--- /dev/null
+/* 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
+ * | | | | | | (_) | (_| | \__ \__ \ |
+ * |_| |_| |_|\___/ \__,_|___|___/___/_|
+ * |_____|
+ * ssl_engine_init.c
+ * Initialization of Servers
+ */
+ /* ``Recursive, adj.;
+ see Recursive.''
+ -- Unknown */
+#include "mod_ssl.h"
+
+/* _________________________________________________________________
+**
+** Module Initialization
+** _________________________________________________________________
+*/
+
+
+static void ssl_add_version_components(apr_pool_t *p,
+ server_rec *s)
+{
+ char *modver = ssl_var_lookup(p, s, NULL, NULL, "SSL_VERSION_INTERFACE");
+ char *libver = ssl_var_lookup(p, s, NULL, NULL, "SSL_VERSION_LIBRARY");
+ char *incver = ssl_var_lookup(p, s, NULL, NULL,
+ "SSL_VERSION_LIBRARY_INTERFACE");
+
+ ap_add_version_component(p, modver);
+ ap_add_version_component(p, libver);
+
+ ap_log_error(APLOG_MARK, APLOG_INFO, 0, s,
+ "%s compiled against Server: %s, Library: %s",
+ modver, AP_SERVER_BASEVERSION, incver);
+}
+
+
+/*
+ * Initialize SSL library
+ */
+static void ssl_init_SSLLibrary(server_rec *s)
+{
+ ap_log_error(APLOG_MARK, APLOG_INFO, 0, s,
+ "Init: Initializing %s library", SSL_LIBRARY_NAME);
+
+ SSL_load_error_strings();
+ SSL_library_init();
+ OpenSSL_add_all_algorithms(); /* Required for eg SHA256 client certs */
+}
+
+/*
+ * Handle the Temporary RSA Keys and DH Params
+ */
+
+#define MODSSL_TMP_KEY_FREE(mc, type, idx) \
+ if (mc->pTmpKeys[idx]) { \
+ type##_free((type *)mc->pTmpKeys[idx]); \
+ mc->pTmpKeys[idx] = NULL; \
+ }
+
+#define MODSSL_TMP_KEYS_FREE(mc, type) \
+ MODSSL_TMP_KEY_FREE(mc, type, SSL_TMP_KEY_##type##_512); \
+ MODSSL_TMP_KEY_FREE(mc, type, SSL_TMP_KEY_##type##_1024)
+
+static void ssl_tmp_keys_free(server_rec *s)
+{
+ SSLModConfigRec *mc = myModConfig(s);
+
+ MODSSL_TMP_KEYS_FREE(mc, RSA);
+ MODSSL_TMP_KEYS_FREE(mc, DH);
+}
+
+static int ssl_tmp_key_init_rsa(server_rec *s,
+ int bits, int idx)
+{
+ SSLModConfigRec *mc = myModConfig(s);
+
+ if (!(mc->pTmpKeys[idx] =
+ RSA_generate_key(bits, RSA_F4, NULL, NULL)))
+ {
+ ap_log_error(APLOG_MARK, APLOG_ERR, 0, s,
+ "Init: Failed to generate temporary "
+ "%d bit RSA private key", bits);
+ return !OK;
+ }
+
+ return OK;
+}
+
+static int ssl_tmp_key_init_dh(server_rec *s,
+ int bits, int idx)
+{
+ SSLModConfigRec *mc = myModConfig(s);
+
+ if (!(mc->pTmpKeys[idx] =
+ ssl_dh_GetTmpParam(bits)))
+ {
+ ap_log_error(APLOG_MARK, APLOG_ERR, 0, s,
+ "Init: Failed to generate temporary "
+ "%d bit DH parameters", bits);
+ return !OK;
+ }
+
+ return OK;
+}
+
+#define MODSSL_TMP_KEY_INIT_RSA(s, bits) \
+ ssl_tmp_key_init_rsa(s, bits, SSL_TMP_KEY_RSA_##bits)
+
+#define MODSSL_TMP_KEY_INIT_DH(s, bits) \
+ ssl_tmp_key_init_dh(s, bits, SSL_TMP_KEY_DH_##bits)
+
+static int ssl_tmp_keys_init(server_rec *s)
+{
+ ap_log_error(APLOG_MARK, APLOG_INFO, 0, s,
+ "Init: Generating temporary RSA private keys (512/1024 bits)");
+
+ if (MODSSL_TMP_KEY_INIT_RSA(s, 512) ||
+ MODSSL_TMP_KEY_INIT_RSA(s, 1024)) {
+ return !OK;
+ }
+
+ ap_log_error(APLOG_MARK, APLOG_INFO, 0, s,
+ "Init: Generating temporary DH parameters (512/1024 bits)");
+
+ if (MODSSL_TMP_KEY_INIT_DH(s, 512) ||
+ MODSSL_TMP_KEY_INIT_DH(s, 1024)) {
+ return !OK;
+ }
+
+ return OK;
+}
+
+/*
+ * Per-module initialization
+ */
+int ssl_init_Module(apr_pool_t *p, apr_pool_t *plog,
+ apr_pool_t *ptemp,
+ server_rec *base_server)
+{
+ SSLModConfigRec *mc = myModConfig(base_server);
+ SSLSrvConfigRec *sc;
+ server_rec *s;
+
+ /*
+ * Let us cleanup on restarts and exists
+ */
+ apr_pool_cleanup_register(p, base_server,
+ ssl_init_ModuleKill,
+ apr_pool_cleanup_null);
+
+ /*
+ * Any init round fixes the global config
+ */
+ ssl_config_global_create(base_server); /* just to avoid problems */
+ ssl_config_global_fix(mc);
+
+ /*
