initial

crtsh.go

@@ -0,0 +1,39 @@
+package assetfinder
+
+import (
+	"encoding/json"
+	"fmt"
+	"io/ioutil"
+	"net/http"
+)
+
+type CrtShResult struct {
+	Name string `json:"name_value"`
+}
+
+type CrtSh struct{}
+
+func (CrtSh) FetchSubDomains(domain string) ([]string, error) {
+	var results []CrtShResult
+
+	resp, err := http.Get(
+		fmt.Sprintf("https://crt.sh/?q=%%25.%s&output=json", domain),
+	)
+	if err != nil {
+		return []string{}, err
+	}
+	defer resp.Body.Close()
+
+	output := make([]string, 0)
+
+	body, _ := ioutil.ReadAll(resp.Body)
+
+	if err := json.Unmarshal(body, &results); err != nil {
+		return []string{}, err
+	}
+
+	for _, res := range results {
+		output = append(output, res.Name)
+	}
+	return output, nil
+}