diff options
Diffstat (limited to 'main/openvpn/openvpn-2.2.2-ipv6.patch')
| -rw-r--r-- | main/openvpn/openvpn-2.2.2-ipv6.patch | 3517 |
1 files changed, 0 insertions, 3517 deletions
diff --git a/main/openvpn/openvpn-2.2.2-ipv6.patch b/main/openvpn/openvpn-2.2.2-ipv6.patch deleted file mode 100644 index f8b8015ea6..0000000000 --- a/main/openvpn/openvpn-2.2.2-ipv6.patch +++ /dev/null @@ -1,3517 +0,0 @@ -diff --git a/forward.c b/forward.c -index 87d05cc..1f3d435 100644 ---- a/forward.c -+++ b/forward.c -@@ -262,7 +262,8 @@ send_control_channel_string (struct context *c, const char *str, int msglevel) - static void - check_add_routes_action (struct context *c, const bool errors) - { -- do_route (&c->options, c->c1.route_list, c->c1.tuntap, c->plugins, c->c2.es); -+ do_route (&c->options, c->c1.route_list, c->c1.route_ipv6_list, -+ c->c1.tuntap, c->plugins, c->c2.es); - update_time (); - event_timeout_clear (&c->c2.route_wakeup); - event_timeout_clear (&c->c2.route_wakeup_expire); -diff --git a/helper.c b/helper.c -index a9d7fd9..266b246 100644 ---- a/helper.c -+++ b/helper.c -@@ -142,6 +142,55 @@ helper_client_server (struct options *o) - - #if P2MP - #if P2MP_SERVER -+ -+ /* -+ * -+ * HELPER DIRECTIVE for IPv6 -+ * -+ * server-ipv6 2001:db8::/64 -+ * -+ * EXPANDS TO: -+ * -+ * tun-ipv6 -+ * push "tun-ipv6" -+ * ifconfig-ipv6 2001:db8::1 2001:db8::2 -+ * if !nopool: -+ * ifconfig-ipv6-pool 2001:db8::1:0/64 -+ * -+ */ -+ if ( o->server_ipv6_defined ) -+ { -+ if ( ! o->server_defined ) -+ { -+ msg (M_USAGE, "--server-ipv6 must be used together with --server"); -+ } -+ if ( o->server_flags & SF_NOPOOL ) -+ { -+ msg( M_USAGE, "--server-ipv6 is incompatible with 'nopool' option" ); -+ } -+ if ( o->ifconfig_ipv6_pool_defined ) -+ { -+ msg( M_USAGE, "--server-ipv6 already defines an ifconfig-ipv6-pool, so you can't also specify --ifconfig-pool explicitly"); -+ } -+ -+ /* local ifconfig is "base address + 1" and "+2" */ -+ o->ifconfig_ipv6_local = -+ print_in6_addr( add_in6_addr( o->server_network_ipv6, 1), 0, &o->gc ); -+ o->ifconfig_ipv6_remote = -+ print_in6_addr( add_in6_addr( o->server_network_ipv6, 2), 0, &o->gc ); -+ -+ /* pool starts at "base address + 0x10000" */ -+ ASSERT( o->server_netbits_ipv6 < 96 ); /* want 32 bits */ -+ o->ifconfig_ipv6_pool_defined = true; -+ o->ifconfig_ipv6_pool_base = -+ add_in6_addr( o->server_network_ipv6, 0x10000 ); -+ o->ifconfig_ipv6_pool_netbits = o->server_netbits_ipv6; -+ -+ o->tun_ipv6 = true; -+ -+ push_option( o, "tun-ipv6", M_USAGE ); -+ } -+ - /* - * - * HELPER DIRECTIVE: -diff --git a/init.c b/init.c -index d47a4ef..7fc8eb7 100644 ---- a/init.c -+++ b/init.c -@@ -843,7 +843,7 @@ do_persist_tuntap (const struct options *options) - msg (M_FATAL|M_OPTERR, - "options --mktun or --rmtun should only be used together with --dev"); - tuncfg (options->dev, options->dev_type, options->dev_node, -- options->tun_ipv6, options->persist_mode, -+ options->persist_mode, - options->username, options->groupname, &options->tuntap_options); - if (options->persist_mode && options->lladdr) - set_lladdr(options->dev, options->lladdr, NULL); -@@ -1066,6 +1066,8 @@ do_alloc_route_list (struct context *c) - { - if (c->options.routes && !c->c1.route_list) - c->c1.route_list = new_route_list (c->options.max_routes, &c->gc); -+ if (c->options.routes_ipv6 && !c->c1.route_ipv6_list) -+ c->c1.route_ipv6_list = new_route_ipv6_list (c->options.max_routes, &c->gc); - } - - -@@ -1108,6 +1110,45 @@ do_init_route_list (const struct options *options, - } - } - -+static void -+do_init_route_ipv6_list (const struct options *options, -+ struct route_ipv6_list *route_ipv6_list, -+ bool fatal, -+ struct env_set *es) -+{ -+ const char *gw = NULL; -+ int dev = dev_type_enum (options->dev, options->dev_type); -+ int metric = 0; -+ -+ if (dev != DEV_TYPE_TUN ) -+ msg( M_WARN, "IPv6 routes on TAP devices are going to fail on some platforms (need gateway spec)" ); /* TODO-GERT */ -+ -+ gw = options->ifconfig_ipv6_remote; /* default GW = remote end */ -+#if 0 /* not yet done for IPv6 - TODO!*/ -+ if ( options->route_ipv6_default_gateway ) /* override? */ -+ gw = options->route_ipv6_default_gateway; -+#endif -+ -+ if (options->route_default_metric) -+ metric = options->route_default_metric; -+ -+ if (!init_route_ipv6_list (route_ipv6_list, -+ options->routes_ipv6, -+ gw, -+ metric, -+ es)) -+ { -+ if (fatal) -+ openvpn_exit (OPENVPN_EXIT_STATUS_ERROR); /* exit point */ -+ } -+ else -+ { -+ /* copy routes to environment */ -+ setenv_routes_ipv6 (es, route_ipv6_list); -+ } -+} -+ -+ - /* - * Called after all initialization has been completed. - */ -@@ -1172,12 +1213,13 @@ initialization_sequence_completed (struct context *c, const unsigned int flags) - void - do_route (const struct options *options, - struct route_list *route_list, -+ struct route_ipv6_list *route_ipv6_list, - const struct tuntap *tt, - const struct plugin_list *plugins, - struct env_set *es) - { -- if (!options->route_noexec && route_list) -- add_routes (route_list, tt, ROUTE_OPTION_FLAGS (options), es); -+ if (!options->route_noexec && ( route_list || route_ipv6_list ) ) -+ add_routes (route_list, route_ipv6_list, tt, ROUTE_OPTION_FLAGS (options), es); - - if (plugin_defined (plugins, OPENVPN_PLUGIN_ROUTE_UP)) - { -@@ -1234,11 +1276,16 @@ do_init_tun (struct context *c) - c->options.topology, - c->options.ifconfig_local, - c->options.ifconfig_remote_netmask, -+ c->options.ifconfig_ipv6_local, -+ c->options.ifconfig_ipv6_remote, - addr_host (&c->c1.link_socket_addr.local), - addr_host (&c->c1.link_socket_addr.remote), - !c->options.ifconfig_nowarn, - c->c2.es); - -+ /* flag tunnel for IPv6 config if --tun-ipv6 is set */ -+ c->c1.tuntap->ipv6 = c->options.tun_ipv6; -+ - init_tun_post (c->c1.tuntap, - &c->c2.frame, - &c->options.tuntap_options); -@@ -1270,6 +1317,8 @@ do_open_tun (struct context *c) - /* parse and resolve the route option list */ - if (c->options.routes && c->c1.route_list && c->c2.link_socket) - do_init_route_list (&c->options, c->c1.route_list, &c->c2.link_socket->info, false, c->c2.es); -+ if (c->options.routes_ipv6 && c->c1.route_ipv6_list ) -+ do_init_route_ipv6_list (&c->options, c->c1.route_ipv6_list, false, c->c2.es); - - /* do ifconfig */ - if (!c->options.ifconfig_noexec -@@ -1286,7 +1335,7 @@ do_open_tun (struct context *c) - - /* open the tun device */ - open_tun (c->options.dev, c->options.dev_type, c->options.dev_node, -- c->options.tun_ipv6, c->c1.tuntap); -+ c->c1.tuntap); - - /* set the hardware address */ - if (c->options.lladdr) -@@ -1315,7 +1364,8 @@ do_open_tun (struct context *c) - - /* possibly add routes */ - if (!c->options.route_delay_defined) -- do_route (&c->options, c->c1.route_list, c->c1.tuntap, c->plugins, c->c2.es); -+ do_route (&c->options, c->c1.route_list, c->c1.route_ipv6_list, -+ c->c1.tuntap, c->plugins, c->c2.es); - - /* - * Did tun/tap driver give us an MTU? -@@ -1389,8 +1439,9 @@ do_close_tun (struct context *c, bool force) - #endif - - /* delete any routes we added */ -- if (c->c1.route_list) -- delete_routes (c->c1.route_list, c->c1.tuntap, ROUTE_OPTION_FLAGS (&c->options), c->c2.es); -+ if (c->c1.route_list || c->c1.route_ipv6_list ) -+ delete_routes (c->c1.route_list, c->c1.route_ipv6_list, -+ c->c1.tuntap, ROUTE_OPTION_FLAGS (&c->options), c->c2.es); - - /* actually close tun/tap device based on --down-pre flag */ - if (!c->options.down_pre) -diff --git a/init.h b/init.h -index cf5ca8a..5a1d1dc 100644 ---- a/init.h -+++ b/init.h -@@ -63,6 +63,7 @@ void init_instance (struct context *c, const struct env_set *env, const unsigned - - void do_route (const struct options *options, - struct route_list *route_list, -+ struct route_ipv6_list *route_ipv6_list, - const struct tuntap *tt, - const struct plugin_list *plugins, - struct env_set *es); -diff --git a/misc.c b/misc.c -index 4067d85..9d351f4 100644 ---- a/misc.c -+++ b/misc.c -@@ -1001,7 +1001,9 @@ setenv_str_ex (struct env_set *es, - { - const char *str = construct_name_value (name_tmp, val_tmp, &gc); - env_set_add (es, str); -- /*msg (M_INFO, "SETENV_ES '%s'", str);*/ -+#if DEBUG_VERBOSE_SETENV -+ msg (M_INFO, "SETENV_ES '%s'", str); -+#endif - } - else - env_set_del (es, name_tmp); -diff --git a/mroute.c b/mroute.c -index 1b3488f..6cfec27 100644 ---- a/mroute.c -+++ b/mroute.c -@@ -88,12 +88,33 @@ mroute_get_in_addr_t (struct mroute_addr *ma, const in_addr_t src, unsigned int - } - } - -+static inline void -+mroute_get_in6_addr (struct mroute_addr *ma, const struct in6_addr src, unsigned int mask) -+{ -+ if (ma) -+ { -+ ma->type = MR_ADDR_IPV6 | mask; -+ ma->netbits = 0; -+ ma->len = 16; -+ *(struct in6_addr *)ma->addr = src; -+ } -+} -+ - static inline bool - mroute_is_mcast (const in_addr_t addr) - { - return ((addr & htonl(IP_MCAST_SUBNET_MASK)) == htonl(IP_MCAST_NETWORK)); - } - -+/* RFC 4291, 2.7, "binary 11111111 at the start of an address identifies -+ * the address as being a multicast address" -+ */ -+static inline bool -+mroute_is_mcast_ipv6 (const struct in6_addr addr) -+{ -+ return (addr.s6_addr[0] == 0xff); -+} -+ - #ifdef ENABLE_PF - - static unsigned int -@@ -157,13 +178,29 @@ mroute_extract_addr_ipv4 (struct mroute_addr *src, - } - break; - case 6: -- { -- if( !ipv6warned ) { -- msg (M_WARN, "IPv6 in tun mode is not supported in OpenVPN 2.2"); -- ipv6warned = true; -- } -- break; -- } -+ if (BLEN (buf) >= (int) sizeof (struct openvpn_ipv6hdr)) -+ { -+ const struct openvpn_ipv6hdr *ipv6 = (const struct openvpn_ipv6hdr *) BPTR (buf); -+#if 0 /* very basic debug */ -+ struct gc_arena gc = gc_new (); -+ msg( M_INFO, "IPv6 packet! src=%s, dst=%s", -+ print_in6_addr( ipv6->saddr, 0, &gc ), -+ print_in6_addr( ipv6->daddr, 0, &gc )); -+ gc_free (&gc); -+#endif -+ -+ mroute_get_in6_addr (src, ipv6->saddr, 0); -+ mroute_get_in6_addr (dest, ipv6->daddr, 0); -+ -+ if (mroute_is_mcast_ipv6 (ipv6->daddr)) -+ ret |= MROUTE_EXTRACT_MCAST; -+ -+ ret |= MROUTE_EXTRACT_SUCCEEDED; -+ } -+ break; -+ default: -+ msg (M_WARN, "IP packet with unknown IP version=%d seen", -+ OPENVPN_IPH_GET_VER (*BPTR(buf))); - } - } - return ret; -@@ -257,14 +294,36 @@ bool mroute_extract_openvpn_sockaddr (struct mroute_addr *addr, - * Zero off the host bits in an address, leaving - * only the network bits, using the netbits member of - * struct mroute_addr as the controlling parameter. -+ * -+ * TODO: this is called for route-lookup for every yet-unhashed -+ * destination address, so for lots of active net-iroutes, this -+ * might benefit from some "zeroize 32 bit at a time" improvements - */ - void - mroute_addr_mask_host_bits (struct mroute_addr *ma) - { - in_addr_t addr = ntohl(*(in_addr_t*)ma->addr); -- ASSERT ((ma->type & MR_ADDR_MASK) == MR_ADDR_IPV4); -- addr &= netbits_to_netmask (ma->netbits); -- *(in_addr_t*)ma->addr = htonl (addr); -+ if ((ma->type & MR_ADDR_MASK) == MR_ADDR_IPV4) -+ { -+ addr &= netbits_to_netmask (ma->netbits); -+ *(in_addr_t*)ma->addr = htonl (addr); -+ } -+ else if ((ma->type & MR_ADDR_MASK) == MR_ADDR_IPV6) -+ { -+ int byte = ma->len-1; /* rightmost byte in address */ -+ int bits_to_clear = 128 - ma->netbits; -+ -+ while( byte >= 0 && bits_to_clear > 0 ) -+ { -+ if ( bits_to_clear >= 8 ) -+ { ma->addr[byte--] = 0; bits_to_clear -= 8; } -+ else -+ { ma->addr[byte--] &= (~0 << bits_to_clear); bits_to_clear = 0; } -+ } -+ ASSERT( bits_to_clear == 0 ); -+ } -+ else -+ ASSERT(0); - } - - /* -@@ -342,17 +401,24 @@ mroute_addr_print_ex (const struct mroute_addr *ma, - } - break; - case MR_ADDR_IPV6: -- buf_printf (&out, "IPV6"); -- break; -- default: -- buf_printf (&out, "UNKNOWN"); -- break; -- } -- return BSTR (&out); -- } -- else -- return "[NULL]"; --} -+ { -+ buf_printf (&out, "%s", -+ print_in6_addr( *(struct in6_addr*)&maddr.addr, 0, gc)); -+ if (maddr.type & MR_WITH_NETBITS) -+ { -+ buf_printf (&out, "/%d", maddr.netbits); -+ } -+ } -+ break; -+ default: -+ buf_printf (&out, "UNKNOWN"); -+ break; -+ } -+ return BSTR (&out); -+ } -+ else -+ return "[NULL]"; -+ } - - /* - * mroute_helper's main job is keeping track of -@@ -423,6 +489,40 @@ mroute_helper_del_iroute (struct mroute_helper *mh, const struct iroute *ir) - } - } - -+/* this is a bit inelegant, we really should have a helper to that -+ * is only passed the netbits value, and not the whole struct iroute * -+ * - thus one helper could do IPv4 and IPv6. For the sake of "not change -+ * code unrelated to IPv4" this is left for later cleanup, for now. -+ */ -+void -+mroute_helper_add_iroute6 (struct mroute_helper *mh, -+ const struct iroute_ipv6 *ir6) -+{ -+ if (ir6->netbits >= 0) -+ { -+ ASSERT (ir6->netbits < MR_HELPER_NET_LEN); -+ ++mh->cache_generation; -+ ++mh->net_len_refcount[ir6->netbits]; -+ if (mh->net_len_refcount[ir6->netbits] == 1) -+ mroute_helper_regenerate (mh); -+ } -+} -+ -+void -+mroute_helper_del_iroute6 (struct mroute_helper *mh, -+ const struct iroute_ipv6 *ir6) -+{ -+ if (ir6->netbits >= 0) -+ { -+ ASSERT (ir6->netbits < MR_HELPER_NET_LEN); -+ ++mh->cache_generation; -+ --mh->net_len_refcount[ir6->netbits]; -+ ASSERT (mh->net_len_refcount[ir6->netbits] >= 0); -+ if (!mh->net_len_refcount[ir6->netbits]) -+ mroute_helper_regenerate (mh); -+ } -+} -+ - void - mroute_helper_free (struct mroute_helper *mh) - { -diff --git a/mroute.h b/mroute.h -index 7265001..b72b5ff 100644 ---- a/mroute.h -+++ b/mroute.h -@@ -85,7 +85,7 @@ struct mroute_addr { - /* - * Number of bits in an address. Should be raised for IPv6. - */ --#define MR_HELPER_NET_LEN 32 -+#define MR_HELPER_NET_LEN 129 - - /* - * Used