diff options
Diffstat (limited to 'src/gnutls_hooks.c')
| -rw-r--r-- | src/gnutls_hooks.c | 654 |
1 files changed, 654 insertions, 0 deletions
diff --git a/src/gnutls_hooks.c b/src/gnutls_hooks.c new file mode 100644 index 0000000..5429d66 --- /dev/null +++ b/src/gnutls_hooks.c | |||
| @@ -0,0 +1,654 @@ | |||
| 1 | /** | ||
| 2 | * Copyright 2004-2005 Paul Querna | ||
| 3 | * | ||
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); | ||
| 5 | * you may not use this file except in compliance with the License. | ||
| 6 | * You may obtain a copy of the License at | ||
| 7 | * | ||
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 | ||
| 9 | * | ||
| 10 | * Unless required by applicable law or agreed to in writing, software | ||
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, | ||
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| 13 | * See the License for the specific language governing permissions and | ||
| 14 | * limitations under the License. | ||
| 15 | * | ||
| 16 | */ | ||
| 17 | |||
| 18 | #include "mod_gnutls.h" | ||
| 19 | #include "http_vhost.h" | ||
| 20 | |||
| 21 | #if !USING_2_1_RECENT | ||
| 22 | extern server_rec *ap_server_conf; | ||
| 23 | #endif | ||
| 24 | |||
| 25 | #if APR_HAS_THREADS | ||
| 26 | GCRY_THREAD_OPTION_PTHREAD_IMPL; | ||
| 27 | #endif | ||
| 28 | |||
| 29 | #if MOD_GNUTLS_DEBUG | ||
| 30 | static apr_file_t* debug_log_fp; | ||
| 31 | #endif | ||
| 32 | |||
| 33 | static apr_status_t mgs_cleanup_pre_config(void *data) | ||
| 34 | { | ||
| 35 | gnutls_global_deinit(); | ||
| 36 | return APR_SUCCESS; | ||
| 37 | } | ||
| 38 | |||
| 39 | #if MOD_GNUTLS_DEBUG | ||
| 40 | static void gnutls_debug_log_all( int level, const char* str) | ||
| 41 | { | ||
| 42 | apr_file_printf(debug_log_fp, "<%d> %s\n", level, str); | ||
| 43 | } | ||
| 44 | #endif | ||
| 45 | |||
| 46 | int mgs_hook_pre_config(apr_pool_t * pconf, | ||
| 47 | apr_pool_t * plog, apr_pool_t * ptemp) | ||
| 48 | { | ||
| 49 | |||
| 50 | #if APR_HAS_THREADS | ||
| 51 | /* TODO: Check MPM Type here */ | ||
| 52 | gcry_control(GCRYCTL_SET_THREAD_CBS, &gcry_threads_pthread); | ||
| 53 | #endif | ||
| 54 | |||
| 55 | gnutls_global_init(); | ||
| 56 | |||
| 57 | apr_pool_cleanup_register(pconf, NULL, mgs_cleanup_pre_config, | ||
| 58 | apr_pool_cleanup_null); | ||
| 59 | |||
| 60 | #if MOD_GNUTLS_DEBUG | ||
| 61 | apr_file_open(&debug_log_fp, "/tmp/gnutls_debug", | ||
| 62 | APR_APPEND|APR_WRITE|APR_CREATE, APR_OS_DEFAULT, pconf); | ||
| 63 | |||
| 64 | gnutls_global_set_log_level(9); | ||
| 65 | gnutls_global_set_log_function(gnutls_debug_log_all); | ||
| 66 | #endif | ||
| 67 | |||
| 68 | return OK; | ||
| 69 | } | ||
| 70 | |||
| 71 | |||
| 72 | static gnutls_datum load_params(const char* file, server_rec* s, | ||
| 73 | apr_pool_t* pool) | ||
| 74 | { | ||
| 75 | gnutls_datum ret = { NULL, 0 }; | ||
| 76 | apr_file_t* fp; | ||
| 77 | apr_finfo_t finfo; | ||
| 78 | apr_status_t rv; | ||
| 79 | apr_size_t br = 0; | ||
| 80 | |||
| 81 | rv = apr_file_open(&fp, file, APR_READ|APR_BINARY, APR_OS_DEFAULT, | ||
