source3/winbindd/wb_getpwsid.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3    async getpwsid
   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 "librpc/gen_ndr/ndr_winbind_c.h"
  23 #include "../libcli/security/security.h"
  24 #include "lib/util/string_wrappers.h"
  25
  26 struct wb_getpwsid_state {
  27         struct tevent_context *ev;
  28         struct dom_sid sid;
  29         struct wbint_userinfo *userinfo;
  30         struct winbindd_pw *pw;
  31 };
  32
  33 static void wb_getpwsid_queryuser_done(struct tevent_req *subreq);
  34
  35 struct tevent_req *wb_getpwsid_send(TALLOC_CTX *mem_ctx,
  36                                     struct tevent_context *ev,
  37                                     const struct dom_sid *user_sid,
  38                                     struct winbindd_pw *pw)
  39 {
  40         struct tevent_req *req, *subreq;
  41         struct wb_getpwsid_state *state;
  42
  43         req = tevent_req_create(mem_ctx, &state, struct wb_getpwsid_state);
  44         if (req == NULL) {
  45                 return NULL;
  46         }
  47         sid_copy(&state->sid, user_sid);
  48         state->ev = ev;
  49         state->pw = pw;
  50
  51         if (dom_sid_in_domain(&global_sid_Unix_Users, user_sid)) {
  52                 /* unmapped Unix users must be resolved locally */
  53                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
  54                 return tevent_req_post(req, ev);
  55         }
  56
  57         subreq = wb_queryuser_send(state, ev, &state->sid);
  58         if (tevent_req_nomem(subreq, req)) {
  59                 return tevent_req_post(req, ev);
  60         }
  61         tevent_req_set_callback(subreq, wb_getpwsid_queryuser_done, req);
  62         return req;
  63 }
  64
  65 static void wb_getpwsid_queryuser_done(struct tevent_req *subreq)
  66 {
  67         struct tevent_req *req = tevent_req_callback_data(
  68                 subreq, struct tevent_req);
  69         struct wb_getpwsid_state *state = tevent_req_data(
  70                 req, struct wb_getpwsid_state);
  71         struct winbindd_pw *pw = state->pw;
  72         struct wbint_userinfo *info;
  73         fstring acct_name;
  74         const char *output_username = NULL;
  75         char *mapped_name = NULL;
  76         char *tmp;
  77         NTSTATUS status;
  78
  79         status = wb_queryuser_recv(subreq, state, &state->userinfo);
  80         TALLOC_FREE(subreq);
  81         if (tevent_req_nterror(req, status)) {
  82                 return;
  83         }
  84         info = state->userinfo;
  85
  86         pw->pw_uid = info->uid;
  87         pw->pw_gid = info->primary_gid;
  88
  89         fstrcpy(acct_name, info->acct_name);
  90         if (!strlower_m(acct_name)) {
  91                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
  92                 return;
  93         }
  94
  95         /*
  96          * TODO:
  97          * This function should be called in 'idmap winbind child'. It shouldn't
  98          * be a blocking call, but for this we need to add a new function for
  99          * winbind.idl. This is a fix which can be backported for now.
 100          */
 101         status = normalize_name_map(state,
 102                                     info->domain_name,
 103                                     acct_name,
 104                                     &mapped_name);
 105         if (NT_STATUS_IS_OK(status) ||
 106             NT_STATUS_EQUAL(status, NT_STATUS_FILE_RENAMED)) {
 107                 fstrcpy(acct_name, mapped_name);
 108         }
 109         output_username = fill_domain_username_talloc(state,
 110                                                       info->domain_name,
 111                                                       acct_name,
 112                                                       true);
 113         if (output_username == NULL) {
 114                 tevent_req_nterror(req, NT_STATUS_NO_MEMORY);
 115                 return;
 116         }
 117
 118         strlcpy(pw->pw_name, output_username, sizeof(pw->pw_name));
 119
 120         strlcpy(pw->pw_gecos, info->full_name ? info->full_name : "",
 121                 sizeof(pw->pw_gecos));
 122
 123         tmp = talloc_sub_specified(
 124                 state, info->homedir, acct_name,
 125                 info->primary_group_name, info->domain_name,
 126                 pw->pw_uid, pw->pw_gid);
 127         if (tevent_req_nomem(tmp, req)) {
 128                 return;
 129         }
 130         strlcpy(pw->pw_dir, tmp, sizeof(pw->pw_dir));
 131         TALLOC_FREE(tmp);
 132
 133         tmp = talloc_sub_specified(
 134                 state, info->shell, acct_name,
 135                 info->primary_group_name, info->domain_name,
 136                 pw->pw_uid, pw->pw_gid);
 137         if (tevent_req_nomem(tmp, req)) {
 138                 return;
 139         }
 140         strlcpy(pw->pw_shell, tmp, sizeof(pw->pw_shell));
 141         TALLOC_FREE(tmp);
 142
 143         strlcpy(pw->pw_passwd, "*", sizeof(pw->pw_passwd));
 144
 145         tevent_req_done(req);
 146 }
 147
 148 NTSTATUS wb_getpwsid_recv(struct tevent_req *req)
 149 {
 150         return tevent_req_simple_recv_ntstatus(req);
 151 }