/*
* SSL client with certificate authentication
*
* Copyright (C) 2006-2015, ARM Limited, All Rights Reserved
* 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.
*
* This file is part of mbed TLS (https://tls.mbed.org)
*/
#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_time time
#define mbedtls_time_t time_t
#define mbedtls_printf printf
#define mbedtls_fprintf fprintf
#define mbedtls_snprintf snprintf
#define mbedtls_exit exit
#define mbedtls_calloc calloc
#define mbedtls_free free
#define MBEDTLS_EXIT_SUCCESS EXIT_SUCCESS
#define MBEDTLS_EXIT_FAILURE EXIT_FAILURE
#endif
#if !defined(MBEDTLS_ENTROPY_C) || \
!defined(MBEDTLS_SSL_TLS_C) || \
!defined(MBEDTLS_SSL_CLI_C) || \
!defined(MBEDTLS_NET_C) || \
!( defined(MBEDTLS_CTR_DRBG_C) || defined(MBEDTLS_HMAC_DRBG_C) )
int main( void )
{
mbedtls_printf("MBEDTLS_ENTROPY_C and/or "
"MBEDTLS_SSL_TLS_C and/or MBEDTLS_SSL_CLI_C and/or "
"MBEDTLS_NET_C not defined, or "
"neither MBEDTLS_CTR_DRBG_C nor MBEDTLS_HMAC_DRBG_C defined.\n");
mbedtls_exit( 0 );
}
#else
#include "mbedtls/net_sockets.h"
#include "mbedtls/ssl.h"
#include "mbedtls/ssl_ciphersuites.h"
#include "mbedtls/entropy.h"
#include "mbedtls/ctr_drbg.h"
#include "mbedtls/hmac_drbg.h"
#include "mbedtls/certs.h"
#include "mbedtls/x509.h"
#include "mbedtls/error.h"
#include "mbedtls/debug.h"
#include "mbedtls/timing.h"
#include "mbedtls/ssl_internal.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#define MAX_REQUEST_SIZE 20000
#define MAX_REQUEST_SIZE_STR "20000"
#define DFL_SERVER_NAME "localhost"
#define DFL_SERVER_ADDR NULL
#define DFL_SERVER_PORT "4433"
#define DFL_REQUEST_PAGE "/"
#define DFL_REQUEST_SIZE -1
#define DFL_DEBUG_LEVEL 0
#define DFL_NBIO 0
#define DFL_EVENT 0
#define DFL_READ_TIMEOUT 0
#define DFL_MAX_RESEND 0
#define DFL_CA_FILE ""
#define DFL_CA_PATH ""
#define DFL_CRT_FILE ""
#define DFL_KEY_FILE ""
#define DFL_PSK ""
#define DFL_PSK_IDENTITY "Client_identity"
#define DFL_ECJPAKE_PW NULL
#define DFL_EC_MAX_OPS -1
#define DFL_FORCE_CIPHER 0
#define DFL_RENEGOTIATION MBEDTLS_SSL_RENEGOTIATION_DISABLED
#define DFL_ALLOW_LEGACY -2
#define DFL_RENEGOTIATE 0
#define DFL_EXCHANGES 1
#define DFL_MIN_VERSION -1
#define DFL_MAX_VERSION -1
#define DFL_ARC4 -1
#define DFL_SHA1 -1
#define DFL_AUTH_MODE -1
#define DFL_MFL_CODE MBEDTLS_SSL_MAX_FRAG_LEN_NONE
#define DFL_TRUNC_HMAC -1
#define DFL_RECSPLIT -1
#define DFL_DHMLEN -1
#define DFL_RECONNECT 0
#define DFL_RECO_DELAY 0
#define DFL_RECO_MODE 1
#define DFL_CID_ENABLED 0
#define DFL_CID_VALUE ""
#define DFL_CID_ENABLED_RENEGO -1
#define DFL_CID_VALUE_RENEGO NULL
#define DFL_RECONNECT_HARD 0
#define DFL_TICKETS MBEDTLS_SSL_SESSION_TICKETS_ENABLED
#define DFL_ALPN_STRING NULL
#define DFL_CURVES NULL
#define DFL_TRANSPORT MBEDTLS_SSL_TRANSPORT_STREAM
#define DFL_HS_TO_MIN 0
#define DFL_HS_TO_MAX 0
#define DFL_DTLS_MTU -1
#define DFL_DGRAM_PACKING 1
#define DFL_FALLBACK -1
#define DFL_EXTENDED_MS -1
#define DFL_ETM -1
#define DFL_SERIALIZE 0
#define DFL_EXTENDED_MS_ENFORCE -1
#define DFL_SKIP_CLOSE_NOTIFY 0
#define GET_REQUEST "GET %s HTTP/1.0\r\nExtra-header: "
#define GET_REQUEST_END "\r\n\r\n"
#if defined(MBEDTLS_X509_CRT_PARSE_C)
#if defined(MBEDTLS_FS_IO)
#define USAGE_IO \
" ca_file=%%s The single file containing the top-level CA(s) you fully trust\n" \
" default: \"\" (pre-loaded)\n" \
" use \"none\" to skip loading any top-level CAs.\n" \
" ca_path=%%s The path containing the top-level CA(s) you fully trust\n" \
" default: \"\" (pre-loaded) (overrides ca_file)\n" \
" use \"none\" to skip loading any top-level CAs.\n" \
" crt_file=%%s Your own cert and chain (in bottom to top order, top may be omitted)\n" \
" default: \"\" (pre-loaded)\n" \
" key_file=%%s default: \"\" (pre-loaded)\n"
#else
#define USAGE_IO \
" No file operations available (MBEDTLS_FS_IO not defined)\n"
#endif /* MBEDTLS_FS_IO */
#else
#define USAGE_IO ""
#endif /* MBEDTLS_X509_CRT_PARSE_C */
#if defined(MBEDTLS_SSL_DTLS_CONNECTION_ID)
#define USAGE_CID \
" cid=%%d Disable (0) or enable (1) the use of the DTLS Connection ID extension.\n" \
" default: 0 (disabled)\n" \
" cid_renego=%%d Disable (0) or enable (1) the use of the DTLS Connection ID extension during renegotiation.\n" \
" default: same as 'cid' parameter\n" \
" cid_val=%%s The CID to use for incoming messages (in hex, without 0x).\n" \
" default: \"\"\n" \
" cid_val_renego=%%s The CID to use for incoming messages (in hex, without 0x) after renegotiation.\n" \
" default: same as 'cid_val' parameter\n"
#else /* MBEDTLS_SSL_DTLS_CONNECTION_ID */
#define USAGE_CID ""
#endif /* MBEDTLS_SSL_DTLS_CONNECTION_ID */
#if defined(MBEDTLS_KEY_EXCHANGE__SOME__PSK_ENABLED)
#define USAGE_PSK \
" psk=%%s default: \"\" (in hex, without 0x)\n" \
" psk_identity=%%s default: \"Client_identity\"\n"
#else
#define USAGE_PSK ""
#endif /* MBEDTLS_KEY_EXCHANGE__SOME__PSK_ENABLED */
#if defined(MBEDTLS_SSL_SESSION_TICKETS)
#define USAGE_TICKETS \
" tickets=%%d default: 1 (enabled)\n"
#else
#define USAGE_TICKETS ""
#endif /* MBEDTLS_SSL_SESSION_TICKETS */
#if defined(MBEDTLS_SSL_TRUNCATED_HMAC)
#define USAGE_TRUNC_HMAC \
" trunc_hmac=%%d default: library default\n"
#else
#define USAGE_TRUNC_HMAC ""
#endif /* MBEDTLS_SSL_TRUNCATED_HMAC */
#if defined(MBEDTLS_SSL_MAX_FRAGMENT_LENGTH)
#define USAGE_MAX_FRAG_LEN \
" max_frag_len=%%d default: 16384 (tls default)\n" \
" options: 512, 1024, 2048, 4096\n"
#else
#define USAGE_MAX_FRAG_LEN ""
#endif /* MBEDTLS_SSL_MAX_FRAGMENT_LENGTH */
#if defined(MBEDTLS_SSL_CBC_RECORD_SPLITTING)
#define USAGE_RECSPLIT \
" recsplit=0/1 default: (library default: on)\n"
#else
#define USAGE_RECSPLIT
#endif
#if defined(MBEDTLS_DHM_C)
#define USAGE_DHMLEN \
" dhmlen=%%d default: (library default: 1024 bits)\n"
#else
#define USAGE_DHMLEN
#endif
#if defined(MBEDTLS_SSL_ALPN)
#define USAGE_ALPN \
" alpn=%%s default: \"\" (disabled)\n" \
" example: spdy/1,http/1.1\n"
#else
#define USAGE_ALPN ""
#endif /* MBEDTLS_SSL_ALPN */
#if defined(MBEDTLS_ECP_C) && !defined(MBEDTLS_SSL_CONF_SINGLE_EC)
#define USAGE_CURVES \
" curves=a,b,c,d default: \"default\" (library default)\n" \
" example: \"secp521r1,brainpoolP512r1\"\n" \
" - use \"none\" for empty list\n" \
" - see mbedtls_ecp_curve_list()\n" \
" for acceptable curve names\n"
#else
#define USAGE_CURVES ""
#endif
#if defined(MBEDTLS_SSL_PROTO_DTLS)
#define USAGE_DTLS \
" dtls=%%d default: 0 (TLS) (if both enabled)\n" \
" hs_timeout=%%d-%%d default: (library default: 1000-60000)\n" \
" range of DTLS handshake timeouts in millisecs\n" \
" mtu=%%d default: (library default: unlimited)\n" \
" dgram_packing=%%d default: 1 (allowed)\n" \
" allow or forbid packing of multiple\n" \
" records within a single datgram.\n"
#else
#define USAGE_DTLS ""
#endif
#if defined(MBEDTLS_SSL_FALLBACK_SCSV)
#define USAGE_FALLBACK \
" fallback=0/1 default: (library default: off)\n"
#else
#define USAGE_FALLBACK ""
#endif
#if defined(MBEDTLS_SSL_EXTENDED_MASTER_SECRET) && \
!defined(MBEDTLS_SSL_CONF_EXTENDED_MASTER_SECRET) && \
!defined(MBEDTLS_SSL_CONF_ENFORCE_EXTENDED_MASTER_SECRET)
#define USAGE_EMS \
" extended_ms=0/1 default: (library default: on)\n" \
" enforce_extended_master_secret=0/1 default: (library default: off)\n"
#else
#define USAGE_EMS ""
#endif
#if defined(MBEDTLS_SSL_ENCRYPT_THEN_MAC)
#define USAGE_ETM \
" etm=0/1 default: (library default: on)\n"
#else
#define USAGE_ETM ""
#endif
#if defined(MBEDTLS_SSL_RENEGOTIATION)
#define USAGE_RENEGO \
" renegotiation=%%d default: 0 (disabled)\n" \
" renegotiate=%%d default: 0 (disabled)\n"
#else
#define USAGE_RENEGO ""
#endif
#if defined(MBEDTLS_KEY_EXCHANGE_ECJPAKE_ENABLED)
#define USAGE_ECJPAKE \
" ecjpake_pw=%%s default: none (disabled)\n"
#else
#define USAGE_ECJPAKE ""
#endif
#if defined(MBEDTLS_ECP_RESTARTABLE)
#define USAGE_ECRESTART \
" ec_max_ops=%%s default: library default (restart disabled)\n"
#else
#define USAGE_ECRESTART ""
#endif
#if defined(MBEDTLS_SSL_CONTEXT_SERIALIZATION)
#define USAGE_SERIALIZATION \
" serialize=%%d default: 0 (do not serialize/deserialize)\n" \
" options: 1 (serialize)\n" \
" 2 (serialize with re-initialization)\n"
#else
#define USAGE_SERIALIZATION ""
#endif
#if !defined(MBEDTLS_SSL_CONF_AUTHMODE)
#define USAGE_AUTH_MODE \
" auth_mode=%%s default: (library default: none)\n" \
" options: none, optional, required\n"
#else
#define USAGE_AUTH_MODE ""
#endif
#if !defined(MBEDTLS_SSL_CONF_ALLOW_LEGACY_RENEGOTIATION)
#define USAGE_ALLOW_LEGACY_RENEGO " allow_legacy=%%d default: (library default: no)\n"
#else
#define USAGE_ALLOW_LEGACY_RENEGO ""
#endif
#if !defined(MBEDTLS_SSL_CONF_READ_TIMEOUT)
#define USAGE_READ_TIMEOUT \
" read_timeout=%%d default: 0 ms (no timeout)\n"
#else
#define USAGE_READ_TIMEOUT ""
#endif
#if !defined(MBEDTLS_SSL_CONF_MIN_MINOR_VER) || \
!defined(MBEDTLS_SSL_CONF_MIN_MAJOR_VER) || \
!defined(MBEDTLS_SSL_CONF_MAX_MINOR_VER) || \
!defined(MBEDTLS_SSL_CONF_MAX_MAJOR_VER)
#define USAGE_MAX_VERSION " max_version=%%s default: (library default: tls1_2)\n"
#define USAGE_MIN_VERSION " min_version=%%s default: (library default: tls1)\n"
#define USAGE_FORCE_VERSION " force_version=%%s default: \"\" (none)\n" \
" options: ssl3, tls1, tls1_1, tls1_2, dtls1, dtls1_2\n"
#else
#define USAGE_MAX_VERSION ""
#define USAGE_MIN_VERSION ""
#define USAGE_FORCE_VERSION ""
#endif
/* USAGE is arbitrarily split to stay under the portable string literal
* length limit: 4095 bytes in C99. */
#define USAGE1 \
"\n usage: ssl_client2 param=<>...\n" \
"\n acceptable parameters:\n" \
" server_name=%%s default: localhost\n" \
" server_addr=%%s default: given by name\n" \
" server_port=%%d default: 4433\n" \
" request_page=%%s default: \".\"\n" \
" request_size=%%d default: about 34 (basic request)\n" \
" (minimum: 0, max: " MAX_REQUEST_SIZE_STR ")\n" \
" If 0, in the first exchange only an empty\n" \
" application data message is sent followed by\n" \
" a second non-empty message before attempting\n" \
" to read a response from the server\n" \
" debug_level=%%d default: 0 (disabled)\n" \
" nbio=%%d default: 0 (blocking I/O)\n" \
" options: 1 (non-blocking), 2 (added delays)\n" \
" event=%%d default: 0 (loop)\n" \
" options: 1 (level-triggered, implies nbio=1),\n" \
USAGE_READ_TIMEOUT \
" max_resend=%%d default: 0 (no resend on timeout)\n" \
" skip_close_notify=%%d default: 0 (send close_notify)\n" \
"\n" \
USAGE_DTLS \
USAGE_CID \
"\n"
#define USAGE2 \
USAGE_AUTH_MODE \
USAGE_IO \
"\n" \
USAGE_PSK \
USAGE_ECJPAKE \
USAGE_ECRESTART \
"\n"
#define USAGE3 \
USAGE_ALLOW_LEGACY_RENEGO \
