1 |
nmav |
1.1 |
/* |
2 |
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* Copyright (C) 2002 Nikos Mavroyanopoulos |
3 |
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* |
4 |
nmav |
1.5 |
* This file is part of Hydra webserver. |
5 |
nmav |
1.1 |
* |
6 |
nmav |
1.5 |
* Hydra is free software; you can redistribute it and/or modify |
7 |
nmav |
1.1 |
* it under the terms of the GNU General Public License as published by |
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* the Free Software Foundation; either version 2 of the License, or |
9 |
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* (at your option) any later version. |
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* |
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nmav |
1.5 |
* Hydra is distributed in the hope that it will be useful, |
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nmav |
1.1 |
* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* 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 |
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* along with this program; if not, write to the Free Software |
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA |
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*/ |
20 |
nmav |
1.6 |
|
21 |
nmav |
1.1 |
#include <stdio.h> |
22 |
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#include <stdlib.h> |
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#include <string.h> |
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#include "boa.h" |
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#ifdef ENABLE_SSL |
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|
28 |
nmav |
1.7 |
#include "ssl.h" |
29 |
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|
30 |
nmav |
1.1 |
#include <gnutls/gnutls.h> |
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#include <gcrypt.h> |
32 |
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|
33 |
nmav |
1.3 |
#ifdef ENABLE_SMP |
34 |
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pthread_mutex_t ssl_session_cache_lock = PTHREAD_MUTEX_INITIALIZER; |
35 |
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#endif |
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|
37 |
nmav |
1.1 |
extern int ssl_session_cache; |
38 |
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extern int ssl_session_timeout; |
39 |
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|
40 |
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extern char* ssl_ciphers; |
41 |
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extern char* ssl_kx; |
42 |
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extern char* ssl_mac; |
43 |
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extern char* ssl_comp; |
44 |
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extern char* ssl_protocol; |
45 |
nmav |
1.7 |
extern int ssl_verify; /* 0 no verify, 1 request certificate, and validate |
46 |
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* if sent, 2 require certificate and validate. |
47 |
nmav |
1.8 |
* 3 is request one, and try to verify it. Does not fail in |
48 |
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* any case. |
49 |
nmav |
1.7 |
*/ |
50 |
nmav |
1.1 |
|
51 |
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static void wrap_db_init(void); |
52 |
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static int wrap_db_store(void *dbf, gnutls_datum key, gnutls_datum data); |
53 |
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static gnutls_datum wrap_db_fetch(void *dbf, gnutls_datum key); |
54 |
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static int wrap_db_delete(void *dbf, gnutls_datum key); |
55 |
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56 |
nmav |
1.2 |
static int cur = 0; /* points to the credentials structure used */ |
57 |
nmav |
1.10 |
static gnutls_certificate_credentials credentials[2] = { NULL, NULL }; |
58 |
nmav |
1.1 |
|
59 |
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static int need_dh_params = 0; /* whether we need to generate DHE |
60 |
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* parameters. Depend on the chosen ciphersuites. |
61 |
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*/ |
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static int need_rsa_params = 0; |
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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; |
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|
70 |
nmav |
1.2 |
gnutls_dh_params _dh_params[2]; |
71 |
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gnutls_rsa_params _rsa_params[2]; |
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nmav |
1.1 |
|
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nmav |
1.2 |
static int generate_dh_primes( gnutls_dh_params* dh_params) |
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nmav |
1.1 |
{ |
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gnutls_datum prime, generator; |
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|
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nmav |
1.2 |
if (gnutls_dh_params_init( dh_params) < 0) { |
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nmav |
1.1 |
log_error_time(); |
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nmav |
1.15 |
fprintf(stderr, "tls: Error in dh parameter initialization\n"); |
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nmav |
1.1 |
exit(1); |
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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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if (gnutls_dh_params_generate(&prime, &generator, ssl_dh_bits) < |
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0) { |
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log_error_time(); |
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nmav |
1.15 |
fprintf(stderr, "tls: Error in prime generation\n"); |
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nmav |
1.1 |
exit(1); |
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} |
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if (gnutls_dh_params_set |
97 |
nmav |
1.2 |
(*dh_params, prime, generator, ssl_dh_bits) < 0) { |
98 |
nmav |
1.1 |
log_error_time(); |
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nmav |
1.15 |
fprintf(stderr, "tls: Error in prime replacement\n"); |
100 |
nmav |
1.1 |
exit(1); |
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} |
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log_error_time(); |
104 |
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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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free(prime.data); |
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free(generator.data); |
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return 0; |
113 |
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} |
114 |
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115 |
nmav |
1.2 |
static int generate_rsa_params( gnutls_rsa_params* rsa_params) |
116 |
nmav |
1.1 |
{ |
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gnutls_datum m, e, d, p, q, u; |
118 |
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119 |
nmav |
1.2 |
if (gnutls_rsa_params_init( rsa_params) < 0) { |
120 |
nmav |
1.1 |
log_error_time(); |
121 |
nmav |
1.15 |
fprintf(stderr, "tls: Error in rsa parameter initialization\n"); |
122 |
nmav |
1.1 |
exit(1); |
123 |
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} |
124 |
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/* Generate RSA parameters - for use with RSA-export |
126 |
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* cipher suites. These should be discarded and regenerated |
127 |
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* once a day, once every 500 transactions etc. Depends on the |
128 |
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* security requirements. |
129 |
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*/ |
130 |
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131 |
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if (gnutls_rsa_params_generate(&m, &e, &d, &p, &q, &u, 512) < 0) { |
132 |
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log_error_time(); |
133 |
nmav |
1.15 |
fprintf(stderr, "tls: Error in rsa parameter generation\n"); |
134 |
nmav |
1.1 |
exit(1); |
135 |
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} |
136 |
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137 |
nmav |
1.2 |
if (gnutls_rsa_params_set( *rsa_params, m, e, d, p, q, u, 512) < 0) { |
138 |
nmav |
1.1 |
log_error_time(); |
139 |
nmav |
1.15 |
fprintf(stderr, "tls: Error in rsa parameter setting\n"); |
140 |
nmav |
1.1 |
exit(1); |
141 |
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} |
142 |
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143 |
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free(m.data); |
144 |
