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parser.cpp
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parser.cpp
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#include <util.h>
#include <timer.h>
#include <common.h>
#include <errlog.h>
#include <callback.h>
#include <string>
#include <vector>
#include <fcntl.h>
#include <malloc.h>
#include <stdlib.h>
#include <sys/stat.h>
#include <sys/types.h>
#if !defined(S_ISDIR)
#define S_ISDIR(mode) (S_IFDIR==((mode) & S_IFMT))
#endif
typedef GoogMap<
Hash256,
Chunk*,
Hash256Hasher,
Hash256Equal
>::Map TXOMap;
typedef GoogMap<
Hash256,
Block*,
Hash256Hasher,
Hash256Equal
>::Map BlockMap;
static bool gNeedUpstream;
static Callback *gCallback;
static const BlockFile *gCurBlockFile;
static std::vector<BlockFile> blockFiles;
static TXOMap gTXOMap;
static BlockMap gBlockMap;
static uint8_t empty[kSHA256ByteSize] = { 0x42 };
static Block *gMaxBlock;
static Block *gNullBlock;
static int64_t gMaxHeight;
static uint64_t gChainSize;
static uint256_t gNullHash;
static double getMem() {
#if defined(linux)
char statFileName[256];
sprintf(
statFileName,
"/proc/%d/statm",
(int)getpid()
);
uint64_t mem = 0;
FILE *f = fopen(statFileName, "r");
if(1!=fscanf(f, "%" PRIu64, &mem)) {
warning("coudln't read process size");
}
fclose(f);
return (1e-9f*mem)*getpagesize();
#elif defined(_WIN64)
return 0; // TODO
#else
return 0; // TODO
#endif
}
#if defined BITCOIN
static const size_t gHeaderSize = 80;
static auto kCoinDirName = ".bitcoin";
static const uint32_t gExpectedMagic = 0xd9b4bef9;
#endif
#if defined TESTNET3
static const size_t gHeaderSize = 80;
static auto kCoinDirName = ".bitcoin/testnet3";
static const uint32_t gExpectedMagic = 0x0709110b;
#endif
#if defined LITECOIN
static const size_t gHeaderSize = 80;
static auto kCoinDirName = ".litecoin";
static const uint32_t gExpectedMagic = 0xdbb6c0fb;
#endif
#if defined DARKCOIN
static const size_t gHeaderSize = 80;
static auto kCoinDirName = ".darkcoin";
static const uint32_t gExpectedMagic = 0xbd6b0cbf;
#endif
#if defined PROTOSHARES
static const size_t gHeaderSize = 88;
static auto kCoinDirName = ".protoshares";
static const uint32_t gExpectedMagic = 0xd9b5bdf9;
#endif
#if defined FEDORACOIN
static const size_t gHeaderSize = 80;
static auto kCoinDirName = ".fedoracoin";
static const uint32_t gExpectedMagic = 0xdead1337;
#endif
#if defined PEERCOIN
static const size_t gHeaderSize = 80;
static auto kCoinDirName = ".ppcoin";
static const uint32_t gExpectedMagic = 0xe5e9e8e6;
#endif
#if defined CLAM
static const size_t gHeaderSize = 80;
static auto kCoinDirName = ".clam";
static const uint32_t gExpectedMagic = 0x15352203;
#endif
#if defined PAYCON
static const size_t gHeaderSize = 80;
static auto kCoinDirName = ".PayCon";
static const uint32_t gExpectedMagic = 0x2d3b3c4b;
#endif
#if defined JUMBUCKS
static const size_t gHeaderSize = 80;
static auto kCoinDirName = ".coinmarketscoin";
static const uint32_t gExpectedMagic = 0xb6f1f4fc;
#endif
#if defined MYRIADCOIN
static const size_t gHeaderSize = 80;
static auto kCoinDirName = ".myriadcoin";
static const uint32_t gExpectedMagic = 0xee7645af;
#endif
