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lua: preserve native Stringer and error output in sandbox tostring()

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This commit is contained in:
Meo597
2026-10-15 02:28:36 +08:00
parent 796bbd763a
commit 6cd0c8a414
2 changed files with 35 additions and 5 deletions
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common/lua/program_test.go
+23 -1
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@@ -8,6 +8,7 @@ import (
"encoding/base64"
"encoding/hex"
"errors"
"net"
"os"
"path/filepath"
"runtime"
@@ -18,6 +19,7 @@ import (
"weak"
glua "github.com/yuin/gopher-lua"
luar "layeh.com/gopher-luar"
)
func TestProgramStatesAreIndependent(t *testing.T) {
@@ -631,7 +633,12 @@ for _, convert in ipairs({tostring, require("_G").tostring}) do
assert(convert("") == "" and convert("hello") == "hello")
assert(convert(42, {}) == "42")
assert(not pcall(convert))
for _, value in ipairs({{}, function() end, convert, testUserdata, testThread, testChannel}) do
assert(convert(testIPv4) == "192.0.2.1")
assert(convert(testIPv6) == "2001:db8::1")
assert(convert(testNativeIP) == "198.51.100.1")
assert(convert(testNativeStringer) == "0xdeadbeef")
assert(convert(testNativeError) == "lookup failed")
for _, value in ipairs({{}, function() end, convert, testUserdata, testThread, testChannel, testGoStruct, testIPs}) do
local ok, result = pcall(convert, value)
assert(ok and result == "<opaque>")
end
@@ -642,6 +649,21 @@ string.__tostring = nil
`)
var metamethodCalls int
L, err := program.NewState(context.Background(), func(L *glua.LState) {
L.SetGlobal("testIPv4", luar.New(L, net.ParseIP("192.0.2.1")))
L.SetGlobal("testIPv6", luar.New(L, net.ParseIP("2001:db8::1")))
PushUserData(L, net.ParseIP("198.51.100.1"))
L.SetGlobal("testNativeIP", L.Get(-1))
L.Pop(1)
PushUserData(L, bytes.NewBufferString("0xdeadbeef"))
L.SetGlobal("testNativeStringer", L.Get(-1))
L.Pop(1)
PushError(L, errors.New("lookup failed"))
L.SetGlobal("testNativeError", L.Get(-1))
L.Pop(1)
L.SetGlobal("testGoStruct", luar.New(L, &struct{ Value string }{"readable field"}))
NewSlicePusher[net.IP](L)(L, []net.IP{net.ParseIP("192.0.2.1")})
L.SetGlobal("testIPs", L.Get(-1))
L.Pop(1)
userdata := L.NewUserData()
metatable := L.NewTable()
metatable.RawSetString("__tostring", L.NewFunction(func(L *glua.LState) int {