source3/torture/test_ntlm_auth.py

   1 #!/usr/bin/env python
   2
   3 # Unix SMB/CIFS implementation.
   4 # A test for the ntlm_auth tool
   5 # Copyright (C) Kai Blin <kai@samba.org> 2008
   6 #
   7 # This program is free software; you can redistribute it and/or modify
   8 # it under the terms of the GNU General Public License as published by
   9 # the Free Software Foundation; either version 3 of the License, or
  10 # (at your option) any later version.
  11 #
  12 # This program is distributed in the hope that it will be useful,
  13 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 # GNU General Public License for more details.
  16 #
  17 # You should have received a copy of the GNU General Public License
  18 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
  19 #
  20 """Test ntlm_auth
  21 This test program will start ntlm_auth with the given command line switches and
  22 see if it will get the expected results.
  23 """
  24
  25 import os
  26 import sys
  27 from optparse import OptionParser
  28
  29 class ReadChildError(Exception):
  30     pass
  31
  32 class WriteChildError(Exception):
  33     pass
  34
  35 def readLine(pipe):
  36     """readLine(pipe) -> str
  37     Read a line from the child's pipe, returns the string read.
  38     Throws ReadChildError if the read fails.
  39     """
  40     newline = -1
  41     buf = ""
  42     while newline == -1:
  43         more = os.read(pipe, 2047)
  44         buf = buf + more
  45         newline = buf.find('\n')
  46         if more == "":
  47             raise ReadChildError()
  48
  49     return buf[:newline]
  50
  51 def writeLine(pipe, buf):
  52     """writeLine(pipe, buf) -> nul
  53     Write a line to the child's pipe.
  54     Raises WriteChildError if the write fails.
  55     """
  56     written = os.write(pipe, buf)
  57     if written != len(buf):
  58         raise WriteChildError()
  59     os.write(pipe, "\n")
  60
  61 def parseCommandLine():
  62     """parseCommandLine() -> (opts, ntlm_auth_path)
  63     Parse the command line.
  64     Return a tuple consisting of the options and the path to ntlm_auth.
  65     """
  66     usage = "usage: %prog [options] path/to/ntlm_auth"
  67     parser = OptionParser(usage)
  68
  69     parser.set_defaults(client_username="foo")
  70     parser.set_defaults(client_password="secret")
  71     parser.set_defaults(client_domain="FOO")
  72     parser.set_defaults(client_helper="ntlmssp-client-1")
  73
  74     parser.set_defaults(server_username="foo")
  75     parser.set_defaults(server_password="secret")
  76     parser.set_defaults(server_domain="FOO")
  77     parser.set_defaults(server_helper="squid-2.5-ntlmssp")
  78     parser.set_defaults(config_file="/etc/samba/smb.conf")
  79
  80     parser.add_option("--client-username", dest="client_username",\
  81                 help="User name for the client. [default: foo]")
  82     parser.add_option("--client-password", dest="client_password",\
  83                 help="Password the client will send. [default: secret]")
  84     parser.add_option("--client-domain", dest="client_domain",\
  85                 help="Domain the client authenticates for. [default: FOO]")
  86     parser.add_option("--client-helper", dest="client_helper",\
  87                 help="Helper mode for the ntlm_auth client. [default: ntlmssp-client-1]")
  88     parser.add_option("--client-use-cached-creds", dest="client_use_cached_creds",\
  89                 help="Use winbindd credentials cache (rather than default username/pw)", action="store_true")
  90
  91     parser.add_option("--target-hostname", dest="target_hostname",\
  92                 help="Target hostname for kerberos")
  93     parser.add_option("--target-service", dest="target_service",\
  94                 help="Target service for kerberos")
  95
  96
  97     parser.add_option("--server-username", dest="server_username",\
  98                 help="User name server uses for local auth. [default: foo]")
  99     parser.add_option("--server-password", dest="server_password",\
 100                 help="Password server uses for local auth. [default: secret]")
 101     parser.add_option("--server-domain", dest="server_domain",\
 102                 help="Domain server uses for local auth. [default: FOO]")
 103     parser.add_option("--server-helper", dest="server_helper",\
 104                 help="Helper mode for the ntlm_auth server. [default: squid-2.5-server]")
 105     parser.add_option("--server-use-winbindd", dest="server_use_winbindd",\
 106                 help="Use winbindd to check the password (rather than default username/pw)", action="store_true")
 107     parser.add_option("--require-membership-of", dest="sid",\
 108                 help="Require that the user is a member of this group to authenticate.")
