From 77a609758bb80bac9497d2e3988550f8be578407 Mon Sep 17 00:00:00 2001 From: Rory& Date: Mon, 23 Feb 2026 02:03:20 +0100 Subject: Initial commit --- .../HTMLPatches/StripNoncesPatch.cs | 36 ++++++++++++++++++++++ 1 file changed, 36 insertions(+) create mode 100644 ReferenceClientProxyImplementation/Patches/Implementations/HTMLPatches/StripNoncesPatch.cs (limited to 'ReferenceClientProxyImplementation/Patches/Implementations/HTMLPatches/StripNoncesPatch.cs') diff --git a/ReferenceClientProxyImplementation/Patches/Implementations/HTMLPatches/StripNoncesPatch.cs b/ReferenceClientProxyImplementation/Patches/Implementations/HTMLPatches/StripNoncesPatch.cs new file mode 100644 index 0000000..6c5f312 --- /dev/null +++ b/ReferenceClientProxyImplementation/Patches/Implementations/HTMLPatches/StripNoncesPatch.cs @@ -0,0 +1,36 @@ +using System.Text; +using System.Text.RegularExpressions; +using ReferenceClientProxyImplementation.Configuration; + +namespace ReferenceClientProxyImplementation.Patches.Implementations.HTMLPatches; + +public partial class StripNoncesPatch(ProxyConfiguration config) : IPatch { + public int GetOrder() => 0; + + public string GetName() => "Strip nonces/integrity from html"; + public bool Applies(string relativeName, byte[] content) => relativeName is "app.html" or "developers.html" or "popout.html"; + + public async Task Execute(string _, byte[] content) { + var stringContent = Encoding.UTF8.GetString(content); + stringContent = HtmlScriptIntegrityRegex().Replace( + HtmlScriptNonceRegex().Replace( + JsElementNonceRegex().Replace( + stringContent, + "" + ), + "" + ), + "" + ); + return Encoding.UTF8.GetBytes(stringContent); + } + + [GeneratedRegex("\\snonce=\"[a-zA-Z0-9+/=]+\"")] + private static partial Regex HtmlScriptNonceRegex(); + + [GeneratedRegex("\\w.nonce='[a-zA-Z0-9+/=]+';")] + private static partial Regex JsElementNonceRegex(); + + [GeneratedRegex(@"\sintegrity=""[a-zA-Z0-9+/=\-\s]+""")] + private static partial Regex HtmlScriptIntegrityRegex(); +} \ No newline at end of file -- cgit 1.5.1