#include <Ieee80211MgmtSTA.h>
Detailed Description
Used in 802.11 infrastructure mode: handles management frames for a station (STA). See corresponding NED file for a detailed description.
Definition at line 33 of file Ieee80211MgmtSTA.h.
Member Typedef Documentation
typedef std::list<APInfo> Ieee80211MgmtSTA::AccessPointList [protected] |
Definition at line 97 of file Ieee80211MgmtSTA.h.
Member Function Documentation
| void Ieee80211MgmtSTA::beaconLost | ( | ) | [protected, virtual] |
Missed a few consecutive beacons
Definition at line 252 of file Ieee80211MgmtSTA.cc.
Referenced by handleTimer().
{
EV << "Missed a few consecutive beacons -- AP is considered lost\n";
nb->fireChangeNotification(NF_L2_BEACON_LOST, NULL); //XXX use InterfaceEntry as detail, etc...
}
| void Ieee80211MgmtSTA::changeChannel | ( | int | channelNum | ) | [protected, virtual] |
Utility function: switches to the given radio channel.
Definition at line 240 of file Ieee80211MgmtSTA.cc.
Referenced by scanNextChannel(), startAssociation(), and startAuthentication().
{
EV << "Tuning to channel #" << channelNum << "\n";
// sending PHY_C_CONFIGURERADIO command to MAC
PhyControlInfo *phyCtrl = new PhyControlInfo();
phyCtrl->setChannelNumber(channelNum);
cMessage *msg = new cMessage("changeChannel", PHY_C_CONFIGURERADIO);
msg->setControlInfo(phyCtrl);
send(msg, "macOut");
}
| void Ieee80211MgmtSTA::clearAPList | ( | ) | [protected, virtual] |
Utility function: clear the AP list, and cancel any pending authentications.
Definition at line 232 of file Ieee80211MgmtSTA.cc.
Referenced by processScanCommand().
| void Ieee80211MgmtSTA::disassociate | ( | ) | [protected, virtual] |
Utility function: Cancel the existing association
Definition at line 520 of file Ieee80211MgmtSTA.cc.
Referenced by processDeauthenticateCommand(), processDisassociateCommand(), and processScanCommand().
{
EV << "Disassociating from AP address=" << assocAP.address << "\n";
ASSERT(isAssociated);
isAssociated = false;
delete cancelEvent(assocAP.beaconTimeoutMsg);
assocAP.beaconTimeoutMsg = NULL;
assocAP = AssociatedAPInfo(); // clear it
}
| Ieee80211DataFrame * Ieee80211MgmtSTA::encapsulate | ( | cPacket * | msg | ) | [protected, virtual] |
Utility function for handleUpperMessage()
Definition at line 205 of file Ieee80211MgmtSTA.cc.
Referenced by handleUpperMessage().
{
Ieee80211DataFrame *frame = new Ieee80211DataFrame(msg->getName());
// frame goes to the AP
frame->setToDS(true);
// receiver is the AP
frame->setReceiverAddress(assocAP.address);
// destination address is in address3
Ieee802Ctrl *ctrl = check_and_cast<Ieee802Ctrl *>(msg->removeControlInfo());
frame->setAddress3(ctrl->getDest());
delete ctrl;
frame->encapsulate(msg);
return frame;
}
| void Ieee80211MgmtSTA::handleAssociationRequestFrame | ( | Ieee80211AssociationRequestFrame * | frame | ) | [protected, virtual] |
Implements Ieee80211MgmtBase.
Definition at line 663 of file Ieee80211MgmtSTA.cc.
{
dropManagementFrame(frame);
}
| void Ieee80211MgmtSTA::handleAssociationResponseFrame | ( | Ieee80211AssociationResponseFrame * | frame | ) | [protected, virtual] |
Implements Ieee80211MgmtBase.
Definition at line 668 of file Ieee80211MgmtSTA.cc.
{
EV << "Received Association Response frame\n";
if (!assocTimeoutMsg)
{
EV << "No association in progress, ignoring frame\n";
delete frame;
return;
}
// extract frame contents
MACAddress address = frame->getTransmitterAddress();
int statusCode = frame->getBody().getStatusCode();
//XXX short aid;
//XXX Ieee80211SupportedRatesElement supportedRates;
delete frame;
// look up AP data structure
APInfo *ap = lookupAP(address);
if (!ap)
error("handleAssociationResponseFrame: AP not known: address=%s", address.str().c_str());
if (isAssociated)
{
EV << "Breaking existing association with AP address=" << assocAP.address << "\n";
isAssociated = false;
delete cancelEvent(assocAP.beaconTimeoutMsg);
assocAP.beaconTimeoutMsg = NULL;
assocAP = AssociatedAPInfo();
}
delete cancelEvent(assocTimeoutMsg);
assocTimeoutMsg = NULL;
if (statusCode!=SC_SUCCESSFUL)
{
EV << "Association failed with AP address=" << ap->address << "\n";
}
else
{
EV << "Association successful, AP address=" << ap->address << "\n";
// change our state to "associated"
isAssociated = true;
(APInfo&)assocAP = (*ap);
nb->fireChangeNotification(NF_L2_ASSOCIATED, NULL); //XXX detail: InterfaceEntry?
