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/* lnstat - Unified linux network statistics
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*
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* Copyright (C) 2004 by Harald Welte <laforge@gnumonks.org>
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*
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* Development of this code was funded by Astaro AG, http://www.astaro.com/
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*
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* Based on original concept and ideas from predecessor rtstat.c:
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*
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* Copyright 2001 by Robert Olsson <robert.olsson@its.uu.se>
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* Uppsala University, Sweden
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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*/
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/* Maximum number of fields that can be displayed */
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#define MAX_FIELDS 128
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/* Maximum number of header lines */
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#define HDR_LINES 10
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/* default field width if none specified */
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#define FIELD_WIDTH_DEFAULT 8
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#define FIELD_WIDTH_MAX 20
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#define DEFAULT_INTERVAL 2
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#define HDR_LINE_LENGTH (MAX_FIELDS*FIELD_WIDTH_MAX)
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#include <unistd.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <getopt.h>
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#include <json_writer.h>
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#include "lnstat.h"
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static struct option opts[] = {
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{ "version", 0, NULL, 'V' },
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{ "count", 1, NULL, 'c' },
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{ "dump", 0, NULL, 'd' },
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{ "json", 0, NULL, 'j' },
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{ "file", 1, NULL, 'f' },
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{ "help", 0, NULL, 'h' },
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{ "interval", 1, NULL, 'i' },
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{ "keys", 1, NULL, 'k' },
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{ "subject", 1, NULL, 's' },
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{ "width", 1, NULL, 'w' },
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{ "oneline", 0, NULL, 0 },
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};
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static int usage(char *name, int exit_code)
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{
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fprintf(stderr,
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"%s Version %s\n"
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"Copyright (C) 2004 by Harald Welte <laforge@gnumonks.org>\n"
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"This program is free software licensed under GNU GPLv2\nwith ABSOLUTELY NO WARRANTY.\n"
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"\n"
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"Parameters:\n"
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" -V --version Print Version of Program\n"
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" -c --count <count> "
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"Print <count> number of intervals\n"
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" -d --dump "
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"Dump list of available files/keys\n"
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" -j --json "
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"Display in JSON format\n"
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" -f --file <file> Statistics file to use\n"
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" -h --help This help message\n"
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" -i --interval <intv> "
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"Set interval to 'intv' seconds\n"
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" -k --keys k,k,k,... Display only keys specified\n"
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" -s --subject [0-2] Control header printing:\n"
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" 0 = never\n"
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" 1 = once\n"
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" 2 = every 20 lines (default))\n"
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" -w --width n,n,n,... Width for each field\n"
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"\n",
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name, LNSTAT_VERSION);
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exit(exit_code);
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}
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struct field_param {
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const char *name;
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struct lnstat_field *lf;
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struct {
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unsigned int width;
