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_request *request)
  38 {
  39         struct tevent_req *req, *subreq;
  40         struct winbindd_getpwnam_state *state;
  41         char *domuser, *mapped_user;
  42         NTSTATUS status;
  43
  44         req = tevent_req_create(mem_ctx, &state,
  45                                 struct winbindd_getpwnam_state);
  46         if (req == NULL) {
  47                 return NULL;
  48         }
  49         state->ev = ev;
  50
  51         /* Ensure null termination */
  52         request->data.username[sizeof(request->data.username)-1]='\0';
  53
  54         DEBUG(3, ("getpwnam %s\n", request->data.username));
  55
  56         domuser = request->data.username;
  57
  58         status = normalize_name_unmap(state, domuser, &mapped_user);
  59
  60         if (NT_STATUS_IS_OK(status)
  61             || NT_STATUS_EQUAL(status, NT_STATUS_FILE_RENAMED)) {
  62                 /* normalize_name_unmapped did something */
  63                 domuser = mapped_user;
  64         }
  65
  66         if (!parse_domain_user(domuser, state->domname, state->username)) {
  67                 DEBUG(5, ("Could not parse domain user: %s\n", domuser));
  68                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
  69                 return tevent_req_post(req, ev);
  70         }
  71
  72         if (lp_winbind_trusted_domains_only()
  73             && strequal(state->domname, lp_workgroup())) {
  74                 DEBUG(7,("winbindd_getpwnam: My domain -- "
  75                          "rejecting getpwnam() for %s\\%s.\n",
  76                          state->domname, state->username));
  77                 tevent_req_nterror(req, NT_STATUS_NO_SUCH_USER);
  78                 return tevent_req_post(req, ev);
  79         }
  80
  81         subreq = wb_lookupname_send(state, ev, state->domname, state->username,
  82                                     LOOKUP_NAME_NO_NSS);
  83         if (tevent_req_nomem(subreq, req)) {
  84                 return tevent_req_post(req, ev);
  85         }
  86         tevent_req_set_callback(subreq, winbindd_getpwnam_lookupname_done,
  87                                 req);
  88         return req;
  89 }
  90
  91 static void winbindd_getpwnam_lookupname_done(struct tevent_req *subreq)
  92 {
  93         struct tevent_req *req = tevent_req_callback_data(
  94                 subreq, struct tevent_req);
  95         struct winbindd_getpwnam_state *state = tevent_req_data(
  96                 req, struct winbindd_getpwnam_state);
  97         NTSTATUS status;
  98
  99         status = wb_lookupname_recv(subreq, &state->sid, &state->type);
 100         TALLOC_FREE(subreq);
 101         if (!NT_STATUS_IS_OK(status)) {
 102                 tevent_req_nterror(req, status);
 103                 return;
 104         }
 105
 106         subreq = wb_getpwsid_send(state, state->ev, &state->sid, &state->pw);
 107         if (tevent_req_nomem(subreq, req)) {
 108                 return;
 109         }
 110         tevent_req_set_callback(subreq, winbindd_getpwnam_done, req);
 111 }
 112
 113 static void winbindd_getpwnam_done(struct tevent_req *subreq)
 114 {
 115         struct tevent_req *req = tevent_req_callback_data(
 116                 subreq, struct tevent_req);
 117         NTSTATUS status;
 118
 119         status = wb_getpwsid_recv(subreq);
 120         TALLOC_FREE(subreq);
 121         if (!NT_STATUS_IS_OK(status)) {
 122                 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 }