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pineapple-src/externals/libressl/ssl/ssl_lib.c
pineappleEA caa0c2911b early-access version 2698
2022-04-24 22:29:35 +02:00

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/* $OpenBSD: ssl_lib.c,v 1.290 2022/03/18 18:01:17 jsing 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.]
*/
/* ====================================================================
* Copyright (c) 1998-2007 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).
*
*/
/* ====================================================================
* Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
* ECC cipher suite support in OpenSSL originally developed by
* SUN MICROSYSTEMS, INC., and contributed to the OpenSSL project.
*/
/* ====================================================================
* Copyright 2005 Nokia. All rights reserved.
*
* The portions of the attached software ("Contribution") is developed by
* Nokia Corporation and is licensed pursuant to the OpenSSL open source
* license.
*
* The Contribution, originally written by Mika Kousa and Pasi Eronen of
* Nokia Corporation, consists of the "PSK" (Pre-Shared Key) ciphersuites
* support (see RFC 4279) to OpenSSL.
*
* No patent licenses or other rights except those expressly stated in
* the OpenSSL open source license shall be deemed granted or received
* expressly, by implication, estoppel, or otherwise.
*
* No assurances are provided by Nokia that the Contribution does not
* infringe the patent or other intellectual property rights of any third
* party or that the license provides you with all the necessary rights
* to make use of the Contribution.
*
* THE SOFTWARE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. IN
* ADDITION TO THE DISCLAIMERS INCLUDED IN THE LICENSE, NOKIA
* SPECIFICALLY DISCLAIMS ANY LIABILITY FOR CLAIMS BROUGHT BY YOU OR ANY
* OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS OR
* OTHERWISE.
*/
#include <arpa/inet.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <limits.h>
#include <stdio.h>
#include <openssl/dh.h>
#include <openssl/lhash.h>
#include <openssl/objects.h>
#include <openssl/ocsp.h>
#include <openssl/opensslconf.h>
#include <openssl/x509v3.h>
#ifndef OPENSSL_NO_ENGINE
#include <openssl/engine.h>
#endif
#include "bytestring.h"
#include "dtls_locl.h"
#include "ssl_locl.h"
#include "ssl_sigalgs.h"
const char *SSL_version_str = OPENSSL_VERSION_TEXT;
int
SSL_clear(SSL *s)
{
if (s->method == NULL) {
SSLerror(s, SSL_R_NO_METHOD_SPECIFIED);
return (0);
}
if (ssl_clear_bad_session(s)) {
SSL_SESSION_free(s->session);
s->session = NULL;
}
s->error = 0;
s->internal->hit = 0;
s->internal->shutdown = 0;
if (s->internal->renegotiate) {
SSLerror(s, ERR_R_INTERNAL_ERROR);
return (0);
}
s->version = s->method->version;
s->client_version = s->version;
s->internal->rwstate = SSL_NOTHING;
s->internal->rstate = SSL_ST_READ_HEADER;
tls13_ctx_free(s->internal->tls13);
s->internal->tls13 = NULL;
ssl3_release_init_buffer(s);
ssl_clear_cipher_state(s);
s->internal->first_packet = 0;
/*
* Check to see if we were changed into a different method, if
* so, revert back if we are not doing session-id reuse.
*/
if (!s->internal->in_handshake && (s->session == NULL) &&
(s->method != s->ctx->method)) {
s->method->ssl_free(s);
s->method = s->ctx->method;
if (!s->method->ssl_new(s))
return (0);
} else
s->method->ssl_clear(s);
return (1);
}
/* Used to change an SSL_CTXs default SSL method type */
int
SSL_CTX_set_ssl_version(SSL_CTX *ctx, const SSL_METHOD *meth)
{
STACK_OF(SSL_CIPHER) *ciphers;
ctx->method = meth;
ciphers = ssl_create_cipher_list(ctx->method, &ctx->cipher_list,
ctx->internal->cipher_list_tls13, SSL_DEFAULT_CIPHER_LIST);
if (ciphers == NULL || sk_SSL_CIPHER_num(ciphers) <= 0) {
SSLerrorx(SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS);
return (0);
}
return (1);
}
SSL *
SSL_new(SSL_CTX *ctx)
{
SSL *s;
if (ctx == NULL) {
SSLerrorx(SSL_R_NULL_SSL_CTX);
return (NULL);
}
if (ctx->method == NULL) {
SSLerrorx(SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION);
return (NULL);
}
if ((s = calloc(1, sizeof(*s))) == NULL)
goto err;
if ((s->internal = calloc(1, sizeof(*s->internal))) == NULL)
goto err;
if ((s->internal->rl = tls12_record_layer_new()) == NULL)
goto err;
s->internal->min_tls_version = ctx->internal->min_tls_version;
s->internal->max_tls_version = ctx->internal->max_tls_version;
s->internal->min_proto_version = ctx->internal->min_proto_version;
s->internal->max_proto_version = ctx->internal->max_proto_version;
s->internal->options = ctx->internal->options;
s->internal->mode = ctx->internal->mode;
s->internal->max_cert_list = ctx->internal->max_cert_list;
s->internal->num_tickets = ctx->internal->num_tickets;
if ((s->cert = ssl_cert_dup(ctx->internal->cert)) == NULL)
goto err;
s->internal->read_ahead = ctx->internal->read_ahead;
s->internal->msg_callback = ctx->internal->msg_callback;
s->internal->msg_callback_arg = ctx->internal->msg_callback_arg;
s->verify_mode = ctx->verify_mode;
s->sid_ctx_length = ctx->sid_ctx_length;
OPENSSL_assert(s->sid_ctx_length <= sizeof s->sid_ctx);
memcpy(&s->sid_ctx, &ctx->sid_ctx, sizeof(s->sid_ctx));
s->internal->verify_callback = ctx->internal->default_verify_callback;
s->internal->generate_session_id = ctx->internal->generate_session_id;
s->param = X509_VERIFY_PARAM_new();
if (!s->param)
goto err;
X509_VERIFY_PARAM_inherit(s->param, ctx->param);
s->internal->quiet_shutdown = ctx->internal->quiet_shutdown;
s->max_send_fragment = ctx->internal->max_send_fragment;
CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX);
s->ctx = ctx;
s->internal->tlsext_debug_cb = 0;
s->internal->tlsext_debug_arg = NULL;
s->internal->tlsext_ticket_expected = 0;
s->tlsext_status_type = -1;
s->internal->tlsext_status_expected = 0;
s->internal->tlsext_ocsp_ids = NULL;
s->internal->tlsext_ocsp_exts = NULL;
s->internal->tlsext_ocsp_resp = NULL;
s->internal->tlsext_ocsp_resp_len = 0;
CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX);
s->initial_ctx = ctx;
if (ctx->internal->tlsext_ecpointformatlist != NULL) {
s->internal->tlsext_ecpointformatlist =
calloc(ctx->internal->tlsext_ecpointformatlist_length,
sizeof(ctx->internal->tlsext_ecpointformatlist[0]));
if (s->internal->tlsext_ecpointformatlist == NULL)
goto err;
memcpy(s->internal->tlsext_ecpointformatlist,
ctx->internal->tlsext_ecpointformatlist,
ctx->internal->tlsext_ecpointformatlist_length *
sizeof(ctx->internal->tlsext_ecpointformatlist[0]));
s->internal->tlsext_ecpointformatlist_length =
ctx->internal->tlsext_ecpointformatlist_length;
}
if (ctx->internal->tlsext_supportedgroups != NULL) {
s->internal->tlsext_supportedgroups =
calloc(ctx->internal->tlsext_supportedgroups_length,
sizeof(ctx->internal->tlsext_supportedgroups[0]));
if (s->internal->tlsext_supportedgroups == NULL)
goto err;
memcpy(s->internal->tlsext_supportedgroups,
ctx->internal->tlsext_supportedgroups,
ctx->internal->tlsext_supportedgroups_length *
sizeof(ctx->internal->tlsext_supportedgroups[0]));
s->internal->tlsext_supportedgroups_length =
ctx->internal->tlsext_supportedgroups_length;
}
if (s->ctx->internal->alpn_client_proto_list != NULL) {
s->internal->alpn_client_proto_list =
malloc(s->ctx->internal->alpn_client_proto_list_len);
if (s->internal->alpn_client_proto_list == NULL)
goto err;
memcpy(s->internal->alpn_client_proto_list,
s->ctx->internal->alpn_client_proto_list,
s->ctx->internal->alpn_client_proto_list_len);
s->internal->alpn_client_proto_list_len =
s->ctx->internal->alpn_client_proto_list_len;
}
s->verify_result = X509_V_OK;
s->method = ctx->method;
if (!s->method->ssl_new(s))
goto err;
s->references = 1;
s->server = ctx->method->server;
SSL_clear(s);
CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->internal->ex_data);
return (s);
err:
SSL_free(s);
SSLerrorx(ERR_R_MALLOC_FAILURE);
return (NULL);
}
int
SSL_CTX_set_session_id_context(SSL_CTX *ctx, const unsigned char *sid_ctx,
unsigned int sid_ctx_len)
{
if (sid_ctx_len > sizeof ctx->sid_ctx) {
SSLerrorx(SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
return (0);
}
ctx->sid_ctx_length = sid_ctx_len;
memcpy(ctx->sid_ctx, sid_ctx, sid_ctx_len);
return (1);
}
int
SSL_set_session_id_context(SSL *ssl, const unsigned char *sid_ctx,
unsigned int sid_ctx_len)
{
if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) {
SSLerror(ssl, SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
return (0);
}
ssl->sid_ctx_length = sid_ctx_len;
memcpy(ssl->sid_ctx, sid_ctx, sid_ctx_len);
return (1);
}
int
SSL_CTX_set_generate_session_id(SSL_CTX *ctx, GEN_SESSION_CB cb)
{
CRYPTO_w_lock(CRYPTO_LOCK_SSL_CTX);
ctx->internal->generate_session_id = cb;
CRYPTO_w_unlock(CRYPTO_LOCK_SSL_CTX);
return (1);
}
int
SSL_set_generate_session_id(SSL *ssl, GEN_SESSION_CB cb)
{
CRYPTO_w_lock(CRYPTO_LOCK_SSL);
ssl->internal->generate_session_id = cb;
CRYPTO_w_unlock(CRYPTO_LOCK_SSL);
return (1);
}
int
SSL_has_matching_session_id(const SSL *ssl, const unsigned char *id,
unsigned int id_len)
{
/*
* A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp
* shows how we can "construct" a session to give us the desired
* check - ie. to find if there's a session in the hash table
* that would conflict with any new session built out of this
* id/id_len and the ssl_version in use by this SSL.
