phpseclib/tests/Functional/Net/SSH2Test.php

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<?php
/**
* @author Andreas Fischer <bantu@phpbb.com>
* @copyright 2014 Andreas Fischer
* @license http://www.opensource.org/licenses/mit-license.html MIT License
*/
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declare(strict_types=1);
namespace phpseclib3\Tests\Functional\Net;
use phpseclib3\Net\SSH2;
use phpseclib3\Tests\PhpseclibFunctionalTestCase;
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class SSH2Test extends PhpseclibFunctionalTestCase
{
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public function getSSH2(): SSH2
{
return new SSH2($this->getEnv('SSH_HOSTNAME'), 22);
}
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public function getSSH2Login(): SSH2
{
$ssh = $this->getSSH2();
$username = $this->getEnv('SSH_USERNAME');
$password = $this->getEnv('SSH_PASSWORD');
$this->assertTrue(
$ssh->login($username, $password),
'SSH2 login using password failed.'
);
return $ssh;
}
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public function testConstructor(): SSH2
{
$ssh = $this->getSSH2();
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$this->assertIsObject(
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$ssh,
'Could not construct NET_SSH2 object.'
);
return $ssh;
}
/**
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* @depends testConstructor
* @group github408
* @group github412
*/
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public function testPreLogin(SSH2 $ssh): SSH2
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{
$this->assertFalse(
$ssh->isConnected(),
'Failed asserting that SSH2 is not connected after construction.'
);
$this->assertFalse(
$ssh->isAuthenticated(),
'Failed asserting that SSH2 is not authenticated after construction.'
);
$this->assertFalse(
$ssh->isShellOpen(),
'Failed asserting that SSH2 does not have open shell after construction.'
);
$this->assertEquals(
0,
$ssh->getInteractiveChannelId(),
'Failed asserting that channel identifier 0 is returned.'
);
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$this->assertNotEmpty(
$ssh->getServerPublicHostKey(),
'Failed asserting that a non-empty public host key was fetched.'
);
$this->assertTrue(
$ssh->isConnected(),
'Failed asserting that SSH2 is connected after public key fetch.'
);
$this->assertNotEmpty(
$ssh->getServerIdentification(),
'Failed asserting that the server identifier was set after connect.'
);
return $ssh;
}
/**
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* @depends testPreLogin
*/
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public function testBadPassword(SSH2 $ssh): SSH2
{
$username = $this->getEnv('SSH_USERNAME');
$password = $this->getEnv('SSH_PASSWORD');
$this->assertFalse(
$ssh->login($username, 'zzz' . $password),
'SSH2 login using password succeeded.'
);
$this->assertTrue(
$ssh->isConnected(),
'Failed asserting that SSH2 is connected after bad login attempt.'
);
$this->assertFalse(
$ssh->isAuthenticated(),
'Failed asserting that SSH2 is not authenticated after bad login attempt.'
);
$this->assertFalse(
$ssh->isShellOpen(),
'Failed asserting that SSH2 does not have open shell after bad login attempt.'
);
return $ssh;
}
/**
* @depends testBadPassword
*/
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public function testPasswordLogin(SSH2 $ssh): SSH2
{
$username = $this->getEnv('SSH_USERNAME');
$password = $this->getEnv('SSH_PASSWORD');
$this->assertTrue(
$ssh->login($username, $password),
'SSH2 login using password failed.'
);
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$this->assertTrue(
$ssh->isAuthenticated(),
'Failed asserting that SSH2 is authenticated after good login attempt.'
);
$this->assertFalse(
$ssh->isShellOpen(),
'Failed asserting that SSH2 does not have open shell after good login attempt.'
);
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return $ssh;
}
/**
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* @depends testPasswordLogin
* @group github280
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* @requires PHPUnit < 10
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*/
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public function testExecWithMethodCallback(SSH2 $ssh): SSH2
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{
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$callbackObject = $this->getMockBuilder('stdClass')
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->setMethods(['callbackMethod'])
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->getMock();
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$callbackObject
->expects($this->atLeastOnce())
->method('callbackMethod')
->will($this->returnValue(true));
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$ssh->exec('pwd', [$callbackObject, 'callbackMethod']);
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$this->assertFalse(
$ssh->isPTYOpen(),
'Failed asserting that SSH2 does not have open exec channel after exec.'
);
$this->assertFalse(
$ssh->isShellOpen(),
'Failed asserting that SSH2 does not have open shell channel after exec.'
);
$this->assertEquals(
0,
$ssh->getInteractiveChannelId(),
'Failed asserting that channel identifier 0 is returned after exec.'
);
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return $ssh;
}
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public function testGetServerPublicHostKey(): void
{
$ssh = $this->getSSH2();
$this->assertIsString($ssh->getServerPublicHostKey());
}
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public function testOpenSocketConnect(): void
{
$fsock = fsockopen($this->getEnv('SSH_HOSTNAME'), 22);
$ssh = new SSH2($fsock);
$username = $this->getEnv('SSH_USERNAME');
$password = $this->getEnv('SSH_PASSWORD');
$this->assertTrue(
$ssh->login($username, $password),
'SSH2 login using an open socket failed.'
