#include <config.h>
#endif
+#include <errno.h>
#include <stdio.h>
+#include <stdlib.h>
#include <string.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include "connman.h"
#include <connman/log.h>
#include <connman/ipconfig.h>
+#include "gweb/gweb.h"
static int tunnel_created;
static int tunnel_pending;
static char *tunnel_ip_address;
+static GWeb *web;
+static guint web_request_id;
+static unsigned int newlink_watch;
+static unsigned int newlink_flags;
+static int newlink_timeout_id;
-#define NLMSG_TAIL(nmsg) \
- ((struct rtattr *) (((void *)(nmsg)) + NLMSG_ALIGN((nmsg)->nlmsg_len)))
+#define STATUS_URL "http://ipv6.connman.net/online/status.html"
#ifndef IP_DF
#define IP_DF 0x4000 /* Flag: "Don't Fragment" */
#endif
-struct rtnl_handle {
- int fd;
- struct sockaddr_nl local;
- struct sockaddr_nl peer;
- __u32 seq;
- __u32 dump;
-};
-
-static int addattr32(struct nlmsghdr *n, int maxlen, int type, __u32 data)
-{
- int len = RTA_LENGTH(4);
- struct rtattr *rta;
- if (NLMSG_ALIGN(n->nlmsg_len) + len > (unsigned int)maxlen) {
- DBG("Error! max allowed bound %d exceeded", maxlen);
- return -1;
- }
- rta = NLMSG_TAIL(n);
- rta->rta_type = type;
- rta->rta_len = len;
- memcpy(RTA_DATA(rta), &data, 4);
- n->nlmsg_len = NLMSG_ALIGN(n->nlmsg_len) + len;
-
- return 0;
-}
-
-static int addattr_l(struct nlmsghdr *n, int maxlen, int type,
- const void *data, int alen)
-{
- int len = RTA_LENGTH(alen);
- struct rtattr *rta;
-
- if (NLMSG_ALIGN(n->nlmsg_len) + RTA_ALIGN(len) >
- (unsigned int)maxlen) {
- DBG("addattr_l message exceeded bound of %d", maxlen);
- return -1;
- }
- rta = NLMSG_TAIL(n);
- rta->rta_type = type;
- rta->rta_len = len;
- memcpy(RTA_DATA(rta), data, alen);
- n->nlmsg_len = NLMSG_ALIGN(n->nlmsg_len) + RTA_ALIGN(len);
-
- return 0;
-}
-
-static void rtnl_close(struct rtnl_handle *rth)
-{
- if (rth->fd >= 0) {
- close(rth->fd);
- rth->fd = -1;
- }
-}
-
-static int rtnl_open(struct rtnl_handle *rth)
-{
- socklen_t addr_len;
- int sndbuf = 1024;
-
- memset(rth, 0, sizeof(*rth));
-
- rth->fd = socket(AF_NETLINK, SOCK_RAW, NETLINK_ROUTE);
- if (rth->fd < 0) {
- connman_error("Can not open netlink socket: %s",
- strerror(errno));
- return -1;
- }
-
- if (setsockopt(rth->fd, SOL_SOCKET, SO_SNDBUF, &sndbuf,
- sizeof(sndbuf)) < 0) {
- connman_error("SO_SNDBUF: %s", strerror(errno));
- return -1;
- }
-
- memset(&rth->local, 0, sizeof(rth->local));
- rth->local.nl_family = AF_NETLINK;
- rth->local.nl_groups = 0;
-
- if (bind(rth->fd, (struct sockaddr *)&rth->local,
- sizeof(rth->local)) < 0) {
- connman_error("Can not bind netlink socket: %s",
- strerror(errno));
- return -1;
- }
- addr_len = sizeof(rth->local);
- if (getsockname(rth->fd, (struct sockaddr *)&rth->local,
- &addr_len) < 0) {
- connman_error("Can not getsockname: %s", strerror(errno));
- return -1;
- }
- if (addr_len != sizeof(rth->local)) {
- connman_error("Wrong address length %d", addr_len);
- return -1;
- }
- if (rth->local.nl_family != AF_NETLINK) {
- connman_error("Wrong address family %d", rth->local.nl_family);
- return -1;
- }
- rth->seq = time(NULL);
-
- return 0;
