File size: 5,744 Bytes
034d0a2 | 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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 | // Copyright 2017 Citra Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#ifdef _WIN32
#include <winsock2.h>
#else
#include <arpa/inet.h>
#endif
#include <cstring>
#include <string>
#include "network/packet.h"
namespace Network {
#ifndef htonll
u64 htonll(u64 x) {
return ((1 == htonl(1)) ? (x) : ((uint64_t)htonl((x)&0xFFFFFFFF) << 32) | htonl((x) >> 32));
}
#endif
#ifndef ntohll
u64 ntohll(u64 x) {
return ((1 == ntohl(1)) ? (x) : ((uint64_t)ntohl((x)&0xFFFFFFFF) << 32) | ntohl((x) >> 32));
}
#endif
void Packet::Append(const void* in_data, std::size_t size_in_bytes) {
if (in_data && (size_in_bytes > 0)) {
std::size_t start = data.size();
data.resize(start + size_in_bytes);
std::memcpy(&data[start], in_data, size_in_bytes);
}
}
void Packet::Read(void* out_data, std::size_t size_in_bytes) {
if (out_data && CheckSize(size_in_bytes)) {
std::memcpy(out_data, &data[read_pos], size_in_bytes);
read_pos += size_in_bytes;
}
}
void Packet::Clear() {
data.clear();
read_pos = 0;
is_valid = true;
}
const void* Packet::GetData() const {
return !data.empty() ? &data[0] : nullptr;
}
void Packet::IgnoreBytes(u32 length) {
read_pos += length;
}
std::size_t Packet::GetDataSize() const {
return data.size();
}
bool Packet::EndOfPacket() const {
return read_pos >= data.size();
}
Packet::operator bool() const {
return is_valid;
}
Packet& Packet::operator>>(bool& out_data) {
u8 value;
if (*this >> value) {
out_data = (value != 0);
}
return *this;
}
Packet& Packet::operator>>(s8& out_data) {
Read(&out_data, sizeof(out_data));
return *this;
}
Packet& Packet::operator>>(u8& out_data) {
Read(&out_data, sizeof(out_data));
return *this;
}
Packet& Packet::operator>>(s16& out_data) {
s16 value = 0;
Read(&value, sizeof(value));
out_data = ntohs(value);
return *this;
}
Packet& Packet::operator>>(u16& out_data) {
u16 value = 0;
Read(&value, sizeof(value));
out_data = ntohs(value);
return *this;
}
Packet& Packet::operator>>(s32& out_data) {
s32 value = 0;
Read(&value, sizeof(value));
out_data = ntohl(value);
return *this;
}
Packet& Packet::operator>>(u32& out_data) {
u32 value = 0;
Read(&value, sizeof(value));
out_data = ntohl(value);
return *this;
}
Packet& Packet::operator>>(s64& out_data) {
s64 value = 0;
Read(&value, sizeof(value));
out_data = ntohll(value);
return *this;
}
Packet& Packet::operator>>(u64& out_data) {
u64 value = 0;
Read(&value, sizeof(value));
out_data = ntohll(value);
return *this;
}
Packet& Packet::operator>>(float& out_data) {
Read(&out_data, sizeof(out_data));
return *this;
}
Packet& Packet::operator>>(double& out_data) {
Read(&out_data, sizeof(out_data));
return *this;
}
Packet& Packet::operator>>(char* out_data) {
// First extract string length
u32 length = 0;
*this >> length;
if ((length > 0) && CheckSize(length)) {
// Then extract characters
std::memcpy(out_data, &data[read_pos], length);
out_data[length] = '\0';
// Update reading position
read_pos += length;
}
return *this;
}
Packet& Packet::operator>>(std::string& out_data) {
// First extract string length
u32 length = 0;
*this >> length;
out_data.clear();
if ((length > 0) && CheckSize(length)) {
// Then extract characters
out_data.assign(&data[read_pos], length);
// Update reading position
read_pos += length;
}
return *this;
}
Packet& Packet::operator<<(bool in_data) {
*this << static_cast<u8>(in_data);
return *this;
}
Packet& Packet::operator<<(s8 in_data) {
Append(&in_data, sizeof(in_data));
return *this;
}
Packet& Packet::operator<<(u8 in_data) {
Append(&in_data, sizeof(in_data));
return *this;
}
Packet& Packet::operator<<(s16 in_data) {
s16 toWrite = htons(in_data);
Append(&toWrite, sizeof(toWrite));
return *this;
}
Packet& Packet::operator<<(u16 in_data) {
u16 toWrite = htons(in_data);
Append(&toWrite, sizeof(toWrite));
return *this;
}
Packet& Packet::operator<<(s32 in_data) {
s32 toWrite = htonl(in_data);
Append(&toWrite, sizeof(toWrite));
return *this;
}
Packet& Packet::operator<<(u32 in_data) {
u32 toWrite = htonl(in_data);
Append(&toWrite, sizeof(toWrite));
return *this;
}
Packet& Packet::operator<<(s64 in_data) {
s64 toWrite = htonll(in_data);
Append(&toWrite, sizeof(toWrite));
return *this;
}
Packet& Packet::operator<<(u64 in_data) {
u64 toWrite = htonll(in_data);
Append(&toWrite, sizeof(toWrite));
return *this;
}
Packet& Packet::operator<<(float in_data) {
Append(&in_data, sizeof(in_data));
return *this;
}
Packet& Packet::operator<<(double in_data) {
Append(&in_data, sizeof(in_data));
return *this;
}
Packet& Packet::operator<<(const char* in_data) {
// First insert string length
u32 length = static_cast<u32>(std::strlen(in_data));
*this << length;
// Then insert characters
Append(in_data, length * sizeof(char));
return *this;
}
Packet& Packet::operator<<(const std::string& in_data) {
// First insert string length
u32 length = static_cast<u32>(in_data.size());
*this << length;
// Then insert characters
if (length > 0)
Append(in_data.c_str(), length * sizeof(std::string::value_type));
return *this;
}
bool Packet::CheckSize(std::size_t size) {
is_valid = is_valid && (read_pos + size <= data.size());
return is_valid;
}
} // namespace Network
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