org.graylog2.system.urlwhitelist.RegexWhitelistEntry Maven / Gradle / Ivy
/*
* Copyright (C) 2020 Graylog, Inc.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the Server Side Public License, version 1,
* as published by MongoDB, Inc.
*
* This program 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
* Server Side Public License for more details.
*
* You should have received a copy of the Server Side Public License
* along with this program. If not, see
* .
*/
package org.graylog2.system.urlwhitelist;
import com.fasterxml.jackson.annotation.JsonAutoDetect;
import com.fasterxml.jackson.annotation.JsonCreator;
import com.fasterxml.jackson.annotation.JsonProperty;
import com.google.auto.value.AutoValue;
import org.graylog.autovalue.WithBeanGetter;
import java.util.regex.Pattern;
import java.util.regex.PatternSyntaxException;
@AutoValue
@WithBeanGetter
@JsonAutoDetect
public abstract class RegexWhitelistEntry implements WhitelistEntry {
private Pattern pattern;
@JsonCreator
public static RegexWhitelistEntry create(@JsonProperty("id") String id, @JsonProperty("title") String title,
@JsonProperty("value") String value) {
// compile the pattern early so that we can catch illegal expressions asap
final Pattern pattern;
try {
pattern = Pattern.compile(value, Pattern.DOTALL);
} catch (PatternSyntaxException e) {
throw new IllegalArgumentException(
"Cannot create whitelist entry for invalid regular expression '" + value + "': " + e.getMessage(),
e);
}
final RegexWhitelistEntry whitelistEntry = new AutoValue_RegexWhitelistEntry(id, Type.REGEX, title, value);
whitelistEntry.pattern = pattern;
return whitelistEntry;
}
@Override
public boolean isWhitelisted(String url) {
return pattern.matcher(url).find();
}
}