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
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
|
/*
* InspIRCd -- Internet Relay Chat Daemon
*
* Copyright (C) 2015 Daniel Vassdal <shutter@canternet.org>
* Copyright (C) 2013, 2017-2019 Sadie Powell <sadie@witchery.services>
* Copyright (C) 2012-2015 Attila Molnar <attilamolnar@hush.com>
* Copyright (C) 2012, 2019 Robby <robby@chatbelgie.be>
* Copyright (C) 2009-2010 Daniel De Graaf <danieldg@inspircd.org>
* Copyright (C) 2007-2008 Robin Burchell <robin+git@viroteck.net>
* Copyright (C) 2007 Dennis Friis <peavey@inspircd.org>
* Copyright (C) 2005, 2007-2008, 2010 Craig Edwards <brain@inspircd.org>
*
* This file is part of InspIRCd. InspIRCd is free software: you can
* redistribute it and/or modify it under the terms of the GNU General Public
* License as published by the Free Software Foundation, version 2.
*
* 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 General Public License for more
* details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "inspircd.h"
#include "modules/sql.h"
#include "modules/hash.h"
#include "modules/ssl.h"
enum AuthState {
AUTH_STATE_NONE = 0,
AUTH_STATE_BUSY = 1,
AUTH_STATE_FAIL = 2
};
class AuthQuery : public SQL::Query
{
public:
const std::string uid;
LocalIntExt& pendingExt;
bool verbose;
const std::string& kdf;
const std::string& pwcolumn;
AuthQuery(Module* me, const std::string& u, LocalIntExt& e, bool v, const std::string& kd, const std::string& pwcol)
: SQL::Query(me)
, uid(u)
, pendingExt(e)
, verbose(v)
, kdf(kd)
, pwcolumn(pwcol)
{
}
void OnResult(SQL::Result& res) CXX11_OVERRIDE
{
LocalUser* user = IS_LOCAL(ServerInstance->FindUUID(uid));
if (!user)
return;
if (res.Rows())
{
if (!kdf.empty())
{
HashProvider* hashprov = ServerInstance->Modules->FindDataService<HashProvider>("hash/" + kdf);
if (!hashprov)
{
if (verbose)
ServerInstance->SNO->WriteGlobalSno('a', "Forbidden connection from %s (a provider for %s was not loaded)", user->GetFullRealHost().c_str(), kdf.c_str());
pendingExt.set(user, AUTH_STATE_FAIL);
return;
}
size_t colindex = 0;
if (!pwcolumn.empty() && !res.HasColumn(pwcolumn, colindex))
{
if (verbose)
ServerInstance->SNO->WriteGlobalSno('a', "Forbidden connection from %s (the column specified (%s) was not returned)", user->GetFullRealHost().c_str(), pwcolumn.c_str());
pendingExt.set(user, AUTH_STATE_FAIL);
return;
}
SQL::Row row;
while (res.GetRow(row))
{
if (hashprov->Compare(user->password, row[colindex]))
{
pendingExt.set(user, AUTH_STATE_NONE);
return;
}
}
if (verbose)
ServerInstance->SNO->WriteGlobalSno('a', "Forbidden connection from %s (password from the SQL query did not match the user provided password)", user->GetFullRealHost().c_str());
pendingExt.set(user, AUTH_STATE_FAIL);
return;
}
pendingExt.set(user, AUTH_STATE_NONE);
}
else
{
if (verbose)
ServerInstance->SNO->WriteGlobalSno('a', "Forbidden connection from %s (SQL query returned no matches)", user->GetFullRealHost().c_str());
pendingExt.set(user, AUTH_STATE_FAIL);
}
}
void OnError(SQL::Error& error) CXX11_OVERRIDE
{
User* user = ServerInstance->FindNick(uid);
if (!user)
return;
pendingExt.set(user, AUTH_STATE_FAIL);
if (verbose)
ServerInstance->SNO->WriteGlobalSno('a', "Forbidden connection from %s (SQL query failed: %s)", user->GetFullRealHost().c_str(), error.ToString());
}
};
class ModuleSQLAuth : public Module
{
LocalIntExt pendingExt;
dynamic_reference<SQL::Provider> SQL;
UserCertificateAPI sslapi;
std::string freeformquery;
std::string killreason;
std::string allowpattern;
bool verbose;
std::vector<std::string> hash_algos;
std::string kdf;
std::string pwcolumn;
public:
ModuleSQLAuth()
: pendingExt("sqlauth-wait", ExtensionItem::EXT_USER, this)
, SQL(this, "SQL")
, sslapi(this)
{
}
void ReadConfig(ConfigStatus& status) CXX11_OVERRIDE
{
ConfigTag* conf = ServerInstance->Config->ConfValue("sqlauth");
std::string dbid = conf->getString("dbid");
if (dbid.empty())
SQL.SetProvider("SQL");
else
SQL.SetProvider("SQL/" + dbid);
freeformquery = conf->getString("query");
killreason = conf->getString("killreason");
allowpattern = conf->getString("allowpattern");
verbose = conf->getBool("verbose");
kdf = conf->getString("kdf");
pwcolumn = conf->getString("column");
hash_algos.clear();
irc::commasepstream algos(conf->getString("hash", "md5,sha256"));
std::string algo;
while (algos.GetToken(algo))
hash_algos.push_back(algo);
}
ModResult OnUserRegister(LocalUser* user) CXX11_OVERRIDE
{
// Note this is their initial (unresolved) connect block
ConfigTag* tag = user->MyClass->config;
if (!tag->getBool("usesqlauth", true))
return MOD_RES_PASSTHRU;
if (!allowpattern.empty() && InspIRCd::Match(user->nick,allowpattern))
return MOD_RES_PASSTHRU;
if (pendingExt.get(user))
return MOD_RES_PASSTHRU;
if (!SQL)
{
ServerInstance->SNO->WriteGlobalSno('a', "Forbidden connection from %s (SQL database not present)", user->GetFullRealHost().c_str());
ServerInstance->Users->QuitUser(user, killreason);
return MOD_RES_PASSTHRU;
}
pendingExt.set(user, AUTH_STATE_BUSY);
SQL::ParamMap userinfo;
SQL::PopulateUserInfo(user, userinfo);
userinfo["pass"] = user->password;
userinfo["certfp"] = sslapi ? sslapi->GetFingerprint(user) : "";
for (std::vector<std::string>::const_iterator it = hash_algos.begin(); it != hash_algos.end(); ++it)
{
HashProvider* hashprov = ServerInstance->Modules->FindDataService<HashProvider>("hash/" + *it);
if (hashprov && !hashprov->IsKDF())
userinfo[*it + "pass"] = hashprov->Generate(user->password);
}
SQL->Submit(new AuthQuery(this, user->uuid, pendingExt, verbose, kdf, pwcolumn), freeformquery, userinfo);
return MOD_RES_PASSTHRU;
}
ModResult OnCheckReady(LocalUser* user) CXX11_OVERRIDE
{
switch (pendingExt.get(user))
{
case AUTH_STATE_NONE:
return MOD_RES_PASSTHRU;
case AUTH_STATE_BUSY:
return MOD_RES_DENY;
case AUTH_STATE_FAIL:
ServerInstance->Users->QuitUser(user, killreason);
return MOD_RES_DENY;
}
return MOD_RES_PASSTHRU;
}
Version GetVersion() CXX11_OVERRIDE
{
return Version("Allows connecting users to be authenticated against an arbitrary SQL table.", VF_VENDOR);
}
};
MODULE_INIT(ModuleSQLAuth)
|
