src/main/java/org/takes/facets/auth/PsByFlag.java
/*
* The MIT License (MIT)
*
* Copyright (c) 2014-2024 Yegor Bugayenko
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
package org.takes.facets.auth;
import java.util.AbstractMap;
import java.util.Collections;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;
import java.util.regex.Pattern;
import lombok.EqualsAndHashCode;
import org.takes.Request;
import org.takes.Response;
import org.takes.misc.Opt;
import org.takes.rq.RqHref;
/**
* Passes by flag.
*
* <p>The class is immutable and thread-safe.
*
* @since 0.1
*/
@EqualsAndHashCode
public final class PsByFlag implements Pass {
/**
* The flag.
*/
private final String flag;
/**
* Flags and passes.
*/
private final Map<Pattern, Pass> passes;
/**
* Ctor.
* @param pairs Map entries
* @since 0.5.1
*/
public PsByFlag(final PsByFlag.Pair... pairs) {
this(PsByFlag.class.getSimpleName(), pairs);
}
/**
* Ctor.
* @param map Map
*/
public PsByFlag(final Map<Pattern, Pass> map) {
this(PsByFlag.class.getSimpleName(), map);
}
/**
* Ctor.
* @param flg Flag
* @param pairs Map entries
* @since 0.5.1
*/
public PsByFlag(final String flg, final PsByFlag.Pair... pairs) {
this(flg, PsByFlag.asMap(pairs));
}
/**
* Ctor.
* @param flg Flag
* @param map Map
*/
public PsByFlag(final String flg, final Map<Pattern, Pass> map) {
this.flag = flg;
this.passes = Collections.unmodifiableMap(map);
}
@Override
public Opt<Identity> enter(final Request req) throws Exception {
final Iterator<String> flg = new RqHref.Base(req).href()
.param(this.flag).iterator();
Opt<Identity> user = new Opt.Empty<>();
if (flg.hasNext()) {
final String value = flg.next();
for (final Map.Entry<Pattern, Pass> ent : this.passes.entrySet()) {
if (ent.getKey().matcher(value).matches()) {
user = ent.getValue().enter(req);
break;
}
}
}
return user;
}
@Override
public Response exit(final Response response,
final Identity identity) {
return response;
}
/**
* Convert entries to map.
* @param entries Entries
* @return Map
*/
@SafeVarargs
private static Map<Pattern, Pass> asMap(
final Map.Entry<Pattern, Pass>... entries) {
final Map<Pattern, Pass> map = new HashMap<>(entries.length);
for (final Map.Entry<Pattern, Pass> ent : entries) {
map.put(ent.getKey(), ent.getValue());
}
return map;
}
/**
* Pair of values.
* @since 0.1
*/
public static final class Pair
extends AbstractMap.SimpleEntry<Pattern, Pass> {
/**
* Serialization marker.
*/
private static final long serialVersionUID = 7362482770166663015L;
/**
* Ctor.
* @param key Key
* @param pass Pass
*/
public Pair(final String key, final Pass pass) {
this(Pattern.compile(Pattern.quote(key)), pass);
}
/**
* Ctor.
* @param key Key
* @param pass Pass
*/
public Pair(final Pattern key, final Pass pass) {
super(key, pass);
}
}
}