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(LIBRESSL_VERSION_NUMBER)
127 /* Missing from LibreSSL */
128 #if LIBRESSL_VERSION_NUMBER < 0x2060000f
129 #define SSL_CTRL_SET_MIN_PROTO_VERSION 123
130 #define SSL_CTRL_SET_MAX_PROTO_VERSION 124
131 #define SSL_CTX_set_min_proto_version(ctx, version) \
132 SSL_CTX_ctrl(ctx, SSL_CTRL_SET_MIN_PROTO_VERSION, version, NULL)
133 #define SSL_CTX_set_max_proto_version(ctx, version) \
134 SSL_CTX_ctrl(ctx, SSL_CTRL_SET_MAX_PROTO_VERSION, version, NULL)
135 #elif LIBRESSL_VERSION_NUMBER < 0x2070000f
136 /* LibreSSL before 2.7 declares OPENSSL_VERSION_NUMBER == 2.0 but does not
137 * include most changes from OpenSSL >= 1.1 (new functions, macros,
138 * deprecations, ...), so we have to work around this...
140 #define MODSSL_USE_OPENSSL_PRE_1_1_API (1)
141 #endif /* LIBRESSL_VERSION_NUMBER < 0x2060000f */
142 #else /* defined(LIBRESSL_VERSION_NUMBER) */
143 #define MODSSL_USE_OPENSSL_PRE_1_1_API (OPENSSL_VERSION_NUMBER < 0x10100000L)
146 #if defined(OPENSSL_FIPS)
150 #if defined(SSL_OP_NO_TLSv1_2)
154 #if defined(SSL_CONF_FLAG_FILE)
155 #define HAVE_SSL_CONF_CMD
158 /* session id constness */
159 #if MODSSL_USE_OPENSSL_PRE_1_1_API
162 #define IDCONST const
166 * The following features all depend on TLS extension support.
167 * Within this block, check again for features (not version numbers).
169 #if !defined(OPENSSL_NO_TLSEXT) && defined(SSL_set_tlsext_host_name)
173 /* ECC: make sure we have at least 1.0.0 */
174 #if !defined(OPENSSL_NO_EC) && defined(TLSEXT_ECPOINTFORMAT_uncompressed)
179 #if !defined(OPENSSL_NO_OCSP) && defined(SSL_CTX_set_tlsext_status_cb)
180 #define HAVE_OCSP_STAPLING
181 /* All exist but are no longer macros since OpenSSL 1.1.0 */
182 #if OPENSSL_VERSION_NUMBER < 0x10100000L
183 /* backward compatibility with OpenSSL < 1.0 */
184 #ifndef sk_OPENSSL_STRING_num
185 #define sk_OPENSSL_STRING_num sk_num
187 #ifndef sk_OPENSSL_STRING_value
188 #define sk_OPENSSL_STRING_value sk_value
190 #ifndef sk_OPENSSL_STRING_pop
191 #define sk_OPENSSL_STRING_pop sk_pop
193 #endif /* if OPENSSL_VERSION_NUMBER < 0x10100000L */
194 #endif /* if !defined(OPENSSL_NO_OCSP) && defined(SSL_CTX_set_tlsext_status_cb) */
196 /* TLS session tickets */
197 #if defined(SSL_CTX_set_tlsext_ticket_key_cb)
198 #define HAVE_TLS_SESSION_TICKETS
199 #define TLSEXT_TICKET_KEY_LEN 48
200 #ifndef tlsext_tick_md
201 #ifdef OPENSSL_NO_SHA256
202 #define tlsext_tick_md EVP_sha1
204 #define tlsext_tick_md EVP_sha256
209 /* Secure Remote Password */
210 #if !defined(OPENSSL_NO_SRP) && defined(SSL_CTRL_SET_TLS_EXT_SRP_USERNAME_CB)
212 #include <openssl/srp.h>
215 /* ALPN Protocol Negotiation */
216 #if defined(TLSEXT_TYPE_application_layer_protocol_negotiation)
217 #define HAVE_TLS_ALPN
220 #endif /* !defined(OPENSSL_NO_TLSEXT) && defined(SSL_set_tlsext_host_name) */
222 #if MODSSL_USE_OPENSSL_PRE_1_1_API
223 #define BN_get_rfc2409_prime_768 get_rfc2409_prime_768
224 #define BN_get_rfc2409_prime_1024 get_rfc2409_prime_1024
225 #define BN_get_rfc3526_prime_1536 get_rfc3526_prime_1536
226 #define BN_get_rfc3526_prime_2048 get_rfc3526_prime_2048
227 #define BN_get_rfc3526_prime_3072 get_rfc3526_prime_3072
228 #define BN_get_rfc3526_prime_4096 get_rfc3526_prime_4096
229 #define BN_get_rfc3526_prime_6144 get_rfc3526_prime_6144
230 #define BN_get_rfc3526_prime_8192 get_rfc3526_prime_8192
231 #define BIO_set_init(x,v) (x->init=v)
232 #define BIO_get_data(x) (x->ptr)
233 #define BIO_set_data(x,v) (x->ptr=v)
234 #define BIO_get_shutdown(x) (x->shutdown)
235 #define BIO_set_shutdown(x,v) (x->shutdown=v)
236 #define DH_bits(x) (BN_num_bits(x->p))
238 void init_bio_methods(void);
