qtwin.cpp

ReactOS是一些高手根据Windows XP的内核编写出的类XP。内核实现机理和API函数调用几乎相同。甚至可以兼容XP的程序。喜欢研究系统内核的人可以看一看。

{
  int i, x, y, dx, dy;

  if (npoints > 0)
  {
    x = points[0].x;
    y = points[0].y;
    for (i = 1; i < npoints; i++)
    {
      dx = points[i].x;
      dy = points[i].y;
      ui_line(opcode, x, y, x + dx, y + dy, pen);
      x = x + dx;
      y = y + dy;
    }
  }
}

/*****************************************************************************/
void ui_ellipse(uint8 opcode, uint8 fillmode,
                int x, int y, int cx, int cy,
                BRUSH * brush, int bgcolour, int fgcolour)
{
}

/*****************************************************************************/
void generate_random(uint8 * random)
{
  QFile File("/dev/random");
  File.open(IO_ReadOnly);
  if (File.readBlock((char*)random, 32) == 32)
  {
    return;
  }
  warning("no /dev/random\n");
  memcpy(random, "12345678901234567890123456789012", 32);
}

/*****************************************************************************/
void save_licence(uint8 * data, int length)
{
  char * home, * path, * tmppath;
  int fd;

  home = getenv("HOME");
  if (home == NULL)
  {
    return;
  }
  path = (char *) xmalloc(strlen(home) + strlen(g_hostname) +
                          sizeof("/.rdesktop/licence."));
  sprintf(path, "%s/.rdesktop", home);
  if ((mkdir(path, 0700) == -1) && errno != EEXIST)
  {
    perror(path);
    return;
  }
  /* write licence to licence.hostname.new, then atomically rename to
     licence.hostname */
  sprintf(path, "%s/.rdesktop/licence.%s", home, g_hostname);
  tmppath = (char *) xmalloc(strlen(path) + sizeof(".new"));
  strcpy(tmppath, path);
  strcat(tmppath, ".new");
  fd = open(tmppath, O_WRONLY | O_CREAT | O_TRUNC, 0600);
  if (fd == -1)
  {
    perror(tmppath);
    return;
  }
  if (write(fd, data, length) != length)
  {
    perror(tmppath);
    unlink(tmppath);
  }
  else if (rename(tmppath, path) == -1)
  {
    perror(path);
    unlink(tmppath);
  }
  close(fd);
  xfree(tmppath);
  xfree(path);
}

/*****************************************************************************/
int load_licence(uint8 ** data)
{
  char * home, * path;
  struct stat st;
  int fd, length;

  home = getenv("HOME");
  if (home == NULL)
  {
    return -1;
  }
  path = (char *) xmalloc(strlen(home) + strlen(g_hostname) +
                          sizeof("/.rdesktop/licence."));
  sprintf(path, "%s/.rdesktop/licence.%s", home, g_hostname);
  fd = open(path, O_RDONLY);
  if (fd == -1)
  {
    return -1;
  }
  if (fstat(fd, &st))
  {
    return -1;
  }
  *data = (uint8 *) xmalloc(st.st_size);
  length = read(fd, *data, st.st_size);
  close(fd);
  xfree(path);
  return length;
}

/*****************************************************************************/
void* xrealloc(void * in_val, int size)
{
  return realloc(in_val, size);
}

/*****************************************************************************/
void* xmalloc(int size)
{
  return malloc(size);
}

/*****************************************************************************/
void xfree(void * in_val)
{
  if (in_val != NULL)
  {
    free(in_val);
  }
}

/*****************************************************************************/
char * xstrdup(const char * s)
{
  char * mem = strdup(s);
  if (mem == NULL)
  {
    perror("strdup");
    exit(1);
  }
  return mem;
}

/*****************************************************************************/
void warning(char * format, ...)
{
  va_list ap;

  fprintf(stderr, "WARNING: ");
  va_start(ap, format);
  vfprintf(stderr, format, ap);
  va_end(ap);
}

