Merge branch '1.14-branding'

1 files changed, 323 insertions, 0 deletions

diff --git a/src/test/dbwrapper_tests.cpp b/src/test/dbwrapper_tests.cpp
new file mode 100644
index 000000000..d5d158027
--- /dev/null
+++ b/src/test/dbwrapper_tests.cpp
@@ -0,0 +1,323 @@
+// Copyright (c) 2012-2016 The Bitcoin Core developers
+// Distributed under the MIT software license, see the accompanying
+// file COPYING or http://www.opensource.org/licenses/mit-license.php.
+
+#include "dbwrapper.h"
+#include "uint256.h"
+#include "random.h"
+#include "test/test_bitcoin.h"
+
+#include <boost/assign/std/vector.hpp> // for 'operator+=()'
+#include <boost/assert.hpp>
+#include <boost/test/unit_test.hpp>
+
+// Test if a string consists entirely of null characters
+bool is_null_key(const std::vector<unsigned char>& key) {
+    bool isnull = true;
+
+    for (unsigned int i = 0; i < key.size(); i++)
+        isnull &= (key[i] == '\x00');
+
+    return isnull;
+}
+ 
+BOOST_FIXTURE_TEST_SUITE(dbwrapper_tests, BasicTestingSetup)
+                       
+BOOST_AUTO_TEST_CASE(dbwrapper)
+{
+    // Perform tests both obfuscated and non-obfuscated.
+    for (int i = 0; i < 2; i++) {
+        bool obfuscate = (bool)i;
+        boost::filesystem::path ph = boost::filesystem::temp_directory_path() / boost::filesystem::unique_path();
+        CDBWrapper dbw(ph, (1 << 20), true, false, obfuscate);
+        char key = 'k';
+        uint256 in = GetRandHash();
+        uint256 res;
+
+        // Ensure that we're doing real obfuscation when obfuscate=true
+        BOOST_CHECK(obfuscate != is_null_key(dbwrapper_private::GetObfuscateKey(dbw)));
+
+        BOOST_CHECK(dbw.Write(key, in));
+        BOOST_CHECK(dbw.Read(key, res));
+        BOOST_CHECK_EQUAL(res.ToString(), in.ToString());
+    }
+}
+
+// Test batch operations
+BOOST_AUTO_TEST_CASE(dbwrapper_batch)
+{
+    // Perform tests both obfuscated and non-obfuscated.
+    for (int i = 0; i < 2; i++) {
+        bool obfuscate = (bool)i;
+        boost::filesystem::path ph = boost::filesystem::temp_directory_path() / boost::filesystem::unique_path();
+        CDBWrapper dbw(ph, (1 << 20), true, false, obfuscate);
+
+        char key = 'i';
+        uint256 in = GetRandHash();
+        char key2 = 'j';
+        uint256 in2 = GetRandHash();
+        char key3 = 'k';
+        uint256 in3 = GetRandHash();
+
+        uint256 res;
+        CDBBatch batch(dbw);
+
+        batch.Write(key, in);
+        batch.Write(key2, in2);
+        batch.Write(key3, in3);
+
+        // Remove key3 before it's even been written
+        batch.Erase(key3);
+
+        dbw.WriteBatch(batch);
+
+        BOOST_CHECK(dbw.Read(key, res));
+        BOOST_CHECK_EQUAL(res.ToString(), in.ToString());
+        BOOST_CHECK(dbw.Read(key2, res));
+        BOOST_CHECK_EQUAL(res.ToString(), in2.ToString());
+
+        // key3 should've never been written
+        BOOST_CHECK(dbw.Read(key3, res) == false);
+    }
+}
+
+BOOST_AUTO_TEST_CASE(dbwrapper_iterator)
+{
+    // Perform tests both obfuscated and non-obfuscated.
