mirror of
https://github.com/uroni/urbackup_backend.git
synced 2025-10-26 11:36:50 +00:00
508 lines
12 KiB
C++
508 lines
12 KiB
C++
/*************************************************************************
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* UrBackup - Client/Server backup system
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* Copyright (C) 2011 Martin Raiber
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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**************************************************************************/
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#include "os_functions.h"
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#include "../stringtools.h"
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#ifndef OS_FUNC_NO_SERVER
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#include "../Interface/Server.h"
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#endif
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#ifdef _WIN_PRE_VISTA
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#define _WIN32_WINNT 0x0500
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#endif
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#include <winsock2.h>
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#include <windows.h>
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#include <stdlib.h>
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#include <algorithm>
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#include <io.h>
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#include <fcntl.h>
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#include <sys\stat.h>
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#include <time.h>
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#define REPARSE_MOUNTPOINT_HEADER_SIZE 8
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typedef struct {
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DWORD ReparseTag;
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DWORD ReparseDataLength;
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WORD Reserved;
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WORD ReparseTargetLength;
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WORD ReparseTargetMaximumLength;
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WORD Reserved1;
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WCHAR ReparseTarget[1];
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} REPARSE_MOUNTPOINT_DATA_BUFFER, *PREPARSE_MOUNTPOINT_DATA_BUFFER;
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void getMousePos(int &x, int &y)
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{
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POINT mousepos;
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GetCursorPos(&mousepos);
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x=mousepos.x;
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y=mousepos.y;
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}
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std::vector<SFile> getFiles(const std::wstring &path, bool *has_error)
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{
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if(has_error!=NULL)
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{
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*has_error=false;
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}
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std::vector<SFile> tmp;
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HANDLE fHandle;
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WIN32_FIND_DATAW wfd;
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std::wstring tpath=path;
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if(!tpath.empty() && tpath[tpath.size()-1]=='\\' ) tpath.erase(path.size()-1, 1);
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fHandle=FindFirstFileW((tpath+L"\\*").c_str(),&wfd);
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if(fHandle==INVALID_HANDLE_VALUE)
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{
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if(tpath.find(L"\\\\?\\")==0)
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{
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tpath.erase(0, 4);
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fHandle=FindFirstFileW((tpath+L"\\*").c_str(),&wfd);
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}
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if(fHandle==INVALID_HANDLE_VALUE)
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{
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if(has_error!=NULL)
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{
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*has_error=true;
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}
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return tmp;
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}
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}
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do
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{
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if( !(wfd.dwFileAttributes &FILE_ATTRIBUTE_REPARSE_POINT && wfd.dwFileAttributes &FILE_ATTRIBUTE_DIRECTORY) )
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{
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SFile f;
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f.name=wfd.cFileName;
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if(f.name==L"." || f.name==L".." )
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continue;
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f.isdir=(wfd.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY)>0;
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LARGE_INTEGER lwt;
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lwt.HighPart=wfd.ftLastWriteTime.dwHighDateTime;
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lwt.LowPart=wfd.ftLastWriteTime.dwLowDateTime;
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f.last_modified=lwt.QuadPart;
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LARGE_INTEGER size;
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size.HighPart=wfd.nFileSizeHigh;
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size.LowPart=wfd.nFileSizeLow;
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f.size=size.QuadPart;
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tmp.push_back(f);
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}
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}
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while (FindNextFileW(fHandle,&wfd) );
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FindClose(fHandle);
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std::sort(tmp.begin(), tmp.end());
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return tmp;
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}
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#ifndef OS_FUNC_NO_SERVER
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void removeFile(const std::wstring &path)
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{
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_unlink(Server->ConvertToUTF8(path).c_str());
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}
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void moveFile(const std::wstring &src, const std::wstring &dst)
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{
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rename(Server->ConvertToUTF8(src).c_str(), Server->ConvertToUTF8(dst).c_str() );
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}
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#endif
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bool isDirectory(const std::wstring &path)
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{
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DWORD attrib = GetFileAttributesW(path.c_str());
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if ( attrib == 0xFFFFFFFF || !(attrib & FILE_ATTRIBUTE_DIRECTORY) )
