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mac-rom/OS/PPC/PPCLocal.c
Elliot Nunn 4325cdcc78 Bring in CubeE sources 
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2017-12-26 09:52:23 +08:00

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/*
File: PPCLocal.c
Contains: PPC Local Session Management Calls
Written by: Sangam
Copyright: © 1989-1992 by Apple Computer, Inc., all rights reserved.
Change History (most recent first):
<22> 4/14/92 BBM <JSM>: Remove unfinished PPC code that is under the contitional
ÒTheFututeÓ, and remove the conditional ÒCubeEÓ since that is
reality. Remove conditionals, since all they do is confuse.
<21> 10/4/91 JSM Change PsychoticFarmerOrLater conditionals to TheFuture.
<20> 9/29/91 DTY Conditionalize <17> thru <19> out of CubeE.
<19> 6/26/91 EMT Add support to kill PPCStart calls
<18> 6/10/91 EMT Optimize code for size
<17> 6/4/91 EMT Roll in StoreAndForward Revisions
<16> 11/6/90 EMT Fix warning
<15> 10/30/90 EMT Seperate Read and Write PB's into their own queue's.
<14> 10/18/90 EMT Fix functions to have prototype declarations
<13> 10/11/90 EMT add conditional around debug code
<13> 10/11/90 EMT add conditional around debug code
<12> 9/21/90 EMT Update constants, types, and field names as dictated by
PPCToolBox.h
<11> 9/4/90 EMT Roll in Eric's changes
<10> 6/28/90 S To Improve Dynamic allocation of sessions.
<9> 4/17/90 JSM Add prototype for AvoidDuplicateCompletion, fix bug where
AvoidDuplicateCompletion was being called with extra parameter.
<8> 3/20/90 S Bug Fix. Returning the wrong user name.
<7> 2/27/90 S ErrorCode Fix.
<6> 2/20/90 S Some ErrorCode Changes.
<5> 2/13/90 S Some Bug Fix.
<4> 2/8/90 S Minor Bug Fix.
<3> 1/30/90 S Bug Fixes.
<1.4> 10/12/89 CCH Fixed header
<¥1.3> 10/12/89 CVC Added Access Control
<1.2> 10/2/89 CVC Fixed a big in PPCInform call.
<1.1> 9/25/89 ss Added Support for 'more' in PPCWrite calls.
<1.0> 9/18/89 CVC Adding PPC toolbox for the first time.
Old Revision History:
06/05/89 Sangam New Today
07/20/89 Sangam 1.0d2 release today!
08/10/89 Sangam Made changes to accomadate new IPCListPorts call
08/10/89 Sangam Added userEntry filed for read/write headers
09/08/89 Sangam Changed the errorcode for PPCReject to rejectErr
09/11/89 Sangam Fixed the problem of completion not being called(some times)
in accept and reject session functions.
09/15/89 Sangam Changed the errorcode to rejectErr (when inform is not outstanding)
09/19/89 Sangam Returning the Right port name portname at PPCInform Call to build special
version for Jay.
09/21/89 Sangam Changed the interface to GetPortNames call
09/22/89 Sangam Removed destportName and destlocname from session data structure
09/25/89 Sangam Added Support for 'more' in PPCWrite calls.
01/04/90 Sangam Bug fix for actualLength in read/write calls.
*/
#include "PPCCommon.h"
#include <String.h>
/*----------------------------------------------------------------------------------------
Prototypes of functions used only in this file.
----------------------------------------------------------------------------------------*/
STATIC void LocalTransfer(CommonSessionParamsPtr writeSess,
CommonSessionParamsPtr readSess);
/*----------------------------------------------------------------------------------------
GetLocSess returns the a new local session table.
----------------------------------------------------------------------------------------*/
STATIC LocalIPCParamsPtr GetLocSess(PPCGlobalParamsPtr ppcglobPtr)
{
LocalIPCParamsPtr theSess;
if(theSess = ServeQueue(&ppcglobPtr->freeLocSessQueue))
{
memset(theSess,0,sizeof(LocalIPCParams));
theSess->sessUse = locUse;
EnQueue(theSess,&ppcglobPtr->LocSessQueue);
}
return(theSess);
}
STATIC void FreeLocSess(LocalIPCParamsPtr sessPtr)
{
PPCGlobalParamsPtr ppcglobPtr;
PPCPortEntryPtr portPtr;
ppcglobPtr = (PPCGlobalParamsPtr)getGlobal();
portPtr = sessPtr->portEntry;
DeleteFromQueue(&ppcglobPtr->LocSessQueue,(unsigned long)sessPtr,PointerCompare);
if(portPtr) // <20> if this session belongs to a port.
--portPtr->sessCount; // <20> update the port table.
