src/server/daemon/ldap_auth.c

Sun, 17 Mar 2013 19:19:57 +0100

author
Olaf Wintermann <olaf.wintermann@gmail.com>
date
Sun, 17 Mar 2013 19:19:57 +0100
changeset 57
b3a89736b23e
parent 49
1fd94945796e
child 63
66442f81f823
permissions
-rw-r--r--

some fixes

38
d07810b02147 added ldap authentication
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
1 /*
d07810b02147 added ldap authentication
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
2 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
d07810b02147 added ldap authentication
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
3 *
44
3da1f7b6847f added some error messages
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 38
diff changeset
4 * Copyright 2013 Olaf Wintermann. All rights reserved.
38
d07810b02147 added ldap authentication
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
5 *
d07810b02147 added ldap authentication
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
6 * Redistribution and use in source and binary forms, with or without
d07810b02147 added ldap authentication
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
7 * modification, are permitted provided that the following conditions are met:
d07810b02147 added ldap authentication
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
8 *
d07810b02147 added ldap authentication
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
9 * 1. Redistributions of source code must retain the above copyright
d07810b02147 added ldap authentication
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
10 * notice, this list of conditions and the following disclaimer.
d07810b02147 added ldap authentication
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
11 *
d07810b02147 added ldap authentication
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
12 * 2. Redistributions in binary form must reproduce the above copyright
d07810b02147 added ldap authentication
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
13 * notice, this list of conditions and the following disclaimer in the
d07810b02147 added ldap authentication
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
14 * documentation and/or other materials provided with the distribution.
d07810b02147 added ldap authentication
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
15 *
d07810b02147 added ldap authentication
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
d07810b02147 added ldap authentication
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
17 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
d07810b02147 added ldap authentication
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
d07810b02147 added ldap authentication
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
d07810b02147 added ldap authentication
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
20 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
d07810b02147 added ldap authentication
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
d07810b02147 added ldap authentication
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
d07810b02147 added ldap authentication
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
d07810b02147 added ldap authentication
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
d07810b02147 added ldap authentication
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
d07810b02147 added ldap authentication
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
26 * POSSIBILITY OF SUCH DAMAGE.
d07810b02147 added ldap authentication
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
27 */
d07810b02147 added ldap authentication
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
28
d07810b02147 added ldap authentication
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
29 #include <stdio.h>
d07810b02147 added ldap authentication
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
30 #include <stdlib.h>
d07810b02147 added ldap authentication
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
31 #include <string.h>
d07810b02147 added ldap authentication
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
32
d07810b02147 added ldap authentication
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
33 #include "ldap_auth.h"
d07810b02147 added ldap authentication
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
34
d07810b02147 added ldap authentication
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
35 AuthDB* create_ldap_authdb(char *name, LDAPConfig *conf) {
d07810b02147 added ldap authentication
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
36 LDAPAuthDB *authdb = malloc(sizeof (LDAPAuthDB));
d07810b02147 added ldap authentication
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
37 authdb->authdb.name = strdup(name);
d07810b02147 added ldap authentication
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
38 authdb->authdb.get_user = ldap_get_user;
d07810b02147 added ldap authentication
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
39 authdb->config = *conf;
d07810b02147 added ldap authentication
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
40
d07810b02147 added ldap authentication
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
41 if (!authdb->config.usersearch) {
d07810b02147 added ldap authentication
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
42 authdb->config.usersearch = "uid";
d07810b02147 added ldap authentication
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
43 }
d07810b02147 added ldap authentication
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
44 if (!authdb->config.groupsearch) {
d07810b02147 added ldap authentication
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
45 authdb->config.groupsearch = "uniquemember";
d07810b02147 added ldap authentication
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
46 }
d07810b02147 added ldap authentication
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
47
d07810b02147 added ldap authentication
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
48 return (AuthDB*) authdb;
d07810b02147 added ldap authentication
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
49 }
d07810b02147 added ldap authentication
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
50
d07810b02147 added ldap authentication
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
51 User* ldap_get_user(AuthDB *db, char *username) {
d07810b02147 added ldap authentication
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
52 LDAPAuthDB *authdb = (LDAPAuthDB*) db;
d07810b02147 added ldap authentication
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
53 LDAPConfig *config = &authdb->config;
d07810b02147 added ldap authentication
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
54
d07810b02147 added ldap authentication
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
55 LDAP *ld = ldap_init(config->hostname, config->port);
d07810b02147 added ldap authentication
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
56 if (ld == NULL) {
d07810b02147 added ldap authentication
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
57 fprintf(stderr, "ldap_init failed\n");
d07810b02147 added ldap authentication
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
58 return NULL;
d07810b02147 added ldap authentication
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
59 }
49
1fd94945796e some fixes
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 48
diff changeset
60 int ldapv = 3;
1fd94945796e some fixes
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 48
diff changeset
61 ldap_set_option(ld, LDAP_OPT_PROTOCOL_VERSION, &ldapv);
38
d07810b02147 added ldap authentication
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
62
d07810b02147 added ldap authentication
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
63 int r = ldap_simple_bind_s(ld, config->binddn, config->bindpw);
d07810b02147 added ldap authentication
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
64 if (r != LDAP_SUCCESS) {
d07810b02147 added ldap authentication
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
65 ldap_unbind(ld);
d07810b02147 added ldap authentication
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
66 fprintf(stderr, "ldap_simple_bind_s failed: %s\n", ldap_err2string(r));
