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Add mbedtls_ssl_session_set_alpn() function

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Signed-off-by: Waleed Elmelegy <waleed.elmelegy@arm.com>
This commit is contained in:
Waleed Elmelegy
2024-03-06 19:09:41 +00:00
parent 2824a209bc
commit 883f77cb08
6 changed files with 71 additions and 33 deletions
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7
library/ssl_misc.h
View File

@ -2852,6 +2852,13 @@ int mbedtls_ssl_session_set_hostname(mbedtls_ssl_session *session,
const char *hostname);
#endif
#if defined(MBEDTLS_SSL_SRV_C) && defined(MBEDTLS_SSL_EARLY_DATA) && \
defined(MBEDTLS_SSL_ALPN)
MBEDTLS_CHECK_RETURN_CRITICAL
int mbedtls_ssl_session_set_alpn(mbedtls_ssl_session *session,
const char *alpn);
#endif
#if defined(MBEDTLS_SSL_PROTO_TLS1_3) && defined(MBEDTLS_SSL_SESSION_TICKETS)
#define MBEDTLS_SSL_TLS1_3_MAX_ALLOWED_TICKET_LIFETIME (604800)

56
library/ssl_tls.c
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@ -2450,6 +2450,7 @@ mbedtls_ssl_mode_t mbedtls_ssl_get_mode_from_ciphersuite(
#if defined(MBEDTLS_USE_PSA_CRYPTO) || defined(MBEDTLS_SSL_PROTO_TLS1_3)
psa_status_t mbedtls_ssl_cipher_to_psa(mbedtls_cipher_type_t mbedtls_cipher_type,
size_t taglen,
psa_algorithm_t *alg,
@ -3771,8 +3772,8 @@ static int ssl_tls13_session_save(const mbedtls_ssl_session *session,
#if defined(MBEDTLS_SSL_SRV_C) && \
defined(MBEDTLS_SSL_EARLY_DATA) && defined(MBEDTLS_SSL_ALPN)
const uint8_t alpn_len = (session->alpn == NULL) ?
0 : (uint8_t) strlen(session->alpn) + 1;
const uint8_t alpn_len = (session->ticket_alpn == NULL) ?
0 : (uint8_t) strlen(session->ticket_alpn) + 1;
#endif
size_t needed = 4 /* ticket_age_add */
+ 1 /* ticket_flags */
@ -3858,7 +3859,7 @@ static int ssl_tls13_session_save(const mbedtls_ssl_session *session,
*p++ = alpn_len;
if (alpn_len > 0) {
/* save chosen alpn */
memcpy(p, session->alpn, alpn_len);
memcpy(p, session->ticket_alpn, alpn_len);
p += alpn_len;
}
#endif /* MBEDTLS_SSL_EARLY_DATA && MBEDTLS_SSL_ALPN */
@ -3951,6 +3952,7 @@ static int ssl_tls13_session_load(mbedtls_ssl_session *session,
#if defined(MBEDTLS_SSL_EARLY_DATA) && defined(MBEDTLS_SSL_ALPN)
uint8_t alpn_len;
int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
if (end - p < 1) {
return MBEDTLS_ERR_SSL_BAD_INPUT_DATA;
@ -3960,12 +3962,12 @@ static int ssl_tls13_session_load(mbedtls_ssl_session *session,
if (end - p < alpn_len) {
return MBEDTLS_ERR_SSL_BAD_INPUT_DATA;
}
if (alpn_len > 0) {
session->alpn = mbedtls_calloc(alpn_len, sizeof(char));
if (session->alpn == NULL) {
return MBEDTLS_ERR_SSL_ALLOC_FAILED;
ret = mbedtls_ssl_session_set_alpn(session, (const char *) p);
if (ret != 0) {
return ret;
}
memcpy(session->alpn, p, alpn_len);
p += alpn_len;
}
#endif /* MBEDTLS_SSL_EARLY_DATA && MBEDTLS_SSL_ALPN */
@ -4917,11 +4919,12 @@ void mbedtls_ssl_session_free(mbedtls_ssl_session *session)
defined(MBEDTLS_SSL_SERVER_NAME_INDICATION)
mbedtls_free(session->hostname);
#endif
mbedtls_free(session->ticket);
#endif
#if defined(MBEDTLS_SSL_EARLY_DATA) && defined(MBEDTLS_SSL_ALPN) && \
defined(MBEDTLS_SSL_SRV_C)
mbedtls_free(session->alpn);
#endif
mbedtls_free(session->ticket);
mbedtls_free(session->ticket_alpn);
#endif
mbedtls_platform_zeroize(session, sizeof(mbedtls_ssl_session));
@ -9870,4 +9873,37 @@ int mbedtls_ssl_session_set_hostname(mbedtls_ssl_session *session,
MBEDTLS_SSL_SERVER_NAME_INDICATION &&
MBEDTLS_SSL_CLI_C */
#if defined(MBEDTLS_SSL_SRV_C) && defined(MBEDTLS_SSL_EARLY_DATA) && \
defined(MBEDTLS_SSL_ALPN)
int mbedtls_ssl_session_set_alpn(mbedtls_ssl_session *session,
const char *alpn)
{
size_t alpn_len = 0;
if (alpn != NULL) {
alpn_len = strlen(alpn);
if (alpn_len > MBEDTLS_SSL_MAX_ALPN_NAME_LEN) {
return MBEDTLS_ERR_SSL_BAD_INPUT_DATA;
}
}
if (session->ticket_alpn != NULL) {
mbedtls_zeroize_and_free(session->ticket_alpn,
strlen(session->ticket_alpn));
}
if (alpn == NULL) {
session->ticket_alpn = NULL;
} else {
session->ticket_alpn = mbedtls_calloc(strlen(alpn) + 1, sizeof(char));
if (session->ticket_alpn == NULL) {
return MBEDTLS_ERR_SSL_ALLOC_FAILED;
}
memcpy(session->ticket_alpn, alpn, strlen(alpn) + 1);
}
return 0;
}
#endif /* MBEDTLS_SSL_SRV_C && MBEDTLS_SSL_EARLY_DATA && MBEDTLS_SSL_ALPN */
#endif /* MBEDTLS_SSL_TLS_C */