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free(e.data); |
145 |
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free(d.data); |
146 |
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free(p.data); |
147 |
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free(q.data); |
148 |
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free(u.data); |
149 |
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150 |
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log_error_time(); |
151 |
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fprintf |
152 |
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(stderr, "tls: Generated temporary RSA parameters.\n"); |
153 |
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154 |
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return 0; |
155 |
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} |
156 |
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157 |
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static int protocol_priority[16]; |
158 |
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static int kx_priority[16]; |
159 |
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static int cipher_priority[16]; |
160 |
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static int mac_priority[16]; |
161 |
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static int comp_priority[16]; |
162 |
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163 |
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/* Parses a string in the form: |
164 |
nmav |
1.10 |
* CIPHER1, CIPHER2, ... and tries to find the given algorithm. |
165 |
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* This is inefficient. Returns true or false. |
166 |
nmav |
1.1 |
*/ |
167 |
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static int parse_cs_string( const char* string, const char* algo) |
168 |
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{ |
169 |
nmav |
1.10 |
char *broken_list[MAX_COMMA_SEP_ELEMENTS]; |
170 |
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int broken_list_size, i; |
171 |
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char list[64]; |
172 |
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173 |
nmav |
1.1 |
if (string == NULL || algo == NULL) return 0; |
174 |
nmav |
1.10 |
|
175 |
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if (strlen( string) > sizeof(list)-1) return 0; |
176 |
nmav |
1.1 |
|
177 |
nmav |
1.10 |
strcpy( list, string); |
178 |
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179 |
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break_comma_list( list, broken_list, &broken_list_size); |
180 |
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181 |
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for (i=0;i<broken_list_size;i++) { |
182 |
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if (strcmp( broken_list[i], algo) == 0) { |
183 |
nmav |
1.1 |
return 1; |
184 |
nmav |
1.10 |
} |
185 |
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} |
186 |
nmav |
1.1 |
|
187 |
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return 0; |
188 |
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189 |
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} |
190 |
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191 |
nmav |
1.10 |
/* Initializes a single SSL/TLS session. That is set the algorithm, |
192 |
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* the db backend, whether to request certificates etc. |
193 |
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*/ |
194 |
nmav |
1.1 |
gnutls_session initialize_ssl_session(void) |
195 |
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{ |
196 |
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GNUTLS_STATE state; |
197 |
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198 |
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gnutls_init(&state, GNUTLS_SERVER); |
199 |
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200 |
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gnutls_cipher_set_priority(state, cipher_priority); |
201 |
|
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gnutls_compression_set_priority(state, comp_priority); |
202 |
|
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gnutls_kx_set_priority(state, kx_priority); |
203 |
|
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gnutls_protocol_set_priority(state, protocol_priority); |
204 |