assocAP.beaconTimeoutMsg = new cMessage("beaconTimeout", MK_BEACON_TIMEOUT);
scheduleAt(simTime()+MAX_BEACONS_MISSED*assocAP.beaconInterval, assocAP.beaconTimeoutMsg);
}
// report back to agent
sendAssociationConfirm(ap, statusCodeToPrimResultCode(statusCode));
}
| void Ieee80211MgmtSTA::handleAuthenticationFrame | ( | Ieee80211AuthenticationFrame * | frame | ) | [protected, virtual] |
Implements Ieee80211MgmtBase.
Definition at line 560 of file Ieee80211MgmtSTA.cc.
{
MACAddress address = frame->getTransmitterAddress();
int frameAuthSeq = frame->getBody().getSequenceNumber();
EV << "Received Authentication frame from address=" << address << ", seqNum=" << frameAuthSeq << "\n";
APInfo *ap = lookupAP(address);
if (!ap)
{
EV << "AP not known, discarding authentication frame\n";
delete frame;
return;
}
// what if already authenticated with AP
if (ap->isAuthenticated)
{
EV << "AP already authenticated, ignoring frame\n";
delete frame;
return;
}
// is authentication is in progress with this AP?
if (!ap->authTimeoutMsg)
{
EV << "No authentication in progress with AP, ignoring frame\n";
delete frame;
return;
}
// check authentication sequence number is OK
if (frameAuthSeq != ap->authSeqExpected)
{
// wrong sequence number: send error and return
EV << "Wrong sequence number, " << ap->authSeqExpected << " expected\n";
Ieee80211AuthenticationFrame *resp = new Ieee80211AuthenticationFrame("Auth-ERROR");
resp->getBody().setStatusCode(SC_AUTH_OUT_OF_SEQ);
sendManagementFrame(resp, frame->getTransmitterAddress());
delete frame;
// cancel timeout, send error to agent
delete cancelEvent(ap->authTimeoutMsg);
ap->authTimeoutMsg = NULL;
sendAuthenticationConfirm(ap, PRC_REFUSED); //XXX or what resultCode?
return;
}
// check if more exchanges are needed for auth to be complete
int statusCode = frame->getBody().getStatusCode();
if (statusCode==SC_SUCCESSFUL && !frame->getBody().getIsLast())
{
EV << "More steps required, sending another Authentication frame\n";
// more steps required, send another Authentication frame
Ieee80211AuthenticationFrame *resp = new Ieee80211AuthenticationFrame("Auth");
resp->getBody().setSequenceNumber(frameAuthSeq+1);
resp->getBody().setStatusCode(SC_SUCCESSFUL);
// XXX frame length could be increased to account for challenge text length etc.
sendManagementFrame(resp, address);
ap->authSeqExpected += 2;
}
else
{
if (statusCode==SC_SUCCESSFUL)
EV << "Authentication successful\n";
else
EV << "Authentication failed\n";
// authentication completed
ap->isAuthenticated = (statusCode==SC_SUCCESSFUL);
delete cancelEvent(ap->authTimeoutMsg);
ap->authTimeoutMsg = NULL;
sendAuthenticationConfirm(ap, statusCodeToPrimResultCode(statusCode));
}
delete frame;
}
| void Ieee80211MgmtSTA::handleBeaconFrame | ( | Ieee80211BeaconFrame * | frame | ) | [protected, virtual] |
Implements Ieee80211MgmtBase.
Definition at line 760 of file Ieee80211MgmtSTA.cc.
