rtnl.c 37.6 KB
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/*
 *
 *  Connection Manager
 *
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 *  Copyright (C) 2007-2013  Intel Corporation. All rights reserved.
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 *
 *  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
 *  published by the Free Software Foundation.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 *
 */

#ifdef HAVE_CONFIG_H
#include <config.h>
#endif

#include <errno.h>
#include <stdio.h>
#include <unistd.h>
#include <string.h>
#include <sys/socket.h>
#include <sys/ioctl.h>
#include <arpa/inet.h>
#include <netinet/ether.h>
#include <netinet/icmp6.h>
#include <net/if_arp.h>
#include <linux/if.h>
#include <linux/netlink.h>
#include <linux/rtnetlink.h>
#include <linux/wireless.h>

#include <glib.h>

#include "connman.h"
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#include "log.h"
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#ifndef ARPHDR_PHONET_PIPE
#define ARPHDR_PHONET_PIPE (821)
#endif

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#ifndef ARPHRD_RAWIP
#define ARPHRD_RAWIP (530)
#endif

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#define print(arg...) do { if (0) DBG(arg); } while (0)
//#define print(arg...) DBG(arg)
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struct watch_data {
	unsigned int id;
	int index;
	connman_rtnl_link_cb_t newlink;
	void *user_data;
};

static GSList *watch_list = NULL;
static unsigned int watch_id = 0;

static GSList *update_list = NULL;
static guint update_interval = G_MAXUINT;
static guint update_timeout = 0;

struct interface_data {
	int index;
	char *ident;
	enum connman_service_type service_type;
	enum connman_device_type device_type;
};

static GHashTable *interface_list = NULL;

static void free_interface(gpointer data)
{
	struct interface_data *interface = data;

	__connman_technology_remove_interface(interface->service_type,
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			interface->index, interface->ident);
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	g_free(interface->ident);
	g_free(interface);
}

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static bool ether_blacklisted(const char *name)
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{
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	if (!name)
		return true;
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	if (__connman_device_isfiltered(name))
		return true;
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	return false;
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}

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static bool wext_interface(char *ifname)
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{
	struct iwreq wrq;
	int fd, err;

	fd = socket(PF_INET, SOCK_DGRAM | SOCK_CLOEXEC, 0);
	if (fd < 0)
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		return false;
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	memset(&wrq, 0, sizeof(wrq));
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	strncpy(wrq.ifr_name, ifname, sizeof(wrq.ifr_name) - 1);
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	err = ioctl(fd, SIOCGIWNAME, &wrq);

	close(fd);

	if (err < 0)
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		return false;
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	return true;
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}

static void read_uevent(struct interface_data *interface)
{
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	char *filename, *name, line[128];
	bool found_devtype;
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	FILE *f;

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	name = connman_inet_ifname(interface->index);

	if (ether_blacklisted(name)) {
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		interface->service_type = CONNMAN_SERVICE_TYPE_UNKNOWN;
		interface->device_type = CONNMAN_DEVICE_TYPE_UNKNOWN;
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		goto out;
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	} else {
		interface->service_type = CONNMAN_SERVICE_TYPE_ETHERNET;
		interface->device_type = CONNMAN_DEVICE_TYPE_ETHERNET;
	}

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	filename = g_strdup_printf("/sys/class/net/%s/uevent", name);
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	f = fopen(filename, "re");

	g_free(filename);

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	if (!f) {
		interface->service_type = CONNMAN_SERVICE_TYPE_UNKNOWN;
		interface->device_type = CONNMAN_DEVICE_TYPE_UNKNOWN;
		goto out;
	}
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	found_devtype = false;
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	while (fgets(line, sizeof(line), f)) {
		char *pos;

		pos = strchr(line, '\n');
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		if (!pos)
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			continue;
		pos[0] = '\0';

		if (strncmp(line, "DEVTYPE=", 8) != 0)
			continue;

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		found_devtype = true;
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		if (strcmp(line + 8, "wlan") == 0) {
			interface->service_type = CONNMAN_SERVICE_TYPE_WIFI;
			interface->device_type = CONNMAN_DEVICE_TYPE_WIFI;
		} else if (strcmp(line + 8, "wwan") == 0) {
			interface->service_type = CONNMAN_SERVICE_TYPE_CELLULAR;
			interface->device_type = CONNMAN_DEVICE_TYPE_CELLULAR;
		} else if (strcmp(line + 8, "bluetooth") == 0) {
			interface->service_type = CONNMAN_SERVICE_TYPE_BLUETOOTH;
			interface->device_type = CONNMAN_DEVICE_TYPE_BLUETOOTH;
		} else if (strcmp(line + 8, "gadget") == 0) {
			interface->service_type = CONNMAN_SERVICE_TYPE_GADGET;
			interface->device_type = CONNMAN_DEVICE_TYPE_GADGET;
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		} else if (strcmp(line + 8, "vlan") == 0) {
			interface->service_type = CONNMAN_SERVICE_TYPE_ETHERNET;
			interface->device_type = CONNMAN_DEVICE_TYPE_ETHERNET;
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		} else {
			interface->service_type = CONNMAN_SERVICE_TYPE_UNKNOWN;
			interface->device_type = CONNMAN_DEVICE_TYPE_UNKNOWN;
		}
	}

	fclose(f);

	if (found_devtype)
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		goto out;
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	/* We haven't got a DEVTYPE, let's check if it's a wireless device */
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	if (wext_interface(name)) {
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		interface->service_type = CONNMAN_SERVICE_TYPE_WIFI;
		interface->device_type = CONNMAN_DEVICE_TYPE_WIFI;

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		connman_error("%s runs an unsupported 802.11 driver", name);
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	}
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out:
	g_free(name);
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}

enum connman_device_type __connman_rtnl_get_device_type(int index)
{
	struct interface_data *interface;

	interface = g_hash_table_lookup(interface_list,
					GINT_TO_POINTER(index));
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	if (!interface)
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		return CONNMAN_DEVICE_TYPE_UNKNOWN;

	return interface->device_type;
}

/**
 * connman_rtnl_add_newlink_watch:
 * @index: network device index
 * @callback: callback function
 * @user_data: callback data;
 *
 * Add a new RTNL watch for newlink events
 *
 * Returns: %0 on failure and a unique id on success
 */
unsigned int connman_rtnl_add_newlink_watch(int index,
			connman_rtnl_link_cb_t callback, void *user_data)
{
	struct watch_data *watch;

	watch = g_try_new0(struct watch_data, 1);
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	if (!watch)
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		return 0;

	watch->id = ++watch_id;
	watch->index = index;

	watch->newlink = callback;
	watch->user_data = user_data;

	watch_list = g_slist_prepend(watch_list, watch);

