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.
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37 * not be used to endorse or promote products derived from this
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39 * permission, please contact apache@apache.org.
41 * 5. Products derived from this software may not be called "Apache",
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47 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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49 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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51 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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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 ap_log_error(APLOG_MARK, APLOG_INFO, 0, s,
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 ap_log_error(APLOG_MARK, APLOG_INFO, 0, s,
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 int 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 ap_log_error(APLOG_MARK, APLOG_ERR, 0, s,
153 "Init: Failed to generate temporary "
154 "%d bit RSA private key", bits);
161 static int ssl_tmp_key_init_dh(server_rec *s,
164 SSLModConfigRec *mc = myModConfig(s);
166 if (!(mc->pTmpKeys[idx] =
167 ssl_dh_GetTmpParam(bits)))
169 ap_log_error(APLOG_MARK, APLOG_ERR, 0, s,
170 "Init: Failed to generate temporary "
171 "%d bit DH parameters", bits);
178 #define MODSSL_TMP_KEY_INIT_RSA(s, bits) \
179 ssl_tmp_key_init_rsa(s, bits, SSL_TMP_KEY_RSA_##bits)
181 #define MODSSL_TMP_KEY_INIT_DH(s, bits) \
182 ssl_tmp_key_init_dh(s, bits, SSL_TMP_KEY_DH_##bits)
184 static int ssl_tmp_keys_init(server_rec *s)
186 ap_log_error(APLOG_MARK, APLOG_INFO, 0, s,
187 "Init: Generating temporary RSA private keys (512/1024 bits)");
189 if (MODSSL_TMP_KEY_INIT_RSA(s, 512) ||
190 MODSSL_TMP_KEY_INIT_RSA(s, 1024)) {
194 ap_log_error(APLOG_MARK, APLOG_INFO, 0, s,
195 "Init: Generating temporary DH parameters (512/1024 bits)");
197 if (MODSSL_TMP_KEY_INIT_DH(s, 512) ||
198 MODSSL_TMP_KEY_INIT_DH(s, 1024)) {
206 * Per-module initialization
208 int ssl_init_Module(apr_pool_t *p, apr_pool_t *plog,
210 server_rec *base_server)
212 SSLModConfigRec *mc = myModConfig(base_server);
217 * Let us cleanup on restarts and exists
219 apr_pool_cleanup_register(p, base_server,
221 apr_pool_cleanup_null);
224 * Any init round fixes the global config
226 ssl_config_global_create(base_server); /* just to avoid problems */
227 ssl_config_global_fix(mc);
230 * try to fix the configuration and open the dedicated SSL
231 * logfile as early as possible
233 for (s = base_server; s; s = s->next) {
245 * Create the server host:port string because we need it a lot
247 sc->vhost_id = ssl_util_vhostid(p, s);
248 sc->vhost_id_len = strlen(sc->vhost_id);
250 /* Fix up stuff that may not have been set */
251 if (sc->enabled == UNSET) {
255 if (sc->proxy_enabled == UNSET) {
256 sc->proxy_enabled = FALSE;
259 if (sc->session_cache_timeout == UNSET) {
260 sc->session_cache_timeout = SSL_SESSION_CACHE_TIMEOUT;
263 if (sc->server->pphrase_dialog_type == SSL_PPTYPE_UNSET) {
264 sc->server->pphrase_dialog_type = SSL_PPTYPE_BUILTIN;
270 * SSL external crypto device ("engine") support
272 #ifdef SSL_EXPERIMENTAL_ENGINE
273 ssl_init_Engine(base_server, p);
276 ssl_init_SSLLibrary(base_server);
279 ssl_util_thread_setup(p);
283 * Seed the Pseudo Random Number Generator (PRNG)
284 * only need ptemp here; nothing inside allocated from the pool
285 * needs to live once we return from ssl_rand_seed().
287 ssl_rand_seed(base_server, ptemp, SSL_RSCTX_STARTUP, "Init: ");
290 * read server private keys/public certs into memory.
291 * decrypting any encrypted keys via configured SSLPassPhraseDialogs
292 * anything that needs to live longer than ptemp needs to also survive
293 * restarts, in which case they'll live inside s->process->pool.
