2 ** _ __ ___ ___ __| | ___ ___| | mod_ssl
3 ** | '_ ` _ \ / _ \ / _` | / __/ __| | Apache Interface to OpenSSL
4 ** | | | | | | (_) | (_| | \__ \__ \ | www.modssl.org
5 ** |_| |_| |_|\___/ \__,_|___|___/___/_| ftp.modssl.org
8 ** Initialization of Servers
11 /* ====================================================================
12 * The Apache Software License, Version 1.1
14 * Copyright (c) 2000-2002 The Apache Software Foundation. All rights
17 * Redistribution and use in source and binary forms, with or without
18 * modification, are permitted provided that the following conditions
21 * 1. Redistributions of source code must retain the above copyright
22 * notice, this list of conditions and the following disclaimer.
24 * 2. Redistributions in binary form must reproduce the above copyright
25 * notice, this list of conditions and the following disclaimer in
26 * the documentation and/or other materials provided with the
29 * 3. The end-user documentation included with the redistribution,
30 * if any, must include the following acknowledgment:
31 * "This product includes software developed by the
32 * Apache Software Foundation (http://www.apache.org/)."
33 * Alternately, this acknowledgment may appear in the software itself,
34 * if and wherever such third-party acknowledgments normally appear.
36 * 4. The names "Apache" and "Apache Software Foundation" must
37 * not be used to endorse or promote products derived from this
38 * software without prior written permission. For written
39 * permission, please contact apache@apache.org.
41 * 5. Products derived from this software may not be called "Apache",
42 * nor may "Apache" appear in their name, without prior written
43 * permission of the Apache Software Foundation.
45 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
46 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
47 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
48 * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
49 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
50 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
51 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
52 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
53 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
54 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
55 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
57 * ====================================================================
64 /* _________________________________________________________________
66 ** Module Initialization
67 ** _________________________________________________________________
70 static char *ssl_add_version_component(apr_pool_t *p,
74 char *val = ssl_var_lookup(p, s, NULL, NULL, name);
77 ap_add_version_component(p, val);
83 static char *version_components[] = {
84 "SSL_VERSION_PRODUCT",
85 "SSL_VERSION_INTERFACE",
86 "SSL_VERSION_LIBRARY",
90 static void ssl_add_version_components(apr_pool_t *p,
93 char *vals[sizeof(version_components)/sizeof(char *)];
96 for (i=0; version_components[i]; i++) {
97 vals[i] = ssl_add_version_component(p, s,
98 version_components[i]);
101 ssl_log(s, SSL_LOG_INFO,
102 "Server: %s, Interface: %s, Library: %s",
103 AP_SERVER_BASEVERSION,
104 vals[1], /* SSL_VERSION_INTERFACE */
105 vals[2]); /* SSL_VERSION_LIBRARY */
110 * Initialize SSL library
112 static void ssl_init_SSLLibrary(server_rec *s)
114 ssl_log(s, SSL_LOG_INFO,
115 "Init: Initializing %s library", SSL_LIBRARY_NAME);
117 CRYPTO_malloc_init();
118 SSL_load_error_strings();
123 * Handle the Temporary RSA Keys and DH Params
126 #define MODSSL_TMP_KEY_FREE(mc, type, idx) \
127 if (mc->pTmpKeys[idx]) { \
128 type##_free((type *)mc->pTmpKeys[idx]); \
129 mc->pTmpKeys[idx] = NULL; \
132 #define MODSSL_TMP_KEYS_FREE(mc, type) \
133 MODSSL_TMP_KEY_FREE(mc, type, SSL_TMP_KEY_##type##_512); \
134 MODSSL_TMP_KEY_FREE(mc, type, SSL_TMP_KEY_##type##_1024)
136 static void ssl_tmp_keys_free(server_rec *s)
138 SSLModConfigRec *mc = myModConfig(s);
140 MODSSL_TMP_KEYS_FREE(mc, RSA);
141 MODSSL_TMP_KEYS_FREE(mc, DH);
