source4/winbind/wb_samba3_protocol.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3    Main winbindd samba3 server routines
   4
   5    Copyright (C) Stefan Metzmacher      2005
   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 "winbind/wb_server.h"
  24 #include "smbd/service_stream.h"
  25 #include "lib/stream/packet.h"
  26
  27 /*
  28   work out if a packet is complete for protocols that use a 32 bit host byte
  29   order length
  30 */
  31 NTSTATUS wbsrv_samba3_packet_full_request(void *private, DATA_BLOB blob, size_t *size)
  32 {
  33         uint32_t *len;
  34         if (blob.length < 4) {
  35                 return STATUS_MORE_ENTRIES;
  36         }
  37         len = (uint32_t *)blob.data;
  38         *size = (*len);
  39         if (*size > blob.length) {
  40                 return STATUS_MORE_ENTRIES;
  41         }
  42         return NT_STATUS_OK;
  43 }
  44
  45
  46 NTSTATUS wbsrv_samba3_pull_request(DATA_BLOB blob, struct wbsrv_connection *wbconn,
  47                                    struct wbsrv_samba3_call **_call)
  48 {
  49         struct wbsrv_samba3_call *call;
  50
  51         if (blob.length != sizeof(call->request)) {
  52                 DEBUG(0,("wbsrv_samba3_pull_request: invalid blob length %lu should be %lu\n"
  53                          " make sure you use the correct winbind client tools!\n",
  54                          (long)blob.length, (long)sizeof(call->request)));
  55                 return NT_STATUS_INVALID_PARAMETER;
  56         }
  57
  58         call = talloc_zero(wbconn, struct wbsrv_samba3_call);
  59         NT_STATUS_HAVE_NO_MEMORY(call);
  60
  61         /* the packet layout is the same as the in memory layout of the request, so just copy it */
  62         memcpy(&call->request, blob.data, sizeof(call->request));
  63
  64         call->wbconn = wbconn;
  65         call->event_ctx = call->wbconn->conn->event.ctx;
  66
  67         *_call = call;
  68         return NT_STATUS_OK;
  69 }
  70
  71 NTSTATUS wbsrv_samba3_handle_call(struct wbsrv_samba3_call *s3call)
  72 {
  73         DEBUG(10, ("Got winbind samba3 request %d\n", s3call->request.cmd));
  74
  75         s3call->response.length = sizeof(s3call->response);
  76
  77         switch(s3call->request.cmd) {
  78         case WINBINDD_INTERFACE_VERSION:
  79                 return wbsrv_samba3_interface_version(s3call);
  80
  81         case WINBINDD_CHECK_MACHACC:
  82                 return wbsrv_samba3_check_machacc(s3call);
  83
  84         case WINBINDD_PING:
  85                 return wbsrv_samba3_ping(s3call);
  86
  87         case WINBINDD_INFO:
  88                 return wbsrv_samba3_info(s3call);
  89
  90         case WINBINDD_DOMAIN_NAME:
  91                 return wbsrv_samba3_domain_name(s3call);
  92
  93         case WINBINDD_NETBIOS_NAME:
  94                 return wbsrv_samba3_netbios_name(s3call);
  95
  96         case WINBINDD_PRIV_PIPE_DIR:
  97                 return wbsrv_samba3_priv_pipe_dir(s3call);
  98
  99         case WINBINDD_LOOKUPNAME:
 100                 return wbsrv_samba3_lookupname(s3call);
 101
 102         case WINBINDD_LOOKUPSID:
 103                 return wbsrv_samba3_lookupsid(s3call);
 104
 105         case WINBINDD_PAM_AUTH:
 106                 return wbsrv_samba3_pam_auth(s3call);
 107
 108         case WINBINDD_PAM_AUTH_CRAP:
 109                 return wbsrv_samba3_pam_auth_crap(s3call);