d07810b02147 added ldap authentication
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
67 return NULL;
d07810b02147 added ldap authentication
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
68 }
d07810b02147 added ldap authentication
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
69
d07810b02147 added ldap authentication
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
70 // get the user dn
d07810b02147 added ldap authentication
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
71
d07810b02147 added ldap authentication
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
72 // TODO: use config for filter
d07810b02147 added ldap authentication
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
73 char filter[128];
d07810b02147 added ldap authentication
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
74 int s = snprintf(filter, 127, "uid=%s", username);
d07810b02147 added ldap authentication
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
75 filter[s] = 0;
d07810b02147 added ldap authentication
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
76
d07810b02147 added ldap authentication
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
77 LDAPMessage *result;
d07810b02147 added ldap authentication
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
78 r = ldap_search_s(
d07810b02147 added ldap authentication
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
79 ld,
d07810b02147 added ldap authentication
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
80 config->basedn,
d07810b02147 added ldap authentication
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
81 LDAP_SCOPE_SUBTREE,
d07810b02147 added ldap authentication
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
82 filter,
d07810b02147 added ldap authentication
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
83 NULL,
d07810b02147 added ldap authentication
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
84 0,
d07810b02147 added ldap authentication
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
85 &result);
d07810b02147 added ldap authentication
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
86 if (r != LDAP_SUCCESS) {
d07810b02147 added ldap authentication
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
87 ldap_unbind(ld);
d07810b02147 added ldap authentication
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
88 fprintf(stderr, "ldap_search_s failed\n");
d07810b02147 added ldap authentication
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
89 return NULL;
d07810b02147 added ldap authentication
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
90 }
d07810b02147 added ldap authentication
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
91
d07810b02147 added ldap authentication
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
92 LDAPMessage *msg = ldap_first_entry(ld, result);
d07810b02147 added ldap authentication
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
93 if (msg) {
d07810b02147 added ldap authentication
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
94 LDAPUser *user = malloc(sizeof (LDAPUser));
d07810b02147 added ldap authentication
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
95 if (user != NULL) {
d07810b02147 added ldap authentication
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
96 user->user.verify_password = ldap_user_verify_password;
d07810b02147 added ldap authentication
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
97 user->user.check_group = ldap_user_check_group;
d07810b02147 added ldap authentication
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
98 user->user.free = ldap_user_free;
d07810b02147 added ldap authentication
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
99 user->user.name = username; // must not be freed
d07810b02147 added ldap authentication
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
100
d07810b02147 added ldap authentication
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
101 user->ldap = ld;
d07810b02147 added ldap authentication
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
102 user->userdn = ldap_get_dn(ld, msg);
d07810b02147 added ldap authentication
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
103
d07810b02147 added ldap authentication
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
104 ldap_msgfree(result);
d07810b02147 added ldap authentication
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
105
d07810b02147 added ldap authentication
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
106 return (User*)user;
d07810b02147 added ldap authentication
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
107 }
d07810b02147 added ldap authentication
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
108 }
d07810b02147 added ldap authentication
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
109
d07810b02147 added ldap authentication
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
110 ldap_unbind(ld);
d07810b02147 added ldap authentication
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
111 return NULL;
d07810b02147 added ldap authentication
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
112 }
d07810b02147 added ldap authentication
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
113
d07810b02147 added ldap authentication
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
114 int ldap_user_verify_password(User *u, char *password) {
d07810b02147 added ldap authentication
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
115 LDAPUser *user = (LDAPUser*)u;
d07810b02147 added ldap authentication
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
116
d07810b02147 added ldap authentication
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
117 int r = ldap_simple_bind_s(user->ldap, user->userdn, password);
d07810b02147 added ldap authentication
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
118 if(r == LDAP_SUCCESS) {
d07810b02147 added ldap authentication
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
119 printf("ldap password ok\n");
d07810b02147 added ldap authentication
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
120 return 1;
d07810b02147 added ldap authentication
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
121 } else {
d07810b02147 added ldap authentication
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
122 printf("ldap password not ok\n");
d07810b02147 added ldap authentication
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
123 return 0;
d07810b02147 added ldap authentication
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
124 }
d07810b02147 added ldap authentication
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
125 }
d07810b02147 added ldap authentication
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
126
d07810b02147 added ldap authentication
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
127 int ldap_user_check_group(User *user, char *group) {
d07810b02147 added ldap authentication
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
128 // TODO
d07810b02147 added ldap authentication
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
129 return 0;
d07810b02147 added ldap authentication
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
130 }
d07810b02147 added ldap authentication
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
131
d07810b02147 added ldap authentication
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
132 void ldap_user_free(User *u) {
48
37a512d7b8f6 fixed some memory leaks
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 44
diff changeset
133 LDAPUser *user = (LDAPUser*)u;
38
d07810b02147 added ldap authentication
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
134 ldap_memfree(user->userdn);
d07810b02147 added ldap authentication
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
135 // TODO: use connection pool
d07810b02147 added ldap authentication
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
136 ldap_unbind(user->ldap);
d07810b02147 added ldap authentication
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
137 free(user);
d07810b02147 added ldap authentication
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
138 }

mercurial