Ignore default windows icons

service/profile/binmeta/icons.go

@@ -19,6 +19,9 @@ import (
 // Must not be changed once set.
 var ProfileIconStoragePath = ""
 
+// IconIgnored is returned when the icon should be ignored.
+var IconIgnored = errors.New("icon is ignored")
+
 // GetProfileIcon returns the profile icon with the given ID and extension.
 func GetProfileIcon(name string) (data []byte, err error) {
 	// Check if enabled.
@@ -26,6 +29,11 @@ func GetProfileIcon(name string) (data []byte, err error) {
 		return nil, errors.New("api icon storage not configured")
 	}
 
+	// Check if icon should be ignored.
+	if IgnoreIcon(name) {
+		return nil, IconIgnored
+	}
+
 	// Build storage path.
 	iconPath := filepath.Clean(
 		filepath.Join(ProfileIconStoragePath, name),
@@ -59,6 +67,11 @@ func UpdateProfileIcon(data []byte, ext string) (filename string, err error) {
 	}
 	sum := hex.EncodeToString(h.Sum(nil))
 
+	// Check if icon should be ignored.
+	if IgnoreIcon(sum) {
+		return "", IconIgnored
+	}
+
 	// Check ext.
 	ext = strings.ToLower(ext)
 	switch ext {

service/profile/binmeta/ignore.go

@@ -0,0 +1,30 @@
+package binmeta
+
+import (
+	"strings"
+)
+
+var ignoreIcons = map[string]struct{}{
+	// Windows Default Icons.
+	"a27898ddfa4e0481b62c69faa196919a738fcade": {},
+	"5a3eea8bcd08b9336ce9c5083f26185164268ee9": {},
+	"573393d6ad238d255b20dc1c1b303c95debe6965": {},
+	"d459b2cb23c27cc31ccab5025533048d5d8301bf": {},
+	"d35a0d91ebfda81df5286f68ec5ddb1d6ad6b850": {},
+	"cc33187385498384f1b648e23be5ef1a2e9f5f71": {},
+}
+
+// IgnoreIcon returns whether an icon should be ignored or not.
+func IgnoreIcon(name string) bool {
+	// Make lower case.
+	name = strings.ToLower(name)
+	// Remove extension.
+	extIndex := strings.Index(name, ".")
+	if extIndex > 0 {
+		name = name[:extIndex]
+	}
+
+	// Check if ID is in list.
+	_, found := ignoreIcons[name]
+	return found
+}