diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/WifiAP.cpp | 77 | ||||
| -rw-r--r-- | src/libui_sdl/Platform.cpp | 4 |
2 files changed, 77 insertions, 4 deletions
diff --git a/src/WifiAP.cpp b/src/WifiAP.cpp index bebb0b5..1472425 100644 --- a/src/WifiAP.cpp +++ b/src/WifiAP.cpp @@ -21,6 +21,7 @@ #include "NDS.h" #include "Wifi.h" #include "WifiAP.h" +#include "Platform.h" namespace WifiAP @@ -71,6 +72,8 @@ u8 PacketBuffer[2048]; int PacketLen; int RXNum; +u8 LANBuffer[2048]; + // this is a lazy AP, we only keep track of one client // 0=disconnected 1=authenticated 2=associated int ClientStatus; @@ -106,6 +109,11 @@ bool MACEqual(u8* a, u8* b) return (*(u32*)&a[0] == *(u32*)&b[0]) && (*(u16*)&a[4] == *(u16*)&b[4]); } +bool MACIsBroadcast(u8* a) +{ + return (*(u32*)&a[0] == 0xFFFFFFFF) && (*(u16*)&a[4] == 0xFFFF); +} + void USTimer() { @@ -274,8 +282,34 @@ int SendPacket(u8* data, int len) return 0; case 2: // data - // TODO: forward to LAN - break; + { + if ((framectl & 0x0300) != 0x0100) + { + printf("wifiAP: got data frame with bad fromDS/toDS bits %04X\n", framectl); + return 0; + } + + // TODO: WFC patch?? + + if (*(u32*)&data[24] == 0x0003AAAA && *(u16*)&data[28] == 0x0000) + { + if (ClientStatus != 2) + { + printf("wifiAP: trying to send shit without being associated\n"); + return 0; + } + + int lan_len = (len - 30 - 4) + 14; + + memcpy(&LANBuffer[0], &data[16], 6); // destination MAC + memcpy(&LANBuffer[6], &data[10], 6); // source MAC + *(u16*)&LANBuffer[12] = *(u16*)&data[30]; // type + memcpy(&LANBuffer[14], &data[32], lan_len - 14); + + Platform::LAN_SendPacket(LANBuffer, lan_len); + } + } + return len; } return 0; @@ -337,6 +371,45 @@ int RecvPacket(u8* data) return len+12; } + if (ClientStatus < 2) return 0; + + int rxlen = Platform::LAN_RecvPacket(LANBuffer); + if (rxlen > 0) + { + // check destination MAC + if (!MACIsBroadcast(&LANBuffer[0])) + { + if (!MACEqual(&LANBuffer[0], Wifi::GetMAC())) + return 0; + } + + // packet is good + + u8* base = data + 12; + u8* p = base; + + PWRITE_16(p, 0x0208); + PWRITE_16(p, 0x0000); // duration?? + PWRITE_MAC2(p, (&LANBuffer[0])); // recv + PWRITE_MAC2(p, APMac); // BSSID + PWRITE_MAC2(p, (&LANBuffer[6])); // sender + PWRITE_SEQNO(p); + + PWRITE_32(p, 0x0003AAAA); + PWRITE_16(p, 0x0000); + PWRITE_16(p, *(u16*)&LANBuffer[12]); + memcpy(p, &LANBuffer[14], rxlen-14); p += rxlen-14; + + PALIGN_4(p, base); + PWRITE_32(p, 0xDEADBEEF); // checksum. doesn't matter for now + + int len = PLEN(p, base); + p = data; + PWRITE_TXH(p, len, 20); + + return len+12; + } + return 0; } diff --git a/src/libui_sdl/Platform.cpp b/src/libui_sdl/Platform.cpp index c5985de..f84f8f4 100644 --- a/src/libui_sdl/Platform.cpp +++ b/src/libui_sdl/Platform.cpp @@ -408,11 +408,11 @@ int LAN_SendPacket(u8* data, int len) void LAN_RXCallback(u_char* blarg, const struct pcap_pkthdr* header, const u_char* data) { + while (PCapRXNum > 0); + PCapPacketLen = header->len; memcpy(PCapPacketBuffer, data, PCapPacketLen); PCapRXNum = 1; - - printf("received shit\n"); } int LAN_RecvPacket(u8* data) |