early-access version 1255
This commit is contained in:
pineappleEA
590
externals/libressl/ssl/bio_ssl.c
vendored
Executable file
590
externals/libressl/ssl/bio_ssl.c
vendored
Executable file
@@ -0,0 +1,590 @@
|
||||
/* $OpenBSD: bio_ssl.c,v 1.29 2018/08/24 20:30:21 tb 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.]
|
||||
*/
|
||||
|
||||
#include <errno.h>
|
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <openssl/bio.h>
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#include <openssl/crypto.h>
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#include <openssl/err.h>
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#include <openssl/ssl.h>
|
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|
||||
#include "ssl_locl.h"
|
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|
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static int ssl_write(BIO *h, const char *buf, int num);
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static int ssl_read(BIO *h, char *buf, int size);
|
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static int ssl_puts(BIO *h, const char *str);
|
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static long ssl_ctrl(BIO *h, int cmd, long arg1, void *arg2);
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static int ssl_new(BIO *h);
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static int ssl_free(BIO *data);
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static long ssl_callback_ctrl(BIO *h, int cmd, bio_info_cb *fp);
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typedef struct bio_ssl_st {
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SSL *ssl; /* The ssl handle :-) */
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/* re-negotiate every time the total number of bytes is this size */
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int num_renegotiates;
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unsigned long renegotiate_count;
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unsigned long byte_count;
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unsigned long renegotiate_timeout;
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time_t last_time;
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} BIO_SSL;
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static const BIO_METHOD methods_sslp = {
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.type = BIO_TYPE_SSL,
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.name = "ssl",
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.bwrite = ssl_write,
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.bread = ssl_read,
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.bputs = ssl_puts,
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.ctrl = ssl_ctrl,
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.create = ssl_new,
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.destroy = ssl_free,
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||||
.callback_ctrl = ssl_callback_ctrl,
|
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};
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||||
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||||
const BIO_METHOD *
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||||
BIO_f_ssl(void)
|
||||
{
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||||
return (&methods_sslp);
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}
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||||
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static int
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||||
ssl_new(BIO *bi)
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{
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||||
BIO_SSL *bs;
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bs = calloc(1, sizeof(BIO_SSL));
|
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if (bs == NULL) {
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SSLerrorx(ERR_R_MALLOC_FAILURE);
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return (0);
|
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}
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bi->init = 0;
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bi->ptr = (char *)bs;
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bi->flags = 0;
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return (1);
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}
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|
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static int
|
||||
ssl_free(BIO *a)
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{
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BIO_SSL *bs;
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|
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if (a == NULL)
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return (0);
|
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bs = (BIO_SSL *)a->ptr;
|
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if (bs->ssl != NULL)
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SSL_shutdown(bs->ssl);
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if (a->shutdown) {
|
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if (a->init && (bs->ssl != NULL))
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SSL_free(bs->ssl);
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a->init = 0;
|
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a->flags = 0;