to help maintain CIDR routing table. -@@ -127,6 +127,8 @@ struct mroute_helper *mroute_helper_init (int ageable_ttl_secs); - void mroute_helper_free (struct mroute_helper *mh); - void mroute_helper_add_iroute (struct mroute_helper *mh, const struct iroute *ir); - void mroute_helper_del_iroute (struct mroute_helper *mh, const struct iroute *ir); -+void mroute_helper_add_iroute6 (struct mroute_helper *mh, const struct iroute_ipv6 *ir6); -+void mroute_helper_del_iroute6 (struct mroute_helper *mh, const struct iroute_ipv6 *ir6); - - /* - * Given a raw packet in buf, return the src and dest -diff --git a/multi.c b/multi.c -index 22c0a3f..f703b8d 100644 ---- a/multi.c -+++ b/multi.c -@@ -316,25 +316,18 @@ multi_init (struct multi_context *m, struct context *t, bool tcp_mode, int threa - */ - if (t->options.ifconfig_pool_defined) - { -- if (dev == DEV_TYPE_TAP) -- { -- m->ifconfig_pool = ifconfig_pool_init (IFCONFIG_POOL_INDIV, -- t->options.ifconfig_pool_start, -- t->options.ifconfig_pool_end, -- t->options.duplicate_cn); -- } -- else if (dev == DEV_TYPE_TUN) -- { -- m->ifconfig_pool = ifconfig_pool_init ( -- (t->options.topology == TOP_NET30) ? IFCONFIG_POOL_30NET : IFCONFIG_POOL_INDIV, -- t->options.ifconfig_pool_start, -- t->options.ifconfig_pool_end, -- t->options.duplicate_cn); -- } -- else -- { -- ASSERT (0); -- } -+ int pool_type = IFCONFIG_POOL_INDIV; -+ -+ if ( dev == DEV_TYPE_TUN && t->options.topology == TOP_NET30 ) -+ pool_type = IFCONFIG_POOL_30NET; -+ -+ m->ifconfig_pool = ifconfig_pool_init (pool_type, -+ t->options.ifconfig_pool_start, -+ t->options.ifconfig_pool_end, -+ t->options.duplicate_cn, -+ t->options.ifconfig_ipv6_pool_defined, -+ t->options.ifconfig_ipv6_pool_base, -+ t->options.ifconfig_ipv6_pool_netbits ); - - /* reload pool data from file */ - if (t->c1.ifconfig_pool_persist) -@@ -429,10 +422,14 @@ multi_del_iroutes (struct multi_context *m, - struct multi_instance *mi) - { - const struct iroute *ir; -+ const struct iroute_ipv6 *ir6; - if (TUNNEL_TYPE (mi->context.c1.tuntap) == DEV_TYPE_TUN) - { - for (ir = mi->context.options.iroutes; ir != NULL; ir = ir->next) - mroute_helper_del_iroute (m->route_helper, ir); -+ -+ for ( ir6 = mi->context.options.iroutes_ipv6; ir6 != NULL; ir6 = ir6->next ) -+ mroute_helper_del_iroute6 (m->route_helper, ir6); - } - } - -@@ -1078,6 +1075,37 @@ multi_learn_in_addr_t (struct multi_context *m, - } - } - -+static struct multi_instance * -+multi_learn_in6_addr (struct multi_context *m, -+ struct multi_instance *mi, -+ struct in6_addr a6, -+ int netbits, /* -1 if host route, otherwise # of network bits in address */ -+ bool primary) -+{ -+ struct mroute_addr addr; -+ -+ addr.len = 16; -+ addr.type = MR_ADDR_IPV6; -+ addr.netbits = 0; -+ memcpy( &addr.addr, &a6, sizeof(a6) ); -+ -+ if (netbits >= 0) -+ { -+ addr.type |= MR_WITH_NETBITS; -+ addr.netbits = (uint8_t) netbits; -+ mroute_addr_mask_host_bits( &addr ); -+ } -+ -+ { -+ struct multi_instance *owner = multi_learn_addr (m, mi, &addr, 0); -+#ifdef MANAGEMENT_DEF_AUTH -+ if (management && owner) -+ management_learn_addr (management, &mi->context.c2.mda_context, &addr, primary); -+#endif -+ return owner; -+ } -+} -+ - /* - * A new client has connected, add routes (server -> client) - * to internal routing table. -@@ -1088,6 +1116,7 @@ multi_add_iroutes (struct multi_context *m, - { - struct gc_arena gc = gc_new (); - const struct iroute *ir; -+ const struct iroute_ipv6 *ir6; - if (TUNNEL_TYPE (mi->context.c1.tuntap) == DEV_TYPE_TUN) - { - mi->did_iroutes = true; -@@ -1107,6 +1136,22 @@ multi_add_iroutes (struct multi_context *m, - - multi_learn_in_addr_t (m, mi, ir->network, ir->netbits, false); - } -+ for ( ir6 = mi->context.options.iroutes_ipv6; ir6 != NULL; ir6 = ir6->next ) -+ { -+ if (ir6->netbits >= 0) -+ msg (D_MULTI_LOW, "MULTI: internal route %s/%d -> %s", -+ print_in6_addr (ir6->network, 0, &gc), -+ ir6->netbits, -+ multi_instance_string (mi, false, &gc)); -+ else -+ msg (D_MULTI_LOW, "MULTI: internal route %s -> %s", -+ print_in6_addr (ir6->network, 0, &gc), -+ multi_instance_string (mi, false, &gc)); -+ -+ mroute_helper_add_iroute6 (m->route_helper, ir6); -+ -+ multi_learn_in6_addr (m, mi, ir6->network, ir6->netbits, false); -+ } - } - gc_free (&gc); - } -@@ -1192,21 +1237,37 @@ multi_select_virtual_addr (struct multi_context *m, struct multi_instance *mi) - mi->context.c2.push_ifconfig_defined = true; - mi->context.c2.push_ifconfig_local = mi->context.options.push_ifconfig_local; - mi->context.c2.push_ifconfig_remote_netmask = mi->context.options.push_ifconfig_remote_netmask; -+ -+ /* the current implementation does not allow "static IPv4, pool IPv6", -+ * (see below) so issue a warning if that happens - don't break the -+ * session, though, as we don't even know if this client WANTS IPv6 -+ */ -+ if ( mi->context.c1.tuntap->ipv6 && -+ mi->context.options.ifconfig_ipv6_pool_defined && -+ ! mi->context.options.push_ifconfig_ipv6_defined ) -+ { -+ msg( M_INFO, "MULTI_sva: WARNING: if --ifconfig-push is used for IPv4, automatic IPv6 assignment from --ifconfig-ipv6-pool does not work. Use --ifconfig-ipv6-push for IPv6 then." ); -+ } - } - else if (m->ifconfig_pool && mi->vaddr_handle < 0) /* otherwise, choose a pool address */ - { - in_addr_t local=0, remote=0; -+ struct in6_addr remote_ipv6; - const char *cn = NULL; - - if (!mi->context.options.duplicate_cn) - cn = tls_common_name (mi->context.c2.tls_multi, true); - -- mi->vaddr_handle = ifconfig_pool_acquire (m->ifconfig_pool, &local, &remote, cn); -+ mi->vaddr_handle = ifconfig_pool_acquire (m->ifconfig_pool, &local, &remote, &remote_ipv6, cn); - if (mi->vaddr_handle >= 0) - { - const int tunnel_type = TUNNEL_TYPE (mi->context.c1.tuntap); - const int tunnel_topology = TUNNEL_TOPOLOGY (mi->context.c1.tuntap); - -+ msg( M_INFO, "MULTI_sva: pool returned IPv4=%s, IPv6=%s", -+ print_in_addr_t( remote, 0, &gc ), -+ print_in6_addr( remote_ipv6, 0, &gc ) ); -+ - /* set push_ifconfig_remote_netmask from pool ifconfig address(es) */ - mi->context.c2.push_ifconfig_local = remote; - if (tunnel_type == DEV_TYPE_TAP || (tunnel_type == DEV_TYPE_TUN && tunnel_topology == TOP_SUBNET)) -@@ -1228,12 +1289,46 @@ multi_select_virtual_addr (struct multi_context *m, struct multi_instance *mi) - else - msg (D_MULTI_ERRORS, "MULTI: no --ifconfig-pool netmask parameter is available to push to %s", - multi_instance_string (mi, false, &gc)); -+ -+ if ( mi->context.options.ifconfig_ipv6_pool_defined ) -+ { -+ mi->context.c2.push_ifconfig_ipv6_local = remote_ipv6; -+ mi->context.c2.push_ifconfig_ipv6_remote = -+ mi->context.c1.tuntap->local_ipv6; -+ mi->context.c2.push_ifconfig_ipv6_netbits = -+ mi->context.options.ifconfig_ipv6_pool_netbits; -+ mi->context.c2.push_ifconfig_ipv6_defined = true; -+ } - } - else - { - msg (D_MULTI_ERRORS, "MULTI: no free --ifconfig-pool addresses are available"); - } - } -+ -+ /* IPv6 push_ifconfig is a bit problematic - since IPv6 shares the -+ * pool handling with IPv4, the combination "static IPv4, dynamic IPv6" -+ * will fail (because no pool will be allocated in this case). -+ * OTOH, this doesn't make too much sense in reality - and the other -+ * way round ("dynamic IPv4, static IPv6") or "both static" makes sense -+ * -> and so it's implemented right now -+ */ -+ if ( mi->context.c1.tuntap->ipv6 && -+ mi->context.options.push_ifconfig_ipv6_defined ) -+ { -+ mi->context.c2.push_ifconfig_ipv6_local = -+ mi->context.options.push_ifconfig_ipv6_local; -+ mi->context.c2.push_ifconfig_ipv6_remote = -+ mi->context.options.push_ifconfig_ipv6_remote; -+ mi->context.c2.push_ifconfig_ipv6_netbits = -+ mi->context.options.push_ifconfig_ipv6_netbits; -+ mi->context.c2.push_ifconfig_ipv6_defined = true; -+ -+ msg( M_INFO, "MULTI_sva: push_ifconfig_ipv6 %s/%d", -+ print_in6_addr( mi->context.c2.push_ifconfig_ipv6_local, 0, &gc ), -+ mi->context.c2.push_ifconfig_ipv6_netbits ); -+ } -+ - gc_free (&gc); - } - -@@ -1272,6 +1367,11 @@ multi_set_virtual_addr_env (struct multi_context *m, struct multi_instance *mi) - SA_SET_IF_NONZERO); - } - } -+ -+ /* TODO: I'm not exactly sure what these environment variables are -+ * used for, but if we have them for IPv4, we should also have -+ * them for IPv6, no? -+ */ - } - - /* -@@ -1661,6 +1761,15 @@ multi_connection_established (struct multi_context *m, struct multi_instance *mi - print_in_addr_t (mi->context.c2.push_ifconfig_local, 0, &gc)); - } - -+ if (mi->context.c2.push_ifconfig_ipv6_defined) -+ { -+ multi_learn_in6_addr (m, mi, mi->context.c2.push_ifconfig_ipv6_local, -1, true); -+ /* TODO: find out where addresses are "unlearned"!! */ -+ msg (D_MULTI_LOW, "MULTI: primary virtual IPv6 for %s: %s", -+ multi_instance_string (mi, false, &gc), -+ print_in6_addr (mi->context.c2.push_ifconfig_ipv6_local, 0, &gc)); -+ } -+ - /* add routes locally, pointing to new client, if - --iroute options have been specified */ - multi_add_iroutes (m, mi); -diff --git a/openvpn.8 b/openvpn.8 -index 67a9779..5322618 100644 ---- a/openvpn.8 -+++ b/openvpn.8 -@@ -794,6 +794,8 @@ or - .B \-\-dev tunX. - A warning will be displayed - if no specific IPv6 TUN support for your OS has been compiled into OpenVPN. -+ -+See below for further IPv6-related configuration options. - .\"********************************************************* - .TP - .B \-\-dev-node node -@@ -4949,6 +4951,57 @@ if certificates are stored as private objects. - .B \-\-verb - option can be used BEFORE this option to produce debugging information. - .\"********************************************************* -+.SS IPv6 Related Options -+.\"********************************************************* -+The following options exist to support IPv6 tunneling in peer-to-peer -+and client-server mode. As of now, this is just very basic -+documentation of the IPv6-related options. More documentation can be -+found on http://www.greenie.net/ipv6/openvpn.html. -+.TP -+.B --ifconfig-ipv6 ipv6addr/bits ipv6remote -+configure IPv6 address -+.B ipv6addr/bits -+on the ``tun'' device. The second parameter is used as route target for -+.B --route-ipv6 -+if no gateway is specified. -+.TP -+.B --route-ipv6 ipv6addr/bits [gateway] [metric] -+setup IPv6 routing in the system to send the specified IPv6 network -+into OpenVPN's ``tun'' device -+.TP -+.B --server-ipv6 ipv6addr/bits -+convenience-function to enable a number of IPv6 related options at -+once, namely -+.B --ifconfig-ipv6, --ifconfig-ipv6-pool, --tun-ipv6 -+and -+.B --push tun-ipv6 -+Is only accepted if ``--mode server'' or ``--server'' is set. -+.TP -+.B --ifconfig-ipv6-pool ipv6addr/bits -+Specify an IPv6 address pool for dynamic assignment to clients. The -+pool starts at -+.B ipv6addr -+and increments by +1 for every new client (linear mode). The -+.B /bits -+setting controls the size of the pool. -+.TP -+.B --ifconfig-ipv6-push ipv6addr/bits ipv6remote -+for ccd/ per-client static IPv6 interface configuration, see -+.B --client-config-dir -+and -+.B --ifconfig-push -+for more details. -+.TP -+.B --iroute-ipv6 ipv6addr/bits -+for ccd/ per-client static IPv6 route configuration, see -+.B --iroute -+for more details how to setup and use this, and how -+.B --iroute -+and -+.B --route -+interact. -+ -+.\"********************************************************* - .SH SCRIPTING AND ENVIRONMENTAL VARIABLES - OpenVPN exports a series - of environmental variables for use by user-defined scripts. -diff --git a/openvpn.h b/openvpn.h -index 641bf93..e5e6e58 100644 ---- a/openvpn.h -+++ b/openvpn.h -@@ -165,6 +165,9 @@ struct context_1 - /* list of --route directives */ - struct route_list *route_list; - -+ /* list of --route-ipv6 directives */ -+ struct route_ipv6_list *route_ipv6_list; -+ - /* --status file */ - struct status_output *status_output; - bool status_output_owned; -@@ -417,6 +420,11 @@ struct context_2 - in_addr_t push_ifconfig_local; - in_addr_t push_ifconfig_remote_netmask; - -+ bool push_ifconfig_ipv6_defined; -+ struct in6_addr push_ifconfig_ipv6_local; -+ int push_ifconfig_ipv6_netbits; -+ struct in6_addr push_ifconfig_ipv6_remote; -+ - /* client authentication state, CAS_SUCCEEDED must be 0 */ - # define CAS_SUCCEEDED 0 - # define CAS_PENDING 1 -diff --git a/options.c b/options.c -index 7a5e35d..8fdd8a5 100644 ---- a/options.c -+++ b/options.c -@@ -79,6 +79,7 @@ const char title_string[] = - #ifdef ENABLE_EUREPHIA - " [eurephia]" - #endif -+ " [IPv6 payload 20110522-1 (2.2.0)]" - " built on " __DATE__ - ; - -@@ -172,6 +173,8 @@ static const char usage_message[] = - " addresses outside of the subnets used by either peer.\n" - " TAP: configure device to use IP address l as a local\n" - " endpoint and rn as a subnet mask.\n" -+ "--ifconfig-ipv6 l r : configure device to use IPv6 address l as local\n" -+ " endpoint (as a /64) and r as remote endpoint\n" - "--ifconfig-noexec : Don't actually execute ifconfig/netsh command, instead\n" - " pass --ifconfig parms by environment to scripts.\n" - "--ifconfig-nowarn : Don't warn if the --ifconfig option on this side of the\n" -@@ -182,6 +185,10 @@ static const char usage_message[] = - " netmask default: 255.255.255.255\n" - " gateway default: taken from --route-gateway or --ifconfig\n" - " Specify default by leaving blank or setting to \"nil\".\n" -+ "--route-ipv6 network/bits [gateway] [metric] :\n" -+ " Add IPv6 route to routing table after connection\n" -+ " is established. Multiple routes can be specified.