bc36ee6227
missed any. This compiles and runs on Linux, and external applications have no problems with it. The definite test will be to build this on VMS.
282 lines
6.4 KiB
C
282 lines
6.4 KiB
C
/* crypto/bio/bss_fd.c */
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/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
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* All rights reserved.
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*
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* This package is an SSL implementation written
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* by Eric Young (eay@cryptsoft.com).
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* The implementation was written so as to conform with Netscapes SSL.
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*
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* This library is free for commercial and non-commercial use as long as
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* the following conditions are aheared to. The following conditions
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* apply to all code found in this distribution, be it the RC4, RSA,
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* lhash, DES, etc., code; not just the SSL code. The SSL documentation
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* included with this distribution is covered by the same copyright terms
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* except that the holder is Tim Hudson (tjh@cryptsoft.com).
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*
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* Copyright remains Eric Young's, and as such any Copyright notices in
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* the code are not to be removed.
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* If this package is used in a product, Eric Young should be given attribution
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* as the author of the parts of the library used.
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* This can be in the form of a textual message at program startup or
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* in documentation (online or textual) provided with the package.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* "This product includes cryptographic software written by
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* Eric Young (eay@cryptsoft.com)"
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* The word 'cryptographic' can be left out if the rouines from the library
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* being used are not cryptographic related :-).
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* 4. If you include any Windows specific code (or a derivative thereof) from
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* the apps directory (application code) you must include an acknowledgement:
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* "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
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*
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* THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* The licence and distribution terms for any publically available version or
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* derivative of this code cannot be changed. i.e. this code cannot simply be
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* copied and put under another distribution licence
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* [including the GNU Public Licence.]
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*/
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#include <stdio.h>
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#include <errno.h>
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#define USE_SOCKETS
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#include "cryptlib.h"
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#include <openssl/bio.h>
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static int fd_write(BIO *h, const char *buf, int num);
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static int fd_read(BIO *h, char *buf, int size);
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static int fd_puts(BIO *h, const char *str);
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static long fd_ctrl(BIO *h, int cmd, long arg1, void *arg2);
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static int fd_new(BIO *h);
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static int fd_free(BIO *data);
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int BIO_fd_should_retry(int s);
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static BIO_METHOD methods_fdp=
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{
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BIO_TYPE_FD,"file descriptor",
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fd_write,
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fd_read,
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fd_puts,
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NULL, /* fd_gets, */
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fd_ctrl,
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fd_new,
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fd_free,
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NULL,
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};
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BIO_METHOD *BIO_s_fd(void)
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{
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return(&methods_fdp);
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}
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BIO *BIO_new_fd(int fd,int close_flag)
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{
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BIO *ret;
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ret=BIO_new(BIO_s_fd());
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if (ret == NULL) return(NULL);
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BIO_set_fd(ret,fd,close_flag);
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return(ret);
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}
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static int fd_new(BIO *bi)
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{
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bi->init=0;
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bi->num=0;
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bi->ptr=NULL;
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bi->flags=0;
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return(1);
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}
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static int fd_free(BIO *a)
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{
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if (a == NULL) return(0);
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if (a->shutdown)
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{
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if (a->init)
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{
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close(a->num);
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}
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a->init=0;
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a->flags=0;
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}
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return(1);
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}
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static int fd_read(BIO *b, char *out,int outl)
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{
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int ret=0;
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if (out != NULL)
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{
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clear_sys_error();
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ret=read(b->num,out,outl);
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BIO_clear_retry_flags(b);
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if (ret <= 0)
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{
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if (BIO_fd_should_retry(ret))
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BIO_set_retry_read(b);
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}
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}
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return(ret);
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}
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static int fd_write(BIO *b, const char *in, int inl)
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{
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int ret;
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clear_sys_error();
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ret=write(b->num,in,inl);
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BIO_clear_retry_flags(b);
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if (ret <= 0)
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{
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if (BIO_fd_should_retry(ret))
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BIO_set_retry_write(b);
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}
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return(ret);
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}
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static long fd_ctrl(BIO *b, int cmd, long num, void *ptr)
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{
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long ret=1;
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int *ip;
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switch (cmd)
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{
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case BIO_CTRL_RESET:
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num=0;
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case BIO_C_FILE_SEEK:
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ret=(long)lseek(b->num,num,0);
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break;
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case BIO_C_FILE_TELL:
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case BIO_CTRL_INFO:
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ret=(long)lseek(b->num,0,1);
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break;
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case BIO_C_SET_FD:
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fd_free(b);
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b->num= *((int *)ptr);
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b->shutdown=(int)num;
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b->init=1;
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break;
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case BIO_C_GET_FD:
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if (b->init)
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{
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ip=(int *)ptr;
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if (ip != NULL) *ip=b->num;
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ret=b->num;
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}
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else
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ret= -1;
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break;
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case BIO_CTRL_GET_CLOSE:
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ret=b->shutdown;
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break;
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case BIO_CTRL_SET_CLOSE:
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b->shutdown=(int)num;
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break;
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case BIO_CTRL_PENDING:
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case BIO_CTRL_WPENDING:
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ret=0;
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break;
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case BIO_CTRL_DUP:
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case BIO_CTRL_FLUSH:
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ret=1;
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break;
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default:
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ret=0;
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break;
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}
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return(ret);
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}
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static int fd_puts(BIO *bp, const char *str)
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{
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int n,ret;
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n=strlen(str);
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ret=fd_write(bp,str,n);
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return(ret);
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}
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int BIO_fd_should_retry(int i)
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{
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int err;
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if ((i == 0) || (i == -1))
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{
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err=get_last_sys_error();
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#if defined(OPENSSL_SYS_WINDOWS) && 0 /* more microsoft stupidity? perhaps not? Ben 4/1/99 */
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if ((i == -1) && (err == 0))
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return(1);
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#endif
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return(BIO_fd_non_fatal_error(err));
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}
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return(0);
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}
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int BIO_fd_non_fatal_error(int err)
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{
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switch (err)
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{
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#ifdef EWOULDBLOCK
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# ifdef WSAEWOULDBLOCK
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# if WSAEWOULDBLOCK != EWOULDBLOCK
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case EWOULDBLOCK:
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# endif
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# else
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case EWOULDBLOCK:
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# endif
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#endif
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#if defined(ENOTCONN)
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case ENOTCONN:
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#endif
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#ifdef EINTR
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case EINTR:
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#endif
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#ifdef EAGAIN
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#if EWOULDBLOCK != EAGAIN
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case EAGAIN:
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# endif
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#endif
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#ifdef EPROTO
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case EPROTO:
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#endif
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#ifdef EINPROGRESS
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case EINPROGRESS:
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#endif
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#ifdef EALREADY
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case EALREADY:
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#endif
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return(1);
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/* break; */
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default:
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break;
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}
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return(0);
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}
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