source4/rpc_server/unixinfo/dcesrv_unixinfo.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3
   4    endpoint server for the unixinfo pipe
   5
   6    Copyright (C) Volker Lendecke 2005
   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 "rpc_server/dcerpc_server.h"
  24 #include "rpc_server/common/common.h"
  25 #include "librpc/gen_ndr/ndr_unixinfo.h"
  26 #include "libcli/wbclient/wbclient.h"
  27 #include "lib/events/events.h"
  28 #include "system/passwd.h"
  29 #include "param/param.h"
  30
  31 static NTSTATUS dcerpc_unixinfo_bind(struct dcesrv_call_state *dce_call,
  32                                      const struct dcesrv_interface *iface)
  33 {
  34         struct wbc_context *wbc_ctx;
  35
  36         wbc_ctx = wbc_init(dce_call->context, dce_call->msg_ctx,
  37                            dce_call->event_ctx);
  38         NT_STATUS_HAVE_NO_MEMORY(wbc_ctx);
  39
  40         dce_call->context->private = wbc_ctx;
  41
  42         return NT_STATUS_OK;
  43 }
  44
  45 #define DCESRV_INTERFACE_UNIXINFO_BIND dcerpc_unixinfo_bind
  46
  47 static NTSTATUS dcesrv_unixinfo_SidToUid(struct dcesrv_call_state *dce_call,
  48                                   TALLOC_CTX *mem_ctx,
  49                                   struct unixinfo_SidToUid *r)
  50 {
  51         NTSTATUS status;
  52         struct wbc_context *wbc_ctx = talloc_get_type_abort(
  53                                                 dce_call->context->private,
  54                                                 struct wbc_context);
  55         struct id_mapping *ids;
  56         struct composite_context *ctx;
  57
  58         DEBUG(5, ("dcesrv_unixinfo_SidToUid called\n"));
  59
  60         ids = talloc(mem_ctx, struct  id_mapping);
  61         NT_STATUS_HAVE_NO_MEMORY(ids);
  62
  63         ids->sid = &r->in.sid;
  64         ids->status = NT_STATUS_NONE_MAPPED;
  65         ids->unixid = NULL;
  66         ctx = wbc_sids_to_xids_send(wbc_ctx, ids, 1, ids);
  67         NT_STATUS_HAVE_NO_MEMORY(ctx);
  68
  69         status = wbc_sids_to_xids_recv(ctx, &ids);
  70         NT_STATUS_NOT_OK_RETURN(status);
  71
  72         if (ids->unixid->type == ID_TYPE_BOTH ||
  73             ids->unixid->type == ID_TYPE_UID) {
  74                 *r->out.uid = ids->unixid->id;
  75                 return NT_STATUS_OK;
  76         } else {
  77                 return NT_STATUS_INVALID_SID;
  78         }
  79 }
  80
  81 static NTSTATUS dcesrv_unixinfo_UidToSid(struct dcesrv_call_state *dce_call,
  82                                   TALLOC_CTX *mem_ctx,
  83                                   struct unixinfo_UidToSid *r)
  84 {
  85         struct wbc_context *wbc_ctx = talloc_get_type_abort(
  86                                                 dce_call->context->private,
  87                                                 struct wbc_context);
  88         struct id_mapping *ids;
  89         struct composite_context *ctx;
  90         uint32_t uid;
  91         NTSTATUS status;
  92
  93         DEBUG(5, ("dcesrv_unixinfo_UidToSid called\n"));
  94
  95         uid = r->in.uid;        /* This cuts uid to 32 bit */
  96         if ((uint64_t)uid != r->in.uid) {
  97                 DEBUG(10, ("uid out of range\n"));
  98                 return NT_STATUS_INVALID_PARAMETER;
  99         }
 100
 101         ids = talloc(mem_ctx, struct id_mapping);
 102         NT_STATUS_HAVE_NO_MEMORY(ids);
 103
 104         ids->sid = NULL;
 105         ids->status = NT_STATUS_NONE_MAPPED;
 106         ids->unixid = talloc(ids, struct unixid);
 107         NT_STATUS_HAVE_NO_MEMORY(ids->unixid);
 108
 109         ids->unixid->id = uid;
 110         ids->unixid->type = ID_TYPE_UID;
 111
 112         ctx = wbc_xids_to_sids_send(wbc_ctx, ids, 1, ids);
 113         NT_STATUS_HAVE_NO_MEMORY(ctx);
 114
 115         status = wbc_xids_to_sids_recv(ctx, &ids);
 116         NT_STATUS_NOT_OK_RETURN(status);
 117
 118         r->out.sid = ids->sid;
 119         return NT_STATUS_OK;
 120 }
 121
 122 static NTSTATUS dcesrv_unixinfo_SidToGid(struct dcesrv_call_state *dce_call,
 123                                   TALLOC_CTX *mem_ctx,
 124                                   struct unixinfo_SidToGid *r)
 125 {
 126         NTSTATUS status;
 127         struct wbc_context *wbc_ctx = talloc_get_type_abort(
 128                                                 dce_call->context->private,