| 82 | pool); | ||
| 83 | if (rv != APR_SUCCESS) { | ||
| 84 | ap_log_error(APLOG_MARK, APLOG_STARTUP, rv, s, | ||
| 85 | "GnuTLS failed to load params file at: %s", file); | ||
| 86 | return ret; | ||
| 87 | } | ||
| 88 | |||
| 89 | rv = apr_file_info_get(&finfo, APR_FINFO_SIZE, fp); | ||
| 90 | |||
| 91 | if (rv != APR_SUCCESS) { | ||
| 92 | ap_log_error(APLOG_MARK, APLOG_STARTUP, rv, s, | ||
| 93 | "GnuTLS failed to stat params file at: %s", file); | ||
| 94 | return ret; | ||
| 95 | } | ||
| 96 | |||
| 97 | ret.data = apr_palloc(pool, finfo.size+1); | ||
| 98 | rv = apr_file_read_full(fp, ret.data, finfo.size, &br); | ||
| 99 | |||
| 100 | if (rv != APR_SUCCESS) { | ||
| 101 | ap_log_error(APLOG_MARK, APLOG_STARTUP, rv, s, | ||
| 102 | "GnuTLS failed to read params file at: %s", file); | ||
| 103 | return ret; | ||
| 104 | } | ||
| 105 | apr_file_close(fp); | ||
| 106 | ret.data[br] = '\0'; | ||
| 107 | ret.size = br; | ||
| 108 | |||
| 109 | return ret; | ||
| 110 | } | ||
| 111 | |||
| 112 | int mgs_hook_post_config(apr_pool_t * p, apr_pool_t * plog, | ||
| 113 | apr_pool_t * ptemp, | ||
| 114 | server_rec * base_server) | ||
| 115 | { | ||
| 116 | int rv; | ||
| 117 | int data_len; | ||
| 118 | server_rec *s; | ||
| 119 | gnutls_dh_params_t dh_params; | ||
| 120 | gnutls_rsa_params_t rsa_params; | ||
| 121 | mgs_srvconf_rec *sc; | ||
| 122 | mgs_srvconf_rec *sc_base; | ||
| 123 | void *data = NULL; | ||
| 124 | int first_run = 0; | ||
| 125 | const char *userdata_key = "mgs_init"; | ||
| 126 | |||
| 127 | apr_pool_userdata_get(&data, userdata_key, base_server->process->pool); | ||
| 128 | if (data == NULL) { | ||
| 129 | first_run = 1; | ||
| 130 | apr_pool_userdata_set((const void *)1, userdata_key, | ||
| 131 | apr_pool_cleanup_null, | ||
| 132 | base_server->process->pool); | ||
| 133 | } | ||
| 134 | |||
| 135 | |||
| 136 | { | ||
| 137 | gnutls_datum pdata; | ||
| 138 | apr_pool_t* tpool; | ||
| 139 | s = base_server; | ||
| 140 | sc_base = (mgs_srvconf_rec *) ap_get_module_config(s->module_config, | ||
| 141 | &gnutls_module); | ||
| 142 | |||
| 143 | apr_pool_create(&tpool, p); | ||
| 144 | |||
| 145 | gnutls_dh_params_init(&dh_params); | ||
| 146 | |||
| 147 | pdata = load_params(sc_base->dh_params_file, s, tpool); | ||
| 148 | |||
| 149 | if (pdata.size != 0) { | ||
| 150 | rv = gnutls_dh_params_import_pkcs3(dh_params, &pdata, | ||
| 151 | GNUTLS_X509_FMT_PEM); | ||
| 152 | if (rv != 0) { | ||
| 153 | ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, s, | ||
| 154 | "GnuTLS: Unable to load DH Params: (%d) %s", | ||
| 155 | rv, gnutls_strerror(rv)); | ||
| 156 | exit(rv); | ||
| 157 | } | ||
| 158 | } | ||
| 159 | else { | ||
| 160 | ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, s, | ||
| 161 | "GnuTLS: Unable to load DH Params." | ||
| 162 | " Shutting Down."); | ||
| 163 | exit(-1); | ||
| 164 | } | ||
| 165 | apr_pool_clear(tpool); | ||
| 166 | |||
| 167 | gnutls_rsa_params_init(&rsa_params); | ||
| 168 | |||
| 169 | pdata = load_params(sc_base->rsa_params_file, s, tpool); | ||
| 170 | |||
