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 "networkexceptions.h"
23 #include "util/serialize.h"
24 #include "networkprotocol.h"
26 NetworkPacket::NetworkPacket(u16 command, u32 datasize, session_t peer_id):
27 m_datasize(datasize), m_command(command), m_peer_id(peer_id)
29 m_data.resize(m_datasize);
32 NetworkPacket::NetworkPacket(u16 command, u32 datasize):
33 m_datasize(datasize), m_command(command)
35 m_data.resize(m_datasize);
38 NetworkPacket::~NetworkPacket()
43 void NetworkPacket::checkReadOffset(u32 from_offset, u32 field_size)
45 if (from_offset + field_size > m_datasize) {
47 ss << "Reading outside packet (offset: " <<
48 from_offset << ", packet size: " << getSize() << ")";
49 throw PacketError(ss.str());
53 void NetworkPacket::putRawPacket(u8 *data, u32 datasize, session_t peer_id)
55 // If a m_command is already set, we are rewriting on same packet
56 // This is not permitted
57 assert(m_command == 0);
59 m_datasize = datasize - 2;
62 m_data.resize(m_datasize);
64 // split command and datas
65 m_command = readU16(&data[0]);
66 memcpy(m_data.data(), &data[2], m_datasize);
69 void NetworkPacket::clear()
78 const char* NetworkPacket::getString(u32 from_offset)
80 checkReadOffset(from_offset, 0);
82 return (char*)&m_data[from_offset];
85 void NetworkPacket::putRawString(const char* src, u32 len)
87 if (m_read_offset + len > m_datasize) {
88 m_datasize = m_read_offset + len;
89 m_data.resize(m_datasize);
95 memcpy(&m_data[m_read_offset], src, len);
99 NetworkPacket& NetworkPacket::operator>>(std::string& dst)
101 checkReadOffset(m_read_offset, 2);
102 u16 strLen = readU16(&m_data[m_read_offset]);
111 checkReadOffset(m_read_offset, strLen);
114 dst.append((char*)&m_data[m_read_offset], strLen);
116 m_read_offset += strLen;
120 NetworkPacket& NetworkPacket::operator<<(const std::string &src)
122 if (src.size() > STRING_MAX_LEN) {
123 throw PacketError("String too long");
126 u16 msgsize = src.size();
130 putRawString(src.c_str(), (u32)msgsize);
135 void NetworkPacket::putLongString(const std::string &src)
137 if (src.size() > LONG_STRING_MAX_LEN) {
138 throw PacketError("String too long");
141 u32 msgsize = src.size();
145 putRawString(src.c_str(), msgsize);
148 NetworkPacket& NetworkPacket::operator>>(std::wstring& dst)
150 checkReadOffset(m_read_offset, 2);
151 u16 strLen = readU16(&m_data[m_read_offset]);
160 checkReadOffset(m_read_offset, strLen * 2);
163 for(u16 i=0; i<strLen; i++) {
164 wchar_t c16 = readU16(&m_data[m_read_offset]);
166 m_read_offset += sizeof(u16);
172 NetworkPacket& NetworkPacket::operator<<(const std::wstring &src)
174 if (src.size() > WIDE_STRING_MAX_LEN) {
175 throw PacketError("String too long");
178 u16 msgsize = src.size();
183 for (u16 i=0; i<msgsize; i++) {
184 *this << (u16) src[i];
190 std::string NetworkPacket::readLongString()
192 checkReadOffset(m_read_offset, 4);
193 u32 strLen = readU32(&m_data[m_read_offset]);
200 if (strLen > LONG_STRING_MAX_LEN) {
201 throw PacketError("String too long");
204 checkReadOffset(m_read_offset, strLen);
209 dst.append((char*)&m_data[m_read_offset], strLen);
211 m_read_offset += strLen;
216 NetworkPacket& NetworkPacket::operator>>(char& dst)
218 checkReadOffset(m_read_offset, 1);
220 dst = readU8(&m_data[m_read_offset]);
226 char NetworkPacket::getChar(u32 offset)
228 checkReadOffset(offset, 1);
230 return readU8(&m_data[offset]);
233 NetworkPacket& NetworkPacket::operator<<(char src)
237 writeU8(&m_data[m_read_offset], src);
243 NetworkPacket& NetworkPacket::operator<<(u8 src)
247 writeU8(&m_data[m_read_offset], src);
253 NetworkPacket& NetworkPacket::operator<<(bool src)
257 writeU8(&m_data[m_read_offset], src);
263 NetworkPacket& NetworkPacket::operator<<(u16 src)
