Miccah
ad2f9a4b98
* Populate SecretParts on single-part detectors
Adds SecretParts: map[string]string{"key": <secret>} to every detector
package that constructs detectors.Result with a single captured secret
value. This is the single-part half of the SecretParts migration (the
linter's common case, ~695 packages).
* Populate SecretParts on multi-part detectors
129 lines
3.5 KiB
Go
129 lines
3.5 KiB
Go
package dwolla
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import (
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"context"
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b64 "encoding/base64"
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"fmt"
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"io"
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"net/http"
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"strings"
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regexp "github.com/wasilibs/go-re2"
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"github.com/trufflesecurity/trufflehog/v3/pkg/common"
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"github.com/trufflesecurity/trufflehog/v3/pkg/detectors"
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"github.com/trufflesecurity/trufflehog/v3/pkg/pb/detector_typepb"
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)
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type Scanner struct {
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client *http.Client
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detectors.DefaultMultiPartCredentialProvider
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}
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// Ensure the Scanner satisfies the interface at compile time.
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var _ detectors.Detector = (*Scanner)(nil)
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var (
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defaultClient = common.SaneHttpClient()
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// Make sure that your group is surrounded in boundary characters such as below to reduce false positives.
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idPat = regexp.MustCompile(detectors.PrefixRegex([]string{"dwolla"}) + `\b([a-zA-Z-0-9]{50})\b`)
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secretPat = regexp.MustCompile(detectors.PrefixRegex([]string{"dwolla"}) + `\b([a-zA-Z-0-9]{50})\b`)
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)
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// Keywords are used for efficiently pre-filtering chunks.
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// Use identifiers in the secret preferably, or the provider name.
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func (s Scanner) Keywords() []string {
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return []string{"dwolla"}
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}
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func (s Scanner) getClient() *http.Client {
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if s.client != nil {
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return s.client
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}
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return defaultClient
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}
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// FromData will find and optionally verify Dwolla secrets in a given set of bytes.
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func (s Scanner) FromData(ctx context.Context, verify bool, data []byte) (results []detectors.Result, err error) {
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dataStr := string(data)
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uniqueIDs := make(map[string]struct{})
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for _, matches := range idPat.FindAllStringSubmatch(dataStr, -1) {
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uniqueIDs[matches[1]] = struct{}{}
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}
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uniqueSecrets := make(map[string]struct{})
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for _, matches := range secretPat.FindAllStringSubmatch(dataStr, -1) {
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uniqueSecrets[matches[1]] = struct{}{}
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}
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for id := range uniqueIDs {
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for secret := range uniqueSecrets {
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if id == secret {
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continue // Skip if ID and secret are the same.
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}
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s1 := detectors.Result{
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DetectorType: detector_typepb.DetectorType_Dwolla,
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Raw: []byte(id),
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SecretParts: map[string]string{
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"id": id,
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"secret": secret,
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},
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RawV2: []byte(id + secret),
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}
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if verify {
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client := s.getClient()
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isVerified, err := verifyMatch(ctx, client, id, secret)
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s1.Verified = isVerified
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s1.SetVerificationError(err, id, secret)
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}
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results = append(results, s1)
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}
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}
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return results, nil
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}
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func verifyMatch(ctx context.Context, client *http.Client, id, secret string) (bool, error) {
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data := fmt.Sprintf("%s:%s", id, secret)
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encoded := b64.StdEncoding.EncodeToString([]byte(data))
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payload := strings.NewReader("grant_type=client_credentials")
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req, err := http.NewRequestWithContext(ctx, http.MethodPost, "https://api-sandbox.dwolla.com/token", payload)
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if err != nil {
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return false, err
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}
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req.Header.Add("Content-Type", "application/x-www-form-urlencoded")
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req.Header.Add("Authorization", fmt.Sprintf("Basic %s", encoded))
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res, err := client.Do(req)
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if err != nil {
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return false, err
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}
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defer func() {
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_, _ = io.Copy(io.Discard, res.Body)
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_ = res.Body.Close()
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}()
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switch res.StatusCode {
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case http.StatusOK:
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return true, nil
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case http.StatusUnauthorized:
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return false, nil
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default:
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return false, fmt.Errorf("unexpected status code %d", res.StatusCode)
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}
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}
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func (s Scanner) Type() detector_typepb.DetectorType {
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return detector_typepb.DetectorType_Dwolla
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}
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func (s Scanner) Description() string {
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return "Dwolla is a payment services provider that allows businesses to send, receive, and facilitate payments. Dwolla API keys can be used to access and manage these payment services."
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}
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