| 171 | if (pdata.size != 0) { | ||
| 172 | rv = gnutls_rsa_params_import_pkcs1(rsa_params, &pdata, | ||
| 173 | GNUTLS_X509_FMT_PEM); | ||
| 174 | if (rv != 0) { | ||
| 175 | ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, s, | ||
| 176 | "GnuTLS: Unable to load RSA Params: (%d) %s", | ||
| 177 | rv, gnutls_strerror(rv)); | ||
| 178 | exit(rv); | ||
| 179 | } | ||
| 180 | } | ||
| 181 | else { | ||
| 182 | ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, s, | ||
| 183 | "GnuTLS: Unable to load RSA Params." | ||
| 184 | " Shutting Down."); | ||
| 185 | exit(-1); | ||
| 186 | } | ||
| 187 | |||
| 188 | apr_pool_destroy(tpool); | ||
| 189 | rv = mgs_cache_post_config(p, s, sc_base); | ||
| 190 | if (rv != 0) { | ||
| 191 | ap_log_error(APLOG_MARK, APLOG_STARTUP, rv, s, | ||
| 192 | "GnuTLS: Post Config for GnuTLSCache Failed." | ||
| 193 | " Shutting Down."); | ||
| 194 | exit(-1); | ||
| 195 | } | ||
| 196 | |||
| 197 | for (s = base_server; s; s = s->next) { | ||
| 198 | sc = (mgs_srvconf_rec *) ap_get_module_config(s->module_config, | ||
| 199 | &gnutls_module); | ||
| 200 | sc->cache_type = sc_base->cache_type; | ||
| 201 | sc->cache_config = sc_base->cache_config; | ||
| 202 | |||
| 203 | gnutls_certificate_set_rsa_export_params(sc->certs, | ||
| 204 | rsa_params); | ||
| 205 | gnutls_certificate_set_dh_params(sc->certs, dh_params); | ||
| 206 | |||
| 207 | if (sc->cert_x509 == NULL && sc->enabled == GNUTLS_ENABLED_TRUE) { | ||
| 208 | ap_log_error(APLOG_MARK, APLOG_EMERG, 0, s, | ||
| 209 | "[GnuTLS] - Host '%s:%d' is missing a " | ||
| 210 | "Certificate File!", | ||
| 211 | s->server_hostname, s->port); | ||
| 212 | exit(-1); | ||
| 213 | } | ||
| 214 | |||
| 215 | if (sc->privkey_x509 == NULL && sc->enabled == GNUTLS_ENABLED_TRUE) { | ||
| 216 | ap_log_error(APLOG_MARK, APLOG_EMERG, 0, s, | ||
| 217 | "[GnuTLS] - Host '%s:%d' is missing a " | ||
| 218 | "Private Key File!", | ||
| 219 | s->server_hostname, s->port); | ||
| 220 | exit(-1); | ||
| 221 | } | ||
| 222 | |||
| 223 | rv = gnutls_x509_crt_get_dn_by_oid(sc->cert_x509, | ||
| 224 | GNUTLS_OID_X520_COMMON_NAME, 0, 0, | ||
| 225 | NULL, &data_len); | ||
| 226 | |||
| 227 | if (data_len < 1) { | ||
| 228 | sc->enabled = GNUTLS_ENABLED_FALSE; | ||
| 229 | sc->cert_cn = NULL; | ||
| 230 | continue; | ||
| 231 | } | ||
| 232 | |||
| 233 | sc->cert_cn = apr_palloc(p, data_len); | ||
| 234 | rv = gnutls_x509_crt_get_dn_by_oid(sc->cert_x509, | ||
| 235 | GNUTLS_OID_X520_COMMON_NAME, 0, 0, | ||
| 236 | sc->cert_cn, &data_len); | ||
| 237 | ap_log_error(APLOG_MARK, APLOG_DEBUG, 0, | ||
| 238 | s, | ||
| 239 | "GnuTLS: sni-x509 cn: %s/%d pk: %s s: 0x%08X sc: 0x%08X", sc->cert_cn, rv, | ||
| 240 | gnutls_pk_algorithm_get_name(gnutls_x509_privkey_get_pk_algorithm(sc->privkey_x509)), | ||
| 241 | (unsigned int)s, (unsigned int)sc); | ||
| 242 | } | ||
| 243 | } | ||
| 244 | |||
| 245 | ap_add_version_component(p, "mod_gnutls/" MOD_GNUTLS_VERSION); | ||
| 246 | |||
| 247 | return OK; | ||
| 248 | } | ||
| 249 | |||
