323 lines
8.3 KiB
C
Executable File
323 lines
8.3 KiB
C
Executable File
/* $OpenBSD: bss_file.c,v 1.34 2022/01/07 09:02:17 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.]
|
|
*/
|
|
|
|
/*
|
|
* 03-Dec-1997 rdenny@dc3.com Fix bug preventing use of stdin/stdout
|
|
* with binary data (e.g. asn1parse -inform DER < xxx) under
|
|
* Windows
|
|
*/
|
|
|
|
#ifndef HEADER_BSS_FILE_C
|
|
#define HEADER_BSS_FILE_C
|
|
|
|
#if defined(__linux) || defined(__sun) || defined(__hpux)
|
|
/* Following definition aliases fopen to fopen64 on above mentioned
|
|
* platforms. This makes it possible to open and sequentially access
|
|
* files larger than 2GB from 32-bit application. It does not allow to
|
|
* traverse them beyond 2GB with fseek/ftell, but on the other hand *no*
|
|
* 32-bit platform permits that, not with fseek/ftell. Not to mention
|
|
* that breaking 2GB limit for seeking would require surgery to *our*
|
|
* API. But sequential access suffices for practical cases when you
|
|
* can run into large files, such as fingerprinting, so we can let API
|
|
* alone. For reference, the list of 32-bit platforms which allow for
|
|
* sequential access of large files without extra "magic" comprise *BSD,
|
|
* Darwin, IRIX...
|
|
*/
|
|
#ifndef _FILE_OFFSET_BITS
|
|
#define _FILE_OFFSET_BITS 64
|
|
#endif
|
|
#endif
|
|
|
|
#include <errno.h>
|
|
#include <stdio.h>
|
|
#include <string.h>
|
|
|
|
#include <openssl/bio.h>
|
|
#include <openssl/err.h>
|
|
|
|
#include "bio_local.h"
|
|
|
|
static int file_write(BIO *h, const char *buf, int num);
|
|
static int file_read(BIO *h, char *buf, int size);
|
|
static int file_puts(BIO *h, const char *str);
|
|
static int file_gets(BIO *h, char *str, int size);
|
|
static long file_ctrl(BIO *h, int cmd, long arg1, void *arg2);
|
|
static int file_new(BIO *h);
|
|
static int file_free(BIO *data);
|
|
|
|
static const BIO_METHOD methods_filep = {
|
|
.type = BIO_TYPE_FILE,
|
|
.name = "FILE pointer",
|
|
.bwrite = file_write,
|
|
.bread = file_read,
|
|
.bputs = file_puts,
|
|
.bgets = file_gets,
|
|
.ctrl = file_ctrl,
|
|
.create = file_new,
|
|
.destroy = file_free
|
|
};
|
|
|
|
BIO *
|
|
BIO_new_file(const char *filename, const char *mode)
|
|
{
|
|
BIO *ret;
|
|
FILE *file = NULL;
|
|
|
|
file = fopen(filename, mode);
|
|
|
|
if (file == NULL) {
|
|
SYSerror(errno);
|
|
ERR_asprintf_error_data("fopen('%s', '%s')", filename, mode);
|
|
if (errno == ENOENT)
|
|
BIOerror(BIO_R_NO_SUCH_FILE);
|
|
else
|
|
BIOerror(ERR_R_SYS_LIB);
|
|
return (NULL);
|
|
}
|
|
if ((ret = BIO_new(BIO_s_file())) == NULL) {
|
|
fclose(file);
|
|
return (NULL);
|
|
}
|
|
|
|
BIO_set_fp(ret, file, BIO_CLOSE);
|
|
return (ret);
|
|
}
|
|
|
|
BIO *
|
|
BIO_new_fp(FILE *stream, int close_flag)
|
|
{
|
|
BIO *ret;
|
|
|
|
if ((ret = BIO_new(BIO_s_file())) == NULL)
|
|
return (NULL);
|
|
|
|
BIO_set_fp(ret, stream, close_flag);
|
|
return (ret);
|
|
}
|
|
|
|
const BIO_METHOD *
|
|
BIO_s_file(void)
|
|
{
|
|
return (&methods_filep);
|
|
}
|
|
|
|
static int
|
|
file_new(BIO *bi)
|
|
{
|
|
bi->init = 0;
|
|
bi->num = 0;
|
|
bi->ptr = NULL;
|
|
bi->flags=0;
|
|
