refined telegram bot

server/go.mod

@@ -2,17 +2,16 @@ module github.com/Vomitblood/cspj-application/server
 
 go 1.23.2
 
-require github.com/jackc/pgx/v5 v5.7.1
+require (
+	github.com/fsnotify/fsnotify v1.8.0
+	github.com/go-telegram-bot-api/telegram-bot-api/v5 v5.5.1
+	github.com/jackc/pgx/v5 v5.7.1
+)
 
 require (
-	github.com/fsnotify/fsnotify v1.8.0 // indirect
-	github.com/go-telegram-bot-api/telegram-bot-api/v5 v5.5.1 // indirect
 	github.com/jackc/pgpassfile v1.0.0 // indirect
 	github.com/jackc/pgservicefile v0.0.0-20240606120523-5a60cdf6a761 // indirect
 	github.com/jackc/puddle/v2 v2.2.2 // indirect
-	github.com/tidwall/gjson v1.18.0 // indirect
-	github.com/tidwall/match v1.1.1 // indirect
-	github.com/tidwall/pretty v1.2.0 // indirect
 	golang.org/x/crypto v0.32.0 // indirect
 	golang.org/x/sync v0.10.0 // indirect
 	golang.org/x/sys v0.29.0 // indirect

server/go.sum

@@ -20,12 +20,6 @@ github.com/stretchr/testify v1.3.0/go.mod h1:M5WIy9Dh21IEIfnGCwXGc5bZfKNJtfHm1UV
 github.com/stretchr/testify v1.7.0/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
 github.com/stretchr/testify v1.8.1 h1:w7B6lhMri9wdJUVmEZPGGhZzrYTPvgJArz7wNPgYKsk=
 github.com/stretchr/testify v1.8.1/go.mod h1:w2LPCIKwWwSfY2zedu0+kehJoqGctiVI29o6fzry7u4=
-github.com/tidwall/gjson v1.18.0 h1:FIDeeyB800efLX89e5a8Y0BNH+LOngJyGrIWxG2FKQY=
-github.com/tidwall/gjson v1.18.0/go.mod h1:/wbyibRr2FHMks5tjHJ5F8dMZh3AcwJEMf5vlfC0lxk=
-github.com/tidwall/match v1.1.1 h1:+Ho715JplO36QYgwN9PGYNhgZvoUSc9X2c80KVTi+GA=
-github.com/tidwall/match v1.1.1/go.mod h1:eRSPERbgtNPcGhD8UCthc6PmLEQXEWd3PRB5JTxsfmM=
-github.com/tidwall/pretty v1.2.0 h1:RWIZEg2iJ8/g6fDDYzMpobmaoGh5OLl4AXtGUGPcqCs=
-github.com/tidwall/pretty v1.2.0/go.mod h1:ITEVvHYasfjBbM0u2Pg8T2nJnzm8xPwvNhhsoaGGjNU=
 golang.org/x/crypto v0.32.0 h1:euUpcYgM8WcP71gNpTqQCn6rC2t6ULUPiOzfWaXVVfc=
 golang.org/x/crypto v0.32.0/go.mod h1:ZnnJkOaASj8g0AjIduWNlq2NRxL0PlBrbKVyZ6V/Ugc=
 golang.org/x/sync v0.10.0 h1:3NQrjDixjgGwUOCaF8w2+VYHv0Ve/vGYSbdkTa98gmQ=

server/internal/telegram/telegram.go

@@ -12,6 +12,7 @@ import (
 )
 
 const (
+	// TODO: add config for user to specify log location
 	modsecLogFile  = "/home/vomitblood/build/cspj-application/docker/chungus/logs/host-fs-auditlog.log"
 	telegramToken  = "7215466800:AAGwjZnXEfbbjQiA0y7qtSzbSZNUWQJnyjo"
 	telegramChatID = 622943829
@@ -40,7 +41,7 @@ func TelegramBotInit() {
 		log.Fatal("Failed to send test message:", err)
 	}
 
-	// Start watching the log file for changes
+	// start watching the log file for changes
 	watchLogFile(bot)
 }
 
@@ -51,13 +52,13 @@ func watchLogFile(bot *tg.BotAPI) {
 	}
 	defer watcher.Close()
 
-	// Add log file to watcher
+	// add log file to watcher
 	err = watcher.Add(modsecLogFile)
 	if err != nil {
 		log.Fatal("Failed to watch log file:", err)
 	}
 
-	log.Println("🔍 Monitoring log file for changes...")
+	log.Println("Monitoring log file for changes...")
 
 	for {
 		select {
@@ -66,7 +67,7 @@ func watchLogFile(bot *tg.BotAPI) {
 				return
 			}
 			if event.Op&fsnotify.Write == fsnotify.Write {
-				log.Println("📄 Log file updated, reading new entries...")
+				log.Println("Log file updated, reading new entries...")
 				readNewLines(bot)
 			}
 
@@ -74,7 +75,7 @@ func watchLogFile(bot *tg.BotAPI) {
 			if !ok {
 				return
 			}
-			log.Println("⚠️ Watcher error:", err)
+			log.Println("Watcher error:", err)
 		}
 	}
 }
@@ -82,12 +83,12 @@ func watchLogFile(bot *tg.BotAPI) {
 func readNewLines(bot *tg.BotAPI) {
 	file, err := os.Open(modsecLogFile)
 	if err != nil {
-		log.Println("❌ Failed to reopen log file:", err)
+		log.Println("Failed to reopen log file:", err)
 		return
 	}
 	defer file.Close()
 
-	// Move to the last read position
+	// move to the last read position
 	file.Seek(lastReadPosition, os.SEEK_SET)
 	scanner := bufio.NewScanner(file)
 
@@ -95,23 +96,25 @@ func readNewLines(bot *tg.BotAPI) {
 		line := scanner.Text()
 		var logEntry LogEntry
 
-		// Try to parse JSON
+		// try to parse json
 		if err := json.Unmarshal([]byte(line), &logEntry); err != nil {
 			log.Println("⚠️ Failed to parse JSON:", err)
-			continue // Skip invalid JSON lines
+			// skip invalid json lines
+			// very crucial as modsecurity does not respect the json spec
+			continue
 		}
 
-		// Send only the first message from messages[]
+		// send index 0 element will do
 		if len(logEntry.AuditData.Messages) > 0 {
 			sendTelegramAlert(bot, logEntry.AuditData.Messages[0])
 		}
 	}
 
-	// Update last read position
+	// update last read position
 	lastReadPosition, _ = file.Seek(0, os.SEEK_CUR)
 
 	if err := scanner.Err(); err != nil {
-		log.Println("❌ Error reading log file:", err)
+		log.Println("Error reading log file:", err)
 	}
 }
 
@@ -119,6 +122,6 @@ func sendTelegramAlert(bot *tg.BotAPI, message string) {
 	msg := tg.NewMessage(telegramChatID, fmt.Sprintf("🚨 *WEEWOO ALERT* 🚨\n%s", message))
 	_, err := bot.Send(msg)
 	if err != nil {
-		log.Println("❌ Failed to send Telegram message:", err)
+		log.Println("Failed to send Telegram message:", err)
 	}
 }