source3/winbindd/winbindd_lookuprids.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3    async implementation of WINBINDD_LOOKUPRIDS
   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_wbint_c.h"
  23 #include "../libcli/security/security.h"
  24
  25 struct winbindd_lookuprids_state {
  26         struct tevent_context *ev;
  27         struct dom_sid domain_sid;
  28         const char *domain_name;
  29         struct wbint_RidArray rids;
  30         struct wbint_Principals names;
  31 };
  32
  33 static bool parse_ridlist(TALLOC_CTX *mem_ctx, char *ridstr,
  34                           uint32_t **prids, uint32_t *pnum_rids);
  35
  36 static void winbindd_lookuprids_done(struct tevent_req *subreq);
  37
  38 struct tevent_req *winbindd_lookuprids_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_lookuprids_state *state;
  45         struct winbindd_domain *domain;
  46
  47         req = tevent_req_create(mem_ctx, &state,
  48                                 struct winbindd_lookuprids_state);
  49         if (req == NULL) {
  50                 return NULL;
  51         }
  52         state->ev = ev;
  53
  54         /* Ensure null termination */
  55         request->data.sid[sizeof(request->data.sid)-1]='\0';
  56
  57         DEBUG(3, ("lookuprids (%s)\n", request->data.sid));
  58
  59         if (!string_to_sid(&state->domain_sid, request->data.sid)) {
  60                 DEBUG(5, ("%s not a SID\n", request->data.sid));
  61                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
  62                 return tevent_req_post(req, ev);
  63         }
  64
  65         domain = find_lookup_domain_from_sid(&state->domain_sid);
  66         if (domain == NULL) {
  67                 DEBUG(5, ("Domain for sid %s not found\n",
  68                           sid_string_dbg(&state->domain_sid)));
  69                 tevent_req_nterror(req, NT_STATUS_NO_SUCH_DOMAIN);
  70                 return tevent_req_post(req, ev);
  71         }
  72
  73         if (request->extra_data.data[request->extra_len-1] != '\0') {
  74                 DEBUG(5, ("extra_data not 0-terminated\n"));
  75                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
  76                 return tevent_req_post(req, ev);
  77         }
  78
  79         if (!parse_ridlist(state, request->extra_data.data,
  80                            &state->rids.rids, &state->rids.num_rids)) {
  81                 DEBUG(5, ("parse_ridlist failed\n"));
  82                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
  83                 return tevent_req_post(req, ev);
  84         }
  85
  86         subreq = dcerpc_wbint_LookupRids_send(
  87                 state, ev, dom_child_handle(domain), &state->domain_sid,
  88                 &state->rids, &state->domain_name, &state->names);
  89         if (tevent_req_nomem(subreq, req)) {
  90                 return tevent_req_post(req, ev);
  91         }
  92         tevent_req_set_callback(subreq, winbindd_lookuprids_done, req);
  93         return req;
  94 }
  95
  96 static void winbindd_lookuprids_done(struct tevent_req *subreq)
  97 {
  98         struct tevent_req *req = tevent_req_callback_data(
  99                 subreq, struct tevent_req);
 100         struct winbindd_lookuprids_state *state = tevent_req_data(
 101                 req, struct winbindd_lookuprids_state);
 102         NTSTATUS status, result;
 103
 104         status = dcerpc_wbint_LookupRids_recv(subreq, state, &result);
 105         TALLOC_FREE(subreq);
 106         if (any_nt_status_not_ok(status, result, &status)) {
 107                 tevent_req_nterror(req, status);
 108                 return;
 109         }
 110         tevent_req_done(req);
 111 }
 112
 113 NTSTATUS winbindd_lookuprids_recv(struct tevent_req *req,
 114                                   struct winbindd_response *response)
 115 {
 116         struct winbindd_lookuprids_state *state = tevent_req_data(
 117                 req, struct winbindd_lookuprids_state);
 118         NTSTATUS status;
 119         char *result;
 120         int i;
 121
 122         if (tevent_req_is_nterror(req, &status)) {
 123                 DEBUG(5, ("Lookuprids failed: %s\n",nt_errstr(status)));
 124                 return status;
 125         }
 126
 127         result = talloc_strdup(response, "");
 128         if (result == NULL) {
 129                 return NT_STATUS_NO_MEMORY;
 130         }
 131
 132         for (i=0; i<state->names.num_principals; i++) {
 133                 struct wbint_Principal *p = &state->names.principals[i];
 134
 135                 result = talloc_asprintf_append_buffer(
 136                         result, "%d %s\n", (int)p->type, p->name);
 137                 if (result == NULL) {
 138                         return NT_STATUS_NO_MEMORY;
 139                 }
 140         }
 141
 142         fstrcpy(response->data.domain_name, state->domain_name);
 143         response->extra_data.data = result;
 144         response->length += talloc_get_size(result);
 145         return NT_STATUS_OK;
 146 }
 147
 148 static bool parse_ridlist(TALLOC_CTX *mem_ctx, char *ridstr,
 149                           uint32_t **prids, uint32_t *pnum_rids)
 150 {
 151         uint32_t i, num_rids;
 152         uint32_t *rids;
 153         char *p;
 154
 155         if (ridstr == NULL) {
 156                 return false;
 157         }
 158
 159         p = ridstr;
 160         num_rids = 0;
 161
 162         /* count rids */
 163
 164         while ((p = strchr(p, '\n')) != NULL) {
 165                 p += 1;
 166                 num_rids += 1;
 167         }
 168
 169         if (num_rids == 0) {
 170                 *pnum_rids = 0;
 171                 *prids = NULL;
 172                 return true;
 173         }
 174
 175         rids = talloc_array(mem_ctx, uint32_t, num_rids);
 176         if (rids == NULL) {
 177                 return false;
 178         }
 179
 180         p = ridstr;
 181
 182         for (i=0; i<num_rids; i++) {
 183                 char *q;
 184                 rids[i] = strtoul(p, &q, 10);
 185                 if (*q != '\n') {
 186                         DEBUG(0, ("Got invalid ridstr: %s\n", p));
 187                         return false;
 188                 }
 189                 p = q+1;
 190         }
 191
 192         *pnum_rids = num_rids;
 193         *prids = rids;
 194         return true;
 195 }