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 "smbd/service_task.h"
  26 #include "param/param.h"
  27
  28 struct cmd_getgrgid_state {
  29         struct composite_context *ctx;
  30         struct wbsrv_service *service;
  31         gid_t gid;
  32         struct dom_sid *sid;
  33         char *workgroup;
  34         struct wbsrv_domain *domain;
  35
  36         struct winbindd_gr *result;
  37 };
  38
  39 static void cmd_getgrgid_recv_sid(struct composite_context *ctx);
  40 static void cmd_getgrgid_recv_domain(struct composite_context *ctx);
  41 static void cmd_getgrgid_recv_group_info(struct composite_context *ctx);
  42
  43 /* Get the SID using the gid */
  44
  45 struct composite_context *wb_cmd_getgrgid_send(TALLOC_CTX *mem_ctx,
  46                                                  struct wbsrv_service *service,
  47                                                  gid_t gid)
  48 {
  49         struct composite_context *ctx, *result;
  50         struct cmd_getgrgid_state *state;
  51
  52         DEBUG(5, ("wb_cmd_getgrgid_send called\n"));
  53
  54         result = composite_create(mem_ctx, service->task->event_ctx);
  55         if (!result) return NULL;
  56
  57         state = talloc(result, struct cmd_getgrgid_state);
  58         if (composite_nomem(state, result)) return result;
  59         state->ctx = result;
  60         result->private_data = state;
  61         state->service = service;
  62         state->gid = gid;
  63
  64         ctx = wb_gid2sid_send(state, service, gid);
  65         if (composite_nomem(ctx, state->ctx)) return result;
  66
  67         composite_continue(result, ctx, cmd_getgrgid_recv_sid, state);
  68         return result;
  69 }
  70
  71
  72 /* Receive the sid and get the domain structure with it */
  73
  74 static void cmd_getgrgid_recv_sid(struct composite_context *ctx)
  75 {
  76         struct cmd_getgrgid_state *state =
  77                 talloc_get_type(ctx->async.private_data,
  78                                 struct cmd_getgrgid_state);
  79
  80         DEBUG(5, ("cmd_getgrgid_recv_sid called %p\n", ctx->private_data));
  81
  82         state->ctx->status = wb_gid2sid_recv(ctx, state, &state->sid);
  83         if (!composite_is_ok(state->ctx)) return;
  84
  85         ctx = wb_sid2domain_send(state, state->service, state->sid);
  86
  87         composite_continue(state->ctx, ctx, cmd_getgrgid_recv_domain, state);
  88 }
  89
  90 /* Receive the domain struct and call libnet to get the user info struct */
  91
  92 static void cmd_getgrgid_recv_domain(struct composite_context *ctx)
  93 {
  94         struct cmd_getgrgid_state *state =
  95                 talloc_get_type(ctx->async.private_data,
  96                                 struct cmd_getgrgid_state);
  97         struct libnet_GroupInfo *group_info;
  98
  99         DEBUG(5, ("cmd_getgrgid_recv_domain called\n"));
 100
 101         state->ctx->status = wb_sid2domain_recv(ctx, &state->domain);
 102         if (!composite_is_ok(state->ctx)) return;
 103
 104         group_info = talloc(state, struct libnet_GroupInfo);
 105         if (composite_nomem(group_info, state->ctx)) return;
 106
 107         group_info->in.level = GROUP_INFO_BY_SID;
 108         group_info->in.data.group_sid = state->sid;
 109         group_info->in.domain_name = state->domain->libnet_ctx->samr.name;
 110
 111         /* We need the workgroup later, so copy it  */
 112         state->workgroup = talloc_strdup(state,
 113                         state->domain->libnet_ctx->samr.name);
 114         if (composite_nomem(state->workgroup, state->ctx)) return;
 115
 116         ctx = libnet_GroupInfo_send(state->domain->libnet_ctx, state,group_info,
 117                         NULL);
 118
 119         composite_continue(state->ctx, ctx, cmd_getgrgid_recv_group_info,state);
 120 }
 121
 122 /* Receive the group info struct */
 123
 124 static void cmd_getgrgid_recv_group_info(struct composite_context *ctx)
 125 {
 126         struct cmd_getgrgid_state *state =
 127                 talloc_get_type(ctx->async.private_data,
 128                                 struct cmd_getgrgid_state);
 129         struct libnet_GroupInfo *group_info;
 130         struct winbindd_gr *gr;
 131         char *group_name_with_domain;
 132
 133         DEBUG(5, ("cmd_getgrgid_recv_group_info called\n"));
 134
 135         gr = talloc_zero(state, struct winbindd_gr);
 136         if (composite_nomem(gr, state->ctx)) return;
 137
 138         group_info = talloc(state, struct libnet_GroupInfo);
 139         if(composite_nomem(group_info, state->ctx)) return;
 140
 141         state->ctx->status = libnet_GroupInfo_recv(ctx, state, group_info);
 142         if (!composite_is_ok(state->ctx)) return;
 143
 144         group_name_with_domain = talloc_asprintf(gr, "%s%s%s",
 145                 state->workgroup,
 146                 lpcfg_winbind_separator(state->service->task->lp_ctx),
 147                 group_info->out.group_name);
 148         if (composite_nomem(group_name_with_domain, state->ctx)) {
 149                 return;
 150         }
 151
 152         WBSRV_SAMBA3_SET_STRING(gr->gr_name, group_name_with_domain);
 153         WBSRV_SAMBA3_SET_STRING(gr->gr_passwd, "*");
 154
 155         gr->gr_gid = state->gid;
 156
 157         state->result = gr;
 158
 159         composite_done(state->ctx);
 160 }
 161
 162 NTSTATUS wb_cmd_getgrgid_recv(struct composite_context *ctx,
 163                 TALLOC_CTX *mem_ctx, struct winbindd_gr **gr)
 164 {
 165         NTSTATUS status = composite_wait(ctx);
 166
 167         DEBUG(5, ("wb_cmd_getgrgid_recv called\n"));
 168
 169         DEBUG(5, ("status is %s\n", nt_errstr(status)));
 170
 171         if (NT_STATUS_IS_OK(status)) {
 172                 struct cmd_getgrgid_state *state =
 173                         talloc_get_type(ctx->private_data,
 174                                         struct cmd_getgrgid_state);
 175                 *gr = talloc_steal(mem_ctx, state->result);
 176         }
 177         talloc_free(ctx);
 178         return status;
 179
 180 }
 181