/* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef SSL_PRIVATE_H
#define SSL_PRIVATE_H
/**
* @file ssl_private.h
* @brief Internal interfaces private to mod_ssl.
*
* @defgroup MOD_SSL_PRIVATE Private
* @ingroup MOD_SSL
* @{
*/
/** Apache headers */
#include "httpd.h"
#include "http_config.h"
#include "http_core.h"
#include "http_log.h"
#include "http_main.h"
#include "http_connection.h"
#include "http_request.h"
#include "http_protocol.h"
#include "http_vhost.h"
#include "util_script.h"
#include "util_filter.h"
#include "util_ebcdic.h"
#include "util_mutex.h"
#include "apr.h"
#include "apr_strings.h"
#define APR_WANT_STRFUNC
#define APR_WANT_MEMFUNC
#include "apr_want.h"
#include "apr_tables.h"
#include "apr_lib.h"
#include "apr_fnmatch.h"
#include "apr_strings.h"
#include "apr_global_mutex.h"
#include "apr_optional.h"
#include "ap_socache.h"
#include "mod_auth.h"
/* The #ifdef macros are only defined AFTER including the above
* therefore we cannot include these system files at the top :-(
*/
#if APR_HAVE_STDLIB_H
#include <stdlib.h>
#endif
#if APR_HAVE_SYS_TIME_H
#include <sys/time.h>
#endif
#if APR_HAVE_UNISTD_H
#include <unistd.h> /* needed for STDIN_FILENO et.al., at least on FreeBSD */
#endif
#ifndef FALSE
#define FALSE 0
#endif
#ifndef TRUE
#define TRUE !FALSE
#endif
#ifndef BOOL
#define BOOL unsigned int
#endif
#include "ap_expr.h"
/* OpenSSL headers */
#include <openssl/opensslv.h>
#if (OPENSSL_VERSION_NUMBER >= 0x10001000)
/* must be defined before including ssl.h */
#define OPENSSL_NO_SSL_INTERN
#endif
#include <openssl/ssl.h>
#include <openssl/err.h>
#include <openssl/x509.h>
#include <openssl/pem.h>
#include <openssl/crypto.h>
#include <openssl/evp.h>
#include <openssl/rand.h>
#include <openssl/x509v3.h>
#include <openssl/x509_vfy.h>
#include <openssl/ocsp.h>
/* Avoid tripping over an engine build installed globally and detected
* when the user points at an explicit non-engine flavor of OpenSSL
*/
#if defined(HAVE_OPENSSL_ENGINE_H) && defined(HAVE_ENGINE_INIT)
#include <openssl/engine.h>
#endif
#if (OPENSSL_VERSION_NUMBER < 0x0090801f)
#error mod_ssl requires OpenSSL 0.9.8a or later
#endif
/**
* ...shifting sands of OpenSSL...
* Note: when adding support for new OpenSSL features, avoid explicit
* version number checks whenever possible, and use "feature-based"
* detection instead (check for definitions of constants or functions)
*/
#if (OPENSSL_VERSION_NUMBER >= 0x10000000)
#define MODSSL_SSL_CIPHER_CONST const
#define MODSSL_SSL_METHOD_CONST const
#else
#define MODSSL_SSL_CIPHER_CONST
#define MODSSL_SSL_METHOD_CONST
#endif
#if defined(LIBRESSL_VERSION_NUMBER)
/* Missing from LibreSSL */
#if LIBRESSL_VERSION_NUMBER < 0x2060000f
#define SSL_CTRL_SET_MIN_PROTO_VERSION 123
#define SSL_CTRL_SET_MAX_PROTO_VERSION 124
#define SSL_CTX_set_min_proto_version(ctx, version) \
SSL_CTX_ctrl(ctx, SSL_CTRL_SET_MIN_PROTO_VERSION, version, NULL)
#define SSL_CTX_set_max_proto_version(ctx, version) \
SSL_CTX_ctrl(ctx, SSL_CTRL_SET_MAX_PROTO_VERSION, version, NULL)
#elif LIBRESSL_VERSION_NUMBER < 0x2070000f
/* LibreSSL before 2.7 declares OPENSSL_VERSION_NUMBER == 2.0 but does not
* include most changes from OpenSSL >= 1.1 (new functions, macros,
* deprecations, ...), so we have to work around this...
*/
#define MODSSL_USE_OPENSSL_PRE_1_1_API (1)
#endif /* LIBRESSL_VERSION_NUMBER < 0x2060000f */
#else /* defined(LIBRESSL_VERSION_NUMBER) */
#define MODSSL_USE_OPENSSL_PRE_1_1_API (OPENSSL_VERSION_NUMBER < 0x10100000L)
#endif
#if defined(OPENSSL_FIPS)
#define HAVE_FIPS
#endif
#if defined(SSL_OP_NO_TLSv1_2)
#define HAVE_TLSV1_X
#endif
#if defined(SSL_CONF_FLAG_FILE)
#define HAVE_SSL_CONF_CMD
#endif
/* session id constness */
#if MODSSL_USE_OPENSSL_PRE_1_1_API
#define IDCONST
#else
#define IDCONST const
#endif
/**
* The following features all depend on TLS extension support.
* Within this block, check again for features (not version numbers).
