1434 lines
54 KiB
C
1434 lines
54 KiB
C
/* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership.
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* The ASF licenses this file to You under the Apache License, Version 2.0
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* (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include <assert.h>
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#include <apr_lib.h>
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#include <apr_strings.h>
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#include <apr_network_io.h>
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#include <httpd.h>
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#include <http_core.h>
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#include <http_log.h>
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#include <http_protocol.h>
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#include <http_ssl.h>
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#include <http_vhost.h>
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#include <http_main.h>
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#include <ap_socache.h>
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#include <rustls.h>
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#include "tls_proto.h"
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#include "tls_cert.h"
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#include "tls_conf.h"
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#include "tls_core.h"
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#include "tls_ocsp.h"
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#include "tls_util.h"
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#include "tls_cache.h"
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#include "tls_var.h"
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extern module AP_MODULE_DECLARE_DATA tls_module;
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APLOG_USE_MODULE(tls);
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tls_conf_conn_t *tls_conf_conn_get(conn_rec *c)
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{
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return ap_get_module_config(c->conn_config, &tls_module);
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}
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void tls_conf_conn_set(conn_rec *c, tls_conf_conn_t *cc)
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{
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ap_set_module_config(c->conn_config, &tls_module, cc);
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}
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int tls_conn_check_ssl(conn_rec *c)
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{
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tls_conf_conn_t *cc = tls_conf_conn_get(c->master? c->master : c);
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if (TLS_CONN_ST_IS_ENABLED(cc)) {
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return OK;
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}
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return DECLINED;
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}
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static int we_listen_on(tls_conf_global_t *gc, server_rec *s, tls_conf_server_t *sc)
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{
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server_addr_rec *sa, *la;
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if (gc->tls_addresses && sc->base_server) {
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/* The base server listens to every port and may be selected via SNI */
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return 1;
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}
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for (la = gc->tls_addresses; la; la = la->next) {
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for (sa = s->addrs; sa; sa = sa->next) {
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if (la->host_port == sa->host_port
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&& la->host_addr->ipaddr_len == sa->host_addr->ipaddr_len
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&& !memcmp(la->host_addr->ipaddr_ptr,
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la->host_addr->ipaddr_ptr, (size_t)la->host_addr->ipaddr_len)) {
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/* exact match */
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return 1;
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}
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}
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}
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return 0;
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}
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static apr_status_t tls_core_free(void *data)
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{
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server_rec *base_server = (server_rec *)data;
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tls_conf_server_t *sc = tls_conf_server_get(base_server);
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if (sc && sc->global && sc->global->rustls_hello_config) {
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rustls_server_config_free(sc->global->rustls_hello_config);
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sc->global->rustls_hello_config = NULL;
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}
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tls_cache_free(base_server);
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return APR_SUCCESS;
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}
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static apr_status_t load_certified_keys(
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apr_array_header_t *keys, server_rec *s,
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apr_array_header_t *cert_specs,
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tls_cert_reg_t *cert_reg)
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{
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apr_status_t rv = APR_SUCCESS;
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const rustls_certified_key *ckey;
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tls_cert_spec_t *spec;
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int i;
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if (cert_specs && cert_specs->nelts > 0) {
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for (i = 0; i < cert_specs->nelts; ++i) {
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spec = APR_ARRAY_IDX(cert_specs, i, tls_cert_spec_t*);
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rv = tls_cert_reg_get_certified_key(cert_reg, s, spec, &ckey);
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if (APR_SUCCESS != rv) {
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ap_log_error(APLOG_MARK, APLOG_ERR, rv, s, APLOGNO(10318)
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"Failed to load certificate %d[cert=%s(%d), key=%s(%d)] for %s",
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i, spec->cert_file, (int)(spec->cert_pem? strlen(spec->cert_pem) : 0),
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spec->pkey_file, (int)(spec->pkey_pem? strlen(spec->pkey_pem) : 0),
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s->server_hostname);
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goto cleanup;
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}
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assert(ckey);
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APR_ARRAY_PUSH(keys, const rustls_certified_key*) = ckey;
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}
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}
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cleanup:
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return rv;
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}
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static apr_status_t use_local_key(
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conn_rec *c, const char *cert_pem, const char *pkey_pem)
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{
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tls_conf_conn_t *cc = tls_conf_conn_get(c);
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const rustls_certified_key *ckey = NULL;
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tls_cert_spec_t spec;
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apr_status_t rv = APR_SUCCESS;
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memset(&spec, 0, sizeof(spec));
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spec.cert_pem = cert_pem;
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spec.pkey_pem = pkey_pem;
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rv = tls_cert_load_cert_key(c->pool, &spec, NULL, &ckey);
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if (APR_SUCCESS != rv) goto cleanup;
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cc->local_keys = apr_array_make(c->pool, 2, sizeof(const rustls_certified_key*));
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APR_ARRAY_PUSH(cc->local_keys, const rustls_certified_key*) = ckey;
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ckey = NULL;
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cleanup:
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if (ckey != NULL) rustls_certified_key_free(ckey);
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return rv;
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}
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static void add_file_specs(
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apr_array_header_t *certificates,
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apr_pool_t *p,
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apr_array_header_t *cert_files,
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apr_array_header_t *key_files)
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{
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tls_cert_spec_t *spec;
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int i;
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for (i = 0; i < cert_files->nelts; ++i) {
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spec = apr_pcalloc(p, sizeof(*spec));
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spec->cert_file = APR_ARRAY_IDX(cert_files, i, const char*);
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spec->pkey_file = (i < key_files->nelts)? APR_ARRAY_IDX(key_files, i, const char*) : NULL;
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*(const tls_cert_spec_t**)apr_array_push(certificates) = spec;
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}
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}
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static apr_status_t calc_ciphers(
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apr_pool_t *pool,
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server_rec *s,
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tls_conf_global_t *gc,
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const char *proxy,
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apr_array_header_t *pref_ciphers,
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apr_array_header_t *supp_ciphers,
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const apr_array_header_t **pciphers)
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{
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apr_array_header_t *ordered_ciphers;
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const apr_array_header_t *ciphers;
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apr_array_header_t *unsupported = NULL;
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rustls_result rr = RUSTLS_RESULT_OK;
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apr_status_t rv = APR_SUCCESS;
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apr_uint16_t id;
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int i;
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/* remove all suppressed ciphers from the ones supported by rustls */
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ciphers = tls_util_array_uint16_remove(pool, gc->proto->supported_cipher_ids, supp_ciphers);
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ordered_ciphers = NULL;
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/* if preferred ciphers are actually still present in allowed_ciphers, put
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* them into `ciphers` in this order */
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for (i = 0; i < pref_ciphers->nelts; ++i) {
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id = APR_ARRAY_IDX(pref_ciphers, i, apr_uint16_t);
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ap_log_error(APLOG_MARK, APLOG_TRACE4, rv, s,
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"checking preferred cipher %s: %d",
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s->server_hostname, id);
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if (tls_util_array_uint16_contains(ciphers, id)) {
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ap_log_error(APLOG_MARK, APLOG_TRACE4, rv, s,
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"checking preferred cipher %s: %d is known",
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s->server_hostname, id);
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if (ordered_ciphers == NULL) {
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ordered_ciphers = apr_array_make(pool, ciphers->nelts, sizeof(apr_uint16_t));
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}
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APR_ARRAY_PUSH(ordered_ciphers, apr_uint16_t) = id;
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}
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else if (!tls_proto_is_cipher_supported(gc->proto, id)) {
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ap_log_error(APLOG_MARK, APLOG_TRACE4, rv, s,
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"checking preferred cipher %s: %d is unsupported",
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s->server_hostname, id);
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if (!unsupported) unsupported = apr_array_make(pool, 5, sizeof(apr_uint16_t));
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APR_ARRAY_PUSH(unsupported, apr_uint16_t) = id;
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}
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}
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/* if we found ciphers with preference among allowed_ciphers,
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* append all other allowed ciphers. */
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if (ordered_ciphers) {
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for (i = 0; i < ciphers->nelts; ++i) {
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id = APR_ARRAY_IDX(ciphers, i, apr_uint16_t);
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if (!tls_util_array_uint16_contains(ordered_ciphers, id)) {
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APR_ARRAY_PUSH(ordered_ciphers, apr_uint16_t) = id;
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}
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}
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ciphers = ordered_ciphers;
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}
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if (ciphers == gc->proto->supported_cipher_ids) {
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ciphers = NULL;
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}
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if (unsupported && unsupported->nelts) {
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ap_log_error(APLOG_MARK, APLOG_WARNING, rv, s, APLOGNO(10319)
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"Server '%s' has TLS%sCiphersPrefer configured that are not "
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"supported by rustls. These will not have an effect: %s",
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s->server_hostname, proxy,
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tls_proto_get_cipher_names(gc->proto, unsupported, pool));
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}
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if (RUSTLS_RESULT_OK != rr) {
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const char *err_descr;
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rv = tls_util_rustls_error(pool, rr, &err_descr);
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ap_log_error(APLOG_MARK, APLOG_ERR, rv, s, APLOGNO(10320)
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"Failed to configure ciphers %s: [%d] %s",
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s->server_hostname, (int)rr, err_descr);
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}
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*pciphers = (APR_SUCCESS == rv)? ciphers : NULL;
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return rv;
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}
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static apr_status_t get_server_ciphersuites(
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const apr_array_header_t **pciphersuites,
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apr_pool_t *pool, tls_conf_server_t *sc)
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{
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const apr_array_header_t *ciphers, *suites = NULL;
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apr_status_t rv = APR_SUCCESS;
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rv = calc_ciphers(pool, sc->server, sc->global,
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"", sc->tls_pref_ciphers, sc->tls_supp_ciphers,
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&ciphers);
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if (APR_SUCCESS != rv) goto cleanup;
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if (ciphers) {
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suites = tls_proto_get_rustls_suites(
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sc->global->proto, ciphers, pool);
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if (APLOGtrace2(sc->server)) {
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tls_proto_conf_t *conf = sc->global->proto;
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ap_log_error(APLOG_MARK, APLOG_TRACE2, 0, sc->server,
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"tls ciphers configured[%s]: %s",
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sc->server->server_hostname,
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tls_proto_get_cipher_names(conf, ciphers, pool));
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}
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}
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cleanup:
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*pciphersuites = (APR_SUCCESS == rv)? suites : NULL;
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return rv;
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}
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static apr_array_header_t *complete_cert_specs(
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apr_pool_t *p, tls_conf_server_t *sc)
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{
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apr_array_header_t *cert_adds, *key_adds, *specs;
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/* Take the configured certificate specifications and ask
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* around for other modules to add specifications to this server.