144 static void ssl_tmp_key_init_rsa(server_rec *s,
147 SSLModConfigRec *mc = myModConfig(s);
149 if (!(mc->pTmpKeys[idx] =
150 RSA_generate_key(bits, RSA_F4, NULL, NULL)))
152 ssl_log(s, SSL_LOG_ERROR,
153 "Init: Failed to generate temporary "
154 "%d bit RSA private key", bits);
160 static void ssl_tmp_key_init_dh(server_rec *s,
163 SSLModConfigRec *mc = myModConfig(s);
165 if (!(mc->pTmpKeys[idx] =
166 ssl_dh_GetTmpParam(bits)))
168 ssl_log(s, SSL_LOG_ERROR,
169 "Init: Failed to generate temporary "
170 "%d bit DH parameters", bits);
175 #define MODSSL_TMP_KEY_INIT_RSA(s, bits) \
176 ssl_tmp_key_init_rsa(s, bits, SSL_TMP_KEY_RSA_##bits)
178 #define MODSSL_TMP_KEY_INIT_DH(s, bits) \
179 ssl_tmp_key_init_dh(s, bits, SSL_TMP_KEY_DH_##bits)
181 static void ssl_tmp_keys_init(server_rec *s)
183 ssl_log(s, SSL_LOG_INFO,
184 "Init: Generating temporary RSA private keys (512/1024 bits)");
186 MODSSL_TMP_KEY_INIT_RSA(s, 512);
187 MODSSL_TMP_KEY_INIT_RSA(s, 1024);
189 ssl_log(s, SSL_LOG_INFO,
190 "Init: Generating temporary DH parameters (512/1024 bits)");
192 MODSSL_TMP_KEY_INIT_DH(s, 512);
193 MODSSL_TMP_KEY_INIT_DH(s, 1024);
197 * Per-module initialization
199 int ssl_init_Module(apr_pool_t *p, apr_pool_t *plog,
201 server_rec *base_server)
203 SSLModConfigRec *mc = myModConfig(base_server);
208 * Let us cleanup on restarts and exists
210 apr_pool_cleanup_register(p, base_server,
212 apr_pool_cleanup_null);
215 * Any init round fixes the global config
217 ssl_config_global_create(base_server); /* just to avoid problems */
218 ssl_config_global_fix(mc);
221 * try to fix the configuration and open the dedicated SSL
222 * logfile as early as possible
224 for (s = base_server; s; s = s->next) {
236 * Create the server host:port string because we need it a lot
238 sc->vhost_id = ssl_util_vhostid(p, s);
239 sc->vhost_id_len = strlen(sc->vhost_id);
241 /* Fix up stuff that may not have been set */
242 if (sc->enabled == UNSET) {
246 if (sc->proxy_enabled == UNSET) {
247 sc->proxy_enabled = FALSE;
250 if (sc->session_cache_timeout == UNSET) {
251 sc->session_cache_timeout = SSL_SESSION_CACHE_TIMEOUT;
254 if (sc->server->pphrase_dialog_type == SSL_PPTYPE_UNSET) {
255 sc->server->pphrase_dialog_type = SSL_PPTYPE_BUILTIN;
258 /* Open the dedicated SSL logfile */
259 ssl_log_open(base_server, s, p);
262 ssl_init_SSLLibrary(base_server);
265 ssl_util_thread_setup(base_server, p);
269 * Seed the Pseudo Random Number Generator (PRNG)
270 * only need ptemp here; nothing inside allocated from the pool
271 * needs to live once we return from ssl_rand_seed().
273 ssl_rand_seed(base_server, ptemp, SSL_RSCTX_STARTUP, "Init: ");
276 * read server private keys/public certs into memory.
277 * decrypting any encrypted keys via configured SSLPassPhraseDialogs
278 * anything that needs to live longer than ptemp needs to also survive
279 * restarts, in which case they'll live inside s->process->pool.
281 ssl_pphrase_Handle(base_server, ptemp);
283 ssl_tmp_keys_init(base_server);
286 * SSL external crypto device ("engine") support
288 #ifdef SSL_EXPERIMENTAL_ENGINE
289 ssl_init_Engine(base_server, p);
293 * initialize the mutex handling
295 if (!ssl_mutex_init(base_server, p)) {
296 return HTTP_INTERNAL_SERVER_ERROR;
300 * initialize session caching
302 ssl_scache_init(base_server, p);
307 ssl_log(base_server, SSL_LOG_INFO,
308 "Init: Initializing (virtual) servers for SSL");
310 for (s = base_server; s; s = s->next) {
313 * Either now skip this server when SSL is disabled for
314 * it or give out some information about what we're
319 * Read the server certificate and key
321 ssl_init_ConfigureServer(s, p, ptemp, sc);
325 * Configuration consistency checks
327 ssl_init_CheckServers(base_server, ptemp);
330 * Announce mod_ssl and SSL library in HTTP Server field
331 * as ``mod_ssl/X.X.X OpenSSL/X.X.X''
333 ssl_add_version_components(p, base_server);
335 SSL_init_app_data2_idx(); /* for SSL_get_app_data2() at request time */
341 * Support for external a Crypto Device ("engine"), usually
342 * a hardware accellerator card for crypto operations.
