add subdomaincenter

v2/pkg/passive/sources.go

@@ -42,6 +42,7 @@ import (
 	"github.com/projectdiscovery/subfinder/v2/pkg/subscraping/sources/securitytrails"
 	"github.com/projectdiscovery/subfinder/v2/pkg/subscraping/sources/shodan"
 	"github.com/projectdiscovery/subfinder/v2/pkg/subscraping/sources/sitedossier"
+	"github.com/projectdiscovery/subfinder/v2/pkg/subscraping/sources/subdomaincenter"
 	"github.com/projectdiscovery/subfinder/v2/pkg/subscraping/sources/threatbook"
 	"github.com/projectdiscovery/subfinder/v2/pkg/subscraping/sources/virustotal"
 	"github.com/projectdiscovery/subfinder/v2/pkg/subscraping/sources/waybackarchive"
@@ -93,6 +94,7 @@ var AllSources = [...]subscraping.Source{
 	// &threatminer.Source{}, // failing  api
 	// &reconcloud.Source{}, // failing due to cloudflare bot protection
 	&builtwith.Source{},
+	&subdomaincenter.Source{},
 }
 
 var sourceWarnings = mapsutil.NewSyncLockMap[string, string](

v2/pkg/passive/sources_test.go

@@ -53,6 +53,7 @@ var (
 		// "threatminer",
 		// "reconcloud",
 		"builtwith",
+		"subdomaincenter",
 	}
 
 	expectedDefaultSources = []string{
@@ -88,6 +89,7 @@ var (
 		// "threatminer",
 		// "reconcloud",
 		"builtwith",
+		"subdomaincenter",
 	}
 
 	expectedDefaultRecursiveSources = []string{

v2/pkg/runner/options.go

@@ -257,4 +257,5 @@ var defaultRateLimits = []string{
 	"netlas=1/s",
 	// "gitlab=2/s",
 	"github=83/m",
+	"subdomaincenter=2/m",
 }

v2/pkg/subscraping/sources/subdomaincenter/subdomaincenter.go

@@ -0,0 +1,87 @@
+// Package subdomaincenter logic
+package subdomaincenter
+
+import (
+	"context"
+	"fmt"
+	"time"
+
+	jsoniter "github.com/json-iterator/go"
+
+	"github.com/projectdiscovery/subfinder/v2/pkg/subscraping"
+)
+
+// Source is the passive scraping agent
+type Source struct {
+	timeTaken time.Duration
+	errors    int
+	results   int
+}
+
+// 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)
+	s.errors = 0
+	s.results = 0
+
+	go func() {
+		defer func(startTime time.Time) {
+			s.timeTaken = time.Since(startTime)
+			close(results)
+		}(time.Now())
+
+		resp, err := session.SimpleGet(ctx, fmt.Sprintf("https://api.subdomain.center/?domain=%s", domain))
+		if err != nil {
+			results <- subscraping.Result{Source: s.Name(), Type: subscraping.Error, Error: err}
+			s.errors++
+			session.DiscardHTTPResponse(resp)
+			return
+		}
+
+		var subdomains []string
+		err = jsoniter.NewDecoder(resp.Body).Decode(&subdomains)
+		if err != nil {
+			results <- subscraping.Result{Source: s.Name(), Type: subscraping.Error, Error: err}
+			s.errors++
+			resp.Body.Close()
+			return
+		}
+		resp.Body.Close()
+
+		for _, subdomain := range subdomains {
+			results <- subscraping.Result{Source: s.Name(), Type: subscraping.Subdomain, Value: subdomain}
+			s.results++
+		}
+	}()
+
+	return results
+}
+
+// Name returns the name of the source
+func (s *Source) Name() string {
+	return "subdomaincenter"
+}
+
+func (s *Source) IsDefault() bool {
+	return true
+}
+
+func (s *Source) HasRecursiveSupport() bool {
+	return false
+}
+
+func (s *Source) NeedsKey() bool {
+	return false
+}
+
+func (s *Source) AddApiKeys(_ []string) {
+	// no key needed
+}
+
+func (s *Source) Statistics() subscraping.Statistics {
+	return subscraping.Statistics{
+		Errors:    s.errors,
+		Results:   s.results,
+		TimeTaken: s.timeTaken,
+	}
+}