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* This is the way mod_md provides certificates.
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*
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* If the server then still has no cert specifications, ask
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* around for `fallback` certificates which are commonly self-signed,
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* temporary ones which let the server startup in order to
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* obtain the `real` certificates from sources like ACME.
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* Servers will fallbacks will answer all requests with 503.
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*/
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specs = apr_array_copy(p, sc->cert_specs);
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cert_adds = apr_array_make(p, 2, sizeof(const char*));
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key_adds = apr_array_make(p, 2, sizeof(const char*));
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ap_ssl_add_cert_files(sc->server, p, cert_adds, key_adds);
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ap_log_error(APLOG_MARK, APLOG_TRACE1, 0, sc->server,
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"init server: complete_cert_specs added %d certs", cert_adds->nelts);
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add_file_specs(specs, p, cert_adds, key_adds);
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if (apr_is_empty_array(specs)) {
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ap_log_error(APLOG_MARK, APLOG_TRACE1, 0, sc->server,
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"init server: no certs configured, looking for fallback");
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ap_ssl_add_fallback_cert_files(sc->server, p, cert_adds, key_adds);
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if (cert_adds->nelts > 0) {
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add_file_specs(specs, p, cert_adds, key_adds);
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sc->service_unavailable = 1;
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ap_log_error(APLOG_MARK, APLOG_INFO, 0, sc->server, APLOGNO(10321)
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"Init: %s will respond with '503 Service Unavailable' for now. There "
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"are no SSL certificates configured and no other module contributed any.",
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sc->server->server_hostname);
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}
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else if (!sc->base_server) {
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ap_log_error(APLOG_MARK, APLOG_ERR, 0, sc->server, APLOGNO(10322)
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"Init: %s has no certificates configured. Use 'TLSCertificate' to "
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"configure a certificate and key file.",
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sc->server->server_hostname);
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}
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}
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return specs;
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}
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static const rustls_certified_key *select_certified_key(
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void* userdata, const rustls_client_hello *hello)
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{
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conn_rec *c = userdata;
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tls_conf_conn_t *cc;
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tls_conf_server_t *sc;
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apr_array_header_t *keys;
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const rustls_certified_key *clone;
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rustls_result rr = RUSTLS_RESULT_OK;
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apr_status_t rv;
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ap_assert(c);
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cc = tls_conf_conn_get(c);
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ap_assert(cc);
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ap_log_cerror(APLOG_MARK, APLOG_TRACE2, 0, c, "client hello select certified key");
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if (!cc || !cc->server) goto cleanup;
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sc = tls_conf_server_get(cc->server);
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if (!sc) goto cleanup;
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cc->key = NULL;
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cc->key_cloned = 0;
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if (cc->local_keys && cc->local_keys->nelts > 0) {
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keys = cc->local_keys;
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}
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else {
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keys = sc->certified_keys;
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}
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if (!keys || keys->nelts <= 0) goto cleanup;
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rr = rustls_client_hello_select_certified_key(hello,
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(const rustls_certified_key**)keys->elts, (size_t)keys->nelts, &cc->key);
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if (RUSTLS_RESULT_OK != rr) goto cleanup;
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if (APR_SUCCESS == tls_ocsp_update_key(c, cc->key, &clone)) {
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/* got OCSP response data for it, meaning the key was cloned and we need to remember */
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cc->key_cloned = 1;
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cc->key = clone;
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}
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if (APLOGctrace2(c)) {
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const char *key_id = tls_cert_reg_get_id(sc->global->cert_reg, cc->key);
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ap_log_cerror(APLOG_MARK, APLOG_TRACE2, 0, c, APLOGNO(10323)
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"client hello selected key: %s", key_id? key_id : "unknown");
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}
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return cc->key;
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cleanup:
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if (RUSTLS_RESULT_OK != rr) {
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const char *err_descr;
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rv = tls_util_rustls_error(c->pool, rr, &err_descr);
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ap_log_cerror(APLOG_MARK, APLOG_ERR, rv, c, APLOGNO(10324)
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"Failed to select certified key: [%d] %s", (int)rr, err_descr);
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}
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return NULL;
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}
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|
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static apr_status_t server_conf_setup(
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apr_pool_t *p, apr_pool_t *ptemp, tls_conf_server_t *sc, tls_conf_global_t *gc)
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{
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apr_array_header_t *cert_specs;
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apr_status_t rv = APR_SUCCESS;
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|
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/* TODO: most code has been stripped here with the changes in rustls-ffi v0.8.0
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* and this means that any errors are only happening at connection setup, which
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* is too late.
