| /* Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| /* _ _ |
| * _ __ ___ ___ __| | ___ ___| | mod_ssl |
| * | '_ ` _ \ / _ \ / _` | / __/ __| | Apache Interface to OpenSSL |
| * | | | | | | (_) | (_| | \__ \__ \ | |
| * |_| |_| |_|\___/ \__,_|___|___/___/_| |
| * |_____| |
| * ssl_engine_init.c |
| * Initialization of Servers |
| */ |
| /* ``Recursive, adj.; |
| see Recursive.'' |
| -- Unknown */ |
| #include "ssl_private.h" |
| |
| /* _________________________________________________________________ |
| ** |
| ** Module Initialization |
| ** _________________________________________________________________ |
| */ |
| |
| |
| static void ssl_add_version_components(apr_pool_t *p, |
| server_rec *s) |
| { |
| char *modver = ssl_var_lookup(p, s, NULL, NULL, "SSL_VERSION_INTERFACE"); |
| char *libver = ssl_var_lookup(p, s, NULL, NULL, "SSL_VERSION_LIBRARY"); |
| char *incver = ssl_var_lookup(p, s, NULL, NULL, |
| "SSL_VERSION_LIBRARY_INTERFACE"); |
| |
| ap_add_version_component(p, modver); |
| ap_add_version_component(p, libver); |
| |
| ap_log_error(APLOG_MARK, APLOG_INFO, 0, s, |
| "%s compiled against Server: %s, Library: %s", |
| modver, AP_SERVER_BASEVERSION, incver); |
| } |
| |
| /* |
| * Per-module initialization |
| */ |
| int ssl_init_Module(apr_pool_t *p, apr_pool_t *plog, |
| apr_pool_t *ptemp, |
| server_rec *base_server) |
| { |
| SSLModConfigRec *mc = myModConfig(base_server); |
| SSLSrvConfigRec *sc; |
| server_rec *s; |
| |
| /* We initialize mc->pid per-process in the child init, |
| * but it should be initialized for startup before we |
| * call ssl_rand_seed() below. |
| */ |
| mc->pid = getpid(); |
| |
| /* |
| * Let us cleanup on restarts and exists |
| */ |
| apr_pool_cleanup_register(p, base_server, |
| ssl_init_ModuleKill, |
| apr_pool_cleanup_null); |
| |
| /* |
| * Any init round fixes the global config |
| */ |
| ssl_config_global_create(base_server); /* just to avoid problems */ |
| ssl_config_global_fix(mc); |
| |
| /* |
| * try to fix the configuration and open the dedicated SSL |
| * logfile as early as possible |
| */ |
| for (s = base_server; s; s = s->next) { |
| sc = mySrvConfig(s); |
| |
| if (sc->server) { |
| sc->server->sc = sc; |
| } |
| |
| if (sc->proxy) { |
| sc->proxy->sc = sc; |
| } |
| |
| /* |
| * Create the server host:port string because we need it a lot |
| */ |
| sc->vhost_id = ssl_util_vhostid(p, s); |
| sc->vhost_id_len = strlen(sc->vhost_id); |
| |
| if (ap_get_server_protocol(s) && |
| strcmp("https", ap_get_server_protocol(s)) == 0) { |
| sc->enabled = SSL_ENABLED_TRUE; |
| } |
| |
| /* If sc->enabled is UNSET, then SSL is optional on this vhost */ |
| /* Fix up stuff that may not have been set */ |
| if (sc->enabled == SSL_ENABLED_UNSET) { |
| sc->enabled = SSL_ENABLED_FALSE; |
| } |
| if (sc->proxy_enabled == UNSET) { |
| sc->proxy_enabled = FALSE; |
| } |
| |
| if (sc->session_cache_timeout == UNSET) { |
| sc->session_cache_timeout = SSL_SESSION_CACHE_TIMEOUT; |
| } |
| |
| if (sc->server->pphrase_dialog_type == SSL_PPTYPE_UNSET) { |
| sc->server->pphrase_dialog_type = SSL_PPTYPE_BUILTIN; |
| } |
| |
| #ifdef HAVE_FIPS |
| if (sc->fips == UNSET) { |
| sc->fips = FALSE; |
| } |
| #endif |
| } |
| |
| #if APR_HAS_THREADS |
| ssl_util_thread_setup(p); |
| #endif |
| |
| /* |
| * SSL external crypto device ("engine") support |
| */ |
| #if defined(HAVE_OPENSSL_ENGINE_H) && defined(HAVE_ENGINE_INIT) |
| ssl_init_Engine(base_server, p); |
| #endif |
| |
| ap_log_error(APLOG_MARK, APLOG_INFO, 0, s, |
| "Init: Initialized %s library", SSL_LIBRARY_NAME); |
| |
| /* |
| * Seed the Pseudo Random Number Generator (PRNG) |
| * only need ptemp here; nothing inside allocated from the pool |
| * needs to live once we return from ssl_rand_seed(). |
| */ |
| ssl_rand_seed(base_server, ptemp, SSL_RSCTX_STARTUP, "Init: "); |
| |
| #ifdef HAVE_FIPS |
| if(sc->fips) { |
| if (!FIPS_mode()) { |
| if (FIPS_mode_set(1)) { |
| ap_log_error(APLOG_MARK, APLOG_NOTICE, 0, s, |
| "Operating in SSL FIPS mode"); |
| } |
| else { |
| ap_log_error(APLOG_MARK, APLOG_EMERG, 0, s, "FIPS mode failed"); |
| ssl_log_ssl_error(APLOG_MARK, APLOG_EMERG, s); |
| ssl_die(); |
| } |
| } |
| } |
| else { |
| ap_log_error(APLOG_MARK, APLOG_DEBUG, 0, s, |
| "SSL FIPS mode disabled"); |
| } |
| #endif |
| |
| /* |
| * read server private keys/public certs into memory. |
| * decrypting any encrypted keys via configured SSLPassPhraseDialogs |
| * anything that needs to live longer than ptemp needs to also survive |
| * restarts, in which case they'll live inside s->process->pool. |
| */ |
| ssl_pphrase_Handle(base_server, ptemp); |
| |
| if (ssl_dh_InitParams(base_server)) { |
| return !OK; |
| } |
| |
| /* |
| * initialize the mutex handling |
| */ |
| if (!ssl_mutex_init(base_server, p)) { |
| return HTTP_INTERNAL_SERVER_ERROR; |
| } |
| |
| /* |
| * initialize session caching |
| */ |
| ssl_scache_init(base_server, p); |
| |
| /* |
| * initialize servers |
| */ |
| ap_log_error(APLOG_MARK, APLOG_INFO, 0, base_server, |
| "Init: Initializing (virtual) servers for SSL"); |
| |
| for (s = base_server; s; s = s->next) { |
| sc = mySrvConfig(s); |
| /* |
| * Either now skip this server when SSL is disabled for |
| * it or give out some information about what we're |
| * configuring. |
| */ |
| |
| /* |
| * Read the server certificate and key |
| */ |
