*
* ConnMan VPN daemon
*
- * Copyright (C) 2007-2012 Intel Corporation. All rights reserved.
+ * Copyright (C) 2007-2013 Intel Corporation. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
char *if_name;
unsigned flags;
unsigned int watch;
- unsigned int state;
+ enum vpn_state state;
struct connman_task *task;
+ int tun_flags;
};
struct vpn_driver_data {
struct ifreq ifr;
int fd, err;
- if (data == NULL)
+ if (!data)
return -EINVAL;
name = vpn_provider_get_driver_name(provider);
- if (name == NULL)
+ if (!name)
return -EINVAL;
vpn_driver_data = g_hash_table_lookup(driver_hash, name);
- if (vpn_driver_data != NULL && vpn_driver_data->vpn_driver != NULL &&
+ if (vpn_driver_data && vpn_driver_data->vpn_driver &&
vpn_driver_data->vpn_driver->flags == VPN_FLAG_NO_TUN)
return 0;
memset(&ifr, 0, sizeof(ifr));
- ifr.ifr_flags = IFF_TUN | IFF_NO_PI;
+ ifr.ifr_flags = data->tun_flags | IFF_NO_PI;
sprintf(ifr.ifr_name, "%s", data->if_name);
fd = open("/dev/net/tun", O_RDWR | O_CLOEXEC);
DBG("provider %p data %p", provider, data);
- if (data == NULL)
+ if (!data)
goto vpn_exit;
state = data->state;
vpn_provider_set_data(provider, NULL);
if (data->watch != 0) {
- vpn_provider_unref(provider);
vpn_rtnl_remove_watch(data->watch);
data->watch = 0;
+ vpn_provider_unref(provider);
}
vpn_exit:
struct vpn_driver_data *vpn_data = NULL;
name = vpn_provider_get_driver_name(provider);
- if (name != NULL)
+ if (name)
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);
+ if (vpn_data &&
+ vpn_data->vpn_driver->error_code)
+ ret = vpn_data->vpn_driver->error_code(provider,
+ exit_code);
else
ret = VPN_PROVIDER_ERROR_UNKNOWN;
vpn_provider_indicate_error(provider, ret);
-
- vpn_provider_set_state(provider, VPN_PROVIDER_STATE_FAILURE);
} else
vpn_provider_set_state(provider, VPN_PROVIDER_STATE_IDLE);
vpn_provider_set_index(provider, -1);
- if (data != NULL) {
+ if (data) {
vpn_provider_unref(data->provider);
g_free(data->if_name);
g_free(data);
struct vpn_data *data = vpn_provider_get_data(provider);
int index;
- if (ifname == NULL || data == NULL)
+ if (!ifname || !data)
return -EIO;
index = connman_inet_ifindex(ifname);
if (index < 0)
return -EIO;
- if (data->if_name != NULL)
+ if (data->if_name)
g_free(data->if_name);
data->if_name = (char *)g_strdup(ifname);
return 0;
}
+static int vpn_set_state(struct vpn_provider *provider,
+ enum vpn_provider_state state)
+{
+ struct vpn_data *data = vpn_provider_get_data(provider);
+ if (!data)
+ return -EINVAL;
+
+ switch (state) {
+ case VPN_PROVIDER_STATE_UNKNOWN:
+ return -EINVAL;
+ case VPN_PROVIDER_STATE_IDLE:
+ data->state = VPN_STATE_IDLE;
+ break;
+ case VPN_PROVIDER_STATE_CONNECT:
+ case VPN_PROVIDER_STATE_READY:
+ data->state = VPN_STATE_CONNECT;
+ break;
+ case VPN_PROVIDER_STATE_DISCONNECT:
+ data->state = VPN_STATE_DISCONNECT;
+ break;
+ case VPN_PROVIDER_STATE_FAILURE:
+ data->state = VPN_STATE_FAILURE;
+ break;
+ }
+
+ return 0;
+}
+
static void vpn_newlink(unsigned flags, unsigned change, void *user_data)
{
struct vpn_provider *provider = user_data;
name = vpn_provider_get_driver_name(provider);
- if (name == NULL) {
+ if (!name) {
DBG("Cannot find VPN driver for provider %p", provider);
vpn_provider_set_state(provider, VPN_PROVIDER_STATE_FAILURE);
return NULL;
}
vpn_driver_data = g_hash_table_lookup(driver_hash, name);
- if (vpn_driver_data == NULL) {
+ if (!vpn_driver_data) {
DBG("Cannot find VPN driver data for name %s", name);
vpn_provider_set_state(provider, VPN_PROVIDER_STATE_FAILURE);
return NULL;
switch (state) {
case VPN_STATE_CONNECT:
case VPN_STATE_READY:
+ if (data->state == VPN_STATE_READY) {
+ /*
+ * This is the restart case, in which case we must
+ * just set the IP address.