{
EV << "Received Beacon frame\n";
storeAPInfo(frame->getTransmitterAddress(), frame->getBody());
// if it is out associate AP, restart beacon timeout
if (isAssociated && frame->getTransmitterAddress()==assocAP.address)
{
EV << "Beacon is from associated AP, restarting beacon timeout timer\n";
ASSERT(assocAP.beaconTimeoutMsg!=NULL);
cancelEvent(assocAP.beaconTimeoutMsg);
scheduleAt(simTime()+MAX_BEACONS_MISSED*assocAP.beaconInterval, assocAP.beaconTimeoutMsg);
//APInfo *ap = lookupAP(frame->getTransmitterAddress());
//ASSERT(ap!=NULL);
}
delete frame;
}
| void Ieee80211MgmtSTA::handleCommand | ( | int | msgkind, |
| cPolymorphic * | ctrl | ||
| ) | [protected, virtual] |
Implements abstract Ieee80211MgmtBase method
Implements Ieee80211MgmtBase.
Definition at line 184 of file Ieee80211MgmtSTA.cc.
{
if (dynamic_cast<Ieee80211Prim_ScanRequest *>(ctrl))
processScanCommand((Ieee80211Prim_ScanRequest *)ctrl);
else if (dynamic_cast<Ieee80211Prim_AuthenticateRequest *>(ctrl))
processAuthenticateCommand((Ieee80211Prim_AuthenticateRequest *)ctrl);
else if (dynamic_cast<Ieee80211Prim_DeauthenticateRequest *>(ctrl))
processDeauthenticateCommand((Ieee80211Prim_DeauthenticateRequest *)ctrl);
else if (dynamic_cast<Ieee80211Prim_AssociateRequest *>(ctrl))
processAssociateCommand((Ieee80211Prim_AssociateRequest *)ctrl);
else if (dynamic_cast<Ieee80211Prim_ReassociateRequest *>(ctrl))
processReassociateCommand((Ieee80211Prim_ReassociateRequest *)ctrl);
else if (dynamic_cast<Ieee80211Prim_DisassociateRequest *>(ctrl))
processDisassociateCommand((Ieee80211Prim_DisassociateRequest *)ctrl);
else if (ctrl)
error("handleCommand(): unrecognized control info class `%s'", ctrl->getClassName());
else
error("handleCommand(): control info is NULL");
delete ctrl;
}
| void Ieee80211MgmtSTA::handleDataFrame | ( | Ieee80211DataFrame * | frame | ) | [protected, virtual] |
Implements Ieee80211MgmtBase.
Definition at line 555 of file Ieee80211MgmtSTA.cc.
{
sendUp(decapsulate(frame));
}
| void Ieee80211MgmtSTA::handleDeauthenticationFrame | ( | Ieee80211DeauthenticationFrame * | frame | ) | [protected, virtual] |
Implements Ieee80211MgmtBase.
Definition at line 639 of file Ieee80211MgmtSTA.cc.
{
EV << "Received Deauthentication frame\n";
const MACAddress& address = frame->getAddress3(); // source address
APInfo *ap = lookupAP(address);
if (!ap || !ap->isAuthenticated)
{
EV << "Unknown AP, or not authenticated with that AP -- ignoring frame\n";
delete frame;
return;
}
if (ap->authTimeoutMsg)
{
delete cancelEvent(ap->authTimeoutMsg);
ap->authTimeoutMsg = NULL;
EV << "Cancelling pending authentication\n";
delete frame;
return;
}
EV << "Setting isAuthenticated flag for that AP to false\n";
ap->isAuthenticated = false;
}
| void Ieee80211MgmtSTA::handleDisassociationFrame | ( | Ieee80211DisassociationFrame * | frame | ) | [protected, virtual] |
Implements Ieee80211MgmtBase.
Definition at line 736 of file Ieee80211MgmtSTA.cc.
{
EV << "Received Disassociation frame\n";
const MACAddress& address = frame->getAddress3(); // source address
if (assocTimeoutMsg)
{
// pending association
delete cancelEvent(assocTimeoutMsg);
assocTimeoutMsg = NULL;
}
if (!isAssociated || address!=assocAP.address)
{
EV << "Not associated with that AP -- ignoring frame\n";
delete frame;
return;
}
EV << "Setting isAssociated flag to false\n";
isAssociated = false;
delete cancelEvent(assocAP.beaconTimeoutMsg);
assocAP.beaconTimeoutMsg = NULL;
}
| void Ieee80211MgmtSTA::handleProbeRequestFrame | ( | Ieee80211ProbeRequestFrame * | frame | ) | [protected, virtual] |
Implements Ieee80211MgmtBase.
Definition at line 780 of file Ieee80211MgmtSTA.cc.
{
dropManagementFrame(frame);
}
| void Ieee80211MgmtSTA::handleProbeResponseFrame | ( | Ieee80211ProbeResponseFrame * | frame | ) | [protected, virtual] |
Implements Ieee80211MgmtBase.
Definition at line 785 of file Ieee80211MgmtSTA.cc.