*/
SSL_SESSION r, *p;
if (id_len > sizeof r.session_id)
return (0);
r.ssl_version = ssl->version;
r.session_id_length = id_len;
memcpy(r.session_id, id, id_len);
CRYPTO_r_lock(CRYPTO_LOCK_SSL_CTX);
p = lh_SSL_SESSION_retrieve(ssl->ctx->internal->sessions, &r);
CRYPTO_r_unlock(CRYPTO_LOCK_SSL_CTX);
return (p != NULL);
}
int
SSL_CTX_set_purpose(SSL_CTX *s, int purpose)
{
return (X509_VERIFY_PARAM_set_purpose(s->param, purpose));
}
int
SSL_set_purpose(SSL *s, int purpose)
{
return (X509_VERIFY_PARAM_set_purpose(s->param, purpose));
}
int
SSL_CTX_set_trust(SSL_CTX *s, int trust)
{
return (X509_VERIFY_PARAM_set_trust(s->param, trust));
}
int
SSL_set_trust(SSL *s, int trust)
{
return (X509_VERIFY_PARAM_set_trust(s->param, trust));
}
int
SSL_set1_host(SSL *s, const char *hostname)
{
struct in_addr ina;
struct in6_addr in6a;
if (hostname != NULL && *hostname != '\0' &&
(inet_pton(AF_INET, hostname, &ina) == 1 ||
inet_pton(AF_INET6, hostname, &in6a) == 1))
return X509_VERIFY_PARAM_set1_ip_asc(s->param, hostname);
else
return X509_VERIFY_PARAM_set1_host(s->param, hostname, 0);
}
void
SSL_set_hostflags(SSL *s, unsigned int flags)
{
X509_VERIFY_PARAM_set_hostflags(s->param, flags);
}
const char *
SSL_get0_peername(SSL *s)
{
return X509_VERIFY_PARAM_get0_peername(s->param);
}
X509_VERIFY_PARAM *
SSL_CTX_get0_param(SSL_CTX *ctx)
{
return (ctx->param);
}
int
SSL_CTX_set1_param(SSL_CTX *ctx, X509_VERIFY_PARAM *vpm)
{
return (X509_VERIFY_PARAM_set1(ctx->param, vpm));
}
X509_VERIFY_PARAM *
SSL_get0_param(SSL *ssl)
{
return (ssl->param);
}
int
SSL_set1_param(SSL *ssl, X509_VERIFY_PARAM *vpm)
{
return (X509_VERIFY_PARAM_set1(ssl->param, vpm));
}
void
SSL_free(SSL *s)
{
int i;
if (s == NULL)
return;
i = CRYPTO_add(&s->references, -1, CRYPTO_LOCK_SSL);
if (i > 0)
return;
X509_VERIFY_PARAM_free(s->param);
CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->internal->ex_data);
if (s->bbio != NULL) {
/* If the buffering BIO is in place, pop it off */
if (s->bbio == s->wbio) {
s->wbio = BIO_pop(s->wbio);
}
BIO_free(s->bbio);
s->bbio = NULL;
}
if (s->rbio != s->wbio)
BIO_free_all(s->rbio);
BIO_free_all(s->wbio);
tls13_ctx_free(s->internal->tls13);
ssl3_release_init_buffer(s);
sk_SSL_CIPHER_free(s->cipher_list);
sk_SSL_CIPHER_free(s->internal->cipher_list_tls13);
/* Make the next call work :-) */
if (s->session != NULL) {
ssl_clear_bad_session(s);
SSL_SESSION_free(s->session);
}
ssl_clear_cipher_state(s);
ssl_cert_free(s->cert);
free(s->tlsext_hostname);
SSL_CTX_free(s->initial_ctx);
free(s->internal->tlsext_ecpointformatlist);
free(s->internal->tlsext_supportedgroups);
sk_X509_EXTENSION_pop_free(s->internal->tlsext_ocsp_exts,
X509_EXTENSION_free);
sk_OCSP_RESPID_pop_free(s->internal->tlsext_ocsp_ids, OCSP_RESPID_free);
free(s->internal->tlsext_ocsp_resp);
sk_X509_NAME_pop_free(s->internal->client_CA, X509_NAME_free);
if (s->method != NULL)
s->method->ssl_free(s);
SSL_CTX_free(s->ctx);
free(s->internal->alpn_client_proto_list);
#ifndef OPENSSL_NO_SRTP
sk_SRTP_PROTECTION_PROFILE_free(s->internal->srtp_profiles);
#endif
tls12_record_layer_free(s->internal->rl);
free(s->internal);
free(s);
}
int
SSL_up_ref(SSL *s)
{
int refs = CRYPTO_add(&s->references, 1, CRYPTO_LOCK_SSL);
return (refs > 1) ? 1 : 0;
}
void
SSL_set_bio(SSL *s, BIO *rbio, BIO *wbio)
{
/* If the output buffering BIO is still in place, remove it */
if (s->bbio != NULL) {
if (s->wbio == s->bbio) {
s->wbio = BIO_next(s->wbio);
BIO_set_next(s->bbio, NULL);
}
}
if (s->rbio != rbio && s->rbio != s->wbio)
BIO_free_all(s->rbio);
if (s->wbio != wbio)
BIO_free_all(s->wbio);
s->rbio = rbio;
s->wbio = wbio;
}
BIO *
SSL_get_rbio(const SSL *s)
{
return (s->rbio);
}
void
SSL_set0_rbio(SSL *s, BIO *rbio)
{
BIO_free_all(s->rbio);
s->rbio = rbio;
}
BIO *
SSL_get_wbio(const SSL *s)
{
return (s->wbio);
}
int
SSL_get_fd(const SSL *s)
{
return (SSL_get_rfd(s));
}
int
SSL_get_rfd(const SSL *s)
{
int ret = -1;
BIO *b, *r;
b = SSL_get_rbio(s);
r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
if (r != NULL)
BIO_get_fd(r, &ret);
return (ret);
}
int
SSL_get_wfd(const SSL *s)
{
int ret = -1;
BIO *b, *r;
b = SSL_get_wbio(s);
r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
if (r != NULL)
BIO_get_fd(r, &ret);
return (ret);
}
int
SSL_set_fd(SSL *s, int fd)
{
int ret = 0;
BIO *bio = NULL;
bio = BIO_new(BIO_s_socket());
if (bio == NULL) {
SSLerror(s, ERR_R_BUF_LIB);
goto err;
}
BIO_set_fd(bio, fd, BIO_NOCLOSE);
SSL_set_bio(s, bio, bio);
ret = 1;
err:
return (ret);
}
int
SSL_set_wfd(SSL *s, int fd)
{
int ret = 0;
BIO *bio = NULL;
if ((s->rbio == NULL) || (BIO_method_type(s->rbio) != BIO_TYPE_SOCKET)
|| ((int)BIO_get_fd(s->rbio, NULL) != fd)) {
bio = BIO_new(BIO_s_socket());
if (bio == NULL) {
SSLerror(s, ERR_R_BUF_LIB);
goto err;
}
BIO_set_fd(bio, fd, BIO_NOCLOSE);
SSL_set_bio(s, SSL_get_rbio(s), bio);
} else
SSL_set_bio(s, SSL_get_rbio(s), SSL_get_rbio(s));
ret = 1;
err:
return (ret);
}
int
SSL_set_rfd(SSL *s, int fd)
{
int ret = 0;
BIO *bio = NULL;
if ((s->wbio == NULL) || (BIO_method_type(s->wbio) != BIO_TYPE_SOCKET)
|| ((int)BIO_get_fd(s->wbio, NULL) != fd)) {
bio = BIO_new(BIO_s_socket());
if (bio == NULL) {
SSLerror(s, ERR_R_BUF_LIB);
goto err;
}
BIO_set_fd(bio, fd, BIO_NOCLOSE);
SSL_set_bio(s, bio, SSL_get_wbio(s));
} else
SSL_set_bio(s, SSL_get_wbio(s), SSL_get_wbio(s));
ret = 1;
err:
return (ret);
}
/* return length of latest Finished message we sent, copy to 'buf' */
size_t
SSL_get_finished(const SSL *s, void *buf, size_t count)
{
size_t ret;
ret = s->s3->hs.finished_len;
if (count > ret)
count = ret;
memcpy(buf, s->s3->hs.finished, count);
return (ret);
}
/* return length of latest Finished message we expected, copy to 'buf' */
size_t
SSL_get_peer_finished(const SSL *s, void *buf, size_t count)
{
size_t ret;
ret = s->s3->hs.peer_finished_len;
if (count > ret)
count = ret;
memcpy(buf, s->s3->hs.peer_finished, count);
return (ret);
}
int
SSL_get_verify_mode(const SSL *s)
{
return (s->verify_mode);
}
int
SSL_get_verify_depth(const SSL *s)
{
return (X509_VERIFY_PARAM_get_depth(s->param));
}
int
(*SSL_get_verify_callback(const SSL *s))(int, X509_STORE_CTX *)
{
return (s->internal->verify_callback);
}
void
SSL_CTX_set_keylog_callback(SSL_CTX *ctx, SSL_CTX_keylog_cb_func cb)
{
ctx->internal->keylog_callback = cb;
}
SSL_CTX_keylog_cb_func
SSL_CTX_get_keylog_callback(const SSL_CTX *ctx)
{
return (ctx->internal->keylog_callback);
}
int
SSL_set_num_tickets(SSL *s, size_t num_tickets)
{
s->internal->num_tickets = num_tickets;
return 1;
}
size_t
SSL_get_num_tickets(const SSL *s)
{
return s->internal->num_tickets;
}
int
SSL_CTX_set_num_tickets(SSL_CTX *ctx, size_t num_tickets)
{
ctx->internal->num_tickets = num_tickets;
return 1;
}
size_t
SSL_CTX_get_num_tickets(const SSL_CTX *ctx)
{
return ctx->internal->num_tickets;
}
int
SSL_CTX_get_verify_mode(const SSL_CTX *ctx)
{
return (ctx->verify_mode);
}
int
SSL_CTX_get_verify_depth(const SSL_CTX *ctx)
{
return (X509_VERIFY_PARAM_get_depth(ctx->param));
}
int
(*SSL_CTX_get_verify_callback(const SSL_CTX *ctx))(int, X509_STORE_CTX *)
{
return (ctx->internal->default_verify_callback);
}
void
SSL_set_verify(SSL *s, int mode,
int (*callback)(int ok, X509_STORE_CTX *ctx))
{
s->verify_mode = mode;
if (callback != NULL)
s->internal->verify_callback = callback;
}
void
SSL_set_verify_depth(SSL *s, int depth)
{
X509_VERIFY_PARAM_set_depth(s->param, depth);
}
void
SSL_set_read_ahead(SSL *s, int yes)
{
s->internal->read_ahead = yes;
}
int
SSL_get_read_ahead(const SSL *s)
{
return (s->internal->read_ahead);
}
int
SSL_pending(const SSL *s)
{
return (s->method->ssl_pending(s));
}
X509 *
SSL_get_peer_certificate(const SSL *s)
{
X509 *cert;
if (s == NULL || s->session == NULL)
return NULL;
if ((cert = s->session->peer_cert) == NULL)
return NULL;
X509_up_ref(cert);
return cert;
}
STACK_OF(X509) *
SSL_get_peer_cert_chain(const SSL *s)
{
if (s == NULL || s->session == NULL)
return NULL;
/*
* If we are a client, cert_chain includes the peer's own
* certificate; if we are a server, it does not.
