From 99ad7697b3328f2b7907fafef00559704659a03a Mon Sep 17 00:00:00 2001
From: DoView1 <248995866+DoView1@users.noreply.github.com>
Date: Sat, 30 May 2026 13:28:12 +0900
Subject: [PATCH] fix: reject zero screen dimensions

---
 .../src/record-schema.ts                      |   8 +-
 .../record-schema.test.ts                     | 119 ++++++++++++++++++
 2 files changed, 123 insertions(+), 4 deletions(-)
 create mode 100644 test/generator-networks-creator/record-schema.test.ts

diff --git a/packages/generator-networks-creator/src/record-schema.ts b/packages/generator-networks-creator/src/record-schema.ts
index bb572359..da75bcb1 100644
--- a/packages/generator-networks-creator/src/record-schema.ts
+++ b/packages/generator-networks-creator/src/record-schema.ts
@@ -247,10 +247,10 @@ export async function getRecordSchema() {
                             height: z.number().positive(),
                             availWidth: z.number().positive(),
                             availHeight: z.number().positive(),
-                            clientWidth: z.number().nonnegative(),
-                            clientHeight: z.number().nonnegative(),
-                            innerWidth: z.number().nonnegative(),
-                            innerHeight: z.number().nonnegative(),
+                            clientWidth: z.number().positive(),
+                            clientHeight: z.number().positive(),
+                            innerWidth: z.number().positive(),
+                            innerHeight: z.number().positive(),
                             outerWidth: z.number().positive(),
                             outerHeight: z.number().positive(),
                             colorDepth: z.number().positive().optional(),
diff --git a/test/generator-networks-creator/record-schema.test.ts b/test/generator-networks-creator/record-schema.test.ts
new file mode 100644
index 00000000..a22e9f5c
--- /dev/null
+++ b/test/generator-networks-creator/record-schema.test.ts
@@ -0,0 +1,119 @@
+import { getRecordSchema } from '../../packages/generator-networks-creator/src/record-schema';
+
+import { describe, expect, test, vi } from 'vitest';
+
+vi.mock('node-fetch', () => ({
+    default: vi.fn(async () => ({
+        json: async () => [],
+    })),
+}));
+
+const userAgent =
+    'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/100.0.4896.127 Safari/537.36';
+
+function createRecord() {
+    return {
+        requestFingerprint: {
+            headers: {
+                'user-agent': userAgent,
+            },
+            httpVersion: '2',
+        },
+        browserFingerprint: {
+            appVersion: userAgent.replace('Mozilla/', ''),
+            hardwareConcurrency: 8,
+            multimediaDevices: {
+                speakers: [],
+                micros: [],
+                webcams: [],
+            },
+            extraProperties: {},
+            plugins: [],
+            mimeTypes: [],
+            deviceMemory: 8,
+            oscpu: null,
+            battery: null,
+            platform: 'MacIntel',
+            doNotTrack: null,
+            audioCodecs: {
+                ogg: 'probably',
+                mp3: 'probably',
+                wav: 'probably',
+                m4a: 'maybe',
+                aac: 'probably',
+            },
+            videoCodecs: {
+                ogg: '',
+                h264: 'probably',
+                webm: 'probably',
+            },
+            language: 'en-US',
+            languages: ['en-US', 'en'],
+            product: 'Gecko',
+            appName: 'Netscape',
+            appCodeName: 'Mozilla',
+            maxTouchPoints: 0,
+            productSub: '20030107',
+            vendor: 'Google Inc.',
+            vendorSub: '',
+            videoCard: {
+                vendor: 'Google Inc. (ATI Technologies Inc.)',
+                renderer:
+                    'ANGLE (ATI Technologies Inc., AMD Radeon Pro 455 OpenGL Engine, OpenGL 4.1)',
+            },
+            fonts: [],
+            screen: {
+                availTop: 25,
+                availLeft: 0,
+                pageXOffset: 0,
+                pageYOffset: 0,
+                screenX: 0,
+                hasHDR: false,
+                width: 1440,
+                height: 900,
+                availWidth: 1440,
+                availHeight: 875,
+                clientWidth: 1284,
+                clientHeight: 773,
+                innerWidth: 1284,
+                innerHeight: 773,
+                outerWidth: 1284,
+                outerHeight: 858,
+                colorDepth: 24,
+                pixelDepth: 24,
+                devicePixelRatio: 2,
+            },
+            userAgent,
+        },
+    };
+}
+
+describe('Record schema screen validation', () => {
+    test('rejects zero viewport and client dimensions', async () => {
+        const recordSchema = await getRecordSchema();
+
+        for (const property of [
+            'clientWidth',
+            'clientHeight',
+            'innerWidth',
+            'innerHeight',
+        ] as const) {
+            const record = createRecord();
+            record.browserFingerprint.screen[property] = 0;
+
+            expect(recordSchema.safeParse(record).success).toBe(false);
+        }
+    });
+
+    test('keeps zero offsets valid', async () => {
+        const recordSchema = await getRecordSchema();
+
+        const record = createRecord();
+
+        expect(record.browserFingerprint.screen.availLeft).toBe(0);
+        expect(record.browserFingerprint.screen.pageXOffset).toBe(0);
+        expect(record.browserFingerprint.screen.pageYOffset).toBe(0);
+        expect(record.browserFingerprint.screen.screenX).toBe(0);
+        expect(recordSchema.safeParse(record).success).toBe(true);
+    });
+});