forked from nydrani/maplereverence
-
Notifications
You must be signed in to change notification settings - Fork 0
/
mapleaccessor.cpp
246 lines (191 loc) · 5.73 KB
/
mapleaccessor.cpp
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
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
#include <iostream>
#include <fstream>
#include <iterator>
#include <algorithm>
#include <codecvt>
#include <locale>
#include "wztool.hpp"
#include "mapleaccessor.hpp"
int8_t MapleAccessor::readByte() {
//std::cout << "CurPos<<: " << stream.tellg() << '\n';
int8_t b;
stream.read(reinterpret_cast<char *>(&b), sizeof(b));
return b;
}
uint8_t MapleAccessor::readUnsignedByte() {
//std::cout << "CurPos<<: " << stream.tellg() << '\n';
uint8_t b;
stream.read(reinterpret_cast<char *>(&b), sizeof(b));
return b;
}
int16_t MapleAccessor::readShort() {
//std::cout << "CurPos<<: " << stream.tellg() << '\n';
int16_t s;
stream.read(reinterpret_cast<char *>(&s), sizeof(s));
return s;
}
uint16_t MapleAccessor::readUnsignedShort() {
//std::cout << "CurPos<<: " << stream.tellg() << '\n';
uint16_t s;
stream.read(reinterpret_cast<char *>(&s), sizeof(s));
return s;
}
int32_t MapleAccessor::readInt() {
//std::cout << "CurPos<<: " << stream.tellg() << '\n';
int32_t i;
stream.read(reinterpret_cast<char *>(&i), sizeof(i));
return i;
}
uint32_t MapleAccessor::readUnsignedInt() {
//std::cout << "CurPos<<: " << stream.tellg() << '\n';
uint32_t i;
stream.read(reinterpret_cast<char *>(&i), sizeof(i));
return i;
}
int64_t MapleAccessor::readLong() {
//std::cout << "CurPos<<: " << stream.tellg() << '\n';
int64_t l;
stream.read(reinterpret_cast<char *>(&l), sizeof(l));
return l;
}
uint64_t MapleAccessor::readUnsignedLong() {
//std::cout << "CurPos<<: " << stream.tellg() << '\n';
uint64_t l;
stream.read(reinterpret_cast<char *>(&l), sizeof(l));
return l;
}
float MapleAccessor::readFloat() {
//std::cout << "CurPos<<: " << stream.tellg() << '\n';
float f;
stream.read(reinterpret_cast<char *>(&f), sizeof(f));
return f;
}
double MapleAccessor::readDouble() {
//std::cout << "CurPos<<: " << stream.tellg() << '\n';
double d;
stream.read(reinterpret_cast<char *>(&d), sizeof(d));
return d;
}
std::string MapleAccessor::readString() {
//std::cout << "CurPos<<: " << stream.tellg() << '\n';
std::string string;
std::getline(stream, string, '\0' );
return string;
}
std::string MapleAccessor::readString(int length) {
std::string string;
for (int i = 0; i < length; ++i) {
uint8_t val = readUnsignedByte();
string += val;
}
return string;
}
int32_t MapleAccessor::readCompressedInt() {
int8_t flag = readByte();
int32_t val = flag;
if (flag == -128) {
val = readInt();
}
return val;
}
float MapleAccessor::readCompressedFloat() {
int8_t flag = readByte();
float val = 0;
if (flag == -128) {
val = readFloat();
}
return val;
}
std::string MapleAccessor::readEncryptedString() {
int8_t flag = readByte();
int32_t strLength;
std::string string;
// todo read hex again
if (flag == 0) {
return string;
}
// 2 byte char
if (flag > 0) {
// @TODO remove when done
std::cout << "~~~~~~DECRYPTING UNICODE~~~~~\n";
std::cout << tell() << '\n';
uint16_t mask = 0xAAAA;
// maximum number (127) (flag for compression)
if (flag == 0x7f) {
strLength = readInt();
} else {
strLength = flag;
}
if (strLength <= 0) {
std::string string("String length must be greater than 0");
throw std::invalid_argument(string);
}
std::u16string unicodeString;
// decrypt string
for (int i = 0; i < strLength; ++i) {
uint16_t encryptedChar = readUnsignedShort();
encryptedChar ^= mask;
++mask;
unicodeString += encryptedChar;
}
unicodeString = maplereverence::xorStringUnicode(unicodeString);
// convert to normal string --> this is aids as fk because cpp sucks
std::wstring_convert<std::codecvt_utf8<char16_t>, char16_t> cv;
string = cv.to_bytes(unicodeString);
std::cout << string << ' ' << stream.tellg() << '\n';
}
// 1 byte char
if (flag < 0) {
// minimum number (-128) (flag for compression)
if (flag == -0x80) {
strLength = readInt();
} else {
strLength = -flag;
}
if (strLength <= 0) {
std::string string("String length must be greater than 0");
throw std::invalid_argument(string);
}
string = readString(strLength);
// decrypt string
uint8_t mask = 0xAA;
for (int i = 0; i < strLength; ++i) {
string.at(i) ^= mask;
++mask;
}
string = maplereverence::xorStringAscii(string);
std::cout << string << ' ' << stream.tellg() << '\n';
}
return string;
}
std::string MapleAccessor::readEncryptedString(uint32_t offset) {
auto curPos = stream.tellg();
stream.seekg(offset, std::ios::beg);
std::string string = readEncryptedString();
stream.seekg(curPos);
return string;
}
std::vector<uint8_t> MapleAccessor::readData(uint32_t length) {
// initialise and reserve length
std::vector<uint8_t> data;
data.reserve(length);
// extract data
std::copy_n(std::istreambuf_iterator<char>(stream),
length, std::back_inserter(data));
return data;
}
void MapleAccessor::seek(std::ifstream::pos_type pos) {
stream.seekg(pos);
}
void MapleAccessor::seek(std::ifstream::off_type off, std::ios_base::seekdir dir) {
stream.seekg(off, dir);
}
std::ifstream::pos_type MapleAccessor::tell() {
return stream.tellg();
}
bool MapleAccessor::is_open() const {
return stream.is_open();
}
std::ifstream& MapleAccessor::getStream() {
return stream;
}