EnQueue(sessPtr,&ppcglobPtr->freeLocSessQueue);
}
void StartLocalSession(PPCStartPBPtr startPB,
PPCPortEntryPtr srcportPtr,
PPCGlobalParamsPtr ppcglobPtr)
{
PPCPortEntryPtr destportPtr;
CommonSessionParamsPtr srcSess, destSess;
PPCInformPBPtr informPB;
PBWriteResPtr res; // <20>
unsigned short i; // <20>
unsigned char *temp; // <20>
res =(PBWriteResPtr)(startPB->Reserved);
if (!(destportPtr = CheckPortName(startPB->portName, ppcglobPtr)))
{
CompleteWithResult(startPB,destPortErr);
return;
}
if (!(informPB = ServeQueue(&destportPtr->informPBQueue)))
{
CompleteWithResult(startPB,noInformErr);
return;
}
if (!(srcSess =(CommonSessionParamsPtr)GetLocSess(ppcglobPtr)))
{
SetPortInformQue(informPB, destportPtr); // Add the PB back
CompleteWithResult(startPB,sessTableErr);
return;
}
if (!(destSess = (CommonSessionParamsPtr)GetLocSess(ppcglobPtr)))
{
FreeLocSess((LocalIPCParamsPtr)srcSess); /* Free the Source Session table */
SetPortInformQue(informPB, destportPtr); // Add the PB back
CompleteStartPBWithResult:
CompleteWithResult(startPB,sessTableErr);
return;
}
SetSessionTable(srcSess, srcportPtr, ppcglobPtr);
SetSessionTable(destSess, destportPtr, ppcglobPtr);
srcSess->conRef = destSess->sessRefNum;
destSess->conRef = srcSess->sessRefNum;
informPB->sessRefNum = destSess->sessRefNum;
informPB->serviceType = ppcServiceRealTime;
informPB->userData = startPB->userData;
informPB->requestType = ppcLocalOrigin;
if (informPB->portName)
CopyPortName(&(srcportPtr->portName),informPB->portName);
if (informPB->locationName)
{
temp = (unsigned char *)(informPB->locationName);
for (i=0; i< sizeof(LocationNameRec); i++)
*temp++ = '\0';
}
if (informPB->userName)
*informPB->userName = '\0'; // No User Name for local Session
if (informPB->autoAccept)
{
srcSess->sessState = DataXferState;
destSess->sessState = DataXferState;
startPB->sessRefNum = srcSess->sessRefNum;
srcSess->PBPtr = NULL;
CompleteWithResult(informPB,noErr);
CompleteWithResult(startPB,noErr);
return;
}
else
{
srcSess->sessState = AwaitAcceptResp;
destSess->sessState = AwaitAcceptReq;
srcSess->PBPtr = startPB; // Remember the Start PB for this session.
CompleteWithResult(informPB,noErr);
}
} // StartLocalSession
void AcceptLocalSession(PPCAcceptPBPtr acceptPB,
CommonSessionParamsPtr destSess,
PPCGlobalParamsPtr ppcglobPtr)
{
CommonSessionParamsPtr srcSess;
PPCStartPBPtr startPB;
if (!(srcSess = SessRefNumtoPtr(destSess->conRef, ppcglobPtr)))
{
FreeLocSess((LocalIPCParamsPtr)destSess);
CompleteWithResult(acceptPB,noSessionErr);
return;
}
srcSess->sessState = DataXferState;
destSess->sessState = DataXferState;
startPB = srcSess->PBPtr;
startPB->sessRefNum = srcSess->sessRefNum;
srcSess->PBPtr = NULL;
destSess->PBPtr = NULL;
CompleteWithResult(startPB,noErr);
CompleteWithResult(acceptPB,noErr);
} // AcceptLocalSession
void RejectLocalSession(PPCRejectPBPtr rejectPB,
CommonSessionParamsPtr destSess,
PPCGlobalParamsPtr ppcglobPtr)
{
CommonSessionParamsPtr srcSess;
PPCStartPBPtr startPB;
if (!(srcSess = SessRefNumtoPtr(destSess->conRef, ppcglobPtr)))
{
FreeLocSess((LocalIPCParamsPtr)destSess);
CompleteWithResult(rejectPB,noSessionErr);
return;
}
startPB = srcSess->PBPtr;
FreeLocSess((LocalIPCParamsPtr)destSess);
FreeLocSess((LocalIPCParamsPtr)srcSess);
startPB->rejectInfo = rejectPB->rejectInfo;
CompleteWithResult(startPB,userRejectErr);
CompleteWithResult(rejectPB, noErr);
}
void WriteLocalData(PPCWritePBPtr writePB,
CommonSessionParamsPtr srcSess,
PPCGlobalParamsPtr ppcglobPtr)
{
CommonSessionParamsPtr destSess;
PBWriteResPtr res;
res = (PBWriteResPtr)(writePB->Reserved);
res->curBufPos = writePB->bufferPtr;
