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import pytest
from unit.applications.lang.python import ApplicationPython

prerequisites = {'modules': {'python': 'any'}}

client = ApplicationPython()


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

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

    assert resp['status'] == 200, 'value leading sp status'
    assert (
        resp['headers']['Custom-Header'] == ','
    ), 'value leading sp custom header'


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

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

    assert resp['status'] == 200, 'value leading htab status'
    assert (
        resp['headers']['Custom-Header'] == ','
    ), 'value leading htab custom header'


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

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

    assert resp['status'] == 200, 'value trailing sp status'
    assert (
        resp['headers']['Custom-Header'] == ','
    ), 'value trailing sp custom header'


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

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

    assert resp['status'] == 200, 'value trailing htab status'
    assert (
        resp['headers']['Custom-Header'] == ','
    ), 'value trailing htab custom header'


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

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

    assert resp['status'] == 200, 'value both sp status'
    assert (
        resp['headers']['Custom-Header'] == ','
    ), 'value both sp custom header'


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

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

    assert resp['status'] == 200, 'value both htab status'
    assert (
        resp['headers']['Custom-Header'] == ','
    ), 'value both htab custom header'


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

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

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


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

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

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

    assert resp['status'] == 200, 'value chars edge status'
    assert resp['headers']['Custom-Header'] == '\xFF', 'value chars edge'


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

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

""",
        raw=True,
    )

    assert resp['status'] == 400, 'value chars below'


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

    assert (
        client.get(
            headers={
                'Host': 'localhost',
                ' Custom-Header': 'blah',
                'Connection': 'close',
            }
        )['status']
        == 400
    ), 'field leading sp'


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

    assert (
        client.get(
            headers={
                'Host': 'localhost',
                '\tCustom-Header': 'blah',
                'Connection': 'close',
            }
        )['status']
        == 400
    ), 'field leading htab'


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

    assert (
        client.get(
            headers={
                'Host': 'localhost',
                'Custom-Header ': 'blah',
                'Connection': 'close',
            }
        )['status']
        == 400
    ), 'field trailing sp'


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

    assert (
        client.get(
            headers={
                'Host': 'localhost',
                'Custom-Header\t': 'blah',
                'Connection': 'close',
            }
        )['status']
        == 400
    ), 'field trailing htab'


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

    assert (
        client.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():
    client.load('empty')

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


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

    assert (
        client.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():
    client.load('empty')

    assert (
        client.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():
    client.load('empty')

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


@pytest.mark.skip('not yet')
def test_http_header_host_absent():
    client.load('host')

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

    assert resp['status'] == 400, 'Host absent status'


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

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

    assert resp['status'] == 200, 'Host empty status'
    assert resp['headers']['X-Server-Name'] != '', 'Host empty SERVER_NAME'


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

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


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

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

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


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

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

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


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

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

    assert resp['status'] == 200, 'Host literal status'
    assert (
        resp['headers']['X-Server-Name'] == '127.0.0.1'
    ), 'Host literal SERVER_NAME'


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

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

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


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

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

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


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

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

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


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

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

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


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

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


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

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


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

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


def test_http_discard_unsafe_fields():
    client.load('header_fields')

    def check_status(header):
        resp = client.get(
            headers={
                'Host': 'localhost',
                header: 'blah',
                'Connection': 'close',
            }
        )

        assert resp['status'] == 200
        return resp

    resp = check_status("!Custom-Header")
    assert 'CUSTOM' not in resp['headers']['All-Headers']

    resp = check_status("Custom_Header")
    assert 'CUSTOM' not in resp['headers']['All-Headers']

    assert 'success' in client.conf(
        {'http': {'discard_unsafe_fields': False}},
        'settings',
    )

    resp = check_status("!#$%&'*+.^`|~Custom_Header")
    assert 'CUSTOM' in resp['headers']['All-Headers']

    assert 'success' in client.conf(
        {'http': {'discard_unsafe_fields': True}},
        'settings',
    )

    resp = check_status("!Custom-Header")
    assert 'CUSTOM' not in resp['headers']['All-Headers']

    resp = check_status("Custom_Header")
    assert 'CUSTOM' not in resp['headers']['All-Headers']