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SSH2: fix when keep alive packets are sent

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This commit is contained in:
terrafrost 2024-06-22 13:41:35 -05:00
parent 76e81b5348
commit cde532435e
1 changed files with 8 additions and 15 deletions
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19
phpseclib/Net/SSH2.php
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@ -785,14 +785,6 @@ class SSH2
*/ */
private $keepAlive; private $keepAlive;
/**
* Timestamp for the last sent keep alive message
*
* @see self::send_keep_alive()
* @var float|null
*/
private $keep_alive_sent = null;
/** /**
* Real-time log file pointer * Real-time log file pointer
* *
@ -3489,7 +3481,7 @@ class SSH2
$this->hmac_check = $this->hmac_create = false; $this->hmac_check = $this->hmac_create = false;
$this->hmac_size = false; $this->hmac_size = false;
$this->session_id = false; $this->session_id = false;
$this->keep_alive_sent = null; $this->last_packet = null;
$this->get_seq_no = $this->send_seq_no = 0; $this->get_seq_no = $this->send_seq_no = 0;
$this->channel_status = []; $this->channel_status = [];
$this->channel_id_last_interactive = 0; $this->channel_id_last_interactive = 0;
@ -3507,7 +3499,7 @@ class SSH2
$usec = (int) (1000000 * ($this->curTimeout - $sec)); $usec = (int) (1000000 * ($this->curTimeout - $sec));
} }
if ($this->keepAlive > 0) { if ($this->keepAlive > 0) {
$elapsed = microtime(true) - $this->keep_alive_sent; $elapsed = microtime(true) - $this->last_packet;
if ($elapsed < $this->curTimeout) { if ($elapsed < $this->curTimeout) {
$sec = (int) floor($elapsed); $sec = (int) floor($elapsed);
$usec = (int) (1000000 * ($elapsed - $sec)); $usec = (int) (1000000 * ($elapsed - $sec));
@ -3569,7 +3561,7 @@ class SSH2
if (!$packet->packet_length) { if (!$packet->packet_length) {
$this->get_binary_packet_size($packet); $this->get_binary_packet_size($packet);
} }
}; }
if (strlen($packet->raw) != $packet->size) { if (strlen($packet->raw) != $packet->size) {
throw new \RuntimeException('Size of packet was not expected length'); throw new \RuntimeException('Size of packet was not expected length');
@ -4380,12 +4372,13 @@ class SSH2
*/ */
private function send_keep_alive() private function send_keep_alive()
{ {
$elapsed = microtime(true) - $this->keep_alive_sent; if ($this->bitmap & self::MASK_CONNECTED) {
$elapsed = microtime(true) - $this->last_packet;
if ($this->keepAlive > 0 && $elapsed >= $this->keepAlive) { if ($this->keepAlive > 0 && $elapsed >= $this->keepAlive) {
$this->keep_alive_sent = microtime(true);
$this->send_binary_packet(pack('CN', NET_SSH2_MSG_IGNORE, 0)); $this->send_binary_packet(pack('CN', NET_SSH2_MSG_IGNORE, 0));
} }
} }
}
/** /**
* Logs data packets * Logs data packets