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 "smbd/service_task.h"
  26
  27 struct cmd_getpwent_state {
  28         struct composite_context *ctx;
  29         struct wbsrv_service *service;
  30
  31         struct wbsrv_pwent *pwent;
  32         uint32_t max_users;
  33
  34         uint32_t num_users;
  35         struct winbindd_pw *result;
  36 };
  37
  38 static void cmd_getpwent_recv_pwnam(struct composite_context *ctx);
  39 #if 0 /*FIXME: implement this*/
  40 static void cmd_getpwent_recv_user_list(struct composite_context *ctx);
  41 #endif
  42
  43 struct composite_context *wb_cmd_getpwent_send(TALLOC_CTX *mem_ctx,
  44                 struct wbsrv_service *service, struct wbsrv_pwent *pwent,
  45                 uint32_t max_users)
  46 {
  47         struct composite_context *ctx, *result;
  48         struct cmd_getpwent_state *state;
  49
  50         DEBUG(5, ("wb_cmd_getpwent_send called\n"));
  51
  52         result = composite_create(mem_ctx, service->task->event_ctx);
  53         if (!result) return NULL;
  54
  55         state = talloc(mem_ctx, struct cmd_getpwent_state);
  56         if (composite_nomem(state, result)) return result;
  57
  58         state->ctx = result;
  59         result->private_data = state;
  60         state->service = service;
  61         state->pwent = pwent;
  62         state->max_users = max_users;
  63         state->num_users = 0;
  64
  65         /* If there are users left in the libnet_UserList and we're below the
  66          * maximum number of users to get per winbind getpwent call, use
  67          * getpwnam to get the winbindd_pw struct */
  68         if (pwent->page_index < pwent->user_list->out.count) {
  69                 int idx = pwent->page_index;
  70                 char *username = talloc_strdup(state,
  71                         pwent->user_list->out.users[idx].username);
  72
  73                 pwent->page_index++;
  74                 ctx = wb_cmd_getpwnam_send(state, service, username);
  75                 if (composite_nomem(ctx, state->ctx)) return result;
  76
  77                 composite_continue(state->ctx, ctx, cmd_getpwent_recv_pwnam,
  78                         state);
  79         } else {
  80         /* If there is no valid user left, call libnet_UserList to get a new
  81          * list of users. */
  82                 composite_error(state->ctx, NT_STATUS_NO_MORE_ENTRIES);
  83         }
  84         return result;
  85 }
  86
  87 static void cmd_getpwent_recv_pwnam(struct composite_context *ctx)
  88 {
  89         struct cmd_getpwent_state *state =
  90                 talloc_get_type(ctx->async.private_data,
  91                                 struct cmd_getpwent_state);
  92         struct winbindd_pw *pw;
  93
  94         DEBUG(5, ("cmd_getpwent_recv_pwnam called\n"));
  95
  96         state->ctx->status = wb_cmd_getpwnam_recv(ctx, state, &pw);
  97         if (!composite_is_ok(state->ctx)) return;
  98
  99         /*FIXME: Cheat for now and only get one user per call */
 100         state->result = pw;
 101
 102         composite_done(state->ctx);
 103 }
 104
 105 NTSTATUS wb_cmd_getpwent_recv(struct composite_context *ctx,
 106                 TALLOC_CTX *mem_ctx, struct winbindd_pw **pw,
 107                 uint32_t *num_users)
 108 {
 109         NTSTATUS status = composite_wait(ctx);
 110
 111         DEBUG(5, ("wb_cmd_getpwent_recv called\n"));
 112
 113         if (NT_STATUS_IS_OK(status)) {
 114                 struct cmd_getpwent_state *state =
 115                         talloc_get_type(ctx->private_data,
 116                                         struct cmd_getpwent_state);
 117                 *pw = talloc_steal(mem_ctx, state->result);
 118                 /*FIXME: Cheat and only get oner user */
 119                 *num_users = 1;
 120         }
 121
 122         talloc_free(ctx);
 123         return status;
 124 }
 125