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Improve comments explaining legacy_methods_compression handling

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Signed-off-by: Waleed Elmelegy <waleed.elmelegy@arm.com>
This commit is contained in:
Waleed Elmelegy 2024-06-25 18:16:16 +01:00
parent 0a9e8a3a18
commit e2a6aa5369
1 changed files with 4 additions and 5 deletions
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9
library/ssl_tls13_server.c
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@ -1355,17 +1355,16 @@ static int ssl_tls13_parse_client_hello(mbedtls_ssl_context *ssl,
* compression methods and the length of the extensions.
*
* cipher_suites cipher_suites_len bytes
* legacy_compression_methods 2 bytes
* extensions_len 2 bytes
* legacy_compression_methods length 1 byte
*/
MBEDTLS_SSL_CHK_BUF_READ_PTR(p, end, cipher_suites_len + 2 + 2);
MBEDTLS_SSL_CHK_BUF_READ_PTR(p, end, cipher_suites_len + 1);
p += cipher_suites_len;
cipher_suites_end = p;
/* Check if we have enough data for legacy_compression_methods
* and a length byte.
* and the length of the extensions (2 bytes).
*/
MBEDTLS_SSL_CHK_BUF_READ_PTR(p, end, 1 + p[0]);
MBEDTLS_SSL_CHK_BUF_READ_PTR(p + 1, end, p[0] + 2);
/*
* Search for the supported versions extension and parse it to determine