| 250 | void mgs_hook_child_init(apr_pool_t *p, server_rec *s) | ||
| 251 | { | ||
| 252 | apr_status_t rv = APR_SUCCESS; | ||
| 253 | mgs_srvconf_rec *sc = ap_get_module_config(s->module_config, | ||
| 254 | &gnutls_module); | ||
| 255 | |||
| 256 | if (sc->cache_type != mgs_cache_none) { | ||
| 257 | rv = mgs_cache_child_init(p, s, sc); | ||
| 258 | if(rv != APR_SUCCESS) { | ||
| 259 | ap_log_error(APLOG_MARK, APLOG_EMERG, rv, s, | ||
| 260 | "[GnuTLS] - Failed to run Cache Init"); | ||
| 261 | } | ||
| 262 | } | ||
| 263 | else { | ||
| 264 | ap_log_error(APLOG_MARK, APLOG_CRIT, 0, s, | ||
| 265 | "[GnuTLS] - No Cache Configured. Hint: GnuTLSCache"); | ||
| 266 | } | ||
| 267 | } | ||
| 268 | |||
| 269 | const char *mgs_hook_http_scheme(const request_rec * r) | ||
| 270 | { | ||
| 271 | mgs_srvconf_rec *sc = | ||
| 272 | (mgs_srvconf_rec *) ap_get_module_config(r->server-> | ||
| 273 | module_config, | ||
| 274 | &gnutls_module); | ||
| 275 | |||
| 276 | if (sc->enabled == GNUTLS_ENABLED_FALSE) { | ||
| 277 | return NULL; | ||
| 278 | } | ||
| 279 | |||
| 280 | return "https"; | ||
| 281 | } | ||
| 282 | |||
| 283 | apr_port_t mgs_hook_default_port(const request_rec * r) | ||
| 284 | { | ||
| 285 | mgs_srvconf_rec *sc = | ||
| 286 | (mgs_srvconf_rec *) ap_get_module_config(r->server-> | ||
| 287 | module_config, | ||
| 288 | &gnutls_module); | ||
| 289 | |||
| 290 | if (sc->enabled == GNUTLS_ENABLED_FALSE) { | ||
| 291 | return 0; | ||
| 292 | } | ||
| 293 | |||
| 294 | return 443; | ||
| 295 | } | ||
| 296 | |||
| 297 | #define MAX_HOST_LEN 255 | ||
| 298 | |||
| 299 | #if USING_2_1_RECENT | ||
| 300 | typedef struct | ||
| 301 | { | ||
| 302 | mgs_handle_t *ctxt; | ||
| 303 | gnutls_retr_st* ret; | ||
| 304 | const char* sni_name; | ||
| 305 | } vhost_cb_rec; | ||
| 306 | |||
| 307 | static int vhost_cb (void* baton, conn_rec* conn, server_rec* s) | ||
| 308 | { | ||
| 309 | mgs_srvconf_rec *tsc; | ||
| 310 | vhost_cb_rec* x = baton; | ||
| 311 | |||
| 312 | tsc = (mgs_srvconf_rec *) ap_get_module_config(s->module_config, | ||
| 313 | &gnutls_module); | ||
| 314 | |||
| 315 | if (tsc->enabled != GNUTLS_ENABLED_TRUE || tsc->cert_cn == NULL) { | ||
| 316 | return 0; | ||
| 317 | } | ||
| 318 | |||
| 319 | /* The CN can contain a * -- this will match those too. */ | ||
| 320 | if (ap_strcasecmp_match(x->sni_name, tsc->cert_cn) == 0) { | ||
| 321 | /* found a match */ | ||
| 322 | x->ret->cert.x509 = &tsc->cert_x509; | ||
| 323 | x->ret->key.x509 = tsc->privkey_x509; | ||
| 324 | #if MOD_GNUTLS_DEBUG | ||
| 325 | ap_log_error(APLOG_MARK, APLOG_DEBUG, 0, | ||
| 326 | x->ctxt->c->base_server, | ||
| 327 | "GnuTLS: Virtual Host CB: " | ||
| 328 | "'%s' == '%s'", tsc->cert_cn, x->sni_name); | ||
| 329 | #endif | ||
| 330 | /* Because we actually change the server used here, we need to reset | ||
| 331 | * things like ClientVerify. | ||
| 332 | */ | ||
| 333 | x->ctxt->sc = tsc; | ||
| 334 | /* Shit. Crap. Dammit. We *really* should rehandshake here, as our | ||
| 335 | * certificate structure *should* change when the server changes. | ||
