int dtn2_removeRule(char *nodeNm, char *demux)
{
Sdr sdr = getIonsdr();
char nodeName[SDRSTRING_BUFSZ];
Object elt;
OBJ_POINTER(Dtn2Plan, plan);
Object ruleAddr;
OBJ_POINTER(Dtn2Rule, rule);
CHKERR(nodeNm && demux);
if (*demux == '\0')
{
writeMemo("[?] Zero-length DTN2 rule demux.");
return 0;
}
if (filterNodeName(nodeName, nodeNm) < 0)
{
return 0;
}
CHKERR(sdr_begin_xn(sdr));
elt = locatePlan(nodeName, NULL);
if (elt == 0)
{
sdr_exit_xn(sdr);
writeMemoNote("[?] No plan defined for this node", nodeNm);
return 0;
}
GET_OBJ_POINTER(sdr, Dtn2Plan, plan, sdr_list_data(sdr, elt));
dtn2_findRule(nodeName, demux, plan, &ruleAddr, &elt);
if (elt == 0)
{
sdr_exit_xn(sdr);
writeMemoNote("[?] Unknown rule", demux);
return 0;
}
/* All parameters validated, okay to remove the rule. */
GET_OBJ_POINTER(sdr, Dtn2Rule, rule, ruleAddr);
dtn2_destroyDirective(&(rule->directive));
sdr_free(sdr, ruleAddr);
sdr_list_delete(sdr, elt, NULL, NULL);
if (sdr_end_xn(sdr) < 0)
{
putErrmsg("Can't remove rule.", NULL);
return -1;
}
return 1;
}
static int scanInFdus(Sdr sdr, time_t currentTime)
{
CfdpDB *cfdpConstants;
Object entityElt;
OBJ_POINTER(Entity, entity);
Object elt;
Object nextElt;
Object fduObj;
OBJ_POINTER(InFdu, fdu);
CfdpHandler handler;
cfdpConstants = getCfdpConstants();
sdr_begin_xn(sdr);
for (entityElt = sdr_list_first(sdr, cfdpConstants->entities);
entityElt; entityElt = sdr_list_next(sdr, entityElt))
{
GET_OBJ_POINTER(sdr, Entity, entity, sdr_list_data(sdr,
entityElt));
for (elt = sdr_list_first(sdr, entity->inboundFdus); elt;
elt = nextElt)
{
nextElt = sdr_list_next(sdr, elt);
fduObj = sdr_list_data(sdr, elt);
GET_OBJ_POINTER(sdr, InFdu, fdu, fduObj);
if (fdu->eofReceived && fdu->checkTime < currentTime)
{
sdr_stage(sdr, NULL, fduObj, 0);
fdu->checkTimeouts++;
fdu->checkTime
+= cfdpConstants->checkTimerPeriod;
sdr_write(sdr, fduObj, (char *) fdu,
sizeof(InFdu));
}
if (fdu->checkTimeouts
> cfdpConstants->checkTimeoutLimit)
{
if (handleFault(&(fdu->transactionId),
CfdpCheckLimitReached, &handler) < 0)
{
sdr_cancel_xn(sdr);
putErrmsg("Can't handle check limit \
reached.", NULL);
return -1;
}
}
}
}
int dtn2_updateRule(char *nodeNm, char *demux, FwdDirective *directive)
{
Sdr sdr = getIonsdr();
char nodeName[SDRSTRING_BUFSZ];
Object elt;
OBJ_POINTER(Dtn2Plan, plan);
Object ruleAddr;
Dtn2Rule ruleBuf;
CHKERR(nodeNm && demux && directive);
if (*demux == '\0')
{
writeMemo("[?] Zero-length DTN2 rule demux.");
return 0;
}
if (filterNodeName(nodeName, nodeNm) < 0)
{
return 0;
}
CHKERR(sdr_begin_xn(sdr));
elt = locatePlan(nodeName, NULL);
if (elt == 0)
{
sdr_exit_xn(sdr);
writeMemoNote("[?] No plan defined for this node", nodeNm);
return 0;
}
GET_OBJ_POINTER(sdr, Dtn2Plan, plan, sdr_list_data(sdr, elt));
dtn2_findRule(nodeName, demux, plan, &ruleAddr, &elt);
if (elt == 0)
{
sdr_exit_xn(sdr);
writeMemoNote("[?] Unknown rule", demux);
return 0;
}
