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community.general/lib/ansible/modules/database/postgresql/postgresql_user.py
Strahinja Kustudic 32d6a354d7 postgresql_user: set encrypted as default and fix empty password reporting changed (#36931) 
* Set encrypted as default and fix empty password reporting changed

* Starting with Postgres 10 `UNENCRYPTED` passwords are removed and
because of that this module fails with the default `encrypted=no`.
Also encrypted passwords are suported since version 7.2
(https://www.postgresql.org/docs/7.2/static/sql-createuser.html) which
went EOL in 2007 and since 7.3 it is the default. Because of this it
makes a lot more sense to make `encrypted=yes` the default. This won't
break backward compatibility, the module would just update the user's
password in the DB in the hashed format and everything else will work
like before. It's also a security bad practice to store passwords in
plain text. fixes #25823
* There was also a bug with `encrypted=yes` and an empty password always
reported as changed.
* Improved documentation for `encrypted`/`password` parameters, and
removed some obsolete notes about passlib.

* Fix clearing user's password to work with all versions of Postgres

* Add tests for clearing the user password

* Fix documentation atfer rebase

* Add changelog fragment
2018-05-21 14:49:44 -05:00

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#!/usr/bin/python
# -*- coding: utf-8 -*-
# Copyright: Ansible Project
# GNU General Public License v3.0+ (see COPYING or https://www.gnu.org/licenses/gpl-3.0.txt)
from __future__ import absolute_import, division, print_function
__metaclass__ = type
ANSIBLE_METADATA = {
'metadata_version': '1.1',
'status': ['stableinterface'],
'supported_by': 'community'
}
DOCUMENTATION = '''
---
module: postgresql_user
short_description: Adds or removes a users (roles) from a PostgreSQL database.
description:
- Add or remove PostgreSQL users (roles) from a remote host and, optionally,
grant the users access to an existing database or tables.
- The fundamental function of the module is to create, or delete, roles from
a PostgreSQL cluster. Privilege assignment, or removal, is an optional
step, which works on one database at a time. This allows for the module to
be called several times in the same module to modify the permissions on
different databases, or to grant permissions to already existing users.
- A user cannot be removed until all the privileges have been stripped from
the user. In such situation, if the module tries to remove the user it
will fail. To avoid this from happening the fail_on_user option signals
the module to try to remove the user, but if not possible keep going; the
module will report if changes happened and separately if the user was
removed or not.
version_added: "0.6"
options:
name:
description:
- Name of the user (role) to add or remove.
required: true
password:
description:
- Set the user's password, before 1.4 this was required.
- Password can be passed unhashed or hashed (MD5-hashed).
- Unhashed password will automatically be hashed when saved into the
database if C(encrypted) parameter is set, otherwise it will be save in
plain text format.
- When passing a hashed password it must be generated with the format
C('str["md5"] + md5[ password + username ]'), resulting in a total of
35 characters. An easy way to do this is C(echo "md5$(echo -n
'verysecretpasswordJOE' | md5sum)").
- Note that if the provided password string is already in MD5-hashed
format, then it is used as-is, regardless of C(encrypted) parameter.
db:
description:
- Name of database where permissions will be granted.
fail_on_user:
description:
- If C(yes), fail when user can't be removed. Otherwise just log and
continue.
default: 'yes'
type: bool
port:
description:
- Database port to connect to.
default: 5432
login_user:
description:
- User (role) used to authenticate with PostgreSQL.
default: postgres
login_password:
description:
- Password used to authenticate with PostgreSQL.
login_host:
description:
- Host running PostgreSQL.
default: localhost
login_unix_socket:
description:
- Path to a Unix domain socket for local connections.
priv:
description:
- "PostgreSQL privileges string in the format: C(table:priv1,priv2)."
role_attr_flags:
description:
- "PostgreSQL role attributes string in the format: CREATEDB,CREATEROLE,SUPERUSER."
- Note that '[NO]CREATEUSER' is deprecated.
choices: ["[NO]SUPERUSER", "[NO]CREATEROLE", "[NO]CREATEDB", "[NO]INHERIT", "[NO]LOGIN", "[NO]REPLICATION", "[NO]BYPASSRLS"]
state:
description:
- The user (role) state.
default: present
choices: ["present", "absent"]
encrypted:
description:
- Whether the password is stored hashed in the database. Passwords can be
passed already hashed or unhashed, and postgresql ensures the stored
password is hashed when C(encrypted) is set.
