Line data Source code
1 : /*
2 : Unix SMB/CIFS implementation.
3 : async implementation of WINBINDD_PAM_CHAUTHTOK
4 : Copyright (C) Volker Lendecke 2010
5 :
6 : This program is free software; you can redistribute it and/or modify
7 : it under the terms of the GNU General Public License as published by
8 : the Free Software Foundation; either version 3 of the License, or
9 : (at your option) any later version.
10 :
11 : This program is distributed in the hope that it will be useful,
12 : but WITHOUT ANY WARRANTY; without even the implied warranty of
13 : MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 : GNU General Public License for more details.
15 :
16 : You should have received a copy of the GNU General Public License
17 : along with this program. If not, see <http://www.gnu.org/licenses/>.
18 : */
19 :
20 : #include "includes.h"
21 : #include "winbindd.h"
22 : #include "lib/util/string_wrappers.h"
23 : #include "lib/global_contexts.h"
24 : #include "librpc/gen_ndr/ndr_winbind_c.h"
25 :
26 0 : static void fill_in_password_policy(struct winbindd_response *r,
27 : const struct samr_DomInfo1 *p)
28 : {
29 0 : r->data.auth.policy.min_length_password =
30 0 : p->min_password_length;
31 0 : r->data.auth.policy.password_history =
32 0 : p->password_history_length;
33 0 : r->data.auth.policy.password_properties =
34 0 : p->password_properties;
35 0 : r->data.auth.policy.expire =
36 0 : nt_time_to_unix_abs((const NTTIME *)&(p->max_password_age));
37 0 : r->data.auth.policy.min_passwordage =
38 0 : nt_time_to_unix_abs((const NTTIME *)&(p->min_password_age));
39 0 : }
40 :
41 : struct winbindd_pam_chauthtok_state {
42 : struct wbint_PamAuthChangePassword r;
43 : };
44 :
45 : static void winbindd_pam_chauthtok_done(struct tevent_req *subreq);
46 :
47 14 : struct tevent_req *winbindd_pam_chauthtok_send(
48 : TALLOC_CTX *mem_ctx,
49 : struct tevent_context *ev,
50 : struct winbindd_cli_state *cli,
51 : struct winbindd_request *request)
52 : {
53 0 : struct tevent_req *req, *subreq;
54 0 : struct winbindd_pam_chauthtok_state *state;
55 0 : struct winbindd_domain *contact_domain;
56 14 : char *namespace = NULL;
57 14 : char *domain = NULL;
58 14 : char *user = NULL;
59 14 : char *chauthtok_user = NULL;
60 0 : char *mapped_user;
61 0 : NTSTATUS status;
62 0 : bool ok;
63 :
64 14 : req = tevent_req_create(mem_ctx, &state,
65 : struct winbindd_pam_chauthtok_state);
66 14 : if (req == NULL) {
67 0 : return NULL;
68 : }
69 :
70 : /* Ensure null termination */
71 0 : request->data.chauthtok.user[
72 14 : sizeof(request->data.chauthtok.user)-1]='\0';
73 :
74 14 : DEBUG(3, ("[%5lu]: pam chauthtok %s\n", (unsigned long)cli->pid,
75 : request->data.chauthtok.user));
76 :
77 14 : status = normalize_name_unmap(state, request->data.chauthtok.user,
78 : &mapped_user);
79 :
80 14 : if (NT_STATUS_IS_OK(status) ||
81 14 : NT_STATUS_EQUAL(status, NT_STATUS_FILE_RENAMED)) {
82 0 : fstrcpy(request->data.chauthtok.user, mapped_user);
83 : }
84 :
85 14 : chauthtok_user = request->data.chauthtok.user;
86 14 : ok = canonicalize_username(req,
87 : &chauthtok_user,
88 : &namespace,
89 : &domain,
90 : &user);
91 14 : if (!ok) {
92 0 : DEBUG(10, ("winbindd_pam_chauthtok: canonicalize_username %s "
93 : "failed with\n", request->data.chauthtok.user));
94 0 : tevent_req_nterror(req, NT_STATUS_NO_SUCH_USER);
95 0 : return tevent_req_post(req, ev);
96 : }
97 :
98 14 : fstrcpy(request->data.chauthtok.user, chauthtok_user);
99 :
100 14 : contact_domain = find_domain_from_name(namespace);
101 14 : if (contact_domain == NULL) {
102 0 : DEBUG(3, ("Cannot change password for [%s] -> [%s]\\[%s] "
