public Session getMailSession()

in src/main/java/org/apache/commons/mail/Email.java [635:704]
56 lines of code
16 McCabe index (conditional complexity)

    public Session getMailSession() throws EmailException
    {
        if (this.session == null)
        {
            final Properties properties = new Properties(System.getProperties());
            properties.setProperty(EmailConstants.MAIL_TRANSPORT_PROTOCOL, EmailConstants.SMTP);

            if (EmailUtils.isEmpty(this.hostName))
            {
                this.hostName = properties.getProperty(EmailConstants.MAIL_HOST);
            }

            if (EmailUtils.isEmpty(this.hostName))
            {
                throw new EmailException("Cannot find valid hostname for mail session");
            }

            properties.setProperty(EmailConstants.MAIL_PORT, this.smtpPort);
            properties.setProperty(EmailConstants.MAIL_HOST, this.hostName);
            properties.setProperty(EmailConstants.MAIL_DEBUG, String.valueOf(this.debug));

            properties.setProperty(EmailConstants.MAIL_TRANSPORT_STARTTLS_ENABLE,
                    isStartTLSEnabled() ? "true" : "false");
            properties.setProperty(EmailConstants.MAIL_TRANSPORT_STARTTLS_REQUIRED,
                    isStartTLSRequired() ? "true" : "false");

            properties.setProperty(EmailConstants.MAIL_SMTP_SEND_PARTIAL,
                    isSendPartial() ? "true" : "false");
            properties.setProperty(EmailConstants.MAIL_SMTPS_SEND_PARTIAL,
                    isSendPartial() ? "true" : "false");

            if (this.authenticator != null)
            {
                properties.setProperty(EmailConstants.MAIL_SMTP_AUTH, "true");
            }

            if (isSSLOnConnect())
            {
                properties.setProperty(EmailConstants.MAIL_PORT, this.sslSmtpPort);
                properties.setProperty(EmailConstants.MAIL_SMTP_SOCKET_FACTORY_PORT, this.sslSmtpPort);
                properties.setProperty(EmailConstants.MAIL_SMTP_SOCKET_FACTORY_CLASS, "javax.net.ssl.SSLSocketFactory");
                properties.setProperty(EmailConstants.MAIL_SMTP_SOCKET_FACTORY_FALLBACK, "false");
            }

            if ((isSSLOnConnect() || isStartTLSEnabled()) && isSSLCheckServerIdentity())
            {
                properties.setProperty(EmailConstants.MAIL_SMTP_SSL_CHECKSERVERIDENTITY, "true");
            }

            if (this.bounceAddress != null)
            {
                properties.setProperty(EmailConstants.MAIL_SMTP_FROM, this.bounceAddress);
            }

            if (this.socketTimeout > 0)
            {
                properties.setProperty(EmailConstants.MAIL_SMTP_TIMEOUT, Integer.toString(this.socketTimeout));
            }

            if (this.socketConnectionTimeout > 0)
            {
                properties.setProperty(EmailConstants.MAIL_SMTP_CONNECTIONTIMEOUT, Integer.toString(this.socketConnectionTimeout));
            }

            // changed this (back) to getInstance due to security exceptions
            // caused when testing using maven
            this.session = Session.getInstance(properties, this.authenticator);
        }
        return this.session;
    }