118 lines
3.3 KiB
PHP
118 lines
3.3 KiB
PHP
<?php
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declare(strict_types=1);
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namespace App\Services\Intune;
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use Illuminate\Support\Str;
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final class SecretClassificationService
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{
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public const string REDACTED = '[REDACTED]';
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public const int REDACTION_VERSION = 1;
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/**
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* @var array<int, string>
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*/
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private const array PROTECTED_FIELD_NAMES = [
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'access_token',
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'apikey',
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'api_key',
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'authorization',
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'bearer',
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'bearer_token',
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'client_secret',
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'cookie',
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'password',
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'presharedkey',
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'pre_shared_key',
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'private_key',
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'refresh_token',
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'sas_token',
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'secret',
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'set-cookie',
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'shared_secret',
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'token',
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];
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/**
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* @var array<string, array<int, string>>
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*/
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private const array PROTECTED_JSON_POINTERS = [
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'snapshot' => [
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'/wifi/password',
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'/authentication/clientSecret',
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],
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'assignments' => [],
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'scope_tags' => [],
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'audit' => [],
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'verification' => [],
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'ops_failure' => [],
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];
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public function protectsField(string $sourceBucket, string $fieldName, ?string $jsonPointer = null): bool
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{
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$fieldName = $this->normalizeFieldName($fieldName);
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if ($fieldName === '') {
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return false;
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}
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$protectedPointers = self::PROTECTED_JSON_POINTERS[$sourceBucket] ?? [];
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if (is_string($jsonPointer) && in_array($jsonPointer, $protectedPointers, true)) {
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return true;
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}
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return in_array($fieldName, self::PROTECTED_FIELD_NAMES, true);
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}
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public function sanitizeAuditString(string $value): string
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{
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return $this->sanitizeMessageLikeString($value, '[REDACTED]');
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}
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public function sanitizeOpsFailureString(string $value): string
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{
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$sanitized = $this->sanitizeMessageLikeString($value, '[REDACTED_SECRET]');
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$sanitized = preg_replace('/[A-Z0-9._%+\-]+@[A-Z0-9.\-]+\.[A-Z]{2,}/i', '[REDACTED_EMAIL]', $sanitized) ?? $sanitized;
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return $sanitized;
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}
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private function sanitizeMessageLikeString(string $value, string $replacement): string
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{
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$patterns = [
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'/\bAuthorization\s*:\s*Bearer\s+[A-Za-z0-9\-\._~\+\/]+=*/i',
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'/\bBearer\s+[A-Za-z0-9\-\._~\+\/]+=*/i',
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'/\b[A-Za-z0-9\-_]{20,}\.[A-Za-z0-9\-_]{20,}\.[A-Za-z0-9\-_]{20,}\b/',
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];
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foreach ($patterns as $pattern) {
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$value = preg_replace($pattern, $replacement, $value) ?? $value;
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}
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foreach (self::PROTECTED_FIELD_NAMES as $fieldName) {
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$quotedPattern = sprintf('/"%s"\s*:\s*"[^"]*"/i', preg_quote($fieldName, '/'));
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$pairPattern = sprintf('/\b%s\b\s*[:=]\s*[^\s,;]+/i', preg_quote($fieldName, '/'));
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$value = preg_replace($quotedPattern, sprintf('"%s":"%s"', $fieldName, $replacement), $value) ?? $value;
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$value = preg_replace($pairPattern, sprintf('%s=%s', $fieldName, $replacement), $value) ?? $value;
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}
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return $value;
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}
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private function normalizeFieldName(string $fieldName): string
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{
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$fieldName = Str::of($fieldName)
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->replace(['-', ' '], '_')
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->snake()
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->lower()
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->toString();
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return trim($fieldName);
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}
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}
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