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}
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free(a->ptr);
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return (1);
|
||||
}
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static int
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ssl_read(BIO *b, char *out, int outl)
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{
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int ret = 1;
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BIO_SSL *sb;
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SSL *ssl;
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int retry_reason = 0;
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int r = 0;
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if (out == NULL)
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return (0);
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sb = (BIO_SSL *)b->ptr;
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ssl = sb->ssl;
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BIO_clear_retry_flags(b);
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||||
ret = SSL_read(ssl, out, outl);
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switch (SSL_get_error(ssl, ret)) {
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||||
case SSL_ERROR_NONE:
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if (ret <= 0)
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break;
|
||||
if (sb->renegotiate_count > 0) {
|
||||
sb->byte_count += ret;
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||||
if (sb->byte_count > sb->renegotiate_count) {
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sb->byte_count = 0;
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||||
sb->num_renegotiates++;
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||||
SSL_renegotiate(ssl);
|
||||
r = 1;
|
||||
}
|
||||
}
|
||||
if ((sb->renegotiate_timeout > 0) && (!r)) {
|
||||
time_t tm;
|
||||
|
||||
tm = time(NULL);
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||||
if (tm > sb->last_time + sb->renegotiate_timeout) {
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||||
sb->last_time = tm;
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||||
sb->num_renegotiates++;
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SSL_renegotiate(ssl);
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||||
}
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||||
}
|
||||
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||||
break;
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case SSL_ERROR_WANT_READ:
|
||||
BIO_set_retry_read(b);
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break;
|
||||
case SSL_ERROR_WANT_WRITE:
|
||||
BIO_set_retry_write(b);
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break;
|
||||
case SSL_ERROR_WANT_X509_LOOKUP:
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BIO_set_retry_special(b);
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retry_reason = BIO_RR_SSL_X509_LOOKUP;
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break;
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case SSL_ERROR_WANT_ACCEPT:
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BIO_set_retry_special(b);
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retry_reason = BIO_RR_ACCEPT;
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break;
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case SSL_ERROR_WANT_CONNECT:
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BIO_set_retry_special(b);
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retry_reason = BIO_RR_CONNECT;
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break;
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case SSL_ERROR_SYSCALL:
|
||||
case SSL_ERROR_SSL:
|
||||
case SSL_ERROR_ZERO_RETURN:
|
||||
default:
|
||||
break;
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||||
}
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b->retry_reason = retry_reason;
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return (ret);
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}
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static int
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ssl_write(BIO *b, const char *out, int outl)
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{
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int ret, r = 0;
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int retry_reason = 0;
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SSL *ssl;
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BIO_SSL *bs;
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if (out == NULL)
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return (0);
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bs = (BIO_SSL *)b->ptr;
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ssl = bs->ssl;
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BIO_clear_retry_flags(b);
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/* ret=SSL_do_handshake(ssl);
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if (ret > 0) */
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ret = SSL_write(ssl, out, outl);
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switch (SSL_get_error(ssl, ret)) {
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case SSL_ERROR_NONE:
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if (ret <= 0)
