source4/winbind/wb_cmd_list_groups.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3
   4    Command backend for wbinfo -g
   5
   6    Copyright (C) Kai Blin 2009
   7
   8    This program is free software; you can redistribute it and/or modify
   9    it under the terms of the GNU General Public License as published by
  10    the Free Software Foundation; either version 3 of the License, or
  11    (at your option) any later version.
  12
  13    This program is distributed in the hope that it will be useful,
  14    but WITHOUT ANY WARRANTY; without even the implied warranty of
  15    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16    GNU General Public License for more details.
  17
  18    You should have received a copy of the GNU General Public License
  19    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  20 */
  21
  22 #include "includes.h"
  23 #include "libcli/composite/composite.h"
  24 #include "winbind/wb_server.h"
  25 #include "smbd/service_task.h"
  26
  27 struct cmd_list_groups_state {
  28         struct composite_context *ctx;
  29         struct wbsrv_service *service;
  30
  31         struct wbsrv_domain *domain;
  32         char *domain_name;
  33         uint32_t resume_index;
  34         char *result;
  35 };
  36
  37 static void cmd_list_groups_recv_domain(struct composite_context *ctx);
  38 static void cmd_list_groups_recv_group_list(struct composite_context *ctx);
  39
  40 struct composite_context *wb_cmd_list_groups_send(TALLOC_CTX *mem_ctx,
  41                 struct wbsrv_service *service, const char *domain_name)
  42 {
  43         struct composite_context *ctx, *result;
  44         struct cmd_list_groups_state *state;
  45
  46         DEBUG(5, ("wb_cmd_list_groups_send called\n"));
  47
  48         result = composite_create(mem_ctx, service->task->event_ctx);
  49         if (!result) return NULL;
  50
  51         state = talloc(result, struct cmd_list_groups_state);
  52         if (composite_nomem(state, result)) return result;
  53
  54         state->ctx = result;
  55         result->private_data = state;
  56         state->service = service;
  57         state->resume_index = 0;
  58         state->result = talloc_strdup(state, "");
  59         if (composite_nomem(state->result, state->ctx)) return result;
  60
  61         /*FIXME: We should look up the domain in the winbind request if it is
  62          * set, not just take the primary domain. However, I want to get the
  63          * libnet logic to work first. */
  64
  65         if (domain_name && *domain_name != '\0') {
  66                 state->domain_name = talloc_strdup(state, domain_name);
  67                 if (composite_nomem(state->domain_name, state->ctx))
  68                         return result;
  69         } else {
  70                 state->domain_name = NULL;
  71         }
  72
  73         ctx = wb_sid2domain_send(state, service, service->primary_sid);
  74         if (composite_nomem(ctx, state->ctx)) return result;
  75
  76         composite_continue(state->ctx, ctx, cmd_list_groups_recv_domain, state);
  77         return result;
  78 }
  79
  80 static void cmd_list_groups_recv_domain(struct composite_context *ctx)
  81 {
  82         struct cmd_list_groups_state *state = talloc_get_type(
  83                         ctx->async.private_data, struct cmd_list_groups_state);
  84         struct wbsrv_domain *domain;
  85         struct libnet_GroupList *group_list;
  86
  87         DEBUG(5, ("cmd_list_groups_recv_domain called\n"));
  88
  89         state->ctx->status = wb_sid2domain_recv(ctx, &domain);
  90         if (!composite_is_ok(state->ctx)) return;
  91
  92         state->domain = domain;
  93
  94         /* If this is non-null, we've looked up the domain given in the winbind
  95          * request, otherwise we'll just use the default name.*/
  96         if (state->domain_name == NULL) {
  97                 state->domain_name = talloc_strdup(state,
  98                                 domain->libnet_ctx->samr.name);
  99                 if (composite_nomem(state->domain_name, state->ctx)) return;
 100         }
 101
 102         group_list = talloc(state, struct libnet_GroupList);
 103         if (composite_nomem(group_list, state->ctx)) return;
 104
 105         group_list->in.domain_name = state->domain_name;
 106
 107         /* Rafal suggested that 128 is a good number here. I don't like magic
 108          * numbers too much, but for now it'll have to do.
