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SMBDirectory.cpp
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SMBDirectory.cpp
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/*
* Copyright (C) 2005-2008 Team XBMC
* http://www.xbmc.org
*
* This Program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2, or (at your option)
* any later version.
*
* This Program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with XBMC; see the file COPYING. If not, write to
* the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
* http://www.gnu.org/copyleft/gpl.html
*
*/
/*
* know bugs:
* - when opening a server for the first time with ip adres and the second time
* with server name, access to the server is denied.
* - when browsing entire network, user can't go back one step
* share = smb://, user selects a workgroup, user selects a server.
* doing ".." will go back to smb:// (entire network) and not to workgroup list.
*
* debugging is set to a max of 10 for release builds (see local.h)
*/
#include "system.h"
#include "SMBDirectory.h"
#include "Util.h"
#include "guilib/LocalizeStrings.h"
#include "Application.h"
#include "FileItem.h"
#include "settings/AdvancedSettings.h"
#include "utils/StringUtils.h"
#include "utils/log.h"
#include "utils/URIUtils.h"
#include "threads/SingleLock.h"
#include "PasswordManager.h"
#include <libsmbclient.h>
#if defined(TARGET_DARWIN)
#define XBMC_SMB_MOUNT_PATH "Library/Application Support/XBMC/Mounts/"
#else
#define XBMC_SMB_MOUNT_PATH "/media/xbmc/smb/"
#endif
struct CachedDirEntry
{
unsigned int type;
CStdString name;
};
using namespace XFILE;
using namespace std;
CSMBDirectory::CSMBDirectory(void)
{
#ifdef _LINUX
smb.AddActiveConnection();
#endif
}
CSMBDirectory::~CSMBDirectory(void)
{
#ifdef _LINUX
smb.AddIdleConnection();
#endif
}
bool CSMBDirectory::GetDirectory(const CStdString& strPath, CFileItemList &items)
{
// We accept smb://[[[domain;]user[:password@]]server[/share[/path[/file]]]]
/* samba isn't thread safe with old interface, always lock */
CSingleLock lock(smb);
smb.Init();
/* we need an url to do proper escaping */
CURL url(strPath);
//Separate roots for the authentication and the containing items to allow browsing to work correctly
CStdString strRoot = strPath;
CStdString strAuth;
lock.Leave(); // OpenDir is locked
int fd = OpenDir(url, strAuth);
if (fd < 0)
return false;
URIUtils::AddSlashAtEnd(strRoot);
URIUtils::AddSlashAtEnd(strAuth);
CStdString strFile;
// need to keep the samba lock for as short as possible.
// so we first cache all directory entries and then go over them again asking for stat
// "stat" is locked each time. that way the lock is freed between stat requests
vector<CachedDirEntry> vecEntries;
struct smbc_dirent* dirEnt;
lock.Enter();
while ((dirEnt = smbc_readdir(fd)))
{
CachedDirEntry aDir;
aDir.type = dirEnt->smbc_type;
aDir.name = dirEnt->name;
vecEntries.push_back(aDir);
}
smbc_closedir(fd);
lock.Leave();
for (size_t i=0; i<vecEntries.size(); i++)
{
CachedDirEntry aDir = vecEntries[i];
// We use UTF-8 internally, as does SMB
strFile = aDir.name;
if (!strFile.Equals(".") && !strFile.Equals("..")
&& !strFile.Equals("lost+found")
&& aDir.type != SMBC_PRINTER_SHARE && aDir.type != SMBC_IPC_SHARE)
{
int64_t iSize = 0;
bool bIsDir = true;
int64_t lTimeDate = 0;
bool hidden = false;
if(strFile.Right(1).Equals("$") && aDir.type == SMBC_FILE_SHARE )
continue;
// only stat files that can give proper responses
if ( aDir.type == SMBC_FILE ||
aDir.type == SMBC_DIR )
{
// set this here to if the stat should fail
bIsDir = (aDir.type == SMBC_DIR);
#ifdef TARGET_WINDOWS
struct __stat64 info = {0};
#else
struct stat info = {0};
#endif
if ((m_flags & DIR_FLAG_NO_FILE_INFO)==0 && g_advancedSettings.m_sambastatfiles)
{
// make sure we use the authenticated path wich contains any default username
CStdString strFullName = strAuth + smb.URLEncode(strFile);
lock.Enter();
if( smbc_stat(strFullName.c_str(), &info) == 0 )
{
#ifdef TARGET_WINDOWS
if ((info.st_mode & S_IXOTH))
hidden = true;
#else
char value[20];
// We poll for extended attributes which symbolizes bits but split up into a string. Where 0x02 is hidden and 0x12 is hidden directory.
