142 lines
4.1 KiB
Go
142 lines
4.1 KiB
Go
package twilio
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import (
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"context"
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"encoding/json"
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"fmt"
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"io"
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"maps"
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"net/http"
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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 = detectors.NewClientWithDedup(common.RetryableHTTPClient())
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sidPat = regexp.MustCompile(`\bAC[0-9a-f]{32}\b`)
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keyPat = regexp.MustCompile(`\b[0-9a-f]{32}\b`)
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)
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type serviceResponse struct {
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Services []service `json:"services"`
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}
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type service struct {
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FriendlyName string `json:"friendly_name"` // friendly name of a service
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SID string `json:"sid"` // object id of service
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AccountSID string `json:"account_sid"` // account sid
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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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// 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{"sid", "twilio"}
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}
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// FromData will find and optionally verify Twilio 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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uniqueKeys := make(map[string]struct{})
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for _, k := range keyPat.FindAllString(dataStr, -1) {
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uniqueKeys[k] = struct{}{}
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}
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uniqueSIDs := make(map[string]struct{})
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for _, s := range sidPat.FindAllString(dataStr, -1) {
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uniqueSIDs[s] = struct{}{}
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}
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for sid := range uniqueSIDs {
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for key := range uniqueKeys {
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s1 := detectors.Result{
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DetectorType: detector_typepb.DetectorType_Twilio,
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Raw: []byte(sid),
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RawV2: []byte(sid + key),
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Redacted: sid,
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SecretParts: map[string]string{"key": key, "sid": sid},
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}
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s1.ExtraData = map[string]string{
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"rotation_guide": "https://howtorotate.com/docs/tutorials/twilio/",
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}
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if verify {
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extraData, isVerified, verificationErr := verifyTwilio(ctx, s.getClient(), key, sid)
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s1.Verified = isVerified
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s1.SetVerificationError(verificationErr)
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maps.Copy(s1.ExtraData, extraData)
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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() detector_typepb.DetectorType {
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return detector_typepb.DetectorType_Twilio
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}
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func (s Scanner) Description() string {
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return "Twilio is a cloud communications platform that allows software developers to programmatically make and receive phone calls, send and receive text messages, and perform other communication functions using its web service APIs."
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}
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func verifyTwilio(ctx context.Context, client *http.Client, key, sid string) (map[string]string, bool, error) {
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req, err := http.NewRequestWithContext(ctx, "GET", "https://verify.twilio.com/v2/Services", nil)
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if err != nil {
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return nil, false, err
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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("Accept", "*/*")
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req.SetBasicAuth(sid, key)
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resp, err := detectors.DoWithDedup(client, detector_typepb.DetectorType_Twilio, sid+key, req)
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if err != nil {
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return nil, false, err
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}
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defer func() {
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_, _ = io.Copy(io.Discard, resp.Body)
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_ = resp.Body.Close()
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}()
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switch resp.StatusCode {
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case http.StatusOK:
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extraData := make(map[string]string)
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var serviceResponse serviceResponse
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if err := json.NewDecoder(resp.Body).Decode(&serviceResponse); err == nil && len(serviceResponse.Services) > 0 { // no error in parsing and have at least one service
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service := serviceResponse.Services[0]
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extraData["friendly_name"] = service.FriendlyName
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extraData["account_sid"] = service.AccountSID
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}
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return extraData, true, nil
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case http.StatusUnauthorized, http.StatusForbidden:
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return nil, false, nil
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default:
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return nil, false, fmt.Errorf("unexpected HTTP response status %d", resp.StatusCode)
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}
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}
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