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package com.vauth.foxyvpn.vpn.upstream
import com.vauth.foxyvpn.data.AppLogger
import io.netty.util.internal.logging.AbstractInternalLogger
import io.netty.util.internal.logging.InternalLogger
import io.netty.util.internal.logging.InternalLoggerFactory
object NettyLoggingBridge {
private const val TAG = "Netty"
private val BEARER_TOKEN_PATTERN = Regex("Bearer\\s+[A-Za-z0-9._-]+")
private fun redactSecrets(message: String): String =
if (message.contains("Bearer ", ignoreCase = true)) {
BEARER_TOKEN_PATTERN.replace(message, "Bearer <redacted>")
} else {
message
}
fun install() {
InternalLoggerFactory.setDefaultFactory(Factory)
}
private object Factory : InternalLoggerFactory() {
override fun newInstance(name: String): InternalLogger = BridgedLogger(name)
}
private class BridgedLogger(loggerName: String) : AbstractInternalLogger(loggerName) {
private val shortTag = "$TAG/${loggerName.substringAfterLast('.')}"
override fun isTraceEnabled() = false
override fun isDebugEnabled() = false
override fun isInfoEnabled() = false
override fun isWarnEnabled() = true
override fun isErrorEnabled() = true
override fun trace(msg: String) = AppLogger.d(shortTag, redactSecrets(msg))
override fun trace(format: String, arg: Any?) = AppLogger.d(shortTag, redactSecrets(format(format, arg)))
override fun trace(format: String, argA: Any?, argB: Any?) = AppLogger.d(shortTag, redactSecrets(format(format, argA, argB)))
override fun trace(format: String, vararg arguments: Any?) = AppLogger.d(shortTag, redactSecrets(format(format, *arguments)))
override fun trace(msg: String, t: Throwable?) = AppLogger.d(shortTag, redactSecrets(withCause(msg, t)))
override fun debug(msg: String) = AppLogger.d(shortTag, redactSecrets(msg))
override fun debug(format: String, arg: Any?) = AppLogger.d(shortTag, redactSecrets(format(format, arg)))
override fun debug(format: String, argA: Any?, argB: Any?) = AppLogger.d(shortTag, redactSecrets(format(format, argA, argB)))
override fun debug(format: String, vararg arguments: Any?) = AppLogger.d(shortTag, redactSecrets(format(format, *arguments)))
override fun debug(msg: String, t: Throwable?) = AppLogger.d(shortTag, redactSecrets(withCause(msg, t)))
override fun info(msg: String) = AppLogger.d(shortTag, redactSecrets(msg))
override fun info(format: String, arg: Any?) = AppLogger.d(shortTag, redactSecrets(format(format, arg)))
override fun info(format: String, argA: Any?, argB: Any?) = AppLogger.d(shortTag, redactSecrets(format(format, argA, argB)))
override fun info(format: String, vararg arguments: Any?) = AppLogger.d(shortTag, redactSecrets(format(format, *arguments)))
override fun info(msg: String, t: Throwable?) = AppLogger.d(shortTag, redactSecrets(withCause(msg, t)))
override fun warn(msg: String) = AppLogger.w(shortTag, redactSecrets(msg))
override fun warn(format: String, arg: Any?) = AppLogger.w(shortTag, redactSecrets(format(format, arg)))
override fun warn(format: String, argA: Any?, argB: Any?) = AppLogger.w(shortTag, redactSecrets(format(format, argA, argB)))
override fun warn(format: String, vararg arguments: Any?) = AppLogger.w(shortTag, redactSecrets(format(format, *arguments)))
override fun warn(msg: String, t: Throwable?) = AppLogger.w(shortTag, redactSecrets(msg), t)
override fun error(msg: String) = AppLogger.e(shortTag, redactSecrets(msg))
override fun error(format: String, arg: Any?) = AppLogger.e(shortTag, redactSecrets(format(format, arg)))
override fun error(format: String, argA: Any?, argB: Any?) = AppLogger.e(shortTag, redactSecrets(format(format, argA, argB)))
override fun error(format: String, vararg arguments: Any?) = AppLogger.e(shortTag, redactSecrets(format(format, *arguments)))
override fun error(msg: String, t: Throwable?) = AppLogger.e(shortTag, redactSecrets(msg), t)
private fun withCause(msg: String, t: Throwable?): String =
if (t != null) "$msg: ${t.message}" else msg
private fun format(fmt: String, vararg args: Any?): String {
if (args.isEmpty()) return fmt
val builder = StringBuilder(fmt.length + 16)
var argIndex = 0
var i = 0
while (i < fmt.length) {
if (i < fmt.length - 1 && fmt[i] == '{' && fmt[i + 1] == '}' && argIndex < args.size) {
builder.append(args[argIndex])
argIndex++
i += 2
} else {
builder.append(fmt[i])
i++
}
}
return builder.toString()
}
}
}
arblant