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      1 /*
      2  * Copyright (C) 2011 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 #include "dex_file.h"
     18 
     19 #include <memory>
     20 
     21 #include "base/stl_util.h"
     22 #include "base/unix_file/fd_file.h"
     23 #include "common_runtime_test.h"
     24 #include "dex_file-inl.h"
     25 #include "mem_map.h"
     26 #include "os.h"
     27 #include "scoped_thread_state_change-inl.h"
     28 #include "thread-inl.h"
     29 #include "utils.h"
     30 
     31 namespace art {
     32 
     33 class DexFileTest : public CommonRuntimeTest {};
     34 
     35 TEST_F(DexFileTest, Open) {
     36   ScopedObjectAccess soa(Thread::Current());
     37   std::unique_ptr<const DexFile> dex(OpenTestDexFile("Nested"));
     38   ASSERT_TRUE(dex.get() != nullptr);
     39 }
     40 
     41 static inline std::vector<uint8_t> DecodeBase64Vec(const char* src) {
     42   std::vector<uint8_t> res;
     43   size_t size;
     44   std::unique_ptr<uint8_t[]> data(DecodeBase64(src, &size));
     45   res.resize(size);
     46   memcpy(res.data(), data.get(), size);
     47   return res;
     48 }
     49 
     50 // Although this is the same content logically as the Nested test dex,
     51 // the DexFileHeader test is sensitive to subtle changes in the
     52 // contents due to the checksum etc, so we embed the exact input here.
     53 //
     54 // class Nested {
     55 //     class Inner {
     56 //     }
     57 // }
     58 static const char kRawDex[] =
     59   "ZGV4CjAzNQAQedgAe7gM1B/WHsWJ6L7lGAISGC7yjD2IAwAAcAAAAHhWNBIAAAAAAAAAAMQCAAAP"
     60   "AAAAcAAAAAcAAACsAAAAAgAAAMgAAAABAAAA4AAAAAMAAADoAAAAAgAAAAABAABIAgAAQAEAAK4B"
     61   "AAC2AQAAvQEAAM0BAADXAQAA+wEAABsCAAA+AgAAUgIAAF8CAABiAgAAZgIAAHMCAAB5AgAAgQIA"
     62   "AAIAAAADAAAABAAAAAUAAAAGAAAABwAAAAkAAAAJAAAABgAAAAAAAAAKAAAABgAAAKgBAAAAAAEA"
     63   "DQAAAAAAAQAAAAAAAQAAAAAAAAAFAAAAAAAAAAAAAAAAAAAABQAAAAAAAAAIAAAAiAEAAKsCAAAA"
     64   "AAAAAQAAAAAAAAAFAAAAAAAAAAgAAACYAQAAuAIAAAAAAAACAAAAlAIAAJoCAAABAAAAowIAAAIA"
     65   "AgABAAAAiAIAAAYAAABbAQAAcBACAAAADgABAAEAAQAAAI4CAAAEAAAAcBACAAAADgBAAQAAAAAA"
     66   "AAAAAAAAAAAATAEAAAAAAAAAAAAAAAAAAAEAAAABAAY8aW5pdD4ABUlubmVyAA5MTmVzdGVkJElu"
     67   "bmVyOwAITE5lc3RlZDsAIkxkYWx2aWsvYW5ub3RhdGlvbi9FbmNsb3NpbmdDbGFzczsAHkxkYWx2"
     68   "aWsvYW5ub3RhdGlvbi9Jbm5lckNsYXNzOwAhTGRhbHZpay9hbm5vdGF0aW9uL01lbWJlckNsYXNz"
     69   "ZXM7ABJMamF2YS9sYW5nL09iamVjdDsAC05lc3RlZC5qYXZhAAFWAAJWTAALYWNjZXNzRmxhZ3MA"
     70   "BG5hbWUABnRoaXMkMAAFdmFsdWUAAgEABw4AAQAHDjwAAgIBDhgBAgMCCwQADBcBAgQBDhwBGAAA"
     71   "AQEAAJAgAICABNQCAAABAAGAgATwAgAAEAAAAAAAAAABAAAAAAAAAAEAAAAPAAAAcAAAAAIAAAAH"
     72   "AAAArAAAAAMAAAACAAAAyAAAAAQAAAABAAAA4AAAAAUAAAADAAAA6AAAAAYAAAACAAAAAAEAAAMQ"
     73   "AAACAAAAQAEAAAEgAAACAAAAVAEAAAYgAAACAAAAiAEAAAEQAAABAAAAqAEAAAIgAAAPAAAArgEA"
     74   "AAMgAAACAAAAiAIAAAQgAAADAAAAlAIAAAAgAAACAAAAqwIAAAAQAAABAAAAxAIAAA==";
     75 
     76 // kRawDex38 and 39 are dex'ed versions of the following Java source :
     77 //
     78 // public class Main {
     79 //     public static void main(String[] foo) {
     80 //     }
     81 // }
     82 //
     83 // The dex file was manually edited to change its dex version code to 38
     84 // or 39, respectively.
