def disable_https(port_maps, namespace):
'''
Ensure HTTPS reverse proxying is disables for given port mappings
port_maps: dict: of ext -> int port mappings
namespace: str: name of chamr
'''
juju_log('INFO', 'Ensuring HTTPS disabled for {}'.format(port_maps))
if (not os.path.exists('/etc/apache2') or
not os.path.exists(os.path.join('/etc/apache2/ssl', namespace))):
return
http_restart = False
for ext_port in port_maps.keys():
if os.path.exists(os.path.join(APACHE_SITE_DIR,
"{}_{}".format(namespace,
ext_port))):
juju_log('INFO',
"Disabling HTTPS reverse proxy"
" for {} {}.".format(namespace,
ext_port))
if (RELOAD_CHECK in
subprocess.check_output(['a2dissite',
'{}_{}'.format(namespace,
ext_port)])):
http_restart = True
if http_restart:
restart(['apache2'])
def restart(self, kwargs):
restart()
def enable_https(port_maps, namespace, cert, key, ca_cert=None):
'''
For a given number of port mappings, configures apache2
HTTPs local reverse proxying using certficates and keys provided in
either configuration data (preferred) or relation data. Assumes ports
are not in use (calling charm should ensure that).
port_maps: dict: external to internal port mappings
namespace: str: name of charm
'''
def _write_if_changed(path, new_content):
content = None
if os.path.exists(path):
with open(path, 'r') as f:
content = f.read().strip()
if content != new_content:
with open(path, 'w') as f:
f.write(new_content)
return True
else:
return False
juju_log('INFO', "Enabling HTTPS for port mappings: {}".format(port_maps))
http_restart = False
if cert:
cert = b64decode(cert)
if key:
key = b64decode(key)
if ca_cert:
ca_cert = b64decode(ca_cert)
if not cert and not key:
juju_log('ERROR',
"Expected but could not find SSL certificate data, not "
"configuring HTTPS!")
return False
install('apache2')
if RELOAD_CHECK in subprocess.check_output(['a2enmod', 'ssl',
'proxy', 'proxy_http']):
http_restart = True
ssl_dir = os.path.join('/etc/apache2/ssl', namespace)
if not os.path.exists(ssl_dir):
os.makedirs(ssl_dir)
if (_write_if_changed(os.path.join(ssl_dir, 'cert'), cert)):
http_restart = True
if (_write_if_changed(os.path.join(ssl_dir, 'key'), key)):
http_restart = True
os.chmod(os.path.join(ssl_dir, 'key'), 0600)
install_ca_cert(ca_cert)
sites_dir = '/etc/apache2/sites-available'
for ext_port, int_port in port_maps.items():
juju_log('INFO',
'Creating apache2 reverse proxy vhost'
' for {}:{}'.format(ext_port,
int_port))
site = "{}_{}".format(namespace, ext_port)
site_path = os.path.join(sites_dir, site)
with open(site_path, 'w') as fsite:
context = {
"ext": ext_port,
"int": int_port,
"namespace": namespace,
"private_address": get_host_ip()
}
fsite.write(render_template(SITE_TEMPLATE,
context))
if RELOAD_CHECK in subprocess.check_output(['a2ensite', site]):
http_restart = True
if http_restart:
restart('apache2')
return True
