Examples with SipException javax.sip.SipException used on opensource projects

Example 31 with SipException

use of javax.sip.SipException in project XobotOS by xamarin.

the class SipProviderImpl method sendRequest.

/*
     * (non-Javadoc)
     *
     * @see javax.sip.SipProvider#sendRequest(javax.sip.message.Request)
     */
public void sendRequest(Request request) throws SipException {
    if (!sipStack.isAlive())
        throw new SipException("Stack is stopped.");
    // message.
    if (((SIPRequest) request).getRequestLine() != null && request.getMethod().equals(Request.ACK)) {
        Dialog dialog = sipStack.getDialog(((SIPRequest) request).getDialogId(false));
        if (dialog != null && dialog.getState() != null) {
            if (sipStack.isLoggingEnabled())
                sipStack.getStackLogger().logWarning("Dialog exists -- you may want to use Dialog.sendAck() " + dialog.getState());
        }
    }
    Hop hop = sipStack.getRouter((SIPRequest) request).getNextHop(request);
    if (hop == null)
        throw new SipException("could not determine next hop!");
    SIPRequest sipRequest = (SIPRequest) request;
    // Null request is used to send default proxy keepalive messages.
    if ((!sipRequest.isNullRequest()) && sipRequest.getTopmostVia() == null)
        throw new SipException("Invalid SipRequest -- no via header!");
    try {
        /*
             * JvB: Via branch should already be OK, dont touch it here? Some
             * apps forward statelessly, and then it's not set. So set only when
             * not set already, dont overwrite CANCEL branch here..
             */
        if (!sipRequest.isNullRequest()) {
            Via via = sipRequest.getTopmostVia();
            String branch = via.getBranch();
            if (branch == null || branch.length() == 0) {
                via.setBranch(sipRequest.getTransactionId());
            }
        }
        MessageChannel messageChannel = null;
        if (this.listeningPoints.containsKey(hop.getTransport().toUpperCase()))
            messageChannel = sipStack.createRawMessageChannel(this.getListeningPoint(hop.getTransport()).getIPAddress(), this.getListeningPoint(hop.getTransport()).getPort(), hop);
        if (messageChannel != null) {
            messageChannel.sendMessage((SIPMessage) sipRequest, hop);
        } else {
            throw new SipException("Could not create a message channel for " + hop.toString());
        }
    } catch (IOException ex) {
        if (sipStack.isLoggingEnabled()) {
            sipStack.getStackLogger().logException(ex);
        }
        throw new SipException("IO Exception occured while Sending Request", ex);
    } catch (ParseException ex1) {
        InternalErrorHandler.handleException(ex1);
    } finally {
        if (sipStack.isLoggingEnabled())
            sipStack.getStackLogger().logDebug("done sending " + request.getMethod() + " to hop " + hop);
    }
}

Example 32 with SipException

use of javax.sip.SipException in project XobotOS by xamarin.

the class AuthenticationHelperImpl method handleChallenge.

