frist

src/generator/payload.js

@@ -0,0 +1,81 @@
+/**
+ * Payload Builder - Assembling the Final Form
+ *
+ * Takes all our crafted components and stitches them into
+ * the exact JSON structure hCaptcha expects.
+ */
+
+export class PayloadBuilder {
+    /**
+     * Build the getcaptcha request payload
+     */
+    static build({ siteKey, host, n, c, motionData }) {
+        const now = Date.now();
+
+        return {
+            v: '1',                           // Protocol version
+            sitekey: siteKey,
+            host,
+            hl: 'en',                         // Language
+
+            // Challenge response
+            n,                                // Proof of work from hsw.js
+            c: JSON.stringify(c),             // Config from checksiteconfig
+
+            // Motion telemetry
+            motionData: JSON.stringify(motionData),
+
+            // Timestamps
+            prev: {
+                escaped: false,
+                passed: false,
+                expiredChallenge: false,
+                expiredResponse: false,
+            },
+
+            // Widget metadata
+            d: PayloadBuilder._generateWidgetData(host, now),
+
+            // Response type
+            pst: false,                       // Previous success token
+        };
+    }
+
+    /**
+     * Generate widget embedding data
+     */
+    static _generateWidgetData(host, timestamp) {
+        return {
+            gt: 0,                            // Widget type
+            ct: timestamp - 1000,             // Creation time
+            fc: 1,                            // Frame count
+            ff: false,                        // First frame
+
+            // Fake performance metrics
+            pd: {
+                si: timestamp - 5000,         // Script init
+                ce: timestamp - 4500,         // Challenge end
+                cs: timestamp - 4000,         // Challenge start
+                re: timestamp - 500,          // Response end
+                rs: timestamp - 1000,         // Response start
+            },
+        };
+    }
+
+    /**
+     * Build form-encoded payload (alternative format)
+     */
+    static buildFormData(data) {
+        const params = new URLSearchParams();
+
+        for (const [key, value] of Object.entries(data)) {
+            if (typeof value === 'object') {
+                params.append(key, JSON.stringify(value));
+            } else {
+                params.append(key, String(value));
+            }
+        }
+
+        return params.toString();
+    }
+}