vcs.maemo.org Git - connman/blob - plugins/supplicant.c

   1 /*
   2  *
   3  *  Connection Manager
   4  *
   5  *  Copyright (C) 2007  Intel Corporation. All rights reserved.
   6  *
   7  *  This program is free software; you can redistribute it and/or modify
   8  *  it under the terms of the GNU General Public License version 2 as
   9  *  published by the Free Software Foundation.
  10  *
  11  *  This program is distributed in the hope that it will be useful,
  12  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  *  GNU General Public License for more details.
  15  *
  16  *  You should have received a copy of the GNU General Public License
  17  *  along with this program; if not, write to the Free Software
  18  *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  19  *
  20  */
  21
  22 #ifdef HAVE_CONFIG_H
  23 #include <config.h>
  24 #endif
  25
  26 #include <stdio.h>
  27 #include <errno.h>
  28 #include <unistd.h>
  29 #include <stdlib.h>
  30 #include <signal.h>
  31 #include <sys/ioctl.h>
  32 #include <sys/socket.h>
  33 #include <sys/un.h>
  34 #include <net/if.h>
  35
  36 #include <glib.h>
  37
  38 #include "supplicant.h"
  39
  40 struct supplicant_task {
  41         GPid pid;
  42         int ifindex;
  43         char *ifname;
  44         struct connman_iface *iface;
  45         int socket;
  46         GIOChannel *channel;
  47 };
  48
  49 static GSList *tasks = NULL;
  50
  51 static struct supplicant_task *find_task(int ifindex)
  52 {
  53         GSList *list;
  54
  55         for (list = tasks; list; list = list->next) {
  56                 struct supplicant_task *task = list->data;
  57
  58                 if (task->ifindex == ifindex)
  59                         return task;
  60         }
  61
  62         return NULL;
  63 }
  64
  65 static int exec_cmd(struct supplicant_task *task, char *cmd)
  66 {
  67         return write(task->socket, cmd, strlen(cmd));
  68 }
  69
  70 static gboolean control_event(GIOChannel *chan,
  71                                 GIOCondition cond, gpointer data)
  72 {
  73         struct supplicant_task *task = data;
  74         char buf[256];
  75         gsize len;
  76         GIOError err;
  77
  78         if (cond & (G_IO_NVAL | G_IO_HUP | G_IO_ERR))
  79                 return FALSE;
  80
  81         memset(buf, 0, sizeof(buf));
  82
  83         err = g_io_channel_read(chan, buf, sizeof(buf), &len);
  84         if (err) {
  85                 if (err == G_IO_ERROR_AGAIN)
  86                         return TRUE;
  87                 return FALSE;
  88         }
  89
  90         if (buf[0] != '<')
  91                 return TRUE;
  92
  93         printf("[SUPPLICANT] %s\n", buf + 3);
  94
  95         if (g_str_has_prefix(buf + 3, "CTRL-EVENT-CONNECTED") == TRUE) {
  96                 printf("[SUPPLICANT] connected\n");
  97                 connman_iface_indicate_connected(task->iface);
  98         }
  99
 100         if (g_str_has_prefix(buf + 3, "CTRL-EVENT-DISCONNECTED") == TRUE) {
 101                 printf("[SUPPLICANT] disconnected\n");
 102         }
 103
 104         if (g_str_has_prefix(buf + 3, "CTRL-EVENT-TERMINATING") == TRUE) {
 105                 printf("[SUPPLICANT] terminating\n");
 106         }
 107
 108         return TRUE;
 109 }
 110
 111 static int open_control(struct supplicant_task *task)
 112 {
 113         struct sockaddr_un addr;
 114         int sk;
 115
 116         printf("[SUPPLICANT] open control for %s\n", task->ifname);
 117
 118         sk = socket(PF_UNIX, SOCK_DGRAM, 0);
 119         if (sk < 0)
 120                 return -1;
 121
 122         memset(&addr, 0, sizeof(addr));
 123         addr.sun_family = AF_UNIX;
 124         snprintf(addr.sun_path, sizeof(addr.sun_path),
 125                                         "%s/%s.cli", STATEDIR, task->ifname);
 126         //unlink(addr.sun_path);
 127
 128         if (bind(sk, (struct sockaddr *) &addr, sizeof(addr)) < 0) {
 129                 close(sk);
 130                 return -1;
 131         }
 132
 133         memset(&addr, 0, sizeof(addr));
 134         addr.sun_family = AF_UNIX;
 135         snprintf(addr.sun_path, sizeof(addr.sun_path),
 136                                         "%s/%s", STATEDIR, task->ifname);
 137
 138         if (connect(sk, (struct sockaddr *) &addr, sizeof(addr)) < 0) {
 139                 close(sk);
 140                 return -1;
 141         }
 142
 143         task->socket = sk;
