Develop #252
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Develop #252
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WalkthroughThis pull request introduces conditional URL handling for WebGL builds by modifying URLs to route image and file requests through a proxy. In the Changes
Sequence Diagram(s)sequenceDiagram
participant L as LoadImageSprite
participant D as Debug.Log
participant C as CreateAndOutputSpriteFromImageFile
Note over L: Running in WebGL?
L->>L: Check if URL starts with "https://" and lacks proxy prefix
alt Condition met
L->>L: Modify URL by prepending proxy
L->>D: Log modified URL
end
L->>C: Call CreateAndOutputSpriteFromImageFile(modified URL)
sequenceDiagram
participant S as SaveUrlToFile
participant D as Debug.Log
participant F as FileSaveOperation
Note over S: Processing URL in WebGL
S->>S: Check if URL starts with "https://" and lacks proxy prefix
alt Condition met
S->>S: Prepend proxy prefix to URL
S->>D: Log modified URL
end
S->>F: Execute file save operation with modified URL
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Actionable comments posted: 2
🧹 Nitpick comments (1)
Assets/Scripts/UnityExtensionMethods/UnityFileMethods.cs (1)
233-237: Add error handling for proxy failures.The code should handle proxy-specific errors gracefully. Consider:
- Adding specific error messages for proxy failures
- Implementing fallback logic
- Adding telemetry for proxy performance
#if UNITY_WEBGL - if (url.StartsWith("https://") && !url.StartsWith("https://cgs.games/api/proxy/")) + try { - url = "https://cgs.games/api/proxy/" + url[8..]; - Debug.Log("CGS Games WebGL url : " + url); + url = WebGLUtils.GetProxiedUrl(url); + Debug.Log($"CGS Games WebGL url: {url}"); + } + catch (Exception ex) + { + Debug.LogError($"Failed to process URL through proxy: {ex.Message}"); + yield break; } #endif
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📒 Files selected for processing (2)
Assets/Scripts/FinolDigital.Cgs.Json.Unity/ImageQueueService.cs(1 hunks)Assets/Scripts/UnityExtensionMethods/UnityFileMethods.cs(1 hunks)
⏰ Context from checks skipped due to timeout of 90000ms (2)
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- GitHub Check: Unit Tests
🔇 Additional comments (1)
Assets/Scripts/FinolDigital.Cgs.Json.Unity/ImageQueueService.cs (1)
46-51: Verify proxy security and reliability.The code routes all HTTPS requests through a proxy service. Please ensure:
- The proxy service is secure and reliable
- Rate limits and error handling are in place
- Privacy implications are documented
❌ Verification inconclusive
🌐 Web query:
What security considerations should be taken into account when using a proxy service for WebGL builds?💡 Result:
When integrating proxy services with WebGL builds, security considerations span both WebGL-specific vulnerabilities and general proxy-server risks. Here’s a structured breakdown of key factors:
1. Secure Data Transmission
- Enforce HTTPS/SSL/TLS:
All communications between the WebGL build and the proxy should use HTTPS to prevent man-in-the-middle (MITM) attacks[1][3][6]. Ensure SSL/TLS certificates from the proxy are valid and trusted by clients to avoid browser warnings[6].- End-to-End Encryption:
Proxy servers must encrypt traffic between users and target servers to protect sensitive data like login credentials or API keys[3][4].2. Proxy Configuration Risks
- Avoid Free/Unverified Proxies:
Free proxies often lack encryption, log user data, or inject malware[3][5]. Opt for reputable paid providers with transparent privacy policies[5][7].- Mitigate Logging Risks:
Verify that the proxy does not store unencrypted IP addresses or request data[3]. Use providers offering IP whitelisting alongside username/password authentication[3].3. Cross-Origin Resource Sharing (CORS)
- Proper CORS Headers:
WebGL’s networking relies on browser-implemented CORS for cross-domain requests. Ensure the proxy server correctly configures CORS headers (e.g.,Access-Control-Allow-Origin) to avoid blocked requests[9].- Sanitize External Resources:
Validate textures, shaders, or 3D models loaded via the proxy to prevent malicious file uploads or code injection[1].4. Authentication and Access Control
- Strong Authentication:
Enforce multi-factor authentication (MFA) for proxy access to prevent unauthorized use[3].- Feature Policy Restrictions:
Limit WebGL usage to trusted domains using HTTP headers or<iframe allow="webgl">attributes to reduce attack surfaces[1].5. Monitoring and Maintenance
- Regular Updates:
Keep proxy server software patched to address vulnerabilities like malware or zero-day exploits[3][4].- Activity Logging:
Monitor traffic for anomalies (e.g., unexpected data transfers) that could indicate breaches[3].6. Reverse Proxy Considerations
- Server-Side Security:
Reverse proxies require hardened backend servers, as they expose endpoints publicly. Use firewalls and restrict internal network access[10].- SSL Inspection Risks:
If using SSL inspection (common in enterprises), ensure client devices trust the proxy’s root certificate to avoid connectivity issues with Unity services or WebGL builds[6].
Key Risks to Mitigate
Risk Type Mitigation Strategy MITM Attacks Use SSL/TLS encryption[1][3][6] Data Exfiltration Validate inputs/outputs; avoid free proxies[1][5] Malware Injection Source proxies from verified providers[3][5] CORS Failures Configure headers correctly; test cross-origin requests[9] By combining WebGL security best practices (e.g., input sanitization, CORS enforcement) with robust proxy-server policies (e.g., encryption, authentication), developers can minimize risks while maintaining performance and functionality.
Citations:
- 1: https://blog.pixelfreestudio.com/webgl-security-best-practices-ensuring-safe-3d-web-experiences/
- 2: https://www.oloid.ai/blog/what-is-a-proxy-server/
- 3: https://iproyal.com/blog/proxy-server-security/
- 4: https://www.browserscan.net/blog/proxy-servers/
- 5: https://crawlbase.com/blog/are-proxies-safe/
- 6: https://docs.unity3d.com/2023.1/Documentation/Manual/ent-proxy-cert-trust.html
- 7: https://www.upguard.com/blog/proxy-server
- 8: https://vpnoverview.com/privacy/anonymous-browsing/webrtc-and-webgl-leaks/
- 9: https://docs.unity3d.com/560/Documentation/Manual/webgl-networking.html
- 10: https://forums.lawrencesystems.com/t/reverse-proxy-understanding-the-potential-security-issues/18743?page=2
Action Required: Verify External Proxy Service Security, Rate Limiting, and Error Handling
The URL‐rewriting code correctly routes HTTPS requests through the proxy by prepending the base URL. However, it does not itself enforce rate limits, error handling, or log privacy details. Based on the web query response, please ensure that:
- Secure Data Transmission: The proxy at
https://cgs.games/api/proxy/uses valid SSL/TLS certificates and maintains end-to-end encryption.- Rate Limiting & Error Handling: The proxy service implements robust rate limiting and proper error handling (e.g., returning appropriate HTTP status codes, logging failures) to avoid overloading or misuse.
- Privacy and Logging: Any data logged or passed through the proxy is handled in line with your privacy policies, and sensitive information is not inadvertently exposed.
- CORS & Authentication: Verify that the proxy configures the necessary CORS headers and uses secure authentication if applicable.
These security considerations are critical and need to be verified on the proxy service itself (or its documentation), as the client code only handles URL transformation.
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