*/
#if !defined(OPENSSL_NO_TLSEXT) && defined(SSL_set_tlsext_host_name)
#define HAVE_TLSEXT
/* ECC: make sure we have at least 1.0.0 */
#if !defined(OPENSSL_NO_EC) && defined(TLSEXT_ECPOINTFORMAT_uncompressed)
#define HAVE_ECC
#endif
/* OCSP stapling */
#if !defined(OPENSSL_NO_OCSP) && defined(SSL_CTX_set_tlsext_status_cb)
#define HAVE_OCSP_STAPLING
/* All exist but are no longer macros since OpenSSL 1.1.0 */
#if OPENSSL_VERSION_NUMBER < 0x10100000L
/* backward compatibility with OpenSSL < 1.0 */
#ifndef sk_OPENSSL_STRING_num
#define sk_OPENSSL_STRING_num sk_num
#endif
#ifndef sk_OPENSSL_STRING_value
#define sk_OPENSSL_STRING_value sk_value
#endif
#ifndef sk_OPENSSL_STRING_pop
#define sk_OPENSSL_STRING_pop sk_pop
#endif
#endif /* if OPENSSL_VERSION_NUMBER < 0x10100000L */
#endif /* if !defined(OPENSSL_NO_OCSP) && defined(SSL_CTX_set_tlsext_status_cb) */
/* TLS session tickets */
#if defined(SSL_CTX_set_tlsext_ticket_key_cb)
#define HAVE_TLS_SESSION_TICKETS
#define TLSEXT_TICKET_KEY_LEN 48
#ifndef tlsext_tick_md
#ifdef OPENSSL_NO_SHA256
#define tlsext_tick_md EVP_sha1
#else
#define tlsext_tick_md EVP_sha256
#endif
#endif
#endif
/* Secure Remote Password */
#if !defined(OPENSSL_NO_SRP) && defined(SSL_CTRL_SET_TLS_EXT_SRP_USERNAME_CB)
#define HAVE_SRP
#include <openssl/srp.h>
#endif
/* ALPN Protocol Negotiation */
#if defined(TLSEXT_TYPE_application_layer_protocol_negotiation)
#define HAVE_TLS_ALPN
#endif
#endif /* !defined(OPENSSL_NO_TLSEXT) && defined(SSL_set_tlsext_host_name) */
#if MODSSL_USE_OPENSSL_PRE_1_1_API
#define BN_get_rfc2409_prime_768 get_rfc2409_prime_768
#define BN_get_rfc2409_prime_1024 get_rfc2409_prime_1024
#define BN_get_rfc3526_prime_1536 get_rfc3526_prime_1536
#define BN_get_rfc3526_prime_2048 get_rfc3526_prime_2048
#define BN_get_rfc3526_prime_3072 get_rfc3526_prime_3072
#define BN_get_rfc3526_prime_4096 get_rfc3526_prime_4096
#define BN_get_rfc3526_prime_6144 get_rfc3526_prime_6144
#define BN_get_rfc3526_prime_8192 get_rfc3526_prime_8192
#define BIO_set_init(x,v) (x->init=v)
#define BIO_get_data(x) (x->ptr)
#define BIO_set_data(x,v) (x->ptr=v)
#define BIO_get_shutdown(x) (x->shutdown)
#define BIO_set_shutdown(x,v) (x->shutdown=v)
#define DH_bits(x) (BN_num_bits(x->p))
#else
void init_bio_methods(void);
void free_bio_methods(void);
#endif
#if OPENSSL_VERSION_NUMBER < 0x10002000L || \
(defined(LIBRESSL_VERSION_NUMBER) && LIBRESSL_VERSION_NUMBER < 0x2070000f)
#define X509_STORE_CTX_get0_store(x) (x->ctx)
#endif
#if OPENSSL_VERSION_NUMBER < 0x10000000L
#ifndef X509_STORE_CTX_get0_current_issuer
#define X509_STORE_CTX_get0_current_issuer(x) (x->current_issuer)
#endif
#endif
/* mod_ssl headers */
#include "ssl_util_ssl.h"
APLOG_USE_MODULE(ssl);
/*
* Provide reasonable default for some defines
*/
#ifndef PFALSE
#define PFALSE ((void *)FALSE)
#endif
#ifndef PTRUE
#define PTRUE ((void *)TRUE)
#endif
#ifndef UNSET
#define UNSET (-1)
#endif
#ifndef NUL
#define NUL '\0'
#endif
#ifndef RAND_MAX
#include <limits.h>
#define RAND_MAX INT_MAX
#endif
/**
* Provide reasonable defines for some types
*/
#ifndef UCHAR
#define UCHAR unsigned char
#endif
/**
* Provide useful shorthands
*/
#define strEQ(s1,s2) (strcmp(s1,s2) == 0)
#define strNE(s1,s2) (strcmp(s1,s2) != 0)
#define strEQn(s1,s2,n) (strncmp(s1,s2,n) == 0)
#define strNEn(s1,s2,n) (strncmp(s1,s2,n) != 0)
#define strcEQ(s1,s2) (strcasecmp(s1,s2) == 0)
#define strcNE(s1,s2) (strcasecmp(s1,s2) != 0)
#define strcEQn(s1,s2,n) (strncasecmp(s1,s2,n) == 0)
#define strcNEn(s1,s2,n) (strncasecmp(s1,s2,n) != 0)
#define strIsEmpty(s) (s == NULL || s[0] == NUL)
#define myConnConfig(c) \
((SSLConnRec *)ap_get_module_config(c->conn_config, &ssl_module))
#define myConnConfigSet(c, val) \
ap_set_module_config(c->conn_config, &ssl_module, val)
#define mySrvConfig(srv) \
((SSLSrvConfigRec *)ap_get_module_config(srv->module_config, &ssl_module))
#define myDirConfig(req) \
((SSLDirConfigRec *)ap_get_module_config(req->per_dir_config, &ssl_module))
#define myCtxConfig(sslconn, sc) \
(sslconn->is_proxy ? sslconn->dc->proxy : sc->server)
#define myModConfig(srv) mySrvConfig((srv))->mc
#define mySrvFromConn(c) myConnConfig(c)->server
#define myDirConfigFromConn(c) myConnConfig(c)->dc
#define mySrvConfigFromConn(c) mySrvConfig(mySrvFromConn(c))
#define myModConfigFromConn(c) myModConfig(mySrvFromConn(c))
/**
* Defaults for the configuration
*/
#ifndef SSL_SESSION_CACHE_TIMEOUT
