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simple_dns_tests.cpp
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#include "Dns.hpp"
int main(){
/*
** Request Example:
** Query:
** Name (www.facebook.com) Type (A) Class (IN)
*/
uint8_t package_request_1[] = {
0xf9, 0xc1, 0x01, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x03, 0x77, 0x77,
0x77, 0x08, 0x66, 0x61, 0x63, 0x65, 0x62, 0x6f, 0x6f, 0x6b, 0x03, 0x63, 0x6f, 0x6d, 0x00,
0x00, 0x01, 0x00, 0x01 };
dns::Package PackageRequest1(package_request_1);
PackageRequest1.prettyPrint();
/*
** Request Example:
** Query:
** Name (www.facebook.com) Type (CNAME) Class (IN)
*/
uint8_t package_request_2[] = {
0x76, 0x06, 0x01, 0x00, 0x00, 0x01, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x03, 0x77, 0x77,
0x77, 0x08, 0x66, 0x61, 0x63, 0x65, 0x62, 0x6f, 0x6f, 0x6b, 0x03, 0x63, 0x6f, 0x6d, 0x00,
0x00, 0x05, 0x00, 0x01 };
dns::Package PackageRequest2(package_request_2);
PackageRequest2.prettyPrint();
/*
** Response Example:
** Query:
** Name (www.facebook.com) Type (A) Class (IN)
** Answer:
** Name (www.facebook.com) Type (CNAME) Class (IN) TTL (3238) CNAME (star-mini.c10r.facebook.com)
** Name (star-mini.c10r.facebook.com) Type (A) Class (IN) TTL (21) A (157.240.14.35)
*/
uint8_t package_response_1[] = { 0xf9, 0xc1, 0x81, 0x80, 0x00, 0x01, 0x00, 0x02, 0x00, 0x00, 0x00, 0x00,
0x03, 0x77, 0x77, 0x77, 0x08, 0x66, 0x61, 0x63, 0x65, 0x62, 0x6f, 0x6f, 0x6b, 0x03, 0x63,
0x6f, 0x6d, 0x00, 0x00, 0x01, 0x00, 0x01, 0xc0, 0x0c, 0x00, 0x05, 0x00, 0x01, 0x00, 0x00,
0x0c, 0xa6, 0x00, 0x11, 0x09, 0x73, 0x74, 0x61, 0x72, 0x2d, 0x6d, 0x69, 0x6e, 0x69, 0x04,
0x63, 0x31, 0x30, 0x72, 0xc0, 0x10, 0xc0, 0x2e, 0x00, 0x01, 0x00, 0x01, 0x00, 0x00, 0x00,
0x15, 0x00, 0x04, 0x9d, 0xf0, 0x0e, 0x23 };
dns::Package PackageResponse1(package_response_1);
PackageResponse1.prettyPrint();
/*
** Response Example:
** Query:
** Name (www.facebook.com) Type (CNAME) Class (IN)
** Answer:
** Name (www.facebook.com) Type (CNAME) Class (IN) TTL (2422) CNAME (star-mini.c10r.facebook.com)
**
*/
uint8_t package_response_2[] = {
0x76, 0x06, 0x81, 0x80, 0x00, 0x01, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x03, 0x77, 0x77,
0x77, 0x08, 0x66, 0x61, 0x63, 0x65, 0x62, 0x6f, 0x6f, 0x6b, 0x03, 0x63, 0x6f, 0x6d, 0x00,
0x00, 0x05, 0x00, 0x01, 0xc0, 0x0c, 0x00, 0x05, 0x00, 0x01, 0x00, 0x00, 0x09, 0x76, 0x00,
0x11, 0x09, 0x73, 0x74, 0x61, 0x72, 0x2d, 0x6d, 0x69, 0x6e, 0x69, 0x04, 0x63, 0x31, 0x30,
0x72, 0xc0, 0x10 };
dns::Package PackageResponse2(package_response_2);
PackageResponse2.prettyPrint();
/*
** Create Package Question: Name (www.site1.com) Type (A), Class (IN),
*/
dns::Question QuestionSite1("www.site1.com", dns::Package::A_Type, dns::Package::IN_Class);
dns::Package PackageSite1(0x0111);
PackageSite1.addQuestion(QuestionSite1);
PackageSite1.prettyPrint();
/*
** Create Package Question: Name (www.site1.com) Type (CNAME), Class (IN),
*/
dns::Question QuestionSite2("www.site2.com", dns::Package::CNAME_Type, dns::Package::IN_Class);
dns::Package PackageSite2(0x0222);
PackageSite2.addQuestion(QuestionSite2);
PackageSite2.prettyPrint();
/*
** Create Package Response: Name (www.site2.com) Type (CNAME), Class (IN),
*/
dns::Answer* answerSite1 = new dns::A_Answer("www.site1.com", dns::Package::A_Type, dns::Package::IN_Class, 60);
answerSite1->setRData(192,168,1,1);
dns::Package PackageResponseSite1(0x0222);
PackageResponseSite1.addQuestion(QuestionSite1);
PackageResponseSite1.addAnswer(answerSite1);
PackageResponseSite1.setFlagQR(dns::Package::QR_Response);
PackageResponseSite1.prettyPrint();
/*
** Create Package Response: Name (www.site2.com) Type (CNAME), Class (IN),
*/
dns::Answer* answerSite2 = new dns::CNAME_Answer("www.site2.com", dns::Package::CNAME_Type, dns::Package::IN_Class, 60);
answerSite2->setRData("alias.s01.site2.com");
dns::Package PackageResponseSite2(0x0222);
PackageResponseSite2.addQuestion(QuestionSite2);
PackageResponseSite2.addAnswer(answerSite2);
PackageResponseSite2.setFlagQR(dns::Package::QR_Response);
PackageResponseSite2.prettyPrint();
/*
** Test Cache
*/
dns::Cache cache;
/*
** This creates A registers for every host in /etc/hosts
** Example: "172.20.197.15 pms.gocloud1.com"
*/
cache.load("/etc/hosts");
/*
** Caching QuenstionSite1 and answerSite1.
*/
cache.set(QuestionSite1, PackageResponseSite1.getAnswers());
std::optional<std::vector<dns::Answer*>> res1 = cache.get(QuestionSite1);
std::optional<std::vector<dns::Answer*>> res2 = cache.get(QuestionSite2);
if(res1){
std::vector<dns::Answer*> ans = *res1;
std::cout << ans[0]->rDataToStr() << std::endl;
}else
std::cout << "QuestionSite1 not found" << std::endl;
if(res2){
std::vector<dns::Answer*> ans = *res2;
std::cout << (ans[0])->rDataToStr() << std::endl;
}else
std::cout << "QuestionSite2 not found" << std::endl;
/*
** Resolver
*/
dns::Question QuestionGoogle("www.google.com", dns::Package::A_Type, dns::Package::IN_Class);
dns::Package PackageGoogle(0x0111);
PackageGoogle.addQuestion(QuestionGoogle);
PackageGoogle.prettyPrint();
dns::Resolver resolver(cache);
resolver.resolve(PackageGoogle);
PackageGoogle.prettyPrint();
/*
** Checking if www.google.com is cached.
*/
dns::Question QuestionGoogle2("www.google.com", dns::Package::A_Type, dns::Package::IN_Class);
std::optional<std::vector<dns::Answer*>> res3 = cache.get(QuestionGoogle2);
if(res3){
std::vector<dns::Answer*> ans = *res3;
std::cout << "Google found un cache :)" << std::endl;
std::cout << (ans[0])->rDataToStr() << std::endl;
}else{
std::cout << "Google not found in Cache:(" << std::endl;
}
}