src/client/lldpctl.c

   1 /* -*- mode: c; c-file-style: "openbsd" -*- */
   2 /*
   3  * Copyright (c) 2008 Vincent Bernat <bernat@luffy.cx>
   4  *
   5  * Permission to use, copy, modify, and/or distribute this software for any
   6  * purpose with or without fee is hereby granted, provided that the above
   7  * copyright notice and this permission notice appear in all copies.
   8  *
   9  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
  10  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  11  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  12  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  13  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  14  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  15  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  16  */
  17
  18 #include <stdio.h>
  19 #include <stdlib.h>
  20 #include <unistd.h>
  21 #include <time.h>
  22 #include <errno.h>
  23 #include <sys/types.h>
  24 #include <sys/socket.h>
  25 #include <sys/un.h>
  26 #include <arpa/inet.h>
  27
  28 #include "../log.h"
  29 #include "../ctl.h"
  30 #include "client.h"
  31
  32 static void              usage(void);
  33
  34 #ifdef HAVE___PROGNAME
  35 extern const char       *__progname;
  36 #else
  37 # define __progname "lldpctl"
  38 #endif
  39
  40
  41 static void
  42 usage(void)
  43 {
  44         fprintf(stderr, "Usage:   %s [OPTIONS ...] [INTERFACES ...]\n", __progname);
  45         fprintf(stderr, "Version: %s\n", PACKAGE_STRING);
  46
  47         fprintf(stderr, "\n");
  48
  49         fprintf(stderr, "-d          Enable more debugging information.\n");
  50         fprintf(stderr, "-a          Display all remote ports, including hidden ones.\n");
  51         fprintf(stderr, "-f format   Choose output format (plain, keyvalue or xml).\n");
  52         fprintf(stderr, "-L location Enable the transmission of LLDP-MED location TLV for the\n");
  53         fprintf(stderr, "            given interfaces. Can be repeated to enable the transmission\n");
  54         fprintf(stderr, "            of the location in several formats.\n");
  55         fprintf(stderr, "-P policy   Enable the transmission of LLDP-MED Network Policy TLVs\n");
  56         fprintf(stderr, "            for the given interfaces. Can be repeated to specify\n");
  57         fprintf(stderr, "            different policies.\n");
  58         fprintf(stderr, "-O poe      Enable the transmission of LLDP-MED POE-MDI TLV\n");
  59         fprintf(stderr, "            for the given interfaces.\n");
  60         fprintf(stderr, "-o poe      Enable the transmission of Dot3 POE-MDI TLV\n");
  61         fprintf(stderr, "            for the given interfaces.\n");
  62
  63         fprintf(stderr, "\n");
  64
  65         fprintf(stderr, "see manual page lldpctl(8) for more information\n");
  66         exit(1);
  67 }
  68
  69 int
  70 main(int argc, char *argv[])
  71 {
  72         int ch, debug = 1;
  73         char * fmt = "plain";
  74         int action = 0, hidden = 0;
  75         lldpctl_conn_t *conn;
  76
  77         /* Get and parse command line options */
  78         while ((ch = getopt(argc, argv, LLDPCTL_ARGS)) != -1) {
  79                 switch (ch) {
  80                 case 'h':
  81                         usage();
  82                         break;
  83                 case 'd':
  84                         debug++;
  85                         break;
  86                 case 'v':
  87                         fprintf(stdout, "%s\n", PACKAGE_VERSION);
  88                         exit(0);
  89                         break;
  90                 case 'a':
  91                         hidden = 1;
  92                         break;
  93                 case 'f':
  94                         fmt = optarg;
  95                         break;
  96                 case 'L':
  97                 case 'P':
  98                 case 'O':
  99                 case 'o':
 100                         action = 1;
 101                         break;
 102                 default:
 103                         usage();
 104                 }
 105         }
 106
 107         log_init(debug, __progname);
 108
 109         if ((action != 0) && (getuid() != 0)) {
 110                 fatalx("mere mortals may not do that, 'root' privileges are required.");
 111         }
 112
 113         conn = lldpctl_new(NULL, NULL, NULL);
 114         if (conn == NULL) exit(EXIT_FAILURE);
 115
 116         if (!action) display_interfaces(conn, fmt, hidden, argc, argv);
 117         else modify_interfaces(conn, argc, argv, optind);
 118
 119         lldpctl_release(conn);
 120         return EXIT_SUCCESS;
 121 }