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openssl/apps/s_cb.c
Dr. Stephen Henson c5ea65b157 New chain building flags. 
New flags to build certificate chains. The can be used to rearrange
the chain so all an application needs to do is add all certificates
in arbitrary order and then build the chain to check and correct them.

Add verify error code when building chain.

Update docs.
(cherry picked from commit 13dc3ce9ab)
2014-02-23 13:49:21 +00:00

1757 lines
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/* apps/s_cb.c - callback functions used by s_client, s_server, and s_time */
/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
* All rights reserved.
*
* This package is an SSL implementation written
* by Eric Young (eay@cryptsoft.com).
* The implementation was written so as to conform with Netscapes SSL.
*
* This library is free for commercial and non-commercial use as long as
* the following conditions are aheared to. The following conditions
* apply to all code found in this distribution, be it the RC4, RSA,
* lhash, DES, etc., code; not just the SSL code. The SSL documentation
* included with this distribution is covered by the same copyright terms
* except that the holder is Tim Hudson (tjh@cryptsoft.com).
*
* Copyright remains Eric Young's, and as such any Copyright notices in
* the code are not to be removed.
* If this package is used in a product, Eric Young should be given attribution
* as the author of the parts of the library used.
* This can be in the form of a textual message at program startup or
* in documentation (online or textual) provided with the package.
*
* 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 copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* "This product includes cryptographic software written by
* Eric Young (eay@cryptsoft.com)"
* The word 'cryptographic' can be left out if the rouines from the library
* being used are not cryptographic related :-).
* 4. If you include any Windows specific code (or a derivative thereof) from
* the apps directory (application code) you must include an acknowledgement:
* "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
*
* THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
* ANY EXPRESS 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 AUTHOR OR 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.
*
* The licence and distribution terms for any publically available version or
* derivative of this code cannot be changed. i.e. this code cannot simply be
* copied and put under another distribution licence
* [including the GNU Public Licence.]
*/
/* ====================================================================
* Copyright (c) 1998-2006 The OpenSSL Project. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* 3. All advertising materials mentioning features or use of this
* software must display the following acknowledgment:
* "This product includes software developed by the OpenSSL Project
* for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
*
* 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
* endorse or promote products derived from this software without
* prior written permission. For written permission, please contact
* openssl-core@openssl.org.
*
* 5. Products derived from this software may not be called "OpenSSL"
* nor may "OpenSSL" appear in their names without prior written
* permission of the OpenSSL Project.
*
* 6. Redistributions of any form whatsoever must retain the following
* acknowledgment:
* "This product includes software developed by the OpenSSL Project
* for use in the OpenSSL Toolkit (http://www.openssl.org/)"
*
* THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``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 OpenSSL PROJECT 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.
* ====================================================================
*
* This product includes cryptographic software written by Eric Young
* (eay@cryptsoft.com). This product includes software written by Tim
* Hudson (tjh@cryptsoft.com).
*
*/
#include <stdio.h>
#include <stdlib.h>
#define USE_SOCKETS
#define NON_MAIN
#include "apps.h"
#undef NON_MAIN
#undef USE_SOCKETS
#include <openssl/err.h>
#include <openssl/rand.h>
#include <openssl/x509.h>
#include <openssl/ssl.h>
#include "s_apps.h"
#define COOKIE_SECRET_LENGTH 16
int verify_depth=0;
int verify_quiet=0;
int verify_error=X509_V_OK;
int verify_return_error=0;
unsigned char cookie_secret[COOKIE_SECRET_LENGTH];
int cookie_initialized=0;
