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apache/modules/ssl/ssl_engine_init.c
Doug MacEachern c25e79513a need to free X509_NAME duplicates already found in the stack built by 
ssl_init_FindCAList().


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@93626 13f79535-47bb-0310-9956-ffa450edef68
2002-02-28 04:00:51 +00:00

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/* _ _
** _ __ ___ ___ __| | ___ ___| | 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));
}
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;
STACK_OF(X509_NAME) *sk;
apr_dir_t *dir;
apr_finfo_t direntry;
char *cp;
apr_pool_t *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.
*/
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) {
sk = (STACK_OF(X509_NAME) *)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, NULL, 0));
if (sk_X509_NAME_find(skCAList, name) < 0)
sk_X509_NAME_push(skCAList, name); /* this will be freed when skCAList is */
else
X509_NAME_free(name);
}
sk_X509_NAME_free(sk);
}
/*
* Process CA certificate path files
*/
if (cpCApath != NULL) {
apr_dir_open(&dir, cpCApath, p);
while ((apr_dir_read(&direntry, APR_FINFO_DIRENT, dir)) != APR_SUCCESS) {
cp = apr_pstrcat(p, cpCApath, "/", direntry.name, NULL);
sk = (STACK_OF(X509_NAME) *)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, NULL, 0));
if (sk_X509_NAME_find(skCAList, name) < 0)
sk_X509_NAME_push(skCAList, name); /* this will be freed when skCAList is */
else
X509_NAME_free(name);
}
sk_X509_NAME_free(sk);
}
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;
}
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