{
EV << "Received Probe Response frame\n";
storeAPInfo(frame->getTransmitterAddress(), frame->getBody());
delete frame;
}
| void Ieee80211MgmtSTA::handleReassociationRequestFrame | ( | Ieee80211ReassociationRequestFrame * | frame | ) | [protected, virtual] |
Implements Ieee80211MgmtBase.
Definition at line 725 of file Ieee80211MgmtSTA.cc.
{
dropManagementFrame(frame);
}
| void Ieee80211MgmtSTA::handleReassociationResponseFrame | ( | Ieee80211ReassociationResponseFrame * | frame | ) | [protected, virtual] |
Implements Ieee80211MgmtBase.
Definition at line 730 of file Ieee80211MgmtSTA.cc.
{
EV << "Received Reassociation Response frame\n";
//TBD handle with the same code as Association Response?
}
| void Ieee80211MgmtSTA::handleTimer | ( | cMessage * | msg | ) | [protected, virtual] |
Implements abstract Ieee80211MgmtBase method
Implements Ieee80211MgmtBase.
Definition at line 113 of file Ieee80211MgmtSTA.cc.
{
if (msg->getKind()==MK_AUTH_TIMEOUT)
{
// authentication timed out
APInfo *ap = (APInfo *)msg->getContextPointer();
EV << "Authentication timed out, AP address = " << ap->address << "\n";
// send back failure report to agent
sendAuthenticationConfirm(ap, PRC_TIMEOUT);
}
else if (msg->getKind()==MK_ASSOC_TIMEOUT)
{
// association timed out
APInfo *ap = (APInfo *)msg->getContextPointer();
EV << "Association timed out, AP address = " << ap->address << "\n";
// send back failure report to agent
sendAssociationConfirm(ap, PRC_TIMEOUT);
}
else if (msg->getKind()==MK_SCAN_MAXCHANNELTIME)
{
// go to next channel during scanning
bool done = scanNextChannel();
if (done)
sendScanConfirm(); // send back response to agents' "scan" command
delete msg;
}
else if (msg->getKind()==MK_SCAN_SENDPROBE)
{
// Active Scan: send a probe request, then wait for minChannelTime (11.1.3.2.2)
delete msg;
sendProbeRequest();
cMessage *timerMsg = new cMessage("minChannelTime", MK_SCAN_MINCHANNELTIME);
scheduleAt(simTime()+scanning.minChannelTime, timerMsg); //XXX actually, we should start waiting after ProbeReq actually got transmitted
}
else if (msg->getKind()==MK_SCAN_MINCHANNELTIME)
{
// Active Scan: after minChannelTime, possibly listen for the remaining time until maxChannelTime
delete msg;
if (scanning.busyChannelDetected)
{
EV << "Busy channel detected during minChannelTime, continuing listening until maxChannelTime elapses\n";
cMessage *timerMsg = new cMessage("maxChannelTime", MK_SCAN_MAXCHANNELTIME);
scheduleAt(simTime()+scanning.maxChannelTime - scanning.minChannelTime, timerMsg);
}
else
{
EV << "Channel was empty during minChannelTime, going to next channel\n";
bool done = scanNextChannel();
if (done)
sendScanConfirm(); // send back response to agents' "scan" command
}
}
else if (msg->getKind()==MK_BEACON_TIMEOUT)
{
// missed a few consecutive beacons
beaconLost();
}
else
{
error("internal error: unrecognized timer '%s'", msg->getName());
}
}
| void Ieee80211MgmtSTA::handleUpperMessage | ( | cPacket * | msg | ) | [protected, virtual] |
Implements abstract Ieee80211MgmtBase method
Implements Ieee80211MgmtBase.
Definition at line 178 of file Ieee80211MgmtSTA.cc.
{
Ieee80211DataFrame *frame = encapsulate(msg);
sendOrEnqueue(frame);
}
| void Ieee80211MgmtSTA::initialize | ( | int | stage | ) | [protected, virtual] |
Reimplemented from Ieee80211MgmtBase.
Definition at line 88 of file Ieee80211MgmtSTA.cc.
{
Ieee80211MgmtBase::initialize(stage);
if (stage==0)
{
isScanning = false;
isAssociated = false;
assocTimeoutMsg = NULL;
nb = NotificationBoardAccess().get();
// determine numChannels (needed when we're told to scan "all" channels)
//XXX find a better way than directly accessing channelControl
cModule *cc = ChannelControl::get();
numChannels = cc->par("numChannels");
WATCH(isScanning);
WATCH(isAssociated);
WATCH(scanning);
WATCH(assocAP);
WATCH_LIST(apList);
}
}
| Ieee80211MgmtSTA::APInfo * Ieee80211MgmtSTA::lookupAP | ( | const MACAddress & | address | ) | [protected, virtual] |
Utility function: looks up AP in our AP list. Returns NULL if not found.
