public boolean login()

in core/servicemix-core/src/main/java/org/apache/servicemix/jbi/security/login/CertificatesLoginModule.java [86:149]
62 lines of code
13 McCabe index (conditional complexity)

    public boolean login() throws LoginException {
        File f = new File(baseDir, usersFile);
        InputStream fis = null;
        try {
            fis = new java.io.FileInputStream(f);
            users.load(fis);
        } catch (IOException ioe) {
            throw new LoginException("Unable to load user properties file " + f);
        } finally {
            if (fis != null) {
                try {
                    fis.close();
                    fis = null;
                } catch (IOException e) {
                    throw new LoginException("Unable to close user properties file " + f);
                }
            }
        }
        f = new File(baseDir, groupsFile);
        try {
            fis = new java.io.FileInputStream(f);
            groups.load(fis);
        } catch (IOException ioe) {
            throw new LoginException("Unable to load group properties file " + f);
        } finally {
            if (fis != null) {
                try {
                    fis.close();
                    fis = null;
                } catch (IOException e) {
                    throw new LoginException("Unable to close group properties file " + f);
                }
            }
        }

        Callback[] callbacks = new Callback[1];
        callbacks[0] = new CertificateCallback();
        try {
            callbackHandler.handle(callbacks);
        } catch (IOException ioe) {
            throw new LoginException(ioe.getMessage());
        } catch (UnsupportedCallbackException uce) {
            throw new LoginException(uce.getMessage() + " not available to obtain information from user");
        }
        X509Certificate cert = ((CertificateCallback) callbacks[0]).getCertificate();
        if (cert == null) {
            throw new FailedLoginException("Unable to retrieve certificate");
        }

        Principal principal = cert.getSubjectX500Principal();
        String certName = principal.getName(); 
        for (Iterator it = users.entrySet().iterator(); it.hasNext();) {
            Map.Entry entry = (Map.Entry) it.next();
            if (certName.equals(entry.getValue())) {
                user = (String) entry.getKey();
                principals.add(principal);
                if (debug) {
                    LOGGER.debug("login {}", user);
                }
                return true;
            }
        }
        throw new FailedLoginException();
    }