344 #ifdef SSL_EXPERIMENTAL_ENGINE
345 void ssl_init_Engine(server_rec *s, apr_pool_t *p)
347 SSLModConfigRec *mc = myModConfig(s);
350 if (mc->szCryptoDevice) {
351 if (!(e = ENGINE_by_id(mc->szCryptoDevice))) {
352 ssl_log(s, SSL_LOG_ERROR,
353 "Init: Failed to load Crypto Device API `%s'",
358 if (strEQ(mc->szCryptoDevice, "chil")) {
359 ENGINE_ctrl(e, ENGINE_CTRL_CHIL_SET_FORKCHECK, 1, 0, 0);
362 if (!ENGINE_set_default(e, ENGINE_METHOD_ALL)) {
363 ssl_log(s, SSL_LOG_ERROR,
364 "Init: Failed to enable Crypto Device API `%s'",
374 static void ssl_init_server_check(server_rec *s,
380 * check for important parameters and the
381 * possibility that the user forgot to set them.
383 if (!mctx->pks->cert_files[0]) {
384 ssl_log(s, SSL_LOG_ERROR|SSL_INIT,
385 "No SSL Certificate set [hint: SSLCertificateFile]");
390 * Check for problematic re-initializations
392 if (mctx->pks->certs[SSL_AIDX_RSA] ||
393 mctx->pks->certs[SSL_AIDX_DSA])
395 ssl_log(s, SSL_LOG_ERROR|SSL_INIT,
396 "Illegal attempt to re-initialise SSL for server "
397 "(theoretically shouldn't happen!)");
402 static void ssl_init_ctx_protocol(server_rec *s,
408 SSL_METHOD *method = NULL;
410 int protocol = mctx->protocol;
413 * Create the new per-server SSL context
415 if (protocol == SSL_PROTOCOL_NONE) {
416 ssl_log(s, SSL_LOG_ERROR|SSL_INIT,
417 "No SSL protocols available [hint: SSLProtocol]");
422 (protocol & SSL_PROTOCOL_SSLV2 ? "SSLv2, " : ""),
423 (protocol & SSL_PROTOCOL_SSLV3 ? "SSLv3, " : ""),
424 (protocol & SSL_PROTOCOL_TLSV1 ? "TLSv1, " : ""),
426 cp[strlen(cp)-2] = NUL;
428 ssl_log(s, SSL_LOG_TRACE|SSL_INIT,
429 "Creating new SSL context (protocols: %s)", cp);
431 if (protocol == SSL_PROTOCOL_SSLV2) {
433 SSLv2_client_method() : /* proxy */
434 SSLv2_server_method(); /* server */
435 ctx = SSL_CTX_new(method); /* only SSLv2 is left */
439 SSLv23_client_method() : /* proxy */
440 SSLv23_server_method(); /* server */
441 ctx = SSL_CTX_new(method); /* be more flexible */
446 SSL_CTX_set_options(ctx, SSL_OP_ALL);
448 if (!(protocol & SSL_PROTOCOL_SSLV2)) {
449 SSL_CTX_set_options(ctx, SSL_OP_NO_SSLv2);
452 if (!(protocol & SSL_PROTOCOL_SSLV3)) {
453 SSL_CTX_set_options(ctx, SSL_OP_NO_SSLv3);
456 if (!(protocol & SSL_PROTOCOL_TLSV1)) {
457 SSL_CTX_set_options(ctx, SSL_OP_NO_TLSv1);
460 SSL_CTX_set_app_data(ctx, s);
463 * Configure additional context ingredients
465 SSL_CTX_set_options(ctx, SSL_OP_SINGLE_DH_USE);
468 static void ssl_init_ctx_session_cache(server_rec *s,
473 SSL_CTX *ctx = mctx->ssl_ctx;
474 SSLModConfigRec *mc = myModConfig(s);
475 long cache_mode = SSL_SESS_CACHE_OFF;
477 if (mc->nSessionCacheMode != SSL_SCMODE_NONE) {
478 /* SSL_SESS_CACHE_NO_INTERNAL_LOOKUP will force OpenSSL
479 * to ignore process local-caching and
480 * to always get/set/delete sessions using mod_ssl's callbacks.