	DBG("id %d", watch->id);

	if (callback) {
		unsigned int flags = __connman_ipconfig_get_flags_from_index(index);

		if (flags > 0)
			callback(flags, 0, user_data);
	}

	return watch->id;
}

/**
 * connman_rtnl_remove_watch:
 * @id: watch identifier
 *
 * Remove the RTNL watch for the identifier
 */
void connman_rtnl_remove_watch(unsigned int id)
{
	GSList *list;

	DBG("id %d", id);

	if (id == 0)
		return;

	for (list = watch_list; list; list = list->next) {
		struct watch_data *watch = list->data;

		if (watch->id  == id) {
			watch_list = g_slist_remove(watch_list, watch);
			g_free(watch);
			break;
		}
	}
}

static void trigger_rtnl(int index, void *user_data)
{
	struct connman_rtnl *rtnl = user_data;

	if (rtnl->newlink) {
		unsigned short type = __connman_ipconfig_get_type_from_index(index);
		unsigned int flags = __connman_ipconfig_get_flags_from_index(index);

		rtnl->newlink(type, index, flags, 0);
	}

	if (rtnl->newgateway) {
		const char *gateway =
			__connman_ipconfig_get_gateway_from_index(index,
					CONNMAN_IPCONFIG_TYPE_ALL);

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		if (gateway)
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			rtnl->newgateway(index, gateway);
	}
}

static GSList *rtnl_list = NULL;

static gint compare_priority(gconstpointer a, gconstpointer b)
{
	const struct connman_rtnl *rtnl1 = a;
	const struct connman_rtnl *rtnl2 = b;

	return rtnl2->priority - rtnl1->priority;
}

/**
 * connman_rtnl_register:
 * @rtnl: RTNL module
 *
 * Register a new RTNL module
 *
 * Returns: %0 on success
 */
int connman_rtnl_register(struct connman_rtnl *rtnl)
{
	DBG("rtnl %p name %s", rtnl, rtnl->name);

	rtnl_list = g_slist_insert_sorted(rtnl_list, rtnl,
							compare_priority);

	__connman_ipconfig_foreach(trigger_rtnl, rtnl);

	return 0;
}

/**
 * connman_rtnl_unregister:
 * @rtnl: RTNL module
 *
 * Remove a previously registered RTNL module
 */
void connman_rtnl_unregister(struct connman_rtnl *rtnl)
{
	DBG("rtnl %p name %s", rtnl, rtnl->name);

	rtnl_list = g_slist_remove(rtnl_list, rtnl);
}

static const char *operstate2str(unsigned char operstate)
{
	switch (operstate) {
	case IF_OPER_UNKNOWN:
		return "UNKNOWN";
	case IF_OPER_NOTPRESENT:
		return "NOT-PRESENT";
	case IF_OPER_DOWN:
		return "DOWN";
	case IF_OPER_LOWERLAYERDOWN:
		return "LOWER-LAYER-DOWN";
	case IF_OPER_TESTING:
		return "TESTING";
	case IF_OPER_DORMANT:
		return "DORMANT";
	case IF_OPER_UP:
		return "UP";
	}

	return "";
}

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static bool extract_link(struct ifinfomsg *msg, int bytes,
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				struct ether_addr *address, const char **ifname,
				unsigned int *mtu, unsigned char *operstate,
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				struct rtnl_link_stats64 *stats)
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{
	struct rtattr *attr;

	for (attr = IFLA_RTA(msg); RTA_OK(attr, bytes);
					attr = RTA_NEXT(attr, bytes)) {
		switch (attr->rta_type) {
		case IFLA_ADDRESS:
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			if (address)
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				memcpy(address, RTA_DATA(attr), ETH_ALEN);
			break;
		case IFLA_IFNAME:
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			if (ifname)
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				*ifname = RTA_DATA(attr);
			break;
		case IFLA_MTU:
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			if (mtu)
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				*mtu = *((unsigned int *) RTA_DATA(attr));
			break;
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		case IFLA_STATS64:
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			if (stats)
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				memcpy(stats, RTA_DATA(attr),
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					sizeof(struct rtnl_link_stats64));
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			break;
		case IFLA_OPERSTATE:
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			if (operstate)
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				*operstate = *((unsigned char *) RTA_DATA(attr));
			break;
		case IFLA_LINKMODE:
			break;
		case IFLA_WIRELESS:
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			return false;
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		}
	}

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	return true;
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}

static void process_newlink(unsigned short type, int index, unsigned flags,
			unsigned change, struct ifinfomsg *msg, int bytes)
{
	struct ether_addr address = {{ 0, 0, 0, 0, 0, 0 }};
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	struct rtnl_link_stats64 stats;
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	unsigned char operstate = 0xff;
	struct interface_data *interface;
	const char *ifname = NULL;
	unsigned int mtu = 0;
	char ident[13], str[18];
	GSList *list;

	memset(&stats, 0, sizeof(stats));
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	if (!extract_link(msg, bytes, &address, &ifname, &mtu, &operstate, &stats))
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		return;

	snprintf(ident, 13, "%02x%02x%02x%02x%02x%02x",
						address.ether_addr_octet[0],
						address.ether_addr_octet[1],
						address.ether_addr_octet[2],
						address.ether_addr_octet[3],
						address.ether_addr_octet[4],
						address.ether_addr_octet[5]);

	snprintf(str, 18, "%02X:%02X:%02X:%02X:%02X:%02X",
						address.ether_addr_octet[0],
						address.ether_addr_octet[1],
						address.ether_addr_octet[2],
						address.ether_addr_octet[3],
						address.ether_addr_octet[4],
						address.ether_addr_octet[5]);

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	if (flags & IFF_SLAVE) {
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	//	DBG("%s {newlink} ignoring slave, index %d address %s",
	//					ifname, index, str);
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		return;
	}

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	switch (type) {
	case ARPHRD_ETHER:
	case ARPHRD_LOOPBACK:
	case ARPHDR_PHONET_PIPE:
	case ARPHRD_PPP:
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	case ARPHRD_RAWIP:
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	case ARPHRD_NONE:
		__connman_ipconfig_newlink(index, type, flags,
							str, mtu, &stats);
		break;
	}

