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Add 80211 message elements

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This commit is contained in:
vemax78
2013-05-30 22:32:08 +02:00
parent 96eda13334
commit 01f3dbd66c
13 changed files with 543 additions and 5 deletions
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91
src/common/capwap_element_80211_stationkey.c Normal file
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#include "capwap.h"
#include "capwap_element.h"
/********************************************************************
0 1 2 3
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| MAC Address |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| MAC Address |A|C| Flags |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Pairwise TSC |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Pairwise TSC | Pairwise RSC |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Pairwise RSC |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Key...
+-+-+-+-+-+-+-+-
Type: 1038 for IEEE 802.11 Station Session Key
Length: >= 25
********************************************************************/
/* */
static void capwap_80211_stationkey_element_create(void* data, capwap_message_elements_handle handle, struct capwap_write_message_elements_ops* func) {
struct capwap_80211_stationkey_element* element = (struct capwap_80211_stationkey_element*)data;
ASSERT(data != NULL);
func->write_block(handle, element->address, CAPWAP_STATION_SESSION_KEY_ADDRESS_LENGTH);
func->write_u16(handle, element->flags);
func->write_block(handle, element->pairwisetsc, CAPWAP_STATION_SESSION_KEY_PAIRWISE_TSC_LENGTH);
func->write_block(handle, element->pairwisersc, CAPWAP_STATION_SESSION_KEY_PAIRWISE_RSC_LENGTH);
func->write_block(handle, element->key, element->keylength);
}
/* */
static void* capwap_80211_stationkey_element_parsing(capwap_message_elements_handle handle, struct capwap_read_message_elements_ops* func) {
unsigned short length;
struct capwap_80211_stationkey_element* data;
ASSERT(handle != NULL);
ASSERT(func != NULL);
length = func->read_ready(handle);
if (length < 25) {
capwap_logging_debug("Invalid IEEE 802.11 Station Session Key element");
return NULL;
}
length -= 20;
if (length > CAPWAP_STATION_SESSION_KEY_KEY_LENGTH) {
capwap_logging_debug("Invalid IEEE 802.11 Station Session Key element");
return NULL;
}
/* */
data = (struct capwap_80211_stationkey_element*)capwap_alloc(sizeof(struct capwap_80211_stationkey_element));
if (!data) {
capwap_outofmemory();
}
/* Retrieve data */
memset(data, 0, sizeof(struct capwap_80211_stationkey_element));
func->read_block(handle, data->address, CAPWAP_STATION_SESSION_KEY_ADDRESS_LENGTH);
func->read_u16(handle, &data->flags);
func->read_block(handle, data->pairwisetsc, CAPWAP_STATION_SESSION_KEY_PAIRWISE_TSC_LENGTH);
func->read_block(handle, data->pairwisersc, CAPWAP_STATION_SESSION_KEY_PAIRWISE_RSC_LENGTH);
data->keylength = length;
func->read_block(handle, data->key, data->keylength);
return data;
}
/* */
static void capwap_80211_stationkey_element_free(void* data) {
ASSERT(data != NULL);
capwap_free(data);
}
/* */
struct capwap_message_elements_ops capwap_element_80211_stationkey_ops = {
.create_message_element = capwap_80211_stationkey_element_create,
.parsing_message_element = capwap_80211_stationkey_element_parsing,
.free_parsed_message_element = capwap_80211_stationkey_element_free
};