Shuyi Chen | d7955ce | 2013-05-22 14:51:55 -0700 | [diff] [blame] | 1 | package org.jivesoftware.smackx; |
| 2 | |
| 3 | import java.util.HashMap; |
| 4 | import java.util.Iterator; |
| 5 | import java.util.List; |
| 6 | import java.util.Map; |
| 7 | |
| 8 | import org.jivesoftware.smack.Connection; |
| 9 | import org.jivesoftware.smack.PacketCollector; |
| 10 | import org.jivesoftware.smack.PacketListener; |
| 11 | import org.jivesoftware.smack.Roster; |
| 12 | import org.jivesoftware.smack.RosterEntry; |
| 13 | import org.jivesoftware.smack.SmackConfiguration; |
| 14 | import org.jivesoftware.smack.XMPPException; |
| 15 | import org.jivesoftware.smack.filter.PacketIDFilter; |
| 16 | import org.jivesoftware.smack.filter.PacketTypeFilter; |
| 17 | import org.jivesoftware.smack.packet.IQ; |
| 18 | import org.jivesoftware.smack.packet.Packet; |
| 19 | import org.jivesoftware.smack.packet.Presence; |
| 20 | import org.jivesoftware.smack.packet.Registration; |
| 21 | import org.jivesoftware.smack.util.StringUtils; |
| 22 | import org.jivesoftware.smackx.packet.DiscoverInfo; |
| 23 | import org.jivesoftware.smackx.packet.DiscoverInfo.Identity; |
| 24 | |
| 25 | /** |
| 26 | * This class provides an abstract view to gateways/transports. This class handles all |
| 27 | * actions regarding gateways and transports. |
| 28 | * @author Till Klocke |
| 29 | * |
| 30 | */ |
| 31 | public class Gateway { |
| 32 | |
| 33 | private Connection connection; |
| 34 | private ServiceDiscoveryManager sdManager; |
| 35 | private Roster roster; |
| 36 | private String entityJID; |
| 37 | private Registration registerInfo; |
| 38 | private Identity identity; |
| 39 | private DiscoverInfo info; |
| 40 | |
| 41 | Gateway(Connection connection, String entityJID){ |
| 42 | this.connection = connection; |
| 43 | this.roster = connection.getRoster(); |
| 44 | this.sdManager = ServiceDiscoveryManager.getInstanceFor(connection); |
| 45 | this.entityJID = entityJID; |
| 46 | } |
| 47 | |
| 48 | Gateway(Connection connection, String entityJID, DiscoverInfo info, Identity identity){ |
| 49 | this(connection, entityJID); |
| 50 | this.info = info; |
| 51 | this.identity = identity; |
| 52 | } |
| 53 | |
| 54 | private void discoverInfo() throws XMPPException{ |
| 55 | info = sdManager.discoverInfo(entityJID); |
| 56 | Iterator<Identity> iterator = info.getIdentities(); |
| 57 | while(iterator.hasNext()){ |
| 58 | Identity temp = iterator.next(); |
| 59 | if(temp.getCategory().equalsIgnoreCase("gateway")){ |
| 60 | this.identity = temp; |
| 61 | break; |
| 62 | } |
| 63 | } |
| 64 | } |
| 65 | |
| 66 | private Identity getIdentity() throws XMPPException{ |
| 67 | if(identity==null){ |
| 68 | discoverInfo(); |
| 69 | } |
| 70 | return identity; |
| 71 | } |
| 72 | |
| 73 | private Registration getRegisterInfo(){ |
| 74 | if(registerInfo==null){ |
| 75 | refreshRegisterInfo(); |
| 76 | } |
| 77 | return registerInfo; |
| 78 | } |
| 79 | |
| 80 | private void refreshRegisterInfo(){ |
| 81 | Registration packet = new Registration(); |
| 82 | packet.setFrom(connection.getUser()); |
| 83 | packet.setType(IQ.Type.GET); |
| 84 | packet.setTo(entityJID); |
| 85 | PacketCollector collector = |
| 86 | connection.createPacketCollector(new PacketIDFilter(packet.getPacketID())); |
| 87 | connection.sendPacket(packet); |
| 88 | Packet result = collector.nextResult(SmackConfiguration.getPacketReplyTimeout()); |
| 89 | collector.cancel(); |
| 90 | if(result instanceof Registration && result.getError()==null){ |
| 91 | Registration register = (Registration)result; |
| 92 | this.registerInfo = register; |
| 93 | } |
| 94 | } |
| 95 | |
| 96 | /** |
| 97 | * Checks if this gateway supports In-Band registration |
| 98 | * @return true if In-Band registration is supported |
| 99 | * @throws XMPPException |
| 100 | */ |
| 101 | public boolean canRegister() throws XMPPException{ |
| 102 | if(info==null){ |
| 103 | discoverInfo(); |
| 104 | } |
| 105 | return info.containsFeature("jabber:iq:register"); |
| 106 | } |
| 107 | |
| 108 | /** |
| 109 | * Returns all fields that are required to register to this gateway |
| 110 | * @return a list of required fields |
| 111 | */ |
| 112 | public List<String> getRequiredFields(){ |
| 113 | return getRegisterInfo().getRequiredFields(); |
