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Merge pull request #1697 from terrafrost/sftpv456-3.0

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add SFTP v4/5/6 support to phpseclib v3
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terrafrost 2021-09-28 20:39:40 -05:00 committed by GitHub
commit d8ea63dbdb
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3 changed files with 517 additions and 116 deletions
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27
phpseclib/Common/Functions/Strings.php
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@ -70,6 +70,7 @@ abstract class Strings
* C = byte
* b = boolean (true/false)
* N = uint32
* Q = uint64
* s = string
* i = mpint
* L = name-list
@ -100,6 +101,12 @@ abstract class Strings
throw new \LengthException('At least four byte needs to be present for successful N / i / s / L decodes');
}
break;
case 'Q':
if (strlen($data) < 8) {
throw new \LengthException('At least eight byte needs to be present for successful N / i / s / L decodes');
}
break;
default:
throw new \InvalidArgumentException('$format contains an invalid character');
}
@ -114,6 +121,19 @@ abstract class Strings
list(, $temp) = unpack('N', self::shift($data, 4));
$result[] = $temp;
continue 2;
case 'Q':
// pack() added support for Q in PHP 5.6.3 and PHP 5.6 is phpseclib 3's minimum version
// so in theory we could support this BUT, "64-bit format codes are not available for
// 32-bit versions" and phpseclib works on 32-bit installs. on 32-bit installs
// 64-bit floats can be used to get larger numbers then 32-bit signed ints would allow
// for. sure, you're not gonna get the full precision of 64-bit numbers but just because
// you need > 32-bit precision doesn't mean you need the full 64-bit precision
extract(unpack('Nupper/Nlower', self::shift($data, 8)));
$temp = $upper ? 4294967296 * $upper : 0;
$temp+= $lower < 0 ? ($lower & 0x7FFFFFFFF) + 0x80000000 : $lower;
// $temp = hexdec(bin2hex(self::shift($data, 8)));
$result[] = $temp;
continue 2;
}
list(, $length) = unpack('N', self::shift($data, 4));
if (strlen($data) < $length) {
@ -165,6 +185,13 @@ abstract class Strings
}
$result.= $element ? "\1" : "\0";
break;
case 'Q':
if (!is_int($element) && !is_float($element)) {
throw new \InvalidArgumentException('An integer was expected.');
}
// 4294967296 == 1 << 32
$result.= pack('NN', $element / 4294967296, $element);
break;
case 'N':
if (is_float($element)) {
$element = (int) $element;

604
phpseclib/Net/SFTP.php
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File diff suppressed because it is too large Load Diff

2
phpseclib/Net/SSH2.php
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@ -216,7 +216,7 @@ class SSH2
* @var array|false
* @access private
*/
private $server_identifier = false;
protected $server_identifier = false;
/**
* Key Exchange Algorithms