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SFTP: add readlink and symlink functions
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@ -312,6 +312,8 @@ class Net_SFTP extends Net_SSH2
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SFTPv5+: http://tools.ietf.org/html/draft-ietf-secsh-filexfer-13#section-8.3
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pre-SFTPv5 : http://tools.ietf.org/html/draft-ietf-secsh-filexfer-04#section-6.5 */
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18 => 'NET_SFTP_RENAME',
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19 => 'NET_SFTP_READLINK',
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20 => 'NET_SFTP_SYMLINK',
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101=> 'NET_SFTP_STATUS',
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102=> 'NET_SFTP_HANDLE',
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@ -1557,6 +1559,86 @@ class Net_SFTP extends Net_SSH2
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return true;
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}
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/**
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* Return the target of a symbolic link
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*
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* @param String $link
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* @return Mixed
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* @access public
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*/
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function readlink($link)
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{
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if (!($this->bitmap & NET_SSH2_MASK_LOGIN)) {
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return false;
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}
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$link = $this->_realpath($link);
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if (!$this->_send_sftp_packet(NET_SFTP_READLINK, pack('Na*', strlen($link), $link))) {
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return false;
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}
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$response = $this->_get_sftp_packet();
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switch ($this->packet_type) {
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case NET_SFTP_NAME:
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break;
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case NET_SFTP_STATUS:
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$this->_logError($response);
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return false;
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default:
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user_error('Expected SSH_FXP_NAME or SSH_FXP_STATUS');
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return false;
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}
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extract(unpack('Ncount', $this->_string_shift($response, 4)));
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// the file isn't a symlink
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if (!$count) {
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return false;
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}
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extract(unpack('Nlength', $this->_string_shift($response, 4)));
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return $this->_string_shift($response, $length);
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}
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/**
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* Create a symlink
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*
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* symlink() creates a symbolic link to the existing target with the specified name link.
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*
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* @param String $target
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* @param String $link
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* @return Boolean
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* @access public
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*/
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function symlink($target, $link)
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{
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if (!($this->bitmap & NET_SSH2_MASK_LOGIN)) {
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return false;
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}
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$target = $this->_realpath($target);
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$link = $this->_realpath($link);
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$packet = pack('Na*Na*', strlen($target), $target, strlen($link), $link);
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if (!$this->_send_sftp_packet(NET_SFTP_SYMLINK, $packet)) {
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return false;
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}
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$response = $this->_get_sftp_packet();
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if ($this->packet_type != NET_SFTP_STATUS) {
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user_error('Expected SSH_FXP_STATUS');
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return false;
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}
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extract(unpack('Nstatus', $this->_string_shift($response, 4)));
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if ($status != NET_SFTP_STATUS_OK) {
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$this->_logError($response, $status);
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return false;
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}
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return true;
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}
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/**
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* Creates a directory.
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*
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