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//        DBG("%s {newlink} index %d address %s mtu %u",
//						ifname, index, str, mtu);
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//	if (operstate != 0xff)
//		DBG("%s {newlink} index %d operstate %u <%s>",
//						ifname, index, operstate,
//						operstate2str(operstate));
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	interface = g_hash_table_lookup(interface_list, GINT_TO_POINTER(index));
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	if (!interface) {
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		interface = g_new0(struct interface_data, 1);
		interface->index = index;
		interface->ident = g_strdup(ident);

		g_hash_table_insert(interface_list,
					GINT_TO_POINTER(index), interface);

		if (type == ARPHRD_ETHER)
			read_uevent(interface);
	} else
		interface = NULL;

	for (list = rtnl_list; list; list = list->next) {
		struct connman_rtnl *rtnl = list->data;

		if (rtnl->newlink)
			rtnl->newlink(type, index, flags, change);
	}

	/*
	 * The interface needs to be added after the newlink call.
	 * The newlink will create the technology when needed and
	 * __connman_technology_add_interface() expects the
	 * technology to be there already.
	 */
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	if (interface)
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		__connman_technology_add_interface(interface->service_type,
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			interface->index, interface->ident);
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	for (list = watch_list; list; list = list->next) {
		struct watch_data *watch = list->data;

		if (watch->index != index)
			continue;

		if (watch->newlink)
			watch->newlink(flags, change, watch->user_data);
	}
}

static void process_dellink(unsigned short type, int index, unsigned flags,
			unsigned change, struct ifinfomsg *msg, int bytes)
{
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	struct rtnl_link_stats64 stats;
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	unsigned char operstate = 0xff;
	const char *ifname = NULL;
	GSList *list;

	memset(&stats, 0, sizeof(stats));
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	if (!extract_link(msg, bytes, NULL, &ifname, NULL, &operstate, &stats))
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		return;

	if (operstate != 0xff)
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		DBG("%s {dellink} index %d operstate %u <%s>",
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						ifname, index, operstate,
						operstate2str(operstate));

	for (list = rtnl_list; list; list = list->next) {
		struct connman_rtnl *rtnl = list->data;

		if (rtnl->dellink)
			rtnl->dellink(type, index, flags, change);
	}

	switch (type) {
	case ARPHRD_ETHER:
	case ARPHRD_LOOPBACK:
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	case ARPHDR_PHONET_PIPE:
	case ARPHRD_PPP:
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	case ARPHRD_NONE:
		__connman_ipconfig_dellink(index, &stats);
		break;
	}

	g_hash_table_remove(interface_list, GINT_TO_POINTER(index));
}

static void extract_ipv4_addr(struct ifaddrmsg *msg, int bytes,
						const char **label,
						struct in_addr *local,
						struct in_addr *address,
						struct in_addr *broadcast)
{
	struct rtattr *attr;

	for (attr = IFA_RTA(msg); RTA_OK(attr, bytes);
					attr = RTA_NEXT(attr, bytes)) {
		switch (attr->rta_type) {
		case IFA_ADDRESS:
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			if (address)
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				*address = *((struct in_addr *) RTA_DATA(attr));
			break;
		case IFA_LOCAL:
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			if (local)
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				*local = *((struct in_addr *) RTA_DATA(attr));
			break;
		case IFA_BROADCAST:
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			if (broadcast)
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				*broadcast = *((struct in_addr *) RTA_DATA(attr));
			break;
		case IFA_LABEL:
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			if (label)
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				*label = RTA_DATA(attr);
			break;
		}
	}
}

static void extract_ipv6_addr(struct ifaddrmsg *msg, int bytes,
						struct in6_addr *addr,
						struct in6_addr *local)
{
	struct rtattr *attr;

	for (attr = IFA_RTA(msg); RTA_OK(attr, bytes);
					attr = RTA_NEXT(attr, bytes)) {
		switch (attr->rta_type) {
		case IFA_ADDRESS:
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			if (addr)
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				*addr = *((struct in6_addr *) RTA_DATA(attr));
			break;
		case IFA_LOCAL:
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			if (local)
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				*local = *((struct in6_addr *) RTA_DATA(attr));
			break;
		}
	}
}

static void process_newaddr(unsigned char family, unsigned char prefixlen,
				int index, struct ifaddrmsg *msg, int bytes)
{
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	struct in_addr ipv4_addr = { INADDR_ANY };
	struct in6_addr ipv6_address, ipv6_local;
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	const char *label = NULL;
	void *src;
	char ip_string[INET6_ADDRSTRLEN];

	if (family == AF_INET) {

		extract_ipv4_addr(msg, bytes, &label, &ipv4_addr, NULL, NULL);
		src = &ipv4_addr;
	} else if (family == AF_INET6) {
		extract_ipv6_addr(msg, bytes, &ipv6_address, &ipv6_local);
		if (IN6_IS_ADDR_LINKLOCAL(&ipv6_address))
			return;

		src = &ipv6_address;
	} else {
		return;
	}

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	if (!inet_ntop(family, src, ip_string, INET6_ADDRSTRLEN))
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		return;

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	if (__connman_ipconfig_newaddr(index, family, label,
					prefixlen, ip_string) >= 0) {
		if (family == AF_INET6) {
			/*
			 * Re-create RDNSS configured servers if there
			 * are any for this interface. This is done
			 * because we might have now properly
			 * configured interface with proper
			 * autoconfigured address.
			 */
			__connman_resolver_redo_servers(index);
		}
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	}
}

static void process_deladdr(unsigned char family, unsigned char prefixlen,
				int index, struct ifaddrmsg *msg, int bytes)
{
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	struct in_addr ipv4_addr = { INADDR_ANY };
	struct in6_addr ipv6_address, ipv6_local;
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	const char *label = NULL;
	void *src;
	char ip_string[INET6_ADDRSTRLEN];

	if (family == AF_INET) {
		extract_ipv4_addr(msg, bytes, &label, &ipv4_addr, NULL, NULL);
		src = &ipv4_addr;
	} else if (family == AF_INET6) {
		extract_ipv6_addr(msg, bytes, &ipv6_address, &ipv6_local);
		if (IN6_IS_ADDR_LINKLOCAL(&ipv6_address))
			return;

		src = &ipv6_address;
	} else {
		return;
	}

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	if (!inet_ntop(family, src, ip_string, INET6_ADDRSTRLEN))
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		return;