USAGE_RENEGO \
" exchanges=%%d default: 1\n" \
" reconnect=%%d number of reconnections using session resumption\n" \
" default: 0 (disabled)\n" \
" reco_delay=%%d default: 0 seconds\n" \
" reco_mode=%%d 0: copy session, 1: serialize session\n" \
" default: 1\n" \
" reconnect_hard=%%d default: 0 (disabled)\n" \
USAGE_TICKETS \
USAGE_MAX_FRAG_LEN \
USAGE_TRUNC_HMAC \
USAGE_ALPN \
USAGE_FALLBACK \
USAGE_EMS \
USAGE_ETM \
USAGE_CURVES \
USAGE_RECSPLIT \
USAGE_DHMLEN \
"\n"
#define USAGE4 \
" arc4=%%d default: (library default: 0)\n" \
" allow_sha1=%%d default: 0\n" \
USAGE_MIN_VERSION \
USAGE_MAX_VERSION \
USAGE_FORCE_VERSION \
"\n" \
" force_ciphersuite=<name> default: all enabled\n"\
" query_config=<name> return 0 if the specified\n" \
" configuration macro is defined and 1\n" \
" otherwise. The expansion of the macro\n" \
" is printed if it is defined\n" \
USAGE_SERIALIZATION \
" acceptable ciphersuite names:\n"
#define ALPN_LIST_SIZE 10
#define CURVE_LIST_SIZE 20
/*
* global options
*/
struct options
{
const char *server_name; /* hostname of the server (client only) */
const char *server_addr; /* address of the server (client only) */
const char *server_port; /* port on which the ssl service runs */
int debug_level; /* level of debugging */
int nbio; /* should I/O be blocking? */
int event; /* loop or event-driven IO? level or edge triggered? */
uint32_t read_timeout; /* timeout on mbedtls_ssl_read() in milliseconds */
int max_resend; /* DTLS times to resend on read timeout */
const char *request_page; /* page on server to request */
int request_size; /* pad request with header to requested size */
const char *ca_file; /* the file with the CA certificate(s) */
const char *ca_path; /* the path with the CA certificate(s) reside */
const char *crt_file; /* the file with the client certificate */
const char *key_file; /* the file with the client key */
const char *psk; /* the pre-shared key */
const char *psk_identity; /* the pre-shared key identity */
const char *ecjpake_pw; /* the EC J-PAKE password */
int ec_max_ops; /* EC consecutive operations limit */
int force_ciphersuite[2]; /* protocol/ciphersuite to use, or all */
int renegotiation; /* enable / disable renegotiation */
int allow_legacy; /* allow legacy renegotiation */
int renegotiate; /* attempt renegotiation? */
int renego_delay; /* delay before enforcing renegotiation */
int exchanges; /* number of data exchanges */
int min_version; /* minimum protocol version accepted */
int max_version; /* maximum protocol version accepted */
int arc4; /* flag for arc4 suites support */
int allow_sha1; /* flag for SHA-1 support */
int auth_mode; /* verify mode for connection */
unsigned char mfl_code; /* code for maximum fragment length */
int trunc_hmac; /* negotiate truncated hmac or not */
int recsplit; /* enable record splitting? */
int dhmlen; /* minimum DHM params len in bits */
int reconnect; /* attempt to resume session */
int reco_delay; /* delay in seconds before resuming session */
int reco_mode; /* how to keep the session around */
int reconnect_hard; /* unexpectedly reconnect from the same port */
int tickets; /* enable / disable session tickets */
const char *curves; /* list of supported elliptic curves */
const char *alpn_string; /* ALPN supported protocols */
int transport; /* TLS or DTLS? */
uint32_t hs_to_min; /* Initial value of DTLS handshake timer */
uint32_t hs_to_max; /* Max value of DTLS handshake timer */
int dtls_mtu; /* UDP Maximum tranport unit for DTLS */
int fallback; /* is this a fallback connection? */
int dgram_packing; /* allow/forbid datagram packing */
int extended_ms; /* negotiate extended master secret? */
int enforce_extended_master_secret; /* Enforce the usage of extended
* master secret */
int etm; /* negotiate encrypt then mac? */
int cid_enabled; /* whether to use the CID extension or not */
int cid_enabled_renego; /* whether to use the CID extension or not
* during renegotiation */
const char *cid_val; /* the CID to use for incoming messages */
int serialize; /* serialize/deserialize connection */
const char *cid_val_renego; /* the CID to use for incoming messages
* after renegotiation */
int skip_close_notify; /* skip sending the close_notify alert */
} opt;
int query_config( const char *config );
#if defined(MBEDTLS_DEBUG_C)
static void my_debug( void *ctx, int level,
const char *file, int line,
const char *str )
{
const char *p, *basename;
/* Extract basename from file */
for( p = basename = file; *p != '\0'; p++ )
if( *p == '/' || *p == '\\' )
basename = p + 1;
mbedtls_fprintf( (FILE *) ctx, "%s:%04d: |%d| %s",
basename, line, level, str );
fflush( (FILE *) ctx );
}
#endif /* MBEDTLS_DEBUG_C */
#if !defined(MBEDTLS_SSL_CONF_RECV) && \
!defined(MBEDTLS_SSL_CONF_SEND) && \
!defined(MBEDTLS_SSL_CONF_RECV_TIMEOUT)
/*
* Test recv/send functions that make sure each try returns
* WANT_READ/WANT_WRITE at least once before sucesseding
*/
static int delayed_recv( void *ctx, unsigned char *buf, size_t len )
{
static int first_try = 1;
int ret;
if( first_try )
{
first_try = 0;
return( MBEDTLS_ERR_SSL_WANT_READ );
}
ret = mbedtls_net_recv( ctx, buf, len );
if( ret != MBEDTLS_ERR_SSL_WANT_READ )
first_try = 1; /* Next call will be a new operation */
return( ret );
}
static int delayed_send( void *ctx, const unsigned char *buf, size_t len )
{
static int first_try = 1;
int ret;
if( first_try )
{
first_try = 0;
return( MBEDTLS_ERR_SSL_WANT_WRITE );
}
ret = mbedtls_net_send( ctx, buf, len );
if( ret != MBEDTLS_ERR_SSL_WANT_WRITE )
first_try = 1; /* Next call will be a new operation */
return( ret );
}
typedef struct
{
mbedtls_ssl_context *ssl;
mbedtls_net_context *net;
} io_ctx_t;
#if defined(MBEDTLS_SSL_RECORD_CHECKING)
static int ssl_check_record( mbedtls_ssl_context const *ssl,
unsigned char const *buf, size_t len )
{
int ret;
unsigned char *tmp_buf;
tmp_buf = mbedtls_calloc( 1, len );
if( tmp_buf == NULL )
return( MBEDTLS_ERR_SSL_ALLOC_FAILED );
memcpy( tmp_buf, buf, len );
ret = mbedtls_ssl_check_record( ssl, tmp_buf, len );
if( ret != MBEDTLS_ERR_SSL_FEATURE_UNAVAILABLE )
{
int ret_repeated;
/* Test-only: Make sure that mbedtls_ssl_check_record()
* doesn't alter state. */
memcpy( tmp_buf, buf, len ); /* Restore buffer */
ret_repeated = mbedtls_ssl_check_record( ssl, tmp_buf, len );
if( ret != ret_repeated )
{
mbedtls_printf( "mbedtls_ssl_check_record() returned inconsistent results.\n" );
return( -1 );
}
switch( ret )
{
case 0:
break;
case MBEDTLS_ERR_SSL_INVALID_RECORD:
if( opt.debug_level > 1 )
mbedtls_printf( "mbedtls_ssl_check_record() detected invalid record.\n" );
break;
case MBEDTLS_ERR_SSL_INVALID_MAC:
if( opt.debug_level > 1 )
mbedtls_printf( "mbedtls_ssl_check_record() detected unauthentic record.\n" );
break;
case MBEDTLS_ERR_SSL_UNEXPECTED_RECORD:
if( opt.debug_level > 1 )
mbedtls_printf( "mbedtls_ssl_check_record() detected unexpected record.\n" );
break;
default:
mbedtls_printf( "mbedtls_ssl_check_record() failed fatally with -%#04x.\n", -ret );
return( -1 );
}
/* Regardless of the outcome, forward the record to the stack. */
}
mbedtls_free( tmp_buf );
return( 0 );
}
#endif /* MBEDTLS_SSL_RECORD_CHECKING */
static int recv_cb( void *ctx, unsigned char *buf, size_t len )
{
io_ctx_t *io_ctx = (io_ctx_t*) ctx;
size_t recv_len;
int ret;
if( opt.nbio == 2 )
ret = delayed_recv( io_ctx->net, buf, len );
else
ret = mbedtls_net_recv( io_ctx->net, buf, len );
if( ret < 0 )
return( ret );
recv_len = (size_t) ret;
if( opt.transport == MBEDTLS_SSL_TRANSPORT_DATAGRAM )
{
/* Here's the place to do any datagram/record checking
* in between receiving the packet from the underlying
* transport and passing it on to the TLS stack. */
#if defined(MBEDTLS_SSL_RECORD_CHECKING)
if( ssl_check_record( io_ctx->ssl, buf, recv_len ) != 0 )
return( -1 );
#endif /* MBEDTLS_SSL_RECORD_CHECKING */
}
return( (int) recv_len );
}
static int recv_timeout_cb( void *ctx, unsigned char *buf, size_t len,
uint32_t timeout )
{
io_ctx_t *io_ctx = (io_ctx_t*) ctx;
int ret;
size_t recv_len;
ret = mbedtls_net_recv_timeout( io_ctx->net, buf, len, timeout );
if( ret < 0 )
return( ret );
recv_len = (size_t) ret;
if( opt.transport == MBEDTLS_SSL_TRANSPORT_DATAGRAM )
{
/* Here's the place to do any datagram/record checking
* in between receiving the packet from the underlying
* transport and passing it on to the TLS stack. */
#if defined(MBEDTLS_SSL_RECORD_CHECKING)
if( ssl_check_record( io_ctx->ssl, buf, recv_len ) != 0 )
return( -1 );
#endif /* MBEDTLS_SSL_RECORD_CHECKING */
}
return( (int) recv_len );
}
static int send_cb( void *ctx, unsigned char const *buf, size_t len )
{
io_ctx_t *io_ctx = (io_ctx_t*) ctx;
if( opt.nbio == 2 )
return( delayed_send( io_ctx->net, buf, len ) );
return( mbedtls_net_send( io_ctx->net, buf, len ) );
}
#endif /* !MBEDTLS_SSL_CONF_RECV &&
!MBEDTLS_SSL_CONF_SEND &&
!MBEDTLS_SSL_CONF_RECV_TIMEOUT */
#if defined(MBEDTLS_X509_CRT_PARSE_C)
#if !defined(MBEDTLS_X509_REMOVE_VERIFY_CALLBACK)
static unsigned char peer_crt_info[1024];
/*
* Enabled if debug_level > 1 in code below
*/
static int my_verify( void *data, mbedtls_x509_crt *crt,
int depth, uint32_t *flags )
{
#if !defined(MBEDTLS_X509_REMOVE_INFO)
char buf[1024];
#endif
((void) data);
#if !defined(MBEDTLS_X509_REMOVE_INFO)
mbedtls_x509_crt_info( buf, sizeof( buf ) - 1, "", crt );
if( depth == 0 )
memcpy( peer_crt_info, buf, sizeof( buf ) );
if( opt.debug_level == 0 )
return( 0 );
mbedtls_printf( "\nVerify requested for (Depth %d):\n", depth );
mbedtls_printf( "%s", buf );
#else
((void) crt);
((void) depth);
#endif
if ( ( *flags ) == 0 )
mbedtls_printf( " This certificate has no flags\n" );
else
{
#if !defined(MBEDTLS_X509_REMOVE_INFO)
mbedtls_x509_crt_verify_info( buf, sizeof( buf ), " ! ", *flags );
mbedtls_printf( "%s\n", buf );
#endif
}
return( 0 );
}
#endif /* MBEDTLS_X509_REMOVE_VERIFY_CALLBACK */
#endif /* MBEDTLS_X509_CRT_PARSE_C */
#if ( defined(MBEDTLS_X509_CRT_PARSE_C) && \
!defined(MBEDTLS_SSL_CONF_SINGLE_HASH) ) || \
!defined(MBEDTLS_CTR_DRBG_C)
static int available_hashes[] = {
#if defined(MBEDTLS_SHA512_C)
MBEDTLS_MD_SHA512,
MBEDTLS_MD_SHA384,
#endif
#if defined(MBEDTLS_SHA256_C)
MBEDTLS_MD_SHA256,
MBEDTLS_MD_SHA224,
#endif
#if defined(MBEDTLS_SHA1_C)
/* Allow SHA-1 as we use it extensively in tests. */
MBEDTLS_MD_SHA1,
#endif
MBEDTLS_MD_NONE
};
#endif /* ( MBEDTLS_X509_CRT_PARSE_C && !MBEDTLS_SSL_CONF_SINGLE_HASH ) ||
!MBEDTLS_CTR_DRBG_C */
/*
* Wait for an event from the underlying transport or the timer
* (Used in event-driven IO mode).
