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1293 | giacomo | 1 | /* |
2 | * Project: S.Ha.R.K. |
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3 | * |
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4 | * Coordinators: |
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5 | * Giorgio Buttazzo <giorgio@sssup.it> |
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6 | * Paolo Gai <pj@gandalf.sssup.it> |
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7 | * |
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8 | * Authors : |
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9 | * Giacomo Guidi <giacomo@gandalf.sssup.it> |
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10 | * |
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11 | * ReTiS Lab (Scuola Superiore S.Anna - Pisa - Italy) |
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12 | * |
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13 | * http://www.sssup.it |
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14 | * http://retis.sssup.it |
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15 | * http://shark.sssup.it |
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16 | */ |
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17 | |||
18 | #include <netinet/in.h> |
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19 | |||
20 | #include <sys/socket.h> |
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21 | #include <netinet/in.h> |
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22 | #include <arpa/inet.h> |
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23 | #include <netdb.h> |
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24 | #include <stdio.h> |
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25 | #include <unistd.h>/* close() */ |
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26 | #include <stdlib.h> |
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27 | #include <signal.h> |
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28 | |||
29 | #define SERVER_PORT 20000 |
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30 | #define MAX_MSG 10000 |
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31 | |||
32 | struct tracer_udp_header { |
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33 | char id[12]; |
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34 | unsigned int pkt_number; |
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35 | unsigned int events; |
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36 | unsigned int size; |
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37 | }; |
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38 | |||
39 | FILE *output_file; |
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40 | |||
41 | void close_and_exit() |
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42 | { |
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43 | |||
44 | printf("Closing...\n"); |
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45 | |||
46 | fclose(output_file); |
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47 | |||
48 | exit(0); |
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49 | |||
50 | } |
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51 | |||
52 | int main(int argc, char *argv[]) |
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53 | { |
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54 | int sd, rc, n, cliLen; |
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55 | struct sockaddr_in cliAddr, servAddr; |
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56 | char msg[MAX_MSG]; |
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57 | char ch; |
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58 | |||
59 | struct tracer_udp_header *pkt_head = (struct tracer_udp_header *)(msg); |
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60 | |||
61 | if (argc < 2) { |
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62 | printf("%s: Enter the output file name [%s filename]\n",argv[0],argv[0]); |
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63 | exit(1); |
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64 | } |
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65 | |||
66 | // socket creation |
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67 | sd = socket(AF_INET, SOCK_DGRAM, 0); |
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68 | if(sd < 0) { |
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69 | printf("%s: cannot open socket \n",argv[0]); |
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70 | exit(1); |
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71 | } |
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72 | |||
73 | output_file = fopen(argv[1],"w+b"); |
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74 | if (output_file == NULL) { |
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75 | printf("%s: Cannot open the file\n"); |
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76 | exit(1); |
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77 | } |
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78 | |||
79 | // bind local server port |
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80 | servAddr.sin_family = AF_INET; |
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81 | |||
82 | servAddr.sin_addr.s_addr = htonl(INADDR_ANY); |
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83 | servAddr.sin_port = htons(SERVER_PORT); |
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84 | |||
85 | rc = bind (sd, (struct sockaddr *)&servAddr,sizeof(servAddr)); |
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86 | if(rc < 0) { |
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87 | printf("%s: cannot bind port number %d \n", |
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88 | argv[0], SERVER_PORT); |
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89 | exit(1); |
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90 | } |
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91 | |||
92 | signal(SIGINT, close_and_exit); |
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93 | |||
94 | while(1) { |
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95 | |||
96 | printf("Wait packet...\n"); |
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97 | |||
98 | // receive message |
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99 | cliLen = sizeof(cliAddr); |
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100 | n = recvfrom(sd, msg, MAX_MSG, 0,(struct sockaddr *)&cliAddr, &cliLen); |
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101 | |||
102 | printf("Received %d, length %d(%d), %d tracer events.\n", |
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103 | pkt_head->pkt_number, n, pkt_head->size, pkt_head->events); |
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104 | |||
105 | if(n < 0) { |
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106 | printf("%s: cannot receive data \n",argv[0]); |
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107 | continue; |
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108 | } |
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109 | |||
110 | fwrite((void *)(msg+sizeof(struct tracer_udp_header)),n-sizeof(struct tracer_udp_header),1,output_file); |
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111 | |||
112 | } |
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113 | |||
114 | fclose(output_file); |
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115 | |||
116 | return 0; |
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117 | |||
118 | } |
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119 |