482 cache_mode = SSL_SESS_CACHE_SERVER|SSL_SESS_CACHE_NO_INTERNAL_LOOKUP;
485 SSL_CTX_set_session_cache_mode(ctx, cache_mode);
487 SSL_CTX_sess_set_new_cb(ctx, ssl_callback_NewSessionCacheEntry);
488 SSL_CTX_sess_set_get_cb(ctx, ssl_callback_GetSessionCacheEntry);
489 SSL_CTX_sess_set_remove_cb(ctx, ssl_callback_DelSessionCacheEntry);
492 static void ssl_init_ctx_callbacks(server_rec *s,
497 SSL_CTX *ctx = mctx->ssl_ctx;
499 SSL_CTX_set_tmp_rsa_callback(ctx, ssl_callback_TmpRSA);
500 SSL_CTX_set_tmp_dh_callback(ctx, ssl_callback_TmpDH);
502 if (mctx->sc->log_level >= SSL_LOG_INFO) {
503 /* this callback only logs if SSLLogLevel >= info */
504 SSL_CTX_set_info_callback(ctx, ssl_callback_LogTracingState);
508 static void ssl_init_ctx_verify(server_rec *s,
513 SSL_CTX *ctx = mctx->ssl_ctx;
515 int verify = SSL_VERIFY_NONE;
516 STACK_OF(X509_NAME) *ca_list;
518 if (mctx->auth.verify_mode == SSL_CVERIFY_UNSET) {
519 mctx->auth.verify_mode = SSL_CVERIFY_NONE;
522 if (mctx->auth.verify_depth == UNSET) {
523 mctx->auth.verify_depth = 1;
527 * Configure callbacks for SSL context
529 if (mctx->auth.verify_mode == SSL_CVERIFY_REQUIRE) {
530 verify |= SSL_VERIFY_PEER_STRICT;
533 if ((mctx->auth.verify_mode == SSL_CVERIFY_OPTIONAL) ||
534 (mctx->auth.verify_mode == SSL_CVERIFY_OPTIONAL_NO_CA))
536 verify |= SSL_VERIFY_PEER;
539 SSL_CTX_set_verify(ctx, verify, ssl_callback_SSLVerify);
542 * Configure Client Authentication details
544 if (mctx->auth.ca_cert_file || mctx->auth.ca_cert_path) {
545 ssl_log(s, SSL_LOG_TRACE|SSL_INIT,
546 "Configuring client authentication");
548 if (!SSL_CTX_load_verify_locations(ctx,
549 mctx->auth.ca_cert_file,
550 mctx->auth.ca_cert_path))
552 ssl_log(s, SSL_LOG_ERROR|SSL_ADD_SSLERR|SSL_INIT,
553 "Unable to configure verify locations "
554 "for client authentication");
558 ca_list = ssl_init_FindCAList(s, ptemp,
559 mctx->auth.ca_cert_file,
560 mctx->auth.ca_cert_path);
562 ssl_log(s, SSL_LOG_ERROR|SSL_INIT,
563 "Unable to determine list of available "
564 "CA certificates for client authentication");
568 SSL_CTX_set_client_CA_list(ctx, (STACK *)ca_list);
572 * Give a warning when no CAs were configured but client authentication
573 * should take place. This cannot work.
575 if (mctx->auth.verify_mode == SSL_CVERIFY_REQUIRE) {
576 ca_list = (STACK_OF(X509_NAME) *)SSL_CTX_get_client_CA_list(ctx);
578 if (sk_X509_NAME_num(ca_list) == 0) {
579 ssl_log(s, SSL_LOG_WARN,
580 "Init: Oops, you want to request client authentication, "
581 "but no CAs are known for verification!? "
582 "[Hint: SSLCACertificate*]");
587 static void ssl_init_ctx_cipher_suite(server_rec *s,
592 SSL_CTX *ctx = mctx->ssl_ctx;
593 const char *suite = mctx->auth.cipher_suite;
596 * Configure SSL Cipher Suite
602 ssl_log(s, SSL_LOG_TRACE|SSL_INIT,
603 "Configuring permitted SSL ciphers [%s]",
606 if (!SSL_CTX_set_cipher_list(ctx, suite)) {
607 ssl_log(s, SSL_LOG_ERROR|SSL_ADD_SSLERR|SSL_INIT,
608 "Unable to configure permitted SSL ciphers");
613 static void ssl_init_ctx_crl(server_rec *s,
619 * Configure Certificate Revocation List (CRL) Details
622 if (!(mctx->crl_file || mctx->crl_path)) {
626 ssl_log(s, SSL_LOG_TRACE|SSL_INIT,
627 "Configuring certificate revocation facility");
630 SSL_X509_STORE_create((char *)mctx->crl_file,
631 (char *)mctx->crl_path);
634 ssl_log(s, SSL_LOG_ERROR|SSL_ADD_SSLERR|SSL_INIT,
635 "Unable to configure X.509 CRL storage "
636 "for certificate revocation");
641 static void ssl_init_ctx_cert_chain(server_rec *s,
646 BOOL skip_first = TRUE;
648 const char *chain = mctx->cert_chain;
651 * Optionally configure extra server certificate chain certificates.
