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/* |
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* Copyright (C) 2002 Nikos Mavroyanopoulos |
| 3 |
* |
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* This file is part of Hydra webserver. |
| 5 |
* |
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* Hydra 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. |
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* |
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* Hydra 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. |
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* |
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* You should have received a copy of the GNU General Public License |
| 17 |
* along with this program; if not, write to the Free Software |
| 18 |
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA |
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*/ |
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|
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#include <stdio.h> |
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#include <stdlib.h> |
| 23 |
#include <string.h> |
| 24 |
#include "boa.h" |
| 25 |
|
| 26 |
#ifdef ENABLE_SSL |
| 27 |
|
| 28 |
#include "ssl.h" |
| 29 |
|
| 30 |
#include <gnutls/gnutls.h> |
| 31 |
#include <gcrypt.h> |
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|
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#ifdef ENABLE_SMP |
| 34 |
pthread_mutex_t ssl_session_cache_lock = PTHREAD_MUTEX_INITIALIZER; |
| 35 |
#endif |
| 36 |
|
| 37 |
extern int ssl_session_cache; |
| 38 |
extern int ssl_session_timeout; |
| 39 |
|
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extern char* ssl_ciphers; |
| 41 |
extern char* ssl_kx; |
| 42 |
extern char* ssl_mac; |
| 43 |
extern char* ssl_comp; |
| 44 |
extern char* ssl_protocol; |
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extern int ssl_verify; /* 0 no verify, 1 request certificate, and validate |
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* if sent, 2 require certificate and validate. |
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* 3 is request one, and try to verify it. Does not fail in |
| 48 |
* any case. |
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*/ |
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|
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static void wrap_db_init(void); |
| 52 |
static int wrap_db_store(void *dbf, gnutls_datum key, gnutls_datum data); |
| 53 |
static gnutls_datum wrap_db_fetch(void *dbf, gnutls_datum key); |
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static int wrap_db_delete(void *dbf, gnutls_datum key); |
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|
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static int cur = 0; /* points to the credentials structure used */ |
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static gnutls_certificate_credentials credentials[2]; |
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|
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static int need_dh_params = 0; /* whether we need to generate DHE |
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* parameters. Depend on the chosen ciphersuites. |
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*/ |
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static int need_rsa_params = 0; |
| 63 |
|
| 64 |
|
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/* we use primes up to 1024 in this server. |
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* otherwise we should add them here. |
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*/ |
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extern int ssl_dh_bits; |
| 69 |
|
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gnutls_dh_params _dh_params[2]; |
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gnutls_rsa_params _rsa_params[2]; |
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|
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static int generate_dh_primes( gnutls_dh_params* dh_params) |
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{ |
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gnutls_datum prime, generator; |
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|
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if (gnutls_dh_params_init( dh_params) < 0) { |
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log_error_time(); |
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fprintf(stderr, "Error in dh parameter initialization\n"); |
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exit(1); |
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} |
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|
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/* Generate Diffie Hellman parameters - for use with DHE |
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* kx algorithms. These should be discarded and regenerated |
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* once a day, once a week or once a month. Depends on the |