int MS_CALLBACK verify_callback(int ok, X509_STORE_CTX *ctx)
{
X509 *err_cert;
int err,depth;
err_cert=X509_STORE_CTX_get_current_cert(ctx);
err= X509_STORE_CTX_get_error(ctx);
depth= X509_STORE_CTX_get_error_depth(ctx);
if (!verify_quiet || !ok)
{
BIO_printf(bio_err,"depth=%d ",depth);
if (err_cert)
{
X509_NAME_print_ex(bio_err,
X509_get_subject_name(err_cert),
0, XN_FLAG_ONELINE);
BIO_puts(bio_err, "\n");
}
else
BIO_puts(bio_err, "<no cert>\n");
}
if (!ok)
{
BIO_printf(bio_err,"verify error:num=%d:%s\n",err,
X509_verify_cert_error_string(err));
if (verify_depth >= depth)
{
if (!verify_return_error)
ok=1;
verify_error=X509_V_OK;
}
else
{
ok=0;
verify_error=X509_V_ERR_CERT_CHAIN_TOO_LONG;
}
}
switch (err)
{
case X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT:
BIO_puts(bio_err,"issuer= ");
X509_NAME_print_ex(bio_err, X509_get_issuer_name(err_cert),
0, XN_FLAG_ONELINE);
BIO_puts(bio_err, "\n");
break;
case X509_V_ERR_CERT_NOT_YET_VALID:
case X509_V_ERR_ERROR_IN_CERT_NOT_BEFORE_FIELD:
BIO_printf(bio_err,"notBefore=");
ASN1_TIME_print(bio_err,X509_get_notBefore(err_cert));
BIO_printf(bio_err,"\n");
break;
case X509_V_ERR_CERT_HAS_EXPIRED:
case X509_V_ERR_ERROR_IN_CERT_NOT_AFTER_FIELD:
BIO_printf(bio_err,"notAfter=");
ASN1_TIME_print(bio_err,X509_get_notAfter(err_cert));
BIO_printf(bio_err,"\n");
break;
case X509_V_ERR_NO_EXPLICIT_POLICY:
if (!verify_quiet)
policies_print(bio_err, ctx);
break;
}
if (err == X509_V_OK && ok == 2 && !verify_quiet)
policies_print(bio_err, ctx);
if (ok && !verify_quiet)
BIO_printf(bio_err,"verify return:%d\n",ok);
return(ok);
}
int set_cert_stuff(SSL_CTX *ctx, char *cert_file, char *key_file)
{
if (cert_file != NULL)
{
/*
SSL *ssl;
X509 *x509;
*/
if (SSL_CTX_use_certificate_file(ctx,cert_file,
SSL_FILETYPE_PEM) <= 0)
{
BIO_printf(bio_err,"unable to get certificate from '%s'\n",cert_file);
ERR_print_errors(bio_err);
return(0);
}
if (key_file == NULL) key_file=cert_file;
if (SSL_CTX_use_PrivateKey_file(ctx,key_file,
SSL_FILETYPE_PEM) <= 0)
{
BIO_printf(bio_err,"unable to get private key from '%s'\n",key_file);
ERR_print_errors(bio_err);
return(0);
}
/*
In theory this is no longer needed
ssl=SSL_new(ctx);
x509=SSL_get_certificate(ssl);
if (x509 != NULL) {
EVP_PKEY *pktmp;
pktmp = X509_get_pubkey(x509);
EVP_PKEY_copy_parameters(pktmp,
SSL_get_privatekey(ssl));
EVP_PKEY_free(pktmp);
}
SSL_free(ssl);
*/
/* If we are using DSA, we can copy the parameters from
* the private key */
/* Now we know that a key and cert have been set against
* the SSL context */
if (!SSL_CTX_check_private_key(ctx))
{
BIO_printf(bio_err,"Private key does not match the certificate public key\n");
return(0);
}
}
return(1);
}
int set_cert_key_stuff(SSL_CTX *ctx, X509 *cert, EVP_PKEY *key,
STACK_OF(X509) *chain, int build_chain)
{
int chflags = chain ? SSL_BUILD_CHAIN_FLAG_CHECK : 0;
if (cert == NULL)
return 1;
if (SSL_CTX_use_certificate(ctx,cert) <= 0)
{
BIO_printf(bio_err,"error setting certificate\n");
ERR_print_errors(bio_err);
return 0;
}
if (SSL_CTX_use_PrivateKey(ctx,key) <= 0)
{
BIO_printf(bio_err,"error setting private key\n");
ERR_print_errors(bio_err);
return 0;
}
/* Now we know that a key and cert have been set against
* the SSL context */
if (!SSL_CTX_check_private_key(ctx))
{
BIO_printf(bio_err,"Private key does not match the certificate public key\n");
return 0;
}
if (chain && !SSL_CTX_set1_chain(ctx, chain))
{
BIO_printf(bio_err,"error setting certificate chain\n");
ERR_print_errors(bio_err);
return 0;
}
if (build_chain && !SSL_CTX_build_cert_chain(ctx, chflags))
{
BIO_printf(bio_err,"error building certificate chain\n");
ERR_print_errors(bio_err);
return 0;
}
return 1;
}
static void ssl_print_client_cert_types(BIO *bio, SSL *s)
{
const unsigned char *p;
int i;
int cert_type_num = SSL_get0_certificate_types(s, &p);
if (!cert_type_num)
return;
BIO_puts(bio, "Client Certificate Types: ");
for (i = 0; i < cert_type_num; i++)
{
unsigned char cert_type = p[i];
char *cname;
switch(cert_type)
{
case TLS_CT_RSA_SIGN:
cname = "RSA sign";
break;
case TLS_CT_DSS_SIGN:
cname = "DSA sign";
break;
case TLS_CT_RSA_FIXED_DH:
cname = "RSA fixed DH";
break;
case TLS_CT_DSS_FIXED_DH:
cname = "DSS fixed DH";
break;
case TLS_CT_ECDSA_SIGN:
cname = "ECDSA sign";
break;
case TLS_CT_RSA_FIXED_ECDH:
cname = "RSA fixed ECDH";
break;
case TLS_CT_ECDSA_FIXED_ECDH:
cname = "ECDSA fixed ECDH";
break;
case TLS_CT_GOST94_SIGN:
cname = "GOST94 Sign";
break;
case TLS_CT_GOST01_SIGN:
cname = "GOST01 Sign";
break;
default:
cname = NULL;
}
if (i)
BIO_puts(bio, ", ");
if (cname)
