268 lines
6.4 KiB
C
Executable File
268 lines
6.4 KiB
C
Executable File
/* $OpenBSD: bss_fd.c,v 1.19 2018/05/01 13:29:09 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>
|
|
#include <stdio.h>
|
|
#include <string.h>
|
|
#include <unistd.h>
|
|
|
|
#include <openssl/opensslconf.h>
|
|
|
|
#include <openssl/bio.h>
|
|
|
|
static int fd_write(BIO *h, const char *buf, int num);
|
|
static int fd_read(BIO *h, char *buf, int size);
|
|
static int fd_puts(BIO *h, const char *str);
|
|
static int fd_gets(BIO *h, char *buf, int size);
|
|
static long fd_ctrl(BIO *h, int cmd, long arg1, void *arg2);
|
|
static int fd_new(BIO *h);
|
|
static int fd_free(BIO *data);
|
|
int BIO_fd_should_retry(int s);
|
|
|
|
static const BIO_METHOD methods_fdp = {
|
|
.type = BIO_TYPE_FD,
|
|
.name = "file descriptor",
|
|
.bwrite = fd_write,
|
|
.bread = fd_read,
|
|
.bputs = fd_puts,
|
|
.bgets = fd_gets,
|
|
.ctrl = fd_ctrl,
|
|
.create = fd_new,
|
|
.destroy = fd_free
|
|
};
|
|
|
|
const BIO_METHOD *
|
|
BIO_s_fd(void)
|
|
{
|
|
return (&methods_fdp);
|
|
}
|
|
|
|
BIO *
|
|
BIO_new_fd(int fd, int close_flag)
|
|
{
|
|
BIO *ret;
|
|
ret = BIO_new(BIO_s_fd());
|
|
if (ret == NULL)
|
|
return (NULL);
|
|
BIO_set_fd(ret, fd, close_flag);
|
|
return (ret);
|
|
}
|
|
|
|
static int
|
|
fd_new(BIO *bi)
|
|
{
|
|
bi->init = 0;
|
|
bi->num = -1;
|
|
bi->ptr = NULL;
|
|
bi->flags=0;
|
|
return (1);
|
|
}
|
|
|
|
static int
|
|
fd_free(BIO *a)
|
|
{
|
|
if (a == NULL)
|
|
return (0);
|
|
if (a->shutdown) {
|
|
if (a->init) {
|
|
close(a->num);
|
|
}
|
|
a->init = 0;
|
|
a->flags = 0;
|
|
}
|
|
return (1);
|
|
}
|
|
|
|
static int
|
|
fd_read(BIO *b, char *out, int outl)
|
|
{
|
|
int ret = 0;
|
|
|
|
if (out != NULL) {
|
|
errno = 0;
|
|
ret = read(b->num, out, outl);
|
|
BIO_clear_retry_flags(b);
|
|
if (ret <= 0) {
|
|
if (BIO_fd_should_retry(ret))
|
|
BIO_set_retry_read(b);
|
|
}
|
|
}
|
|
return (ret);
|
|
}
|
|
|
|
static int
|
|
fd_write(BIO *b, const char *in, int inl)
|
|
{
|
|
int ret;
|
|
errno = 0;
|
|
ret = write(b->num, in, inl);
|
|
BIO_clear_retry_flags(b);
|
|
if (ret <= 0) {
|
|
if (BIO_fd_should_retry(ret))
|
|
BIO_set_retry_write(b);
|
|
}
|
|
return (ret);
|
|
}
|
|
|
|
static long
|
|
fd_ctrl(BIO *b, int cmd, long num, void *ptr)
|
|
{
|
|
long ret = 1;
|
|
int *ip;
|
|
|
|
switch (cmd) {
|
|
case BIO_CTRL_RESET:
|
|
num = 0;
|
|
case BIO_C_FILE_SEEK:
|
|
ret = (long)lseek(b->num, num, 0);
|
|
break;
|
|
case BIO_C_FILE_TELL:
|
|
case BIO_CTRL_INFO:
|
|
ret = (long)lseek(b->num, 0, 1);
|
|
break;
|
|
case BIO_C_SET_FD:
|
|
fd_free(b);
|
|
b->num= *((int *)ptr);
|
|
b->shutdown = (int)num;
|
|
b->init = 1;
|
|
break;
|
|
case BIO_C_GET_FD:
|
|
if (b->init) {
|
|
ip = (int *)ptr;
|
|
if (ip != NULL)
|
|
*ip = b->num;
|
|
ret = b->num;
|
|
} else
|
|
ret = -1;
|
|
break;
|
|
case BIO_CTRL_GET_CLOSE:
|
|
ret = b->shutdown;
|
|
break;
|
|
case BIO_CTRL_SET_CLOSE:
|
|
b->shutdown = (int)num;
|
|
break;
|
|
case BIO_CTRL_PENDING:
|
|
case BIO_CTRL_WPENDING:
|
|
ret = 0;
|
|
break;
|
|
case BIO_CTRL_DUP:
|
|
case BIO_CTRL_FLUSH:
|
|
ret = 1;
|
|
break;
|
|
default:
|
|
ret = 0;
|
|
break;
|
|
}
|
|
return (ret);
|
|
}
|
|
|
|
static int
|
|
fd_puts(BIO *bp, const char *str)
|
|
{
|
|
int n, ret;
|
|
|
|
n = strlen(str);
|
|
ret = fd_write(bp, str, n);
|
|
return (ret);
|
|
}
|
|
|
|
static int
|
|
fd_gets(BIO *bp, char *buf, int size)
|
|
{
|
|
int ret = 0;
|
|
char *ptr = buf;
|
|
char *end = buf + size - 1;
|
|
|
|
while ((ptr < end) && (fd_read(bp, ptr, 1) > 0) && (ptr[0] != '\n'))
|
|
ptr++;
|
|
|
|
ptr[0] = '\0';
|
|
|
|
if (buf[0] != '\0')
|
|
ret = strlen(buf);
|
|
return (ret);
|
|
}
|
|
|
|
int
|
|
BIO_fd_should_retry(int i)
|
|
{
|
|
int err;
|
|
|
|
if ((i == 0) || (i == -1)) {
|
|
err = errno;
|
|
return (BIO_fd_non_fatal_error(err));
|
|
}
|
|
return (0);
|
|
}
|
|
|
|
int
|
|
BIO_fd_non_fatal_error(int err)
|
|
{
|
|
switch (err) {
|
|
case ENOTCONN:
|
|
case EINTR:
|
|
case EAGAIN:
|
|
case EINPROGRESS:
|
|
case EALREADY:
|
|
return (1);
|
|
default:
|
|
break;
|
|
}
|
|
return (0);
|
|
}
|