hw/xquartz/pbproxy/main.m

   1 /* main.m
   2  *
   3  * Copyright (c) 2002-2012 Apple Inc. All rights reserved.
   4  *
   5  * Permission is hereby granted, free of charge, to any person
   6  * obtaining a copy of this software and associated documentation files
   7  * (the "Software"), to deal in the Software without restriction,
   8  * including without limitation the rights to use, copy, modify, merge,
   9  * publish, distribute, sublicense, and/or sell copies of the Software,
  10  * and to permit persons to whom the Software is furnished to do so,
  11  * subject to the following conditions:
  12  *
  13  * The above copyright notice and this permission notice shall be
  14  * included in all copies or substantial portions of the Software.
  15  *
  16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  17  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  18  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  19  * NONINFRINGEMENT.  IN NO EVENT SHALL THE ABOVE LISTED COPYRIGHT
  20  * HOLDER(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
  21  * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  22  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  23  * DEALINGS IN THE SOFTWARE.
  24  *
  25  * Except as contained in this notice, the name(s) of the above
  26  * copyright holders shall not be used in advertising or otherwise to
  27  * promote the sale, use or other dealings in this Software without
  28  * prior written authorization.
  29  */
  30
  31 #include "pbproxy.h"
  32 #import "x-selection.h"
  33
  34 #include <pthread.h>
  35 #include <unistd.h>
  36 #include <X11/extensions/applewm.h>
  37
  38 Display *xpbproxy_dpy;
  39 int xpbproxy_apple_wm_event_base, xpbproxy_apple_wm_error_base;
  40 int xpbproxy_xfixes_event_base, xpbproxy_xfixes_error_base;
  41 BOOL xpbproxy_have_xfixes;
  42
  43 extern char *display;
  44
  45 #ifdef STANDALONE_XPBPROXY
  46 BOOL xpbproxy_is_standalone = NO;
  47 #endif
  48
  49 x_selection *_selection_object;
  50
  51 extern BOOL serverRunning;
  52 extern pthread_mutex_t serverRunningMutex;
  53 extern pthread_cond_t serverRunningCond;
  54
  55 static inline void
  56 wait_for_server_init(void)
  57 {
  58     /* If the server hasn't finished initializing, wait for it... */
  59     if (!serverRunning) {
  60         pthread_mutex_lock(&serverRunningMutex);
  61         while (!serverRunning)
  62             pthread_cond_wait(&serverRunningCond, &serverRunningMutex);
  63         pthread_mutex_unlock(&serverRunningMutex);
  64     }
  65 }
  66
  67 static int
  68 x_io_error_handler(Display *dpy)
  69 {
  70     /* We lost our connection to the server. */
  71
  72     TRACE();
  73
  74     /* trigger the thread to restart?
  75      *   NO - this would be to a "deeper" problem, and restarts would just
  76      *        make things worse...
  77      */
  78 #ifdef STANDALONE_XPBPROXY
  79     if (xpbproxy_is_standalone)
  80         exit(EXIT_FAILURE);
  81 #endif
  82
  83     /* Prevent _XIOError from calling exit() */
  84     pthread_exit(NULL);
  85     return 0;
  86 }
  87
  88 static int
  89 x_error_handler(Display *dpy, XErrorEvent *errevent)
  90 {
  91     return 0;
  92 }
  93
  94 int
  95 xpbproxy_run(void)
  96 {
  97     NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
  98     size_t i;
  99
 100     wait_for_server_init();
 101
 102     for (i = 0, xpbproxy_dpy = NULL; !xpbproxy_dpy && i < 5; i++) {
 103         xpbproxy_dpy = XOpenDisplay(NULL);
 104
 105         if (!xpbproxy_dpy && display) {
 106             char _display[32];
 107             snprintf(_display, sizeof(_display), ":%s", display);
 108             setenv("DISPLAY", _display, TRUE);
 109
 110             xpbproxy_dpy = XOpenDisplay(_display);
 111         }
 112         if (!xpbproxy_dpy)
 113             sleep(1);
 114     }
 115
 116     if (xpbproxy_dpy == NULL) {
 117         ErrorF("xpbproxy: can't open default display\n");
 118         [pool release];
 119         return EXIT_FAILURE;
 120     }
 121
 122     XSetIOErrorHandler(x_io_error_handler);
 123     XSetErrorHandler(x_error_handler);
 124
 125     if (!XAppleWMQueryExtension(xpbproxy_dpy, &xpbproxy_apple_wm_event_base,
 126                                 &xpbproxy_apple_wm_error_base)) {
 127         ErrorF("xpbproxy: can't open AppleWM server extension\n");
 128         [pool release];
 129         return EXIT_FAILURE;
 130     }
 131
 132     xpbproxy_have_xfixes =
 133         XFixesQueryExtension(xpbproxy_dpy, &xpbproxy_xfixes_event_base,
 134                              &xpbproxy_xfixes_error_base);
 135
 136     XAppleWMSelectInput(xpbproxy_dpy, AppleWMActivationNotifyMask |
 137                         AppleWMPasteboardNotifyMask);
 138
 139     _selection_object = [[x_selection alloc] init];
 140
 141     if (!xpbproxy_input_register()) {
 142         [pool release];
 143         return EXIT_FAILURE;
 144     }
 145
 146     [pool release];
 147
 148     CFRunLoopRun();
 149
 150     return EXIT_SUCCESS;
 151 }
 152
 153 id
 154 xpbproxy_selection_object(void)
 155 {
 156     return _selection_object;
 157 }
 158
 159 Time
 160 xpbproxy_current_timestamp(void)
 161 {
 162     /* FIXME: may want to fetch a timestamp from the server.. */
 163     return CurrentTime;
 164 }