Changes with Apache 2.4.7
+ *) mod_ssl: Improve handling of ephemeral DH and ECDH keys by
+ allowing custom parameters to be configured via SSLCertificateFile,
+ and by adding standardized DH parameters for 1024/2048/3072/4096 bits.
+ Unless custom parameters are configured, the standardized parameters
+ are applied based on the certificate's RSA/DSA key size. [Kaspar Brand]
+
+ *) mod_ssl, configure: Require OpenSSL 0.9.8a or later. [Kaspar Brand]
+
+ *) mod_ssl: drop support for export-grade ciphers with ephemeral RSA
+ keys, and unconditionally disable aNULL, eNULL and EXP ciphers
+ (not overridable via SSLCipherSuite). [Kaspar Brand]
+
*) Add experimental cmake-based build system for Windows. [Jeff Trawick,
Tom Donovan]
mod_ssl.c ............... main source file containing API structures
mod_ssl.h ............... common header file of mod_ssl
ssl_engine_config.c ..... module configuration handling
- ssl_engine_dh.c ......... DSA/DH support
ssl_engine_init.c ....... module initialization
ssl_engine_io.c ......... I/O support
ssl_engine_kernel.c ..... SSL engine kernel
PATCHES ACCEPTED TO BACKPORT FROM TRUNK:
[ start all new proposals below, under PATCHES PROPOSED. ]
- * mod_ssl: improve ephemeral key handling - in particular, support DH params
- with more than 1024 bits, and allow custom configuration. For a detailed
- list of the changes, see the text at the beginning of the 2.4.x patch.
- trunk patches: https://svn.apache.org/r1526168
- https://svn.apache.org/r1527291
- https://svn.apache.org/r1527294
- https://svn.apache.org/r1527295
- https://svn.apache.org/r1527926
- 2.4.x patch: https://people.apache.org/~kbrand/mod_ssl-2.4.x-ekh.diff
- +1: kbrand, jim, jorton
- [wrowe comments] is it possible to split the patch into 'accepted for 2.2'
- which is straightforward to review (and commit seperately) from those
- features 'new to 2.4'? I think that would attract the necessary eyeballs.
- kbrand: not sure what exactly "accepted for 2.2" would mean here, basically
- all these changes are enhancements, not bug fixes (and only the
- latter I would consider for backporting to a "legacy branch").
- Identifying those bullets at the beginning of the 2.4.x patch
- which you consider "accepted 2.2" might help / give further clues,
- though it should be noted that mod_ssl in 2.4 has drifted
- away from 2.2 quite somewhat meanwhile (think of the removal of
- ssl_toolkit_compat.h e.g.).
-
* easy proposals to synch 2.4.x and trunk
- mod_proxy.c: Eclipse code analysis warning
- mod_mime_magic.c: Reduce stack usage by 3k
<li><code>-</code>: remove cipher from list (can be added later again)</li>
<li><code>!</code>: kill cipher from list completely (can <strong>not</strong> be added later again)</li>
</ul>
+
+<note>
+<title><code>aNULL</code>, <code>eNULL</code> and <code>EXP</code>
+ciphers are always disabled</title>
+<p>Beginning with version 2.4.7, null and export-grade
+ciphers are always disabled, as mod_ssl unconditionally prepends any supplied
+cipher suite string with <code>!aNULL:!eNULL:!EXP:</code> at initialization.</p>
+</note>
+
<p>A simpler way to look at all of this is to use the ``<code>openssl ciphers
-v</code>'' command which provides a nice way to successively create the
correct <em>cipher-spec</em> string. The default <em>cipher-spec</em> string
<usage>
<p>
-This directive points to the PEM-encoded Certificate file for the server and
-optionally also to the corresponding RSA or DSA Private Key file for it
-(contained in the same file). If the contained Private Key is encrypted the
-Pass Phrase dialog is forced at startup time. This directive can be used up to
-three times (referencing different filenames) when both a RSA, a DSA, and an
-ECC based server certificate is used in parallel.</p>
+This directive points to the file with the PEM-encoded certificate,
+optionally also the corresponding private key, and - beginning with
+version 2.4.7 - DH parameters and/or an EC curve name
+for ephemeral keys (as generated by <code>openssl dhparam</code>
+and <code>openssl ecparam</code>, respectively). If the private key
+is encrypted, the pass phrase dialog is forced at startup time.
+</p>
+<p>
+This directive can be used up to three times (referencing different filenames)
+when both an RSA, a DSA, and an ECC based server certificate is used in
+parallel. Note that DH and ECDH parameters are only read from the first
+<directive>SSLCertificateFile</directive> directive.</p>
+
+<note>
+<title>DH parameter interoperability with primes > 1024 bit</title>
+<p>
+Beginning with version 2.4.7, mod_ssl makes use of
+standardized DH parameters with prime lengths of 2048, 3072 and 4096 bits
+(from <a href="http://www.ietf.org/rfc/rfc3526.txt">RFC 3526</a>), and hands
+them out to clients based on the length of the certificate's RSA/DSA key.
+With Java-based clients in particular (Java 7 or earlier), this may lead
+to handshake failures - see this
+<a href="../ssl/ssl_faq.html#javadh">FAQ answer</a> for working around
+such issues.
+</p>
+</note>
+
<example><title>Example</title>
<highlight language="config">
SSLCertificateFile /usr/local/apache2/conf/ssl.crt/server.crt
<li><a href="#msie">Why do I get I/O errors when connecting via
HTTPS to an Apache+mod_ssl server with Microsoft Internet Explorer
(MSIE)?</a></li>
+<li><a href="#srp">How do I enable TLS-SRP?</a></li>
+<li><a href="#javadh">Why do I get handshake failures with Java-based clients when using a certificate with more than 1024 bits?</a></li>
</ul>
<section id="random"><title>Why do I get lots of random SSL protocol
</example>
</section>
+<section id="javadh"><title>Why do I get handshake failures with Java-based clients when using a certificate with more than 1024 bits?</title>
