diff options
Diffstat (limited to 'lib/mbedtls-2.27.0/programs/util/pem2der.c')
| -rw-r--r-- | lib/mbedtls-2.27.0/programs/util/pem2der.c | 293 |
1 files changed, 293 insertions, 0 deletions
diff --git a/lib/mbedtls-2.27.0/programs/util/pem2der.c b/lib/mbedtls-2.27.0/programs/util/pem2der.c new file mode 100644 index 0000000..a2fd0fc --- /dev/null +++ b/lib/mbedtls-2.27.0/programs/util/pem2der.c @@ -0,0 +1,293 @@ +/* + * Convert PEM to DER + * + * Copyright The Mbed TLS Contributors + * SPDX-License-Identifier: Apache-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. + */ + +#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 */ |