BIO_puts(bio, cname);
else
BIO_printf(bio, "UNKNOWN (%d),", cert_type);
}
BIO_puts(bio, "\n");
}
static int do_print_sigalgs(BIO *out, SSL *s, int shared)
{
int i, nsig, client;
client = SSL_is_server(s) ? 0 : 1;
if (shared)
nsig = SSL_get_shared_sigalgs(s, -1, NULL, NULL, NULL,
NULL, NULL);
else
nsig = SSL_get_sigalgs(s, -1, NULL, NULL, NULL, NULL, NULL);
if (nsig == 0)
return 1;
if (shared)
BIO_puts(out, "Shared ");
if (client)
BIO_puts(out, "Requested ");
BIO_puts(out, "Signature Algorithms: ");
for (i = 0; i < nsig; i++)
{
int hash_nid, sign_nid;
unsigned char rhash, rsign;
const char *sstr = NULL;
if (shared)
SSL_get_shared_sigalgs(s, i, &sign_nid, &hash_nid, NULL,
&rsign, &rhash);
else
SSL_get_sigalgs(s, i, &sign_nid, &hash_nid, NULL,
&rsign, &rhash);
if (i)
BIO_puts(out, ":");
if (sign_nid == EVP_PKEY_RSA)
sstr = "RSA";
else if(sign_nid == EVP_PKEY_DSA)
sstr = "DSA";
else if(sign_nid == EVP_PKEY_EC)
sstr = "ECDSA";
if (sstr)
BIO_printf(out,"%s+", sstr);
else
BIO_printf(out,"0x%02X+", (int)rsign);
if (hash_nid != NID_undef)
BIO_printf(out, "%s", OBJ_nid2sn(hash_nid));
else
BIO_printf(out,"0x%02X", (int)rhash);
}
BIO_puts(out, "\n");
return 1;
}
int ssl_print_sigalgs(BIO *out, SSL *s)
{
int mdnid;
if (!SSL_is_server(s))
ssl_print_client_cert_types(out, s);
do_print_sigalgs(out, s, 0);
do_print_sigalgs(out, s, 1);
if (SSL_get_peer_signature_nid(s, &mdnid))
BIO_printf(out, "Peer signing digest: %s\n", OBJ_nid2sn(mdnid));
return 1;
}
#ifndef OPENSSL_NO_EC
int ssl_print_point_formats(BIO *out, SSL *s)
{
int i, nformats;
const char *pformats;
nformats = SSL_get0_ec_point_formats(s, &pformats);
if (nformats <= 0)
return 1;
BIO_puts(out, "Supported Elliptic Curve Point Formats: ");
for (i = 0; i < nformats; i++, pformats++)
{
if (i)
BIO_puts(out, ":");
switch(*pformats)
{
case TLSEXT_ECPOINTFORMAT_uncompressed:
BIO_puts(out, "uncompressed");
break;
case TLSEXT_ECPOINTFORMAT_ansiX962_compressed_prime:
BIO_puts(out, "ansiX962_compressed_prime");
break;
case TLSEXT_ECPOINTFORMAT_ansiX962_compressed_char2:
BIO_puts(out, "ansiX962_compressed_char2");
break;
default:
BIO_printf(out, "unknown(%d)", (int)*pformats);
break;
}
}
if (nformats <= 0)
BIO_puts(out, "NONE");
BIO_puts(out, "\n");
return 1;
}
int ssl_print_curves(BIO *out, SSL *s, int noshared)
{
int i, ncurves, *curves, nid;
const char *cname;
ncurves = SSL_get1_curves(s, NULL);
if (ncurves <= 0)
return 1;
curves = OPENSSL_malloc(ncurves * sizeof(int));
SSL_get1_curves(s, curves);
BIO_puts(out, "Supported Elliptic Curves: ");
for (i = 0; i < ncurves; i++)
{
if (i)
BIO_puts(out, ":");
nid = curves[i];
/* If unrecognised print out hex version */
if (nid & TLSEXT_nid_unknown)
BIO_printf(out, "0x%04X", nid & 0xFFFF);
else
{
/* Use NIST name for curve if it exists */
cname = EC_curve_nid2nist(nid);
if (!cname)
cname = OBJ_nid2sn(nid);
BIO_printf(out, "%s", cname);
}
}
if (ncurves == 0)
BIO_puts(out, "NONE");
OPENSSL_free(curves);
if (noshared)
{
BIO_puts(out, "\n");
return 1;
}
BIO_puts(out, "\nShared Elliptic curves: ");
ncurves = SSL_get_shared_curve(s, -1);
for (i = 0; i < ncurves; i++)
{
if (i)
BIO_puts(out, ":");
nid = SSL_get_shared_curve(s, i);
cname = EC_curve_nid2nist(nid);
if (!cname)
cname = OBJ_nid2sn(nid);
BIO_printf(out, "%s", cname);
}
if (ncurves == 0)
BIO_puts(out, "NONE");
BIO_puts(out, "\n");
return 1;
}
#endif
int ssl_print_tmp_key(BIO *out, SSL *s)
{
EVP_PKEY *key;
if (!SSL_get_server_tmp_key(s, &key))
return 1;
BIO_puts(out, "Server Temp Key: ");
switch (EVP_PKEY_id(key))
{
case EVP_PKEY_RSA:
BIO_printf(out, "RSA, %d bits\n", EVP_PKEY_bits(key));
break;
case EVP_PKEY_DH:
BIO_printf(out, "DH, %d bits\n", EVP_PKEY_bits(key));
break;
#ifndef OPENSSL_NO_ECDH
case EVP_PKEY_EC:
{
EC_KEY *ec = EVP_PKEY_get1_EC_KEY(key);
int nid;
const char *cname;
nid = EC_GROUP_get_curve_name(EC_KEY_get0_group(ec));
EC_KEY_free(ec);
cname = EC_curve_nid2nist(nid);
if (!cname)
cname = OBJ_nid2sn(nid);
BIO_printf(out, "ECDH, %s, %d bits\n",
cname, EVP_PKEY_bits(key));
}
#endif
}
EVP_PKEY_free(key);
return 1;
}
long MS_CALLBACK bio_dump_callback(BIO *bio, int cmd, const char *argp,
int argi, long argl, long ret)
{
BIO *out;
out=(BIO *)BIO_get_callback_arg(bio);
if (out == NULL) return(ret);
if (cmd == (BIO_CB_READ|BIO_CB_RETURN))
{
BIO_printf(out,"read from %p [%p] (%lu bytes => %ld (0x%lX))\n",
(void *)bio,argp,(unsigned long)argi,ret,ret);
BIO_dump(out,argp,(int)ret);
return(ret);
}
else if (cmd == (BIO_CB_WRITE|BIO_CB_RETURN))
{
BIO_printf(out,"write to %p [%p] (%lu bytes => %ld (0x%lX))\n",
