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Truncate the response body that's returned in error messages from logs

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This commit is contained in:
Andrew Ayer
2025-09-18 12:50:09 -04:00
parent dc1ac20e24
commit c36f00be9e
1 changed files with 13 additions and 2 deletions
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15
ctclient/client.go
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@@ -21,6 +21,7 @@ import (
"net"
"net/http"
"net/url"
"strconv"
"time"
"software.sslmate.com/src/certspotter/cttypes"
@@ -83,7 +84,7 @@ func get(ctx context.Context, httpClient *http.Client, fullURL string) ([]byte,
}
if response.StatusCode != 200 {
return nil, fmt.Errorf("Get %q: %s (%q)", fullURL, response.Status, bytes.TrimSpace(responseBody))
return nil, fmt.Errorf("Get %q: %s (%s)", fullURL, response.Status, formatResponseBody(responseBody))
}
return responseBody, nil
@@ -152,7 +153,7 @@ func addChainOrPreChain(ctx context.Context, httpClient *http.Client, logURL *ur
}
if response.StatusCode != 200 {
return nil, fmt.Errorf("Post %q: %s (%q)", fullURL, response.Status, bytes.TrimSpace(responseBody))
return nil, fmt.Errorf("Post %q: %s (%s)", fullURL, response.Status, formatResponseBody(responseBody))
}
sct := new(cttypes.SignedCertificateTimestamp)
@@ -162,3 +163,13 @@ func addChainOrPreChain(ctx context.Context, httpClient *http.Client, logURL *ur
return sct, nil
}
func formatResponseBody(body []byte) string {
const maxLen = 200
body = bytes.TrimSpace(body)
if len(body) > maxLen {
return strconv.QuoteToASCII(string(body[:maxLen])) + "..."
} else {
return strconv.QuoteToASCII(string(body))
}
}