- "Note: Postgresql 10 and newer doesn't support unhashed passwords."
- Previous to Ansible 2.6, this was C(no) by default.
default: 'yes'
type: bool
version_added: '1.4'
expires:
description:
- The date at which the user's password is to expire.
- If set to C('infinity'), user's password never expire.
- Note that this value should be a valid SQL date and time type.
version_added: '1.4'
no_password_changes:
description:
- If C(yes), don't inspect database for password changes. Effective when
C(pg_authid) is not accessible (such as AWS RDS). Otherwise, make
password changes as necessary.
default: 'no'
type: bool
version_added: '2.0'
ssl_mode:
description:
- Determines whether or with what priority a secure SSL TCP/IP connection
will be negotiated with the server.
- See U(https://www.postgresql.org/docs/current/static/libpq-ssl.html) for
more information on the modes.
- Default of C(prefer) matches libpq default.
default: prefer
choices: ["disable", "allow", "prefer", "require", "verify-ca", "verify-full"]
version_added: '2.3'
ssl_rootcert:
description:
- Specifies the name of a file containing SSL certificate authority (CA)
certificate(s). If the file exists, the server's certificate will be
verified to be signed by one of these authorities.
version_added: '2.3'
conn_limit:
description:
- Specifies the user connection limit.
version_added: '2.4'
notes:
- The default authentication assumes that you are either logging in as or
sudo'ing to the postgres account on the host.
- This module uses psycopg2, a Python PostgreSQL database adapter. You must
ensure that psycopg2 is installed on the host before using this module. If
the remote host is the PostgreSQL server (which is the default case), then
PostgreSQL must also be installed on the remote host. For Ubuntu-based
systems, install the postgresql, libpq-dev, and python-psycopg2 packages
on the remote host before using this module.
- If you specify PUBLIC as the user, then the privilege changes will apply
to all users. You may not specify password or role_attr_flags when the
PUBLIC user is specified.
- The ssl_rootcert parameter requires at least Postgres version 8.4 and
I(psycopg2) version 2.4.3.
requirements: [ psycopg2 ]
author: "Ansible Core Team"
'''
EXAMPLES = '''
# Create django user and grant access to database and products table
- postgresql_user:
db: acme
name: django
password: ceec4eif7ya
priv: "CONNECT/products:ALL"
# Create rails user, set its password (MD5-hashed) and grant privilege to create other
# databases and demote rails from super user status
- postgresql_user:
name: rails
password: md59543f1d82624df2b31672ec0f7050460
role_attr_flags: CREATEDB,NOSUPERUSER
# Remove test user privileges from acme
- postgresql_user:
db: acme
name: test
priv: "ALL/products:ALL"
state: absent
fail_on_user: no
# Remove test user from test database and the cluster
- postgresql_user:
db: test
name: test
priv: ALL
state: absent
# Set user's password with no expire date
- postgresql_user:
db: acme
name: django
password: mysupersecretword
priv: "CONNECT/products:ALL"
expire: infinity
# Example privileges string format
# INSERT,UPDATE/table:SELECT/anothertable:ALL
# Remove an existing user's password
- postgresql_user:
db: test
user: test
password: ""
'''
import itertools
import re
import traceback
from hashlib import md5
try:
import psycopg2
import psycopg2.extras
except ImportError:
postgresqldb_found = False
else:
postgresqldb_found = True
from ansible.module_utils.basic import AnsibleModule
from ansible.module_utils.database import pg_quote_identifier, SQLParseError
from ansible.module_utils._text import to_bytes, to_native
from ansible.module_utils.six import iteritems
FLAGS = ('SUPERUSER', 'CREATEROLE', 'CREATEDB', 'INHERIT', 'LOGIN', 'REPLICATION')
FLAGS_BY_VERSION = {'BYPASSRLS': 90500}
VALID_PRIVS = dict(table=frozenset(('SELECT', 'INSERT', 'UPDATE', 'DELETE', 'TRUNCATE', 'REFERENCES', 'TRIGGER', 'ALL')),
database=frozenset(
('CREATE', 'CONNECT', 'TEMPORARY', 'TEMP', 'ALL')),
)
# map to cope with idiosyncracies of SUPERUSER and LOGIN
PRIV_TO_AUTHID_COLUMN = dict(SUPERUSER='rolsuper', CREATEROLE='rolcreaterole',
CREATEDB='rolcreatedb', INHERIT='rolinherit', LOGIN='rolcanlogin',
REPLICATION='rolreplication', BYPASSRLS='rolbypassrls')
class InvalidFlagsError(Exception):
pass
class InvalidPrivsError(Exception):
