def database_engine(settings_dict):
"""Allow to use aliases for database engines, as well as the default dotted name"""
engine = _default_database_engines.get(
settings_dict["DATABASE_ENGINE"].lower(), settings_dict["DATABASE_ENGINE"]
)
if engine == "django.db.backends.postgresql":
try:
get_distribution("psycopg2-binary")
except DistributionNotFound:
try:
get_distribution("psycopg2")
except DistributionNotFound:
settings_check_results.append(
missing_package("psycopg2-binary", " to use PostgreSQL database")
)
elif engine == "django.db.backends.oracle":
try:
get_distribution("cx_Oracle")
except DistributionNotFound:
settings_check_results.append(
missing_package("cx_Oracle", " to use Oracle database")
)
elif engine == "django.db.backends.mysql":
try:
get_distribution("mysqlclient")
except DistributionNotFound:
try:
get_distribution("pymysql")
except DistributionNotFound:
settings_check_results.append(
missing_package(
"mysqlclient or pymysql", " to use MySQL or MariaDB database"
)
)
return engine
def get_requirements(package_name, parent=None):
try:
yield str(package_name)
d = get_distribution(package_name)
for r in d.requires():
for required_package in get_requirements(r,
parent=package_name):
yield str(required_package)
except DistributionNotFound:
settings_check_results.append(
missing_package(str(package_name), " by %s" % parent))
except VersionConflict:
settings_check_results.append(
missing_package(str(package_name), " by %s" % parent))
def process_radius(self, settings_dict):
if not settings_dict["RADIUS_SERVER"]:
return []
try:
get_distribution("django-radius")
except DistributionNotFound:
settings_check_results.append(
missing_package("django-radius", " to use RADIUS authentication")
)
return []
return ["radiusauth.backends.RADIUSBackend"]
def process_django_ldap(self, settings_dict):
if not settings_dict["AUTH_LDAP_SERVER_URI"]:
return []
try:
get_distribution("django-auth-ldap")
except DistributionNotFound:
settings_check_results.append(
missing_package("django-auth-ldap", " to use LDAP authentication")
)
return []
return ["django_auth_ldap.backend.LDAPBackend"]
def process_pam(self, settings_dict):
if not settings_dict["USE_PAM_AUTHENTICATION"]:
return []
try:
get_distribution("django_pam")
except DistributionNotFound:
settings_check_results.append(
missing_package("django-pam", " to use PAM authentication")
)
return []
# check if the current user is in the shadow group
username = pwd.getpwuid(os.getuid()).pw_name
if not any(
x.gr_name == "shadow" and username in x.gr_mem for x in grp.getgrall()
):
settings_check_results.append(
Error(
'The user "%s" must belong to the "shadow" group to use PAM '
"authentication." % username,
obj="configuration",
)
)
return []
return ["django_pam.auth.backends.PAMBackend"]