#if defined UNOBTANIUM
static const size_t gHeaderSize = 80;
static auto kCoinDirName = ".unobtanium";
static const uint32_t gExpectedMagic = 0x03b5d503;
#endif
#define DO(x) x
static inline void startBlock(const uint8_t *p) { DO(gCallback->startBlock(p)); }
static inline void endBlock(const uint8_t *p) { DO(gCallback->endBlock(p)); }
static inline void startTXs(const uint8_t *p) { DO(gCallback->startTXs(p)); }
static inline void endTXs(const uint8_t *p) { DO(gCallback->endTXs(p)); }
static inline void startTX(const uint8_t *p, const uint8_t *hash) { DO(gCallback->startTX(p, hash)); }
static inline void endTX(const uint8_t *p) { DO(gCallback->endTX(p)); }
static inline void startInputs(const uint8_t *p) { DO(gCallback->startInputs(p)); }
static inline void endInputs(const uint8_t *p) { DO(gCallback->endInputs(p)); }
static inline void startInput(const uint8_t *p) { DO(gCallback->startInput(p)); }
static inline void endInput(const uint8_t *p) { DO(gCallback->endInput(p)); }
static inline void startOutputs(const uint8_t *p) { DO(gCallback->startOutputs(p)); }
static inline void endOutputs(const uint8_t *p) { DO(gCallback->endOutputs(p)); }
static inline void startOutput(const uint8_t *p) { DO(gCallback->startOutput(p)); }
static inline void start(const Block *s, const Block *e) { DO(gCallback->start(s, e)); }
#undef DO
static inline void startBlockFile(const uint8_t *p) { gCallback->startBlockFile(p); }
static inline void endBlockFile(const uint8_t *p) { gCallback->endBlockFile(p); }
static inline void startBlock(const Block *b) { gCallback->startBlock(b, gChainSize); }
static inline void endBlock(const Block *b) { gCallback->endBlock(b); }
static inline bool done() { return gCallback->done(); }
static inline void endOutput(
const uint8_t *p,
uint64_t value,
const uint8_t *txHash,
uint64_t outputIndex,
const uint8_t *outputScript,
uint64_t outputScriptSize
) {
gCallback->endOutput(
p,
value,
txHash,
outputIndex,
outputScript,
outputScriptSize
);
}
static inline void edge(
uint64_t value,
const uint8_t *upTXHash,
uint64_t outputIndex,
const uint8_t *outputScript,
uint64_t outputScriptSize,
const uint8_t *downTXHash,
uint64_t inputIndex,
const uint8_t *inputScript,
uint64_t inputScriptSize
) {
gCallback->edge(
value,
upTXHash,
outputIndex,
outputScript,
outputScriptSize,
downTXHash,
inputIndex,
inputScript,
inputScriptSize
);
}
template<
bool skip,
bool fullContext
>
static void parseOutput(
const uint8_t *&p,
const uint8_t *txHash,
uint64_t outputIndex,
const uint8_t *downTXHash,
uint64_t downInputIndex,
const uint8_t *downInputScript,
uint64_t downInputScriptSize,
bool found = false
) {
if(!skip && !fullContext) {
startOutput(p);
}
LOAD(uint64_t, value, p);
LOAD_VARINT(outputScriptSize, p);
auto outputScript = p;
p += outputScriptSize;
if(!skip && fullContext && found) {
edge(
value,
txHash,
outputIndex,
outputScript,
outputScriptSize,
downTXHash,
downInputIndex,
downInputScript,
downInputScriptSize
);
}
if(!skip && !fullContext) {
endOutput(
p,
value,
txHash,
outputIndex,
outputScript,
outputScriptSize
);
}
}
template<
bool skip,
bool fullContext
>
static void parseOutputs(
const uint8_t *&p,