	__connman_ipconfig_deladdr(index, family, label,
					prefixlen, ip_string);
}

static void extract_ipv4_route(struct rtmsg *msg, int bytes, int *index,
						struct in_addr *dst,
						struct in_addr *gateway)
{
	struct rtattr *attr;

	for (attr = RTM_RTA(msg); RTA_OK(attr, bytes);
					attr = RTA_NEXT(attr, bytes)) {
		switch (attr->rta_type) {
		case RTA_DST:
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			if (dst)
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				*dst = *((struct in_addr *) RTA_DATA(attr));
			break;
		case RTA_GATEWAY:
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			if (gateway)
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				*gateway = *((struct in_addr *) RTA_DATA(attr));
			break;
		case RTA_OIF:
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			if (index)
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				*index = *((int *) RTA_DATA(attr));
			break;
		}
	}
}

static void extract_ipv6_route(struct rtmsg *msg, int bytes, int *index,
						struct in6_addr *dst,
						struct in6_addr *gateway)
{
	struct rtattr *attr;

	for (attr = RTM_RTA(msg); RTA_OK(attr, bytes);
					attr = RTA_NEXT(attr, bytes)) {
		switch (attr->rta_type) {
		case RTA_DST:
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			if (dst)
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				*dst = *((struct in6_addr *) RTA_DATA(attr));
			break;
		case RTA_GATEWAY:
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			if (gateway)
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				*gateway =
					*((struct in6_addr *) RTA_DATA(attr));
			break;
		case RTA_OIF:
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			if (index)
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				*index = *((int *) RTA_DATA(attr));
			break;
		}
	}
}

static void process_newroute(unsigned char family, unsigned char scope,
						struct rtmsg *msg, int bytes)
{
	GSList *list;
	char dststr[INET6_ADDRSTRLEN], gatewaystr[INET6_ADDRSTRLEN];
	int index = -1;

	if (family == AF_INET) {
		struct in_addr dst = { INADDR_ANY }, gateway = { INADDR_ANY };

		extract_ipv4_route(msg, bytes, &index, &dst, &gateway);

		inet_ntop(family, &dst, dststr, sizeof(dststr));
		inet_ntop(family, &gateway, gatewaystr, sizeof(gatewaystr));

		__connman_ipconfig_newroute(index, family, scope, dststr,
								gatewaystr);

		/* skip host specific routes */
		if (scope != RT_SCOPE_UNIVERSE &&
			!(scope == RT_SCOPE_LINK && dst.s_addr == INADDR_ANY))
			return;

		if (dst.s_addr != INADDR_ANY)
			return;

	} else if (family == AF_INET6) {
		struct in6_addr dst = IN6ADDR_ANY_INIT,
				gateway = IN6ADDR_ANY_INIT;

		extract_ipv6_route(msg, bytes, &index, &dst, &gateway);

		inet_ntop(family, &dst, dststr, sizeof(dststr));
		inet_ntop(family, &gateway, gatewaystr, sizeof(gatewaystr));

		__connman_ipconfig_newroute(index, family, scope, dststr,
								gatewaystr);

		/* skip host specific routes */
		if (scope != RT_SCOPE_UNIVERSE &&
			!(scope == RT_SCOPE_LINK &&
				IN6_IS_ADDR_UNSPECIFIED(&dst)))
			return;

		if (!IN6_IS_ADDR_UNSPECIFIED(&dst))
			return;
	} else
		return;

	for (list = rtnl_list; list; list = list->next) {
		struct connman_rtnl *rtnl = list->data;

		if (rtnl->newgateway)
			rtnl->newgateway(index, gatewaystr);
	}
}

static void process_delroute(unsigned char family, unsigned char scope,
						struct rtmsg *msg, int bytes)
{
	GSList *list;
	char dststr[INET6_ADDRSTRLEN], gatewaystr[INET6_ADDRSTRLEN];
	int index = -1;

	if (family == AF_INET) {
		struct in_addr dst = { INADDR_ANY }, gateway = { INADDR_ANY };

		extract_ipv4_route(msg, bytes, &index, &dst, &gateway);

		inet_ntop(family, &dst, dststr, sizeof(dststr));
		inet_ntop(family, &gateway, gatewaystr, sizeof(gatewaystr));

		__connman_ipconfig_delroute(index, family, scope, dststr,
								gatewaystr);

		/* skip host specific routes */
		if (scope != RT_SCOPE_UNIVERSE &&
			!(scope == RT_SCOPE_LINK && dst.s_addr == INADDR_ANY))
			return;

		if (dst.s_addr != INADDR_ANY)
			return;

	}  else if (family == AF_INET6) {
		struct in6_addr dst = IN6ADDR_ANY_INIT,
				gateway = IN6ADDR_ANY_INIT;

		extract_ipv6_route(msg, bytes, &index, &dst, &gateway);

		inet_ntop(family, &dst, dststr, sizeof(dststr));
		inet_ntop(family, &gateway, gatewaystr, sizeof(gatewaystr));

		__connman_ipconfig_delroute(index, family, scope, dststr,
						gatewaystr);

		/* skip host specific routes */
		if (scope != RT_SCOPE_UNIVERSE &&
			!(scope == RT_SCOPE_LINK &&
				IN6_IS_ADDR_UNSPECIFIED(&dst)))
			return;

		if (!IN6_IS_ADDR_UNSPECIFIED(&dst))
			return;
	} else
		return;

	for (list = rtnl_list; list; list = list->next) {
		struct connman_rtnl *rtnl = list->data;

		if (rtnl->delgateway)
			rtnl->delgateway(index, gatewaystr);
	}
}

static inline void print_ether(struct rtattr *attr, const char *name)
{
	int len = (int) RTA_PAYLOAD(attr);

	if (len == ETH_ALEN) {
		struct ether_addr eth;
		memcpy(&eth, RTA_DATA(attr), ETH_ALEN);
		print("  attr %s (len %d) %s\n", name, len, ether_ntoa(&eth));
	} else
		print("  attr %s (len %d)\n", name, len);
}

static inline void print_inet(struct rtattr *attr, const char *name,
							unsigned char family)
{
	int len = (int) RTA_PAYLOAD(attr);

	if (family == AF_INET && len == sizeof(struct in_addr)) {
		struct in_addr addr;
		addr = *((struct in_addr *) RTA_DATA(attr));
		print("  attr %s (len %d) %s\n", name, len, inet_ntoa(addr));
	} else
		print("  attr %s (len %d)\n", name, len);
}

static inline void print_string(struct rtattr *attr, const char *name)
{
	print("  attr %s (len %d) %s\n", name, (int) RTA_PAYLOAD(attr),
						(char *) RTA_DATA(attr));
}

static inline void print_byte(struct rtattr *attr, const char *name)
{
	print("  attr %s (len %d) 0x%02x\n", name, (int) RTA_PAYLOAD(attr),
					*((unsigned char *) RTA_DATA(attr)));
}

static inline void print_integer(struct rtattr *attr, const char *name)
{
	print("  attr %s (len %d) %d\n", name, (int) RTA_PAYLOAD(attr),
						*((int *) RTA_DATA(attr)));
}

static inline void print_attr(struct rtattr *attr, const char *name)
{
	int len = (int) RTA_PAYLOAD(attr);

