// Copyright 2009 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 pe
import (
"debug/dwarf"
"io/ioutil"
"os"
"os/exec"
"path/filepath"
"reflect"
"runtime"
"testing"
)
type fileTest struct {
file string
hdr FileHeader
opthdr interface{}
sections []*SectionHeader
symbols []*Symbol
hasNoDwarfInfo bool
}
var fileTests = []fileTest{
{
file: "testdata/gcc-386-mingw-obj",
hdr: FileHeader{0x014c, 0x000c, 0x0, 0x64a, 0x1e, 0x0, 0x104},
sections: []*SectionHeader{
{".text", 0, 0, 36, 500, 1440, 0, 3, 0, 0x60300020},
{".data", 0, 0, 0, 0, 0, 0, 0, 0, 3224371264},
{".bss", 0, 0, 0, 0, 0, 0, 0, 0, 3224371328},
{".debug_abbrev", 0, 0, 137, 536, 0, 0, 0, 0, 0x42100000},
{".debug_info", 0, 0, 418, 673, 1470, 0, 7, 0, 1108344832},
{".debug_line", 0, 0, 128, 1091, 1540, 0, 1, 0, 1108344832},
{".rdata", 0, 0, 16, 1219, 0, 0, 0, 0, 1076887616},
{".debug_frame", 0, 0, 52, 1235, 1550, 0, 2, 0, 1110441984},
{".debug_loc", 0, 0, 56, 1287, 0, 0, 0, 0, 1108344832},
{".debug_pubnames", 0, 0, 27, 1343, 1570, 0, 1, 0, 1108344832},
{".debug_pubtypes", 0, 0, 38, 1370, 1580, 0, 1, 0, 1108344832},
{".debug_aranges", 0, 0, 32, 1408, 1590, 0, 2, 0, 1108344832},
},
symbols: []*Symbol{
{".file", 0x0, -2, 0x0, 0x67},
{"_main", 0x0, 1, 0x20, 0x2},
{".text", 0x0, 1, 0x0, 0x3},
{".data", 0x0, 2, 0x0, 0x3},
{".bss", 0x0, 3, 0x0, 0x3},
{".debug_abbrev", 0x0, 4, 0x0, 0x3},
{".debug_info", 0x0, 5, 0x0, 0x3},
{".debug_line", 0x0, 6, 0x0, 0x3},
{".rdata", 0x0, 7, 0x0, 0x3},
{".debug_frame", 0x0, 8, 0x0, 0x3},
{".debug_loc", 0x0, 9, 0x0, 0x3},
{".debug_pubnames", 0x0, 10, 0x0, 0x3},
{".debug_pubtypes", 0x0, 11, 0x0, 0x3},
{".debug_aranges", 0x0, 12, 0x0, 0x3},
{"___main", 0x0, 0, 0x20, 0x2},
{"_puts", 0x0, 0, 0x20, 0x2},
},
},
{
file: "testdata/gcc-386-mingw-exec",
hdr: FileHeader{0x014c, 0x000f, 0x4c6a1b60, 0x3c00, 0x282, 0xe0, 0x107},
opthdr: &OptionalHeader32{
0x10b, 0x2, 0x38, 0xe00, 0x1a00, 0x200, 0x1160, 0x1000, 0x2000, 0x400000, 0x1000, 0x200, 0x4, 0x0, 0x1, 0x0, 0x4, 0x0, 0x0, 0x10000, 0x400, 0x14abb, 0x3, 0x0, 0x200000, 0x1000, 0x100000, 0x1000, 0x0, 0x10,
[16]DataDirectory{
{0x0, 0x0},
{0x5000, 0x3c8},
{0x0, 0x0},
{0x0, 0x0},
{0x0, 0x0},
{0x0, 0x0},
{0x0, 0x0},
{0x0, 0x0},
{0x0, 0x0},
{0x7000, 0x18},
{0x0, 0x0},
{0x0, 0x0},
{0x0, 0x0},
{0x0, 0x0},
{0x0, 0x0},
{0x0, 0x0},
},
},
sections: []*SectionHeader{
{".text", 0xcd8, 0x1000, 0xe00, 0x400, 0x0, 0x0, 0x0, 0x0, 0x60500060},
{".data", 0x10, 0x2000, 0x200, 0x1200, 0x0, 0x0, 0x0, 0x0, 0xc0300040},
{".rdata", 0x120, 0x3000, 0x200, 0x1400, 0x0, 0x0, 0x0, 0x0, 0x40300040},
{".bss", 0xdc, 0x4000, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0xc0400080},
{".idata", 0x3c8, 0x5000, 0x400, 0x1600, 0x0, 0x0, 0x0, 0x0, 0xc0300040},
{".CRT", 0x18, 0x6000, 0x200, 0x1a00, 0x0, 0x0, 0x0, 0x0, 0xc0300040},
{".tls", 0x20, 0x7000, 0x200, 0x1c00, 0x0, 0x0, 0x0, 0x0, 0xc0300040},
{".debug_aranges", 0x20, 0x8000, 0x200, 0x1e00, 0x0, 0x0, 0x0, 0x0, 0x42100000},
{".debug_pubnames", 0x51, 0x9000, 0x200, 0x2000, 0x0, 0x0, 0x0, 0x0, 0x42100000},
