mirror of
https://github.com/LadybirdBrowser/ladybird
synced 2026-04-25 17:25:08 +02:00
18aee32084
This adds support for intercepting network requests and serving local
file content instead. When a URL matches an entry in the substitution
map, the local file is served while preserving the original URL's
origin for cross-origin checks.
Usage:
Ladybird --resource-map=/path/to/map.json
The JSON file format is:
{
"substitutions": [
{
"url": "https://example.com/script.js",
"file": "/path/to/local/script.js",
"content_type": "application/javascript",
"status_code": 200
}
]
}
Fields:
- url (required): Exact URL to intercept (query string and fragment
are stripped before matching)
- file (required): Absolute path to local file to serve
- content_type (optional): Override Content-Type header (defaults to
guessing from filename)
- status_code (optional): HTTP status code (defaults to 200)
This is incredibly useful for debugging production websites: you can
intercept any script, stylesheet, or other resource and replace it with
a local copy containing your own debug instrumentation, console.log
statements, or experimental fixes - all without modifying the actual
site or setting up a local dev server.
37 lines
754 B
C++
37 lines
754 B
C++
/*
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* Copyright (c) 2026, Andreas Kling <andreas@ladybird.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#pragma once
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#include <AK/ByteString.h>
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#include <AK/HashMap.h>
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#include <AK/NonnullOwnPtr.h>
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#include <AK/Optional.h>
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#include <AK/String.h>
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#include <LibURL/URL.h>
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namespace RequestServer {
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struct ResourceSubstitution {
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ByteString file_path;
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Optional<String> content_type;
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u32 status_code { 200 };
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};
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class ResourceSubstitutionMap {
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public:
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static ErrorOr<NonnullOwnPtr<ResourceSubstitutionMap>> load_from_file(StringView path);
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Optional<ResourceSubstitution const&> lookup(URL::URL const&) const;
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private:
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ResourceSubstitutionMap() = default;
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HashMap<String, ResourceSubstitution> m_substitutions;
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};
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}
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