Add postfix_shell function. Add jumpserver.conf file.

jumpserver.conf

+#coding: utf8
+
+[jumpserver]

jumpserver.py

+#coding: utf8
+
+import socket
+import sys
+import os
+import select
+import time
+
+try:
+    import termios
+    import tty
+except ImportError:
+    print 'Only postfix supported.'
+    sys.exit()
+
+
+CURRENT_DIR = os.path.abspath('.')
+LOG_DIR = os.path.join(CURRENT_DIR, 'logs')
+
+
+def posix_shell(chan, user, host):
+    """
+    Use paramiko channel connect server and logging.
+    """
+    today = time.strftime('%Y%m%d')
+    today_log_dir = os.path.join(LOG_DIR, today)
+    time_now = time.strftime('%H%M%S')
+    log_filename = ''
+    old_tty = termios.tcgetattr(sys.stdin)
+    try:
+        tty.setraw(sys.stdin.fileno())
+        tty.setcbreak(sys.stdin.fileno())
+        chan.settimeout(0.0)
+
+        while True:
+            try:
+                r, w, e = select.select([chan, sys.stdin], [], [])
+            except:
+                pass
+
+            if chan in r:
+                try:
+                    x = chan.recv(1024)
+                    if len(x) == 0:
+                        break
+                    sys.stdout.write(x)
+                    sys.stdout.flush()
+                except socket.timeout:
+                    pass
+
+            if sys.stdin in r:
+                x = os.read(sys.stdin.fileno(), 1)
+                if len(x) == 0:
+                    break
+                chan.send(x)
+
+    finally:
+        termios.tcsetattr(sys.stdin, termios.TCSADRAIN, old_tty)
+