forked from etc/pineapple-src
320 lines
8.3 KiB
C
Executable file
320 lines
8.3 KiB
C
Executable file
/* $OpenBSD: bss_file.c,v 1.33 2018/05/30 00:23:04 tb Exp $ */
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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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/*
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* 03-Dec-1997 rdenny@dc3.com Fix bug preventing use of stdin/stdout
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* with binary data (e.g. asn1parse -inform DER < xxx) under
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* Windows
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*/
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#ifndef HEADER_BSS_FILE_C
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#define HEADER_BSS_FILE_C
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#if defined(__linux) || defined(__sun) || defined(__hpux)
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/* Following definition aliases fopen to fopen64 on above mentioned
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* platforms. This makes it possible to open and sequentially access
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* files larger than 2GB from 32-bit application. It does not allow to
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* traverse them beyond 2GB with fseek/ftell, but on the other hand *no*
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* 32-bit platform permits that, not with fseek/ftell. Not to mention
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* that breaking 2GB limit for seeking would require surgery to *our*
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* API. But sequential access suffices for practical cases when you
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* can run into large files, such as fingerprinting, so we can let API
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* alone. For reference, the list of 32-bit platforms which allow for
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* sequential access of large files without extra "magic" comprise *BSD,
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* Darwin, IRIX...
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*/
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#ifndef _FILE_OFFSET_BITS
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#define _FILE_OFFSET_BITS 64
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#endif
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#endif
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#include <errno.h>
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#include <stdio.h>
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#include <string.h>
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#include <openssl/bio.h>
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#include <openssl/err.h>
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static int file_write(BIO *h, const char *buf, int num);
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static int file_read(BIO *h, char *buf, int size);
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static int file_puts(BIO *h, const char *str);
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static int file_gets(BIO *h, char *str, int size);
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static long file_ctrl(BIO *h, int cmd, long arg1, void *arg2);
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static int file_new(BIO *h);
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static int file_free(BIO *data);
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static const BIO_METHOD methods_filep = {
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.type = BIO_TYPE_FILE,
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.name = "FILE pointer",
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.bwrite = file_write,
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.bread = file_read,
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.bputs = file_puts,
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.bgets = file_gets,
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.ctrl = file_ctrl,
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.create = file_new,
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.destroy = file_free
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};
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BIO *
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BIO_new_file(const char *filename, const char *mode)
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{
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BIO *ret;
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FILE *file = NULL;
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file = fopen(filename, mode);
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if (file == NULL) {
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SYSerror(errno);
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ERR_asprintf_error_data("fopen('%s', '%s')", filename, mode);
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if (errno == ENOENT)
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BIOerror(BIO_R_NO_SUCH_FILE);
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else
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BIOerror(ERR_R_SYS_LIB);
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return (NULL);
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}
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if ((ret = BIO_new(BIO_s_file())) == NULL) {
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fclose(file);
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return (NULL);
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}
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BIO_set_fp(ret, file, BIO_CLOSE);
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return (ret);
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}
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BIO *
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BIO_new_fp(FILE *stream, int close_flag)
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{
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BIO *ret;
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if ((ret = BIO_new(BIO_s_file())) == NULL)
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return (NULL);
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BIO_set_fp(ret, stream, close_flag);
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return (ret);
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}
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const BIO_METHOD *
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BIO_s_file(void)
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{
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return (&methods_filep);
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}
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static int
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file_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
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file_free(BIO *a)
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{
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if (a == NULL)
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return (0);
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if (a->shutdown) {
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if ((a->init) && (a->ptr != NULL)) {
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fclose (a->ptr);
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a->ptr = NULL;
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a->flags = 0;
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}
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a->init = 0;
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}
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return (1);
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}
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static int
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file_read(BIO *b, char *out, int outl)
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{
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int ret = 0;
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if (b->init && out != NULL) {
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ret = fread(out, 1, outl, (FILE *)b->ptr);
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if (ret == 0 && ferror((FILE *)b->ptr)) {
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SYSerror(errno);
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BIOerror(ERR_R_SYS_LIB);
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ret = -1;
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}
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}
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return (ret);
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}
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static int
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file_write(BIO *b, const char *in, int inl)
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{
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int ret = 0;
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if (b->init && in != NULL)
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ret = fwrite(in, 1, inl, (FILE *)b->ptr);
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return (ret);
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}
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static long
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file_ctrl(BIO *b, int cmd, long num, void *ptr)
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{
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long ret = 1;
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FILE *fp = (FILE *)b->ptr;
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FILE **fpp;
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char p[4];
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switch (cmd) {
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case BIO_C_FILE_SEEK:
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case BIO_CTRL_RESET:
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ret = (long)fseek(fp, num, 0);
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break;
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case BIO_CTRL_EOF:
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ret = (long)feof(fp);
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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 = ftell(fp);
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break;
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case BIO_C_SET_FILE_PTR:
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file_free(b);
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b->shutdown = (int)num&BIO_CLOSE;
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b->ptr = ptr;
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b->init = 1;
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break;
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case BIO_C_SET_FILENAME:
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file_free(b);
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b->shutdown = (int)num&BIO_CLOSE;
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if (num & BIO_FP_APPEND) {
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if (num & BIO_FP_READ)
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strlcpy(p, "a+", sizeof p);
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else strlcpy(p, "a", sizeof p);
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} else if ((num & BIO_FP_READ) && (num & BIO_FP_WRITE))
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strlcpy(p, "r+", sizeof p);
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else if (num & BIO_FP_WRITE)
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strlcpy(p, "w", sizeof p);
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else if (num & BIO_FP_READ)
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strlcpy(p, "r", sizeof p);
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else {
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BIOerror(BIO_R_BAD_FOPEN_MODE);
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ret = 0;
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break;
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}
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fp = fopen(ptr, p);
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if (fp == NULL) {
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SYSerror(errno);
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ERR_asprintf_error_data("fopen('%s', '%s')", ptr, p);
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BIOerror(ERR_R_SYS_LIB);
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ret = 0;
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break;
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}
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b->ptr = fp;
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b->init = 1;
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break;
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case BIO_C_GET_FILE_PTR:
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/* the ptr parameter is actually a FILE ** in this case. */
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if (ptr != NULL) {
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fpp = (FILE **)ptr;
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*fpp = (FILE *)b->ptr;
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}
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break;
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case BIO_CTRL_GET_CLOSE:
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ret = (long)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_FLUSH:
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fflush((FILE *)b->ptr);
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break;
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case BIO_CTRL_DUP:
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ret = 1;
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break;
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case BIO_CTRL_WPENDING:
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case BIO_CTRL_PENDING:
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case BIO_CTRL_PUSH:
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case BIO_CTRL_POP:
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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
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file_gets(BIO *bp, char *buf, int size)
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{
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int ret = 0;
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buf[0] = '\0';
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if (!fgets(buf, size,(FILE *)bp->ptr))
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goto err;
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if (buf[0] != '\0')
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ret = strlen(buf);
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err:
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return (ret);
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}
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static int
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file_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 = file_write(bp, str, n);
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return (ret);
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}
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#endif /* HEADER_BSS_FILE_C */
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