Refactoring of some vars and funcs name
Theses change breaks old configuration files but make the code readability better thanks to VSCode plugins.
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@ -2,9 +2,9 @@ package core
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import "github.com/miekg/dns"
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//Handle the DNS request using miekg/dns
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//HandleDNSRequest : Handle the DNS request using miekg/dns
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//Requires dns.ReponseWriter and dns.Msg args
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func HandleDnsRequest(w dns.ResponseWriter, r *dns.Msg) {
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func HandleDNSRequest(w dns.ResponseWriter, r *dns.Msg) {
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//dns.Msg object
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//Will be passed to the parseQuery() function
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@ -1,20 +1,20 @@
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App_mode = "production" #Anything != production will show DEBUG messages
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[App]
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Ip = ":"
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IP = ":"
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Port = 5353
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Logfile = true
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Logdir = "/var/log/"
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[Database]
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Ip = "127.0.0.1"
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IP = "127.0.0.1"
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Username = "sacrebleu"
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Password = "superSecretPassword"
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Port = "3306"
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Db = "sacrebleudatabase"
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[Redis]
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Ip = "127.0.0.1"
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IP = "127.0.0.1"
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Port = 6379
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Password = ""
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Db = 0
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11
main.go
11
main.go
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@ -13,7 +13,10 @@ import (
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)
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//Global vars
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//conf Configuration
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var conf *utils.Conf
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//DB the SQL database
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var DB *sql.DB
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//Main loop
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@ -31,17 +34,17 @@ func main() {
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utils.InitLogger(conf)
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//Attach DNS request handler func for all domains
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dns.HandleFunc(".", core.HandleDnsRequest)
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dns.HandleFunc(".", core.HandleDNSRequest)
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//Initialize the redis database
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utils.RedisDatabase(conf)
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//Initialize the sql database
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utils.SqlDatabase(conf)
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utils.SQLDatabase(conf)
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//Start the DNS server
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server := &dns.Server{Addr: conf.App.Ip + strconv.Itoa(conf.App.Port), Net: "udp"} //define the server
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logrus.WithFields(logrus.Fields{"ip": conf.App.Ip, "port": conf.App.Port}).Infof("SERVER : Started") //log
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server := &dns.Server{Addr: conf.App.IP + strconv.Itoa(conf.App.Port), Net: "udp"} //define the server
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logrus.WithFields(logrus.Fields{"ip": conf.App.IP, "port": conf.App.Port}).Infof("SERVER : Started") //log
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err = server.ListenAndServe() //start it
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utils.CheckErr(err)
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@ -8,7 +8,7 @@ import (
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"github.com/sirupsen/logrus"
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)
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//Check the SQL and REDIS database for a Record.
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//GetRecord : Check the SQL and REDIS database for a Record.
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//A Record struct is used as input and output
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func GetRecord(entry Record) Record {
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//Check for strict record in Redis cache
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@ -16,13 +16,13 @@ var ctx = context.Background()
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//Redis client as global var
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var redisDb *redis.Client
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//Initialize the Redis Database
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//RedisDatabase : Initialize the Redis Database
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//Requires a conf struct
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//Return a *redis.Client
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func RedisDatabase(conf *Conf) *redis.Client {
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logrus.WithFields(logrus.Fields{"ip": conf.Redis.Ip, "port": conf.Redis.Port}).Infof("REDIS : Connection to DB")
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logrus.WithFields(logrus.Fields{"ip": conf.Redis.IP, "port": conf.Redis.Port}).Infof("REDIS : Connection to DB")
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rdb := redis.NewClient(&redis.Options{
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Addr: fmt.Sprintf("%s:%v", conf.Redis.Ip, conf.Redis.Port),
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Addr: fmt.Sprintf("%s:%v", conf.Redis.IP, conf.Redis.Port),
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Password: conf.Redis.Password,
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DB: conf.Redis.Db,
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}) //Connect to the DB
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@ -54,10 +54,8 @@ func redisCheckForRecord(redisKey string, entry Record) (Record, error) {
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err := json.Unmarshal([]byte(val), &entry)
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logrus.Debugf("REDIS : %s => %s", redisKey, entry.Content)
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return entry, err
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} else {
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//Else return nil
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return entry, redis.Nil
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}
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return entry, redis.Nil
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}
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//Add a record in the Redis database
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29
utils/sql.go
29
utils/sql.go
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@ -6,26 +6,26 @@ import (
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"time"
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"github.com/go-redis/redis"
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_ "github.com/go-sql-driver/mysql"
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_ "github.com/go-sql-driver/mysql" //MySQL driver
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"github.com/sirupsen/logrus"
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)
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//SQL database as global var
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//DB SQL database as global var
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var DB *sql.DB
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//Initialize the (My)SQL Database
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//SQLDatabase Initialize the (My)SQL Database
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//Requires a conf struct
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func SqlDatabase(conf *Conf) {
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func SQLDatabase(conf *Conf) {
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logrus.WithFields(logrus.Fields{"database": conf.Database.Db}).Infof("SQL : Connection to DB")
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//Connect to the Database
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db, err := sql.Open("mysql", fmt.Sprintf("%s:%s@tcp(%s:%s)/%s", conf.Database.Username, conf.Database.Password, conf.Database.Ip, conf.Database.Port, conf.Database.Db))
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db, err := sql.Open("mysql", fmt.Sprintf("%s:%s@tcp(%s:%s)/%s", conf.Database.Username, conf.Database.Password, conf.Database.IP, conf.Database.Port, conf.Database.Db))
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CheckErr(err)
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DB = db
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SqlTest() //Test SQL connexion
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SQLTest() //Test SQL connexion
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}
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//Test the SQL connexion by selecting all records from the database
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func SqlTest() {
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//SQLTest : Test the SQL connexion by selecting all records from the database
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func SQLTest() {
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_, err := DB.Query("SELECT name, content FROM records")
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CheckErr(err) //Panic if any error
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}
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@ -34,7 +34,7 @@ func SqlTest() {
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func sqlCheckForRecord(redisKey string, dKey string, entry Record) (Record, int) {
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dbg := DB.QueryRow(
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"SELECT id, content, ttl FROM records WHERE `name` = ? AND `type` = ?;", dKey, entry.Qtype).Scan(
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&entry.Id,