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{
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return false;
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}
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else
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{
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return true;
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}
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}
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int64 os_atoi64(const std::string &str)
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{
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return _atoi64(str.c_str());
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}
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bool os_create_dir(const std::wstring &dir)
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{
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return CreateDirectoryW(dir.c_str(), NULL)!=0;
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}
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bool os_create_dir(const std::string &dir)
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{
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return CreateDirectoryA(dir.c_str(), NULL)!=0;
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}
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bool os_create_hardlink(const std::wstring &linkname, const std::wstring &fname, bool use_ioref)
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{
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BOOL r=CreateHardLinkW(linkname.c_str(), fname.c_str(), NULL);
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if(!r)
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{
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int err=GetLastError();
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if(err==1142) //TOO MANY LINKS
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{
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int blub=55; //Debugging
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}
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}
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return r!=0;
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}
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int64 os_free_space(const std::wstring &path)
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{
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std::wstring cp=path;
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if(path.size()==0)
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return -1;
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if(cp[cp.size()-1]=='/')
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cp.erase(cp.size()-1, 1);
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if(cp[cp.size()-1]!='\\')
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cp+='\\';
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ULARGE_INTEGER li;
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BOOL r=GetDiskFreeSpaceExW(path.c_str(), &li, NULL, NULL);
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if(r!=0)
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return li.QuadPart;
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else
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return -1;
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}
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bool os_directory_exists(const std::wstring &path)
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{
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return isDirectory(path);
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}
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bool os_remove_nonempty_dir(const std::wstring &path)
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{
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WIN32_FIND_DATAW wfd;
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HANDLE hf=FindFirstFileW((path+L"\\*").c_str(), &wfd);
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BOOL b=true;
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while( b )
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{
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if( (std::wstring)wfd.cFileName!=L"." && (std::wstring)wfd.cFileName!=L".." )
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{
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if( wfd.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY )
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{
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os_remove_nonempty_dir(path+L"\\"+wfd.cFileName);
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}
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else
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{
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DeleteFileW((path+L"\\"+wfd.cFileName).c_str());
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}
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}
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b=FindNextFileW(hf,&wfd);
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}
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FindClose(hf);
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RemoveDirectoryW(path.c_str());
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return true;
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}
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bool os_remove_symlink_dir(const std::wstring &path)
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{
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return RemoveDirectoryW(path.c_str())!=FALSE;
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}
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bool os_remove_dir(const std::string &path)
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{
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return RemoveDirectoryA(path.c_str())!=FALSE;
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}
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std::wstring os_file_sep(void)
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{
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return L"\\";
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}
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std::string os_file_sepn(void)
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{
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return "\\";
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}
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bool os_link_symbolic_symlink(const std::wstring &target, const std::wstring &lname)
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{
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#if (_WIN32_WINNT >= 0x0600)
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DWORD flags=0;
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if(isDirectory(target))
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flags|=SYMBOLIC_LINK_FLAG_DIRECTORY;
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DWORD rc=CreateSymbolicLink(lname.c_str(), target.c_str(), flags);
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if(rc==FALSE)
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{
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#ifndef OS_FUNC_NO_SERVER
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Server->Log(L"Creating symbolic link from \""+lname+L"\" to \""+target+L"\" failed with error "+convert((int)GetLastError()), LL_ERROR);
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#endif
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}
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return rc!=0;
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#else
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return true;
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#endif
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}
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bool os_link_symbolic_junctions(const std::wstring &target, const std::wstring &lname)
