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::putRawPacket(u8 *data, u32 datasize, u16 peer_id)
44 // If a m_command is already set, we are rewriting on same packet
45 // This is not permitted
46 assert(m_command == 0);
48 m_datasize = datasize - 2;
51 // split command and datas
52 m_command = readU16(&data[0]);
53 m_data = std::vector<u8>(&data[2], &data[2 + m_datasize]);
56 char* NetworkPacket::getString(u32 from_offset)
58 if (from_offset >= m_datasize)
59 throw SerializationError("Malformed packet read");
61 return (char*)&m_data[from_offset];
64 void NetworkPacket::putRawString(const char* src, u32 len)
66 if (m_read_offset + len * sizeof(char) >= m_datasize) {
67 m_datasize += len * sizeof(char);
68 m_data.resize(m_datasize);
71 memcpy(&m_data[m_read_offset], src, len);
75 NetworkPacket& NetworkPacket::operator>>(std::string& dst)
77 u16 strLen = readU16(&m_data[m_read_offset]);
78 m_read_offset += sizeof(u16);
87 dst.append((char*)&m_data[m_read_offset], strLen);
89 m_read_offset += strLen * sizeof(char);
93 NetworkPacket& NetworkPacket::operator<<(std::string src)
95 u16 msgsize = src.size();
96 if (msgsize > 0xFFFF) {
102 if (m_read_offset + msgsize * sizeof(char) >= m_datasize) {
103 m_datasize += msgsize * sizeof(char);
104 m_data.resize(m_datasize);
107 memcpy(&m_data[m_read_offset], src.c_str(), msgsize);
108 m_read_offset += msgsize;
113 void NetworkPacket::putLongString(std::string src)
115 u32 msgsize = src.size();
116 if (msgsize > 0xFFFFFFFF) {
117 msgsize = 0xFFFFFFFF;
122 if (m_read_offset + msgsize * sizeof(char) >= m_datasize) {
123 m_datasize += msgsize * sizeof(char);
124 m_data.resize(m_datasize);
127 memcpy(&m_data[m_read_offset], src.c_str(), msgsize);
128 m_read_offset += msgsize;
131 NetworkPacket& NetworkPacket::operator>>(std::wstring& dst)
133 u16 strLen = readU16(&m_data[m_read_offset]);
134 m_read_offset += sizeof(u16);
143 for(u16 i=0; i<strLen; i++) {
144 wchar_t c16 = readU16(&m_data[m_read_offset]);
146 m_read_offset += sizeof(u16);
152 NetworkPacket& NetworkPacket::operator<<(std::wstring src)
154 u16 msgsize = src.size();
155 if (msgsize > 0xFFFF) {
162 for (u16 i=0; i<msgsize; i++) {
163 *this << (u16) src[i];
169 std::string NetworkPacket::readLongString()
171 u32 strLen = readU32(&m_data[m_read_offset]);
172 m_read_offset += sizeof(u32);
181 dst.append((char*)&m_data[m_read_offset], strLen);
183 m_read_offset += strLen*sizeof(char);
188 NetworkPacket& NetworkPacket::operator>>(char& dst)
190 if (m_read_offset >= m_datasize)
191 throw SerializationError("Malformed packet read");
193 dst = readU8(&m_data[m_read_offset]);
199 char NetworkPacket::getChar(u32 offset)
201 if (offset >= m_datasize)
202 throw SerializationError("Malformed packet read");
204 return readU8(&m_data[offset]);
207 NetworkPacket& NetworkPacket::operator<<(char src)
211 writeU8(&m_data[m_read_offset], src);
217 NetworkPacket& NetworkPacket::operator<<(u8 src)
221 writeU8(&m_data[m_read_offset], src);
227 NetworkPacket& NetworkPacket::operator<<(bool src)
231 writeU8(&m_data[m_read_offset], src);
237 NetworkPacket& NetworkPacket::operator<<(u16 src)
239 checkDataSize<u16>();
241 writeU16(&m_data[m_read_offset], src);
247 NetworkPacket& NetworkPacket::operator<<(u32 src)
249 checkDataSize<u32>();
251 writeU32(&m_data[m_read_offset], src);
257 NetworkPacket& NetworkPacket::operator<<(u64 src)
259 checkDataSize<u64>();
261 writeU64(&m_data[m_read_offset], src);
267 NetworkPacket& NetworkPacket::operator<<(float src)
269 checkDataSize<float>();
271 writeF1000(&m_data[m_read_offset], src);
277 NetworkPacket& NetworkPacket::operator>>(bool& dst)
279 if (m_read_offset >= m_datasize)
280 throw SerializationError("Malformed packet read");
282 dst = readU8(&m_data[m_read_offset]);
288 NetworkPacket& NetworkPacket::operator>>(u8& dst)
290 if (m_read_offset >= m_datasize)
291 throw SerializationError("Malformed packet read");
