*
* Connection Manager
*
- * Copyright (C) 2007-2012 Intel Corporation. All rights reserved.
+ * Copyright (C) 2007-2013 Intel Corporation. All rights reserved.
* Copyright (C) 2011 ProFUSION embedded systems
*
* This program is free software; you can redistribute it and/or modify
#endif
#define BRIDGE_NAME "tether"
-#define BRIDGE_DNS "8.8.8.8"
#define DEFAULT_MTU 1500
-#define PRIVATE_NETWORK_PRIMARY_DNS BRIDGE_DNS
-#define PRIVATE_NETWORK_SECONDARY_DNS "8.8.4.4"
+#define CONNMAN_STATION_STR_INFO_LEN 64
+#define CONNMAN_STATION_MAC_INFO_LEN 32
+
+static char *private_network_primary_dns = NULL;
+static char *private_network_secondary_dns = NULL;
static volatile int tethering_enabled;
static GDHCPServer *tethering_dhcp_server = NULL;
static struct connman_ippool *dhcp_ippool = NULL;
static DBusConnection *connection;
static GHashTable *pn_hash;
+static GHashTable *sta_hash;
struct connman_private_network {
char *owner;
int index;
guint iface_watch;
struct connman_ippool *pool;
- const char *primary_dns;
- const char *secondary_dns;
+ char *primary_dns;
+ char *secondary_dns;
+};
+
+struct connman_station_info {
+ bool is_connected;
+ char *path;
+ char *type;
+ char ip[CONNMAN_STATION_STR_INFO_LEN];
+ char mac[CONNMAN_STATION_MAC_INFO_LEN];
+ char hostname[CONNMAN_STATION_STR_INFO_LEN];
};
+static void emit_station_signal(char *action_str,
+ const struct connman_station_info *station_info)
+{
+ char *ip, *mac, *hostname;
+
+ if (station_info->path == NULL || station_info->type == NULL
+ || station_info->ip == NULL || station_info->mac == NULL
+ || station_info->hostname == NULL)
+ return;
+
+ ip = g_strdup(station_info->ip);
+ mac = g_strdup(station_info->mac);
+ hostname = g_strdup(station_info->hostname);
+
+ g_dbus_emit_signal(connection, station_info->path,
+ CONNMAN_TECHNOLOGY_INTERFACE, action_str,
+ DBUS_TYPE_STRING, &station_info->type,
+ DBUS_TYPE_STRING, &ip,
+ DBUS_TYPE_STRING, &mac,
+ DBUS_TYPE_STRING, &hostname,
+ DBUS_TYPE_INVALID);
+
+ g_free(ip);
+ g_free(mac);
+ g_free(hostname);
+}
+static void destroy_station(gpointer key, gpointer value, gpointer user_data)
+{
+ struct connman_station_info *station_info;
+
+ __sync_synchronize();
+
+ station_info = value;
+
+ if (station_info->is_connected) {
+ station_info->is_connected = FALSE;
+ emit_station_signal("DhcpLeaseDeleted", station_info);
+ }
+
+ g_free(station_info->path);
+ g_free(station_info->type);
+ g_free(station_info);
+}
+
+static void save_dhcp_ack_lease_info(char *hostname,
+ unsigned char *mac, unsigned int nip)
+{
+ char *lower_mac;
+ const char *ip;
+ char sta_mac[CONNMAN_STATION_MAC_INFO_LEN];
+ struct connman_station_info *info_found;
+ struct in_addr addr;
+ int str_len;
+
+ __sync_synchronize();
+
+ snprintf(sta_mac, CONNMAN_STATION_MAC_INFO_LEN,
+ "%02x:%02x:%02x:%02x:%02x:%02x",
+ mac[0], mac[1], mac[2], mac[3], mac[4], mac[5]);
+ lower_mac = g_ascii_strdown(sta_mac, -1);
+
+ info_found = g_hash_table_lookup(sta_hash, lower_mac);
+ if (info_found == NULL) {
+ g_free(lower_mac);
+ return;
+ }
+
+ /* get the ip */
+ addr.s_addr = nip;
+ ip = inet_ntoa(addr);
+ str_len = strlen(ip) + 1;
+ if (str_len > CONNMAN_STATION_STR_INFO_LEN)
+ str_len = CONNMAN_STATION_STR_INFO_LEN - 1;
