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142 lines
6.0 KiB
142 lines
6.0 KiB
// Copyright 2018 Google Inc. All rights reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package symbol_inject
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import (
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"debug/pe"
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"strconv"
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"testing"
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)
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func TestPESymbolTable(t *testing.T) {
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testCases := []struct {
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file *pe.File
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symbol string
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offset, size uint64
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}{
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{
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file: peSymbolTable1,
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symbol: "soong_build_number",
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offset: 0x2420,
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size: 128,
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},
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{
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file: peSymbolTable2,
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symbol: "symbol1",
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offset: 0x2420,
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size: 128,
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},
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{
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file: peSymbolTable2,
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symbol: "symbol2",
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offset: 0x24a0,
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size: 128,
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},
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{
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// Test when symbol has the same value as the target symbol but is located afterwards in the list
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file: &pe.File{
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FileHeader: pe.FileHeader{
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Machine: pe.IMAGE_FILE_MACHINE_I386,
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},
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Sections: []*pe.Section{
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&pe.Section{SectionHeader: pe.SectionHeader{Name: ".text", VirtualSize: 0x15e83c, VirtualAddress: 0x1000, Size: 0x15ea00, Offset: 0x600, PointerToRelocations: 0x0, PointerToLineNumbers: 0x0, NumberOfRelocations: 0x0, NumberOfLineNumbers: 0x0, Characteristics: 0x60500060}},
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&pe.Section{SectionHeader: pe.SectionHeader{Name: ".data", VirtualSize: 0x6a58, VirtualAddress: 0x160000, Size: 0x6c00, Offset: 0x15f000, PointerToRelocations: 0x0, PointerToLineNumbers: 0x0, NumberOfRelocations: 0x0, NumberOfLineNumbers: 0x0, Characteristics: 0xc0600040}},
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},
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Symbols: []*pe.Symbol{
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&pe.Symbol{Name: "_soong_build_number", Value: 0x20, SectionNumber: 2, Type: 0x0, StorageClass: 0x2},
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&pe.Symbol{Name: ".data", Value: 0x20, SectionNumber: 2, Type: 0x0, StorageClass: 0x3},
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&pe.Symbol{Name: "_adb_device_banner", Value: 0xa0, SectionNumber: 2, Type: 0x0, StorageClass: 0x2},
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},
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},
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symbol: "soong_build_number",
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offset: 0x15f020,
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size: 128,
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},
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{
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// Test when symbol has nothing after it
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file: &pe.File{
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FileHeader: pe.FileHeader{
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Machine: pe.IMAGE_FILE_MACHINE_AMD64,
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},
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Sections: []*pe.Section{
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&pe.Section{SectionHeader: pe.SectionHeader{Name: ".text", VirtualSize: 0x1cc0, VirtualAddress: 0x1000, Size: 0x1e00, Offset: 0x600, PointerToRelocations: 0x0, PointerToLineNumbers: 0x0, NumberOfRelocations: 0x0, NumberOfLineNumbers: 0x0, Characteristics: 0x60500020}},
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&pe.Section{SectionHeader: pe.SectionHeader{Name: ".data", VirtualSize: 0xa0, VirtualAddress: 0x3000, Size: 0x200, Offset: 0x2400, PointerToRelocations: 0x0, PointerToLineNumbers: 0x0, NumberOfRelocations: 0x0, NumberOfLineNumbers: 0x0, Characteristics: 0xc0600040}},
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},
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Symbols: []*pe.Symbol{
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&pe.Symbol{Name: "soong_build_number", Value: 0x20, SectionNumber: 2, Type: 0x0, StorageClass: 0x2},
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},
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},
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symbol: "soong_build_number",
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offset: 0x2420,
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size: 128,
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},
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{
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// Test when symbol has a symbol in a different section after it
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file: &pe.File{
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FileHeader: pe.FileHeader{
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Machine: pe.IMAGE_FILE_MACHINE_AMD64,
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},
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Sections: []*pe.Section{
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&pe.Section{SectionHeader: pe.SectionHeader{Name: ".text", VirtualSize: 0x1cc0, VirtualAddress: 0x1000, Size: 0x1e00, Offset: 0x600, PointerToRelocations: 0x0, PointerToLineNumbers: 0x0, NumberOfRelocations: 0x0, NumberOfLineNumbers: 0x0, Characteristics: 0x60500020}},
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&pe.Section{SectionHeader: pe.SectionHeader{Name: ".data", VirtualSize: 0xa0, VirtualAddress: 0x3000, Size: 0x200, Offset: 0x2400, PointerToRelocations: 0x0, PointerToLineNumbers: 0x0, NumberOfRelocations: 0x0, NumberOfLineNumbers: 0x0, Characteristics: 0xc0600040}},
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&pe.Section{SectionHeader: pe.SectionHeader{Name: ".rdata", VirtualSize: 0x5e0, VirtualAddress: 0x4000, Size: 0x600, Offset: 0x2600, PointerToRelocations: 0x0, PointerToLineNumbers: 0x0, NumberOfRelocations: 0x0, NumberOfLineNumbers: 0x0, Characteristics: 0x40500040}},
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},
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Symbols: []*pe.Symbol{
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&pe.Symbol{Name: "soong_build_number", Value: 0x20, SectionNumber: 2, Type: 0x0, StorageClass: 0x2},
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&pe.Symbol{Name: "_adb_device_banner", Value: 0x30, SectionNumber: 3, Type: 0x0, StorageClass: 0x2},
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},
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},
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symbol: "soong_build_number",
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offset: 0x2420,
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size: 128,
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},
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{
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// Test when symbols are out of order
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file: &pe.File{
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FileHeader: pe.FileHeader{
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Machine: pe.IMAGE_FILE_MACHINE_AMD64,
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},
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Sections: []*pe.Section{
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&pe.Section{SectionHeader: pe.SectionHeader{Name: ".text", VirtualSize: 0x1cc0, VirtualAddress: 0x1000, Size: 0x1e00, Offset: 0x600, PointerToRelocations: 0x0, PointerToLineNumbers: 0x0, NumberOfRelocations: 0x0, NumberOfLineNumbers: 0x0, Characteristics: 0x60500020}},
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&pe.Section{SectionHeader: pe.SectionHeader{Name: ".data", VirtualSize: 0x120, VirtualAddress: 0x3000, Size: 0x200, Offset: 0x2400, PointerToRelocations: 0x0, PointerToLineNumbers: 0x0, NumberOfRelocations: 0x0, NumberOfLineNumbers: 0x0, Characteristics: 0xc0600040}},
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},
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Symbols: []*pe.Symbol{
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&pe.Symbol{Name: "_adb_device_banner", Value: 0xa0, SectionNumber: 2, Type: 0x0, StorageClass: 0x2},
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&pe.Symbol{Name: "soong_build_number", Value: 0x20, SectionNumber: 2, Type: 0x0, StorageClass: 0x2},
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},
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},
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symbol: "soong_build_number",
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offset: 0x2420,
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size: 128,
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},
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}
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for i, testCase := range testCases {
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t.Run(strconv.Itoa(i), func(t *testing.T) {
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file, err := extractPESymbols(testCase.file)
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if err != nil {
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t.Error(err.Error())
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}
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offset, size, err := findSymbol(file, testCase.symbol)
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if err != nil {
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t.Error(err.Error())
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}
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if offset != testCase.offset || size != testCase.size {
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t.Errorf("expected %x:%x, got %x:%x", testCase.offset, testCase.size, offset, size)
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}
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})
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}
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}
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