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18b78c7498
mbedtls/programs/x509/cert_app.c
Rich Evans 18b78c7498 cleanup programs 
Clean up the contents of programs, add more guards to includes, move all
defines to the top of the top of files, remove some unused includes
2015-02-13 13:50:05 +00:00

522 lines
16 KiB
C
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/*
* Certificate reading application
*
* Copyright (C) 2006-2013, ARM Limited, All Rights Reserved
*
* This file is part of mbed TLS (https://polarssl.org)
*
* 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(POLARSSL_CONFIG_FILE)
#include "polarssl/config.h"
#else
#include POLARSSL_CONFIG_FILE
#endif
#if defined(POLARSSL_PLATFORM_C)
#include "polarssl/platform.h"
#else
#include <stdio.h>
#define polarssl_fprintf fprintf
#define polarssl_printf printf
#endif
#if defined(POLARSSL_BIGNUM_C) && defined(POLARSSL_ENTROPY_C) &&\
defined(POLARSSL_SSL_TLS_C) && defined(POLARSSL_SSL_CLI_C) &&\
defined(POLARSSL_NET_C) && defined(POLARSSL_RSA_C) &&\
defined(POLARSSL_X509_CRT_PARSE_C) && defined(POLARSSL_FS_IO) &&\
defined(POLARSSL_CTR_DRBG_C)
#include "polarssl/entropy.h"
#include "polarssl/ctr_drbg.h"
#include "polarssl/net.h"
#include "polarssl/ssl.h"
#include "polarssl/x509.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#endif
#define MODE_NONE 0
#define MODE_FILE 1
#define MODE_SSL 2
#define DFL_MODE MODE_NONE
#define DFL_FILENAME "cert.crt"
#define DFL_CA_FILE ""
#define DFL_CRL_FILE ""
#define DFL_CA_PATH ""
#define DFL_SERVER_NAME "localhost"
#define DFL_SERVER_PORT 4433
#define DFL_DEBUG_LEVEL 0
#define DFL_PERMISSIVE 0
#if !defined(POLARSSL_BIGNUM_C) || !defined(POLARSSL_ENTROPY_C) || \
!defined(POLARSSL_SSL_TLS_C) || !defined(POLARSSL_SSL_CLI_C) || \
!defined(POLARSSL_NET_C) || !defined(POLARSSL_RSA_C) || \
!defined(POLARSSL_X509_CRT_PARSE_C) || !defined(POLARSSL_FS_IO) || \
!defined(POLARSSL_CTR_DRBG_C)
int main( int argc, char *argv[] )
{
((void) argc);
((void) argv);
polarssl_printf("POLARSSL_BIGNUM_C and/or POLARSSL_ENTROPY_C and/or "
"POLARSSL_SSL_TLS_C and/or POLARSSL_SSL_CLI_C and/or "
"POLARSSL_NET_C and/or POLARSSL_RSA_C and/or "
"POLARSSL_X509_CRT_PARSE_C and/or POLARSSL_FS_IO and/or "
"POLARSSL_CTR_DRBG_C not defined.\n");
return( 0 );
}
#else
/*
* global options
*/
struct options
{
int mode; /* the mode to run the application in */
const char *filename; /* filename of the certificate file */
const char *ca_file; /* the file with the CA certificate(s) */
const char *crl_file; /* the file with the CRL to use */
const char *ca_path; /* the path with the CA certificate(s) reside */
const char *server_name; /* hostname of the server (client only) */
int server_port; /* port on which the ssl service runs */
int debug_level; /* level of debugging */
int permissive; /* permissive parsing */
} opt;
static void my_debug( void *ctx, int level, const char *str )
{
if( level < opt.debug_level )
{
polarssl_fprintf( (FILE *) ctx, "%s", str );
fflush( (FILE *) ctx );
}
}