| 336 | * acccckkkkkk. | ||
| 337 | */ | ||
| 338 | gnutls_certificate_server_set_request(x->ctxt->session, x->ctxt->sc->client_verify_mode); | ||
| 339 | return 1; | ||
| 340 | } | ||
| 341 | return 0; | ||
| 342 | } | ||
| 343 | #endif | ||
| 344 | |||
| 345 | static int cert_retrieve_fn(gnutls_session_t session, gnutls_retr_st* ret) | ||
| 346 | { | ||
| 347 | int rv; | ||
| 348 | int sni_type; | ||
| 349 | int data_len = MAX_HOST_LEN; | ||
| 350 | char sni_name[MAX_HOST_LEN]; | ||
| 351 | mgs_handle_t *ctxt; | ||
| 352 | #if USING_2_1_RECENT | ||
| 353 | vhost_cb_rec cbx; | ||
| 354 | #else | ||
| 355 | server_rec* s; | ||
| 356 | mgs_srvconf_rec *tsc; | ||
| 357 | #endif | ||
| 358 | |||
| 359 | ctxt = gnutls_transport_get_ptr(session); | ||
| 360 | |||
| 361 | sni_type = gnutls_certificate_type_get(session); | ||
| 362 | if (sni_type != GNUTLS_CRT_X509) { | ||
| 363 | /* In theory, we could support OpenPGP Certificates. Theory != code. */ | ||
| 364 | ap_log_error(APLOG_MARK, APLOG_CRIT, 0, | ||
| 365 | ctxt->c->base_server, | ||
| 366 | "GnuTLS: Only x509 Certificates are currently supported."); | ||
| 367 | return -1; | ||
| 368 | } | ||
| 369 | |||
| 370 | ret->type = GNUTLS_CRT_X509; | ||
| 371 | ret->ncerts = 1; | ||
| 372 | ret->deinit_all = 0; | ||
| 373 | |||
| 374 | rv = gnutls_server_name_get(ctxt->session, sni_name, | ||
| 375 | &data_len, &sni_type, 0); | ||
| 376 | |||
| 377 | if (rv != 0) { | ||
| 378 | goto use_default_crt; | ||
| 379 | } | ||
| 380 | |||
| 381 | if (sni_type != GNUTLS_NAME_DNS) { | ||
| 382 | ap_log_error(APLOG_MARK, APLOG_CRIT, 0, | ||
| 383 | ctxt->c->base_server, | ||
| 384 | "GnuTLS: Unknown type '%d' for SNI: " | ||
| 385 | "'%s'", sni_type, sni_name); | ||
| 386 | goto use_default_crt; | ||
| 387 | } | ||
| 388 | |||
| 389 | /** | ||
| 390 | * Code in the Core already sets up the c->base_server as the base | ||
| 391 | * for this IP/Port combo. Trust that the core did the 'right' thing. | ||
| 392 | */ | ||
| 393 | #if USING_2_1_RECENT | ||
| 394 | cbx.ctxt = ctxt; | ||
| 395 | cbx.ret = ret; | ||
| 396 | cbx.sni_name = sni_name; | ||
| 397 | |||
| 398 | rv = ap_vhost_iterate_given_conn(ctxt->c, vhost_cb, &cbx); | ||
| 399 | if (rv == 1) { | ||
| 400 | return 0; | ||
| 401 | } | ||
| 402 | #else | ||
| 403 | for (s = ap_server_conf; s; s = s->next) { | ||
| 404 | |||
| 405 | tsc = (mgs_srvconf_rec *) ap_get_module_config(s->module_config, | ||
| 406 | &gnutls_module); | ||
| 407 | if (tsc->enabled != GNUTLS_ENABLED_TRUE) { | ||
| 408 | continue; | ||
| 409 | } | ||
| 410 | #if MOD_GNUTLS_DEBUG | ||
| 411 | ap_log_error(APLOG_MARK, APLOG_DEBUG, 0, | ||
| 412 | ctxt->c->base_server, | ||
| 413 | "GnuTLS: sni-x509 cn: %s/%d pk: %s s: 0x%08X s->n: 0x%08X sc: 0x%08X", tsc->cert_cn, rv, | ||
| 414 | gnutls_pk_algorithm_get_name(gnutls_x509_privkey_get_pk_algorithm(ctxt->sc->privkey_x509)), | ||
| 415 | (unsigned int)s, (unsigned int)s->next, (unsigned int)tsc); | ||
| 416 | #endif | ||
| 417 | /* The CN can contain a * -- this will match those too. */ | ||
