source4/torture/rpc/remote_pac.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3
   4    test suite for netlogon PAC operations
   5
   6    Copyright (C) Andrew Bartlett <abartlet@samba.org> 2008
   7
   8    This program is free software; you can redistribute it and/or modify
   9    it under the terms of the GNU General Public License as published by
  10    the Free Software Foundation; either version 3 of the License, or
  11    (at your option) any later version.
  12
  13    This program is distributed in the hope that it will be useful,
  14    but WITHOUT ANY WARRANTY; without even the implied warranty of
  15    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16    GNU General Public License for more details.
  17
  18    You should have received a copy of the GNU General Public License
  19    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  20 */
  21
  22 #include "includes.h"
  23 #include "torture/torture.h"
  24 #include "lib/events/events.h"
  25 #include "auth/auth.h"
  26 #include "auth/gensec/gensec.h"
  27 #include "lib/cmdline/popt_common.h"
  28 #include "torture/rpc/rpc.h"
  29 #include "torture/rpc/netlogon.h"
  30 #include "libcli/auth/libcli_auth.h"
  31 #include "librpc/gen_ndr/ndr_netlogon_c.h"
  32 #include "librpc/gen_ndr/ndr_krb5pac.h"
  33 #include "param/param.h"
  34 #include "lib/messaging/irpc.h"
  35 #include "cluster/cluster.h"
  36
  37 #define TEST_MACHINE_NAME "torturepactest"
  38
  39 /* Check to see if we can pass the PAC across to the NETLOGON server for validation */
  40
  41 /* Also happens to be a really good one-step verfication of our Kerberos stack */
  42
  43 static bool test_PACVerify(struct torture_context *tctx,
  44                            struct dcerpc_pipe *p,
  45                            struct cli_credentials *credentials)
  46 {
  47         NTSTATUS status;
  48
  49         struct netr_LogonSamLogon r;
  50
  51         struct netr_GenericInfo generic;
  52         struct netr_Authenticator auth, auth2;
  53
  54
  55         struct creds_CredentialState *creds;
  56         struct gensec_security *gensec_client_context;
  57         struct gensec_security *gensec_server_context;
  58
  59         struct messaging_context *msg_server_ctx;
  60         DATA_BLOB client_to_server, server_to_client, pac_wrapped, payload;
  61         struct PAC_Validate pac_wrapped_struct;
  62
  63         enum ndr_err_code ndr_err;
  64
  65         struct auth_session_info *session_info;
  66
  67         char *tmp_dir;
  68
  69         TALLOC_CTX *tmp_ctx = talloc_new(tctx);
  70
  71         int i;
  72
  73         torture_assert(tctx, tmp_ctx != NULL, "talloc_new() failed");
  74
  75         if (!test_SetupCredentials2(p, tctx, NETLOGON_NEG_AUTH2_ADS_FLAGS,
  76                                     credentials, SEC_CHAN_BDC,
  77                                     &creds)) {
  78                 return false;
  79         }
  80
  81         status = torture_temp_dir(tctx, "PACVerify", &tmp_dir);
  82         torture_assert_ntstatus_ok(tctx, status, "torture_temp_dir failed");
  83
  84         msg_server_ctx = messaging_init(tctx,
  85                                         tmp_dir,
  86                                         cluster_id(0, 1),
  87                                         lp_iconv_convenience(tctx->lp_ctx),
  88                                         tctx->ev);
  89
  90         torture_assert(tctx, msg_server_ctx != NULL, "Failed to init messaging context");
  91
  92         status = gensec_client_start(tctx, &gensec_client_context, tctx->ev, tctx->lp_ctx);
  93         torture_assert_ntstatus_ok(tctx, status, "gensec_client_start (client) failed");
  94
  95         status = gensec_set_target_hostname(gensec_client_context, TEST_MACHINE_NAME);
  96
  97         status = gensec_set_credentials(gensec_client_context, cmdline_credentials);
  98         torture_assert_ntstatus_ok(tctx, status, "gensec_set_credentials (client) failed");
