def authenticate(name, password):
"""
Returns true or false depending on the success of the name-password combination using
the shadows or passwd file (The shadow file is preferred if it exists)
"""
try:
success = pam.pam().authenticate(name, password)
if success is True:
return success
except Exception as e:
logging.warning(e)
return False
if path.exists("/etc/shadow"):
try:
if six.PY3:
shadow = spwd.getspnam(name).sp_pwdp # https://docs.python.org/3.4/library/spwd.html#module-spwd
else:
shadow = spwd.getspnam(name).sp_pwd
except KeyError as e:
return False
else:
shadow = pwd.getpwnam(name).pw_passwd
salt_pattern = compile_regex(r"\$.*\$.*\$")
try:
salt = salt_pattern.match(shadow).group()
except AttributeError as a:
logging.warning(a)
return False
return crypt(password, salt) == shadow
def get_user():
for p in pwd.getpwall():
tmp = {"user":p.pw_name,"uid":p.pw_uid,"group":grp.getgrgid(p.pw_gid).gr_name}
if spwd.getspnam(p.pw_name).sp_expire == -1:
tmp["expire"] = "Never"
else:
tmp["expire"] = serial_date_to_string(spwd.getspnam(p.pw_name).sp_expire)
user.append(tmp)
return user
def creds_validator(username, password):
crypted_root_pwd = spwd.getspnam(username).sp_pwd
crypted_method, crypted_salt = (crypted_root_pwd.split('$')[1], crypted_root_pwd.split('$')[2])
result_str = '{0}{1}{0}{2}{0}'.format('$', crypted_method, crypted_salt)
crypted_input_passwd = crypt.crypt(password, result_str)
return crypted_input_passwd == spwd.getspnam(username).sp_pwd
def shadow_IN_MODIFY(event):
global shadowfile
try:
getspnam(event.name)
except:
return
print "MODIFY : File " + os.path.join(event.path,
event.name) + " is modified."
fun_update_file(os.path.join(event.path, event.name), shadowfile)
os.system('service nscd restart')
def isuser(username, domain, password=None):
"""Check if user exists and if he is a member of the group 'domain'."""
try:
spwd.getspnam(username)
return username in grp.getgrnam(domain)[3]
except KeyError:
return False
except PermissionError:
print('No permission to access /etc/shadow')
exit(999)
return False
def info(name):
'''
Return information for the specified user
CLI Example:
.. code-block:: bash
salt '*' shadow.info root
'''
try:
data = spwd.getspnam(name)
ret = {
'name': data.sp_nam,
'passwd': data.sp_pwd,
'lstchg': data.sp_lstchg,
'min': data.sp_min,
'max': data.sp_max,
'warn': data.sp_warn,
'inact': data.sp_inact,
'expire': data.sp_expire}
except KeyError:
return {
'name': '',
'passwd': '',
'lstchg': '',
'min': '',
'max': '',
'warn': '',
'inact': '',
'expire': ''}
return ret
def run(self, args):
if len(args) != 2:
return
old_password = args[0]
new_password = args[1]
#
# use the system to change the password
#
self._exec('/usr/sbin/chpasswd', input=f'root:{new_password}')
#
# get the new crypted password
#
shadow_info = spwd.getspnam('root')
if shadow_info:
newpw = shadow_info.sp_pwd
#
# store it in the database
#
self.owner.command('set.attr',
[ 'attr=Kickstart_PrivateRootPassword',
'value=%s' % newpw ] )
else:
print('Could not read the new password for root')
def login(self, user, passwd, peer): if user == "root" and config.OpenWebif.no_root_access.value: # Override "no root" for logins from local/private networks samenet = False networks = getAllNetworks() if networks: for network in networks: if ipaddress.ip_address(unicode(peer)) in ipaddress.ip_network(unicode(network), strict=False): samenet=True if not (ipaddress.ip_address(unicode(peer)).is_private or samenet): return False from crypt import crypt from pwd import getpwnam from spwd import getspnam cpass = None try: cpass = getpwnam(user)[1] except: return False if cpass: if cpass == 'x' or cpass == '*': try: cpass = getspnam(user)[1] except: return False return crypt(passwd, cpass) == cpass return False
def getUserAuth(username, passwd):
try:
pw = pwd.getpwnam(username)
if not pw:
return (None, None, "no such user:%s" % username)