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* security requirements. |
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*/ |
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|
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if (gnutls_dh_params_generate(&prime, &generator, ssl_dh_bits) < |
| 90 |
0) { |
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log_error_time(); |
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fprintf(stderr, "Error in prime generation\n"); |
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exit(1); |
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} |
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|
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if (gnutls_dh_params_set |
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(*dh_params, prime, generator, ssl_dh_bits) < 0) { |
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log_error_time(); |
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fprintf(stderr, "Error in prime replacement\n"); |
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exit(1); |
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} |
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|
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log_error_time(); |
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fprintf |
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(stderr, |
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"tls: Generated Diffie Hellman parameters [%d bits].\n", |
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ssl_dh_bits); |
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|
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free(prime.data); |
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free(generator.data); |
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|
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return 0; |
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} |
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|
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static int generate_rsa_params( gnutls_rsa_params* rsa_params) |
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{ |
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gnutls_datum m, e, d, p, q, u; |
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|
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if (gnutls_rsa_params_init( rsa_params) < 0) { |
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log_error_time(); |
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fprintf(stderr, "Error in rsa parameter initialization\n"); |
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exit(1); |
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} |
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|
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/* Generate RSA parameters - for use with RSA-export |
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* cipher suites. These should be discarded and regenerated |
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* once a day, once every 500 transactions etc. Depends on the |
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* security requirements. |
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*/ |
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|
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if (gnutls_rsa_params_generate(&m, &e, &d, &p, &q, &u, 512) < 0) { |
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log_error_time(); |
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fprintf(stderr, "Error in rsa parameter generation\n"); |
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exit(1); |
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} |
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|
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if (gnutls_rsa_params_set( *rsa_params, m, e, d, p, q, u, 512) < 0) { |
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log_error_time(); |
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fprintf(stderr, "Error in rsa parameter setting\n"); |
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exit(1); |
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} |
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|
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free(m.data); |
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free(e.data); |
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free(d.data); |
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free(p.data); |
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free(q.data); |
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free(u.data); |
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|
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log_error_time(); |
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fprintf |
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(stderr, "tls: Generated temporary RSA parameters.\n"); |
