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         union netr_LogonLevel logon;
  52         union netr_Validation validation;
  53         uint8_t authoritative;
  54         struct netr_Authenticator return_authenticator;
  55
  56         struct netr_GenericInfo generic;
  57         struct netr_Authenticator auth, auth2;
  58
  59
  60         struct creds_CredentialState *creds;
  61         struct gensec_security *gensec_client_context;
  62         struct gensec_security *gensec_server_context;
  63
  64         struct messaging_context *msg_server_ctx;
  65         DATA_BLOB client_to_server, server_to_client, pac_wrapped, payload;
  66         struct PAC_Validate pac_wrapped_struct;
  67
  68         enum ndr_err_code ndr_err;
  69
  70         struct auth_session_info *session_info;
  71
  72         char *tmp_dir;
  73
  74         TALLOC_CTX *tmp_ctx = talloc_new(tctx);
  75
  76         torture_assert(tctx, tmp_ctx != NULL, "talloc_new() failed");
  77
  78         if (!test_SetupCredentials2(p, tctx, NETLOGON_NEG_AUTH2_ADS_FLAGS,
  79                                     credentials, SEC_CHAN_BDC,
  80                                     &creds)) {
  81                 return false;
  82         }
  83
  84         status = torture_temp_dir(tctx, "PACVerify", &tmp_dir);
  85         torture_assert_ntstatus_ok(tctx, status, "torture_temp_dir failed");
  86
  87         msg_server_ctx = messaging_init(tctx,
  88                                         tmp_dir,
  89                                         cluster_id(0, 1),
  90                                         lp_iconv_convenience(tctx->lp_ctx),
  91                                         tctx->ev);
  92
  93         torture_assert(tctx, msg_server_ctx != NULL, "Failed to init messaging context");
  94
  95         status = gensec_client_start(tctx, &gensec_client_context, tctx->ev,
  96                                      lp_gensec_settings(tctx, tctx->lp_ctx));
  97         torture_assert_ntstatus_ok(tctx, status, "gensec_client_start (client) failed");
  98
  99         status = gensec_set_target_hostname(gensec_client_context, TEST_MACHINE_NAME);
 100
 101         status = gensec_set_credentials(gensec_client_context, cmdline_credentials);
 102         torture_assert_ntstatus_ok(tctx, status, "gensec_set_credentials (client) failed");
 103
 104         status = gensec_start_mech_by_sasl_name(gensec_client_context, "GSSAPI");
 105         torture_assert_ntstatus_ok(tctx, status, "gensec_start_mech_by_sasl_name (client) failed");
 106
 107         status = gensec_server_start(tctx, tctx->ev,
 108                                      lp_gensec_settings(tctx, tctx->lp_ctx),
 109                                      NULL, &gensec_server_context);
 110         torture_assert_ntstatus_ok(tctx, status, "gensec_server_start (server) failed");
 111
 112         status = gensec_set_credentials(gensec_server_context, credentials);
 113         torture_assert_ntstatus_ok(tctx, status, "gensec_set_credentials (server) failed");
 114
 115         status = gensec_start_mech_by_sasl_name(gensec_server_context, "GSSAPI");
 116         torture_assert_ntstatus_ok(tctx, status, "gensec_start_mech_by_sasl_name (server) failed");
 117
 118         server_to_client = data_blob(NULL, 0);
 119
 120         do {
 121                 /* Do a client-server update dance */
 122                 status = gensec_update(gensec_client_context, tmp_ctx, server_to_client, &client_to_server);
 123                 if (!NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {;
 124                         torture_assert_ntstatus_ok(tctx, status, "gensec_update (client) failed");
 125                 }
 126
 127                 status = gensec_update(gensec_server_context, tmp_ctx, client_to_server, &server_to_client);
