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