239 void free_bio_methods(void);
242 #if OPENSSL_VERSION_NUMBER < 0x10002000L || \
243 (defined(LIBRESSL_VERSION_NUMBER) && LIBRESSL_VERSION_NUMBER < 0x2070000f)
244 #define X509_STORE_CTX_get0_store(x) (x->ctx)
247 #if OPENSSL_VERSION_NUMBER < 0x10000000L
248 #ifndef X509_STORE_CTX_get0_current_issuer
249 #define X509_STORE_CTX_get0_current_issuer(x) (x->current_issuer)
253 /* mod_ssl headers */
254 #include "ssl_util_ssl.h"
256 APLOG_USE_MODULE(ssl);
259 * Provide reasonable default for some defines
269 #define RAND_MAX INT_MAX
273 * Provide reasonable defines for some types
276 #define UCHAR unsigned char
280 * Provide useful shorthands
282 #define strEQ(s1,s2) (strcmp(s1,s2) == 0)
283 #define strNE(s1,s2) (strcmp(s1,s2) != 0)
284 #define strEQn(s1,s2,n) (strncmp(s1,s2,n) == 0)
285 #define strNEn(s1,s2,n) (strncmp(s1,s2,n) != 0)
287 #define strcEQ(s1,s2) (strcasecmp(s1,s2) == 0)
288 #define strcNE(s1,s2) (strcasecmp(s1,s2) != 0)
289 #define strcEQn(s1,s2,n) (strncasecmp(s1,s2,n) == 0)
290 #define strcNEn(s1,s2,n) (strncasecmp(s1,s2,n) != 0)
292 #define strIsEmpty(s) (s == NULL || s[0] == NUL)
294 #define myConnConfig(c) \
295 ((SSLConnRec *)ap_get_module_config(c->conn_config, &ssl_module))
296 #define myConnConfigSet(c, val) \
297 ap_set_module_config(c->conn_config, &ssl_module, val)
298 #define mySrvConfig(srv) \
299 ((SSLSrvConfigRec *)ap_get_module_config(srv->module_config, &ssl_module))
300 #define myDirConfig(req) \
301 ((SSLDirConfigRec *)ap_get_module_config(req->per_dir_config, &ssl_module))
302 #define myCtxConfig(sslconn, sc) \
303 (sslconn->is_proxy ? sslconn->dc->proxy : sc->server)
304 #define myModConfig(srv) mySrvConfig((srv))->mc
305 #define mySrvFromConn(c) myConnConfig(c)->server
306 #define myDirConfigFromConn(c) myConnConfig(c)->dc
307 #define mySrvConfigFromConn(c) mySrvConfig(mySrvFromConn(c))
308 #define myModConfigFromConn(c) myModConfig(mySrvFromConn(c))
311 * Defaults for the configuration
313 #ifndef SSL_SESSION_CACHE_TIMEOUT
314 #define SSL_SESSION_CACHE_TIMEOUT 300
317 /* Default setting for per-dir reneg buffer. */
318 #ifndef DEFAULT_RENEG_BUFFER_SIZE
319 #define DEFAULT_RENEG_BUFFER_SIZE (128 * 1024)
322 /* Default for OCSP response validity */
323 #ifndef DEFAULT_OCSP_MAX_SKEW
324 #define DEFAULT_OCSP_MAX_SKEW (60 * 5)
327 /* Default timeout for OCSP queries */
328 #ifndef DEFAULT_OCSP_TIMEOUT
329 #define DEFAULT_OCSP_TIMEOUT 10
333 * Define the SSL options
335 #define SSL_OPT_NONE (0)
336 #define SSL_OPT_RELSET (1<<0)
337 #define SSL_OPT_STDENVVARS (1<<1)
338 #define SSL_OPT_EXPORTCERTDATA (1<<3)
339 #define SSL_OPT_FAKEBASICAUTH (1<<4)
340 #define SSL_OPT_STRICTREQUIRE (1<<5)
341 #define SSL_OPT_OPTRENEGOTIATE (1<<6)
342 #define SSL_OPT_LEGACYDNFORMAT (1<<7)
343 typedef int ssl_opt_t;
346 * Define the SSL Protocol options
348 #define SSL_PROTOCOL_NONE (0)
349 #ifndef OPENSSL_NO_SSL3
350 #define SSL_PROTOCOL_SSLV3 (1<<1)
352 #define SSL_PROTOCOL_TLSV1 (1<<2)
353 #ifndef OPENSSL_NO_SSL3
354 #define SSL_PROTOCOL_BASIC (SSL_PROTOCOL_SSLV3|SSL_PROTOCOL_TLSV1)
356 #define SSL_PROTOCOL_BASIC (SSL_PROTOCOL_TLSV1)
359 #define SSL_PROTOCOL_TLSV1_1 (1<<3)
360 #define SSL_PROTOCOL_TLSV1_2 (1<<4)
361 #define SSL_PROTOCOL_TLSV1_3 (1<<5)
363 #ifdef SSL_OP_NO_TLSv1_3
364 #define SSL_HAVE_PROTOCOL_TLSV1_3 (1)
365 #define SSL_PROTOCOL_ALL (SSL_PROTOCOL_BASIC| \
366 SSL_PROTOCOL_TLSV1_1|SSL_PROTOCOL_TLSV1_2|SSL_PROTOCOL_TLSV1_3)
368 #define SSL_HAVE_PROTOCOL_TLSV1_3 (0)
369 #define SSL_PROTOCOL_ALL (SSL_PROTOCOL_BASIC| \
370 SSL_PROTOCOL_TLSV1_1|SSL_PROTOCOL_TLSV1_2)
373 #define SSL_PROTOCOL_ALL (SSL_PROTOCOL_BASIC)
375 #ifndef OPENSSL_NO_SSL3
