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