     85 static const char kRawDex38[] =
     86   "ZGV4CjAzOAC4OovJlJ1089ikzK6asMf/f8qp3Kve5VsgAgAAcAAAAHhWNBIAAAAAAAAAAIwBAAAI"
     87   "AAAAcAAAAAQAAACQAAAAAgAAAKAAAAAAAAAAAAAAAAMAAAC4AAAAAQAAANAAAAAwAQAA8AAAACIB"
     88   "AAAqAQAAMgEAAEYBAABRAQAAVAEAAFgBAABtAQAAAQAAAAIAAAAEAAAABgAAAAQAAAACAAAAAAAA"
     89   "AAUAAAACAAAAHAEAAAAAAAAAAAAAAAABAAcAAAABAAAAAAAAAAAAAAABAAAAAQAAAAAAAAADAAAA"
     90   "AAAAAH4BAAAAAAAAAQABAAEAAABzAQAABAAAAHAQAgAAAA4AAQABAAAAAAB4AQAAAQAAAA4AAAAB"
     91   "AAAAAwAGPGluaXQ+AAZMTWFpbjsAEkxqYXZhL2xhbmcvT2JqZWN0OwAJTWFpbi5qYXZhAAFWAAJW"
     92   "TAATW0xqYXZhL2xhbmcvU3RyaW5nOwAEbWFpbgABAAcOAAMBAAcOAAAAAgAAgYAE8AEBCYgCDAAA"
     93   "AAAAAAABAAAAAAAAAAEAAAAIAAAAcAAAAAIAAAAEAAAAkAAAAAMAAAACAAAAoAAAAAUAAAADAAAA"
     94   "uAAAAAYAAAABAAAA0AAAAAEgAAACAAAA8AAAAAEQAAABAAAAHAEAAAIgAAAIAAAAIgEAAAMgAAAC"
     95   "AAAAcwEAAAAgAAABAAAAfgEAAAAQAAABAAAAjAEAAA==";
     96 
     97 static const char kRawDex39[] =
     98   "ZGV4CjAzOQC4OovJlJ1089ikzK6asMf/f8qp3Kve5VsgAgAAcAAAAHhWNBIAAAAAAAAAAIwBAAAI"
     99   "AAAAcAAAAAQAAACQAAAAAgAAAKAAAAAAAAAAAAAAAAMAAAC4AAAAAQAAANAAAAAwAQAA8AAAACIB"
    100   "AAAqAQAAMgEAAEYBAABRAQAAVAEAAFgBAABtAQAAAQAAAAIAAAAEAAAABgAAAAQAAAACAAAAAAAA"
    101   "AAUAAAACAAAAHAEAAAAAAAAAAAAAAAABAAcAAAABAAAAAAAAAAAAAAABAAAAAQAAAAAAAAADAAAA"
    102   "AAAAAH4BAAAAAAAAAQABAAEAAABzAQAABAAAAHAQAgAAAA4AAQABAAAAAAB4AQAAAQAAAA4AAAAB"
    103   "AAAAAwAGPGluaXQ+AAZMTWFpbjsAEkxqYXZhL2xhbmcvT2JqZWN0OwAJTWFpbi5qYXZhAAFWAAJW"
    104   "TAATW0xqYXZhL2xhbmcvU3RyaW5nOwAEbWFpbgABAAcOAAMBAAcOAAAAAgAAgYAE8AEBCYgCDAAA"
    105   "AAAAAAABAAAAAAAAAAEAAAAIAAAAcAAAAAIAAAAEAAAAkAAAAAMAAAACAAAAoAAAAAUAAAADAAAA"
    106   "uAAAAAYAAAABAAAA0AAAAAEgAAACAAAA8AAAAAEQAAABAAAAHAEAAAIgAAAIAAAAIgEAAAMgAAAC"
    107   "AAAAcwEAAAAgAAABAAAAfgEAAAAQAAABAAAAjAEAAA==";
    108 
    109 static const char kRawDexZeroLength[] =
    110   "UEsDBAoAAAAAAOhxAkkAAAAAAAAAAAAAAAALABwAY2xhc3Nlcy5kZXhVVAkAA2QNoVdnDaFXdXgL"
    111   "AAEE5AMBAASIEwAAUEsBAh4DCgAAAAAA6HECSQAAAAAAAAAAAAAAAAsAGAAAAAAAAAAAAKCBAAAA"
    112   "AGNsYXNzZXMuZGV4VVQFAANkDaFXdXgLAAEE5AMBAASIEwAAUEsFBgAAAAABAAEAUQAAAEUAAAAA"
    113   "AA==";
    114 
    115 static const char kRawZipClassesDexPresent[] =
    116   "UEsDBBQAAAAIANVRN0ms99lIMQEAACACAAALABwAY2xhc3Nlcy5kZXhVVAkAAwFj5VcUY+VXdXgL"
    117   "AAEE5AMBAASIEwAAS0mt4DIwtmDYYdV9csrcks83lpxZN2vD8f/1p1beWX3vabQCEwNDAQMDQ0WY"
    118   "iRADFPQwMjBwMEDEWYB4AhADlTEsYEAAZiDeAcRApQwXgNgAyPgApJWAtBYQGwGxGxAHAnEIEEcA"
    119   "cS4jRD0T1Fw2KM0ENZMVypZhRLIIqIMdag9CBMFnhtJ1jDA5RrBcMSPE7AIBkIl8UFGgP6Fu4IOa"
    120   "wczAZpOZl1lix8Dm45uYmWfNIOSTlViWqJ+TmJeu75+UlZpcYs3ACZLSA4kzMIYxMIX5MAhHIykL"
    121   "LinKzEu3ZmDJBSoDOZiPgRlMgv3T2MDygZGRs4OJB8n9MBoWzrAwmQD1Eyy8WZHCmg0pvBkVIGpA"
    122   "Yc4oABEHhRuTAsRMUDwwQ9WAwoJBAaIGHE5Q9aB4BgBQSwECHgMUAAAACADVUTdJrPfZSDEBAAAg"
    123   "AgAACwAYAAAAAAAAAAAAoIEAAAAAY2xhc3Nlcy5kZXhVVAUAAwFj5Vd1eAsAAQTkAwEABIgTAABQ"
    124   "SwUGAAAAAAEAAQBRAAAAdgEAAAAA";
    125 
    126 static const char kRawZipClassesDexAbsent[] =
    127   "UEsDBBQAAAAIANVRN0ms99lIMQEAACACAAAOABwAbm90Y2xhc3Nlcy5kZXhVVAkAAwFj5VcUY+VX"
    128   "dXgLAAEE5AMBAASIEwAAS0mt4DIwtmDYYdV9csrcks83lpxZN2vD8f/1p1beWX3vabQCEwNDAQMD"
