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| 1 // Copyright 2015 PDFium 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 <limits> | |
| 6 #include <string> | |
| 7 | |
| 8 #include "core/fpdfapi/fpdf_parser/cpdf_parser.h" | |
| 9 #include "core/fpdfapi/fpdf_parser/cpdf_syntax_parser.h" | |
| 10 #include "core/fxcrt/fx_ext.h" | |
| 11 #include "core/fxcrt/fx_stream.h" | |
| 12 #include "testing/gtest/include/gtest/gtest.h" | |
| 13 #include "testing/utils/path_service.h" | |
| 14 | |
| 15 // Provide a way to read test data from a buffer instead of a file. | |
| 16 class CFX_TestBufferRead : public IFX_FileRead { | |
| 17 public: | |
| 18 CFX_TestBufferRead(const unsigned char* buffer_in, size_t buf_size) | |
| 19 : buffer_(buffer_in), total_size_(buf_size) {} | |
| 20 | |
| 21 // IFX_Stream | |
| 22 void Release() override { delete this; } | |
| 23 | |
| 24 // IFX_FileRead | |
| 25 FX_BOOL ReadBlock(void* buffer, FX_FILESIZE offset, size_t size) override { | |
| 26 if (offset < 0 || offset + size > total_size_) { | |
| 27 return FALSE; | |
| 28 } | |
| 29 | |
| 30 memcpy(buffer, buffer_ + offset, size); | |
| 31 return TRUE; | |
| 32 } | |
| 33 FX_FILESIZE GetSize() override { return (FX_FILESIZE)total_size_; }; | |
| 34 | |
| 35 protected: | |
| 36 const unsigned char* buffer_; | |
| 37 size_t total_size_; | |
| 38 }; | |
| 39 | |
| 40 // A wrapper class to help test member functions of CPDF_Parser. | |
| 41 class CPDF_TestParser : public CPDF_Parser { | |
| 42 public: | |
| 43 CPDF_TestParser() {} | |
| 44 ~CPDF_TestParser() {} | |
| 45 | |
| 46 // Setup reading from a file and initial states. | |
| 47 bool InitTestFromFile(const FX_CHAR* path) { | |
| 48 IFX_FileRead* pFileAccess = FX_CreateFileRead(path); | |
| 49 if (!pFileAccess) | |
| 50 return false; | |
| 51 | |
| 52 // For the test file, the header is set at the beginning. | |
| 53 m_pSyntax->InitParser(pFileAccess, 0); | |
| 54 return true; | |
| 55 } | |
| 56 | |
| 57 // Setup reading from a buffer and initial states. | |
| 58 bool InitTestFromBuffer(const unsigned char* buffer, size_t len) { | |
| 59 CFX_TestBufferRead* buffer_reader = new CFX_TestBufferRead(buffer, len); | |
| 60 | |
| 61 // For the test file, the header is set at the beginning. | |
| 62 m_pSyntax->InitParser(buffer_reader, 0); | |
| 63 return true; | |
| 64 } | |
| 65 | |
| 66 private: | |
| 67 // Add test cases here as private friend so that protected members in | |
| 68 // CPDF_Parser can be accessed by test cases. | |
| 69 // Need to access RebuildCrossRef. | |
| 70 FRIEND_TEST(cpdf_parser, RebuildCrossRefCorrectly); | |
| 71 FRIEND_TEST(cpdf_parser, RebuildCrossRefFailed); | |
| 72 // Need to access LoadCrossRefV4. | |
| 73 FRIEND_TEST(cpdf_parser, LoadCrossRefV4); | |
| 74 }; | |
| 75 | |
| 76 TEST(cpdf_parser, RebuildCrossRefCorrectly) { | |
| 77 CPDF_TestParser parser; | |
| 78 std::string test_file; | |
| 79 ASSERT_TRUE(PathService::GetTestFilePath("parser_rebuildxref_correct.pdf", | |
| 80 &test_file)); | |
| 81 ASSERT_TRUE(parser.InitTestFromFile(test_file.c_str())) << test_file; | |
| 82 | |
| 83 ASSERT_TRUE(parser.RebuildCrossRef()); | |
| 84 const FX_FILESIZE offsets[] = {0, 15, 61, 154, 296, 374, 450}; | |
| 85 const uint16_t versions[] = {0, 0, 2, 4, 6, 8, 0}; | |
| 86 for (size_t i = 0; i < FX_ArraySize(offsets); ++i) | |
| 87 EXPECT_EQ(offsets[i], parser.m_ObjectInfo[i].pos); | |
| 88 for (size_t i = 0; i < FX_ArraySize(versions); ++i) | |
| 89 EXPECT_EQ(versions[i], parser.m_ObjectInfo[i].gennum); | |
| 90 } | |
| 91 | |
| 92 TEST(cpdf_parser, RebuildCrossRefFailed) { | |
| 93 CPDF_TestParser parser; | |
| 94 std::string test_file; | |
| 95 ASSERT_TRUE(PathService::GetTestFilePath( | |
| 96 "parser_rebuildxref_error_notrailer.pdf", &test_file)); | |
| 97 ASSERT_TRUE(parser.InitTestFromFile(test_file.c_str())) << test_file; | |
| 98 | |
| 99 ASSERT_FALSE(parser.RebuildCrossRef()); | |
| 100 } | |
| 101 | |
| 102 TEST(cpdf_parser, LoadCrossRefV4) { | |
