root / vncauthproxy / client.py @ 8b0f290d
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1 | 66d17b40 | Apollon Oikonomopoulos | #!/usr/bin/env python
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2 | 0c251ab5 | Apollon Oikonomopoulos | #
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3 | 7183f55d | Faidon Liambotis | # Copyright (c) 2010-2011 Greek Research and Technology Network S.A.
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4 | 0c251ab5 | Apollon Oikonomopoulos | #
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5 | 0c251ab5 | Apollon Oikonomopoulos | # This program is free software; you can redistribute it and/or modify
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6 | 0c251ab5 | Apollon Oikonomopoulos | # it under the terms of the GNU General Public License as published by
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7 | 0c251ab5 | Apollon Oikonomopoulos | # the Free Software Foundation; either version 2 of the License, or
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8 | 0c251ab5 | Apollon Oikonomopoulos | # (at your option) any later version.
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9 | 0c251ab5 | Apollon Oikonomopoulos | #
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10 | 0c251ab5 | Apollon Oikonomopoulos | # This program is distributed in the hope that it will be useful, but
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11 | 0c251ab5 | Apollon Oikonomopoulos | # WITHOUT ANY WARRANTY; without even the implied warranty of
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12 | 0c251ab5 | Apollon Oikonomopoulos | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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13 | 0c251ab5 | Apollon Oikonomopoulos | # General Public License for more details.
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14 | 0c251ab5 | Apollon Oikonomopoulos | #
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15 | 0c251ab5 | Apollon Oikonomopoulos | # You should have received a copy of the GNU General Public License
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16 | 0c251ab5 | Apollon Oikonomopoulos | # along with this program; if not, write to the Free Software
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17 | 0c251ab5 | Apollon Oikonomopoulos | # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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18 | 0c251ab5 | Apollon Oikonomopoulos | # 02110-1301, USA.
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19 | 66d17b40 | Apollon Oikonomopoulos | |
20 | 66d17b40 | Apollon Oikonomopoulos | import sys |
21 | 66d17b40 | Apollon Oikonomopoulos | import socket |
22 | 0b74ef50 | Stratos Psomadakis | import ssl |
23 | 66d17b40 | Apollon Oikonomopoulos | |
24 | 48b1400e | Vangelis Koukis | try:
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25 | 48b1400e | Vangelis Koukis | import simplejson as json |
26 | 48b1400e | Vangelis Koukis | except ImportError: |
27 | 48b1400e | Vangelis Koukis | import json |
28 | 48b1400e | Vangelis Koukis | |
29 | b129b0c0 | Stratos Psomadakis | try:
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30 | b129b0c0 | Stratos Psomadakis | from gevent import sleep |
31 | b129b0c0 | Stratos Psomadakis | except ImportError: |
32 | b129b0c0 | Stratos Psomadakis | import sleep |
33 | b129b0c0 | Stratos Psomadakis | |
34 | b129b0c0 | Stratos Psomadakis | DEFAULT_SERVER_ADDRESS = '127.0.0.1'
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35 | b129b0c0 | Stratos Psomadakis | DEFAULT_SERVER_PORT = 24999
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36 | 66d17b40 | Apollon Oikonomopoulos | |
37 | 31965126 | Vangelis Koukis | |
38 | 03a592b9 | Vangelis Koukis | def parse_arguments(args): |
39 | 03a592b9 | Vangelis Koukis | from optparse import OptionParser |
40 | 03a592b9 | Vangelis Koukis | |
41 | 03a592b9 | Vangelis Koukis | parser = OptionParser() |
42 | b129b0c0 | Stratos Psomadakis | parser.add_option("--server", dest="server_address", |
43 | b129b0c0 | Stratos Psomadakis | default=DEFAULT_SERVER_ADDRESS, |
44 | b129b0c0 | Stratos Psomadakis | metavar="SERVER",
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45 | cf328b06 | Stratos Psomadakis | help=("vncauthproxy server address"))
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46 | b129b0c0 | Stratos Psomadakis | parser.add_option("--server-port", dest="server_port", |
47 | b129b0c0 | Stratos Psomadakis | default=DEFAULT_SERVER_PORT, type="int",
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48 | b129b0c0 | Stratos Psomadakis | metavar="SERVER_PORT",
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49 | b129b0c0 | Stratos Psomadakis | help=("vncauthproxy port"))
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50 | 03a592b9 | Vangelis Koukis | parser.add_option('-s', dest="sport", |
51 | 03a592b9 | Vangelis Koukis | default=0, type="int", |
