diff options
Diffstat (limited to 'src/ip6-manager')
| -rw-r--r-- | src/ip6-manager/Makefile.am | 27 | ||||
| -rw-r--r-- | src/ip6-manager/Makefile.in | 740 | ||||
| -rw-r--r-- | src/ip6-manager/nm-ip6-manager.c | 1747 | ||||
| -rw-r--r-- | src/ip6-manager/nm-ip6-manager.h | 88 |
4 files changed, 0 insertions, 2602 deletions
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version. - * - * 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 Street, Fifth Floor, Boston, MA 02110-1301 USA. - * - * Copyright (C) 2009 - 2010 Red Hat, Inc. - */ - -#define _GNU_SOURCE /* for struct in6_pktinfo */ - -#include <errno.h> -#include <unistd.h> -#include <netinet/icmp6.h> -#include <netinet/in.h> - -#include <netlink/route/addr.h> -#include <netlink/route/rtnl.h> -#include <netlink/route/route.h> - -#include "nm-ip6-manager.h" -#include "nm-netlink-monitor.h" -#include "nm-netlink-utils.h" -#include "nm-netlink-compat.h" -#include "NetworkManagerUtils.h" -#include "nm-marshal.h" -#include "nm-logging.h" -#include "nm-utils.h" - -/* Pre-DHCP addrconf timeout, in seconds */ -#define NM_IP6_TIMEOUT 20 - -/* FIXME? Stolen from the kernel sources */ -#define IF_RA_OTHERCONF 0x80 -#define IF_RA_MANAGED 0x40 -#define IF_RA_RCVD 0x20 -#define IF_RS_SENT 0x10 - -typedef struct { - NMNetlinkMonitor *monitor; - GHashTable *devices; - - struct nl_sock *nlh; - struct nl_cache *addr_cache, *route_cache; - - guint netlink_id; -} NMIP6ManagerPrivate; - -#define NM_IP6_MANAGER_GET_PRIVATE(o) (G_TYPE_INSTANCE_GET_PRIVATE ((o), NM_TYPE_IP6_MANAGER, NMIP6ManagerPrivate)) - -G_DEFINE_TYPE (NMIP6Manager, nm_ip6_manager, G_TYPE_OBJECT) - -enum { - ADDRCONF_COMPLETE, - CONFIG_CHANGED, - LAST_SIGNAL -}; - -static guint signals[LAST_SIGNAL] = { 0 }; - -typedef enum { - NM_IP6_DEVICE_UNCONFIGURED, - NM_IP6_DEVICE_GOT_LINK_LOCAL, - NM_IP6_DEVICE_GOT_ROUTER_ADVERTISEMENT, - NM_IP6_DEVICE_GOT_ADDRESS, - NM_IP6_DEVICE_TIMED_OUT -} NMIP6DeviceState; - -typedef struct { - struct in6_addr addr; - time_t expires; -} NMIP6RDNSS; - -typedef struct { - char domain[256]; - time_t expires; -} NMIP6DNSSL; - -/******************************************************************/ - -typedef struct { - NMIP6Manager *manager; - char *iface; - int ifindex; - /* +7 since this field is used directly by stuff that expects - * padding to multiples of 8 bytes. - */ - guint8 hwaddr[NM_UTILS_HWADDR_LEN_MAX + 7]; - guint hwaddr_len; - - gboolean has_linklocal; - gboolean has_nonlinklocal; - guint dhcp_opts; - - char *disable_ip6_path; - gboolean disable_ip6_save_valid; - gint32 disable_ip6_save; - - guint finish_addrconf_id; - guint config_changed_id; - - NMIP6DeviceState state; - NMIP6DeviceState target_state; - gboolean addrconf_complete; - - GArray *rdnss_servers; - guint rdnss_timeout_id; - guint32 rdnss_timeout; - - GArray *dnssl_domains; - guint dnssl_timeout_id; - guint32 dnssl_timeout; - - time_t last_solicitation; - - guint ip6flags_poll_id; - - guint32 ra_flags; -} NMIP6Device; - -static void -clear_config_changed (NMIP6Device *device) -{ - if (device->config_changed_id) - g_source_remove (device->config_changed_id); - device->config_changed_id = 0; -} - -static void -nm_ip6_device_destroy (NMIP6Device *device) -{ - g_return_if_fail (device != NULL); - - /* reset the saved IPv6 value */ - if (device->disable_ip6_save_valid) { - nm_utils_do_sysctl (device->disable_ip6_path, - device->disable_ip6_save ? "1" : "0"); - } - - if (device->finish_addrconf_id) - g_source_remove (device->finish_addrconf_id); - - clear_config_changed (device); - - g_free (device->iface); - if (device->rdnss_servers) - g_array_free (device->rdnss_servers, TRUE); - if (device->rdnss_timeout_id) - g_source_remove (device->rdnss_timeout_id); - if (device->dnssl_domains) - g_array_free (device->dnssl_domains, TRUE); - if (device->dnssl_timeout_id) - g_source_remove (device->dnssl_timeout_id); - if (device->ip6flags_poll_id) - g_source_remove (device->ip6flags_poll_id); - - g_slice_free (NMIP6Device, device); -} - -static NMIP6Device * -nm_ip6_device_new (NMIP6Manager *manager, - int ifindex, - const guint8 *hwaddr, - guint hwaddr_len) -{ - NMIP6ManagerPrivate *priv = NM_IP6_MANAGER_GET_PRIVATE (manager); - NMIP6Device *device; - - g_return_val_if_fail (ifindex > 0, NULL); - g_return_val_if_fail (hwaddr != NULL, NULL); - g_return_val_if_fail (hwaddr_len > 0, NULL); - g_return_val_if_fail (hwaddr_len <= NM_UTILS_HWADDR_LEN_MAX, NULL); - - device = g_slice_new0 (NMIP6Device); - if (!device) { - nm_log_err (LOGD_IP6, "(%d): out of memory creating IP6 addrconf object.", - ifindex); - return NULL; - } - - device->ifindex = ifindex; - device->iface = nm_netlink_index_to_iface (ifindex); - if (!device->iface) { - nm_log_err (LOGD_IP6, "(%d): could not find interface name from index.", - ifindex); - goto error; - } - - memcpy (device->hwaddr, hwaddr, hwaddr_len); - device->hwaddr_len = hwaddr_len; - - device->manager = manager; - - device->rdnss_servers = g_array_new (FALSE, FALSE, sizeof (NMIP6RDNSS)); - - device->dnssl_domains = g_array_new (FALSE, FALSE, sizeof (NMIP6DNSSL)); - - g_hash_table_replace (priv->devices, GINT_TO_POINTER (device->ifindex), device); - - /* and the original value of IPv6 enable/disable */ - device->disable_ip6_path = g_strdup_printf ("/proc/sys/net/ipv6/conf/%s/disable_ipv6", - device->iface); - g_assert (device->disable_ip6_path); - device->disable_ip6_save_valid = nm_utils_get_proc_sys_net_value_with_bounds (device->disable_ip6_path, - device->iface, - &device->disable_ip6_save, - 0, 1); - - return device; - -error: - nm_ip6_device_destroy (device); - return NULL; -} - -static NMIP6Device * -nm_ip6_manager_get_device (NMIP6Manager *manager, int ifindex) -{ - NMIP6ManagerPrivate *priv; - - g_return_val_if_fail (manager != NULL, NULL); - g_return_val_if_fail (NM_IS_IP6_MANAGER (manager), NULL); - - priv = NM_IP6_MANAGER_GET_PRIVATE (manager); - return g_hash_table_lookup (priv->devices, GINT_TO_POINTER (ifindex)); -} - -static void -device_send_router_solicitation (NMIP6Device *device, const char *why) -{ - int sock, hops; - struct sockaddr_in6 sin6; - struct nd_router_solicit rs; - struct nd_opt_hdr lladdr_hdr; - static const guint8 local_routers_addr[] = - { 0xFF, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02 }; - struct msghdr mhdr; - struct iovec iov[3]; - struct cmsghdr *cmsg; - struct in6_pktinfo *ipi; - guint8 cmsgbuf[128]; - int cmsglen = 0; - time_t now; - - now = time (NULL); - if (device->last_solicitation > now - 5) - return; - device->last_solicitation = now; - - nm_log_dbg (LOGD_IP6, "(%s): %s: sending router solicitation", - device->iface, why); - - sock = socket (AF_INET6, SOCK_RAW, IPPROTO_ICMPV6); - if (sock < 0) { - nm_log_dbg (LOGD_IP6, "(%s): could not create ICMPv6 socket: %s", - device->iface, g_strerror (errno)); - return; - } - - hops = 255; - if ( setsockopt (sock, IPPROTO_IPV6, IPV6_MULTICAST_HOPS, &hops, sizeof (hops)) == -1 - || setsockopt (sock, IPPROTO_IPV6, IPV6_UNICAST_HOPS, &hops, sizeof (hops)) == -1) { - nm_log_dbg (LOGD_IP6, "(%s): could not set hop limit on ICMPv6 socket: %s", - device->iface, g_strerror (errno)); - close (sock); - return; - } - - /* Use the "all link-local routers" multicast address */ - memset (&sin6, 0, sizeof (sin6)); - memcpy (&sin6.sin6_addr, local_routers_addr, sizeof (sin6.sin6_addr)); - mhdr.msg_name = &sin6; - mhdr.msg_namelen = sizeof (sin6); - - /* Build the router solicitation */ - mhdr.msg_iov = iov; - memset (&rs, 0, sizeof (rs)); - rs.nd_rs_type = ND_ROUTER_SOLICIT; - iov[0].iov_len = sizeof (rs); - iov[0].iov_base = &rs; - - if (device->hwaddr_len > 0) { - memset (&lladdr_hdr, 0, sizeof (lladdr_hdr)); - lladdr_hdr.nd_opt_type = ND_OPT_SOURCE_LINKADDR; - lladdr_hdr.nd_opt_len = (sizeof (lladdr_hdr) + device->hwaddr_len + 7) % 8; - iov[1].iov_len = sizeof (lladdr_hdr); - iov[1].iov_base = &lladdr_hdr; - - iov[2].iov_len = (lladdr_hdr.nd_opt_len * 8) - 2; - iov[2].iov_base = device->hwaddr; - - mhdr.msg_iovlen = 3; - } else - mhdr.msg_iovlen = 1; - - /* Force this to go on the right device */ - memset (cmsgbuf, 0, sizeof (cmsgbuf)); - cmsg = (struct cmsghdr *) cmsgbuf; - cmsglen = CMSG_SPACE (sizeof (*ipi)); - cmsg->cmsg_len = CMSG_LEN (sizeof (*ipi)); - cmsg->cmsg_level = SOL_IPV6; - cmsg->cmsg_type = IPV6_PKTINFO; - ipi = (struct in6_pktinfo *) CMSG_DATA (cmsg); - ipi->ipi6_ifindex = device->ifindex; - - mhdr.msg_control = cmsg; - mhdr.msg_controllen = cmsglen; - - if (sendmsg (sock, &mhdr, 0) == -1) { - nm_log_dbg (LOGD_IP6, "(%s): could not send router solicitation: %s", - device->iface, g_strerror (errno)); - } - - close (sock); -} - -static char * -device_get_iface (NMIP6Device *device) -{ - return device ? device->iface : "unknown"; -} - -static const char * -state_to_string (NMIP6DeviceState state) -{ - switch (state) { - case NM_IP6_DEVICE_UNCONFIGURED: - return "unconfigured"; - case NM_IP6_DEVICE_GOT_LINK_LOCAL: - return "got-link-local"; - case NM_IP6_DEVICE_GOT_ROUTER_ADVERTISEMENT: - return "got-ra"; - case NM_IP6_DEVICE_GOT_ADDRESS: - return "got-address"; - case NM_IP6_DEVICE_TIMED_OUT: - return "timed-out"; - default: - return "unknown"; - } -} - -static gboolean -device_set_state (NMIP6Device *device, NMIP6DeviceState state) -{ - NMIP6DeviceState old_state; - - g_return_val_if_fail (device != NULL, FALSE); - - if (state == device->state) - return FALSE; - - old_state = device->state; - device->state = state; - nm_log_dbg (LOGD_IP6, "(%s) IP6 device state: %s -> %s", - device_get_iface (device), - state_to_string (old_state), - state_to_string (state)); - return TRUE; -} - -static char * -ra_flags_to_string (guint32 ra_flags) -{ - GString *s = g_string_sized_new (20); - - g_string_append (s, " ("); - if (ra_flags & IF_RS_SENT) - g_string_append_c (s, 'S'); - - if (ra_flags & IF_RA_RCVD) - g_string_append_c (s, 'R'); - - if (ra_flags & IF_RA_MANAGED) - g_string_append_c (s, 'M'); - - if (ra_flags & IF_RA_OTHERCONF) - g_string_append_c (s, 'O'); - - g_string_append_c (s, ')'); - return g_string_free (s, FALSE); -} - -static gboolean -device_set_ra_flags (NMIP6Device *device, guint ra_flags) -{ - guint old_ra_flags; - gchar *ra_flags_str, *old_ra_flags_str; - - g_return_val_if_fail (device != NULL, FALSE); - - if (ra_flags == device->ra_flags) - return FALSE; - - old_ra_flags = device->ra_flags; - device->ra_flags = ra_flags; - - if (nm_logging_level_enabled (LOGL_DEBUG)) { - ra_flags_str = ra_flags_to_string (ra_flags); - old_ra_flags_str = ra_flags_to_string (old_ra_flags); - nm_log_dbg (LOGD_IP6, "(%s) IP6 device ra_flags: 0x%08x %s -> 0x%08x %s", - device_get_iface (device), - old_ra_flags, old_ra_flags_str, - ra_flags, ra_flags_str); - g_free (ra_flags_str); - g_free (old_ra_flags_str); - } - - return TRUE; -} - -/******************************************************************/ - -typedef struct { - NMIP6Device *device; - gboolean success; -} CallbackInfo; - -static gboolean -finish_addrconf (gpointer user_data) -{ - CallbackInfo *info = user_data; - NMIP6Device *device = info->device; - NMIP6Manager *manager = device->manager; - int ifindex; - - device->finish_addrconf_id = 0; - device->addrconf_complete = TRUE; - ifindex = device->ifindex; - - /* We're done, stop polling IPv6 flags */ - if (device->ip6flags_poll_id) { - g_source_remove (device->ip6flags_poll_id); - device->ip6flags_poll_id = 0; - } - - /* And tell listeners that addrconf is complete */ - if (info->success) { - g_signal_emit (manager, signals[ADDRCONF_COMPLETE], 0, - ifindex, device->dhcp_opts, TRUE); - } else { - nm_log_info (LOGD_IP6, "(%s): IP6 addrconf timed out or failed.", - device->iface); - - nm_ip6_manager_cancel_addrconf (manager, ifindex); - g_signal_emit (manager, signals[ADDRCONF_COMPLETE], 0, - ifindex, IP6_DHCP_OPT_NONE, FALSE); - } - - return FALSE; -} - -static gboolean -emit_config_changed (gpointer user_data) -{ - CallbackInfo *info = user_data; - NMIP6Device *device = info->device; - NMIP6Manager *manager = device->manager; - - device->config_changed_id = 0; - g_signal_emit (manager, signals[CONFIG_CHANGED], 0, - device->ifindex, - device->dhcp_opts, - info->success); - return FALSE; -} - -static void set_rdnss_timeout (NMIP6Device *device); - -static gboolean -rdnss_expired (gpointer user_data) -{ - NMIP6Device *device = user_data; - CallbackInfo info = { device, FALSE }; - - nm_log_dbg (LOGD_IP6, "(%s): IPv6 RDNSS information expired", device->iface); - - set_rdnss_timeout (device); - clear_config_changed (device); - emit_config_changed (&info); - return FALSE; -} - -static gboolean -rdnss_needs_refresh (gpointer user_data) -{ - NMIP6Device *device = user_data; - gchar *msg; - - msg = g_strdup_printf ("IPv6 RDNSS due to expire in %d seconds", - device->rdnss_timeout); - device_send_router_solicitation (device, msg); - g_free (msg); - - set_rdnss_timeout (device); - - return FALSE; -} - -static void -set_rdnss_timeout (NMIP6Device *device) -{ - time_t expires = 0, now = time (NULL); - NMIP6RDNSS *rdnss; - int i; - - if (device->rdnss_timeout_id) { - g_source_remove (device->rdnss_timeout_id); - device->rdnss_timeout_id = 0; - } - - /* Find the soonest expiration time. */ - for (i = 0; i < device->rdnss_servers->len; i++) { - rdnss = &g_array_index (device->rdnss_servers, NMIP6RDNSS, i); - if (rdnss->expires == 0) - continue; - - /* If the entry has already expired, remove it; the "+ 1" is - * because g_timeout_add_seconds() might fudge the timing a - * bit. - */ - if (rdnss->expires <= now + 1) { - char buf[INET6_ADDRSTRLEN + 1]; - - if (inet_ntop (AF_INET6, &(rdnss->addr), buf, sizeof (buf)) > 0) { - nm_log_dbg (LOGD_IP6, "(%s): removing expired RA-provided nameserver %s", - device->iface, buf); - } - g_array_remove_index (device->rdnss_servers, i--); - continue; - } - - if (!expires || rdnss->expires < expires) - expires = rdnss->expires; - } - - if (expires) { - gchar *msg; - - device->rdnss_timeout = MIN (expires - now, G_MAXUINT32 - 1); - - if (device->rdnss_timeout <= 5) { - msg = g_strdup_printf ("IPv6 RDNSS about to expire in %d seconds", - device->rdnss_timeout); - device_send_router_solicitation (device, msg); - g_free (msg); - device->rdnss_timeout_id = g_timeout_add_seconds (device->rdnss_timeout, - rdnss_expired, - device); - } else { - device->rdnss_timeout_id = g_timeout_add_seconds (device->rdnss_timeout / 2, - rdnss_needs_refresh, - device); - } - } -} - -static void set_dnssl_timeout (NMIP6Device *device); - -static gboolean -dnssl_expired (gpointer user_data) -{ - NMIP6Device *device = user_data; - CallbackInfo info = { device, FALSE }; - - nm_log_dbg (LOGD_IP6, "(%s): IPv6 DNSSL information expired", device->iface); - - set_dnssl_timeout (device); - clear_config_changed (device); - emit_config_changed (&info); - return FALSE; -} - -static gboolean -dnssl_needs_refresh (gpointer user_data) -{ - NMIP6Device *device = user_data; - gchar *msg; - - msg = g_strdup_printf ("IPv6 DNSSL due to expire in %d seconds", - device->dnssl_timeout); - device_send_router_solicitation (device, msg); - g_free (msg); - - set_dnssl_timeout (device); - - return FALSE; -} - -static void -set_dnssl_timeout (NMIP6Device *device) -{ - time_t expires = 0, now = time (NULL); - NMIP6DNSSL *dnssl; - int i; - - if (device->dnssl_timeout_id) { - g_source_remove (device->dnssl_timeout_id); - device->dnssl_timeout_id = 0; - } - - /* Find the soonest expiration time. */ - for (i = 0; i < device->dnssl_domains->len; i++) { - dnssl = &g_array_index (device->dnssl_domains, NMIP6DNSSL, i); - if (dnssl->expires == 0) - continue; - - /* If the entry has already expired, remove it; the "+ 1" is - * because g_timeout_add_seconds() might fudge the timing a - * bit. - */ - if (dnssl->expires <= now + 1) { - nm_log_dbg (LOGD_IP6, "(%s): removing expired RA-provided domain %s", - device->iface, dnssl->domain); - g_array_remove_index (device->dnssl_domains, i--); - continue; - } - - if (!expires || dnssl->expires < expires) - expires = dnssl->expires; - } - - if (expires) { - gchar *msg; - - device->dnssl_timeout = MIN (expires - now, G_MAXUINT32 - 1); - - if (device->dnssl_timeout <= 5) { - msg = g_strdup_printf ("IPv6 DNSSL about to expire in %d seconds", - device->dnssl_timeout); - device_send_router_solicitation (device, msg); - g_free (msg); - device->dnssl_timeout_id = g_timeout_add_seconds (device->dnssl_timeout, - dnssl_expired, - device); - } else { - device->dnssl_timeout_id = g_timeout_add_seconds (device->dnssl_timeout / 2, - dnssl_needs_refresh, - device); - } - } -} - -static CallbackInfo * -callback_info_new (NMIP6Device *device, gboolean success) -{ - CallbackInfo *info; - - info = g_malloc0 (sizeof (CallbackInfo)); - info->device = device; - info->success = success; - return info; -} - -static void -check_addresses (NMIP6Device *device) -{ - NMIP6Manager *manager = device->manager; - NMIP6ManagerPrivate *priv = NM_IP6_MANAGER_GET_PRIVATE (manager); - struct rtnl_addr *rtnladdr; - struct nl_addr *nladdr; - struct in6_addr *addr; - - /* Reset address information */ - device->has_linklocal = FALSE; - device->has_nonlinklocal = FALSE; - - /* Look for any IPv6 addresses the kernel may have set for the device */ - for (rtnladdr = (struct rtnl_addr *) nl_cache_get_first (priv->addr_cache); - rtnladdr; - rtnladdr = (struct rtnl_addr *) nl_cache_get_next ((struct nl_object *) rtnladdr)) { - char buf[INET6_ADDRSTRLEN]; - - if (rtnl_addr_get_ifindex (rtnladdr) != device->ifindex) - continue; - - nladdr = rtnl_addr_get_local (rtnladdr); - if (!nladdr || nl_addr_get_family (nladdr) != AF_INET6) - continue; - - addr = nl_addr_get_binary_addr (nladdr); - - if (inet_ntop (AF_INET6, addr, buf, INET6_ADDRSTRLEN) > 0) { - nm_log_dbg (LOGD_IP6, "(%s): netlink address: %s/%d", - device->iface, buf, - rtnl_addr_get_prefixlen (rtnladdr)); - } - - if (IN6_IS_ADDR_LINKLOCAL (addr)) { - if (device->state == NM_IP6_DEVICE_UNCONFIGURED) - device_set_state (device, NM_IP6_DEVICE_GOT_LINK_LOCAL); - device->has_linklocal = TRUE; - } else { - if (device->state == NM_IP6_DEVICE_GOT_ROUTER_ADVERTISEMENT) - device_set_state (device, NM_IP6_DEVICE_GOT_ADDRESS); - device->has_nonlinklocal = TRUE; - } - } - - /* There might be a LL address hanging around on the interface from - * before in the initial run, but if it goes away later, make sure we - * regress from GOT_LINK_LOCAL back to UNCONFIGURED. - */ - if ((device->state == NM_IP6_DEVICE_GOT_LINK_LOCAL) && !device->has_linklocal) - device_set_state (device, NM_IP6_DEVICE_UNCONFIGURED); - - nm_log_dbg (LOGD_IP6, "(%s): addresses checked (state %s)", - device->iface, state_to_string (device->state)); -} - -static void -check_ra_flags (NMIP6Device *device) -{ - device->dhcp_opts = IP6_DHCP_OPT_NONE; - - /* We only care about router advertisements if we want a real IPv6 address */ - if ( (device->target_state == NM_IP6_DEVICE_GOT_ADDRESS) - && (device->ra_flags & IF_RA_RCVD)) { - - if (device->state < NM_IP6_DEVICE_GOT_ROUTER_ADVERTISEMENT) - device_set_state (device, NM_IP6_DEVICE_GOT_ROUTER_ADVERTISEMENT); - - if (device->ra_flags & IF_RA_MANAGED) { - device->dhcp_opts = IP6_DHCP_OPT_MANAGED; - nm_log_dbg (LOGD_IP6, "router advertisement deferred to DHCPv6"); - } else if (device->ra_flags & IF_RA_OTHERCONF) { - device->dhcp_opts = IP6_DHCP_OPT_OTHERCONF; - nm_log_dbg (LOGD_IP6, "router advertisement requests parallel DHCPv6"); - } - } - nm_log_dbg (LOGD_IP6, "(%s): router advertisement checked (state %s)", - device->iface, state_to_string (device->state)); -} - -static void -check_addrconf_complete (NMIP6Device *device) -{ - CallbackInfo *info; - - if (!device->addrconf_complete) { - /* Managed mode (ie DHCP only) short-circuits automatic addrconf, so - * we don't bother waiting for the device's target state to be reached - * when the RA requests managed mode. - */ - if ( (device->state >= device->target_state) - || (device->dhcp_opts == IP6_DHCP_OPT_MANAGED)) { - /* device->finish_addrconf_id may currently be a timeout - * rather than an idle, so we remove the existing source. - */ - if (device->finish_addrconf_id) - g_source_remove (device->finish_addrconf_id); - - nm_log_dbg (LOGD_IP6, "(%s): reached target state or Managed-mode requested (state '%s') (dhcp opts 0x%X)", - device->iface, state_to_string (device->state), - device->dhcp_opts); - - info = callback_info_new (device, TRUE); - device->finish_addrconf_id = g_idle_add_full (G_PRIORITY_DEFAULT_IDLE, - finish_addrconf, - info, - (GDestroyNotify) g_free); - } - } else { - if (!device->config_changed_id) { - gboolean success = TRUE; - - /* If for some reason an RA-provided address disappeared, we need - * to make sure we fail the connection as it's no longer valid. - */ - if ( (device->state == NM_IP6_DEVICE_GOT_ADDRESS) - && (device->target_state == NM_IP6_DEVICE_GOT_ADDRESS) - && !device->has_nonlinklocal) { - nm_log_dbg (LOGD_IP6, "(%s): RA-provided address no longer found", - device->iface); - success = FALSE; - } - - info = callback_info_new (device, success); - device->config_changed_id = g_idle_add_full (G_PRIORITY_DEFAULT_IDLE, - emit_config_changed, - info, - (GDestroyNotify) g_free); - } - } - - nm_log_dbg (LOGD_IP6, "(%s): dhcp_opts checked (state %s)", - device->iface, state_to_string (device->state)); -} - -static void -nm_ip6_device_sync_from_netlink (NMIP6Device *device) -{ - nm_log_dbg (LOGD_IP6, "(%s): syncing with netlink (ra_flags 0x%X) (state/target '%s'/'%s')", - device->iface, device->ra_flags, - state_to_string (device->state), - state_to_string (device->target_state)); - - check_ra_flags (device); - check_addresses (device); - check_addrconf_complete (device); -} - -static void -ref_object (struct nl_object *obj, void *data) -{ - struct nl_object **out = data; - - nl_object_get (obj); - *out = obj; -} - -static void -dump_address_change (NMIP6Device *device, struct nlmsghdr *hdr, struct rtnl_addr *rtnladdr) -{ - char *event; - struct nl_addr *addr; - char addr_str[40] = "none"; - - event = hdr->nlmsg_type == RTM_NEWADDR ? "new" : "lost"; - addr = rtnl_addr_get_local (rtnladdr); - if (addr) - nl_addr2str (addr, addr_str, 40); - - nm_log_dbg (LOGD_IP6, "(%s) %s address: %s", device_get_iface (device), event, addr_str); -} - -static void -dump_route_change (NMIP6Device *device, struct nlmsghdr *hdr, struct rtnl_route *rtnlroute) -{ - char *event; - struct nl_addr *dst; - char dst_str[40] = "none"; - struct nl_addr *gateway; - char gateway_str[40] = "none"; - - event = hdr->nlmsg_type == RTM_NEWROUTE ? "new" : "lost"; - dst = rtnl_route_get_dst (rtnlroute); - gateway = rtnl_route_get_gateway (rtnlroute); - if (dst) - nl_addr2str (dst, dst_str, 40); - if (gateway) - nl_addr2str (gateway, gateway_str, 40); - - nm_log_dbg (LOGD_IP6, "(%s) %s route: %s via %s",device_get_iface (device), event, dst_str, gateway_str); -} - -static NMIP6Device * -process_address_change (NMIP6Manager *manager, struct nl_msg *msg) -{ - NMIP6ManagerPrivate *priv = NM_IP6_MANAGER_GET_PRIVATE (manager); - NMIP6Device *device; - struct nlmsghdr *hdr; - struct rtnl_addr *rtnladdr; - int old_size; - - hdr = nlmsg_hdr (msg); - rtnladdr = NULL; - nl_msg_parse (msg, ref_object, &rtnladdr); - if (!rtnladdr) { - nm_log_dbg (LOGD_IP6, "error processing netlink new/del address message"); - return NULL; - } - - device = nm_ip6_manager_get_device (manager, rtnl_addr_get_ifindex (rtnladdr)); - - old_size = nl_cache_nitems (priv->addr_cache); - nl_cache_include (priv->addr_cache, (struct nl_object *)rtnladdr, NULL, NULL); - - /* The kernel will re-notify us of automatically-added addresses - * every time it gets another router advertisement. We only want - * to notify higher levels if we actually changed something. - */ - nm_log_dbg (LOGD_IP6, "(%s): address cache size: %d -> %d:", - device_get_iface (device), old_size, nl_cache_nitems (priv->addr_cache)); - dump_address_change (device, hdr, rtnladdr); - rtnl_addr_put (rtnladdr); - if (nl_cache_nitems (priv->addr_cache) == old_size) - return NULL; - - return device; -} - -static NMIP6Device * -process_route_change (NMIP6Manager *manager, struct nl_msg *msg) -{ - NMIP6ManagerPrivate *priv = NM_IP6_MANAGER_GET_PRIVATE (manager); - NMIP6Device *device; - struct nlmsghdr *hdr; - struct rtnl_route *rtnlroute; - int old_size; - - hdr = nlmsg_hdr (msg); - rtnlroute = NULL; - nl_msg_parse (msg, ref_object, &rtnlroute); - if (!rtnlroute) { - nm_log_dbg (LOGD_IP6, "error processing netlink new/del route message"); - return NULL; - } - - /* Cached/cloned routes are created by the kernel for specific operations - * and aren't part of the interface's permanent routing configuration. - */ - if (rtnl_route_get_flags (rtnlroute) & RTM_F_CLONED) { - rtnl_route_put (rtnlroute); - return NULL; - } - - device = nm_ip6_manager_get_device (manager, rtnl_route_get_oif (rtnlroute)); - - old_size = nl_cache_nitems (priv->route_cache); - nl_cache_include (priv->route_cache, (struct nl_object *)rtnlroute, NULL, NULL); - - /* As above in process_address_change */ - nm_log_dbg (LOGD_IP6, "(%s): route cache size: %d -> %d:", - device_get_iface (device), old_size, nl_cache_nitems (priv->route_cache)); - dump_route_change (device, hdr, rtnlroute); - rtnl_route_put (rtnlroute); - if (nl_cache_nitems (priv->route_cache) == old_size) - return NULL; - - return device; -} - -/* RDNSS parsing code based on rdnssd, Copyright 2007 Pierre Ynard, - * Rémi Denis-Courmont. GPLv2/3 - */ - -#define ND_OPT_RDNSS 25 -#define ND_OPT_DNSSL 31 - -struct nd_opt_rdnss { - uint8_t nd_opt_rdnss_type; - uint8_t nd_opt_rdnss_len; - uint16_t nd_opt_rdnss_reserved1; - uint32_t nd_opt_rdnss_lifetime; - /* followed by one or more IPv6 addresses */ -} __attribute__ ((packed)); - -struct nd_opt_dnssl { - uint8_t nd_opt_dnssl_type; - uint8_t nd_opt_dnssl_len; - uint16_t nd_opt_dnssl_reserved1; - uint32_t nd_opt_dnssl_lifetime; - /* followed