piwalker/melonDS
1
0
Fork 0
mirror of https://github.com/melonDS-emu/melonDS.git synced 2025-07-27 00:00:07 -06:00
Code Issues Packages Projects Releases Wiki Activity

move platform specific config to platform specif ffile ayyyyyyyyyyygfghj;,gnxbf

Browse Source
This commit is contained in:
Arisotura
2019-03-15 00:58:29 +01:00
parent 5edf40f665
commit 4de4631c15
14 changed files with 291 additions and 183 deletions
Download Patch File Download Diff File Expand all files Collapse all files

66
src/libui_sdl/LAN_Socket.cpp
View File

@ -621,6 +621,8 @@ void TCP_SYNACK(TCPSocket* sock, u8* data, int len)
seqnum++;
sock->AckNum = seqnum;
printf("SYNACK SEQ=%08X|%08X\n", sock->SeqNum, sock->AckNum);
// ethernet
memcpy(out, &data[6], 6); out += 6;
memcpy(out, kServerMAC, 6); out += 6;
@ -674,16 +676,18 @@ void TCP_SYNACK(TCPSocket* sock, u8* data, int len)
RXNum = 1;
}
void TCP_ACK(TCPSocket* sock, u8* data, int len)
void TCP_ACK(TCPSocket* sock, bool fin)
{
u8 resp[64];
u8* out = &resp[0];
u8* ipheader = &data[0xE];
u8* tcpheader = &data[0x22];
u16 flags = 0x5010;
if (fin) flags |= 0x0001;
printf("%sACK SEQ=%08X|%08X\n", fin?"FIN":" ", sock->SeqNum, sock->AckNum);
// ethernet
memcpy(out, &data[6], 6); out += 6;
memcpy(out, Wifi::GetMAC(), 6); out += 6;
memcpy(out, kServerMAC, 6); out += 6;
*(u16*)out = htons(0x0800); out += 2;
@ -698,16 +702,16 @@ void TCP_ACK(TCPSocket* sock, u8* data, int len)
*out++ = 0x80; // TTL
*out++ = 0x06; // protocol (TCP)
*(u16*)out = 0; out += 2; // checksum
*(u32*)out = *(u32*)&ipheader[16]; out += 4; // source IP
*(u32*)out = *(u32*)&ipheader[12]; out += 4; // destination IP
*(u32*)out = *(u32*)&sock->DestIP; out += 4; // source IP
*(u32*)out = htonl(kClientIP); out += 4; // destination IP
// TCP
u8* resp_tcpheader = out;
*(u16*)out = *(u16*)&tcpheader[2]; out += 2; // source port
*(u16*)out = *(u16*)&tcpheader[0]; out += 2; // destination port
*(u16*)out = htonl(sock->DestPort); out += 2; // source port
*(u16*)out = htonl(sock->SourcePort); out += 2; // destination port
*(u32*)out = htonl(sock->SeqNum); out += 4; // seq number
*(u32*)out = htonl(sock->AckNum); out += 4; // ack seq number
*(u16*)out = htons(0x5010); out += 2; // flags (ACK)
*(u16*)out = htons(flags); out += 2; // flags
*(u16*)out = htons(0x7000); out += 2; // window size (uuuh)
*(u16*)out = 0; out += 2; // checksum
*(u16*)out = 0; out += 2; // urgent pointer
@ -731,7 +735,7 @@ void TCP_BuildIncomingFrame(TCPSocket* sock, u8* data, int len)
u8* out = &resp[0];
if (len > 1536) return;
printf("INCOMING SEQ=%08X|%08X\n", sock->SeqNum, sock->AckNum);
// ethernet
memcpy(out, Wifi::GetMAC(), 6); out += 6; // hurf
memcpy(out, kServerMAC, 6); out += 6;
@ -774,6 +778,8 @@ void TCP_BuildIncomingFrame(TCPSocket* sock, u8* data, int len)
PacketLen = framelen;
memcpy(PacketBuffer, resp, PacketLen);
RXNum = 1;
