mirror of
https://github.com/swissmakers/fail2ban-ui.git
synced 2026-04-11 13:47:05 +02:00
106 lines
3.0 KiB
Go
106 lines
3.0 KiB
Go
// Fail2ban UI - A Swiss made, management interface for Fail2ban.
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//
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// Copyright (C) 2025 Swissmakers GmbH (https://swissmakers.ch)
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//
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// Licensed under the GNU General Public License, Version 3 (GPL-3.0)
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// You may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// https://www.gnu.org/licenses/gpl-3.0.en.html
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package web
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import (
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"io"
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"log"
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"os"
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"sync"
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"github.com/swissmakers/fail2ban-ui/internal/config"
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)
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// ConsoleLogWriter is a multi-writer that writes to both the original log output
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// and broadcasts to WebSocket clients when console output is enabled
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type ConsoleLogWriter struct {
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originalWriter io.Writer
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hub *Hub
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mu sync.RWMutex
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enabled bool
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}
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// NewConsoleLogWriter creates a new console log writer
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func NewConsoleLogWriter(hub *Hub, originalWriter io.Writer) *ConsoleLogWriter {
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return &ConsoleLogWriter{
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originalWriter: originalWriter,
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hub: hub,
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enabled: false,
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}
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}
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// SetEnabled enables or disables console output broadcasting
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func (c *ConsoleLogWriter) SetEnabled(enabled bool) {
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c.mu.Lock()
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defer c.mu.Unlock()
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c.enabled = enabled
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}
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// Write implements io.Writer interface
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func (c *ConsoleLogWriter) Write(p []byte) (n int, err error) {
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// Always write to original writer
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n, err = c.originalWriter.Write(p)
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// Broadcast to WebSocket if enabled
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c.mu.RLock()
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enabled := c.enabled
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c.mu.RUnlock()
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if enabled && c.hub != nil {
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// Remove trailing newline for cleaner display
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message := string(p)
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if len(message) > 0 && message[len(message)-1] == '\n' {
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message = message[:len(message)-1]
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}
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if len(message) > 0 {
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c.hub.BroadcastConsoleLog(message)
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}
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}
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return n, err
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}
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var globalConsoleLogWriter *ConsoleLogWriter
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var consoleLogWriterOnce sync.Once
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// SetupConsoleLogWriter sets up the console log writer and replaces the standard log output
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// This captures all log.Printf, log.Println, etc. output
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func SetupConsoleLogWriter(hub *Hub) {
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consoleLogWriterOnce.Do(func() {
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// Create a multi-writer that writes to both original stdout and our console writer
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globalConsoleLogWriter = NewConsoleLogWriter(hub, os.Stdout)
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// Replace log output - this captures all log.Printf, log.Println, etc.
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log.SetOutput(globalConsoleLogWriter)
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})
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}
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// UpdateConsoleLogEnabled updates the enabled state based on settings
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func UpdateConsoleLogEnabled() {
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if globalConsoleLogWriter != nil {
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settings := config.GetSettings()
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globalConsoleLogWriter.SetEnabled(settings.ConsoleOutput)
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}
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}
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// SetConsoleLogEnabled directly sets the enabled state
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func SetConsoleLogEnabled(enabled bool) {
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if globalConsoleLogWriter != nil {
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globalConsoleLogWriter.SetEnabled(enabled)
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}
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}
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