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/cli_wbint.h"
  23
  24 struct wb_getpwsid_state {
  25         struct winbindd_domain *user_domain;
  26         struct tevent_context *ev;
  27         struct dom_sid sid;
  28         struct winbind_userinfo *userinfo;
  29         struct winbindd_pw *pw;
  30 };
  31
  32 static void wb_getpwsid_queryuser_done(struct tevent_req *subreq);
  33 static void wb_getpwsid_lookupsid_done(struct tevent_req *subreq);
  34 static void wb_getpwsid_sid2uid_done(struct tevent_req *subreq);
  35 static void wb_getpwsid_sid2gid_done(struct tevent_req *subreq);
  36
  37 struct tevent_req *wb_getpwsid_send(TALLOC_CTX *mem_ctx,
  38                                     struct tevent_context *ev,
  39                                     const struct dom_sid *user_sid,
  40                                     struct winbindd_pw *pw)
  41 {
  42         struct tevent_req *req, *subreq;
  43         struct wb_getpwsid_state *state;
  44
  45         req = tevent_req_create(mem_ctx, &state, struct wb_getpwsid_state);
  46         if (req == NULL) {
  47                 return NULL;
  48         }
  49         sid_copy(&state->sid, user_sid);
  50         state->ev = ev;
  51         state->pw = pw;
  52
  53         state->user_domain = find_domain_from_sid_noinit(user_sid);
  54         if (state->user_domain == NULL) {
  55                 tevent_req_nterror(req, NT_STATUS_NO_SUCH_USER);
  56                 return tevent_req_post(req, ev);
  57         }
  58
  59         subreq = wb_queryuser_send(state, ev, &state->sid);
  60         if (tevent_req_nomem(subreq, req)) {
  61                 return tevent_req_post(req, ev);
  62         }
  63         tevent_req_set_callback(subreq, wb_getpwsid_queryuser_done, req);
  64         return req;
  65 }
  66
  67 static void wb_getpwsid_queryuser_done(struct tevent_req *subreq)
  68 {
  69         struct tevent_req *req = tevent_req_callback_data(
  70                 subreq, struct tevent_req);
  71         struct wb_getpwsid_state *state = tevent_req_data(
  72                 req, struct wb_getpwsid_state);
  73         NTSTATUS status;
  74
  75         status = wb_queryuser_recv(subreq, state, &state->userinfo);
  76         TALLOC_FREE(subreq);
  77         if (!NT_STATUS_IS_OK(status)) {
  78                 tevent_req_nterror(req, status);
  79                 return;
  80         }
  81
  82         if ((state->userinfo->acct_name != NULL)
  83             && (state->userinfo->acct_name[0] != '\0')) {
  84                 /*
  85                  * QueryUser got us a name, let's got directly to the
  86                  * sid2uid step
  87                  */
  88                 subreq = wb_sid2uid_send(state, state->ev,
  89                                          &state->userinfo->user_sid);
  90                 if (tevent_req_nomem(subreq, req)) {
  91                         return;
  92                 }
  93                 tevent_req_set_callback(subreq, wb_getpwsid_sid2uid_done, req);
  94                 return;
  95         }
  96
  97         /*
  98          * QueryUser didn't get us a name, do it via LSA.
