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62 changes: 45 additions & 17 deletions
62
ClientCredentialsFlows/ServiceApi/SecurityHeadersDefinitions.cs
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,39 +1,67 @@ | ||
| using Microsoft.AspNetCore.Builder; | ||
| using Microsoft.AspNetCore.Builder; | ||
|
|
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| namespace ServiceApi; | ||
|
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| public static class SecurityHeadersDefinitions | ||
| { | ||
| private static HeaderPolicyCollection? policy; | ||
|
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| public static HeaderPolicyCollection GetHeaderPolicyCollection(bool isDev) | ||
| { | ||
| var policy = new HeaderPolicyCollection() | ||
| // Avoid building a new HeaderPolicyCollection on every request for performance reasons. | ||
| // Where possible, cache and reuse HeaderPolicyCollection instances. | ||
| if (policy != null) return policy; | ||
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| policy = new HeaderPolicyCollection() | ||
| .AddFrameOptionsDeny() | ||
| .AddContentTypeOptionsNoSniff() | ||
| .AddReferrerPolicyStrictOriginWhenCrossOrigin() | ||
| .RemoveServerHeader() | ||
| .AddCrossOriginOpenerPolicy(builder => builder.SameOrigin()) | ||
| .AddCrossOriginResourcePolicy(builder => builder.SameOrigin()) | ||
| .AddCrossOriginEmbedderPolicy(builder => builder.RequireCorp()) | ||
| .AddContentSecurityPolicy(builder => | ||
| .AddCrossOriginResourcePolicy(builder => builder.SameOrigin()) | ||
| .AddPermissionsPolicyWithDefaultSecureDirectives(); | ||
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| AddCspHstsDefinitions(isDev, policy); | ||
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| return policy; | ||
| } | ||
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| private static void AddCspHstsDefinitions(bool isDev, HeaderPolicyCollection policy) | ||
| { | ||
| if (!isDev) | ||
| { | ||
| policy.AddContentSecurityPolicy(builder => | ||
| { | ||
| builder.AddObjectSrc().None(); | ||
| builder.AddBlockAllMixedContent(); | ||
| builder.AddImgSrc().None(); | ||
| builder.AddFormAction().None(); | ||
| builder.AddFontSrc().None(); | ||
| builder.AddStyleSrc().None(); | ||
| builder.AddScriptSrc().None(); | ||
| builder.AddBaseUri().Self(); | ||
| builder.AddFrameAncestors().None(); | ||
| builder.AddCustomDirective("require-trusted-types-for", "'script'"); | ||
| }); | ||
| // maxage = one year in seconds | ||
| policy.AddStrictTransportSecurityMaxAgeIncludeSubDomains(maxAgeInSeconds: 60 * 60 * 24 * 365); | ||
| } | ||
| else | ||
| { | ||
| // allow swagger UI for dev | ||
| policy.AddContentSecurityPolicy(builder => | ||
| { | ||
| builder.AddObjectSrc().None(); | ||
| builder.AddBlockAllMixedContent(); | ||
| builder.AddImgSrc().Self().From("data:"); | ||
| builder.AddFormAction().Self(); | ||
| builder.AddFontSrc().Self(); | ||
| builder.AddStyleSrc().Self(); | ||
| builder.AddStyleSrc().Self().UnsafeInline(); | ||
| builder.AddScriptSrc().Self().UnsafeInline(); //.WithNonce(); | ||
| builder.AddBaseUri().Self(); | ||
| builder.AddScriptSrc().WithNonce(); | ||
| builder.AddFrameAncestors().None(); | ||
| }) | ||
| .RemoveServerHeader() | ||
| .AddPermissionsPolicyWithDefaultSecureDirectives(); | ||
|
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| if (!isDev) | ||
| { | ||
| // maxage = one year in seconds | ||
| policy.AddStrictTransportSecurityMaxAgeIncludeSubDomains(); | ||
| }); | ||
| } | ||
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| return policy; | ||
| } | ||
| } | ||
| } |