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|
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return 0; |
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} |
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|
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static int protocol_priority[16]; |
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static int kx_priority[16]; |
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static int cipher_priority[16]; |
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static int mac_priority[16]; |
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static int comp_priority[16]; |
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|
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/* Parses a string in the form: |
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* CIPHER1, CIPHER2, ... |
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* and tries to find the given algorithm. |
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* Returns true or false. |
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*/ |
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static int parse_cs_string( const char* string, const char* algo) |
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{ |
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if (string == NULL || algo == NULL) return 0; |
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|
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if (strstr( string, algo) != NULL) |
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return 1; |
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|
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return 0; |
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|
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} |
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|
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gnutls_session initialize_ssl_session(void) |
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{ |
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GNUTLS_STATE state; |
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|
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gnutls_init(&state, GNUTLS_SERVER); |
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|
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gnutls_cipher_set_priority(state, cipher_priority); |
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gnutls_compression_set_priority(state, comp_priority); |
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gnutls_kx_set_priority(state, kx_priority); |
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gnutls_protocol_set_priority(state, protocol_priority); |
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gnutls_mac_set_priority(state, mac_priority); |
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|
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gnutls_cred_set(state, GNUTLS_CRD_CERTIFICATE, credentials[ cur]); |
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|
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gnutls_certificate_server_set_request(state, GNUTLS_CERT_IGNORE); |
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|
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if (ssl_session_cache != 0) { |
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gnutls_db_set_retrieve_function(state, wrap_db_fetch); |
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gnutls_db_set_remove_function(state, wrap_db_delete); |
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gnutls_db_set_store_function(state, wrap_db_store); |
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gnutls_db_set_ptr(state, NULL); |
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} |
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gnutls_db_set_cache_expiration( state, ssl_session_timeout); |
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|
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gnutls_handshake_set_private_extensions( state, 1); |
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|
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if (ssl_verify == 1 || ssl_verify == 3) { |
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gnutls_certificate_server_set_request( state, GNUTLS_CERT_REQUEST); |
| 207 |
} else if (ssl_verify == 2) { |
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gnutls_certificate_server_set_request( state, GNUTLS_CERT_REQUIRE); |
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} |
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|
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return state; |
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} |
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|
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extern char *ca_cert; |
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extern char *server_cert; |
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extern char *server_key; |
