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      1 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 #include "courgette/base_test_unittest.h"
      6 #include "courgette/courgette.h"
      7 #include "courgette/streams.h"
      8 
      9 class EncodeDecodeTest : public BaseTest {
     10  public:
     11   void TestAssembleToStreamDisassemble(std::string file,
     12                                        size_t expected_encoded_lenth) const;
     13 };
     14 
     15 void EncodeDecodeTest::TestAssembleToStreamDisassemble(
     16     std::string file,
     17     size_t expected_encoded_lenth) const {
     18   const void* original_buffer = file.c_str();
     19   size_t original_length = file.length();
     20 
     21   courgette::AssemblyProgram* program = NULL;
     22   const courgette::Status parse_status =
     23       courgette::ParseDetectedExecutable(original_buffer,
     24                                          original_length,
     25                                          &program);
     26   EXPECT_EQ(courgette::C_OK, parse_status);
     27 
     28   courgette::EncodedProgram* encoded = NULL;
     29 
     30   const courgette::Status encode_status = Encode(program, &encoded);
     31   EXPECT_EQ(courgette::C_OK, encode_status);
     32 
     33   DeleteAssemblyProgram(program);
     34 
     35   courgette::SinkStreamSet sinks;
     36   const courgette::Status write_status = WriteEncodedProgram(encoded, &sinks);
     37   EXPECT_EQ(courgette::C_OK, write_status);
     38 
     39   DeleteEncodedProgram(encoded);
     40 
     41   courgette::SinkStream sink;
     42   bool can_collect = sinks.CopyTo(&sink);
     43   EXPECT_TRUE(can_collect);
     44 
     45   const void* buffer = sink.Buffer();
     46   size_t length = sink.Length();
     47 
     48   EXPECT_EQ(expected_encoded_lenth, length);
     49 
     50   courgette::SourceStreamSet sources;
     51   bool can_get_source_streams = sources.Init(buffer, length);
     52   EXPECT_TRUE(can_get_source_streams);
     53 
     54   courgette::EncodedProgram *encoded2 = NULL;
     55   const courgette::Status read_status = ReadEncodedProgram(&sources, &encoded2);
     56   EXPECT_EQ(courgette::C_OK, read_status);
     57 
     58   courgette::SinkStream assembled;
     59   const courgette::Status assemble_status = Assemble(encoded2, &assembled);
     60   EXPECT_EQ(courgette::C_OK, assemble_status);
     61 
     62   const void* assembled_buffer = assembled.Buffer();
     63   size_t assembled_length = assembled.Length();
     64 
     65   EXPECT_EQ(original_length, assembled_length);
     66   EXPECT_EQ(0, memcmp(original_buffer, assembled_buffer, original_length));
     67 
     68   DeleteEncodedProgram(encoded2);
     69 }
     70 
     71 TEST_F(EncodeDecodeTest, PE) {
     72   std::string file = FileContents("setup1.exe");
     73   TestAssembleToStreamDisassemble(file, 971850);
     74 }
     75 
     76 TEST_F(EncodeDecodeTest, PE64) {
     77   std::string file = FileContents("chrome64_1.exe");
     78   TestAssembleToStreamDisassemble(file, 814709);
     79 }
     80 
     81 TEST_F(EncodeDecodeTest, Elf_Small) {
     82   std::string file = FileContents("elf-32-1");
     83   TestAssembleToStreamDisassemble(file, 135988);
     84 }
     85