修正安装链结没有正确解析问题

Author: cyfung1031

src/pages/install/App.tsx

@@ -55,6 +55,53 @@ const closeWindow = (doBackwards: boolean) => {
     window.close();
   }
 };
+const resolveReachableUrl = async (inputUrl: URL, fallbackUrl: string) => {
+  const candidateUrls = new Set<string>();
+  candidateUrls.add(inputUrl.href);
+
+  const hostname = inputUrl.hostname;
+  const isGreasyFork = `.${hostname}`.endsWith(".greasyfork.org") || `.${hostname}`.endsWith("cn-greasyfork.org");
+
+  if (isGreasyFork) {
+    // example:
+    // https://update.greasyfork.org/scripts/550295/100%25%E8%A7%A3%E9%94%81CSDN%E6%96%87%E5%BA%93vip%E6%96%87%E7%AB%A0%E9%98%85%E8%AF%BB%E9%99%90%E5%88%B6.user.js
+    let decodedHref: string;
+    try {
+      decodedHref = decodeURI(inputUrl.href);
+    } catch {
+      decodedHref = fallbackUrl;
+    }
+    const lastSlashIndex = decodedHref.lastIndexOf("/");
+    const basePath = decodedHref.substring(0, lastSlashIndex);
+    const fileName = decodedHref.substring(lastSlashIndex + 1);
+    const reEncodedUrl = `${basePath}/${encodeURIComponent(fileName)}`;
+    candidateUrls.add(reEncodedUrl);
+  }
+  candidateUrls.add(fallbackUrl);
+  const requestOrigin = inputUrl.origin;
+  for (const candidateUrl of candidateUrls) {
+    let response: Response | undefined;
+    try {
+      response = await fetch(candidateUrl, {
+        method: "HEAD",
+        headers: {
+          "Cache-Control": "no-cache",
+          Accept:
+            "text/javascript,application/javascript,text/plain,application/octet-stream,application/force-download",
+          "Accept-Encoding": "br;q=1.0, gzip;q=0.8, *;q=0.1",
+          Origin: requestOrigin,
+        },
+        referrer: requestOrigin + "/",
+      });
+    } catch {
+      // ignored
+    }
+    if (response?.ok) {
+      return candidateUrl;
+    }
+  }
+  return "";
+};
 
 const fetchScriptBody = async (url: string, { onProgress }: { [key: string]: any }) => {
   let origin;
@@ -652,21 +699,24 @@ function App() {
     return !!(searchParams.get("uuid") || searchParams.get("file"));
   }, [searchParams]);
 
-  const urlHref = useMemo(() => {
+  const [urlHref, setUrlHref] = useState<string>("");
+
+  useEffect(() => {
+    let resultAsync: PromiseLike<string> | string = "";
     try {
       if (!hasUUIDorFile) {
         const url = searchParams.get("url");
         if (url) {
           const urlObject = new URL(url);
           if (urlObject.protocol && urlObject.hostname && urlObject.pathname) {
-            return urlObject.href;
+            resultAsync = resolveReachableUrl(urlObject, url);
           }
         }
       }
     } catch {
       // ignored
     }
-    return "";
+    Promise.resolve(resultAsync).then(setUrlHref);
   }, [hasUUIDorFile, searchParams]);
 
   const [fetchingState, setFetchingState] = useState({