19
library/ssl_tls13_server.c
View File

@ -469,12 +469,10 @@ static int ssl_tls13_session_copy_ticket(mbedtls_ssl_session *dst,
dst->max_early_data_size = src->max_early_data_size;
#if defined(MBEDTLS_SSL_ALPN)
if (src->alpn != NULL) {
dst->alpn = mbedtls_calloc(strlen(src->alpn) + 1, sizeof(char));
if (dst->alpn == NULL) {
return MBEDTLS_ERR_SSL_ALLOC_FAILED;
}
memcpy(dst->alpn, src->alpn, strlen(src->alpn) + 1);
int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
ret = mbedtls_ssl_session_set_alpn(dst, src->ticket_alpn);
if (ret != 0) {
return ret;
}
#endif /* MBEDTLS_SSL_ALPN */
#endif /* MBEDTLS_SSL_EARLY_DATA*/
@ -3148,12 +3146,9 @@ static int ssl_tls13_prepare_new_session_ticket(mbedtls_ssl_context *ssl,
MBEDTLS_SSL_PRINT_TICKET_FLAGS(4, session->ticket_flags);
#if defined(MBEDTLS_SSL_EARLY_DATA) && defined(MBEDTLS_SSL_ALPN)
if (ssl->alpn_chosen != NULL) {
session->alpn = mbedtls_calloc(strlen(ssl->alpn_chosen) + 1, sizeof(char));
if (session->alpn == NULL) {
return MBEDTLS_ERR_SSL_ALLOC_FAILED;
}
memcpy(session->alpn, ssl->alpn_chosen, strlen(ssl->alpn_chosen) + 1);
ret = mbedtls_ssl_session_set_alpn(session, ssl->alpn_chosen);
if (ret != 0) {
return ret;
}
#endif