roy.marples.name Git - dhcpcd-ui/blob - src/libdhcpcd/misc.c

   1 /*
   2  * libdhcpcd
   3  * Copyright 2009 Roy Marples <roy@marples.name>
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  *
  14  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  15  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  16  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  17  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  18  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  19  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  20  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  21  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  22  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  23  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  24  * SUCH DAMAGE.
  25  */
  26
  27 #include <arpa/inet.h>
  28
  29 #include <stdio.h>
  30 #include <stdlib.h>
  31 #include <string.h>
  32
  33 #include <libintl.h>
  34
  35 #define IN_LIBDHCPCD
  36 #include "libdhcpcd.h"
  37
  38 #define _ gettext
  39
  40 static const char *const dhcpcd_up_reasons[] = {
  41         "BOUND",
  42         "RENEW",
  43         "REBIND",
  44         "REBOOT",
  45         "IPV4LL",
  46         "INFORM",
  47         "STATIC",
  48         "TIMEOUT",
  49         "ROUTERADVERT",
  50         NULL
  51 };
  52
  53 static const char *const dhcpcd_down_reasons[] = {
  54         "EXPIRE",
  55         "FAIL",
  56         "NAK",
  57         "NOCARRIER",
  58         "STOP",
  59         NULL
  60 };
  61
  62 bool
  63 dhcpcd_if_up(const DHCPCD_IF *i)
  64 {
  65         const char *const *r;
  66
  67         for (r = dhcpcd_up_reasons; *r; r++)
  68                 if (strcmp(*r, i->reason) == 0)
  69                         return true;
  70         return false;
  71 }
  72
  73 bool
  74 dhcpcd_if_down(const DHCPCD_IF *i)
  75 {
  76         const char *const *r;
  77
  78         for (r = dhcpcd_down_reasons; *r; r++)
  79                 if (strcmp(*r, i->reason) == 0)
  80                         return true;
  81         return false;
  82 }
  83
  84 char *
  85 dhcpcd_if_message(const DHCPCD_IF *i)
  86 {
  87         char *msg, *p;
  88         const char *reason = NULL;
  89         size_t len;
  90         bool showip, showssid;
  91
  92         showip = true;
  93         showssid = false;
  94         if (dhcpcd_if_up(i))
  95                 reason = _("Acquired address");
  96         else if (strcmp(i->reason, "EXPIRE") == 0)
  97                 reason = _("Expired");
  98         else if (strcmp(i->reason, "CARRIER") == 0) {
  99                 if (i->wireless) {
 100                         reason = _("Associated with");
 101                         if (*i->ssid != '\0')
 102                                 showssid = true;
 103                 } else
 104                         reason = _("Cable plugged in");
 105                 showip = false;
 106         } else if (strcmp(i->reason, "NOCARRIER") == 0) {
 107                 if (i->wireless) {
 108                         if (*i->ssid != '\0' || i->ip.s_addr != 0) {
 109                                 reason = _("Disassociated from");
 110                                 showssid = true;
 111                         } else
 112                                 reason = _("Not associated");
 113                 } else
 114                         reason = _("Cable unplugged");
 115                 showip = false;
 116         } else if (strcmp(i->reason, "FAIL") == 0)
 117                 reason = _("Automatic configuration not possible");
 118         else if (strcmp(i->reason, "3RDPARTY") == 0)
 119                 reason = _("Waiting for 3rd Party configuration");
 120
 121         if (reason == NULL)
 122                 reason = i->reason;
 123
 124         len = strlen(i->ifname) + 3;
 125         len += strlen(reason) + 1;
 126         if (i->ip.s_addr != 0) {
 127                 len += 16; /* 000. * 4 */
 128                 if (i->cidr != 0)
 129                         len += 3; /* /32 */
 130         }
 131         if (showssid)
 132                 len += strlen(i->ssid) + 1;
 133         msg = p = malloc(len);
 134         p += snprintf(msg, len, "%s: %s", i->ifname, reason);
 135         if (showssid)
 136                 p += snprintf(p, len - (p - msg), " %s", i->ssid);
 137         if (i->ip.s_addr != 0 && showip) {
 138                 p += snprintf(p, len - (p - msg), " %s", inet_ntoa(i->ip));
 139                 if (i->cidr != 0)
 140                         snprintf(p, len - (p - msg), "/%d", i->cidr);
 141         }
 142         return msg;
 143 }