const uint8_t *txHash,
uint64_t stopAtIndex = -1,
const uint8_t *downTXHash = 0,
uint64_t downInputIndex = 0,
const uint8_t *downInputScript = 0,
uint64_t downInputScriptSize = 0
) {
if(!skip && !fullContext) {
startOutputs(p);
}
LOAD_VARINT(nbOutputs, p);
for(uint64_t outputIndex=0; outputIndex<nbOutputs; ++outputIndex) {
auto found = (fullContext && !skip && (stopAtIndex==outputIndex));
parseOutput<skip, fullContext>(
p,
txHash,
outputIndex,
downTXHash,
downInputIndex,
downInputScript,
downInputScriptSize,
found
);
if(found) {
break;
}
}
if(!skip && !fullContext) {
endOutputs(p);
}
}
template<
bool skip
>
static void parseInput(
const Block *block,
const uint8_t *&p,
const uint8_t *txHash,
uint64_t inputIndex
) {
if(!skip) {
startInput(p);
}
auto upTXHash = p;
const Chunk *upTX = 0;
if(gNeedUpstream && !skip) {
auto isGenTX = (0==memcmp(gNullHash.v, upTXHash, sizeof(gNullHash)));
if(likely(false==isGenTX)) {
auto i = gTXOMap.find(upTXHash);
if(unlikely(gTXOMap.end()==i)) {
errFatal("failed to locate upstream transaction");
}
upTX = i->second;
}
}
SKIP(uint256_t, dummyUpTXhash, p);
LOAD(uint32_t, upOutputIndex, p);
LOAD_VARINT(inputScriptSize, p);
if(!skip && 0!=upTX) {
auto inputScript = p;
auto upTXOutputs = upTX->getData();
parseOutputs<false, true>(
upTXOutputs,
upTXHash,
upOutputIndex,
txHash,
inputIndex,
inputScript,
inputScriptSize
);
upTX->releaseData();
}
p += inputScriptSize;
SKIP(uint32_t, sequence, p);
if(!skip) {
endInput(p);
}
}
template<
bool skip
>
static void parseInputs(
const Block *block,
const uint8_t *&p,
const uint8_t *txHash
#if defined(BITCOIN)
, uint64_t* witnessNum
#endif
) {
if(!skip) {
startInputs(p);
}
LOAD_VARINT(nbInputs, p);
#if defined(BITCOIN) // segwit support
*witnessNum = 0;
if(nbInputs == 0)
{
SKIP(unsigned char, flag, p); // flag is always 1 in current implementation
LOAD_VARINT(nbRealInputs, p);
nbInputs = nbRealInputs;
*witnessNum = nbRealInputs;
}
#endif
for(uint64_t inputIndex=0; inputIndex<nbInputs; ++inputIndex) {
parseInput<skip>(
block,
p,
txHash,
inputIndex
);
}
if(!skip) {
endInputs(p);
}
}
#if defined(BITCOIN)
static void parseWitness(
const uint8_t* &p
) {
LOAD_VARINT(num, p);
for(uint64_t i=0; i<num; ++i)
{
LOAD_VARINT(num2, p);
p += num2; // just skip witness data for now
}
}
static void parseWitnesses(
const uint64_t witnessNum,
const uint8_t* &p
) {
for(uint64_t i=0; i<witnessNum; ++i)
parseWitness(p);
}
#endif
template<
bool skip
>
static void parseTX(
const Block *block,
const uint8_t *&p
) {
auto txStart = p;
uint8_t *txHash = 0;
if(gNeedUpstream && !skip) {
auto txEnd = p;
txHash = allocHash256();
parseTX<true>(block, txEnd);
sha256Twice(txHash, txStart, txEnd - txStart);
}
if(!skip) {
startTX(p, txHash);
}
#if defined(CLAM)
LOAD(uint32_t, nVersion, p);
#else
SKIP(uint32_t, nVersion, p);
#endif
#if defined(PEERCOIN) || defined(CLAM) || defined(JUMBUCKS) || defined(PAYCON)
SKIP(uint32_t, nTime, p);
#endif
#if defined(BITCOIN)
uint64_t witnessNum = 0;
parseInputs<skip>(block, p, txHash, &witnessNum);
#else
parseInputs<skip>(block, p, txHash);
#endif
Chunk *txo = 0;
size_t txoOffset = -1;
const uint8_t *outputsStart = p;
if(gNeedUpstream && !skip) {
