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 #include "source3/lib/substitute.h"
  26
  27 struct wb_getpwsid_state {
  28         struct tevent_context *ev;
  29         struct dom_sid sid;
  30         struct wbint_userinfo *userinfo;
  31         struct winbindd_pw *pw;
  32 };
  33
  34 static void wb_getpwsid_queryuser_done(struct tevent_req *subreq);
  35
  36 struct tevent_req *wb_getpwsid_send(TALLOC_CTX *mem_ctx,
  37                                     struct tevent_context *ev,
  38                                     const struct dom_sid *user_sid,
  39                                     struct winbindd_pw *pw)
  40 {
  41         struct tevent_req *req, *subreq;
  42         struct wb_getpwsid_state *state;
  43
  44         req = tevent_req_create(mem_ctx, &state, struct wb_getpwsid_state);
  45         if (req == NULL) {
  46                 return NULL;
  47         }
  48         sid_copy(&state->sid, user_sid);
  49         state->ev = ev;
  50         state->pw = pw;
  51
  52         if (dom_sid_in_domain(&global_sid_Unix_Users, user_sid)) {
  53                 /* unmapped Unix users must be resolved locally */
  54                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
  55                 return tevent_req_post(req, ev);
  56         }
  57
  58         subreq = wb_queryuser_send(state, ev, &state->sid);
  59         if (tevent_req_nomem(subreq, req)) {
  60                 return tevent_req_post(req, ev);
  61         }
  62         tevent_req_set_callback(subreq, wb_getpwsid_queryuser_done, req);
  63         return req;
  64 }
  65
  66 static void wb_getpwsid_queryuser_done(struct tevent_req *subreq)
  67 {
  68         struct tevent_req *req = tevent_req_callback_data(
  69                 subreq, struct tevent_req);
  70         struct wb_getpwsid_state *state = tevent_req_data(
  71                 req, struct wb_getpwsid_state);
  72         struct winbindd_pw *pw = state->pw;
  73         struct wbint_userinfo *info;
  74         fstring acct_name;
  75         const char *output_username = NULL;
  76         char *mapped_name = NULL;
  77         char *tmp;
  78         NTSTATUS status;
  79
  80         status = wb_queryuser_recv(subreq, state, &state->userinfo);
  81         TALLOC_FREE(subreq);
  82         if (tevent_req_nterror(req, status)) {
  83                 return;
  84         }
  85         info = state->userinfo;
  86
  87         pw->pw_uid = info->uid;
  88         pw->pw_gid = info->primary_gid;
  89
  90         fstrcpy(acct_name, info->acct_name);
  91         if (!strlower_m(acct_name)) {
  92                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
  93                 return;
  94         }
  95
  96         /*
  97          * TODO:
  98          * This function should be called in 'idmap winbind child'. It shouldn't
  99          * be a blocking call, but for this we need to add a new function for
 100          * winbind.idl. This is a fix which can be backported for now.
 101          */
 102         status = normalize_name_map(state,
 103                                     info->domain_name,
 104                                     acct_name,
 105                                     &mapped_name);
 106         if (NT_STATUS_IS_OK(status) ||
 107             NT_STATUS_EQUAL(status, NT_STATUS_FILE_RENAMED)) {
 108                 fstrcpy(acct_name, mapped_name);
 109         }
 110         output_username = fill_domain_username_talloc(state,
 111                                                       info->domain_name,
 112                                                       acct_name,
 113                                                       true);
 114         if (output_username == NULL) {
 115                 tevent_req_nterror(req, NT_STATUS_NO_MEMORY);
 116                 return;
 117         }
 118
 119         strlcpy(pw->pw_name, output_username, sizeof(pw->pw_name));
 120
 121         strlcpy(pw->pw_gecos, info->full_name ? info->full_name : "",
 122                 sizeof(pw->pw_gecos));
 123
 124         tmp = talloc_sub_specified(
 125                 state, info->homedir, acct_name,
 126                 info->primary_group_name, info->domain_name,
 127                 pw->pw_uid, pw->pw_gid);
 128         if (tevent_req_nomem(tmp, req)) {
 129                 return;
 130         }
 131         strlcpy(pw->pw_dir, tmp, sizeof(pw->pw_dir));
 132         TALLOC_FREE(tmp);
 133
 134         tmp = talloc_sub_specified(
 135                 state, info->shell, acct_name,
 136                 info->primary_group_name, info->domain_name,
 137                 pw->pw_uid, pw->pw_gid);
 138         if (tevent_req_nomem(tmp, req)) {
 139                 return;
 140         }
 141         strlcpy(pw->pw_shell, tmp, sizeof(pw->pw_shell));
 142         TALLOC_FREE(tmp);
 143
 144         strlcpy(pw->pw_passwd, "*", sizeof(pw->pw_passwd));
 145
 146         tevent_req_done(req);
 147 }
 148
 149 NTSTATUS wb_getpwsid_recv(struct tevent_req *req)
 150 {
 151         return tevent_req_simple_recv_ntstatus(req);
 152 }