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