Definition at line 224 of file Ieee80211MgmtSTA.cc.
Referenced by handleAssociationResponseFrame(), handleAuthenticationFrame(), handleDeauthenticationFrame(), processAssociateCommand(), processAuthenticateCommand(), processDeauthenticateCommand(), and storeAPInfo().
| virtual int Ieee80211MgmtSTA::numInitStages | ( | ) | const [inline, protected, virtual] |
Reimplemented from Ieee80211MgmtBase.
Definition at line 106 of file Ieee80211MgmtSTA.h.
{return 2;}
| void Ieee80211MgmtSTA::processAssociateCommand | ( | Ieee80211Prim_AssociateRequest * | ctrl | ) | [protected, virtual] |
Definition at line 483 of file Ieee80211MgmtSTA.cc.
Referenced by handleCommand(), and processReassociateCommand().
{
const MACAddress& address = ctrl->getAddress();
APInfo *ap = lookupAP(address);
if (!ap)
error("processAssociateCommand: AP not known: address = %s", address.str().c_str());
startAssociation(ap, ctrl->getTimeout());
}
| void Ieee80211MgmtSTA::processAuthenticateCommand | ( | Ieee80211Prim_AuthenticateRequest * | ctrl | ) | [protected, virtual] |
Definition at line 448 of file Ieee80211MgmtSTA.cc.
Referenced by handleCommand().
{
const MACAddress& address = ctrl->getAddress();
APInfo *ap = lookupAP(address);
if (!ap)
error("processAuthenticateCommand: AP not known: address = %s", address.str().c_str());
startAuthentication(ap, ctrl->getTimeout());
}
| void Ieee80211MgmtSTA::processDeauthenticateCommand | ( | Ieee80211Prim_DeauthenticateRequest * | ctrl | ) | [protected, virtual] |
Definition at line 457 of file Ieee80211MgmtSTA.cc.
Referenced by handleCommand().
{
const MACAddress& address = ctrl->getAddress();
APInfo *ap = lookupAP(address);
if (!ap)
error("processDeauthenticateCommand: AP not known: address = %s", address.str().c_str());
if (isAssociated && assocAP.address==address)
disassociate();
if (ap->isAuthenticated)
ap->isAuthenticated = false;
// cancel possible pending authentication timer
if (ap->authTimeoutMsg)
{
delete cancelEvent(ap->authTimeoutMsg);
ap->authTimeoutMsg = NULL;
}
// create and send deauthentication request
Ieee80211DeauthenticationFrame *frame = new Ieee80211DeauthenticationFrame("Deauth");
frame->getBody().setReasonCode(ctrl->getReasonCode());
sendManagementFrame(frame, address);
}
| void Ieee80211MgmtSTA::processDisassociateCommand | ( | Ieee80211Prim_DisassociateRequest * | ctrl | ) | [protected, virtual] |
Definition at line 499 of file Ieee80211MgmtSTA.cc.
Referenced by handleCommand().
{
const MACAddress& address = ctrl->getAddress();
if (isAssociated && address==assocAP.address)
{
disassociate();
}
else if (assocTimeoutMsg)
{
// pending association
delete cancelEvent(assocTimeoutMsg);
assocTimeoutMsg = NULL;
}
// create and send disassociation request
Ieee80211DisassociationFrame *frame = new Ieee80211DisassociationFrame("Disass");
frame->getBody().setReasonCode(ctrl->getReasonCode());
sendManagementFrame(frame, address);
}
| void Ieee80211MgmtSTA::processReassociateCommand | ( | Ieee80211Prim_ReassociateRequest * | ctrl | ) | [protected, virtual] |
Definition at line 492 of file Ieee80211MgmtSTA.cc.
Referenced by handleCommand().
{
// treat the same way as association
//XXX refine
processAssociateCommand(ctrl);
}
| void Ieee80211MgmtSTA::processScanCommand | ( | Ieee80211Prim_ScanRequest * | ctrl | ) | [protected, virtual] |
Definition at line 337 of file Ieee80211MgmtSTA.cc.
Referenced by handleCommand().
