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)
44 if (from_offset >= 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);
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 u16 strLen = readU16(&m_data[m_read_offset]);
87 m_read_offset += sizeof(u16);
96 dst.append((char*)&m_data[m_read_offset], strLen);
98 m_read_offset += strLen;
102 NetworkPacket& NetworkPacket::operator<<(std::string src)
104 u16 msgsize = src.size();
105 if (msgsize > 0xFFFF) {
111 putRawString(src.c_str(), (u32)msgsize);
116 void NetworkPacket::putLongString(std::string src)
118 u32 msgsize = src.size();
119 if (msgsize > 0xFFFFFFFF) {
120 msgsize = 0xFFFFFFFF;
125 putRawString(src.c_str(), msgsize);
128 NetworkPacket& NetworkPacket::operator>>(std::wstring& dst)
130 u16 strLen = readU16(&m_data[m_read_offset]);
131 m_read_offset += sizeof(u16);
140 for(u16 i=0; i<strLen; i++) {
141 wchar_t c16 = readU16(&m_data[m_read_offset]);
143 m_read_offset += sizeof(u16);
149 NetworkPacket& NetworkPacket::operator<<(std::wstring src)
151 u16 msgsize = src.size();
152 if (msgsize > 0xFFFF) {
159 for (u16 i=0; i<msgsize; i++) {
160 *this << (u16) src[i];
166 std::string NetworkPacket::readLongString()
168 u32 strLen = readU32(&m_data[m_read_offset]);
169 m_read_offset += sizeof(u32);
178 dst.append((char*)&m_data[m_read_offset], strLen);
180 m_read_offset += strLen;
185 NetworkPacket& NetworkPacket::operator>>(char& dst)
187 checkReadOffset(m_read_offset);
189 dst = readU8(&m_data[m_read_offset]);
195 char NetworkPacket::getChar(u32 offset)
197 checkReadOffset(offset);
199 return readU8(&m_data[offset]);
202 NetworkPacket& NetworkPacket::operator<<(char src)
206 writeU8(&m_data[m_read_offset], src);
212 NetworkPacket& NetworkPacket::operator<<(u8 src)
216 writeU8(&m_data[m_read_offset], src);
222 NetworkPacket& NetworkPacket::operator<<(bool src)
226 writeU8(&m_data[m_read_offset], src);
232 NetworkPacket& NetworkPacket::operator<<(u16 src)
234 checkDataSize<u16>();
236 writeU16(&m_data[m_read_offset], src);
242 NetworkPacket& NetworkPacket::operator<<(u32 src)
244 checkDataSize<u32>();
246 writeU32(&m_data[m_read_offset], src);
252 NetworkPacket& NetworkPacket::operator<<(u64 src)
254 checkDataSize<u64>();
256 writeU64(&m_data[m_read_offset], src);
262 NetworkPacket& NetworkPacket::operator<<(float src)
264 checkDataSize<float>();
266 writeF1000(&m_data[m_read_offset], src);
272 NetworkPacket& NetworkPacket::operator>>(bool& dst)
274 checkReadOffset(m_read_offset);
276 dst = readU8(&m_data[m_read_offset]);
282 NetworkPacket& NetworkPacket::operator>>(u8& dst)
284 checkReadOffset(m_read_offset);
286 dst = readU8(&m_data[m_read_offset]);
292 u8 NetworkPacket::getU8(u32 offset)
294 checkReadOffset(offset);
296 return readU8(&m_data[offset]);
299 u8* NetworkPacket::getU8Ptr(u32 from_offset)
301 if (m_datasize == 0) {
305 checkReadOffset(from_offset);
307 return (u8*)&m_data[from_offset];
310 NetworkPacket& NetworkPacket::operator>>(u16& dst)
312 checkReadOffset(m_read_offset);
314 dst = readU16(&m_data[m_read_offset]);
320 u16 NetworkPacket::getU16(u32 from_offset)
322 checkReadOffset(from_offset);
324 return readU16(&m_data[from_offset]);
327 NetworkPacket& NetworkPacket::operator>>(u32& dst)
329 checkReadOffset(m_read_offset);
331 dst = readU32(&m_data[m_read_offset]);
337 NetworkPacket& NetworkPacket::operator>>(u64& dst)
339 checkReadOffset(m_read_offset);
341 dst = readU64(&m_data[m_read_offset]);
347 NetworkPacket& NetworkPacket::operator>>(float& dst)
349 checkReadOffset(m_read_offset);
351 dst = readF1000(&m_data[m_read_offset]);
357 NetworkPacket& NetworkPacket::operator>>(v2f& dst)
359 checkReadOffset(m_read_offset);
361 dst = readV2F1000(&m_data[m_read_offset]);
367 NetworkPacket& NetworkPacket::operator>>(v3f& dst)
369 checkReadOffset(m_read_offset);
371 dst = readV3F1000(&m_data[m_read_offset]);
377 NetworkPacket& NetworkPacket::operator>>(s16& dst)
379 checkReadOffset(m_read_offset);
381 dst = readS16(&m_data[m_read_offset]);
387 NetworkPacket& NetworkPacket::operator<<(s16 src)
393 NetworkPacket& NetworkPacket::operator>>(s32& dst)
395 checkReadOffset(m_read_offset);
397 dst = readS32(&m_data[m_read_offset]);
403 NetworkPacket& NetworkPacket::operator<<(s32 src)
409 NetworkPacket& NetworkPacket::operator>>(v3s16& dst)
411 checkReadOffset(m_read_offset);
413 dst = readV3S16(&m_data[m_read_offset]);
419 NetworkPacket& NetworkPacket::operator>>(v2s32& dst)
421 dst = readV2S32(&m_data[m_read_offset]);
427 NetworkPacket& NetworkPacket::operator>>(v3s32& dst)
429 checkReadOffset(m_read_offset);
431 dst = readV3S32(&m_data[m_read_offset]);
437 NetworkPacket& NetworkPacket::operator<<(v2f src)
439 *this << (float) src.X;
440 *this << (float) src.Y;
444 NetworkPacket& NetworkPacket::operator<<(v3f src)
446 *this << (float) src.X;
447 *this << (float) src.Y;
448 *this << (float) src.Z;
452 NetworkPacket& NetworkPacket::operator<<(v3s16 src)
454 *this << (s16) src.X;
455 *this << (s16) src.Y;
456 *this << (s16) src.Z;
460 NetworkPacket& NetworkPacket::operator<<(v2s32 src)
462 *this << (s32) src.X;
463 *this << (s32) src.Y;
467 NetworkPacket& NetworkPacket::operator<<(v3s32 src)
469 *this << (s32) src.X;
470 *this << (s32) src.Y;
471 *this << (s32) src.Z;
475 NetworkPacket& NetworkPacket::operator>>(video::SColor& dst)
477 checkReadOffset(m_read_offset);
479 dst = readARGB8(&m_data[m_read_offset]);
485 NetworkPacket& NetworkPacket::operator<<(video::SColor src)
487 checkDataSize<u32>();
489 writeU32(&m_data[m_read_offset], src.color);
495 Buffer<u8> NetworkPacket::oldForgePacket()
497 Buffer<u8> sb(m_datasize + 2);
498 writeU16(&sb[0], m_command);
500 u8* datas = getU8Ptr(0);
503 memcpy(&sb[2], datas, m_datasize);