/* _ _ ** _ __ ___ ___ __| | ___ ___| | mod_ssl ** | '_ ` _ \ / _ \ / _` | / __/ __| | Apache Interface to OpenSSL ** | | | | | | (_) | (_| | \__ \__ \ | www.modssl.org ** |_| |_| |_|\___/ \__,_|___|___/___/_| ftp.modssl.org ** |_____| ** ssl_engine_init.c ** Initialization of Servers */ /* ==================================================================== * Copyright (c) 1998-2004 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 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 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); #ifdef SSL_EXPERIMENTAL_ENGINE ssl_init_Engine(s, p); #endif 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); #ifdef SSL_EXPERIMENTAL_ENGINE ssl_init_Engine(s, p); #endif 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 } /* * 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|SSL_ADD_SSLERR, "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|SSL_ADD_SSLERR, "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 */ DH_free(dh); /* 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 */ DH_free(dh); } /* 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); /* * Disallow a session from being resumed during a renegotiation, * so that an acceptable cipher suite can be negotiated. */ #ifdef SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION SSL_CTX_set_options(ctx, SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION); #endif /* * 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) == FNM_NOMATCH) { 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 (!RSA_blinding_on(sc->pPrivateKey[SSL_AIDX_RSA]->pkey.rsa, NULL)) { ssl_log(s, SSL_LOG_ERROR|SSL_ADD_SSLERR, "Init: (%s) Unable to enable RSA blinding (probably PRNG failure)", 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 if 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; if (s->addrs == NULL) 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; char buf[256]; /* * 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++) { X509_NAME *name = sk_X509_NAME_value(sk, n); ssl_log(s, SSL_LOG_TRACE, "CA certificate: %s", X509_NAME_oneline(name, buf, sizeof(buf))); if (sk_X509_NAME_find(skCAList, name) < 0) sk_X509_NAME_push(skCAList, name); /* will be freed when skCAList is */ else X509_NAME_free(name); } sk_X509_NAME_free(sk); } /* * 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++) { X509_NAME *name = sk_X509_NAME_value(sk, n); ssl_log(s, SSL_LOG_TRACE, "CA certificate: %s", X509_NAME_oneline(name, buf, sizeof(buf))); if (sk_X509_NAME_find(skCAList, name) < 0) sk_X509_NAME_push(skCAList, name); else X509_NAME_free(name); } sk_X509_NAME_free(sk); } 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->pRevocationStore != NULL) { X509_STORE_free(sc->pRevocationStore); sc->pRevocationStore = NULL; } 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 ssl_util_thread_cleanup(); return; }