ahrav
e44802a31d
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* update detectors to use go-re regex library replacement * update go mod and sum * add tests with invalid utf-8 * revert
98 lines
2.8 KiB
Go
98 lines
2.8 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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regexp "github.com/wasilibs/go-re2"
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"net/http"
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"strings"
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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/detectorspb"
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)
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type Scanner struct{}
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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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client = 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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// 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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idMatches := idPat.FindAllStringSubmatch(dataStr, -1)
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secretMatches := secretPat.FindAllStringSubmatch(dataStr, -1)
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for _, match := range idMatches {
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if len(match) != 2 {
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continue
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}
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idMatch := strings.TrimSpace(match[1])
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for _, secret := range secretMatches {
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if len(secret) != 2 {
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continue
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}
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secretMatch := strings.TrimSpace(secret[1])
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s1 := detectors.Result{
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DetectorType: detectorspb.DetectorType_Dwolla,
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Raw: []byte(idMatch),
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RawV2: []byte(idMatch + secretMatch),
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}
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if verify {
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data := fmt.Sprintf("%s:%s", idMatch, secretMatch)
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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, "POST", "https://api-sandbox.dwolla.com/token", payload)
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if err != nil {
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continue
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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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defer res.Body.Close()
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if res.StatusCode >= 200 && res.StatusCode < 300 {
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s1.Verified = true
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} else {
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// This function will check false positives for common test words, but also it will make sure the key appears 'random' enough to be a real key.
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if detectors.IsKnownFalsePositive(idMatch, detectors.DefaultFalsePositives, true) {
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continue
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}
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}
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}
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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 (s Scanner) Type() detectorspb.DetectorType {
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return detectorspb.DetectorType_Dwolla
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}
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