From a67d2a194597770d3635ee06cb284580f15ec1eb Mon Sep 17 00:00:00 2001 From: Sijmen Schoon Date: Thu, 10 Dec 2020 18:20:35 +0100 Subject: [PATCH] send pings --- src/main.cpp | 323 +++++++++++++++++++++++++++++++++++++++++++++++++-- 1 file changed, 316 insertions(+), 7 deletions(-) diff --git a/src/main.cpp b/src/main.cpp index c8e32f4..312120b 100644 --- a/src/main.cpp +++ b/src/main.cpp @@ -16,6 +16,10 @@ // You should have received a copy of the GNU General Public License // along with Pi1541. If not, see . +#include +#include +#include + #include "defs.h" #include #include @@ -134,6 +138,289 @@ const char* termainalTextRed = "\E[31m"; const char* termainalTextNormal = "\E[0m"; +const uint32_t crc_tab32[256] = { + 0x00000000ul, 0x77073096ul, 0xEE0E612Cul, 0x990951BAul, + 0x076DC419ul, 0x706AF48Ful, 0xE963A535ul, 0x9E6495A3ul, + 0x0EDB8832ul, 0x79DCB8A4ul, 0xE0D5E91Eul, 0x97D2D988ul, + 0x09B64C2Bul, 0x7EB17CBDul, 0xE7B82D07ul, 0x90BF1D91ul, + 0x1DB71064ul, 0x6AB020F2ul, 0xF3B97148ul, 0x84BE41DEul, + 0x1ADAD47Dul, 0x6DDDE4EBul, 0xF4D4B551ul, 0x83D385C7ul, + 0x136C9856ul, 0x646BA8C0ul, 0xFD62F97Aul, 0x8A65C9ECul, + 0x14015C4Ful, 0x63066CD9ul, 0xFA0F3D63ul, 0x8D080DF5ul, + 0x3B6E20C8ul, 0x4C69105Eul, 0xD56041E4ul, 0xA2677172ul, + 0x3C03E4D1ul, 0x4B04D447ul, 0xD20D85FDul, 0xA50AB56Bul, + 0x35B5A8FAul, 0x42B2986Cul, 0xDBBBC9D6ul, 0xACBCF940ul, + 0x32D86CE3ul, 0x45DF5C75ul, 0xDCD60DCFul, 0xABD13D59ul, + 0x26D930ACul, 0x51DE003Aul, 0xC8D75180ul, 0xBFD06116ul, + 0x21B4F4B5ul, 0x56B3C423ul, 0xCFBA9599ul, 0xB8BDA50Ful, + 0x2802B89Eul, 0x5F058808ul, 0xC60CD9B2ul, 0xB10BE924ul, + 0x2F6F7C87ul, 0x58684C11ul, 0xC1611DABul, 0xB6662D3Dul, + 0x76DC4190ul, 0x01DB7106ul, 0x98D220BCul, 0xEFD5102Aul, + 0x71B18589ul, 0x06B6B51Ful, 0x9FBFE4A5ul, 0xE8B8D433ul, + 0x7807C9A2ul, 0x0F00F934ul, 0x9609A88Eul, 0xE10E9818ul, + 0x7F6A0DBBul, 0x086D3D2Dul, 0x91646C97ul, 0xE6635C01ul, + 0x6B6B51F4ul, 0x1C6C6162ul, 0x856530D8ul, 0xF262004Eul, + 0x6C0695EDul, 0x1B01A57Bul, 0x8208F4C1ul, 0xF50FC457ul, + 0x65B0D9C6ul, 0x12B7E950ul, 0x8BBEB8EAul, 0xFCB9887Cul, + 0x62DD1DDFul, 0x15DA2D49ul, 0x8CD37CF3ul, 0xFBD44C65ul, + 0x4DB26158ul, 0x3AB551CEul, 0xA3BC0074ul, 0xD4BB30E2ul, + 0x4ADFA541ul, 0x3DD895D7ul, 0xA4D1C46Dul, 0xD3D6F4FBul, + 0x4369E96Aul, 0x346ED9FCul, 0xAD678846ul, 0xDA60B8D0ul, + 0x44042D73ul, 0x33031DE5ul, 0xAA0A4C5Ful, 0xDD0D7CC9ul, + 0x5005713Cul, 0x270241AAul, 0xBE0B1010ul, 0xC90C2086ul, + 0x5768B525ul, 0x206F85B3ul, 0xB966D409ul, 0xCE61E49Ful, + 0x5EDEF90Eul, 0x29D9C998ul, 0xB0D09822ul, 0xC7D7A8B4ul, + 0x59B33D17ul, 