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mbedtls_ssl_conf_alpn_protocols: declare list elements as const

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This reflects the fact that the library will not modify the list, and allows
the list to be read from a const buffer.

Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
This commit is contained in:
Gilles Peskine
2025-05-27 19:45:29 +02:00
parent 2744a43977
commit c4949d1426
6 changed files with 15 additions and 9 deletions
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library/ssl_tls13_client.c
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@ -158,7 +158,7 @@ static int ssl_tls13_parse_alpn_ext(mbedtls_ssl_context *ssl,
/* Check that the server chosen protocol was in our list and save it */
MBEDTLS_SSL_CHK_BUF_READ_PTR(p, protocol_name_list_end, protocol_name_len);
for (const char **alpn = ssl->conf->alpn_list; *alpn != NULL; alpn++) {
for (const char *const *alpn = ssl->conf->alpn_list; *alpn != NULL; alpn++) {
if (protocol_name_len == strlen(*alpn) &&
memcmp(p, *alpn, protocol_name_len) == 0) {
ssl->alpn_chosen = *alpn;