mirror of
https://github.com/RGBCube/serenity
synced 2025-07-25 03:17:35 +00:00
LibWeb/MimeSniff: Add match an archive type pattern algorithm
This commit is contained in:
parent
d5e5a1138f
commit
f6d3ea33fa
2 changed files with 35 additions and 1 deletions
|
@ -182,6 +182,36 @@ ErrorOr<Optional<MimeType>> match_an_audio_or_video_type_pattern(ReadonlyBytes i
|
|||
return OptionalNone {};
|
||||
}
|
||||
|
||||
// https://mimesniff.spec.whatwg.org/#matching-an-archive-type-pattern
|
||||
ErrorOr<Optional<MimeType>> match_an_archive_type_pattern(ReadonlyBytes input)
|
||||
{
|
||||
// 1. Execute the following steps for each row row in the following table:
|
||||
static Array<BytePatternTableRow, 3> constexpr pattern_table {
|
||||
// The GZIP archive signature.
|
||||
BytePatternTableRow { "\x1F\x8B\x08"sv, "\xFF\xFF\xFF"sv, no_ignored_bytes, "application/x-gzip"sv },
|
||||
|
||||
// The string "PK" followed by ETX EOT, the ZIP archive signature.
|
||||
BytePatternTableRow { "\x50\x4B\x03\x04"sv, "\xFF\xFF\xFF\xFF"sv, no_ignored_bytes, "application/zip"sv },
|
||||
|
||||
// The string "Rar " followed by SUB BEL NUL, the RAR archive signature.
|
||||
BytePatternTableRow { "\x52\x61\x72\x20\x1A\x07\x00"sv, "\xFF\xFF\xFF\xFF\xFF\xFF\xFF"sv, no_ignored_bytes, "application/x-rar-compressed"sv },
|
||||
};
|
||||
|
||||
for (auto const& row : pattern_table) {
|
||||
// 1. Let patternMatched be the result of the pattern matching algorithm given input, the
|
||||
// value in the first column of row, the value in the second column of row, and the
|
||||
// value in the third column of row.
|
||||
auto pattern_matched = pattern_matching_algorithm(input, row.byte_pattern.bytes(), row.pattern_mask.bytes(), row.ignored_leading_bytes);
|
||||
|
||||
// 2. If patternMatched is true, return the value in the fourth column of row.
|
||||
if (pattern_matched)
|
||||
return MimeType::parse(row.mime_type);
|
||||
}
|
||||
|
||||
// 2. Return undefined.
|
||||
return OptionalNone {};
|
||||
}
|
||||
|
||||
// https://mimesniff.spec.whatwg.org/#rules-for-identifying-an-unknown-mime-type
|
||||
ErrorOr<MimeType> rules_for_identifying_an_unknown_mime_type(Resource const& resource, bool sniff_scriptable = false)
|
||||
{
|
||||
|
@ -314,7 +344,8 @@ ErrorOr<MimeType> rules_for_identifying_an_unknown_mime_type(Resource const& res
|
|||
if (matched_type.has_value())
|
||||
return matched_type.release_value();
|
||||
|
||||
// FIXME: 7. Set matchedType to the result of executing the archive type pattern matching algorithm given resource’s resource header.
|
||||
// 7. Set matchedType to the result of executing the archive type pattern matching algorithm given resource’s resource header.
|
||||
matched_type = TRY(match_an_archive_type_pattern(resource.resource_header()));
|
||||
|
||||
// 8. If matchedType is not undefined, return matchedType.
|
||||
if (matched_type.has_value())
|
||||
|
|
Loading…
Add table
Add a link
Reference in a new issue