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[fix] Update CSP header for blob images (upload preview) and dev livereload (#2109)

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* update CSP header for blob images (upload preview) and dev livereload websocket

* update csp for s3, update csp tests
This commit is contained in:
f0x52 2023-08-14 12:30:09 +02:00 • committed by GitHub
commit 912a104aed
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2 changed files with 17 additions and 20 deletions
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19
internal/middleware/extraheaders.go
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@ -54,19 +54,16 @@ func BuildContentSecurityPolicy() string {
// Debug is enabled, allow
// serving things from localhost
// as well (regardless of port).
policy += " localhost:*"
policy += " localhost:* ws://localhost:*"
}
// Disallow object-src as recommended https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Content-Security-Policy/object-src
policy += "; object-src 'none'"
s3Endpoint := config.GetStorageS3Endpoint()
if s3Endpoint == "" {
// S3 not configured,
// default policy is OK.
return policy
}
if config.GetStorageS3Proxy() {
// S3 is configured in proxy
// mode, default policy is OK.
if s3Endpoint == "" || config.GetStorageS3Proxy() {
// S3 not configured or in proxy mode, just allow images from self and blob:
policy += "; img-src 'self' blob:"
return policy
}
@ -88,7 +85,7 @@ func BuildContentSecurityPolicy() string {
// handle any redirects from the fileserver to object storage.
// https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Content-Security-Policy/img-src
policy += "; img-src 'self' " + s3EndpointURLStr
policy += "; img-src 'self' blob: " + s3EndpointURLStr
// https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Content-Security-Policy/media-src
policy += "; media-src 'self' " + s3EndpointURLStr