/* Unix SMB/CIFS implementation. async sid2uid 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" #include "idmap_cache.h" #include "../libcli/security/security.h" struct wb_sid2uid_state { struct tevent_context *ev; struct dom_sid sid; char *dom_name; uint64 uid64; uid_t uid; }; static void wb_sid2uid_lookup_done(struct tevent_req *subreq); static void wb_sid2uid_done(struct tevent_req *subreq); struct tevent_req *wb_sid2uid_send(TALLOC_CTX *mem_ctx, struct tevent_context *ev, const struct dom_sid *sid) { struct tevent_req *req, *subreq; struct wb_sid2uid_state *state; bool expired; req = tevent_req_create(mem_ctx, &state, struct wb_sid2uid_state); if (req == NULL) { return NULL; } sid_copy(&state->sid, sid); state->ev = ev; if (winbindd_use_idmap_cache() && idmap_cache_find_sid2uid(sid, &state->uid, &expired)) { DEBUG(10, ("idmap_cache_find_sid2uid found %d%s\n", (int)state->uid, expired ? " (expired)": "")); if (!expired || is_domain_offline(find_our_domain())) { if (state->uid == -1) { tevent_req_nterror(req, NT_STATUS_NONE_MAPPED); } else { tevent_req_done(req); } return tevent_req_post(req, ev); } } /* * We need to make sure the sid is of the right type to not flood * idmap with wrong entries */ subreq = wb_lookupsid_send(state, ev, &state->sid); if (tevent_req_nomem(subreq, req)) { return tevent_req_post(req, ev); } tevent_req_set_callback(subreq, wb_sid2uid_lookup_done, req); return req; } static void wb_sid2uid_lookup_done(struct tevent_req *subreq) { struct tevent_req *req = tevent_req_callback_data( subreq, struct tevent_req); struct wb_sid2uid_state *state = tevent_req_data( req, struct wb_sid2uid_state); struct winbindd_domain *domain; const char *domname; const char *name; enum lsa_SidType type; NTSTATUS status; struct winbindd_child *child; status = wb_lookupsid_recv(subreq, talloc_tos(), &type, &domname, &name); if (tevent_req_nterror(req, status)) { return; } if ((type != SID_NAME_USER) && (type != SID_NAME_COMPUTER)) { DEBUG(5, ("Sid %s is not a user or a computer.\n", sid_string_dbg(&state->sid))); /* * We have to set the cache ourselves here, the child * which is normally responsible was not queried yet. */ idmap_cache_set_sid2uid(&state->sid, -1); tevent_req_nterror(req, NT_STATUS_INVALID_SID); return; } domain = find_domain_from_sid_noinit(&state->sid); /* * TODO: Issue a gettrustinfo here in case we don't have "domain" yet? */ if ((domain != NULL) && domain->have_idmap_config) { state->dom_name = domain->name; } else { state->dom_name = NULL; } child = idmap_child(); subreq = dcerpc_wbint_Sid2Uid_send(state, state->ev, child->binding_handle, state->dom_name, &state->sid, &state->uid64); if (tevent_req_nomem(subreq, req)) { return; } tevent_req_set_callback(subreq, wb_sid2uid_done, req); } static void wb_sid2uid_done(struct tevent_req *subreq) { struct tevent_req *req = tevent_req_callback_data( subreq, struct tevent_req); struct wb_sid2uid_state *state = tevent_req_data( req, struct wb_sid2uid_state); NTSTATUS status, result; status = dcerpc_wbint_Sid2Uid_recv(subreq, state, &result); TALLOC_FREE(subreq); if (any_nt_status_not_ok(status, result, &status)) { tevent_req_nterror(req, status); return; } state->uid = state->uid64; tevent_req_done(req); } NTSTATUS wb_sid2uid_recv(struct tevent_req *req, uid_t *uid) { struct wb_sid2uid_state *state = tevent_req_data( req, struct wb_sid2uid_state); NTSTATUS status; if (tevent_req_is_nterror(req, &status)) { return status; } *uid = state->uid; return NT_STATUS_OK; }