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// Copyright 2017 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package archive
import (
"bytes"
"debug/elf"
"debug/macho"
"debug/pe"
"fmt"
"internal/testenv"
"internal/xcoff"
"io"
"os"
"path/filepath"
"runtime"
"sync"
"testing"
"unicode/utf8"
)
var buildDir string
func TestMain(m *testing.M) {
if !testenv.HasGoBuild() {
return
}
exit := m.Run()
if buildDir != "" {
os.RemoveAll(buildDir)
}
os.Exit(exit)
}
func copyDir(dst, src string) error {
err := os.MkdirAll(dst, 0777)
if err != nil {
return err
}
entries, err := os.ReadDir(src)
if err != nil {
return err
}
for _, entry := range entries {
err = copyFile(filepath.Join(dst, entry.Name()), filepath.Join(src, entry.Name()))
if err != nil {
return err
}
}
return nil
}
func copyFile(dst, src string) (err error) {
var s, d *os.File
s, err = os.Open(src)
if err != nil {
return err
}
defer s.Close()
d, err = os.Create(dst)
if err != nil {
return err
}
defer func() {
e := d.Close()
if err == nil {
err = e
}
}()
_, err = io.Copy(d, s)
if err != nil {
return err
}
return nil
}
var (
buildOnce sync.Once
builtGoobjs goobjPaths
buildErr error
)
type goobjPaths struct {
go1obj string
go2obj string
goarchive string
cgoarchive string
}
func buildGoobj(t *testing.T) goobjPaths {
buildOnce.Do(func() {
buildErr = func() (err error) {
buildDir, err = os.MkdirTemp("", "TestGoobj")
if err != nil {
return err
}
go1obj := filepath.Join(buildDir, "go1.o")
go2obj := filepath.Join(buildDir, "go2.o")
goarchive := filepath.Join(buildDir, "go.a")
cgoarchive := ""
gotool, err := testenv.GoTool()
if err != nil {
return err
}
go1src := filepath.Join("testdata", "go1.go")
go2src := filepath.Join("testdata", "go2.go")
importcfgfile := filepath.Join(buildDir, "importcfg")
testenv.WriteImportcfg(t, importcfgfile, nil, go1src, go2src)
out, err := testenv.Command(t, gotool, "tool", "compile", "-importcfg="+importcfgfile, "-p=p", "-o", go1obj, go1src).CombinedOutput()
if err != nil {
return fmt.Errorf("go tool compile -o %s %s: %v\n%s", go1obj, go1src, err, out)
}
out, err = testenv.Command(t, gotool, "tool", "compile", "-importcfg="+importcfgfile, "-p=p", "-o", go2obj, go2src).CombinedOutput()
if err != nil {
return fmt.Errorf("go tool compile -o %s %s: %v\n%s", go2obj, go2src, err, out)
}
out, err = testenv.Command(t, gotool, "tool", "pack", "c", goarchive, go1obj, go2obj).CombinedOutput()
if err != nil {
return fmt.Errorf("go tool pack c %s %s %s: %v\n%s", goarchive, go1obj, go2obj, err, out)
}
if testenv.HasCGO() {
cgoarchive = filepath.Join(buildDir, "mycgo.a")
gopath := filepath.Join(buildDir, "gopath")
err = copyDir(filepath.Join(gopath, "src", "mycgo"), filepath.Join("testdata", "mycgo"))
if err == nil {
err = os.WriteFile(filepath.Join(gopath, "src", "mycgo", "go.mod"), []byte("module mycgo\n"), 0666)
}
if err != nil {
return err
}
cmd := testenv.Command(t, gotool, "build", "-buildmode=archive", "-o", cgoarchive, "-gcflags=all="+os.Getenv("GO_GCFLAGS"), "mycgo")
cmd.Dir = filepath.Join(gopath, "src", "mycgo")
cmd.Env = append(os.Environ(), "GOPATH="+gopath)
out, err = cmd.CombinedOutput()
if err != nil {
return fmt.Errorf("go install mycgo: %v\n%s", err, out)
}
}
builtGoobjs = goobjPaths{
go1obj: go1obj,
go2obj: go2obj,
goarchive: goarchive,
cgoarchive: cgoarchive,
}
return nil
}()
})
if buildErr != nil {
t.Helper()
t.Fatal(buildErr)
}
return builtGoobjs
}
func TestParseGoobj(t *testing.T) {
path := buildGoobj(t).go1obj
f, err := os.Open(path)
if err != nil {
t.Fatal(err)
}
defer f.Close()
a, err := Parse(f, false)
if err != nil {
t.Fatal(err)
