package utils import ( "fmt" "strings" "github.com/go-redis/redis/v8" "github.com/sirupsen/logrus" ) //GetRecord : Check the SQL and REDIS database for a Record. //A Record struct is used as input and output func GetRecord(entry Record) Record { //Check for strict record in Redis cache redisKey := entry.Fqdn + "--" + fmt.Sprint(entry.Qtype) result, redisErr := redisCheckForRecord(redisKey, entry) var sqlErr bool //The err returned for sqlCheckForRecord or sqlCheckForReverse6Wildcard //If reverse DNS reverseCheck := IsReverse(entry.Fqdn) if reverseCheck > 0 { //If reverse record not found in redis if redisErr == redis.Nil { //Check for it in the SQL database logrus.Debug("QUERIES : Check for strict reverse in MySQL") result, sqlErr = sqlCheckForRecord(redisKey, entry.Fqdn, entry) if sqlErr { //Check for wildcard reverse in the SQL logrus.Debug("QUERIES : Check for wildcard reverse in MySQL") result, _ = sqlCheckForReverse6Wildcard(redisKey, entry.Fqdn, entry) } } //For dynamic reverse dns //Check for it by looking for a "%s" in the record content //If true, replace it with the formated IP if strings.Contains(result.Content, "%s") { record := ExtractAddressFromReverse(entry.Fqdn) var recordFormated string if reverseCheck == 1 { recordFormated = strings.ReplaceAll(record, ".", "-") } else { recordFormated = strings.ReplaceAll(record, ":", "-") } result.Content = fmt.Sprintf(result.Content, recordFormated) } } else if redisErr == redis.Nil { //If strict record NOT in Redis cache & not Reverse //Check for wildcard in Redis cache logrus.Debug("QUERIES : Check for wildcard in redis cache") mainDomainKey := fmt.Sprintf("*%s", entry.Fqdn[strings.Index(entry.Fqdn, "."):]) //Remove the last subdomain redismdKey := fmt.Sprintf("%s--%v", mainDomainKey, entry.Qtype) result, redisErr = redisCheckForRecord(redismdKey, entry) //If none of both check in mysql if redisErr == redis.Nil { //Check for strict record in mysql logrus.Debug("QUERIES : Check for strict record in MSQL") result, sqlErr = sqlCheckForRecord(redisKey, entry.Fqdn, entry) if sqlErr { //Check for wildcard record in mysql logrus.Debug("QUERIES : Check for wildcard in MSQL") result, _ = sqlCheckForRecord(redismdKey, fmt.Sprint(mainDomainKey), entry) } } } return result }