-}
-
-static int rtnl_talk(struct rtnl_handle *rtnl, struct nlmsghdr *n)
-{
- struct sockaddr_nl nladdr;
- struct iovec iov = {
- .iov_base = (void *)n,
- .iov_len = n->nlmsg_len
- };
- struct msghdr msg = {
- .msg_name = &nladdr,
- .msg_namelen = sizeof(nladdr),
- .msg_iov = &iov,
- .msg_iovlen = 1,
- };
- unsigned seq;
- int err;
-
- memset(&nladdr, 0, sizeof(nladdr));
- nladdr.nl_family = AF_NETLINK;
-
- n->nlmsg_seq = seq = ++rtnl->seq;
- n->nlmsg_flags |= NLM_F_ACK;
-
- err = sendmsg(rtnl->fd, &msg, 0);
- if (err < 0) {
- connman_error("Can not talk to rtnetlink");
- return err;
- }
-
- return 0;
-}
-
static int tunnel_create(struct in_addr *addr)
{
struct ip_tunnel_parm p;
strncpy(ifr.ifr_name, "sit0", IFNAMSIZ);
ifr.ifr_ifru.ifru_data = (void *)&p;
- fd = socket(AF_INET, SOCK_DGRAM, 0);
+ fd = socket(AF_INET, SOCK_DGRAM | SOCK_CLOEXEC, 0);
ret = ioctl(fd, SIOCADDTUNNEL, &ifr);
if (ret)
connman_error("add tunnel %s failed: %s", ifr.ifr_name,
strncpy(ifr.ifr_name, "tun6to4", IFNAMSIZ);
ifr.ifr_ifru.ifru_data = (void *)&p;
- fd = socket(AF_INET, SOCK_DGRAM, 0);
+ fd = socket(AF_INET, SOCK_DGRAM | SOCK_CLOEXEC, 0);
if (fd < 0) {
connman_error("socket failed: %s", strerror(errno));
return;
static int tunnel_add_route()
{
- struct rtnl_handle rth;
+ struct __connman_inet_rtnl_handle rth;
struct in6_addr addr6;
int index;
int ret = 0;
- struct {
- struct nlmsghdr n;
- struct rtmsg r;
- char buf[1024];
- } req;
-
/* ip -6 route add ::/0 via ::192.88.99.1 dev tun6to4 metric 1 */
index = if_nametoindex("tun6to4");
return -1;
}
- memset(&req, 0, sizeof(req));
+ memset(&rth, 0, sizeof(rth));
- req.n.nlmsg_len = NLMSG_LENGTH(sizeof(struct rtmsg));
- req.n.nlmsg_flags = NLM_F_REQUEST | NLM_F_CREATE | NLM_F_EXCL;
- req.n.nlmsg_type = RTM_NEWROUTE;
- req.r.rtm_family = AF_INET6;
- req.r.rtm_table = RT_TABLE_MAIN;
- req.r.rtm_protocol = RTPROT_BOOT;
- req.r.rtm_scope = RT_SCOPE_UNIVERSE;
- req.r.rtm_type = RTN_UNICAST;
- req.r.rtm_dst_len = 0;
+ rth.req.n.nlmsg_len = NLMSG_LENGTH(sizeof(struct rtmsg));
+ rth.req.n.nlmsg_flags = NLM_F_REQUEST | NLM_F_CREATE | NLM_F_EXCL;
+ rth.req.n.nlmsg_type = RTM_NEWROUTE;
+ rth.req.u.r.rt.rtm_family = AF_INET6;
+ rth.req.u.r.rt.rtm_table = RT_TABLE_MAIN;
+ rth.req.u.r.rt.rtm_protocol = RTPROT_BOOT;
+ rth.req.u.r.rt.rtm_scope = RT_SCOPE_UNIVERSE;
+ rth.req.u.r.rt.rtm_type = RTN_UNICAST;
+ rth.req.u.r.rt.rtm_dst_len = 0;
inet_pton(AF_INET6, "::192.88.99.1", &addr6);
- addattr_l(&req.n, sizeof(req), RTA_GATEWAY, &addr6.s6_addr, 16);
- addattr32(&req.n, sizeof(req), RTA_OIF, index);
- addattr32(&req.n, sizeof(req), RTA_PRIORITY, 1);
+ __connman_inet_rtnl_addattr_l(&rth.req.n, sizeof(rth.req), RTA_GATEWAY,
+ &addr6.s6_addr, 16);
+ __connman_inet_rtnl_addattr32(&rth.req.n, sizeof(rth.req), RTA_OIF,
+ index);
+ __connman_inet_rtnl_addattr32(&rth.req.n, sizeof(rth.req),
+ RTA_PRIORITY, 1);
- ret = rtnl_open(&rth);
+ ret = __connman_inet_rtnl_open(&rth);
if (ret < 0)
goto done;
- ret = rtnl_talk(&rth, &req.n);
+ ret = __connman_inet_rtnl_send(&rth, &rth.req.n);
done:
- rtnl_close(&rth);
+ __connman_inet_rtnl_close(&rth);
