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net/sock/dtls: add RPK callback for credential selection

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This commit is contained in:
Leandro Lanzieri 2021-03-10 12:24:50 +01:00
parent 81892ee389
commit 8b57b87258
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GPG Key ID: F4E9A721761C7593
3 changed files with 31 additions and 0 deletions
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7
pkg/tinydtls/contrib/sock_dtls.c
View File

@ -289,6 +289,7 @@ int sock_dtls_create(sock_dtls_t *sock, sock_udp_t *udp_sock,
sock->buffer.data = NULL;
sock->psk_hint[0] = '\0';
sock->client_psk_cb = NULL;
sock->rpk_cb = NULL;
#ifdef SOCK_HAS_ASYNC
sock->async_cb = NULL;
sock->buf_ctx = NULL;
@ -374,6 +375,12 @@ void sock_dtls_set_client_psk_cb(sock_dtls_t *sock, sock_dtls_client_psk_cb_t cb
sock->client_psk_cb = cb;
}
void sock_dtls_set_rpk_cb(sock_dtls_t *sock, sock_dtls_rpk_cb_t cb)
{
assert(sock);
sock->rpk_cb = cb;
}
sock_udp_t *sock_dtls_get_udp_sock(sock_dtls_t *sock)
{
assert(sock);

1
pkg/tinydtls/include/sock_dtls_types.h
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@ -80,6 +80,7 @@ struct sock_dtls {
unsigned tags_len; /**< Number of tags in the list 'tags' */
dtls_peer_type role; /**< DTLS role of the socket */
sock_dtls_client_psk_cb_t client_psk_cb;/**< Callback to determine PSK credential for session */
sock_dtls_rpk_cb_t rpk_cb; /**< Callback to determine RPK credential for session */
};
/**

23
sys/include/net/sock/dtls/creds.h
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@ -63,6 +63,20 @@ typedef credman_tag_t (*sock_dtls_client_psk_cb_t)(sock_dtls_t *sock, sock_udp_e
credman_tag_t tags[], unsigned tags_len,
const char* hint, size_t hint_len);
/**
* @brief Raw Public Key callback. Called during handshake to determine the session credential.
*
* @param[in] sock DTLS sock object
* @param[in] ep Remote UDP endpoint representing the session
* @param[in] tags List of credential tags available for @p sock
* @param[in] tags_len Number of credentials in @p tags
*
* @return Tag of the credential to use when a suitable one is found
* @retval CREDMAN_TAG_EMPTY otherwise
*/
typedef credman_tag_t (*sock_dtls_rpk_cb_t)(sock_dtls_t *sock, sock_udp_ep_t *ep,
credman_tag_t tags[], unsigned tags_len);
/**
* @brief Sets the PSK Identity hint to be sent to clients during handshake.
*
@ -121,6 +135,15 @@ size_t sock_dtls_get_credentials(sock_dtls_t *sock, const credman_tag_t **out);
*/
void sock_dtls_set_client_psk_cb(sock_dtls_t *sock, sock_dtls_client_psk_cb_t cb);
/**
* @brief Sets the callback function to specify a credential to use for a given connection,
* when using Raw Public Keys.
*
* @param[in] sock The DTLS sock object to set the callback to.
* @param[in] cb Callback to set.
*/
void sock_dtls_set_rpk_cb(sock_dtls_t *sock, sock_dtls_rpk_cb_t cb);
#ifdef __cplusplus
}
#endif