SFTP: update get(), put() and touch()

This commit is contained in:
terrafrost 2021-09-13 09:08:48 -05:00
parent 5fcba4627f
commit 9ae2b0030d
1 changed files with 54 additions and 41 deletions

View File

@ -358,9 +358,6 @@ class Net_SFTP extends Net_SSH2
$this->packet_types = array(
1 => 'NET_SFTP_INIT',
2 => 'NET_SFTP_VERSION',
/* the format of SSH_FXP_OPEN changed between SFTPv4 and SFTPv5+:
SFTPv5+: http://tools.ietf.org/html/draft-ietf-secsh-filexfer-13#section-8.1.1
pre-SFTPv5 : http://tools.ietf.org/html/draft-ietf-secsh-filexfer-04#section-6.3 */
3 => 'NET_SFTP_OPEN',
4 => 'NET_SFTP_CLOSE',
5 => 'NET_SFTP_READ',
@ -374,9 +371,6 @@ class Net_SFTP extends Net_SSH2
15 => 'NET_SFTP_RMDIR',
16 => 'NET_SFTP_REALPATH',
17 => 'NET_SFTP_STAT',
/* the format of SSH_FXP_RENAME changed between SFTPv4 and SFTPv5+:
SFTPv5+: http://tools.ietf.org/html/draft-ietf-secsh-filexfer-13#section-8.3
pre-SFTPv5 : http://tools.ietf.org/html/draft-ietf-secsh-filexfer-04#section-6.5 */
18 => 'NET_SFTP_RENAME',
19 => 'NET_SFTP_READLINK',
20 => 'NET_SFTP_SYMLINK',
@ -449,16 +443,38 @@ class Net_SFTP extends Net_SSH2
// that's not a problem, however, and 'anded' and a 32-bit number, as all the leading 1 bits are ignored.
(-1 << 31) & 0xFFFFFFFF => 'NET_SFTP_ATTR_EXTENDED'
);
// http://tools.ietf.org/html/draft-ietf-secsh-filexfer-04#section-6.3
// the flag definitions change somewhat in SFTPv5+. if SFTPv5+ support is added to this library, maybe name
// the array for that $this->open5_flags and similarly alter the constant names.
$this->open_flags = array(
0x00000001 => 'NET_SFTP_OPEN_READ',
0x00000002 => 'NET_SFTP_OPEN_WRITE',
0x00000004 => 'NET_SFTP_OPEN_APPEND',
0x00000008 => 'NET_SFTP_OPEN_CREATE',
0x00000010 => 'NET_SFTP_OPEN_TRUNCATE',
0x00000020 => 'NET_SFTP_OPEN_EXCL'
0x00000020 => 'NET_SFTP_OPEN_EXCL',
0x00000040 => 'NET_SFTP_OPEN_TEXT' // defined in SFTPv4
);
// SFTPv5+ changed the flags up:
// https://datatracker.ietf.org/doc/html/draft-ietf-secsh-filexfer-13#section-8.1.1.3
$this->open_flags5 = array(
// when SSH_FXF_ACCESS_DISPOSITION is a 3 bit field that controls how the file is opened
0x00000000 => 'NET_SFTP_OPEN_CREATE_NEW',
0x00000001 => 'NET_SFTP_OPEN_CREATE_TRUNCATE',
0x00000002 => 'NET_SFTP_OPEN_OPEN_EXISTING',
0x00000003 => 'NET_SFTP_OPEN_OPEN_OR_CREATE',
0x00000004 => 'NET_SFTP_OPEN_TRUNCATE_EXISTING',
// the rest of the flags are not supported
0x00000008 => 'NET_SFTP_OPEN_APPEND_DATA', // "the offset field of SS_FXP_WRITE requests is ignored"
0x00000010 => 'NET_SFTP_OPEN_APPEND_DATA_ATOMIC',
0x00000020 => 'NET_SFTP_OPEN_TEXT_MODE',
0x00000040 => 'NET_SFTP_OPEN_BLOCK_READ',
0x00000080 => 'NET_SFTP_OPEN_BLOCK_WRITE',
0x00000100 => 'NET_SFTP_OPEN_BLOCK_DELETE',
0x00000200 => 'NET_SFTP_OPEN_BLOCK_ADVISORY',
0x00000400 => 'NET_SFTP_OPEN_NOFOLLOW',
0x00000800 => 'NET_SFTP_OPEN_DELETE_ON_CLOSE',
0x00001000 => 'NET_SFTP_OPEN_ACCESS_AUDIT_ALARM_INFO',
0x00002000 => 'NET_SFTP_OPEN_ACCESS_BACKUP',
0x00004000 => 'NET_SFTP_OPEN_BACKUP_STREAM',
0x00008000 => 'NET_SFTP_OPEN_OVERRIDE_OWNER',
);
// http://tools.ietf.org/html/draft-ietf-secsh-filexfer-04#section-5.2
// see Net_SFTP::_parseLongname() for an explanation
@ -480,6 +496,7 @@ class Net_SFTP extends Net_SSH2
$this->status_codes,
$this->attributes,
