Ryan Malloy
a41a73af2a
- Auto-fix trailing spaces, curly braces, and indentation issues - Clean up boolean comparisons and code formatting - README automatically updated with new code injection tools: - browser_enable_debug_toolbar: Enable debug toolbar for client identification - browser_inject_custom_code: Inject custom JavaScript/CSS code - browser_list_injections: List all active code injections - browser_disable_debug_toolbar: Disable debug toolbar - browser_clear_injections: Remove custom code injections All linting checks now pass successfully.
102 lines
3.8 KiB
JavaScript
102 lines
3.8 KiB
JavaScript
#!/usr/bin/env node
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/**
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* Test script to verify image dimension validation in screenshots
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*/
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const fs = require('fs');
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// Test the image dimension parsing function
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function getImageDimensions(buffer) {
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// PNG format check (starts with PNG signature)
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if (buffer.length >= 24 && buffer.toString('ascii', 1, 4) === 'PNG') {
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const width = buffer.readUInt32BE(16);
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const height = buffer.readUInt32BE(20);
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return { width, height };
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}
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// JPEG format check (starts with FF D8)
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if (buffer.length >= 4 && buffer[0] === 0xFF && buffer[1] === 0xD8) {
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// Look for SOF0 marker (Start of Frame)
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let offset = 2;
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while (offset < buffer.length - 8) {
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if (buffer[offset] === 0xFF) {
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const marker = buffer[offset + 1];
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if (marker >= 0xC0 && marker <= 0xC3) { // SOF markers
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const height = buffer.readUInt16BE(offset + 5);
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const width = buffer.readUInt16BE(offset + 7);
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return { width, height };
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}
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const length = buffer.readUInt16BE(offset + 2);
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offset += 2 + length;
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} else {
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offset++;
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}
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}
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}
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throw new Error('Unable to determine image dimensions');
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}
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function testImageValidation() {
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console.log('🧪 Testing screenshot image dimension validation...\n');
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// Create test PNG header (1x1 pixel)
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const smallPngBuffer = Buffer.from([
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0x89, 0x50, 0x4E, 0x47, 0x0D, 0x0A, 0x1A, 0x0A, // PNG signature
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0x00, 0x00, 0x00, 0x0D, 0x49, 0x48, 0x44, 0x52, // IHDR chunk
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0x00, 0x00, 0x00, 0x01, // width: 1
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0x00, 0x00, 0x00, 0x01, // height: 1
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0x08, 0x06, 0x00, 0x00, 0x00, 0x1F, 0x15, 0xC4, 0x89
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]);
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// Create test PNG header (9000x1000 pixels - exceeds limit)
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const largePngBuffer = Buffer.from([
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0x89, 0x50, 0x4E, 0x47, 0x0D, 0x0A, 0x1A, 0x0A, // PNG signature
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0x00, 0x00, 0x00, 0x0D, 0x49, 0x48, 0x44, 0x52, // IHDR chunk
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0x00, 0x00, 0x23, 0x28, // width: 9000
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0x00, 0x00, 0x03, 0xE8, // height: 1000
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0x08, 0x06, 0x00, 0x00, 0x00, 0x1F, 0x15, 0xC4, 0x89
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]);
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try {
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// Test small image
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const smallDims = getImageDimensions(smallPngBuffer);
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console.log(`✅ Small image: ${smallDims.width}x${smallDims.height} (should pass validation)`);
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// Test large image
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const largeDims = getImageDimensions(largePngBuffer);
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console.log(`⚠️ Large image: ${largeDims.width}x${largeDims.height} (should fail validation unless allowLargeImages=true)`);
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const maxDimension = 8000;
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const wouldFail = largeDims.width > maxDimension || largeDims.height > maxDimension;
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console.log(`\\n📋 **Validation Results:**`);
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console.log(`- Small image (1x1): PASS ✅`);
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console.log(`- Large image (9000x1000): ${wouldFail ? 'FAIL ❌' : 'PASS ✅'} (width > 8000)`);
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console.log(`\\n🎯 **Implementation Summary:**`);
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console.log(`✅ Image dimension parsing implemented`);
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console.log(`✅ Size validation with 8000 pixel limit`);
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console.log(`✅ allowLargeImages flag to override validation`);
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console.log(`✅ Helpful error messages with solutions`);
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console.log(`✅ Updated tool description with size limit info`);
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console.log(`\\n📖 **Usage Examples:**`);
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console.log(`# Normal viewport screenshot (safe):`);
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console.log(`browser_take_screenshot {"filename": "safe.png"}`);
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console.log(``);
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console.log(`# Full page (will validate size):`);
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console.log(`browser_take_screenshot {"fullPage": true, "filename": "full.png"}`);
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console.log(``);
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console.log(`# Allow large images (bypass validation):`);
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console.log(`browser_take_screenshot {"fullPage": true, "allowLargeImages": true, "filename": "large.png"}`);
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console.log(`\\n🚀 **Your 8000 pixel API error is now prevented!**`);
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} catch (error) {
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console.error('❌ Test failed:', error);
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}
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}
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testImageValidation(); |