Examples with SIPClientTransaction gov.nist.javax.sip.stack.SIPClientTransaction used on opensource projects

Example 6 with SIPClientTransaction

use of gov.nist.javax.sip.stack.SIPClientTransaction 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 7 with SIPClientTransaction

use of gov.nist.javax.sip.stack.SIPClientTransaction in project XobotOS by xamarin.

the class SipProviderImpl method getNewServerTransaction.

/*
     * (non-Javadoc)
     *
     * @see javax.sip.SipProvider#getNewServerTransaction(javax.sip.message.Request)
     */
public ServerTransaction getNewServerTransaction(Request request) throws TransactionAlreadyExistsException, TransactionUnavailableException {
    if (!sipStack.isAlive())
        throw new TransactionUnavailableException("Stack is stopped");
    SIPServerTransaction transaction = null;
    SIPRequest sipRequest = (SIPRequest) request;
    try {
        sipRequest.checkHeaders();
    } catch (ParseException ex) {
        throw new TransactionUnavailableException(ex.getMessage(), ex);
    }
    if (request.getMethod().equals(Request.ACK)) {
        if (sipStack.isLoggingEnabled())
            sipStack.getStackLogger().logError("Creating server transaction for ACK -- makes no sense!");
        throw new TransactionUnavailableException("Cannot create Server transaction for ACK ");
    }
    /*
         * Got a notify.
         */
    if (sipRequest.getMethod().equals(Request.NOTIFY) && sipRequest.getFromTag() != null && sipRequest.getToTag() == null) {
        SIPClientTransaction ct = sipStack.findSubscribeTransaction(sipRequest, (ListeningPointImpl) this.getListeningPoint());
        /* Issue 104 */
        if (ct == null && !sipStack.deliverUnsolicitedNotify) {
            throw new TransactionUnavailableException("Cannot find matching Subscription (and gov.nist.javax.sip.DELIVER_UNSOLICITED_NOTIFY not set)");
        }
    }
    if (!sipStack.acquireSem()) {
        throw new TransactionUnavailableException("Transaction not available -- could not acquire stack lock");
    }
    try {
        if (sipStack.isDialogCreated(sipRequest.getMethod())) {
            if (sipStack.findTransaction((SIPRequest) request, true) != null)
                throw new TransactionAlreadyExistsException("server transaction already exists!");
            transaction = (SIPServerTransaction) ((SIPRequest) request).getTransaction();
            if (transaction == null)
                throw new TransactionUnavailableException("Transaction not available");
            if (transaction.getOriginalRequest() == null)
                transaction.setOriginalRequest(sipRequest);
            try {
                sipStack.addTransaction(transaction);
            } catch (IOException ex) {
                throw new TransactionUnavailableException("Error sending provisional response");
            }
            // So I can handle timeouts.
            transaction.addEventListener(this);
            if (isAutomaticDialogSupportEnabled()) {
                // If automatic dialog support is enabled then
                // this tx gets his own dialog.
                String dialogId = sipRequest.getDialogId(true);
                SIPDialog dialog = sipStack.getDialog(dialogId);
                if (dialog == null) {
                    dialog = sipStack.createDialog(transaction);
                }
                transaction.setDialog(dialog, sipRequest.getDialogId(true));
                if (sipRequest.getMethod().equals(Request.INVITE) && this.isDialogErrorsAutomaticallyHandled()) {
                    sipStack.putInMergeTable(transaction, sipRequest);
                }
                dialog.addRoute(sipRequest);
                if (dialog.getRemoteTag() != null && dialog.getLocalTag() != null) {
                    this.sipStack.putDialog(dialog);
                }
            }
        } else {
            if (isAutomaticDialogSupportEnabled()) {
                /*
                     * Under automatic dialog support, dialog is tied into a transaction. You cannot
                     * create a server tx except for dialog creating transactions. After that, all
                     * subsequent transactions are created for you by the stack.
                     */
                transaction = (SIPServerTransaction) sipStack.findTransaction((SIPRequest) request, true);
                if (transaction != null)
                    throw new TransactionAlreadyExistsException("Transaction exists! ");
                transaction = (SIPServerTransaction) ((SIPRequest) request).getTransaction();
                if (transaction == null)
                    throw new TransactionUnavailableException("Transaction not available!");
                if (transaction.getOriginalRequest() == null)
                    transaction.setOriginalRequest(sipRequest);
                // Map the transaction.
                try {
                    sipStack.addTransaction(transaction);
                } catch (IOException ex) {
                    throw new TransactionUnavailableException("Could not send back provisional response!");
                }
                // If there is a dialog already assigned then just update the
                // dialog state.
                String dialogId = sipRequest.getDialogId(true);
                SIPDialog dialog = sipStack.getDialog(dialogId);
                if (dialog != null) {
                    dialog.addTransaction(transaction);
                    dialog.addRoute(sipRequest);
                    transaction.setDialog(dialog, sipRequest.getDialogId(true));
                }
            } else {
                transaction = (SIPServerTransaction) sipStack.findTransaction((SIPRequest) request, true);
                if (transaction != null)
                    throw new TransactionAlreadyExistsException("Transaction exists! ");
                transaction = (SIPServerTransaction) ((SIPRequest) request).getTransaction();
                if (transaction != null) {
                    if (transaction.getOriginalRequest() == null)
                        transaction.setOriginalRequest(sipRequest);
                    // Map the transaction.
                    sipStack.mapTransaction(transaction);
                    // If there is a dialog already assigned then just
                    // assign the dialog to the transaction.
                    String dialogId = sipRequest.getDialogId(true);
                    SIPDialog dialog = sipStack.getDialog(dialogId);
                    if (dialog != null) {
                        dialog.addTransaction(transaction);
                        dialog.addRoute(sipRequest);
                        transaction.setDialog(dialog, sipRequest.getDialogId(true));
                    }
                    return transaction;
                } else {
                    // tx does not exist so create the tx.
                    MessageChannel mc = (MessageChannel) sipRequest.getMessageChannel();
                    transaction = sipStack.createServerTransaction(mc);
                    if (transaction == null)
                        throw new TransactionUnavailableException("Transaction unavailable -- too many servrer transactions");
                    transaction.setOriginalRequest(sipRequest);
                    sipStack.mapTransaction(transaction);
                    // If there is a dialog already assigned then just
                    // assign the dialog to the transaction.
                    String dialogId = sipRequest.getDialogId(true);
                    SIPDialog dialog = sipStack.getDialog(dialogId);
                    if (dialog != null) {
                        dialog.addTransaction(transaction);
                        dialog.addRoute(sipRequest);
                        transaction.setDialog(dialog, sipRequest.getDialogId(true));
                    }
                    return transaction;
                }
            }
        }
        return transaction;
    } finally {
        sipStack.releaseSem();
    }
}

