135 lines
4.5 KiB
C
135 lines
4.5 KiB
C
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#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 | WLAN ID | Capability |
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+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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| Key Index | Key Status | Key Length |
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+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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| Key... |
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+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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| Group TSC |
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+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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| Group TSC | QoS | Auth Type |
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+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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| MAC Mode | Tunnel Mode | Suppress SSID | SSID ...
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+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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Type: 1024 for IEEE 802.11 Add WLAN
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Length: >= 20
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********************************************************************/
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/* */
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static void capwap_80211_addwlan_element_create(void* data, capwap_message_elements_handle handle, struct capwap_write_message_elements_ops* func) {
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struct capwap_80211_addwlan_element* element = (struct capwap_80211_addwlan_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->wlanid);
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func->write_u16(handle, element->capability);
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func->write_u8(handle, element->keyindex);
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func->write_u8(handle, element->keystatus);
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func->write_u16(handle, element->keylength);
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if ((element->keylength > 0) && element->key) {
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func->write_block(handle, element->key, element->keylength);
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}
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func->write_block(handle, element->grouptsc, CAPWAP_ADD_WLAN_GROUPTSC_LENGTH);
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func->write_u8(handle, element->qos);
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func->write_u8(handle, element->authmode);
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func->write_u8(handle, element->macmode);
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func->write_u8(handle, element->tunnelmode);
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func->write_u8(handle, element->suppressssid);
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func->write_block(handle, element->ssid, element->ssidlength);
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}
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/* */
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static void capwap_80211_addwlan_element_free(void* data) {
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struct capwap_80211_addwlan_element* element = (struct capwap_80211_addwlan_element*)data;
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ASSERT(data != NULL);
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if (element->ssid) {
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capwap_free(element->ssid);
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}
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if (element->key) {
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capwap_free(element->key);
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}
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capwap_free(element);
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}
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/* */
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static void* capwap_80211_addwlan_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_addwlan_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 < 20) {
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capwap_logging_debug("Invalid IEEE 802.11 Add WLAN element");
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return NULL;
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}
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/* */
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data = (struct capwap_80211_addwlan_element*)capwap_alloc(sizeof(struct capwap_80211_addwlan_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_addwlan_element));
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func->read_u8(handle, &data->radioid);
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func->read_u8(handle, &data->wlanid);
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func->read_u16(handle, &data->capability);
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func->read_u8(handle, &data->keyindex);
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func->read_u8(handle, &data->keystatus);
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func->read_u16(handle, &data->keylength);
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if (data->keylength > 0) {
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data->key = (uint8_t*)capwap_alloc(data->keylength);
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if (!data->key) {
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capwap_outofmemory();
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}
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func->read_block(handle, data->key, data->keylength);
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}
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func->read_block(handle, data->grouptsc, CAPWAP_ADD_WLAN_GROUPTSC_LENGTH);
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func->read_u8(handle, &data->qos);
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func->read_u8(handle, &data->authmode);
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func->read_u8(handle, &data->macmode);
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func->read_u8(handle, &data->tunnelmode);
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func->read_u8(handle, &data->suppressssid);
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data->ssidlength = length - (19 + data->keylength);
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if (data->ssidlength > CAPWAP_ADD_WLAN_SSID_LENGTH) {
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capwap_80211_addwlan_element_free((void*)data);
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capwap_logging_debug("Invalid IEEE 802.11 Add WLAN element");
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return NULL;
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}
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data->ssid = (uint8_t*)capwap_alloc(data->ssidlength + 1);
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func->read_block(handle, data->ssid, data->ssidlength);
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data->ssid[data->ssidlength] = 0;
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return data;
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}
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/* */
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struct capwap_message_elements_ops capwap_element_80211_addwlan_ops = {
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.create_message_element = capwap_80211_addwlan_element_create,
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.parsing_message_element = capwap_80211_addwlan_element_parsing,
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.free_parsed_message_element = capwap_80211_addwlan_element_free
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};
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