{
EV << "Received Scan Request from agent, clearing AP list and starting scanning...\n";
if (isScanning)
error("processScanCommand: scanning already in progress");
if (isAssociated)
{
disassociate();
}
else if (assocTimeoutMsg)
{
EV << "Cancelling ongoing association process\n";
delete cancelEvent(assocTimeoutMsg);
assocTimeoutMsg = NULL;
}
// clear existing AP list (and cancel any pending authentications) -- we want to start with a clean page
clearAPList();
// fill in scanning state
ASSERT(ctrl->getBSSType()==BSSTYPE_INFRASTRUCTURE);
scanning.bssid = ctrl->getBSSID().isUnspecified() ? MACAddress::BROADCAST_ADDRESS : ctrl->getBSSID();
scanning.ssid = ctrl->getSSID();
scanning.activeScan = ctrl->getActiveScan();
scanning.probeDelay = ctrl->getProbeDelay();
scanning.channelList.clear();
scanning.minChannelTime = ctrl->getMinChannelTime();
scanning.maxChannelTime = ctrl->getMaxChannelTime();
ASSERT(scanning.minChannelTime <= scanning.maxChannelTime);
// channel list to scan (default: all channels)
for (int i=0; i<(int)ctrl->getChannelListArraySize(); i++)
scanning.channelList.push_back(ctrl->getChannelList(i));
if (scanning.channelList.empty())
for (int i=0; i<numChannels; i++)
scanning.channelList.push_back(i);
// start scanning
if (scanning.activeScan)
nb->subscribe(this, NF_RADIOSTATE_CHANGED);
scanning.currentChannelIndex = -1; // so we'll start with index==0
isScanning = true;
scanNextChannel();
}
| void Ieee80211MgmtSTA::receiveChangeNotification | ( | int | category, |
| const cPolymorphic * | details | ||
| ) | [protected, virtual] |
Called by the NotificationBoard whenever a change occurs we're interested in
Implements INotifiable.
Definition at line 320 of file Ieee80211MgmtSTA.cc.
{
Enter_Method_Silent();
printNotificationBanner(category, details);
// Note that we are only subscribed during scanning!
if (category==NF_RADIOSTATE_CHANGED)
{
RadioState::State radioState = check_and_cast<RadioState *>(details)->getState();
if (radioState==RadioState::RECV)
{
EV << "busy radio channel detected during scanning\n";
scanning.busyChannelDetected = true;
}
}
}
| bool Ieee80211MgmtSTA::scanNextChannel | ( | ) | [protected, virtual] |
Switches to the next channel to scan; returns true if done (there wasn't any more channel to scan).
Definition at line 383 of file Ieee80211MgmtSTA.cc.
Referenced by handleTimer(), and processScanCommand().
{
// if we're already at the last channel, we're through
if (scanning.currentChannelIndex==(int)scanning.channelList.size()-1)
{
EV << "Finished scanning last channel\n";
if (scanning.activeScan)
nb->unsubscribe(this, NF_RADIOSTATE_CHANGED);
isScanning = false;
return true; // we're done
}
// tune to next channel
int newChannel = scanning.channelList[++scanning.currentChannelIndex];
changeChannel(newChannel);
scanning.busyChannelDetected = false;
if (scanning.activeScan)
{
// Active Scan: first wait probeDelay, then send a probe. Listening
// for minChannelTime or maxChannelTime takes place after that. (11.1.3.2)
scheduleAt(simTime()+scanning.probeDelay, new cMessage("sendProbe", MK_SCAN_SENDPROBE));
}
else
{
// Passive Scan: spend maxChannelTime on the channel (11.1.3.1)
cMessage *timerMsg = new cMessage("maxChannelTime", MK_SCAN_MAXCHANNELTIME);
scheduleAt(simTime()+scanning.maxChannelTime, timerMsg);
}
return false;
}
| void Ieee80211MgmtSTA::sendAssociationConfirm | ( | APInfo * | ap, |
| int | resultCode | ||
| ) | [protected, virtual] |
Sends back result of association to the agent
Definition at line 537 of file Ieee80211MgmtSTA.cc.
Referenced by handleAssociationResponseFrame(), and handleTimer().
{
sendConfirm(new Ieee80211Prim_AssociateConfirm(), resultCode);
}
| void Ieee80211MgmtSTA::sendAuthenticationConfirm | ( | APInfo * | ap, |
| int | resultCode | ||
| ) | [protected, virtual] |
Sends back result of authentication to the agent
Definition at line 530 of file Ieee80211MgmtSTA.cc.
Referenced by handleAuthenticationFrame(), and handleTimer().
{
Ieee80211Prim_AuthenticateConfirm *confirm = new Ieee80211Prim_AuthenticateConfirm();
confirm->setAddress(ap->address);
sendConfirm(confirm, resultCode);
}
| void Ieee80211MgmtSTA::sendConfirm | ( | Ieee80211PrimConfirm * | confirm, |
| int | resultCode | ||
| ) | [protected, virtual] |
Utility function: sends a confirmation to the agent
Definition at line 542 of file Ieee80211MgmtSTA.cc.