\n" -+ " gateway default: taken from --route-ipv6-gateway or --ifconfig\n" - "--max-routes n : Specify the maximum number of routes that may be defined\n" - " or pulled from a server.\n" - "--route-gateway gw|'dhcp' : Specify a default gateway for use with --route.\n" -@@ -370,6 +377,7 @@ static const char usage_message[] = - "\n" - "Multi-Client Server options (when --mode server is used):\n" - "--server network netmask : Helper option to easily configure server mode.\n" -+ "--server-ipv6 network/bits : Configure IPv6 server mode.\n" - "--server-bridge [IP netmask pool-start-IP pool-end-IP] : Helper option to\n" - " easily configure ethernet bridging server mode.\n" - "--push \"option\" : Push a config file option back to the peer for remote\n" -@@ -383,10 +391,16 @@ static const char usage_message[] = - "--ifconfig-pool-persist file [seconds] : Persist/unpersist ifconfig-pool\n" - " data to file, at seconds intervals (default=600).\n" - " If seconds=0, file will be treated as read-only.\n" -+ "--ifconfig-ipv6-pool base-IP/bits : set aside an IPv6 network block\n" -+ " to be dynamically allocated to connecting clients.\n" - "--ifconfig-push local remote-netmask : Push an ifconfig option to remote,\n" - " overrides --ifconfig-pool dynamic allocation.\n" - " Only valid in a client-specific config file.\n" -+ "--ifconfig-ipv6-push local/bits remote : Push an ifconfig-ipv6 option to\n" -+ " remote, overrides --ifconfig-ipv6-pool allocation.\n" -+ " Only valid in a client-specific config file.\n" - "--iroute network [netmask] : Route subnet to client.\n" -+ "--iroute-ipv6 network/bits : Route IPv6 subnet to client.\n" - " Sets up internal routes only.\n" - " Only valid in a client-specific config file.\n" - "--disable : Client is disabled.\n" -@@ -871,6 +885,78 @@ get_ip_addr (const char *ip_string, int msglevel, bool *error) - return ret; - } - -+/* helper: parse a text string containing an IPv6 address + netbits -+ * in "standard format" (2001:dba::/32) -+ * "/nn" is optional, default to /64 if missing -+ * -+ * return true if parsing succeeded, modify *network and *netbits -+ * return address part without "/nn" in *printable_ipv6 (if != NULL) -+ */ -+bool -+get_ipv6_addr( const char * prefix_str, struct in6_addr *network, -+ unsigned int * netbits, char ** printable_ipv6, int msglevel ) -+{ -+ int rc; -+ char * sep, * endp; -+ int bits; -+ struct in6_addr t_network; -+ -+ sep = strchr( prefix_str, '/' ); -+ if ( sep == NULL ) -+ { -+ bits = 64; -+ } -+ else -+ { -+ bits = strtol( sep+1, &endp, 10 ); -+ if ( *endp != '\0' || bits < 0 || bits > 128 ) -+ { -+ msg (msglevel, "IPv6 prefix '%s': invalid '/bits' spec", prefix_str); -+ return false; -+ } -+ } -+ -+ /* temporary replace '/' in caller-provided string with '\0', otherwise -+ * inet_pton() will refuse prefix string -+ * (alternative would be to strncpy() the prefix to temporary buffer) -+ */ -+ -+ if ( sep != NULL ) *sep = '\0'; -+ -+ rc = inet_pton( AF_INET6, prefix_str, &t_network ); -+ -+ if ( rc == 1 && printable_ipv6 != NULL ) -+ { -+ *printable_ipv6 = string_alloc( prefix_str, NULL ); -+ } -+ -+ if ( sep != NULL ) *sep = '/'; -+ -+ if ( rc != 1 ) -+ { -+ msg (msglevel, "IPv6 prefix '%s': invalid IPv6 address", prefix_str); -+ return false; -+ } -+ -+ if ( netbits != NULL ) -+ { -+ *netbits = bits; -+ } -+ if ( network != NULL ) -+ { -+ *network = t_network; -+ } -+ return true; /* parsing OK, values set */ -+} -+ -+static bool ipv6_addr_safe_hexplusbits( const char * ipv6_prefix_spec ) -+{ -+ struct in6_addr t_addr; -+ unsigned int t_bits; -+ -+ return get_ipv6_addr( ipv6_prefix_spec, &t_addr, &t_bits, NULL, M_WARN ); -+} -+ - static char * - string_substitute (const char *src, int from, int to, struct gc_arena *gc) - { -@@ -989,6 +1075,8 @@ show_p2mp_parms (const struct options *o) - #if P2MP_SERVER - msg (D_SHOW_PARMS, " server_network = %s", print_in_addr_t (o->server_network, 0, &gc)); - msg (D_SHOW_PARMS, " server_netmask = %s", print_in_addr_t (o->server_netmask, 0, &gc)); -+ msg (D_SHOW_PARMS, " server_network_ipv6 = %s", print_in6_addr (o->server_network_ipv6, 0, &gc) ); -+ SHOW_INT (server_netbits_ipv6); - msg (D_SHOW_PARMS, " server_bridge_ip = %s", print_in_addr_t (o->server_bridge_ip, 0, &gc)); - msg (D_SHOW_PARMS, " server_bridge_netmask = %s", print_in_addr_t (o->server_bridge_netmask, 0, &gc)); - msg (D_SHOW_PARMS, " server_bridge_pool_start = %s", print_in_addr_t (o->server_bridge_pool_start, 0, &gc)); -@@ -1009,6 +1097,9 @@ show_p2mp_parms (const struct options *o) - msg (D_SHOW_PARMS, " ifconfig_pool_netmask = %s", print_in_addr_t (o->ifconfig_pool_netmask, 0, &gc)); - SHOW_STR (ifconfig_pool_persist_filename); - SHOW_INT (ifconfig_pool_persist_refresh_freq); -+ SHOW_BOOL (ifconfig_ipv6_pool_defined); -+ msg (D_SHOW_PARMS, " ifconfig_ipv6_pool_base = %s", print_in6_addr (o->ifconfig_ipv6_pool_base, 0, &gc)); -+ SHOW_INT (ifconfig_ipv6_pool_netbits); - SHOW_INT (n_bcast_buf); - SHOW_INT (tcp_queue_limit); - SHOW_INT (real_hash_size); -@@ -1022,6 +1113,9 @@ show_p2mp_parms (const struct options *o) - SHOW_BOOL (push_ifconfig_defined); - msg (D_SHOW_PARMS, " push_ifconfig_local = %s", print_in_addr_t (o->push_ifconfig_local, 0, &gc)); - msg (D_SHOW_PARMS, " push_ifconfig_remote_netmask = %s", print_in_addr_t (o->push_ifconfig_remote_netmask, 0, &gc)); -+ SHOW_BOOL (push_ifconfig_ipv6_defined); -+ msg (D_SHOW_PARMS, " push_ifconfig_ipv6_local = %s/%d", print_in6_addr (o->push_ifconfig_ipv6_local, 0, &gc), o->push_ifconfig_ipv6_netbits ); -+ msg (D_SHOW_PARMS, " push_ifconfig_ipv6_remote = %s", print_in6_addr (o->push_ifconfig_ipv6_remote, 0, &gc)); - SHOW_BOOL (enable_c2c); - SHOW_BOOL (duplicate_cn); - SHOW_INT (cf_max); -@@ -1076,6 +1170,25 @@ option_iroute (struct options *o, - o->iroutes = ir; - } - -+static void -+option_iroute_ipv6 (struct options *o, -+ const char *prefix_str, -+ int msglevel) -+{ -+ struct iroute_ipv6 *ir; -+ -+ ALLOC_OBJ_GC (ir, struct iroute_ipv6, &o->gc); -+ -+ if ( get_ipv6_addr (prefix_str, &ir->network, &ir->netbits, NULL, msglevel ) < 0 ) -+ { -+ msg (msglevel, "in --iroute-ipv6 %s: Bad IPv6 prefix specification", -+ prefix_str); -+ return; -+ } -+ -+ ir->next = o->iroutes_ipv6; -+ o->iroutes_ipv6 = ir; -+} - #endif /* P2MP_SERVER */ - #endif /* P2MP */ - -@@ -1113,6 +1226,13 @@ rol_check_alloc (struct options *options) - options->routes = new_route_option_list (options->max_routes, &options->gc); - } - -+void -+rol6_check_alloc (struct options *options) -+{ -+ if (!options->routes_ipv6) -+ options->routes_ipv6 = new_route_ipv6_option_list (options->max_routes, &options->gc); -+} -+ - #ifdef ENABLE_DEBUG - static void - show_connection_entry (const struct connection_entry *o) -@@ -1203,6 +1323,9 @@ show_settings (const struct options *o) - SHOW_STR (ifconfig_remote_netmask); - SHOW_BOOL (ifconfig_noexec); - SHOW_BOOL (ifconfig_nowarn); -+ SHOW_STR (ifconfig_ipv6_local); -+ SHOW_INT (ifconfig_ipv6_netbits); -+ SHOW_STR (ifconfig_ipv6_remote); - - #ifdef HAVE_GETTIMEOFDAY - SHOW_INT (shaper); -@@ -1863,8 +1986,10 @@ options_postprocess_verify_ce (const struct options *options, const struct conne - if (options->connection_list) - msg (M_USAGE, "<connection> cannot be used with --mode server"); - #endif -+#if 0 - if (options->tun_ipv6) - msg (M_USAGE, "--tun-ipv6 cannot be used with --mode server"); -+#endif - if (options->shaper) - msg (M_USAGE, "--shaper cannot be used with --mode server"); - if (options->inetd) -@@ -1889,6 +2014,11 @@ options_postprocess_verify_ce (const struct options *options, const struct conne - msg (M_USAGE, "--up-delay cannot be used with --mode server"); - if (!options->ifconfig_pool_defined && options->ifconfig_pool_persist_filename) - msg (M_USAGE, "--ifconfig-pool-persist must be used with --ifconfig-pool"); -+ if (options->ifconfig_ipv6_pool_defined && !options->ifconfig_ipv6_local ) -+ msg (M_USAGE, "--ifconfig-ipv6-pool needs --ifconfig-ipv6"); -+ if (options->ifconfig_ipv6_local && !options->tun_ipv6 ) -+ msg (M_INFO, "Warning: --ifconfig-ipv6 without --tun-ipv6 will not do IPv6"); -+ - if (options->auth_user_pass_file) - msg (M_USAGE, "--auth-user-pass cannot be used with --mode server (it should be used on the client side only)"); - if (options->ccd_exclusive && !options->client_config_dir) -@@ -1920,6 +2050,8 @@ options_postprocess_verify_ce (const struct options *options, const struct conne - */ - if (options->ifconfig_pool_defined || options->ifconfig_pool_persist_filename) - msg (M_USAGE, "--ifconfig-pool/--ifconfig-pool-persist requires --mode server"); -+ if (options->ifconfig_ipv6_pool_defined) -+ msg (M_USAGE, "--ifconfig-ipv6-pool requires --mode server"); - if (options->real_hash_size != defaults.real_hash_size - || options->virtual_hash_size != defaults.virtual_hash_size) - msg (M_USAGE, "--hash-size requires --mode server"); -@@ -2461,6 +2593,8 @@ options_string (const struct options *o, - o->topology, - o->ifconfig_local, - o->ifconfig_remote_netmask, -+ o->ifconfig_ipv6_local, -+ o->ifconfig_ipv6_remote, - (in_addr_t)0, - (in_addr_t)0, - false, -@@ -3786,6 +3920,30 @@ add_option (struct options *options, - goto err; - } - } -+ else if (streq (p[0], "ifconfig-ipv6") && p[1] && p[2] ) -+ { -+ unsigned int netbits; -+ char * ipv6_local; -+ -+ VERIFY_PERMISSION (OPT_P_UP); -+ if ( get_ipv6_addr( p[1], NULL, &netbits, &ipv6_local, msglevel ) && -+ ipv6_addr_safe( p[2] ) ) -+ { -+ if ( netbits < 64 || netbits > 124 ) -+ { -+ msg( msglevel, "ifconfig-ipv6: /netbits must be between 64 and 124, not '/%d'", netbits ); -+ goto err; -+ } -+ options->ifconfig_ipv6_local = ipv6_local; -+ options->ifconfig_ipv6_netbits = netbits; -+ options->ifconfig_ipv6_remote = p[2]; -+ } -+ else -+ { -+ msg (msglevel, "ifconfig-ipv6 parms '%s' and '%s' must be valid addresses", p[1], p[2]); -+ goto err; -+ } -+ } - else if (streq (p[0], "ifconfig-noexec")) - { - VERIFY_PERMISSION (OPT_P_UP); -@@ -4586,6 +4744,26 @@ add_option (struct options *options, - } - add_route_to_option_list (options->routes, p[1], p[2], p[3], p[4]); - } -+ else if (streq (p[0], "route-ipv6") && p[1]) -+ { -+ VERIFY_PERMISSION (OPT_P_ROUTE); -+ rol6_check_alloc (options); -+ if (pull_mode) -+ { -+ if (!ipv6_addr_safe_hexplusbits (p[1])) -+ { -+ msg (msglevel, "route-ipv6 parameter network/IP '%s' must be a valid address", p[1]); -+ goto err; -+ } -+ if (p[2] && !ipv6_addr_safe (p[2])) -+ { -+ msg (msglevel, "route-ipv6 parameter gateway '%s' must be a valid address", p[2]); -+ goto err; -+ } -+ /* p[3] is metric, if present */ -+ } -+ add_route_ipv6_to_option_list (options->routes_ipv6, p[1], p[2], p[3]); -+ } - else if (streq (p[0], "max-routes") && p[1]) - { - int max_routes; -@@ -4797,6 +4975,33 @@ add_option (struct options *options, - } - } - } -+ else if (streq (p[0], "server-ipv6") && p[1] ) -+ { -+ const int lev = M_WARN; -+ struct in6_addr network; -+ unsigned int netbits = 0; -+ -+ VERIFY_PERMISSION (OPT_P_GENERAL); -+ if ( ! get_ipv6_addr (p[1], &network, &netbits, NULL, lev) ) -+ { -+ msg (msglevel, "error parsing --server-ipv6 parameter"); -+ goto err; -+ } -+ if ( netbits != 64 ) -+ { -+ msg( msglevel, "--server-ipv6 settings: only /64 supported right now (not /%d)", netbits ); -+ goto err; -+ } -+ options->server_ipv6_defined = true; -+ options->server_network_ipv6 = network; -+ options->server_netbits_ipv6 = netbits; -+ -+ if (p[2]) /* no "nopool" options or similar for IPv6 */ -+ { -+ msg (msglevel, "error parsing --server-ipv6: %s is not a recognized flag", p[3]); -+ goto err; -+ } -+ } - else if (streq (p[0], "server-bridge") && p[1] && p[2] && p[3] && p[4]) - { - const int lev = M_WARN; -@@ -4881,6 +5086,28 @@ add_option (struct options *options, - VERIFY_PERMISSION (OPT_P_GENERAL); - options->topology = TOP_P2P; - } -+ else if (streq (p[0], "ifconfig-ipv6-pool") && p[1] ) -+ { -+ const int lev = M_WARN; -+ struct in6_addr network; -+ unsigned int netbits = 0; -+ -+ VERIFY_PERMISSION (OPT_P_GENERAL); -+ if ( ! get_ipv6_addr (p[1], &network, &netbits, NULL, lev ) ) -+ { -+ msg (msglevel, "error parsing --ifconfig-ipv6-pool parameters"); -+ goto err; -+ } -+ if ( netbits != 64 ) -+ { -+ msg( msglevel, "--ifconfig-ipv6-pool settings: only /64 supported right now (not /%d)", netbits ); -+ goto err; -+ } -+ -+ options->ifconfig_ipv6_pool_defined = true; -+ options->ifconfig_ipv6_pool_base = network; -+ options->ifconfig_ipv6_pool_netbits = netbits; -+ } - else if (streq (p[0], "hash-size") && p[1] && p[2]) - { - int real, virtual; -@@ -5076,6 +5303,11 @@ add_option (struct options *options, - } - option_iroute (options, p[1], netmask, msglevel); - } -+ else if (streq (p[0], "iroute-ipv6") && p[1]) -+ { -+ VERIFY_PERMISSION (OPT_P_INSTANCE); -+ option_iroute_ipv6 (options, p[1], msglevel); -+ } - else if (streq (p[0], "ifconfig-push") && p[1] && p[2]) - { - in_addr_t local, remote_netmask; -@@ -5114,6 +5346,43 @@ add_option (struct options *options, - goto err; - } - } -+ else if (streq (p[0], "ifconfig-ipv6-push") && p[1] ) -+ { -+ struct in6_addr local, remote; -+ unsigned int netbits; -+ -+ VERIFY_PERMISSION (OPT_P_INSTANCE); -+ -+ if ( ! get_ipv6_addr( p[1], &local, &netbits, NULL, msglevel ) ) -+ { -+ msg (msglevel, "cannot parse --ifconfig-ipv6-push addresses"); -+ goto err; -+ } -+ -+ if ( p[2] ) -+ { -+ if ( !get_ipv6_addr( p[2], &remote, NULL, NULL, msglevel ) ) -+ { -+ msg( msglevel, "cannot parse --ifconfig-ipv6-push addresses"); -+ goto err; -+ } -+ } -+ else -+ { -+ if ( ! options->ifconfig_ipv6_local || -+ ! get_ipv6_addr( options->ifconfig_ipv6_local, &remote, -+ NULL, NULL, msglevel ) ) -+ { -+ msg( msglevel, "second argument to --ifconfig-ipv6-push missing and no global --ifconfig-ipv6 address set"); -+ goto err; -+ } -+ } -+ -+ options->push_ifconfig_ipv6_defined = true; -+ options->push_ifconfig_ipv6_local = local; -+ options->push_ifconfig_ipv6_netbits = netbits; -+ options->push_ifconfig_ipv6_remote = remote; -+ } - else if (streq (p[0], "disable")) - { - VERIFY_PERMISSION (OPT_P_INSTANCE); -diff --git a/options.h b/options.h -index dd49355..3b01597 100644 ---- a/options.h -+++ b/options.h -@@ -205,6 +205,9 @@ struct options - int topology; /* one of the TOP_x values from proto.h */ - const char *ifconfig_local; - const char *ifconfig_remote_netmask; -+ const char *ifconfig_ipv6_local; -+ int ifconfig_ipv6_netbits; -+ const char *ifconfig_ipv6_remote; - bool ifconfig_noexec; - bool ifconfig_nowarn; - #ifdef HAVE_GETTIMEOFDAY -@@ -326,6 +329,7 @@ struct options - bool route_delay_defined; - int max_routes; - struct route_option_list *routes; -+ struct route_ipv6_option_list *routes_ipv6; /* IPv6 */ - bool route_nopull; - bool route_gateway_via_dhcp; - bool allow_pull_fqdn; /* as a client, allow server to push a FQDN for certain parameters */ -@@ -363,6 +367,9 @@ struct options - bool server_defined; - in_addr_t server_network; - in_addr_t server_netmask; -+ bool server_ipv6_defined; /* IPv6 */ -+ struct in6_addr server_network_ipv6; /* IPv6 */ -+ unsigned int server_netbits_ipv6; /* IPv6 */ - - # define SF_NOPOOL (1<<0) - # define SF_TCP_NODELAY_HELPER (1<<1) -@@ -384,6 +391,11 @@ struct options - in_addr_t ifconfig_pool_netmask; - const char *ifconfig_pool_persist_filename; - int ifconfig_pool_persist_refresh_freq; -+ -+ bool ifconfig_ipv6_pool_defined; /* IPv6 */ -+ struct in6_addr ifconfig_ipv6_pool_base; /* IPv6 */ -+ int ifconfig_ipv6_pool_netbits; /* IPv6 */ -+ - int real_hash_size; - int virtual_hash_size; - const char *client_connect_script; -@@ -395,12 +407,17 @@ struct options - int n_bcast_buf; - int tcp_queue_limit; - struct iroute *iroutes; -+ struct iroute_ipv6 *iroutes_ipv6; /* IPv6 */ - bool push_ifconfig_defined; - in_addr_t push_ifconfig_local; - in_addr_t push_ifconfig_remote_netmask; - bool push_ifconfig_constraint_defined; - in_addr_t push_ifconfig_constraint_network; - in_addr_t push_ifconfig_constraint_netmask; -+ bool push_ifconfig_ipv6_defined; /* IPv6 */ -+ struct in6_addr push_ifconfig_ipv6_local; /* IPv6 */ -+ int push_ifconfig_ipv6_netbits; /* IPv6 */ -+ struct in6_addr push_ifconfig_ipv6_remote; /* IPv6 */ - bool enable_c2c; - bool duplicate_cn; - int cf_max; -@@ -723,6 +740,10 @@ void options_string_import (struct options *options, - unsigned int *option_types_found, - struct env_set *es); - -+bool get_ipv6_addr( const char * prefix_str, struct in6_addr *network, -+ unsigned int * netbits, char ** printable_ipv6, -+ int msglevel ); -+ - /* - * inline functions - */ -diff --git a/pool.c b/pool.c -index 84333df..60dc520 100644 ---- a/pool.c -+++ b/pool.c -@@ -132,7 +132,10 @@ ifconfig_pool_verify_range (const int msglevel, const in_addr_t start, const in_ - } - - struct ifconfig_pool * --ifconfig_pool_init (int type, in_addr_t start, in_addr_t end, const bool duplicate_cn) -+ifconfig_pool_init (int type, in_addr_t start, in_addr_t end, -+ const bool duplicate_cn, -+ const bool ipv6_pool, const struct in6_addr ipv6_base, -+ const int ipv6_netbits ) - { - struct gc_arena gc = gc_new (); - struct ifconfig_pool *pool = NULL; -@@ -157,11 +160,31 @@ ifconfig_pool_init (int type, in_addr_t start, in_addr_t end, const bool duplica - ASSERT (0); - } - -+ /* IPv6 pools are always "INDIV" type */ -+ pool->ipv6 = ipv6_pool; -+ -+ if ( pool->ipv6 ) -+ { -+ pool->base_ipv6 = ipv6_base; -+ pool->size_ipv6 = ipv6_netbits>96? ( 1<<(128-ipv6_netbits) ) -+ : IFCONFIG_POOL_MAX; -+ -+ msg( D_IFCONFIG_POOL, "IFCONFIG POOL IPv6: (IPv4) size=%d, size_ipv6=%d, netbits=%d, base_ipv6=%s", -+ pool->size, pool->size_ipv6, ipv6_netbits, -+ print_in6_addr( pool->base_ipv6, 0, &gc )); -+ -+ /* the current code is very simple and assumes that the IPv6 -+ * pool is at least as big as the IPv4 pool, and we don't need -+ * to do separate math etc. for IPv6 -+ */ -+ ASSERT( pool->size < pool->size_ipv6 ); -+ } -+ - ALLOC_ARRAY_CLEAR (pool->list, struct ifconfig_pool_entry, pool->size); - -- msg (D_IFCONFIG_POOL, "IFCONFIG POOL: base=%s size=%d", -+ msg (D_IFCONFIG_POOL, "IFCONFIG POOL: base=%s size=%d, ipv6=%d", - print_in_addr_t (pool->base, 0, &gc), -- pool->size); -+ pool->size, pool->ipv6 ); - - gc_free (&gc); - return pool; -@@ -181,7 +204,7 @@ ifconfig_pool_free (struct ifconfig_pool *pool) - } - - ifconfig_pool_handle --ifconfig_pool_acquire (struct ifconfig_pool *pool, in_addr_t *local, in_addr_t *remote, const char *common_name) -+ifconfig_pool_acquire (struct ifconfig_pool *pool, in_addr_t *local, in_addr_t *remote, struct in6_addr *remote_ipv6, const char *common_name) - { - int i; - -@@ -214,6 +237,12 @@ ifconfig_pool_acquire (struct ifconfig_pool *pool, in_addr_t *local, in_addr_t * - default: - ASSERT (0); - } -+ -+ /* IPv6 pools are always INDIV (--linear) */ -+ if ( pool->ipv6 && remote_ipv6 ) -+ { -+ *remote_ipv6 = add_in6_addr( pool->base_ipv6, i ); -+ } - } - return i; - } -@@ -288,6 +317,19 @@ ifconfig_pool_handle_to_ip_base (const struct ifconfig_pool* pool, ifconfig_pool - return ret; - } - -+static struct in6_addr -+ifconfig_pool_handle_to_ipv6_base (const struct ifconfig_pool* pool, ifconfig_pool_handle hand) -+{ -+ struct in6_addr ret = in6addr_any; -+ -+ /* IPv6 pools are always INDIV (--linear) */ -+ if (hand >= 0 && hand < pool->size_ipv6 ) -+ { -+ ret = add_in6_addr( pool->base_ipv6, hand ); -+ } -+ return ret; -+} -+ - static void - ifconfig_pool_set (struct ifconfig_pool* pool, const char *cn, const in_addr_t addr, const bool fixed) - { -@@ -317,9 +359,20 @@ ifconfig_pool_list (const struct ifconfig_pool* pool, struct status_output *out) - if (e->common_name) - { - const in_addr_t ip = ifconfig_pool_handle_to_ip_base (pool, i); -- status_printf (out, "%s,%s", -- e->common_name, -- print_in_addr_t (ip, 0, &gc)); -+ if ( pool->ipv6 ) -+ { -+ struct in6_addr ip6 = ifconfig_pool_handle_to_ipv6_base (pool, i); -+ status_printf (out, "%s,%s,%s", -+ e->common_name, -+ print_in_addr_t (ip, 0, &gc), -+ print_in6_addr (ip6, 0, &gc)); -+ } -+ else -+ { -+ status_printf (out, "%s,%s", -+ e->common_name, -+ print_in_addr_t (ip, 0, &gc)); -+ } - } - } - gc_free (&gc); -@@ -409,6 +462,9 @@ ifconfig_pool_read (struct ifconfig_pool_persist *persist, struct ifconfig_pool - int c = *BSTR(&in); - if (c == '#' || c == ';') - continue; -+ msg( M_INFO, "ifconfig_pool_read(), in='%s', TODO: IPv6", -+ BSTR(&in) ); -+ - if (buf_parse (&in, ',', cn_buf, buf_size) - && buf_parse (&in, ',', ip_buf, buf_size)) - { -@@ -416,6 +472,7 @@ ifconfig_pool_read (struct ifconfig_pool_persist *persist, struct ifconfig_pool - const in_addr_t addr = getaddr (GETADDR_HOST_ORDER, ip_buf, 0, &succeeded, NULL); - if (succeeded) - { -+ msg( M_INFO, "succeeded -> ifconfig_pool_set()"); - ifconfig_pool_set (pool, cn_buf, addr, persist->fixed); - } - } -@@ -471,7 +528,7 @@ ifconfig_pool_test (in_addr_t start, in_addr_t end) - #else - cn = buf; - #endif -- h = ifconfig_pool_acquire (p, &local, &remote, cn); -+ h = ifconfig_pool_acquire (p, &local, &remote, NULL, cn); - if (h < 0) - break; - msg (M_INFO | M_NOPREFIX, "IFCONFIG_POOL TEST pass 1: l=%s r=%s cn=%s", -@@ -506,7 +563,7 @@ ifconfig_pool_test (in_addr_t start, in_addr_t end) - #else - cn = buf; - #endif -- h = ifconfig_pool_acquire (p, &local, &remote, cn); -+ h = ifconfig_pool_acquire (p, &local, &remote, NULL, cn); - if (h < 0) - break; - msg (M_INFO | M_NOPREFIX, "IFCONFIG_POOL TEST pass 3: l=%s r=%s cn=%s", -diff --git a/pool.h b/pool.h -index 81264a9..fc9d6ab 100644 ---- a/pool.h -+++ b/pool.h -@@ -52,6 +52,9 @@ struct ifconfig_pool - int size; - int type; - bool duplicate_cn; -+ bool ipv6; -+ struct in6_addr base_ipv6; -+ unsigned int size_ipv6; - struct ifconfig_pool_entry *list; - }; - -@@ -63,13 +66,13 @@ struct ifconfig_pool_persist - - typedef int ifconfig_pool_handle; - --struct ifconfig_pool *ifconfig_pool_init (int type, in_addr_t start, in_addr_t end, const bool duplicate_cn); -+struct ifconfig_pool *ifconfig_pool_init (int type, in_addr_t start, in_addr_t end, const bool duplicate_cn, const bool ipv6_pool, const struct in6_addr ipv6_base, const int ipv6_netbits ); - - void ifconfig_pool_free (struct ifconfig_pool *pool); - - bool ifconfig_pool_verify_range (const int msglevel, const in_addr_t start, const in_addr_t end); - --ifconfig_pool_handle ifconfig_pool_acquire (struct ifconfig_pool *pool, in_addr_t *local, in_addr_t *remote, const char *common_name); -+ifconfig_pool_handle ifconfig_pool_acquire (struct ifconfig_pool *pool, in_addr_t *local, in_addr_t *remote, struct in6_addr *remote_ipv6, const char *common_name); - - bool ifconfig_pool_release (struct ifconfig_pool* pool, ifconfig_pool_handle hand, const bool hard); - -diff --git a/proto.h b/proto.h -index 55f0832..b8e8997 100644 ---- a/proto.h -+++ b/proto.h -@@ -108,6 +108,21 @@ struct openvpn_iphdr { - }; - - /* -+ * IPv6 header -+ */ -+struct openvpn_ipv6hdr { -+ uint8_t version_prio; -+ uint8_t flow_lbl[3]; -+ uint16_t payload_len; -+ uint8_t nexthdr; -+ uint8_t hop_limit; -+ -+ struct in6_addr saddr; -+ struct in6_addr daddr; -+}; -+ -+ -+/* - * UDP header - */ - struct openvpn_udphdr { -diff --git a/push.c b/push.c -index 08c7f99..1fd8bea 100644 ---- a/push.c -+++ b/push.c -@@ -189,8 +189,26 @@ send_push_reply (struct context *c) - const int safe_cap = BCAP (&buf) - extra; - bool push_sent = false; - -+ msg( M_INFO, "send_push_reply(): safe_cap=%d", safe_cap ); -+ - buf_printf (&buf, "%s", cmd); - -+ if ( c->c2.push_ifconfig_ipv6_defined ) -+ { -+ /* IPv6 is put into buffer first, could be lengthy */ -+ /* TODO: push "/netbits" as well, to allow non-/64 subnet sizes -+ * (needs changes in options.c, options.h, and other places) -+ */ -+ buf_printf( &buf, ",ifconfig-ipv6 %s %s", -+ print_in6_addr( c->c2.push_ifconfig_ipv6_local, 0, &gc), -+ print_in6_addr( c->c2.push_ifconfig_ipv6_remote, 0, &gc) ); -+ if (BLEN (&buf) >= safe_cap) -+ { -+ msg (M_WARN, "--push ifconfig-ipv6 option is too long"); -+ goto fail; -+ } -+ } -+ - while (e) - { - if (e->enable) -diff --git a/route.c b/route.c -index b5092fe..7c81f75 100644 ---- a/route.c -+++ b/route.c -@@ -35,6 +35,7 @@ - #include "socket.h" - #include "manage.h" - #include "win32.h" -+#include "options.h" - - #include "memdbg.h" - -@@ -68,6 +69,15 @@ new_route_option_list (const int max_routes, struct gc_arena *a) - return ret; - } - -+struct route_ipv6_option_list * -+new_route_ipv6_option_list (const int max_routes, struct gc_arena *a) -+{ -+ struct route_ipv6_option_list *ret; -+ ALLOC_VAR_ARRAY_CLEAR_GC (ret, struct route_ipv6_option_list, struct route_ipv6_option, max_routes, a); -+ ret->capacity = max_routes; -+ return ret; -+} -+ - struct route_option_list * - clone_route_option_list (const struct route_option_list *src, struct gc_arena *a) - { -@@ -95,6 +105,15 @@ new_route_list (const int max_routes, struct gc_arena *a) - return ret; - } - -+struct route_ipv6_list * -+new_route_ipv6_list (const int max_routes, struct gc_arena *a) -+{ -+ struct route_ipv6_list *ret; -+ ALLOC_VAR_ARRAY_CLEAR_GC (ret, struct route_ipv6_list, struct route_ipv6, max_routes, a); -+ ret->capacity = max_routes; -+ return ret; -+} -+ - static const char * - route_string (const struct route *r, struct gc_arena *gc) - { -@@ -311,6 +330,68 @@ init_route (struct route *r, - return false; - } - -+static bool -+init_route_ipv6 (struct route_ipv6 *r6, -+ const struct route_ipv6_option *r6o, -+ const struct route_ipv6_list *rl6 ) -+{ -+ r6->option = r6o; -+ r6->defined = false; -+ -+ if ( !get_ipv6_addr( r6o->prefix, &r6->network, &r6->netbits, NULL, M_WARN )) -+ goto fail; -+ -+ /* gateway */ -+ if (is_route_parm_defined (r6o->gateway)) -+ { -+ if ( inet_pton( AF_INET6, r6o->gateway, &r6->gateway ) != 1 ) -+ { -+ msg( M_WARN, PACKAGE_NAME "ROUTE6: cannot parse gateway spec '%s'", r6o->gateway ); -+ } -+ } -+ else if (rl6->remote_endpoint_defined) -+ { -+ r6->gateway = rl6->remote_endpoint_ipv6; -+ } -+ else -+ { -+ msg (M_WARN, PACKAGE_NAME " ROUTE6: " PACKAGE_NAME " needs a gateway parameter for a --route-ipv6 option and no default was specified by either --route-ipv6-gateway or --ifconfig-ipv6 options"); -+ goto fail; -+ } -+ -+ /* metric */ -+ -+ r6->metric_defined = false; -+ r6->metric = 0; -+ if (is_route_parm_defined (r6o->metric)) -+ { -+ r6->metric = atoi (r6o->metric); -+ if (r6->metric < 0) -+ { -+ msg (M_WARN, PACKAGE_NAME " ROUTE: route metric for network %s (%s) must be >= 0", -+ r6o->prefix, -+ r6o->metric); -+ goto fail; -+ } -+ r6->metric_defined = true; -+ } -+ else if (rl6->default_metric_defined) -+ { -+ r6->metric = rl6->default_metric; -+ r6->metric_defined = true; -+ } -+ -+ r6->defined = true; -+ -+ return true; -+ -+ fail: -+ msg (M_WARN, PACKAGE_NAME " ROUTE: failed to parse/resolve route for host/network: %s", -+ r6o->prefix); -+ r6->defined = false; -+ return false; -+} -+ - void - add_route_to_option_list (struct route_option_list *l, - const char *network, -@@ -331,6 +412,23 @@ add_route_to_option_list (struct route_option_list *l, - } - - void -+add_route_ipv6_to_option_list (struct route_ipv6_option_list *l, -+ const char *prefix, -+ const char *gateway, -+ const char *metric) -+{ -+ struct route_ipv6_option *ro; -+ if (l->n >= l->capacity) -+ msg (M_FATAL, PACKAGE_NAME " ROUTE: cannot add more than %d IPv6 routes -- please increase the max-routes option in the client configuration file", -+ l->capacity); -+ ro = &l->routes_ipv6[l->n]; -+ ro->prefix = prefix; -+ ro->gateway = gateway; -+ ro->metric = metric; -+ ++l->n; -+} -+ -+void - clear_route_list (struct route_list *rl) - { - const int capacity = rl->capacity; -@@ -340,6 +438,15 @@ clear_route_list (struct route_list *rl) - } - - void -+clear_route_ipv6_list (struct route_ipv6_list *rl6) -+{ -+ const int capacity = rl6->capacity; -+ const size_t rl6_size = array_mult_safe (sizeof(struct route_ipv6), capacity, sizeof(struct route_ipv6_list)); -+ memset(rl6, 0, rl6_size); -+ rl6->capacity = capacity; -+} -+ -+void - route_list_add_default_gateway (struct route_list *rl, - struct env_set *es, - const in_addr_t addr) -@@ -469,6 +576,72 @@ init_route_list (struct route_list *rl, - return ret; - } - -+bool -+init_route_ipv6_list (struct route_ipv6_list *rl6, -+ const struct route_ipv6_option_list *opt6, -+ const char *remote_endpoint, -+ int default_metric, -+ struct env_set *es) -+{ -+ struct gc_arena gc = gc_new (); -+ bool ret = true; -+ -+ clear_route_ipv6_list (rl6); -+ -+ rl6->flags = opt6->flags; -+ -+ if (default_metric) -+ { -+ rl6->default_metric = default_metric; -+ rl6->default_metric_defined = true; -+ } -+ -+ /* "default_gateway" is stuff for "redirect-gateway", which we don't -+ * do for IPv6 yet -> TODO -+ */ -+ { -+ dmsg (D_ROUTE, "ROUTE6: default_gateway=UNDEF"); -+ } -+ -+ if ( is_route_parm_defined( remote_endpoint )) -+ { -+ if ( inet_pton( AF_INET6, remote_endpoint, -+ &rl6->remote_endpoint_ipv6) == 1 ) -+ { -+ rl6->remote_endpoint_defined = true; -+ } -+ else -+ { -+ msg (M_WARN, PACKAGE_NAME " ROUTE: failed to parse/resolve default gateway: %s", remote_endpoint); -+ ret = false; -+ } -+ } -+ else -+ rl6->remote_endpoint_defined = false; -+ -+ -+ if (!