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<?php |
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namespace Startwind\Inventorio\Collector\System\Security; |
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use Startwind\Inventorio\Collector\Collector; |
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class AuthorizedKeysCollector implements Collector |
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{ |
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public function getIdentifier(): string |
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{ |
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return 'SecurityAuthorizedKeys'; |
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} |
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public function collect(): array |
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{ |
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$results = []; |
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// Read all user accounts from /etc/passwd |
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$passwdLines = file('/etc/passwd', FILE_IGNORE_NEW_LINES | FILE_SKIP_EMPTY_LINES); |
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foreach ($passwdLines as $line) { |
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$parts = explode(':', $line); |
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if (count($parts) < 6) { |
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continue; |
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} |
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// Extract username, UID, and home directory |
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[$username, , $uid, , , $homeDirectory] = array_slice($parts, 0, 6); |
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// Only consider regular users (UID >= 1000) with a valid home directory |
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if ((int)$uid < 1000 || !is_dir($homeDirectory)) { |
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continue; |
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} |
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$authorizedKeysPath = $homeDirectory . '/.ssh/authorized_keys'; |
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// If authorized_keys exists, parse it |
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if (!file_exists($authorizedKeysPath)) { |
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continue; |
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} |
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$entries = $this->parseAuthorizedKeysFile($authorizedKeysPath, $username); |
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// Merge entries into the final result list |
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$results = array_merge($results, $entries); |
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} |
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return $results; |
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} |
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/** |
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* Parse an authorized_keys file and return structured entries including username. |
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* |
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* @param string $filePath Path to the authorized_keys file |
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* @param string $username The user who owns the file |
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* @return array List of structured authorized key entries |
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*/ |
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private function parseAuthorizedKeysFile(string $filePath, string $username): array |
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{ |
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$entries = []; |
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$lines = file($filePath, FILE_IGNORE_NEW_LINES | FILE_SKIP_EMPTY_LINES); |
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foreach ($lines as $line) { |
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$line = trim($line); |
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// Skip comments and empty lines |
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if ($line === '' || str_starts_with($line, '#')) { |
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continue; |
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} |
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// Some lines may include options before the key, like: command="..." ssh-rsa AAAA... |
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if (preg_match('/^(ssh-(rsa|ed25519|dss)|ecdsa-[^\s]+)\s+([A-Za-z0-9+\/=]+)(\s+(.*))?$/', $line, $matches)) { |
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$entries[] = [ |
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'user' => $username, |
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'key_type' => $matches[1], |
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'key' => $matches[3], |
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'comment' => $matches[5] ?? null |
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]; |
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} |
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} |
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return $entries; |
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} |
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} |
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startwind /
inventorio-command-line
