trufflehog/pkg/detectors/guru/guru.go
2022-01-19 14:27:31 -08:00

89 lines
2.5 KiB
Go

package guru
import (
"context"
"fmt"
// "log"
b64 "encoding/base64"
"regexp"
"strings"
"net/http"
"github.com/trufflesecurity/trufflehog/pkg/common"
"github.com/trufflesecurity/trufflehog/pkg/detectors"
"github.com/trufflesecurity/trufflehog/pkg/pb/detectorspb"
)
type Scanner struct{}
// Ensure the Scanner satisfies the interface at compile time
var _ detectors.Detector = (*Scanner)(nil)
var (
client = common.SaneHttpClient()
//Make sure that your group is surrounded in boundry characters such as below to reduce false positives
unamePat = regexp.MustCompile(detectors.PrefixRegex([]string{"guru"}) + `\b([a-zA-Z0-9]{3,20}@[a-zA-Z0-9]{2,12}.[a-zA-Z0-9]{2,5})\b`)
keyPat = regexp.MustCompile(detectors.PrefixRegex([]string{"guru"}) + `\b([a-z0-9]{8}-[a-z0-9]{4}-[a-z0-9]{4}-[a-z0-9]{4}-[a-z0-9]{12})\b`)
)
// Keywords are used for efficiently pre-filtering chunks.
// Use identifiers in the secret preferably, or the provider name.
func (s Scanner) Keywords() []string {
return []string{"guru"}
}
// FromData will find and optionally verify Guru secrets in a given set of bytes.
func (s Scanner) FromData(ctx context.Context, verify bool, data []byte) (results []detectors.Result, err error) {
dataStr := string(data)
unameMatches := unamePat.FindAllStringSubmatch(dataStr, -1)
keyMatches := keyPat.FindAllStringSubmatch(dataStr, -1)
for _, match := range unameMatches {
if len(match) != 2 {
continue
}
unameMatch := strings.TrimSpace(match[1])
for _, secret := range keyMatches {
if len(secret) != 2 {
continue
}
keyMatch := strings.TrimSpace(secret[1])
s1 := detectors.Result{
DetectorType: detectorspb.DetectorType_Guru,
Raw: []byte(unameMatch),
}
if verify {
data := fmt.Sprintf("%s:%s", unameMatch, keyMatch)
encoded := b64.StdEncoding.EncodeToString([]byte(data))
req, _ := http.NewRequest("GET", "https://api.getguru.com/api/v1/teams/teamId/stats", nil)
req.Header.Add("Authorization", fmt.Sprintf("Basic %s", encoded))
res, err := client.Do(req)
if err == nil {
defer res.Body.Close()
if res.StatusCode >= 200 && res.StatusCode < 300 {
s1.Verified = true
} else {
//This function will check false positives for common test words, but also it will make sure the key appears 'random' enough to be a real key
if detectors.IsKnownFalsePositive(keyMatch, detectors.DefaultFalsePositives, true) {
continue
}
}
}
}
results = append(results, s1)
}
}
return detectors.CleanResults(results), nil
}