-/* crypto/evp/bio_ok.c */
-/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
- * All rights reserved.
+/*
+ * Copyright 1995-2016 The OpenSSL Project Authors. 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.]
+ * Licensed under the OpenSSL license (the "License"). You may not use
+ * this file except in compliance with the License. You can obtain a copy
+ * in the file LICENSE in the source distribution or at
+ * https://www.openssl.org/source/license.html
*/
/*-
#include <stdio.h>
#include <errno.h>
#include <assert.h>
-#include "cryptlib.h"
+#include "internal/cryptlib.h"
#include <openssl/buffer.h>
-#include <openssl/bio.h>
+#include "internal/bio.h"
#include <openssl/evp.h>
#include <openssl/rand.h>
+#include "internal/evp_int.h"
static int ok_write(BIO *h, const char *buf, int num);
static int ok_read(BIO *h, char *buf, int size);
size_t buf_off_save;
int cont; /* <= 0 when finished */
int finished;
- EVP_MD_CTX md;
+ EVP_MD_CTX *md;
int blockout; /* output block is ready */
int sigio; /* must process signature */
unsigned char buf[IOBS];
} BIO_OK_CTX;
-static BIO_METHOD methods_ok = {
+static const BIO_METHOD methods_ok = {
BIO_TYPE_CIPHER, "reliable",
ok_write,
ok_read,
ok_callback_ctrl,
};
-BIO_METHOD *BIO_f_reliable(void)
+const BIO_METHOD *BIO_f_reliable(void)
{
return (&methods_ok);
}
{
BIO_OK_CTX *ctx;
- ctx = (BIO_OK_CTX *)OPENSSL_malloc(sizeof(BIO_OK_CTX));
+ ctx = OPENSSL_zalloc(sizeof(*ctx));
if (ctx == NULL)
- return (0);
+ return 0;
- ctx->buf_len = 0;
- ctx->buf_off = 0;
- ctx->buf_len_save = 0;
- ctx->buf_off_save = 0;
ctx->cont = 1;
- ctx->finished = 0;
- ctx->blockout = 0;
ctx->sigio = 1;
+ ctx->md = EVP_MD_CTX_new();
+ if (ctx->md == NULL) {
+ OPENSSL_free(ctx);
+ return 0;
+ }
+ BIO_set_init(bi, 0);
+ BIO_set_data(bi, ctx);
- EVP_MD_CTX_init(&ctx->md);
-
- bi->init = 0;
- bi->ptr = (char *)ctx;
- bi->flags = 0;
- return (1);
+ return 1;
}
static int ok_free(BIO *a)
{
+ BIO_OK_CTX *ctx;
+
if (a == NULL)
- return (0);
- EVP_MD_CTX_cleanup(&((BIO_OK_CTX *)a->ptr)->md);
- OPENSSL_cleanse(a->ptr, sizeof(BIO_OK_CTX));
- OPENSSL_free(a->ptr);
- a->ptr = NULL;
- a->init = 0;
- a->flags = 0;
- return (1);
+ return 0;
+
+ ctx = BIO_get_data(a);
+
+ EVP_MD_CTX_free(ctx->md);
+ OPENSSL_clear_free(ctx, sizeof(BIO_OK_CTX));
+ BIO_set_data(a, NULL);
+ BIO_set_init(a, 0);
+
+ return 1;
}
static int ok_read(BIO *b, char *out, int outl)
{
int ret = 0, i, n;
BIO_OK_CTX *ctx;
+ BIO *next;
if (out == NULL)
- return (0);
- ctx = (BIO_OK_CTX *)b->ptr;
+ return 0;
- if ((ctx == NULL) || (b->next_bio == NULL) || (b->init == 0))
- return (0);
+ ctx = BIO_get_data(b);
+ next = BIO_next(b);
+
+ if ((ctx == NULL) || (next == NULL) || (BIO_get_init(b) == 0))
+ return 0;
while (outl > 0) {
/* no clean bytes in buffer -- fill it */
n = IOBS - ctx->buf_len;
- i = BIO_read(b->next_bio, &(ctx->buf[ctx->buf_len]), n);
+ i = BIO_read(next, &(ctx->buf[ctx->buf_len]), n);
if (i <= 0)
break; /* nothing new */
BIO_clear_retry_flags(b);
BIO_copy_next_retry(b);
- return (ret);
+ return ret;
}
static int ok_write(BIO *b, const char *in, int inl)
{
int ret = 0, n, i;
BIO_OK_CTX *ctx;
+ BIO *next;
if (inl <= 0)
return inl;
- ctx = (BIO_OK_CTX *)b->ptr;
+ ctx = BIO_get_data(b);
+ next = BIO_next(b);
ret = inl;
- if ((ctx == NULL) || (b->next_bio == NULL) || (b->init == 0))
+ if ((ctx == NULL) || (next == NULL) || (BIO_get_init(b) == 0))
return (0);
if (ctx->sigio && !sig_out(b))
BIO_clear_retry_flags(b);
n = ctx->buf_len - ctx->buf_off;
while (ctx->blockout && n > 0) {
- i = BIO_write(b->next_bio, &(ctx->buf[ctx->buf_off]), n);
+ i = BIO_write(next, &(ctx->buf[ctx->buf_off]), n);
if (i <= 0) {
BIO_copy_next_retry(b);
if (!BIO_should_retry(b))
n = (inl + ctx->buf_len > OK_BLOCK_SIZE + OK_BLOCK_BLOCK) ?