}
if len(a.Entries) != 2 {
t.Errorf("expect 2 entry, found %d", len(a.Entries))
}
for _, e := range a.Entries {
if e.Type == EntryPkgDef {
continue
}
if e.Type != EntryGoObj {
t.Errorf("wrong type of object: want EntryGoObj, got %v", e.Type)
}
if !bytes.Contains(e.Obj.TextHeader, []byte(runtime.GOARCH)) {
t.Errorf("text header does not contain GOARCH %s: %q", runtime.GOARCH, e.Obj.TextHeader)
}
}
}
func TestParseArchive(t *testing.T) {
path := buildGoobj(t).goarchive
f, err := os.Open(path)
if err != nil {
t.Fatal(err)
}
defer f.Close()
a, err := Parse(f, false)
if err != nil {
t.Fatal(err)
}
if len(a.Entries) != 3 {
t.Errorf("expect 3 entry, found %d", len(a.Entries))
}
var found1 bool
var found2 bool
for _, e := range a.Entries {
if e.Type == EntryPkgDef {
continue
}
if e.Type != EntryGoObj {
t.Errorf("wrong type of object: want EntryGoObj, got %v", e.Type)
}
if !bytes.Contains(e.Obj.TextHeader, []byte(runtime.GOARCH)) {
t.Errorf("text header does not contain GOARCH %s: %q", runtime.GOARCH, e.Obj.TextHeader)
}
if e.Name == "go1.o" {
found1 = true
}
if e.Name == "go2.o" {
found2 = true
}
}
if !found1 {
t.Errorf(`object "go1.o" not found`)
}
if !found2 {
t.Errorf(`object "go2.o" not found`)
}
}
func TestParseCGOArchive(t *testing.T) {
testenv.MustHaveCGO(t)
path := buildGoobj(t).cgoarchive
f, err := os.Open(path)
if err != nil {
t.Fatal(err)
}
defer f.Close()
a, err := Parse(f, false)
if err != nil {
t.Fatal(err)
}
c1 := "c1"
c2 := "c2"
switch runtime.GOOS {
case "darwin", "ios":
c1 = "_" + c1
c2 = "_" + c2
case "windows":
if runtime.GOARCH == "386" {
c1 = "_" + c1
c2 = "_" + c2
}
case "aix":
c1 = "." + c1
c2 = "." + c2
}
var foundgo, found1, found2 bool
for _, e := range a.Entries {
switch e.Type {
default:
t.Errorf("unknown object type")
case EntryPkgDef:
continue
case EntryGoObj:
foundgo = true
if !bytes.Contains(e.Obj.TextHeader, []byte(runtime.GOARCH)) {
t.Errorf("text header does not contain GOARCH %s: %q", runtime.GOARCH, e.Obj.TextHeader)
}
continue
case EntryNativeObj:
}
obj := io.NewSectionReader(f, e.Offset, e.Size)
switch runtime.GOOS {
case "darwin", "ios":
mf, err := macho.NewFile(obj)
if err != nil {
t.Fatal(err)
}
if mf.Symtab == nil {
continue
}
for _, s := range mf.Symtab.Syms {
switch s.Name {
case c1:
found1 = true
case c2:
found2 = true
}
}
case "windows":
pf, err := pe.NewFile(obj)
if err != nil {
t.Fatal(err)
}
for _, s := range pf.Symbols {
switch s.Name {
case c1:
found1 = true
case c2:
found2 = true
}
}
case "aix":
xf, err := xcoff.NewFile(obj)
if err != nil {
t.Fatal(err)
}
for _, s := range xf.Symbols {
switch s.Name {
case c1:
found1 = true
case c2:
found2 = true
}
}
default: // ELF
ef, err := elf.NewFile(obj)
if err != nil {
t.Fatal(err)
}
syms, err := ef.Symbols()
if err != nil {
t.Fatal(err)
}
for _, s := range syms {
switch s.Name {
case c1:
found1 = true
case c2:
found2 = true
}
}
}
}
if !foundgo {
t.Errorf(`go object not found`)
}
if !found1 {
t.Errorf(`symbol %q not found`, c1)
}
if !found2 {
t.Errorf(`symbol %q not found`, c2)
}
}
func TestExactly16Bytes(t *testing.T) {
var tests = []string{
"",
"a",
"日本語",
"1234567890123456",
"12345678901234567890",
"1234567890123本語4567890",
"12345678901234日本語567890",
"123456789012345日本語67890",
"1234567890123456日本語7890",
"1234567890123456日本語7日本語890",
}
for _, str := range tests {
got := exactly16Bytes(str)
if len(got) != 16 {
t.Errorf("exactly16Bytes(%q) is %q, length %d", str, got, len(got))
}
// Make sure it is full runes.
for _, c := range got {
if c == utf8.RuneError {
t.Errorf("exactly16Bytes(%q) is %q, has partial rune", str, got)
}
}
}
}