 128                 if (!NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {;
 129                         torture_assert_ntstatus_ok(tctx, status, "gensec_update (server) failed");
 130                 }
 131
 132                 if (NT_STATUS_IS_OK(status)) {
 133                         break;
 134                 }
 135         } while (1);
 136
 137         /* Extract the PAC using Samba's code */
 138
 139         status = gensec_session_info(gensec_server_context, &session_info);
 140         torture_assert_ntstatus_ok(tctx, status, "gensec_session_info failed");
 141
 142         pac_wrapped_struct.ChecksumLength = session_info->server_info->pac_srv_sig.signature.length;
 143         pac_wrapped_struct.SignatureType = session_info->server_info->pac_kdc_sig.type;
 144         pac_wrapped_struct.SignatureLength = session_info->server_info->pac_kdc_sig.signature.length;
 145         pac_wrapped_struct.ChecksumAndSignature = payload
 146                 = data_blob_talloc(tmp_ctx, NULL,
 147                                    pac_wrapped_struct.ChecksumLength
 148                                    + pac_wrapped_struct.SignatureLength);
 149         memcpy(&payload.data[0],
 150                session_info->server_info->pac_srv_sig.signature.data,
 151                pac_wrapped_struct.ChecksumLength);
 152         memcpy(&payload.data[pac_wrapped_struct.ChecksumLength],
 153                session_info->server_info->pac_kdc_sig.signature.data,
 154                pac_wrapped_struct.SignatureLength);
 155
 156         ndr_err = ndr_push_struct_blob(&pac_wrapped, tmp_ctx, lp_iconv_convenience(tctx->lp_ctx), &pac_wrapped_struct,
 157                                        (ndr_push_flags_fn_t)ndr_push_PAC_Validate);
 158         torture_assert(tctx, NDR_ERR_CODE_IS_SUCCESS(ndr_err), "ndr_push_struct_blob of PACValidate structure failed");
 159
 160         torture_assert(tctx, (creds->negotiate_flags & NETLOGON_NEG_ARCFOUR), "not willing to even try a PACValidate without RC4 encryption");
 161         creds_arcfour_crypt(creds, pac_wrapped.data, pac_wrapped.length);
 162
 163         generic.length = pac_wrapped.length;
 164         generic.data = pac_wrapped.data;
 165
 166         /* Validate it over the netlogon pipe */
 167
 168         generic.identity_info.parameter_control = 0;
 169         generic.identity_info.logon_id_high = 0;
 170         generic.identity_info.logon_id_low = 0;
 171         generic.identity_info.domain_name.string = session_info->server_info->domain_name;
 172         generic.identity_info.account_name.string = session_info->server_info->account_name;
 173         generic.identity_info.workstation.string = TEST_MACHINE_NAME;
 174
 175         generic.package_name.string = "Kerberos";
 176
 177         logon.generic = &generic;
 178
 179         ZERO_STRUCT(auth2);
 180         creds_client_authenticator(creds, &auth);
 181         r.in.credential = &auth;
 182         r.in.return_authenticator = &auth2;
 183         r.in.logon = &logon;
 184         r.in.logon_level = NetlogonGenericInformation;
 185         r.in.server_name = talloc_asprintf(tctx, "\\\\%s", dcerpc_server_name(p));
 186         r.in.computer_name = cli_credentials_get_workstation(credentials);
 187         r.in.validation_level = NetlogonValidationGenericInfo2;
 188         r.out.validation = &validation;
 189         r.out.authoritative = &authoritative;
 190         r.out.return_authenticator = &return_authenticator;
 191
 192         status = dcerpc_netr_LogonSamLogon(p, tctx, &r);
 193
 194         torture_assert_ntstatus_ok(tctx, status, "LogonSamLogon failed");
 195
 196         /* This will break the signature nicely (even in the crypto wrapping), check we get a logon failure */
 197         generic.data[generic.length-1]++;
 198
 199         logon.generic = &generic;
 200
