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 #include "passdb/lookup_sid.h" /* only for LOOKUP_NAME_NO_NSS flag */
  23
  24 struct winbindd_getpwnam_state {
  25         struct tevent_context *ev;
  26         fstring domname;
  27         fstring username;
  28         struct dom_sid sid;
  29         enum lsa_SidType type;
  30         struct winbindd_pw pw;
  31 };
  32
  33 static void winbindd_getpwnam_lookupname_done(struct tevent_req *subreq);
  34 static void winbindd_getpwnam_done(struct tevent_req *subreq);
  35
  36 struct tevent_req *winbindd_getpwnam_send(TALLOC_CTX *mem_ctx,
  37                                           struct tevent_context *ev,
  38                                           struct winbindd_cli_state *cli,
  39                                           struct winbindd_request *request)
  40 {
  41         struct tevent_req *req, *subreq;
  42         struct winbindd_getpwnam_state *state;
  43         char *domuser, *mapped_user;
  44         NTSTATUS status;
  45
  46         req = tevent_req_create(mem_ctx, &state,
  47                                 struct winbindd_getpwnam_state);
  48         if (req == NULL) {
  49                 return NULL;
  50         }
  51         state->ev = ev;
  52
  53         /* Ensure null termination */
  54         request->data.username[sizeof(request->data.username)-1]='\0';
  55
  56         DEBUG(3, ("getpwnam %s\n", request->data.username));
  57
  58         domuser = request->data.username;
  59
  60         status = normalize_name_unmap(state, domuser, &mapped_user);
  61
  62         if (NT_STATUS_IS_OK(status)
  63             || NT_STATUS_EQUAL(status, NT_STATUS_FILE_RENAMED)) {
  64                 /* normalize_name_unmapped did something */
  65                 domuser = mapped_user;
  66         }
  67
  68         if (!parse_domain_user(domuser, state->domname, state->username)) {
  69                 DEBUG(5, ("Could not parse domain user: %s\n", domuser));
  70                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
  71                 return tevent_req_post(req, ev);
  72         }
  73
  74         if (lp_winbind_trusted_domains_only()
  75             && strequal(state->domname, lp_workgroup())) {
  76                 DEBUG(7,("winbindd_getpwnam: My domain -- "
  77                          "rejecting getpwnam() for %s\\%s.\n",
  78                          state->domname, state->username));
  79                 tevent_req_nterror(req, NT_STATUS_NO_SUCH_USER);
  80                 return tevent_req_post(req, ev);
  81         }
  82
  83         subreq = wb_lookupname_send(state, ev, state->domname, state->username,
  84                                     LOOKUP_NAME_NO_NSS);
  85         if (tevent_req_nomem(subreq, req)) {
  86                 return tevent_req_post(req, ev);
  87         }
  88         tevent_req_set_callback(subreq, winbindd_getpwnam_lookupname_done,
  89                                 req);
  90         return req;
  91 }
  92
  93 static void winbindd_getpwnam_lookupname_done(struct tevent_req *subreq)
  94 {
  95         struct tevent_req *req = tevent_req_callback_data(
  96                 subreq, struct tevent_req);
  97         struct winbindd_getpwnam_state *state = tevent_req_data(
  98                 req, struct winbindd_getpwnam_state);
  99         NTSTATUS status;
 100
 101         status = wb_lookupname_recv(subreq, &state->sid, &state->type);
 102         TALLOC_FREE(subreq);
 103         if (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 (tevent_req_nterror(req, status)) {
 123                 return;
 124         }
 125         tevent_req_done(req);
 126 }
 127
 128 NTSTATUS winbindd_getpwnam_recv(struct tevent_req *req,
 129                                 struct winbindd_response *response)
 130 {
 131         struct winbindd_getpwnam_state *state = tevent_req_data(
 132                 req, struct winbindd_getpwnam_state);
 133         NTSTATUS status;
 134
 135         if (tevent_req_is_nterror(req, &status)) {
 136                 DEBUG(5, ("Could not convert sid %s: %s\n",
 137                           sid_string_dbg(&state->sid), nt_errstr(status)));
 138                 return status;
 139         }
 140         response->data.pw = state->pw;
 141         return NT_STATUS_OK;
 142 }