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 2 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, write to the Free Software
  20    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  21 */
  22
  23 #include "includes.h"
  24 #include "nsswitch/winbind_nss_config.h"
  25 #include "nsswitch/winbindd_nss.h"
  26 #include "winbind/wb_server.h"
  27 #include "smbd/service_stream.h"
  28 #include "lib/stream/packet.h"
  29
  30 /*
  31   work out if a packet is complete for protocols that use a 32 bit host byte
  32   order length
  33 */
  34 NTSTATUS wbsrv_samba3_packet_full_request(void *private, DATA_BLOB blob, size_t *size)
  35 {
  36         uint32_t *len;
  37         if (blob.length < 4) {
  38                 return STATUS_MORE_ENTRIES;
  39         }
  40         len = (uint32_t *)blob.data;
  41         *size = (*len);
  42         if (*size > blob.length) {
  43                 return STATUS_MORE_ENTRIES;
  44         }
  45         return NT_STATUS_OK;
  46 }
  47
  48
  49 NTSTATUS wbsrv_samba3_pull_request(DATA_BLOB blob, struct wbsrv_connection *wbconn,
  50                                    struct wbsrv_samba3_call **_call)
  51 {
  52         struct wbsrv_samba3_call *call;
  53
  54         if (blob.length != sizeof(call->request)) {
  55                 DEBUG(0,("wbsrv_samba3_pull_request: invalid blob length %lu should be %lu\n"
  56                          " make sure you use the correct winbind client tools!\n",
  57                          (long)blob.length, (long)sizeof(call->request)));
  58                 return NT_STATUS_INVALID_PARAMETER;
  59         }
  60
  61         call = talloc_zero(wbconn, struct wbsrv_samba3_call);
  62         NT_STATUS_HAVE_NO_MEMORY(call);
  63
  64         /* the packet layout is the same as the in memory layout of the request, so just copy it */
  65         memcpy(&call->request, blob.data, sizeof(call->request));
  66
  67         call->wbconn = wbconn;
  68         call->event_ctx = call->wbconn->conn->event.ctx;
  69
  70         *_call = call;
  71         return NT_STATUS_OK;
  72 }
  73
  74 NTSTATUS wbsrv_samba3_handle_call(struct wbsrv_samba3_call *s3call)
  75 {
  76         DEBUG(10, ("Got winbind samba3 request %d\n", s3call->request.cmd));
  77
  78         s3call->response.length = sizeof(s3call->response);
  79
  80         switch(s3call->request.cmd) {
  81         case WINBINDD_INTERFACE_VERSION:
  82                 return wbsrv_samba3_interface_version(s3call);
  83
  84 #if 0
  85         case WINBINDD_CHECK_MACHACC:
  86                 return wbsrv_samba3_check_machacc(s3call);
  87 #endif
  88
  89         case WINBINDD_PING:
  90                 return wbsrv_samba3_ping(s3call);
  91
  92         case WINBINDD_INFO:
  93                 return wbsrv_samba3_info(s3call);
  94
  95         case WINBINDD_DOMAIN_NAME:
  96                 return wbsrv_samba3_domain_name(s3call);
  97
  98         case WINBINDD_NETBIOS_NAME:
  99                 return wbsrv_samba3_netbios_name(s3call);
 100
 101         case WINBINDD_PRIV_PIPE_DIR:
 102                 return wbsrv_samba3_priv_pipe_dir(s3call);
 103
 104         case WINBINDD_LOOKUPNAME:
 105                 return wbsrv_samba3_lookupname(s3call);
 106
 107         case WINBINDD_LOOKUPSID:
 108                 return wbsrv_samba3_lookupsid(s3call);
 109