*/
#if !defined(MBEDTLS_TIMING_C)
int idle( mbedtls_net_context *fd,
int idle_reason )
#else
int idle( mbedtls_net_context *fd,
mbedtls_timing_delay_context *timer,
int idle_reason )
#endif
{
int ret;
int poll_type = 0;
if( idle_reason == MBEDTLS_ERR_SSL_WANT_WRITE )
poll_type = MBEDTLS_NET_POLL_WRITE;
else if( idle_reason == MBEDTLS_ERR_SSL_WANT_READ )
poll_type = MBEDTLS_NET_POLL_READ;
#if !defined(MBEDTLS_TIMING_C)
else
return( 0 );
#endif
while( 1 )
{
/* Check if timer has expired */
#if defined(MBEDTLS_TIMING_C)
if( timer != NULL &&
mbedtls_timing_get_delay( timer ) == 2 )
{
break;
}
#endif /* MBEDTLS_TIMING_C */
/* Check if underlying transport became available */
if( poll_type != 0 )
{
ret = mbedtls_net_poll( fd, poll_type, 0 );
if( ret < 0 )
return( ret );
if( ret == poll_type )
break;
}
}
return( 0 );
}
/* Unhexify `hex` into `dst`. `dst` must have
* size at least `strlen( hex ) / 2`. */
int unhexify( char const *hex, unsigned char *dst )
{
unsigned char c;
size_t j;
size_t len = strlen( hex );
if( len % 2 != 0 )
return( -1 );
for( j = 0; j < len; j += 2 )
{
c = hex[j];
if( c >= '0' && c <= '9' )
c -= '0';
else if( c >= 'a' && c <= 'f' )
c -= 'a' - 10;
else if( c >= 'A' && c <= 'F' )
c -= 'A' - 10;
else
return( -1 );
dst[ j / 2 ] = c << 4;
c = hex[j + 1];
if( c >= '0' && c <= '9' )
c -= '0';
else if( c >= 'a' && c <= 'f' )
c -= 'a' - 10;
else if( c >= 'A' && c <= 'F' )
c -= 'A' - 10;
else
return( -1 );
dst[ j / 2 ] |= c;
}
return( 0 );
}
#if defined(MBEDTLS_SSL_DTLS_CONNECTION_ID)
int report_cid_usage( mbedtls_ssl_context *ssl,
const char *additional_description )
{
int ret;
unsigned char peer_cid[ MBEDTLS_SSL_CID_OUT_LEN_MAX ];
size_t peer_cid_len;
int cid_negotiated;
if( opt.transport != MBEDTLS_SSL_TRANSPORT_DATAGRAM )
return( 0 );
/* Check if the use of a CID has been negotiated,
* but don't ask for the CID value and length.
*
* Note: Here and below, we're demonstrating the various ways
* in which mbedtls_ssl_get_peer_cid() can be called,
* depending on whether or not the length/value of the
* peer's CID is needed.
*
* An actual application, however, should use
* just one call to mbedtls_ssl_get_peer_cid(). */
ret = mbedtls_ssl_get_peer_cid( ssl, &cid_negotiated,
NULL, NULL );
if( ret != 0 )
{
mbedtls_printf( " failed\n ! mbedtls_ssl_get_peer_cid returned -0x%x\n\n",
-ret );
return( ret );
}
if( cid_negotiated == MBEDTLS_SSL_CID_DISABLED )
{
if( opt.cid_enabled == MBEDTLS_SSL_CID_ENABLED )
{
mbedtls_printf( "(%s) Use of Connection ID was rejected by the server.\n",
additional_description );
}
}
else
{
size_t idx=0;
mbedtls_printf( "(%s) Use of Connection ID has been negotiated.\n",
additional_description );
/* Ask for just the length of the peer's CID. */
ret = mbedtls_ssl_get_peer_cid( ssl, &cid_negotiated,
NULL, &peer_cid_len );
if( ret != 0 )
{
mbedtls_printf( " failed\n ! mbedtls_ssl_get_peer_cid returned -0x%x\n\n",
-ret );
return( ret );
}
/* Ask for just length + value of the peer's CID. */
ret = mbedtls_ssl_get_peer_cid( ssl, &cid_negotiated,
peer_cid, &peer_cid_len );
if( ret != 0 )
{
mbedtls_printf( " failed\n ! mbedtls_ssl_get_peer_cid returned -0x%x\n\n",
-ret );
return( ret );
}
mbedtls_printf( "(%s) Peer CID (length %u Bytes): ",
additional_description,
(unsigned) peer_cid_len );
while( idx < peer_cid_len )
{
mbedtls_printf( "%02x ", peer_cid[ idx ] );
idx++;
}
mbedtls_printf( "\n" );
}
return( 0 );
}
#endif /* MBEDTLS_SSL_DTLS_CONNECTION_ID */
#if defined(MBEDTLS_SSL_CONF_RNG)
int rng_wrap( void *ctx, unsigned char *dst, size_t len );
#if defined(MBEDTLS_CTR_DRBG_C)
mbedtls_ctr_drbg_context *rng_ctx_global = NULL;
#else
mbedtls_hmac_drbg_context *rng_ctx_global = NULL;
#endif /* MBEDTLS_CTR_DRBG_C */
int rng_wrap( void *ctx, unsigned char *dst, size_t len )
{
/* We expect the NULL parameter here. */
if( ctx != NULL )
return( -1 );
#if defined(MBEDTLS_CTR_DRBG_C)
return( mbedtls_ctr_drbg_random( rng_ctx_global, dst, len ) );
#else
return( mbedtls_hmac_drbg_random( rng_ctx_global, dst, len ) );
#endif
}
#endif /* MBEDTLS_SSL_CONF_RNG */
#if defined(MBEDTLS_ENTROPY_HARDWARE_ALT)
int mbedtls_hardware_poll( void *data, unsigned char *output,
size_t len, size_t *olen )
{
size_t i;
(void) data;
for( i = 0; i < len; ++i )
output[i] = rand();
*olen = len;
return( 0 );
}
#endif
int main( int argc, char *argv[] )
{
int ret = 0, len, tail_len, i, written, frags, retry_left;
mbedtls_net_context server_fd;
#if !defined(MBEDTLS_SSL_CONF_RECV) && \
!defined(MBEDTLS_SSL_CONF_SEND) && \
!defined(MBEDTLS_SSL_CONF_RECV_TIMEOUT)
io_ctx_t io_ctx;
#endif
unsigned char *buf = NULL;
unsigned int main_buf_len = 0;
#if defined(MBEDTLS_KEY_EXCHANGE__SOME__PSK_ENABLED)
unsigned char psk[MBEDTLS_PSK_MAX_LEN];
size_t psk_len = 0;
#endif
#if defined(MBEDTLS_SSL_DTLS_CONNECTION_ID)
unsigned char cid[MBEDTLS_SSL_CID_IN_LEN_MAX];
unsigned char cid_renego[MBEDTLS_SSL_CID_IN_LEN_MAX];
size_t cid_len = 0;
size_t cid_renego_len = 0;
#endif
#if defined(MBEDTLS_SSL_ALPN)
const char *alpn_list[ALPN_LIST_SIZE];
#endif
#if defined(MBEDTLS_ECP_C) && !defined(MBEDTLS_SSL_CONF_SINGLE_EC)
mbedtls_ecp_group_id curve_list[CURVE_LIST_SIZE];
const mbedtls_ecp_curve_info *curve_cur;
#endif
const char *pers = "ssl_client2";
#if defined(MBEDTLS_X509_CRT_PARSE_C)
mbedtls_x509_crt_profile crt_profile_for_test = mbedtls_x509_crt_profile_default;
#endif
mbedtls_entropy_context *entropy = NULL;
#if defined(MBEDTLS_CTR_DRBG_C)
mbedtls_ctr_drbg_context *ctr_drbg = NULL;
#else
mbedtls_hmac_drbg_context *hmac_drbg = NULL;
#endif
mbedtls_ssl_context *ssl;
mbedtls_ssl_config *conf;
mbedtls_ssl_session saved_session;
unsigned char *session_data = NULL;
size_t session_data_len = 0;
#if defined(MBEDTLS_TIMING_C)
mbedtls_timing_delay_context timer;
#endif
#if defined(MBEDTLS_X509_CRT_PARSE_C)
uint32_t flags;
mbedtls_x509_crt *cacert = NULL;
mbedtls_x509_crt *clicert = NULL;
mbedtls_pk_context *pkey = NULL;
#endif
char *p, *q;
const int *list;
#if defined(MBEDTLS_SSL_CONTEXT_SERIALIZATION)
unsigned char *context_buf = NULL;
size_t context_buf_len;
#endif
ssl = mbedtls_calloc( 1, sizeof( *ssl ) );
conf = mbedtls_calloc( 1, sizeof( *conf ) );
entropy = mbedtls_calloc( 1, sizeof( *entropy ) );
#if defined(MBEDTLS_CTR_DRBG_C)
ctr_drbg = mbedtls_calloc( 1, sizeof( *ctr_drbg ) );
#else
hmac_drbg = mbedtls_calloc( 1, sizeof( *hmac_drbg ) );
#endif
#if defined(MBEDTLS_X509_CRT_PARSE_C)
cacert = mbedtls_calloc( 1, sizeof( *cacert ) );
clicert = mbedtls_calloc( 1, sizeof( *clicert ) );
pkey = mbedtls_calloc( 1, sizeof( *pkey ) );
#endif
if( ssl == NULL || entropy == NULL ||
#if defined(MBEDTLS_X509_CRT_PARSE_C)
cacert == NULL ||
clicert== NULL || pkey == NULL ||
#endif
#if defined(MBEDTLS_CTR_DRBG_C)
ctr_drbg == NULL ||
#else
hmac_drbg == NULL ||
#endif
conf == NULL)
{
goto exit;
}
/*
* Make sure memory references are valid.
