1 /* Licensed to the Apache Software Foundation (ASF) under one or more
2 * contributor license agreements. See the NOTICE file distributed with
3 * this work for additional information regarding copyright ownership.
4 * The ASF licenses this file to You under the Apache License, Version 2.0
5 * (the "License"); you may not use this file except in compliance with
6 * the License. You may obtain a copy of the License at
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
22 * @brief Internal interfaces private to mod_ssl.
24 * @defgroup MOD_SSL_PRIVATE Private
31 #include "http_config.h"
32 #include "http_core.h"
34 #include "http_main.h"
35 #include "http_connection.h"
36 #include "http_request.h"
37 #include "http_protocol.h"
38 #include "http_vhost.h"
39 #include "util_script.h"
40 #include "util_filter.h"
41 #include "util_ebcdic.h"
42 #include "util_mutex.h"
44 #include "apr_strings.h"
45 #define APR_WANT_STRFUNC
46 #define APR_WANT_MEMFUNC
48 #include "apr_tables.h"
50 #include "apr_fnmatch.h"
51 #include "apr_strings.h"
52 #include "apr_global_mutex.h"
53 #include "apr_optional.h"
54 #include "ap_socache.h"
57 /* The #ifdef macros are only defined AFTER including the above
58 * therefore we cannot include these system files at the top :-(
63 #if APR_HAVE_SYS_TIME_H
67 #include <unistd.h> /* needed for STDIN_FILENO et.al., at least on FreeBSD */
79 #define BOOL unsigned int
85 #include <openssl/opensslv.h>
86 #if (OPENSSL_VERSION_NUMBER >= 0x10001000)
87 /* must be defined before including ssl.h */
88 #define OPENSSL_NO_SSL_INTERN
90 #include <openssl/ssl.h>
91 #include <openssl/err.h>
92 #include <openssl/x509.h>
93 #include <openssl/pem.h>
94 #include <openssl/crypto.h>
95 #include <openssl/evp.h>
96 #include <openssl/rand.h>
97 #include <openssl/x509v3.h>
98 #include <openssl/x509_vfy.h>
99 #include <openssl/ocsp.h>
101 /* Avoid tripping over an engine build installed globally and detected
102 * when the user points at an explicit non-engine flavor of OpenSSL
104 #if defined(HAVE_OPENSSL_ENGINE_H) && defined(HAVE_ENGINE_INIT)
105 #include <openssl/engine.h>
108 #if (OPENSSL_VERSION_NUMBER < 0x0090801f)
109 #error mod_ssl requires OpenSSL 0.9.8a or later
113 * ...shifting sands of OpenSSL...
114 * Note: when adding support for new OpenSSL features, avoid explicit
115 * version number checks whenever possible, and use "feature-based"
116 * detection instead (check for definitions of constants or functions)
118 #if (OPENSSL_VERSION_NUMBER >= 0x10000000)
119 #define MODSSL_SSL_CIPHER_CONST const
120 #define MODSSL_SSL_METHOD_CONST const
122 #define MODSSL_SSL_CIPHER_CONST
123 #define MODSSL_SSL_METHOD_CONST
126 #if defined(OPENSSL_FIPS)
130 #if defined(SSL_OP_NO_TLSv1_2)
134 #if defined(SSL_CONF_FLAG_FILE)
135 #define HAVE_SSL_CONF_CMD
139 * The following features all depend on TLS extension support.
140 * Within this block, check again for features (not version numbers).
142 #if !defined(OPENSSL_NO_TLSEXT) && defined(SSL_set_tlsext_host_name)
146 /* ECC: make sure we have at least 1.0.0 */
147 #if !defined(OPENSSL_NO_EC) && defined(TLSEXT_ECPOINTFORMAT_uncompressed)
152 #if !defined(OPENSSL_NO_OCSP) && defined(SSL_CTX_set_tlsext_status_cb)
153 #define HAVE_OCSP_STAPLING
154 #if OPENSSL_VERSION_NUMBER < 0x10100000L
155 /* backward compatibility with OpenSSL < 1.0 */
156 #ifndef sk_OPENSSL_STRING_num
157 #define sk_OPENSSL_STRING_num sk_num
159 #ifndef sk_OPENSSL_STRING_value
160 #define sk_OPENSSL_STRING_value sk_value
162 #ifndef sk_OPENSSL_STRING_pop
163 #define sk_OPENSSL_STRING_pop sk_pop
