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 "auth/auth.h"
  24 #include "auth/gensec/gensec.h"
  25 #include "lib/cmdline/popt_common.h"
  26 #include "torture/rpc/torture_rpc.h"
  27 #include "libcli/auth/libcli_auth.h"
  28 #include "librpc/gen_ndr/ndr_netlogon_c.h"
  29 #include "param/param.h"
  30
  31 #define TEST_MACHINE_NAME "torturepactest"
  32
  33 /* Check to see if we can pass the PAC across to the NETLOGON server for validation */
  34
  35 /* Also happens to be a really good one-step verfication of our Kerberos stack */
  36
  37 static bool test_PACVerify(struct torture_context *tctx,
  38                            struct dcerpc_pipe *p,
  39                            struct cli_credentials *credentials)
  40 {
  41         NTSTATUS status;
  42
  43         struct netr_LogonSamLogon r;
  44
  45         union netr_LogonLevel logon;
  46         union netr_Validation validation;
  47         uint8_t authoritative;
  48         struct netr_Authenticator return_authenticator;
  49
  50         struct netr_GenericInfo generic;
  51         struct netr_Authenticator auth, auth2;
  52
  53
  54         struct netlogon_creds_CredentialState *creds;
  55         struct gensec_security *gensec_client_context;
  56         struct gensec_security *gensec_server_context;
  57
  58         DATA_BLOB client_to_server, server_to_client, pac_wrapped, payload;
  59         struct PAC_Validate pac_wrapped_struct;
  60
  61         enum ndr_err_code ndr_err;
  62
  63         struct auth_session_info *session_info;
  64
  65         char *tmp_dir;
  66         struct dcerpc_binding_handle *b = p->binding_handle;
  67
  68         TALLOC_CTX *tmp_ctx = talloc_new(tctx);
  69
  70         torture_assert(tctx, tmp_ctx != NULL, "talloc_new() failed");
  71
  72         if (!test_SetupCredentials2(p, tctx, NETLOGON_NEG_AUTH2_ADS_FLAGS,
  73                                     credentials, SEC_CHAN_BDC,
  74                                     &creds)) {
  75                 return false;
  76         }
  77
  78         status = torture_temp_dir(tctx, "PACVerify", &tmp_dir);
  79         torture_assert_ntstatus_ok(tctx, status, "torture_temp_dir failed");
  80
  81         status = gensec_client_start(tctx, &gensec_client_context, tctx->ev,
  82                                      lp_gensec_settings(tctx, tctx->lp_ctx));
  83         torture_assert_ntstatus_ok(tctx, status, "gensec_client_start (client) failed");
  84
  85         status = gensec_set_target_hostname(gensec_client_context, TEST_MACHINE_NAME);
  86
  87         status = gensec_set_credentials(gensec_client_context, cmdline_credentials);
  88         torture_assert_ntstatus_ok(tctx, status, "gensec_set_credentials (client) failed");
  89
  90         status = gensec_start_mech_by_sasl_name(gensec_client_context, "GSSAPI");
  91         torture_assert_ntstatus_ok(tctx, status, "gensec_start_mech_by_sasl_name (client) failed");
  92
  93         status = gensec_server_start(tctx, tctx->ev,
  94                                      lp_gensec_settings(tctx, tctx->lp_ctx),
  95                                      NULL, &gensec_server_context);
  96         torture_assert_ntstatus_ok(tctx, status, "gensec_server_start (server) failed");
  97
  98         status = gensec_set_credentials(gensec_server_context, credentials);
  99         torture_assert_ntstatus_ok(tctx, status, "gensec_set_credentials (server) failed");
 100
 101         status = gensec_start_mech_by_sasl_name(gensec_server_context, "GSSAPI");
 102         torture_assert_ntstatus_ok(tctx, status, "gensec_start_mech_by_sasl_name (server) failed");
 103
 104         server_to_client = data_blob(NULL, 0);
 105
 106         do {
 107                 /* Do a client-server update dance */
 108                 status = gensec_update(gensec_client_context, tmp_ctx, server_to_client, &client_to_server);
 109                 if (!NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {;
 110                         torture_assert_ntstatus_ok(tctx, status, "gensec_update (client) failed");