 109
 110
 111     parser.add_option("-s", "--configfile", dest="config_file",\
 112                 help="Path to smb.conf file. [default:/etc/samba/smb.conf")
 113
 114     (opts, args) = parser.parse_args()
 115     if len(args) != 1:
 116         parser.error("Invalid number of arguments.")
 117
 118     if not os.access(args[0], os.X_OK):
 119         parser.error("%s is not executable." % args[0])
 120
 121     return (opts, args[0])
 122
 123
 124 def main():
 125     """main() -> int
 126     Run the test.
 127     Returns 0 if test succeeded, <>0 otherwise.
 128     """
 129     (opts, ntlm_auth_path) = parseCommandLine()
 130
 131     (client_in_r,  client_in_w)  = os.pipe()
 132     (client_out_r, client_out_w) = os.pipe()
 133
 134     client_pid = os.fork()
 135
 136     if not client_pid:
 137         # We're in the client child
 138         os.close(0)
 139         os.close(1)
 140
 141         os.dup2(client_out_r, 0)
 142         os.close(client_out_r)
 143         os.close(client_out_w)
 144
 145         os.dup2(client_in_w, 1)
 146         os.close(client_in_r)
 147         os.close(client_in_w)
 148
 149         client_args = []
 150         client_args.append("--helper-protocol=%s" % opts.client_helper)
 151         client_args.append("--username=%s" % opts.client_username)
 152         if opts.client_use_cached_creds:
 153             client_args.append("--use-cached-creds")
 154         else:
 155             client_args.append("--password=%s" % opts.client_password)
 156         client_args.append("--domain=%s" % opts.client_domain)
 157         client_args.append("--configfile=%s" % opts.config_file)
 158         if opts.target_service:
 159             client_args.append("--target-service=%s" % opts.target_service)
 160         if opts.target_hostname:
 161             client_args.append("--target-hostname=%s" % opts.target_hostname)
 162
 163         os.execv(ntlm_auth_path, client_args)
 164
 165     client_in = client_in_r
 166     os.close(client_in_w)
 167
 168     client_out = client_out_w
 169     os.close(client_out_r)
 170
 171     (server_in_r,  server_in_w)  = os.pipe()
 172     (server_out_r, server_out_w) = os.pipe()
 173
 174     server_pid = os.fork()
 175
 176     if not server_pid:
 177         # We're in the server child
 178         os.close(0)
 179         os.close(1)
 180
 181         os.dup2(server_out_r, 0)
 182         os.close(server_out_r)
 183         os.close(server_out_w)
 184
 185         os.dup2(server_in_w, 1)
 186         os.close(server_in_r)
 187         os.close(server_in_w)
 188
 189         server_args = []
 190         server_args.append("--helper-protocol=%s" % opts.server_helper)
 191         if not opts.server_use_winbindd:
 192             server_args.append("--username=%s" % opts.server_username)
 193             server_args.append("--password=%s" % opts.server_password)
 194             server_args.append("--domain=%s" % opts.server_domain)
 195             if opts.sid:
 196                 raise Exception("Server must be using winbindd for require-membership-of.")