376 #define SSL_PROTOCOL_DEFAULT (SSL_PROTOCOL_ALL & ~SSL_PROTOCOL_SSLV3)
378 #define SSL_PROTOCOL_DEFAULT (SSL_PROTOCOL_ALL)
380 typedef int ssl_proto_t;
383 * Define the SSL verify levels
386 SSL_CVERIFY_UNSET = UNSET,
387 SSL_CVERIFY_NONE = 0,
388 SSL_CVERIFY_OPTIONAL = 1,
389 SSL_CVERIFY_REQUIRE = 2,
390 SSL_CVERIFY_OPTIONAL_NO_CA = 3
393 #define SSL_VERIFY_PEER_STRICT \
394 (SSL_VERIFY_PEER|SSL_VERIFY_FAIL_IF_NO_PEER_CERT)
396 #define ssl_verify_error_is_optional(errnum) \
397 ((errnum == X509_V_ERR_DEPTH_ZERO_SELF_SIGNED_CERT) \
398 || (errnum == X509_V_ERR_SELF_SIGNED_CERT_IN_CHAIN) \
399 || (errnum == X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT_LOCALLY) \
400 || (errnum == X509_V_ERR_CERT_UNTRUSTED) \
401 || (errnum == X509_V_ERR_UNABLE_TO_VERIFY_LEAF_SIGNATURE))
404 * CRL checking mask (mode | flags)
407 SSL_CRLCHECK_NONE = (0),
408 SSL_CRLCHECK_LEAF = (1 << 0),
409 SSL_CRLCHECK_CHAIN = (1 << 1),
411 #define SSL_CRLCHECK_FLAGS (~0x3)
412 SSL_CRLCHECK_NO_CRL_FOR_CERT_OK = (1 << 2)
416 * OCSP checking mask (mode | flags)
419 SSL_OCSPCHECK_NONE = (0),
420 SSL_OCSPCHECK_LEAF = (1 << 0),
421 SSL_OCSPCHECK_CHAIN = (1 << 1),
422 SSL_OCSPCHECK_NO_OCSP_FOR_CERT_OK = (1 << 2)
426 * Define the SSL pass phrase dialog types
429 SSL_PPTYPE_UNSET = UNSET,
430 SSL_PPTYPE_BUILTIN = 0,
431 SSL_PPTYPE_FILTER = 1,
436 * Define the Path Checking modes
438 #define SSL_PCM_EXISTS 1
439 #define SSL_PCM_ISREG 2
440 #define SSL_PCM_ISDIR 4
441 #define SSL_PCM_ISNONZERO 8
442 typedef unsigned int ssl_pathcheck_t;
445 * Define the SSL enabled state
448 SSL_ENABLED_UNSET = UNSET,
449 SSL_ENABLED_FALSE = 0,
450 SSL_ENABLED_TRUE = 1,
451 SSL_ENABLED_OPTIONAL = 3
455 * Define the SSL requirement structure
459 ap_expr_info_t *mpExpr;
463 * Define the SSL random number generator seeding source
466 SSL_RSCTX_STARTUP = 1,
467 SSL_RSCTX_CONNECT = 2
470 SSL_RSSRC_BUILTIN = 1,
483 * Define the structure of an ASN.1 anything
487 unsigned char *cpData;
488 apr_time_t source_mtime;
492 * Define the mod_ssl per-module configuration structure
493 * (i.e. the global configuration for each httpd process)
496 typedef struct SSLSrvConfigRec SSLSrvConfigRec;
497 typedef struct SSLDirConfigRec SSLDirConfigRec;
500 SSL_SHUTDOWN_TYPE_UNSET,
501 SSL_SHUTDOWN_TYPE_STANDARD,
502 SSL_SHUTDOWN_TYPE_UNCLEAN,
503 SSL_SHUTDOWN_TYPE_ACCURATE
504 } ssl_shutdown_type_e;
508 const char *client_dn;
510 ssl_shutdown_type_e shutdown_type;
511 const char *verify_info;
512 const char *verify_error;
517 NON_SSL_OK = 0, /* is SSL request, or error handling completed */
518 NON_SSL_SEND_REQLINE, /* Need to send the fake request line */
519 NON_SSL_SEND_HDR_SEP, /* Need to send the header separator */
520 NON_SSL_SET_ERROR_MSG /* Need to set the error message */
523 /* Track the handshake/renegotiation state for the connection so
524 * that all client-initiated renegotiations can be rejected, as a
525 * partial fix for CVE-2009-3555. */
527 RENEG_INIT = 0, /* Before initial handshake */
528 RENEG_REJECT, /* After initial handshake; any client-initiated
529 * renegotiation should be rejected */
530 RENEG_ALLOW, /* A server-initiated renegotiation is taking
531 * place (as dictated by configuration) */
532 RENEG_ABORT /* Renegotiation initiated by client, abort the
539 const char *cipher_suite; /* cipher suite used in last reneg */
540 int service_unavailable; /* thouugh we negotiate SSL, no requests will be served */
543 /* BIG FAT WARNING: SSLModConfigRec has unusual memory lifetime: it is
544 * allocated out of the "process" pool and only a single such
545 * structure is created and used for the lifetime of the process.