| ssl_init_ConfigureServer(s, p, ptemp, sc); |
| } |
| |
| /* |
| * Configuration consistency checks |
| */ |
| ssl_init_CheckServers(base_server, ptemp); |
| |
| /* |
| * Announce mod_ssl and SSL library in HTTP Server field |
| * as ``mod_ssl/X.X.X OpenSSL/X.X.X'' |
| */ |
| ssl_add_version_components(p, base_server); |
| |
| SSL_init_app_data2_idx(); /* for SSL_get_app_data2() at request time */ |
| |
| return OK; |
| } |
| |
| /* |
| * Support for external a Crypto Device ("engine"), usually |
| * a hardware accellerator card for crypto operations. |
| */ |
| #if defined(HAVE_OPENSSL_ENGINE_H) && defined(HAVE_ENGINE_INIT) |
| void ssl_init_Engine(server_rec *s, apr_pool_t *p) |
| { |
| SSLModConfigRec *mc = myModConfig(s); |
| ENGINE *e; |
| |
| if (mc->szCryptoDevice) { |
| if (!(e = ENGINE_by_id(mc->szCryptoDevice))) { |
| ap_log_error(APLOG_MARK, APLOG_ERR, 0, s, |
| "Init: Failed to load Crypto Device API `%s'", |
| mc->szCryptoDevice); |
| ssl_log_ssl_error(APLOG_MARK, APLOG_ERR, s); |
| ssl_die(); |
| } |
| |
| if (strEQ(mc->szCryptoDevice, "chil")) { |
| ENGINE_ctrl(e, ENGINE_CTRL_CHIL_SET_FORKCHECK, 1, 0, 0); |
| } |
| |
| if (!ENGINE_set_default(e, ENGINE_METHOD_ALL)) { |
| ap_log_error(APLOG_MARK, APLOG_ERR, 0, s, |
| "Init: Failed to enable Crypto Device API `%s'", |
| mc->szCryptoDevice); |
| ssl_log_ssl_error(APLOG_MARK, APLOG_ERR, s); |
| ssl_die(); |
| } |
| ap_log_error(APLOG_MARK, APLOG_INFO, 0, s, |
| "Init: loaded Crypto Device API `%s'", |
| mc->szCryptoDevice); |
| |
| ENGINE_free(e); |
| } |
| } |
| #endif |
| |
| static void ssl_init_server_check(server_rec *s, |
| apr_pool_t *p, |
| apr_pool_t *ptemp, |
| modssl_ctx_t *mctx) |
| { |
| /* |
| * check for important parameters and the |
| * possibility that the user forgot to set them. |
| */ |
| if (!mctx->pks->cert_files[0]) { |
| ap_log_error(APLOG_MARK, APLOG_ERR, 0, s, |
| "No SSL Certificate set [hint: SSLCertificateFile]"); |
| ssl_die(); |
| } |
| |
| /* |
| * Check for problematic re-initializations |
| */ |
| if (mctx->pks->certs[SSL_AIDX_RSA] || |
| mctx->pks->certs[SSL_AIDX_DSA] |
| #ifndef OPENSSL_NO_EC |
| || mctx->pks->certs[SSL_AIDX_ECC] |
| #endif |
| ) |
| { |
| ap_log_error(APLOG_MARK, APLOG_ERR, 0, s, |
| "Illegal attempt to re-initialise SSL for server " |
| "(SSLEngine On should go in the VirtualHost, not in global scope.)"); |
| ssl_die(); |
| } |
| } |
| |
| #ifndef OPENSSL_NO_TLSEXT |
| static void ssl_init_ctx_tls_extensions(server_rec *s, |
| apr_pool_t *p, |
| apr_pool_t *ptemp, |
| modssl_ctx_t *mctx) |
| { |
| /* |
| * Configure TLS extensions support |
| */ |
| ap_log_error(APLOG_MARK, APLOG_DEBUG, 0, s, |
| "Configuring TLS extension handling"); |
| |
| /* |
| * Server name indication (SNI) |
| */ |
| if (!SSL_CTX_set_tlsext_servername_callback(mctx->ssl_ctx, |
| ssl_callback_ServerNameIndication) || |
| !SSL_CTX_set_tlsext_servername_arg(mctx->ssl_ctx, mctx)) { |
| ap_log_error(APLOG_MARK, APLOG_ERR, 0, s, |
| "Unable to initialize TLS servername extension " |
| "callback (incompatible OpenSSL version?)"); |
| ssl_log_ssl_error(APLOG_MARK, APLOG_ERR, s); |
| ssl_die(); |
| } |
| } |
| #endif |
| |
| static void ssl_init_ctx_protocol(server_rec *s, |
| apr_pool_t *p, |
| apr_pool_t *ptemp, |
| modssl_ctx_t *mctx) |
| { |
| SSL_CTX *ctx = NULL; |
| MODSSL_SSL_METHOD_CONST SSL_METHOD *method = NULL; |
| char *cp; |
| int protocol = mctx->protocol; |
| SSLSrvConfigRec *sc = mySrvConfig(s); |
| |
| /* |
| * Create the new per-server SSL context |
| */ |
| if (protocol == SSL_PROTOCOL_NONE) { |
| ap_log_error(APLOG_MARK, APLOG_ERR, 0, s, |
| "No SSL protocols available [hint: SSLProtocol]"); |
| ssl_die(); |
| } |
| |
| cp = apr_pstrcat(p, |
| #ifndef OPENSSL_NO_SSL2 |
| (protocol & SSL_PROTOCOL_SSLV2 ? "SSLv2, " : ""), |
| #endif |
| #ifndef OPENSSL_NO_SSL3 |
| (protocol & SSL_PROTOCOL_SSLV3 ? "SSLv3, " : ""), |
| #endif |
| (protocol & SSL_PROTOCOL_TLSV1 ? "TLSv1, " : ""), |
| #ifdef HAVE_TLSV1_X |
| (protocol & SSL_PROTOCOL_TLSV1_1 ? "TLSv1.1, " : ""), |
| (protocol & SSL_PROTOCOL_TLSV1_2 ? "TLSv1.2, " : ""), |
| #endif |
| NULL); |
| cp[strlen(cp)-2] = NUL; |
| |
| ap_log_error(APLOG_MARK, APLOG_DEBUG, 0, s, |
| "Creating new SSL context (protocols: %s)", cp); |
| |
| #ifndef OPENSSL_NO_SSL2 |
| if (protocol == SSL_PROTOCOL_SSLV2) { |
| method = mctx->pkp ? |
| SSLv2_client_method() : /* proxy */ |
| SSLv2_server_method(); /* server */ |
| } |
| else |
| #endif |
| #ifndef OPENSSL_NO_SSL3 |
| if (protocol == SSL_PROTOCOL_SSLV3) { |
| method = mctx->pkp ? |
| SSLv3_client_method() : /* proxy */ |
| SSLv3_server_method(); /* server */ |
| } |
| else |
| #endif |
| if (protocol == SSL_PROTOCOL_TLSV1) { |
| method = mctx->pkp ? |
| TLSv1_client_method() : /* proxy */ |
| TLSv1_server_method(); /* server */ |
| } |
| else |
| #ifdef HAVE_TLSV1_X |
| if (protocol == SSL_PROTOCOL_TLSV1_1) { |
| method = mctx->pkp ? |
| TLSv1_1_client_method() : /* proxy */ |
| TLSv1_1_server_method(); /* server */ |
| } |
| else if (protocol == SSL_PROTOCOL_TLSV1_2) { |
| method = mctx->pkp ? |
| TLSv1_2_client_method() : /* proxy */ |
| TLSv1_2_server_method(); /* server */ |
| } |
| else |
| #endif |
| { |
| method = mctx->pkp ? |
| SSLv23_client_method() : /* proxy */ |
| SSLv23_server_method(); /* server */ |
| } |
| ctx = SSL_CTX_new(method); |
| |
| mctx->ssl_ctx = ctx; |
| |
| SSL_CTX_set_options(ctx, SSL_OP_ALL); |