+ <p>Beginning with version 2.4.7,
+ <module>mod_ssl</module> will use DH parameters which include primes
+ with lengths of more than 1024 bits. Java 7 and earlier limit their
+ support for DH prime sizes to a maximum of 1024 bits, however.</p>
+
+ <p>If your Java-based client aborts with exceptions such as
+ <code>java.lang.RuntimeException: Could not generate DH keypair</code> and
+ <code>java.security.InvalidAlgorithmParameterException: Prime size must be
+ multiple of 64, and can only range from 512 to 1024 (inclusive)</code>,
+ and httpd logs <code>tlsv1 alert internal error (SSL alert number 80)</code>
+ (at <directive module="core">LogLevel</directive> <code>info</code>
+ or higher), you can either rearrange mod_ssl's cipher list with
+ <directive module="mod_ssl">SSLCipherSuite</directive>
+ (possibly in conjunction with <directive module="mod_ssl">SSLHonorCipherOrder</directive>),
+ or you can use the <directive module="mod_ssl">SSLCertificateFile</directive>
+ directive to configure custom DH parameters with a 1024-bit prime, which
+ will always have precedence over any of the built-in DH parameters.</p>
+
+ <p>To generate custom DH parameters, use the <code>openssl dhparam</code>
+ command. Alternatively, you can append the following standard 1024-bit DH
+ parameters from <a href="http://www.ietf.org/rfc/rfc2409.txt">RFC 2409</a>,
+ section 6.2 to the respective
+ <directive module="ssl">SSLCertificateFile</directive> file:</p>
+ <example><pre>-----BEGIN DH PARAMETERS-----
+MIGHAoGBAP//////////yQ/aoiFowjTExmKLgNwc0SkCTgiKZ8x0Agu+pjsTmyJR
+Sgh5jjQE3e+VGbPNOkMbMCsKbfJfFDdP4TVtbVHCReSFtXZiXn7G9ExC6aY37WsL
+/1y29Aa37e44a/taiZ+lrp8kEXxLH+ZJKGZR7OZTgf//////////AgEC
+-----END DH PARAMETERS-----</pre></example>
+</section>
+
</section>
<!-- /aboutssl -->
ssl_objs="dnl
mod_ssl.lo dnl
ssl_engine_config.lo dnl
-ssl_engine_dh.lo dnl
ssl_engine_init.lo dnl
ssl_engine_io.lo dnl
ssl_engine_kernel.lo dnl
SSL_CMD_SRV(StrictSNIVHostCheck, FLAG,
"Strict SNI virtual host checking")
-#ifndef OPENSSL_NO_SRP
+#ifdef HAVE_SRP
SSL_CMD_SRV(SRPVerifierFile, TAKE1,
"SRP verifier file "
"('/path/to/file' - created by srptool)")
sslconn->ssl = ssl;
- /*
- * Configure callbacks for SSL connection
- */
- SSL_set_tmp_rsa_callback(ssl, ssl_callback_TmpRSA);
- SSL_set_tmp_dh_callback(ssl, ssl_callback_TmpDH);
-#ifndef OPENSSL_NO_EC
- SSL_set_tmp_ecdh_callback(ssl, ssl_callback_TmpECDH);
-#endif
-
SSL_set_verify_result(ssl, X509_V_OK);
ssl_io_filter_init(c, r, ssl);
# End Source File
# Begin Source File
-SOURCE=.\ssl_engine_dh.c
-# End Source File
-# Begin Source File
-
SOURCE=.\ssl_engine_init.c
# End Source File
# Begin Source File
mc->stapling_mutex = NULL;
#endif
- memset(mc->pTmpKeys, 0, sizeof(mc->pTmpKeys));
-
apr_pool_userdata_set(mc, SSL_MOD_CONFIG_KEY,
apr_pool_cleanup_null,
pool);
mctx->stapling_force_url = NULL;
#endif
-#ifndef OPENSSL_NO_SRP
+#ifdef HAVE_SRP
mctx->srp_vfile = NULL;
mctx->srp_unknown_user_seed = NULL;
mctx->srp_vbase = NULL;
sc->proxy_ssl_check_peer_expire = SSL_ENABLED_UNSET;
sc->proxy_ssl_check_peer_cn = SSL_ENABLED_UNSET;
sc->proxy_ssl_check_peer_name = SSL_ENABLED_UNSET;
-#ifndef OPENSSL_NO_TLSEXT
+#ifdef HAVE_TLSEXT
sc->strict_sni_vhost_check = SSL_ENABLED_UNSET;
#endif
#ifdef HAVE_FIPS
cfgMerge(stapling_force_url, NULL);
#endif
-#ifndef OPENSSL_NO_SRP
+#ifdef HAVE_SRP
cfgMergeString(srp_vfile);
cfgMergeString(srp_unknown_user_seed);
#endif
cfgMerge(proxy_ssl_check_peer_expire, SSL_ENABLED_UNSET);
cfgMerge(proxy_ssl_check_peer_cn, SSL_ENABLED_UNSET);
cfgMerge(proxy_ssl_check_peer_name, SSL_ENABLED_UNSET);
-#ifndef OPENSSL_NO_TLSEXT
+#ifdef HAVE_TLSEXT
cfgMerge(strict_sni_vhost_check, SSL_ENABLED_UNSET);
#endif
#ifdef HAVE_FIPS
SSLSrvConfigRec *sc = mySrvConfig(cmd->server);
SSLDirConfigRec *dc = (SSLDirConfigRec *)dcfg;
+ /* always disable null and export ciphers */
+ arg = apr_pstrcat(cmd->pool, "!aNULL:!eNULL:!EXP:", arg, NULL);
+
if (cmd->path) {
dc->szCipherSuite = arg;
}
{
SSLSrvConfigRec *sc = mySrvConfig(cmd->server);
+ /* always disable null and export ciphers */
+ arg = apr_pstrcat(cmd->pool, "!aNULL:!eNULL:!EXP:", arg, NULL);
+
sc->proxy->auth.cipher_suite = arg;
return NULL;
const char *ssl_cmd_SSLStrictSNIVHostCheck(cmd_parms *cmd, void *dcfg, int flag)
{
-#ifndef OPENSSL_NO_TLSEXT
+#ifdef HAVE_TLSEXT
SSLSrvConfigRec *sc = mySrvConfig(cmd->server);
sc->strict_sni_vhost_check = flag ? SSL_ENABLED_TRUE : SSL_ENABLED_FALSE;
#endif /* HAVE_OCSP_STAPLING */
-#ifndef OPENSSL_NO_SRP
+#ifdef HAVE_SRP
const char *ssl_cmd_SSLSRPVerifierFile(cmd_parms *cmd, void *dcfg,
const char *arg)
return NULL;
}
-#endif /* OPENSSL_NO_SRP */
+#endif /* HAVE_SRP */
void ssl_hook_ConfigTest(apr_pool_t *pconf, server_rec *s)
{
-#if 0
-=pod
-#endif
-
-/* Licensed to the Apache Software Foundation (ASF) under one or more
- * contributor license agreements. See the NOTICE file distributed with
- * this work for additional information regarding copyright ownership.
- * The ASF licenses this file to You under the Apache License, Version 2.0
- * (the "License"); you may not use this file except in compliance with
- * the License. You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-/* _ _
- * _ __ ___ ___ __| | ___ ___| | mod_ssl
- * | '_ ` _ \ / _ \ / _` | / __/ __| | Apache Interface to OpenSSL
- * | | | | | | (_) | (_| | \__ \__ \ |
- * |_| |_| |_|\___/ \__,_|___|___/___/_|
- * |_____|
- * ssl_engine_dh.c
- * Diffie-Hellman Built-in Temporary Parameters
- */
-
-#include "ssl_private.h"
-
-/* ----BEGIN GENERATED SECTION-------- */
-
-/*
-** Diffie-Hellman-Parameters: (512 bit)
-** prime:
