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Diffstat (limited to '')
| -rw-r--r-- | modules/ssl/mod_ssl.c | 775 |
1 files changed, 775 insertions, 0 deletions
diff --git a/modules/ssl/mod_ssl.c b/modules/ssl/mod_ssl.c new file mode 100644 index 0000000..5b8c4d5 --- /dev/null +++ b/modules/ssl/mod_ssl.c @@ -0,0 +1,775 @@ +/* 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. + */ + +/* _ _ + * _ __ ___ ___ __| | ___ ___| | mod_ssl + * | '_ ` _ \ / _ \ / _` | / __/ __| | Apache Interface to OpenSSL + * | | | | | | (_) | (_| | \__ \__ \ | + * |_| |_| |_|\___/ \__,_|___|___/___/_| + * |_____| + * mod_ssl.c + * Apache API interface structures + */ + +#include "ssl_private.h" +#include "mod_ssl.h" +#include "mod_ssl_openssl.h" +#include "util_md5.h" +#include "util_mutex.h" +#include "ap_provider.h" +#include "http_config.h" + +#include "mod_proxy.h" /* for proxy_hook_section_post_config() */ + +#include <assert.h> + +static int modssl_running_statically = 0; + +APR_IMPLEMENT_OPTIONAL_HOOK_RUN_ALL(ssl, SSL, int, pre_handshake, + (conn_rec *c,SSL *ssl,int is_proxy), + (c,ssl,is_proxy), OK, DECLINED); + +/* + * the table of configuration directives we provide + */ + +#define SSL_CMD_ALL(name, args, desc) \ + AP_INIT_##args("SSL"#name, ssl_cmd_SSL##name, \ + NULL, RSRC_CONF|OR_AUTHCFG, desc), + +#define SSL_CMD_SRV(name, args, desc) \ + AP_INIT_##args("SSL"#name, ssl_cmd_SSL##name, \ + NULL, RSRC_CONF, desc), + +#define SSL_CMD_PXY(name, args, desc) \ + AP_INIT_##args("SSL"#name, ssl_cmd_SSL##name, \ + NULL, RSRC_CONF|PROXY_CONF, desc), + +#define SSL_CMD_DIR(name, type, args, desc) \ + AP_INIT_##args("SSL"#name, ssl_cmd_SSL##name, \ + NULL, OR_##type, desc), + +#define AP_END_CMD { NULL } + +static const command_rec ssl_config_cmds[] = { + /* + * Global (main-server) context configuration directives + */ + SSL_CMD_SRV(PassPhraseDialog, TAKE1, + "SSL dialog mechanism for the pass phrase query " + "('builtin', '|/path/to/pipe_program', " + "or 'exec:/path/to/cgi_program')") + SSL_CMD_SRV(SessionCache, TAKE1, + "SSL Session Cache storage " + "('none', 'nonenotnull', 'dbm:/path/to/file')") +#if defined(HAVE_OPENSSL_ENGINE_H) && defined(HAVE_ENGINE_INIT) + SSL_CMD_SRV(CryptoDevice, TAKE1, + "SSL external Crypto Device usage " + "('builtin', '...')") +#endif + SSL_CMD_SRV(RandomSeed, TAKE23, + "SSL Pseudo Random Number Generator (PRNG) seeding source " + "('startup|connect builtin|file:/path|exec:/path [bytes]')") + + /* + * Per-server context configuration directives + */ + SSL_CMD_SRV(Engine, TAKE1, + "SSL switch for the protocol engine " + "('on', 'off')") + SSL_CMD_SRV(FIPS, FLAG, + "Enable FIPS-140 mode " + "(`on', `off')") + SSL_CMD_ALL(CipherSuite, TAKE12, + "Colon-delimited list of permitted SSL Ciphers, optional preceded " + "by protocol identifier ('XXX:...:XXX' - see manual)") + SSL_CMD_SRV(CertificateFile, TAKE1, + "SSL Server Certificate file " + "('/path/to/file' - PEM or DER encoded)") + SSL_CMD_SRV(CertificateKeyFile, TAKE1, + "SSL Server Private Key file " + "('/path/to/file' - PEM or DER