546 * (The process pool is s->process->pool and is stored in the .pPool
547 * field.) Most members of this structure are likewise allocated out
548 * of the process pool, but notably sesscache and sesscache_context
551 * The structure is treated as mostly immutable after a single config
552 * parse has completed; the post_config hook (ssl_init_Module) flips
553 * the bFixed flag to true and subsequent invocations of the config
554 * callbacks hence do nothing.
556 * This odd lifetime strategy is used so that encrypted private keys
557 * can be decrypted once at startup and continue to be used across
558 * subsequent server reloads where the interactive password prompt is
561 * It is really an ABI nightmare waiting to happen since DSOs are
562 * reloaded across restarts, and nothing prevents the struct type
563 * changing across such reloads, yet the cached structure will be
564 * assumed to match regardless.
566 * This should really be fixed using a smaller structure which only
567 * stores that which is absolutely necessary (the private keys, maybe
568 * the random seed), and have that structure be strictly ABI-versioned
576 /* OpenSSL SSL_SESS_CACHE_* flags: */
579 /* The configured provider, and associated private data
581 const ap_socache_provider_t *sesscache;
582 ap_socache_instance_t *sesscache_context;
584 apr_global_mutex_t *pMutex;
585 apr_array_header_t *aRandSeed;
586 apr_hash_t *tVHostKeys;
588 /* A hash table of pointers to ssl_asn1_t structures. The structures
589 * are used to store private keys in raw DER format (serialized OpenSSL
590 * PrivateKey structures). The table is indexed by (vhost-id,
591 * index), for example the string "vhost.example.com:443:0". */
592 apr_hash_t *tPrivateKey;
594 #if defined(HAVE_OPENSSL_ENGINE_H) && defined(HAVE_ENGINE_INIT)
595 const char *szCryptoDevice;
598 #ifdef HAVE_OCSP_STAPLING
599 const ap_socache_provider_t *stapling_cache;
600 ap_socache_instance_t *stapling_cache_context;
601 apr_global_mutex_t *stapling_cache_mutex;
602 apr_global_mutex_t *stapling_refresh_mutex;
607 /** Structure representing configured filenames for certs and keys for
610 /* Lists of configured certs and keys for this server */
611 apr_array_header_t *cert_files;
612 apr_array_header_t *key_files;
614 /** Certificates which specify the set of CA names which should be
615 * sent in the CertificateRequest message: */
616 const char *ca_name_path;
617 const char *ca_name_file;
619 /* TLS service for this server is suspended */
620 int service_unavailable;
621 } modssl_pk_server_t;
624 /** proxy can have any number of cert/key pairs */
625 const char *cert_file;
626 const char *cert_path;
627 const char *ca_cert_file;
628 STACK_OF(X509_INFO) *certs; /* Contains End Entity certs */
629 STACK_OF(X509) **ca_certs; /* Contains ONLY chain certs for
630 * each item in certs.
631 * (ptr to array of ptrs) */
634 /** stuff related to authentication that can also be per-dir */
636 /** known/trusted CAs */
637 const char *ca_cert_path;
638 const char *ca_cert_file;
640 const char *cipher_suite;
642 /** for client or downstream server authentication */
644 ssl_verify_t verify_mode;
646 /** TLSv1.3 has its separate cipher list, separate from the
647 settings for older TLS protocol versions. Since which one takes
648 effect is a matter of negotiation, we need separate settings */
649 const char *tls13_ciphers;
652 #ifdef HAVE_TLS_SESSION_TICKETS
654 const char *file_path;
655 unsigned char key_name[16];
656 unsigned char hmac_secret[16];
657 unsigned char aes_key[16];
658 } modssl_ticket_key_t;
661 #ifdef HAVE_SSL_CONF_CMD
669 SSLSrvConfigRec *sc; /** pointer back to server config */
672 /** we are one or the other */
673 modssl_pk_server_t *pks;
674 modssl_pk_proxy_t *pkp;
676 #ifdef HAVE_TLS_SESSION_TICKETS
677 modssl_ticket_key_t *ticket_key;
680 ssl_proto_t protocol;
683 /** config for handling encrypted keys */
684 ssl_pphrase_t pphrase_dialog_type;
685 const char *pphrase_dialog_path;
687 const char *cert_chain;
689 /** certificate revocation list */
690 const char *crl_path;
691 const char *crl_file;
694 #ifdef HAVE_OCSP_STAPLING
695 /** OCSP stapling options */
696 BOOL stapling_enabled;
697 long stapling_resptime_skew;
698 long stapling_resp_maxage;
699 int stapling_cache_timeout;
700 BOOL stapling_return_errors;
701 BOOL stapling_fake_trylater;
702 int stapling_errcache_timeout;