/*
     * (non-Javadoc)
     *
     * @see gov.nist.javax.sip.clientauthutils.AuthenticationHelper#handleChallenge(javax.sip.message.Response,
     *      javax.sip.ClientTransaction, javax.sip.SipProvider)
     */
public ClientTransaction handleChallenge(Response challenge, ClientTransaction challengedTransaction, SipProvider transactionCreator, int cacheTime) throws SipException, NullPointerException {
    try {
        if (sipStack.isLoggingEnabled()) {
            sipStack.getStackLogger().logDebug("handleChallenge: " + challenge);
        }
        SIPRequest challengedRequest = ((SIPRequest) challengedTransaction.getRequest());
        Request reoriginatedRequest = null;
        /*
             * If the challenged request is part of a Dialog and the
             * Dialog is confirmed the re-originated request should be
             * generated as an in-Dialog request.
             */
        if (challengedRequest.getToTag() != null || challengedTransaction.getDialog() == null || challengedTransaction.getDialog().getState() != DialogState.CONFIRMED) {
            reoriginatedRequest = (Request) challengedRequest.clone();
        } else {
            /*
                 * Re-originate the request by consulting the dialog. In particular
                 * the route set could change between the original request and the 
                 * in-dialog challenge.
                 */
            reoriginatedRequest = challengedTransaction.getDialog().createRequest(challengedRequest.getMethod());
            Iterator<String> headerNames = challengedRequest.getHeaderNames();
            while (headerNames.hasNext()) {
                String headerName = headerNames.next();
                if (reoriginatedRequest.getHeader(headerName) != null) {
                    ListIterator<Header> iterator = reoriginatedRequest.getHeaders(headerName);
                    while (iterator.hasNext()) {
                        reoriginatedRequest.addHeader(iterator.next());
                    }
                }
            }
        }
        // remove the branch id so that we could use the request in a new
        // transaction
        removeBranchID(reoriginatedRequest);
        if (challenge == null || reoriginatedRequest == null) {
            throw new NullPointerException("A null argument was passed to handle challenge.");
        }
        ListIterator authHeaders = null;
        if (challenge.getStatusCode() == Response.UNAUTHORIZED) {
            authHeaders = challenge.getHeaders(WWWAuthenticateHeader.NAME);
        } else if (challenge.getStatusCode() == Response.PROXY_AUTHENTICATION_REQUIRED) {
            authHeaders = challenge.getHeaders(ProxyAuthenticateHeader.NAME);
        } else {
            throw new IllegalArgumentException("Unexpected status code ");
        }
        if (authHeaders == null) {
            throw new IllegalArgumentException("Could not find WWWAuthenticate or ProxyAuthenticate headers");
        }
        // Remove all authorization headers from the request (we'll re-add them
        // from cache)
        reoriginatedRequest.removeHeader(AuthorizationHeader.NAME);
        reoriginatedRequest.removeHeader(ProxyAuthorizationHeader.NAME);
        // rfc 3261 says that the cseq header should be augmented for the new
        // request. do it here so that the new dialog (created together with
        // the new client transaction) takes it into account.
        // Bug report - Fredrik Wickstrom
        CSeqHeader cSeq = (CSeqHeader) reoriginatedRequest.getHeader((CSeqHeader.NAME));
        try {
            cSeq.setSeqNumber(cSeq.getSeqNumber() + 1l);
        } catch (InvalidArgumentException ex) {
            throw new SipException("Invalid CSeq -- could not increment : " + cSeq.getSeqNumber());
        }
        /* Resolve this to the next hop based on the previous lookup. If we are not using
             * lose routing (RFC2543) then just attach hop as a maddr param.
             */
        if (challengedRequest.getRouteHeaders() == null) {
            Hop hop = ((SIPClientTransaction) challengedTransaction).getNextHop();
            SipURI sipUri = (SipURI) reoriginatedRequest.getRequestURI();
            // BEGIN android-added
            if (!hop.getHost().equalsIgnoreCase(sipUri.getHost()) && !hop.equals(sipStack.getRouter(challengedRequest).getOutboundProxy()))
                // END android-added
                sipUri.setMAddrParam(hop.getHost());
            if (hop.getPort() != -1)
                sipUri.setPort(hop.getPort());
        }
        ClientTransaction retryTran = transactionCreator.getNewClientTransaction(reoriginatedRequest);
        WWWAuthenticateHeader authHeader = null;
        SipURI requestUri = (SipURI) challengedTransaction.getRequest().getRequestURI();
        while (authHeaders.hasNext()) {
            authHeader = (WWWAuthenticateHeader) authHeaders.next();
            String realm = authHeader.getRealm();
            AuthorizationHeader authorization = null;
            String sipDomain;
            if (this.accountManager instanceof SecureAccountManager) {
                UserCredentialHash credHash = ((SecureAccountManager) this.accountManager).getCredentialHash(challengedTransaction, realm);
                URI uri = reoriginatedRequest.getRequestURI();
                sipDomain = credHash.getSipDomain();
                authorization = this.getAuthorization(reoriginatedRequest.getMethod(), uri.toString(), (reoriginatedRequest.getContent() == null) ? "" : new String(reoriginatedRequest.getRawContent()), authHeader, credHash);
            } else {
                UserCredentials userCreds = ((AccountManager) this.accountManager).getCredentials(challengedTransaction, realm);
                sipDomain = userCreds.getSipDomain();
                if (userCreds == null)
                    throw new SipException("Cannot find user creds for the given user name and realm");
                // we haven't yet authenticated this realm since we were
                // started.
                authorization = this.getAuthorization(reoriginatedRequest.getMethod(), reoriginatedRequest.getRequestURI().toString(), (reoriginatedRequest.getContent() == null) ? "" : new String(reoriginatedRequest.getRawContent()), authHeader, userCreds);
            }
            if (sipStack.isLoggingEnabled())
                sipStack.getStackLogger().logDebug("Created authorization header: " + authorization.toString());
            if (cacheTime != 0)
                cachedCredentials.cacheAuthorizationHeader(sipDomain, authorization, cacheTime);
            reoriginatedRequest.addHeader(authorization);
        }
        if (sipStack.isLoggingEnabled()) {
            sipStack.getStackLogger().logDebug("Returning authorization transaction." + retryTran);
        }
        return retryTran;
    } catch (SipException ex) {
        throw ex;
    } catch (Exception ex) {
        sipStack.getStackLogger().logError("Unexpected exception ", ex);
        throw new SipException("Unexpected exception ", ex);
    }
}

