2 Unix SMB/CIFS implementation.
4 Winbind authentication mechnism
6 Copyright (C) Tim Potter 2000
7 Copyright (C) Andrew Bartlett 2001 - 2002
8 Copyright (C) Stefan Metzmacher 2005
10 This program is free software; you can redistribute it and/or modify
11 it under the terms of the GNU General Public License as published by
12 the Free Software Foundation; either version 3 of the License, or
13 (at your option) any later version.
15 This program is distributed in the hope that it will be useful,
16 but WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 GNU General Public License for more details.
20 You should have received a copy of the GNU General Public License
21 along with this program. If not, see <http://www.gnu.org/licenses/>.
25 #include "auth/auth.h"
26 #include "nsswitch/winbind_client.h"
27 #include "librpc/gen_ndr/ndr_netlogon.h"
28 #include "librpc/gen_ndr/ndr_winbind.h"
29 #include "lib/messaging/irpc.h"
30 #include "param/param.h"
32 static NTSTATUS get_info3_from_ndr(TALLOC_CTX *mem_ctx, struct winbindd_response *response, struct netr_SamInfo3 *info3)
34 size_t len = response->length - sizeof(struct winbindd_response);
36 enum ndr_err_code ndr_err;
38 blob.length = len - 4;
39 blob.data = (uint8_t *)(((char *)response->extra_data.data) + 4);
41 ndr_err = ndr_pull_struct_blob(&blob, mem_ctx,
42 lp_iconv_convenience(global_loadparm), info3,
43 (ndr_pull_flags_fn_t)ndr_pull_netr_SamInfo3);
44 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
45 return ndr_map_error2ntstatus(ndr_err);
50 DEBUG(2, ("get_info3_from_ndr: No info3 struct found!\n"));
51 return NT_STATUS_UNSUCCESSFUL;
55 static NTSTATUS winbind_want_check(struct auth_method_context *ctx,
57 const struct auth_usersupplied_info *user_info)
59 if (!user_info->mapped.account_name || !*user_info->mapped.account_name) {
60 return NT_STATUS_NOT_IMPLEMENTED;
63 /* TODO: maybe limit the user scope to remote users only */
68 Authenticate a user with a challenge/response
69 using the samba3 winbind protocol
71 static NTSTATUS winbind_check_password_samba3(struct auth_method_context *ctx,
73 const struct auth_usersupplied_info *user_info,
74 struct auth_serversupplied_info **server_info)
76 struct winbindd_request request;
77 struct winbindd_response response;
80 struct netr_SamInfo3 info3;
82 /* Send off request */
83 const struct auth_usersupplied_info *user_info_temp;
84 nt_status = encrypt_user_info(mem_ctx, ctx->auth_ctx,
85 AUTH_PASSWORD_RESPONSE,
86 user_info, &user_info_temp);
87 if (!NT_STATUS_IS_OK(nt_status)) {
90 user_info = user_info_temp;
93 ZERO_STRUCT(response);
94 request.flags = WBFLAG_PAM_INFO3_NDR;
96 request.data.auth_crap.logon_parameters = user_info->logon_parameters;
98 safe_strcpy(request.data.auth_crap.user,
99 user_info->client.account_name, sizeof(fstring));
100 safe_strcpy(request.data.auth_crap.domain,
101 user_info->client.domain_name, sizeof(fstring));
102 safe_strcpy(request.data.auth_crap.workstation,
103 user_info->workstation_name, sizeof(fstring));
105 memcpy(request.data.auth_crap.chal, ctx->auth_ctx->challenge.data.data, sizeof(request.data.auth_crap.chal));
107 request.data.auth_crap.lm_resp_len = MIN(user_info->password.response.lanman.length,
108 sizeof(request.data.auth_crap.lm_resp));
109 request.data.auth_crap.nt_resp_len = MIN(user_info->password.response.nt.length,
110 sizeof(request.data.auth_crap.nt_resp));
112 memcpy(request.data.auth_crap.lm_resp, user_info->password.response.lanman.data,
113 request.data.auth_crap.lm_resp_len);
114 memcpy(request.data.auth_crap.nt_resp, user_info->password.response.nt.data,
115 request.data.auth_crap.nt_resp_len);
117 result = winbindd_request_response(WINBINDD_PAM_AUTH_CRAP, &request, &response);
119 nt_status = NT_STATUS(response.data.auth.nt_status);
120 NT_STATUS_NOT_OK_RETURN(nt_status);
122 if (result == NSS_STATUS_SUCCESS && response.extra_data.data) {
123 union netr_Validation validation;
125 nt_status = get_info3_from_ndr(mem_ctx, &response, &info3);
126 SAFE_FREE(response.extra_data.data);
127 NT_STATUS_NOT_OK_RETURN(nt_status);
129 validation.sam3 = &info3;
130 nt_status = make_server_info_netlogon_validation(mem_ctx,
131 user_info->client.account_name,
135 } else if (result == NSS_STATUS_SUCCESS && !response.extra_data.data) {
136 DEBUG(0, ("Winbindd authenticated the user [%s]\\[%s], "
137 "but did not include the required info3 reply!\n",
