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 13 : 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 : struct tevent_req *req, *subreq;
54 : struct winbindd_pam_chauthtok_state *state;
55 : struct winbindd_domain *contact_domain;
56 : fstring namespace, domain, user;
57 : char *mapped_user;
58 : NTSTATUS status;
59 : bool ok;
60 :
61 13 : req = tevent_req_create(mem_ctx, &state,
62 : struct winbindd_pam_chauthtok_state);
63 13 : if (req == NULL) {
64 0 : return NULL;
65 : }
66 :
67 : /* Ensure null termination */
68 : request->data.chauthtok.user[
69 13 : sizeof(request->data.chauthtok.user)-1]='\0';
70 :
71 13 : DEBUG(3, ("[%5lu]: pam chauthtok %s\n", (unsigned long)cli->pid,
72 : request->data.chauthtok.user));
73 :
74 13 : status = normalize_name_unmap(state, request->data.chauthtok.user,
75 : &mapped_user);
76 :
77 20 : if (NT_STATUS_IS_OK(status) ||
78 13 : NT_STATUS_EQUAL(status, NT_STATUS_FILE_RENAMED)) {
79 0 : fstrcpy(request->data.chauthtok.user, mapped_user);
80 : }
81 :
82 13 : ok = canonicalize_username(request->data.chauthtok.user,
83 : namespace,
84 : domain,
85 : user);
86 13 : if (!ok) {
87 0 : DEBUG(10, ("winbindd_pam_chauthtok: canonicalize_username %s "
88 : "failed with\n", request->data.chauthtok.user));
89 0 : tevent_req_nterror(req, NT_STATUS_NO_SUCH_USER);
90 0 : return tevent_req_post(req, ev);
91 : }
92 :
93 13 : contact_domain = find_domain_from_name(namespace);
94 13 : if (contact_domain == NULL) {
95 0 : DEBUG(3, ("Cannot change password for [%s] -> [%s]\\[%s] "
96 : "as %s is not a trusted domain\n",
97 : request->data.chauthtok.user, domain, user, domain));
98 0 : tevent_req_nterror(req, NT_STATUS_NO_SUCH_USER);
99 0 : return tevent_req_post(req, ev);
100 : }
101 :
102 13 : state->r.in.client_pid = request->pid;
103 13 : state->r.in.flags = request->flags;
104 :
105 13 : state->r.in.client_name = talloc_strdup(state, request->client_name);
106 13 : if (tevent_req_nomem(state->r.in.client_name, req)) {
107 0 : return tevent_req_post(req, ev);
108 : }
109 :
110 13 : state->r.in.user = talloc_strdup(state, request->data.chauthtok.user);
111 13 : if (tevent_req_nomem(state->r.in.user, req)) {
112 0 : return tevent_req_post(req, ev);
113 : }
114 :
115 19 : state->r.in.old_password = talloc_strdup(state,
116 13 : request->data.chauthtok.oldpass);
117 13 : if (tevent_req_nomem(state->r.in.old_password, req)) {
118 0 : return tevent_req_post(req, ev);
119 : }
120 :
121 19 : state->r.in.new_password = talloc_strdup(state,
122 13 : request->data.chauthtok.newpass);
123 13 : if (tevent_req_nomem(state->r.in.new_password, req)) {
124 0 : return tevent_req_post(req, ev);
125 : }
126 :
127 13 : subreq = dcerpc_wbint_PamAuthChangePassword_r_send(state,
128 : global_event_context(),
129 : dom_child_handle(contact_domain),
130 13 : &state->r);
131 13 : if (tevent_req_nomem(subreq, req)) {
132 0 : return tevent_req_post(req, ev);
133 : }
134 13 : tevent_req_set_callback(subreq, winbindd_pam_chauthtok_done, req);
135 13 : return req;
136 : }
137 :
138 13 : static void winbindd_pam_chauthtok_done(struct tevent_req *subreq)
139 : {
140 13 : struct tevent_req *req = tevent_req_callback_data(
141 : subreq, struct tevent_req);
142 13 : struct winbindd_pam_chauthtok_state *state = tevent_req_data(
143 : req, struct winbindd_pam_chauthtok_state);
144 : NTSTATUS status;
145 :
146 13 : status = dcerpc_wbint_PamAuthChangePassword_r_recv(subreq, state);
147 13 : TALLOC_FREE(subreq);
148 13 : if (tevent_req_nterror(req, status)) {
149 0 : return;
150 : }
151 :
152 13 : tevent_req_done(req);
153 : }
154 :
155 13 : NTSTATUS winbindd_pam_chauthtok_recv(struct tevent_req *req,
156 : struct winbindd_response *response)
157 : {
158 13 : struct winbindd_pam_chauthtok_state *state = tevent_req_data(
159 : req, struct winbindd_pam_chauthtok_state);
160 13 : NTSTATUS status = NT_STATUS_OK;
161 :
162 13 : if (tevent_req_is_nterror(req, &status)) {
163 0 : set_auth_errors(response, status);
164 0 : return status;
165 : }
166 :
167 13 : response->result = WINBINDD_PENDING;
168 :
169 13 : set_auth_errors(response, state->r.out.result);
170 13 : if (*state->r.out.dominfo != NULL) {
171 0 : fill_in_password_policy(response, *state->r.out.dominfo);
172 : }
173 13 : response->data.auth.reject_reason = *state->r.out.reject_reason;
174 :
175 13 : if (state->r.in.flags & WBFLAG_PAM_CACHED_LOGIN) {
176 :
177 : /* Update the single sign-on memory creds. */
178 0 : status = winbindd_replace_memory_creds(
179 : state->r.in.user, state->r.in.new_password);
180 :
181 0 : DEBUG(10, ("winbindd_replace_memory_creds returned %s\n",
182 : nt_errstr(status)));
183 :
184 : /*
185 : * When we login from gdm or xdm and password expires,
186 : * we change password, but there are no memory
187 : * crendentials So, winbindd_replace_memory_creds()
188 : * returns NT_STATUS_OBJECT_NAME_NOT_FOUND. This is
189 : * not a failure. --- BoYang
190 : */
191 0 : if (NT_STATUS_EQUAL(status, NT_STATUS_OBJECT_NAME_NOT_FOUND)) {
192 0 : status = NT_STATUS_OK;
193 : }
194 : }
195 :
196 13 : return NT_STATUS(response->data.auth.nt_status);
197 : }
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