ipconfig: Only save FIXED & MANUAL IP configuraiton
[platform/upstream/connman.git] / src / ipconfig.c
index 7a14c42..7fc887b 100644 (file)
@@ -23,6 +23,7 @@
 #include <config.h>
 #endif
 
+#include <stdio.h>
 #include <net/if.h>
 #include <net/if_arp.h>
 #include <linux/if_link.h>
@@ -50,6 +51,8 @@ struct connman_ipconfig {
        enum connman_ipconfig_method method;
        struct connman_ipaddress *address;
        struct connman_ipaddress *system;
+
+       int ipv6_privacy_config;
 };
 
 struct connman_ipdevice {
@@ -76,6 +79,9 @@ struct connman_ipdevice {
 
        struct connman_ipconfig *config_ipv4;
        struct connman_ipconfig *config_ipv6;
+
+       gboolean ipv6_enabled;
+       int ipv6_privacy;
 };
 
 static GHashTable *ipdevice_hash = NULL;
@@ -291,6 +297,125 @@ static const char *scope2str(unsigned char scope)
        return "";
 }
 
+static gboolean get_ipv6_state(gchar *ifname)
+{
+       int disabled;
+       gchar *path;
+       FILE *f;
+       gboolean enabled = FALSE;
+
+       if (ifname == NULL)
+               path = g_strdup("/proc/sys/net/ipv6/conf/all/disable_ipv6");
+       else
+               path = g_strdup_printf(
+                       "/proc/sys/net/ipv6/conf/%s/disable_ipv6", ifname);
+
+       if (path == NULL)
+               return enabled;
+
+       f = fopen(path, "r");
+
+       g_free(path);
+
+       if (f != NULL) {
+               if (fscanf(f, "%d", &disabled) > 0)
+                       enabled = !disabled;
+               fclose(f);
+       }
+
+       return enabled;
+}
+
+static void set_ipv6_state(gchar *ifname, gboolean enable)
+{
+       gchar *path;
+       FILE *f;
+
+       if (ifname == NULL)
+               path = g_strdup("/proc/sys/net/ipv6/conf/all/disable_ipv6");
+       else
+               path = g_strdup_printf(
+                       "/proc/sys/net/ipv6/conf/%s/disable_ipv6", ifname);
+
+       if (path == NULL)
+               return;
+
+       f = fopen(path, "r+");
+
+       g_free(path);
+
+       if (f == NULL)
+               return;
+
+       if (enable == FALSE)
+               fprintf(f, "1");
+       else
+               fprintf(f, "0");
+
+       fclose(f);
+}
+
+static int get_ipv6_privacy(gchar *ifname)
+{
+       gchar *path;
+       FILE *f;
+       int value;
+
+       if (ifname == NULL)
+               return 0;
+
+       path = g_strdup_printf("/proc/sys/net/ipv6/conf/%s/use_tempaddr",
+                                                               ifname);
+
+       if (path == NULL)
+               return 0;
+
+       f = fopen(path, "r");
+
+       g_free(path);
+
+       if (f == NULL)
+               return 0;
+
+       if (fscanf(f, "%d", &value) <= 0)
+               value = 0;
+
+       fclose(f);
+
+       return value;
+}
+
+/* Enable the IPv6 privacy extension for stateless address autoconfiguration.
+ * The privacy extension is described in RFC 3041 and RFC 4941
+ */
+static void set_ipv6_privacy(gchar *ifname, int value)
+{
+       gchar *path;
+       FILE *f;
+
+       if (ifname == NULL)
+               return;
+
+       path = g_strdup_printf("/proc/sys/net/ipv6/conf/%s/use_tempaddr",
+                                                               ifname);
+
+       if (path == NULL)
+               return;
+
+       if (value < 0)
+               value = 0;
+
+       f = fopen(path, "r+");
+
+       g_free(path);
+
+       if (f == NULL)
+               return;
+
+       fprintf(f, "%d", value);
+       fclose(f);
+}
+
 static void free_ipdevice(gpointer data)
 {
        struct connman_ipdevice *ipdevice = data;
@@ -314,6 +439,10 @@ static void free_ipdevice(gpointer data)
        g_free(ipdevice->pac);
 
