->Log(DEFAULT, "m_ssl_openssl.so: Can't read certificate file %s", certfile.c_str());
 198                 }
 199
 200                 if(!SSL_CTX_use_PrivateKey_file(ctx, keyfile.c_str(), SSL_FILETYPE_PEM))
 201                 {
 202                         ServerInstance->Log(DEFAULT, "m_ssl_openssl.so: Can't read key file %s", keyfile.c_str());
 203                 }
 204
 205                 /* Load the CAs we trust*/
 206                 if(!SSL_CTX_load_verify_locations(ctx, cafile.c_str(), 0))
 207                 {
 208                         ServerInstance->Log(DEFAULT, "m_ssl_openssl.so: Can't read CA list from ", cafile.c_str());
 209                 }
 210
 211                 FILE* dhpfile = fopen(dhfile.c_str(), "r");
 212                 DH* ret;
 213
 214                 if(dhpfile == NULL)
 215                 {
 216                         ServerInstance->Log(DEFAULT, "m_ssl_openssl.so Couldn't open DH file %s: %s", dhfile.c_str(), strerror(errno));
 217                         throw ModuleException();
 218                 }
 219                 else
 220                 {
 221                         ret = PEM_read_DHparams(dhpfile, NULL, NULL, NULL);
 222
 223                         if(SSL_CTX_set_tmp_dh(ctx, ret) < 0)
 224                         {
 225                                 ServerInstance->Log(DEFAULT, "m_ssl_openssl.so: Couldn't set DH parameters");
 226                         }
 227                 }
 228
 229                 fclose(dhpfile);
 230
 231                 DELETE(Conf);
 232         }
 233
 234         virtual ~ModuleSSLOpenSSL()
 235         {
 236                 SSL_CTX_free(ctx);
 237                 delete culllist;
 238         }
 239
 240         virtual void OnCleanup(int target_type, void* item)
 241         {
 242                 if(target_type == TYPE_USER)
 243                 {
 244                         userrec* user = (userrec*)item;
 245
 246                         if(user->GetExt("ssl", dummy) && IS_LOCAL(user) && isin(user->GetPort(), listenports))
 247                         {
 248                                 // User is using SSL, they're a local user, and they're using one of *our* SSL ports.
 249                                 // Potentially there could be multiple SSL modules loaded at once on different ports.
 250                                 ServerInstance->Log(DEBUG, "m_ssl_openssl.so: Adding user %s to cull list", user->nick);
 251                                 culllist->AddItem(user, "SSL module unloading");
 252                         }
 253                         if (user->GetExt("ssl_cert", dummy) && isin(user->GetPort(), listenports))
 254                         {
 255                                 ssl_cert* tofree;
 256                                 user->GetExt("ssl_cert", tofree);
 257                                 delete tofree;
 258                                 user->Shrink("ssl_cert");
 259                         }
 260                 }
 261         }
 262
 263         virtual void OnUnloadModule(Module* mod, const std::string &name)
 264         {
 265                 if(mod == this)
 266                 {
 267                         // We're being unloaded, kill all the users added to the cull list in OnCleanup
 268                         int numusers = culllist->Apply();
 269                         ServerInstance->Log(DEBUG, "m_ssl_openssl.so: Killed %d users for unload of OpenSSL SSL module", numusers);
 270
 271                         for(unsigned int i = 0; i < listenports.size(); i++)
 272                                 ServerInstance->Config->DelIOHook(listenports[i]);
 273                 }
 274         }
 275
 276         virtual Version GetVersion()
 277         {
 278                 return Version(1, 0, 0, 0, VF_VENDOR);
 279         }
 280
 281         void Implements(char* List)
 282         {
 283                 List[I_OnRawSocketAccept] = List[I_OnRawSocketClose] = List[I_OnRawSocketRead] = List[I_OnRawSocketWrite] = List[I_OnCleanup] = 1;
 284                 List[I_OnSyncUserMetaData] = List[I_OnDecodeMetaData] = List[I_OnUnloadModule] = List[I_OnRehash] = List[I_OnWhois] = List[I_OnPostConnect] = 1;
 285         }
 286
 287         virtual void OnRawSocketAccept(int fd, const std::string &ip, int localport)
 288         {
 289                 issl_session* session = &sessions[fd];
 290
 291                 session->fd = fd;
 292                 session->inbuf = new char[inbufsize];
 293                 session->inbufoffset = 0;
 294                 session->sess = SSL_new(ctx);
 295                 session->status = ISSL_NONE;
 296
 297                 if(session->sess == NULL)
 298                 {
 299                         ServerInstance->Log(DEBUG, "m_ssl.so: Couldn't create SSL object: %s", get_error());
 300                         return;
 301                 }
 302
 303                 if(SSL_set_fd(session->sess, fd) == 0)
 304                 {
 305                         ServerInstance->Log(DEBUG, "m_ssl.so: Couldn't set fd for SSL object: %s", get_error());
 306                         return;
 307                 }
 308
 309                 Handshake(session);
 310         }
 311
 312         virtual void OnRawSocketClose(int fd)
 313         {
 314                 ServerInstance->Log(DEBUG, "m_ssl_openssl.so: OnRawSocketClose: %d", fd);
 315                 CloseSession(&sessions[fd]);
 316         }
 317
 318         virtual int OnRawSocketRead(int fd, char* buffer, unsigned int count, int &readresult)