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{
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bool ret=false;
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std::wstring wtarget=target;
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HANDLE hJunc=INVALID_HANDLE_VALUE;
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char *buf=NULL;
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if(wtarget.find(os_file_prefix(L""))==0)
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wtarget.erase(0, os_file_prefix(L"").size());
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if(!wtarget.empty() && wtarget[0]!='\\')
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wtarget=L"\\??\\"+wtarget;
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if(!wtarget.empty() && wtarget[target.size()-1]!='\\')
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wtarget+=L"\\";
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if(!CreateDirectoryW(lname.c_str(), NULL) )
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{
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goto cleanup;
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}
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hJunc=CreateFileW(lname.c_str(), GENERIC_WRITE, 0, NULL, OPEN_EXISTING, FILE_FLAG_OPEN_REPARSE_POINT|FILE_FLAG_BACKUP_SEMANTICS, NULL);
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if(hJunc==INVALID_HANDLE_VALUE)
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goto cleanup;
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size_t bsize=sizeof(REPARSE_MOUNTPOINT_DATA_BUFFER) + (wtarget.size()+1) * sizeof(wchar_t)+30;
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buf=new char[bsize];
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memset(buf, 0, bsize);
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REPARSE_MOUNTPOINT_DATA_BUFFER *rb=(REPARSE_MOUNTPOINT_DATA_BUFFER*)buf;
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rb->ReparseTag=IO_REPARSE_TAG_MOUNT_POINT;
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rb->ReparseTargetMaximumLength=(WORD)((wtarget.size()+1)*sizeof(wchar_t));
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rb->ReparseTargetLength=rb->ReparseTargetMaximumLength-1*sizeof(wchar_t);
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rb->ReparseDataLength=rb->ReparseTargetLength+12;
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memcpy(rb->ReparseTarget, wtarget.c_str(), rb->ReparseTargetMaximumLength);
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DWORD bytes_ret;
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if(!DeviceIoControl(hJunc, FSCTL_SET_REPARSE_POINT, rb, rb->ReparseDataLength+REPARSE_MOUNTPOINT_HEADER_SIZE, NULL, 0, &bytes_ret, NULL) )
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{
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goto cleanup;
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}
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ret=true;
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cleanup:
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if(!ret)
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{
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Server->Log("Creating junction failed. Last error="+nconvert((int)GetLastError()), LL_ERROR);
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}
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delete []buf;
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if(hJunc!=INVALID_HANDLE_VALUE)
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CloseHandle(hJunc);
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if(!ret)
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{
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RemoveDirectoryW(lname.c_str());
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}
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return ret;
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}
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#ifndef OS_FUNC_NO_NET
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bool os_lookuphostname(std::string pServer, unsigned int *dest)
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{
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const char* host=pServer.c_str();
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unsigned int addr = inet_addr(host);
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if (addr != INADDR_NONE)
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{
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*dest = addr;
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}
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else
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{
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hostent* hp = gethostbyname(host);
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if (hp != 0)
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{
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in_addr tmp;
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memcpy(&tmp, hp->h_addr, hp->h_length );
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*dest=tmp.s_addr;
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}
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else
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{
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return false;
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}
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}
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return true;
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}
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#endif
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bool os_link_symbolic(const std::wstring &target, const std::wstring &lname)
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{
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if(!os_link_symbolic_junctions(target, lname) )
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return os_link_symbolic_symlink(target, lname);
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return true;
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}
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std::wstring os_file_prefix(std::wstring path)
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{
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if(path.size()>=2 && path[0]=='\\' && path[1]=='\\' )
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return path;
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else
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return L"\\\\?\\"+path;
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}
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bool os_file_truncate(const std::wstring &fn, int64 fsize)
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{
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int fh;
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if( _wsopen_s ( &fh, fn.c_str(), _O_RDWR | _O_CREAT, _SH_DENYNO,
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_S_IREAD | _S_IWRITE ) == 0 )
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{
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if( _chsize_s( fh, fsize ) != 0 )
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{
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_close( fh );
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return false;
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}
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_close( fh );
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return true;
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}
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else
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{
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return false;
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}
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}
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std::string os_strftime(std::string fs)
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{
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time_t rawtime;
