payloads/libpayload/curses/PDCurses/x11/pdckbd.c

   1 /* Public Domain Curses */
   2
   3 #include "pdcx11.h"
   4
   5 RCSID("$Id: pdckbd.c,v 1.62 2008/07/14 04:24:52 wmcbrine Exp $")
   6
   7 /*man-start**************************************************************
   8
   9   Name:                                                         pdckbd
  10
  11   Synopsis:
  12         unsigned long PDC_get_input_fd(void);
  13
  14   Description:
  15         PDC_get_input_fd() returns the file descriptor that PDCurses
  16         reads its input from. It can be used for select().
  17
  18   Portability                                X/Open    BSD    SYS V
  19         PDC_get_input_fd                        -       -       -
  20
  21 **man-end****************************************************************/
  22
  23 /* check if a key or mouse event is waiting */
  24
  25 bool PDC_check_key(void)
  26 {
  27     struct timeval socket_timeout = {0};
  28     int s;
  29
  30     /* Is something ready to be read on the socket ? Must be a key. */
  31
  32     FD_ZERO(&xc_readfds);
  33     FD_SET(xc_key_sock, &xc_readfds);
  34
  35     if ((s = select(FD_SETSIZE, (FD_SET_CAST)&xc_readfds, NULL,
  36         NULL, &socket_timeout)) < 0)
  37         XCursesExitCursesProcess(3, "child - exiting from "
  38                                     "PDC_check_key select failed");
  39
  40     PDC_LOG(("%s:PDC_check_key() - returning %s\n", XCLOGMSG,
  41              s ? "TRUE" : "FALSE"));
  42
  43     return !!s;
  44 }
  45
  46 /* return the next available key or mouse event */
  47
  48 int PDC_get_key(void)
  49 {
  50     unsigned long newkey = 0;
  51     int key = 0;
  52
  53     if (XC_read_socket(xc_key_sock, &newkey, sizeof(unsigned long)) < 0)
  54         XCursesExitCursesProcess(2, "exiting from PDC_get_key");
  55
  56     pdc_key_modifiers = (newkey >> 24) & 0xFF;
  57     key = (int)(newkey & 0x00FFFFFF);
  58
  59     if (key == KEY_MOUSE && SP->key_code)
  60     {
  61         if (XC_read_socket(xc_key_sock, &pdc_mouse_status,
  62             sizeof(MOUSE_STATUS)) < 0)
  63             XCursesExitCursesProcess(2, "exiting from PDC_get_key");
  64     }
  65
  66     PDC_LOG(("%s:PDC_get_key() - key %d returned\n", XCLOGMSG, key));
  67
  68     return key;
  69 }
  70
  71 unsigned long PDC_get_input_fd(void)
  72 {
  73     PDC_LOG(("PDC_get_input_fd() - called\n"));
  74
  75     return xc_key_sock;
  76 }
  77
  78 void PDC_set_keyboard_binary(bool on)
  79 {
  80     PDC_LOG(("PDC_set_keyboard_binary() - called\n"));
  81 }
  82
  83 /* discard any pending keyboard or mouse input -- this is the core
  84    routine for flushinp() */
  85
  86 void PDC_flushinp(void)
  87 {
  88     PDC_LOG(("PDC_flushinp() - called\n"));
  89
  90     while (PDC_check_key())
  91         PDC_get_key();
  92 }
  93
  94 int PDC_mouse_set(void)
  95 {
  96     return OK;
  97 }
  98
  99 int PDC_modifiers_set(void)
 100 {
 101     return OK;
 102 }