pass
# ===========================================
# PostgreSQL module specific support methods.
#
def user_exists(cursor, user):
# The PUBLIC user is a special case that is always there
if user == 'PUBLIC':
return True
query = "SELECT rolname FROM pg_roles WHERE rolname=%(user)s"
cursor.execute(query, {'user': user})
return cursor.rowcount > 0
def user_add(cursor, user, password, role_attr_flags, encrypted, expires, conn_limit):
"""Create a new database user (role)."""
# Note: role_attr_flags escaped by parse_role_attrs and encrypted is a
# literal
query_password_data = dict(password=password, expires=expires)
query = ['CREATE USER %(user)s' %
{"user": pg_quote_identifier(user, 'role')}]
if password is not None and password != '':
query.append("WITH %(crypt)s" % {"crypt": encrypted})
query.append("PASSWORD %(password)s")
if expires is not None:
query.append("VALID UNTIL %(expires)s")
if conn_limit is not None:
query.append("CONNECTION LIMIT %(conn_limit)s" % {"conn_limit": conn_limit})
query.append(role_attr_flags)
query = ' '.join(query)
cursor.execute(query, query_password_data)
return True
def user_should_we_change_password(current_role_attrs, user, password, encrypted):
"""Check if we should change the user's password.
Compare the proposed password with the existing one, comparing
hashes if encrypted. If we can't access it assume yes.
"""
if current_role_attrs is None:
# on some databases, E.g. AWS RDS instances, there is no access to
# the pg_authid relation to check the pre-existing password, so we
# just assume password is different
return True
# Do we actually need to do anything?
pwchanging = False
if password is not None:
# Empty password means that the role shouldn't have a password, which
# means we need to check if the current password is None.
if password == '':
if current_role_attrs['rolpassword'] is not None:
pwchanging = True
# 32: MD5 hashes are represented as a sequence of 32 hexadecimal digits
# 3: The size of the 'md5' prefix
# When the provided password looks like a MD5-hash, value of
# 'encrypted' is ignored.
elif (password.startswith('md5') and len(password) == 32 + 3) or encrypted == 'UNENCRYPTED':
if password != current_role_attrs['rolpassword']:
pwchanging = True
elif encrypted == 'ENCRYPTED':
hashed_password = 'md5{0}'.format(md5(to_bytes(password) + to_bytes(user)).hexdigest())
if hashed_password != current_role_attrs['rolpassword']:
pwchanging = True
return pwchanging
def user_alter(db_connection, module, user, password, role_attr_flags, encrypted, expires, no_password_changes, conn_limit):
"""Change user password and/or attributes. Return True if changed, False otherwise."""
changed = False
cursor = db_connection.cursor(cursor_factory=psycopg2.extras.DictCursor)
# Note: role_attr_flags escaped by parse_role_attrs and encrypted is a
# literal
if user == 'PUBLIC':
if password is not None:
module.fail_json(msg="cannot change the password for PUBLIC user")
elif role_attr_flags != '':
module.fail_json(msg="cannot change the role_attr_flags for PUBLIC user")
else:
return False
# Handle passwords.
if not no_password_changes and (password is not None or role_attr_flags != '' or expires is not None or conn_limit is not None):
# Select password and all flag-like columns in order to verify changes.
try:
select = "SELECT * FROM pg_authid where rolname=%(user)s"
cursor.execute(select, {"user": user})