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char buffer [100];
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time ( &rawtime );
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struct tm timeinfo;
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localtime_s(&timeinfo, &rawtime);
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strftime (buffer,100,fs.c_str(),&timeinfo);
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std::string r(buffer);
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return r;
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}
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bool os_create_dir_recursive(std::wstring fn)
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{
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if(fn.empty())
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return false;
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bool b=os_create_dir(fn);
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if(!b)
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{
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b=os_create_dir_recursive(ExtractFilePath(fn));
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if(!b)
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return false;
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return os_create_dir(fn);
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}
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else
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{
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return true;
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}
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}
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std::wstring os_get_final_path(std::wstring path)
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{
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#if (_WIN32_WINNT >= 0x0600)
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std::wstring ret;
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if(path.find(L":")==std::string::npos)
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{
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path+=L":";
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}
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if(path.find(L"\\")==std::string::npos)
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{
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path+=L"\\";
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}
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HANDLE hFile = CreateFileW(path.c_str(),
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GENERIC_READ,
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FILE_SHARE_READ,
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NULL,
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OPEN_EXISTING,
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FILE_ATTRIBUTE_NORMAL | FILE_FLAG_BACKUP_SEMANTICS,
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NULL);
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if( hFile==INVALID_HANDLE_VALUE )
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{
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#ifndef OS_FUNC_NO_SERVER
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Server->Log(L"Could not open path in os_get_final_path for \""+path+L"\"", LL_ERROR);
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#endif
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return path;
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}
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DWORD dwBufsize = GetFinalPathNameByHandleW( hFile, NULL, 0, VOLUME_NAME_DOS );
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if(dwBufsize==0)
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{
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#ifndef OS_FUNC_NO_SERVER
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Server->Log(L"Error getting path size in in os_get_final_path error="+convert((int)GetLastError())+L" for \""+path+L"\"", LL_ERROR);
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#endif
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CloseHandle(hFile);
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return path;
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}
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ret.resize(dwBufsize+1);
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DWORD dwRet = GetFinalPathNameByHandleW( hFile, (LPWSTR)ret.c_str(), dwBufsize, VOLUME_NAME_DOS );
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CloseHandle(hFile);
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if(dwRet==0)
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{
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#ifndef OS_FUNC_NO_SERVER
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Server->Log("Error getting path in in os_get_final_path error="+nconvert((int)GetLastError()), LL_ERROR);
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#endif
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}
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else if(dwRet<ret.size())
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{
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ret.resize(dwRet);
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if(ret.find(L"\\\\?\\UNC")==0)
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{
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ret.erase(0, 7);
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ret=L"\\"+ret;
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}
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if(ret.find(L"\\\\?\\")==0)
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{
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ret.erase(0,4);
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}
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/*if(ret.size()>=2 && ret[ret.size()-2]=='.' && ret[ret.size()-1]=='.' )
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{
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ret.resize(ret.size()-2);
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}*/
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return ret;
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}
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else
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{
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#ifndef OS_FUNC_NO_SERVER
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Server->Log("Error getting path (buffer too small) in in os_get_final_path error="+nconvert((int)GetLastError()), LL_ERROR);
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#endif
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}
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return path;
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#else
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return path;
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#endif
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}
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#ifndef OS_FUNC_NO_SERVER
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bool os_rename_file(std::wstring src, std::wstring dst)
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{
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DeleteFileW(dst.c_str());
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BOOL rc=MoveFileW(src.c_str(), dst.c_str());
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#ifdef _DEBUG
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if(rc==0)
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{
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Server->Log("MoveFileW error: "+nconvert((int)GetLastError()), LL_ERROR);
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}
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#endif
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return rc!=0;
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}
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#endif |