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*/
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(void)p;
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ap_log_error(APLOG_MARK, APLOG_TRACE1, rv, sc->server,
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"init server: %s", sc->server->server_hostname);
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|
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if (sc->client_auth != TLS_CLIENT_AUTH_NONE && !sc->client_ca) {
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ap_log_error(APLOG_MARK, APLOG_ERR, 0, sc->server, APLOGNO(10325)
|
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"TLSClientAuthentication is enabled for %s, but no client CA file is set. "
|
|
"Use 'TLSClientCA <file>' to specify the trust anchors.",
|
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sc->server->server_hostname);
|
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rv = APR_EINVAL; goto cleanup;
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}
|
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|
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cert_specs = complete_cert_specs(ptemp, sc);
|
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sc->certified_keys = apr_array_make(p, 3, sizeof(rustls_certified_key *));
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rv = load_certified_keys(sc->certified_keys, sc->server, cert_specs, gc->cert_reg);
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if (APR_SUCCESS != rv) goto cleanup;
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rv = get_server_ciphersuites(&sc->ciphersuites, p, sc);
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if (APR_SUCCESS != rv) goto cleanup;
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|
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ap_log_error(APLOG_MARK, APLOG_TRACE1, rv, sc->server,
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"init server: %s with %d certificates loaded",
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sc->server->server_hostname, sc->certified_keys->nelts);
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cleanup:
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return rv;
|
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}
|
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|
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static apr_status_t get_proxy_ciphers(const apr_array_header_t **pciphersuites,
|
|
apr_pool_t *pool, tls_conf_proxy_t *pc)
|
|
{
|
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const apr_array_header_t *ciphers, *suites = NULL;
|
|
apr_status_t rv = APR_SUCCESS;
|
|
|
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rv = calc_ciphers(pool, pc->defined_in, pc->global,
|
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"", pc->proxy_pref_ciphers, pc->proxy_supp_ciphers, &ciphers);
|
|
if (APR_SUCCESS != rv) goto cleanup;
|
|
|
|
if (ciphers) {
|
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suites = tls_proto_get_rustls_suites(pc->global->proto, ciphers, pool);
|
|
/* this changed the default rustls ciphers, configure it. */
|
|
if (APLOGtrace2(pc->defined_in)) {
|
|
tls_proto_conf_t *conf = pc->global->proto;
|
|
ap_log_error(APLOG_MARK, APLOG_TRACE2, 0, pc->defined_in,
|
|
"tls proxy ciphers configured[%s]: %s",
|
|
pc->defined_in->server_hostname,
|
|
tls_proto_get_cipher_names(conf, ciphers, pool));
|
|
}
|
|
}
|
|
|
|
cleanup:
|
|
*pciphersuites = (APR_SUCCESS == rv)? suites : NULL;
|
|
return rv;
|
|
}
|
|
|
|
static apr_status_t proxy_conf_setup(
|
|
apr_pool_t *p, apr_pool_t *ptemp, tls_conf_proxy_t *pc, tls_conf_global_t *gc)
|
|
{
|
|
apr_status_t rv = APR_SUCCESS;
|
|
|
|
(void)p; (void)ptemp;
|
|
ap_assert(pc->defined_in);
|
|
pc->global = gc;
|
|
|
|
if (pc->proxy_ca && strcasecmp(pc->proxy_ca, "default")) {
|
|
ap_log_error(APLOG_MARK, APLOG_TRACE2, rv, pc->defined_in,
|
|
"proxy: will use roots in %s from %s",
|
|
pc->defined_in->server_hostname, pc->proxy_ca);
|
|
}
|
|
else {
|
|
ap_log_error(APLOG_MARK, APLOG_WARNING, rv, pc->defined_in,
|
|
"proxy: there is no TLSProxyCA configured in %s which means "
|
|
"the certificates of remote servers contacted from here will not be trusted.",
|
|
pc->defined_in->server_hostname);
|
|
}
|
|
|
|
if (pc->proxy_protocol_min > 0) {
|
|
apr_array_header_t *tls_versions;
|
|
|
|
ap_log_error(APLOG_MARK, APLOG_TRACE1, rv, pc->defined_in,
|
|
"init server: set proxy protocol min version %04x", pc->proxy_protocol_min);
|
|
tls_versions = tls_proto_create_versions_plus(
|
|
gc->proto, (apr_uint16_t)pc->proxy_protocol_min, ptemp);
|
|
if (tls_versions->nelts > 0) {
|
|
if (pc->proxy_protocol_min != APR_ARRAY_IDX(tls_versions, 0, apr_uint16_t)) {
|
|
ap_log_error(APLOG_MARK, APLOG_WARNING, 0, pc->defined_in, APLOGNO(10326)
|
|
"Init: the minimum proxy protocol version configured for %s (%04x) "
|
|
"is not supported and version %04x was selected instead.",
|
|
pc->defined_in->server_hostname, pc->proxy_protocol_min,
|
|
APR_ARRAY_IDX(tls_versions, 0, apr_uint16_t));
|
|
}
|
|
}
|
|
else {
|
|
ap_log_error(APLOG_MARK, APLOG_ERR, 0, pc->defined_in, APLOGNO(10327)
|
|
"Unable to configure the proxy protocol version for %s: "
|
|
"neither the configured minimum version (%04x), nor any higher one is "
|
|
"available.", pc->defined_in->server_hostname, pc->proxy_protocol_min);
|
|
rv = APR_ENOTIMPL; goto cleanup;
|
|
}
|
|
}
|
|
|
|
#if TLS_MACHINE_CERTS
|
|
rv = load_certified_keys(pc->machine_certified_keys, pc->defined_in,
|
|
pc->machine_cert_specs, gc->cert_reg);
|
|
if (APR_SUCCESS != rv) goto cleanup;
|
|
#endif
|
|
|
|
cleanup:
|
|
return rv;
|
|
}
|
|
|
|
static const rustls_certified_key *extract_client_hello_values(
|
|
void* userdata, const rustls_client_hello *hello)
|
|
{
|
|
conn_rec *c = userdata;
|
|
tls_conf_conn_t *cc = tls_conf_conn_get(c);
|
|
size_t i, len;
|
|
unsigned short n;
|
|
|
|
ap_log_cerror(APLOG_MARK, APLOG_TRACE2, 0, c, "extract client hello values");
|
|
if (!cc) goto cleanup;
|
|
cc->client_hello_seen = 1;
|
|
if (hello->server_name.len > 0) {
|
|
cc->sni_hostname = apr_pstrndup(c->pool, hello->server_name.data, hello->server_name.len);
|
|
ap_log_cerror(APLOG_MARK, APLOG_TRACE1, 0, c, "sni detected: %s", cc->sni_hostname);
|
|
}
|
|
else {
|
|
cc->sni_hostname = NULL;
|
|
ap_log_cerror(APLOG_MARK, APLOG_TRACE1, 0, c, "no sni from client");
|
|
}
|
|
if (APLOGctrace4(c) && hello->signature_schemes.len > 0) {
|
|
for (i = 0; i < hello->signature_schemes.len; ++i) {
|
|
n = hello->signature_schemes.data[i];
|
|
ap_log_cerror(APLOG_MARK, APLOG_TRACE4, 0, c,
|
|
"client supports signature scheme: %x", (int)n);
|
|
}
|
|
}
|
|
if ((len = rustls_slice_slice_bytes_len(hello->alpn)) > 0) {
|
|
apr_array_header_t *alpn = apr_array_make(c->pool, 5, sizeof(const char*));
|
|
const char *protocol;
|
|
ap_log_cerror(APLOG_MARK, APLOG_TRACE1, 0, c, "ALPN: client proposes %d protocols", (int)len);
|
|
for (i = 0; i < len; ++i) {
|
|
rustls_slice_bytes rs = rustls_slice_slice_bytes_get(hello->alpn, i);
|
|
protocol = apr_pstrndup(c->pool, (const char*)rs.data, rs.len);