/*****************************************************************************/
void unimpl(char * format, ...)
{
  va_list ap;

  fprintf(stderr, "NOT IMPLEMENTED: ");
  va_start(ap, format);
  vfprintf(stderr, format, ap);
  va_end(ap);
}

/*****************************************************************************/
void error(char * format, ...)
{
  va_list ap;

  fprintf(stderr, "ERROR: ");
  va_start(ap, format);
  vfprintf(stderr, format, ap);
  va_end(ap);
}

/*****************************************************************************/
void out_params(void)
{
  fprintf(stderr, "rdesktop: A Remote Desktop Protocol client.\n");
  fprintf(stderr, "Version " VERSION ". Copyright (C) 1999-2005 Matt Chapman.\n");
  fprintf(stderr, "QT uiport by Jay Sorg\n");
  fprintf(stderr, "See http://www.rdesktop.org/ for more information.\n\n");
  fprintf(stderr, "Usage: qtrdesktop [options] server\n");
  fprintf(stderr, "   -g WxH: desktop geometry\n");
  fprintf(stderr, "   -4: use RDP version 4\n");
  fprintf(stderr, "   -5: use RDP version 5 (default)\n");
  fprintf(stderr, "   -t 3389: tcp port)\n");
  fprintf(stderr, "   -a 8|16|24: connection colour depth\n");
  fprintf(stderr, "   -T title: window title\n");
  fprintf(stderr, "   -P: use persistent bitmap caching\n");
  fprintf(stderr, "   -0: attach to console\n");
  fprintf(stderr, "   -z: enable rdp compression\n");
  fprintf(stderr, "   -r sound: enable sound\n");
  fprintf(stderr, "\n");
}

/*****************************************************************************/
/* produce a hex dump */
void hexdump(uint8 * p, uint32 len)
{
  uint8 * line = p;
  int i, thisline;
  uint32 offset = 0;

  while (offset < len)
  {
    printf("%04x ", offset);
    thisline = len - offset;
    if (thisline > 16)
    {
      thisline = 16;
    }
    for (i = 0; i < thisline; i++)
    {
      printf("%02x ", line[i]);
    }
    for (; i < 16; i++)
    {
      printf("   ");
    }
    for (i = 0; i < thisline; i++)
    {
      printf("%c", (line[i] >= 0x20 && line[i] < 0x7f) ? line[i] : '.');
    }
    printf("\n");
    offset += thisline;
    line += thisline;
  }
}

/*****************************************************************************/
int rd_pstcache_mkdir(void)
{
  char * home;
  char bmpcache_dir[256];

  home = getenv("HOME");
  if (home == NULL)
  {
    return False;
  }
  sprintf(bmpcache_dir, "%s/%s", home, ".rdesktop");
  if ((mkdir(bmpcache_dir, S_IRWXU) == -1) && errno != EEXIST)
  {
    perror(bmpcache_dir);
    return False;
  }
  sprintf(bmpcache_dir, "%s/%s", home, ".rdesktop/cache");
  if ((mkdir(bmpcache_dir, S_IRWXU) == -1) && errno != EEXIST)
  {
    perror(bmpcache_dir);
    return False;
  }
  return True;
}

/*****************************************************************************/
int rd_open_file(char * filename)
{
  char * home;
  char fn[256];
  int fd;

  home = getenv("HOME");
  if (home == NULL)
  {
    return -1;
  }
  sprintf(fn, "%s/.rdesktop/%s", home, filename);
  fd = open(fn, O_RDWR | O_CREAT, S_IRUSR | S_IWUSR);
  if (fd == -1)
  {
    perror(fn);
  }
  return fd;
}

/*****************************************************************************/
void rd_close_file(int fd)
{
  close(fd);
}

/*****************************************************************************/
int rd_read_file(int fd, void * ptr, int len)
{
  return read(fd, ptr, len);
}

/*****************************************************************************/
int rd_write_file(int fd, void * ptr, int len)
{
  return write(fd, ptr, len);
}

