- Added crl_app program to allow easy reading and printing of X509 CRLs from file

ChangeLog

@@ -4,6 +4,8 @@ PolarSSL ChangeLog
 Features
    * Parsing PEM private keys encrypted with DES and AES
      are now supported as well (Fixes ticket #5)
+   * Added crl_app program to allow easy reading and
+     printing of X509 CRLs from file
 
 Changes
    * Parsing of PEM files moved to separate module (Fixes 

programs/Makefile

@@ -18,7 +18,7 @@ APPS =	aes/aescrypt2	aes/crypt_and_hash	\
 	ssl/ssl_server		random/gen_random	\
 	test/ssl_cert_test	test/benchmark		\
 	test/selftest		test/ssl_test		\
-	x509/cert_app
+	x509/cert_app		x509/crl_app
 
 .SILENT:
 
@@ -116,6 +116,10 @@ x509/cert_app: x509/cert_app.c ../library/libpolarssl.a
 	echo   "  CC    x509/cert_app.c"
 	$(CC) $(CFLAGS) $(OFLAGS) x509/cert_app.c    $(LDFLAGS) -o $@
 
+x509/crl_app: x509/crl_app.c ../library/libpolarssl.a
+	echo   "  CC    x509/crl_app.c"
+	$(CC) $(CFLAGS) $(OFLAGS) x509/crl_app.c    $(LDFLAGS) -o $@
+
 clean:
 	rm -f $(APPS)
 

programs/x509/CMakeLists.txt

@@ -9,6 +9,9 @@ endif(USE_PKCS11_HELPER_LIBRARY)
 add_executable(cert_app cert_app.c)
 target_link_libraries(cert_app ${libs})
 
-INSTALL(TARGETS cert_app
+add_executable(crl_app crl_app.c)
+target_link_libraries(crl_app ${libs})
+
+INSTALL(TARGETS cert_app crl_app
         DESTINATION "bin"
         PERMISSIONS OWNER_READ OWNER_WRITE OWNER_EXECUTE GROUP_READ GROUP_EXECUTE WORLD_READ WORLD_EXECUTE)

programs/x509/crl_app.c

@@ -0,0 +1,154 @@
+/*
+ *  CRL reading application
+ *
+ *  Copyright (C) 2006-2010, 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/x509.h"
+
+#define DFL_FILENAME            "crl.pem"
+#define DFL_DEBUG_LEVEL         0
+
+/*
+ * global options
+ */
+struct options
+{
+    char *filename;             /* filename of the certificate file     */
+    int debug_level;            /* level of debugging                   */
+} opt;
+
+void my_debug( void *ctx, int level, const char *str )
+{
+    if( level < opt.debug_level )
+    {
+        fprintf( (FILE *) ctx, "%s", str );
+        fflush(  (FILE *) ctx  );
+    }
+}
+
+#define USAGE \
+    "\n usage: crl_app param=<>...\n"                   \
+    "\n acceptable parameters:\n"                       \
+    "    filename=%%s         default: cert.crt\n"      \
+    "    debug_level=%%d      default: 0 (disabled)\n"  \
+    "\n"
+
+int main( int argc, char *argv[] )
+{
+    int ret = 0;
+    unsigned char buf[1024];
+    x509_crl crl;
+    int i, j, n;
+    char *p, *q;
+
+    /*
+     * Set to sane values
+     */
+    memset( &crl, 0, sizeof( x509_crl ) );
+
+    if( argc == 0 )
+    {
+    usage:
+        printf( USAGE );
+        goto exit;
+    }
+
+    opt.filename            = DFL_FILENAME;
+    opt.debug_level         = DFL_DEBUG_LEVEL;
+
+    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 if( strcmp( p, "debug_level" ) == 0 )
+        {
+            opt.debug_level = atoi( q );
+            if( opt.debug_level < 0 || opt.debug_level > 65535 )
+                goto usage;
+        }
+        else
+            goto usage;
+    }
+
+    /*
+     * 1.1. Load the CRL
+     */
+    printf( "\n  . Loading the CRL ..." );
+    fflush( stdout );
+
+    ret = x509parse_crlfile( &crl, opt.filename );
+
+    if( ret != 0 )
+    {
+        printf( " failed\n  !  x509parse_crl returned %d\n\n", ret );
+        x509_crl_free( &crl );
+        goto exit;
+    }
+
+    printf( " ok\n" );
+
+    /*
+     * 1.2 Print the CRL
+     */
+    printf( "  . CRL information    ...\n" );
+    ret = x509parse_crl_info( (char *) buf, sizeof( buf ) - 1, "      ", &crl );
+    if( ret == -1 )
+    {
+        printf( " failed\n  !  x509parse_crl_info returned %d\n\n", ret );
+        x509_crl_free( &crl );
+        goto exit;
+    }
+
+    printf( "%s\n", buf );
+
+exit:
+    x509_crl_free( &crl );
+
+#ifdef WIN32
+    printf( "  + Press Enter to exit this program.\n" );
+    fflush( stdout ); getchar();
+#endif
+
+    return( ret );
+}