mirror of
https://github.com/wneessen/logranger.git
synced 2024-10-05 16:45:56 +02:00
Winni Neessen
80e30c6bda
The changes involved refactor and clean-up of variable names. This encompasses making the names more descriptive and meaningful to enhance the readability of the code. Accuracy of variable names in conveying their usage and purpose has been greatly improved. The changes span across multiple files, touching crucial components like the server, rulesets, connection, and configuration handling.
90 lines
2.9 KiB
Go
90 lines
2.9 KiB
Go
// SPDX-FileCopyrightText: 2023 Winni Neessen <wn@neessen.dev>
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//
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// SPDX-License-Identifier: MIT
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package logranger
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import (
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"crypto/tls"
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"fmt"
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"net"
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"strings"
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)
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// ListenerType is an enumeration wrapper for the different listener types
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type ListenerType uint
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const (
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// ListenerUnix is a constant of type ListenerType that represents a UNIX listener.
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ListenerUnix ListenerType = iota
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// ListenerTCP is a constant representing the type of listener that uses TCP protocol.
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ListenerTCP
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// ListenerTLS is a constant of type ListenerType that represents a TLS listener.
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ListenerTLS
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)
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// NewListener initializes and returns a net.Listener based on the provided
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// configuration. It takes a pointer to a Config struct as a parameter.
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// Returns the net.Listener and an error if any occurred during initialization.
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func NewListener(config *Config) (net.Listener, error) {
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var listener net.Listener
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var listenerErr error
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switch config.Listener.Type {
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case ListenerUnix:
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resolveUnixAddr, err := net.ResolveUnixAddr("unix", config.Listener.ListenerUnix.Path)
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if err != nil {
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return nil, fmt.Errorf("failed to resolve UNIX listener socket: %w", err)
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}
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listener, listenerErr = net.Listen("unix", resolveUnixAddr.String())
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case ListenerTCP:
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listenAddr := net.JoinHostPort(config.Listener.ListenerTCP.Addr,
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fmt.Sprintf("%d", config.Listener.ListenerTCP.Port))
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listener, listenerErr = net.Listen("tcp", listenAddr)
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case ListenerTLS:
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if config.Listener.ListenerTLS.CertPath == "" || config.Listener.ListenerTLS.KeyPath == "" {
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return nil, ErrCertConfigEmpty
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}
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cert, err := tls.LoadX509KeyPair(config.Listener.ListenerTLS.CertPath, config.Listener.ListenerTLS.KeyPath)
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if err != nil {
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return nil, fmt.Errorf("failed to load X509 certificate: %w", err)
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}
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listenAddr := net.JoinHostPort(config.Listener.ListenerTLS.Addr, fmt.Sprintf("%d", config.Listener.ListenerTLS.Port))
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listenConf := &tls.Config{Certificates: []tls.Certificate{cert}}
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listener, listenerErr = tls.Listen("tcp", listenAddr, listenConf)
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default:
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return nil, fmt.Errorf("failed to initialize listener: unknown listener type in config")
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}
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if listenerErr != nil {
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return nil, fmt.Errorf("failed to initialize listener: %w", listenerErr)
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}
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return listener, nil
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}
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// UnmarshalString satisfies the fig.StringUnmarshaler interface for the ListenerType type
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func (l *ListenerType) UnmarshalString(value string) error {
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switch strings.ToLower(value) {
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case "unix":
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*l = ListenerUnix
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case "tcp":
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*l = ListenerTCP
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case "tls":
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*l = ListenerTLS
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default:
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return fmt.Errorf("unknown listener type: %s", value)
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}
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return nil
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}
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// String satisfies the fmt.Stringer interface for the ListenerType type
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func (l ListenerType) String() string {
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switch l {
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case ListenerUnix:
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return "UNIX listener"
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case ListenerTCP:
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return "TCP listener"
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case ListenerTLS:
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return "TLS listener"
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default:
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return "Unknown listener type"
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}
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}
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