android firmware 利用UDP socket发送Magic Packet

Posted 2020-07-28

android firmware 利用UDP socket发送Magic Packet

 

 1 #include <stdio.h> 
 2 #include <string.h> 
 3 #include <stdlib.h> 
 4 #include <unistd.h> 
 5 #include <sys/types.h> 
 6 #include <sys/stat.h> 
 7 #include <sys/socket.h> 
 8 #include <netinet/in.h> 
 9 #include <arpa/inet.h> 
10 #include <netdb.h> 
11 
12 void fill_magic_buf(void *magic_buf, void *mac) 
13 { 
14          int i; 
15          char *ptr; 
16 
17          ptr = magic_buf; 
18          memset(ptr, 0xFF, 6); 
19          ptr += 6; 
20 
21          for(i = 0; i < 16; ++i) { 
22                  memcpy(ptr, mac, 6); 
23                  ptr += 6; 
24          } 
25 } 
26 
27 void usage(void) 
28 { 
29          printf("usage...\n"); 
30  } 
31 
32 int main(int argc, char **argv) 
33 { 
34          int s; 
35          int packet_num = 10; 
36          char c; 
37 
38          unsigned char mac[6] = {0x94, 0x39, 0xE5, 0x02, 0x5E, 0xC9}; 
39          char dstip[256] = "192.168.1.103"; 
40          int port = 4097; 
41 
42          struct sockaddr_in address; 
43          char magic_buf[6 + 6 * 16] = {0}; 
44 
45          daemon(0,0);    /* run in background */ 
46 
47          while((c = getopt(argc, argv, "d:m:p:")) != -1) { 
48                  switch(c) { 
49                  case ‘d‘: 
50                          strcpy(dstip, optarg); 
51                          break; 
52                  case ‘m‘: 
53                          sscanf(optarg, "%x:%x:%x:%x:%x:%x", 
54                                  (unsigned int*)&mac[0], (unsigned int*)&mac[1], 
55                                  (unsigned int*)&mac[2], (unsigned int*)&mac[3], 
56                                  (unsigned int*)&mac[4], (unsigned int*)&mac[5]); 
57                          break; 
58                  case ‘p‘: 
59                          port = atoi(optarg); 
60                          break; 
61                  default: 
62                          usage(); 
63                          return -1; 
64                  } 
65          } 
66 
67          s = socket(AF_INET, SOCK_DGRAM, 0); 
68 
69          if (s == -1) { 
70                  perror("Opening socket"); 
71                  exit(EXIT_FAILURE); 
72          } 
73 
74          memset(&address, 0, sizeof(struct sockaddr_in)); 
75          address.sin_family = AF_INET; 
76          address.sin_addr.s_addr = inet_addr(dstip); 
77          address.sin_port = htons(port); 
78 
79          fill_magic_buf(magic_buf, mac); 
80 
81          /* ten packets. TODO: use ping to check whether the destination is on or else. */ 
82          while (packet_num-- > 0) { 
83                  if (sendto(s, magic_buf, sizeof(magic_buf), 0, 
84                       (struct sockaddr *)&address, sizeof(address)) < 0) { 
85                          printf("sendto\n"); 
86                          exit(EXIT_FAILURE); 
87                  } 
88                  sleep(1); 
89          } 
90 
91          exit(EXIT_SUCCESS); 
92 }