Example 33 with SipException

use of javax.sip.SipException in project XobotOS by xamarin.

the class SIPClientTransaction method createAck.

/*
     * (non-Javadoc)
     * 
     * @see javax.sip.ClientTransaction#createAck()
     */
public Request createAck() throws SipException {
    SIPRequest originalRequest = this.getOriginalRequest();
    if (originalRequest == null)
        throw new SipException("bad state " + getState());
    if (getMethod().equalsIgnoreCase(Request.ACK)) {
        throw new SipException("Cannot ACK an ACK!");
    } else if (lastResponse == null) {
        throw new SipException("bad Transaction state");
    } else if (lastResponse.getStatusCode() < 200) {
        if (sipStack.isLoggingEnabled()) {
            sipStack.getStackLogger().logDebug("lastResponse = " + lastResponse);
        }
        throw new SipException("Cannot ACK a provisional response!");
    }
    SIPRequest ackRequest = originalRequest.createAckRequest((To) lastResponse.getTo());
    // Pull the record route headers from the last reesponse.
    RecordRouteList recordRouteList = lastResponse.getRecordRouteHeaders();
    if (recordRouteList == null) {
        // request URI.
        if (lastResponse.getContactHeaders() != null && lastResponse.getStatusCode() / 100 != 3) {
            Contact contact = (Contact) lastResponse.getContactHeaders().getFirst();
            javax.sip.address.URI uri = (javax.sip.address.URI) contact.getAddress().getURI().clone();
            ackRequest.setRequestURI(uri);
        }
        return ackRequest;
    }
    ackRequest.removeHeader(RouteHeader.NAME);
    RouteList routeList = new RouteList();
    // start at the end of the list and walk backwards
    ListIterator<RecordRoute> li = recordRouteList.listIterator(recordRouteList.size());
    while (li.hasPrevious()) {
        RecordRoute rr = (RecordRoute) li.previous();
        Route route = new Route();
        route.setAddress((AddressImpl) ((AddressImpl) rr.getAddress()).clone());
        route.setParameters((NameValueList) rr.getParameters().clone());
        routeList.add(route);
    }
    Contact contact = null;
    if (lastResponse.getContactHeaders() != null) {
        contact = (Contact) lastResponse.getContactHeaders().getFirst();
    }
    if (!((SipURI) ((Route) routeList.getFirst()).getAddress().getURI()).hasLrParam()) {
        // Contact may not yet be there (bug reported by Andreas B).
        Route route = null;
        if (contact != null) {
            route = new Route();
            route.setAddress((AddressImpl) ((AddressImpl) (contact.getAddress())).clone());
        }
        Route firstRoute = (Route) routeList.getFirst();
        routeList.removeFirst();
        javax.sip.address.URI uri = firstRoute.getAddress().getURI();
        ackRequest.setRequestURI(uri);
        if (route != null)
            routeList.add(route);
        ackRequest.addHeader(routeList);
    } else {
        if (contact != null) {
            javax.sip.address.URI uri = (javax.sip.address.URI) contact.getAddress().getURI().clone();
            ackRequest.setRequestURI(uri);
            ackRequest.addHeader(routeList);
        }
    }
    return ackRequest;
}