	if (name && len > 0)
		print("  attr %s (len %d)\n", name, len);
	else
		print("  attr %d (len %d)\n", attr->rta_type, len);
}

static void rtnl_link(struct nlmsghdr *hdr)
{
	struct ifinfomsg *msg;
	struct rtattr *attr;
	int bytes;

	msg = (struct ifinfomsg *) NLMSG_DATA(hdr);
	bytes = IFLA_PAYLOAD(hdr);

	print("ifi_index %d ifi_flags 0x%04x", msg->ifi_index, msg->ifi_flags);

	for (attr = IFLA_RTA(msg); RTA_OK(attr, bytes);
					attr = RTA_NEXT(attr, bytes)) {
		switch (attr->rta_type) {
		case IFLA_ADDRESS:
			print_ether(attr, "address");
			break;
		case IFLA_BROADCAST:
			print_ether(attr, "broadcast");
			break;
		case IFLA_IFNAME:
			print_string(attr, "ifname");
			break;
		case IFLA_MTU:
			print_integer(attr, "mtu");
			break;
		case IFLA_LINK:
			print_attr(attr, "link");
			break;
		case IFLA_QDISC:
			print_attr(attr, "qdisc");
			break;
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Lorn Potter committed
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		case IFLA_STATS64:
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			print_attr(attr, "stats");
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			break;
		case IFLA_COST:
			print_attr(attr, "cost");
			break;
		case IFLA_PRIORITY:
			print_attr(attr, "priority");
			break;
		case IFLA_MASTER:
			print_attr(attr, "master");
			break;
		case IFLA_WIRELESS:
			print_attr(attr, "wireless");
			break;
		case IFLA_PROTINFO:
			print_attr(attr, "protinfo");
			break;
		case IFLA_TXQLEN:
			print_integer(attr, "txqlen");
			break;
		case IFLA_MAP:
			print_attr(attr, "map");
			break;
		case IFLA_WEIGHT:
			print_attr(attr, "weight");
			break;
		case IFLA_OPERSTATE:
			print_byte(attr, "operstate");
			break;
		case IFLA_LINKMODE:
			print_byte(attr, "linkmode");
			break;
		default:
			print_attr(attr, NULL);
			break;
		}
	}
}

static void rtnl_newlink(struct nlmsghdr *hdr)
{
	struct ifinfomsg *msg = (struct ifinfomsg *) NLMSG_DATA(hdr);

	rtnl_link(hdr);

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	if (hdr->nlmsg_type == IFLA_WIRELESS)
		connman_warn_once("Obsolete WEXT WiFi driver detected");

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	process_newlink(msg->ifi_type, msg->ifi_index, msg->ifi_flags,
				msg->ifi_change, msg, IFA_PAYLOAD(hdr));
}

static void rtnl_dellink(struct nlmsghdr *hdr)
{
	struct ifinfomsg *msg = (struct ifinfomsg *) NLMSG_DATA(hdr);

	rtnl_link(hdr);

	process_dellink(msg->ifi_type, msg->ifi_index, msg->ifi_flags,
				msg->ifi_change, msg, IFA_PAYLOAD(hdr));
}

static void rtnl_addr(struct nlmsghdr *hdr)
{
	struct ifaddrmsg *msg;
	struct rtattr *attr;
	int bytes;

	msg = (struct ifaddrmsg *) NLMSG_DATA(hdr);
	bytes = IFA_PAYLOAD(hdr);

	print("ifa_family %d ifa_index %d", msg->ifa_family, msg->ifa_index);

	for (attr = IFA_RTA(msg); RTA_OK(attr, bytes);
					attr = RTA_NEXT(attr, bytes)) {
		switch (attr->rta_type) {
		case IFA_ADDRESS:
			print_inet(attr, "address", msg->ifa_family);
			break;
		case IFA_LOCAL:
			print_inet(attr, "local", msg->ifa_family);
			break;
		case IFA_LABEL:
			print_string(attr, "label");
			break;
		case IFA_BROADCAST:
			print_inet(attr, "broadcast", msg->ifa_family);
			break;
		case IFA_ANYCAST:
			print_attr(attr, "anycast");
			break;
		case IFA_CACHEINFO:
			print_attr(attr, "cacheinfo");
			break;
		case IFA_MULTICAST:
			print_attr(attr, "multicast");
			break;
		default:
			print_attr(attr, NULL);
			break;
		}
	}
}

static void rtnl_newaddr(struct nlmsghdr *hdr)
{
	struct ifaddrmsg *msg = (struct ifaddrmsg *) NLMSG_DATA(hdr);

	rtnl_addr(hdr);

	process_newaddr(msg->ifa_family, msg->ifa_prefixlen, msg->ifa_index,
						msg, IFA_PAYLOAD(hdr));
}

static void rtnl_deladdr(struct nlmsghdr *hdr)
{
	struct ifaddrmsg *msg = (struct ifaddrmsg *) NLMSG_DATA(hdr);

	rtnl_addr(hdr);

	process_deladdr(msg->ifa_family, msg->ifa_prefixlen, msg->ifa_index,
						msg, IFA_PAYLOAD(hdr));
}

static void rtnl_route(struct nlmsghdr *hdr)
{
	struct rtmsg *msg;
	struct rtattr *attr;
	int bytes;

	msg = (struct rtmsg *) NLMSG_DATA(hdr);
	bytes = RTM_PAYLOAD(hdr);

	print("rtm_family %d rtm_table %d rtm_protocol %d",
			msg->rtm_family, msg->rtm_table, msg->rtm_protocol);
	print("rtm_scope %d rtm_type %d rtm_flags 0x%04x",
				msg->rtm_scope, msg->rtm_type, msg->rtm_flags);

	for (attr = RTM_RTA(msg); RTA_OK(attr, bytes);
					attr = RTA_NEXT(attr, bytes)) {
		switch (attr->rta_type) {
		case RTA_DST:
			print_inet(attr, "dst", msg->rtm_family);
			break;
		case RTA_SRC:
			print_inet(attr, "src", msg->rtm_family);
			break;
		case RTA_IIF:
			print_string(attr, "iif");
			break;
		case RTA_OIF:
			print_integer(attr, "oif");
			break;
		case RTA_GATEWAY:
			print_inet(attr, "gateway", msg->rtm_family);
			break;
		case RTA_PRIORITY:
			print_attr(attr, "priority");
			break;
		case RTA_PREFSRC:
			print_inet(attr, "prefsrc", msg->rtm_family);
			break;
		case RTA_METRICS:
			print_attr(attr, "metrics");
			break;
		case RTA_TABLE:
			print_integer(attr, "table");
			break;
		default:
			print_attr(attr, NULL);
			break;
		}
	}
}

