openbsd-compat/libtls/openssl.c
Rama master · réplica de lectura del repositorio original.
#include "includes.h"
#include <sys/types.h>
#include <sys/uio.h>
#include <limits.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/x509_vfy.h>
#include <openssl/pem.h>
#include <openssl/ssl.h>
#include "log.h"
#include "ssl.h"
#ifndef HAVE_SSL_CTX_LOAD_VERIFY_MEM
#define X509_LOOKUP_add_mem(x,iov,type) \
X509_LOOKUP_ctrl((x),X509_L_MEM,(const char *)(iov),\
(long)(type),NULL)
#define X509_L_MEM 3
#define SSL_ECDH_CURVE "prime256v1"
X509_LOOKUP_METHOD *
X509_LOOKUP_mem(void);
int
X509_STORE_load_mem(X509_STORE *ctx, void *buf, int len)
{
X509_LOOKUP *lookup;
struct iovec iov;
lookup = X509_STORE_add_lookup(ctx, X509_LOOKUP_mem());
if (lookup == NULL)
return (0);
iov.iov_base = buf;
iov.iov_len = len;
if (X509_LOOKUP_add_mem(lookup, &iov, X509_FILETYPE_PEM) != 1)
return (0);
return (1);
}
int
SSL_CTX_load_verify_mem(SSL_CTX *ctx, void *buf, int len)
{
return (X509_STORE_load_mem(SSL_CTX_get_cert_store(ctx), buf, len));
}
#endif /* HAVE_SSL_CTX_LOAD_VERIFY_MEM */
#ifndef HAVE_SSL_CTX_USE_CERTIFICATE_CHAIN_MEM
/* Copyright (C) 1995-1998 Eric Young ([email protected])
* All rights reserved.
*
* This package is an SSL implementation written
* by Eric Young ([email protected]).
* 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 ([email protected]).
*
* 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 ([email protected])"
* 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 ([email protected])"
*
* 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 .
*/
/*
* Read a bio 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.
*/
static int
ssl_ctx_use_certificate_chain_bio(SSL_CTX *ctx, BIO *in)
{
int ret = 0;
X509 *x = NULL;
ERR_clear_error(); /* clear error stack for SSL_CTX_use_certificate() */
x = PEM_read_bio_X509_AUX(in, NULL, SSL_CTX_get_default_passwd_cb(ctx),
SSL_CTX_get_default_passwd_cb_userdata(ctx));
if (x == NULL) {
SSLerr(SSL_F_SSL_CTX_USE_CERTIFICATE_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;
STACK_OF(X509) *chain;
int r;
unsigned long err;
SSL_CTX_get_extra_chain_certs_only(ctx, &chain);
if (chain != NULL) {
sk_X509_pop_free(chain, X509_free);
SSL_CTX_clear_extra_chain_certs(ctx);
}
while ((ca = PEM_read_bio_X509(in, NULL,
SSL_CTX_get_default_passwd_cb(ctx),
SSL_CTX_get_default_passwd_cb_userdata(ctx))) != NULL) {
r = SSL_CTX_add_extra_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);
return (ret);
}
int
SSL_CTX_use_certificate_chain_mem(SSL_CTX *ctx, void *buf, int len)
{
BIO *in;
int ret = 0;
in = BIO_new_mem_buf(buf, len);
if (in == NULL) {
SSLerr(SSL_F_SSL_CTX_USE_CERTIFICATE_FILE, ERR_R_BUF_LIB);
goto end;
}
ret = ssl_ctx_use_certificate_chain_bio(ctx, in);
end:
BIO_free(in);
return (ret);
}
#endif /* HAVE_SSL_CTX_USE_CERTIFICATE_CHAIN_MEM */