1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
|
/*
* UserConfigBackendKrb5.cpp
*
* Copyright (C) 2009 Matthias Schiffer <matthias@gamezock.de>
*
* This program is free software: you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as published by the
* Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
* See the GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License along
* with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "UserConfigBackendKrb5.h"
#include <Core/ConfigEntry.h>
#include <cstring>
namespace Mad {
namespace Modules {
namespace UserConfigBackendKrb5 {
bool UserConfigBackendKrb5::connect() {
if(principal.empty()) {
application->log(Core::LoggerBase::USER, Core::LoggerBase::ERROR, "UserConfigBackendKrb5: no principal given");
return false;
}
if(realm.empty()) {
application->log(Core::LoggerBase::USER, Core::LoggerBase::ERROR, "UserConfigBackendKrb5: no realm given and no default realm available");
return false;
}
if(handle) {
kadm5_destroy(handle);
handle = 0;
}
kadm5_config_params params;
params.realm = const_cast<char*>(realm.c_str());
params.mask = KADM5_CONFIG_REALM;
if(!server.empty()) {
params.admin_server = const_cast<char*>(server.c_str());
params.mask |= KADM5_CONFIG_ADMIN_SERVER;
}
std::string princ = principal;
if(princ.find('@') == std::string::npos)
princ += "@" + realm;
if(!password.empty() && keytab.empty()) {
krb5_error_code err = kadm5_init_with_password(const_cast<char*>(princ.c_str()), const_cast<char*>(password.c_str()),
const_cast<char*>(KADM5_ADMIN_SERVICE), ¶ms, KADM5_STRUCT_VERSION, KADM5_API_VERSION_2, 0, &handle);
if(err) {
application->logf(Core::LoggerBase::USER, Core::LoggerBase::ERROR, "kadm5_init_with_password: %s", std::strerror(err));
return false;
}
}
else {
char *keytabName = 0;
if(!keytab.empty())
keytabName = const_cast<char*>(keytab.c_str());
krb5_error_code err = kadm5_init_with_skey(const_cast<char*>(princ.c_str()), keytabName,
const_cast<char*>(KADM5_ADMIN_SERVICE), ¶ms, KADM5_STRUCT_VERSION, KADM5_API_VERSION_2, 0, &handle);
if(err) {
application->logf(Core::LoggerBase::USER, Core::LoggerBase::ERROR, "kadm5_init_with_skey: %s", std::strerror(err));
return false;
}
}
application->log(Core::LoggerBase::USER, Core::LoggerBase::VERBOSE, "Connected to kerberos admin server.");
return true;
}
bool UserConfigBackendKrb5::handleConfigEntry(const Core::ConfigEntry &entry, bool /*handled*/) {
if(!entry[0].getKey().matches("UserManager"))
return false;
if(entry[1].empty())
return true;
if(!entry[1].getKey().matches("Krb5"))
return false;
if(entry[2].getKey().matches("Realm")) {
if(entry[3].empty())
realm = entry[2][0];
}
else if(entry[2].getKey().matches("Principal")) {
if(entry[3].empty())
principal = entry[2][0];
}
else if(entry[2].getKey().matches("Server")) {
if(entry[3].empty())
server = entry[2][0];
}
else if(entry[2].getKey().matches("Password")) {
if(entry[3].empty())
password = entry[2][0];
}
else if(entry[2].getKey().matches("Keytab")) {
if(entry[3].empty())
keytab = entry[2][0];
}
else if(!entry[2].empty())
return false;
return true;
}
void UserConfigBackendKrb5::checkUserInfo(const Common::UserInfo &userInfo) throw(Core::Exception) {
if(std::strcspn(userInfo.getUsername().c_str(), "/@") != userInfo.getUsername().length())
throw Core::Exception(Core::Exception::INVALID_INPUT);
}
void UserConfigBackendKrb5::addUser(const Common::UserInfo &userInfo) throw(Core::Exception) {
std::string princStr = userInfo.getUsername() + "@" + realm;
kadm5_principal_ent_rec princ;
krb5_error_code err = krb5_parse_name(context, princStr.c_str(), &princ.principal);
if(err)
throw Core::Exception("krb5_parse_name", Core::Exception::INTERNAL_ERRNO, err);
princ.attributes = KRB5_KDB_DISALLOW_ALL_TIX;
char dummybuf[128];
for(int i = 0; i < 128; ++i)
dummybuf[i] = (i+1)%128;
err = kadm5_create_principal(handle, &princ, KADM5_PRINCIPAL|KADM5_ATTRIBUTES, dummybuf);
if(err) {
krb5_free_principal(context, princ.principal);
throw Core::Exception("kadm5_create_principal", Core::Exception::INTERNAL_ERRNO, err);
}
err = kadm5_randkey_principal(handle, princ.principal, 0, 0);
if(err) {
krb5_free_principal(context, princ.principal);
throw Core::Exception("kadm5_randkey_principal", Core::Exception::INTERNAL_ERRNO, err);
}
princ.attributes = 0;
err = kadm5_modify_principal(handle, &princ, KADM5_ATTRIBUTES);
krb5_free_principal(context, princ.principal);
if(err)
throw Core::Exception("kadm5_modify_principal", Core::Exception::INTERNAL_ERRNO, err);
}
void UserConfigBackendKrb5::updateUser(const Common::UserInfo &oldUserInfo, const Common::UserInfo &userInfo) throw(Core::Exception) {
if(oldUserInfo.getUsername() == userInfo.getUsername())
return;
deleteUser(oldUserInfo);
addUser(userInfo);
}
void UserConfigBackendKrb5::deleteUser(const Common::UserInfo &userInfo) throw(Core::Exception) {
std::string princStr = userInfo.getUsername() + "@" + realm;
krb5_principal princ;
krb5_error_code err = krb5_parse_name(context, princStr.c_str(), &princ);
if(err)
throw Core::Exception("krb5_parse_name", Core::Exception::INTERNAL_ERRNO, err);
/*err = */kadm5_delete_principal(handle, princ);
krb5_free_principal(context, princ);
//if(err)
// throw Core::Exception("kadm5_delete_principal", Core::Exception::INTERNAL_ERRNO, err);
}
}
}
}
|
