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TNC: Add more debug infor to EAP-TNC server state changes

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This commit is contained in:
Jouni Malinen 2010-04-18 12:24:02 +03:00
parent 11804a4ebc
commit e4cbe058d6
1 changed files with 60 additions and 26 deletions
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86
src/eap_server/eap_server_tnc.c
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@ -21,8 +21,10 @@
struct eap_tnc_data {
enum { START, CONTINUE, RECOMMENDATION, FRAG_ACK, WAIT_FRAG_ACK, DONE,
FAIL } state;
enum eap_tnc_state {
START, CONTINUE, RECOMMENDATION, FRAG_ACK, WAIT_FRAG_ACK, DONE,
FAIL
} state;
enum { ALLOW, ISOLATE, NO_ACCESS, NO_RECOMMENDATION } recommendation;
struct tncs_data *tncs;
struct wpabuf *in_buf;
@ -43,6 +45,38 @@ struct eap_tnc_data {
#define EAP_TNC_VERSION 1
static const char * eap_tnc_state_txt(enum eap_tnc_state state)
{
switch (state) {
case START:
return "START";
case CONTINUE:
return "CONTINUE";
case RECOMMENDATION:
return "RECOMMENDATION";
case FRAG_ACK:
return "FRAG_ACK";
case WAIT_FRAG_ACK:
return "WAIT_FRAG_ACK";
case DONE:
return "DONE";
case FAIL:
return "FAIL";
}
return "??";
}
static void eap_tnc_set_state(struct eap_tnc_data *data,
enum eap_tnc_state new_state)
{
wpa_printf(MSG_DEBUG, "EAP-TNC: %s -> %s",
eap_tnc_state_txt(data->state),
eap_tnc_state_txt(new_state));
data->state = new_state;
}
static void * eap_tnc_init(struct eap_sm *sm)
{
struct eap_tnc_data *data;
@ -50,7 +84,7 @@ static void * eap_tnc_init(struct eap_sm *sm)
data = os_zalloc(sizeof(*data));
if (data == NULL)
return NULL;
data->state = START;
eap_tnc_set_state(data, START);
data->tncs = tncs_init();
if (data->tncs == NULL) {
os_free(data);
@ -83,13 +117,13 @@ static struct wpabuf * eap_tnc_build_start(struct eap_sm *sm,
if (req == NULL) {
wpa_printf(MSG_ERROR, "EAP-TNC: Failed to allocate memory for "
"request");
data->state = FAIL;
eap_tnc_set_state(data, FAIL);
return NULL;
}
wpabuf_put_u8(req, EAP_TNC_FLAGS_START | EAP_TNC_VERSION);
data->state = CONTINUE;
eap_tnc_set_state(data, CONTINUE);
return req;
}
@ -148,17 +182,17 @@ static struct wpabuf * eap_tnc_build_recommendation(struct eap_sm *sm,
{
switch (data->recommendation) {
case ALLOW:
data->state = DONE;
eap_tnc_set_state(data, DONE);
break;
case ISOLATE:
data->state = FAIL;
eap_tnc_set_state(data, FAIL);
/* TODO: support assignment to a different VLAN */
break;
case NO_ACCESS:
data->state = FAIL;
eap_tnc_set_state(data, FAIL);
break;
case NO_RECOMMENDATION:
data->state = DONE;
eap_tnc_set_state(data, DONE);
break;
default:
wpa_printf(MSG_DEBUG, "EAP-TNC: Unknown recommendation");
@ -230,9 +264,9 @@ static struct wpabuf * eap_tnc_build_msg(struct eap_tnc_data *data, u8 id)
data->out_buf = NULL;
data->out_used = 0;
if (data->was_fail)
data->state = FAIL;
eap_tnc_set_state(data, FAIL);
else if (data->was_done)
data->state = DONE;
eap_tnc_set_state(data, DONE);
} else {
wpa_printf(MSG_DEBUG, "EAP-TNC: Sending out %lu bytes "
"(%lu more to send)", (unsigned long) send_len,
