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Redact CPK headers in log output. #2127

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Merged
vibhansa-msft merged 1 commit into from
Mar 28, 2023
Merged

Redact CPK headers in log output. #2127

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14 changes: 13 additions & 1 deletion ste/xferLogPolicy.go
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Original file line number Diff line number Diff line change
Expand Up @@ -254,7 +254,7 @@ func prepareRequestForServiceLogging(request pipeline.Request) *http.Request {
// contains header x-ms-copy-source which could contains secrets for authentication.
// Prepare the headers for logging, with redact secrets in x-ms-copy-source header.
if exist, key := doesHeaderExistCaseInsensitive(req.Header, xMsCopySourceHeader); exist {
req = request.Copy()
req = req.Copy()
url, err := url.Parse(req.Header.Get(key))
if err == nil {
rawQuery := url.RawQuery
Expand All @@ -267,10 +267,22 @@ func prepareRequestForServiceLogging(request pipeline.Request) *http.Request {
}
}
}
// Redact headers that have to do with CPK keys.
if exist, key := doesHeaderExistCaseInsensitive(req.Header, xMsEncryptionKey); exist {
req = req.Copy()
req.Header.Set(key, "REDACTED")
}
if exist, key := doesHeaderExistCaseInsensitive(req.Header, xMsEncryptionKeySha256); exist {
req = req.Copy()
req.Header.Set(key, "REDACTED")
}

return req.Request
}

const xMsCopySourceHeader = "x-ms-copy-source"
const xMsEncryptionKey = "x-ms-encryption-key"
const xMsEncryptionKeySha256 = "x-ms-encryption-key-sha256"

func doesHeaderExistCaseInsensitive(header http.Header, key string) (bool, string) {
for keyInHeader := range header {
Expand Down