103 : "as %s is not a trusted domain\n",
104 : request->data.chauthtok.user, domain, user, domain));
105 0 : tevent_req_nterror(req, NT_STATUS_NO_SUCH_USER);
106 0 : return tevent_req_post(req, ev);
107 : }
108 :
109 14 : state->r.in.client_pid = request->pid;
110 14 : state->r.in.flags = request->flags;
111 :
112 14 : state->r.in.client_name = talloc_strdup(state, request->client_name);
113 14 : if (tevent_req_nomem(state->r.in.client_name, req)) {
114 0 : return tevent_req_post(req, ev);
115 : }
116 :
117 14 : state->r.in.user = talloc_strdup(state, request->data.chauthtok.user);
118 14 : if (tevent_req_nomem(state->r.in.user, req)) {
119 0 : return tevent_req_post(req, ev);
120 : }
121 :
122 28 : state->r.in.old_password = talloc_strdup(state,
123 14 : request->data.chauthtok.oldpass);
124 14 : if (tevent_req_nomem(state->r.in.old_password, req)) {
125 0 : return tevent_req_post(req, ev);
126 : }
127 :
128 28 : state->r.in.new_password = talloc_strdup(state,
129 14 : request->data.chauthtok.newpass);
130 14 : if (tevent_req_nomem(state->r.in.new_password, req)) {
131 0 : return tevent_req_post(req, ev);
132 : }
133 :
134 14 : subreq = dcerpc_wbint_PamAuthChangePassword_r_send(state,
135 : global_event_context(),
136 : dom_child_handle(contact_domain),
137 14 : &state->r);
138 14 : if (tevent_req_nomem(subreq, req)) {
139 0 : return tevent_req_post(req, ev);
140 : }
141 14 : tevent_req_set_callback(subreq, winbindd_pam_chauthtok_done, req);
142 14 : return req;
143 : }
144 :
145 14 : static void winbindd_pam_chauthtok_done(struct tevent_req *subreq)
146 : {
147 14 : struct tevent_req *req = tevent_req_callback_data(
148 : subreq, struct tevent_req);
149 14 : struct winbindd_pam_chauthtok_state *state = tevent_req_data(
150 : req, struct winbindd_pam_chauthtok_state);
151 0 : NTSTATUS status;
152 :
153 14 : status = dcerpc_wbint_PamAuthChangePassword_r_recv(subreq, state);
154 14 : TALLOC_FREE(subreq);
155 14 : if (tevent_req_nterror(req, status)) {
156 0 : return;
157 : }
158 :
159 14 : tevent_req_done(req);
160 : }
161 :
162 14 : NTSTATUS winbindd_pam_chauthtok_recv(struct tevent_req *req,
163 : struct winbindd_response *response)
164 : {
165 14 : struct winbindd_pam_chauthtok_state *state = tevent_req_data(
166 : req, struct winbindd_pam_chauthtok_state);
167 14 : NTSTATUS status = NT_STATUS_OK;
168 :
169 14 : if (tevent_req_is_nterror(req, &status)) {
170 0 : set_auth_errors(response, status);
171 0 : return status;
172 : }
173 :
174 14 : response->result = WINBINDD_PENDING;
175 :
176 14 : set_auth_errors(response, state->r.out.result);
177 14 : if (*state->r.out.dominfo != NULL) {
178 0 : fill_in_password_policy(response, *state->r.out.dominfo);
179 : }
180 14 : response->data.auth.reject_reason = *state->r.out.reject_reason;
181 :
182 14 : if (state->r.in.flags & WBFLAG_PAM_CACHED_LOGIN) {
183 :
184 : /* Update the single sign-on memory creds. */
185 0 : status = winbindd_replace_memory_creds(
186 : state->r.in.user, state->r.in.new_password);
187 :
188 0 : DEBUG(10, ("winbindd_replace_memory_creds returned %s\n",
189 : nt_errstr(status)));
190 :
191 : /*
192 : * When we login from gdm or xdm and password expires,
193 : * we change password, but there are no memory
194 : * credentials. So, winbindd_replace_memory_creds()
195 : * returns NT_STATUS_OBJECT_NAME_NOT_FOUND. This is
196 : * not a failure. --- BoYang
197 : */
198 0 : if (NT_STATUS_EQUAL(status, NT_STATUS_OBJECT_NAME_NOT_FOUND)) {
199 0 : status = NT_STATUS_OK;
200 : }
201 : }
202 :
203 14 : return NT_STATUS(response->data.auth.nt_status);
204 : }
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