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_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_command(command)
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 const 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);
83 memcpy(&m_data[m_read_offset], src, len);
87 NetworkPacket& NetworkPacket::operator>>(std::string& dst)
89 checkReadOffset(m_read_offset, 2);
90 u16 strLen = readU16(&m_data[m_read_offset]);
99 checkReadOffset(m_read_offset, strLen);
102 dst.append((char*)&m_data[m_read_offset], strLen);
104 m_read_offset += strLen;
108 NetworkPacket& NetworkPacket::operator<<(const std::string &src)
110 u16 msgsize = src.size();
111 if (msgsize > STRING_MAX_LEN) {
112 throw PacketError("String too long");
117 putRawString(src.c_str(), (u32)msgsize);
122 void NetworkPacket::putLongString(const std::string &src)
124 u32 msgsize = src.size();
125 if (msgsize > LONG_STRING_MAX_LEN) {
126 throw PacketError("String too long");
131 putRawString(src.c_str(), msgsize);
134 NetworkPacket& NetworkPacket::operator>>(std::wstring& dst)
136 checkReadOffset(m_read_offset, 2);
137 u16 strLen = readU16(&m_data[m_read_offset]);
146 checkReadOffset(m_read_offset, strLen * 2);
149 for(u16 i=0; i<strLen; i++) {
150 wchar_t c16 = readU16(&m_data[m_read_offset]);
152 m_read_offset += sizeof(u16);
158 NetworkPacket& NetworkPacket::operator<<(const std::wstring &src)
160 u16 msgsize = src.size();
161 if (msgsize > WIDE_STRING_MAX_LEN) {
162 throw PacketError("String too long");
168 for (u16 i=0; i<msgsize; i++) {
169 *this << (u16) src[i];
175 std::string NetworkPacket::readLongString()
177 checkReadOffset(m_read_offset, 4);
178 u32 strLen = readU32(&m_data[m_read_offset]);
185 if (strLen > LONG_STRING_MAX_LEN) {
186 throw PacketError("String too long");
189 checkReadOffset(m_read_offset, strLen);
194 dst.append((char*)&m_data[m_read_offset], strLen);
196 m_read_offset += strLen;
201 NetworkPacket& NetworkPacket::operator>>(char& dst)
203 checkReadOffset(m_read_offset, 1);
205 dst = readU8(&m_data[m_read_offset]);
211 char NetworkPacket::getChar(u32 offset)
213 checkReadOffset(offset, 1);
215 return readU8(&m_data[offset]);
218 NetworkPacket& NetworkPacket::operator<<(char src)
222 writeU8(&m_data[m_read_offset], src);
228 NetworkPacket& NetworkPacket::operator<<(u8 src)
232 writeU8(&m_data[m_read_offset], src);
238 NetworkPacket& NetworkPacket::operator<<(bool src)
242 writeU8(&m_data[m_read_offset], src);
248 NetworkPacket& NetworkPacket::operator<<(u16 src)
252 writeU16(&m_data[m_read_offset], src);
258 NetworkPacket& NetworkPacket::operator<<(u32 src)
262 writeU32(&m_data[m_read_offset], src);
268 NetworkPacket& NetworkPacket::operator<<(u64 src)
272 writeU64(&m_data[m_read_offset], src);
278 NetworkPacket& NetworkPacket::operator<<(std::time_t src)
284 NetworkPacket& NetworkPacket::operator<<(float src)
288 writeF1000(&m_data[m_read_offset], src);
294 NetworkPacket& NetworkPacket::operator>>(bool& dst)
296 checkReadOffset(m_read_offset, 1);
298 dst = readU8(&m_data[m_read_offset]);
304 NetworkPacket& NetworkPacket::operator>>(u8& dst)
306 checkReadOffset(m_read_offset, 1);
308 dst = readU8(&m_data[m_read_offset]);
314 u8 NetworkPacket::getU8(u32 offset)
