| Adam Tkac | dfe19cf | 2010-04-23 14:14:11 +0000 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2004 Red Hat Inc. |
| 3 | * Copyright (C) 2005 Martin Koegler |
| 4 | * Copyright (C) 2010 TigerVNC Team |
| 5 | * |
| 6 | * This is free software; you can redistribute it and/or modify |
| 7 | * it under the terms of the GNU General Public License as published by |
| 8 | * the Free Software Foundation; either version 2 of the License, or |
| 9 | * (at your option) any later version. |
| 10 | * |
| 11 | * This software is distributed in the hope that it will be useful, |
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | * GNU General Public License for more details. |
| 15 | * |
| 16 | * You should have received a copy of the GNU General Public License |
| 17 | * along with this software; if not, write to the Free Software |
| 18 | * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, |
| 19 | * USA. |
| 20 | */ |
| 21 | |
| 22 | #ifdef HAVE_CONFIG_H |
| 23 | #include <config.h> |
| 24 | #endif |
| 25 | |
| 26 | #ifdef HAVE_GNUTLS |
| 27 | |
| 28 | #include <rfb/SSecurityTLS.h> |
| 29 | #include <rfb/Exception.h> |
| 30 | |
| 31 | #define DH_BITS 1024 |
| 32 | |
| 33 | #undef TLS_DEBUG |
| 34 | |
| 35 | using namespace rfb; |
| 36 | |
| 37 | SSecurityTLS::SSecurityTLS() : dh_params(0), anon_cred(0) |
| 38 | { |
| 39 | } |
| 40 | |
| 41 | SSecurityTLS::~SSecurityTLS() |
| 42 | { |
| 43 | shutdown(); |
| 44 | if (dh_params) |
| 45 | gnutls_dh_params_deinit(dh_params); |
| 46 | if (anon_cred) |
| 47 | gnutls_anon_free_server_credentials(anon_cred); |
| 48 | } |
| 49 | |
| 50 | void SSecurityTLS::freeResources() |
| 51 | { |
| 52 | if (dh_params) |
| 53 | gnutls_dh_params_deinit(dh_params); |
| 54 | dh_params = 0; |
| 55 | if (anon_cred) |
| 56 | gnutls_anon_free_server_credentials(anon_cred); |
| 57 | anon_cred = 0; |
| 58 | } |
| 59 | |
| 60 | void SSecurityTLS::setParams(gnutls_session session) |
| 61 | { |
| 62 | static const int kx_priority[] = {GNUTLS_KX_ANON_DH, 0}; |
| 63 | gnutls_kx_set_priority(session, kx_priority); |
| 64 | |
| 65 | if (gnutls_anon_allocate_server_credentials(&anon_cred) != GNUTLS_E_SUCCESS) |
| 66 | throw AuthFailureException("gnutls_anon_allocate_server_credentials failed"); |
| 67 | |
| 68 | if (gnutls_dh_params_init(&dh_params) != GNUTLS_E_SUCCESS) |
| 69 | throw AuthFailureException("gnutls_dh_params_init failed"); |
| 70 | |
| 71 | if (gnutls_dh_params_generate2(dh_params, DH_BITS) != GNUTLS_E_SUCCESS) |
| 72 | throw AuthFailureException("gnutls_dh_params_generate2 failed"); |
| 73 | |
| 74 | gnutls_anon_set_server_dh_params(anon_cred, dh_params); |
| 75 | |
| 76 | if (gnutls_credentials_set(session, GNUTLS_CRD_ANON, anon_cred) |
| 77 | != GNUTLS_E_SUCCESS) |
| 78 | throw AuthFailureException("gnutls_credentials_set failed"); |
| 79 | |
| 80 | } |
| 81 | |
| 82 | #endif /* HAVE_GNUTLS */ |