| |
| #ifndef OPENSSL_NO_SSL2 |
| if (!(protocol & SSL_PROTOCOL_SSLV2)) { |
| SSL_CTX_set_options(ctx, SSL_OP_NO_SSLv2); |
| } |
| #endif |
| |
| #ifndef OPENSSL_NO_SSL3 |
| if (!(protocol & SSL_PROTOCOL_SSLV3)) { |
| SSL_CTX_set_options(ctx, SSL_OP_NO_SSLv3); |
| } |
| #endif |
| |
| if (!(protocol & SSL_PROTOCOL_TLSV1)) { |
| SSL_CTX_set_options(ctx, SSL_OP_NO_TLSv1); |
| } |
| |
| #ifdef HAVE_TLSV1_X |
| if (!(protocol & SSL_PROTOCOL_TLSV1_1)) { |
| SSL_CTX_set_options(ctx, SSL_OP_NO_TLSv1_1); |
| } |
| |
| if (!(protocol & SSL_PROTOCOL_TLSV1_2)) { |
| SSL_CTX_set_options(ctx, SSL_OP_NO_TLSv1_2); |
| } |
| #endif |
| |
| #ifdef SSL_OP_CIPHER_SERVER_PREFERENCE |
| if (sc->cipher_server_pref == TRUE) { |
| SSL_CTX_set_options(ctx, SSL_OP_CIPHER_SERVER_PREFERENCE); |
| } |
| #endif |
| |
| |
| #ifndef OPENSSL_NO_COMP |
| if (sc->compression != TRUE) { |
| #ifdef SSL_OP_NO_COMPRESSION |
| /* OpenSSL >= 1.0 only */ |
| SSL_CTX_set_options(ctx, SSL_OP_NO_COMPRESSION); |
| #elif OPENSSL_VERSION_NUMBER >= 0x00908000L |
| sk_SSL_COMP_zero(SSL_COMP_get_compression_methods()); |
| #endif |
| } |
| #endif |
| |
| #ifdef SSL_OP_NO_TICKET |
| /* |
| * Configure using RFC 5077 TLS session tickets |
| * for session resumption. |
| */ |
| if (sc->session_tickets == FALSE) { |
| SSL_CTX_set_options(ctx, SSL_OP_NO_TICKET); |
| } |
| #endif |
| |
| #ifdef SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION |
| if (sc->insecure_reneg == TRUE) { |
| SSL_CTX_set_options(ctx, SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION); |
| } |
| #endif |
| |
| SSL_CTX_set_app_data(ctx, s); |
| |
| /* |
| * Configure additional context ingredients |
| */ |
| SSL_CTX_set_options(ctx, SSL_OP_SINGLE_DH_USE); |
| #ifndef OPENSSL_NO_EC |
| SSL_CTX_set_options(ctx, SSL_OP_SINGLE_ECDH_USE); |
| #endif |
| |
| #ifdef SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION |
| /* |
| * Disallow a session from being resumed during a renegotiation, |
| * so that an acceptable cipher suite can be negotiated. |
| */ |
| SSL_CTX_set_options(ctx, SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION); |
| #endif |
| } |
| |
| static void ssl_init_ctx_session_cache(server_rec *s, |
| apr_pool_t *p, |
| apr_pool_t *ptemp, |
| modssl_ctx_t *mctx) |
| { |
| SSL_CTX *ctx = mctx->ssl_ctx; |
| SSLModConfigRec *mc = myModConfig(s); |
| long cache_mode = SSL_SESS_CACHE_OFF; |
| if (mc->nSessionCacheMode != SSL_SCMODE_NONE) { |
| /* SSL_SESS_CACHE_NO_INTERNAL will force OpenSSL |
| * to ignore process local-caching and |
| * to always get/set/delete sessions using mod_ssl's callbacks. |
| */ |
| cache_mode = SSL_SESS_CACHE_SERVER|SSL_SESS_CACHE_NO_INTERNAL; |
| } |
| |
| SSL_CTX_set_session_cache_mode(ctx, cache_mode); |
| |
| SSL_CTX_sess_set_new_cb(ctx, ssl_callback_NewSessionCacheEntry); |
| SSL_CTX_sess_set_get_cb(ctx, ssl_callback_GetSessionCacheEntry); |
| SSL_CTX_sess_set_remove_cb(ctx, ssl_callback_DelSessionCacheEntry); |
| } |
| |
| static void ssl_init_ctx_callbacks(server_rec *s, |
| apr_pool_t *p, |
| apr_pool_t *ptemp, |
| modssl_ctx_t *mctx) |
| { |
| SSL_CTX *ctx = mctx->ssl_ctx; |
| |
| SSL_CTX_set_tmp_dh_callback(ctx, ssl_callback_TmpDH); |
| |
| SSL_CTX_set_info_callback(ctx, ssl_callback_Info); |
| } |
| |
| static void ssl_init_ctx_verify(server_rec *s, |
| apr_pool_t *p, |
| apr_pool_t *ptemp, |
| modssl_ctx_t *mctx) |
| { |
| SSL_CTX *ctx = mctx->ssl_ctx; |
| |
| int verify = SSL_VERIFY_NONE; |
| STACK_OF(X509_NAME) *ca_list; |
| |
| if (mctx->auth.verify_mode == SSL_CVERIFY_UNSET) { |
| mctx->auth.verify_mode = SSL_CVERIFY_NONE; |
| } |
| |
| if (mctx->auth.verify_depth == UNSET) { |
| mctx->auth.verify_depth = 1; |
| } |
| |
| /* |
| * Configure callbacks for SSL context |
| */ |
| if (mctx->auth.verify_mode == SSL_CVERIFY_REQUIRE) { |
| verify |= SSL_VERIFY_PEER_STRICT; |
| } |
| |
| if ((mctx->auth.verify_mode == SSL_CVERIFY_OPTIONAL) || |
| (mctx->auth.verify_mode == SSL_CVERIFY_OPTIONAL_NO_CA)) |
| { |
| verify |= SSL_VERIFY_PEER; |
| } |
| |
| SSL_CTX_set_verify(ctx, verify, ssl_callback_SSLVerify); |
| |
| /* |
| * Configure Client Authentication details |
| */ |
| if (mctx->auth.ca_cert_file || mctx->auth.ca_cert_path) { |
| ap_log_error(APLOG_MARK, APLOG_DEBUG, 0, s, |
| "Configuring client authentication"); |
| |
| if (!SSL_CTX_load_verify_locations(ctx, |
| MODSSL_PCHAR_CAST mctx->auth.ca_cert_file, |
| MODSSL_PCHAR_CAST mctx->auth.ca_cert_path)) |
| { |
| ap_log_error(APLOG_MARK, APLOG_ERR, 0, s, |
| "Unable to configure verify locations " |
| "for client authentication"); |
| ssl_log_ssl_error(APLOG_MARK, APLOG_ERR, s); |
| ssl_die(); |
| } |
| |
| if (mctx->pks && (mctx->pks->ca_name_file || mctx->pks->ca_name_path)) { |
| ca_list = ssl_init_FindCAList(s, ptemp, |
| mctx->pks->ca_name_file, |
| mctx->pks->ca_name_path); |
| } else |
| ca_list = ssl_init_FindCAList(s, ptemp, |
| mctx->auth.ca_cert_file, |
| mctx->auth.ca_cert_path); |
| if (!ca_list) { |
| ap_log_error(APLOG_MARK, APLOG_ERR, 0, s, |
| "Unable to determine list of acceptable " |
| "CA certificates for client authentication"); |
| ssl_die(); |
| } |
| |
| SSL_CTX_set_client_CA_list(ctx, ca_list); |
| } |
| |
| /* |
| * Give a warning when no CAs were configured but client authentication |
| * should take place. This cannot work. |
| */ |
| if (mctx->auth.verify_mode == SSL_CVERIFY_REQUIRE) { |