Referenced by sendAssociationConfirm(), sendAuthenticationConfirm(), and sendScanConfirm().
{
confirm->setResultCode(resultCode);
cMessage *msg = new cMessage(confirm->getClassName());
msg->setControlInfo(confirm);
send(msg, "agentOut");
}
| void Ieee80211MgmtSTA::sendManagementFrame | ( | Ieee80211ManagementFrame * | frame, |
| const MACAddress & | address | ||
| ) | [protected, virtual] |
Utility function: sends a management frame
Definition at line 258 of file Ieee80211MgmtSTA.cc.
Referenced by handleAuthenticationFrame(), processDeauthenticateCommand(), processDisassociateCommand(), sendProbeRequest(), startAssociation(), and startAuthentication().
{
// frame goes to the specified AP
frame->setToDS(true);
frame->setReceiverAddress(address);
//XXX set sequenceNumber?
sendOrEnqueue(frame);
}
| void Ieee80211MgmtSTA::sendProbeRequest | ( | ) | [protected, virtual] |
Broadcasts a Probe Request
Definition at line 416 of file Ieee80211MgmtSTA.cc.
Referenced by handleTimer().
{
EV << "Sending Probe Request, BSSID=" << scanning.bssid << ", SSID=\"" << scanning.ssid << "\"\n";
Ieee80211ProbeRequestFrame *frame = new Ieee80211ProbeRequestFrame("ProbeReq");
frame->getBody().setSSID(scanning.ssid.c_str());
sendManagementFrame(frame, scanning.bssid);
}
| void Ieee80211MgmtSTA::sendScanConfirm | ( | ) | [protected, virtual] |
Sends back result of scanning to the agent
Definition at line 424 of file Ieee80211MgmtSTA.cc.
Referenced by handleTimer().
{
EV << "Scanning complete, found " << apList.size() << " APs, sending confirmation to agent\n";
// copy apList contents into a ScanConfirm primitive and send it back
int n = apList.size();
Ieee80211Prim_ScanConfirm *confirm = new Ieee80211Prim_ScanConfirm();
confirm->setBssListArraySize(n);
AccessPointList::iterator it = apList.begin();
//XXX filter for req'd bssid and ssid
for (int i=0; i<n; i++, it++)
{
APInfo *ap = &(*it);
Ieee80211Prim_BSSDescription& bss = confirm->getBssList(i);
bss.setChannelNumber(ap->channel);
bss.setBSSID(ap->address);
bss.setSSID(ap->ssid.c_str());
bss.setSupportedRates(ap->supportedRates);
bss.setBeaconInterval(ap->beaconInterval);
bss.setRxPower(ap->rxPower);
}
sendConfirm(confirm, PRC_SUCCESS);
}
| void Ieee80211MgmtSTA::startAssociation | ( | APInfo * | ap, |
| simtime_t | timeout | ||
| ) | [protected, virtual] |
Utility function: sends association request
Definition at line 294 of file Ieee80211MgmtSTA.cc.
Referenced by processAssociateCommand().
{
if (isAssociated || assocTimeoutMsg)
error("startAssociation: already associated or association currently in progress");
if (!ap->isAuthenticated)
error("startAssociation: not yet authenticated with AP address=", ap->address.str().c_str());
// switch to that channel
changeChannel(ap->channel);
// create and send association request
Ieee80211AssociationRequestFrame *frame = new Ieee80211AssociationRequestFrame("Assoc");
//XXX set the following too?
// string SSID
// Ieee80211SupportedRatesElement supportedRates;
sendManagementFrame(frame, ap->address);
// schedule timeout
ASSERT(assocTimeoutMsg==NULL);
assocTimeoutMsg = new cMessage("assocTimeout", MK_ASSOC_TIMEOUT);
assocTimeoutMsg->setContextPointer(ap);
scheduleAt(simTime()+timeout, assocTimeoutMsg);
}
| void Ieee80211MgmtSTA::startAuthentication | ( | APInfo * | ap, |
| simtime_t | timeout | ||
| ) | [protected, virtual] |
Utility function: sends authentication request
Definition at line 268 of file Ieee80211MgmtSTA.cc.
Referenced by processAuthenticateCommand().
