1 /*
2 * Copyright © 2014 Ran Benita <ran234@gmail.com>
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
21 * DEALINGS IN THE SOFTWARE.
22 */
23
24 #include "config.h"
25
26 #include <stdio.h>
27 #include <spawn.h>
28 #include <unistd.h>
29 #include <assert.h>
30 #include <signal.h>
31 #include <sys/types.h>
32 #include <sys/wait.h>
33
34 #include "test.h"
35 #include "xkbcommon/xkbcommon-x11.h"
36
37 int
main(void)38 main(void)
39 {
40 struct xkb_context *ctx = test_get_context(0);
41 struct xkb_keymap *keymap;
42 xcb_connection_t *conn;
43 int32_t device_id;
44 int ret, status;
45 char display[512];
46 char *xkb_path;
47 char *original, *dump;
48 char *envp[] = { NULL };
49 char *xvfb_argv[] = {
50 (char *) "Xvfb", display, NULL
51 };
52 pid_t xvfb_pid = 0;
53 char *xkbcomp_argv[] = {
54 (char *) "xkbcomp", (char *) "-I", NULL /* xkb_path */, display, NULL
55 };
56 pid_t xkbcomp_pid;
57
58 char *xhost = NULL;
59 int xdpy_current;
60 int xdpy_candidate;
61
62 /*
63 * What all of this mess does is:
64 * 1. Launch Xvfb on available DISPLAY.
65 * 2. Make an xcb connection to this display.
66 * 3. Launch xkbcomp to change the keymap of the new display (doing
67 * this programmatically is major work [which we may yet do some
68 * day for xkbcommon-x11] so we use xkbcomp for now).
69 * 4. Download the keymap back from the display using xkbcommon-x11.
70 * 5. Compare received keymap to the uploaded keymap.
71 * 6. Kill the server & clean up.
72 */
73
74 ret = xcb_parse_display(NULL, &xhost, &xdpy_current, NULL);
75 assert(ret != 0);
76 /*
77 * IANA assigns TCP port numbers from 6000 through 6063 to X11
78 * clients. In addition, the current XCB implementaion shows
79 * that, when an X11 client tries to establish a TCP connetion,
80 * the port number needed is specified by adding 6000 to a given
81 * display number. So, one of reasonable ranges of xdpy_candidate
82 * is [0, 63].
83 */
84 for (xdpy_candidate = 63; xdpy_candidate >= 0; xdpy_candidate--) {
85 if (xdpy_candidate == xdpy_current) {
86 continue;
87 }
88 snprintf(display, sizeof(display), "%s:%d", xhost, xdpy_candidate);
89 ret = posix_spawnp(&xvfb_pid, "Xvfb", NULL, NULL, xvfb_argv, envp);
90 if (ret == 0) {
91 break;
92 }
93 }
94 free(xhost);
95 if (ret != 0) {
96 ret = SKIP_TEST;
97 goto err_ctx;
98 }
99
100 /* Wait for Xvfb fully waking up to accept a connection from a client. */
101 sleep(1);
102
103 conn = xcb_connect(display, NULL);
104 if (xcb_connection_has_error(conn)) {
105 ret = SKIP_TEST;
106 goto err_xvfd;
107 }
108 ret = xkb_x11_setup_xkb_extension(conn,
109 XKB_X11_MIN_MAJOR_XKB_VERSION,
110 XKB_X11_MIN_MINOR_XKB_VERSION,
111 XKB_X11_SETUP_XKB_EXTENSION_NO_FLAGS,
112 NULL, NULL, NULL, NULL);
113 if (!ret) {
114 ret = SKIP_TEST;
115 goto err_xcb;
116 }
117 device_id = xkb_x11_get_core_keyboard_device_id(conn);
118 assert(device_id != -1);
119
120 xkb_path = test_get_path("keymaps/host.xkb");
121 assert(ret >= 0);
122 xkbcomp_argv[2] = xkb_path;
123 ret = posix_spawnp(&xkbcomp_pid, "xkbcomp", NULL, NULL, xkbcomp_argv, envp);
124 free(xkb_path);
125 if (ret != 0) {
126 ret = SKIP_TEST;
127 goto err_xcb;
128 }
129 ret = waitpid(xkbcomp_pid, &status, 0);
130 if (ret < 0 || !WIFEXITED(status) || WEXITSTATUS(status) != 0) {
131 ret = SKIP_TEST;
132 goto err_xcb;
133 }
134
135 keymap = xkb_x11_keymap_new_from_device(ctx, conn, device_id,
136 XKB_KEYMAP_COMPILE_NO_FLAGS);
137 assert(keymap);
138
139 original = test_read_file("keymaps/host.xkb");
140 assert(original);
141
142 dump = xkb_keymap_get_as_string(keymap, XKB_KEYMAP_USE_ORIGINAL_FORMAT);
143 assert(dump);
144
145 if (!streq(original, dump)) {
146 fprintf(stderr,
147 "round-trip test failed: dumped map differs from original\n");
148 fprintf(stderr, "length: dumped %lu, original %lu\n",
149 (unsigned long) strlen(dump),
150 (unsigned long) strlen(original));
151 fprintf(stderr, "dumped map:\n");
152 fprintf(stderr, "%s\n", dump);
153 ret = 1;
154 goto err_dump;
155 }
156
157 ret = 0;
158 err_dump:
159 free(original);
160 free(dump);
161 xkb_keymap_unref(keymap);
162 err_xcb:
163 xcb_disconnect(conn);
164 err_xvfd:
165 if (xvfb_pid > 0)
166 kill(xvfb_pid, SIGTERM);
167 err_ctx:
168 xkb_context_unref(ctx);
169 return ret;
170 }
171