 319         {
 320                 issl_session* session = &sessions[fd];
 321
 322                 if(!session->sess)
 323                 {
 324                         ServerInstance->Log(DEBUG, "m_ssl_openssl.so: OnRawSocketRead: No session to read from");
 325                         readresult = 0;
 326                         CloseSession(session);
 327                         return 1;
 328                 }
 329
 330                 ServerInstance->Log(DEBUG, "m_ssl_openssl.so: OnRawSocketRead(%d, buffer, %u, %d)", fd, count, readresult);
 331
 332                 if(session->status == ISSL_HANDSHAKING)
 333                 {
 334                         if(session->rstat == ISSL_READ || session->wstat == ISSL_READ)
 335                         {
 336                                 // The handshake isn't finished and it wants to read, try to finish it.
 337                                 if(Handshake(session))
 338                                 {
 339                                         // Handshake successfully resumed.
 340                                         ServerInstance->Log(DEBUG, "m_ssl_openssl.so: OnRawSocketRead: successfully resumed handshake");
 341                                 }
 342                                 else
 343                                 {
 344                                         // Couldn't resume handshake.
 345                                         ServerInstance->Log(DEBUG, "m_ssl_openssl.so: OnRawSocketRead: failed to resume handshake");
 346                                         return -1;
 347                                 }
 348                         }
 349                         else
 350                         {
 351                                 ServerInstance->Log(DEBUG, "m_ssl_openssl.so: OnRawSocketRead: handshake wants to write data but we are currently reading");
 352                                 return -1;
 353                         }
 354                 }
 355
 356                 // If we resumed the handshake then session->status will be ISSL_OPEN
 357
 358                 if(session->status == ISSL_OPEN)
 359                 {
 360                         if(session->wstat == ISSL_READ)
 361                         {
 362                                 if(DoWrite(session) == 0)
 363                                         return 0;
 364                         }
 365
 366                         if(session->rstat == ISSL_READ)
 367                         {
 368                                 int ret = DoRead(session);
 369
 370                                 if(ret > 0)
 371                                 {
 372                                         if(count <= session->inbufoffset)
 373                                         {
 374                                                 memcpy(buffer, session->inbuf, count);
 375                                                 // Move the stuff left in inbuf to the beginning of it
 376                                                 memcpy(session->inbuf, session->inbuf + count, (session->inbufoffset - count));
 377                                                 // Now we need to set session->inbufoffset to the amount of data still waiting to be handed to insp.
 378                                                 session->inbufoffset -= count;
 379                                                 // Insp uses readresult as the count of how much data there is in buffer, so:
 380                                                 readresult = count;
 381                                         }
 382                                         else
 383                                         {
 384                                                 // There's not as much in the inbuf as there is space in the buffer, so just copy the whole thing.
 385                                                 memcpy(buffer, session->inbuf, session->inbufoffset);
 386
 387                                                 readresult = session->inbufoffset;
 388                                                 // Zero the offset, as there's nothing there..
 389                                                 session->inbufoffset = 0;
 390                                         }
 391
 392                                         return 1;
 393                                 }
 394                                 else
 395                                 {
 396                                         return ret;
 397                                 }
 398                         }
 399                 }
 400
 401                 return -1;
 402         }
 403
 404         virtual int OnRawSocketWrite(int fd, const char* buffer, int count)
 405         {
 406                 issl_session* session = &sessions[fd];
 407
 408                 if(!session->sess)
 409                 {
 410                         ServerInstance->Log(DEBUG, "m_ssl_openssl.so: OnRawSocketWrite: No session to write to");
 411                         CloseSession(session);
 412                         return 1;
 413                 }
 414
 415                 ServerInstance->Log(DEBUG, "m_ssl_openssl.so: OnRawSocketWrite: Adding %d bytes to the outgoing buffer", count);
 416                 session->outbuf.append(buffer, count);
 417
 418                 if(session->status == ISSL_HANDSHAKING)
 419                 {
 420                         // The handshake isn't finished, try to finish it.