encoded)") + SSL_CMD_SRV(CertificateChainFile, TAKE1, + "SSL Server CA Certificate Chain file " + "('/path/to/file' - PEM encoded)") +#ifdef HAVE_TLS_SESSION_TICKETS + SSL_CMD_SRV(SessionTicketKeyFile, TAKE1, + "TLS session ticket encryption/decryption key file (RFC 5077) " + "('/path/to/file' - file with 48 bytes of random data)") +#endif + SSL_CMD_ALL(CACertificatePath, TAKE1, + "SSL CA Certificate path " + "('/path/to/dir' - contains PEM encoded files)") + SSL_CMD_ALL(CACertificateFile, TAKE1, + "SSL CA Certificate file " + "('/path/to/file' - PEM encoded)") + SSL_CMD_SRV(CADNRequestPath, TAKE1, + "SSL CA Distinguished Name path " + "('/path/to/dir' - symlink hashes to PEM of acceptable CA names to request)") + SSL_CMD_SRV(CADNRequestFile, TAKE1, + "SSL CA Distinguished Name file " + "('/path/to/file' - PEM encoded to derive acceptable CA names to request)") + SSL_CMD_SRV(CARevocationPath, TAKE1, + "SSL CA Certificate Revocation List (CRL) path " + "('/path/to/dir' - contains PEM encoded files)") + SSL_CMD_SRV(CARevocationFile, TAKE1, + "SSL CA Certificate Revocation List (CRL) file " + "('/path/to/file' - PEM encoded)") + SSL_CMD_SRV(CARevocationCheck, RAW_ARGS, + "SSL CA Certificate Revocation List (CRL) checking mode") + SSL_CMD_ALL(VerifyClient, TAKE1, + "SSL Client verify type " + "('none', 'optional', 'require', 'optional_no_ca')") + SSL_CMD_ALL(VerifyDepth, TAKE1, + "SSL Client verify depth " + "('N' - number of intermediate certificates)") + SSL_CMD_SRV(SessionCacheTimeout, TAKE1, + "SSL Session Cache object lifetime " + "('N' - number of seconds)") +#ifdef OPENSSL_NO_SSL3 +#define SSLv3_PROTO_PREFIX "" +#else +#define SSLv3_PROTO_PREFIX "SSLv3|" +#endif +#ifdef HAVE_TLSV1_X +#define SSL_PROTOCOLS SSLv3_PROTO_PREFIX "TLSv1|TLSv1.1|TLSv1.2" +#else +#define SSL_PROTOCOLS SSLv3_PROTO_PREFIX "TLSv1" +#endif + SSL_CMD_SRV(Protocol, RAW_ARGS, + "Enable or disable various SSL protocols " + "('[+-][" SSL_PROTOCOLS "] ...' - see manual)") + SSL_CMD_SRV(HonorCipherOrder, FLAG, + "Use the server's cipher ordering preference") + SSL_CMD_SRV(Compression, FLAG, + "Enable SSL level compression " + "(`on', `off')") + SSL_CMD_SRV(SessionTickets, FLAG, + "Enable or disable TLS session tickets" + "(`on', `off')") + SSL_CMD_SRV(InsecureRenegotiation, FLAG, + "Enable support for insecure renegotiation") + SSL_CMD_ALL(UserName, TAKE1, + "Set user name to SSL variable value") + SSL_CMD_SRV(StrictSNIVHostCheck, FLAG, + "Strict SNI virtual host checking") + +#ifdef HAVE_SRP + SSL_CMD_SRV(SRPVerifierFile, TAKE1, + "SRP verifier file " + "('/path/to/file' - created by srptool)") + SSL_CMD_SRV(SRPUnknownUserSeed, TAKE1, + "SRP seed for unknown users (to avoid leaking a user's existence) " + "('some secret text')") +#endif + + /* + * Proxy configuration for remote SSL connections + */ + SSL_CMD_PXY(ProxyEngine, FLAG, + "SSL switch for the proxy protocol engine " + "('on', 'off')") + SSL_CMD_PXY(ProxyProtocol, RAW_ARGS, + "SSL Proxy: enable or disable SSL protocol flavors " + "('[+-][" SSL_PROTOCOLS "] ...' - see manual)") + SSL_CMD_PXY(ProxyCipherSuite, TAKE12, + "SSL