txo = Chunk::alloc();
gTXOMap[txHash] = txo;
txoOffset = block->chunk->getOffset() + (p - block->chunk->getData());
}
parseOutputs<skip, false>(p, txHash);
#if defined(BITCOIN)
if(witnessNum)
parseWitnesses(witnessNum, p);
#endif
if(txo) {
size_t txoSize = p - outputsStart;
txo->init(
block->chunk->getBlockFile(),
txoSize,
txoOffset
);
}
SKIP(uint32_t, lockTime, p);
#if defined(CLAM)
if(1<nVersion) {
LOAD_VARINT(strCLAMSpeechLen, p);
p += strCLAMSpeechLen;
}
#endif
if(!skip) {
endTX(p);
}
}
static bool parseBlock(
const Block *block
) {
startBlock(block);
auto p = block->chunk->getData();
auto header = p;
SKIP(uint32_t, version, p);
SKIP(uint256_t, prevBlkHash, p);
SKIP(uint256_t, blkMerkleRoot, p);
SKIP(uint32_t, blkTime, p);
SKIP(uint32_t, blkBits, p);
SKIP(uint32_t, blkNonce, p);
#if defined PROTOSHARES
SKIP(uint32_t, nBirthdayA, p);
SKIP(uint32_t, nBirthdayB, p);
#endif
startTXs(p);
LOAD_VARINT(nbTX, p);
for(uint64_t txIndex=0; likely(txIndex<nbTX); ++txIndex) {
parseTX<false>(block, p);
if(done()) {
return true;
}
}
endTXs(p);
#if defined(PEERCOIN) || defined(CLAM) || defined(JUMBUCKS) || defined(PAYCON)
LOAD_VARINT(vchBlockSigSize, p);
p += vchBlockSigSize;
#endif
block->chunk->releaseData();
endBlock(block);
return done();
}
static void parseLongestChain() {
info(
"pass 4 -- full blockchain analysis (with%s index)...",
gNeedUpstream ? "" : "out"
);
auto startTime = Timer::usecs();
gCallback->startLC();
uint64_t bytesSoFar = 0;
auto blk = gNullBlock->next;
start(blk, gMaxBlock);
while(likely(0!=blk)) {
if(0==(blk->height % 10)) {
auto now = Timer::usecs();
static auto last = -1.0;
auto elapsedSinceLastTime = now - last;
auto elapsedSinceStart = now - startTime;
auto progress = bytesSoFar/(double)gChainSize;
auto bytesPerSec = bytesSoFar / (elapsedSinceStart*1e-6);
auto bytesLeft = gChainSize - bytesSoFar;
auto secsLeft = bytesLeft / bytesPerSec;
if((1.0 * 1000 * 1000)<elapsedSinceLastTime) {
fprintf(
stderr,
"block %6d/%6d, %.2f%% done, ETA = %.2fsecs, mem = %.3f Gig \r",
(int)blk->height,
(int)gMaxHeight,
progress*100.0,
secsLeft,
getMem()
);
fflush(stderr);
last = now;
}
}
if(parseBlock(blk)) {
break;
}
bytesSoFar += blk->chunk->getSize();
blk = blk->next;
}
fprintf(stderr, " \r");
gCallback->wrapup();
info("pass 4 -- done.");
}
static void wireLongestChain() {
info("pass 3 -- wire longest chain ...");
auto block = gMaxBlock;
while(1) {
auto prev = block->prev;
if(unlikely(0==prev)) {
break;
}
prev->next = block;
block = prev;
}
info(
"pass 3 -- done, maxHeight=%d",
(int)gMaxHeight
);
}
static void initCallback(
int argc,
char *argv[]
) {
const char *methodName = 0;
if(0<argc) {
methodName = argv[1];
}
if(0==methodName) {
methodName = "";
}
if(0==methodName[0]) {
methodName = "help";
}
gCallback = Callback::find(methodName);
info("starting command \"%s\"", gCallback->name());
if(argv[1]) {
auto i = 0;
while('-'==argv[1][i]) {
argv[1][i++] = 'x';
}
}
auto ir = gCallback->init(argc, (const char **)argv);
if(ir<0) {
errFatal("callback init failed");
}
gNeedUpstream = gCallback->needUpstream();
if(done()) {
fprintf(stderr, "\n");
exit(0);
}
}
static void findBlockParent(
Block *b
) {
