Skin fix -> online fixes

Signed-off-by: TheKodeToad <TheKodeToad@proton.me>
2022-12-23 09:35:29 +00:00
parent 94067f34cf
commit 884bd85495
8 changed files with 44 additions and 127 deletions
@@ -0,0 +1,103 @@
+package org.prismlauncher.fix.online;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.net.URL;
+import java.util.Map;
+
+import org.prismlauncher.utils.Base64;
+import org.prismlauncher.utils.JsonParser;
+
+@SuppressWarnings("unchecked")
+final class SkinFix {
+
+    static URL redirect(URL address) throws IOException {
+        String skinOwner = findSkinOwner(address);
+        if (skinOwner != null)
+            return convert(skinOwner, "SKIN");
+
+        String capeOwner = findCapeOwner(address);
+        if (capeOwner != null)
+            return convert(capeOwner, "CAPE");
+
+        return address;
+    }
+
+    private static URL convert(String owner, String name) throws IOException {
+        Map<String, Object> textures = getTextures(owner);
+
+        if (textures != null) {
+            textures = (Map<String, Object>) textures.get(name);
+            if (textures == null)
+                return null;
+
+            return new URL((String) textures.get("url"));
+        }
+
+        return null;
+    }
+
+    private static Map<String, Object> getTextures(String owner) throws IOException {
+        try (InputStream in = new URL("https://api.mojang.com/users/profiles/minecraft/" + owner).openStream()) {
+            Map<String, Object> map = (Map<String, Object>) JsonParser.parse(in);
+            String id = (String) map.get("id");
+
+            try (InputStream profileIn = new URL("https://sessionserver.mojang.com/session/minecraft/profile/" + id)
+                    .openStream()) {
+                Map<String, Object> profile = (Map<String, Object>) JsonParser.parse(profileIn);
+
+                for (Map<String, Object> property : (Iterable<Map<String, Object>>) profile.get("properties")) {
+                    if (property.get("name").equals("textures")) {
+                        Map<String, Object> result = (Map<String, Object>) JsonParser
+                                .parse(new String(Base64.decode((String) property.get("value"))));
+                        result = (Map<String, Object>) result.get("textures");
+
+                        return result;
+                    }
+                }
+
+                return null;
+            }
+        }
+    }
+
+    private static String findSkinOwner(URL address) {
+        switch (address.getHost()) {
+            case "www.minecraft.net":
+                return stripIfPrefixed(address.getPath(), "/skin/");
+
+            case "s3.amazonaws.com":
+            case "skins.minecraft.net":
+                return stripIfPrefixed(address.getPath(), "/MinecraftSkins/");
+        }
+
+        return null;
+    }
+
+    private static String findCapeOwner(URL address) {
+        switch (address.getHost()) {
+            case "www.minecraft.net":
+                return stripIfPrefixed(address.getQuery(), "user=");
+
+            case "s3.amazonaws.com":
+            case "skins.minecraft.net":
+                return stripIfPrefixed(address.getPath(), "/MinecraftCloaks/");
+        }
+
+        return null;
+    }
+
+    private static String stripIfPrefixed(String string, String prefix) {
+        if (string != null && string.startsWith(prefix)) {
+            string = string.substring(prefix.length());
+
+            if (string.endsWith(".png"))
+                string = string.substring(0, string.lastIndexOf('.'));
+
+            return string;
+        }
+
+        return null;
+    }
+
+}