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Fix Unicode chat sanitization

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This commit is contained in:
Alexander Sellite 2026-08-21 09:23:28 -04:00
parent c20bb35929
commit 91b54e4a01
2 changed files with 43 additions and 14 deletions
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39
tests/chat_validation.gd
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@ -1,21 +1,38 @@
extends SceneTree
const MainScene: PackedScene = preload("res://main/main.tscn")
func _initialize() -> void:
call_deferred("_run")
func _run() -> void:
## Regular whitespace should be stripped
assert(NetworkChatProtocol.sanitize_body(" a") == "a", "Leading space not trimmed")
assert(NetworkChatProtocol.sanitize_body("b ") == "b", "Trailing space not trimmed")
assert(NetworkChatProtocol.sanitize_body("a b") == "a b", "Innocent whitespace culled")
## Some examples of Unicode whitespace that should be stripped
func _run() -> void:
assert(NetworkChatProtocol.sanitize_body(42).is_empty())
assert(NetworkChatProtocol.sanitize_body(" a ") == "a")
assert(NetworkChatProtocol.sanitize_body("a b") == "a b")
assert(NetworkChatProtocol.sanitize_body("a\tb\nc") == "a b c")
assert(NetworkChatProtocol.sanitize_body(" !hello!? ") == "!hello!?")
assert(NetworkChatProtocol.sanitize_body("!!!") == "!!!")
const em_space := " " # U+2003 EM SPACE
assert(NetworkChatProtocol.sanitize_body(em_space + "a") == "a")
const braille_space := "⠀" # U+2800 BRAILLE PATTERN BLANK
assert(NetworkChatProtocol.sanitize_body(braille_space + "a") == "a")
const zero_width_space := "​" # U+200B ZERO WIDTH SPACE
const braille_blank := "⠀" # U+2800 BRAILLE PATTERN BLANK
const invisible_padding := em_space + zero_width_space + braille_blank
assert(
NetworkChatProtocol.sanitize_body(invisible_padding + "a" + invisible_padding)
== "a"
)
assert(NetworkChatProtocol.sanitize_body(invisible_padding).is_empty())
assert(NetworkChatProtocol.sanitize_body(" \t\n" + invisible_padding).is_empty())
assert(
NetworkChatProtocol.sanitize_body("a".repeat(
NetworkChatProtocol.MAX_VISIBLE_CHARACTERS
)).length() == NetworkChatProtocol.MAX_VISIBLE_CHARACTERS
)
assert(
NetworkChatProtocol.sanitize_body("a".repeat(
NetworkChatProtocol.MAX_VISIBLE_CHARACTERS + 1
)).is_empty()
)
print("Chat validation: PASS")
quit(0)