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/*
* Copyright (c) 2005 Massachusetts Institute of Technology
*
* Permission is hereby granted, free of charge, to any person
* obtaining a copy of this software and associated documentation
* files (the "Software"), to deal in the Software without
* restriction, including without limitation the rights to use, copy,
* modify, merge, publish, distribute, sublicense, and/or sell copies
* of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
/* $Id$ */
#include<khmapp.h>
#include<iphlpapi.h>
static HANDLE evt_terminate = NULL;
static HANDLE h_thread = NULL;
DWORD WINAPI
addr_change_thread(LPVOID dummy) {
HANDLE h_waits[2];
HANDLE h_notify;
OVERLAPPED overlap;
DWORD ret;
PDESCTHREAD(L"Address change waiter", L"App");
ZeroMemory(&overlap, sizeof(overlap));
h_notify = NULL;
overlap.hEvent = CreateEvent(NULL, TRUE, FALSE, NULL);
do {
ret = NotifyAddrChange(&h_notify, &overlap);
if (ret != ERROR_IO_PENDING) {
goto _end_thread; /* some error */
}
h_waits[0] = overlap.hEvent;
h_waits[1] = evt_terminate;
ret = WaitForMultipleObjects(2, h_waits, FALSE, INFINITE);
if ( ret == WAIT_OBJECT_0 ) {
Sleep(3000); /* wait for things to settle down */
kmq_post_message(KMSG_CRED, KMSG_CRED_ADDR_CHANGE, 0, 0);
} else {
goto _end_thread;
}
} while(TRUE);
_end_thread:
ExitThread(0);
}
void
khm_addr_change_notifier_init(void) {
evt_terminate = CreateEvent(NULL, FALSE, FALSE, NULL);
h_thread = CreateThread(NULL,
64 * 4096,
addr_change_thread,
NULL,
0,
NULL);
}
void
khm_addr_change_notifier_exit(void) {
if (h_thread && evt_terminate) {
SetEvent(evt_terminate);
WaitForSingleObject(h_thread, INFINITE);
CloseHandle(h_thread);
CloseHandle(evt_terminate);
}
}
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