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 const char* NetworkPacket::getString(u32 from_offset)
71 checkReadOffset(from_offset, 0);
73 return (char*)&m_data[from_offset];
76 void NetworkPacket::putRawString(const char* src, u32 len)
78 if (m_read_offset + len > m_datasize) {
79 m_datasize = m_read_offset + len;
80 m_data.resize(m_datasize);
86 memcpy(&m_data[m_read_offset], src, len);
90 NetworkPacket& NetworkPacket::operator>>(std::string& dst)
92 checkReadOffset(m_read_offset, 2);
93 u16 strLen = readU16(&m_data[m_read_offset]);
102 checkReadOffset(m_read_offset, strLen);
105 dst.append((char*)&m_data[m_read_offset], strLen);
107 m_read_offset += strLen;
111 NetworkPacket& NetworkPacket::operator<<(const std::string &src)
113 if (src.size() > STRING_MAX_LEN) {
114 throw PacketError("String too long");
117 u16 msgsize = src.size();
121 putRawString(src.c_str(), (u32)msgsize);
126 void NetworkPacket::putLongString(const std::string &src)
128 if (src.size() > LONG_STRING_MAX_LEN) {
129 throw PacketError("String too long");
132 u32 msgsize = src.size();
136 putRawString(src.c_str(), msgsize);
139 NetworkPacket& NetworkPacket::operator>>(std::wstring& dst)
141 checkReadOffset(m_read_offset, 2);
142 u16 strLen = readU16(&m_data[m_read_offset]);
151 checkReadOffset(m_read_offset, strLen * 2);
154 for(u16 i=0; i<strLen; i++) {
155 wchar_t c16 = readU16(&m_data[m_read_offset]);
157 m_read_offset += sizeof(u16);
163 NetworkPacket& NetworkPacket::operator<<(const std::wstring &src)
165 if (src.size() > WIDE_STRING_MAX_LEN) {
166 throw PacketError("String too long");
169 u16 msgsize = src.size();
174 for (u16 i=0; i<msgsize; i++) {
175 *this << (u16) src[i];
181 std::string NetworkPacket::readLongString()
183 checkReadOffset(m_read_offset, 4);
184 u32 strLen = readU32(&m_data[m_read_offset]);
191 if (strLen > LONG_STRING_MAX_LEN) {
192 throw PacketError("String too long");
195 checkReadOffset(m_read_offset, strLen);
200 dst.append((char*)&m_data[m_read_offset], strLen);
202 m_read_offset += strLen;
207 NetworkPacket& NetworkPacket::operator>>(char& dst)
209 checkReadOffset(m_read_offset, 1);
211 dst = readU8(&m_data[m_read_offset]);
217 char NetworkPacket::getChar(u32 offset)
219 checkReadOffset(offset, 1);
221 return readU8(&m_data[offset]);
224 NetworkPacket& NetworkPacket::operator<<(char src)
228 writeU8(&m_data[m_read_offset], src);
234 NetworkPacket& NetworkPacket::operator<<(u8 src)
238 writeU8(&m_data[m_read_offset], src);
244 NetworkPacket& NetworkPacket::operator<<(bool src)
248 writeU8(&m_data[m_read_offset], src);
254 NetworkPacket& NetworkPacket::operator<<(u16 src)
258 writeU16(&m_data[m_read_offset], src);
264 NetworkPacket& NetworkPacket::operator<<(u32 src)
268 writeU32(&m_data[m_read_offset], src);
274 NetworkPacket& NetworkPacket::operator<<(u64 src)
278 writeU64(&m_data[m_read_offset], src);
284 NetworkPacket& NetworkPacket::operator<<(float src)
288 writeF32(&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>>(float& dst)
371 checkReadOffset(m_read_offset, 4);
373 dst = readF32(&m_data[m_read_offset]);
379 NetworkPacket& NetworkPacket::operator>>(v2f& dst)
381 checkReadOffset(m_read_offset, 8);
383 dst = readV2F32(&m_data[m_read_offset]);
389 NetworkPacket& NetworkPacket::operator>>(v3f& dst)
391 checkReadOffset(m_read_offset, 12);
393 dst = readV3F32(&m_data[m_read_offset]);
399 NetworkPacket& NetworkPacket::operator>>(s16& dst)
401 checkReadOffset(m_read_offset, 2);
403 dst = readS16(&m_data[m_read_offset]);
409 NetworkPacket& NetworkPacket::operator<<(s16 src)
415 NetworkPacket& NetworkPacket::operator>>(s32& dst)
417 checkReadOffset(m_read_offset, 4);
419 dst = readS32(&m_data[m_read_offset]);
425 NetworkPacket& NetworkPacket::operator<<(s32 src)
431 NetworkPacket& NetworkPacket::operator>>(v3s16& dst)
433 checkReadOffset(m_read_offset, 6);
435 dst = readV3S16(&m_data[m_read_offset]);
441 NetworkPacket& NetworkPacket::operator>>(v2s32& dst)
443 checkReadOffset(m_read_offset, 8);
445 dst = readV2S32(&m_data[m_read_offset]);
451 NetworkPacket& NetworkPacket::operator>>(v3s32& dst)
453 checkReadOffset(m_read_offset, 12);
455 dst = readV3S32(&m_data[m_read_offset]);
461 NetworkPacket& NetworkPacket::operator<<(v2f src)
463 *this << (float) src.X;
464 *this << (float) src.Y;
468 NetworkPacket& NetworkPacket::operator<<(v3f src)
470 *this << (float) src.X;
471 *this << (float) src.Y;
472 *this << (float) src.Z;
476 NetworkPacket& NetworkPacket::operator<<(v3s16 src)
478 *this << (s16) src.X;
479 *this << (s16) src.Y;
480 *this << (s16) src.Z;
484 NetworkPacket& NetworkPacket::operator<<(v2s32 src)
486 *this << (s32) src.X;
487 *this << (s32) src.Y;
491 NetworkPacket& NetworkPacket::operator<<(v3s32 src)
493 *this << (s32) src.X;
494 *this << (s32) src.Y;
495 *this << (s32) src.Z;
499 NetworkPacket& NetworkPacket::operator>>(video::SColor& dst)
501 checkReadOffset(m_read_offset, 4);
503 dst = readARGB8(&m_data[m_read_offset]);
509 NetworkPacket& NetworkPacket::operator<<(video::SColor src)
513 writeU32(&m_data[m_read_offset], src.color);
519 SharedBuffer<u8> NetworkPacket::oldForgePacket()
521 SharedBuffer<u8> sb(m_datasize + 2);
522 writeU16(&sb[0], m_command);
524 u8* datas = getU8Ptr(0);
527 memcpy(&sb[2], datas, m_datasize);