703 apr_interval_time_t stapling_responder_timeout;
704 const char *stapling_force_url;
709 char *srp_unknown_user_seed;
710 SRP_VBASE *srp_vbase;
713 modssl_auth_ctx_t auth;
716 BOOL ocsp_force_default; /* true if the default responder URL is
717 * used regardless of per-cert URL */
718 const char *ocsp_responder; /* default responder URL */
719 long ocsp_resptime_skew;
720 long ocsp_resp_maxage;
721 apr_interval_time_t ocsp_responder_timeout;
722 BOOL ocsp_use_request_nonce;
723 apr_uri_t *proxy_uri;
725 BOOL ocsp_noverify; /* true if skipping OCSP certification verification like openssl -noverify */
726 /* Declare variables for using OCSP Responder Certs for OCSP verification */
727 int ocsp_verify_flags; /* Flags to use when verifying OCSP response */
728 const char *ocsp_certs_file; /* OCSP other certificates filename */
729 STACK_OF(X509) *ocsp_certs; /* OCSP other certificates */
731 #ifdef HAVE_SSL_CONF_CMD
732 SSL_CONF_CTX *ssl_ctx_config; /* Configuration context */
733 apr_array_header_t *ssl_ctx_param; /* parameters to pass to SSL_CTX */
736 BOOL ssl_check_peer_cn;
737 BOOL ssl_check_peer_name;
738 BOOL ssl_check_peer_expire;
741 struct SSLSrvConfigRec {
743 ssl_enabled_t enabled;
744 const char *vhost_id;
746 int session_cache_timeout;
747 BOOL cipher_server_pref;
749 modssl_ctx_t *server;
751 ssl_enabled_t strict_sni_vhost_check;
756 #ifndef OPENSSL_NO_COMP
759 BOOL session_tickets;
764 * Define the mod_ssl per-directory configuration structure
765 * (i.e. the local configuration for all <Directory>
766 * and .htaccess contexts)
768 struct SSLDirConfigRec {
770 apr_array_header_t *aRequirement;
772 ssl_opt_t nOptionsAdd;
773 ssl_opt_t nOptionsDel;
774 const char *szCipherSuite;
775 ssl_verify_t nVerifyClient;
777 const char *szUserName;
778 apr_size_t nRenegBufferSize;
782 BOOL proxy_post_config;
785 typedef struct SSLPolicyRec SSLPolicyRec;
786 struct SSLPolicyRec {
791 SSLPolicyRec *ssl_policy_lookup(apr_pool_t *pool, const char *name);
794 * function prototypes
797 /** API glue structures */
798 extern module AP_MODULE_DECLARE_DATA ssl_module;
800 /** configuration handling */
801 SSLModConfigRec *ssl_config_global_create(server_rec *);
802 void ssl_config_global_fix(SSLModConfigRec *);
803 BOOL ssl_config_global_isfixed(SSLModConfigRec *);
804 void *ssl_config_server_create(apr_pool_t *, server_rec *);
805 void *ssl_config_server_merge(apr_pool_t *, void *, void *);
806 void *ssl_config_perdir_create(apr_pool_t *, char *);
807 void *ssl_config_perdir_merge(apr_pool_t *, void *, void *);
808 void ssl_config_proxy_merge(apr_pool_t *,
809 SSLDirConfigRec *, SSLDirConfigRec *);
810 const char *ssl_cmd_SSLPolicyApply(cmd_parms *, void *, const char *);
811 const char *ssl_cmd_SSLPassPhraseDialog(cmd_parms *, void *, const char *);
812 const char *ssl_cmd_SSLCryptoDevice(cmd_parms *, void *, const char *);
813 const char *ssl_cmd_SSLRandomSeed(cmd_parms *, void *, const char *, const char *, const char *);
814 const char *ssl_cmd_SSLEngine(cmd_parms *, void *, const char *);
815 const char *ssl_cmd_SSLCipherSuite(cmd_parms *, void *, const char *, const char *);
816 const char *ssl_cmd_SSLCertificateFile(cmd_parms *, void *, const char *);
817 const char *ssl_cmd_SSLCertificateKeyFile(cmd_parms *, void *, const char *);
818 const char *ssl_cmd_SSLCertificateChainFile(cmd_parms *, void *, const char *);
819 const char *ssl_cmd_SSLCACertificatePath(cmd_parms *, void *, const char *);
820 const char *ssl_cmd_SSLCACertificateFile(cmd_parms *, void *, const char *);
821 const char *ssl_cmd_SSLCADNRequestPath(cmd_parms *, void *, const char *);
822 const char *ssl_cmd_SSLCADNRequestFile(cmd_parms *, void *, const char *);
823 const char *ssl_cmd_SSLCARevocationPath(cmd_parms *, void *, const char *);
824 const char *ssl_cmd_SSLCARevocationFile(cmd_parms *, void *, const char *);
825 const char *ssl_cmd_SSLCARevocationCheck(cmd_parms *, void *, const char *);
826 const char *ssl_cmd_SSLHonorCipherOrder(cmd_parms *cmd, void *dcfg, int flag);
827 const char *ssl_cmd_SSLCompression(cmd_parms *, void *, int flag);
828 const char *ssl_cmd_SSLSessionTickets(cmd_parms *, void *, int flag);
829 const char *ssl_cmd_SSLVerifyClient(cmd_parms *, void *, const char *);
830 const char *ssl_cmd_SSLVerifyDepth(cmd_parms *, void *, const char *);
831 const char *ssl_cmd_SSLSessionCache(cmd_parms *, void *, const char *);
