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Add native support for serializing char arrays without FLATDATA

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Support is added to serialize arrays of type char or unsigned char directly,
without any wrappers. All invocations of the FLATDATA wrappers that are
obsoleted by this are removed.

This includes a patch by Russell Yanofsky to make char casting type safe.

The serialization of CSubNet is changed to serialize a bool directly rather
than though FLATDATA. This makes the serialization independent of the size
of the bool type (and will use 1 byte everywhere).
This commit is contained in:
Pieter Wuille 2018-03-20 17:37:32 -07:00
parent 4ba3d4f439
commit a7c45bce92
8 changed files with 40 additions and 26 deletions
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6
src/addrdb.cpp
View file

@ -22,8 +22,8 @@ bool SerializeDB(Stream& stream, const Data& data)
// Write and commit header, data
try {
CHashWriter hasher(SER_DISK, CLIENT_VERSION);
stream << FLATDATA(Params().MessageStart()) << data;
hasher << FLATDATA(Params().MessageStart()) << data;
stream << Params().MessageStart() << data;
hasher << Params().MessageStart() << data;
stream << hasher.GetHash();
} catch (const std::exception& e) {
return error("%s: Serialize or I/O error - %s", __func__, e.what());
@ -66,7 +66,7 @@ bool DeserializeDB(Stream& stream, Data& data, bool fCheckSum = true)
CHashVerifier<Stream> verifier(&stream);
// de-serialize file header (network specific magic number) and ..
unsigned char pchMsgTmp[4];
verifier >> FLATDATA(pchMsgTmp);
verifier >> pchMsgTmp;
// ... verify the network matches ours
if (memcmp(pchMsgTmp, Params().MessageStart(), sizeof(pchMsgTmp)))
return error("%s: Invalid network magic number", __func__);

8
src/netaddress.h
View file

@ -93,7 +93,7 @@ class CNetAddr
template <typename Stream, typename Operation>
inline void SerializationOp(Stream& s, Operation ser_action) {
READWRITE(FLATDATA(ip));
READWRITE(ip);
}
friend class CSubNet;
@ -131,8 +131,8 @@ class CSubNet
template <typename Stream, typename Operation>
inline void SerializationOp(Stream& s, Operation ser_action) {
READWRITE(network);
READWRITE(FLATDATA(netmask));
READWRITE(FLATDATA(valid));
READWRITE(netmask);
READWRITE(valid);
}
};
@ -166,7 +166,7 @@ class CService : public CNetAddr
template <typename Stream, typename Operation>
inline void SerializationOp(Stream& s, Operation ser_action) {
READWRITE(FLATDATA(ip));
READWRITE(ip);
unsigned short portN = htons(port);
READWRITE(FLATDATA(portN));
if (ser_action.ForRead())

6
src/protocol.h
View file

@ -48,10 +48,10 @@ public:
template <typename Stream, typename Operation>
inline void SerializationOp(Stream& s, Operation ser_action)
{
READWRITE(FLATDATA(pchMessageStart));
READWRITE(FLATDATA(pchCommand));
READWRITE(pchMessageStart);
READWRITE(pchCommand);
READWRITE(nMessageSize);
READWRITE(FLATDATA(pchChecksum));
READWRITE(pchChecksum);
}
char pchMessageStart[MESSAGE_START_SIZE];

