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 | #include <string.h> |
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8 | |
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9 | char *strdupcat(char *str,char *app) |
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10 | { |
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11 | str=realloc(str,strlen(str)+strlen(app)+1); |
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12 | strcat(str,app); |
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13 | return str; |
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14 | } |
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15 | |
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16 | char *strdupcati(char *str,int i) |
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17 | { |
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18 | char buffer[64]; |
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19 | snprintf(buffer,sizeof(buffer),"%i",i); |
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20 | return strdupcat(str,buffer); |
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21 | } |
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22 | |
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23 | int usage(char *argv) |
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24 | { |
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25 | printf("Usage: %s inputurl [ -c count ] [ -f bpffilter ] [ -b bytes ]\n\t[ -s starttime ] [ -e endtime ] [ -i interval ] outputurl\n",argv); |
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26 | printf("\n"); |
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27 | printf("Splits up traces\n"); |
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28 | printf("-c count split every count packets\n"); |
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29 | printf("-f bpffilter only output packets that match filter\n"); |
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30 | printf("-b bytes split every capture bytes\n"); |
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31 | printf("-s time start at starttime\n"); |
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32 | printf("-e time end at endtime\n"); |
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33 | printf("-i seconds create a new trace every <seconds>\n"); |
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34 | printf("\n"); |
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35 | exit(1); |
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36 | } |
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37 | |
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38 | int main(int argc, char *argv[]) |
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39 | { |
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40 | struct libtrace_filter_t *filter=NULL; |
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41 | struct libtrace_out_t *output = NULL; |
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42 | struct libtrace_t *input; |
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43 | uint64_t count=UINT64_MAX; |
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44 | uint64_t bytes=UINT64_MAX; |
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45 | uint64_t starttime=0; |
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46 | uint64_t endtime=UINT64_MAX; |
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47 | uint64_t interval=UINT64_MAX; |
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48 | double firsttime=0; |
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49 | uint64_t pktcount=0; |
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50 | uint64_t totbytes=0; |
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51 | uint64_t totbyteslast=0; |
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52 | |
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53 | if (argc<2) { |
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54 | usage(argv[0]); |
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55 | return 1; |
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56 | } |
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57 | |
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58 | /* Parse command line options */ |
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59 | while(1) { |
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60 | int option_index; |
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61 | struct option long_options[] = { |
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62 | { "filter", 1, 0, 'f' }, |
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63 | { "count", 1, 0, 'c' }, |
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64 | { "bytes", 1, 0, 'b' }, |
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65 | { "starttime", 1, 0, 's' }, |
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66 | { "endtime", 1, 0, 'e' }, |
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67 | { "interval", 1, 0, 'i' }, |
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68 | { NULL, 0, 0, 0 }, |
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69 | }; |
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70 | |
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71 | int c=getopt_long(argc, argv, "f:c:b:s:e:i:", |
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72 | long_options, &option_index); |
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73 | |
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74 | if (c==-1) |
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75 | break; |
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76 | |
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77 | switch (c) { |
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78 | case 'f': filter=trace_bpf_setfilter(optarg); |
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79 | break; |
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80 | case 'c': count=atoi(optarg); |
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81 | break; |
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82 | case 'b': bytes=atoi(optarg); |
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83 | break; |
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84 | case 's': starttime=atoi(optarg); /* FIXME: use getdate */ |
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85 | break; |
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86 | case 'e': endtime=atoi(optarg); |
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87 | break; |
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88 | case 'i': interval=atoi(optarg); |
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89 | break; |
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90 | default: |
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91 | fprintf(stderr,"Unknown option: %c\n",c); |
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92 | usage(argv[0]); |
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93 | return 1; |
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94 | } |
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95 | } |
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96 | if (optind+2<argc) { |
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97 | fprintf(stderr,"missing inputuri or outputuri\n"); |
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98 | usage(argv[0]); |
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99 | } |
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100 | |
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101 | output=NULL; |
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102 | input=trace_create(argv[optind]); |
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103 | |
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104 | while(1) { |
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105 | struct libtrace_packet_t packet; |
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106 | if (trace_read_packet(input,&packet)<1) { |
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107 | break; |
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108 | } |
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109 | |
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110 | |
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111 | if (filter && !trace_bpf_filter(filter,&packet)) { |
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112 | continue; |
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113 | } |
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114 | |
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115 | if (trace_get_seconds(&packet)<starttime) { |
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116 | continue; |
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117 | } |
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118 | |
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119 | if (trace_get_seconds(&packet)>endtime) { |
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120 | break; |
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121 | } |
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122 | |
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123 | if (firsttime==0) { |
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124 | firsttime=trace_get_seconds(&packet); |
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125 | } |
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126 | |
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127 | if (output && trace_get_seconds(&packet)>firsttime+interval) { |
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128 | trace_output_destroy(output); |
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129 | output=NULL; |
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130 | firsttime+=interval; |
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131 | } |
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132 | |
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133 | pktcount++; |
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134 | if (output && pktcount%count==0) { |
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135 | trace_output_destroy(output); |
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136 | output=NULL; |
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137 | } |
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138 | |
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139 | totbytes+=trace_get_capture_length(&packet); |
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140 | if (output && totbytes-totbyteslast>=bytes) { |
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141 | trace_output_destroy(output); |
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142 | output=NULL; |
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143 | totbyteslast=totbytes; |
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144 | } |
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145 | |
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146 | if (!output) { |
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147 | char *buffer; |
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148 | buffer=strdup(argv[optind+1]); |
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149 | if (interval!=UINT64_MAX) { |
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150 | buffer=strdupcat(buffer,"-"); |
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151 | buffer=strdupcati(buffer,firsttime); |
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152 | } |
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153 | if (count!=UINT64_MAX) { |
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154 | buffer=strdupcat(buffer,"-"); |
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155 | buffer=strdupcati(buffer,pktcount); |
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156 | } |
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157 | if (bytes!=UINT64_MAX) { |
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158 | static int filenum=0; |
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159 | buffer=strdupcat(buffer,"-"); |
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160 | buffer=strdupcati(buffer,++filenum); |
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161 | } |
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162 | output=trace_output_create(buffer); |
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163 | free(buffer); |
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164 | } |
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165 | |
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166 | trace_write_packet(output,&packet); |
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167 | } |
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168 | |
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169 | if (!output) |
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170 | trace_output_destroy(output); |
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171 | |
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172 | return 0; |
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173 | } |
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