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         char *namespace;
  28         char *domname;
  29         char *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         D_NOTICE("[%s (%u)] Winbind external command GETPWNAM start.\n"
  60                  "Query username '%s'.\n",
  61                  cli->client_name,
  62                  (unsigned int)cli->pid,
  63                  request->data.username);
  64
  65         domuser = request->data.username;
  66
  67         status = normalize_name_unmap(state, domuser, &mapped_user);
  68
  69         if (NT_STATUS_IS_OK(status)
  70             || NT_STATUS_EQUAL(status, NT_STATUS_FILE_RENAMED)) {
  71                 /* normalize_name_unmapped did something */
  72                 domuser = mapped_user;
  73         }
  74
  75         ok = parse_domain_user(state,
  76                                domuser,
  77                                &state->namespace,
  78                                &state->domname,
  79                                &state->username);
  80         if (!ok) {
  81                 D_WARNING("Could not parse domain user: %s\n", domuser);
  82                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
  83                 return tevent_req_post(req, ev);
  84         }
  85
  86         subreq = wb_lookupname_send(state, ev,
  87                                     state->namespace,
  88                                     state->domname,
  89                                     state->username,
  90                                     LOOKUP_NAME_NO_NSS);
  91         if (tevent_req_nomem(subreq, req)) {
  92                 return tevent_req_post(req, ev);
  93         }
  94         tevent_req_set_callback(subreq, winbindd_getpwnam_lookupname_done,
  95                                 req);
  96         return req;
  97 }
  98
  99 static void winbindd_getpwnam_lookupname_done(struct tevent_req *subreq)
 100 {
 101         struct tevent_req *req = tevent_req_callback_data(
 102                 subreq, struct tevent_req);
 103         struct winbindd_getpwnam_state *state = tevent_req_data(
 104                 req, struct winbindd_getpwnam_state);
 105         NTSTATUS status;
 106
 107         status = wb_lookupname_recv(subreq, &state->sid, &state->type);
 108         TALLOC_FREE(subreq);
 109         if (NT_STATUS_IS_OK(status) && state->type == SID_NAME_UNKNOWN) {
 110                 status = NT_STATUS_NONE_MAPPED;
 111         }
 112         if (tevent_req_nterror(req, status)) {
 113                 return;
 114         }
 115
 116         subreq = wb_getpwsid_send(state, state->ev, &state->sid, &state->pw);
 117         if (tevent_req_nomem(subreq, req)) {
 118                 return;
 119         }
 120         tevent_req_set_callback(subreq, winbindd_getpwnam_done, req);
 121 }
 122
 123 static void winbindd_getpwnam_done(struct tevent_req *subreq)
 124 {
 125         struct tevent_req *req = tevent_req_callback_data(
 126                 subreq, struct tevent_req);
 127         NTSTATUS status;
 128
 129         status = wb_getpwsid_recv(subreq);
 130         TALLOC_FREE(subreq);
 131         if (tevent_req_nterror(req, status)) {
 132                 return;
 133         }
 134         tevent_req_done(req);
 135 }
 136
 137 NTSTATUS winbindd_getpwnam_recv(struct tevent_req *req,
 138                                 struct winbindd_response *response)
 139 {
 140         struct winbindd_getpwnam_state *state = tevent_req_data(
 141                 req, struct winbindd_getpwnam_state);
 142         NTSTATUS status;
 143
 144         if (tevent_req_is_nterror(req, &status)) {
 145                 struct dom_sid_buf buf;
 146                 D_WARNING("Could not convert sid %s: %s\n",
 147                           dom_sid_str_buf(&state->sid, &buf),
 148                           nt_errstr(status));
 149                 return status;
 150         }
 151         response->data.pw = state->pw;
 152
 153         D_NOTICE("Winbind external command GETPWNAM end.\n"
 154                  "(name:passwd:uid:gid:gecos:dir:shell)\n"
 155                  "%s:%s:%u:%u:%s:%s:%s\n",
 156                  state->pw.pw_name,
 157                  state->pw.pw_passwd,
 158                  (unsigned int)state->pw.pw_uid,
 159                  (unsigned int)state->pw.pw_gid,
 160                  state->pw.pw_gecos,
 161                  state->pw.pw_dir,
 162                  state->pw.pw_shell
 163                  );
 164
 165         return NT_STATUS_OK;
 166 }