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8cafe9e8bf
openssl/ssl/ssl_rsa.c
Dr. Stephen Henson 8cafe9e8bf Use consistent function naming. 
Instead of SSL_CTX_set_custom_cli_ext and SSL_CTX_set_custom_srv_ext
use SSL_CTX_add_client_custom_ext and SSL_CTX_add_server_custom_ext.
Reviewed-by: Emilia Käsper <emilia@openssl.org>
2014-08-28 17:06:53 +01:00

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/* ssl/ssl_rsa.c */
/* 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.]
*/
#include <stdio.h>
#include "ssl_locl.h"
#include <openssl/bio.h>
#include <openssl/objects.h>
#include <openssl/evp.h>
#include <openssl/x509.h>
#include <openssl/pem.h>
static int ssl_set_cert(CERT *c, X509 *x509);
static int ssl_set_pkey(CERT *c, EVP_PKEY *pkey);
int SSL_use_certificate(SSL *ssl, X509 *x)
{
int rv;
if (x == NULL)
{
SSLerr(SSL_F_SSL_USE_CERTIFICATE,ERR_R_PASSED_NULL_PARAMETER);
return(0);
}
rv = ssl_security_cert(ssl, NULL, x, 0, 1);
if (rv != 1)
{
SSLerr(SSL_F_SSL_USE_CERTIFICATE, rv);
return 0;
}
if (!ssl_cert_inst(&ssl->cert))
{
SSLerr(SSL_F_SSL_USE_CERTIFICATE,ERR_R_MALLOC_FAILURE);
return(0);
}
return(ssl_set_cert(ssl->cert,x));
}
#ifndef OPENSSL_NO_STDIO
int SSL_use_certificate_file(SSL *ssl, const char *file, int type)
{
int j;
BIO *in;
int ret=0;
X509 *x=NULL;
in=BIO_new(BIO_s_file_internal());
if (in == NULL)
{
SSLerr(SSL_F_SSL_USE_CERTIFICATE_FILE,ERR_R_BUF_LIB);
goto end;
}
if (BIO_read_filename(in,file) <= 0)
{
SSLerr(SSL_F_SSL_USE_CERTIFICATE_FILE,ERR_R_SYS_LIB);
goto end;
}
if (type == SSL_FILETYPE_ASN1)
{
j=ERR_R_ASN1_LIB;
x=d2i_X509_bio(in,NULL);
}
else if (type == SSL_FILETYPE_PEM)
{
j=ERR_R_PEM_LIB;
x=PEM_read_bio_X509(in,NULL,ssl->ctx->default_passwd_callback,ssl->ctx->default_passwd_callback_userdata);
}
else
{
SSLerr(SSL_F_SSL_USE_CERTIFICATE_FILE,SSL_R_BAD_SSL_FILETYPE);
goto end;
}
if (x == NULL)
{
SSLerr(SSL_F_SSL_USE_CERTIFICATE_FILE,j);
goto end;
}
ret=SSL_use_certificate(ssl,x);
end:
if (x != NULL) X509_free(x);
if (in != NULL) BIO_free(in);
return(ret);
}
#endif
int SSL_use_certificate_ASN1(SSL *ssl, const unsigned char *d, int len)
{
X509 *x;
int ret;
x=d2i_X509(NULL,&d,(long)len);
if (x == NULL)
{
SSLerr(SSL_F_SSL_USE_CERTIFICATE_ASN1,ERR_R_ASN1_LIB);
return(0);
}
ret=SSL_use_certificate(ssl,x);
X509_free(x);
return(ret);
}
#ifndef OPENSSL_NO_RSA
int SSL_use_RSAPrivateKey(SSL *ssl, RSA *rsa)
{
EVP_PKEY *pkey;
int ret;
if (rsa == NULL)
{
SSLerr(SSL_F_SSL_USE_RSAPRIVATEKEY,ERR_R_PASSED_NULL_PARAMETER);
return(0);
}
if (!ssl_cert_inst(&ssl->cert))
{
SSLerr(SSL_F_SSL_USE_RSAPRIVATEKEY,ERR_R_MALLOC_FAILURE);
return(0);
}
if ((pkey=EVP_PKEY_new()) == NULL)
{
SSLerr(SSL_F_SSL_USE_RSAPRIVATEKEY,ERR_R_EVP_LIB);
return(0);
}
RSA_up_ref(rsa);
EVP_PKEY_assign_RSA(pkey,rsa);
ret=ssl_set_pkey(ssl->cert,pkey);
EVP_PKEY_free(pkey);
return(ret);
}
#endif
static int ssl_set_pkey(CERT *c, EVP_PKEY *pkey)
{
int i;
/* Special case for DH: check two DH certificate types for a match.