/*****************************************************************************/
int rd_lseek_file(int fd, int offset)
{
  return lseek(fd, offset, SEEK_SET);
}

/*****************************************************************************/
int rd_lock_file(int fd, int start, int len)
{
  struct flock lock;

  lock.l_type = F_WRLCK;
  lock.l_whence = SEEK_SET;
  lock.l_start = start;
  lock.l_len = len;
  if (fcntl(fd, F_SETLK, &lock) == -1)
  {
    return False;
  }
  return True;
}

/*****************************************************************************/
void get_username_and_hostname(void)
{
  char fullhostname[64];
  char * p;
  struct passwd * pw;

  STRNCPY(g_username, "unknown", sizeof(g_username));
  STRNCPY(g_hostname, "unknown", sizeof(g_hostname));
  pw = getpwuid(getuid());
  if (pw != NULL && pw->pw_name != NULL)
  {
    STRNCPY(g_username, pw->pw_name, sizeof(g_username));
  }
  if (gethostname(fullhostname, sizeof(fullhostname)) != -1)
  {
    p = strchr(fullhostname, '.');
    if (p != NULL)
    {
      *p = 0;
    }
    STRNCPY(g_hostname, fullhostname, sizeof(g_hostname));
  }
}

/*****************************************************************************/
int parse_parameters(int in_argc, char ** in_argv)
{
  int i;
  char * p;

  if (in_argc <= 1)
  {
    out_params();
    return 0;
  }
  g_argc = in_argc;
  g_argv = in_argv;
  for (i = 1; i < in_argc; i++)
  {
    strcpy(g_servername, in_argv[i]);
    if (strcmp(in_argv[i], "-g") == 0)
    {
      g_width = strtol(in_argv[i + 1], &p, 10);
      if (g_width <= 0)
      {
        error("invalid geometry\n");
        return 0;
      }
      if (*p == 'x')
      {
        g_height = strtol(p + 1, NULL, 10);
      }
      if (g_height <= 0)
      {
        error("invalid geometry\n");
        return 0;
      }
      g_width = (g_width + 3) & ~3;
    }
    else if (strcmp(in_argv[i], "-T") == 0)
    {
      strcpy(g_title, in_argv[i + 1]);
    }
    else if (strcmp(in_argv[i], "-4") == 0)
    {
      g_use_rdp5 = 0;
    }
    else if (strcmp(in_argv[i], "-5") == 0)
    {
      g_use_rdp5 = 1;
    }
    else if (strcmp(in_argv[i], "-a") == 0)
    {
      g_server_depth = strtol(in_argv[i + 1], &p, 10);
      if (g_server_depth != 8 && g_server_depth != 15 &&
          g_server_depth != 16 && g_server_depth != 24)
      {
        error("invalid bpp\n");
        return 0;
      }
    }
    else if (strcmp(in_argv[i], "-t") == 0)
    {
      g_tcp_port_rdp = strtol(in_argv[i + 1], &p, 10);
    }
    else if (strcmp(in_argv[i], "-P") == 0)
    {
      g_bitmap_cache_persist_enable = 1;
    }
    else if (strcmp(in_argv[i], "-0") == 0)
    {
      g_console_session = 1;
    }
    else if (strcmp(in_argv[i], "-z") == 0)
    {
      g_flags |= (RDP_LOGON_COMPRESSION | RDP_LOGON_COMPRESSION2);
    }
    else if (strcmp(in_argv[i], "-r") == 0)
    {
      if (strcmp(in_argv[i + 1], "sound") == 0)
      {
#ifdef WITH_RDPSND
        g_rdpsnd = 1;
#endif
      }
    }
  }
  return 1;
}

/*****************************************************************************/
int main(int in_argc, char** in_argv)
{
  get_username_and_hostname();
  if (!parse_parameters(in_argc, in_argv))
  {
    return 0;
  }
  if (!ui_init())
  {
    return 1;
  }
  if (!ui_create_window())
  {
    return 1;
  }
  ui_main_loop();
  ui_destroy_window();
  ui_deinit();
  return 0;
}