private static FtpListItem ParseVaxList(string buf, FtpCapability capabilities)
{
string regex =
@"(?<name>.+)\.(?<extension>.+);(?<version>\d+)\s+" +
@"(?<size>\d+)\s+" +
@"(?<modify>\d+-\w+-\d+\s+\d+:\d+)";
Match m;
if ((m = Regex.Match(buf, regex)).Success)
{
FtpListItem item = new FtpListItem();
item.m_name = string.Format("{0}.{1};{2}",
m.Groups["name"].Value,
m.Groups["extension"].Value,
m.Groups["version"].Value);
if (m.Groups["extension"].Value.ToUpper() == "DIR")
item.m_type = FtpFileSystemObjectType.Directory;
else
item.m_type = FtpFileSystemObjectType.File;
if (!long.TryParse(m.Groups["size"].Value, out item.m_size))
item.m_size = -1;
if (
!DateTime.TryParse(m.Groups["modify"].Value, CultureInfo.InvariantCulture,
DateTimeStyles.AssumeLocal, out item.m_modified))
item.m_modified = DateTime.MinValue;
return item;
}
return null;
}
/// <summary>
/// Parses IIS DOS format listings
/// </summary>
/// <param name="buf">A line from the listing</param>
/// <param name="capabilities">Server capabilities</param>
/// <returns>FtpListItem if the item is able to be parsed</returns>
private static FtpListItem ParseDosList(string buf, FtpCapability capabilities)
{
FtpListItem item = new FtpListItem();
string[] datefmt = new string[]
{
"MM-dd-yy hh:mmtt",
"MM-dd-yyyy hh:mmtt"
};
Match m;
// directory
if (
(m =
Regex.Match(buf, @"(?<modify>\d+-\d+-\d+\s+\d+:\d+\w+)\s+<DIR>\s+(?<name>.*)$", RegexOptions.IgnoreCase))
.Success)
{
DateTime modify;
item.Type = FtpFileSystemObjectType.Directory;
item.Name = m.Groups["name"].Value;
//if (DateTime.TryParse(m.Groups["modify"].Value, CultureInfo.InvariantCulture, DateTimeStyles.AssumeUniversal, out modify))
if (DateTime.TryParseExact(m.Groups["modify"].Value, datefmt, CultureInfo.InvariantCulture,
DateTimeStyles.AssumeUniversal, out modify))
item.Modified = modify;
}
// file
else if (
(m =
Regex.Match(buf, @"(?<modify>\d+-\d+-\d+\s+\d+:\d+\w+)\s+(?<size>\d+)\s+(?<name>.*)$",
RegexOptions.IgnoreCase)).Success)
{
DateTime modify;
long size;
item.Type = FtpFileSystemObjectType.File;
item.Name = m.Groups["name"].Value;
if (long.TryParse(m.Groups["size"].Value, out size))
item.Size = size;
//if (DateTime.TryParse(m.Groups["modify"].Value, CultureInfo.InvariantCulture, DateTimeStyles.AssumeUniversal, out modify))
if (DateTime.TryParseExact(m.Groups["modify"].Value, datefmt, CultureInfo.InvariantCulture,
DateTimeStyles.AssumeUniversal, out modify))
item.Modified = modify;
}
else
return null;
return item;
}
/// <summary>
/// Parses MLS* format listings
/// </summary>
/// <param name="buf">A line from the listing</param>
/// <param name="capabilities">Server capabilities</param>
/// <returns>FtpListItem if the item is able to be parsed</returns>
private static FtpListItem ParseMachineList(string buf, FtpCapability capabilities)
{
FtpListItem item = new FtpListItem();
Match m;
if (!(m = Regex.Match(buf, "type=(?<type>.+?);", RegexOptions.IgnoreCase)).Success)
return null;
switch (m.Groups["type"].Value.ToLower())
{
case "dir":
case "cdir":
case "pdir":
item.Type = FtpFileSystemObjectType.Directory;
break;
case "file":
item.Type = FtpFileSystemObjectType.File;
break;
// These are not supported for now.