52 | 03a592b9 | Vangelis Koukis | metavar='PORT',
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53 | 03a592b9 | Vangelis Koukis | help=("Use source port PORT for incoming connections "
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54 | 03a592b9 | Vangelis Koukis | "(default: allocate a port automatically)"))
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55 | 03a592b9 | Vangelis Koukis | parser.add_option("-d", "--dest", |
56 | 03a592b9 | Vangelis Koukis | default=None, dest="daddr", |
57 | 03a592b9 | Vangelis Koukis | metavar="HOST",
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58 | 03a592b9 | Vangelis Koukis | help="Proxy connection to destination host HOST")
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59 | 03a592b9 | Vangelis Koukis | parser.add_option("-p", "--dport", dest="dport", |
60 | 03a592b9 | Vangelis Koukis | default=None, type="int", |
61 | 03a592b9 | Vangelis Koukis | metavar="PORT",
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62 | 03a592b9 | Vangelis Koukis | help="Proxy connection to destination port PORT")
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63 | 03a592b9 | Vangelis Koukis | parser.add_option("-P", "--password", dest="password", |
64 | 03a592b9 | Vangelis Koukis | default=None,
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65 | 03a592b9 | Vangelis Koukis | metavar="PASSWORD",
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66 | 03a592b9 | Vangelis Koukis | help=("Use password PASSWD to authenticate incoming "
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67 | 03a592b9 | Vangelis Koukis | "VNC connections"))
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68 | d49bd2fb | Stratos Psomadakis | parser.add_option("--auth-user", dest="auth_user", |
69 | d49bd2fb | Stratos Psomadakis | default=None,
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70 | d49bd2fb | Stratos Psomadakis | metavar="AUTH_USER",
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71 | d49bd2fb | Stratos Psomadakis | help=("User to authenticate as, for the control "
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72 | d49bd2fb | Stratos Psomadakis | "connection"))
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73 | d49bd2fb | Stratos Psomadakis | parser.add_option("--auth-password", dest="auth_password", |
74 | d49bd2fb | Stratos Psomadakis | default=None,
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75 | d49bd2fb | Stratos Psomadakis | metavar="AUTH_PASSWORD",
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76 | d49bd2fb | Stratos Psomadakis | help=("User password for the control connection "
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77 | d49bd2fb | Stratos Psomadakis | "authentication"))
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78 | d49bd2fb | Stratos Psomadakis | parser.add_option("--no-ssl", dest="no_ssl", |
79 | 6149f03e | Stratos Psomadakis | action='store_true', default=False, |
80 | d49bd2fb | Stratos Psomadakis | help=("Disable SSL/TLS for control connecions "
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81 | d49bd2fb | Stratos Psomadakis | "(default: %s)" % False)) |
82 | 6149f03e | Stratos Psomadakis | parser.add_option("--ca-cert", dest="ca_cert", |
83 | 6149f03e | Stratos Psomadakis | default=None,
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84 | 6149f03e | Stratos Psomadakis | metavar="CACERT",
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85 | 6149f03e | Stratos Psomadakis | help=("CA certificate file to use for server auth"))
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86 | 6149f03e | Stratos Psomadakis | parser.add_option("--strict", dest="strict", |
87 | 6149f03e | Stratos Psomadakis | default=False, action='store_true', |
88 | 6149f03e | Stratos Psomadakis | metavar="STRICT",
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89 | 6149f03e | Stratos Psomadakis | help=("Perform strict authentication on the server "
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90 | 6149f03e | Stratos Psomadakis | "SSL cert"))
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91 | 03a592b9 | Vangelis Koukis | |
92 | 03a592b9 | Vangelis Koukis | (opts, args) = parser.parse_args(args) |
93 | 03a592b9 | Vangelis Koukis | |
94 | 03a592b9 | Vangelis Koukis | # Mandatory arguments
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95 | 03a592b9 | Vangelis Koukis | if not opts.password: |
96 | 03a592b9 | Vangelis Koukis | parser.error("The -P/--password argument is mandatory.")
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97 | 03a592b9 | Vangelis Koukis | if not opts.daddr: |
98 | 03a592b9 | Vangelis Koukis | parser.error("The -d/--dest argument is mandatory.")
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99 | 03a592b9 | Vangelis Koukis | if not opts.dport: |
100 | 03a592b9 | Vangelis Koukis | parser.error("The -p/--dport argument is mandatory.")
