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 "auth/ntlm/auth_proto.h"
27 #include "auth/session_proto.h"
28 #include "nsswitch/winbind_client.h"
29 #include "librpc/gen_ndr/ndr_netlogon.h"
30 #include "librpc/gen_ndr/ndr_winbind.h"
31 #include "lib/messaging/irpc.h"
32 #include "param/param.h"
34 static NTSTATUS get_info3_from_ndr(TALLOC_CTX *mem_ctx, struct smb_iconv_convenience *iconv_convenience, struct winbindd_response *response, struct netr_SamInfo3 *info3)
36 size_t len = response->length - sizeof(struct winbindd_response);
38 enum ndr_err_code ndr_err;
40 blob.length = len - 4;
41 blob.data = (uint8_t *)(((char *)response->extra_data.data) + 4);
43 ndr_err = ndr_pull_struct_blob(&blob, mem_ctx,
44 iconv_convenience, info3,
45 (ndr_pull_flags_fn_t)ndr_pull_netr_SamInfo3);
46 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
47 return ndr_map_error2ntstatus(ndr_err);
52 DEBUG(2, ("get_info3_from_ndr: No info3 struct found!\n"));
53 return NT_STATUS_UNSUCCESSFUL;
57 static NTSTATUS winbind_want_check(struct auth_method_context *ctx,
59 const struct auth_usersupplied_info *user_info)
61 if (!user_info->mapped.account_name || !*user_info->mapped.account_name) {
62 return NT_STATUS_NOT_IMPLEMENTED;
65 /* TODO: maybe limit the user scope to remote users only */
70 Authenticate a user with a challenge/response
71 using the samba3 winbind protocol
73 static NTSTATUS winbind_check_password_samba3(struct auth_method_context *ctx,
75 const struct auth_usersupplied_info *user_info,
76 struct auth_serversupplied_info **server_info)
78 struct winbindd_request request;
79 struct winbindd_response response;
82 struct netr_SamInfo3 info3;
84 /* Send off request */
85 const struct auth_usersupplied_info *user_info_temp;
86 nt_status = encrypt_user_info(mem_ctx, ctx->auth_ctx,
87 AUTH_PASSWORD_RESPONSE,
88 user_info, &user_info_temp);
89 if (!NT_STATUS_IS_OK(nt_status)) {
92 user_info = user_info_temp;
95 ZERO_STRUCT(response);
96 request.flags = WBFLAG_PAM_INFO3_NDR;
98 request.data.auth_crap.logon_parameters = user_info->logon_parameters;
100 safe_strcpy(request.data.auth_crap.user,
101 user_info->client.account_name, sizeof(fstring));
102 safe_strcpy(request.data.auth_crap.domain,
103 user_info->client.domain_name, sizeof(fstring));
104 safe_strcpy(request.data.auth_crap.workstation,
105 user_info->workstation_name, sizeof(fstring));
107 memcpy(request.data.auth_crap.chal, ctx->auth_ctx->challenge.data.data, sizeof(request.data.auth_crap.chal));
109 request.data.auth_crap.lm_resp_len = MIN(user_info->password.response.lanman.length,
110 sizeof(request.data.auth_crap.lm_resp));
111 request.data.auth_crap.nt_resp_len = MIN(user_info->password.response.nt.length,
112 sizeof(request.data.auth_crap.nt_resp));
114 memcpy(request.data.auth_crap.lm_resp, user_info->password.response.lanman.data,
115 request.data.auth_crap.lm_resp_len);
116 memcpy(request.data.auth_crap.nt_resp, user_info->password.response.nt.data,
117 request.data.auth_crap.nt_resp_len);
119 result = winbindd_request_response(WINBINDD_PAM_AUTH_CRAP, &request, &response);
121 nt_status = NT_STATUS(response.data.auth.nt_status);
122 NT_STATUS_NOT_OK_RETURN(nt_status);
124 if (result == NSS_STATUS_SUCCESS && response.extra_data.data) {
125 union netr_Validation validation;
127 nt_status = get_info3_from_ndr(mem_ctx, lp_iconv_convenience(ctx->auth_ctx->lp_ctx), &response, &info3);
128 SAFE_FREE(response.extra_data.data);
129 NT_STATUS_NOT_OK_RETURN(nt_status);
131 validation.sam3 = &info3;
132 nt_status = make_server_info_netlogon_validation(mem_ctx,
133 user_info->client.account_name,
137 } else if (result == NSS_STATUS_SUCCESS && !response.extra_data.data) {
138 DEBUG(0, ("Winbindd authenticated the user [%s]\\[%s], "
139 "but did not include the required info3 reply!\n",
140 user_info->client.domain_name, user_info->client.account_name));
141 return NT_STATUS_INSUFFICIENT_LOGON_INFO;
142 } else if (NT_STATUS_IS_OK(nt_status)) {
143 DEBUG(1, ("Winbindd authentication for [%s]\\[%s] failed, "
144 "but no error code is available!\n",
145 user_info->client.domain_name, user_info->client.account_name));