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&entry.ID,
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&entry.Content,
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&entry.TTL,
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)
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@ -50,10 +50,10 @@ func sqlCheckForRecord(redisKey string, dKey string, entry Record) (Record, int)
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logrus.Debugf("REDIS : Set entry for %s", redisKey)
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_ = redisSet(redisDb, redisKey, 30*time.Second, entry) //Set it in the Redis database for 30sec
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return entry, 0
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} else {
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//Else return 1 for err
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return entry, 1
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}
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//Else return 1 for err
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return entry, 1
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}
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//Check for a wildcard record in the SQL database
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@ -65,7 +65,7 @@ func sqlCheckForReverse6Wildcard(redisKey string, dKey string, entry Record) (Re
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//For each result check if it match the reverse IP
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for results.Next() {
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err = results.Scan(&returnedEntry.Id, &returnedEntry.Content, &returnedEntry.Fqdn)
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err = results.Scan(&returnedEntry.ID, &returnedEntry.Content, &returnedEntry.Fqdn)
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CheckErr(err)
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//Check if the record is matching the reversed IP
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@ -74,9 +74,8 @@ func sqlCheckForReverse6Wildcard(redisKey string, dKey string, entry Record) (Re
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//Cache the request in Redis if any result
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_ = redisSet(redisDb, redisKey, 10*time.Second, returnedEntry)
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return returnedEntry, err
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} else {
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logrus.Debug("REVERSE : WRONG wildcard reverse .")
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}
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logrus.Debug("REVERSE : WRONG wildcard reverse .")
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}
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return entry, redis.Nil
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@ -1,53 +1,53 @@
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package utils
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//Struct for App (dns server) configuration in the config.ini file
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//App : Struct for App (dns server) configuration in the config.ini file
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type App struct {
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Port int
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Ip string
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IP string
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Logdir string
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Logfile bool
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}
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//Struct for SQL Database configuration in the config.ini file
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//Database : Struct for SQL Database configuration in the config.ini file
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type Database struct {
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Ip string
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IP string
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Port string
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Username string
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Password string
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Db string
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}
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//Struct for Redis Database configuration in the config.ini file
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//Redis : Struct for Redis Database configuration in the config.ini file
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type Redis struct {
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Ip string
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IP string
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Port int
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Password string
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Db int
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Ttl int
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TTL int
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}
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//Struct for the whole config.ini file when it will be parsed by go-ini
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//Conf : Struct for the whole config.ini file when it will be parsed by go-ini
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type Conf struct {
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App_mode string
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AppMode string
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App
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Database
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Redis
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}
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//Struct for a Domain (not used currently).
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//Domain : Struct for a Domain (not used currently).
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type Domain struct {
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ID int `json:"id"`
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FriendlyName string
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Fqdn string
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OwnerId int
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OwnerID int
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LastEdit string
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}
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//Struct for a domain record
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//Record : Struct for a domain record
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//Defined by it's ID, DomainID (parent domain), Fqdn (or name), Content (value of the record), Type (as Qtype/int), TTL (used only for the DNS response and not the Redis TTL)
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type Record struct {
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Id int
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DomainId int
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ID int
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DomainID int
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Fqdn string
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Content string
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Type int
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@ -10,26 +10,26 @@ import (
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"github.com/snowzach/rotatefilehook"
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)
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//If fatal error, log it and panic
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//CheckErr : If fatal error, log it and panic
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func CheckErr(err error) {
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if err != nil {
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log.Fatalf("%s\n ", err.Error())
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}
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}
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//If basic error, log it as classic error but don't panic and keep kalm
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//DbgErr : If basic error, log it as classic error but don't panic and keep kalm
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func DbgErr(err error) {
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if err != nil {
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log.Errorf("%s\n ", err.Error())
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}
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}
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//Init the logrus logger with rotateFileHook.
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//InitLogger : Init the logrus logger with rotateFileHook.
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//Conf struct passed to get informations about the logger (debug or not)
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func InitLogger(conf *Conf) {
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var logLevel = logrus.InfoLevel //By default the level is Info.
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if conf.App_mode != "production" { //If the configuration contains anything different than "production"; the level is set to Debug
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if conf.AppMode != "production" { //If the configuration contains anything different than "production"; the level is set to Debug
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logLevel = logrus.DebugLevel
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}
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@ -62,7 +62,7 @@ func InitLogger(conf *Conf) {
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logrus.AddHook(rotateFileHook)
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}
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log.WithFields(log.Fields{"app_mode": conf.App_mode}).Info("Application mode")
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log.WithFields(log.Fields{"app_mode": conf.AppMode}).Info("Application mode")
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log.WithFields(log.Fields{"logLevel": logLevel}).Debug("Log level")
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}
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@ -74,7 +74,6 @@ func checkReverse6(entry Record, result Record) bool {
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logrus.Debugf("REVERSE checkReverse6 : %s", check)
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if strings.Contains(check, IP6arpa) {
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return false
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} else {
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return true
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}
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return true
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}
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