);
}
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/**
* @depends testExecWithMethodCallback
* @group github1009
*/
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public function testDisablePTY(SSH2 $ssh): SSH2
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{
$ssh->enablePTY();
$this->assertTrue(
$ssh->isPTYEnabled(),
'Failed asserting that pty was enabled.'
);
$this->assertFalse(
$ssh->isPTYOpen(),
'Failed asserting that pty was not open after enable.'
);
$this->assertEquals(
0,
$ssh->getInteractiveChannelId(),
'Failed asserting that 0 channel identifier is returned prior to opening.'
);
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$ssh->exec('ls -latr');
$this->assertTrue(
$ssh->isPTYOpen(),
'Failed asserting that pty was open.'
);
$this->assertFalse(
$ssh->isShellOpen(),
'Failed asserting that shell was not open after pty exec.'
);
$this->assertEquals(
SSH2::CHANNEL_EXEC,
$ssh->getInteractiveChannelId(),
'Failed asserting that exec channel identifier is returned after exec.'
);
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$ssh->disablePTY();
$this->assertFalse(
$ssh->isPTYEnabled(),
'Failed asserting that pty was disabled.'
);
$this->assertFalse(
$ssh->isPTYOpen(),
'Failed asserting that pty was not open after disable.'
);
$this->assertEquals(
SSH2::CHANNEL_EXEC,
$ssh->getInteractiveChannelId(),
'Failed asserting that exec channel identifier is returned after pty exec close.'
);
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$ssh->exec('pwd');
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$this->assertFalse(
$ssh->isPTYOpen(),
'Failed asserting that pty was not open after exec.'
);
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return $ssh;
}
/**
* @depends testDisablePTY
* @group github1167
*/
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public function testChannelDataAfterOpen(SSH2 $ssh): void
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{
// Ubuntu's OpenSSH from 5.8 to 6.9 didn't work with multiple channels. see
// https://bugs.launchpad.net/ubuntu/+source/openssh/+bug/1334916 for more info.
// https://lists.ubuntu.com/archives/oneiric-changes/2011-July/005772.html discusses
// when consolekit was incorporated.
// https://marc.info/?l=openssh-unix-dev&m=163409903417589&w=2 discusses some of the
// issues with how Ubuntu incorporated consolekit
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$pattern = '#^SSH-2\.0-OpenSSH_([\d.]+)[^ ]* Ubuntu-.*$#';
$match = preg_match($pattern, $ssh->getServerIdentification(), $matches);
$match = $match && version_compare('5.8', $matches[1], '<=');
$match = $match && version_compare('6.9', $matches[1], '>=');
if ($match) {
self::markTestSkipped('Ubuntu\'s OpenSSH >= 5.8 <= 6.9 didn\'t work well with multiple channels');
}
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$ssh->write("ping 127.0.0.1\n");
$this->assertTrue(
$ssh->isShellOpen(),
'Failed asserting that SSH2 has open shell after shell read/write.'
);
$this->assertFalse(
$ssh->isPTYOpen(),
'Failed asserting that pty was not open after shell read/write.'
);
$this->assertEquals(
SSH2::CHANNEL_SHELL,
$ssh->getInteractiveChannelId(),
'Failed asserting that shell channel identifier is returned after shell read/write.'
);
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$ssh->enablePTY();
$this->assertTrue(
$ssh->exec('bash'),
'Failed asserting exec command succeeded.'
);
$this->assertTrue(
$ssh->isShellOpen(),
'Failed asserting that SSH2 has open shell after pty exec.'
);
$this->assertTrue(
$ssh->isPTYOpen(),
'Failed asserting that pty was not open after exec.'
);
$this->assertEquals(
SSH2::CHANNEL_EXEC,
$ssh->getInteractiveChannelId(),
'Failed asserting that exec channel identifier is returned after pty exec.'
);
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$ssh->write("ls -latr\n");
$ssh->setTimeout(1);
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$this->assertIsString($ssh->read());
$this->assertTrue(
$ssh->isTimeout(),
'Failed asserting that pty exec read timed out'
);
$this->assertTrue(
$ssh->isShellOpen(),
'Failed asserting that SSH2 shell remains open across pty exec read/write.'
);
$this->assertTrue(
$ssh->isPTYOpen(),
'Failed asserting that pty was open after read timeout.'
);
}
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public function testOpenShell(): SSH2
{
$ssh = $this->getSSH2Login();
$this->assertTrue(
$ssh->openShell(),
'SSH2 shell initialization failed.'
);
$this->assertTrue(
$ssh->isShellOpen(),
'Failed asserting that SSH2 has open shell after init.'
);
$this->assertNotFalse(
$ssh->read(),
'Failed asserting that read succeeds.'
);
$ssh->write('hello');
$this->assertTrue(
$ssh->isShellOpen(),
'Failed asserting that SSH2 has open shell after read/write.'