/* All parameters validated, okay to update the rule. */
sdr_stage(sdr, (char *) &ruleBuf, ruleAddr, sizeof(Dtn2Rule));
dtn2_destroyDirective(&ruleBuf.directive);
memcpy((char *) &ruleBuf.directive, (char *) directive,
sizeof(FwdDirective));
sdr_write(sdr, ruleAddr, (char *) &ruleBuf, sizeof(Dtn2Rule));
if (sdr_end_xn(sdr) < 0)
{
putErrmsg("Can't update rule.", NULL);
return -1;
}
return 1;
}
void dtn2_findRule(char *nodeNm, char *demux, Dtn2Plan *plan,
Object *ruleAddr, Object *eltp)
{
Sdr sdr = getIonsdr();
char nodeName[SDRSTRING_BUFSZ];
Object elt;
OBJ_POINTER(Dtn2Plan, planPtr);
/* This function finds the Dtn2Rule for the specified
* demux token, for the specified destination node, if
* any. */
CHKVOID(ionLocked());
CHKVOID(ruleAddr);
CHKVOID(eltp);
*eltp = 0;
if (plan == NULL)
{
if (nodeNm == NULL)
{
return;
}
if (filterNodeName(nodeName, nodeNm) < 0)
{
return;
}
elt = locatePlan(nodeName, NULL);
if (elt == 0)
{
return;
}
GET_OBJ_POINTER(sdr, Dtn2Plan, planPtr, sdr_list_data(sdr,
elt));
plan = planPtr;
}
elt = locateRule(plan, demux, NULL);
if (elt == 0)
{
return;
}
*ruleAddr = sdr_list_data(sdr, elt);
*eltp = elt;
}
int dtn2_removePlan(char *nodeNm)
{
Sdr sdr = getIonsdr();
char nodeName[SDRSTRING_BUFSZ];
Object elt;
Object planObj;
OBJ_POINTER(Dtn2Plan, plan);
CHKERR(nodeNm);
if (filterNodeName(nodeName, nodeNm) < 0)
{
return 0;
}
CHKERR(sdr_begin_xn(sdr));
elt = locatePlan(nodeName, NULL);
if (elt == 0)
{
sdr_exit_xn(sdr);
writeMemoNote("[?] Unknown plan", nodeNm);
return 0;
}
planObj = sdr_list_data(sdr, elt);
GET_OBJ_POINTER(sdr, Dtn2Plan, plan, planObj);
if (sdr_list_length(sdr, plan->rules) > 0)
{
sdr_exit_xn(sdr);
writeMemoNote("[?] Can't remove plan; still has rules", nodeNm);
return 0;
}
/* Okay to remove this plan from the database. */
sdr_list_delete(sdr, elt, NULL, NULL);
dtn2_destroyDirective(&(plan->defaultDirective));
sdr_list_destroy(sdr, plan->rules, NULL, NULL);
sdr_free(sdr, plan->nodeName);
sdr_free(sdr, planObj);
if (sdr_end_xn(sdr) < 0)
{
putErrmsg("Can't remove plan.", nodeNm);
return -1;
}
return 1;
}
static void executeInfo()
{
Sdr sdr = getIonsdr();
OBJ_POINTER(CfdpDB, db);
char buffer[256];
sdr_begin_xn(sdr); /* Just to lock memory. */
GET_OBJ_POINTER(sdr, CfdpDB, db, getCfdpDbObject());
isprintf(buffer, sizeof buffer, "xncount=%lu, maxtrnbr=%lu, \
fillchar=0x%x, discard=%hu, requirecrc=%hu, segsize=%hu, mtusize = %hu, \
inactivity=%u, ckperiod=%u, maxtimeouts=%u", db->transactionCounter,
db->maxTransactionNbr, db->fillCharacter,
db->discardIncompleteFile, db->crcRequired,
db->maxFileDataLength, db->mtuSize,
db->transactionInactivityLimit, db->checkTimerPeriod,
db->checkTimeoutLimit);
sdr_exit_xn(sdr);
printText(buffer);
}
static Object locateRule(Dtn2Plan *plan, char *demux, Object *nextRule)
{
Sdr sdr = getIonsdr();
Object elt;
OBJ_POINTER(Dtn2Rule, rule);
char nameBuffer[SDRSTRING_BUFSZ];
int result;
