Replaced slow pexpect with subprocess.popen which is fast. Implemented Results()...

[progcomp10.git] / src / link / pexpect / examples / ssh_tunnel.py

diff --git a/src/link/pexpect/examples/ssh_tunnel.py b/src/link/pexpect/examples/ssh_tunnel.py
deleted file mode 100755 (executable)
index 3c8bc09..0000000
--- a/src/link/pexpect/examples/ssh_tunnel.py
+++ /dev/null
@@ -1,72 +0,0 @@
-#!/usr/bin/env python
-
-"""This starts an SSH tunnel to a given host. If the SSH process ever dies then
-this script will detect that and restart it. I use this under Cygwin to keep
-open encrypted tunnels to port 25 (SMTP), port 143 (IMAP4), and port 110
-(POP3). I set my mail client to talk to localhost and I keep this script
-running in the background.
-
-Note that this is a rather stupid script at the moment because it just looks to
-see if any ssh process is running. It should really make sure that our specific
-ssh process is running. The problem is that ssh is missing a very useful
-feature. It has no way to report the process id of the background daemon that
-it creates with the -f command. This would be a really useful script if I could
-figure a way around this problem. """
-
-import pexpect
-import getpass
-import time
-
-# SMTP:25 IMAP4:143 POP3:110
-tunnel_command = 'ssh -C -N -f -L 25:127.0.0.1:25 -L 143:127.0.0.1:143 -L 110:127.0.0.1:110 %(user)@%(host)'
-host = raw_input('Hostname: ')
-user = raw_input('Username: ')
-X = getpass.getpass('Password: ')
-
-def get_process_info ():
-
-    # This seems to work on both Linux and BSD, but should otherwise be considered highly UNportable.
-
-    ps = pexpect.run ('ps ax -O ppid')
-    pass
-def start_tunnel ():
-    try:
-        ssh_tunnel = pexpect.spawn (tunnel_command % globals())
-        ssh_tunnel.expect ('password:')
-        time.sleep (0.1)
-        ssh_tunnel.sendline (X)
-        time.sleep (60) # Cygwin is slow to update process status.
-        ssh_tunnel.expect (pexpect.EOF)
-
-    except Exception, e:
-        print str(e)
-
-def main ():
-
-    while True:
-        ps = pexpect.spawn ('ps')
-        time.sleep (1)
-        index = ps.expect (['/usr/bin/ssh', pexpect.EOF, pexpect.TIMEOUT])
-        if index == 2:
-            print 'TIMEOUT in ps command...'
-            print str(ps)
-            time.sleep (13)
-        if index == 1:
-            print time.asctime(),
-            print 'restarting tunnel'
-            start_tunnel ()
-            time.sleep (11)
-               print 'tunnel OK'
-        else:
-            # print 'tunnel OK'
-            time.sleep (7)
-
-if __name__ == '__main__':
-    main ()
-
-# This was for older SSH versions that didn't have -f option
-#tunnel_command = 'ssh -C -n -L 25:%(host)s:25 -L 110:%(host)s:110 %(user)s@%(host)s -f nothing.sh'
-#nothing_script = """#!/bin/sh
-#while true; do sleep 53; done
-#"""
-