private void SetPermission(IFile file, bool setSubFiles = false, bool setParentFiles = false)
{
if (setParentFiles)
{
file.ClearPermission();
SetPermission(file);
}
if (_group.Rules.ContainsKey(file.VirtualPath))
{
file.Permission = _group.Rules[file.VirtualPath];
}
else
{
file.Permission = file.ParentDirectory.Permission;
}
if (setSubFiles)
{
VDirectory f = file as VDirectory;
if (f == null)
{
return;
}
foreach (var s in f.SubFiles)
{
if (_group.Rules.ContainsKey(s.VirtualPath))
{
s.Permission = _group.Rules[s.VirtualPath];
}
else
{
s.Permission = f.Permission;
}
}
}
}
/// <summary>
/// 获取文件夹
/// </summary>
/// <param name="vdir">虚拟路径</param>
/// <returns>文件夹信息，如不存在则为null</returns>
public DirectoryInfo GetDirectory(string vdir)
{
string pre = VPath.NormalizeFilename(vdir);
VDirectory dir = Get(pre, true) as VDirectory;
return(dir == null ? null : dir.RealDirectory);
}
public VirtualFileSystem(FtpConfig config, FtpUserGroup group, string rootpath = null)
{
_config = config;
_group = group;
if (!string.IsNullOrEmpty(rootpath))
{
_rootPath = rootpath;
}
else if (!string.IsNullOrEmpty(group.HomeDir))
{
_rootPath = group.HomeDir;
}
else
{
_rootPath = config.HomeDir;
}
_rootDirectory = new VDirectory(null, new FilePermission("r-xr-xr-x"), _rootPath, "");
_currentDirectory = _rootDirectory;
_currentDirectory.Refresh();
AddGroupLinks(); //FIXED:应在刷新后加入链接
_currentDirectory.Refresh();
SetPermission(_currentDirectory, true);
}
/// <summary>
/// 获取一个虚拟文件实体
/// </summary>
/// <param name="vdir">虚拟路径</param>
/// <param name="onlyFindDir">只寻找文件夹</param>
/// <returns>虚拟文件，如不存在则为null</returns>
private IFile Get(string vdir, bool onlyFindDir = false)
{
IFile currentPosition = _rootDirectory;
if (!vdir.Trim().StartsWith("/"))
{
currentPosition = _currentDirectory;
}
if (vdir == "")
{
return(currentPosition);
}
string pre;
string[] dirs = vdir.Split(new char[] { '/', '\\' }, StringSplitOptions.RemoveEmptyEntries);
for (int i = 0; i < dirs.Length; i++)
{
pre = dirs[i].Trim();
if (pre == "..")
{
currentPosition = currentPosition.ParentDirectory;
}
else
{
if (currentPosition.IsDirectory)
{
VDirectory temp = currentPosition as VDirectory;
if (temp == null || !temp.Enumerate().Contains(pre))
{
return(null);
}
if (i >= dirs.Length - 1) //找到了最后一层，寻找文件
{
if (onlyFindDir)
{
currentPosition = temp.SubFiles.Find((t) => (t.Name == pre) && (t.IsDirectory));
return(currentPosition ?? _rootDirectory);
}
//Find:如果找到与指定谓词定义的条件匹配的第一个元素，则为该元素；否则为类型 T 的默认值。
currentPosition = temp.SubFiles.Find((t) => (t.Name == pre) && (!t.IsDirectory)) ??
temp.SubFiles.Find((t) => (t.Name == pre) && (t.IsDirectory));
}
else //不是最后一层，找子目录
{
currentPosition = temp.SubFiles.Find((t) => (t.Name == pre) && (t.IsDirectory));
}
if (currentPosition == null)
{
return(null);
}
}
}
SetPermission(currentPosition);
currentPosition.Refresh();
}
SetPermission(currentPosition, true, true);
return(!currentPosition.Permission.CanRead ? null : currentPosition);
}
/// <summary>
/// 切换当前目录
/// </summary>
/// <param name="vPath">虚拟路径</param>
/// <param name="createDirIfNotExists">目录不存在时，是否创建目录</param> //MARK: WARNING: may cause Security Issue!
/// <returns></returns>
public bool ChangeCurrentDirectory(string vPath, bool createDirIfNotExists = false)
{
string pre = VPath.NormalizeFilename(vPath, true);
if (pre == "..")