  99
 100         status = gensec_start_mech_by_sasl_name(gensec_client_context, "GSSAPI");
 101         torture_assert_ntstatus_ok(tctx, status, "gensec_start_mech_by_sasl_name (client) failed");
 102
 103         status = gensec_server_start(tctx, tctx->ev, tctx->lp_ctx, msg_server_ctx, &gensec_server_context);
 104         torture_assert_ntstatus_ok(tctx, status, "gensec_server_start (server) failed");
 105
 106         status = gensec_set_credentials(gensec_server_context, credentials);
 107         torture_assert_ntstatus_ok(tctx, status, "gensec_set_credentials (server) failed");
 108
 109         status = gensec_start_mech_by_sasl_name(gensec_server_context, "GSSAPI");
 110         torture_assert_ntstatus_ok(tctx, status, "gensec_start_mech_by_sasl_name (server) failed");
 111
 112         server_to_client = data_blob(NULL, 0);
 113
 114         do {
 115                 /* Do a client-server update dance */
 116                 status = gensec_update(gensec_client_context, tmp_ctx, server_to_client, &client_to_server);
 117                 if (!NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {;
 118                         torture_assert_ntstatus_ok(tctx, status, "gensec_update (client) failed");
 119                 }
 120
 121                 if (client_to_server.length == 0) {
 122                         break;
 123                 }
 124
 125                 status = gensec_update(gensec_server_context, tmp_ctx, client_to_server, &server_to_client);
 126                 if (!NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {;
 127                         torture_assert_ntstatus_ok(tctx, status, "gensec_update (server) failed");
 128                 }
 129
 130                 if (server_to_client.length == 0) {
 131                         break;
 132                 }
 133         } while (1);
 134
 135         /* Extract the PAC using Samba's code */
 136
 137         status = gensec_session_info(gensec_server_context, &session_info);
 138         torture_assert_ntstatus_ok(tctx, status, "gensec_session_info failed");
 139
 140         pac_wrapped_struct.MessageType = 0x3;
 141         pac_wrapped_struct.ChecksumLength = session_info->server_info->pac_srv_sig.signature.length;
 142         pac_wrapped_struct.SignatureType = session_info->server_info->pac_kdc_sig.type;
 143         pac_wrapped_struct.SignatureLength = session_info->server_info->pac_kdc_sig.signature.length;
 144         pac_wrapped_struct.ChecksumAndSignature = payload
 145                 = data_blob_talloc(tmp_ctx, NULL,
 146                                    pac_wrapped_struct.ChecksumLength
 147                                    + pac_wrapped_struct.SignatureLength);
 148         memcpy(&payload.data[0],
 149                session_info->server_info->pac_srv_sig.signature.data,
 150                pac_wrapped_struct.ChecksumLength);
 151         memcpy(&payload.data[pac_wrapped_struct.ChecksumLength],
 152                session_info->server_info->pac_kdc_sig.signature.data,
 153                pac_wrapped_struct.SignatureLength);
 154
 155         ndr_err = ndr_push_struct_blob(&pac_wrapped, tmp_ctx, lp_iconv_convenience(tctx->lp_ctx), &pac_wrapped_struct,
 156                                        (ndr_push_flags_fn_t)ndr_push_PAC_Validate);
 157         torture_assert(tctx, NDR_ERR_CODE_IS_SUCCESS(ndr_err), "ndr_push_struct_blob of PACValidate structure failed");
 158
 159         torture_assert(tctx, (creds->negotiate_flags & NETLOGON_NEG_ARCFOUR), "not willing to even try a PACValidate without RC4 encryption");
 160         creds_arcfour_crypt(creds, pac_wrapped.data, pac_wrapped.length);
 161
 162         generic.length = pac_wrapped.length;
 163         generic.data = pac_wrapped.data;
 164
 165         /* Validate it over the netlogon pipe */
 166
 167         generic.identity_info.parameter_control = 0;
 168         generic.identity_info.logon_id_high = 0;