Proxy: colon-delimited list of permitted SSL ciphers " + ", optionally preceded by protocol specifier ('XXX:...:XXX' - see manual)") + SSL_CMD_PXY(ProxyVerify, TAKE1, + "SSL Proxy: whether to verify the remote certificate " + "('on' or 'off')") + SSL_CMD_PXY(ProxyVerifyDepth, TAKE1, + "SSL Proxy: maximum certificate verification depth " + "('N' - number of intermediate certificates)") + SSL_CMD_PXY(ProxyCACertificateFile, TAKE1, + "SSL Proxy: file containing server certificates " + "('/path/to/file' - PEM encoded certificates)") + SSL_CMD_PXY(ProxyCACertificatePath, TAKE1, + "SSL Proxy: directory containing server certificates " + "('/path/to/dir' - contains PEM encoded certificates)") + SSL_CMD_PXY(ProxyCARevocationPath, TAKE1, + "SSL Proxy: CA Certificate Revocation List (CRL) path " + "('/path/to/dir' - contains PEM encoded files)") + SSL_CMD_PXY(ProxyCARevocationFile, TAKE1, + "SSL Proxy: CA Certificate Revocation List (CRL) file " + "('/path/to/file' - PEM encoded)") + SSL_CMD_PXY(ProxyCARevocationCheck, RAW_ARGS, + "SSL Proxy: CA Certificate Revocation List (CRL) checking mode") + SSL_CMD_PXY(ProxyMachineCertificateFile, TAKE1, + "SSL Proxy: file containing client certificates " + "('/path/to/file' - PEM encoded certificates)") + SSL_CMD_PXY(ProxyMachineCertificatePath, TAKE1, + "SSL Proxy: directory containing client certificates " + "('/path/to/dir' - contains PEM encoded certificates)") + SSL_CMD_PXY(ProxyMachineCertificateChainFile, TAKE1, + "SSL Proxy: file containing issuing certificates " + "of the client certificate " + "(`/path/to/file' - PEM encoded certificates)") + SSL_CMD_PXY(ProxyCheckPeerExpire, FLAG, + "SSL Proxy: check the peer certificate's expiration date") + SSL_CMD_PXY(ProxyCheckPeerCN, FLAG, + "SSL Proxy: check the peer certificate's CN") + SSL_CMD_PXY(ProxyCheckPeerName, FLAG, + "SSL Proxy: check the peer certificate's name " + "(must be present in subjectAltName extension or CN") + + /* + * Per-directory context configuration directives + */ + SSL_CMD_DIR(Options, OPTIONS, RAW_ARGS, + "Set one or more options to configure the SSL engine" + "('[+-]option[=value] ...' - see manual)") + SSL_CMD_DIR(RequireSSL, AUTHCFG, NO_ARGS, + "Require the SSL protocol for the per-directory context " + "(no arguments)") + SSL_CMD_DIR(Require, AUTHCFG, RAW_ARGS, + "Require a boolean expression to evaluate to true for granting access" + "(arbitrary complex boolean expression - see manual)") + SSL_CMD_DIR(RenegBufferSize, AUTHCFG, TAKE1, + "Configure the amount of memory that will be used for buffering the " + "request body if a per-location SSL renegotiation is required due to " + "changed access control requirements") + + SSL_CMD_SRV(OCSPEnable, RAW_ARGS, + "Enable use of OCSP to verify certificate revocation mode ('on', 'leaf', 'off')") + SSL_CMD_SRV(OCSPDefaultResponder, TAKE1, + "URL of the default OCSP Responder") + SSL_CMD_SRV(OCSPOverrideResponder, FLAG, + "Force use of the default responder URL ('on', 'off')") + SSL_CMD_SRV(OCSPResponseTimeSkew, TAKE1, + "Maximum time difference in OCSP