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gnutls_mac_set_priority(state, mac_priority); |
205 |
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|
206 |
nmav |
1.2 |
gnutls_cred_set(state, GNUTLS_CRD_CERTIFICATE, credentials[ cur]); |
207 |
nmav |
1.1 |
|
208 |
|
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gnutls_certificate_server_set_request(state, GNUTLS_CERT_IGNORE); |
209 |
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|
210 |
|
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if (ssl_session_cache != 0) { |
211 |
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gnutls_db_set_retrieve_function(state, wrap_db_fetch); |
212 |
|
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gnutls_db_set_remove_function(state, wrap_db_delete); |
213 |
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gnutls_db_set_store_function(state, wrap_db_store); |
214 |
|
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gnutls_db_set_ptr(state, NULL); |
215 |
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} |
216 |
|
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gnutls_db_set_cache_expiration( state, ssl_session_timeout); |
217 |
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|
218 |
nmav |
1.9 |
/* gnutls_handshake_set_private_extensions( state, 1); */ |
219 |
nmav |
1.1 |
|
220 |
nmav |
1.8 |
if (ssl_verify == 1 || ssl_verify == 3) { |
221 |
nmav |
1.7 |
gnutls_certificate_server_set_request( state, GNUTLS_CERT_REQUEST); |
222 |
|
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} else if (ssl_verify == 2) { |
223 |
|
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gnutls_certificate_server_set_request( state, GNUTLS_CERT_REQUIRE); |
224 |
nmav |
1.10 |
} else { /* default */ |
225 |
|
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gnutls_certificate_server_set_request(state, GNUTLS_CERT_IGNORE); |
226 |
nmav |
1.7 |
} |
227 |
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|
228 |
nmav |
1.10 |
|
229 |
nmav |
1.1 |
return state; |
230 |
|
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} |
231 |
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|
232 |
nmav |
1.7 |
extern char *ca_cert; |
233 |
nmav |
1.1 |
extern char *server_cert; |
234 |
|
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extern char *server_key; |
235 |
|
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|
236 |
|
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/* Initialization of gnutls' global state |
237 |
|
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*/ |
238 |
|
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int initialize_ssl(void) |
239 |
|
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{ |
240 |
|
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int i; |
241 |
|
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|
242 |
nmav |
1.15 |
log_error_time(); |
243 |
|
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fprintf(stderr, "tls: Initializing GnuTLS/%s.\n", gnutls_check_version(NULL)); |
244 |
nmav |
1.1 |
gnutls_global_init(); |
245 |
|
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/* gcry_control (GCRYCTL_DISABLE_INTERNAL_LOCKING, NULL, 0); */ |
246 |
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|
247 |
nmav |
1.2 |
if (gnutls_certificate_allocate_credentials( &credentials[0]) < 0) { |
248 |
nmav |
1.1 |
log_error_time(); |
249 |
nmav |
1.15 |
fprintf(stderr, "tls: certificate allocation error\n"); |
250 |
nmav |
1.1 |
exit(1); |
251 |
|
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} |
252 |
|
|
|
253 |
|
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if (gnutls_certificate_set_x509_key_file |
254 |
nmav |
1.2 |
( credentials[0], server_cert, server_key, GNUTLS_X509_FMT_PEM) < 0) { |
255 |
nmav |
1.1 |
log_error_time(); |
256 |
nmav |
1.15 |
fprintf(stderr, "tls: could not find '%s' or '%s'.\n", server_cert, |
257 |
nmav |
1.1 |
server_key); |
258 |
|
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exit(1); |
259 |
|
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} |
260 |
|
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|
261 |
nmav |
1.7 |
if (ca_cert != NULL && gnutls_certificate_set_x509_trust_file |
262 |
|
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( credentials[0], ca_cert, GNUTLS_X509_FMT_PEM) < 0) { |
263 |
|
|
log_error_time(); |
264 |
nmav |
1.15 |
fprintf(stderr, "tls: could not find '%s'.\n", ca_cert); |
265 |
nmav |
1.7 |
exit(1); |
266 |
|
|
} |
267 |
|
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|