 169         generic.identity_info.logon_id_low = 0;
 170         generic.identity_info.domain_name.string = session_info->server_info->domain_name;
 171         generic.identity_info.account_name.string = session_info->server_info->account_name;
 172         generic.identity_info.workstation.string = TEST_MACHINE_NAME;
 173
 174         generic.package_name.string = "Kerberos";
 175
 176         ZERO_STRUCT(auth2);
 177         creds_client_authenticator(creds, &auth);
 178         r.in.credential = &auth;
 179         r.in.return_authenticator = &auth2;
 180         r.in.logon_level = NetlogonGenericInformation;
 181         r.in.logon.generic = &generic;
 182         r.in.server_name = talloc_asprintf(tctx, "\\\\%s", dcerpc_server_name(p));
 183         r.in.computer_name = cli_credentials_get_workstation(credentials);
 184         r.in.validation_level = NetlogonValidationGenericInfo2;
 185
 186         status = dcerpc_netr_LogonSamLogon(p, tctx, &r);
 187
 188         torture_assert_ntstatus_ok(tctx, status, "LogonSamLogon failed");
 189
 190         /* This will break the signature nicely (even in the crypto wrapping), check we get a logon failure */
 191         generic.data[generic.length-1]++;
 192
 193         ZERO_STRUCT(auth2);
 194         creds_client_authenticator(creds, &auth);
 195         r.in.credential = &auth;
 196         r.in.return_authenticator = &auth2;
 197         r.in.logon_level = NetlogonGenericInformation;
 198         r.in.logon.generic = &generic;
 199         r.in.server_name = talloc_asprintf(tctx, "\\\\%s", dcerpc_server_name(p));
 200         r.in.computer_name = cli_credentials_get_workstation(credentials);
 201         r.in.validation_level = NetlogonValidationGenericInfo2;
 202
 203         status = dcerpc_netr_LogonSamLogon(p, tctx, &r);
 204
 205         torture_assert_ntstatus_equal(tctx, status, NT_STATUS_LOGON_FAILURE, "LogonSamLogon failed");
 206
 207         torture_assert(tctx, creds_client_check(creds, &r.out.return_authenticator->cred),
 208                        "Credential chaining failed");
 209
 210         /* This will break message type, check that however we still get NT_STATUS_OK */
 211         for (i=0; i < 256; i++) {
 212                 pac_wrapped_struct.MessageType = i;
 213                 pac_wrapped_struct.ChecksumLength = session_info->server_info->pac_srv_sig.signature.length;
 214                 pac_wrapped_struct.SignatureType = session_info->server_info->pac_kdc_sig.type;
 215                 pac_wrapped_struct.SignatureLength = session_info->server_info->pac_kdc_sig.signature.length;
 216                 pac_wrapped_struct.ChecksumAndSignature = payload
 217                         = data_blob_talloc(tmp_ctx, NULL,
 218                                            pac_wrapped_struct.ChecksumLength
 219                                            + pac_wrapped_struct.SignatureLength);
 220                 memcpy(&payload.data[0],
 221                        session_info->server_info->pac_srv_sig.signature.data,
 222                        pac_wrapped_struct.ChecksumLength);
 223                 memcpy(&payload.data[pac_wrapped_struct.ChecksumLength],
 224                        session_info->server_info->pac_kdc_sig.signature.data,
 225                        pac_wrapped_struct.SignatureLength);
 226
 227                 ndr_err = ndr_push_struct_blob(&pac_wrapped, tmp_ctx, lp_iconv_convenience(tctx->lp_ctx), &pac_wrapped_struct,
 228                                                (ndr_push_flags_fn_t)ndr_push_PAC_Validate);
 229                 torture_assert(tctx, NDR_ERR_CODE_IS_SUCCESS(ndr_err), "ndr_push_struct_blob of PACValidate structure failed");
 230
 231                 torture_assert(tctx, (creds->negotiate_flags & NETLOGON_NEG_ARCFOUR), "not willing to even try a PACValidate without RC4 encryption");
 232                 creds_arcfour_crypt(creds, pac_wrapped.data, pac_wrapped.length);