*/
return s->session->cert_chain;
}
STACK_OF(X509) *
SSL_get0_verified_chain(const SSL *s)
{
return s->internal->verified_chain;
}
/*
* Now in theory, since the calling process own 't' it should be safe to
* modify. We need to be able to read f without being hassled
*/
int
SSL_copy_session_id(SSL *t, const SSL *f)
{
SSL_CERT *tmp;
/* Do we need to do SSL locking? */
if (!SSL_set_session(t, SSL_get_session(f)))
return 0;
/* What if we are set up for one protocol but want to talk another? */
if (t->method != f->method) {
t->method->ssl_free(t);
t->method = f->method;
if (!t->method->ssl_new(t))
return 0;
}
tmp = t->cert;
if (f->cert != NULL) {
CRYPTO_add(&f->cert->references, 1, CRYPTO_LOCK_SSL_CERT);
t->cert = f->cert;
} else
t->cert = NULL;
ssl_cert_free(tmp);
if (!SSL_set_session_id_context(t, f->sid_ctx, f->sid_ctx_length))
return 0;
return 1;
}
/* Fix this so it checks all the valid key/cert options */
int
SSL_CTX_check_private_key(const SSL_CTX *ctx)
{
if ((ctx == NULL) || (ctx->internal->cert == NULL) ||
(ctx->internal->cert->key->x509 == NULL)) {
SSLerrorx(SSL_R_NO_CERTIFICATE_ASSIGNED);
return (0);
}
if (ctx->internal->cert->key->privatekey == NULL) {
SSLerrorx(SSL_R_NO_PRIVATE_KEY_ASSIGNED);
return (0);
}
return (X509_check_private_key(ctx->internal->cert->key->x509,
ctx->internal->cert->key->privatekey));
}
/* Fix this function so that it takes an optional type parameter */
int
SSL_check_private_key(const SSL *ssl)
{
if (ssl == NULL) {
SSLerrorx(ERR_R_PASSED_NULL_PARAMETER);
return (0);
}
if (ssl->cert == NULL) {
SSLerror(ssl, SSL_R_NO_CERTIFICATE_ASSIGNED);
return (0);
}
if (ssl->cert->key->x509 == NULL) {
SSLerror(ssl, SSL_R_NO_CERTIFICATE_ASSIGNED);
return (0);
}
if (ssl->cert->key->privatekey == NULL) {
SSLerror(ssl, SSL_R_NO_PRIVATE_KEY_ASSIGNED);
return (0);
}
return (X509_check_private_key(ssl->cert->key->x509,
ssl->cert->key->privatekey));
}
int
SSL_accept(SSL *s)
{
if (s->internal->handshake_func == NULL)
SSL_set_accept_state(s); /* Not properly initialized yet */
return (s->method->ssl_accept(s));
}
int
SSL_connect(SSL *s)
{
if (s->internal->handshake_func == NULL)
SSL_set_connect_state(s); /* Not properly initialized yet */
return (s->method->ssl_connect(s));
}
int
SSL_is_dtls(const SSL *s)
{
return s->method->dtls;
}
int
SSL_is_server(const SSL *s)
{
return s->server;
}
static long
ssl_get_default_timeout()
{
/*
* 2 hours, the 24 hours mentioned in the TLSv1 spec
* is way too long for http, the cache would over fill.
*/
return (2 * 60 * 60);
}
long
SSL_get_default_timeout(const SSL *s)
{
return (ssl_get_default_timeout());
}
int
SSL_read(SSL *s, void *buf, int num)
{
if (num < 0) {
SSLerror(s, SSL_R_BAD_LENGTH);
return -1;
}
if (s->internal->handshake_func == NULL) {
SSLerror(s, SSL_R_UNINITIALIZED);
return (-1);
}
if (s->internal->shutdown & SSL_RECEIVED_SHUTDOWN) {
s->internal->rwstate = SSL_NOTHING;
return (0);
}
return ssl3_read(s, buf, num);
}
int
SSL_read_ex(SSL *s, void *buf, size_t num, size_t *bytes_read)
{
int ret;
/* We simply don't bother supporting enormous reads */
if (num > INT_MAX) {
SSLerror(s, SSL_R_BAD_LENGTH);
return 0;
}
ret = SSL_read(s, buf, (int)num);
if (ret < 0)
ret = 0;
*bytes_read = ret;
return ret > 0;
}
int
SSL_peek(SSL *s, void *buf, int num)
{
if (num < 0) {
SSLerror(s, SSL_R_BAD_LENGTH);
return -1;
}
if (s->internal->handshake_func == NULL) {
SSLerror(s, SSL_R_UNINITIALIZED);
return (-1);
}
if (s->internal->shutdown & SSL_RECEIVED_SHUTDOWN) {
return (0);
}
return ssl3_peek(s, buf, num);
}
int
SSL_peek_ex(SSL *s, void *buf, size_t num, size_t *bytes_peeked)
{
int ret;
/* We simply don't bother supporting enormous peeks */
if (num > INT_MAX) {
SSLerror(s, SSL_R_BAD_LENGTH);
return 0;
}
ret = SSL_peek(s, buf, (int)num);
if (ret < 0)
ret = 0;
*bytes_peeked = ret;
return ret > 0;
}
int
SSL_write(SSL *s, const void *buf, int num)
{
if (num < 0) {
SSLerror(s, SSL_R_BAD_LENGTH);
return -1;
}
if (s->internal->handshake_func == NULL) {
SSLerror(s, SSL_R_UNINITIALIZED);
return (-1);
}
if (s->internal->shutdown & SSL_SENT_SHUTDOWN) {
s->internal->rwstate = SSL_NOTHING;
SSLerror(s, SSL_R_PROTOCOL_IS_SHUTDOWN);
return (-1);
}
return ssl3_write(s, buf, num);
}
int
SSL_write_ex(SSL *s, const void *buf, size_t num, size_t *bytes_written)
{
int ret;
/* We simply don't bother supporting enormous writes */
if (num > INT_MAX) {
SSLerror(s, SSL_R_BAD_LENGTH);
return 0;
}
if (num == 0) {
/* This API is special */
bytes_written = 0;
return 1;
}
ret = SSL_write(s, buf, (int)num);
if (ret < 0)
ret = 0;
*bytes_written = ret;
return ret > 0;
}
uint32_t
SSL_CTX_get_max_early_data(const SSL_CTX *ctx)
{
return 0;
}
int
SSL_CTX_set_max_early_data(SSL_CTX *ctx, uint32_t max_early_data)
{
return 1;
}
uint32_t
SSL_get_max_early_data(const SSL *s)
{
return 0;
}
int
SSL_set_max_early_data(SSL *s, uint32_t max_early_data)
{
return 1;
}
int
SSL_get_early_data_status(const SSL *s)
{
return SSL_EARLY_DATA_REJECTED;
}
int
SSL_read_early_data(SSL *s, void *buf, size_t num, size_t *readbytes)
{
*readbytes = 0;
if (!s->server) {
SSLerror(s, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
return SSL_READ_EARLY_DATA_ERROR;
}
return SSL_READ_EARLY_DATA_FINISH;
}
int
SSL_write_early_data(SSL *s, const void *buf, size_t num, size_t *written)
{
*written = 0;
SSLerror(s, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
return 0;
}
int
SSL_shutdown(SSL *s)
{
/*
* Note that this function behaves differently from what one might
* expect. Return values are 0 for no success (yet),
* 1 for success; but calling it once is usually not enough,
* even if blocking I/O is used (see ssl3_shutdown).
*/
if (s->internal->handshake_func == NULL) {
SSLerror(s, SSL_R_UNINITIALIZED);
return (-1);
}
if (s != NULL && !SSL_in_init(s))
return (s->method->ssl_shutdown(s));
return (1);
}
int
SSL_renegotiate(SSL *s)
{
if (s->internal->renegotiate == 0)
s->internal->renegotiate = 1;
s->internal->new_session = 1;
return (s->method->ssl_renegotiate(s));
}
int
SSL_renegotiate_abbreviated(SSL *s)
{
if (s->internal->renegotiate == 0)
s->internal->renegotiate = 1;
s->internal->new_session = 0;
return (s->method->ssl_renegotiate(s));
}
int
SSL_renegotiate_pending(SSL *s)
{
/*
* Becomes true when negotiation is requested;
* false again once a handshake has finished.