295 ssl_pphrase_Handle(base_server, ptemp);
297 if (ssl_tmp_keys_init(base_server)) {
302 * initialize the mutex handling
304 if (!ssl_mutex_init(base_server, p)) {
305 return HTTP_INTERNAL_SERVER_ERROR;
309 * initialize session caching
311 ssl_scache_init(base_server, p);
316 ap_log_error(APLOG_MARK, APLOG_INFO, 0, base_server,
317 "Init: Initializing (virtual) servers for SSL");
319 for (s = base_server; s; s = s->next) {
322 * Either now skip this server when SSL is disabled for
323 * it or give out some information about what we're
328 * Read the server certificate and key
330 ssl_init_ConfigureServer(s, p, ptemp, sc);
334 * Configuration consistency checks
336 ssl_init_CheckServers(base_server, ptemp);
339 * Announce mod_ssl and SSL library in HTTP Server field
340 * as ``mod_ssl/X.X.X OpenSSL/X.X.X''
342 ssl_add_version_components(p, base_server);
344 SSL_init_app_data2_idx(); /* for SSL_get_app_data2() at request time */
350 * Support for external a Crypto Device ("engine"), usually
351 * a hardware accellerator card for crypto operations.
353 #ifdef SSL_EXPERIMENTAL_ENGINE
354 void ssl_init_Engine(server_rec *s, apr_pool_t *p)
356 SSLModConfigRec *mc = myModConfig(s);
359 if (mc->szCryptoDevice) {
360 if (!(e = ENGINE_by_id(mc->szCryptoDevice))) {
361 ap_log_error(APLOG_MARK, APLOG_ERR, 0, s,
362 "Init: Failed to load Crypto Device API `%s'",
367 if (strEQ(mc->szCryptoDevice, "chil")) {
368 ENGINE_ctrl(e, ENGINE_CTRL_CHIL_SET_FORKCHECK, 1, 0, 0);
371 if (!ENGINE_set_default(e, ENGINE_METHOD_ALL)) {
372 ap_log_error(APLOG_MARK, APLOG_ERR, 0, s,
373 "Init: Failed to enable Crypto Device API `%s'",
383 static void ssl_init_server_check(server_rec *s,
389 * check for important parameters and the
390 * possibility that the user forgot to set them.
392 if (!mctx->pks->cert_files[0]) {
393 ap_log_error(APLOG_MARK, APLOG_ERR, 0, s,
394 "No SSL Certificate set [hint: SSLCertificateFile]");
399 * Check for problematic re-initializations
401 if (mctx->pks->certs[SSL_AIDX_RSA] ||
402 mctx->pks->certs[SSL_AIDX_DSA])
404 ap_log_error(APLOG_MARK, APLOG_ERR, 0, s,
405 "Illegal attempt to re-initialise SSL for server "
406 "(theoretically shouldn't happen!)");
411 static void ssl_init_ctx_protocol(server_rec *s,
417 SSL_METHOD *method = NULL;
419 int protocol = mctx->protocol;
422 * Create the new per-server SSL context
424 if (protocol == SSL_PROTOCOL_NONE) {
425 ap_log_error(APLOG_MARK, APLOG_ERR, 0, s,
426 "No SSL protocols available [hint: SSLProtocol]");
431 (protocol & SSL_PROTOCOL_SSLV2 ? "SSLv2, " : ""),
432 (protocol & SSL_PROTOCOL_SSLV3 ? "SSLv3, " : ""),
433 (protocol & SSL_PROTOCOL_TLSV1 ? "TLSv1, " : ""),
435 cp[strlen(cp)-2] = NUL;
437 ap_log_error(APLOG_MARK, APLOG_DEBUG, 0, s,
438 "Creating new SSL context (protocols: %s)", cp);
440 if (protocol == SSL_PROTOCOL_SSLV2) {
442 SSLv2_client_method() : /* proxy */
443 SSLv2_server_method(); /* server */
444 ctx = SSL_CTX_new(method); /* only SSLv2 is left */
448 SSLv23_client_method() : /* proxy */
449 SSLv23_server_method(); /* server */
450 ctx = SSL_CTX_new(method); /* be more flexible */