-** 00:9f:db:8b:8a:00:45:44:f0:04:5f:17:37:d0:ba:
-** 2e:0b:27:4c:df:1a:9f:58:82:18:fb:43:53:16:a1:
-** 6e:37:41:71:fd:19:d8:d8:f3:7c:39:bf:86:3f:d6:
-** 0e:3e:30:06:80:a3:03:0c:6e:4c:37:57:d0:8f:70:
-** e6:aa:87:10:33
-** generator: 2 (0x2)
-** Diffie-Hellman-Parameters: (1024 bit)
-** prime:
-** 00:d6:7d:e4:40:cb:bb:dc:19:36:d6:93:d3:4a:fd:
-** 0a:d5:0c:84:d2:39:a4:5f:52:0b:b8:81:74:cb:98:
-** bc:e9:51:84:9f:91:2e:63:9c:72:fb:13:b4:b4:d7:
-** 17:7e:16:d5:5a:c1:79:ba:42:0b:2a:29:fe:32:4a:
-** 46:7a:63:5e:81:ff:59:01:37:7b:ed:dc:fd:33:16:
-** 8a:46:1a:ad:3b:72:da:e8:86:00:78:04:5b:07:a7:
-** db:ca:78:74:08:7d:15:10:ea:9f:cc:9d:dd:33:05:
-** 07:dd:62:db:88:ae:aa:74:7d:e0:f4:d6:e2:bd:68:
-** b0:e7:39:3e:0f:24:21:8e:b3
-** generator: 2 (0x2)
-*/
-
-static unsigned char dh512_p[] = {
- 0x9F, 0xDB, 0x8B, 0x8A, 0x00, 0x45, 0x44, 0xF0, 0x04, 0x5F, 0x17, 0x37,
- 0xD0, 0xBA, 0x2E, 0x0B, 0x27, 0x4C, 0xDF, 0x1A, 0x9F, 0x58, 0x82, 0x18,
- 0xFB, 0x43, 0x53, 0x16, 0xA1, 0x6E, 0x37, 0x41, 0x71, 0xFD, 0x19, 0xD8,
- 0xD8, 0xF3, 0x7C, 0x39, 0xBF, 0x86, 0x3F, 0xD6, 0x0E, 0x3E, 0x30, 0x06,
- 0x80, 0xA3, 0x03, 0x0C, 0x6E, 0x4C, 0x37, 0x57, 0xD0, 0x8F, 0x70, 0xE6,
- 0xAA, 0x87, 0x10, 0x33,
-};
-static unsigned char dh512_g[] = {
- 0x02,
-};
-
-static DH *get_dh512(void)
-{
- DH *dh;
-
- if (!(dh = DH_new())) {
- return NULL;
- }
-
- dh->p = BN_bin2bn(dh512_p, sizeof(dh512_p), NULL);
- dh->g = BN_bin2bn(dh512_g, sizeof(dh512_g), NULL);
- if (!(dh->p && dh->g)) {
- DH_free(dh);
- return NULL;
- }
-
- return dh;
-}
-
-static unsigned char dh1024_p[] = {
- 0xD6, 0x7D, 0xE4, 0x40, 0xCB, 0xBB, 0xDC, 0x19, 0x36, 0xD6, 0x93, 0xD3,
- 0x4A, 0xFD, 0x0A, 0xD5, 0x0C, 0x84, 0xD2, 0x39, 0xA4, 0x5F, 0x52, 0x0B,
- 0xB8, 0x81, 0x74, 0xCB, 0x98, 0xBC, 0xE9, 0x51, 0x84, 0x9F, 0x91, 0x2E,
- 0x63, 0x9C, 0x72, 0xFB, 0x13, 0xB4, 0xB4, 0xD7, 0x17, 0x7E, 0x16, 0xD5,
- 0x5A, 0xC1, 0x79, 0xBA, 0x42, 0x0B, 0x2A, 0x29, 0xFE, 0x32, 0x4A, 0x46,
- 0x7A, 0x63, 0x5E, 0x81, 0xFF, 0x59, 0x01, 0x37, 0x7B, 0xED, 0xDC, 0xFD,
- 0x33, 0x16, 0x8A, 0x46, 0x1A, 0xAD, 0x3B, 0x72, 0xDA, 0xE8, 0x86, 0x00,
- 0x78, 0x04, 0x5B, 0x07, 0xA7, 0xDB, 0xCA, 0x78, 0x74, 0x08, 0x7D, 0x15,
- 0x10, 0xEA, 0x9F, 0xCC, 0x9D, 0xDD, 0x33, 0x05, 0x07, 0xDD, 0x62, 0xDB,
- 0x88, 0xAE, 0xAA, 0x74, 0x7D, 0xE0, 0xF4, 0xD6, 0xE2, 0xBD, 0x68, 0xB0,
- 0xE7, 0x39, 0x3E, 0x0F, 0x24, 0x21, 0x8E, 0xB3,
-};
-static unsigned char dh1024_g[] = {
- 0x02,
-};
-
-static DH *get_dh1024(void)
-{
- DH *dh;
-
- if (!(dh = DH_new())) {
- return NULL;
- }
-
- dh->p = BN_bin2bn(dh1024_p, sizeof(dh1024_p), NULL);
- dh->g = BN_bin2bn(dh1024_g, sizeof(dh1024_g), NULL);
- if (!(dh->p && dh->g)) {
- DH_free(dh);
- return NULL;
- }
-
- return dh;
-}
-
-/* ----END GENERATED SECTION---------- */
-
-DH *ssl_dh_GetTmpParam(int nKeyLen)
-{
- DH *dh;
-
- if (nKeyLen == 512)
- dh = get_dh512();
- else if (nKeyLen == 1024)
- dh = get_dh1024();
- else
- dh = get_dh1024();
- return dh;
-}
-
-DH *ssl_dh_GetParamFromFile(char *file)
-{
- DH *dh = NULL;
- BIO *bio;
-
- if ((bio = BIO_new_file(file, "r")) == NULL)
- return NULL;
- dh = PEM_read_bio_DHparams(bio, NULL, NULL, NULL);
- BIO_free(bio);
- return (dh);
-}
-
-/*
-=cut
-##
-## Embedded Perl script for generating the temporary DH parameters
-##
-
-require 5.003;
-use strict;
-
-# configuration
-my $file = $0;
-my $begin = '----BEGIN GENERATED SECTION--------';
-my $end = '----END GENERATED SECTION----------';
-
-# read ourself and keep a backup
-open(FP, "<$file") || die;
-my $source = '';
-$source .= $_ while (<FP>);
-close(FP);
-open(FP, ">$file.bak") || die;
-print FP $source;
-close(FP);
-
-# generate the DH parameters
-print "1. Generate 512 and 1024 bit Diffie-Hellman parameters (p, g)\n";
-my $rand = '';
-foreach $file (qw(/var/log/messages /var/adm/messages
- /kernel /vmunix /vmlinuz /etc/hosts /etc/resolv.conf)) {
- if (-f $file) {
- $rand = $file if ($rand eq '');
- $rand .= ":$file" if ($rand ne '');
- }
-}
-$rand = "-rand $rand" if ($rand ne '');
-system("openssl gendh $rand -out dh512.pem 512");
-system("openssl gendh $rand -out dh1024.pem 1024");
-
-# generate DH param info
-my $dhinfo = '';
-open(FP, "openssl dh -noout -text -in dh512.pem |") || die;
-$dhinfo .= $_ while (<FP>);
-close(FP);
-open(FP, "openssl dh -noout -text -in dh1024.pem |") || die;
-$dhinfo .= $_ while (<FP>);
-close(FP);
-$dhinfo =~ s|^|** |mg;
-$dhinfo = "\n\/\*\n$dhinfo\*\/\n\n";
-
-my $indent_args = "-i4 -npsl -di0 -br -nce -d0 -cli0 -npcs -nfc1";
-
-# generate C source from DH params
-my $dhsource = '';
-open(FP, "openssl dh -noout -C -in dh512.pem | indent $indent_args | expand |") || die;
-$dhsource .= $_ while (<FP>);
-close(FP);
-open(FP, "openssl dh -noout -C -in dh1024.pem | indent $indent_args | expand |") || die;
-$dhsource .= $_ while (<FP>);
-close(FP);
-$dhsource =~ s|(DH\s+\*get_dh)(\d+)[^}]*\n}|static $1$2(void)
-{
- DH *dh;
-
- if (!(dh = DH_new())) {
- return NULL;
- }
-
- dh->p = BN_bin2bn(dh$2_p, sizeof(dh$2_p), NULL);
- dh->g = BN_bin2bn(dh$2_g, sizeof(dh$2_g), NULL);
- if (!(dh->p && dh->g)) {
- DH_free(dh);
- return NULL;
- }
-
- return dh;
-}
-|sg;
-
-# generate output
-my $o = $dhinfo . $dhsource;
-
-# insert the generated code at the target location
-$source =~ s|(\/\* $begin.+?\n).*\n(.*?\/\* $end)|$1$o$2|s;
-
-# and update the source on disk
-print "Updating file `$file'\n";
-open(FP, ">$file") || die;
-print FP $source;
-close(FP);
-
-# cleanup
-unlink("dh512.pem");
-unlink("dh1024.pem");
-
-=pod
-*/
** _________________________________________________________________
*/
-#ifndef OPENSSL_NO_EC
+#ifdef HAVE_ECC
#define KEYTYPES "RSA, DSA or ECC"
#else
#define KEYTYPES "RSA or DSA"
modver, AP_SERVER_BASEVERSION, incver);
}
-
-/*
