65 lines
3.8 KiB
C++
65 lines
3.8 KiB
C++
#include <sys/socket.h>
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#include <netinet/in.h>
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#include <arpa/inet.h>
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#include <stdio.h>
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#include "udp4.h"
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#include "ip4.h"
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#include "dhcp4.h"
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void dump_hex(void const * src, int length)
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{
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uint8_t const * u8 = reinterpret_cast<uint8_t const *>(src);
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for (int i = 0; i < length; i++) {
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printf("%02x ", u8[i]);
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if (i % 16 == 15)
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printf("\n");
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}
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printf("\n");
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}
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int main()
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{
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int udp_header = 8 + 339;
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unsigned char payload[] = {0x2, 0x1, 0x6, 0x0, 0x12, 0x27, 0x67, 0xa8, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0xc0, 0xa8, 0x1, 0xf0, 0xc0, 0xa8, 0x1, 0x1, 0x0, 0x0, 0x0, 0x0, 0xf4, 0x7b, 0x9, 0x99, 0x3e, 0x28, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x63, 0x82, 0x53, 0x63, 0x35, 0x1, 0x5, 0x36, 0x4, 0xc0, 0xa8, 0x1, 0x1, 0x33, 0x4, 0x0, 0x1, 0x51, 0x80, 0x3a, 0x4, 0x0, 0x0, 0xa8, 0xc0, 0x3b, 0x4, 0x0, 0x1, 0x27, 0x50, 0x1c, 0x4, 0xc0, 0xa8, 0x1, 0xff, 0x3, 0x4, 0xc0, 0xa8, 0x1, 0x1, 0xf, 0x3, 0x6c, 0x61, 0x6e, 0x1, 0x4, 0xff, 0xff, 0xff, 0x0, 0x6, 0x4, 0xc0, 0xa8, 0x1, 0x1, 0x7d, 0x28, 0x0, 0x0, 0xd, 0xe9, 0x23, 0x6, 0x8, 0x47, 0x52, 0x42, 0x45, 0x33, 0x33, 0x31, 0x43, 0x5, 0xf, 0x52, 0x30, 0x31, 0x43, 0x31, 0x4d, 0x32, 0x35, 0x34, 0x36, 0x30, 0x30, 0x32, 0x48, 0x45, 0x4, 0x6, 0x30, 0x30, 0x30, 0x46, 0x42, 0x33, 0xff};
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uint8_t buf[16384];
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struct in_addr srcA;
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struct in_addr dstA;
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inet_aton("192.168.1.1", &srcA);
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inet_aton("192.168.1.240", &dstA);
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int ip4_payload_length = (sizeof (payload)) + (sizeof (udp4::header));
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int ip4_identification = 55179;
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int offset = 0;
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ip4::header * ip4_header = ip4::make_header(reinterpret_cast<void *>(&buf[offset]),
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ip4_payload_length,
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ip4_identification,
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srcA.s_addr,
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dstA.s_addr);
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offset += (sizeof (ip4::header));
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dump_hex(ip4_header, (sizeof (ip4::header)));
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udp4::header * udp4_header = udp4::make_header(reinterpret_cast<void *>(&buf[offset]),
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htons(67),
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htons(68),
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srcA.s_addr,
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dstA.s_addr,
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payload,
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(sizeof (payload)));
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offset += (sizeof (udp4::header));
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dump_hex(udp4_header, (sizeof (udp4::header)));
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uint32_t transaction_id = 0x122767a8;
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int dhcp4_length = dhcp4::make_message(reinterpret_cast<void *>(&buf[offset]),
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dhcp4::op::bootrequest,
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transaction_id,
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dhcp4::message_type::dhcprequest);
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dump_hex(&buf[offset], dhcp4_length);
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offset += dhcp4_length;
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}
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