feat: Added function to handle symlink (#227)

src/backend/ssh/file-manager.ts

@@ -329,6 +329,71 @@ app.get("/ssh/file_manager/ssh/listFiles", (req, res) => {
   });
 });
 
+app.get("/ssh/file_manager/ssh/identifySymlink", (req, res) => {
+  const sessionId = req.query.sessionId as string;
+  const sshConn = sshSessions[sessionId];
+  const linkPath = decodeURIComponent(req.query.path as string);
+
+  if (!sessionId) {
+    return res.status(400).json({ error: "Session ID is required" });
+  }
+
+  if (!sshConn?.isConnected) {
+    return res.status(400).json({ error: "SSH connection not established" });
+  }
+
+  if (!linkPath) {
+    return res.status(400).json({ error: "Link path is required" });
+  }
+
+  sshConn.lastActive = Date.now();
+
+  const escapedPath = linkPath.replace(/'/g, "'\"'\"'");
+  const command = `stat -L -c "%F" '${escapedPath}' && readlink -f '${escapedPath}'`;
+
+  sshConn.client.exec(command, (err, stream) => {
+    if (err) {
+      fileLogger.error("SSH identifySymlink error:", err);
+      return res.status(500).json({ error: err.message });
+    }
+
+    let data = "";
+    let errorData = "";
+
+    stream.on("data", (chunk: Buffer) => {
+      data += chunk.toString();
+    });
+
+    stream.stderr.on("data", (chunk: Buffer) => {
+      errorData += chunk.toString();
+    });
+
+    stream.on("close", (code) => {
+      if (code !== 0) {
+        fileLogger.error(
+          `SSH identifySymlink command failed with code ${code}: ${errorData.replace(/\n/g, " ").trim()}`,
+        );
+        return res.status(500).json({ error: `Command failed: ${errorData}` });
+      }
+
+      const [fileType, target] = data.trim().split("\n");
+      
+      res.json({
+        path: linkPath,
+        target: target,
+        type: fileType.toLowerCase().includes("directory") ? "directory" : "file"
+      });
+    });
+
+    stream.on("error", (streamErr) => {
+      fileLogger.error("SSH identifySymlink stream error:", streamErr);
+      if (!res.headersSent) {
+        res.status(500).json({ error: `Stream error: ${streamErr.message}` });
+      }
+    });
+  });
+});
+
 app.get("/ssh/file_manager/ssh/readFile", (req, res) => {
   const sessionId = req.query.sessionId as string;
   const sshConn = sshSessions[sessionId];