268 |
nmav |
1.1 |
if (ssl_session_cache != 0) |
269 |
|
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wrap_db_init(); |
270 |
|
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|
271 |
|
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/* Add ciphers |
272 |
|
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*/ |
273 |
|
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i = 0; |
274 |
|
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if ( parse_cs_string( ssl_ciphers, "AES") != 0) |
275 |
|
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cipher_priority[i++] = GNUTLS_CIPHER_RIJNDAEL_128_CBC; |
276 |
|
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if ( parse_cs_string( ssl_ciphers, "ARCFOUR-128") != 0) |
277 |
|
|
cipher_priority[i++] = GNUTLS_CIPHER_ARCFOUR_128; |
278 |
|
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if ( parse_cs_string( ssl_ciphers, "3DES") != 0) |
279 |
|
|
cipher_priority[i++] = GNUTLS_CIPHER_3DES_CBC; |
280 |
|
|
if ( parse_cs_string( ssl_ciphers, "ARCFOUR-40") != 0) |
281 |
|
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cipher_priority[i++] = GNUTLS_CIPHER_ARCFOUR_40; |
282 |
|
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cipher_priority[i] = 0; |
283 |
|
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|
284 |
|
|
/* Add key exchange methods |
285 |
|
|
*/ |
286 |
|
|
i = 0; |
287 |
|
|
if ( parse_cs_string( ssl_kx, "RSA") != 0) |
288 |
|
|
kx_priority[i++] = GNUTLS_KX_RSA; |
289 |
|
|
if ( parse_cs_string( ssl_kx, "RSA-EXPORT") != 0) { |
290 |
|
|
kx_priority[i++] = GNUTLS_KX_RSA_EXPORT; |
291 |
|
|
need_rsa_params = 1; |
292 |
|
|
} |
293 |
|
|
if ( parse_cs_string( ssl_kx, "DHE-RSA") != 0) { |
294 |
|
|
kx_priority[i++] = GNUTLS_KX_DHE_RSA; |
295 |
|
|
need_dh_params = 1; /* generate DH parameters */ |
296 |
|
|
} |
297 |
|
|
if ( parse_cs_string( ssl_kx, "DHE-DSS") != 0) { |
298 |
|
|
kx_priority[i++] = GNUTLS_KX_DHE_DSS; |
299 |
|
|
need_dh_params = 1; |
300 |
|
|
} |
301 |
|
|
kx_priority[i] = 0; |
302 |
|
|
|
303 |
|
|
/* Add MAC Algorithms |
304 |
|
|
*/ |
305 |
|
|
i = 0; |
306 |
|
|
if ( parse_cs_string( ssl_mac, "MD5") != 0) |
307 |
|
|
mac_priority[i++] = GNUTLS_MAC_MD5; |
308 |
nmav |
1.11 |
if ( parse_cs_string( ssl_mac, "SHA1") != 0) |
309 |
nmav |
1.1 |
mac_priority[i++] = GNUTLS_MAC_SHA; |
310 |
|
|
mac_priority[i] = 0; |
311 |
|
|
|
312 |
|
|
/* Add Compression algorithms |
313 |
|
|
*/ |
314 |
|
|
i = 0; |
315 |
|
|
if ( parse_cs_string( ssl_comp, "NULL") != 0) |
316 |
|
|
comp_priority[i++] = GNUTLS_COMP_NULL; |
317 |
|
|
if ( parse_cs_string( ssl_comp, "ZLIB") != 0) |
318 |
|
|
comp_priority[i++] = GNUTLS_COMP_ZLIB; |
319 |
|
|
if ( parse_cs_string( ssl_comp, "LZO") != 0) |
320 |
|
|
comp_priority[i++] = GNUTLS_COMP_LZO; |
321 |
|
|
comp_priority[i] = 0; |
322 |
|
|
|
323 |
|
|
/* Add protocols |
324 |
|
|
*/ |
325 |
|
|
i = 0; |
326 |
nmav |
1.10 |
if ( parse_cs_string( ssl_protocol, "TLS1.0") != 0) |
327 |
nmav |
1.1 |
protocol_priority[i++] = GNUTLS_TLS1; |
328 |
nmav |
1.10 |
if ( parse_cs_string( ssl_protocol, "SSL3.0") != 0) |
329 |
nmav |
1.1 |
protocol_priority[i++] = GNUTLS_SSL3; |
330 |
|
|
protocol_priority[i] = 0; |
331 |
|
|
|
332 |
|
|
/* Generate temporary parameters -- if needed. |
333 |
|
|
*/ |
334 |
|
|
if (need_rsa_params) { |
335 |
nmav |
1.2 |
generate_rsa_params( &_rsa_params[0]); |
336 |
|
|
gnutls_certificate_set_rsa_params(credentials[0], _rsa_params[0]); |
337 |
nmav |
1.1 |
} |
338 |
|
|
|
339 |
|
|
if (need_dh_params) { |
340 |
nmav |
1.2 |
generate_dh_primes( &_dh_params[0]); |
341 |
|
|
gnutls_certificate_set_dh_params(credentials[0], _dh_params[0]); |
342 |
nmav |
1.1 |
} |
343 |
|
|
|
344 |
|
|
return 0; |
345 |
|
|
} |
346 |
|
|
|
347 |
|
|
/* This function will regenerate the SSL parameters (RSA and DH) without |
348 |
|
|
* any need for downtime. |
349 |
|
|
*/ |
350 |
nmav |
1.10 |
|
351 |
nmav |
1.1 |
void ssl_regenerate_params(void) |
352 |
|
|
{ |
353 |
nmav |
1.10 |
static int already_here; /* static so the default value == 0 */ |
354 |
nmav |
1.2 |
int _cur = (cur + 1) % 2; |
355 |
|
|
|
356 |
nmav |
1.10 |
/* There is a rare situation where we have been here, because of |
357 |
|
|
* a SIGHUP signal, and the process receives a SIGALRM as well. |
358 |
|
|
* We try to avoid messing everything up. |
359 |
|
|
*/ |
360 |
|
|
if (already_here != 0) return; |
361 |
|
|
already_here = 1; |
362 |
|
|
|
363 |
nmav |
1.2 |
/* The hint here, is that we keep a copy of 2 certificate credentials. |
