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 "nsswitch/winbind_nss_config.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         case WINBINDD_GETPWNAM:
 128                 return wbsrv_samba3_getpwnam(s3call);
 129
 130         case WINBINDD_GETPWUID:
 131                 return wbsrv_samba3_getpwuid(s3call);
 132
 133         case WINBINDD_SETPWENT:
 134                 return wbsrv_samba3_setpwent(s3call);
 135
 136         case WINBINDD_GETPWENT:
 137                 return wbsrv_samba3_getpwent(s3call);
 138
 139         case WINBINDD_ENDPWENT:
 140                 return wbsrv_samba3_endpwent(s3call);
 141
 142         case WINBINDD_GETGRNAM:
 143                 return wbsrv_samba3_getgrnam(s3call);
 144
 145         case WINBINDD_GETGRGID:
 146                 return wbsrv_samba3_getgrgid(s3call);
 147
 148         case WINBINDD_GETGROUPS:
 149                 return wbsrv_samba3_getgroups(s3call);
 150
 151         case WINBINDD_SETGRENT:
 152                 return wbsrv_samba3_setgrent(s3call);
 153
 154         case WINBINDD_GETGRENT:
 155                 return wbsrv_samba3_getgrent(s3call);
 156
 157         case WINBINDD_ENDGRENT:
 158                 return wbsrv_samba3_endgrent(s3call);
 159
 160         case WINBINDD_SID_TO_UID:
 161         case WINBINDD_DUAL_SID2UID:
 162                 return wbsrv_samba3_sid2uid(s3call);
 163
 164         case WINBINDD_SID_TO_GID:
 165         case WINBINDD_DUAL_SID2GID:
 166                 return wbsrv_samba3_sid2gid(s3call);
 167
 168                 /* Unimplemented commands */
 169
 170         case WINBINDD_PAM_CHAUTHTOK:
 171         case WINBINDD_PAM_LOGOFF:
 172         case WINBINDD_PAM_CHNG_PSWD_AUTH_CRAP:
 173         case WINBINDD_LIST_USERS:
 174         case WINBINDD_LIST_GROUPS:
 175         case WINBINDD_LOOKUPRIDS:
 176         case WINBINDD_SIDS_TO_XIDS:
 177         case WINBINDD_UID_TO_SID:
 178         case WINBINDD_GID_TO_SID:
 179         case WINBINDD_ALLOCATE_UID:
 180         case WINBINDD_ALLOCATE_GID:
 181         case WINBINDD_SET_MAPPING:
 182         case WINBINDD_SET_HWM:
 183         case WINBINDD_DUMP_MAPS:
 184         case WINBINDD_CHECK_MACHACC:
 185         case WINBINDD_DOMAIN_INFO:
 186         case WINBINDD_SHOW_SEQUENCE:
 187         case WINBINDD_WINS_BYIP:
 188         case WINBINDD_WINS_BYNAME:
 189         case WINBINDD_GETGRLST:
 190         case WINBINDD_INIT_CONNECTION:
 191         case WINBINDD_DUAL_SIDS2XIDS:
 192         case WINBINDD_DUAL_UID2SID:
 193         case WINBINDD_DUAL_GID2SID:
 194         case WINBINDD_DUAL_SET_MAPPING:
 195         case WINBINDD_DUAL_SET_HWM:
 196         case WINBINDD_DUAL_DUMP_MAPS:
 197         case WINBINDD_DUAL_UID2NAME:
 198         case WINBINDD_DUAL_NAME2UID:
 199         case WINBINDD_DUAL_GID2NAME:
 200         case WINBINDD_DUAL_NAME2GID:
 201         case WINBINDD_DUAL_USERINFO:
 202         case WINBINDD_DUAL_GETSIDALIASES:
 203         case WINBINDD_CCACHE_NTLMAUTH:
 204         case WINBINDD_NUM_CMDS:
 205                 DEBUG(10, ("Unimplemented winbind samba3 request %d\n",
 206                            s3call->request.cmd));
 207                 break;
 208         }
 209
 210         s3call->response.result = WINBINDD_ERROR;
 211         return NT_STATUS_OK;
 212 }
 213
 214 static NTSTATUS wbsrv_samba3_push_reply(struct wbsrv_samba3_call *call, TALLOC_CTX *mem_ctx, DATA_BLOB *_blob)
 215 {
 216         DATA_BLOB blob;
 217         uint8_t *extra_data;
 218         size_t extra_data_len = 0;
 219
 220         extra_data = call->response.extra_data.data;
 221         if (extra_data) {
 222                 extra_data_len = call->response.length -
 223                         sizeof(call->response);
 224         }
 225
 226         blob = data_blob_talloc(mem_ctx, NULL, call->response.length);
 227         NT_STATUS_HAVE_NO_MEMORY(blob.data);
 228
 229         /* don't push real pointer values into sockets */
 230         if (extra_data) {
 231                 call->response.extra_data.data = (void *)0xFFFFFFFF;
 232         }
 233         memcpy(blob.data, &call->response, sizeof(call->response));
 234         /* set back the pointer */
 235         call->response.extra_data.data = extra_data;
 236
 237         if (extra_data) {
 238                 memcpy(blob.data + sizeof(call->response), extra_data, extra_data_len);
 239         }
 240
 241         *_blob = blob;
 242         return NT_STATUS_OK;
 243 }
 244
 245 /*
 246  * queue a wbsrv_call reply on a wbsrv_connection
 247  * NOTE: that this implies talloc_free(call),
 248  *       use talloc_reference(call) if you need it after
 249  *       calling wbsrv_queue_reply
 250  */
 251 NTSTATUS wbsrv_samba3_send_reply(struct wbsrv_samba3_call *call)
 252 {
 253         struct wbsrv_connection *wbconn = call->wbconn;
 254         DATA_BLOB rep;
 255         NTSTATUS status;
 256
 257         status = wbsrv_samba3_push_reply(call, call, &rep);
 258         NT_STATUS_NOT_OK_RETURN(status);
 259
 260         status = packet_send(call->wbconn->packet, rep);
 261
 262         talloc_free(call);
 263
 264         if (!NT_STATUS_IS_OK(status)) {
 265                 wbsrv_terminate_connection(wbconn,
 266                                            "failed to packet_send winbindd reply");
 267                 return status;
 268         }
 269         /* the call isn't needed any more */
 270         return status;
 271 }
 272
 273 NTSTATUS wbsrv_samba3_process(void *private, DATA_BLOB blob)
 274 {
 275         NTSTATUS status;
 276         struct wbsrv_connection *wbconn = talloc_get_type(private,
 277                                                           struct wbsrv_connection);
 278         struct wbsrv_samba3_call *call;
 279         status = wbsrv_samba3_pull_request(blob, wbconn, &call);
 280
 281         if (!NT_STATUS_IS_OK(status)) {
 282                 return status;
 283         }
 284
 285         status = wbsrv_samba3_handle_call(call);
 286
 287         if (!NT_STATUS_IS_OK(status)) {
 288                 talloc_free(call);
 289                 return status;
 290         }
 291
 292         if (call->flags & WBSRV_CALL_FLAGS_REPLY_ASYNC) {
 293                 return NT_STATUS_OK;
 294         }
 295
 296         status = wbsrv_samba3_send_reply(call);
 297         return status;
 298 }
 299