public void readConfig() throws Exception {
// debugging aspect
if (ds().getProperty("debug", "false").equalsIgnoreCase("true")) {
LOG.debug_on();
LOG.info("working directory = " + System.getProperty("user.dir"));
}
Iterator<String> it = ds().iterator();
while (it.hasNext()) {
String key = it.next();
String value = ds().getProperty(key);
LOG.info(key + "=" + value);
}
name = ds().getProperty("name", "anonymous");
// each agent has its own symmetric key cipher
// TODO: test with other algo than AES
KeyGenerator keyGen = KeyGenerator.getInstance(this.ds().getProperty("cypher.algo", "AES"));
keyGen.init(Integer.parseInt(this.ds().getProperty("cipher.keysize", "128")));
secretKey = keyGen.generateKey();
cipher = Cipher.getInstance(this.ds().getProperty("cipher.algo", "AES"));
// user cipher
byte[] salt = {1, 1, 1, 2, 2, 2, 3, 3};
int count = 20;
userParamSpec = new PBEParameterSpec(salt, count);
}
public void createUser(
String login, String password, int backupNbr, Captcha captcha, String answer)
throws Exception {
LOG.info("creating user: "******", " + password + ", " + backupNbr + ", answer=" + answer);
LOG.info("captcha=" + captcha);
OCPUser user = new OCPUser(this, login, backupNbr);
UserPublicInfo upi = user.getPublicInfo(this);
ContactMap contactMap = ds().getComponent(ContactMap.class);
Contact contact = contactMap.getContact(captcha.contactId);
// 1) create the public part of the user.
// catpcha is required in order to avoid massive fake user creation
Data publicUserData = new Data(this, user, ds().serializer.serialize(upi));
Link publicUserDataLink =
new Link(user, this, UserPublicInfo.getKey(this, login), publicUserData.getKey(this));
getClient().createUser(contact, publicUserData, publicUserDataLink, captcha, answer);
// 2) create the private part of the user.
// no need captcha because creation of object is checked by the user
// public info
Key key = new Key(hash(ucrypt(password, (login + password).getBytes())));
byte[] content = ucrypt(password, ds().serializer.serialize(user));
Content privateUserData = new Data(this, user, content);
Link privateUserDataLink = new Link(user, this, key, privateUserData.getKey(this));
setWithLink(user, privateUserData, privateUserDataLink);
}
public Captcha wantToCreateUser(String login, String password) throws Exception {
// TODO check if user already exists ?
LOG.info("want to create a user");
Id key = hash(ucrypt(password, (login + password).getBytes()));
LOG.info("key = " + key);
Queue<Contact> contactQueue = makeContactQueue(key);
LOG.info("contact queue established.");
return getClient().askCaptcha(contactQueue);
}
public boolean isResponsible(Address address) throws Exception {
LOG.info("address = " + address);
Id nodeId = getNodeId(address);
LOG.info("nodeId = " + nodeId);
OCPContact contact = getContactFromNodeId(nodeId);
LOG.info("contact = " + contact);
LOG.info("is responsible: " + contact.getName().equals(id.toString()));
return contact.getName().equals(id.toString());
// return true;
}
public void addContact(Contact contact) throws Exception {
LOG.info("adding contact: " + contact);
ds().contactMap.add(contact);
OCPContact c = (OCPContact) contact;
if (c.nodeIdSet.size() == 0) {
throw new Exception("contact without node.");
}
Iterator<Id> it = c.nodeIdSet.iterator();
while (it.hasNext()) {
Id id = it.next();
LOG.info("adding node to nodeMap");
nodeMap.put(id, c);
}
}
@Override
public void stop() {
LOG.info("stopping http server");
if (usesComponent(NATTraversal.class)) {
getComponent(NATTraversal.class).unmap();
}
httpServer.stop(t);
}
public void connect() throws Exception {
String sId = ds().getProperty("id");
if (sId == null) {
id = generateId();
ds().setProperty("id", id.toString());
} else {
id = new Id(sId);
}
LOG.info("agent id = " + id);
try {
backupNbr = (byte) Integer.parseInt(ds().network.getProperty("backupNbr", "5"));
} catch (NumberFormatException e) {
throw new Exception(
"network property error: backupNbr must be an integer between 1 and 255.");
}
if (backupNbr < 1) {
throw new Exception(
"network property error: backupNbr must be an integer between 1 and 255.");
}
// message digest for hash
md = MessageDigest.getInstance(ds().network.getProperty("hash", "SHA-1"));
// all agent must have a PKI
keyPair = generateKeyPair();