(void *)bio,argp,(unsigned long)argi,ret,ret);
BIO_dump(out,argp,(int)ret);
}
return(ret);
}
void MS_CALLBACK apps_ssl_info_callback(const SSL *s, int where, int ret)
{
const char *str;
int w;
w=where& ~SSL_ST_MASK;
if (w & SSL_ST_CONNECT) str="SSL_connect";
else if (w & SSL_ST_ACCEPT) str="SSL_accept";
else str="undefined";
if (where & SSL_CB_LOOP)
{
BIO_printf(bio_err,"%s:%s\n",str,SSL_state_string_long(s));
}
else if (where & SSL_CB_ALERT)
{
str=(where & SSL_CB_READ)?"read":"write";
BIO_printf(bio_err,"SSL3 alert %s:%s:%s\n",
str,
SSL_alert_type_string_long(ret),
SSL_alert_desc_string_long(ret));
}
else if (where & SSL_CB_EXIT)
{
if (ret == 0)
BIO_printf(bio_err,"%s:failed in %s\n",
str,SSL_state_string_long(s));
else if (ret < 0)
{
BIO_printf(bio_err,"%s:error in %s\n",
str,SSL_state_string_long(s));
}
}
}
void MS_CALLBACK msg_cb(int write_p, int version, int content_type, const void *buf, size_t len, SSL *ssl, void *arg)
{
BIO *bio = arg;
const char *str_write_p, *str_version, *str_content_type = "", *str_details1 = "", *str_details2= "";
str_write_p = write_p ? ">>>" : "<<<";
switch (version)
{
case SSL2_VERSION:
str_version = "SSL 2.0";
break;
case SSL3_VERSION:
str_version = "SSL 3.0 ";
break;
case TLS1_VERSION:
str_version = "TLS 1.0 ";
break;
case TLS1_1_VERSION:
str_version = "TLS 1.1 ";
break;
case TLS1_2_VERSION:
str_version = "TLS 1.2 ";
break;
case DTLS1_VERSION:
str_version = "DTLS 1.0 ";
break;
case DTLS1_BAD_VER:
str_version = "DTLS 1.0 (bad) ";
break;
default:
str_version = "???";
}
if (version == SSL2_VERSION)
{
str_details1 = "???";
if (len > 0)
{
switch (((const unsigned char*)buf)[0])
{
case 0:
str_details1 = ", ERROR:";
str_details2 = " ???";
if (len >= 3)
{
unsigned err = (((const unsigned char*)buf)[1]<<8) + ((const unsigned char*)buf)[2];
switch (err)
{
case 0x0001:
str_details2 = " NO-CIPHER-ERROR";
break;
case 0x0002:
str_details2 = " NO-CERTIFICATE-ERROR";
break;
case 0x0004:
str_details2 = " BAD-CERTIFICATE-ERROR";
break;
case 0x0006:
str_details2 = " UNSUPPORTED-CERTIFICATE-TYPE-ERROR";
break;
}
}
break;
case 1:
str_details1 = ", CLIENT-HELLO";
break;
case 2:
str_details1 = ", CLIENT-MASTER-KEY";
break;
case 3:
str_details1 = ", CLIENT-FINISHED";
break;
case 4:
str_details1 = ", SERVER-HELLO";
break;
case 5:
str_details1 = ", SERVER-VERIFY";
break;
case 6:
str_details1 = ", SERVER-FINISHED";
break;
case 7:
str_details1 = ", REQUEST-CERTIFICATE";
break;
case 8:
str_details1 = ", CLIENT-CERTIFICATE";
break;
}
}
}
if (version == SSL3_VERSION ||
version == TLS1_VERSION ||
version == TLS1_1_VERSION ||
version == TLS1_2_VERSION ||
version == DTLS1_VERSION ||
version == DTLS1_BAD_VER)
{
switch (content_type)
{
case 20:
str_content_type = "ChangeCipherSpec";
break;
case 21:
str_content_type = "Alert";
break;
case 22:
str_content_type = "Handshake";
break;
}
if (content_type == 21) /* Alert */
{
str_details1 = ", ???";
if (len == 2)
{
switch (((const unsigned char*)buf)[0])
{
case 1:
str_details1 = ", warning";
break;
case 2:
str_details1 = ", fatal";
break;
}
str_details2 = " ???";
switch (((const unsigned char*)buf)[1])
{
case 0:
str_details2 = " close_notify";
break;
case 10:
str_details2 = " unexpected_message";
break;
case 20:
str_details2 = " bad_record_mac";
break;
case 21:
str_details2 = " decryption_failed";
break;
case 22:
str_details2 = " record_overflow";
break;
case 30:
str_details2 = " decompression_failure";
break;
case 40:
str_details2 = " handshake_failure";
break;
case 42:
str_details2 = " bad_certificate";
break;
case 43:
str_details2 = " unsupported_certificate";
break;
case 44:
str_details2 = " certificate_revoked";
break;
case 45:
str_details2 = " certificate_expired";
break;
case 46:
str_details2 = " certificate_unknown";
break;
case 47:
str_details2 = " illegal_parameter";
break;
case 48:
str_details2 = " unknown_ca";
break;
case 49:
str_details2 = " access_denied";
break;
case 50:
str_details2 = " decode_error";
break;
case 51:
str_details2 = " decrypt_error";
break;
case 60:
str_details2 = " export_restriction";
break;
case 70:
str_details2 = " protocol_version";
break;
case 71:
str_details2 = " insufficient_security";
break;
case 80:
str_details2 = " internal_error";
break;
case 90:
str_details2 = " user_canceled";
break;
case 100:
str_details2 = " no_renegotiation";
break;
case 110:
str_details2 = " unsupported_extension";
break;
case 111:
str_details2 = " certificate_unobtainable";
break;
case 112:
str_details2 = " unrecognized_name";
break;
case 113:
str_details2 = " bad_certificate_status_response";
break;
case 114:
str_details2 = " bad_certificate_hash_value";
break;
case 115:
str_details2 = " unknown_psk_identity";
break;
}
}
}
if (content_type == 22) /* Handshake */
{
str_details1 = "???";
if (len > 0)
{
switch (((const unsigned char*)buf)[0])
{
case 0:
str_details1 = ", HelloRequest";
break;
case 1:
str_details1 = ", ClientHello";
break;
case 2:
str_details1 = ", ServerHello";
break;
case 3:
str_details1 = ", HelloVerifyRequest";
break;
case 11:
str_details1 = ", Certificate";
break;
case 12:
str_details1 = ", ServerKeyExchange";
break;
case 13:
str_details1 = ", CertificateRequest";
break;
case 14:
str_details1 = ", ServerHelloDone";
break;
case 15:
str_details1 = ", CertificateVerify";
break;
case 16:
str_details1 = ", ClientKeyExchange";
break;
case 20:
str_details1 = ", Finished";
break;
case 23:
str_details1 = ", SupplementalData";
break;
}
}
}
#ifndef OPENSSL_NO_HEARTBEATS
if (content_type == 24) /* Heartbeat */
{
str_details1 = ", Heartbeat";
if (len > 0)
{
switch (((const unsigned char*)buf)[0])
{
case 1:
str_details1 = ", HeartbeatRequest";
break;
case 2:
str_details1 = ", HeartbeatResponse";
break;
}
}
}
#endif
}
BIO_printf(bio, "%s %s%s [length %04lx]%s%s\n", str_write_p, str_version, str_content_type, (unsigned long)len, str_details1, str_details2);
if (len > 0)
{
size_t num, i;
BIO_printf(bio, " ");
num = len;
#if 0
if (num > 16)
num = 16;
#endif
for (i = 0; i < num; i++)
{
if (i % 16 == 0 && i > 0)
BIO_printf(bio, "\n ");
BIO_printf(bio, " %02x", ((const unsigned char*)buf)[i]);
}
if (i < len)
BIO_printf(bio, " ...");
BIO_printf(bio, "\n");
}
(void)BIO_flush(bio);
}
void MS_CALLBACK tlsext_cb(SSL *s, int client_server, int type,
unsigned char *data, int len,
void *arg)
{
BIO *bio = arg;
char *extname;
switch(type)
{
case TLSEXT_TYPE_server_name:
extname = "server name";
break;
case TLSEXT_TYPE_max_fragment_length:
extname = "max fragment length";
break;
case TLSEXT_TYPE_client_certificate_url:
extname = "client certificate URL";
break;
case TLSEXT_TYPE_trusted_ca_keys:
extname = "trusted CA keys";
break;
case TLSEXT_TYPE_truncated_hmac:
extname = "truncated HMAC";
break;
case TLSEXT_TYPE_status_request:
extname = "status request";
break;
case TLSEXT_TYPE_user_mapping:
extname = "user mapping";
break;
case TLSEXT_TYPE_client_authz:
extname = "client authz";
break;
case TLSEXT_TYPE_server_authz:
extname = "server authz";
break;
case TLSEXT_TYPE_cert_type:
extname = "cert type";
break;
case TLSEXT_TYPE_elliptic_curves:
extname = "elliptic curves";
break;
case TLSEXT_TYPE_ec_point_formats:
extname = "EC point formats";
break;
case TLSEXT_TYPE_srp:
extname = "SRP";
break;
case TLSEXT_TYPE_signature_algorithms:
extname = "signature algorithms";
break;
case TLSEXT_TYPE_use_srtp:
extname = "use SRTP";
break;
case TLSEXT_TYPE_heartbeat:
extname = "heartbeat";
break;
case TLSEXT_TYPE_session_ticket:
extname = "session ticket";
break;
case TLSEXT_TYPE_renegotiate:
extname = "renegotiation info";
break;
#ifdef TLSEXT_TYPE_opaque_prf_input
case TLSEXT_TYPE_opaque_prf_input:
extname = "opaque PRF input";
break;
#endif
#ifdef TLSEXT_TYPE_next_proto_neg
case TLSEXT_TYPE_next_proto_neg:
extname = "next protocol";
break;
#endif
default:
extname = "unknown";
break;
}
BIO_printf(bio, "TLS %s extension \"%s\" (id=%d), len=%d\n",
client_server ? "server": "client",
extname, type, len);
BIO_dump(bio, (char *)data, len);
(void)BIO_flush(bio);
}
int MS_CALLBACK generate_cookie_callback(SSL *ssl, unsigned char *cookie, unsigned int *cookie_len)
{
unsigned char *buffer, result[EVP_MAX_MD_SIZE];
unsigned int length, resultlength;
union {
struct sockaddr sa;
struct sockaddr_in s4;
#if OPENSSL_USE_IPV6
struct sockaddr_in6 s6;
#endif
} peer;
/* Initialize a random secret */
if (!cookie_initialized)
{
if (!RAND_bytes(cookie_secret, COOKIE_SECRET_LENGTH))
{
BIO_printf(bio_err,"error setting random cookie secret\n");
return 0;
}
cookie_initialized = 1;
}
/* Read peer information */
(void)BIO_dgram_get_peer(SSL_get_rbio(ssl), &peer);
/* Create buffer with peer's address and port */
length = 0;
switch (peer.sa.sa_family)
{
case AF_INET:
length += sizeof(struct in_addr);
length += sizeof(peer.s4.sin_port);
break;
#if OPENSSL_USE_IPV6
case AF_INET6:
length += sizeof(struct in6_addr);
length += sizeof(peer.s6.sin6_port);
break;
#endif
default:
OPENSSL_assert(0);
break;
}
buffer = OPENSSL_malloc(length);
if (buffer == NULL)
{
BIO_printf(bio_err,"out of memory\n");
return 0;
}
switch (peer.sa.sa_family)
{
case AF_INET:
memcpy(buffer,
&peer.s4.sin_port,
sizeof(peer.s4.sin_port));