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break;
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if (bs->renegotiate_count > 0) {
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bs->byte_count += ret;
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if (bs->byte_count > bs->renegotiate_count) {
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bs->byte_count = 0;
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bs->num_renegotiates++;
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SSL_renegotiate(ssl);
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r = 1;
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}
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}
|
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if ((bs->renegotiate_timeout > 0) && (!r)) {
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time_t tm;
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tm = time(NULL);
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if (tm > bs->last_time + bs->renegotiate_timeout) {
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bs->last_time = tm;
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bs->num_renegotiates++;
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SSL_renegotiate(ssl);
|
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}
|
||||
}
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||||
break;
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case SSL_ERROR_WANT_WRITE:
|
||||
BIO_set_retry_write(b);
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break;
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case SSL_ERROR_WANT_READ:
|
||||
BIO_set_retry_read(b);
|
||||
break;
|
||||
case SSL_ERROR_WANT_X509_LOOKUP:
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BIO_set_retry_special(b);
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retry_reason = BIO_RR_SSL_X509_LOOKUP;
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||||
break;
|
||||
case SSL_ERROR_WANT_CONNECT:
|
||||
BIO_set_retry_special(b);
|
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retry_reason = BIO_RR_CONNECT;
|
||||
case SSL_ERROR_SYSCALL:
|
||||
case SSL_ERROR_SSL:
|
||||
default:
|
||||
break;
|
||||
}
|
||||
|
||||
b->retry_reason = retry_reason;
|
||||
return (ret);
|
||||
}
|
||||
|
||||
static long
|
||||
ssl_ctrl(BIO *b, int cmd, long num, void *ptr)
|
||||
{
|
||||
SSL **sslp, *ssl;
|
||||
BIO_SSL *bs;
|
||||
BIO *dbio, *bio;
|
||||
long ret = 1;
|
||||
|
||||
bs = (BIO_SSL *)b->ptr;
|
||||
ssl = bs->ssl;
|
||||
if ((ssl == NULL) && (cmd != BIO_C_SET_SSL))
|
||||
return (0);
|
||||
switch (cmd) {
|
||||
case BIO_CTRL_RESET:
|
||||
SSL_shutdown(ssl);
|
||||
|
||||
if (ssl->internal->handshake_func ==
|
||||
ssl->method->internal->ssl_connect)
|
||||
SSL_set_connect_state(ssl);
|
||||
else if (ssl->internal->handshake_func ==
|
||||
ssl->method->internal->ssl_accept)
|
||||
SSL_set_accept_state(ssl);
|
||||
|
||||
SSL_clear(ssl);
|
||||
|
||||
if (b->next_bio != NULL)
|
||||
ret = BIO_ctrl(b->next_bio, cmd, num, ptr);
|
||||
else if (ssl->rbio != NULL)
|
||||
ret = BIO_ctrl(ssl->rbio, cmd, num, ptr);
|
||||
else
|
||||
ret = 1;
|
||||
break;
|
||||
case BIO_CTRL_INFO:
|
||||
ret = 0;
|
||||
break;
|
||||
case BIO_C_SSL_MODE:
|
||||
if (num) /* client mode */
|
||||
SSL_set_connect_state(ssl);
|
||||
else
|
||||
SSL_set_accept_state(ssl);
|
||||
break;
|
||||
case BIO_C_SET_SSL_RENEGOTIATE_TIMEOUT:
|
||||
ret = bs->renegotiate_timeout;
|
||||
if (num < 60)
|
||||
num = 5;
|
||||
bs->renegotiate_timeout = (unsigned long)num;
|
||||
bs->last_time = time(NULL);
|
||||
break;
|
||||
case BIO_C_SET_SSL_RENEGOTIATE_BYTES:
|
||||
ret = bs->renegotiate_count;
|
||||
if ((long)num >=512)
|
||||
bs->renegotiate_count = (unsigned long)num;
|
||||
break;
|
||||
case BIO_C_GET_SSL_NUM_RENEGOTIATES:
|
||||
ret = bs->num_renegotiates;
|
||||
break;
|
||||
case BIO_C_SET_SSL:
|
||||
if (ssl != NULL) {
|
||||
ssl_free(b);
|
||||
if (!ssl_new(b))
|
||||
return 0;
|
||||
}
|
||||
b->shutdown = (int)num;
|
||||
ssl = (SSL *)ptr;
|
||||
((BIO_SSL *)b->ptr)->ssl = ssl;
|
||||
bio = SSL_get_rbio(ssl);
|
||||
if (bio != NULL) {
|
||||
if (b->next_bio != NULL)
|
||||
BIO_push(bio, b->next_bio);
|
||||
b->next_bio = bio;
|
||||
CRYPTO_add(&bio->references, 1, CRYPTO_LOCK_BIO);
|
||||
}
|
||||
b->init = 1;
|
||||
break;
|
||||
case BIO_C_GET_SSL:
|
||||
if (ptr != NULL) {
|
||||
sslp = (SSL **)ptr;
|
||||
*sslp = ssl;
|
||||
} else
|
||||
ret = 0;
|
||||
break;
|
||||
case BIO_CTRL_GET_CLOSE:
|
||||
ret = b->shutdown;
|
||||
break;
|
||||
case BIO_CTRL_SET_CLOSE:
|
||||
b->shutdown = (int)num;
|
||||
break;
|
||||
case BIO_CTRL_WPENDING:
|
||||
ret = BIO_ctrl(ssl->wbio, cmd, num, ptr);
|
||||
break;
|
||||
case BIO_CTRL_PENDING:
|
||||
ret = SSL_pending(ssl);
|
||||
if (ret == 0)
|
||||
ret = BIO_pending(ssl->rbio);
|
||||
break;
|
||||
case BIO_CTRL_FLUSH:
|
||||
BIO_clear_retry_flags(b);
|
||||
ret = BIO_ctrl(ssl->wbio, cmd, num, ptr);
|
||||
BIO_copy_next_retry(b);
|
||||
break;
|
||||
case BIO_CTRL_PUSH:
|
||||
if ((b->next_bio != NULL) && (b->next_bio != ssl->rbio)) {
|
||||
SSL_set_bio(ssl, b->next_bio, b->next_bio);
|
||||
CRYPTO_add(&b->next_bio->references, 1,
|
||||
CRYPTO_LOCK_BIO);
|
||||
}
|
||||
break;
|
||||
case BIO_CTRL_POP:
|
||||
/* Only detach if we are the BIO explicitly being popped */
|
||||
if (b == ptr) {
|
||||
/* Shouldn't happen in practice because the
|
||||
* rbio and wbio are the same when pushed.
