import unittest

from unit.applications.lang.python import TestApplicationPython


class TestHTTPHeader(TestApplicationPython):
    prerequisites = {'modules': {'python': 'any'}}

    def test_http_header_value_leading_sp(self):
        self.load('custom_header')

        resp = self.get(
            headers={
                'Host': 'localhost',
                'Custom-Header': ' ,',
                'Connection': 'close',
            }
        )

        self.assertEqual(resp['status'], 200, 'value leading sp status')
        self.assertEqual(
            resp['headers']['Custom-Header'],
            ',',
            'value leading sp custom header',
        )

    def test_http_header_value_leading_htab(self):
        self.load('custom_header')

        resp = self.get(
            headers={
                'Host': 'localhost',
                'Custom-Header': '\t,',
                'Connection': 'close',
            }
        )

        self.assertEqual(resp['status'], 200, 'value leading htab status')
        self.assertEqual(
            resp['headers']['Custom-Header'],
            ',',
            'value leading htab custom header',
        )

    def test_http_header_value_trailing_sp(self):
        self.load('custom_header')

        resp = self.get(
            headers={
                'Host': 'localhost',
                'Custom-Header': ', ',
                'Connection': 'close',
            }
        )

        self.assertEqual(resp['status'], 200, 'value trailing sp status')
        self.assertEqual(
            resp['headers']['Custom-Header'],
            ',',
            'value trailing sp custom header',
        )

    def test_http_header_value_trailing_htab(self):
        self.load('custom_header')

        resp = self.get(
            headers={
                'Host': 'localhost',
                'Custom-Header': ',\t',
                'Connection': 'close',
            }
        )

        self.assertEqual(resp['status'], 200, 'value trailing htab status')
        self.assertEqual(
            resp['headers']['Custom-Header'],
            ',',
            'value trailing htab custom header',
        )

    def test_http_header_value_both_sp(self):
        self.load('custom_header')

        resp = self.get(
            headers={
                'Host': 'localhost',
                'Custom-Header': ' , ',
                'Connection': 'close',
            }
        )

        self.assertEqual(resp['status'], 200, 'value both sp status')
        self.assertEqual(
            resp['headers']['Custom-Header'],
            ',',
            'value both sp custom header',
        )

    def test_http_header_value_both_htab(self):
        self.load('custom_header')

        resp = self.get(
            headers={
                'Host': 'localhost',
                'Custom-Header': '\t,\t',
                'Connection': 'close',
            }
        )

        self.assertEqual(resp['status'], 200, 'value both htab status')
        self.assertEqual(
            resp['headers']['Custom-Header'],
            ',',
            'value both htab custom header',
        )

    def test_http_header_value_chars(self):
        self.load('custom_header')

        resp = self.get(
            headers={
                'Host': 'localhost',
                'Custom-Header': '(),/:;<=>?@[\]{}\t !#$%&\'*+-.^_`|~',
                'Connection': 'close',
            }
        )

        self.assertEqual(resp['status'], 200, 'value chars status')
        self.assertEqual(
            resp['headers']['Custom-Header'],
            '(),/:;<=>?@[\]{}\t !#$%&\'*+-.^_`|~',
            'value chars custom header',
        )

    def test_http_header_value_chars_edge(self):
        self.load('custom_header')

        resp = self.http(
            b"""GET / HTTP/1.1
Host: localhost
Custom-Header: \x20\xFF
Connection: close

""",
            raw=True,
            encoding='latin1',
        )

        self.assertEqual(resp['status'], 200, 'value chars edge status')
        self.assertEqual(
            resp['headers']['Custom-Header'], '\xFF', 'value chars edge'
        )

    def test_http_header_value_chars_below(self):
        self.load('custom_header')

        resp = self.http(
            b"""GET / HTTP/1.1
Host: localhost
Custom-Header: \x1F
Connection: close