 201         ZERO_STRUCT(auth2);
 202         creds_client_authenticator(creds, &auth);
 203         r.in.credential = &auth;
 204         r.in.return_authenticator = &auth2;
 205         r.in.logon_level = NetlogonGenericInformation;
 206         r.in.logon = &logon;
 207         r.in.server_name = talloc_asprintf(tctx, "\\\\%s", dcerpc_server_name(p));
 208         r.in.computer_name = cli_credentials_get_workstation(credentials);
 209         r.in.validation_level = NetlogonValidationGenericInfo2;
 210
 211         status = dcerpc_netr_LogonSamLogon(p, tctx, &r);
 212
 213         torture_assert_ntstatus_equal(tctx, status, NT_STATUS_LOGON_FAILURE, "LogonSamLogon failed");
 214
 215         torture_assert(tctx, creds_client_check(creds, &r.out.return_authenticator->cred),
 216                        "Credential chaining failed");
 217
 218         /* This will break the parsing nicely (even in the crypto wrapping), check we get INVALID_PARAMETER */
 219         generic.length--;
 220
 221         logon.generic = &generic;
 222
 223         ZERO_STRUCT(auth2);
 224         creds_client_authenticator(creds, &auth);
 225         r.in.credential = &auth;
 226         r.in.return_authenticator = &auth2;
 227         r.in.logon_level = NetlogonGenericInformation;
 228         r.in.logon = &logon;
 229         r.in.server_name = talloc_asprintf(tctx, "\\\\%s", dcerpc_server_name(p));
 230         r.in.computer_name = cli_credentials_get_workstation(credentials);
 231         r.in.validation_level = NetlogonValidationGenericInfo2;
 232
 233         status = dcerpc_netr_LogonSamLogon(p, tctx, &r);
 234
 235         torture_assert_ntstatus_equal(tctx, status, NT_STATUS_INVALID_PARAMETER, "LogonSamLogon failed");
 236
 237         torture_assert(tctx, creds_client_check(creds, &r.out.return_authenticator->cred),
 238                        "Credential chaining failed");
 239
 240         pac_wrapped_struct.ChecksumLength = session_info->server_info->pac_srv_sig.signature.length;
 241         pac_wrapped_struct.SignatureType = session_info->server_info->pac_kdc_sig.type;
 242
 243         /* Break the SignatureType */
 244         pac_wrapped_struct.SignatureType++;
 245
 246         pac_wrapped_struct.SignatureLength = session_info->server_info->pac_kdc_sig.signature.length;
 247         pac_wrapped_struct.ChecksumAndSignature = payload
 248                 = data_blob_talloc(tmp_ctx, NULL,
 249                                    pac_wrapped_struct.ChecksumLength
 250                                    + pac_wrapped_struct.SignatureLength);
 251         memcpy(&payload.data[0],
 252                session_info->server_info->pac_srv_sig.signature.data,
 253                pac_wrapped_struct.ChecksumLength);
 254         memcpy(&payload.data[pac_wrapped_struct.ChecksumLength],
 255                session_info->server_info->pac_kdc_sig.signature.data,
 256                pac_wrapped_struct.SignatureLength);
 257
 258         ndr_err = ndr_push_struct_blob(&pac_wrapped, tmp_ctx, lp_iconv_convenience(tctx->lp_ctx), &pac_wrapped_struct,
 259                                        (ndr_push_flags_fn_t)ndr_push_PAC_Validate);
 260         torture_assert(tctx, NDR_ERR_CODE_IS_SUCCESS(ndr_err), "ndr_push_struct_blob of PACValidate structure failed");
 261
 262         torture_assert(tctx, (creds->negotiate_flags & NETLOGON_NEG_ARCFOUR), "not willing to even try a PACValidate without RC4 encryption");
 263         creds_arcfour_crypt(creds, pac_wrapped.data, pac_wrapped.length);
 264
 265         generic.length = pac_wrapped.length;
 266         generic.data = pac_wrapped.data;
 267
 268         logon.generic = &generic;
 269
 270         ZERO_STRUCT(auth2);
 271         creds_client_authenticator(creds, &auth);
 272         r.in.credential = &auth;
 273         r.in.return_authenticator = &auth2;
