150 lines
4.7 KiB
C
150 lines
4.7 KiB
C
/*-
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* Copyright (c) 2018, Babak Farrokhi
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* * Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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*
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* * Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <stdio.h>
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#include <ifaddrs.h>
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#include <net/if.h>
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#include <string.h>
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#include <stdarg.h>
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#include <stdlib.h>
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#include <unistd.h>
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#define IFA_STAT(s) (((struct if_data *)ifa->ifa_data)->ifi_ ## s)
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#define PACKAGE_NAME "ifcounters"
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#define PACKAGE_VERSION "0.1"
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void show_help()
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{
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printf(
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"Usage: ifcounters [-v] [-h] [-b|-p|-e|-m|-q] interface\n" \
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"\n" \
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"Options:\n" \
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" -b Input/Output Bytes counter\n" \
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" -p Input/Output Unicast Packets counter\n" \
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" -e Input/Output Errors counter\n" \
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" -m Input/Output Multicast Packets counter\n" \
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" -q Input/Output Queue Drops counter\n" \
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" -v Display version information\n" \
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" -h Display this help message\n"
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);
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}
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void show_version()
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{
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printf("%s %s\n", PACKAGE_NAME, PACKAGE_VERSION);
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printf("Copyright (c) 2018 by Babak Farrokhi <babak@farrokhi.net>\n");
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}
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int main(int argc, char **argv)
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{
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struct ifaddrs *ifap, *ifa;
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char *ifname, *param;
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int flag, c;
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flag = 0;
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if (argc < 2) {
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show_help();
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exit(0);
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}
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while ((c = getopt(argc, argv, "hvb:p:e:m:q:")) != -1) {
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switch (c) {
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case 'h':
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show_help();
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exit(0);
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case 'v':
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show_version();
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exit(0);
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case 'b':
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case 'p':
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case 'e':
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case 'm':
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case 'q':
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flag = c;
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param = strdup(optarg);
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break;
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case '?':
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default:
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show_help();
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printf("\n");
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show_version();
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exit(1);
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}
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}
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argc -= optind;
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argv += optind;
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if (flag == 0) {
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show_help();
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exit(1);
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}
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if (getifaddrs(&ifap) != 0) {
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fprintf(stderr, "error\n");
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}
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else {
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for (ifa = ifap; ifa; ifa= ifa->ifa_next) {
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ifname = ifa->ifa_name;
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if (strcmp(ifa->ifa_name, param) == 0) {
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switch (flag) {
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case 'b':
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printf("rbytes.value %lu\nobytes.value %lu\n", IFA_STAT(ibytes), IFA_STAT(obytes));
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break;
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case 'p':
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printf("rpackets.value %lu\nopackets.value %lu\n", IFA_STAT(ipackets), IFA_STAT(opackets));
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break;
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case 'e':
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printf("rerrors.value %lu\noerrors.value %lu\n", IFA_STAT(ierrors), IFA_STAT(oerrors));
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break;
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case 'm':
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printf("rmcasts.value %lu\nomcasts.value %lu\n", IFA_STAT(imcasts), IFA_STAT(omcasts));
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break;
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case 'q':
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printf("rqdrops.value %lu\noqdrops.value %lu\n", IFA_STAT(iqdrops), IFA_STAT(oqdrops));
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break;
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default:
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printf("invalid flag");
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exit(1);
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}
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exit(0);
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}
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while (ifa->ifa_next != NULL &&
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(strcmp(ifa->ifa_next->ifa_name, ifname) == 0)) {
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ifa = ifa->ifa_next;
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}
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}
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printf("Unknown interface: %s\n", param);
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exit(1);
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}
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}
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