return (1);
|
|
}
|
|
|
|
static int
|
|
file_free(BIO *a)
|
|
{
|
|
if (a == NULL)
|
|
return (0);
|
|
if (a->shutdown) {
|
|
if ((a->init) && (a->ptr != NULL)) {
|
|
fclose (a->ptr);
|
|
a->ptr = NULL;
|
|
a->flags = 0;
|
|
}
|
|
a->init = 0;
|
|
}
|
|
return (1);
|
|
}
|
|
|
|
static int
|
|
file_read(BIO *b, char *out, int outl)
|
|
{
|
|
int ret = 0;
|
|
|
|
if (b->init && out != NULL) {
|
|
ret = fread(out, 1, outl, (FILE *)b->ptr);
|
|
if (ret == 0 && ferror((FILE *)b->ptr)) {
|
|
SYSerror(errno);
|
|
BIOerror(ERR_R_SYS_LIB);
|
|
ret = -1;
|
|
}
|
|
}
|
|
return (ret);
|
|
}
|
|
|
|
static int
|
|
file_write(BIO *b, const char *in, int inl)
|
|
{
|
|
int ret = 0;
|
|
|
|
if (b->init && in != NULL)
|
|
ret = fwrite(in, 1, inl, (FILE *)b->ptr);
|
|
return (ret);
|
|
}
|
|
|
|
static long
|
|
file_ctrl(BIO *b, int cmd, long num, void *ptr)
|
|
{
|
|
long ret = 1;
|
|
FILE *fp = (FILE *)b->ptr;
|
|
FILE **fpp;
|
|
char p[4];
|
|
|
|
switch (cmd) {
|
|
case BIO_C_FILE_SEEK:
|
|
case BIO_CTRL_RESET:
|
|
ret = (long)fseek(fp, num, 0);
|
|
break;
|
|
case BIO_CTRL_EOF:
|
|
ret = (long)feof(fp);
|
|
break;
|
|
case BIO_C_FILE_TELL:
|
|
case BIO_CTRL_INFO:
|
|
ret = ftell(fp);
|
|
break;
|
|
case BIO_C_SET_FILE_PTR:
|
|
file_free(b);
|
|
b->shutdown = (int)num&BIO_CLOSE;
|
|
b->ptr = ptr;
|
|
b->init = 1;
|
|
break;
|
|
case BIO_C_SET_FILENAME:
|
|
file_free(b);
|
|
b->shutdown = (int)num&BIO_CLOSE;
|
|
if (num & BIO_FP_APPEND) {
|
|
if (num & BIO_FP_READ)
|
|
strlcpy(p, "a+", sizeof p);
|
|
else strlcpy(p, "a", sizeof p);
|
|
} else if ((num & BIO_FP_READ) && (num & BIO_FP_WRITE))
|
|
strlcpy(p, "r+", sizeof p);
|
|
else if (num & BIO_FP_WRITE)
|
|
strlcpy(p, "w", sizeof p);
|
|
else if (num & BIO_FP_READ)
|
|
strlcpy(p, "r", sizeof p);
|
|
else {
|
|
BIOerror(BIO_R_BAD_FOPEN_MODE);
|
|
ret = 0;
|
|
break;
|
|
}
|
|
fp = fopen(ptr, p);
|
|
if (fp == NULL) {
|
|
SYSerror(errno);
|
|
ERR_asprintf_error_data("fopen('%s', '%s')", ptr, p);
|
|
BIOerror(ERR_R_SYS_LIB);
|
|
ret = 0;
|
|
break;
|
|
}
|
|
b->ptr = fp;
|
|
b->init = 1;
|
|
break;
|
|
case BIO_C_GET_FILE_PTR:
|
|
/* the ptr parameter is actually a FILE ** in this case. */
|
|
if (ptr != NULL) {
|
|
fpp = (FILE **)ptr;
|
|
*fpp = (FILE *)b->ptr;
|
|
}
|
|
break;
|
|
case BIO_CTRL_GET_CLOSE:
|
|
ret = (long)b->shutdown;
|
|
break;
|
|
case BIO_CTRL_SET_CLOSE:
|
|
b->shutdown = (int)num;
|
|
break;
|
|
case BIO_CTRL_FLUSH:
|
|
fflush((FILE *)b->ptr);
|
|
break;
|
|
case BIO_CTRL_DUP:
|
|
ret = 1;
|
|
break;
|
|
|
|
case BIO_CTRL_WPENDING:
|
|
case BIO_CTRL_PENDING:
|
|
case BIO_CTRL_PUSH:
|
|
case BIO_CTRL_POP:
|
|
default:
|
|
ret = 0;
|
|
break;
|
|
}
|
|
return (ret);
|
|
}
|
|
|
|
static int
|
|
file_gets(BIO *bp, char *buf, int size)
|
|
{
|
|
int ret = 0;
|
|
|
|
buf[0] = '\0';
|
|
if (!fgets(buf, size,(FILE *)bp->ptr))
|
|
goto err;
|
|
if (buf[0] != '\0')
|
|
ret = strlen(buf);
|
|
err:
|
|
return (ret);
|
|
}
|
|
|
|
static int
|
|
file_puts(BIO *bp, const char *str)
|
|
{
|
|
int n, ret;
|
|
|
|
n = strlen(str);
|
|
ret = file_write(bp, str, n);
|
|
return (ret);
|
|
}
|
|
|
|
|
|
#endif /* HEADER_BSS_FILE_C */
|