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} print;
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};
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struct field_params {
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unsigned int num;
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struct field_param params[MAX_FIELDS];
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};
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static void print_line(FILE *of, const struct lnstat_file *lnstat_files,
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const struct field_params *fp)
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{
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int i;
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for (i = 0; i < fp->num; i++) {
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const struct lnstat_field *lf = fp->params[i].lf;
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fprintf(of, "%*lu|", fp->params[i].print.width, lf->result);
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}
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fputc('\n', of);
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}
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static void print_json(FILE *of, const struct lnstat_file *lnstat_files,
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const struct field_params *fp)
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{
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json_writer_t *jw = jsonw_new(of);
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int i;
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jsonw_start_object(jw);
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for (i = 0; i < fp->num; i++) {
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const struct lnstat_field *lf = fp->params[i].lf;
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jsonw_uint_field(jw, lf->name, lf->result);
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}
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jsonw_end_object(jw);
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jsonw_destroy(&jw;;
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}
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/* find lnstat_field according to user specification */
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static int map_field_params(struct lnstat_file *lnstat_files,
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struct field_params *fps, int interval)
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{
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int i, j = 0;
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struct lnstat_file *lf;
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/* no field specification on commandline, need to build default */
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if (!fps->num) {
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for (lf = lnstat_files; lf; lf = lf->next) {
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for (i = 0; i < lf->num_fields; i++) {
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fps->params[j].lf = &lf->fields[i];
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fps->params[j].lf->file->interval.tv_sec =
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interval;
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if (!fps->params[j].print.width)
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fps->params[j].print.width =
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FIELD_WIDTH_DEFAULT;
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if (++j >= MAX_FIELDS - 1) {
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fprintf(stderr,
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"WARN: MAX_FIELDS (%d) reached, truncating number of keys\n",
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MAX_FIELDS);
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goto full;
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}
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}
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}
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full:
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fps->num = j;
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return 1;
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}
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for (i = 0; i < fps->num; i++) {
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fps->params[i].lf = lnstat_find_field(lnstat_files,
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fps->params[i].name);
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if (!fps->params[i].lf) {
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fprintf(stderr, "Field `%s' unknown\n",
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fps->params[i].name);
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return 0;
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}
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fps->params[i].lf->file->interval.tv_sec = interval;
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if (!fps->params[i].print.width)
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fps->params[i].print.width = FIELD_WIDTH_DEFAULT;
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}
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return 1;
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}
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struct table_hdr {
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int num_lines;
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char *hdr[HDR_LINES];
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};
