Detector-Competition-Feat: Add InstaMojo Payment Detector (#1905)

pkg/detectors/instamojo/instamojo.go

@@ -0,0 +1,105 @@
+package instamojo
+
+import (
+	"context"
+	"fmt"
+	"io"
+	"net/http"
+	"regexp"
+	"strings"
+
+	"github.com/trufflesecurity/trufflehog/v3/pkg/common"
+	"github.com/trufflesecurity/trufflehog/v3/pkg/detectors"
+	"github.com/trufflesecurity/trufflehog/v3/pkg/pb/detectorspb"
+)
+
+type Scanner struct {
+	client *http.Client
+}
+
+// Ensure the Scanner satisfies the interface at compile time.
+var _ detectors.Detector = (*Scanner)(nil)
+
+var (
+	defaultClient = common.SaneHttpClient()
+	// Make sure that your group is surrounded in boundary characters such as below to reduce false positives.
+	//KeyPat is client_id
+	keyPat    = regexp.MustCompile(detectors.PrefixRegex([]string{"instamojo"}) + `\b([0-9a-zA-Z]{40})\b`)
+	//Secretpat is Client_secret
+	secretPat = regexp.MustCompile(detectors.PrefixRegex([]string{"instamojo"}) + `\b([0-9a-zA-Z]{128})\b`)
+)
+
+// Keywords are used for efficiently pre-filtering chunks.
+// Use identifiers in the secret preferably, or the provider name.
+func (s Scanner) Keywords() []string {
+	return []string{"instamojo"}
+}
+
+// FromData will find and optionally verify Instamojo secrets in a given set of bytes.
+func (s Scanner) FromData(ctx context.Context, verify bool, data []byte) (results []detectors.Result, err error) {
+	dataStr := string(data)
+
+	secretMatches := secretPat.FindAllStringSubmatch(dataStr, -1)
+	clientIdmatches := keyPat.FindAllStringSubmatch(dataStr, -1)
+
+	for _, match := range secretMatches {
+		if len(match) != 2 {
+			continue
+		}
+		resSecret := strings.TrimSpace(match[1])
+
+		for _, clientIdMatch := range clientIdmatches {
+			if len(clientIdMatch) != 2 {
+				continue
+			}
+			resClientId := strings.TrimSpace(clientIdMatch[1])
+
+			s1 := detectors.Result{
+				DetectorType: detectorspb.DetectorType_Instamojo,
+				Raw:          []byte(resClientId),
+			}
+
+			if verify {
+				client := s.client
+				if client == nil {
+					client = defaultClient
+				}
+				payload := strings.NewReader("grant_type=client_credentials&client_id=" + resClientId + "&client_secret=" + resSecret)
+
+				req, err := http.NewRequestWithContext(ctx, "POST", "https://api.instamojo.com/oauth2/token/", payload)
+				if err != nil {
+					continue
+				}
+				req.Header.Add("Content-Type", "application/x-www-form-urlencoded")
+				res, err := client.Do(req)
+				if err == nil {
+					defer res.Body.Close()
+					bodyBytes, err := io.ReadAll(res.Body)
+					if err != nil {
+						continue
+					}
+					body := string(bodyBytes)
+					if (res.StatusCode >= 200 && res.StatusCode < 300) && strings.Contains(body, "access_token") {
+						s1.Verified = true
+					} else {
+						s1.VerificationError = fmt.Errorf("unexpected HTTP response status %d", res.StatusCode)
+					}
+				} else {
+					s1.VerificationError = err
+				}
+			}
+
+			if !s1.Verified && detectors.IsKnownFalsePositive(string(s1.Raw), detectors.DefaultFalsePositives, true) {
+				continue
+			}
+
+			results = append(results, s1)
+		}
+	}
+
+	return results, nil
+}
+
+func (s Scanner) Type() detectorspb.DetectorType {
+	return detectorspb.DetectorType_Instamojo
+}

