source4/winbind/wb_cmd_getpwent.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3
   4    Command backend for getpwent
   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_getpwent_state {
  31         struct composite_context *ctx;
  32         struct wbsrv_service *service;
  33
  34         struct wbsrv_pwent *pwent;
  35         uint32_t max_users;
  36
  37         uint32_t num_users;
  38         struct winbindd_pw *result;
  39 };
  40
  41 static void cmd_getpwent_recv_pwnam(struct composite_context *ctx);
  42 #if 0 /*FIXME: implement this*/
  43 static void cmd_getpwent_recv_user_list(struct composite_context *ctx);
  44 #endif
  45
  46 struct composite_context *wb_cmd_getpwent_send(TALLOC_CTX *mem_ctx,
  47                 struct wbsrv_service *service, struct wbsrv_pwent *pwent,
  48                 uint32_t max_users)
  49 {
  50         struct composite_context *ctx, *result;
  51         struct cmd_getpwent_state *state;
  52
  53         DEBUG(5, ("wb_cmd_getpwent_send called\n"));
  54
  55         result = composite_create(mem_ctx, service->task->event_ctx);
  56         if (!result) return NULL;
  57
  58         state = talloc(mem_ctx, struct cmd_getpwent_state);
  59         if (composite_nomem(state, result)) return result;
  60
  61         state->ctx = result;
  62         result->private_data = state;
  63         state->service = service;
  64         state->pwent = pwent;
  65         state->max_users = max_users;
  66         state->num_users = 0;
  67
  68         /* If there are users left in the libnet_UserList and we're below the
  69          * maximum number of users to get per winbind getpwent call, use
  70          * getpwnam to get the winbindd_pw struct */
  71         if (pwent->page_index < pwent->user_list->out.count) {
  72                 int idx = pwent->page_index;
  73                 char *username = talloc_strdup(state,
  74                         pwent->user_list->out.users[idx].username);
  75
  76                 pwent->page_index++;
  77                 ctx = wb_cmd_getpwnam_send(state, service, username);
  78                 if (composite_nomem(ctx, state->ctx)) return result;
  79
  80                 composite_continue(state->ctx, ctx, cmd_getpwent_recv_pwnam,
  81                         state);
  82         } else {
  83         /* If there is no valid user left, call libnet_UserList to get a new
  84          * list of users. */
  85                 composite_error(state->ctx, NT_STATUS_NO_MORE_ENTRIES);
  86         }
  87         return result;
  88 }
  89
  90 static void cmd_getpwent_recv_pwnam(struct composite_context *ctx)
  91 {
  92         struct cmd_getpwent_state *state =
  93                 talloc_get_type(ctx->async.private_data,
  94                                 struct cmd_getpwent_state);
  95         struct winbindd_pw *pw;
  96
  97         DEBUG(5, ("cmd_getpwent_recv_pwnam called\n"));
  98
  99         state->ctx->status = wb_cmd_getpwnam_recv(ctx, state, &pw);
 100         if (!composite_is_ok(state->ctx)) return;
 101
 102         /*FIXME: Cheat for now and only get one user per call */
 103         state->result = pw;
 104
 105         composite_done(state->ctx);
 106 }
 107
 108 NTSTATUS wb_cmd_getpwent_recv(struct composite_context *ctx,
 109                 TALLOC_CTX *mem_ctx, struct winbindd_pw **pw,
 110                 uint32_t *num_users)
 111 {
 112         NTSTATUS status = composite_wait(ctx);
 113
 114         DEBUG(5, ("wb_cmd_getpwent_recv called\n"));
 115
 116         if (NT_STATUS_IS_OK(status)) {
 117                 struct cmd_getpwent_state *state =
 118                         talloc_get_type(ctx->private_data,
 119                                         struct cmd_getpwent_state);
 120                 *pw = talloc_steal(mem_ctx, state->result);
 121                 /*FIXME: Cheat and only get oner user */
 122                 *num_users = 1;
 123         }
 124
 125         talloc_free(ctx);
 126         return status;
 127 }
 128