SNI: Allow IconPath to be empty

Fixes network-manager-applet

src/Common.h

@@ -2,6 +2,7 @@
 #include <iostream>
 #include <unistd.h>
 #include <string>
+#include <filesystem>
 
 #include "Log.h"
 
@@ -82,6 +83,20 @@ namespace Utils
         snprintf(buf, sizeof(buf), fmt, bytes, "B");
         return buf;
     }
+
+    inline std::string FindFileWithName(const std::string& directory, const std::string& name, const std::string& extension)
+    {
+        for (auto& path : std::filesystem::recursive_directory_iterator(directory))
+        {
+            if (path.is_directory())
+                continue;
+            if (path.path().filename().string().find(name) != std::string::npos && path.path().extension().string() == extension)
+            {
+                return path.path().string();
+            }
+        }
+        return "";
+    }
 }
 
 struct Process

src/SNI.cpp

@@ -2,6 +2,7 @@
 #include "Log.h"
 #include "Widget.h"
 #include "Config.h"
+#include "Common.h"
 
 #ifdef WITH_SNI
 
@@ -136,7 +137,16 @@ namespace SNI
 
                 const char* themePath = g_variant_get_string(themePathStr, nullptr);
                 const char* iconName = g_variant_get_string(iconNameStr, nullptr);
+                if (strlen(themePath) == 0)
+                {
+                    // Nothing defined, look in /usr/share/icons
+                    // network-manager-applet does this
+                    iconPath = Utils::FindFileWithName("/usr/share/icons", iconName, ".png");
+                }
+                else
+                {
                     iconPath = std::string(themePath) + "/" + iconName + ".png"; // TODO: Find out if this is always png
+                }
 
                 g_variant_unref(themePathVariant);
                 g_variant_unref(themePathStr);