364 |
|
|
* When we come here, we free the unused copy and allocate new |
365 |
|
|
* parameters to it. Then we make the current copy to be this copy. |
366 |
|
|
* |
367 |
|
|
* We don't free the previous copy because we don't know if anyone |
368 |
|
|
* is using it. (this has to be fixed) |
369 |
|
|
*/ |
370 |
nmav |
1.1 |
|
371 |
|
|
time(¤t_time); |
372 |
|
|
|
373 |
nmav |
1.2 |
if ( !credentials[_cur]) { |
374 |
|
|
if (gnutls_certificate_allocate_credentials( &credentials[ _cur]) < 0) { |
375 |
|
|
log_error_time(); |
376 |
nmav |
1.15 |
fprintf(stderr, "tls: certificate allocation error\n"); |
377 |
nmav |
1.2 |
exit(1); |
378 |
|
|
} |
379 |
|
|
|
380 |
|
|
if (gnutls_certificate_set_x509_key_file |
381 |
|
|
( credentials[_cur], server_cert, server_key, GNUTLS_X509_FMT_PEM) < 0) { |
382 |
|
|
log_error_time(); |
383 |
nmav |
1.15 |
fprintf(stderr, "tls: could not find '%s' or '%s'.", server_cert, |
384 |
nmav |
1.2 |
server_key); |
385 |
|
|
exit(1); |
386 |
|
|
} |
387 |
nmav |
1.7 |
|
388 |
|
|
if (ca_cert!=NULL && gnutls_certificate_set_x509_trust_file |
389 |
|
|
( credentials[_cur], ca_cert, GNUTLS_X509_FMT_PEM) < 0) { |
390 |
|
|
log_error_time(); |
391 |
nmav |
1.15 |
fprintf(stderr, "tls: could not find '%s'.\n", ca_cert); |
392 |
nmav |
1.7 |
exit(1); |
393 |
|
|
} |
394 |
nmav |
1.2 |
} |
395 |
|
|
|
396 |
nmav |
1.1 |
if (need_rsa_params) { |
397 |
nmav |
1.2 |
gnutls_rsa_params_deinit( _rsa_params[ _cur]); |
398 |
|
|
generate_rsa_params( &_rsa_params[ _cur]); |
399 |
|
|
gnutls_certificate_set_rsa_params(credentials[_cur], _rsa_params[ _cur]); |
400 |
nmav |
1.1 |
} |
401 |
|
|
|
402 |
|
|
if (need_dh_params) { |
403 |
nmav |
1.2 |
gnutls_dh_params_deinit( _dh_params[ _cur]); |
404 |
|
|
generate_dh_primes( &_dh_params[ _cur]); |
405 |
|
|
gnutls_certificate_set_dh_params(credentials[_cur], _dh_params[ _cur]); |
406 |
nmav |
1.1 |
} |
407 |
nmav |
1.2 |
|
408 |
|
|
cur = _cur; |
409 |
nmav |
1.1 |
|
410 |
nmav |
1.10 |
already_here = 0; |
411 |
nmav |
1.1 |
return; |
412 |
|
|
} |
413 |
|
|
|
414 |
|
|
|
415 |
|
|
/* Session resuming: |
416 |
|
|
*/ |
417 |
|
|
|
418 |
|
|
#define SESSION_ID_SIZE 32 |
419 |
nmav |
1.14 |
#define SESSION_DATA_SIZE 1024 |
420 |
nmav |
1.1 |
|
421 |
|
|
typedef struct { |
422 |
|
|
char session_id[SESSION_ID_SIZE]; |
423 |
|
|
int session_id_size; |
424 |
|
|
|
425 |
|
|
char session_data[SESSION_DATA_SIZE]; |
426 |
|
|
int session_data_size; |
427 |
|
|
} CACHE; |
428 |
|
|
|
429 |
|
|
static CACHE *cache_db; |
430 |
nmav |
1.3 |
static int cache_db_ptr; |
431 |
nmav |
1.1 |
|
432 |
|
|
static void wrap_db_init(void) |
433 |
|
|
{ |
434 |
|
|
|
435 |
|
|
/* allocate cache_db */ |
436 |
|
|
cache_db = calloc(1, ssl_session_cache * sizeof(CACHE)); |
437 |
|
|
} |
438 |
|
|
|
439 |
|
|
static int wrap_db_store(void *dbf, gnutls_datum key, gnutls_datum data) |
440 |
|
|
{ |
441 |
|
|
|
442 |
|
|
if (cache_db == NULL) |
443 |
|
|
return -1; |
444 |
|
|
|
445 |
|
|
if (key.size > SESSION_ID_SIZE) |
446 |
|
|
return -1; |
447 |
|
|
if (data.size > SESSION_DATA_SIZE) |
448 |
|
|
return -1; |
449 |
|
|
|
450 |
nmav |
1.3 |
#ifdef ENABLE_SMP |
451 |
|
|
pthread_mutex_lock( &ssl_session_cache_lock); |
452 |
|
|
#endif |
453 |
|
|
|
454 |
nmav |
1.1 |
memcpy(cache_db[cache_db_ptr].session_id, key.data, key.size); |
455 |
|
|
cache_db[cache_db_ptr].session_id_size = key.size; |
456 |
|
|
|
457 |
|
|
memcpy(cache_db[cache_db_ptr].session_data, data.data, data.size); |
458 |
|
|
cache_db[cache_db_ptr].session_data_size = data.size; |
459 |
|
|
|
460 |
nmav |
1.4 |
cache_db_ptr++; |
461 |
|
|
cache_db_ptr %= ssl_session_cache; |
462 |
nmav |
1.3 |
|
463 |
|
|
#ifdef ENABLE_SMP |
464 |
|
|
pthread_mutex_unlock( &ssl_session_cache_lock); |
465 |
|
|
#endif |
466 |
nmav |
1.1 |
|
467 |
|
|
return 0; |
468 |
|
|
} |
469 |
|
|
|
470 |
|
|
static gnutls_datum wrap_db_fetch(void *dbf, gnutls_datum key) |
471 |
|
|
{ |
472 |
|
|
gnutls_datum res = { NULL, 0 }; |
473 |
|
|
int i; |
474 |
|
|
|
475 |
|
|
if (cache_db == NULL) |
476 |
|
|
return res; |
477 |
|
|
|
478 |
nmav |
1.3 |
#ifdef ENABLE_SMP |
479 |
|
|
pthread_mutex_lock( &ssl_session_cache_lock); |
480 |
|
|
#endif |
481 |
|
|
|
482 |
nmav |
1.1 |
for (i = 0; i < ssl_session_cache; i++) { |
483 |
|
|
if (key.size == cache_db[i].session_id_size && |
484 |
|
|
memcmp(key.data, cache_db[i].session_id, key.size) == 0) { |
485 |
|
|
|
486 |
|
|
res.size = cache_db[i].session_data_size; |
487 |
|
|
|
488 |
|
|