- * Handle the Temporary RSA Keys and DH Params
- */
-
-#define MODSSL_TMP_KEY_FREE(mc, type, idx) \
- if (mc->pTmpKeys[idx]) { \
- type##_free((type *)mc->pTmpKeys[idx]); \
- mc->pTmpKeys[idx] = NULL; \
- }
-
-#define MODSSL_TMP_KEYS_FREE(mc, type) \
- MODSSL_TMP_KEY_FREE(mc, type, SSL_TMP_KEY_##type##_512); \
- MODSSL_TMP_KEY_FREE(mc, type, SSL_TMP_KEY_##type##_1024)
-
-static void ssl_tmp_keys_free(server_rec *s)
-{
- SSLModConfigRec *mc = myModConfig(s);
-
- MODSSL_TMP_KEYS_FREE(mc, RSA);
- MODSSL_TMP_KEYS_FREE(mc, DH);
-#ifndef OPENSSL_NO_EC
- MODSSL_TMP_KEY_FREE(mc, EC_KEY, SSL_TMP_KEY_EC_256);
-#endif
-}
-
-static int ssl_tmp_key_init_rsa(server_rec *s,
- int bits, int idx)
-{
- SSLModConfigRec *mc = myModConfig(s);
-
-#ifdef HAVE_FIPS
-
- if (FIPS_mode() && bits < 1024) {
- mc->pTmpKeys[idx] = NULL;
- ap_log_error(APLOG_MARK, APLOG_DEBUG, 0, s, APLOGNO(01877)
- "Init: Skipping generating temporary "
- "%d bit RSA private key in FIPS mode", bits);
- return OK;
- }
-
-#endif
-#ifdef HAVE_GENERATE_EX
- {
- RSA *tkey;
- BIGNUM *bn_f4;
- if (!(tkey = RSA_new())
- || !(bn_f4 = BN_new())
- || !BN_set_word(bn_f4, RSA_F4)
- || !RSA_generate_key_ex(tkey, bits, bn_f4, NULL))
- {
- ap_log_error(APLOG_MARK, APLOG_ERR, 0, s, APLOGNO(01878)
- "Init: Failed to generate temporary "
- "%d bit RSA private key", bits);
- ssl_log_ssl_error(SSLLOG_MARK, APLOG_ERR, s);
- return !OK;
- }
- BN_free(bn_f4);
- mc->pTmpKeys[idx] = tkey;
- }
-#else
- if (!(mc->pTmpKeys[idx] =
- RSA_generate_key(bits, RSA_F4, NULL, NULL)))
- {
- ap_log_error(APLOG_MARK, APLOG_ERR, 0, s, APLOGNO(01879)
- "Init: Failed to generate temporary "
- "%d bit RSA private key", bits);
- ssl_log_ssl_error(SSLLOG_MARK, APLOG_ERR, s);
- return !OK;
- }
-#endif
-
- return OK;
-}
-
-static int ssl_tmp_key_init_dh(server_rec *s,
- int bits, int idx)
-{
- SSLModConfigRec *mc = myModConfig(s);
-
-#ifdef HAVE_FIPS
-
- if (FIPS_mode() && bits < 1024) {
- mc->pTmpKeys[idx] = NULL;
- ap_log_error(APLOG_MARK, APLOG_DEBUG, 0, s, APLOGNO(01880)
- "Init: Skipping generating temporary "
- "%d bit DH parameters in FIPS mode", bits);
- return OK;
- }
-
-#endif
-
- if (!(mc->pTmpKeys[idx] =
- ssl_dh_GetTmpParam(bits)))
- {
- ap_log_error(APLOG_MARK, APLOG_ERR, 0, s, APLOGNO(01881)
- "Init: Failed to generate temporary "
- "%d bit DH parameters", bits);
- return !OK;
- }
-
- return OK;
-}
-
-#ifndef OPENSSL_NO_EC
-static int ssl_tmp_key_init_ec(server_rec *s,
- int bits, int idx)
-{
- SSLModConfigRec *mc = myModConfig(s);
- EC_KEY *ecdh = NULL;
-
- /* XXX: Are there any FIPS constraints we should enforce? */
-
- if (bits != 256) {
- ap_log_error(APLOG_MARK, APLOG_ERR, 0, s, APLOGNO(02298)
- "Init: Failed to generate temporary "
- "%d bit EC parameters, only 256 bits supported", bits);
- return !OK;
- }
-
- if ((ecdh = EC_KEY_new()) == NULL ||
- EC_KEY_set_group(ecdh, EC_GROUP_new_by_curve_name(NID_X9_62_prime256v1)) != 1)
- {
- ap_log_error(APLOG_MARK, APLOG_ERR, 0, s, APLOGNO(02299)
- "Init: Failed to generate temporary "
- "%d bit EC parameters", bits);
- return !OK;
- }
-
- mc->pTmpKeys[idx] = ecdh;
- return OK;
-}
-
-#define MODSSL_TMP_KEY_INIT_EC(s, bits) \
- ssl_tmp_key_init_ec(s, bits, SSL_TMP_KEY_EC_##bits)
-
-#endif
-
-#define MODSSL_TMP_KEY_INIT_RSA(s, bits) \
- ssl_tmp_key_init_rsa(s, bits, SSL_TMP_KEY_RSA_##bits)
-
-#define MODSSL_TMP_KEY_INIT_DH(s, bits) \
- ssl_tmp_key_init_dh(s, bits, SSL_TMP_KEY_DH_##bits)
-
-static int ssl_tmp_keys_init(server_rec *s)
-{
- ap_log_error(APLOG_MARK, APLOG_TRACE1, 0, s,
- "Init: Generating temporary RSA private keys (512/1024 bits)");
-
- if (MODSSL_TMP_KEY_INIT_RSA(s, 512) ||
- MODSSL_TMP_KEY_INIT_RSA(s, 1024)) {
- return !OK;
- }
-
- ap_log_error(APLOG_MARK, APLOG_TRACE1, 0, s,
- "Init: Generating temporary DH parameters (512/1024 bits)");
-
- if (MODSSL_TMP_KEY_INIT_DH(s, 512) ||
- MODSSL_TMP_KEY_INIT_DH(s, 1024)) {
- return !OK;
- }
-
-#ifndef OPENSSL_NO_EC
- ap_log_error(APLOG_MARK, APLOG_TRACE1, 0, s,
- "Init: Generating temporary EC parameters (256 bits)");
-
- if (MODSSL_TMP_KEY_INIT_EC(s, 256)) {
- return !OK;
- }
-#endif
-
- return OK;
-}
-
/*
* Per-module initialization
*/
*/
ssl_pphrase_Handle(base_server, ptemp);
- if (ssl_tmp_keys_init(base_server)) {
- return !OK;
- }
-
/*
* initialize the mutex handling
*/
*/
if (mctx->pks->certs[SSL_AIDX_RSA] ||
mctx->pks->certs[SSL_AIDX_DSA]
-#ifndef OPENSSL_NO_EC
+#ifdef HAVE_ECC
|| mctx->pks->certs[SSL_AIDX_ECC]
#endif
)
}
}
-#ifndef OPENSSL_NO_TLSEXT
+#ifdef HAVE_TLSEXT
static void ssl_init_ctx_tls_extensions(server_rec *s,
apr_pool_t *p,
apr_pool_t *ptemp,
}
#endif
-#ifndef OPENSSL_NO_SRP
+#ifdef HAVE_SRP
/*
* TLS-SRP support
*/
#ifdef SSL_OP_NO_COMPRESSION
/* OpenSSL >= 1.0 only */
SSL_CTX_set_options(ctx, SSL_OP_NO_COMPRESSION);
-#elif OPENSSL_VERSION_NUMBER >= 0x00908000L
+#else
sk_SSL_COMP_zero(SSL_COMP_get_compression_methods());
#endif
}
* Configure additional context ingredients
*/
SSL_CTX_set_options(ctx, SSL_OP_SINGLE_DH_USE);
+#ifdef HAVE_ECC
+ SSL_CTX_set_options(ctx, SSL_OP_SINGLE_ECDH_USE);
+#endif
#ifdef SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION
/*
{
SSL_CTX *ctx = mctx->ssl_ctx;
- SSL_CTX_set_tmp_rsa_callback(ctx, ssl_callback_TmpRSA);
SSL_CTX_set_tmp_dh_callback(ctx, ssl_callback_TmpDH);
-#ifndef OPENSSL_NO_EC
- SSL_CTX_set_tmp_ecdh_callback(ctx,ssl_callback_TmpECDH);
-#endif
SSL_CTX_set_info_callback(ctx, ssl_callback_Info);
}
modssl_ctx_t *mctx)
{
SSL_CTX *ctx = mctx->ssl_ctx;
- const char *suite = mctx->auth.cipher_suite;
+ const char *suite;
/*
- * Configure SSL Cipher Suite
+ * Configure SSL Cipher Suite. Always disable NULL and export ciphers,
+ * see also ssl_engine_config.c:ssl_cmd_SSLCipherSuite().