165 #endif /* if OPENSSL_VERSION_NUMBER < 0x10100000L */
166 #endif /* if !defined(OPENSSL_NO_OCSP) && defined(SSL_CTX_set_tlsext_status_cb) */
168 /* TLS session tickets */
169 #if defined(SSL_CTX_set_tlsext_ticket_key_cb)
170 #define HAVE_TLS_SESSION_TICKETS
171 #define TLSEXT_TICKET_KEY_LEN 48
172 #ifndef tlsext_tick_md
173 #ifdef OPENSSL_NO_SHA256
174 #define tlsext_tick_md EVP_sha1
176 #define tlsext_tick_md EVP_sha256
181 /* Secure Remote Password */
182 #if !defined(OPENSSL_NO_SRP) && defined(SSL_CTRL_SET_TLS_EXT_SRP_USERNAME_CB)
184 #include <openssl/srp.h>
187 /* ALPN Protocol Negotiation */
188 #if defined(TLSEXT_TYPE_application_layer_protocol_negotiation)
189 #define HAVE_TLS_ALPN
192 #endif /* !defined(OPENSSL_NO_TLSEXT) && defined(SSL_set_tlsext_host_name) */
194 /* mod_ssl headers */
195 #include "ssl_util_ssl.h"
197 APLOG_USE_MODULE(ssl);
200 * Provide reasonable default for some defines
203 #define PFALSE ((void *)FALSE)
206 #define PTRUE ((void *)TRUE)
216 #define RAND_MAX INT_MAX
220 * Provide reasonable defines for some types
223 #define UCHAR unsigned char
227 * Provide useful shorthands
229 #define strEQ(s1,s2) (strcmp(s1,s2) == 0)
230 #define strNE(s1,s2) (strcmp(s1,s2) != 0)
231 #define strEQn(s1,s2,n) (strncmp(s1,s2,n) == 0)
232 #define strNEn(s1,s2,n) (strncmp(s1,s2,n) != 0)
234 #define strcEQ(s1,s2) (strcasecmp(s1,s2) == 0)
235 #define strcNE(s1,s2) (strcasecmp(s1,s2) != 0)
236 #define strcEQn(s1,s2,n) (strncasecmp(s1,s2,n) == 0)
237 #define strcNEn(s1,s2,n) (strncasecmp(s1,s2,n) != 0)
239 #define strIsEmpty(s) (s == NULL || s[0] == NUL)
241 #define myConnConfig(c) \
242 (SSLConnRec *)ap_get_module_config(c->conn_config, &ssl_module)
243 #define myCtxConfig(sslconn, sc) (sslconn->is_proxy ? sc->proxy : sc->server)
244 #define myConnConfigSet(c, val) \
245 ap_set_module_config(c->conn_config, &ssl_module, val)
246 #define mySrvConfig(srv) (SSLSrvConfigRec *)ap_get_module_config(srv->module_config, &ssl_module)
247 #define myDirConfig(req) (SSLDirConfigRec *)ap_get_module_config(req->per_dir_config, &ssl_module)
248 #define myModConfig(srv) (mySrvConfig((srv)))->mc
249 #define mySrvFromConn(c) (myConnConfig(c))->server
250 #define mySrvConfigFromConn(c) mySrvConfig(mySrvFromConn(c))
251 #define myModConfigFromConn(c) myModConfig(mySrvFromConn(c))
254 * Defaults for the configuration
256 #ifndef SSL_SESSION_CACHE_TIMEOUT
257 #define SSL_SESSION_CACHE_TIMEOUT 300
260 /* Default setting for per-dir reneg buffer. */
261 #ifndef DEFAULT_RENEG_BUFFER_SIZE
262 #define DEFAULT_RENEG_BUFFER_SIZE (128 * 1024)
265 /* Default for OCSP response validity */
266 #ifndef DEFAULT_OCSP_MAX_SKEW
267 #define DEFAULT_OCSP_MAX_SKEW (60 * 5)
270 /* Default timeout for OCSP queries */
271 #ifndef DEFAULT_OCSP_TIMEOUT
272 #define DEFAULT_OCSP_TIMEOUT 10
276 * Define the SSL options
278 #define SSL_OPT_NONE (0)
279 #define SSL_OPT_RELSET (1<<0)
280 #define SSL_OPT_STDENVVARS (1<<1)
281 #define SSL_OPT_EXPORTCERTDATA (1<<3)
282 #define SSL_OPT_FAKEBASICAUTH (1<<4)
283 #define SSL_OPT_STRICTREQUIRE (1<<5)
284 #define SSL_OPT_OPTRENEGOTIATE (1<<6)
285 #define SSL_OPT_LEGACYDNFORMAT (1<<7)
286 typedef int ssl_opt_t;
289 * Define the SSL Protocol options
291 #define SSL_PROTOCOL_NONE (0)
292 #ifndef OPENSSL_NO_SSL3
293 #define SSL_PROTOCOL_SSLV3 (1<<1)
295 #define SSL_PROTOCOL_TLSV1 (1<<2)
296 #ifndef OPENSSL_NO_SSL3
297 #define SSL_PROTOCOL_BASIC (SSL_PROTOCOL_SSLV3|SSL_PROTOCOL_TLSV1)
299 #define SSL_PROTOCOL_BASIC (SSL_PROTOCOL_TLSV1)
302 #define SSL_PROTOCOL_TLSV1_1 (1<<3)
303 #define SSL_PROTOCOL_TLSV1_2 (1<<4)
