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Jitsi Common Components (Configuration Utilities)

There is a newer version: 1.1-141-g30ec741

/*
 * Copyright @ 2018 - present 8x8, Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.jitsi.config

import com.typesafe.config.Config
import com.typesafe.config.ConfigFactory
import com.typesafe.config.ConfigValueFactory
import org.jitsi.utils.ConfigUtils
import java.util.regex.Pattern

private fun shouldMask(pattern: Pattern?, key: String): Boolean {
    pattern ?: return false
    return pattern.matcher(key).find()
}

const val MASK = "******"

/**
 * Returns a new [Config] with any values matching
 * [ConfigUtils.PASSWORD_SYS_PROPS] changed to [MASK].   NOTE
 * that this will change the type of the value to a [String]
 */
fun Config.mask(): Config {
    // Or should this be held in the config itself?
    val fieldRegex = ConfigUtils.PASSWORD_SYS_PROPS ?: return ConfigFactory.load(this)
    val pattern =
        Pattern.compile(fieldRegex, Pattern.CASE_INSENSITIVE)
    return entrySet().fold(this) { config, (key, _) ->
        when {
            shouldMask(pattern, key) -> config.withValue(key, ConfigValueFactory.fromAnyRef(MASK))
            else -> config
        }
    }
}