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Telnet Binary Send
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This commit is contained in:
Deon George 2025-01-31 17:42:21 +11:00
parent 07e42e2f5e
commit c42340fe60
2 changed files with 14 additions and 5 deletions
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2
app/Classes/Protocol/EMSI.php
View File

@ -960,7 +960,7 @@ final class EMSI extends BaseProtocol implements CRCInterface,ZmodemInterface
Log::debug(sprintf('%s: - IAC DO BINARY [%02x]',self::LOGKEY,ord($iac)));
// Config with WILL
if ($this->client->iac_bin) {
if (! $this->client->iac_bin) {
$this->client->send(chr(0xff).chr(0xfb).$iac,10);
$this->client->iac_bin = true;
}

17
app/Classes/Sock/SocketClient.php
View File

@ -433,13 +433,17 @@ final class SocketClient {
if ($flags !== MSG_PEEK)
$this->rx_buf = substr($this->rx_buf,strlen($result));
Log::debug(sprintf('%s:*** ',self::LOGKEY),['iac_bin'=>$this->iac_bin]);
// In case we are in Telnet Binary Mode
if ($this->iac_bin) {
if (self::DEBUG)
Log::debug(sprintf('%s:- Telnet IAC Binary Mode, looking for ff ff',self::LOGKEY));
Log::debug(sprintf('%s:- Telnet IAC Binary Mode, looking for ff ff',self::LOGKEY),['result'=>hex_dump($result)]);
// if the last char is ff, we need to get the next char
if (str_ends_with($result,"\xff")) {
Log::debug(sprintf('%s: - We have a hit',self::LOGKEY));
// If we have it in our buffer, just get it
if ($this->rx_left) {
$result .= substr($this->rx_buf,0,1);
@ -449,14 +453,14 @@ final class SocketClient {
} else {
$this->rx_buf = $result;
$len++;
$result = NULL;
$result = '';
}
}
if (strlen($result) > 1)
$result = str_replace("\xff\xff","\xff",$result);
if ($result)
if (strlen($result))
return $result;
} else
@ -464,7 +468,7 @@ final class SocketClient {
}
if (self::DEBUG)
Log::debug(sprintf('%s:- Buffer doesnt have [%d] chars, it only has [%d]',self::LOGKEY,$len,strlen($this->rx_buf)));
Log::debug(sprintf('%s:- Buffer doesnt have [%d] chars, it only has [%d], or it ends with 0xff',self::LOGKEY,$len,strlen($this->rx_buf)),['rx_buf'=>hex_dump($this->rx_buf)]);
if ($timeout && (! $this->hasData($timeout)))
throw new SocketException(SocketException::SOCKET_TIMEOUT,$timeout);
@ -591,6 +595,11 @@ final class SocketClient {
if (self::DEBUG)
Log::debug(sprintf('%s:- Sending [%d] chars [%s]',self::LOGKEY,strlen($message),Str::limit($message,15)));
if ($this->iac_bin) {
Log::debug(sprintf('%s:- IAC_BIN mode, looking for 0xff',self::LOGKEY));
$message = str_replace("\xff","\xff\xff",$message);
}
switch ($this->type) {
case SOCK_STREAM:
return socket_write($this->connection,$message,strlen($message));