3 Copyright (C) 2015 nerzhul, Loic Blot <loic.blot@unix-experience.fr>
5 This program is free software; you can redistribute it and/or modify
6 it under the terms of the GNU Lesser General Public License as published by
7 the Free Software Foundation; either version 2.1 of the License, or
8 (at your option) any later version.
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU Lesser General Public License for more details.
15 You should have received a copy of the GNU Lesser General Public License along
16 with this program; if not, write to the Free Software Foundation, Inc.,
17 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
20 #include "networkpacket.h"
22 #include "exceptions.h"
23 #include "util/serialize.h"
25 NetworkPacket::NetworkPacket(u16 command, u32 datasize, u16 peer_id):
26 m_datasize(datasize), m_read_offset(0), m_command(command), m_peer_id(peer_id)
28 m_data.resize(m_datasize);
31 NetworkPacket::NetworkPacket(u16 command, u32 datasize):
32 m_datasize(datasize), m_read_offset(0), m_command(command), m_peer_id(0)
34 m_data.resize(m_datasize);
37 NetworkPacket::~NetworkPacket()
42 void NetworkPacket::checkReadOffset(u32 from_offset, u32 field_size)
44 if (from_offset + field_size > m_datasize) {
46 ss << "Reading outside packet (offset: " <<
47 from_offset << ", packet size: " << getSize() << ")";
48 throw PacketError(ss.str());
52 void NetworkPacket::putRawPacket(u8 *data, u32 datasize, u16 peer_id)
54 // If a m_command is already set, we are rewriting on same packet
55 // This is not permitted
56 assert(m_command == 0);
58 m_datasize = datasize - 2;
61 // split command and datas
62 m_command = readU16(&data[0]);
63 m_data = std::vector<u8>(&data[2], &data[2 + m_datasize]);
66 char* NetworkPacket::getString(u32 from_offset)
68 checkReadOffset(from_offset, 0);
70 return (char*)&m_data[from_offset];
73 void NetworkPacket::putRawString(const char* src, u32 len)
75 if (m_read_offset + len > m_datasize) {
76 m_datasize = m_read_offset + len;
77 m_data.resize(m_datasize);
80 memcpy(&m_data[m_read_offset], src, len);
84 NetworkPacket& NetworkPacket::operator>>(std::string& dst)
86 checkReadOffset(m_read_offset, 2);
87 u16 strLen = readU16(&m_data[m_read_offset]);
88 m_read_offset += sizeof(u16);
96 checkReadOffset(m_read_offset, strLen);
99 dst.append((char*)&m_data[m_read_offset], strLen);
101 m_read_offset += strLen;
105 NetworkPacket& NetworkPacket::operator<<(std::string src)
107 u16 msgsize = src.size();
108 if (msgsize > 0xFFFF) {
114 putRawString(src.c_str(), (u32)msgsize);
119 void NetworkPacket::putLongString(std::string src)
121 u32 msgsize = src.size();
122 if (msgsize > 0xFFFFFFFF) {
123 msgsize = 0xFFFFFFFF;
128 putRawString(src.c_str(), msgsize);
131 NetworkPacket& NetworkPacket::operator>>(std::wstring& dst)
133 checkReadOffset(m_read_offset, 2);
134 u16 strLen = readU16(&m_data[m_read_offset]);
143 checkReadOffset(m_read_offset, strLen * 2);
146 for(u16 i=0; i<strLen; i++) {
147 wchar_t c16 = readU16(&m_data[m_read_offset]);
149 m_read_offset += sizeof(u16);
155 NetworkPacket& NetworkPacket::operator<<(std::wstring src)
157 u16 msgsize = src.size();
158 if (msgsize > 0xFFFF) {
165 for (u16 i=0; i<msgsize; i++) {
166 *this << (u16) src[i];
172 std::string NetworkPacket::readLongString()
174 checkReadOffset(m_read_offset, 4);
175 u32 strLen = readU32(&m_data[m_read_offset]);
182 checkReadOffset(m_read_offset, strLen);
187 dst.append((char*)&m_data[m_read_offset], strLen);
189 m_read_offset += strLen;
194 NetworkPacket& NetworkPacket::operator>>(char& dst)
196 checkReadOffset(m_read_offset, 1);
198 dst = readU8(&m_data[m_read_offset]);
204 char NetworkPacket::getChar(u32 offset)
206 checkReadOffset(offset, 1);
208 return readU8(&m_data[offset]);
211 NetworkPacket& NetworkPacket::operator<<(char src)
215 writeU8(&m_data[m_read_offset], src);
221 NetworkPacket& NetworkPacket::operator<<(u8 src)
225 writeU8(&m_data[m_read_offset], src);
231 NetworkPacket& NetworkPacket::operator<<(bool src)
235 writeU8(&m_data[m_read_offset], src);
241 NetworkPacket& NetworkPacket::operator<<(u16 src)
245 writeU16(&m_data[m_read_offset], src);
251 NetworkPacket& NetworkPacket::operator<<(u32 src)
255 writeU32(&m_data[m_read_offset], src);
261 NetworkPacket& NetworkPacket::operator<<(u64 src)
265 writeU64(&m_data[m_read_offset], src);
271 NetworkPacket& NetworkPacket::operator<<(float src)
275 writeF1000(&m_data[m_read_offset], src);
281 NetworkPacket& NetworkPacket::operator>>(bool& dst)
283 checkReadOffset(m_read_offset, 1);
285 dst = readU8(&m_data[m_read_offset]);
291 NetworkPacket& NetworkPacket::operator>>(u8& dst)
293 checkReadOffset(m_read_offset, 1);
295 dst = readU8(&m_data[m_read_offset]);
301 u8 NetworkPacket::getU8(u32 offset)
303 checkReadOffset(offset, 1);
305 return readU8(&m_data[offset]);
308 u8* NetworkPacket::getU8Ptr(u32 from_offset)
310 if (m_datasize == 0) {
314 checkReadOffset(from_offset, 1);
316 return (u8*)&m_data[from_offset];
319 NetworkPacket& NetworkPacket::operator>>(u16& dst)
321 checkReadOffset(m_read_offset, 2);
323 dst = readU16(&m_data[m_read_offset]);
329 u16 NetworkPacket::getU16(u32 from_offset)
331 checkReadOffset(from_offset, 2);
333 return readU16(&m_data[from_offset]);
336 NetworkPacket& NetworkPacket::operator>>(u32& dst)
338 checkReadOffset(m_read_offset, 4);
340 dst = readU32(&m_data[m_read_offset]);
346 NetworkPacket& NetworkPacket::operator>>(u64& dst)
348 checkReadOffset(m_read_offset, 8);
350 dst = readU64(&m_data[m_read_offset]);
356 NetworkPacket& NetworkPacket::operator>>(float& dst)
358 checkReadOffset(m_read_offset, 4);
360 dst = readF1000(&m_data[m_read_offset]);
366 NetworkPacket& NetworkPacket::operator>>(v2f& dst)
368 checkReadOffset(m_read_offset, 8);
370 dst = readV2F1000(&m_data[m_read_offset]);
376 NetworkPacket& NetworkPacket::operator>>(v3f& dst)
378 checkReadOffset(m_read_offset, 12);
380 dst = readV3F1000(&m_data[m_read_offset]);
386 NetworkPacket& NetworkPacket::operator>>(s16& dst)
388 checkReadOffset(m_read_offset, 2);
390 dst = readS16(&m_data[m_read_offset]);
396 NetworkPacket& NetworkPacket::operator<<(s16 src)
402 NetworkPacket& NetworkPacket::operator>>(s32& dst)
404 checkReadOffset(m_read_offset, 4);
406 dst = readS32(&m_data[m_read_offset]);
412 NetworkPacket& NetworkPacket::operator<<(s32 src)
418 NetworkPacket& NetworkPacket::operator>>(v3s16& dst)
420 checkReadOffset(m_read_offset, 6);
422 dst = readV3S16(&m_data[m_read_offset]);
428 NetworkPacket& NetworkPacket::operator>>(v2s32& dst)
430 checkReadOffset(m_read_offset, 8);
432 dst = readV2S32(&m_data[m_read_offset]);
438 NetworkPacket& NetworkPacket::operator>>(v3s32& dst)
440 checkReadOffset(m_read_offset, 12);
442 dst = readV3S32(&m_data[m_read_offset]);
448 NetworkPacket& NetworkPacket::operator<<(v2f src)
450 *this << (float) src.X;
451 *this << (float) src.Y;
455 NetworkPacket& NetworkPacket::operator<<(v3f src)
457 *this << (float) src.X;
458 *this << (float) src.Y;
459 *this << (float) src.Z;
463 NetworkPacket& NetworkPacket::operator<<(v3s16 src)
465 *this << (s16) src.X;
466 *this << (s16) src.Y;
467 *this << (s16) src.Z;
471 NetworkPacket& NetworkPacket::operator<<(v2s32 src)
473 *this << (s32) src.X;
474 *this << (s32) src.Y;
478 NetworkPacket& NetworkPacket::operator<<(v3s32 src)
480 *this << (s32) src.X;
481 *this << (s32) src.Y;
482 *this << (s32) src.Z;
486 NetworkPacket& NetworkPacket::operator>>(video::SColor& dst)
488 checkReadOffset(m_read_offset, 4);
490 dst = readARGB8(&m_data[m_read_offset]);
496 NetworkPacket& NetworkPacket::operator<<(video::SColor src)
500 writeU32(&m_data[m_read_offset], src.color);
506 Buffer<u8> NetworkPacket::oldForgePacket()
508 Buffer<u8> sb(m_datasize + 2);
509 writeU16(&sb[0], m_command);
511 u8* datas = getU8Ptr(0);
514 memcpy(&sb[2], datas, m_datasize);