res->length = writePB->bufferLength;
if (destSess = SessRefNumtoPtr(srcSess->conRef, ppcglobPtr))
{
AddWritePB(srcSess,writePB);
if(!srcSess->writePB) // if not currently writing then
{
srcSess->writePB = GetWritePB(srcSess);
if(destSess->readPB)
LocalTransfer(srcSess, destSess);
}
}
else
CompleteWithResult(writePB,noSessionErr);
} // WriteLocalData
void ReadLocalData(PPCReadPBPtr readPB,
CommonSessionParamsPtr destSess,
PPCGlobalParamsPtr ppcglobPtr)
{
CommonSessionParamsPtr srcSess;
PBWriteResPtr res;
res = (PBWriteResPtr)(readPB->Reserved);
if (srcSess = SessRefNumtoPtr(destSess->conRef, ppcglobPtr))
{
AddReadPB(destSess,readPB);
if(!destSess->readPB)
{
destSess->readPB = GetReadPB(destSess);
if(srcSess->writePB)
LocalTransfer(srcSess, destSess);
}
}
else
CompleteWithResult(readPB,noSessionErr);
} // ReadLocalData
void EndLocalSession(PPCEndPBPtr endPB,
CommonSessionParamsPtr srcSess,
PPCGlobalParamsPtr ppcglobPtr)
{
CommonSessionParamsPtr destSess;
PPCPortEntryPtr portPtr;
portPtr = srcSess->portEntry;
destSess = DeleteSessByRefNum(srcSess->conRef,ppcglobPtr);
if (srcSess->sessState == AwaitAcceptResp)
{
if (destSess)
{
FreeLocSess((LocalIPCParamsPtr)destSess);
}
CompleteWithResult(srcSess->PBPtr, portClosedErr);
FreeLocSess((LocalIPCParamsPtr)srcSess);
}
else if (srcSess->sessState == AwaitAcceptReq)
{
if (destSess)
{
CompleteWithResult(destSess->PBPtr,destPortErr);
FreeLocSess((LocalIPCParamsPtr)destSess);
}
FreeLocSess((LocalIPCParamsPtr)srcSess);
}
else if (srcSess->sessState == DataXferState)
{
if (destSess)
{
KillReadAndWrite(destSess);
FreeLocSess((LocalIPCParamsPtr)destSess);
}
KillReadAndWrite(srcSess);
FreeLocSess((LocalIPCParamsPtr)srcSess);
}
#ifdef DEBUG
else
DebugStr("\pSrcSession in unknown state, doesn't get freed");
#endif
if (endPB)
CompleteWithResult(endPB,noErr);
else // <20> Must be a PPCClose operation.
CompleteClosePort(portPtr); // <20>
} // EndLocalSession
void ListLocalPorts(IPCListPortsPBPtr listPB,PPCGlobalParamsPtr ppcglobPtr)
{
GetPortNames(ppcglobPtr,listPB->portName,
true, // local
true, // guetstUnChecked
listPB->startIndex,
(PortInfoPtr)listPB->bufferPtr,
listPB->requestCount, &(listPB->actualCount));
CompleteWithResult(listPB,noErr);
} //ListLocalPorts
STATIC void LocalTransfer(CommonSessionParamsPtr writeSess,
CommonSessionParamsPtr readSess)
{
PPCWritePBPtr writePB;
PPCReadPBPtr readPB;
unsigned long xferLength;
PBWriteResPtr res;
unsigned char *dataPtr;
while((writePB = writeSess->writePB) && (readPB = readSess->readPB))
{
res = (PBWriteResPtr)(writePB->Reserved);
if (res->length > readPB->bufferLength -readPB->actualLength)
xferLength = readPB->bufferLength - readPB->actualLength;
else
xferLength = res->length; // <20>
/* Copy the Data */
dataPtr = (unsigned char *)(readPB->bufferPtr + readPB->actualLength);
BlockMove((char *)res->curBufPos, dataPtr,xferLength);
writePB->actualLength += xferLength;
res->curBufPos+=xferLength;
res->length-=xferLength;
readPB->blockCreator = writePB->blockCreator;
readPB->blockType = writePB->blockType;
readPB->userData = writePB->userData;
readPB->actualLength = readPB->actualLength + xferLength;
if (res->length) // <20> If we have more to write for this request.
{
readPB->more = true;
}
else
{
readPB->more = writePB->more;
CompleteWithResult(writePB,noErr);
writeSess->writePB = GetWritePB(writeSess);
}
// if no more to read, or the read buffer is full then
if (!readPB->more || (readPB->actualLength == readPB->bufferLength))
{
CompleteWithResult(readPB,noErr);
readSess->readPB = GetReadPB(readSess);
}
}
} // LocalTransfer
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