10
src/serialize.h
View file

@ -59,6 +59,12 @@ inline T* NCONST_PTR(const T* val)
return const_cast<T*>(val);
}
//! Safely convert odd char pointer types to standard ones.
inline char* CharCast(char* c) { return c; }
inline char* CharCast(unsigned char* c) { return (char*)c; }
inline const char* CharCast(const char* c) { return c; }
inline const char* CharCast(const unsigned char* c) { return (const char*)c; }
/*
* Lowest-level serialization and conversion.
* @note Sizes of these types are verified in the tests
@ -177,6 +183,8 @@ template<typename Stream> inline void Serialize(Stream& s, int64_t a ) { ser_wri
template<typename Stream> inline void Serialize(Stream& s, uint64_t a) { ser_writedata64(s, a); }
template<typename Stream> inline void Serialize(Stream& s, float a ) { ser_writedata32(s, ser_float_to_uint32(a)); }
template<typename Stream> inline void Serialize(Stream& s, double a ) { ser_writedata64(s, ser_double_to_uint64(a)); }
template<typename Stream, int N> inline void Serialize(Stream& s, const char (&a)[N]) { s.write(a, N); }
template<typename Stream, int N> inline void Serialize(Stream& s, const unsigned char (&a)[N]) { s.write(CharCast(a), N); }
template<typename Stream> inline void Unserialize(Stream& s, char& a ) { a = ser_readdata8(s); } // TODO Get rid of bare char
template<typename Stream> inline void Unserialize(Stream& s, int8_t& a ) { a = ser_readdata8(s); }
@ -189,6 +197,8 @@ template<typename Stream> inline void Unserialize(Stream& s, int64_t& a ) { a =
template<typename Stream> inline void Unserialize(Stream& s, uint64_t& a) { a = ser_readdata64(s); }
template<typename Stream> inline void Unserialize(Stream& s, float& a ) { a = ser_uint32_to_float(ser_readdata32(s)); }
template<typename Stream> inline void Unserialize(Stream& s, double& a ) { a = ser_uint64_to_double(ser_readdata64(s)); }
template<typename Stream, int N> inline void Unserialize(Stream& s, char (&a)[N]) { s.read(a, N); }
template<typename Stream, int N> inline void Unserialize(Stream& s, unsigned char (&a)[N]) { s.read(CharCast(a), N); }
template<typename Stream> inline void Serialize(Stream& s, bool a) { char f=a; ser_writedata8(s, f); }
template<typename Stream> inline void Unserialize(Stream& s, bool& a) { char f=ser_readdata8(s); a=f; }

6
src/test/net_tests.cpp
View file

@ -64,7 +64,7 @@ public:
CDataStream AddrmanToStream(CAddrManSerializationMock& _addrman)
{
CDataStream ssPeersIn(SER_DISK, CLIENT_VERSION);
ssPeersIn << FLATDATA(Params().MessageStart());
ssPeersIn << Params().MessageStart();
ssPeersIn << _addrman;
std::string str = ssPeersIn.str();
std::vector<unsigned char> vchData(str.begin(), str.end());
@ -110,7 +110,7 @@ BOOST_AUTO_TEST_CASE(caddrdb_read)
BOOST_CHECK(addrman1.size() == 0);
try {
unsigned char pchMsgTmp[4];
ssPeers1 >> FLATDATA(pchMsgTmp);
ssPeers1 >> pchMsgTmp;
ssPeers1 >> addrman1;
} catch (const std::exception& e) {
exceptionThrown = true;
@ -142,7 +142,7 @@ BOOST_AUTO_TEST_CASE(caddrdb_read_corrupted)
BOOST_CHECK(addrman1.size() == 0);
try {
unsigned char pchMsgTmp[4];
ssPeers1 >> FLATDATA(pchMsgTmp);
ssPeers1 >> pchMsgTmp;
ssPeers1 >> addrman1;
} catch (const std::exception& e) {
exceptionThrown = true;

16
src/test/serialize_tests.cpp
View file

@ -19,11 +19,15 @@ protected:
int intval;
bool boolval;
std::string stringval;
const char* charstrval;
char charstrval[16];
CTransactionRef txval;
public:
CSerializeMethodsTestSingle() = default;
CSerializeMethodsTestSingle(int intvalin, bool boolvalin, std::string stringvalin, const char* charstrvalin, CTransaction txvalin) : intval(intvalin), boolval(boolvalin), stringval(std::move(stringvalin)), charstrval(charstrvalin), txval(MakeTransactionRef(txvalin)){}
CSerializeMethodsTestSingle(int intvalin, bool boolvalin, std::string stringvalin, const char* charstrvalin, CTransaction txvalin) : intval(intvalin), boolval(boolvalin), stringval(std::move(stringvalin)), txval(MakeTransactionRef(txvalin))
{
memcpy(charstrval, charstrvalin, sizeof(charstrval));
}
ADD_SERIALIZE_METHODS;
template <typename Stream, typename Operation>
@ -31,7 +35,7 @@ public:
READWRITE(intval);
READWRITE(boolval);
READWRITE(stringval);
READWRITE(FLATDATA(charstrval));
READWRITE(charstrval);
READWRITE(txval);
}
@ -53,7 +57,7 @@ public:
template <typename Stream, typename Operation>
inline void SerializationOp(Stream& s, Operation ser_action) {
READWRITE(intval, boolval, stringval, FLATDATA(charstrval), txval);
READWRITE(intval, boolval, stringval, charstrval, txval);
}
};
@ -344,7 +348,7 @@ BOOST_AUTO_TEST_CASE(class_methods)
int intval(100);
bool boolval(true);
std::string stringval("testing");
const char* charstrval("testing charstr");
const char charstrval[16] = "testing charstr";
CMutableTransaction txval;
CSerializeMethodsTestSingle methodtest1(intval, boolval, stringval, charstrval, txval);
CSerializeMethodsTestMany methodtest2(intval, boolval, stringval, charstrval, txval);
@ -360,7 +364,7 @@ BOOST_AUTO_TEST_CASE(class_methods)
BOOST_CHECK(methodtest2 == methodtest3);
BOOST_CHECK(methodtest3 == methodtest4);
CDataStream ss2(SER_DISK, PROTOCOL_VERSION, intval, boolval, stringval, FLATDATA(charstrval), txval);
CDataStream ss2(SER_DISK, PROTOCOL_VERSION, intval, boolval, stringval, charstrval, txval);
ss2 >> methodtest3;
BOOST_CHECK(methodtest3 == methodtest4);
}

