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/* $OpenBSD: ssl_privsep.c,v 1.3 2009/04/26 19:55:39 gilles Exp $ */
/* 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.]
*/
/*
* SSL operations needed when running in a privilege separated environment.
* Adapted from openssl's ssl_rsa.c by Pierre-Yves Ritschard .
*/
#include <sys/types.h>
#include <sys/uio.h>
#include <unistd.h>
#include <stdio.h>
#include <openssl/err.h>
#include <openssl/bio.h>
#include <openssl/objects.h>
#include <openssl/evp.h>
#include <openssl/x509.h>
#include <openssl/pem.h>
#include <openssl/ssl.h>
int ssl_ctx_use_private_key(SSL_CTX *, char *, off_t);
int ssl_ctx_use_certificate_chain(SSL_CTX *, char *, off_t);
int ssl_ctx_load_verify_memory(SSL_CTX *, char *, off_t);
int ssl_by_mem_ctrl(X509_LOOKUP *, int, const char *, long, char **);
X509_LOOKUP_METHOD x509_mem_lookup = {
"Load cert from memory",
NULL, /* new */
NULL, /* free */
NULL, /* init */
NULL, /* shutdown */
ssl_by_mem_ctrl, /* ctrl */
NULL, /* get_by_subject */
NULL, /* get_by_issuer_serial */
NULL, /* get_by_fingerprint */
NULL, /* get_by_alias */
};
#define X509_L_ADD_MEM 3
int
ssl_ctx_use_private_key(SSL_CTX *ctx, char *buf, off_t len)
{
int ret;
BIO *in;
EVP_PKEY *pkey;
ret = 0;
if ((in = BIO_new_mem_buf(buf, len)) == NULL) {
SSLerr(SSL_F_SSL_CTX_USE_PRIVATEKEY_FILE, ERR_R_BUF_LIB);
return 0;
}
pkey = PEM_read_bio_PrivateKey(in, NULL,
ctx->default_passwd_callback,
ctx->default_passwd_callback_userdata);
if (pkey == NULL) {
SSLerr(SSL_F_SSL_CTX_USE_PRIVATEKEY_FILE, ERR_R_PEM_LIB);
goto end;
}
ret = SSL_CTX_use_PrivateKey(ctx, pkey);
EVP_PKEY_free(pkey);
end:
if (in != NULL)
BIO_free(in);
return ret;
}
int
ssl_ctx_load_verify_memory(SSL_CTX *ctx, char *buf, off_t len)
{
X509_LOOKUP *lu;
struct iovec iov;
if ((lu = X509_STORE_add_lookup(ctx->cert_store,
&x509_mem_lookup)) == NULL)
return (0);
iov.iov_base = buf;
iov.iov_len = len;
if (!ssl_by_mem_ctrl(lu, X509_L_ADD_MEM,
(const char *)&iov, X509_FILETYPE_PEM, NULL))
return (0);
return (1);
}
int
ssl_by_mem_ctrl(X509_LOOKUP *lu, int cmd, const char *buf,
long type, char **ret)
{
STACK_OF(X509_INFO) *inf;
const struct iovec *iov;
X509_INFO *itmp;
BIO *in = NULL;
int i, count = 0;
iov = (const struct iovec *)buf;
if (type != X509_FILETYPE_PEM)
goto done;
if ((in = BIO_new_mem_buf(iov->iov_base, iov->iov_len)) == NULL)
goto done;
if ((inf = PEM_X509_INFO_read_bio(in, NULL, NULL, NULL)) == NULL)
goto done;
for(i = 0; i < sk_X509_INFO_num(inf); i++) {
itmp = sk_X509_INFO_value(inf, i);
if(itmp->x509) {
X509_STORE_add_cert(lu->store_ctx, itmp->x509);
count++;
}
if(itmp->crl) {
X509_STORE_add_crl(lu->store_ctx, itmp->crl);
count++;
}
}
sk_X509_INFO_pop_free(inf, X509_INFO_free);
done:
if (!count)
X509err(X509_F_X509_LOAD_CERT_CRL_FILE,ERR_R_PEM_LIB);
if (in != NULL)
BIO_free(in);
return (count);
}
int
ssl_ctx_use_certificate_chain(SSL_CTX *ctx, char *buf, off_t len)
{
int ret;
BIO *in;
X509 *x;
X509 *ca;
unsigned long err;
ret = 0;
x = ca = NULL;
if ((in = BIO_new_mem_buf(buf, len)) == NULL) {
SSLerr(SSL_F_SSL_CTX_USE_CERTIFICATE_CHAIN_FILE, ERR_R_BUF_LIB);
goto end;
}
if ((x = PEM_read_bio_X509(in, NULL,
ctx->default_passwd_callback,
ctx->default_passwd_callback_userdata)) == NULL) {
SSLerr(SSL_F_SSL_CTX_USE_CERTIFICATE_CHAIN_FILE, ERR_R_PEM_LIB);
goto end;
}
if (!SSL_CTX_use_certificate(ctx, x) || ERR_peek_error() != 0)
goto end;
/* If we could set up our certificate, now proceed to
* the CA certificates.
*/
if (ctx->extra_certs != NULL) {
sk_X509_pop_free(ctx->extra_certs, X509_free);
ctx->extra_certs = NULL;
}
while ((ca = PEM_read_bio_X509(in, NULL,
ctx->default_passwd_callback,
ctx->default_passwd_callback_userdata)) != NULL) {
if (!SSL_CTX_add_extra_chain_cert(ctx, ca))
goto end;
}
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
goto end;
ret = 1;
end:
if (ca != NULL)
X509_free(ca);
if (x != NULL)
X509_free(x);
if (in != NULL)
BIO_free(in);
return (ret);
}
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