94 lines
2.8 KiB
C
94 lines
2.8 KiB
C
#include "capwap.h"
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#include "capwap_element.h"
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/********************************************************************
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0 1 2 3
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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
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+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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| Reason | Length | Message Element...
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+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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Type: 34 for Returned Message Element
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Length: >= 6
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********************************************************************/
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struct capwap_returnedmessage_raw_element {
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unsigned char reason;
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unsigned char length;
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char message[0];
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} __attribute__((__packed__));
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/* */
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struct capwap_message_element* capwap_returnedmessage_element_create(void* data, unsigned long datalength) {
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unsigned short length;
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struct capwap_message_element* element;
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struct capwap_returnedmessage_raw_element* dataraw;
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struct capwap_returnedmessage_element* dataelement = (struct capwap_returnedmessage_element*)data;
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ASSERT(data != NULL);
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ASSERT(datalength == sizeof(struct capwap_returnedmessage_element));
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/* Alloc block of memory */
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length = sizeof(struct capwap_returnedmessage_raw_element) + dataelement->length;
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element = capwap_alloc(sizeof(struct capwap_message_element) + length);
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if (!element) {
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capwap_outofmemory();
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}
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/* Create message element */
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memset(element, 0, sizeof(struct capwap_message_element));
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element->type = htons(CAPWAP_ELEMENT_RETURNEDMESSAGE);
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element->length = htons(length);
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dataraw = (struct capwap_returnedmessage_raw_element*)element->data;
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dataraw->reason = dataelement->reason;
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dataraw->length = dataelement->length;
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memcpy(&dataraw->message[0], &dataelement->message[0], dataelement->length);
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return element;
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}
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/* */
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int capwap_returnedmessage_element_validate(struct capwap_message_element* element) {
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/* TODO */
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return 1;
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}
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/* */
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void* capwap_returnedmessage_element_parsing(struct capwap_message_element* element) {
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unsigned short length;
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struct capwap_returnedmessage_element* data;
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struct capwap_returnedmessage_raw_element* dataraw;
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ASSERT(element);
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ASSERT(ntohs(element->type) == CAPWAP_ELEMENT_RETURNEDMESSAGE);
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length = ntohs(element->length) - sizeof(struct capwap_returnedmessage_raw_element);
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if (length > CAPWAP_RETURNED_MESSAGE_MAX_LENGTH) {
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return NULL;
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}
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/* */
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dataraw = (struct capwap_returnedmessage_raw_element*)element->data;
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data = (struct capwap_returnedmessage_element*)capwap_alloc(sizeof(struct capwap_returnedmessage_element));
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if (!data) {
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capwap_outofmemory();
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}
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/* */
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data->reason = dataraw->reason;
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data->length = dataraw->length;
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memcpy(&data->message[0], &dataraw->message[0], dataraw->length);
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return data;
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}
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/* */
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void capwap_returnedmessage_element_free(void* data) {
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ASSERT(data != NULL);
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capwap_free(data);
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}
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