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1 | #!/usr/bin/env python |
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1 | #!/usr/bin/env python | |
2 | # encoding: utf-8 |
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2 | # encoding: utf-8 | |
3 | # ldap authentication lib |
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3 | # ldap authentication lib | |
4 | # Copyright (C) 2009-2011 Marcin Kuzminski <marcin@python-works.com> |
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4 | # Copyright (C) 2009-2011 Marcin Kuzminski <marcin@python-works.com> | |
5 | # |
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5 | # | |
6 | # This program is free software: you can redistribute it and/or modify |
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6 | # This program is free software: you can redistribute it and/or modify | |
7 | # it under the terms of the GNU General Public License as published by |
|
7 | # it under the terms of the GNU General Public License as published by | |
8 | # the Free Software Foundation, either version 3 of the License, or |
|
8 | # the Free Software Foundation, either version 3 of the License, or | |
9 | # (at your option) any later version. |
|
9 | # (at your option) any later version. | |
10 | # |
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10 | # | |
11 | # This program is distributed in the hope that it will be useful, |
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11 | # This program is distributed in the hope that it will be useful, | |
12 | # but WITHOUT ANY WARRANTY; without even the implied warranty of |
|
12 | # but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
|
13 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | # GNU General Public License for more details. |
|
14 | # GNU General Public License for more details. | |
15 | # |
|
15 | # | |
16 | # You should have received a copy of the GNU General Public License |
|
16 | # You should have received a copy of the GNU General Public License | |
17 | # along with this program. If not, see <http://www.gnu.org/licenses/>. |
|
17 | # along with this program. If not, see <http://www.gnu.org/licenses/>. | |
18 | """ |
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18 | """ | |
19 | Created on Nov 17, 2010 |
|
19 | Created on Nov 17, 2010 | |
20 |
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20 | |||
21 | @author: marcink |
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21 | @author: marcink | |
22 | """ |
|
22 | """ | |
23 |
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23 | |||
24 | from rhodecode.lib.exceptions import * |
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24 | from rhodecode.lib.exceptions import * | |
25 | import logging |
|
25 | import logging | |
26 |
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26 | |||
27 | log = logging.getLogger(__name__) |
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27 | log = logging.getLogger(__name__) | |
28 |
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28 | |||
29 | try: |
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29 | try: | |
30 | import ldap |
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30 | import ldap | |
31 | except ImportError: |
|
31 | except ImportError: | |
32 | pass |
|
32 | pass | |
33 |
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33 | |||
34 | class AuthLdap(object): |
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34 | class AuthLdap(object): | |
35 |
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35 | |||
36 | def __init__(self, server, base_dn, port=389, bind_dn='', bind_pass='', |
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36 | def __init__(self, server, base_dn, port=389, bind_dn='', bind_pass='', | |
37 | use_ldaps=False, tls_reqcert='DEMAND', ldap_version=3, |
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37 | use_ldaps=False, tls_reqcert='DEMAND', ldap_version=3, | |
38 | ldap_filter='(&(objectClass=user)(!(objectClass=computer)))', |
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38 | ldap_filter='(&(objectClass=user)(!(objectClass=computer)))', | |
39 | search_scope='SUBTREE', |
|
39 | search_scope='SUBTREE', | |
40 | attr_login='uid'): |
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40 | attr_login='uid'): | |
41 | self.ldap_version = ldap_version |
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41 | self.ldap_version = ldap_version | |
