0037d8f4aac56a1da673d618e49f79c471a1378a
[dhcpcd-ui] / 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 <strings.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         NULL
50 };
51
52 static const char *const dhcpcd_down_reasons[] = {
53         "EXPIRE",
54         "FAIL",
55         "NAK",
56         "NOCARRIER",
57         "STOP",
58         NULL
59 };
60
61 bool
62 dhcpcd_if_up(const DHCPCD_IF *i)
63 {
64         const char *const *r;
65
66         for (r = dhcpcd_up_reasons; *r; r++)
67                 if (strcmp(*r, i->reason) == 0)
68                         return true;
69         return false;
70 }
71
72 bool
73 dhcpcd_if_down(const DHCPCD_IF *i)
74 {
75         const char *const *r;
76
77         for (r = dhcpcd_down_reasons; *r; r++)
78                 if (strcmp(*r, i->reason) == 0)
79                         return true;
80         return false;
81 }
82
83 char *
84 dhcpcd_if_message(const DHCPCD_IF *i)
85 {
86         char *msg, *p;
87         const char *reason = NULL;
88         size_t len;
89         bool showip, showssid;
90     
91         showip = true;
92         showssid = false;
93         if (dhcpcd_if_up(i))
94                 reason = _("Acquired address");
95         else if (strcmp(i->reason, "EXPIRE") == 0)
96                 reason = _("Expired");
97         else if (strcmp(i->reason, "CARRIER") == 0) {
98                 if (i->wireless) {
99                         reason = _("Associated with");
100                         if (i->ssid != NULL)
101                                 showssid = true;
102                 } else
103                         reason = _("Cable plugged in");
104                 showip = false;
105         } else if (strcmp(i->reason, "NOCARRIER") == 0) {
106                 if (i->wireless) {
107                         if (i->ssid != NULL || i->ip.s_addr != 0) {
108                                 reason = _("Disassociated from");
109                                 showssid = true;
110                         } else
111                                 reason = _("Not associated");
112                 } else
113                         reason = _("Cable unplugged");
114                 showip = false;
115         } else if (strcmp(i->reason, "FAIL") == 0)
116                 reason = _("Automatic configuration not possible");
117         else if (strcmp(i->reason, "3RDPARTY") == 0)
118                 reason = _("Waiting for 3rd Party configuration");
119
120         if (reason == NULL)
121                 reason = i->reason;
122         
123         len = strlen(i->ifname) + 3;
124         len += strlen(reason) + 1;
125         if (i->ip.s_addr != 0) {
126                 len += 16; /* 000. * 4 */
127                 if (i->cidr != 0)
128                         len += 3; /* /32 */
129         }
130         if (showssid)
131                 len += strlen(i->ssid) + 1;
132         msg = p = malloc(len);
133         p += snprintf(msg, len, "%s: %s", i->ifname, reason);
134         if (showssid)
135                 p += snprintf(p, len - (p - msg), " %s", i->ssid);
136         if (i->ip.s_addr != 0 && showip) {
137                 p += snprintf(p, len - (p - msg), " %s", inet_ntoa(i->ip));
138                 if (i->cidr != 0)
139                         snprintf(p, len - (p - msg), "/%d", i->cidr);
140         }
141         return msg;
142 }