by one or more suffixes */ -} __attribute__ ((packed)); - -static gboolean -process_nduseropt_rdnss (NMIP6Device *device, struct nd_opt_hdr *opt) -{ - size_t opt_len; - struct nd_opt_rdnss *rdnss_opt; - time_t now = time (NULL); - struct in6_addr *addr; - GArray *new_servers; - NMIP6RDNSS server, *cur_server; - gboolean changed = FALSE; - guint i; - - opt_len = opt->nd_opt_len; - - if (opt_len < 3 || (opt_len & 1) == 0) - return FALSE; - - rdnss_opt = (struct nd_opt_rdnss *) opt; - - new_servers = g_array_new (FALSE, FALSE, sizeof (NMIP6RDNSS)); - - /* Pad the DNS server expiry somewhat to give a bit of slack in cases - * where one RA gets lost or something (which can happen on unreliable - * links like WiFi where certain types of frames are not retransmitted). - * Note that 0 has special meaning and is therefore not adjusted. - */ - server.expires = ntohl (rdnss_opt->nd_opt_rdnss_lifetime); - if (server.expires > 0) - if (server.expires < 7200) - server.expires = 7200; - server.expires += now; - - for (addr = (struct in6_addr *) (rdnss_opt + 1); opt_len >= 2; addr++, opt_len -= 2) { - char buf[INET6_ADDRSTRLEN + 1]; - - if (!inet_ntop (AF_INET6, addr, buf, sizeof (buf))) { - nm_log_warn (LOGD_IP6, "(%s): received invalid RA-provided nameserver", device->iface); - continue; - } - - /* Update the cached timeout if we already saw this server */ - for (i = 0; i < device->rdnss_servers->len; i++) { - cur_server = &(g_array_index (device->rdnss_servers, NMIP6RDNSS, i)); - - if (!IN6_ARE_ADDR_EQUAL (addr, &cur_server->addr)) - continue; - - cur_server->expires = server.expires; - - if (server.expires > 0) { - nm_log_dbg (LOGD_IP6, "(%s): refreshing RA-provided nameserver %s (expires in %ld seconds)", - device->iface, buf, - server.expires - now); - break; - } - - nm_log_dbg (LOGD_IP6, "(%s): removing RA-provided nameserver %s on router request", - device->iface, buf); - - g_array_remove_index (device->rdnss_servers, i); - changed = TRUE; - break; - } - - if (server.expires == 0) - continue; - if (i < device->rdnss_servers->len) - continue; - - nm_log_dbg (LOGD_IP6, "(%s): found RA-provided nameserver %s (expires in %ld seconds)", - device->iface, buf, server.expires - now); - - server.addr = *addr; - g_array_append_val (new_servers, server); - } - - /* New servers must be added in the order they are listed in the - * RA option and before any existing servers. - * - * Note: This is the place to remove servers if we want to cap the - * number of resolvers. The RFC states that the one to expire - * first of the existing servers should be removed. - */ - if (new_servers->len) { - g_array_prepend_vals (device->rdnss_servers, - new_servers->data, new_servers->len); - changed = TRUE; - } - - g_array_free (new_servers, TRUE); - - /* Timeouts may have changed even if IPs didn't */ - set_rdnss_timeout (device); - - return changed; -} - -static const char * -parse_dnssl_domain (const unsigned char *buffer, size_t maxlen) -{ - static char domain[256]; - size_t label_len; - - domain[0] = '\0'; - - while (maxlen > 0) { - label_len = *buffer; - buffer++; - maxlen--; - - if (label_len == 0) - return domain; - - if (label_len > maxlen) - return NULL; - if ((sizeof (domain) - strlen (domain)) < (label_len + 2)) - return NULL; - - if (domain[0] != '\0') - strcat (domain, "."); - strncat (domain, (const char *)buffer, label_len); - buffer += label_len; - maxlen -= label_len; - } - - return NULL; -} - -static gboolean -process_nduseropt_dnssl (NMIP6Device *device, struct nd_opt_hdr *opt) -{ - size_t opt_len; - struct nd_opt_dnssl *dnssl_opt; - unsigned char *opt_ptr; - time_t now = time (NULL); - GArray *new_domains; - NMIP6DNSSL domain, *cur_domain; - gboolean changed; - guint i; - - opt_len = opt->nd_opt_len; - - if (opt_len < 2) - return FALSE; - - dnssl_opt = (struct nd_opt_dnssl *) opt; - - opt_ptr = (unsigned char *)(dnssl_opt + 1); - opt_len = (opt_len - 1) * 8; /* prefer bytes for later handling */ - - new_domains = g_array_new (FALSE, FALSE, sizeof (NMIP6DNSSL)); - - changed = FALSE; - - /* Pad the DNS server expiry somewhat to give a bit of slack in cases - * where one RA gets lost or something (which can happen on unreliable - * links like wifi where certain types of frames are not retransmitted). - * Note that 0 has special meaning and is therefore not adjusted. - */ - domain.expires = ntohl (dnssl_opt->nd_opt_dnssl_lifetime); - if (domain.expires > 0) - if (domain.expires < 7200) - domain.expires = 7200; - domain.expires += now; - - while (opt_len) { - const char *domain_str; - - domain_str = parse_dnssl_domain (opt_ptr, opt_len); - if (domain_str == NULL) { - nm_log_dbg (LOGD_IP6, "(%s): invalid DNSSL option, parsing aborted", - device->iface); - break; - } - - /* The DNSSL encoding of domains happen to occupy the same size - * as the length of the resulting string, including terminating - * null. */ - opt_ptr += strlen (domain_str) + 1; - opt_len -= strlen (domain_str) + 1; - - /* Ignore empty domains. They're probably just padding... */ - if (domain_str[0] == '\0') - continue; - - /* Update cached domain information if we've seen this domain before */ - for (i = 0; i < device->dnssl_domains->len; i++) { - cur_domain = &(g_array_index (device->dnssl_domains, NMIP6DNSSL, i)); - - if (strcmp (domain_str, cur_domain->domain) != 0) - continue; - - cur_domain->expires = domain.expires; - - if (domain.expires > 0) { - nm_log_dbg (LOGD_IP6, "(%s): refreshing RA-provided domain %s (expires in %ld seconds)", - device->iface, domain_str, - domain.expires - now); - break; - } - - nm_log_dbg (LOGD_IP6, "(%s): removing RA-provided domain %s on router request", - device->iface, domain_str); - - g_array_remove_index (device->dnssl_domains, i); - changed = TRUE; - break; - } - - if (domain.expires == 0) - continue; - if (i < device->dnssl_domains->len) - continue; - - nm_log_dbg (LOGD_IP6, "(%s): found RA-provided domain %s (expires in %ld seconds)", - device->iface, domain_str, domain.expires - now); - - g_assert (strlen (domain_str) < sizeof (domain.domain)); - strcpy (domain.domain, domain_str); - g_array_append_val (new_domains, domain); - } - - /* New domains must be added in the order they are listed in the - * RA option and before any existing domains. - * - * Note: This is the place to remove domains if we want to cap the - * number of domains. The RFC states that the one to expire - * first of the existing domains should be removed. - */ - if (new_domains->len) { - g_array_prepend_vals (device->dnssl_domains, - new_domains->data, new_domains->len); - changed = TRUE; - } - - g_array_free (new_domains, TRUE); - - /* Timeouts may have changed even if domains didn't */ - set_dnssl_timeout (device); - - return changed; -} - -static NMIP6Device * -process_nduseropt (NMIP6Manager *manager, struct nl_msg *msg) -{ - NMIP6Device *device; - struct nduseroptmsg *ndmsg; - struct nd_opt_hdr *opt; - guint opts_len; - gboolean changed = FALSE; - - nm_log_dbg (LOGD_IP6, "processing netlink nduseropt message"); - - ndmsg = (struct nduseroptmsg *) NLMSG_DATA (nlmsg_hdr (msg)); - - if (!nlmsg_valid_hdr (nlmsg_hdr (msg), sizeof (*ndmsg)) || - nlmsg_datalen (nlmsg_hdr (msg)) < - (ndmsg->nduseropt_opts_len + sizeof (*ndmsg))) { - nm_log_dbg (LOGD_IP6, "ignoring invalid nduseropt message"); - return NULL; - } - - if (ndmsg->nduseropt_family != AF_INET6 || - ndmsg->nduseropt_icmp_type != ND_ROUTER_ADVERT || - ndmsg->nduseropt_icmp_code != 0) { - nm_log_dbg (LOGD_IP6, "ignoring non-Router Advertisement message"); - return NULL; - } - - device = nm_ip6_manager_get_device (manager, ndmsg->nduseropt_ifindex); - if (!device) { - nm_log_dbg (LOGD_IP6, "ignoring message for unknown device"); - return NULL; - } - - opt = (struct nd_opt_hdr *) (ndmsg + 1); - opts_len = ndmsg->nduseropt_opts_len; - - while (opts_len >= sizeof (struct nd_opt_hdr)) { - size_t nd_opt_len = opt->nd_opt_len; - - if (nd_opt_len == 0 || opts_len < (nd_opt_len << 3)) - break; - - switch (opt->nd_opt_type) { - case ND_OPT_RDNSS: - changed = process_nduseropt_rdnss (device, opt); - break; - case ND_OPT_DNSSL: - changed = process_nduseropt_dnssl (device, opt); - break; - } - - opts_len -= opt->nd_opt_len << 3; - opt = (struct nd_opt_hdr *) ((uint8_t *) opt + (opt->nd_opt_len << 3)); - } - - if (changed) - return device; - else - return NULL; -} - -static struct nla_policy link_policy[IFLA_MAX + 1] = { - [IFLA_PROTINFO] = { .type = NLA_NESTED }, -}; - -static struct nla_policy link_prot_policy[IFLA_INET6_MAX + 1] = { - [IFLA_INET6_FLAGS] = { .type = NLA_U32 }, -}; - -static NMIP6Device * -process_newlink (NMIP6Manager *manager, struct nl_msg *msg) -{ - struct nlmsghdr *hdr = nlmsg_hdr (msg); - struct ifinfomsg *ifi; - NMIP6Device *device; - struct nlattr *tb[IFLA_MAX + 1]; - struct nlattr *pi[IFLA_INET6_MAX + 1]; - int err; - - /* FIXME: we have to do this manually for now since libnl doesn't yet - * support the IFLA_PROTINFO attribute of NEWLINK messages. When it does, - * we can get rid of this function and just grab IFLA_PROTINFO from - * nm_ip6_device_sync_from_netlink(), then get the IFLA_INET6_FLAGS out of - * the PROTINFO. - */ - err = nlmsg_parse (hdr, sizeof (*ifi), tb, IFLA_MAX, link_policy); - if (err < 0) { - nm_log_dbg (LOGD_IP6, "ignoring invalid newlink netlink message " - "while parsing PROTINFO attribute"); - return NULL; - } - - ifi = nlmsg_data (hdr); - if (ifi->ifi_family != AF_INET6) { - nm_log_dbg (LOGD_IP6, "ignoring netlink message family %d", ifi->ifi_family); - return NULL; - } - - device = nm_ip6_manager_get_device (manager, ifi->ifi_index); - if (!device || device->addrconf_complete) { - nm_log_dbg (LOGD_IP6, "(%s): ignoring unknown or completed device", - device ? device->iface : "(none)"); - return NULL; - } - - if (!tb[IFLA_PROTINFO]) { - nm_log_dbg (LOGD_IP6, "(%s): message had no PROTINFO attribute", device->iface); - return NULL; - } - - err = nla_parse_nested (pi, IFLA_INET6_MAX, tb[IFLA_PROTINFO], link_prot_policy); - if (err < 0) { - nm_log_dbg (LOGD_IP6, "(%s): error parsing PROTINFO flags", device->iface); - return NULL; - } - if (!pi[IFLA_INET6_FLAGS]) { - nm_log_dbg (LOGD_IP6, "(%s): message had no PROTINFO flags", device->iface); - return NULL; - } - - device_set_ra_flags (device, nla_get_u32 (pi[IFLA_INET6_FLAGS])); - - return device; -} - -static void -netlink_notification (NMNetlinkMonitor *monitor, struct nl_msg *msg, gpointer user_data) -{ - NMIP6Manager *manager = (NMIP6Manager *) user_data; - NMIP6Device *device; - struct nlmsghdr *hdr; - - hdr = nlmsg_hdr (msg); - nm_log_dbg (LOGD_HW, "netlink event type %d", hdr->nlmsg_type); - switch (hdr->nlmsg_type) { - case RTM_NEWADDR: - case RTM_DELADDR: - device = process_address_change (manager, msg); - break; - case RTM_NEWROUTE: - case RTM_DELROUTE: - device = process_route_change (manager, msg); - break; - case RTM_NEWNDUSEROPT: - device = process_nduseropt (manager, msg); - break; - case RTM_NEWLINK: - device = process_newlink (manager, msg); - break; - default: - return; - } - - if (device) { - nm_ip6_device_sync_from_netlink (device); - } -} - -gboolean -nm_ip6_manager_prepare_interface (NMIP6Manager *manager, - int ifindex, - const guint8 *hwaddr, - guint hwaddr_len, - NMSettingIP6Config *s_ip6, - const char *accept_ra_path) -{ - NMIP6ManagerPrivate *priv; - NMIP6Device *device; - const char *method = NULL; - - g_return_val_if_fail (NM_IS_IP6_MANAGER (manager), FALSE); - g_return_val_if_fail (ifindex > 0, FALSE); - g_return_val_if_fail (hwaddr != NULL, FALSE); - g_return_val_if_fail (hwaddr_len > 0, FALSE); - g_return_val_if_fail (hwaddr_len <= NM_UTILS_HWADDR_LEN_MAX, FALSE); - - priv = NM_IP6_MANAGER_GET_PRIVATE (manager); - - device = nm_ip6_device_new (manager, ifindex, hwaddr, hwaddr_len); - g_return_val_if_fail (device != NULL, FALSE); - g_return_val_if_fail ( strchr (device->iface, '/') == NULL - && strcmp (device->iface, "all") != 0 - && strcmp (device->iface, "default") != 0, - FALSE); - - if (s_ip6) - method = nm_setting_ip6_config_get_method (s_ip6); - if (!method) - method = NM_SETTING_IP6_CONFIG_METHOD_AUTO; - - /* Establish target state and turn router advertisement acceptance on or off */ - if (!strcmp (method, NM_SETTING_IP6_CONFIG_METHOD_LINK_LOCAL)) { - device->target_state = NM_IP6_DEVICE_GOT_LINK_LOCAL; - nm_utils_do_sysctl (accept_ra_path, "0"); - } else { - device->target_state = NM_IP6_DEVICE_GOT_ADDRESS; - nm_utils_do_sysctl (accept_ra_path, "2"); - } - - return TRUE; -} - -static gboolean -poll_ip6_flags (gpointer user_data) -{ - nm_netlink_monitor_request_ip6_info (NM_NETLINK_MONITOR (user_data), NULL); - return TRUE; -} - -#define FIRST_ROUTE(m) ((struct rtnl_route *) nl_cache_get_first (m)) -#define NEXT_ROUTE(m) ((struct rtnl_route *) nl_cache_get_next ((struct nl_object *) m)) - -#define FIRST_ADDR(m) ((struct rtnl_addr *) nl_cache_get_first (m)) -#define NEXT_ADDR(m) ((struct rtnl_addr *) nl_cache_get_next ((struct nl_object *) m)) - -static void -wait_for_no_addresses (NMIP6Manager *self, NMIP6Device *device) -{ - NMIP6ManagerPrivate *priv = NM_IP6_MANAGER_GET_PRIVATE (self); - guint64 now, end; - gboolean has_addrs = TRUE; - - now = end = g_get_real_time (); - end += (G_USEC_PER_SEC * 3); - - while (has_addrs && now < end) { - struct rtnl_addr *rtnladdr; - struct nl_addr *nladdr; - - nl_cache_refill (priv->nlh, priv->addr_cache); - for (has_addrs = FALSE, rtnladdr = FIRST_ADDR (priv->addr_cache); - rtnladdr; - rtnladdr = NEXT_ADDR (rtnladdr)) { - - nladdr = rtnl_addr_get_local (rtnladdr); - if ( rtnl_addr_get_ifindex (rtnladdr) == device->ifindex - && nladdr - && nl_addr_get_family (nladdr) == AF_INET6) { - /* Still IPv6 addresses on the interface */ - has_addrs = TRUE; - nm_log_dbg (LOGD_IP6, "(%s) waiting for cleared IPv6 addresses", device->iface); - g_usleep (100); - now = g_get_real_time (); - break; - } - } - } -} - -void -nm_ip6_manager_begin_addrconf (NMIP6Manager *manager, int ifindex) -{ - NMIP6ManagerPrivate *priv; - NMIP6Device *device; - CallbackInfo *info; - - g_return_if_fail (NM_IS_IP6_MANAGER (manager)); - g_return_if_fail (ifindex > 0); - - priv = NM_IP6_MANAGER_GET_PRIVATE (manager); - - device = (NMIP6Device *) g_hash_table_lookup (priv->devices, GINT_TO_POINTER (ifindex)); - g_return_if_fail (device != NULL); - - nm_log_info (LOGD_IP6, "Activation (%s) Beginning IP6 addrconf.", device->iface); - - device->addrconf_complete = FALSE; - device->ra_flags = 0; - - /* Set up a timeout on the transaction to kill it after the timeout */ - info = callback_info_new (device, FALSE); - device->finish_addrconf_id = g_timeout_add_seconds_full (G_PRIORITY_DEFAULT, - NM_IP6_TIMEOUT, - finish_addrconf, - info, - (GDestroyNotify) g_free); - - /* Bounce IPv6 on the interface to ensure the kernel will start looking for - * new RAs; there doesn't seem to be a better way to do this right now. - */ - if (device->target_state >= NM_IP6_DEVICE_GOT_ADDRESS) { - nm_utils_do_sysctl (device->disable_ip6_path, "1"); - /* Wait until all existing IPv6 addresses have been removed from the link, - * to ensure they don't confuse our IPv6 addressing state machine. - */ - wait_for_no_addresses (manager, device); - nm_utils_do_sysctl (device->disable_ip6_path, "0"); - } - - device->ip6flags_poll_id = g_timeout_add_seconds (1, poll_ip6_flags, priv->monitor); - - /* Kick off the initial IPv6 flags request */ - nm_netlink_monitor_request_ip6_info (priv->monitor, NULL); - - /* Sync flags, etc, from netlink; this will also notice if the - * device is already fully configured and schedule the - * ADDRCONF_COMPLETE signal in that case. - */ - nm_ip6_device_sync_from_netlink (device); -} - -void -nm_ip6_manager_cancel_addrconf (NMIP6Manager *manager, int ifindex) -{ - g_return_if_fail (NM_IS_IP6_MANAGER (manager)); - g_return_if_fail (ifindex > 0); - - g_hash_table_remove (NM_IP6_MANAGER_GET_PRIVATE (manager)->devices, - GINT_TO_POINTER (ifindex)); -} - -NMIP6Config * -nm_ip6_manager_get_ip6_config (NMIP6Manager *manager, int ifindex) -{ - NMIP6ManagerPrivate *priv; - NMIP6Device *device; - NMIP6Config *config; - struct rtnl_addr *rtnladdr; - struct nl_addr *nladdr; - struct in6_addr *addr; - NMIP6Address *ip6addr; - struct rtnl_route *rtnlroute; - struct nl_addr *nldest, *nlgateway; - const struct in6_addr *dest, *gateway; - uint32_t metric; - NMIP6Route *ip6route; - int i; - - g_return_val_if_fail (NM_IS_IP6_MANAGER (manager), NULL); - g_return_val_if_fail (ifindex > 0, NULL); - - priv = NM_IP6_MANAGER_GET_PRIVATE (manager); - - device = (NMIP6Device *) g_hash_table_lookup (priv->devices, - GINT_TO_POINTER (ifindex)); - if (!device) { - nm_log_warn (LOGD_IP6, "(%d): addrconf not started.", ifindex); - return NULL; - } - - config = nm_ip6_config_new (); - if (!config) { - nm_log_err (LOGD_IP6, "(%s): out of memory creating IP6 config object.", - device->iface); - return NULL; - } - - /* Make sure we refill the route and address caches, otherwise we won't get - * up-to-date information here since the netlink route/addr change messages - * may be lagging a bit. - */ - nl_cache_refill (priv->nlh, priv->route_cache); - nl_cache_refill (priv->nlh, priv->addr_cache); - - /* Add routes */ - for (rtnlroute = FIRST_ROUTE (priv->route_cache); rtnlroute; rtnlroute = NEXT_ROUTE (rtnlroute)) { - /* Make sure it's an IPv6 route for this device */ - if (rtnl_route_get_oif (rtnlroute) != device->ifindex) - continue; - if (rtnl_route_get_family (rtnlroute) != AF_INET6) - continue; - - /* And ignore cache/cloned routes as they aren't part of the interface's - * permanent routing configuration. - */ - if (rtnl_route_get_flags (rtnlroute) & RTM_F_CLONED) - continue; - - nldest = rtnl_route_get_dst (rtnlroute); - if (!nldest || nl_addr_get_family (nldest) != AF_INET6) - continue; - dest = nl_addr_get_binary_addr (nldest); - - nlgateway = rtnl_route_get_gateway (rtnlroute); - if (!nlgateway || nl_addr_get_family (nlgateway) != AF_INET6) - continue; - gateway = nl_addr_get_binary_addr (nlgateway); - - if (rtnl_route_get_dst_len (rtnlroute) == 0) { - /* Default gateway route; cache the router's address for later */ - if (!nm_ip6_config_get_gateway (config)) - nm_ip6_config_set_gateway (config, gateway); - continue; - } - - /* Also ignore link-local routes where the destination and gateway are - * the same, which apparently get added by the kernel but return -EINVAL - * when we try to add them via netlink. - */ - if (gateway && IN6_ARE_ADDR_EQUAL (dest, gateway)) - continue; - - ip6route = nm_ip6_route_new (); - nm_ip6_route_set_dest (ip6route, dest); - nm_ip6_route_set_prefix (ip6route, rtnl_route_get_dst_len (rtnlroute)); - nm_ip6_route_set_next_hop (ip6route, gateway); - rtnl_route_get_metric(rtnlroute, 1, &metric); - if (metric != UINT_MAX) - nm_ip6_route_set_metric (ip6route, metric); - nm_ip6_config_take_route (config, ip6route); - } - - /* Add addresses */ - for (rtnladdr = FIRST_ADDR (priv->addr_cache); rtnladdr; rtnladdr = NEXT_ADDR (rtnladdr)) { - if (rtnl_addr_get_ifindex (rtnladdr) != device->ifindex) - continue; - - nladdr = rtnl_addr_get_local (rtnladdr); - if (!nladdr || nl_addr_get_family (nladdr) != AF_INET6) - continue; - - addr = nl_addr_get_binary_addr (nladdr); - ip6addr = nm_ip6_address_new (); - nm_ip6_address_set_prefix (ip6addr, rtnl_addr_get_prefixlen (rtnladdr)); - nm_ip6_address_set_address (ip6addr, addr); - nm_ip6_config_take_address (config, ip6addr); - gateway = nm_ip6_config_get_gateway (config); - if (gateway) - nm_ip6_address_set_gateway (ip6addr, gateway); - } - - /* Add DNS servers */ - if (device->rdnss_servers) { - NMIP6RDNSS *rdnss = (NMIP6RDNSS *)(device->rdnss_servers->data); - - for (i = 0; i < device->rdnss_servers->len; i++) - nm_ip6_config_add_nameserver (config, &rdnss[i].addr); - } - - /* Add DNS domains */ - if (device->dnssl_domains) { - NMIP6DNSSL *dnssl = (NMIP6DNSSL *)(device->dnssl_domains->data); - - for (i = 0; i < device->dnssl_domains->len; i++) - nm_ip6_config_add_domain (config, dnssl[i].domain); - } - - return config; -} - -/******************************************************************/ - -static NMIP6Manager * -nm_ip6_manager_new (void) -{ - NMIP6Manager *manager; - NMIP6ManagerPrivate *priv; - - manager = g_object_new (NM_TYPE_IP6_MANAGER, NULL); - priv = NM_IP6_MANAGER_GET_PRIVATE (manager); - - if (!priv->devices) { - nm_log_err (LOGD_IP6, "not enough memory to initialize IP6 manager tables"); - g_object_unref (manager); - manager = NULL; - } - - return manager; -} - -static NMIP6Manager *singleton = NULL; - -NMIP6Manager * -nm_ip6_manager_get (void) -{ - if (!singleton) { - singleton = nm_ip6_manager_new (); - g_assert (singleton); - } else - g_object_ref (singleton); - - return singleton; -} - -static void -nm_ip6_manager_init (NMIP6Manager *manager) -{ - NMIP6ManagerPrivate *priv = NM_IP6_MANAGER_GET_PRIVATE (manager); - - priv->devices = g_hash_table_new_full (g_direct_hash, g_direct_equal, - NULL, - (GDestroyNotify) nm_ip6_device_destroy); - - priv->monitor = nm_netlink_monitor_get (); - nm_netlink_monitor_subscribe (priv->monitor, RTNLGRP_IPV6_IFADDR, NULL); - nm_netlink_monitor_subscribe (priv->monitor, RTNLGRP_IPV6_PREFIX, NULL); - nm_netlink_monitor_subscribe (priv->monitor, RTNLGRP_IPV6_ROUTE, NULL); - nm_netlink_monitor_subscribe (priv->monitor, RTNLGRP_ND_USEROPT, NULL); - nm_netlink_monitor_subscribe (priv->monitor, RTNLGRP_LINK, NULL); - - priv->netlink_id = g_signal_connect (priv->monitor, "notification", - G_CALLBACK (netlink_notification), manager); - - priv->nlh = nm_netlink_get_default_handle (); - rtnl_addr_alloc_cache (priv->nlh, &priv->addr_cache); - g_warn_if_fail (priv->addr_cache != NULL); - rtnl_route_alloc_cache (priv->nlh, NETLINK_ROUTE, NL_AUTO_PROVIDE, &priv->route_cache); - g_warn_if_fail (priv->route_cache != NULL); -} - -static void -finalize (GObject *object) -{ - NMIP6ManagerPrivate *priv = NM_IP6_MANAGER_GET_PRIVATE (object); - - g_signal_handler_disconnect (priv->monitor, priv->netlink_id); - - g_hash_table_destroy (priv->devices); - g_object_unref (priv->monitor); - nl_cache_free (priv->addr_cache); - nl_cache_free (priv->route_cache); - - singleton = NULL; - - G_OBJECT_CLASS (nm_ip6_manager_parent_class)->finalize (object); -} - -static void -nm_ip6_manager_class_init (NMIP6ManagerClass *manager_class) -{ - GObjectClass *object_class = G_OBJECT_CLASS (manager_class); - - g_type_class_add_private (manager_class, sizeof (NMIP6ManagerPrivate)); - - /* virtual methods */ - object_class->finalize = finalize; - - /* signals */ - signals[ADDRCONF_COMPLETE] = - g_signal_new ("addrconf-complete", - G_OBJECT_CLASS_TYPE (object_class), - G_SIGNAL_RUN_FIRST, - G_STRUCT_OFFSET (NMIP6ManagerClass, addrconf_complete), - NULL, NULL, - _nm_marshal_VOID__INT_UINT_BOOLEAN, - G_TYPE_NONE, 3, G_TYPE_INT, G_TYPE_UINT, G_TYPE_BOOLEAN); - - signals[CONFIG_CHANGED] = - g_signal_new ("config-changed", - G_OBJECT_CLASS_TYPE (object_class), - G_SIGNAL_RUN_FIRST, - G_STRUCT_OFFSET (NMIP6ManagerClass, config_changed), - NULL, NULL, - _nm_marshal_VOID__INT_UINT_BOOLEAN, - G_TYPE_NONE, 3, G_TYPE_INT, G_TYPE_UINT, G_TYPE_BOOLEAN); -} - diff --git a/src/ip6-manager/nm-ip6-manager.h b/src/ip6-manager/nm-ip6-manager.h deleted file mode 100644 index 886399f7..00000000 --- a/src/ip6-manager/nm-ip6-manager.h +++ /dev/null @@ -1,88 +0,0 @@ -/* -*- Mode: C; tab-width: 4; indent-tabs-mode: t; c-basic-offset: 4 -*- */ -/* nm-ip6-manager.c - Handle IPv6 address configuration for NetworkManager - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2, or (at your option) - * any later version. - * - * 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 Street, Fifth Floor, Boston, MA 02110-1301 USA. - * - * Copyright (C) 2009 - 2010 Red Hat, Inc. - */ - -#ifndef NM_IP6_MANAGER_H -#define NM_IP6_MANAGER_H - -#include <glib.h> -#include <glib-object.h> - -#include <nm-setting-ip6-config.h> - -#include "nm-ip6-config.h" - -#define NM_TYPE_IP6_MANAGER (nm_ip6_manager_get_type ()) -#define NM_IP6_MANAGER(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), NM_TYPE_IP6_MANAGER, NMIP6Manager)) -#define NM_IP6_MANAGER_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), NM_TYPE_IP6_MANAGER, NMIP6ManagerClass)) -#define NM_IS_IP6_MANAGER(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), NM_TYPE_IP6_MANAGER)) -#define NM_IS_IP6_MANAGER_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), NM_TYPE_IP6_MANAGER)) -#define NM_IP6_MANAGER_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), NM_TYPE_IP6_MANAGER, NMIP6ManagerClass)) - -enum { - IP6_DHCP_OPT_NONE = 0, - IP6_DHCP_OPT_OTHERCONF, - IP6_DHCP_OPT_MANAGED -}; - -typedef struct { - GObject parent; -} NMIP6Manager; - -typedef struct { - GObjectClass parent; - - /* Signals */ - - /* addrconf_complete is emitted only during initial configuration to indicate - * that the initial configuration is complete. - */ - void (*addrconf_complete) (NMIP6Manager *manager, - guint32 ifindex, - guint dhcp_opts, - gboolean success); - - /* config_changed gets emitted only *after* initial configuration is - * complete; it's like DHCP renew and indicates that the existing config - * of the interface has changed. - */ - void (*config_changed) (NMIP6Manager *manager, - guint32 ifindex, - guint dhcp_opts, - gboolean success); -} NMIP6ManagerClass; - -GType nm_ip6_manager_get_type (void); - -NMIP6Manager *nm_ip6_manager_get (void); -gboolean nm_ip6_manager_prepare_interface (NMIP6Manager *manager, - int ifindex, - const guint8 *hwaddr, - guint hwaddr_len, - NMSettingIP6Config *s_ip6, - const char *accept_ra_path); -void nm_ip6_manager_begin_addrconf (NMIP6Manager *manager, - int ifindex); -void nm_ip6_manager_cancel_addrconf (NMIP6Manager *manager, - int ifindex); - -NMIP6Config * nm_ip6_manager_get_ip6_config (NMIP6Manager *manager, - int ifindex); - -#endif /* NM_IP6_MANAGER_H */ |