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static bool is_route_rtmsg(struct rtmsg *msg)
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{
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	if (msg->rtm_flags & RTM_F_CLONED)
		return false;
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	if (msg->rtm_table != RT_TABLE_MAIN)
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		return false;
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	if (msg->rtm_protocol != RTPROT_BOOT &&
			msg->rtm_protocol != RTPROT_KERNEL)
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		return false;
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	if (msg->rtm_type != RTN_UNICAST)
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		return false;
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	return true;
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}

static void rtnl_newroute(struct nlmsghdr *hdr)
{
	struct rtmsg *msg = (struct rtmsg *) NLMSG_DATA(hdr);

	rtnl_route(hdr);

	if (is_route_rtmsg(msg))
		process_newroute(msg->rtm_family, msg->rtm_scope,
						msg, RTM_PAYLOAD(hdr));
}

static void rtnl_delroute(struct nlmsghdr *hdr)
{
	struct rtmsg *msg = (struct rtmsg *) NLMSG_DATA(hdr);

	rtnl_route(hdr);

	if (is_route_rtmsg(msg))
		process_delroute(msg->rtm_family, msg->rtm_scope,
						msg, RTM_PAYLOAD(hdr));
}

static void *rtnl_nd_opt_rdnss(struct nd_opt_hdr *opt, guint32 *lifetime,
			       int *nr_servers)
{
	guint32 *optint = (void *)opt;

	if (opt->nd_opt_len < 3)
		return NULL;

	if (*lifetime > ntohl(optint[1]))
		*lifetime = ntohl(optint[1]);

	/* nd_opt_len is in units of 8 bytes. The header is 1 unit (8 bytes)
	   and each address is another 2 units (16 bytes).
	   So the number of addresses (given rounding) is nd_opt_len/2 */
	*nr_servers = opt->nd_opt_len / 2;

	/* And they start 8 bytes into the packet, or two guint32s in. */
	return optint + 2;
}

static const char **rtnl_nd_opt_dnssl(struct nd_opt_hdr *opt, guint32 *lifetime)
{
	const char **domains = NULL;
	guint32 *optint = (void *)opt;
	unsigned char *optc = (void *)&optint[2];
	int data_len = (opt->nd_opt_len * 8) - 8;
	int nr_domains = 0;
	int i, tmp;

	if (*lifetime > ntohl(optint[1]))
		*lifetime = ntohl(optint[1]);

	/* Turn it into normal strings by converting the length bytes into '.',
	   and count how many search domains there are while we're at it. */
	i = 0;
	while (i < data_len) {
		if (optc[i] > 0x3f) {
			DBG("DNSSL contains compressed elements in violation of RFC6106");
			return NULL;
		}

		if (optc[i] == 0) {
			nr_domains++;
			i++;
			/* Check for double zero */
			if (i < data_len && optc[i] == 0)
				break;
			continue;
		}

		tmp = i;
		i += optc[i] + 1;

		if (i >= data_len) {
			DBG("DNSSL data overflows option length");
			return NULL;
		}

		optc[tmp] = '.';
	}

	domains = g_try_new0(const char *, nr_domains + 1);
	if (!domains)
		return NULL;

	/* Now point to the normal strings, missing out the leading '.' that
	   each of them will have now. */
	for (i = 0; i < nr_domains; i++) {
		domains[i] = (char *)optc + 1;
		optc += strlen((char *)optc) + 1;
	}

	return domains;
}

static void rtnl_newnduseropt(struct nlmsghdr *hdr)
{
	struct nduseroptmsg *msg = (struct nduseroptmsg *) NLMSG_DATA(hdr);
	struct nd_opt_hdr *opt;
	guint32 lifetime = -1;
	const char **domains = NULL;
	struct in6_addr *servers = NULL;
	int i, nr_servers = 0;
	int msglen = msg->nduseropt_opts_len;
	int index;

	DBG("family %d index %d len %d type %d code %d",
		msg->nduseropt_family, msg->nduseropt_ifindex,
		msg->nduseropt_opts_len, msg->nduseropt_icmp_type,
		msg->nduseropt_icmp_code);

	if (msg->nduseropt_family != AF_INET6 ||
			msg->nduseropt_icmp_type != ND_ROUTER_ADVERT ||
			msg->nduseropt_icmp_code != 0)
		return;

	index = msg->nduseropt_ifindex;
	if (index < 0)
		return;

	for (opt = (void *)&msg[1];
			msglen > 0;
			msglen -= opt->nd_opt_len * 8,
			opt = ((void *)opt) + opt->nd_opt_len*8) {

		DBG("remaining %d nd opt type %d len %d\n",
			msglen, opt->nd_opt_type, opt->nd_opt_len);

		if (opt->nd_opt_type == 25) { /* ND_OPT_RDNSS */
			char buf[40];

			servers = rtnl_nd_opt_rdnss(opt, &lifetime,
								&nr_servers);
			for (i = 0; i < nr_servers; i++) {
				if (!inet_ntop(AF_INET6, servers + i, buf,
								sizeof(buf)))
					continue;

				connman_resolver_append_lifetime(index,
							NULL, buf, lifetime);
			}

		} else if (opt->nd_opt_type == 31) { /* ND_OPT_DNSSL */
			g_free(domains);

			domains = rtnl_nd_opt_dnssl(opt, &lifetime);
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			for (i = 0; domains && domains[i]; i++)
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				connman_resolver_append_lifetime(index,
						domains[i], NULL, lifetime);
		}
	}

	g_free(domains);
}

static const char *type2string(uint16_t type)
{
	switch (type) {
	case NLMSG_NOOP:
		return "NOOP";
	case NLMSG_ERROR:
		return "ERROR";
	case NLMSG_DONE:
		return "DONE";
	case NLMSG_OVERRUN:
		return "OVERRUN";
	case RTM_GETLINK:
		return "GETLINK";
	case RTM_NEWLINK:
		return "NEWLINK";
	case RTM_DELLINK:
		return "DELLINK";
	case RTM_GETADDR:
		return "GETADDR";
	case RTM_NEWADDR:
		return "NEWADDR";
	case RTM_DELADDR:
		return "DELADDR";
	case RTM_GETROUTE:
		return "GETROUTE";
	case RTM_NEWROUTE:
		return "NEWROUTE";
	case RTM_DELROUTE:
		return "DELROUTE";
	case RTM_NEWNDUSEROPT:
		return "NEWNDUSEROPT";
	default:
		return "UNKNOWN";
	}
}

static GIOChannel *channel = NULL;
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static guint channel_watch = 0;
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struct rtnl_request {
	struct nlmsghdr hdr;
	struct rtgenmsg msg;
};
#define RTNL_REQUEST_SIZE  (sizeof(struct nlmsghdr) + sizeof(struct rtgenmsg))

static GSList *request_list = NULL;
static guint32 request_seq = 0;

static struct rtnl_request *find_request(guint32 seq)
{
	GSList *list;

	for (list = request_list; list; list = list->next) {
		struct rtnl_request *req = list->data;

		if (req->hdr.nlmsg_seq == seq)
			return req;
	}

	return NULL;
}

static int send_request(struct rtnl_request *req)
{
	struct sockaddr_nl addr;
	int sk;

