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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 15:01:30 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 15:01:30 +0000
commit6beeb1b708550be0d4a53b272283e17e5e35fe17 (patch)
tree1ce8673d4aaa948e5554000101f46536a1e4cc29 /modules/ssl/mod_ssl.c
parentInitial commit. (diff)
downloadapache2-6beeb1b708550be0d4a53b272283e17e5e35fe17.tar.xz
apache2-6beeb1b708550be0d4a53b272283e17e5e35fe17.zip
Adding upstream version 2.4.57.upstream/2.4.57upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r--modules/ssl/mod_ssl.c775
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
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--- /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
+};