*/
mbedtls_net_init( &server_fd );
mbedtls_ssl_init( ssl );
mbedtls_ssl_config_init( conf );
memset( &saved_session, 0, sizeof( mbedtls_ssl_session ) );
#if defined(MBEDTLS_CTR_DRBG_C)
mbedtls_ctr_drbg_init( ctr_drbg );
#else
mbedtls_hmac_drbg_init( hmac_drbg );
#endif /* MBEDTLS_CTR_DRBG_C */
#if defined(MBEDTLS_X509_CRT_PARSE_C)
mbedtls_x509_crt_init( cacert );
mbedtls_x509_crt_init( clicert );
mbedtls_pk_init( pkey );
#endif
#if defined(MBEDTLS_SSL_ALPN)
memset( (void * ) alpn_list, 0, sizeof( alpn_list ) );
#endif
if( argc == 0 )
{
usage:
if( ret == 0 )
ret = 1;
mbedtls_printf( USAGE1 );
mbedtls_printf( USAGE2 );
mbedtls_printf( USAGE3 );
mbedtls_printf( USAGE4 );
list = mbedtls_ssl_list_ciphersuites();
while( *list )
{
mbedtls_printf(" %-42s", mbedtls_ssl_get_ciphersuite_name( *list ) );
list++;
if( !*list )
break;
mbedtls_printf(" %s\n", mbedtls_ssl_get_ciphersuite_name( *list ) );
list++;
}
mbedtls_printf("\n");
goto exit;
}
opt.server_name = DFL_SERVER_NAME;
opt.server_addr = DFL_SERVER_ADDR;
opt.server_port = DFL_SERVER_PORT;
opt.debug_level = DFL_DEBUG_LEVEL;
opt.cid_enabled = DFL_CID_ENABLED;
opt.cid_val = DFL_CID_VALUE;
opt.cid_enabled_renego = DFL_CID_ENABLED_RENEGO;
opt.cid_val_renego = DFL_CID_VALUE_RENEGO;
opt.nbio = DFL_NBIO;
opt.event = DFL_EVENT;
opt.read_timeout = DFL_READ_TIMEOUT;
opt.max_resend = DFL_MAX_RESEND;
opt.request_page = DFL_REQUEST_PAGE;
opt.request_size = DFL_REQUEST_SIZE;
opt.ca_file = DFL_CA_FILE;
opt.ca_path = DFL_CA_PATH;
opt.crt_file = DFL_CRT_FILE;
opt.key_file = DFL_KEY_FILE;
opt.psk = DFL_PSK;
opt.psk_identity = DFL_PSK_IDENTITY;
opt.ecjpake_pw = DFL_ECJPAKE_PW;
opt.ec_max_ops = DFL_EC_MAX_OPS;
opt.force_ciphersuite[0]= DFL_FORCE_CIPHER;
opt.renegotiation = DFL_RENEGOTIATION;
opt.allow_legacy = DFL_ALLOW_LEGACY;
opt.renegotiate = DFL_RENEGOTIATE;
opt.exchanges = DFL_EXCHANGES;
opt.min_version = DFL_MIN_VERSION;
opt.max_version = DFL_MAX_VERSION;
opt.arc4 = DFL_ARC4;
opt.allow_sha1 = DFL_SHA1;
opt.auth_mode = DFL_AUTH_MODE;
opt.mfl_code = DFL_MFL_CODE;
opt.trunc_hmac = DFL_TRUNC_HMAC;
opt.recsplit = DFL_RECSPLIT;
opt.dhmlen = DFL_DHMLEN;
opt.reconnect = DFL_RECONNECT;
opt.reco_delay = DFL_RECO_DELAY;
opt.reco_mode = DFL_RECO_MODE;
opt.reconnect_hard = DFL_RECONNECT_HARD;
opt.tickets = DFL_TICKETS;
opt.alpn_string = DFL_ALPN_STRING;
opt.curves = DFL_CURVES;
opt.transport = DFL_TRANSPORT;
opt.hs_to_min = DFL_HS_TO_MIN;
opt.hs_to_max = DFL_HS_TO_MAX;
opt.dtls_mtu = DFL_DTLS_MTU;
opt.fallback = DFL_FALLBACK;
opt.extended_ms = DFL_EXTENDED_MS;
opt.enforce_extended_master_secret = DFL_EXTENDED_MS_ENFORCE;
opt.etm = DFL_ETM;
opt.dgram_packing = DFL_DGRAM_PACKING;
opt.serialize = DFL_SERIALIZE;
opt.skip_close_notify = DFL_SKIP_CLOSE_NOTIFY;
for( i = 1; i < argc; i++ )
{
p = argv[i];
if( ( q = strchr( p, '=' ) ) == NULL )
goto usage;
*q++ = '\0';
if( strcmp( p, "server_name" ) == 0 )
opt.server_name = q;
else if( strcmp( p, "server_addr" ) == 0 )
opt.server_addr = q;
else if( strcmp( p, "server_port" ) == 0 )
opt.server_port = q;
else if( strcmp( p, "dtls" ) == 0 )
{
int t = atoi( q );
if( t == 0 )
opt.transport = MBEDTLS_SSL_TRANSPORT_STREAM;
else if( t == 1 )
opt.transport = MBEDTLS_SSL_TRANSPORT_DATAGRAM;
else
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, "nbio" ) == 0 )
{
opt.nbio = atoi( q );
if( opt.nbio < 0 || opt.nbio > 2 )
goto usage;
}
else if( strcmp( p, "event" ) == 0 )
{
opt.event = atoi( q );
if( opt.event < 0 || opt.event > 2 )
goto usage;
}
#if !defined(MBEDTLS_SSL_CONF_READ_TIMEOUT)
else if( strcmp( p, "read_timeout" ) == 0 )
opt.read_timeout = atoi( q );
#endif
else if( strcmp( p, "max_resend" ) == 0 )
{
opt.max_resend = atoi( q );
if( opt.max_resend < 0 )
goto usage;
}
else if( strcmp( p, "request_page" ) == 0 )
opt.request_page = q;
else if( strcmp( p, "request_size" ) == 0 )
{
opt.request_size = atoi( q );
if( opt.request_size < 0 ||
opt.request_size > MAX_REQUEST_SIZE )
goto usage;
}
else if( strcmp( p, "ca_file" ) == 0 )
opt.ca_file = q;
else if( strcmp( p, "ca_path" ) == 0 )
opt.ca_path = q;
else if( strcmp( p, "crt_file" ) == 0 )
opt.crt_file = q;
else if( strcmp( p, "key_file" ) == 0 )
opt.key_file = q;
#if defined(MBEDTLS_SSL_DTLS_CONNECTION_ID)
else if( strcmp( p, "cid" ) == 0 )
{
opt.cid_enabled = atoi( q );
if( opt.cid_enabled != 0 && opt.cid_enabled != 1 )
goto usage;
}
else if( strcmp( p, "cid_renego" ) == 0 )
{
opt.cid_enabled_renego = atoi( q );
if( opt.cid_enabled_renego != 0 && opt.cid_enabled_renego != 1 )
goto usage;
}
else if( strcmp( p, "cid_val" ) == 0 )
{
opt.cid_val = q;
}
else if( strcmp( p, "cid_val_renego" ) == 0 )
{
opt.cid_val_renego = q;
}
#endif /* MBEDTLS_SSL_DTLS_CONNECTION_ID */
else if( strcmp( p, "psk" ) == 0 )
opt.psk = q;
else if( strcmp( p, "psk_identity" ) == 0 )
opt.psk_identity = q;
else if( strcmp( p, "ecjpake_pw" ) == 0 )
opt.ecjpake_pw = q;
else if( strcmp( p, "ec_max_ops" ) == 0 )
opt.ec_max_ops = atoi( q );
else if( strcmp( p, "force_ciphersuite" ) == 0 )
{
opt.force_ciphersuite[0] = mbedtls_ssl_get_ciphersuite_id( q );
if( opt.force_ciphersuite[0] == 0 )
{
ret = 2;
goto usage;
}
opt.force_ciphersuite[1] = 0;
}
else if( strcmp( p, "renegotiation" ) == 0 )
{
opt.renegotiation = (atoi( q )) ?
MBEDTLS_SSL_RENEGOTIATION_ENABLED :
MBEDTLS_SSL_RENEGOTIATION_DISABLED;
}
#if !defined(MBEDTLS_SSL_CONF_ALLOW_LEGACY_RENEGOTIATION)
else if( strcmp( p, "allow_legacy" ) == 0 )
{
switch( atoi( q ) )
{
case -1:
opt.allow_legacy = MBEDTLS_SSL_LEGACY_BREAK_HANDSHAKE;
break;
case 0:
opt.allow_legacy = MBEDTLS_SSL_LEGACY_NO_RENEGOTIATION;
break;
case 1:
opt.allow_legacy = MBEDTLS_SSL_LEGACY_ALLOW_RENEGOTIATION;
break;
default: goto usage;
}
}
#endif /* !MBEDTLS_SSL_CONF_ALLOW_LEGACY_RENEGOTIATION */
else if( strcmp( p, "renegotiate" ) == 0 )
{
opt.renegotiate = atoi( q );
if( opt.renegotiate < 0 || opt.renegotiate > 1 )
goto usage;
}
else if( strcmp( p, "exchanges" ) == 0 )
{
opt.exchanges = atoi( q );
if( opt.exchanges < 1 )
goto usage;
}
else if( strcmp( p, "reconnect" ) == 0 )
{
opt.reconnect = atoi( q );
if( opt.reconnect < 0 || opt.reconnect > 2 )
goto usage;
}
else if( strcmp( p, "reco_delay" ) == 0 )
{
opt.reco_delay = atoi( q );
if( opt.reco_delay < 0 )
goto usage;
}
else if( strcmp( p, "reco_mode" ) == 0 )
{
opt.reco_mode = atoi( q );
if( opt.reco_mode < 0 )
goto usage;
}
else if( strcmp( p, "reconnect_hard" ) == 0 )
{
opt.reconnect_hard = atoi( q );
if( opt.reconnect_hard < 0 || opt.reconnect_hard > 1 )
goto usage;
}
else if( strcmp( p, "tickets" ) == 0 )
{
opt.tickets = atoi( q );
if( opt.tickets < 0 || opt.tickets > 2 )
goto usage;
}
else if( strcmp( p, "alpn" ) == 0 )
{
opt.alpn_string = q;
}
else if( strcmp( p, "fallback" ) == 0 )
{
switch( atoi( q ) )
{
case 0: opt.fallback = MBEDTLS_SSL_IS_NOT_FALLBACK; break;
case 1: opt.fallback = MBEDTLS_SSL_IS_FALLBACK; break;
default: goto usage;
}
}
else if( strcmp( p, "extended_ms" ) == 0 )
{
switch( atoi( q ) )
{
case 0:
opt.extended_ms = MBEDTLS_SSL_EXTENDED_MS_DISABLED;
break;
case 1:
opt.extended_ms = MBEDTLS_SSL_EXTENDED_MS_ENABLED;
break;
default: goto usage;
}
}
else if( strcmp( p, "enforce_extended_master_secret" ) == 0 )
{
switch( atoi( q ) )
{
case 0:
opt.enforce_extended_master_secret =
MBEDTLS_SSL_EXTENDED_MS_ENFORCE_DISABLED;
break;
case 1:
opt.enforce_extended_master_secret =
MBEDTLS_SSL_EXTENDED_MS_ENFORCE_ENABLED;
break;
default: goto usage;
}
}
#if !defined(MBEDTLS_SSL_CONF_SINGLE_EC)
else if( strcmp( p, "curves" ) == 0 )
opt.curves = q;
#endif /* !MBEDTLS_SSL_CONF_SINGLE_EC */
else if( strcmp( p, "etm" ) == 0 )
{
switch( atoi( q ) )
{
case 0: opt.etm = MBEDTLS_SSL_ETM_DISABLED; break;
case 1: opt.etm = MBEDTLS_SSL_ETM_ENABLED; break;
default: goto usage;
}
}
#if !defined(MBEDTLS_SSL_CONF_MIN_MINOR_VER) || \
!defined(MBEDTLS_SSL_CONF_MIN_MAJOR_VER) || \
!defined(MBEDTLS_SSL_CONF_MAX_MINOR_VER) || \
!defined(MBEDTLS_SSL_CONF_MAX_MAJOR_VER)
else if( strcmp( p, "min_version" ) == 0 )
{
if( strcmp( q, "ssl3" ) == 0 )
opt.min_version = MBEDTLS_SSL_MINOR_VERSION_0;
else if( strcmp( q, "tls1" ) == 0 )
opt.min_version = MBEDTLS_SSL_MINOR_VERSION_1;
else if( strcmp( q, "tls1_1" ) == 0 ||
strcmp( q, "dtls1" ) == 0 )
opt.min_version = MBEDTLS_SSL_MINOR_VERSION_2;
else if( strcmp( q, "tls1_2" ) == 0 ||
strcmp( q, "dtls1_2" ) == 0 )
opt.min_version = MBEDTLS_SSL_MINOR_VERSION_3;
else
goto usage;
}
else if( strcmp( p, "max_version" ) == 0 )
{
if( strcmp( q, "ssl3" ) == 0 )
opt.max_version = MBEDTLS_SSL_MINOR_VERSION_0;
else if( strcmp( q, "tls1" ) == 0 )
opt.max_version = MBEDTLS_SSL_MINOR_VERSION_1;
else if( strcmp( q, "tls1_1" ) == 0 ||
strcmp( q, "dtls1" ) == 0 )
opt.max_version = MBEDTLS_SSL_MINOR_VERSION_2;
else if( strcmp( q, "tls1_2" ) == 0 ||
strcmp( q, "dtls1_2" ) == 0 )
opt.max_version = MBEDTLS_SSL_MINOR_VERSION_3;
else
goto usage;
}
else if( strcmp( p, "force_version" ) == 0 )
{
if( strcmp( q, "ssl3" ) == 0 )
{
opt.min_version = MBEDTLS_SSL_MINOR_VERSION_0;
opt.max_version = MBEDTLS_SSL_MINOR_VERSION_0;
}
else if( strcmp( q, "tls1" ) == 0 )
{
opt.min_version = MBEDTLS_SSL_MINOR_VERSION_1;
opt.max_version = MBEDTLS_SSL_MINOR_VERSION_1;
}
else if( strcmp( q, "tls1_1" ) == 0 )
{
opt.min_version = MBEDTLS_SSL_MINOR_VERSION_2;
opt.max_version = MBEDTLS_SSL_MINOR_VERSION_2;
}
else if( strcmp( q, "tls1_2" ) == 0 )
{
opt.min_version = MBEDTLS_SSL_MINOR_VERSION_3;
opt.max_version = MBEDTLS_SSL_MINOR_VERSION_3;
}
else if( strcmp( q, "dtls1" ) == 0 )
{
opt.min_version = MBEDTLS_SSL_MINOR_VERSION_2;
opt.max_version = MBEDTLS_SSL_MINOR_VERSION_2;
opt.transport = MBEDTLS_SSL_TRANSPORT_DATAGRAM;
}
else if( strcmp( q, "dtls1_2" ) == 0 )
{
opt.min_version = MBEDTLS_SSL_MINOR_VERSION_3;
opt.max_version = MBEDTLS_SSL_MINOR_VERSION_3;
opt.transport = MBEDTLS_SSL_TRANSPORT_DATAGRAM;
}
else
goto usage;
}
#endif
else if( strcmp( p, "arc4" ) == 0 )
{
switch( atoi( q ) )
{
case 0: opt.arc4 = MBEDTLS_SSL_ARC4_DISABLED; break;
case 1: opt.arc4 = MBEDTLS_SSL_ARC4_ENABLED; break;
default: goto usage;
}
}
else if( strcmp( p, "allow_sha1" ) == 0 )
{
switch( atoi( q ) )
{
case 0: opt.allow_sha1 = 0; break;
case 1: opt.allow_sha1 = 1; break;
default: goto usage;
}
}
#if !defined(MBEDTLS_SSL_CONF_AUTHMODE)
else if( strcmp( p, "auth_mode" ) == 0 )
{
if( strcmp( q, "none" ) == 0 )
opt.auth_mode = MBEDTLS_SSL_VERIFY_NONE;
else if( strcmp( q, "optional" ) == 0 )
opt.auth_mode = MBEDTLS_SSL_VERIFY_OPTIONAL;
else if( strcmp( q, "required" ) == 0 )
opt.auth_mode = MBEDTLS_SSL_VERIFY_REQUIRED;
else
goto usage;
}
#endif
else if( strcmp( p, "max_frag_len" ) == 0 )
{
if( strcmp( q, "512" ) == 0 )
opt.mfl_code = MBEDTLS_SSL_MAX_FRAG_LEN_512;