{
_currentDirectory = _currentDirectory.ParentDirectory;
}
else if (pre == "/") //FIXED:
{
_currentDirectory = _rootDirectory;
}
else
{
VDirectory v;
if (pre.StartsWith("/", StringComparison.OrdinalIgnoreCase)) //绝对虚拟路径
{
v = Get(pre, true) as VDirectory;
}
else //相对虚拟路径
{
v = _currentDirectory.SubFiles.Find((t) => t.IsDirectory && t.Name == pre) as VDirectory;
}
if (v == null)
{
if (!createDirIfNotExists)
{
return(false);
}
//ADDED:
FileError fileError = CreateDirectory(pre);
if (fileError == FileError.None)
{
var dir = Get(pre, true) as VDirectory;
if (dir != null)
{
v = dir;
}
else
{
return(false);
}
}
else
{
return(false);
}
}
_currentDirectory = v;
}
_currentDirectory.Refresh();
SetPermission(_currentDirectory, true);
return(true);
}
public VFile(VDirectory parent, FilePermission permission, string realPath, string name)
{
ParentDirectory = parent;
_permission = permission ?? ParentDirectory.Permission;
try
{
Name = name ?? Path.GetFileName(realPath);
RealFile = new FileInfo(realPath);
}
catch (Exception e)
{
//throw e;
RealFile = null;
}
}
/// <summary>
/// 虚拟文件夹
/// </summary>
/// <param name="permission">权限</param>
/// <param name="parent">父目录</param>
/// <param name="name">文件夹名</param>
/// <param name="realPath">真实路径</param>
public VDirectory(VDirectory parent, FilePermission permission, string realPath, string name = null)
{
ParentDirectory = parent;
_permission = permission ?? ParentDirectory.Permission;
try
{
Name = name ?? VPath.GetFileName(realPath);
if (ParentDirectory == null || ParentDirectory == this)
{
VirtualPath = "/";
}
else
{
VirtualPath = VPath.Combine(ParentDirectory.VirtualPath, Name);
}
RealDirectory = new DirectoryInfo(realPath);
}
catch (Exception e)
{
//throw e;
RealDirectory = null;
}
}
private List <string> GenerateList(IEnumerable <IFile> list)
{
List <string> fileList = new List <string>();
DateTime now = DateTime.Now;
foreach (var f in list)
{
if (!f.Permission.CanRead)
{
continue;
}
//参考格式
//drwxrwxrwx 1 user group 0 Nov 27 00:13 上传
StringBuilder sb = new StringBuilder();
DateTime editDate;
if (f.IsDirectory)
{
VDirectory vf = (VDirectory)f;
editDate = vf.RealDirectory.LastWriteTime;
sb.Append('d').Append(f.Permission.ToString()); //文件权限10位
sb.Append(" 1 "); //1空格 子文件个数2位 1空格
sb.Append(string.Format("{0,-8}", _config.Owner.PadRight(8))).Append(' '); //文件所有者8位 1空格
sb.Append(string.Format("{0,-8}", _config.OwnerGroup.PadRight(8))).Append(' '); //文件所有者8位 1空格
//sb.Append(_config.Owner.Substring(0, 8).PadRight(8)).Append(' '); //文件所有者8位 1空格
//sb.Append(_config.OwnerGroup.Substring(0, 8).PadRight(8)).Append(' '); //文件所有组8位 1空格
sb.Append(" 0 "); //文件大小>=8位，文件夹通常为0或4096 1空格
sb.Append(editDate < now.Subtract(TimeSpan.FromDays(180)) //文件修改日期5位，1空格，时间5位，1空格
? editDate.ToString("MMM dd yyyy", CultureInfo.InvariantCulture)
: editDate.ToString("MMM dd HH:mm", CultureInfo.InvariantCulture))
.Append(' ');
sb.Append(f.Name);
}
else
{
VFile vf = (VFile)f;
editDate = vf.RealFile.LastWriteTime;
//string.Format("{0,-50}", theObj);//格式化成50个字符，原字符左对齐，不足则补空格
//string.Format("{0,50}", theObj);//格式化成50个字符，原字符右对齐，不足则补空格