0x2EB40D81ul, 0xB7BD5C3Bul, 0xC0BA6CADul, + 0xEDB88320ul, 0x9ABFB3B6ul, 0x03B6E20Cul, 0x74B1D29Aul, + 0xEAD54739ul, 0x9DD277AFul, 0x04DB2615ul, 0x73DC1683ul, + 0xE3630B12ul, 0x94643B84ul, 0x0D6D6A3Eul, 0x7A6A5AA8ul, + 0xE40ECF0Bul, 0x9309FF9Dul, 0x0A00AE27ul, 0x7D079EB1ul, + 0xF00F9344ul, 0x8708A3D2ul, 0x1E01F268ul, 0x6906C2FEul, + 0xF762575Dul, 0x806567CBul, 0x196C3671ul, 0x6E6B06E7ul, + 0xFED41B76ul, 0x89D32BE0ul, 0x10DA7A5Aul, 0x67DD4ACCul, + 0xF9B9DF6Ful, 0x8EBEEFF9ul, 0x17B7BE43ul, 0x60B08ED5ul, + 0xD6D6A3E8ul, 0xA1D1937Eul, 0x38D8C2C4ul, 0x4FDFF252ul, + 0xD1BB67F1ul, 0xA6BC5767ul, 0x3FB506DDul, 0x48B2364Bul, + 0xD80D2BDAul, 0xAF0A1B4Cul, 0x36034AF6ul, 0x41047A60ul, + 0xDF60EFC3ul, 0xA867DF55ul, 0x316E8EEFul, 0x4669BE79ul, + 0xCB61B38Cul, 0xBC66831Aul, 0x256FD2A0ul, 0x5268E236ul, + 0xCC0C7795ul, 0xBB0B4703ul, 0x220216B9ul, 0x5505262Ful, + 0xC5BA3BBEul, 0xB2BD0B28ul, 0x2BB45A92ul, 0x5CB36A04ul, + 0xC2D7FFA7ul, 0xB5D0CF31ul, 0x2CD99E8Bul, 0x5BDEAE1Dul, + 0x9B64C2B0ul, 0xEC63F226ul, 0x756AA39Cul, 0x026D930Aul, + 0x9C0906A9ul, 0xEB0E363Ful, 0x72076785ul, 0x05005713ul, + 0x95BF4A82ul, 0xE2B87A14ul, 0x7BB12BAEul, 0x0CB61B38ul, + 0x92D28E9Bul, 0xE5D5BE0Dul, 0x7CDCEFB7ul, 0x0BDBDF21ul, + 0x86D3D2D4ul, 0xF1D4E242ul, 0x68DDB3F8ul, 0x1FDA836Eul, + 0x81BE16CDul, 0xF6B9265Bul, 0x6FB077E1ul, 0x18B74777ul, + 0x88085AE6ul, 0xFF0F6A70ul, 0x66063BCAul, 0x11010B5Cul, + 0x8F659EFFul, 0xF862AE69ul, 0x616BFFD3ul, 0x166CCF45ul, + 0xA00AE278ul, 0xD70DD2EEul, 0x4E048354ul, 0x3903B3C2ul, + 0xA7672661ul, 0xD06016F7ul, 0x4969474Dul, 0x3E6E77DBul, + 0xAED16A4Aul, 0xD9D65ADCul, 0x40DF0B66ul, 0x37D83BF0ul, + 0xA9BCAE53ul, 0xDEBB9EC5ul, 0x47B2CF7Ful, 0x30B5FFE9ul, + 0xBDBDF21Cul, 0xCABAC28Aul, 0x53B39330ul, 0x24B4A3A6ul, + 0xBAD03605ul, 0xCDD70693ul, 0x54DE5729ul, 0x23D967BFul, + 0xB3667A2Eul, 0xC4614AB8ul, 0x5D681B02ul, 0x2A6F2B94ul, + 0xB40BBE37ul, 0xC30C8EA1ul, 0x5A05DF1Bul, 0x2D02EF8Dul +}; + + +uint32_t crc_32( const char *input_str, size_t num_bytes ) { + + uint32_t crc; + const char *ptr; + size_t a; + + crc = 0xFFFFFFFFul; + ptr = input_str; + + if ( ptr != NULL ) for (a=0; a> 8) ^ crc_tab32[ (crc ^ (uint32_t) *ptr++) & 0x000000FFul ]; + } + + return (crc ^ 0xFFFFFFFFul); + +} /* crc_32 */ + + +uint16_t InternetChecksum(const void* data, size_t size) +{ + uint32_t sum = 0; + while (size > 1) { + sum += *(uint16_t*)data; + data = (uint16_t*)data + 1; + + size -= 2; + } + + if (size > 0) { + sum += *(uint16_t*)data; + } + + while (sum >> 16) { + sum = (sum & 0xFFFF) + (sum >> 16); + } + + return ~sum; +} + + +template +struct IcmpPacket +{ + uint8_t type; + uint8_t code; + uint16_t checksum; + T payload; + + IcmpPacket(uint8_t type, uint8_t code, T payload) + : type(type), code(code), checksum(0), payload(payload) + {} + + size_t Serialize(char *buffer) { + size_t i = 0; + buffer[i++] = type; + buffer[i++] = code; + buffer[i++] = 0; + buffer[i++] = 0; + i += payload.Serialize(buffer + i); + + checksum = InternetChecksum(buffer, i); + buffer[2] = checksum; + buffer[3] = checksum >> 8; + + return i; + } +} __attribute__((packed)); + +template +struct Ipv4Packet +{ + unsigned int version : 4; + unsigned int ihl : 4; + unsigned int dscp : 6; + unsigned int ecn : 2; + uint16_t totalLength; + uint16_t identification; + unsigned int flags : 3; + unsigned int fragmentOffset : 13; + uint8_t ttl; + uint8_t protocol; + uint16_t headerChecksum; + uint32_t sourceIp; + uint32_t destinationIp; + T payload; + + Ipv4Packet( + uint8_t protocol, uint32_t sourceIp, uint32_t destinationIp, T payload + ) : + version(4), ihl(5), dscp(0), ecn(0), totalLength(sizeof(Ipv4Packet)), + identification(0), flags(0), fragmentOffset(0), ttl(64), + protocol(protocol), headerChecksum(0), sourceIp(sourceIp), + destinationIp(destinationIp), payload(payload) + {} + + size_t Serialize(char *buffer) + { + size_t i = 0; + buffer[i++] = version << 4 | ihl; + buffer[i++] = dscp << 2 | ecn; + buffer[i++] = totalLength >> 8; + buffer[i++] = totalLength; + buffer[i++] = identification >> 8; + buffer[i++] = identification; + buffer[i++] = (flags << 13 | fragmentOffset) >> 8; + buffer[i++] = flags << 13 | fragmentOffset; + buffer[i++] = ttl; + buffer[i++] = protocol; + buffer[i++] = 0; + buffer[i++] = 0; + buffer[i++] = sourceIp >> 24; + buffer[i++] = sourceIp >> 16; + buffer[i++] = sourceIp >> 8; + buffer[i++] = sourceIp; + buffer[i++] = destinationIp >> 24; + buffer[i++] = destinationIp >> 16; + buffer[i++] = destinationIp >> 8; + buffer[i++] = destinationIp; + i += payload.Serialize(buffer + i); + + headerChecksum = InternetChecksum(buffer, i); + buffer[10] = headerChecksum; + buffer[11] = headerChecksum >> 8; + + return i; + } +} __attribute__((packed)); + +template +struct IcmpEchoRequest +{ + uint16_t identifier; + uint16_t sequenceNumber; + T data; + + IcmpEchoRequest(T data) : identifier(0), sequenceNumber(0), data(data) + {} + + size_t Serialize(char *buffer) + { + size_t i = 0; + buffer[i++] = identifier >> 8; + buffer[i++] = identifier; + buffer[i++] = sequenceNumber >> 8; + buffer[i++] = sequenceNumber; + + memcpy(buffer + i, &data, sizeof(T)); + i += sizeof(T); + + return i; + } +} __attribute__((packed)); + + +struct UdpDatagramHeader +{ + uint16_t sourcePort; + uint16_t destinationPort; + uint16_t length; + uint16_t checksum; +}; + + +template +struct EthernetFrame +{ + uint8_t macDestination[6]; + uint8_t macSource[6]; + uint16_t type; + T payload; + uint32_t crc; + + EthernetFrame(uint16_t type, T payload) : + macDestination{255, 255, 255, 255, 255, 255}, + macSource{0, 0, 0, 0, 0, 0}, + type(type), + payload(payload), + crc(0) + {} + + size_t Serialize(char* buffer) + { + crc = 0; + + size_t i = 0; + memcpy(buffer + i, macDestination, sizeof(macDestination)); + i += sizeof(macDestination); + memcpy(buffer + i, macSource, sizeof(macSource)); + i += sizeof(macSource); + + buffer[i++] = type >> 8; + buffer[i++] = type; + + size_t payload_size = payload.Serialize(buffer + i); + i += payload_size; + + // Pad data to 46 bytes + for (; payload_size < 46; payload_size++) { + buffer[i++] = 0; + } + + crc = crc_32(buffer, i); + + buffer[i++] = crc; + buffer[i++] = crc >> 8; + buffer[i++] = crc >> 16; + buffer[i++] = crc >> 24; + + return i; + } +} __attribute__((packed)); + + + // Hooks required for USPi library extern "C" { @@ -1901,8 +2188,6 @@ extern "C" DisplayOptions(y_pos+=32); #endif - //if (!options.QuickBoot()) - //IEC_Bus::WaitMicroSeconds(3 * 1000000); InterruptSystemInitialize(); #if not defined(EXPERIMENTALZERO) @@ -1921,15 +2206,39 @@ extern "C" else DEBUG_LOG("Keyboard found\r\n"); - //if (!USPiMouseAvailable()) - // DEBUG_LOG("Mouse not found\r\n"); - //else - // DEBUG_LOG("Mouse found\r\n"); - keyboard = new Keyboard(); #endif inputMappings = new InputMappings(); //USPiMouseRegisterStatusHandler(MouseHandler); + + MsDelay(3000); + while (!USPiEthernetAvailable()) { + snprintf(tempBuffer, tempBufferSize, "Waiting for ethernet..."); + screen.PrintText(false, 0, y_pos+=16, tempBuffer, COLOUR_WHITE, COLOUR_BLACK); + MsDelay(1000); + } + + const auto ipAddress = 0x0A00000B; + char ipBuffer[USPI_FRAME_BUFFER_SIZE]; + if (USPiEthernetAvailable()) { + snprintf(tempBuffer, tempBufferSize, "Ethernet found"); + screen.PrintText(false, 0, y_pos+=16, tempBuffer, COLOUR_WHITE, COLOUR_BLACK); + + int value = 1337; + IcmpEchoRequest ping(value); + IcmpPacket icmp(8, 0, ping); + Ipv4Packet ip(1, ipAddress, 0x0A00000A, icmp); + + EthernetFrame frame(0x0800, ip); + USPiGetMACAddress(frame.macSource); + + size_t size = frame.Serialize(ipBuffer); + + while (true) { + USPiSendFrame(ipBuffer, size); + MsDelay(1000); + } + } CheckOptions();