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peap: introduce basic request-response flow

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Tim Kourt 2018-01-31 11:46:07 -08:00 committed by Denis Kenzior
parent 40898deb8b
commit 362771577b
1 changed files with 60 additions and 1 deletions
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61
src/eap-peap.c
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@ -48,12 +48,27 @@ struct eap_peap_state {
enum peap_version version; enum peap_version version;
struct l_tls *tunnel; struct l_tls *tunnel;
uint8_t *tx_pdu_buf;
size_t tx_pdu_buf_len;
char *ca_cert; char *ca_cert;
char *client_cert; char *client_cert;
char *client_key; char *client_key;
char *passphrase; char *passphrase;
}; };
static void eap_peap_free_tx_buffer(struct eap_state *eap)
{
struct eap_peap_state *peap = eap_get_data(eap);
if (!peap->tx_pdu_buf)
return;
l_free(peap->tx_pdu_buf);
peap->tx_pdu_buf = NULL;
peap->tx_pdu_buf_len = 0;
}
static void eap_peap_free(struct eap_state *eap) static void eap_peap_free(struct eap_state *eap)
{ {
struct eap_peap_state *peap = eap_get_data(eap); struct eap_peap_state *peap = eap_get_data(eap);
@ -63,6 +78,8 @@ static void eap_peap_free(struct eap_state *eap)
peap->tunnel = NULL; peap->tunnel = NULL;
} }
eap_peap_free_tx_buffer(eap);
eap_set_data(eap, NULL); eap_set_data(eap, NULL);
l_free(peap->ca_cert); l_free(peap->ca_cert);
@ -73,6 +90,11 @@ static void eap_peap_free(struct eap_state *eap)
l_free(peap); l_free(peap);
} }
static void eap_peap_send_response(struct eap_state *eap,
const uint8_t *pdu, size_t pdu_len)
{
}
static void eap_peap_tunnel_data_send(const uint8_t *data, size_t data_len, static void eap_peap_tunnel_data_send(const uint8_t *data, size_t data_len,
void *user_data) void *user_data)
{ {
@ -123,6 +145,12 @@ static bool eap_peap_tunnel_init(struct eap_state *eap)
return true; return true;
} }
static void eap_peap_handle_payload(struct eap_state *eap,
const uint8_t *pkt,
size_t pkt_len)
{
}
static bool eap_peap_validate_version(struct eap_state *eap, static bool eap_peap_validate_version(struct eap_state *eap,
uint8_t flags_version) uint8_t flags_version)
{ {
@ -147,6 +175,7 @@ static bool eap_peap_validate_version(struct eap_state *eap,
static void eap_peap_handle_request(struct eap_state *eap, static void eap_peap_handle_request(struct eap_state *eap,
const uint8_t *pkt, size_t len) const uint8_t *pkt, size_t len)
{ {
struct eap_peap_state *peap = eap_get_data(eap);
uint8_t flags_version; uint8_t flags_version;
if (len < 1) { if (len < 1) {
@ -161,10 +190,40 @@ static void eap_peap_handle_request(struct eap_state *eap,
goto error; goto error;
} }
if (flags_version & PEAP_FLAG_S) pkt += 1;
len -= 1;
/*
* tx_pdu_buf is used for the retransmission and needs to be cleared on
* a new request
*/
eap_peap_free_tx_buffer(eap);
if (flags_version & PEAP_FLAG_S) {
if (!eap_peap_tunnel_init(eap)) if (!eap_peap_tunnel_init(eap))
goto error; goto error;
/*
* PEAPv2 packets may include optional Outer TLVs (TLVs outside
* the TLS tunnel), which are only allowed in the first two
* messages before the version negotiation has occurred. Since
* PEAPv2 is not currently supported, we set len to zero to
* ignore them.
*/
len = 0;
}
if (!len)
goto send_response;
eap_peap_handle_payload(eap, pkt, len);
send_response:
if (!peap->tx_pdu_buf)
return;
eap_peap_send_response(eap, peap->tx_pdu_buf, peap->tx_pdu_buf_len);
return; return;
error: error: