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
|
/*
* The ManaPlus Client
* Copyright (C) 2004-2009 The Mana World Development Team
* Copyright (C) 2009-2010 The Mana Developers
* Copyright (C) 2011-2016 The ManaPlus Developers
*
* This file is part of The ManaPlus Client.
*
* This program 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
* 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 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 "net/eathena/messagein.h"
#include "net/net.h"
#include "net/packetcounters.h"
#include "logger.h"
#include <SDL_endian.h>
#include "debug.h"
namespace EAthena
{
MessageIn::MessageIn(const char *const data,
const unsigned int length) :
Net::MessageIn(data, length)
{
}
void MessageIn::postInit(const char *const str,
const unsigned int version)
{
// Read the message ID
mId = readId();
mVersion = version;
IGNOREDEBUGLOG;
DEBUGLOG2("Receive packet", 0, "MessageIn");
#ifdef ENABLEDEBUGLOG
if (mVersion > 0)
{
const std::string verStr = toString(mVersion);
DEBUGLOG2("Version", 0, verStr.c_str());
}
#endif
readInt16(str);
}
uint16_t MessageIn::readId() const
{
int16_t value = -1;
if (mPos + 2 <= mLength)
{
#if SDL_BYTEORDER == SDL_BIG_ENDIAN
int16_t swap;
memcpy(&swap, mData + CAST_SIZE(mPos), sizeof(int16_t));
value = SDL_Swap16(swap);
#else
memcpy(&value, mData + CAST_SIZE(mPos), sizeof(int16_t));
#endif
}
return value;
}
int16_t MessageIn::readInt16(const char *const str)
{
int16_t value = -1;
if (mPos + 2 <= mLength)
{
#if SDL_BYTEORDER == SDL_BIG_ENDIAN
int16_t swap;
memcpy(&swap, mData + CAST_SIZE(mPos), sizeof(int16_t));
value = SDL_Swap16(swap);
#else
memcpy(&value, mData + CAST_SIZE(mPos), sizeof(int16_t));
#endif
}
DEBUGLOG2("readInt16: " + toStringPrint(CAST_U32(
CAST_U16(value))),
mPos, str);
mPos += 2;
PacketCounters::incInBytes(2);
return value;
}
uint16_t MessageIn::readUInt16(const char *const str)
{
uint16_t value = 0xffU;
if (mPos + 2 <= mLength)
{
#if SDL_BYTEORDER == SDL_BIG_ENDIAN
uint16_t swap;
memcpy(&swap, mData + CAST_SIZE(mPos), sizeof(uint16_t));
value = SDL_Swap16(swap);
#else
memcpy(&value, mData + CAST_SIZE(mPos), sizeof(uint16_t));
#endif
}
DEBUGLOG2("readUInt16: " + toStringPrint(CAST_U32(
CAST_U16(value))),
mPos, str);
mPos += 2;
PacketCounters::incInBytes(2);
return value;
}
int32_t MessageIn::readInt32(const char *const str)
{
int32_t value = -1;
if (mPos + 4 <= mLength)
{
#if SDL_BYTEORDER == SDL_BIG_ENDIAN
int32_t swap;
memcpy(&swap, mData + CAST_SIZE(mPos), sizeof(int32_t));
value = SDL_Swap32(swap);
#else
memcpy(&value, mData + CAST_SIZE(mPos), sizeof(int32_t));
#endif
}
DEBUGLOG2("readInt32: " + toStringPrint(CAST_U32(value)),
mPos, str);
mPos += 4;
PacketCounters::incInBytes(4);
return value;
}
BeingId MessageIn::readBeingId(const char *const str)
{
return fromInt(readInt32(str), BeingId);
}
int64_t MessageIn::readInt64(const char *const str)
{
int64_t value = -1;
if (mPos + 8 <= mLength)
{
#if SDL_BYTEORDER == SDL_BIG_ENDIAN
int64_t swap;
memcpy(&swap, mData + CAST_SIZE(mPos), sizeof(int64_t));
value = SDL_Swap64(swap);
#else
memcpy(&value, mData + CAST_SIZE(mPos), sizeof(int64_t));
#endif
}
DEBUGLOG2("readInt64: " + toStringPrint(CAST_U32(value)),
mPos, str);
mPos += 8;
PacketCounters::incInBytes(8);
return value;
}
} // namespace EAthena
|
