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/*
* Copyright © 2007 Intel Corporation
*
* 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 (including the next
* paragraph) 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.
*
* Authors:
* Eric Anholt <eric@anholt.net>
*
*/
#include <limits.h>
#include "drmtest.h"
enum auth_event {
SERVER_READY,
CLIENT_MAGIC,
CLIENT_DONE,
};
int commfd[2];
static void wait_event(int pipe, enum auth_event expected_event)
{
int ret;
enum auth_event event;
unsigned char in;
ret = read(commfd[pipe], &in, 1);
if (ret == -1)
err(1, "read error");
event = in;
if (event != expected_event)
errx(1, "unexpected event: %d\n", event);
}
static void
send_event(int pipe, enum auth_event send_event)
{
int ret;
unsigned char event;
event = send_event;
ret = write(commfd[pipe], &event, 1);
if (ret == -1)
err(1, "failed to send event %d", event);
}
static void client()
{
struct drm_auth auth;
int drmfd, ret;
/* XXX: Should make sure we open the same DRM as the master */
wait_event(0, SERVER_READY);
drmfd = drm_open_any();
/* Get a client magic number and pass it to the master for auth. */
auth.magic = 0; /* Quiet valgrind */
ret = ioctl(drmfd, DRM_IOCTL_GET_MAGIC, &auth);
if (ret == -1)
err(1, "Couldn't get client magic");
send_event(0, CLIENT_MAGIC);
ret = write(commfd[0], &auth.magic, sizeof(auth.magic));
if (ret == -1)
err(1, "Couldn't write auth data");
/* Signal that the client is completely done. */
send_event(0, CLIENT_DONE);
}
static void server()
{
int drmfd, ret;
struct drm_auth auth;
drmfd = drm_open_any_master();
auth.magic = 0xd0d0d0d0;
ret = ioctl(drmfd, DRM_IOCTL_AUTH_MAGIC, &auth);
if (ret != -1 || errno != EINVAL)
errx(1, "Authenticating bad magic succeeded\n");
send_event(1, SERVER_READY);
wait_event(1, CLIENT_MAGIC);
ret = read(commfd[1], &auth.magic, sizeof(auth.magic));
if (ret == -1)
err(1, "Failure to read client magic");
ret = ioctl(drmfd, DRM_IOCTL_AUTH_MAGIC, &auth);
if (ret == -1)
err(1, "Failure to authenticate client magic\n");
wait_event(1, CLIENT_DONE);
}
/**
* Checks DRM authentication mechanisms.
*/
int main(int argc, char **argv)
{
int ret;
ret = pipe(commfd);
if (ret == -1)
err(1, "Couldn't create pipe");
ret = fork();
if (ret == -1)
err(1, "failure to fork client");
if (ret == 0)
client();
else
server();
return 0;
}
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