138 user_info->client.domain_name, user_info->client.account_name));
139 return NT_STATUS_INSUFFICIENT_LOGON_INFO;
140 } else if (NT_STATUS_IS_OK(nt_status)) {
141 DEBUG(1, ("Winbindd authentication for [%s]\\[%s] failed, "
142 "but no error code is available!\n",
143 user_info->client.domain_name, user_info->client.account_name));
144 return NT_STATUS_NO_LOGON_SERVERS;
150 struct winbind_check_password_state {
151 struct winbind_SamLogon req;
155 Authenticate a user with a challenge/response
156 using IRPC to the winbind task
158 static NTSTATUS winbind_check_password(struct auth_method_context *ctx,
160 const struct auth_usersupplied_info *user_info,
161 struct auth_serversupplied_info **server_info)
164 struct server_id *winbind_servers;
165 struct winbind_check_password_state *s;
166 const struct auth_usersupplied_info *user_info_new;
167 struct netr_IdentityInfo *identity_info;
169 s = talloc(mem_ctx, struct winbind_check_password_state);
170 NT_STATUS_HAVE_NO_MEMORY(s);
172 winbind_servers = irpc_servers_byname(ctx->auth_ctx->msg_ctx, s, "winbind_server");
173 if ((winbind_servers == NULL) || (winbind_servers[0].id == 0)) {
174 DEBUG(0, ("Winbind authentication for [%s]\\[%s] failed, "
175 "no winbind_server running!\n",
176 user_info->client.domain_name, user_info->client.account_name));
177 return NT_STATUS_NO_LOGON_SERVERS;
180 if (user_info->flags & USER_INFO_INTERACTIVE_LOGON) {
181 struct netr_PasswordInfo *password_info;
183 status = encrypt_user_info(s, ctx->auth_ctx, AUTH_PASSWORD_HASH,
184 user_info, &user_info_new);
185 NT_STATUS_NOT_OK_RETURN(status);
186 user_info = user_info_new;
188 password_info = talloc(s, struct netr_PasswordInfo);
189 NT_STATUS_HAVE_NO_MEMORY(password_info);
191 password_info->lmpassword = *user_info->password.hash.lanman;
192 password_info->ntpassword = *user_info->password.hash.nt;
194 identity_info = &password_info->identity_info;
195 s->req.in.logon_level = 1;
196 s->req.in.logon.password= password_info;
198 struct netr_NetworkInfo *network_info;
199 const uint8_t *challenge;
201 status = encrypt_user_info(s, ctx->auth_ctx, AUTH_PASSWORD_RESPONSE,
202 user_info, &user_info_new);
203 NT_STATUS_NOT_OK_RETURN(status);
204 user_info = user_info_new;
206 network_info = talloc(s, struct netr_NetworkInfo);
207 NT_STATUS_HAVE_NO_MEMORY(network_info);
209 status = auth_get_challenge(ctx->auth_ctx, &challenge);
210 NT_STATUS_NOT_OK_RETURN(status);
212 memcpy(network_info->challenge, challenge, sizeof(network_info->challenge));
214 network_info->nt.length = user_info->password.response.nt.length;
215 network_info->nt.data = user_info->password.response.nt.data;
217 network_info->lm.length = user_info->password.response.lanman.length;
218 network_info->lm.data = user_info->password.response.lanman.data;
220 identity_info = &network_info->identity_info;
221 s->req.in.logon_level = 2;
222 s->req.in.logon.network = network_info;
225 identity_info->domain_name.string = user_info->client.domain_name;
226 identity_info->parameter_control = user_info->logon_parameters; /* see MSV1_0_* */
227 identity_info->logon_id_low = 0;
228 identity_info->logon_id_high = 0;
229 identity_info->account_name.string = user_info->client.account_name;
230 identity_info->workstation.string = user_info->workstation_name;
232 s->req.in.validation_level = 3;
234 status = IRPC_CALL(ctx->auth_ctx->msg_ctx, winbind_servers[0],
235 winbind, WINBIND_SAMLOGON,
237 NT_STATUS_NOT_OK_RETURN(status);
239 status = make_server_info_netlogon_validation(mem_ctx,
240 user_info->client.account_name,
241 s->req.in.validation_level,
242 &s->req.out.validation,
244 NT_STATUS_NOT_OK_RETURN(status);
249 static const struct auth_operations winbind_samba3_ops = {
250 .name = "winbind_samba3",
251 .get_challenge = auth_get_challenge_not_implemented,
252 .want_check = winbind_want_check,
253 .check_password = winbind_check_password_samba3
256 static const struct auth_operations winbind_ops = {
258 .get_challenge = auth_get_challenge_not_implemented,
259 .want_check = winbind_want_check,
260 .check_password = winbind_check_password
263 NTSTATUS auth_winbind_init(void)
267 ret = auth_register(&winbind_samba3_ops);
268 if (!NT_STATUS_IS_OK(ret)) {
269 DEBUG(0,("Failed to register 'winbind_samba3' auth backend!\n"));
273 ret = auth_register(&winbind_ops);
274 if (!NT_STATUS_IS_OK(ret)) {
275 DEBUG(0,("Failed to register 'winbind' auth backend!\n"));