source4/winbind/wb_cmd_list_users.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3
   4    Command backend for wbinfo -u
   5
   6    Copyright (C) Kai Blin 2007
   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 "winbind/wb_async_helpers.h"
  26 #include "winbind/wb_helper.h"
  27 #include "smbd/service_task.h"
  28 #include "libnet/libnet_proto.h"
  29
  30 struct cmd_list_users_state {
  31         struct composite_context *ctx;
  32         struct wbsrv_service *service;
  33
  34         struct wbsrv_domain *domain;
  35         char *domain_name;
  36         uint32_t resume_index;
  37         char *result;
  38 };
  39
  40 static void cmd_list_users_recv_domain(struct composite_context *ctx);
  41 static void cmd_list_users_recv_user_list(struct composite_context *ctx);
  42
  43 struct composite_context *wb_cmd_list_users_send(TALLOC_CTX *mem_ctx,
  44                 struct wbsrv_service *service, const char *domain_name)
  45 {
  46         struct composite_context *ctx, *result;
  47         struct cmd_list_users_state *state;
  48
  49         DEBUG(5, ("wb_cmd_list_users_send called\n"));
  50
  51         result = composite_create(mem_ctx, service->task->event_ctx);
  52         if (!result) return NULL;
  53
  54         state = talloc(result, struct cmd_list_users_state);
  55         if (composite_nomem(state, result)) return result;
  56
  57         state->ctx = result;
  58         result->private_data = state;
  59         state->service = service;
  60         state->resume_index = 0;
  61         state->result = talloc_strdup(state, "");
  62         if (composite_nomem(state->result, state->ctx)) return result;
  63
  64         /*FIXME: We should look up the domain in the winbind request if it is
  65          * set, not just take the primary domain. However, I want to get the
  66          * libnet logic to work first. */
  67
  68         if (domain_name && *domain_name != '\0') {
  69                 state->domain_name = talloc_strdup(state, domain_name);
  70                 if (composite_nomem(state->domain_name, state->ctx))
  71                         return result;
  72         } else {
  73                 state->domain_name = NULL;
  74         }
  75
  76         ctx = wb_sid2domain_send(state, service, service->primary_sid);
  77         if (composite_nomem(ctx, state->ctx)) return result;
  78
  79         composite_continue(state->ctx, ctx, cmd_list_users_recv_domain, state);
  80         return result;
  81 }
  82
  83 static void cmd_list_users_recv_domain(struct composite_context *ctx)
  84 {
  85         struct cmd_list_users_state *state = talloc_get_type(
  86                         ctx->async.private_data, struct cmd_list_users_state);
  87         struct wbsrv_domain *domain;
  88         struct libnet_UserList *user_list;
  89
  90         DEBUG(5, ("cmd_list_users_recv_domain called\n"));
  91
  92         state->ctx->status = wb_sid2domain_recv(ctx, &domain);
  93         if (!composite_is_ok(state->ctx)) return;
  94
  95         state->domain = domain;
  96
  97         /* If this is non-null, we've looked up the domain given in the winbind
  98          * request, otherwise we'll just use the default name.*/
  99         if (state->domain_name == NULL) {
 100                 state->domain_name = talloc_strdup(state,
 101                                 domain->libnet_ctx->samr.name);
 102                 if (composite_nomem(state->domain_name, state->ctx)) return;
 103         }
 104
 105         user_list = talloc(state, struct libnet_UserList);
 106         if (composite_nomem(user_list, state->ctx)) return;
 107
 108         user_list->in.domain_name = state->domain_name;
 109
 110         /* Rafal suggested that 128 is a good number here. I don't like magic
 111          * numbers too much, but for now it'll have to do.
 112          */
 113         user_list->in.page_size = 128;
 114         user_list->in.resume_index = state->resume_index;
 115
 116         ctx = libnet_UserList_send(domain->libnet_ctx, state, user_list, NULL);
 117
 118         composite_continue(state->ctx, ctx, cmd_list_users_recv_user_list,
 119                         state);
 120 }
 121
 122 static void cmd_list_users_recv_user_list(struct composite_context *ctx)
 123 {
 124         struct cmd_list_users_state *state = talloc_get_type(
 125                         ctx->async.private_data, struct cmd_list_users_state);
 126         struct libnet_UserList *user_list;
 127         NTSTATUS status;
 128         int i;
 129
 130         DEBUG(5, ("cmd_list_users_recv_user_list called\n"));
 131
 132         user_list = talloc(state, struct libnet_UserList);
 133         if (composite_nomem(user_list, state->ctx)) return;
 134
 135         status = libnet_UserList_recv(ctx, state, user_list);
 136
 137         /* If NTSTATUS is neither OK nor MORE_ENTRIES, something broke */
 138         if (!NT_STATUS_IS_OK(status) &&
 139              !NT_STATUS_EQUAL(status, STATUS_MORE_ENTRIES)) {
 140                 composite_error(state->ctx, status);
 141                 return;
 142         }
 143
 144         for (i = 0; i < user_list->out.count; ++i) {
 145                 DEBUG(5, ("Appending user '%s'\n", user_list->out.users[i].username));
 146                 state->result = talloc_asprintf_append_buffer(state->result, "%s,",
 147                                         user_list->out.users[i].username);
 148         }
 149
 150         /* If the status is OK, we're finished, there's no more users.
 151          * So we'll trim off the trailing ',' and are done.*/
 152         if (NT_STATUS_IS_OK(status)) {
 153                 int str_len = strlen(state->result);
 154                 DEBUG(5, ("list_UserList_recv returned NT_STATUS_OK\n"));
 155                 state->result[str_len - 1] = '\0';
 156                 composite_done(state->ctx);
 157                 return;
 158         }
 159
 160         DEBUG(5, ("list_UserList_recv returned NT_STATUS_MORE_ENTRIES\n"));
 161
 162         /* Otherwise there's more users to get, so call out to libnet and
 163          * continue on this function here. */
 164
 165         user_list->in.domain_name = state->domain_name;
 166         /* See comment above about the page size. 128 seems like a good default.
 167          */
 168         user_list->in.page_size = 128;
 169         user_list->in.resume_index = user_list->out.resume_index;
 170
 171         ctx = libnet_UserList_send(state->domain->libnet_ctx, state, user_list,
 172                         NULL);
 173
 174         composite_continue(state->ctx, ctx, cmd_list_users_recv_user_list,
 175                         state);
 176 }
 177
 178 NTSTATUS wb_cmd_list_users_recv(struct composite_context *ctx,
 179                 TALLOC_CTX *mem_ctx, uint32_t *extra_data_len,
 180                 char **extra_data)
 181 {
 182         NTSTATUS status = composite_wait(ctx);
 183
 184         DEBUG(5, ("wb_cmd_list_users_recv called\n"));
 185
 186         if (NT_STATUS_IS_OK(status)) {
 187                 struct cmd_list_users_state *state = talloc_get_type(
 188                         ctx->private_data, struct cmd_list_users_state);
 189
 190                 *extra_data_len = strlen(state->result);
 191                 *extra_data = talloc_steal(mem_ctx, state->result);
 192         }
 193
 194         talloc_free(ctx);
 195         return status;
 196 }
 197
 198