{".debug_pubtypes", 0x91, 0xa000, 0x200, 0x2200, 0x0, 0x0, 0x0, 0x0, 0x42100000},
{".debug_info", 0xe22, 0xb000, 0x1000, 0x2400, 0x0, 0x0, 0x0, 0x0, 0x42100000},
{".debug_abbrev", 0x157, 0xc000, 0x200, 0x3400, 0x0, 0x0, 0x0, 0x0, 0x42100000},
{".debug_line", 0x144, 0xd000, 0x200, 0x3600, 0x0, 0x0, 0x0, 0x0, 0x42100000},
{".debug_frame", 0x34, 0xe000, 0x200, 0x3800, 0x0, 0x0, 0x0, 0x0, 0x42300000},
{".debug_loc", 0x38, 0xf000, 0x200, 0x3a00, 0x0, 0x0, 0x0, 0x0, 0x42100000},
},
},
{
file: "testdata/gcc-amd64-mingw-obj",
hdr: FileHeader{0x8664, 0x6, 0x0, 0x198, 0x12, 0x0, 0x4},
sections: []*SectionHeader{
{".text", 0x0, 0x0, 0x30, 0x104, 0x15c, 0x0, 0x3, 0x0, 0x60500020},
{".data", 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0xc0500040},
{".bss", 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0xc0500080},
{".rdata", 0x0, 0x0, 0x10, 0x134, 0x0, 0x0, 0x0, 0x0, 0x40500040},
{".xdata", 0x0, 0x0, 0xc, 0x144, 0x0, 0x0, 0x0, 0x0, 0x40300040},
{".pdata", 0x0, 0x0, 0xc, 0x150, 0x17a, 0x0, 0x3, 0x0, 0x40300040},
},
symbols: []*Symbol{
{".file", 0x0, -2, 0x0, 0x67},
{"main", 0x0, 1, 0x20, 0x2},
{".text", 0x0, 1, 0x0, 0x3},
{".data", 0x0, 2, 0x0, 0x3},
{".bss", 0x0, 3, 0x0, 0x3},
{".rdata", 0x0, 4, 0x0, 0x3},
{".xdata", 0x0, 5, 0x0, 0x3},
{".pdata", 0x0, 6, 0x0, 0x3},
{"__main", 0x0, 0, 0x20, 0x2},
{"puts", 0x0, 0, 0x20, 0x2},
},
hasNoDwarfInfo: true,
},
{
file: "testdata/gcc-amd64-mingw-exec",
hdr: FileHeader{0x8664, 0x11, 0x53e4364f, 0x39600, 0x6fc, 0xf0, 0x27},
opthdr: &OptionalHeader64{
0x20b, 0x2, 0x16, 0x6a00, 0x2400, 0x1600, 0x14e0, 0x1000, 0x400000, 0x1000, 0x200, 0x4, 0x0, 0x0, 0x0, 0x5, 0x2, 0x0, 0x45000, 0x600, 0x46f19, 0x3, 0x0, 0x200000, 0x1000, 0x100000, 0x1000, 0x0, 0x10,
[16]DataDirectory{
{0x0, 0x0},
{0xe000, 0x990},
{0x0, 0x0},
{0xa000, 0x498},
{0x0, 0x0},
{0x0, 0x0},
{0x0, 0x0},
{0x0, 0x0},
{0x0, 0x0},
{0x10000, 0x28},
{0x0, 0x0},
{0x0, 0x0},
{0xe254, 0x218},
{0x0, 0x0},
{0x0, 0x0},
{0x0, 0x0},
}},
sections: []*SectionHeader{
{".text", 0x6860, 0x1000, 0x6a00, 0x600, 0x0, 0x0, 0x0, 0x0, 0x60500020},
{".data", 0xe0, 0x8000, 0x200, 0x7000, 0x0, 0x0, 0x0, 0x0, 0xc0500040},
{".rdata", 0x6b0, 0x9000, 0x800, 0x7200, 0x0, 0x0, 0x0, 0x0, 0x40600040},
{".pdata", 0x498, 0xa000, 0x600, 0x7a00, 0x0, 0x0, 0x0, 0x0, 0x40300040},
{".xdata", 0x488, 0xb000, 0x600, 0x8000, 0x0, 0x0, 0x0, 0x0, 0x40300040},
{".bss", 0x1410, 0xc000, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0xc0600080},
{".idata", 0x990, 0xe000, 0xa00, 0x8600, 0x0, 0x0, 0x0, 0x0, 0xc0300040},
{".CRT", 0x68, 0xf000, 0x200, 0x9000, 0x0, 0x0, 0x0, 0x0, 0xc0400040},
{".tls", 0x48, 0x10000, 0x200, 0x9200, 0x0, 0x0, 0x0, 0x0, 0xc0600040},
{".debug_aranges", 0x600, 0x11000, 0x600, 0x9400, 0x0, 0x0, 0x0, 0x0, 0x42500040},
{".debug_info", 0x1316e, 0x12000, 0x13200, 0x9a00, 0x0, 0x0, 0x0, 0x0, 0x42100040},
{".debug_abbrev", 0x2ccb, 0x26000, 0x2e00, 0x1cc00, 0x0, 0x0, 0x0, 0x0, 0x42100040},