 111                 }
 112
 113                 status = gensec_update(gensec_server_context, tmp_ctx, client_to_server, &server_to_client);
 114                 if (!NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {;
 115                         torture_assert_ntstatus_ok(tctx, status, "gensec_update (server) failed");
 116                 }
 117
 118                 if (NT_STATUS_IS_OK(status)) {
 119                         break;
 120                 }
 121         } while (1);
 122
 123         /* Extract the PAC using Samba's code */
 124
 125         status = gensec_session_info(gensec_server_context, &session_info);
 126         torture_assert_ntstatus_ok(tctx, status, "gensec_session_info failed");
 127
 128         pac_wrapped_struct.ChecksumLength = session_info->server_info->pac_srv_sig.signature.length;
 129         pac_wrapped_struct.SignatureType = session_info->server_info->pac_kdc_sig.type;
 130         pac_wrapped_struct.SignatureLength = session_info->server_info->pac_kdc_sig.signature.length;
 131         pac_wrapped_struct.ChecksumAndSignature = payload
 132                 = data_blob_talloc(tmp_ctx, NULL,
 133                                    pac_wrapped_struct.ChecksumLength
 134                                    + pac_wrapped_struct.SignatureLength);
 135         memcpy(&payload.data[0],
 136                session_info->server_info->pac_srv_sig.signature.data,
 137                pac_wrapped_struct.ChecksumLength);
 138         memcpy(&payload.data[pac_wrapped_struct.ChecksumLength],
 139                session_info->server_info->pac_kdc_sig.signature.data,
 140                pac_wrapped_struct.SignatureLength);
 141
 142         ndr_err = ndr_push_struct_blob(&pac_wrapped, tmp_ctx, &pac_wrapped_struct,
 143                                        (ndr_push_flags_fn_t)ndr_push_PAC_Validate);
 144         torture_assert(tctx, NDR_ERR_CODE_IS_SUCCESS(ndr_err), "ndr_push_struct_blob of PACValidate structure failed");
 145
 146         torture_assert(tctx, (creds->negotiate_flags & NETLOGON_NEG_ARCFOUR), "not willing to even try a PACValidate without RC4 encryption");
 147         netlogon_creds_arcfour_crypt(creds, pac_wrapped.data, pac_wrapped.length);
 148
 149         generic.length = pac_wrapped.length;
 150         generic.data = pac_wrapped.data;
 151
 152         /* Validate it over the netlogon pipe */
 153
 154         generic.identity_info.parameter_control = 0;
 155         generic.identity_info.logon_id_high = 0;
 156         generic.identity_info.logon_id_low = 0;
 157         generic.identity_info.domain_name.string = session_info->server_info->domain_name;
 158         generic.identity_info.account_name.string = session_info->server_info->account_name;
 159         generic.identity_info.workstation.string = TEST_MACHINE_NAME;
 160
 161         generic.package_name.string = "Kerberos";
 162
 163         logon.generic = &generic;
 164
 165         ZERO_STRUCT(auth2);
 166         netlogon_creds_client_authenticator(creds, &auth);
 167         r.in.credential = &auth;
 168         r.in.return_authenticator = &auth2;
 169         r.in.logon = &logon;
 170         r.in.logon_level = NetlogonGenericInformation;
 171         r.in.server_name = talloc_asprintf(tctx, "\\\\%s", dcerpc_server_name(p));
 172         r.in.computer_name = cli_credentials_get_workstation(credentials);
 173         r.in.validation_level = NetlogonValidationGenericInfo2;
 174         r.out.validation = &validation;
 175         r.out.authoritative = &authoritative;
 176         r.out.return_authenticator = &return_authenticator;
 177
 178         torture_assert_ntstatus_ok(tctx, dcerpc_netr_LogonSamLogon_r(b, tctx, &r),
 179                 "LogonSamLogon failed");
 180
 181         torture_assert_ntstatus_ok(tctx, r.out.result, "LogonSamLogon failed");
 182
 183         /* This will break the signature nicely (even in the crypto wrapping), check we get a logon failure */
 184         generic.data[generic.length-1]++;
 185
 186         logon.generic = &generic;