*/
return (s->internal->renegotiate != 0);
}
long
SSL_ctrl(SSL *s, int cmd, long larg, void *parg)
{
long l;
switch (cmd) {
case SSL_CTRL_GET_READ_AHEAD:
return (s->internal->read_ahead);
case SSL_CTRL_SET_READ_AHEAD:
l = s->internal->read_ahead;
s->internal->read_ahead = larg;
return (l);
case SSL_CTRL_SET_MSG_CALLBACK_ARG:
s->internal->msg_callback_arg = parg;
return (1);
case SSL_CTRL_OPTIONS:
return (s->internal->options|=larg);
case SSL_CTRL_CLEAR_OPTIONS:
return (s->internal->options&=~larg);
case SSL_CTRL_MODE:
return (s->internal->mode|=larg);
case SSL_CTRL_CLEAR_MODE:
return (s->internal->mode &=~larg);
case SSL_CTRL_GET_MAX_CERT_LIST:
return (s->internal->max_cert_list);
case SSL_CTRL_SET_MAX_CERT_LIST:
l = s->internal->max_cert_list;
s->internal->max_cert_list = larg;
return (l);
case SSL_CTRL_SET_MTU:
#ifndef OPENSSL_NO_DTLS1
if (larg < (long)dtls1_min_mtu())
return (0);
#endif
if (SSL_is_dtls(s)) {
s->d1->mtu = larg;
return (larg);
}
return (0);
case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
return (0);
s->max_send_fragment = larg;
return (1);
case SSL_CTRL_GET_RI_SUPPORT:
if (s->s3)
return (s->s3->send_connection_binding);
else return (0);
default:
if (SSL_is_dtls(s))
return dtls1_ctrl(s, cmd, larg, parg);
return ssl3_ctrl(s, cmd, larg, parg);
}
}
long
SSL_callback_ctrl(SSL *s, int cmd, void (*fp)(void))
{
switch (cmd) {
case SSL_CTRL_SET_MSG_CALLBACK:
s->internal->msg_callback = (ssl_msg_callback_fn *)(fp);
return (1);
default:
return (ssl3_callback_ctrl(s, cmd, fp));
}
}
struct lhash_st_SSL_SESSION *
SSL_CTX_sessions(SSL_CTX *ctx)
{
return (ctx->internal->sessions);
}
long
SSL_CTX_ctrl(SSL_CTX *ctx, int cmd, long larg, void *parg)
{
long l;
switch (cmd) {
case SSL_CTRL_GET_READ_AHEAD:
return (ctx->internal->read_ahead);
case SSL_CTRL_SET_READ_AHEAD:
l = ctx->internal->read_ahead;
ctx->internal->read_ahead = larg;
return (l);
case SSL_CTRL_SET_MSG_CALLBACK_ARG:
ctx->internal->msg_callback_arg = parg;
return (1);
case SSL_CTRL_GET_MAX_CERT_LIST:
return (ctx->internal->max_cert_list);
case SSL_CTRL_SET_MAX_CERT_LIST:
l = ctx->internal->max_cert_list;
ctx->internal->max_cert_list = larg;
return (l);
case SSL_CTRL_SET_SESS_CACHE_SIZE:
l = ctx->internal->session_cache_size;
ctx->internal->session_cache_size = larg;
return (l);
case SSL_CTRL_GET_SESS_CACHE_SIZE:
return (ctx->internal->session_cache_size);
case SSL_CTRL_SET_SESS_CACHE_MODE:
l = ctx->internal->session_cache_mode;
ctx->internal->session_cache_mode = larg;
return (l);
case SSL_CTRL_GET_SESS_CACHE_MODE:
return (ctx->internal->session_cache_mode);
case SSL_CTRL_SESS_NUMBER:
return (lh_SSL_SESSION_num_items(ctx->internal->sessions));
case SSL_CTRL_SESS_CONNECT:
return (ctx->internal->stats.sess_connect);
case SSL_CTRL_SESS_CONNECT_GOOD:
return (ctx->internal->stats.sess_connect_good);
case SSL_CTRL_SESS_CONNECT_RENEGOTIATE:
return (ctx->internal->stats.sess_connect_renegotiate);
case SSL_CTRL_SESS_ACCEPT:
return (ctx->internal->stats.sess_accept);
case SSL_CTRL_SESS_ACCEPT_GOOD:
return (ctx->internal->stats.sess_accept_good);
case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE:
return (ctx->internal->stats.sess_accept_renegotiate);
case SSL_CTRL_SESS_HIT:
return (ctx->internal->stats.sess_hit);
case SSL_CTRL_SESS_CB_HIT:
return (ctx->internal->stats.sess_cb_hit);
case SSL_CTRL_SESS_MISSES:
return (ctx->internal->stats.sess_miss);
case SSL_CTRL_SESS_TIMEOUTS:
return (ctx->internal->stats.sess_timeout);
case SSL_CTRL_SESS_CACHE_FULL:
return (ctx->internal->stats.sess_cache_full);
case SSL_CTRL_OPTIONS:
return (ctx->internal->options|=larg);
case SSL_CTRL_CLEAR_OPTIONS:
return (ctx->internal->options&=~larg);
case SSL_CTRL_MODE:
return (ctx->internal->mode|=larg);
case SSL_CTRL_CLEAR_MODE:
return (ctx->internal->mode&=~larg);
case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
return (0);
ctx->internal->max_send_fragment = larg;
return (1);
default:
return (ssl3_ctx_ctrl(ctx, cmd, larg, parg));
}
}
long
SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp)(void))
{
switch (cmd) {
case SSL_CTRL_SET_MSG_CALLBACK:
ctx->internal->msg_callback = (ssl_msg_callback_fn *)fp;
return (1);
default:
return (ssl3_ctx_callback_ctrl(ctx, cmd, fp));
}
}
int
ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b)
{
long l;
l = a->id - b->id;
if (l == 0L)
return (0);
else
return ((l > 0) ? 1:-1);
}
STACK_OF(SSL_CIPHER) *
SSL_get_ciphers(const SSL *s)
{
if (s == NULL)
return (NULL);
if (s->cipher_list != NULL)
return (s->cipher_list);
return (s->ctx->cipher_list);
}
STACK_OF(SSL_CIPHER) *
SSL_get_client_ciphers(const SSL *s)
{
if (s == NULL || s->session == NULL || !s->server)
return NULL;
return s->session->ciphers;
}
STACK_OF(SSL_CIPHER) *
SSL_get1_supported_ciphers(SSL *s)
{
STACK_OF(SSL_CIPHER) *supported_ciphers = NULL, *ciphers;
const SSL_CIPHER *cipher;
uint16_t min_vers, max_vers;
int i;
if (s == NULL)
return NULL;
if (!ssl_supported_tls_version_range(s, &min_vers, &max_vers))
return NULL;
if ((ciphers = SSL_get_ciphers(s)) == NULL)
return NULL;
if ((supported_ciphers = sk_SSL_CIPHER_new_null()) == NULL)
return NULL;
for (i = 0; i < sk_SSL_CIPHER_num(ciphers); i++) {
if ((cipher = sk_SSL_CIPHER_value(ciphers, i)) == NULL)
goto err;
if (!ssl_cipher_allowed_in_tls_version_range(cipher, min_vers,
max_vers))
continue;
if (!sk_SSL_CIPHER_push(supported_ciphers, cipher))
goto err;
}
if (sk_SSL_CIPHER_num(supported_ciphers) > 0)
return supported_ciphers;
err:
sk_SSL_CIPHER_free(supported_ciphers);
return NULL;
}
/* See if we have any ECC cipher suites. */
int
ssl_has_ecc_ciphers(SSL *s)
{
STACK_OF(SSL_CIPHER) *ciphers;
unsigned long alg_k, alg_a;
SSL_CIPHER *cipher;
int i;
if ((ciphers = SSL_get_ciphers(s)) == NULL)
return 0;
for (i = 0; i < sk_SSL_CIPHER_num(ciphers); i++) {
cipher = sk_SSL_CIPHER_value(ciphers, i);
alg_k = cipher->algorithm_mkey;
alg_a = cipher->algorithm_auth;
if ((alg_k & SSL_kECDHE) || (alg_a & SSL_aECDSA))
return 1;
}
return 0;
}
/* The old interface to get the same thing as SSL_get_ciphers(). */
const char *
SSL_get_cipher_list(const SSL *s, int n)
{
STACK_OF(SSL_CIPHER) *ciphers;
const SSL_CIPHER *cipher;
if ((ciphers = SSL_get_ciphers(s)) == NULL)
return (NULL);
if ((cipher = sk_SSL_CIPHER_value(ciphers, n)) == NULL)
return (NULL);
return (cipher->name);
}
STACK_OF(SSL_CIPHER) *
SSL_CTX_get_ciphers(const SSL_CTX *ctx)
{
if (ctx == NULL)
return NULL;
return ctx->cipher_list;
}
/* Specify the ciphers to be used by default by the SSL_CTX. */
int
SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str)
{
STACK_OF(SSL_CIPHER) *ciphers;
/*
* ssl_create_cipher_list may return an empty stack if it was unable to
* find a cipher matching the given rule string (for example if the
* rule string specifies a cipher which has been disabled). This is not
* an error as far as ssl_create_cipher_list is concerned, and hence
* ctx->cipher_list has been updated.
*/
ciphers = ssl_create_cipher_list(ctx->method, &ctx->cipher_list,
ctx->internal->cipher_list_tls13, str);
if (ciphers == NULL) {
return (0);
} else if (sk_SSL_CIPHER_num(ciphers) == 0) {
SSLerrorx(SSL_R_NO_CIPHER_MATCH);
return (0);
}
return (1);
}
int
SSL_CTX_set_ciphersuites(SSL_CTX *ctx, const char *str)
{
if (!ssl_parse_ciphersuites(&ctx->internal->cipher_list_tls13, str)) {
SSLerrorx(SSL_R_NO_CIPHER_MATCH);
return 0;
}
if (!ssl_merge_cipherlists(ctx->cipher_list,
ctx->internal->cipher_list_tls13, &ctx->cipher_list))
return 0;
return 1;
}
/* Specify the ciphers to be used by the SSL. */
int
SSL_set_cipher_list(SSL *s, const char *str)
{
STACK_OF(SSL_CIPHER) *ciphers, *ciphers_tls13;
if ((ciphers_tls13 = s->internal->cipher_list_tls13) == NULL)
ciphers_tls13 = s->ctx->internal->cipher_list_tls13;
/* See comment in SSL_CTX_set_cipher_list. */
ciphers = ssl_create_cipher_list(s->ctx->method, &s->cipher_list,
ciphers_tls13, str);
if (ciphers == NULL) {
return (0);
} else if (sk_SSL_CIPHER_num(ciphers) == 0) {
SSLerror(s, SSL_R_NO_CIPHER_MATCH);
return (0);
}
return (1);
}
int
SSL_set_ciphersuites(SSL *s, const char *str)
{
STACK_OF(SSL_CIPHER) *ciphers;
if ((ciphers = s->cipher_list) == NULL)
ciphers = s->ctx->cipher_list;
if (!ssl_parse_ciphersuites(&s->internal->cipher_list_tls13, str)) {
SSLerrorx(SSL_R_NO_CIPHER_MATCH);
return (0);
}
if (!ssl_merge_cipherlists(ciphers, s->internal->cipher_list_tls13,
&s->cipher_list))
return 0;
return 1;
}
char *
SSL_get_shared_ciphers(const SSL *s, char *buf, int len)
{
STACK_OF(SSL_CIPHER) *client_ciphers, *server_ciphers;
const SSL_CIPHER *cipher;
size_t curlen = 0;
char *end;
int i;
if (!s->server || s->session == NULL || len < 2)
return NULL;
if ((client_ciphers = s->session->ciphers) == NULL)
return NULL;
if ((server_ciphers = SSL_get_ciphers(s)) == NULL)
return NULL;
if (sk_SSL_CIPHER_num(client_ciphers) == 0 ||
sk_SSL_CIPHER_num(server_ciphers) == 0)
return NULL;
buf[0] = '\0';
for (i = 0; i < sk_SSL_CIPHER_num(client_ciphers); i++) {
cipher = sk_SSL_CIPHER_value(client_ciphers, i);
if (sk_SSL_CIPHER_find(server_ciphers, cipher) < 0)
continue;
end = buf + curlen;
if (strlcat(buf, cipher->name, len) >= len ||
(curlen = strlcat(buf, ":", len)) >= len) {
/* remove truncated cipher from list */
*end = '\0';
break;
}
}
/* remove trailing colon */
if ((end = strrchr(buf, ':')) != NULL)
*end = '\0';
return buf;
}
/*
* Return a servername extension value if provided in Client Hello, or NULL.
* So far, only host_name types are defined (RFC 3546).
*/
const char *
SSL_get_servername(const SSL *s, const int type)
{
if (type != TLSEXT_NAMETYPE_host_name)
return (NULL);
return (s->session && !s->tlsext_hostname ?
s->session->tlsext_hostname :
s->tlsext_hostname);
}
int
SSL_get_servername_type(const SSL *s)
{
if (s->session &&
(!s->tlsext_hostname ?
s->session->tlsext_hostname : s->tlsext_hostname))
return (TLSEXT_NAMETYPE_host_name);
return (-1);
}
/*
* SSL_select_next_proto implements standard protocol selection. It is
* expected that this function is called from the callback set by
* SSL_CTX_set_alpn_select_cb.
*
* The protocol data is assumed to be a vector of 8-bit, length prefixed byte
* strings. The length byte itself is not included in the length. A byte
* string of length 0 is invalid. No byte string may be truncated.
*
* It returns either:
* OPENSSL_NPN_NEGOTIATED if a common protocol was found, or
* OPENSSL_NPN_NO_OVERLAP if the fallback case was reached.