(int)(OK_BLOCK_SIZE + OK_BLOCK_BLOCK - ctx->buf_len) : inl;
- memcpy((unsigned char *)(&(ctx->buf[ctx->buf_len])),
- (unsigned char *)in, n);
+ memcpy(&ctx->buf[ctx->buf_len], in, n);
ctx->buf_len += n;
inl -= n;
in += n;
const EVP_MD **ppmd;
long ret = 1;
int i;
+ BIO *next;
- ctx = b->ptr;
+ ctx = BIO_get_data(b);
+ next = BIO_next(b);
switch (cmd) {
case BIO_CTRL_RESET:
ctx->finished = 0;
ctx->blockout = 0;
ctx->sigio = 1;
- ret = BIO_ctrl(b->next_bio, cmd, num, ptr);
+ ret = BIO_ctrl(next, cmd, num, ptr);
break;
case BIO_CTRL_EOF: /* More to read */
if (ctx->cont <= 0)
ret = 1;
else
- ret = BIO_ctrl(b->next_bio, cmd, num, ptr);
+ ret = BIO_ctrl(next, cmd, num, ptr);
break;
case BIO_CTRL_PENDING: /* More to read in buffer */
case BIO_CTRL_WPENDING: /* More to read in buffer */
ret = ctx->blockout ? ctx->buf_len - ctx->buf_off : 0;
if (ret <= 0)
- ret = BIO_ctrl(b->next_bio, cmd, num, ptr);
+ ret = BIO_ctrl(next, cmd, num, ptr);
break;
case BIO_CTRL_FLUSH:
/* do a final write */
ctx->cont = (int)ret;
/* Finally flush the underlying BIO */
- ret = BIO_ctrl(b->next_bio, cmd, num, ptr);
+ ret = BIO_ctrl(next, cmd, num, ptr);
break;
case BIO_C_DO_STATE_MACHINE:
BIO_clear_retry_flags(b);
- ret = BIO_ctrl(b->next_bio, cmd, num, ptr);
+ ret = BIO_ctrl(next, cmd, num, ptr);
BIO_copy_next_retry(b);
break;
case BIO_CTRL_INFO:
break;
case BIO_C_SET_MD:
md = ptr;
- if (!EVP_DigestInit_ex(&ctx->md, md, NULL))
+ if (!EVP_DigestInit_ex(ctx->md, md, NULL))
return 0;
- b->init = 1;
+ BIO_set_init(b, 1);
break;
case BIO_C_GET_MD:
- if (b->init) {
+ if (BIO_get_init(b)) {
ppmd = ptr;
- *ppmd = ctx->md.digest;
+ *ppmd = EVP_MD_CTX_md(ctx->md);
} else
ret = 0;
break;
default:
- ret = BIO_ctrl(b->next_bio, cmd, num, ptr);
+ ret = BIO_ctrl(next, cmd, num, ptr);
break;
}
- return (ret);
+ return ret;
}
static long ok_callback_ctrl(BIO *b, int cmd, bio_info_cb *fp)
{
long ret = 1;
+ BIO *next;
+
+ next = BIO_next(b);
+
+ if (next == NULL)
+ return 0;
- if (b->next_bio == NULL)
- return (0);
switch (cmd) {
default:
- ret = BIO_callback_ctrl(b->next_bio, cmd, fp);
+ ret = BIO_callback_ctrl(next, cmd, fp);
break;
}
- return (ret);
+
+ return ret;
}
static void longswap(void *_ptr, size_t len)
{
BIO_OK_CTX *ctx;
EVP_MD_CTX *md;
+ const EVP_MD *digest;
+ int md_size;
+ void *md_data;
- ctx = b->ptr;
- md = &ctx->md;
+ ctx = BIO_get_data(b);
+ md = ctx->md;
+ digest = EVP_MD_CTX_md(md);
+ md_size = EVP_MD_size(digest);
+ md_data = EVP_MD_CTX_md_data(md);
- if (ctx->buf_len + 2 * md->digest->md_size > OK_BLOCK_SIZE)
+ if (ctx->buf_len + 2 * md_size > OK_BLOCK_SIZE)
return 1;
- if (!EVP_DigestInit_ex(md, md->digest, NULL))
+ if (!EVP_DigestInit_ex(md, digest, NULL))
goto berr;
/*
* FIXME: there's absolutely no guarantee this makes any sense at all,
* particularly now EVP_MD_CTX has been restructured.