 144
 145         task->channel = g_io_channel_unix_new(sk);
 146         g_io_channel_set_close_on_unref(task->channel, TRUE);
 147
 148         g_io_add_watch(task->channel,
 149                         G_IO_IN | G_IO_NVAL | G_IO_HUP | G_IO_ERR,
 150                                                 control_event, task);
 151
 152         exec_cmd(task, "ATTACH");
 153         exec_cmd(task, "ADD_NETWORK");
 154
 155         return 0;
 156 }
 157
 158 int __supplicant_start(struct connman_iface *iface)
 159 {
 160         struct ifreq ifr;
 161         struct supplicant_task *task;
 162         char *argv[9];
 163         int sk, err;
 164
 165         sk = socket(PF_INET, SOCK_DGRAM, 0);
 166         if (sk < 0)
 167                 return -EIO;
 168
 169         memset(&ifr, 0, sizeof(ifr));
 170         ifr.ifr_ifindex = iface->index;
 171
 172         err = ioctl(sk, SIOCGIFNAME, &ifr);
 173
 174         close(sk);
 175
 176         if (err < 0)
 177                 return -EIO;
 178
 179         printf("[SUPPLICANT] start %s\n", ifr.ifr_name);
 180
 181         task = g_try_new0(struct supplicant_task, 1);
 182         if (task == NULL)
 183                 return -ENOMEM;
 184
 185         task->ifindex = iface->index;
 186         task->ifname = strdup(ifr.ifr_name);
 187         task->iface = iface;
 188
 189         if (task->ifname == NULL) {
 190                 g_free(task);
 191                 return -ENOMEM;
 192         }
 193
 194         argv[0] = "/sbin/wpa_supplicant";
 195         argv[1] = "-qq";
 196         argv[2] = "-C";
 197         argv[3] = STATEDIR;
 198         argv[4] = "-D";
 199         argv[5] = "wext";
 200         argv[6] = "-i";
 201         argv[7] = task->ifname;
 202         argv[8] = NULL;
 203
 204         if (g_spawn_async(NULL, argv, NULL, G_SPAWN_DO_NOT_REAP_CHILD,
 205                                 NULL, NULL, &task->pid, NULL) == FALSE) {
 206                 printf("Failed to spawn wpa_supplicant\n");
 207                 return -1;
 208         }
 209
 210         tasks = g_slist_append(tasks, task);
 211
 212         printf("[SUPPLICANT] executed with pid %d\n", task->pid);
 213
 214         sleep(1);
 215
 216         task->socket = -1;
 217
 218         if (open_control(task) < 0)
 219                 printf("[SUPPLICANT] control failed\n");
 220
 221         return 0;
 222 }
 223
 224 int __supplicant_stop(struct connman_iface *iface)
 225 {
 226         struct supplicant_task *task;
 227         char pathname[PATH_MAX];
 228
 229         task = find_task(iface->index);
 230         if (task == NULL)
 231                 return -ENODEV;
 232
 233         printf("[SUPPLICANT] stop %s\n", task->ifname);
 234
 235         tasks = g_slist_remove(tasks, task);
 236
 237         exec_cmd(task, "DISABLE_NETWORK 0");
 238         exec_cmd(task, "DETACH");
 239
 240         sleep(1);
 241
 242         kill(task->pid, SIGTERM);
 243
 244         g_io_channel_shutdown(task->channel, TRUE, NULL);
 245         g_io_channel_unref(task->channel);
 246
 247         snprintf(pathname, sizeof(pathname),
 248                                         "%s/%s.cli", STATEDIR, task->ifname);
 249         unlink(pathname);
 250
 251         free(task->ifname);
 252
 253         g_free(task);
 254
 255         return 0;
 256 }
 257
 258 int __supplicant_connect(struct connman_iface *iface,
 259                                 const char *network, const char *passphrase)
 260 {
 261         struct supplicant_task *task;
 262         char cmd[128];
 263
 264         task = find_task(iface->index);
 265         if (task == NULL)
 266                 return -ENODEV;
 267
 268         printf("[SUPPLICANT] connect %s\n", task->ifname);
 269
 270         exec_cmd(task, "DISABLE_NETWORK 0");
 271
 272         sprintf(cmd, "SET_NETWORK 0 ssid \"%s\"", network);
 273         exec_cmd(task, cmd);
 274
 275         if (passphrase && strlen(passphrase) > 0) {
 276                 exec_cmd(task, "SET_NETWORK 0 proto RSN WPA");
 277                 exec_cmd(task, "SET_NETWORK 0 key_mgmt WPA-PSK");
 278
 279                 sprintf(cmd, "SET_NETWORK 0 psk \"%s\"", passphrase);
 280                 exec_cmd(task, cmd);
 281         } else {
 282                 exec_cmd(task, "SET_NETWORK 0 proto RSN WPA");
 283                 exec_cmd(task, "SET_NETWORK 0 key_mgmt NONE");
 284         }
 285
 286         exec_cmd(task, "ENABLE_NETWORK 0");
 287
 288         return 0;
 289 }