diff options
Diffstat (limited to 'source3/winbindd/wb_sids2xids.c')
| -rw-r--r-- | source3/winbindd/wb_sids2xids.c | 263 |
1 files changed, 263 insertions, 0 deletions
diff --git a/source3/winbindd/wb_sids2xids.c b/source3/winbindd/wb_sids2xids.c new file mode 100644 index 0000000000..7a198c18ce --- /dev/null +++ b/source3/winbindd/wb_sids2xids.c @@ -0,0 +1,263 @@ +/* + Unix SMB/CIFS implementation. + async sids2xids + Copyright (C) Volker Lendecke 2011 + Copyright (C) Michael Adam 2012 + + 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 "../libcli/security/security.h" +#include "idmap_cache.h" +#include "librpc/gen_ndr/ndr_wbint_c.h" + +struct wb_sids2xids_state { + struct tevent_context *ev; + + struct dom_sid *sids; + uint32_t num_sids; + + struct id_map *cached; + + struct dom_sid *non_cached; + uint32_t num_non_cached; + + struct lsa_RefDomainList *domains; + struct lsa_TransNameArray *names; + + struct wbint_TransIDArray ids; +}; + + +static bool wb_sids2xids_in_cache(struct dom_sid *sid, struct id_map *map); +static void wb_sids2xids_lookupsids_done(struct tevent_req *subreq); +static void wb_sids2xids_done(struct tevent_req *subreq); + +struct tevent_req *wb_sids2xids_send(TALLOC_CTX *mem_ctx, + struct tevent_context *ev, + const struct dom_sid *sids, + const uint32_t num_sids) +{ + struct tevent_req *req, *subreq; + struct wb_sids2xids_state *state; + uint32_t i; + + req = tevent_req_create(mem_ctx, &state, + struct wb_sids2xids_state); + if (req == NULL) { + return NULL; + } + + state->ev = ev; + + state->num_sids = num_sids; + + state->sids = talloc_zero_array(state, struct dom_sid, num_sids); + if (tevent_req_nomem(state->sids, req)) { + return tevent_req_post(req, ev); + } + + for (i = 0; i < num_sids; i++) { + sid_copy(&state->sids[i], &sids[i]); + } + + state->cached = talloc_zero_array(state, struct id_map, num_sids); + if (tevent_req_nomem(state->cached, req)) { + return tevent_req_post(req, ev); + } + + state->non_cached = talloc_array(state, struct dom_sid, num_sids); + if (tevent_req_nomem(state->non_cached, req)) { + return tevent_req_post(req, ev); + } + + /* + * Extract those sids that can not be resolved from cache + * into a separate list to be handed to id mapping, keeping + * the same index. + */ + for (i=0; i<state->num_sids; i++) { + + DEBUG(10, ("SID %d: %s\n", (int)i, + sid_string_dbg(&state->sids[i]))); + + if (wb_sids2xids_in_cache(&state->sids[i], &state->cached[i])) { + continue; + } + sid_copy(&state->non_cached[state->num_non_cached], + &state->sids[i]); + state->num_non_cached += 1; + } + + if (state->num_non_cached == 0) { + tevent_req_done(req); + return tevent_req_post(req, ev); + } + + subreq = wb_lookupsids_send(state, ev, state->non_cached, + state->num_non_cached); + if (tevent_req_nomem(subreq, req)) { + return tevent_req_post(req, ev); + } + tevent_req_set_callback(subreq, wb_sids2xids_lookupsids_done, req); + return req; +} + +static bool wb_sids2xids_in_cache(struct dom_sid *sid, struct id_map *map) +{ + struct unixid id; + bool expired; + + if (!winbindd_use_idmap_cache()) { + return false; + } + if (idmap_cache_find_sid2unixid(sid, &id, &expired)) { + if (expired && is_domain_online(find_our_domain())) { + return false; + } + map->sid = sid; + map->xid = id; + map->status = ID_MAPPED; + return true; + } + return false; +} + +static enum id_type lsa_SidType_to_id_type(const enum lsa_SidType sid_type); + +static void wb_sids2xids_lookupsids_done(struct tevent_req *subreq) +{ + struct tevent_req *req = tevent_req_callback_data( + subreq, struct tevent_req); + struct wb_sids2xids_state *state = tevent_req_data( + req, struct wb_sids2xids_state); + struct winbindd_child *child; + NTSTATUS status; + int i; + + status = wb_lookupsids_recv(subreq, state, &state->domains, + &state->names); + TALLOC_FREE(subreq); + if (tevent_req_nterror(req, status)) { + return; + } + + state->ids.num_ids = state->num_non_cached; + state->ids.ids = talloc_array(state, struct wbint_TransID, + state->num_non_cached); + if (tevent_req_nomem(state->ids.ids, req)) { + return; + } + + for (i=0; i<state->num_non_cached; i++) { + struct lsa_TranslatedName *n = &state->names->names[i]; + struct wbint_TransID *t = &state->ids.ids[i]; + + t->type = lsa_SidType_to_id_type(n->sid_type); + t->domain_index = n->sid_index; + sid_peek_rid(&state->non_cached[i], &t->rid); + t->unix_id = (uint64_t)-1; + } + + child = idmap_child(); + + subreq = dcerpc_wbint_Sids2UnixIDs_send( + state, state->ev, child->binding_handle, state->domains, + &state->ids); + if (tevent_req_nomem(subreq, req)) { + return; + } + tevent_req_set_callback(subreq, wb_sids2xids_done, req); +} + +static enum id_type lsa_SidType_to_id_type(const enum lsa_SidType sid_type) +{ + enum id_type type; + + switch(sid_type) { + case SID_NAME_COMPUTER: + case SID_NAME_USER: + type = ID_TYPE_UID; + break; + case SID_NAME_DOM_GRP: + case SID_NAME_ALIAS: + case SID_NAME_WKN_GRP: + type = ID_TYPE_GID; + break; + default: + type = ID_TYPE_NOT_SPECIFIED; + break; + } + + return type; +} + + +static void wb_sids2xids_done(struct tevent_req *subreq) +{ + struct tevent_req *req = tevent_req_callback_data( + subreq, struct tevent_req); + struct wb_sids2xids_state *state = tevent_req_data( + req, struct wb_sids2xids_state); + NTSTATUS status, result; + + status = dcerpc_wbint_Sids2UnixIDs_recv(subreq, state, &result); + TALLOC_FREE(subreq); + if (any_nt_status_not_ok(status, result, &status)) { + tevent_req_nterror(req, status); + return; + } + tevent_req_done(req); +} + +NTSTATUS wb_sids2xids_recv(struct tevent_req *req, + struct unixid *xids) +{ + struct wb_sids2xids_state *state = tevent_req_data( + req, struct wb_sids2xids_state); + NTSTATUS status; + uint32_t i, num_non_cached; + + if (tevent_req_is_nterror(req, &status)) { + DEBUG(5, ("wb_sids_to_xids failed: %s\n", nt_errstr(status))); + return status; + } + + num_non_cached = 0; + + for (i=0; i<state->num_sids; i++) { + struct unixid xid; + + xid.id = UINT32_MAX; + + if (state->cached[i].sid != NULL) { + xid = state->cached[i].xid; + } else { + xid.id = state->ids.ids[num_non_cached].unix_id; + xid.type = state->ids.ids[num_non_cached].type; + + idmap_cache_set_sid2unixid( + &state->non_cached[num_non_cached], + &xid); + + num_non_cached += 1; + } + + xids[i] = xid; + } + + return NT_STATUS_OK; +} |