added AlienVault source

alienvault.go

@@ -0,0 +1,29 @@
+package main
+
+import (
+	"fmt"
+)
+
+type PassiveDNS struct {
+	PassiveDNS []struct {
+		Hostname string `json:"hostname"`
+	} `json:"passive_dns"`
+}
+
+func fetchAlienVault(domain string) ([]string, error) {
+	out := make([]string, 0)
+
+	fetchURL := fmt.Sprintf("https://otx.alienvault.com/api/v1/indicators/domain/%s/passive_dns", domain)
+
+	var pdns PassiveDNS
+
+	err := fetchJSON(fetchURL, &pdns)
+	if err != nil {
+		return out, err
+	}
+	for _, dns := range pdns.PassiveDNS {
+		out = append(out, dns.Hostname)
+	}
+
+	return out, nil
+}

main.go

@@ -50,6 +50,7 @@ func main() {
 		fetchRiskIq,
 		fetchRiddler,
 		fetchDnsSpy,
+		fetchAlienVault,
 	}
 
 	// optional add in wayback