| ca_list = SSL_CTX_get_client_CA_list(ctx); |
| |
| if (sk_X509_NAME_num(ca_list) == 0) { |
| ap_log_error(APLOG_MARK, APLOG_WARNING, 0, s, |
| "Init: Oops, you want to request client " |
| "authentication, but no CAs are known for " |
| "verification!? [Hint: SSLCACertificate*]"); |
| } |
| } |
| } |
| |
| static void ssl_init_ctx_cipher_suite(server_rec *s, |
| apr_pool_t *p, |
| apr_pool_t *ptemp, |
| modssl_ctx_t *mctx) |
| { |
| SSL_CTX *ctx = mctx->ssl_ctx; |
| const char *suite; |
| |
| /* |
| * Configure SSL Cipher Suite. Always disable NULL and export ciphers, |
| * see also ssl_engine_config.c:ssl_cmd_SSLCipherSuite(). |
| * OpenSSL's SSL_DEFAULT_CIPHER_LIST includes !aNULL:!eNULL from 0.9.8f, |
| * and !EXP from 0.9.8zf/1.0.1m/1.0.2a, so prepend them while we support |
| * earlier versions. |
| */ |
| suite = mctx->auth.cipher_suite ? mctx->auth.cipher_suite : |
| apr_pstrcat(ptemp, "!aNULL:!eNULL:!EXP:", SSL_DEFAULT_CIPHER_LIST, |
| NULL); |
| |
| ap_log_error(APLOG_MARK, APLOG_DEBUG, 0, s, |
| "Configuring permitted SSL ciphers [%s]", |
| suite); |
| |
| if (!SSL_CTX_set_cipher_list(ctx, MODSSL_PCHAR_CAST suite)) { |
| ap_log_error(APLOG_MARK, APLOG_ERR, 0, s, |
| "Unable to configure permitted SSL ciphers"); |
| ssl_log_ssl_error(APLOG_MARK, APLOG_ERR, s); |
| ssl_die(); |
| } |
| } |
| |
| static void ssl_init_ctx_crl(server_rec *s, |
| apr_pool_t *p, |
| apr_pool_t *ptemp, |
| modssl_ctx_t *mctx) |
| { |
| /* |
| * Configure Certificate Revocation List (CRL) Details |
| */ |
| |
| if (!(mctx->crl_file || mctx->crl_path)) { |
| return; |
| } |
| |
| ap_log_error(APLOG_MARK, APLOG_DEBUG, 0, s, |
| "Configuring certificate revocation facility"); |
| |
| mctx->crl = |
| SSL_X509_STORE_create((char *)mctx->crl_file, |
| (char *)mctx->crl_path); |
| |
| if (!mctx->crl) { |
| ap_log_error(APLOG_MARK, APLOG_ERR, 0, s, |
| "Unable to configure X.509 CRL storage " |
| "for certificate revocation"); |
| ssl_log_ssl_error(APLOG_MARK, APLOG_ERR, s); |
| ssl_die(); |
| } |
| } |
| |
| static void ssl_init_ctx_cert_chain(server_rec *s, |
| apr_pool_t *p, |
| apr_pool_t *ptemp, |
| modssl_ctx_t *mctx) |
| { |
| BOOL skip_first = FALSE; |
| int i, n; |
| const char *chain = mctx->cert_chain; |
| |
| /* |
| * Optionally configure extra server certificate chain certificates. |
| * This is usually done by OpenSSL automatically when one of the |
| * server cert issuers are found under SSLCACertificatePath or in |
| * SSLCACertificateFile. But because these are intended for client |
| * authentication it can conflict. For instance when you use a |
| * Global ID server certificate you've to send out the intermediate |
| * CA certificate, too. When you would just configure this with |
| * SSLCACertificateFile and also use client authentication mod_ssl |
| * would accept all clients also issued by this CA. Obviously this |
| * isn't what we want in this situation. So this feature here exists |
| * to allow one to explicity configure CA certificates which are |
| * used only for the server certificate chain. |
| */ |
| if (!chain) { |
| return; |
| } |
| |
| for (i = 0; (i < SSL_AIDX_MAX) && mctx->pks->cert_files[i]; i++) { |
| if (strEQ(mctx->pks->cert_files[i], chain)) { |
| skip_first = TRUE; |
| break; |
| } |
| } |
| |
| ERR_clear_error(); |
| n = SSL_CTX_use_certificate_chain(mctx->ssl_ctx, |
| (char *)chain, |
| skip_first, NULL); |
| if (n < 0) { |
| ap_log_error(APLOG_MARK, APLOG_ERR, 0, s, |
| "Failed to configure CA certificate chain!"); |
| ssl_die(); |
| } |
| |
| ap_log_error(APLOG_MARK, APLOG_DEBUG, 0, s, |
| "Configuring server certificate chain " |
| "(%d CA certificate%s)", |
| n, n == 1 ? "" : "s"); |
| } |
| |
| static void ssl_init_ctx(server_rec *s, |
| apr_pool_t *p, |
| apr_pool_t *ptemp, |
| modssl_ctx_t *mctx) |
| { |
| ssl_init_ctx_protocol(s, p, ptemp, mctx); |
| |
| ssl_init_ctx_session_cache(s, p, ptemp, mctx); |
| |
| ssl_init_ctx_callbacks(s, p, ptemp, mctx); |
| |
| ssl_init_ctx_verify(s, p, ptemp, mctx); |
| |
| ssl_init_ctx_cipher_suite(s, p, ptemp, mctx); |
| |
| ssl_init_ctx_crl(s, p, ptemp, mctx); |
| |
| if (mctx->pks) { |
| /* XXX: proxy support? */ |
| ssl_init_ctx_cert_chain(s, p, ptemp, mctx); |
| #ifndef OPENSSL_NO_TLSEXT |
| ssl_init_ctx_tls_extensions(s, p, ptemp, mctx); |
| #endif |
| } |
| } |
| |
| static int ssl_server_import_cert(server_rec *s, |
| modssl_ctx_t *mctx, |
| const char *id, |
| int idx) |
| { |
| SSLModConfigRec *mc = myModConfig(s); |
| ssl_asn1_t *asn1; |
| MODSSL_D2I_X509_CONST unsigned char *ptr; |
| const char *type = ssl_asn1_keystr(idx); |
| X509 *cert; |
| |
| if (!(asn1 = ssl_asn1_table_get(mc->tPublicCert, id))) { |
| return FALSE; |
| } |
| |
| ap_log_error(APLOG_MARK, APLOG_DEBUG, 0, s, |
| "Configuring %s server certificate", type); |
| |
| ptr = asn1->cpData; |
| if (!(cert = d2i_X509(NULL, &ptr, asn1->nData))) { |
| ap_log_error(APLOG_MARK, APLOG_ERR, 0, s, |
| "Unable to import %s server certificate", type); |
| ssl_log_ssl_error(APLOG_MARK, APLOG_ERR, s); |
| ssl_die(); |
| } |
| |
| if (SSL_CTX_use_certificate(mctx->ssl_ctx, cert) <= 0) { |
| ap_log_error(APLOG_MARK, APLOG_ERR, 0, s, |
| "Unable to configure %s server certificate", type); |
| ssl_log_ssl_error(APLOG_MARK, APLOG_ERR, s); |
| ssl_die(); |
| } |
| |
| mctx->pks->certs[idx] = cert; |
| |
| return TRUE; |
| } |
| |
| static int ssl_server_import_key(server_rec *s, |
