freewtp/lib/element_80211_updatewlan.c
2016-08-23 08:55:15 +02:00

114 lines
3.6 KiB
C

#include "capwap.h"
#include "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
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Radio ID | WLAN ID | Capability |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Key Index | Key Status | Key Length |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Key... |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
Type: 1044 for IEEE 802.11 Update WLAN
Length: >= 8
********************************************************************/
/* */
static void capwap_80211_updatewlan_element_create(void* data, capwap_message_elements_handle handle, struct capwap_write_message_elements_ops* func) {
struct capwap_80211_updatewlan_element* element = (struct capwap_80211_updatewlan_element*)data;
ASSERT(data != NULL);
func->write_u8(handle, element->radioid);
func->write_u8(handle, element->wlanid);
func->write_u16(handle, element->capability);
func->write_u8(handle, element->keyindex);
func->write_u8(handle, element->keystatus);
func->write_u16(handle, element->keylength);
if ((element->keylength > 0) && element->key) {
func->write_block(handle, element->key, element->keylength);
}
}
/* */
static void* capwap_80211_updatewlan_element_clone(void* data) {
struct capwap_80211_updatewlan_element* cloneelement;
ASSERT(data != NULL);
cloneelement = capwap_clone(data, sizeof(struct capwap_80211_updatewlan_element));
if (cloneelement->keylength > 0) {
cloneelement->key = capwap_clone(((struct capwap_80211_updatewlan_element*)data)->key, cloneelement->keylength);
}
return cloneelement;
}
/* */
static void capwap_80211_updatewlan_element_free(void* data) {
struct capwap_80211_updatewlan_element* element = (struct capwap_80211_updatewlan_element*)data;
ASSERT(data != NULL);
if (element->key) {
capwap_free(element->key);
}
capwap_free(data);
}
/* */
static void* capwap_80211_updatewlan_element_parsing(capwap_message_elements_handle handle, struct capwap_read_message_elements_ops* func) {
unsigned short length;
struct capwap_80211_updatewlan_element* data;
ASSERT(handle != NULL);
ASSERT(func != NULL);
length = func->read_ready(handle);
if (length < 8) {
log_printf(LOG_DEBUG, "Invalid IEEE 802.11 Update WLAN element");
return NULL;
}
length -= 8;
/* */
data = (struct capwap_80211_updatewlan_element*)capwap_alloc(sizeof(struct capwap_80211_updatewlan_element));
memset(data, 0, sizeof(struct capwap_80211_updatewlan_element));
/* Retrieve data */
func->read_u8(handle, &data->radioid);
func->read_u8(handle, &data->wlanid);
func->read_u16(handle, &data->capability);
func->read_u8(handle, &data->keyindex);
func->read_u8(handle, &data->keystatus);
func->read_u16(handle, &data->keylength);
if (length != data->keylength) {
capwap_80211_updatewlan_element_free((void*)data);
log_printf(LOG_DEBUG, "Invalid IEEE 802.11 Update WLAN element");
return NULL;
} else if (data->keylength > 0) {
data->key = (uint8_t*)capwap_alloc(data->keylength);
func->read_block(handle, data->key, data->keylength);
}
return data;
}
/* */
const struct capwap_message_elements_ops capwap_element_80211_updatewlan_ops = {
.category = CAPWAP_MESSAGE_ELEMENT_SINGLE,
.create = capwap_80211_updatewlan_element_create,
.parse = capwap_80211_updatewlan_element_parsing,
.clone = capwap_80211_updatewlan_element_clone,
.free = capwap_80211_updatewlan_element_free
};