|
|
APR_ARRAY_PUSH(alpn, const char*) = protocol;
|
|
ap_log_cerror(APLOG_MARK, APLOG_TRACE1, 0, c,
|
|
"ALPN: client proposes %d: `%s`", (int)i, protocol);
|
|
}
|
|
cc->alpn = alpn;
|
|
}
|
|
else {
|
|
ap_log_cerror(APLOG_MARK, APLOG_DEBUG, 0, c, "ALPN: no alpn proposed by client");
|
|
}
|
|
cleanup:
|
|
return NULL;
|
|
}
|
|
|
|
static apr_status_t setup_hello_config(apr_pool_t *p, server_rec *base_server, tls_conf_global_t *gc)
|
|
{
|
|
rustls_server_config_builder *builder;
|
|
rustls_result rr = RUSTLS_RESULT_OK;
|
|
apr_status_t rv = APR_SUCCESS;
|
|
|
|
builder = rustls_server_config_builder_new();
|
|
if (!builder) {
|
|
rr = RUSTLS_RESULT_PANIC; goto cleanup;
|
|
}
|
|
rustls_server_config_builder_set_hello_callback(builder, extract_client_hello_values);
|
|
gc->rustls_hello_config = rustls_server_config_builder_build(builder);
|
|
if (!gc->rustls_hello_config) {
|
|
rr = RUSTLS_RESULT_PANIC; goto cleanup;
|
|
}
|
|
|
|
cleanup:
|
|
if (RUSTLS_RESULT_OK != rr) {
|
|
const char *err_descr = NULL;
|
|
rv = tls_util_rustls_error(p, rr, &err_descr);
|
|
ap_log_error(APLOG_MARK, APLOG_ERR, rv, base_server, APLOGNO(10328)
|
|
"Failed to init generic hello config: [%d] %s", (int)rr, err_descr);
|
|
goto cleanup;
|
|
}
|
|
return rv;
|
|
}
|
|
|
|
static apr_status_t init_incoming(apr_pool_t *p, apr_pool_t *ptemp, server_rec *base_server)
|
|
{
|
|
tls_conf_server_t *sc = tls_conf_server_get(base_server);
|
|
tls_conf_global_t *gc = sc->global;
|
|
server_rec *s;
|
|
apr_status_t rv = APR_ENOMEM;
|
|
|
|
ap_log_error(APLOG_MARK, APLOG_TRACE2, 0, base_server, "tls_core_init incoming");
|
|
apr_pool_cleanup_register(p, base_server, tls_core_free,
|
|
apr_pool_cleanup_null);
|
|
|
|
rv = tls_proto_post_config(p, ptemp, base_server);
|
|
if (APR_SUCCESS != rv) goto cleanup;
|
|
|
|
for (s = base_server; s; s = s->next) {
|
|
sc = tls_conf_server_get(s);
|
|
assert(sc);
|
|
ap_assert(sc->global == gc);
|
|
|
|
/* If 'TLSEngine' has been configured, use those addresses to
|
|
* decide if we are enabled on this server. */
|
|
sc->base_server = (s == base_server);
|
|
sc->enabled = we_listen_on(gc, s, sc)? TLS_FLAG_TRUE : TLS_FLAG_FALSE;
|
|
}
|
|
|
|
rv = tls_cache_post_config(p, ptemp, base_server);
|
|
if (APR_SUCCESS != rv) goto cleanup;
|
|
|
|
rv = setup_hello_config(p, base_server, gc);
|
|
if (APR_SUCCESS != rv) goto cleanup;
|
|
|
|
/* Setup server configs and collect all certificates we use. */
|
|
gc->cert_reg = tls_cert_reg_make(p);
|
|
gc->stores = tls_cert_root_stores_make(p);
|
|
gc->verifiers = tls_cert_verifiers_make(p, gc->stores);
|
|
for (s = base_server; s; s = s->next) {
|
|
sc = tls_conf_server_get(s);
|
|
rv = tls_conf_server_apply_defaults(sc, p);
|
|
if (APR_SUCCESS != rv) goto cleanup;
|
|
if (sc->enabled != TLS_FLAG_TRUE) continue;
|
|
rv = server_conf_setup(p, ptemp, sc, gc);
|
|
if (APR_SUCCESS != rv) {
|
|
ap_log_error(APLOG_MARK, APLOG_ERR, rv, s, "server setup failed: %s",
|
|
s->server_hostname);
|
|
goto cleanup;
|
|
}
|
|
}
|
|
|
|
cleanup:
|
|
if (APR_SUCCESS != rv) {
|
|
ap_log_error(APLOG_MARK, APLOG_ERR, rv, base_server, "error during post_config");
|
|
}
|
|
return rv;
|
|
}
|
|
|
|
static apr_status_t init_outgoing(apr_pool_t *p, apr_pool_t *ptemp, server_rec *base_server)
|
|
{
|
|
tls_conf_server_t *sc = tls_conf_server_get(base_server);
|
|
tls_conf_global_t *gc = sc->global;
|
|
tls_conf_dir_t *dc;
|
|
tls_conf_proxy_t *pc;
|
|
server_rec *s;
|
|
apr_status_t rv = APR_SUCCESS;
|
|
int i;
|
|
|
|
(void)p; (void)ptemp;
|
|
(void)gc;
|
|
ap_log_error(APLOG_MARK, APLOG_TRACE2, 0, base_server, "tls_core_init outgoing");
|
|
ap_assert(gc->mod_proxy_post_config_done);
|
|
/* Collect all proxy'ing default server dir configs.
|
|
* All <Proxy> section dir_configs should already be there - if there were any. */
|
|
for (s = base_server; s; s = s->next) {
|
|
dc = tls_conf_dir_server_get(s);
|
|
rv = tls_conf_dir_apply_defaults(dc, p);
|
|
if (APR_SUCCESS != rv) goto cleanup;
|
|
if (dc->proxy_enabled != TLS_FLAG_TRUE) continue;
|
|
dc->proxy_config = tls_conf_proxy_make(p, dc, gc, s);
|
|
ap_log_error(APLOG_MARK, APLOG_TRACE3, 0, s, "%s: adding proxy_conf to globals",
|
|
s->server_hostname);
|
|
APR_ARRAY_PUSH(gc->proxy_configs, tls_conf_proxy_t*) = dc->proxy_config;
|
|
}
|
|
/* Now gc->proxy_configs contains all configurations we need to possibly
|
|
* act on for outgoing connections. */
|
|
for (i = 0; i < gc->proxy_configs->nelts; ++i) {
|
|
pc = APR_ARRAY_IDX(gc->proxy_configs, i, tls_conf_proxy_t*);
|
|
rv = proxy_conf_setup(p, ptemp, pc, gc);
|
|
if (APR_SUCCESS != rv) goto cleanup;
|
|
}
|
|
|
|
cleanup:
|
|
return rv;
|
|
}
|
|
|
|
apr_status_t tls_core_init(apr_pool_t *p, apr_pool_t *ptemp, server_rec *base_server)
|
|
{
|
|
tls_conf_server_t *sc = tls_conf_server_get(base_server);
|
|
tls_conf_global_t *gc = sc->global;
|
|
apr_status_t rv = APR_SUCCESS;
|
|
|
|
ap_assert(gc);
|
|
if (TLS_CONF_ST_INIT == gc->status) {
|
|
rv = init_incoming(p, ptemp, base_server);
|
|
if (APR_SUCCESS != rv) goto cleanup;
|
|
gc->status = TLS_CONF_ST_INCOMING_DONE;
|
|
}
|
|
if (TLS_CONF_ST_INCOMING_DONE == gc->status) {
|
|
if (!gc->mod_proxy_post_config_done) goto cleanup;
|
|
|
|
rv = init_outgoing(p, ptemp, base_server);
|
|
if (APR_SUCCESS != rv) goto cleanup;
|
|
gc->status = TLS_CONF_ST_OUTGOING_DONE;
|
|
}
|
|
if (TLS_CONF_ST_OUTGOING_DONE == gc->status) {
|
|
/* register all loaded certificates for OCSP stapling */
|
|
rv = tls_ocsp_prime_certs(gc, p, base_server);
|
|
if (APR_SUCCESS != rv) goto cleanup;
|
|
|
|
if (gc->verifiers) tls_cert_verifiers_clear(gc->verifiers);
|
|
if (gc->stores) tls_cert_root_stores_clear(gc->stores);
|
|
gc->status = TLS_CONF_ST_DONE;
|
|
}
|
|
cleanup:
|
|
return rv;
|
|
}
|
|
|
|
static apr_status_t tls_core_conn_free(void *data)
|
|
{
|
|
tls_conf_conn_t *cc = data;
|
|
|
|
/* free all rustls things we are owning. */
|
|
if (cc->rustls_connection) {
|
|
rustls_connection_free(cc->rustls_connection);
|
|
cc->rustls_connection = NULL;
|
|
}
|
|
if (cc->rustls_server_config) {
|
|
rustls_server_config_free(cc->rustls_server_config);
|
|
cc->rustls_server_config = NULL;
|
|
}
|
|
if (cc->rustls_client_config) {
|
|
rustls_client_config_free(cc->rustls_client_config);
|
|
cc->rustls_client_config = NULL;
|
|
}
|
|
if (cc->key_cloned && cc->key) {
|
|
rustls_certified_key_free(cc->key);
|
|
cc->key = NULL;
|
|
}
|
|
if (cc->local_keys) {
|
|
const rustls_certified_key *key;
|
|
int i;
|
|
|
|
for (i = 0; i < cc->local_keys->nelts; ++i) {
|
|
key = APR_ARRAY_IDX(cc->local_keys, i, const rustls_certified_key*);
|
|
rustls_certified_key_free(key);
|
|
}
|
|
apr_array_clear(cc->local_keys);
|
|
}
|
|
return APR_SUCCESS;
|
|
}
|
|
|
|
static tls_conf_conn_t *cc_get_or_make(conn_rec *c)
|
|
{
|
|
tls_conf_conn_t *cc = tls_conf_conn_get(c);
|
|
if (!cc) {
|
|
cc = apr_pcalloc(c->pool, sizeof(*cc));
|
|
cc->server = c->base_server;
|
|
cc->state = TLS_CONN_ST_INIT;
|
|
tls_conf_conn_set(c, cc);
|
|
apr_pool_cleanup_register(c->pool, cc, tls_core_conn_free,
|
|
apr_pool_cleanup_null);
|
|
}
|
|
return cc;