#define SSL_SESSION_CACHE_TIMEOUT 300
#endif
/* Default setting for per-dir reneg buffer. */
#ifndef DEFAULT_RENEG_BUFFER_SIZE
#define DEFAULT_RENEG_BUFFER_SIZE (128 * 1024)
#endif
/* Default for OCSP response validity */
#ifndef DEFAULT_OCSP_MAX_SKEW
#define DEFAULT_OCSP_MAX_SKEW (60 * 5)
#endif
/* Default timeout for OCSP queries */
#ifndef DEFAULT_OCSP_TIMEOUT
#define DEFAULT_OCSP_TIMEOUT 10
#endif
/*
* For better backwards compatibility with the SSLCertificate[Key]File
* and SSLPassPhraseDialog ("exec" type) directives in 2.4.7 and earlier
*/
#ifdef HAVE_ECC
#define CERTKEYS_IDX_MAX 2
#else
#define CERTKEYS_IDX_MAX 1
#endif
/**
* Define the SSL options
*/
#define SSL_OPT_NONE (0)
#define SSL_OPT_RELSET (1<<0)
#define SSL_OPT_STDENVVARS (1<<1)
#define SSL_OPT_EXPORTCERTDATA (1<<3)
#define SSL_OPT_FAKEBASICAUTH (1<<4)
#define SSL_OPT_STRICTREQUIRE (1<<5)
#define SSL_OPT_OPTRENEGOTIATE (1<<6)
#define SSL_OPT_LEGACYDNFORMAT (1<<7)
typedef int ssl_opt_t;
/**
* Define the SSL Protocol options
*/
#define SSL_PROTOCOL_NONE (0)
#ifndef OPENSSL_NO_SSL3
#define SSL_PROTOCOL_SSLV3 (1<<1)
#endif
#define SSL_PROTOCOL_TLSV1 (1<<2)
#ifndef OPENSSL_NO_SSL3
#define SSL_PROTOCOL_BASIC (SSL_PROTOCOL_SSLV3|SSL_PROTOCOL_TLSV1)
#else
#define SSL_PROTOCOL_BASIC (SSL_PROTOCOL_TLSV1)
#endif
#ifdef HAVE_TLSV1_X
#define SSL_PROTOCOL_TLSV1_1 (1<<3)
#define SSL_PROTOCOL_TLSV1_2 (1<<4)
#define SSL_PROTOCOL_TLSV1_3 (1<<5)
#ifdef SSL_OP_NO_TLSv1_3
#define SSL_HAVE_PROTOCOL_TLSV1_3 (1)
#define SSL_PROTOCOL_ALL (SSL_PROTOCOL_BASIC| \
SSL_PROTOCOL_TLSV1_1|SSL_PROTOCOL_TLSV1_2|SSL_PROTOCOL_TLSV1_3)
#else
#define SSL_HAVE_PROTOCOL_TLSV1_3 (0)
#define SSL_PROTOCOL_ALL (SSL_PROTOCOL_BASIC| \
SSL_PROTOCOL_TLSV1_1|SSL_PROTOCOL_TLSV1_2)
#endif
#else
#define SSL_PROTOCOL_ALL (SSL_PROTOCOL_BASIC)
#endif
#ifndef OPENSSL_NO_SSL3
#define SSL_PROTOCOL_DEFAULT (SSL_PROTOCOL_ALL & ~SSL_PROTOCOL_SSLV3)
#else
#define SSL_PROTOCOL_DEFAULT (SSL_PROTOCOL_ALL)
#endif
typedef int ssl_proto_t;
/**
* Define the SSL verify levels
*/
typedef enum {
SSL_CVERIFY_UNSET = UNSET,
SSL_CVERIFY_NONE = 0,
SSL_CVERIFY_OPTIONAL = 1,
SSL_CVERIFY_REQUIRE = 2,
SSL_CVERIFY_OPTIONAL_NO_CA = 3
} ssl_verify_t;
#define SSL_VERIFY_PEER_STRICT \
(SSL_VERIFY_PEER|SSL_VERIFY_FAIL_IF_NO_PEER_CERT)
#define ssl_verify_error_is_optional(errnum) \
((errnum == X509_V_ERR_DEPTH_ZERO_SELF_SIGNED_CERT) \
|| (errnum == X509_V_ERR_SELF_SIGNED_CERT_IN_CHAIN) \
|| (errnum == X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT_LOCALLY) \
|| (errnum == X509_V_ERR_CERT_UNTRUSTED) \
|| (errnum == X509_V_ERR_UNABLE_TO_VERIFY_LEAF_SIGNATURE))
/**
* CRL checking mask (mode | flags)
*/
typedef enum {
SSL_CRLCHECK_NONE = (0),
SSL_CRLCHECK_LEAF = (1 << 0),
SSL_CRLCHECK_CHAIN = (1 << 1),
#define SSL_CRLCHECK_FLAGS (~0x3)
SSL_CRLCHECK_NO_CRL_FOR_CERT_OK = (1 << 2)
} ssl_crlcheck_t;
/**
* OCSP checking mask (mode | flags)
*/
typedef enum {
SSL_OCSPCHECK_NONE = (0),
SSL_OCSPCHECK_LEAF = (1 << 0),
SSL_OCSPCHECK_CHAIN = (1 << 1),
SSL_OCSPCHECK_NO_OCSP_FOR_CERT_OK = (1 << 2)
} ssl_ocspcheck_t;
/**
* Define the SSL pass phrase dialog types
*/
typedef enum {
SSL_PPTYPE_UNSET = UNSET,
SSL_PPTYPE_BUILTIN = 0,
SSL_PPTYPE_FILTER = 1,
SSL_PPTYPE_PIPE = 2
} ssl_pphrase_t;
/**
* Define the Path Checking modes
*/
#define SSL_PCM_EXISTS 1
#define SSL_PCM_ISREG 2
#define SSL_PCM_ISDIR 4
#define SSL_PCM_ISNONZERO 8
typedef unsigned int ssl_pathcheck_t;
/**
* Define the SSL enabled state
*/
typedef enum {
SSL_ENABLED_UNSET = UNSET,
SSL_ENABLED_FALSE = 0,
SSL_ENABLED_TRUE = 1,
SSL_ENABLED_OPTIONAL = 3
} ssl_enabled_t;
/**
* Define the SSL requirement structure
*/
typedef struct {
const char *cpExpr;
ap_expr_info_t *mpExpr;
} ssl_require_t;
/**
* Define the SSL random number generator seeding source
*/
typedef enum {
SSL_RSCTX_STARTUP = 1,
SSL_RSCTX_CONNECT = 2
} ssl_rsctx_t;
typedef enum {
SSL_RSSRC_BUILTIN = 1,
SSL_RSSRC_FILE = 2,
SSL_RSSRC_EXEC = 3,
SSL_RSSRC_EGD = 4
} ssl_rssrc_t;
typedef struct {
ssl_rsctx_t nCtx;
ssl_rssrc_t nSrc;
char *cpPath;
int nBytes;
} ssl_randseed_t;
/**
* Define the structure of an ASN.1 anything
*/
typedef struct {
long int nData;
unsigned char *cpData;
apr_time_t source_mtime;
} ssl_asn1_t;
/**
* Define the mod_ssl per-module configuration structure
* (i.e. the global configuration for each httpd process)
*/
typedef struct SSLSrvConfigRec SSLSrvConfigRec;
typedef struct SSLDirConfigRec SSLDirConfigRec;
