swissmakers_gmbh/fail2ban-ui
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try to improove DEBUGGING for log Raw JSON Body

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This commit is contained in:
Michael Reber
2025-07-16 15:47:33 +02:00
parent 86699209db
commit c9ae9e74d2
4 changed files with 52 additions and 15 deletions
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16
cmd/server/main.go
View File

@@ -1,3 +1,19 @@
// Fail2ban UI - A Swiss made, management interface for Fail2ban.
//
// Copyright (C) 2025 Swissmakers GmbH (https://swissmakers.ch)
//
// Licensed under the GNU General Public License, Version 3 (GPL-3.0)
// You may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// https://www.gnu.org/licenses/gpl-3.0.en.html
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package main
import (

8
go.mod
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@@ -4,6 +4,7 @@ go 1.23
require (
github.com/gin-gonic/gin v1.10.0
github.com/go-playground/validator/v10 v10.26.0
github.com/oschwald/maxminddb-golang v1.13.1
)
@@ -15,7 +16,6 @@ require (
github.com/gin-contrib/sse v1.0.0 // indirect
github.com/go-playground/locales v0.14.1 // indirect
github.com/go-playground/universal-translator v0.18.1 // indirect
github.com/go-playground/validator/v10 v10.24.0 // indirect
github.com/goccy/go-json v0.10.5 // indirect
github.com/json-iterator/go v1.1.12 // indirect
github.com/klauspost/cpuid/v2 v2.2.9 // indirect
@@ -27,10 +27,10 @@ require (
github.com/twitchyliquid64/golang-asm v0.15.1 // indirect
github.com/ugorji/go/codec v1.2.12 // indirect
golang.org/x/arch v0.13.0 // indirect
golang.org/x/crypto v0.32.0 // indirect
golang.org/x/crypto v0.33.0 // indirect
golang.org/x/net v0.34.0 // indirect
golang.org/x/sys v0.29.0 // indirect
golang.org/x/text v0.21.0 // indirect
golang.org/x/sys v0.30.0 // indirect
golang.org/x/text v0.22.0 // indirect
google.golang.org/protobuf v1.36.4 // indirect
gopkg.in/yaml.v3 v3.0.1 // indirect
)

16
go.sum
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@@ -21,8 +21,8 @@ github.com/go-playground/locales v0.14.1 h1:EWaQ/wswjilfKLTECiXz7Rh+3BjFhfDFKv/o
github.com/go-playground/locales v0.14.1/go.mod h1:hxrqLVvrK65+Rwrd5Fc6F2O76J/NuW9t0sjnWqG1slY=
github.com/go-playground/universal-translator v0.18.1 h1:Bcnm0ZwsGyWbCzImXv+pAJnYK9S473LQFuzCbDbfSFY=
github.com/go-playground/universal-translator v0.18.1/go.mod h1:xekY+UJKNuX9WP91TpwSH2VMlDf28Uj24BCp08ZFTUY=
github.com/go-playground/validator/v10 v10.24.0 h1:KHQckvo8G6hlWnrPX4NJJ+aBfWNAE/HH+qdL2cBpCmg=
github.com/go-playground/validator/v10 v10.24.0/go.mod h1:GGzBIJMuE98Ic/kJsBXbz1x/7cByt++cQ+YOuDM5wus=
github.com/go-playground/validator/v10 v10.26.0 h1:SP05Nqhjcvz81uJaRfEV0YBSSSGMc/iMaVtFbr3Sw2k=
github.com/go-playground/validator/v10 v10.26.0/go.mod h1:I5QpIEbmr8On7W0TktmJAumgzX4CA1XNl4ZmDuVHKKo=
github.com/goccy/go-json v0.10.5 h1:Fq85nIqj+gXn/S5ahsiTlK3TmC85qgirsdTP/+DeaC4=
github.com/goccy/go-json v0.10.5/go.mod h1:oq7eo15ShAhp70Anwd5lgX2pLfOS3QCiwU/PULtXL6M=
github.com/google/go-cmp v0.5.5 h1:Khx7svrCpmxxtHBq5j2mp/xVjsi8hQMfNLvJFAlrGgU=
@@ -67,15 +67,15 @@ github.com/ugorji/go/codec v1.2.12 h1:9LC83zGrHhuUA9l16C9AHXAqEV/2wBQ4nkvumAE65E
github.com/ugorji/go/codec v1.2.12/go.mod h1:UNopzCgEMSXjBc6AOMqYvWC1ktqTAfzJZUZgYf6w6lg=
golang.org/x/arch v0.13.0 h1:KCkqVVV1kGg0X87TFysjCJ8MxtZEIU4Ja/yXGeoECdA=
golang.org/x/arch v0.13.0/go.mod h1:FEVrYAQjsQXMVJ1nsMoVVXPZg6p2JE2mx8psSWTDQys=
golang.org/x/crypto v0.32.0 h1:euUpcYgM8WcP71gNpTqQCn6rC2t6ULUPiOzfWaXVVfc=
golang.org/x/crypto v0.32.0/go.mod h1:ZnnJkOaASj8g0AjIduWNlq2NRxL0PlBrbKVyZ6V/Ugc=
golang.org/x/crypto v0.33.0 h1:IOBPskki6Lysi0lo9qQvbxiQ+FvsCC/YWOecCHAixus=
golang.org/x/crypto v0.33.0/go.mod h1:bVdXmD7IV/4GdElGPozy6U7lWdRXA4qyRVGJV57uQ5M=
golang.org/x/net v0.34.0 h1:Mb7Mrk043xzHgnRM88suvJFwzVrRfHEHJEl5/71CKw0=
golang.org/x/net v0.34.0/go.mod h1:di0qlW3YNM5oh6GqDGQr92MyTozJPmybPK4Ev/Gm31k=
golang.org/x/sys v0.6.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
golang.org/x/sys v0.29.0 h1:TPYlXGxvx1MGTn2GiZDhnjPA9wZzZeGKHHmKhHYvgaU=
golang.org/x/sys v0.29.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
golang.org/x/text v0.21.0 h1:zyQAAkrwaneQ066sspRyJaG9VNi/YJ1NfzcGB3hZ/qo=
golang.org/x/text v0.21.0/go.mod h1:4IBbMaMmOPCJ8SecivzSH54+73PCFmPWxNTLm+vZkEQ=
golang.org/x/sys v0.30.0 h1:QjkSwP/36a20jFYWkSue1YwXzLmsV5Gfq7Eiy72C1uc=
golang.org/x/sys v0.30.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
golang.org/x/text v0.22.0 h1:bofq7m3/HAFvbF51jz3Q9wLg3jkvSPuiZu/pD1XwgtM=
golang.org/x/text v0.22.0/go.mod h1:YRoo4H8PVmsu+E3Ou7cqLVH8oXWIHVoX0jqUWALQhfY=
golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543 h1:E7g+9GITq07hpfrRu66IVDexMakfv52eLZ2CXBWiKr4=
golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
google.golang.org/protobuf v1.36.4 h1:6A3ZDJHn/eNqc1i+IdefRzy/9PokBTPvcqMySR7NNIM=

