-/* crypto/bio/bf_nbio.c */
-/* Copyright (C) 1995-1997 Eric Young (eay@cryptsoft.com)
- * All rights reserved.
+/*
+ * Copyright 1995-2021 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 Apache License 2.0 (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 "cryptlib.h"
-#include "rand.h"
-#include "bio.h"
-#include "evp.h"
+#include "bio_local.h"
+#include "internal/cryptlib.h"
+#include <openssl/rand.h>
-/* BIO_put and BIO_get both add to the digest,
- * BIO_gets returns the digest */
+/*
+ * BIO_put and BIO_get both add to the digest, BIO_gets returns the digest
+ */
-#ifndef NOPROTO
-static int nbiof_write(BIO *h,char *buf,int num);
-static int nbiof_read(BIO *h,char *buf,int size);
-static int nbiof_puts(BIO *h,char *str);
-static int nbiof_gets(BIO *h,char *str,int size);
-static long nbiof_ctrl(BIO *h,int cmd,long arg1,char *arg2);
+static int nbiof_write(BIO *h, const char *buf, int num);
+static int nbiof_read(BIO *h, char *buf, int size);
+static int nbiof_puts(BIO *h, const char *str);
+static int nbiof_gets(BIO *h, char *str, int size);
+static long nbiof_ctrl(BIO *h, int cmd, long arg1, void *arg2);
static int nbiof_new(BIO *h);
static int nbiof_free(BIO *data);
-#else
-static int nbiof_write();
-static int nbiof_read();
-static int nbiof_puts();
-static int nbiof_gets();
-static long nbiof_ctrl();
-static int nbiof_new();
-static int nbiof_free();
-#endif
-
-typedef struct nbio_test_st
- {
- /* only set if we sent a 'should retry' error */
- int lrn;
- int lwn;
- } NBIO_TEST;
-
-static BIO_METHOD methods_nbiof=
- {
- BIO_TYPE_NBIO_TEST,"non-blocking IO test filter",
- nbiof_write,
- nbiof_read,
- nbiof_puts,
- nbiof_gets,
- nbiof_ctrl,
- nbiof_new,
- nbiof_free,
- };
-
-BIO_METHOD *BIO_f_nbio_test()
- {
- return(&methods_nbiof);
- }
-
-static int nbiof_new(bi)
-BIO *bi;
- {
- NBIO_TEST *nt;
-
- nt=(NBIO_TEST *)Malloc(sizeof(NBIO_TEST));
- nt->lrn= -1;
- nt->lwn= -1;
- bi->ptr=(char *)nt;
- bi->init=1;
- bi->flags=0;
- return(1);
- }
-
-static int nbiof_free(a)
-BIO *a;
- {
- if (a == NULL) return(0);
- if (a->ptr != NULL)
- Free(a->ptr);
- a->ptr=NULL;
- a->init=0;
- a->flags=0;
- return(1);
- }
-
-static int nbiof_read(b,out,outl)
-BIO *b;
-char *out;
-int outl;
- {
- NBIO_TEST *nt;
- int ret=0;
-#if 0
- int num;
- unsigned char n;
-#endif
-
- if (out == NULL) return(0);
- if (b->next_bio == NULL) return(0);
- nt=(NBIO_TEST *)b->ptr;
-
- BIO_clear_retry_flags(b);
-#if 0
- RAND_bytes(&n,1);
- num=(n&0x07);
-
- if (outl > num) outl=num;
-
- if (num == 0)
- {
- ret= -1;
- BIO_set_retry_read(b);
- }
- else
-#endif
- {
- ret=BIO_read(b->next_bio,out,outl);
- if (ret < 0)
- BIO_copy_next_retry(b);
- }
- return(ret);
- }
-
-static int nbiof_write(b,in,inl)
-BIO *b;
-char *in;
-int inl;
- {
- NBIO_TEST *nt;
- int ret=0;
- int num;
- unsigned char n;
-
- if ((in == NULL) || (inl <= 0)) return(0);
- if (b->next_bio == NULL) return(0);
- nt=(NBIO_TEST *)b->ptr;
-
- BIO_clear_retry_flags(b);
-
-#if 1
- if (nt->lwn > 0)
- {
- num=nt->lwn;
- nt->lwn=0;
- }
- else
- {
- RAND_bytes(&n,1);
- num=(n&7);
- }
-
- if (inl > num) inl=num;
-
- if (num == 0)
- {
- ret= -1;
- BIO_set_retry_write(b);
- }
- else
-#endif
- {
- ret=BIO_write(b->next_bio,in,inl);
- if (ret < 0)
- {
- BIO_copy_next_retry(b);
- nt->lwn=inl;
- }
- }
- return(ret);
- }
-
-static long nbiof_ctrl(b,cmd,num,ptr)
-BIO *b;
-int cmd;
-long num;
-char *ptr;
- {
- long ret;
-
- if (b->next_bio == NULL) return(0);