832 const char *ssl_cmd_SSLSessionCacheTimeout(cmd_parms *, void *, const char *);
833 const char *ssl_cmd_SSLProtocol(cmd_parms *, void *, const char *);
834 const char *ssl_cmd_SSLOptions(cmd_parms *, void *, const char *);
835 const char *ssl_cmd_SSLRequireSSL(cmd_parms *, void *);
836 const char *ssl_cmd_SSLRequire(cmd_parms *, void *, const char *);
837 const char *ssl_cmd_SSLUserName(cmd_parms *, void *, const char *);
838 const char *ssl_cmd_SSLRenegBufferSize(cmd_parms *cmd, void *dcfg, const char *arg);
839 const char *ssl_cmd_SSLStrictSNIVHostCheck(cmd_parms *cmd, void *dcfg, int flag);
840 const char *ssl_cmd_SSLInsecureRenegotiation(cmd_parms *cmd, void *dcfg, int flag);
842 const char *ssl_cmd_SSLProxyEngine(cmd_parms *cmd, void *dcfg, int flag);
843 const char *ssl_cmd_SSLProxyProtocol(cmd_parms *, void *, const char *);
844 const char *ssl_cmd_SSLProxyCipherSuite(cmd_parms *, void *, const char *, const char *);
845 const char *ssl_cmd_SSLProxyVerify(cmd_parms *, void *, const char *);
846 const char *ssl_cmd_SSLProxyVerifyDepth(cmd_parms *, void *, const char *);
847 const char *ssl_cmd_SSLProxyCACertificatePath(cmd_parms *, void *, const char *);
848 const char *ssl_cmd_SSLProxyCACertificateFile(cmd_parms *, void *, const char *);
849 const char *ssl_cmd_SSLProxyCARevocationPath(cmd_parms *, void *, const char *);
850 const char *ssl_cmd_SSLProxyCARevocationFile(cmd_parms *, void *, const char *);
851 const char *ssl_cmd_SSLProxyCARevocationCheck(cmd_parms *, void *, const char *);
852 const char *ssl_cmd_SSLProxyMachineCertificatePath(cmd_parms *, void *, const char *);
853 const char *ssl_cmd_SSLProxyMachineCertificateFile(cmd_parms *, void *, const char *);
854 const char *ssl_cmd_SSLProxyMachineCertificateChainFile(cmd_parms *, void *, const char *);
855 #ifdef HAVE_TLS_SESSION_TICKETS
856 const char *ssl_cmd_SSLSessionTicketKeyFile(cmd_parms *cmd, void *dcfg, const char *arg);
858 const char *ssl_cmd_SSLProxyCheckPeerExpire(cmd_parms *cmd, void *dcfg, int flag);
859 const char *ssl_cmd_SSLProxyCheckPeerCN(cmd_parms *cmd, void *dcfg, int flag);
860 const char *ssl_cmd_SSLProxyCheckPeerName(cmd_parms *cmd, void *dcfg, int flag);
862 const char *ssl_cmd_SSLOCSPOverrideResponder(cmd_parms *cmd, void *dcfg, int flag);
863 const char *ssl_cmd_SSLOCSPDefaultResponder(cmd_parms *cmd, void *dcfg, const char *arg);
864 const char *ssl_cmd_SSLOCSPResponseTimeSkew(cmd_parms *cmd, void *dcfg, const char *arg);
865 const char *ssl_cmd_SSLOCSPResponseMaxAge(cmd_parms *cmd, void *dcfg, const char *arg);
866 const char *ssl_cmd_SSLOCSPResponderTimeout(cmd_parms *cmd, void *dcfg, const char *arg);
867 const char *ssl_cmd_SSLOCSPUseRequestNonce(cmd_parms *cmd, void *dcfg, int flag);
868 const char *ssl_cmd_SSLOCSPEnable(cmd_parms *cmd, void *dcfg, const char *arg);
869 const char *ssl_cmd_SSLOCSPProxyURL(cmd_parms *cmd, void *dcfg, const char *arg);
871 /* Declare OCSP Responder Certificate Verification Directive */
872 const char *ssl_cmd_SSLOCSPNoVerify(cmd_parms *cmd, void *dcfg, int flag);
873 /* Declare OCSP Responder Certificate File Directive */
874 const char *ssl_cmd_SSLOCSPResponderCertificateFile(cmd_parms *cmd, void *dcfg, const char *arg);
876 #ifdef HAVE_SSL_CONF_CMD
877 const char *ssl_cmd_SSLOpenSSLConfCmd(cmd_parms *cmd, void *dcfg, const char *arg1, const char *arg2);
881 const char *ssl_cmd_SSLSRPVerifierFile(cmd_parms *cmd, void *dcfg, const char *arg);
882 const char *ssl_cmd_SSLSRPUnknownUserSeed(cmd_parms *cmd, void *dcfg, const char *arg);
885 const char *ssl_cmd_SSLFIPS(cmd_parms *cmd, void *dcfg, int flag);
887 /** module initialization */
888 apr_status_t ssl_init_Module(apr_pool_t *, apr_pool_t *, apr_pool_t *, server_rec *);
889 apr_status_t ssl_init_Engine(server_rec *, apr_pool_t *);
890 apr_status_t ssl_init_ConfigureServer(server_rec *, apr_pool_t *, apr_pool_t *, SSLSrvConfigRec *,
891 apr_array_header_t *);
892 apr_status_t ssl_init_CheckServers(server_rec *, apr_pool_t *);
893 int ssl_proxy_section_post_config(apr_pool_t *p, apr_pool_t *plog,
894 apr_pool_t *ptemp, server_rec *s,
895 ap_conf_vector_t *section_config);
897 *ssl_init_FindCAList(server_rec *, apr_pool_t *, const char *, const char *);
898 void ssl_init_Child(apr_pool_t *, server_rec *);
899 apr_status_t ssl_init_ModuleKill(void *data);
901 /** Apache API hooks */
902 int ssl_hook_Auth(request_rec *);