        g_free(ipdevice->address);
+
+       set_ipv6_state(ipdevice->ifname, ipdevice->ipv6_enabled);
+       set_ipv6_privacy(ipdevice->ifname, ipdevice->ipv6_privacy);
+
        g_free(ipdevice->ifname);
        g_free(ipdevice);
 }
@@ -409,6 +538,9 @@ void __connman_ipconfig_newlink(int index, unsigned short type,
        ipdevice->ifname = connman_inet_ifname(index);
        ipdevice->type = type;
 
+       ipdevice->ipv6_enabled = get_ipv6_state(ipdevice->ifname);
+       ipdevice->ipv6_privacy = get_ipv6_privacy(ipdevice->ifname);
+
        ipdevice->address = g_strdup(address);
 
        g_hash_table_insert(ipdevice_hash, GINT_TO_POINTER(index), ipdevice);
@@ -616,7 +748,8 @@ void __connman_ipconfig_deladdr(int index, int family, const char *label,
        ipdevice->address_list = g_slist_remove(ipdevice->address_list,
                                                                ipaddress);
 
-       connman_ipaddress_free(ipaddress);
+       connman_ipaddress_clear(ipaddress);
+       g_free(ipaddress);
 
        connman_info("%s {del} address %s/%u label %s", ipdevice->ifname,
                                                address, prefixlen, label);
@@ -786,7 +919,13 @@ void __connman_ipconfig_foreach(void (*function) (int index, void *user_data),
        g_list_free(keys);
 }
 
-unsigned short __connman_ipconfig_get_type(int index)
+enum connman_ipconfig_type __connman_ipconfig_get_config_type(
+                                       struct connman_ipconfig *ipconfig)
+{
+       return ipconfig ? ipconfig->type : CONNMAN_IPCONFIG_TYPE_UNKNOWN;
+}
+
+unsigned short __connman_ipconfig_get_type_from_index(int index)
 {
        struct connman_ipdevice *ipdevice;
 
@@ -797,7 +936,7 @@ unsigned short __connman_ipconfig_get_type(int index)
        return ipdevice->type;
 }
 
-unsigned int __connman_ipconfig_get_flags(int index)
+unsigned int __connman_ipconfig_get_flags_from_index(int index)
 {
        struct connman_ipdevice *ipdevice;
 
@@ -808,7 +947,7 @@ unsigned int __connman_ipconfig_get_flags(int index)
        return ipdevice->flags;
 }
 
-const char *__connman_ipconfig_get_gateway(int index)
+const char *__connman_ipconfig_get_gateway_from_index(int index)
 {
        struct connman_ipdevice *ipdevice;
 
@@ -838,6 +977,110 @@ void __connman_ipconfig_set_index(struct connman_ipconfig *ipconfig, int index)
        ipconfig->index = index;
 }
 