/* This function locates the Dtn2Rule identified by the
* specified demux token, for the specified destination
* endpoint, if any; must be an exact match. If
* none, notes the location within the rules list at
* which such a rule should be inserted. */
if (nextRule) *nextRule = 0; /* Default. */
for (elt = sdr_list_first(sdr, plan->rules); elt;
elt = sdr_list_next(sdr, elt))
{
GET_OBJ_POINTER(sdr, Dtn2Rule, rule, sdr_list_data(sdr, elt));
sdr_string_read(sdr, nameBuffer, rule->demux);
result = strcmp(nameBuffer, demux);
if (result < 0)
{
continue;
}
if (result > 0)
{
if (nextRule) *nextRule = elt;
break; /* Same as end of list. */
}
return elt;
}
return 0;
}
static Object locatePlan(char *nodeName, Object *nextPlan)
{
Sdr sdr = getIonsdr();
Object elt;
OBJ_POINTER(Dtn2Plan, plan);
char nameBuffer[SDRSTRING_BUFSZ];
int result;
/* This function locates the Dtn2Plan identified by the
* specified node name, if any; must be an exact match.
* If none, notes the location within the plans list at
* which such a plan should be inserted. */
if (nextPlan) *nextPlan = 0; /* Default. */
for (elt = sdr_list_first(sdr, (_dtn2Constants())->plans); elt;
elt = sdr_list_next(sdr, elt))
{
GET_OBJ_POINTER(sdr, Dtn2Plan, plan, sdr_list_data(sdr, elt));
sdr_string_read(sdr, nameBuffer, plan->nodeName);
result = strcmp(nameBuffer, nodeName);
if (result < 0)
{
continue;
}
if (result > 0)
{
if (nextPlan) *nextPlan = elt;
break; /* Same as end of list. */
}
return elt;
}
return 0;
}
void bp_untrack(Object bundleObj, Object trackingElt)
{
Sdr sdr = getIonsdr();
OBJ_POINTER(Bundle, bundle);
Object elt;
CHKVOID(bundleObj && trackingElt);
sdr_begin_xn(sdr);
GET_OBJ_POINTER(sdr, Bundle, bundle, bundleObj);
if (bundle->trackingElts == 0)
{
sdr_exit_xn(sdr);
return;
}
for (elt = sdr_list_first(sdr, bundle->trackingElts); elt;
elt = sdr_list_next(sdr, elt))
{
if (sdr_list_data(sdr, elt) == trackingElt)
{
break;
}
}
if (elt == 0) /* Not found. */
{
sdr_exit_xn(sdr);
return;
}
sdr_list_delete(sdr, elt, NULL, NULL);
if (sdr_end_xn(sdr) < 0)
{
putErrmsg("Failed removing bundle tracking elt.", NULL);
}
}
int bp_track(Object bundleObj, Object trackingElt)
{
Sdr sdr = getIonsdr();
OBJ_POINTER(Bundle, bundle);
CHKERR(bundleObj && trackingElt);
sdr_begin_xn(sdr);
GET_OBJ_POINTER(sdr, Bundle, bundle, bundleObj);
if (bundle->trackingElts == 0)
{
sdr_exit_xn(sdr);
putErrmsg("Corrupt bundle? Has no trackingElts list.", NULL);
return -1;
}
sdr_list_insert_last(sdr, bundle->trackingElts, trackingElt);
if (sdr_end_xn(sdr) < 0)
{
putErrmsg("Failed adding bundle tracking elt.", NULL);
return -1;
}
return 0;
}
static void executeList(int tokenCount, char **tokens)
{
Sdr sdr = getIonsdr();
ImcDB imcdb;
Object elt;
OBJ_POINTER(NodeId, node);
if (tokenCount != 1)
{
SYNTAX_ERROR;
return;
}
CHKVOID(sdr_begin_xn(sdr));
sdr_read(getIonsdr(), (char *) &imcdb, getImcDbObject(), sizeof(ImcDB));
