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Make SSL error code more generic

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It's undesirable to have users of the SSL layer check for an error code
specific to a lower-level layer, both out of general layering principles, and
also because if we later make another crypto module gain resume capabilities,
we would need to change the contract again (checking for a new module-specific
error code).
This commit is contained in:
Manuel Pégourié-Gonnard 2018-06-13 12:02:12 +02:00
parent b5d668a7a7
commit 558da9c3fe
6 changed files with 34 additions and 11 deletions
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2
include/mbedtls/error.h
View file

@ -90,7 +90,7 @@
* ECP 4 10 (Started from top)
* MD 5 5
* CIPHER 6 8
* SSL 6 17 (Started from top)
* SSL 6 22 (Started from top)
* SSL 7 31
*
* Module dependent error code (5 bits 0x.00.-0x.F8.)

1
include/mbedtls/ssl.h
View file

@ -120,6 +120,7 @@
#define MBEDTLS_ERR_SSL_NON_FATAL -0x6680 /**< The alert message received indicates a non-fatal error. */
#define MBEDTLS_ERR_SSL_INVALID_VERIFY_HASH -0x6600 /**< Couldn't set the hash for verifying CertificateVerify */
#define MBEDTLS_ERR_SSL_CONTINUE_PROCESSING -0x6580 /**< Internal-only message signaling that further message-processing should be done */
#define MBEDTLS_ERR_SSL_CRYPTO_IN_PROGRESS -0x6500 /**< A cryptographic operation is in progress. Try again later. */
/*
* Various constants

2
library/error.c
View file

@ -499,6 +499,8 @@ void mbedtls_strerror( int ret, char *buf, size_t buflen )
mbedtls_snprintf( buf, buflen, "SSL - Couldn't set the hash for verifying CertificateVerify" );
if( use_ret == -(MBEDTLS_ERR_SSL_CONTINUE_PROCESSING) )
mbedtls_snprintf( buf, buflen, "SSL - Internal-only message signaling that further message-processing should be done" );
if( use_ret == -(MBEDTLS_ERR_SSL_CRYPTO_IN_PROGRESS) )
mbedtls_snprintf( buf, buflen, "SSL - A cryptographic operation is in progress. Try again later" );
#endif /* MBEDTLS_SSL_TLS_C */
#if defined(MBEDTLS_X509_USE_C) || defined(MBEDTLS_X509_CREATE_C)

20
library/ssl_cli.c
View file

@ -2055,6 +2055,10 @@ static int ssl_parse_server_ecdh_params( mbedtls_ssl_context *ssl,
(const unsigned char **) p, end ) ) != 0 )
{
MBEDTLS_SSL_DEBUG_RET( 1, ( "mbedtls_ecdh_read_params" ), ret );
#if defined(MBEDTLS_SSL__ECP_RESTARTABLE)
if( ret == MBEDTLS_ERR_ECP_IN_PROGRESS )
ret = MBEDTLS_ERR_SSL_CRYPTO_IN_PROGRESS;
#endif
return( ret );
}
@ -2619,6 +2623,10 @@ start_processing:
mbedtls_ssl_send_alert_message( ssl, MBEDTLS_SSL_ALERT_LEVEL_FATAL,
MBEDTLS_SSL_ALERT_MSG_DECRYPT_ERROR );
MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_pk_verify", ret );
#if defined(MBEDTLS_SSL__ECP_RESTARTABLE)
if( ret == MBEDTLS_ERR_ECP_IN_PROGRESS )
ret = MBEDTLS_ERR_SSL_CRYPTO_IN_PROGRESS;
#endif
return( ret );
}
}
@ -2933,6 +2941,10 @@ static int ssl_write_client_key_exchange( mbedtls_ssl_context *ssl )
if( ret != 0 )
{
MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_ecdh_make_public", ret );
#if defined(MBEDTLS_SSL__ECP_RESTARTABLE)
if( ret == MBEDTLS_ERR_ECP_IN_PROGRESS )
ret = MBEDTLS_ERR_SSL_CRYPTO_IN_PROGRESS;
#endif
return( ret );
}
@ -2956,6 +2968,10 @@ ecdh_calc_secret:
ssl->conf->f_rng, ssl->conf->p_rng ) ) != 0 )
{
MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_ecdh_calc_secret", ret );
#if defined(MBEDTLS_SSL__ECP_RESTARTABLE)
if( ret == MBEDTLS_ERR_ECP_IN_PROGRESS )
ret = MBEDTLS_ERR_SSL_CRYPTO_IN_PROGRESS;
#endif
return( ret );
}
@ -3313,6 +3329,10 @@ sign:
ssl->conf->f_rng, ssl->conf->p_rng, rs_ctx ) ) != 0 )
{
MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_pk_sign", ret );
#if defined(MBEDTLS_SSL__ECP_RESTARTABLE)
if( ret == MBEDTLS_ERR_ECP_IN_PROGRESS )
ret = MBEDTLS_ERR_SSL_CRYPTO_IN_PROGRESS;
#endif
return( ret );
}