(opt6->n >= 0 && opt6->n <= rl6->capacity)) -+ msg (M_FATAL, PACKAGE_NAME " ROUTE6: (init) number of route options (%d) is greater than route list capacity (%d)", opt6->n, rl6->capacity); -+ -+ /* parse the routes from opt to rl6 */ -+ { -+ int i, j = 0; -+ for (i = 0; i < opt6->n; ++i) -+ { -+ if (!init_route_ipv6 (&rl6->routes_ipv6[j], -+ &opt6->routes_ipv6[i], -+ rl6 )) -+ ret = false; -+ else -+ ++j; -+ } -+ rl6->n = j; -+ } -+ -+ gc_free (&gc); -+ return ret; -+} -+ - static void - add_route3 (in_addr_t network, - in_addr_t netmask, -@@ -704,10 +877,13 @@ undo_redirect_default_route_to_vpn (struct route_list *rl, const struct tuntap * - } - - void --add_routes (struct route_list *rl, const struct tuntap *tt, unsigned int flags, const struct env_set *es) -+add_routes (struct route_list *rl, struct route_ipv6_list *rl6, -+ const struct tuntap *tt, unsigned int flags, const struct env_set *es) - { -- redirect_default_route_to_vpn (rl, tt, flags, es); -- if (!rl->routes_added) -+ if (rl) -+ redirect_default_route_to_vpn (rl, tt, flags, es); -+ -+ if (rl && !rl->routes_added) - { - int i; - -@@ -732,12 +908,27 @@ add_routes (struct route_list *rl, const struct tuntap *tt, unsigned int flags, - } - rl->routes_added = true; - } -+ -+ if (rl6 && !rl6->routes_added) -+ { -+ int i; -+ -+ for (i = 0; i < rl6->n; ++i) -+ { -+ struct route_ipv6 *r = &rl6->routes_ipv6[i]; -+ if (flags & ROUTE_DELETE_FIRST) -+ delete_route_ipv6 (r, tt, flags, es); -+ add_route_ipv6 (r, tt, flags, es); -+ } -+ rl6->routes_added = true; -+ } - } - - void --delete_routes (struct route_list *rl, const struct tuntap *tt, unsigned int flags, const struct env_set *es) -+delete_routes (struct route_list *rl, struct route_ipv6_list *rl6, -+ const struct tuntap *tt, unsigned int flags, const struct env_set *es) - { -- if (rl->routes_added) -+ if (rl && rl->routes_added) - { - int i; - for (i = rl->n - 1; i >= 0; --i) -@@ -747,9 +938,28 @@ delete_routes (struct route_list *rl, const struct tuntap *tt, unsigned int flag - } - rl->routes_added = false; - } -- undo_redirect_default_route_to_vpn (rl, tt, flags, es); - -- clear_route_list (rl); -+ if ( rl ) -+ { -+ undo_redirect_default_route_to_vpn (rl, tt, flags, es); -+ clear_route_list (rl); -+ } -+ -+ if ( rl6 && rl6->routes_added ) -+ { -+ int i; -+ for (i = rl6->n - 1; i >= 0; --i) -+ { -+ const struct route_ipv6 *r6 = &rl6->routes_ipv6[i]; -+ delete_route_ipv6 (r6, tt, flags, es); -+ } -+ rl6->routes_added = false; -+ } -+ -+ if ( rl6 ) -+ { -+ clear_route_ipv6_list (rl6); -+ } - } - - #ifdef ENABLE_DEBUG -@@ -832,6 +1042,34 @@ setenv_routes (struct env_set *es, const struct route_list *rl) - setenv_route (es, &rl->routes[i], i + 1); - } - -+static void -+setenv_route_ipv6 (struct env_set *es, const struct route_ipv6 *r6, int i) -+{ -+ struct gc_arena gc = gc_new (); -+ if (r6->defined) -+ { -+ struct buffer name1 = alloc_buf_gc( 256, &gc ); -+ struct buffer val = alloc_buf_gc( 256, &gc ); -+ struct buffer name2 = alloc_buf_gc( 256, &gc ); -+ -+ buf_printf( &name1, "route_ipv6_network_%d", i ); -+ buf_printf( &val, "%s/%d", print_in6_addr( r6->network, 0, &gc ), -+ r6->netbits ); -+ setenv_str( es, BSTR(&name1), BSTR(&val) ); -+ -+ buf_printf( &name2, "route_ipv6_gateway_%d", i ); -+ setenv_str( es, BSTR(&name2), print_in6_addr( r6->gateway, 0, &gc )); -+ } -+ gc_free (&gc); -+} -+void -+setenv_routes_ipv6 (struct env_set *es, const struct route_ipv6_list *rl6) -+{ -+ int i; -+ for (i = 0; i < rl6->n; ++i) -+ setenv_route_ipv6 (es, &rl6->routes_ipv6[i], i + 1); -+} -+ - void - add_route (struct route *r, const struct tuntap *tt, unsigned int flags, const struct env_set *es) - { -@@ -1025,6 +1263,187 @@ add_route (struct route *r, const struct tuntap *tt, unsigned int flags, const s - gc_free (&gc); - } - -+ -+static const char * -+print_in6_addr_netbits_only( struct in6_addr network_copy, int netbits, -+ struct gc_arena * gc) -+{ -+ /* clear host bit parts of route -+ * (needed if routes are specified improperly, or if we need to -+ * explicitely setup/clear the "connected" network routes on some OSes) -+ */ -+ int byte = 15; -+ int bits_to_clear = 128 - netbits; -+ -+ while( byte >= 0 && bits_to_clear > 0 ) -+ { -+ if ( bits_to_clear >= 8 ) -+ { network_copy.s6_addr[byte--] = 0; bits_to_clear -= 8; } -+ else -+ { network_copy.s6_addr[byte--] &= (~0 << bits_to_clear); bits_to_clear = 0; } -+ } -+ -+ return print_in6_addr( network_copy, 0, gc); -+} -+ -+void -+add_route_ipv6 (struct route_ipv6 *r6, const struct tuntap *tt, unsigned int flags, const struct env_set *es) -+{ -+ struct gc_arena gc; -+ struct argv argv; -+ -+ const char *network; -+ const char *gateway; -+ bool status = false; -+ const char *device = tt->actual_name; -+ -+ if (!r6->defined) -+ return; -+ -+ gc_init (&gc); -+ argv_init (&argv); -+ -+ network = print_in6_addr_netbits_only( r6->network, r6->netbits, &gc); -+ gateway = print_in6_addr( r6->gateway, 0, &gc); -+ -+ if ( !tt->ipv6 ) -+ { -+ msg( M_INFO, "add_route_ipv6(): not adding %s/%d, no IPv6 on if %s", -+ network, r6->netbits, device ); -+ return; -+ } -+ -+ msg( M_INFO, "add_route_ipv6(%s/%d -> %s metric %d) dev %s", -+ network, r6->netbits, gateway, r6->metric, device ); -+ -+ /* -+ * Filter out routes which are essentially no-ops -+ * (not currently done for IPv6) -+ */ -+ -+#if defined(TARGET_LINUX) -+#ifdef CONFIG_FEATURE_IPROUTE -+ argv_printf (&argv, "%s -6 route add %s/%d dev %s", -+ iproute_path, -+ network, -+ r6->netbits, -+ device); -+ if (r6->metric_defined) -+ argv_printf_cat (&argv, " metric %d", r6->metric); -+ -+#else -+ argv_printf (&argv, "%s -A inet6 add %s/%d dev %s", -+ ROUTE_PATH, -+ network, -+ r6->netbits, -+ device); -+ if (r6->metric_defined) -+ argv_printf_cat (&argv, " metric %d", r6->metric); -+#endif /*CONFIG_FEATURE_IPROUTE*/ -+ argv_msg (D_ROUTE, &argv); -+ status = openvpn_execve_check (&argv, es, 0, "ERROR: Linux route -6/-A inet6 add command failed"); -+ -+#elif defined (WIN32) -+ -+ /* netsh interface ipv6 add route 2001:db8::/32 MyTunDevice */ -+ argv_printf (&argv, "%s%sc interface ipv6 add route %s/%d %s", -+ get_win_sys_path(), -+ NETSH_PATH_SUFFIX, -+ network, -+ r6->netbits, -+ device); -+ -+ /* next-hop depends on TUN or TAP mode: -+ * - in TAP mode, we use the "real" next-hop -+ * - in TUN mode we use a special-case link-local address that the tapdrvr -+ * knows about and will answer ND (neighbor discovery) packets for -+ */ -+ if ( tt->type == DEV_TYPE_TUN ) -+ argv_printf_cat( &argv, " %s", "fe80::8" ); -+ else -+ argv_printf_cat( &argv, " %s", gateway ); -+ -+#if 0 -+ if (r->metric_defined) -+ argv_printf_cat (&argv, " METRIC %d", r->metric); -+#endif -+ -+ /* in some versions of Windows, routes are persistent across reboots by -+ * default, unless "store=active" is set (pointed out by Tony Lim, thanks) -+ */ -+ argv_printf_cat( &argv, " store=active" ); -+ -+ argv_msg (D_ROUTE, &argv); -+ -+ netcmd_semaphore_lock (); -+ status = openvpn_execve_check (&argv, es, 0, "ERROR: Windows route add ipv6 command failed"); -+ netcmd_semaphore_release (); -+ -+#elif defined (TARGET_SOLARIS) -+ -+ /* example: route add -inet6 2001:db8::/32 somegateway 0 */ -+ -+ /* for some weird reason, this does not work for me unless I set -+ * "metric 0" - otherwise, the routes will be nicely installed, but -+ * packets will just disappear somewhere. So we use "0" now... -+ */ -+ -+ argv_printf (&argv, "%s add -inet6 %s/%d %s 0", -+ ROUTE_PATH, -+ network, -+ r6->netbits, -+ gateway ); -+ -+ argv_msg (D_ROUTE, &argv); -+ status = openvpn_execve_check (&argv, es, 0, "ERROR: Solaris route add -inet6 command failed"); -+ -+#elif defined(TARGET_FREEBSD) || defined(TARGET_DRAGONFLY) -+ -+ argv_printf (&argv, "%s add -inet6 %s/%d -iface %s", -+ ROUTE_PATH, -+ network, -+ r6->netbits, -+ device ); -+ -+ argv_msg (D_ROUTE, &argv); -+ status = openvpn_execve_check (&argv, es, 0, "ERROR: *BSD route add -inet6 command failed"); -+ -+#elif defined(TARGET_DARWIN) -+ -+ argv_printf (&argv, "%s add -inet6 %s -prefixlen %d -iface %s", -+ ROUTE_PATH, -+ network, r6->netbits, device ); -+ -+ argv_msg (D_ROUTE, &argv); -+ status = openvpn_execve_check (&argv, es, 0, "ERROR: MacOS X route add -inet6 command failed"); -+ -+#elif defined(TARGET_OPENBSD) -+ -+ argv_printf (&argv, "%s add -inet6 %s -prefixlen %d %s", -+ ROUTE_PATH, -+ network, r6->netbits, gateway ); -+ -+ argv_msg (D_ROUTE, &argv); -+ status = openvpn_execve_check (&argv, es, 0, "ERROR: OpenBSD route add -inet6 command failed"); -+ -+#elif defined(TARGET_NETBSD) -+ -+ argv_printf (&argv, "%s add -inet6 %s/%d %s", -+ ROUTE_PATH, -+ network, r6->netbits, gateway ); -+ -+ argv_msg (D_ROUTE, &argv); -+ status = openvpn_execve_check (&argv, es, 0, "ERROR: NetBSD route add -inet6 command failed"); -+ -+#else -+ msg (M_FATAL, "Sorry, but I don't know how to do 'route ipv6' commands on this operating system. Try putting your routes in a --route-up script"); -+#endif -+ -+ r6->defined = status; -+ argv_reset (&argv); -+ gc_free (&gc); -+} -+ - static void - delete_route (const struct route *r, const struct tuntap *tt, unsigned int flags, const struct env_set *es) - { -@@ -1164,6 +1583,142 @@ delete_route (const struct route *r, const struct tuntap *tt, unsigned int flags - gc_free (&gc); - } - -+void -+delete_route_ipv6 (const struct route_ipv6 *r6, const struct tuntap *tt, unsigned int flags, const struct env_set *es) -+{ -+ struct gc_arena gc; -+ struct argv argv; -+ const char *network; -+ const char *gateway; -+ const char *device = tt->actual_name; -+ -+ if (!r6->defined) -+ return; -+ -+ gc_init (&gc); -+ argv_init (&argv); -+ -+ network = print_in6_addr_netbits_only( r6->network, r6->netbits, &gc); -+ gateway = print_in6_addr( r6->gateway, 0, &gc); -+ -+ if ( !tt->ipv6 ) -+ { -+ msg( M_INFO, "delete_route_ipv6(): not deleting %s/%d, no IPv6 on if %s", -+ network, r6->netbits, device ); -+ return; -+ } -+ -+ msg( M_INFO, "delete_route_ipv6(%s/%d)", network, r6->netbits ); -+ -+#if defined(TARGET_LINUX) -+#ifdef CONFIG_FEATURE_IPROUTE -+ argv_printf (&argv, "%s -6 route del %s/%d dev %s", -+ iproute_path, -+ network, -+ r6->netbits, -+ device); -+#else -+ argv_printf (&argv, "%s -A inet6 del %s/%d dev %s", -+ ROUTE_PATH, -+ network, -+ r6->netbits, -+ device); -+#endif /*CONFIG_FEATURE_IPROUTE*/ -+ argv_msg (D_ROUTE, &argv); -+ openvpn_execve_check (&argv, es, 0, "ERROR: Linux route -6/-A inet6 del command failed"); -+ -+#elif defined (WIN32) -+ -+ /* netsh interface ipv6 delete route 2001:db8::/32 MyTunDevice */ -+ argv_printf (&argv, "%s%sc interface ipv6 delete route %s/%d %s", -+ get_win_sys_path(), -+ NETSH_PATH_SUFFIX, -+ network, -+ r6->netbits, -+ device); -+ -+ /* next-hop depends on TUN or TAP mode: -+ * - in TAP mode, we use the "real" next-hop -+ * - in TUN mode we use a special-case link-local address that the tapdrvr -+ * knows about and will answer ND (neighbor discovery) packets for -+ * (and "route deletion without specifying next-hop" does not work...) -+ */ -+ if ( tt->type == DEV_TYPE_TUN ) -+ argv_printf_cat( &argv, " %s", "fe80::8" ); -+ else -+ argv_printf_cat( &argv, " %s", gateway ); -+ -+#if 0 -+ if (r->metric_defined) -+ argv_printf_cat (&argv, "METRIC %d", r->metric); -+#endif -+ -+ argv_msg (D_ROUTE, &argv); -+ -+ netcmd_semaphore_lock (); -+ openvpn_execve_check (&argv, es, 0, "ERROR: Windows route add ipv6 command failed"); -+ netcmd_semaphore_release (); -+ -+#elif defined (TARGET_SOLARIS) -+ -+ /* example: route delete -inet6 2001:db8::/32 somegateway */ -+ /* GERT-TODO: this is untested, but should work */ -+ -+ argv_printf (&argv, "%s delete -inet6 %s/%d %s", -+ ROUTE_PATH, -+ network, -+ r6->netbits, -+ gateway ); -+ -+ argv_msg (D_ROUTE, &argv); -+ openvpn_execve_check (&argv, es, 0, "ERROR: Solaris route delete -inet6 command failed"); -+ -+#elif defined(TARGET_FREEBSD) || defined(TARGET_DRAGONFLY) -+ -+ argv_printf (&argv, "%s delete -inet6 %s/%d -iface %s", -+ ROUTE_PATH, -+ network, -+ r6->netbits, -+ device ); -+ -+ argv_msg (D_ROUTE, &argv); -+ openvpn_execve_check (&argv, es, 0, "ERROR: *BSD route delete -inet6 command failed"); -+ -+#elif defined(TARGET_DARWIN) -+ -+ argv_printf (&argv, "%s delete -inet6 %s -prefixlen %d -iface %s", -+ ROUTE_PATH, -+ network, r6->netbits, device ); -+ -+ argv_msg (D_ROUTE, &argv); -+ openvpn_execve_check (&argv, es, 0, "ERROR: *BSD route delete -inet6 command failed"); -+ -+#elif defined(TARGET_OPENBSD) -+ -+ argv_printf (&argv, "%s delete -inet6 %s -prefixlen %d %s", -+ ROUTE_PATH, -+ network, r6->netbits, gateway ); -+ -+ argv_msg (D_ROUTE, &argv); -+ openvpn_execve_check (&argv, es, 0, "ERROR: OpenBSD route delete -inet6 command failed"); -+ -+#elif defined(TARGET_NETBSD) -+ -+ argv_printf (&argv, "%s delete -inet6 %s/%d %s", -+ ROUTE_PATH, -+ network, r6->netbits, gateway ); -+ -+ argv_msg (D_ROUTE, &argv); -+ openvpn_execve_check (&argv, es, 0, "ERROR: NetBSD route delete -inet6 command failed"); -+ -+#else -+ msg (M_FATAL, "Sorry, but I don't know how to do 'route ipv6' commands on this operating system. Try putting your routes in a --route-down script"); -+#endif -+ -+ argv_reset (&argv); -+ gc_free (&gc); -+} -+ - /* - * The --redirect-gateway option requires OS-specific code below - * to get the current default gateway. -diff --git a/route.h b/route.h -index c5cbb7c..6a7704f 100644 ---- a/route.h -+++ b/route.h -@@ -92,6 +92,19 @@ struct route_option_list { - struct route_option routes[EMPTY_ARRAY_SIZE]; - }; - -+struct route_ipv6_option { -+ const char *prefix; /* e.g. "2001:db8:1::/64" */ -+ const char *gateway; /* e.g. "2001:db8:0::2" */ -+ const char *metric; /* e.g. "5" */ -+}; -+ -+struct route_ipv6_option_list { -+ unsigned int flags; -+ int capacity; -+ int n; -+ struct route_ipv6_option routes_ipv6[EMPTY_ARRAY_SIZE]; -+}; -+ - struct route { - bool defined; - const struct route_option *option; -@@ -113,6 +126,31 @@ struct route_list { - struct route routes[EMPTY_ARRAY_SIZE]; - }; - -+struct route_ipv6 { -+ bool defined; -+ const struct route_ipv6_option *option; -+ struct in6_addr network; -+ unsigned int netbits; -+ struct in6_addr gateway; -+ bool metric_defined; -+ int metric; -+}; -+ -+struct route_ipv6_list { -+ bool routes_added; -+ unsigned int flags; -+ int default_metric; -+ bool default_metric_defined; -+ struct in6_addr remote_endpoint_ipv6; -+ bool remote_endpoint_defined; -+ bool did_redirect_default_gateway; /* TODO (?) */ -+ bool did_local; /* TODO (?) */ -+ int capacity; -+ int n; -+ struct route_ipv6 routes_ipv6[EMPTY_ARRAY_SIZE]; -+}; -+ -+ - #if P2MP - /* internal OpenVPN route */ - struct iroute { -@@ -120,15 +158,25 @@ struct iroute { - int netbits; - struct iroute *next; - }; -+ -+struct iroute_ipv6 { -+ struct in6_addr network; -+ unsigned int netbits; -+ struct iroute_ipv6 *next; -+}; - #endif - - struct route_option_list *new_route_option_list (const int max_routes, struct gc_arena *a); -+struct route_ipv6_option_list *new_route_ipv6_option_list (const int max_routes, struct gc_arena *a); - struct route_option_list *clone_route_option_list (const struct route_option_list *src, struct gc_arena *a); - void copy_route_option_list (struct route_option_list *dest, const struct route_option_list *src); - - struct route_list *new_route_list (const int max_routes, struct gc_arena *a); -+struct route_ipv6_list *new_route_ipv6_list (const int max_routes, struct gc_arena *a); - - void add_route (struct route *r, const struct tuntap *tt, unsigned int flags, const struct env_set *es); -+void add_route_ipv6 (struct route_ipv6 *r, const struct tuntap *tt, unsigned int flags, const struct env_set *es); -+void delete_route_ipv6 (const struct route_ipv6 *r, const struct tuntap *tt, unsigned int flags, const struct env_set *es); - - void add_route_to_option_list (struct route_option_list *l, - const char *network, -@@ -136,6 +184,11 @@ void add_route_to_option_list (struct route_option_list *l, - const char *gateway, - const char *metric); - -+void add_route_ipv6_to_option_list (struct route_ipv6_option_list *l, -+ const char *prefix, -+ const char *gateway, -+ const char *metric); -+ - bool init_route_list (struct route_list *rl, - const struct route_option_list *opt, - const char *remote_endpoint, -@@ -143,21 +196,30 @@ bool init_route_list (struct route_list *rl, - in_addr_t remote_host, - struct env_set *es); - -+bool init_route_ipv6_list (struct route_ipv6_list *rl6, -+ const struct route_ipv6_option_list *opt6, -+ const char *remote_endpoint, -+ int default_metric, -+ struct env_set *es); -+ - void route_list_add_default_gateway (struct route_list *rl, - struct env_set *es, - const in_addr_t addr); - - void add_routes (struct route_list *rl, -+ struct route_ipv6_list *rl6, - const struct tuntap *tt, - unsigned int flags, - const struct env_set *es); - - void delete_routes (struct route_list *rl, -+ struct route_ipv6_list *rl6, - const struct tuntap *tt, - unsigned int flags, - const struct env_set *es); - - void setenv_routes (struct env_set *es, const struct route_list *rl); -+void setenv_routes_ipv6 (struct env_set *es, const struct route_ipv6_list *rl6); - - bool is_special_addr (const char *addr_str); - -diff --git a/socket.c b/socket.c -index 4720398..c04edc9 100644 ---- a/socket.c -+++ b/socket.c -@@ -342,6 +342,24 @@ ip_addr_dotted_quad_safe (const char *dotted_quad) - } - } - -+bool -+ipv6_addr_safe (const char *ipv6_text_addr) -+{ -+ /* verify non-NULL */ -+ if (!ipv6_text_addr) -+ return false; -+ -+ /* verify length is within limits */ -+ if (strlen (ipv6_text_addr) > INET6_ADDRSTRLEN ) -+ return false; -+ -+ /* verify that string will convert to IPv6 address */ -+ { -+ struct in6_addr a6; -+ return inet_pton( AF_INET6, ipv6_text_addr, &a6 ) == 1; -+ } -+} -+ - static bool - dns_addr_safe (const char *addr) - { -@@ -2032,6 +2050,55 @@ print_in_addr_t (in_addr_t addr, unsigned int flags, struct gc_arena *gc) - return BSTR (&out); - } - -+/* -+ * Convert an in6_addr in host byte order -+ * to an ascii representation of an IPv6 address -+ */ -+const char * -+print_in6_addr (struct in6_addr a6, unsigned int flags, struct gc_arena *gc) -+{ -+ struct buffer out = alloc_buf_gc (64, gc); -+ char tmp_out_buf[64]; /* inet_ntop wants pointer to buffer */ -+ -+ if ( memcmp(&a6, &in6addr_any, sizeof(a6)) != 0 || -+ !(flags & IA_EMPTY_IF_UNDEF)) -+ { -+ inet_ntop (AF_INET6, &a6, tmp_out_buf, sizeof(tmp_out_buf)-1); -+ buf_printf (&out, "%s", tmp_out_buf ); -+ } -+ return BSTR (&out); -+} -+ -+/* add some offset to an ipv6 address -+ * (add in steps of 32 bits, taking overflow into next round) -+ */ -+#ifndef s6_addr32 -+# ifdef TARGET_SOLARIS -+# define s6_addr32 _S6_un._S6_u32 -+# else -+# define s6_addr32 __u6_addr.__u6_addr32 -+# endif -+#endif -+#ifndef UINT32_MAX -+# define UINT32_MAX (4294967295U) -+#endif -+struct in6_addr add_in6_addr( struct in6_addr base, uint32_t add ) -+{ -+ int i; -+ uint32_t h; -+ -+ for( i=3; i>=0 && add > 0 ; i-- ) -+ { -+ h = ntohl( base.s6_addr32[i] ); -+ base.s6_addr32[i] = htonl( (h+add) & UINT32_MAX ); -+ /* 32-bit overrun? -+ * caveat: can't do "h+add > UINT32_MAX" with 32bit math! -+ */ -+ add = ( h > UINT32_MAX - add )? 1: 0; -+ } -+ return base; -+} -+ - /* set environmental variables for ip/port in *addr */ - void - setenv_sockaddr (struct env_set *es, const char *name_prefix, const struct openvpn_sockaddr *addr, const bool flags) -@@ -2337,6 +2404,58 @@ link_socket_write_udp_posix_sendmsg (struct link_socket *sock, - - #ifdef WIN32 - -+/* -+ * inet_ntop() and inet_pton() wrap-implementations using -+ * WSAAddressToString() and WSAStringToAddress() functions -+ */ -+const char * -+inet_ntop(int af, const void *src, char *dst, socklen_t size) -+{ -+ struct sockaddr_storage ss; -+ unsigned long s = size; -+ -+ CLEAR(ss); -+ ss.ss_family = af; -+ -+ switch(af) { -+ case AF_INET: -+ ((struct sockaddr_in *)&ss)->sin_addr = *(struct in_addr *)src; -+ break; -+ case AF_INET6: -+ ((struct sockaddr_in6 *)&ss)->sin6_addr = *(struct in6_addr *)src; -+ break; -+ default: -+ ASSERT (0); -+ } -+ // cannot direclty use &size because of strict aliasing rules -+ return (WSAAddressToString((struct sockaddr *)&ss, sizeof(ss), NULL, dst, &s) == 0)? -+ dst : NULL; -+} -+ -+int -+inet_pton(int af, const char *src, void *dst) -+{ -+ struct sockaddr_storage ss; -+ int size = sizeof(ss); -+ char src_copy[INET6_ADDRSTRLEN+1]; -+ -+ CLEAR(ss); -+ // stupid non-const API -+ strncpynt(src_copy, src, INET6_ADDRSTRLEN+1); -+ -+ if (WSAStringToAddress(src_copy, af, NULL, (struct sockaddr *)&ss, &size) == 0) { -+ switch(af) { -+ case AF_INET: -+ *(struct in_addr *)dst = ((struct sockaddr_in *)&ss)->sin_addr; -+ return 1; -+ case AF_INET6: -+ *(struct in6_addr *)dst = ((struct sockaddr_in6 *)&ss)->sin6_addr; -+ return 1; -+ } -+ } -+ return 0; -+} -+ - int - socket_recv_queue (struct link_socket *sock, int maxsize) - { -diff --git a/socket.h b/socket.h -index eef98d1..17943e7 100644 ---- a/socket.h -+++ b/socket.h -@@ -351,6 +351,8 @@ const char *print_link_socket_actual (const struct link_socket_actual *act, - #define IA_EMPTY_IF_UNDEF (1<<0) - #define IA_NET_ORDER (1<<1) - const char *print_in_addr_t (in_addr_t addr, unsigned int flags, struct gc_arena *gc); -+const char *print_in6_addr (struct in6_addr addr6, unsigned int flags, struct gc_arena *gc); -+struct in6_addr add_in6_addr( struct in6_addr base, uint32_t add ); - - #define SA_IP_PORT (1<<0) - #define SA_SET_IF_NONZERO (1<<1) -@@ -404,6 +406,7 @@ int openvpn_inet_aton (const char *dotted_quad, struct in_addr *addr); - bool ip_addr_dotted_quad_safe (const char *dotted_quad); - bool ip_or_dns_addr_safe (const char *addr, const bool allow_fqdn); - bool mac_addr_safe (const char *mac_addr); -+bool ipv6_addr_safe (const char *ipv6_text_addr); - - socket_descriptor_t create_socket_tcp (void); - -diff --git a/syshead.h b/syshead.h -index b81ce59..fe4af3f 100644 ---- a/syshead.h -+++ b/syshead.h -@@ -28,6 +28,10 @@ - /* - * Only include if not during configure - */ -+#ifdef WIN32 -+/* USE_PF_INET6: win32 ipv6 exists only after 0x0501 (XP) */ -+#define WINVER 0x0501 -+#endif - #ifndef PACKAGE_NAME - #include "config.h" - #endif -@@ -339,6 +343,9 @@ - #ifdef WIN32 - #include <iphlpapi.h> - #include <wininet.h> -+/* The following two headers are needed of USE_PF_INET6 */ -+#include <winsock2.h> -+#include <ws2tcpip.h> - #endif - - #ifdef HAVE_SYS_MMAN_H -diff --git a/tun.c b/tun.c -index d03e8c7..4be71de 100644 ---- a/tun.c -+++ b/tun.c -@@ -56,13 +56,14 @@ static void netsh_ifconfig (const struct tuntap_options *to, - const in_addr_t ip, - const in_addr_t netmask, - const unsigned int flags); -+static void netsh_command (const struct argv *a, int n); - - static const char *netsh_get_id (const char *dev_node, struct gc_arena *gc); - - #endif - - #ifdef TARGET_SOLARIS --static void solaris_error_close (struct tuntap *tt, const struct env_set *es, const char *actual); -+static void solaris_error_close (struct tuntap *tt, const struct env_set *es, const char *actual, bool unplumb_inet6); - #include <stropts.h> - #endif - -@@ -129,30 +130,6 @@ guess_tuntap_dev (const char *dev, - return dev; - } - --/* -- * Called by the open_tun function of OSes to check if we -- * explicitly support IPv6. -- * -- * In this context, explicit means that the OS expects us to -- * do something special to the tun socket in order to support -- * IPv6, i.e. it is not transparent. -- * -- * ipv6_explicitly_supported should be set to false if we don't -- * have any explicit IPv6 code in the tun device handler. -- * -- * If ipv6_explicitly_supported is true, then we have explicit -- * OS-specific tun dev code for handling IPv6. If so, tt->ipv6 -- * is set according to the --tun-ipv6 command line option. -- */ --static void --ipv6_support (bool ipv6, bool ipv6_explicitly_supported, struct tuntap* tt) --{ -- tt->ipv6 = false; -- if (ipv6_explicitly_supported) -- tt->ipv6 = ipv6; -- else if (ipv6) -- msg (M_WARN, "NOTE: explicit support for IPv6 tun devices is not provided for this OS"); --} - - /* --ifconfig-nowarn disables some options sanity checking */ - static const char ifconfig_warn_how_to_silence[] = "(silence this warning with --ifconfig-nowarn)"; -@@ -423,6 +400,8 @@ init_tun (const char *dev, /* --dev option */ - int topology, /* one of the TOP_x values */ - const char *ifconfig_local_parm, /* --ifconfig parm 1 */ - const char *ifconfig_remote_netmask_parm, /* --ifconfig parm 2 */ -+ const char *ifconfig_ipv6_local_parm, /* --ifconfig parm 1 IPv6 */ -+ const char *ifconfig_ipv6_remote_parm, /* --ifconfig parm 2 IPv6 */ - in_addr_t local_public, - in_addr_t remote_public, - const bool strict_warn, -@@ -537,6 +516,40 @@ init_tun (const char *dev, /* --dev option */ - - tt->did_ifconfig_setup = true; - } -+ -+ if (ifconfig_ipv6_local_parm && ifconfig_ipv6_remote_parm) -+ { -+ const char *ifconfig_ipv6_local = NULL; -+ const char *ifconfig_ipv6_remote = NULL; -+ -+ /* -+ * Convert arguments to binary IPv6 addresses. -+ */ -+ -+ if ( inet_pton( AF_INET6, ifconfig_ipv6_local_parm, &tt->local_ipv6 ) != 1 || -+ inet_pton( AF_INET6, ifconfig_ipv6_remote_parm, &tt->remote_ipv6 ) != 1 ) -+ { -+ msg( M_FATAL, "init_tun: problem converting IPv6 ifconfig addresses %s and %s to binary", ifconfig_ipv6_local_parm, ifconfig_ipv6_remote_parm ); -+ } -+ tt->netbits_ipv6 = 64; -+ -+ /* -+ * Set ifconfig parameters -+ */ -+ ifconfig_ipv6_local = print_in6_addr (tt->local_ipv6, 0, &gc); -+ ifconfig_ipv6_remote = print_in6_addr (tt->remote_ipv6, 0, &gc); -+ -+ /* -+ * Set environmental variables with ifconfig parameters. -+ */ -+ if (es) -+ { -+ setenv_str (es, "ifconfig_ipv6_local", ifconfig_ipv6_local); -+ setenv_str (es, "ifconfig_ipv6_remote", ifconfig_ipv6_remote); -+ } -+ tt->did_ifconfig_ipv6_setup = true; -+ } -+ - gc_free (&gc); - return tt; - } -@@ -559,6 +572,40 @@ init_tun_post (struct tuntap *tt, - #endif - } - -+#if defined(TARGET_WIN32) || \ -+ defined(TARGET_DARWIN) || defined(TARGET_NETBSD) || defined(TARGET_OPENBSD) -+ -+/* some of the platforms will auto-add a "network route" pointing -+ * to the interface on "ifconfig tunX 2001:db8::1/64", others need -+ * an extra call to "route add..." -+ * -> helper function to simplify code below -+ */ -+void add_route_connected_v6_net(struct tuntap * tt, -+ const struct env_set *es) -+{ -+ struct route_ipv6 r6; -+ -+ r6.defined = true; -+ r6.network = tt->local_ipv6; -+ r6.netbits = tt->netbits_ipv6; -+ r6.gateway = tt->local_ipv6; -+ add_route_ipv6 (&r6, tt, 0, es); -+} -+ -+void delete_route_connected_v6_net(struct tuntap * tt, -+ const struct env_set *es) -+{ -+ struct route_ipv6 r6; -+ -+ r6.defined = true; -+ r6.network = tt->local_ipv6; -+ r6.netbits = tt->netbits_ipv6; -+ r6.gateway = tt->local_ipv6; -+ delete_route_ipv6 (&r6, tt, 0, es); -+} -+#endif -+ -+ - /* execute the ifconfig command through the shell */ - void - do_ifconfig (struct tuntap *tt, -@@ -574,10 +621,16 @@ do_ifconfig (struct tuntap *tt, - const char *ifconfig_local = NULL; - const char *ifconfig_remote_netmask = NULL; - const char *ifconfig_broadcast = NULL; -+ const char *ifconfig_ipv6_local = NULL; -+ const char *ifconfig_ipv6_remote = NULL; -+ bool do_ipv6 = false; - struct argv argv; - - argv_init (&argv); - -+ msg( M_INFO, "do_ifconfig, tt->ipv6=%d, tt->did_ifconfig_ipv6_setup=%d", -+ tt->ipv6, tt->did_ifconfig_ipv6_setup ); -+ - /* - * We only handle TUN/TAP devices here, not --dev null devices. - */ -@@ -589,6 +642,13 @@ do_ifconfig (struct tuntap *tt, - ifconfig_local = print_in_addr_t (tt->local, 0, &gc); - ifconfig_remote_netmask = print_in_addr_t (tt->remote_netmask, 0, &gc); - -+ if ( tt->ipv6 && tt->did_ifconfig_ipv6_setup ) -+ { -+ ifconfig_ipv6_local = print_in6_addr (tt->local_ipv6, 0, &gc); -+ ifconfig_ipv6_remote = print_in6_addr (tt->remote_ipv6, 0, &gc); -+ do_ipv6 = true; -+ } -+ - /* - * If TAP-style device, generate broadcast address. - */ -@@ -647,7 +707,19 @@ do_ifconfig (struct tuntap *tt, - argv_msg (M_INFO, &argv); - openvpn_execve_check (&argv, es, S_FATAL, "Linux ip addr add failed"); - } -- tt->did_ifconfig = true; -+ if ( do_ipv6 ) -+ { -+ argv_printf( &argv, -+ "%s -6 addr add %s/%d dev %s", -+ iproute_path, -+ ifconfig_ipv6_local, -+ tt->netbits_ipv6, -+ actual -+ ); -+ argv_msg (M_INFO, &argv); -+ openvpn_execve_check (&argv, es, S_FATAL, "Linux ip -6 addr add failed"); -+ } -+ tt->did_ifconfig = true; - #else - if (tun) - argv_printf (&argv, -@@ -670,6 +742,18 @@ do_ifconfig (struct tuntap *tt, - ); - argv_msg (M_INFO, &argv); - openvpn_execve_check (&argv, es, S_FATAL, "Linux ifconfig failed"); -+ if ( do_ipv6 ) -+ { -+ argv_printf (&argv, -+ "%s %s inet6 add %s/%d", -+ IFCONFIG_PATH, -+ actual, -+ ifconfig_ipv6_local, -+ tt->netbits_ipv6 -+ ); -+ argv_msg (M_INFO, &argv); -+ openvpn_execve_check (&argv, es, S_FATAL, "Linux ifconfig inet6 failed"); -+ } - tt->did_ifconfig = true; - - #endif /*CONFIG_FEATURE_IPROUTE*/ -@@ -693,7 +777,7 @@ do_ifconfig (struct tuntap *tt, - - argv_msg (M_INFO, &argv); - if (!openvpn_execve_check (&argv, es, 0, "Solaris ifconfig phase-1 failed")) -- solaris_error_close (tt, es, actual); -+ solaris_error_close (tt, es, actual, false); - - argv_printf (&argv, - "%s %s netmask 255.255.255.255", -@@ -725,7 +809,53 @@ do_ifconfig (struct tuntap *tt, - - argv_msg (M_INFO, &argv); - if (!openvpn_execve_check (&argv, es, 0, "Solaris ifconfig phase-2 failed")) -- solaris_error_close (tt, es, actual); -+ solaris_error_close (tt, es, actual, false); -+ -+ if ( do_ipv6 ) -+ { -+ argv_printf (&argv, "%s %s inet6 unplumb", -+ IFCONFIG_PATH, actual ); -+ argv_msg (M_INFO, &argv); -+ openvpn_execve_check (&argv, es, 0, NULL); -+ -+ if ( tt->type == DEV_TYPE_TUN ) -+ { -+ argv_printf (&argv, -+ "%s %s inet6 plumb %s/%d %s up", -+ IFCONFIG_PATH, -+ actual, -+ ifconfig_ipv6_local, -+ tt->netbits_ipv6, -+ ifconfig_ipv6_remote -+ ); -+ } -+ else /* tap mode */ -+ { -+ /* base IPv6 tap interface needs to be brought up first -+ */ -+ argv_printf (&argv, "%s %s inet6 plumb up", -+ IFCONFIG_PATH, actual ); -+ argv_msg (M_INFO, &argv); -+ if (!openvpn_execve_check (&argv, es, 0, "Solaris ifconfig IPv6 (prepare) failed")) -+ solaris_error_close (tt, es, actual, true); -+ -+ /* we might need to do "ifconfig %s inet6 auto-dhcp drop" -+ * after the system has noticed the interface and fired up -+ * the DHCPv6 client - but this takes quite a while, and the -+ * server will ignore the DHCPv6 packets anyway. So we don't. -+ */ -+ -+ /* static IPv6 addresses need to go to a subinterface (tap0:1) -+ */ -+ argv_printf (&argv, -+ "%s %s inet6 addif %s/%d up", -+ IFCONFIG_PATH, actual, -+ ifconfig_ipv6_local, tt->netbits_ipv6 ); -+ } -+ argv_msg (M_INFO, &argv); -+ if (!openvpn_execve_check (&argv, es, 0, "Solaris ifconfig IPv6 failed")) -+ solaris_error_close (tt, es, actual, true); -+ } - - if (!tun && tt->topology == TOP_SUBNET) - { -@@ -787,10 +917,42 @@ do_ifconfig (struct tuntap *tt, - ); - argv_msg (M_INFO, &argv); - openvpn_execve_check (&argv, es, S_FATAL, "OpenBSD ifconfig failed"); -+ if ( do_ipv6 ) -+ { -+ argv_printf (&argv, -+ "%s %s inet6 %s/%d", -+ IFCONFIG_PATH, -+ actual, -+ ifconfig_ipv6_local, -+ tt->netbits_ipv6 -+ ); -+ argv_msg (M_INFO, &argv); -+ openvpn_execve_check (&argv, es, S_FATAL, "OpenBSD ifconfig inet6 failed"); -+ -+ /* and, hooray, we explicitely need to add a route... */ -+ add_route_connected_v6_net(tt, es); -+ } - tt->did_ifconfig = true; - - #elif defined(TARGET_NETBSD) - -+/* whether or not NetBSD can do IPv6 can be seen by the availability of -+ * the TUNSIFHEAD ioctl() - see next TARGET_NETBSD block for more details -+ */ -+#ifdef TUNSIFHEAD -+# define NETBSD_MULTI_AF -+#endif -+ -+ /* as on OpenBSD and Darwin, destroy and re-create tun<x> interface -+ */ -+ argv_printf (&argv, "%s %s destroy", IFCONFIG_PATH, actual ); -+ argv_msg (M_INFO, &argv); -+ openvpn_execve_check (&argv, es, 0, "NetBSD ifconfig destroy failed"); -+ -+ argv_printf (&argv, "%s %s create", IFCONFIG_PATH, actual ); -+ argv_msg (M_INFO, &argv); -+ openvpn_execve_check (&argv, es, S_FATAL, "NetBSD ifconfig create failed"); -+ - if (tun) - argv_printf (&argv, - "%s %s %s %s mtu %d netmask 255.255.255.255 up", -@@ -817,6 +979,27 @@ do_ifconfig (struct tuntap *tt, - ); - argv_msg (M_INFO, &argv); - openvpn_execve_check (&argv, es, S_FATAL, "NetBSD ifconfig failed"); -+ -+ if ( do_ipv6 ) -+ { -+#ifdef NETBSD_MULTI_AF -+ argv_printf (&argv, -+ "%s %s inet6 %s/%d", -+ IFCONFIG_PATH, -+ actual, -+ ifconfig_ipv6_local, -+ tt->netbits_ipv6 -+ ); -+ argv_msg (M_INFO, &argv); -+ openvpn_execve_check (&argv, es, S_FATAL, "NetBSD ifconfig inet6 failed"); -+ -+ /* and, hooray, we explicitely need to add a route... */ -+ add_route_connected_v6_net(tt, es); -+#else -+ msg( M_INFO, "no IPv6 support for tun interfaces on NetBSD before 4.0 (if your system is newer, recompile openvpn)" ); -+ tt->ipv6 = false; -+#endif -+ } - tt->did_ifconfig = true; - - #elif defined(TARGET_DARWIN) -@@ -882,6 +1065,22 @@ do_ifconfig (struct tuntap *tt, - add_route (&r, tt, 0, es); - } - -+ if ( do_ipv6 ) -+ { -+ argv_printf (&argv, -+ "%s %s inet6 %s/%d", -+ IFCONFIG_PATH, -+ actual, -+ ifconfig_ipv6_local, -+ tt->netbits_ipv6 -+ ); -+ argv_msg (M_INFO, &argv); -+ openvpn_execve_check (&argv, es, S_FATAL, "MacOS X ifconfig inet6 failed"); -+ -+ /* and, hooray, we explicitely need to add a route... */ -+ add_route_connected_v6_net(tt, es); -+ } -+ - #elif defined(TARGET_FREEBSD)||defined(TARGET_DRAGONFLY) - - /* example: ifconfig tun2 10.2.0.2 10.2.0.1 mtu 1450 netmask 255.255.255.255 up */ -@@ -920,6 +1119,19 @@ do_ifconfig (struct tuntap *tt, - add_route (&r, tt, 0, es); - } - -+ if ( do_ipv6 ) -+ { -+ argv_printf (&argv, -+ "%s %s inet6 %s/%d", -+ IFCONFIG_PATH, -+ actual, -+ ifconfig_ipv6_local, -+ tt->netbits_ipv6 -+ ); -+ argv_msg (M_INFO, &argv); -+ openvpn_execve_check (&argv, es, S_FATAL, "FreeBSD ifconfig inet6 failed"); -+ } -+ - #elif defined (WIN32) - { - /* -@@ -959,6 +1171,34 @@ do_ifconfig (struct tuntap *tt, - tt->did_ifconfig = true; - } - -+ /* IPv6 always uses "netsh" interface */ -+ if ( do_ipv6 ) -+ { -+ char * saved_actual; -+ -+ if (!strcmp (actual, "NULL")) -+ msg (M_FATAL, "Error: When using --tun-ipv6, if you have more than one TAP-Win32 adapter, you must also specify --dev-node"); -+ -+ /* example: netsh interface ipv6 set address MyTap 2001:608:8003::d store=active */ -+ argv_printf (&argv, -+ "%s%sc interface ipv6 set address %s %s store=active", -+ get_win_sys_path(), -+ NETSH_PATH_SUFFIX, -+ actual, -+ ifconfig_ipv6_local ); -+ -+ netsh_command (&argv, 4); -+ -+ /* explicit route needed */ -+ /* on windows, OpenVPN does ifconfig first, open_tun later, so -+ * tt->actual_name might not yet be initialized, but routing code -+ * needs to know interface name - point to "actual", restore later -+ */ -+ saved_actual = tt->actual_name; -+ tt->actual_name = (char*) actual; -+ add_route_connected_v6_net(tt, es); -+ tt->actual_name = saved_actual; -+ } - #else - msg (M_FATAL, "Sorry, but I don't know how to do 'ifconfig' commands on this operating system. You should ifconfig your TUN/TAP device manually or use an --up script."); - #endif -@@ -991,14 +1231,16 @@ open_null (struct tuntap *tt) - #ifndef WIN32 - static void - open_tun_generic (const char *dev, const char *dev_type, const char *dev_node, -- bool ipv6, bool ipv6_explicitly_supported, bool dynamic, -+ bool ipv6_explicitly_supported, bool dynamic, - struct tuntap *tt) - { - char tunname[256]; - char dynamic_name[256]; - bool dynamic_opened = false; - -- ipv6_support (ipv6, ipv6_explicitly_supported, tt); -+ -+ if ( tt->ipv6 && ! ipv6_explicitly_supported ) -+ msg (M_WARN, "NOTE: explicit support for IPv6 tun devices is not provided for this OS"); - - if (tt->type == DEV_TYPE_NULL) - { -@@ -1094,16 +1336,16 @@ close_tun_generic (struct tuntap *tt) - #if !PEDANTIC - - void --open_tun (const char *dev, const char *dev_type, const char *dev_node, bool ipv6, struct tuntap *tt) -+open_tun (const char *dev, const char *dev_type, const char *dev_node, struct tuntap *tt) - { - struct ifreq ifr; - -- /* -- * Set tt->ipv6 to true if -- * (a) we have the capability of supporting --tun-ipv6, and -- * (b) --tun-ipv6 was specified. -+ /* warn if a very old linux version is used & --tun-ipv6 set - */ -- ipv6_support (ipv6, LINUX_IPV6, tt); -+#if LINUX_IPV6 == 0 -+ if ( tt->ipv6 ) -+ msg (M_WARN, "NOTE: explicit support for IPv6 tun devices is not provided for this OS"); -+#endif - - /* - * We handle --dev null specially, we do not open /dev/null for this. -@@ -1222,9 +1464,9 @@ open_tun (const char *dev, const char *dev_type, const char *dev_node, bool ipv6 - #else - - void --open_tun (const char *dev, const char *dev_type, const char *dev_node, bool ipv6, struct tuntap *tt) -+open_tun (const char *dev, const char *dev_type, const char *dev_node, struct tuntap *tt) - { -- open_tun_generic (dev, dev_type, dev_node, ipv6, false, true, tt); -+ open_tun_generic (dev, dev_type, dev_node, false, true, tt); - } - - #endif /* HAVE_LINUX_IF_TUN_H */ -@@ -1244,7 +1486,7 @@ open_tun (const char *dev, const char *dev_type, const char *dev_node, bool ipv6 - #endif - - void --tuncfg (const char *dev, const char *dev_type, const char *dev_node, bool ipv6, int persist_mode, const char *username, const char *groupname, const struct tuntap_options *options) -+tuncfg (const char *dev, const char *dev_type, const char *dev_node, int persist_mode, const char *username, const char *groupname, const struct tuntap_options *options) - { - struct tuntap *tt; - -@@ -1252,7 +1494,7 @@ tuncfg (const char *dev, const char *dev_type, const char *dev_node, bool ipv6, - clear_tuntap (tt); - tt->type = dev_type_enum (dev, dev_type); - tt->options = *options; -- open_tun (dev, dev_type, dev_node, ipv6, tt); -+ open_tun (dev, dev_type, dev_node, tt); - if (ioctl (tt->fd, TUNSETPERSIST, persist_mode) < 0) - msg (M_ERR, "Cannot ioctl TUNSETPERSIST(%d) %s", persist_mode, dev); - if (username != NULL) -@@ -1395,7 +1637,7 @@ read_tun (struct tuntap* tt, uint8_t *buf, int len) - #endif - - void --open_tun (const char *dev, const char *dev_type, const char *dev_node, bool ipv6, struct tuntap *tt) -+open_tun (const char *dev, const char *dev_type, const char *dev_node, struct tuntap *tt) - { - int if_fd, ip_muxid, arp_muxid, arp_fd, ppa = -1; - struct lifreq ifr; -@@ -1406,8 +1648,11 @@ open_tun (const char *dev, const char *dev_type, const char *dev_node, bool ipv6 - bool is_tun; - struct strioctl strioc_if, strioc_ppa; - -- ipv6_support (ipv6, true, tt); -- memset(&ifr, 0x0, sizeof(ifr)); -+ /* improved generic TUN/TAP driver