 421                         if(session->rstat == ISSL_WRITE || session->wstat == ISSL_WRITE)
 422                         {
 423                                 if(Handshake(session))
 424                                 {
 425                                         // Handshake successfully resumed.
 426                                         ServerInstance->Log(DEBUG, "m_ssl_openssl.so: OnRawSocketWrite: successfully resumed handshake");
 427                                 }
 428                                 else
 429                                 {
 430                                         // Couldn't resume handshake.
 431                                         ServerInstance->Log(DEBUG, "m_ssl_openssl.so: OnRawSocketWrite: failed to resume handshake");
 432                                 }
 433                         }
 434                         else
 435                         {
 436                                 ServerInstance->Log(DEBUG, "m_ssl_openssl.so: OnRawSocketWrite: handshake wants to read data but we are currently writing");
 437                         }
 438                 }
 439
 440                 if(session->status == ISSL_OPEN)
 441                 {
 442                         if(session->rstat == ISSL_WRITE)
 443                         {
 444                                 DoRead(session);
 445                         }
 446
 447                         if(session->wstat == ISSL_WRITE)
 448                         {
 449                                 return DoWrite(session);
 450                         }
 451                 }
 452
 453                 return 1;
 454         }
 455
 456         int DoWrite(issl_session* session)
 457         {
 458                 int ret = SSL_write(session->sess, session->outbuf.data(), session->outbuf.size());
 459
 460                 if(ret == 0)
 461                 {
 462                         ServerInstance->Log(DEBUG, "m_ssl_openssl.so: DoWrite: Client closed the connection");
 463                         CloseSession(session);
 464                         return 0;
 465                 }
 466                 else if(ret < 0)
 467                 {
 468                         int err = SSL_get_error(session->sess, ret);
 469
 470                         if(err == SSL_ERROR_WANT_WRITE)
 471                         {
 472                                 ServerInstance->Log(DEBUG, "m_ssl_openssl.so: DoWrite: Not all SSL data written, need to retry: %s", get_error());
 473                                 session->wstat = ISSL_WRITE;
 474                                 return -1;
 475                         }
 476                         else if(err == SSL_ERROR_WANT_READ)
 477                         {
 478                                 ServerInstance->Log(DEBUG, "m_ssl_openssl.so: DoWrite: Not all SSL data written but the damn thing wants to read instead: %s", get_error());
 479                                 session->wstat = ISSL_READ;
 480                                 return -1;
 481                         }
 482                         else
 483                         {
 484                                 ServerInstance->Log(DEBUG, "m_ssl_openssl.so: DoWrite: Error writing SSL data: %s", get_error());
 485                                 CloseSession(session);
 486                                 return 0;
 487                         }
 488                 }
 489                 else
 490                 {
 491                         ServerInstance->Log(DEBUG, "m_ssl_openssl.so: DoWrite: Successfully wrote %d bytes", ret);
 492                         session->outbuf = session->outbuf.substr(ret);
 493                         return ret;
 494                 }
 495         }
 496
 497         int DoRead(issl_session* session)
 498         {
 499                 // Is this right? Not sure if the unencrypted data is garaunteed to be the same length.
 500                 // Read into the inbuffer, offset from the beginning by the amount of data we have that insp hasn't taken yet.
 501                 ServerInstance->Log(DEBUG, "m_ssl_openssl.so: DoRead: SSL_read(sess, inbuf+%d, %d-%d)", session->inbufoffset, inbufsize, session->inbufoffset);
 502
 503                 int ret = SSL_read(session->sess, session->inbuf + session->inbufoffset, inbufsize - session->inbufoffset);
 504
 505                 if(ret == 0)
 506                 {
 507                         // Client closed connection.
