Network: Use QFile::encodeName for POSIX paths instead of toLatin1

POSIX API doesn't really have defined encoding and kernel works with
null-terminated byte strings (char *) without any knowledge about
encodings.

But usually applications use LANG (and LC_*) as encoding making it
possible to use any encoding user wishes, including full Unicode
support when UTF-8 is used.

This allows to create and listen to sockets with paths containing
non-latin characters.
eg. listen(QString("/run/υποδοχή"));

Change-Id: I022ac6a8a4575103125c48768a66bef88a232a2a
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Reviewed-by: Dāvis Mosāns <davispuh@gmail.com>

2 files changed, 15 insertions, 14 deletions

diff --git a/src/network/socket/qlocalserver_unix.cpp b/src/network/socket/qlocalserver_unix.cpp
index ef10b1e68d..634074d91f 100644
--- a/src/network/socket/qlocalserver_unix.cpp
+++ b/src/network/socket/qlocalserver_unix.cpp
@@ -85,7 +85,8 @@ bool QLocalServerPrivate::listen(const QString &requestedServerName)
     }
     serverName = requestedServerName;
 
-    QString tempPath;
+    QByteArray encodedTempPath;
+    const QByteArray encodedFullServerName = QFile::encodeName(fullServerName);
     QScopedPointer<QTemporaryDir> tempDir;
 
     // Check any of the flags
@@ -96,8 +97,7 @@ bool QLocalServerPrivate::listen(const QString &requestedServerName)
             setError(QLatin1String("QLocalServer::listen"));
             return false;
         }
-        tempPath = tempDir->path();
-        tempPath += QLatin1String("/s");
+        encodedTempPath = QFile::encodeName(tempDir->path() + QLatin1String("/s"));
     }
 
     // create the unix socket
@@ -111,23 +111,23 @@ bool QLocalServerPrivate::listen(const QString &requestedServerName)
     // Construct the unix address
     struct ::sockaddr_un addr;
     addr.sun_family = PF_UNIX;
-    if (sizeof(addr.sun_path) < (uint)fullServerName.toLatin1().size() + 1) {
+    if (sizeof(addr.sun_path) < (uint)encodedFullServerName.size() + 1) {
         setError(QLatin1String("QLocalServer::listen"));
         closeServer();
         return false;
     }
 
     if (socketOptions & QLocalServer::WorldAccessOption) {
-        if (sizeof(addr.sun_path) < (uint)tempPath.toLatin1().size() + 1) {
+        if (sizeof(addr.sun_path) < (uint)encodedTempPath.size() + 1) {
             setError(QLatin1String("QLocalServer::listen"));
             closeServer();
             return false;
         }
-        ::memcpy(addr.sun_path, tempPath.toLatin1().data(),
-                 tempPath.toLatin1().size() + 1);
+        ::memcpy(addr.sun_path, encodedTempPath.constData(),
+                 encodedTempPath.size() + 1);
     } else {
-        ::memcpy(addr.sun_path, fullServerName.toLatin1().data(),
-                 fullServerName.toLatin1().size() + 1);
+        ::memcpy(addr.sun_path, encodedFullServerName.constData(),
+                 encodedFullServerName.size() + 1);
     }
 
     // bind
@@ -165,13 +165,13 @@ bool QLocalServerPrivate::listen(const QString &requestedServerName)
         if (socketOptions & QLocalServer::OtherAccessOption)
             mode |= S_IRWXO;
 
-        if (::chmod(tempPath.toLatin1(), mode) == -1) {
+        if (::chmod(encodedTempPath.constData(), mode) == -1) {
             setError(QLatin1String("QLocalServer::listen"));
             closeServer();
             return false;
         }
 
-        if (::rename(tempPath.toLatin1(), fullServerName.toLatin1()) == -1) {
+        if (::rename(encodedTempPath.constData(), encodedFullServerName.constData()) == -1) {
             setError(QLatin1String("QLocalServer::listen"));
             closeServer();
             return false;
diff --git a/src/network/socket/qlocalsocket_unix.cpp b/src/network/socket/qlocalsocket_unix.cpp
index 77c5028fb3..bb0f11f038 100644
--- a/src/network/socket/qlocalsocket_unix.cpp
+++ b/src/network/socket/qlocalsocket_unix.cpp
@@ -268,15 +268,16 @@ void QLocalSocketPrivate::_q_connectToSocket()
         connectingPathName += QLatin1Char('/') + connectingName;
     }
 
+    const QByteArray encodedConnectingPathName = QFile::encodeName(connectingPathName);
     struct sockaddr_un name;
     name.sun_family = PF_UNIX;
-    if (sizeof(name.sun_path) < (uint)connectingPathName.toLatin1().size() + 1) {
+    if (sizeof(name.sun_path) < (uint)encodedConnectingPathName.size() + 1) {
         QString function = QLatin1String("QLocalSocket::connectToServer");
         errorOccurred(QLocalSocket::ServerNotFoundError, function);
         return;
     }
-    ::memcpy(name.sun_path, connectingPathName.toLatin1().data(),
-             connectingPathName.toLatin1().size() + 1);
+    ::memcpy(name.sun_path, encodedConnectingPathName.constData(),
+             encodedConnectingPathName.size() + 1);
     if (-1 == qt_safe_connect(connectingSocket, (struct sockaddr *)&name, sizeof(name))) {
         QString function = QLatin1String("QLocalSocket::connectToServer");
         switch (errno)