for (elt = sdr_list_first(sdr, imcdb.kin); elt;
elt = sdr_list_next(sdr, elt))
{
GET_OBJ_POINTER(sdr, NodeId, node, sdr_list_data(sdr, elt));
printKin(node->nbr, imcdb.parent);
}
sdr_exit_xn(sdr);
}
int dtn2_addRule(char *nodeNm, char *demux, FwdDirective *directive)
{
Sdr sdr = getIonsdr();
char nodeName[SDRSTRING_BUFSZ];
Object elt;
OBJ_POINTER(Dtn2Plan, plan);
Object nextRule;
Dtn2Rule ruleBuf;
Object addr;
CHKERR(nodeNm && demux && directive);
if (*demux == '\0')
{
writeMemo("[?] Zero-length DTN2 rule demux.");
return 0;
}
if (filterNodeName(nodeName, nodeNm) < 0)
{
return 0;
}
CHKERR(sdr_begin_xn(sdr));
elt = locatePlan(nodeName, NULL);
if (elt == 0)
{
sdr_exit_xn(sdr);
writeMemoNote("[?] No plan defined for this node", nodeNm);
return 0;
}
GET_OBJ_POINTER(sdr, Dtn2Plan, plan, sdr_list_data(sdr, elt));
if (locateRule(plan, demux, &nextRule) != 0)
{
sdr_exit_xn(sdr);
writeMemoNote("[?] Duplicate rule", demux);
return 0;
}
/* All parameters validated, okay to add the rule. */
memset((char *) &ruleBuf, 0, sizeof(Dtn2Rule));
ruleBuf.demux = sdr_string_create(sdr, demux);
memcpy((char *) &ruleBuf.directive, (char *) directive,
sizeof(FwdDirective));
addr = sdr_malloc(sdr, sizeof(Dtn2Rule));
if (addr)
{
if (nextRule)
{
elt = sdr_list_insert_before(sdr, nextRule, addr);
}
else
{
elt = sdr_list_insert_last(sdr, plan->rules, addr);
}
sdr_write(sdr, addr, (char *) &ruleBuf, sizeof(Dtn2Rule));
}
if (sdr_end_xn(sdr) < 0)
{
putErrmsg("Can't add rule.", NULL);
return -1;
}
return 1;
}
int dtn2_lookupDirective(char *nodeName, char *demux, Bundle *bundle,
FwdDirective *dirbuf)
{
Sdr sdr = getIonsdr();
int protClassReqd;
Object elt;
Object addr;
OBJ_POINTER(Dtn2Plan, plan);
int stringLen;
char stringBuffer[SDRSTRING_BUFSZ];
int result;
int last;
OBJ_POINTER(Dtn2Rule, rule);
/* This function determines the relevant FwdDirective for
* the specified eid, if any. Wild card match is okay. */
CHKERR(ionLocked());
CHKERR(nodeName && demux && dirbuf);
/* Determine constraints on directive usability. */
protClassReqd = bundle->extendedCOS.flags & BP_PROTOCOL_BOTH;
if (protClassReqd == 0) /* Don't care. */
{
protClassReqd = -1; /* Matches any. */
}
else if (protClassReqd == 10) /* Need BSS. */
{
protClassReqd = BP_PROTOCOL_STREAMING;
}
/* Find best matching plan. Universal wild-card match,
* if any, is at the end of the list, so there's no way
* to terminate the search early. */
for (elt = sdr_list_first(sdr, (_dtn2Constants())->plans); elt;
elt = sdr_list_next(sdr, elt))
{
addr = sdr_list_data(sdr, elt);
GET_OBJ_POINTER(sdr, Dtn2Plan, plan, addr);
stringLen = sdr_string_read(sdr, stringBuffer, plan->nodeName);
result = strcmp(stringBuffer, nodeName);
if (result < 0)
{
continue;
}
if (result == 0) /* Exact match. */
{
break; /* Stop searching. */
}
/* Node name in plan is greater than node name,
* but it might still be a wild-card match. */
