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
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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
48 * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
49 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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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 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) {
227 /* Fix up stuff that may not have been set */
228 if (sc->bEnabled == UNSET) {
229 sc->bEnabled = FALSE;
232 if (sc->nSessionCacheTimeout == UNSET) {
233 sc->nSessionCacheTimeout = SSL_SESSION_CACHE_TIMEOUT;
236 if (sc->nPassPhraseDialogType == SSL_PPTYPE_UNSET) {
237 sc->nPassPhraseDialogType = SSL_PPTYPE_BUILTIN;
240 /* Open the dedicated SSL logfile */
241 ssl_log_open(base_server, s, p);
244 ssl_init_SSLLibrary(base_server);
247 ssl_util_thread_setup(base_server, p);
251 * Seed the Pseudo Random Number Generator (PRNG)
252 * only need ptemp here; nothing inside allocated from the pool
253 * needs to live once we return from ssl_rand_seed().
255 ssl_rand_seed(base_server, ptemp, SSL_RSCTX_STARTUP, "Init: ");
258 * read server private keys/public certs into memory.
259 * decrypting any encrypted keys via configured SSLPassPhraseDialogs
260 * anything that needs to live longer than ptemp needs to also survive
261 * restarts, in which case they'll live inside s->process->pool.
263 ssl_pphrase_Handle(base_server, ptemp);
265 ssl_tmp_keys_init(base_server);
268 * SSL external crypto device ("engine") support
270 #ifdef SSL_EXPERIMENTAL_ENGINE
271 ssl_init_Engine(base_server, p);
275 * initialize the mutex handling
277 if (!ssl_mutex_init(base_server, p)) {
278 return HTTP_INTERNAL_SERVER_ERROR;
282 * initialize session caching
284 ssl_scache_init(base_server, p);
289 ssl_log(base_server, SSL_LOG_INFO,
290 "Init: Initializing (virtual) servers for SSL");
292 for (s = base_server; s; s = s->next) {
295 * Either now skip this server when SSL is disabled for
296 * it or give out some information about what we're
303 ssl_log(s, SSL_LOG_INFO,
304 "Init: Configuring server %s for SSL protocol",
305 ssl_util_vhostid(p, s));
308 * Read the server certificate and key
310 ssl_init_ConfigureServer(s, p, ptemp, sc);
314 * Configuration consistency checks
316 ssl_init_CheckServers(base_server, ptemp);
319 * Announce mod_ssl and SSL library in HTTP Server field
320 * as ``mod_ssl/X.X.X OpenSSL/X.X.X''
322 ssl_add_version_components(p, base_server);
324 SSL_init_app_data2_idx(); /* for SSL_get_app_data2() at request time */
330 * Support for external a Crypto Device ("engine"), usually
331 * a hardware accellerator card for crypto operations.