 110
 111         case WINBINDD_GETDCNAME:
 112                 return wbsrv_samba3_getdcname(s3call);
 113
 114         case WINBINDD_GETUSERDOMGROUPS:
 115                 return wbsrv_samba3_userdomgroups(s3call);
 116
 117         case WINBINDD_GETUSERSIDS:
 118                 return wbsrv_samba3_usersids(s3call);
 119
 120         case WINBINDD_LIST_TRUSTDOM:
 121                 return wbsrv_samba3_list_trustdom(s3call);
 122
 123         case WINBINDD_LIST_USERS:
 124                 return wbsrv_samba3_list_users(s3call);
 125
 126         case WINBINDD_GETPWNAM:
 127                 return wbsrv_samba3_getpwnam(s3call);
 128
 129         case WINBINDD_GETPWUID:
 130                 return wbsrv_samba3_getpwuid(s3call);
 131
 132         case WINBINDD_SETPWENT:
 133                 return wbsrv_samba3_setpwent(s3call);
 134
 135         case WINBINDD_GETPWENT:
 136                 return wbsrv_samba3_getpwent(s3call);
 137
 138         case WINBINDD_ENDPWENT:
 139                 return wbsrv_samba3_endpwent(s3call);
 140
 141         case WINBINDD_GETGRNAM:
 142                 return wbsrv_samba3_getgrnam(s3call);
 143
 144         case WINBINDD_GETGRGID:
 145                 return wbsrv_samba3_getgrgid(s3call);
 146
 147         case WINBINDD_GETGROUPS:
 148                 return wbsrv_samba3_getgroups(s3call);
 149
 150         case WINBINDD_SETGRENT:
 151                 return wbsrv_samba3_setgrent(s3call);
 152
 153         case WINBINDD_GETGRENT:
 154                 return wbsrv_samba3_getgrent(s3call);
 155
 156         case WINBINDD_ENDGRENT:
 157                 return wbsrv_samba3_endgrent(s3call);
 158
 159         case WINBINDD_SID_TO_UID:
 160         case WINBINDD_DUAL_SID2UID:
 161                 return wbsrv_samba3_sid2uid(s3call);
 162
 163         case WINBINDD_SID_TO_GID:
 164         case WINBINDD_DUAL_SID2GID:
 165                 return wbsrv_samba3_sid2gid(s3call);
 166
 167         case WINBINDD_UID_TO_SID:
 168         case WINBINDD_DUAL_UID2SID:
 169                 return wbsrv_samba3_uid2sid(s3call);
 170
 171         case WINBINDD_GID_TO_SID:
 172         case WINBINDD_DUAL_GID2SID:
 173                 return wbsrv_samba3_gid2sid(s3call);
 174
 175                 /* Unimplemented commands */
 176
 177         case WINBINDD_PAM_CHAUTHTOK:
 178         case WINBINDD_PAM_LOGOFF:
 179         case WINBINDD_PAM_CHNG_PSWD_AUTH_CRAP:
 180         case WINBINDD_LIST_GROUPS:
 181         case WINBINDD_LOOKUPRIDS:
 182         case WINBINDD_SIDS_TO_XIDS:
 183         case WINBINDD_ALLOCATE_UID:
 184         case WINBINDD_ALLOCATE_GID:
 185         case WINBINDD_SET_MAPPING:
 186         case WINBINDD_SET_HWM:
 187         case WINBINDD_DUMP_MAPS:
 188         case WINBINDD_DOMAIN_INFO:
 189         case WINBINDD_SHOW_SEQUENCE:
 190         case WINBINDD_WINS_BYIP:
 191         case WINBINDD_WINS_BYNAME:
 192         case WINBINDD_GETGRLST:
 193         case WINBINDD_INIT_CONNECTION:
 194         case WINBINDD_DUAL_SIDS2XIDS:
 195         case WINBINDD_DUAL_SET_MAPPING:
 196         case WINBINDD_DUAL_SET_HWM:
 197         case WINBINDD_DUAL_DUMP_MAPS:
 198         case WINBINDD_DUAL_UID2NAME:
 199         case WINBINDD_DUAL_NAME2UID:
 200         case WINBINDD_DUAL_GID2NAME:
 201         case WINBINDD_DUAL_NAME2GID:
 202         case WINBINDD_DUAL_USERINFO:
 203         case WINBINDD_DUAL_GETSIDALIASES:
 204         case WINBINDD_CCACHE_NTLMAUTH:
 205         case WINBINDD_NUM_CMDS:
 206                 DEBUG(10, ("Unimplemented winbind samba3 request %d\n",
 207                            s3call->request.cmd));
 208                 break;
 209         }
 210
 211         s3call->response.result = WINBINDD_ERROR;
 212         return NT_STATUS_OK;
 213 }
 214
 215 static NTSTATUS wbsrv_samba3_push_reply(struct wbsrv_samba3_call *call, TALLOC_CTX *mem_ctx, DATA_BLOB *_blob)
 216 {
 217         DATA_BLOB blob;
 218         uint8_t *extra_data;
 219         size_t extra_data_len = 0;
 220
 221         extra_data = (uint8_t *)call->response.extra_data.data;
 222         if (extra_data != NULL) {
 223                 extra_data_len = call->response.length -
 224                         sizeof(call->response);
 225         }
 226
 227         blob = data_blob_talloc(mem_ctx, NULL, call->response.length);
 228         NT_STATUS_HAVE_NO_MEMORY(blob.data);
 229
 230         /* don't push real pointer values into sockets */
 231         if (extra_data) {
 232                 call->response.extra_data.data = (void *)0xFFFFFFFF;
 233         }
 234         memcpy(blob.data, &call->response, sizeof(call->response));
 235         /* set back the pointer */
 236         call->response.extra_data.data = extra_data;
 237
 238         if (extra_data) {
 239                 memcpy(blob.data + sizeof(call->response), extra_data, extra_data_len);
 240         }
 241
 242         *_blob = blob;
 243         return NT_STATUS_OK;
 244 }
 245
 246 /*
 247  * queue a wbsrv_call reply on a wbsrv_connection
 248  * NOTE: that this implies talloc_free(call),
 249  *       use talloc_reference(call) if you need it after
 250  *       calling wbsrv_queue_reply
 251  */
 252 NTSTATUS wbsrv_samba3_send_reply(struct wbsrv_samba3_call *call)
 253 {
 254         struct wbsrv_connection *wbconn = call->wbconn;
 255         DATA_BLOB rep;
 256         NTSTATUS status;
 257
 258         status = wbsrv_samba3_push_reply(call, call, &rep);
 259         NT_STATUS_NOT_OK_RETURN(status);
 260
 261         status = packet_send(call->wbconn->packet, rep);
 262
 263         talloc_free(call);
 264
 265         if (!NT_STATUS_IS_OK(status)) {
 266                 wbsrv_terminate_connection(wbconn,
 267                                            "failed to packet_send winbindd reply");
 268                 return status;
 269         }
 270         /* the call isn't needed any more */
 271         return status;
 272 }
 273
 274 NTSTATUS wbsrv_samba3_process(void *private, DATA_BLOB blob)
 275 {
 276         NTSTATUS status;
 277         struct wbsrv_connection *wbconn = talloc_get_type(private,
 278                                                           struct wbsrv_connection);
 279         struct wbsrv_samba3_call *call;
 280         status = wbsrv_samba3_pull_request(blob, wbconn, &call);
 281
 282         if (!NT_STATUS_IS_OK(status)) {
 283                 return status;
 284         }
 285
 286         status = wbsrv_samba3_handle_call(call);
 287
 288         if (!NT_STATUS_IS_OK(status)) {
 289                 talloc_free(call);
 290                 return status;
 291         }
 292
 293         if (call->flags & WBSRV_CALL_FLAGS_REPLY_ASYNC) {
 294                 return NT_STATUS_OK;
 295         }
 296
 297         status = wbsrv_samba3_send_reply(call);
 298         return status;
 299 }
 300