2
library/ssl_tls.c
View file

@ -4683,7 +4683,7 @@ crt_verify:
#if defined(MBEDTLS_SSL__ECP_RESTARTABLE)
if( ret == MBEDTLS_ERR_ECP_IN_PROGRESS )
return( ret );
return( MBEDTLS_ERR_SSL_CRYPTO_IN_PROGRESS );
#endif
/*

18
programs/ssl/ssl_client2.c
View file

@ -1516,7 +1516,7 @@ int main( int argc, char *argv[] )
{
if( ret != MBEDTLS_ERR_SSL_WANT_READ &&
ret != MBEDTLS_ERR_SSL_WANT_WRITE &&
ret != MBEDTLS_ERR_ECP_IN_PROGRESS )
ret != MBEDTLS_ERR_SSL_CRYPTO_IN_PROGRESS )
{
mbedtls_printf( " failed\n ! mbedtls_ssl_handshake returned -0x%x\n",
-ret );
@ -1533,7 +1533,7 @@ int main( int argc, char *argv[] )
}
#if defined(MBEDTLS_ECP_RESTARTABLE)
if( ret == MBEDTLS_ERR_ECP_IN_PROGRESS )
if( ret == MBEDTLS_ERR_SSL_CRYPTO_IN_PROGRESS )
continue;
#endif
@ -1630,7 +1630,7 @@ int main( int argc, char *argv[] )
{
if( ret != MBEDTLS_ERR_SSL_WANT_READ &&
ret != MBEDTLS_ERR_SSL_WANT_WRITE &&
ret != MBEDTLS_ERR_ECP_IN_PROGRESS )
ret != MBEDTLS_ERR_SSL_CRYPTO_IN_PROGRESS )
{
mbedtls_printf( " failed\n ! mbedtls_ssl_renegotiate returned %d\n\n",
ret );
@ -1695,7 +1695,7 @@ send_request:
{
if( ret != MBEDTLS_ERR_SSL_WANT_READ &&
ret != MBEDTLS_ERR_SSL_WANT_WRITE &&
ret != MBEDTLS_ERR_ECP_IN_PROGRESS )
ret != MBEDTLS_ERR_SSL_CRYPTO_IN_PROGRESS )
{
mbedtls_printf( " failed\n ! mbedtls_ssl_write returned -0x%x\n\n",
-ret );
@ -1721,7 +1721,7 @@ send_request:
ret = mbedtls_ssl_write( &ssl, buf, len );
#if defined(MBEDTLS_ECP_RESTARTABLE)
if( ret == MBEDTLS_ERR_ECP_IN_PROGRESS )
if( ret == MBEDTLS_ERR_SSL_CRYPTO_IN_PROGRESS )
continue;
#endif
@ -1779,7 +1779,7 @@ send_request:
ret = mbedtls_ssl_read( &ssl, buf, len );
#if defined(MBEDTLS_ECP_RESTARTABLE)
if( ret == MBEDTLS_ERR_ECP_IN_PROGRESS )
if( ret == MBEDTLS_ERR_SSL_CRYPTO_IN_PROGRESS )
continue;
#endif
@ -1844,7 +1844,7 @@ send_request:
ret = mbedtls_ssl_read( &ssl, buf, len );
#if defined(MBEDTLS_ECP_RESTARTABLE)
if( ret == MBEDTLS_ERR_ECP_IN_PROGRESS )
if( ret == MBEDTLS_ERR_SSL_CRYPTO_IN_PROGRESS )
continue;
#endif
@ -1911,7 +1911,7 @@ send_request:
{
if( ret != MBEDTLS_ERR_SSL_WANT_READ &&
ret != MBEDTLS_ERR_SSL_WANT_WRITE &&
ret != MBEDTLS_ERR_ECP_IN_PROGRESS )
ret != MBEDTLS_ERR_SSL_CRYPTO_IN_PROGRESS )
{
mbedtls_printf( " failed\n ! mbedtls_ssl_handshake returned -0x%x\n\n",
-ret );
@ -2010,7 +2010,7 @@ reconnect:
{
if( ret != MBEDTLS_ERR_SSL_WANT_READ &&
ret != MBEDTLS_ERR_SSL_WANT_WRITE &&
ret != MBEDTLS_ERR_ECP_IN_PROGRESS )
ret != MBEDTLS_ERR_SSL_CRYPTO_IN_PROGRESS )
{
mbedtls_printf( " failed\n ! mbedtls_ssl_handshake returned -0x%x\n\n",
-ret );