| modssl_ctx_t *mctx, |
| const char *id, |
| int idx) |
| { |
| SSLModConfigRec *mc = myModConfig(s); |
| ssl_asn1_t *asn1; |
| MODSSL_D2I_PrivateKey_CONST unsigned char *ptr; |
| const char *type = ssl_asn1_keystr(idx); |
| int pkey_type; |
| EVP_PKEY *pkey; |
| |
| #ifndef OPENSSL_NO_EC |
| if (idx == SSL_AIDX_ECC) |
| pkey_type = EVP_PKEY_EC; |
| else |
| #endif |
| pkey_type = (idx == SSL_AIDX_RSA) ? EVP_PKEY_RSA : EVP_PKEY_DSA; |
| |
| if (!(asn1 = ssl_asn1_table_get(mc->tPrivateKey, id))) { |
| return FALSE; |
| } |
| |
| ap_log_error(APLOG_MARK, APLOG_DEBUG, 0, s, |
| "Configuring %s server private key", type); |
| |
| ptr = asn1->cpData; |
| if (!(pkey = d2i_PrivateKey(pkey_type, NULL, &ptr, asn1->nData))) |
| { |
| ap_log_error(APLOG_MARK, APLOG_ERR, 0, s, |
| "Unable to import %s server private key", type); |
| ssl_log_ssl_error(APLOG_MARK, APLOG_ERR, s); |
| ssl_die(); |
| } |
| |
| if (SSL_CTX_use_PrivateKey(mctx->ssl_ctx, pkey) <= 0) { |
| ap_log_error(APLOG_MARK, APLOG_ERR, 0, s, |
| "Unable to configure %s server private key", type); |
| ssl_log_ssl_error(APLOG_MARK, APLOG_ERR, s); |
| ssl_die(); |
| } |
| |
| /* |
| * XXX: wonder if this is still needed, this is old todo doc. |
| * (see http://www.psy.uq.edu.au/~ftp/Crypto/ssleay/TODO.html) |
| */ |
| if ((pkey_type == EVP_PKEY_DSA) && mctx->pks->certs[idx]) { |
| EVP_PKEY *pubkey = X509_get_pubkey(mctx->pks->certs[idx]); |
| |
| if (pubkey && EVP_PKEY_missing_parameters(pubkey)) { |
| EVP_PKEY_copy_parameters(pubkey, pkey); |
| ap_log_error(APLOG_MARK, APLOG_ERR, 0, s, |
| "Copying DSA parameters from private key to certificate"); |
| ssl_log_ssl_error(APLOG_MARK, APLOG_ERR, s); |
| EVP_PKEY_free(pubkey); |
| } |
| } |
| |
| mctx->pks->keys[idx] = pkey; |
| |
| return TRUE; |
| } |
| |
| static void ssl_check_public_cert(server_rec *s, |
| apr_pool_t *ptemp, |
| X509 *cert, |
| int type) |
| { |
| int is_ca, pathlen; |
| char *cn; |
| |
| if (!cert) { |
| return; |
| } |
| |
| /* |
| * Some information about the certificate(s) |
| */ |
| |
| if (SSL_X509_isSGC(cert)) { |
| ap_log_error(APLOG_MARK, APLOG_INFO, 0, s, |
| "%s server certificate enables " |
| "Server Gated Cryptography (SGC)", |
| ssl_asn1_keystr(type)); |
| } |
| |
| if (SSL_X509_getBC(cert, &is_ca, &pathlen)) { |
| if (is_ca) { |
| ap_log_error(APLOG_MARK, APLOG_WARNING, 0, s, |
| "%s server certificate is a CA certificate " |
| "(BasicConstraints: CA == TRUE !?)", |
| ssl_asn1_keystr(type)); |
| } |
| |
| if (pathlen > 0) { |
| ap_log_error(APLOG_MARK, APLOG_WARNING, 0, s, |
| "%s server certificate is not a leaf certificate " |
| "(BasicConstraints: pathlen == %d > 0 !?)", |
| ssl_asn1_keystr(type), pathlen); |
| } |
| } |
| |
| if (SSL_X509_getCN(ptemp, cert, &cn)) { |
| int fnm_flags = APR_FNM_PERIOD|APR_FNM_CASE_BLIND; |
| |
| if (apr_fnmatch_test(cn)) { |
| if (apr_fnmatch(cn, s->server_hostname, |
| fnm_flags) == APR_FNM_NOMATCH) { |
| ap_log_error(APLOG_MARK, APLOG_WARNING, 0, s, |
| "%s server certificate wildcard CommonName " |
| "(CN) `%s' does NOT match server name!?", |
| ssl_asn1_keystr(type), cn); |
| } |
| } |
| else if (strNE(s->server_hostname, cn)) { |
| ap_log_error(APLOG_MARK, APLOG_WARNING, 0, s, |
| "%s server certificate CommonName (CN) `%s' " |
| "does NOT match server name!?", |
| ssl_asn1_keystr(type), cn); |
| } |
| } |
| } |
| |
| static void ssl_init_server_certs(server_rec *s, |
| apr_pool_t *p, |
| apr_pool_t *ptemp, |
| modssl_ctx_t *mctx) |
| { |
| const char *rsa_id, *dsa_id; |
| #ifndef OPENSSL_NO_EC |
| const char *ecc_id; |
| EC_GROUP *ecparams = NULL; |
| int nid; |
| EC_KEY *eckey = NULL; |
| #endif |
| const char *vhost_id = mctx->sc->vhost_id; |
| int i; |
| int have_rsa, have_dsa; |
| DH *dhparams; |
| #ifndef OPENSSL_NO_EC |
| int have_ecc; |
| #endif |
| |
| rsa_id = ssl_asn1_table_keyfmt(ptemp, vhost_id, SSL_AIDX_RSA); |
| dsa_id = ssl_asn1_table_keyfmt(ptemp, vhost_id, SSL_AIDX_DSA); |
| #ifndef OPENSSL_NO_EC |
| ecc_id = ssl_asn1_table_keyfmt(ptemp, vhost_id, SSL_AIDX_ECC); |
| #endif |
| |
| have_rsa = ssl_server_import_cert(s, mctx, rsa_id, SSL_AIDX_RSA); |
| have_dsa = ssl_server_import_cert(s, mctx, dsa_id, SSL_AIDX_DSA); |
| #ifndef OPENSSL_NO_EC |
| have_ecc = ssl_server_import_cert(s, mctx, ecc_id, SSL_AIDX_ECC); |
| #endif |
| |
| if (!(have_rsa || have_dsa |
| #ifndef OPENSSL_NO_EC |
| || have_ecc |
| #endif |
| )) { |
| ap_log_error(APLOG_MARK, APLOG_ERR, 0, s, |
| #ifndef OPENSSL_NO_EC |
| "Oops, no RSA, DSA or ECC server certificate found " |
| #else |
| "Oops, no RSA or DSA server certificate found " |
| #endif |
| "for '%s:%d'?!", s->server_hostname, s->port); |
| ssl_die(); |
| } |
| |
| for (i = 0; i < SSL_AIDX_MAX; i++) { |
| ssl_check_public_cert(s, ptemp, mctx->pks->certs[i], i); |
| } |
| |
| have_rsa = ssl_server_import_key(s, mctx, rsa_id, SSL_AIDX_RSA); |
| have_dsa = ssl_server_import_key(s, mctx, dsa_id, SSL_AIDX_DSA); |
| #ifndef OPENSSL_NO_EC |
| have_ecc = ssl_server_import_key(s, mctx, ecc_id, SSL_AIDX_ECC); |
| #endif |
| |
| if (!(have_rsa || have_dsa |
| #ifndef OPENSSL_NO_EC |
| || have_ecc |
| #endif |
| )) { |
| ap_log_error(APLOG_MARK, APLOG_ERR, 0, s, |
| #ifndef OPENSSL_NO_EC |
| "Oops, no RSA, DSA or ECC server private key found?!"); |
| #else |
| "Oops, no RSA or DSA server private key found?!"); |
| #endif |
| ssl_die(); |
| } |
| |
| /* |
