dc401f49ea
While Origin is defined in the HTML spec - this leaves us with quite an awkward relationship as the URL spec makes use of AO's from what is defined in the HTML spec. To simplify this factoring, relocate Origin into LibURL.
126 lines
3.8 KiB
C++
126 lines
3.8 KiB
C++
/*
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* Copyright (c) 2023, Tim Flynn <trflynn89@serenityos.org>
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* Copyright (c) 2024, Andreas Kling <andreas@ladybird.org>
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* Copyright (c) 2024, Shannon Booth <shannon@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <AK/StringBuilder.h>
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#include <LibURL/Origin.h>
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#include <LibURL/URL.h>
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#include <LibWeb/Crypto/Crypto.h>
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#include <LibWeb/DOM/Document.h>
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#include <LibWeb/FileAPI/Blob.h>
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#include <LibWeb/FileAPI/BlobURLStore.h>
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#include <LibWeb/HTML/Scripting/Environments.h>
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namespace Web::FileAPI {
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BlobURLStore& blob_url_store()
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{
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static HashMap<String, BlobURLEntry> store;
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return store;
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}
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// https://w3c.github.io/FileAPI/#unicodeBlobURL
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ErrorOr<String> generate_new_blob_url()
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{
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// 1. Let result be the empty string.
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StringBuilder result;
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// 2. Append the string "blob:" to result.
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TRY(result.try_append("blob:"sv));
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// 3. Let settings be the current settings object
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auto& settings = HTML::current_settings_object();
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// 4. Let origin be settings’s origin.
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auto origin = settings.origin();
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// 5. Let serialized be the ASCII serialization of origin.
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auto serialized = origin.serialize();
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// 6. If serialized is "null", set it to an implementation-defined value.
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if (serialized == "null"sv)
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serialized = "ladybird"sv;
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// 7. Append serialized to result.
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TRY(result.try_append(serialized));
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// 8. Append U+0024 SOLIDUS (/) to result.
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TRY(result.try_append('/'));
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// 9. Generate a UUID [RFC4122] as a string and append it to result.
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auto uuid = TRY(Crypto::generate_random_uuid());
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TRY(result.try_append(uuid));
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// 10. Return result.
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return result.to_string();
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}
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// https://w3c.github.io/FileAPI/#add-an-entry
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ErrorOr<String> add_entry_to_blob_url_store(JS::NonnullGCPtr<Blob> object)
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{
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// 1. Let store be the user agent’s blob URL store.
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auto& store = blob_url_store();
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// 2. Let url be the result of generating a new blob URL.
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auto url = TRY(generate_new_blob_url());
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// 3. Let entry be a new blob URL entry consisting of object and the current settings object.
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BlobURLEntry entry { object, HTML::current_settings_object() };
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// 4. Set store[url] to entry.
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TRY(store.try_set(url, move(entry)));
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// 5. Return url.
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return url;
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}
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// https://w3c.github.io/FileAPI/#removeTheEntry
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ErrorOr<void> remove_entry_from_blob_url_store(StringView url)
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{
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// 1. Let store be the user agent’s blob URL store;
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auto& store = blob_url_store();
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// 2. Let url string be the result of serializing url.
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auto url_string = TRY(URL::URL { url }.to_string());
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// 3. Remove store[url string].
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store.remove(url_string);
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return {};
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}
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// https://w3c.github.io/FileAPI/#lifeTime
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void run_unloading_cleanup_steps(JS::NonnullGCPtr<DOM::Document> document)
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{
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// 1. Let environment be the Document's relevant settings object.
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auto& environment = document->relevant_settings_object();
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// 2. Let store be the user agent’s blob URL store;
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auto& store = FileAPI::blob_url_store();
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// 3. Remove from store any entries for which the value's environment is equal to environment.
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store.remove_all_matching([&](auto&, auto& value) {
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return value.environment == &environment;
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});
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}
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// https://w3c.github.io/FileAPI/#blob-url-resolve
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Optional<BlobURLEntry> resolve_a_blob_url(URL::URL const& url)
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{
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// 1. Assert: url’s scheme is "blob".
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VERIFY(url.scheme() == "blob"sv);
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// 2. Let store be the user agent’s blob URL store.
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auto& store = blob_url_store();
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// 3. Let url string be the result of serializing url with the exclude fragment flag set.
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auto url_string = MUST(String::from_byte_string(url.serialize(URL::ExcludeFragment::Yes)));
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// 4. If store[url string] exists, return store[url string]; otherwise return failure.
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return store.get(url_string);
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}
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}
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