sock->SeqNum += len;
}
void HandleTCPFrame(u8* data, int len)
@ -789,6 +795,11 @@ void HandleTCPFrame(u8* data, int len)
u32 tcplen = ntohs(*(u16*)&ipheader[2]) - 0x14;
u32 tcpdatalen = tcplen - tcpheaderlen;
printf("tcpflags=%04X header=%d data=%d seq=%08X|%08X\n",
flags, tcpheaderlen, tcpdatalen,
ntohl(*(u32*)&tcpheader[4]),
ntohl(*(u32*)&tcpheader[8]));
if (flags & 0x002) // SYN
{
int sockid = -1;
@ -796,7 +807,7 @@ void HandleTCPFrame(u8* data, int len)
for (int i = 0; i < (sizeof(TCPSocketList)/sizeof(TCPSocket)); i++)
{
sock = &TCPSocketList[i];
if (sock->Status == 1 && !memcmp(&sock->DestIP, &ipheader[16], 4) &&
if (sock->Status != 0 && !memcmp(&sock->DestIP, &ipheader[16], 4) &&
sock->SourcePort == srcport && sock->DestPort == dstport)
{
printf("LANMAGIC: duplicate TCP socket\n");
@ -846,7 +857,6 @@ void HandleTCPFrame(u8* data, int len)
struct sockaddr_in conn_addr;
memset(&conn_addr, 0, sizeof(conn_addr));
conn_addr.sin_family = AF_INET;
//conn_addr.sin_addr.S_un.S_addr = *(u32*)&ipheader[16];
memcpy(&conn_addr.sin_addr, &ipheader[16], 4);
conn_addr.sin_port = htons(dstport);
if (connect(sock->Backend, (sockaddr*)&conn_addr, sizeof(conn_addr)) == SOCKET_ERROR)
@ -866,7 +876,7 @@ void HandleTCPFrame(u8* data, int len)
for (int i = 0; i < (sizeof(TCPSocketList)/sizeof(TCPSocket)); i++)
{
sock = &TCPSocketList[i];
if (sock->Status == 1 && !memcmp(&sock->DestIP, &ipheader[16], 4) &&
if (sock->Status != 0 && !memcmp(&sock->DestIP, &ipheader[16], 4) &&
sock->SourcePort == srcport && sock->DestPort == dstport)
{
sockid = i;
@ -895,7 +905,7 @@ void HandleTCPFrame(u8* data, int len)
send(sock->Backend, (char*)tcpdata, tcpdatalen, 0);
// kind of a hack, there
TCP_ACK(sock, data, len);
TCP_ACK(sock, false);
}
if (flags & 0x001) // FIN
@ -1052,10 +1062,35 @@ int RecvPacket(u8* data)
u8 recvbuf[1024];
int recvlen = recv(sock->Backend, (char*)recvbuf, 1024, 0);
if (recvlen < 1) continue;
if (recvlen < 1)
{
if (recvlen == 0)
{
// socket has closed from the other side
printf("TCP: socket %d closed from other side\n", i);
sock->Status = 2;
TCP_ACK(sock, true);
}
continue;
}
printf("TCP: socket %d receiving %d bytes\n", i, recvlen);
TCP_BuildIncomingFrame(sock, recvbuf, recvlen);
// debug
for (int j = 0; j < recvlen; j += 16)
{
int rem = recvlen - j;
if (rem > 16) rem = 16;
for (int k = 0; k < rem; k++)
{
printf("%02X ", recvbuf[k+j]);
}
printf("\n");
}
//recvlen = recv(sock->Backend, (char*)recvbuf, 1024, 0);
//if (recvlen == 0) printf("it closed immediately after\n");
}
for (int i = 0; i < (sizeof(UDPSocketList)/sizeof(UDPSocket)); i++)
@ -1077,7 +1112,6 @@ int RecvPacket(u8* data)
}
u8 recvbuf[1024];
//int recvlen = recv(sock->Backend, (char*)recvbuf, 1024, 0);
sockaddr_t fromAddr;
socklen_t fromLen = sizeof(sockaddr_t);
int recvlen = recvfrom(sock->Backend, (char*)recvbuf, 1024, 0, &fromAddr, &fromLen);