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Add better logging to Discord interactions endpoint

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cgen-783e739449a44585a2037d1be0728386
This commit is contained in:
Builder.io 2025-11-05 17:23:00 +00:00
parent 42def5affe
commit ff18813573
1 changed files with 48 additions and 30 deletions
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78
server/index.ts
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@ -12,26 +12,38 @@ const handleDiscordInteractions = (
) => {
const signature = req.get("x-signature-ed25519");
const timestamp = req.get("x-signature-timestamp");
const body =
req.body instanceof Buffer
? req.body.toString("utf8")
: JSON.stringify(req.body);
const rawBody = req.body instanceof Buffer ? req.body : Buffer.from(JSON.stringify(req.body), "utf8");
const bodyString = rawBody.toString("utf8");
const publicKey = process.env.DISCORD_PUBLIC_KEY;
console.log("[Discord] ===== Interaction Request =====");
console.log("[Discord] Signature present:", !!signature);
console.log("[Discord] Timestamp present:", !!timestamp);
console.log("[Discord] Public key configured:", !!publicKey);
console.log("[Discord] Body length:", bodyString.length);
if (!publicKey) {
console.warn("[Discord] DISCORD_PUBLIC_KEY not configured");
console.error("[Discord] DISCORD_PUBLIC_KEY not configured");
return res.status(401).json({ error: "Public key not configured" });
}
if (!signature || !timestamp) {
console.error("[Discord] Missing signature or timestamp headers");
return res.status(401).json({ error: "Missing signature or timestamp" });
}
// Verify request signature using Ed25519
try {
const message = `${timestamp}${bodyString}`;
const signatureBuffer = Buffer.from(signature, "hex");
console.log("[Discord] Creating verifier for ed25519...");
const verifier = createVerify("ed25519");
verifier.update(`${timestamp}${body}`);
const isValid = verifier.verify(publicKey, Buffer.from(signature, "hex"));
verifier.update(message);
const isValid = verifier.verify(publicKey, signatureBuffer);
console.log("[Discord] Signature valid:", isValid);
if (!isValid) {
console.warn("[Discord] Invalid signature for interaction");
@ -39,34 +51,40 @@ const handleDiscordInteractions = (
}
} catch (e: any) {
console.error("[Discord] Signature verification error:", e?.message);
return res.status(401).json({ error: "Signature verification failed" });
console.error("[Discord] Stack:", e?.stack);
return res.status(401).json({ error: "Signature verification failed: " + e?.message });
}
// Parse the interaction
const interaction = typeof body === "string" ? JSON.parse(body) : req.body;
try {
const interaction = JSON.parse(bodyString);
// Handle PING interaction (Discord Activity verification)
if (interaction.type === 1) {
console.log("[Discord] PING received, responding with PONG");
return res.json({ type: 1 });
// Handle PING interaction (Discord Activity verification)
if (interaction.type === 1) {
console.log("[Discord] ✓ PING received, responding with PONG");
return res.json({ type: 1 });
}
// Handle other interaction types
if (
interaction.type === 2 ||
interaction.type === 3 ||
interaction.type === 4 ||
interaction.type === 5
) {
console.log("[Discord] Interaction received:", interaction.type);
return res.json({
type: 4,
data: { content: "Activity received your interaction" },
});
}
console.warn("[Discord] Unknown interaction type:", interaction.type);
return res.status(400).json({ error: "Unknown interaction type" });
} catch (e: any) {
console.error("[Discord] Failed to parse interaction:", e?.message);
return res.status(400).json({ error: "Invalid JSON" });
}
// Handle other interaction types
if (
interaction.type === 2 ||
interaction.type === 3 ||
interaction.type === 4 ||
interaction.type === 5
) {
console.log("[Discord] Interaction received:", interaction.type);
return res.json({
type: 4,
data: { content: "Activity received your interaction" },
});
}
console.warn("[Discord] Unknown interaction type:", interaction.type);
return res.status(400).json({ error: "Unknown interaction type" });
};
export function createServer() {