From: Benjamin Cama Date: Thu, 2 Feb 2012 01:15:14 +0000 (+0100) Subject: Merge branch 'common-cvs-git-upstream' into fdn-mods X-Git-Tag: 2.2.1-2fdn3.1~19^2 X-Git-Url: http://git.sameswireless.fr/l2tpns.git/commitdiff_plain/refs/heads/fdn-mods?hp=-c Merge branch 'common-cvs-git-upstream' into fdn-mods Signed-off-by: Benjamin Cama --- 99921507eb9b842d4f41c5516af1f455d4a49a99 diff --combined bgp.c index 85415d1,ea4ef45..7c1e6c0 --- a/bgp.c +++ b/bgp.c @@@ -10,8 -10,6 +10,6 @@@ * nor RFC2385 (which requires a kernel patch on 2.4 kernels). */ - char const *cvs_id_bgp = "$Id: bgp.c,v 1.12 2005/09/02 23:39:36 bodea Exp $"; - #include #include #include @@@ -29,14 -27,11 +27,14 @@@ static void bgp_clear(struct bgp_peer *peer); static void bgp_set_retry(struct bgp_peer *peer); -static void bgp_cidr(in_addr_t ip, in_addr_t mask, struct bgp_ip_prefix *pfx); static struct bgp_route_list *bgp_insert_route(struct bgp_route_list *head, struct bgp_route_list *new); +static struct bgp_route6_list *bgp_insert_route6(struct bgp_route6_list *head, + struct bgp_route6_list *new); +static void bgp_process_timers(struct bgp_peer *peer); static void bgp_free_routes(struct bgp_route_list *routes); +static void bgp_free_routes6(struct bgp_route6_list *routes); static char const *bgp_msg_type_str(uint8_t type); static int bgp_connect(struct bgp_peer *peer); static int bgp_handle_connect(struct bgp_peer *peer); @@@ -46,13 -41,11 +44,13 @@@ static int bgp_handle_input(struct bgp_ static int bgp_send_open(struct bgp_peer *peer); static int bgp_send_keepalive(struct bgp_peer *peer); static int bgp_send_update(struct bgp_peer *peer); +static int bgp_send_update6(struct bgp_peer *peer); static int bgp_send_notification(struct bgp_peer *peer, uint8_t code, uint8_t subcode); static uint16_t our_as; static struct bgp_route_list *bgp_routes = 0; +static struct bgp_route6_list *bgp_routes6 = 0; int bgp_configured = 0; struct bgp_peer *bgp_peers = 0; @@@ -93,7 -86,6 +91,7 @@@ int bgp_setup(int as return 0; bgp_routes = 0; + bgp_routes6 = 0; bgp_configured = 0; /* set by bgp_start */ return 1; @@@ -101,7 -93,7 +99,7 @@@ /* start connection with a peer */ int bgp_start(struct bgp_peer *peer, char *name, int as, int keepalive, - int hold, int enable) + int hold, struct in_addr update_source, int enable) { struct hostent *h; int ibgp; @@@ -130,7 -122,6 +128,7 @@@ } memcpy(&peer->addr, h->h_addr, sizeof(peer->addr)); + peer->source_addr = update_source.s_addr; peer->as = as > 0 ? as : our_as; ibgp = peer->as == our_as; @@@ -198,6 -189,15 +196,6 @@@ ADD_ATTRIBUTE(); - /* NEXT_HOP */ - a.flags = BGP_PATH_ATTR_FLAG_TRANS; - a.code = BGP_PATH_ATTR_CODE_NEXT_HOP; - ip = my_address; /* we're it */ - a.data.s.len = sizeof(ip); - memcpy(a.data.s.value, &ip, sizeof(ip)); - - ADD_ATTRIBUTE(); - /* MULTI_EXIT_DISC */ a.flags = BGP_PATH_ATTR_FLAG_OPTIONAL; a.code = BGP_PATH_ATTR_CODE_MULTI_EXIT_DISC; @@@ -227,25 -227,6 +225,25 @@@ ADD_ATTRIBUTE(); + /* remember the len before adding NEXT_HOP */ + peer->path_attr_len_without_nexthop = peer->path_attr_len; + + /* NEXT_HOP */ + a.flags = BGP_PATH_ATTR_FLAG_TRANS; + a.code = BGP_PATH_ATTR_CODE_NEXT_HOP; + if (config->nexthop_address) + { + ip = config->nexthop_address; + } + else + { + ip = my_address; /* we're it */ + } + a.data.s.len = sizeof(ip); + memcpy(a.data.s.value, &ip, sizeof(ip)); + + ADD_ATTRIBUTE(); + if (!