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/*
Unix SMB/CIFS implementation.
async implementation of WINBINDD_PAM_CHAUTHTOK
Copyright (C) Volker Lendecke 2010
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "includes.h"
#include "winbindd.h"
struct winbindd_pam_chauthtok_state {
struct winbindd_request *request;
struct winbindd_response *response;
};
static void winbindd_pam_chauthtok_done(struct tevent_req *subreq);
struct tevent_req *winbindd_pam_chauthtok_send(
TALLOC_CTX *mem_ctx,
struct tevent_context *ev,
struct winbindd_cli_state *cli,
struct winbindd_request *request)
{
struct tevent_req *req, *subreq;
struct winbindd_pam_chauthtok_state *state;
struct winbindd_domain *contact_domain;
fstring namespace, domain, user;
char *mapped_user;
NTSTATUS status;
bool ok;
req = tevent_req_create(mem_ctx, &state,
struct winbindd_pam_chauthtok_state);
if (req == NULL) {
return NULL;
}
state->request = request;
/* Ensure null termination */
request->data.chauthtok.user[
sizeof(request->data.chauthtok.user)-1]='\0';
DEBUG(3, ("[%5lu]: pam chauthtok %s\n", (unsigned long)cli->pid,
request->data.chauthtok.user));
status = normalize_name_unmap(state, request->data.chauthtok.user,
&mapped_user);
if (NT_STATUS_IS_OK(status) ||
NT_STATUS_EQUAL(status, NT_STATUS_FILE_RENAMED)) {
fstrcpy(request->data.chauthtok.user, mapped_user);
}
ok = canonicalize_username(request->data.chauthtok.user,
namespace,
domain,
user);
if (!ok) {
DEBUG(10, ("winbindd_pam_chauthtok: canonicalize_username %s "
"failed with\n", request->data.chauthtok.user));
tevent_req_nterror(req, NT_STATUS_NO_SUCH_USER);
return tevent_req_post(req, ev);
}
contact_domain = find_domain_from_name(namespace);
if (contact_domain == NULL) {
DEBUG(3, ("Cannot change password for [%s] -> [%s]\\[%s] "
"as %s is not a trusted domain\n",
request->data.chauthtok.user, domain, user, domain));
tevent_req_nterror(req, NT_STATUS_NO_SUCH_USER);
return tevent_req_post(req, ev);
}
subreq = wb_domain_request_send(state, global_event_context(),
contact_domain, request);
if (tevent_req_nomem(subreq, req)) {
return tevent_req_post(req, ev);
}
tevent_req_set_callback(subreq, winbindd_pam_chauthtok_done, req);
return req;
}
static void winbindd_pam_chauthtok_done(struct tevent_req *subreq)
{
struct tevent_req *req = tevent_req_callback_data(
subreq, struct tevent_req);
struct winbindd_pam_chauthtok_state *state = tevent_req_data(
req, struct winbindd_pam_chauthtok_state);
int res, err;
res = wb_domain_request_recv(subreq, state, &state->response, &err);
TALLOC_FREE(subreq);
if (res == -1) {
tevent_req_nterror(req, map_nt_error_from_unix(err));
return;
}
tevent_req_done(req);
}
NTSTATUS winbindd_pam_chauthtok_recv(struct tevent_req *req,
struct winbindd_response *response)
{
struct winbindd_pam_chauthtok_state *state = tevent_req_data(
req, struct winbindd_pam_chauthtok_state);
NTSTATUS status;
if (tevent_req_is_nterror(req, &status)) {
set_auth_errors(response, status);
return status;
}
*response = *state->response;
response->result = WINBINDD_PENDING;
state->response = talloc_move(response, &state->response);
status = NT_STATUS(response->data.auth.nt_status);
if (!NT_STATUS_IS_OK(status)) {
return status;
}
if (state->request->flags & WBFLAG_PAM_CACHED_LOGIN) {
/* Update the single sign-on memory creds. */
status = winbindd_replace_memory_creds(
state->request->data.chauthtok.user,
state->request->data.chauthtok.newpass);
DEBUG(10, ("winbindd_replace_memory_creds returned %s\n",
nt_errstr(status)));
/*
* When we login from gdm or xdm and password expires,
* we change password, but there are no memory
* crendentials So, winbindd_replace_memory_creds()
* returns NT_STATUS_OBJECT_NAME_NOT_FOUND. This is
* not a failure. --- BoYang
*/
if (NT_STATUS_EQUAL(status, NT_STATUS_OBJECT_NAME_NOT_FOUND)) {
status = NT_STATUS_OK;
}
}
return status;
}
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