267 writeU16(&m_data[m_read_offset], src);
273 NetworkPacket& NetworkPacket::operator<<(u32 src)
277 writeU32(&m_data[m_read_offset], src);
283 NetworkPacket& NetworkPacket::operator<<(u64 src)
287 writeU64(&m_data[m_read_offset], src);
293 NetworkPacket& NetworkPacket::operator<<(float src)
297 writeF32(&m_data[m_read_offset], src);
303 NetworkPacket& NetworkPacket::operator>>(bool& dst)
305 checkReadOffset(m_read_offset, 1);
307 dst = readU8(&m_data[m_read_offset]);
313 NetworkPacket& NetworkPacket::operator>>(u8& dst)
315 checkReadOffset(m_read_offset, 1);
317 dst = readU8(&m_data[m_read_offset]);
323 u8 NetworkPacket::getU8(u32 offset)
325 checkReadOffset(offset, 1);
327 return readU8(&m_data[offset]);
330 u8* NetworkPacket::getU8Ptr(u32 from_offset)
332 if (m_datasize == 0) {
336 checkReadOffset(from_offset, 1);
338 return (u8*)&m_data[from_offset];
341 NetworkPacket& NetworkPacket::operator>>(u16& dst)
343 checkReadOffset(m_read_offset, 2);
345 dst = readU16(&m_data[m_read_offset]);
351 u16 NetworkPacket::getU16(u32 from_offset)
353 checkReadOffset(from_offset, 2);
355 return readU16(&m_data[from_offset]);
358 NetworkPacket& NetworkPacket::operator>>(u32& dst)
360 checkReadOffset(m_read_offset, 4);
362 dst = readU32(&m_data[m_read_offset]);
368 NetworkPacket& NetworkPacket::operator>>(u64& dst)
370 checkReadOffset(m_read_offset, 8);
372 dst = readU64(&m_data[m_read_offset]);
378 NetworkPacket& NetworkPacket::operator>>(float& dst)
380 checkReadOffset(m_read_offset, 4);
382 dst = readF32(&m_data[m_read_offset]);
388 NetworkPacket& NetworkPacket::operator>>(v2f& dst)
390 checkReadOffset(m_read_offset, 8);
392 dst = readV2F32(&m_data[m_read_offset]);
398 NetworkPacket& NetworkPacket::operator>>(v3f& dst)
400 checkReadOffset(m_read_offset, 12);
402 dst = readV3F32(&m_data[m_read_offset]);
408 NetworkPacket& NetworkPacket::operator>>(s16& dst)
410 checkReadOffset(m_read_offset, 2);
412 dst = readS16(&m_data[m_read_offset]);
418 NetworkPacket& NetworkPacket::operator<<(s16 src)
424 NetworkPacket& NetworkPacket::operator>>(s32& dst)
426 checkReadOffset(m_read_offset, 4);
428 dst = readS32(&m_data[m_read_offset]);
434 NetworkPacket& NetworkPacket::operator<<(s32 src)
440 NetworkPacket& NetworkPacket::operator>>(v3s16& dst)
442 checkReadOffset(m_read_offset, 6);
444 dst = readV3S16(&m_data[m_read_offset]);
450 NetworkPacket& NetworkPacket::operator>>(v2s32& dst)
452 checkReadOffset(m_read_offset, 8);
454 dst = readV2S32(&m_data[m_read_offset]);
460 NetworkPacket& NetworkPacket::operator>>(v3s32& dst)
462 checkReadOffset(m_read_offset, 12);
464 dst = readV3S32(&m_data[m_read_offset]);
470 NetworkPacket& NetworkPacket::operator<<(v2f src)
472 *this << (float) src.X;
473 *this << (float) src.Y;
477 NetworkPacket& NetworkPacket::operator<<(v3f src)
479 *this << (float) src.X;
480 *this << (float) src.Y;
481 *this << (float) src.Z;
485 NetworkPacket& NetworkPacket::operator<<(v3s16 src)
487 *this << (s16) src.X;
488 *this << (s16) src.Y;
489 *this << (s16) src.Z;
493 NetworkPacket& NetworkPacket::operator<<(v2s32 src)
495 *this << (s32) src.X;
496 *this << (s32) src.Y;
500 NetworkPacket& NetworkPacket::operator<<(v3s32 src)
502 *this << (s32) src.X;
503 *this << (s32) src.Y;
504 *this << (s32) src.Z;
508 NetworkPacket& NetworkPacket::operator>>(video::SColor& dst)
510 checkReadOffset(m_read_offset, 4);
512 dst = readARGB8(&m_data[m_read_offset]);
518 NetworkPacket& NetworkPacket::operator<<(video::SColor src)
522 writeU32(&m_data[m_read_offset], src.color);
528 SharedBuffer<u8> NetworkPacket::oldForgePacket()
530 SharedBuffer<u8> sb(m_datasize + 2);
531 writeU16(&sb[0], m_command);
533 u8* datas = getU8Ptr(0);
536 memcpy(&sb[2], datas, m_datasize);