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

112 lines
3.3 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
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Num of Entries| Length | MAC Address ...
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
Type: 7 for Add MAC ACL Entry
Length: >= 8
********************************************************************/
/* */
static void capwap_addmacacl_element_create(void* data, capwap_message_elements_handle handle, struct capwap_write_message_elements_ops* func) {
struct capwap_addmacacl_element* element = (struct capwap_addmacacl_element*)data;
ASSERT(data != NULL);
ASSERT(element->entry > 0);
ASSERT(IS_VALID_MACADDRESS_LENGTH(element->length));
func->write_u8(handle, element->entry);
func->write_u8(handle, element->length);
func->write_block(handle, element->address, element->entry * element->length);
}
/* */
static void* capwap_addmacacl_element_clone(void* data) {
struct capwap_addmacacl_element* cloneelement;
ASSERT(data != NULL);
cloneelement = capwap_clone(data, sizeof(struct capwap_addmacacl_element));
if (cloneelement->entry > 0) {
cloneelement->address = capwap_clone(((struct capwap_addmacacl_element*)data)->address, cloneelement->entry * cloneelement->length);
}
return cloneelement;
}
/* */
static void capwap_addmacacl_element_free(void* data) {
struct capwap_addmacacl_element* element = (struct capwap_addmacacl_element*)data;
ASSERT(data != NULL);
if (element->address) {
capwap_free(element->address);
}
capwap_free(data);
}
/* */
static void* capwap_addmacacl_element_parsing(capwap_message_elements_handle handle, struct capwap_read_message_elements_ops* func) {
unsigned short length;
struct capwap_addmacacl_element* data;
ASSERT(handle != NULL);
ASSERT(func != NULL);
length = func->read_ready(handle);
if (length < 8) {
log_printf(LOG_DEBUG, "Invalid Add MAC ACL Entry element: underbuffer");
return NULL;
}
length -= 2;
/* */
data = (struct capwap_addmacacl_element*)capwap_alloc(sizeof(struct capwap_addmacacl_element));
memset(data, 0, sizeof(struct capwap_addmacacl_element));
/* Retrieve data */
func->read_u8(handle, &data->entry);
func->read_u8(handle, &data->length);
if (!data->entry) {
capwap_addmacacl_element_free((void*)data);
log_printf(LOG_DEBUG, "Invalid Add MAC ACL Entry element: invalid entry");
return NULL;
} else if (!IS_VALID_MACADDRESS_LENGTH(data->length)) {
capwap_addmacacl_element_free((void*)data);
log_printf(LOG_DEBUG, "Invalid Add MAC ACL Entry element: invalid length");
return NULL;
}
if (length != (data->entry * data->length)) {
capwap_addmacacl_element_free((void*)data);
log_printf(LOG_DEBUG, "Invalid Add MAC ACL Entry element: invalid total length");
return NULL;
}
data->address = (uint8_t*)capwap_alloc(length);
func->read_block(handle, data->address, length);
return data;
}
/* */
const struct capwap_message_elements_ops capwap_element_addmacacl_ops = {
.category = CAPWAP_MESSAGE_ELEMENT_SINGLE,
.create = capwap_addmacacl_element_create,
.parse = capwap_addmacacl_element_parsing,
.clone = capwap_addmacacl_element_clone,
.free = capwap_addmacacl_element_free
};