| 418 | if (ap_strcasecmp_match(sni_name, tsc->cert_cn) == 0) { | ||
| 419 | /* found a match */ | ||
| 420 | ret->cert.x509 = &tsc->cert_x509; | ||
| 421 | ret->key.x509 = tsc->privkey_x509; | ||
| 422 | #if MOD_GNUTLS_DEBUG | ||
| 423 | ap_log_error(APLOG_MARK, APLOG_DEBUG, 0, | ||
| 424 | ctxt->c->base_server, | ||
| 425 | "GnuTLS: Virtual Host: " | ||
| 426 | "'%s' == '%s'", tsc->cert_cn, sni_name); | ||
| 427 | #endif | ||
| 428 | ctxt->sc = tsc; | ||
| 429 | gnutls_certificate_server_set_request(ctxt->session, ctxt->sc->client_verify_mode); | ||
| 430 | return 0; | ||
| 431 | } | ||
| 432 | } | ||
| 433 | #endif | ||
| 434 | |||
| 435 | /** | ||
| 436 | * If the client does not support the Server Name Indication, give the default | ||
| 437 | * certificate for this server. | ||
| 438 | */ | ||
| 439 | use_default_crt: | ||
| 440 | ret->cert.x509 = &ctxt->sc->cert_x509; | ||
| 441 | ret->key.x509 = ctxt->sc->privkey_x509; | ||
| 442 | #if MOD_GNUTLS_DEBUG | ||
| 443 | ap_log_error(APLOG_MARK, APLOG_DEBUG, 0, | ||
| 444 | ctxt->c->base_server, | ||
| 445 | "GnuTLS: Using Default Certificate."); | ||
| 446 | #endif | ||
| 447 | return 0; | ||
| 448 | } | ||
| 449 | |||
| 450 | static mgs_handle_t* create_gnutls_handle(apr_pool_t* pool, conn_rec * c) | ||
| 451 | { | ||
| 452 | mgs_handle_t *ctxt; | ||
| 453 | mgs_srvconf_rec *sc = | ||
| 454 | (mgs_srvconf_rec *) ap_get_module_config(c->base_server-> | ||
| 455 | module_config, | ||
| 456 | &gnutls_module); | ||
| 457 | |||
| 458 | ctxt = apr_pcalloc(pool, sizeof(*ctxt)); | ||
| 459 | ctxt->c = c; | ||
| 460 | ctxt->sc = sc; | ||
| 461 | ctxt->status = 0; | ||
| 462 | |||
| 463 | ctxt->input_rc = APR_SUCCESS; | ||
| 464 | ctxt->input_bb = apr_brigade_create(c->pool, c->bucket_alloc); | ||
| 465 | ctxt->input_cbuf.length = 0; | ||
| 466 | |||
| 467 | ctxt->output_rc = APR_SUCCESS; | ||
| 468 | ctxt->output_bb = apr_brigade_create(c->pool, c->bucket_alloc); | ||
| 469 | ctxt->output_blen = 0; | ||
| 470 | ctxt->output_length = 0; | ||
| 471 | |||
| 472 | gnutls_init(&ctxt->session, GNUTLS_SERVER); | ||
| 473 | |||
| 474 | gnutls_protocol_set_priority(ctxt->session, sc->protocol); | ||
| 475 | gnutls_cipher_set_priority(ctxt->session, sc->ciphers); | ||
| 476 | gnutls_compression_set_priority(ctxt->session, sc->compression); | ||
| 477 | gnutls_kx_set_priority(ctxt->session, sc->key_exchange); | ||
| 478 | gnutls_mac_set_priority(ctxt->session, sc->macs); | ||
| 479 | gnutls_certificate_type_set_priority(ctxt->session, sc->cert_types); | ||
| 480 | |||
| 481 | mgs_cache_session_init(ctxt); | ||
| 482 | |||
| 483 | gnutls_credentials_set(ctxt->session, GNUTLS_CRD_CERTIFICATE, ctxt->sc->certs); | ||
| 484 | |||
| 485 | gnutls_certificate_server_set_retrieve_function(sc->certs, cert_retrieve_fn); | ||
| 486 | gnutls_certificate_server_set_request(ctxt->session, ctxt->sc->client_verify_mode); | ||
| 487 | return ctxt; | ||
| 488 | } | ||
| 489 | |||
| 490 | int mgs_hook_pre_connection(conn_rec * c, void *csd) | ||
| 491 | { | ||
| 492 | mgs_handle_t *ctxt; | ||
| 493 | mgs_srvconf_rec *sc = | ||