| * Try to read DH parameters from the (first) SSLCertificateFile |
| */ |
| if ((mctx->pks->cert_files[0] != NULL) && |
| (dhparams = ssl_dh_GetParamFromFile(mctx->pks->cert_files[0]))) { |
| SSL_CTX_set_tmp_dh(mctx->ssl_ctx, dhparams); |
| ap_log_error(APLOG_MARK, APLOG_DEBUG, 0, s, |
| "Custom DH parameters (%d bits) for %s loaded from %s", |
| BN_num_bits(dhparams->p), vhost_id, |
| mctx->pks->cert_files[0]); |
| DH_free(dhparams); |
| } |
| |
| #ifndef OPENSSL_NO_EC |
| /* |
| * Similarly, try to read the ECDH curve name from SSLCertificateFile... |
| */ |
| if ((mctx->pks->cert_files[0] != NULL) && |
| (ecparams = ssl_ec_GetParamFromFile(mctx->pks->cert_files[0])) && |
| (nid = EC_GROUP_get_curve_name(ecparams)) && |
| (eckey = EC_KEY_new_by_curve_name(nid))) { |
| SSL_CTX_set_tmp_ecdh(mctx->ssl_ctx, eckey); |
| ap_log_error(APLOG_MARK, APLOG_DEBUG, 0, s, |
| "ECDH curve %s for %s specified in %s", |
| OBJ_nid2sn(nid), vhost_id, mctx->pks->cert_files[0]); |
| } |
| /* |
| * ...otherwise, enable auto curve selection (OpenSSL 1.0.2 and later) |
| * or configure NIST P-256 (required to enable ECDHE for earlier versions) |
| */ |
| else { |
| #if defined(SSL_CTX_set_ecdh_auto) |
| SSL_CTX_set_ecdh_auto(mctx->ssl_ctx, 1); |
| #else |
| eckey = EC_KEY_new_by_curve_name(NID_X9_62_prime256v1); |
| SSL_CTX_set_tmp_ecdh(mctx->ssl_ctx, eckey); |
| #endif |
| } |
| EC_KEY_free(eckey); |
| EC_GROUP_free(ecparams); |
| #endif |
| } |
| |
| #ifdef HAVE_TLS_SESSION_TICKETS |
| static void ssl_init_ticket_key(server_rec *s, |
| apr_pool_t *p, |
| apr_pool_t *ptemp, |
| modssl_ctx_t *mctx) |
| { |
| apr_status_t rv; |
| apr_file_t *fp; |
| apr_size_t len; |
| char buf[TLSEXT_TICKET_KEY_LEN]; |
| char *path; |
| modssl_ticket_key_t *ticket_key = mctx->ticket_key; |
| |
| if (!ticket_key->file_path) { |
| return; |
| } |
| |
| path = ap_server_root_relative(p, ticket_key->file_path); |
| |
| rv = apr_file_open(&fp, path, APR_READ|APR_BINARY, |
| APR_OS_DEFAULT, ptemp); |
| |
| if (rv != APR_SUCCESS) { |
| ap_log_error(APLOG_MARK, APLOG_EMERG, 0, s, |
| "Failed to open ticket key file %s: (%d) %pm", |
| path, rv, &rv); |
| ssl_die(); |
| } |
| |
| rv = apr_file_read_full(fp, &buf[0], TLSEXT_TICKET_KEY_LEN, &len); |
| |
| if (rv != APR_SUCCESS) { |
| ap_log_error(APLOG_MARK, APLOG_EMERG, 0, s, |
| "Failed to read %d bytes from %s: (%d) %pm", |
| TLSEXT_TICKET_KEY_LEN, path, rv, &rv); |
| ssl_die(); |
| } |
| |
| memcpy(ticket_key->key_name, buf, 16); |
| memcpy(ticket_key->hmac_secret, buf + 16, 16); |
| memcpy(ticket_key->aes_key, buf + 32, 16); |
| |
| if (!SSL_CTX_set_tlsext_ticket_key_cb(mctx->ssl_ctx, |
| ssl_callback_SessionTicket)) { |
| ap_log_error(APLOG_MARK, APLOG_EMERG, 0, s, |
| "Unable to initialize TLS session ticket key callback " |
| "(incompatible OpenSSL version?)"); |
| ssl_log_ssl_error(APLOG_MARK, APLOG_EMERG, s); |
| ssl_die(); |
| } |
| |
| ap_log_error(APLOG_MARK, APLOG_INFO, 0, s, |
| "TLS session ticket key for %s successfully loaded from %s", |
| (mySrvConfig(s))->vhost_id, path); |
| } |
| #endif |
| |
| static void ssl_init_proxy_certs(server_rec *s, |
| apr_pool_t *p, |
| apr_pool_t *ptemp, |
| modssl_ctx_t *mctx) |
| { |
| int n, ncerts = 0; |
| STACK_OF(X509_INFO) *sk; |
| STACK_OF(X509) *chain; |
| X509_STORE_CTX *sctx; |
| X509_STORE *store = SSL_CTX_get_cert_store(mctx->ssl_ctx); |
| modssl_pk_proxy_t *pkp = mctx->pkp; |
| |
| SSL_CTX_set_client_cert_cb(mctx->ssl_ctx, |
| ssl_callback_proxy_cert); |
| |
| if (!(pkp->cert_file || pkp->cert_path)) { |
| return; |
| } |
| |
| sk = sk_X509_INFO_new_null(); |
| |
| if (pkp->cert_file) { |
| SSL_X509_INFO_load_file(ptemp, sk, pkp->cert_file); |
| } |
| |
| if (pkp->cert_path) { |
| SSL_X509_INFO_load_path(ptemp, sk, pkp->cert_path); |
| } |
| |
| if ((ncerts = sk_X509_INFO_num(sk)) <= 0) { |
| sk_X509_INFO_free(sk); |
| ap_log_error(APLOG_MARK, APLOG_WARNING, 0, s, |
| "no client certs found for SSL proxy"); |
| return; |
| } |
| |
| /* Check that all client certs have got certificates and private |
| * keys. */ |
| for (n = 0; n < ncerts; n++) { |
| X509_INFO *inf = sk_X509_INFO_value(sk, n); |
| |
| if (!inf->x509 || !inf->x_pkey || !inf->x_pkey->dec_pkey || |
| inf->enc_data) { |
| sk_X509_INFO_free(sk); |
| ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, s, |
| "incomplete client cert configured for SSL proxy " |
| "(missing or encrypted private key?)"); |
| ssl_die(); |
| return; |
| } |
| |
| if (X509_check_private_key(inf->x509, inf->x_pkey->dec_pkey) != 1) { |
| ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, s, |
| "proxy client certificate and " |
| "private key do not match"); |
| ssl_log_ssl_error(APLOG_MARK, APLOG_ERR, s); |
| ssl_die(); |
| return; |
| } |
| } |
| |
| ap_log_error(APLOG_MARK, APLOG_DEBUG, 0, s, |
| "loaded %d client certs for SSL proxy", |
| ncerts); |
| pkp->certs = sk; |
| |
| if (!pkp->ca_cert_file || !store) { |
| return; |
| } |
| |
| /* If SSLProxyMachineCertificateChainFile is configured, load all |
| * the CA certs and have OpenSSL attempt to construct a full chain |
| * from each configured end-entity cert up to a root. This will |
| * allow selection of the correct cert given a list of root CA |
| * names in the certificate request from the server. */ |
| pkp->ca_certs = (STACK_OF(X509) **) apr_pcalloc(p, ncerts * sizeof(sk)); |
| sctx = X509_STORE_CTX_new(); |
