103 lines
2.9 KiB
Go
103 lines
2.9 KiB
Go
package alchemy
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import (
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"context"
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"fmt"
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"io"
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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/detectorspb"
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)
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type Scanner struct {
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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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keyPat = regexp.MustCompile(detectors.PrefixRegex([]string{"alchemy"}) + `\b([a-zA-Z0-9]{23}_[a-zA-Z0-9]{8})\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{"alchemy"}
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}
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// FromData will find and optionally verify Alchemy 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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uniqueMatches := make(map[string]struct{})
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for _, match := range keyPat.FindAllStringSubmatch(dataStr, -1) {
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uniqueMatches[match[1]] = struct{}{}
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}
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for match := range uniqueMatches {
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s1 := detectors.Result{
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DetectorType: detectorspb.DetectorType_Alchemy,
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Raw: []byte(match),
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}
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if verify {
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client := s.client
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if client == nil {
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client = defaultClient
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}
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isVerified, extraData, verificationErr := verifyMatch(ctx, client, match)
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s1.Verified = isVerified
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s1.ExtraData = extraData
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s1.SetVerificationError(verificationErr, match)
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}
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// 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.
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if !s1.Verified && detectors.IsKnownFalsePositive(match, detectors.DefaultFalsePositives, true) {
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continue
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}
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results = append(results, s1)
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}
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return
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}
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func verifyMatch(ctx context.Context, client *http.Client, token string) (bool, map[string]string, error) {
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req, err := http.NewRequestWithContext(ctx, http.MethodGet, "https://eth-mainnet.g.alchemy.com/v2/"+token+"/getNFTs/?owner=vitalik.eth", nil)
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if err != nil {
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return false, nil, nil
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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, nil, err
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}
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defer func() {
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_, _ = io.Copy(io.Discard, res.Body)
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_ = res.Body.Close()
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}()
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if res.StatusCode >= 200 && res.StatusCode < 300 {
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// If the endpoint returns useful information, we can return it as a map.
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return true, nil, nil
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} else if res.StatusCode == 401 {
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// The secret is determinately not verified (nothing to do)
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return false, nil, nil
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} else {
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err = fmt.Errorf("unexpected HTTP response status %d", res.StatusCode)
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return false, nil, err
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}
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}
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func (s Scanner) Type() detectorspb.DetectorType {
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return detectorspb.DetectorType_Alchemy
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}
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