memcpy(buffer + sizeof(peer.s4.sin_port),
&peer.s4.sin_addr,
sizeof(struct in_addr));
break;
#if OPENSSL_USE_IPV6
case AF_INET6:
memcpy(buffer,
&peer.s6.sin6_port,
sizeof(peer.s6.sin6_port));
memcpy(buffer + sizeof(peer.s6.sin6_port),
&peer.s6.sin6_addr,
sizeof(struct in6_addr));
break;
#endif
default:
OPENSSL_assert(0);
break;
}
/* Calculate HMAC of buffer using the secret */
HMAC(EVP_sha1(), cookie_secret, COOKIE_SECRET_LENGTH,
buffer, length, result, &resultlength);
OPENSSL_free(buffer);
memcpy(cookie, result, resultlength);
*cookie_len = resultlength;
return 1;
}
int MS_CALLBACK verify_cookie_callback(SSL *ssl, unsigned char *cookie, unsigned int cookie_len)
{
unsigned char *buffer, result[EVP_MAX_MD_SIZE];
unsigned int length, resultlength;
union {
struct sockaddr sa;
struct sockaddr_in s4;
#if OPENSSL_USE_IPV6
struct sockaddr_in6 s6;
#endif
} peer;
/* If secret isn't initialized yet, the cookie can't be valid */
if (!cookie_initialized)
return 0;
/* Read peer information */
(void)BIO_dgram_get_peer(SSL_get_rbio(ssl), &peer);
/* Create buffer with peer's address and port */
length = 0;
switch (peer.sa.sa_family)
{
case AF_INET:
length += sizeof(struct in_addr);
length += sizeof(peer.s4.sin_port);
break;
#if OPENSSL_USE_IPV6
case AF_INET6:
length += sizeof(struct in6_addr);
length += sizeof(peer.s6.sin6_port);
break;
#endif
default:
OPENSSL_assert(0);
break;
}
buffer = OPENSSL_malloc(length);
if (buffer == NULL)
{
BIO_printf(bio_err,"out of memory\n");
return 0;
}
switch (peer.sa.sa_family)
{
case AF_INET:
memcpy(buffer,
&peer.s4.sin_port,
sizeof(peer.s4.sin_port));
memcpy(buffer + sizeof(peer.s4.sin_port),
&peer.s4.sin_addr,
sizeof(struct in_addr));
break;
#if OPENSSL_USE_IPV6
case AF_INET6:
memcpy(buffer,
&peer.s6.sin6_port,
sizeof(peer.s6.sin6_port));
memcpy(buffer + sizeof(peer.s6.sin6_port),
&peer.s6.sin6_addr,
sizeof(struct in6_addr));
break;
#endif
default:
OPENSSL_assert(0);
break;
}
/* Calculate HMAC of buffer using the secret */
HMAC(EVP_sha1(), cookie_secret, COOKIE_SECRET_LENGTH,
buffer, length, result, &resultlength);
OPENSSL_free(buffer);
if (cookie_len == resultlength && memcmp(result, cookie, resultlength) == 0)
return 1;
return 0;
}
/* Example of extended certificate handling. Where the standard support
* of one certificate per algorithm is not sufficient an application
* can decide which certificate(s) to use at runtime based on whatever
* criteria it deems appropriate.
*/
/* Linked list of certificates, keys and chains */
struct ssl_excert_st
{
int certform;
const char *certfile;
int keyform;
const char *keyfile;
const char *chainfile;
X509 *cert;
EVP_PKEY *key;
STACK_OF(X509) *chain;
int build_chain;
struct ssl_excert_st *next, *prev;
};
struct chain_flags
{
int flag;
const char *name;
};
struct chain_flags chain_flags_list[] =
{
{CERT_PKEY_VALID, "Overall Validity"},
{CERT_PKEY_SIGN, "Sign with EE key"},
{CERT_PKEY_EE_SIGNATURE, "EE signature"},
{CERT_PKEY_CA_SIGNATURE, "CA signature"},
{CERT_PKEY_EE_PARAM, "EE key parameters"},
{CERT_PKEY_CA_PARAM, "CA key parameters"},
{CERT_PKEY_EXPLICIT_SIGN, "Explicity sign with EE key"},
{CERT_PKEY_ISSUER_NAME, "Issuer Name"},
{CERT_PKEY_CERT_TYPE, "Certificate Type"},
{0, NULL}
};
static void print_chain_flags(BIO *out, int flags)
{
struct chain_flags *ctmp = chain_flags_list;
while(ctmp->name)
{
BIO_printf(out, "\t%s: %s\n", ctmp->name,
flags & ctmp->flag ? "OK" : "NOT OK");
ctmp++;
}
}
/* Very basic selection callback: just use any certificate chain
* reported as valid. More sophisticated could prioritise according
* to local policy.
*/
static int set_cert_cb(SSL *ssl, void *arg)
{
int i, rv;
SSL_EXCERT *exc = arg;
#ifdef CERT_CB_TEST_RETRY
static int retry_cnt;
if (retry_cnt < 5)
{
retry_cnt++;
fprintf(stderr, "Certificate callback retry test: count %d\n",
retry_cnt);
return -1;
}
#endif
SSL_certs_clear(ssl);
if (!exc)
return 1;
/* Go to end of list and traverse backwards since we prepend
* newer entries this retains the original order.
*/
while (exc->next)
exc = exc->next;
i = 0;
while(exc)
{
i++;
rv = SSL_check_chain(ssl, exc->cert, exc->key, exc->chain);
BIO_printf(bio_err, "Checking cert chain %d:\nSubject: ", i);
X509_NAME_print_ex(bio_err, X509_get_subject_name(exc->cert), 0,
XN_FLAG_ONELINE);
BIO_puts(bio_err, "\n");
print_chain_flags(bio_err, rv);
if (rv & CERT_PKEY_VALID)
{
SSL_use_certificate(ssl, exc->cert);
SSL_use_PrivateKey(ssl, exc->key);
/* NB: we wouldn't normally do this as it is
* not efficient building chains on each connection
* better to cache the chain in advance.
