diff options
Diffstat (limited to 'source4/nbt_server/dgram/netlogon.c')
| -rw-r--r-- | source4/nbt_server/dgram/netlogon.c | 209 |
1 files changed, 209 insertions, 0 deletions
diff --git a/source4/nbt_server/dgram/netlogon.c b/source4/nbt_server/dgram/netlogon.c new file mode 100644 index 0000000000..5e95270b7d --- /dev/null +++ b/source4/nbt_server/dgram/netlogon.c @@ -0,0 +1,209 @@ +/* + Unix SMB/CIFS implementation. + + NBT datagram netlogon server + + Copyright (C) Andrew Tridgell 2005 + Copyright (C) Andrew Bartlett <abartlet@samba.org> 2008 + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 3 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see <http://www.gnu.org/licenses/>. +*/ + +#include "includes.h" +#include "nbt_server/nbt_server.h" +#include "lib/socket/socket.h" +#include "lib/ldb/include/ldb.h" +#include "dsdb/samdb/samdb.h" +#include "auth/auth.h" +#include "util/util_ldb.h" +#include "param/param.h" +#include "smbd/service_task.h" +#include "cldap_server/cldap_server.h" +#include "libcli/security/security.h" + +/* + reply to a GETDC request + */ +static void nbtd_netlogon_getdc(struct dgram_mailslot_handler *dgmslot, + struct nbtd_interface *iface, + struct nbt_dgram_packet *packet, + const struct socket_address *src, + struct nbt_netlogon_packet *netlogon) +{ + struct nbt_name *name = &packet->data.msg.dest_name; + struct nbtd_interface *reply_iface = nbtd_find_reply_iface(iface, src->addr, false); + struct nbt_netlogon_response_from_pdc *pdc; + const char *ref_attrs[] = {"nETBIOSName", NULL}; + struct ldb_message **ref_res; + struct ldb_context *samctx; + struct ldb_dn *partitions_basedn; + struct nbt_netlogon_response netlogon_response; + int ret; + + /* only answer getdc requests on the PDC or LOGON names */ + if (name->type != NBT_NAME_PDC && name->type != NBT_NAME_LOGON) { + return; + } + + samctx = iface->nbtsrv->sam_ctx; + + if (!samdb_is_pdc(samctx)) { + DEBUG(2, ("Not a PDC, so not processing LOGON_PRIMARY_QUERY\n")); + return; + } + + partitions_basedn = samdb_partitions_dn(samctx, packet); + + ret = gendb_search(samctx, packet, partitions_basedn, &ref_res, ref_attrs, + "(&(&(nETBIOSName=%s)(objectclass=crossRef))(ncName=*))", + name->name); + + if (ret != 1) { + DEBUG(2,("Unable to find domain reference '%s' in sam\n", name->name)); + return; + } + + /* setup a GETDC reply */ + ZERO_STRUCT(netlogon_response); + netlogon_response.response_type = NETLOGON_GET_PDC; + pdc = &netlogon_response.get_pdc; + + pdc->command = NETLOGON_RESPONSE_FROM_PDC; + pdc->pdc_name = lp_netbios_name(iface->nbtsrv->task->lp_ctx); + pdc->unicode_pdc_name = pdc->pdc_name; + pdc->domain_name = samdb_result_string(ref_res[0], "nETBIOSName", name->name);; + pdc->nt_version = 1; + pdc->lmnt_token = 0xFFFF; + pdc->lm20_token = 0xFFFF; + + dgram_mailslot_netlogon_reply(reply_iface->dgmsock, + packet, + lp_netbios_name(iface->nbtsrv->task->lp_ctx), + netlogon->req.pdc.mailslot_name, + &netlogon_response); +} + + +/* + reply to a ADS style GETDC request + */ +static void nbtd_netlogon_samlogon(struct dgram_mailslot_handler *dgmslot, + struct nbtd_interface *iface, + struct nbt_dgram_packet *packet, + const struct socket_address *src, + struct nbt_netlogon_packet *netlogon) +{ + struct nbt_name *name = &packet->data.msg.dest_name; + struct nbtd_interface *reply_iface = nbtd_find_reply_iface(iface, src->addr, false); + struct ldb_context *samctx; + const char *my_ip = reply_iface->ip_address; + struct dom_sid *sid; + struct nbt_netlogon_response netlogon_response; + NTSTATUS status; + + if (!my_ip) { + DEBUG(0, ("Could not obtain own IP address for datagram socket\n")); + return; + } + + /* only answer getdc requests on the PDC or LOGON names */ + if (name->type != NBT_NAME_PDC && name->type != NBT_NAME_LOGON) { + return; + } + + samctx = iface->nbtsrv->sam_ctx; + + if (netlogon->req.logon.sid_size) { + sid = &netlogon->req.logon.sid; + } else { + sid = NULL; + } + + status = fill_netlogon_samlogon_response(samctx, packet, NULL, name->name, sid, NULL, + netlogon->req.logon.user_name, netlogon->req.logon.acct_control, src->addr, + netlogon->req.logon.nt_version, iface->nbtsrv->task->lp_ctx, &netlogon_response.samlogon); + if (!NT_STATUS_IS_OK(status)) { + DEBUG(2,("NBT netlogon query failed domain=%s sid=%s version=%d - %s\n", + name->name, dom_sid_string(packet, sid), netlogon->req.logon.nt_version, nt_errstr(status))); + return; + } + + netlogon_response.response_type = NETLOGON_SAMLOGON; + + packet->data.msg.dest_name.type = 0; + + dgram_mailslot_netlogon_reply(reply_iface->dgmsock, + packet, + lp_netbios_name(iface->nbtsrv->task->lp_ctx), + netlogon->req.logon.mailslot_name, + &netlogon_response); +} + + +/* + handle incoming netlogon mailslot requests +*/ +void nbtd_mailslot_netlogon_handler(struct dgram_mailslot_handler *dgmslot, + struct nbt_dgram_packet *packet, + struct socket_address *src) +{ + NTSTATUS status = NT_STATUS_NO_MEMORY; + struct nbtd_interface *iface = + talloc_get_type(dgmslot->private, struct nbtd_interface); + struct nbt_netlogon_packet *netlogon = + talloc(dgmslot, struct nbt_netlogon_packet); + struct nbtd_iface_name *iname; + struct nbt_name *name = &packet->data.msg.dest_name; + + if (netlogon == NULL) goto failed; + + /* + see if the we are listening on the destination netbios name + */ + iname = nbtd_find_iname(iface, name, 0); + if (iname == NULL) { + status = NT_STATUS_BAD_NETWORK_NAME; + goto failed; + } + + DEBUG(2,("netlogon request to %s from %s:%d\n", + nbt_name_string(netlogon, name), src->addr, src->port)); + status = dgram_mailslot_netlogon_parse_request(dgmslot, netlogon, packet, netlogon); + if (!NT_STATUS_IS_OK(status)) goto failed; + + switch (netlogon->command) { + case LOGON_PRIMARY_QUERY: + nbtd_netlogon_getdc(dgmslot, iface, packet, + src, netlogon); + break; + case LOGON_SAM_LOGON_REQUEST: + nbtd_netlogon_samlogon(dgmslot, iface, packet, + src, netlogon); + break; + default: + DEBUG(2,("unknown netlogon op %d from %s:%d\n", + netlogon->command, src->addr, src->port)); + NDR_PRINT_DEBUG(nbt_netlogon_packet, netlogon); + break; + } + + talloc_free(netlogon); + return; + +failed: + DEBUG(2,("nbtd netlogon handler failed from %s:%d to %s - %s\n", + src->addr, src->port, nbt_name_string(netlogon, name), + nt_errstr(status))); + talloc_free(netlogon); +} |