304 #define SSL_PROTOCOL_ALL (SSL_PROTOCOL_BASIC| \
305 SSL_PROTOCOL_TLSV1_1|SSL_PROTOCOL_TLSV1_2)
307 #define SSL_PROTOCOL_ALL (SSL_PROTOCOL_BASIC)
309 #ifndef OPENSSL_NO_SSL3
310 #define SSL_PROTOCOL_DEFAULT (SSL_PROTOCOL_ALL & ~SSL_PROTOCOL_SSLV3)
312 #define SSL_PROTOCOL_DEFAULT (SSL_PROTOCOL_ALL)
314 typedef int ssl_proto_t;
317 * Define the SSL verify levels
320 SSL_CVERIFY_UNSET = UNSET,
321 SSL_CVERIFY_NONE = 0,
322 SSL_CVERIFY_OPTIONAL = 1,
323 SSL_CVERIFY_REQUIRE = 2,
324 SSL_CVERIFY_OPTIONAL_NO_CA = 3
327 #define SSL_VERIFY_PEER_STRICT \
328 (SSL_VERIFY_PEER|SSL_VERIFY_FAIL_IF_NO_PEER_CERT)
330 #define ssl_verify_error_is_optional(errnum) \
331 ((errnum == X509_V_ERR_DEPTH_ZERO_SELF_SIGNED_CERT) \
332 || (errnum == X509_V_ERR_SELF_SIGNED_CERT_IN_CHAIN) \
333 || (errnum == X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT_LOCALLY) \
334 || (errnum == X509_V_ERR_CERT_UNTRUSTED) \
335 || (errnum == X509_V_ERR_UNABLE_TO_VERIFY_LEAF_SIGNATURE))
341 SSL_CRLCHECK_UNSET = UNSET,
342 SSL_CRLCHECK_NONE = 0,
343 SSL_CRLCHECK_LEAF = 1,
344 SSL_CRLCHECK_CHAIN = 2
348 * Define the SSL pass phrase dialog types
351 SSL_PPTYPE_UNSET = UNSET,
352 SSL_PPTYPE_BUILTIN = 0,
353 SSL_PPTYPE_FILTER = 1,
358 * Define the Path Checking modes
360 #define SSL_PCM_EXISTS 1
361 #define SSL_PCM_ISREG 2
362 #define SSL_PCM_ISDIR 4
363 #define SSL_PCM_ISNONZERO 8
364 typedef unsigned int ssl_pathcheck_t;
367 * Define the SSL enabled state
370 SSL_ENABLED_UNSET = UNSET,
371 SSL_ENABLED_FALSE = 0,
372 SSL_ENABLED_TRUE = 1,
373 SSL_ENABLED_OPTIONAL = 3
377 * Define the SSL requirement structure
381 ap_expr_info_t *mpExpr;
385 * Define the SSL random number generator seeding source
388 SSL_RSCTX_STARTUP = 1,
389 SSL_RSCTX_CONNECT = 2
392 SSL_RSSRC_BUILTIN = 1,
405 * Define the structure of an ASN.1 anything
409 unsigned char *cpData;
410 apr_time_t source_mtime;
414 * Define the mod_ssl per-module configuration structure
415 * (i.e. the global configuration for each httpd process)
419 SSL_SHUTDOWN_TYPE_UNSET,
420 SSL_SHUTDOWN_TYPE_STANDARD,
421 SSL_SHUTDOWN_TYPE_UNCLEAN,
422 SSL_SHUTDOWN_TYPE_ACCURATE
423 } ssl_shutdown_type_e;
427 const char *client_dn;
429 ssl_shutdown_type_e shutdown_type;
430 const char *verify_info;
431 const char *verify_error;
436 NON_SSL_OK = 0, /* is SSL request, or error handling completed */
437 NON_SSL_SEND_REQLINE, /* Need to send the fake request line */
438 NON_SSL_SEND_HDR_SEP, /* Need to send the header separator */
439 NON_SSL_SET_ERROR_MSG /* Need to set the error message */
442 /* Track the handshake/renegotiation state for the connection so
443 * that all client-initiated renegotiations can be rejected, as a
444 * partial fix for CVE-2009-3555. */
446 RENEG_INIT = 0, /* Before initial handshake */
447 RENEG_REJECT, /* After initial handshake; any client-initiated
448 * renegotiation should be rejected */
449 RENEG_ALLOW, /* A server-initiated renegotiation is taking
450 * place (as dictated by configuration) */
451 #if OPENSSL_VERSION_NUMBER >= 0x10100000L
452 RENEG_STARTED, /* A renegotiation has started after RENEG_ALLOW */
453 RENEG_DONE, /* A renegotiation has finished after RENEG_STARTED */
454 RENEG_ALERT, /* A renegotiation has finished with an SSL Alert */
456 RENEG_ABORT /* Renegotiation initiated by client, abort the
462 const char *cipher_suite; /* cipher suite used in last reneg */
465 /* BIG FAT WARNING: SSLModConfigRec has unusual memory lifetime: it is
466 * allocated out of the "process" pool and only a single such
467 * structure is created and used for the lifetime of the process.