*/
if (exc->build_chain)
{
if (!SSL_build_cert_chain(ssl, 0))
return 0;
}
else if (exc->chain)
SSL_set1_chain(ssl, exc->chain);
}
exc = exc->prev;
}
return 1;
}
void ssl_ctx_set_excert(SSL_CTX *ctx, SSL_EXCERT *exc)
{
SSL_CTX_set_cert_cb(ctx, set_cert_cb, exc);
}
static int ssl_excert_prepend(SSL_EXCERT **pexc)
{
SSL_EXCERT *exc;
exc = OPENSSL_malloc(sizeof(SSL_EXCERT));
if (!exc)
return 0;
exc->certfile = NULL;
exc->keyfile = NULL;
exc->chainfile = NULL;
exc->cert = NULL;
exc->key = NULL;
exc->chain = NULL;
exc->prev = NULL;
exc->build_chain = 0;
exc->next = *pexc;
*pexc = exc;
if (exc->next)
{
exc->certform = exc->next->certform;
exc->keyform = exc->next->keyform;
exc->next->prev = exc;
}
else
{
exc->certform = FORMAT_PEM;
exc->keyform = FORMAT_PEM;
}
return 1;
}
void ssl_excert_free(SSL_EXCERT *exc)
{
SSL_EXCERT *curr;
while (exc)
{
if (exc->cert)
X509_free(exc->cert);
if (exc->key)
EVP_PKEY_free(exc->key);
if (exc->chain)
sk_X509_pop_free(exc->chain, X509_free);
curr = exc;
exc = exc->next;
OPENSSL_free(curr);
}
}
int load_excert(SSL_EXCERT **pexc, BIO *err)
{
SSL_EXCERT *exc = *pexc;
if (!exc)
return 1;
/* If nothing in list, free and set to NULL */
if (!exc->certfile && !exc->next)
{
ssl_excert_free(exc);
*pexc = NULL;
return 1;
}
for(; exc; exc=exc->next)
{
if (!exc->certfile)
{
BIO_printf(err, "Missing filename\n");
return 0;
}
exc->cert = load_cert(err, exc->certfile, exc->certform,
NULL, NULL, "Server Certificate");
if (!exc->cert)
return 0;
if (exc->keyfile)
exc->keyfile = exc->certfile;
exc->key = load_key(err, exc->certfile, exc->certform, 0,
NULL, NULL, "Server Certificate");
if (!exc->key)
return 0;
if (exc->chainfile)
{
exc->chain = load_certs(err,
exc->chainfile, FORMAT_PEM,
NULL, NULL,
"Server Chain");
if (!exc->chainfile)
return 0;
}
}
return 1;
}
int args_excert(char ***pargs, int *pargc,
int *badarg, BIO *err, SSL_EXCERT **pexc)
{
char *arg = **pargs, *argn = (*pargs)[1];
SSL_EXCERT *exc = *pexc;
int narg = 2;
if (!exc)
{
if (ssl_excert_prepend(&exc))
*pexc = exc;
else
{
BIO_printf(err, "Error initialising xcert\n");
*badarg = 1;
goto err;
}
}
if (strcmp(arg, "-xcert") == 0)
{
if (!argn)
{
*badarg = 1;
return 1;
}
if (exc->certfile && !ssl_excert_prepend(&exc))
{
BIO_printf(err, "Error adding xcert\n");
*badarg = 1;
goto err;
}
exc->certfile = argn;
}
else if (strcmp(arg,"-xkey") == 0)
{
if (!argn)
{
*badarg = 1;
return 1;
}
if (exc->keyfile)
{
BIO_printf(err, "Key already specified\n");
*badarg = 1;
return 1;
}
exc->keyfile = argn;
}
else if (strcmp(arg,"-xchain") == 0)
{
if (!argn)
{
*badarg = 1;
return 1;
}
if (exc->chainfile)
{
BIO_printf(err, "Chain already specified\n");
*badarg = 1;
return 1;
}
exc->chainfile = argn;
}
else if (strcmp(arg,"-xchain_build") == 0)
{
narg = 1;
exc->build_chain = 1;
}
else if (strcmp(arg,"-xcertform") == 0)
{
if (!argn)
{
*badarg = 1;
goto err;
}
exc->certform = str2fmt(argn);
}
else if (strcmp(arg,"-xkeyform") == 0)
{
if (!argn)
{
*badarg = 1;
goto err;
}
exc->keyform = str2fmt(argn);
}
else
return 0;
(*pargs) += narg;
if (pargc)
*pargc -= narg;
*pexc = exc;
return 1;
err:
ERR_print_errors(err);
ssl_excert_free(exc);
*pexc = NULL;
return 1;
}
static void print_raw_cipherlist(BIO *bio, SSL *s)
{
const unsigned char *rlist;
static const unsigned char scsv_id[] = {0, 0, 0xFF};
size_t i, rlistlen, num;
if (!SSL_is_server(s))
return;
num = SSL_get0_raw_cipherlist(s, NULL);
rlistlen = SSL_get0_raw_cipherlist(s, &rlist);
BIO_puts(bio, "Client cipher list: ");
for (i = 0; i < rlistlen; i += num, rlist += num)
{
const SSL_CIPHER *c = SSL_CIPHER_find(s, rlist);
if (i)
BIO_puts(bio, ":");
if (c)
BIO_puts(bio, SSL_CIPHER_get_name(c));
else if (!memcmp(rlist, scsv_id - num + 3, num))
BIO_puts(bio, "SCSV");
else
{
size_t j;
BIO_puts(bio, "0x");
for (j = 0; j < num; j++)
BIO_printf(bio, "%02X", rlist[j]);
}
}
BIO_puts(bio, "\n");
}
void print_ssl_summary(BIO *bio, SSL *s)
{
const SSL_CIPHER *c;
X509 *peer;
/*const char *pnam = SSL_is_server(s) ? "client" : "server";*/
BIO_printf(bio, "Protocol version: %s\n", SSL_get_version(s));
print_raw_cipherlist(bio, s);
c = SSL_get_current_cipher(s);
BIO_printf(bio,"Ciphersuite: %s\n", SSL_CIPHER_get_name(c));