    129   "Q0WYiRADFPQwMjBwMEDEWYB4AhADlTEsYEAAZiDeAcRApQwXgNgAyPgApJWAtBYQGwGxGxAHAnEI"
    130   "EEcAcS4jRD0T1Fw2KM0ENZMVypZhRLIIqIMdag9CBMFnhtJ1jDA5RrBcMSPE7AIBkIl8UFGgP6Fu"
    131   "4IOawczAZpOZl1lix8Dm45uYmWfNIOSTlViWqJ+TmJeu75+UlZpcYs3ACZLSA4kzMIYxMIX5MAhH"
    132   "IykLLinKzEu3ZmDJBSoDOZiPgRlMgv3T2MDygZGRs4OJB8n9MBoWzrAwmQD1Eyy8WZHCmg0pvBkV"
    133   "IGpAYc4oABEHhRuTAsRMUDwwQ9WAwoJBAaIGHE5Q9aB4BgBQSwECHgMUAAAACADVUTdJrPfZSDEB"
    134   "AAAgAgAADgAYAAAAAAAAAAAAoIEAAAAAbm90Y2xhc3Nlcy5kZXhVVAUAAwFj5Vd1eAsAAQTkAwEA"
    135   "BIgTAABQSwUGAAAAAAEAAQBUAAAAeQEAAAAA";
    136 
    137 static const char kRawZipThreeDexFiles[] =
    138   "UEsDBBQAAAAIAP1WN0ms99lIMQEAACACAAAMABwAY2xhc3NlczIuZGV4VVQJAAOtbOVXrWzlV3V4"
    139   "CwABBOQDAQAEiBMAAEtJreAyMLZg2GHVfXLK3JLPN5acWTdrw/H/9adW3ll972m0AhMDQwEDA0NF"
    140   "mIkQAxT0MDIwcDBAxFmAeAIQA5UxLGBAAGYg3gHEQKUMF4DYAMj4AKSVgLQWEBsBsRsQBwJxCBBH"
    141   "AHEuI0Q9E9RcNijNBDWTFcqWYUSyCKiDHWoPQgTBZ4bSdYwwOUawXDEjxOwCAZCJfFBRoD+hbuCD"
    142   "msHMwGaTmZdZYsfA5uObmJlnzSDkk5VYlqifk5iXru+flJWaXGLNwAmS0gOJMzCGMTCF+TAIRyMp"
    143   "Cy4pysxLt2ZgyQUqAzmYj4EZTIL909jA8oGRkbODiQfJ/TAaFs6wMJkA9RMsvFmRwpoNKbwZFSBq"
    144   "QGHOKAARB4UbkwLETFA8MEPVgMKCQQGiBhxOUPWgeAYAUEsDBBQAAAAIAABXN0ms99lIMQEAACAC"
    145   "AAAMABwAY2xhc3NlczMuZGV4VVQJAAOvbOVXr2zlV3V4CwABBOQDAQAEiBMAAEtJreAyMLZg2GHV"
    146   "fXLK3JLPN5acWTdrw/H/9adW3ll972m0AhMDQwEDA0NFmIkQAxT0MDIwcDBAxFmAeAIQA5UxLGBA"
    147   "AGYg3gHEQKUMF4DYAMj4AKSVgLQWEBsBsRsQBwJxCBBHAHEuI0Q9E9RcNijNBDWTFcqWYUSyCKiD"
    148   "HWoPQgTBZ4bSdYwwOUawXDEjxOwCAZCJfFBRoD+hbuCDmsHMwGaTmZdZYsfA5uObmJlnzSDkk5VY"
    149   "lqifk5iXru+flJWaXGLNwAmS0gOJMzCGMTCF+TAIRyMpCy4pysxLt2ZgyQUqAzmYj4EZTIL909jA"
    150   "8oGRkbODiQfJ/TAaFs6wMJkA9RMsvFmRwpoNKbwZFSBqQGHOKAARB4UbkwLETFA8MEPVgMKCQQGi"
    151   "BhxOUPWgeAYAUEsDBBQAAAAIANVRN0ms99lIMQEAACACAAALABwAY2xhc3Nlcy5kZXhVVAkAAwFj"
    152   "5VetbOVXdXgLAAEE5AMBAASIEwAAS0mt4DIwtmDYYdV9csrcks83lpxZN2vD8f/1p1beWX3vabQC"
    153   "EwNDAQMDQ0WYiRADFPQwMjBwMEDEWYB4AhADlTEsYEAAZiDeAcRApQwXgNgAyPgApJWAtBYQGwGx"
    154   "GxAHAnEIEEcAcS4jRD0T1Fw2KM0ENZMVypZhRLIIqIMdag9CBMFnhtJ1jDA5RrBcMSPE7AIBkIl8"
    155   "UFGgP6Fu4IOawczAZpOZl1lix8Dm45uYmWfNIOSTlViWqJ+TmJeu75+UlZpcYs3ACZLSA4kzMIYx"
    156   "MIX5MAhHIykLLinKzEu3ZmDJBSoDOZiPgRlMgv3T2MDygZGRs4OJB8n9MBoWzrAwmQD1Eyy8WZHC"
    157   "mg0pvBkVIGpAYc4oABEHhRuTAsRMUDwwQ9WAwoJBAaIGHE5Q9aB4BgBQSwECHgMUAAAACAD9VjdJ"
    158   "rPfZSDEBAAAgAgAADAAYAAAAAAAAAAAAoIEAAAAAY2xhc3NlczIuZGV4VVQFAAOtbOVXdXgLAAEE"
    159   "5AMBAASIEwAAUEsBAh4DFAAAAAgAAFc3Saz32UgxAQAAIAIAAAwAGAAAAAAAAAAAAKCBdwEAAGNs"
    160   "YXNzZXMzLmRleFVUBQADr2zlV3V4CwABBOQDAQAEiBMAAFBLAQIeAxQAAAAIANVRN0ms99lIMQEA"
    161   "ACACAAALABgAAAAAAAAAAACgge4CAABjbGFzc2VzLmRleFVUBQADAWPlV3V4CwABBOQDAQAEiBMA"
    162   "AFBLBQYAAAAAAwADAPUAAABkBAAAAAA=";
    163 
    164 static const char kRawDexBadMapOffset[] =
    165   "ZGV4CjAzNQAZKGSz85r+tXJ1I24FYi+FpQtWbXtelAmoAQAAcAAAAHhWNBIAAAAAAAAAAEAwIBAF"
    166   "AAAAcAAAAAMAAACEAAAAAQAAAJAAAAAAAAAAAAAAAAIAAACcAAAAAQAAAKwAAADcAAAAzAAAAOQA"
    167   "AADsAAAA9AAAAPkAAAANAQAAAgAAAAMAAAAEAAAABAAAAAIAAAAAAAAAAAAAAAAAAAABAAAAAAAA"
