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https://github.com/samba-team/samba.git
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32bd64359c
Signed-off-by: Jeremy Allison <jra@samba.org>
307 lines
7.8 KiB
C
307 lines
7.8 KiB
C
/*
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Unix SMB/CIFS implementation.
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async implementation of WINBINDD_SIDS_TO_XIDS
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Copyright (C) Volker Lendecke 2011
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "includes.h"
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#include "winbindd.h"
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#include "../libcli/security/security.h"
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#include "librpc/gen_ndr/ndr_wbint_c.h"
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#include "idmap_cache.h"
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struct winbindd_sids_to_xids_state {
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struct tevent_context *ev;
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struct dom_sid *sids;
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uint32_t num_sids;
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struct id_map *cached;
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struct dom_sid *non_cached;
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uint32_t num_non_cached;
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struct lsa_RefDomainList *domains;
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struct lsa_TransNameArray *names;
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struct wbint_TransIDArray ids;
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};
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static bool winbindd_sids_to_xids_in_cache(struct dom_sid *sid,
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struct id_map *map);
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static void winbindd_sids_to_xids_lookupsids_done(struct tevent_req *subreq);
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static void winbindd_sids_to_xids_done(struct tevent_req *subreq);
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struct tevent_req *winbindd_sids_to_xids_send(TALLOC_CTX *mem_ctx,
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struct tevent_context *ev,
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struct winbindd_cli_state *cli,
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struct winbindd_request *request)
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{
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struct tevent_req *req, *subreq;
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struct winbindd_sids_to_xids_state *state;
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uint32_t i;
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req = tevent_req_create(mem_ctx, &state,
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struct winbindd_sids_to_xids_state);
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if (req == NULL) {
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return NULL;
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}
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state->ev = ev;
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DEBUG(3, ("sids_to_xids\n"));
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if (request->extra_len == 0) {
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tevent_req_done(req);
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return tevent_req_post(req, ev);
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}
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if (request->extra_data.data[request->extra_len-1] != '\0') {
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DEBUG(10, ("Got invalid sids list\n"));
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tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
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return tevent_req_post(req, ev);
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}
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if (!parse_sidlist(state, request->extra_data.data,
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&state->sids, &state->num_sids)) {
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DEBUG(10, ("parse_sidlist failed\n"));
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tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
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return tevent_req_post(req, ev);
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}
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DEBUG(10, ("num_sids: %d\n", (int)state->num_sids));
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state->cached = TALLOC_ZERO_ARRAY(state, struct id_map,
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state->num_sids);
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if (tevent_req_nomem(state->cached, req)) {
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return tevent_req_post(req, ev);
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}
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state->non_cached = TALLOC_ARRAY(state, struct dom_sid,
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state->num_sids);
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if (tevent_req_nomem(state->non_cached, req)) {
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return tevent_req_post(req, ev);
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}
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for (i=0; i<state->num_sids; i++) {
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DEBUG(10, ("SID %d: %s\n", (int)i,
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sid_string_dbg(&state->sids[i])));
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if (winbindd_sids_to_xids_in_cache(&state->sids[i],
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&state->cached[i])) {
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continue;
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}
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sid_copy(&state->non_cached[state->num_non_cached],
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&state->sids[i]);
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state->num_non_cached += 1;
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}
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if (state->num_non_cached == 0) {
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tevent_req_done(req);
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return tevent_req_post(req, ev);
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}
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subreq = wb_lookupsids_send(state, ev, state->non_cached,
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state->num_non_cached);
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if (tevent_req_nomem(subreq, req)) {
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return tevent_req_post(req, ev);
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}
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tevent_req_set_callback(subreq, winbindd_sids_to_xids_lookupsids_done,
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req);
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return req;
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}
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static bool winbindd_sids_to_xids_in_cache(struct dom_sid *sid,
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struct id_map *map)
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{
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uid_t uid;
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gid_t gid;
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bool expired;
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if (!winbindd_use_idmap_cache()) {
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return false;
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}
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/*
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* SIDS_TO_XIDS is primarily used to resolve the user's group
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* sids. So we check groups before users.
