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SFTP: attempt to utilize SFTP via CLI if subsystem is unavailable

This commit is contained in:
terrafrost 2013-05-14 17:08:54 -05:00
parent b2262f731d
commit cb10016291
1 changed files with 19 additions and 2 deletions
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21
phpseclib/Net/SFTP.php
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@ -410,7 +410,24 @@ class Net_SFTP extends Net_SSH2 {
$response = $this->_get_channel_packet(NET_SFTP_CHANNEL);
if ($response === false) {
return false;
// from PuTTY's psftp.exe
$command = "test -x /usr/lib/sftp-server && exec /usr/lib/sftp-server\n" .
"test -x /usr/local/lib/sftp-server && exec /usr/local/lib/sftp-server\n" .
"exec sftp-server";
// we don't do $this->exec($command, false) because exec() operates on a different channel and plus the SSH_MSG_CHANNEL_OPEN that exec() does
// is redundant
$packet = pack('CNNa*CNa*',
NET_SSH2_MSG_CHANNEL_REQUEST, $this->server_channels[NET_SFTP_CHANNEL], strlen('exec'), 'exec', 1, strlen($command), $command);
if (!$this->_send_binary_packet($packet)) {
return false;
}
$this->channel_status[NET_SFTP_CHANNEL] = NET_SSH2_MSG_CHANNEL_REQUEST;
$response = $this->_get_channel_packet(NET_SFTP_CHANNEL);
if ($response === false) {
return false;
}
}
$this->channel_status[NET_SFTP_CHANNEL] = NET_SSH2_MSG_CHANNEL_DATA;
@ -2202,4 +2219,4 @@ class Net_SFTP extends Net_SSH2 {
$this->pwd = false;
parent::_disconnect($reason);
}
}
}