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Merge pull request #10 from phpseclib/master

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Hans-Jürgen Petrich 2013-03-07 22:58:02 -08:00
commit 4ae3cc295b
1 changed files with 96 additions and 73 deletions
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169
phpseclib/Net/SFTP.php
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@ -225,15 +225,6 @@ class Net_SFTP extends Net_SSH2 {
*/
var $sftp_errors = array();
/**
* File Type
*
* @see Net_SFTP::_parseLongname()
* @var Integer
* @access private
*/
var $fileType = 0;
/**
* Directory Cache
*
@ -338,7 +329,14 @@ class Net_SFTP extends Net_SSH2 {
1 => 'NET_SFTP_TYPE_REGULAR',
2 => 'NET_SFTP_TYPE_DIRECTORY',
3 => 'NET_SFTP_TYPE_SYMLINK',
4 => 'NET_SFTP_TYPE_SPECIAL'
4 => 'NET_SFTP_TYPE_SPECIAL',
5 => 'NET_SFTP_TYPE_UNKNOWN',
// the followin types were first defined for use in SFTPv5+
// http://tools.ietf.org/html/draft-ietf-secsh-filexfer-05#section-5.2
6 => 'NET_SFTP_TYPE_SOCKET',
7 => 'NET_SFTP_TYPE_CHAR_DEVICE',
8 => 'NET_SFTP_TYPE_BLOCK_DEVICE',
9 => 'NET_SFTP_TYPE_FIFO'
);
$this->_define_array(
$this->packet_types,
@ -486,7 +484,8 @@ class Net_SFTP extends Net_SSH2 {
* @param optional Integer $status
* @access public
*/
function _logError($response, $status = -1) {
function _logError($response, $status = -1)
{
if ($status == -1) {
extract(unpack('Nstatus', $this->_string_shift($response, 4)));
}
@ -586,6 +585,11 @@ class Net_SFTP extends Net_SSH2 {
return true;
}
// we could do a stat on the alleged $dir to see if it's a directory but that doesn't tell us
// the currently logged in user has the appropriate permissions or not. maybe you could see if
// the file's uid / gid match the currently logged in user's uid / gid but how there's no easy
// way to get those with SFTP
if (!$this->_send_sftp_packet(NET_SFTP_OPENDIR, pack('Na*', strlen($dir), $dir))) {
return false;
}
@ -715,21 +719,21 @@ class Net_SFTP extends Net_SSH2 {
$shortname = $this->_string_shift($response, $length);
extract(unpack('Nlength', $this->_string_shift($response, 4)));
$longname = $this->_string_shift($response, $length);
$attributes = $this->_parseAttributes($response); // we also don't care about the attributes
$fileType = $this->_parseLongname($longname);
$attributes = $this->_parseAttributes($response);
if (!isset($attributes['type'])) {
$fileType = $this->_parseLongname($longname);
if ($fileType) {
$attributes['type'] = $fileType;
}
}
if (!$raw) {
$contents[] = $shortname;
} else {
$contents[$shortname] = $attributes;
}
if ($fileType) {
if ($fileType == NET_SFTP_TYPE_DIRECTORY && ($shortname != '.' && $shortname != '..')) {
$this->_save_dir($dir . '/' . $shortname);
}
if ($raw) {
$contents[$shortname]['type'] = $fileType;
}
if (isset($attributes['type']) && $attributes['type'] == NET_SFTP_TYPE_DIRECTORY && ($shortname != '.' && $shortname != '..')) {
$this->_save_dir($dir . '/' . $shortname);
}
// SFTPv6 has an optional boolean end-of-list field, but we'll ignore that, since the
// final SSH_FXP_STATUS packet should tell us that, already.
@ -882,6 +886,9 @@ class Net_SFTP extends Net_SSH2 {
if ($stat === false) {
return false;
}
if (isset($stat['type'])) {
return $stat;
}
$pwd = $this->pwd;
$stat['type'] = $this->chdir($filename) ?