| 494 | (mgs_srvconf_rec *) ap_get_module_config(c->base_server-> | ||
| 495 | module_config, | ||
| 496 | &gnutls_module); | ||
| 497 | |||
| 498 | if (!(sc && (sc->enabled == GNUTLS_ENABLED_TRUE))) { | ||
| 499 | return DECLINED; | ||
| 500 | } | ||
| 501 | |||
| 502 | ctxt = create_gnutls_handle(c->pool, c); | ||
| 503 | |||
| 504 | ap_set_module_config(c->conn_config, &gnutls_module, ctxt); | ||
| 505 | |||
| 506 | gnutls_transport_set_pull_function(ctxt->session, | ||
| 507 | mgs_transport_read); | ||
| 508 | gnutls_transport_set_push_function(ctxt->session, | ||
| 509 | mgs_transport_write); | ||
| 510 | gnutls_transport_set_ptr(ctxt->session, ctxt); | ||
| 511 | |||
| 512 | ctxt->input_filter = ap_add_input_filter(GNUTLS_INPUT_FILTER_NAME, ctxt, | ||
| 513 | NULL, c); | ||
| 514 | ctxt->output_filter = ap_add_output_filter(GNUTLS_OUTPUT_FILTER_NAME, ctxt, | ||
| 515 | NULL, c); | ||
| 516 | |||
| 517 | return OK; | ||
| 518 | } | ||
| 519 | |||
| 520 | int mgs_hook_fixups(request_rec *r) | ||
| 521 | { | ||
| 522 | unsigned char sbuf[GNUTLS_MAX_SESSION_ID]; | ||
| 523 | char buf[GNUTLS_SESSION_ID_STRING_LEN]; | ||
| 524 | const char* tmp; | ||
| 525 | int len; | ||
| 526 | mgs_handle_t *ctxt; | ||
| 527 | apr_table_t *env = r->subprocess_env; | ||
| 528 | |||
| 529 | ctxt = ap_get_module_config(r->connection->conn_config, &gnutls_module); | ||
| 530 | |||
| 531 | if(!ctxt) { | ||
| 532 | return DECLINED; | ||
| 533 | } | ||
| 534 | |||
| 535 | apr_table_setn(env, "HTTPS", "on"); | ||
| 536 | |||
| 537 | apr_table_setn(env, "GNUTLS_VERSION_INTERFACE", MOD_GNUTLS_VERSION); | ||
| 538 | apr_table_setn(env, "GNUTLS_VERSION_LIBRARY", LIBGNUTLS_VERSION); | ||
| 539 | |||
| 540 | apr_table_setn(env, "SSL_PROTOCOL", | ||
| 541 | gnutls_protocol_get_name(gnutls_protocol_get_version(ctxt->session))); | ||
| 542 | |||
| 543 | apr_table_setn(env, "SSL_CIPHER", | ||
| 544 | gnutls_cipher_get_name(gnutls_cipher_get(ctxt->session))); | ||
| 545 | |||
| 546 | apr_table_setn(env, "SSL_CLIENT_VERIFY", "NONE"); | ||
| 547 | |||
| 548 | tmp = apr_psprintf(r->pool, "%d", | ||
| 549 | 8 * gnutls_cipher_get_key_size(gnutls_cipher_get(ctxt->session))); | ||
| 550 | |||
| 551 | apr_table_setn(env, "SSL_CIPHER_USEKEYSIZE", tmp); | ||
| 552 | |||
| 553 | apr_table_setn(env, "SSL_CIPHER_ALGKEYSIZE", tmp); | ||
| 554 | |||
| 555 | len = sizeof(sbuf); | ||
| 556 | gnutls_session_get_id(ctxt->session, sbuf, &len); | ||
| 557 | tmp = mgs_session_id2sz(sbuf, len, buf, sizeof(buf)); | ||
| 558 | apr_table_setn(env, "SSL_SESSION_ID", tmp); | ||
| 559 | |||
| 560 | return OK; | ||
| 561 | } | ||
| 562 | |||
| 563 | int mgs_hook_authz(request_rec *r) | ||
| 564 | { | ||
| 565 | int rv; | ||
| 566 | int status; | ||
| 567 | mgs_handle_t *ctxt; | ||
| 568 | mgs_dirconf_rec *dc = ap_get_module_config(r->per_dir_config, | ||
| 569 | &gnutls_module); | ||
| 570 | |||
| 571 | ctxt = ap_get_module_config(r->connection->conn_config, &gnutls_module); | ||
| 572 | |||
| 573 | if (!ctxt) { | ||
| 574 | return DECLINED; | ||
| 575 | } | ||
| 576 | |||
