bool ModifyReparsePoint(const wchar_t *Object,const wchar_t *NewData)
{
bool Result=false;
LPBYTE szBuff=new BYTE[MAXIMUM_REPARSE_DATA_BUFFER_SIZE];
if(szBuff)
{
PREPARSE_DATA_BUFFER rdb=reinterpret_cast<PREPARSE_DATA_BUFFER>(szBuff);
if (GetREPARSE_DATA_BUFFER(Object,rdb))
{
bool FillResult=false;
switch (rdb->ReparseTag)
{
case IO_REPARSE_TAG_MOUNT_POINT:
{
string strPrintName,strSubstituteName;
ConvertNameToFull(NewData,strPrintName);
strSubstituteName=L"\\??\\";
strSubstituteName+=(strPrintName.CPtr()+(HasPathPrefix(strPrintName)?4:0));
FillResult=FillREPARSE_DATA_BUFFER(rdb,strPrintName,strPrintName.GetLength(),strSubstituteName,strSubstituteName.GetLength());
}
break;
case IO_REPARSE_TAG_SYMLINK:
{
string strPrintName=NewData,strSubstituteName=NewData;
if (IsAbsolutePath(NewData))
{
strSubstituteName=L"\\??\\";
strSubstituteName+=(strPrintName.CPtr()+(HasPathPrefix(strPrintName)?4:0));
rdb->SymbolicLinkReparseBuffer.Flags=0;
}
else
{
rdb->SymbolicLinkReparseBuffer.Flags=SYMLINK_FLAG_RELATIVE;
}
FillResult=FillREPARSE_DATA_BUFFER(rdb,strPrintName,strPrintName.GetLength(),strSubstituteName,strSubstituteName.GetLength());
}
break;
}
if (FillResult)
{
Result=SetREPARSE_DATA_BUFFER(Object,rdb);
}
else
{
SetLastError(ERROR_INSUFFICIENT_BUFFER);
}
}
delete[] szBuff;
}
return Result;
}
bool ModifyReparsePoint(const string& Object,const string& NewData)
{
block_ptr<REPARSE_DATA_BUFFER> rdb(MAXIMUM_REPARSE_DATA_BUFFER_SIZE);
if (!GetREPARSE_DATA_BUFFER(Object, rdb.get()))
return false;
switch (rdb->ReparseTag)
{
case IO_REPARSE_TAG_MOUNT_POINT:
{
const auto strPrintName = ConvertNameToFull(NewData);
const auto strSubstituteName = KernelPath(NTPath(strPrintName));
if (!FillREPARSE_DATA_BUFFER(rdb.get(), strPrintName, strSubstituteName))
{
SetLastError(ERROR_INSUFFICIENT_BUFFER);
return false;
}
}
break;
case IO_REPARSE_TAG_SYMLINK:
{
const auto& strPrintName = NewData;
auto strSubstituteName = NewData;
if (IsAbsolutePath(NewData))
{
strSubstituteName = KernelPath(NTPath(strSubstituteName));
rdb->SymbolicLinkReparseBuffer.Flags=0;
}
else
{
rdb->SymbolicLinkReparseBuffer.Flags=SYMLINK_FLAG_RELATIVE;
}
if (!FillREPARSE_DATA_BUFFER(rdb.get(), strPrintName, strSubstituteName))
{
SetLastError(ERROR_INSUFFICIENT_BUFFER);
return false;
}
}
break;
default:
return false;
}
return SetREPARSE_DATA_BUFFER(Object,rdb.get());
}
bool CreateReparsePoint(const string& Target, const string& Object,ReparsePointTypes Type)
{
bool Result=false;
{
switch (Type)
{
case RP_HARDLINK:
break;
case RP_EXACTCOPY:
Result=DuplicateReparsePoint(Target,Object);
break;
case RP_SYMLINK:
case RP_SYMLINKFILE:
case RP_SYMLINKDIR:
{
os::fs::file_status ObjectStatus(Object);
if(Type == RP_SYMLINK)
{
Type = os::fs::is_directory(Target)? RP_SYMLINKDIR : RP_SYMLINKFILE;
}
if (imports.CreateSymbolicLinkW && !os::fs::exists(ObjectStatus))
{
Result=os::fs::CreateSymbolicLink(Object,Target,Type==RP_SYMLINKDIR?SYMBOLIC_LINK_FLAG_DIRECTORY:0);
}
else
{
const auto ObjectCreated = Type==RP_SYMLINKDIR?