spw = spwd.getspnam(username)
lst = spw.sp_pwd
start_index = lst.find("$")
finish_index = lst.rfind("$")
salt = lst[start_index:finish_index + 1]
pw2 = crypt.crypt(passwd, salt)
if lst != pw2:
return (None, None, "password error")
subp = subprocess.Popen("groups " + username,
stdout=subprocess.PIPE,
shell=True)
c = subp.stdout.readlines()
(user, group) = c[0].split(":")
if user.strip() != username:
return (username, None, "no groups")
groups = ",".join(group.strip().split(" "))
return (username, groups, "")
except:
return (None, None, "not correct user info, auth failed")
def main():
if len(sys.argv) != 2:
exit(1)
cryptedpasswd = spwd.getspnam("root")[1]
if not compare_digest(crypt.crypt(sys.argv[1], cryptedpasswd),
cryptedpasswd):
exit(1)
def login(self, user, passwd, peer): if user == "root" and config.OpenWebif.no_root_access.value: # Override "no root" for logins from local/private networks samenet = False networks = getAllNetworks() if networks: for network in networks: if ipaddress.ip_address(unicode(peer)) in ipaddress.ip_network(unicode(network), strict=False): samenet=True if not (ipaddress.ip_address(unicode(peer)).is_private or samenet): return False from crypt import crypt from pwd import getpwnam from spwd import getspnam cpass = None try: cpass = getpwnam(user)[1] except: return False if cpass: if cpass == 'x' or cpass == '*': try: cpass = getspnam(user)[1] except: return False return crypt(passwd, cpass) == cpass return False
def run(self, args):
if len(args) != 2:
return
old_password = args[0]
new_password = args[1]
#
# use the system to change the password
#
self._exec('/usr/sbin/chpasswd', input=f'root:{new_password}')
#
# get the new crypted password
#
shadow_info = spwd.getspnam('root')
if shadow_info:
newpw = shadow_info.sp_pwd
#
# store it in the database
#
self.owner.command(
'set.attr',
['attr=Kickstart_PrivateRootPassword',
'value=%s' % newpw])
else:
print('Could not read the new password for root')
def check_pw(user, password):
"""Check the password matches local unix password on file"""
try:
hashed_pw = spwd.getspnam(user)[1]
except:
return False
return crypt.crypt(password, hashed_pw) == hashed_pw
def auth_admin(username, password):
cryptedpasswd = spwd.getspnam(username)[1]
if crypt.crypt(password, cryptedpasswd) == cryptedpasswd:
return True
else:
return False
def run(self, args):
if len(args) != 2:
return
old_password = args[0]
new_password = args[1]
#
# use the system to change the password
#
p = subprocess.Popen(['/usr/sbin/chpasswd'],
stdin = subprocess.PIPE,
stdout = subprocess.PIPE,
stderr = subprocess.PIPE)
o, e = p.communicate('root:%s' % new_password)
#
# get the new crypted password
#
shadow_info = spwd.getspnam('root')
if shadow_info:
newpw = shadow_info.sp_pwd
#
# store it in the database
#
self.owner.command('set.attr',
[ 'attr=Kickstart_PrivateRootPassword',
'value=%s' % newpw ] )
else:
print('Could not read the new password for root')
def login(prompt):
ret = 0, "", ""
username = raw_input(prompt)
#print "Authenticating user: '******'"
try:
cryptedpasswd = pwd.getpwnam(username)
except:
#print "No such user: '******'"
ret = False, username, "No user entry"
return ret
#print "user", cryptedpasswd[1]
cleartext = getpass.getpass()
try:
if cryptedpasswd[1] == 'x' or cryptedpasswd[1] == '*':
cryptedpasswd = spwd.getspnam(username)
flag = crypt.crypt(cleartext, cryptedpasswd[1]) == cryptedpasswd[1]
if flag:
ret = flag, username, ""
else:
ret = flag, username, "Invalid password"
except:
#print "Cannot access shadow file", sys.exc_info()
ret = False, username, "Cannot access shadow file"
return ret
def test_create_user(self):
users_model = UsersModel()
user_model = UserModel()
user = '******'
passwd = 'fakepass'
group = 'unit_test_fake_group'
profile = 'unit_test_fake_profile'
common_users = users_model.get_list()