typedef enum {
SSL_SHUTDOWN_TYPE_UNSET,
SSL_SHUTDOWN_TYPE_STANDARD,
SSL_SHUTDOWN_TYPE_UNCLEAN,
SSL_SHUTDOWN_TYPE_ACCURATE
} ssl_shutdown_type_e;
typedef struct {
SSL *ssl;
const char *client_dn;
X509 *client_cert;
ssl_shutdown_type_e shutdown_type;
const char *verify_info;
const char *verify_error;
int verify_depth;
int is_proxy;
int disabled;
enum {
NON_SSL_OK = 0, /* is SSL request, or error handling completed */
NON_SSL_SEND_REQLINE, /* Need to send the fake request line */
NON_SSL_SEND_HDR_SEP, /* Need to send the header separator */
NON_SSL_SET_ERROR_MSG /* Need to set the error message */
} non_ssl_request;
/* Track the handshake/renegotiation state for the connection so
* that all client-initiated renegotiations can be rejected, as a
* partial fix for CVE-2009-3555. */
enum {
RENEG_INIT = 0, /* Before initial handshake */
RENEG_REJECT, /* After initial handshake; any client-initiated
* renegotiation should be rejected */
RENEG_ALLOW, /* A server-initiated renegotiation is taking
* place (as dictated by configuration) */
RENEG_ABORT /* Renegotiation initiated by client, abort the
* connection */
} reneg_state;
server_rec *server;
SSLDirConfigRec *dc;
const char *cipher_suite; /* cipher suite used in last reneg */
int service_unavailable; /* thouugh we negotiate SSL, no requests will be served */
} SSLConnRec;
/* BIG FAT WARNING: SSLModConfigRec has unusual memory lifetime: it is
* allocated out of the "process" pool and only a single such
* structure is created and used for the lifetime of the process.
* (The process pool is s->process->pool and is stored in the .pPool
* field.) Most members of this structure are likewise allocated out
* of the process pool, but notably sesscache and sesscache_context
* are not.
*
* The structure is treated as mostly immutable after a single config
* parse has completed; the post_config hook (ssl_init_Module) flips
* the bFixed flag to true and subsequent invocations of the config
* callbacks hence do nothing.
*
* This odd lifetime strategy is used so that encrypted private keys
* can be decrypted once at startup and continue to be used across
* subsequent server reloads where the interactive password prompt is
* not possible.
* It is really an ABI nightmare waiting to happen since DSOs are
* reloaded across restarts, and nothing prevents the struct type
* changing across such reloads, yet the cached structure will be
* assumed to match regardless.
*
* This should really be fixed using a smaller structure which only
* stores that which is absolutely necessary (the private keys, maybe
* the random seed), and have that structure be strictly ABI-versioned
* for safety.
*/
typedef struct {
pid_t pid;
apr_pool_t *pPool;
BOOL bFixed;
/* OpenSSL SSL_SESS_CACHE_* flags: */
long sesscache_mode;
/* The configured provider, and associated private data
* structure. */
const ap_socache_provider_t *sesscache;
ap_socache_instance_t *sesscache_context;
apr_global_mutex_t *pMutex;
apr_array_header_t *aRandSeed;
apr_hash_t *tVHostKeys;
/* A hash table of pointers to ssl_asn1_t structures. The structures
* are used to store private keys in raw DER format (serialized OpenSSL
* PrivateKey structures). The table is indexed by (vhost-id,
* index), for example the string "vhost.example.com:443:0". */
apr_hash_t *tPrivateKey;
#if defined(HAVE_OPENSSL_ENGINE_H) && defined(HAVE_ENGINE_INIT)
const char *szCryptoDevice;
#endif
#ifdef HAVE_OCSP_STAPLING
const ap_socache_provider_t *stapling_cache;
ap_socache_instance_t *stapling_cache_context;
apr_global_mutex_t *stapling_cache_mutex;
apr_global_mutex_t *stapling_refresh_mutex;
#endif
} SSLModConfigRec;
/** Structure representing configured filenames for certs and keys for
* a given vhost */
typedef struct {
/* Lists of configured certs and keys for this server */
apr_array_header_t *cert_files;
apr_array_header_t *key_files;
/** Certificates which specify the set of CA names which should be
* sent in the CertificateRequest message: */
const char *ca_name_path;
const char *ca_name_file;
/* TLS service for this server is suspended */
int service_unavailable;
} modssl_pk_server_t;
typedef struct {
/** proxy can have any number of cert/key pairs */
const char *cert_file;
const char *cert_path;
const char *ca_cert_file;
STACK_OF(X509_INFO) *certs; /* Contains End Entity certs */
STACK_OF(X509) **ca_certs; /* Contains ONLY chain certs for
* each item in certs.
