// Package censys logic
package censys
import (
"bytes"
"context"
"strconv"
jsoniter "github.com/json-iterator/go"
"github.com/projectdiscovery/subfinder/v2/pkg/subscraping"
)
const maxCensysPages = 10
type resultsq struct {
Data []string `json:"parsed.extensions.subject_alt_name.dns_names"`
Data1 []string `json:"parsed.names"`
}
type response struct {
Results []resultsq `json:"results"`
Metadata struct {
Pages int `json:"pages"`
} `json:"metadata"`
}
// Source is the passive scraping agent
type Source struct {
apiKeys []apiKey
}
type apiKey struct {
token string
secret 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.token == "" || randomApiKey.secret == "" {
return
}
currentPage := 1
for {
var request = []byte(`{"query":"` + domain + `", "page":` + strconv.Itoa(currentPage) + `, "fields":["parsed.names","parsed.extensions.subject_alt_name.dns_names"], "flatten":true}`)
resp, err := session.HTTPRequest(
ctx,
"POST",
"https://search.censys.io/api/v1/search/certificates",
"",
map[string]string{"Content-Type": "application/json", "Accept": "application/json"},
bytes.NewReader(request),
subscraping.BasicAuth{Username: randomApiKey.token, Password: randomApiKey.secret},
)
if err != nil {
results <- subscraping.Result{Source: s.Name(), Type: subscraping.Error, Error: err}
session.DiscardHTTPResponse(resp)
return
}
var censysResponse response
err = jsoniter.NewDecoder(resp.Body).Decode(&censysResponse)
if err != nil {
results <- subscraping.Result{Source: s.Name(), Type: subscraping.Error, Error: err}
resp.Body.Close()
return
}
resp.Body.Close()
for _, res := range censysResponse.Results {
for _, part := range res.Data {
results <- subscraping.Result{Source: s.Name(), Type: subscraping.Subdomain, Value: part}
}
for _, part := range res.Data1 {
results <- subscraping.Result{Source: s.Name(), Type: subscraping.Subdomain, Value: part}
}
}
// Exit the censys enumeration if max pages is reached
if currentPage >= censysResponse.Metadata.Pages || currentPage >= maxCensysPages {
break
}
currentPage++
}
}()
return results
}
// Name returns the name of the source
func (s *Source) Name() string {
return "censys"
}
func (s *Source) IsDefault() bool {
return true
}
func (s *Source) HasRecursiveSupport() bool {
return false
}
func (s *Source) NeedsKey() bool {
return true
}
func (s *Source) AddApiKeys(keys []string) {
s.apiKeys = subscraping.CreateApiKeys(keys, func(k, v string) apiKey {
return apiKey{k, v}
})
}