42 | if use_ldaps: |
|
42 | if use_ldaps: | |
43 | port = port or 689 |
|
43 | port = port or 689 | |
44 | self.LDAP_USE_LDAPS = use_ldaps |
|
44 | self.LDAP_USE_LDAPS = use_ldaps | |
45 | self.TLS_REQCERT = ldap.__dict__['OPT_X_TLS_' + tls_reqcert] |
|
45 | self.TLS_REQCERT = ldap.__dict__['OPT_X_TLS_' + tls_reqcert] | |
46 | self.LDAP_SERVER_ADDRESS = server |
|
46 | self.LDAP_SERVER_ADDRESS = server | |
47 | self.LDAP_SERVER_PORT = port |
|
47 | self.LDAP_SERVER_PORT = port | |
48 |
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48 | |||
49 | #USE FOR READ ONLY BIND TO LDAP SERVER |
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49 | #USE FOR READ ONLY BIND TO LDAP SERVER | |
50 | self.LDAP_BIND_DN = bind_dn |
|
50 | self.LDAP_BIND_DN = bind_dn | |
51 | self.LDAP_BIND_PASS = bind_pass |
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51 | self.LDAP_BIND_PASS = bind_pass | |
52 |
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52 | |||
53 | ldap_server_type = 'ldap' |
|
53 | ldap_server_type = 'ldap' | |
54 | if self.LDAP_USE_LDAPS:ldap_server_type = ldap_server_type + 's' |
|
54 | if self.LDAP_USE_LDAPS:ldap_server_type = ldap_server_type + 's' | |
55 | self.LDAP_SERVER = "%s://%s:%s" % (ldap_server_type, |
|
55 | self.LDAP_SERVER = "%s://%s:%s" % (ldap_server_type, | |
56 | self.LDAP_SERVER_ADDRESS, |
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56 | self.LDAP_SERVER_ADDRESS, | |
57 | self.LDAP_SERVER_PORT) |
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57 | self.LDAP_SERVER_PORT) | |
58 |
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58 | |||
59 | self.BASE_DN = base_dn |
|
59 | self.BASE_DN = base_dn | |
60 | self.LDAP_FILTER = ldap_filter |
|
60 | self.LDAP_FILTER = ldap_filter | |
61 | self.SEARCH_SCOPE = ldap.__dict__['SCOPE_' + search_scope] |
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61 | self.SEARCH_SCOPE = ldap.__dict__['SCOPE_' + search_scope] | |
62 | self.attr_login = attr_login |
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62 | self.attr_login = attr_login | |
63 |
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63 | |||
64 |
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64 | |||
65 | def authenticate_ldap(self, username, password): |
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65 | def authenticate_ldap(self, username, password): | |
66 | """Authenticate a user via LDAP and return his/her LDAP properties. |
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66 | """Authenticate a user via LDAP and return his/her LDAP properties. | |
67 |
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67 | |||
68 | Raises AuthenticationError if the credentials are rejected, or |
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68 | Raises AuthenticationError if the credentials are rejected, or | |
69 | EnvironmentError if the LDAP server can't be reached. |
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69 | EnvironmentError if the LDAP server can't be reached. | |
70 |
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70 | |||
71 | :param username: username |
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71 | :param username: username | |
72 | :param password: password |
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72 | :param password: password | |
73 | """ |
|
73 | """ | |
74 |
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74 | |||
75 | from rhodecode.lib.helpers import chop_at |
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75 | from rhodecode.lib.helpers import chop_at | |
76 |
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76 | |||
77 | uid = chop_at(username, "@%s" % self.LDAP_SERVER_ADDRESS) |
|
77 | uid = chop_at(username, "@%s" % self.LDAP_SERVER_ADDRESS) | |
78 |
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78 | |||
79 | if "," in username: |
|
79 | if "," in username: | |
80 | raise LdapUsernameError("invalid character in username: ,") |
|
80 | raise LdapUsernameError("invalid character in username: ,") | |
81 | try: |
|
81 | try: | |
82 | ldap.set_option(ldap.OPT_X_TLS_CACERTDIR, '/etc/openldap/cacerts') |
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82 | ldap.set_option(ldap.OPT_X_TLS_CACERTDIR, '/etc/openldap/cacerts') | |
83 | ldap.set_option(ldap.OPT_REFERRALS, ldap.OPT_OFF) |
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83 | ldap.set_option(ldap.OPT_REFERRALS, ldap.OPT_OFF) | |