responses") + SSL_CMD_SRV(OCSPResponseMaxAge, TAKE1, + "Maximum age of OCSP responses") + SSL_CMD_SRV(OCSPResponderTimeout, TAKE1, + "OCSP responder query timeout") + SSL_CMD_SRV(OCSPUseRequestNonce, FLAG, + "Whether OCSP queries use a nonce or not ('on', 'off')") + SSL_CMD_SRV(OCSPProxyURL, TAKE1, + "Proxy URL to use for OCSP requests") + +/* Define OCSP Responder Certificate Verification Directive */ + SSL_CMD_SRV(OCSPNoVerify, FLAG, + "Do not verify OCSP Responder certificate ('on', 'off')") +/* Define OCSP Responder File Configuration Directive */ + SSL_CMD_SRV(OCSPResponderCertificateFile, TAKE1, + "Trusted OCSP responder certificates" + "(`/path/to/file' - PEM encoded certificates)") + +#ifdef HAVE_OCSP_STAPLING + /* + * OCSP Stapling options + */ + SSL_CMD_SRV(StaplingCache, TAKE1, + "SSL Stapling Response Cache storage " + "(`dbm:/path/to/file')") + SSL_CMD_SRV(UseStapling, FLAG, + "SSL switch for the OCSP Stapling protocol " "(`on', `off')") + SSL_CMD_SRV(StaplingResponseTimeSkew, TAKE1, + "SSL stapling option for maximum time difference in OCSP responses") + SSL_CMD_SRV(StaplingResponderTimeout, TAKE1, + "SSL stapling option for OCSP responder timeout") + SSL_CMD_SRV(StaplingResponseMaxAge, TAKE1, + "SSL stapling option for maximum age of OCSP responses") + SSL_CMD_SRV(StaplingStandardCacheTimeout, TAKE1, + "SSL stapling option for normal OCSP Response Cache Lifetime") + SSL_CMD_SRV(StaplingReturnResponderErrors, FLAG, + "SSL stapling switch to return Status Errors Back to Client" + "(`on', `off')") + SSL_CMD_SRV(StaplingFakeTryLater, FLAG, + "SSL stapling switch to send tryLater response to client on error " + "(`on', `off')") + SSL_CMD_SRV(StaplingErrorCacheTimeout, TAKE1, + "SSL stapling option for OCSP Response Error Cache Lifetime") + SSL_CMD_SRV(StaplingForceURL, TAKE1, + "SSL stapling option to Force the OCSP Stapling URL") +#endif + +#ifdef HAVE_SSL_CONF_CMD + SSL_CMD_SRV(OpenSSLConfCmd, TAKE2, + "OpenSSL configuration command") +#endif + + /* Deprecated directives. */ + AP_INIT_RAW_ARGS("SSLLog", ap_set_deprecated, NULL, OR_ALL, + "SSLLog directive is no longer supported - use ErrorLog."), + AP_INIT_RAW_ARGS("SSLLogLevel", ap_set_deprecated, NULL, OR_ALL, + "SSLLogLevel directive is no longer supported - use LogLevel."), + + AP_END_CMD +}; + +/* + * the various processing hooks + */ +static int modssl_is_prelinked(void) +{ + apr_size_t i = 0; + const module *mod; + while ((mod = ap_prelinked_modules[i++])) { + if (strcmp(mod->name, "mod_ssl.c") == 0) { + return 1; + } + } + return 0; +} + +static apr_status_t ssl_cleanup_pre_config(void *data) +{ +#if HAVE_OPENSSL_INIT_SSL || (OPENSSL_VERSION_NUMBER >= 0x10100000L && \ + !defined(LIBRESSL_VERSION_NUMBER)) + /* Openssl v1.1+ handles all termination automatically from + * OPENSSL_init_ssl(). Do nothing in this case. + */ + +#else + /* Termination below is for legacy Openssl versions v1.0.x and + * older. + */ + + /* Corresponds to OBJ_create()s */ + OBJ_cleanup(); + /* Corresponds to OPENSSL_load_builtin_modules() */ + CONF_modules_free(); + /* Corresponds