mirror of
https://github.com/yuzu-emu/mbedtls.git
synced 2024-11-27 03:24:18 +01:00
299 lines
7.8 KiB
C
299 lines
7.8 KiB
C
/*
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* Certificate request generation
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*
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* Copyright (C) 2006-2011, Brainspark B.V.
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*
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* This file is part of PolarSSL (http://www.polarssl.org)
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* Lead Maintainer: Paul Bakker <polarssl_maintainer at polarssl.org>
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*
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* All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#ifndef _CRT_SECURE_NO_DEPRECATE
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#define _CRT_SECURE_NO_DEPRECATE 1
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#endif
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#include <string.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include "polarssl/config.h"
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#include "polarssl/error.h"
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#include "polarssl/rsa.h"
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#include "polarssl/x509.h"
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#include "polarssl/base64.h"
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#include "polarssl/x509write.h"
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#include "polarssl/oid.h"
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#define DFL_FILENAME "keyfile.key"
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#define DFL_DEBUG_LEVEL 0
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#define DFL_OUTPUT_FILENAME "cert.req"
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#define DFL_SUBJECT_NAME "CN=Cert,O=PolarSSL,C=NL"
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/*
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* global options
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*/
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struct options
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{
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char *filename; /* filename of the key file */
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int debug_level; /* level of debugging */
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char *output_file; /* where to store the constructed key file */
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char *subject_name; /* subject name for certificate request */
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} opt;
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void my_debug( void *ctx, int level, const char *str )
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{
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if( level < opt.debug_level )
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{
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fprintf( (FILE *) ctx, "%s", str );
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fflush( (FILE *) ctx );
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}
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}
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void write_certificate_request( rsa_context *rsa, x509_req_name *req_name,
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char *output_file )
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{
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FILE *f;
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unsigned char output_buf[4096];
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unsigned char base_buf[4096];
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unsigned char *c;
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int ret;
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size_t len = 0, olen = 4096;
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memset(output_buf, 0, 4096);
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ret = x509_write_cert_req( output_buf, 4096, rsa, req_name, POLARSSL_MD_SHA1 );
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if( ret < 0 )
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return;
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len = ret;
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c = output_buf + 4095 - len;
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base64_encode( base_buf, &olen, c, len );
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c = base_buf;
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f = fopen( output_file, "w" );
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fprintf(f, "-----BEGIN CERTIFICATE REQUEST-----\n");
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while (olen)
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{
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int use_len = olen;
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if (use_len > 64) use_len = 64;
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fwrite( c, 1, use_len, f );
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olen -= use_len;
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c += use_len;
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fprintf(f, "\n");
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}
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fprintf(f, "-----END CERTIFICATE REQUEST-----\n");
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fclose(f);
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}
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#define USAGE \
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"\n usage: key_app param=<>...\n" \
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"\n acceptable parameters:\n" \
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" filename=%%s default: keyfile.key\n" \
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" debug_level=%%d default: 0 (disabled)\n" \
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" output_file=%%s default: cert.req\n" \
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" subject_name=%%s default: CN=Cert,O=PolarSSL,C=NL\n" \
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"\n"
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#if !defined(POLARSSL_BIGNUM_C) || !defined(POLARSSL_RSA_C) || \
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!defined(POLARSSL_X509_PARSE_C) || !defined(POLARSSL_FS_IO)
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int main( int argc, char *argv[] )
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{
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((void) argc);
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((void) argv);
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printf("POLARSSL_BIGNUM_C and/or POLARSSL_RSA_C and/or "
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"POLARSSL_X509_PARSE_C and/or POLARSSL_FS_IO not defined.\n");
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return( 0 );
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}
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#else
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int main( int argc, char *argv[] )
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{
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int ret = 0;
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rsa_context rsa;
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char buf[1024];
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int i, j, n;
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char *p, *q;
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char *s, *c, *end;
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int in_tag;
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char *oid = NULL;
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x509_req_name *req_name = NULL;
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x509_req_name *cur = req_name;
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/*
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* Set to sane values
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*/
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memset( &rsa, 0, sizeof( rsa_context ) );
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memset( buf, 0, 1024 );
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if( argc == 0 )
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{
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usage:
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printf( USAGE );
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goto exit;
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}
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opt.filename = DFL_FILENAME;