* This means for DH certificates we must set the certificate first.
*/
if (pkey->type == EVP_PKEY_DH)
{
X509 *x;
i = -1;
x = c->pkeys[SSL_PKEY_DH_RSA].x509;
if (x && X509_check_private_key(x, pkey))
i = SSL_PKEY_DH_RSA;
x = c->pkeys[SSL_PKEY_DH_DSA].x509;
if (i == -1 && x && X509_check_private_key(x, pkey))
i = SSL_PKEY_DH_DSA;
ERR_clear_error();
}
else
i=ssl_cert_type(NULL,pkey);
if (i < 0)
{
SSLerr(SSL_F_SSL_SET_PKEY,SSL_R_UNKNOWN_CERTIFICATE_TYPE);
return(0);
}
if (c->pkeys[i].x509 != NULL)
{
EVP_PKEY *pktmp;
pktmp = X509_get_pubkey(c->pkeys[i].x509);
EVP_PKEY_copy_parameters(pktmp,pkey);
EVP_PKEY_free(pktmp);
ERR_clear_error();
#ifndef OPENSSL_NO_RSA
/* Don't check the public/private key, this is mostly
* for smart cards. */
if ((pkey->type == EVP_PKEY_RSA) &&
(RSA_flags(pkey->pkey.rsa) & RSA_METHOD_FLAG_NO_CHECK))
;
else
#endif
if (!X509_check_private_key(c->pkeys[i].x509,pkey))
{
X509_free(c->pkeys[i].x509);
c->pkeys[i].x509 = NULL;
return 0;
}
}
if (c->pkeys[i].privatekey != NULL)
EVP_PKEY_free(c->pkeys[i].privatekey);
CRYPTO_add(&pkey->references,1,CRYPTO_LOCK_EVP_PKEY);
c->pkeys[i].privatekey=pkey;
c->key= &(c->pkeys[i]);
c->valid=0;
return(1);
}
#ifndef OPENSSL_NO_RSA
#ifndef OPENSSL_NO_STDIO
int SSL_use_RSAPrivateKey_file(SSL *ssl, const char *file, int type)
{
int j,ret=0;
BIO *in;
RSA *rsa=NULL;
in=BIO_new(BIO_s_file_internal());
if (in == NULL)
{
SSLerr(SSL_F_SSL_USE_RSAPRIVATEKEY_FILE,ERR_R_BUF_LIB);
goto end;
}
if (BIO_read_filename(in,file) <= 0)
{
SSLerr(SSL_F_SSL_USE_RSAPRIVATEKEY_FILE,ERR_R_SYS_LIB);
goto end;
}
if (type == SSL_FILETYPE_ASN1)
{
j=ERR_R_ASN1_LIB;
rsa=d2i_RSAPrivateKey_bio(in,NULL);
}
else if (type == SSL_FILETYPE_PEM)
{
j=ERR_R_PEM_LIB;
rsa=PEM_read_bio_RSAPrivateKey(in,NULL,
ssl->ctx->default_passwd_callback,ssl->ctx->default_passwd_callback_userdata);
}
else
{
SSLerr(SSL_F_SSL_USE_RSAPRIVATEKEY_FILE,SSL_R_BAD_SSL_FILETYPE);
goto end;
}
if (rsa == NULL)
{
SSLerr(SSL_F_SSL_USE_RSAPRIVATEKEY_FILE,j);
goto end;
}
ret=SSL_use_RSAPrivateKey(ssl,rsa);
RSA_free(rsa);
end:
if (in != NULL) BIO_free(in);
return(ret);
}
#endif
int SSL_use_RSAPrivateKey_ASN1(SSL *ssl, const unsigned char *d, long len)
{
int ret;
const unsigned char *p;
RSA *rsa;
p=d;
if ((rsa=d2i_RSAPrivateKey(NULL,&p,(long)len)) == NULL)
{
SSLerr(SSL_F_SSL_USE_RSAPRIVATEKEY_ASN1,ERR_R_ASN1_LIB);
return(0);
}
ret=SSL_use_RSAPrivateKey(ssl,rsa);
RSA_free(rsa);
return(ret);
}
#endif /* !OPENSSL_NO_RSA */
int SSL_use_PrivateKey(SSL *ssl, EVP_PKEY *pkey)
{
int ret;
if (pkey == NULL)
{
SSLerr(SSL_F_SSL_USE_PRIVATEKEY,ERR_R_PASSED_NULL_PARAMETER);
return(0);
}
if (!ssl_cert_inst(&ssl->cert))
{
SSLerr(SSL_F_SSL_USE_PRIVATEKEY,ERR_R_MALLOC_FAILURE);