$this->open_flags,
$this->open_flags5,
$this->file_types
);
@ -1611,9 +1628,12 @@ class Net_SFTP extends Net_SSH2
$atime = $time;
}
$flags = NET_SFTP_OPEN_WRITE | NET_SFTP_OPEN_CREATE | NET_SFTP_OPEN_EXCL;
$attr = pack('N3', NET_SFTP_ATTR_ACCESSTIME, $time, $atime);
$packet = pack('Na*Na*', strlen($filename), $filename, $flags, $attr);
$packet = pack('Na*', strlen($filename), $filename);
$packet.= $this->version >= 5 ?
pack('N2', 0, NET_SFTP_OPEN_OPEN_EXISTING) :
pack('N', NET_SFTP_OPEN_WRITE | NET_SFTP_OPEN_CREATE | NET_SFTP_OPEN_EXCL);
$packet.= pack('N3', NET_SFTP_ATTR_ACCESSTIME, $time, $atime);
if (!$this->_send_sftp_packet(NET_SFTP_OPEN, $packet)) {
return false;
}
@ -2173,27 +2193,6 @@ class Net_SFTP extends Net_SSH2
*/
function put($remote_file, $data, $mode = NET_SFTP_STRING, $start = -1, $local_start = -1, $progressCallback = null)
{
/*
SFTPv4 introduces the following new mode:
- SSH_FXP_TEXT (renamed to SSH_FXF_TEXT_MODE in v5)
SFTPv5 introduced the following new modes:
- SSH_FXF_ACCESS_READ_LOCK (renamed to SSH_FXF_BLOCK_READ in v6)
- SSH_FXF_ACCESS_WRITE_LOCK (renamed to SSH_FXF_BLOCK_WRITE in v6)
- SSH_FXF_ACCESS_DELETE_LOCK (renamed to SSH_FXF_BLOCK_DELETE in v6)
SFTPv6 introduced the following new modes:
- SSH_FXF_BLOCK_ADVISORY
- SSH_FXF_NOFOLLOW
- SSH_FXF_DELETE_ON_CLOSE
- SSH_FXF_ACCESS_AUDIT_ALARM_INFO
- SSH_FXF_ACCESS_BACKUP
- SSH_FXF_BACKUP_STREAM
- ACCESS_OVERRIDE_OWNER
none of these are currently supported
*/
if (!$this->_precheck()) {
return false;
}
@ -2205,10 +2204,14 @@ class Net_SFTP extends Net_SSH2
$this->_remove_from_stat_cache($remote_file);
$flags = NET_SFTP_OPEN_WRITE | NET_SFTP_OPEN_CREATE;
// according to the SFTP specs, NET_SFTP_OPEN_APPEND should "force all writes to append data at the end of the file."
// in practice, it doesn't seem to do that.
//$flags|= ($mode & NET_SFTP_RESUME) ? NET_SFTP_OPEN_APPEND : NET_SFTP_OPEN_TRUNCATE;
if ($this->version >= 5) {
$flags = NET_SFTP_OPEN_OPEN_OR_CREATE;
} else {
$flags = NET_SFTP_OPEN_WRITE | NET_SFTP_OPEN_CREATE;
// according to the SFTP specs, NET_SFTP_OPEN_APPEND should "force all writes to append data at the end of the file."
// in practice, it doesn't seem to do that.
//$flags|= ($mode & NET_SFTP_RESUME) ? NET_SFTP_OPEN_APPEND : NET_SFTP_OPEN_TRUNCATE;
}
if ($start >= 0) {
$offset = $start;
@ -2218,10 +2221,17 @@ class Net_SFTP extends Net_SSH2
$offset = $size !== false ? $size : 0;
} else {
$offset = 0;
$flags|= NET_SFTP_OPEN_TRUNCATE;
if ($this->version >= 5) {
$flags = NET_SFTP_OPEN_CREATE_TRUNCATE;
} else {
$flags|= NET_SFTP_OPEN_TRUNCATE;
}
}
$packet = pack('Na*N2', strlen($remote_file), $remote_file, $flags, 0);
$packet = pack('Na*', strlen($remote_file), $remote_file);
$packet.= $this->version >= 5 ?
pack('N3', 0, $flags, 0) :
pack('N2', $flags, 0);
if (!$this->_send_sftp_packet(NET_SFTP_OPEN, $packet)) {
return false;
}
@ -2445,7 +2455,10 @@ class Net_SFTP extends Net_SSH2
return false;
}
$packet = pack('Na*N2', strlen($remote_file), $remote_file, NET_SFTP_OPEN_READ, 0);
$packet = pack('Na*', strlen($remote_file), $remote_file);
$packet.= $this->version >= 5 ?
pack('N3', 0, NET_SFTP_OPEN_OPEN_EXISTING, 0) :
pack('N2', NET_SFTP_OPEN_READ, 0);
if (!$this->_send_sftp_packet(NET_SFTP_OPEN, $packet)) {
return false;
}