forked from eden-emu/eden
320 lines
7.6 KiB
C
320 lines
7.6 KiB
C
/*
|
|
* Convert PEM to DER
|
|
*
|
|
* Copyright The Mbed TLS Contributors
|
|
* SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
|
|
*
|
|
* This file is provided under the Apache License 2.0, or the
|
|
* GNU General Public License v2.0 or later.
|
|
*
|
|
* **********
|
|
* Apache License 2.0:
|
|
*
|
|
* Licensed under the Apache License, Version 2.0 (the "License"); you may
|
|
* not use this file except in compliance with the License.
|
|
* You may obtain a copy of the License at
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
|
|
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
* See the License for the specific language governing permissions and
|
|
* limitations under the License.
|
|
*
|
|
* **********
|
|
*
|
|
* **********
|
|
* GNU General Public License v2.0 or later:
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License along
|
|
* with this program; if not, write to the Free Software Foundation, Inc.,
|
|
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
|
|
*
|
|
* **********
|
|
*/
|
|
|
|
#if !defined(MBEDTLS_CONFIG_FILE)
|
|
#include "mbedtls/config.h"
|
|
#else
|
|
#include MBEDTLS_CONFIG_FILE
|
|
#endif
|
|
|
|
#if defined(MBEDTLS_PLATFORM_C)
|
|
#include "mbedtls/platform.h"
|
|
#else
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#define mbedtls_free free
|
|
#define mbedtls_calloc calloc
|
|
#define mbedtls_printf printf
|
|
#define mbedtls_exit exit
|
|
#define MBEDTLS_EXIT_SUCCESS EXIT_SUCCESS
|
|
#define MBEDTLS_EXIT_FAILURE EXIT_FAILURE
|
|
#endif /* MBEDTLS_PLATFORM_C */
|
|
|
|
#if defined(MBEDTLS_BASE64_C) && defined(MBEDTLS_FS_IO)
|
|
#include "mbedtls/error.h"
|
|
#include "mbedtls/base64.h"
|
|
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#endif
|
|
|
|
#define DFL_FILENAME "file.pem"
|
|
#define DFL_OUTPUT_FILENAME "file.der"
|
|
|
|
#define USAGE \
|
|
"\n usage: pem2der param=<>...\n" \
|
|
"\n acceptable parameters:\n" \
|
|
" filename=%%s default: file.pem\n" \
|
|
" output_file=%%s default: file.der\n" \
|
|
"\n"
|
|
|
|
#if !defined(MBEDTLS_BASE64_C) || !defined(MBEDTLS_FS_IO)
|
|
int main( void )
|
|
{
|
|
mbedtls_printf("MBEDTLS_BASE64_C and/or MBEDTLS_FS_IO not defined.\n");
|
|
mbedtls_exit( 0 );
|
|
}
|
|
#else
|
|
|
|
|
|
/*
|
|
* global options
|
|
*/
|
|
struct options
|
|
{
|
|
const char *filename; /* filename of the input file */
|
|
const char *output_file; /* where to store the output */
|
|
} opt;
|
|
|
|
int convert_pem_to_der( const unsigned char *input, size_t ilen,
|
|
unsigned char *output, size_t *olen )
|
|
{
|
|
int ret;
|
|
const unsigned char *s1, *s2, *end = input + ilen;
|
|
size_t len = 0;
|
|
|
|
s1 = (unsigned char *) strstr( (const char *) input, "-----BEGIN" );
|
|
if( s1 == NULL )
|
|
return( -1 );
|
|
|
|
s2 = (unsigned char *) strstr( (const char *) input, "-----END" );
|
|
if( s2 == NULL )
|
|
return( -1 );
|
|
|
|
s1 += 10;
|
|
while( s1 < end && *s1 != '-' )
|
|
s1++;
|
|
while( s1 < end && *s1 == '-' )
|
|
s1++;
|
|
if( *s1 == '\r' ) s1++;
|
|
if( *s1 == '\n' ) s1++;
|
|
|
|
if( s2 <= s1 || s2 > end )
|
|
return( -1 );
|
|
|
|
ret = mbedtls_base64_decode( NULL, 0, &len, (const unsigned char *) s1, s2 - s1 );
|
|
if( ret == MBEDTLS_ERR_BASE64_INVALID_CHARACTER )
|
|
return( ret );
|
|
|
|
if( len > *olen )
|
|
return( -1 );
|
|
|
|
if( ( ret = mbedtls_base64_decode( output, len, &len, (const unsigned char *) s1,
|
|
s2 - s1 ) ) != 0 )
|
|
{
|
|
return( ret );
|
|
}
|
|
|
|
*olen = len;
|
|
|
|
return( 0 );
|
|
}
|
|
|
|
/*
|
|
* Load all data from a file into a given buffer.