468 * (The process pool is s->process->pool and is stored in the .pPool
469 * field.) Most members of this structure are likewise allocated out
470 * of the process pool, but notably sesscache and sesscache_context
473 * The structure is treated as mostly immutable after a single config
474 * parse has completed; the post_config hook (ssl_init_Module) flips
475 * the bFixed flag to true and subsequent invocations of the config
476 * callbacks hence do nothing.
478 * This odd lifetime strategy is used so that encrypted private keys
479 * can be decrypted once at startup and continue to be used across
480 * subsequent server reloads where the interactive password prompt is
483 * It is really an ABI nightmare waiting to happen since DSOs are
484 * reloaded across restarts, and nothing prevents the struct type
485 * changing across such reloads, yet the cached structure will be
486 * assumed to match regardless.
488 * This should really be fixed using a smaller structure which only
489 * stores that which is absolutely necessary (the private keys, maybe
490 * the random seed), and have that structure be strictly ABI-versioned
498 /* OpenSSL SSL_SESS_CACHE_* flags: */
501 /* The configured provider, and associated private data
503 const ap_socache_provider_t *sesscache;
504 ap_socache_instance_t *sesscache_context;
506 apr_global_mutex_t *pMutex;
507 apr_array_header_t *aRandSeed;
508 apr_hash_t *tVHostKeys;
510 /* A hash table of pointers to ssl_asn1_t structures. The structures
511 * are used to store private keys in raw DER format (serialized OpenSSL
512 * PrivateKey structures). The table is indexed by (vhost-id,
513 * index), for example the string "vhost.example.com:443:0". */
514 apr_hash_t *tPrivateKey;
516 #if defined(HAVE_OPENSSL_ENGINE_H) && defined(HAVE_ENGINE_INIT)
517 const char *szCryptoDevice;
520 #ifdef HAVE_OCSP_STAPLING
521 const ap_socache_provider_t *stapling_cache;
522 ap_socache_instance_t *stapling_cache_context;
523 apr_global_mutex_t *stapling_cache_mutex;
524 apr_global_mutex_t *stapling_refresh_mutex;
528 /** Structure representing configured filenames for certs and keys for
531 /* Lists of configured certs and keys for this server */
532 apr_array_header_t *cert_files;
533 apr_array_header_t *key_files;
535 /** Certificates which specify the set of CA names which should be
536 * sent in the CertificateRequest message: */
537 const char *ca_name_path;
538 const char *ca_name_file;
539 } modssl_pk_server_t;
542 /** proxy can have any number of cert/key pairs */
543 const char *cert_file;
544 const char *cert_path;
545 const char *ca_cert_file;
546 STACK_OF(X509_INFO) *certs; /* Contains End Entity certs */
547 STACK_OF(X509) **ca_certs; /* Contains ONLY chain certs for
548 * each item in certs.
549 * (ptr to array of ptrs) */
552 /** stuff related to authentication that can also be per-dir */
554 /** known/trusted CAs */
555 const char *ca_cert_path;
556 const char *ca_cert_file;
558 const char *cipher_suite;
560 /** for client or downstream server authentication */
562 ssl_verify_t verify_mode;
565 #ifdef HAVE_TLS_SESSION_TICKETS
567 const char *file_path;
568 unsigned char key_name[16];
569 unsigned char hmac_secret[16];
570 unsigned char aes_key[16];
571 } modssl_ticket_key_t;
574 #ifdef HAVE_SSL_CONF_CMD
581 typedef struct SSLSrvConfigRec SSLSrvConfigRec;
584 SSLSrvConfigRec *sc; /** pointer back to server config */
587 /** we are one or the other */
588 modssl_pk_server_t *pks;
589 modssl_pk_proxy_t *pkp;
591 #ifdef HAVE_TLS_SESSION_TICKETS
592 modssl_ticket_key_t *ticket_key;
595 ssl_proto_t protocol;
598 /** config for handling encrypted keys */
599 ssl_pphrase_t pphrase_dialog_type;
600 const char *pphrase_dialog_path;
602 const char *cert_chain;
604 /** certificate revocation list */
605 const char *crl_path;
606 const char *crl_file;
607 ssl_crlcheck_t crl_check_mode;
609 #ifdef HAVE_OCSP_STAPLING
610 /** OCSP stapling options */