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//	DBG("%s len %d type %d flags 0x%04x seq %d",
//				type2string(req->hdr.nlmsg_type),
//				req->hdr.nlmsg_len, req->hdr.nlmsg_type,
//				req->hdr.nlmsg_flags, req->hdr.nlmsg_seq);
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	sk = g_io_channel_unix_get_fd(channel);

	memset(&addr, 0, sizeof(addr));
	addr.nl_family = AF_NETLINK;

	return sendto(sk, req, req->hdr.nlmsg_len, 0,
				(struct sockaddr *) &addr, sizeof(addr));
}

static int queue_request(struct rtnl_request *req)
{
	request_list = g_slist_append(request_list, req);

	if (g_slist_length(request_list) > 1)
		return 0;

	return send_request(req);
}

static int process_response(guint32 seq)
{
	struct rtnl_request *req;

1365
//	DBG("seq %d", seq);
1366 1367

	req = find_request(seq);
1368
	if (req) {
1369 1370 1371 1372 1373
		request_list = g_slist_remove(request_list, req);
		g_free(req);
	}

	req = g_slist_nth_data(request_list, 0);
1374
	if (!req)
1375 1376 1377 1378 1379 1380 1381
		return 0;

	return send_request(req);
}

static void rtnl_message(void *buf, size_t len)
{
1382
//	DBG("buf %p len %zd", buf, len);
1383 1384 1385 1386 1387 1388 1389 1390

	while (len > 0) {
		struct nlmsghdr *hdr = buf;
		struct nlmsgerr *err;

		if (!NLMSG_OK(hdr, len))
			break;

1391 1392 1393 1394 1395
//		DBG("%s len %d type %d flags 0x%04x seq %d pid %d",
//					type2string(hdr->nlmsg_type),
//					hdr->nlmsg_len, hdr->nlmsg_type,
//					hdr->nlmsg_flags, hdr->nlmsg_seq,
//					hdr->nlmsg_pid);
1396 1397 1398 1399 1400 1401 1402 1403 1404 1405 1406 1407 1408 1409 1410 1411 1412 1413 1414 1415 1416 1417 1418 1419 1420 1421 1422 1423 1424 1425 1426 1427 1428 1429 1430 1431 1432 1433 1434 1435 1436

		switch (hdr->nlmsg_type) {
		case NLMSG_NOOP:
		case NLMSG_OVERRUN:
			return;
		case NLMSG_DONE:
			process_response(hdr->nlmsg_seq);
			return;
		case NLMSG_ERROR:
			err = NLMSG_DATA(hdr);
			DBG("error %d (%s)", -err->error,
						strerror(-err->error));
			return;
		case RTM_NEWLINK:
			rtnl_newlink(hdr);
			break;
		case RTM_DELLINK:
			rtnl_dellink(hdr);
			break;
		case RTM_NEWADDR:
			rtnl_newaddr(hdr);
			break;
		case RTM_DELADDR:
			rtnl_deladdr(hdr);
			break;
		case RTM_NEWROUTE:
			rtnl_newroute(hdr);
			break;
		case RTM_DELROUTE:
			rtnl_delroute(hdr);
			break;
		case RTM_NEWNDUSEROPT:
			rtnl_newnduseropt(hdr);
			break;
		}

		len -= hdr->nlmsg_len;
		buf += hdr->nlmsg_len;
	}
}

1437
static gboolean netlink_event(GIOChannel *chan, GIOCondition cond, gpointer data)
1438 1439 1440 1441 1442 1443 1444 1445 1446 1447 1448 1449 1450 1451 1452 1453 1454 1455 1456 1457 1458 1459 1460 1461 1462 1463 1464 1465 1466 1467 1468 1469 1470 1471 1472 1473 1474 1475 1476 1477 1478
{
	unsigned char buf[4096];
	struct sockaddr_nl nladdr;
	socklen_t addr_len = sizeof(nladdr);
	ssize_t status;
	int fd;

	if (cond & (G_IO_NVAL | G_IO_HUP | G_IO_ERR))
		return FALSE;

	memset(buf, 0, sizeof(buf));
	memset(&nladdr, 0, sizeof(nladdr));

	fd = g_io_channel_unix_get_fd(chan);

	status = recvfrom(fd, buf, sizeof(buf), 0,
                       (struct sockaddr *) &nladdr, &addr_len);
	if (status < 0) {
		if (errno == EINTR || errno == EAGAIN)
			return TRUE;

		return FALSE;
	}

	if (status == 0)
		return FALSE;

	if (nladdr.nl_pid != 0) { /* not sent by kernel, ignore */
		DBG("Received msg from %u, ignoring it", nladdr.nl_pid);
		return TRUE;
	}

	rtnl_message(buf, status);

	return TRUE;
}

static int send_getlink(void)
{
	struct rtnl_request *req;

1479
//	DBG("");
1480 1481

	req = g_try_malloc0(RTNL_REQUEST_SIZE);
1482
	if (!req)
1483 1484 1485 1486 1487 1488 1489 1490 1491 1492 1493 1494 1495 1496 1497 1498 1499 1500 1501
		return -ENOMEM;

	req->hdr.nlmsg_len = RTNL_REQUEST_SIZE;
	req->hdr.nlmsg_type = RTM_GETLINK;
	req->hdr.nlmsg_flags = NLM_F_REQUEST | NLM_F_DUMP;
	req->hdr.nlmsg_pid = 0;
	req->hdr.nlmsg_seq = request_seq++;
	req->msg.rtgen_family = AF_INET;

	return queue_request(req);
}

static int send_getaddr(void)
{
	struct rtnl_request *req;