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101 | d49bd2fb | Stratos Psomadakis | if not opts.auth_user: |
102 | d49bd2fb | Stratos Psomadakis | parser.error("The --auth-user argument is mandatory.")
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103 | d49bd2fb | Stratos Psomadakis | if not opts.auth_password: |
104 | d49bd2fb | Stratos Psomadakis | parser.error("The --auth-password argument is mandatory.")
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105 | 03a592b9 | Vangelis Koukis | |
106 | 6149f03e | Stratos Psomadakis | # Sanity check
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107 | 6149f03e | Stratos Psomadakis | if opts.strict and not opts.ca_cert: |
108 | 6149f03e | Stratos Psomadakis | parser.error("--strict requires --ca-cert to be set")
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109 | 6149f03e | Stratos Psomadakis | if opts.no_ssl and opts.ca_cert: |
110 | 6149f03e | Stratos Psomadakis | parser.error("--no-ssl and --ca-cert / --strict options "
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111 | 6149f03e | Stratos Psomadakis | "are mutually exclusive")
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112 | 6149f03e | Stratos Psomadakis | |
113 | 03a592b9 | Vangelis Koukis | return (opts, args)
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114 | 03a592b9 | Vangelis Koukis | |
115 | 03a592b9 | Vangelis Koukis | |
116 | 03a592b9 | Vangelis Koukis | def request_forwarding(sport, daddr, dport, password, |
117 | d49bd2fb | Stratos Psomadakis | auth_user, auth_password, |
118 | b129b0c0 | Stratos Psomadakis | server_address=DEFAULT_SERVER_ADDRESS, |
119 | 6149f03e | Stratos Psomadakis | server_port=DEFAULT_SERVER_PORT, no_ssl=False,
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120 | 6149f03e | Stratos Psomadakis | ca_cert=None, strict=False): |
121 | 03a592b9 | Vangelis Koukis | """Connect to vncauthproxy and request a VNC forwarding."""
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122 | 03a592b9 | Vangelis Koukis | if not password: |
123 | 03a592b9 | Vangelis Koukis | raise ValueError("You must specify a non-empty password") |
124 | 03a592b9 | Vangelis Koukis | |
125 | 48b1400e | Vangelis Koukis | req = { |
126 | 48b1400e | Vangelis Koukis | "source_port": int(sport), |
127 | 48b1400e | Vangelis Koukis | "destination_address": daddr,
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128 | 48b1400e | Vangelis Koukis | "destination_port": int(dport), |
129 | b129b0c0 | Stratos Psomadakis | "password": password,
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130 | d49bd2fb | Stratos Psomadakis | "auth_user": auth_user,
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131 | d49bd2fb | Stratos Psomadakis | "auth_password": auth_password,
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132 | 48b1400e | Vangelis Koukis | } |
133 | 66d17b40 | Apollon Oikonomopoulos | |
134 | 8b0f290d | Stratos Psomadakis | last_error = None
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135 | b129b0c0 | Stratos Psomadakis | retries = 5
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136 | b129b0c0 | Stratos Psomadakis | while retries:
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137 | b129b0c0 | Stratos Psomadakis | # Initiate server connection
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138 | b129b0c0 | Stratos Psomadakis | for res in socket.getaddrinfo(server_address, server_port, |
139 | b129b0c0 | Stratos Psomadakis | socket.AF_UNSPEC, |
140 | b129b0c0 | Stratos Psomadakis | socket.SOCK_STREAM, 0,
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141 | b129b0c0 | Stratos Psomadakis | socket.AI_PASSIVE): |
142 | b129b0c0 | Stratos Psomadakis | af, socktype, proto, canonname, sa = res |
143 | b129b0c0 | Stratos Psomadakis | try:
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144 | b129b0c0 | Stratos Psomadakis | server = socket.socket(af, socktype, proto) |
145 | b129b0c0 | Stratos Psomadakis | except socket.error:
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146 | b129b0c0 | Stratos Psomadakis | server = None
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147 | b129b0c0 | Stratos Psomadakis | continue
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148 | b129b0c0 | Stratos Psomadakis | |