611 BOOL stapling_enabled;
612 long stapling_resptime_skew;
613 long stapling_resp_maxage;
614 int stapling_cache_timeout;
615 BOOL stapling_return_errors;
616 BOOL stapling_fake_trylater;
617 int stapling_errcache_timeout;
618 apr_interval_time_t stapling_responder_timeout;
619 const char *stapling_force_url;
624 char *srp_unknown_user_seed;
625 SRP_VBASE *srp_vbase;
628 modssl_auth_ctx_t auth;
630 BOOL ocsp_enabled; /* true if OCSP verification enabled */
631 BOOL ocsp_force_default; /* true if the default responder URL is
632 * used regardless of per-cert URL */
633 const char *ocsp_responder; /* default responder URL */
634 long ocsp_resptime_skew;
635 long ocsp_resp_maxage;
636 apr_interval_time_t ocsp_responder_timeout;
637 BOOL ocsp_use_request_nonce;
638 apr_uri_t *proxy_uri;
640 #ifdef HAVE_SSL_CONF_CMD
641 SSL_CONF_CTX *ssl_ctx_config; /* Configuration context */
642 apr_array_header_t *ssl_ctx_param; /* parameters to pass to SSL_CTX */
646 struct SSLSrvConfigRec {
648 ssl_enabled_t enabled;
650 const char *vhost_id;
652 int session_cache_timeout;
653 BOOL cipher_server_pref;
655 modssl_ctx_t *server;
657 ssl_enabled_t proxy_ssl_check_peer_expire;
658 ssl_enabled_t proxy_ssl_check_peer_cn;
659 ssl_enabled_t proxy_ssl_check_peer_name;
661 ssl_enabled_t strict_sni_vhost_check;
666 #ifndef OPENSSL_NO_COMP
669 BOOL session_tickets;
673 * Define the mod_ssl per-directory configuration structure
674 * (i.e. the local configuration for all <Directory>
675 * and .htaccess contexts)
679 apr_array_header_t *aRequirement;
681 ssl_opt_t nOptionsAdd;
682 ssl_opt_t nOptionsDel;
683 const char *szCipherSuite;
684 ssl_verify_t nVerifyClient;
686 const char *szCACertificatePath;
687 const char *szCACertificateFile;
688 const char *szUserName;
689 apr_size_t nRenegBufferSize;
693 * function prototypes
696 /** API glue structures */
697 extern module AP_MODULE_DECLARE_DATA ssl_module;
699 /** configuration handling */
700 SSLModConfigRec *ssl_config_global_create(server_rec *);
701 void ssl_config_global_fix(SSLModConfigRec *);
702 BOOL ssl_config_global_isfixed(SSLModConfigRec *);
703 void *ssl_config_server_create(apr_pool_t *, server_rec *);
704 void *ssl_config_server_merge(apr_pool_t *, void *, void *);
705 void *ssl_config_perdir_create(apr_pool_t *, char *);
706 void *ssl_config_perdir_merge(apr_pool_t *, void *, void *);
707 const char *ssl_cmd_SSLPassPhraseDialog(cmd_parms *, void *, const char *);
708 const char *ssl_cmd_SSLCryptoDevice(cmd_parms *, void *, const char *);
709 const char *ssl_cmd_SSLRandomSeed(cmd_parms *, void *, const char *, const char *, const char *);
710 const char *ssl_cmd_SSLEngine(cmd_parms *, void *, const char *);
711 const char *ssl_cmd_SSLCipherSuite(cmd_parms *, void *, const char *);
712 const char *ssl_cmd_SSLCertificateFile(cmd_parms *, void *, const char *);
713 const char *ssl_cmd_SSLCertificateKeyFile(cmd_parms *, void *, const char *);
714 const char *ssl_cmd_SSLCertificateChainFile(cmd_parms *, void *, const char *);
715 const char *ssl_cmd_SSLCACertificatePath(cmd_parms *, void *, const char *);
716 const char *ssl_cmd_SSLCACertificateFile(cmd_parms *, void *, const char *);
717 const char *ssl_cmd_SSLCADNRequestPath(cmd_parms *, void *, const char *);
718 const char *ssl_cmd_SSLCADNRequestFile(cmd_parms *, void *, const char *);
719 const char *ssl_cmd_SSLCARevocationPath(cmd_parms *, void *, const char *);
720 const char *ssl_cmd_SSLCARevocationFile(cmd_parms *, void *, const char *);
721 const char *ssl_cmd_SSLCARevocationCheck(cmd_parms *, void *, const char *);
722 const char *ssl_cmd_SSLHonorCipherOrder(cmd_parms *cmd, void *dcfg, int flag);
723 const char *ssl_cmd_SSLCompression(cmd_parms *, void *, int flag);
724 const char *ssl_cmd_SSLSessionTickets(cmd_parms *, void *, int flag);
725 const char *ssl_cmd_SSLVerifyClient(cmd_parms *, void *, const char *);