// According to the libsmbclient.h it's supposed to return 0 if ok, or the length of the string. It seems always to return the length wich is 4
if (smbc_getxattr(strFullName, "system.dos_attr.mode", value, sizeof(value)) > 0)
{
long longvalue = strtol(value, NULL, 16);
if (longvalue & SMBC_DOS_MODE_HIDDEN)
hidden = true;
}
else
CLog::Log(LOGERROR, "Getting extended attributes for the share: '%s'\nunix_err:'%x' error: '%s'", strFullName.c_str(), errno, strerror(errno));
#endif
bIsDir = (info.st_mode & S_IFDIR) ? true : false;
lTimeDate = info.st_mtime;
if(lTimeDate == 0) // if modification date is missing, use create date
lTimeDate = info.st_ctime;
iSize = info.st_size;
}
else
CLog::Log(LOGERROR, "%s - Failed to stat file %s", __FUNCTION__, strFullName.c_str());
lock.Leave();
}
}
FILETIME fileTime, localTime;
LONGLONG ll = Int32x32To64(lTimeDate & 0xffffffff, 10000000) + 116444736000000000ll;
fileTime.dwLowDateTime = (DWORD) (ll & 0xffffffff);
fileTime.dwHighDateTime = (DWORD)(ll >> 32);
FileTimeToLocalFileTime(&fileTime, &localTime);
if (bIsDir)
{
CFileItemPtr pItem(new CFileItem(strFile));
CStdString path(strRoot);
// needed for network / workgroup browsing
// skip if root if we are given a server
if (aDir.type == SMBC_SERVER)
{
/* create url with same options, user, pass.. but no filename or host*/
CURL rooturl(strRoot);
rooturl.SetFileName("");
rooturl.SetHostName("");
path = smb.URLEncode(rooturl);
}
path = URIUtils::AddFileToFolder(path,aDir.name);
URIUtils::AddSlashAtEnd(path);
pItem->SetPath(path);
pItem->m_bIsFolder = true;
pItem->m_dateTime=localTime;
if (hidden)
pItem->SetProperty("file:hidden", true);
items.Add(pItem);
}
else
{
CFileItemPtr pItem(new CFileItem(strFile));
pItem->SetPath(strRoot + aDir.name);
pItem->m_bIsFolder = false;
pItem->m_dwSize = iSize;
pItem->m_dateTime=localTime;
if (hidden)
pItem->SetProperty("file:hidden", true);
items.Add(pItem);
}
}
}
return true;
}
int CSMBDirectory::Open(const CURL &url)
{
smb.Init();
CStdString strAuth;
return OpenDir(url, strAuth);
}
/// \brief Checks authentication against SAMBA share and prompts for username and password if needed
/// \param strAuth The SMB style path
/// \return SMB file descriptor
int CSMBDirectory::OpenDir(const CURL& url, CStdString& strAuth)
{
int fd = -1;
#ifdef TARGET_WINDOWS
int nt_error;
#endif
/* make a writeable copy */
CURL urlIn(url);
CPasswordManager::GetInstance().AuthenticateURL(urlIn);
strAuth = smb.URLEncode(urlIn);
// remove the / or \ at the end. the samba library does not strip them off
// don't do this for smb:// !!
CStdString s = strAuth;
int len = s.length();
if (len > 1 && s.at(len - 2) != '/' &&
(s.at(len - 1) == '/' || s.at(len - 1) == '\\'))
{
s.erase(len - 1, 1);
}
CLog::Log(LOGDEBUG, "%s - Using authentication url %s", __FUNCTION__, s.c_str());
{ CSingleLock lock(smb);
fd = smbc_opendir(s.c_str());
}
while (fd < 0) /* only to avoid goto in following code */
{
CStdString cError;
#ifdef TARGET_WINDOWS
nt_error = smb.ConvertUnixToNT(errno);
// if we have an 'invalid handle' error we don't display the error
// because most of the time this means there is no cdrom in the server's
// cdrom drive.