	DBG("");

	req = g_try_malloc0(RTNL_REQUEST_SIZE);
1502
	if (!req)
1503 1504 1505 1506 1507 1508 1509 1510 1511 1512 1513 1514 1515 1516 1517 1518 1519 1520 1521
		return -ENOMEM;

	req->hdr.nlmsg_len = RTNL_REQUEST_SIZE;
	req->hdr.nlmsg_type = RTM_GETADDR;
	req->hdr.nlmsg_flags = NLM_F_REQUEST | NLM_F_DUMP;
	req->hdr.nlmsg_pid = 0;
	req->hdr.nlmsg_seq = request_seq++;
	req->msg.rtgen_family = AF_INET;

	return queue_request(req);
}

static int send_getroute(void)
{
	struct rtnl_request *req;

	DBG("");

	req = g_try_malloc0(RTNL_REQUEST_SIZE);
1522
	if (!req)
1523 1524 1525 1526 1527 1528 1529 1530 1531 1532 1533 1534 1535 1536 1537 1538 1539 1540 1541 1542 1543 1544 1545 1546 1547 1548 1549 1550 1551 1552 1553 1554 1555 1556 1557 1558 1559 1560 1561 1562 1563 1564 1565 1566 1567 1568 1569 1570 1571 1572 1573 1574 1575 1576 1577 1578 1579 1580 1581 1582 1583 1584 1585 1586 1587 1588 1589 1590 1591 1592
		return -ENOMEM;

	req->hdr.nlmsg_len = RTNL_REQUEST_SIZE;
	req->hdr.nlmsg_type = RTM_GETROUTE;
	req->hdr.nlmsg_flags = NLM_F_REQUEST | NLM_F_DUMP;
	req->hdr.nlmsg_pid = 0;
	req->hdr.nlmsg_seq = request_seq++;
	req->msg.rtgen_family = AF_INET;

	return queue_request(req);
}

static gboolean update_timeout_cb(gpointer user_data)
{
	__connman_rtnl_request_update();

	return TRUE;
}

static void update_interval_callback(guint min)
{
	if (update_timeout > 0)
		g_source_remove(update_timeout);

	if (min < G_MAXUINT) {
		update_interval = min;
		update_timeout = g_timeout_add_seconds(update_interval,
						update_timeout_cb, NULL);
	} else {
		update_timeout = 0;
		update_interval = G_MAXUINT;
	}
}

static gint compare_interval(gconstpointer a, gconstpointer b)
{
	guint val_a = GPOINTER_TO_UINT(a);
	guint val_b = GPOINTER_TO_UINT(b);

	return val_a - val_b;
}

unsigned int __connman_rtnl_update_interval_add(unsigned int interval)
{
	guint min;

	if (interval == 0)
		return 0;

	update_list = g_slist_insert_sorted(update_list,
			GUINT_TO_POINTER(interval), compare_interval);

	min = GPOINTER_TO_UINT(g_slist_nth_data(update_list, 0));
	if (min < update_interval) {
		update_interval_callback(min);
		__connman_rtnl_request_update();
	}

	return update_interval;
}

unsigned int __connman_rtnl_update_interval_remove(unsigned int interval)
{
	guint min = G_MAXUINT;

	if (interval == 0)
		return 0;

	update_list = g_slist_remove(update_list, GINT_TO_POINTER(interval));

1593
	if (update_list)
1594 1595 1596 1597 1598 1599 1600 1601 1602 1603 1604 1605 1606 1607 1608 1609 1610 1611 1612 1613 1614 1615 1616 1617 1618 1619 1620 1621 1622 1623 1624 1625 1626 1627 1628 1629 1630 1631 1632 1633 1634 1635 1636 1637
		min = GPOINTER_TO_UINT(g_slist_nth_data(update_list, 0));

	if (min > update_interval)
		update_interval_callback(min);

	return min;
}

int __connman_rtnl_request_update(void)
{
	return send_getlink();
}

int __connman_rtnl_init(void)
{
	struct sockaddr_nl addr;
	int sk;

	DBG("");

	interface_list = g_hash_table_new_full(g_direct_hash, g_direct_equal,
							NULL, free_interface);

	sk = socket(PF_NETLINK, SOCK_DGRAM | SOCK_CLOEXEC, NETLINK_ROUTE);
	if (sk < 0)
		return -1;

	memset(&addr, 0, sizeof(addr));
	addr.nl_family = AF_NETLINK;
	addr.nl_groups = RTMGRP_LINK | RTMGRP_IPV4_IFADDR | RTMGRP_IPV4_ROUTE |
				RTMGRP_IPV6_IFADDR | RTMGRP_IPV6_ROUTE |
				(1<<(RTNLGRP_ND_USEROPT-1));

	if (bind(sk, (struct sockaddr *) &addr, sizeof(addr)) < 0) {
		close(sk);
		return -1;
	}

	channel = g_io_channel_unix_new(sk);
	g_io_channel_set_close_on_unref(channel, TRUE);

	g_io_channel_set_encoding(channel, NULL, NULL);
	g_io_channel_set_buffered(channel, FALSE);

1638 1639 1640
	channel_watch = g_io_add_watch(channel,
				G_IO_IN | G_IO_NVAL | G_IO_HUP | G_IO_ERR,
				netlink_event, NULL);
1641 1642 1643 1644 1645 1646 1647 1648 1649 1650 1651 1652 1653 1654 1655 1656 1657 1658 1659 1660 1661 1662 1663 1664 1665 1666 1667 1668 1669 1670 1671 1672 1673 1674 1675 1676 1677 1678 1679 1680 1681 1682 1683 1684 1685 1686 1687 1688 1689

	return 0;
}

void __connman_rtnl_start(void)
{
	DBG("");

	send_getlink();
	send_getaddr();
	send_getroute();
}

void __connman_rtnl_cleanup(void)
{
	GSList *list;

	DBG("");

	for (list = watch_list; list; list = list->next) {
		struct watch_data *watch = list->data;

		DBG("removing watch %d", watch->id);

		g_free(watch);
		list->data = NULL;
	}

	g_slist_free(watch_list);
	watch_list = NULL;

	g_slist_free(update_list);
	update_list = NULL;

	for (list = request_list; list; list = list->next) {
		struct rtnl_request *req = list->data;

		DBG("%s len %d type %d flags 0x%04x seq %d",
				type2string(req->hdr.nlmsg_type),
				req->hdr.nlmsg_len, req->hdr.nlmsg_type,
				req->hdr.nlmsg_flags, req->hdr.nlmsg_seq);

		g_free(req);
		list->data = NULL;
	}

	g_slist_free(request_list);
	request_list = NULL;

1690 1691 1692 1693 1694
	if (channel_watch) {
		g_source_remove(channel_watch);
		channel_watch = 0;
	}

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	g_io_channel_shutdown(channel, TRUE, NULL);
	g_io_channel_unref(channel);

	channel = NULL;

	g_hash_table_destroy(interface_list);
}