27
pkg/web/handlers.go
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@@ -31,6 +31,7 @@ import (
"time"
"github.com/gin-gonic/gin"
"github.com/go-playground/validator/v10"
"github.com/oschwald/maxminddb-golang"
"github.com/swissmakers/fail2ban-ui/internal/config"
"github.com/swissmakers/fail2ban-ui/internal/fail2ban"
@@ -112,14 +113,33 @@ func BanNotificationHandler(c *gin.Context) {
// **DEBUGGING: Log Raw JSON Body**
body, _ := io.ReadAll(c.Request.Body)
log.Printf("----------------------------------------------------")
log.Printf("Request Content-Length: %d", c.Request.ContentLength)
log.Printf("Request Headers: %v", c.Request.Header)
log.Printf("Request Headers: %v", c.Request.Body)
log.Printf("----------------------------------------------------")
config.DebugLog("📩 Incoming Ban Notification: %s\n", string(body))
// Rebind body so Gin can parse it again (important!)
c.Request.Body = io.NopCloser(bytes.NewBuffer(body))
log.Printf("Request Content-Length: %d", c.Request.ContentLength)
log.Printf("Request Headers: %v", c.Request.Header)
log.Printf("Request Headers: %v", c.Request.Body)
// Parse JSON request body
if err := c.ShouldBindJSON(&request); err != nil {
log.Printf("❌ Invalid request: %v\n", err)
var verr validator.ValidationErrors
if errors.As(err, &verr) {
for _, fe := range verr {
log.Printf("❌ Validierungsfehler: Feld '%s' verletzt Regel '%s'", fe.Field(), fe.ActualTag())
}
} else {
log.Printf("❌ JSON-Parsing Fehler: %v", err)
}
log.Printf("Raw JSON: %s", string(body))
c.JSON(http.StatusBadRequest, gin.H{"error": "Invalid request: " + err.Error()})
return
}
@@ -484,7 +504,8 @@ func sendEmail(to, subject, body string, settings config.AppSettings) error {
smtpAddr := net.JoinHostPort(smtpHost, fmt.Sprintf("%d", smtpPort))
// **Choose Connection Type**
if smtpPort == 465 {
switch smtpPort {
case 465:
// SMTPS (Implicit TLS) - Not supported at the moment.
tlsConfig := &tls.Config{ServerName: smtpHost}
conn, err := tls.Dial("tcp", smtpAddr, tlsConfig)
@@ -505,7 +526,7 @@ func sendEmail(to, subject, body string, settings config.AppSettings) error {
return sendSMTPMessage(client, settings.SMTP.From, to, msg)
} else if smtpPort == 587 {
case 587:
// STARTTLS (Explicit TLS)
conn, err := net.Dial("tcp", smtpAddr)
if err != nil {