Example 8 with SIPClientTransaction

use of gov.nist.javax.sip.stack.SIPClientTransaction in project XobotOS by xamarin.

the class SipProviderImpl method transactionErrorEvent.

/**
     * Invoked when an error has ocurred with a transaction. Propagate up to the
     * listeners.
     *
     * @param transactionErrorEvent
     *            Error event.
     */
public void transactionErrorEvent(SIPTransactionErrorEvent transactionErrorEvent) {
    SIPTransaction transaction = (SIPTransaction) transactionErrorEvent.getSource();
    if (transactionErrorEvent.getErrorID() == SIPTransactionErrorEvent.TRANSPORT_ERROR) {
        // There must be a way to inform the TU here!!
        if (sipStack.isLoggingEnabled()) {
            sipStack.getStackLogger().logDebug("TransportError occured on " + transaction);
        }
        // Treat this like a timeout event. (Suggestion from Christophe).
        Object errorObject = transactionErrorEvent.getSource();
        Timeout timeout = Timeout.TRANSACTION;
        TimeoutEvent ev = null;
        if (errorObject instanceof SIPServerTransaction) {
            ev = new TimeoutEvent(this, (ServerTransaction) errorObject, timeout);
        } else {
            SIPClientTransaction clientTx = (SIPClientTransaction) errorObject;
            Hop hop = clientTx.getNextHop();
            if (sipStack.getRouter() instanceof RouterExt) {
                ((RouterExt) sipStack.getRouter()).transactionTimeout(hop);
            }
            ev = new TimeoutEvent(this, (ClientTransaction) errorObject, timeout);
        }
        // Handling transport error like timeout
        this.handleEvent(ev, (SIPTransaction) errorObject);
    } else if (transactionErrorEvent.getErrorID() == SIPTransactionErrorEvent.TIMEOUT_ERROR) {
        // This is a timeout event.
        Object errorObject = transactionErrorEvent.getSource();
        Timeout timeout = Timeout.TRANSACTION;
        TimeoutEvent ev = null;
        if (errorObject instanceof SIPServerTransaction) {
            ev = new TimeoutEvent(this, (ServerTransaction) errorObject, timeout);
        } else {
            SIPClientTransaction clientTx = (SIPClientTransaction) errorObject;
            Hop hop = clientTx.getNextHop();
            if (sipStack.getRouter() instanceof RouterExt) {
                ((RouterExt) sipStack.getRouter()).transactionTimeout(hop);
            }
            ev = new TimeoutEvent(this, (ClientTransaction) errorObject, timeout);
        }
        this.handleEvent(ev, (SIPTransaction) errorObject);
    } else if (transactionErrorEvent.getErrorID() == SIPTransactionErrorEvent.TIMEOUT_RETRANSMIT) {
        // This is a timeout retransmit event.
        // We should never get this if retransmit filter is
        // enabled (ie. in that case the stack should handle.
        // all retransmits.
        Object errorObject = transactionErrorEvent.getSource();
        Transaction tx = (Transaction) errorObject;
        if (tx.getDialog() != null)
            InternalErrorHandler.handleException("Unexpected event !", this.sipStack.getStackLogger());
        Timeout timeout = Timeout.RETRANSMIT;
        TimeoutEvent ev = null;
        if (errorObject instanceof SIPServerTransaction) {
            ev = new TimeoutEvent(this, (ServerTransaction) errorObject, timeout);
        } else {
            ev = new TimeoutEvent(this, (ClientTransaction) errorObject, timeout);
        }
        this.handleEvent(ev, (SIPTransaction) errorObject);
    }
}