+ * try to fix the configuration and open the dedicated SSL
+ * logfile as early as possible
+ */
+ for (s = base_server; s; s = s->next) {
+ sc = mySrvConfig(s);
+
+ if (sc->server) {
+ sc->server->sc = sc;
+ }
+
+ if (sc->proxy) {
+ sc->proxy->sc = sc;
+ }
+
+ /*
+ * Create the server host:port string because we need it a lot
+ */
+ sc->vhost_id = ssl_util_vhostid(p, s);
+ sc->vhost_id_len = strlen(sc->vhost_id);
+
+ /* Fix up stuff that may not have been set */
+ if (sc->enabled == UNSET) {
+ sc->enabled = FALSE;
+ }
+
+ if (sc->proxy_enabled == UNSET) {
+ sc->proxy_enabled = FALSE;
+ }
+
+ if (sc->session_cache_timeout == UNSET) {
+ sc->session_cache_timeout = SSL_SESSION_CACHE_TIMEOUT;
+ }
+
+ if (sc->server->pphrase_dialog_type == SSL_PPTYPE_UNSET) {
+ sc->server->pphrase_dialog_type = SSL_PPTYPE_BUILTIN;
+ }
+
+ }
+
+#if APR_HAS_THREADS
+ ssl_util_thread_setup(p);
+#endif
+
+ /*
+ * SSL external crypto device ("engine") support
+ */
+#ifdef SSL_EXPERIMENTAL_ENGINE
+ ssl_init_Engine(base_server, p);
+#endif
+
+ ssl_init_SSLLibrary(base_server);
+
+ /*
+ * Seed the Pseudo Random Number Generator (PRNG)
+ * only need ptemp here; nothing inside allocated from the pool
+ * needs to live once we return from ssl_rand_seed().
+ */
+ ssl_rand_seed(base_server, ptemp, SSL_RSCTX_STARTUP, "Init: ");
+
+ /*
+ * read server private keys/public certs into memory.
+ * decrypting any encrypted keys via configured SSLPassPhraseDialogs
+ * anything that needs to live longer than ptemp needs to also survive
+ * restarts, in which case they'll live inside s->process->pool.
+ */
+ ssl_pphrase_Handle(base_server, ptemp);
+
+ if (ssl_tmp_keys_init(base_server)) {
+ return !OK;
+ }
+
+ /*
+ * initialize the mutex handling
+ */
+ if (!ssl_mutex_init(base_server, p)) {
+ return HTTP_INTERNAL_SERVER_ERROR;
+ }
+
+ /*
+ * initialize session caching
+ */
+ ssl_scache_init(base_server, p);
+
+ /*
+ * initialize servers
+ */
+ ap_log_error(APLOG_MARK, APLOG_INFO, 0, base_server,
+ "Init: Initializing (virtual) servers for SSL");
+
+ for (s = base_server; s; s = s->next) {
+ sc = mySrvConfig(s);
+ /*
+ * Either now skip this server when SSL is disabled for
+ * it or give out some information about what we're
+ * configuring.
+ */
+
+ /*
+ * Read the server certificate and key
+ */
+ ssl_init_ConfigureServer(s, p, ptemp, sc);
+ }
+
+ /*
+ * Configuration consistency checks
+ */
+ ssl_init_CheckServers(base_server, ptemp);
+
+ /*
+ * Announce mod_ssl and SSL library in HTTP Server field
+ * as ``mod_ssl/X.X.X OpenSSL/X.X.X''
+ */
+ ssl_add_version_components(p, base_server);
+
+ SSL_init_app_data2_idx(); /* for SSL_get_app_data2() at request time */
+
+ return OK;
+}
+
+/*
+ * Support for external a Crypto Device ("engine"), usually
+ * a hardware accellerator card for crypto operations.
+ */
+#ifdef SSL_EXPERIMENTAL_ENGINE
+void ssl_init_Engine(server_rec *s, apr_pool_t *p)
+{
+ SSLModConfigRec *mc = myModConfig(s);
+ ENGINE *e;
+
+ if (mc->szCryptoDevice) {
+ if (!(e = ENGINE_by_id(mc->szCryptoDevice))) {
+ ap_log_error(APLOG_MARK, APLOG_ERR, 0, s,
+ "Init: Failed to load Crypto Device API `%s'",
+ mc->szCryptoDevice);
+ ssl_log_ssl_error(APLOG_MARK, APLOG_ERR, s);
+ ssl_die();
+ }
+
+ if (strEQ(mc->szCryptoDevice, "chil")) {
+ ENGINE_ctrl(e, ENGINE_CTRL_CHIL_SET_FORKCHECK, 1, 0, 0);
+ }
+
+ if (!ENGINE_set_default(e, ENGINE_METHOD_ALL)) {
+ ap_log_error(APLOG_MARK, APLOG_ERR, 0, s,
+ "Init: Failed to enable Crypto Device API `%s'",
+ mc->szCryptoDevice);
+ ssl_log_ssl_error(APLOG_MARK, APLOG_ERR, s);
+ ssl_die();
+ }
+
+ ENGINE_free(e);
+ }
+}
+#endif
+
+static void ssl_init_server_check(server_rec *s,
+ apr_pool_t *p,
+ apr_pool_t *ptemp,
+ modssl_ctx_t *mctx)
+{
+ /*
+ * check for important parameters and the
+ * possibility that the user forgot to set them.
