fix user fetching logic

src/main.cpp

@@ -14,7 +14,6 @@ extern "C" {
 #include <QListWidget>
 #include <QTranslator>
 #include <notifications.hpp>
-#include <platformbackend.hpp>
 #include <worker/worker.hpp>
 
 bool verbose = false;

src/platformspecifics/mac/macbackend.cpp

@@ -20,7 +20,7 @@ bool PlatformBackend::filenameValid(QString name) {
 }
 
 QString PlatformBackend::getCurrentUser() {
-    auto pwent = getpwent();
+    auto pwent = getpwuid(getuid());
     if (!pwent) {
         if (qEnvironmentVariableIsSet("USER"))
             return QString::fromLocal8Bit(qgetenv("USER"));

src/platformspecifics/u32/u32backend.cpp

@@ -50,7 +50,7 @@ QString PlatformBackend::getCurrentUser() {
     DWORD username_len = UNLEN + 1;
     QString userName;
     if (GetUserName(username, &username_len)) {
-        userName = QString::fromWCharArray(username, username_len);
+        userName = QString::fromWCharArray(username, username_len - 1);
     }
     delete[] username;
     return userName;

src/platformspecifics/x11/x11backend.cpp

@@ -60,7 +60,7 @@ bool PlatformBackend::filenameValid(QString name) {
 }
 
 QString PlatformBackend::getCurrentUser() {
-    auto pwent = getpwent();
+    auto pwent = getpwuid(getuid());
     if (!pwent) {
         if (qEnvironmentVariableIsSet("USER"))
             return QString::fromLocal8Bit(qgetenv("USER"));