// Package dnsdb logic
package dnsdb
import (
"bufio"
"bytes"
"context"
"fmt"
"strings"
jsoniter "github.com/json-iterator/go"
"github.com/projectdiscovery/subfinder/v2/pkg/subscraping"
)
type dnsdbResponse struct {
Name string `json:"rrname"`
}
// Source is the passive scraping agent
type Source struct {
apiKeys []string
}
// Run function returns all subdomains found with the service
func (s *Source) Run(ctx context.Context, domain string, session *subscraping.Session) <-chan subscraping.Result {
results := make(chan subscraping.Result)
go func() {
defer close(results)
randomApiKey := subscraping.PickRandom(s.apiKeys, s.Name())
if randomApiKey == "" {
return
}
headers := map[string]string{
"X-API-KEY": randomApiKey,
"Accept": "application/json",
"Content-Type": "application/json",
}
resp, err := session.Get(ctx, fmt.Sprintf("https://api.dnsdb.info/lookup/rrset/name/*.%s?limit=1000000000000", domain), "", headers)
if err != nil {
results <- subscraping.Result{Source: s.Name(), Type: subscraping.Error, Error: err}
session.DiscardHTTPResponse(resp)
return
}
scanner := bufio.NewScanner(resp.Body)
for scanner.Scan() {
line := scanner.Text()
if line == "" {
continue
}
var response dnsdbResponse
err = jsoniter.NewDecoder(bytes.NewBufferString(line)).Decode(&response)
if err != nil {
results <- subscraping.Result{Source: s.Name(), Type: subscraping.Error, Error: err}
return
}
results <- subscraping.Result{Source: s.Name(), Type: subscraping.Subdomain, Value: strings.TrimSuffix(response.Name, ".")}
}
resp.Body.Close()
}()
return results
}
// Name returns the name of the source
func (s *Source) Name() string {
return "dnsdb"
}
func (s *Source) IsDefault() bool {
return false
}
func (s *Source) HasRecursiveSupport() bool {
return false
}
func (s *Source) NeedsKey() bool {
return true
}
func (s *Source) AddApiKeys(keys []string) {
s.apiKeys = keys
}