static int create_provider(struct connection_data *data, void *user_data)
{
struct connman_provider_driver *driver = user_data;
int err;
DBG("%s", data->path);
data->provider = connman_provider_get(data->ident);
if (data->provider == NULL)
return -ENOMEM;
DBG("provider %p name %s", data->provider, data->name);
connman_provider_set_data(data->provider, data);
connman_provider_set_driver(data->provider, driver);
err = connman_provider_create_service(data->provider);
if (err == 0) {
if (g_str_equal(data->state, "ready") == TRUE) {
connman_provider_set_index(data->provider,
data->index);
if (data->ip != NULL)
connman_provider_set_ipaddress(data->provider,
data->ip);
}
set_provider_state(data);
}
return 0;
}
void vpn_died(struct connman_task *task, int exit_code, void *user_data)
{
struct connman_provider *provider = user_data;
struct vpn_data *data = connman_provider_get_data(provider);
int state = VPN_STATE_FAILURE;
enum connman_provider_error ret;
DBG("provider %p data %p", provider, data);
if (data == NULL)
goto vpn_exit;
state = data->state;
stop_vpn(provider);
connman_provider_set_data(provider, NULL);
connman_rtnl_remove_watch(data->watch);
vpn_exit:
if (state != VPN_STATE_READY && state != VPN_STATE_DISCONNECT) {
const char *name;
struct vpn_driver_data *vpn_data = NULL;
name = connman_provider_get_driver_name(provider);
if (name != NULL)
vpn_data = g_hash_table_lookup(driver_hash, name);
if (vpn_data != NULL &&
vpn_data->vpn_driver->error_code != NULL)
ret = vpn_data->vpn_driver->error_code(exit_code);
else
ret = CONNMAN_PROVIDER_ERROR_UNKNOWN;
connman_provider_indicate_error(provider, ret);
} else
connman_provider_set_state(provider,
CONNMAN_PROVIDER_STATE_IDLE);
connman_provider_set_index(provider, -1);
connman_provider_unref(data->provider);
g_free(data->if_name);
g_free(data);
connman_task_destroy(task);
}
int vpn_set_ifname(struct connman_provider *provider, const char *ifname)
{
struct vpn_data *data = connman_provider_get_data(provider);
int index;
if (ifname == NULL || data == NULL)
return -EIO;
index = connman_inet_ifindex(ifname);
if (index < 0)
return -EIO;
if (data->if_name != NULL)
g_free(data->if_name);
data->if_name = (char *)g_strdup(ifname);
connman_provider_set_index(provider, index);
return 0;
}
static int vpn_connect(struct connman_provider *provider)
{
struct vpn_data *data = connman_provider_get_data(provider);
struct vpn_driver_data *vpn_driver_data;
const char *name;
int ret = 0;
if (data != NULL)
return -EISCONN;
data = g_try_new0(struct vpn_data, 1);
if (data == NULL)
return -ENOMEM;
data->provider = connman_provider_ref(provider);
data->watch = 0;
data->flags = 0;
data->task = NULL;
data->state = VPN_STATE_IDLE;
connman_provider_set_data(provider, data);
name = connman_provider_get_driver_name(provider);
if (name == NULL)
return -EINVAL;
vpn_driver_data = g_hash_table_lookup(driver_hash, name);
if (vpn_driver_data != NULL && vpn_driver_data->vpn_driver != NULL &&
vpn_driver_data->vpn_driver->flags != VPN_FLAG_NO_TUN) {
ret = vpn_create_tun(provider);
if (ret < 0)
goto exist_err;
}
data->task = connman_task_create(vpn_driver_data->program);
if (data->task == NULL) {
ret = -ENOMEM;
stop_vpn(provider);
goto exist_err;
}
if (connman_task_set_notify(data->task, "notify",
vpn_notify, provider)) {
ret = -ENOMEM;
stop_vpn(provider);
connman_task_destroy(data->task);
data->task = NULL;
goto exist_err;
}
ret = vpn_driver_data->vpn_driver->connect(provider, data->task,
data->if_name);
if (ret < 0) {
stop_vpn(provider);
connman_task_destroy(data->task);
data->task = NULL;
goto exist_err;
}
DBG("%s started with dev %s",
vpn_driver_data->provider_driver.name, data->if_name);
data->state = VPN_STATE_CONNECT;
return -EINPROGRESS;
exist_err:
connman_provider_set_index(provider, -1);
connman_provider_set_data(provider, NULL);
connman_provider_unref(data->provider);
g_free(data->if_name);
g_free(data);
return ret;
}
static int vpn_create_tun(struct connman_provider *provider)
{
struct vpn_data *data = connman_provider_get_data(provider);
struct ifreq ifr;
int i, fd, index;
int ret = 0;
if (data == NULL)
return -EISCONN;
fd = open("/dev/net/tun", O_RDWR | O_CLOEXEC);
if (fd < 0) {
i = -errno;
connman_error("Failed to open /dev/net/tun: %s",
strerror(errno));
ret = i;
goto exist_err;
}
memset(&ifr, 0, sizeof(ifr));
ifr.ifr_flags = IFF_TUN | IFF_NO_PI;
for (i = 0; i < 256; i++) {
sprintf(ifr.ifr_name, "vpn%d", i);
if (!ioctl(fd, TUNSETIFF, (void *)&ifr))
break;
}
if (i == 256) {
connman_error("Failed to find available tun device");
close(fd);
ret = -ENODEV;
goto exist_err;
}
data->if_name = (char *)g_strdup(ifr.ifr_name);
if (data->if_name == NULL) {
connman_error("Failed to allocate memory");
close(fd);
ret = -ENOMEM;
goto exist_err;
}
if (ioctl(fd, TUNSETPERSIST, 1)) {
i = -errno;
connman_error("Failed to set tun persistent: %s",
strerror(errno));
close(fd);
ret = i;
goto exist_err;
}
close(fd);
index = connman_inet_ifindex(data->if_name);
if (index < 0) {
connman_error("Failed to get tun ifindex");
stop_vpn(provider);
ret = -EIO;
goto exist_err;
}
connman_provider_set_index(provider, index);
return 0;
exist_err:
return ret;
}
