Add also 80211 message element

src/common/capwap_element_80211_ie.c

@@ -0,0 +1,83 @@
+#include "capwap.h"
+#include "capwap_element.h"
+
+/********************************************************************
+
+ 0                   1                   2                   3
+ 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
++-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+|   Radio ID    |    WLAN ID    |B|P| Reserved  |Info Element...
++-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+
+Type:   1029 for IEEE 802.11 Information Element
+
+Length:   >= 4
+
+********************************************************************/
+
+/* */
+static void capwap_80211_ie_element_create(void* data, capwap_message_elements_handle handle, struct capwap_write_message_elements_ops* func) {
+	struct capwap_80211_ie_element* element = (struct capwap_80211_ie_element*)data;
+
+	ASSERT(data != NULL);
+
+	func->write_u8(handle, element->radioid);
+	func->write_u8(handle, element->wlanid);
+	func->write_u8(handle, element->flags);
+	func->write_block(handle, element->ie, element->ielength);
+}
+
+/* */
+static void* capwap_80211_ie_element_parsing(capwap_message_elements_handle handle, struct capwap_read_message_elements_ops* func) {
+	unsigned short length;
+	struct capwap_80211_ie_element* data;
+
+	ASSERT(handle != NULL);
+	ASSERT(func != NULL);
+
+	length = func->read_ready(handle);
+	if (length < 4) {
+		capwap_logging_debug("Invalid IEEE 802.11 Information Element element");
+		return NULL;
+	}
+
+	/* */
+	length -= 3;
+
+	/* */
+	data = (struct capwap_80211_ie_element*)capwap_alloc(sizeof(struct capwap_80211_ie_element));
+	if (!data) {
+		capwap_outofmemory();
+	}
+
+	/* Retrieve data */
+	memset(data, 0, sizeof(struct capwap_80211_ie_element));
+	func->read_u8(handle, &data->radioid);
+	func->read_u8(handle, &data->wlanid);
+	func->read_u8(handle, &data->flags);
+	data->ielength = length;
+	data->ie = (uint8_t*)capwap_alloc(data->ielength);
+	if (!data->ie) {
+		capwap_outofmemory();
+	}
+	func->read_block(handle, data->ie, data->ielength);
+
+	return data;
+}
+
+/* */
+static void capwap_80211_ie_element_free(void* data) {
+	struct capwap_80211_ie_element* element = (struct capwap_80211_ie_element*)data;
+
+	ASSERT(data != NULL);
+
+	capwap_free(element->ie);
+	capwap_free(element);
+}
+
+/* */
+struct capwap_message_elements_ops capwap_element_80211_ie_ops = {
+	.create_message_element = capwap_80211_ie_element_create,
+	.parsing_message_element = capwap_80211_ie_element_parsing,
+	.free_parsed_message_element = capwap_80211_ie_element_free
+};