freewtp/src/common/capwap_element_maximumlength.c

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2013-05-01 14:52:55 +02:00
#include "capwap.h"
#include "capwap_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
********************************************************************/
struct capwap_maximumlength_raw_element {
unsigned short length;
} __attribute__((__packed__));
/* */
struct capwap_message_element* capwap_maximumlength_element_create(void* data, unsigned long datalength) {
struct capwap_message_element* element;
ASSERT(data != NULL);
ASSERT(datalength == sizeof(struct capwap_maximumlength_element));
/* Alloc block of memory */
element = capwap_alloc(sizeof(struct capwap_message_element) + sizeof(struct capwap_maximumlength_raw_element));
if (!element) {
capwap_outofmemory();
}
/* Create message element */
memset(element, 0, sizeof(struct capwap_message_element) + sizeof(struct capwap_maximumlength_raw_element));
element->type = htons(CAPWAP_ELEMENT_MAXIMUMLENGTH);
element->length = htons(sizeof(struct capwap_maximumlength_raw_element));
((struct capwap_maximumlength_raw_element*)element->data)->length = htons(((struct capwap_maximumlength_element*)data)->length);
return element;
}
/* */
int capwap_maximumlength_element_validate(struct capwap_message_element* element) {
/* TODO */
return 1;
}
/* */
void* capwap_maximumlength_element_parsing(struct capwap_message_element* element) {
struct capwap_maximumlength_element* data;
ASSERT(element);
ASSERT(ntohs(element->type) == CAPWAP_ELEMENT_MAXIMUMLENGTH);
if (ntohs(element->length) != sizeof(struct capwap_maximumlength_raw_element)) {
return NULL;
}
/* */
data = (struct capwap_maximumlength_element*)capwap_alloc(sizeof(struct capwap_maximumlength_element));
if (!data) {
capwap_outofmemory();
}
/* */
data->length = ntohs(((struct capwap_maximumlength_raw_element*)element->data)->length);
return data;
}
/* */
void capwap_maximumlength_element_free(void* data) {
ASSERT(data != NULL);
capwap_free(data);
}