41 lines
1.2 KiB
Go
41 lines
1.2 KiB
Go
// Package output removes credentials from diagnostics before they reach an operator terminal.
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package output
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import (
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"fmt"
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"os"
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"regexp"
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"sort"
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"strings"
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)
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var credentialField = regexp.MustCompile(`(?im)(\b[\w.-]*(?:password|token|key)[\w.-]*\s*[:=]\s*)(?:"[^"\r\n]*"|'[^'\r\n]*'|[^\s,;]+)`)
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// Sanitize redacts common credential fields and every supplied secret value.
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func Sanitize(text string, secretValues []string) string {
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text = credentialField.ReplaceAllString(text, "${1}[REDACTED]")
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values := append([]string(nil), secretValues...)
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sort.Slice(values, func(i, j int) bool { return len(values[i]) > len(values[j]) })
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for _, value := range values {
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if value != "" {
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text = strings.ReplaceAll(text, value, "[REDACTED]")
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}
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}
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return text
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}
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// SecretValuesFromFiles reads non-empty secret-file contents without exposing them to callers.
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func SecretValuesFromFiles(paths []string) ([]string, error) {
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values := make([]string, 0, len(paths))
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for _, path := range paths {
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contents, err := os.ReadFile(path)
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if err != nil {
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return nil, fmt.Errorf("read secret file: %w", err)
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}
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if value := strings.TrimSpace(string(contents)); value != "" {
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values = append(values, value)
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}
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}
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return values, nil
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}
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