It turns out that the Netlogon PAC verification is encrypted.
[kai/samba.git] / 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.MessageType = 0x3;
139         pac_wrapped_struct.ChecksumLength = session_info->server_info->pac_srv_sig.signature.length;
140         pac_wrapped_struct.SignatureType = session_info->server_info->pac_kdc_sig.type;
141         pac_wrapped_struct.SignatureLength = session_info->server_info->pac_kdc_sig.signature.length;
142         pac_wrapped_struct.ChecksumAndSignature = payload
143                 = data_blob_talloc(tmp_ctx, NULL, 
144                                    pac_wrapped_struct.ChecksumLength
145                                    + pac_wrapped_struct.SignatureLength);
146         memcpy(&payload.data[0], 
147                session_info->server_info->pac_srv_sig.signature.data, 
148                pac_wrapped_struct.ChecksumLength);
149         memcpy(&payload.data[pac_wrapped_struct.ChecksumLength], 
150                session_info->server_info->pac_kdc_sig.signature.data, 
151                pac_wrapped_struct.SignatureLength);
152
153         ndr_err = ndr_push_struct_blob(&pac_wrapped, tmp_ctx, lp_iconv_convenience(tctx->lp_ctx), &pac_wrapped_struct,
154                                        (ndr_push_flags_fn_t)ndr_push_PAC_Validate);
155         torture_assert(tctx, NDR_ERR_CODE_IS_SUCCESS(ndr_err), "ndr_push_struct_blob of PACValidate structure failed");
156                 
157         torture_assert(tctx, (creds->negotiate_flags & NETLOGON_NEG_ARCFOUR), "not willing to even try a PACValidate without RC4 encryption");
158         creds_arcfour_crypt(creds, pac_wrapped.data, pac_wrapped.length);
159
160         /* Validate it over the netlogon pipe */
161
162         generic.identity_info.parameter_control = 0;
163         generic.identity_info.logon_id_high = 0;
164         generic.identity_info.logon_id_low = 0;
165         generic.identity_info.domain_name.string = session_info->server_info->domain_name;
166         generic.identity_info.account_name.string = session_info->server_info->account_name;
167         generic.identity_info.workstation.string = TEST_MACHINE_NAME;
168
169         generic.package_name.string = "Kerberos";
170         generic.length = pac_wrapped.length;
171         generic.data = pac_wrapped.data;
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         torture_assert(tctx, creds_client_check(creds, &r.out.return_authenticator->cred), 
188                        "Credential chaining failed");
189
190         return true;
191 }
192
193 struct torture_suite *torture_rpc_remote_pac(TALLOC_CTX *mem_ctx)
194 {
195         struct torture_suite *suite = torture_suite_create(mem_ctx, "PAC");
196         struct torture_rpc_tcase *tcase;
197
198         tcase = torture_suite_add_machine_rpc_iface_tcase(suite, "netlogon", 
199                                                   &ndr_table_netlogon, TEST_MACHINE_NAME);
200         torture_rpc_tcase_add_test_creds(tcase, "verify", test_PACVerify);
201
202         return suite;
203 }