@ -242,7 +276,7 @@ static struct wpabuf * eap_tnc_build_msg(struct eap_tnc_data *data, u8 id)
data->was_fail = 1;
else if (data->state == DONE)
data->was_done = 1;
data->state = WAIT_FRAG_ACK;
eap_tnc_set_state(data, WAIT_FRAG_ACK);
}
return req;
@ -338,27 +372,27 @@ static void tncs_process(struct eap_tnc_data *data, struct wpabuf *inbuf)
switch (res) {
case TNCCS_RECOMMENDATION_ALLOW:
wpa_printf(MSG_DEBUG, "EAP-TNC: TNCS allowed access");
data->state = RECOMMENDATION;
eap_tnc_set_state(data, RECOMMENDATION);
data->recommendation = ALLOW;
break;
case TNCCS_RECOMMENDATION_NO_RECOMMENDATION:
wpa_printf(MSG_DEBUG, "EAP-TNC: TNCS has no recommendation");
data->state = RECOMMENDATION;
eap_tnc_set_state(data, RECOMMENDATION);
data->recommendation = NO_RECOMMENDATION;
break;
case TNCCS_RECOMMENDATION_ISOLATE:
wpa_printf(MSG_DEBUG, "EAP-TNC: TNCS requested isolation");
data->state = RECOMMENDATION;
eap_tnc_set_state(data, RECOMMENDATION);
data->recommendation = ISOLATE;
break;
case TNCCS_RECOMMENDATION_NO_ACCESS:
wpa_printf(MSG_DEBUG, "EAP-TNC: TNCS rejected access");
data->state = RECOMMENDATION;
eap_tnc_set_state(data, RECOMMENDATION);
data->recommendation = NO_ACCESS;
break;
case TNCCS_PROCESS_ERROR:
wpa_printf(MSG_DEBUG, "EAP-TNC: TNCS processing error");
data->state = FAIL;
eap_tnc_set_state(data, FAIL);
break;
default:
break;
@ -372,7 +406,7 @@ static int eap_tnc_process_cont(struct eap_tnc_data *data,
/* Process continuation of a pending message */
if (len > wpabuf_tailroom(data->in_buf)) {
wpa_printf(MSG_DEBUG, "EAP-TNC: Fragment overflow");
data->state = FAIL;
eap_tnc_set_state(data, FAIL);
return -1;
}
@ -446,7 +480,7 @@ static void eap_tnc_process(struct eap_sm *sm, void *priv,
if (flags & EAP_TNC_FLAGS_LENGTH_INCLUDED) {
if (end - pos < 4) {
wpa_printf(MSG_DEBUG, "EAP-TNC: Message underflow");
data->state = FAIL;
eap_tnc_set_state(data, FAIL);
return;
}
message_length = WPA_GET_BE32(pos);
@ -456,7 +490,7 @@ static void eap_tnc_process(struct eap_sm *sm, void *priv,
wpa_printf(MSG_DEBUG, "EAP-TNC: Invalid Message "
"Length (%d; %ld remaining in this msg)",
message_length, (long) (end - pos));
data->state = FAIL;
eap_tnc_set_state(data, FAIL);
return;
}
}
@ -467,29 +501,29 @@ static void eap_tnc_process(struct eap_sm *sm, void *priv,
if (len > 1) {
wpa_printf(MSG_DEBUG, "EAP-TNC: Unexpected payload "
"in WAIT_FRAG_ACK state");
data->state = FAIL;
eap_tnc_set_state(data, FAIL);
return;
}
wpa_printf(MSG_DEBUG, "EAP-TNC: Fragment acknowledged");
data->state = CONTINUE;
eap_tnc_set_state(data, CONTINUE);
return;
}
if (data->in_buf && eap_tnc_process_cont(data, pos, end - pos) < 0) {
data->state = FAIL;
eap_tnc_set_state(data, FAIL);
return;
}
if (flags & EAP_TNC_FLAGS_MORE_FRAGMENTS) {
if (eap_tnc_process_fragment(data, flags, message_length,
pos, end - pos) < 0)
data->state = FAIL;
eap_tnc_set_state(data, FAIL);
else
data->state = FRAG_ACK;
eap_tnc_set_state(data, FRAG_ACK);
return;
} else if (data->state == FRAG_ACK) {
wpa_printf(MSG_DEBUG, "EAP-TNC: All fragments received");
data->state = CONTINUE;
eap_tnc_set_state(data, CONTINUE);
}
if (data->in_buf == NULL) {