+ * OpenSSL's SSL_DEFAULT_CIPHER_LIST already includes !aNULL:!eNULL,
+ * so only prepend !EXP in this case.
*/
- if (!suite) {
- return;
- }
+ suite = mctx->auth.cipher_suite ? mctx->auth.cipher_suite :
+ apr_pstrcat(ptemp, "!EXP:", SSL_DEFAULT_CIPHER_LIST, NULL);
ap_log_error(APLOG_MARK, APLOG_TRACE1, 0, s,
"Configuring permitted SSL ciphers [%s]",
if (mctx->pks) {
/* XXX: proxy support? */
ssl_init_ctx_cert_chain(s, p, ptemp, mctx);
-#ifndef OPENSSL_NO_TLSEXT
+#ifdef HAVE_TLSEXT
ssl_init_ctx_tls_extensions(s, p, ptemp, mctx);
#endif
}
{
SSLModConfigRec *mc = myModConfig(s);
ssl_asn1_t *asn1;
- MODSSL_D2I_X509_CONST unsigned char *ptr;
+ const unsigned char *ptr;
const char *type = ssl_asn1_keystr(idx);
X509 *cert;
{
SSLModConfigRec *mc = myModConfig(s);
ssl_asn1_t *asn1;
- MODSSL_D2I_PrivateKey_CONST unsigned char *ptr;
+ const unsigned char *ptr;
const char *type = ssl_asn1_keystr(idx);
int pkey_type;
EVP_PKEY *pkey;
-#ifndef OPENSSL_NO_EC
+#ifdef HAVE_ECC
if (idx == SSL_AIDX_ECC)
pkey_type = EVP_PKEY_EC;
else
modssl_ctx_t *mctx)
{
const char *rsa_id, *dsa_id;
-#ifndef OPENSSL_NO_EC
+#ifdef HAVE_ECC
const char *ecc_id;
+ EC_GROUP *ecparams;
+ int nid;
+ EC_KEY *eckey;
#endif
const char *vhost_id = mctx->sc->vhost_id;
int i;
int have_rsa, have_dsa;
-#ifndef OPENSSL_NO_EC
+ DH *dhparams;
+#ifdef HAVE_ECC
int have_ecc;
#endif
rsa_id = ssl_asn1_table_keyfmt(ptemp, vhost_id, SSL_AIDX_RSA);
dsa_id = ssl_asn1_table_keyfmt(ptemp, vhost_id, SSL_AIDX_DSA);
-#ifndef OPENSSL_NO_EC
+#ifdef HAVE_ECC
ecc_id = ssl_asn1_table_keyfmt(ptemp, vhost_id, SSL_AIDX_ECC);
#endif
have_rsa = ssl_server_import_cert(s, mctx, rsa_id, SSL_AIDX_RSA);
have_dsa = ssl_server_import_cert(s, mctx, dsa_id, SSL_AIDX_DSA);
-#ifndef OPENSSL_NO_EC
+#ifdef HAVE_ECC
have_ecc = ssl_server_import_cert(s, mctx, ecc_id, SSL_AIDX_ECC);
#endif
if (!(have_rsa || have_dsa
-#ifndef OPENSSL_NO_EC
+#ifdef HAVE_ECC
|| have_ecc
#endif
)) {
have_rsa = ssl_server_import_key(s, mctx, rsa_id, SSL_AIDX_RSA);
have_dsa = ssl_server_import_key(s, mctx, dsa_id, SSL_AIDX_DSA);
-#ifndef OPENSSL_NO_EC
+#ifdef HAVE_ECC
have_ecc = ssl_server_import_key(s, mctx, ecc_id, SSL_AIDX_ECC);
#endif
if (!(have_rsa || have_dsa
-#ifndef OPENSSL_NO_EC
+#ifdef HAVE_ECC
|| have_ecc
#endif
)) {
"Oops, no " KEYTYPES " server private key found?!");
ssl_die(s);
}
+
+ /*
+ * Try to read DH parameters from the (first) SSLCertificateFile
+ */
+ if ((mctx->pks->cert_files[0] != NULL) &&
+ (dhparams = ssl_dh_GetParamFromFile(mctx->pks->cert_files[0]))) {
+ SSL_CTX_set_tmp_dh(mctx->ssl_ctx, dhparams);
+ ap_log_error(APLOG_MARK, APLOG_DEBUG, 0, s, APLOGNO(02540)
+ "Custom DH parameters (%d bits) for %s loaded from %s",
+ BN_num_bits(dhparams->p), vhost_id,
+ mctx->pks->cert_files[0]);
+ }
+
+#ifdef HAVE_ECC
+ /*
+ * Similarly, try to read the ECDH curve name from SSLCertificateFile...
+ */
+ if ((mctx->pks->cert_files[0] != NULL) &&
+ (ecparams = ssl_ec_GetParamFromFile(mctx->pks->cert_files[0])) &&
+ (nid = EC_GROUP_get_curve_name(ecparams)) &&
+ (eckey = EC_KEY_new_by_curve_name(nid))) {
+ SSL_CTX_set_tmp_ecdh(mctx->ssl_ctx, eckey);
+ ap_log_error(APLOG_MARK, APLOG_DEBUG, 0, s, APLOGNO(02541)
+ "ECDH curve %s for %s specified in %s",
+ OBJ_nid2sn(nid), vhost_id, mctx->pks->cert_files[0]);
+ }
+ /*
+ * ...otherwise, configure NIST P-256 (required to enable ECDHE)
+ */
+ else {
+ SSL_CTX_set_tmp_ecdh(mctx->ssl_ctx,
+ EC_KEY_new_by_curve_name(NID_X9_62_prime256v1));
+ }
+#endif
}
#ifdef HAVE_TLS_SESSION_TICKETS
klen = strlen(key);
if ((ps = (server_rec *)apr_hash_get(table, key, klen))) {
-#ifdef OPENSSL_NO_TLSEXT
+#ifndef HAVE_TLSEXT
int level = APLOG_WARNING;
const char *problem = "conflict";
#else
}
if (conflict) {
-#ifdef OPENSSL_NO_TLSEXT
+#ifndef HAVE_TLSEXT
ap_log_error(APLOG_MARK, APLOG_WARNING, 0, base_server, APLOGNO(01917)
"Init: You should not use name-based "
"virtual hosts in conjunction with SSL!!");
{
MODSSL_CFG_ITEM_FREE(SSL_CTX_free, mctx->ssl_ctx);
-#ifndef OPENSSL_NO_SRP
+#ifdef HAVE_SRP
if (mctx->srp_vbase != NULL) {
SRP_VBASE_free(mctx->srp_vbase);
mctx->srp_vbase = NULL;
*/
ssl_scache_kill(base_server);
- /*
- * Destroy the temporary keys and params
- */
- ssl_tmp_keys_free(base_server);
-
/*
* Free the non-pool allocated structures
* in the per-server configurations
server = sslconn->server;
if (sslconn->is_proxy) {
-#ifndef OPENSSL_NO_TLSEXT
+#ifdef HAVE_TLSEXT
apr_ipsubnet_t *ip;
#endif
const char *hostname_note = apr_table_get(c->notes,
BOOL proxy_ssl_check_peer_ok = TRUE;
sc = mySrvConfig(server);
-#ifndef OPENSSL_NO_TLSEXT
+#ifdef HAVE_TLSEXT
/*
* Enable SNI for backend requests. Make sure we don't do it for
* pure SSLv3 connections, and also prevent IP addresses
#include "util_md5.h"
static void ssl_configure_env(request_rec *r, SSLConnRec *sslconn);
-#ifndef OPENSSL_NO_TLSEXT
+#ifdef HAVE_TLSEXT
static int ssl_find_vhost(void *servername, conn_rec *c, server_rec *s);
#endif
SSLSrvConfigRec *sc = mySrvConfig(r->server);
SSLConnRec *sslconn;
const char *upgrade;
-#ifndef OPENSSL_NO_TLSEXT
+#ifdef HAVE_TLSEXT
const char *servername;
#endif
SSL *ssl;
if (!ssl) {
return DECLINED;
}
-#ifndef OPENSSL_NO_TLSEXT
+#ifdef HAVE_TLSEXT
if ((servername = SSL_get_servername(ssl, TLSEXT_NAMETYPE_host_name))) {
char *host, *scope_id;
apr_port_t port;
return DECLINED;
}
-#ifndef OPENSSL_NO_SRP
+#ifdef HAVE_SRP
/*
* Support for per-directory reconfigured SSL connection parameters
*
"SSL_SERVER_A_SIG",
"SSL_SESSION_ID",
"SSL_SESSION_RESUMED",
-#ifndef OPENSSL_NO_SRP
+#ifdef HAVE_SRP
"SSL_SRP_USER",
"SSL_SRP_USERINFO",
#endif
SSLDirConfigRec *dc = myDirConfig(r);
apr_table_t *env = r->subprocess_env;
char *var, *val = "";
-#ifndef OPENSSL_NO_TLSEXT
+#ifdef HAVE_TLSEXT
const char *servername;
#endif
STACK_OF(X509) *peer_certs;
/* the always present HTTPS (=HTTP over SSL) flag! */
apr_table_setn(env, "HTTPS", "on");
-#ifndef OPENSSL_NO_TLSEXT
+#ifdef HAVE_TLSEXT
/* add content of SNI TLS extension (if supplied with ClientHello) */
if ((servername = SSL_get_servername(ssl, TLSEXT_NAMETYPE_host_name))) {
apr_table_set(env, "SSL_TLS_SNI", servername);
*/
/*
- * Handle out temporary RSA private keys on demand
- *
- * The background of this as the TLSv1 standard explains it:
- *
- * | D.1. Temporary RSA keys
- * |
- * | US Export restrictions limit RSA keys used for encryption to 512
- * | bits, but do not place any limit on lengths of RSA keys used for
- * | signing operations. Certificates often need to be larger than 512
- * | bits, since 512-bit RSA keys are not secure enough for high-value
- * | transactions or for applications requiring long-term security. Some
- * | certificates are also designated signing-only, in which case they
- * | cannot be used for key exchange.
- * |
- * | When the public key in the certificate cannot be used for encryption,
- * | the server signs a temporary RSA key, which is then exchanged. In
- * | exportable applications, the temporary RSA key should be the maximum
- * | allowable length (i.e., 512 bits). Because 512-bit RSA keys are
- * | relatively insecure, they should be changed often. For typical
- * | electronic commerce applications, it is suggested that keys be
- * | changed daily or every 500 transactions, and more often if possible.
- * | Note that while it is acceptable to use the same temporary key for
- * | multiple transactions, it must be signed each time it is used.
- * |
- * | RSA key generation is a time-consuming process. In many cases, a
- * | low-priority process can be assigned the task of key generation.
- * | Whenever a new key is completed, the existing temporary key can be
- * | replaced with the new one.
- *
- * XXX: base on comment above, if thread support is enabled,
- * we should spawn a low-priority thread to generate new keys
- * on the fly.
- *
- * So we generated 512 and 1024 bit temporary keys on startup
- * which we now just hand out on demand....
+ * Grab well-defined DH parameters from OpenSSL, see <openssl/bn.h>
+ * (get_rfc*) for all available primes.
*/
-
-RSA *ssl_callback_TmpRSA(SSL *ssl, int export, int keylen)
-{
- conn_rec *c = (conn_rec *)SSL_get_app_data(ssl);
- SSLModConfigRec *mc = myModConfigFromConn(c);
- int idx;
-
- ap_log_cerror(APLOG_MARK, APLOG_TRACE2, 0, c,
- "handing out temporary %d bit RSA key", keylen);
-
- /* doesn't matter if export flag is on,
- * we won't be asked for keylen > 512 in that case.
- * if we are asked for a keylen > 1024, it is too expensive
- * to generate on the fly.
- * XXX: any reason not to generate 2048 bit keys at startup?
- */
-
- switch (keylen) {
- case 512:
- idx = SSL_TMP_KEY_RSA_512;
- break;
-
- case 1024:
- default:
- idx = SSL_TMP_KEY_RSA_1024;
- }
-
- return (RSA *)mc->pTmpKeys[idx];
+#define make_get_dh(rfc,size,gen) \
+static DH *get_dh##size(void) \
+{ \
+ DH *dh; \
+ if (!(dh = DH_new())) { \
+ return NULL; \
+ } \
+ dh->p = get_##rfc##_prime_##size(NULL); \
+ BN_dec2bn(&dh->g, #gen); \
+ if (!dh->p || !dh->g) { \
+ DH_free(dh); \
+ return NULL; \
+ } \
+ return dh; \
}
/*
- * Hand out the already generated DH parameters...
+ * Prepare DH parameters from 1024 to 4096 bits, in 1024-bit increments
+ */
+make_get_dh(rfc2409, 1024, 2)
+make_get_dh(rfc3526, 2048, 2)
+make_get_dh(rfc3526, 3072, 2)
+make_get_dh(rfc3526, 4096, 2)
+
+/*
+ * Hand out standard DH parameters, based on the authentication strength
*/
DH *ssl_callback_TmpDH(SSL *ssl, int export, int keylen)
{
conn_rec *c = (conn_rec *)SSL_get_app_data(ssl);
- SSLModConfigRec *mc = myModConfigFromConn(c);
- int idx;
-
- ap_log_cerror(APLOG_MARK, APLOG_TRACE2, 0, c,
- "handing out temporary %d bit DH key", keylen);
-
- switch (keylen) {
- case 512:
- idx = SSL_TMP_KEY_DH_512;
- break;
+ EVP_PKEY *pkey = SSL_get_privatekey(ssl);
+ int type = pkey ? EVP_PKEY_type(pkey->type) : EVP_PKEY_NONE;
- case 1024:
- default:
- idx = SSL_TMP_KEY_DH_1024;
+ /*
+ * OpenSSL will call us with either keylen == 512 or keylen == 1024
+ * (see the definition of SSL_EXPORT_PKEYLENGTH in ssl_locl.h).
+ * Adjust the DH parameter length according to the size of the
+ * RSA/DSA private key used for the current connection, and always
+ * use at least 1024-bit parameters.
+ * Note: This may cause interoperability issues with implementations
+ * which limit their DH support to 1024 bit - e.g. Java 7 and earlier.
+ * In this case, SSLCertificateFile can be used to specify fixed
+ * 1024-bit DH parameters (with the effect that OpenSSL skips this
+ * callback).
+ */
+ if ((type == EVP_PKEY_RSA) || (type == EVP_PKEY_DSA)) {
+ keylen = EVP_PKEY_bits(pkey);
}
- return (DH *)mc->pTmpKeys[idx];
-}
-
-#ifndef OPENSSL_NO_EC
-EC_KEY *ssl_callback_TmpECDH(SSL *ssl, int export, int keylen)
-{
- conn_rec *c = (conn_rec *)SSL_get_app_data(ssl);
- SSLModConfigRec *mc = myModConfigFromConn(c);
- int idx;
-
- /* XXX Uses 256-bit key for now. TODO: support other sizes. */
ap_log_cerror(APLOG_MARK, APLOG_TRACE2, 0, c,
- "handing out temporary 256 bit ECC key");
-
- switch (keylen) {
- case 256:
- default:
- idx = SSL_TMP_KEY_EC_256;
- }
-
- return (EC_KEY *)mc->pTmpKeys[idx];
+ "handing out built-in DH parameters for %d-bit authenticated connection", keylen);
+
+ if (keylen >= 4096)
+ return get_dh4096();
+ else if (keylen >= 3072)
+ return get_dh3072();
+ else if (keylen >= 2048)
+ return get_dh2048();
+ else
+ return get_dh1024();
}
-#endif
/*
* This OpenSSL callback function is called when OpenSSL
}
}
-#ifndef OPENSSL_NO_TLSEXT
+#ifdef HAVE_TLSEXT
/*
* This callback function is executed when OpenSSL encounters an extended
* client hello with a server name indication extension ("SNI", cf. RFC 4366).