|
|
}
|
|
|
|
void tls_core_conn_disable(conn_rec *c)
|
|
{
|
|
tls_conf_conn_t *cc;
|
|
cc = cc_get_or_make(c);
|
|
if (cc->state == TLS_CONN_ST_INIT) {
|
|
cc->state = TLS_CONN_ST_DISABLED;
|
|
}
|
|
}
|
|
|
|
void tls_core_conn_bind(conn_rec *c, ap_conf_vector_t *dir_conf)
|
|
{
|
|
tls_conf_conn_t *cc = cc_get_or_make(c);
|
|
cc->dc = dir_conf? ap_get_module_config(dir_conf, &tls_module) : NULL;
|
|
}
|
|
|
|
|
|
static apr_status_t init_outgoing_connection(conn_rec *c)
|
|
{
|
|
tls_conf_conn_t *cc = tls_conf_conn_get(c);
|
|
tls_conf_proxy_t *pc;
|
|
const apr_array_header_t *ciphersuites = NULL;
|
|
apr_array_header_t *tls_versions = NULL;
|
|
rustls_client_config_builder *builder = NULL;
|
|
rustls_root_cert_store *ca_store = NULL;
|
|
const char *hostname = NULL, *alpn_note = NULL;
|
|
rustls_result rr = RUSTLS_RESULT_OK;
|
|
apr_status_t rv = APR_SUCCESS;
|
|
|
|
ap_assert(cc->outgoing);
|
|
ap_assert(cc->dc);
|
|
pc = cc->dc->proxy_config;
|
|
ap_assert(pc);
|
|
|
|
hostname = apr_table_get(c->notes, "proxy-request-hostname");
|
|
alpn_note = apr_table_get(c->notes, "proxy-request-alpn-protos");
|
|
ap_log_error(APLOG_MARK, APLOG_TRACE1, 0, c->base_server,
|
|
"setup_outgoing: to %s [ALPN: %s] from configuration in %s"
|
|
" using CA %s", hostname, alpn_note, pc->defined_in->server_hostname, pc->proxy_ca);
|
|
|
|
rv = get_proxy_ciphers(&ciphersuites, c->pool, pc);
|
|
if (APR_SUCCESS != rv) goto cleanup;
|
|
|
|
if (pc->proxy_protocol_min > 0) {
|
|
tls_versions = tls_proto_create_versions_plus(
|
|
pc->global->proto, (apr_uint16_t)pc->proxy_protocol_min, c->pool);
|
|
}
|
|
|
|
if (ciphersuites && ciphersuites->nelts > 0
|
|
&& tls_versions && tls_versions->nelts >= 0) {
|
|
rr = rustls_client_config_builder_new_custom(
|
|
(const struct rustls_supported_ciphersuite *const *)ciphersuites->elts,
|
|
(size_t)ciphersuites->nelts,
|
|
(const uint16_t *)tls_versions->elts, (size_t)tls_versions->nelts,
|
|
&builder);
|
|
if (RUSTLS_RESULT_OK != rr) goto cleanup;
|
|
}
|
|
else {
|
|
builder = rustls_client_config_builder_new();
|
|
if (NULL == builder) {
|
|
rv = APR_ENOMEM;
|
|
goto cleanup;
|
|
}
|
|
}
|
|
|
|
if (pc->proxy_ca && strcasecmp(pc->proxy_ca, "default")) {
|
|
rv = tls_cert_root_stores_get(pc->global->stores, pc->proxy_ca, &ca_store);
|
|
if (APR_SUCCESS != rv) goto cleanup;
|
|
rustls_client_config_builder_use_roots(builder, ca_store);
|
|
}
|
|
|
|
#if TLS_MACHINE_CERTS
|
|
if (pc->machine_certified_keys->nelts > 0) {
|
|
ap_log_error(APLOG_MARK, APLOG_TRACE1, 0, c->base_server,
|
|
"setup_outgoing: adding %d client certificate", (int)pc->machine_certified_keys->nelts);
|
|
rr = rustls_client_config_builder_set_certified_key(
|
|
builder, (const rustls_certified_key**)pc->machine_certified_keys->elts,
|
|
(size_t)pc->machine_certified_keys->nelts);
|
|
if (RUSTLS_RESULT_OK != rr) goto cleanup;
|
|
}
|
|
#endif
|
|
|
|
if (hostname) {
|
|
rustls_client_config_builder_set_enable_sni(builder, true);
|
|
}
|
|
else {
|
|
hostname = "unknown.proxy.local";
|
|
rustls_client_config_builder_set_enable_sni(builder, false);
|
|
}
|
|
|
|
if (alpn_note) {
|
|
apr_array_header_t *alpn_proposed = NULL;
|
|
char *p, *last;
|
|
apr_size_t len;
|
|
|
|
alpn_proposed = apr_array_make(c->pool, 3, sizeof(const char*));
|
|
p = apr_pstrdup(c->pool, alpn_note);
|
|
while ((p = apr_strtok(p, ", ", &last))) {
|
|
len = (apr_size_t)(last - p - (*last? 1 : 0));
|
|
if (len > 255) {
|
|
ap_log_cerror(APLOG_MARK, APLOG_ERR, 0, c, APLOGNO(10329)
|
|
"ALPN proxy protocol identifier too long: %s", p);
|
|
rv = APR_EGENERAL;
|
|
goto cleanup;
|
|
}
|
|
APR_ARRAY_PUSH(alpn_proposed, const char*) = apr_pstrndup(c->pool, p, len);
|
|
p = NULL;
|
|
}
|
|
if (alpn_proposed->nelts > 0) {
|
|
apr_array_header_t *rustls_protocols;
|
|
const char* proto;
|
|
rustls_slice_bytes bytes;
|
|
int i;
|
|
|
|
rustls_protocols = apr_array_make(c->pool, alpn_proposed->nelts, sizeof(rustls_slice_bytes));
|
|
for (i = 0; i < alpn_proposed->nelts; ++i) {
|
|
proto = APR_ARRAY_IDX(alpn_proposed, i, const char*);
|
|
bytes.data = (const unsigned char*)proto;
|
|
bytes.len = strlen(proto);
|
|
APR_ARRAY_PUSH(rustls_protocols, rustls_slice_bytes) = bytes;
|
|
}
|
|
|
|
rr = rustls_client_config_builder_set_alpn_protocols(builder,
|
|
(rustls_slice_bytes*)rustls_protocols->elts, (size_t)rustls_protocols->nelts);
|
|
if (RUSTLS_RESULT_OK != rr) goto cleanup;
|
|
|
|
ap_log_error(APLOG_MARK, APLOG_TRACE2, 0, c->base_server,
|
|
"setup_outgoing: to %s, added %d ALPN protocols from %s",
|
|
hostname, rustls_protocols->nelts, alpn_note);
|
|
}
|
|
}
|
|
|
|
cc->rustls_client_config = rustls_client_config_builder_build(builder);
|
|
builder = NULL;
|
|
|
|
rr = rustls_client_connection_new(cc->rustls_client_config, hostname, &cc->rustls_connection);
|
|
if (RUSTLS_RESULT_OK != rr) goto cleanup;
|
|
rustls_connection_set_userdata(cc->rustls_connection, c);
|
|
|
|
cleanup:
|
|
if (builder != NULL) rustls_client_config_builder_free(builder);
|
|
if (RUSTLS_RESULT_OK != rr) {
|
|
const char *err_descr = NULL;
|
|
rv = tls_util_rustls_error(c->pool, rr, &err_descr);
|
|
ap_log_error(APLOG_MARK, APLOG_ERR, rv, cc->server, APLOGNO(10330)
|
|
"Failed to init pre_session for outgoing %s to %s: [%d] %s",
|
|
cc->server->server_hostname, hostname, (int)rr, err_descr);
|
|
c->aborted = 1;
|
|
cc->state = TLS_CONN_ST_DISABLED;
|
|
goto cleanup;
|
|
}
|
|
return rv;
|
|
}
|
|
|
|
int tls_core_pre_conn_init(conn_rec *c)
|
|
{
|
|
tls_conf_server_t *sc = tls_conf_server_get(c->base_server);
|
|
tls_conf_conn_t *cc;
|
|
|
|
cc = cc_get_or_make(c);
|
|
if (cc->state == TLS_CONN_ST_INIT) {
|
|
/* Need to decide if we TLS this connection or not */
|
|
int enabled =
|
|
#if AP_MODULE_MAGIC_AT_LEAST(20120211, 109)
|
|
!c->outgoing &&
|
|
#endif
|
|
sc->enabled == TLS_FLAG_TRUE;
|
|
cc->state = enabled? TLS_CONN_ST_CLIENT_HELLO : TLS_CONN_ST_DISABLED;
|
|
cc->client_auth = sc->client_auth;
|
|
ap_log_error(APLOG_MARK, APLOG_TRACE3, 0, c->base_server,
|
|
"tls_core_conn_init: %s for tls: %s",
|
|
enabled? "enabled" : "disabled", c->base_server->server_hostname);
|
|
}
|
|
else if (cc->state == TLS_CONN_ST_DISABLED) {
|
|
ap_log_error(APLOG_MARK, APLOG_TRACE4, 0, c->base_server,
|
|
"tls_core_conn_init, not our connection: %s",
|
|
c->base_server->server_hostname);
|
|
goto cleanup;
|
|
}
|
|
|
|
cleanup:
|
|
return TLS_CONN_ST_IS_ENABLED(cc)? OK : DECLINED;
|
|
}
|
|
|
|
apr_status_t tls_core_conn_init(conn_rec *c)
|
|
{
|
|
tls_conf_server_t *sc = tls_conf_server_get(c->base_server);
|
|
tls_conf_conn_t *cc;
|
|
rustls_result rr = RUSTLS_RESULT_OK;
|
|
apr_status_t rv = APR_SUCCESS;
|
|
|
|
cc = tls_conf_conn_get(c);
|
|
if (cc && TLS_CONN_ST_IS_ENABLED(cc) && !cc->rustls_connection) {
|
|
if (cc->outgoing) {
|
|
rv = init_outgoing_connection(c);
|
|
if (APR_SUCCESS != rv) goto cleanup;
|
|
}
|
|
else {
|
|
/* Use a generic rustls_connection with its defaults, which we feed
|
|
* the first TLS bytes from the client. Its Hello message will trigger
|
|
* our callback where we can inspect the (possibly) supplied SNI and
|
|
* select another server.
|
|
*/
|
|
rr = rustls_server_connection_new(sc->global->rustls_hello_config, &cc->rustls_connection);
|
|
if (RUSTLS_RESULT_OK != rr) goto cleanup;
|
|
/* we might refuse requests on this connection, e.g. ACME challenge */
|
|
cc->service_unavailable = sc->service_unavailable;
|
|
}
|
|
rustls_connection_set_userdata(cc->rustls_connection, c);
|
|
}
|
|
|
|
cleanup:
|
|
if (RUSTLS_RESULT_OK != rr) {
|
|
const char *err_descr = NULL;
|
|
rv = tls_util_rustls_error(c->pool, rr, &err_descr);
|
|
ap_log_error(APLOG_MARK, APLOG_ERR, rv, sc->server, APLOGNO(10331)
|
|
"Failed to init TLS connection for server %s: [%d] %s",
|
|
sc->server->server_hostname, (int)rr, err_descr);
|
|
c->aborted = 1;
|
|
cc->state = TLS_CONN_ST_DISABLED;
|
|
goto cleanup;
|
|
}
|
|
return rv;
|
|
}
|
|
|
|
static int find_vhost(void *sni_hostname, conn_rec *c, server_rec *s)
|
|
{
|
|
if (tls_util_name_matches_server(sni_hostname, s)) {
|
|
tls_conf_conn_t *cc = tls_conf_conn_get(c);
|
|
cc->server = s;
|
|
return 1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static apr_status_t select_application_protocol(
|
|
conn_rec *c, server_rec *s, rustls_server_config_builder *builder)
|
|
{
|
|
tls_conf_conn_t *cc = tls_conf_conn_get(c);
|
|
const char *proposed;
|
|
rustls_result rr = RUSTLS_RESULT_OK;
|
|
apr_status_t rv = APR_SUCCESS;
|
|
|
|
/* The server always has a protocol it uses, normally "http/1.1".
|
|
* if the client, via ALPN, proposes protocols, they are in
|
|
* order of preference.
|
|
* We propose those to modules registered in the server and
|
|
* get the protocol back that someone is willing to run on this
|
|
* connection.
|
|
* If this is different from what the connection already does,
|
|
* we tell the server (and all protocol modules) to switch.
|
|
* If successful, we announce that protocol back to the client as
|
|
* our only ALPN protocol and then do the 'real' handshake.
|
|
*/
|
|
cc->application_protocol = ap_get_protocol(c);
|
|
if (cc->alpn && cc->alpn->nelts > 0) {
|
|
rustls_slice_bytes rsb;
|
|
|
|
proposed = ap_select_protocol(c, NULL, s, cc->alpn);
|
|
if (!proposed) {
|
|
ap_log_cerror(APLOG_MARK, APLOG_TRACE2, rv, c,
|
|
"ALPN: no protocol selected in server");
|
|
goto cleanup;
|
|
}
|
|
|
|
if (strcmp(proposed, cc->application_protocol)) {
|
|
ap_log_cerror(APLOG_MARK, APLOG_TRACE2, rv, c,
|
|
"ALPN: switching protocol from `%s` to `%s`", cc->application_protocol, proposed);
|
|
rv = ap_switch_protocol(c, NULL, cc->server, proposed);
|
|
if (APR_SUCCESS != rv) goto cleanup;
|
|
}
|
|
|
|
rsb.data = (const unsigned char*)proposed;
|
|
rsb.len = strlen(proposed);
|
|
rr = rustls_server_config_builder_set_alpn_protocols(builder, &rsb, 1);
|
|
if (RUSTLS_RESULT_OK != rr) goto cleanup;
|
|
|
|
cc->application_protocol = proposed;
|
|
ap_log_cerror(APLOG_MARK, APLOG_TRACE2, rv, c,
|
|
"ALPN: using connection protocol `%s`", cc->application_protocol);
|
|
|
|
/* protocol was switched, this could be a challenge protocol
|
|
* such as "acme-tls/1". Give handlers the opportunity to
|
|
* override the certificate for this connection. */
|
|
if (strcmp("h2", proposed) && strcmp("http/1.1", proposed)) {
|
|
const char *cert_pem = NULL, *key_pem = NULL;
|
|
if (ap_ssl_answer_challenge(c, cc->sni_hostname, &cert_pem, &key_pem)) {
|
|
/* With ACME we can have challenge connections to a unknown domains
|
|
* that need to be answered with a special certificate and will
|
|
* otherwise not answer any requests. See RFC 8555 */
|
|
rv = use_local_key(c, cert_pem, key_pem);
|
|
if (APR_SUCCESS != rv) goto cleanup;
|
|
|
|
cc->service_unavailable = 1;
|
|
cc->client_auth = TLS_CLIENT_AUTH_NONE;
|
|
}
|
|
}
|
|
}
|
|
|
|
cleanup:
|
|
if (rr != RUSTLS_RESULT_OK) {
|
|
const char *err_descr = NULL;
|
|
rv = tls_util_rustls_error(c->pool, rr, &err_descr);
|
|
ap_log_error(APLOG_MARK, APLOG_ERR, rv, s, APLOGNO(10332)
|
|
"Failed to init session for server %s: [%d] %s",
|
|
s->server_hostname, (int)rr, err_descr);
|
|
c->aborted = 1;
|
|
goto cleanup;
|
|
}
|
|
return rv;
|
|
}
|
|
|
|
static apr_status_t build_server_connection(rustls_connection **pconnection,
|
|
const rustls_server_config **pconfig,
|
|
conn_rec *c)
|
|
{
|
|
tls_conf_conn_t *cc = tls_conf_conn_get(c);
|
|
tls_conf_server_t *sc;
|
|
const apr_array_header_t *tls_versions = NULL;
|
|
rustls_server_config_builder *builder = NULL;
|
|
const rustls_server_config *config = NULL;
|
|
rustls_connection *rconnection = NULL;
|
|
rustls_result rr = RUSTLS_RESULT_OK;
|
|
apr_status_t rv = APR_SUCCESS;
|
|
|
|
sc = tls_conf_server_get(cc->server);
|
|
|
|
if (sc->tls_protocol_min > 0) {
|
|
ap_log_error(APLOG_MARK, APLOG_TRACE1, rv, sc->server,
|
|
"init server: set protocol min version %04x", sc->tls_protocol_min);
|
|
tls_versions = tls_proto_create_versions_plus(
|
|
sc->global->proto, (apr_uint16_t)sc->tls_protocol_min, c->pool);
|
|
if (tls_versions->nelts > 0) {
|
|
if (sc->tls_protocol_min != APR_ARRAY_IDX(tls_versions, 0, apr_uint16_t)) {
|
|
ap_log_error(APLOG_MARK, APLOG_WARNING, 0, sc->server, APLOGNO(10333)
|
|
"Init: the minimum protocol version configured for %s (%04x) "
|
|
"is not supported and version %04x was selected instead.",
|
|
sc->server->server_hostname, sc->tls_protocol_min,
|
|
APR_ARRAY_IDX(tls_versions, 0, apr_uint16_t));
|
|
}
|
|
}
|
|
else {
|
|
ap_log_error(APLOG_MARK, APLOG_ERR, 0, sc->server, APLOGNO(10334)
|
|
"Unable to configure the protocol version for %s: "
|
|
"neither the configured minimum version (%04x), nor any higher one is "
|
|
"available.", sc->server->server_hostname, sc->tls_protocol_min);
