139 lines
3.3 KiB
C
139 lines
3.3 KiB
C
/*
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* Copyright © 2007 Intel Corporation
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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* IN THE SOFTWARE.
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*
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* Authors:
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* Eric Anholt <eric@anholt.net>
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*
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*/
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#include <limits.h>
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#include <sys/ioctl.h>
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#include "drmtest.h"
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enum auth_event {
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SERVER_READY,
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CLIENT_MAGIC,
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CLIENT_DONE,
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};
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int commfd[2];
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static void wait_event(int pipe, enum auth_event expected_event)
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{
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int ret;
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enum auth_event event;
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unsigned char in;
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ret = read(commfd[pipe], &in, 1);
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if (ret == -1)
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err(1, "read error");
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event = in;
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if (event != expected_event)
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errx(1, "unexpected event: %d\n", event);
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}
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static void
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send_event(int pipe, enum auth_event send_event)
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{
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int ret;
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unsigned char event;
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event = send_event;
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ret = write(commfd[pipe], &event, 1);
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if (ret == -1)
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err(1, "failed to send event %d", event);
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}
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static void client()
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{
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struct drm_auth auth;
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int drmfd, ret;
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/* XXX: Should make sure we open the same DRM as the master */
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wait_event(0, SERVER_READY);
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drmfd = drm_open_any();
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/* Get a client magic number and pass it to the master for auth. */
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auth.magic = 0; /* Quiet valgrind */
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ret = ioctl(drmfd, DRM_IOCTL_GET_MAGIC, &auth);
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if (ret == -1)
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err(1, "Couldn't get client magic");
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send_event(0, CLIENT_MAGIC);
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ret = write(commfd[0], &auth.magic, sizeof(auth.magic));
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if (ret == -1)
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err(1, "Couldn't write auth data");
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/* Signal that the client is completely done. */
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send_event(0, CLIENT_DONE);
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}
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static void server()
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{
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int drmfd, ret;
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struct drm_auth auth;
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drmfd = drm_open_any_master();
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auth.magic = 0xd0d0d0d0;
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ret = ioctl(drmfd, DRM_IOCTL_AUTH_MAGIC, &auth);
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if (ret != -1 || errno != EINVAL)
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errx(1, "Authenticating bad magic succeeded\n");
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send_event(1, SERVER_READY);
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wait_event(1, CLIENT_MAGIC);
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ret = read(commfd[1], &auth.magic, sizeof(auth.magic));
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if (ret == -1)
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err(1, "Failure to read client magic");
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ret = ioctl(drmfd, DRM_IOCTL_AUTH_MAGIC, &auth);
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if (ret == -1)
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err(1, "Failure to authenticate client magic\n");
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wait_event(1, CLIENT_DONE);
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}
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/**
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* Checks DRM authentication mechanisms.
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*/
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int main(int argc, char **argv)
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{
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int ret;
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ret = pipe(commfd);
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if (ret == -1)
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err(1, "Couldn't create pipe");
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ret = fork();
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if (ret == -1)
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err(1, "failure to fork client");
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if (ret == 0)
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client();
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else
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server();
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return 0;
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}
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