8
src/test/streams_tests.cpp
View file

@ -57,16 +57,16 @@ BOOST_AUTO_TEST_CASE(streams_vector_writer)
BOOST_CHECK((vch == std::vector<unsigned char>{{0, 0, 0, 0, 1, 2}}));
vch.clear();
CVectorWriter(SER_NETWORK, INIT_PROTO_VERSION, vch, 0, FLATDATA(bytes));
CVectorWriter(SER_NETWORK, INIT_PROTO_VERSION, vch, 0, bytes);
BOOST_CHECK((vch == std::vector<unsigned char>{{3, 4, 5, 6}}));
CVectorWriter(SER_NETWORK, INIT_PROTO_VERSION, vch, 0, FLATDATA(bytes));
CVectorWriter(SER_NETWORK, INIT_PROTO_VERSION, vch, 0, bytes);
BOOST_CHECK((vch == std::vector<unsigned char>{{3, 4, 5, 6}}));
vch.clear();
vch.resize(4, 8);
CVectorWriter(SER_NETWORK, INIT_PROTO_VERSION, vch, 2, a, FLATDATA(bytes), b);
CVectorWriter(SER_NETWORK, INIT_PROTO_VERSION, vch, 2, a, bytes, b);
BOOST_CHECK((vch == std::vector<unsigned char>{{8, 8, 1, 3, 4, 5, 6, 2}}));
CVectorWriter(SER_NETWORK, INIT_PROTO_VERSION, vch, 2, a, FLATDATA(bytes), b);
CVectorWriter(SER_NETWORK, INIT_PROTO_VERSION, vch, 2, a, bytes, b);
BOOST_CHECK((vch == std::vector<unsigned char>{{8, 8, 1, 3, 4, 5, 6, 2}}));
vch.clear();
}

6
src/validation.cpp
View file

@ -1077,7 +1077,7 @@ static bool WriteBlockToDisk(const CBlock& block, CDiskBlockPos& pos, const CMes
// Write index header
unsigned int nSize = GetSerializeSize(fileout, block);
fileout << FLATDATA(messageStart) << nSize;
fileout << messageStart << nSize;
// Write block
long fileOutPos = ftell(fileout.Get());
@ -1441,7 +1441,7 @@ bool UndoWriteToDisk(const CBlockUndo& blockundo, CDiskBlockPos& pos, const uint
// Write index header
unsigned int nSize = GetSerializeSize(fileout, blockundo);
fileout << FLATDATA(messageStart) << nSize;
fileout << messageStart << nSize;
// Write undo data
long fileOutPos = ftell(fileout.Get());
@ -4283,7 +4283,7 @@ bool LoadExternalBlockFile(const CChainParams& chainparams, FILE* fileIn, CDiskB
unsigned char buf[CMessageHeader::MESSAGE_START_SIZE];
blkdat.FindByte(chainparams.MessageStart()[0]);
nRewind = blkdat.GetPos()+1;
blkdat >> FLATDATA(buf);
blkdat >> buf;
if (memcmp(buf, chainparams.MessageStart(), CMessageHeader::MESSAGE_START_SIZE))
continue;
// read size