else if( strcmp( q, "1024" ) == 0 )
opt.mfl_code = MBEDTLS_SSL_MAX_FRAG_LEN_1024;
else if( strcmp( q, "2048" ) == 0 )
opt.mfl_code = MBEDTLS_SSL_MAX_FRAG_LEN_2048;
else if( strcmp( q, "4096" ) == 0 )
opt.mfl_code = MBEDTLS_SSL_MAX_FRAG_LEN_4096;
else
goto usage;
}
else if( strcmp( p, "trunc_hmac" ) == 0 )
{
switch( atoi( q ) )
{
case 0: opt.trunc_hmac = MBEDTLS_SSL_TRUNC_HMAC_DISABLED; break;
case 1: opt.trunc_hmac = MBEDTLS_SSL_TRUNC_HMAC_ENABLED; break;
default: goto usage;
}
}
else if( strcmp( p, "hs_timeout" ) == 0 )
{
if( ( p = strchr( q, '-' ) ) == NULL )
goto usage;
*p++ = '\0';
opt.hs_to_min = atoi( q );
opt.hs_to_max = atoi( p );
if( opt.hs_to_min == 0 || opt.hs_to_max < opt.hs_to_min )
goto usage;
}
else if( strcmp( p, "mtu" ) == 0 )
{
opt.dtls_mtu = atoi( q );
if( opt.dtls_mtu < 0 )
goto usage;
}
else if( strcmp( p, "dgram_packing" ) == 0 )
{
opt.dgram_packing = atoi( q );
if( opt.dgram_packing != 0 &&
opt.dgram_packing != 1 )
{
goto usage;
}
}
else if( strcmp( p, "recsplit" ) == 0 )
{
opt.recsplit = atoi( q );
if( opt.recsplit < 0 || opt.recsplit > 1 )
goto usage;
}
else if( strcmp( p, "dhmlen" ) == 0 )
{
opt.dhmlen = atoi( q );
if( opt.dhmlen < 0 )
goto usage;
}
else if( strcmp( p, "query_config" ) == 0 )
{
mbedtls_exit( query_config( q ) );
}
else if( strcmp( p, "skip_close_notify" ) == 0 )
{
opt.skip_close_notify = atoi( q );
if( opt.skip_close_notify < 0 || opt.skip_close_notify > 1 )
goto usage;
}
else if( strcmp( p, "serialize") == 0 )
{
opt.serialize = atoi( q );
if( opt.serialize < 0 || opt.serialize > 2)
goto usage;
}
else
goto usage;
}
/* try to use as small buf from the heap as possible */
if( opt.request_size <= 0 )
{
main_buf_len = MBEDTLS_SSL_MAX_CONTENT_LEN + 1;
}
else if( opt.request_size < (int)sizeof(GET_REQUEST) )
{
main_buf_len = sizeof(GET_REQUEST) + 1;
}
else
{
main_buf_len = opt.request_size + 1;
}
buf = mbedtls_calloc( 1, main_buf_len );
if( buf == NULL )
{
mbedtls_printf( "buf allocation failed!\n" );
goto exit;
}
/* Event-driven IO is incompatible with the above custom
* receive and send functions, as the polling builds on
* refers to the underlying net_context. */
if( opt.event == 1 && opt.nbio != 1 )
{
mbedtls_printf( "Warning: event-driven IO mandates nbio=1 - overwrite\n" );
opt.nbio = 1;
}
#if defined(MBEDTLS_DEBUG_C)
mbedtls_debug_set_threshold( opt.debug_level );
#endif
if( opt.force_ciphersuite[0] > 0 )
{
mbedtls_ssl_ciphersuite_handle_t ciphersuite_info;
ciphersuite_info =
mbedtls_ssl_ciphersuite_from_id( opt.force_ciphersuite[0] );
if( opt.max_version != -1 &&
mbedtls_ssl_ver_gt(
mbedtls_ssl_suite_get_min_minor_ver( ciphersuite_info ),
opt.max_version ) )
{
mbedtls_printf( "forced ciphersuite not allowed with this protocol version\n" );
ret = 2;
goto usage;
}
if( opt.min_version != -1 &&
mbedtls_ssl_ver_lt(
mbedtls_ssl_suite_get_max_minor_ver( ciphersuite_info ),
opt.min_version ) )
{
mbedtls_printf( "forced ciphersuite not allowed with this protocol version\n" );
ret = 2;
goto usage;
}
/* If the server selects a version that's not supported by
* this suite, then there will be no common ciphersuite... */
if( opt.max_version == -1 ||
mbedtls_ssl_ver_gt(
opt.max_version,
mbedtls_ssl_suite_get_max_minor_ver( ciphersuite_info ) ) )
{
opt.max_version = mbedtls_ssl_suite_get_max_minor_ver( ciphersuite_info );
}
if( mbedtls_ssl_ver_lt(
opt.min_version,
mbedtls_ssl_suite_get_min_minor_ver( ciphersuite_info ) ) )
{
opt.min_version = mbedtls_ssl_suite_get_min_minor_ver( ciphersuite_info );
/* DTLS starts with TLS 1.1 */
if( opt.transport == MBEDTLS_SSL_TRANSPORT_DATAGRAM &&
mbedtls_ssl_ver_lt( opt.min_version,
MBEDTLS_SSL_MINOR_VERSION_2 ) )
{
opt.min_version = MBEDTLS_SSL_MINOR_VERSION_2;
}
}
/* Enable RC4 if needed and not explicitly disabled */
if( mbedtls_ssl_suite_get_cipher( ciphersuite_info ) == MBEDTLS_CIPHER_ARC4_128 )
{
if( opt.arc4 == MBEDTLS_SSL_ARC4_DISABLED )
{
mbedtls_printf( "forced RC4 ciphersuite with RC4 disabled\n" );
ret = 2;
goto usage;
}
opt.arc4 = MBEDTLS_SSL_ARC4_ENABLED;
}
}
#if defined(MBEDTLS_SSL_DTLS_CONNECTION_ID)
cid_len = strlen( opt.cid_val ) / 2;
if( cid_len > sizeof( cid ) )
{
mbedtls_printf( "CID too long\n" );
goto exit;
}
if( unhexify( opt.cid_val, cid ) != 0 )
{
mbedtls_printf( "CID not valid hex\n" );
goto exit;
}
/* Keep CID settings for renegotiation unless
* specified otherwise. */
if( opt.cid_enabled_renego == DFL_CID_ENABLED_RENEGO )
opt.cid_enabled_renego = opt.cid_enabled;
if( opt.cid_val_renego == DFL_CID_VALUE_RENEGO )
opt.cid_val_renego = opt.cid_val;
cid_renego_len = strlen( opt.cid_val_renego ) / 2;
if( cid_renego_len > sizeof( cid_renego ) )
{
mbedtls_printf( "CID too long\n" );
goto exit;
}
if( unhexify( opt.cid_val_renego, cid_renego ) != 0 )
{
mbedtls_printf( "CID not valid hex\n" );
goto exit;
}
#endif /* MBEDTLS_SSL_DTLS_CONNECTION_ID */
#if defined(MBEDTLS_KEY_EXCHANGE__SOME__PSK_ENABLED)
/*
* Unhexify the pre-shared key if any is given
*/
if( strlen( opt.psk ) )
{
psk_len = strlen( opt.psk ) / 2;
if( psk_len > sizeof( psk ) )
{
mbedtls_printf( "pre-shared key too long\n" );
goto exit;
}
if( unhexify( opt.psk, psk ) != 0 )
{
mbedtls_printf( "pre-shared key not valid hex\n" );
goto exit;
}
}
#endif /* MBEDTLS_KEY_EXCHANGE__SOME__PSK_ENABLED */
#if defined(MBEDTLS_ECP_C) && !defined(MBEDTLS_SSL_CONF_SINGLE_EC)
if( opt.curves != NULL )
{
p = (char *) opt.curves;
i = 0;
if( strcmp( p, "none" ) == 0 )
{
curve_list[0] = MBEDTLS_ECP_DP_NONE;
}
else if( strcmp( p, "default" ) != 0 )
{
/* Leave room for a final NULL in curve list */
while( i < CURVE_LIST_SIZE - 1 && *p != '\0' )
{
q = p;
/* Terminate the current string */
while( *p != ',' && *p != '\0' )
p++;
if( *p == ',' )
*p++ = '\0';
if( ( curve_cur = mbedtls_ecp_curve_info_from_name( q ) ) != NULL )
{
curve_list[i++] = curve_cur->grp_id;
}
else
{
mbedtls_printf( "unknown curve %s\n", q );
mbedtls_printf( "supported curves: " );
for( curve_cur = mbedtls_ecp_curve_list();
curve_cur->grp_id != MBEDTLS_ECP_DP_NONE;
curve_cur++ )
{
mbedtls_printf( "%s ", curve_cur->name );
}
mbedtls_printf( "\n" );
goto exit;
}
}
mbedtls_printf("Number of curves: %d\n", i );
if( i == CURVE_LIST_SIZE - 1 && *p != '\0' )
{
mbedtls_printf( "curves list too long, maximum %d",
CURVE_LIST_SIZE - 1 );
goto exit;
}
curve_list[i] = MBEDTLS_ECP_DP_NONE;
}
}
#endif /* MBEDTLS_ECP_C && !MBEDTLS_SSL_CONF_SINGLE_EC */
#if defined(MBEDTLS_SSL_ALPN)
if( opt.alpn_string != NULL )
{
p = (char *) opt.alpn_string;
i = 0;
/* Leave room for a final NULL in alpn_list */
while( i < ALPN_LIST_SIZE - 1 && *p != '\0' )
{
alpn_list[i++] = p;
/* Terminate the current string and move on to next one */
while( *p != ',' && *p != '\0' )
p++;
if( *p == ',' )
*p++ = '\0';
}
}
#endif /* MBEDTLS_SSL_ALPN */
/*
* 0. Initialize the RNG and the session data
*/
mbedtls_printf( "\n . Seeding the random number generator..." );
fflush( stdout );
mbedtls_entropy_init( entropy );
#if defined(MBEDTLS_CTR_DRBG_C)
if( ( ret = mbedtls_ctr_drbg_seed( ctr_drbg, mbedtls_entropy_func,
entropy, (const unsigned char *) pers,
strlen( pers ) ) ) != 0 )
{
mbedtls_printf( " failed\n ! mbedtls_ctr_drbg_seed returned -0x%x\n",
-ret );
goto exit;
}
#else /* MBEDTLS_CTR_DRBG_C */
if( ( ret = mbedtls_hmac_drbg_seed( hmac_drbg,
mbedtls_md_info_from_type(
available_hashes[0] ),
mbedtls_entropy_func,
entropy, (const unsigned char *) pers,
strlen( pers ) ) ) != 0 )
{
mbedtls_printf( " failed\n ! mbedtls_ctr_drbg_seed returned -0x%x\n",
-ret );
goto exit;
}
#endif /* MBEDTLS_CTR_DRBG */
mbedtls_printf( " ok\n" );
#if defined(MBEDTLS_X509_CRT_PARSE_C)
/*
* 1.1. Load the trusted CA
*/
mbedtls_printf( " . Loading the CA root certificate ..." );
fflush( stdout );
if( strcmp( opt.ca_path, "none" ) == 0 ||
strcmp( opt.ca_file, "none" ) == 0 )
{
ret = 0;
}
else
#if defined(MBEDTLS_FS_IO)
if( strlen( opt.ca_path ) )
ret = mbedtls_x509_crt_parse_path( cacert, opt.ca_path );
else if( strlen( opt.ca_file ) )
ret = mbedtls_x509_crt_parse_file( cacert, opt.ca_file );
else
#endif
#if defined(MBEDTLS_CERTS_C)
{
#if defined(MBEDTLS_PEM_PARSE_C)
for( i = 0; mbedtls_test_cas[i] != NULL; i++ )
{
ret = mbedtls_x509_crt_parse( cacert,
(const unsigned char *) mbedtls_test_cas[i],
mbedtls_test_cas_len[i] );
if( ret != 0 )
break;
}
if( ret == 0 )
#endif /* MBEDTLS_PEM_PARSE_C */
for( i = 0; mbedtls_test_cas_der[i] != NULL; i++ )
{
ret = mbedtls_x509_crt_parse_der_nocopy( cacert,
(const unsigned char *) mbedtls_test_cas_der[i],
mbedtls_test_cas_der_len[i] );
if( ret != 0 )
break;
}
}
#else
{
ret = 1;
mbedtls_printf( "MBEDTLS_CERTS_C not defined." );
}
#endif /* MBEDTLS_CERTS_C */
if( ret < 0 )
{
mbedtls_printf( " failed\n ! mbedtls_x509_crt_parse returned -0x%x\n\n",
-ret );
goto exit;
}
mbedtls_printf( " ok (%d skipped)\n", ret );
/*
* 1.2. Load own certificate and private key
*
* (can be skipped if client authentication is not required)
*/
mbedtls_printf( " . Loading the client cert. and key..." );
fflush( stdout );
if( strcmp( opt.crt_file, "none" ) == 0 )
ret = 0;
else
#if defined(MBEDTLS_FS_IO)
if( strlen( opt.crt_file ) )
ret = mbedtls_x509_crt_parse_file( clicert, opt.crt_file );
else
#endif
#if defined(MBEDTLS_CERTS_C)
#if defined(MBEDTLS_PEM_PARSE_C)
ret = mbedtls_x509_crt_parse( clicert,
(const unsigned char *) mbedtls_test_cli_crt,
mbedtls_test_cli_crt_len );
#else
ret = mbedtls_x509_crt_parse_der_nocopy( clicert,
(const unsigned char *) mbedtls_test_cli_crt,
mbedtls_test_cli_crt_len );
#endif
#else
{
ret = 1;
mbedtls_printf( "MBEDTLS_CERTS_C not defined." );
}
#endif
if( ret != 0 )
{
mbedtls_printf( " failed\n ! mbedtls_x509_crt_parse returned -0x%x\n\n",
-ret );
goto exit;
}
if( strcmp( opt.key_file, "none" ) == 0 )
ret = 0;
else
#if defined(MBEDTLS_FS_IO)
if( strlen( opt.key_file ) )
ret = mbedtls_pk_parse_keyfile( pkey, opt.key_file, "" );
else
#endif
#if defined(MBEDTLS_CERTS_C)
ret = mbedtls_pk_parse_key( pkey,
(const unsigned char *) mbedtls_test_cli_key,
mbedtls_test_cli_key_len, NULL, 0 );
#else
{
ret = 1;
mbedtls_printf( "MBEDTLS_CERTS_C not defined." );
}
#endif
if( ret != 0 )
{
mbedtls_printf( " failed\n ! mbedtls_pk_parse_key returned -0x%x\n\n",
-ret );
goto exit;
}
mbedtls_printf( " ok\n" );
#endif /* MBEDTLS_X509_CRT_PARSE_C */
/*
* 2. Start the connection
*/
if( opt.server_addr == NULL)
opt.server_addr = opt.server_name;
mbedtls_printf( " . Connecting to %s/%s/%s...",
opt.transport == MBEDTLS_SSL_TRANSPORT_STREAM ? "tcp" : "udp",
opt.server_addr, opt.server_port );
fflush( stdout );
if( ( ret = mbedtls_net_connect( &server_fd,
opt.server_addr, opt.server_port,
opt.transport == MBEDTLS_SSL_TRANSPORT_STREAM ?