652 * This is usually done by OpenSSL automatically when one of the
653 * server cert issuers are found under SSLCACertificatePath or in
654 * SSLCACertificateFile. But because these are intended for client
655 * authentication it can conflict. For instance when you use a
656 * Global ID server certificate you've to send out the intermediate
657 * CA certificate, too. When you would just configure this with
658 * SSLCACertificateFile and also use client authentication mod_ssl
659 * would accept all clients also issued by this CA. Obviously this
660 * isn't what we want in this situation. So this feature here exists
661 * to allow one to explicity configure CA certificates which are
662 * used only for the server certificate chain.
668 for (i = 0; (i < SSL_AIDX_MAX) && mctx->pks->cert_files[i]; i++) {
669 if (strEQ(mctx->pks->cert_files[i], chain)) {
675 n = SSL_CTX_use_certificate_chain(mctx->ssl_ctx,
679 ssl_log(s, SSL_LOG_ERROR|SSL_INIT,
680 "Failed to configure CA certificate chain!");
684 ssl_log(s, SSL_LOG_TRACE|SSL_INIT,
685 "Configuring server certificate chain "
686 "(%d CA certificate%s)",
687 n, n == 1 ? "" : "s");
690 static void ssl_init_ctx(server_rec *s,
695 ssl_init_ctx_protocol(s, p, ptemp, mctx);
697 ssl_init_ctx_session_cache(s, p, ptemp, mctx);
699 ssl_init_ctx_callbacks(s, p, ptemp, mctx);
701 ssl_init_ctx_verify(s, p, ptemp, mctx);
703 ssl_init_ctx_cipher_suite(s, p, ptemp, mctx);
705 ssl_init_ctx_crl(s, p, ptemp, mctx);
708 /* XXX: proxy support? */
709 ssl_init_ctx_cert_chain(s, p, ptemp, mctx);
713 static int ssl_server_import_cert(server_rec *s,
718 SSLModConfigRec *mc = myModConfig(s);
721 const char *type = ssl_asn1_keystr(idx);
724 if (!(asn1 = ssl_asn1_table_get(mc->tPublicCert, id))) {
728 ssl_log(s, SSL_LOG_TRACE|SSL_INIT,
729 "Configuring %s server certificate", type);
732 if (!(cert = d2i_X509(NULL, &ptr, asn1->nData))) {
733 ssl_log(s, SSL_LOG_ERROR|SSL_ADD_SSLERR|SSL_INIT,
734 "Unable to import %s server certificate", type);
738 if (SSL_CTX_use_certificate(mctx->ssl_ctx, cert) <= 0) {
739 ssl_log(s, SSL_LOG_ERROR|SSL_ADD_SSLERR|SSL_INIT,
740 "Unable to configure %s server certificate", type);
744 mctx->pks->certs[idx] = cert;
749 static int ssl_server_import_key(server_rec *s,
754 SSLModConfigRec *mc = myModConfig(s);
757 const char *type = ssl_asn1_keystr(idx);
758 int pkey_type = (idx == SSL_AIDX_RSA) ? EVP_PKEY_RSA : EVP_PKEY_DSA;
761 if (!(asn1 = ssl_asn1_table_get(mc->tPrivateKey, id))) {
765 ssl_log(s, SSL_LOG_TRACE|SSL_INIT,
766 "Configuring %s server private key", type);
769 if (!(pkey = d2i_PrivateKey(pkey_type, NULL, &ptr, asn1->nData)))
771 ssl_log(s, SSL_LOG_ERROR|SSL_ADD_SSLERR|SSL_INIT,
772 "Unable to import %s server private key", type);
776 if (SSL_CTX_use_PrivateKey(mctx->ssl_ctx, pkey) <= 0) {
777 ssl_log(s, SSL_LOG_ERROR|SSL_ADD_SSLERR|SSL_INIT,
778 "Unable to configure %s server private key", type);
783 * XXX: wonder if this is still needed, this is old todo doc.