455 SSL_CTX_set_options(ctx, SSL_OP_ALL);
457 if (!(protocol & SSL_PROTOCOL_SSLV2)) {
458 SSL_CTX_set_options(ctx, SSL_OP_NO_SSLv2);
461 if (!(protocol & SSL_PROTOCOL_SSLV3)) {
462 SSL_CTX_set_options(ctx, SSL_OP_NO_SSLv3);
465 if (!(protocol & SSL_PROTOCOL_TLSV1)) {
466 SSL_CTX_set_options(ctx, SSL_OP_NO_TLSv1);
469 SSL_CTX_set_app_data(ctx, s);
472 * Configure additional context ingredients
474 SSL_CTX_set_options(ctx, SSL_OP_SINGLE_DH_USE);
477 static void ssl_init_ctx_session_cache(server_rec *s,
482 SSL_CTX *ctx = mctx->ssl_ctx;
483 SSLModConfigRec *mc = myModConfig(s);
484 long cache_mode = SSL_SESS_CACHE_OFF;
486 if (mc->nSessionCacheMode != SSL_SCMODE_NONE) {
487 /* SSL_SESS_CACHE_NO_INTERNAL_LOOKUP will force OpenSSL
488 * to ignore process local-caching and
489 * to always get/set/delete sessions using mod_ssl's callbacks.
491 cache_mode = SSL_SESS_CACHE_SERVER|SSL_SESS_CACHE_NO_INTERNAL_LOOKUP;
494 SSL_CTX_set_session_cache_mode(ctx, cache_mode);
496 SSL_CTX_sess_set_new_cb(ctx, ssl_callback_NewSessionCacheEntry);
497 SSL_CTX_sess_set_get_cb(ctx, ssl_callback_GetSessionCacheEntry);
498 SSL_CTX_sess_set_remove_cb(ctx, ssl_callback_DelSessionCacheEntry);
501 static void ssl_init_ctx_callbacks(server_rec *s,
506 SSL_CTX *ctx = mctx->ssl_ctx;
508 SSL_CTX_set_tmp_rsa_callback(ctx, ssl_callback_TmpRSA);
509 SSL_CTX_set_tmp_dh_callback(ctx, ssl_callback_TmpDH);
511 if (s->loglevel >= APLOG_DEBUG) {
512 /* this callback only logs if LogLevel >= info */
513 SSL_CTX_set_info_callback(ctx, ssl_callback_LogTracingState);
517 static void ssl_init_ctx_verify(server_rec *s,
522 SSL_CTX *ctx = mctx->ssl_ctx;
524 int verify = SSL_VERIFY_NONE;
525 STACK_OF(X509_NAME) *ca_list;
527 if (mctx->auth.verify_mode == SSL_CVERIFY_UNSET) {
528 mctx->auth.verify_mode = SSL_CVERIFY_NONE;
531 if (mctx->auth.verify_depth == UNSET) {
532 mctx->auth.verify_depth = 1;
536 * Configure callbacks for SSL context
538 if (mctx->auth.verify_mode == SSL_CVERIFY_REQUIRE) {
539 verify |= SSL_VERIFY_PEER_STRICT;
542 if ((mctx->auth.verify_mode == SSL_CVERIFY_OPTIONAL) ||
543 (mctx->auth.verify_mode == SSL_CVERIFY_OPTIONAL_NO_CA))
545 verify |= SSL_VERIFY_PEER;
548 SSL_CTX_set_verify(ctx, verify, ssl_callback_SSLVerify);
551 * Configure Client Authentication details
553 if (mctx->auth.ca_cert_file || mctx->auth.ca_cert_path) {
554 ap_log_error(APLOG_MARK, APLOG_DEBUG, 0, s,
555 "Configuring client authentication");
557 if (!SSL_CTX_load_verify_locations(ctx,
558 mctx->auth.ca_cert_file,
559 mctx->auth.ca_cert_path))
561 ap_log_error(APLOG_MARK, APLOG_ERR, 0, s,
562 "Unable to configure verify locations "
563 "for client authentication");
564 ssl_log_ssl_error(APLOG_MARK, APLOG_ERR, s);
568 ca_list = ssl_init_FindCAList(s, ptemp,
569 mctx->auth.ca_cert_file,
570 mctx->auth.ca_cert_path);
572 ap_log_error(APLOG_MARK, APLOG_ERR, 0, s,
573 "Unable to determine list of available "
574 "CA certificates for client authentication");
578 SSL_CTX_set_client_CA_list(ctx, (STACK *)ca_list);
582 * Give a warning when no CAs were configured but client authentication
583 * should take place. This cannot work.