last = stringLen - 1;
if (stringBuffer[last] == '~' /* "all nodes" */
&& strncmp(stringBuffer, nodeName, stringLen - 1) == 0)
{
break; /* Stop searching. */
}
}
if (elt == 0)
{
return 0; /* No plan found. */
}
/* Find best matching rule. */
for (elt = sdr_list_first(sdr, plan->rules); elt;
elt = sdr_list_next(sdr, elt))
{
addr = sdr_list_data(sdr, elt);
GET_OBJ_POINTER(sdr, Dtn2Rule, rule, addr);
if ((rule->directive.protocolClass & protClassReqd) == 0)
{
continue; /* Can't use this rule. */
}
stringLen = sdr_string_read(sdr, stringBuffer, rule->demux);
result = strcmp(stringBuffer, demux);
if (result < 0)
{
continue;
}
if (result == 0) /* Exact match. */
{
break; /* Stop searching. */
}
/* Demux in rule is greater than demux, but it
* might still be a wild-card match. */
last = stringLen - 1;
if (stringBuffer[last] == '~' /* "all demuxes" */
&& strncmp(stringBuffer, demux, stringLen - 1) == 0)
{
break; /* Stop searching. */
}
}
if (elt == 0) /* End of list. */
{
if ((plan->defaultDirective.protocolClass & protClassReqd) == 0)
{
return 0; /* Matching plan unusable. */
}
memcpy((char *) dirbuf, (char *) &plan->defaultDirective,
sizeof(FwdDirective));
return 1;
}
/* Found a matching rule. */
memcpy((char *) dirbuf, (char *) &rule->directive,
sizeof(FwdDirective));
return 1;
}
int bp_receive(BpSAP sap, BpDelivery *dlvBuffer, int timeoutSeconds)
{
Sdr sdr = getIonsdr();
VEndpoint *vpoint;
OBJ_POINTER(Endpoint, endpoint);
Object dlvElt;
Object bundleAddr;
Bundle bundle;
TimerParms timerParms;
pthread_t timerThread;
int result;
char *dictionary;
CHKERR(sap && dlvBuffer);
if (timeoutSeconds < BP_BLOCKING)
{
putErrmsg("Illegal timeout interval.", itoa(timeoutSeconds));
return -1;
}
vpoint = sap->vpoint;
sdr_begin_xn(sdr);
if (vpoint->appPid != sm_TaskIdSelf())
{
sdr_exit_xn(sdr);
putErrmsg("Can't receive: not owner of endpoint.",
itoa(vpoint->appPid));
return -1;
}
if (sm_SemEnded(vpoint->semaphore))
{
sdr_exit_xn(sdr);
writeMemo("[?] Endpoint has been stopped.");
/* End task, but without error. */
return -1;
}
/* Get oldest bundle in delivery queue, if any; wait
* for one if necessary. */
GET_OBJ_POINTER(sdr, Endpoint, endpoint, sdr_list_data(sdr,
vpoint->endpointElt));
dlvElt = sdr_list_first(sdr, endpoint->deliveryQueue);
if (dlvElt == 0)
{
sdr_exit_xn(sdr);
if (timeoutSeconds == BP_POLL)
{
dlvBuffer->result = BpReceptionTimedOut;
return 0;
}
/* Wait for semaphore to be given, either by the
* deliverBundle() function or by timer thread. */
if (timeoutSeconds == BP_BLOCKING)
{
timerParms.interval = -1;
}
else /* This is a receive() with a deadline. */
{
timerParms.interval = timeoutSeconds;
timerParms.semaphore = vpoint->semaphore;
if (pthread_create(&timerThread, NULL, timerMain,
&timerParms) < 0)
{
putSysErrmsg("Can't enable interval timer",
NULL);
return -1;
}
}
/* Take endpoint semaphore. */
if (sm_SemTake(vpoint->semaphore) < 0)
