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Enhance URL validation and error handling in checkAndUpdateStatus function

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This commit is contained in:
headlessdev 2025-04-18 15:55:57 +02:00
parent 406091fdcb
commit 3e49932382
1 changed files with 33 additions and 2 deletions
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35
agent/main.go
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@ -2,9 +2,13 @@ package main
import (
"context"
"crypto/x509"
"database/sql"
"errors"
"fmt"
"net"
"net/http"
"net/url"
"os"
"strings"
"sync"
@ -122,6 +126,11 @@ func notifMutexCopy(src []Notification) []Notification {
return copyDst
}
func isIPAddress(host string) bool {
ip := net.ParseIP(host)
return ip != nil
}
func loadNotifications(db *sql.DB) ([]Notification, error) {
rows, err := db.Query(
`SELECT id, enabled, type, "smtpHost", "smtpPort", "smtpFrom", "smtpUser", "smtpPass", "smtpSecure", "smtpTo",
@ -198,6 +207,14 @@ func checkAndUpdateStatus(db *sql.DB, client *http.Client, apps []Application) {
logPrefix := fmt.Sprintf("[App %s (%s)]", app.Name, app.PublicURL)
fmt.Printf("%s Checking...\n", logPrefix)
parsedURL, parseErr := url.Parse(app.PublicURL)
if parseErr != nil {
fmt.Printf("%s Invalid URL: %v\n", logPrefix, parseErr)
continue
}
hostIsIP := isIPAddress(parsedURL.Hostname())
httpCtx, httpCancel := context.WithTimeout(context.Background(), 4*time.Second)
req, err := http.NewRequestWithContext(httpCtx, "HEAD", app.PublicURL, nil)
if err != nil {
@ -223,7 +240,22 @@ func checkAndUpdateStatus(db *sql.DB, client *http.Client, apps []Application) {
isOnline = (resp.StatusCode >= 200 && resp.StatusCode < 300) || resp.StatusCode == 405
resp.Body.Close()
} else {
fmt.Printf("%s HTTP error: %v\n", logPrefix, err)
if err != nil {
fmt.Printf("%s HTTP error: %v\n", logPrefix, err)
// Sonderbehandlung für IP-Adressen + TLS-Zertifikatfehler
if hostIsIP {
var urlErr *url.Error
if errors.As(err, &urlErr) {
var certErr x509.HostnameError
var unknownAuthErr x509.UnknownAuthorityError
if errors.As(urlErr.Err, &certErr) || errors.As(urlErr.Err, &unknownAuthErr) {
fmt.Printf("%s Ignoring TLS error for IP, marking as online.\n", logPrefix)
isOnline = true
}
}
}
}
}
httpCancel()
@ -263,7 +295,6 @@ func checkAndUpdateStatus(db *sql.DB, client *http.Client, apps []Application) {
dbCancel2()
}
}
func sendNotifications(message string) {
notifMutex.RLock()
notifs := notifMutexCopy(notifications)