 129                                                 struct wbc_context);
 130         struct id_mapping *ids;
 131         struct composite_context *ctx;
 132
 133         DEBUG(5, ("dcesrv_unixinfo_SidToGid called\n"));
 134
 135         ids = talloc(mem_ctx, struct  id_mapping);
 136         NT_STATUS_HAVE_NO_MEMORY(ids);
 137
 138         ids->sid = &r->in.sid;
 139         ids->status = NT_STATUS_NONE_MAPPED;
 140         ids->unixid = NULL;
 141         ctx = wbc_sids_to_xids_send(wbc_ctx, ids, 1, ids);
 142         NT_STATUS_HAVE_NO_MEMORY(ctx);
 143
 144         status = wbc_sids_to_xids_recv(ctx, &ids);
 145         NT_STATUS_NOT_OK_RETURN(status);
 146
 147         if (ids->unixid->type == ID_TYPE_BOTH ||
 148             ids->unixid->type == ID_TYPE_GID) {
 149                 *r->out.gid = ids->unixid->id;
 150                 return NT_STATUS_OK;
 151         } else {
 152                 return NT_STATUS_INVALID_SID;
 153         }
 154 }
 155
 156 static NTSTATUS dcesrv_unixinfo_GidToSid(struct dcesrv_call_state *dce_call,
 157                                   TALLOC_CTX *mem_ctx,
 158                                   struct unixinfo_GidToSid *r)
 159 {
 160         struct wbc_context *wbc_ctx = talloc_get_type_abort(
 161                                                 dce_call->context->private,
 162                                                 struct wbc_context);
 163         struct id_mapping *ids;
 164         struct composite_context *ctx;
 165         uint32_t gid;
 166         NTSTATUS status;
 167
 168         DEBUG(5, ("dcesrv_unixinfo_GidToSid called\n"));
 169
 170         gid = r->in.gid;        /* This cuts gid to 32 bit */
 171         if ((uint64_t)gid != r->in.gid) {
 172                 DEBUG(10, ("gid out of range\n"));
 173                 return NT_STATUS_INVALID_PARAMETER;
 174         }
 175
 176         ids = talloc(mem_ctx, struct id_mapping);
 177         NT_STATUS_HAVE_NO_MEMORY(ids);
 178
 179         ids->sid = NULL;
 180         ids->status = NT_STATUS_NONE_MAPPED;
 181         ids->unixid = talloc(ids, struct unixid);
 182         NT_STATUS_HAVE_NO_MEMORY(ids->unixid);
 183
 184         ids->unixid->id = gid;
 185         ids->unixid->type = ID_TYPE_GID;
 186
 187         ctx = wbc_xids_to_sids_send(wbc_ctx, ids, 1, ids);
 188         NT_STATUS_HAVE_NO_MEMORY(ctx);
 189
 190         status = wbc_xids_to_sids_recv(ctx, &ids);
 191         NT_STATUS_NOT_OK_RETURN(status);
 192
 193         r->out.sid = ids->sid;
 194         return NT_STATUS_OK;
 195 }
 196
 197 static NTSTATUS dcesrv_unixinfo_GetPWUid(struct dcesrv_call_state *dce_call,
 198                                   TALLOC_CTX *mem_ctx,
 199                                   struct unixinfo_GetPWUid *r)
 200 {
 201         int i;
 202
 203         *r->out.count = 0;
 204
 205         r->out.infos = talloc_zero_array(mem_ctx, struct unixinfo_GetPWUidInfo,
 206                                          *r->in.count);
 207         NT_STATUS_HAVE_NO_MEMORY(r->out.infos);
 208         *r->out.count = *r->in.count;
 209
 210         for (i=0; i < *r->in.count; i++) {
 211                 uid_t uid;
 212                 struct passwd *pwd;
 213
 214                 uid = r->in.uids[i];
 215                 pwd = getpwuid(uid);
 216                 if (pwd == NULL) {
 217                         DEBUG(10, ("uid %d not found\n", uid));
 218                         r->out.infos[i].homedir = "";
 219                         r->out.infos[i].shell = "";
 220                         r->out.infos[i].status = NT_STATUS_NO_SUCH_USER;
 221                         continue;
 222                 }
 223
 224                 r->out.infos[i].homedir = talloc_strdup(mem_ctx, pwd->pw_dir);
 225                 r->out.infos[i].shell = talloc_strdup(mem_ctx, pwd->pw_shell);
 226
 227                 if ((r->out.infos[i].homedir == NULL) ||
 228                     (r->out.infos[i].shell == NULL)) {
 229                         r->out.infos[i].homedir = "";
 230                         r->out.infos[i].shell = "";
 231                         r->out.infos[i].status = NT_STATUS_NO_MEMORY;
 232                         continue;
 233                 }
 234
 235                 r->out.infos[i].status = NT_STATUS_OK;
 236         }
 237
 238         return NT_STATUS_OK;
 239 }
 240
 241 /* include the generated boilerplate */
 242 #include "librpc/gen_ndr/ndr_unixinfo_s.c"