/**
* Authenticate the user and returns a new client {@link Context} instance.
*
* @return client context
* @throws LoginException login exception
*/
public Context authenticate() throws LoginException {
final byte[] address = token(req.getRemoteAddr());
try {
if (user == null || user.isEmpty() || pass == null || pass.isEmpty())
throw new LoginException(NOPASSWD);
final Context ctx = new Context(context(), null);
ctx.user = ctx.users.get(user);
if (ctx.user == null || !ctx.user.password.equals(md5(pass))) throw new LoginException();
context.blocker.remove(address);
return ctx;
} catch (final LoginException ex) {
// delay users with wrong passwords
for (int d = context.blocker.delay(address); d > 0; d--) Performance.sleep(100);
throw ex;
}
}
/**
* Creates an XQuery representation for the specified query.
*
* @param query query
* @param ctx database context
* @param root start from root node
* @return query
*/
public static String find(final String query, final Context ctx, final boolean root) {
// treat input as XQuery
if (query.startsWith("/")) return query;
final boolean r = root || ctx.root();
if (query.isEmpty()) return r ? "/" : ".";
// parse user input
final String qu = query.replaceAll(" \\+", " ");
final String[] terms = split(qu);
String pre = "";
String preds = "";
final String tag = "*";
for (String term : terms) {
if (term.startsWith("@=")) {
preds += "[@* = \"" + term.substring(2) + "\"]";
} else if (term.startsWith("=")) {
preds += "[text() = \"" + term.substring(1) + "\"]";
} else if (term.startsWith("~")) {
preds += "[text() contains text \"" + term.substring(1) + "\" using fuzzy]";
} else if (term.startsWith("@")) {
if (term.length() == 1) continue;
preds += "[@* contains text \"" + term.substring(1) + "\"]";
term = term.substring(1);
// add valid name tests
if (XMLToken.isName(token(term))) {
pre += (r ? "" : ".") + "//@" + term + " | ";
}
} else {
preds += "[text() contains text \"" + term + "\"]";
// add valid name tests
if (XMLToken.isName(token(term))) {
pre += (r ? "/" : "") + Axis.DESC + "::*:" + term + " | ";
}
}
}
if (pre.isEmpty() && preds.isEmpty()) return root ? "/" : ".";
// create final string
final TokenBuilder tb = new TokenBuilder();
tb.add(pre + (r ? "/" : "") + Axis.DESCORSELF + "::" + tag + preds);
return tb.toString();
}
/**
* Initializes the servlet context, based on the servlet context. Parses all context parameters
* and passes them on to the database context.
*
* @param sc servlet context
* @throws IOException I/O exception
*/
static synchronized void init(final ServletContext sc) throws IOException {
// skip process if context has already been initialized
if (context != null) return;
// set servlet path as home directory
final String path = sc.getRealPath("/");
System.setProperty(Prop.PATH, path);
// parse all context parameters
final HashMap<String, String> map = new HashMap<String, String>();
// store default web root
map.put(MainProp.HTTPPATH[0].toString(), path);
final Enumeration<?> en = sc.getInitParameterNames();
while (en.hasMoreElements()) {
final String key = en.nextElement().toString();
if (!key.startsWith(Prop.DBPREFIX)) continue;
// only consider parameters that start with "org.basex."
String val = sc.getInitParameter(key);
if (eq(key, DBUSER, DBPASS, DBMODE, DBVERBOSE)) {
// store servlet-specific parameters as system properties
System.setProperty(key, val);
} else {
// prefix relative paths with absolute servlet path
if (key.endsWith("path") && !new File(val).isAbsolute()) {
val = path + File.separator + val;
}
// store remaining parameters (without project prefix) in map
map.put(key.substring(Prop.DBPREFIX.length()).toUpperCase(Locale.ENGLISH), val);
}
}
context = new Context(map);
if (SERVER.equals(System.getProperty(DBMODE))) {
new BaseXServer(context);
} else {
context.log = new Log(context);
}
}