to SSL_library_init: */ + EVP_cleanup(); +#if HAVE_ENGINE_LOAD_BUILTIN_ENGINES + ENGINE_cleanup(); +#endif +#if OPENSSL_VERSION_NUMBER >= 0x1000200fL +#ifndef OPENSSL_NO_COMP + SSL_COMP_free_compression_methods(); +#endif +#endif + + /* Usually needed per thread, but this parent process is single-threaded */ +#if MODSSL_USE_OPENSSL_PRE_1_1_API +#if OPENSSL_VERSION_NUMBER >= 0x1000000fL + ERR_remove_thread_state(NULL); +#else + ERR_remove_state(0); +#endif +#endif + + /* Don't call ERR_free_strings in earlier versions, ERR_load_*_strings only + * actually loaded the error strings once per process due to static + * variable abuse in OpenSSL. */ +#if (OPENSSL_VERSION_NUMBER >= 0x00090805f) + ERR_free_strings(); +#endif + + /* Also don't call CRYPTO_cleanup_all_ex_data when linked statically here; + * any registered ex_data indices may have been cached in static variables + * in OpenSSL; removing them may cause havoc. Notably, with OpenSSL + * versions >= 0.9.8f, COMP_CTX cleanups would not be run, which + * could result in a per-connection memory leak (!). */ + if (!modssl_running_statically) { + CRYPTO_cleanup_all_ex_data(); + } +#endif + + /* + * TODO: determine somewhere we can safely shove out diagnostics + * (when enabled) at this late stage in the game: + * CRYPTO_mem_leaks_fp(stderr); + */ + + return APR_SUCCESS; +} + +static int ssl_hook_pre_config(apr_pool_t *pconf, + apr_pool_t *plog, + apr_pool_t *ptemp) +{ + modssl_running_statically = modssl_is_prelinked(); + +#if HAVE_OPENSSL_INIT_SSL || (OPENSSL_VERSION_NUMBER >= 0x10100000L && \ + !defined(LIBRESSL_VERSION_NUMBER)) + /* Openssl v1.1+ handles all initialisation automatically, apart + * from hints as to how we want to use the library. + * + * We tell openssl we want to include engine support. + */ + OPENSSL_init_ssl(OPENSSL_INIT_ENGINE_ALL_BUILTIN, NULL); + +#else + /* Configuration below is for legacy versions Openssl v1.0 and + * older. + */ + +#if APR_HAS_THREADS && MODSSL_USE_OPENSSL_PRE_1_1_API + ssl_util_thread_id_setup(pconf); +#endif +#if MODSSL_USE_OPENSSL_PRE_1_1_API || defined(LIBRESSL_VERSION_NUMBER) + (void)CRYPTO_malloc_init(); +#else + OPENSSL_malloc_init(); +#endif + ERR_load_crypto_strings(); + SSL_load_error_strings(); + SSL_library_init(); +#if HAVE_ENGINE_LOAD_BUILTIN_ENGINES + ENGINE_load_builtin_engines(); +#endif + OpenSSL_add_all_algorithms(); + OPENSSL_load_builtin_modules(); +#endif + + if (OBJ_txt2nid("id-on-dnsSRV") == NID_undef) { + (void)OBJ_create("1.3.6.1.5.5.7.8.7", "id-on-dnsSRV", + "SRVName otherName form"); + } + + /* Start w/o errors (e.g. OBJ_txt2nid() above) */ + ERR_clear_error(); + + /* + * Let us cleanup the ssl library when the module is unloaded + */ + apr_pool_cleanup_register(pconf, NULL, ssl_cleanup_pre_config, + apr_pool_cleanup_null); + + /* Register us to handle mod_log_config %c/%x variables */ + ssl_var_log_config_register(pconf); + + /* Register to handle mod_status status page generation */ + ssl_scache_status_register(pconf); + + /* Register mutex type names so they can be configured with Mutex */ + ap_mutex_register(pconf, SSL_CACHE_MUTEX_TYPE, NULL, APR_LOCK_DEFAULT, 0); +#ifdef HAVE_OCSP_STAPLING + ap_mutex_register(pconf, SSL_STAPLING_CACHE_MUTEX_TYPE, NULL, + APR_LOCK_DEFAULT, 0); + ap_mutex_register(pconf, SSL_STAPLING_REFRESH_MUTEX_TYPE, NULL, + APR_LOCK_DEFAULT, 0); +#endif + + return OK; +} + +static SSLConnRec *ssl_init_connection_ctx(conn_rec *c, + ap_conf_vector_t *per_dir_config, + int reinit) +{ + SSLConnRec *sslconn = myConnConfig(c); + int need_setup = 0; + + /* mod_proxy's (r->)per_dir_config has the lifetime of the request, thus + * it uses ssl_engine_set() to reset sslconn->dc when reusing SSL backend + * connections, so we must fall through here. But in the case where we are + * called from ssl_init_ssl_connection() with no per_dir_config (which also + * includes mod_proxy's later run_pre_connection call), sslconn->dc should + * be preserved if it's already set. + */ + if (!sslconn) { + sslconn = apr_pcalloc(c->pool, sizeof(*sslconn)); + need_setup = 1; + } + else if (!reinit) { + return sslconn; + } + + /* Reinit dc in any case because it may be r->per_dir_config scoped + * and thus a caller like mod_proxy needs to update it per request. + */ + if (per_dir_config) { + sslconn->dc = ap_get_module_config(per_dir_config, &ssl_module); + } + else { + sslconn->dc = ap_get_module_config(c->base_server->lookup_defaults, + &ssl_module); + } + + if (need_setup) { + sslconn->server = c->base_server; + sslconn->verify_depth = UNSET; + if (c->outgoing) { + sslconn->cipher_suite = sslconn->dc->proxy->auth.cipher_suite; + } + else { + SSLSrvConfigRec *sc = mySrvConfig(c->base_server); + sslconn->cipher_suite = sc->server->auth.cipher_suite; + } + + myConnConfigSet(c, sslconn); + } + + return sslconn; +} + +static int ssl_engine_status(conn_rec *c, SSLConnRec *sslconn) +{ + if (c->master) { + return DECLINED; + } + if (sslconn) { + /* This connection has already been configured. Check what applies. */ + if (sslconn->disabled) { + return SUSPENDED; + } + if (c->outgoing) { + if (!sslconn->dc->proxy_enabled) { + return DECLINED; + } + } + else { + if (mySrvConfig(sslconn->server)->enabled != SSL_ENABLED_TRUE) { + return DECLINED; + } + } + } + else { + /* we decline by default for outgoing connections and for incoming + * where the base_server is not enabled. */ + if (c->outgoing || mySrvConfig(c->base_server)->enabled != SSL_ENABLED_TRUE) { + return DECLINED; + } + } + return OK; +} + +static int ssl_hook_ssl_bind_outgoing(conn_rec *c, + ap_conf_vector_t *per_dir_config, + int enable_ssl) +{ + SSLConnRec *sslconn; + int status; + + sslconn = ssl_init_connection_ctx(c, per_dir_config, 1); + if (sslconn->ssl) { + /* we are already bound to this connection. We have rebound + * or removed the reference to a previous per_dir_config, + * there is nothing more to do. */ + return OK; + } + + status = ssl_engine_status(c, sslconn); + if (enable_ssl) { + if (status != OK) { + SSLSrvConfigRec *sc = mySrvConfig(sslconn->server); + sslconn->disabled = 1; + ap_log_cerror(APLOG_MARK, APLOG_DEBUG, 0, c, APLOGNO(10272) + "SSL