726 const char *ssl_cmd_SSLVerifyDepth(cmd_parms *, void *, const char *);
727 const char *ssl_cmd_SSLSessionCache(cmd_parms *, void *, const char *);
728 const char *ssl_cmd_SSLSessionCacheTimeout(cmd_parms *, void *, const char *);
729 const char *ssl_cmd_SSLProtocol(cmd_parms *, void *, const char *);
730 const char *ssl_cmd_SSLOptions(cmd_parms *, void *, const char *);
731 const char *ssl_cmd_SSLRequireSSL(cmd_parms *, void *);
732 const char *ssl_cmd_SSLRequire(cmd_parms *, void *, const char *);
733 const char *ssl_cmd_SSLUserName(cmd_parms *, void *, const char *);
734 const char *ssl_cmd_SSLRenegBufferSize(cmd_parms *cmd, void *dcfg, const char *arg);
735 const char *ssl_cmd_SSLStrictSNIVHostCheck(cmd_parms *cmd, void *dcfg, int flag);
736 const char *ssl_cmd_SSLInsecureRenegotiation(cmd_parms *cmd, void *dcfg, int flag);
738 const char *ssl_cmd_SSLProxyEngine(cmd_parms *cmd, void *dcfg, int flag);
739 const char *ssl_cmd_SSLProxyProtocol(cmd_parms *, void *, const char *);
740 const char *ssl_cmd_SSLProxyCipherSuite(cmd_parms *, void *, const char *);
741 const char *ssl_cmd_SSLProxyVerify(cmd_parms *, void *, const char *);
742 const char *ssl_cmd_SSLProxyVerifyDepth(cmd_parms *, void *, const char *);
743 const char *ssl_cmd_SSLProxyCACertificatePath(cmd_parms *, void *, const char *);
744 const char *ssl_cmd_SSLProxyCACertificateFile(cmd_parms *, void *, const char *);
745 const char *ssl_cmd_SSLProxyCARevocationPath(cmd_parms *, void *, const char *);
746 const char *ssl_cmd_SSLProxyCARevocationFile(cmd_parms *, void *, const char *);
747 const char *ssl_cmd_SSLProxyCARevocationCheck(cmd_parms *, void *, const char *);
748 const char *ssl_cmd_SSLProxyMachineCertificatePath(cmd_parms *, void *, const char *);
749 const char *ssl_cmd_SSLProxyMachineCertificateFile(cmd_parms *, void *, const char *);
750 const char *ssl_cmd_SSLProxyMachineCertificateChainFile(cmd_parms *, void *, const char *);
751 #ifdef HAVE_TLS_SESSION_TICKETS
752 const char *ssl_cmd_SSLSessionTicketKeyFile(cmd_parms *cmd, void *dcfg, const char *arg);
754 const char *ssl_cmd_SSLProxyCheckPeerExpire(cmd_parms *cmd, void *dcfg, int flag);
755 const char *ssl_cmd_SSLProxyCheckPeerCN(cmd_parms *cmd, void *dcfg, int flag);
756 const char *ssl_cmd_SSLProxyCheckPeerName(cmd_parms *cmd, void *dcfg, int flag);
758 const char *ssl_cmd_SSLOCSPOverrideResponder(cmd_parms *cmd, void *dcfg, int flag);
759 const char *ssl_cmd_SSLOCSPDefaultResponder(cmd_parms *cmd, void *dcfg, const char *arg);
760 const char *ssl_cmd_SSLOCSPResponseTimeSkew(cmd_parms *cmd, void *dcfg, const char *arg);
761 const char *ssl_cmd_SSLOCSPResponseMaxAge(cmd_parms *cmd, void *dcfg, const char *arg);
762 const char *ssl_cmd_SSLOCSPResponderTimeout(cmd_parms *cmd, void *dcfg, const char *arg);
763 const char *ssl_cmd_SSLOCSPUseRequestNonce(cmd_parms *cmd, void *dcfg, int flag);
764 const char *ssl_cmd_SSLOCSPEnable(cmd_parms *cmd, void *dcfg, int flag);
765 const char *ssl_cmd_SSLOCSPProxyURL(cmd_parms *cmd, void *dcfg, const char *arg);
767 #ifdef HAVE_SSL_CONF_CMD
768 const char *ssl_cmd_SSLOpenSSLConfCmd(cmd_parms *cmd, void *dcfg, const char *arg1, const char *arg2);
772 const char *ssl_cmd_SSLSRPVerifierFile(cmd_parms *cmd, void *dcfg, const char *arg);
773 const char *ssl_cmd_SSLSRPUnknownUserSeed(cmd_parms *cmd, void *dcfg, const char *arg);
776 const char *ssl_cmd_SSLFIPS(cmd_parms *cmd, void *dcfg, int flag);
778 /** module initialization */
779 apr_status_t ssl_init_Module(apr_pool_t *, apr_pool_t *, apr_pool_t *, server_rec *);
780 apr_status_t ssl_init_Engine(server_rec *, apr_pool_t *);
781 apr_status_t ssl_init_ConfigureServer(server_rec *, apr_pool_t *, apr_pool_t *, SSLSrvConfigRec *,
782 apr_array_header_t *);
783 apr_status_t ssl_init_CheckServers(server_rec *, apr_pool_t *);
785 *ssl_init_FindCAList(server_rec *, apr_pool_t *, const char *, const char *);
786 void ssl_init_Child(apr_pool_t *, server_rec *);