return 0;
}
-#endif /* OPENSSL_NO_TLSEXT */
+#endif /* HAVE_TLSEXT */
#ifdef HAVE_TLS_SESSION_TICKETS
/*
}
#endif /* HAVE_TLS_SESSION_TICKETS */
-#ifndef OPENSSL_NO_SRP
+#ifdef HAVE_SRP
int ssl_callback_SRPServerParams(SSL *ssl, int *ad, void *arg)
{
return SSL_ERROR_NONE;
}
-#endif /* OPENSSL_NO_SRP */
+#endif /* HAVE_SRP */
ap_log_error(APLOG_MARK, APLOG_ERR, 0, s, APLOGNO(01966)
"Init: Failed to create pass phrase pipe '%s'",
sc->server->pphrase_dialog_path);
- PEMerr(PEM_F_DEF_CALLBACK,PEM_R_PROBLEMS_GETTING_PASSWORD);
+ PEMerr(PEM_F_PEM_DEF_CALLBACK,PEM_R_PROBLEMS_GETTING_PASSWORD);
memset(buf, 0, (unsigned int)bufsize);
return (-1);
}
}
else { /* sc->server->pphrase_dialog_type == SSL_PPTYPE_BUILTIN */
#ifdef WIN32
- PEMerr(PEM_F_DEF_CALLBACK,PEM_R_PROBLEMS_GETTING_PASSWORD);
+ PEMerr(PEM_F_PEM_DEF_CALLBACK,PEM_R_PROBLEMS_GETTING_PASSWORD);
memset(buf, 0, (unsigned int)bufsize);
return (-1);
#else
i = EVP_read_pw_string(buf, bufsize, "", FALSE);
}
if (i != 0) {
- PEMerr(PEM_F_DEF_CALLBACK,PEM_R_PROBLEMS_GETTING_PASSWORD);
+ PEMerr(PEM_F_PEM_DEF_CALLBACK,PEM_R_PROBLEMS_GETTING_PASSWORD);
memset(buf, 0, (unsigned int)bufsize);
return (-1);
}
else if (ssl != NULL && strcEQ(var, "COMPRESS_METHOD")) {
result = ssl_var_lookup_ssl_compress_meth(ssl);
}
-#ifndef OPENSSL_NO_TLSEXT
+#ifdef HAVE_TLSEXT
else if (ssl != NULL && strcEQ(var, "TLS_SNI")) {
result = apr_pstrdup(p, SSL_get_servername(ssl,
TLSEXT_NAMETYPE_host_name));
#endif
result = apr_pstrdup(p, flag ? "true" : "false");
}
-#ifndef OPENSSL_NO_SRP
+#ifdef HAVE_SRP
else if (ssl != NULL && strcEQ(var, "SRP_USER")) {
if ((result = SSL_get_srp_username(ssl)) != NULL) {
result = apr_pstrdup(p, result);
* success and writes the string to the given bio. */
static int dump_extn_value(BIO *bio, ASN1_OCTET_STRING *str)
{
- MODSSL_D2I_ASN1_type_bytes_CONST unsigned char *pp = str->data;
+ const unsigned char *pp = str->data;
ASN1_STRING *ret = ASN1_STRING_new();
int rv = 0;
static char *ssl_var_lookup_ssl_compress_meth(SSL *ssl)
{
char *result = "NULL";
-#if (OPENSSL_VERSION_NUMBER >= 0x00908000) && !defined(OPENSSL_NO_COMP)
+#ifndef OPENSSL_NO_COMP
SSL_SESSION *pSession = SSL_get_session(ssl);
if (pSession) {
#include <openssl/engine.h>
#endif
-#if (OPENSSL_VERSION_NUMBER < 0x0090700f)
-#error mod_ssl requires OpenSSL 0.9.7 or later
-#endif
-
-/* ...shifting sands of OpenSSL... */
-#if (OPENSSL_VERSION_NUMBER >= 0x0090707f)
-#define MODSSL_D2I_SSL_SESSION_CONST const
-#else
-#define MODSSL_D2I_SSL_SESSION_CONST
-#endif
-
-#if (OPENSSL_VERSION_NUMBER >= 0x00908000)
-#define HAVE_GENERATE_EX
-#define MODSSL_D2I_ASN1_type_bytes_CONST const
-#define MODSSL_D2I_PrivateKey_CONST const
-#define MODSSL_D2I_X509_CONST const
-#else
-#define MODSSL_D2I_ASN1_type_bytes_CONST
-#define MODSSL_D2I_PrivateKey_CONST
-#define MODSSL_D2I_X509_CONST
-#endif
-
-#if OPENSSL_VERSION_NUMBER >= 0x00908080 && !defined(OPENSSL_NO_OCSP) \
- && !defined(OPENSSL_NO_TLSEXT)
-#define HAVE_OCSP_STAPLING
-#if (OPENSSL_VERSION_NUMBER < 0x10000000)
-#define sk_OPENSSL_STRING_pop sk_pop
-#endif
-#endif
-
-#if (OPENSSL_VERSION_NUMBER >= 0x009080a0) && defined(OPENSSL_FIPS)
-#define HAVE_FIPS
+#if (OPENSSL_VERSION_NUMBER < 0x0090801f)
+#error mod_ssl requires OpenSSL 0.9.8a or later
#endif
+/**
+ * ...shifting sands of OpenSSL...
+ * Note: when adding support for new OpenSSL features, avoid explicit
+ * version number checks whenever possible, and use "feature-based"
+ * detection instead (check for definitions of constants or functions)
+ */
#if (OPENSSL_VERSION_NUMBER >= 0x10000000)
#define MODSSL_SSL_CIPHER_CONST const
#define MODSSL_SSL_METHOD_CONST const
#else
#define MODSSL_SSL_CIPHER_CONST
#define MODSSL_SSL_METHOD_CONST
-/* ECC support came along in OpenSSL 1.0.0 */
-#define OPENSSL_NO_EC
#endif
-#ifndef PEM_F_DEF_CALLBACK
-#ifdef PEM_F_PEM_DEF_CALLBACK
-/** In OpenSSL 0.9.8 PEM_F_DEF_CALLBACK was renamed */
-#define PEM_F_DEF_CALLBACK PEM_F_PEM_DEF_CALLBACK
+#if defined(OPENSSL_FIPS)
+#define HAVE_FIPS
#endif
+
+#if defined(SSL_OP_NO_TLSv1_2)
+#define HAVE_TLSV1_X
#endif
-#ifndef OPENSSL_NO_TLSEXT
-#ifndef SSL_CTRL_SET_TLSEXT_HOSTNAME
-#define OPENSSL_NO_TLSEXT
+/**
+ * The following features all depend on TLS extension support.
+ * Within this block, check again for features (not version numbers).