 233
 234                 generic.length = pac_wrapped.length;
 235                 generic.data = pac_wrapped.data;
 236
 237                 ZERO_STRUCT(auth2);
 238                 creds_client_authenticator(creds, &auth);
 239                 r.in.credential = &auth;
 240                 r.in.return_authenticator = &auth2;
 241                 r.in.logon_level = NetlogonGenericInformation;
 242                 r.in.logon.generic = &generic;
 243                 r.in.server_name = talloc_asprintf(tctx, "\\\\%s", dcerpc_server_name(p));
 244                 r.in.computer_name = cli_credentials_get_workstation(credentials);
 245                 r.in.validation_level = NetlogonValidationGenericInfo2;
 246
 247                 status = dcerpc_netr_LogonSamLogon(p, tctx, &r);
 248
 249                 torture_assert_ntstatus_ok(tctx, status, "LogonSamLogon failed");
 250
 251                 torture_assert(tctx, creds_client_check(creds, &r.out.return_authenticator->cred),
 252                                "Credential chaining failed");
 253         }
 254
 255         /* This will break the parsing nicely (even in the crypto wrapping), check we get INVALID_PARAMETER */
 256         generic.length--;
 257
 258         ZERO_STRUCT(auth2);
 259         creds_client_authenticator(creds, &auth);
 260         r.in.credential = &auth;
 261         r.in.return_authenticator = &auth2;
 262         r.in.logon_level = NetlogonGenericInformation;
 263         r.in.logon.generic = &generic;
 264         r.in.server_name = talloc_asprintf(tctx, "\\\\%s", dcerpc_server_name(p));
 265         r.in.computer_name = cli_credentials_get_workstation(credentials);
 266         r.in.validation_level = NetlogonValidationGenericInfo2;
 267
 268         status = dcerpc_netr_LogonSamLogon(p, tctx, &r);
 269
 270         torture_assert_ntstatus_equal(tctx, status, NT_STATUS_INVALID_PARAMETER, "LogonSamLogon failed");
 271
 272         torture_assert(tctx, creds_client_check(creds, &r.out.return_authenticator->cred),
 273                        "Credential chaining failed");
 274
 275         pac_wrapped_struct.MessageType = 0x3;
 276         pac_wrapped_struct.ChecksumLength = session_info->server_info->pac_srv_sig.signature.length;
 277         pac_wrapped_struct.SignatureType = session_info->server_info->pac_kdc_sig.type;
 278
 279         /* Break the SignatureType */
 280         pac_wrapped_struct.SignatureType++;
 281
 282         pac_wrapped_struct.SignatureLength = session_info->server_info->pac_kdc_sig.signature.length;
 283         pac_wrapped_struct.ChecksumAndSignature = payload
 284                 = data_blob_talloc(tmp_ctx, NULL,
 285                                    pac_wrapped_struct.ChecksumLength
 286                                    + pac_wrapped_struct.SignatureLength);
 287         memcpy(&payload.data[0],
 288                session_info->server_info->pac_srv_sig.signature.data,
 289                pac_wrapped_struct.ChecksumLength);
 290         memcpy(&payload.data[pac_wrapped_struct.ChecksumLength],
 291                session_info->server_info->pac_kdc_sig.signature.data,
 292                pac_wrapped_struct.SignatureLength);
 293
 294         ndr_err = ndr_push_struct_blob(&pac_wrapped, tmp_ctx, lp_iconv_convenience(tctx->lp_ctx), &pac_wrapped_struct,
 295                                        (ndr_push_flags_fn_t)ndr_push_PAC_Validate);
 296         torture_assert(tctx, NDR_ERR_CODE_IS_SUCCESS(ndr_err), "ndr_push_struct_blob of PACValidate structure failed");
 297
 298         torture_assert(tctx, (creds->negotiate_flags & NETLOGON_NEG_ARCFOUR), "not willing to even try a PACValidate without RC4 encryption");
 299         creds_arcfour_crypt(creds, pac_wrapped.data, pac_wrapped.length);
 300
 301         generic.length = pac_wrapped.length;
 302         generic.data = pac_wrapped.data;
 303
 304         ZERO_STRUCT(auth2);
 305         creds_client_authenticator(creds, &auth);