149 | d49bd2fb | Stratos Psomadakis | if not no_ssl: |
150 | 6149f03e | Stratos Psomadakis | reqs = ssl.CERT_NONE |
151 | 6149f03e | Stratos Psomadakis | if strict:
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152 | 6149f03e | Stratos Psomadakis | reqs = ssl.CERT_REQUIRED |
153 | 6149f03e | Stratos Psomadakis | elif ca_cert:
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154 | 6149f03e | Stratos Psomadakis | reqs = ssl.CERT_OPTIONAL |
155 | 6149f03e | Stratos Psomadakis | |
156 | 0b74ef50 | Stratos Psomadakis | server = ssl.wrap_socket( |
157 | 6149f03e | Stratos Psomadakis | server, cert_reqs=reqs, ca_certs=ca_cert, |
158 | 0b74ef50 | Stratos Psomadakis | ssl_version=ssl.PROTOCOL_TLSv1) |
159 | 0b74ef50 | Stratos Psomadakis | |
160 | b129b0c0 | Stratos Psomadakis | server.settimeout(60.0)
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161 | b129b0c0 | Stratos Psomadakis | |
162 | b129b0c0 | Stratos Psomadakis | try:
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163 | b129b0c0 | Stratos Psomadakis | server.connect(sa) |
164 | 8b0f290d | Stratos Psomadakis | except socket.error as err: |
165 | b129b0c0 | Stratos Psomadakis | server.close() |
166 | b129b0c0 | Stratos Psomadakis | server = None
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167 | d49bd2fb | Stratos Psomadakis | retries -= 1
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168 | 8b0f290d | Stratos Psomadakis | last_error = err |
169 | b129b0c0 | Stratos Psomadakis | continue
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170 | b129b0c0 | Stratos Psomadakis | |
171 | b129b0c0 | Stratos Psomadakis | retries = 0
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172 | b129b0c0 | Stratos Psomadakis | break
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173 | b129b0c0 | Stratos Psomadakis | |
174 | b129b0c0 | Stratos Psomadakis | sleep(0.2)
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175 | b129b0c0 | Stratos Psomadakis | |
176 | b129b0c0 | Stratos Psomadakis | if server is None: |
177 | 8b0f290d | Stratos Psomadakis | raise Exception("Failed to connect to server: %s" % last_error) |
178 | b129b0c0 | Stratos Psomadakis | |
179 | b129b0c0 | Stratos Psomadakis | server.send(json.dumps(req)) |
180 | b129b0c0 | Stratos Psomadakis | |
181 | b129b0c0 | Stratos Psomadakis | response = server.recv(1024)
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182 | b129b0c0 | Stratos Psomadakis | server.close() |
183 | 48b1400e | Vangelis Koukis | res = json.loads(response) |
184 | 48b1400e | Vangelis Koukis | return res
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185 | 66d17b40 | Apollon Oikonomopoulos | |
186 | 03a592b9 | Vangelis Koukis | |
187 | 66d17b40 | Apollon Oikonomopoulos | if __name__ == '__main__': |
188 | 03a592b9 | Vangelis Koukis | (opts, args) = parse_arguments(sys.argv[1:])
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189 | 03a592b9 | Vangelis Koukis | |
190 | 03a592b9 | Vangelis Koukis | res = request_forwarding(sport=opts.sport, daddr=opts.daddr, |
191 | d49bd2fb | Stratos Psomadakis | dport=opts.dport, password=opts.password, |
192 | d49bd2fb | Stratos Psomadakis | auth_user=opts.auth_user, |
193 | d49bd2fb | Stratos Psomadakis | auth_password=opts.auth_password, |
194 | 6149f03e | Stratos Psomadakis | no_ssl=opts.no_ssl, ca_cert=opts.ca_cert, |
195 | 6149f03e | Stratos Psomadakis | strict=opts.strict) |
196 | d49bd2fb | Stratos Psomadakis | |
197 | d49bd2fb | Stratos Psomadakis | reason = None
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198 | d49bd2fb | Stratos Psomadakis | if 'reason' in res: |
199 | d49bd2fb | Stratos Psomadakis | reason = 'Reason: %s\n' % res['reason'] |
200 | d49bd2fb | Stratos Psomadakis | sys.stderr.write("Forwaring %s -> %s:%s: %s\n%s" % (res['source_port'], |
201 | 03a592b9 | Vangelis Koukis | opts.daddr, opts.dport, |
202 | d49bd2fb | Stratos Psomadakis | res['status'], reason))
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203 | 03a592b9 | Vangelis Koukis | |
204 | 48b1400e | Vangelis Koukis | if res['status'] == "OK": |
205 | 48b1400e | Vangelis Koukis | sys.exit(0)
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206 | 48b1400e | Vangelis Koukis | else:
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207 | 48b1400e | Vangelis Koukis | sys.exit(1) |