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 #include "libcli/security/dom_sid.h"
  24
  25 struct winbindd_getpwnam_state {
  26         struct tevent_context *ev;
  27         fstring namespace;
  28         fstring domname;
  29         fstring username;
  30         struct dom_sid sid;
  31         enum lsa_SidType type;
  32         struct winbindd_pw pw;
  33 };
  34
  35 static void winbindd_getpwnam_lookupname_done(struct tevent_req *subreq);
  36 static void winbindd_getpwnam_done(struct tevent_req *subreq);
  37
  38 struct tevent_req *winbindd_getpwnam_send(TALLOC_CTX *mem_ctx,
  39                                           struct tevent_context *ev,
  40                                           struct winbindd_cli_state *cli,
  41                                           struct winbindd_request *request)
  42 {
  43         struct tevent_req *req, *subreq;
  44         struct winbindd_getpwnam_state *state;
  45         char *domuser, *mapped_user;
  46         NTSTATUS status;
  47         bool ok;
  48
  49         req = tevent_req_create(mem_ctx, &state,
  50                                 struct winbindd_getpwnam_state);
  51         if (req == NULL) {
  52                 return NULL;
  53         }
  54         state->ev = ev;
  55
  56         /* Ensure null termination */
  57         request->data.username[sizeof(request->data.username)-1]='\0';
  58
  59         DBG_NOTICE("[%s (%u)] getpwnam %s\n",
  60                    cli->client_name,
  61                    (unsigned int)cli->pid,
  62                    request->data.username);
  63
  64         domuser = request->data.username;
  65
  66         status = normalize_name_unmap(state, domuser, &mapped_user);
  67
  68         if (NT_STATUS_IS_OK(status)
  69             || NT_STATUS_EQUAL(status, NT_STATUS_FILE_RENAMED)) {
  70                 /* normalize_name_unmapped did something */
  71                 domuser = mapped_user;
  72         }
  73
  74         ok = parse_domain_user(domuser,
  75                                state->namespace,
  76                                state->domname,
  77                                state->username);
  78         if (!ok) {
  79                 DEBUG(5, ("Could not parse domain user: %s\n", domuser));
  80                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
  81                 return tevent_req_post(req, ev);
  82         }
  83
  84         subreq = wb_lookupname_send(state, ev,
  85                                     state->namespace,
  86                                     state->domname,
  87                                     state->username,
  88                                     LOOKUP_NAME_NO_NSS);
  89         if (tevent_req_nomem(subreq, req)) {
  90                 return tevent_req_post(req, ev);
  91         }
  92         tevent_req_set_callback(subreq, winbindd_getpwnam_lookupname_done,
  93                                 req);
  94         return req;
  95 }
  96
  97 static void winbindd_getpwnam_lookupname_done(struct tevent_req *subreq)
  98 {
  99         struct tevent_req *req = tevent_req_callback_data(
 100                 subreq, struct tevent_req);
 101         struct winbindd_getpwnam_state *state = tevent_req_data(
 102                 req, struct winbindd_getpwnam_state);
 103         NTSTATUS status;
 104
 105         status = wb_lookupname_recv(subreq, &state->sid, &state->type);
 106         TALLOC_FREE(subreq);
 107         if (tevent_req_nterror(req, status)) {
 108                 return;
 109         }
 110
 111         subreq = wb_getpwsid_send(state, state->ev, &state->sid, &state->pw);
 112         if (tevent_req_nomem(subreq, req)) {
 113                 return;
 114         }
 115         tevent_req_set_callback(subreq, winbindd_getpwnam_done, req);
 116 }
 117
 118 static void winbindd_getpwnam_done(struct tevent_req *subreq)
 119 {
 120         struct tevent_req *req = tevent_req_callback_data(
 121                 subreq, struct tevent_req);
 122         NTSTATUS status;
 123
 124         status = wb_getpwsid_recv(subreq);
 125         TALLOC_FREE(subreq);
 126         if (tevent_req_nterror(req, status)) {
 127                 return;
 128         }
 129         tevent_req_done(req);
 130 }
 131
 132 NTSTATUS winbindd_getpwnam_recv(struct tevent_req *req,
 133                                 struct winbindd_response *response)
 134 {
 135         struct winbindd_getpwnam_state *state = tevent_req_data(
 136                 req, struct winbindd_getpwnam_state);
 137         NTSTATUS status;
 138
 139         if (tevent_req_is_nterror(req, &status)) {
 140                 struct dom_sid_buf buf;
 141                 DEBUG(5, ("Could not convert sid %s: %s\n",
 142                           dom_sid_str_buf(&state->sid, &buf),
 143                           nt_errstr(status)));
 144                 return status;
 145         }
 146         response->data.pw = state->pw;
 147         return NT_STATUS_OK;
 148 }