diff options
Diffstat (limited to 'modules/ssl/ssl_engine_init.c')
| -rw-r--r-- | modules/ssl/ssl_engine_init.c | 1090 |
1 files changed, 1090 insertions, 0 deletions
diff --git a/modules/ssl/ssl_engine_init.c b/modules/ssl/ssl_engine_init.c new file mode 100644 index 0000000000..6a27c4af4d --- /dev/null +++ b/modules/ssl/ssl_engine_init.c @@ -0,0 +1,1090 @@ +/* _ _ +** _ __ ___ ___ __| | ___ ___| | mod_ssl +** | '_ ` _ \ / _ \ / _` | / __/ __| | Apache Interface to OpenSSL +** | | | | | | (_) | (_| | \__ \__ \ | www.modssl.org +** |_| |_| |_|\___/ \__,_|___|___/___/_| ftp.modssl.org +** |_____| +** ssl_engine_init.c +** Initialization of Servers +*/ + +/* ==================================================================== + * Copyright (c) 1998-2001 Ralf S. Engelschall. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following + * disclaimer in the documentation and/or other materials + * provided with the distribution. + * + * 3. All advertising materials mentioning features or use of this + * software must display the following acknowledgment: + * "This product includes software developed by + * Ralf S. Engelschall <rse@engelschall.com> for use in the + * mod_ssl project (http://www.modssl.org/)." + * + * 4. The names "mod_ssl" must not be used to endorse or promote + * products derived from this software without prior written + * permission. For written permission, please contact + * rse@engelschall.com. + * + * 5. Products derived from this software may not be called "mod_ssl" + * nor may "mod_ssl" appear in their names without prior + * written permission of Ralf S. Engelschall. + * + * 6. Redistributions of any form whatsoever must retain the following + * acknowledgment: + * "This product includes software developed by + * Ralf S. Engelschall <rse@engelschall.com> for use in the + * mod_ssl project (http://www.modssl.org/)." + * + * THIS SOFTWARE IS PROVIDED BY RALF S. ENGELSCHALL ``AS IS'' AND ANY + * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR + * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL RALF S. ENGELSCHALL OR + * HIS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT + * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, + * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED + * OF THE POSSIBILITY OF SUCH DAMAGE. + * ==================================================================== + */ + +/* ==================================================================== + * Copyright (c) 1995-1999 Ben Laurie. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * + * 3. All advertising materials mentioning features or use of this + * software must display the following acknowledgment: + * "This product includes software developed by Ben Laurie + * for use in the Apache-SSL HTTP server project." + * + * 4. The name "Apache-SSL Server" must not be used to + * endorse or promote products derived from this software without + * prior written permission. + * + * 5. Redistributions of any form whatsoever must retain the following + * acknowledgment: + * "This product includes software developed by Ben Laurie + * for use in the Apache-SSL HTTP server project." + * + * THIS SOFTWARE IS PROVIDED BY BEN LAURIE ``AS IS'' AND ANY + * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR + * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL BEN LAURIE OR + * HIS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT + * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, + * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED + * OF THE POSSIBILITY OF SUCH DAMAGE. + * ==================================================================== + */ + /* ``Recursive, adj.; + see Recursive.'' + -- Unknown */ +#include "mod_ssl.h" + + +/* _________________________________________________________________ +** +** Module Initialization +** _________________________________________________________________ +*/ + +/* + * Per-module initialization + */ +void ssl_init_Module(server_rec *s, pool *p) +{ + SSLModConfigRec *mc = myModConfig(); + SSLSrvConfigRec *sc; + server_rec *s2; + char *cp; + + mc->nInitCount++; + + /* + * Let us cleanup on restarts and exists + */ + ap_register_cleanup(p, s, ssl_init_ModuleKill, ssl_init_ChildKill); + + /* + * Any init round fixes the global config + */ + ssl_config_global_create(); /* just to avoid problems */ + ssl_config_global_fix(); + + /* + * try to fix the configuration and open the dedicated SSL + * logfile as early as possible + */ + for (s2 = s; s2 != NULL; s2 = s2->next) { + sc = mySrvConfig(s2); + + /* Fix up stuff that may not have been set */ + if (sc->bEnabled == UNSET) + sc->bEnabled = FALSE; + if (sc->nVerifyClient == SSL_CVERIFY_UNSET) + sc->nVerifyClient = SSL_CVERIFY_NONE; + if (sc->nVerifyDepth == UNSET) + sc->nVerifyDepth = 1; +#ifdef SSL_EXPERIMENTAL_PROXY + if (sc->nProxyVerifyDepth == UNSET) + sc->nProxyVerifyDepth = 1; +#endif + if (sc->nSessionCacheTimeout == UNSET) + sc->nSessionCacheTimeout = SSL_SESSION_CACHE_TIMEOUT; + if (sc->nPassPhraseDialogType == SSL_PPTYPE_UNSET) + sc->nPassPhraseDialogType = SSL_PPTYPE_BUILTIN; + + /* Open the dedicated SSL logfile */ + ssl_log_open(s, s2, p); + } + + /* + * Identification + */ + if (mc->nInitCount == 1) { + ssl_log(s, SSL_LOG_INFO, "Server: %s, Interface: %s, Library: %s", + SERVER_BASEVERSION, + ssl_var_lookup(p, NULL, NULL, NULL, "SSL_VERSION_INTERFACE"), + ssl_var_lookup(p, NULL, NULL, NULL, "SSL_VERSION_LIBRARY")); +#ifdef WIN32 + ssl_log(s, SSL_LOG_WARN, "You are using mod_ssl under Win32. " + "This combination is *NOT* officially supported. " + "Use it at your own risk!"); +#endif + } + + /* + * Initialization round information + */ + if (mc->nInitCount == 1) + ssl_log(s, SSL_LOG_INFO, "Init: 1st startup round (still not detached)"); + else if (mc->nInitCount == 2) + ssl_log(s, SSL_LOG_INFO, "Init: 2nd startup round (already detached)"); + else + ssl_log(s, SSL_LOG_INFO, "Init: %d%s restart round (already detached)", + mc->nInitCount-2, (mc->nInitCount-2) == 1 ? "st" : "nd"); + +#ifdef SSL_VENDOR + ap_hook_use("ap::mod_ssl::vendor::init_module", + AP_HOOK_SIG3(void,ptr,ptr), AP_HOOK_ALL, s, p); +#endif + + /* + * The initialization phase inside the Apache API is totally bogus. + * We actually have three non-trivial problems: + * + * 1. Under Unix the API does a 2-round initialization of modules while + * under Win32 it doesn't. This means we have to make sure that at + * least the pass phrase dialog doesn't occur twice. We overcome this + * problem by using a counter (mc->nInitCount) which has to + * survive the init rounds. + * + * 2. Between the first and the second round Apache detaches from + * the terminal under Unix. This means that our pass phrase dialog + * _has_ to be done in the first round and _cannot_ be done in the + * second round. + * + * 3. When Dynamic Shared Object (DSO) mechanism is used under Unix the + * module segment (code & data) gets unloaded and re-loaded between + * the first and the second round. This means no global data survives + * between first and the second init round. We overcome this by using + * an entry ("ssl_module") inside the ap_global_ctx. + * + * The situation as a table: + * + * Unix/static Unix/DSO Win32 Action Required + * (-DSHARED_MODULE) (-DWIN32) + * ----------- ----------------- --------- ----------------------------------- + * - load module - - + * init init init SSL library init, Pass Phrase Dialog + * detach detach - - + * - reload module - - + * init init - SSL library init, mod_ssl init + * + * Ok, now try to solve this totally ugly situation... + */ + +#ifdef SHARED_MODULE + ssl_log(s, SSL_LOG_INFO, "Init: %snitializing %s library", + mc->nInitCount == 1 ? "I" : "Rei", SSL_LIBRARY_NAME); + ssl_init_SSLLibrary(); +#else + if (mc->nInitCount <= 2) { + ssl_log(s, SSL_LOG_INFO, "Init: %snitializing %s library", + mc->nInitCount == 1 ? "I" : "Rei", SSL_LIBRARY_NAME); + ssl_init_SSLLibrary(); + } +#endif + if (mc->nInitCount == 