return(0);
}
ret=ssl_set_pkey(ssl->cert,pkey);
return(ret);
}
#ifndef OPENSSL_NO_STDIO
int SSL_use_PrivateKey_file(SSL *ssl, const char *file, int type)
{
int j,ret=0;
BIO *in;
EVP_PKEY *pkey=NULL;
in=BIO_new(BIO_s_file_internal());
if (in == NULL)
{
SSLerr(SSL_F_SSL_USE_PRIVATEKEY_FILE,ERR_R_BUF_LIB);
goto end;
}
if (BIO_read_filename(in,file) <= 0)
{
SSLerr(SSL_F_SSL_USE_PRIVATEKEY_FILE,ERR_R_SYS_LIB);
goto end;
}
if (type == SSL_FILETYPE_PEM)
{
j=ERR_R_PEM_LIB;
pkey=PEM_read_bio_PrivateKey(in,NULL,
ssl->ctx->default_passwd_callback,ssl->ctx->default_passwd_callback_userdata);
}
else if (type == SSL_FILETYPE_ASN1)
{
j = ERR_R_ASN1_LIB;
pkey = d2i_PrivateKey_bio(in,NULL);
}
else
{
SSLerr(SSL_F_SSL_USE_PRIVATEKEY_FILE,SSL_R_BAD_SSL_FILETYPE);
goto end;
}
if (pkey == NULL)
{
SSLerr(SSL_F_SSL_USE_PRIVATEKEY_FILE,j);
goto end;
}
ret=SSL_use_PrivateKey(ssl,pkey);
EVP_PKEY_free(pkey);
end:
if (in != NULL) BIO_free(in);
return(ret);
}
#endif
int SSL_use_PrivateKey_ASN1(int type, SSL *ssl, const unsigned char *d, long len)
{
int ret;
const unsigned char *p;
EVP_PKEY *pkey;
p=d;
if ((pkey=d2i_PrivateKey(type,NULL,&p,(long)len)) == NULL)
{
SSLerr(SSL_F_SSL_USE_PRIVATEKEY_ASN1,ERR_R_ASN1_LIB);
return(0);
}
ret=SSL_use_PrivateKey(ssl,pkey);
EVP_PKEY_free(pkey);
return(ret);
}
int SSL_CTX_use_certificate(SSL_CTX *ctx, X509 *x)
{
int rv;
if (x == NULL)
{
SSLerr(SSL_F_SSL_CTX_USE_CERTIFICATE,ERR_R_PASSED_NULL_PARAMETER);
return(0);
}
rv = ssl_security_cert(NULL, ctx, x, 0, 1);
if (rv != 1)
{
SSLerr(SSL_F_SSL_CTX_USE_CERTIFICATE, rv);
return 0;
}
if (!ssl_cert_inst(&ctx->cert))
{
SSLerr(SSL_F_SSL_CTX_USE_CERTIFICATE,ERR_R_MALLOC_FAILURE);
return(0);
}
return(ssl_set_cert(ctx->cert, x));
}
static int ssl_set_cert(CERT *c, X509 *x)
{
EVP_PKEY *pkey;
int i;
pkey=X509_get_pubkey(x);
if (pkey == NULL)
{
SSLerr(SSL_F_SSL_SET_CERT,SSL_R_X509_LIB);
return(0);
}
i=ssl_cert_type(x,pkey);
if (i < 0)
{
SSLerr(SSL_F_SSL_SET_CERT,SSL_R_UNKNOWN_CERTIFICATE_TYPE);
EVP_PKEY_free(pkey);
return(0);
}
if (c->pkeys[i].privatekey != NULL)
{
EVP_PKEY_copy_parameters(pkey,c->pkeys[i].privatekey);
ERR_clear_error();
#ifndef OPENSSL_NO_RSA
/* Don't check the public/private key, this is mostly
* for smart cards. */
if ((c->pkeys[i].privatekey->type == EVP_PKEY_RSA) &&
(RSA_flags(c->pkeys[i].privatekey->pkey.rsa) &
RSA_METHOD_FLAG_NO_CHECK))
;
else
#endif /* OPENSSL_NO_RSA */
if (!X509_check_private_key(x,c->pkeys[i].privatekey))
{
/* don't fail for a cert/key mismatch, just free
* current private key (when switching to a different
* cert & key, first this function should be used,
* then ssl_set_pkey */
EVP_PKEY_free(c->pkeys[i].privatekey);