{".debug_line", 0x3c4d, 0x29000, 0x3e00, 0x1fa00, 0x0, 0x0, 0x0, 0x0, 0x42100040},
{".debug_frame", 0x18b8, 0x2d000, 0x1a00, 0x23800, 0x0, 0x0, 0x0, 0x0, 0x42400040},
{".debug_str", 0x396, 0x2f000, 0x400, 0x25200, 0x0, 0x0, 0x0, 0x0, 0x42100040},
{".debug_loc", 0x13240, 0x30000, 0x13400, 0x25600, 0x0, 0x0, 0x0, 0x0, 0x42100040},
{".debug_ranges", 0xa70, 0x44000, 0xc00, 0x38a00, 0x0, 0x0, 0x0, 0x0, 0x42100040},
},
},
}
func isOptHdrEq(a, b interface{}) bool {
switch va := a.(type) {
case *OptionalHeader32:
vb, ok := b.(*OptionalHeader32)
if !ok {
return false
}
return *vb == *va
case *OptionalHeader64:
vb, ok := b.(*OptionalHeader64)
if !ok {
return false
}
return *vb == *va
case nil:
return b == nil
}
return false
}
func TestOpen(t *testing.T) {
for i := range fileTests {
tt := &fileTests[i]
f, err := Open(tt.file)
if err != nil {
t.Error(err)
continue
}
if !reflect.DeepEqual(f.FileHeader, tt.hdr) {
t.Errorf("open %s:\n\thave %#v\n\twant %#v\n", tt.file, f.FileHeader, tt.hdr)
continue
}
if !isOptHdrEq(tt.opthdr, f.OptionalHeader) {
t.Errorf("open %s:\n\thave %#v\n\twant %#v\n", tt.file, f.OptionalHeader, tt.opthdr)
continue
}
for i, sh := range f.Sections {
if i >= len(tt.sections) {
break
}
have := &sh.SectionHeader
want := tt.sections[i]
if !reflect.DeepEqual(have, want) {
t.Errorf("open %s, section %d:\n\thave %#v\n\twant %#v\n", tt.file, i, have, want)
}
}
tn := len(tt.sections)
fn := len(f.Sections)
if tn != fn {
t.Errorf("open %s: len(Sections) = %d, want %d", tt.file, fn, tn)
}
for i, have := range f.Symbols {
if i >= len(tt.symbols) {
break
}
want := tt.symbols[i]
if !reflect.DeepEqual(have, want) {
t.Errorf("open %s, symbol %d:\n\thave %#v\n\twant %#v\n", tt.file, i, have, want)
}
}
if !tt.hasNoDwarfInfo {
_, err = f.DWARF()
if err != nil {
t.Errorf("fetching %s dwarf details failed: %v", tt.file, err)
}
}
}
}
func TestOpenFailure(t *testing.T) {
filename := "file.go" // not a PE file
_, err := Open(filename) // don't crash
if err == nil {
t.Errorf("open %s: succeeded unexpectedly", filename)
}
}
func TestDWARF(t *testing.T) {
if runtime.GOOS != "windows" {
t.Skip("skipping windows only test")
}
tmpdir, err := ioutil.TempDir("", "TestDWARF")
if err != nil {
t.Fatal("TempDir failed: ", err)
}
defer os.RemoveAll(tmpdir)
prog := `
package main
func main() {
}
`
src := filepath.Join(tmpdir, "a.go")
exe := filepath.Join(tmpdir, "a.exe")
err = ioutil.WriteFile(src, []byte(prog), 0644)
output, err := exec.Command("go", "build", "-o", exe, src).CombinedOutput()
if err != nil {
t.Fatalf("building test executable failed: %s %s", err, output)
}
f, err := Open(exe)
if err != nil {
t.Fatal(err)
}
defer f.Close()
d, err := f.DWARF()
if err != nil {
t.Fatal(err)
}
// look for main.main
r := d.Reader()
for {
e, err := r.Next()
if err != nil {
t.Fatal("r.Next:", err)
}
if e == nil {
break
}
if e.Tag == dwarf.TagSubprogram {
for _, f := range e.Field {
if f.Attr == dwarf.AttrName && e.Val(dwarf.AttrName) == "main.main" {
return
}
}
}
}
t.Fatal("main.main not found")
}