146 return NT_STATUS_NO_LOGON_SERVERS;
152 struct winbind_check_password_state {
153 struct winbind_SamLogon req;
157 Authenticate a user with a challenge/response
158 using IRPC to the winbind task
160 static NTSTATUS winbind_check_password(struct auth_method_context *ctx,
162 const struct auth_usersupplied_info *user_info,
163 struct auth_serversupplied_info **server_info)
166 struct server_id *winbind_servers;
167 struct winbind_check_password_state *s;
168 const struct auth_usersupplied_info *user_info_new;
169 struct netr_IdentityInfo *identity_info;
171 s = talloc(mem_ctx, struct winbind_check_password_state);
172 NT_STATUS_HAVE_NO_MEMORY(s);
174 winbind_servers = irpc_servers_byname(ctx->auth_ctx->msg_ctx, s, "winbind_server");
175 if ((winbind_servers == NULL) || (winbind_servers[0].id == 0)) {
176 DEBUG(0, ("Winbind authentication for [%s]\\[%s] failed, "
177 "no winbind_server running!\n",
178 user_info->client.domain_name, user_info->client.account_name));
179 return NT_STATUS_NO_LOGON_SERVERS;
182 if (user_info->flags & USER_INFO_INTERACTIVE_LOGON) {
183 struct netr_PasswordInfo *password_info;
185 status = encrypt_user_info(s, ctx->auth_ctx, AUTH_PASSWORD_HASH,
186 user_info, &user_info_new);
187 NT_STATUS_NOT_OK_RETURN(status);
188 user_info = user_info_new;
190 password_info = talloc(s, struct netr_PasswordInfo);
191 NT_STATUS_HAVE_NO_MEMORY(password_info);
193 password_info->lmpassword = *user_info->password.hash.lanman;
194 password_info->ntpassword = *user_info->password.hash.nt;
196 identity_info = &password_info->identity_info;
197 s->req.in.logon_level = 1;
198 s->req.in.logon.password= password_info;
200 struct netr_NetworkInfo *network_info;
201 const uint8_t *challenge;
203 status = encrypt_user_info(s, ctx->auth_ctx, AUTH_PASSWORD_RESPONSE,
204 user_info, &user_info_new);
205 NT_STATUS_NOT_OK_RETURN(status);
206 user_info = user_info_new;
208 network_info = talloc(s, struct netr_NetworkInfo);
209 NT_STATUS_HAVE_NO_MEMORY(network_info);
211 status = auth_get_challenge(ctx->auth_ctx, &challenge);
212 NT_STATUS_NOT_OK_RETURN(status);
214 memcpy(network_info->challenge, challenge, sizeof(network_info->challenge));
216 network_info->nt.length = user_info->password.response.nt.length;
217 network_info->nt.data = user_info->password.response.nt.data;
219 network_info->lm.length = user_info->password.response.lanman.length;
220 network_info->lm.data = user_info->password.response.lanman.data;
222 identity_info = &network_info->identity_info;
223 s->req.in.logon_level = 2;
224 s->req.in.logon.network = network_info;
227 identity_info->domain_name.string = user_info->client.domain_name;
228 identity_info->parameter_control = user_info->logon_parameters; /* see MSV1_0_* */
229 identity_info->logon_id_low = 0;
230 identity_info->logon_id_high = 0;
231 identity_info->account_name.string = user_info->client.account_name;
232 identity_info->workstation.string = user_info->workstation_name;
234 s->req.in.validation_level = 3;
236 status = IRPC_CALL(ctx->auth_ctx->msg_ctx, winbind_servers[0],
237 winbind, WINBIND_SAMLOGON,
239 NT_STATUS_NOT_OK_RETURN(status);
241 status = make_server_info_netlogon_validation(mem_ctx,
242 user_info->client.account_name,
243 s->req.in.validation_level,
244 &s->req.out.validation,
246 NT_STATUS_NOT_OK_RETURN(status);
251 static const struct auth_operations winbind_samba3_ops = {
252 .name = "winbind_samba3",
253 .get_challenge = auth_get_challenge_not_implemented,
254 .want_check = winbind_want_check,
255 .check_password = winbind_check_password_samba3
258 static const struct auth_operations winbind_ops = {
260 .get_challenge = auth_get_challenge_not_implemented,
261 .want_check = winbind_want_check,
262 .check_password = winbind_check_password
265 _PUBLIC_ NTSTATUS auth_winbind_init(void)
269 ret = auth_register(&winbind_samba3_ops);
270 if (!NT_STATUS_IS_OK(ret)) {
271 DEBUG(0,("Failed to register 'winbind_samba3' auth backend!\n"));
275 ret = auth_register(&winbind_ops);
276 if (!NT_STATUS_IS_OK(ret)) {
277 DEBUG(0,("Failed to register 'winbind' auth backend!\n"));