3 * Copyright 2009-2014 Roy Marples <roy@marples.name>
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
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.
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
31 #include <netinet/in.h>
40 #define DHCPCD_SOCKET "/var/run/dhcpcd.sock"
42 #ifndef DHCPCD_UNPRIV_SOCKET
43 #define DHCPCD_UNPRIV_SOCKET "/var/run/dhcpcd.unpriv.sock"
47 #define WPA_CTRL_DIR "/var/run/wpa_supplicant"
50 #define DHCPCD_RETRYOPEN 100 /* milliseconds */
51 #define DHCPCD_WI_HIST_MAX 10 /* Recall 10 scans for averages */
53 /* Each non printable byte of the SSID is represented as \000 */
54 #define IF_SSIDSIZE ((32 * 4) + 1)
55 #define IF_BSSIDSIZE 64
60 typedef struct dhcpcd_wi_avs {
65 typedef struct dhcpcd_wi_scan {
66 struct dhcpcd_wi_scan *next;
67 char bssid[IF_BSSIDSIZE];
72 DHCPCD_WI_AV strength;
73 char ssid[IF_SSIDSIZE];
78 typedef struct dhcpcd_if {
79 struct dhcpcd_if *next;
94 struct dhcpcd_connection *con;
97 typedef struct dhcpcd_if {
98 struct dhcpcd_if *next;
110 typedef struct dhcpcd_config {
111 struct dhcpcd_config *next;
117 typedef struct dhcpcd_wi_hist {
118 struct dhcpcd_wi_hist *next;
119 char ifname[IF_NAMESIZE];
120 char bssid[IF_BSSIDSIZE];
127 typedef struct dhcpcd_wpa {
128 struct dhcpcd_wpa *next;
129 char ifname[IF_NAMESIZE];
136 struct dhcpcd_connection *con;
139 typedef struct dhcpcd_connection {
140 struct dhcpcd_connection *next;
146 DHCPCD_IF *interfaces;
148 DHCPCD_WI_HIST *wi_history;
150 void (*if_cb)(DHCPCD_IF *, void *);
152 void (*status_cb)(struct dhcpcd_connection *, const char *, void *);
153 void *status_context;
155 void (*wi_scanresults_cb)(DHCPCD_WPA *, void *);
156 void *wi_scanresults_context;
157 void (*wpa_status_cb)(DHCPCD_WPA *, const char *, void *);
158 void *wpa_status_context;
164 bool terminate_commands;
174 typedef void *DHCPCD_CONFIG;
175 typedef void *DHCPCD_WPA;
176 typedef void *DHCPCD_CONNECTION;
179 DHCPCD_CONNECTION * dhcpcd_new(void);
180 const char * dhcpcd_version(DHCPCD_CONNECTION *);
181 const char * dhcpcd_status(DHCPCD_CONNECTION *);
182 const char * dhcpcd_cffile(DHCPCD_CONNECTION *);
183 bool dhcpcd_realloc(DHCPCD_CONNECTION *, size_t);
184 int dhcpcd_open(DHCPCD_CONNECTION *, bool priv);
185 void dhcpcd_close(DHCPCD_CONNECTION *);
186 void dhcpcd_free(DHCPCD_CONNECTION *);
187 void dhcpcd_set_if_callback(DHCPCD_CONNECTION *,
188 void (*)(DHCPCD_IF *, void *), void *);
189 void dhcpcd_set_status_callback(DHCPCD_CONNECTION *,
190 void (*)(DHCPCD_CONNECTION *, const char *, void *), void *);
191 int dhcpcd_get_fd(DHCPCD_CONNECTION *);
192 bool dhcpcd_privileged(DHCPCD_CONNECTION *);
193 void dhcpcd_dispatch(DHCPCD_CONNECTION *);
194 DHCPCD_IF * dhcpcd_interfaces(DHCPCD_CONNECTION *);
195 DHCPCD_IF * dhcpcd_get_if(DHCPCD_CONNECTION *, const char *, const char *);
196 DHCPCD_CONNECTION * dhcpcd_if_connection(DHCPCD_IF *);
197 const char *dhcpcd_get_value(const DHCPCD_IF *, const char *);
198 const char *dhcpcd_get_prefix_value(const DHCPCD_IF *, const char *,