(peer->path_attrs = malloc(peer->path_attr_len))) { LOG(0, 0, 0, "Can't allocate path_attrs for %s (%s)\n", @@@ -256,53 -237,6 +254,53 @@@ memcpy(peer->path_attrs, path_attrs, peer->path_attr_len); + /* multiprotocol attributes initialization */ + if (config->ipv6_prefix.s6_addr[0]) + { + struct bgp_attr_mp_reach_nlri_partial mp_reach_nlri_partial; + struct bgp_attr_mp_unreach_nlri_partial mp_unreach_nlri_partial; + + a.flags = BGP_PATH_ATTR_FLAG_OPTIONAL; + a.code = BGP_PATH_ATTR_CODE_MP_REACH_NLRI; + a.data.s.len = 0; /* will be set on UPDATE */ + + mp_reach_nlri_partial.afi = htons(BGP_MP_AFI_IPv6); + mp_reach_nlri_partial.safi = BGP_MP_SAFI_UNICAST; + mp_reach_nlri_partial.reserved = 0; + mp_reach_nlri_partial.next_hop_len = 16; + + /* use the defined nexthop6, or our address in ipv6_prefix */ + if (config->nexthop6_address.s6_addr[0]) + memcpy(&mp_reach_nlri_partial.next_hop, + &config->nexthop6_address.s6_addr, 16); + else + { + /* our address is ipv6prefix::1 */ + memcpy(&mp_reach_nlri_partial.next_hop, + &config->ipv6_prefix.s6_addr, 16); + mp_reach_nlri_partial.next_hop[15] = 1; + } + + memcpy(&a.data.s.value, &mp_reach_nlri_partial, + sizeof(struct bgp_attr_mp_reach_nlri_partial)); + memcpy(&peer->mp_reach_nlri_partial, &a, + BGP_PATH_ATTR_MP_REACH_NLRI_PARTIAL_SIZE); + + a.flags = BGP_PATH_ATTR_FLAG_OPTIONAL | BGP_PATH_ATTR_FLAG_EXTLEN; + a.code = BGP_PATH_ATTR_CODE_MP_UNREACH_NLRI; + a.data.e.len = 0; /* will be set on UPDATE */ + + mp_unreach_nlri_partial.afi = htons(BGP_MP_AFI_IPv6); + mp_unreach_nlri_partial.safi = BGP_MP_SAFI_UNICAST; + + memcpy(&a.data.e.value, &mp_unreach_nlri_partial, + sizeof(struct bgp_attr_mp_unreach_nlri_partial)); + memcpy(&peer->mp_unreach_nlri_partial, &a, + BGP_PATH_ATTR_MP_UNREACH_NLRI_PARTIAL_SIZE); + } + + peer->mp_handling = HandlingUnknown; + LOG(4, 0, 0, "Initiating BGP connection to %s (routing %s)\n", name, enable ? "enabled" : "suspended"); @@@ -331,8 -265,6 +329,8 @@@ static void bgp_clear(struct bgp_peer * bgp_free_routes(peer->routes); peer->routes = 0; + bgp_free_routes6(peer->routes6); + peer->routes6 = 0; peer->outbuf->packet.header.len = 0; peer->outbuf->done = 0; @@@ -393,39 -325,32 +391,39 @@@ static void bgp_set_retry(struct bgp_pe bgp_halt(peer); /* give up */ } -/* convert ip/mask to CIDR notation */ -static void bgp_cidr(in_addr_t ip, in_addr_t mask, struct bgp_ip_prefix *pfx) +/* insert route into list; sorted */ +static struct bgp_route_list *bgp_insert_route(struct bgp_route_list *head, + struct bgp_route_list *new) { - int i; - uint32_t b; - - /* convert to prefix notation */ - pfx->len = 32; - pfx->prefix = ip; + struct bgp_route_list *p = head; + struct bgp_route_list *e = 0; - if (!mask) /* bogus */ - mask = 0xffffffff; + while (p && memcmp(&p->dest, &new->dest, sizeof(p->dest)) < 0) + { + e = p; + p = p->next; + } - for (i = 0; i < 32 && ((b = ntohl(1 << i)), !