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AK: Replace the mutable String::replace API with an immutable version

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This removes the awkward String::replace API which was the only String
API which mutated the String and replaces it with a new immutable
version that returns a new String with the replacements applied. This
also fixes a couple of UAFs that were caused by the use of this API.

As an optimization an equivalent StringView::replace API was also added
to remove an unnecessary String allocations in the format of:
`String { view }.replace(...);`
This commit is contained in:
Idan Horowitz 2021-09-11 02:15:44 +03:00
parent aba4c9579f
commit 6704961c82
26 changed files with 72 additions and 118 deletions
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7
AK/URLParser.cpp
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@ -203,15 +203,12 @@ URL URLParser::parse(Badge<URL>, StringView const& raw_input, URL const* base_ur
if (start_index >= end_index)
return {};
auto processed_input = raw_input.substring_view(start_index, end_index - start_index);
String processed_input = raw_input.substring_view(start_index, end_index - start_index);
// NOTE: This replaces all tab and newline characters with nothing.
if (processed_input.contains("\t") || processed_input.contains("\n")) {
report_validation_error();
String processed_input_string(processed_input);
processed_input_string.replace("\t", "", true);
processed_input_string.replace("\n", "", true);
processed_input = processed_input_string;
processed_input = processed_input.replace("\t", "", true).replace("\n", "", true);
}
State state = State::SchemeStart;