from -+ * http://www.whiteboard.ne.jp/~admin2/tuntap/ -+ * has IPv6 support -+ */ -+ CLEAR(ifr); - - if (tt->type == DEV_TYPE_NULL) - { -@@ -1561,6 +1806,18 @@ solaris_close_tun (struct tuntap *tt) - { - if (tt) - { -+ /* IPv6 interfaces need to be 'manually' de-configured */ -+ if ( tt->ipv6 && tt->did_ifconfig_ipv6_setup ) -+ { -+ struct argv argv; -+ argv_init (&argv); -+ argv_printf( &argv, "%s %s inet6 unplumb", -+ IFCONFIG_PATH, tt->actual_name ); -+ argv_msg (M_INFO, &argv); -+ openvpn_execve_check (&argv, NULL, 0, "Solaris ifconfig inet6 unplumb failed"); -+ argv_reset (&argv); -+ } -+ - if (tt->ip_fd >= 0) - { - struct lifreq ifr; -@@ -1613,11 +1870,20 @@ close_tun (struct tuntap *tt) - } - - static void --solaris_error_close (struct tuntap *tt, const struct env_set *es, const char *actual) -+solaris_error_close (struct tuntap *tt, const struct env_set *es, -+ const char *actual, bool unplumb_inet6 ) - { - struct argv argv; - argv_init (&argv); - -+ if (unplumb_inet6) -+ { -+ argv_printf( &argv, "%s %s inet6 unplumb", -+ IFCONFIG_PATH, actual ); -+ argv_msg (M_INFO, &argv); -+ openvpn_execve_check (&argv, es, 0, "Solaris ifconfig inet6 unplumb failed"); -+ } -+ - argv_printf (&argv, - "%s %s unplumb", - IFCONFIG_PATH, -@@ -1674,9 +1940,9 @@ read_tun (struct tuntap* tt, uint8_t *buf, int len) - */ - - void --open_tun (const char *dev, const char *dev_type, const char *dev_node, bool ipv6, struct tuntap *tt) -+open_tun (const char *dev, const char *dev_type, const char *dev_node, struct tuntap *tt) - { -- open_tun_generic (dev, dev_type, dev_node, ipv6, true, true, tt); -+ open_tun_generic (dev, dev_type, dev_node, true, true, tt); - - /* Enable multicast on the interface */ - if (tt->fd >= 0) -@@ -1697,12 +1963,31 @@ open_tun (const char *dev, const char *dev_type, const char *dev_node, bool ipv6 - } - } - -+/* the current way OpenVPN handles tun devices on OpenBSD leads to -+ * lingering tunX interfaces after close -> for a full cleanup, they -+ * need to be explicitely destroyed -+ */ -+ - void - close_tun (struct tuntap* tt) - { - if (tt) - { -+ struct gc_arena gc = gc_new (); -+ struct argv argv; -+ -+ /* setup command, close tun dev (clears tt->actual_name!), run command -+ */ -+ -+ argv_init (&argv); -+ argv_printf (&argv, "%s %s destroy", -+ IFCONFIG_PATH, tt->actual_name); -+ - close_tun_generic (tt); -+ -+ argv_msg (M_INFO, &argv); -+ openvpn_execve_check (&argv, NULL, 0, "OpenBSD 'destroy tun interface' failed (non-critical)"); -+ - free (tt); - } - } -@@ -1765,33 +2050,51 @@ read_tun (struct tuntap* tt, uint8_t *buf, int len) - #elif defined(TARGET_NETBSD) - - /* -- * NetBSD does not support IPv6 on tun out of the box, -- * but there exists a patch. When this patch is applied, -- * only two things are left to openvpn: -- * 1. Activate multicasting (this has already been done -- * before by the kernel, but we make sure that nobody -- * has deactivated multicasting inbetween. -- * 2. Deactivate "link layer mode" (otherwise NetBSD -- * prepends the address family to the packet, and we -- * would run into the same trouble as with OpenBSD. -+ * NetBSD before 4.0 does not support IPv6 on tun out of the box, -+ * but there exists a patch (sys/net/if_tun.c, 1.79->1.80, see PR 32944). -+ * -+ * NetBSD 4.0 and up do, but we need to put the tun interface into -+ * "multi_af" mode, which will prepend the address family to all packets -+ * (same as OpenBSD and FreeBSD). If this is not enabled, the kernel -+ * silently drops all IPv6 packets on output and gets confused on input. -+ * -+ * On earlier versions, multi_af is not available at all, so we have -+ * two different NetBSD code variants here :-( -+ * - */ - - void --open_tun (const char *dev, const char *dev_type, const char *dev_node, bool ipv6, struct tuntap *tt) -+open_tun (const char *dev, const char *dev_type, const char *dev_node, struct tuntap *tt) - { -- open_tun_generic (dev, dev_type, dev_node, ipv6, true, true, tt); -+#ifdef NETBSD_MULTI_AF -+ open_tun_generic (dev, dev_type, dev_node, true, true, tt); -+#else -+ open_tun_generic (dev, dev_type, dev_node, false, true, tt); -+#endif -+ - if (tt->fd >= 0) - { - int i = IFF_POINTOPOINT|IFF_MULTICAST; - ioctl (tt->fd, TUNSIFMODE, &i); /* multicast on */ - i = 0; - ioctl (tt->fd, TUNSLMODE, &i); /* link layer mode off */ -+ -+#ifdef NETBSD_MULTI_AF -+ i = 1; -+ if (ioctl (tt->fd, TUNSIFHEAD, &i) < 0) /* multi-af mode on */ -+ { -+ msg (M_WARN | M_ERRNO, "ioctl(TUNSIFHEAD): %s", strerror(errno)); -+ } -+#endif - } - } - - void - close_tun (struct tuntap *tt) - { -+ /* TODO: we really should cleanup non-persistant tunX with -+ * "ifconfig tunX destroy" here... -+ */ - if (tt) - { - close_tun_generic (tt); -@@ -1799,6 +2102,65 @@ close_tun (struct tuntap *tt) - } - } - -+#ifdef NETBSD_MULTI_AF -+ -+static inline int -+netbsd_modify_read_write_return (int len) -+{ -+ if (len > 0) -+ return len > sizeof (u_int32_t) ? len - sizeof (u_int32_t) : 0; -+ else -+ return len; -+} -+ -+int -+write_tun (struct tuntap* tt, uint8_t *buf, int len) -+{ -+ if (tt->type == DEV_TYPE_TUN) -+ { -+ u_int32_t type; -+ struct iovec iv[2]; -+ struct openvpn_iphdr *iph; -+ -+ iph = (struct openvpn_iphdr *) buf; -+ -+ if (tt->ipv6 && OPENVPN_IPH_GET_VER(iph->version_len) == 6) -+ type = htonl (AF_INET6); -+ else -+ type = htonl (AF_INET); -+ -+ iv[0].iov_base = (char *)&type; -+ iv[0].iov_len = sizeof (type); -+ iv[1].iov_base = buf; -+ iv[1].iov_len = len; -+ -+ return netbsd_modify_read_write_return (writev (tt->fd, iv, 2)); -+ } -+ else -+ return write (tt->fd, buf, len); -+} -+ -+int -+read_tun (struct tuntap* tt, uint8_t *buf, int len) -+{ -+ if (tt->type == DEV_TYPE_TUN) -+ { -+ u_int32_t type; -+ struct iovec iv[2]; -+ -+ iv[0].iov_base = (char *)&type; -+ iv[0].iov_len = sizeof (type); -+ iv[1].iov_base = buf; -+ iv[1].iov_len = len; -+ -+ return netbsd_modify_read_write_return (readv (tt->fd, iv, 2)); -+ } -+ else -+ return read (tt->fd, buf, len); -+} -+ -+#else /* not NETBSD_MULTI_AF -> older code, IPv4 only */ -+ - int - write_tun (struct tuntap* tt, uint8_t *buf, int len) - { -@@ -1810,6 +2172,7 @@ read_tun (struct tuntap* tt, uint8_t *buf, int len) - { - return read (tt->fd, buf, len); - } -+#endif /* NETBSD_MULTI_AF */ - - #elif defined(TARGET_FREEBSD) - -@@ -1823,9 +2186,9 @@ freebsd_modify_read_write_return (int len) - } - - void --open_tun (const char *dev, const char *dev_type, const char *dev_node, bool ipv6, struct tuntap *tt) -+open_tun (const char *dev, const char *dev_type, const char *dev_node, struct tuntap *tt) - { -- open_tun_generic (dev, dev_type, dev_node, ipv6, true, true, tt); -+ open_tun_generic (dev, dev_type, dev_node, true, true, tt); - - if (tt->fd >= 0 && tt->type == DEV_TYPE_TUN) - { -@@ -1911,9 +2274,9 @@ dragonfly_modify_read_write_return (int len) - } - - void --open_tun (const char *dev, const char *dev_type, const char *dev_node, bool ipv6, struct tuntap *tt) -+open_tun (const char *dev, const char *dev_type, const char *dev_node, struct tuntap *tt) - { -- open_tun_generic (dev, dev_type, dev_node, ipv6, true, true, tt); -+ open_tun_generic (dev, dev_type, dev_node, true, true, tt); - - if (tt->fd >= 0) - { -@@ -1982,6 +2345,61 @@ read_tun (struct tuntap* tt, uint8_t *buf, int len) - return read (tt->fd, buf, len); - } - -+#elif defined(TARGET_DARWIN) -+ -+/* Darwin (MacOS X) is mostly "just use the generic stuff", but there -+ * is always one caveat...: -+ * -+ * If IPv6 is configured, and the tun device is closed, the IPv6 address -+ * configured to the tun interface changes to a lingering /128 route -+ * pointing to lo0. Need to unconfigure... (observed on 10.5) -+ */ -+ -+void -+open_tun (const char *dev, const char *dev_type, const char *dev_node, struct tuntap *tt) -+{ -+ open_tun_generic (dev, dev_type, dev_node, false, true, tt); -+} -+ -+void -+close_tun (struct tuntap* tt) -+{ -+ if (tt) -+ { -+ struct gc_arena gc = gc_new (); -+ struct argv argv; -+ argv_init (&argv); -+ -+ if ( tt->ipv6 && tt->did_ifconfig_ipv6_setup ) -+ { -+ const char * ifconfig_ipv6_local = -+ print_in6_addr (tt->local_ipv6, 0, &gc); -+ -+ argv_printf (&argv, "%s delete -inet6 %s", -+ ROUTE_PATH, ifconfig_ipv6_local ); -+ argv_msg (M_INFO, &argv); -+ openvpn_execve_check (&argv, NULL, 0, "MacOS X 'remove inet6 route' failed (non-critical)"); -+ } -+ -+ close_tun_generic (tt); -+ free (tt); -+ argv_reset (&argv); -+ gc_free (&gc); -+ } -+} -+ -+int -+write_tun (struct tuntap* tt, uint8_t *buf, int len) -+{ -+ return write (tt->fd, buf, len); -+} -+ -+int -+read_tun (struct tuntap* tt, uint8_t *buf, int len) -+{ -+ return read (tt->fd, buf, len); -+} -+ - #elif defined(WIN32) - - int -@@ -3967,7 +4385,7 @@ fork_register_dns_action (struct tuntap *tt) - } - - void --open_tun (const char *dev, const char *dev_type, const char *dev_node, bool ipv6, struct tuntap *tt) -+open_tun (const char *dev, const char *dev_type, const char *dev_node, struct tuntap *tt) - { - struct gc_arena gc = gc_new (); - char device_path[256]; -@@ -3978,7 +4396,7 @@ open_tun (const char *dev, const char *dev_type, const char *dev_node, bool ipv6 - - /*netcmd_semaphore_lock ();*/ - -- ipv6_support (ipv6, false, tt); -+ msg( M_INFO, "open_tun, tt->ipv6=%d", tt->ipv6 ); - - if (tt->type == DEV_TYPE_NULL) - { -@@ -4432,6 +4850,26 @@ close_tun (struct tuntap *tt) - - if (tt) - { -+ if ( tt->ipv6 && tt->did_ifconfig_ipv6_setup ) -+ { -+ struct argv argv; -+ argv_init (&argv); -+ -+ /* remove route pointing to interface */ -+ delete_route_connected_v6_net(tt, NULL); -+ -+ /* netsh interface ipv6 delete address \"%s\" %s */ -+ const char * ifconfig_ipv6_local = print_in6_addr (tt->local_ipv6, 0, &gc); -+ argv_printf (&argv, -+ "%s%sc interface ipv6 delete address %s %s", -+ get_win_sys_path(), -+ NETSH_PATH_SUFFIX, -+ tt->actual_name, -+ ifconfig_ipv6_local ); -+ -+ netsh_command (&argv, 1); -+ argv_reset (&argv); -+ } - #if 1 - if (tt->ipapi_context_defined) - { -@@ -4535,9 +4973,9 @@ ipset2ascii_all (struct gc_arena *gc) - #else /* generic */ - - void --open_tun (const char *dev, const char *dev_type, const char *dev_node, bool ipv6, struct tuntap *tt) -+open_tun (const char *dev, const char *dev_type, const char *dev_node, struct tuntap *tt) - { -- open_tun_generic (dev, dev_type, dev_node, ipv6, false, true, tt); -+ open_tun_generic (dev, dev_type, dev_node, false, true, tt); - } - - void -diff --git a/tun.h b/tun.h -index 011ab54..f28b8d8 100644 ---- a/tun.h -+++ b/tun.h -@@ -130,6 +130,7 @@ struct tuntap - int topology; /* one of the TOP_x values */ - - bool did_ifconfig_setup; -+ bool did_ifconfig_ipv6_setup; - bool did_ifconfig; - - bool ipv6; -@@ -146,6 +147,10 @@ struct tuntap - in_addr_t remote_netmask; - in_addr_t broadcast; - -+ struct in6_addr local_ipv6; -+ struct in6_addr remote_ipv6; -+ int netbits_ipv6; -+ - #ifdef WIN32 - HANDLE hand; - struct overlapped_io reads; -@@ -197,7 +202,7 @@ tuntap_defined (const struct tuntap *tt) - void clear_tuntap (struct tuntap *tuntap); - - void open_tun (const char *dev, const char *dev_type, const char *dev_node, -- bool ipv6, struct tuntap *tt); -+ struct tuntap *tt); - - void close_tun (struct tuntap *tt); - -@@ -206,7 +211,7 @@ int write_tun (struct tuntap* tt, uint8_t *buf, int len); - int read_tun (struct tuntap* tt, uint8_t *buf, int len); - - void tuncfg (const char *dev, const char *dev_type, const char *dev_node, -- bool ipv6, int persist_mode, const char *username, -+ int persist_mode, const char *username, - const char *groupname, const struct tuntap_options *options); - - const char *guess_tuntap_dev (const char *dev, -@@ -219,6 +224,8 @@ struct tuntap *init_tun (const char *dev, /* --dev option */ - int topology, /* one of the TOP_x values */ - const char *ifconfig_local_parm, /* --ifconfig parm 1 */ - const char *ifconfig_remote_netmask_parm, /* --ifconfig parm 2 */ -+ const char *ifconfig_ipv6_local_parm, /* --ifconfig parm 1 / IPv6 */ -+ const char *ifconfig_ipv6_remote_parm, /* --ifconfig parm 2 / IPv6 */ - in_addr_t local_public, - in_addr_t remote_public, - const bool strict_warn, -diff --git a/win32.c b/win32.c -index 2b7bf7b..cf6cc2d 100644 ---- a/win32.c -+++ b/win32.c -@@ -874,16 +874,21 @@ win_safe_filename (const char *fn) - static char * - env_block (const struct env_set *es) - { -+ char * force_path = "PATH=C:\\Windows\\System32;C:\\WINDOWS;C:\\WINDOWS\\System32\\Wbem"; -+ - if (es) - { - struct env_item *e; - char *ret; - char *p; - size_t nchars = 1; -+ bool path_seen = false; - - for (e = es->list; e != NULL; e = e->next) - nchars += strlen (e->string) + 1; - -+ nchars += strlen(force_path)+1; -+ - ret = (char *) malloc (nchars); - check_malloc_return (ret); - -@@ -895,7 +900,18 @@ env_block (const struct env_set *es) - strcpy (p, e->string); - p += strlen (e->string) + 1; - } -+ if ( strncmp(e->string, "PATH=", 5 ) == 0 ) -+ path_seen = true; -+ } -+ -+ /* make sure PATH is set */ -+ if ( !path_seen ) -+ { -+ msg( M_INFO, "env_block: add %s", force_path ); -+ strcpy( p, force_path ); -+ p += strlen(force_path) + 1; - } -+ - *p = '\0'; - return ret; - } -diff --git a/win32.h b/win32.h -index b6a162e..829933f 100644 ---- a/win32.h -+++ b/win32.h -@@ -269,6 +269,8 @@ char *get_win_sys_path (void); - - /* call self in a subprocess */ - void fork_to_self (const char *cmdline); -+const char *inet_ntop(int af, const void *src, char *dst, socklen_t size); -+int inet_pton(int af, const char *src, void *st); - - /* Find temporary directory */ - const char *win_get_tempdir(); |