+    for (int i = 0; i < 2; i++) {
+        bool obfuscate = (bool)i;
+        boost::filesystem::path ph = boost::filesystem::temp_directory_path() / boost::filesystem::unique_path();
+        CDBWrapper dbw(ph, (1 << 20), true, false, obfuscate);
+
+        // The two keys are intentionally chosen for ordering
+        char key = 'j';
+        uint256 in = GetRandHash();
+        BOOST_CHECK(dbw.Write(key, in));
+        char key2 = 'k';
+        uint256 in2 = GetRandHash();
+        BOOST_CHECK(dbw.Write(key2, in2));
+
+        std::unique_ptr<CDBIterator> it(const_cast<CDBWrapper*>(&dbw)->NewIterator());
+
+        // Be sure to seek past the obfuscation key (if it exists)
+        it->Seek(key);
+
+        char key_res;
+        uint256 val_res;
+
+        it->GetKey(key_res);
+        it->GetValue(val_res);
+        BOOST_CHECK_EQUAL(key_res, key);
+        BOOST_CHECK_EQUAL(val_res.ToString(), in.ToString());
+
+        it->Next();
+
+        it->GetKey(key_res);
+        it->GetValue(val_res);
+        BOOST_CHECK_EQUAL(key_res, key2);
+        BOOST_CHECK_EQUAL(val_res.ToString(), in2.ToString());
+
+        it->Next();
+        BOOST_CHECK_EQUAL(it->Valid(), false);
+    }
+}
+
+// Test that we do not obfuscation if there is existing data.
+BOOST_AUTO_TEST_CASE(existing_data_no_obfuscate)
+{
+    // We're going to share this boost::filesystem::path between two wrappers
+    boost::filesystem::path ph = boost::filesystem::temp_directory_path() / boost::filesystem::unique_path();
+    create_directories(ph);
+
+    // Set up a non-obfuscated wrapper to write some initial data.
+    CDBWrapper* dbw = new CDBWrapper(ph, (1 << 10), false, false, false);
+    char key = 'k';
+    uint256 in = GetRandHash();
+    uint256 res;
+
+    BOOST_CHECK(dbw->Write(key, in));
+    BOOST_CHECK(dbw->Read(key, res));
+    BOOST_CHECK_EQUAL(res.ToString(), in.ToString());
+
+    // Call the destructor to free leveldb LOCK
+    delete dbw;
+
+    // Now, set up another wrapper that wants to obfuscate the same directory
+    CDBWrapper odbw(ph, (1 << 10), false, false, true);
+
+    // Check that the key/val we wrote with unobfuscated wrapper exists and 
+    // is readable.
+    uint256 res2;
+    BOOST_CHECK(odbw.Read(key, res2));
+    BOOST_CHECK_EQUAL(res2.ToString(), in.ToString());
+
+    BOOST_CHECK(!odbw.IsEmpty()); // There should be existing data
+    BOOST_CHECK(is_null_key(dbwrapper_private::GetObfuscateKey(odbw))); // The key should be an empty string
+
+    uint256 in2 = GetRandHash();
+    uint256 res3;
+ 
+    // Check that we can write successfully
+    BOOST_CHECK(odbw.Write(key, in2));
+    BOOST_CHECK(odbw.Read(key, res3));
+    BOOST_CHECK_EQUAL(res3.ToString(), in2.ToString());
+}
+                        
+// Ensure that we start obfuscating during a reindex.
+BOOST_AUTO_TEST_CASE(existing_data_reindex)
+{
+    // We're going to share this boost::filesystem::path between two wrappers
+    boost::filesystem::path ph = boost::filesystem::temp_directory_path() / boost::filesystem::unique_path();
+    create_directories(ph);
+
+    // Set up a non-obfuscated wrapper to write some initial data.
