mirror of
https://github.com/vel21ripn/nDPI.git
synced 2026-04-28 15:09:47 +00:00
99 lines
2.4 KiB
C
99 lines
2.4 KiB
C
/*
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* Copyright (C) 2011-26 - ntop.org
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*
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* nDPI is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* nDPI is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with nDPI. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <stdarg.h>
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#include <assert.h>
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#include <math.h>
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#include "ndpi_api.h"
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u_int64_t timeval2usec(const struct timeval *tv) {
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return(tv->tv_sec*1000000+tv->tv_usec);
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}
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float tdiff2sec(const struct timeval *begin, const struct timeval *end) {
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u_int64_t b = timeval2usec(begin);
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u_int64_t e = timeval2usec(end);
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u_int64_t diff = e - b;
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return((float)diff / 1000000.);
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}
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int main(int argc, char *argv[]) {
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const char* top_file = "top-1m.csv";
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FILE *fd = fopen(top_file, "r");
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void *automa = ndpi_init_automa();
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char * line = NULL;
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size_t len = 0;
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u_int32_t num = 0, num_search = 100, i;
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ssize_t read;
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struct timeval search, begin, end;
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u_int64_t tdiff;
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if(fd == NULL) {
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printf("Unable to open file %s\n", top_file);
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return(-1);
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}
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assert(automa);
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printf("Building the automa...\n");
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gettimeofday(&begin, NULL);
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while ((read = getline(&line, &len, fd)) != -1) {
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char *t = strtok(line, ",");
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if(t) t = strtok(NULL, "\n");
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if(t != NULL) {
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u_int len = strlen(t);
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t[len] = '\0';
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assert(ndpi_add_string_to_automa(automa, ndpi_strdup(t)) == 0);
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num++;
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if(num == 100000) break;
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}
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}
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fclose(fd);
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ndpi_finalize_automa(automa);
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gettimeofday(&search, NULL);
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printf("Automa with %u words built successfully in %.1f sec [%.1f MB]\n",
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num, tdiff2sec(&begin, &search),
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(float)ndpi_get_tot_allocated_memory()/(float)(1024*1024));
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gettimeofday(&search, NULL);
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for(i=0; i<num_search; i++)
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assert(ndpi_match_string(automa, "github.com") == 1);
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gettimeofday(&end, NULL);
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printf("String searched in %.2f usec\n",
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(float)(timeval2usec(&end) - timeval2usec(&search))/(float)num_search);
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ndpi_free_automa(automa);
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return(0);
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}
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