checker: add resolver ping test

checker/checker.go

@@ -522,6 +522,21 @@ func studentsChecker() {
 					return
 				}
 
+				// PingResolver
+				if tunnel_version == 3 {
+					tmp := strings.Split(stdIP, ":")
+					tmp[len(tmp)-1] = "2"
+					stdResolverIP := strings.Join(tmp, ":")
+					go check_ping(stdResolverIP, func(_ *ping.Packet) {
+						if verbose {
+							log.Printf("%s resolver PONG", std.Login)
+						}
+						if _, err := std.UnlockChallenge(CheckMap[tunnel_version][PingResolver], ""); err != nil {
+							log.Printf("Unable to register challenge for %s: %s\n", std.Login, err.Error())
+						}
+					})
+				}
+
 				dnsIP := stdIP
 				var glueErr error
 				// Is GLUE defined?
@@ -636,11 +651,11 @@ func studentsChecker() {
 					if verbose {
 						log.Printf("%s just unlocked HTTP IP (without DNS) challenge\n", std.Login)
 					}
-					if _, err := std.UnlockChallenge(100*(tunnel_version-1)+0, ""); err != nil {
+					if _, err := std.UnlockChallenge(CheckMap[tunnel_version][HTTPonIP], ""); err != nil {
 						log.Printf("Unable to register challenge for %s: %s\n", std.Login, err.Error())
 					}
 				} else {
-					std.RegisterChallengeError(100*(tunnel_version-1)+0, err)
+					std.RegisterChallengeError(CheckMap[tunnel_version][HTTPonIP], err)
 					if verbose {
 						log.Printf("%s and HTTP IP (without DNS): %s\n", std.Login, err)
 					}

checker/checks.go

@@ -0,0 +1,47 @@
+package main
+
+type AdlinTest int
+
+const (
+	HTTPonIP AdlinTest = iota
+	HTTPonAssociatedDomain
+	HTTPSonAssociatedDomain
+	DNSDelegation
+	HTTPonDelegatedDomain
+	HTTPSonDelegatedDomain
+	Matrix
+	SNI
+	DNSSEC
+	PingResolver
+	DHCPonRH
+	DHCPonGuests
+	RHaccessNews
+	RHaccessNet
+	GuestNet
+)
+
+var CheckMap = map[int]map[AdlinTest]int{
+	2: map[AdlinTest]int{
+		HTTPonIP:                100,
+		HTTPonAssociatedDomain:  101,
+		HTTPSonAssociatedDomain: 102,
+		DNSDelegation:           103,
+		HTTPonDelegatedDomain:   104,
+		HTTPSonDelegatedDomain:  105,
+		Matrix:                  106,
+		DNSSEC:                  107,
+	},
+	3: map[AdlinTest]int{
+		PingResolver:           200,
+		HTTPonIP:               201,
+		DNSDelegation:          203,
+		HTTPonDelegatedDomain:  204,
+		HTTPSonDelegatedDomain: 205,
+		Matrix:                 206,
+		DHCPonRH:               208,
+		DHCPonGuests:           211,
+		RHaccessNews:           209,
+		RHaccessNet:            210,
+		GuestNet:               212,
+	},
+}