585 if (mctx->auth.verify_mode == SSL_CVERIFY_REQUIRE) {
586 ca_list = (STACK_OF(X509_NAME) *)SSL_CTX_get_client_CA_list(ctx);
588 if (sk_X509_NAME_num(ca_list) == 0) {
589 ap_log_error(APLOG_MARK, APLOG_WARNING, 0, s,
590 "Init: Oops, you want to request client "
591 "authentication, but no CAs are known for "
592 "verification!? [Hint: SSLCACertificate*]");
597 static void ssl_init_ctx_cipher_suite(server_rec *s,
602 SSL_CTX *ctx = mctx->ssl_ctx;
603 const char *suite = mctx->auth.cipher_suite;
606 * Configure SSL Cipher Suite
612 ap_log_error(APLOG_MARK, APLOG_DEBUG, 0, s,
613 "Configuring permitted SSL ciphers [%s]",
616 if (!SSL_CTX_set_cipher_list(ctx, suite)) {
617 ap_log_error(APLOG_MARK, APLOG_ERR, 0, s,
618 "Unable to configure permitted SSL ciphers");
619 ssl_log_ssl_error(APLOG_MARK, APLOG_ERR, s);
624 static void ssl_init_ctx_crl(server_rec *s,
630 * Configure Certificate Revocation List (CRL) Details
633 if (!(mctx->crl_file || mctx->crl_path)) {
637 ap_log_error(APLOG_MARK, APLOG_DEBUG, 0, s,
638 "Configuring certificate revocation facility");
641 SSL_X509_STORE_create((char *)mctx->crl_file,
642 (char *)mctx->crl_path);
645 ap_log_error(APLOG_MARK, APLOG_ERR, 0, s,
646 "Unable to configure X.509 CRL storage "
647 "for certificate revocation");
648 ssl_log_ssl_error(APLOG_MARK, APLOG_ERR, s);
653 static void ssl_init_ctx_cert_chain(server_rec *s,
658 BOOL skip_first = TRUE;
660 const char *chain = mctx->cert_chain;
663 * Optionally configure extra server certificate chain certificates.
664 * This is usually done by OpenSSL automatically when one of the
665 * server cert issuers are found under SSLCACertificatePath or in
666 * SSLCACertificateFile. But because these are intended for client
667 * authentication it can conflict. For instance when you use a
668 * Global ID server certificate you've to send out the intermediate
669 * CA certificate, too. When you would just configure this with
670 * SSLCACertificateFile and also use client authentication mod_ssl
671 * would accept all clients also issued by this CA. Obviously this
672 * isn't what we want in this situation. So this feature here exists
673 * to allow one to explicity configure CA certificates which are
674 * used only for the server certificate chain.
