51 lines
1.5 KiB
C
51 lines
1.5 KiB
C
#include <pcap.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <sys/socket.h>
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#include <netinet/in.h>
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#include <arpa/inet.h>
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static const uint8_t test_frame[42] = {
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0x11, 0x22, 0x33, 0x44, 0x55, 0x66, // dst mac b0:7b:25:00:89:53
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0x77, 0x88, 0x99, 0xaa, 0xbb, 0xcc, // src mac
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0x08, 0x06, 0x00, 0x01, 0x08, 0x00, 0x06, 0x04, 0x00, 0x02, // arp reply
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0x77, 0x88, 0x99, 0xaa, 0xbb, 0xcc, // src mac
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10, 11, 12, 13, // src ip 192.168.123.100
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0x11, 0x22, 0x33, 0x44, 0x55, 0x66, // dst mac b0:7b:25:00:89:53
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14, 15, 16, 17 // dst ip 192.168.123.178
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};
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int main() {
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char errbuf[PCAP_ERRBUF_SIZE];
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pcap_t *handle;
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// 打开网络设备
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handle = pcap_open_live("eno1", BUFSIZ, 0, 1000, errbuf);
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if (handle == NULL) {
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fprintf(stderr, "Couldn't open device: %s\n", errbuf);
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return 1;
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}
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// 构建数据包
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u_char packet[1024];
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int packet_len = 0;
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memcpy(packet, test_frame, 42);
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packet_len = 42;
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// 发送数据包
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int ret = pcap_inject(handle, packet, packet_len);
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if (ret == -1) {
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fprintf(stderr, "Couldn't send packet: %s\n", pcap_geterr(handle));
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pcap_close(handle);
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return 1;
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} else {
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printf("Packet sent successfully (%d bytes)\n", ret);
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}
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// 关闭网络设备
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pcap_close(handle);
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return 0;
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} |