1 files changed, 180 insertions, 0 deletions
diff --git a/demos/demo.py b/demos/demo.py
new file mode 100755
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+++ b/demos/demo.py
@@ -0,0 +1,180 @@
+#!/usr/bin/env python
+
+# Copyright (C) 2003-2007  Robey Pointer <robey@lag.net>
+#
+# This file is part of paramiko.
+#
+# Paramiko is free software; you can redistribute it and/or modify it under the
+# terms of the GNU Lesser General Public License as published by the Free
+# Software Foundation; either version 2.1 of the License, or (at your option)
+# any later version.
+#
+# Paramiko is distrubuted in the hope that it will be useful, but WITHOUT ANY
+# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+# A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for more
+# details.
+#
+# You should have received a copy of the GNU Lesser General Public License
+# along with Paramiko; if not, write to the Free Software Foundation, Inc.,
+# 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA.
+
+
+import base64
+from binascii import hexlify
+import getpass
+import os
+import select
+import socket
+import sys
+import threading
+import time
+import traceback
+
+import paramiko
+import interactive
+
+
+def agent_auth(transport, username):
+    """
+    Attempt to authenticate to the given transport using any of the private
+    keys available from an SSH agent.
+    """
+    
+    agent = paramiko.Agent()
+    agent_keys = agent.get_keys()
+    if len(agent_keys) == 0:
+        return
+        
+    for key in agent_keys:
+        print 'Trying ssh-agent key %s' % hexlify(key.get_fingerprint()),
+        try:
+            transport.auth_publickey(username, key)
+            print '... success!'
+            return
+        except paramiko.SSHException:
+            print '... nope.'
+
+
+def manual_auth(username, hostname):
+    default_auth = 'p'
+    auth = raw_input('Auth by (p)assword, (r)sa key, or (d)ss key? [%s] ' % default_auth)
+    if len(auth) == 0:
+        auth = default_auth
+
+    if auth == 'r':
+        default_path = os.path.join(os.environ['HOME'], '.ssh', 'id_rsa')
+        path = raw_input('RSA key [%s]: ' % default_path)
+        if len(path) == 0:
+            path = default_path
+        try:
+            key = paramiko.RSAKey.from_private_key_file(path)
+        except paramiko.PasswordRequiredException:
+            password = getpass.getpass('RSA key password: ')
+            key = paramiko.RSAKey.from_private_key_file(path, password)
+        t.auth_publickey(username, key)
+    elif auth == 'd':
+        default_path = os.path.join(os.environ['HOME'], '.ssh', 'id_dsa')
+        path = raw_input('DSS key [%s]: ' % default_path)
+        if len(path) == 0:
+            path = default_path
+        try:
+            key = paramiko.DSSKey.from_private_key_file(path)
+        except paramiko.PasswordRequiredException:
+            password = getpass.getpass('DSS key password: ')
+            key = paramiko.DSSKey.from_private_key_file(path, password)
+        t.auth_publickey(username, key)
+    else:
+        pw = getpass.getpass('Password for %s@%s: ' % (username, hostname))
+        t.auth_password(username, pw)
+
+
+# setup logging
+paramiko.util.log_to_file('demo.log')
+
+username = ''
+if len(sys.argv) > 1:
+    hostname = sys.argv[1]
+    if hostname.find('@') >= 0:
+        username, hostname = hostname.split('@')
+else:
+    hostname = raw_input('Hostname: ')
+if len(hostname) == 0:
+    print '*** Hostname required.'
+    sys.exit(1)
+port = 22
+if hostname.find(':') >= 0:
+    hostname, portstr = hostname.split(':')
+    port = int(portstr)
+
+# now connect
+try:
+    sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
+    sock.connect((hostname, port))
+except Exception, e:
+    print '*** Connect failed: ' + str(e)
+    traceback.print_exc()
+    sys.exit(1)
+
+try:
+    t = paramiko.Transport(sock)
+    try:
+        t.start_client()
+    except paramiko.SSHException:
+        print '*** SSH negotiation failed.'
+        sys.exit(1)
+
+    try:
+        keys = paramiko.util.load_host_keys(os.path.expanduser('~/.ssh/known_hosts'))
+    except IOError:
+        try:
+            keys = paramiko.util.load_host_keys(os.path.expanduser('~/ssh/known_hosts'))
+        except IOError:
+            print '*** Unable to open host keys file'
+            keys = {}
+
+    # check server's host key -- this is important.
+    key = t.get_remote_server_key()
+    if not keys.has_key(hostname):
+        print '*** WARNING: Unknown host key!'
+    elif not keys[hostname].has_key(key.get_name()):
+        print '*** WARNING: Unknown host key!'
+    elif keys[hostname][key.get_name()] != key:
+        print '*** WARNING: Host key has changed!!!'
+        sys.exit(1)
+    else:
+        print '*** Host key OK.'
+
+    # get username
+    if username == '':
+        default_username = getpass.getuser()
+        username = raw_input('Username [%s]: ' % default_username)
+        if len(username) == 0:
+            username = default_username
+
+    agent_auth(t, username)
+    if not t.is_authenticated():
+        manual_auth(username, hostname)
+    if not t.is_authenticated():
+        print '*** Authentication failed. :('
+        t.close()
+        sys.exit(1)
+
+    chan = t.open_session()
+    chan.get_pty()
+    chan.invoke_shell()
+    print '*** Here we go!'
+    print
+    interactive.interactive_shell(chan)
+    chan.close()
+    t.close()
+
+except Exception, e:
+    print '*** Caught exception: ' + str(e.__class__) + ': ' + str(e)
+    traceback.print_exc()
+    try:
+        t.close()
+    except:
+        pass
+    sys.exit(1)
+
+