(mask & b)); i++) + if (e) { - pfx->len--; - pfx->prefix &= ~b; + new->next = e->next; + e->next = new; + } + else + { + new->next = head; + head = new; } + + return head; } -/* insert route into list; sorted */ -static struct bgp_route_list *bgp_insert_route(struct bgp_route_list *head, - struct bgp_route_list *new) +/* insert route6 into list; sorted */ +static struct bgp_route6_list *bgp_insert_route6(struct bgp_route6_list *head, + struct bgp_route6_list *new) { - struct bgp_route_list *p = head; - struct bgp_route_list *e = 0; + struct bgp_route6_list *p = head; + struct bgp_route6_list *e = 0; while (p && memcmp(&p->dest, &new->dest, sizeof(p->dest)) < 0) { @@@ -454,14 -379,13 +452,14 @@@ * that if that route is later deleted we don't have to be concerned * about adding back the more specific one). */ -int bgp_add_route(in_addr_t ip, in_addr_t mask) +int bgp_add_route(in_addr_t ip, int prefixlen) { struct bgp_route_list *r = bgp_routes; struct bgp_route_list add; int i; - bgp_cidr(ip, mask, &add.dest); + add.dest.prefix = ip; + add.dest.len = prefixlen; add.next = 0; /* check for duplicate */ @@@ -500,69 -424,15 +498,69 @@@ return 1; } +/* add route to list for peers */ +/* + * Note: same provisions as above + */ +int bgp_add_route6(struct in6_addr ip, int prefixlen) +{ + struct bgp_route6_list *r = bgp_routes6; + struct bgp_route6_list add; + int i; + char ipv6addr[INET6_ADDRSTRLEN]; + + memcpy(&add.dest.prefix, &ip.s6_addr, 16); + add.dest.len = prefixlen; + add.next = 0; + + /* check for duplicate */ + while (r) + { + i = memcmp(&r->dest, &add.dest, sizeof(r->dest)); + if (!i) + return 1; /* already covered */ + + if (i > 0) + break; + + r = r->next; + } + + /* insert into route list; sorted */ + if (!(r = malloc(sizeof(*r)))) + { + LOG(0, 0, 0, "Can't allocate route for %s/%d (%s)\n", + inet_ntop(AF_INET6, &ip, ipv6addr, INET6_ADDRSTRLEN), add.dest.len, + strerror(errno)); + + return 0; + } + + memcpy(r, &add, sizeof(*r)); + bgp_routes6 = bgp_insert_route6(bgp_routes6, r); + + /* flag established peers for update */ + for (i = 0; i < BGP_NUM_PEERS; i++) + if (bgp_peers[i].state == Established + && bgp_peers[i].mp_handling == HandleIPv6Routes) + bgp_peers[i].update_routes6 = 1; + + LOG(4, 0, 0, "Registered BGP route %s/%d\n", + inet_ntop(AF_INET6, &ip, ipv6addr, INET6_ADDRSTRLEN), add.dest.len); + + return 1; +} + /* remove route from list for peers */ -int bgp_del_route(in_addr_t ip, in_addr_t mask) +int bgp_del_route(in_addr_t ip, int prefixlen) { struct bgp_route_list *r = bgp_routes; struct bgp_route_list *e = 0; struct bgp_route_list del; int i; - bgp_cidr(ip, mask, &del.dest); + del.dest.prefix = ip; + del.dest.len = prefixlen; del.next = 0; /* find entry in routes list and remove */ @@@ -603,58 -473,6 +601,58 @@@ return 1; } +/* remove route from list for peers */ +int bgp_del_route6(struct in6_addr ip, int prefixlen) +{ + struct bgp_route6_list *r = bgp_routes6; + struct bgp_route6_list *e = 0; + struct bgp_route6_list del; + int i; + char ipv6addr[INET6_ADDRSTRLEN]; + + memcpy(&del.dest.prefix, &ip.s6_addr, 16); + del.dest.len = prefixlen; + del.next = 0; + + /* find entry in routes list and remove */ + while (r) + { + i = memcmp(&r->dest, &del.dest, sizeof(r->dest)); + if (!i) + { + if (e) + e->next = r->next; + else + bgp_routes6 = r->next; + + free(r); + break; + } + + e = r; + + if (i > 0) + r = 0; /* stop */ + else + r = r->next; + } + + /* not found */ + if (!r) + return 1; + + /* flag established peers for update */ + for (i = 0; i < BGP_NUM_PEERS; i++) + if (bgp_peers[i].state == Established + && bgp_peers[i].mp_handling == HandleIPv6Routes) + bgp_peers[i].update_routes6 = 