|
||||
*/
|
||||
if (ssl->rbio != ssl->wbio)
|
||||
BIO_free_all(ssl->wbio);
|
||||
if (b->next_bio != NULL)
|
||||
CRYPTO_add(&b->next_bio->references, -1, CRYPTO_LOCK_BIO);
|
||||
ssl->wbio = NULL;
|
||||
ssl->rbio = NULL;
|
||||
}
|
||||
break;
|
||||
case BIO_C_DO_STATE_MACHINE:
|
||||
BIO_clear_retry_flags(b);
|
||||
|
||||
b->retry_reason = 0;
|
||||
ret = (int)SSL_do_handshake(ssl);
|
||||
|
||||
switch (SSL_get_error(ssl, (int)ret)) {
|
||||
case SSL_ERROR_WANT_READ:
|
||||
BIO_set_flags(b,
|
||||
BIO_FLAGS_READ|BIO_FLAGS_SHOULD_RETRY);
|
||||
break;
|
||||
case SSL_ERROR_WANT_WRITE:
|
||||
BIO_set_flags(b,
|
||||
BIO_FLAGS_WRITE|BIO_FLAGS_SHOULD_RETRY);
|
||||
break;
|
||||
case SSL_ERROR_WANT_CONNECT:
|
||||
BIO_set_flags(b,
|
||||
BIO_FLAGS_IO_SPECIAL|BIO_FLAGS_SHOULD_RETRY);
|
||||
b->retry_reason = b->next_bio->retry_reason;
|
||||
break;
|
||||
default:
|
||||
break;
|
||||
}
|
||||
break;
|
||||
case BIO_CTRL_DUP:
|
||||
dbio = (BIO *)ptr;
|
||||
if (((BIO_SSL *)dbio->ptr)->ssl != NULL)
|
||||
SSL_free(((BIO_SSL *)dbio->ptr)->ssl);
|
||||
((BIO_SSL *)dbio->ptr)->ssl = SSL_dup(ssl);
|
||||
((BIO_SSL *)dbio->ptr)->renegotiate_count =
|
||||
((BIO_SSL *)b->ptr)->renegotiate_count;
|
||||
((BIO_SSL *)dbio->ptr)->byte_count =
|
||||
((BIO_SSL *)b->ptr)->byte_count;
|
||||
((BIO_SSL *)dbio->ptr)->renegotiate_timeout =
|
||||
((BIO_SSL *)b->ptr)->renegotiate_timeout;
|
||||
((BIO_SSL *)dbio->ptr)->last_time =
|
||||
((BIO_SSL *)b->ptr)->last_time;
|
||||
ret = (((BIO_SSL *)dbio->ptr)->ssl != NULL);
|
||||
break;
|
||||
case BIO_C_GET_FD:
|
||||
ret = BIO_ctrl(ssl->rbio, cmd, num, ptr);
|
||||
break;
|
||||
case BIO_CTRL_SET_CALLBACK:
|
||||
{
|
||||
ret = 0;
|
||||
}
|
||||
break;
|
||||
case BIO_CTRL_GET_CALLBACK:
|
||||
{
|
||||
void (**fptr)(const SSL *xssl, int type, int val);
|
||||
|
||||
fptr = (void (**)(const SSL *xssl, int type, int val))
|
||||
ptr;
|
||||
*fptr = SSL_get_info_callback(ssl);
|
||||
}
|
||||
break;
|
||||
default:
|
||||
ret = BIO_ctrl(ssl->rbio, cmd, num, ptr);
|
||||
break;
|
||||
}
|
||||
return (ret);
|
||||
}
|
||||
|
||||
static long
|
||||
ssl_callback_ctrl(BIO *b, int cmd, bio_info_cb *fp)
|
||||
{
|
||||
SSL *ssl;
|
||||
BIO_SSL *bs;
|
||||
long ret = 1;
|
||||
|
||||
bs = (BIO_SSL *)b->ptr;
|
||||
ssl = bs->ssl;
|
||||
switch (cmd) {
|
||||
case BIO_CTRL_SET_CALLBACK:
|
||||
{
|
||||
/* FIXME: setting this via a completely different prototype
|
||||
seems like a crap idea */
|
||||
SSL_set_info_callback(ssl,
|
||||
(void (*)(const SSL *, int, int))fp);
