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#!/usr/bin/python
#
# Copyright (C) 2015 Ipsilon project Contributors, for license see COPYING

from helpers.common import IpsilonTestBase  # pylint: disable=relative-import
from helpers.common import WRAP_HOSTNAME  # pylint: disable=relative-import
from helpers.http import HttpSessions  # pylint: disable=relative-import
import os
import pwd
import sys
from string import Template

idp_g = {'TEMPLATES': '${TESTDIR}/templates/install',
         'CONFDIR': '${TESTDIR}/etc',
         'DATADIR': '${TESTDIR}/lib',
         'HTTPDCONFD': '${TESTDIR}/${NAME}/conf.d',
         'STATICDIR': '${ROOTDIR}',
         'BINDIR': '${ROOTDIR}/ipsilon',
         'WSGI_SOCKET_PREFIX': '${TESTDIR}/${NAME}/logs/wsgi'}


idp_a = {'hostname': '${ADDRESS}:${PORT}',
         'admin_user': '${TEST_USER}',
         'system_user': '${TEST_USER}',
         'instance': '${NAME}',
         'secure': 'no',
         'testauth': 'yes',
         'pam': 'no',
         'gssapi': 'yes',
         'ipa': 'no',
         'gssapi_httpd_keytab': '${TESTDIR}/${HTTP_KTNAME}',
         'server_debugging': 'True'}


sp_g = {'HTTPDCONFD': '${TESTDIR}/${NAME}/conf.d',
        'SAML2_TEMPLATE': '${TESTDIR}/templates/install/saml2/sp.conf',
        'SAML2_CONFFILE': '${TESTDIR}/${NAME}/conf.d/ipsilon-saml.conf',
        'SAML2_HTTPDIR': '${TESTDIR}/${NAME}/saml2'}


sp_a = {'hostname': '${ADDRESS}:${PORT}',
        'saml_idp_metadata':
            'http://%s:45080/idp1/saml2/metadata' % WRAP_HOSTNAME,
        'saml_secure_setup': 'False',
        'saml_auth': '/sp',
        'httpd_user': '${TEST_USER}'}

sp2_g = {'HTTPDCONFD': '${TESTDIR}/${NAME}/conf.d',
         'SAML2_TEMPLATE': '${TESTDIR}/templates/install/saml2/sp.conf',
         'SAML2_CONFFILE': '${TESTDIR}/${NAME}/conf.d/ipsilon-saml.conf',
         'SAML2_HTTPDIR': '${TESTDIR}/${NAME}/saml2'}

sp2_a = {'hostname': '${ADDRESS}:${PORT}',
         'saml_idp_url': 'http://idp.ipsilon.dev:45080/idp1',
         'admin_user': '${TEST_USER}',
         'admin_password': '${TESTDIR}/pw.txt',
         'saml_sp_name': 'sp2',
         'saml_secure_setup': 'False',
         'saml_auth': '/sp',
         'httpd_user': '${TEST_USER}'}


def fixup_sp_httpd(httpdir):
    location = """

Alias /sp ${HTTPDIR}/sp

<Directory ${HTTPDIR}/sp>
    Require all granted
</Directory>
"""
    index = """WORKS!"""

    t = Template(location)
    text = t.substitute({'HTTPDIR': httpdir})
    with open(httpdir + '/conf.d/ipsilon-saml.conf', 'a') as f:
        f.write(text)

    os.mkdir(httpdir + '/sp')
    with open(httpdir + '/sp/index.html', 'w') as f:
        f.write(index)


class IpsilonTest(IpsilonTestBase):

    def __init__(self):
        super(IpsilonTest, self).__init__('testgssapi', __file__)

    def setup_servers(self, env=None):
        os.mkdir("%s/ccaches" % self.testdir)

        print "Installing KDC server"
        kdcenv = self.setup_kdc(env)

        print "Creating principals and keytabs"
        self.setup_keys(kdcenv)

        print "Getting a TGT"
        self.kinit_keytab(kdcenv)

        print "Installing IDP server"
        name = 'idp1'
        addr = 'idp.ipsilon.dev'
        port = '45080'
        env.update(kdcenv)
        idp = self.generate_profile(idp_g, idp_a, name, addr, port)
        conf = self.setup_idp_server(idp, name, addr, port, env)

        print "Starting IDP's httpd server"
        self.start_http_server(conf, env)

        print "Installing first SP server"
        name = 'sp1'
        addr = '127.0.0.11'
        port = '45081'
        sp = self.generate_profile(sp_g, sp_a, name, addr, port)
        conf = self.setup_sp_server(sp, name, addr, port, env)
        fixup_sp_httpd(os.path.dirname(conf))

        print "Starting first SP's httpd server"
        self.start_http_server(conf, env)

        print "Installing second SP server"
        name = 'sp2'
        addr = '127.0.0.11'
        port = '45082'
        sp = self.generate_profile(sp2_g, sp2_a, name, addr, port)
        with open(os.path.dirname(sp) + '/pw.txt', 'a') as f:
            f.write('ipsilon')
        conf = self.setup_sp_server(sp, name, addr, port, env)
        os.remove(os.path.dirname(sp) + '/pw.txt')
        fixup_sp_httpd(os.path.dirname(conf))

        print "Starting second SP's httpd server"
        self.start_http_server(conf, env)

if __name__ == '__main__':

    idpname = 'idp1'
    sp1name = 'sp1'
    sp2name = 'sp2'
    user = pwd.getpwuid(os.getuid())[0]

    testdir = os.environ['TESTDIR']

    krb5conf = os.path.join(testdir, 'krb5.conf')
    kenv = {'PATH': '/sbin:/bin:/usr/sbin:/usr/bin',
            'KRB5_CONFIG': krb5conf,
            'KRB5CCNAME': 'FILE:' + os.path.join(testdir, 'ccaches/user')}

    for key in kenv:
        os.environ[key] = kenv[key]

    sess = HttpSessions()
    sess.add_server(idpname, 'http://%s:45080' % WRAP_HOSTNAME, user,
                    'ipsilon')
    sess.add_server(sp1name, 'http://127.0.0.11:45081')
    sess.add_server(sp2name, 'http://127.0.0.11:45082')

    print "testgssapi: Authenticate to IDP ...",
    try:
        sess.auth_to_idp(idpname, krb=True)
    except Exception, e:  # pylint: disable=broad-except
        print >> sys.stderr, " ERROR: %s" % repr(e)
        sys.exit(1)
    print " SUCCESS"

    print "testgssapi: Add first SP Metadata to IDP ...",
    try:
        sess.add_sp_metadata(idpname, sp1name)
    except Exception, e:  # pylint: disable=broad-except
        print >> sys.stderr, " ERROR: %s" % repr(e)
        sys.exit(1)
    print " SUCCESS"

    print "testgssapi: Access first SP Protected Area ...",
    try:
        page = sess.fetch_page(idpname, 'http://127.0.0.11:45081/sp/')
        page.expected_value('text()', 'WORKS!')
    except ValueError, e:
        print >> sys.stderr, " ERROR: %s" % repr(e)
        sys.exit(1)
    print " SUCCESS"

    print "testgssapi: Access second SP Protected Area ...",
    try:
        page = sess.fetch_page(idpname, 'http://127.0.0.11:45082/sp/')
        page.expected_value('text()', 'WORKS!')
    except ValueError, e:
        print >> sys.stderr, " ERROR: %s" % repr(e)
        sys.exit(1)
    print " SUCCESS"