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 * sizeof(char) >= m_datasize) {
76 m_datasize += len * sizeof(char);
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 * sizeof(char);
102 NetworkPacket& NetworkPacket::operator<<(std::string src)
104 u16 msgsize = src.size();
105 if (msgsize > 0xFFFF) {
111 if (m_read_offset + msgsize * sizeof(char) >= m_datasize) {
112 m_datasize += msgsize * sizeof(char);
113 m_data.resize(m_datasize);
116 memcpy(&m_data[m_read_offset], src.c_str(), msgsize);
117 m_read_offset += msgsize;
122 void NetworkPacket::putLongString(std::string src)
124 u32 msgsize = src.size();
125 if (msgsize > 0xFFFFFFFF) {
126 msgsize = 0xFFFFFFFF;
131 if (m_read_offset + msgsize * sizeof(char) >= m_datasize) {
132 m_datasize += msgsize * sizeof(char);
133 m_data.resize(m_datasize);
136 memcpy(&m_data[m_read_offset], src.c_str(), msgsize);
137 m_read_offset += msgsize;
140 NetworkPacket& NetworkPacket::operator>>(std::wstring& dst)
142 u16 strLen = readU16(&m_data[m_read_offset]);
143 m_read_offset += sizeof(u16);
152 for(u16 i=0; i<strLen; i++) {
153 wchar_t c16 = readU16(&m_data[m_read_offset]);
155 m_read_offset += sizeof(u16);
161 NetworkPacket& NetworkPacket::operator<<(std::wstring src)
163 u16 msgsize = src.size();
164 if (msgsize > 0xFFFF) {
171 for (u16 i=0; i<msgsize; i++) {
172 *this << (u16) src[i];
178 std::string NetworkPacket::readLongString()
180 u32 strLen = readU32(&m_data[m_read_offset]);
181 m_read_offset += sizeof(u32);
190 dst.append((char*)&m_data[m_read_offset], strLen);
192 m_read_offset += strLen*sizeof(char);
197 NetworkPacket& NetworkPacket::operator>>(char& dst)
199 checkReadOffset(m_read_offset);
201 dst = readU8(&m_data[m_read_offset]);
207 char NetworkPacket::getChar(u32 offset)
209 checkReadOffset(offset);
211 return readU8(&m_data[offset]);
214 NetworkPacket& NetworkPacket::operator<<(char src)
218 writeU8(&m_data[m_read_offset], src);
224 NetworkPacket& NetworkPacket::operator<<(u8 src)
228 writeU8(&m_data[m_read_offset], src);
234 NetworkPacket& NetworkPacket::operator<<(bool src)
238 writeU8(&m_data[m_read_offset], src);
244 NetworkPacket& NetworkPacket::operator<<(u16 src)
246 checkDataSize<u16>();
248 writeU16(&m_data[m_read_offset], src);
254 NetworkPacket& NetworkPacket::operator<<(u32 src)
256 checkDataSize<u32>();
258 writeU32(&m_data[m_read_offset], src);
264 NetworkPacket& NetworkPacket::operator<<(u64 src)
266 checkDataSize<u64>();
268 writeU64(&m_data[m_read_offset], src);
274 NetworkPacket& NetworkPacket::operator<<(float src)
276 checkDataSize<float>();
278 writeF1000(&m_data[m_read_offset], src);
284 NetworkPacket& NetworkPacket::operator>>(bool& dst)
286 checkReadOffset(m_read_offset);
288 dst = readU8(&m_data[m_read_offset]);
294 NetworkPacket& NetworkPacket::operator>>(u8& dst)
296 checkReadOffset(m_read_offset);
298 dst = readU8(&m_data[m_read_offset]);
304 u8 NetworkPacket::getU8(u32 offset)
306 checkReadOffset(offset);
308 return readU8(&m_data[offset]);
311 u8* NetworkPacket::getU8Ptr(u32 from_offset)
313 if (m_datasize == 0) {
317 checkReadOffset(from_offset);
319 return (u8*)&m_data[from_offset];
322 NetworkPacket& NetworkPacket::operator>>(u16& dst)
324 checkReadOffset(m_read_offset);
326 dst = readU16(&m_data[m_read_offset]);
332 u16 NetworkPacket::getU16(u32 from_offset)
334 checkReadOffset(from_offset);
336 return readU16(&m_data[from_offset]);
339 NetworkPacket& NetworkPacket::operator>>(u32& dst)
341 checkReadOffset(m_read_offset);
343 dst = readU32(&m_data[m_read_offset]);
349 NetworkPacket& NetworkPacket::operator>>(u64& dst)
351 checkReadOffset(m_read_offset);
353 dst = readU64(&m_data[m_read_offset]);
359 NetworkPacket& NetworkPacket::operator>>(float& dst)
361 checkReadOffset(m_read_offset);
363 dst = readF1000(&m_data[m_read_offset]);
369 NetworkPacket& NetworkPacket::operator>>(v2f& dst)
371 checkReadOffset(m_read_offset);
373 dst = readV2F1000(&m_data[m_read_offset]);
379 NetworkPacket& NetworkPacket::operator>>(v3f& dst)
381 checkReadOffset(m_read_offset);
383 dst = readV3F1000(&m_data[m_read_offset]);
389 NetworkPacket& NetworkPacket::operator>>(s16& dst)
391 checkReadOffset(m_read_offset);
393 dst = readS16(&m_data[m_read_offset]);
399 NetworkPacket& NetworkPacket::operator<<(s16 src)
405 NetworkPacket& NetworkPacket::operator>>(s32& dst)
407 checkReadOffset(m_read_offset);
409 dst = readS32(&m_data[m_read_offset]);
415 NetworkPacket& NetworkPacket::operator<<(s32 src)
421 NetworkPacket& NetworkPacket::operator>>(v3s16& dst)
423 checkReadOffset(m_read_offset);
425 dst = readV3S16(&m_data[m_read_offset]);
431 NetworkPacket& NetworkPacket::operator>>(v2s32& dst)
433 dst = readV2S32(&m_data[m_read_offset]);
439 NetworkPacket& NetworkPacket::operator>>(v3s32& dst)
441 checkReadOffset(m_read_offset);
443 dst = readV3S32(&m_data[m_read_offset]);
449 NetworkPacket& NetworkPacket::operator<<(v2f src)
451 *this << (float) src.X;
452 *this << (float) src.Y;
456 NetworkPacket& NetworkPacket::operator<<(v3f src)
458 *this << (float) src.X;
459 *this << (float) src.Y;
460 *this << (float) src.Z;
464 NetworkPacket& NetworkPacket::operator<<(v3s16 src)
466 *this << (s16) src.X;
467 *this << (s16) src.Y;
468 *this << (s16) src.Z;
472 NetworkPacket& NetworkPacket::operator<<(v2s32 src)
474 *this << (s32) src.X;
475 *this << (s32) src.Y;
479 NetworkPacket& NetworkPacket::operator<<(v3s32 src)
481 *this << (s32) src.X;
482 *this << (s32) src.Y;
483 *this << (s32) src.Z;
487 NetworkPacket& NetworkPacket::operator>>(video::SColor& dst)
489 checkReadOffset(m_read_offset);
491 dst = readARGB8(&m_data[m_read_offset]);
497 NetworkPacket& NetworkPacket::operator<<(video::SColor src)
499 checkDataSize<u32>();
501 writeU32(&m_data[m_read_offset], src.color);
507 Buffer<u8> NetworkPacket::oldForgePacket()
509 Buffer<u8> sb(m_datasize + 2);
510 writeU16(&sb[0], m_command);
512 u8* datas = getU8Ptr(0);
515 memcpy(&sb[2], datas, m_datasize);