|
|
*/
|
|
static int load_file( const char *path, unsigned char **buf, size_t *n )
|
|
{
|
|
FILE *f;
|
|
long size;
|
|
|
|
if( ( f = fopen( path, "rb" ) ) == NULL )
|
|
return( -1 );
|
|
|
|
fseek( f, 0, SEEK_END );
|
|
if( ( size = ftell( f ) ) == -1 )
|
|
{
|
|
fclose( f );
|
|
return( -1 );
|
|
}
|
|
fseek( f, 0, SEEK_SET );
|
|
|
|
*n = (size_t) size;
|
|
|
|
if( *n + 1 == 0 ||
|
|
( *buf = mbedtls_calloc( 1, *n + 1 ) ) == NULL )
|
|
{
|
|
fclose( f );
|
|
return( -1 );
|
|
}
|
|
|
|
if( fread( *buf, 1, *n, f ) != *n )
|
|
{
|
|
fclose( f );
|
|
free( *buf );
|
|
*buf = NULL;
|
|
return( -1 );
|
|
}
|
|
|
|
fclose( f );
|
|
|
|
(*buf)[*n] = '\0';
|
|
|
|
return( 0 );
|
|
}
|
|
|
|
/*
|
|
* Write buffer to a file
|
|
*/
|
|
static int write_file( const char *path, unsigned char *buf, size_t n )
|
|
{
|
|
FILE *f;
|
|
|
|
if( ( f = fopen( path, "wb" ) ) == NULL )
|
|
return( -1 );
|
|
|
|
if( fwrite( buf, 1, n, f ) != n )
|
|
{
|
|
fclose( f );
|
|
return( -1 );
|
|
}
|
|
|
|
fclose( f );
|
|
return( 0 );
|
|
}
|
|
|
|
int main( int argc, char *argv[] )
|
|
{
|
|
int ret = 1;
|
|
int exit_code = MBEDTLS_EXIT_FAILURE;
|
|
unsigned char *pem_buffer = NULL;
|
|
unsigned char der_buffer[4096];
|
|
char buf[1024];
|
|
size_t pem_size, der_size = sizeof(der_buffer);
|
|
int i;
|
|
char *p, *q;
|
|
|
|
/*
|
|
* Set to sane values
|
|
*/
|
|
memset( buf, 0, sizeof(buf) );
|
|
memset( der_buffer, 0, sizeof(der_buffer) );
|
|
|
|
if( argc == 0 )
|
|
{
|
|
usage:
|
|
mbedtls_printf( USAGE );
|
|
goto exit;
|
|
}
|
|
|
|
opt.filename = DFL_FILENAME;
|
|
opt.output_file = DFL_OUTPUT_FILENAME;
|
|
|
|
for( i = 1; i < argc; i++ )
|
|
{
|
|
|
|
p = argv[i];
|
|
if( ( q = strchr( p, '=' ) ) == NULL )
|
|
goto usage;
|
|
*q++ = '\0';
|
|
|
|
if( strcmp( p, "filename" ) == 0 )
|
|
opt.filename = q;
|
|
else if( strcmp( p, "output_file" ) == 0 )
|
|
opt.output_file = q;
|
|
else
|
|
goto usage;
|
|
}
|
|
|
|
/*
|
|
* 1.1. Load the PEM file
|
|
*/
|
|
mbedtls_printf( "\n . Loading the PEM file ..." );
|
|
fflush( stdout );
|
|
|
|
ret = load_file( opt.filename, &pem_buffer, &pem_size );
|
|
|
|
if( ret != 0 )
|
|
{
|
|
#ifdef MBEDTLS_ERROR_C
|
|
mbedtls_strerror( ret, buf, 1024 );
|
|
#endif
|
|
mbedtls_printf( " failed\n ! load_file returned %d - %s\n\n", ret, buf );
|
|
goto exit;
|
|
}
|
|
|
|
mbedtls_printf( " ok\n" );
|
|
|
|
/*
|
|
* 1.2. Convert from PEM to DER
|
|
*/
|
|
mbedtls_printf( " . Converting from PEM to DER ..." );
|
|
fflush( stdout );
|
|
|
|
if( ( ret = convert_pem_to_der( pem_buffer, pem_size, der_buffer, &der_size ) ) != 0 )
|
|
{
|
|
#ifdef MBEDTLS_ERROR_C
|
|
mbedtls_strerror( ret, buf, 1024 );
|
|
#endif
|
|
mbedtls_printf( " failed\n ! convert_pem_to_der %d - %s\n\n", ret, buf );
|
|
goto exit;
|
|
}
|
|
|
|
mbedtls_printf( " ok\n" );
|
|
|
|
/*
|
|
* 1.3. Write the DER file
|
|
*/
|
|
mbedtls_printf( " . Writing the DER file ..." );
|
|
fflush( stdout );
|
|
|
|
ret = write_file( opt.output_file, der_buffer, der_size );
|
|
|
|
if( ret != 0 )
|
|
{
|
|
#ifdef MBEDTLS_ERROR_C
|
|
mbedtls_strerror( ret, buf, 1024 );
|
|
#endif
|
|
mbedtls_printf( " failed\n ! write_file returned %d - %s\n\n", ret, buf );
|
|
goto exit;
|
|
}
|
|
|
|
mbedtls_printf( " ok\n" );
|
|
|
|
exit_code = MBEDTLS_EXIT_SUCCESS;
|
|
|
|
exit:
|
|
free( pem_buffer );
|
|
|
|
#if defined(_WIN32)
|
|
mbedtls_printf( " + Press Enter to exit this program.\n" );
|
|
fflush( stdout ); getchar();
|
|
#endif
|
|
|
|
mbedtls_exit( exit_code );
|
|
}
|
|
#endif /* MBEDTLS_BASE64_C && MBEDTLS_FS_IO */
|