84 | ldap.set_option(ldap.OPT_RESTART, ldap.OPT_ON) |
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84 | ldap.set_option(ldap.OPT_RESTART, ldap.OPT_ON) | |
85 | ldap.set_option(ldap.OPT_TIMEOUT, 20) |
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85 | ldap.set_option(ldap.OPT_TIMEOUT, 20) | |
86 | ldap.set_option(ldap.OPT_NETWORK_TIMEOUT, 10) |
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86 | ldap.set_option(ldap.OPT_NETWORK_TIMEOUT, 10) | |
87 | ldap.set_option(ldap.OPT_TIMELIMIT, 15) |
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87 | ldap.set_option(ldap.OPT_TIMELIMIT, 15) | |
88 | if self.LDAP_USE_LDAPS: |
|
88 | if self.LDAP_USE_LDAPS: | |
89 | ldap.set_option(ldap.OPT_X_TLS_REQUIRE_CERT, self.TLS_REQCERT) |
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89 | ldap.set_option(ldap.OPT_X_TLS_REQUIRE_CERT, self.TLS_REQCERT) | |
90 | server = ldap.initialize(self.LDAP_SERVER) |
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90 | server = ldap.initialize(self.LDAP_SERVER) | |
91 | if self.ldap_version == 2: |
|
91 | if self.ldap_version == 2: | |
92 | server.protocol = ldap.VERSION2 |
|
92 | server.protocol = ldap.VERSION2 | |
93 | else: |
|
93 | else: | |
94 | server.protocol = ldap.VERSION3 |
|
94 | server.protocol = ldap.VERSION3 | |
95 |
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95 | |||
96 | if self.LDAP_BIND_DN and self.LDAP_BIND_PASS: |
|
96 | if self.LDAP_BIND_DN and self.LDAP_BIND_PASS: | |
97 | server.simple_bind_s(self.LDAP_BIND_DN, self.LDAP_BIND_PASS) |
|
97 | server.simple_bind_s(self.LDAP_BIND_DN, self.LDAP_BIND_PASS) | |
98 |
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98 | |||
99 | filt = '(&%s(%s=%s))' % (self.LDAP_FILTER, self.attr_login, username) |
|
99 | filt = '(&%s(%s=%s))' % (self.LDAP_FILTER, self.attr_login, username) | |
100 | log.debug("Authenticating %r filt %s at %s", self.BASE_DN, |
|
100 | log.debug("Authenticating %r filt %s at %s", self.BASE_DN, | |
101 | filt, self.LDAP_SERVER) |
|
101 | filt, self.LDAP_SERVER) | |
102 | lobjects = server.search_ext_s(self.BASE_DN, self.SEARCH_SCOPE, |
|
102 | lobjects = server.search_ext_s(self.BASE_DN, self.SEARCH_SCOPE, | |
103 | filt) |
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103 | filt) | |
104 |
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104 | |||
105 | if not lobjects: |
|
105 | if not lobjects: | |
106 | raise ldap.NO_SUCH_OBJECT() |
|
106 | raise ldap.NO_SUCH_OBJECT() | |
107 |
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107 | |||
108 | for (dn, attrs) in lobjects: |
|
108 | for (dn, _attrs) in lobjects: | |
109 | try: |
|
109 | try: | |
110 | server.simple_bind_s(dn, password) |
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110 | server.simple_bind_s(dn, password) | |
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111 | attrs = server.search_ext_s(dn, ldap.SCOPE_BASE, '(objectClass=*)')[0][1] | |||
111 | break |
|
112 | break | |
112 |
|
113 | |||
113 | except ldap.INVALID_CREDENTIALS, e: |
|
114 | except ldap.INVALID_CREDENTIALS, e: | |
114 | log.debug("LDAP rejected password for user '%s' (%s): %s", |
|
115 | log.debug("LDAP rejected password for user '%s' (%s): %s", | |
115 | uid, username, dn) |
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116 | uid, username, dn) | |
116 |
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117 | |||
117 | else: |
|
118 | else: | |
118 | log.debug("No matching LDAP objects for authentication " |
|
119 | log.debug("No matching LDAP objects for authentication " | |
119 | "of '%s' (%s)", uid, username) |
|
120 | "of '%s' (%s)", uid, username) | |
120 | raise LdapPasswordError() |
|
121 | raise LdapPasswordError() | |
121 |
|
122 | |||
122 | except ldap.NO_SUCH_OBJECT, e: |
|
123 | except ldap.NO_SUCH_OBJECT, e: | |
123 | log.debug("LDAP says no such user '%s' (%s)", uid, username) |
|
124 | log.debug("LDAP says no such user '%s' (%s)", uid, username) | |
124 | raise LdapUsernameError() |
|
125 | raise LdapUsernameError() | |
125 | except ldap.SERVER_DOWN, e: |
|
126 | except ldap.SERVER_DOWN, e: | |
126 | raise LdapConnectionError("LDAP can't access authentication server") |
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127 | raise LdapConnectionError("LDAP can't access authentication server") | |
127 |
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128 | |||
128 | return (dn, attrs) |
|
129 | return (dn, attrs) |
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