trufflesteeeve
2b1c42ceb1
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* Make slack webhook detector regex more specific * fixup - add better body contains check
80 lines
2.1 KiB
Go
80 lines
2.1 KiB
Go
package slackwebhook
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import (
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"context"
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"io"
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"net/http"
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"regexp"
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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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keyPat = regexp.MustCompile(`(https://hooks\.slack\.com/services/T[A-Z0-9]+/B[A-Z0-9]+/[A-Za-z0-9]{23,25})`)
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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{"hooks.slack.com"}
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}
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// FromData will find and optionally verify SlackWebhook 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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matches := keyPat.FindAllStringSubmatch(dataStr, -1)
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for _, match := range matches {
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if len(match) != 2 {
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continue
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}
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resMatch := strings.TrimSpace(match[1])
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s1 := detectors.Result{
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DetectorType: detectorspb.DetectorType_SlackWebhook,
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Raw: []byte(resMatch),
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}
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if verify {
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payload := strings.NewReader(`{"text": ""}`)
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req, err := http.NewRequestWithContext(ctx, "POST", resMatch, 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/json")
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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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bodyBytes, err := io.ReadAll(res.Body)
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if err != nil {
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continue
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}
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body := string(bodyBytes)
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if (res.StatusCode >= 200 && res.StatusCode < 300) || (res.StatusCode == 400 && strings.Contains(body, "no_text")) {
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s1.Verified = true
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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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return results, nil
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}
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func (s Scanner) Type() detectorspb.DetectorType {
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return detectorspb.DetectorType_SlackWebhook
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}
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