""",
            raw=True,
        )

        self.assertEqual(resp['status'], 400, 'value chars below')

    def test_http_header_field_leading_sp(self):
        self.load('empty')

        resp = self.get(
            headers={
                'Host': 'localhost',
                ' Custom-Header': 'blah',
                'Connection': 'close',
            }
        )

        self.assertEqual(resp['status'], 400, 'field leading sp')

    def test_http_header_field_leading_htab(self):
        self.load('empty')

        resp = self.get(
            headers={
                'Host': 'localhost',
                '\tCustom-Header': 'blah',
                'Connection': 'close',
            }
        )

        self.assertEqual(resp['status'], 400, 'field leading htab')

    def test_http_header_field_trailing_sp(self):
        self.load('empty')

        resp = self.get(
            headers={
                'Host': 'localhost',
                'Custom-Header ': 'blah',
                'Connection': 'close',
            }
        )

        self.assertEqual(resp['status'], 400, 'field trailing sp')

    def test_http_header_field_trailing_htab(self):
        self.load('empty')

        resp = self.get(
            headers={
                'Host': 'localhost',
                'Custom-Header\t': 'blah',
                'Connection': 'close',
            }
        )

        self.assertEqual(resp['status'], 400, 'field trailing htab')

    def test_http_header_content_length_big(self):
        self.load('empty')

        self.assertEqual(
            self.post(
                headers={
                    'Host': 'localhost',
                    'Content-Length': str(2 ** 64),
                    'Connection': 'close',
                },
                body='X' * 1000,
            )['status'],
            400,
            'Content-Length big',
        )

    def test_http_header_content_length_negative(self):
        self.load('empty')

        self.assertEqual(
            self.post(
                headers={
                    'Host': 'localhost',
                    'Content-Length': '-100',
                    'Connection': 'close',
                },
                body='X' * 1000,
            )['status'],
            400,
            'Content-Length negative',
        )

    def test_http_header_content_length_text(self):
        self.load('empty')

        self.assertEqual(
            self.post(
                headers={
                    'Host': 'localhost',
                    'Content-Length': 'blah',
                    'Connection': 'close',
                },
                body='X' * 1000,
            )['status'],
            400,
            'Content-Length text',
        )

    def test_http_header_content_length_multiple_values(self):
        self.load('empty')

        self.assertEqual(
            self.post(
                headers={
                    'Host': 'localhost',
                    'Content-Length': '41, 42',
                    'Connection': 'close',
                },
                body='X' * 1000,
            )['status'],
            400,
            'Content-Length multiple value',
        )

    def test_http_header_content_length_multiple_fields(self):
        self.load('empty')

        self.assertEqual(
            self.post(
                headers={
                    'Host': 'localhost',
                    'Content-Length': ['41', '42'],
                    'Connection': 'close',
                },
                body='X' * 1000,
            )['status'],
            400,
            'Content-Length multiple fields',
        )

    @unittest.skip('not yet')
    def test_http_header_host_absent(self):
        self.load('host')

        resp = self.get(headers={'Connection': 'close'})

        self.assertEqual(resp['status'], 400, 'Host absent status')

    def test_http_header_host_empty(self):
        self.load('host')

        resp = self.get(headers={'Host': '', 'Connection': 'close'})

        self.assertEqual(resp['status'], 200, 'Host empty status')
        self.assertNotEqual(
            resp['headers']['X-Server-Name'], '', 'Host empty SERVER_NAME'
        )

    def test_http_header_host_big(self):
        self.load('empty')

        self.assertEqual(
            self.get(headers={'Host': 'X' * 10000, 'Connection': 'close'})[
                'status'
            ],
            431,
            'Host big',
        )

    def test_http_header_host_port(self):
        self.load('host')

        resp = self.get(
            headers={'Host': 'exmaple.com:7080', 'Connection': 'close'}
        )

        self.assertEqual(resp['status'], 200, 'Host port status')
        self.assertEqual(
            resp['headers']['X-Server-Name'],
            'exmaple.com',
            'Host port SERVER_NAME',
        )
        self.assertEqual(
            resp['headers']['X-Http-Host'],
            'exmaple.com:7080',
            'Host port HTTP_HOST',
        )