 187
 188         ZERO_STRUCT(auth2);
 189         netlogon_creds_client_authenticator(creds, &auth);
 190         r.in.credential = &auth;
 191         r.in.return_authenticator = &auth2;
 192         r.in.logon_level = NetlogonGenericInformation;
 193         r.in.logon = &logon;
 194         r.in.server_name = talloc_asprintf(tctx, "\\\\%s", dcerpc_server_name(p));
 195         r.in.computer_name = cli_credentials_get_workstation(credentials);
 196         r.in.validation_level = NetlogonValidationGenericInfo2;
 197
 198         torture_assert_ntstatus_ok(tctx, dcerpc_netr_LogonSamLogon_r(b, tctx, &r),
 199                 "LogonSamLogon failed");
 200
 201         torture_assert_ntstatus_equal(tctx, r.out.result, NT_STATUS_LOGON_FAILURE, "LogonSamLogon failed");
 202
 203         torture_assert(tctx, netlogon_creds_client_check(creds, &r.out.return_authenticator->cred),
 204                        "Credential chaining failed");
 205
 206         /* This will break the parsing nicely (even in the crypto wrapping), check we get INVALID_PARAMETER */
 207         generic.length--;
 208
 209         logon.generic = &generic;
 210
 211         ZERO_STRUCT(auth2);
 212         netlogon_creds_client_authenticator(creds, &auth);
 213         r.in.credential = &auth;
 214         r.in.return_authenticator = &auth2;
 215         r.in.logon_level = NetlogonGenericInformation;
 216         r.in.logon = &logon;
 217         r.in.server_name = talloc_asprintf(tctx, "\\\\%s", dcerpc_server_name(p));
 218         r.in.computer_name = cli_credentials_get_workstation(credentials);
 219         r.in.validation_level = NetlogonValidationGenericInfo2;
 220
 221         torture_assert_ntstatus_ok(tctx, dcerpc_netr_LogonSamLogon_r(b, tctx, &r),
 222                 "LogonSamLogon failed");
 223
 224         torture_assert_ntstatus_equal(tctx, r.out.result, NT_STATUS_INVALID_PARAMETER, "LogonSamLogon failed");
 225
 226         torture_assert(tctx, netlogon_creds_client_check(creds,
 227                                                          &r.out.return_authenticator->cred),
 228                        "Credential chaining failed");
 229
 230         pac_wrapped_struct.ChecksumLength = session_info->server_info->pac_srv_sig.signature.length;
 231         pac_wrapped_struct.SignatureType = session_info->server_info->pac_kdc_sig.type;
 232
 233         /* Break the SignatureType */
 234         pac_wrapped_struct.SignatureType++;
 235
 236         pac_wrapped_struct.SignatureLength = session_info->server_info->pac_kdc_sig.signature.length;
 237         pac_wrapped_struct.ChecksumAndSignature = payload
 238                 = data_blob_talloc(tmp_ctx, NULL,
 239                                    pac_wrapped_struct.ChecksumLength
 240                                    + pac_wrapped_struct.SignatureLength);
 241         memcpy(&payload.data[0],
 242                session_info->server_info->pac_srv_sig.signature.data,
 243                pac_wrapped_struct.ChecksumLength);
 244         memcpy(&payload.data[pac_wrapped_struct.ChecksumLength],
 245                session_info->server_info->pac_kdc_sig.signature.data,
 246                pac_wrapped_struct.SignatureLength);
 247
 248         ndr_err = ndr_push_struct_blob(&pac_wrapped, tmp_ctx, &pac_wrapped_struct,
 249                                        (ndr_push_flags_fn_t)ndr_push_PAC_Validate);
 250         torture_assert(tctx, NDR_ERR_CODE_IS_SUCCESS(ndr_err), "ndr_push_struct_blob of PACValidate structure failed");
 251
 252         torture_assert(tctx, (creds->negotiate_flags & NETLOGON_NEG_ARCFOUR), "not willing to even try a PACValidate without RC4 encryption");
 253         netlogon_creds_arcfour_crypt(creds, pac_wrapped.data, pac_wrapped.length);
 254
 255         generic.length = pac_wrapped.length;
 256         generic.data = pac_wrapped.data;
 257
 258         logon.generic = &generic;
 259
 260         ZERO_STRUCT(auth2);
 261         netlogon_creds_client_authenticator(creds, &auth);
 262         r.in.credential = &auth;