333 #ifdef SSL_EXPERIMENTAL_ENGINE
334 void ssl_init_Engine(server_rec *s, apr_pool_t *p)
336 SSLModConfigRec *mc = myModConfig(s);
339 if (mc->szCryptoDevice) {
340 if (!(e = ENGINE_by_id(mc->szCryptoDevice))) {
341 ssl_log(s, SSL_LOG_ERROR,
342 "Init: Failed to load Crypto Device API `%s'",
347 if (strEQ(mc->szCryptoDevice, "chil")) {
348 ENGINE_ctrl(e, ENGINE_CTRL_CHIL_SET_FORKCHECK, 1, 0, 0);
351 if (!ENGINE_set_default(e, ENGINE_METHOD_ALL)) {
352 ssl_log(s, SSL_LOG_ERROR,
353 "Init: Failed to enable Crypto Device API `%s'",
363 static SSL_CTX *ssl_init_ctx(server_rec *s,
369 const char *vhost_id = sc->szVHostID;
371 int protocol = sc->nProtocol;
374 * Create the new per-server SSL context
376 if (protocol == SSL_PROTOCOL_NONE) {
377 ssl_log(s, SSL_LOG_ERROR,
378 "Init: (%s) No SSL protocols available [hint: SSLProtocol]",
384 (protocol & SSL_PROTOCOL_SSLV2 ? "SSLv2, " : ""),
385 (protocol & SSL_PROTOCOL_SSLV3 ? "SSLv3, " : ""),
386 (protocol & SSL_PROTOCOL_TLSV1 ? "TLSv1, " : ""),
388 cp[strlen(cp)-2] = NUL;
390 ssl_log(s, SSL_LOG_TRACE,
391 "Init: (%s) Creating new SSL context (protocols: %s)",
394 if (protocol == SSL_PROTOCOL_SSLV2) {
395 ctx = SSL_CTX_new(SSLv2_server_method()); /* only SSLv2 is left */
398 ctx = SSL_CTX_new(SSLv23_server_method()); /* be more flexible */
403 SSL_CTX_set_options(ctx, SSL_OP_ALL);
405 if (!(protocol & SSL_PROTOCOL_SSLV2)) {
406 SSL_CTX_set_options(ctx, SSL_OP_NO_SSLv2);
409 if (!(protocol & SSL_PROTOCOL_SSLV3)) {
410 SSL_CTX_set_options(ctx, SSL_OP_NO_SSLv3);
413 if (!(protocol & SSL_PROTOCOL_TLSV1)) {
414 SSL_CTX_set_options(ctx, SSL_OP_NO_TLSv1);
417 SSL_CTX_set_app_data(ctx, s);
420 * Configure additional context ingredients
422 SSL_CTX_set_options(ctx, SSL_OP_SINGLE_DH_USE);
427 static void ssl_init_session_cache_ctx(server_rec *s,
432 SSL_CTX *ctx = sc->pSSLCtx;
433 SSLModConfigRec *mc = myModConfig(s);
434 long cache_mode = SSL_SESS_CACHE_OFF;
436 if (mc->nSessionCacheMode != SSL_SCMODE_NONE) {
437 /* SSL_SESS_CACHE_NO_INTERNAL_LOOKUP will force OpenSSL
438 * to ignore process local-caching and
439 * to always get/set/delete sessions using mod_ssl's callbacks.
441 cache_mode = SSL_SESS_CACHE_SERVER|SSL_SESS_CACHE_NO_INTERNAL_LOOKUP;
444 SSL_CTX_set_session_cache_mode(ctx, cache_mode);
446 SSL_CTX_sess_set_new_cb(ctx, ssl_callback_NewSessionCacheEntry);
447 SSL_CTX_sess_set_get_cb(ctx, ssl_callback_GetSessionCacheEntry);
448 SSL_CTX_sess_set_remove_cb(ctx, ssl_callback_DelSessionCacheEntry);
451 static void ssl_init_verify(server_rec *s,
456 SSL_CTX *ctx = sc->pSSLCtx;
457 const char *vhost_id = sc->szVHostID;
459 int verify = SSL_VERIFY_NONE;
460 STACK_OF(X509_NAME) *ca_list;
462 if (sc->nVerifyClient == SSL_CVERIFY_UNSET) {
463 sc->nVerifyClient = SSL_CVERIFY_NONE;
466 if (sc->nVerifyDepth == UNSET) {
467 sc->nVerifyDepth = 1;
471 * Configure callbacks for SSL context
473 if (sc->nVerifyClient == SSL_CVERIFY_REQUIRE) {
474 verify |= SSL_VERIFY_PEER_STRICT;
477 if ((sc->nVerifyClient == SSL_CVERIFY_OPTIONAL) ||
478 (sc->nVerifyClient == SSL_CVERIFY_OPTIONAL_NO_CA))
480 verify |= SSL_VERIFY_PEER;
483 SSL_CTX_set_verify(ctx, verify, ssl_callback_SSLVerify);
486 * Configure Client Authentication details
488 if (sc->szCACertificateFile || sc->szCACertificatePath) {
489 ssl_log(s, SSL_LOG_TRACE,
490 "Init: (%s) Configuring client authentication", vhost_id);
492 if (!SSL_CTX_load_verify_locations(ctx,
493 sc->szCACertificateFile,
494 sc->szCACertificatePath))
496 ssl_log(s, SSL_LOG_ERROR|SSL_ADD_SSLERR,
497 "Init: (%s) Unable to configure verify locations "
498 "for client authentication", vhost_id);
502 ca_list = ssl_init_FindCAList(s, ptemp,
503 sc->szCACertificateFile,
504 sc->szCACertificatePath);
506 ssl_log(s, SSL_LOG_ERROR,
507 "Init: (%s) Unable to determine list of available "
508 "CA certificates for client authentication",
513 SSL_CTX_set_client_CA_list(ctx, (STACK *)ca_list);
517 * Give a warning when no CAs were configured but client authentication
518 * should take place. This cannot work.