 508                         ServerInstance->Log(DEBUG, "m_ssl_openssl.so: DoRead: Client closed the connection");
 509                         CloseSession(session);
 510                         return 0;
 511                 }
 512                 else if(ret < 0)
 513                 {
 514                         int err = SSL_get_error(session->sess, ret);
 515
 516                         if(err == SSL_ERROR_WANT_READ)
 517                         {
 518                                 ServerInstance->Log(DEBUG, "m_ssl_openssl.so: DoRead: Not all SSL data read, need to retry: %s", get_error());
 519                                 session->rstat = ISSL_READ;
 520                                 return -1;
 521                         }
 522                         else if(err == SSL_ERROR_WANT_WRITE)
 523                         {
 524                                 ServerInstance->Log(DEBUG, "m_ssl_openssl.so: DoRead: Not all SSL data read but the damn thing wants to write instead: %s", get_error());
 525                                 session->rstat = ISSL_WRITE;
 526                                 return -1;
 527                         }
 528                         else
 529                         {
 530                                 ServerInstance->Log(DEBUG, "m_ssl_openssl.so: DoRead: Error reading SSL data: %s", get_error());
 531                                 CloseSession(session);
 532                                 return 0;
 533                         }
 534                 }
 535                 else
 536                 {
 537                         // Read successfully 'ret' bytes into inbuf + inbufoffset
 538                         // There are 'ret' + 'inbufoffset' bytes of data in 'inbuf'
 539                         // 'buffer' is 'count' long
 540
 541                         ServerInstance->Log(DEBUG, "m_ssl_openssl.so: DoRead: Read %d bytes, now have %d waiting to be passed up", ret, ret + session->inbufoffset);
 542
 543                         session->inbufoffset += ret;
 544
 545                         return ret;
 546                 }
 547         }
 548
 549         // :kenny.chatspike.net 320 Om Epy|AFK :is a Secure Connection
 550         virtual void OnWhois(userrec* source, userrec* dest)
 551         {
 552                 // Bugfix, only send this numeric for *our* SSL users
 553                 if(dest->GetExt("ssl", dummy) || (IS_LOCAL(dest) &&  isin(dest->GetPort(), listenports)))
 554                 {
 555                         source->WriteServ("320 %s %s :is using a secure connection", source->nick, dest->nick);
 556                 }
 557         }
 558
 559         virtual void OnSyncUserMetaData(userrec* user, Module* proto, void* opaque, const std::string &extname)
 560         {
 561                 // check if the linking module wants to know about OUR metadata
 562                 if(extname == "ssl")
 563                 {
 564                         // check if this user has an swhois field to send
 565                         if(user->GetExt(extname, dummy))
 566                         {
 567                                 // call this function in the linking module, let it format the data how it
 568                                 // sees fit, and send it on its way. We dont need or want to know how.
 569                                 proto->ProtoSendMetaData(opaque, TYPE_USER, user, extname, "ON");
 570                         }
 571                 }
 572         }
 573
 574         virtual void OnDecodeMetaData(int target_type, void* target, const std::string &extname, const std::string &extdata)
 575         {
 576                 // check if its our metadata key, and its associated with a user
 577                 if ((target_type == TYPE_USER) && (extname == "ssl"))
 578                 {
 579                         userrec* dest = (userrec*)target;
 580                         // if they dont already have an ssl flag, accept the remote server's
 581                         if (!dest->GetExt(extname, dummy))
 582                         {
 583                                 dest->Extend(extname, "ON");
 584                         }
 585                 }
 586         }
 587
 588         bool Handshake(issl_session* session)
 589         {
 590                 int ret = SSL_accept(session->sess);
 591
 592                 if(ret < 0)
 593                 {
 594                         int err = SSL_get_error(session->sess, ret);
 595
 596                         if(err == SSL_ERROR_WANT_READ)
 597                         {
 598                                 ServerInstance->Log(DEBUG, "m_ssl_openssl.so: Handshake: Not completed, need to read again: %s", get_error());
 599                                 session->rstat = ISSL_READ;
 600                                 session->status = ISSL_HANDSHAKING;
 601                         }
 602                         else if(err == SSL_ERROR_WANT_WRITE)
 603                         {
 604                                 ServerInstance->Log(DEBUG, "m_ssl_openssl.so: Handshake: Not completed, need to write more data: %s", get_error());
 605                                 session->wstat = ISSL_WRITE;
 606                                 session->status = ISSL_HANDSHAKING;
 607                                 MakePollWrite(session);
 608                         }
 609                         else
 610                         {
 611                                 ServerInstance->Log(DEBUG, "m_ssl_openssl.so: Handshake: Failed, bailing: %s", get_error());
 612                                 CloseSession(session);
 613                         }
 614
 615                         return false;
 616                 }
 617                 else
 618                 {
 619                         // Handshake complete.
 620                         ServerInstance->Log(DEBUG, "m_ssl_openssl.so: Handshake completed");
 621
 622                         // This will do for setting the ssl flag...it could be done earlier if it's needed. But this seems neater.