c->pkeys[i].privatekey=NULL;
/* clear error queue */
ERR_clear_error();
}
}
EVP_PKEY_free(pkey);
if (c->pkeys[i].x509 != NULL)
X509_free(c->pkeys[i].x509);
CRYPTO_add(&x->references,1,CRYPTO_LOCK_X509);
c->pkeys[i].x509=x;
c->key= &(c->pkeys[i]);
c->valid=0;
return(1);
}
#ifndef OPENSSL_NO_STDIO
int SSL_CTX_use_certificate_file(SSL_CTX *ctx, const char *file, int type)
{
int j;
BIO *in;
int ret=0;
X509 *x=NULL;
in=BIO_new(BIO_s_file_internal());
if (in == NULL)
{
SSLerr(SSL_F_SSL_CTX_USE_CERTIFICATE_FILE,ERR_R_BUF_LIB);
goto end;
}
if (BIO_read_filename(in,file) <= 0)
{
SSLerr(SSL_F_SSL_CTX_USE_CERTIFICATE_FILE,ERR_R_SYS_LIB);
goto end;
}
if (type == SSL_FILETYPE_ASN1)
{
j=ERR_R_ASN1_LIB;
x=d2i_X509_bio(in,NULL);
}
else if (type == SSL_FILETYPE_PEM)
{
j=ERR_R_PEM_LIB;
x=PEM_read_bio_X509(in,NULL,ctx->default_passwd_callback,ctx->default_passwd_callback_userdata);
}
else
{
SSLerr(SSL_F_SSL_CTX_USE_CERTIFICATE_FILE,SSL_R_BAD_SSL_FILETYPE);
goto end;
}
if (x == NULL)
{
SSLerr(SSL_F_SSL_CTX_USE_CERTIFICATE_FILE,j);
goto end;
}
ret=SSL_CTX_use_certificate(ctx,x);
end:
if (x != NULL) X509_free(x);
if (in != NULL) BIO_free(in);
return(ret);
}
#endif
int SSL_CTX_use_certificate_ASN1(SSL_CTX *ctx, int len, const unsigned char *d)
{
X509 *x;
int ret;
x=d2i_X509(NULL,&d,(long)len);
if (x == NULL)
{
SSLerr(SSL_F_SSL_CTX_USE_CERTIFICATE_ASN1,ERR_R_ASN1_LIB);
return(0);
}
ret=SSL_CTX_use_certificate(ctx,x);
X509_free(x);
return(ret);
}
#ifndef OPENSSL_NO_RSA
int SSL_CTX_use_RSAPrivateKey(SSL_CTX *ctx, RSA *rsa)
{
int ret;
EVP_PKEY *pkey;
if (rsa == NULL)
{
SSLerr(SSL_F_SSL_CTX_USE_RSAPRIVATEKEY,ERR_R_PASSED_NULL_PARAMETER);
return(0);
}
if (!ssl_cert_inst(&ctx->cert))
{
SSLerr(SSL_F_SSL_CTX_USE_RSAPRIVATEKEY,ERR_R_MALLOC_FAILURE);
return(0);
}
if ((pkey=EVP_PKEY_new()) == NULL)
{
SSLerr(SSL_F_SSL_CTX_USE_RSAPRIVATEKEY,ERR_R_EVP_LIB);
return(0);
}
RSA_up_ref(rsa);
EVP_PKEY_assign_RSA(pkey,rsa);
ret=ssl_set_pkey(ctx->cert, pkey);
EVP_PKEY_free(pkey);
return(ret);
}
#ifndef OPENSSL_NO_STDIO
int SSL_CTX_use_RSAPrivateKey_file(SSL_CTX *ctx, const char *file, int type)
{
int j,ret=0;
BIO *in;
RSA *rsa=NULL;
in=BIO_new(BIO_s_file_internal());
if (in == NULL)
{
SSLerr(SSL_F_SSL_CTX_USE_RSAPRIVATEKEY_FILE,ERR_R_BUF_LIB);
goto end;
}
if (BIO_read_filename(in,file) <= 0)
{
SSLerr(SSL_F_SSL_CTX_USE_RSAPRIVATEKEY_FILE,ERR_R_SYS_LIB);
goto end;
}
if (type == SSL_FILETYPE_ASN1)
{
j=ERR_R_ASN1_LIB;
rsa=d2i_RSAPrivateKey_bio(in,NULL);
}
else if (type == SSL_FILETYPE_PEM)
{
j=ERR_R_PEM_LIB;
rsa=PEM_read_bio_RSAPrivateKey(in,NULL,
ctx->default_passwd_callback,ctx->default_passwd_callback_userdata);
}
else
{
