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- parse the longname to get the file type (only currently works for Net_SFTP::rawlist())

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git-svn-id: http://phpseclib.svn.sourceforge.net/svnroot/phpseclib/trunk@140 21d32557-59b3-4da0-833f-c5933fad653e
This commit is contained in:
Jim Wigginton 2011-01-16 16:25:46 +00:00
parent bf49338fa9
commit 029b61bc5e
1 changed files with 59 additions and 3 deletions
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62
phpseclib/Net/SFTP.php
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@ -289,11 +289,20 @@ class Net_SFTP extends Net_SSH2 {
0x00000008 => 'NET_SFTP_OPEN_CREATE',
0x00000010 => 'NET_SFTP_OPEN_TRUNCATE'
);
// http://tools.ietf.org/html/draft-ietf-secsh-filexfer-04#section-5.2
// see Net_SFTP::_parseLongname() for an explanation
$this->file_types = array(
1 => 'NET_SFTP_TYPE_REGULAR',
2 => 'NET_SFTP_TYPE_DIRECTORY',
3 => 'NET_SFTP_TYPE_SYMLINK',
4 => 'NET_SFTP_TYPE_SPECIAL'
);
$this->_define_array(
$this->packet_types,
$this->status_codes,
$this->attributes,
$this->open_flags
$this->open_flags,
$this->file_types
);
}
@ -491,6 +500,11 @@ class Net_SFTP extends Net_SSH2 {
$this->_string_shift($response, 4); // skip over the count - it should be 1, anyway
extract(unpack('Nlength', $this->_string_shift($response, 4)));
$realpath = $this->_string_shift($response, $length);
// the following is SFTPv3 only code. see Net_SFTP::_parseLongname() for more information.
// per the above comment, this is a shot in the dark that, on most servers, won't help us in determining
// the file type for Net_SFTP::stat() and Net_SFTP::lstat() but it's worth a shot.
//extract(unpack('Nlength', $this->_string_shift($response, 4)));
//$this->fileType = $this->_parseLongname($this->_string_shift($response, $length));
break;
case NET_SFTP_STATUS:
extract(unpack('Nstatus/Nlength', $this->_string_shift($response, 8)));
@ -647,12 +661,16 @@ class Net_SFTP extends Net_SSH2 {
extract(unpack('Nlength', $this->_string_shift($response, 4)));
$shortname = $this->_string_shift($response, $length);
extract(unpack('Nlength', $this->_string_shift($response, 4)));
$this->_string_shift($response, $length); // SFTPv4+ drop this field - the "longname" field
$longname = $this->_string_shift($response, $length);
$attributes = $this->_parseAttributes($response); // we also don't care about the attributes
if (!$raw) {
$contents[] = $shortname;
} else {
$contents[$shortname] = $attributes;
$fileType = $this->_parseLongname($longname);
if ($fileType) {
$contents[$shortname]['type'] = $fileType;
}
}
// SFTPv6 has an optional boolean end-of-list field, but we'll ignore that, since the
// final SSH_FXP_STATUS packet should tell us that, already.
@ -785,7 +803,11 @@ class Net_SFTP extends Net_SSH2 {
$response = $this->_get_sftp_packet();
switch ($this->packet_type) {
case NET_SFTP_ATTRS:
return $this->_parseAttributes($response);
$attributes = $this->_parseAttributes($response);
if ($this->fileType) {
$attributes['type'] = $this->fileType;
}
return $attributes;
case NET_SFTP_STATUS:
extract(unpack('Nstatus/Nlength', $this->_string_shift($response, 8)));
$this->sftp_errors[] = $this->status_codes[$status] . ': ' . $this->_string_shift($response, $length);
@ -1353,6 +1375,40 @@ class Net_SFTP extends Net_SSH2 {
return $attr;
}
/**
* Parse Longname
*
* SFTPv3 doesn't provide any easy way of identifying a file type. You could try to open
* a file as a directory and see if an error is returned or you could try to parse the
* SFTPv3-specific longname field of the SSH_FXP_NAME packet. That's what this function does.
* The result is returned using the
* {@link http://tools.ietf.org/html/draft-ietf-secsh-filexfer-04#section-5.2 SFTPv4 type constants}.
*
* If the longname is in an unrecognized format bool(false) is returned.
*
* @param String $longname
* @return Mixed
* @access private
*/
function _parseLongname($longname)
{
// http://en.wikipedia.org/wiki/Unix_file_types
if (preg_match('#^[^/]([r-][w-][x-]){3}#', $longname)) {
switch ($longname[0]) {
case '-':
return NET_SFTP_TYPE_REGULAR;
case 'd':
return NET_SFTP_TYPE_DIRECTORY;
case 'l':
return NET_SFTP_TYPE_SYMLINK;
default:
return NET_SFTP_TYPE_SPECIAL;
}
}
return false;
}
/**
* Sends SFTP Packets
*