+ */
+ if (!mctx->pks->cert_files[0]) {
+ ap_log_error(APLOG_MARK, APLOG_ERR, 0, s,
+ "No SSL Certificate set [hint: SSLCertificateFile]");
+ ssl_die();
+ }
+
+ /*
+ * Check for problematic re-initializations
+ */
+ if (mctx->pks->certs[SSL_AIDX_RSA] ||
+ mctx->pks->certs[SSL_AIDX_DSA])
+ {
+ ap_log_error(APLOG_MARK, APLOG_ERR, 0, s,
+ "Illegal attempt to re-initialise SSL for server "
+ "(theoretically shouldn't happen!)");
+ ssl_die();
+ }
+}
+
+static void ssl_init_ctx_protocol(server_rec *s,
+ apr_pool_t *p,
+ apr_pool_t *ptemp,
+ modssl_ctx_t *mctx)
+{
+ SSL_CTX *ctx = NULL;
+ SSL_METHOD *method = NULL;
+ char *cp;
+ int protocol = mctx->protocol;
+ SSLSrvConfigRec *sc = mySrvConfig(s);
+
+ /*
+ * Create the new per-server SSL context
+ */
+ if (protocol == SSL_PROTOCOL_NONE) {
+ ap_log_error(APLOG_MARK, APLOG_ERR, 0, s,
+ "No SSL protocols available [hint: SSLProtocol]");
+ ssl_die();
+ }
+
+ cp = apr_pstrcat(p,
+ (protocol & SSL_PROTOCOL_SSLV2 ? "SSLv2, " : ""),
+ (protocol & SSL_PROTOCOL_SSLV3 ? "SSLv3, " : ""),
+ (protocol & SSL_PROTOCOL_TLSV1 ? "TLSv1, " : ""),
+ NULL);
+ cp[strlen(cp)-2] = NUL;
+
+ ap_log_error(APLOG_MARK, APLOG_DEBUG, 0, s,
+ "Creating new SSL context (protocols: %s)", cp);
+
+ if (protocol == SSL_PROTOCOL_SSLV2) {
+ method = mctx->pkp ?
+ SSLv2_client_method() : /* proxy */
+ SSLv2_server_method(); /* server */
+ ctx = SSL_CTX_new(method); /* only SSLv2 is left */
+ }
+ else {
+ method = mctx->pkp ?
+ SSLv23_client_method() : /* proxy */
+ SSLv23_server_method(); /* server */
+ ctx = SSL_CTX_new(method); /* be more flexible */
+ }
+
+ mctx->ssl_ctx = ctx;
+
+ SSL_CTX_set_options(ctx, SSL_OP_ALL);
+
+ if (!(protocol & SSL_PROTOCOL_SSLV2)) {
+ SSL_CTX_set_options(ctx, SSL_OP_NO_SSLv2);
+ }
+
+ if (!(protocol & SSL_PROTOCOL_SSLV3)) {
+ SSL_CTX_set_options(ctx, SSL_OP_NO_SSLv3);
+ }
+
+ if (!(protocol & SSL_PROTOCOL_TLSV1)) {
+ SSL_CTX_set_options(ctx, SSL_OP_NO_TLSv1);
+ }
+
+#ifdef SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION
+ if (sc->insecure_reneg == TRUE) {
+ SSL_CTX_set_options(ctx, SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION);
+ }
+#endif
+
+ SSL_CTX_set_app_data(ctx, s);
+
+ /*
+ * Configure additional context ingredients
+ */
+ SSL_CTX_set_options(ctx, SSL_OP_SINGLE_DH_USE);
+
+#ifdef SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION
+ /*
+ * Disallow a session from being resumed during a renegotiation,
+ * so that an acceptable cipher suite can be negotiated.
+ */
+ SSL_CTX_set_options(ctx, SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION);
+#endif
+}
+
+static void ssl_init_ctx_session_cache(server_rec *s,
+ apr_pool_t *p,
+ apr_pool_t *ptemp,
+ modssl_ctx_t *mctx)
+{
+ SSL_CTX *ctx = mctx->ssl_ctx;
+ SSLModConfigRec *mc = myModConfig(s);
+ long cache_mode = SSL_SESS_CACHE_OFF;
+
+ if (mc->nSessionCacheMode != SSL_SCMODE_NONE) {
+ /* SSL_SESS_CACHE_NO_INTERNAL will force OpenSSL
+ * to ignore process local-caching and
+ * to always get/set/delete sessions using mod_ssl's callbacks.
