mirror of
https://github.com/jtesta/ssh-audit.git
synced 2024-11-16 13:35:39 +01:00
163 lines
6.5 KiB
Python
163 lines
6.5 KiB
Python
import socket
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import errno
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import pytest
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# pylint: disable=attribute-defined-outside-init
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class TestErrors:
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@pytest.fixture(autouse=True)
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def init(self, ssh_audit):
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self.AuditConf = ssh_audit.AuditConf
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self.audit = ssh_audit.audit
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def _conf(self):
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conf = self.AuditConf('localhost', 22)
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conf.colors = False
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conf.batch = True
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return conf
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def _audit(self, spy, conf=None, exit_expected=False):
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if conf is None:
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conf = self._conf()
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spy.begin()
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if exit_expected:
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with pytest.raises(SystemExit):
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self.audit(conf)
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else:
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ret = self.audit(conf)
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assert ret != 0
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lines = spy.flush()
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return lines
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def test_connection_unresolved(self, output_spy, virtual_socket):
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vsocket = virtual_socket
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vsocket.gsock.addrinfodata['localhost#22'] = []
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lines = self._audit(output_spy, exit_expected=True)
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assert len(lines) == 1
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assert 'has no DNS records' in lines[-1]
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def test_connection_refused(self, output_spy, virtual_socket):
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vsocket = virtual_socket
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vsocket.errors['connect'] = socket.error(errno.ECONNREFUSED, 'Connection refused')
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lines = self._audit(output_spy, exit_expected=True)
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assert len(lines) == 1
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assert 'Connection refused' in lines[-1]
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def test_connection_timeout(self, output_spy, virtual_socket):
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vsocket = virtual_socket
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vsocket.errors['connect'] = socket.timeout('timed out')
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lines = self._audit(output_spy, exit_expected=True)
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assert len(lines) == 1
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assert 'timed out' in lines[-1]
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def test_recv_empty(self, output_spy, virtual_socket):
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lines = self._audit(output_spy)
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assert len(lines) == 1
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assert 'did not receive banner' in lines[-1]
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def test_recv_timeout(self, output_spy, virtual_socket):
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vsocket = virtual_socket
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vsocket.rdata.append(socket.timeout('timed out'))
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lines = self._audit(output_spy)
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assert len(lines) == 1
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assert 'did not receive banner' in lines[-1]
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assert 'timed out' in lines[-1]
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def test_recv_retry_till_timeout(self, output_spy, virtual_socket):
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vsocket = virtual_socket
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vsocket.rdata.append(socket.error(errno.EAGAIN, 'Resource temporarily unavailable'))
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vsocket.rdata.append(socket.error(errno.EWOULDBLOCK, 'Resource temporarily unavailable'))
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vsocket.rdata.append(socket.error(errno.EAGAIN, 'Resource temporarily unavailable'))
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vsocket.rdata.append(socket.timeout('timed out'))
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lines = self._audit(output_spy)
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assert len(lines) == 1
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assert 'did not receive banner' in lines[-1]
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assert 'timed out' in lines[-1]
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def test_recv_retry_till_reset(self, output_spy, virtual_socket):
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vsocket = virtual_socket
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vsocket.rdata.append(socket.error(errno.EAGAIN, 'Resource temporarily unavailable'))
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vsocket.rdata.append(socket.error(errno.EWOULDBLOCK, 'Resource temporarily unavailable'))
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vsocket.rdata.append(socket.error(errno.EAGAIN, 'Resource temporarily unavailable'))
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vsocket.rdata.append(socket.error(errno.ECONNRESET, 'Connection reset by peer'))
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lines = self._audit(output_spy)
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assert len(lines) == 1
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assert 'did not receive banner' in lines[-1]
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assert 'reset by peer' in lines[-1]
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def test_connection_closed_before_banner(self, output_spy, virtual_socket):
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vsocket = virtual_socket
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vsocket.rdata.append(socket.error(errno.ECONNRESET, 'Connection reset by peer'))
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lines = self._audit(output_spy)
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assert len(lines) == 1
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assert 'did not receive banner' in lines[-1]
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assert 'reset by peer' in lines[-1]
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def test_connection_closed_after_header(self, output_spy, virtual_socket):
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vsocket = virtual_socket
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vsocket.rdata.append(b'header line 1\n')
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vsocket.rdata.append(b'\n')
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vsocket.rdata.append(b'header line 2\n')
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vsocket.rdata.append(socket.error(errno.ECONNRESET, 'Connection reset by peer'))
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lines = self._audit(output_spy)
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assert len(lines) == 3
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assert 'did not receive banner' in lines[-1]
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assert 'reset by peer' in lines[-1]
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def test_connection_closed_after_banner(self, output_spy, virtual_socket):
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vsocket = virtual_socket
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vsocket.rdata.append(b'SSH-2.0-ssh-audit-test\r\n')
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vsocket.rdata.append(socket.error(54, 'Connection reset by peer'))
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lines = self._audit(output_spy)
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assert len(lines) == 2
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assert 'error reading packet' in lines[-1]
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assert 'reset by peer' in lines[-1]
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def test_empty_data_after_banner(self, output_spy, virtual_socket):
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vsocket = virtual_socket
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vsocket.rdata.append(b'SSH-2.0-ssh-audit-test\r\n')
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lines = self._audit(output_spy)
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assert len(lines) == 2
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assert 'error reading packet' in lines[-1]
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assert 'empty' in lines[-1]
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def test_wrong_data_after_banner(self, output_spy, virtual_socket):
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vsocket = virtual_socket
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vsocket.rdata.append(b'SSH-2.0-ssh-audit-test\r\n')
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vsocket.rdata.append(b'xxx\n')
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lines = self._audit(output_spy)
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assert len(lines) == 2
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assert 'error reading packet' in lines[-1]
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assert 'xxx' in lines[-1]
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def test_non_ascii_banner(self, output_spy, virtual_socket):
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vsocket = virtual_socket
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vsocket.rdata.append(b'SSH-2.0-ssh-audit-test\xc3\xbc\r\n')
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lines = self._audit(output_spy)
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assert len(lines) == 3
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assert 'error reading packet' in lines[-1]
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assert 'ASCII' in lines[-2]
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assert lines[-3].endswith('SSH-2.0-ssh-audit-test?')
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def test_nonutf8_data_after_banner(self, output_spy, virtual_socket):
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vsocket = virtual_socket
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vsocket.rdata.append(b'SSH-2.0-ssh-audit-test\r\n')
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vsocket.rdata.append(b'\x81\xff\n')
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lines = self._audit(output_spy)
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assert len(lines) == 2
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assert 'error reading packet' in lines[-1]
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assert '\\x81\\xff' in lines[-1]
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def test_protocol_mismatch_by_conf(self, output_spy, virtual_socket):
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vsocket = virtual_socket
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vsocket.rdata.append(b'SSH-1.3-ssh-audit-test\r\n')
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vsocket.rdata.append(b'Protocol major versions differ.\n')
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conf = self._conf()
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conf.ssh1, conf.ssh2 = True, False
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lines = self._audit(output_spy, conf)
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assert len(lines) == 3
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assert 'error reading packet' in lines[-1]
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assert 'major versions differ' in lines[-1]
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