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/*
* ecos.c: implementation of the extension definition
* functions for the Extended Class of Service
* block.
*
* Copyright (c) 2008, California Institute of Technology.
* ALL RIGHTS RESERVED. U.S. Government Sponsorship
* acknowledged.
*
* Author: Scott Burleigh, JPL
*/
#include "bpP.h"
#include "bei.h"
#include "ecos.h"
int ecos_offer(ExtensionBlock *blk, Bundle *bundle)
{
Sdnv flowLabelSdnv;
char dataBuffer[32];
if (bundle->extendedCOS.flags == 0 && bundle->extendedCOS.ordinal == 0)
{
return 0; /* ECOS block is unnecessary. */
}
blk->blkProcFlags = BLK_MUST_BE_COPIED;
blk->dataLength = 2;
if (bundle->extendedCOS.flags & BP_FLOW_LABEL_PRESENT)
{
encodeSdnv(&flowLabelSdnv, bundle->extendedCOS.flowLabel);
}
else
{
flowLabelSdnv.length = 0;
}
blk->dataLength += flowLabelSdnv.length;
blk->size = 0;
blk->object = 0;
dataBuffer[0] = bundle->extendedCOS.flags;
dataBuffer[1] = bundle->extendedCOS.ordinal;
memcpy(dataBuffer + 2, flowLabelSdnv.text, flowLabelSdnv.length);
return serializeExtBlk(blk, NULL, dataBuffer);
}
void ecos_release(ExtensionBlock *blk)
{
return;
}
int ecos_record(ExtensionBlock *sdrBlk, AcqExtBlock *ramBlk)
{
return 0;
}
int ecos_copy(ExtensionBlock *newBlk, ExtensionBlock *oldBlk)
{
return 0;
}
int ecos_processOnFwd(ExtensionBlock *blk, Bundle *bundle, void *ctxt)
{
return 0;
}
int ecos_processOnAccept(ExtensionBlock *blk, Bundle *bundle, void *ctxt)
{
return 0;
}
int ecos_processOnEnqueue(ExtensionBlock *blk, Bundle *bundle, void *ctxt)
{
return 0;
}
int ecos_processOnDequeue(ExtensionBlock *blk, Bundle *bundle, void *ctxt)
{
return 0;
}
int ecos_acquire(AcqExtBlock *blk, AcqWorkArea *wk)
{
Bundle *bundle = &wk->bundle;
unsigned char *cursor;
int bytesRemaining = blk->dataLength;
if (bytesRemaining < 2)
{
return 0; /* Malformed. */
}
/* Data parsed out of the ecos byte array go directly
* into the bundle structure, not into a block-specific
* workspace object. */
blk->size = 0;
blk->object = NULL;
cursor = blk->bytes + (blk->length - blk->dataLength);
bundle->extendedCOS.flags = *cursor;
cursor++;
bundle->extendedCOS.ordinal = *cursor;
cursor++;
bytesRemaining -= 2;
if (bundle->extendedCOS.flags & BP_FLOW_LABEL_PRESENT)
{
extractSmallSdnv(&(bundle->extendedCOS.flowLabel), &cursor,
&bytesRemaining);
}
else
{
bundle->extendedCOS.flowLabel = 0;
}
if (bytesRemaining != 0)
{
return 0; /* Malformed. */
}
return 1;
}
int ecos_check(AcqExtBlock *blk, AcqWorkArea *wk)
{
return 0;
}
void ecos_clear(AcqExtBlock *blk)
{
return;
}
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