{
putErrmsg("Can't take endpoint semaphore.", NULL);
return -1;
}
if (sm_SemEnded(vpoint->semaphore))
{
writeMemo("[i] Endpoint has been stopped.");
/* End task, but without error. */
return -1;
}
/* Have taken the semaphore, one way or another. */
sdr_begin_xn(sdr);
dlvElt = sdr_list_first(sdr, endpoint->deliveryQueue);
if (dlvElt == 0) /* Still nothing. */
{
/* Either sm_SemTake() was interrupted
* or else timer thread gave semaphore. */
sdr_exit_xn(sdr);
if (timerParms.interval == 0)
{
/* Timer expired. */
dlvBuffer->result = BpReceptionTimedOut;
pthread_join(timerThread, NULL);
}
else /* Interrupted. */
{
dlvBuffer->result = BpReceptionInterrupted;
if (timerParms.interval != -1)
{
pthread_cancel(timerThread);
pthread_join(timerThread, NULL);
}
}
return 0;
}
else /* Bundle was delivered. */
{
if (timerParms.interval != -1)
{
pthread_cancel(timerThread);
pthread_join(timerThread, NULL);
}
}
}
/* At this point, we have got a dlvElt and are in an SDR
* transaction. */
bundleAddr = sdr_list_data(sdr, dlvElt);
sdr_stage(sdr, (char *) &bundle, bundleAddr, sizeof(Bundle));
dictionary = retrieveDictionary(&bundle);
if (dictionary == (char *) &bundle)
{
sdr_cancel_xn(sdr);
putErrmsg("Can't retrieve dictionary.", NULL);
return -1;
}
/* Now fill in the data indication structure. */
dlvBuffer->result = BpPayloadPresent;
if (printEid(&bundle.id.source, dictionary,
&dlvBuffer->bundleSourceEid) < 0)
{
sdr_cancel_xn(sdr);
putErrmsg("Can't print source EID.", NULL);
return -1;
}
dlvBuffer->bundleCreationTime.seconds = bundle.id.creationTime.seconds;
dlvBuffer->bundleCreationTime.count = bundle.id.creationTime.count;
dlvBuffer->adminRecord = bundle.bundleProcFlags & BDL_IS_ADMIN;
dlvBuffer->adu = zco_add_reference(sdr, bundle.payload.content);
dlvBuffer->ackRequested = bundle.bundleProcFlags & BDL_APP_ACK_REQUEST;
/* Now before returning we send delivery status report
* if it is requested. */
if (SRR_FLAGS(bundle.bundleProcFlags) & BP_DELIVERED_RPT)
{
bundle.statusRpt.flags |= BP_DELIVERED_RPT;
getCurrentDtnTime(&bundle.statusRpt.deliveryTime);
}
if (bundle.statusRpt.flags)
{
result = sendStatusRpt(&bundle, dictionary);
if (result < 0)
{
sdr_cancel_xn(sdr);
putErrmsg("Can't send status report.", NULL);
return -1;
}
}
/* Finally delete the delivery list element and, if
* possible, destroy the bundle itself. */
if (dictionary)
{
MRELEASE(dictionary);
}
sdr_list_delete(sdr, dlvElt, (SdrListDeleteFn) NULL, NULL);
bundle.dlvQueueElt = 0;
sdr_write(sdr, bundleAddr, (char *) &bundle, sizeof(Bundle));
if (bpDestroyBundle(bundleAddr, 0) < 0)
{
sdr_cancel_xn(sdr);
putErrmsg("Can't destroy bundle.", NULL);
return -1;
}
if (sdr_end_xn(sdr) < 0)
{
putErrmsg("Failure in bundle reception.", NULL);
return -1;
}
return 0;
}
static int dispatchEvents(Sdr sdr, Object events, time_t currentTime)
{
Object elt;
Object eventObj;
OBJ_POINTER(BpEvent, event);
