aboutsummaryrefslogtreecommitdiff
path: root/NorthstarDLL/server/serverchathooks.cpp
blob: d3ac47762bdc74ddf92da75d7daf1a489fd78222 (plain)
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
#include "serverchathooks.h"
#include "shared/exploit_fixes/ns_limits.h"
#include "squirrel/squirrel.h"
#include "server/r2server.h"
#include "util/utils.h"

#include <rapidjson/document.h>
#include <rapidjson/stringbuffer.h>
#include <rapidjson/writer.h>

AUTOHOOK_INIT()

class CServerGameDLL;

class CRecipientFilter
{
	char unknown[58];
};

CServerGameDLL* g_pServerGameDLL;

void(__fastcall* CServerGameDLL__OnReceivedSayTextMessage)(
	CServerGameDLL* self, unsigned int senderPlayerId, const char* text, int channelId);

void(__fastcall* CRecipientFilter__Construct)(CRecipientFilter* self);
void(__fastcall* CRecipientFilter__Destruct)(CRecipientFilter* self);
void(__fastcall* CRecipientFilter__AddAllPlayers)(CRecipientFilter* self);
void(__fastcall* CRecipientFilter__AddRecipient)(CRecipientFilter* self, const CBasePlayer* player);
void(__fastcall* CRecipientFilter__MakeReliable)(CRecipientFilter* self);

void(__fastcall* UserMessageBegin)(CRecipientFilter* filter, const char* messagename);
void(__fastcall* MessageEnd)();
void(__fastcall* MessageWriteByte)(int iValue);
void(__fastcall* MessageWriteString)(const char* sz);
void(__fastcall* MessageWriteBool)(bool bValue);

bool bShouldCallSayTextHook = false;
// clang-format off
AUTOHOOK(_CServerGameDLL__OnReceivedSayTextMessage, server.dll + 0x1595C0,
void, __fastcall, (CServerGameDLL* self, unsigned int senderPlayerId, const char* text, bool isTeam))
// clang-format on
{
	RemoveAsciiControlSequences(const_cast<char*>(text), true);

	// MiniHook doesn't allow calling the base function outside of anywhere but the hook function.
	// To allow bypassing the hook, isSkippingHook can be set.
	if (bShouldCallSayTextHook)
	{
		bShouldCallSayTextHook = false;
		_CServerGameDLL__OnReceivedSayTextMessage(self, senderPlayerId, text, isTeam);
		return;
	}

	// check chat ratelimits
	if (!g_pServerLimits->CheckChatLimits(&g_pClientArray[senderPlayerId - 1]))
		return;

	SQRESULT result = g_pSquirrel<ScriptContext::SERVER>->Call(
		"CServerGameDLL_ProcessMessageStartThread", static_cast<int>(senderPlayerId) - 1, text, isTeam);

	if (result == SQRESULT_ERROR)
		_CServerGameDLL__OnReceivedSayTextMessage(self, senderPlayerId, text, isTeam);
}

void ChatSendMessage(unsigned int playerIndex, const char* text, bool isTeam)
{
	bShouldCallSayTextHook = true;
	CServerGameDLL__OnReceivedSayTextMessage(
		g_pServerGameDLL,
		// Ensure the first bit isn't set, since this indicates a custom message
		(playerIndex + 1) & CUSTOM_MESSAGE_INDEX_MASK,
		text,
		isTeam);
}

void ChatBroadcastMessage(int fromPlayerIndex, int toPlayerIndex, const char* text, bool isTeam, bool isDead, CustomMessageType messageType)
{
	CBasePlayer* toPlayer = NULL;
	if (toPlayerIndex >= 0)
	{
		toPlayer = UTIL_PlayerByIndex(toPlayerIndex + 1);
		if (toPlayer == NULL)
			return;
	}

	// Build a new string where the first byte is the message type
	char sendText[256];
	sendText[0] = (char)messageType;
	strncpy_s(sendText + 1, 255, text, 254);

	// Anonymous custom messages use playerId=0, non-anonymous ones use a player ID with the first bit set
	unsigned int fromPlayerId = fromPlayerIndex < 0 ? 0 : ((fromPlayerIndex + 1) | CUSTOM_MESSAGE_INDEX_BIT);