680 for (i = 0; (i < SSL_AIDX_MAX) && mctx->pks->cert_files[i]; i++) {
681 if (strEQ(mctx->pks->cert_files[i], chain)) {
687 n = SSL_CTX_use_certificate_chain(mctx->ssl_ctx,
691 ap_log_error(APLOG_MARK, APLOG_ERR, 0, s,
692 "Failed to configure CA certificate chain!");
696 ap_log_error(APLOG_MARK, APLOG_DEBUG, 0, s,
697 "Configuring server certificate chain "
698 "(%d CA certificate%s)",
699 n, n == 1 ? "" : "s");
702 static void ssl_init_ctx(server_rec *s,
707 ssl_init_ctx_protocol(s, p, ptemp, mctx);
709 ssl_init_ctx_session_cache(s, p, ptemp, mctx);
711 ssl_init_ctx_callbacks(s, p, ptemp, mctx);
713 ssl_init_ctx_verify(s, p, ptemp, mctx);
715 ssl_init_ctx_cipher_suite(s, p, ptemp, mctx);
717 ssl_init_ctx_crl(s, p, ptemp, mctx);
720 /* XXX: proxy support? */
721 ssl_init_ctx_cert_chain(s, p, ptemp, mctx);
725 static int ssl_server_import_cert(server_rec *s,
730 SSLModConfigRec *mc = myModConfig(s);
733 const char *type = ssl_asn1_keystr(idx);
736 if (!(asn1 = ssl_asn1_table_get(mc->tPublicCert, id))) {
740 ap_log_error(APLOG_MARK, APLOG_DEBUG, 0, s,
741 "Configuring %s server certificate", type);
744 if (!(cert = d2i_X509(NULL, &ptr, asn1->nData))) {
745 ap_log_error(APLOG_MARK, APLOG_ERR, 0, s,
746 "Unable to import %s server certificate", type);
747 ssl_log_ssl_error(APLOG_MARK, APLOG_ERR, s);
751 if (SSL_CTX_use_certificate(mctx->ssl_ctx, cert) <= 0) {
752 ap_log_error(APLOG_MARK, APLOG_ERR, 0, s,
753 "Unable to configure %s server certificate", type);
754 ssl_log_ssl_error(APLOG_MARK, APLOG_ERR, s);
758 mctx->pks->certs[idx] = cert;
763 static int ssl_server_import_key(server_rec *s,
768 SSLModConfigRec *mc = myModConfig(s);
771 const char *type = ssl_asn1_keystr(idx);
772 int pkey_type = (idx == SSL_AIDX_RSA) ? EVP_PKEY_RSA : EVP_PKEY_DSA;
775 if (!(asn1 = ssl_asn1_table_get(mc->tPrivateKey, id))) {
779 ap_log_error(APLOG_MARK, APLOG_DEBUG, 0, s,
780 "Configuring %s server private key", type);
783 if (!(pkey = d2i_PrivateKey(pkey_type, NULL, &ptr, asn1->nData)))
785 ap_log_error(APLOG_MARK, APLOG_ERR, 0, s,
786 "Unable to import %s server private key", type);
787 ssl_log_ssl_error(APLOG_MARK, APLOG_ERR, s);
791 if (SSL_CTX_use_PrivateKey(mctx->ssl_ctx, pkey) <= 0) {
792 ap_log_error(APLOG_MARK, APLOG_ERR, 0, s,
793 "Unable to configure %s server private key", type);
794 ssl_log_ssl_error(APLOG_MARK, APLOG_ERR, s);
799 * XXX: wonder if this is still needed, this is old todo doc.
800 * (see http://www.psy.uq.edu.au/~ftp/Crypto/ssleay/TODO.html)
802 if ((pkey_type == EVP_PKEY_DSA) && mctx->pks->certs[idx]) {
803 EVP_PKEY *pubkey = X509_get_pubkey(mctx->pks->certs[idx]);
805 if (pubkey && EVP_PKEY_missing_parameters(pubkey)) {
806 EVP_PKEY_copy_parameters(pubkey, pkey);
807 ap_log_error(APLOG_MARK, APLOG_ERR, 0, s,
808 "Copying DSA parameters from private key to certificate");
809 ssl_log_ssl_error(APLOG_MARK, APLOG_ERR, s);
810 EVP_PKEY_free(pubkey);
814 mctx->pks->keys[idx] = pkey;
819 static void ssl_check_public_cert(server_rec *s,
832 * Some information about the certificate(s)