    168   "AAAAAAABAAAAAQAAAAAAAAABAAAAAAAAABUBAAAAAAAAAQABAAEAAAAQAQAABAAAAHAQAQAAAA4A"
    169   "Bjxpbml0PgAGQS5qYXZhAANMQTsAEkxqYXZhL2xhbmcvT2JqZWN0OwABVgABAAcOAAAAAQAAgYAE"
    170   "zAEACwAAAAAAAAABAAAAAAAAAAEAAAAFAAAAcAAAAAIAAAADAAAAhAAAAAMAAAABAAAAkAAAAAUA"
    171   "AAACAAAAnAAAAAYAAAABAAAArAAAAAEgAAABAAAAzAAAAAIgAAAFAAAA5AAAAAMgAAABAAAAEAEA"
    172   "AAAgAAABAAAAFQEAAAAQAAABAAAAIAEAAA==";
    173 
    174 static const char kRawDexDebugInfoLocalNullType[] =
    175     "ZGV4CjAzNQA+Kwj2g6OZMH88OvK9Ey6ycdIsFCt18ED8AQAAcAAAAHhWNBIAAAAAAAAAAHQBAAAI"
    176     "AAAAcAAAAAQAAACQAAAAAgAAAKAAAAAAAAAAAAAAAAMAAAC4AAAAAQAAANAAAAAMAQAA8AAAABwB"
    177     "AAAkAQAALAEAAC8BAAA0AQAASAEAAEsBAABOAQAAAgAAAAMAAAAEAAAABQAAAAIAAAAAAAAAAAAA"
    178     "AAUAAAADAAAAAAAAAAEAAQAAAAAAAQAAAAYAAAACAAEAAAAAAAEAAAABAAAAAgAAAAAAAAABAAAA"
    179     "AAAAAGMBAAAAAAAAAQABAAEAAABUAQAABAAAAHAQAgAAAA4AAgABAAAAAABZAQAAAgAAABIQDwAG"
    180     "PGluaXQ+AAZBLmphdmEAAUkAA0xBOwASTGphdmEvbGFuZy9PYmplY3Q7AAFWAAFhAAR0aGlzAAEA"
    181     "Bw4AAwAHDh4DAAcAAAAAAQEAgYAE8AEBAIgCAAAACwAAAAAAAAABAAAAAAAAAAEAAAAIAAAAcAAA"
    182     "AAIAAAAEAAAAkAAAAAMAAAACAAAAoAAAAAUAAAADAAAAuAAAAAYAAAABAAAA0AAAAAEgAAACAAAA"
    183     "8AAAAAIgAAAIAAAAHAEAAAMgAAACAAAAVAEAAAAgAAABAAAAYwEAAAAQAAABAAAAdAEAAA==";
    184 
    185 static void DecodeAndWriteDexFile(const char* base64, const char* location) {
    186   // decode base64
    187   CHECK(base64 != nullptr);
    188   std::vector<uint8_t> dex_bytes = DecodeBase64Vec(base64);
    189   CHECK_NE(dex_bytes.size(), 0u);
    190 
    191   // write to provided file
    192   std::unique_ptr<File> file(OS::CreateEmptyFile(location));
    193   CHECK(file.get() != nullptr);
    194   if (!file->WriteFully(dex_bytes.data(), dex_bytes.size())) {
    195     PLOG(FATAL) << "Failed to write base64 as dex file";
    196   }
    197   if (file->FlushCloseOrErase() != 0) {
    198     PLOG(FATAL) << "Could not flush and close test file.";
    199   }
    200 }
    201 
    202 static bool OpenDexFilesBase64(const char* base64,
    203                                const char* location,
    204                                std::vector<std::unique_ptr<const DexFile>>* dex_files,
    205                                std::string* error_msg) {
    206   DecodeAndWriteDexFile(base64, location);
    207 
    208   // read dex file(s)
    209   ScopedObjectAccess soa(Thread::Current());
    210   static constexpr bool kVerifyChecksum = true;
    211   std::vector<std::unique_ptr<const DexFile>> tmp;
    212   bool success = DexFile::Open(location, location, kVerifyChecksum, error_msg, &tmp);
    213   if (success) {
    214     for (std::unique_ptr<const DexFile>& dex_file : tmp) {
    215       EXPECT_EQ(PROT_READ, dex_file->GetPermissions());
    216       EXPECT_TRUE(dex_file->IsReadOnly());
    217     }
    218     *dex_files = std::move(tmp);
    219   }
    220   return success;
    221 }
    222 
    223 static std::unique_ptr<const DexFile> OpenDexFileBase64(const char* base64,
    224                                                         const char* location) {
    225   // read dex files.