* (ptr to array of ptrs) */
} modssl_pk_proxy_t;
/** stuff related to authentication that can also be per-dir */
typedef struct {
/** known/trusted CAs */
const char *ca_cert_path;
const char *ca_cert_file;
const char *cipher_suite;
/** for client or downstream server authentication */
int verify_depth;
ssl_verify_t verify_mode;
/** TLSv1.3 has its separate cipher list, separate from the
settings for older TLS protocol versions. Since which one takes
effect is a matter of negotiation, we need separate settings */
const char *tls13_ciphers;
} modssl_auth_ctx_t;
#ifdef HAVE_TLS_SESSION_TICKETS
typedef struct {
const char *file_path;
unsigned char key_name[16];
unsigned char hmac_secret[16];
unsigned char aes_key[16];
} modssl_ticket_key_t;
#endif
#ifdef HAVE_SSL_CONF_CMD
typedef struct {
const char *name;
const char *value;
} ssl_ctx_param_t;
#endif
typedef struct {
SSLSrvConfigRec *sc; /** pointer back to server config */
SSL_CTX *ssl_ctx;
/** we are one or the other */
modssl_pk_server_t *pks;
modssl_pk_proxy_t *pkp;
#ifdef HAVE_TLS_SESSION_TICKETS
modssl_ticket_key_t *ticket_key;
#endif
ssl_proto_t protocol;
int protocol_set;
/** config for handling encrypted keys */
ssl_pphrase_t pphrase_dialog_type;
const char *pphrase_dialog_path;
const char *cert_chain;
/** certificate revocation list */
const char *crl_path;
const char *crl_file;
int crl_check_mask;
#ifdef HAVE_OCSP_STAPLING
/** OCSP stapling options */
BOOL stapling_enabled;
long stapling_resptime_skew;
long stapling_resp_maxage;
int stapling_cache_timeout;
BOOL stapling_return_errors;
BOOL stapling_fake_trylater;
int stapling_errcache_timeout;
apr_interval_time_t stapling_responder_timeout;
const char *stapling_force_url;
#endif
#ifdef HAVE_SRP
char *srp_vfile;
char *srp_unknown_user_seed;
SRP_VBASE *srp_vbase;
#endif
modssl_auth_ctx_t auth;
int ocsp_mask;
BOOL ocsp_force_default; /* true if the default responder URL is
* used regardless of per-cert URL */
const char *ocsp_responder; /* default responder URL */
long ocsp_resptime_skew;
long ocsp_resp_maxage;
apr_interval_time_t ocsp_responder_timeout;
BOOL ocsp_use_request_nonce;
apr_uri_t *proxy_uri;
BOOL ocsp_noverify; /* true if skipping OCSP certification verification like openssl -noverify */
/* Declare variables for using OCSP Responder Certs for OCSP verification */
int ocsp_verify_flags; /* Flags to use when verifying OCSP response */
const char *ocsp_certs_file; /* OCSP other certificates filename */
STACK_OF(X509) *ocsp_certs; /* OCSP other certificates */
#ifdef HAVE_SSL_CONF_CMD
SSL_CONF_CTX *ssl_ctx_config; /* Configuration context */
apr_array_header_t *ssl_ctx_param; /* parameters to pass to SSL_CTX */
#endif
BOOL ssl_check_peer_cn;
BOOL ssl_check_peer_name;
BOOL ssl_check_peer_expire;
} modssl_ctx_t;
struct SSLSrvConfigRec {
SSLModConfigRec *mc;
ssl_enabled_t enabled;
const char *vhost_id;
int vhost_id_len;
int session_cache_timeout;
BOOL cipher_server_pref;
BOOL insecure_reneg;
modssl_ctx_t *server;
#ifdef HAVE_TLSEXT
ssl_enabled_t strict_sni_vhost_check;
#endif
#ifdef HAVE_FIPS
BOOL fips;
#endif
#ifndef OPENSSL_NO_COMP
BOOL compression;
#endif
BOOL session_tickets;
};
/**
* Define the mod_ssl per-directory configuration structure
* (i.e. the local configuration for all <Directory>
* and .htaccess contexts)
*/
struct SSLDirConfigRec {
BOOL bSSLRequired;
apr_array_header_t *aRequirement;
ssl_opt_t nOptions;
ssl_opt_t nOptionsAdd;
ssl_opt_t nOptionsDel;
const char *szCipherSuite;
ssl_verify_t nVerifyClient;
int nVerifyDepth;
const char *szUserName;
apr_size_t nRenegBufferSize;
modssl_ctx_t *proxy;
BOOL proxy_enabled;
BOOL proxy_post_config;
};
/**
* function prototypes
*/
/** API glue structures */
extern module AP_MODULE_DECLARE_DATA ssl_module;
/** configuration handling */
SSLModConfigRec *ssl_config_global_create(server_rec *);
void ssl_config_global_fix(SSLModConfigRec *);
BOOL ssl_config_global_isfixed(SSLModConfigRec *);
void *ssl_config_server_create(apr_pool_t *, server_rec *);
void *ssl_config_server_merge(apr_pool_t *, void *, void *);
void *ssl_config_perdir_create(apr_pool_t *, char *);
void *ssl_config_perdir_merge(apr_pool_t *, void *, void *);
void ssl_config_proxy_merge(apr_pool_t *,
SSLDirConfigRec *, SSLDirConfigRec *);
const char *ssl_cmd_SSLPassPhraseDialog(cmd_parms *, void *, const char *);
const char *ssl_cmd_SSLCryptoDevice(cmd_parms *, void *, const char *);
const char *ssl_cmd_SSLRandomSeed(cmd_parms *, void *, const char *, const char *, const char *);
const char *ssl_cmd_SSLEngine(cmd_parms *, void *, const char *);
const char *ssl_cmd_SSLCipherSuite(cmd_parms *, void *, const char *, const char *);