1) { + ssl_pphrase_Handle(s, p); + ssl_init_TmpKeysHandle(SSL_TKP_GEN, s, p); +#ifndef WIN32 + return; +#endif + } + + /* + * SSL external crypto device ("engine") support + */ +#ifdef SSL_EXPERIMENTAL_ENGINE + ssl_init_Engine(s, p); +#endif + + /* + * Warn the user that he should use the session cache. + * But we can operate without it, of course. + */ + if (mc->nSessionCacheMode == SSL_SCMODE_UNSET) { + ssl_log(s, SSL_LOG_WARN, + "Init: Session Cache is not configured [hint: SSLSessionCache]"); + mc->nSessionCacheMode = SSL_SCMODE_NONE; + } + + /* + * initialize the mutex handling and session caching + */ + ssl_mutex_init(s, p); + ssl_scache_init(s, p); + + /* + * Seed the Pseudo Random Number Generator (PRNG) + */ + ssl_rand_seed(s, p, SSL_RSCTX_STARTUP, "Init: "); + + /* + * allocate the temporary RSA keys and DH params + */ + ssl_init_TmpKeysHandle(SSL_TKP_ALLOC, s, p); + + /* + * initialize servers + */ + ssl_log(s, SSL_LOG_INFO, "Init: Initializing (virtual) servers for SSL"); + for (s2 = s; s2 != NULL; s2 = s2->next) { + sc = mySrvConfig(s2); + /* + * Either now skip this server when SSL is disabled for + * it or give out some information about what we're + * configuring. + */ + if (!sc->bEnabled) + continue; + ssl_log(s2, SSL_LOG_INFO, + "Init: Configuring server %s for SSL protocol", + ssl_util_vhostid(p, s2)); + + /* + * Read the server certificate and key + */ + ssl_init_ConfigureServer(s2, p, sc); + } + + /* + * Configuration consistency checks + */ + ssl_init_CheckServers(s, p); + + /* + * Announce mod_ssl and SSL library in HTTP Server field + * as ``mod_ssl/X.X.X OpenSSL/X.X.X'' + */ + if ((cp = ssl_var_lookup(p, NULL, NULL, NULL, "SSL_VERSION_PRODUCT")) != NULL && cp[0] != NUL) + ap_add_version_component(cp); + ap_add_version_component(ssl_var_lookup(p, NULL, NULL, NULL, "SSL_VERSION_INTERFACE")); + ap_add_version_component(ssl_var_lookup(p, NULL, NULL, NULL, "SSL_VERSION_LIBRARY")); + + return; +} + +/* + * Initialize SSL library (also already needed for the pass phrase dialog) + */ +void ssl_init_SSLLibrary(void) +{ +#ifdef WIN32 + CRYPTO_malloc_init(); +#endif + SSL_load_error_strings(); + SSL_library_init(); + ssl_util_thread_setup(); + X509V3_add_standard_extensions(); + return; +} + +/* + * 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, pool *p) +{ + SSLModConfigRec *mc = myModConfig(); + ENGINE *e; + + if (mc->szCryptoDevice != NULL) { + if ((e = ENGINE_by_id(mc->szCryptoDevice)) == NULL) { + ssl_log(s, SSL_LOG_ERROR, "Init: Failed to load Crypto Device API `%s'", + mc->szCryptoDevice); + 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)) { + ssl_log(s, SSL_LOG_ERROR, "Init: Failed to enable Crypto Device API `%s'", + mc->szCryptoDevice); + ssl_die(); + } + ENGINE_free(e); + } + return; +} +#endif + +/* + * Handle the Temporary RSA Keys and DH Params + */ +void ssl_init_TmpKeysHandle(int action, server_rec *s, pool *p) +{ + SSLModConfigRec *mc = myModConfig(); + ssl_asn1_t *asn1; + unsigned char *ucp; + RSA *rsa; + DH *dh; + + /* Generate Keys and Params */ + if (action == SSL_TKP_GEN) { + + /* seed PRNG */ + ssl_rand_seed(s, p, SSL_RSCTX_STARTUP, "Init: "); + + /* generate 512 bit RSA key */ + ssl_log(s, SSL_LOG_INFO, "Init: Generating temporary RSA private keys (512/1024 bits)"); + if ((rsa = RSA_generate_key(512, RSA_F4, NULL, NULL)) == NULL) { + ssl_log(s, SSL_LOG_ERROR|SSL_ADD_SSLERR, + "Init: Failed to generate temporary 512 bit RSA private key"); + ssl_die(); + } + asn1 = (ssl_asn1_t *)ssl_ds_table_push(mc->tTmpKeys, "RSA:512"); + asn1->nData = i2d_RSAPrivateKey(rsa, NULL); + asn1->cpData = ap_palloc(mc->pPool, asn1->nData); + ucp = asn1->cpData; i2d_RSAPrivateKey(rsa, &ucp); /* 2nd arg increments */ + RSA_free(rsa); + + /* generate 1024 bit RSA key */ + if ((rsa = RSA_generate_key(1024, RSA_F4, NULL, NULL)) == NULL) { + ssl_log(s, SSL_LOG_ERROR|SSL_ADD_SSLERR, + "Init: Failed to generate temporary 1024 bit RSA private key"); + ssl_die(); + } + asn1 = (ssl_asn1_t *)ssl_ds_table_push(mc->tTmpKeys, "RSA:1024"); + asn1->nData = i2d_RSAPrivateKey(rsa, NULL); + asn1->cpData = ap_palloc(mc->pPool, asn1->nData); + ucp = asn1->cpData; i2d_RSAPrivateKey(rsa, &ucp); /* 2nd arg increments */ + RSA_free(rsa); + + ssl_log(s, SSL_LOG_INFO, "Init: Configuring temporary DH parameters (512/1024 bits)"); + + /* import 512 bit DH param */ + if ((dh = ssl_dh_GetTmpParam(512)) == NULL) { + ssl_log(s, SSL_LOG_ERROR, "Init: Failed to import temporary 512 bit DH parameters"); + ssl_die(); + } + asn1 = (ssl_asn1_t *)ssl_ds_table_push(mc->tTmpKeys, "DH:512"); + asn1->nData = i2d_DHparams(dh, NULL); + asn1->cpData = ap_palloc(mc->pPool, asn1->nData); + ucp = asn1->cpData; i2d_DHparams(dh, &ucp); /* 2nd arg increments */ + /* no need to free dh, it's static */ + + /* import 1024 bit DH param */ + if ((dh = ssl_dh_GetTmpParam(1024)) == NULL) { + ssl_log(s, SSL_LOG_ERROR, "Init: Failed to import temporary 1024 bit DH parameters"); + ssl_die(); + } + asn1 = (ssl_asn1_t *)ssl_ds_table_push(mc->tTmpKeys, "DH:1024"); + asn1->nData = i2d_DHparams(dh, NULL); + asn1->cpData = ap_palloc(mc->pPool, asn1->nData); + ucp = asn1->cpData; i2d_DHparams(dh, &ucp); /* 2nd arg increments */ + /* no need to free dh, it's static */ + } + + /* Allocate Keys and Params */ + else if (action == SSL_TKP_ALLOC) { + + ssl_log(s, SSL_LOG_INFO, "Init: Configuring temporary RSA private keys (512/1024 bits)"); + + /* allocate 512 bit RSA key */ + if ((asn1 = (ssl_asn1_t *)ssl_ds_table_get(mc->tTmpKeys, "RSA:512")) != NULL) { + ucp = asn1->cpData; + if ((mc->pTmpKeys[SSL_TKPIDX_RSA512] = +#if SSL_LIBRARY_VERSION >= 0x00907000 + (void *)d2i_RSAPrivateKey(NULL, (const unsigned char **)&ucp, asn1->nData)) == NULL) { +#else + (void *)d2i_RSAPrivateKey(NULL, &ucp, asn1->nData)) == NULL) { +#endif + ssl_log(s, SSL_LOG_ERROR, "Init: Failed to load temporary 512 bit RSA private key"); + ssl_die(); + } + } + + /* allocate 1024 bit RSA key */ + if ((asn1 = (ssl_asn1_t *)ssl_ds_table_get(mc->tTmpKeys, "RSA:1024")) != NULL) { + ucp = asn1->cpData; + if ((mc->pTmpKeys[SSL_TKPIDX_RSA1024] = +#if SSL_LIBRARY_VERSION >= 0x00907000 + (void *)d2i_RSAPrivateKey(NULL, (const unsigned char **)&ucp, asn1->nData)) == NULL) { +#else + (void *)d2i_RSAPrivateKey(NULL, &ucp, asn1->nData)) == NULL) { +#endif + ssl_log(s, SSL_LOG_ERROR, "Init: Failed to load temporary 1024 bit RSA private key"); + ssl_die(); + } + } + + ssl_log(s, SSL_LOG_INFO, "Init: Configuring temporary DH parameters (512/1024 bits)"); + + /* allocate 512 bit DH param */ + if ((asn1 = (ssl_asn1_t *)ssl_ds_table_get(mc->tTmpKeys, "DH:512")) != NULL) { + ucp = asn1->cpData; + if ((mc->pTmpKeys[SSL_TKPIDX_DH512] = +#if SSL_LIBRARY_VERSION >= 0x00907000 + (void *)d2i_DHparams(NULL, (const unsigned char **)&ucp, asn1->nData)) == NULL) { +#else + (void *)d2i_DHparams(NULL, &ucp, asn1->nData)) == NULL) { +#endif + ssl_log(s, SSL_LOG_ERROR, "Init: Failed to load temporary 512 bit DH parameters"); + ssl_die(); + } + } + + /* allocate 1024 bit DH param */ + if ((asn1 = (ssl_asn1_t *)ssl_ds_table_get(mc->tTmpKeys, "DH:1024")) != NULL) { + ucp = asn1->cpData; + if ((mc->pTmpKeys[SSL_TKPIDX_DH1024] = +#if SSL_LIBRARY_VERSION >= 0x00907000 + (void *)d2i_DHparams(NULL, (const unsigned char **)&ucp, asn1->nData)) == NULL) { +#else + (void *)d2i_DHparams(NULL, &ucp, asn1->nData)) == NULL) { +#endif + ssl_log(s, SSL_LOG_ERROR, "Init: Failed to load temporary 1024 bit DH parameters"); + ssl_die(); + } + } + } + + /* Free Keys and Params */ + else if (action == SSL_TKP_FREE) { + if (mc->pTmpKeys[SSL_TKPIDX_RSA512] != NULL) { + RSA_free((RSA *)mc->pTmpKeys[SSL_TKPIDX_RSA512]); + mc->pTmpKeys[SSL_TKPIDX_RSA512] = NULL; + } + if (mc->pTmpKeys[SSL_TKPIDX_RSA1024] != NULL) { + RSA_free((RSA *)mc->pTmpKeys[SSL_TKPIDX_RSA1024]); + mc->pTmpKeys[SSL_TKPIDX_RSA1024] = NULL; + } + if (mc->pTmpKeys[SSL_TKPIDX_DH512] != NULL) { + DH_free((DH *)mc->pTmpKeys[SSL_TKPIDX_DH512]); + mc->pTmpKeys[SSL_TKPIDX_DH512] = NULL; + } + if (mc->pTmpKeys[SSL_TKPIDX_DH1024] != NULL) { + DH_free((DH *)mc->pTmpKeys[SSL_TKPIDX_DH1024]); + mc->pTmpKeys[SSL_TKPIDX_DH1024] = NULL; + } + } + return; +} + +/* + * Configure a particular server + */ +void ssl_init_ConfigureServer(server_rec *s, pool *p, SSLSrvConfigRec *sc) +{ + SSLModConfigRec *mc = myModConfig(); + int nVerify; + char *cpVHostID; + EVP_PKEY *pKey; + SSL_CTX *ctx; + STACK_OF(X509_NAME) *skCAList; + ssl_asn1_t *asn1; + unsigned char *ucp; + char *cp; + BOOL ok; + BOOL bSkipFirst; + int isca, pathlen; + int i, n; + + /* + * Create the server host:port string because we need it a lot + */ + cpVHostID = ssl_util_vhostid(p, s); + + /* + * Now check for important parameters and the + * possibility that the user forgot to set them. + */ + if (sc->szPublicCertFile[0] == NULL) { + ssl_log(s, SSL_LOG_ERROR, + "Init: (%s) No SSL Certificate set [hint: SSLCertificateFile]", + cpVHostID); + ssl_die(); + } + + /* + * Check for problematic re-initializations + */ + if (sc->pPublicCert[SSL_AIDX_RSA] != NULL || + sc->pPublicCert[SSL_AIDX_DSA] != NULL ) { + ssl_log(s, SSL_LOG_ERROR, + "Init: (%s) Illegal attempt to re-initialise SSL for server " + "(theoretically shouldn't happen!)", cpVHostID); + ssl_die(); + } + + /* + * Create the new per-server SSL context + */ + if (sc->nProtocol == SSL_PROTOCOL_NONE) { + ssl_log(s, SSL_LOG_ERROR, + "Init: (%s) No SSL protocols available [hint: SSLProtocol]", + cpVHostID); + ssl_die(); + } + cp = ap_pstrcat(p, (sc->nProtocol & SSL_PROTOCOL_SSLV2 ? "SSLv2, " : ""), + (sc->nProtocol & SSL_PROTOCOL_SSLV3 ? "SSLv3, " : ""), + (sc->nProtocol & SSL_PROTOCOL_TLSV1 ? "TLSv1, " : ""), NULL); + cp[strlen(cp)-2] = NUL; + ssl_log(s, SSL_LOG_TRACE, + "Init: (%s) Creating new SSL context (protocols: %s)", cpVHostID, cp); + if (sc->nProtocol == SSL_PROTOCOL_SSLV2) + ctx = SSL_CTX_new(SSLv2_server_method()); /* only SSLv2 is left */ + else + ctx = SSL_CTX_new(SSLv23_server_method()); /* be more flexible */ + SSL_CTX_set_options(ctx, SSL_OP_ALL); + if (!(sc->nProtocol & SSL_PROTOCOL_SSLV2)) + SSL_CTX_set_options(ctx, SSL_OP_NO_SSLv2); + if (!(sc->nProtocol & SSL_PROTOCOL_SSLV3)) + SSL_CTX_set_options(ctx, SSL_OP_NO_SSLv3); + if (!(sc->nProtocol & SSL_PROTOCOL_TLSV1)) + SSL_CTX_set_options(ctx, SSL_OP_NO_TLSv1); + SSL_CTX_set_app_data(ctx, s); + sc->pSSLCtx = ctx; + + /* + * Configure additional context ingredients + */ + SSL_CTX_set_options(ctx, SSL_OP_SINGLE_DH_USE); + if (mc->nSessionCacheMode == SSL_SCMODE_NONE) + SSL_CTX_set_session_cache_mode(ctx, SSL_SESS_CACHE_OFF); + else + SSL_CTX_set_session_cache_mode(ctx, SSL_SESS_CACHE_SERVER); + + /* + * Configure callbacks for SSL context + */ + nVerify = SSL_VERIFY_NONE; + if (sc->nVerifyClient == SSL_CVERIFY_REQUIRE) + nVerify |= SSL_VERIFY_PEER|SSL_VERIFY_FAIL_IF_NO_PEER_CERT; + if ( (sc->nVerifyClient == SSL_CVERIFY_OPTIONAL) + || (sc->nVerifyClient == SSL_CVERIFY_OPTIONAL_NO_CA) ) + nVerify |= SSL_VERIFY_PEER; + SSL_CTX_set_verify(ctx, nVerify, ssl_callback_SSLVerify); + 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); + 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_LogTracingState); + + /* + * Configure SSL Cipher Suite + */ + if (sc->szCipherSuite != NULL) { + ssl_log(s, SSL_LOG_TRACE, + "Init: (%s) Configuring permitted SSL ciphers [%s]", + cpVHostID, sc->szCipherSuite); + if (!SSL_CTX_set_cipher_list(ctx, sc->szCipherSuite)) { + ssl_log(s, SSL_LOG_ERROR|SSL_ADD_SSLERR, + "Init: (%s) Unable to configure permitted SSL ciphers", + cpVHostID); + ssl_die(); + } + } + + /* + * Configure Client Authentication details + */ + if (sc->szCACertificateFile != NULL || sc->szCACertificatePath != NULL) { + ssl_log(s, SSL_LOG_TRACE, + "Init: (%s) Configuring client authentication", cpVHostID); + if (!SSL_CTX_load_verify_locations(ctx, + sc->szCACertificateFile, + sc->szCACertificatePath)) { + ssl_log(s, SSL_LOG_ERROR|SSL_ADD_SSLERR, + "Init: (%s) Unable to configure verify locations " + "for client authentication", cpVHostID); + ssl_die(); + } + if ((skCAList = ssl_init_FindCAList(s, p, sc->szCACertificateFile, + sc->szCACertificatePath)) == NULL) { + ssl_log(s, SSL_LOG_ERROR, + "Init: (%s) Unable to determine list of available " + "CA certificates for client authentication", cpVHostID); + ssl_die(); + } + SSL_CTX_set_client_CA_list(sc->pSSLCtx, skCAList); + } + + /* + * Configure Certificate Revocation List (CRL) Details + */ + if (sc->szCARevocationFile != NULL || sc->szCARevocationPath != NULL) { + ssl_log(s, SSL_LOG_TRACE, + "Init: (%s) Configuring certificate revocation facility", cpVHostID); + if ((sc->pRevocationStore = + SSL_X509_STORE_create(sc->szCARevocationFile, + sc->szCARevocationPath)) == NULL) { + ssl_log(s, SSL_LOG_ERROR|SSL_ADD_SSLERR, + "Init: (%s) Unable to configure X.509 CRL storage " + "for certificate revocation", cpVHostID); + ssl_die(); + } + } + + /* + * Give a warning when no CAs were configured but client authentication + * should take place. This cannot work. + */ + if (sc->nVerifyClient == SSL_CVERIFY_REQUIRE) { + skCAList = SSL_CTX_get_client_CA_list(ctx); + if (sk_X509_NAME_num(skCAList) == 0) + ssl_log(s, SSL_LOG_WARN, + "Init: Ops, you want to request client authentication, " + "but no CAs are known for verification!? " + "[Hint: SSLCACertificate*]"); + } + + /* + * Configure server certificate(s) + */ + ok = FALSE; + cp = ap_psprintf(p, "%s:RSA", cpVHostID); + if ((asn1 = (ssl_asn1_t *)ssl_ds_table_get(mc->tPublicCert, cp)) != NULL) { + ssl_log(s, SSL_LOG_TRACE, + "Init: (%s) Configuring RSA server certificate", cpVHostID); + ucp = asn1->cpData; + if ((sc->pPublicCert[SSL_AIDX_RSA] = d2i_X509(NULL, &ucp, asn1->nData)) == NULL) { + ssl_log(s, SSL_LOG_ERROR|SSL_ADD_SSLERR, + "Init: (%s) Unable to import RSA server certificate", + cpVHostID); + ssl_die(); + } + if (SSL_CTX_use_certificate(ctx, sc->pPublicCert[SSL_AIDX_RSA]) <= 0) { + ssl_log(s, SSL_LOG_ERROR|SSL_ADD_SSLERR, + "Init: (%s) Unable to configure RSA server certificate", + cpVHostID); + ssl_die(); + } + ok = TRUE; + } + cp = ap_psprintf(p, "%s:DSA", cpVHostID); + if ((asn1 = (ssl_asn1_t *)ssl_ds_table_get(mc->tPublicCert, cp)) != NULL) { + ssl_log(s, SSL_LOG_TRACE, + "Init: (%s) Configuring DSA server certificate", cpVHostID); + ucp = asn1->cpData; + if ((sc->pPublicCert[SSL_AIDX_DSA] = d2i_X509(NULL, &ucp, asn1->nData)) == NULL) { + ssl_log(s, SSL_LOG_ERROR|SSL_ADD_SSLERR, + "Init: (%s) Unable to import DSA server certificate", + cpVHostID); + ssl_die(); + } + if (SSL_CTX_use_certificate(ctx, sc->pPublicCert[SSL_AIDX_DSA]) <= 0) { + ssl_log(s, SSL_LOG_ERROR|SSL_ADD_SSLERR, + "Init: (%s) Unable to configure DSA server certificate", + cpVHostID); + ssl_die(); + } + ok = TRUE; + } + if (!ok) { + ssl_log(s, SSL_LOG_ERROR, + "Init: (%s) Ops, no RSA or DSA server certificate found?!", cpVHostID); + ssl_log(s, SSL_LOG_ERROR, + "Init: (%s) You have to perform a *full* server restart when you added or removed a certificate and/or key file", cpVHostID); + ssl_die(); + } + + /* + * Some information about the certificate(s) + */ + for (i = 0; i < SSL_AIDX_MAX; i++) { + if (sc->pPublicCert[i] != NULL) { + if (SSL_X509_isSGC(sc->pPublicCert[i])) { + ssl_log(s, SSL_LOG_INFO, + "Init: (%s) %s server certificate enables " + "Server Gated Cryptography (SGC)", + cpVHostID, (i == SSL_AIDX_RSA ? "RSA" : "DSA")); + } + if (SSL_X509_getBC(sc->pPublicCert[i], &isca, &pathlen)) { + if (isca) + ssl_log(s, SSL_LOG_WARN, + "Init: (%s) %s server certificate is a CA certificate " + "(BasicConstraints: CA == TRUE !?)", + cpVHostID, (i == SSL_AIDX_RSA ? "RSA" : "DSA")); + if (pathlen > 0) + ssl_log(s, SSL_LOG_WARN, + "Init: (%s) %s server certificate is not a leaf certificate " + "(BasicConstraints: pathlen == %d > 0 !?)", + cpVHostID, (i == SSL_AIDX_RSA ? "RSA" : "DSA"), pathlen); + } + if (SSL_X509_getCN(p, sc->pPublicCert[i], &cp)) { + if (ap_is_fnmatch(cp) && + !ap_fnmatch(cp, s->server_hostname, FNM_PERIOD|FNM_CASE_BLIND)) { + ssl_log(s, SSL_LOG_WARN, + "Init: (%s) %s server certificate wildcard CommonName (CN) `%s' " + "does NOT match