520 if (sc->nVerifyClient == SSL_CVERIFY_REQUIRE) {
521 ca_list = (STACK_OF(X509_NAME) *)SSL_CTX_get_client_CA_list(ctx);
523 if (sk_X509_NAME_num(ca_list) == 0) {
524 ssl_log(s, SSL_LOG_WARN,
525 "Init: Oops, you want to request client authentication, "
526 "but no CAs are known for verification!? "
527 "[Hint: SSLCACertificate*]");
532 static void ssl_init_cipher_suite(server_rec *s,
537 SSL_CTX *ctx = sc->pSSLCtx;
538 const char *vhost_id = sc->szVHostID;
539 const char *suite = sc->szCipherSuite;
542 * Configure SSL Cipher Suite
548 ssl_log(s, SSL_LOG_TRACE,
549 "Init: (%s) Configuring permitted SSL ciphers [%s]",
552 if (!SSL_CTX_set_cipher_list(ctx, suite)) {
553 ssl_log(s, SSL_LOG_ERROR|SSL_ADD_SSLERR,
554 "Init: (%s) Unable to configure permitted SSL ciphers",
561 * Configure a particular server
563 void ssl_init_ConfigureServer(server_rec *s,
568 SSLModConfigRec *mc = myModConfig(s);
570 const char *vhost_id, *rsa_id, *dsa_id;
580 * Create the server host:port string because we need it a lot
582 sc->szVHostID = vhost_id = ssl_util_vhostid(p, s);
583 sc->nVHostID_length = strlen(sc->szVHostID);
586 * Now check for important parameters and the
587 * possibility that the user forgot to set them.
589 if (!sc->szPublicCertFiles[0]) {
590 ssl_log(s, SSL_LOG_ERROR,
591 "Init: (%s) No SSL Certificate set [hint: SSLCertificateFile]",
597 * Check for problematic re-initializations
599 if (sc->pPublicCert[SSL_AIDX_RSA] ||
600 sc->pPublicCert[SSL_AIDX_DSA])
602 ssl_log(s, SSL_LOG_ERROR,
603 "Init: (%s) Illegal attempt to re-initialise SSL for server "
604 "(theoretically shouldn't happen!)", vhost_id);
608 ctx = ssl_init_ctx(s, p, ptemp, sc);
610 ssl_init_session_cache_ctx(s, p, ptemp, sc);
612 ssl_init_verify(s, p, ptemp, sc);
614 ssl_init_cipher_suite(s, p, ptemp, sc);
616 SSL_CTX_set_tmp_rsa_callback(ctx, ssl_callback_TmpRSA);
617 SSL_CTX_set_tmp_dh_callback(ctx, ssl_callback_TmpDH);
619 if (sc->nLogLevel >= SSL_LOG_INFO) {
620 /* this callback only logs if SSLLogLevel >= info */
621 SSL_CTX_set_info_callback(ctx, ssl_callback_LogTracingState);
625 * Configure Certificate Revocation List (CRL) Details
627 if (sc->szCARevocationFile || sc->szCARevocationPath) {
628 ssl_log(s, SSL_LOG_TRACE,
629 "Init: (%s) Configuring certificate revocation facility",
632 sc->pRevocationStore =
633 SSL_X509_STORE_create((char *)sc->szCARevocationFile,