|
||||
}
|
||||
break;
|
||||
default:
|
||||
ret = BIO_callback_ctrl(ssl->rbio, cmd, fp);
|
||||
break;
|
||||
}
|
||||
return (ret);
|
||||
}
|
||||
|
||||
static int
|
||||
ssl_puts(BIO *bp, const char *str)
|
||||
{
|
||||
int n, ret;
|
||||
|
||||
n = strlen(str);
|
||||
ret = BIO_write(bp, str, n);
|
||||
return (ret);
|
||||
}
|
||||
|
||||
BIO *
|
||||
BIO_new_buffer_ssl_connect(SSL_CTX *ctx)
|
||||
{
|
||||
BIO *ret = NULL, *buf = NULL, *ssl = NULL;
|
||||
|
||||
if ((buf = BIO_new(BIO_f_buffer())) == NULL)
|
||||
goto err;
|
||||
if ((ssl = BIO_new_ssl_connect(ctx)) == NULL)
|
||||
goto err;
|
||||
if ((ret = BIO_push(buf, ssl)) == NULL)
|
||||
goto err;
|
||||
return (ret);
|
||||
|
||||
err:
|
||||
BIO_free(buf);
|
||||
BIO_free(ssl);
|
||||
return (NULL);
|
||||
}
|
||||
|
||||
BIO *
|
||||
BIO_new_ssl_connect(SSL_CTX *ctx)
|
||||
{
|
||||
BIO *ret = NULL, *con = NULL, *ssl = NULL;
|
||||
|
||||
if ((con = BIO_new(BIO_s_connect())) == NULL)
|
||||
goto err;
|
||||
if ((ssl = BIO_new_ssl(ctx, 1)) == NULL)
|
||||
goto err;
|
||||
if ((ret = BIO_push(ssl, con)) == NULL)
|
||||
goto err;
|
||||
return (ret);
|
||||
|
||||
err:
|
||||
BIO_free(con);
|
||||
BIO_free(ssl);
|
||||
return (NULL);
|
||||
}
|
||||
|
||||
BIO *
|
||||
BIO_new_ssl(SSL_CTX *ctx, int client)
|
||||
{
|
||||
BIO *ret;
|
||||
SSL *ssl;
|
||||
|
||||
if ((ret = BIO_new(BIO_f_ssl())) == NULL)
|
||||
goto err;
|
||||
if ((ssl = SSL_new(ctx)) == NULL)
|
||||
goto err;
|
||||
|
||||
if (client)
|
||||
SSL_set_connect_state(ssl);
|
||||
else
|
||||
SSL_set_accept_state(ssl);
|
||||
|
||||
BIO_set_ssl(ret, ssl, BIO_CLOSE);
|
||||
return (ret);
|
||||
|
||||
err:
|
||||
BIO_free(ret);
|
||||
return (NULL);
|
||||
}
|
||||
|
||||
int
|
||||
BIO_ssl_copy_session_id(BIO *t, BIO *f)
|
||||
{
|
||||
t = BIO_find_type(t, BIO_TYPE_SSL);
|
||||
f = BIO_find_type(f, BIO_TYPE_SSL);
|
||||
if ((t == NULL) || (f == NULL))
|
||||
return (0);
|
||||
if ((((BIO_SSL *)t->ptr)->ssl == NULL) ||
|
||||
(((BIO_SSL *)f->ptr)->ssl == NULL))
|
||||
return (0);
|
||||
if (!SSL_copy_session_id(((BIO_SSL *)t->ptr)->ssl,
|
||||
((BIO_SSL *)f->ptr)->ssl))
|
||||
return (0);
|
||||
return (1);
|
||||
}
|
||||
|
||||
void
|
||||
BIO_ssl_shutdown(BIO *b)
|
||||
{
|
||||
SSL *s;
|
||||
|
||||
while (b != NULL) {
|
||||
if (b->method->type == BIO_TYPE_SSL) {
|
||||
s = ((BIO_SSL *)b->ptr)->ssl;
|
||||
SSL_shutdown(s);
|
||||
break;
|
||||
}
|
||||
b = b->next_bio;
|
||||
}
|
||||
}
|
||||
Reference in New Issue
Block a user