Amaan Ullah
0fa069c12f
* enable errcheck and staticcheck for golangci-lint v2 and resolve all issues * skip lint on intentional reference of deprecated DetectorType values
113 lines
3.4 KiB
Go
113 lines
3.4 KiB
Go
package pubnubpublishkey
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import (
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"context"
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"fmt"
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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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detectors.DefaultMultiPartCredentialProvider
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client *http.Client
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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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pubPat = regexp.MustCompile(`\b(pub-c-[0-9a-z]{8}-[0-9a-z]{4}-[a-z0-9]{4}-[a-z0-9]{4}-[a-z0-9]{12})\b`)
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subPat = regexp.MustCompile(`\b(sub-c-[0-9a-z]{8}-[a-z0-9]{4}-[a-z0-9]{4}-[a-z0-9]{4}-[a-z0-9]{12})\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{"sub-c-"}
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}
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// FromData will find and optionally verify PubNubPublishKey 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 := pubPat.FindAllStringSubmatch(dataStr, -1)
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subMatches := subPat.FindAllStringSubmatch(dataStr, -1)
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for _, match := range matches {
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resMatch := strings.TrimSpace(match[1])
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for _, subMatch := range subMatches {
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ressubMatch := strings.TrimSpace(subMatch[1])
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s1 := detectors.Result{
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DetectorType: detector_typepb.DetectorType_PubNubPublishKey,
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Raw: []byte(resMatch),
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SecretParts: map[string]string{
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"key": resMatch,
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"subscribe_key": ressubMatch,
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},
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RawV2: []byte(resMatch + "/" + ressubMatch),
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}
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if verify {
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client := s.getClient()
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isVerified, verificationErr := verifyPubNub(ctx, client, resMatch, ressubMatch)
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s1.Verified = isVerified
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s1.SetVerificationError(verificationErr, resMatch)
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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) 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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func verifyPubNub(ctx context.Context, client *http.Client, resMatch, ressubMatch string) (bool, error) {
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req, err := http.NewRequestWithContext(ctx, "GET", "https://ps.pndsn.com/signal/"+resMatch+"/"+ressubMatch+"/0/ch1/0/%22typing_on%22?uuid=user-123", nil)
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if err != nil {
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return false, err
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}
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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() { _ = res.Body.Close() }()
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if res.StatusCode >= 200 && res.StatusCode < 300 {
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return true, nil
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} else if res.StatusCode != 400 && res.StatusCode != 403 {
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// 403 is suggested by the API docs (https://www.pubnub.com/docs/sdks/rest-api/send-signal-to-channel)
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// 400 is what actually seems to be coming back for invalid credentials
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return false, fmt.Errorf("unexpected HTTP response status %d", res.StatusCode)
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}
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return false, nil
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}
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func (s Scanner) Type() detector_typepb.DetectorType {
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return detector_typepb.DetectorType_PubNubPublishKey
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}
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func (s Scanner) Description() string {
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return "PubNub is a real-time communication platform that provides APIs for sending and receiving messages. Publish keys are used to send messages to channels, while subscribe keys are used to receive messages from channels."
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}
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