psalm fixes

src/BasicAuth.php

@@ -33,7 +33,7 @@ class BasicAuth implements IAuth {
 	}
 
 	public function getExtraCommandLineArguments(): string {
-		return ($this->workgroup) ? '-W ' . escapeshellarg($this->workgroup) : '';
+		return ($this->workgroup !== null) ? '-W ' . escapeshellarg($this->workgroup) : '';
 	}
 
 	public function setExtraSmbClientOptions($smbClientState): void {

src/Exception/Exception.php

@@ -23,7 +23,7 @@ class Exception extends \Exception {
 	 */
 	public static function unknown(?string $path, $error): Exception {
 		$message = 'Unknown error (' . (string)$error . ')';
-		if ($path) {
+		if ($path !== null) {
 			$message .= ' for ' . $path;
 		}
 

src/Exception/InvalidRequestException.php

@@ -12,6 +12,9 @@ class InvalidRequestException extends Exception {
 	 */
 	protected $path;
 
+	/**
+	 * @psalm-suppress ParamNameMismatch
+	 */
 	public function __construct(string $path = "", int $code = 0, ?\Throwable $previous = null) {
 		$class = get_class($this);
 		$parts = explode('\\', $class);

src/KerberosTicket.php

@@ -47,7 +47,7 @@ class KerberosTicket {
 	 */
 	public static function fromEnv(): ?KerberosTicket {
 		$ticketName = getenv("KRB5CCNAME");
-		if (!$ticketName) {
+		if ($ticketName === false) {
 			return null;
 		}
 		$krb5 = new KRB5CCache();

src/Native/NativeFileInfo.php

@@ -129,9 +129,17 @@ class NativeFileInfo implements IFileInfo {
 		$attribute = $this->share->getAttribute($this->path, 'system.nt_sec_desc.acl.*+');
 
 		foreach (explode(',', $attribute) as $acl) {
-			list($user, $permissions) = explode(':', $acl, 2);
+			$parts = explode(':', $acl, 2);
+			if (count($parts) !== 2) {
+				continue;
+			}
+			list($user, $permissions) = $parts;
 			$user = trim($user, '\\');
-			list($type, $flags, $mask) = explode('/', $permissions);
+			$parts = explode('/', $permissions);
+			if (count($parts) < 3) {
+				continue;
+			}
+			list($type, $flags, $mask) = $parts;
 			$mask = hexdec($mask);
 
 			$acls[$user] = new ACL((int)$type, (int)$flags, (int)$mask);

src/Native/NativeState.php

@@ -322,7 +322,7 @@ class NativeState {
 		if (!$this->state) {
 			throw new ConnectionException("Not connected");
 		}
-		if ($length) {
+		if ($length !== null) {
 			$result = @smbclient_write($this->state, $file, $data, $length);
 		} else {
 			$result = @smbclient_write($this->state, $file, $data);

src/TimeZoneProvider.php

@@ -28,7 +28,7 @@ class TimeZoneProvider implements ITimeZoneProvider {
 			$timeZone = null;
 			$net = $this->system->getNetPath();
 			// for local domain names we can assume same timezone
-			if ($net && $host && strpos($host, '.') !== false) {
+			if ($net !== null && $host && strpos($host, '.') !== false) {
 				$command = sprintf(
 					'%s time zone -S %s',
 					$net,
@@ -37,11 +37,12 @@ class TimeZoneProvider implements ITimeZoneProvider {
 				$timeZone = exec($command);
 			}
 
-			if (!$timeZone) {
+			if (!is_string($timeZone)) {
 				$date = $this->system->getDatePath();
-				if ($date) {
+				if ($date !== null) {
 					$timeZone = exec($date . " +%z");
-				} else {
+				}
+				if (!is_string($timeZone)) {
 					$timeZone = date_default_timezone_get();
 				}
 			}

src/Wrapped/Connection.php

@@ -93,11 +93,11 @@ class Connection extends RawConnection {
 	 * @return no-return
 	 */
 	private function unknownError($promptLine = '') {
-		if ($promptLine) { //maybe we have some error we missed on the previous line
+		if ($promptLine !== false) { //maybe we have some error we missed on the previous line
 			throw new ConnectException('Unknown error (' . $promptLine . ')');
 		} else {
 			$error = $this->readError(); // maybe something on stderr
-			if ($error) {
+			if ($error !== false) {
 				throw new ConnectException('Unknown error (stderr: ' . $error . ')');
 			} else {
 				throw new ConnectException('Unknown error');

src/Wrapped/Parser.php

@@ -78,14 +78,17 @@ class Parser {
 	 * @throws NotFoundException
 	 */
 	public function checkForError(array $output, string $path): void {
-		if (strpos($output[0], 'does not exist')) {
-			throw new NotFoundException($path);
-		}
-		$error = $this->getErrorCode($output[0]);
+		$error = '';
+		if (isset($output[0])) {
+			if (strpos($output[0], 'does not exist') > 0) {
+				throw new NotFoundException($path);
+			}
+			$error = $this->getErrorCode($output[0]);
 
