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
111 lines
2.9 KiB
Go
111 lines
2.9 KiB
Go
package azurebatch
|
|
|
|
import (
|
|
"context"
|
|
"crypto/hmac"
|
|
"crypto/sha256"
|
|
"encoding/base64"
|
|
"fmt"
|
|
"net/http"
|
|
"strings"
|
|
"time"
|
|
|
|
regexp "github.com/wasilibs/go-re2"
|
|
|
|
"github.com/trufflesecurity/trufflehog/v3/pkg/common"
|
|
"github.com/trufflesecurity/trufflehog/v3/pkg/detectors"
|
|
"github.com/trufflesecurity/trufflehog/v3/pkg/pb/detectorspb"
|
|
)
|
|
|
|
type Scanner struct {
|
|
client *http.Client
|
|
}
|
|
|
|
// Ensure the Scanner satisfies the interface at compile time.
|
|
var _ detectors.Detector = (*Scanner)(nil)
|
|
|
|
var (
|
|
defaultClient = common.SaneHttpClient()
|
|
// Make sure that your group is surrounded in boundary characters such as below to reduce false positives.
|
|
urlPat = regexp.MustCompile(`https://(.{1,50})\.(.{1,50})\.batch\.azure\.com`)
|
|
secretPat = regexp.MustCompile(`[A-Za-z0-9+/=]{88}`)
|
|
)
|
|
|
|
// 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{".batch.azure.com"}
|
|
}
|
|
|
|
// FromData will find and optionally verify Azurebatch 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)
|
|
|
|
urlMatches := urlPat.FindAllStringSubmatch(dataStr, -1)
|
|
secretMatches := secretPat.FindAllStringSubmatch(dataStr, -1)
|
|
|
|
for _, urlMatch := range urlMatches {
|
|
|
|
for _, secretMatch := range secretMatches {
|
|
|
|
endpoint := urlMatch[0]
|
|
accountName := urlMatch[1]
|
|
accountKey := secretMatch[0]
|
|
|
|
s1 := detectors.Result{
|
|
DetectorType: detectorspb.DetectorType_AzureBatch,
|
|
Raw: []byte(endpoint),
|
|
RawV2: []byte(endpoint + accountKey),
|
|
Redacted: endpoint,
|
|
}
|
|
|
|
if verify {
|
|
client := s.client
|
|
if client == nil {
|
|
client = defaultClient
|
|
}
|
|
url := fmt.Sprintf("%s/applications?api-version=2020-09-01.12.0", endpoint)
|
|
date := time.Now().UTC().Format(http.TimeFormat)
|
|
stringToSign := fmt.Sprintf(
|
|
"GET\n\n\n\n\napplication/json\n%s\n\n\n\n\n\n%s\napi-version:%s",
|
|
date,
|
|
strings.ToLower(fmt.Sprintf("/%s/applications", accountName)),
|
|
"2020-09-01.12.0",
|
|
)
|
|
key, _ := base64.StdEncoding.DecodeString(accountKey)
|
|
h := hmac.New(sha256.New, key)
|
|
h.Write([]byte(stringToSign))
|
|
signature := base64.StdEncoding.EncodeToString(h.Sum(nil))
|
|
req, err := http.NewRequest("GET", url, nil)
|
|
if err != nil {
|
|
continue
|
|
}
|
|
req.Header.Set("Content-Type", "application/json")
|
|
req.Header.Set("Authorization", fmt.Sprintf("SharedKey %s:%s", accountName, signature))
|
|
req.Header.Set("Date", date)
|
|
resp, err := client.Do(req)
|
|
if err != nil {
|
|
continue
|
|
}
|
|
defer resp.Body.Close()
|
|
|
|
if resp.StatusCode == http.StatusOK {
|
|
s1.Verified = true
|
|
}
|
|
|
|
}
|
|
|
|
results = append(results, s1)
|
|
if s1.Verified {
|
|
break
|
|
}
|
|
}
|
|
}
|
|
|
|
return results, nil
|
|
}
|
|
|
|
func (s Scanner) Type() detectorspb.DetectorType {
|
|
return detectorspb.DetectorType_AzureBatch
|
|
}
|