    226   std::string error_msg;
    227   std::vector<std::unique_ptr<const DexFile>> dex_files;
    228   bool success = OpenDexFilesBase64(base64, location, &dex_files, &error_msg);
    229   CHECK(success) << error_msg;
    230   EXPECT_EQ(1U, dex_files.size());
    231   return std::move(dex_files[0]);
    232 }
    233 
    234 static std::unique_ptr<const DexFile> OpenDexFileInMemoryBase64(const char* base64,
    235                                                                 const char* location,
    236                                                                 uint32_t location_checksum,
    237                                                                 bool expect_success) {
    238   CHECK(base64 != nullptr);
    239   std::vector<uint8_t> dex_bytes = DecodeBase64Vec(base64);
    240   CHECK_NE(dex_bytes.size(), 0u);
    241 
    242   std::string error_message;
    243   std::unique_ptr<MemMap> region(MemMap::MapAnonymous("test-region",
    244                                                       nullptr,
    245                                                       dex_bytes.size(),
    246                                                       PROT_READ | PROT_WRITE,
    247                                                       /* low_4gb */ false,
    248                                                       /* reuse */ false,
    249                                                       &error_message));
    250   memcpy(region->Begin(), dex_bytes.data(), dex_bytes.size());
    251   std::unique_ptr<const DexFile> dex_file(DexFile::Open(location,
    252                                                         location_checksum,
    253                                                         std::move(region),
    254                                                         /* verify */ true,
    255                                                         /* verify_checksum */ true,
    256                                                         &error_message));
    257   if (expect_success) {
    258     CHECK(dex_file != nullptr) << error_message;
    259   } else {
    260     CHECK(dex_file == nullptr) << "Expected dex file open to fail.";
    261   }
    262   return dex_file;
    263 }
    264 
    265 static void ValidateDexFileHeader(std::unique_ptr<const DexFile> dex_file) {
    266   static const uint8_t kExpectedDexFileMagic[8] = {
    267     /* d */ 0x64, /* e */ 0x64, /* x */ 0x78, /* \n */ 0x0d,
    268     /* 0 */ 0x30, /* 3 */ 0x33, /* 5 */ 0x35, /* \0 */ 0x00
    269   };
    270   static const uint8_t kExpectedSha1[DexFile::kSha1DigestSize] = {
    271     0x7b, 0xb8, 0x0c, 0xd4, 0x1f, 0xd6, 0x1e, 0xc5,
    272     0x89, 0xe8, 0xbe, 0xe5, 0x18, 0x02, 0x12, 0x18,
    273     0x2e, 0xf2, 0x8c, 0x3d,
    274   };
    275 
    276   const DexFile::Header& header = dex_file->GetHeader();
    277   EXPECT_EQ(*kExpectedDexFileMagic, *header.magic_);
    278   EXPECT_EQ(0x00d87910U, header.checksum_);
    279   EXPECT_EQ(*kExpectedSha1, *header.signature_);
    280   EXPECT_EQ(904U, header.file_size_);
    281   EXPECT_EQ(112U, header.header_size_);
    282   EXPECT_EQ(0U, header.link_size_);
    283   EXPECT_EQ(0U, header.link_off_);
    284   EXPECT_EQ(15U, header.string_ids_size_);
    285   EXPECT_EQ(112U, header.string_ids_off_);
    286   EXPECT_EQ(7U, header.type_ids_size_);
    287   EXPECT_EQ(172U, header.type_ids_off_);
    288   EXPECT_EQ(2U, header.proto_ids_size_);
    289   EXPECT_EQ(200U, header.proto_ids_off_);
    290   EXPECT_EQ(1U, header.field_ids_size_);
    291   EXPECT_EQ(224U, header.field_ids_off_);
    292   EXPECT_EQ(3U, header.method_ids_size_);
    293   EXPECT_EQ(232U, header.method_ids_off_);
    294   EXPECT_EQ(2U, header.class_defs_size_);
    295   EXPECT_EQ(256U, header.class_defs_off_);
    296   EXPECT_EQ(584U, header.data_size_);
    297   EXPECT_EQ(320U, header.data_off_);
    298 
    299   EXPECT_EQ(header.checksum_, dex_file->GetLocationChecksum());
    300 }
    301 
    302 TEST_F(DexFileTest, Header) {
    303   ScratchFile tmp;
    304   std::unique_ptr<const DexFile> raw(OpenDexFileBase64(kRawDex, tmp.GetFilename().c_str()));
    305   ValidateDexFileHeader(std::move(raw));
    306 }
    307 
    308 TEST_F(DexFileTest, HeaderInMemory) {
    309   ScratchFile tmp;
    310   std::unique_ptr<const DexFile> raw =
    311       OpenDexFileInMemoryBase64(kRawDex, tmp.GetFilename().c_str(), 0x00d87910U, true);
    312   ValidateDexFileHeader(std::move(raw));
    313 }
    314 
    315 TEST_F(DexFileTest, Version38Accepted) {
    316   ScratchFile tmp;
    317   std::unique_ptr<const DexFile> raw(OpenDexFileBase64(kRawDex38, tmp.GetFilename().c_str()));
    318   ASSERT_TRUE(raw.get() != nullptr);
    319 