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static struct table_hdr *build_hdr_string(struct lnstat_file *lnstat_files,
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struct field_params *fps,
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int linewidth)
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{
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int h, i;
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static struct table_hdr th;
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int ofs = 0;
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for (i = 0; i < HDR_LINES; i++)
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th.hdr[i] = calloc(1, HDR_LINE_LENGTH);
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for (i = 0; i < fps->num; i++) {
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char *cname, *fname = fps->params[i].lf->name;
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unsigned int width = fps->params[i].print.width;
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snprintf(th.hdr[0]+ofs, width+2, "%*.*s|", width, width,
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fps->params[i].lf->file->basename);
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cname = fname;
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for (h = 1; h < HDR_LINES; h++) {
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if (cname - fname >= strlen(fname))
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snprintf(th.hdr[h]+ofs, width+2,
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"%*.*s|", width, width, "");
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else {
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th.num_lines = h+1;
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snprintf(th.hdr[h]+ofs, width+2,
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"%*.*s|", width, width, cname);
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}
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cname += width;
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}
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ofs += width+1;
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}
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/* fill in spaces */
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for (h = 1; h <= th.num_lines; h++) {
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for (i = 0; i < ofs; i++) {
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if (th.hdr[h][i] == '\0')
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th.hdr[h][i] = ' ';
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}
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}
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return &th;
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}
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static int print_hdr(FILE *of, struct table_hdr *th)
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{
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int i;
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for (i = 0; i < th->num_lines; i++) {
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fputs(th->hdr[i], of);
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fputc('\n', of);
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}
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return 0;
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}
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int main(int argc, char **argv)
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{
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struct lnstat_file *lnstat_files;
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const char *basename;
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d3f73b |
int i, c;
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d3f73b |
int interval = DEFAULT_INTERVAL;
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Packit |
d3f73b |
int hdr = 2;
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Packit |
d3f73b |
enum {
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Packit |
d3f73b |
MODE_DUMP,
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Packit |
d3f73b |
MODE_JSON,
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Packit |
d3f73b |
MODE_NORMAL,
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Packit |
d3f73b |
} mode = MODE_NORMAL;
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Packit |
d3f73b |
unsigned long count = 0;
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Packit |
d3f73b |
struct table_hdr *header;
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Packit |
d3f73b |
static struct field_params fp;
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Packit |
d3f73b |
int num_req_files = 0;
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Packit |
d3f73b |
char *req_files[LNSTAT_MAX_FILES];
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Packit |
d3f73b |
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Packit |
d3f73b |
/* backwards compatibility mode for old tools */
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d3f73b |
basename = strrchr(argv[0], '/');
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Packit |
d3f73b |
if (basename)
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d3f73b |
basename += 1; /* name after slash */
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Packit |
d3f73b |
else
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d3f73b |
basename = argv[0]; /* no slash */
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Packit |
d3f73b |
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Packit |
d3f73b |
if (!strcmp(basename, "rtstat")) {
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Packit |
d3f73b |
/* rtstat compatibility mode */