static int my_verify( void *data, x509_crt *crt, int depth, int *flags )
{
char buf[1024];
((void) data);
polarssl_printf( "\nVerify requested for (Depth %d):\n", depth );
x509_crt_info( buf, sizeof( buf ) - 1, "", crt );
polarssl_printf( "%s", buf );
if( ( (*flags) & BADCERT_EXPIRED ) != 0 )
polarssl_printf( " ! server certificate has expired\n" );
if( ( (*flags) & BADCERT_REVOKED ) != 0 )
polarssl_printf( " ! server certificate has been revoked\n" );
if( ( (*flags) & BADCERT_CN_MISMATCH ) != 0 )
polarssl_printf( " ! CN mismatch\n" );
if( ( (*flags) & BADCERT_NOT_TRUSTED ) != 0 )
polarssl_printf( " ! self-signed or not signed by a trusted CA\n" );
if( ( (*flags) & BADCRL_NOT_TRUSTED ) != 0 )
polarssl_printf( " ! CRL not trusted\n" );
if( ( (*flags) & BADCRL_EXPIRED ) != 0 )
polarssl_printf( " ! CRL expired\n" );
if( ( (*flags) & BADCERT_OTHER ) != 0 )
polarssl_printf( " ! other (unknown) flag\n" );
if ( ( *flags ) == 0 )
polarssl_printf( " This certificate has no flags\n" );
return( 0 );
}
#define USAGE_IO \
" ca_file=%%s The single file containing the top-level CA(s) you fully trust\n" \
" default: \"\" (none)\n" \
" crl_file=%%s The single CRL file you want to use\n" \
" default: \"\" (none)\n" \
" ca_path=%%s The path containing the top-level CA(s) you fully trust\n" \
" default: \"\" (none) (overrides ca_file)\n"
#define USAGE \
"\n usage: cert_app param=<>...\n" \
"\n acceptable parameters:\n" \
" mode=file|ssl default: none\n" \
" filename=%%s default: cert.crt\n" \
USAGE_IO \
" server_name=%%s default: localhost\n" \
" server_port=%%d default: 4433\n" \
" debug_level=%%d default: 0 (disabled)\n" \
" permissive=%%d default: 0 (disabled)\n" \
"\n"
int main( int argc, char *argv[] )
{
int ret = 0, server_fd;
unsigned char buf[1024];
entropy_context entropy;
ctr_drbg_context ctr_drbg;
ssl_context ssl;
x509_crt cacert;
x509_crt clicert;
x509_crl cacrl;
pk_context pkey;
int i, j;
int flags, verify = 0;
char *p, *q;
const char *pers = "cert_app";
/*
* Set to sane values
*/
server_fd = 0;
x509_crt_init( &cacert );
x509_crt_init( &clicert );
#if defined(POLARSSL_X509_CRL_PARSE_C)
x509_crl_init( &cacrl );
#else
/* Zeroize structure as CRL parsing is not supported and we have to pass
it to the verify function */
memset( &cacrl, 0, sizeof(x509_crl) );
#endif
pk_init( &pkey );
if( argc == 0 )
{
usage:
polarssl_printf( USAGE );
ret = 2;
goto exit;
}
opt.mode = DFL_MODE;
opt.filename = DFL_FILENAME;
opt.ca_file = DFL_CA_FILE;
opt.crl_file = DFL_CRL_FILE;
opt.ca_path = DFL_CA_PATH;
opt.server_name = DFL_SERVER_NAME;
opt.server_port = DFL_SERVER_PORT;
opt.debug_level = DFL_DEBUG_LEVEL;
opt.permissive = DFL_PERMISSIVE;
for( i = 1; i < argc; i++ )
{
p = argv[i];
if( ( q = strchr( p, '=' ) ) == NULL )
goto usage;
*q++ = '\0';
for( j = 0; p + j < q; j++ )
{
if( argv[i][j] >= 'A' && argv[i][j] <= 'Z' )
argv[i][j] |= 0x20;
}
if( strcmp( p, "mode" ) == 0 )
{
if( strcmp( q, "file" ) == 0 )
opt.mode = MODE_FILE;
else if( strcmp( q, "ssl" ) == 0 )
opt.mode = MODE_SSL;
else
goto usage;
}