+ memcpy(info_found->ip, ip, str_len);
+
+ /* get hostname */
+ str_len = strlen(hostname) + 1;
+ if (str_len > CONNMAN_STATION_STR_INFO_LEN)
+ str_len = CONNMAN_STATION_STR_INFO_LEN - 1;
+ memcpy(info_found->hostname, hostname, str_len);
+
+ /* emit a signal */
+ info_found->is_connected = TRUE;
+ emit_station_signal("DhcpConnected", info_found);
+ g_free(lower_mac);
+}
+
+int connman_technology_tethering_add_station(enum connman_service_type type,
+ const char *mac)
+{
+ const char *str_type;
+ char *lower_mac;
+ char *path;
+ struct connman_station_info *station_info;
+
+ __sync_synchronize();
+
+ DBG("type %d", type);
+
+ str_type = __connman_service_type2string(type);
+ if (str_type == NULL)
+ return 0;
+
+ path = g_strdup_printf("%s/technology/%s", CONNMAN_PATH, str_type);
+
+ station_info = g_try_new0(struct connman_station_info, 1);
+ if (station_info == NULL)
+ return -ENOMEM;
+
+ lower_mac = g_ascii_strdown(mac, -1);
+
+ memcpy(station_info->mac, lower_mac, strlen(lower_mac) + 1);
+ station_info->path = path;
+ station_info->type = g_strdup(str_type);
+
+ g_hash_table_insert(sta_hash, station_info->mac, station_info);
+
+ g_free(lower_mac);
+ return 0;
+}
+
+int connman_technology_tethering_remove_station(const char *mac)
+{
+ char *lower_mac;
+ struct connman_station_info *info_found;
+
+ __sync_synchronize();
+
+ lower_mac = g_ascii_strdown(mac, -1);
+
+ info_found = g_hash_table_lookup(sta_hash, lower_mac);
+ if (info_found == NULL) {
+ g_free(lower_mac);
+ return -EACCES;
+ }
+
+ if (info_found->is_connected) {
+ info_found->is_connected = FALSE;
+ emit_station_signal("DhcpLeaseDeleted", info_found);
+ }
+ g_free(lower_mac);
+ g_hash_table_remove(sta_hash, info_found->mac);
+ g_free(info_found->path);
+ g_free(info_found->type);
+ g_free(info_found);
+
+ return 0;
+}
+
const char *__connman_tethering_get_bridge(void)
{
int sk, err;
}
static GDHCPServer *dhcp_server_start(const char *bridge,
- const char *router, const char* subnet,
+ const char *router, const char *subnet,
const char *start_ip, const char *end_ip,
unsigned int lease_time, const char *dns)
{
return NULL;
dhcp_server = g_dhcp_server_new(G_DHCP_IPV4, index, &error);
- if (dhcp_server == NULL) {
+ if (!dhcp_server) {
dhcp_server_error(error);
return NULL;
}
g_dhcp_server_set_option(dhcp_server, G_DHCP_DNS_SERVER, dns);
g_dhcp_server_set_ip_range(dhcp_server, start_ip, end_ip);
+ g_dhcp_server_set_save_ack_lease(dhcp_server,
+ save_dhcp_ack_lease_info, NULL);
+
g_dhcp_server_start(dhcp_server);
return dhcp_server;
static void dhcp_server_stop(GDHCPServer *server)
{
- if (server == NULL)
+ if (!server)
return;
g_dhcp_server_unref(server);
static void tethering_restart(struct connman_ippool *pool, void *user_data)
{
+ DBG("pool %p", pool);
__connman_tethering_set_disabled();
__connman_tethering_set_enabled();
}
-void __connman_tethering_set_enabled(void)
+int __connman_tethering_set_enabled(void)
{
int index;
int err;
const char *end_ip;
const char *dns;
unsigned char prefixlen;
+ char **ns;
DBG("enabled %d", tethering_enabled + 1);
if (__sync_fetch_and_add(&tethering_enabled, 1) != 0)
- return;
+ return 0;
err = __connman_bridge_create(BRIDGE_NAME);
if (err < 0) {
