Java tutorial
/* * * Copyright 2007-2012 Audrius Valunas * * This file is part of OpenACS. * OpenACS is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * OpenACS is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with OpenACS. If not, see <http://www.gnu.org/licenses/>. * */ package vn.vnpttech.ssdc.nms.mediation.stbacs; import java.net.DatagramPacket; import java.net.DatagramSocket; import java.net.InetAddress; import java.net.InetSocketAddress; import java.net.URL; import java.net.URLConnection; import java.sql.Timestamp; import java.util.Calendar; import java.util.Collection; import java.util.Random; import javax.crypto.Mac; import javax.crypto.spec.SecretKeySpec; import javax.ejb.*; import vn.vnpttech.ssdc.nms.mediation.stbacs.utils.cvtHex; import org.apache.commons.httpclient.HttpClient; import org.apache.commons.httpclient.UsernamePasswordCredentials; import org.apache.commons.httpclient.auth.AuthScope; import org.apache.commons.httpclient.methods.GetMethod; public abstract class HostsBean implements EntityBean, HostsLocalBusiness { private EntityContext context; // <editor-fold defaultstate="collapsed" desc="EJB infrastructure methods. Click on the + sign on the left to edit the code."> // TODO Consider creating Transfer Object to encapsulate data // TODO Review finder methods /** * @see javax.ejb.EntityBean#setEntityContext(javax.ejb.EntityContext) */ public void setEntityContext(EntityContext aContext) { context = aContext; } /** * @see javax.ejb.EntityBean#ejbActivate() */ public void ejbActivate() { } /** * @see javax.ejb.EntityBean#ejbPassivate() */ public void ejbPassivate() { } /** * @see javax.ejb.EntityBean#ejbRemove() */ public void ejbRemove() { } /** * @see javax.ejb.EntityBean#unsetEntityContext() */ public void unsetEntityContext() { context = null; } /** * @see javax.ejb.EntityBean#ejbLoad() */ public void ejbLoad() { } /** * @see javax.ejb.EntityBean#ejbStore() */ public void ejbStore() { } // </editor-fold> public abstract String getSerialno(); public abstract void setSerialno(String serialno); public abstract String getUrl(); public abstract void setUrl(String url); public abstract String getConfigname(); public abstract void setConfigname(String configname); public abstract String getCurrentsoftware(); public abstract void setCurrentsoftware(String currentsoftware); public abstract Timestamp getSfwupdtime(); public abstract void setSfwupdtime(Timestamp sfwupdtime); public abstract String getSfwupdres(); public abstract void setSfwupdres(String sfwupdres); public abstract String getCfgupdres(); public abstract void setCfgupdres(String cfgupdres); public abstract Timestamp getLastcontact(); public abstract void setLastcontact(Timestamp lastcontact); public abstract Timestamp getCfgupdtime(); public abstract void setCfgupdtime(Timestamp cfgupdtime); public abstract java.lang.String getHardware(); public abstract void setHardware(java.lang.String hardware); public abstract java.lang.String getCfgversion(); public abstract void setCfgversion(java.lang.String cfgversion); public abstract Object getId(); public abstract void setId(Object id); public java.lang.Object ejbCreate(Integer hwid, String serialno, String url) throws CreateException { /* if (oui == null) { throw new CreateException("The field \"oui\" must not be null"); } if (serialno == null) { throw new CreateException("The field \"serialno\" must not be null"); } if (url == null) { throw new CreateException("The field \"url\" must not be null"); } */ // TODO add additional validation code, throw CreateException if data is not valid setHwid(hwid); setSerialno(serialno); setUrl(url); Timestamp never = new Timestamp(24 * 3600 * 1000); setCfgupdtime(never); setSfwupdtime(never); setLastcontact(never); setReboot(false); return null; } public void ejbPostCreate(Integer hwid, String serialno, String url) { // TODO populate relationships here if appropriate } public abstract byte[] getProps(); public abstract void setProps(byte[] props); public abstract Integer getHwid(); public abstract void setHwid(Integer