+const char *__connman_ipconfig_get_local(struct connman_ipconfig *ipconfig)
+{
+       if (ipconfig->address == NULL)
+               return NULL;
+
+       return ipconfig->address->local;
+}
+
+void __connman_ipconfig_set_local(struct connman_ipconfig *ipconfig, const char *address)
+{
+       if (ipconfig->address == NULL)
+               return;
+
+       g_free(ipconfig->address->local);
+       ipconfig->address->local = g_strdup(address);
+}
+
+const char *__connman_ipconfig_get_peer(struct connman_ipconfig *ipconfig)
+{
+       if (ipconfig->address == NULL)
+               return NULL;
+
+       return ipconfig->address->peer;
+}
+
+void __connman_ipconfig_set_peer(struct connman_ipconfig *ipconfig, const char *address)
+{
+       if (ipconfig->address == NULL)
+               return;
+
+       g_free(ipconfig->address->peer);
+       ipconfig->address->peer = g_strdup(address);
+}
+
+const char *__connman_ipconfig_get_broadcast(struct connman_ipconfig *ipconfig)
+{
+       if (ipconfig->address == NULL)
+               return NULL;
+
+       return ipconfig->address->broadcast;
+}
+
+void __connman_ipconfig_set_broadcast(struct connman_ipconfig *ipconfig, const char *broadcast)
+{
+       if (ipconfig->address == NULL)
+               return;
+
+       g_free(ipconfig->address->broadcast);
+       ipconfig->address->broadcast = g_strdup(broadcast);
+}
+
+const char *__connman_ipconfig_get_gateway(struct connman_ipconfig *ipconfig)
+{
+       if (ipconfig->address == NULL)
+               return NULL;
+
+       return ipconfig->address->gateway;
+}
+
+void __connman_ipconfig_set_gateway(struct connman_ipconfig *ipconfig, const char *gateway)
+{
+       struct connman_service *service;
+
+       if (ipconfig->address == NULL)
+               return;
+
+       service = __connman_service_lookup_from_index(ipconfig->index);
+       if (service != NULL)
+               __connman_connection_gateway_remove(service);
+
+       g_free(ipconfig->address->gateway);
+       ipconfig->address->gateway = g_strdup(gateway);
+
+       if (service != NULL && ipconfig->address->gateway != NULL) {
+               if (ipconfig->type == CONNMAN_IPCONFIG_TYPE_IPV6) {
+                       __connman_connection_gateway_add(service,
+                                               NULL,
+                                               ipconfig->address->gateway,
+                                               ipconfig->address->peer);
+               } else if (ipconfig->type == CONNMAN_IPCONFIG_TYPE_IPV4) {
+                       __connman_connection_gateway_add(service,
+                                               ipconfig->address->gateway,
+                                               NULL,
+                                               ipconfig->address->peer);
+               }
+       }
+}
+
+unsigned char __connman_ipconfig_get_prefixlen(struct connman_ipconfig *ipconfig)
+{
+       if (ipconfig->address == NULL)
+               return 0;
+
+       return ipconfig->address->prefixlen;
+}
+
+void __connman_ipconfig_set_prefixlen(struct connman_ipconfig *ipconfig, unsigned char prefixlen)
+{
+       if (ipconfig->address == NULL)
+               return;
+
+       ipconfig->address->prefixlen = prefixlen;
+}
+
 static struct connman_ipconfig *create_ipv6config(int index)
 {
        struct connman_ipconfig *ipv6config;
@@ -853,6 +1096,7 @@ static struct connman_ipconfig *create_ipv6config(int index)
        ipv6config->index = index;
        ipv6config->type = CONNMAN_IPCONFIG_TYPE_IPV6;
        ipv6config->method = CONNMAN_IPCONFIG_METHOD_AUTO;
+       ipv6config->ipv6_privacy_config = 0;
 
        ipv6config->address = connman_ipaddress_alloc(AF_INET6);
        if (ipv6config->address == NULL) {
@@ -1083,33 +1327,6 @@ void __connman_ipconfig_set_element_ipv6_gateway(
                element->ipv6.gateway = ipconfig->address->gateway;
 }
 
-/*
- * FIXME: The element soulution should be removed in the future
- * Set IPv4 and IPv6 gateway
- */
-int __connman_ipconfig_set_gateway(struct connman_ipconfig *ipconfig,
-                                               struct connman_element *parent)
-{
-       struct connman_element *connection;
-
-       connection = connman_element_create(NULL);
-
-       DBG("ipconfig %p", ipconfig);
-
-       connection->type  = CONNMAN_ELEMENT_TYPE_CONNECTION;
-       connection->index = ipconfig->index;
-
-       if (ipconfig->type == CONNMAN_IPCONFIG_TYPE_IPV4)
-               connection->ipv4.gateway = ipconfig->address->gateway;
-       else if (ipconfig->type == CONNMAN_IPCONFIG_TYPE_IPV6)
-               connection->ipv6.gateway = ipconfig->address->gateway;
-
-       if (connman_element_register(connection, parent) < 0)
-               connman_element_unref(connection);
-
-       return 0;
-}
-
 int __connman_ipconfig_set_address(struct connman_ipconfig *ipconfig)
 {
        DBG("");
@@ -1201,6 +1418,46 @@ const char *__connman_ipconfig_get_proxy_autoconfig(struct connman_ipconfig *ipc
        return ipdevice->pac;
 }
 