);
$this->assertEquals(
SSH2::CHANNEL_SHELL,
$ssh->getInteractiveChannelId(),
'Failed asserting that shell channel identifier is returned after read/write.'
);
return $ssh;
}
/**
* @depends testOpenShell
*/
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public function testResetOpenShell(SSH2 $ssh): void
{
$ssh->reset();
$this->assertFalse(
$ssh->isShellOpen(),
'Failed asserting that SSH2 has open shell after reset.'
);
$this->assertEquals(
SSH2::CHANNEL_SHELL,
$ssh->getInteractiveChannelId(),
'Failed asserting that shell channel identifier is returned after reset.'
);
}
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public function testMultipleExecPty(): void
{
$this->expectException(\RuntimeException::class);
$this->expectExceptionMessage('Please close the channel (1) before trying to open it again');
$ssh = $this->getSSH2Login();
$ssh->enablePTY();
$ssh->exec('bash');
$ssh->exec('bash');
}
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public function testMultipleInteractiveChannels(): void
{
$ssh = $this->getSSH2Login();
$this->assertTrue(
$ssh->openShell(),
'SSH2 shell initialization failed.'
);
$this->assertEquals(
SSH2::CHANNEL_SHELL,
$ssh->getInteractiveChannelId(),
'Failed asserting that shell channel identifier is returned after open shell.'
);
$ssh->setTimeout(1);
$this->assertIsString(
$ssh->read(),
'Failed asserting that read succeeds after shell init'
);
$directory = $ssh->exec('pwd');
$this->assertFalse(
$ssh->isTimeout(),
'failed'
);
$this->assertIsString(
$directory,
'Failed asserting that exec succeeds after shell read/write'
);
$ssh->write("pwd\n");
$this->assertStringContainsString(
trim($directory),
$ssh->read(),
'Failed asserting that current directory can be read from shell after exec'
);
$ssh->enablePTY();
$this->assertTrue(
$ssh->exec('bash'),
'Failed asserting that pty exec succeeds'
);
$this->assertTrue(
$ssh->isShellOpen(),
'Failed asserting that SSH2 has open shell after pty exec.'
);
$this->assertEquals(
SSH2::CHANNEL_EXEC,
$ssh->getInteractiveChannelId(),
'Failed asserting that exec channel identifier is returned after pty exec.'
);
$ssh->write("pwd\n", SSH2::CHANNEL_SHELL);
$this->assertStringContainsString(
trim($directory),
$ssh->read('', SSH2::READ_SIMPLE, SSH2::CHANNEL_SHELL),
'Failed asserting that current directory can be read from shell after pty exec'
);
$this->assertTrue(
$ssh->isPTYOpen(),
'Failed asserting that SSH2 has open pty exec after shell read/write.'
);
$ssh->write("pwd\n", SSH2::CHANNEL_EXEC);
$this->assertIsString(
$ssh->read('', SSH2::READ_SIMPLE, SSH2::CHANNEL_EXEC),
'Failed asserting that pty exec read succeeds'
);
$ssh->reset(SSH2::CHANNEL_EXEC);
$this->assertFalse(
$ssh->isPTYOpen(),
'Failed asserting that SSH2 has closed pty exec after reset.'
);
$ssh->disablePTY();
$this->assertTrue(
$ssh->isShellOpen(),
'Failed asserting that SSH2 has open shell after pty exec.'
);
$ssh->write("pwd\n", SSH2::CHANNEL_SHELL);
$this->assertStringContainsString(
trim($directory),
$ssh->read('', SSH2::READ_SIMPLE, SSH2::CHANNEL_SHELL),
'Failed asserting that current directory can be read from shell after pty exec'
);
$ssh->reset(SSH2::CHANNEL_SHELL);
$this->assertFalse(
$ssh->isShellOpen(),
'Failed asserting that SSH2 has closed shell after reset.'
);
$this->assertEquals(
SSH2::CHANNEL_EXEC,
$ssh->getInteractiveChannelId(),
'Failed asserting that exec channel identifier is maintained as last opened channel.'
);
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}
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public function testReadingOfClosedChannel(): void
{
$ssh = $this->getSSH2Login();
$this->assertSame(0, $ssh->getOpenChannelCount());
$ssh->enablePTY();
$ssh->exec('ping -c 3 127.0.0.1; exit');
$ssh->write("ping 127.0.0.2\n", SSH2::CHANNEL_SHELL);
$ssh->setTimeout(3);
$output = $ssh->read('', SSH2::READ_SIMPLE, SSH2::CHANNEL_SHELL);
$this->assertStringContainsString('PING 127.0.0.2', $output);
$output = $ssh->read('', SSH2::READ_SIMPLE, SSH2::CHANNEL_EXEC);
$this->assertStringContainsString('PING 127.0.0.1', $output);
$this->assertSame(1, $ssh->getOpenChannelCount());
$ssh->reset(SSH2::CHANNEL_SHELL);
$this->assertSame(0, $ssh->getOpenChannelCount());
}
}