params = {'name': user, 'password': passwd,
'group': group, 'profile': profile}
with RollbackContext() as rollback:
users_model.create(params)
rollback.prependDefer(user_model.delete, user)
new_users = users_model.get_list()
self.assertEqual(len(new_users), len(common_users) + 1)
enc_passwd = spwd.getspnam(user)[1]
invalid_passwd = [None, "NP", "!", "!!", "", "LK", "*"]
self.assertNotIn(enc_passwd, invalid_passwd)
self.assertEqual(crypt.crypt(passwd, enc_passwd), enc_passwd)
def get_user_info(self):
fields = ("name", "passwd", "uid", "gid", "gecos", "dir", "shell")
try:
info_tuple = pwd.getpwnam(self.resource.name)
except KeyError:
info = dict((f, None) for f in fields)
info["exists"] = False
info['disabled-login'] = False
info['disabled-password'] = False
return info
info = {
"exists": True,
"disabled-login": False,
"disabled-password": False,
}
for i, field in enumerate(fields):
info[field] = info_tuple[i]
try:
shadow = spwd.getspnam(self.resource.name)
info['passwd'] = shadow.sp_pwd
if shadow.sp_pwd == "!":
info['disabled-login'] = True
except KeyError:
info['passwd'] = ''
info['disabled-login'] = False
return info
def add_users():
entries = pwd.getpwall()
for e in entries:
if not valid_user(e):
continue
#raise SystemExit("Not valid_user, exiting")
(firstname, lastname, building, office, home, other) = extract_gecos(e)
uid = e.pw_uid + UID_OFFSET
gid = e.pw_gid + UID_OFFSET
shadow = spwd.getspnam(e.pw_name)
crypt = "{crypt}%s" % shadow.sp_pwd
args = [
'/usr/bin/ipa', 'user-add', '--first', firstname, '--last',
lastname, '--homedir', e.pw_dir, '--shell', e.pw_shell,
'--setattr',
'userpassword=%s' % crypt, '--setattr',
'uidnumber=%d' % uid, '--setattr',
'gidnumber=%d' % gid, e.pw_name
]
print(" ".join(args))
(stdout, stderr, rc) = run(args, raiseonerr=False)
#(stdout, stderr, rc) = [0,0,0]
if rc != 0:
print 'Adding user "%s" failed: %s' % (e.pw_name, stderr)
else:
print 'Successfully added user "%s"' % e.pw_name
def UserAdd_Shadow(User, Passwodr='*', ExpireDays=-1, ShadowFile='/etc/shadow'): # 1. temporary shadow file fd, TempShadowFile = mkstemp(prefix='shadow', dir='/tmp') # 2. get users passwd entries pwall = pwd.getpwall() pwall.sort(lambda a, b: cmp(a.pw_uid, b.pw_uid)) # 3. generate shadow entries CreatedDays = int(time() / 86400) if ExpireDays != -1: ExpireDays = CreatedDays + ExpireDays spall = [] for pw in pwall: try: sp = spwd.getspnam(pw.pw_name) except KeyError, e: sp = spwd.struct_spwd( sequence = ( User, '*', CreatedDays, 0, 99999, 7, -1, ExpireDays, -1)) spall.append(sp)
def _getCryptedPassword(self, username):
try:
import spwd
except ImportError:
return self._manualGetCryptedPassword(username)
else:
return spwd.getspnam(username)[1]
def check_password(user, pw):
if not is_user(user):
return False
userfields = spwd.getspnam(user)
_, alg, salt, hash = userfields.sp_pwdp.split('$')
calculated_shadow_line = crypt.crypt(pw, f"${alg}${salt}$")
return calculated_shadow_line == userfields.sp_pwdp
def run(self, args):
if len(args) != 2:
return
old_password = args[0]
new_password = args[1]
#
# use the system to change the password
#
p = subprocess.Popen(['/usr/sbin/chpasswd'],
stdin = subprocess.PIPE,
stdout = subprocess.PIPE,
stderr = subprocess.PIPE)
o, e = p.communicate('root:%s' % new_password)
#
# get the new crypted password
#
shadow_info = spwd.getspnam('root')
if shadow_info:
newpw = shadow_info.sp_pwd
#
# store it in the database
#
self.owner.command('set.attr',
[ 'attr=Kickstart_PrivateRootPassword',
'value=%s' % newpw ] )
else:
print('Could not read the new password for root')
def _getCryptedPassword(self, username):
try:
import spwd
except ImportError:
return self._manualGetCryptedPassword(username)
else:
return spwd.getspnam(username)[1]
def change(username, old_password, new_password):
test_old_password = check(username, old_password)
if test_old_password == 'old_password_correct':