do_print_sigalgs(bio, s, 0);
peer = SSL_get_peer_certificate(s);
if (peer)
{
int nid;
BIO_puts(bio, "Peer certificate: ");
X509_NAME_print_ex(bio, X509_get_subject_name(peer),
0, XN_FLAG_ONELINE);
BIO_puts(bio, "\n");
if (SSL_get_peer_signature_nid(s, &nid))
BIO_printf(bio, "Hash used: %s\n", OBJ_nid2sn(nid));
}
else
BIO_puts(bio, "No peer certificate\n");
if (peer)
X509_free(peer);
#ifndef OPENSSL_NO_EC
ssl_print_point_formats(bio, s);
if (SSL_is_server(s))
ssl_print_curves(bio, s, 1);
else
ssl_print_tmp_key(bio, s);
#else
if (!SSL_is_server(s))
ssl_print_tmp_key(bio, s);
#endif
}
int args_ssl(char ***pargs, int *pargc, SSL_CONF_CTX *cctx,
int *badarg, BIO *err, STACK_OF(OPENSSL_STRING) **pstr)
{
char *arg = **pargs, *argn = (*pargs)[1];
int rv;
/* Attempt to run SSL configuration command */
rv = SSL_CONF_cmd_argv(cctx, pargc, pargs);
/* If parameter not recognised just return */
if (rv == 0)
return 0;
/* see if missing argument error */
if (rv == -3)
{
BIO_printf(err, "%s needs an argument\n", arg);
*badarg = 1;
goto end;
}
/* Check for some other error */
if (rv < 0)
{
BIO_printf(err, "Error with command: \"%s %s\"\n",
arg, argn ? argn : "");
*badarg = 1;
goto end;
}
/* Store command and argument */
/* If only one argument processed store value as NULL */
if (rv == 1)
argn = NULL;
if (!*pstr)
*pstr = sk_OPENSSL_STRING_new_null();
if (!*pstr || !sk_OPENSSL_STRING_push(*pstr, arg) ||
!sk_OPENSSL_STRING_push(*pstr, argn))
{
BIO_puts(err, "Memory allocation failure\n");
goto end;
}
end:
if (*badarg)
ERR_print_errors(err);
return 1;
}
int args_ssl_call(SSL_CTX *ctx, BIO *err, SSL_CONF_CTX *cctx,
STACK_OF(OPENSSL_STRING) *str, int no_ecdhe, int no_jpake)
{
int i;
SSL_CONF_CTX_set_ssl_ctx(cctx, ctx);
for (i = 0; i < sk_OPENSSL_STRING_num(str); i+= 2)
{
const char *param = sk_OPENSSL_STRING_value(str, i);
const char *value = sk_OPENSSL_STRING_value(str, i + 1);
/* If no_ecdhe or named curve already specified don't need
* a default.
*/
if (!no_ecdhe && !strcmp(param, "-named_curve"))
no_ecdhe = 1;
#ifndef OPENSSL_NO_JPAKE
if (!no_jpake && !strcmp(param, "-cipher"))
{
BIO_puts(err, "JPAKE sets cipher to PSK\n");
return 0;
}
#endif
if (SSL_CONF_cmd(cctx, param, value) <= 0)
{
BIO_printf(err, "Error with command: \"%s %s\"\n",
param, value ? value : "");
ERR_print_errors(err);
return 0;
}
}
/* This is a special case to keep existing s_server functionality:
* if we don't have any curve specified *and* we haven't disabled
* ECDHE then use P-256.
*/
if (!no_ecdhe)
{
if (SSL_CONF_cmd(cctx, "-named_curve", "P-256") <= 0)
{
BIO_puts(err, "Error setting EC curve\n");
ERR_print_errors(err);
return 0;
}
}
#ifndef OPENSSL_NO_JPAKE
if (!no_jpake)
{
if (SSL_CONF_cmd(cctx, "-cipher", "PSK") <= 0)
{
BIO_puts(err, "Error setting cipher to PSK\n");
ERR_print_errors(err);
return 0;
}
}
#endif
if (!SSL_CONF_CTX_finish(cctx))
{
BIO_puts(err, "Error finishing context\n");
ERR_print_errors(err);
return 0;
}
return 1;
}
static int add_crls_store(X509_STORE *st, STACK_OF(X509_CRL) *crls)
{
X509_CRL *crl;
int i;
for (i = 0; i < sk_X509_CRL_num(crls); i++)
{
crl = sk_X509_CRL_value(crls, i);
X509_STORE_add_crl(st, crl);
}
return 1;
}
int ssl_ctx_add_crls(SSL_CTX *ctx, STACK_OF(X509_CRL) *crls, int crl_download)
{
X509_STORE *st;
st = SSL_CTX_get_cert_store(ctx);
add_crls_store(st, crls);
if (crl_download)
store_setup_crl_download(st);
return 1;
}
int ssl_load_stores(SSL_CTX *ctx,
const char *vfyCApath, const char *vfyCAfile,
const char *chCApath, const char *chCAfile,
STACK_OF(X509_CRL) *crls, int crl_download)
{
X509_STORE *vfy = NULL, *ch = NULL;
int rv = 0;
if (vfyCApath || vfyCAfile)
{
vfy = X509_STORE_new();
if (!X509_STORE_load_locations(vfy, vfyCAfile, vfyCApath))
goto err;
add_crls_store(vfy, crls);
SSL_CTX_set1_verify_cert_store(ctx, vfy);
if (crl_download)
store_setup_crl_download(vfy);
}
if (chCApath || chCAfile)
{
ch = X509_STORE_new();
if (!X509_STORE_load_locations(ch, chCAfile, chCApath))
goto err;
SSL_CTX_set1_chain_cert_store(ctx, ch);
}
rv = 1;
err:
if (vfy)
X509_STORE_free(vfy);
if (ch)
X509_STORE_free(ch);
return rv;
}
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