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/*
* This file is part of the Nice GLib ICE library.
*
* (C) 2007 Nokia Corporation. All rights reserved.
* Contact: Kai Vehmanen
* (C) 2025 Johan Sternerup <johast@axis.com>
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is the Nice GLib ICE library.
*
* The Initial Developers of the Original Code are Collabora Ltd and Nokia
* Corporation. All Rights Reserved.
*
* Contributors:
* Kai Vehmanen, Nokia
* Johan Sternerup, Axis Communications AB
*
* Alternatively, the contents of this file may be used under the terms of the
* the GNU Lesser General Public License Version 2.1 (the "LGPL"), in which
* case the provisions of LGPL are applicable instead of those above. If you
* wish to allow use of your version of this file only under the terms of the
* LGPL and not to allow others to use your version of this file under the
* MPL, indicate your decision by deleting the provisions above and replace
* them with the notice and other provisions required by the LGPL. If you do
* not delete the provisions above, a recipient may use your version of this
* file under either the MPL or the LGPL.
*/
#include <sys/types.h>
#include <sys/socket.h>
#include <netdb.h>
#include <unistd.h>
#include <dlfcn.h>
#include <sched.h>
#include <time.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
int
fake_getaddrinfo (const char *__restrict __name,
const char *__restrict __service,
const struct addrinfo *__restrict __req,
struct addrinfo **__restrict __pai);
int
fake_getaddrinfo (const char *__restrict __name,
const char *__restrict __service,
const struct addrinfo *__restrict __req, struct addrinfo **__restrict __pai)
{
static int in_progress[2] = { 0 };
static int cancel = 0;
static int one = 1;
static int zero = 0;
int stun = 0;
int turn = 0;
if (strstr (__name, "query") != NULL) {
/* test code asks for how many resolve operations are in progress */
int sum = 0;
int tmp;
__atomic_load (&in_progress[0], &tmp, __ATOMIC_SEQ_CST);
sum += tmp;
__atomic_load (&in_progress[1], &tmp, __ATOMIC_SEQ_CST);
sum += tmp;
return sum;
} else if (strstr (__name, "cancel") != NULL) {
/* test code tells us to cancel (stop blocking) resolve operations */
__atomic_store (&cancel, &one, __ATOMIC_SEQ_CST);
return 0;
} else if (strstr (__name, "block") != NULL) {
/* test code tells us to block all resolve operations containing "bogus.nonexisting" */
__atomic_store (&cancel, &zero, __ATOMIC_SEQ_CST);
return 0;
} else if (strstr (__name, "stun") != NULL) {
/* signal stun resolving in progress */
__atomic_store (&in_progress[0], &one, __ATOMIC_SEQ_CST);
stun = 1;
} else if (strstr (__name, "turn") != NULL) {
/* signal turn resolving in progress */
__atomic_store (&in_progress[1], &one, __ATOMIC_SEQ_CST);
turn = 1;
} else {
return EAI_ADDRFAMILY;
}
/* loop until we get cancel */
while (1) {
struct timespec ts;
int tmp;
__atomic_load (&cancel, &tmp, __ATOMIC_SEQ_CST);
if (tmp == 1) {
break;
}
ts.tv_sec = 0;
ts.tv_nsec = 1000;
nanosleep (&ts, NULL);
}
if (stun == 1) {
/* signal stun resolved */
__atomic_store (&in_progress[0], &zero, __ATOMIC_SEQ_CST);
} else if (turn == 1) {
/* signal turn resolved */
__atomic_store (&in_progress[1], &zero, __ATOMIC_SEQ_CST);
}
return EAI_ADDRFAMILY;
}
int
getaddrinfo (const char *__restrict __name,
const char *__restrict __service,
const struct addrinfo *__restrict __req, struct addrinfo **__restrict __pai)
{
static int
(*real_getaddrinfo) (const char *__restrict __name,
const char *__restrict __service,
const struct addrinfo * __restrict __req,
struct addrinfo ** __restrict __pai) = NULL;
if (__name != NULL && strstr (__name, "bogus.nonexisting") != NULL &&
(__req == NULL || ((__req->ai_flags & AI_NUMERICHOST) == 0))) {
return fake_getaddrinfo (__name, __service, __req, __pai);
}
if (real_getaddrinfo == NULL) {
real_getaddrinfo = dlsym (RTLD_NEXT, "getaddrinfo");
}
return real_getaddrinfo (__name, __service, __req, __pai);
}
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