- switch (cmd)
- {
- case BIO_C_DO_STATE_MACHINE:
- BIO_clear_retry_flags(b);
- ret=BIO_ctrl(b->next_bio,cmd,num,ptr);
- BIO_copy_next_retry(b);
- break;
- case BIO_CTRL_DUP:
- break;
- default:
- ret=BIO_ctrl(b->next_bio,cmd,num,ptr);
- break;
- }
- return(ret);
- }
-
-static int nbiof_gets(bp,buf,size)
-BIO *bp;
-char *buf;
-int size;
- {
- if (bp->next_bio == NULL) return(0);
- return(BIO_gets(bp->next_bio,buf,size));
- }
-
-
-static int nbiof_puts(bp,str)
-BIO *bp;
-char *str;
- {
- if (bp->next_bio == NULL) return(0);
- return(BIO_puts(bp->next_bio,str));
- }
-
-
+static long nbiof_callback_ctrl(BIO *h, int cmd, BIO_info_cb *fp);
+typedef struct nbio_test_st {
+ /* only set if we sent a 'should retry' error */
+ int lrn;
+ int lwn;
+} NBIO_TEST;
+
+static const BIO_METHOD methods_nbiof = {
+ BIO_TYPE_NBIO_TEST,
+ "non-blocking IO test filter",
+ bwrite_conv,
+ nbiof_write,
+ bread_conv,
+ nbiof_read,
+ nbiof_puts,
+ nbiof_gets,
+ nbiof_ctrl,
+ nbiof_new,
+ nbiof_free,
+ nbiof_callback_ctrl,
+};
+
+const BIO_METHOD *BIO_f_nbio_test(void)
+{
+ return &methods_nbiof;
+}
+
+static int nbiof_new(BIO *bi)
+{
+ NBIO_TEST *nt;
+
+ if ((nt = OPENSSL_zalloc(sizeof(*nt))) == NULL)
+ return 0;
+ nt->lrn = -1;
+ nt->lwn = -1;
+ bi->ptr = (char *)nt;
+ bi->init = 1;
+ return 1;
+}
+
+static int nbiof_free(BIO *a)
+{
+ if (a == NULL)
+ return 0;
+ OPENSSL_free(a->ptr);
+ a->ptr = NULL;
+ a->init = 0;
+ a->flags = 0;
+ return 1;
+}
+
+static int nbiof_read(BIO *b, char *out, int outl)
+{
+ int ret = 0;
+ int num;
+ unsigned char n;
+
+ if (out == NULL)
+ return 0;
+ if (b->next_bio == NULL)
+ return 0;
+
+ BIO_clear_retry_flags(b);
+ if (RAND_priv_bytes(&n, 1) <= 0)
+ return -1;
+ num = (n & 0x07);
+
+ if (outl > num)
+ outl = num;
+
+ if (num == 0) {
+ ret = -1;
+ BIO_set_retry_read(b);
+ } else {
+ ret = BIO_read(b->next_bio, out, outl);
+ if (ret < 0)
+ BIO_copy_next_retry(b);
+ }
+ return ret;
+}
+
+static int nbiof_write(BIO *b, const char *in, int inl)
+{
+ NBIO_TEST *nt;
+ int ret = 0;
+ int num;
+ unsigned char n;
+
+ if ((in == NULL) || (inl <= 0))
+ return 0;
+ if (b->next_bio == NULL)
+ return 0;
+ nt = (NBIO_TEST *)b->ptr;
+
+ BIO_clear_retry_flags(b);
+
+ if (nt->lwn > 0) {
+ num = nt->lwn;
+ nt->lwn = 0;
+ } else {
+ if (RAND_priv_bytes(&n, 1) <= 0)
+ return -1;
+ num = (n & 7);
+ }
+
+ if (inl > num)
+ inl = num;
+
+ if (num == 0) {
+ ret = -1;
+ BIO_set_retry_write(b);
+ } else {
+ ret = BIO_write(b->next_bio, in, inl);
+ if (ret < 0) {
+ BIO_copy_next_retry(b);
+ nt->lwn = inl;
+ }
+ }
+ return ret;
+}
+
+static long nbiof_ctrl(BIO *b, int cmd, long num, void *ptr)
+{
+ long ret;
+
+ if (b->next_bio == NULL)
+ return 0;
+ switch (cmd) {
+ case BIO_C_DO_STATE_MACHINE:
+ BIO_clear_retry_flags(b);
+ ret = BIO_ctrl(b->next_bio, cmd, num, ptr);
+ BIO_copy_next_retry(b);
+ break;
+ case BIO_CTRL_DUP:
+ ret = 0L;
+ break;
+ default:
+ ret = BIO_ctrl(b->next_bio, cmd, num, ptr);
+ break;
+ }
+ return ret;
+}
+
+static long nbiof_callback_ctrl(BIO *b, int cmd, BIO_info_cb *fp)
+{
+ if (b->next_bio == NULL)
+ return 0;
+ return BIO_callback_ctrl(b->next_bio, cmd, fp);
+}
+
+static int nbiof_gets(BIO *bp, char *buf, int size)
+{
+ if (bp->next_bio == NULL)
+ return 0;
+ return BIO_gets(bp->next_bio, buf, size);
+}
+
+static int nbiof_puts(BIO *bp, const char *str)
+{
+ if (bp->next_bio == NULL)
+ return 0;
+ return BIO_puts(bp->next_bio, str);
+}
projects / openssl.git / blobdiff