__sync_fetch_and_sub(&tethering_enabled, 1);
- return;
+ return -EOPNOTSUPP;
}
index = connman_inet_ifindex(BRIDGE_NAME);
dhcp_ippool = __connman_ippool_create(index, 2, 252,
tethering_restart, NULL);
- if (dhcp_ippool == NULL) {
+ if (!dhcp_ippool) {
connman_error("Fail to create IP pool");
__connman_bridge_remove(BRIDGE_NAME);
__sync_fetch_and_sub(&tethering_enabled, 1);
- return;
+ return -EADDRNOTAVAIL;
}
gateway = __connman_ippool_get_gateway(dhcp_ippool);
start_ip = __connman_ippool_get_start_ip(dhcp_ippool);
end_ip = __connman_ippool_get_end_ip(dhcp_ippool);
- err = __connman_bridge_enable(BRIDGE_NAME, gateway, broadcast);
+ err = __connman_bridge_enable(BRIDGE_NAME, gateway,
+ connman_ipaddress_calc_netmask_len(subnet_mask),
+ broadcast);
if (err < 0 && err != -EALREADY) {
__connman_ippool_unref(dhcp_ippool);
__connman_bridge_remove(BRIDGE_NAME);
__sync_fetch_and_sub(&tethering_enabled, 1);
- return;
+ return -EADDRNOTAVAIL;
+ }
+
+ ns = connman_setting_get_string_list("FallbackNameservers");
+ if (ns) {
+ if (ns[0]) {
+ g_free(private_network_primary_dns);
+ private_network_primary_dns = g_strdup(ns[0]);
+ }
+ if (ns[1]) {
+ g_free(private_network_secondary_dns);
+ private_network_secondary_dns = g_strdup(ns[1]);
+ }
+
+ DBG("Fallback ns primary %s secondary %s",
+ private_network_primary_dns,
+ private_network_secondary_dns);
}
dns = gateway;
if (__connman_dnsproxy_add_listener(index) < 0) {
connman_error("Can't add listener %s to DNS proxy",
BRIDGE_NAME);
- dns = BRIDGE_DNS;
+ dns = private_network_primary_dns;
+ DBG("Serving %s nameserver to clients", dns);
}
tethering_dhcp_server = dhcp_server_start(BRIDGE_NAME,
gateway, subnet_mask,
start_ip, end_ip,
24 * 3600, dns);
- if (tethering_dhcp_server == NULL) {
+ if (!tethering_dhcp_server) {
__connman_bridge_disable(BRIDGE_NAME);
__connman_ippool_unref(dhcp_ippool);
__connman_bridge_remove(BRIDGE_NAME);
__sync_fetch_and_sub(&tethering_enabled, 1);
- return;
+ return -EOPNOTSUPP;
}
- prefixlen =
- __connman_ipaddress_netmask_prefix_len(subnet_mask);
- __connman_nat_enable(BRIDGE_NAME, start_ip, prefixlen);
+ prefixlen = connman_ipaddress_calc_netmask_len(subnet_mask);
+ err = __connman_nat_enable(BRIDGE_NAME, start_ip, prefixlen);
+ if (err < 0) {
+ connman_error("Cannot enable NAT %d/%s", err, strerror(-err));
+ dhcp_server_stop(tethering_dhcp_server);
+ __connman_bridge_disable(BRIDGE_NAME);
+ __connman_ippool_unref(dhcp_ippool);
+ __connman_bridge_remove(BRIDGE_NAME);
+ __sync_fetch_and_sub(&tethering_enabled, 1);
+ return -EOPNOTSUPP;
+ }
+
+ err = __connman_ipv6pd_setup(BRIDGE_NAME);
+ if (err < 0 && err != -EINPROGRESS)
+ DBG("Cannot setup IPv6 prefix delegation %d/%s", err,
+ strerror(-err));
DBG("tethering started");
+
+ return 0;
}
void __connman_tethering_set_disabled(void)
DBG("enabled %d", tethering_enabled - 1);
- index = connman_inet_ifindex(BRIDGE_NAME);
- __connman_dnsproxy_remove_listener(index);
-
if (__sync_fetch_and_sub(&tethering_enabled, 1) != 1)
return;
+ __connman_ipv6pd_cleanup();
+
+ index = connman_inet_ifindex(BRIDGE_NAME);
+ __connman_dnsproxy_remove_listener(index);
+
__connman_nat_disable(BRIDGE_NAME);
dhcp_server_stop(tethering_dhcp_server);