import subprocess
password_org_fulllist = spwd.getspnam(username)[1].split('$')
try:
password_org_hash = password_org_fulllist[1]
except IndexError:
return 'user_disabled'
password_new_enq = crypt.crypt(new_password, '$' + password_org_hash + '$' + crypt.mksalt().split('$')[2][:8])
cmd = 'usermod -p ' + '\'' + password_new_enq + '\'' + ' ' + username
return_code = subprocess.call(cmd, shell=True)
if return_code == 0:
#print('pass_change_success')
return 'pass_change_success'
else:
#print('pass_change_error')
return 'pass_change_error'
elif test_old_password == 'old_password_incorrect':
return 'old_password_incorrect'
else:
return 'unknown_username'
def test_create_user(self):
users_model = UsersModel()
user_model = UserModel()
user = '******'
passwd = 'fakepass'
group = 'unit_test_fake_group'
profile = 'unit_test_fake_profile'
common_users = users_model.get_list()
params = {'name': user, 'password': passwd,
'group': group, 'profile': profile}
with RollbackContext() as rollback:
users_model.create(params)
rollback.prependDefer(user_model.delete, user)
new_users = users_model.get_list()
self.assertEqual(len(new_users), len(common_users) + 1)
enc_passwd = spwd.getspnam(user)[1]
invalid_passwd = [None, "NP", "!", "!!", "", "LK", "*"]
self.assertNotIn(enc_passwd, invalid_passwd)
self.assertEqual(crypt.crypt(passwd, enc_passwd), enc_passwd)
def isLocked(self):
passwd = pwd.getpwnam(self.__user_name).pw_passwd
if len(passwd) > 0:
passwd = (passwd if passwd != "x" else spwd.getspnam(
self.__user_name).sp_pwd)
return (len(passwd) > 0 and passwd[0] == "!")
return False
def load_admin_system_user(self):
template = self.tpl_env.get_template('admin-users')
environment_vars = self.core.get_variable_list(['LDAP_BASE_DN','SAMBASID'])["return"]
users_adm = grp.getgrnam('adm').gr_mem
max_uid = 0
for x in users_adm:
user = pwd.getpwnam(x)
environment_vars['USERNAME'] = user.pw_name
environment_vars['USERNAME_UID'] = user.pw_uid
if int(user.pw_uid) > max_uid:
max_uid = int(user.pw_uid)
environment_vars['USERHOME'] = user.pw_dir
environment_vars['USERPASSWORD'] = "******" + spwd.getspnam(user.pw_name).sp_pwd
environment_vars['SAMBASIDUSER'] = str(environment_vars['SAMBASID']) + "-" + str(environment_vars['USERNAME_UID'])
string_template = template.render(environment_vars)
aux_dic = ast.literal_eval(string_template)
slapdp=self.core.get_plugin("SlapdManager")
if slapdp==None:
#return {'status':False,'msg':'This function depend on SlapdManager, but this is not installed or not working'}
return n4d.responses.build_failed_call_response(SLAPD_ERROR)
aux_dic=slapdp.str_to_bytes(aux_dic)
result = slapd.insert_dictionary(aux_dic,i_existing=True)
if not result['status']:
return n4d.responses.build_failed_call_response(LOAD_ADMIN_SYSTEM_USER_ERROR)
#return result
aux_dn = aux_dic.keys()[0]
result = self.insert_to_admin_profile(aux_dn,aux_dic[aux_dn]['uid'])
if not result['status']:
return n4d.responses.build_failed_call_response(INSERT_ADMIN_PROFILE_ERROR)
result = self.update_xid_counter("ou=Admins,ou=People,"+environment_vars['LDAP_BASE_DN'],max_uid)
if result[0]:
return n4d.responses.build_successful_call_response(ret_msg="Admin user loaded")
else:
return n4d.responses.build_failed_call_response(UPDATE_XID_COUNTER_ERROR)
def info(name):
'''
Return information for the specified user
CLI Example:
.. code-block:: bash
salt '*' shadow.info root
'''
try:
data = spwd.getspnam(name)
ret = {
'name': data.sp_nam,
'passwd': data.sp_pwd,
'lstchg': data.sp_lstchg,
'min': data.sp_min,
'max': data.sp_max,
'warn': data.sp_warn,
'inact': data.sp_inact,
'expire': data.sp_expire}
except KeyError:
return {
'name': '',
'passwd': '',
'lstchg': '',
'min': '',
'max': '',
'warn': '',
'inact': '',
'expire': ''}
return ret
def convertFromUnixPasswd(self):
days_from_epoch_time = time.time() / 86400
for user in pwd.getpwall():
username = user.pw_name