SSLerr(SSL_F_SSL_CTX_USE_RSAPRIVATEKEY_FILE,SSL_R_BAD_SSL_FILETYPE);
goto end;
}
if (rsa == NULL)
{
SSLerr(SSL_F_SSL_CTX_USE_RSAPRIVATEKEY_FILE,j);
goto end;
}
ret=SSL_CTX_use_RSAPrivateKey(ctx,rsa);
RSA_free(rsa);
end:
if (in != NULL) BIO_free(in);
return(ret);
}
#endif
int SSL_CTX_use_RSAPrivateKey_ASN1(SSL_CTX *ctx, const unsigned char *d, long len)
{
int ret;
const unsigned char *p;
RSA *rsa;
p=d;
if ((rsa=d2i_RSAPrivateKey(NULL,&p,(long)len)) == NULL)
{
SSLerr(SSL_F_SSL_CTX_USE_RSAPRIVATEKEY_ASN1,ERR_R_ASN1_LIB);
return(0);
}
ret=SSL_CTX_use_RSAPrivateKey(ctx,rsa);
RSA_free(rsa);
return(ret);
}
#endif /* !OPENSSL_NO_RSA */
int SSL_CTX_use_PrivateKey(SSL_CTX *ctx, EVP_PKEY *pkey)
{
if (pkey == NULL)
{
SSLerr(SSL_F_SSL_CTX_USE_PRIVATEKEY,ERR_R_PASSED_NULL_PARAMETER);
return(0);
}
if (!ssl_cert_inst(&ctx->cert))
{
SSLerr(SSL_F_SSL_CTX_USE_PRIVATEKEY,ERR_R_MALLOC_FAILURE);
return(0);
}
return(ssl_set_pkey(ctx->cert,pkey));
}
#ifndef OPENSSL_NO_STDIO
int SSL_CTX_use_PrivateKey_file(SSL_CTX *ctx, const char *file, int type)
{
int j,ret=0;
BIO *in;
EVP_PKEY *pkey=NULL;
in=BIO_new(BIO_s_file_internal());
if (in == NULL)
{
SSLerr(SSL_F_SSL_CTX_USE_PRIVATEKEY_FILE,ERR_R_BUF_LIB);
goto end;
}
if (BIO_read_filename(in,file) <= 0)
{
SSLerr(SSL_F_SSL_CTX_USE_PRIVATEKEY_FILE,ERR_R_SYS_LIB);
goto end;
}
if (type == SSL_FILETYPE_PEM)
{
j=ERR_R_PEM_LIB;
pkey=PEM_read_bio_PrivateKey(in,NULL,
ctx->default_passwd_callback,ctx->default_passwd_callback_userdata);
}
else if (type == SSL_FILETYPE_ASN1)
{
j = ERR_R_ASN1_LIB;
pkey = d2i_PrivateKey_bio(in,NULL);
}
else
{
SSLerr(SSL_F_SSL_CTX_USE_PRIVATEKEY_FILE,SSL_R_BAD_SSL_FILETYPE);
goto end;
}
if (pkey == NULL)
{
SSLerr(SSL_F_SSL_CTX_USE_PRIVATEKEY_FILE,j);
goto end;
}
ret=SSL_CTX_use_PrivateKey(ctx,pkey);
EVP_PKEY_free(pkey);
end:
if (in != NULL) BIO_free(in);
return(ret);
}
#endif
int SSL_CTX_use_PrivateKey_ASN1(int type, SSL_CTX *ctx, const unsigned char *d,
long len)
{
int ret;
const unsigned char *p;
EVP_PKEY *pkey;
p=d;
if ((pkey=d2i_PrivateKey(type,NULL,&p,(long)len)) == NULL)
{
SSLerr(SSL_F_SSL_CTX_USE_PRIVATEKEY_ASN1,ERR_R_ASN1_LIB);
return(0);
}
ret=SSL_CTX_use_PrivateKey(ctx,pkey);
EVP_PKEY_free(pkey);
return(ret);
}
#ifndef OPENSSL_NO_STDIO
/* Read a file that contains our certificate in "PEM" format,
* possibly followed by a sequence of CA certificates that should be
* sent to the peer in the Certificate message.
*/
int SSL_CTX_use_certificate_chain_file(SSL_CTX *ctx, const char *file)
{
BIO *in;
int ret=0;
X509 *x=NULL;
ERR_clear_error(); /* clear error stack for SSL_CTX_use_certificate() */
in = BIO_new(BIO_s_file_internal());
if (in == NULL)
{
SSLerr(SSL_F_SSL_CTX_USE_CERTIFICATE_CHAIN_FILE,ERR_R_BUF_LIB);