case "link":
case "device":
default:
return null;
}
if ((m = Regex.Match(buf, "; (?<name>.*)$", RegexOptions.IgnoreCase)).Success)
item.Name = m.Groups["name"].Value;
else // if we can't parse the file name there is a problem.
return null;
if ((m = Regex.Match(buf, "modify=(?<modify>.+?);", RegexOptions.IgnoreCase)).Success)
item.Modified = m.Groups["modify"].Value.GetFtpDate(DateTimeStyles.AssumeUniversal);
if ((m = Regex.Match(buf, "created?=(?<create>.+?);", RegexOptions.IgnoreCase)).Success)
item.Created = m.Groups["create"].Value.GetFtpDate(DateTimeStyles.AssumeUniversal);
if ((m = Regex.Match(buf, @"size=(?<size>\d+);", RegexOptions.IgnoreCase)).Success)
{
long size;
if (long.TryParse(m.Groups["size"].Value, out size))
item.Size = size;
}
if ((m = Regex.Match(buf, @"unix.mode=(?<mode>\d+);", RegexOptions.IgnoreCase)).Success)
{
if (m.Groups["mode"].Value.Length == 4)
{
item.SpecialPermissions = (FtpSpecialPermissions) int.Parse(m.Groups["mode"].Value[0].ToString());
item.OwnerPermissions = (FtpPermission) int.Parse(m.Groups["mode"].Value[1].ToString());
item.GroupPermissions = (FtpPermission) int.Parse(m.Groups["mode"].Value[2].ToString());
item.OthersPermissions = (FtpPermission) int.Parse(m.Groups["mode"].Value[3].ToString());
}
else if (m.Groups["mode"].Value.Length == 3)
{
item.OwnerPermissions = (FtpPermission) int.Parse(m.Groups["mode"].Value[0].ToString());
item.GroupPermissions = (FtpPermission) int.Parse(m.Groups["mode"].Value[1].ToString());
item.OthersPermissions = (FtpPermission) int.Parse(m.Groups["mode"].Value[2].ToString());
}
}
return item;
}
/// <summary>
/// Parses LIST format listings
/// </summary>
/// <param name="buf">A line from the listing</param>
/// <param name="capabilities">Server capabilities</param>
/// <returns>FtpListItem if the item is able to be parsed</returns>
private static FtpListItem ParseUnixList(string buf, FtpCapability capabilities)
{
string regex =
@"(?<permissions>[dslrwx-]+)\s+" +
@"(?<objectcount>\d+)\s+" +
@"(?<user>.+?)\s+" +
@"(?<group>.+?)\s+" +
@"(?<size>\d+)\s+" +
@"(?<modify>\w+\s+\d+\s+\d+:\d+|\w+\s+\d+\s+\d+|\d+\-\d+\-\d+\-\d+:\d+)\s+" +
@"(?<name>.*)$";
FtpListItem item = new FtpListItem();
Match m;
if (!(m = Regex.Match(buf, regex, RegexOptions.IgnoreCase)).Success)
return null;
// if this field is missing we can't determine
// what the object is.
if (m.Groups["permissions"].Value.Length == 0)
return null;
switch (m.Groups["permissions"].Value[0])
{
case 'd':
item.Type = FtpFileSystemObjectType.Directory;
break;
case '-':
case 's':
item.Type = FtpFileSystemObjectType.File;
break;
case 'l':
item.Type = FtpFileSystemObjectType.Link;
break;
default:
return null;
}
// if we can't determine a file name then
// we are not considering this a successful parsing operation.
if (m.Groups["name"].Value.Length < 1)
return null;
item.Name = m.Groups["name"].Value;
switch (item.Type)
{
case FtpFileSystemObjectType.Directory:
// ignore these...
if (item.Name == "." || item.Name == "..")
return null;
break;
case FtpFileSystemObjectType.Link:
if (!item.Name.Contains(" -> "))
return null;
item.LinkTarget = item.Name.Remove(0, item.Name.IndexOf("-> ") + 3);
item.Name = item.Name.Remove(item.Name.IndexOf(" -> "));
break;
}
////
// Ignore the Modify times sent in LIST format for files
// when the server has support for the MDTM command
// because they will never be as accurate as what can be had
// by using the MDTM command. MDTM does not work on directories
// so if a modify time was parsed from the listing we will try
// to convert it to a DateTime object and use it for directories.