 263         r.in.return_authenticator = &auth2;
 264         r.in.logon_level = NetlogonGenericInformation;
 265         r.in.logon = &logon;
 266         r.in.server_name = talloc_asprintf(tctx, "\\\\%s", dcerpc_server_name(p));
 267         r.in.computer_name = cli_credentials_get_workstation(credentials);
 268         r.in.validation_level = NetlogonValidationGenericInfo2;
 269
 270         torture_assert_ntstatus_ok(tctx, dcerpc_netr_LogonSamLogon_r(b, tctx, &r),
 271                 "LogonSamLogon failed");
 272
 273         torture_assert_ntstatus_equal(tctx, r.out.result, NT_STATUS_LOGON_FAILURE, "LogonSamLogon failed");
 274
 275         torture_assert(tctx, netlogon_creds_client_check(creds, &r.out.return_authenticator->cred),
 276                        "Credential chaining failed");
 277
 278         pac_wrapped_struct.ChecksumLength = session_info->server_info->pac_srv_sig.signature.length;
 279         pac_wrapped_struct.SignatureType = session_info->server_info->pac_kdc_sig.type;
 280         pac_wrapped_struct.SignatureLength = session_info->server_info->pac_kdc_sig.signature.length;
 281
 282         pac_wrapped_struct.ChecksumAndSignature = payload
 283                 = data_blob_talloc(tmp_ctx, NULL,
 284                                    pac_wrapped_struct.ChecksumLength
 285                                    + pac_wrapped_struct.SignatureLength);
 286         memcpy(&payload.data[0],
 287                session_info->server_info->pac_srv_sig.signature.data,
 288                pac_wrapped_struct.ChecksumLength);
 289         memcpy(&payload.data[pac_wrapped_struct.ChecksumLength],
 290                session_info->server_info->pac_kdc_sig.signature.data,
 291                pac_wrapped_struct.SignatureLength);
 292
 293         /* Break the signature length */
 294         pac_wrapped_struct.SignatureLength++;
 295
 296         ndr_err = ndr_push_struct_blob(&pac_wrapped, tmp_ctx, &pac_wrapped_struct,
 297                                        (ndr_push_flags_fn_t)ndr_push_PAC_Validate);
 298         torture_assert(tctx, NDR_ERR_CODE_IS_SUCCESS(ndr_err), "ndr_push_struct_blob of PACValidate structure failed");
 299
 300         torture_assert(tctx, (creds->negotiate_flags & NETLOGON_NEG_ARCFOUR), "not willing to even try a PACValidate without RC4 encryption");
 301         netlogon_creds_arcfour_crypt(creds, pac_wrapped.data, pac_wrapped.length);
 302
 303         generic.length = pac_wrapped.length;
 304         generic.data = pac_wrapped.data;
 305
 306         logon.generic = &generic;
 307
 308         ZERO_STRUCT(auth2);
 309         netlogon_creds_client_authenticator(creds, &auth);
 310         r.in.credential = &auth;
 311         r.in.return_authenticator = &auth2;
 312         r.in.logon_level = NetlogonGenericInformation;
 313         r.in.logon = &logon;
 314         r.in.server_name = talloc_asprintf(tctx, "\\\\%s", dcerpc_server_name(p));
 315         r.in.computer_name = cli_credentials_get_workstation(credentials);
 316         r.in.validation_level = NetlogonValidationGenericInfo2;
 317
 318         torture_assert_ntstatus_ok(tctx, dcerpc_netr_LogonSamLogon_r(b, tctx, &r),
 319                 "LogonSamLogon failed");
 320
 321         torture_assert_ntstatus_equal(tctx, r.out.result, NT_STATUS_INVALID_PARAMETER, "LogonSamLogon failed");
 322
 323         torture_assert(tctx, netlogon_creds_client_check(creds, &r.out.return_authenticator->cred),
 324                        "Credential chaining failed");
 325         return true;
 326 }
 327
 328 struct torture_suite *torture_rpc_remote_pac(TALLOC_CTX *mem_ctx)
 329 {
 330         struct torture_suite *suite = torture_suite_create(mem_ctx, "PAC");
 331         struct torture_rpc_tcase *tcase;
 332
 333         tcase = torture_suite_add_machine_bdc_rpc_iface_tcase(suite, "netlogon",
 334                                                   &ndr_table_netlogon, TEST_MACHINE_NAME);
 335         torture_rpc_tcase_add_test_creds(tcase, "verify", test_PACVerify);
 336
 337         return suite;
 338 }