*/
int
SSL_select_next_proto(unsigned char **out, unsigned char *outlen,
const unsigned char *server, unsigned int server_len,
const unsigned char *client, unsigned int client_len)
{
unsigned int i, j;
const unsigned char *result;
int status = OPENSSL_NPN_UNSUPPORTED;
/*
* For each protocol in server preference order,
* see if we support it.
*/
for (i = 0; i < server_len; ) {
for (j = 0; j < client_len; ) {
if (server[i] == client[j] &&
memcmp(&server[i + 1],
&client[j + 1], server[i]) == 0) {
/* We found a match */
result = &server[i];
status = OPENSSL_NPN_NEGOTIATED;
goto found;
}
j += client[j];
j++;
}
i += server[i];
i++;
}
/* There's no overlap between our protocols and the server's list. */
result = client;
status = OPENSSL_NPN_NO_OVERLAP;
found:
*out = (unsigned char *) result + 1;
*outlen = result[0];
return (status);
}
/* SSL_get0_next_proto_negotiated is deprecated. */
void
SSL_get0_next_proto_negotiated(const SSL *s, const unsigned char **data,
unsigned int *len)
{
*data = NULL;
*len = 0;
}
/* SSL_CTX_set_next_protos_advertised_cb is deprecated. */
void
SSL_CTX_set_next_protos_advertised_cb(SSL_CTX *ctx, int (*cb) (SSL *ssl,
const unsigned char **out, unsigned int *outlen, void *arg), void *arg)
{
}
/* SSL_CTX_set_next_proto_select_cb is deprecated. */
void
SSL_CTX_set_next_proto_select_cb(SSL_CTX *ctx, int (*cb) (SSL *s,
unsigned char **out, unsigned char *outlen, const unsigned char *in,
unsigned int inlen, void *arg), void *arg)
{
}
/*
* SSL_CTX_set_alpn_protos sets the ALPN protocol list to the specified
* protocols, which must be in wire-format (i.e. a series of non-empty,
* 8-bit length-prefixed strings). Returns 0 on success.
*/
int
SSL_CTX_set_alpn_protos(SSL_CTX *ctx, const unsigned char *protos,
unsigned int protos_len)
{
int failed = 1;
if (protos == NULL || protos_len == 0)
goto err;
free(ctx->internal->alpn_client_proto_list);
ctx->internal->alpn_client_proto_list = NULL;
ctx->internal->alpn_client_proto_list_len = 0;
if ((ctx->internal->alpn_client_proto_list = malloc(protos_len))
== NULL)
goto err;
ctx->internal->alpn_client_proto_list_len = protos_len;
memcpy(ctx->internal->alpn_client_proto_list, protos, protos_len);
failed = 0;
err:
/* NOTE: Return values are the reverse of what you expect. */
return (failed);
}
/*
* SSL_set_alpn_protos sets the ALPN protocol list to the specified
* protocols, which must be in wire-format (i.e. a series of non-empty,
* 8-bit length-prefixed strings). Returns 0 on success.
*/
int
SSL_set_alpn_protos(SSL *ssl, const unsigned char *protos,
unsigned int protos_len)
{
int failed = 1;
if (protos == NULL || protos_len == 0)
goto err;
free(ssl->internal->alpn_client_proto_list);
ssl->internal->alpn_client_proto_list = NULL;
ssl->internal->alpn_client_proto_list_len = 0;
if ((ssl->internal->alpn_client_proto_list = malloc(protos_len))
== NULL)
goto err;
ssl->internal->alpn_client_proto_list_len = protos_len;
memcpy(ssl->internal->alpn_client_proto_list, protos, protos_len);
failed = 0;
err:
/* NOTE: Return values are the reverse of what you expect. */
return (failed);
}
/*
* SSL_CTX_set_alpn_select_cb sets a callback function that is called during
* ClientHello processing in order to select an ALPN protocol from the
* client's list of offered protocols.
*/
void
SSL_CTX_set_alpn_select_cb(SSL_CTX* ctx,
int (*cb) (SSL *ssl, const unsigned char **out, unsigned char *outlen,
const unsigned char *in, unsigned int inlen, void *arg), void *arg)
{
ctx->internal->alpn_select_cb = cb;
ctx->internal->alpn_select_cb_arg = arg;
}
/*
* SSL_get0_alpn_selected gets the selected ALPN protocol (if any). On return
* it sets data to point to len bytes of protocol name (not including the
* leading length-prefix byte). If the server didn't respond with* a negotiated
* protocol then len will be zero.
*/
void
SSL_get0_alpn_selected(const SSL *ssl, const unsigned char **data,
unsigned int *len)
{
*data = ssl->s3->alpn_selected;
*len = ssl->s3->alpn_selected_len;
}
void
SSL_set_psk_use_session_callback(SSL *s, SSL_psk_use_session_cb_func cb)
{
return;
}
int
SSL_export_keying_material(SSL *s, unsigned char *out, size_t olen,
const char *label, size_t llen, const unsigned char *p, size_t plen,
int use_context)
{
if (s->internal->tls13 != NULL && s->version == TLS1_3_VERSION) {
if (!use_context) {
p = NULL;
plen = 0;
}
return tls13_exporter(s->internal->tls13, label, llen, p, plen,
out, olen);
}
return (tls1_export_keying_material(s, out, olen, label, llen, p, plen,
use_context));
}
static unsigned long
ssl_session_hash(const SSL_SESSION *a)
{
unsigned long l;
l = (unsigned long)
((unsigned int) a->session_id[0] )|
((unsigned int) a->session_id[1]<< 8L)|
((unsigned long)a->session_id[2]<<16L)|
((unsigned long)a->session_id[3]<<24L);
return (l);
}
/*
* NB: If this function (or indeed the hash function which uses a sort of
* coarser function than this one) is changed, ensure
* SSL_CTX_has_matching_session_id() is checked accordingly. It relies on being
* able to construct an SSL_SESSION that will collide with any existing session
* with a matching session ID.
*/
static int
ssl_session_cmp(const SSL_SESSION *a, const SSL_SESSION *b)
{
if (a->ssl_version != b->ssl_version)
return (1);
if (a->session_id_length != b->session_id_length)
return (1);
if (timingsafe_memcmp(a->session_id, b->session_id, a->session_id_length) != 0)
return (1);
return (0);
}
/*
* These wrapper functions should remain rather than redeclaring
* SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each
* variable. The reason is that the functions aren't static, they're exposed via
* ssl.h.
*/
static unsigned long
ssl_session_LHASH_HASH(const void *arg)
{
const SSL_SESSION *a = arg;
return ssl_session_hash(a);
}
static int
ssl_session_LHASH_COMP(const void *arg1, const void *arg2)
{
const SSL_SESSION *a = arg1;
const SSL_SESSION *b = arg2;
return ssl_session_cmp(a, b);
}
SSL_CTX *
SSL_CTX_new(const SSL_METHOD *meth)
{
SSL_CTX *ret;
if (!OPENSSL_init_ssl(0, NULL)) {
SSLerrorx(SSL_R_LIBRARY_BUG);
return (NULL);
}
if (meth == NULL) {
SSLerrorx(SSL_R_NULL_SSL_METHOD_PASSED);
return (NULL);
}
if ((ret = calloc(1, sizeof(*ret))) == NULL) {
SSLerrorx(ERR_R_MALLOC_FAILURE);
return (NULL);
}
if ((ret->internal = calloc(1, sizeof(*ret->internal))) == NULL) {
free(ret);
SSLerrorx(ERR_R_MALLOC_FAILURE);
return (NULL);
}
if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) {
SSLerrorx(SSL_R_X509_VERIFICATION_SETUP_PROBLEMS);
goto err;
}
ret->method = meth;
ret->internal->min_tls_version = meth->min_tls_version;
ret->internal->max_tls_version = meth->max_tls_version;
ret->internal->min_proto_version = 0;
ret->internal->max_proto_version = 0;
ret->internal->mode = SSL_MODE_AUTO_RETRY;
ret->cert_store = NULL;
ret->internal->session_cache_mode = SSL_SESS_CACHE_SERVER;
ret->internal->session_cache_size = SSL_SESSION_CACHE_MAX_SIZE_DEFAULT;
ret->internal->session_cache_head = NULL;
ret->internal->session_cache_tail = NULL;
/* We take the system default */
ret->session_timeout = ssl_get_default_timeout();
ret->internal->new_session_cb = 0;
ret->internal->remove_session_cb = 0;
ret->internal->get_session_cb = 0;
ret->internal->generate_session_id = 0;
memset((char *)&ret->internal->stats, 0, sizeof(ret->internal->stats));
ret->references = 1;
ret->internal->quiet_shutdown = 0;
ret->internal->info_callback = NULL;
ret->internal->app_verify_callback = 0;
ret->internal->app_verify_arg = NULL;
ret->internal->max_cert_list = SSL_MAX_CERT_LIST_DEFAULT;
ret->internal->read_ahead = 0;
ret->internal->msg_callback = 0;
ret->internal->msg_callback_arg = NULL;
ret->verify_mode = SSL_VERIFY_NONE;
ret->sid_ctx_length = 0;
ret->internal->default_verify_callback = NULL;
if ((ret->internal->cert = ssl_cert_new()) == NULL)
goto err;
ret->default_passwd_callback = 0;
ret->default_passwd_callback_userdata = NULL;
ret->internal->client_cert_cb = 0;
ret->internal->app_gen_cookie_cb = 0;
ret->internal->app_verify_cookie_cb = 0;
ret->internal->sessions = lh_SSL_SESSION_new();
if (ret->internal->sessions == NULL)
goto err;
ret->cert_store = X509_STORE_new();
if (ret->cert_store == NULL)
goto err;
ssl_create_cipher_list(ret->method, &ret->cipher_list,
NULL, SSL_DEFAULT_CIPHER_LIST);
if (ret->cipher_list == NULL ||
sk_SSL_CIPHER_num(ret->cipher_list) <= 0) {
SSLerrorx(SSL_R_LIBRARY_HAS_NO_CIPHERS);
goto err2;
}
ret->param = X509_VERIFY_PARAM_new();
if (!ret->param)
goto err;
if ((ret->internal->client_CA = sk_X509_NAME_new_null()) == NULL)
goto err;
CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->internal->ex_data);
ret->extra_certs = NULL;
ret->internal->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
ret->internal->tlsext_servername_callback = 0;
ret->internal->tlsext_servername_arg = NULL;
/* Setup RFC4507 ticket keys */
arc4random_buf(ret->internal->tlsext_tick_key_name, 16);
arc4random_buf(ret->internal->tlsext_tick_hmac_key, 16);
arc4random_buf(ret->internal->tlsext_tick_aes_key, 16);
ret->internal->tlsext_status_cb = 0;
ret->internal->tlsext_status_arg = NULL;
#ifndef OPENSSL_NO_ENGINE
ret->internal->client_cert_engine = NULL;
#ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO
#define eng_strx(x) #x
#define eng_str(x) eng_strx(x)
/* Use specific client engine automatically... ignore errors */
{
ENGINE *eng;
eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
if (!eng) {
ERR_clear_error();
ENGINE_load_builtin_engines();
eng = ENGINE_by_id(eng_str(
OPENSSL_SSL_CLIENT_ENGINE_AUTO));
}
if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng))
ERR_clear_error();
}
#endif
#endif
/*
* Default is to connect to non-RI servers. When RI is more widely
* deployed might change this.