Example 34 with SipException

use of javax.sip.SipException in project XobotOS by xamarin.

the class SIPClientTransaction method sendRequest.

/*
     * (non-Javadoc)
     * 
     * @see javax.sip.ClientTransaction#sendRequest()
     */
public void sendRequest() throws SipException {
    SIPRequest sipRequest = this.getOriginalRequest();
    if (this.getState() != null)
        throw new SipException("Request already sent");
    if (sipStack.isLoggingEnabled()) {
        sipStack.getStackLogger().logDebug("sendRequest() " + sipRequest);
    }
    try {
        sipRequest.checkHeaders();
    } catch (ParseException ex) {
        if (sipStack.isLoggingEnabled())
            sipStack.getStackLogger().logError("missing required header");
        throw new SipException(ex.getMessage());
    }
    if (getMethod().equals(Request.SUBSCRIBE) && sipRequest.getHeader(ExpiresHeader.NAME) == null) {
        /*
             * If no "Expires" header is present in a SUBSCRIBE request, the implied default is
             * defined by the event package being used.
             * 
             */
        if (sipStack.isLoggingEnabled())
            sipStack.getStackLogger().logWarning("Expires header missing in outgoing subscribe --" + " Notifier will assume implied value on event package");
    }
    try {
        /*
             * This check is removed because it causes problems for load balancers ( See issue
             * 136) reported by Raghav Ramesh ( BT )
             * 
             */
        if (this.getOriginalRequest().getMethod().equals(Request.CANCEL) && sipStack.isCancelClientTransactionChecked()) {
            SIPClientTransaction ct = (SIPClientTransaction) sipStack.findCancelTransaction(this.getOriginalRequest(), false);
            if (ct == null) {
                /*
                     * If the original request has generated a final response, the CANCEL SHOULD
                     * NOT be sent, as it is an effective no-op, since CANCEL has no effect on
                     * requests that have already generated a final response.
                     */
                throw new SipException("Could not find original tx to cancel. RFC 3261 9.1");
            } else if (ct.getState() == null) {
                throw new SipException("State is null no provisional response yet -- cannot cancel RFC 3261 9.1");
            } else if (!ct.getMethod().equals(Request.INVITE)) {
                throw new SipException("Cannot cancel non-invite requests RFC 3261 9.1");
            }
        } else if (this.getOriginalRequest().getMethod().equals(Request.BYE) || this.getOriginalRequest().getMethod().equals(Request.NOTIFY)) {
            SIPDialog dialog = sipStack.getDialog(this.getOriginalRequest().getDialogId(false));
            // Dialog
            if (this.getSipProvider().isAutomaticDialogSupportEnabled() && dialog != null) {
                throw new SipException("Dialog is present and AutomaticDialogSupport is enabled for " + " the provider -- Send the Request using the Dialog.sendRequest(transaction)");
            }
        }
        // Only map this after the fist request is sent out.
        if (this.getMethod().equals(Request.INVITE)) {
            SIPDialog dialog = this.getDefaultDialog();
            if (dialog != null && dialog.isBackToBackUserAgent()) {
                // Block sending re-INVITE till we see the ACK.
                if (!dialog.takeAckSem()) {
                    throw new SipException("Failed to take ACK semaphore");
                }
            }
        }
        this.isMapped = true;
        this.sendMessage(sipRequest);
    } catch (IOException ex) {
        this.setState(TransactionState.TERMINATED);
        throw new SipException("IO Error sending request", ex);
    }
}