  99          */
 100         subreq = wb_lookupsid_send(state, state->ev,
 101                                    &state->userinfo->user_sid);
 102         if (tevent_req_nomem(subreq, req)) {
 103                 return;
 104         }
 105         tevent_req_set_callback(subreq, wb_getpwsid_lookupsid_done, req);
 106 }
 107
 108 static void wb_getpwsid_lookupsid_done(struct tevent_req *subreq)
 109 {
 110         struct tevent_req *req = tevent_req_callback_data(
 111                 subreq, struct tevent_req);
 112         struct wb_getpwsid_state *state = tevent_req_data(
 113                 req, struct wb_getpwsid_state);
 114         NTSTATUS status;
 115         enum lsa_SidType type;
 116         const char *domain;
 117
 118         status = wb_lookupsid_recv(subreq, state->userinfo, &type, &domain,
 119                                    &state->userinfo->acct_name);
 120         TALLOC_FREE(subreq);
 121         if (!NT_STATUS_IS_OK(status)) {
 122                 tevent_req_nterror(req, status);
 123                 return;
 124         }
 125         subreq = wb_sid2uid_send(state, state->ev, &state->userinfo->user_sid);
 126         if (tevent_req_nomem(subreq, req)) {
 127                 return;
 128         }
 129         tevent_req_set_callback(subreq, wb_getpwsid_sid2uid_done, req);
 130 }
 131
 132 static void wb_getpwsid_sid2uid_done(struct tevent_req *subreq)
 133 {
 134         struct tevent_req *req = tevent_req_callback_data(
 135                 subreq, struct tevent_req);
 136         struct wb_getpwsid_state *state = tevent_req_data(
 137                 req, struct wb_getpwsid_state);
 138         NTSTATUS status;
 139
 140         status = wb_sid2uid_recv(subreq, &state->pw->pw_uid);
 141         TALLOC_FREE(subreq);
 142         if (!NT_STATUS_IS_OK(status)) {
 143                 tevent_req_nterror(req, status);
 144                 return;
 145         }
 146         subreq = wb_sid2gid_send(state, state->ev,
 147                                  &state->userinfo->group_sid);
 148         if (tevent_req_nomem(subreq, req)) {
 149                 return;
 150         }
 151         tevent_req_set_callback(subreq, wb_getpwsid_sid2gid_done, req);
 152 }
 153
 154 static void wb_getpwsid_sid2gid_done(struct tevent_req *subreq)
 155 {
 156         struct tevent_req *req = tevent_req_callback_data(
 157                 subreq, struct tevent_req);
 158         struct wb_getpwsid_state *state = tevent_req_data(
 159                 req, struct wb_getpwsid_state);
 160         NTSTATUS status;
 161         char *username;
 162         char *mapped_name;
 163
 164         status = wb_sid2gid_recv(subreq, &state->pw->pw_gid);
 165         TALLOC_FREE(subreq);
 166         if (!NT_STATUS_IS_OK(status)) {
 167                 tevent_req_nterror(req, status);
 168                 return;
 169         }
 170
 171         username = talloc_strdup_lower(state, state->userinfo->acct_name);
 172         if (tevent_req_nomem(username, req)) {
 173                 return;
 174         }
 175
 176         status = normalize_name_map(state, state->user_domain, username,
 177                                     &mapped_name);
 178
 179         if (NT_STATUS_IS_OK(status)
 180             || NT_STATUS_EQUAL(status, NT_STATUS_FILE_RENAMED)) {
 181                 /*
 182                  * normalize_name_map did something
 183                  */
 184                 fstrcpy(state->pw->pw_name, mapped_name);
 185                 TALLOC_FREE(mapped_name);
 186         } else {
 187                 fill_domain_username(state->pw->pw_name,
 188                                      state->user_domain->name,
 189                                      username, True);
 190         }
 191         fstrcpy(state->pw->pw_passwd, "*");
 192         fstrcpy(state->pw->pw_gecos, state->userinfo->full_name);
 193
 194         if (!fillup_pw_field(lp_template_homedir(), username,
 195                              state->user_domain->name, state->pw->pw_uid,
 196                              state->pw->pw_gid, state->userinfo->homedir,
 197                              state->pw->pw_dir)) {
 198                 DEBUG(5, ("Could not compose homedir\n"));
 199                 tevent_req_nterror(req, NT_STATUS_NO_MEMORY);
 200                 return;
 201         }
 202
 203         if (!fillup_pw_field(lp_template_shell(), state->pw->pw_name,
 204                              state->user_domain->name, state->pw->pw_uid,
 205                              state->pw->pw_gid, state->userinfo->shell,
 206                              state->pw->pw_shell)) {
 207                 DEBUG(5, ("Could not compose shell\n"));
 208                 tevent_req_nterror(req, NT_STATUS_NO_MEMORY);
 209                 return;
 210         }
 211
 212         tevent_req_done(req);
 213 }
 214
 215 NTSTATUS wb_getpwsid_recv(struct tevent_req *req)
 216 {
 217         NTSTATUS status;
 218
 219         if (tevent_req_is_nterror(req, &status)) {
 220                 return status;
 221         }
 222         return NT_STATUS_OK;
 223 }