# Grab current role attributes.
current_role_attrs = cursor.fetchone()
except psycopg2.ProgrammingError:
current_role_attrs = None
db_connection.rollback()
pwchanging = user_should_we_change_password(current_role_attrs, user, password, encrypted)
if current_role_attrs is None:
try:
# AWS RDS instances does not allow user to access pg_authid
# so try to get current_role_attrs from pg_roles tables
select = "SELECT * FROM pg_roles where rolname=%(user)s"
cursor.execute(select, {"user": user})
# Grab current role attributes from pg_roles
current_role_attrs = cursor.fetchone()
except psycopg2.ProgrammingError as e:
db_connection.rollback()
module.fail_json(msg="Failed to get role details for current user %s: %s" % (user, e))
role_attr_flags_changing = False
if role_attr_flags:
role_attr_flags_dict = {}
for r in role_attr_flags.split(' '):
if r.startswith('NO'):
role_attr_flags_dict[r.replace('NO', '', 1)] = False
else:
role_attr_flags_dict[r] = True
for role_attr_name, role_attr_value in role_attr_flags_dict.items():
if current_role_attrs[PRIV_TO_AUTHID_COLUMN[role_attr_name]] != role_attr_value:
role_attr_flags_changing = True
if expires is not None:
cursor.execute("SELECT %s::timestamptz;", (expires,))
expires_with_tz = cursor.fetchone()[0]
expires_changing = expires_with_tz != current_role_attrs.get('rolvaliduntil')
else:
expires_changing = False
conn_limit_changing = (conn_limit is not None and conn_limit != current_role_attrs['rolconnlimit'])
if not pwchanging and not role_attr_flags_changing and not expires_changing and not conn_limit_changing:
return False
alter = ['ALTER USER %(user)s' % {"user": pg_quote_identifier(user, 'role')}]
if pwchanging:
if password != '':
alter.append("WITH %(crypt)s" % {"crypt": encrypted})
alter.append("PASSWORD %(password)s")
else:
alter.append("WITH PASSWORD NULL")
alter.append(role_attr_flags)
elif role_attr_flags:
alter.append('WITH %s' % role_attr_flags)
if expires is not None:
alter.append("VALID UNTIL %(expires)s")
if conn_limit is not None:
alter.append("CONNECTION LIMIT %(conn_limit)s" % {"conn_limit": conn_limit})
query_password_data = dict(password=password, expires=expires)
try:
cursor.execute(' '.join(alter), query_password_data)
changed = True
except psycopg2.InternalError as e:
if e.pgcode == '25006':
# Handle errors due to read-only transactions indicated by pgcode 25006
# ERROR: cannot execute ALTER ROLE in a read-only transaction
changed = False
module.fail_json(msg=e.pgerror, exception=traceback.format_exc())
return changed
else:
raise psycopg2.InternalError(e)
elif no_password_changes and role_attr_flags != '':
# Grab role information from pg_roles instead of pg_authid
select = "SELECT * FROM pg_roles where rolname=%(user)s"
cursor.execute(select, {"user": user})
# Grab current role attributes.
current_role_attrs = cursor.fetchone()
role_attr_flags_changing = False
if role_attr_flags:
role_attr_flags_dict = {}
for r in role_attr_flags.split(' '):
if r.startswith('NO'):
role_attr_flags_dict[r.replace('NO', '', 1)] = False
else:
role_attr_flags_dict[r] = True
for role_attr_name, role_attr_value in role_attr_flags_dict.items():
if current_role_attrs[PRIV_TO_AUTHID_COLUMN[role_attr_name]] != role_attr_value:
role_attr_flags_changing = True
if not role_attr_flags_changing:
return False
alter = ['ALTER USER %(user)s' %
{"user": pg_quote_identifier(user, 'role')}]
if role_attr_flags:
alter.append('WITH %s' % role_attr_flags)
try:
cursor.execute(' '.join(alter))
except psycopg2.InternalError as e:
if e.pgcode == '25006':
# Handle errors due to read-only transactions indicated by pgcode 25006
# ERROR: cannot execute ALTER ROLE in a read-only transaction
changed = False
module.fail_json(msg=e.pgerror, exception=traceback.format_exc())
return changed
else:
raise psycopg2.InternalError(e)
# Grab new role attributes.
cursor.execute(select, {"user": user})
new_role_attrs = cursor.fetchone()
# Detect any differences between current_ and new_role_attrs.
changed = current_role_attrs != new_role_attrs
return changed
def user_delete(cursor, user):
"""Try to remove a user. Returns True if successful otherwise False"""
cursor.execute("SAVEPOINT ansible_pgsql_user_delete")
try:
cursor.execute("DROP USER %s" % pg_quote_identifier(user, 'role'))
except:
cursor.execute("ROLLBACK TO SAVEPOINT ansible_pgsql_user_delete")
cursor.execute("RELEASE SAVEPOINT ansible_pgsql_user_delete")
return False
cursor.execute("RELEASE SAVEPOINT ansible_pgsql_user_delete")
return True
def has_table_privileges(cursor, user, table, privs):
"""
Return the difference between the privileges that a user already has and
the privileges that they desire to have.
