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Reroute cloud through IPC channel #10285

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@riknoll riknoll commented Nov 21, 2024

no need to review this just yet; mostly just opening this for visibility. adds an alternate auth client that proxies cloud requests to the parent frame. in the future, i'll swap out the frame implementation with one that talks over the IPC channel to minecraft

if (message.action === "cloudproxy") {
if (this.pendingMessages[message.id]) {
const response = message as pxt.editor.CloudProxyResponse;
this.pendingMessages[message.id](response);

Check failure

Code scanning / CodeQL

Unvalidated dynamic method call High

Invocation of method with
user-controlled
name may dispatch to unexpected target and cause an exception.

Copilot Autofix AI about 1 month ago

To fix the problem, we need to validate that message.id is a valid key in this.pendingMessages and that the corresponding value is a function before invoking it. This can be achieved by using the hasOwnProperty method to check for the existence of the key and typeof to ensure the value is a function.

Suggested changeset 1
webapp/src/minecraftAuthClient.ts

Autofix patch

Autofix patch
Run the following command in your local git repository to apply this patch
cat << 'EOF' | git apply
diff --git a/webapp/src/minecraftAuthClient.ts b/webapp/src/minecraftAuthClient.ts
--- a/webapp/src/minecraftAuthClient.ts
+++ b/webapp/src/minecraftAuthClient.ts
@@ -16,3 +16,3 @@
             if (message.action === "cloudproxy") {
-                if (this.pendingMessages[message.id]) {
+                if (this.pendingMessages.hasOwnProperty(message.id) && typeof this.pendingMessages[message.id] === 'function') {
                     const response = message as pxt.editor.CloudProxyResponse;
EOF
@@ -16,3 +16,3 @@
if (message.action === "cloudproxy") {
if (this.pendingMessages[message.id]) {
if (this.pendingMessages.hasOwnProperty(message.id) && typeof this.pendingMessages[message.id] === 'function') {
const response = message as pxt.editor.CloudProxyResponse;
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