MBEDTLS_NET_PROTO_TCP : MBEDTLS_NET_PROTO_UDP ) ) != 0 )
{
mbedtls_printf( " failed\n ! mbedtls_net_connect returned -0x%x\n\n",
-ret );
goto exit;
}
if( opt.nbio > 0 )
ret = mbedtls_net_set_nonblock( &server_fd );
else
ret = mbedtls_net_set_block( &server_fd );
if( ret != 0 )
{
mbedtls_printf( " failed\n ! net_set_(non)block() returned -0x%x\n\n",
-ret );
goto exit;
}
mbedtls_printf( " ok\n" );
/*
* 3. Setup stuff
*/
mbedtls_printf( " . Setting up the SSL/TLS structure..." );
fflush( stdout );
if( ( ret = mbedtls_ssl_config_defaults( conf,
MBEDTLS_SSL_IS_CLIENT,
opt.transport,
MBEDTLS_SSL_PRESET_DEFAULT ) ) != 0 )
{
mbedtls_printf( " failed\n ! mbedtls_ssl_config_defaults returned -0x%x\n\n",
-ret );
goto exit;
}
#if defined(MBEDTLS_X509_CRT_PARSE_C)
/* The default algorithms profile disables SHA-1, but our tests still
rely on it heavily. */
if( opt.allow_sha1 > 0 )
{
crt_profile_for_test.allowed_mds |= MBEDTLS_X509_ID_FLAG( MBEDTLS_MD_SHA1 );
mbedtls_ssl_conf_cert_profile( conf, &crt_profile_for_test );
#if !defined(MBEDTLS_SSL_CONF_SINGLE_HASH)
mbedtls_ssl_conf_sig_hashes( conf, available_hashes );
#endif
}
#if !defined(MBEDTLS_X509_REMOVE_VERIFY_CALLBACK)
mbedtls_ssl_conf_verify( conf, my_verify, NULL );
memset( peer_crt_info, 0, sizeof( peer_crt_info ) );
#endif /* MBEDTLS_X509_REMOVE_VERIFY_CALLBACK */
#endif /* MBEDTLS_X509_CRT_PARSE_C */
#if defined(MBEDTLS_SSL_DTLS_CONNECTION_ID) && \
!defined(MBEDTLS_SSL_CONF_CID_LEN) && \
!defined(MBEDTLS_SSL_CONF_IGNORE_UNEXPECTED_CID)
if( opt.cid_enabled == 1 || opt.cid_enabled_renego == 1 )
{
if( opt.cid_enabled == 1 &&
opt.cid_enabled_renego == 1 &&
cid_len != cid_renego_len )
{
mbedtls_printf( "CID length must not change during renegotiation\n" );
goto usage;
}
if( opt.cid_enabled == 1 )
ret = mbedtls_ssl_conf_cid( conf, cid_len,
MBEDTLS_SSL_UNEXPECTED_CID_IGNORE );
else
ret = mbedtls_ssl_conf_cid( conf, cid_renego_len,
MBEDTLS_SSL_UNEXPECTED_CID_IGNORE );
if( ret != 0 )
{
mbedtls_printf( " failed\n ! mbedtls_ssl_conf_cid_len returned -%#04x\n\n",
-ret );
goto exit;
}
}
#endif /* MBEDTLS_SSL_DTLS_CONNECTION_ID &&
!MBEDTLS_SSL_CONF_CID_LEN &&
!MBEDTLS_SSL_CONF_IGNORE_UNEXPECTED_CID */
if( opt.auth_mode != DFL_AUTH_MODE )
mbedtls_ssl_conf_authmode( conf, opt.auth_mode );
#if defined(MBEDTLS_SSL_PROTO_DTLS)
if( opt.hs_to_min != DFL_HS_TO_MIN || opt.hs_to_max != DFL_HS_TO_MAX )
mbedtls_ssl_conf_handshake_timeout( conf, opt.hs_to_min,
opt.hs_to_max );
if( opt.dgram_packing != DFL_DGRAM_PACKING )
mbedtls_ssl_set_datagram_packing( ssl, opt.dgram_packing );
#endif /* MBEDTLS_SSL_PROTO_DTLS */
#if defined(MBEDTLS_SSL_MAX_FRAGMENT_LENGTH)
if( ( ret = mbedtls_ssl_conf_max_frag_len( conf, opt.mfl_code ) ) != 0 )
{
mbedtls_printf( " failed\n ! mbedtls_ssl_conf_max_frag_len returned %d\n\n",
ret );
goto exit;
}
#endif
#if defined(MBEDTLS_SSL_TRUNCATED_HMAC)
if( opt.trunc_hmac != DFL_TRUNC_HMAC )
mbedtls_ssl_conf_truncated_hmac( conf, opt.trunc_hmac );
#endif
#if defined(MBEDTLS_SSL_EXTENDED_MASTER_SECRET) && \
!defined(MBEDTLS_SSL_CONF_EXTENDED_MASTER_SECRET) && \
!defined(MBEDTLS_SSL_CONF_ENFORCE_EXTENDED_MASTER_SECRET)
if( opt.extended_ms != DFL_EXTENDED_MS )
mbedtls_ssl_conf_extended_master_secret( conf, opt.extended_ms );
if( opt.enforce_extended_master_secret != DFL_EXTENDED_MS_ENFORCE )
mbedtls_ssl_conf_extended_master_secret_enforce( conf,
opt.enforce_extended_master_secret );
#endif
#if defined(MBEDTLS_SSL_ENCRYPT_THEN_MAC)
if( opt.etm != DFL_ETM )
mbedtls_ssl_conf_encrypt_then_mac( conf, opt.etm );
#endif
#if defined(MBEDTLS_SSL_CBC_RECORD_SPLITTING)
if( opt.recsplit != DFL_RECSPLIT )
mbedtls_ssl_conf_cbc_record_splitting( conf, opt.recsplit
? MBEDTLS_SSL_CBC_RECORD_SPLITTING_ENABLED
: MBEDTLS_SSL_CBC_RECORD_SPLITTING_DISABLED );
#endif
#if defined(MBEDTLS_DHM_C)
if( opt.dhmlen != DFL_DHMLEN )
mbedtls_ssl_conf_dhm_min_bitlen( conf, opt.dhmlen );
#endif
#if defined(MBEDTLS_SSL_ALPN)
if( opt.alpn_string != NULL )
if( ( ret = mbedtls_ssl_conf_alpn_protocols( conf, alpn_list ) ) != 0 )
{
mbedtls_printf( " failed\n ! mbedtls_ssl_conf_alpn_protocols returned %d\n\n",
ret );
goto exit;
}
#endif
#if defined(MBEDTLS_CTR_DRBG_C)
#if !defined(MBEDTLS_SSL_CONF_RNG)
mbedtls_ssl_conf_rng( conf, mbedtls_ctr_drbg_random, ctr_drbg );
#else
rng_ctx_global = ctr_drbg;
#endif
#else /* MBEDTLS_CTR_DRBG_C */
#if !defined(MBEDTLS_SSL_CONF_RNG)
mbedtls_ssl_conf_rng( conf, mbedtls_hmac_drbg_random, hmac_drbg );
#else
rng_ctx_global = hmac_drbg;
#endif
#endif /* MBEDTLS_CTR_DRBG_C */
#if defined(MBEDTLS_DEBUG_C)
mbedtls_ssl_conf_dbg( conf, my_debug, stdout );
#endif
#if !defined(MBEDTLS_SSL_CONF_READ_TIMEOUT)
mbedtls_ssl_conf_read_timeout( conf, opt.read_timeout );
#endif
#if defined(MBEDTLS_SSL_SESSION_TICKETS)
mbedtls_ssl_conf_session_tickets( conf, opt.tickets );
#endif
#if !defined(MBEDTLS_SSL_CONF_SINGLE_CIPHERSUITE)
if( opt.force_ciphersuite[0] != DFL_FORCE_CIPHER )
mbedtls_ssl_conf_ciphersuites( conf, opt.force_ciphersuite );
#endif /* MBEDTLS_SSL_CONF_SINGLE_CIPHERSUITE */
#if defined(MBEDTLS_ARC4_C)
if( opt.arc4 != DFL_ARC4 )
mbedtls_ssl_conf_arc4_support( conf, opt.arc4 );
#endif
#if !defined(MBEDTLS_SSL_CONF_ALLOW_LEGACY_RENEGOTIATION)
if( opt.allow_legacy != DFL_ALLOW_LEGACY )
mbedtls_ssl_conf_legacy_renegotiation( conf, opt.allow_legacy );
#endif /* !MBEDTLS_SSL_CONF_ALLOW_LEGACY_RENEGOTIATION */
#if defined(MBEDTLS_SSL_RENEGOTIATION)
mbedtls_ssl_conf_renegotiation( conf, opt.renegotiation );
#endif
#if defined(MBEDTLS_X509_CRT_PARSE_C)
if( strcmp( opt.ca_path, "none" ) != 0 &&
strcmp( opt.ca_file, "none" ) != 0 )
{
mbedtls_ssl_conf_ca_chain( conf, cacert, NULL );
}
if( strcmp( opt.crt_file, "none" ) != 0 &&
strcmp( opt.key_file, "none" ) != 0 )
{
if( ( ret = mbedtls_ssl_conf_own_cert( conf, clicert, pkey ) ) != 0 )
{
mbedtls_printf( " failed\n ! mbedtls_ssl_conf_own_cert returned %d\n\n",
ret );
goto exit;
}
}
#endif
#if defined(MBEDTLS_ECP_C)
#if !defined(MBEDTLS_SSL_CONF_SINGLE_EC)
if( opt.curves != NULL &&
strcmp( opt.curves, "default" ) != 0 )
{
mbedtls_ssl_conf_curves( conf, curve_list );
}
#endif /* !MBEDTLS_SSL_CONF_SINGLE_EC */
#endif /* MBEDTLS_ECP_C */
#if defined(MBEDTLS_KEY_EXCHANGE__SOME__PSK_ENABLED)
if( ( ret = mbedtls_ssl_conf_psk( conf, psk, psk_len,
(const unsigned char *) opt.psk_identity,
strlen( opt.psk_identity ) ) ) != 0 )
{
mbedtls_printf( " failed\n ! mbedtls_ssl_conf_psk returned %d\n\n",
ret );
goto exit;
}
#endif
#if !defined(MBEDTLS_SSL_CONF_MIN_MINOR_VER) || \
!defined(MBEDTLS_SSL_CONF_MIN_MAJOR_VER) || \
!defined(MBEDTLS_SSL_CONF_MAX_MINOR_VER) || \
!defined(MBEDTLS_SSL_CONF_MAX_MAJOR_VER)
if( opt.min_version != DFL_MIN_VERSION )
mbedtls_ssl_conf_min_version( conf, MBEDTLS_SSL_MAJOR_VERSION_3,
opt.min_version );
if( opt.max_version != DFL_MAX_VERSION )
mbedtls_ssl_conf_max_version( conf, MBEDTLS_SSL_MAJOR_VERSION_3,
opt.max_version );
#endif
#if defined(MBEDTLS_SSL_FALLBACK_SCSV)
if( opt.fallback != DFL_FALLBACK )
mbedtls_ssl_conf_fallback( conf, opt.fallback );
#endif
if( ( ret = mbedtls_ssl_setup( ssl, conf ) ) != 0 )
{
mbedtls_printf( " failed\n ! mbedtls_ssl_setup returned -0x%x\n\n",
-ret );
goto exit;
}
#if defined(MBEDTLS_X509_CRT_PARSE_C) && !defined(MBEDTLS_X509_REMOVE_HOSTNAME_VERIFICATION)
if( ( ret = mbedtls_ssl_set_hostname( ssl, opt.server_name ) ) != 0 )
{
mbedtls_printf( " failed\n ! mbedtls_ssl_set_hostname returned %d\n\n",
ret );
goto exit;
}
#endif
#if defined(MBEDTLS_KEY_EXCHANGE_ECJPAKE_ENABLED)
if( opt.ecjpake_pw != DFL_ECJPAKE_PW )
{
if( ( ret = mbedtls_ssl_set_hs_ecjpake_password( ssl,
(const unsigned char *) opt.ecjpake_pw,
strlen( opt.ecjpake_pw ) ) ) != 0 )
{
mbedtls_printf( " failed\n ! mbedtls_ssl_set_hs_ecjpake_password returned %d\n\n",
ret );
goto exit;
}
}
#endif
#if !defined(MBEDTLS_SSL_CONF_RECV) && \
!defined(MBEDTLS_SSL_CONF_SEND) && \
!defined(MBEDTLS_SSL_CONF_RECV_TIMEOUT)
io_ctx.ssl = ssl;
io_ctx.net = &server_fd;
mbedtls_ssl_set_bio( ssl, &io_ctx, send_cb, recv_cb,
opt.nbio == 0 ? recv_timeout_cb : NULL );
#else
mbedtls_ssl_set_bio_ctx( ssl, &server_fd );
#endif
#if defined(MBEDTLS_SSL_DTLS_CONNECTION_ID)
if( opt.transport == MBEDTLS_SSL_TRANSPORT_DATAGRAM )
{
if( ( ret = mbedtls_ssl_set_cid( ssl, opt.cid_enabled,
cid, cid_len ) ) != 0 )
{
mbedtls_printf( " failed\n ! mbedtls_ssl_set_cid returned %d\n\n",
ret );
goto exit;
}
}
#endif /* MBEDTLS_SSL_DTLS_CONNECTION_ID */
#if defined(MBEDTLS_SSL_PROTO_DTLS)
if( opt.dtls_mtu != DFL_DTLS_MTU )
mbedtls_ssl_set_mtu( ssl, opt.dtls_mtu );
#endif
#if defined(MBEDTLS_TIMING_C)
#if !defined(MBEDTLS_SSL_CONF_SET_TIMER) && \
!defined(MBEDTLS_SSL_CONF_GET_TIMER)
mbedtls_ssl_set_timer_cb( ssl, &timer, mbedtls_timing_set_delay,
mbedtls_timing_get_delay );
#else
mbedtls_ssl_set_timer_cb_ctx( ssl, &timer );
#endif
#endif
#if defined(MBEDTLS_ECP_RESTARTABLE)
if( opt.ec_max_ops != DFL_EC_MAX_OPS )
mbedtls_ecp_set_max_ops( opt.ec_max_ops );
#endif
mbedtls_printf( " ok\n" );
/*
* 4. Handshake
*/
mbedtls_printf( " . Performing the SSL/TLS handshake..." );
fflush( stdout );
while( ( ret = mbedtls_ssl_handshake( ssl ) ) != 0 )
{
if( ret != MBEDTLS_ERR_SSL_WANT_READ &&
ret != MBEDTLS_ERR_SSL_WANT_WRITE &&
ret != MBEDTLS_ERR_SSL_CRYPTO_IN_PROGRESS )
{
mbedtls_printf( " failed\n ! mbedtls_ssl_handshake returned -0x%x\n",
-ret );
if( ret == MBEDTLS_ERR_X509_CERT_VERIFY_FAILED )
mbedtls_printf(
" Unable to verify the server's certificate. "
"Either it is invalid,\n"
" or you didn't set ca_file or ca_path "
"to an appropriate value.\n"
" Alternatively, you may want to use "
"auth_mode=optional for testing purposes.\n" );
mbedtls_printf( "\n" );
goto exit;
}
#if defined(MBEDTLS_ECP_RESTARTABLE)