	CRecipientFilter filter;
	CRecipientFilter__Construct(&filter);
	if (toPlayer == NULL)
	{
		CRecipientFilter__AddAllPlayers(&filter);
	}
	else
	{
		CRecipientFilter__AddRecipient(&filter, toPlayer);
	}
	CRecipientFilter__MakeReliable(&filter);

	UserMessageBegin(&filter, "SayText");
	MessageWriteByte(fromPlayerId);
	MessageWriteString(sendText);
	MessageWriteBool(isTeam);
	MessageWriteBool(isDead);
	MessageEnd();

	CRecipientFilter__Destruct(&filter);
}

ADD_SQFUNC("void", NSSendMessage, "int playerIndex, string text, bool isTeam", "", ScriptContext::SERVER)
{
	int playerIndex = g_pSquirrel<ScriptContext::SERVER>->getinteger(sqvm, 1);
	const char* text = g_pSquirrel<ScriptContext::SERVER>->getstring(sqvm, 2);
	bool isTeam = g_pSquirrel<ScriptContext::SERVER>->getbool(sqvm, 3);

	ChatSendMessage(playerIndex, text, isTeam);

	return SQRESULT_NULL;
}

ADD_SQFUNC(
	"void",
	NSBroadcastMessage,
	"int fromPlayerIndex, int toPlayerIndex, string text, bool isTeam, bool isDead, int messageType",
	"",
	ScriptContext::SERVER)
{
	int fromPlayerIndex = g_pSquirrel<ScriptContext::SERVER>->getinteger(sqvm, 1);
	int toPlayerIndex = g_pSquirrel<ScriptContext::SERVER>->getinteger(sqvm, 2);
	const char* text = g_pSquirrel<ScriptContext::SERVER>->getstring(sqvm, 3);
	bool isTeam = g_pSquirrel<ScriptContext::SERVER>->getbool(sqvm, 4);
	bool isDead = g_pSquirrel<ScriptContext::SERVER>->getbool(sqvm, 5);
	int messageType = g_pSquirrel<ScriptContext::SERVER>->getinteger(sqvm, 6);

	if (messageType < 1)
	{
		g_pSquirrel<ScriptContext::SERVER>->raiseerror(sqvm, fmt::format("Invalid message type {}", messageType).c_str());
		return SQRESULT_ERROR;
	}

	ChatBroadcastMessage(fromPlayerIndex, toPlayerIndex, text, isTeam, isDead, (CustomMessageType)messageType);

	return SQRESULT_NULL;
}

ON_DLL_LOAD("engine.dll", EngineServerChatHooks, (CModule module))
{
	g_pServerGameDLL = module.Offset(0x13F0AA98).RCast<CServerGameDLL*>();
}

ON_DLL_LOAD_RELIESON("server.dll", ServerChatHooks, ServerSquirrel, (CModule module))
{
	AUTOHOOK_DISPATCH_MODULE(server.dll)

	CServerGameDLL__OnReceivedSayTextMessage =
		module.Offset(0x1595C0).RCast<void(__fastcall*)(CServerGameDLL*, unsigned int, const char*, int)>();
	CRecipientFilter__Construct = module.Offset(0x1E9440).RCast<void(__fastcall*)(CRecipientFilter*)>();
	CRecipientFilter__Destruct = module.Offset(0x1E9700).RCast<void(__fastcall*)(CRecipientFilter*)>();
	CRecipientFilter__AddAllPlayers = module.Offset(0x1E9940).RCast<void(__fastcall*)(CRecipientFilter*)>();
	CRecipientFilter__AddRecipient = module.Offset(0x1E9B30).RCast<void(__fastcall*)(CRecipientFilter*, const CBasePlayer*)>();
	CRecipientFilter__MakeReliable = module.Offset(0x1EA4E0).RCast<void(__fastcall*)(CRecipientFilter*)>();

	UserMessageBegin = module.Offset(0x15C520).RCast<void(__fastcall*)(CRecipientFilter*, const char*)>();
	MessageEnd = module.Offset(0x158880).RCast<void(__fastcall*)()>();
	MessageWriteByte = module.Offset(0x158A90).RCast<void(__fastcall*)(int)>();
	MessageWriteString = module.Offset(0x158D00).RCast<void(__fastcall*)(const char*)>();
	MessageWriteBool = module.Offset(0x158A00).RCast<void(__fastcall*)(bool)>();
}