goto end;
}
if (BIO_read_filename(in,file) <= 0)
{
SSLerr(SSL_F_SSL_CTX_USE_CERTIFICATE_CHAIN_FILE,ERR_R_SYS_LIB);
goto end;
}
x=PEM_read_bio_X509_AUX(in,NULL,ctx->default_passwd_callback,
ctx->default_passwd_callback_userdata);
if (x == NULL)
{
SSLerr(SSL_F_SSL_CTX_USE_CERTIFICATE_CHAIN_FILE,ERR_R_PEM_LIB);
goto end;
}
ret = SSL_CTX_use_certificate(ctx, x);
if (ERR_peek_error() != 0)
ret = 0; /* Key/certificate mismatch doesn't imply ret==0 ... */
if (ret)
{
/* If we could set up our certificate, now proceed to
* the CA certificates.
*/
X509 *ca;
int r;
unsigned long err;
SSL_CTX_clear_chain_certs(ctx);
while ((ca = PEM_read_bio_X509(in, NULL,
ctx->default_passwd_callback,
ctx->default_passwd_callback_userdata))
!= NULL)
{
r = SSL_CTX_add0_chain_cert(ctx, ca);
if (!r)
{
X509_free(ca);
ret = 0;
goto end;
}
/* Note that we must not free r if it was successfully
* added to the chain (while we must free the main
* certificate, since its reference count is increased
* by SSL_CTX_use_certificate). */
}
/* When the while loop ends, it's usually just EOF. */
err = ERR_peek_last_error();
if (ERR_GET_LIB(err) == ERR_LIB_PEM && ERR_GET_REASON(err) == PEM_R_NO_START_LINE)
ERR_clear_error();
else
ret = 0; /* some real error */
}
end:
if (x != NULL) X509_free(x);
if (in != NULL) BIO_free(in);
return(ret);
}
#endif
#ifndef OPENSSL_NO_TLSEXT
static int serverinfo_find_extension(const unsigned char *serverinfo,
size_t serverinfo_length,
unsigned int extension_type,
const unsigned char **extension_data,
size_t *extension_length)
{
*extension_data = NULL;
*extension_length = 0;
if (serverinfo == NULL || serverinfo_length == 0)
return 0;
for (;;)
{
unsigned int type = 0;
size_t len = 0;
/* end of serverinfo */
if (serverinfo_length == 0)
return -1; /* Extension not found */
/* read 2-byte type field */
if (serverinfo_length < 2)
return 0; /* Error */
type = (serverinfo[0] << 8) + serverinfo[1];
serverinfo += 2;
serverinfo_length -= 2;
/* read 2-byte len field */
if (serverinfo_length < 2)
return 0; /* Error */
len = (serverinfo[0] << 8) + serverinfo[1];
serverinfo += 2;
serverinfo_length -= 2;
if (len > serverinfo_length)
return 0; /* Error */
if (type == extension_type)
{
*extension_data = serverinfo;
*extension_length = len;
return 1; /* Success */
}
serverinfo += len;
serverinfo_length -= len;
}
return 0; /* Error */
}
static int serverinfo_srv_parse_cb(SSL *s, unsigned int ext_type,
const unsigned char *in,
size_t inlen, int *al,
void *arg)
{
if (inlen != 0)
{
*al = SSL_AD_DECODE_ERROR;
return 0;
}
return 1;
}
static int serverinfo_srv_add_cb(SSL *s, unsigned int ext_type,
const unsigned char **out, size_t *outlen,