return ret;
}
static int tunnel_set_addr(unsigned int a, unsigned int b,
unsigned int c, unsigned int d)
{
- struct rtnl_handle rth;
+ struct __connman_inet_rtnl_handle rth;
struct in6_addr addr6;
char *ip6addr;
int ret;
- struct {
- struct nlmsghdr n;
- struct ifaddrmsg ifa;
- char buf[256];
- } req;
-
/* ip -6 addr add dev tun6to4 2002:0102:0304::1/64 */
- memset(&req, 0, sizeof(req));
+ memset(&rth, 0, sizeof(rth));
- req.n.nlmsg_len = NLMSG_LENGTH(sizeof(struct ifaddrmsg));
- req.n.nlmsg_flags = NLM_F_REQUEST | NLM_F_CREATE | NLM_F_EXCL;
- req.n.nlmsg_type = RTM_NEWADDR;
- req.ifa.ifa_family = AF_INET6;
- req.ifa.ifa_prefixlen = 64;
- req.ifa.ifa_index = if_nametoindex("tun6to4");
- if (req.ifa.ifa_index == 0) {
+ rth.req.n.nlmsg_len = NLMSG_LENGTH(sizeof(struct ifaddrmsg));
+ rth.req.n.nlmsg_flags = NLM_F_REQUEST | NLM_F_CREATE | NLM_F_EXCL;
+ rth.req.n.nlmsg_type = RTM_NEWADDR;
+ rth.req.u.i.ifa.ifa_family = AF_INET6;
+ rth.req.u.i.ifa.ifa_prefixlen = 64;
+ rth.req.u.i.ifa.ifa_index = if_nametoindex("tun6to4");
+ if (rth.req.u.i.ifa.ifa_index == 0) {
connman_error("Can not find device tun6to4");
ret = -1;
goto done;
DBG("ipv6 address %s", ip6addr);
g_free(ip6addr);
- addattr_l(&req.n, sizeof(req), IFA_LOCAL, &addr6.s6_addr, 16);
- addattr_l(&req.n, sizeof(req), IFA_ADDRESS, &addr6.s6_addr, 16);
+ __connman_inet_rtnl_addattr_l(&rth.req.n, sizeof(rth.req), IFA_LOCAL,
+ &addr6.s6_addr, 16);
+ __connman_inet_rtnl_addattr_l(&rth.req.n, sizeof(rth.req), IFA_ADDRESS,
+ &addr6.s6_addr, 16);
- ret = rtnl_open(&rth);
+ ret = __connman_inet_rtnl_open(&rth);
if (ret < 0)
goto done;
- ret = rtnl_talk(&rth, &req.n);
+ ret = __connman_inet_rtnl_send(&rth, &rth.req.n);
done:
- rtnl_close(&rth);
+ __connman_inet_rtnl_close(&rth);
return ret;
}
+static gboolean unref_web(gpointer user_data)
+{
+ g_web_unref(web);
+ return FALSE;
+}
+
+static gboolean web_result(GWebResult *result, gpointer user_data)
+{
+ guint16 status;
+
+ if (web_request_id == 0)
+ return FALSE;
+
+ status = g_web_result_get_status(result);
+
+ DBG("status %u", status);
+
+ if (status >= 400 && status < 500)
+ tunnel_destroy();
+ else
+ tunnel_pending = 0;
+
+ web_request_id = 0;
+
+ g_timeout_add_seconds(1, unref_web, NULL);
+
+ return FALSE;
+}
+
+static void web_debug(const char *str, void *data)
+{
+ connman_info("%s: %s\n", (const char *) data, str);
+}
+
+static gboolean newlink_timeout(gpointer user_data)
+{
+ /*
+ * Stop if the timeout has been cancelled already by tun_newlink()
+ */
+ if (newlink_timeout_id == 0)
+ return FALSE;
+
+ DBG("");
+
+ if (newlink_watch != 0) {
+ connman_rtnl_remove_watch(newlink_watch);
+ newlink_watch = 0;
+ }
+
+ newlink_flags = 0;
+
+ if (web_request_id == 0)
+ tunnel_destroy();
+
+ newlink_timeout_id = 0;
+
+ return FALSE;
+}
+
+static void tun_newlink(unsigned flags, unsigned change, void *user_data)
+{
+ int index = GPOINTER_TO_INT(user_data);
+
+ if ((newlink_flags & IFF_UP) == (flags & IFF_UP)) {
+ newlink_flags = flags;
+ return;
+ }
+
+ if (flags & IFF_UP) {
+ /*
+ * We try to verify that connectivity through tunnel works ok.