Proxy requested for %s but not enabled for us.", + sc->vhost_id); + } + else { + sslconn->disabled = 0; + return OK; + } + } + else { + sslconn->disabled = 1; + } + return DECLINED; +} + +int ssl_init_ssl_connection(conn_rec *c, request_rec *r) +{ + SSLSrvConfigRec *sc; + SSL *ssl; + SSLConnRec *sslconn; + char *vhost_md5; + int rc; + modssl_ctx_t *mctx; + server_rec *server; + + /* + * Create or retrieve SSL context + */ + sslconn = ssl_init_connection_ctx(c, r ? r->per_dir_config : NULL, 0); + server = sslconn->server; + sc = mySrvConfig(server); + + /* + * Seed the Pseudo Random Number Generator (PRNG) + */ + ssl_rand_seed(server, c->pool, SSL_RSCTX_CONNECT, + c->outgoing ? "Proxy: " : "Server: "); + + mctx = myConnCtxConfig(c, sc); + + /* + * Create a new SSL connection with the configured server SSL context and + * attach this to the socket. Additionally we register this attachment + * so we can detach later. + */ + if (!(sslconn->ssl = ssl = SSL_new(mctx->ssl_ctx))) { + ap_log_cerror(APLOG_MARK, APLOG_ERR, 0, c, APLOGNO(01962) + "Unable to create a new SSL connection from the SSL " + "context"); + ssl_log_ssl_error(SSLLOG_MARK, APLOG_ERR, server); + + c->aborted = 1; + + return DECLINED; /* XXX */ + } + + rc = ssl_run_pre_handshake(c, ssl, c->outgoing ? 1 : 0); + if (rc != OK && rc != DECLINED) { + return rc; + } + + vhost_md5 = ap_md5_binary(c->pool, (unsigned char *)sc->vhost_id, + sc->vhost_id_len); + + if (!SSL_set_session_id_context(ssl, (unsigned char *)vhost_md5, + APR_MD5_DIGESTSIZE*2)) + { + ap_log_cerror(APLOG_MARK, APLOG_ERR, 0, c, APLOGNO(01963) + "Unable to set session id context to '%s'", vhost_md5); + ssl_log_ssl_error(SSLLOG_MARK, APLOG_ERR, server); + + c->aborted = 1; + + return DECLINED; /* XXX */ + } + + SSL_set_app_data(ssl, c); + modssl_set_app_data2(ssl, NULL); /* will be request_rec */ + + SSL_set_verify_result(ssl, X509_V_OK); + + ssl_io_filter_init(c, r, ssl); + + return APR_SUCCESS; +} + +static const char *ssl_hook_http_scheme(const request_rec *r) +{ + return modssl_request_is_tls(r, NULL) ? "https" : NULL; +} + +static apr_port_t ssl_hook_default_port(const request_rec *r) +{ + return modssl_request_is_tls(r, NULL) ? 443 : 0; +} + +static int ssl_hook_pre_connection(conn_rec *c, void *csd) +{ + SSLSrvConfigRec *sc; + SSLConnRec *sslconn = myConnConfig(c); + + /* + * Immediately stop processing if SSL is disabled for this connection + */ + if (ssl_engine_status(c, sslconn) != OK) { + return DECLINED; + } + + if (sslconn) { + sc = mySrvConfig(sslconn->server); + } + else { + sc = mySrvConfig(c->base_server); + } + + /* + * Remember the connection information for + * later access inside callback functions + */ + + ap_log_cerror(APLOG_MARK, APLOG_INFO, 0, c, APLOGNO(01964) + "Connection to child %ld established " + "(server %s)", c->id, sc->vhost_id); + + return ssl_init_ssl_connection(c, NULL); +} + +static int ssl_hook_process_connection(conn_rec* c) +{ + SSLConnRec *sslconn = myConnConfig(c); + + if (sslconn && !sslconn->disabled) { + /* On an active SSL connection, let the input filters