res.data = malloc(res.size); |
489 |
nmav |
1.3 |
if (res.data == NULL) { |
490 |
|
|
#ifdef ENABLE_SMP |
491 |
|
|
pthread_mutex_unlock( &ssl_session_cache_lock); |
492 |
|
|
#endif |
493 |
nmav |
1.1 |
return res; |
494 |
nmav |
1.3 |
} |
495 |
nmav |
1.1 |
|
496 |
|
|
memcpy(res.data, cache_db[i].session_data, res.size); |
497 |
|
|
|
498 |
nmav |
1.3 |
#ifdef ENABLE_SMP |
499 |
|
|
pthread_mutex_unlock( &ssl_session_cache_lock); |
500 |
|
|
#endif |
501 |
nmav |
1.1 |
return res; |
502 |
|
|
} |
503 |
|
|
} |
504 |
nmav |
1.3 |
|
505 |
|
|
#ifdef ENABLE_SMP |
506 |
|
|
pthread_mutex_unlock( &ssl_session_cache_lock); |
507 |
|
|
#endif |
508 |
|
|
|
509 |
nmav |
1.1 |
return res; |
510 |
|
|
} |
511 |
|
|
|
512 |
|
|
static int wrap_db_delete(void *dbf, gnutls_datum key) |
513 |
|
|
{ |
514 |
|
|
int i; |
515 |
|
|
|
516 |
|
|
if (cache_db == NULL) |
517 |
|
|
return -1; |
518 |
|
|
|
519 |
nmav |
1.3 |
#ifdef ENABLE_SMP |
520 |
|
|
pthread_mutex_lock( &ssl_session_cache_lock); |
521 |
|
|
#endif |
522 |
|
|
|
523 |
nmav |
1.1 |
for (i = 0; i < ssl_session_cache; i++) { |
524 |
|
|
if (key.size == cache_db[i].session_id_size && |
525 |
|
|
memcmp(key.data, cache_db[i].session_id, key.size) == 0) { |
526 |
|
|
|
527 |
|
|
cache_db[i].session_id_size = 0; |
528 |
|
|
cache_db[i].session_data_size = 0; |
529 |
|
|
|
530 |
nmav |
1.3 |
#ifdef ENABLE_SMP |
531 |
|
|
pthread_mutex_unlock( &ssl_session_cache_lock); |
532 |
|
|
#endif |
533 |
|
|
|
534 |
nmav |
1.1 |
return 0; |
535 |
|
|
} |
536 |
|
|
} |
537 |
nmav |
1.3 |
|
538 |
|
|
#ifdef ENABLE_SMP |
539 |
|
|
pthread_mutex_unlock( &ssl_session_cache_lock); |
540 |
|
|
#endif |
541 |
nmav |
1.1 |
return -1; |
542 |
|
|
|
543 |
|
|
} |
544 |
|
|
|
545 |
|
|
void check_ssl_alert( request* req, int ret) |
546 |
|
|
{ |
547 |
|
|
int last_alert; |
548 |
|
|
|
549 |
|
|
if (ret == GNUTLS_E_WARNING_ALERT_RECEIVED || ret == GNUTLS_E_FATAL_ALERT_RECEIVED) |
550 |
|
|
{ |
551 |
|
|
last_alert = gnutls_alert_get(req->ssl_state); |
552 |
|
|
log_error_doc(req); |
553 |
nmav |
1.15 |
fprintf(stderr, "tls: Received alert '%s'.\n", gnutls_alert_get_name(last_alert)); |
554 |
nmav |
1.1 |
} |
555 |
|
|
} |
556 |
|
|
|
557 |
|
|
int finish_handshake(request * current) |
558 |
|
|
{ |
559 |
|
|
int retval; |
560 |
|
|
|
561 |
|
|
retval = gnutls_handshake(current->ssl_state); |
562 |
|
|
|
563 |
|
|
if (retval == GNUTLS_E_AGAIN) |
564 |
|
|
retval = -1; |
565 |
|
|
else if (retval == GNUTLS_E_INTERRUPTED) |
566 |
|
|
retval = 1; |
567 |
|
|
else if (retval < 0) { |
568 |
|
|
if (gnutls_error_is_fatal(retval) != 0) { |
569 |
|
|
log_error_doc(current); |
570 |
nmav |
1.15 |
fprintf(stderr, "tls: Handshake error '%s'.\n", gnutls_strerror(retval)); |
571 |
nmav |
1.1 |
check_ssl_alert( current, retval); |
572 |
|
|
|
573 |
|
|
/* we ignore the level of the alert, since we always |
574 |
|
|
* send fatal alerts. |
575 |
|
|
*/ |
576 |
|
|
current->alert_to_send = gnutls_error_to_alert( retval, NULL); |
577 |
nmav |
1.11 |
if (current->alert_to_send == GNUTLS_E_INVALID_REQUEST) |
578 |
|
|
current->alert_to_send = GNUTLS_A_HANDSHAKE_FAILURE; |
579 |
|
|
|
580 |
|
|
current->status = SEND_ALERT; |
581 |
nmav |
1.1 |
retval = 1; |
582 |
|
|
} else { |
583 |
|
|
check_ssl_alert( current, retval); |
584 |
|
|
retval = 1; |
585 |
|
|
} |
586 |
|
|
} else if (retval == 0) { |
587 |
nmav |
1.7 |
|
588 |
nmav |
1.8 |
if (ssl_verify >= 1) { |
589 |
nmav |
1.7 |
int verify; |
590 |
|
|
char name[128]; |
591 |
|
|
const gnutls_datum *cert_list; |
592 |
|
|
int cert_list_size; |
593 |
|
|
|
594 |
|
|
|
595 |
|
|
verify = gnutls_certificate_verify_peers( current->ssl_state); |
596 |
nmav |
1.8 |
current->certificate_verified = "NONE"; |
597 |
|
|
|
598 |
|
|
if (verify != GNUTLS_E_NO_CERTIFICATE_FOUND || ssl_verify == 2) { |
599 |
nmav |
1.7 |
cert_list = |
600 |
|
|
gnutls_certificate_get_peers(current->ssl_state, &cert_list_size); |
601 |
|
|
|
602 |
|
|
if (cert_list) |
603 |
nmav |
1.12 |
if (gnutls_x509_extract_certificate_dn_string(name, sizeof(name), |
604 |
|
|
&cert_list[0], 0) < 0) strcpy(name, "Unknown"); |
605 |
nmav |
1.7 |
|
606 |
|
|
log_error_time(); |
607 |
|
|
if (verify & GNUTLS_CERT_NOT_TRUSTED || verify & GNUTLS_CERT_INVALID || |
608 |
|
|
verify & GNUTLS_CERT_CORRUPTED || verify & GNUTLS_CERT_REVOKED) |
609 |
|
|
{ |
610 |
nmav |
1.8 |
current->certificate_verified = "FAILED"; |
611 |
|
|
fprintf( stderr, "tls: X.509 Certificate by '%s' is NOT trusted.\n", name); |
612 |
|
|
|
613 |
|
|