634 (char *)sc->szCARevocationPath);
636 if (!sc->pRevocationStore) {
637 ssl_log(s, SSL_LOG_ERROR|SSL_ADD_SSLERR,
638 "Init: (%s) Unable to configure X.509 CRL storage "
639 "for certificate revocation",
646 * Configure server certificate(s)
648 rsa_id = ssl_asn1_table_keyfmt(ptemp, vhost_id, SSL_AIDX_RSA);
649 dsa_id = ssl_asn1_table_keyfmt(ptemp, vhost_id, SSL_AIDX_DSA);
651 if ((asn1 = ssl_asn1_table_get(mc->tPublicCert, rsa_id))) {
652 ssl_log(s, SSL_LOG_TRACE,
653 "Init: (%s) Configuring RSA server certificate",
657 if (!(sc->pPublicCert[SSL_AIDX_RSA] =
658 d2i_X509(NULL, &ptr, asn1->nData)))
660 ssl_log(s, SSL_LOG_ERROR|SSL_ADD_SSLERR,
661 "Init: (%s) Unable to import RSA server certificate",
666 if (SSL_CTX_use_certificate(ctx, sc->pPublicCert[SSL_AIDX_RSA]) <= 0) {
667 ssl_log(s, SSL_LOG_ERROR|SSL_ADD_SSLERR,
668 "Init: (%s) Unable to configure RSA server certificate",
676 if ((asn1 = ssl_asn1_table_get(mc->tPublicCert, dsa_id))) {
677 ssl_log(s, SSL_LOG_TRACE,
678 "Init: (%s) Configuring DSA server certificate",
682 if (!(sc->pPublicCert[SSL_AIDX_DSA] =
683 d2i_X509(NULL, &ptr, asn1->nData)))
685 ssl_log(s, SSL_LOG_ERROR|SSL_ADD_SSLERR,
686 "Init: (%s) Unable to import DSA server certificate",
691 if (SSL_CTX_use_certificate(ctx, sc->pPublicCert[SSL_AIDX_DSA]) <= 0) {
692 ssl_log(s, SSL_LOG_ERROR|SSL_ADD_SSLERR,
693 "Init: (%s) Unable to configure DSA server certificate",
702 ssl_log(s, SSL_LOG_ERROR,
703 "Init: (%s) Oops, no RSA or DSA server certificate found?!",
705 ssl_log(s, SSL_LOG_ERROR,
706 "Init: (%s) You have to perform a *full* server restart "
707 "when you added or removed a certificate and/or key file",
713 * Some information about the certificate(s)
715 for (i = 0; i < SSL_AIDX_MAX; i++) {
716 if (sc->pPublicCert[i]) {
717 if (SSL_X509_isSGC(sc->pPublicCert[i])) {
718 ssl_log(s, SSL_LOG_INFO,
719 "Init: (%s) %s server certificate enables "
720 "Server Gated Cryptography (SGC)",
721 vhost_id, ssl_asn1_keystr(i));
724 if (SSL_X509_getBC(sc->pPublicCert[i], &is_ca, &pathlen)) {
726 ssl_log(s, SSL_LOG_WARN,
727 "Init: (%s) %s server certificate "
728 "is a CA certificate "
729 "(BasicConstraints: CA == TRUE !?)",
730 vhost_id, ssl_asn1_keystr(i));
734 ssl_log(s, SSL_LOG_WARN,
735 "Init: (%s) %s server certificate "
736 "is not a leaf certificate "
737 "(BasicConstraints: pathlen == %d > 0 !?)",
