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/*
Derived from source code of TrueCrypt 7.1a, which is
Copyright (c) 2008-2012 TrueCrypt Developers Association and which is governed
by the TrueCrypt License 3.0.
Modifications and additions to the original source code (contained in this file)
and all other portions of this file are Copyright (c) 2013-2017 IDRIX
and are governed by the Apache License 2.0 the full text of which is
contained in the file License.txt included in VeraCrypt binary and source
code distribution packages.
*/
#include "Platform/FilesystemPath.h"
#include "Platform/SystemException.h"
#include "Platform/StringConverter.h"
#include <stdio.h>
#include <sys/stat.h>
namespace VeraCrypt
{
void FilesystemPath::Delete () const
{
throw_sys_sub_if (remove (string (*this).c_str()) == -1, Path);
}
UserId FilesystemPath::GetOwner () const
{
struct stat statData;
throw_sys_if (stat (StringConverter::ToSingle (Path).c_str(), &statData) == -1);
UserId owner;
owner.SystemId = statData.st_uid;
return owner;
}
FilesystemPathType::Enum FilesystemPath::GetType () const
{
// Strip trailing directory separator
wstring path = Path;
size_t pos = path.find_last_not_of (L'/');
if (path.size() > 2 && pos != path.size() - 1)
path = path.substr (0, pos + 1);
struct stat statData;
throw_sys_sub_if (stat (StringConverter::ToSingle (path).c_str(), &statData) != 0, Path);
if (S_ISREG (statData.st_mode)) return FilesystemPathType::File;
if (S_ISDIR (statData.st_mode)) return FilesystemPathType::Directory;
if (S_ISCHR (statData.st_mode)) return FilesystemPathType::CharacterDevice;
if (S_ISBLK (statData.st_mode)) return FilesystemPathType::BlockDevice;
if (S_ISLNK (statData.st_mode)) return FilesystemPathType::SymbolickLink;
return FilesystemPathType::Unknown;
}
FilesystemPath FilesystemPath::ToBaseName () const
{
wstring path = Path;
size_t pos = path.find_last_of (L'/');
if (pos == string::npos)
return Path;
return Path.substr (pos + 1);
}
FilesystemPath FilesystemPath::ToHostDriveOfPartition () const
{
DevicePath path;
#ifdef TC_LINUX
path = StringConverter::StripTrailingNumber (StringConverter::ToSingle (Path));
// If simply removing trailing number didn't produce a valid drive name, try to use sysfs to get the right one
if (!path.IsDevice()) {
struct stat st;
if(stat (StringConverter::ToSingle (Path).c_str (), &st) == 0) {
const long maxPathLength = pathconf ("/", _PC_PATH_MAX);
if(maxPathLength != -1) {
string linkPathName ("/sys/dev/block/");
linkPathName += StringConverter::ToSingle (major (st.st_rdev)) + string (":") + StringConverter::ToSingle (minor (st.st_rdev));
vector<char> linkTargetPath(maxPathLength+1);
if(readlink(linkPathName.c_str (), linkTargetPath.data(), linkTargetPath.size()) != -1) {
const string targetPathStr (linkTargetPath.data());
const size_t lastSlashPos = targetPathStr.find_last_of ('/');
const size_t secondLastSlashPos = targetPathStr.find_last_of ('/', lastSlashPos-1);
path = string ("/dev/") + targetPathStr.substr (secondLastSlashPos+1, lastSlashPos-secondLastSlashPos-1);
}
}
}
}
#elif defined (TC_MACOSX)
string pathStr = StringConverter::StripTrailingNumber (StringConverter::ToSingle (Path));
path = pathStr.substr (0, pathStr.size() - 1);
#elif defined (TC_FREEBSD)
string pathStr = StringConverter::ToSingle (Path);
size_t p = pathStr.rfind ("s");
if (p == string::npos)
throw PartitionDeviceRequired (SRC_POS);
path = pathStr.substr (0, p);
#elif defined (TC_SOLARIS)
path = StringConverter::StripTrailingNumber (StringConverter::ToSingle (Path)) + "0";
#else
throw NotImplemented (SRC_POS);
#endif
if (!path.IsDevice())
throw PartitionDeviceRequired (SRC_POS);
return path;
}
}
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