int *al, void *arg)
{
const unsigned char *serverinfo = NULL;
size_t serverinfo_length = 0;
/* Is there serverinfo data for the chosen server cert? */
if ((ssl_get_server_cert_serverinfo(s, &serverinfo,
&serverinfo_length)) != 0)
{
/* Find the relevant extension from the serverinfo */
int retval = serverinfo_find_extension(serverinfo, serverinfo_length,
ext_type, out, outlen);
if (retval == 0)
return 0; /* Error */
if (retval == -1)
return -1; /* No extension found, don't send extension */
return 1; /* Send extension */
}
return -1; /* No serverinfo data found, don't send extension */
}
/* With a NULL context, this function just checks that the serverinfo data
parses correctly. With a non-NULL context, it registers callbacks for
the included extensions. */
static int serverinfo_process_buffer(const unsigned char *serverinfo,
size_t serverinfo_length, SSL_CTX *ctx)
{
if (serverinfo == NULL || serverinfo_length == 0)
return 0;
for (;;)
{
unsigned int ext_type = 0;
size_t len = 0;
/* end of serverinfo */
if (serverinfo_length == 0)
return 1;
/* read 2-byte type field */
if (serverinfo_length < 2)
return 0;
/* FIXME: check for types we understand explicitly? */
/* Register callbacks for extensions */
ext_type = (serverinfo[0] << 8) + serverinfo[1];
if (ctx && !SSL_CTX_add_server_custom_ext(ctx, ext_type,
serverinfo_srv_add_cb,
NULL, NULL,
serverinfo_srv_parse_cb,
NULL))
return 0;
serverinfo += 2;
serverinfo_length -= 2;
/* read 2-byte len field */
if (serverinfo_length < 2)
return 0;
len = (serverinfo[0] << 8) + serverinfo[1];
serverinfo += 2;
serverinfo_length -= 2;
if (len > serverinfo_length)
return 0;
serverinfo += len;
serverinfo_length -= len;
}
}
int SSL_CTX_use_serverinfo(SSL_CTX *ctx, const unsigned char *serverinfo,
size_t serverinfo_length)
{
if (ctx == NULL || serverinfo == NULL || serverinfo_length == 0)
{
SSLerr(SSL_F_SSL_CTX_USE_SERVERINFO,ERR_R_PASSED_NULL_PARAMETER);
return 0;
}
if (!serverinfo_process_buffer(serverinfo, serverinfo_length, NULL))
{
SSLerr(SSL_F_SSL_CTX_USE_SERVERINFO,SSL_R_INVALID_SERVERINFO_DATA);
return 0;
}
if (!ssl_cert_inst(&ctx->cert))
{
SSLerr(SSL_F_SSL_CTX_USE_SERVERINFO,ERR_R_MALLOC_FAILURE);
return 0;
}
if (ctx->cert->key == NULL)
{
SSLerr(SSL_F_SSL_CTX_USE_SERVERINFO,ERR_R_INTERNAL_ERROR);
return 0;
}
ctx->cert->key->serverinfo = OPENSSL_realloc(ctx->cert->key->serverinfo,
serverinfo_length);
if (ctx->cert->key->serverinfo == NULL)
{
SSLerr(SSL_F_SSL_CTX_USE_SERVERINFO,ERR_R_MALLOC_FAILURE);
return 0;
}
memcpy(ctx->cert->key->serverinfo, serverinfo, serverinfo_length);
ctx->cert->key->serverinfo_length = serverinfo_length;
/* Now that the serverinfo is validated and stored, go ahead and