738 vhost_id, ssl_asn1_keystr(i), pathlen);
742 if (SSL_X509_getCN(p, sc->pPublicCert[i], &cp)) {
743 int fnm_flags = FNM_PERIOD|FNM_CASE_BLIND;
745 if (apr_is_fnmatch(cp) &&
746 (apr_fnmatch(cp, s->server_hostname,
747 fnm_flags) == FNM_NOMATCH))
749 ssl_log(s, SSL_LOG_WARN,
750 "Init: (%s) %s server certificate "
751 "wildcard CommonName (CN) `%s' "
752 "does NOT match server name!?",
753 vhost_id, ssl_asn1_keystr(i), cp);
755 else if (strNE(s->server_hostname, cp)) {
756 ssl_log(s, SSL_LOG_WARN,
757 "Init: (%s) %s server certificate "
758 "CommonName (CN) `%s' "
759 "does NOT match server name!?",
760 vhost_id, ssl_asn1_keystr(i), cp);
767 * Configure server private key(s)
771 if ((asn1 = ssl_asn1_table_get(mc->tPrivateKey, rsa_id))) {
772 ssl_log(s, SSL_LOG_TRACE,
773 "Init: (%s) Configuring RSA server private key",
777 if (!(sc->pPrivateKey[SSL_AIDX_RSA] =
778 d2i_PrivateKey(EVP_PKEY_RSA, NULL, &ptr, asn1->nData)))
780 ssl_log(s, SSL_LOG_ERROR|SSL_ADD_SSLERR,
781 "Init: (%s) Unable to import RSA server private key",
786 if (SSL_CTX_use_PrivateKey(ctx, sc->pPrivateKey[SSL_AIDX_RSA]) <= 0) {
787 ssl_log(s, SSL_LOG_ERROR|SSL_ADD_SSLERR,
788 "Init: (%s) Unable to configure RSA server private key",
796 if ((asn1 = ssl_asn1_table_get(mc->tPrivateKey, dsa_id))) {
797 ssl_log(s, SSL_LOG_TRACE,
798 "Init: (%s) Configuring DSA server private key",
802 if (!(sc->pPrivateKey[SSL_AIDX_DSA] =
803 d2i_PrivateKey(EVP_PKEY_DSA, NULL, &ptr, asn1->nData)))
805 ssl_log(s, SSL_LOG_ERROR|SSL_ADD_SSLERR,
806 "Init: (%s) Unable to import DSA server private key",
811 if (SSL_CTX_use_PrivateKey(ctx, sc->pPrivateKey[SSL_AIDX_DSA]) <= 0) {
812 ssl_log(s, SSL_LOG_ERROR|SSL_ADD_SSLERR,
813 "Init: (%s) Unable to configure DSA server private key",
822 ssl_log(s, SSL_LOG_ERROR,
823 "Init: (%s) Oops, no RSA or DSA server private key found?!",
829 * Optionally copy DSA parameters for certificate from private key
830 * (see http://www.psy.uq.edu.au/~ftp/Crypto/ssleay/TODO.html)
832 if (sc->pPublicCert[SSL_AIDX_DSA] &&
833 sc->pPrivateKey[SSL_AIDX_DSA])
835 pkey = X509_get_pubkey(sc->pPublicCert[SSL_AIDX_DSA]);
837 if (pkey && (EVP_PKEY_key_type(pkey) == EVP_PKEY_DSA) &&
838 EVP_PKEY_missing_parameters(pkey))
840 EVP_PKEY_copy_parameters(pkey,
841 sc->pPrivateKey[SSL_AIDX_DSA]);
846 * Optionally configure extra server certificate chain certificates.