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|
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/* Initialization of gnutls' global state |
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*/ |
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int initialize_ssl(void) |
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{ |
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int i; |
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|
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gnutls_global_init(); |
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/* gcry_control (GCRYCTL_DISABLE_INTERNAL_LOCKING, NULL, 0); */ |
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|
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if (gnutls_certificate_allocate_credentials( &credentials[0]) < 0) { |
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log_error_time(); |
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fprintf(stderr, "certificate allocation error\n"); |
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exit(1); |
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} |
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|
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if (gnutls_certificate_set_x509_key_file |
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( credentials[0], server_cert, server_key, GNUTLS_X509_FMT_PEM) < 0) { |
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log_error_time(); |
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fprintf(stderr, "could not find %s or %s\n", server_cert, |
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server_key); |
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exit(1); |
| 239 |
} |
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|
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if (ca_cert != NULL && gnutls_certificate_set_x509_trust_file |
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( credentials[0], ca_cert, GNUTLS_X509_FMT_PEM) < 0) { |
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log_error_time(); |
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fprintf(stderr, "could not find %s\n", ca_cert); |
| 245 |
exit(1); |
| 246 |
} |
| 247 |
|
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if (ssl_session_cache != 0) |
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wrap_db_init(); |
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|
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/* Add ciphers |
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*/ |
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i = 0; |
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if ( parse_cs_string( ssl_ciphers, "AES") != 0) |
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cipher_priority[i++] = GNUTLS_CIPHER_RIJNDAEL_128_CBC; |
| 256 |
if ( parse_cs_string( ssl_ciphers, "ARCFOUR-128") != 0) |
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cipher_priority[i++] = GNUTLS_CIPHER_ARCFOUR_128; |
| 258 |
if ( parse_cs_string( ssl_ciphers, "3DES") != 0) |
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cipher_priority[i++] = GNUTLS_CIPHER_3DES_CBC; |
| 260 |
if ( parse_cs_string( ssl_ciphers, "ARCFOUR-40") != 0) |
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cipher_priority[i++] = GNUTLS_CIPHER_ARCFOUR_40; |
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cipher_priority[i] = 0; |
| 263 |
|
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/* Add key exchange methods |
| 265 |
*/ |
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i = 0; |
| 267 |
if ( parse_cs_string( ssl_kx, "RSA") != 0) |
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kx_priority[i++] = GNUTLS_KX_RSA; |
| 269 |
if ( parse_cs_string( ssl_kx, "RSA-EXPORT") != 0) { |
| 270 |
kx_priority[i++] = GNUTLS_KX_RSA_EXPORT; |
| 271 |
need_rsa_params = 1; |
| 272 |
} |
| 273 |
if ( parse_cs_string( ssl_kx, "DHE-RSA") != 0) { |
| 274 |
kx_priority[i++] = GNUTLS_KX_DHE_RSA; |
| 275 |
need_dh_params = 1; /* generate DH parameters */ |
| 276 |
} |
| 277 |
if ( parse_cs_string( ssl_kx, "DHE-DSS") != 0) { |
| 278 |
kx_priority[i++] = GNUTLS_KX_DHE_DSS; |
| 279 |
need_dh_params = 1; |
| 280 |
} |
| 281 |
kx_priority[i] = 0; |
| 282 |
|
| 283 |
/* Add MAC Algorithms |
| 284 |
*/ |
| 285 |
i = 0; |
| 286 |
if ( parse_cs_string( ssl_mac, "MD5") != 0) |
| 287 |
mac_priority[i++] = GNUTLS_MAC_MD5; |
| 288 |
if ( parse_cs_string( ssl_mac, "SHA") != 0) |
| 289 |
mac_priority[i++] = GNUTLS_MAC_SHA; |
| 290 |
mac_priority[i] = 0; |
| 291 |
|
| 292 |
/* Add Compression algorithms |
| 293 |
*/ |
| 294 |
i = 0; |
| 295 |
if ( parse_cs_string( ssl_comp, "NULL") != 0) |
| 296 |
comp_priority[i++] = GNUTLS_COMP_NULL; |
| 297 |
if ( parse_cs_string( ssl_comp, "ZLIB") != 0) |
| 298 |
comp_priority[i++] = GNUTLS_COMP_ZLIB; |
| 299 |
if ( parse_cs_string( ssl_comp, "LZO") != 0) |
| 300 |
comp_priority[i++] = GNUTLS_COMP_LZO; |
| 301 |
comp_priority[i] = 0; |
| 302 |
|
| 303 |
/* Add protocols |
| 304 |
*/ |
