2 Unix SMB/Netbios implementation.
5 Winbind daemon - pam auuth funcions
7 Copyright (C) Andrew Tridgell 2000
8 Copyright (C) Tim Potter 2001
9 Copyright (C) Andrew Bartlett 2001
11 This program is free software; you can redistribute it and/or modify
12 it under the terms of the GNU General Public License as published by
13 the Free Software Foundation; either version 2 of the License, or
14 (at your option) any later version.
16 This program is distributed in the hope that it will be useful,
17 but WITHOUT ANY WARRANTY; without even the implied warranty of
18 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 GNU General Public License for more details.
21 You should have received a copy of the GNU General Public License
22 along with this program; if not, write to the Free Software
23 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
28 extern pstring global_myname;
30 /* Copy of parse_domain_user from winbindd_util.c. Parse a string of the
31 form DOMAIN/user into a domain and a user */
33 static void parse_domain_user(char *domuser, fstring domain, fstring user)
36 char *sep = lp_winbind_separator();
38 p = strchr(domuser,*sep);
39 if (!p) p = strchr(domuser,'\\');
42 fstrcpy(user, domuser);
47 fstrcpy(domain, domuser);
48 domain[PTR_DIFF(p, domuser)] = 0;
52 /* Return a password structure from a username. Specify whether cached data
55 enum winbindd_result winbindd_pam_auth(struct winbindd_cli_state *state)
58 fstring name_domain, name_user;
60 unsigned char trust_passwd[16];
61 time_t last_change_time;
63 unsigned char local_lm_response[24];
64 unsigned char local_nt_response[24];
66 auth_usersupplied_info user_info;
67 auth_serversupplied_info server_info;
68 AUTH_STR theirdomain, smb_username, wksta_name;
70 DEBUG(3, ("[%5d]: pam auth %s\n", state->pid,
71 state->request.data.auth.user));
73 /* Parse domain and username */
75 parse_domain_user(state->request.data.auth.user, name_domain,
78 /* don't allow the null domain */
80 if (strcmp(name_domain,"") == 0)
81 return WINBINDD_ERROR;
83 passlen = strlen(state->request.data.auth.pass);
85 ZERO_STRUCT(user_info);
86 ZERO_STRUCT(theirdomain);
87 ZERO_STRUCT(smb_username);
88 ZERO_STRUCT(wksta_name);
90 theirdomain.str = name_domain;
91 theirdomain.len = strlen(theirdomain.str);
93 user_info.requested_domain = theirdomain;
94 user_info.domain = theirdomain;
96 user_info.smb_username.str = name_user;
97 user_info.smb_username.len = strlen(name_user);
99 user_info.requested_username.str = name_user;
100 user_info.requested_username.len = strlen(name_user);
102 user_info.wksta_name.str = global_myname;
103 user_info.wksta_name.len = strlen(user_info.wksta_name.str);
105 user_info.wksta_name = wksta_name;
107 generate_random_buffer( user_info.chal, 8, False);
109 if (state->request.data.auth.pass[0]) {
110 SMBencrypt((uchar *)state->request.data.auth.pass, user_info.chal, local_lm_response);
111 user_info.lm_resp.buffer = (uint8 *)local_lm_response;
112 user_info.lm_resp.len = 24;
113 SMBNTencrypt((uchar *)state->request.data.auth.pass, user_info.chal, local_nt_response);
114 user_info.nt_resp.buffer = (uint8 *)local_nt_response;
115 user_info.nt_resp.len = 24;
117 return WINBINDD_ERROR;
121 * Get the machine account password for our primary domain
124 if (!secrets_fetch_trust_account_password(lp_workgroup(), trust_passwd, &last_change_time))
126 DEBUG(0, ("winbindd_pam_auth: could not fetch trust account password for domain %s\n", lp_workgroup()));
127 return WINBINDD_ERROR;
130 /* So domain_client_validate() actually opens a new connection
131 for each authentication performed. This can theoretically
132 be optimised to use an already open IPC$ connection. */
134 result = domain_client_validate(&user_info, &server_info,
135 server_state.controller, trust_passwd,
138 return (result == NT_STATUS_OK) ? WINBINDD_OK : WINBINDD_ERROR;
141 /* Challenge Response Authentication Protocol */
143 enum winbindd_result winbindd_pam_auth_crap(struct winbindd_cli_state *state)
146 fstring name_domain, name_user;
147 unsigned char trust_passwd[16];
148 time_t last_change_time;
149 auth_usersupplied_info user_info;
150 auth_serversupplied_info server_info;
151 AUTH_STR theirdomain, smb_username, wksta_name;
153 DEBUG(3, ("[%5d]: pam auth crap %s\n", state->pid,
154 state->request.data.auth_crap.user));
156 /* Parse domain and username */
158 parse_domain_user(state->request.data.auth_crap.user, name_domain,
161 ZERO_STRUCT(user_info);
162 ZERO_STRUCT(theirdomain);
163 ZERO_STRUCT(smb_username);
164 ZERO_STRUCT(wksta_name);
166 theirdomain.str = name_domain;
167 theirdomain.len = strlen(theirdomain.str);
169 user_info.requested_domain = theirdomain;
170 user_info.domain = theirdomain;
172 user_info.smb_username.str = name_user;
173 user_info.smb_username.len = strlen(name_user);
175 user_info.requested_username.str = name_user;
176 user_info.requested_username.len = strlen(name_user);
178 user_info.wksta_name.str = global_myname;
179 user_info.wksta_name.len = strlen(user_info.wksta_name.str);
181 user_info.wksta_name = wksta_name;
183 memcpy(user_info.chal, state->request.data.auth_crap.chal, 8);
185 user_info.lm_resp.buffer = state->request.data.auth_crap.lm_resp;
186 user_info.nt_resp.buffer = state->request.data.auth_crap.nt_resp;
188 user_info.lm_resp.len = 24;
189 user_info.nt_resp.len = 24;
192 * Get the machine account password for our primary domain
195 if (!secrets_fetch_trust_account_password(lp_workgroup(), trust_passwd, &last_change_time))
197 DEBUG(0, ("winbindd_pam_auth: could not fetch trust account password for domain %s\n", lp_workgroup()));
198 return WINBINDD_ERROR;
201 /* So domain_client_validate() actually opens a new connection
202 for each authentication performed. This can theoretically
203 be optimised to use an already open IPC$ connection. */
205 result = domain_client_validate(&user_info, &server_info,
206 server_state.controller, trust_passwd,
209 return (result == NT_STATUS_OK) ? WINBINDD_OK : WINBINDD_ERROR;
212 /* Change a user password */
214 enum winbindd_result winbindd_pam_chauthtok(struct winbindd_cli_state *state)
216 char *oldpass, *newpass;
217 fstring domain, user;
218 uchar nt_oldhash[16];
219 uchar lm_oldhash[16];
221 DEBUG(3, ("[%5d]: pam chauthtok %s\n", state->pid,
222 state->request.data.chauthtok.user));
226 if (state == NULL) return WINBINDD_ERROR;
228 parse_domain_user(state->request.data.chauthtok.user, domain, user);
230 oldpass = state->request.data.chauthtok.oldpass;
231 newpass = state->request.data.chauthtok.newpass;
233 nt_lm_owf_gen(oldpass, nt_oldhash, lm_oldhash);
235 /* Change password */
241 if (!msrpc_sam_ntchange_pwd(server_state.controller, domain, user,
242 lm_oldhash, nt_oldhash, newpass)) {
243 DEBUG(0, ("password change failed for user %s/%s\n", domain, user));
244 return WINBINDD_ERROR;