847 * This is usually done by OpenSSL automatically when one of the
848 * server cert issuers are found under SSLCACertificatePath or in
849 * SSLCACertificateFile. But because these are intended for client
850 * authentication it can conflict. For instance when you use a
851 * Global ID server certificate you've to send out the intermediate
852 * CA certificate, too. When you would just configure this with
853 * SSLCACertificateFile and also use client authentication mod_ssl
854 * would accept all clients also issued by this CA. Obviously this
855 * isn't what we want in this situation. So this feature here exists
856 * to allow one to explicity configure CA certificates which are
857 * used only for the server certificate chain.
859 if (sc->szCertificateChain) {
860 BOOL skip_first = FALSE;
862 for (i = 0; (i < SSL_AIDX_MAX) && sc->szPublicCertFiles[i]; i++) {
863 if (strEQ(sc->szPublicCertFiles[i], sc->szCertificateChain)) {
869 n = SSL_CTX_use_certificate_chain(ctx,
870 (char *)sc->szCertificateChain,
873 ssl_log(s, SSL_LOG_ERROR,
874 "Init: (%s) Failed to configure CA certificate chain!",
879 ssl_log(s, SSL_LOG_TRACE,
880 "Init: (%s) Configuring server certificate chain "
881 "(%d CA certificate%s)",
882 vhost_id, n, n == 1 ? "" : "s");
886 void ssl_init_CheckServers(server_rec *base_server, apr_pool_t *p)
894 BOOL conflict = FALSE;
897 * Give out warnings when a server has HTTPS configured
898 * for the HTTP port or vice versa
900 for (s = base_server; s; s = s->next) {
903 if (sc->bEnabled && (s->port == DEFAULT_HTTP_PORT)) {
904 ssl_log(base_server, SSL_LOG_WARN,
905 "Init: (%s) You configured HTTPS(%d) "
906 "on the standard HTTP(%d) port!",
907 ssl_util_vhostid(p, s),
908 DEFAULT_HTTPS_PORT, DEFAULT_HTTP_PORT);
911 if (!sc->bEnabled && (s->port == DEFAULT_HTTPS_PORT)) {
912 ssl_log(base_server, SSL_LOG_WARN,
913 "Init: (%s) You configured HTTP(%d) "
914 "on the standard HTTPS(%d) port!",
915 ssl_util_vhostid(p, s),
916 DEFAULT_HTTP_PORT, DEFAULT_HTTPS_PORT);
921 * Give out warnings when more than one SSL-aware virtual server uses the
922 * same IP:port. This doesn't work because mod_ssl then will always use
923 * just the certificate/keys of one virtual host (which one cannot be said
924 * easily - but that doesn't matter here).
926 table = apr_hash_make(p);
928 for (s = base_server; s; s = s->next) {
935 key = apr_psprintf(p, "%pA:%u",
936 &s->addrs->host_addr, s->addrs->host_port);
939 if ((ps = (server_rec *)apr_hash_get(table, key, klen))) {
940 ssl_log(base_server, SSL_LOG_WARN,
941 "Init: SSL server IP/port conflict: "
942 "%s (%s:%d) vs. %s (%s:%d)",
943 ssl_util_vhostid(p, s),
944 (s->defn_name ? s->defn_name : "unknown"),
946 ssl_util_vhostid(p, ps),
947 (ps->defn_name ? ps->defn_name : "unknown"),
948 ps->defn_line_number);
953 apr_hash_set(table, key, klen, s);
957 ssl_log(base_server, SSL_LOG_WARN,
958 "Init: You should not use name-based "
959 "virtual hosts in conjunction with SSL!!");
963 static int ssl_init_FindCAList_X509NameCmp(X509_NAME **a, X509_NAME **b)
965 return(X509_NAME_cmp(*a, *b));
968 static void ssl_init_PushCAList(STACK_OF(X509_NAME) *ca_list,
969 server_rec *s, const char *file)
972 STACK_OF(X509_NAME) *sk;
974 sk = (STACK_OF(X509_NAME) *)SSL_load_client_CA_file(file);
980 for (n = 0; n < sk_X509_NAME_num(sk); n++) {
982 X509_NAME *name = sk_X509_NAME_value(sk, n);
984 ssl_log(s, SSL_LOG_TRACE,
985 "CA certificate: %s",
986 X509_NAME_oneline(name, name_buf, sizeof(name_buf)));
989 * note that SSL_load_client_CA_file() checks for duplicates,
990 * but since we call it multiple times when reading a directory
991 * we must also check for duplicates ourselves.
