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BinaryData.cpp
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296 lines (240 loc) · 8.69 KB
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////////////////////////////////////////////////////////////////////////////////
// //
// Copyright (C) 2011-2015, Armory Technologies, Inc. //
// Distributed under the GNU Affero General Public License (AGPL v3) //
// See LICENSE-ATI or http://www.gnu.org/licenses/agpl.html //
// //
////////////////////////////////////////////////////////////////////////////////
#include "BinaryData.h"
#include "BtcUtils.h"
#include "EncryptionUtils.h"
BinaryData BinaryData::EmptyBinData_(0);
////////////////////////////////////////////////////////////////////////////////
BinaryData::BinaryData(BinaryDataRef const & bdRef)
{
copyFrom(bdRef.getPtr(), bdRef.getSize());
}
////////////////////////////////////////////////////////////////////////////////
void BinaryData::copyFrom(BinaryDataRef const & bdr)
{
copyFrom( bdr.getPtr(), bdr.getSize() );
}
////////////////////////////////////////////////////////////////////////////////
BinaryDataRef BinaryData::getRef(void) const
{
return BinaryDataRef(getPtr(), getSize());
}
////////////////////////////////////////////////////////////////////////////////
BinaryData & BinaryData::append(BinaryDataRef const & bd2)
{
if(bd2.getSize()==0)
return (*this);
if(getSize()==0)
copyFrom(bd2.getPtr(), bd2.getSize());
else
data_.insert(data_.end(), bd2.getPtr(), bd2.getPtr()+bd2.getSize());
return (*this);
}
/////////////////////////////////////////////////////////////////////////////
BinaryData & BinaryData::append(uint8_t const * str, size_t sz)
{
BinaryDataRef appStr(str, sz);
return append(appStr);
}
////////////////////////////////////////////////////////////////////////////////
int32_t BinaryData::find(BinaryDataRef const & matchStr, uint32_t startPos)
{
int32_t finalAnswer = -1;
if(matchStr.getSize()==0)
return startPos;
for(int32_t i=startPos; i<=(int32_t)getSize()-(int32_t)matchStr.getSize(); i++)
{
if(matchStr[0] != data_[i])
continue;
for(uint32_t j=0; j<matchStr.getSize(); j++)
{
if(matchStr[j] != data_[i+j])
break;
// If we are at this instruction and is the last index, it's a match
if(j==matchStr.getSize()-1)
finalAnswer = i;
}
if(finalAnswer != -1)
break;
}
return finalAnswer;
}
////////////////////////////////////////////////////////////////////////////////
int32_t BinaryData::find(BinaryData const & matchStr, uint32_t startPos)
{
BinaryDataRef bdrmatch(matchStr);
return find(bdrmatch, startPos);
}
////////////////////////////////////////////////////////////////////////////////
bool BinaryData::contains(BinaryData const & matchStr, uint32_t startPos)
{
return (find(matchStr, startPos) != -1);
}
////////////////////////////////////////////////////////////////////////////////
bool BinaryData::contains(BinaryDataRef const & matchStr, uint32_t startPos)
{
return (find(matchStr, startPos) != -1);
}
/////////////////////////////////////////////////////////////////////////////
bool BinaryData::startsWith(BinaryDataRef const & matchStr) const
{
if(matchStr.getSize() > getSize())
return false;
for(uint32_t i=0; i<matchStr.getSize(); i++)
if(matchStr[i] != (*this)[i])
return false;
return true;
}
/////////////////////////////////////////////////////////////////////////////
bool BinaryData::startsWith(BinaryData const & matchStr) const
{
if(matchStr.getSize() > getSize())
return false;
for(uint32_t i=0; i<matchStr.getSize(); i++)
if(matchStr[i] != (*this)[i])
return false;
return true;
}
/////////////////////////////////////////////////////////////////////////////
bool BinaryData::endsWith(BinaryDataRef const & matchStr) const
{
size_t sz = matchStr.getSize();