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*/
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if (idmap_cache_find_sid2gid(sid, &gid, &expired)) {
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if (expired && is_domain_offline(find_our_domain())) {
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return false;
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}
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map->sid = sid;
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map->xid.id = gid;
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map->xid.type = ID_TYPE_GID;
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map->status = ID_MAPPED;
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return true;
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}
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if (idmap_cache_find_sid2uid(sid, &uid, &expired)) {
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if (expired && is_domain_online(find_our_domain())) {
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return false;
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}
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map->sid = sid;
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map->xid.id = uid;
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map->xid.type = ID_TYPE_UID;
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map->status = ID_MAPPED;
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return true;
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}
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return false;
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}
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static void winbindd_sids_to_xids_lookupsids_done(struct tevent_req *subreq)
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{
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struct tevent_req *req = tevent_req_callback_data(
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subreq, struct tevent_req);
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struct winbindd_sids_to_xids_state *state = tevent_req_data(
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req, struct winbindd_sids_to_xids_state);
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struct winbindd_child *child;
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NTSTATUS status;
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int i;
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status = wb_lookupsids_recv(subreq, state, &state->domains,
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&state->names);
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TALLOC_FREE(subreq);
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if (!NT_STATUS_IS_OK(status)) {
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tevent_req_nterror(req, status);
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return;
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}
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state->ids.num_ids = state->num_non_cached;
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state->ids.ids = TALLOC_ARRAY(state, struct wbint_TransID,
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state->num_non_cached);
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if (tevent_req_nomem(state->ids.ids, req)) {
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return;
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}
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for (i=0; i<state->num_non_cached; i++) {
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struct lsa_TranslatedName *n = &state->names->names[i];
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struct wbint_TransID *t = &state->ids.ids[i];
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switch (n->sid_type) {
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case SID_NAME_USER:
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case SID_NAME_COMPUTER:
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t->type = WBC_ID_TYPE_UID;
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break;
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case SID_NAME_DOM_GRP:
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case SID_NAME_ALIAS:
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case SID_NAME_WKN_GRP:
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t->type = WBC_ID_TYPE_GID;
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break;
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default:
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t->type = WBC_ID_TYPE_NOT_SPECIFIED;
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break;
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};
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t->domain_index = n->sid_index;
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sid_peek_rid(&state->sids[i], &t->rid);
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t->unix_id = (uint64_t)-1;
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}
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child = idmap_child();
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subreq = dcerpc_wbint_Sids2UnixIDs_send(
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state, state->ev, child->binding_handle, state->domains,
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&state->ids);
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if (tevent_req_nomem(subreq, req)) {
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return;
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}
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tevent_req_set_callback(subreq, winbindd_sids_to_xids_done, req);
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}
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static void winbindd_sids_to_xids_done(struct tevent_req *subreq)
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{
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struct tevent_req *req = tevent_req_callback_data(
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subreq, struct tevent_req);
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struct winbindd_sids_to_xids_state *state = tevent_req_data(
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req, struct winbindd_sids_to_xids_state);
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NTSTATUS status, result;
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status = dcerpc_wbint_Sids2UnixIDs_recv(subreq, state, &result);
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TALLOC_FREE(subreq);
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if (any_nt_status_not_ok(status, result, &status)) {
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tevent_req_nterror(req, status);
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return;
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}
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tevent_req_done(req);
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}
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NTSTATUS winbindd_sids_to_xids_recv(struct tevent_req *req,
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struct winbindd_response *response)
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{
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struct winbindd_sids_to_xids_state *state = tevent_req_data(
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req, struct winbindd_sids_to_xids_state);
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NTSTATUS status;
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char *result;
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uint32_t i, num_non_cached;
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if (tevent_req_is_nterror(req, &status)) {
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DEBUG(5, ("wb_sids_to_xids failed: %s\n", nt_errstr(status)));
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return status;
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}
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result = talloc_strdup(response, "");
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if (result == NULL) {
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return NT_STATUS_NO_MEMORY;
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}
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num_non_cached = 0;
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for (i=0; i<state->num_sids; i++) {
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char type;
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uint64_t unix_id = (uint64_t)-1;
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bool found = true;
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if (state->cached[i].sid != NULL) {
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unix_id = state->cached[i].xid.id;
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if (state->cached[i].xid.type == ID_TYPE_UID) {
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type = 'U';
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} else {
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type = 'G';
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}
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} else {
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unix_id = state->ids.ids[num_non_cached].unix_id;
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switch(state->ids.ids[num_non_cached].type) {
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case WBC_ID_TYPE_UID:
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type = 'U';
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idmap_cache_set_sid2uid(
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&state->non_cached[num_non_cached],
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unix_id);
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break;
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case WBC_ID_TYPE_GID:
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type = 'G';
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idmap_cache_set_sid2gid(
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&state->non_cached[num_non_cached],
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unix_id);
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break;
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default:
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found = false;
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}
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num_non_cached += 1;
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}
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if (found) {
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result = talloc_asprintf_append_buffer(
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result, "%c%lu\n", type,
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(unsigned long)unix_id);
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} else {
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result = talloc_asprintf_append_buffer(result, "\n");
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}
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if (result == NULL) {
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return NT_STATUS_NO_MEMORY;
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}
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}
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response->extra_data.data = result;
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response->length += talloc_get_size(result);
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return NT_STATUS_OK;
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}
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