const char *ssl_cmd_SSLCertificateFile(cmd_parms *, void *, const char *);
const char *ssl_cmd_SSLCertificateKeyFile(cmd_parms *, void *, const char *);
const char *ssl_cmd_SSLCertificateChainFile(cmd_parms *, void *, const char *);
const char *ssl_cmd_SSLCACertificatePath(cmd_parms *, void *, const char *);
const char *ssl_cmd_SSLCACertificateFile(cmd_parms *, void *, const char *);
const char *ssl_cmd_SSLCADNRequestPath(cmd_parms *, void *, const char *);
const char *ssl_cmd_SSLCADNRequestFile(cmd_parms *, void *, const char *);
const char *ssl_cmd_SSLCARevocationPath(cmd_parms *, void *, const char *);
const char *ssl_cmd_SSLCARevocationFile(cmd_parms *, void *, const char *);
const char *ssl_cmd_SSLCARevocationCheck(cmd_parms *, void *, const char *);
const char *ssl_cmd_SSLHonorCipherOrder(cmd_parms *cmd, void *dcfg, int flag);
const char *ssl_cmd_SSLCompression(cmd_parms *, void *, int flag);
const char *ssl_cmd_SSLSessionTickets(cmd_parms *, void *, int flag);
const char *ssl_cmd_SSLVerifyClient(cmd_parms *, void *, const char *);
const char *ssl_cmd_SSLVerifyDepth(cmd_parms *, void *, const char *);
const char *ssl_cmd_SSLSessionCache(cmd_parms *, void *, const char *);
const char *ssl_cmd_SSLSessionCacheTimeout(cmd_parms *, void *, const char *);
const char *ssl_cmd_SSLProtocol(cmd_parms *, void *, const char *);
const char *ssl_cmd_SSLOptions(cmd_parms *, void *, const char *);
const char *ssl_cmd_SSLRequireSSL(cmd_parms *, void *);
const char *ssl_cmd_SSLRequire(cmd_parms *, void *, const char *);
const char *ssl_cmd_SSLUserName(cmd_parms *, void *, const char *);
const char *ssl_cmd_SSLRenegBufferSize(cmd_parms *cmd, void *dcfg, const char *arg);
const char *ssl_cmd_SSLStrictSNIVHostCheck(cmd_parms *cmd, void *dcfg, int flag);
const char *ssl_cmd_SSLInsecureRenegotiation(cmd_parms *cmd, void *dcfg, int flag);
const char *ssl_cmd_SSLProxyEngine(cmd_parms *cmd, void *dcfg, int flag);
const char *ssl_cmd_SSLProxyProtocol(cmd_parms *, void *, const char *);
const char *ssl_cmd_SSLProxyCipherSuite(cmd_parms *, void *, const char *, const char *);
const char *ssl_cmd_SSLProxyVerify(cmd_parms *, void *, const char *);
const char *ssl_cmd_SSLProxyVerifyDepth(cmd_parms *, void *, const char *);
const char *ssl_cmd_SSLProxyCACertificatePath(cmd_parms *, void *, const char *);
const char *ssl_cmd_SSLProxyCACertificateFile(cmd_parms *, void *, const char *);
const char *ssl_cmd_SSLProxyCARevocationPath(cmd_parms *, void *, const char *);
const char *ssl_cmd_SSLProxyCARevocationFile(cmd_parms *, void *, const char *);
const char *ssl_cmd_SSLProxyCARevocationCheck(cmd_parms *, void *, const char *);
const char *ssl_cmd_SSLProxyMachineCertificatePath(cmd_parms *, void *, const char *);
const char *ssl_cmd_SSLProxyMachineCertificateFile(cmd_parms *, void *, const char *);
const char *ssl_cmd_SSLProxyMachineCertificateChainFile(cmd_parms *, void *, const char *);
#ifdef HAVE_TLS_SESSION_TICKETS
const char *ssl_cmd_SSLSessionTicketKeyFile(cmd_parms *cmd, void *dcfg, const char *arg);
#endif
const char *ssl_cmd_SSLProxyCheckPeerExpire(cmd_parms *cmd, void *dcfg, int flag);
const char *ssl_cmd_SSLProxyCheckPeerCN(cmd_parms *cmd, void *dcfg, int flag);
const char *ssl_cmd_SSLProxyCheckPeerName(cmd_parms *cmd, void *dcfg, int flag);
const char *ssl_cmd_SSLOCSPOverrideResponder(cmd_parms *cmd, void *dcfg, int flag);
const char *ssl_cmd_SSLOCSPDefaultResponder(cmd_parms *cmd, void *dcfg, const char *arg);
const char *ssl_cmd_SSLOCSPResponseTimeSkew(cmd_parms *cmd, void *dcfg, const char *arg);
const char *ssl_cmd_SSLOCSPResponseMaxAge(cmd_parms *cmd, void *dcfg, const char *arg);
const char *ssl_cmd_SSLOCSPResponderTimeout(cmd_parms *cmd, void *dcfg, const char *arg);
const char *ssl_cmd_SSLOCSPUseRequestNonce(cmd_parms *cmd, void *dcfg, int flag);
const char *ssl_cmd_SSLOCSPEnable(cmd_parms *cmd, void *dcfg, const char *arg);
const char *ssl_cmd_SSLOCSPProxyURL(cmd_parms *cmd, void *dcfg, const char *arg);
/* Declare OCSP Responder Certificate Verification Directive */
const char *ssl_cmd_SSLOCSPNoVerify(cmd_parms *cmd, void *dcfg, int flag);
/* Declare OCSP Responder Certificate File Directive */
const char *ssl_cmd_SSLOCSPResponderCertificateFile(cmd_parms *cmd, void *dcfg, const char *arg);
#ifdef HAVE_SSL_CONF_CMD
const char *ssl_cmd_SSLOpenSSLConfCmd(cmd_parms *cmd, void *dcfg, const char *arg1, const char *arg2);
#endif
#ifdef HAVE_SRP
const char *ssl_cmd_SSLSRPVerifierFile(cmd_parms *cmd, void *dcfg, const char *arg);
const char *ssl_cmd_SSLSRPUnknownUserSeed(cmd_parms *cmd, void *dcfg, const char *arg);
#endif
const char *ssl_cmd_SSLFIPS(cmd_parms *cmd, void *dcfg, int flag);