316 checkReadOffset(offset, 1);
318 return readU8(&m_data[offset]);
321 u8* NetworkPacket::getU8Ptr(u32 from_offset)
323 if (m_datasize == 0) {
327 checkReadOffset(from_offset, 1);
329 return (u8*)&m_data[from_offset];
332 NetworkPacket& NetworkPacket::operator>>(u16& dst)
334 checkReadOffset(m_read_offset, 2);
336 dst = readU16(&m_data[m_read_offset]);
342 u16 NetworkPacket::getU16(u32 from_offset)
344 checkReadOffset(from_offset, 2);
346 return readU16(&m_data[from_offset]);
349 NetworkPacket& NetworkPacket::operator>>(u32& dst)
351 checkReadOffset(m_read_offset, 4);
353 dst = readU32(&m_data[m_read_offset]);
359 NetworkPacket& NetworkPacket::operator>>(u64& dst)
361 checkReadOffset(m_read_offset, 8);
363 dst = readU64(&m_data[m_read_offset]);
369 NetworkPacket& NetworkPacket::operator>>(std::time_t& dst)
371 checkReadOffset(m_read_offset, 8);
373 dst = readU64(&m_data[m_read_offset]);
379 NetworkPacket& NetworkPacket::operator>>(float& dst)
381 checkReadOffset(m_read_offset, 4);
383 dst = readF1000(&m_data[m_read_offset]);
389 NetworkPacket& NetworkPacket::operator>>(v2f& dst)
391 checkReadOffset(m_read_offset, 8);
393 dst = readV2F1000(&m_data[m_read_offset]);
399 NetworkPacket& NetworkPacket::operator>>(v3f& dst)
401 checkReadOffset(m_read_offset, 12);
403 dst = readV3F1000(&m_data[m_read_offset]);
409 NetworkPacket& NetworkPacket::operator>>(s16& dst)
411 checkReadOffset(m_read_offset, 2);
413 dst = readS16(&m_data[m_read_offset]);
419 NetworkPacket& NetworkPacket::operator<<(s16 src)
425 NetworkPacket& NetworkPacket::operator>>(s32& dst)
427 checkReadOffset(m_read_offset, 4);
429 dst = readS32(&m_data[m_read_offset]);
435 NetworkPacket& NetworkPacket::operator<<(s32 src)
441 NetworkPacket& NetworkPacket::operator>>(v3s16& dst)
443 checkReadOffset(m_read_offset, 6);
445 dst = readV3S16(&m_data[m_read_offset]);
451 NetworkPacket& NetworkPacket::operator>>(v2s32& dst)
453 checkReadOffset(m_read_offset, 8);
455 dst = readV2S32(&m_data[m_read_offset]);
461 NetworkPacket& NetworkPacket::operator>>(v3s32& dst)
463 checkReadOffset(m_read_offset, 12);
465 dst = readV3S32(&m_data[m_read_offset]);
471 NetworkPacket& NetworkPacket::operator<<(v2f src)
473 *this << (float) src.X;
474 *this << (float) src.Y;
478 NetworkPacket& NetworkPacket::operator<<(v3f src)
480 *this << (float) src.X;
481 *this << (float) src.Y;
482 *this << (float) src.Z;
486 NetworkPacket& NetworkPacket::operator<<(v3s16 src)
488 *this << (s16) src.X;
489 *this << (s16) src.Y;
490 *this << (s16) src.Z;
494 NetworkPacket& NetworkPacket::operator<<(v2s32 src)
496 *this << (s32) src.X;
497 *this << (s32) src.Y;
501 NetworkPacket& NetworkPacket::operator<<(v3s32 src)
503 *this << (s32) src.X;
504 *this << (s32) src.Y;
505 *this << (s32) src.Z;
509 NetworkPacket& NetworkPacket::operator>>(video::SColor& dst)
511 checkReadOffset(m_read_offset, 4);
513 dst = readARGB8(&m_data[m_read_offset]);
519 NetworkPacket& NetworkPacket::operator<<(video::SColor src)
523 writeU32(&m_data[m_read_offset], src.color);
529 Buffer<u8> NetworkPacket::oldForgePacket()
531 Buffer<u8> sb(m_datasize + 2);
532 writeU16(&sb[0], m_command);
534 u8* datas = getU8Ptr(0);
537 memcpy(&sb[2], datas, m_datasize);