@ -913,10 +920,14 @@ class Net_SFTP extends Net_SSH2 {
}
$lstat = $this->_stat($filename, NET_SFTP_LSTAT);
$stat = $this->_stat($filename, NET_SFTP_STAT);
if ($stat === false) {
if ($lstat === false) {
return false;
}
if (isset($lstat['type'])) {
return $lstat;
}
$stat = $this->_stat($filename, NET_SFTP_STAT);
if ($lstat != $stat) {
return array_merge($lstat, array('type' => NET_SFTP_TYPE_SYMLINK));
@ -953,11 +964,7 @@ class Net_SFTP extends Net_SSH2 {
$response = $this->_get_sftp_packet();
switch ($this->packet_type) {
case NET_SFTP_ATTRS:
$attributes = $this->_parseAttributes($response);
if ($this->fileType) {
$attributes['type'] = $this->fileType;
}
return $attributes;
return $this->_parseAttributes($response);
case NET_SFTP_STATUS:
$this->_logError($response);
return false;
@ -967,33 +974,6 @@ class Net_SFTP extends Net_SSH2 {
return false;
}
/**
* Attempt to identify the file type
*
* @param String $path
* @param Array $stat
* @param Array $lstat
* @return Integer
* @access private
*/
function _identify_type($path, $stat1, $stat2)
{
$stat1 = $this->_stat($path, $stat1);
$stat2 = $this->_stat($path, $stat2);
if ($stat1 != $stat2) {
return array_merge($stat1, array('type' => NET_SFTP_TYPE_SYMLINK));
}
$pwd = $this->pwd;
$stat1['type'] = $this->chdir($path) ?
NET_SFTP_TYPE_DIRECTORY :
NET_SFTP_TYPE_REGULAR;
$this->pwd = $pwd;
return $stat1;
}
/**
* Returns the file size, in bytes, or false, on failure
*
@ -1012,6 +992,21 @@ class Net_SFTP extends Net_SSH2 {
return isset($result['size']) ? $result['size'] : -1;
}
/**
* Truncates a file to a given length
*
* @param String $filename
* @param Integer $new_size
* @return Boolean
* @access public
*/
function truncate($filename, $new_size)
{
$attr = pack('N3', NET_SFTP_ATTR_SIZE, 0, $new_size);
return $this->_setstat($filename, $attr, false);
}
/**
* Sets access and modification time of file.
*
@ -1078,24 +1073,7 @@ class Net_SFTP extends Net_SSH2 {
return false;
}
$attr = pack('N3', NET_SFTP_ATTR_ACCESSTIME, $time, $atime);
if (!$this->_send_sftp_packet(NET_SFTP_SETSTAT, pack('Na*a*', strlen($filename), $filename, $attr))) {
return false;
}
$response = $this->_get_sftp_packet();
if ($this->packet_type != NET_SFTP_STATUS) {
user_error('Expected SSH_FXP_STATUS');
return false;
}
extract(unpack('Nstatus', $this->_string_shift($response, 4)));
if ($status != NET_SFTP_STATUS_OK) {
$this->_logError($response, $status);
return false;
}
return true;
return $this->_setstat($filename, $attr, false);
}
/**
@ -1913,6 +1891,10 @@ class Net_SFTP extends Net_SSH2 {
break;
case NET_SFTP_ATTR_PERMISSIONS: // 0x00000004
$attr+= unpack('Npermissions', $this->_string_shift($response, 4));
$fileType = $this->_parseMode($attr['permissions']);
if ($filetype !== false) {
$attr+= array('type' => $fileType);
}
break;
case NET_SFTP_ATTR_ACCESSTIME: // 0x00000008
$attr+= unpack('Natime/Nmtime', $this->_string_shift($response, 8));
@ -1930,6 +1912,47 @@ class Net_SFTP extends Net_SSH2 {
return $attr;
}
/**
* Attempt to identify the file type
*
* Quoting the SFTP RFC, "Implementations MUST NOT send bits that are not defined" but they seem to anyway
*
* @param Integer $mode
* @return Integer
* @access private
*/
function _parseMode($mode)
{
// values come from http://lxr.free-electrons.com/source/include/uapi/linux/stat.h#L12
// see, also, http://linux.die.net/man/2/stat
switch ($mode & 0170000) {// ie. 1111 0000 0000 0000
case 0000000: // no file type specified - figure out the file type using alternative means
return false;
case 0040000:
return NET_SFTP_TYPE_DIRECTORY;
case 0100000:
return NET_SFTP_TYPE_REGULAR;
case 0120000:
return NET_SFTP_TYPE_SYMLINK;
// new types introduced in SFTPv5+
// http://tools.ietf.org/html/draft-ietf-secsh-filexfer-05#section-5.2
case 0010000: // named pipe (fifo)
return NET_SFTP_TYPE_FIFO;
case 0020000: // character special
return NET_SFTP_TYPE_CHAR_DEVICE;
case 0060000: // block special
return NET_SFTP_BLOCK_DEVICE;
case 0140000: // socket
return NET_SFTP_TYPE_SOCKET;
case 0160000: // whiteout
// "SPECIAL should be used for files that are of
// a known type which cannot be expressed in the protocol"
return NET_SFTP_TYPE_SPECIAL;
default:
return NET_SFTP_TYPE_UNKNOWN;
}
}
/**
* Parse Longname
*
@ -2154,4 +2177,4 @@ class Net_SFTP extends Net_SSH2 {
$this->pwd = false;
parent::_disconnect($reason);
}
}
}