sb.Append('-').Append(f.Permission.ToString()); //文件权限10位
sb.Append(" 1 "); //1空格 子文件个数2位 1空格
sb.Append(string.Format("{0,-8}", _config.Owner.PadRight(8))).Append(' '); //文件所有者8位 1空格
sb.Append(string.Format("{0,-8}", _config.OwnerGroup.PadRight(8))).Append(' '); //文件所有者8位 1空格
//sb.Append(_config.OwnerGroup.Substring(0, 8).PadRight(8)).Append(' '); //文件所有组8位 1空格
string length = vf.RealFile.Length.ToString(CultureInfo.InvariantCulture);
if (length.Length < 8)
{
length = length.PadLeft(8);
}
sb.Append(length).Append(' '); //文件大小>=8位 1空格
sb.Append(editDate < now.Subtract(TimeSpan.FromDays(180)) //文件修改日期5位，1空格，时间5位，1空格
? editDate.ToString("MMM dd yyyy", CultureInfo.InvariantCulture)
: editDate.ToString("MMM dd HH:mm", CultureInfo.InvariantCulture))
.Append(' ');
sb.Append(f.Name);
}
fileList.Add(sb.ToString());
}
return(fileList);
}
/* perm权限设置
* perm="a" / "c" / "d" / "e" / "f" / "l" / "m" / "p" / "r" / "w"
* a:文件，APPE追加许可
* c:文件夹，STOR STOU APPE存储许可（不能已存在）
* d:全部，RMD DELE删除许可
* e:文件夹，CWD PWD CDUP目录切换许可
* f:全部，RNFR重命名许可
* l:文件夹，LIST NLST MLSD列目录许可
* m:文件夹，MKD建目录许可
* p:文件夹，DELE文件夹内容删除许可
* r:文件，RTER取得许可
* w:文件，STOR存储许可
*/
/// <summary>
/// 取得格式化的文件列表
/// <para>MLSD in RFC 3659</para>
/// </summary>
/// <param name="vPath"></param>
/// <returns></returns>
public List <string> MachineListFiles(string vPath = null)
{
VDirectory dir;
if (string.IsNullOrEmpty(vPath))
{
dir = _currentDirectory;
SetPermission(dir, true);
}
else
{
dir = Get(VPath.NormalizeFilename(vPath), true) as VDirectory ?? _currentDirectory;
}
dir.Refresh(); //FIXED:目录及时更新
List <string> fileList = new List <string>();
DateTime now = DateTime.Now;
foreach (var f in dir.SubFiles)
{
if (!f.Permission.CanRead)
{
continue;
}
//参考格式
//type=dir;modify=20141218151753;perm=el; 新建文件夹
DateTime editDate;
StringBuilder sb = new StringBuilder();
if (f.IsDirectory)
{
VDirectory vf = (VDirectory)f;
editDate = vf.RealDirectory.LastWriteTime.ToUniversalTime();
sb.Append("Type=dir;"); //type类型
sb.Append("modify=").Append(editDate.ToString("yyyyMMddHHmmss")).Append(';'); //modify修改时间
//sb.Append("size=").Append("0"); //文件夹没有size
//-RFC 3659- -7.5.5- Its value is always an unordered sequence of alphabetic characters. 意味着权限字母不用排序
sb.Append("perm=el"); //perm权限，具体见上
if (vf.Permission.CanWrite)
{
sb.Append("cm");
}
if (vf.Permission.GroupCanWrite)
{
sb.Append("dfp");
}
sb.Append("; ");
sb.Append(f.Name);
}
else
{
VFile vf = (VFile)f;
editDate = vf.RealFile.LastWriteTime.ToUniversalTime();
//参考格式
//type=file;modify=20140628041312;size=761344; Server.exe
sb.Append("type=file;"); //type类型
sb.Append("modify=").Append(editDate.ToString("yyyyMMddHHmmss")).Append(';'); //modify修改时间
sb.Append("size=").Append(vf.RealFile.Length).Append(';'); //size大小
//-RFC 3659- -7.5.5- Its value is always an unordered sequence of alphabetic characters. 意味着权限字母不用排序
sb.Append("perm=r"); //perm权限，具体见上
if (vf.Permission.CanWrite)
{
//sb.Append("cm");
}
if (vf.Permission.GroupCanWrite)
{
sb.Append("adfw");
}
sb.Append("; ");
sb.Append(f.Name);
}
fileList.Add(sb.ToString());
}
return(fileList);
}
