Pull request 2100: v0.107.42-rc

Squashed commit of the following:

commit 284190f748345c7556e60b67f051ec5f6f080948
Author: Ainar Garipov <A.Garipov@AdGuard.COM>
Date:   Wed Dec 6 19:36:00 2023 +0300

    all: sync with master; upd chlog

internal/next/cmd/log.go

@@ -0,0 +1,39 @@
+package cmd
+
+import (
+	"fmt"
+	"os"
+
+	"github.com/AdguardTeam/AdGuardHome/internal/aghos"
+	"github.com/AdguardTeam/golibs/log"
+)
+
+// syslogServiceName is the name of the AdGuard Home service used for writing
+// logs to the system log.
+const syslogServiceName = "AdGuardHome"
+
+// setLog sets up the text logging.
+//
+// TODO(a.garipov): Add parameters from configuration file.
+func setLog(opts *options) (err error) {
+	switch opts.confFile {
+	case "stdout":
+		log.SetOutput(os.Stdout)
+	case "stderr":
+		log.SetOutput(os.Stderr)
+	case "syslog":
+		err = aghos.ConfigureSyslog(syslogServiceName)
+		if err != nil {
+			return fmt.Errorf("initializing syslog: %w", err)
+		}
+	default:
+		// TODO(a.garipov): Use the path.
+	}
+
+	if opts.verbose {
+		log.SetLevel(log.DEBUG)
+		log.Debug("verbose logging enabled")
+	}
+
+	return nil
+}