 274         r.in.logon_level = NetlogonGenericInformation;
 275         r.in.logon = &logon;
 276         r.in.server_name = talloc_asprintf(tctx, "\\\\%s", dcerpc_server_name(p));
 277         r.in.computer_name = cli_credentials_get_workstation(credentials);
 278         r.in.validation_level = NetlogonValidationGenericInfo2;
 279
 280         status = dcerpc_netr_LogonSamLogon(p, tctx, &r);
 281
 282         torture_assert_ntstatus_equal(tctx, status, NT_STATUS_LOGON_FAILURE, "LogonSamLogon failed");
 283
 284         torture_assert(tctx, creds_client_check(creds, &r.out.return_authenticator->cred),
 285                        "Credential chaining failed");
 286
 287         pac_wrapped_struct.ChecksumLength = session_info->server_info->pac_srv_sig.signature.length;
 288         pac_wrapped_struct.SignatureType = session_info->server_info->pac_kdc_sig.type;
 289         pac_wrapped_struct.SignatureLength = session_info->server_info->pac_kdc_sig.signature.length;
 290
 291         pac_wrapped_struct.ChecksumAndSignature = payload
 292                 = data_blob_talloc(tmp_ctx, NULL,
 293                                    pac_wrapped_struct.ChecksumLength
 294                                    + pac_wrapped_struct.SignatureLength);
 295         memcpy(&payload.data[0],
 296                session_info->server_info->pac_srv_sig.signature.data,
 297                pac_wrapped_struct.ChecksumLength);
 298         memcpy(&payload.data[pac_wrapped_struct.ChecksumLength],
 299                session_info->server_info->pac_kdc_sig.signature.data,
 300                pac_wrapped_struct.SignatureLength);
 301
 302         /* Break the signature length */
 303         pac_wrapped_struct.SignatureLength++;
 304
 305         ndr_err = ndr_push_struct_blob(&pac_wrapped, tmp_ctx, lp_iconv_convenience(tctx->lp_ctx), &pac_wrapped_struct,
 306                                        (ndr_push_flags_fn_t)ndr_push_PAC_Validate);
 307         torture_assert(tctx, NDR_ERR_CODE_IS_SUCCESS(ndr_err), "ndr_push_struct_blob of PACValidate structure failed");
 308
 309         torture_assert(tctx, (creds->negotiate_flags & NETLOGON_NEG_ARCFOUR), "not willing to even try a PACValidate without RC4 encryption");
 310         creds_arcfour_crypt(creds, pac_wrapped.data, pac_wrapped.length);
 311
 312         generic.length = pac_wrapped.length;
 313         generic.data = pac_wrapped.data;
 314
 315         logon.generic = &generic;
 316
 317         ZERO_STRUCT(auth2);
 318         creds_client_authenticator(creds, &auth);
 319         r.in.credential = &auth;
 320         r.in.return_authenticator = &auth2;
 321         r.in.logon_level = NetlogonGenericInformation;
 322         r.in.logon = &logon;
 323         r.in.server_name = talloc_asprintf(tctx, "\\\\%s", dcerpc_server_name(p));
 324         r.in.computer_name = cli_credentials_get_workstation(credentials);
 325         r.in.validation_level = NetlogonValidationGenericInfo2;
 326
 327         status = dcerpc_netr_LogonSamLogon(p, tctx, &r);
 328
 329         torture_assert_ntstatus_equal(tctx, status, NT_STATUS_INVALID_PARAMETER, "LogonSamLogon failed");
 330
 331         torture_assert(tctx, creds_client_check(creds, &r.out.return_authenticator->cred),
 332                        "Credential chaining failed");
 333         return true;
 334 }
 335
 336 struct torture_suite *torture_rpc_remote_pac(TALLOC_CTX *mem_ctx)
 337 {
 338         struct torture_suite *suite = torture_suite_create(mem_ctx, "PAC");
 339         struct torture_rpc_tcase *tcase;
 340
 341         tcase = torture_suite_add_machine_rpc_iface_tcase(suite, "netlogon",
 342                                                   &ndr_table_netlogon, TEST_MACHINE_NAME);
 343         torture_rpc_tcase_add_test_creds(tcase, "verify", test_PACVerify);
 344
 345         return suite;
 346 }