+static void disable_ipv6(struct connman_ipconfig *ipconfig)
+{
+       struct connman_ipdevice *ipdevice;
+
+       DBG("");
+
+       ipdevice = g_hash_table_lookup(ipdevice_hash,
+                                       GINT_TO_POINTER(ipconfig->index));
+       if (ipdevice == NULL)
+               return;
+
+       set_ipv6_state(ipdevice->ifname, FALSE);
+}
+
+static void enable_ipv6(struct connman_ipconfig *ipconfig)
+{
+       struct connman_ipdevice *ipdevice;
+
+       DBG("");
+
+       ipdevice = g_hash_table_lookup(ipdevice_hash,
+                                       GINT_TO_POINTER(ipconfig->index));
+       if (ipdevice == NULL)
+               return;
+
+       if (ipconfig->method == CONNMAN_IPCONFIG_METHOD_AUTO)
+               set_ipv6_privacy(ipdevice->ifname,
+                               ipconfig->ipv6_privacy_config);
+
+       set_ipv6_state(ipdevice->ifname, TRUE);
+}
+
+void __connman_ipconfig_disable_ipv6(struct connman_ipconfig *ipconfig)
+{
+       if (ipconfig == NULL || ipconfig->type != CONNMAN_IPCONFIG_TYPE_IPV6)
+               return;
+
+       disable_ipv6(ipconfig);
+}
+
 int __connman_ipconfig_enable(struct connman_ipconfig *ipconfig)
 {
        struct connman_ipdevice *ipdevice;
@@ -1226,6 +1483,7 @@ int __connman_ipconfig_enable(struct connman_ipconfig *ipconfig)
                if (ipdevice->config_ipv6 == ipconfig)
                        return -EALREADY;
                type = CONNMAN_IPCONFIG_TYPE_IPV6;
+               enable_ipv6(ipconfig);
        } else
                return -EINVAL;
 
@@ -1309,6 +1567,10 @@ int __connman_ipconfig_disable(struct connman_ipconfig *ipconfig)
        if (ipdevice->config_ipv6 == ipconfig) {
                ipconfig_list = g_list_remove(ipconfig_list, ipconfig);
 
+               if (ipdevice->config_ipv6->method ==
+                                               CONNMAN_IPCONFIG_METHOD_AUTO)
+                       disable_ipv6(ipdevice->config_ipv6);
+
                connman_ipaddress_clear(ipdevice->config_ipv6->system);
                connman_ipconfig_unref(ipdevice->config_ipv6);
                ipdevice->config_ipv6 = NULL;
@@ -1354,6 +1616,30 @@ enum connman_ipconfig_method __connman_ipconfig_string2method(const char *method
                return CONNMAN_IPCONFIG_METHOD_UNKNOWN;
 }
 
+static const char *privacy2string(int privacy)
+{
+       if (privacy <= 0)
+               return "disabled";
+       else if (privacy == 1)
+               return "enabled";
+       else if (privacy > 1)
+               return "prefered";
+
+       return "disabled";
+}
+
+static int string2privacy(const char *privacy)
+{
+       if (g_strcmp0(privacy, "disabled") == 0)
+               return 0;
+       else if (g_strcmp0(privacy, "enabled") == 0)
+               return 1;
+       else if (g_strcmp0(privacy, "prefered") == 0)
+               return 2;
+       else
+               return 0;
+}
+
 void __connman_ipconfig_append_ipv4(struct connman_ipconfig *ipconfig,
                                                        DBusMessageIter *iter)
 {
@@ -1396,7 +1682,7 @@ void __connman_ipconfig_append_ipv4(struct connman_ipconfig *ipconfig,
 void __connman_ipconfig_append_ipv6(struct connman_ipconfig *ipconfig,
                                                        DBusMessageIter *iter)
 {
-       const char *str;
+       const char *str, *privacy;
 