200 char * dhcpcd_if_message(DHCPCD_IF *i, bool *new_msg);
202 ssize_t dhcpcd_command(DHCPCD_CONNECTION *, const char *, char **);
203 ssize_t dhcpcd_command_arg(DHCPCD_CONNECTION *, const char *, const char *,
205 #define dhcpcd_rebind(c, i) dhcpcd_command_arg((c), "-n", (i), NULL)
206 #define dhcpcd_release(c, i) dhcpcd_command_arg((c), "-k", (i), NULL)
208 void dhcpcd_wpa_start(DHCPCD_CONNECTION *);
209 DHCPCD_WPA *dhcpcd_wpa_find(DHCPCD_CONNECTION *, const char *);
210 DHCPCD_WPA *dhcpcd_wpa_new(DHCPCD_CONNECTION *, const char *);
211 DHCPCD_CONNECTION *dhcpcd_wpa_connection(DHCPCD_WPA *);
212 int dhcpcd_wpa_open(DHCPCD_WPA *);
213 void dhcpcd_wpa_close(DHCPCD_WPA *);
214 void dhcpcd_wpa_dispatch(DHCPCD_WPA *);
215 int dhcpcd_wpa_get_fd(DHCPCD_WPA *);
216 DHCPCD_IF *dhcpcd_wpa_if(DHCPCD_WPA *);
217 void dhcpcd_wpa_if_event(DHCPCD_IF *);
218 void dhcpcd_wpa_set_scan_callback(DHCPCD_CONNECTION *,
219 void (*)(DHCPCD_WPA *, void *), void *);
220 void dhcpcd_wpa_set_status_callback(DHCPCD_CONNECTION *,
221 void (*)(DHCPCD_WPA *, const char *, void *), void *);
222 DHCPCD_WI_SCAN * dhcpcd_wi_scans(DHCPCD_IF *);
223 void dhcpcd_wi_scans_free(DHCPCD_WI_SCAN *);
224 void dhcpcd_wi_history_clear(DHCPCD_CONNECTION *);
225 bool dhcpcd_wpa_set_network(DHCPCD_WPA *, int, const char *, const char *);
226 int dhcpcd_wpa_find_network_new(DHCPCD_WPA *, const char *);
227 bool dhcpcd_wpa_command(DHCPCD_WPA *, const char *);
228 bool dhcpcd_wpa_command_arg(DHCPCD_WPA *, const char *, const char *);
230 bool dhcpcd_wpa_scan(DHCPCD_WPA *);
231 bool dhcpcd_wpa_reassociate(DHCPCD_WPA *);
232 bool dhcpcd_wpa_disconnect(DHCPCD_WPA *);
233 bool dhcpcd_wpa_config_write(DHCPCD_WPA *);
234 int dhcpcd_wpa_network_find_new(DHCPCD_WPA *, const char *);
235 bool dhcpcd_wpa_network_disable(DHCPCD_WPA *, int);
236 bool dhcpcd_wpa_network_enable(DHCPCD_WPA *, int);
237 bool dhcpcd_wpa_network_remove(DHCPCD_WPA *, int);
238 char * dhcpcd_wpa_network_get(DHCPCD_WPA *, int, const char *);
239 bool dhcpcd_wpa_network_set(DHCPCD_WPA *, int, const char *, const char *);
241 #define DHCPCD_WPA_SUCCESS 0
242 #define DHCPCD_WPA_ERR -1
243 #define DHCPCD_WPA_ERR_SET -2
244 #define DHCPCD_WPA_ERR_SET_PSK -3
245 #define DHCPCD_WPA_ERR_ENABLE -4
246 #define DHCPCD_WPA_ERR_WRITE -5
247 #define DHCPCD_WPA_ERR_ASSOC -6
248 int dhcpcd_wpa_configure_psk(DHCPCD_WPA *w, DHCPCD_WI_SCAN *s, const char *p);
250 char ** dhcpcd_config_blocks(DHCPCD_CONNECTION *, const char *);
251 DHCPCD_OPTION *dhcpcd_config_read(DHCPCD_CONNECTION *,
252 const char *, const char *);
253 void dhcpcd_config_free(DHCPCD_OPTION *);
254 const char * dhcpcd_config_get(DHCPCD_OPTION *, const char *);
255 const char * dhcpcd_config_get_static(DHCPCD_OPTION *, const char *);
256 bool dhcpcd_config_set(DHCPCD_OPTION **, const char *, const char *);
257 bool dhcpcd_config_set_static(DHCPCD_OPTION **, const char *, const char *);
258 bool dhcpcd_config_write(DHCPCD_CONNECTION *,
259 const char *, const char *, const DHCPCD_OPTION *);