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