+ */
+#if !defined(OPENSSL_NO_TLSEXT) && defined(SSL_set_tlsext_host_name)
+
+#define HAVE_TLSEXT
+
+/* ECC: make sure we have at least 1.0.0 */
+#if !defined(OPENSSL_NO_EC) && defined(TLSEXT_ECPOINTFORMAT_uncompressed)
+#define HAVE_ECC
+#endif
+
+/* OCSP stapling */
+#if !defined(OPENSSL_NO_OCSP) && defined(SSL_CTX_set_tlsext_status_cb)
+#define HAVE_OCSP_STAPLING
+#ifndef sk_OPENSSL_STRING_pop
+#define sk_OPENSSL_STRING_pop sk_pop
#endif
#endif
-#ifndef OPENSSL_NO_TLSEXT
-#ifdef SSL_CTRL_SET_TLSEXT_TICKET_KEY_CB
+/* TLS session tickets */
+#if defined(SSL_CTX_set_tlsext_ticket_key_cb)
#define HAVE_TLS_SESSION_TICKETS
#define TLSEXT_TICKET_KEY_LEN 48
#ifndef tlsext_tick_md
#endif
#endif
#endif
-#endif
-#ifdef SSL_OP_NO_TLSv1_2
-#define HAVE_TLSV1_X
-#endif
-
-#if !defined(OPENSSL_NO_COMP) && !defined(SSL_OP_NO_COMPRESSION) \
- && OPENSSL_VERSION_NUMBER < 0x00908000L
-#define OPENSSL_NO_COMP
-#endif
-
-/* SRP support came in OpenSSL 1.0.1 */
-#ifndef OPENSSL_NO_SRP
-#ifdef SSL_CTRL_SET_TLS_EXT_SRP_USERNAME_CB
+/* Secure Remote Password */
+#if !defined(OPENSSL_NO_SRP) && defined(SSL_CTRL_SET_TLS_EXT_SRP_USERNAME_CB)
+#define HAVE_SRP
#include <openssl/srp.h>
-#else
-#define OPENSSL_NO_SRP
-#endif
#endif
+#endif /* !defined(OPENSSL_NO_TLSEXT) && defined(SSL_set_tlsext_host_name) */
+
/* mod_ssl headers */
#include "ssl_util_ssl.h"
#define SSL_ALGO_UNKNOWN (0)
#define SSL_ALGO_RSA (1<<0)
#define SSL_ALGO_DSA (1<<1)
-#ifndef OPENSSL_NO_EC
+#ifdef HAVE_ECC
#define SSL_ALGO_ECC (1<<2)
#define SSL_ALGO_ALL (SSL_ALGO_RSA|SSL_ALGO_DSA|SSL_ALGO_ECC)
#else
#define SSL_AIDX_RSA (0)
#define SSL_AIDX_DSA (1)
-#ifndef OPENSSL_NO_EC
+#ifdef HAVE_ECC
#define SSL_AIDX_ECC (2)
#define SSL_AIDX_MAX (3)
#else
#define SSL_AIDX_MAX (2)
#endif
-
-/**
- * Define IDs for the temporary RSA keys and DH params
- */
-
-#define SSL_TMP_KEY_RSA_512 (0)
-#define SSL_TMP_KEY_RSA_1024 (1)
-#define SSL_TMP_KEY_DH_512 (2)
-#define SSL_TMP_KEY_DH_1024 (3)
-#ifndef OPENSSL_NO_EC
-#define SSL_TMP_KEY_EC_256 (4)
-#define SSL_TMP_KEY_MAX (5)
-#else
-#define SSL_TMP_KEY_MAX (4)
-#endif
-
/**
* Define the SSL options
*/
apr_global_mutex_t *pMutex;
apr_array_header_t *aRandSeed;
apr_hash_t *tVHostKeys;
- void *pTmpKeys[SSL_TMP_KEY_MAX];
/* Two hash tables of pointers to ssl_asn1_t structures. The
* structures are used to store certificates and private keys
const char *stapling_force_url;
#endif
-#ifndef OPENSSL_NO_SRP
+#ifdef HAVE_SRP
char *srp_vfile;
char *srp_unknown_user_seed;
SRP_VBASE *srp_vbase;
ssl_enabled_t proxy_ssl_check_peer_expire;
ssl_enabled_t proxy_ssl_check_peer_cn;
ssl_enabled_t proxy_ssl_check_peer_name;
-#ifndef OPENSSL_NO_TLSEXT
+#ifdef HAVE_TLSEXT
ssl_enabled_t strict_sni_vhost_check;
#endif
#ifdef HAVE_FIPS
const char *ssl_cmd_SSLOCSPResponderTimeout(cmd_parms *cmd, void *dcfg, const char *arg);
const char *ssl_cmd_SSLOCSPEnable(cmd_parms *cmd, void *dcfg, int flag);
-#ifndef OPENSSL_NO_SRP
+#ifdef HAVE_SRP
const char *ssl_cmd_SSLSRPVerifierFile(cmd_parms *cmd, void *dcfg, const char *arg);
const char *ssl_cmd_SSLSRPUnknownUserSeed(cmd_parms *cmd, void *dcfg, const char *arg);
#endif
extern const authz_provider ssl_authz_provider_verify_client;
/** OpenSSL callbacks */
-RSA *ssl_callback_TmpRSA(SSL *, int, int);
DH *ssl_callback_TmpDH(SSL *, int, int);
-#ifndef OPENSSL_NO_EC
-EC_KEY *ssl_callback_TmpECDH(SSL *, int, int);
-#endif
int ssl_callback_SSLVerify(int, X509_STORE_CTX *);
int ssl_callback_SSLVerify_CRL(int, X509_STORE_CTX *, conn_rec *);
int ssl_callback_proxy_cert(SSL *ssl, X509 **x509, EVP_PKEY **pkey);
SSL_SESSION *ssl_callback_GetSessionCacheEntry(SSL *, unsigned char *, int, int *);
void ssl_callback_DelSessionCacheEntry(SSL_CTX *, SSL_SESSION *);
void ssl_callback_Info(const SSL *, int, int);
-#ifndef OPENSSL_NO_TLSEXT
+#ifdef HAVE_TLSEXT
int ssl_callback_ServerNameIndication(SSL *, int *, modssl_ctx_t *);
#endif
#ifdef HAVE_TLS_SESSION_TICKETS
void ssl_stapling_ex_init(void);
int ssl_stapling_init_cert(server_rec *s, modssl_ctx_t *mctx, X509 *x);
#endif
-#ifndef OPENSSL_NO_SRP
+#ifdef HAVE_SRP
int ssl_callback_SRPServerParams(SSL *, int *, void *);
#endif
void ssl_pphrase_Handle(server_rec *, apr_pool_t *);
/** Diffie-Hellman Parameter Support */
-DH *ssl_dh_GetTmpParam(int);
-DH *ssl_dh_GetParamFromFile(char *);
+DH *ssl_dh_GetParamFromFile(const char *);
+#ifdef HAVE_ECC
+EC_GROUP *ssl_ec_GetParamFromFile(const char *);
+#endif
unsigned char *ssl_asn1_table_set(apr_hash_t *table,
const char *key,
SSLModConfigRec *mc = myModConfig(s);
unsigned char dest[SSL_SESSION_MAX_DER];
unsigned int destlen = SSL_SESSION_MAX_DER;
- MODSSL_D2I_SSL_SESSION_CONST unsigned char *ptr;
+ const unsigned char *ptr;
apr_status_t rv;
if (mc->sesscache->flags & AP_SOCACHE_FLAG_NOTMPSAFE) {
case EVP_PKEY_DSA:
t = SSL_ALGO_DSA;
break;
-#ifndef OPENSSL_NO_EC
+#ifdef HAVE_ECC
case EVP_PKEY_EC:
t = SSL_ALGO_ECC;
break;
case SSL_ALGO_DSA:
cp = "DSA";
break;
-#ifndef OPENSSL_NO_EC
+#ifdef HAVE_ECC
case SSL_ALGO_ECC:
cp = "ECC";
break;
apr_hash_set(table, key, klen, NULL);
}
-#ifndef OPENSSL_NO_EC
+#ifdef HAVE_ECC
static const char *ssl_asn1_key_types[] = {"RSA", "DSA", "ECC"};
#else
static const char *ssl_asn1_key_types[] = {"RSA", "DSA"};
return ok;
}
+/* _________________________________________________________________
+**
+** Custom (EC)DH parameter support
+** _________________________________________________________________
+*/
+
+DH *ssl_dh_GetParamFromFile(const char *file)
+{
+ DH *dh = NULL;
+ BIO *bio;
+
+ if ((bio = BIO_new_file(file, "r")) == NULL)
+ return NULL;
+ dh = PEM_read_bio_DHparams(bio, NULL, NULL, NULL);
+ BIO_free(bio);
+ return (dh);
+}
+
+#ifdef HAVE_ECC
+EC_GROUP *ssl_ec_GetParamFromFile(const char *file)
+{
+ EC_GROUP *group = NULL;
+ BIO *bio;
+
+ if ((bio = BIO_new_file(file, "r")) == NULL)
+ return NULL;
+ group = PEM_read_bio_ECPKParameters(bio, NULL, NULL, NULL);
+ BIO_free(bio);
+ return (group);
+}
+#endif
+
/* _________________________________________________________________
**
** Extra Server Certificate Chain Support
projects / apache / commitdiff