CSR Parsing (without attributes / extensions) implemented
diff --git a/programs/x509/req_app.c b/programs/x509/req_app.c
new file mode 100644
index 0000000..8c0e3fe
--- /dev/null
+++ b/programs/x509/req_app.c
@@ -0,0 +1,152 @@
+/*
+ * Certificate request reading application
+ *
+ * Copyright (C) 2006-2013, Brainspark B.V.
+ *
+ * This file is part of PolarSSL (http://www.polarssl.org)
+ * Lead Maintainer: Paul Bakker <polarssl_maintainer at polarssl.org>
+ *
+ * All rights reserved.
+ *
+ * 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.
+ */
+
+#ifndef _CRT_SECURE_NO_DEPRECATE
+#define _CRT_SECURE_NO_DEPRECATE 1
+#endif
+
+#include <string.h>
+#include <stdlib.h>
+#include <stdio.h>
+
+#include "polarssl/config.h"
+
+#include "polarssl/x509.h"
+
+#define DFL_FILENAME "cert.req"
+#define DFL_DEBUG_LEVEL 0
+
+/*
+ * global options
+ */
+struct options
+{
+ const char *filename; /* filename of the certificate request */
+} opt;
+
+#define USAGE \
+ "\n usage: req_app param=<>...\n" \
+ "\n acceptable parameters:\n" \
+ " filename=%%s default: cert.req\n" \
+ "\n"
+
+#if !defined(POLARSSL_BIGNUM_C) || !defined(POLARSSL_RSA_C) || \
+ !defined(POLARSSL_X509_PARSE_C) || !defined(POLARSSL_FS_IO)
+int main( int argc, char *argv[] )
+{
+ ((void) argc);
+ ((void) argv);
+
+ printf("POLARSSL_BIGNUM_C and/or POLARSSL_RSA_C and/or "
+ "POLARSSL_X509_PARSE_C and/or POLARSSL_FS_IO not defined.\n");
+ return( 0 );
+}
+#else
+int main( int argc, char *argv[] )
+{
+ int ret = 0;
+ unsigned char buf[100000];
+ x509_csr csr;
+ int i, j, n;
+ char *p, *q;
+
+ /*
+ * Set to sane values
+ */
+ memset( &csr, 0, sizeof( x509_csr ) );
+
+ if( argc == 0 )
+ {
+ usage:
+ printf( USAGE );
+ goto exit;
+ }
+
+ opt.filename = DFL_FILENAME;
+
+ for( i = 1; i < argc; i++ )
+ {
+ n = strlen( argv[i] );
+
+ for( j = 0; j < n; j++ )
+ {
+ if( argv[i][j] >= 'A' && argv[i][j] <= 'Z' )
+ argv[i][j] |= 0x20;
+ }
+
+ p = argv[i];
+ if( ( q = strchr( p, '=' ) ) == NULL )
+ goto usage;
+ *q++ = '\0';
+
+ if( strcmp( p, "filename" ) == 0 )
+ opt.filename = q;
+ else
+ goto usage;
+ }
+
+ /*
+ * 1.1. Load the CSR
+ */
+ printf( "\n . Loading the CSR ..." );
+ fflush( stdout );
+
+ ret = x509parse_csrfile( &csr, opt.filename );
+
+ if( ret != 0 )
+ {
+ printf( " failed\n ! x509parse_csr returned %d\n\n", ret );
+ x509_csr_free( &csr );
+ goto exit;
+ }
+
+ printf( " ok\n" );
+
+ /*
+ * 1.2 Print the CSR
+ */
+ printf( " . CSR information ...\n" );
+ ret = x509parse_csr_info( (char *) buf, sizeof( buf ) - 1, " ", &csr );
+ if( ret == -1 )
+ {
+ printf( " failed\n ! x509parse_csr_info returned %d\n\n", ret );
+ x509_csr_free( &csr );
+ goto exit;
+ }
+
+ printf( "%s\n", buf );
+
+exit:
+ x509_csr_free( &csr );
+
+#if defined(_WIN32)
+ printf( " + Press Enter to exit this program.\n" );
+ fflush( stdout ); getchar();
+#endif
+
+ return( ret );
+}
+#endif /* POLARSSL_BIGNUM_C && POLARSSL_RSA_C && POLARSSL_X509_PARSE_C &&
+ POLARSSL_FS_IO */