# Source code for cherrypy.test.modpy

    """Wrapper for mod_python, for use as a CherryPy HTTP server when testing.

    To autostart modpython, the "apache" executable or script must be
    on your system path, or you must override the global APACHE_PATH.
    On some platforms, "apache" may be called "apachectl" or "apache2ctl"--
    create a symlink to them if needed.

    If you wish to test the WSGI interface instead of our _cpmodpy interface,
    you also need the 'modpython_gateway' module at:
    http://projects.amor.org/misc/wiki/ModPythonGateway

    KNOWN BUGS
    ==========

    1. Apache processes Range headers automatically; CherryPy's truncated
        output is then truncated again by Apache. See test_core.testRanges.
        This was worked around in http://www.cherrypy.dev/changeset/1319.
    2. Apache does not allow custom HTTP methods like CONNECT as per the spec.
        See test_core.testHTTPMethods.
    3. Max request header and body settings do not work with Apache.
    4. Apache replaces status "reason phrases" automatically. For example,
        CherryPy may set "304 Not modified" but Apache will write out
        "304 Not Modified" (capital "M").
    5. Apache does not allow custom error codes as per the spec.
    6. Apache (or perhaps modpython, or modpython_gateway) unquotes %xx in the
        Request-URI too early.
    7. mod_python will not read request bodies which use the "chunked"
        transfer-coding (it passes REQUEST_CHUNKED_ERROR to ap_setup_client_block
        instead of REQUEST_CHUNKED_DECHUNK, see Apache2's http_protocol.c and
        mod_python's requestobject.c).
    8. Apache will output a "Content-Length: 0" response header even if there's
        no response entity body. This isn't really a bug; it just differs from
        the CherryPy default.
    """

    import os
    import re

    import cherrypy
    from cherrypy.test import helper

    curdir = os.path.join(os.getcwd(), os.path.dirname(__file__))

    def read_process(cmd, args=''):
        pipein, pipeout = os.popen4('%s %s' % (cmd, args))
        try:
            firstline = pipeout.readline()
            if (re.search(r'(not recognized|No such file|not found)', firstline,
                          re.IGNORECASE)):
                raise IOError('%s must be on your system path.' % cmd)
            output = firstline + pipeout.read()
        finally:
            pipeout.close()
        return output

    APACHE_PATH = 'httpd'
    CONF_PATH = 'test_mp.conf'

    conf_modpython_gateway = """
    # Apache2 server conf file for testing CherryPy with modpython_gateway.

    ServerName 127.0.0.1
    DocumentRoot "/"
    Listen %(port)s
    LoadModule python_module modules/mod_python.so

    SetHandler python-program
    PythonFixupHandler cherrypy.test.modpy::wsgisetup
    PythonOption testmod %(modulename)s
    PythonHandler modpython_gateway::handler
    PythonOption wsgi.application cherrypy::tree
    PythonOption socket_host %(host)s
    PythonDebug On
    """

    conf_cpmodpy = """
    # Apache2 server conf file for testing CherryPy with _cpmodpy.

    ServerName 127.0.0.1
    DocumentRoot "/"
    Listen %(port)s
    LoadModule python_module modules/mod_python.so

    SetHandler python-program
    PythonFixupHandler cherrypy.test.modpy::cpmodpysetup
    PythonHandler cherrypy._cpmodpy::handler
    PythonOption cherrypy.setup cherrypy.test.%(modulename)s::setup_server
    PythonOption socket_host %(host)s
    PythonDebug On
    """

    class ModPythonSupervisor(helper.Supervisor):

        using_apache = True
        using_wsgi = False
        template = None

        def __str__(self):
            return 'ModPython Server on %s:%s' % (self.host, self.port)

        def start(self, modulename):
            mpconf = CONF_PATH
            if not os.path.isabs(mpconf):
                mpconf = os.path.join(curdir, mpconf)

            with open(mpconf, 'wb') as f:
                f.write(self.template %
                        {'port': self.port, 'modulename': modulename,
                         'host': self.host})

            result = read_process(APACHE_PATH, '-k start -f %s' % mpconf)
            if result:
                print(result)

        def stop(self):
            """Gracefully shutdown a server that is serving forever."""
            read_process(APACHE_PATH, '-k stop')

    loaded = False

    def wsgisetup(req):
        global loaded
        if not loaded:
            loaded = True
            options = req.get_options()

            cherrypy.config.update({
                'log.error_file': os.path.join(curdir, 'test.log'),
                'environment': 'test_suite',
                'server.socket_host': options['socket_host'],
            })

            modname = options['testmod']
            mod = __import__(modname, globals(), locals(), [''])
            mod.setup_server()

            cherrypy.server.unsubscribe()
            cherrypy.engine.start()
        from mod_python import apache
        return apache.OK

    def cpmodpysetup(req):
        global loaded
        if not loaded:
            loaded = True
            options = req.get_options()

            cherrypy.config.update({
                'log.error_file': os.path.join(curdir, 'test.log'),
                'environment': 'test_suite',
                'server.socket_host': options['socket_host'],
            })
        from mod_python import apache
        return apache.OK