+ */
+ cache_mode = SSL_SESS_CACHE_SERVER|SSL_SESS_CACHE_NO_INTERNAL;
+ }
+
+ SSL_CTX_set_session_cache_mode(ctx, cache_mode);
+
+ SSL_CTX_sess_set_new_cb(ctx, ssl_callback_NewSessionCacheEntry);
+ SSL_CTX_sess_set_get_cb(ctx, ssl_callback_GetSessionCacheEntry);
+ SSL_CTX_sess_set_remove_cb(ctx, ssl_callback_DelSessionCacheEntry);
+}
+
+static void ssl_init_ctx_callbacks(server_rec *s,
+ apr_pool_t *p,
+ apr_pool_t *ptemp,
+ modssl_ctx_t *mctx)
+{
+ SSL_CTX *ctx = mctx->ssl_ctx;
+
+ SSL_CTX_set_tmp_rsa_callback(ctx, ssl_callback_TmpRSA);
+ SSL_CTX_set_tmp_dh_callback(ctx, ssl_callback_TmpDH);
+
+ SSL_CTX_set_info_callback(ctx, ssl_callback_Info);
+}
+
+static void ssl_init_ctx_verify(server_rec *s,
+ apr_pool_t *p,
+ apr_pool_t *ptemp,
+ modssl_ctx_t *mctx)
+{
+ SSL_CTX *ctx = mctx->ssl_ctx;
+
+ int verify = SSL_VERIFY_NONE;
+ STACK_OF(X509_NAME) *ca_list;
+
+ if (mctx->auth.verify_mode == SSL_CVERIFY_UNSET) {
+ mctx->auth.verify_mode = SSL_CVERIFY_NONE;
+ }
+
+ if (mctx->auth.verify_depth == UNSET) {
+ mctx->auth.verify_depth = 1;
+ }
+
+ /*
+ * Configure callbacks for SSL context
+ */
+ if (mctx->auth.verify_mode == SSL_CVERIFY_REQUIRE) {
+ verify |= SSL_VERIFY_PEER_STRICT;
+ }
+
+ if ((mctx->auth.verify_mode == SSL_CVERIFY_OPTIONAL) ||
+ (mctx->auth.verify_mode == SSL_CVERIFY_OPTIONAL_NO_CA))
+ {
+ verify |= SSL_VERIFY_PEER;
+ }
+
+ SSL_CTX_set_verify(ctx, verify, ssl_callback_SSLVerify);
+
+ /*
+ * Configure Client Authentication details
+ */
+ if (mctx->auth.ca_cert_file || mctx->auth.ca_cert_path) {
+ ap_log_error(APLOG_MARK, APLOG_DEBUG, 0, s,
+ "Configuring client authentication");
+
+ if (!SSL_CTX_load_verify_locations(ctx,
+ MODSSL_PCHAR_CAST mctx->auth.ca_cert_file,
+ MODSSL_PCHAR_CAST mctx->auth.ca_cert_path))
+ {
+ ap_log_error(APLOG_MARK, APLOG_ERR, 0, s,
+ "Unable to configure verify locations "
+ "for client authentication");
+ ssl_log_ssl_error(APLOG_MARK, APLOG_ERR, s);
+ ssl_die();
+ }
+
+ ca_list = ssl_init_FindCAList(s, ptemp,
+ mctx->auth.ca_cert_file,
+ mctx->auth.ca_cert_path);
+ if (!ca_list) {
+ ap_log_error(APLOG_MARK, APLOG_ERR, 0, s,
+ "Unable to determine list of available "
+ "CA certificates for client authentication");
+ ssl_die();
+ }
+
+ SSL_CTX_set_client_CA_list(ctx, (STACK *)ca_list);
+ }
+
+ /*
+ * Give a warning when no CAs were configured but client authentication
+ * should take place. This cannot work.
+ */
+ if (mctx->auth.verify_mode == SSL_CVERIFY_REQUIRE) {
+ ca_list = (STACK_OF(X509_NAME) *)SSL_CTX_get_client_CA_list(ctx);
+
+ if (sk_X509_NAME_num(ca_list) == 0) {
+ ap_log_error(APLOG_MARK, APLOG_WARNING, 0, s,
+ "Init: Oops, you want to request client "
+ "authentication, but no CAs are known for "
+ "verification!? [Hint: SSLCACertificate*]");
+ }
+ }
+}
+
+static void ssl_init_ctx_cipher_suite(server_rec *s,
+ apr_pool_t *p,
+ apr_pool_t *ptemp,
+ modssl_ctx_t *mctx)
+{
+ SSL_CTX *ctx = mctx->ssl_ctx;
+ const char *suite = mctx->auth.cipher_suite;
+
+ /*
+ * Configure SSL Cipher Suite
+ */
+ if (!suite) {
+ return;
+ }
+
+ ap_log_error(APLOG_MARK, APLOG_DEBUG, 0, s,
+ "Configuring permitted SSL ciphers [%s]",
+ suite);
+
+ if (!SSL_CTX_set_cipher_list(ctx, MODSSL_PCHAR_CAST suite)) {
+ ap_log_error(APLOG_MARK, APLOG_ERR, 0, s,
+ "Unable to configure permitted SSL ciphers");
+ ssl_log_ssl_error(APLOG_MARK, APLOG_ERR, s);
+ ssl_die();
+ }
+}
+
+static void ssl_init_ctx_crl(server_rec *s,
+ apr_pool_t *p,
+ apr_pool_t *ptemp,
+ modssl_ctx_t *mctx)
+{
+ /*
+ * Configure Certificate Revocation List (CRL) Details
+ */
+
+ if (!(mctx->crl_file || mctx->crl_path)) {
+ return;
+ }
+
+ ap_log_error(APLOG_MARK, APLOG_DEBUG, 0, s,
+ "Configuring certificate revocation facility");
+
+ mctx->crl =
+ SSL_X509_STORE_create((char *)mctx->crl_file,
+ (char *)mctx->crl_path);
+
+ if (!mctx->crl) {
+ ap_log_error(APLOG_MARK, APLOG_ERR, 0, s,
+ "Unable to configure X.509 CRL storage "
+ "for certificate revocation");
+ ssl_log_ssl_error(APLOG_MARK, APLOG_ERR, s);
+ ssl_die();
+ }
+}
+
+static void ssl_init_ctx_cert_chain(server_rec *s,
+ apr_pool_t *p,
+ apr_pool_t *ptemp,
+ modssl_ctx_t *mctx)
+{
+ BOOL skip_first = FALSE;
+ int i, n;
+ const char *chain = mctx->cert_chain;
+
+ /*
+ * Optionally configure extra server certificate chain certificates.