| 305 |
i = 0; |
| 306 |
if ( parse_cs_string( ssl_protocol, "TLS") != 0) |
| 307 |
protocol_priority[i++] = GNUTLS_TLS1; |
| 308 |
if ( parse_cs_string( ssl_protocol, "SSL") != 0) |
| 309 |
protocol_priority[i++] = GNUTLS_SSL3; |
| 310 |
protocol_priority[i] = 0; |
| 311 |
|
| 312 |
/* Generate temporary parameters -- if needed. |
| 313 |
*/ |
| 314 |
if (need_rsa_params) { |
| 315 |
generate_rsa_params( &_rsa_params[0]); |
| 316 |
gnutls_certificate_set_rsa_params(credentials[0], _rsa_params[0]); |
| 317 |
} |
| 318 |
|
| 319 |
if (need_dh_params) { |
| 320 |
generate_dh_primes( &_dh_params[0]); |
| 321 |
gnutls_certificate_set_dh_params(credentials[0], _dh_params[0]); |
| 322 |
} |
| 323 |
|
| 324 |
return 0; |
| 325 |
} |
| 326 |
|
| 327 |
/* This function will regenerate the SSL parameters (RSA and DH) without |
| 328 |
* any need for downtime. |
| 329 |
*/ |
| 330 |
void ssl_regenerate_params(void) |
| 331 |
{ |
| 332 |
int _cur = (cur + 1) % 2; |
| 333 |
|
| 334 |
/* The hint here, is that we keep a copy of 2 certificate credentials. |
| 335 |
* When we come here, we free the unused copy and allocate new |
| 336 |
* parameters to it. Then we make the current copy to be this copy. |
| 337 |
* |
| 338 |
* We don't free the previous copy because we don't know if anyone |
| 339 |
* is using it. (this has to be fixed) |
| 340 |
*/ |
| 341 |
|
| 342 |
time(¤t_time); |
| 343 |
|
| 344 |
if ( !credentials[_cur]) { |
| 345 |
if (gnutls_certificate_allocate_credentials( &credentials[ _cur]) < 0) { |
| 346 |
log_error_time(); |
| 347 |
fprintf(stderr, "certificate allocation error\n"); |
| 348 |
exit(1); |
| 349 |
} |
| 350 |
|
| 351 |
if (gnutls_certificate_set_x509_key_file |
| 352 |
( credentials[_cur], server_cert, server_key, GNUTLS_X509_FMT_PEM) < 0) { |
| 353 |
log_error_time(); |
| 354 |
fprintf(stderr, "could not find %s or %s", server_cert, |
| 355 |
server_key); |
| 356 |
exit(1); |
| 357 |
} |
| 358 |
|
| 359 |
if (ca_cert!=NULL && gnutls_certificate_set_x509_trust_file |
| 360 |
( credentials[_cur], ca_cert, GNUTLS_X509_FMT_PEM) < 0) { |
| 361 |
log_error_time(); |
| 362 |
fprintf(stderr, "could not find %s\n", ca_cert); |
| 363 |
exit(1); |
| 364 |
} |
| 365 |
} |
| 366 |
|
| 367 |
if (need_rsa_params) { |
| 368 |
gnutls_rsa_params_deinit( _rsa_params[ _cur]); |
| 369 |
generate_rsa_params( &_rsa_params[ _cur]); |
| 370 |
gnutls_certificate_set_rsa_params(credentials[_cur], _rsa_params[ _cur]); |
| 371 |
} |
| 372 |
|
| 373 |
if (need_dh_params) { |
| 374 |
gnutls_dh_params_deinit( _dh_params[ _cur]); |
| 375 |
generate_dh_primes( &_dh_params[ _cur]); |
| 376 |
gnutls_certificate_set_dh_params(credentials[_cur], _dh_params[ _cur]); |
| 377 |
} |
| 378 |
|
| 379 |
cur = _cur; |
| 380 |
|
| 381 |
return; |
| 382 |
} |
| 383 |
|
| 384 |
|
| 385 |
/* Session resuming: |
| 386 |
*/ |
| 387 |
|
| 388 |
#define SESSION_ID_SIZE 32 |
| 389 |
#define SESSION_DATA_SIZE 512 |
| 390 |
|
| 391 |
typedef struct { |
| 392 |
char session_id[SESSION_ID_SIZE]; |
| 393 |
int session_id_size; |
| 394 |
|
| 395 |
char session_data[SESSION_DATA_SIZE]; |
| 396 |
int session_data_size; |
| 397 |
} CACHE; |
| 398 |
|
| 399 |
static CACHE *cache_db; |
| 400 |
static int cache_db_ptr; |
| 401 |
|
| 402 |
static void wrap_db_init(void) |
| 403 |
{ |
| 404 |
|
| 405 |
/* allocate cache_db */ |
| 406 |
cache_db = calloc(1, ssl_session_cache * sizeof(CACHE)); |
| 407 |
} |
| 408 |
|
| 409 |
static int wrap_db_store(void *dbf, gnutls_datum key, gnutls_datum data) |
| 410 |
{ |
| 411 |
|
| 412 |
if (cache_db == NULL) |
| 413 |
return -1; |
| 414 |
|
| 415 |
if (key.size > SESSION_ID_SIZE) |
| 416 |
return -1; |
| 417 |
if (data.size > SESSION_DATA_SIZE) |
| 418 |
return -1; |
| 419 |
|
| 420 |
#ifdef ENABLE_SMP |
| 421 |
pthread_mutex_lock( &ssl_session_cache_lock); |
| 422 |
#endif |
| 423 |
|
| 424 |
memcpy(cache_db[cache_db_ptr].session_id, key.data, key.size); |
| 425 |
cache_db[cache_db_ptr].session_id_size = key.size; |
| 426 |
|
| 427 |
memcpy(cache_db[cache_db_ptr].session_data, data.data, data.size); |
| 428 |
cache_db[cache_db_ptr].session_data_size = data.size; |
| 429 |
|
| 430 |
cache_db_ptr++; |
| 431 |
cache_db_ptr %= ssl_session_cache; |
| 432 |
|
| 433 |
#ifdef ENABLE_SMP |
| 434 |
pthread_mutex_unlock( &ssl_session_cache_lock); |
| 435 |
#endif |
| 436 |
|
| 437 |
return 0; |
| 438 |
} |
| 439 |
|
| 440 |
static gnutls_datum wrap_db_fetch(void *dbf, gnutls_datum key) |
| 441 |
{ |
| 442 |
gnutls_datum res = { NULL, 0 }; |
| 443 |
int i; |
| 444 |
|
| 445 |
if (cache_db == NULL) |
| 446 |
return res; |
| 447 |
|
| 448 |
#ifdef ENABLE_SMP |
| 449 |
pthread_mutex_lock( &ssl_session_cache_lock); |
| 450 |
#endif |
| 451 |
|
| 452 |
for (i = 0; i < ssl_session_cache; i++) { |
| 453 |
if (key.size == cache_db[i].session_id_size && |
| 454 |
memcmp(key.data, cache_db[i].session_id, key.size) == 0) { |
| 455 |
|
| 456 |
res.size = cache_db[i].session_data_size; |
| 457 |
|
| 458 |
res.data = malloc(res.size); |
| 459 |
if (res.data == NULL) { |
| 460 |
#ifdef ENABLE_SMP |
| 461 |
