mirror of
https://github.com/LadybirdBrowser/ladybird.git
synced 2024-11-22 23:50:19 +00:00
80238f29d2
When an invalid escape sequence is encountered, we now output the characters unaltered instead of crashing.
62 lines
2.3 KiB
C++
62 lines
2.3 KiB
C++
/*
|
|
* Copyright (c) 2021, Luke Wilde <lukew@serenityos.org>
|
|
*
|
|
* SPDX-License-Identifier: BSD-2-Clause
|
|
*/
|
|
|
|
#include <AK/CharacterTypes.h>
|
|
#include <LibIMAP/QuotedPrintable.h>
|
|
#include <LibTest/TestCase.h>
|
|
|
|
TEST_CASE(test_decode)
|
|
{
|
|
auto decode_equal = [](StringView input, StringView expected) {
|
|
auto decoded = MUST(IMAP::decode_quoted_printable(input));
|
|
EXPECT(decoded.bytes() == expected.bytes());
|
|
};
|
|
|
|
auto decode_equal_byte_buffer = [](StringView input, StringView expected) {
|
|
auto decoded = MUST(IMAP::decode_quoted_printable(input));
|
|
EXPECT(decoded.bytes() == expected.bytes());
|
|
};
|
|
|
|
decode_equal("hello world"sv, "hello world"sv);
|
|
decode_equal("=3D"sv, "="sv);
|
|
decode_equal("hello=\r\n world"sv, "hello world"sv);
|
|
decode_equal("=68=65=6C=6C=6F=20=\r\n=77=6F=72=6C=64"sv, "hello world"sv);
|
|
|
|
// Doesn't mistake hex sequences without a preceding '=' as an escape sequence.
|
|
decode_equal("4A=4B=4C4D"sv, "4AKL4D"sv);
|
|
|
|
// Allows lowercase escape sequences.
|
|
decode_equal("=4a=4b=4c=4d=4e=4f"sv, "JKLMNO"sv);
|
|
|
|
// Bytes for U+1F41E LADY BEETLE
|
|
decode_equal_byte_buffer("=F0=9F=90=9E"sv, "\xF0\x9F\x90\x9E"sv);
|
|
|
|
// Illegal characters. If these aren't escaped, they are simply ignored.
|
|
// Illegal characters are:
|
|
// - ASCII control bytes that aren't tab, carriage return or new line
|
|
// - Any byte above 0x7E
|
|
StringBuilder illegal_character_builder;
|
|
for (u16 byte = 0; byte <= 0xFF; ++byte) {
|
|
if (byte > 0x7E || (is_ascii_control(byte) && byte != '\t' && byte != '\r' && byte != '\n'))
|
|
illegal_character_builder.append(byte);
|
|
}
|
|
|
|
auto illegal_character_decode = MUST(IMAP::decode_quoted_printable(illegal_character_builder.to_deprecated_string()));
|
|
EXPECT(illegal_character_decode.is_empty());
|
|
|
|
// If an escape sequence is invalid the characters are output unaltered. Illegal characters are ignored as usual.
|
|
decode_equal("="sv, "="sv);
|
|
decode_equal("=Z"sv, "=Z"sv);
|
|
decode_equal("=\x7F"sv, "="sv);
|
|
decode_equal("=\x7F\x7F"sv, "="sv);
|
|
decode_equal("=A\x7F"sv, "=A"sv);
|
|
decode_equal("=A"sv, "=A"sv);
|
|
decode_equal("=AZ"sv, "=AZ"sv);
|
|
decode_equal("=\r"sv, "=\r"sv);
|
|
decode_equal("=\r\r"sv, "=\r\r"sv);
|
|
decode_equal("=\n\r"sv, "=\n\r"sv);
|
|
decode_equal("=\rA"sv, "=\rA"sv);
|
|
}
|