        DBG("");
 
@@ -1423,12 +1709,16 @@ void __connman_ipconfig_append_ipv6(struct connman_ipconfig *ipconfig,
        if (ipconfig->system->gateway != NULL)
                connman_dbus_dict_append_basic(iter, "Gateway",
                                DBUS_TYPE_STRING, &ipconfig->system->gateway);
+
+       privacy = privacy2string(ipconfig->ipv6_privacy_config);
+       connman_dbus_dict_append_basic(iter, "Privacy",
+                               DBUS_TYPE_STRING, &privacy);
 }
 
 void __connman_ipconfig_append_ipv6config(struct connman_ipconfig *ipconfig,
                                                        DBusMessageIter *iter)
 {
-       const char *str;
+       const char *str, *privacy;
 
        DBG("");
 
@@ -1463,6 +1753,10 @@ void __connman_ipconfig_append_ipv6config(struct connman_ipconfig *ipconfig,
        if (ipconfig->address->gateway != NULL)
                connman_dbus_dict_append_basic(iter, "Gateway",
                                DBUS_TYPE_STRING, &ipconfig->address->gateway);
+
+       privacy = privacy2string(ipconfig->ipv6_privacy_config);
+       connman_dbus_dict_append_basic(iter, "Privacy",
+                               DBUS_TYPE_STRING, &privacy);
 }
 
 void __connman_ipconfig_append_ipv4config(struct connman_ipconfig *ipconfig,
@@ -1513,19 +1807,15 @@ void __connman_ipconfig_append_ipv4config(struct connman_ipconfig *ipconfig,
 }
 
 int __connman_ipconfig_set_config(struct connman_ipconfig *ipconfig,
-               enum connman_ipconfig_type type, DBusMessageIter *array)
+                                                       DBusMessageIter *array)
 {
        enum connman_ipconfig_method method = CONNMAN_IPCONFIG_METHOD_UNKNOWN;
        const char *address = NULL, *netmask = NULL, *gateway = NULL,
-                       *prefix_length_string = NULL;
-       int prefix_length = 0;
+               *prefix_length_string = NULL, *privacy_string = NULL;
+       int prefix_length = 0, privacy = 0;
        DBusMessageIter dict;
 
-       DBG("ipconfig %p type %d", ipconfig, type);
-
-       if (type != CONNMAN_IPCONFIG_TYPE_IPV4 &&
-                       type != CONNMAN_IPCONFIG_TYPE_IPV6)
-               return -EINVAL;
+       DBG("ipconfig %p", ipconfig);
 
        if (dbus_message_iter_get_arg_type(array) != DBUS_TYPE_ARRAY)
                return -EINVAL;
@@ -1581,27 +1871,49 @@ int __connman_ipconfig_set_config(struct connman_ipconfig *ipconfig,
                                return -EINVAL;
 
                        dbus_message_iter_get_basic(&entry, &gateway);
+               } else if (g_str_equal(key, "Privacy") == TRUE) {
+                       if (type != DBUS_TYPE_STRING)
+                               return -EINVAL;
+
+                       dbus_message_iter_get_basic(&entry, &privacy_string);
+                       privacy = string2privacy(privacy_string);
                }
                dbus_message_iter_next(&dict);
        }
 
-       DBG("method %d address %s netmask %s gateway %s prefix_length %d",
-                       method, address, netmask, gateway, prefix_length);
+       DBG("method %d address %s netmask %s gateway %s prefix_length %d "
+               "privacy %s",
+               method, address, netmask, gateway, prefix_length,
+               privacy_string);
 
        switch (method) {
        case CONNMAN_IPCONFIG_METHOD_UNKNOWN:
-       case CONNMAN_IPCONFIG_METHOD_OFF:
        case CONNMAN_IPCONFIG_METHOD_FIXED:
-       case CONNMAN_IPCONFIG_METHOD_AUTO:
                return -EINVAL;
 