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opt.debug_level = DFL_DEBUG_LEVEL;
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opt.output_file = DFL_OUTPUT_FILENAME;
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opt.subject_name = DFL_SUBJECT_NAME;
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for( i = 1; i < argc; i++ )
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{
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p = argv[i];
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if( ( q = strchr( p, '=' ) ) == NULL )
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goto usage;
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*q++ = '\0';
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n = strlen( p );
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for( j = 0; j < n; j++ )
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{
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if( argv[i][j] >= 'A' && argv[i][j] <= 'Z' )
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argv[i][j] |= 0x20;
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}
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if( strcmp( p, "filename" ) == 0 )
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opt.filename = q;
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else if( strcmp( p, "output_file" ) == 0 )
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opt.output_file = q;
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else if( strcmp( p, "debug_level" ) == 0 )
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{
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opt.debug_level = atoi( q );
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if( opt.debug_level < 0 || opt.debug_level > 65535 )
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goto usage;
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}
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else if( strcmp( p, "subject_name" ) == 0 )
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{
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opt.subject_name = q;
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}
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else
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goto usage;
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}
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/*
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* 1.0. Check the subject name for validity
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*/
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s = opt.subject_name;
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end = s + strlen( s );
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c = s;
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in_tag = 1;
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while( c <= end )
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{
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if( in_tag && *c == '=' )
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{
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if( memcmp( s, "CN", 2 ) == 0 && c - s == 2 )
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oid = OID_AT_CN;
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else if( memcmp( s, "C", 1 ) == 0 && c - s == 1 )
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oid = OID_AT_COUNTRY;
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else if( memcmp( s, "O", 1 ) == 0 && c - s == 1 )
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oid = OID_AT_ORGANIZATION;
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else if( memcmp( s, "L", 1 ) == 0 && c - s == 1 )
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oid = OID_AT_LOCALITY;
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else if( memcmp( s, "R", 1 ) == 0 && c - s == 1 )
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oid = OID_PKCS9_EMAIL;
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else if( memcmp( s, "OU", 2 ) == 0 && c - s == 2 )
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oid = OID_AT_ORG_UNIT;
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else if( memcmp( s, "ST", 2 ) == 0 && c - s == 2 )
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oid = OID_AT_STATE;
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else
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{
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printf("Failed to parse subject name.\n");
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goto exit;
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}
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s = c + 1;
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in_tag = 0;
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}
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if( !in_tag && ( *c == ',' || c == end ) )
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{
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if( c - s > 127 )
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{
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printf("Name too large for buffer.\n");
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goto exit;
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}
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if( cur == NULL )
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{
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req_name = malloc( sizeof(x509_req_name) );
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cur = req_name;
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}
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else
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{
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cur->next = malloc( sizeof(x509_req_name) );
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cur = cur->next;
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}
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if( cur == NULL )
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{
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printf( "Failed to allocate memory.\n" );
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goto exit;
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}
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memset( cur, 0, sizeof(x509_req_name) );
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strncpy( cur->oid, oid, strlen( oid ) );
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strncpy( cur->name, s, c - s );
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s = c + 1;
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in_tag = 1;
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}
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c++;
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}
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/*
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* 1.1. Load the key
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*/
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printf( "\n . Loading the private key ..." );
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fflush( stdout );
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ret = x509parse_keyfile_rsa( &rsa, opt.filename, NULL );
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if( ret != 0 )
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{
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#ifdef POLARSSL_ERROR_C
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error_strerror( ret, buf, 1024 );
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#endif
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printf( " failed\n ! x509parse_key_rsa returned %d - %s\n\n", ret, buf );
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rsa_free( &rsa );
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goto exit;
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}
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printf( " ok\n" );
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write_certificate_request( &rsa, req_name, opt.output_file );
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exit:
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rsa_free( &rsa );
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#if defined(_WIN32)
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printf( " + Press Enter to exit this program.\n" );
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fflush( stdout ); getchar();
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#endif
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return( ret );
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}
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#endif /* POLARSSL_BIGNUM_C && POLARSSL_RSA_C &&
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POLARSSL_X509_PARSE_C && POLARSSL_FS_IO */
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