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LibWeb: Make sure Blob type is not outside range 0x0020-0x007E

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This makes sure that type is set to an empty string if
BlobPropertyBag::type is outside the range 0x0020 to 0x007E.
This commit is contained in:
Kenneth Myhra 2022-08-01 20:41:53 +02:00 • committed by Linus Groh
parent 73aec263b1
commit c8c5f05de5
1 changed files with 9 additions and 2 deletions
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11
Userland/Libraries/LibWeb/FileAPI/Blob.cpp
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@ -132,10 +132,17 @@ DOM::ExceptionOr<NonnullRefPtr<Blob>> Blob::create(Optional<Vector<BlobPart>> co
String type = String::empty(); String type = String::empty();
// 3. If the type member of the options argument is not the empty string, run the following sub-steps: // 3. If the type member of the options argument is not the empty string, run the following sub-steps:
if (options.has_value() && !options->type.is_empty()) { if (options.has_value() && !options->type.is_empty()) {
// FIXME: 1. Let t be the type dictionary member. If t contains any characters outside the range U+0020 to U+007E, then set t to the empty string and return from these substeps. // 1. If the type member is provided and is not the empty string, let t be set to the type dictionary member.
// If t contains any characters outside the range U+0020 to U+007E, then set t to the empty string and return from these substeps.
// NOTE: t is set to empty string at declaration.
if (!options->type.is_empty()) {
if (is_basic_latin(options->type))
type = options->type;
}
// 2. Convert every character in t to ASCII lowercase. // 2. Convert every character in t to ASCII lowercase.
type = options->type.to_lowercase(); if (!type.is_empty())
type = options->type.to_lowercase();
} }
// 4. Return a Blob object referring to bytes as its associated byte sequence, with its size set to the length of bytes, and its type set to the value of t from the substeps above. // 4. Return a Blob object referring to bytes as its associated byte sequence, with its size set to the length of bytes, and its type set to the value of t from the substeps above.