Add an option validation on cli commands (#2278)

If an option used on cli is not recognized, the command
aborts and displays an error message.
If the typed option is similar to one of the recognized
options, a hint is displayed.

At the moment, there is a limitation on long options.
Short options are not validated at the moment.

See #2046

1 files changed, 25 insertions, 0 deletions

diff --git a/cli/_cli.php b/cli/_cli.php
index e8fb6ae42..dec244bc3 100644
--- a/cli/_cli.php
+++ b/cli/_cli.php
@@ -3,6 +3,9 @@ if (php_sapi_name() !== 'cli') {
 	die('FreshRSS error: This PHP script may only be invoked from command line!');
 }
 
+const REGEX_INPUT_OPTIONS = '/^--/';
+const REGEX_PARAM_OPTIONS = '/:*$/';
+
 require(__DIR__ . '/../constants.php');
 require(LIB_PATH . '/lib_rss.php');	//Includes class autoloader
 require(LIB_PATH . '/lib_install.php');
@@ -64,3 +67,25 @@ function performRequirementCheck($databaseType) {
 		fail($message);
 	}
 }
+
+function getLongOptions($options, $regex) {
+	$longOptions = array_filter($options, function($a) use ($regex) {
+		return preg_match($regex, $a);
+	});
+	return array_map(function($a) use ($regex) {
+		return preg_replace($regex, '', $a);
+	}, $longOptions);
+}
+
+function validateOptions($input, $params) {
+	$sanitizeInput = getLongOptions($input, REGEX_INPUT_OPTIONS);
+	$sanitizeParams = getLongOptions($params, REGEX_PARAM_OPTIONS);
+	$unknownOptions = array_diff($sanitizeInput, $sanitizeParams);
+
+	if (0 === count($unknownOptions)) {
+		return true;
+	}
+
+	fwrite(STDERR, sprintf("FreshRSS error: unknown options: %s\n", implode (', ', $unknownOptions)));
+	return false;
+}