994 if (sk_X509_NAME_find(ca_list, name) < 0) {
995 /* this will be freed when ca_list is */
996 sk_X509_NAME_push(ca_list, name);
999 /* need to free this ourselves, else it will leak */
1000 X509_NAME_free(name);
1004 sk_X509_NAME_free(sk);
1007 STACK_OF(X509_NAME) *ssl_init_FindCAList(server_rec *s,
1009 const char *ca_file,
1010 const char *ca_path)
1012 STACK_OF(X509_NAME) *ca_list;
1015 * Start with a empty stack/list where new
1016 * entries get added in sorted order.
1018 ca_list = sk_X509_NAME_new(ssl_init_FindCAList_X509NameCmp);
1021 * Process CA certificate bundle file
1024 ssl_init_PushCAList(ca_list, s, ca_file);
1028 * Process CA certificate path files
1032 apr_finfo_t direntry;
1033 apr_int32_t finfo_flags = APR_FINFO_MIN|APR_FINFO_NAME;
1035 if (apr_dir_open(&dir, ca_path, ptemp) != APR_SUCCESS) {
1036 ssl_log(s, SSL_LOG_ERROR|SSL_ADD_ERRNO,
1037 "Init: Failed to open SSLCACertificatePath `%s'",
1042 while ((apr_dir_read(&direntry, finfo_flags, dir)) == APR_SUCCESS) {
1044 if (direntry.filetype == APR_DIR) {
1045 continue; /* don't try to load directories */
1047 file = apr_pstrcat(ptemp, ca_path, "/", direntry.name, NULL);
1048 ssl_init_PushCAList(ca_list, s, file);
1057 sk_X509_NAME_set_cmp_func(ca_list, NULL);
1062 void ssl_init_Child(apr_pool_t *p, server_rec *s)
1064 SSLModConfigRec *mc = myModConfig(s);
1065 mc->pid = getpid(); /* only call getpid() once per-process */
1067 /* XXX: there should be an ap_srand() function */
1068 srand((unsigned int)time(NULL));
1070 /* open the mutex lockfile */
1071 ssl_mutex_reinit(s, p);
1074 #define MODSSL_CFG_ITEM_FREE(func, item) \
1080 apr_status_t ssl_init_ModuleKill(void *data)
1082 SSLSrvConfigRec *sc;
1083 server_rec *base_server = (server_rec *)data;
1087 * Drop the session cache and mutex
1089 ssl_scache_kill(base_server);
1092 * Destroy the temporary keys and params
1094 ssl_tmp_keys_free(base_server);
1097 * Free the non-pool allocated structures
1098 * in the per-server configurations
1100 for (s = base_server; s; s = s->next) {
1102 sc = mySrvConfig(s);
1104 for (i=0; i < SSL_AIDX_MAX; i++) {
1105 MODSSL_CFG_ITEM_FREE(X509_free,
1106 sc->pPublicCert[i]);
1108 MODSSL_CFG_ITEM_FREE(EVP_PKEY_free,
1109 sc->pPrivateKey[i]);
1112 MODSSL_CFG_ITEM_FREE(X509_STORE_free,
1113 sc->pRevocationStore);
1115 MODSSL_CFG_ITEM_FREE(SSL_CTX_free,
1120 * Try to kill the internals of the SSL library.
1123 ERR_remove_state(0);