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
100 lines
2.6 KiB
Go
100 lines
2.6 KiB
Go
package telegrambottoken
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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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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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// 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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// https://core.telegram.org/bots#6-botfather
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// thanks https://stackoverflow.com/questions/61868770/tegram-bot-api-token-format
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keyPat = regexp.MustCompile(detectors.PrefixRegex([]string{"telegram", "tgram://"}) + `\b([0-9]{8,10}:[a-zA-Z0-9_-]{35})\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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// Apprise uses the `tgram://` url scheme.
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// https://github.com/caronc/apprise/wiki/Notify_telegram
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return []string{"telegram", "tgram"}
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}
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// FromData will find and optionally verify TelegramBotToken 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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key := strings.TrimSpace(match[1])
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s1 := detectors.Result{
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DetectorType: detectorspb.DetectorType_TelegramBotToken,
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Raw: []byte(key),
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}
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if verify {
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// https://core.telegram.org/bots/api#getme
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req, err := http.NewRequestWithContext(ctx, "GET", "https://api.telegram.org/bot"+key+"/getMe", nil)
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if err != nil {
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continue
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}
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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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if res.StatusCode >= 200 && res.StatusCode < 300 {
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s1.Verified = true
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apiRes := apiResponse{}
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err := json.NewDecoder(res.Body).Decode(&apiRes)
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if err == nil && apiRes.Ok {
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s1.ExtraData = map[string]string{
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"username": apiRes.Result.Username,
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}
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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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return results, nil
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}
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// https://core.telegram.org/bots/api#making-requests
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type apiResponse struct {
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Ok bool `json:"ok"`
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Result *userResponse `json:"result"`
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}
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// https://core.telegram.org/bots/api#user
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type userResponse struct {
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IsBot bool `json:"is_bot"`
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Username string `json:"username"`
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}
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func (s Scanner) Type() detectorspb.DetectorType {
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return detectorspb.DetectorType_TelegramBotToken
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}
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