784 * (see http://www.psy.uq.edu.au/~ftp/Crypto/ssleay/TODO.html)
786 if ((pkey_type == EVP_PKEY_DSA) && mctx->pks->certs[idx]) {
787 EVP_PKEY *pubkey = X509_get_pubkey(mctx->pks->certs[idx]);
789 if (pubkey && EVP_PKEY_missing_parameters(pubkey)) {
790 EVP_PKEY_copy_parameters(pubkey, pkey);
791 ssl_log(s, SSL_LOG_ERROR|SSL_ADD_SSLERR|SSL_INIT,
792 "Copying DSA parameters from private key to certificate");
796 mctx->pks->keys[idx] = pkey;
801 static void ssl_check_public_cert(server_rec *s,
814 * Some information about the certificate(s)
817 if (SSL_X509_isSGC(cert)) {
818 ssl_log(s, SSL_LOG_INFO|SSL_INIT,
819 "%s server certificate enables "
820 "Server Gated Cryptography (SGC)",
821 ssl_asn1_keystr(type));
824 if (SSL_X509_getBC(cert, &is_ca, &pathlen)) {
826 ssl_log(s, SSL_LOG_WARN|SSL_INIT,
827 "%s server certificate is a CA certificate "
828 "(BasicConstraints: CA == TRUE !?)",
829 ssl_asn1_keystr(type));
833 ssl_log(s, SSL_LOG_WARN|SSL_INIT,
834 "%s server certificate is not a leaf certificate "
835 "(BasicConstraints: pathlen == %d > 0 !?)",
836 ssl_asn1_keystr(type), pathlen);
840 if (SSL_X509_getCN(ptemp, cert, &cn)) {
841 int fnm_flags = FNM_PERIOD|FNM_CASE_BLIND;
843 if (apr_is_fnmatch(cn) &&
844 (apr_fnmatch(cn, s->server_hostname,
845 fnm_flags) == FNM_NOMATCH))
847 ssl_log(s, SSL_LOG_WARN|SSL_INIT,
848 "%s server certificate wildcard CommonName (CN) `%s' "
849 "does NOT match server name!?",
850 ssl_asn1_keystr(type), cn);
852 else if (strNE(s->server_hostname, cn)) {
853 ssl_log(s, SSL_LOG_WARN|SSL_INIT,
854 "%s server certificate CommonName (CN) `%s' "
855 "does NOT match server name!?",
856 ssl_asn1_keystr(type), cn);
861 static void ssl_init_server_certs(server_rec *s,
866 const char *rsa_id, *dsa_id;
867 const char *vhost_id = mctx->sc->vhost_id;
869 int have_rsa, have_dsa;
871 rsa_id = ssl_asn1_table_keyfmt(ptemp, vhost_id, SSL_AIDX_RSA);
872 dsa_id = ssl_asn1_table_keyfmt(ptemp, vhost_id, SSL_AIDX_DSA);
874 have_rsa = ssl_server_import_cert(s, mctx, rsa_id, SSL_AIDX_RSA);
875 have_dsa = ssl_server_import_cert(s, mctx, dsa_id, SSL_AIDX_DSA);
877 if (!(have_rsa || have_dsa)) {
878 ssl_log(s, SSL_LOG_ERROR|SSL_INIT,
879 "Oops, no RSA or DSA server certificate found?!");
883 for (i = 0; i < SSL_AIDX_MAX; i++) {
884 ssl_check_public_cert(s, ptemp, mctx->pks->certs[i], i);
887 have_rsa = ssl_server_import_key(s, mctx, rsa_id, SSL_AIDX_RSA);
888 have_dsa = ssl_server_import_key(s, mctx, dsa_id, SSL_AIDX_DSA);
890 if (!(have_rsa || have_dsa)) {
891 ssl_log(s, SSL_LOG_ERROR|SSL_INIT,
892 "Oops, no RSA or DSA server private key found?!");
897 static void ssl_init_proxy_certs(server_rec *s,
903 STACK_OF(X509_INFO) *sk;
904 modssl_pk_proxy_t *pkp = mctx->pkp;
906 SSL_CTX_set_client_cert_cb(mctx->ssl_ctx,
907 ssl_callback_proxy_cert);
909 if (!(pkp->cert_file || pkp->cert_path)) {
913 sk = sk_X509_INFO_new_null();
915 if (pkp->cert_file) {
916 SSL_X509_INFO_load_file(ptemp, sk, pkp->cert_file);
919 if (pkp->cert_path) {
920 SSL_X509_INFO_load_file(ptemp, sk, pkp->cert_path);
923 if ((ncerts = sk_X509_INFO_num(sk)) > 0) {
924 ssl_log(s, SSL_LOG_TRACE|SSL_INIT,
925 "loaded %d client certs for SSL proxy",
931 ssl_log(s, SSL_LOG_WARN|SSL_INIT,
