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