    def test_http_header_host_port_empty(self):
        self.load('host')

        resp = self.get(
            headers={'Host': 'exmaple.com:', 'Connection': 'close'}
        )

        self.assertEqual(resp['status'], 200, 'Host port empty status')
        self.assertEqual(
            resp['headers']['X-Server-Name'],
            'exmaple.com',
            'Host port empty SERVER_NAME',
        )
        self.assertEqual(
            resp['headers']['X-Http-Host'],
            'exmaple.com:',
            'Host port empty HTTP_HOST',
        )

    def test_http_header_host_literal(self):
        self.load('host')

        resp = self.get(headers={'Host': '127.0.0.1', 'Connection': 'close'})

        self.assertEqual(resp['status'], 200, 'Host literal status')
        self.assertEqual(
            resp['headers']['X-Server-Name'],
            '127.0.0.1',
            'Host literal SERVER_NAME',
        )

    def test_http_header_host_literal_ipv6(self):
        self.load('host')

        resp = self.get(headers={'Host': '[::1]:7080', 'Connection': 'close'})

        self.assertEqual(resp['status'], 200, 'Host literal ipv6 status')
        self.assertEqual(
            resp['headers']['X-Server-Name'],
            '[::1]',
            'Host literal ipv6 SERVER_NAME',
        )
        self.assertEqual(
            resp['headers']['X-Http-Host'],
            '[::1]:7080',
            'Host literal ipv6 HTTP_HOST',
        )

    def test_http_header_host_trailing_period(self):
        self.load('host')

        resp = self.get(headers={'Host': '127.0.0.1.', 'Connection': 'close'})

        self.assertEqual(resp['status'], 200, 'Host trailing period status')
        self.assertEqual(
            resp['headers']['X-Server-Name'],
            '127.0.0.1',
            'Host trailing period SERVER_NAME',
        )
        self.assertEqual(
            resp['headers']['X-Http-Host'],
            '127.0.0.1.',
            'Host trailing period HTTP_HOST',
        )

    def test_http_header_host_trailing_period_2(self):
        self.load('host')

        resp = self.get(
            headers={'Host': 'EXAMPLE.COM.', 'Connection': 'close'}
        )

        self.assertEqual(resp['status'], 200, 'Host trailing period 2 status')
        self.assertEqual(
            resp['headers']['X-Server-Name'],
            'example.com',
            'Host trailing period 2 SERVER_NAME',
        )
        self.assertEqual(
            resp['headers']['X-Http-Host'],
            'EXAMPLE.COM.',
            'Host trailing period 2 HTTP_HOST',
        )

    def test_http_header_host_case_insensitive(self):
        self.load('host')

        resp = self.get(headers={'Host': 'EXAMPLE.COM', 'Connection': 'close'})

        self.assertEqual(resp['status'], 200, 'Host case insensitive')
        self.assertEqual(
            resp['headers']['X-Server-Name'],
            'example.com',
            'Host case insensitive SERVER_NAME',
        )

    def test_http_header_host_double_dot(self):
        self.load('empty')

        self.assertEqual(
            self.get(headers={'Host': '127.0.0..1', 'Connection': 'close'})[
                'status'
            ],
            400,
            'Host double dot',
        )

    def test_http_header_host_slash(self):
        self.load('empty')

        self.assertEqual(
            self.get(headers={'Host': '/localhost', 'Connection': 'close'})[
                'status'
            ],
            400,
            'Host slash',
        )

    def test_http_header_host_multiple_fields(self):
        self.load('empty')

        self.assertEqual(
            self.get(
                headers={
                    'Host': ['localhost', 'example.com'],
                    'Connection': 'close',
                }
            )['status'],
            400,
            'Host multiple fields',
        )


if __name__ == '__main__':
    TestHTTPHeader.main()