os::fs::is_directory(ObjectStatus) || os::fs::create_directory(Object) :
os::fs::is_file(ObjectStatus) || os::fs::file(Object, 0, 0, nullptr, CREATE_NEW);
if (ObjectCreated)
{
block_ptr<REPARSE_DATA_BUFFER> rdb(MAXIMUM_REPARSE_DATA_BUFFER_SIZE);
rdb->ReparseTag=IO_REPARSE_TAG_SYMLINK;
const auto& strPrintName = Target;
auto strSubstituteName = Target;
if (IsAbsolutePath(Target))
{
strSubstituteName = KernelPath(NTPath(strSubstituteName));
rdb->SymbolicLinkReparseBuffer.Flags=0;
}
else
{
rdb->SymbolicLinkReparseBuffer.Flags=SYMLINK_FLAG_RELATIVE;
}
if (FillREPARSE_DATA_BUFFER(rdb.get(), strPrintName, strSubstituteName))
{
Result=SetREPARSE_DATA_BUFFER(Object,rdb.get());
}
else
{
SetLastError(ERROR_INSUFFICIENT_BUFFER);
}
}
}
}
break;
case RP_JUNCTION:
case RP_VOLMOUNT:
{
const auto strPrintName = ConvertNameToFull(Target);
auto strSubstituteName = KernelPath(NTPath(strPrintName));
block_ptr<REPARSE_DATA_BUFFER> rdb(MAXIMUM_REPARSE_DATA_BUFFER_SIZE);
rdb->ReparseTag=IO_REPARSE_TAG_MOUNT_POINT;
if (FillREPARSE_DATA_BUFFER(rdb.get(), strPrintName, strSubstituteName))
{
Result=SetREPARSE_DATA_BUFFER(Object,rdb.get());
}
else
{
SetLastError(ERROR_INSUFFICIENT_BUFFER);
}
}
break;
}
}
return Result;
}
bool WINAPI CreateReparsePoint(const wchar_t *Target, const wchar_t *Object,DWORD Type)
{
bool Result=false;
if (Object && *Object && Target && *Target)
{
switch (Type)
{
case RP_EXACTCOPY:
Result=DuplicateReparsePoint(Target,Object);
break;
case RP_SYMLINK:
case RP_SYMLINKFILE:
case RP_SYMLINKDIR:
if(Type == RP_SYMLINK)
{
DWORD Attr = apiGetFileAttributes(Target);
Type = ((Attr != INVALID_FILE_ATTRIBUTES) && (Attr&FILE_ATTRIBUTE_DIRECTORY)? RP_SYMLINKDIR : RP_SYMLINKFILE);
}
if (ifn.pfnCreateSymbolicLink)
{
Result=apiCreateSymbolicLink(Object,Target,Type==RP_SYMLINKDIR?SYMBOLIC_LINK_FLAG_DIRECTORY:0);
}
else
{
bool ObjectCreated=false;
if (Type==RP_SYMLINKDIR)
{
ObjectCreated=apiCreateDirectory(Object,nullptr)!=FALSE;
}
else
{
File file;
if(file.Open(Object,0,0,nullptr,CREATE_NEW))
{
ObjectCreated=true;
file.Close();
}
}
if (ObjectCreated)
{
LPBYTE szBuff=new BYTE[MAXIMUM_REPARSE_DATA_BUFFER_SIZE];
if(szBuff)
{
PREPARSE_DATA_BUFFER rdb=reinterpret_cast<PREPARSE_DATA_BUFFER>(szBuff);
rdb->ReparseTag=IO_REPARSE_TAG_SYMLINK;
string strPrintName=Target,strSubstituteName=Target;
if (IsAbsolutePath(Target))
{
strSubstituteName=L"\\??\\";
strSubstituteName+=(strPrintName.CPtr()+(HasPathPrefix(strPrintName)?4:0));
rdb->SymbolicLinkReparseBuffer.Flags=0;
}
else
{
rdb->SymbolicLinkReparseBuffer.Flags=SYMLINK_FLAG_RELATIVE;
}
if (FillREPARSE_DATA_BUFFER(rdb,strPrintName,strPrintName.GetLength(),strSubstituteName,strSubstituteName.GetLength()))
{
Result=SetREPARSE_DATA_BUFFER(Object,rdb);
}
else
{
SetLastError(ERROR_INSUFFICIENT_BUFFER);
}
delete[] szBuff;
}
}
}
break;
case RP_JUNCTION:
case RP_VOLMOUNT:
{
string strPrintName,strSubstituteName;
ConvertNameToFull(Target,strPrintName);
strSubstituteName=L"\\??\\";
strSubstituteName+=(strPrintName.CPtr()+(HasPathPrefix(strPrintName)?4:0));
BYTE szBuff[MAXIMUM_REPARSE_DATA_BUFFER_SIZE];
PREPARSE_DATA_BUFFER rdb=reinterpret_cast<PREPARSE_DATA_BUFFER>(szBuff);
rdb->ReparseTag=IO_REPARSE_TAG_MOUNT_POINT;
if (FillREPARSE_DATA_BUFFER(rdb,strPrintName,strPrintName.GetLength(),strSubstituteName,strSubstituteName.GetLength()))
{
Result=SetREPARSE_DATA_BUFFER(Object,rdb);
}
else
{
SetLastError(ERROR_INSUFFICIENT_BUFFER);
}
}
break;
}
}
return Result;
}