+       case CONNMAN_IPCONFIG_METHOD_OFF:
+               ipconfig->method = method;
+               if (ipconfig->type == CONNMAN_IPCONFIG_TYPE_IPV6)
+                       disable_ipv6(ipconfig);
+               break;
+
+       case CONNMAN_IPCONFIG_METHOD_AUTO:
+               if (ipconfig->type != CONNMAN_IPCONFIG_TYPE_IPV6)
+                       return -EINVAL;
+
+               ipconfig->method = method;
+               if (privacy_string != NULL)
+                       ipconfig->ipv6_privacy_config = privacy;
+               enable_ipv6(ipconfig);
+               break;
+
        case CONNMAN_IPCONFIG_METHOD_MANUAL:
                if (address == NULL)
                        return -EINVAL;
 
                ipconfig->method = method;
 
-               if (type == CONNMAN_IPCONFIG_TYPE_IPV4)
+               if (ipconfig->type == CONNMAN_IPCONFIG_TYPE_IPV4)
                        connman_ipaddress_set_ipv4(ipconfig->address,
                                                address, netmask, gateway);
                else
@@ -1611,8 +1923,8 @@ int __connman_ipconfig_set_config(struct connman_ipconfig *ipconfig,
                break;
 
        case CONNMAN_IPCONFIG_METHOD_DHCP:
-               if (ipconfig->method == method)
-                       return 0;
+               if (ipconfig->type == CONNMAN_IPCONFIG_TYPE_IPV6)
+                       return -EOPNOTSUPP;
 
                ipconfig->method = method;
                break;
@@ -1669,6 +1981,22 @@ int __connman_ipconfig_load(struct connman_ipconfig *ipconfig,
        if (ipconfig->method == CONNMAN_IPCONFIG_METHOD_UNKNOWN)
                ipconfig->method = CONNMAN_IPCONFIG_METHOD_OFF;
 
+       if (ipconfig->type == CONNMAN_IPCONFIG_TYPE_IPV6) {
+               if (ipconfig->method == CONNMAN_IPCONFIG_METHOD_AUTO ||
+                       ipconfig->method == CONNMAN_IPCONFIG_METHOD_MANUAL) {
+                       char *privacy;
+                       char *pprefix = g_strdup_printf("%sprivacy", prefix);
+                       privacy = g_key_file_get_string(keyfile, identifier,
+                                                       pprefix, NULL);
+                       ipconfig->ipv6_privacy_config = string2privacy(privacy);
+                       g_free(pprefix);
+                       g_free(privacy);
+
+                       __connman_ipconfig_enable(ipconfig);
+                       enable_ipv6(ipconfig);
+               }
+       }
+
        g_free(method);
        g_free(key);
 
@@ -1714,6 +2042,17 @@ int __connman_ipconfig_save(struct connman_ipconfig *ipconfig,
        g_key_file_set_string(keyfile, identifier, key, method);
        g_free(key);
 
+       switch (ipconfig->method) {
+       case CONNMAN_IPCONFIG_METHOD_FIXED:
+       case CONNMAN_IPCONFIG_METHOD_MANUAL:
+               break;
+       case CONNMAN_IPCONFIG_METHOD_UNKNOWN:
+       case CONNMAN_IPCONFIG_METHOD_OFF:
+       case CONNMAN_IPCONFIG_METHOD_DHCP:
+       case CONNMAN_IPCONFIG_METHOD_AUTO:
+               return 0;
+       }
+
        key = g_strdup_printf("%snetmask_prefixlen", prefix);
        g_key_file_set_integer(keyfile, identifier,
                        key, ipconfig->address->prefixlen);
@@ -1743,6 +2082,14 @@ int __connman_ipconfig_save(struct connman_ipconfig *ipconfig,
                        key, ipconfig->address->gateway);
        g_free(key);
 
+       if (ipconfig->type == CONNMAN_IPCONFIG_TYPE_IPV6) {
+               const char *privacy;
+               privacy = privacy2string(ipconfig->ipv6_privacy_config);
+               key = g_strdup_printf("%sprivacy", prefix);
+               g_key_file_set_string(keyfile, identifier, key, privacy);
+               g_free(key);
+       }
+
        return 0;
 }