+    CDBWrapper* dbw = new CDBWrapper(ph, (1 << 10), false, false, false);
+    char key = 'k';
+    uint256 in = GetRandHash();
+    uint256 res;
+
+    BOOST_CHECK(dbw->Write(key, in));
+    BOOST_CHECK(dbw->Read(key, res));
+    BOOST_CHECK_EQUAL(res.ToString(), in.ToString());
+
+    // Call the destructor to free leveldb LOCK
+    delete dbw;
+
+    // Simulate a -reindex by wiping the existing data store
+    CDBWrapper odbw(ph, (1 << 10), false, true, true);
+
+    // Check that the key/val we wrote with unobfuscated wrapper doesn't exist
+    uint256 res2;
+    BOOST_CHECK(!odbw.Read(key, res2));
+    BOOST_CHECK(!is_null_key(dbwrapper_private::GetObfuscateKey(odbw)));
+
+    uint256 in2 = GetRandHash();
+    uint256 res3;
+ 
+    // Check that we can write successfully
+    BOOST_CHECK(odbw.Write(key, in2));
+    BOOST_CHECK(odbw.Read(key, res3));
+    BOOST_CHECK_EQUAL(res3.ToString(), in2.ToString());
+}
+
+BOOST_AUTO_TEST_CASE(iterator_ordering)
+{
+    boost::filesystem::path ph = boost::filesystem::temp_directory_path() / boost::filesystem::unique_path();
+    CDBWrapper dbw(ph, (1 << 20), true, false, false);
+    for (int x=0x00; x<256; ++x) {
+        uint8_t key = x;
+        uint32_t value = x*x;
+        BOOST_CHECK(dbw.Write(key, value));
+    }
+
+    std::unique_ptr<CDBIterator> it(const_cast<CDBWrapper*>(&dbw)->NewIterator());
+    for (int c=0; c<2; ++c) {
+        int seek_start;
+        if (c == 0)
+            seek_start = 0x00;
+        else
+            seek_start = 0x80;
+        it->Seek((uint8_t)seek_start);
+        for (int x=seek_start; x<256; ++x) {
+            uint8_t key;
+            uint32_t value;
+            BOOST_CHECK(it->Valid());
+            if (!it->Valid()) // Avoid spurious errors about invalid iterator's key and value in case of failure
+                break;
+            BOOST_CHECK(it->GetKey(key));
+            BOOST_CHECK(it->GetValue(value));
+            BOOST_CHECK_EQUAL(key, x);
+            BOOST_CHECK_EQUAL(value, x*x);
+            it->Next();
+        }
+        BOOST_CHECK(!it->Valid());
+    }
+}
+
+struct StringContentsSerializer {
+    // Used to make two serialized objects the same while letting them have a different lengths
+    // This is a terrible idea
+    std::string str;
+    StringContentsSerializer() {}
+    StringContentsSerializer(const std::string& inp) : str(inp) {}
+
+    StringContentsSerializer& operator+=(const std::string& s) {
+        str += s;
+        return *this;
+    }
+    StringContentsSerializer& operator+=(const StringContentsSerializer& s) { return *this += s.str; }
+
+    ADD_SERIALIZE_METHODS;
+
+    template <typename Stream, typename Operation>
+    inline void SerializationOp(Stream& s, Operation ser_action) {
+        if (ser_action.ForRead()) {
+            str.clear();
+            char c = 0;
+            while (true) {
+                try {
+                    READWRITE(c);
+                    str.push_back(c);
+                } catch (const std::ios_base::failure& e) {
+                    break;
+                }
+            }
+        } else {
+            for (size_t i = 0; i < str.size(); i++)
+                READWRITE(str[i]);
+        }
+    }
+};
+
+BOOST_AUTO_TEST_CASE(iterator_string_ordering)
+{
+    char buf[10];
+
+    boost::filesystem::path ph = boost::filesystem::temp_directory_path() / boost::filesystem::unique_path();
+    CDBWrapper dbw(ph, (1 << 20), true, false, false);
+    for (int x=0x00; x<10; ++x) {
+        for (int y = 0; y < 10; y++) {
+            sprintf(buf, "%d", x);
+            StringContentsSerializer key(buf);
+            for (int z = 0; z < y; z++)
+                key += key;
+            uint32_t value = x*x;
+            BOOST_CHECK(dbw.Write(key, value));
+        }
+    }
+
+    std::unique_ptr<CDBIterator> it(const_cast<CDBWrapper*>(&dbw)->NewIterator());
+    for (int c=0; c<2; ++c) {
+        int seek_start;
+        if (c == 0)
+            seek_start = 0;
+        else
+            seek_start = 5;
+        sprintf(buf, "%d", seek_start);
+        StringContentsSerializer seek_key(buf);
+        it->Seek(seek_key);
+        for (int x=seek_start; x<10; ++x) {
+            for (int y = 0; y < 10; y++) {
+                sprintf(buf, "%d", x);
+                std::string exp_key(buf);
+                for (int z = 0; z < y; z++)
+                    exp_key += exp_key;
+                StringContentsSerializer key;
+                uint32_t value;
+                BOOST_CHECK(it->Valid());
+                if (!it->Valid()) // Avoid spurious errors about invalid iterator's key and value in case of failure
+                    break;
+                BOOST_CHECK(it->GetKey(key));
+                BOOST_CHECK(it->GetValue(value));
+                BOOST_CHECK_EQUAL(key.str, exp_key);
+                BOOST_CHECK_EQUAL(value, x*x);
+                it->Next();
+            }
+        }
+        BOOST_CHECK(!it->Valid());
+    }
+}
+
+
+
+BOOST_AUTO_TEST_SUITE_END()