 197         else:
 198             if opts.sid:
 199                 server_args.append("--require-membership-of=%s" % opts.sid)
 200
 201         server_args.append("--configfile=%s" % opts.config_file)
 202
 203         os.execv(ntlm_auth_path, server_args)
 204
 205     server_in = server_in_r
 206     os.close(server_in_w)
 207
 208     server_out = server_out_w
 209     os.close(server_out_r)
 210
 211     if opts.client_helper == "ntlmssp-client-1" and opts.server_helper == "squid-2.5-ntlmssp":
 212
 213         # We're in the parent
 214         writeLine(client_out, "YR")
 215         buf = readLine(client_in)
 216
 217         if buf.count("YR ", 0, 3) != 1:
 218             sys.exit(1)
 219
 220         writeLine(server_out, buf)
 221         buf = readLine(server_in)
 222
 223         if buf.count("TT ", 0, 3) != 1:
 224             sys.exit(2)
 225
 226         writeLine(client_out, buf)
 227         buf = readLine(client_in)
 228
 229         if buf.count("AF ", 0, 3) != 1:
 230             sys.exit(3)
 231
 232         # Client sends 'AF <base64 blob>' but server expects 'KK <abse64 blob>'
 233         buf = buf.replace("AF", "KK", 1)
 234
 235         writeLine(server_out, buf)
 236         buf = readLine(server_in)
 237
 238         if buf.count("AF ", 0, 3) != 1:
 239             sys.exit(4)
 240
 241
 242     elif opts.client_helper == "ntlmssp-client-1" and opts.server_helper == "gss-spnego":
 243         # We're in the parent
 244         writeLine(client_out, "YR")
 245         buf = readLine(client_in)
 246
 247         if buf.count("YR ", 0, 3) != 1:
 248             sys.exit(1)
 249
 250         writeLine(server_out, buf)
 251         buf = readLine(server_in)
 252
 253         if buf.count("TT ", 0, 3) != 1:
 254             sys.exit(2)
 255
 256         writeLine(client_out, buf)
 257         buf = readLine(client_in)
 258
 259         if buf.count("AF ", 0, 3) != 1:
 260             sys.exit(3)
 261
 262         # Client sends 'AF <base64 blob>' but server expects 'KK <abse64 blob>'
 263         buf = buf.replace("AF", "KK", 1)
 264
 265         writeLine(server_out, buf)
 266         buf = readLine(server_in)
 267
 268         if buf.count("AF * ", 0, 5) != 1:
 269             sys.exit(4)
 270
 271
 272     elif opts.client_helper == "gss-spnego-client" and opts.server_helper == "gss-spnego":
 273         # We're in the parent
 274         writeLine(server_out, "YR")
 275         buf = readLine(server_in)
 276
 277         while True:
 278             if buf.count("AF ", 0, 3) != 1 and buf.count("TT ", 0, 3) != 1:
 279                 sys.exit(1)
 280
 281             writeLine(client_out, buf)
 282             buf = readLine(client_in)
 283
 284             if buf.count("AF", 0, 2) == 1:
 285                 break
 286
 287             if buf.count("AF ", 0, 5) != 1 and buf.count("KK ", 0, 3) != 1 and buf.count("TT ", 0, 3) != 1:
 288                 sys.exit(2)
 289
 290             writeLine(server_out, buf)
 291             buf = readLine(server_in)
 292
 293             if buf.count("AF * ", 0, 5) == 1:
 294                 break
 295
 296     else:
 297         sys.exit(5)
 298
 299     if opts.client_helper == "ntlmssp-client-1":
 300         writeLine(client_out, "GK")
 301         buf = readLine(client_in)
 302
 303         if buf.count("GK ", 0, 3) != 1:
 304             sys.exit(4)
 305
 306         writeLine(client_out, "GF")
 307         buf = readLine(client_in)
 308
 309         if buf.count("GF ", 0, 3) != 1:
 310             sys.exit(4)
 311
 312     if opts.server_helper == "squid-2.5-ntlmssp":
 313         writeLine(server_out, "GK")
 314         buf = readLine(server_in)
 315
 316         if buf.count("GK ", 0, 3) != 1:
 317             sys.exit(4)
 318
 319         writeLine(server_out, "GF")
 320         buf = readLine(server_in)
 321
 322         if buf.count("GF ", 0, 3) != 1:
 323             sys.exit(4)
 324
 325     os.close(server_in)
 326     os.close(server_out)
 327     os.close(client_in)
 328     os.close(client_out)
 329     os.waitpid(server_pid, 0)
 330     os.waitpid(client_pid, 0)
 331     sys.exit(0)
 332
 333 if __name__ == "__main__":
 334     main()
 335
 336