Example 35 with SipException

use of javax.sip.SipException in project XobotOS by xamarin.

the class SIPServerTransaction method sendResponse.

/*
     * (non-Javadoc)
     *
     * @see javax.sip.ServerTransaction#sendResponse(javax.sip.message.Response)
     */
public void sendResponse(Response response) throws SipException {
    SIPResponse sipResponse = (SIPResponse) response;
    SIPDialog dialog = this.dialog;
    if (response == null)
        throw new NullPointerException("null response");
    try {
        sipResponse.checkHeaders();
    } catch (ParseException ex) {
        throw new SipException(ex.getMessage());
    }
    // check for meaningful response.
    if (!sipResponse.getCSeq().getMethod().equals(this.getMethod())) {
        throw new SipException("CSeq method does not match Request method of request that created the tx.");
    }
    /*
         * 200-class responses to SUBSCRIBE requests also MUST contain an "Expires" header. The
         * period of time in the response MAY be shorter but MUST NOT be longer than specified in
         * the request.
         */
    if (this.getMethod().equals(Request.SUBSCRIBE) && response.getStatusCode() / 100 == 2) {
        if (response.getHeader(ExpiresHeader.NAME) == null) {
            throw new SipException("Expires header is mandatory in 2xx response of SUBSCRIBE");
        } else {
            Expires requestExpires = (Expires) this.getOriginalRequest().getExpires();
            Expires responseExpires = (Expires) response.getExpires();
            /*
                 * If no "Expires" header is present in a SUBSCRIBE request, the implied default
                 * is defined by the event package being used.
                 */
            if (requestExpires != null && responseExpires.getExpires() > requestExpires.getExpires()) {
                throw new SipException("Response Expires time exceeds request Expires time : See RFC 3265 3.1.1");
            }
        }
    }
    // Check for mandatory header.
    if (sipResponse.getStatusCode() == 200 && sipResponse.getCSeq().getMethod().equals(Request.INVITE) && sipResponse.getHeader(ContactHeader.NAME) == null)
        throw new SipException("Contact Header is mandatory for the OK to the INVITE");
    if (!this.isMessagePartOfTransaction((SIPMessage) response)) {
        throw new SipException("Response does not belong to this transaction.");
    }
    // Fix up the response if the dialog has already been established.
    try {
        /*
             * The UAS MAY send a final response to the initial request before
             * having received PRACKs for all unacknowledged reliable provisional responses,
             * unless the final response is 2xx and any of the unacknowledged reliable provisional
             * responses contained a session description. In that case, it MUST NOT send a final
             * response until those provisional responses are acknowledged.
             */
        if (this.pendingReliableResponse != null && this.getDialog() != null && this.getState() != TransactionState.TERMINATED && ((SIPResponse) response).getContentTypeHeader() != null && response.getStatusCode() / 100 == 2 && ((SIPResponse) response).getContentTypeHeader().getContentType().equalsIgnoreCase("application") && ((SIPResponse) response).getContentTypeHeader().getContentSubType().equalsIgnoreCase("sdp")) {
            try {
                boolean acquired = this.provisionalResponseSem.tryAcquire(1, TimeUnit.SECONDS);
                if (!acquired) {
                    throw new SipException("cannot send response -- unacked povisional");
                }
            } catch (Exception ex) {
                this.sipStack.getStackLogger().logError("Could not acquire PRACK sem ", ex);
            }
        } else {
            // pending response task.
            if (this.pendingReliableResponse != null && sipResponse.isFinalResponse()) {
                this.provisionalResponseTask.cancel();
                this.provisionalResponseTask = null;