////
if (((capabilities & FtpCapability.MDTM) != FtpCapability.MDTM ||
item.Type == FtpFileSystemObjectType.Directory) && m.Groups["modify"].Value.Length > 0)
item.Modified = m.Groups["modify"].Value.GetFtpDate(DateTimeStyles.AssumeLocal);
if (m.Groups["size"].Value.Length > 0)
{
long size;
if (long.TryParse(m.Groups["size"].Value, out size))
item.Size = size;
}
if (m.Groups["permissions"].Value.Length > 0)
{
Match perms = Regex.Match(m.Groups["permissions"].Value,
@"[\w-]{1}(?<owner>[\w-]{3})(?<group>[\w-]{3})(?<others>[\w-]{3})",
RegexOptions.IgnoreCase);
if (perms.Success)
{
if (perms.Groups["owner"].Value.Length == 3)
{
if (perms.Groups["owner"].Value[0] == 'r')
item.OwnerPermissions |= FtpPermission.Read;
if (perms.Groups["owner"].Value[1] == 'w')
item.OwnerPermissions |= FtpPermission.Write;
if (perms.Groups["owner"].Value[2] == 'x' || perms.Groups["owner"].Value[2] == 's')
item.OwnerPermissions |= FtpPermission.Execute;
if (perms.Groups["owner"].Value[2] == 's' || perms.Groups["owner"].Value[2] == 'S')
item.SpecialPermissions |= FtpSpecialPermissions.SetUserID;
}
if (perms.Groups["group"].Value.Length == 3)
{
if (perms.Groups["group"].Value[0] == 'r')
item.GroupPermissions |= FtpPermission.Read;
if (perms.Groups["group"].Value[1] == 'w')
item.GroupPermissions |= FtpPermission.Write;
if (perms.Groups["group"].Value[2] == 'x' || perms.Groups["group"].Value[2] == 's')
item.GroupPermissions |= FtpPermission.Execute;
if (perms.Groups["group"].Value[2] == 's' || perms.Groups["group"].Value[2] == 'S')
item.SpecialPermissions |= FtpSpecialPermissions.SetGroupID;
}
if (perms.Groups["others"].Value.Length == 3)
{
if (perms.Groups["others"].Value[0] == 'r')
item.OthersPermissions |= FtpPermission.Read;
if (perms.Groups["others"].Value[1] == 'w')
item.OthersPermissions |= FtpPermission.Write;
if (perms.Groups["others"].Value[2] == 'x' || perms.Groups["others"].Value[2] == 't')
item.OthersPermissions |= FtpPermission.Execute;
if (perms.Groups["others"].Value[2] == 't' || perms.Groups["others"].Value[2] == 'T')
item.SpecialPermissions |= FtpSpecialPermissions.Sticky;
}
}
}
return item;
}
private static void PostParse(string path, string buf, Parser parser, FtpListItem item)
{
// if this is a vax/openvms file listing
// there are no slashes in the path name
if (parser == (ParseVaxList))
item.FullName = path + item.Name;
else
{
//FtpTrace.WriteLine(item.Name);
// remove globbing/wildcard from path
if (path.GetFtpFileName().Contains("*"))
path = path.GetFtpDirectoryName();
item.FullName = path.GetFtpPath(item.Name); //.GetFtpPathWithoutGlob();
// if a link target is set and it doesn't include an absolute path
// then try to resolve it.
if (item.LinkTarget != null && !item.LinkTarget.StartsWith("/"))
item.LinkTarget =
path.GetFtpPath(item.LinkTarget.StartsWith("./")
? item.LinkTarget.Remove(0, 2)
: item.LinkTarget);
}
item.Input = buf;
}