| 114 | } |
| 115 | |
| 116 | /** |
| 117 | * Returns the name as proposed in this gateways identity discovered via service |
| 118 | * discovery |
| 119 | * @return a String of its name |
| 120 | * @throws XMPPException |
| 121 | */ |
| 122 | public String getName() throws XMPPException{ |
| 123 | if(identity==null){ |
| 124 | discoverInfo(); |
| 125 | } |
| 126 | return identity.getName(); |
| 127 | } |
| 128 | |
| 129 | /** |
| 130 | * Returns the type as proposed in this gateways identity discovered via service |
| 131 | * discovery. See {@link http://xmpp.org/registrar/disco-categories.html} for |
| 132 | * possible types |
| 133 | * @return a String describing the type |
| 134 | * @throws XMPPException |
| 135 | */ |
| 136 | public String getType() throws XMPPException{ |
| 137 | if(identity==null){ |
| 138 | discoverInfo(); |
| 139 | } |
| 140 | return identity.getType(); |
| 141 | } |
| 142 | |
| 143 | /** |
| 144 | * Returns true if the registration informations indicates that you are already |
| 145 | * registered with this gateway |
| 146 | * @return true if already registered |
| 147 | * @throws XMPPException |
| 148 | */ |
| 149 | public boolean isRegistered() throws XMPPException{ |
| 150 | return getRegisterInfo().isRegistered(); |
| 151 | } |
| 152 | |
| 153 | /** |
| 154 | * Returns the value of specific field of the registration information. Can be used |
| 155 | * to retrieve for example to retrieve username/password used on an already registered |
| 156 | * gateway. |
| 157 | * @param fieldName name of the field |
| 158 | * @return a String containing the value of the field or null |
| 159 | */ |
| 160 | public String getField(String fieldName){ |
| 161 | return getRegisterInfo().getField(fieldName); |
| 162 | } |
| 163 | |
| 164 | /** |
| 165 | * Returns a List of Strings of all field names which contain values. |
| 166 | * @return a List of field names |
| 167 | */ |
| 168 | public List<String> getFieldNames(){ |
| 169 | return getRegisterInfo().getFieldNames(); |
| 170 | } |
| 171 | |
| 172 | /** |
| 173 | * A convenience method for retrieving the username of an existing account |
| 174 | * @return String describing the username |
| 175 | */ |
| 176 | public String getUsername(){ |
| 177 | return getField("username"); |
| 178 | } |
| 179 | |
| 180 | /** |
| 181 | * A convenience method for retrieving the password of an existing accoung |
| 182 | * @return String describing the password |
| 183 | */ |
| 184 | public String getPassword(){ |
| 185 | return getField("password"); |
| 186 | } |
| 187 | |
| 188 | /** |
| 189 | * Returns instructions for registering with this gateway |
| 190 | * @return String containing instructions |
| 191 | */ |
| 192 | public String getInstructions(){ |
| 193 | return getRegisterInfo().getInstructions(); |
| 194 | } |
| 195 | |
| 196 | /** |
| 197 | * With this method you can register with this gateway or modify an existing registration |
| 198 | * @param username String describing the username |
| 199 | * @param password String describing the password |
| 200 | * @param fields additional fields like email. |
| 201 | * @throws XMPPException |
| 202 | */ |
| 203 | public void register(String username, String password, Map<String,String> fields)throws XMPPException{ |
| 204 | if(getRegisterInfo().isRegistered()) { |
| 205 | throw new IllegalStateException("You are already registered with this gateway"); |
| 206 | } |
| 207 | Registration register = new Registration(); |
| 208 | register.setFrom(connection.getUser()); |
| 209 | register.setTo(entityJID); |
| 210 | register.setType(IQ.Type.SET); |
| 211 | register.setUsername(username); |
| 212 | register.setPassword(password); |
| 213 | for(String s : fields.keySet()){ |
| 214 | register.addAttribute(s, fields.get(s)); |
| 215 | } |
| 216 | PacketCollector resultCollector = |
| 217 | connection.createPacketCollector(new PacketIDFilter(register.getPacketID())); |
| 218 | connection.sendPacket(register); |
| 219 | Packet result = |
| 220 | resultCollector.nextResult(SmackConfiguration.getPacketReplyTimeout()); |
| 221 | resultCollector.cancel(); |
| 222 | if(result!=null && result instanceof IQ){ |
| 223 | IQ resultIQ = (IQ)result; |
| 224 | if(resultIQ.getError()!=null){ |
| 225 | throw new XMPPException(resultIQ.getError()); |