787 apr_status_t ssl_init_ModuleKill(void *data);
789 /** Apache API hooks */
790 int ssl_hook_Auth(request_rec *);
791 int ssl_hook_UserCheck(request_rec *);
792 int ssl_hook_Access(request_rec *);
793 int ssl_hook_Fixup(request_rec *);
794 int ssl_hook_ReadReq(request_rec *);
795 int ssl_hook_Upgrade(request_rec *);
796 void ssl_hook_ConfigTest(apr_pool_t *pconf, server_rec *s);
798 /** Apache authz provisders */
799 extern const authz_provider ssl_authz_provider_require_ssl;
800 extern const authz_provider ssl_authz_provider_verify_client;
802 /** OpenSSL callbacks */
803 DH *ssl_callback_TmpDH(SSL *, int, int);
804 int ssl_callback_SSLVerify(int, X509_STORE_CTX *);
805 int ssl_callback_SSLVerify_CRL(int, X509_STORE_CTX *, conn_rec *);
806 int ssl_callback_proxy_cert(SSL *ssl, X509 **x509, EVP_PKEY **pkey);
807 int ssl_callback_NewSessionCacheEntry(SSL *, SSL_SESSION *);
808 SSL_SESSION *ssl_callback_GetSessionCacheEntry(SSL *, unsigned char *, int, int *);
809 void ssl_callback_DelSessionCacheEntry(SSL_CTX *, SSL_SESSION *);
810 void ssl_callback_Info(const SSL *, int, int);
812 int ssl_callback_ServerNameIndication(SSL *, int *, modssl_ctx_t *);
814 #ifdef HAVE_TLS_SESSION_TICKETS
815 int ssl_callback_SessionTicket(SSL *, unsigned char *, unsigned char *,
816 EVP_CIPHER_CTX *, HMAC_CTX *, int);
820 int ssl_callback_alpn_select(SSL *ssl, const unsigned char **out,
821 unsigned char *outlen, const unsigned char *in,
822 unsigned int inlen, void *arg);
825 /** Session Cache Support */
826 apr_status_t ssl_scache_init(server_rec *, apr_pool_t *);
827 void ssl_scache_status_register(apr_pool_t *p);
828 void ssl_scache_kill(server_rec *);
829 BOOL ssl_scache_store(server_rec *, UCHAR *, int,
830 apr_time_t, SSL_SESSION *, apr_pool_t *);
831 SSL_SESSION *ssl_scache_retrieve(server_rec *, UCHAR *, int, apr_pool_t *);
832 void ssl_scache_remove(server_rec *, UCHAR *, int,
835 /** OCSP Stapling Support */
836 #ifdef HAVE_OCSP_STAPLING
837 const char *ssl_cmd_SSLStaplingCache(cmd_parms *, void *, const char *);
838 const char *ssl_cmd_SSLUseStapling(cmd_parms *, void *, int);
839 const char *ssl_cmd_SSLStaplingResponseTimeSkew(cmd_parms *, void *, const char *);
840 const char *ssl_cmd_SSLStaplingResponseMaxAge(cmd_parms *, void *, const char *);
841 const char *ssl_cmd_SSLStaplingStandardCacheTimeout(cmd_parms *, void *, const char *);
842 const char *ssl_cmd_SSLStaplingErrorCacheTimeout(cmd_parms *, void *, const char *);
843 const char *ssl_cmd_SSLStaplingReturnResponderErrors(cmd_parms *, void *, int);
844 const char *ssl_cmd_SSLStaplingFakeTryLater(cmd_parms *, void *, int);
845 const char *ssl_cmd_SSLStaplingResponderTimeout(cmd_parms *, void *, const char *);
846 const char *ssl_cmd_SSLStaplingForceURL(cmd_parms *, void *, const char *);
847 apr_status_t modssl_init_stapling(server_rec *, apr_pool_t *, apr_pool_t *, modssl_ctx_t *);
848 void ssl_stapling_certinfo_hash_init(apr_pool_t *);
849 int ssl_stapling_init_cert(server_rec *, apr_pool_t *, apr_pool_t *,
850 modssl_ctx_t *, X509 *);
853 int ssl_callback_SRPServerParams(SSL *, int *, void *);
857 void ssl_io_filter_init(conn_rec *, request_rec *r, SSL *);
858 void ssl_io_filter_register(apr_pool_t *);
859 long ssl_io_data_cb(BIO *, int, const char *, int, long, long);
861 /* ssl_io_buffer_fill fills the setaside buffering of the HTTP request
862 * to allow an SSL renegotiation to take place. */
863 int ssl_io_buffer_fill(request_rec *r, apr_size_t maxlen);
866 int ssl_rand_seed(server_rec *, apr_pool_t *, ssl_rsctx_t, char *);
868 /** Utility Functions */
869 char *ssl_util_vhostid(apr_pool_t *, server_rec *);
870 apr_file_t *ssl_util_ppopen(server_rec *, apr_pool_t *, const char *,
871 const char * const *);
872 void ssl_util_ppclose(server_rec *, apr_pool_t *, apr_file_t *);
873 char *ssl_util_readfilter(server_rec *, apr_pool_t *, const char *,
874 const char * const *);
875 BOOL ssl_util_path_check(ssl_pathcheck_t, const char *, apr_pool_t *);