pthread_mutex_unlock( &ssl_session_cache_lock); |
| 462 |
#endif |
| 463 |
return res; |
| 464 |
} |
| 465 |
|
| 466 |
memcpy(res.data, cache_db[i].session_data, res.size); |
| 467 |
|
| 468 |
#ifdef ENABLE_SMP |
| 469 |
pthread_mutex_unlock( &ssl_session_cache_lock); |
| 470 |
#endif |
| 471 |
return res; |
| 472 |
} |
| 473 |
} |
| 474 |
|
| 475 |
#ifdef ENABLE_SMP |
| 476 |
pthread_mutex_unlock( &ssl_session_cache_lock); |
| 477 |
#endif |
| 478 |
|
| 479 |
return res; |
| 480 |
} |
| 481 |
|
| 482 |
static int wrap_db_delete(void *dbf, gnutls_datum key) |
| 483 |
{ |
| 484 |
int i; |
| 485 |
|
| 486 |
if (cache_db == NULL) |
| 487 |
return -1; |
| 488 |
|
| 489 |
#ifdef ENABLE_SMP |
| 490 |
pthread_mutex_lock( &ssl_session_cache_lock); |
| 491 |
#endif |
| 492 |
|
| 493 |
for (i = 0; i < ssl_session_cache; i++) { |
| 494 |
if (key.size == cache_db[i].session_id_size && |
| 495 |
memcmp(key.data, cache_db[i].session_id, key.size) == 0) { |
| 496 |
|
| 497 |
cache_db[i].session_id_size = 0; |
| 498 |
cache_db[i].session_data_size = 0; |
| 499 |
|
| 500 |
#ifdef ENABLE_SMP |
| 501 |
pthread_mutex_unlock( &ssl_session_cache_lock); |
| 502 |
#endif |
| 503 |
|
| 504 |
return 0; |
| 505 |
} |
| 506 |
} |
| 507 |
|
| 508 |
#ifdef ENABLE_SMP |
| 509 |
pthread_mutex_unlock( &ssl_session_cache_lock); |
| 510 |
#endif |
| 511 |
return -1; |
| 512 |
|
| 513 |
} |
| 514 |
|
| 515 |
void check_ssl_alert( request* req, int ret) |
| 516 |
{ |
| 517 |
int last_alert; |
| 518 |
|
| 519 |
if (ret == GNUTLS_E_WARNING_ALERT_RECEIVED || ret == GNUTLS_E_FATAL_ALERT_RECEIVED) |
| 520 |
{ |
| 521 |
last_alert = gnutls_alert_get(req->ssl_state); |
| 522 |
log_error_doc(req); |
| 523 |
fprintf(stderr, "Received alert \"%s\".\n", gnutls_alert_get_name(ret)); |
| 524 |
} |
| 525 |
} |
| 526 |
|
| 527 |
int finish_handshake(request * current) |
| 528 |
{ |
| 529 |
int retval; |
| 530 |
|
| 531 |
retval = gnutls_handshake(current->ssl_state); |
| 532 |
|
| 533 |
if (retval == GNUTLS_E_AGAIN) |
| 534 |
retval = -1; |
| 535 |
else if (retval == GNUTLS_E_INTERRUPTED) |
| 536 |
retval = 1; |
| 537 |
else if (retval < 0) { |
| 538 |
if (gnutls_error_is_fatal(retval) != 0) { |
| 539 |
log_error_doc(current); |
| 540 |
fprintf(stderr, "TLS handshake error \"%s\"\n", gnutls_strerror(retval)); |
| 541 |
check_ssl_alert( current, retval); |
| 542 |
|
| 543 |
/* we ignore the level of the alert, since we always |
| 544 |
* send fatal alerts. |
| 545 |
*/ |
| 546 |
current->alert_to_send = gnutls_error_to_alert( retval, NULL); |
| 547 |
if (current->alert_to_send >= 0) { |
| 548 |
current->status = SEND_ALERT; |
| 549 |
} |
| 550 |
retval = 1; |
| 551 |
} else { |
| 552 |
check_ssl_alert( current, retval); |
| 553 |
retval = 1; |
| 554 |
} |
| 555 |
} else if (retval == 0) { |
| 556 |
|
| 557 |
if (ssl_verify >= 1) { |
| 558 |
int verify; |
| 559 |
char name[128]; |
| 560 |
const gnutls_datum *cert_list; |
| 561 |
int cert_list_size; |
| 562 |
|
| 563 |
|
| 564 |
verify = gnutls_certificate_verify_peers( current->ssl_state); |
| 565 |
current->certificate_verified = "NONE"; |
| 566 |
|
| 567 |
if (verify != GNUTLS_E_NO_CERTIFICATE_FOUND || ssl_verify == 2) { |
| 568 |
cert_list = |
| 569 |
gnutls_certificate_get_peers(current->ssl_state, &cert_list_size); |
| 570 |
|
| 571 |
if (cert_list) |
| 572 |
generate_x509_dn( name, sizeof(name), &cert_list[0], 0); |
| 573 |
|
| 574 |
log_error_time(); |
| 575 |
if (verify & GNUTLS_CERT_NOT_TRUSTED || verify & GNUTLS_CERT_INVALID || |
| 576 |
verify & GNUTLS_CERT_CORRUPTED || verify & GNUTLS_CERT_REVOKED) |
| 577 |
{ |
| 578 |
current->certificate_verified = "FAILED"; |
| 579 |
fprintf( stderr, "tls: X.509 Certificate by '%s' is NOT trusted.\n", name); |
| 580 |
|
| 581 |
if (ssl_verify == 2 || ssl_verify == 1) { |
| 582 |
current->alert_to_send = GNUTLS_A_BAD_CERTIFICATE; |
| 583 |
current->status = SEND_ALERT; |
| 584 |
return 1; |
| 585 |
} |
| 586 |
} else { |
| 587 |
current->certificate_verified = "SUCCESS"; |
| 588 |
fprintf( stderr, "tls: X.509 Certificate by '%s' was verified.\n", name); |
| 589 |
} |
| 590 |
} |
| 591 |
|
| 592 |
} |
| 593 |
retval = 1; |
| 594 |
current->status = READ_HEADER; |
| 595 |
} |
| 596 |
|
| 597 |
return retval; |
| 598 |
} |
| 599 |
|
| 600 |
int send_alert(request * current) |
| 601 |
{ |
| 602 |
int retval; |
| 603 |
|
| 604 |
retval = gnutls_alert_send( current->ssl_state, |
| 605 |
GNUTLS_AL_FATAL, current->alert_to_send); |
| 606 |
|
| 607 |
if (retval == GNUTLS_E_AGAIN) |
| 608 |
retval = -1; |
| 609 |
else if (retval == GNUTLS_E_INTERRUPTED) |
| 610 |
retval = 1; |
| 611 |
else if (retval <= 0) { |
| 612 |
retval = 0; |
| 613 |
current->status = DEAD; |
| 614 |
} |
| 615 |
|
| 616 |
return retval; |
| 617 |
} |
| 618 |
|
| 619 |
#else /* a stub for initialize_ssl */ |
| 620 |
|
| 621 |
int initialize_ssl(void) |
| 622 |
{ |
| 623 |
log_error_time(); |
| 624 |
fprintf(stderr, "SSL is not available in this build\n"); |
| 625 |
exit(1); |
| 626 |
} |
| 627 |
|
| 628 |
#endif |
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