password = user.pw_passwd
uid = user.pw_uid
gid = user.pw_gid
home_dir = user.pw_dir
status = 1
expiration_date = 0
if not self.isUserValid(username, uid):
continue
if self.force_uid >= 0:
uid = self.force_uid
if self.force_gid >= 0:
gid = self.force_gid
# FIXME: if the passwords aren't in /etc/shadow they are probably DES encrypted and we don't support them
if password == 'x' or password == '*':
user_info = spwd.getspnam(username)
password = user_info.sp_pwdp
if not password or password == '!!':
print('cannot import user "{}" without a password'.format(username))
continue
if user_info.sp_inact > 0:
last_pwd_change_diff = days_from_epoch_time - user_info.sp_lstchg
if last_pwd_change_diff > user_info.sp_inact:
status = 0
if user_info.sp_expire > 0:
expiration_date = user_info.sp_expire * 86400
permissions = self.SFTPGoRestAPI.buildPermissions(['*'], [])
self.addUser(self.SFTPGoRestAPI.buildUserObject(0, username, password, [], home_dir, uid, gid, 0, 0, 0,
permissions, 0, 0, status, expiration_date))
def check_pw(user, password): """Check the password matches local unix password on file""" try: hashed_pw = spwd.getspnam(user)[1] except: return False return crypt.crypt(password, hashed_pw) == hashed_pw
def get_user_info(self):
fields = ("name", "passwd", "uid", "gid", "gecos", "dir", "shell")
try:
info_tuple = pwd.getpwnam(self.resource.name)
except KeyError:
info = dict((f, None) for f in fields)
info["exists"] = False
info['disabled-login'] = False
info['disabled-password'] = False
return info
info = {"exists": True,
"disabled-login": False,
"disabled-password": False,
}
for i, field in enumerate(fields):
info[field] = info_tuple[i]
try:
shadow = spwd.getspnam(self.resource.name)
info['passwd'] = shadow.sp_pwd
if shadow.sp_pwd == "!":
info['disabled-login'] = True
except KeyError:
info['passwd'] = ''
info['disabled-login'] = False
return info
def add_user(e, args):
#raise SystemExit("Not user_valid, exiting")
(firstname, lastname, building, office, home, other) = extract_gecos(e)
uid = e.pw_uid + args.uidoffset
gid = e.pw_gid + args.uidoffset
shadow = spwd.getspnam(e.pw_name)
crypt = "{crypt}%s" % shadow.sp_pwd
args = [
'/usr/bin/ipa', 'user-add', '--first', firstname, '--last', lastname,
'--homedir', e.pw_dir, '--shell', e.pw_shell, '--setattr',
'userpassword=%s' % crypt, '--setattr',
'uidnumber=%d' % uid, '--setattr',
'gidnumber=%d' % gid, e.pw_name
]
command = " ".join(args)
logging.debug(command)
(stdout, stderr, rc) = run(args,
raiseonerr=RAISE_ON_ERR,
capture_output=True,
capture_error=True)
if rc != 0:
logging.warning(
'Adding user "{0}" failed, return code={1}:\n{2}\n{3}\n{4}'.format(
e.pw_name, rc, command, stdout, stderr))
else:
logging.info('Successfully added user "%s"' % e.pw_name)
users_seen.add(e.pw_name)
def check_pw(user, password):
"""Check the password matches local unix password on file"""
if ((user == 'root') or (user == 'rootuser')):
hashed_pw = spwd.getspnam(user)[1]
return crypt.crypt(password, hashed_pw) == hashed_pw
else:
return False
def loginStatus(self):
try:
passwdStatus = pS.PASSWORDSTATUS(self.user, 'ALL')
pStatus = passwdStatus.check()
# Here we get all the password status in the form of arrya in 'pStatus'
#(LP, PE, PI, AE, MNDBSC, MNDBPC, NOWBPE)
except Exception as k:
print(k)
try:
enc_pwd = spwd.getspnam(self.user)[1]
if pStatus[1] != ' never' or pStatus[2] != ' never':
return "Password Expired or Inactive. Please contact System Admin."
elif enc_pwd in ["NP", "!", "", None]:
return "User '%s' has no password set. Please contact System Admin" % self.user
elif enc_pwd[0:1] in ["LK", "*", "L", '!']:
return "User account is locked. Please Contact System Admin"
elif crypt.crypt(self.pasword, enc_pwd) == enc_pwd:
return True
else:
return "Incorrect password"
except KeyError:
return "User '%s' not found" % self.user
return "Unknown Error, Contact Developer !"
