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source: mod_gnutls/src/gnutls_hooks.c @ 7ba803b

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Last change on this file since 7ba803b was 7ba803b, checked in by Paul Querna <chip@…>, 15 years ago
add SSL_SERVER_S_DN and SSL_SERVER_I_DN
Property mode set to `100644`
File size: 22.0 KB

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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[AP_IOBUFSIZE];
524	const char* tmp;
525	int len;
526	mgs_handle_t *ctxt;
527	int rv;
528
529	apr_table_t *env = r->subprocess_env;
530
531	ctxt = ap_get_module_config(r->connection->conn_config, &gnutls_module);
532
533	if(!ctxt) {
534	return DECLINED;
535	}
536
537	apr_table_setn(env, "HTTPS", "on");
538
539	apr_table_setn(env, "GNUTLS_VERSION_INTERFACE", MOD_GNUTLS_VERSION);
540	apr_table_setn(env, "GNUTLS_VERSION_LIBRARY", LIBGNUTLS_VERSION);
541
542	apr_table_setn(env, "SSL_PROTOCOL",
543	gnutls_protocol_get_name(gnutls_protocol_get_version(ctxt->session)));
544
545	apr_table_setn(env, "SSL_CIPHER",
546	gnutls_cipher_get_name(gnutls_cipher_get(ctxt->session)));
547
548	apr_table_setn(env, "SSL_CLIENT_VERIFY", "NONE");
549
550	tmp = apr_psprintf(r->pool, "%d",
551	8 * gnutls_cipher_get_key_size(gnutls_cipher_get(ctxt->session)));
552
553	apr_table_setn(env, "SSL_CIPHER_USEKEYSIZE", tmp);
554
555	apr_table_setn(env, "SSL_CIPHER_ALGKEYSIZE", tmp);
556
557	len = sizeof(sbuf);
558	gnutls_session_get_id(ctxt->session, sbuf, &len);
559	tmp = mgs_session_id2sz(sbuf, len, buf, sizeof(buf));
560	apr_table_setn(env, "SSL_SESSION_ID", tmp);
561
562	/* TODO: There are many other env vars that we need to add */
563	{
564	const gnutls_datum *certs;
565	gnutls_x509_crt cert;
566
567	certs = gnutls_certificate_get_ours(ctxt->session);
568	if (certs) {
569
570	rv = gnutls_x509_crt_init(&cert);
571	if (rv < 0) {
572	goto end_fixups;
573	}
574
575	rv = gnutls_x509_crt_import(cert, &certs[0], GNUTLS_X509_FMT_DER);
576	if (rv < 0) {
577	gnutls_x509_crt_deinit(cert);
578	goto end_fixups;
579	}
580
581	len = sizeof(buf);
582	if (gnutls_x509_crt_get_dn(cert, buf, &len) == 0) {
583	apr_table_setn(env, "SSL_SERVER_S_DN", buf);
584	}
585
586	len = sizeof(buf);
587	if (gnutls_x509_crt_get_issuer_dn(cert, buf, &len) == 0) {
588	apr_table_setn(env, "SSL_SERVER_I_DN", buf);
589	}
590
591	gnutls_x509_crt_deinit(cert);
592	}
593	}
594
595	end_fixups:
596	return OK;
597	}
598
599	int mgs_hook_authz(request_rec *r)
600	{
601	int rv;
602	int status;
603	mgs_handle_t *ctxt;
604	mgs_dirconf_rec *dc = ap_get_module_config(r->per_dir_config,
605	&gnutls_module);
606
607	ctxt = ap_get_module_config(r->connection->conn_config, &gnutls_module);
608
609	if (!ctxt) {
610	return DECLINED;
611	}
612
613	if (!dc) {
614	dc = mgs_config_dir_create(r->pool, NULL);
615	}
616
617	if (dc->client_verify_mode == GNUTLS_CERT_IGNORE) {
618	ap_log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r,
619	"GnuTLS: Directory set to Ignore Client Certificate!");
620	return DECLINED;
621	}
622
623	if (ctxt->sc->client_verify_mode < dc->client_verify_mode) {
624	ap_log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r,
625	"GnuTLS: Attempting to rehandshake with peer. %d %d",
626	ctxt->sc->client_verify_mode, dc->client_verify_mode);
627
628	gnutls_certificate_server_set_request(ctxt->session,
629	dc->client_verify_mode);
630
631	if (mgs_rehandshake(ctxt) != 0) {
632	return HTTP_FORBIDDEN;
633	}
634	}
635	else if (ctxt->sc->client_verify_mode == GNUTLS_CERT_IGNORE) {
636	#if MOD_GNUTLS_DEBUG
637	ap_log_rerror(APLOG_MARK, APLOG_INFO, 0, r,
638	"GnuTLS: Peer is set to IGNORE");
639	#endif
640	return DECLINED;
641	}
642
643	rv = gnutls_certificate_verify_peers2(ctxt->session, &status);
644
645	if (rv < 0) {
646	ap_log_rerror(APLOG_MARK, APLOG_INFO, 0, r,
647	"GnuTLS: Failed to Verify Peer: (%d) %s",
648	rv, gnutls_strerror(rv));
649	return HTTP_FORBIDDEN;
650	}
651
652	if (status < 0) {
653	ap_log_rerror(APLOG_MARK, APLOG_INFO, 0, r,
654	"GnuTLS: Peer Status is invalid.");
655	return HTTP_FORBIDDEN;
656	}
657
658	if (status & GNUTLS_CERT_SIGNER_NOT_FOUND) {
659	ap_log_rerror(APLOG_MARK, APLOG_INFO, 0, r,
660	"GnuTLS: Could not find Signer for Peer Certificate");
661	}
662
663	if (status & GNUTLS_CERT_SIGNER_NOT_CA) {
664	ap_log_rerror(APLOG_MARK, APLOG_INFO, 0, r,
665	"GnuTLS: Could not find CA for Peer Certificate");
666	}
667
668	if (status & GNUTLS_CERT_INVALID) {
669	ap_log_rerror(APLOG_MARK, APLOG_INFO, 0, r,
670	"GnuTLS: Peer Certificate is invalid.");
671	return HTTP_FORBIDDEN;
672	}
673	else if (status & GNUTLS_CERT_REVOKED) {
674	ap_log_rerror(APLOG_MARK, APLOG_INFO, 0, r,
675	"GnuTLS: Peer Certificate is revoked.");
676	return HTTP_FORBIDDEN;
677	}
678
679	/* TODO: OpenPGP Certificates */
680	if (gnutls_certificate_type_get(ctxt->session) != GNUTLS_CRT_X509) {
681	ap_log_rerror(APLOG_MARK, APLOG_CRIT, 0, r,
682	"GnuTLS: Only x509 is supported for client certificates");
683	return HTTP_FORBIDDEN;
684	}
685	/* TODO: Further Verification. */
686	ap_log_rerror(APLOG_MARK, APLOG_CRIT, 0, r,
687	"GnuTLS: Verified Peer.");
688	return OK;
689	}
690

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