 110         case WINBINDD_PAM_AUTH:
 111                 return wbsrv_samba3_pam_auth(s3call);
 112
 113         case WINBINDD_PAM_AUTH_CRAP:
 114                 return wbsrv_samba3_pam_auth_crap(s3call);
 115
 116         case WINBINDD_GETDCNAME:
 117                 return wbsrv_samba3_getdcname(s3call);
 118
 119         case WINBINDD_GETUSERDOMGROUPS:
 120                 return wbsrv_samba3_userdomgroups(s3call);
 121
 122         case WINBINDD_GETUSERSIDS:
 123                 return wbsrv_samba3_usersids(s3call);
 124
 125         case WINBINDD_LIST_TRUSTDOM:
 126                 return wbsrv_samba3_list_trustdom(s3call);
 127
 128         case WINBINDD_GETPWNAM:
 129                 return wbsrv_samba3_getpwnam(s3call);
 130
 131         case WINBINDD_GETPWUID:
 132                 return wbsrv_samba3_getpwuid(s3call);
 133
 134         case WINBINDD_SETPWENT:
 135                 return wbsrv_samba3_setpwent(s3call);
 136
 137         case WINBINDD_GETPWENT:
 138                 return wbsrv_samba3_getpwent(s3call);
 139
 140         case WINBINDD_ENDPWENT:
 141                 return wbsrv_samba3_endpwent(s3call);
 142
 143         case WINBINDD_GETGRNAM:
 144                 return wbsrv_samba3_getgrnam(s3call);
 145
 146         case WINBINDD_GETGRGID:
 147                 return wbsrv_samba3_getgrgid(s3call);
 148
 149         case WINBINDD_GETGROUPS:
 150                 return wbsrv_samba3_getgroups(s3call);
 151
 152         case WINBINDD_SETGRENT:
 153                 return wbsrv_samba3_setgrent(s3call);
 154
 155         case WINBINDD_GETGRENT:
 156                 return wbsrv_samba3_getgrent(s3call);
 157
 158         case WINBINDD_ENDGRENT:
 159                 return wbsrv_samba3_endgrent(s3call);
 160
 161                 /* Unimplemented commands */
 162
 163         case WINBINDD_PAM_CHAUTHTOK:
 164         case WINBINDD_PAM_LOGOFF:
 165         case WINBINDD_PAM_CHNG_PSWD_AUTH_CRAP:
 166         case WINBINDD_LIST_USERS:
 167         case WINBINDD_LIST_GROUPS:
 168         case WINBINDD_LOOKUPRIDS:
 169         case WINBINDD_SID_TO_UID:
 170         case WINBINDD_SID_TO_GID:
 171         case WINBINDD_SIDS_TO_XIDS:
 172         case WINBINDD_UID_TO_SID:
 173         case WINBINDD_GID_TO_SID:
 174         case WINBINDD_ALLOCATE_UID:
 175         case WINBINDD_ALLOCATE_GID:
 176         case WINBINDD_SET_MAPPING:
 177         case WINBINDD_SET_HWM:
 178         case WINBINDD_DUMP_MAPS:
 179         case WINBINDD_CHECK_MACHACC:
 180         case WINBINDD_DOMAIN_INFO:
 181         case WINBINDD_SHOW_SEQUENCE:
 182         case WINBINDD_WINS_BYIP:
 183         case WINBINDD_WINS_BYNAME:
 184         case WINBINDD_GETGRLST:
 185         case WINBINDD_INIT_CONNECTION:
 186         case WINBINDD_DUAL_SID2UID:
 187         case WINBINDD_DUAL_SID2GID:
 188         case WINBINDD_DUAL_SIDS2XIDS:
 189         case WINBINDD_DUAL_UID2SID:
 190         case WINBINDD_DUAL_GID2SID:
 191         case WINBINDD_DUAL_SET_MAPPING:
 192         case WINBINDD_DUAL_SET_HWM:
 193         case WINBINDD_DUAL_DUMP_MAPS:
 194         case WINBINDD_DUAL_UID2NAME:
 195         case WINBINDD_DUAL_NAME2UID:
 196         case WINBINDD_DUAL_GID2NAME:
 197         case WINBINDD_DUAL_NAME2GID:
 198         case WINBINDD_DUAL_USERINFO:
 199         case WINBINDD_DUAL_GETSIDALIASES:
 200         case WINBINDD_CCACHE_NTLMAUTH:
 201         case WINBINDD_NUM_CMDS:
 202                 DEBUG(10, ("Unimplemented winbind samba3 request %d\n",
 203                            s3call->request.cmd));
 204                 break;
 205         }
 206
 207         s3call->response.result = WINBINDD_ERROR;
 208         return NT_STATUS_OK;
 209 }
 210
 211 static NTSTATUS wbsrv_samba3_push_reply(struct wbsrv_samba3_call *call, TALLOC_CTX *mem_ctx, DATA_BLOB *_blob)
 212 {
 213         DATA_BLOB blob;
 214         uint8_t *extra_data;
 215         size_t extra_data_len = 0;
 216
 217         extra_data = call->response.extra_data.data;
 218         if (extra_data) {
 219                 extra_data_len = call->response.length -
 220                         sizeof(call->response);
 221         }
 222
 223         blob = data_blob_talloc(mem_ctx, NULL, call->response.length);
 224         NT_STATUS_HAVE_NO_MEMORY(blob.data);
 225
 226         /* don't push real pointer values into sockets */
 227         if (extra_data) {
 228                 call->response.extra_data.data = (void *)0xFFFFFFFF;
 229         }
 230         memcpy(blob.data, &call->response, sizeof(call->response));
 231         /* set back the pointer */
 232         call->response.extra_data.data = extra_data;
 233
 234         if (extra_data) {
 235                 memcpy(blob.data + sizeof(call->response), extra_data, extra_data_len);
 236         }
 237
 238         *_blob = blob;
 239         return NT_STATUS_OK;
 240 }
 241
 242 /*
 243  * queue a wbsrv_call reply on a wbsrv_connection
 244  * NOTE: that this implies talloc_free(call),
 245  *       use talloc_reference(call) if you need it after
 246  *       calling wbsrv_queue_reply
 247  */
 248 NTSTATUS wbsrv_samba3_send_reply(struct wbsrv_samba3_call *call)
 249 {
 250         struct wbsrv_connection *wbconn = call->wbconn;
 251         DATA_BLOB rep;
 252         NTSTATUS status;
 253
 254         status = wbsrv_samba3_push_reply(call, call, &rep);
 255         NT_STATUS_NOT_OK_RETURN(status);
 256
 257         status = packet_send(call->wbconn->packet, rep);
 258
 259         talloc_free(call);
 260
 261         if (!NT_STATUS_IS_OK(status)) {
 262                 wbsrv_terminate_connection(wbconn,
 263                                            "failed to packet_send winbindd reply");
 264                 return status;
 265         }
 266         /* the call isn't needed any more */
 267         return status;
 268 }
 269
 270 NTSTATUS wbsrv_samba3_process(void *private, DATA_BLOB blob)
 271 {
 272         NTSTATUS status;
 273         struct wbsrv_connection *wbconn = talloc_get_type(private,
 274                                                           struct wbsrv_connection);
 275         struct wbsrv_samba3_call *call;
 276         status = wbsrv_samba3_pull_request(blob, wbconn, &call);
 277
 278         if (!NT_STATUS_IS_OK(status)) {
 279                 return status;
 280         }
 281
 282         status = wbsrv_samba3_handle_call(call);
 283
 284         if (!NT_STATUS_IS_OK(status)) {
 285                 talloc_free(call);
 286                 return status;
 287         }
 288
 289         if (call->flags & WBSRV_CALL_FLAGS_REPLY_ASYNC) {
 290                 return NT_STATUS_OK;
 291         }
 292
 293         status = wbsrv_samba3_send_reply(call);
 294         return status;
 295 }
 296