932 "no client certs found for SSL proxy");
933 sk_X509_INFO_free(sk);
937 static void ssl_init_proxy_ctx(server_rec *s,
942 ssl_init_ctx(s, p, ptemp, sc->proxy);
944 ssl_init_proxy_certs(s, p, ptemp, sc->proxy);
947 static void ssl_init_server_ctx(server_rec *s,
952 ssl_init_server_check(s, p, ptemp, sc->server);
954 ssl_init_ctx(s, p, ptemp, sc->server);
956 ssl_init_server_certs(s, p, ptemp, sc->server);
960 * Configure a particular server
962 void ssl_init_ConfigureServer(server_rec *s,
968 ssl_log(s, SSL_LOG_INFO|SSL_INIT,
969 "Configuring server for SSL protocol");
970 ssl_init_server_ctx(s, p, ptemp, sc);
973 if (sc->proxy_enabled) {
974 ssl_init_proxy_ctx(s, p, ptemp, sc);
978 void ssl_init_CheckServers(server_rec *base_server, apr_pool_t *p)
986 BOOL conflict = FALSE;
989 * Give out warnings when a server has HTTPS configured
990 * for the HTTP port or vice versa
992 for (s = base_server; s; s = s->next) {
995 if (sc->enabled && (s->port == DEFAULT_HTTP_PORT)) {
996 ssl_log(base_server, SSL_LOG_WARN,
997 "Init: (%s) You configured HTTPS(%d) "
998 "on the standard HTTP(%d) port!",
999 ssl_util_vhostid(p, s),
1000 DEFAULT_HTTPS_PORT, DEFAULT_HTTP_PORT);
1003 if (!sc->enabled && (s->port == DEFAULT_HTTPS_PORT)) {
1004 ssl_log(base_server, SSL_LOG_WARN,
1005 "Init: (%s) You configured HTTP(%d) "
1006 "on the standard HTTPS(%d) port!",
1007 ssl_util_vhostid(p, s),
1008 DEFAULT_HTTP_PORT, DEFAULT_HTTPS_PORT);
1013 * Give out warnings when more than one SSL-aware virtual server uses the
1014 * same IP:port. This doesn't work because mod_ssl then will always use
1015 * just the certificate/keys of one virtual host (which one cannot be said
1016 * easily - but that doesn't matter here).
1018 table = apr_hash_make(p);
1020 for (s = base_server; s; s = s->next) {
1021 sc = mySrvConfig(s);
1027 key = apr_psprintf(p, "%pA:%u",
1028 &s->addrs->host_addr, s->addrs->host_port);
1031 if ((ps = (server_rec *)apr_hash_get(table, key, klen))) {
1032 ssl_log(base_server, SSL_LOG_WARN,
1033 "Init: SSL server IP/port conflict: "
1034 "%s (%s:%d) vs. %s (%s:%d)",
1035 ssl_util_vhostid(p, s),
1036 (s->defn_name ? s->defn_name : "unknown"),
1037 s->defn_line_number,
1038 ssl_util_vhostid(p, ps),
1039 (ps->defn_name ? ps->defn_name : "unknown"),
1040 ps->defn_line_number);
1045 apr_hash_set(table, key, klen, s);
1049 ssl_log(base_server, SSL_LOG_WARN,
1050 "Init: You should not use name-based "
1051 "virtual hosts in conjunction with SSL!!");
1055 static int ssl_init_FindCAList_X509NameCmp(X509_NAME **a, X509_NAME **b)
1057 return(X509_NAME_cmp(*a, *b));
1060 static void ssl_init_PushCAList(STACK_OF(X509_NAME) *ca_list,
1061 server_rec *s, const char *file)
1064 STACK_OF(X509_NAME) *sk;
1066 sk = (STACK_OF(X509_NAME) *)SSL_load_client_CA_file(file);
1072 for (n = 0; n < sk_X509_NAME_num(sk); n++) {
1074 X509_NAME *name = sk_X509_NAME_value(sk, n);
1076 ssl_log(s, SSL_LOG_TRACE,
1077 "CA certificate: %s",
1078 X509_NAME_oneline(name, name_buf, sizeof(name_buf)));
1081 * note that SSL_load_client_CA_file() checks for duplicates,
1082 * but since we call it multiple times when reading a directory
1083 * we must also check for duplicates ourselves.