|
|
rv = APR_ENOTIMPL; goto cleanup;
|
|
}
|
|
}
|
|
else if (sc->ciphersuites && sc->ciphersuites->nelts > 0) {
|
|
/* FIXME: rustls-ffi current has not way to make a builder with ALL_PROTOCOL_VERSIONS */
|
|
tls_versions = tls_proto_create_versions_plus(sc->global->proto, 0, c->pool);
|
|
}
|
|
|
|
if (sc->ciphersuites && sc->ciphersuites->nelts > 0
|
|
&& tls_versions && tls_versions->nelts >= 0) {
|
|
rr = rustls_server_config_builder_new_custom(
|
|
(const struct rustls_supported_ciphersuite *const *)sc->ciphersuites->elts,
|
|
(size_t)sc->ciphersuites->nelts,
|
|
(const uint16_t *)tls_versions->elts, (size_t)tls_versions->nelts,
|
|
&builder);
|
|
if (RUSTLS_RESULT_OK != rr) goto cleanup;
|
|
}
|
|
else {
|
|
builder = rustls_server_config_builder_new();
|
|
if (NULL == builder) {
|
|
rv = APR_ENOMEM;
|
|
goto cleanup;
|
|
}
|
|
}
|
|
|
|
/* decide on the application protocol, this may change other
|
|
* settings like client_auth. */
|
|
rv = select_application_protocol(c, cc->server, builder);
|
|
|
|
if (cc->client_auth != TLS_CLIENT_AUTH_NONE) {
|
|
ap_assert(sc->client_ca); /* checked in server_setup */
|
|
if (cc->client_auth == TLS_CLIENT_AUTH_REQUIRED) {
|
|
const rustls_client_cert_verifier *verifier;
|
|
rv = tls_cert_client_verifiers_get(sc->global->verifiers, sc->client_ca, &verifier);
|
|
if (APR_SUCCESS != rv) goto cleanup;
|
|
rustls_server_config_builder_set_client_verifier(builder, verifier);
|
|
}
|
|
else {
|
|
const rustls_client_cert_verifier_optional *verifier;
|
|
rv = tls_cert_client_verifiers_get_optional(sc->global->verifiers, sc->client_ca, &verifier);
|
|
if (APR_SUCCESS != rv) goto cleanup;
|
|
rustls_server_config_builder_set_client_verifier_optional(builder, verifier);
|
|
}
|
|
}
|
|
|
|
rustls_server_config_builder_set_hello_callback(builder, select_certified_key);
|
|
|
|
rr = rustls_server_config_builder_set_ignore_client_order(
|
|
builder, sc->honor_client_order == TLS_FLAG_FALSE);
|
|
if (RUSTLS_RESULT_OK != rr) goto cleanup;
|
|
|
|
rv = tls_cache_init_server(builder, sc->server);
|
|
if (APR_SUCCESS != rv) goto cleanup;
|
|
|
|
config = rustls_server_config_builder_build(builder);
|
|
builder = NULL;
|
|
if (!config) {
|
|
rv = APR_ENOMEM; goto cleanup;
|
|
}
|
|
|
|
rr = rustls_server_connection_new(config, &rconnection);
|
|
if (RUSTLS_RESULT_OK != rr) goto cleanup;
|
|
rustls_connection_set_userdata(rconnection, c);
|
|
|
|
cleanup:
|
|
if (rr != RUSTLS_RESULT_OK) {
|
|
const char *err_descr = NULL;
|
|
rv = tls_util_rustls_error(c->pool, rr, &err_descr);
|
|
ap_log_error(APLOG_MARK, APLOG_DEBUG, rv, sc->server, APLOGNO(10335)
|
|
"Failed to init session for server %s: [%d] %s",
|
|
sc->server->server_hostname, (int)rr, err_descr);
|
|
}
|
|
if (APR_SUCCESS == rv) {
|
|
*pconfig = config;
|
|
*pconnection = rconnection;
|
|
ap_log_error(APLOG_MARK, APLOG_TRACE1, 0, sc->server,
|
|
"tls_core_conn_server_init done: %s",
|
|
sc->server->server_hostname);
|
|
}
|
|
else {
|
|
ap_log_error(APLOG_MARK, APLOG_ERR, rv, sc->server, APLOGNO(10336)
|
|
"Failed to init session for server %s",
|
|
sc->server->server_hostname);
|
|
c->aborted = 1;
|
|
if (config) rustls_server_config_free(config);
|
|
if (builder) rustls_server_config_builder_free(builder);
|
|
}
|
|
return rv;
|
|
}
|
|
|
|
apr_status_t tls_core_conn_seen_client_hello(conn_rec *c)
|
|
{
|
|
tls_conf_conn_t *cc = tls_conf_conn_get(c);
|
|
tls_conf_server_t *sc;
|
|
apr_status_t rv = APR_SUCCESS;
|
|
int sni_match = 0;
|
|
|
|
/* The initial rustls generic session has been fed the client hello and
|
|
* we have extracted SNI and ALPN values (so present).
|
|
* Time to select the actual server_rec and application protocol that
|
|
* will be used on this connection. */
|
|
ap_assert(cc);
|
|
sc = tls_conf_server_get(cc->server);
|
|
if (!cc->client_hello_seen) goto cleanup;
|
|
|
|
if (cc->sni_hostname) {
|
|
if (ap_vhost_iterate_given_conn(c, find_vhost, (void*)cc->sni_hostname)) {
|
|
ap_log_cerror(APLOG_MARK, APLOG_DEBUG, rv, c, APLOGNO(10337)
|
|
"vhost_init: virtual host found for SNI '%s'", cc->sni_hostname);
|
|
sni_match = 1;
|
|
}
|
|
else if (tls_util_name_matches_server(cc->sni_hostname, ap_server_conf)) {
|
|
ap_log_cerror(APLOG_MARK, APLOG_DEBUG, rv, c, APLOGNO(10338)
|
|
"vhost_init: virtual host NOT found, but base server[%s] matches SNI '%s'",
|
|
ap_server_conf->server_hostname, cc->sni_hostname);
|
|
cc->server = ap_server_conf;
|
|
sni_match = 1;
|
|
}
|
|
else if (sc->strict_sni == TLS_FLAG_FALSE) {
|
|
ap_log_cerror(APLOG_MARK, APLOG_DEBUG, rv, c, APLOGNO(10339)
|
|
"vhost_init: no virtual host found, relaxed SNI checking enabled, SNI '%s'",
|
|
cc->sni_hostname);
|
|
}
|
|
else {
|
|
ap_log_cerror(APLOG_MARK, APLOG_DEBUG, rv, c, APLOGNO(10340)
|
|
"vhost_init: no virtual host, nor base server[%s] matches SNI '%s'",
|
|
c->base_server->server_hostname, cc->sni_hostname);
|
|
cc->server = sc->global->ap_server;
|
|
rv = APR_NOTFOUND; goto cleanup;
|
|
}
|
|
}
|
|
else {
|
|
ap_log_cerror(APLOG_MARK, APLOG_DEBUG, 0, c, APLOGNO(10341)
|
|
"vhost_init: no SNI hostname provided by client");
|
|
}
|
|
|
|
/* reinit, we might have a new server selected */
|
|
sc = tls_conf_server_get(cc->server);
|
|
/* on relaxed SNI matches, we do not enforce the 503 of fallback
|
|
* certificates. */
|
|
if (!cc->service_unavailable) {
|
|
cc->service_unavailable = sni_match? sc->service_unavailable : 0;
|
|
}
|
|
|
|
/* if found or not, cc->server will be the server we use now to do
|
|
* the real handshake and, if successful, the traffic after that.
