91 lines
2.7 KiB
C
91 lines
2.7 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 | Diversity | Combiner | Antenna Cnt |
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+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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| Antenna Selection...
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+-+-+-+-+-+-+-+-+
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Type: 1025 for IEEE 802.11 Antenna
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Length: >= 5
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********************************************************************/
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/* */
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static void capwap_80211_antenna_element_create(void* data, capwap_message_elements_handle handle, struct capwap_write_message_elements_ops* func) {
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struct capwap_80211_antenna_element* element = (struct capwap_80211_antenna_element*)data;
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ASSERT(data != NULL);
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func->write_u8(handle, element->radioid);
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func->write_u8(handle, element->diversity);
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func->write_u8(handle, element->combiner);
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func->write_u8(handle, element->antennacount);
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func->write_block(handle, element->antennaselections, element->antennacount);
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}
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/* */
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static void* capwap_80211_antenna_element_parsing(capwap_message_elements_handle handle, struct capwap_read_message_elements_ops* func) {
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unsigned short length;
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struct capwap_80211_antenna_element* data;
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ASSERT(handle != NULL);
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ASSERT(func != NULL);
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length = func->read_ready(handle);
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if (length < 5) {
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capwap_logging_debug("Invalid IEEE 802.11 Antenna element");
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return NULL;
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}
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length -= 4;
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if (length > CAPWAP_ANTENNASELECTIONS_MAXLENGTH) {
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capwap_logging_debug("Invalid IEEE 802.11 Antenna element");
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return NULL;
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}
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/* */
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data = (struct capwap_80211_antenna_element*)capwap_alloc(sizeof(struct capwap_80211_antenna_element));
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if (!data) {
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capwap_outofmemory();
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}
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/* Retrieve data */
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memset(data, 0, sizeof(struct capwap_80211_antenna_element));
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func->read_u8(handle, &data->radioid);
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func->read_u8(handle, &data->diversity);
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func->read_u8(handle, &data->combiner);
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func->read_u8(handle, &data->antennacount);
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/* Check */
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if (data->antennacount != length) {
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capwap_logging_debug("Invalid IEEE 802.11 Antenna element");
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capwap_free(data);
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return NULL;
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}
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func->read_block(handle, data->antennaselections, length);
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return data;
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}
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/* */
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static void capwap_80211_antenna_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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/* */
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struct capwap_message_elements_ops capwap_element_80211_antenna_ops = {
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.create_message_element = capwap_80211_antenna_element_create,
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.parsing_message_element = capwap_80211_antenna_element_parsing,
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.free_parsed_message_element = capwap_80211_antenna_element_free
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};
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