 109          */
 110         group_list->in.page_size = 128;
 111         group_list->in.resume_index = state->resume_index;
 112
 113         ctx = libnet_GroupList_send(domain->libnet_ctx, state, group_list,NULL);
 114
 115         composite_continue(state->ctx, ctx, cmd_list_groups_recv_group_list,
 116                         state);
 117 }
 118
 119 static void cmd_list_groups_recv_group_list(struct composite_context *ctx)
 120 {
 121         struct cmd_list_groups_state *state = talloc_get_type(
 122                         ctx->async.private_data, struct cmd_list_groups_state);
 123         struct libnet_GroupList *group_list;
 124         NTSTATUS status;
 125         int i;
 126
 127         DEBUG(5, ("cmd_list_groups_recv_group_list called\n"));
 128
 129         group_list = talloc(state, struct libnet_GroupList);
 130         if (composite_nomem(group_list, state->ctx)) return;
 131
 132         status = libnet_GroupList_recv(ctx, state, group_list);
 133
 134         /* If NTSTATUS is neither OK nor MORE_ENTRIES, something broke */
 135         if (!NT_STATUS_IS_OK(status) &&
 136              !NT_STATUS_EQUAL(status, STATUS_MORE_ENTRIES)) {
 137                 composite_error(state->ctx, status);
 138                 return;
 139         }
 140
 141         for (i = 0; i < group_list->out.count; ++i) {
 142                 DEBUG(5, ("Appending group '%s'\n",
 143                           group_list->out.groups[i].groupname));
 144                 state->result = talloc_asprintf_append_buffer(state->result,
 145                                         "%s,",
 146                                         group_list->out.groups[i].groupname);
 147         }
 148
 149         /* If the status is OK, we're finished, there's no more groups.
 150          * So we'll trim off the trailing ',' and are done.*/
 151         if (NT_STATUS_IS_OK(status)) {
 152                 int str_len = strlen(state->result);
 153                 DEBUG(5, ("list_GroupList_recv returned NT_STATUS_OK\n"));
 154                 state->result[str_len - 1] = '\0';
 155                 composite_done(state->ctx);
 156                 return;
 157         }
 158
 159         DEBUG(5, ("list_GroupList_recv returned NT_STATUS_MORE_ENTRIES\n"));
 160
 161         /* Otherwise there's more groups to get, so call out to libnet and
 162          * continue on this function here. */
 163
 164         group_list->in.domain_name = state->domain_name;
 165         /* See comment above about the page size. 128 seems like a good default.
 166          */
 167         group_list->in.page_size = 128;
 168         group_list->in.resume_index = group_list->out.resume_index;
 169
 170         ctx = libnet_GroupList_send(state->domain->libnet_ctx, state,group_list,
 171                         NULL);
 172
 173         composite_continue(state->ctx, ctx, cmd_list_groups_recv_group_list,
 174                         state);
 175 }
 176
 177 NTSTATUS wb_cmd_list_groups_recv(struct composite_context *ctx,
 178                 TALLOC_CTX *mem_ctx, uint32_t *extra_data_len,
 179                 char **extra_data)
 180 {
 181         NTSTATUS status = composite_wait(ctx);
 182
 183         DEBUG(5, ("wb_cmd_list_groups_recv called\n"));
 184
 185         if (NT_STATUS_IS_OK(status)) {
 186                 struct cmd_list_groups_state *state = talloc_get_type(
 187                         ctx->private_data, struct cmd_list_groups_state);
 188
 189                 *extra_data_len = strlen(state->result);
 190                 *extra_data = talloc_steal(mem_ctx, state->result);
 191         }
 192
 193         talloc_free(ctx);
 194         return status;
 195 }
 196
 197