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Decode UTF-16 clipboard text (#7249)

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This commit is contained in:
David Heinemeier Hansson
2026-08-17 06:09:51 -04:00
committed by GitHub
parent 262d6f0681
commit 006460ad57
2 changed files with 60 additions and 1 deletions
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test/shell.d/clipboard-test.sh
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@@ -292,6 +292,47 @@ capture_output=$(printf 'closing app copy' | WL_PASTE_TEXT="stale read" XDG_RUNT
[[ $capture_output == '{"type":"text","text":"closing app copy"}' ]] || fail "clipboard capture records watched text from stdin"
pass "clipboard capture records watched text from stdin"
capture_output=$(printf '%s' 'UTF-16 clipboard - fixed' | iconv -f UTF-8 -t UTF-16LE | XDG_RUNTIME_DIR="$TMPDIR" XDG_STATE_HOME="$TMPDIR/state" PATH="$TMPDIR/bin:$PATH" "$ROOT/shell/plugins/clipboard/capture.sh" text)
[[ $capture_output == '{"type":"text","text":"UTF-16 clipboard - fixed"}' ]] || fail "clipboard capture decodes UTF-16LE text"
pass "clipboard capture decodes UTF-16LE text"
# BOM-less UTF-16LE "A" is byte-identical to UTF-8 "A\0". The strict
# whole-payload pattern intentionally resolves that ambiguity as UTF-16.
capture_output=$(printf 'A' | iconv -f UTF-8 -t UTF-16LE | XDG_RUNTIME_DIR="$TMPDIR" XDG_STATE_HOME="$TMPDIR/state" PATH="$TMPDIR/bin:$PATH" "$ROOT/shell/plugins/clipboard/capture.sh" text)
[[ $capture_output == '{"type":"text","text":"A"}' ]] || fail "clipboard capture decodes exact NUL-padded UTF-16LE text"
pass "clipboard capture decodes exact NUL-padded UTF-16LE text"
capture_output=$(printf 'BE text' | iconv -f UTF-8 -t UTF-16BE | XDG_RUNTIME_DIR="$TMPDIR" XDG_STATE_HOME="$TMPDIR/state" PATH="$TMPDIR/bin:$PATH" "$ROOT/shell/plugins/clipboard/capture.sh" text)
[[ $capture_output == '{"type":"text","text":"BE text"}' ]] || fail "clipboard capture decodes exact NUL-padded UTF-16BE text"
pass "clipboard capture decodes exact NUL-padded UTF-16BE text"
capture_output=$({ printf '\377\376'; printf '%s' 'Little endian 日本 😀' | iconv -f UTF-8 -t UTF-16LE; } | XDG_RUNTIME_DIR="$TMPDIR" XDG_STATE_HOME="$TMPDIR/state" PATH="$TMPDIR/bin:$PATH" "$ROOT/shell/plugins/clipboard/capture.sh" text)
[[ $capture_output == '{"type":"text","text":"Little endian 日本 😀"}' ]] || fail "clipboard capture decodes BOM-tagged UTF-16LE text"
pass "clipboard capture decodes BOM-tagged UTF-16LE text"
capture_output=$({ printf '\376\377'; printf '%s' 'Big endian 日本 😀' | iconv -f UTF-8 -t UTF-16BE; } | XDG_RUNTIME_DIR="$TMPDIR" XDG_STATE_HOME="$TMPDIR/state" PATH="$TMPDIR/bin:$PATH" "$ROOT/shell/plugins/clipboard/capture.sh" text)
[[ $capture_output == '{"type":"text","text":"Big endian 日本 😀"}' ]] || fail "clipboard capture decodes BOM-tagged UTF-16BE text"
pass "clipboard capture decodes BOM-tagged UTF-16BE text"
assert_ambiguous_utf16_falls_back() {
local description="$1" value="$2" expected capture_output
printf '%s' "$value" | iconv -f UTF-8 -t UTF-16LE >"$TMPDIR/ambiguous-utf16"
expected=$(jq -cRs '{type:"text", text:.}' <"$TMPDIR/ambiguous-utf16")
capture_output=$(XDG_RUNTIME_DIR="$TMPDIR" XDG_STATE_HOME="$TMPDIR/state" PATH="$TMPDIR/bin:$PATH" "$ROOT/shell/plugins/clipboard/capture.sh" text <"$TMPDIR/ambiguous-utf16")
[[ $capture_output == "$expected" ]] || fail "$description" "expected: $expected\nactual: $capture_output"
pass "$description"
}
assert_ambiguous_utf16_falls_back "clipboard capture leaves BOM-less UTF-16 punctuation undecoded" '—'
assert_ambiguous_utf16_falls_back "clipboard capture leaves BOM-less UTF-16 CJK undecoded" '日本'
assert_ambiguous_utf16_falls_back "clipboard capture leaves BOM-less UTF-16 surrogate pairs undecoded" '😀'
printf '\377\376\075\330' >"$TMPDIR/malformed-utf16"
expected=$(jq -cRs '{type:"text", text:.}' <"$TMPDIR/malformed-utf16")
capture_output=$(XDG_RUNTIME_DIR="$TMPDIR" XDG_STATE_HOME="$TMPDIR/state" PATH="$TMPDIR/bin:$PATH" "$ROOT/shell/plugins/clipboard/capture.sh" text <"$TMPDIR/malformed-utf16")
[[ $capture_output == "$expected" ]] || fail "clipboard capture falls back from malformed UTF-16" "expected: $expected\nactual: $capture_output"
pass "clipboard capture falls back from malformed UTF-16"
capture_output=$(printf 'png-data' | XDG_RUNTIME_DIR="$TMPDIR" XDG_STATE_HOME="$TMPDIR/state" PATH="$TMPDIR/bin:$PATH" "$ROOT/shell/plugins/clipboard/capture.sh" image/png)
image_path=$(jq -r '.path' <<<"$capture_output")
jq -e '.type == "image" and .mime == "image/png" and (.capturedAt | type == "string")' <<<"$capture_output" >/dev/null || fail "clipboard capture records watched png images"