 623                         userrec* u = ServerInstance->FindDescriptor(session->fd);
 624                         if (u)
 625                         {
 626                                 if (!u->GetExt("ssl", dummy))
 627                                         u->Extend("ssl", "ON");
 628                         }
 629
 630                         session->status = ISSL_OPEN;
 631
 632                         MakePollWrite(session);
 633
 634                         return true;
 635                 }
 636         }
 637
 638         virtual void OnPostConnect(userrec* user)
 639         {
 640                 // This occurs AFTER OnUserConnect so we can be sure the
 641                 // protocol module has propogated the NICK message.
 642                 if ((user->GetExt("ssl", dummy)) && (IS_LOCAL(user)))
 643                 {
 644                         // Tell whatever protocol module we're using that we need to inform other servers of this metadata NOW.
 645                         std::deque<std::string>* metadata = new std::deque<std::string>;
 646                         metadata->push_back(user->nick);
 647                         metadata->push_back("ssl");             // The metadata id
 648                         metadata->push_back("ON");              // The value to send
 649                         Event* event = new Event((char*)metadata,(Module*)this,"send_metadata");
 650                         event->Send(ServerInstance);            // Trigger the event. We don't care what module picks it up.
 651                         DELETE(event);
 652                         DELETE(metadata);
 653
 654                         VerifyCertificate(&sessions[user->GetFd()], user);
 655                 }
 656         }
 657
 658         void MakePollWrite(issl_session* session)
 659         {
 660                 OnRawSocketWrite(session->fd, NULL, 0);
 661         }
 662
 663         void CloseSession(issl_session* session)
 664         {
 665                 if(session->sess)
 666                 {
 667                         SSL_shutdown(session->sess);
 668                         SSL_free(session->sess);
 669                 }
 670
 671                 if(session->inbuf)
 672                 {
 673                         delete[] session->inbuf;
 674                 }
 675
 676                 session->outbuf.clear();
 677                 session->inbuf = NULL;
 678                 session->sess = NULL;
 679                 session->status = ISSL_NONE;
 680         }
 681
 682         void VerifyCertificate(issl_session* session, userrec* user)
 683         {
 684                 X509* cert;
 685                 ssl_cert* certinfo = new ssl_cert;
 686                 unsigned int n;
 687                 unsigned char md[EVP_MAX_MD_SIZE];
 688                 const EVP_MD *digest = EVP_md5();
 689                 //char* buf;
 690
 691                 user->Extend("ssl_cert",certinfo);
 692
 693                 cert = SSL_get_peer_certificate((SSL*)session->sess);
 694
 695                 if (!cert)
 696                 {
 697                         certinfo->data.insert(std::make_pair("error","Could not get peer certificate: "+std::string(get_error())));
 698                         return;
 699                 }
 700
 701                 /*if (!X509_verify_cert(cert))
 702                 {
 703                         certinfo->data.insert(std::make_pair("invalid",ConvToStr(1)));
 704                 }
 705                 else
 706                 {
 707                         certinfo->data.insert(std::make_pair("invalid",ConvToStr(0)));
 708                 }*/
 709
 710                 //X509_NAME_oneline(nm, 0, 0);
 711                 certinfo->data.insert(std::make_pair("dn",std::string(X509_NAME_oneline(X509_get_subject_name(cert),0,0))));
 712                 certinfo->data.insert(std::make_pair("issuer",std::string(X509_NAME_oneline(X509_get_issuer_name(cert),0,0))));
 713
 714                 if (!X509_digest(cert, digest, md, &n))
 715                 {
 716                         certinfo->data.insert(std::make_pair("error","Out of memory generating fingerprint"));
 717                 }
 718                 else
 719                 {
 720                         certinfo->data.insert(std::make_pair("fingerprint",irc::hex(md, n)));
 721                 }
 722
 723                 if ((ASN1_UTCTIME_cmp_time_t(X509_get_notAfter(cert), time(NULL)) == -1) || (ASN1_UTCTIME_cmp_time_t(X509_get_notBefore(cert), time(NULL)) == 0))
 724                 {
 725                         certinfo->data.insert(std::make_pair("error","Not activated, or expired certificate"));
 726                 }
 727         }
 728 };
 729
 730 class ModuleSSLOpenSSLFactory : public ModuleFactory
 731 {
 732  public:
 733         ModuleSSLOpenSSLFactory()
 734         {
 735         }
 736
 737         ~ModuleSSLOpenSSLFactory()
 738         {
 739         }
 740
 741         virtual Module * CreateModule(InspIRCd* Me)
 742         {
 743                 return new ModuleSSLOpenSSL(Me);
 744         }
 745 };
 746
 747
 748 extern "C" void * init_module( void )
 749 {
 750         return new ModuleSSLOpenSSLFactory;
 751 }