    320   const DexFile::Header& header = raw->GetHeader();
    321   EXPECT_EQ(38u, header.GetVersion());
    322 }
    323 
    324 TEST_F(DexFileTest, Version39Rejected) {
    325   ScratchFile tmp;
    326   const char* location = tmp.GetFilename().c_str();
    327   DecodeAndWriteDexFile(kRawDex39, location);
    328 
    329   ScopedObjectAccess soa(Thread::Current());
    330   static constexpr bool kVerifyChecksum = true;
    331   std::string error_msg;
    332   std::vector<std::unique_ptr<const DexFile>> dex_files;
    333   ASSERT_FALSE(DexFile::Open(location, location, kVerifyChecksum, &error_msg, &dex_files));
    334 }
    335 
    336 TEST_F(DexFileTest, ZeroLengthDexRejected) {
    337   ScratchFile tmp;
    338   const char* location = tmp.GetFilename().c_str();
    339   DecodeAndWriteDexFile(kRawDexZeroLength, location);
    340 
    341   ScopedObjectAccess soa(Thread::Current());
    342   static constexpr bool kVerifyChecksum = true;
    343   std::string error_msg;
    344   std::vector<std::unique_ptr<const DexFile>> dex_files;
    345   ASSERT_FALSE(DexFile::Open(location, location, kVerifyChecksum, &error_msg, &dex_files));
    346 }
    347 
    348 TEST_F(DexFileTest, GetLocationChecksum) {
    349   ScopedObjectAccess soa(Thread::Current());
    350   std::unique_ptr<const DexFile> raw(OpenTestDexFile("Main"));
    351   EXPECT_NE(raw->GetHeader().checksum_, raw->GetLocationChecksum());
    352 }
    353 
    354 TEST_F(DexFileTest, GetChecksum) {
    355   std::vector<uint32_t> checksums;
    356   ScopedObjectAccess soa(Thread::Current());
    357   std::string error_msg;
    358   EXPECT_TRUE(DexFile::GetMultiDexChecksums(GetLibCoreDexFileNames()[0].c_str(), &checksums, &error_msg))
    359       << error_msg;
    360   ASSERT_EQ(1U, checksums.size());
    361   EXPECT_EQ(java_lang_dex_file_->GetLocationChecksum(), checksums[0]);
    362 }
    363 
    364 TEST_F(DexFileTest, GetMultiDexChecksums) {
    365   std::string error_msg;
    366   std::vector<uint32_t> checksums;
    367   std::string multidex_file = GetTestDexFileName("MultiDex");
    368   EXPECT_TRUE(DexFile::GetMultiDexChecksums(multidex_file.c_str(),
    369                                             &checksums,
    370                                             &error_msg)) << error_msg;
    371 
    372   std::vector<std::unique_ptr<const DexFile>> dexes = OpenTestDexFiles("MultiDex");
    373   ASSERT_EQ(2U, dexes.size());
    374   ASSERT_EQ(2U, checksums.size());
    375 
    376   EXPECT_EQ(dexes[0]->GetLocation(), DexFile::GetMultiDexLocation(0, multidex_file.c_str()));
    377   EXPECT_EQ(dexes[0]->GetLocationChecksum(), checksums[0]);
    378 
    379   EXPECT_EQ(dexes[1]->GetLocation(), DexFile::GetMultiDexLocation(1, multidex_file.c_str()));
    380   EXPECT_EQ(dexes[1]->GetLocationChecksum(), checksums[1]);
    381 }
    382 
    383 TEST_F(DexFileTest, ClassDefs) {
    384   ScopedObjectAccess soa(Thread::Current());
    385   std::unique_ptr<const DexFile> raw(OpenTestDexFile("Nested"));
    386   ASSERT_TRUE(raw.get() != nullptr);
    387   EXPECT_EQ(3U, raw->NumClassDefs());
    388 
    389   const DexFile::ClassDef& c0 = raw->GetClassDef(0);
    390   EXPECT_STREQ("LNested$1;", raw->GetClassDescriptor(c0));
    391 
    392   const DexFile::ClassDef& c1 = raw->GetClassDef(1);
    393   EXPECT_STREQ("LNested$Inner;", raw->GetClassDescriptor(c1));
    394 
    395   const DexFile::ClassDef& c2 = raw->GetClassDef(2);
    396   EXPECT_STREQ("LNested;", raw->GetClassDescriptor(c2));
    397 }
    398 
    399 TEST_F(DexFileTest, GetMethodSignature) {
    400   ScopedObjectAccess soa(Thread::Current());
    401   std::unique_ptr<const DexFile> raw(OpenTestDexFile("GetMethodSignature"));
    402   ASSERT_TRUE(raw.get() != nullptr);
    403   EXPECT_EQ(1U, raw->NumClassDefs());
    404 
    405   const DexFile::ClassDef& class_def = raw->GetClassDef(0);
    406   ASSERT_STREQ("LGetMethodSignature;", raw->GetClassDescriptor(class_def));
    407 
    408   const uint8_t* class_data = raw->GetClassData(class_def);
    409   ASSERT_TRUE(class_data != nullptr);
    410   ClassDataItemIterator it(*raw, class_data);
    411 
    412   EXPECT_EQ(1u, it.NumDirectMethods());
    413 
    414   // Check the signature for the static initializer.
    415   {
    416     ASSERT_EQ(1U, it.NumDirectMethods());
    417     const DexFile::MethodId& method_id = raw->GetMethodId(it.GetMemberIndex());
    418     const char* name = raw->StringDataByIdx(method_id.name_idx_);
    419     ASSERT_STREQ("<init>", name);
    420     std::string signature(raw->GetMethodSignature(method_id).ToString());
    421     ASSERT_EQ("()V", signature);
    422   }
    423 
    424   // Check both virtual methods.