| 103 { | |
| 104 const unsigned char xref_table[] = | |
| 105 "xref \n" | |
| 106 "0 6 \n" | |
| 107 "0000000003 65535 f \n" | |
| 108 "0000000017 00000 n \n" | |
| 109 "0000000081 00000 n \n" | |
| 110 "0000000000 00007 f \n" | |
| 111 "0000000331 00000 n \n" | |
| 112 "0000000409 00000 n \n" | |
| 113 "trail"; // Needed to end cross ref table reading. | |
| 114 CPDF_TestParser parser; | |
| 115 ASSERT_TRUE( | |
| 116 parser.InitTestFromBuffer(xref_table, FX_ArraySize(xref_table))); | |
| 117 | |
| 118 ASSERT_TRUE(parser.LoadCrossRefV4(0, 0, FALSE)); | |
| 119 const FX_FILESIZE offsets[] = {0, 17, 81, 0, 331, 409}; | |
| 120 const uint8_t types[] = {0, 1, 1, 0, 1, 1}; | |
| 121 for (size_t i = 0; i < FX_ArraySize(offsets); ++i) { | |
| 122 EXPECT_EQ(offsets[i], parser.m_ObjectInfo[i].pos); | |
| 123 EXPECT_EQ(types[i], parser.m_ObjectInfo[i].type); | |
| 124 } | |
| 125 } | |
| 126 { | |
| 127 const unsigned char xref_table[] = | |
| 128 "xref \n" | |
| 129 "0 1 \n" | |
| 130 "0000000000 65535 f \n" | |
| 131 "3 1 \n" | |
| 132 "0000025325 00000 n \n" | |
| 133 "8 2 \n" | |
| 134 "0000025518 00002 n \n" | |
| 135 "0000025635 00000 n \n" | |
| 136 "12 1 \n" | |
| 137 "0000025777 00000 n \n" | |
| 138 "trail"; // Needed to end cross ref table reading. | |
| 139 CPDF_TestParser parser; | |
| 140 ASSERT_TRUE( | |
| 141 parser.InitTestFromBuffer(xref_table, FX_ArraySize(xref_table))); | |
| 142 | |
| 143 ASSERT_TRUE(parser.LoadCrossRefV4(0, 0, FALSE)); | |
| 144 const FX_FILESIZE offsets[] = {0, 0, 0, 25325, 0, 0, 0, | |
| 145 0, 25518, 25635, 0, 0, 25777}; | |
| 146 const uint8_t types[] = {0, 0, 0, 1, 0, 0, 0, 0, 1, 1, 0, 0, 1}; | |
| 147 for (size_t i = 0; i < FX_ArraySize(offsets); ++i) { | |
| 148 EXPECT_EQ(offsets[i], parser.m_ObjectInfo[i].pos); | |
| 149 EXPECT_EQ(types[i], parser.m_ObjectInfo[i].type); | |
| 150 } | |
| 151 } | |
| 152 { | |
| 153 const unsigned char xref_table[] = | |
| 154 "xref \n" | |
| 155 "0 1 \n" | |
| 156 "0000000000 65535 f \n" | |
| 157 "3 1 \n" | |
| 158 "0000025325 00000 n \n" | |
| 159 "8 2 \n" | |
| 160 "0000000000 65535 f \n" | |
| 161 "0000025635 00000 n \n" | |
| 162 "12 1 \n" | |
| 163 "0000025777 00000 n \n" | |
| 164 "trail"; // Needed to end cross ref table reading. | |
| 165 CPDF_TestParser parser; | |
| 166 ASSERT_TRUE( | |
| 167 parser.InitTestFromBuffer(xref_table, FX_ArraySize(xref_table))); | |
| 168 | |
| 169 ASSERT_TRUE(parser.LoadCrossRefV4(0, 0, FALSE)); | |
| 170 const FX_FILESIZE offsets[] = {0, 0, 0, 25325, 0, 0, 0, | |
| 171 0, 0, 25635, 0, 0, 25777}; | |
| 172 const uint8_t types[] = {0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 1}; | |
| 173 for (size_t i = 0; i < FX_ArraySize(offsets); ++i) { | |
| 174 EXPECT_EQ(offsets[i], parser.m_ObjectInfo[i].pos); | |
| 175 EXPECT_EQ(types[i], parser.m_ObjectInfo[i].type); | |
| 176 } | |
| 177 } | |
| 178 { | |
| 179 const unsigned char xref_table[] = | |
| 180 "xref \n" | |
| 181 "0 7 \n" | |
| 182 "0000000002 65535 f \n" | |
| 183 "0000000023 00000 n \n" | |
| 184 "0000000003 65535 f \n" | |
| 185 "0000000004 65535 f \n" | |
| 186 "0000000000 65535 f \n" | |
| 187 "0000000045 00000 n \n" | |
| 188 "0000000179 00000 n \n" | |
| 189 "trail"; // Needed to end cross ref table reading. | |
| 190 CPDF_TestParser parser; | |
| 191 ASSERT_TRUE( | |
| 192 parser.InitTestFromBuffer(xref_table, FX_ArraySize(xref_table))); | |
| 193 | |
| 194 ASSERT_TRUE(parser.LoadCrossRefV4(0, 0, FALSE)); | |
| 195 const FX_FILESIZE offsets[] = {0, 23, 0, 0, 0, 45, 179}; | |
| 196 const uint8_t types[] = {0, 1, 0, 0, 0, 1, 1}; | |
| 197 for (size_t i = 0; i < FX_ArraySize(offsets); ++i) { | |
| 198 EXPECT_EQ(offsets[i], parser.m_ObjectInfo[i].pos); | |
| 199 EXPECT_EQ(types[i], parser.m_ObjectInfo[i].type); | |
| 200 } | |
| 201 } | |
| 202 } | |
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Chromium Code Reviews
Issue 2392603004:
Move core/fpdfapi/fpdf_parser to core/fpdfapi/parser (Closed)
