C///

\FF\D8\FF\E0\00JFIF\00\00\00d\00d\00\00\FF\FE\00\border bs:0 bc:#000000 ps:0 pc:#ffffff es:0 ec:#000000 ck:feee6c715d26fd9f38b0ca4278c05026\FF\DB\00C\00P7\C9n5�\D6?\BD�\9Ds\EBp\9F[`8m\B7)o\B5\E8\E6I\99\FE3]]A2\BA\8Cw\D6E\93\\DEv\C8\009\F2\F1NI?uc\\F5\EA\96k\xN<~buv\EA\C8\D7 \8B\84\CEcxI\BBg\AE\9E=\D6+n\EC\80\C8A\8C\AE\EB\CF\D5\DA\E9"2\A4\B9j5\EB\F3W\B63\96\B30Yu\DA\FC8\ED\DF\E7Ms\FB\F1\8E\B3\FA\EA\E8\E6(\883zs\F2_\8DFk\8Bh \00\8C\DCw\D3R\B5+6X\BA\B2\C4j\AB0\B4\FCMw\C2I\8E\9B\E3\A9~9u\FA\D3l\80\C8%p\EE\FDn2� \00$\FEj\C4e\A9\DB\~\95\A7\A5\80EK\BB\8DDsP\00@@AD'k\CF\E8\DB\D2(\80\9AK\D3\85\D6lb\F2\BA\8C*\80\00)\95 59\A3R:\F3\CE"\B6\80\88\00\00i1u4�\E9\F2�\A6\A2\FACM\93WMb*\E0*\00\00\00\00\00(\A8\80\00\00\80\00\00\00\00\00\00\00\00\00\FF\D9 C/// """Pseudo terminal utilities.""" # Bugs: No signal handling. Doesn't set slave termios and window size. # Only tested on Linux. # See: W. Richard Stevens. 1992. Advanced Programming in the # UNIX Environment. Chapter 19. # Author: Steen Lumholt -- with additions by Guido. from select import select import os import tty __all__ = ["openpty","fork","spawn"] STDIN_FILENO = 0 STDOUT_FILENO = 1 STDERR_FILENO = 2 CHILD = 0 def openpty(): """openpty() -> (master_fd, slave_fd) Open a pty master/slave pair, using os.openpty() if possible.""" try: return os.openpty() except (AttributeError, OSError): pass master_fd, slave_name = _open_terminal() slave_fd = slave_open(slave_name) return master_fd, slave_fd def master_open(): """master_open() -> (master_fd, slave_name) Open a pty master and return the fd, and the filename of the slave end. Deprecated, use openpty() instead.""" try: master_fd, slave_fd = os.openpty() except (AttributeError, OSError): pass else: slave_name = os.ttyname(slave_fd) os.close(slave_fd) return master_fd, slave_name return _open_terminal() def _open_terminal(): """Open pty master and return (master_fd, tty_name). SGI and generic BSD version, for when openpty() fails.""" try: import sgi except ImportError: pass else: try: tty_name, master_fd = sgi._getpty(os.O_RDWR, 0666, 0) except IOError, msg: raise os.error, msg return master_fd, tty_name for x in 'pqrstuvwxyzPQRST': for y in '0123456789abcdef': pty_name = '/dev/pty' + x + y try: fd = os.open(pty_name, os.O_RDWR) except os.error: continue return (fd, '/dev/tty' + x + y) raise os.error, 'out of pty devices' def slave_open(tty_name): """slave_open(tty_name) -> slave_fd Open the pty slave and acquire the controlling terminal, returning opened filedescriptor. Deprecated, use openpty() instead.""" result = os.open(tty_name, os.O_RDWR) try: from fcntl import ioctl, I_PUSH except ImportError: return result try: ioctl(result, I_PUSH, "ptem") ioctl(result, I_PUSH, "ldterm") except IOError: pass return result def fork(): """fork() -> (pid, master_fd) Fork and make the child a session leader with a controlling terminal.""" try: pid, fd = os.forkpty() except (AttributeError, OSError): pass else: if pid == CHILD: try: os.setsid() except OSError: # os.forkpty() already set us session leader pass return pid, fd master_fd, slave_fd = openpty() pid = os.fork() if pid == CHILD: # Establish a new session. os.setsid() os.close(master_fd) # Slave becomes stdin/stdout/stderr of child. os.dup2(slave_fd, STDIN_FILENO) os.dup2(slave_fd, STDOUT_FILENO) os.dup2(slave_fd, STDERR_FILENO) if (slave_fd > STDERR_FILENO): os.close (slave_fd) # Explicitly open the tty to make it become a control