if( ret == MBEDTLS_ERR_SSL_CRYPTO_IN_PROGRESS )
continue;
#endif
/* For event-driven IO, wait for socket to become available */
if( opt.event == 1 /* level triggered IO */ )
{
#if defined(MBEDTLS_TIMING_C)
ret = idle( &server_fd, &timer, ret );
#else
ret = idle( &server_fd, ret );
#endif
if( ret != 0 )
goto exit;
}
}
mbedtls_printf( " ok\n [ Protocol is %s ]\n [ Ciphersuite is %s ]\n",
mbedtls_ssl_get_version( ssl ),
mbedtls_ssl_get_ciphersuite( ssl ) );
if( ( ret = mbedtls_ssl_get_record_expansion( ssl ) ) >= 0 )
mbedtls_printf( " [ Record expansion is %d ]\n", ret );
else
mbedtls_printf( " [ Record expansion is unknown (compression) ]\n" );
#if defined(MBEDTLS_SSL_MAX_FRAGMENT_LENGTH)
mbedtls_printf( " [ Maximum fragment length is %u ]\n",
(unsigned int) mbedtls_ssl_get_max_frag_len( ssl ) );
#endif
#if defined(MBEDTLS_SSL_ALPN)
if( opt.alpn_string != NULL )
{
const char *alp = mbedtls_ssl_get_alpn_protocol( ssl );
mbedtls_printf( " [ Application Layer Protocol is %s ]\n",
alp ? alp : "(none)" );
}
#endif
if( opt.reconnect != 0 )
{
mbedtls_printf(" . Saving session for reuse..." );
fflush( stdout );
if( opt.reco_mode == 1 )
{
/* free any previously saved data */
if( session_data != NULL )
{
mbedtls_platform_zeroize( session_data, session_data_len );
mbedtls_free( session_data );
session_data = NULL;
}
/* get size of the buffer needed */
mbedtls_ssl_session_save( mbedtls_ssl_get_session_pointer( ssl ),
NULL, 0, &session_data_len );
session_data = mbedtls_calloc( 1, session_data_len );
if( session_data == NULL )
{
mbedtls_printf( " failed\n ! alloc %u bytes for session data\n",
(unsigned) session_data_len );
ret = MBEDTLS_ERR_SSL_ALLOC_FAILED;
goto exit;
}
/* actually save session data */
if( ( ret = mbedtls_ssl_session_save( mbedtls_ssl_get_session_pointer( ssl ),
session_data, session_data_len,
&session_data_len ) ) != 0 )
{
mbedtls_printf( " failed\n ! mbedtls_ssl_session_saved returned -0x%04x\n\n",
-ret );
goto exit;
}
}
else
{
if( ( ret = mbedtls_ssl_get_session( ssl, &saved_session ) ) != 0 )
{
mbedtls_printf( " failed\n ! mbedtls_ssl_get_session returned -0x%x\n\n",
-ret );
goto exit;
}
}
mbedtls_printf( " ok\n" );
if( opt.reco_mode == 1 )
{
mbedtls_printf( " [ Saved %u bytes of session data]\n",
(unsigned) session_data_len );
}
}
#if defined(MBEDTLS_X509_CRT_PARSE_C)
/*
* 5. Verify the server certificate
*/
mbedtls_printf( " . Verifying peer X.509 certificate..." );
if( ( flags = mbedtls_ssl_get_verify_result( ssl ) ) != 0 )
{
#if !defined(MBEDTLS_X509_REMOVE_INFO)
char vrfy_buf[512];
#endif
mbedtls_printf( " failed\n" );
#if !defined(MBEDTLS_X509_REMOVE_INFO)
mbedtls_x509_crt_verify_info( vrfy_buf, sizeof( vrfy_buf ),
" ! ", flags );
mbedtls_printf( "%s\n", vrfy_buf );
#endif
}
else
mbedtls_printf( " ok\n" );
#if !defined(MBEDTLS_X509_REMOVE_INFO) && \
!defined(MBEDTLS_X509_REMOVE_VERIFY_CALLBACK)
mbedtls_printf( " . Peer certificate information ...\n" );
mbedtls_printf( "%s\n", peer_crt_info );
#endif /* !MBEDTLS_X509_REMOVE_INFO && !MBEDTLS_X509_REMOVE_VERIFY_CALLBACK */
#endif /* MBEDTLS_X509_CRT_PARSE_C */
#if defined(MBEDTLS_SSL_DTLS_CONNECTION_ID)
ret = report_cid_usage( ssl, "initial handshake" );
if( ret != 0 )
goto exit;
if( opt.transport == MBEDTLS_SSL_TRANSPORT_DATAGRAM )
{
if( ( ret = mbedtls_ssl_set_cid( ssl, opt.cid_enabled_renego,
cid_renego,
cid_renego_len ) ) != 0 )
{
mbedtls_printf( " failed\n ! mbedtls_ssl_set_cid returned %d\n\n",
ret );
return( ret );
}
}
#endif /* MBEDTLS_SSL_DTLS_CONNECTION_ID */
#if defined(MBEDTLS_SSL_RENEGOTIATION)
if( opt.renegotiate )
{
/*
* Perform renegotiation (this must be done when the server is waiting
* for input from our side).
*/
mbedtls_printf( " . Performing renegotiation..." );
fflush( stdout );
while( ( ret = mbedtls_ssl_renegotiate( ssl ) ) != 0 )
{
if( ret != MBEDTLS_ERR_SSL_WANT_READ &&
ret != MBEDTLS_ERR_SSL_WANT_WRITE &&
ret != MBEDTLS_ERR_SSL_CRYPTO_IN_PROGRESS )
{
mbedtls_printf( " failed\n ! mbedtls_ssl_renegotiate returned %d\n\n",
ret );
goto exit;
}
#if defined(MBEDTLS_ECP_RESTARTABLE)
if( ret == MBEDTLS_ERR_SSL_CRYPTO_IN_PROGRESS )
continue;
#endif
/* For event-driven IO, wait for socket to become available */
if( opt.event == 1 /* level triggered IO */ )
{
#if defined(MBEDTLS_TIMING_C)
idle( &server_fd, &timer, ret );
#else
idle( &server_fd, ret );
#endif
}
}
mbedtls_printf( " ok\n" );
}
#endif /* MBEDTLS_SSL_RENEGOTIATION */
#if defined(MBEDTLS_SSL_DTLS_CONNECTION_ID)
ret = report_cid_usage( ssl, "after renegotiation" );
if( ret != 0 )
goto exit;
#endif /* MBEDTLS_SSL_DTLS_CONNECTION_ID */
/*
* 6. Write the GET request
*/
retry_left = opt.max_resend;
send_request:
mbedtls_printf( " > Write to server:" );
fflush( stdout );
len = mbedtls_snprintf( (char *) buf, main_buf_len - 1, GET_REQUEST,
opt.request_page );
tail_len = (int) strlen( GET_REQUEST_END );
/* Add padding to GET request to reach opt.request_size in length */
if( opt.request_size != DFL_REQUEST_SIZE &&
len + tail_len < opt.request_size )
{
memset( buf + len, 'A', opt.request_size - len - tail_len );
len += opt.request_size - len - tail_len;
}
strncpy( (char *) buf + len, GET_REQUEST_END, main_buf_len - len - 1 );
len += tail_len;
/* Truncate if request size is smaller than the "natural" size */
if( opt.request_size != DFL_REQUEST_SIZE &&
len > opt.request_size )
{
len = opt.request_size;
/* Still end with \r\n unless that's really not possible */
if( len >= 2 ) buf[len - 2] = '\r';
if( len >= 1 ) buf[len - 1] = '\n';
}
if( opt.transport == MBEDTLS_SSL_TRANSPORT_STREAM )
{
written = 0;
frags = 0;
do
{
while( ( ret = mbedtls_ssl_write( ssl, buf + written,
len - written ) ) < 0 )
{
if( ret != MBEDTLS_ERR_SSL_WANT_READ &&
ret != MBEDTLS_ERR_SSL_WANT_WRITE &&
ret != MBEDTLS_ERR_SSL_CRYPTO_IN_PROGRESS )
{
mbedtls_printf( " failed\n ! mbedtls_ssl_write returned -0x%x\n\n",
-ret );
goto exit;
}
/* For event-driven IO, wait for socket to become available */
if( opt.event == 1 /* level triggered IO */ )
{
#if defined(MBEDTLS_TIMING_C)
idle( &server_fd, &timer, ret );
#else
idle( &server_fd, ret );
#endif
}
}
frags++;
written += ret;
}
while( written < len );
}
else /* Not stream, so datagram */
{
while( 1 )
{
ret = mbedtls_ssl_write( ssl, buf, len );
#if defined(MBEDTLS_ECP_RESTARTABLE)
if( ret == MBEDTLS_ERR_SSL_CRYPTO_IN_PROGRESS )
continue;
#endif
if( ret != MBEDTLS_ERR_SSL_WANT_READ &&
ret != MBEDTLS_ERR_SSL_WANT_WRITE )
break;
/* For event-driven IO, wait for socket to become available */
if( opt.event == 1 /* level triggered IO */ )
{
#if defined(MBEDTLS_TIMING_C)
idle( &server_fd, &timer, ret );
#else
idle( &server_fd, ret );
#endif
}
}
if( ret < 0 )
{
mbedtls_printf( " failed\n ! mbedtls_ssl_write returned %d\n\n",
ret );
goto exit;
}
frags = 1;
written = ret;
if( written < len )
{
mbedtls_printf( " warning\n ! request didn't fit into single datagram and "
"was truncated to size %u", (unsigned) written );
}
}
buf[written] = '\0';
mbedtls_printf( " %d bytes written in %d fragments\n\n%s\n",
written, frags, (char *) buf );
/* Send a non-empty request if request_size == 0 */
if ( len == 0 )
{
opt.request_size = DFL_REQUEST_SIZE;
goto send_request;
}
/*
* 7. Read the HTTP response
*/
mbedtls_printf( " < Read from server:" );
fflush( stdout );
/*
* TLS and DTLS need different reading styles (stream vs datagram)
*/
if( opt.transport == MBEDTLS_SSL_TRANSPORT_STREAM )
{
do
{
len = main_buf_len - 1;
memset( buf, 0, main_buf_len );
ret = mbedtls_ssl_read( ssl, buf, len );
#if defined(MBEDTLS_ECP_RESTARTABLE)
if( ret == MBEDTLS_ERR_SSL_CRYPTO_IN_PROGRESS )
continue;
#endif
if( ret == MBEDTLS_ERR_SSL_WANT_READ ||
ret == MBEDTLS_ERR_SSL_WANT_WRITE )
{
/* For event-driven IO, wait for socket to become available */
if( opt.event == 1 /* level triggered IO */ )
{
#if defined(MBEDTLS_TIMING_C)
idle( &server_fd, &timer, ret );
#else
idle( &server_fd, ret );
#endif
}
continue;
}
if( ret <= 0 )
{
switch( ret )
{
case MBEDTLS_ERR_SSL_PEER_CLOSE_NOTIFY:
mbedtls_printf( " connection was closed gracefully\n" );
ret = 0;
goto close_notify;
case 0:
case MBEDTLS_ERR_NET_CONN_RESET:
mbedtls_printf( " connection was reset by peer\n" );
ret = 0;
goto reconnect;
default:
mbedtls_printf( " mbedtls_ssl_read returned -0x%x\n",
-ret );
goto exit;
}
}
len = ret;
buf[len] = '\0';
mbedtls_printf( " %d bytes read\n\n%s", len, (char *) buf );
/* End of message should be detected according to the syntax of the
* application protocol (eg HTTP), just use a dummy test here. */
if( ret > 0 && buf[len-1] == '\n' )
{
ret = 0;
break;
}
}
while( 1 );
}
else /* Not stream, so datagram */
{
len = main_buf_len - 1;
memset( buf, 0, main_buf_len );
while( 1 )
{
ret = mbedtls_ssl_read( ssl, buf, len );
#if defined(MBEDTLS_ECP_RESTARTABLE)
if( ret == MBEDTLS_ERR_SSL_CRYPTO_IN_PROGRESS )
continue;
#endif
if( ret != MBEDTLS_ERR_SSL_WANT_READ &&
ret != MBEDTLS_ERR_SSL_WANT_WRITE )
break;
/* For event-driven IO, wait for socket to become available */
if( opt.event == 1 /* level triggered IO */ )
{
#if defined(MBEDTLS_TIMING_C)
idle( &server_fd, &timer, ret );
#else
idle( &server_fd, ret );
#endif
}
}
if( ret <= 0 )
{
switch( ret )
{
case MBEDTLS_ERR_SSL_TIMEOUT:
mbedtls_printf( " timeout\n" );
if( retry_left-- > 0 )
goto send_request;
goto exit;
case MBEDTLS_ERR_SSL_PEER_CLOSE_NOTIFY:
mbedtls_printf( " connection was closed gracefully\n" );
ret = 0;
goto close_notify;
default:
mbedtls_printf( " mbedtls_ssl_read returned -0x%x\n", -ret );
goto exit;
}
}
len = ret;
buf[len] = '\0';
mbedtls_printf( " %d bytes read\n\n%s", len, (char *) buf );
ret = 0;
}
/*
* 7b. Simulate hard reset and reconnect from same port?