835 if (SSL_X509_isSGC(cert)) {
836 ap_log_error(APLOG_MARK, APLOG_INFO, 0, s,
837 "%s server certificate enables "
838 "Server Gated Cryptography (SGC)",
839 ssl_asn1_keystr(type));
842 if (SSL_X509_getBC(cert, &is_ca, &pathlen)) {
844 ap_log_error(APLOG_MARK, APLOG_WARNING, 0, s,
845 "%s server certificate is a CA certificate "
846 "(BasicConstraints: CA == TRUE !?)",
847 ssl_asn1_keystr(type));
851 ap_log_error(APLOG_MARK, APLOG_WARNING, 0, s,
852 "%s server certificate is not a leaf certificate "
853 "(BasicConstraints: pathlen == %d > 0 !?)",
854 ssl_asn1_keystr(type), pathlen);
858 if (SSL_X509_getCN(ptemp, cert, &cn)) {
859 int fnm_flags = FNM_PERIOD|FNM_CASE_BLIND;
861 if (apr_fnmatch_test(cn) &&
862 (apr_fnmatch(cn, s->server_hostname,
863 fnm_flags) == FNM_NOMATCH))
865 ap_log_error(APLOG_MARK, APLOG_WARNING, 0, s,
866 "%s server certificate wildcard CommonName (CN) `%s' "
867 "does NOT match server name!?",
868 ssl_asn1_keystr(type), cn);
870 else if (strNE(s->server_hostname, cn)) {
871 ap_log_error(APLOG_MARK, APLOG_WARNING, 0, s,
872 "%s server certificate CommonName (CN) `%s' "
873 "does NOT match server name!?",
874 ssl_asn1_keystr(type), cn);
879 static void ssl_init_server_certs(server_rec *s,
884 const char *rsa_id, *dsa_id;
885 const char *vhost_id = mctx->sc->vhost_id;
887 int have_rsa, have_dsa;
889 rsa_id = ssl_asn1_table_keyfmt(ptemp, vhost_id, SSL_AIDX_RSA);
890 dsa_id = ssl_asn1_table_keyfmt(ptemp, vhost_id, SSL_AIDX_DSA);
892 have_rsa = ssl_server_import_cert(s, mctx, rsa_id, SSL_AIDX_RSA);
893 have_dsa = ssl_server_import_cert(s, mctx, dsa_id, SSL_AIDX_DSA);
895 if (!(have_rsa || have_dsa)) {
896 ap_log_error(APLOG_MARK, APLOG_ERR, 0, s,
897 "Oops, no RSA or DSA server certificate found?!");
901 for (i = 0; i < SSL_AIDX_MAX; i++) {
902 ssl_check_public_cert(s, ptemp, mctx->pks->certs[i], i);
905 have_rsa = ssl_server_import_key(s, mctx, rsa_id, SSL_AIDX_RSA);
906 have_dsa = ssl_server_import_key(s, mctx, dsa_id, SSL_AIDX_DSA);
908 if (!(have_rsa || have_dsa)) {
909 ap_log_error(APLOG_MARK, APLOG_ERR, 0, s,
910 "Oops, no RSA or DSA server private key found?!");
915 static void ssl_init_proxy_certs(server_rec *s,
921 STACK_OF(X509_INFO) *sk;
922 modssl_pk_proxy_t *pkp = mctx->pkp;
924 SSL_CTX_set_client_cert_cb(mctx->ssl_ctx,
925 ssl_callback_proxy_cert);
927 if (!(pkp->cert_file || pkp->cert_path)) {
931 sk = sk_X509_INFO_new_null();
933 if (pkp->cert_file) {
934 SSL_X509_INFO_load_file(ptemp, sk, pkp->cert_file);
937 if (pkp->cert_path) {
938 SSL_X509_INFO_load_path(ptemp, sk, pkp->cert_path);
941 if ((ncerts = sk_X509_INFO_num(sk)) > 0) {
942 ap_log_error(APLOG_MARK, APLOG_DEBUG, 0, s,
943 "loaded %d client certs for SSL proxy",
949 ap_log_error(APLOG_MARK, APLOG_WARNING, 0, s,
950 "no client certs found for SSL proxy");
951 sk_X509_INFO_free(sk);
955 static void ssl_init_proxy_ctx(server_rec *s,
960 ssl_init_ctx(s, p, ptemp, sc->proxy);
962 ssl_init_proxy_certs(s, p, ptemp, sc->proxy);
965 static void ssl_init_server_ctx(server_rec *s,
