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