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Unify lookup by address and by channelNo; add method to check consistency of BT address.

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This commit is contained in:
ehouse 2008-01-07 01:10:43 +00:00
parent b333476d48
commit 3374849111
2 changed files with 40 additions and 29 deletions
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63
xwords4/common/comms.c
View file

@ -163,13 +163,12 @@ static AddressRecord* rememberChannelAddress( CommsCtxt* comms,
static void updateChannelAddress( AddressRecord* rec, const CommsAddrRec* addr );
static XP_Bool channelToAddress( CommsCtxt* comms, XP_PlayerAddr channelNo,
const CommsAddrRec** addr );
static AddressRecord* getRecordFor( CommsCtxt* comms,
static AddressRecord* getRecordFor( CommsCtxt* comms, const CommsAddrRec* addr,
XP_PlayerAddr channelNo );
static XP_S16 sendMsg( CommsCtxt* comms, MsgQueueElem* elem );
static void addToQueue( CommsCtxt* comms, MsgQueueElem* newMsgElem );
static XP_U16 countAddrRecs( const CommsCtxt* comms );
static void sendConnect( CommsCtxt* comms );
static AddressRecord* addrToRecord( CommsCtxt* comms, const CommsAddrRec* adr );
#ifdef XWFEATURE_RELAY
static void relayConnect( CommsCtxt* comms );
@ -611,6 +610,25 @@ comms_getInitialAddr( CommsAddrRec* addr )
#endif
} /* comms_getInitialAddr */
XP_Bool
comms_checkAddr( DeviceRole role, const CommsAddrRec* addr, XW_UtilCtxt* util )
{
XP_Bool ok = XP_TRUE;
/* make sure the user's given us enough information to make a connection */
if ( role == SERVER_ISCLIENT ) {
if ( addr->conType == COMMS_CONN_BT ) {
XP_U32 empty = 0L; /* check four bytes to save some code */
if ( !XP_MEMCMP( &empty, &addr->u.bt.btAddr, sizeof(empty) ) ) {
ok = XP_FALSE;
if ( !!util ) {
util_userError( util, STR_NEED_BT_HOST_ADDR );
}
}
}
}
return ok;
} /* comms_checkAddr */
CommsConnType
comms_getConType( const CommsCtxt* comms )
{
@ -684,7 +702,7 @@ XP_S16
comms_send( CommsCtxt* comms, XWStreamCtxt* stream )
{
XP_PlayerAddr channelNo = stream_getAddress( stream );
AddressRecord* rec = getRecordFor( comms, channelNo );
AddressRecord* rec = getRecordFor( comms, NULL, channelNo );
MsgID msgID = (!!rec)? ++rec->nextMsgID : 0;
MsgQueueElem* elem;
XP_S16 result = -1;
@ -758,7 +776,7 @@ removeFromQueue( CommsCtxt* comms, XP_PlayerAddr channelNo, MsgID msgID )
XP_STATUSF( "%s: remove msgs <= " XP_LD " for channel %d (queueLen: %d)",
__func__, msgID, channelNo, comms->queueLen );
if ( (channelNo == 0) || !!getRecordFor(comms, channelNo) ) {
if ( (channelNo == 0) || !!getRecordFor(comms, NULL, channelNo) ) {
MsgQueueElem dummy;
MsgQueueElem* keep = &dummy;
MsgQueueElem* elem;
@ -1012,17 +1030,18 @@ preProcess( CommsCtxt* comms, XWStreamCtxt* stream,
} /* preProcess */
static AddressRecord*
addrToRecord( CommsCtxt* comms, const CommsAddrRec* addr )
getRecordFor( CommsCtxt* comms, const CommsAddrRec* addr,
XP_PlayerAddr channelNo )
{
CommsConnType conType;
AddressRecord* rec;
XP_Bool matched = XP_FALSE;
XP_ASSERT( !!addr );
/* Use addr if we have it. Otherwise use channelNo if non-0 */
conType = !!addr? addr->conType : COMMS_CONN_NONE;