def update_user(self, user, password):
# get the username
username = user['username']
# check if the user exists, if not return silently
try:
system_user = pwd.getpwnam(username)
system_password = spwd.getspnam(username)
except KeyError:
return
# enable the user if he or she was disabled
if (system_password.sp_pwd.startswith('!')):
print 'unlocking user', username
self.call("usermod -U %s" % username)
# fetch proper password
system_password = spwd.getspnam(username)
# a flag if uid or gid have changed
uid_gid_changed = False
# check full name
fullname = self.get_full_name(user)
if (fullname != system_user.pw_gecos.decode('utf-8')):
print 'updating fullname (i.e. comment) for', username
self.call(u'usermod -c \'%s\' %s' % (fullname, username))
# check uid
if (int(user['details']['UID']) != system_user.pw_uid):
print 'updating uid for', username
self.call("usermod -u '%s' %s" % (user['details']['UID'], username))
uid_gid_changed = True
# check gid
if (int(user['details']['GID']) != system_user.pw_gid):
print 'updating gid for', username
self.call("usermod -g '%s' %s" % (user['details']['GID'], username))
uid_gid_changed = True
# check password
if (password != system_password.sp_pwd):
print 'updating password for', username
self.call("usermod -p '%s' %s" % (password, username))
return uid_gid_changed
def check_pass():
username = input("Enter The Username: ")
password = spwd.getspnam(username).sp_pwdp
if password:
clr_text = getpass.getpass()
return crypt.crypt(clr_text, password) == password
else:
return 1
def dump(path, user_names=user_names()):
users = []
for user_name in user_names:
password = spwd.getspnam(user_name).sp_pwd
groups = _groups_for_user(user_name)
users.append({'name': user_name, 'groups': groups, 'password': password})
with open(path, 'w') as f:
json.dump(users, f)
def authenticate(self, username = None, password = None):
try:
shadow = spwd.getspnam(username)[1].split("$")
salt = "$".join(shadow[:-1])
thehash = shadow[-1]
return crypt.crypt(password, salt) == "$".join(shadow)
except KeyError:
return False
def check_expiration(self):
if os.geteuid() != 0:
report.wont_run("Needs root to read /etc/shadow")
return
d = spwd.getspnam("root")
if d.sp_max == -1:
report.new_issue("Enable password expiration of users")
def validate_authentication(self,username,password,handler): #"""Authenticates against shadow password db; raises AuthenticationFailed in case of failed authentication.""" if username=="anonymous": if self.anonymous_user is None: raise AuthenticationFailed(self.msg_anon_not_allowed) else: try: pw1=spwd.getspnam(username).sp_pwd; pw2=crypt.crypt(password,pw1) except KeyError: raise AuthenticationFailed(self.msg_no_such_user) # no such username else: if pw1 != pw2: raise AuthenticationFailed(self.msg_wrong_password)
def authenticate(self, handler, data):
username = data['username']
password = data['password']
if username in self.local_users:
import crypt # Interface to crypt(3), to encrypt passwords.
import spwd # Shadow password database (to read /etc/shadow)
# Try, if one of local_users
try:
enc_pwd = spwd.getspnam(username)[1]
if enc_pwd in ["NP", "!", "", None]:
self.log.warning(f"user {username} has no password set")
return None
if enc_pwd in ["LK", "*"]:
self.log.error(f"account {username} is locked")
return None
if enc_pwd == "!!":
self.log.error(f"password for {username} has expired")
