1    :  // Copyright 2013 Google Inc. All Rights Reserved.
   2    :  //
   3    :  // Licensed under the Apache License, Version 2.0 (the "License");
   4    :  // you may not use this file except in compliance with the License.
   5    :  // You may obtain a copy of the License at
   6    :  //
   7    :  //     http://www.apache.org/licenses/LICENSE-2.0
   8    :  //
   9    :  // Unless required by applicable law or agreed to in writing, software
  10    :  // distributed under the License is distributed on an "AS IS" BASIS,
  11    :  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  12    :  // See the License for the specific language governing permissions and
  13    :  // limitations under the License.
  14    :  
  15    :  #include "syzygy/pehacker/operations/add_imports_operation.h"
  16    :  
  17    :  #include "gmock/gmock.h"
  18    :  #include "gtest/gtest.h"
  19    :  #include "syzygy/pe/pe_transform_policy.h"
  20    :  #include "syzygy/pehacker/unittest_util.h"
  21    :  
  22    :  namespace pehacker {
  23    :  namespace operations {
  24    :  
  25    :  namespace {
  26    :  
  27    :  using block_graph::BlockGraph;
  28    :  using testing::Return;
  29    :  
  30    :  const char kSimpleConfig[] =
  31    :      "{\n"
  32    :      "  \"type\": \"add_imports\",\n"
  33    :      "  \"modules\": [\n"
  34    :      "    {\n"
  35    :      "      \"module_name\": \"foo.dll\","
  36    :      "      \"imports\": [\n"
  37    :      "        { \"function_name\": \"bar\" },\n"
  38    :      "      ]\n"
  39    :      "    },\n"
  40    :      "  ],\n"
  41    :      "}";
  42    :  
  43    :  class TestAddImportsOperation : public AddImportsOperation {
  44    :   public:
  45  E :    TestAddImportsOperation() { }
  46  E :    virtual ~TestAddImportsOperation() { }
  47    :  
  48    :    MOCK_METHOD4(ApplyTransform, bool(block_graph::BlockGraphTransformInterface*,
  49    :                                      const TransformPolicyInterface*,
  50    :                                      BlockGraph*,
  51  E :                                      BlockGraph::Block*));
  52    :  
  53    :    typedef AddImportsOperation::ImportedModuleMap ImportedModuleMap;
  54    :  
  55    :    using AddImportsOperation::add_imports_tx_;
  56    :    using AddImportsOperation::imported_modules_;
  57    :    using AddImportsOperation::imported_module_map_;
  58    :  };
  59    :  
  60    :  typedef testing::OperationTest AddImportsOperationTest;
  61    :  
  62    :  }  // namespace
  63    :  
  64  E :  TEST_F(AddImportsOperationTest, Name) {
  65  E :    TestAddImportsOperation op;
  66  E :    EXPECT_STREQ(TestAddImportsOperation::kName, op.name());
  67  E :  }
  68    :  
  69  E :  TEST_F(AddImportsOperationTest, Init) {
  70  E :    TestAddImportsOperation op;
  71  E :    ASSERT_NO_FATAL_FAILURE(InitConfig(kSimpleConfig));
  72  E :    pe::PETransformPolicy policy;
  73  E :    EXPECT_TRUE(op.Init(&policy, config_.get()));
  74    :  
  75  E :    EXPECT_EQ(1u, op.imported_modules_.size());
  76  E :    EXPECT_EQ(1u, op.imported_module_map_.size());
  77    :  
  78    :    // Ensure the transform is appropriately configured.
  79    :    TestAddImportsOperation::ImportedModuleMap::iterator mod_it =
  80  E :        op.imported_module_map_.begin();
  81  E :    EXPECT_EQ("foo.dll", mod_it->first);
  82  E :    EXPECT_EQ(op.imported_modules_[0], mod_it->second);
  83  E :    EXPECT_EQ("foo.dll", mod_it->second->name());
  84  E :    EXPECT_EQ(1u, mod_it->second->size());
  85  E :    EXPECT_EQ("bar", mod_it->second->GetSymbolName(0));
  86    :    EXPECT_EQ(pe::transforms::ImportedModule::kAlwaysImport,
  87  E :              mod_it->second->GetSymbolMode(0));
  88  E :  }
  89    :  
  90  E :  TEST_F(AddImportsOperationTest, RunFails) {
  91  E :    TestAddImportsOperation op;
  92  E :    ASSERT_NO_FATAL_FAILURE(InitConfig(kSimpleConfig));
  93  E :    pe::PETransformPolicy policy;
  94  E :    ASSERT_TRUE(op.Init(&policy, config_.get()));
  95    :  
  96  E :    BlockGraph bg;
  97  E :    BlockGraph::Block* header = bg.AddBlock(BlockGraph::DATA_BLOCK, 1, "header");
  98    :  
  99    :    EXPECT_CALL(op, ApplyTransform(&op.add_imports_tx_,
 100    :                                   &policy,
 101    :                                   &bg,
 102  E :                                   header)).WillOnce(Return(false));
 103    :  
 104  E :    EXPECT_FALSE(op.Apply(&policy, &bg, header));
 105  E :  }
 106    :  
 107  E :  TEST_F(AddImportsOperationTest, RunSucceeds) {
 108  E :    TestAddImportsOperation op;
 109  E :    ASSERT_NO_FATAL_FAILURE(InitConfig(kSimpleConfig));
 110  E :    pe::PETransformPolicy policy;
 111  E :    ASSERT_TRUE(op.Init(&policy, config_.get()));
 112    :  
 113  E :    BlockGraph bg;
 114  E :    BlockGraph::Block* header = bg.AddBlock(BlockGraph::DATA_BLOCK, 1, "header");
 115    :  
 116    :    EXPECT_CALL(op, ApplyTransform(&op.add_imports_tx_,
 117    :                                   &policy,
 118    :                                   &bg,
 119  E :                                   header)).WillOnce(Return(true));
 120    :  
 121  E :    EXPECT_TRUE(op.Apply(&policy, &bg, header));
 122  E :  }
 123    :  
 124    :  }  // namespace operations
 125    :  }  // namespace pehacker