Dustin Decker
14e44db2be
* Remove detectors.IsKnownFalsePositive from detectors * Centralize false positive removal in engine * Don't apply fp filtering on custom regex to preserve previous behavior. * fix empty branch * update excludes * update filtering * Add result flag option and exclude some detectors
81 lines
2.3 KiB
Go
81 lines
2.3 KiB
Go
package github_oauth2
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import (
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"context"
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regexp "github.com/wasilibs/go-re2"
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"strings"
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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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"golang.org/x/oauth2/clientcredentials"
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"golang.org/x/oauth2/github"
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)
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type Scanner struct{ detectors.EndpointSetter }
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// Ensure the Scanner satisfies the interfaces at compile time.
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var _ detectors.Detector = (*Scanner)(nil)
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var (
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// Oauth2 client ID and secret
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oauth2ClientIDPat = regexp.MustCompile(detectors.PrefixRegex([]string{"github"}) + `\b([a-f0-9]{20})\b`)
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oauth2ClientSecretPat = regexp.MustCompile(detectors.PrefixRegex([]string{"github"}) + `\b([a-f0-9]{40})\b`)
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)
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const (
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githubBadVerificationCodeError = "bad_verification_code"
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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{"github"}
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}
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// FromData will find and optionally verify GitHub 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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// Oauth2 client ID and secret
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oauth2ClientIDMatches := oauth2ClientIDPat.FindAllStringSubmatch(dataStr, -1)
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oauth2ClientSecretMatches := oauth2ClientSecretPat.FindAllStringSubmatch(dataStr, -1)
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for _, idMatch := range oauth2ClientIDMatches {
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if len(idMatch) != 2 {
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continue
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}
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for _, secretMatch := range oauth2ClientSecretMatches {
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if len(secretMatch) != 2 {
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continue
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}
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s1 := detectors.Result{
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DetectorType: detectorspb.DetectorType_GitHubOauth2,
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Raw: []byte(idMatch[1]),
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RawV2: []byte(idMatch[1] + secretMatch[1]),
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}
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s1.ExtraData = map[string]string{
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"rotation_guide": "https://howtorotate.com/docs/tutorials/github/",
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}
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config := &clientcredentials.Config{
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ClientID: idMatch[1],
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ClientSecret: secretMatch[1],
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TokenURL: github.Endpoint.TokenURL,
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}
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_, err := config.Token(ctx)
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if err != nil && strings.Contains(err.Error(), githubBadVerificationCodeError) {
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s1.Verified = true
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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
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}
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func (s Scanner) Type() detectorspb.DetectorType {
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return detectorspb.DetectorType_GitHubOauth2
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}
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