conType = addr->conType;
for ( rec = comms->recs; !!rec; rec = rec->next ) {
XP_ASSERT( conType == rec->addr.conType );
XP_ASSERT( !addr || (conType == rec->addr.conType) );
switch( conType ) {
case COMMS_CONN_RELAY:
if ( (addr->u.ip_relay.ipAddr == rec->addr.u.ip_relay.ipAddr)
@ -1044,6 +1063,9 @@ addrToRecord( CommsCtxt* comms, const CommsAddrRec* addr )
break;
case COMMS_CONN_IR: /* no way to test */
break;
case COMMS_CONN_NONE:
matched = channelNo == rec->channelNo;
break;
default:
XP_ASSERT(0);
break;
@ -1079,7 +1101,7 @@ validateInitialMessage( CommsCtxt* comms, XP_Bool hasPayload,
{
#ifdef COMMS_HEARTBEAT
XP_Bool addRec = XP_FALSE;
AddressRecord* rec = addrToRecord( comms, addr );
AddressRecord* rec = getRecordFor( comms, addr, *channelNo );
LOG_FUNC();
if ( hasPayload ) {
@ -1112,7 +1134,7 @@ validateInitialMessage( CommsCtxt* comms, XP_Bool hasPayload,
LOG_RETURNF( "%lx", rec );
return rec;
#else
AddressRecord* rec = addrToRecord( comms, addr );
AddressRecord* rec = getRecordFor( comms, addr, *channelNo );
if ( !!rec ) {
rec = NULL; /* reject: we've already seen init message on channel */
} else {
@ -1140,7 +1162,7 @@ validateChannelMessage( CommsCtxt* comms, const CommsAddrRec* addr,
AddressRecord* rec;
LOG_FUNC();
rec = getRecordFor( comms, channelNo );
rec = getRecordFor( comms, NULL, channelNo );
if ( !!rec ) {
removeFromQueue( comms, channelNo, lastMsgRcd );
if ( msgID == rec->lastMsgRcd + 1 ) {
@ -1393,7 +1415,7 @@ rememberChannelAddress( CommsCtxt* comms, XP_PlayerAddr channelNo,
XWHostID hostID, const CommsAddrRec* addr )
{
AddressRecord* recs = NULL;
recs = getRecordFor( comms, channelNo );
recs = getRecordFor( comms, NULL, channelNo );
if ( !recs ) {
/* not found; add a new entry */
recs = (AddressRecord*)XP_MALLOC( comms->mpool, sizeof(*recs) );
@ -1430,27 +1452,12 @@ static XP_Bool
channelToAddress( CommsCtxt* comms, XP_PlayerAddr channelNo,
const CommsAddrRec** addr )
{
AddressRecord* recs = getRecordFor( comms, channelNo );
AddressRecord* recs = getRecordFor( comms, NULL, channelNo );
XP_Bool found = !!recs;
*addr = found? &recs->addr : NULL;
return found;
} /* channelToAddress */
static AddressRecord*
getRecordFor( CommsCtxt* comms, XP_PlayerAddr channelNo )
{
AddressRecord* recs = NULL;
if ( channelNo != CHANNEL_NONE ) {
for ( recs = comms->recs; !!recs; recs = recs->next ) {
if ( recs->channelNo == channelNo ) {
break;
}
}
}
return recs;
} /* getRecordFor */
static XP_U16
countAddrRecs( const CommsCtxt* comms )
{

6
xwords4/common/comms.h
View file

@ -23,6 +23,7 @@
#include "comtypes.h"
#include "mempool.h"
#include "xwrelay.h"
#include "server.h"
EXTERN_C_START
@ -103,8 +104,11 @@ void comms_destroy( CommsCtxt* comms );
void comms_setConnID( CommsCtxt* comms, XP_U32 connID );
/* "static" method provides default when no comms present */
/* "static" methods work when no comms present */
void comms_getInitialAddr( CommsAddrRec* addr );
XP_Bool comms_checkAddr( DeviceRole role, const CommsAddrRec* addr,
XW_UtilCtxt* util );
void comms_getAddr( const CommsCtxt* comms, CommsAddrRec* addr );
void comms_setAddr( CommsCtxt* comms, const CommsAddrRec* addr );