if (nt_error == NT_STATUS_INVALID_HANDLE)
break;
if (nt_error == NT_STATUS_ACCESS_DENIED)
{
if (m_flags & DIR_FLAG_ALLOW_PROMPT)
RequireAuthentication(urlIn.Get());
break;
}
if (nt_error == NT_STATUS_OBJECT_NAME_NOT_FOUND)
cError.Format(g_localizeStrings.Get(770).c_str(),nt_error);
else
cError = get_friendly_nt_error_msg(nt_error);
#else
if (errno == EACCES)
{
if (m_flags & DIR_FLAG_ALLOW_PROMPT)
RequireAuthentication(urlIn.Get());
break;
}
if (errno == ENODEV || errno == ENOENT)
cError.Format(g_localizeStrings.Get(770).c_str(),errno);
else
cError = strerror(errno);
#endif
if (m_flags & DIR_FLAG_ALLOW_PROMPT)
SetErrorDialog(257, cError.c_str());
break;
}
if (fd < 0)
{
// write error to logfile
#ifdef TARGET_WINDOWS
CLog::Log(LOGERROR, "SMBDirectory->GetDirectory: Unable to open directory : '%s'\nunix_err:'%x' nt_err : '%x' error : '%s'", strAuth.c_str(), errno, nt_error, get_friendly_nt_error_msg(nt_error));
#else
CLog::Log(LOGERROR, "SMBDirectory->GetDirectory: Unable to open directory : '%s'\nunix_err:'%x' error : '%s'", strAuth.c_str(), errno, strerror(errno));
#endif
}
return fd;
}
bool CSMBDirectory::Create(const char* strPath)
{
bool success = true;
CSingleLock lock(smb);
smb.Init();
CURL url(strPath);
CPasswordManager::GetInstance().AuthenticateURL(url);
CStdString strFileName = smb.URLEncode(url);
int result = smbc_mkdir(strFileName.c_str(), 0);
success = (result == 0 || EEXIST == errno);
if(!success)
#ifdef TARGET_WINDOWS
CLog::Log(LOGERROR, "%s - Error( %s )", __FUNCTION__, get_friendly_nt_error_msg(smb.ConvertUnixToNT(errno)));
#else
CLog::Log(LOGERROR, "%s - Error( %s )", __FUNCTION__, strerror(errno));
#endif
return success;
}
bool CSMBDirectory::Remove(const char* strPath)
{
CSingleLock lock(smb);
smb.Init();
CURL url(strPath);
CPasswordManager::GetInstance().AuthenticateURL(url);
CStdString strFileName = smb.URLEncode(url);
int result = smbc_rmdir(strFileName.c_str());
if(result != 0 && errno != ENOENT)
{
#ifdef TARGET_WINDOWS
CLog::Log(LOGERROR, "%s - Error( %s )", __FUNCTION__, get_friendly_nt_error_msg(smb.ConvertUnixToNT(errno)));
#else
CLog::Log(LOGERROR, "%s - Error( %s )", __FUNCTION__, strerror(errno));
#endif
return false;
}
return true;
}
bool CSMBDirectory::Exists(const char* strPath)
{
CSingleLock lock(smb);
smb.Init();
CURL url(strPath);
CPasswordManager::GetInstance().AuthenticateURL(url);
CStdString strFileName = smb.URLEncode(url);
#ifdef TARGET_WINDOWS
SMB_STRUCT_STAT info;
#else
struct stat info;
#endif
if (smbc_stat(strFileName.c_str(), &info) != 0)
return false;
return (info.st_mode & S_IFDIR) ? true : false;
}
CStdString CSMBDirectory::MountShare(const CStdString &smbPath, const CStdString &strType, const CStdString &strName,
const CStdString &strUser, const CStdString &strPass)
{
#ifdef _LINUX
UnMountShare(strType, strName);
CStdString strMountPoint = GetMountPoint(strType, strName);
#if defined(TARGET_DARWIN)
// Create the directory.
CURL::Decode(strMountPoint);
CreateDirectory(strMountPoint, NULL);
// Massage the path.
CStdString smbFullPath = "//";
if (smbFullPath.length() > 0)
{
smbFullPath += strUser;
if (strPass.length() > 0)
smbFullPath += ":" + strPass;
smbFullPath += "@";
}
CStdString newPath = smbPath;
newPath.TrimLeft("/");
smbFullPath += newPath;
// Make the mount command.
CStdStringArray args;
args.push_back("/sbin/mount_smbfs");
args.push_back("-o");
args.push_back("nobrowse");
args.push_back(smbFullPath);
args.push_back(strMountPoint);
// Execute it.
if (CUtil::Command(args))
return strMountPoint;
#else
CUtil::SudoCommand("mkdir -p " + strMountPoint);
CStdString strCmd = "mount -t cifs " + smbPath + " " + strMountPoint +
" -o rw,nobrl,directio";
if (!strUser.IsEmpty())
strCmd += ",user=" + strUser + ",password=" + strPass;
else
strCmd += ",guest";
if (CUtil::SudoCommand(strCmd))
return strMountPoint;
#endif
#endif
return StringUtils::EmptyString;
}
void CSMBDirectory::UnMountShare(const CStdString &strType, const CStdString &strName)
{
#if defined(TARGET_DARWIN)
// Decode the path.
CStdString strMountPoint = GetMountPoint(strType, strName);
CURL::Decode(strMountPoint);
// Make the unmount command.
CStdStringArray args;
args.push_back("/sbin/umount");
args.push_back(strMountPoint);
// Execute command.
CUtil::Command(args);
#elif defined(_LINUX)
CStdString strCmd = "umount " + GetMountPoint(strType, strName);
CUtil::SudoCommand(strCmd);
#endif
}
CStdString CSMBDirectory::GetMountPoint(const CStdString &strType, const CStdString &strName)
{
CStdString strPath = strType + strName;
CURL::Encode(strPath);
#if defined(TARGET_DARWIN)
CStdString str = getenv("HOME");
return str + "/" + XBMC_SMB_MOUNT_PATH + strPath;
#else
return XBMC_SMB_MOUNT_PATH + strPath;
#endif
}