293 dst = readU8(&m_data[m_read_offset]);
299 u8 NetworkPacket::getU8(u32 offset)
301 if (offset >= m_datasize)
302 throw SerializationError("Malformed packet read");
304 return readU8(&m_data[offset]);
307 u8* NetworkPacket::getU8Ptr(u32 from_offset)
309 if (m_datasize == 0) {
313 if (from_offset >= m_datasize)
314 throw SerializationError("Malformed packet read");
316 return (u8*)&m_data[from_offset];
319 NetworkPacket& NetworkPacket::operator>>(u16& dst)
321 if (m_read_offset >= m_datasize)
322 throw SerializationError("Malformed packet read");
324 dst = readU16(&m_data[m_read_offset]);
330 u16 NetworkPacket::getU16(u32 from_offset)
332 if (from_offset >= m_datasize)
333 throw SerializationError("Malformed packet read");
335 return readU16(&m_data[from_offset]);
338 NetworkPacket& NetworkPacket::operator>>(u32& dst)
340 if (m_read_offset >= m_datasize)
341 throw SerializationError("Malformed packet read");
343 dst = readU32(&m_data[m_read_offset]);
349 NetworkPacket& NetworkPacket::operator>>(u64& dst)
351 if (m_read_offset >= m_datasize)
352 throw SerializationError("Malformed packet read");
354 dst = readU64(&m_data[m_read_offset]);
360 NetworkPacket& NetworkPacket::operator>>(float& dst)
362 if (m_read_offset >= m_datasize)
363 throw SerializationError("Malformed packet read");
365 dst = readF1000(&m_data[m_read_offset]);
371 NetworkPacket& NetworkPacket::operator>>(v2f& dst)
373 if (m_read_offset >= m_datasize)
374 throw SerializationError("Malformed packet read");
376 dst = readV2F1000(&m_data[m_read_offset]);
382 NetworkPacket& NetworkPacket::operator>>(v3f& dst)
384 if (m_read_offset >= m_datasize)
385 throw SerializationError("Malformed packet read");
387 dst = readV3F1000(&m_data[m_read_offset]);
393 NetworkPacket& NetworkPacket::operator>>(s16& dst)
395 if (m_read_offset >= m_datasize)
396 throw SerializationError("Malformed packet read");
398 dst = readS16(&m_data[m_read_offset]);
404 NetworkPacket& NetworkPacket::operator<<(s16 src)
410 NetworkPacket& NetworkPacket::operator>>(s32& dst)
412 if (m_read_offset >= m_datasize)
413 throw SerializationError("Malformed packet read");
415 dst = readS32(&m_data[m_read_offset]);
421 NetworkPacket& NetworkPacket::operator<<(s32 src)
427 NetworkPacket& NetworkPacket::operator>>(v3s16& dst)
429 if (m_read_offset >= m_datasize)
430 throw SerializationError("Malformed packet read");
432 dst = readV3S16(&m_data[m_read_offset]);
438 NetworkPacket& NetworkPacket::operator>>(v2s32& dst)
440 dst = readV2S32(&m_data[m_read_offset]);
446 NetworkPacket& NetworkPacket::operator>>(v3s32& dst)
448 if (m_read_offset >= m_datasize)
449 throw SerializationError("Malformed packet read");
451 dst = readV3S32(&m_data[m_read_offset]);
457 NetworkPacket& NetworkPacket::operator<<(v2f src)
459 *this << (float) src.X;
460 *this << (float) src.Y;
464 NetworkPacket& NetworkPacket::operator<<(v3f src)
466 *this << (float) src.X;
467 *this << (float) src.Y;
468 *this << (float) src.Z;
472 NetworkPacket& NetworkPacket::operator<<(v3s16 src)
474 *this << (s16) src.X;
475 *this << (s16) src.Y;
476 *this << (s16) src.Z;
480 NetworkPacket& NetworkPacket::operator<<(v2s32 src)
482 *this << (s32) src.X;
483 *this << (s32) src.Y;
487 NetworkPacket& NetworkPacket::operator<<(v3s32 src)
489 *this << (s32) src.X;
490 *this << (s32) src.Y;
491 *this << (s32) src.Z;
495 NetworkPacket& NetworkPacket::operator>>(video::SColor& dst)
497 if (m_read_offset >= m_datasize)
498 throw SerializationError("Malformed packet read");
500 dst = readARGB8(&m_data[m_read_offset]);
506 NetworkPacket& NetworkPacket::operator<<(video::SColor src)
508 checkDataSize<u32>();
510 writeU32(&m_data[m_read_offset], src.color);
516 Buffer<u8> NetworkPacket::oldForgePacket()
518 Buffer<u8> sb(m_datasize + 2);
519 writeU16(&sb[0], m_command);
521 u8* datas = getU8Ptr(0);
524 memcpy(&sb[2], datas, m_datasize);