| 577 | if (!dc) { | ||
| 578 | dc = mgs_config_dir_create(r->pool, NULL); | ||
| 579 | } | ||
| 580 | |||
| 581 | if (dc->client_verify_mode == GNUTLS_CERT_IGNORE) { | ||
| 582 | ap_log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r, | ||
| 583 | "GnuTLS: Directory set to Ignore Client Certificate!"); | ||
| 584 | return DECLINED; | ||
| 585 | } | ||
| 586 | |||
| 587 | if (ctxt->sc->client_verify_mode < dc->client_verify_mode) { | ||
| 588 | ap_log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r, | ||
| 589 | "GnuTLS: Attempting to rehandshake with peer. %d %d", | ||
| 590 | ctxt->sc->client_verify_mode, dc->client_verify_mode); | ||
| 591 | |||
| 592 | gnutls_certificate_server_set_request(ctxt->session, | ||
| 593 | dc->client_verify_mode); | ||
| 594 | |||
| 595 | if (mgs_rehandshake(ctxt) != 0) { | ||
| 596 | return HTTP_FORBIDDEN; | ||
| 597 | } | ||
| 598 | } | ||
| 599 | else if (ctxt->sc->client_verify_mode == GNUTLS_CERT_IGNORE) { | ||
| 600 | #if MOD_GNUTLS_DEBUG | ||
| 601 | ap_log_rerror(APLOG_MARK, APLOG_INFO, 0, r, | ||
| 602 | "GnuTLS: Peer is set to IGNORE"); | ||
| 603 | #endif | ||
| 604 | return DECLINED; | ||
| 605 | } | ||
| 606 | |||
| 607 | rv = gnutls_certificate_verify_peers2(ctxt->session, &status); | ||
| 608 | |||
| 609 | if (rv < 0) { | ||
| 610 | ap_log_rerror(APLOG_MARK, APLOG_INFO, 0, r, | ||
| 611 | "GnuTLS: Failed to Verify Peer: (%d) %s", | ||
| 612 | rv, gnutls_strerror(rv)); | ||
| 613 | return HTTP_FORBIDDEN; | ||
| 614 | } | ||
| 615 | |||
| 616 | if (status < 0) { | ||
| 617 | ap_log_rerror(APLOG_MARK, APLOG_INFO, 0, r, | ||
| 618 | "GnuTLS: Peer Status is invalid."); | ||
| 619 | return HTTP_FORBIDDEN; | ||
| 620 | } | ||
| 621 | |||
| 622 | if (status & GNUTLS_CERT_SIGNER_NOT_FOUND) { | ||
| 623 | ap_log_rerror(APLOG_MARK, APLOG_INFO, 0, r, | ||
| 624 | "GnuTLS: Could not find Signer for Peer Certificate"); | ||
| 625 | } | ||
| 626 | |||
| 627 | if (status & GNUTLS_CERT_SIGNER_NOT_CA) { | ||
| 628 | ap_log_rerror(APLOG_MARK, APLOG_INFO, 0, r, | ||
| 629 | "GnuTLS: Could not find CA for Peer Certificate"); | ||
| 630 | } | ||
| 631 | |||
| 632 | if (status & GNUTLS_CERT_INVALID) { | ||
| 633 | ap_log_rerror(APLOG_MARK, APLOG_INFO, 0, r, | ||
| 634 | "GnuTLS: Peer Certificate is invalid."); | ||
| 635 | return HTTP_FORBIDDEN; | ||
| 636 | } | ||
| 637 | else if (status & GNUTLS_CERT_REVOKED) { | ||
| 638 | ap_log_rerror(APLOG_MARK, APLOG_INFO, 0, r, | ||
| 639 | "GnuTLS: Peer Certificate is revoked."); | ||
| 640 | return HTTP_FORBIDDEN; | ||
| 641 | } | ||
| 642 | |||
| 643 | /* TODO: OpenPGP Certificates */ | ||
| 644 | if (gnutls_certificate_type_get(ctxt->session) != GNUTLS_CRT_X509) { | ||
| 645 | ap_log_rerror(APLOG_MARK, APLOG_CRIT, 0, r, | ||
| 646 | "GnuTLS: Only x509 is supported for client certificates"); | ||
| 647 | return HTTP_FORBIDDEN; | ||
| 648 | } | ||
| 649 | /* TODO: Further Verification. */ | ||
| 650 | ap_log_rerror(APLOG_MARK, APLOG_CRIT, 0, r, | ||
| 651 | "GnuTLS: Verified Peer."); | ||
| 652 | return OK; | ||
| 653 | } | ||
| 654 | |||