pkg/detectors/instamojo/instamojo_test.go

@@ -0,0 +1,124 @@
+//go:build detectors
+// +build detectors
+
+package instamojo
+
+import (
+	"context"
+	"fmt"
+	"testing"
+	"time"
+
+	"github.com/kylelemons/godebug/pretty"
+	"github.com/trufflesecurity/trufflehog/v3/pkg/detectors"
+
+	"github.com/trufflesecurity/trufflehog/v3/pkg/common"
+	"github.com/trufflesecurity/trufflehog/v3/pkg/pb/detectorspb"
+)
+
+func TestInstamojo_FromChunk(t *testing.T) {
+	ctx, cancel := context.WithTimeout(context.Background(), time.Second*5)
+	defer cancel()
+	testSecrets, err := common.GetSecret(ctx, "trufflehog-testing", "detectors5")
+	if err != nil {
+		t.Fatalf("could not get test secrets from GCP: %s", err)
+	}
+	id := testSecrets.MustGetField("INSTAMOJO_CLIENT_ID")
+	secret := testSecrets.MustGetField("INSTAMOJO_SECRET")
+	inactiveSecret := testSecrets.MustGetField("INSTAMOJO_INACTIVE")
+
+	type args struct {
+		ctx    context.Context
+		data   []byte
+		verify bool
+	}
+	tests := []struct {
+		name                string
+		s                   Scanner
+		args                args
+		want                []detectors.Result
+		wantErr             bool
+		wantVerificationErr bool
+	}{
+		{
+			name: "found, verified",
+			s:    Scanner{},
+			args: args{
+				ctx:    context.Background(),
+				data:   []byte(fmt.Sprintf("You can find a instamojo secret %s within id %s", secret, id)),
+				verify: true,
+			},
+			want: []detectors.Result{
+				{
+					DetectorType: detectorspb.DetectorType_Instamojo,
+					Verified:     true,
+				},
+			},
+			wantErr:             false,
+			wantVerificationErr: false,
+		},
+		{
+			name: "found, unverified",
+			s:    Scanner{},
+			args: args{
+				ctx:    context.Background(),
+				data:   []byte(fmt.Sprintf("You can find a instamojo secret %s within but not valid, within id %s", inactiveSecret, id)), // the secret would satisfy the regex but not pass validation
+				verify: true,
+			},
+			want: []detectors.Result{
+				{
+					DetectorType: detectorspb.DetectorType_Instamojo,
+					VerificationError: fmt.Errorf("unexpected HTTP response status 401"),
+				},
+			},
+			wantErr:             false,
+			wantVerificationErr: true,
+		},
+		{
+			name: "not found",
+			s:    Scanner{},
+			args: args{
+				ctx:    context.Background(),
+				data:   []byte("You cannot find the secret within"),
+				verify: true,
+			},
+			want: nil,
+			wantErr:             false,
+			wantVerificationErr: true,
+		},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			got, err := tt.s.FromData(tt.args.ctx, tt.args.verify, tt.args.data)
+			if (err != nil) != tt.wantErr {
+				t.Errorf("Instamojo.FromData() error = %v, wantErr %v", err, tt.wantErr)
+				return
+			}
+			for i := range got {
+				if len(got[i].Raw) == 0 {
+					t.Fatalf("no raw secret present: \n %+v", got[i])
+				}
+				got[i].Raw = nil
+			}
+			if diff := pretty.Compare(got, tt.want); diff != "" {
+				t.Errorf("Instamojo.FromData() %s diff: (-got +want)\n%s", tt.name, diff)
+			}
+		})
+	}
+}
+
+func BenchmarkFromData(benchmark *testing.B) {
+	ctx := context.Background()
+	s := Scanner{}
+	for name, data := range detectors.MustGetBenchmarkData() {
+		benchmark.Run(name, func(b *testing.B) {
+			b.ResetTimer()
+			for n := 0; n < b.N; n++ {
+				_, err := s.FromData(ctx, false, data)
+				if err != nil {
+					b.Fatal(err)
+				}
+			}
+		})
+	}
+}

proto/detectors.proto

@@ -949,6 +949,7 @@ enum DetectorType {
   Privacy = 938;
   IPInfo = 939;
   Ip2location = 940;
+  Instamojo = 941;
 }
 
 message Result {