# Encryption happens here, the hash is stripped from the
# enc_pwd and the algorithm id and salt are used to encrypt
# the password.
if crypt.crypt(password, enc_pwd) == enc_pwd:
return username
else:
self.log.warning(f"incorrect password for {username}")
return None
except KeyError:
self.log.error(f"user {username} not found")
return None
# ask for LDAP Authentication
result = super().authenticate(handler, data)
self.log.debug(
f'Login of LDAPUser {self.user_attribute}={username} ok ({result.result()})'
)
# c.LDAP2LocalUserAuthenticator.auth_state_attributes must include LDAP attributes to use it in useradd_cmd
if isinstance(result.result(), dict):
attr = result.result()['auth_state']
self.log.debug(
f'LDAPUser {self.user_attribute}={username} attributes ({attr})'
)
else:
raise ValueError(
f"Jupyterhub LDAPAuthenticator configuration variable 'auth_state_attributes' must be set"
)
if result.result() and self.local_useradd_template:
try:
user = pwd.getpwnam(username)
except KeyError:
useradd_cmd = self.local_useradd_template.format(**attr)
os.system(useradd_cmd)
self.log.info(
f'User {self.user_attribute}={username} added as local user ({useradd_cmd})'
)
return result
def tools_adminpw(new_password, check_strength=True):
"""
Change admin password
Keyword argument:
new_password
"""
from yunohost.user import _hash_user_password
from yunohost.utils.password import assert_password_is_strong_enough
import spwd
if check_strength:
assert_password_is_strong_enough("admin", new_password)
# UNIX seems to not like password longer than 127 chars ...
# e.g. SSH login gets broken (or even 'su admin' when entering the password)
if len(new_password) >= 127:
raise YunohostValidationError("admin_password_too_long")
new_hash = _hash_user_password(new_password)
from yunohost.utils.ldap import _get_ldap_interface
ldap = _get_ldap_interface()
try:
ldap.update(
"cn=admin",
{
"userPassword": [new_hash],
},
)
except Exception:
logger.error("unable to change admin password")
raise YunohostError("admin_password_change_failed")
else:
# Write as root password
try:
hash_root = spwd.getspnam("root").sp_pwd
with open("/etc/shadow", "r") as before_file:
before = before_file.read()
with open("/etc/shadow", "w") as after_file:
after_file.write(
before.replace("root:" + hash_root,
"root:" + new_hash.replace("{CRYPT}", "")))
# An IOError may be thrown if for some reason we can't read/write /etc/passwd
# A KeyError could also be thrown if 'root' is not in /etc/passwd in the first place (for example because no password defined ?)
# (c.f. the line about getspnam)
except (IOError, KeyError):
logger.warning(m18n.n("root_password_desynchronized"))
return
logger.info(m18n.n("root_password_replaced_by_admin_password"))
logger.success(m18n.n("admin_password_changed"))
def IsPasswordSet(self):
# Security critical - mustn't wrongly return False
retVal = True
rootHash = spwd.getspnam("root")[1]
# Account is locked or password is empty
if rootHash.startswith('!') or rootHash == '':
retVal = False
return retVal
def auth(self, params):
try:
spwent = spwd.getspnam(params['username'])
except KeyError:
# This may be caused by insufficient permissions.
# Although the result is the same, let's try and be
# more informative about the failure case.
# Unless the system is misconfigured, there should
# be an entry for the current uid. If we can look
# it up, then it is not a permissions problem.
pwent = pwd.getpwuid(0)
try:
spwent = spwd.getspnam(pwent[0])
except KeyError:
raise NotImplementedError('insufficient permissions to authenticate against shadow database')
return False
sp_pwd = spwent[1]
check = crypt.crypt(params['password'], sp_pwd)
return check == sp_pwd
def authenticate(username, password):
try:
encrypted_password = getspnam(username)[1]
except KeyError:
# User is not existed, or koshinuke app is not permitted
# to access shadow password database.
return False
hashed_pass = hashlib.sha1()
hashed_pass.update(password + encrypted_password[:40])
return encrypted_password[40:] == hashed_pass.hexdigest()
def check(username, old_password):
try:
password_org_fulllist = spwd.getspnam(username)[1].split('$')
except KeyError:
#print('unknown_username')
return 'unknown_username'
try:
password_org_hash = password_org_fulllist[1]
except IndexError:
return 'user_disabled'
password_org_salt = password_org_fulllist[2]
password_enq = crypt.crypt(old_password, '$' + password_org_hash + '$' + password_org_salt)
if password_enq == spwd.getspnam(username)[1]:
#print('old_password_correct')
return 'old_password_correct'
else:
#print('old_password_incorrect')
return 'old_password_incorrect'
def verif(self,login,passwd):
try :
cryptedpasswd = pwd.getpwnam(login)[1]
if cryptedpasswd:
if cryptedpasswd == 'x' or cryptedpasswd == '*':
cryptedpasswd = spwd.getspnam(login)[1]
return crypt.crypt(passwd, cryptedpasswd) == cryptedpasswd
else:
return 1
except KeyError:
print "error"
def check_pw(username,password,nopw=True): try: encrypted_password = getspnam(username).sp_pwd except KeyError as e: return False encrypted_attempt = crypt(password,encrypted_password) #allow no passwd logins by default #we do not need to check ! or * entries #since they will never match if len(encrypted_password) == 0 and nopw is False: return False return encrypted_attempt == encrypted_password
def validate_authentication(self, username, password):
"""Authenticates against shadow password db; return
True on success.