__connman_bridge_remove(BRIDGE_NAME);
+ g_free(private_network_primary_dns);
+ private_network_primary_dns = NULL;
+ g_free(private_network_secondary_dns);
+ private_network_secondary_dns = NULL;
+
DBG("tethering stopped");
}
subnet_mask = __connman_ippool_get_subnet_mask(pn->pool);
server_ip = __connman_ippool_get_start_ip(pn->pool);
peer_ip = __connman_ippool_get_end_ip(pn->pool);
- prefixlen =
- __connman_ipaddress_netmask_prefix_len(subnet_mask);
+ prefixlen = connman_ipaddress_calc_netmask_len(subnet_mask);
if ((__connman_inet_modify_address(RTM_NEWADDR,
NLM_F_REPLACE | NLM_F_ACK, pn->index, AF_INET,
DBUS_TYPE_STRING, &server_ip);
connman_dbus_dict_append_basic(&dict, "PeerIPv4",
DBUS_TYPE_STRING, &peer_ip);
- connman_dbus_dict_append_basic(&dict, "PrimaryDNS",
+ if (pn->primary_dns)
+ connman_dbus_dict_append_basic(&dict, "PrimaryDNS",
DBUS_TYPE_STRING, &pn->primary_dns);
- connman_dbus_dict_append_basic(&dict, "SecondaryDNS",
+
+ if (pn->secondary_dns)
+ connman_dbus_dict_append_basic(&dict, "SecondaryDNS",
DBUS_TYPE_STRING, &pn->secondary_dns);
connman_dbus_dict_close(&array, &dict);
g_free(pn->interface);
g_free(pn->owner);
g_free(pn->path);
+ g_free(pn->primary_dns);
+ g_free(pn->secondary_dns);
g_free(pn);
}
err = connman_inet_set_mtu(index, DEFAULT_MTU);
pn = g_try_new0(struct connman_private_network, 1);
- if (pn == NULL) {
+ if (!pn) {
err = -ENOMEM;
goto error;
}
owner_disconnect, pn, NULL);
pn->msg = msg;
pn->reply = dbus_message_new_method_return(pn->msg);
- if (pn->reply == NULL)
+ if (!pn->reply)
goto error;
pn->fd = fd;
pn->interface = iface;
pn->index = index;
pn->pool = __connman_ippool_create(pn->index, 1, 1, ippool_disconnect, pn);
- if (pn->pool == NULL) {
+ if (!pn->pool) {
errno = -ENOMEM;
goto error;
}
- pn->primary_dns = PRIVATE_NETWORK_PRIMARY_DNS;
- pn->secondary_dns = PRIVATE_NETWORK_SECONDARY_DNS;
+ pn->primary_dns = g_strdup(private_network_primary_dns);
+ pn->secondary_dns = g_strdup(private_network_secondary_dns);
pn->iface_watch = connman_rtnl_add_newlink_watch(index,
setup_tun_interface, pn);
close(fd);
g_free(iface);
g_free(path);
+ if (pn)
+ g_free(pn->owner);
g_free(pn);
return err;
}
struct connman_private_network *pn;
pn = g_hash_table_lookup(pn_hash, path);
- if (pn == NULL)
+ if (!pn)
return -EACCES;
g_hash_table_remove(pn_hash, path);
tethering_enabled = 0;
connection = connman_dbus_get_connection();
- if (connection == NULL)
+ if (!connection)
return -EFAULT;
pn_hash = g_hash_table_new_full(g_str_hash, g_str_equal,
NULL, remove_private_network);
+ sta_hash = g_hash_table_new_full(g_str_hash,
+ g_str_equal, NULL, NULL);
+
return 0;
}
void __connman_tethering_cleanup(void)
{
- DBG("");
+ DBG("enabled %d", tethering_enabled);
__sync_synchronize();
- if (tethering_enabled == 0) {
+ if (tethering_enabled > 0) {
if (tethering_dhcp_server)
dhcp_server_stop(tethering_dhcp_server);
__connman_bridge_disable(BRIDGE_NAME);
__connman_nat_disable(BRIDGE_NAME);
}
- if (connection == NULL)
+ if (!connection)
return;
g_hash_table_destroy(pn_hash);
+ g_hash_table_foreach(sta_hash, destroy_station, NULL);
+ g_hash_table_destroy(sta_hash);
dbus_connection_unref(connection);
}
projects / platform / upstream / connman.git / blobdiff