+ * This is usually done by OpenSSL automatically when one of the
+ * server cert issuers are found under SSLCACertificatePath or in
+ * SSLCACertificateFile. But because these are intended for client
+ * authentication it can conflict. For instance when you use a
+ * Global ID server certificate you've to send out the intermediate
+ * CA certificate, too. When you would just configure this with
+ * SSLCACertificateFile and also use client authentication mod_ssl
+ * would accept all clients also issued by this CA. Obviously this
+ * isn't what we want in this situation. So this feature here exists
+ * to allow one to explicity configure CA certificates which are
+ * used only for the server certificate chain.
+ */
+ if (!chain) {
+ return;
+ }
+
+ for (i = 0; (i < SSL_AIDX_MAX) && mctx->pks->cert_files[i]; i++) {
+ if (strEQ(mctx->pks->cert_files[i], chain)) {
+ skip_first = TRUE;
+ break;
+ }
+ }
+
+ n = SSL_CTX_use_certificate_chain(mctx->ssl_ctx,
+ (char *)chain,
+ skip_first, NULL);
+ if (n < 0) {
+ ap_log_error(APLOG_MARK, APLOG_ERR, 0, s,
+ "Failed to configure CA certificate chain!");
+ ssl_die();
+ }
+
+ ap_log_error(APLOG_MARK, APLOG_DEBUG, 0, s,
+ "Configuring server certificate chain "
+ "(%d CA certificate%s)",
+ n, n == 1 ? "" : "s");
+}
+
+static void ssl_init_ctx(server_rec *s,
+ apr_pool_t *p,
+ apr_pool_t *ptemp,
+ modssl_ctx_t *mctx)
+{
+ ssl_init_ctx_protocol(s, p, ptemp, mctx);
+
+ ssl_init_ctx_session_cache(s, p, ptemp, mctx);
+
+ ssl_init_ctx_callbacks(s, p, ptemp, mctx);
+
+ ssl_init_ctx_verify(s, p, ptemp, mctx);
+
+ ssl_init_ctx_cipher_suite(s, p, ptemp, mctx);
+
+ ssl_init_ctx_crl(s, p, ptemp, mctx);
+
+ if (mctx->pks) {
+ /* XXX: proxy support? */
+ ssl_init_ctx_cert_chain(s, p, ptemp, mctx);
+ }
+}
+
+static int ssl_server_import_cert(server_rec *s,
+ modssl_ctx_t *mctx,
+ const char *id,
+ int idx)
+{
+ SSLModConfigRec *mc = myModConfig(s);
+ ssl_asn1_t *asn1;
+ MODSSL_D2I_X509_CONST unsigned char *ptr;
+ const char *type = ssl_asn1_keystr(idx);
+ X509 *cert;
+
+ if (!(asn1 = ssl_asn1_table_get(mc->tPublicCert, id))) {
+ return FALSE;
+ }
+
+ ap_log_error(APLOG_MARK, APLOG_DEBUG, 0, s,
+ "Configuring %s server certificate", type);
+
+ ptr = asn1->cpData;
+ if (!(cert = d2i_X509(NULL, &ptr, asn1->nData))) {
+ ap_log_error(APLOG_MARK, APLOG_ERR, 0, s,
+ "Unable to import %s server certificate", type);
+ ssl_log_ssl_error(APLOG_MARK, APLOG_ERR, s);
+ ssl_die();
+ }
+
+ if (SSL_CTX_use_certificate(mctx->ssl_ctx, cert) <= 0) {
+ ap_log_error(APLOG_MARK, APLOG_ERR, 0, s,
+ "Unable to configure %s server certificate", type);
+ ssl_log_ssl_error(APLOG_MARK, APLOG_ERR, s);
+ ssl_die();
+ }
+
+ mctx->pks->certs[idx] = cert;
+
+ return TRUE;
+}
+
+static int ssl_server_import_key(server_rec *s,
+ modssl_ctx_t *mctx,
+ const char *id,
+ int idx)
+{
+ SSLModConfigRec *mc = myModConfig(s);
+ ssl_asn1_t *asn1;
+ MODSSL_D2I_PrivateKey_CONST unsigned char *ptr;
+ const char *type = ssl_asn1_keystr(idx);
+ int pkey_type = (idx == SSL_AIDX_RSA) ? EVP_PKEY_RSA : EVP_PKEY_DSA;
+ EVP_PKEY *pkey;
+
+ if (!(asn1 = ssl_asn1_table_get(mc->tPrivateKey, id))) {
+ return FALSE;
+ }
+
+ ap_log_error(APLOG_MARK, APLOG_DEBUG, 0, s,
+ "Configuring %s server private key", type);
+
+ ptr = asn1->cpData;
+ if (!(pkey = d2i_PrivateKey(pkey_type, NULL, &ptr, asn1->nData)))
+ {
+ ap_log_error(APLOG_MARK, APLOG_ERR, 0, s,
+ "Unable to import %s server private key", type);
+ ssl_log_ssl_error(APLOG_MARK, APLOG_ERR, s);
+ ssl_die();
+ }
+
+ if (SSL_CTX_use_PrivateKey(mctx->ssl_ctx, pkey) <= 0) {
+ ap_log_error(APLOG_MARK, APLOG_ERR, 0, s,
+ "Unable to configure %s server private key", type);
+ ssl_log_ssl_error(APLOG_MARK, APLOG_ERR, s);
+ ssl_die();
+ }
+
+ /*
+ * XXX: wonder if this is still needed, this is old todo doc.