            }
        }
        // being sent makes sense.
        if (dialog != null) {
            if (sipResponse.getStatusCode() / 100 == 2 && sipStack.isDialogCreated(sipResponse.getCSeq().getMethod())) {
                if (dialog.getLocalTag() == null && sipResponse.getTo().getTag() == null) {
                    // Trying to send final response and user forgot to set
                    // to
                    // tag on the response -- be nice and assign the tag for
                    // the user.
                    sipResponse.getTo().setTag(Utils.getInstance().generateTag());
                } else if (dialog.getLocalTag() != null && sipResponse.getToTag() == null) {
                    sipResponse.setToTag(dialog.getLocalTag());
                } else if (dialog.getLocalTag() != null && sipResponse.getToTag() != null && !dialog.getLocalTag().equals(sipResponse.getToTag())) {
                    throw new SipException("Tag mismatch dialogTag is " + dialog.getLocalTag() + " responseTag is " + sipResponse.getToTag());
                }
            }
            if (!sipResponse.getCallId().getCallId().equals(dialog.getCallId().getCallId())) {
                throw new SipException("Dialog mismatch!");
            }
        }
        // Backward compatibility slippery slope....
        // Only set the from tag in the response when the
        // incoming request has a from tag.
        String fromTag = ((SIPRequest) this.getRequest()).getFrom().getTag();
        if (fromTag != null && sipResponse.getFromTag() != null && !sipResponse.getFromTag().equals(fromTag)) {
            throw new SipException("From tag of request does not match response from tag");
        } else if (fromTag != null) {
            sipResponse.getFrom().setTag(fromTag);
        } else {
            if (sipStack.isLoggingEnabled())
                sipStack.getStackLogger().logDebug("WARNING -- Null From tag in request!!");
        }
        // or if the state of the dialog needs to be changed.
        if (dialog != null && response.getStatusCode() != 100) {
            dialog.setResponseTags(sipResponse);
            DialogState oldState = dialog.getState();
            dialog.setLastResponse(this, (SIPResponse) response);
            if (oldState == null && dialog.getState() == DialogState.TERMINATED) {
                DialogTerminatedEvent event = new DialogTerminatedEvent(dialog.getSipProvider(), dialog);
                // Provide notification to the listener that the dialog has
                // ended.
                dialog.getSipProvider().handleEvent(event, this);
            }
        } else if (dialog == null && this.getMethod().equals(Request.INVITE) && this.retransmissionAlertEnabled && this.retransmissionAlertTimerTask == null && response.getStatusCode() / 100 == 2) {
            String dialogId = ((SIPResponse) response).getDialogId(true);
            this.retransmissionAlertTimerTask = new RetransmissionAlertTimerTask(dialogId);
            sipStack.retransmissionAlertTransactions.put(dialogId, this);
            sipStack.getTimer().schedule(this.retransmissionAlertTimerTask, 0, SIPTransactionStack.BASE_TIMER_INTERVAL);
        }
        // Send message after possibly inserting the Dialog
        // into the dialog table to avoid a possible race condition.
        this.sendMessage((SIPResponse) response);
        if (dialog != null) {
            dialog.startRetransmitTimer(this, (SIPResponse) response);
        }
    } catch (IOException ex) {
        if (sipStack.isLoggingEnabled())
            sipStack.getStackLogger().logException(ex);
        this.setState(TransactionState.TERMINATED);
        raiseErrorEvent(SIPTransactionErrorEvent.TRANSPORT_ERROR);
        throw new SipException(ex.getMessage());
    } catch (java.text.ParseException ex1) {
        if (sipStack.isLoggingEnabled())
            sipStack.getStackLogger().logException(ex1);
        this.setState(TransactionState.TERMINATED);
        throw new SipException(ex1.getMessage());
    }
}