|
|
* Free the current session and create the real one for the
|
|
* selected server. */
|
|
if (cc->rustls_server_config) {
|
|
rustls_server_config_free(cc->rustls_server_config);
|
|
cc->rustls_server_config = NULL;
|
|
}
|
|
rustls_connection_free(cc->rustls_connection);
|
|
cc->rustls_connection = NULL;
|
|
|
|
rv = build_server_connection(&cc->rustls_connection, &cc->rustls_server_config, c);
|
|
|
|
cleanup:
|
|
return rv;
|
|
}
|
|
|
|
apr_status_t tls_core_conn_post_handshake(conn_rec *c)
|
|
{
|
|
tls_conf_conn_t *cc = tls_conf_conn_get(c);
|
|
tls_conf_server_t *sc = tls_conf_server_get(cc->server);
|
|
const rustls_supported_ciphersuite *rsuite;
|
|
const rustls_certificate *cert;
|
|
apr_status_t rv = APR_SUCCESS;
|
|
|
|
if (rustls_connection_is_handshaking(cc->rustls_connection)) {
|
|
rv = APR_EGENERAL;
|
|
ap_log_error(APLOG_MARK, APLOG_ERR, rv, cc->server, APLOGNO(10342)
|
|
"post handshake, but rustls claims to still be handshaking: %s",
|
|
cc->server->server_hostname);
|
|
goto cleanup;
|
|
}
|
|
|
|
cc->tls_protocol_id = rustls_connection_get_protocol_version(cc->rustls_connection);
|
|
cc->tls_protocol_name = tls_proto_get_version_name(sc->global->proto,
|
|
cc->tls_protocol_id, c->pool);
|
|
rsuite = rustls_connection_get_negotiated_ciphersuite(cc->rustls_connection);
|
|
if (!rsuite) {
|
|
rv = APR_EGENERAL;
|
|
ap_log_error(APLOG_MARK, APLOG_ERR, rv, cc->server, APLOGNO(10343)
|
|
"post handshake, but rustls does not report negotiated cipher suite: %s",
|
|
cc->server->server_hostname);
|
|
goto cleanup;
|
|
}
|
|
cc->tls_cipher_id = rustls_supported_ciphersuite_get_suite(rsuite);
|
|
cc->tls_cipher_name = tls_proto_get_cipher_name(sc->global->proto,
|
|
cc->tls_cipher_id, c->pool);
|
|
ap_log_cerror(APLOG_MARK, APLOG_TRACE1, 0, c, "post_handshake %s: %s [%s]",
|
|
cc->server->server_hostname, cc->tls_protocol_name, cc->tls_cipher_name);
|
|
|
|
cert = rustls_connection_get_peer_certificate(cc->rustls_connection, 0);
|
|
if (cert) {
|
|
size_t i = 0;
|
|
|
|
cc->peer_certs = apr_array_make(c->pool, 5, sizeof(const rustls_certificate*));
|
|
while (cert) {
|
|
APR_ARRAY_PUSH(cc->peer_certs, const rustls_certificate*) = cert;
|
|
cert = rustls_connection_get_peer_certificate(cc->rustls_connection, ++i);
|
|
}
|
|
}
|
|
if (!cc->peer_certs && sc->client_auth == TLS_CLIENT_AUTH_REQUIRED) {
|
|
ap_log_cerror(APLOG_MARK, APLOG_INFO, 0, c, APLOGNO(10344)
|
|
"A client certificate is required, but no acceptable certificate was presented.");
|
|
rv = APR_ECONNABORTED;
|
|
}
|
|
|
|
rv = tls_var_handshake_done(c);
|
|
cleanup:
|
|
return rv;
|
|
}
|
|
|
|
/**
|
|
* Return != 0, if a connection also serve requests for server <other>.
|
|
*/
|
|
static int tls_conn_compatible_for(tls_conf_conn_t *cc, server_rec *other)
|
|
{
|
|
tls_conf_server_t *oc, *sc;
|
|
const rustls_certified_key *sk, *ok;
|
|
int i;
|
|
|
|
/* - differences in certificates are the responsibility of the client.
|
|
* if it thinks the SNI server works for r->server, we are fine with that.
|
|
* - if there are differences in requirements to client certificates, we
|
|
* need to deny the request.
|
|
*/
|
|
if (!cc->server || !other) return 0;
|
|
if (cc->server == other) return 1;
|
|
oc = tls_conf_server_get(other);
|
|
if (!oc) return 0;
|
|
sc = tls_conf_server_get(cc->server);
|
|
if (!sc) return 0;
|
|
|
|
/* same certified keys used? */
|
|
if (sc->certified_keys->nelts != oc->certified_keys->nelts) return 0;
|
|
for (i = 0; i < sc->certified_keys->nelts; ++i) {
|
|
sk = APR_ARRAY_IDX(sc->certified_keys, i, const rustls_certified_key*);
|
|
ok = APR_ARRAY_IDX(oc->certified_keys, i, const rustls_certified_key*);
|
|
if (sk != ok) return 0;
|
|
}
|
|
|
|
/* If the connection TLS version is below other other min one, no */
|
|
if (oc->tls_protocol_min > 0 && cc->tls_protocol_id < oc->tls_protocol_min) return 0;
|
|
/* If the connection TLS cipher is listed as suppressed by other, no */
|
|
if (oc->tls_supp_ciphers && tls_util_array_uint16_contains(
|
|
oc->tls_supp_ciphers, cc->tls_cipher_id)) return 0;
|
|
return 1;
|
|
}
|
|
|
|
int tls_core_request_check(request_rec *r)
|
|
{
|
|
conn_rec *c = r->connection;
|
|
tls_conf_conn_t *cc = tls_conf_conn_get(c->master? c->master : c);
|
|
int rv = DECLINED; /* do not object to the request */
|
|
|
|
/* If we are not enabled on this connection, leave. We are not renegotiating.
|
|
* Otherwise:
|
|
* - service is unavailable when we have only a fallback certificate or
|
|
* when a challenge protocol is active (ACME tls-alpn-01 for example).
|
|
* - with vhosts configured and no SNI from the client, deny access.
|
|
* - are servers compatible for connection sharing?
|
|
*/
|
|
if (!TLS_CONN_ST_IS_ENABLED(cc)) goto cleanup;
|
|
|
|
ap_log_rerror(APLOG_MARK, APLOG_TRACE3, 0, r,
|
|
"tls_core_request_check[%s, %d]: %s", r->hostname,
|
|
cc? cc->service_unavailable : 2, r->the_request);
|
|
if (cc->service_unavailable) {
|
|
rv = HTTP_SERVICE_UNAVAILABLE; goto cleanup;
|
|
}
|
|
if (!cc->sni_hostname && r->connection->vhost_lookup_data) {
|
|
rv = HTTP_FORBIDDEN; goto cleanup;
|
|
}
|
|
if (!tls_conn_compatible_for(cc, r->server)) {
|
|
rv = HTTP_MISDIRECTED_REQUEST;
|
|
ap_log_rerror(APLOG_MARK, APLOG_ERR, rv, r, APLOGNO(10345)
|
|
"Connection host %s, selected via SNI, and request host %s"
|
|
" have incompatible TLS configurations.",
|
|
cc->server->server_hostname, r->hostname);
|
|
goto cleanup;
|
|
}
|
|
cleanup:
|
|
return rv;
|
|
}
|
|
|
|
apr_status_t tls_core_error(conn_rec *c, rustls_result rr, const char **perrstr)
|
|
{
|
|
tls_conf_conn_t *cc = tls_conf_conn_get(c);
|
|
apr_status_t rv;
|
|
|
|
rv = tls_util_rustls_error(c->pool, rr, perrstr);
|
|
if (cc) {
|
|
cc->last_error = rr;
|
|
cc->last_error_descr = *perrstr;
|
|
}
|
|
return rv;
|
|
}
|
|
|
|
int tls_core_setup_outgoing(conn_rec *c)
|
|
{
|
|
tls_conf_conn_t *cc;
|
|
int rv = DECLINED;
|
|
|
|
ap_log_cerror(APLOG_MARK, APLOG_TRACE2, 0, c,
|
|
"tls_core_setup_outgoing called");
|
|
#if AP_MODULE_MAGIC_AT_LEAST(20120211, 109)
|
|
if (!c->outgoing) goto cleanup;
|
|
#endif
|
|
cc = cc_get_or_make(c);
|
|
if (cc->state == TLS_CONN_ST_DISABLED) {
|
|
ap_log_cerror(APLOG_MARK, APLOG_TRACE2, 0, c,
|
|
"tls_core_setup_outgoing: already disabled");
|
|
goto cleanup;
|
|
}
|
|
if (TLS_CONN_ST_IS_ENABLED(cc)) {
|
|
/* we already handle it, allow repeated calls */
|
|
ap_log_cerror(APLOG_MARK, APLOG_TRACE2, 0, c,
|
|
"tls_core_setup_outgoing: already enabled");
|
|
rv = OK; goto cleanup;
|
|
}
|
|
cc->outgoing = 1;
|
|
if (!cc->dc) {
|
|
/* In case there is not dir_conf bound for this connection, we fallback
|
|
* to the defaults in the base server (we have no virtual host config to use) */
|
|
cc->dc = ap_get_module_config(c->base_server->lookup_defaults, &tls_module);
|
|
}
|
|
if (cc->dc->proxy_enabled != TLS_FLAG_TRUE) {
|
|
cc->state = TLS_CONN_ST_DISABLED;
|
|
ap_log_cerror(APLOG_MARK, APLOG_TRACE2, 0, c,
|
|
"tls_core_setup_outgoing: TLSProxyEngine not configured");
|
|
goto cleanup;
|
|
}
|
|
/* we handle this connection */
|
|
cc->state = TLS_CONN_ST_CLIENT_HELLO;
|
|
rv = OK;
|
|
|
|
cleanup:
|
|
ap_log_cerror(APLOG_MARK, APLOG_TRACE2, 0, c,
|
|
"tls_core_setup_outgoing returns %s", rv == OK? "OK" : "DECLINED");
|
|
return rv;
|
|
}
|