kc3-lang/libxkbcommon/test/x11comp.c

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• Hash : 37ee8e65
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  Date : 2016-03-13T22:56:48
  

  test/x11comp: fix memory leak Signed-off-by: Ran Benita <ran234@gmail.com>

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• test/x11comp.c

• /*
   * Copyright © 2014 Ran Benita <ran234@gmail.com>
   *
   * 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.
   */
  
  #include <stdio.h>
  #include <spawn.h>
  #include <unistd.h>
  #include <assert.h>
  #include <signal.h>
  #include <sys/types.h>
  #include <sys/wait.h>
  
  #include "test.h"
  #include "xkbcommon/xkbcommon-x11.h"
  
  int
  main(void)
  {
      struct xkb_context *ctx = test_get_context(0);
      struct xkb_keymap *keymap;
      xcb_connection_t *conn;
      int32_t device_id;
      int ret, status;
      char display[512];
      char *xkb_path;
      char *original, *dump;
      char *envp[] = { NULL };
      char *xvfb_argv[] = { "Xvfb", display, NULL };
      pid_t xvfb_pid;
      char *xkbcomp_argv[] = { "xkbcomp", "-I", NULL /* xkb_path */, display,
                               NULL };
      pid_t xkbcomp_pid;
  
      char *xhost = NULL;
      int xdpy_current;
      int xdpy_candidate;
  
      /*
       * What all of this mess does is:
       * 1. Launch Xvfb on available DISPLAY.
       * 2. Make an xcb connection to this display.
       * 3. Launch xkbcomp to change the keymap of the new display (doing
       *    this programmatically is major work [which we may yet do some
       *    day for xkbcommon-x11] so we use xkbcomp for now).
       * 4. Download the keymap back from the display using xkbcommon-x11.
       * 5. Compare received keymap to the uploaded keymap.
       * 6. Kill the server & clean up.
       */
  
      ret = xcb_parse_display(NULL, &xhost, &xdpy_current, NULL);
      assert(ret != 0);
      /*
       * IANA assigns TCP port numbers from 6000 through 6063 to X11
       * clients.  In addition, the current XCB implementaion shows
       * that, when an X11 client tries to establish a TCP connetion,
       * the port number needed is specified by adding 6000 to a given
       * display number.  So, one of reasonable ranges of xdpy_candidate
       * is [0, 63].
       */
      for (xdpy_candidate = 63; xdpy_candidate >= 0; xdpy_candidate--) {
          char *buf;
  
          if (xdpy_candidate == xdpy_current) {
              continue;
          }
          snprintf(display, sizeof(display), "%s:%d", xhost, xdpy_candidate);
          ret = posix_spawnp(&xvfb_pid, "Xvfb", NULL, NULL, xvfb_argv, envp);
          if (ret == 0) {
              break;
          }
      }
      free(xhost);
      if (ret != 0) {
          ret = SKIP_TEST;
          goto err_ctx;
      }
  
      /* Wait for Xvfb fully waking up to accept a connection from a client. */
      sleep(1);
  
      conn = xcb_connect(display, NULL);
      if (xcb_connection_has_error(conn)) {
          ret = SKIP_TEST;
          goto err_xvfd;
      }
      ret = xkb_x11_setup_xkb_extension(conn,
                                        XKB_X11_MIN_MAJOR_XKB_VERSION,
                                        XKB_X11_MIN_MINOR_XKB_VERSION,
                                        XKB_X11_SETUP_XKB_EXTENSION_NO_FLAGS,
                                        NULL, NULL, NULL, NULL);
      if (!ret) {
          ret = SKIP_TEST;
          goto err_xcb;
      }
      device_id = xkb_x11_get_core_keyboard_device_id(conn);
      assert(device_id != -1);
  
      xkb_path = test_get_path("keymaps/host.xkb");
      assert(ret >= 0);
      xkbcomp_argv[2] = xkb_path;
      ret = posix_spawnp(&xkbcomp_pid, "xkbcomp", NULL, NULL, xkbcomp_argv, envp);
      free(xkb_path);
      if (ret != 0) {
          ret = SKIP_TEST;
          goto err_xcb;
      }
      ret = waitpid(xkbcomp_pid, &status, 0);
      if (ret < 0 || !WIFEXITED(status) || WEXITSTATUS(status) != 0) {
          ret = SKIP_TEST;
          goto err_xcb;
      }
  
      keymap = xkb_x11_keymap_new_from_device(ctx, conn, device_id,
                                              XKB_KEYMAP_COMPILE_NO_FLAGS);
      assert(keymap);
  
      original = test_read_file("keymaps/host.xkb");
      assert(original);
  
      dump = xkb_keymap_get_as_string(keymap, XKB_KEYMAP_USE_ORIGINAL_FORMAT);
      assert(dump);
  
      if (!streq(original, dump)) {
          fprintf(stderr,
                  "round-trip test failed: dumped map differs from original\n");
          fprintf(stderr, "length: dumped %lu, original %lu\n",
                  (unsigned long) strlen(dump),
                  (unsigned long) strlen(original));
          fprintf(stderr, "dumped map:\n");
          fprintf(stderr, "%s\n", dump);
          ret = 1;
          goto err_dump;
      }
  
      ret = 0;
  err_dump:
      free(original);
      free(dump);
      xkb_keymap_unref(keymap);
  err_xcb:
      xcb_disconnect(conn);
  err_xvfd:
      kill(xvfb_pid, SIGTERM);
  err_ctx:
      xkb_context_unref(ctx);
      return ret;
  }
  

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