else if( strcmp( p, "filename" ) == 0 )
opt.filename = q;
else if( strcmp( p, "ca_file" ) == 0 )
opt.ca_file = q;
else if( strcmp( p, "crl_file" ) == 0 )
opt.crl_file = q;
else if( strcmp( p, "ca_path" ) == 0 )
opt.ca_path = q;
else if( strcmp( p, "server_name" ) == 0 )
opt.server_name = q;
else if( strcmp( p, "server_port" ) == 0 )
{
opt.server_port = atoi( q );
if( opt.server_port < 1 || opt.server_port > 65535 )
goto usage;
}
else if( strcmp( p, "debug_level" ) == 0 )
{
opt.debug_level = atoi( q );
if( opt.debug_level < 0 || opt.debug_level > 65535 )
goto usage;
}
else if( strcmp( p, "permissive" ) == 0 )
{
opt.permissive = atoi( q );
if( opt.permissive < 0 || opt.permissive > 1 )
goto usage;
}
else
goto usage;
}
/*
* 1.1. Load the trusted CA
*/
polarssl_printf( " . Loading the CA root certificate ..." );
fflush( stdout );
if( strlen( opt.ca_path ) )
{
ret = x509_crt_parse_path( &cacert, opt.ca_path );
verify = 1;
}
else if( strlen( opt.ca_file ) )
{
ret = x509_crt_parse_file( &cacert, opt.ca_file );
verify = 1;
}
if( ret < 0 )
{
polarssl_printf( " failed\n ! x509_crt_parse returned -0x%x\n\n", -ret );
goto exit;
}
polarssl_printf( " ok (%d skipped)\n", ret );
#if defined(POLARSSL_X509_CRL_PARSE_C)
if( strlen( opt.crl_file ) )
{
if( ( ret = x509_crl_parse_file( &cacrl, opt.crl_file ) ) != 0 )
{
polarssl_printf( " failed\n ! x509_crl_parse returned -0x%x\n\n", -ret );
goto exit;
}
verify = 1;
}
#endif
if( opt.mode == MODE_FILE )
{
x509_crt crt;
x509_crt *cur = &crt;
x509_crt_init( &crt );
/*
* 1.1. Load the certificate(s)
*/
polarssl_printf( "\n . Loading the certificate(s) ..." );
fflush( stdout );
ret = x509_crt_parse_file( &crt, opt.filename );
if( ret < 0 )
{
polarssl_printf( " failed\n ! x509_crt_parse_file returned %d\n\n", ret );
x509_crt_free( &crt );
goto exit;
}
if( opt.permissive == 0 && ret > 0 )
{
polarssl_printf( " failed\n ! x509_crt_parse failed to parse %d certificates\n\n", ret );
x509_crt_free( &crt );
goto exit;
}
polarssl_printf( " ok\n" );
/*
* 1.2 Print the certificate(s)
*/
while( cur != NULL )
{
polarssl_printf( " . Peer certificate information ...\n" );
ret = x509_crt_info( (char *) buf, sizeof( buf ) - 1, " ",
cur );
if( ret == -1 )
{
polarssl_printf( " failed\n ! x509_crt_info returned %d\n\n", ret );
x509_crt_free( &crt );
goto exit;
}
polarssl_printf( "%s\n", buf );
cur = cur->next;
}
/*
* 1.3 Verify the certificate
*/
if( verify )
{
polarssl_printf( " . Verifying X.509 certificate..." );
if( ( ret = x509_crt_verify( &crt, &cacert, &cacrl, NULL, &flags,
my_verify, NULL ) ) != 0 )
{
polarssl_printf( " failed\n" );
if( ( ret & BADCERT_EXPIRED ) != 0 )
polarssl_printf( " ! server certificate has expired\n" );
if( ( ret & BADCERT_REVOKED ) != 0 )
polarssl_printf( " ! server certificate has been revoked\n" );
if( ( ret & BADCERT_CN_MISMATCH ) != 0 )
polarssl_printf( " ! CN mismatch (expected CN=%s)\n", opt.server_name );
if( ( ret & BADCERT_NOT_TRUSTED ) != 0 )
polarssl_printf( " ! self-signed or not signed by a trusted CA\n" );
polarssl_printf( "\n" );
