bool CFileSMB::Open(const CURL& url)
{
Close();
// we can't open files like smb://file.f or smb://server/file.f
// if a file matches the if below return false, it can't exist on a samba share.
if (!IsValidFile(url.GetFileName()))
{
CLog::Log(LOGNOTICE,"FileSmb->Open: Bad URL : '%s'",url.GetFileName().c_str());
return false;
}
m_url = url;
// opening a file to another computer share will create a new session
// when opening smb://server xbms will try to find folder.jpg in all shares
// listed, which will create lot's of open sessions.
CStdString strFileName;
m_fd = OpenFile(url, strFileName);
CLog::Log(LOGDEBUG,"CFileSMB::Open - opened %s, fd=%d",url.GetFileName().c_str(), m_fd);
if (m_fd == -1)
{
// write error to logfile
#ifndef _LINUX
int nt_error = smb.ConvertUnixToNT(errno);
CLog::Log(LOGINFO, "FileSmb->Open: Unable to open file : '%s'\nunix_err:'%x' nt_err : '%x' error : '%s'", strFileName.c_str(), errno, nt_error, get_friendly_nt_error_msg(nt_error));
#else
CLog::Log(LOGINFO, "FileSmb->Open: Unable to open file : '%s'\nunix_err:'%x' error : '%s'", strFileName.c_str(), errno, strerror(errno));
#endif
return false;
}
CSingleLock lock(smb);
#ifndef _LINUX
struct __stat64 tmpBuffer = {0};
#else
struct stat tmpBuffer;
#endif
if (smbc_stat(strFileName, &tmpBuffer) < 0)
{
smbc_close(m_fd);
m_fd = -1;
return false;
}
m_fileSize = tmpBuffer.st_size;
int64_t ret = smbc_lseek(m_fd, 0, SEEK_SET);
if ( ret < 0 )
{
smbc_close(m_fd);
m_fd = -1;
return false;
}
// We've successfully opened the file!
return true;
}
int CFileSMB::OpenFile(const CURL &url, CStdString& strAuth)
{
int fd = -1;
smb.Init();
strAuth = GetAuthenticatedPath(url);
CStdString strPath = strAuth;
{
CSingleLock lock(smb);
fd = smbc_open(strPath.c_str(), O_RDONLY, 0);
}
// file open failed, try to open the directory to force authentication
#ifndef _LINUX
if (fd < 0 && smb.ConvertUnixToNT(errno) == NT_STATUS_ACCESS_DENIED)
#else
if (fd < 0 && errno == EACCES)
#endif
{
CURL urlshare(url);
/* just replace the filename with the sharename */
urlshare.SetFileName(url.GetShareName());
CSMBDirectory smbDir;
// TODO: Currently we always allow prompting on files. This may need to
// change in the future as background scanners are more prolific.
smbDir.SetAllowPrompting(true);
fd = smbDir.Open(urlshare);
// directory open worked, try opening the file again
if (fd >= 0)
{
CSingleLock lock(smb);
// close current directory filehandle
// dont need to purge since its the same server and share
smbc_closedir(fd);
// set up new filehandle (as CFileSMB::Open does)
strPath = GetAuthenticatedPath(url);
fd = smbc_open(strPath.c_str(), O_RDONLY, 0);
}
}
if (fd >= 0)
strAuth = strPath;
return fd;
}
bool CFileSMB::Rename(const CURL& url, const CURL& urlnew)
{
smb.Init();
CStdString strFile = GetAuthenticatedPath(url);
CStdString strFileNew = GetAuthenticatedPath(urlnew);
CSingleLock lock(smb);
int result = smbc_rename(strFile.c_str(), strFileNew.c_str());
if(result != 0)
#ifndef _LINUX
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 (result == 0);
}
bool CSmbFile::Delete(const CURL& url)
{
smb.Init();
CStdString strFile = GetAuthenticatedPath(url);
CSingleLock lock(smb);
int result = smbc_unlink(strFile.c_str());
if(result != 0)
#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 (result == 0);
}
int64_t CSmbFile::Seek(int64_t iFilePosition, int iWhence)
{
if (m_fd == -1) return -1;
CSingleLock lock(smb); // Init not called since it has to be "inited" by now
#ifdef TARGET_POSIX
smb.SetActivityTime();
#endif
int64_t pos = smbc_lseek(m_fd, iFilePosition, iWhence);
if ( pos < 0 )
{
#ifdef TARGET_WINDOWS
CLog::Log(LOGERROR, "%s - Error( %s )", __FUNCTION__, get_friendly_nt_error_msg(smb.ConvertUnixToNT(errno)));
#else
CLog::Log(LOGERROR, "%s - Error( %"PRId64", %d, %s )", __FUNCTION__, pos, errno, strerror(errno));
#endif
return -1;
}
return (int64_t)pos;
}
unsigned int CFileSMB::Read(void *lpBuf, int64_t uiBufSize)
{
if (m_fd == -1) return 0;
CSingleLock lock(smb); // Init not called since it has to be "inited" by now
#ifdef _LINUX
smb.SetActivityTime();
#endif
/* work around stupid bug in samba */
/* some samba servers has a bug in it where the */
/* 17th bit will be ignored in a request of data */
/* this can lead to a very small return of data */
/* also worse, a request of exactly 64k will return */
/* as if eof, client has a workaround for windows */
/* thou it seems other servers are affected too */
if( uiBufSize >= 64*1024-2 )
uiBufSize = 64*1024-2;
int bytesRead = smbc_read(m_fd, lpBuf, (int)uiBufSize);
if ( bytesRead < 0 && errno == EINVAL )
{
CLog::Log(LOGERROR, "%s - Error( %d, %d, %s ) - Retrying", __FUNCTION__, bytesRead, errno, strerror(errno));
bytesRead = smbc_read(m_fd, lpBuf, (int)uiBufSize);
}
if ( bytesRead < 0 )
{
#ifndef _LINUX
CLog::Log(LOGERROR, "%s - Error( %s )", __FUNCTION__, get_friendly_nt_error_msg(smb.ConvertUnixToNT(errno)));
#else
CLog::Log(LOGERROR, "%s - Error( %d, %d, %s )", __FUNCTION__, bytesRead, errno, strerror(errno));
#endif
return 0;
}
return (unsigned int)bytesRead;
}