/** module initialization */
apr_status_t ssl_init_Module(apr_pool_t *, apr_pool_t *, apr_pool_t *, server_rec *);
apr_status_t ssl_init_Engine(server_rec *, apr_pool_t *);
apr_status_t ssl_init_ConfigureServer(server_rec *, apr_pool_t *, apr_pool_t *, SSLSrvConfigRec *,
apr_array_header_t *);
apr_status_t ssl_init_CheckServers(server_rec *, apr_pool_t *);
int ssl_proxy_section_post_config(apr_pool_t *p, apr_pool_t *plog,
apr_pool_t *ptemp, server_rec *s,
ap_conf_vector_t *section_config);
STACK_OF(X509_NAME)
*ssl_init_FindCAList(server_rec *, apr_pool_t *, const char *, const char *);
void ssl_init_Child(apr_pool_t *, server_rec *);
apr_status_t ssl_init_ModuleKill(void *data);
/** Apache API hooks */
int ssl_hook_Auth(request_rec *);
int ssl_hook_UserCheck(request_rec *);
int ssl_hook_Access(request_rec *);
int ssl_hook_Fixup(request_rec *);
int ssl_hook_ReadReq(request_rec *);
int ssl_hook_Upgrade(request_rec *);
void ssl_hook_ConfigTest(apr_pool_t *pconf, server_rec *s);
/** Apache authz provisders */
extern const authz_provider ssl_authz_provider_require_ssl;
extern const authz_provider ssl_authz_provider_verify_client;
/** OpenSSL callbacks */
DH *ssl_callback_TmpDH(SSL *, int, int);
int ssl_callback_SSLVerify(int, X509_STORE_CTX *);
int ssl_callback_SSLVerify_CRL(int, X509_STORE_CTX *, conn_rec *);
int ssl_callback_proxy_cert(SSL *ssl, X509 **x509, EVP_PKEY **pkey);
int ssl_callback_NewSessionCacheEntry(SSL *, SSL_SESSION *);
SSL_SESSION *ssl_callback_GetSessionCacheEntry(SSL *, IDCONST unsigned char *, int, int *);
void ssl_callback_DelSessionCacheEntry(SSL_CTX *, SSL_SESSION *);
void ssl_callback_Info(const SSL *, int, int);
#ifdef HAVE_TLSEXT
int ssl_callback_ServerNameIndication(SSL *, int *, modssl_ctx_t *);
#endif
#ifdef HAVE_TLS_SESSION_TICKETS
int ssl_callback_SessionTicket(SSL *, unsigned char *, unsigned char *,
EVP_CIPHER_CTX *, HMAC_CTX *, int);
#endif
#ifdef HAVE_TLS_ALPN
int ssl_callback_alpn_select(SSL *ssl, const unsigned char **out,
unsigned char *outlen, const unsigned char *in,
unsigned int inlen, void *arg);
#endif
/** Session Cache Support */
apr_status_t ssl_scache_init(server_rec *, apr_pool_t *);
void ssl_scache_status_register(apr_pool_t *p);
void ssl_scache_kill(server_rec *);
BOOL ssl_scache_store(server_rec *, IDCONST UCHAR *, int,
apr_time_t, SSL_SESSION *, apr_pool_t *);
SSL_SESSION *ssl_scache_retrieve(server_rec *, IDCONST UCHAR *, int, apr_pool_t *);
void ssl_scache_remove(server_rec *, IDCONST UCHAR *, int,
apr_pool_t *);
/** OCSP Stapling Support */
#ifdef HAVE_OCSP_STAPLING
const char *ssl_cmd_SSLStaplingCache(cmd_parms *, void *, const char *);
const char *ssl_cmd_SSLUseStapling(cmd_parms *, void *, int);
const char *ssl_cmd_SSLStaplingResponseTimeSkew(cmd_parms *, void *, const char *);
const char *ssl_cmd_SSLStaplingResponseMaxAge(cmd_parms *, void *, const char *);
const char *ssl_cmd_SSLStaplingStandardCacheTimeout(cmd_parms *, void *, const char *);
const char *ssl_cmd_SSLStaplingErrorCacheTimeout(cmd_parms *, void *, const char *);
const char *ssl_cmd_SSLStaplingReturnResponderErrors(cmd_parms *, void *, int);
const char *ssl_cmd_SSLStaplingFakeTryLater(cmd_parms *, void *, int);
const char *ssl_cmd_SSLStaplingResponderTimeout(cmd_parms *, void *, const char *);
const char *ssl_cmd_SSLStaplingForceURL(cmd_parms *, void *, const char *);
apr_status_t modssl_init_stapling(server_rec *, apr_pool_t *, apr_pool_t *, modssl_ctx_t *);
void ssl_stapling_certinfo_hash_init(apr_pool_t *);
int ssl_stapling_init_cert(server_rec *, apr_pool_t *, apr_pool_t *,
modssl_ctx_t *, X509 *);
#endif
#ifdef HAVE_SRP
int ssl_callback_SRPServerParams(SSL *, int *, void *);
#endif
/** I/O */
void ssl_io_filter_init(conn_rec *, request_rec *r, SSL *);
void ssl_io_filter_register(apr_pool_t *);
long ssl_io_data_cb(BIO *, int, const char *, int, long, long);
/* ssl_io_buffer_fill fills the setaside buffering of the HTTP request
* to allow an SSL renegotiation to take place. */
int ssl_io_buffer_fill(request_rec *r, apr_size_t maxlen);
/** PRNG */
int ssl_rand_seed(server_rec *, apr_pool_t *, ssl_rsctx_t, char *);
/** Utility Functions */
char *ssl_util_vhostid(apr_pool_t *, server_rec *);
apr_file_t *ssl_util_ppopen(server_rec *, apr_pool_t *, const char *,
const char * const *);
void ssl_util_ppclose(server_rec *, apr_pool_t *, apr_file_t *);
char *ssl_util_readfilter(server_rec *, apr_pool_t *, const char *,
const char * const *);
BOOL ssl_util_path_check(ssl_pathcheck_t, const char *, apr_pool_t *);
#if APR_HAS_THREADS && MODSSL_USE_OPENSSL_PRE_1_1_API
void ssl_util_thread_setup(apr_pool_t *);
void ssl_util_thread_id_setup(apr_pool_t *);
#endif
