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/*
Unix SMB/CIFS implementation.
WINS Replication server
Copyright (C) Stefan Metzmacher 2005
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 2 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, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include "includes.h"
#include "dlinklist.h"
#include "lib/events/events.h"
#include "lib/socket/socket.h"
#include "smbd/service_task.h"
#include "smbd/service_stream.h"
#include "lib/messaging/irpc.h"
#include "librpc/gen_ndr/ndr_winsrepl.h"
#include "wrepl_server/wrepl_server.h"
static NTSTATUS wreplsrv_in_start_association(struct wreplsrv_in_call *call)
{
struct wrepl_start *start = &call->req_packet.message.start;
struct wrepl_start *start_reply = &call->rep_packet.message.start_reply;
if (call->req_packet.opcode & WREPL_OPCODE_BITS) {
/*
*if the assoc_ctx doesn't match ignore the packet
*/
if ((call->req_packet.assoc_ctx != call->wreplconn->assoc_ctx.our_ctx)
&& (call->req_packet.assoc_ctx != 0)) {
return ERROR_INVALID_PARAMETER;
}
} else {
call->wreplconn->assoc_ctx.our_ctx = WREPLSRV_INVALID_ASSOC_CTX;
return NT_STATUS_OK;
}
if (start->minor_version != 2 || start->major_version != 5) {
/* w2k terminate the connection if the versions doesn't match */
return NT_STATUS_UNKNOWN_REVISION;
}
call->wreplconn->assoc_ctx.stopped = False;
call->wreplconn->assoc_ctx.our_ctx = WREPLSRV_VALID_ASSOC_CTX;
call->wreplconn->assoc_ctx.peer_ctx = start->assoc_ctx;
call->rep_packet.mess_type = WREPL_START_ASSOCIATION_REPLY;
start_reply->assoc_ctx = call->wreplconn->assoc_ctx.our_ctx;
start_reply->minor_version = 2;
start_reply->major_version = 5;
return NT_STATUS_OK;
}
static NTSTATUS wreplsrv_in_stop_assoc_ctx(struct wreplsrv_in_call *call)
{
struct wrepl_stop *stop_out = &call->rep_packet.message.stop;
call->wreplconn->assoc_ctx.stopped = True;
call->rep_packet.mess_type = WREPL_STOP_ASSOCIATION;
stop_out->reason = 4;
return NT_STATUS_OK;
}
static NTSTATUS wreplsrv_in_stop_association(struct wreplsrv_in_call *call)
{
/*
* w2k only check the assoc_ctx if the opcode has the 0x00007800 bits are set
*/
if (call->req_packet.opcode & WREPL_OPCODE_BITS) {
/*
*if the assoc_ctx doesn't match ignore the packet
*/
if (call->req_packet.assoc_ctx != call->wreplconn->assoc_ctx.our_ctx) {
return ERROR_INVALID_PARAMETER;
}
/* when the opcode bits are set the connection should be directly terminated */
return NT_STATUS_CONNECTION_RESET;
}
if (call->wreplconn->assoc_ctx.stopped) {
/* this causes the connection to be directly terminated */
return NT_STATUS_CONNECTION_RESET;
}
/* this will cause to not receive packets anymore and terminate the connection if the reply is send */
call->wreplconn->terminate = True;
return wreplsrv_in_stop_assoc_ctx(call);
}
static NTSTATUS wreplsrv_in_replication(struct wreplsrv_in_call *call)
{
struct wrepl_replication *repl_in = &call->req_packet.message.replication;
/*
* w2k only check the assoc_ctx if the opcode has the 0x00007800 bits are set
*/
if (call->req_packet.opcode & WREPL_OPCODE_BITS) {
/*
*if the assoc_ctx doesn't match ignore the packet
*/
if (call->req_packet.assoc_ctx != call->wreplconn->assoc_ctx.our_ctx) {
return ERROR_INVALID_PARAMETER;
}
}
if (!call->wreplconn->partner) {
return wreplsrv_in_stop_assoc_ctx(call);
}
switch (repl_in->command) {
case WREPL_REPL_TABLE_QUERY:
break;
case WREPL_REPL_TABLE_REPLY:
break;
case WREPL_REPL_SEND_REQUEST:
break;
case WREPL_REPL_SEND_REPLY:
break;
case WREPL_REPL_UPDATE:
break;
case WREPL_REPL_5:
break;
case WREPL_REPL_INFORM:
break;
case WREPL_REPL_9:
break;
}
return ERROR_INVALID_PARAMETER;
}
static NTSTATUS wreplsrv_in_invalid_assoc_ctx(struct wreplsrv_in_call *call)
{
struct wrepl_start *start = &call->rep_packet.message.start;
call->rep_packet.opcode = 0x00008583;
call->rep_packet.assoc_ctx = 0;
call->rep_packet.mess_type = WREPL_START_ASSOCIATION;
start->assoc_ctx = 0x0000000a;
start->minor_version = 0x0001;
start->major_version = 0x0000;
call->rep_packet.padding = data_blob_talloc(call, NULL, 4);
memset(call->rep_packet.padding.data, '\0', call->rep_packet.padding.length);
return NT_STATUS_OK;
}
NTSTATUS wreplsrv_in_call(struct wreplsrv_in_call *call)
{
NTSTATUS status;
if (!(call->req_packet.opcode & WREPL_OPCODE_BITS)
&& (call->wreplconn->assoc_ctx.our_ctx == WREPLSRV_INVALID_ASSOC_CTX)) {
return wreplsrv_in_invalid_assoc_ctx(call);
}
switch (call->req_packet.mess_type) {
case WREPL_START_ASSOCIATION:
status = wreplsrv_in_start_association(call);
break;
case WREPL_START_ASSOCIATION_REPLY:
/* this is not valid here, so we ignore it */
return ERROR_INVALID_PARAMETER;
case WREPL_STOP_ASSOCIATION:
status = wreplsrv_in_stop_association(call);
break;
case WREPL_REPLICATION:
status = wreplsrv_in_replication(call);
break;
default:
/* everythingelse is also not valid here, so we ignore it */
return ERROR_INVALID_PARAMETER;
}
if (call->wreplconn->assoc_ctx.our_ctx == WREPLSRV_INVALID_ASSOC_CTX) {
return wreplsrv_in_invalid_assoc_ctx(call);
}
if (NT_STATUS_IS_OK(status)) {
call->rep_packet.opcode = WREPL_OPCODE_BITS;
call->rep_packet.assoc_ctx = call->wreplconn->assoc_ctx.peer_ctx;
}
return status;
}
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