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
|
/* Copyright (C) 2025 Wildfire Games.
* This file is part of 0 A.D.
*
* 0 A.D. 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, either version 2 of the License, or
* (at your option) any later version.
*
* 0 A.D. 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 0 A.D. If not, see <http://www.gnu.org/licenses/>.
*/
#include "precompiled.h"
#include "NetProtocol.h"
#include "ps/CStr.h"
#include <algorithm>
#include <cstdint>
namespace
{
template <typename ModType>
std::string GetModName(const ModType& mod)
{
return mod.m_Name + "-" + mod.m_Version;
}
}
std::optional<HandshakeError> CheckHandshake(const CSrvHandshakeMessage& serverMessage, const CCliHandshakeMessage& clientMessage)
{
if (serverMessage.m_EngineVersion != clientMessage.m_EngineVersion)
return HandshakeError{"engine", clientMessage.m_EngineVersion, serverMessage.m_EngineVersion};
const auto& serverMods = serverMessage.m_EnabledMods;
const auto& clientMods = clientMessage.m_EnabledMods;
for (uint32_t i = 0; i < std::max(clientMods.size(), serverMods.size()); ++i)
{
if (i >= serverMods.size())
return HandshakeError{"mod", GetModName(clientMods[i]), ""};
if (i >= clientMods.size())
return HandshakeError{"mod", "", GetModName(serverMods[i])};
const std::string serverMod = GetModName(serverMods[i]);
const std::string clientMod = GetModName(clientMods[i]);
// Client and server have different mods enabled, or mods enabled in a different order
if (clientMod != serverMod)
return HandshakeError{"mod", clientMod, serverMod};
}
return {};
}
|