876 void ssl_util_thread_setup(apr_pool_t *);
877 int ssl_init_ssl_connection(conn_rec *c, request_rec *r);
879 BOOL ssl_util_vhost_matches(const char *servername, server_rec *s);
881 /** Pass Phrase Support */
882 apr_status_t ssl_load_encrypted_pkey(server_rec *, apr_pool_t *, int,
883 const char *, apr_array_header_t **);
885 /** Diffie-Hellman Parameter Support */
886 DH *ssl_dh_GetParamFromFile(const char *);
888 EC_GROUP *ssl_ec_GetParamFromFile(const char *);
891 unsigned char *ssl_asn1_table_set(apr_hash_t *table,
895 ssl_asn1_t *ssl_asn1_table_get(apr_hash_t *table,
898 void ssl_asn1_table_unset(apr_hash_t *table,
902 int ssl_mutex_init(server_rec *, apr_pool_t *);
903 int ssl_mutex_reinit(server_rec *, apr_pool_t *);
904 int ssl_mutex_on(server_rec *);
905 int ssl_mutex_off(server_rec *);
907 int ssl_stapling_mutex_reinit(server_rec *, apr_pool_t *);
909 /* mutex type names for Mutex directive */
910 #define SSL_CACHE_MUTEX_TYPE "ssl-cache"
911 #define SSL_STAPLING_CACHE_MUTEX_TYPE "ssl-stapling"
912 #define SSL_STAPLING_REFRESH_MUTEX_TYPE "ssl-stapling-refresh"
914 apr_status_t ssl_die(server_rec *);
916 /** Logfile Support */
917 void ssl_log_ssl_error(const char *, int, int, server_rec *);
919 /* ssl_log_xerror, ssl_log_cxerror and ssl_log_rxerror are wrappers for the
920 * respective ap_log_*error functions and take a certificate as an
921 * additional argument (whose details are appended to the log message).
922 * The other arguments are interpreted exactly as with their ap_log_*error
924 void ssl_log_xerror(const char *file, int line, int level,
925 apr_status_t rv, apr_pool_t *p, server_rec *s,
926 X509 *cert, const char *format, ...)
927 __attribute__((format(printf,8,9)));
929 void ssl_log_cxerror(const char *file, int line, int level,
930 apr_status_t rv, conn_rec *c, X509 *cert,
931 const char *format, ...)
932 __attribute__((format(printf,7,8)));
934 void ssl_log_rxerror(const char *file, int line, int level,
935 apr_status_t rv, request_rec *r, X509 *cert,
936 const char *format, ...)
937 __attribute__((format(printf,7,8)));
939 #define SSLLOG_MARK __FILE__,__LINE__
943 /* Register variables for the lifetime of the process pool 'p'. */
944 void ssl_var_register(apr_pool_t *p);
945 char *ssl_var_lookup(apr_pool_t *, server_rec *, conn_rec *, request_rec *, char *);
946 apr_array_header_t *ssl_ext_list(apr_pool_t *p, conn_rec *c, int peer, const char *extension);
948 void ssl_var_log_config_register(apr_pool_t *p);
950 /* Extract SSL_*_DN_* variables into table 't' from SSL object 'ssl',
951 * allocating from 'p': */
952 void modssl_var_extract_dns(apr_table_t *t, SSL *ssl, apr_pool_t *p);
954 /* Extract SSL_*_SAN_* variables (subjectAltName entries) into table 't'
955 * from SSL object 'ssl', allocating from 'p'. */
956 void modssl_var_extract_san_entries(apr_table_t *t, SSL *ssl, apr_pool_t *p);
958 #ifndef OPENSSL_NO_OCSP
959 /* Perform OCSP validation of the current cert in the given context.
960 * Returns non-zero on success or zero on failure. On failure, the
961 * context error code is set. */
962 int modssl_verify_ocsp(X509_STORE_CTX *ctx, SSLSrvConfigRec *sc,
963 server_rec *s, conn_rec *c, apr_pool_t *pool);
965 /* OCSP helper interface; dispatches the given OCSP request to the
966 * responder at the given URI. Returns the decoded OCSP response
967 * object, or NULL on error (in which case, errors will have been
968 * logged). Pool 'p' is used for temporary allocations. */
969 OCSP_RESPONSE *modssl_dispatch_ocsp_request(const apr_uri_t *uri,
970 apr_interval_time_t timeout,
971 OCSP_REQUEST *request,
972 conn_rec *c, apr_pool_t *p);
975 /* Retrieve DH parameters for given key length. Return value should
976 * be treated as unmutable, since it is stored in process-global
978 DH *modssl_get_dh_params(unsigned keylen);
981 extern int ssl_running_on_valgrind;
984 #endif /* SSL_PRIVATE_H */