*/
ret->internal->options |= SSL_OP_LEGACY_SERVER_CONNECT;
return (ret);
err:
SSLerrorx(ERR_R_MALLOC_FAILURE);
err2:
SSL_CTX_free(ret);
return (NULL);
}
void
SSL_CTX_free(SSL_CTX *ctx)
{
int i;
if (ctx == NULL)
return;
i = CRYPTO_add(&ctx->references, -1, CRYPTO_LOCK_SSL_CTX);
if (i > 0)
return;
X509_VERIFY_PARAM_free(ctx->param);
/*
* Free internal session cache. However: the remove_cb() may reference
* the ex_data of SSL_CTX, thus the ex_data store can only be removed
* after the sessions were flushed.
* As the ex_data handling routines might also touch the session cache,
* the most secure solution seems to be: empty (flush) the cache, then
* free ex_data, then finally free the cache.
* (See ticket [openssl.org #212].)
*/
if (ctx->internal->sessions != NULL)
SSL_CTX_flush_sessions(ctx, 0);
CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ctx, &ctx->internal->ex_data);
lh_SSL_SESSION_free(ctx->internal->sessions);
X509_STORE_free(ctx->cert_store);
sk_SSL_CIPHER_free(ctx->cipher_list);
sk_SSL_CIPHER_free(ctx->internal->cipher_list_tls13);
ssl_cert_free(ctx->internal->cert);
sk_X509_NAME_pop_free(ctx->internal->client_CA, X509_NAME_free);
sk_X509_pop_free(ctx->extra_certs, X509_free);
#ifndef OPENSSL_NO_SRTP
if (ctx->internal->srtp_profiles)
sk_SRTP_PROTECTION_PROFILE_free(ctx->internal->srtp_profiles);
#endif
#ifndef OPENSSL_NO_ENGINE
ENGINE_finish(ctx->internal->client_cert_engine);
#endif
free(ctx->internal->tlsext_ecpointformatlist);
free(ctx->internal->tlsext_supportedgroups);
free(ctx->internal->alpn_client_proto_list);
free(ctx->internal);
free(ctx);
}
int
SSL_CTX_up_ref(SSL_CTX *ctx)
{
int refs = CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX);
return ((refs > 1) ? 1 : 0);
}
pem_password_cb *
SSL_CTX_get_default_passwd_cb(SSL_CTX *ctx)
{
return (ctx->default_passwd_callback);
}
void
SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb)
{
ctx->default_passwd_callback = cb;
}
void *
SSL_CTX_get_default_passwd_cb_userdata(SSL_CTX *ctx)
{
return ctx->default_passwd_callback_userdata;
}
void
SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx, void *u)
{
ctx->default_passwd_callback_userdata = u;
}
void
SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx,
int (*cb)(X509_STORE_CTX *, void *), void *arg)
{
ctx->internal->app_verify_callback = cb;
ctx->internal->app_verify_arg = arg;
}
void
SSL_CTX_set_verify(SSL_CTX *ctx, int mode, int (*cb)(int, X509_STORE_CTX *))
{
ctx->verify_mode = mode;
ctx->internal->default_verify_callback = cb;
}
void
SSL_CTX_set_verify_depth(SSL_CTX *ctx, int depth)
{
X509_VERIFY_PARAM_set_depth(ctx->param, depth);
}
void
ssl_set_cert_masks(SSL_CERT *c, const SSL_CIPHER *cipher)
{
unsigned long mask_a, mask_k;
SSL_CERT_PKEY *cpk;
if (c == NULL)
return;
mask_a = SSL_aNULL | SSL_aTLS1_3;
mask_k = SSL_kECDHE | SSL_kTLS1_3;
if (c->dhe_params != NULL || c->dhe_params_cb != NULL ||
c->dhe_params_auto != 0)
mask_k |= SSL_kDHE;
cpk = &(c->pkeys[SSL_PKEY_ECC]);
if (cpk->x509 != NULL && cpk->privatekey != NULL) {
/* Key usage, if present, must allow signing. */
if (X509_get_key_usage(cpk->x509) & X509v3_KU_DIGITAL_SIGNATURE)
mask_a |= SSL_aECDSA;
}
cpk = &(c->pkeys[SSL_PKEY_GOST01]);
if (cpk->x509 != NULL && cpk->privatekey != NULL) {
mask_k |= SSL_kGOST;
mask_a |= SSL_aGOST01;
}
cpk = &(c->pkeys[SSL_PKEY_RSA]);
if (cpk->x509 != NULL && cpk->privatekey != NULL) {
mask_a |= SSL_aRSA;
mask_k |= SSL_kRSA;
}
c->mask_k = mask_k;
c->mask_a = mask_a;
c->valid = 1;
}
/* See if this handshake is using an ECC cipher suite. */
int
ssl_using_ecc_cipher(SSL *s)
{
unsigned long alg_a, alg_k;
alg_a = s->s3->hs.cipher->algorithm_auth;
alg_k = s->s3->hs.cipher->algorithm_mkey;
return s->session->tlsext_ecpointformatlist != NULL &&
s->session->tlsext_ecpointformatlist_length > 0 &&
((alg_k & SSL_kECDHE) || (alg_a & SSL_aECDSA));
}
int
ssl_check_srvr_ecc_cert_and_alg(SSL *s, X509 *x)
{
const SSL_CIPHER *cs = s->s3->hs.cipher;
unsigned long alg_a;
alg_a = cs->algorithm_auth;
if (alg_a & SSL_aECDSA) {
/* Key usage, if present, must allow signing. */
if (!(X509_get_key_usage(x) & X509v3_KU_DIGITAL_SIGNATURE)) {
SSLerror(s, SSL_R_ECC_CERT_NOT_FOR_SIGNING);
return (0);
}
}
return (1);
}
SSL_CERT_PKEY *
ssl_get_server_send_pkey(const SSL *s)
{
unsigned long alg_a;
SSL_CERT *c;
int i;
c = s->cert;
ssl_set_cert_masks(c, s->s3->hs.cipher);
alg_a = s->s3->hs.cipher->algorithm_auth;
if (alg_a & SSL_aECDSA) {
i = SSL_PKEY_ECC;
} else if (alg_a & SSL_aRSA) {
i = SSL_PKEY_RSA;
} else if (alg_a & SSL_aGOST01) {
i = SSL_PKEY_GOST01;
} else { /* if (alg_a & SSL_aNULL) */
SSLerror(s, ERR_R_INTERNAL_ERROR);
return (NULL);
}
return (c->pkeys + i);
}
EVP_PKEY *
ssl_get_sign_pkey(SSL *s, const SSL_CIPHER *cipher, const EVP_MD **pmd,
const struct ssl_sigalg **sap)
{
const struct ssl_sigalg *sigalg = NULL;
EVP_PKEY *pkey = NULL;
unsigned long alg_a;
SSL_CERT *c;
int idx = -1;
alg_a = cipher->algorithm_auth;
c = s->cert;
if (alg_a & SSL_aRSA) {
idx = SSL_PKEY_RSA;
} else if ((alg_a & SSL_aECDSA) &&
(c->pkeys[SSL_PKEY_ECC].privatekey != NULL))
idx = SSL_PKEY_ECC;
if (idx == -1) {
SSLerror(s, ERR_R_INTERNAL_ERROR);
return (NULL);
}
pkey = c->pkeys[idx].privatekey;
if ((sigalg = ssl_sigalg_select(s, pkey)) == NULL) {
SSLerror(s, SSL_R_SIGNATURE_ALGORITHMS_ERROR);
return (NULL);
}
*pmd = sigalg->md();
*sap = sigalg;
return (pkey);
}
size_t
ssl_dhe_params_auto_key_bits(SSL *s)
{
SSL_CERT_PKEY *cpk;
int key_bits;
if (s->cert->dhe_params_auto == 2) {
key_bits = 1024;
} else if (s->s3->hs.cipher->algorithm_auth & SSL_aNULL) {
key_bits = 1024;
if (s->s3->hs.cipher->strength_bits == 256)
key_bits = 3072;
} else {
if ((cpk = ssl_get_server_send_pkey(s)) == NULL)
return 0;
if (cpk->privatekey == NULL ||
EVP_PKEY_get0_RSA(cpk->privatekey) == NULL)
return 0;
if ((key_bits = EVP_PKEY_bits(cpk->privatekey)) <= 0)
return 0;
}
return key_bits;
}
static int
ssl_should_update_external_cache(SSL *s, int mode)
{
int cache_mode;
cache_mode = s->session_ctx->internal->session_cache_mode;
/* Don't cache if mode says not to */
if ((cache_mode & mode) == 0)
return 0;
/* if it is not already cached, cache it */
if (!s->internal->hit)
return 1;
/* If it's TLS 1.3, do it to match OpenSSL */
if (s->s3->hs.negotiated_tls_version >= TLS1_3_VERSION)
return 1;
return 0;
}
static int
ssl_should_update_internal_cache(SSL *s, int mode)
{
int cache_mode;
cache_mode = s->session_ctx->internal->session_cache_mode;
/* Don't cache if mode says not to */
if ((cache_mode & mode) == 0)
return 0;
/* If it is already cached, don't cache it again */
if (s->internal->hit)
return 0;
if ((cache_mode & SSL_SESS_CACHE_NO_INTERNAL_STORE) != 0)
return 0;
/* If we are lesser than TLS 1.3, Cache it. */
if (s->s3->hs.negotiated_tls_version < TLS1_3_VERSION)
return 1;
/* Below this we consider TLS 1.3 or later */
/* If it's not a server, add it? OpenSSL does this. */
if (!s->server)
return 1;
/* XXX if we support early data / PSK need to add */
/*
* If we have the remove session callback, we will want
* to know about this even if it's a stateless ticket
* from 1.3 so we can know when it is removed.
*/
if (s->session_ctx->internal->remove_session_cb != NULL)
return 1;
/* If we have set OP_NO_TICKET, cache it. */
if ((s->internal->options & SSL_OP_NO_TICKET) != 0)
return 1;
/* Otherwise do not cache */
return 0;
}
void
ssl_update_cache(SSL *s, int mode)
{
int cache_mode, do_callback;
if (s->session->session_id_length == 0)
return;
cache_mode = s->session_ctx->internal->session_cache_mode;
do_callback = ssl_should_update_external_cache(s, mode);
if (ssl_should_update_internal_cache(s, mode)) {
/*
* XXX should we fail if the add to the internal cache
* fails? OpenSSL doesn't care..
*/
(void) SSL_CTX_add_session(s->session_ctx, s->session);
}
/*
* Update the "external cache" by calling the new session
* callback if present, even with TLS 1.3 without early data
* "because some application just want to know about the
* creation of a session and aren't doing a full cache".
