| 1 | #include <libtrace.h> |
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| 2 | #include <stdio.h> |
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| 3 | #include <stdlib.h> |
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| 4 | #include <inttypes.h> |
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| 5 | #include <stdbool.h> |
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| 6 | #include <getopt.h> |
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| 7 | |
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| 8 | void usage(char *argv0) |
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| 9 | { |
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| 10 | fprintf(stderr,"Usage: %s [ -i | --set-interface ] [ -u | --unique-packets ] outputuri traceuri...\n",argv0); |
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| 11 | fprintf(stderr,"\n"); |
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| 12 | fprintf(stderr,"Merges traces together, with -i each trace gets it's own direction/interface,\n without traces keep whatever direction/interface they have set\n"); |
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| 13 | exit(1); |
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| 14 | } |
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| 15 | |
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| 16 | int main(int argc, char *argv[]) |
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| 17 | { |
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| 18 | |
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| 19 | struct libtrace_out_t *output; |
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| 20 | struct libtrace_t **input; |
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| 21 | struct libtrace_packet_t **packet; |
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| 22 | bool *live; |
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| 23 | bool set_interface=false; |
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| 24 | bool unique_packets=false; |
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| 25 | int i=0; |
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| 26 | uint64_t last_ts=0; |
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| 27 | |
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| 28 | while (1) { |
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| 29 | int option_index; |
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| 30 | struct option long_options[] = { |
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| 31 | { "set-interface", 0, 0, 'i' }, |
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| 32 | { "unique-packets", 0, 0, 'u' }, |
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| 33 | { NULL, 0, 0, 0 }, |
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| 34 | }; |
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| 35 | |
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| 36 | int c=getopt_long(argc, argv, "iu", |
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| 37 | long_options, &option_index); |
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| 38 | |
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| 39 | if (c==-1) |
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| 40 | break; |
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| 41 | |
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| 42 | switch (c) { |
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| 43 | case 'i': set_interface=true; break; |
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| 44 | case 'u': unique_packets=true; break; |
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| 45 | default: |
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| 46 | fprintf(stderr,"unknown option: %c\n",c); |
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| 47 | usage(argv[0]); |
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| 48 | |
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| 49 | } |
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| 50 | |
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| 51 | } |
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| 52 | |
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| 53 | if (optind+2>argc) |
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| 54 | usage(argv[0]); |
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| 55 | |
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| 56 | output=trace_create_output(argv[optind]); |
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| 57 | if (trace_is_err_output(output)) { |
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| 58 | trace_perror_output(output,"trace_create"); |
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| 59 | return 1; |
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| 60 | } |
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| 61 | if (trace_start_output(output)==-1) { |
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| 62 | trace_perror_output(output,"trace_start"); |
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| 63 | return 1; |
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| 64 | } |
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| 65 | |
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| 66 | input=calloc((argc-optind),sizeof(struct libtrace_t *)); |
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| 67 | packet=calloc((argc-optind),sizeof(struct libtrace_packet_t *)); |
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| 68 | live=calloc((argc-optind),sizeof(bool)); |
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| 69 | for(i=0;i<argc-optind;++i) { |
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| 70 | libtrace_t *f; |
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| 71 | libtrace_packet_t *p; |
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| 72 | f=trace_create(argv[i+optind]); |
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| 73 | if (trace_is_err(f)) { |
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| 74 | trace_perror(f,"trace_create"); |
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| 75 | return 1; |
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| 76 | } |
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| 77 | if (trace_start(f)==-1) { |
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| 78 | trace_perror(f,"trace_start"); |
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| 79 | return 1; |
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| 80 | } |
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| 81 | p=trace_create_packet(); |
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| 82 | input[i]=f; |
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| 83 | packet[i]=p; |
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| 84 | if (trace_read_packet(f,packet[i])>0) |
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| 85 | live[i]=true; |
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| 86 | } |
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| 87 | |
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| 88 | while(1) { |
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| 89 | uint64_t oldest_ts=0; |
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| 90 | int oldest=-1; |
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| 91 | for(i=0;i<argc-2;++i) { |
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| 92 | if (!live[i] && input[i]) { |
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| 93 | int ret=trace_read_packet(input[i],packet[i]); |
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| 94 | if (ret<0) { |
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| 95 | /* Error */ |
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| 96 | perror(argv[i+2]); |
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| 97 | trace_destroy(input[i]); |
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| 98 | input[i]=NULL; |
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| 99 | } |
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| 100 | else if (ret==0) { |
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| 101 | /* EOF */ |
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| 102 | trace_destroy(input[i]); |
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| 103 | input[i]=NULL; |
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| 104 | } |
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| 105 | else |
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| 106 | live[i]=true; |
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| 107 | } |
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| 108 | if (live[i] && |
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| 109 | (oldest==-1 || |
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| 110 | oldest_ts>trace_get_erf_timestamp(packet[i]))) { |
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| 111 | oldest=i; |
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| 112 | oldest_ts=trace_get_erf_timestamp(packet[i]); |
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| 113 | } |
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| 114 | } |
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| 115 | /* We have run out of packets! */ |
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| 116 | if (oldest==-1) { |
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| 117 | break; |
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| 118 | } |
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| 119 | |
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| 120 | live[oldest]=false; |
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| 121 | |
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| 122 | if (set_interface) |
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| 123 | trace_set_direction(packet[oldest],oldest); |
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| 124 | |
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| 125 | if (unique_packets && oldest_ts == last_ts) |
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| 126 | continue; |
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| 127 | |
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| 128 | trace_write_packet(output,packet[oldest]); |
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| 129 | |
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| 130 | last_ts=oldest_ts; |
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| 131 | |
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| 132 | } |
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| 133 | trace_destroy_output(output); |
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| 134 | |
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| 135 | return 0; |
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| 136 | } |
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