+ * (see http://www.psy.uq.edu.au/~ftp/Crypto/ssleay/TODO.html)
+ */
+ if ((pkey_type == EVP_PKEY_DSA) && mctx->pks->certs[idx]) {
+ EVP_PKEY *pubkey = X509_get_pubkey(mctx->pks->certs[idx]);
+
+ if (pubkey && EVP_PKEY_missing_parameters(pubkey)) {
+ EVP_PKEY_copy_parameters(pubkey, pkey);
+ ap_log_error(APLOG_MARK, APLOG_ERR, 0, s,
+ "Copying DSA parameters from private key to certificate");
+ ssl_log_ssl_error(APLOG_MARK, APLOG_ERR, s);
+ EVP_PKEY_free(pubkey);
+ }
+ }
+
+ mctx->pks->keys[idx] = pkey;
+
+ return TRUE;
+}
+
+static void ssl_check_public_cert(server_rec *s,
+ apr_pool_t *ptemp,
+ X509 *cert,
+ int type)
+{
+ int is_ca, pathlen;
+ char *cn;
+
+ if (!cert) {
+ return;
+ }
+
+ /*
+ * Some information about the certificate(s)
+ */
+
+ if (SSL_X509_isSGC(cert)) {
+ ap_log_error(APLOG_MARK, APLOG_INFO, 0, s,
+ "%s server certificate enables "
+ "Server Gated Cryptography (SGC)",
+ ssl_asn1_keystr(type));
+ }
+
+ if (SSL_X509_getBC(cert, &is_ca, &pathlen)) {
+ if (is_ca) {
+ ap_log_error(APLOG_MARK, APLOG_WARNING, 0, s,
+ "%s server certificate is a CA certificate "
+ "(BasicConstraints: CA == TRUE !?)",
+ ssl_asn1_keystr(type));
+ }
+
+ if (pathlen > 0) {
+ ap_log_error(APLOG_MARK, APLOG_WARNING, 0, s,
+ "%s server certificate is not a leaf certificate "
+ "(BasicConstraints: pathlen == %d > 0 !?)",
+ ssl_asn1_keystr(type), pathlen);
+ }
+ }
+
+ if (SSL_X509_getCN(ptemp, cert, &cn)) {
+ int fnm_flags = FNM_PERIOD|FNM_CASE_BLIND;
+
+ if (apr_fnmatch_test(cn) &&
+ (apr_fnmatch(cn, s->server_hostname,
+ fnm_flags) == FNM_NOMATCH))
+ {
+ ap_log_error(APLOG_MARK, APLOG_WARNING, 0, s,
+ "%s server certificate wildcard CommonName (CN) `%s' "
+ "does NOT match server name!?",
+ ssl_asn1_keystr(type), cn);
+ }
+ else if (strNE(s->server_hostname, cn)) {
+ ap_log_error(APLOG_MARK, APLOG_WARNING, 0, s,
+ "%s server certificate CommonName (CN) `%s' "
+ "does NOT match server name!?",
+ ssl_asn1_keystr(type), cn);
+ }
+ }
+}
+
+static void ssl_init_server_certs(server_rec *s,
+ apr_pool_t *p,
+ apr_pool_t *ptemp,
+ modssl_ctx_t *mctx)
+{
+ const char *rsa_id, *dsa_id;
+ const char *vhost_id = mctx->sc->vhost_id;
+ int i;
+ int have_rsa, have_dsa;
+
+ rsa_id = ssl_asn1_table_keyfmt(ptemp, vhost_id, SSL_AIDX_RSA);
+ dsa_id = ssl_asn1_table_keyfmt(ptemp, vhost_id, SSL_AIDX_DSA);
+
+ have_rsa = ssl_server_import_cert(s, mctx, rsa_id, SSL_AIDX_RSA);
+ have_dsa = ssl_server_import_cert(s, mctx, dsa_id, SSL_AIDX_DSA);
+
+ if (!(have_rsa || have_dsa)) {
+ ap_log_error(APLOG_MARK, APLOG_ERR, 0, s,
+ "Oops, no RSA or DSA server certificate found?!");
+ ssl_die();
+ }
+
+ for (i = 0; i < SSL_AIDX_MAX; i++) {
+ ssl_check_public_cert(s, ptemp, mctx->pks->certs[i], i);
+ }
+
+ have_rsa = ssl_server_import_key(s, mctx, rsa_id, SSL_AIDX_RSA);
+ have_dsa = ssl_server_import_key(s, mctx, dsa_id, SSL_AIDX_DSA);
+
+ if (!(have_rsa || have_dsa)) {
+ ap_log_error(APLOG_MARK, APLOG_ERR, 0, s,
+ "Oops, no RSA or DSA server private key found?!");
+ ssl_die();
+ }
+}
+
+static void ssl_init_proxy_certs(server_rec *s,
+ apr_pool_t *p,
+ apr_pool_t *ptemp,
+ modssl_ctx_t *mctx)
+{
+ int n, ncerts = 0;
+ STACK_OF(X509_INFO) *sk;
+ modssl_pk_proxy_t *pkp = mctx->pkp;
+
+ SSL_CTX_set_client_cert_cb(mctx->ssl_ctx,
+ ssl_callback_proxy_cert);
+
+ if (!(pkp->cert_file || pkp->cert_path)) {
+ return;
+ }
+
+ sk = sk_X509_INFO_new_null();
+
+ if (pkp->cert_file) {
+ SSL_X509_INFO_load_file(ptemp, sk, pkp->cert_file);
+ }
+
+ if (pkp->cert_path) {
+ SSL_X509_INFO_load_path(ptemp, sk, pkp->cert_path);
+ }
+
+ if ((ncerts = sk_X509_INFO_num(sk)) <= 0) {
+ sk_X509_INFO_free(sk);
+ ap_log_error(APLOG_MARK, APLOG_WARNING, 0, s,
+ "no client certs found for SSL proxy");
+ return;
+ }
+
+ /* Check that all client certs have got certificates and private
+ * keys. */
+ for (n = 0; n < ncerts; n++) {
+ X509_INFO *inf = sk_X509_INFO_value(sk, n);
+
+ if (!inf->x509 || !inf->x_pkey) {
+ sk_X509_INFO_free(sk);
+ ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, s,
+ "incomplete client cert configured for SSL proxy "
