import re
import pytest

from .conf import TlsTestConf
from pyhttpd.env import HttpdTestEnv


class TestProxySSL:

    @pytest.fixture(autouse=True, scope='class')
    def _class_scope(self, env):
        # add vhosts a+b and a ssl proxy from a to b
        if not HttpdTestEnv.has_shared_module("tls"):
            myoptions="SSLOptions +StdEnvVars"
            myssl="mod_ssl"
        else:
            myoptions="TLSOptions +StdEnvVars"
            myssl="mod_tls"
        conf = TlsTestConf(env=env, extras={
            'base': [
                "LogLevel proxy:trace1 proxy_http:trace1 ssl:trace1 proxy_http2:trace1",
                f"<Proxy https://127.0.0.1:{env.https_port}/>",
                "    SSLProxyEngine on",
                "    SSLProxyVerify require",
                f"    SSLProxyCACertificateFile {env.ca.cert_file}",
                "  ProxyPreserveHost on",
                "</Proxy>",
                f"<Proxy https://localhost:{env.https_port}/>",
                "    ProxyPreserveHost on",
                "</Proxy>",
                f"<Proxy h2://127.0.0.1:{env.https_port}/>",
                "    SSLProxyEngine on",
                "    SSLProxyVerify require",
                f"    SSLProxyCACertificateFile {env.ca.cert_file}",
                "    ProxyPreserveHost on",
                "</Proxy>",
                ],
            env.domain_b: [
                "Protocols h2 http/1.1",
                f'ProxyPass /proxy-ssl/ https://127.0.0.1:{env.https_port}/',
                f'ProxyPass /proxy-local/ https://localhost:{env.https_port}/',
                f'ProxyPass /proxy-h2-ssl/ h2://127.0.0.1:{env.https_port}/',
                myoptions,
            ],
        })
        conf.add_tls_vhosts(domains=[env.domain_a, env.domain_b], ssl_module=myssl)
        conf.install()
        assert env.apache_restart() == 0

    def test_tls_14_proxy_ssl_get(self, env):
        data = env.tls_get_json(env.domain_b, "/proxy-ssl/index.json")
        assert data == {'domain': env.domain_b}

    def test_tls_14_proxy_ssl_get_local(self, env):
        # does not work, since SSLProxy* not configured
        data = env.tls_get_json(env.domain_b, "/proxy-local/index.json")
        assert data is None
        #
        env.httpd_error_log.ignore_recent(
            lognos = [
                "AH01961",  # failed to enable ssl support [Hint: if using mod_ssl, see SSLProxyEngine]
                "AH00961"   # failed to enable ssl support (mod_proxy)
            ]
        )

    def test_tls_14_proxy_ssl_h2_get(self, env):
        r = env.tls_get(env.domain_b, "/proxy-h2-ssl/index.json")
        assert r.exit_code == 0
        assert r.json == {'domain': env.domain_b}

    @pytest.mark.parametrize("name, value", [
        ("SERVER_NAME", "b.mod-tls.test"),
        ("SSL_SESSION_RESUMED", "Initial"),
        ("SSL_SECURE_RENEG", "false"),
        ("SSL_COMPRESS_METHOD", "NULL"),
        ("SSL_CIPHER_EXPORT", "false"),
        ("SSL_CLIENT_VERIFY", "NONE"),
    ])
    def test_tls_14_proxy_tsl_vars_const(self, env, name: str, value: str):
        if not HttpdTestEnv.has_shared_module("tls"):
            return
        r = env.tls_get(env.domain_b, f"/proxy-ssl/vars.py?name={name}")
        assert r.exit_code == 0, r.stderr
        assert r.json == {name: value}, r.stdout

    @pytest.mark.parametrize("name, value", [
        ("SERVER_NAME", "b.mod-tls.test"),
        ("SSL_SESSION_RESUMED", "Initial"),
        ("SSL_SECURE_RENEG", "true"),
        ("SSL_COMPRESS_METHOD", "NULL"),
        ("SSL_CIPHER_EXPORT", "false"),
        ("SSL_CLIENT_VERIFY", "NONE"),
    ])
    def test_tls_14_proxy_ssl_vars_const(self, env, name: str, value: str):
        if HttpdTestEnv.has_shared_module("tls"):
            return
        r = env.tls_get(env.domain_b, f"/proxy-ssl/vars.py?name={name}")
        assert r.exit_code == 0, r.stderr
        assert r.json == {name: value}, r.stdout

    @pytest.mark.parametrize("name, pattern", [
        ("SSL_VERSION_INTERFACE", r'mod_tls/\d+\.\d+\.\d+'),
        ("SSL_VERSION_LIBRARY", r'rustls-ffi/\d+\.\d+\.\d+/rustls/\d+\.\d+(\.\d+)?'),
    ])
    def test_tls_14_proxy_tsl_vars_match(self, env, name: str, pattern: str):
        if not HttpdTestEnv.has_shared_module("tls"):
            return
        r = env.tls_get(env.domain_b, f"/proxy-ssl/vars.py?name={name}")
        assert r.exit_code == 0, r.stderr
        assert name in r.json
        assert re.match(pattern, r.json[name]), r.json

    @pytest.mark.parametrize("name, pattern", [
        ("SSL_VERSION_INTERFACE", r'mod_ssl/\d+\.\d+\.\d+'),
        ("SSL_VERSION_LIBRARY", r'OpenSSL/\d+\.\d+\.\d+'),
    ])
    def test_tls_14_proxy_ssl_vars_match(self, env, name: str, pattern: str):
        if HttpdTestEnv.has_shared_module("tls"):
            return
        r = env.tls_get(env.domain_b, f"/proxy-ssl/vars.py?name={name}")
        assert r.exit_code == 0, r.stderr
        assert name in r.json
        assert re.match(pattern, r.json[name]), r.json