Eric Anholt | d6a45eb | 2007-08-13 11:27:46 -0700 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright © 2007 Intel Corporation |
| 3 | * |
| 4 | * Permission is hereby granted, free of charge, to any person obtaining a |
| 5 | * copy of this software and associated documentation files (the "Software"), |
| 6 | * to deal in the Software without restriction, including without limitation |
| 7 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
| 8 | * and/or sell copies of the Software, and to permit persons to whom the |
| 9 | * Software is furnished to do so, subject to the following conditions: |
| 10 | * |
| 11 | * The above copyright notice and this permission notice (including the next |
| 12 | * paragraph) shall be included in all copies or substantial portions of the |
| 13 | * Software. |
| 14 | * |
| 15 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| 16 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 17 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| 18 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| 19 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING |
| 20 | * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS |
| 21 | * IN THE SOFTWARE. |
| 22 | * |
| 23 | * Authors: |
| 24 | * Eric Anholt <eric@anholt.net> |
| 25 | * |
| 26 | */ |
| 27 | |
| 28 | #include <limits.h> |
| 29 | #include "drmtest.h" |
| 30 | |
| 31 | enum auth_event { |
| 32 | SERVER_READY, |
| 33 | CLIENT_MAGIC, |
| 34 | CLIENT_DONE, |
| 35 | }; |
| 36 | |
| 37 | int commfd[2]; |
| 38 | |
| 39 | static void wait_event(int pipe, enum auth_event expected_event) |
| 40 | { |
| 41 | int ret; |
| 42 | enum auth_event event; |
| 43 | unsigned char in; |
| 44 | |
| 45 | ret = read(commfd[pipe], &in, 1); |
| 46 | if (ret == -1) |
| 47 | err(1, "read error"); |
| 48 | event = in; |
| 49 | |
| 50 | if (event != expected_event) |
| 51 | errx(1, "unexpected event: %d\n", event); |
| 52 | } |
| 53 | |
| 54 | static void |
| 55 | send_event(int pipe, enum auth_event send_event) |
| 56 | { |
| 57 | int ret; |
| 58 | unsigned char event; |
| 59 | |
| 60 | event = send_event; |
| 61 | ret = write(commfd[pipe], &event, 1); |
| 62 | if (ret == -1) |
| 63 | err(1, "failed to send event %d", event); |
| 64 | } |
| 65 | |
| 66 | static void client() |
| 67 | { |
| 68 | struct drm_auth auth; |
| 69 | int drmfd, ret; |
| 70 | |
| 71 | /* XXX: Should make sure we open the same DRM as the master */ |
| 72 | drmfd = drm_open_any(); |
| 73 | |
| 74 | wait_event(0, SERVER_READY); |
| 75 | |
| 76 | /* Get a client magic number and pass it to the master for auth. */ |
| 77 | auth.magic = 0; /* Quiet valgrind */ |
| 78 | ret = ioctl(drmfd, DRM_IOCTL_GET_MAGIC, &auth); |
| 79 | if (ret == -1) |
| 80 | err(1, "Couldn't get client magic"); |
| 81 | send_event(0, CLIENT_MAGIC); |
| 82 | ret = write(commfd[0], &auth.magic, sizeof(auth.magic)); |
| 83 | if (ret == -1) |
| 84 | err(1, "Couldn't write auth data"); |
| 85 | |
| 86 | /* Signal that the client is completely done. */ |
| 87 | send_event(0, CLIENT_DONE); |
| 88 | } |
| 89 | |
| 90 | static void server() |
| 91 | { |
| 92 | int drmfd, ret; |
| 93 | struct drm_auth auth; |
| 94 | |
| 95 | drmfd = drm_open_any_master(); |
| 96 | |
| 97 | auth.magic = 0xd0d0d0d0; |
| 98 | ret = ioctl(drmfd, DRM_IOCTL_AUTH_MAGIC, &auth); |
| 99 | if (ret != -1 || errno != EINVAL) |
| 100 | errx(1, "Authenticating bad magic succeeded\n"); |
| 101 | |
| 102 | send_event(1, SERVER_READY); |
| 103 | |
| 104 | wait_event(1, CLIENT_MAGIC); |
| 105 | ret = read(commfd[1], &auth.magic, sizeof(auth.magic)); |
| 106 | if (ret == -1) |
| 107 | err(1, "Failure to read client magic"); |
| 108 | |
| 109 | ret = ioctl(drmfd, DRM_IOCTL_AUTH_MAGIC, &auth); |
| 110 | if (ret == -1) |
| 111 | err(1, "Authenticating bad magic succeeded\n"); |
| 112 | |
| 113 | wait_event(1, CLIENT_DONE); |
| 114 | } |
| 115 | |
| 116 | /** |
| 117 | * Checks DRM authentication mechanisms. |
| 118 | */ |
| 119 | int main(int argc, char **argv) |
| 120 | { |
| 121 | int ret; |
| 122 | |
| 123 | ret = pipe(commfd); |
| 124 | if (ret == -1) |
| 125 | err(1, "Couldn't create pipe"); |
| 126 | |
| 127 | ret = fork(); |
| 128 | if (ret == -1) |
| 129 | err(1, "failure to fork client"); |
| 130 | if (ret == 0) |
| 131 | client(); |
| 132 | else |
| 133 | server(); |
| 134 | |
| 135 | return 0; |
| 136 | } |
| 137 | |