+ "(missing or encrypted private key?)");
+ ssl_die();
+ return;
+ }
+ }
+
+ ap_log_error(APLOG_MARK, APLOG_DEBUG, 0, s,
+ "loaded %d client certs for SSL proxy",
+ ncerts);
+ pkp->certs = sk;
+}
+
+static void ssl_init_proxy_ctx(server_rec *s,
+ apr_pool_t *p,
+ apr_pool_t *ptemp,
+ SSLSrvConfigRec *sc)
+{
+ ssl_init_ctx(s, p, ptemp, sc->proxy);
+
+ ssl_init_proxy_certs(s, p, ptemp, sc->proxy);
+}
+
+static void ssl_init_server_ctx(server_rec *s,
+ apr_pool_t *p,
+ apr_pool_t *ptemp,
+ SSLSrvConfigRec *sc)
+{
+ ssl_init_server_check(s, p, ptemp, sc->server);
+
+ ssl_init_ctx(s, p, ptemp, sc->server);
+
+ ssl_init_server_certs(s, p, ptemp, sc->server);
+}
+
+/*
+ * Configure a particular server
+ */
+void ssl_init_ConfigureServer(server_rec *s,
+ apr_pool_t *p,
+ apr_pool_t *ptemp,
+ SSLSrvConfigRec *sc)
+{
+ if (sc->enabled) {
+ ap_log_error(APLOG_MARK, APLOG_INFO, 0, s,
+ "Configuring server for SSL protocol");
+ ssl_init_server_ctx(s, p, ptemp, sc);
+ }
+
+ if (sc->proxy_enabled) {
+ ssl_init_proxy_ctx(s, p, ptemp, sc);
+ }
+}
+
+void ssl_init_CheckServers(server_rec *base_server, apr_pool_t *p)
+{
+ server_rec *s, *ps;
+ SSLSrvConfigRec *sc;
+ apr_hash_t *table;
+ const char *key;
+ apr_ssize_t klen;
+
+ BOOL conflict = FALSE;
+
+ /*
+ * Give out warnings when a server has HTTPS configured
+ * for the HTTP port or vice versa
+ */
+ for (s = base_server; s; s = s->next) {
+ sc = mySrvConfig(s);
+
+ if (sc->enabled && (s->port == DEFAULT_HTTP_PORT)) {
+ ap_log_error(APLOG_MARK, APLOG_WARNING, 0,
+ base_server,
+ "Init: (%s) You configured HTTPS(%d) "
+ "on the standard HTTP(%d) port!",
+ ssl_util_vhostid(p, s),
+ DEFAULT_HTTPS_PORT, DEFAULT_HTTP_PORT);
+ }
+
+ if (!sc->enabled && (s->port == DEFAULT_HTTPS_PORT)) {
+ ap_log_error(APLOG_MARK, APLOG_WARNING, 0,
+ base_server,
+ "Init: (%s) You configured HTTP(%d) "
+ "on the standard HTTPS(%d) port!",
+ ssl_util_vhostid(p, s),
+ DEFAULT_HTTP_PORT, DEFAULT_HTTPS_PORT);
+ }
+ }
+
+ /*
+ * Give out warnings when more than one SSL-aware virtual server uses the
+ * same IP:port. This doesn't work because mod_ssl then will always use
+ * just the certificate/keys of one virtual host (which one cannot be said
+ * easily - but that doesn't matter here).
+ */
+ table = apr_hash_make(p);
+
+ for (s = base_server; s; s = s->next) {
+ sc = mySrvConfig(s);
+
+ if (!(sc->enabled && s->addrs)) {
+ continue;
+ }
+
+ key = apr_psprintf(p, "%pA:%u",
+ &s->addrs->host_addr, s->addrs->host_port);
+ klen = strlen(key);
+
+ if ((ps = (server_rec *)apr_hash_get(table, key, klen))) {
+ ap_log_error(APLOG_MARK, APLOG_WARNING, 0,
+ base_server,
+ "Init: SSL server IP/port conflict: "
+ "%s (%s:%d) vs. %s (%s:%d)",
+ ssl_util_vhostid(p, s),
+ (s->defn_name ? s->defn_name : "unknown"),
+ s->defn_line_number,
+ ssl_util_vhostid(p, ps),
+ (ps->defn_name ? ps->defn_name : "unknown"),
+ ps->defn_line_number);
+ conflict = TRUE;
+ continue;
+ }
+
+ apr_hash_set(table, key, klen, s);
+ }
+
+ if (conflict) {
+ ap_log_error(APLOG_MARK, APLOG_WARNING, 0, base_server,
+ "Init: You should not use name-based "
+ "virtual hosts in conjunction with SSL!!");
+ }
+}
+
+#ifdef SSLC_VERSION_NUMBER
+static int ssl_init_FindCAList_X509NameCmp(char **a, char **b)
+{
+ return(X509_NAME_cmp((void*)*a, (void*)*b));
+}
+#else
+static int ssl_init_FindCAList_X509NameCmp(X509_NAME **a, X509_NAME **b)
+{
+ return(X509_NAME_cmp(*a, *b));
+}
+#endif
+
+static void ssl_init_PushCAList(STACK_OF(X509_NAME) *ca_list,
+ server_rec *s, const char *file)
+{
+ int n;
+ STACK_OF(X509_NAME) *sk;
+
+ sk = (STACK_OF(X509_NAME) *)
+ SSL_load_client_CA_file(MODSSL_PCHAR_CAST file);
+
+ if (!sk) {
+ return;
+ }
+
+ for (n = 0; n < sk_X509_NAME_num(sk); n++) {
+ char name_buf[256];
+ X509_NAME *name = sk_X509_NAME_value(sk, n);
+
+ ap_log_error(APLOG_MARK, APLOG_DEBUG, 0, s,
+ "CA certificate: %s",
+ X509_NAME_oneline(name, name_buf, sizeof(name_buf)));
+
+ /*
+ * note that SSL_load_client_CA_file() checks for duplicates,
+ * but since we call it multiple times when reading a directory
+ * we must also check for duplicates ourselves.