{
if (ap->authTimeoutMsg)
error("startAuthentication: authentication currently in progress with AP address=", ap->address.str().c_str());
if (ap->isAuthenticated)
error("startAuthentication: already authenticated with AP address=", ap->address.str().c_str());
changeChannel(ap->channel);
EV << "Sending initial Authentication frame with seqNum=1\n";
// create and send first authentication frame
Ieee80211AuthenticationFrame *frame = new Ieee80211AuthenticationFrame("Auth");
frame->getBody().setSequenceNumber(1);
//XXX frame length could be increased to account for challenge text length etc.
sendManagementFrame(frame, ap->address);
ap->authSeqExpected = 2;
// schedule timeout
ASSERT(ap->authTimeoutMsg==NULL);
ap->authTimeoutMsg = new cMessage("authTimeout", MK_AUTH_TIMEOUT);
ap->authTimeoutMsg->setContextPointer(ap);
scheduleAt(simTime()+timeout, ap->authTimeoutMsg);
}
| int Ieee80211MgmtSTA::statusCodeToPrimResultCode | ( | int | statusCode | ) | [protected, virtual] |
Utility function: converts Ieee80211StatusCode (->frame) to Ieee80211PrimResultCode (->primitive)
Definition at line 550 of file Ieee80211MgmtSTA.cc.
Referenced by handleAssociationResponseFrame(), and handleAuthenticationFrame().
{
return statusCode==SC_SUCCESSFUL ? PRC_SUCCESS : PRC_REFUSED;
}
| void Ieee80211MgmtSTA::storeAPInfo | ( | const MACAddress & | address, |
| const Ieee80211BeaconFrameBody & | body | ||
| ) | [protected, virtual] |
Stores AP info received in a beacon or probe response
Definition at line 792 of file Ieee80211MgmtSTA.cc.
Referenced by handleBeaconFrame(), and handleProbeResponseFrame().
{
APInfo *ap = lookupAP(address);
if (ap)
{
EV << "AP address=" << address << ", SSID=" << body.getSSID() << " already in our AP list, refreshing the info\n";
}
else
{
EV << "Inserting AP address=" << address << ", SSID=" << body.getSSID() << " into our AP list\n";
apList.push_back(APInfo());
ap = &apList.back();
}
ap->channel = body.getChannelNumber();
ap->address = address;
ap->ssid = body.getSSID();
ap->supportedRates = body.getSupportedRates();
ap->beaconInterval = body.getBeaconInterval();
//XXX where to get this from?
//ap->rxPower = ...
}
Member Data Documentation
AccessPointList Ieee80211MgmtSTA::apList [protected] |
Definition at line 98 of file Ieee80211MgmtSTA.h.
Referenced by clearAPList(), initialize(), lookupAP(), sendScanConfirm(), and storeAPInfo().
AssociatedAPInfo Ieee80211MgmtSTA::assocAP [protected] |
Definition at line 103 of file Ieee80211MgmtSTA.h.
Referenced by disassociate(), encapsulate(), handleAssociationResponseFrame(), handleBeaconFrame(), handleDisassociationFrame(), initialize(), processDeauthenticateCommand(), and processDisassociateCommand().
cMessage* Ieee80211MgmtSTA::assocTimeoutMsg [protected] |
Definition at line 102 of file Ieee80211MgmtSTA.h.
Referenced by handleAssociationResponseFrame(), handleDisassociationFrame(), initialize(), processDisassociateCommand(), processScanCommand(), and startAssociation().
bool Ieee80211MgmtSTA::isAssociated [protected] |
Definition at line 101 of file Ieee80211MgmtSTA.h.
Referenced by disassociate(), handleAssociationResponseFrame(), handleBeaconFrame(), handleDisassociationFrame(), initialize(), processDeauthenticateCommand(), processDisassociateCommand(), processScanCommand(), and startAssociation().
bool Ieee80211MgmtSTA::isScanning [protected] |
Definition at line 92 of file Ieee80211MgmtSTA.h.
Referenced by initialize(), processScanCommand(), and scanNextChannel().
NotificationBoard* Ieee80211MgmtSTA::nb [protected] |
Definition at line 86 of file Ieee80211MgmtSTA.h.
Referenced by beaconLost(), handleAssociationResponseFrame(), initialize(), processScanCommand(), and scanNextChannel().
int Ieee80211MgmtSTA::numChannels [protected] |
Definition at line 89 of file Ieee80211MgmtSTA.h.
Referenced by initialize(), and processScanCommand().
ScanningInfo Ieee80211MgmtSTA::scanning [protected] |
Definition at line 93 of file Ieee80211MgmtSTA.h.
Referenced by handleTimer(), initialize(), processScanCommand(), receiveChangeNotification(), scanNextChannel(), and sendProbeRequest().
The documentation for this class was generated from the following files:
