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]);
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 > STRING_MAX_LEN) {
109 throw PacketError("String too long");
114 putRawString(src.c_str(), (u32)msgsize);
119 void NetworkPacket::putLongString(std::string src)
121 u32 msgsize = src.size();
122 if (msgsize > LONG_STRING_MAX_LEN) {
123 throw PacketError("String too long");
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 > WIDE_STRING_MAX_LEN) {
159 throw PacketError("String too long");
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 if (strLen > LONG_STRING_MAX_LEN) {
183 throw PacketError("String too long");
186 checkReadOffset(m_read_offset, strLen);
191 dst.append((char*)&m_data[m_read_offset], strLen);
193 m_read_offset += strLen;
198 NetworkPacket& NetworkPacket::operator>>(char& dst)
200 checkReadOffset(m_read_offset, 1);
202 dst = readU8(&m_data[m_read_offset]);
208 char NetworkPacket::getChar(u32 offset)
210 checkReadOffset(offset, 1);
212 return readU8(&m_data[offset]);
215 NetworkPacket& NetworkPacket::operator<<(char src)
219 writeU8(&m_data[m_read_offset], src);
225 NetworkPacket& NetworkPacket::operator<<(u8 src)
229 writeU8(&m_data[m_read_offset], src);
235 NetworkPacket& NetworkPacket::operator<<(bool src)
239 writeU8(&m_data[m_read_offset], src);
245 NetworkPacket& NetworkPacket::operator<<(u16 src)
249 writeU16(&m_data[m_read_offset], src);
255 NetworkPacket& NetworkPacket::operator<<(u32 src)
259 writeU32(&m_data[m_read_offset], src);
265 NetworkPacket& NetworkPacket::operator<<(u64 src)
269 writeU64(&m_data[m_read_offset], src);
275 NetworkPacket& NetworkPacket::operator<<(float src)
279 writeF1000(&m_data[m_read_offset], src);
285 NetworkPacket& NetworkPacket::operator>>(bool& dst)
287 checkReadOffset(m_read_offset, 1);
289 dst = readU8(&m_data[m_read_offset]);
295 NetworkPacket& NetworkPacket::operator>>(u8& dst)
297 checkReadOffset(m_read_offset, 1);
299 dst = readU8(&m_data[m_read_offset]);
305 u8 NetworkPacket::getU8(u32 offset)
307 checkReadOffset(offset, 1);
309 return readU8(&m_data[offset]);
312 u8* NetworkPacket::getU8Ptr(u32 from_offset)
314 if (m_datasize == 0) {
318 checkReadOffset(from_offset, 1);
320 return (u8*)&m_data[from_offset];
323 NetworkPacket& NetworkPacket::operator>>(u16& dst)
325 checkReadOffset(m_read_offset, 2);
327 dst = readU16(&m_data[m_read_offset]);
333 u16 NetworkPacket::getU16(u32 from_offset)
335 checkReadOffset(from_offset, 2);
337 return readU16(&m_data[from_offset]);
340 NetworkPacket& NetworkPacket::operator>>(u32& dst)
342 checkReadOffset(m_read_offset, 4);
344 dst = readU32(&m_data[m_read_offset]);
350 NetworkPacket& NetworkPacket::operator>>(u64& dst)
352 checkReadOffset(m_read_offset, 8);
354 dst = readU64(&m_data[m_read_offset]);
360 NetworkPacket& NetworkPacket::operator>>(float& dst)
362 checkReadOffset(m_read_offset, 4);
364 dst = readF1000(&m_data[m_read_offset]);
370 NetworkPacket& NetworkPacket::operator>>(v2f& dst)
372 checkReadOffset(m_read_offset, 8);
374 dst = readV2F1000(&m_data[m_read_offset]);
380 NetworkPacket& NetworkPacket::operator>>(v3f& dst)
382 checkReadOffset(m_read_offset, 12);
384 dst = readV3F1000(&m_data[m_read_offset]);
390 NetworkPacket& NetworkPacket::operator>>(s16& dst)
392 checkReadOffset(m_read_offset, 2);
394 dst = readS16(&m_data[m_read_offset]);
400 NetworkPacket& NetworkPacket::operator<<(s16 src)
406 NetworkPacket& NetworkPacket::operator>>(s32& dst)
408 checkReadOffset(m_read_offset, 4);
410 dst = readS32(&m_data[m_read_offset]);
416 NetworkPacket& NetworkPacket::operator<<(s32 src)
422 NetworkPacket& NetworkPacket::operator>>(v3s16& dst)
424 checkReadOffset(m_read_offset, 6);
426 dst = readV3S16(&m_data[m_read_offset]);
432 NetworkPacket& NetworkPacket::operator>>(v2s32& dst)
434 checkReadOffset(m_read_offset, 8);
436 dst = readV2S32(&m_data[m_read_offset]);
442 NetworkPacket& NetworkPacket::operator>>(v3s32& dst)
444 checkReadOffset(m_read_offset, 12);
446 dst = readV3S32(&m_data[m_read_offset]);
452 NetworkPacket& NetworkPacket::operator<<(v2f src)
454 *this << (float) src.X;
455 *this << (float) src.Y;
459 NetworkPacket& NetworkPacket::operator<<(v3f src)
461 *this << (float) src.X;
462 *this << (float) src.Y;
463 *this << (float) src.Z;
467 NetworkPacket& NetworkPacket::operator<<(v3s16 src)
469 *this << (s16) src.X;
470 *this << (s16) src.Y;
471 *this << (s16) src.Z;
475 NetworkPacket& NetworkPacket::operator<<(v2s32 src)
477 *this << (s32) src.X;
478 *this << (s32) src.Y;
482 NetworkPacket& NetworkPacket::operator<<(v3s32 src)
484 *this << (s32) src.X;
485 *this << (s32) src.Y;
486 *this << (s32) src.Z;
490 NetworkPacket& NetworkPacket::operator>>(video::SColor& dst)
492 checkReadOffset(m_read_offset, 4);
494 dst = readARGB8(&m_data[m_read_offset]);
500 NetworkPacket& NetworkPacket::operator<<(video::SColor src)
504 writeU32(&m_data[m_read_offset], src.color);
510 Buffer<u8> NetworkPacket::oldForgePacket()
512 Buffer<u8> sb(m_datasize + 2);
513 writeU16(&sb[0], m_command);
515 u8* datas = getU8Ptr(0);
518 memcpy(&sb[2], datas, m_datasize);