* register callbacks. */
if (!serverinfo_process_buffer(serverinfo, serverinfo_length, ctx))
{
SSLerr(SSL_F_SSL_CTX_USE_SERVERINFO,SSL_R_INVALID_SERVERINFO_DATA);
return 0;
}
return 1;
}
#ifndef OPENSSL_NO_STDIO
int SSL_CTX_use_serverinfo_file(SSL_CTX *ctx, const char *file)
{
unsigned char *serverinfo = NULL;
size_t serverinfo_length = 0;
unsigned char* extension = 0;
long extension_length = 0;
char* name = NULL;
char* header = NULL;
char namePrefix[] = "SERVERINFO FOR ";
int ret = 0;
BIO *bin = NULL;
size_t num_extensions = 0;
if (ctx == NULL || file == NULL)
{
SSLerr(SSL_F_SSL_CTX_USE_SERVERINFO_FILE,ERR_R_PASSED_NULL_PARAMETER);
goto end;
}
bin = BIO_new(BIO_s_file_internal());
if (bin == NULL)
{
SSLerr(SSL_F_SSL_CTX_USE_SERVERINFO_FILE, ERR_R_BUF_LIB);
goto end;
}
if (BIO_read_filename(bin, file) <= 0)
{
SSLerr(SSL_F_SSL_CTX_USE_SERVERINFO_FILE, ERR_R_SYS_LIB);
goto end;
}
for (num_extensions=0;; num_extensions++)
{
if (PEM_read_bio(bin, &name, &header, &extension, &extension_length) == 0)
{
/* There must be at least one extension in this file */
if (num_extensions == 0)
{
SSLerr(SSL_F_SSL_CTX_USE_SERVERINFO_FILE, SSL_R_NO_PEM_EXTENSIONS);
goto end;
}
else /* End of file, we're done */
break;
}
/* Check that PEM name starts with "BEGIN SERVERINFO FOR " */
if (strlen(name) < strlen(namePrefix))
{
SSLerr(SSL_F_SSL_CTX_USE_SERVERINFO_FILE, SSL_R_PEM_NAME_TOO_SHORT);
goto end;
}
if (strncmp(name, namePrefix, strlen(namePrefix)) != 0)
{
SSLerr(SSL_F_SSL_CTX_USE_SERVERINFO_FILE, SSL_R_PEM_NAME_BAD_PREFIX);
goto end;
}
/* Check that the decoded PEM data is plausible (valid length field) */
if (extension_length < 4 || (extension[2] << 8) + extension[3] != extension_length - 4)
{
SSLerr(SSL_F_SSL_CTX_USE_SERVERINFO_FILE, SSL_R_BAD_DATA);
goto end;
}
/* Append the decoded extension to the serverinfo buffer */
serverinfo = OPENSSL_realloc(serverinfo, serverinfo_length + extension_length);
if (serverinfo == NULL)
{
SSLerr(SSL_F_SSL_CTX_USE_SERVERINFO_FILE, ERR_R_MALLOC_FAILURE);
goto end;
}
memcpy(serverinfo + serverinfo_length, extension, extension_length);
serverinfo_length += extension_length;
OPENSSL_free(name); name = NULL;
OPENSSL_free(header); header = NULL;
OPENSSL_free(extension); extension = NULL;
}
ret = SSL_CTX_use_serverinfo(ctx, serverinfo, serverinfo_length);
end:
/* SSL_CTX_use_serverinfo makes a local copy of the serverinfo. */
OPENSSL_free(name);
OPENSSL_free(header);
OPENSSL_free(extension);
OPENSSL_free(serverinfo);
if (bin != NULL)
BIO_free(bin);
return ret;
}
#endif /* OPENSSL_NO_STDIO */
#endif /* OPENSSL_NO_TLSEXT */
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