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

69 lines
1.8 KiB
C

#include "capwap.h"
#include "element.h"
/********************************************************************
0 1
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Maximum Message Length |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
Type: 29 for Maximum Message Length
Length: 2
********************************************************************/
/* */
static void capwap_maximumlength_element_create(void* data, capwap_message_elements_handle handle, struct capwap_write_message_elements_ops* func) {
struct capwap_maximumlength_element* element = (struct capwap_maximumlength_element*)data;
ASSERT(data != NULL);
/* */
func->write_u16(handle, element->length);
}
/* */
static void* capwap_maximumlength_element_parsing(capwap_message_elements_handle handle, struct capwap_read_message_elements_ops* func) {
struct capwap_maximumlength_element* data;
ASSERT(handle != NULL);
ASSERT(func != NULL);
if (func->read_ready(handle) != 2) {
log_printf(LOG_DEBUG, "Invalid Maxium Message Length element: underbuffer");
return NULL;
}
/* Retrieve data */
data = (struct capwap_maximumlength_element*)capwap_alloc(sizeof(struct capwap_maximumlength_element));
func->read_u16(handle, &data->length);
return data;
}
/* */
static void* capwap_maximumlength_element_clone(void* data) {
ASSERT(data != NULL);
return capwap_clone(data, sizeof(struct capwap_maximumlength_element));
}
/* */
static void capwap_maximumlength_element_free(void* data) {
ASSERT(data != NULL);
capwap_free(data);
}
/* */
const struct capwap_message_elements_ops capwap_element_maximumlength_ops = {
.category = CAPWAP_MESSAGE_ELEMENT_SINGLE,
.create = capwap_maximumlength_element_create,
.parse = capwap_maximumlength_element_parsing,
.clone = capwap_maximumlength_element_clone,
.free = capwap_maximumlength_element_free
};