}
else
polarssl_printf( " ok\n" );
}
x509_crt_free( &crt );
}
else if( opt.mode == MODE_SSL )
{
/*
* 1. Initialize the RNG and the session data
*/
polarssl_printf( "\n . Seeding the random number generator..." );
fflush( stdout );
entropy_init( &entropy );
if( ( ret = ctr_drbg_init( &ctr_drbg, entropy_func, &entropy,
(const unsigned char *) pers,
strlen( pers ) ) ) != 0 )
{
polarssl_printf( " failed\n ! ctr_drbg_init returned %d\n", ret );
goto exit;
}
polarssl_printf( " ok\n" );
/*
* 2. Start the connection
*/
polarssl_printf( " . SSL connection to tcp/%s/%-4d...", opt.server_name,
opt.server_port );
fflush( stdout );
if( ( ret = net_connect( &server_fd, opt.server_name,
opt.server_port ) ) != 0 )
{
polarssl_printf( " failed\n ! net_connect returned %d\n\n", ret );
goto exit;
}
/*
* 3. Setup stuff
*/
if( ( ret = ssl_init( &ssl ) ) != 0 )
{
polarssl_printf( " failed\n ! ssl_init returned %d\n\n", ret );
goto exit;
}
ssl_set_endpoint( &ssl, SSL_IS_CLIENT );
if( verify )
{
ssl_set_authmode( &ssl, SSL_VERIFY_REQUIRED );
ssl_set_ca_chain( &ssl, &cacert, NULL, opt.server_name );
ssl_set_verify( &ssl, my_verify, NULL );
}
else
ssl_set_authmode( &ssl, SSL_VERIFY_NONE );
ssl_set_rng( &ssl, ctr_drbg_random, &ctr_drbg );
ssl_set_dbg( &ssl, my_debug, stdout );
ssl_set_bio( &ssl, net_recv, &server_fd,
net_send, &server_fd );
if( ( ret = ssl_set_own_cert( &ssl, &clicert, &pkey ) ) != 0 )
{
polarssl_printf( " failed\n ! ssl_set_own_cert returned %d\n\n", ret );
goto exit;
}
#if defined(POLARSSL_SSL_SERVER_NAME_INDICATION)
if( ( ret = ssl_set_hostname( &ssl, opt.server_name ) ) != 0 )
{
polarssl_printf( " failed\n ! ssl_set_hostname returned %d\n\n", ret );
goto exit;
}
#endif
/*
* 4. Handshake
*/
while( ( ret = ssl_handshake( &ssl ) ) != 0 )
{
if( ret != POLARSSL_ERR_NET_WANT_READ && ret != POLARSSL_ERR_NET_WANT_WRITE )
{
polarssl_printf( " failed\n ! ssl_handshake returned %d\n\n", ret );
ssl_free( &ssl );
goto exit;
}
}
polarssl_printf( " ok\n" );
/*
* 5. Print the certificate
*/
polarssl_printf( " . Peer certificate information ...\n" );
ret = x509_crt_info( (char *) buf, sizeof( buf ) - 1, " ",
ssl.session->peer_cert );
if( ret == -1 )
{
polarssl_printf( " failed\n ! x509_crt_info returned %d\n\n", ret );
ssl_free( &ssl );
goto exit;
}
polarssl_printf( "%s\n", buf );
ssl_close_notify( &ssl );
ssl_free( &ssl );
}
else
goto usage;
exit:
if( server_fd )
net_close( server_fd );
x509_crt_free( &cacert );
x509_crt_free( &clicert );
#if defined(POLARSSL_X509_CRL_PARSE_C)
x509_crl_free( &cacrl );
#endif
pk_free( &pkey );
ctr_drbg_free( &ctr_drbg );
entropy_free( &entropy );
#if defined(_WIN32)
polarssl_printf( " + Press Enter to exit this program.\n" );
fflush( stdout ); getchar();
#endif
if( ret < 0 )
ret = 1;
return( ret );
}
#endif /* POLARSSL_BIGNUM_C && POLARSSL_ENTROPY_C && POLARSSL_SSL_TLS_C &&
POLARSSL_SSL_CLI_C && POLARSSL_NET_C && POLARSSL_RSA_C &&
POLARSSL_X509_CRT_PARSE_C && POLARSSL_FS_IO && POLARSSL_CTR_DRBG_C */
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