/* _ _ ** _ __ ___ ___ __| | ___ ___| | mod_ssl ** | '_ ` _ \ / _ \ / _` | / __/ __| | Apache Interface to OpenSSL ** | | | | | | (_) | (_| | \__ \__ \ | www.modssl.org ** |_| |_| |_|\___/ \__,_|___|___/___/_| ftp.modssl.org ** |_____| ** ssl_engine_init.c ** Initialization of Servers */ /* ==================================================================== * The Apache Software License, Version 1.1 * * Copyright (c) 2000-2001 The Apache Software Foundation. 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. The end-user documentation included with the redistribution, * if any, must include the following acknowledgment: * "This product includes software developed by the * Apache Software Foundation (http://www.apache.org/)." * Alternately, this acknowledgment may appear in the software itself, * if and wherever such third-party acknowledgments normally appear. * * 4. The names "Apache" and "Apache Software Foundation" must * not be used to endorse or promote products derived from this * software without prior written permission. For written * permission, please contact apache@apache.org. * * 5. Products derived from this software may not be called "Apache", * nor may "Apache" appear in their name, without prior written * permission of the Apache Software Foundation. * * THIS SOFTWARE IS PROVIDED ``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 THE APACHE SOFTWARE FOUNDATION OR * ITS 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 */ int ssl_init_Module(apr_pool_t *p, apr_pool_t *plog, apr_pool_t *ptemp, server_rec *s) { SSLModConfigRec *mc = myModConfig(s); SSLSrvConfigRec *sc; server_rec *s2; char *cp; /* * Let us cleanup on restarts and exists */ apr_pool_cleanup_register(p, s, ssl_init_ModuleKill, ssl_init_ChildKill); /* * Any init round fixes the global config */ ssl_config_global_create(s); /* 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 (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 */ ssl_log(s, SSL_LOG_INFO, "Server: %s, Interface: %s, Library: %s", AP_SERVER_BASEVERSION, ssl_var_lookup(p, s, NULL, NULL, "SSL_VERSION_INTERFACE"), ssl_var_lookup(p, s, NULL, NULL, "SSL_VERSION_LIBRARY")); ssl_log(s, SSL_LOG_INFO, "Init: Initializing %s library", SSL_LIBRARY_NAME); ssl_init_SSLLibrary(); #if APR_HAS_THREADS ssl_util_thread_setup(s, p); #endif ssl_pphrase_Handle(s, p); ssl_init_TmpKeysHandle(SSL_TKP_GEN, s, p); /* * 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 */ if (!ssl_mutex_init(s, p)) { return HTTP_INTERNAL_SERVER_ERROR; } ssl_scache_init(s, p); /* * Seed the Pseudo Random Number Generator (PRNG) * * Note: scoreboard size must be fetched at init time because * ap_calc_scoreboard_size() is not threadsafe */ mc->nScoreboardSize = ap_calc_scoreboard_size(); 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, s, NULL, NULL, "SSL_VERSION_PRODUCT")) != NULL && cp[0] != NUL) ap_add_version_component(p, cp); ap_add_version_component(p, ssl_var_lookup(p, s, NULL, NULL, "SSL_VERSION_INTERFACE")); ap_add_version_component(p, ssl_var_lookup(p, s, NULL, NULL, "SSL_VERSION_LIBRARY")); SSL_init_app_data2_idx(); /* for SSL_get_app_data2() at request time */ return OK; } /* * Initialize SSL library (also already needed for the pass phrase dialog) */ void ssl_init_SSLLibrary(void) { CRYPTO_malloc_init(); SSL_load_error_strings(); SSL_library_init(); /* XXX CRYPTO_set_locking_callback(); */ 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, apr_pool_t *p) { SSLModConfigRec *mc = myModConfig(s); 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 #if SSL_LIBRARY_VERSION >= 0x00907000 #define SSL_UCP_CAST(ucp) (const unsigned char **)ucp #else #define SSL_UCP_CAST(ucp) ucp #endif /* * Handle the Temporary RSA Keys and DH Params */ void ssl_init_TmpKeysHandle(int action, server_rec *s, apr_pool_t *p) { SSLModConfigRec *mc = myModConfig(s); ssl_asn1_t *asn1; unsigned char *ucp; long int length; 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(); } length = i2d_RSAPrivateKey(rsa, NULL); ucp = ssl_asn1_table_set(mc->tTmpKeys, "RSA:512", length); (void)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(); } length = i2d_RSAPrivateKey(rsa, NULL); ucp = ssl_asn1_table_set(mc->tTmpKeys, "RSA:1024", length); (void)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(); } length = i2d_DHparams(dh, NULL); ucp = ssl_asn1_table_set(mc->tTmpKeys, "DH:512", length); (void)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(); } length = i2d_DHparams(dh, NULL); ucp = ssl_asn1_table_set(mc->tTmpKeys, "DH:1024", length); (void)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_table_get(mc->tTmpKeys, "RSA:512")) != NULL) { ucp = asn1->cpData; if ((mc->pTmpKeys[SSL_TKPIDX_RSA512] = (void *)d2i_RSAPrivateKey(NULL, SSL_UCP_CAST(&ucp), asn1->nData)) == NULL) { 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_table_get(mc->tTmpKeys, "RSA:1024")) != NULL) { ucp = asn1->cpData; if ((mc->pTmpKeys[SSL_TKPIDX_RSA1024] = (void *)d2i_RSAPrivateKey(NULL, SSL_UCP_CAST(&ucp), asn1->nData)) == NULL) { 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_table_get(mc->tTmpKeys, "DH:512")) != NULL) { ucp = asn1->cpData; if ((mc->pTmpKeys[SSL_TKPIDX_DH512] = (void *)d2i_DHparams(NULL, SSL_UCP_CAST(&ucp), asn1->nData)) == NULL) { 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_table_get(mc->tTmpKeys, "DH:1024")) != NULL) { ucp = asn1->cpData; if ((mc->pTmpKeys[SSL_TKPIDX_DH1024] = (void *)d2i_DHparams(NULL, SSL_UCP_CAST(&ucp), asn1->nData)) == NULL) { 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, apr_pool_t *p, SSLSrvConfigRec *sc) { SSLModConfigRec *mc = myModConfig(s); 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; long cache_mode; /* * Create the server host:port string because we need it a lot */ sc->szVHostID = cpVHostID = ssl_util_vhostid(p, s); sc->nVHostID_length = strlen(sc->szVHostID); /* * 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 = apr_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) { cache_mode = SSL_SESS_CACHE_OFF; } else { /* SSL_SESS_CACHE_NO_INTERNAL_LOOKUP 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_LOOKUP; } SSL_CTX_set_session_cache_mode(ctx, cache_mode); /* * 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); if (sc->nLogLevel >= SSL_LOG_INFO) { /* this callback only logs if SSLLogLevel >= info */ 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, (STACK *)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((char*)sc->szCARevocationFile, (char*)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 = (STACK_OF(X509_NAME) *)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 = apr_psprintf(p, "%s:RSA", cpVHostID); if ((asn1 = ssl_asn1_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 = apr_psprintf(p, "%s:DSA", cpVHostID); if ((asn1 = ssl_asn1_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 (apr_is_fnmatch(cp) && apr_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 = apr_psprintf(p, "%s:RSA", cpVHostID); if ((asn1 = ssl_asn1_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 = apr_psprintf(p, "%s:DSA", cpVHostID); if ((asn1 = ssl_asn1_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_key_type(pKey) == 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, (char*)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"); } return; } void ssl_init_CheckServers(server_rec *sm, apr_pool_t *p) { server_rec *s; server_rec **ps; SSLSrvConfigRec *sc; ssl_ds_table *t; apr_pool_t *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). */ apr_pool_create(&sp, 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 = apr_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); /* XXX - It was giving some problem earlier - check it out - TBD */ apr_pool_destroy(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)); } static void ssl_init_PushCAList(STACK_OF(X509_NAME) *skCAList, server_rec *s, const char *file) { int n; STACK_OF(X509_NAME) *sk; sk = (STACK_OF(X509_NAME) *)SSL_load_client_CA_file(file); for (n = 0; sk != NULL && n < sk_X509_NAME_num(sk); n++) { char name_buf[256]; X509_NAME *name = sk_X509_NAME_value(sk, n); ssl_log(s, SSL_LOG_TRACE, "CA certificate: %s", X509_NAME_oneline(name, name_buf, sizeof(name_buf))); if (sk_X509_NAME_find(skCAList, name) < 0) { /* this will be freed when skCAList is */ sk_X509_NAME_push(skCAList, 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 *pp, const char *cpCAfile, const char *cpCApath) { STACK_OF(X509_NAME) *skCAList; apr_pool_t *p; /* * 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. */ apr_pool_sub_make(&p, pp, NULL); /* * Start with a empty stack/list where new * entries get added in sorted order. */ skCAList = sk_X509_NAME_new(ssl_init_FindCAList_X509NameCmp); /* * 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. */ /* * Process CA certificate bundle file */ if (cpCAfile != NULL) { ssl_init_PushCAList(skCAList, s, cpCAfile); } /* * Process CA certificate path files */ if (cpCApath != NULL) { apr_dir_t *dir; apr_finfo_t direntry; apr_dir_open(&dir, cpCApath, p); while ((apr_dir_read(&direntry, APR_FINFO_DIRENT, dir)) != APR_SUCCESS) { const char *cp = apr_pstrcat(p, cpCApath, "/", direntry.name, NULL); ssl_init_PushCAList(skCAList, s, cp); } apr_dir_close(dir); } /* * Cleanup */ sk_X509_NAME_set_cmp_func(skCAList, NULL); apr_pool_destroy(p); return skCAList; } 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); return; } apr_status_t ssl_init_ChildKill(void *data) { /* server_rec *s = (server_rec *)data; */ /* currently nothing to do */ return APR_SUCCESS; } apr_status_t ssl_init_ModuleKill(void *data) { SSLSrvConfigRec *sc; server_rec *s = (server_rec *)data; /* * Drop the session cache and mutex */ ssl_scache_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 return APR_SUCCESS; }