server name!?", cpVHostID, + (i == SSL_AIDX_RSA ? "RSA" : "DSA"), cp); + } + else if (strNE(s->server_hostname, cp)) { + ssl_log(s, SSL_LOG_WARN, + "Init: (%s) %s server certificate CommonName (CN) `%s' " + "does NOT match server name!?", cpVHostID, + (i == SSL_AIDX_RSA ? "RSA" : "DSA"), cp); + } + } + } + } + + /* + * Configure server private key(s) + */ + ok = FALSE; + cp = ap_psprintf(p, "%s:RSA", cpVHostID); + if ((asn1 = (ssl_asn1_t *)ssl_ds_table_get(mc->tPrivateKey, cp)) != NULL) { + ssl_log(s, SSL_LOG_TRACE, + "Init: (%s) Configuring RSA server private key", cpVHostID); + ucp = asn1->cpData; + if ((sc->pPrivateKey[SSL_AIDX_RSA] = + d2i_PrivateKey(EVP_PKEY_RSA, NULL, &ucp, asn1->nData)) == NULL) { + ssl_log(s, SSL_LOG_ERROR|SSL_ADD_SSLERR, + "Init: (%s) Unable to import RSA server private key", + cpVHostID); + ssl_die(); + } + if (SSL_CTX_use_PrivateKey(ctx, sc->pPrivateKey[SSL_AIDX_RSA]) <= 0) { + ssl_log(s, SSL_LOG_ERROR|SSL_ADD_SSLERR, + "Init: (%s) Unable to configure RSA server private key", + cpVHostID); + ssl_die(); + } + ok = TRUE; + } + cp = ap_psprintf(p, "%s:DSA", cpVHostID); + if ((asn1 = (ssl_asn1_t *)ssl_ds_table_get(mc->tPrivateKey, cp)) != NULL) { + ssl_log(s, SSL_LOG_TRACE, + "Init: (%s) Configuring DSA server private key", cpVHostID); + ucp = asn1->cpData; + if ((sc->pPrivateKey[SSL_AIDX_DSA] = + d2i_PrivateKey(EVP_PKEY_DSA, NULL, &ucp, asn1->nData)) == NULL) { + ssl_log(s, SSL_LOG_ERROR|SSL_ADD_SSLERR, + "Init: (%s) Unable to import DSA server private key", + cpVHostID); + ssl_die(); + } + if (SSL_CTX_use_PrivateKey(ctx, sc->pPrivateKey[SSL_AIDX_DSA]) <= 0) { + ssl_log(s, SSL_LOG_ERROR|SSL_ADD_SSLERR, + "Init: (%s) Unable to configure DSA server private key", + cpVHostID); + ssl_die(); + } + ok = TRUE; + } + if (!ok) { + ssl_log(s, SSL_LOG_ERROR, + "Init: (%s) Ops, no RSA or DSA server private key found?!", cpVHostID); + ssl_die(); + } + + /* + * Optionally copy DSA parameters for certificate from private key + * (see http://www.psy.uq.edu.au/~ftp/Crypto/ssleay/TODO.html) + */ + if ( sc->pPublicCert[SSL_AIDX_DSA] != NULL + && sc->pPrivateKey[SSL_AIDX_DSA] != NULL) { + pKey = X509_get_pubkey(sc->pPublicCert[SSL_AIDX_DSA]); + if ( pKey != NULL + && EVP_PKEY_type(pKey->type) == EVP_PKEY_DSA + && EVP_PKEY_missing_parameters(pKey)) + EVP_PKEY_copy_parameters(pKey, sc->pPrivateKey[SSL_AIDX_DSA]); + } + + /* + * 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 (sc->szCertificateChain != NULL) { + bSkipFirst = FALSE; + for (i = 0; i < SSL_AIDX_MAX && sc->szPublicCertFile[i] != NULL; i++) { + if (strEQ(sc->szPublicCertFile[i], sc->szCertificateChain)) { + bSkipFirst = TRUE; + break; + } + } + if ((n = SSL_CTX_use_certificate_chain(ctx, sc->szCertificateChain, + bSkipFirst, NULL)) < 0) { + ssl_log(s, SSL_LOG_ERROR, + "Init: (%s) Failed to configure CA certificate chain!", cpVHostID); + ssl_die(); + } + ssl_log(s, SSL_LOG_TRACE, "Init: (%s) Configuring " + "server certificate chain (%d CA certificate%s)", cpVHostID, + n, n == 1 ? "" : "s"); + } + +#ifdef SSL_VENDOR + ap_hook_use("ap::mod_ssl::vendor::configure_server", + AP_HOOK_SIG4(void,ptr,ptr,ptr), AP_HOOK_ALL, + s, p, sc); +#endif + + return; +} + +void ssl_init_CheckServers(server_rec *sm, pool *p) +{ + server_rec *s; + server_rec **ps; + SSLSrvConfigRec *sc; + ssl_ds_table *t; + pool *sp; + char *key; + BOOL bConflict; + + /* + * Give out warnings when a server has HTTPS configured + * for the HTTP port or vice versa + */ + for (s = sm; s != NULL; s = s->next) { + sc = mySrvConfig(s); + if (sc->bEnabled && s->port == DEFAULT_HTTP_PORT) + ssl_log(sm, SSL_LOG_WARN, + "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->bEnabled && s->port == DEFAULT_HTTPS_PORT) + ssl_log(sm, SSL_LOG_WARN, + "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). + */ + sp = ap_make_sub_pool(p); + t = ssl_ds_table_make(sp, sizeof(server_rec *)); + bConflict = FALSE; + for (s = sm; s != NULL; s = s->next) { + sc = mySrvConfig(s); + if (!sc->bEnabled) + continue; + key = ap_psprintf(sp, "%pA:%u", &s->addrs->host_addr, s->addrs->host_port); + ps = ssl_ds_table_get(t, key); + if (ps != NULL) { + ssl_log(sm, SSL_LOG_WARN, + "Init: SSL server IP/port conflict: %s (%s:%d) vs. %s (%s:%d)", + ssl_util_vhostid(p, s), + (s->defn_name != NULL ? s->defn_name : "unknown"), + s->defn_line_number, + ssl_util_vhostid(p, *ps), + ((*ps)->defn_name != NULL ? (*ps)->defn_name : "unknown"), + (*ps)->defn_line_number); + bConflict = TRUE; + continue; + } + ps = ssl_ds_table_push(t, key); + *ps = s; + } + ssl_ds_table_kill(t); + ap_destroy_pool(sp); + if (bConflict) + ssl_log(sm, SSL_LOG_WARN, + "Init: You should not use name-based virtual hosts in conjunction with SSL!!"); + + return; +} + +static int ssl_init_FindCAList_X509NameCmp(X509_NAME **a, X509_NAME **b) +{ + return(X509_NAME_cmp(*a, *b)); +} + +STACK_OF(X509_NAME) *ssl_init_FindCAList(server_rec *s, pool *pp, char *cpCAfile, char *cpCApath) +{ + STACK_OF(X509_NAME) *skCAList; + STACK_OF(X509_NAME) *sk; + DIR *dir; + struct DIR_TYPE *direntry; + char *cp; + pool *p; + int n; + + /* + * Use a subpool so we don't bloat up the server pool which + * is remains in memory for the complete operation time of + * the server. + */ + p = ap_make_sub_pool(pp); + + /* + * Start with a empty stack/list where new + * entries get added in sorted order. + */ + skCAList = sk_X509_NAME_new(ssl_init_FindCAList_X509NameCmp); + + /* + * Process CA certificate bundle file + */ + if (cpCAfile != NULL) { + sk = SSL_load_client_CA_file(cpCAfile); + for(n = 0; sk != NULL && n < sk_X509_NAME_num(sk); n++) { + ssl_log(s, SSL_LOG_TRACE, + "CA certificate: %s", + X509_NAME_oneline(sk_X509_NAME_value(sk, n), NULL, 0)); + if (sk_X509_NAME_find(skCAList, sk_X509_NAME_value(sk, n)) < 0) + sk_X509_NAME_push(skCAList, sk_X509_NAME_value(sk, n)); + } + } + + /* + * Process CA certificate path files + */ + if (cpCApath != NULL) { + dir = ap_popendir(p, cpCApath); + while ((direntry = readdir(dir)) != NULL) { + cp = ap_pstrcat(p, cpCApath, "/", direntry->d_name, NULL); + sk = SSL_load_client_CA_file(cp); + for(n = 0; sk != NULL && n < sk_X509_NAME_num(sk); n++) { + ssl_log(s, SSL_LOG_TRACE, + "CA certificate: %s", + X509_NAME_oneline(sk_X509_NAME_value(sk, n), NULL, 0)); + if (sk_X509_NAME_find(skCAList, sk_X509_NAME_value(sk, n)) < 0) + sk_X509_NAME_push(skCAList, sk_X509_NAME_value(sk, n)); + } + } + ap_pclosedir(p, dir); + } + + /* + * Cleanup + */ + sk_X509_NAME_set_cmp_func(skCAList, NULL); + ap_destroy_pool(p); + + return skCAList; +} + +void ssl_init_Child(server_rec *s, pool *p) +{ + /* open the mutex lockfile */ + ssl_mutex_reinit(s, p); + return; +} + +void ssl_init_ChildKill(void *data) +{ + /* currently nothing to do */ + return; +} + +void ssl_init_ModuleKill(void *data) +{ + SSLSrvConfigRec *sc; + server_rec *s = (server_rec *)data; + + /* + * Drop the session cache and mutex + */ + ssl_scache_kill(s); + ssl_mutex_kill(s); + + /* + * Destroy the temporary keys and params + */ + ssl_init_TmpKeysHandle(SSL_TKP_FREE, s, NULL); + + /* + * Free the non-pool allocated structures + * in the per-server configurations + */ + for (; s != NULL; s = s->next) { + sc = mySrvConfig(s); + if (sc->pPublicCert[SSL_AIDX_RSA] != NULL) { + X509_free(sc->pPublicCert[SSL_AIDX_RSA]); + sc->pPublicCert[SSL_AIDX_RSA] = NULL; + } + if (sc->pPublicCert[SSL_AIDX_DSA] != NULL) { + X509_free(sc->pPublicCert[SSL_AIDX_DSA]); + sc->pPublicCert[SSL_AIDX_DSA] = NULL; + } + if (sc->pPrivateKey[SSL_AIDX_RSA] != NULL) { + EVP_PKEY_free(sc->pPrivateKey[SSL_AIDX_RSA]); + sc->pPrivateKey[SSL_AIDX_RSA] = NULL; + } + if (sc->pPrivateKey[SSL_AIDX_DSA] != NULL) { + EVP_PKEY_free(sc->pPrivateKey[SSL_AIDX_DSA]); + sc->pPrivateKey[SSL_AIDX_DSA] = NULL; + } + if (sc->pSSLCtx != NULL) { + SSL_CTX_free(sc->pSSLCtx); + sc->pSSLCtx = NULL; + } + } + + /* + * Try to kill the internals of the SSL library. + */ +#ifdef SHARED_MODULE + ERR_free_strings(); + ERR_remove_state(0); + EVP_cleanup(); +#endif + + return; +} + |