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Introduce additional flags for buffer upsizing and downsizing

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Signed-off-by: Andrzej Kurek <andrzej.kurek@arm.com>
This commit is contained in:
Andrzej Kurek 2020-10-22 11:12:07 +02:00
parent 79db2f14da
commit cd9a6ff3c1
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GPG Key ID: 89A90840DC388527
1 changed files with 7 additions and 4 deletions
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11
library/ssl_tls.c
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@ -667,6 +667,8 @@ static int resize_buffer( unsigned char **buffer, size_t len_new, size_t *len_ol
return 0;
}
#define BUFFER_UPSIZING 0
#define BUFFER_DOWNSIZING 1
static void handle_buffer_resizing( mbedtls_ssl_context *ssl, int downsizing,
uint32_t in_buf_new_len,
uint32_t out_buf_new_len )
@ -8874,8 +8876,8 @@ static int ssl_handshake_init( mbedtls_ssl_context *ssl )
#if defined(MBEDTLS_SSL_VARIABLE_BUFFER_LENGTH)
/* If the buffers are too small - reallocate */
handle_buffer_resizing( ssl, 0, MBEDTLS_SSL_IN_BUFFER_LEN,
MBEDTLS_SSL_OUT_BUFFER_LEN );
handle_buffer_resizing( ssl, BUFFER_UPSIZING, MBEDTLS_SSL_IN_BUFFER_LEN,
MBEDTLS_SSL_OUT_BUFFER_LEN );
#endif
/* All pointers should exist and can be directly freed without issue */
@ -12066,8 +12068,9 @@ void mbedtls_ssl_handshake_free( mbedtls_ssl_context *ssl )
* processes datagrams and the fact that a datagram is allowed to have
* several records in it, it is possible that the I/O buffers are not
* empty at this stage */
handle_buffer_resizing( ssl, 1, mbedtls_ssl_get_input_buflen( ssl ),
mbedtls_ssl_get_output_buflen( ssl ) );
handle_buffer_resizing( ssl, BUFFER_DOWNSIZING,
mbedtls_ssl_get_input_buflen( ssl ),
mbedtls_ssl_get_output_buflen( ssl ) );
#endif
}