diff options
Diffstat (limited to 'src/engine/shared/network_console_conn.cpp')
| -rw-r--r-- | src/engine/shared/network_console_conn.cpp | 186 |
1 files changed, 186 insertions, 0 deletions
diff --git a/src/engine/shared/network_console_conn.cpp b/src/engine/shared/network_console_conn.cpp new file mode 100644 index 00000000..75b581fa --- /dev/null +++ b/src/engine/shared/network_console_conn.cpp @@ -0,0 +1,186 @@ +/* (c) Magnus Auvinen. See licence.txt in the root of the distribution for more information. */ +/* If you are missing that file, acquire a complete release at teeworlds.com. */ +#include <base/system.h> +#include "network.h" + +void CConsoleNetConnection::Reset() +{ + m_State = NET_CONNSTATE_OFFLINE; + mem_zero(&m_PeerAddr, sizeof(m_PeerAddr)); + m_aErrorString[0] = 0; + + m_Socket.type = NETTYPE_INVALID; + m_Socket.ipv4sock = -1; + m_Socket.ipv6sock = -1; + m_aBuffer[0] = 0; + m_BufferOffset = 0; + + m_LineEndingDetected = false; + #if defined(CONF_FAMILY_WINDOWS) + m_aLineEnding[0] = '\r'; + m_aLineEnding[1] = '\n'; + m_aLineEnding[2] = 0; + #else + m_aLineEnding[0] = '\n'; + m_aLineEnding[1] = 0; + m_aLineEnding[2] = 0; + #endif +} + +void CConsoleNetConnection::Init(NETSOCKET Socket, const NETADDR *pAddr) +{ + Reset(); + + m_Socket = Socket; + net_set_non_blocking(m_Socket); + + m_PeerAddr = *pAddr; + m_State = NET_CONNSTATE_ONLINE; +} + +void CConsoleNetConnection::Disconnect(const char *pReason) +{ + if(State() == NET_CONNSTATE_OFFLINE) + return; + + if(pReason && pReason[0]) + Send(pReason); + + net_tcp_close(m_Socket); + + Reset(); +} + +int CConsoleNetConnection::Update() +{ + if(State() == NET_CONNSTATE_ONLINE) + { + if((int)(sizeof(m_aBuffer)) <= m_BufferOffset) + { + m_State = NET_CONNSTATE_ERROR; + str_copy(m_aErrorString, "too weak connection (out of buffer)", sizeof(m_aErrorString)); + return -1; + } + + int Bytes = net_tcp_recv(m_Socket, m_aBuffer+m_BufferOffset, (int)(sizeof(m_aBuffer))-m_BufferOffset); + + if(Bytes > 0) + { + m_BufferOffset += Bytes; + } + else if(Bytes < 0) + { + if(net_would_block()) // no data received + return 0; + + m_State = NET_CONNSTATE_ERROR; // error + str_copy(m_aErrorString, "connection failure", sizeof(m_aErrorString)); + return -1; + } + else + { + m_State = NET_CONNSTATE_ERROR; + str_copy(m_aErrorString, "remote end closed the connection", sizeof(m_aErrorString)); + return -1; + } + } + + return 0; +} + +int CConsoleNetConnection::Recv(char *pLine, int MaxLength) +{ + if(State() == NET_CONNSTATE_ONLINE) + { + if(m_BufferOffset) + { + // find message start + int StartOffset = 0; + while(m_aBuffer[StartOffset] == '\r' || m_aBuffer[StartOffset] == '\n') + { + // detect clients line ending format + if(!m_LineEndingDetected) + { + m_aLineEnding[0] = m_aBuffer[StartOffset]; + if(StartOffset+1 < m_BufferOffset && (m_aBuffer[StartOffset+1] == '\r' || m_aBuffer[StartOffset+1] == '\n') && + m_aBuffer[StartOffset] != m_aBuffer[StartOffset+1]) + m_aLineEnding[1] = m_aBuffer[StartOffset+1]; + m_LineEndingDetected = true; + } + + if(++StartOffset >= m_BufferOffset) + { + m_BufferOffset = 0; + return 0; + } + } + + // find message end + int EndOffset = StartOffset; + while(m_aBuffer[EndOffset] != '\r' && m_aBuffer[EndOffset] != '\n') + { + if(++EndOffset >= m_BufferOffset) + { + if(StartOffset > 0) + { + mem_move(m_aBuffer, m_aBuffer+StartOffset, m_BufferOffset-StartOffset); + m_BufferOffset -= StartOffset; + } + return 0; + } + } + + // extract message and update buffer + if(MaxLength-1 < EndOffset-StartOffset) + { + if(StartOffset > 0) + { + mem_move(m_aBuffer, m_aBuffer+StartOffset, m_BufferOffset-StartOffset); + m_BufferOffset -= StartOffset; + } + return 0; + } + mem_copy(pLine, m_aBuffer+StartOffset, EndOffset-StartOffset); + pLine[EndOffset-StartOffset] = 0; + str_sanitize_cc(pLine); + mem_move(m_aBuffer, m_aBuffer+EndOffset, m_BufferOffset-EndOffset); + m_BufferOffset -= EndOffset; + return 1; + } + } + return 0; +} + +int CConsoleNetConnection::Send(const char *pLine) +{ + if(State() != NET_CONNSTATE_ONLINE) + return -1; + + char aBuf[1024]; + str_copy(aBuf, pLine, (int)(sizeof(aBuf))-2); + int Length = str_length(aBuf); + aBuf[Length] = m_aLineEnding[0]; + aBuf[Length+1] = m_aLineEnding[1]; + aBuf[Length+2] = m_aLineEnding[2]; + Length += 3; + const char *pData = aBuf; + + while(true) + { + int Send = net_tcp_send(m_Socket, pData, Length); + if(Send < 0) + { + m_State = NET_CONNSTATE_ERROR; + str_copy(m_aErrorString, "failed to send packet", sizeof(m_aErrorString)); + return -1; + } + + if(Send >= Length) + break; + + pData += Send; + Length -= Send; + } + + return 0; +} |