1; + + LOG(4, 0, 0, "Removed BGP route %s/%d\n", + inet_ntop(AF_INET6, &ip, ipv6addr, INET6_ADDRSTRLEN), del.dest.len); + + return 1; +} + /* enable or disable routing */ void bgp_enable_routing(int enable) { @@@ -799,68 -617,36 +797,68 @@@ int bgp_process(uint32_t events[] continue; } - /* process timers */ - if (peer->state == Established) + /* process pending IPv6 updates */ + if (peer->update_routes6 + && !peer->outbuf->packet.header.len) /* ditto */ { - if (time_now > peer->expire_time) - { - LOG(1, 0, 0, "No message from BGP peer %s in %ds\n", - peer->name, peer->hold); - - bgp_send_notification(peer, BGP_ERR_HOLD_TIMER_EXP, 0); + if (!bgp_send_update6(peer)) continue; - } - - if (time_now > peer->keepalive_time && !peer->outbuf->packet.header.len) - bgp_send_keepalive(peer); - } - else if (peer->state == Idle) - { - if (time_now > peer->retry_time) - bgp_connect(peer); } - else if (time_now > peer->state_time + BGP_STATE_TIME) + + /* process timers */ + bgp_process_timers(peer); + } + + return 1; +} + +/* process bgp timers only */ +void bgp_process_peers_timers() +{ + int i; + + if (!bgp_configured) + return; + + for (i = 0; i < BGP_NUM_PEERS; i++) + { + struct bgp_peer *peer = &bgp_peers[i]; + + if (peer->state == Disabled) + continue; + + bgp_process_timers(peer); + } +} + +static void bgp_process_timers(struct bgp_peer *peer) +{ + if (peer->state == Established) + { + if (time_now > peer->expire_time) { - LOG(1, 0, 0, "%s timer expired for BGP peer %s\n", - bgp_state_str(peer->state), peer->name); + LOG(1, 0, 0, "No message from BGP peer %s in %ds\n", + peer->name, peer->hold); - bgp_restart(peer); + bgp_send_notification(peer, BGP_ERR_HOLD_TIMER_EXP, 0); + return; } + + if (time_now > peer->keepalive_time && !peer->outbuf->packet.header.len) + bgp_send_keepalive(peer); + } + else if (peer->state == Idle) + { + if (time_now > peer->retry_time) + bgp_connect(peer); } + else if (time_now > peer->state_time + BGP_STATE_TIME) + { + LOG(1, 0, 0, "%s timer expired for BGP peer %s\n", + bgp_state_str(peer->state), peer->name); - return 1; + bgp_restart(peer); + } } static void bgp_free_routes(struct bgp_route_list *routes) @@@ -874,17 -660,6 +872,17 @@@ } } +static void bgp_free_routes6(struct bgp_route6_list *routes) +{ + struct bgp_route6_list *tmp; + + while ((tmp = routes)) + { + routes = tmp->next; + free(tmp); + } +} + char const *bgp_state_str(enum bgp_state state) { switch (state) @@@ -919,7 -694,6 +917,7 @@@ static int bgp_connect(struct bgp_peer { static int bgp_port = 0; struct sockaddr_in addr; + struct sockaddr_in source_addr; struct epoll_event ev; if (!bgp_port) @@@ -951,19 -725,6 +949,19 @@@ /* set to non-blocking */ fcntl(peer->sock, F_SETFL, fcntl(peer->sock, F_GETFL, 0) | O_NONBLOCK); + /* set source address */ + memset(&source_addr, 0, sizeof(source_addr)); + source_addr.sin_family = AF_INET; + source_addr.sin_addr.s_addr = peer->source_addr; /* defaults to INADDR_ANY */ + if (bind(peer->sock, (struct sockaddr *) &source_addr, sizeof(source_addr)) < 0) + { + LOG(1, 0, 0, "Can't set source address to %s: %s\n", + inet_ntoa(source_addr.sin_addr), strerror(errno)); + + bgp_set_retry(peer); + return 0; + } + /* try connect */ memset(&addr, 0, sizeof(addr)); addr.sin_family = AF_INET; @@@ -1139,12 -900,6 +1137,12 @@@ static int