signatureAlgorithm = ds().network.getProperty("SignatureAlgo", "SHA1withDSA");
// all users use the same algo for symmetric encryption
userSecretKeyFactory =
SecretKeyFactory.getInstance(
ds().network.getProperty("user.cipher.algo", "PBEWithMD5AndDES"));
userCipher =
Cipher.getInstance(ds().network.getProperty("user.cipher.algo", "PBEWithMD5AndDES"));
if (ds().getProperty("server", "yes").equals("yes")) {
storage = new Storage(ds());
storage.attach();
}
LOG.info("end");
}
@Override
public synchronized void rm(String existingParentDir, String name) throws Exception {
LOG.info("existingParentDir = " + existingParentDir);
String[] dirnames = existingParentDir.split("/");
if (existingParentDir.equals("/")) {
dirnames = new String[] {""};
}
LOG.info("dirnames.length = " + dirnames.length);
Tree[] trees = getTreeStack(dirnames);
Tree tree = trees[trees.length - 1];
tree.removeEntry(name);
Pointer p = createRemoteTree(tree);
for (int i = dirnames.length - 2; i >= 0; i--) {
tree = trees[i];
tree.addTree(dirnames[i + 1], p);
p = createRemoteTree(tree);
}
setRootPointer(p);
}
private Pointer commit(File file) throws Exception {
LOG.info("about to commit " + file.getName());
Pointer result = null;
if (file.isDirectory()) {
Tree tree = new Tree();
for (File child : file.listFiles()) {
LOG.info("child: " + child.getName());
Pointer p = commit(child);
if (child.isDirectory()) {
tree.addTree(child.getName(), p);
} else {
tree.addFile(child.getName(), p, child.length());
}
}
result = createRemoteTree(tree);
} else { // file
result = createRemoteFile(file);
}
return result;
}
@Override
public void run() {
LOG.info("About");
Display display = window.getShell().getDisplay();
MessageBox messageBox = new MessageBox(new Shell(display), SWT.ICON_INFORMATION | SWT.OK);
String message = "Remote Storage Agent Prototype v1\n";
message += "Jean-Louis GUENEGO - JLG Consulting\n";
message += "Supelec Alcatel Lucent Chair on Flexible Radio @ 2011-2012\n";
messageBox.setMessage(message);
messageBox.setText("About");
messageBox.open();
window.getShell().setFocus();
}
public Id getNodeId(Address address) throws Exception {
if (nodeMap.size() == 0) {
throw new Exception("nodeMap is not populated.");
}
LOG.info("nodeMap=" + nodeMap);
Id nodeId = nodeMap.floorKey(address);
if (nodeId == null) {
nodeId = nodeMap.lastKey();
}
// if (nodeId == null) {
// throw new Exception("nodeMap is not populated at all");
// }
return nodeId;
}
void store(Address address, Content content) throws Exception {
if (isResponsible(address)) {
// local (even if this should be store elsewhere, store this for
// cache purpose.
// JLG.debug("local store");
storage.put(address, content);
} else {
// transfer the order to another agent
LOG.info("transfert the order");
Id nodeId = getNodeId(address);
Queue<Contact> contactQueue = makeContactQueue(nodeId);
getClient().store(contactQueue, address, content);
}
}
@Override
public synchronized void commit(String remoteDir, File file) throws Exception {
LOG.info("path = " + remoteDir);
String[] dirnames = remoteDir.split("/");
if (remoteDir.equals("/")) {
dirnames = new String[] {""};
}
LOG.info("dirnames.length = " + dirnames.length);
Tree[] trees = getTreeStack(dirnames);
Pointer p = commit(file);
Tree tree = trees[trees.length - 1];
if (file.isDirectory()) {
tree.addTree(file.getName(), p);
} else {
tree.addFile(file.getName(), p, file.length());
}
p = createRemoteTree(tree);
for (int i = dirnames.length - 2; i >= 0; i--) {
tree = trees[i];
tree.addTree(dirnames[i + 1], p);
p = createRemoteTree(tree);
}
setRootPointer(p);
}
public Contact removeContact(Contact contact) {
ContactMap contactMap = ds().getComponent(ContactMap.class);
OCPContact c = (OCPContact) contactMap.remove(contact);
try {
Iterator<Id> it = c.nodeIdSet.iterator();
while (it.hasNext()) {
Id id = it.next();
LOG.info("removing node to nodeMap");
nodeMap.remove(id);
}
return c;
} catch (Exception e) {
return null;
}
}
public Pointer set(OCPUser user, Serializable serializable) throws Exception {
LOG.info("set serializable: " + serializable.getClass());
return set(user, ds().serializer.serialize(serializable));
}
public void disconnect() throws Exception {
LOG.info("disconnect");
if (getServer() != null) {
getServer().stop();
}
}