1086 if (sk_X509_NAME_find(ca_list, name) < 0) {
1087 /* this will be freed when ca_list is */
1088 sk_X509_NAME_push(ca_list, name);
1091 /* need to free this ourselves, else it will leak */
1092 X509_NAME_free(name);
1096 sk_X509_NAME_free(sk);
1099 STACK_OF(X509_NAME) *ssl_init_FindCAList(server_rec *s,
1101 const char *ca_file,
1102 const char *ca_path)
1104 STACK_OF(X509_NAME) *ca_list;
1107 * Start with a empty stack/list where new
1108 * entries get added in sorted order.
1110 ca_list = sk_X509_NAME_new(ssl_init_FindCAList_X509NameCmp);
1113 * Process CA certificate bundle file
1116 ssl_init_PushCAList(ca_list, s, ca_file);
1120 * Process CA certificate path files
1124 apr_finfo_t direntry;
1125 apr_int32_t finfo_flags = APR_FINFO_MIN|APR_FINFO_NAME;
1127 if (apr_dir_open(&dir, ca_path, ptemp) != APR_SUCCESS) {
1128 ssl_log(s, SSL_LOG_ERROR|SSL_ADD_ERRNO|SSL_INIT,
1129 "Failed to open SSLCACertificatePath `%s'",
1134 while ((apr_dir_read(&direntry, finfo_flags, dir)) == APR_SUCCESS) {
1136 if (direntry.filetype == APR_DIR) {
1137 continue; /* don't try to load directories */
1139 file = apr_pstrcat(ptemp, ca_path, "/", direntry.name, NULL);
1140 ssl_init_PushCAList(ca_list, s, file);
1149 sk_X509_NAME_set_cmp_func(ca_list, NULL);
1154 void ssl_init_Child(apr_pool_t *p, server_rec *s)
1156 SSLModConfigRec *mc = myModConfig(s);
1157 mc->pid = getpid(); /* only call getpid() once per-process */
1159 /* XXX: there should be an ap_srand() function */
1160 srand((unsigned int)time(NULL));
1162 /* open the mutex lockfile */
1163 ssl_mutex_reinit(s, p);
1166 #define MODSSL_CFG_ITEM_FREE(func, item) \
1172 static void ssl_init_ctx_cleanup(modssl_ctx_t *mctx)
1174 MODSSL_CFG_ITEM_FREE(X509_STORE_free, mctx->crl);
1176 MODSSL_CFG_ITEM_FREE(SSL_CTX_free, mctx->ssl_ctx);
1179 static void ssl_init_ctx_cleanup_proxy(modssl_ctx_t *mctx)
1181 ssl_init_ctx_cleanup(mctx);
1183 if (mctx->pkp->certs) {
1184 sk_X509_INFO_pop_free(mctx->pkp->certs, X509_INFO_free);
1188 static void ssl_init_ctx_cleanup_server(modssl_ctx_t *mctx)
1192 ssl_init_ctx_cleanup(mctx);
1194 for (i=0; i < SSL_AIDX_MAX; i++) {
1195 MODSSL_CFG_ITEM_FREE(X509_free,
1196 mctx->pks->certs[i]);
1198 MODSSL_CFG_ITEM_FREE(EVP_PKEY_free,
1199 mctx->pks->keys[i]);
1203 apr_status_t ssl_init_ModuleKill(void *data)
1205 SSLSrvConfigRec *sc;
1206 server_rec *base_server = (server_rec *)data;
1210 * Drop the session cache and mutex
1212 ssl_scache_kill(base_server);
1215 * Destroy the temporary keys and params
1217 ssl_tmp_keys_free(base_server);
1220 * Free the non-pool allocated structures
1221 * in the per-server configurations
1223 for (s = base_server; s; s = s->next) {
1224 sc = mySrvConfig(s);
1226 ssl_init_ctx_cleanup_proxy(sc->proxy);
1228 ssl_init_ctx_cleanup_server(sc->server);
1232 * Try to kill the internals of the SSL library.
1235 ERR_remove_state(0);