    425   ASSERT_EQ(2U, it.NumVirtualMethods());
    426   {
    427     it.Next();
    428     const DexFile::MethodId& method_id = raw->GetMethodId(it.GetMemberIndex());
    429 
    430     const char* name = raw->StringDataByIdx(method_id.name_idx_);
    431     ASSERT_STREQ("m1", name);
    432 
    433     std::string signature(raw->GetMethodSignature(method_id).ToString());
    434     ASSERT_EQ("(IDJLjava/lang/Object;)Ljava/lang/Float;", signature);
    435   }
    436 
    437   {
    438     it.Next();
    439     const DexFile::MethodId& method_id = raw->GetMethodId(it.GetMemberIndex());
    440 
    441     const char* name = raw->StringDataByIdx(method_id.name_idx_);
    442     ASSERT_STREQ("m2", name);
    443 
    444     std::string signature(raw->GetMethodSignature(method_id).ToString());
    445     ASSERT_EQ("(ZSC)LGetMethodSignature;", signature);
    446   }
    447 }
    448 
    449 TEST_F(DexFileTest, FindStringId) {
    450   ScopedObjectAccess soa(Thread::Current());
    451   std::unique_ptr<const DexFile> raw(OpenTestDexFile("GetMethodSignature"));
    452   ASSERT_TRUE(raw.get() != nullptr);
    453   EXPECT_EQ(1U, raw->NumClassDefs());
    454 
    455   const char* strings[] = { "LGetMethodSignature;", "Ljava/lang/Float;", "Ljava/lang/Object;",
    456       "D", "I", "J", nullptr };
    457   for (size_t i = 0; strings[i] != nullptr; i++) {
    458     const char* str = strings[i];
    459     const DexFile::StringId* str_id = raw->FindStringId(str);
    460     const char* dex_str = raw->GetStringData(*str_id);
    461     EXPECT_STREQ(dex_str, str);
    462   }
    463 }
    464 
    465 TEST_F(DexFileTest, FindTypeId) {
    466   for (size_t i = 0; i < java_lang_dex_file_->NumTypeIds(); i++) {
    467     const char* type_str = java_lang_dex_file_->StringByTypeIdx(dex::TypeIndex(i));
    468     const DexFile::StringId* type_str_id = java_lang_dex_file_->FindStringId(type_str);
    469     ASSERT_TRUE(type_str_id != nullptr);
    470     dex::StringIndex type_str_idx = java_lang_dex_file_->GetIndexForStringId(*type_str_id);
    471     const DexFile::TypeId* type_id = java_lang_dex_file_->FindTypeId(type_str_idx);
    472     ASSERT_EQ(type_id, java_lang_dex_file_->FindTypeId(type_str));
    473     ASSERT_TRUE(type_id != nullptr);
    474     EXPECT_EQ(java_lang_dex_file_->GetIndexForTypeId(*type_id).index_, i);
    475   }
    476 }
    477 
    478 TEST_F(DexFileTest, FindProtoId) {
    479   for (size_t i = 0; i < java_lang_dex_file_->NumProtoIds(); i++) {
    480     const DexFile::ProtoId& to_find = java_lang_dex_file_->GetProtoId(i);
    481     const DexFile::TypeList* to_find_tl = java_lang_dex_file_->GetProtoParameters(to_find);
    482     std::vector<dex::TypeIndex> to_find_types;
    483     if (to_find_tl != nullptr) {
    484       for (size_t j = 0; j < to_find_tl->Size(); j++) {
    485         to_find_types.push_back(to_find_tl->GetTypeItem(j).type_idx_);
    486       }
    487     }
    488     const DexFile::ProtoId* found =
    489         java_lang_dex_file_->FindProtoId(to_find.return_type_idx_, to_find_types);
    490     ASSERT_TRUE(found != nullptr);
    491     EXPECT_EQ(java_lang_dex_file_->GetIndexForProtoId(*found), i);
    492   }
    493 }
    494 
    495 TEST_F(DexFileTest, FindMethodId) {
    496   for (size_t i = 0; i < java_lang_dex_file_->NumMethodIds(); i++) {
    497     const DexFile::MethodId& to_find = java_lang_dex_file_->GetMethodId(i);
    498     const DexFile::TypeId& klass = java_lang_dex_file_->GetTypeId(to_find.class_idx_);
    499     const DexFile::StringId& name = java_lang_dex_file_->GetStringId(to_find.name_idx_);
    500     const DexFile::ProtoId& signature = java_lang_dex_file_->GetProtoId(to_find.proto_idx_);
    501     const DexFile::MethodId* found = java_lang_dex_file_->FindMethodId(klass, name, signature);
    502     ASSERT_TRUE(found != nullptr) << "Didn't find method " << i << ": "
    503         << java_lang_dex_file_->StringByTypeIdx(to_find.class_idx_) << "."
    504         << java_lang_dex_file_->GetStringData(name)
    505         << java_lang_dex_file_->GetMethodSignature(to_find);
    506     EXPECT_EQ(java_lang_dex_file_->GetIndexForMethodId(*found), i);
    507   }
    508 }
    509 
    510 TEST_F(DexFileTest, FindFieldId) {
    511   for (size_t i = 0; i < java_lang_dex_file_->NumFieldIds(); i++) {
    512     const DexFile::FieldId& to_find = java_lang_dex_file_->GetFieldId(i);
    513     const DexFile::TypeId& klass = java_lang_dex_file_->GetTypeId(to_find.class_idx_);
    514     const DexFile::StringId& name = java_lang_dex_file_->GetStringId(to_find.name_idx_);
    515     const DexFile::TypeId& type = java_lang_dex_file_->GetTypeId(to_find.type_idx_);
    516     const DexFile::FieldId* found = java_lang_dex_file_->FindFieldId(klass, name, type);
    517     ASSERT_TRUE(found != nullptr) << "Didn't find field " << i << ": "
    518         << java_lang_dex_file_->StringByTypeIdx(to_find.type_idx_) << " "
    519         << java_lang_dex_file_->StringByTypeIdx(to_find.class_idx_) << "."