hwid); public abstract String getUsername(); public abstract void setUsername(String username); public abstract String getPassword(); public abstract void setPassword(String password); public abstract Integer getAuthtype(); public abstract void setAuthtype(Integer authtype); public abstract HardwareModelLocal getModel(); public abstract void setModel(HardwareModelLocal m); public abstract String getCustomerid(); public abstract void setCustomerid(String customerid); public abstract String getConrequser(); public abstract void setConrequser(String conrequser); public abstract String getConreqpass(); public abstract void setConreqpass(String conerqpass); /* public void RequestConnection (int timeout) throws Exception { String url = getUrl(); String user = getConrequser(); String pass = getConreqpass(); if (user != null && pass != null) { url = url.substring(0, 7) + user +":" + pass + "@" + url.substring(7); } try { // URL url = new URL((user!=null && pass != null) ? cpeurl); URL u = new URL(url); URLConnection httpconn = u.openConnection(); httpconn.setReadTimeout(timeout); httpconn.setConnectTimeout(timeout); httpconn.setUseCaches(false); httpconn.getContent(); } catch (Exception ex) { if (!ex.getMessage().equals("no content-type")) throw ex; return; } } */ private static final String HMAC_SHA1_ALGORITHM = "HmacSHA1"; public void RequestConnectionUDP(String url, String user, String pass) throws Exception { DatagramSocket s = new DatagramSocket(null); s.setReuseAddress(true); s.bind(new InetSocketAddress(Application.getSTUNport())); String ts = Long.toString(Calendar.getInstance().getTimeInMillis()); String id = ts; Random rnd = new Random(); byte[] nonceArray = new byte[16]; rnd.nextBytes(nonceArray); String cn = cvtHex.cvtHex(nonceArray); url = url.substring(6); String[] u = url.split(":"); SecretKeySpec signingKey = new SecretKeySpec(pass.getBytes(), HMAC_SHA1_ALGORITHM); Mac mac = Mac.getInstance(HMAC_SHA1_ALGORITHM); mac.init(signingKey); String data = ts + id + user + cn; byte[] rawHmac = mac.doFinal(data.getBytes()); String signature = cvtHex.cvtHex(rawHmac); String req = "GET http://" + url + "?ts=" + ts + "&id=" + id + "&un=" + user + "&cn=" + cn + "&sig=" + signature + " HTTP/1.1\r\n\r\n"; byte[] breq = req.getBytes(); DatagramPacket packet = new DatagramPacket(breq, breq.length); packet.setAddress(InetAddress.getByName(u[0])); packet.setPort(Integer.parseInt(u[1])); s.send(packet); } public void RequestConnectionHttp(String url, String user, String pass) throws Exception { HttpClient client = new HttpClient(); if (user != null && pass != null) { client.getState().setCredentials(AuthScope.ANY, new UsernamePasswordCredentials(user, pass)); } GetMethod get = new GetMethod(url); get.setDoAuthentication(true); try { int status = client.executeMethod(get); if (status != 200) { System.out.println(status + "\n" + get.getResponseBodyAsString()); throw new Exception("Failed: status=" + status); } } catch (Exception e) { throw e; } finally { get.releaseConnection(); } } public void RequestConnection(int timeout) throws Exception { String url = getUrl(); String user = getConrequser(); String pass = getConreqpass(); if (url.startsWith("udp://")) { RequestConnectionUDP(url, user, pass); } else { RequestConnectionHttp(url, user, pass); } } public abstract Boolean getCfgforce(); public abstract void setCfgforce(Boolean cfgforce); public abstract String getProfileName(); public abstract void setProfileName(String profileName); public abstract Collection<HostPropertyLocal> getProperties(); public abstract void setProperties(Collection<HostPropertyLocal> properties); public abstract DeviceProfileLocal getProfile(); public abstract void setProfile(DeviceProfileLocal profile); public abstract Collection<Host2ServiceLocal> getServices(); public abstract void setServices(Collection<Host2ServiceLocal> svcs); public abstract Boolean getForcePasswords(); public abstract void setForcePasswords(Boolean forcePasswords); public abstract Boolean getReboot(); public abstract void setReboot(Boolean reboot); }