+ */
+
+ if (sk_X509_NAME_find(ca_list, name) < 0) {
+ /* this will be freed when ca_list is */
+ sk_X509_NAME_push(ca_list, name);
+ }
+ else {
+ /* need to free this ourselves, else it will leak */
+ X509_NAME_free(name);
+ }
+ }
+
+ sk_X509_NAME_free(sk);
+}
+
+STACK_OF(X509_NAME) *ssl_init_FindCAList(server_rec *s,
+ apr_pool_t *ptemp,
+ const char *ca_file,
+ const char *ca_path)
+{
+ STACK_OF(X509_NAME) *ca_list;
+
+ /*
+ * Start with a empty stack/list where new
+ * entries get added in sorted order.
+ */
+ ca_list = sk_X509_NAME_new(ssl_init_FindCAList_X509NameCmp);
+
+ /*
+ * Process CA certificate bundle file
+ */
+ if (ca_file) {
+ ssl_init_PushCAList(ca_list, s, ca_file);
+ }
+
+ /*
+ * Process CA certificate path files
+ */
+ if (ca_path) {
+ apr_dir_t *dir;
+ apr_finfo_t direntry;
+ apr_int32_t finfo_flags = APR_FINFO_TYPE|APR_FINFO_NAME;
+ apr_status_t rv;
+
+ if ((rv = apr_dir_open(&dir, ca_path, ptemp)) != APR_SUCCESS) {
+ ap_log_error(APLOG_MARK, APLOG_ERR, rv, s,
+ "Failed to open SSLCACertificatePath `%s'",
+ ca_path);
+ ssl_die();
+ }
+
+ while ((apr_dir_read(&direntry, finfo_flags, dir)) == APR_SUCCESS) {
+ const char *file;
+ if (direntry.filetype == APR_DIR) {
+ continue; /* don't try to load directories */
+ }
+ file = apr_pstrcat(ptemp, ca_path, "/", direntry.name, NULL);
+ ssl_init_PushCAList(ca_list, s, file);
+ }
+
+ apr_dir_close(dir);
+ }
+
+ /*
+ * Cleanup
+ */
+ sk_X509_NAME_set_cmp_func(ca_list, NULL);
+
+ return ca_list;
+}
+
+void ssl_init_Child(apr_pool_t *p, server_rec *s)
+{
+ SSLModConfigRec *mc = myModConfig(s);
+ mc->pid = getpid(); /* only call getpid() once per-process */
+
+ /* XXX: there should be an ap_srand() function */
+ srand((unsigned int)time(NULL));
+
+ /* open the mutex lockfile */
+ ssl_mutex_reinit(s, p);
+}
+
+#define MODSSL_CFG_ITEM_FREE(func, item) \
+ if (item) { \
+ func(item); \
+ item = NULL; \
+ }
+
+static void ssl_init_ctx_cleanup(modssl_ctx_t *mctx)
+{
+ MODSSL_CFG_ITEM_FREE(X509_STORE_free, mctx->crl);
+
+ MODSSL_CFG_ITEM_FREE(SSL_CTX_free, mctx->ssl_ctx);
+}
+
+static void ssl_init_ctx_cleanup_proxy(modssl_ctx_t *mctx)
+{
+ ssl_init_ctx_cleanup(mctx);
+
+ if (mctx->pkp->certs) {
+ sk_X509_INFO_pop_free(mctx->pkp->certs, X509_INFO_free);
+ }
+}
+
+static void ssl_init_ctx_cleanup_server(modssl_ctx_t *mctx)
+{
+ int i;
+
+ ssl_init_ctx_cleanup(mctx);
+
+ for (i=0; i < SSL_AIDX_MAX; i++) {
+ MODSSL_CFG_ITEM_FREE(X509_free,
+ mctx->pks->certs[i]);
+
+ MODSSL_CFG_ITEM_FREE(EVP_PKEY_free,
+ mctx->pks->keys[i]);
+ }
+}
+
+apr_status_t ssl_init_ModuleKill(void *data)
+{
+ SSLSrvConfigRec *sc;
+ server_rec *base_server = (server_rec *)data;
+ server_rec *s;
+
+ /*
+ * Drop the session cache and mutex
+ */
+ ssl_scache_kill(base_server);
+
+ /*
+ * Destroy the temporary keys and params
+ */
+ ssl_tmp_keys_free(base_server);
+
+ /*
+ * Free the non-pool allocated structures
+ * in the per-server configurations
+ */
+ for (s = base_server; s; s = s->next) {
+ sc = mySrvConfig(s);
+
+ ssl_init_ctx_cleanup_proxy(sc->proxy);
+
+ ssl_init_ctx_cleanup_server(sc->server);
+ }
+
+ /*
+ * Try to kill the internals of the SSL library.
+ */
+ ERR_remove_state(0);
+ EVP_cleanup();
+
+ return APR_SUCCESS;
+}
+
Code Review / bottlenecks.git / blobdiff