* fix: Move CSP to HTTP headers + add worker-src, frameDomains, baseUriDomains, permissions
Security improvements:
- CSP is now set via HTTP headers in serve.ts instead of meta tags
(meta tag CSP can be tampered with by same-origin content)
- CSP passed as query param to sandbox.html for header-based enforcement
New CSP/permissions features (borrowed from PR #158):
- frameDomains: control frame-src directive for nested iframes
- baseUriDomains: control base-uri directive
- permissions: camera, microphone, geolocation via iframe allow attribute
WebGL fix:
- Use document.write() instead of srcdoc for inner iframe content
(srcdoc creates opaque origin that breaks WebGL canvas updates)
- Add worker-src directive with blob: support (critical for WebGL apps
like CesiumJS/Three.js that use workers for tile decoding, terrain
processing, image processing)
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Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
* refactor: Remove permissions support (defer to PR #158)
Keep this PR focused on CSP security fixes only.
Permissions (camera, microphone, geolocation) will be
handled in #158.
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
* cleanup McpUiResourceCsp type usage / duplicate defs
* fix: guard against CSP injection in domain parameters
Validate CSP domain entries to reject characters that could:
- Break out of CSP directives (semicolons, newlines)
- Inject CSP keywords like 'unsafe-eval' (quotes)
- Inject multiple sources in one entry (spaces)
This prevents injection attacks where malicious domains could
override the security policy.
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Co-authored-by: Claude Opus 4.5 <noreply@anthropic.com>
8b09f4278c