    520         << java_lang_dex_file_->GetStringData(name);
    521     EXPECT_EQ(java_lang_dex_file_->GetIndexForFieldId(*found), i);
    522   }
    523 }
    524 
    525 TEST_F(DexFileTest, GetMultiDexClassesDexName) {
    526   ASSERT_EQ("classes.dex", DexFile::GetMultiDexClassesDexName(0));
    527   ASSERT_EQ("classes2.dex", DexFile::GetMultiDexClassesDexName(1));
    528   ASSERT_EQ("classes3.dex", DexFile::GetMultiDexClassesDexName(2));
    529   ASSERT_EQ("classes100.dex", DexFile::GetMultiDexClassesDexName(99));
    530 }
    531 
    532 TEST_F(DexFileTest, GetMultiDexLocation) {
    533   std::string dex_location_str = "/system/app/framework.jar";
    534   const char* dex_location = dex_location_str.c_str();
    535   ASSERT_EQ("/system/app/framework.jar", DexFile::GetMultiDexLocation(0, dex_location));
    536   ASSERT_EQ("/system/app/framework.jar:classes2.dex",
    537             DexFile::GetMultiDexLocation(1, dex_location));
    538   ASSERT_EQ("/system/app/framework.jar:classes101.dex",
    539             DexFile::GetMultiDexLocation(100, dex_location));
    540 }
    541 
    542 TEST_F(DexFileTest, GetDexCanonicalLocation) {
    543   ScratchFile file;
    544   UniqueCPtr<const char[]> dex_location_real(realpath(file.GetFilename().c_str(), nullptr));
    545   std::string dex_location(dex_location_real.get());
    546 
    547   ASSERT_EQ(dex_location, DexFile::GetDexCanonicalLocation(dex_location.c_str()));
    548   std::string multidex_location = DexFile::GetMultiDexLocation(1, dex_location.c_str());
    549   ASSERT_EQ(multidex_location, DexFile::GetDexCanonicalLocation(multidex_location.c_str()));
    550 
    551   std::string dex_location_sym = dex_location + "symlink";
    552   ASSERT_EQ(0, symlink(dex_location.c_str(), dex_location_sym.c_str()));
    553 
    554   ASSERT_EQ(dex_location, DexFile::GetDexCanonicalLocation(dex_location_sym.c_str()));
    555 
    556   std::string multidex_location_sym = DexFile::GetMultiDexLocation(1, dex_location_sym.c_str());
    557   ASSERT_EQ(multidex_location, DexFile::GetDexCanonicalLocation(multidex_location_sym.c_str()));
    558 
    559   ASSERT_EQ(0, unlink(dex_location_sym.c_str()));
    560 }
    561 
    562 TEST(DexFileUtilsTest, GetBaseLocationAndMultiDexSuffix) {
    563   EXPECT_EQ("/foo/bar/baz.jar", DexFile::GetBaseLocation("/foo/bar/baz.jar"));
    564   EXPECT_EQ("/foo/bar/baz.jar", DexFile::GetBaseLocation("/foo/bar/baz.jar:classes2.dex"));
    565   EXPECT_EQ("/foo/bar/baz.jar", DexFile::GetBaseLocation("/foo/bar/baz.jar:classes8.dex"));
    566   EXPECT_EQ("", DexFile::GetMultiDexSuffix("/foo/bar/baz.jar"));
    567   EXPECT_EQ(":classes2.dex", DexFile::GetMultiDexSuffix("/foo/bar/baz.jar:classes2.dex"));
    568   EXPECT_EQ(":classes8.dex", DexFile::GetMultiDexSuffix("/foo/bar/baz.jar:classes8.dex"));
    569 }
    570 
    571 TEST_F(DexFileTest, ZipOpenClassesPresent) {
    572   ScratchFile tmp;
    573   std::vector<std::unique_ptr<const DexFile>> dex_files;
    574   std::string error_msg;
    575   ASSERT_TRUE(OpenDexFilesBase64(kRawZipClassesDexPresent, tmp.GetFilename().c_str(), &dex_files,
    576                                  &error_msg));
    577   EXPECT_EQ(dex_files.size(), 1u);
    578 }
    579 
    580 TEST_F(DexFileTest, ZipOpenClassesAbsent) {
    581   ScratchFile tmp;
    582   std::vector<std::unique_ptr<const DexFile>> dex_files;
    583   std::string error_msg;
    584   ASSERT_FALSE(OpenDexFilesBase64(kRawZipClassesDexAbsent, tmp.GetFilename().c_str(), &dex_files,
    585                                   &error_msg));
    586   EXPECT_EQ(dex_files.size(), 0u);
    587 }
    588 
    589 TEST_F(DexFileTest, ZipOpenThreeDexFiles) {
    590   ScratchFile tmp;
    591   std::vector<std::unique_ptr<const DexFile>> dex_files;
    592   std::string error_msg;
    593   ASSERT_TRUE(OpenDexFilesBase64(kRawZipThreeDexFiles, tmp.GetFilename().c_str(), &dex_files,
    594                                  &error_msg));
    595   EXPECT_EQ(dex_files.size(), 3u);
    596 }
    597 
    598 TEST_F(DexFileTest, OpenDexBadMapOffset) {
    599   ScratchFile tmp;
    600   std::unique_ptr<const DexFile> raw =
    601       OpenDexFileInMemoryBase64(kRawDexBadMapOffset, tmp.GetFilename().c_str(), 0xb3642819U, false);
    602   EXPECT_EQ(raw, nullptr);
    603 }
    604 
    605 TEST_F(DexFileTest, GetStringWithNoIndex) {
    606   ScratchFile tmp;
    607   std::unique_ptr<const DexFile> raw(OpenDexFileBase64(kRawDex, tmp.GetFilename().c_str()));
    608   dex::TypeIndex idx;
    609   EXPECT_EQ(raw->StringByTypeIdx(idx), nullptr);
    610 }
    611 
    612 static void Callback(void* context ATTRIBUTE_UNUSED,
    613                      const DexFile::LocalInfo& entry ATTRIBUTE_UNUSED) {
    614 }
    615 
    616 TEST_F(DexFileTest, OpenDexDebugInfoLocalNullType) {
    617   ScratchFile tmp;
    618   std::unique_ptr<const DexFile> raw = OpenDexFileInMemoryBase64(
    619       kRawDexDebugInfoLocalNullType, tmp.GetFilename().c_str(), 0xf25f2b38U, true);
    620   const DexFile::ClassDef& class_def = raw->GetClassDef(0);
    621   const DexFile::CodeItem* code_item = raw->GetCodeItem(raw->FindCodeItemOffset(class_def, 1));
    622   ASSERT_TRUE(raw->DecodeDebugLocalInfo(code_item, true, 1, Callback, nullptr));
    623 }
    624 
    625 }  // namespace art
    626