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
|
/*
* InspIRCd -- Internet Relay Chat Daemon
*
* Copyright (C) 2025 Sadie Powell <sadie@witchery.services>
*
* 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/>.
*/
/// $CompilerFlags: find_compiler_flags("libargon2")
/// $LinkerFlags: find_linker_flags("libargon2")
/// $PackageInfo: require_system("alpine") argon2-dev pkgconf
/// $PackageInfo: require_system("arch") argon2 pkgconf
/// $PackageInfo: require_system("darwin") argon2 pkg-config
/// $PackageInfo: require_system("debian~") libargon2-dev pkg-config
#include <argon2.h>
#include "inspircd.h"
#include "modules/hash.h"
struct Argon2Config final
{
uint32_t memory_cost;
uint32_t time_cost;
uint32_t parallelism;
uint32_t hash_length;
uint32_t salt_length;
const argon2_type type;
Argon2Config(argon2_type at)
: type(at)
{
}
void ReadConfig(const std::string& tagname)
{
const auto& tag = ServerInstance->Config->ConfValue(tagname);
const auto& ptag = ServerInstance->Config->ConfValue("argon2");
auto get_value = [&tag, &ptag](const std::string& key, uint32_t def, uint32_t min, uint32_t max) {
return tag->getNum<uint32_t>(key, ptag->getNum<uint32_t>(key, def, min, max), min, max);
};
memory_cost = get_value("memorycost", 131'072, ARGON2_MIN_MEMORY, ARGON2_MAX_MEMORY);
time_cost = get_value("timecost", 3, 1, 1000);
parallelism = get_value("parallelism", 1, ARGON2_MIN_THREADS, ARGON2_MAX_THREADS);
hash_length = get_value("length", 32, ARGON2_MIN_OUTLEN, ARGON2_MAX_OUTLEN);
salt_length = get_value("saltlength", hash_length, ARGON2_MIN_SALT_LENGTH, ARGON2_MAX_SALT_LENGTH);
}
};
class Argon2Context final
: public Hash::Context
{
private:
std::string buffer;
const Argon2Config& config;
std::string GenerateSalt()
{
std::vector<char> salt(config.salt_length);
ServerInstance->GenRandom(salt.data(), salt.size());
return std::string(salt.data(), salt.size());
}
public:
Argon2Context(const Argon2Config& c)
: config(c)
{
}
void Update(const unsigned char *data, size_t len) override
{
buffer.append(reinterpret_cast<const char *>(data), len);
}
std::string Finalize() override
{
auto salt = GenerateSalt();
// Calculate the size of and allocate the output buffer.
auto length = argon2_encodedlen(config.time_cost, config.memory_cost, config.parallelism,
config.salt_length, config.hash_length, config.type);
std::vector<char> digest(length);
auto result = argon2_hash(config.time_cost, config.memory_cost, config.parallelism,
buffer.c_str(), buffer.length(), salt.c_str(), salt.length(), nullptr,
config.hash_length, digest.data(), digest.size(), config.type,
ARGON2_VERSION_NUMBER);
if (result == ARGON2_OK)
return std::string(digest.data(), digest.size());
ServerInstance->Logs.Debug("HASH", "Unable to generate an Argon2 hash: {}", argon2_error_message(result));
return {};
}
};
class Argon2Provider final
: public Hash::Provider
{
public:
Argon2Config config;
Argon2Provider(Module *mod, argon2_type at)
: Hash::Provider(mod, argon2_type2string(at, 0))
, config(at)
{
config.ReadConfig(GetAlgorithm());
}
bool Compare(const std::string &hash, const std::string &plain) override
{
return argon2_verify(hash.c_str(), plain.c_str(), plain.length(), config.type) == ARGON2_OK;
}
std::unique_ptr<Hash::Context> CreateContext() override
{
return std::make_unique<Argon2Context>(this->config);
}
std::string ToPrintable(const std::string &hash) override
{
// We have no way to make this printable without the creating context
// so we always return the printed form.
return hash;
}
};
class ModuleArgon2 final
: public Module
{
private:
Argon2Provider argon2dalgo;
Argon2Provider argon2ialgo;
Argon2Provider argon2idalgo;
public:
ModuleArgon2()
: Module(VF_VENDOR, "Allows other modules to generate Argon2 hashes.")
, argon2dalgo(this, Argon2_d)
, argon2ialgo(this, Argon2_i)
, argon2idalgo(this, Argon2_id)
{
}
void init() override
{
argon2dalgo.Check({
{ "$argon2d$v=19$m=10,t=10,p=1$VGhlIHF1aWNrIGJyb3duIGZveCBqdW1wcyBvdmVyIHRoZSBsYXp5IGRvZw$fNS8JrvE8EqKwQ", "" },
{ "$argon2d$v=19$m=10,t=10,p=1$VGhlIHF1aWNrIGJyb3duIGZveCBqdW1wcyBvdmVyIHRoZSBsYXp5IGRvZw$hTvpprMF0TwszQ", "The quick brown fox jumps over the lazy dog" },
});
argon2ialgo.Check({
{ "$argon2i$v=19$m=10,t=10,p=1$VGhlIHF1aWNrIGJyb3duIGZveCBqdW1wcyBvdmVyIHRoZSBsYXp5IGRvZw$neE6hYxRp4TCJA", "" },
{ "$argon2i$v=19$m=10,t=10,p=1$VGhlIHF1aWNrIGJyb3duIGZveCBqdW1wcyBvdmVyIHRoZSBsYXp5IGRvZw$/JAt4FdP1MFD+A", "The quick brown fox jumps over the lazy dog" },
});
argon2idalgo.Check({
{ "$argon2id$v=19$m=10,t=10,p=1$VGhlIHF1aWNrIGJyb3duIGZveCBqdW1wcyBvdmVyIHRoZSBsYXp5IGRvZw$wuNeHixFDS6Tkg", "" },
{ "$argon2id$v=19$m=10,t=10,p=1$VGhlIHF1aWNrIGJyb3duIGZveCBqdW1wcyBvdmVyIHRoZSBsYXp5IGRvZw$Po8RcmxZ7vHmdg", "The quick brown fox jumps over the lazy dog" },
});
}
void ReadConfig(ConfigStatus& status) override
{
if (status.initial)
return; // Already read.
argon2ialgo.config.ReadConfig(argon2ialgo.GetAlgorithm());
argon2dalgo.config.ReadConfig(argon2dalgo.GetAlgorithm());
argon2idalgo.config.ReadConfig(argon2idalgo.GetAlgorithm());
}
};
MODULE_INIT(ModuleArgon2)
|
