/*
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* WPA Supplicant - Windows/NDIS driver interface - event processing
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* Copyright (c) 2004-2005, Jouni Malinen <j@w1.fi>
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*
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* This software may be distributed under the terms of the BSD license.
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* See README for more details.
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*/
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#include "includes.h"
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#include "common.h"
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#include "driver.h"
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#include "eloop.h"
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/* Keep this event processing in a separate file and without WinPcap headers to
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* avoid conflicts with some of the header files. */
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struct _ADAPTER;
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typedef struct _ADAPTER * LPADAPTER;
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#include "driver_ndis.h"
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void wpa_driver_ndis_event_connect(struct wpa_driver_ndis_data *drv);
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void wpa_driver_ndis_event_disconnect(struct wpa_driver_ndis_data *drv);
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void wpa_driver_ndis_event_media_specific(struct wpa_driver_ndis_data *drv,
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const u8 *data, size_t data_len);
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void wpa_driver_ndis_event_adapter_arrival(struct wpa_driver_ndis_data *drv);
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void wpa_driver_ndis_event_adapter_removal(struct wpa_driver_ndis_data *drv);
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enum event_types { EVENT_CONNECT, EVENT_DISCONNECT,
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EVENT_MEDIA_SPECIFIC, EVENT_ADAPTER_ARRIVAL,
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EVENT_ADAPTER_REMOVAL };
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/* Event data:
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* enum event_types (as int, i.e., 4 octets)
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* data length (2 octets (big endian), optional)
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* data (variable len, optional)
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*/
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static void wpa_driver_ndis_event_process(struct wpa_driver_ndis_data *drv,
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u8 *buf, size_t len)
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{
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u8 *pos, *data = NULL;
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enum event_types type;
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size_t data_len = 0;
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wpa_hexdump(MSG_MSGDUMP, "NDIS: received event data", buf, len);
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if (len < sizeof(int))
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return;
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type = *((int *) buf);
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pos = buf + sizeof(int);
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wpa_printf(MSG_DEBUG, "NDIS: event - type %d", type);
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if (buf + len - pos > 2) {
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data_len = (int) *pos++ << 8;
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data_len += *pos++;
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if (data_len > (size_t) (buf + len - pos)) {
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wpa_printf(MSG_DEBUG, "NDIS: event data overflow");
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return;
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}
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data = pos;
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wpa_hexdump(MSG_MSGDUMP, "NDIS: event data", data, data_len);
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}
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switch (type) {
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case EVENT_CONNECT:
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wpa_driver_ndis_event_connect(drv);
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break;
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case EVENT_DISCONNECT:
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wpa_driver_ndis_event_disconnect(drv);
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break;
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case EVENT_MEDIA_SPECIFIC:
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wpa_driver_ndis_event_media_specific(drv, data, data_len);
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break;
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case EVENT_ADAPTER_ARRIVAL:
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wpa_driver_ndis_event_adapter_arrival(drv);
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break;
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case EVENT_ADAPTER_REMOVAL:
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wpa_driver_ndis_event_adapter_removal(drv);
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break;
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}
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}
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void wpa_driver_ndis_event_pipe_cb(void *eloop_data, void *user_data)
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{
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struct wpa_driver_ndis_data *drv = eloop_data;
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u8 buf[512];
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DWORD len;
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ResetEvent(drv->event_avail);
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if (ReadFile(drv->events_pipe, buf, sizeof(buf), &len, NULL))
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wpa_driver_ndis_event_process(drv, buf, len);
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else {
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wpa_printf(MSG_DEBUG, "%s: ReadFile() failed: %d", __func__,
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(int) GetLastError());
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}
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}
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