:returns: tuple of:
* privileges that they have and were requested
* privileges they currently hold but were not requested
* privileges requested that they do not hold
"""
cur_privs = get_table_privileges(cursor, user, table)
have_currently = cur_privs.intersection(privs)
other_current = cur_privs.difference(privs)
desired = privs.difference(cur_privs)
return (have_currently, other_current, desired)
def get_table_privileges(cursor, user, table):
if '.' in table:
schema, table = table.split('.', 1)
else:
schema = 'public'
query = '''SELECT privilege_type FROM information_schema.role_table_grants
WHERE grantee=%s AND table_name=%s AND table_schema=%s'''
cursor.execute(query, (user, table, schema))
return frozenset([x[0] for x in cursor.fetchall()])
def grant_table_privileges(cursor, user, table, privs):
# Note: priv escaped by parse_privs
privs = ', '.join(privs)
query = 'GRANT %s ON TABLE %s TO %s' % (
privs, pg_quote_identifier(table, 'table'), pg_quote_identifier(user, 'role'))
cursor.execute(query)
def revoke_table_privileges(cursor, user, table, privs):
# Note: priv escaped by parse_privs
privs = ', '.join(privs)
query = 'REVOKE %s ON TABLE %s FROM %s' % (
privs, pg_quote_identifier(table, 'table'), pg_quote_identifier(user, 'role'))
cursor.execute(query)
def get_database_privileges(cursor, user, db):
priv_map = {
'C': 'CREATE',
'T': 'TEMPORARY',
'c': 'CONNECT',
}
query = 'SELECT datacl FROM pg_database WHERE datname = %s'
cursor.execute(query, (db,))
datacl = cursor.fetchone()[0]
if datacl is None:
return set()
r = re.search(r'%s\\?"?=(C?T?c?)/[^,]+,?' % user, datacl)
if r is None:
return set()
o = set()
for v in r.group(1):
o.add(priv_map[v])
return normalize_privileges(o, 'database')
def has_database_privileges(cursor, user, db, privs):
"""
Return the difference between the privileges that a user already has and
the privileges that they desire to have.
:returns: tuple of:
* privileges that they have and were requested
* privileges they currently hold but were not requested
* privileges requested that they do not hold
"""
cur_privs = get_database_privileges(cursor, user, db)
have_currently = cur_privs.intersection(privs)
other_current = cur_privs.difference(privs)
desired = privs.difference(cur_privs)
return (have_currently, other_current, desired)
def grant_database_privileges(cursor, user, db, privs):
# Note: priv escaped by parse_privs
privs = ', '.join(privs)
if user == "PUBLIC":
query = 'GRANT %s ON DATABASE %s TO PUBLIC' % (
privs, pg_quote_identifier(db, 'database'))
else:
query = 'GRANT %s ON DATABASE %s TO %s' % (
privs, pg_quote_identifier(db, 'database'),
pg_quote_identifier(user, 'role'))
cursor.execute(query)
def revoke_database_privileges(cursor, user, db, privs):
# Note: priv escaped by parse_privs
privs = ', '.join(privs)
if user == "PUBLIC":
query = 'REVOKE %s ON DATABASE %s FROM PUBLIC' % (
privs, pg_quote_identifier(db, 'database'))
else:
query = 'REVOKE %s ON DATABASE %s FROM %s' % (
privs, pg_quote_identifier(db, 'database'),
pg_quote_identifier(user, 'role'))
cursor.execute(query)
def revoke_privileges(cursor, user, privs):
if privs is None:
return False
revoke_funcs = dict(table=revoke_table_privileges,
database=revoke_database_privileges)
check_funcs = dict(table=has_table_privileges,
database=has_database_privileges)
changed = False
for type_ in privs:
for name, privileges in iteritems(privs[type_]):
# Check that any of the privileges requested to be removed are
# currently granted to the user
differences = check_funcs[type_](cursor, user, name, privileges)
if differences[0]:
revoke_funcs[type_](cursor, user, name, privileges)
changed = True
return changed
def grant_privileges(cursor, user, privs):
if privs is None:
return False
grant_funcs = dict(table=grant_table_privileges,
database=grant_database_privileges)
check_funcs = dict(table=has_table_privileges,
database=has_database_privileges)
changed = False
for type_ in privs:
for name, privileges in iteritems(privs[type_]):
# Check that any of the privileges requested for the user are
# currently missing
differences = check_funcs[type_](cursor, user, name, privileges)
if differences[2]:
grant_funcs[type_](cursor, user, name, privileges)
changed = True
return changed
def parse_role_attrs(cursor, role_attr_flags):
"""
Parse role attributes string for user creation.
