CringeStudios/dns
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TheArrayser 2025-01-12 14:29:47 +01:00
parent d21f611289
commit f388664482
2 changed files with 35 additions and 0 deletions
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5
main.go
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@ -23,12 +23,17 @@ func (h *dnsHandler) ServeDNS(w dns.ResponseWriter, r *dns.Msg) {
if question.Qtype == dns.TypeCNAME || question.Qtype == dns.TypeA || question.Qtype == dns.TypeAAAA { if question.Qtype == dns.TypeCNAME || question.Qtype == dns.TypeA || question.Qtype == dns.TypeAAAA {
if strings.HasSuffix(question.Name, "prime.cringe-studios.com") || strings.HasSuffix(question.Name, "prime.cringe-studios.com.") { if strings.HasSuffix(question.Name, "prime.cringe-studios.com") || strings.HasSuffix(question.Name, "prime.cringe-studios.com.") {
log.Println("Prime request")
primeAnswer := HandlePrimeNumberChecker(question) primeAnswer := HandlePrimeNumberChecker(question)
log.Println("about to append request: %i", primeAnswer)
if primeAnswer != nil { if primeAnswer != nil {
log.Println("appending")
msg.Answer = append(msg.Answer, primeAnswer) msg.Answer = append(msg.Answer, primeAnswer)
} }
log.Println("finished")
continue continue
} }

30
prime.go
View File

@ -2,6 +2,7 @@ package main
import ( import (
"fmt" "fmt"
"log"
"math/big" "math/big"
"regexp" "regexp"
"strings" "strings"
@ -18,74 +19,102 @@ func IsNumber(stringToCheck string) bool {
} }
func HandlePrimeNumberChecker(question dns.Question) dns.RR { func HandlePrimeNumberChecker(question dns.Question) dns.RR {
log.Println("1")
mainDomainPartindex := strings.LastIndex(question.Name, "prime.cringe-studios.com") mainDomainPartindex := strings.LastIndex(question.Name, "prime.cringe-studios.com")
log.Println("2")
if mainDomainPartindex == 0 || mainDomainPartindex == 1 { if mainDomainPartindex == 0 || mainDomainPartindex == 1 {
// TODO handle ns page part.. maybe send back a CNAME for a page to enter the number // TODO handle ns page part.. maybe send back a CNAME for a page to enter the number
log.Println("3")
return nil return nil
} }
isQuestionPartIndex := strings.LastIndex(question.Name, "is.prime.cringe-studios.com") isQuestionPartIndex := strings.LastIndex(question.Name, "is.prime.cringe-studios.com")
log.Println("4")
if isQuestionPartIndex == 0 || isQuestionPartIndex == 1 { if isQuestionPartIndex == 0 || isQuestionPartIndex == 1 {
log.Println("5")
// TODO handle resource found // TODO handle resource found
return nil return nil
} }
isnotQuestionPartIndex := strings.LastIndex(question.Name, "isnot.prime.cringe-studios.com") isnotQuestionPartIndex := strings.LastIndex(question.Name, "isnot.prime.cringe-studios.com")
log.Println("6")
if isnotQuestionPartIndex == 0 || isnotQuestionPartIndex == 1 { if isnotQuestionPartIndex == 0 || isnotQuestionPartIndex == 1 {
// TODO handle resource found // TODO handle resource found
log.Println("7")
return nil return nil
} }
maybeQuestionPartIndex := strings.LastIndex(question.Name, "maybe.prime.cringe-studios.com") maybeQuestionPartIndex := strings.LastIndex(question.Name, "maybe.prime.cringe-studios.com")
log.Println("8")
if maybeQuestionPartIndex == 0 || maybeQuestionPartIndex == 1 { if maybeQuestionPartIndex == 0 || maybeQuestionPartIndex == 1 {
// TODO handle resource found // TODO handle resource found
log.Println("9")
return nil return nil
} }
mainDomainPart := question.Name[0 : mainDomainPartindex-1] // subtract 1 for the p in prime mainDomainPart := question.Name[0 : mainDomainPartindex-1] // subtract 1 for the p in prime
log.Println("10:" + mainDomainPart)
if !strings.HasSuffix(mainDomainPart, ".") { if !strings.HasSuffix(mainDomainPart, ".") {
// unknown subdomain like 123prime.cringe-studios.com // unknown subdomain like 123prime.cringe-studios.com
log.Println("11")
return nil return nil
} }
mainDomainPart = mainDomainPart[0 : len(mainDomainPart)-2] // subtract 1 to accomodate for the length being one bigger then the last index, and subtract another one for the dot at the end mainDomainPart = mainDomainPart[0 : len(mainDomainPart)-2] // subtract 1 to accomodate for the length being one bigger then the last index, and subtract another one for the dot at the end
log.Println("12:" + mainDomainPart)
if len(mainDomainPart) == 0 { if len(mainDomainPart) == 0 {
// .prime.cringe-studios.com // .prime.cringe-studios.com
log.Println("13")
return nil return nil
} }
firstIsIndex := strings.Index(mainDomainPart, "is.") firstIsIndex := strings.Index(mainDomainPart, "is.")
log.Println("14")
if firstIsIndex == 0 || firstIsIndex == 1 { if firstIsIndex == 0 || firstIsIndex == 1 {
// word "is." found at the beginning of the question.. trim // word "is." found at the beginning of the question.. trim
mainDomainPart = mainDomainPart[len("is.") : len(mainDomainPart)-1] mainDomainPart = mainDomainPart[len("is.") : len(mainDomainPart)-1]
} }
log.Println("15: " + mainDomainPart)
if len(mainDomainPart) == 0 { if len(mainDomainPart) == 0 {
// requested domain was is.prime.cringe-studios.com or something like that... // requested domain was is.prime.cringe-studios.com or something like that...
// TODO // TODO
log.Println("16")
return nil return nil
} }
log.Println("16.5")
if !IsNumber(mainDomainPart) { if !IsNumber(mainDomainPart) {
// TODO return cname to isnot.prime.cringe-studios.com // TODO return cname to isnot.prime.cringe-studios.com
log.Println("17")
return nil return nil
} }
log.Println("18")
bigNumber := new(big.Int) bigNumber := new(big.Int)
fmt.Sscan(mainDomainPart, bigNumber) fmt.Sscan(mainDomainPart, bigNumber)
log.Println("19")
if bigNumber.Cmp(maximumPrimeNumber) == 1 { if bigNumber.Cmp(maximumPrimeNumber) == 1 {
// number is bigger than the maximum limit for the propablyprime function // number is bigger than the maximum limit for the propablyprime function
// TODO return CNAME for maybe.prime.cringe-studios.com // TODO return CNAME for maybe.prime.cringe-studios.com
log.Println("20")
return nil return nil
} }
if bigNumber.ProbablyPrime(20) { if bigNumber.ProbablyPrime(20) {
log.Println("21")
// is prime, because the cases bigger than 2^64-1 have been catched above // is prime, because the cases bigger than 2^64-1 have been catched above
return &dns.CNAME{ return &dns.CNAME{
Hdr: dns.RR_Header{ Hdr: dns.RR_Header{
@ -97,6 +126,7 @@ func HandlePrimeNumberChecker(question dns.Question) dns.RR {
Target: "is.prime.cringe-studios.com.", Target: "is.prime.cringe-studios.com.",
} }
} else { } else {
log.Println("22")
// is not prime // is not prime
return &dns.CNAME{ return &dns.CNAME{
Hdr: dns.RR_Header{ Hdr: dns.RR_Header{