| |
| if (!sctx) { |
| ap_log_error(APLOG_MARK, APLOG_EMERG, 0, s, |
| "SSL proxy client cert initialization failed"); |
| ssl_log_ssl_error(APLOG_MARK, APLOG_EMERG, s); |
| ssl_die(); |
| } |
| |
| X509_STORE_load_locations(store, pkp->ca_cert_file, NULL); |
| |
| for (n = 0; n < ncerts; n++) { |
| int i; |
| |
| X509_INFO *inf = sk_X509_INFO_value(pkp->certs, n); |
| X509_NAME *name = X509_get_subject_name(inf->x509); |
| char *cert_dn = SSL_X509_NAME_to_string(ptemp, name, 0); |
| X509_STORE_CTX_init(sctx, store, inf->x509, NULL); |
| |
| /* Attempt to verify the client cert */ |
| if (X509_verify_cert(sctx) != 1) { |
| int err = X509_STORE_CTX_get_error(sctx); |
| ap_log_error(APLOG_MARK, APLOG_WARNING, 0, s, |
| "SSL proxy client cert chain verification failed for %s: %s", |
| cert_dn, X509_verify_cert_error_string(err)); |
| } |
| |
| /* Clear X509_verify_cert errors */ |
| ERR_clear_error(); |
| |
| /* Obtain a copy of the verified chain */ |
| chain = X509_STORE_CTX_get1_chain(sctx); |
| |
| if (chain != NULL) { |
| /* Discard end entity cert from the chain */ |
| X509_free(sk_X509_shift(chain)); |
| |
| if ((i = sk_X509_num(chain)) > 0) { |
| /* Store the chain for later use */ |
| pkp->ca_certs[n] = chain; |
| } |
| else { |
| /* Discard empty chain */ |
| sk_X509_pop_free(chain, X509_free); |
| pkp->ca_certs[n] = NULL; |
| } |
| |
| ap_log_error(APLOG_MARK, APLOG_DEBUG, 0, s, |
| "loaded %i intermediate CA%s for cert %i (%s)", |
| i, i == 1 ? "" : "s", n, cert_dn); |
| if (i > 0) { |
| int j; |
| for (j = 0; j < i; j++) { |
| X509_NAME *ca_name = X509_get_subject_name(sk_X509_value(chain, j)); |
| char *ca_dn = SSL_X509_NAME_to_string(ptemp, ca_name, 0); |
| ap_log_error(APLOG_MARK, APLOG_DEBUG, 0, s, "%i: %s", j, ca_dn); |
| } |
| } |
| } |
| |
| /* get ready for next X509_STORE_CTX_init */ |
| X509_STORE_CTX_cleanup(sctx); |
| } |
| |
| X509_STORE_CTX_free(sctx); |
| } |
| |
| static void ssl_init_proxy_ctx(server_rec *s, |
| apr_pool_t *p, |
| apr_pool_t *ptemp, |
| SSLSrvConfigRec *sc) |
| { |
| ssl_init_ctx(s, p, ptemp, sc->proxy); |
| |
| ssl_init_proxy_certs(s, p, ptemp, sc->proxy); |
| } |
| |
| static void ssl_init_server_ctx(server_rec *s, |
| apr_pool_t *p, |
| apr_pool_t *ptemp, |
| SSLSrvConfigRec *sc) |
| { |
| ssl_init_server_check(s, p, ptemp, sc->server); |
| |
| ssl_init_ctx(s, p, ptemp, sc->server); |
| |
| ssl_init_server_certs(s, p, ptemp, sc->server); |
| |
| #ifdef HAVE_TLS_SESSION_TICKETS |
| ssl_init_ticket_key(s, p, ptemp, sc->server); |
| #endif |
| |
| SSL_CTX_set_timeout(sc->server->ssl_ctx, |
| sc->session_cache_timeout == UNSET ? |
| SSL_SESSION_CACHE_TIMEOUT : sc->session_cache_timeout); |
| } |
| |
| /* |
| * Configure a particular server |
| */ |
| void ssl_init_ConfigureServer(server_rec *s, |
| apr_pool_t *p, |
| apr_pool_t *ptemp, |
| SSLSrvConfigRec *sc) |
| { |
| /* Initialize the server if SSL is enabled or optional. |
| */ |
| if ((sc->enabled == SSL_ENABLED_TRUE) || (sc->enabled == SSL_ENABLED_OPTIONAL)) { |
| ap_log_error(APLOG_MARK, APLOG_INFO, 0, s, |
| "Configuring server for SSL protocol"); |
| ssl_init_server_ctx(s, p, ptemp, sc); |
| } |
| |
| if (sc->proxy_enabled) { |
| ssl_init_proxy_ctx(s, p, ptemp, sc); |
| } |
| } |
| |
| void ssl_init_CheckServers(server_rec *base_server, apr_pool_t *p) |
| { |
| server_rec *s, *ps; |
| SSLSrvConfigRec *sc; |
| apr_hash_t *table; |
| const char *key; |
| apr_ssize_t klen; |
| |
| BOOL conflict = FALSE; |
| |
| /* |
| * Give out warnings when a server has HTTPS configured |
| * for the HTTP port or vice versa |
| */ |
| for (s = base_server; s; s = s->next) { |
| sc = mySrvConfig(s); |
| |
| if ((sc->enabled == SSL_ENABLED_TRUE) && (s->port == DEFAULT_HTTP_PORT)) { |
| ap_log_error(APLOG_MARK, APLOG_WARNING, 0, |
| base_server, |
| "Init: (%s) You configured HTTPS(%d) " |
| "on the standard HTTP(%d) port!", |
| ssl_util_vhostid(p, s), |
| DEFAULT_HTTPS_PORT, DEFAULT_HTTP_PORT); |
| } |
| |
| if ((sc->enabled == SSL_ENABLED_FALSE) && (s->port == DEFAULT_HTTPS_PORT)) { |
| ap_log_error(APLOG_MARK, APLOG_WARNING, 0, |
| base_server, |
| "Init: (%s) You configured HTTP(%d) " |
| "on the standard HTTPS(%d) port!", |
| ssl_util_vhostid(p, s), |
| DEFAULT_HTTP_PORT, DEFAULT_HTTPS_PORT); |
| } |
| } |
| |
| /* |
| * Give out warnings when more than one SSL-aware virtual server uses the |
| * same IP:port. This doesn't work because mod_ssl then will always use |
| * just the certificate/keys of one virtual host (which one cannot be said |
| * easily - but that doesn't matter here). |
| */ |
| table = apr_hash_make(p); |
| |
| for (s = base_server; s; s = s->next) { |
| char *addr; |
| |
| sc = mySrvConfig(s); |
| |
| if (!((sc->enabled == SSL_ENABLED_TRUE) && s->addrs)) { |
| continue; |
| } |
| |
| apr_sockaddr_ip_get(&addr, s->addrs->host_addr); |
| key = apr_psprintf(p, "%s:%u", addr, s->addrs->host_port); |
| klen = strlen(key); |
| |
| if ((ps = (server_rec *)apr_hash_get(table, key, klen))) { |
| #ifdef OPENSSL_NO_TLSEXT |
| int level = APLOG_WARNING; |
| const char *problem = "conflict"; |
| #else |
| int level = APLOG_DEBUG; |
| const char *problem = "overlap"; |
| #endif |
| ap_log_error(APLOG_MARK, level, 0, base_server, |
| "Init: SSL server IP/port %s: " |
| "%s (%s:%d) vs. %s (%s:%d)", |
| problem, ssl_util_vhostid(p, s), |
| (s->defn_name ? s->defn_name : "unknown"), |