Format:
attributes[,attributes,...]
Where:
attributes := CREATEDB,CREATEROLE,NOSUPERUSER,...
[ "[NO]SUPERUSER","[NO]CREATEROLE", "[NO]CREATEDB",
"[NO]INHERIT", "[NO]LOGIN", "[NO]REPLICATION",
"[NO]BYPASSRLS" ]
Note: "[NO]BYPASSRLS" role attribute introduced in 9.5
Note: "[NO]CREATEUSER" role attribute is deprecated.
"""
flags = frozenset(role.upper() for role in role_attr_flags.split(',') if role)
valid_flags = frozenset(itertools.chain(FLAGS, get_valid_flags_by_version(cursor)))
valid_flags = frozenset(itertools.chain(valid_flags, ('NO%s' % flag for flag in valid_flags)))
if not flags.issubset(valid_flags):
raise InvalidFlagsError('Invalid role_attr_flags specified: %s' %
' '.join(flags.difference(valid_flags)))
return ' '.join(flags)
def normalize_privileges(privs, type_):
new_privs = set(privs)
if 'ALL' in new_privs:
new_privs.update(VALID_PRIVS[type_])
new_privs.remove('ALL')
if 'TEMP' in new_privs:
new_privs.add('TEMPORARY')
new_privs.remove('TEMP')
return new_privs
def parse_privs(privs, db):
"""
Parse privilege string to determine permissions for database db.
Format:
privileges[/privileges/...]
Where:
privileges := DATABASE_PRIVILEGES[,DATABASE_PRIVILEGES,...] |
TABLE_NAME:TABLE_PRIVILEGES[,TABLE_PRIVILEGES,...]
"""
if privs is None:
return privs
o_privs = {
'database': {},
'table': {}
}
for token in privs.split('/'):
if ':' not in token:
type_ = 'database'
name = db
priv_set = frozenset(x.strip().upper()
for x in token.split(',') if x.strip())
else:
type_ = 'table'
name, privileges = token.split(':', 1)
priv_set = frozenset(x.strip().upper()
for x in privileges.split(',') if x.strip())
if not priv_set.issubset(VALID_PRIVS[type_]):
raise InvalidPrivsError('Invalid privs specified for %s: %s' %
(type_, ' '.join(priv_set.difference(VALID_PRIVS[type_]))))
priv_set = normalize_privileges(priv_set, type_)
o_privs[type_][name] = priv_set
return o_privs
def get_valid_flags_by_version(cursor):
"""
Some role attributes were introduced after certain versions. We want to
compile a list of valid flags against the current Postgres version.
"""
current_version = cursor.connection.server_version
return [
flag
for flag, version_introduced in FLAGS_BY_VERSION.items()
if current_version >= version_introduced
]