*/
if( opt.reconnect_hard != 0 )
{
opt.reconnect_hard = 0;
mbedtls_printf( " . Restarting connection from same port..." );
fflush( stdout );
#if defined(MBEDTLS_X509_CRT_PARSE_C) && \
!defined(MBEDTLS_X509_REMOVE_VERIFY_CALLBACK)
memset( peer_crt_info, 0, sizeof( peer_crt_info ) );
#endif /* MBEDTLS_X509_CRT_PARSE_C && !MBEDTLS_X509_REMOVE_VERIFY_CALLBACK */
if( ( ret = mbedtls_ssl_session_reset( ssl ) ) != 0 )
{
mbedtls_printf( " failed\n ! mbedtls_ssl_session_reset returned -0x%x\n\n",
-ret );
goto exit;
}
while( ( ret = mbedtls_ssl_handshake( ssl ) ) != 0 )
{
if( ret != MBEDTLS_ERR_SSL_WANT_READ &&
ret != MBEDTLS_ERR_SSL_WANT_WRITE &&
ret != MBEDTLS_ERR_SSL_CRYPTO_IN_PROGRESS )
{
mbedtls_printf( " failed\n ! mbedtls_ssl_handshake returned -0x%x\n\n",
-ret );
goto exit;
}
/* For event-driven IO, wait for socket to become available */
if( opt.event == 1 /* level triggered IO */ )
{
#if defined(MBEDTLS_TIMING_C)
idle( &server_fd, &timer, ret );
#else
idle( &server_fd, ret );
#endif
}
}
mbedtls_printf( " ok\n" );
goto send_request;
}
/*
* 7c. Simulate serialize/deserialize and go back to data exchange
*/
#if defined(MBEDTLS_SSL_CONTEXT_SERIALIZATION)
if( opt.serialize != 0 )
{
size_t buf_len;
mbedtls_printf( " . Serializing live connection..." );
ret = mbedtls_ssl_context_save( ssl, NULL, 0, &buf_len );
if( ret != MBEDTLS_ERR_SSL_BUFFER_TOO_SMALL )
{
mbedtls_printf( " failed\n ! mbedtls_ssl_context_save returned "
"-0x%x\n\n", -ret );
goto exit;
}
if( ( context_buf = mbedtls_calloc( 1, buf_len ) ) == NULL )
{
mbedtls_printf( " failed\n ! Couldn't allocate buffer for "
"serialized context" );
goto exit;
}
context_buf_len = buf_len;
if( ( ret = mbedtls_ssl_context_save( ssl, context_buf,
buf_len, &buf_len ) ) != 0 )
{
mbedtls_printf( " failed\n ! mbedtls_ssl_context_save returned "
"-0x%x\n\n", -ret );
goto exit;
}
mbedtls_printf( " ok\n" );
if( opt.serialize == 1 )
{
/* nothing to do here, done by context_save() already */
mbedtls_printf( " . Context has been reset... ok" );
}
if( opt.serialize == 2 )
{
mbedtls_printf( " . Freeing and reinitializing context..." );
mbedtls_ssl_free( ssl );
mbedtls_ssl_init( ssl );
if( ( ret = mbedtls_ssl_setup( ssl, conf ) ) != 0 )
{
mbedtls_printf( " failed\n ! mbedtls_ssl_setup returned "
"-0x%x\n\n", -ret );
goto exit;
}
#if !defined(MBEDTLS_SSL_CONF_RECV) && \
!defined(MBEDTLS_SSL_CONF_SEND) && \
!defined(MBEDTLS_SSL_CONF_RECV_TIMEOUT)
mbedtls_ssl_set_bio( ssl, &io_ctx, send_cb, recv_cb,
opt.nbio == 0 ? recv_timeout_cb : NULL );
#else
mbedtls_ssl_set_bio_ctx( ssl, &server_fd );
#endif
#if defined(MBEDTLS_TIMING_C)
#if !defined(MBEDTLS_SSL_CONF_SET_TIMER) && \
!defined(MBEDTLS_SSL_CONF_GET_TIMER)
mbedtls_ssl_set_timer_cb( ssl, &timer,
mbedtls_timing_set_delay,
mbedtls_timing_get_delay );
#else
mbedtls_ssl_set_timer_cb_ctx( ssl, &timer );
#endif
#endif /* MBEDTLS_TIMING_C */
mbedtls_printf( " ok\n" );
}
mbedtls_printf( " . Deserializing connection..." );
if( ( ret = mbedtls_ssl_context_load( ssl, context_buf,
buf_len ) ) != 0 )
{
mbedtls_printf( "failed\n ! mbedtls_ssl_context_load returned "
"-0x%x\n\n", -ret );
goto exit;
}
mbedtls_free( context_buf );
context_buf = NULL;
context_buf_len = 0;
mbedtls_printf( " ok\n" );
}
#endif /* MBEDTLS_SSL_CONTEXT_SERIALIZATION */
/*
* 7d. Continue doing data exchanges?
*/
if( --opt.exchanges > 0 )
goto send_request;
/*
* 8. Done, cleanly close the connection
*/
close_notify:
mbedtls_printf( " . Closing the connection..." );
fflush( stdout );
/*
* Most of the time sending a close_notify before closing is the right
* thing to do. However, when the server already knows how many messages
* are expected and closes the connection by itself, this alert becomes
* redundant. Sometimes with DTLS this redundancy becomes a problem by
* leading to a race condition where the server might close the connection
* before seeing the alert, and since UDP is connection-less when the
* alert arrives it will be seen as a new connection, which will fail as
* the alert is clearly not a valid ClientHello. This may cause spurious
* failures in tests that use DTLS and resumption with ssl_server2 in
* ssl-opt.sh, avoided by enabling skip_close_notify client-side.
*/
if( opt.skip_close_notify == 0 )
{
/* No error checking, the connection might be closed already */
do ret = mbedtls_ssl_close_notify( ssl );
while( ret == MBEDTLS_ERR_SSL_WANT_WRITE );
ret = 0;
}
mbedtls_printf( " done\n" );
/*
* 9. Reconnect?
*/
reconnect:
if( opt.reconnect != 0 )
{
--opt.reconnect;
mbedtls_net_free( &server_fd );
#if defined(MBEDTLS_TIMING_C)
if( opt.reco_delay > 0 )
mbedtls_net_usleep( 1000000 * opt.reco_delay );
#endif
mbedtls_printf( " . Reconnecting with saved session..." );
#if defined(MBEDTLS_X509_CRT_PARSE_C) && \
!defined(MBEDTLS_X509_REMOVE_VERIFY_CALLBACK)
memset( peer_crt_info, 0, sizeof( peer_crt_info ) );
#endif /* MBEDTLS_X509_CRT_PARSE_C && !MBEDTLS_X509_REMOVE_VERIFY_CALLBACK */
if( ( ret = mbedtls_ssl_session_reset( ssl ) ) != 0 )
{
mbedtls_printf( " failed\n ! mbedtls_ssl_session_reset returned -0x%x\n\n",
-ret );
goto exit;
}
if( opt.reco_mode == 1 )
{
if( ( ret = mbedtls_ssl_session_load( &saved_session,
session_data,
session_data_len ) ) != 0 )
{
mbedtls_printf( " failed\n ! mbedtls_ssl_session_load returned -0x%x\n\n",
-ret );
goto exit;
}
}
#if !defined(MBEDTLS_SSL_NO_SESSION_RESUMPTION)
if( ( ret = mbedtls_ssl_set_session( ssl, &saved_session ) ) != 0 )
{
mbedtls_printf( " failed\n ! mbedtls_ssl_set_session returned -0x%x\n\n",
-ret );
goto exit;
}
#endif /* !MBEDTLS_SSL_NO_SESSION_RESUMPTION */
if( ( ret = mbedtls_net_connect( &server_fd,
opt.server_addr, opt.server_port,
opt.transport == MBEDTLS_SSL_TRANSPORT_STREAM ?
MBEDTLS_NET_PROTO_TCP : MBEDTLS_NET_PROTO_UDP ) ) != 0 )
{
mbedtls_printf( " failed\n ! mbedtls_net_connect returned -0x%x\n\n",
-ret );
goto exit;
}
if( opt.nbio > 0 )
ret = mbedtls_net_set_nonblock( &server_fd );
else
ret = mbedtls_net_set_block( &server_fd );
if( ret != 0 )
{
mbedtls_printf( " failed\n ! net_set_(non)block() returned -0x%x\n\n",
-ret );
goto exit;
}
while( ( ret = mbedtls_ssl_handshake( ssl ) ) != 0 )
{
if( ret != MBEDTLS_ERR_SSL_WANT_READ &&
ret != MBEDTLS_ERR_SSL_WANT_WRITE &&
ret != MBEDTLS_ERR_SSL_CRYPTO_IN_PROGRESS )
{
mbedtls_printf( " failed\n ! mbedtls_ssl_handshake returned -0x%x\n\n",
-ret );
goto exit;
}
}
mbedtls_printf( " ok\n" );
goto send_request;
}
/*
* Cleanup and exit
*/
exit:
#ifdef MBEDTLS_ERROR_C
if( ret != 0 )
{
char error_buf[100];
mbedtls_strerror( ret, error_buf, 100 );
mbedtls_printf("Last error was: -0x%X - %s\n\n", -ret, error_buf );
}
#endif
mbedtls_net_free( &server_fd );
#if defined(MBEDTLS_X509_CRT_PARSE_C)
mbedtls_x509_crt_free( clicert );
mbedtls_x509_crt_free( cacert );
mbedtls_pk_free( pkey );
#endif
mbedtls_ssl_session_free( &saved_session );
mbedtls_ssl_free( ssl );
mbedtls_ssl_config_free( conf );
#if defined(MBEDTLS_CTR_DRBG_C)
mbedtls_ctr_drbg_free( ctr_drbg );
#else
mbedtls_hmac_drbg_free( hmac_drbg );
#endif
mbedtls_entropy_free( entropy );
if( session_data != NULL )
mbedtls_platform_zeroize( session_data, session_data_len );
mbedtls_free( session_data );
#if defined(MBEDTLS_SSL_CONTEXT_SERIALIZATION)
if( context_buf != NULL )
mbedtls_platform_zeroize( context_buf, context_buf_len );
mbedtls_free( context_buf );
#endif
mbedtls_free( ssl );
mbedtls_free( conf );
mbedtls_free( entropy );
mbedtls_free( buf );
#if defined(MBEDTLS_CTR_DRBG_C)
mbedtls_free( ctr_drbg );
#else
mbedtls_free( hmac_drbg );
#endif
#if defined(MBEDTLS_X509_CRT_PARSE_C)
mbedtls_free( cacert );
mbedtls_free( clicert );
mbedtls_free( pkey );
#endif
#if defined(_WIN32)
mbedtls_printf( " + Press Enter to exit this program.\n" );
fflush( stdout ); getchar();
#endif
// Shell can not handle large exit numbers -> 1 for errors
if( ret < 0 )
ret = 1;
mbedtls_exit( ret );
}
#endif /* MBEDTLS_BIGNUM_C && MBEDTLS_ENTROPY_C && MBEDTLS_SSL_TLS_C &&
MBEDTLS_SSL_CLI_C && MBEDTLS_NET_C && MBEDTLS_RSA_C &&
( MBEDTLS_CTR_DRBG_C || MBEDTLS_HMAC_DRBG_C ) && MBEDTLS_TIMING_C */