mirror of
https://github.com/trufflesecurity/trufflehog.git
synced 2024-11-15 01:17:34 +00:00
89 lines
2.6 KiB
Go
89 lines
2.6 KiB
Go
package square
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import (
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"context"
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"fmt"
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"net/http"
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"regexp"
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"strings"
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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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"github.com/trufflesecurity/trufflehog/v3/pkg/common"
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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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// more context to be added if this is too generic
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secretPat = regexp.MustCompile(detectors.PrefixRegex([]string{"square"}) + `(EAAA[a-zA-Z0-9\-\+\=]{60})`)
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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{"EAAA"}
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}
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// FromData will find and optionally verify Square 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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// Surprisingly there are still a lot of false positives! So, also doing substring check for square.
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if !strings.Contains(strings.ToLower(dataStr), "square") {
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return
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}
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secMatches := secretPat.FindAllStringSubmatch(dataStr, -1)
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for _, secMatch := range secMatches {
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if len(secMatch) != 2 {
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continue
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}
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res := strings.TrimSpace(secMatch[1])
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s := detectors.Result{
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DetectorType: detectorspb.DetectorType_Square,
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Raw: []byte(res),
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}
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if verify {
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// there are a few endpoints we can check, but templates seems the least sensitive.
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// 403 will be issued if the scope is wrong but the key is correct
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baseURL := "https://connect.squareupsandbox.com/v2/merchants"
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client := common.SaneHttpClient()
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// test `merchants` scope - its commonly allowed and low sensitivity
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req, _ := http.NewRequestWithContext(ctx, "GET", baseURL, nil)
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req.Header.Add("Authorization", fmt.Sprintf("Bearer %s", res))
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req.Header.Add("Content-Type", "application/json")
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// unclear if this version needs to be set or matters, seems to work without, but docs want it
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//req.Header.Add("Square-Version", "2020-08-12")
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res, err := client.Do(req)
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if err != nil {
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return results, err
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}
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defer res.Body.Close()
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// 200 means good key and has `merchants` scope - default allowed by square
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// 401 is bad key
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if res.StatusCode == http.StatusOK || res.StatusCode == http.StatusForbidden {
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s.Verified = true
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}
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}
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if !s.Verified {
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if detectors.IsKnownFalsePositive(string(s.Raw), detectors.DefaultFalsePositives, true) {
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continue
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}
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}
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results = append(results, s)
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}
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return
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}
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