903 int ssl_hook_UserCheck(request_rec *);
904 int ssl_hook_Access(request_rec *);
905 int ssl_hook_Fixup(request_rec *);
906 int ssl_hook_ReadReq(request_rec *);
907 int ssl_hook_Upgrade(request_rec *);
908 void ssl_hook_ConfigTest(apr_pool_t *pconf, server_rec *s);
910 /** Apache authz provisders */
911 extern const authz_provider ssl_authz_provider_require_ssl;
912 extern const authz_provider ssl_authz_provider_verify_client;
914 /** OpenSSL callbacks */
915 DH *ssl_callback_TmpDH(SSL *, int, int);
916 int ssl_callback_SSLVerify(int, X509_STORE_CTX *);
917 int ssl_callback_SSLVerify_CRL(int, X509_STORE_CTX *, conn_rec *);
918 int ssl_callback_proxy_cert(SSL *ssl, X509 **x509, EVP_PKEY **pkey);
919 int ssl_callback_NewSessionCacheEntry(SSL *, SSL_SESSION *);
920 SSL_SESSION *ssl_callback_GetSessionCacheEntry(SSL *, IDCONST unsigned char *, int, int *);
921 void ssl_callback_DelSessionCacheEntry(SSL_CTX *, SSL_SESSION *);
922 void ssl_callback_Info(const SSL *, int, int);
924 int ssl_callback_ServerNameIndication(SSL *, int *, modssl_ctx_t *);
926 #ifdef HAVE_TLS_SESSION_TICKETS
927 int ssl_callback_SessionTicket(SSL *, unsigned char *, unsigned char *,
928 EVP_CIPHER_CTX *, HMAC_CTX *, int);
932 int ssl_callback_alpn_select(SSL *ssl, const unsigned char **out,
933 unsigned char *outlen, const unsigned char *in,
934 unsigned int inlen, void *arg);
937 /** Session Cache Support */
938 apr_status_t ssl_scache_init(server_rec *, apr_pool_t *);
939 void ssl_scache_status_register(apr_pool_t *p);
940 void ssl_scache_kill(server_rec *);
941 BOOL ssl_scache_store(server_rec *, IDCONST UCHAR *, int,
942 apr_time_t, SSL_SESSION *, apr_pool_t *);
943 SSL_SESSION *ssl_scache_retrieve(server_rec *, IDCONST UCHAR *, int, apr_pool_t *);
944 void ssl_scache_remove(server_rec *, IDCONST UCHAR *, int,
947 /** OCSP Stapling Support */
948 #ifdef HAVE_OCSP_STAPLING
949 const char *ssl_cmd_SSLStaplingCache(cmd_parms *, void *, const char *);
950 const char *ssl_cmd_SSLUseStapling(cmd_parms *, void *, int);
951 const char *ssl_cmd_SSLStaplingResponseTimeSkew(cmd_parms *, void *, const char *);
952 const char *ssl_cmd_SSLStaplingResponseMaxAge(cmd_parms *, void *, const char *);
953 const char *ssl_cmd_SSLStaplingStandardCacheTimeout(cmd_parms *, void *, const char *);
954 const char *ssl_cmd_SSLStaplingErrorCacheTimeout(cmd_parms *, void *, const char *);
955 const char *ssl_cmd_SSLStaplingReturnResponderErrors(cmd_parms *, void *, int);
956 const char *ssl_cmd_SSLStaplingFakeTryLater(cmd_parms *, void *, int);
957 const char *ssl_cmd_SSLStaplingResponderTimeout(cmd_parms *, void *, const char *);
958 const char *ssl_cmd_SSLStaplingForceURL(cmd_parms *, void *, const char *);
959 apr_status_t modssl_init_stapling(server_rec *, apr_pool_t *, apr_pool_t *, modssl_ctx_t *);
960 void ssl_stapling_certinfo_hash_init(apr_pool_t *);
961 int ssl_stapling_init_cert(server_rec *, apr_pool_t *, apr_pool_t *,
962 modssl_ctx_t *, X509 *);
965 int ssl_callback_SRPServerParams(SSL *, int *, void *);
969 void ssl_io_filter_init(conn_rec *, request_rec *r, SSL *);
970 void ssl_io_filter_register(apr_pool_t *);
971 long ssl_io_data_cb(BIO *, int, const char *, int, long, long);
973 /* ssl_io_buffer_fill fills the setaside buffering of the HTTP request
974 * to allow an SSL renegotiation to take place. */
975 int ssl_io_buffer_fill(request_rec *r, apr_size_t maxlen);
978 int ssl_rand_seed(server_rec *, apr_pool_t *, ssl_rsctx_t, char *);
980 /** Utility Functions */
981 char *ssl_util_vhostid(apr_pool_t *, server_rec *);
982 apr_file_t *ssl_util_ppopen(server_rec *, apr_pool_t *, const char *,
983 const char * const *);
984 void ssl_util_ppclose(server_rec *, apr_pool_t *, apr_file_t *);
985 char *ssl_util_readfilter(server_rec *, apr_pool_t *, const char *,
986 const char * const *);
987 BOOL ssl_util_path_check(ssl_pathcheck_t, const char *, apr_pool_t *);
988 #if APR_HAS_THREADS && MODSSL_USE_OPENSSL_PRE_1_1_API
989 void ssl_util_thread_setup(apr_pool_t *);
990 void ssl_util_thread_id_setup(apr_pool_t *);
992 int ssl_init_ssl_connection(conn_rec *c, request_rec *r);
994 BOOL ssl_util_vhost_matches(const char *servername, server_rec *s);
996 /** Pass Phrase Support */
997 apr_status_t ssl_load_encrypted_pkey(server_rec *, apr_pool_t *, int,
998 const char *, apr_array_header_t **);
999 /* Load private key from the configured ENGINE, returned as **pkey.