if(sz > getSize())
return false;
for(uint32_t i=0; i<sz; i++)
if(matchStr[sz-(i+1)] != (*this)[getSize()-(i+1)])
return false;
return true;
}
/////////////////////////////////////////////////////////////////////////////
bool BinaryData::endsWith(BinaryData const & matchStr) const
{
size_t sz = matchStr.getSize();
if(sz > getSize())
return false;
for(uint32_t i=0; i<sz; i++)
if(matchStr[sz-(i+1)] != (*this)[getSize()-(i+1)])
return false;
return true;
}
/////////////////////////////////////////////////////////////////////////////
BinaryDataRef BinaryData::getSliceRef(ssize_t start_pos, uint32_t nChar) const
{
if(start_pos < 0)
start_pos = getSize() + start_pos;
if((size_t)start_pos + nChar > getSize())
{
cerr << "getSliceRef: Invalid BinaryData access" << endl;
return BinaryDataRef();
}
return BinaryDataRef( getPtr()+start_pos, nChar);
}
/////////////////////////////////////////////////////////////////////////////
BinaryData BinaryData::getSliceCopy(ssize_t start_pos, uint32_t nChar) const
{
if(start_pos < 0)
start_pos = getSize() + start_pos;
if((size_t)start_pos + nChar > getSize())
{
cerr << "getSliceCopy: Invalid BinaryData access" << endl;
return BinaryData();
}
return BinaryData(getPtr()+start_pos, nChar);
}
/////////////////////////////////////////////////////////////////////////////
void BinaryData::createFromHex(const string& str)
{
BinaryDataRef bdr((uint8_t*)str.c_str(), str.size());
createFromHex(bdr);
}
/////////////////////////////////////////////////////////////////////////////
void BinaryData::createFromHex(BinaryDataRef const & bdr)
{
static const uint8_t binLookupTable[256] = {
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0, 0, 0, 0, 0, 0,
0, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };
if (bdr.getSize() % 2 != 0)
{
LOGERR << "odd hexit count";
throw runtime_error("odd hexit count");
}
size_t newLen = bdr.getSize() / 2;
alloc(newLen);
auto ptr = bdr.getPtr();
for (size_t i = 0; i<newLen; i++)
{
uint8_t char1 = binLookupTable[*(ptr + 2 * i)];
uint8_t char2 = binLookupTable[*(ptr + 2 * i + 1)];
data_[i] = (char1 << 4) | char2;
}
}
/////////////////////////////////////////////////////////////////////////////
uint64_t BinaryReader::get_var_int(uint8_t* nRead)
{
uint32_t nBytes;
uint64_t varInt = BtcUtils::readVarInt(
bdStr_.getPtr() + pos_, bdStr_.getSize() - pos_, &nBytes);
if(nRead != NULL)
*nRead = nBytes;
pos_ += nBytes;
return varInt;
}
/////////////////////////////////////////////////////////////////////////////
uint64_t BinaryRefReader::get_var_int(uint8_t* nRead)
{
uint32_t nBytes;
uint64_t varInt = BtcUtils::readVarInt( bdRef_.getPtr() + pos_, getSizeRemaining(), &nBytes);
if(nRead != NULL)
*nRead = nBytes;
pos_.fetch_add(nBytes, memory_order_relaxed);
return varInt;
}
/////////////////////////////////////////////////////////////////////////////
bool BinaryData::operator==(BinaryDataRef const & bd2) const
{
if(getSize() != bd2.getSize())
return false;
return (memcmp(getPtr(), bd2.getPtr(), getSize()) == 0);
}
/////////////////////////////////////////////////////////////////////////////
bool BinaryData::operator<(BinaryDataRef const & bd2) const
{
size_t minLen = min(getSize(), bd2.getSize());
auto ref_ptr = bd2.getPtr();
for (size_t i = 0; i<minLen; i++)
{
if (data_[i] == ref_ptr[i])
continue;
return data_[i] < ref_ptr[i];
}
return (getSize() < bd2.getSize());
}
/////////////////////////////////////////////////////////////////////////////
SecureBinaryData BinaryRefReader::get_SecureBinaryData(uint32_t nBytes)
{
if (getSizeRemaining() < nBytes)
throw runtime_error("buffer overflow");
SecureBinaryData out(nBytes);
bdRef_.copyTo(out.getPtr(), pos_, nBytes);
pos_.fetch_add(nBytes, memory_order_relaxed);
return out;
}