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Packit |
d3f73b |
req_files[0] = "rt_cache";
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Packit |
d3f73b |
num_req_files = 1;
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Packit |
d3f73b |
} else if (!strcmp(basename, "ctstat")) {
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Packit |
d3f73b |
/* ctstat compatibility mode */
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Packit |
d3f73b |
req_files[0] = "ip_conntrack";
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Packit |
d3f73b |
num_req_files = 1;
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Packit |
d3f73b |
}
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Packit |
d3f73b |
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Packit |
d3f73b |
while ((c = getopt_long(argc, argv, "Vc:djpf:h?i:k:s:w:",
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Packit |
d3f73b |
opts, NULL)) != -1) {
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Packit |
d3f73b |
int len = 0;
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Packit |
d3f73b |
char *tmp, *tok;
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Packit |
d3f73b |
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Packit |
d3f73b |
switch (c) {
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Packit |
d3f73b |
case 'c':
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Packit |
d3f73b |
count = strtoul(optarg, NULL, 0);
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Packit |
d3f73b |
break;
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Packit |
d3f73b |
case 'd':
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Packit |
d3f73b |
mode = MODE_DUMP;
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Packit |
d3f73b |
break;
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Packit |
d3f73b |
case 'j':
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Packit |
d3f73b |
mode = MODE_JSON;
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Packit |
d3f73b |
break;
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Packit |
d3f73b |
case 'f':
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Packit |
d3f73b |
req_files[num_req_files++] = strdup(optarg);
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Packit |
d3f73b |
break;
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Packit |
d3f73b |
case '?':
|
|
Packit |
d3f73b |
case 'h':
|
|
Packit |
d3f73b |
usage(argv[0], 0);
|
|
Packit |
d3f73b |
break;
|
|
Packit |
d3f73b |
case 'i':
|
|
Packit |
d3f73b |
sscanf(optarg, "%u", &interval);
|
|
Packit |
d3f73b |
break;
|
|
Packit |
d3f73b |
case 'k':
|
|
Packit |
d3f73b |
tmp = strdup(optarg);
|
|
Packit |
d3f73b |
if (!tmp)
|
|
Packit |
d3f73b |
break;
|
|
Packit |
d3f73b |
for (tok = strtok(tmp, ",");
|
|
Packit |
d3f73b |
tok;
|
|
Packit |
d3f73b |
tok = strtok(NULL, ",")) {
|
|
Packit |
d3f73b |
if (fp.num >= MAX_FIELDS) {
|
|
Packit |
d3f73b |
fprintf(stderr,
|
|
Packit |
d3f73b |
"WARN: too many keys requested: (%d max)\n",
|
|
Packit |
d3f73b |
MAX_FIELDS);
|
|
Packit |
d3f73b |
break;
|
|
Packit |
d3f73b |
}
|
|
Packit |
d3f73b |
fp.params[fp.num++].name = tok;
|
|
Packit |
d3f73b |
}
|
|
Packit |
d3f73b |
break;
|
|
Packit |
d3f73b |
case 's':
|
|
Packit |
d3f73b |
sscanf(optarg, "%u", &hdr);
|
|
Packit |
d3f73b |
break;
|
|
Packit |
d3f73b |
case 'w':
|
|
Packit |
d3f73b |
tmp = strdup(optarg);
|
|
Packit |
d3f73b |
if (!tmp)
|
|
Packit |
d3f73b |
break;
|
|
Packit |
d3f73b |
i = 0;
|
|
Packit |
d3f73b |
for (tok = strtok(tmp, ",");
|
|
Packit |
d3f73b |
tok;
|
|
Packit |
d3f73b |
tok = strtok(NULL, ",")) {
|
|
Packit |
d3f73b |
len = strtoul(tok, NULL, 0);
|
|
Packit |
d3f73b |
if (len > FIELD_WIDTH_MAX)
|
|
Packit |
d3f73b |
len = FIELD_WIDTH_MAX;
|
|
Packit |
d3f73b |
fp.params[i].print.width = len;
|
|
Packit |
d3f73b |
i++;
|
|
Packit |
d3f73b |
}
|
|
Packit |
d3f73b |
if (i == 1) {
|
|
Packit |
d3f73b |
for (i = 0; i < MAX_FIELDS; i++)
|
|
Packit |
d3f73b |
fp.params[i].print.width = len;
|
|
Packit |
d3f73b |
}
|
|
Packit |
d3f73b |
break;
|
|
Packit |
d3f73b |
default:
|
|
Packit |
d3f73b |
usage(argv[0], 1);
|
|
Packit |
d3f73b |
break;
|
|
Packit |
d3f73b |
}
|
|
Packit |
d3f73b |
}
|
|
Packit |
d3f73b |
|
|
Packit |
d3f73b |
lnstat_files = lnstat_scan_dir(PROC_NET_STAT, num_req_files,
|
|
Packit |
d3f73b |
(const char **) req_files);
|
|
Packit |
d3f73b |
|
|
Packit |
d3f73b |
switch (mode) {
|
|
Packit |
d3f73b |
case MODE_DUMP:
|
|
Packit |
d3f73b |
lnstat_dump(stdout, lnstat_files);
|
|
Packit |
d3f73b |
break;
|
|
Packit |
d3f73b |
|
|
Packit |
d3f73b |
case MODE_NORMAL:
|
|
Packit |
d3f73b |
case MODE_JSON:
|
|
Packit |
d3f73b |
if (!map_field_params(lnstat_files, &fp, interval))
|
|
Packit |
d3f73b |
exit(1);
|
|
Packit |
d3f73b |
|
|
Packit |
d3f73b |
header = build_hdr_string(lnstat_files, &fp, 80);
|
|
Packit |
d3f73b |
if (!header)
|
|
Packit |
d3f73b |
exit(1);
|
|
Packit |
d3f73b |
|
|
Packit |
d3f73b |
if (interval < 1)
|
|
Packit |
d3f73b |
interval = 1;
|
|
Packit |
d3f73b |
|
|
Packit |
d3f73b |
for (i = 0; i < count || !count; i++) {
|
|
Packit |
d3f73b |
lnstat_update(lnstat_files);
|
|
Packit |
d3f73b |
if (mode == MODE_JSON)
|
|
Packit |
d3f73b |
print_json(stdout, lnstat_files, &fp);
|
|
Packit |
d3f73b |
else {
|
|
Packit |
d3f73b |
if ((hdr > 1 && !(i % 20)) ||
|
|
Packit |
d3f73b |
(hdr == 1 && i == 0))
|
|
Packit |
d3f73b |
print_hdr(stdout, header);
|
|
Packit |
d3f73b |
print_line(stdout, lnstat_files, &fp);
|
|
Packit |
d3f73b |
}
|
|
Packit |
d3f73b |
fflush(stdout);
|
|
Packit |
d3f73b |
if (i < count - 1 || !count)
|
|
Packit |
d3f73b |
sleep(interval);
|
|
Packit |
d3f73b |
}
|
|
Packit |
d3f73b |
break;
|
|
Packit |
d3f73b |
}
|
|
Packit |
d3f73b |
|
|
Packit |
d3f73b |
return 1;
|
|
Packit |
d3f73b |
}
|