*/
- if (RAND_bytes(md->md_data, md->digest->md_size) <= 0)
+ if (RAND_bytes(md_data, md_size) <= 0)
goto berr;
- memcpy(&(ctx->buf[ctx->buf_len]), md->md_data, md->digest->md_size);
- longswap(&(ctx->buf[ctx->buf_len]), md->digest->md_size);
- ctx->buf_len += md->digest->md_size;
+ memcpy(&(ctx->buf[ctx->buf_len]), md_data, md_size);
+ longswap(&(ctx->buf[ctx->buf_len]), md_size);
+ ctx->buf_len += md_size;
if (!EVP_DigestUpdate(md, WELLKNOWN, strlen(WELLKNOWN)))
goto berr;
if (!EVP_DigestFinal_ex(md, &(ctx->buf[ctx->buf_len]), NULL))
goto berr;
- ctx->buf_len += md->digest->md_size;
+ ctx->buf_len += md_size;
ctx->blockout = 1;
ctx->sigio = 0;
return 1;
EVP_MD_CTX *md;
unsigned char tmp[EVP_MAX_MD_SIZE];
int ret = 0;
+ const EVP_MD *digest;
+ int md_size;
+ void *md_data;
- ctx = b->ptr;
- md = &ctx->md;
+ ctx = BIO_get_data(b);
+ md = ctx->md;
+ digest = EVP_MD_CTX_md(md);
+ md_size = EVP_MD_size(digest);
+ md_data = EVP_MD_CTX_md_data(md);
- if ((int)(ctx->buf_len - ctx->buf_off) < 2 * md->digest->md_size)
+ if ((int)(ctx->buf_len - ctx->buf_off) < 2 * md_size)
return 1;
- if (!EVP_DigestInit_ex(md, md->digest, NULL))
+ if (!EVP_DigestInit_ex(md, digest, NULL))
goto berr;
- memcpy(md->md_data, &(ctx->buf[ctx->buf_off]), md->digest->md_size);
- longswap(md->md_data, md->digest->md_size);
- ctx->buf_off += md->digest->md_size;
+ memcpy(md_data, &(ctx->buf[ctx->buf_off]), md_size);
+ longswap(md_data, md_size);
+ ctx->buf_off += md_size;
if (!EVP_DigestUpdate(md, WELLKNOWN, strlen(WELLKNOWN)))
goto berr;
if (!EVP_DigestFinal_ex(md, tmp, NULL))
goto berr;
- ret = memcmp(&(ctx->buf[ctx->buf_off]), tmp, md->digest->md_size) == 0;
- ctx->buf_off += md->digest->md_size;
+ ret = memcmp(&(ctx->buf[ctx->buf_off]), tmp, md_size) == 0;
+ ctx->buf_off += md_size;
if (ret == 1) {
ctx->sigio = 0;
if (ctx->buf_len != ctx->buf_off) {
BIO_OK_CTX *ctx;
EVP_MD_CTX *md;
unsigned long tl;
+ const EVP_MD *digest;
+ int md_size;
- ctx = b->ptr;
- md = &ctx->md;
+ ctx = BIO_get_data(b);
+ md = ctx->md;
+ digest = EVP_MD_CTX_md(md);
+ md_size = EVP_MD_size(digest);
tl = ctx->buf_len - OK_BLOCK_BLOCK;
ctx->buf[0] = (unsigned char)(tl >> 24);
goto berr;
if (!EVP_DigestFinal_ex(md, &(ctx->buf[ctx->buf_len]), NULL))
goto berr;
- ctx->buf_len += md->digest->md_size;
+ ctx->buf_len += md_size;
ctx->blockout = 1;
return 1;
berr:
EVP_MD_CTX *md;
unsigned long tl = 0;
unsigned char tmp[EVP_MAX_MD_SIZE];
+ int md_size;
- ctx = b->ptr;
- md = &ctx->md;
+ ctx = BIO_get_data(b);
+ md = ctx->md;
+ md_size = EVP_MD_size(EVP_MD_CTX_md(md));
assert(sizeof(tl) >= OK_BLOCK_BLOCK); /* always true */
tl = ctx->buf[0];
tl <<= 8;
tl |= ctx->buf[3];
- if (ctx->buf_len < tl + OK_BLOCK_BLOCK + md->digest->md_size)
+ if (ctx->buf_len < tl + OK_BLOCK_BLOCK + md_size)
return 1;
if (!EVP_DigestUpdate(md,
goto berr;
if (!EVP_DigestFinal_ex(md, tmp, NULL))
goto berr;
- if (memcmp(&(ctx->buf[tl + OK_BLOCK_BLOCK]), tmp, md->digest->md_size) ==
- 0) {
+ if (memcmp(&(ctx->buf[tl + OK_BLOCK_BLOCK]), tmp, md_size) == 0) {
/* there might be parts from next block lurking around ! */
- ctx->buf_off_save = tl + OK_BLOCK_BLOCK + md->digest->md_size;
+ ctx->buf_off_save = tl + OK_BLOCK_BLOCK + md_size;
ctx->buf_len_save = ctx->buf_len;
ctx->buf_off = OK_BLOCK_BLOCK;
ctx->buf_len = tl + OK_BLOCK_BLOCK;
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