* Apparently, if they are doing a full cache, they'll have
* some fun, but we endeavour to give application writers the
* same glorious experience they expect from OpenSSL which
* does it this way.
*/
if (do_callback && s->session_ctx->internal->new_session_cb != NULL) {
CRYPTO_add(&s->session->references, 1, CRYPTO_LOCK_SSL_SESSION);
if (!s->session_ctx->internal->new_session_cb(s, s->session))
SSL_SESSION_free(s->session);
}
/* Auto flush every 255 connections. */
if (!(cache_mode & SSL_SESS_CACHE_NO_AUTO_CLEAR) &&
(cache_mode & mode) != 0) {
int connections;
if (mode & SSL_SESS_CACHE_CLIENT)
connections = s->session_ctx->internal->stats.sess_connect_good;
else
connections = s->session_ctx->internal->stats.sess_accept_good;
if ((connections & 0xff) == 0xff)
SSL_CTX_flush_sessions(s->session_ctx, time(NULL));
}
}
const SSL_METHOD *
SSL_get_ssl_method(SSL *s)
{
return (s->method);
}
int
SSL_set_ssl_method(SSL *s, const SSL_METHOD *method)
{
int (*handshake_func)(SSL *) = NULL;
int ret = 1;
if (s->method == method)
return (ret);
if (s->internal->handshake_func == s->method->ssl_connect)
handshake_func = method->ssl_connect;
else if (s->internal->handshake_func == s->method->ssl_accept)
handshake_func = method->ssl_accept;
if (s->method->version == method->version) {
s->method = method;
} else {
s->method->ssl_free(s);
s->method = method;
ret = s->method->ssl_new(s);
}
s->internal->handshake_func = handshake_func;
return (ret);
}
int
SSL_get_error(const SSL *s, int i)
{
unsigned long l;
int reason;
BIO *bio;
if (i > 0)
return (SSL_ERROR_NONE);
/*
* Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake
* etc, where we do encode the error.
*/
if ((l = ERR_peek_error()) != 0) {
if (ERR_GET_LIB(l) == ERR_LIB_SYS)
return (SSL_ERROR_SYSCALL);
else
return (SSL_ERROR_SSL);
}
if (SSL_want_read(s)) {
bio = SSL_get_rbio(s);
if (BIO_should_read(bio)) {
return (SSL_ERROR_WANT_READ);
} else if (BIO_should_write(bio)) {
/*
* This one doesn't make too much sense... We never
* try to write to the rbio, and an application
* program where rbio and wbio are separate couldn't
* even know what it should wait for. However if we
* ever set s->internal->rwstate incorrectly (so that we have
* SSL_want_read(s) instead of SSL_want_write(s))
* and rbio and wbio *are* the same, this test works
* around that bug; so it might be safer to keep it.
*/
return (SSL_ERROR_WANT_WRITE);
} else if (BIO_should_io_special(bio)) {
reason = BIO_get_retry_reason(bio);
if (reason == BIO_RR_CONNECT)
return (SSL_ERROR_WANT_CONNECT);
else if (reason == BIO_RR_ACCEPT)
return (SSL_ERROR_WANT_ACCEPT);
else
return (SSL_ERROR_SYSCALL); /* unknown */
}
}
if (SSL_want_write(s)) {
bio = SSL_get_wbio(s);
if (BIO_should_write(bio)) {
return (SSL_ERROR_WANT_WRITE);
} else if (BIO_should_read(bio)) {
/*
* See above (SSL_want_read(s) with
* BIO_should_write(bio))
*/
return (SSL_ERROR_WANT_READ);
} else if (BIO_should_io_special(bio)) {
reason = BIO_get_retry_reason(bio);
if (reason == BIO_RR_CONNECT)
return (SSL_ERROR_WANT_CONNECT);
else if (reason == BIO_RR_ACCEPT)
return (SSL_ERROR_WANT_ACCEPT);
else
return (SSL_ERROR_SYSCALL);
}
}
if (SSL_want_x509_lookup(s))
return (SSL_ERROR_WANT_X509_LOOKUP);
if ((s->internal->shutdown & SSL_RECEIVED_SHUTDOWN) &&
(s->s3->warn_alert == SSL_AD_CLOSE_NOTIFY))
return (SSL_ERROR_ZERO_RETURN);
return (SSL_ERROR_SYSCALL);
}
int
SSL_do_handshake(SSL *s)
{
if (s->internal->handshake_func == NULL) {
SSLerror(s, SSL_R_CONNECTION_TYPE_NOT_SET);
return (-1);
}
s->method->ssl_renegotiate_check(s);
if (!SSL_in_init(s) && !SSL_in_before(s))
return 1;
return s->internal->handshake_func(s);
}
/*
* For the next 2 functions, SSL_clear() sets shutdown and so
* one of these calls will reset it
*/
void
SSL_set_accept_state(SSL *s)
{
s->server = 1;
s->internal->shutdown = 0;
s->s3->hs.state = SSL_ST_ACCEPT|SSL_ST_BEFORE;
s->internal->handshake_func = s->method->ssl_accept;
ssl_clear_cipher_state(s);
}
void
SSL_set_connect_state(SSL *s)
{
s->server = 0;
s->internal->shutdown = 0;
s->s3->hs.state = SSL_ST_CONNECT|SSL_ST_BEFORE;
s->internal->handshake_func = s->method->ssl_connect;
ssl_clear_cipher_state(s);
}
int
ssl_undefined_function(SSL *s)
{
SSLerror(s, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
return (0);
}
int
ssl_undefined_void_function(void)
{
SSLerrorx(ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
return (0);
}
int
ssl_undefined_const_function(const SSL *s)
{
SSLerror(s, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
return (0);
}
const char *
ssl_version_string(int ver)
{
switch (ver) {
case TLS1_VERSION:
return (SSL_TXT_TLSV1);
case TLS1_1_VERSION:
return (SSL_TXT_TLSV1_1);
case TLS1_2_VERSION:
return (SSL_TXT_TLSV1_2);
case TLS1_3_VERSION:
return (SSL_TXT_TLSV1_3);
case DTLS1_VERSION:
return (SSL_TXT_DTLS1);
case DTLS1_2_VERSION:
return (SSL_TXT_DTLS1_2);
default:
return ("unknown");
}
}
const char *
SSL_get_version(const SSL *s)
{
return ssl_version_string(s->version);
}
SSL *
SSL_dup(SSL *s)
{
STACK_OF(X509_NAME) *sk;
X509_NAME *xn;
SSL *ret;
int i;
if ((ret = SSL_new(SSL_get_SSL_CTX(s))) == NULL)
goto err;
ret->version = s->version;
ret->method = s->method;
if (s->session != NULL) {
if (!SSL_copy_session_id(ret, s))
goto err;
} else {
/*
* No session has been established yet, so we have to expect
* that s->cert or ret->cert will be changed later --
* they should not both point to the same object,
* and thus we can't use SSL_copy_session_id.
*/
ret->method->ssl_free(ret);
ret->method = s->method;
ret->method->ssl_new(ret);
ssl_cert_free(ret->cert);
if ((ret->cert = ssl_cert_dup(s->cert)) == NULL)
goto err;
if (!SSL_set_session_id_context(ret, s->sid_ctx,
s->sid_ctx_length))
goto err;
}
ret->internal->options = s->internal->options;
ret->internal->mode = s->internal->mode;
SSL_set_max_cert_list(ret, SSL_get_max_cert_list(s));
SSL_set_read_ahead(ret, SSL_get_read_ahead(s));
ret->internal->msg_callback = s->internal->msg_callback;
ret->internal->msg_callback_arg = s->internal->msg_callback_arg;
SSL_set_verify(ret, SSL_get_verify_mode(s),
SSL_get_verify_callback(s));
SSL_set_verify_depth(ret, SSL_get_verify_depth(s));
ret->internal->generate_session_id = s->internal->generate_session_id;
SSL_set_info_callback(ret, SSL_get_info_callback(s));
ret->internal->debug = s->internal->debug;
/* copy app data, a little dangerous perhaps */
if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL,
&ret->internal->ex_data, &s->internal->ex_data))
goto err;
/* setup rbio, and wbio */
if (s->rbio != NULL) {
if (!BIO_dup_state(s->rbio,(char *)&ret->rbio))
goto err;
}
if (s->wbio != NULL) {
if (s->wbio != s->rbio) {
if (!BIO_dup_state(s->wbio,(char *)&ret->wbio))
goto err;
} else
ret->wbio = ret->rbio;
}
ret->internal->rwstate = s->internal->rwstate;
ret->internal->in_handshake = s->internal->in_handshake;
ret->internal->handshake_func = s->internal->handshake_func;
ret->server = s->server;
ret->internal->renegotiate = s->internal->renegotiate;
ret->internal->new_session = s->internal->new_session;
ret->internal->quiet_shutdown = s->internal->quiet_shutdown;
ret->internal->shutdown = s->internal->shutdown;
/* SSL_dup does not really work at any state, though */
ret->s3->hs.state = s->s3->hs.state;
ret->internal->rstate = s->internal->rstate;
/*
* Would have to copy ret->init_buf, ret->init_msg, ret->init_num,
* ret->init_off
*/
ret->internal->init_num = 0;
ret->internal->hit = s->internal->hit;
X509_VERIFY_PARAM_inherit(ret->param, s->param);
if (s->cipher_list != NULL) {
if ((ret->cipher_list =
sk_SSL_CIPHER_dup(s->cipher_list)) == NULL)
goto err;
}
if (s->internal->cipher_list_tls13 != NULL) {
if ((ret->internal->cipher_list_tls13 =
sk_SSL_CIPHER_dup(s->internal->cipher_list_tls13)) == NULL)
goto err;
}
/* Dup the client_CA list */
if (s->internal->client_CA != NULL) {
if ((sk = sk_X509_NAME_dup(s->internal->client_CA)) == NULL) goto err;
ret->internal->client_CA = sk;
for (i = 0; i < sk_X509_NAME_num(sk); i++) {
xn = sk_X509_NAME_value(sk, i);
if (sk_X509_NAME_set(sk, i,
X509_NAME_dup(xn)) == NULL) {
X509_NAME_free(xn);
goto err;
}
}
}
return ret;
err:
SSL_free(ret);
return NULL;
}
void
ssl_clear_cipher_state(SSL *s)
{
tls12_record_layer_clear_read_state(s->internal->rl);
tls12_record_layer_clear_write_state(s->internal->rl);
}
void
ssl_info_callback(const SSL *s, int type, int value)
{
ssl_info_callback_fn *cb;
if ((cb = s->internal->info_callback) == NULL)
cb = s->ctx->internal->info_callback;
if (cb != NULL)
cb(s, type, value);
}
void
ssl_msg_callback(SSL *s, int is_write, int content_type,
const void *msg_buf, size_t msg_len)
{
if (s->internal->msg_callback != NULL)
s->internal->msg_callback(is_write, s->version, content_type,
msg_buf, msg_len, s, s->internal->msg_callback_arg);
}
/* Fix this function so that it takes an optional type parameter */
X509 *
SSL_get_certificate(const SSL *s)