-		if (substr($output[0], 0, strlen(self::MSG_NOT_FOUND)) === self::MSG_NOT_FOUND) {
-			$localPath = substr($output[0], strlen(self::MSG_NOT_FOUND));
-			throw new InvalidResourceException('Failed opening local file "' . $localPath . '" for writing');
+			if (substr($output[0], 0, strlen(self::MSG_NOT_FOUND)) === self::MSG_NOT_FOUND) {
+				$localPath = substr($output[0], strlen(self::MSG_NOT_FOUND));
+				throw new InvalidResourceException('Failed opening local file "' . $localPath . '" for writing');
+			}
 		}
 
 		throw Exception::fromMap(self::EXCEPTION_MAP, $error, $path);
@@ -197,12 +200,12 @@ class Parser {
 	public function parseListShares(array $output): array {
 		$shareNames = [];
 		foreach ($output as $line) {
-			if (strpos($line, '|')) {
+			if (strpos($line, '|') > 0) {
 				list($type, $name, $description) = explode('|', $line);
 				if (strtolower($type) === 'disk') {
 					$shareNames[$name] = $description;
 				}
-			} elseif (strpos($line, 'Disk')) {
+			} elseif (strpos($line, 'Disk') > 0) {
 				// new output format
 				list($name, $description) = explode('Disk', $line);
 				$shareNames[trim($name)] = trim($description);
@@ -221,12 +224,24 @@ class Parser {
 			if (strpos($acl, ':') === false) {
 				continue;
 			}
-			[$type, $acl] = explode(':', $acl, 2);
+			$parts = explode(':', $acl, 2);
+			if (count($parts) !== 2) {
+				continue;
+			}
+			[$type, $acl] = $parts;
 			if ($type !== 'ACL') {
 				continue;
 			}
-			[$user, $permissions] = explode(':', $acl, 2);
-			[$type, $flags, $mask] = explode('/', $permissions);
+			$parts = explode(':', $acl, 2);
+			if (count($parts) !== 2) {
+				continue;
+			}
+			[$user, $permissions] = $parts;
+			$parts = explode('/', $permissions);
+			if (count($parts) < 3) {
+				continue;
+			}
+			[$type, $flags, $mask] = $parts;
 
 			$type = $type === 'ALLOWED' ? ACL::TYPE_ALLOW : ACL::TYPE_DENY;
 

src/Wrapped/Server.php

@@ -28,7 +28,7 @@ class Server extends AbstractServer {
 	}
 
 	private function getAuthFileArgument(): string {
-		if ($this->getAuth()->getUsername()) {
+		if ($this->getAuth()->getUsername() !== null) {
 			return '--authentication-file=' . $this->system->getFD(3);
 		} else {
 			return '';
@@ -54,8 +54,8 @@ class Server extends AbstractServer {
 			$smbClient,
 			$this->getAuthFileArgument(),
 			$this->getAuth()->getExtraCommandLineArguments(),
-			$maxProtocol ? "--option='client max protocol=" . $maxProtocol . "'" : "",
-			$minProtocol ? "--option='client min protocol=" . $minProtocol . "'" : "",
+			($maxProtocol !== null) ? "--option='client max protocol=" . $maxProtocol . "'" : "",
+			($minProtocol !== null) ? "--option='client min protocol=" . $minProtocol . "'" : "",
 			escapeshellarg('//' . $this->getHost())
 		);
 		$connection = new RawConnection($command);

src/Wrapped/Share.php

@@ -76,7 +76,7 @@ class Share extends AbstractShare {
 	}
 
 	private function getAuthFileArgument(): string {
-		if ($this->server->getAuth()->getUsername()) {
+		if ($this->server->getAuth()->getUsername() !== null) {
 			return '--authentication-file=' . $this->system->getFD(3);
 		} else {
 			return '';
@@ -94,13 +94,13 @@ class Share extends AbstractShare {
 		$command = sprintf(
 			'%s %s%s -t %s %s %s %s %s %s',
 			self::EXEC_CMD,
-			$stdBuf ? $stdBuf . ' -o0 ' : '',
+			($stdBuf !== null) ? $stdBuf . ' -o0 ' : '',
 			$smbClient,
 			$this->server->getOptions()->getTimeout(),
 			$this->getAuthFileArgument(),
 			$this->server->getAuth()->getExtraCommandLineArguments(),
-			$maxProtocol ? "--option='client max protocol=" . $maxProtocol . "'" : "",
-			$minProtocol ? "--option='client min protocol=" . $minProtocol . "'" : "",
+			($maxProtocol !== null) ? "--option='client max protocol=" . $maxProtocol . "'" : "",
+			($minProtocol !== null) ? "--option='client min protocol=" . $minProtocol . "'" : "",
 			escapeshellarg('//' . $this->server->getHost() . '/' . $this->name)
 		);
 		$connection = new Connection($command, $this->parser);
@@ -439,7 +439,7 @@ class Share extends AbstractShare {
 	 * @throws DependencyException
 	 */
 	public function notify(string $path): INotifyHandler {
-		if (!$this->system->getStdBufPath()) { //stdbuf is required to disable smbclient's output buffering
+		if ($this->system->getStdBufPath() == null) { //stdbuf is required to disable smbclient's output buffering
 			throw new DependencyException('stdbuf is required for usage of the notify command');
 		}
 		$connection = $this->getConnection(); // use a fresh connection since the notify command blocks the process
@@ -519,7 +519,7 @@ class Share extends AbstractShare {
 	 */
 	protected function getAcls(string $path): array {
 		$commandPath = $this->system->getSmbcAclsPath();
-		if (!$commandPath) {
+		if ($commandPath === null) {
 			return [];
 		}