source4/winbind/wb_cmd_getgrgid.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3
   4    Backend for getgrgid
   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 #include "param/param.h"
  30 #include "libcli/security/security.h"
  31 #include "auth/credentials/credentials.h"
  32
  33 struct cmd_getgrgid_state {
  34         struct composite_context *ctx;
  35         struct wbsrv_service *service;
  36         gid_t gid;
  37         struct dom_sid *sid;
  38         char *workgroup;
  39         struct wbsrv_domain *domain;
  40
  41         struct winbindd_gr *result;
  42 };
  43
  44 static void cmd_getgrgid_recv_sid(struct composite_context *ctx);
  45 static void cmd_getgrgid_recv_domain(struct composite_context *ctx);
  46 static void cmd_getgrgid_recv_group_info(struct composite_context *ctx);
  47
  48 /* Get the SID using the gid */
  49
  50 struct composite_context *wb_cmd_getgrgid_send(TALLOC_CTX *mem_ctx,
  51                                                  struct wbsrv_service *service,
  52                                                  gid_t gid)
  53 {
  54         struct composite_context *ctx, *result;
  55         struct cmd_getgrgid_state *state;
  56
  57         DEBUG(5, ("wb_cmd_getgrgid_send called\n"));
  58
  59         result = composite_create(mem_ctx, service->task->event_ctx);
  60         if (!result) return NULL;
  61
  62         state = talloc(result, struct cmd_getgrgid_state);
  63         if (composite_nomem(state, result)) return result;
  64         state->ctx = result;
  65         result->private_data = state;
  66         state->service = service;
  67         state->gid = gid;
  68
  69         ctx = wb_gid2sid_send(state, service, gid);
  70         if (composite_nomem(ctx, state->ctx)) return result;
  71
  72         composite_continue(result, ctx, cmd_getgrgid_recv_sid, state);
  73         return result;
  74 }
  75
  76
  77 /* Receive the sid and get the domain structure with it */
  78
  79 static void cmd_getgrgid_recv_sid(struct composite_context *ctx)
  80 {
  81         struct cmd_getgrgid_state *state =
  82                 talloc_get_type(ctx->async.private_data,
  83                                 struct cmd_getgrgid_state);
  84
  85         DEBUG(5, ("cmd_getgrgid_recv_sid called %p\n", ctx->private_data));
  86
  87         state->ctx->status = wb_gid2sid_recv(ctx, state, &state->sid);
  88         if (!composite_is_ok(state->ctx)) return;
  89
  90         ctx = wb_sid2domain_send(state, state->service, state->sid);
  91
  92         composite_continue(state->ctx, ctx, cmd_getgrgid_recv_domain, state);
  93 }
  94
  95 /* Receive the domain struct and call libnet to get the user info struct */
  96
  97 static void cmd_getgrgid_recv_domain(struct composite_context *ctx)
  98 {
  99         struct cmd_getgrgid_state *state =
 100                 talloc_get_type(ctx->async.private_data,
 101                                 struct cmd_getgrgid_state);
 102         struct libnet_GroupInfo *group_info;
 103
 104         DEBUG(5, ("cmd_getgrgid_recv_domain called\n"));
 105
 106         state->ctx->status = wb_sid2domain_recv(ctx, &state->domain);
 107         if (!composite_is_ok(state->ctx)) return;
 108
 109         group_info = talloc(state, struct libnet_GroupInfo);
 110         if (composite_nomem(group_info, state->ctx)) return;
 111
 112         group_info->in.level = GROUP_INFO_BY_SID;
 113         group_info->in.data.group_sid = state->sid;
 114         group_info->in.domain_name = state->domain->libnet_ctx->samr.name;
 115
 116         /* We need the workgroup later, so copy it  */
 117         state->workgroup = talloc_strdup(state,
 118                         state->domain->libnet_ctx->samr.name);
 119         if (composite_nomem(state->workgroup, state->ctx)) return;
 120
 121         ctx = libnet_GroupInfo_send(state->domain->libnet_ctx, state,group_info,
 122                         NULL);
 123
 124         composite_continue(state->ctx, ctx, cmd_getgrgid_recv_group_info,state);
 125 }
 126
 127 /* Receive the group info struct */
 128
 129 static void cmd_getgrgid_recv_group_info(struct composite_context *ctx)
 130 {
 131         struct cmd_getgrgid_state *state =
 132                 talloc_get_type(ctx->async.private_data,
 133                                 struct cmd_getgrgid_state);
 134         struct libnet_GroupInfo *group_info;
 135         struct winbindd_gr *gr;
 136
 137         DEBUG(5, ("cmd_getgrgid_recv_group_info called\n"));
 138
 139         gr = talloc(state, struct winbindd_gr);
 140         if (composite_nomem(gr, state->ctx)) return;
 141
 142         group_info = talloc(state, struct libnet_GroupInfo);
 143         if(composite_nomem(group_info, state->ctx)) return;
 144
 145         state->ctx->status = libnet_GroupInfo_recv(ctx, state, group_info);
 146         if (!composite_is_ok(state->ctx)) return;
 147
 148         WBSRV_SAMBA3_SET_STRING(gr->gr_name, group_info->out.group_name);
 149         WBSRV_SAMBA3_SET_STRING(gr->gr_passwd, "*");
 150
 151         gr->gr_gid = state->gid;
 152
 153         state->result = gr;
 154
 155         composite_done(state->ctx);
 156 }
 157
 158 NTSTATUS wb_cmd_getgrgid_recv(struct composite_context *ctx,
 159                 TALLOC_CTX *mem_ctx, struct winbindd_gr **gr)
 160 {
 161         NTSTATUS status = composite_wait(ctx);
 162
 163         DEBUG(5, ("wb_cmd_getgrgid_recv called\n"));
 164
 165         DEBUG(5, ("status is %s\n", nt_errstr(status)));
 166
 167         if (NT_STATUS_IS_OK(status)) {
 168                 struct cmd_getgrgid_state *state =
 169                         talloc_get_type(ctx->private_data,
 170                                         struct cmd_getgrgid_state);
 171                 *gr = talloc_steal(mem_ctx, state->result);
 172         }
 173         talloc_free(ctx);
 174         return status;
 175
 176 }
 177