auto where = lseek64(
b->chunk->getBlockFile()->fd,
b->chunk->getOffset(),
SEEK_SET
);
if(where!=(signed)b->chunk->getOffset()) {
sysErrFatal(
"failed to seek into block chain file %s",
b->chunk->getBlockFile()->name.c_str()
);
}
uint8_t buf[gHeaderSize];
auto nbRead = read(
b->chunk->getBlockFile()->fd,
buf,
gHeaderSize
);
if(nbRead<(signed)gHeaderSize) {
sysErrFatal(
"failed to read from block chain file %s",
b->chunk->getBlockFile()->name.c_str()
);
}
auto i = gBlockMap.find(4 + buf);
if(unlikely(gBlockMap.end()==i)) {
uint8_t bHash[2*kSHA256ByteSize + 1];
toHex(bHash, b->hash);
uint8_t pHash[2*kSHA256ByteSize + 1];
toHex(pHash, 4 + buf);
warning(
"in block %s failed to locate parent block %s",
bHash,
pHash
);
return;
}
b->prev = i->second;
}
static void computeBlockHeight(
Block *block,
size_t &lateLinks
) {
if(unlikely(gNullBlock==block)) {
return;
}
auto b = block;
while(b->height<0) {
if(unlikely(0==b->prev)) {
findBlockParent(b);
++lateLinks;
if(0==b->prev) {
warning("failed to locate parent block");
return;
}
}
b->prev->next = b;
b = b->prev;
}
auto height = b->height;
while(1) {
b->height = height++;
if(likely(gMaxHeight<b->height)) {
gMaxHeight = b->height;
gMaxBlock = b;
}
auto next = b->next;
b->next = 0;
if(block==b) {
break;
}
b = next;
}
}
static void computeBlockHeights() {
size_t lateLinks = 0;
info("pass 2 -- link all blocks ...");
for(const auto &pair:gBlockMap) {
computeBlockHeight(pair.second, lateLinks);
}
info(
"pass 2 -- done, did %d late links",
(int)lateLinks
);
}
static void getBlockHeader(
size_t &size,
Block *&prev,
uint8_t *&hash,
size_t &earlyMissCnt,
const uint8_t *p
) {
LOAD(uint32_t, magic, p);
if(unlikely(gExpectedMagic!=magic)) {
hash = 0;
return;
}
LOAD(uint32_t, sz, p);
size = sz;
prev = 0;
hash = allocHash256();
#if defined(DARKCOIN)
h9(hash, p, gHeaderSize);
#elif defined(PAYCON)
h13(hash, p, gHeaderSize);
#elif defined(CLAM)
auto pBis = p;
LOAD(uint32_t, nVersion, pBis);
if(6<nVersion) {
sha256Twice(hash, p, gHeaderSize);
} else {
scrypt(hash, p, gHeaderSize);
}
#elif defined(JUMBUCKS)
scrypt(hash, p, gHeaderSize);
#else
sha256Twice(hash, p, gHeaderSize);
#endif
auto i = gBlockMap.find(p + 4);
if(likely(gBlockMap.end()!=i)) {
prev = i->second;
} else {
++earlyMissCnt;
}
}
static void buildBlockHeaders() {
info("pass 1 -- walk all blocks and build headers ...");
size_t nbBlocks = 0;
size_t baseOffset = 0;
size_t earlyMissCnt = 0;
uint8_t buf[8+gHeaderSize];
const auto sz = sizeof(buf);
const auto startTime = Timer::usecs();
const auto oneMeg = 1024 * 1024;
for(const auto &blockFile : blockFiles) {
startBlockFile(0);
while(1) {
auto nbRead = read(blockFile.fd, buf, sz);
if(nbRead<(signed)sz) {
break;
}
startBlock((uint8_t*)0);
uint8_t *hash = 0;
Block *prevBlock = 0;
size_t blockSize = 0;
getBlockHeader(
blockSize,
prevBlock,
hash,
earlyMissCnt,
buf
);
if(unlikely(0==hash)) {
break;
}
auto where = lseek(blockFile.fd, (blockSize + 8) - sz, SEEK_CUR);
auto blockOffset = where - blockSize;
if(where<0) {
break;
}
auto block = Block::alloc();
block->init(hash, &blockFile, blockSize, prevBlock, blockOffset);
gBlockMap[hash] = block;
endBlock((uint8_t*)0);
++nbBlocks;
