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Ensure application data records are not kept when fully processed

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This commit fixes the following case: If a client is both expecting a
SERVER_HELLO and has an application data record that's partially
processed in flight (that's the situation the client gets into after
receiving a ServerHelloRequest followed by ApplicationData), a
subsequent call to mbedtls_ssl_read will set keep_current_message = 1
when seeing the unexpected application data, but not reset it to 0
after the application data has been processed. This commit fixes this.
This commit is contained in:
Hanno Becker 2017-06-09 10:51:37 +01:00
parent bfbc494114
commit cc019084b8
1 changed files with 3 additions and 0 deletions
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3
library/ssl_tls.c
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@ -6780,8 +6780,11 @@ int mbedtls_ssl_read( mbedtls_ssl_context *ssl, unsigned char *buf, size_t len )
ssl->in_msglen -= n; ssl->in_msglen -= n;
if( ssl->in_msglen == 0 ) if( ssl->in_msglen == 0 )
{
/* all bytes consumed */ /* all bytes consumed */
ssl->in_offt = NULL; ssl->in_offt = NULL;
ssl->keep_current_message = 0;
}
else else
/* more data available */ /* more data available */
ssl->in_offt += n; ssl->in_offt += n;