if (ssl_verify == 2 || ssl_verify == 1) { |
614 |
|
|
current->alert_to_send = GNUTLS_A_BAD_CERTIFICATE; |
615 |
|
|
current->status = SEND_ALERT; |
616 |
|
|
return 1; |
617 |
|
|
} |
618 |
|
|
} else { |
619 |
|
|
current->certificate_verified = "SUCCESS"; |
620 |
|
|
fprintf( stderr, "tls: X.509 Certificate by '%s' was verified.\n", name); |
621 |
nmav |
1.7 |
} |
622 |
|
|
} |
623 |
|
|
|
624 |
|
|
} |
625 |
nmav |
1.1 |
retval = 1; |
626 |
|
|
current->status = READ_HEADER; |
627 |
|
|
} |
628 |
|
|
|
629 |
|
|
return retval; |
630 |
|
|
} |
631 |
|
|
|
632 |
|
|
int send_alert(request * current) |
633 |
|
|
{ |
634 |
|
|
int retval; |
635 |
|
|
|
636 |
|
|
retval = gnutls_alert_send( current->ssl_state, |
637 |
|
|
GNUTLS_AL_FATAL, current->alert_to_send); |
638 |
|
|
|
639 |
|
|
if (retval == GNUTLS_E_AGAIN) |
640 |
|
|
retval = -1; |
641 |
|
|
else if (retval == GNUTLS_E_INTERRUPTED) |
642 |
|
|
retval = 1; |
643 |
|
|
else if (retval <= 0) { |
644 |
|
|
retval = 0; |
645 |
|
|
current->status = DEAD; |
646 |
|
|
} |
647 |
|
|
|
648 |
|
|
return retval; |
649 |
|
|
} |
650 |
|
|
|
651 |
nmav |
1.10 |
/* This will parse the ciphers given and set the new ciphers. |
652 |
|
|
* If required it will regenerate RSA and DHE parameters. |
653 |
|
|
*/ |
654 |
|
|
void ssl_reinit() |
655 |
|
|
{ |
656 |
|
|
int i; |
657 |
|
|
|
658 |
|
|
need_dh_params = 0; |
659 |
|
|
need_rsa_params = 0; |
660 |
|
|
|
661 |
|
|
/* Add ciphers |
662 |
|
|
*/ |
663 |
|
|
i = 0; |
664 |
|
|
if ( parse_cs_string( ssl_ciphers, "AES") != 0) |
665 |
|
|
cipher_priority[i++] = GNUTLS_CIPHER_RIJNDAEL_128_CBC; |
666 |
|
|
if ( parse_cs_string( ssl_ciphers, "ARCFOUR-128") != 0) |
667 |
|
|
cipher_priority[i++] = GNUTLS_CIPHER_ARCFOUR_128; |
668 |
|
|
if ( parse_cs_string( ssl_ciphers, "3DES") != 0) |
669 |
|
|
cipher_priority[i++] = GNUTLS_CIPHER_3DES_CBC; |
670 |
|
|
if ( parse_cs_string( ssl_ciphers, "ARCFOUR-40") != 0) |
671 |
|
|
cipher_priority[i++] = GNUTLS_CIPHER_ARCFOUR_40; |
672 |
|
|
cipher_priority[i] = 0; |
673 |
|
|
|
674 |
|
|
/* Add key exchange methods |
675 |
|
|
*/ |
676 |
|
|
i = 0; |
677 |
|
|
if ( parse_cs_string( ssl_kx, "RSA") != 0) |
678 |
|
|
kx_priority[i++] = GNUTLS_KX_RSA; |
679 |
|
|
if ( parse_cs_string( ssl_kx, "RSA-EXPORT") != 0) { |
680 |
|
|
kx_priority[i++] = GNUTLS_KX_RSA_EXPORT; |
681 |
|
|
need_rsa_params = 1; |
682 |
|
|
} |
683 |
|
|
if ( parse_cs_string( ssl_kx, "DHE-RSA") != 0) { |
684 |
|
|
kx_priority[i++] = GNUTLS_KX_DHE_RSA; |
685 |
|
|
need_dh_params = 1; /* generate DH parameters */ |
686 |
|
|
} |
687 |
|
|
if ( parse_cs_string( ssl_kx, "DHE-DSS") != 0) { |
688 |
|
|
kx_priority[i++] = GNUTLS_KX_DHE_DSS; |
689 |
|
|
need_dh_params = 1; |
690 |
|
|
} |
691 |
|
|
kx_priority[i] = 0; |
692 |
|
|
|
693 |
|
|
/* Add MAC Algorithms |
694 |
|
|
*/ |
695 |
|
|
i = 0; |
696 |
|
|
if ( parse_cs_string( ssl_mac, "MD5") != 0) |
697 |
|
|
mac_priority[i++] = GNUTLS_MAC_MD5; |
698 |
nmav |
1.11 |
if ( parse_cs_string( ssl_mac, "SHA1") != 0) |
699 |
nmav |
1.10 |
mac_priority[i++] = GNUTLS_MAC_SHA; |
700 |
|
|
mac_priority[i] = 0; |
701 |
|
|
|
702 |
|
|
/* Add Compression algorithms |
703 |
|
|
*/ |
704 |
|
|
i = 0; |
705 |
|
|
if ( parse_cs_string( ssl_comp, "NULL") != 0) |
706 |
|
|
comp_priority[i++] = GNUTLS_COMP_NULL; |
707 |
|
|
if ( parse_cs_string( ssl_comp, "ZLIB") != 0) |
708 |
|
|
comp_priority[i++] = GNUTLS_COMP_ZLIB; |
709 |
|
|
if ( parse_cs_string( ssl_comp, "LZO") != 0) |
710 |
|
|
comp_priority[i++] = GNUTLS_COMP_LZO; |
711 |
|
|
comp_priority[i] = 0; |
712 |
|
|
|
713 |
|
|
/* Add protocols |
714 |
|
|
*/ |
715 |
|
|
i = 0; |
716 |
|
|
if ( parse_cs_string( ssl_protocol, "TLS1.0") != 0) |
717 |
|
|
protocol_priority[i++] = GNUTLS_TLS1; |
718 |
|
|
if ( parse_cs_string( ssl_protocol, "SSL3.0") != 0) |
719 |
|
|
protocol_priority[i++] = GNUTLS_SSL3; |
720 |
|
|
protocol_priority[i] = 0; |
721 |
|
|
|
722 |
|
|
|
723 |
|
|
/* Generate temporary parameters -- if needed. |
724 |
|
|
*/ |
725 |
|
|
ssl_regenerate_params(); |
726 |
|
|
|
727 |
|
|
return; |
728 |
|
|
} |
729 |
|
|
|
730 |
nmav |
1.1 |
#else /* a stub for initialize_ssl */ |
731 |
|
|
|
732 |
|
|
int initialize_ssl(void) |
733 |
|
|
{ |
734 |
|
|
log_error_time(); |
735 |
nmav |
1.15 |
fprintf(stderr, "tls: SSL is not available in this build. Disable SSL in Hydra's configuration file.\n"); |
736 |
nmav |
1.1 |
exit(1); |
737 |
nmav |
1.10 |
} |
738 |
|
|
|
739 |
|
|
void ssl_reinit() { |
740 |
|
|
return; |
741 |
nmav |
1.1 |
} |
742 |
|
|
|
743 |
|
|
#endif |