 306         r.in.credential = &auth;
 307         r.in.return_authenticator = &auth2;
 308         r.in.logon_level = NetlogonGenericInformation;
 309         r.in.logon.generic = &generic;
 310         r.in.server_name = talloc_asprintf(tctx, "\\\\%s", dcerpc_server_name(p));
 311         r.in.computer_name = cli_credentials_get_workstation(credentials);
 312         r.in.validation_level = NetlogonValidationGenericInfo2;
 313
 314         status = dcerpc_netr_LogonSamLogon(p, tctx, &r);
 315
 316         torture_assert_ntstatus_equal(tctx, status, NT_STATUS_LOGON_FAILURE, "LogonSamLogon failed");
 317
 318         torture_assert(tctx, creds_client_check(creds, &r.out.return_authenticator->cred),
 319                        "Credential chaining failed");
 320
 321
 322         pac_wrapped_struct.MessageType = 0x3;
 323         pac_wrapped_struct.ChecksumLength = session_info->server_info->pac_srv_sig.signature.length;
 324         pac_wrapped_struct.SignatureType = session_info->server_info->pac_kdc_sig.type;
 325         pac_wrapped_struct.SignatureLength = session_info->server_info->pac_kdc_sig.signature.length;
 326
 327         pac_wrapped_struct.ChecksumAndSignature = payload
 328                 = data_blob_talloc(tmp_ctx, NULL,
 329                                    pac_wrapped_struct.ChecksumLength
 330                                    + pac_wrapped_struct.SignatureLength);
 331         memcpy(&payload.data[0],
 332                session_info->server_info->pac_srv_sig.signature.data,
 333                pac_wrapped_struct.ChecksumLength);
 334         memcpy(&payload.data[pac_wrapped_struct.ChecksumLength],
 335                session_info->server_info->pac_kdc_sig.signature.data,
 336                pac_wrapped_struct.SignatureLength);
 337
 338         /* Break the signature length */
 339         pac_wrapped_struct.SignatureLength++;
 340
 341         ndr_err = ndr_push_struct_blob(&pac_wrapped, tmp_ctx, lp_iconv_convenience(tctx->lp_ctx), &pac_wrapped_struct,
 342                                        (ndr_push_flags_fn_t)ndr_push_PAC_Validate);
 343         torture_assert(tctx, NDR_ERR_CODE_IS_SUCCESS(ndr_err), "ndr_push_struct_blob of PACValidate structure failed");
 344
 345         torture_assert(tctx, (creds->negotiate_flags & NETLOGON_NEG_ARCFOUR), "not willing to even try a PACValidate without RC4 encryption");
 346         creds_arcfour_crypt(creds, pac_wrapped.data, pac_wrapped.length);
 347
 348         generic.length = pac_wrapped.length;
 349         generic.data = pac_wrapped.data;
 350
 351         ZERO_STRUCT(auth2);
 352         creds_client_authenticator(creds, &auth);
 353         r.in.credential = &auth;
 354         r.in.return_authenticator = &auth2;
 355         r.in.logon_level = NetlogonGenericInformation;
 356         r.in.logon.generic = &generic;
 357         r.in.server_name = talloc_asprintf(tctx, "\\\\%s", dcerpc_server_name(p));
 358         r.in.computer_name = cli_credentials_get_workstation(credentials);
 359         r.in.validation_level = NetlogonValidationGenericInfo2;
 360
 361         status = dcerpc_netr_LogonSamLogon(p, tctx, &r);
 362
 363         torture_assert_ntstatus_equal(tctx, status, NT_STATUS_INVALID_PARAMETER, "LogonSamLogon failed");
 364
 365         torture_assert(tctx, creds_client_check(creds, &r.out.return_authenticator->cred),
 366                        "Credential chaining failed");
 367         return true;
 368 }
 369
 370 struct torture_suite *torture_rpc_remote_pac(TALLOC_CTX *mem_ctx)
 371 {
 372         struct torture_suite *suite = torture_suite_create(mem_ctx, "PAC");
 373         struct torture_rpc_tcase *tcase;
 374
 375         tcase = torture_suite_add_machine_rpc_iface_tcase(suite, "netlogon",
 376                                                   &ndr_table_netlogon, TEST_MACHINE_NAME);
 377         torture_rpc_tcase_add_test_creds(tcase, "verify", test_PACVerify);
 378
 379         return suite;
 380 }