{
return (s->cert->key->x509);
}
/* Fix this function so that it takes an optional type parameter */
EVP_PKEY *
SSL_get_privatekey(const SSL *s)
{
return (s->cert->key->privatekey);
}
const SSL_CIPHER *
SSL_get_current_cipher(const SSL *s)
{
if ((s->session != NULL) && (s->session->cipher != NULL))
return (s->session->cipher);
return (NULL);
}
const void *
SSL_get_current_compression(SSL *s)
{
return (NULL);
}
const void *
SSL_get_current_expansion(SSL *s)
{
return (NULL);
}
size_t
SSL_get_client_random(const SSL *s, unsigned char *out, size_t max_out)
{
size_t len = sizeof(s->s3->client_random);
if (out == NULL)
return len;
if (len > max_out)
len = max_out;
memcpy(out, s->s3->client_random, len);
return len;
}
size_t
SSL_get_server_random(const SSL *s, unsigned char *out, size_t max_out)
{
size_t len = sizeof(s->s3->server_random);
if (out == NULL)
return len;
if (len > max_out)
len = max_out;
memcpy(out, s->s3->server_random, len);
return len;
}
int
ssl_init_wbio_buffer(SSL *s, int push)
{
BIO *bbio;
if (s->bbio == NULL) {
bbio = BIO_new(BIO_f_buffer());
if (bbio == NULL)
return (0);
s->bbio = bbio;
} else {
bbio = s->bbio;
if (s->bbio == s->wbio)
s->wbio = BIO_pop(s->wbio);
}
(void)BIO_reset(bbio);
/* if (!BIO_set_write_buffer_size(bbio,16*1024)) */
if (!BIO_set_read_buffer_size(bbio, 1)) {
SSLerror(s, ERR_R_BUF_LIB);
return (0);
}
if (push) {
if (s->wbio != bbio)
s->wbio = BIO_push(bbio, s->wbio);
} else {
if (s->wbio == bbio)
s->wbio = BIO_pop(bbio);
}
return (1);
}
void
ssl_free_wbio_buffer(SSL *s)
{
if (s == NULL)
return;
if (s->bbio == NULL)
return;
if (s->bbio == s->wbio) {
/* remove buffering */
s->wbio = BIO_pop(s->wbio);
}
BIO_free(s->bbio);
s->bbio = NULL;
}
void
SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx, int mode)
{
ctx->internal->quiet_shutdown = mode;
}
int
SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx)
{
return (ctx->internal->quiet_shutdown);
}
void
SSL_set_quiet_shutdown(SSL *s, int mode)
{
s->internal->quiet_shutdown = mode;
}
int
SSL_get_quiet_shutdown(const SSL *s)
{
return (s->internal->quiet_shutdown);
}
void
SSL_set_shutdown(SSL *s, int mode)
{
s->internal->shutdown = mode;
}
int
SSL_get_shutdown(const SSL *s)
{
return (s->internal->shutdown);
}
int
SSL_version(const SSL *s)
{
return (s->version);
}
SSL_CTX *
SSL_get_SSL_CTX(const SSL *ssl)
{
return (ssl->ctx);
}
SSL_CTX *
SSL_set_SSL_CTX(SSL *ssl, SSL_CTX* ctx)
{
SSL_CERT *new_cert;
if (ctx == NULL)
ctx = ssl->initial_ctx;
if (ssl->ctx == ctx)
return (ssl->ctx);
if ((new_cert = ssl_cert_dup(ctx->internal->cert)) == NULL)
return NULL;
ssl_cert_free(ssl->cert);
ssl->cert = new_cert;
SSL_CTX_up_ref(ctx);
SSL_CTX_free(ssl->ctx); /* decrement reference count */
ssl->ctx = ctx;
return (ssl->ctx);
}
int
SSL_CTX_set_default_verify_paths(SSL_CTX *ctx)
{
return (X509_STORE_set_default_paths(ctx->cert_store));
}
int
SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile,
const char *CApath)
{
return (X509_STORE_load_locations(ctx->cert_store, CAfile, CApath));
}
int
SSL_CTX_load_verify_mem(SSL_CTX *ctx, void *buf, int len)
{
return (X509_STORE_load_mem(ctx->cert_store, buf, len));
}
void
SSL_set_info_callback(SSL *ssl, void (*cb)(const SSL *ssl, int type, int val))
{
ssl->internal->info_callback = cb;
}
void (*SSL_get_info_callback(const SSL *ssl))(const SSL *ssl, int type, int val)
{
return (ssl->internal->info_callback);
}
int
SSL_state(const SSL *ssl)
{
return (ssl->s3->hs.state);
}
void
SSL_set_state(SSL *ssl, int state)
{
ssl->s3->hs.state = state;
}
void
SSL_set_verify_result(SSL *ssl, long arg)
{
ssl->verify_result = arg;
}
long
SSL_get_verify_result(const SSL *ssl)
{
return (ssl->verify_result);
}
int
SSL_verify_client_post_handshake(SSL *ssl)
{
return 0;
}
void
SSL_CTX_set_post_handshake_auth(SSL_CTX *ctx, int val)
{
return;
}
void
SSL_set_post_handshake_auth(SSL *ssl, int val)
{
return;
}
int
SSL_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func,
CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func)
{
return (CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL, argl, argp,
new_func, dup_func, free_func));
}
int
SSL_set_ex_data(SSL *s, int idx, void *arg)
{
return (CRYPTO_set_ex_data(&s->internal->ex_data, idx, arg));
}
void *
SSL_get_ex_data(const SSL *s, int idx)
{
return (CRYPTO_get_ex_data(&s->internal->ex_data, idx));
}
int
SSL_CTX_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func,
CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func)
{
return (CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL_CTX, argl, argp,
new_func, dup_func, free_func));
}
int
SSL_CTX_set_ex_data(SSL_CTX *s, int idx, void *arg)
{
return (CRYPTO_set_ex_data(&s->internal->ex_data, idx, arg));
}
void *
SSL_CTX_get_ex_data(const SSL_CTX *s, int idx)
{
return (CRYPTO_get_ex_data(&s->internal->ex_data, idx));
}
int
ssl_ok(SSL *s)
{
return (1);
}
X509_STORE *
SSL_CTX_get_cert_store(const SSL_CTX *ctx)
{
return (ctx->cert_store);
}
void
SSL_CTX_set_cert_store(SSL_CTX *ctx, X509_STORE *store)
{
X509_STORE_free(ctx->cert_store);
ctx->cert_store = store;
}
X509 *
SSL_CTX_get0_certificate(const SSL_CTX *ctx)
{
if (ctx->internal->cert == NULL)
return NULL;
return ctx->internal->cert->key->x509;
}
EVP_PKEY *
SSL_CTX_get0_privatekey(const SSL_CTX *ctx)
{
if (ctx->internal->cert == NULL)
return NULL;
return ctx->internal->cert->key->privatekey;
}
int
SSL_want(const SSL *s)
{
return (s->internal->rwstate);
}
void
SSL_CTX_set_tmp_rsa_callback(SSL_CTX *ctx, RSA *(*cb)(SSL *ssl, int is_export,
int keylength))
{
SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_RSA_CB,(void (*)(void))cb);
}
void
SSL_set_tmp_rsa_callback(SSL *ssl, RSA *(*cb)(SSL *ssl, int is_export,
int keylength))
{
SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_RSA_CB,(void (*)(void))cb);
}
void
SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx, DH *(*dh)(SSL *ssl, int is_export,
int keylength))
{
SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_DH_CB,(void (*)(void))dh);
}
void
SSL_set_tmp_dh_callback(SSL *ssl, DH *(*dh)(SSL *ssl, int is_export,
int keylength))
{
SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_DH_CB,(void (*)(void))dh);
}
void
SSL_CTX_set_tmp_ecdh_callback(SSL_CTX *ctx, EC_KEY *(*ecdh)(SSL *ssl,
int is_export, int keylength))
{
SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_ECDH_CB,
(void (*)(void))ecdh);
}
void
SSL_set_tmp_ecdh_callback(SSL *ssl, EC_KEY *(*ecdh)(SSL *ssl, int is_export,
int keylength))
{
SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_ECDH_CB,(void (*)(void))ecdh);
}
void
SSL_CTX_set_msg_callback(SSL_CTX *ctx, void (*cb)(int write_p, int version,
int content_type, const void *buf, size_t len, SSL *ssl, void *arg))
{
SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK,
(void (*)(void))cb);
}
void
SSL_set_msg_callback(SSL *ssl, void (*cb)(int write_p, int version,
int content_type, const void *buf, size_t len, SSL *ssl, void *arg))
{
SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
}
void
SSL_set_debug(SSL *s, int debug)
{
s->internal->debug = debug;
}
int
SSL_cache_hit(SSL *s)
{
return (s->internal->hit);
}
int
SSL_CTX_get_min_proto_version(SSL_CTX *ctx)
{
return ctx->internal->min_proto_version;
}
int
SSL_CTX_set_min_proto_version(SSL_CTX *ctx, uint16_t version)
{
return ssl_version_set_min(ctx->method, version,
ctx->internal->max_tls_version, &ctx->internal->min_tls_version,
&ctx->internal->min_proto_version);
}
int
SSL_CTX_get_max_proto_version(SSL_CTX *ctx)
{
return ctx->internal->max_proto_version;
}
int
SSL_CTX_set_max_proto_version(SSL_CTX *ctx, uint16_t version)
{
return ssl_version_set_max(ctx->method, version,
ctx->internal->min_tls_version, &ctx->internal->max_tls_version,
&ctx->internal->max_proto_version);
}
int
SSL_get_min_proto_version(SSL *ssl)
{
return ssl->internal->min_proto_version;
}
int
SSL_set_min_proto_version(SSL *ssl, uint16_t version)
{
return ssl_version_set_min(ssl->method, version,
ssl->internal->max_tls_version, &ssl->internal->min_tls_version,
&ssl->internal->min_proto_version);
}
int
SSL_get_max_proto_version(SSL *ssl)
{
return ssl->internal->max_proto_version;
}
int
SSL_set_max_proto_version(SSL *ssl, uint16_t version)
{
return ssl_version_set_max(ssl->method, version,
ssl->internal->min_tls_version, &ssl->internal->max_tls_version,
&ssl->internal->max_proto_version);
}
const SSL_METHOD *
SSL_CTX_get_ssl_method(const SSL_CTX *ctx)
{
return ctx->method;
}
static int
ssl_cipher_id_cmp_BSEARCH_CMP_FN(const void *a_, const void *b_)
{
SSL_CIPHER const *a = a_;
SSL_CIPHER const *b = b_;
return ssl_cipher_id_cmp(a, b);
}
SSL_CIPHER *
OBJ_bsearch_ssl_cipher_id(SSL_CIPHER *key, SSL_CIPHER const *base, int num)
{
return (SSL_CIPHER *)OBJ_bsearch_(key, base, num, sizeof(SSL_CIPHER),
ssl_cipher_id_cmp_BSEARCH_CMP_FN);
}
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