| s->defn_line_number, |
| ssl_util_vhostid(p, ps), |
| (ps->defn_name ? ps->defn_name : "unknown"), |
| ps->defn_line_number); |
| conflict = TRUE; |
| continue; |
| } |
| |
| apr_hash_set(table, key, klen, s); |
| } |
| |
| if (conflict) { |
| ap_log_error(APLOG_MARK, APLOG_WARNING, 0, base_server, |
| #ifdef OPENSSL_NO_TLSEXT |
| "Init: You should not use name-based " |
| "virtual hosts in conjunction with SSL!!"); |
| #else |
| "Init: Name-based SSL virtual hosts only " |
| "work for clients with TLS server name indication " |
| "support (RFC 4366)"); |
| #endif |
| } |
| } |
| |
| #ifdef SSLC_VERSION_NUMBER |
| static int ssl_init_FindCAList_X509NameCmp(char **a, char **b) |
| { |
| return(X509_NAME_cmp((void*)*a, (void*)*b)); |
| } |
| #else |
| static int ssl_init_FindCAList_X509NameCmp(const X509_NAME * const *a, |
| const X509_NAME * const *b) |
| { |
| return(X509_NAME_cmp(*a, *b)); |
| } |
| #endif |
| |
| static void ssl_init_PushCAList(STACK_OF(X509_NAME) *ca_list, |
| server_rec *s, const char *file) |
| { |
| int n; |
| STACK_OF(X509_NAME) *sk; |
| |
| sk = (STACK_OF(X509_NAME) *) |
| SSL_load_client_CA_file(MODSSL_PCHAR_CAST file); |
| |
| if (!sk) { |
| return; |
| } |
| |
| for (n = 0; n < sk_X509_NAME_num(sk); n++) { |
| char name_buf[256]; |
| X509_NAME *name = sk_X509_NAME_value(sk, n); |
| |
| ap_log_error(APLOG_MARK, APLOG_DEBUG, 0, s, |
| "CA certificate: %s", |
| X509_NAME_oneline(name, name_buf, sizeof(name_buf))); |
| |
| /* |
| * note that SSL_load_client_CA_file() checks for duplicates, |
| * but since we call it multiple times when reading a directory |
| * we must also check for duplicates ourselves. |
| */ |
| |
| if (sk_X509_NAME_find(ca_list, name) < 0) { |
| /* this will be freed when ca_list is */ |
| sk_X509_NAME_push(ca_list, name); |
| } |
| else { |
| /* need to free this ourselves, else it will leak */ |
| X509_NAME_free(name); |
| } |
| } |
| |
| sk_X509_NAME_free(sk); |
| } |
| |
| STACK_OF(X509_NAME) *ssl_init_FindCAList(server_rec *s, |
| apr_pool_t *ptemp, |
| const char *ca_file, |
| const char *ca_path) |
| { |
| STACK_OF(X509_NAME) *ca_list; |
| |
| /* |
| * Start with a empty stack/list where new |
| * entries get added in sorted order. |
| */ |
| ca_list = sk_X509_NAME_new(ssl_init_FindCAList_X509NameCmp); |
| |
| /* |
| * Process CA certificate bundle file |
| */ |
| if (ca_file) { |
| ssl_init_PushCAList(ca_list, s, ca_file); |
| } |
| |
| /* |
| * Process CA certificate path files |
| */ |
| if (ca_path) { |
| apr_dir_t *dir; |
| apr_finfo_t direntry; |
| apr_int32_t finfo_flags = APR_FINFO_TYPE|APR_FINFO_NAME; |
| apr_status_t rv; |
| |
| if ((rv = apr_dir_open(&dir, ca_path, ptemp)) != APR_SUCCESS) { |
| ap_log_error(APLOG_MARK, APLOG_ERR, rv, s, |
| "Failed to open Certificate Path `%s'", |
| ca_path); |
| ssl_die(); |
| } |
| |
| while ((apr_dir_read(&direntry, finfo_flags, dir)) == APR_SUCCESS) { |
| const char *file; |
| if (direntry.filetype == APR_DIR) { |
| continue; /* don't try to load directories */ |
| } |
| file = apr_pstrcat(ptemp, ca_path, "/", direntry.name, NULL); |
| ssl_init_PushCAList(ca_list, s, file); |
| } |
| |
| apr_dir_close(dir); |
| } |
| |
| /* |
| * Cleanup |
| */ |
| (void) sk_X509_NAME_set_cmp_func(ca_list, NULL); |
| |
| return ca_list; |
| } |
| |
| void ssl_init_Child(apr_pool_t *p, server_rec *s) |
| { |
| SSLModConfigRec *mc = myModConfig(s); |
| mc->pid = getpid(); /* only call getpid() once per-process */ |
| |
| /* XXX: there should be an ap_srand() function */ |
| srand((unsigned int)time(NULL)); |
| |
| /* open the mutex lockfile */ |
| ssl_mutex_reinit(s, p); |
| } |
| |
| #define MODSSL_CFG_ITEM_FREE(func, item) \ |
| if (item) { \ |
| func(item); \ |
| item = NULL; \ |
| } |
| |
| static void ssl_init_ctx_cleanup(modssl_ctx_t *mctx) |
| { |
| MODSSL_CFG_ITEM_FREE(X509_STORE_free, mctx->crl); |
| |
| MODSSL_CFG_ITEM_FREE(SSL_CTX_free, mctx->ssl_ctx); |
| } |
| |
| static void ssl_init_ctx_cleanup_proxy(modssl_ctx_t *mctx) |
| { |
| ssl_init_ctx_cleanup(mctx); |
| |
| if (mctx->pkp->certs) { |
| int i = 0; |
| int ncerts = sk_X509_INFO_num(mctx->pkp->certs); |
| |
| if (mctx->pkp->ca_certs) { |
| for (i = 0; i < ncerts; i++) { |
| if (mctx->pkp->ca_certs[i] != NULL) { |
| sk_X509_pop_free(mctx->pkp->ca_certs[i], X509_free); |
| } |
| } |
| } |
| |
| sk_X509_INFO_pop_free(mctx->pkp->certs, X509_INFO_free); |
| mctx->pkp->certs = NULL; |
| } |
| } |
| |
| static void ssl_init_ctx_cleanup_server(modssl_ctx_t *mctx) |
| { |
| int i; |
| |
| ssl_init_ctx_cleanup(mctx); |
| |
| for (i=0; i < SSL_AIDX_MAX; i++) { |
| MODSSL_CFG_ITEM_FREE(X509_free, |
| mctx->pks->certs[i]); |
| |
| MODSSL_CFG_ITEM_FREE(EVP_PKEY_free, |
| mctx->pks->keys[i]); |
| } |
| } |
| |
| apr_status_t ssl_init_ModuleKill(void *data) |
| { |
| SSLSrvConfigRec *sc; |
| server_rec *base_server = (server_rec *)data; |
| server_rec *s; |
| |
| /* |
| * Drop the session cache and mutex |
| */ |
| ssl_scache_kill(base_server); |
| |
| /* |
| * Destroy the temporary keys and params |
| */ |
| ssl_dh_FreeParams(); |
| |
| /* |
| * Free the non-pool allocated structures |
| * in the per-server configurations |
| */ |
| for (s = base_server; s; s = s->next) { |
| sc = mySrvConfig(s); |
| |
| ssl_init_ctx_cleanup_proxy(sc->proxy); |
| |
| ssl_init_ctx_cleanup_server(sc->server); |
| } |
| |
| return APR_SUCCESS; |
| } |
| |