# ===========================================
# Module execution.
#
def main():
module = AnsibleModule(
argument_spec=dict(
login_user=dict(default="postgres"),
login_password=dict(default="", no_log=True),
login_host=dict(default=""),
login_unix_socket=dict(default=""),
user=dict(required=True, aliases=['name']),
password=dict(default=None, no_log=True),
state=dict(default="present", choices=["absent", "present"]),
priv=dict(default=None),
db=dict(default=''),
port=dict(default='5432'),
fail_on_user=dict(type='bool', default='yes'),
role_attr_flags=dict(default=''),
encrypted=dict(type='bool', default='yes'),
no_password_changes=dict(type='bool', default='no'),
expires=dict(default=None),
ssl_mode=dict(default='prefer', choices=[
'disable', 'allow', 'prefer', 'require', 'verify-ca', 'verify-full']),
ssl_rootcert=dict(default=None),
conn_limit=dict(default=None)
),
supports_check_mode=True
)
user = module.params["user"]
password = module.params["password"]
state = module.params["state"]
fail_on_user = module.params["fail_on_user"]
db = module.params["db"]
if db == '' and module.params["priv"] is not None:
module.fail_json(msg="privileges require a database to be specified")
privs = parse_privs(module.params["priv"], db)
no_password_changes = module.params["no_password_changes"]
if module.params["encrypted"]:
encrypted = "ENCRYPTED"
else:
encrypted = "UNENCRYPTED"
expires = module.params["expires"]
sslrootcert = module.params["ssl_rootcert"]
conn_limit = module.params["conn_limit"]
if not postgresqldb_found:
module.fail_json(msg="the python psycopg2 module is required")
# To use defaults values, keyword arguments must be absent, so
# check which values are empty and don't include in the **kw
# dictionary
params_map = {
"login_host": "host",
"login_user": "user",
"login_password": "password",
"port": "port",
"db": "database",
"ssl_mode": "sslmode",
"ssl_rootcert": "sslrootcert"
}
kw = dict((params_map[k], v) for (k, v) in iteritems(module.params)
if k in params_map and v != "" and v is not None)
# If a login_unix_socket is specified, incorporate it here.
is_localhost = "host" not in kw or kw["host"] == "" or kw["host"] == "localhost"
if is_localhost and module.params["login_unix_socket"] != "":
kw["host"] = module.params["login_unix_socket"]
if psycopg2.__version__ < '2.4.3' and sslrootcert is not None:
module.fail_json(
msg='psycopg2 must be at least 2.4.3 in order to user the ssl_rootcert parameter')
try:
db_connection = psycopg2.connect(**kw)
cursor = db_connection.cursor(
cursor_factory=psycopg2.extras.DictCursor)
except TypeError as e:
if 'sslrootcert' in e.args[0]:
module.fail_json(
msg='Postgresql server must be at least version 8.4 to support sslrootcert')
module.fail_json(msg="unable to connect to database: %s" % to_native(e), exception=traceback.format_exc())
except Exception as e:
module.fail_json(msg="unable to connect to database: %s" % to_native(e), exception=traceback.format_exc())
try:
role_attr_flags = parse_role_attrs(cursor, module.params["role_attr_flags"])
except InvalidFlagsError as e:
module.fail_json(msg=to_native(e), exception=traceback.format_exc())
kw = dict(user=user)
changed = False
user_removed = False
if state == "present":
if user_exists(cursor, user):
try:
changed = user_alter(db_connection, module, user, password,
role_attr_flags, encrypted, expires, no_password_changes, conn_limit)
except SQLParseError as e:
module.fail_json(msg=to_native(e), exception=traceback.format_exc())
else:
try:
changed = user_add(cursor, user, password,
role_attr_flags, encrypted, expires, conn_limit)
except psycopg2.ProgrammingError as e:
module.fail_json(msg="Unable to add user with given requirement "
"due to : %s" % to_native(e),
exception=traceback.format_exc())
except SQLParseError as e:
module.fail_json(msg=to_native(e), exception=traceback.format_exc())
try:
changed = grant_privileges(cursor, user, privs) or changed
except SQLParseError as e:
module.fail_json(msg=to_native(e), exception=traceback.format_exc())
else:
if user_exists(cursor, user):
if module.check_mode:
changed = True
kw['user_removed'] = True
else:
try:
changed = revoke_privileges(cursor, user, privs)
user_removed = user_delete(cursor, user)
except SQLParseError as e:
module.fail_json(msg=to_native(e), exception=traceback.format_exc())
changed = changed or user_removed
if fail_on_user and not user_removed:
msg = "unable to remove user"
module.fail_json(msg=msg)
kw['user_removed'] = user_removed
if changed:
if module.check_mode:
db_connection.rollback()
else:
db_connection.commit()
kw['changed'] = changed
module.exit_json(**kw)
if __name__ == '__main__':
main()
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