970 ssl_init_server_check(s, p, ptemp, sc->server);
972 ssl_init_ctx(s, p, ptemp, sc->server);
974 ssl_init_server_certs(s, p, ptemp, sc->server);
978 * Configure a particular server
980 void ssl_init_ConfigureServer(server_rec *s,
986 ap_log_error(APLOG_MARK, APLOG_INFO, 0, s,
987 "Configuring server for SSL protocol");
988 ssl_init_server_ctx(s, p, ptemp, sc);
991 if (sc->proxy_enabled) {
992 ssl_init_proxy_ctx(s, p, ptemp, sc);
996 void ssl_init_CheckServers(server_rec *base_server, apr_pool_t *p)
1004 BOOL conflict = FALSE;
1007 * Give out warnings when a server has HTTPS configured
1008 * for the HTTP port or vice versa
1010 for (s = base_server; s; s = s->next) {
1011 sc = mySrvConfig(s);
1013 if (sc->enabled && (s->port == DEFAULT_HTTP_PORT)) {
1014 ap_log_error(APLOG_MARK, APLOG_WARNING, 0,
1016 "Init: (%s) You configured HTTPS(%d) "
1017 "on the standard HTTP(%d) port!",
1018 ssl_util_vhostid(p, s),
1019 DEFAULT_HTTPS_PORT, DEFAULT_HTTP_PORT);
1022 if (!sc->enabled && (s->port == DEFAULT_HTTPS_PORT)) {
1023 ap_log_error(APLOG_MARK, APLOG_WARNING, 0,
1025 "Init: (%s) You configured HTTP(%d) "
1026 "on the standard HTTPS(%d) port!",
1027 ssl_util_vhostid(p, s),
1028 DEFAULT_HTTP_PORT, DEFAULT_HTTPS_PORT);
1033 * Give out warnings when more than one SSL-aware virtual server uses the
1034 * same IP:port. This doesn't work because mod_ssl then will always use
1035 * just the certificate/keys of one virtual host (which one cannot be said
1036 * easily - but that doesn't matter here).
1038 table = apr_hash_make(p);
1040 for (s = base_server; s; s = s->next) {
1041 sc = mySrvConfig(s);
1043 if (!(sc->enabled && s->addrs)) {
1047 key = apr_psprintf(p, "%pA:%u",
1048 &s->addrs->host_addr, s->addrs->host_port);
1051 if ((ps = (server_rec *)apr_hash_get(table, key, klen))) {
1052 ap_log_error(APLOG_MARK, APLOG_WARNING, 0,
1054 "Init: SSL server IP/port conflict: "
1055 "%s (%s:%d) vs. %s (%s:%d)",
1056 ssl_util_vhostid(p, s),
1057 (s->defn_name ? s->defn_name : "unknown"),
1058 s->defn_line_number,
1059 ssl_util_vhostid(p, ps),
1060 (ps->defn_name ? ps->defn_name : "unknown"),
1061 ps->defn_line_number);
1066 apr_hash_set(table, key, klen, s);
1070 ap_log_error(APLOG_MARK, APLOG_WARNING, 0, base_server,
1071 "Init: You should not use name-based "
1072 "virtual hosts in conjunction with SSL!!");
1076 static int ssl_init_FindCAList_X509NameCmp(X509_NAME **a, X509_NAME **b)
1078 return(X509_NAME_cmp(*a, *b));
1081 static void ssl_init_PushCAList(STACK_OF(X509_NAME) *ca_list,
1082 server_rec *s, const char *file)
1085 STACK_OF(X509_NAME) *sk;
1087 sk = (STACK_OF(X509_NAME) *)SSL_load_client_CA_file(file);
1093 for (n = 0; n < sk_X509_NAME_num(sk); n++) {
1095 X509_NAME *name = sk_X509_NAME_value(sk, n);
1097 ap_log_error(APLOG_MARK, APLOG_DEBUG, 0, s,
1098 "CA certificate: %s",
1099 X509_NAME_oneline(name, name_buf, sizeof(name_buf)));
1102 * note that SSL_load_client_CA_file() checks for duplicates,
1103 * but since we call it multiple times when reading a directory
1104 * we must also check for duplicates ourselves.
