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
113 lines
3.4 KiB
Go
113 lines
3.4 KiB
Go
package docusign
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import (
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"context"
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"encoding/base64"
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"fmt"
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"github.com/go-errors/errors"
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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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type Response struct {
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AccessToken string `json:"access_token"`
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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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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{"integration", "id"}) + common.UUIDPattern)
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secretPat = regexp.MustCompile(detectors.PrefixRegex([]string{"secret"}) + common.UUIDPattern)
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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{"docusign"}
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}
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// FromData will find and optionally verify Docusign 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 _, idMatch := range idMatches {
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if len(idMatch) != 2 {
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continue
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}
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resIDMatch := strings.TrimSpace(idMatch[1])
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for _, secretMatch := range secretMatches {
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if len(secretMatch) != 2 {
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continue
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}
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resSecretMatch := strings.TrimSpace(secretMatch[1])
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s1 := detectors.Result{
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DetectorType: detectorspb.DetectorType_Docusign,
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Raw: []byte(resIDMatch),
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Redacted: resIDMatch,
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RawV2: []byte(resIDMatch + resSecretMatch),
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}
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// Verify client id and secret pair by using an *undocumented* client_credentials grant type on the oauth2 endpoint.
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// If verifier breaks in the future, confirm that the oauth2 endpoint is still accepting the client_credentials grant type.
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if verify {
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req, err := http.NewRequestWithContext(ctx, "POST", "https://account-d.docusign.com/oauth/token?grant_type=client_credentials", nil)
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if err != nil {
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continue
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}
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encodedCredentials := base64.StdEncoding.EncodeToString([]byte(fmt.Sprintf("%s:%s", resIDMatch, resSecretMatch)))
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req.Header.Add("Accept", "application/vnd.docusign+json; version=3")
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req.Header.Add("Authorization", fmt.Sprintf("Basic %s", encodedCredentials))
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res, err := client.Do(req)
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if err != nil {
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return nil, errors.WrapPrefix(err, "Error making request", 0)
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}
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verifiedBodyResponse, err := common.ResponseContainsSubstring(res.Body, "ey")
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res.Body.Close()
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if err != nil {
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return nil, err
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}
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if err == nil {
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if res.StatusCode >= 200 && res.StatusCode < 300 && verifiedBodyResponse {
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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(resIDMatch, 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_Docusign
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}
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