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/*
Unix SMB/CIFS implementation.
async fill_pwent
Copyright (C) Volker Lendecke 2009
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"
#include "librpc/gen_ndr/ndr_wbint_c.h"
struct wb_fill_pwent_state {
struct tevent_context *ev;
struct wbint_userinfo *info;
struct winbindd_pw *pw;
};
static bool fillup_pw_field(const char *lp_template,
const char *username,
const char *domname,
uid_t uid,
gid_t gid,
const char *in,
fstring out);
static void wb_fill_pwent_sid2uid_done(struct tevent_req *subreq);
static void wb_fill_pwent_sid2gid_done(struct tevent_req *subreq);
struct tevent_req *wb_fill_pwent_send(TALLOC_CTX *mem_ctx,
struct tevent_context *ev,
struct wbint_userinfo *info,
struct winbindd_pw *pw)
{
struct tevent_req *req, *subreq;
struct wb_fill_pwent_state *state;
req = tevent_req_create(mem_ctx, &state, struct wb_fill_pwent_state);
if (req == NULL) {
return NULL;
}
state->ev = ev;
state->info = info;
state->pw = pw;
subreq = wb_sids2xids_send(state, state->ev, &state->info->user_sid, 1);
if (tevent_req_nomem(subreq, req)) {
return tevent_req_post(req, ev);
}
tevent_req_set_callback(subreq, wb_fill_pwent_sid2uid_done, req);
return req;
}
static void wb_fill_pwent_sid2uid_done(struct tevent_req *subreq)
{
struct tevent_req *req = tevent_req_callback_data(
subreq, struct tevent_req);
struct wb_fill_pwent_state *state = tevent_req_data(
req, struct wb_fill_pwent_state);
NTSTATUS status;
struct unixid xid;
status = wb_sids2xids_recv(subreq, &xid);
TALLOC_FREE(subreq);
if (tevent_req_nterror(req, status)) {
return;
}
/*
* We are filtering further down in sids2xids, but that filtering
* depends on the actual type of the sid handed in (as determined
* by lookupsids). Here we need to filter for the type of object
* actually requested, in this case uid.
*/
if (!(xid.type == ID_TYPE_UID || xid.type == ID_TYPE_BOTH)) {
tevent_req_nterror(req, NT_STATUS_NONE_MAPPED);
return;
}
state->pw->pw_uid = (uid_t)xid.id;
subreq = wb_sids2xids_send(state, state->ev, &state->info->group_sid, 1);
if (tevent_req_nomem(subreq, req)) {
return;
}
tevent_req_set_callback(subreq, wb_fill_pwent_sid2gid_done, req);
}
static void wb_fill_pwent_sid2gid_done(struct tevent_req *subreq)
{
struct tevent_req *req = tevent_req_callback_data(
subreq, struct tevent_req);
struct wb_fill_pwent_state *state = tevent_req_data(
req, struct wb_fill_pwent_state);
struct winbindd_domain *domain;
char *dom_name;
fstring user_name, output_username;
char *mapped_name = NULL;
NTSTATUS status;
struct unixid xid;
status = wb_sids2xids_recv(subreq, &xid);
TALLOC_FREE(subreq);
if (tevent_req_nterror(req, status)) {
return;
}
/*
* We are filtering further down in sids2xids, but that filtering
* depends on the actual type of the sid handed in (as determined
* by lookupsids). Here we need to filter for the type of object
* actually requested, in this case gid.
*/
if (!(xid.type == ID_TYPE_GID || xid.type == ID_TYPE_BOTH)) {
tevent_req_nterror(req, NT_STATUS_NONE_MAPPED);
return;
}
state->pw->pw_gid = (gid_t)xid.id;
domain = find_domain_from_sid_noinit(&state->info->user_sid);
if (domain == NULL) {
tevent_req_nterror(req, NT_STATUS_NO_SUCH_USER);
return;
}
dom_name = domain->name;
/* Username */
fstrcpy(user_name, state->info->acct_name);
if (!strlower_m(user_name)) {
tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
return;
}
status = normalize_name_map(state, domain, user_name, &mapped_name);
/* Basic removal of whitespace */
if (NT_STATUS_IS_OK(status)) {
fill_domain_username(output_username, dom_name, mapped_name,
true);
}
/* Complete name replacement */
else if (NT_STATUS_EQUAL(status, NT_STATUS_FILE_RENAMED)) {
fstrcpy(output_username, mapped_name);
}
/* No change at all */
else {
fill_domain_username(output_username, dom_name, user_name,
true);
}
strlcpy(state->pw->pw_name,
output_username,
sizeof(state->pw->pw_name));
fstrcpy(state->pw->pw_gecos, state->info->full_name);
/* Home directory and shell */
if (!fillup_pw_field(lp_template_homedir(), user_name, dom_name,
state->pw->pw_uid, state->pw->pw_gid,
state->info->homedir, state->pw->pw_dir)) {
tevent_req_nterror(req, NT_STATUS_NO_SUCH_USER);
return;
}
if (!fillup_pw_field(lp_template_shell(), user_name, dom_name,
state->pw->pw_uid, state->pw->pw_gid,
state->info->shell, state->pw->pw_shell)) {
tevent_req_nterror(req, NT_STATUS_NO_SUCH_USER);
return;
}
/* Password - set to "*" as we can't generate anything useful here.
Authentication can be done using the pam_winbind module. */
fstrcpy(state->pw->pw_passwd, "*");
tevent_req_done(req);
}
NTSTATUS wb_fill_pwent_recv(struct tevent_req *req)
{
return tevent_req_simple_recv_ntstatus(req);
}
static bool fillup_pw_field(const char *lp_template,
const char *username,
const char *domname,
uid_t uid,
gid_t gid,
const char *in,
fstring out)
{
char *templ;
if (out == NULL)
return False;
/* The substitution of %U and %D in the 'template
homedir' is done by talloc_sub_specified() below.
If we have an in string (which means the value has already
been set in the nss_info backend), then use that.
Otherwise use the template value passed in. */
if ((in != NULL) && (in[0] != '\0') && (lp_security() == SEC_ADS)) {
templ = talloc_sub_specified(talloc_tos(), in,
username, domname,
uid, gid);
} else {
templ = talloc_sub_specified(talloc_tos(), lp_template,
username, domname,
uid, gid);
}
if (!templ)
return False;
strlcpy(out, templ, sizeof(fstring));
TALLOC_FREE(templ);
return True;
}
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