int ssl_init_ssl_connection(conn_rec *c, request_rec *r);
BOOL ssl_util_vhost_matches(const char *servername, server_rec *s);
/** Pass Phrase Support */
apr_status_t ssl_load_encrypted_pkey(server_rec *, apr_pool_t *, int,
const char *, apr_array_header_t **);
/* Load public and/or private key from the configured ENGINE. Private
* key returned as *pkey. certid can be NULL, in which case *pubkey
* is not altered. Errors logged on failure. */
apr_status_t modssl_load_engine_keypair(server_rec *s, apr_pool_t *p,
const char *vhostid,
const char *certid, const char *keyid,
X509 **pubkey, EVP_PKEY **privkey);
/** Diffie-Hellman Parameter Support */
DH *ssl_dh_GetParamFromFile(const char *);
#ifdef HAVE_ECC
EC_GROUP *ssl_ec_GetParamFromFile(const char *);
#endif
/* Store the EVP_PKEY key (serialized into DER) in the hash table with
* key, returning the ssl_asn1_t structure pointer. */
ssl_asn1_t *ssl_asn1_table_set(apr_hash_t *table, const char *key,
EVP_PKEY *pkey);
/* Retrieve the ssl_asn1_t structure with given key from the hash. */
ssl_asn1_t *ssl_asn1_table_get(apr_hash_t *table, const char *key);
/* Remove and free the ssl_asn1_t structure with given key. */
void ssl_asn1_table_unset(apr_hash_t *table, const char *key);
/** Mutex Support */
int ssl_mutex_init(server_rec *, apr_pool_t *);
int ssl_mutex_reinit(server_rec *, apr_pool_t *);
int ssl_mutex_on(server_rec *);
int ssl_mutex_off(server_rec *);
int ssl_stapling_mutex_reinit(server_rec *, apr_pool_t *);
/* mutex type names for Mutex directive */
#define SSL_CACHE_MUTEX_TYPE "ssl-cache"
#define SSL_STAPLING_CACHE_MUTEX_TYPE "ssl-stapling"
#define SSL_STAPLING_REFRESH_MUTEX_TYPE "ssl-stapling-refresh"
apr_status_t ssl_die(server_rec *);
/** Logfile Support */
void ssl_log_ssl_error(const char *, int, int, server_rec *);
/* ssl_log_xerror, ssl_log_cxerror and ssl_log_rxerror are wrappers for the
* respective ap_log_*error functions and take a certificate as an
* additional argument (whose details are appended to the log message).
* The other arguments are interpreted exactly as with their ap_log_*error
* counterparts. */
void ssl_log_xerror(const char *file, int line, int level,
apr_status_t rv, apr_pool_t *p, server_rec *s,
X509 *cert, const char *format, ...)
__attribute__((format(printf,8,9)));
void ssl_log_cxerror(const char *file, int line, int level,
apr_status_t rv, conn_rec *c, X509 *cert,
const char *format, ...)
__attribute__((format(printf,7,8)));
void ssl_log_rxerror(const char *file, int line, int level,
apr_status_t rv, request_rec *r, X509 *cert,
const char *format, ...)
__attribute__((format(printf,7,8)));
#define SSLLOG_MARK __FILE__,__LINE__
/** Variables */
/* Register variables for the lifetime of the process pool 'p'. */
void ssl_var_register(apr_pool_t *p);
char *ssl_var_lookup(apr_pool_t *, server_rec *, conn_rec *, request_rec *, char *);
apr_array_header_t *ssl_ext_list(apr_pool_t *p, conn_rec *c, int peer, const char *extension);
void ssl_var_log_config_register(apr_pool_t *p);
/* Extract SSL_*_DN_* variables into table 't' from SSL object 'ssl',
* allocating from 'p': */
void modssl_var_extract_dns(apr_table_t *t, SSL *ssl, apr_pool_t *p);
/* Extract SSL_*_SAN_* variables (subjectAltName entries) into table 't'
* from SSL object 'ssl', allocating from 'p'. */
void modssl_var_extract_san_entries(apr_table_t *t, SSL *ssl, apr_pool_t *p);
#ifndef OPENSSL_NO_OCSP
/* Perform OCSP validation of the current cert in the given context.
* Returns non-zero on success or zero on failure. On failure, the
* context error code is set. */
int modssl_verify_ocsp(X509_STORE_CTX *ctx, SSLSrvConfigRec *sc,
server_rec *s, conn_rec *c, apr_pool_t *pool);
/* OCSP helper interface; dispatches the given OCSP request to the
* responder at the given URI. Returns the decoded OCSP response
* object, or NULL on error (in which case, errors will have been
* logged). Pool 'p' is used for temporary allocations. */
OCSP_RESPONSE *modssl_dispatch_ocsp_request(const apr_uri_t *uri,
apr_interval_time_t timeout,
OCSP_REQUEST *request,
conn_rec *c, apr_pool_t *p);
/* Initialize OCSP trusted certificate list */
void ssl_init_ocsp_certificates(server_rec *s, modssl_ctx_t *mctx);
#endif
/* Retrieve DH parameters for given key length. Return value should
* be treated as unmutable, since it is stored in process-global
* memory. */
DH *modssl_get_dh_params(unsigned keylen);
int ssl_is_challenge(conn_rec *c, const char *servername,
X509 **pcert, EVP_PKEY **pkey);
/* Returns non-zero if the cert/key filename should be handled through
* the configured ENGINE. */
int modssl_is_engine_id(const char *name);
#endif /* SSL_PRIVATE_H */
/** @} */