source3/winbindd/winbindd_show_sequence.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3    async implementation of WINBINDD_SHOW_SEQUENCE
   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
  23 struct winbindd_show_sequence_state {
  24         bool one_domain;
  25         /* One domain */
  26         uint32_t seqnum;
  27
  28         /* All domains */
  29         int num_domains;
  30         NTSTATUS *stati;
  31         struct winbindd_domain **domains;
  32         uint32_t *seqnums;
  33 };
  34
  35 static void winbindd_show_sequence_done_one(struct tevent_req *subreq);
  36 static void winbindd_show_sequence_done_all(struct tevent_req *subreq);
  37
  38 struct tevent_req *winbindd_show_sequence_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_show_sequence_state *state;
  45
  46         req = tevent_req_create(mem_ctx, &state,
  47                                 struct winbindd_show_sequence_state);
  48         if (req == NULL) {
  49                 return NULL;
  50         }
  51         state->one_domain = false;
  52         state->domains = NULL;
  53         state->stati = NULL;
  54         state->seqnums = NULL;
  55
  56         /* Ensure null termination */
  57         request->domain_name[sizeof(request->domain_name)-1]='\0';
  58
  59         DEBUG(3, ("show_sequence %s\n", request->domain_name));
  60
  61         if (request->domain_name[0] != '\0') {
  62                 struct winbindd_domain *domain;
  63
  64                 state->one_domain = true;
  65
  66                 domain = find_domain_from_name_noinit(
  67                         request->domain_name);
  68                 if (domain == NULL) {
  69                         tevent_req_nterror(req, NT_STATUS_NO_SUCH_DOMAIN);
  70                         return tevent_req_post(req, ev);
  71                 }
  72
  73                 subreq = wb_seqnum_send(state, ev, domain);
  74                 if (tevent_req_nomem(subreq, req)) {
  75                         return tevent_req_post(req, ev);
  76                 }
  77                 tevent_req_set_callback(
  78                         subreq, winbindd_show_sequence_done_one, req);
  79                 return req;
  80         }
  81
  82         subreq = wb_seqnums_send(state, ev);
  83         if (tevent_req_nomem(subreq, req)) {
  84                 return tevent_req_post(req, ev);
  85         }
  86         tevent_req_set_callback(subreq, winbindd_show_sequence_done_all, req);
  87         return req;
  88 }
  89
  90 static void winbindd_show_sequence_done_one(struct tevent_req *subreq)
  91 {
  92         struct tevent_req *req = tevent_req_callback_data(
  93                 subreq, struct tevent_req);
  94         struct winbindd_show_sequence_state *state = tevent_req_data(
  95                 req, struct winbindd_show_sequence_state);
  96         NTSTATUS status;
  97
  98         status = wb_seqnum_recv(subreq, &state->seqnum);
  99         TALLOC_FREE(subreq);
 100         if (tevent_req_nterror(req, status)) {
 101                 return;
 102         }
 103         tevent_req_done(req);
 104 }
 105
 106 static void winbindd_show_sequence_done_all(struct tevent_req *subreq)
 107 {
 108         struct tevent_req *req = tevent_req_callback_data(
 109                 subreq, struct tevent_req);
 110         struct winbindd_show_sequence_state *state = tevent_req_data(
 111                 req, struct winbindd_show_sequence_state);
 112         NTSTATUS status;
 113
 114         status = wb_seqnums_recv(subreq, state, &state->num_domains,
 115                                  &state->domains, &state->stati,
 116                                  &state->seqnums);
 117         TALLOC_FREE(subreq);
 118         if (tevent_req_nterror(req, status)) {
 119                 return;
 120         }
 121         tevent_req_done(req);
 122 }
 123
 124 NTSTATUS winbindd_show_sequence_recv(struct tevent_req *req,
 125                                      struct winbindd_response *response)
 126 {
 127         struct winbindd_show_sequence_state *state = tevent_req_data(
 128                 req, struct winbindd_show_sequence_state);
 129         NTSTATUS status;
 130         char *extra_data;
 131         int i;
 132
 133         if (tevent_req_is_nterror(req, &status)) {
 134                 return status;
 135         }
 136
 137         if (state->one_domain) {
 138                 response->data.sequence_number = state->seqnum;
 139                 return NT_STATUS_OK;
 140         }
 141
 142         extra_data = talloc_strdup(response, "");
 143         if (extra_data == NULL) {
 144                 return NT_STATUS_NO_MEMORY;
 145         }
 146
 147         for (i=0; i<state->num_domains; i++) {
 148                 if (!NT_STATUS_IS_OK(state->stati[i])
 149                     || (state->seqnums[i] == DOM_SEQUENCE_NONE)) {
 150                         extra_data = talloc_asprintf_append_buffer(
 151                                 extra_data, "%s : DISCONNECTED\n",
 152                                 state->domains[i]->name);
 153                 } else {
 154                         extra_data = talloc_asprintf_append_buffer(
 155                                 extra_data, "%s : %d\n",
 156                                 state->domains[i]->name,
 157                                 (int)state->seqnums[i]);
 158                 }
 159                 if (extra_data == NULL) {
 160                         return NT_STATUS_NO_MEMORY;
 161                 }
 162         }
 163
 164         response->extra_data.data = extra_data;
 165         response->length += talloc_get_size(extra_data);
 166         return NT_STATUS_OK;
 167 }