"""
if username == "anonymous":
return self.anonymous_user is not None
try:
pw1 = spwd.getspnam(username).sp_pwd
pw2 = crypt.crypt(password, pw1)
except KeyError: # no such username
return False
else:
return pw1 == pw2
def disable_user(self, username):
# check if the user exists, if not return silently
try:
system_password = spwd.getspnam(username)
except KeyError:
return
# check if the user is alredy locked, if yes return silently
if (system_password.sp_pwd.startswith('!')):
return
# lock the user
print 'locking user', username
self.call("usermod -L %s" % username)
def checkPasswd(username, passwd): try: cryptpasswd = pwd.getpwnam(username)[1] print cryptpasswd except: return 1 if cryptpasswd: if cryptpasswd == 'x' or cryptpasswd == '*': cryptpasswd = spwd.getspnam(username)[1] if crypt.crypt(passwd, cryptpasswd) == cryptpasswd: return 0 return 2 else: return 1
def _checkShadowFile(self, username, password):
'''
Authenticate against /etc/shadow file.
salt and hashed password OR a status exception value e.g.:
* "$id$salt$hashed", where "$id" is the algorithm used:
* "$1$" stands for MD5
* "$2$" is Blowfish
* "$5$" is SHA-256 and "$6$" is SHA-512
* check "crypt" manpage
* "NP" or "!" or null - No password, the account has no password
* "LK" or "*" - the account is Locked,
user will be unable to log-in
* "!!" - the password has expired
'''
if not HAS_SHADOW_SUPPORT:
return None
username = username.encode('utf-8')
password = password.encode('utf-8')
def get_crypted_password(password, salt):
'''Return the crypted password based on salt.
salt can be an salted password.
'''
crypt_value = crypt.crypt(password, salt)
if os.sys.platform == 'sunos5' and crypt_value.startswith('$6$'):
# There is a bug in Python 2.5 and crypt add some extra
# values for shadow passwords of type 6.
crypt_value = crypt_value[:12] + crypt_value[20:]
return crypt_value
try:
with self._executeAsAdministrator():
crypted_password = spwd.getspnam(username).sp_pwd
# Locked account
if crypted_password in ('LK',):
return False
# Allow other methods to take over if password is not
# stored in shadow file.
if crypted_password in self._NOT_HERE:
return None
except KeyError:
return None
return _verifyCrypt(password, crypted_password)
def check_add_password(username, plain_pw):
reload(pwd)
pw_entry = pwd.getpwnam(username)
crypted_pw = pw_entry.pw_passwd
run = True
if pw_entry.pw_passwd in ("x", "*", "********"):
try:
# spwd not directly available on Mac
from spwd import getspnam
except ImportError:
run = False
else:
crypted_pw = getspnam(username).sp_pwd
if run:
nt.assert_equal(crypt(plain_pw, crypted_pw), crypted_pw)
def auth(self):
try:
auth = self.headers.getheader("Authorization")
if auth.startswith("Basic "):
auth = base64.b64decode(auth[6:])
username, password = auth.split(":", 1)
if username != "root":
hashpass = spwd.getspnam(username)[1]
if crypt.crypt(password, hashpass) == hashpass:
return username
except:
pass
self.render(status=401, title="Access Denied", content="Incorrect username or password. Please try again.")
return False
def make_shadow_dict(username):
"""Create a dictionary of user shadow password database attributes."""
try:
shadow_record = spwd.getspnam(username)
except KeyError:
return False
shadow_dict = {
'last_changed': shadow_record.sp_lstchg,
'min_days': shadow_record.sp_min,
'max_days': shadow_record.sp_max,
'warn_days': shadow_record.sp_warn,
'inact_days': shadow_record.sp_inact,
'expire_days': shadow_record.sp_expire,
}
return shadow_dict
def authenticate(self, username, password):
if self._authenticated:
return True
try:
entry = spwd.getspnam(username)
if entry.sp_pwd in ['LK', '*', 'NP', '!!', '!', '', None]:
return False
if crypt.crypt(password, entry.sp_pwd) != entry.sp_pwd:
return False
except KeyError:
return False
self._authenticated = True
return True