+ */
+ if (newlink_timeout_id > 0) {
+ g_source_remove(newlink_timeout_id);
+ newlink_timeout_id = 0;
+ }
+
+ web = g_web_new(index);
+ if (web == NULL) {
+ tunnel_destroy();
+ return;
+ }
+
+ g_web_set_accept(web, NULL);
+ g_web_set_user_agent(web, "ConnMan/%s", VERSION);
+ g_web_set_close_connection(web, TRUE);
+
+ if (getenv("CONNMAN_WEB_DEBUG"))
+ g_web_set_debug(web, web_debug, "6to4");
+
+ web_request_id = g_web_request_get(web, STATUS_URL,
+ web_result, NULL, NULL);
+
+ newlink_timeout(NULL);
+ }
+
+ newlink_flags = flags;
+}
+
static int init_6to4(struct in_addr *ip4addr)
{
unsigned int a, b, c, d;
+ int ret, if_index;
in_addr_t addr;
- int ret;
DBG("");
if (ret)
goto error;
- tunnel_pending = 0;
+ if_index = connman_inet_ifindex("tun6to4");
+ if (if_index < 0)
+ goto error;
+
+ newlink_watch = connman_rtnl_add_newlink_watch(if_index,
+ tun_newlink, GINT_TO_POINTER(if_index));
+
+ newlink_timeout_id = g_timeout_add_seconds(1, newlink_timeout, NULL);
+
return 0;
error:
return -1;
}
-static void receive_rs_reply(struct nd_router_advert *reply, void *user_data)
+static void receive_rs_reply(struct nd_router_advert *reply,
+ unsigned int length, void *user_data)
{
char *address = user_data;
struct in_addr ip4addr;
- DBG("reply %p address %s", reply, address);
+ DBG("reply %p len %d address %s", reply, length, address);
/* We try to create tunnel if autoconfiguration did not work i.e.,
* we did not receive any reply to router solicitation message.
{
struct connman_ipconfig *ip4config, *ip6config;
enum connman_ipconfig_method method;
- unsigned int a, b, c, d;
+ unsigned int a, b;
struct in_addr ip4addr;
in_addr_t addr;
const char *address;
a = (addr & 0xff000000) >> 24;
b = (addr & 0x00ff0000) >> 16;
- c = (addr & 0x0000ff00) >> 8;
- d = addr & 0x000000ff;
/* 6to4 tunnel is only usable if we have a public IPv4 address */
if (a == 10 || (a == 192 && b == 168) ||
(a == 172 && (b >= 16 && b <= 31)))
return -1;
- index = connman_ipconfig_get_index(ip4config);
+ index = __connman_ipconfig_get_index(ip4config);
ip_address = g_strdup(address);
tunnel_pending = 1;
if (tunnel_created)
tunnel_destroy();
}
+
+int __connman_6to4_check(struct connman_ipconfig *ip4config)
+{
+ const char *address;
+
+ if (ip4config == NULL || tunnel_created == 0 ||
+ tunnel_pending == 1)
+ return -1;
+
+ DBG("tunnel ip address %s", tunnel_ip_address);
+
+ address = __connman_ipconfig_get_local(ip4config);
+ if (address == NULL)
+ return -1;
+
+ if (g_strcmp0(address, tunnel_ip_address) == 0)
+ return 1;
+
+ return 0;
+}
projects / framework / connectivity / connman.git / blobdiff