1107 if (sk_X509_NAME_find(ca_list, name) < 0) {
1108 /* this will be freed when ca_list is */
1109 sk_X509_NAME_push(ca_list, name);
1112 /* need to free this ourselves, else it will leak */
1113 X509_NAME_free(name);
1117 sk_X509_NAME_free(sk);
1120 STACK_OF(X509_NAME) *ssl_init_FindCAList(server_rec *s,
1122 const char *ca_file,
1123 const char *ca_path)
1125 STACK_OF(X509_NAME) *ca_list;
1128 * Start with a empty stack/list where new
1129 * entries get added in sorted order.
1131 ca_list = sk_X509_NAME_new(ssl_init_FindCAList_X509NameCmp);
1134 * Process CA certificate bundle file
1137 ssl_init_PushCAList(ca_list, s, ca_file);
1141 * Process CA certificate path files
1145 apr_finfo_t direntry;
1146 apr_int32_t finfo_flags = APR_FINFO_MIN|APR_FINFO_NAME;
1149 if ((rv = apr_dir_open(&dir, ca_path, ptemp)) != APR_SUCCESS) {
1150 ap_log_error(APLOG_MARK, APLOG_ERR, rv, s,
1151 "Failed to open SSLCACertificatePath `%s'",
1156 while ((apr_dir_read(&direntry, finfo_flags, dir)) == APR_SUCCESS) {
1158 if (direntry.filetype == APR_DIR) {
1159 continue; /* don't try to load directories */
1161 file = apr_pstrcat(ptemp, ca_path, "/", direntry.name, NULL);
1162 ssl_init_PushCAList(ca_list, s, file);
1171 sk_X509_NAME_set_cmp_func(ca_list, NULL);
1176 void ssl_init_Child(apr_pool_t *p, server_rec *s)
1178 SSLModConfigRec *mc = myModConfig(s);
1179 mc->pid = getpid(); /* only call getpid() once per-process */
1181 /* XXX: there should be an ap_srand() function */
1182 srand((unsigned int)time(NULL));
1184 /* open the mutex lockfile */
1185 ssl_mutex_reinit(s, p);
1188 #define MODSSL_CFG_ITEM_FREE(func, item) \
1194 static void ssl_init_ctx_cleanup(modssl_ctx_t *mctx)
1196 MODSSL_CFG_ITEM_FREE(X509_STORE_free, mctx->crl);
1198 MODSSL_CFG_ITEM_FREE(SSL_CTX_free, mctx->ssl_ctx);
1201 static void ssl_init_ctx_cleanup_proxy(modssl_ctx_t *mctx)
1203 ssl_init_ctx_cleanup(mctx);
1205 if (mctx->pkp->certs) {
1206 sk_X509_INFO_pop_free(mctx->pkp->certs, X509_INFO_free);
1210 static void ssl_init_ctx_cleanup_server(modssl_ctx_t *mctx)
1214 ssl_init_ctx_cleanup(mctx);
1216 for (i=0; i < SSL_AIDX_MAX; i++) {
1217 MODSSL_CFG_ITEM_FREE(X509_free,
1218 mctx->pks->certs[i]);
1220 MODSSL_CFG_ITEM_FREE(EVP_PKEY_free,
1221 mctx->pks->keys[i]);
1225 apr_status_t ssl_init_ModuleKill(void *data)
1227 SSLSrvConfigRec *sc;
1228 server_rec *base_server = (server_rec *)data;
1232 * Drop the session cache and mutex
1234 ssl_scache_kill(base_server);
1237 * Destroy the temporary keys and params
1239 ssl_tmp_keys_free(base_server);
1242 * Free the non-pool allocated structures
1243 * in the per-server configurations
1245 for (s = base_server; s; s = s->next) {
1246 sc = mySrvConfig(s);
1248 ssl_init_ctx_cleanup_proxy(sc->proxy);
1250 ssl_init_ctx_cleanup_server(sc->server);
1254 * Try to kill the internals of the SSL library.
1257 ERR_remove_state(0);