1000 * Errors logged on failure. */
1001 apr_status_t modssl_load_engine_pkey(server_rec *s, apr_pool_t *p,
1002 const char *keyid, EVP_PKEY **ppkey);
1004 /** Diffie-Hellman Parameter Support */
1005 DH *ssl_dh_GetParamFromFile(const char *);
1007 EC_GROUP *ssl_ec_GetParamFromFile(const char *);
1010 unsigned char *ssl_asn1_table_set(apr_hash_t *table,
1014 ssl_asn1_t *ssl_asn1_table_get(apr_hash_t *table,
1017 void ssl_asn1_table_unset(apr_hash_t *table,
1020 /** Mutex Support */
1021 int ssl_mutex_init(server_rec *, apr_pool_t *);
1022 int ssl_mutex_reinit(server_rec *, apr_pool_t *);
1023 int ssl_mutex_on(server_rec *);
1024 int ssl_mutex_off(server_rec *);
1026 int ssl_stapling_mutex_reinit(server_rec *, apr_pool_t *);
1028 /* mutex type names for Mutex directive */
1029 #define SSL_CACHE_MUTEX_TYPE "ssl-cache"
1030 #define SSL_STAPLING_CACHE_MUTEX_TYPE "ssl-stapling"
1031 #define SSL_STAPLING_REFRESH_MUTEX_TYPE "ssl-stapling-refresh"
1033 apr_status_t ssl_die(server_rec *);
1035 /** Logfile Support */
1036 void ssl_log_ssl_error(const char *, int, int, server_rec *);
1038 /* ssl_log_xerror, ssl_log_cxerror and ssl_log_rxerror are wrappers for the
1039 * respective ap_log_*error functions and take a certificate as an
1040 * additional argument (whose details are appended to the log message).
1041 * The other arguments are interpreted exactly as with their ap_log_*error
1043 void ssl_log_xerror(const char *file, int line, int level,
1044 apr_status_t rv, apr_pool_t *p, server_rec *s,
1045 X509 *cert, const char *format, ...)
1046 __attribute__((format(printf,8,9)));
1048 void ssl_log_cxerror(const char *file, int line, int level,
1049 apr_status_t rv, conn_rec *c, X509 *cert,
1050 const char *format, ...)
1051 __attribute__((format(printf,7,8)));
1053 void ssl_log_rxerror(const char *file, int line, int level,
1054 apr_status_t rv, request_rec *r, X509 *cert,
1055 const char *format, ...)
1056 __attribute__((format(printf,7,8)));
1058 #define SSLLOG_MARK __FILE__,__LINE__
1062 /* Register variables for the lifetime of the process pool 'p'. */
1063 void ssl_var_register(apr_pool_t *p);
1064 char *ssl_var_lookup(apr_pool_t *, server_rec *, conn_rec *, request_rec *, char *);
1065 apr_array_header_t *ssl_ext_list(apr_pool_t *p, conn_rec *c, int peer, const char *extension);
1067 void ssl_var_log_config_register(apr_pool_t *p);
1069 /* Extract SSL_*_DN_* variables into table 't' from SSL object 'ssl',
1070 * allocating from 'p': */
1071 void modssl_var_extract_dns(apr_table_t *t, SSL *ssl, apr_pool_t *p);
1073 /* Extract SSL_*_SAN_* variables (subjectAltName entries) into table 't'
1074 * from SSL object 'ssl', allocating from 'p'. */
1075 void modssl_var_extract_san_entries(apr_table_t *t, SSL *ssl, apr_pool_t *p);
1077 #ifndef OPENSSL_NO_OCSP
1078 /* Perform OCSP validation of the current cert in the given context.
1079 * Returns non-zero on success or zero on failure. On failure, the
1080 * context error code is set. */
1081 int modssl_verify_ocsp(X509_STORE_CTX *ctx, SSLSrvConfigRec *sc,
1082 server_rec *s, conn_rec *c, apr_pool_t *pool);
1084 /* OCSP helper interface; dispatches the given OCSP request to the
1085 * responder at the given URI. Returns the decoded OCSP response
1086 * object, or NULL on error (in which case, errors will have been
1087 * logged). Pool 'p' is used for temporary allocations. */
1088 OCSP_RESPONSE *modssl_dispatch_ocsp_request(const apr_uri_t *uri,
1089 apr_interval_time_t timeout,
1090 OCSP_REQUEST *request,
1091 conn_rec *c, apr_pool_t *p);
1093 /* Initialize OCSP trusted certificate list */
1094 void ssl_init_ocsp_certificates(server_rec *s, modssl_ctx_t *mctx);
1098 /* Retrieve DH parameters for given key length. Return value should
1099 * be treated as unmutable, since it is stored in process-global
1101 DH *modssl_get_dh_params(unsigned keylen);
1103 /* Returns non-zero if the request was made over SSL/TLS. If sslconn
1104 * is non-NULL and the request is using SSL/TLS, sets *sslconn to the
1105 * corresponding SSLConnRec structure for the connection. */
1106 int modssl_request_is_tls(const request_rec *r, SSLConnRec **sslconn);
1108 /* Returns non-zero if the cert/key filename should be handled through
1109 * the configure ENGINE. */
1110 int modssl_is_engine_key(const char *name);
1113 extern int ssl_running_on_valgrind;
1116 int ssl_is_challenge(conn_rec *c, const char *servername,
1117 X509 **pcert, EVP_PKEY **pkey);
1119 #endif /* SSL_PRIVATE_H */