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