+ *
+ * We need to remove first the old address, just
+ * replacing the old address will not work as expected
+ * because the old address will linger in the interface
+ * and not disapper so the clearing is needed here.
+ *
+ * Also the state must change, otherwise the routes
+ * will not be set properly.
+ */
+ vpn_provider_set_state(provider,
+ VPN_PROVIDER_STATE_CONNECT);
+
+ vpn_provider_clear_address(provider, AF_INET);
+ vpn_provider_clear_address(provider, AF_INET6);
+
+ vpn_provider_change_address(provider);
+ vpn_provider_set_state(provider,
+ VPN_PROVIDER_STATE_READY);
+ break;
+ }
+
index = vpn_provider_get_index(provider);
vpn_provider_ref(provider);
data->watch = vpn_rtnl_add_newlink_watch(index,
return NULL;
}
-static int vpn_create_tun(struct vpn_provider *provider)
+static int vpn_create_tun(struct vpn_provider *provider, int flags)
{
struct vpn_data *data = vpn_provider_get_data(provider);
struct ifreq ifr;
int i, fd, index;
int ret = 0;
- if (data == NULL)
+ if (!data)
return -EISCONN;
fd = open("/dev/net/tun", O_RDWR | O_CLOEXEC);
}
memset(&ifr, 0, sizeof(ifr));
- ifr.ifr_flags = IFF_TUN | IFF_NO_PI;
+ ifr.ifr_flags = flags | IFF_NO_PI;
for (i = 0; i < 256; i++) {
sprintf(ifr.ifr_name, "vpn%d", i);
goto exist_err;
}
+ data->tun_flags = flags;
data->if_name = (char *)g_strdup(ifr.ifr_name);
- if (data->if_name == NULL) {
+ if (!data->if_name) {
connman_error("Failed to allocate memory");
close(fd);
ret = -ENOMEM;
}
static int vpn_connect(struct vpn_provider *provider,
- vpn_provider_connect_cb_t cb, void *user_data)
+ vpn_provider_connect_cb_t cb,
+ const char *dbus_sender, void *user_data)
{
struct vpn_data *data = vpn_provider_get_data(provider);
struct vpn_driver_data *vpn_driver_data;
const char *name;
- int ret = 0;
+ int ret = 0, tun_flags = IFF_TUN;
+ enum vpn_state state = VPN_STATE_UNKNOWN;
- if (data != NULL)
- return -EISCONN;
+ if (data)
+ state = data->state;
- data = g_try_new0(struct vpn_data, 1);
- if (data == NULL)
- return -ENOMEM;
+ DBG("data %p state %d", data, state);
+
+ switch (state) {
+ case VPN_STATE_UNKNOWN:
+ data = g_try_new0(struct vpn_data, 1);
+ if (!data)
+ return -ENOMEM;
- data->provider = vpn_provider_ref(provider);
- data->watch = 0;
- data->flags = 0;
- data->task = NULL;
- data->state = VPN_STATE_IDLE;
+ data->provider = vpn_provider_ref(provider);
+ data->watch = 0;
+ data->flags = 0;
+ data->task = NULL;
- vpn_provider_set_data(provider, data);
+ vpn_provider_set_data(provider, data);
+ /* fall through */
+
+ case VPN_STATE_DISCONNECT:
+ case VPN_STATE_IDLE:
+ case VPN_STATE_FAILURE:
+ case VPN_STATE_AUTH_FAILURE:
+ data->state = VPN_STATE_IDLE;
+ break;
+
+ case VPN_STATE_CONNECT:
+ return -EINPROGRESS;
+
+ case VPN_STATE_READY:
+ return -EISCONN;
+ }
name = vpn_provider_get_driver_name(provider);
- if (name == NULL)
+ if (!name)
return -EINVAL;
vpn_driver_data = g_hash_table_lookup(driver_hash, name);
- if (vpn_driver_data == NULL || vpn_driver_data->vpn_driver == NULL) {
+ if (!vpn_driver_data || !vpn_driver_data->vpn_driver) {
ret = -EINVAL;
goto exist_err;
}
if (vpn_driver_data->vpn_driver->flags != VPN_FLAG_NO_TUN) {
- ret = vpn_create_tun(provider);
+ if (vpn_driver_data->vpn_driver->device_flags) {
+ tun_flags = vpn_driver_data->vpn_driver->device_flags(provider);
+ }
+ ret = vpn_create_tun(provider, tun_flags);
if (ret < 0)
goto exist_err;
}
data->task = connman_task_create(vpn_driver_data->program);
- if (data->task == NULL) {
+ if (!data->task) {
ret = -ENOMEM;
stop_vpn(provider);
goto exist_err;
}
ret = vpn_driver_data->vpn_driver->connect(provider, data->task,
- data->if_name, cb, user_data);
+ data->if_name, cb, dbus_sender,
+ user_data);
if (ret < 0 && ret != -EINPROGRESS) {
stop_vpn(provider);
connman_task_destroy(data->task);
DBG("disconnect provider %p:", provider);
- if (data == NULL)
+ if (!data)
return 0;
name = vpn_provider_get_driver_name(provider);
- if (name == NULL)
+ if (!name)
return 0;
vpn_driver_data = g_hash_table_lookup(driver_hash, name);
struct vpn_data *data;
data = vpn_provider_get_data(provider);
- if (data == NULL)
+ if (!data)
return 0;
if (data->watch != 0) {
name = vpn_provider_get_driver_name(provider);
vpn_driver_data = g_hash_table_lookup(driver_hash, name);
- if (vpn_driver_data != NULL &&
- vpn_driver_data->vpn_driver->save != NULL)
+ if (vpn_driver_data &&
+ vpn_driver_data->vpn_driver->save)
return vpn_driver_data->vpn_driver->save(provider, keyfile);
return 0;
struct vpn_driver_data *data;
data = g_try_new0(struct vpn_driver_data, 1);
- if (data == NULL)
+ if (!data)
return -ENOMEM;
data->name = name;
data->provider_driver.probe = vpn_probe;
data->provider_driver.remove = vpn_remove;
data->provider_driver.save = vpn_save;
+ data->provider_driver.set_state = vpn_set_state;
- if (driver_hash == NULL)
+ if (!driver_hash)
driver_hash = g_hash_table_new_full(g_str_hash,
g_str_equal,
NULL, g_free);
- if (driver_hash == NULL) {
+ if (!driver_hash) {
connman_error("driver_hash not initialized for %s", name);
g_free(data);
return -ENOMEM;
struct vpn_driver_data *data;
data = g_hash_table_lookup(driver_hash, name);
- if (data == NULL)
+ if (!data)
return;
vpn_provider_driver_unregister(&data->provider_driver);
projects / platform / upstream / connman.git / blobdiff