105 lines
3.3 KiB
C
105 lines
3.3 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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| Radio ID | Supported Rates...
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+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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Type: 1040 for IEEE 802.11 Supported Rates
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Length: >= 3
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********************************************************************/
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struct capwap_80211_supportedrates_raw_element {
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unsigned char radioid;
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unsigned char supportedrates[0];
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} __attribute__((__packed__));
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/* */
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struct capwap_message_element* capwap_80211_supportedrates_element_create(void* data, unsigned long datalength) {
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int i;
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unsigned short supportedrateslength;
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struct capwap_message_element* element;
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struct capwap_80211_supportedrates_raw_element* dataraw;
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struct capwap_80211_supportedrates_element* dataelement = (struct capwap_80211_supportedrates_element*)data;
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ASSERT(data != NULL);
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ASSERT(datalength >= sizeof(struct capwap_80211_supportedrates_element));
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/* Alloc block of memory */
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supportedrateslength = dataelement->supportedratescount * sizeof(unsigned char);
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element = capwap_alloc(sizeof(struct capwap_message_element) + sizeof(struct capwap_80211_supportedrates_raw_element) + supportedrateslength);
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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) + sizeof(struct capwap_80211_supportedrates_raw_element) + supportedrateslength);
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element->type = htons(CAPWAP_ELEMENT_80211_SUPPORTEDRATES);
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element->length = htons(sizeof(struct capwap_80211_supportedrates_raw_element) + supportedrateslength);
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dataraw = (struct capwap_80211_supportedrates_raw_element*)element->data;
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dataraw->radioid = dataelement->radioid;
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for (i = 0; i < dataelement->supportedratescount; i++) {
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dataraw->supportedrates[i] = dataelement->supportedrates[i];
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}
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return element;
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}
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/* */
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int capwap_80211_supportedrates_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_80211_supportedrates_element_parsing(struct capwap_message_element* element) {
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int i;
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unsigned short supportedrateslength;
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struct capwap_80211_supportedrates_element* data;
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struct capwap_80211_supportedrates_raw_element* dataraw;
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ASSERT(element);
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ASSERT(ntohs(element->type) == CAPWAP_ELEMENT_80211_SUPPORTEDRATES);
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supportedrateslength = ntohs(element->length);
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if (supportedrateslength < 3) {
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return NULL;
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}
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supportedrateslength -= sizeof(struct capwap_80211_supportedrates_raw_element);
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if (supportedrateslength > CAPWAP_SUPPORTEDRATES_MAXLENGTH) {
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return NULL;
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}
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dataraw = (struct capwap_80211_supportedrates_raw_element*)element->data;
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/* */
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data = (struct capwap_80211_supportedrates_element*)capwap_alloc(sizeof(struct capwap_80211_supportedrates_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->radioid = dataraw->radioid;
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data->supportedratescount = supportedrateslength;
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for (i = 0; i < supportedrateslength; i++) {
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data->supportedrates[i] = dataraw->supportedrates[i];
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}
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return data;
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}
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/* */
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void capwap_80211_supportedrates_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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