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SFTP: Add the ability to write to specific parts of files

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This commit is contained in:
terrafrost 2013-02-12 20:45:09 -06:00
parent 51e063f1a4
commit faaa52774f
1 changed files with 18 additions and 5 deletions
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19
phpseclib/Net/SFTP.php
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@ -1323,14 +1323,19 @@ class Net_SFTP extends Net_SSH2 {
* Currently, only binary mode is supported. As such, if the line endings need to be adjusted, you will need to take * Currently, only binary mode is supported. As such, if the line endings need to be adjusted, you will need to take
* care of that, yourself. * care of that, yourself.
* *
* As for $start... if it's negative (which it is by default) a new file will be created or an existing
* file truncated depending on $mode | NET_SFTP_RESUME. If it's zero or positive it'll be updated at that
* spot.
*
* @param String $remote_file * @param String $remote_file
* @param String $data * @param String $data
* @param optional Integer $mode * @param optional Integer $mode
* @param optional Integer $start
* @return Boolean * @return Boolean
* @access public * @access public
* @internal ASCII mode for SFTPv4/5/6 can be supported by adding a new function - Net_SFTP::setMode(). * @internal ASCII mode for SFTPv4/5/6 can be supported by adding a new function - Net_SFTP::setMode().
*/ */
function put($remote_file, $data, $mode = NET_SFTP_STRING) function put($remote_file, $data, $mode = NET_SFTP_STRING, $start = -1)
{ {
if (!($this->bitmap & NET_SSH2_MASK_LOGIN)) { if (!($this->bitmap & NET_SSH2_MASK_LOGIN)) {
return false; return false;
@ -1348,9 +1353,13 @@ class Net_SFTP extends Net_SSH2 {
// if NET_SFTP_OPEN_APPEND worked as it should the following (up until the -----------) wouldn't be necessary // if NET_SFTP_OPEN_APPEND worked as it should the following (up until the -----------) wouldn't be necessary
$offset = 0; $offset = 0;
if ($mode & NET_SFTP_RESUME) { if (($mode & NET_SFTP_RESUME) || $start >= 0) {
if ($start >= 0) {
$offset = $start;
} else {
$size = $this->_size($remote_file); $size = $this->_size($remote_file);
$offset = $size !== false ? $size : 0; $offset = $size !== false ? $size : 0;
}
} else { } else {
$flags|= NET_SFTP_OPEN_TRUNCATE; $flags|= NET_SFTP_OPEN_TRUNCATE;
} }
@ -1477,10 +1486,14 @@ class Net_SFTP extends Net_SSH2 {
* *
* Returns a string containing the contents of $remote_file if $local_file is left undefined or a boolean false if * Returns a string containing the contents of $remote_file if $local_file is left undefined or a boolean false if
* the operation was unsuccessful. If $local_file is defined, returns true or false depending on the success of the * the operation was unsuccessful. If $local_file is defined, returns true or false depending on the success of the
* operation * operation.
*
* $offset and $length can be used to download files in chunks.
* *
* @param String $remote_file * @param String $remote_file
* @param optional String $local_file * @param optional String $local_file
* @param optional Integer $offset
* @param optional Integer $length
* @return Mixed * @return Mixed
* @access public * @access public
*/ */