| 226 | } |
| 227 | if(resultIQ.getType()==IQ.Type.ERROR){ |
| 228 | throw new XMPPException(resultIQ.getError()); |
| 229 | } |
| 230 | connection.addPacketListener(new GatewayPresenceListener(), |
| 231 | new PacketTypeFilter(Presence.class)); |
| 232 | roster.createEntry(entityJID, getIdentity().getName(), new String[]{}); |
| 233 | } |
| 234 | else{ |
| 235 | throw new XMPPException("Packet reply timeout"); |
| 236 | } |
| 237 | } |
| 238 | |
| 239 | /** |
| 240 | * A convenience method for registering or modifying an account on this gateway without |
| 241 | * additional fields |
| 242 | * @param username String describing the username |
| 243 | * @param password String describing the password |
| 244 | * @throws XMPPException |
| 245 | */ |
| 246 | public void register(String username, String password) throws XMPPException{ |
| 247 | register(username, password,new HashMap<String,String>()); |
| 248 | } |
| 249 | |
| 250 | /** |
| 251 | * This method removes an existing registration from this gateway |
| 252 | * @throws XMPPException |
| 253 | */ |
| 254 | public void unregister() throws XMPPException{ |
| 255 | Registration register = new Registration(); |
| 256 | register.setFrom(connection.getUser()); |
| 257 | register.setTo(entityJID); |
| 258 | register.setType(IQ.Type.SET); |
| 259 | register.setRemove(true); |
| 260 | PacketCollector resultCollector = |
| 261 | connection.createPacketCollector(new PacketIDFilter(register.getPacketID())); |
| 262 | connection.sendPacket(register); |
| 263 | Packet result = resultCollector.nextResult(SmackConfiguration.getPacketReplyTimeout()); |
| 264 | resultCollector.cancel(); |
| 265 | if(result!=null && result instanceof IQ){ |
| 266 | IQ resultIQ = (IQ)result; |
| 267 | if(resultIQ.getError()!=null){ |
| 268 | throw new XMPPException(resultIQ.getError()); |
| 269 | } |
| 270 | if(resultIQ.getType()==IQ.Type.ERROR){ |
| 271 | throw new XMPPException(resultIQ.getError()); |
| 272 | } |
| 273 | RosterEntry gatewayEntry = roster.getEntry(entityJID); |
| 274 | roster.removeEntry(gatewayEntry); |
| 275 | } |
| 276 | else{ |
| 277 | throw new XMPPException("Packet reply timeout"); |
| 278 | } |
| 279 | } |
| 280 | |
| 281 | /** |
| 282 | * Lets you login manually in this gateway. Normally a gateway logins you when it |
| 283 | * receives the first presence broadcasted by your server. But it is possible to |
| 284 | * manually login and logout by sending a directed presence. This method sends an |
| 285 | * empty available presence direct to the gateway. |
| 286 | */ |
| 287 | public void login(){ |
| 288 | Presence presence = new Presence(Presence.Type.available); |
| 289 | login(presence); |
| 290 | } |
| 291 | |
| 292 | /** |
| 293 | * This method lets you send the presence direct to the gateway. Type, To and From |
| 294 | * are modified. |
| 295 | * @param presence the presence used to login to gateway |
| 296 | */ |
| 297 | public void login(Presence presence){ |
| 298 | presence.setType(Presence.Type.available); |
| 299 | presence.setTo(entityJID); |
| 300 | presence.setFrom(connection.getUser()); |
| 301 | connection.sendPacket(presence); |
| 302 | } |
| 303 | |
| 304 | /** |
| 305 | * This method logs you out from this gateway by sending an unavailable presence |
| 306 | * to directly to this gateway. |
| 307 | */ |
| 308 | public void logout(){ |
| 309 | Presence presence = new Presence(Presence.Type.unavailable); |
| 310 | presence.setTo(entityJID); |
| 311 | presence.setFrom(connection.getUser()); |
| 312 | connection.sendPacket(presence); |
| 313 | } |
| 314 | |
| 315 | private class GatewayPresenceListener implements PacketListener{ |
| 316 | |
| 317 | public void processPacket(Packet packet) { |
| 318 | if(packet instanceof Presence){ |
| 319 | Presence presence = (Presence)packet; |
| 320 | if(entityJID.equals(presence.getFrom()) && |
| 321 | roster.contains(presence.getFrom()) && |
| 322 | presence.getType().equals(Presence.Type.subscribe)){ |
| 323 | Presence response = new Presence(Presence.Type.subscribed); |
| 324 | response.setTo(presence.getFrom()); |
| 325 | response.setFrom(StringUtils.parseBareAddress(connection.getUser())); |
| 326 | connection.sendPacket(response); |
| 327 | } |
| 328 | } |
| 329 | |
| 330 | } |
| 331 | } |
| 332 | |
| 333 | } |