int result;
while (1)
{
sdr_begin_xn(sdr);
CHKERR(ionLocked()); /* In case of killm. */
elt = sdr_list_first(sdr, events);
if (elt == 0) /* No more events to dispatch. */
{
sdr_exit_xn(sdr);
return 0;
}
eventObj = sdr_list_data(sdr, elt);
GET_OBJ_POINTER(sdr, BpEvent, event, eventObj);
if (event->time > currentTime)
{
/* This is the first future event. */
sdr_exit_xn(sdr);
return 0;
}
switch (event->type)
{
case expiredTTL:
result = bpDestroyBundle(event->ref, 1);
/* Note that bpDestroyBundle() always
* erases the bundle's timeline event,
* so we must NOT do so here. */
break; /* Out of switch. */
case xmitOverdue:
result = bpReforwardBundle(event->ref);
/* Note that bpReforwardBundle() always
* erases the bundle's xmitOverdue event,
* so we must NOT do so here. */
break; /* Out of switch. */
case ctDue:
result = bpReforwardBundle(event->ref);
/* Note that bpReforwardBundle() always
* erases the bundle's ctDue event, so
* we must NOT do so here. */
break; /* Out of switch. */
default: /* Spurious event; erase. */
sdr_free(sdr, eventObj);
sdr_list_delete(sdr, elt, NULL, NULL);
result = 0; /* Event is ignored. */
}
if (result != 0) /* Dispatching failed. */
{
sdr_cancel_xn(sdr);
putErrmsg("Failed handing BP event.", NULL);
return result;
}
if (sdr_end_xn(sdr) < 0)
{
putErrmsg("Failed dispatching BP event.", NULL);
return -1;
}
}
}
static int reforwardStrandedBundles(int nodeNbr)
{
Sdr sdr = getIonsdr();
BpDB *bpConstants = getBpConstants();
Object elt;
Object eventObj;
OBJ_POINTER(BpEvent, event);
OBJ_POINTER(Bundle, bundle);
sdr_begin_xn(sdr);
for (elt = sdr_list_first(sdr, bpConstants->timeline); elt;
elt = sdr_list_next(sdr, elt))
{
eventObj = sdr_list_data(sdr, elt);
GET_OBJ_POINTER(sdr, BpEvent, event, eventObj);
if (event->type != expiredTTL)
{
continue;
}
/* Have got a bundle that still exists. */
GET_OBJ_POINTER(sdr, Bundle, bundle, event->ref);
if (bundle->dlvQueueElt || bundle->fragmentElt
|| bundle->fwdQueueElt || bundle->overdueElt
|| bundle->ctDueElt || bundle->xmitsNeeded > 0)
{
/* No need to reforward. */
continue;
}
/* A stranded bundle, awaiting custody acceptance.
* Might be for a neighbor other than the one
* that just reconnected, but in that case the
* bundle will be reforwarded and requeued and
* go into the bit bucket again; no harm. Note,
* though, that this means that a BRS server
* would be a bad candidate for gateway into a
* space subnet: due to long OWLTs, there might
* be a lot of bundles sent via LTP that are
* awaiting custody acceptance, so reconnection
* of a BRS client might trigger retransmission
* of a lot of bundles on the space link in
* addition to the ones to be issued via brss. */
if (bpReforwardBundle(event->ref) < 0)
{
sdr_cancel_xn(sdr);
putErrmsg("brss reforward failed.", NULL);
return -1;
}
}
if (sdr_end_xn(sdr) < 0)
{
putErrmsg("brss reforwarding failed.", NULL);
return -1;
}
return 0;
}