}
baseOffset += blockFile.size;
auto now = Timer::usecs();
auto elapsed = now - startTime;
auto bytesPerSec = baseOffset / (elapsed*1e-6);
auto bytesLeft = gChainSize - baseOffset;
auto secsLeft = bytesLeft / bytesPerSec;
fprintf(
stderr,
" %.2f%% (%.2f/%.2f Gigs) -- %6d blocks -- %.2f Megs/sec -- ETA %.0f secs -- ELAPSED %.0f secs \r",
(100.0*baseOffset)/gChainSize,
baseOffset/(1000.0*oneMeg),
gChainSize/(1000.0*oneMeg),
(int)nbBlocks,
bytesPerSec*1e-6,
secsLeft,
elapsed*1e-6
);
fflush(stderr);
endBlockFile(0);
}
if(0==nbBlocks) {
warning("found no blocks - giving up ");
exit(1);
}
char msg[128];
msg[0] = 0;
if(0<earlyMissCnt) {
sprintf(msg, ", %d early link misses", (int)earlyMissCnt);
}
auto elapsed = 1e-6*(Timer::usecs() - startTime);
info(
"pass 1 -- took %.0f secs, %6d blocks, %.2f Gigs, %.2f Megs/secs %s, mem=%.3f Gigs ",
elapsed,
(int)nbBlocks,
(gChainSize * 1e-9),
(gChainSize * 1e-6) / elapsed,
msg,
getMem()
);
}
static void buildNullBlock() {
gBlockMap[gNullHash.v] = gNullBlock = Block::alloc();
gNullBlock->init(gNullHash.v, 0, 0, 0, 0);
gNullBlock->height = 0;
}
static void initHashtables() {
info("initializing hash tables");
gTXOMap.setEmptyKey(empty);
gBlockMap.setEmptyKey(empty);
auto kAvgBytesPerTX = 542.0;
auto nbTxEstimate = (size_t)(1.1 * (gChainSize / kAvgBytesPerTX));
if(gNeedUpstream) {
gTXOMap.resize(nbTxEstimate);
}
auto kAvgBytesPerBlock = 140000;
auto nbBlockEstimate = (size_t)(1.1 * (gChainSize / kAvgBytesPerBlock));
gBlockMap.resize(nbBlockEstimate);
info("estimated number of blocks = %.2fK", 1e-3*nbBlockEstimate);
info("estimated number of transactions = %.2fM", 1e-6*nbTxEstimate);
info("done initializing hash tables - mem = %.3f Gigs", getMem());
}
#if defined(__CYGWIN__)
#include <sys/cygwin.h>
#include <cygwin/version.h>
static char *canonicalize_file_name(
const char *fileName
) {
auto r = (char*)cygwin_create_path(CCP_WIN_A_TO_POSIX, fileName);
if(0==r) {
errFatal("can't canonicalize path %s", fileName);
}
return r;
}
#endif
#if defined(_WIN64)
static char *canonicalize_file_name(
const char *fileName
) {
return strdup(fileName);
}
#endif
static std::string getNormalizedDirName(
const std::string &dirName
) {
auto t = canonicalize_file_name(dirName.c_str());
if(0==t) {
errFatal(
"problem accessing directory %s",
dirName.c_str()
);
}
auto r = std::string(t);
free(t);
auto sz = r.size();
if(0<sz) {
if('/'==r[sz-1]) {
r = std::string(r, 0, sz-2);
}
}
return r;
}
static std::string getBlockchainDir() {
auto dir = getenv("BLOCKCHAIN_DIR");
if(0==dir) {
dir = getenv("HOME");
if(0==dir) {
errFatal("please specify either env. variable HOME or BLOCKCHAIN_DIR");
}
}
return getNormalizedDirName(
dir +
std::string("/") +
kCoinDirName
);
}
static void findBlockFiles() {
gChainSize = 0;
auto blockChainDir = getBlockchainDir();
auto blockDir = blockChainDir + std::string("/blocks");
info("loading block chain from directory: %s", blockChainDir.c_str());
struct stat statBuf;
auto r = stat(blockDir.c_str(), &statBuf);
auto oldStyle = (r<0 || !S_ISDIR(statBuf.st_mode));
int blkDatId = (oldStyle ? 1 : 0);
auto fmt = oldStyle ? "/blk%04d.dat" : "/blocks/blk%05d.dat";
while(1) {