initialize + * themselves which triggers the handshake, which again triggers + * all kinds of useful things such as SNI and ALPN. + */ + apr_bucket_brigade* temp; + + temp = apr_brigade_create(c->pool, c->bucket_alloc); + ap_get_brigade(c->input_filters, temp, + AP_MODE_INIT, APR_BLOCK_READ, 0); + apr_brigade_destroy(temp); + } + + return DECLINED; +} + +/* + * the module registration phase + */ + +static void ssl_register_hooks(apr_pool_t *p) +{ + /* ssl_hook_ReadReq needs to use the BrowserMatch settings so must + * run after mod_setenvif's post_read_request hook. */ + static const char *pre_prr[] = { "mod_setenvif.c", NULL }; + /* The ssl_init_Module post_config hook should run before mod_proxy's + * for the ssl proxy main configs to be merged with vhosts' before being + * themselves merged with mod_proxy's in proxy_hook_section_post_config. + */ + static const char *b_pc[] = { "mod_proxy.c", NULL}; + + + ssl_io_filter_register(p); + + ap_hook_pre_connection(ssl_hook_pre_connection,NULL,NULL, APR_HOOK_MIDDLE); + ap_hook_process_connection(ssl_hook_process_connection, + NULL, NULL, APR_HOOK_MIDDLE); + ap_hook_test_config (ssl_hook_ConfigTest, NULL,NULL, APR_HOOK_MIDDLE); + ap_hook_post_config (ssl_init_Module, NULL,b_pc, APR_HOOK_MIDDLE); + ap_hook_http_scheme (ssl_hook_http_scheme, NULL,NULL, APR_HOOK_MIDDLE); + ap_hook_default_port (ssl_hook_default_port, NULL,NULL, APR_HOOK_MIDDLE); + ap_hook_pre_config (ssl_hook_pre_config, NULL,NULL, APR_HOOK_MIDDLE); + ap_hook_child_init (ssl_init_Child, NULL,NULL, APR_HOOK_MIDDLE); + ap_hook_check_authn (ssl_hook_UserCheck, NULL,NULL, APR_HOOK_FIRST, + AP_AUTH_INTERNAL_PER_CONF); + ap_hook_fixups (ssl_hook_Fixup, NULL,NULL, APR_HOOK_MIDDLE); + ap_hook_check_access (ssl_hook_Access, NULL,NULL, APR_HOOK_MIDDLE, + AP_AUTH_INTERNAL_PER_CONF); + ap_hook_check_authz (ssl_hook_Auth, NULL,NULL, APR_HOOK_MIDDLE, + AP_AUTH_INTERNAL_PER_CONF); + ap_hook_post_read_request(ssl_hook_ReadReq, pre_prr,NULL, APR_HOOK_MIDDLE); + + APR_OPTIONAL_HOOK(proxy, section_post_config, + ssl_proxy_section_post_config, NULL, NULL, + APR_HOOK_MIDDLE); + + ssl_var_register(p); + ap_hook_ssl_bind_outgoing (ssl_hook_ssl_bind_outgoing, NULL, NULL, APR_HOOK_MIDDLE); + + ap_register_auth_provider(p, AUTHZ_PROVIDER_GROUP, "ssl", + AUTHZ_PROVIDER_VERSION, + &ssl_authz_provider_require_ssl, + AP_AUTH_INTERNAL_PER_CONF); + + ap_register_auth_provider(p, AUTHZ_PROVIDER_GROUP, "ssl-verify-client", + AUTHZ_PROVIDER_VERSION, + &ssl_authz_provider_verify_client, + AP_AUTH_INTERNAL_PER_CONF); +} + +module AP_MODULE_DECLARE_DATA ssl_module = { + STANDARD20_MODULE_STUFF, + ssl_config_perdir_create, /* create per-dir config structures */ + ssl_config_perdir_merge, /* merge per-dir config structures */ + ssl_config_server_create, /* create per-server config structures */ + ssl_config_server_merge, /* merge per-server config structures */ + ssl_config_cmds, /* table of configuration directives */ + ssl_register_hooks /* register hooks */ +#if defined(AP_MODULE_HAS_FLAGS) + ,AP_MODULE_FLAG_ALWAYS_MERGE /* flags */ +#endif +}; |