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_REMOVE_MAPPING:
 187         case WINBINDD_SET_HWM:
 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_DSGETDCNAME:
 194         case WINBINDD_INIT_CONNECTION:
 195         case WINBINDD_DUAL_SIDS2XIDS:
 196         case WINBINDD_DUAL_SET_MAPPING:
 197         case WINBINDD_DUAL_REMOVE_MAPPING:
 198         case WINBINDD_DUAL_SET_HWM:
 199         case WINBINDD_DUAL_USERINFO:
 200         case WINBINDD_DUAL_GETSIDALIASES:
 201         case WINBINDD_CCACHE_NTLMAUTH:
 202         case WINBINDD_NUM_CMDS:
 203                 DEBUG(10, ("Unimplemented winbind samba3 request %d\n",
 204                            s3call->request.cmd));
 205                 break;
 206         }
 207
 208         s3call->response.result = WINBINDD_ERROR;
 209         return NT_STATUS_OK;
 210 }
 211
 212 static NTSTATUS wbsrv_samba3_push_reply(struct wbsrv_samba3_call *call, TALLOC_CTX *mem_ctx, DATA_BLOB *_blob)
 213 {
 214         DATA_BLOB blob;
 215         uint8_t *extra_data;
 216         size_t extra_data_len = 0;
 217
 218         extra_data = (uint8_t *)call->response.extra_data.data;
 219         if (extra_data != NULL) {
 220                 extra_data_len = call->response.length -
 221                         sizeof(call->response);
 222         }
 223
 224         blob = data_blob_talloc(mem_ctx, NULL, call->response.length);
 225         NT_STATUS_HAVE_NO_MEMORY(blob.data);
 226
 227         /* don't push real pointer values into sockets */
 228         if (extra_data) {
 229                 call->response.extra_data.data = (void *)0xFFFFFFFF;
 230         }
 231         memcpy(blob.data, &call->response, sizeof(call->response));
 232         /* set back the pointer */
 233         call->response.extra_data.data = extra_data;
 234
 235         if (extra_data) {
 236                 memcpy(blob.data + sizeof(call->response), extra_data, extra_data_len);
 237         }
 238
 239         *_blob = blob;
 240         return NT_STATUS_OK;
 241 }
 242
 243 /*
 244  * queue a wbsrv_call reply on a wbsrv_connection
 245  * NOTE: that this implies talloc_free(call),
 246  *       use talloc_reference(call) if you need it after
 247  *       calling wbsrv_queue_reply
 248  */
 249 NTSTATUS wbsrv_samba3_send_reply(struct wbsrv_samba3_call *call)
 250 {
 251         struct wbsrv_connection *wbconn = call->wbconn;
 252         DATA_BLOB rep;
 253         NTSTATUS status;
 254
 255         status = wbsrv_samba3_push_reply(call, call, &rep);
 256         NT_STATUS_NOT_OK_RETURN(status);
 257
 258         status = packet_send(call->wbconn->packet, rep);
 259
 260         talloc_free(call);
 261
 262         if (!NT_STATUS_IS_OK(status)) {
 263                 wbsrv_terminate_connection(wbconn,
 264                                            "failed to packet_send winbindd reply");
 265                 return status;
 266         }
 267         /* the call isn't needed any more */
 268         return status;
 269 }
 270
 271 NTSTATUS wbsrv_samba3_process(void *private, DATA_BLOB blob)
 272 {
 273         NTSTATUS status;
 274         struct wbsrv_connection *wbconn = talloc_get_type(private,
 275                                                           struct wbsrv_connection);
 276         struct wbsrv_samba3_call *call;
 277         status = wbsrv_samba3_pull_request(blob, wbconn, &call);
 278
 279         if (!NT_STATUS_IS_OK(status)) {
 280                 return status;
 281         }
 282
 283         status = wbsrv_samba3_handle_call(call);
 284
 285         if (!NT_STATUS_IS_OK(status)) {
 286                 talloc_free(call);
 287                 return status;
 288         }
 289
 290         if (call->flags & WBSRV_CALL_FLAGS_REPLY_ASYNC) {
 291                 return NT_STATUS_OK;
 292         }
 293
 294         status = wbsrv_samba3_send_reply(call);
 295         return status;
 296 }
 297