source3/winbindd/winbindd_getpwnam.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3    async implementation of WINBINDD_GETPWNAM
   4    Copyright (C) Volker Lendecke 2009
   5
   6    This program is free software; you can redistribute it and/or modify
   7    it under the terms of the GNU General Public License as published by
   8    the Free Software Foundation; either version 3 of the License, or
   9    (at your option) any later version.
  10
  11    This program is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14    GNU General Public License for more details.
  15
  16    You should have received a copy of the GNU General Public License
  17    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  18 */
  19
  20 #include "includes.h"
  21 #include "winbindd.h"
  22
  23 struct winbindd_getpwnam_state {
  24         struct tevent_context *ev;
  25         fstring domname;
  26         fstring username;
  27         struct dom_sid sid;
  28         enum lsa_SidType type;
  29         struct winbindd_pw pw;
  30 };
  31
  32 static void winbindd_getpwnam_lookupname_done(struct tevent_req *subreq);
  33 static void winbindd_getpwnam_done(struct tevent_req *subreq);
  34
  35 struct tevent_req *winbindd_getpwnam_send(TALLOC_CTX *mem_ctx,
  36                                           struct tevent_context *ev,
  37                                           struct winbindd_cli_state *cli,
  38                                           struct winbindd_request *request)
  39 {
  40         struct tevent_req *req, *subreq;
  41         struct winbindd_getpwnam_state *state;
  42         char *domuser, *mapped_user;
  43         NTSTATUS status;
  44
  45         req = tevent_req_create(mem_ctx, &state,
  46                                 struct winbindd_getpwnam_state);
  47         if (req == NULL) {
  48                 return NULL;
  49         }
  50         state->ev = ev;
  51
  52         /* Ensure null termination */
  53         request->data.username[sizeof(request->data.username)-1]='\0';
  54
  55         DEBUG(3, ("getpwnam %s\n", request->data.username));
  56
  57         domuser = request->data.username;
  58
  59         status = normalize_name_unmap(state, domuser, &mapped_user);
  60
  61         if (NT_STATUS_IS_OK(status)
  62             || NT_STATUS_EQUAL(status, NT_STATUS_FILE_RENAMED)) {
  63                 /* normalize_name_unmapped did something */
  64                 domuser = mapped_user;
  65         }
  66
  67         if (!parse_domain_user(domuser, state->domname, state->username)) {
  68                 DEBUG(5, ("Could not parse domain user: %s\n", domuser));
  69                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
  70                 return tevent_req_post(req, ev);
  71         }
  72
  73         if (lp_winbind_trusted_domains_only()
  74             && strequal(state->domname, lp_workgroup())) {
  75                 DEBUG(7,("winbindd_getpwnam: My domain -- "
  76                          "rejecting getpwnam() for %s\\%s.\n",
  77                          state->domname, state->username));
  78                 tevent_req_nterror(req, NT_STATUS_NO_SUCH_USER);
  79                 return tevent_req_post(req, ev);
  80         }
  81
  82         subreq = wb_lookupname_send(state, ev, state->domname, state->username,
  83                                     LOOKUP_NAME_NO_NSS);
  84         if (tevent_req_nomem(subreq, req)) {
  85                 return tevent_req_post(req, ev);
  86         }
  87         tevent_req_set_callback(subreq, winbindd_getpwnam_lookupname_done,
  88                                 req);
  89         return req;
  90 }
  91
  92 static void winbindd_getpwnam_lookupname_done(struct tevent_req *subreq)
  93 {
  94         struct tevent_req *req = tevent_req_callback_data(
  95                 subreq, struct tevent_req);
  96         struct winbindd_getpwnam_state *state = tevent_req_data(
  97                 req, struct winbindd_getpwnam_state);
  98         NTSTATUS status;
  99
 100         status = wb_lookupname_recv(subreq, &state->sid, &state->type);
 101         TALLOC_FREE(subreq);
 102         if (!NT_STATUS_IS_OK(status)) {
 103                 tevent_req_nterror(req, status);
 104                 return;
 105         }
 106
 107         subreq = wb_getpwsid_send(state, state->ev, &state->sid, &state->pw);
 108         if (tevent_req_nomem(subreq, req)) {
 109                 return;
 110         }
 111         tevent_req_set_callback(subreq, winbindd_getpwnam_done, req);
 112 }
 113
 114 static void winbindd_getpwnam_done(struct tevent_req *subreq)
 115 {
 116         struct tevent_req *req = tevent_req_callback_data(
 117                 subreq, struct tevent_req);
 118         NTSTATUS status;
 119
 120         status = wb_getpwsid_recv(subreq);
 121         TALLOC_FREE(subreq);
 122         if (!NT_STATUS_IS_OK(status)) {
 123                 tevent_req_nterror(req, status);
 124                 return;
 125         }
 126         tevent_req_done(req);
 127 }
 128
 129 NTSTATUS winbindd_getpwnam_recv(struct tevent_req *req,
 130                                 struct winbindd_response *response)
 131 {
 132         struct winbindd_getpwnam_state *state = tevent_req_data(
 133                 req, struct winbindd_getpwnam_state);
 134         NTSTATUS status;
 135
 136         if (tevent_req_is_nterror(req, &status)) {
 137                 DEBUG(5, ("Could not convert sid %s: %s\n",
 138                           sid_string_dbg(&state->sid), nt_errstr(status)));
 139                 return status;
 140         }
 141         response->data.pw = state->pw;
 142         return NT_STATUS_OK;
 143 }