upload http

JIRA: BOTTLENECK-10

Change-Id: I7598427ff904df438ce77c2819ee48ac75ffa8da
Signed-off-by: hongbotian <hongbo.tianhongbo@huawei.com>

1 files changed, 1243 insertions, 0 deletions

diff --git a/rubbos/app/httpd-2.0.64/modules/ssl/ssl_engine_init.c b/rubbos/app/httpd-2.0.64/modules/ssl/ssl_engine_init.c
new file mode 100644
index 00000000..92c3395d
--- /dev/null
+++ b/rubbos/app/httpd-2.0.64/modules/ssl/ssl_engine_init.c
@@ -0,0 +1,1243 @@
+/* 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;
+}
+