bgp_handle_input(struct bgp_ struct bgp_data_open data; int hold; int i; + off_t param_offset, capability_offset; + struct bgp_opt_param *param; + uint8_t capabilities_len; + char *capabilities = NULL; + struct bgp_capability *capability; + struct bgp_mp_cap_param *mp_cap; for (i = 0; i < sizeof(p->header.marker); i++) { @@@ -1207,93 -962,10 +1205,93 @@@ if (peer->keepalive * 3 > peer->hold) peer->keepalive = peer->hold / 3; + /* check for optional parameters */ + /* 2 is for the size of type + len (both uint8_t) */ + for (param_offset = 0; + param_offset < data.opt_len; + param_offset += 2 + param->len) + { + param = (struct bgp_opt_param *)((char *)&data.opt_params + param_offset); + + /* sensible check */ + if (data.opt_len - param_offset < 2 + || param->len > data.opt_len - param_offset - 2) + { + LOG(1, 0, 0, "Malformed Optional Parameter list from BGP peer %s\n", + peer->name); + + bgp_send_notification(peer, BGP_ERR_OPEN, BGP_ERR_UNSPEC); + return 0; + } + + /* we know only one parameter type */ + if (param->type != BGP_PARAM_TYPE_CAPABILITY) + { + LOG(1, 0, 0, "Unsupported Optional Parameter type %d from BGP peer %s\n", + param->type, peer->name); + + bgp_send_notification(peer, BGP_ERR_OPEN, BGP_ERR_OPN_UNSUP_PARAM); + return 0; + } + + capabilities_len = param->len; + capabilities = (char *)¶m->value; + + /* look for BGP multiprotocol capability */ + for (capability_offset = 0; + capability_offset < capabilities_len; + capability_offset += 2 + capability->len) + { + capability = (struct bgp_capability *)(capabilities + capability_offset); + + /* sensible check */ + if (capabilities_len - capability_offset < 2 + || capability->len > capabilities_len - capability_offset - 2) + { + LOG(1, 0, 0, "Malformed Capabilities list from BGP peer %s\n", + peer->name); + + bgp_send_notification(peer, BGP_ERR_OPEN, BGP_ERR_UNSPEC); + return 0; + } + + /* we only know one capability code */ + if (capability->code != BGP_CAP_CODE_MP + && capability->len != sizeof(struct bgp_mp_cap_param)) + { + LOG(4, 0, 0, "Unsupported Capability code %d from BGP peer %s\n", + capability->code, peer->name); + + /* we don't terminate, still; we just jump to the next one */ + continue; + } + + mp_cap = (struct bgp_mp_cap_param *)&capability->value; + /* the only tuple we support */ + if (ntohs(mp_cap->afi) != BGP_MP_AFI_IPv6 && mp_cap->safi != BGP_MP_SAFI_UNICAST) + { + LOG(4, 0, 0, "Unsupported multiprotocol AFI %d and SAFI %d from BGP peer %s\n", + mp_cap->afi, mp_cap->safi, peer->name); + + /* we don't terminate, still; we just jump to the next one */ + continue; + } + + /* yes it can! */ + peer->mp_handling = HandleIPv6Routes; + } + } + + if (peer->mp_handling != HandleIPv6Routes) + { + peer->mp_handling = DoesntHandleIPv6Routes; + if (config->ipv6_prefix.s6_addr[0]) + LOG(1, 0, 0, "Warning: BGP peer %s doesn't handle IPv6 prefixes updates\n", + peer->name); + } + /* next transition requires an exchange of keepalives */ bgp_send_keepalive(peer); - - /* FIXME: may need to check for optional params */ } break; @@@ -1322,30 -994,10 +1320,30 @@@ if (notification->error_code == BGP_ERR_CEASE) { LOG(4, 0, 0, "BGP peer %s sent CEASE\n", peer->name); - bgp_restart(peer); + bgp_set_retry(peer); + return 0; + } + + if (notification->error_code == BGP_ERR_OPEN + && notification->error_subcode == BGP_ERR_OPN_UNSUP_PARAM) + { + LOG(4, 0, 0, "BGP peer %s doesn't support BGP Capabilities\n", peer->name); + peer->mp_handling = DoesntHandleIPv6Routes; + bgp_set_retry(peer); return 0; } + if (notification->error_code == BGP_ERR_OPEN + && notification->error_subcode == BGP_ERR_OPN_UNSUP_CAP) + { + /* the only capability we advertise is this one, so upon receiving + an "unsupported capability" message, we disable IPv6 routes for + this peer */ + LOG(4, 0, 0, "BGP peer %s doesn't support IPv6 routes advertisement\n", peer->name); + peer->mp_handling = DoesntHandleIPv6Routes; + break; + } + /* FIXME: should handle more notifications */ LOG(4, 0, 0, "BGP peer %s sent unhandled NOTIFICATION %d\n", peer->name, (int) notification->error_code); @@@ -1376,9 -1028,6 +1374,9 @@@ static int bgp_send_open(struct bgp_peer *peer) { struct bgp_data_open data; + struct bgp_mp_cap_param mp_ipv6 = { htons(BGP_MP_AFI_IPv6), 0, BGP_MP_SAFI_UNICAST }; + struct bgp_capability cap_mp_ipv6; + struct bgp_opt_param param_cap_mp_ipv6; uint16_t len = sizeof(peer->outbuf->packet.header); memset(peer->outbuf->packet.header.marker, 0xff, @@@ -1389,35 -1038,11 +1387,35 @@@ data.version = BGP_VERSION; data.as = htons(our_as); data.hold_time = htons(peer->hold); - data.identifier = my_address; - data.opt_len = 0; + /* use the source IP we use as identifier, if available */ + if (peer->source_addr != INADDR_ANY) + data.identifier = peer->source_addr; + else + data.identifier = my_address; + + /* if we know peer doesn't support MP (mp_handling == DoesntHandleIPv6Routes) + then don't add this parameter */ + if (config->ipv6_prefix.s6_addr[0] + && (peer->mp_handling == HandlingUnknown + || peer->mp_handling == HandleIPv6Routes)) + { + /* construct the param and capability */ + cap_mp_ipv6.code = BGP_CAP_CODE_MP; + cap_mp_ipv6.len = sizeof(mp_ipv6); + memcpy(&cap_mp_ipv6.value, &mp_ipv6, cap_mp_ipv6.len); + + param_cap_mp_ipv6.type = BGP_PARAM_TYPE_CAPABILITY; + param_cap_mp_ipv6.len = 2 + sizeof(mp_ipv6); + memcpy(¶m_cap_mp_ipv6.value, &cap_mp_ipv6, param_cap_mp_ipv6.len); + + data.opt_len = 2 + param_cap_mp_ipv6.len; + memcpy(&data.opt_params, ¶m_cap_mp_ipv6, data.opt_len); + } + else + data.opt_len = 0; - memcpy(peer->outbuf->packet.data, &data, BGP_DATA_OPEN_SIZE); - len += BGP_DATA_OPEN_SIZE; + memcpy(peer->outbuf->packet.data, &data, BGP_DATA_OPEN_SIZE + data.opt_len); + len += BGP_DATA_OPEN_SIZE + data.opt_len; peer->outbuf->packet.header.len = htons(len); peer->outbuf->done = 0; @@@ -1584,179 -1209,6 +1582,179 @@@ static int bgp_send_update(struct bgp_p return bgp_write(peer); } +/* send/buffer UPDATE message for IPv6 routes */ +static int bgp_send_update6(struct bgp_peer *peer) +{ + uint16_t attr_len; + uint16_t unreach_len = 0; + char *unreach_len_pos; + uint8_t reach_len; + uint16_t len = sizeof(peer->outbuf->packet.header); + struct bgp_route6_list *have = peer->routes6; + struct bgp_route6_list *want = peer->routing ? bgp_routes6 : 0; + struct bgp_route6_list *e = 0; + struct bgp_route6_list *add = 0; + int s; + char ipv6addr[INET6_ADDRSTRLEN]; + + char *data = (char *) &peer->outbuf->packet.data; + + /* need leave room for attr_len, bgp_path_attrs and one prefix */ + char *max = (char *) &peer->outbuf->packet.data + + sizeof(peer->outbuf->packet.data) + - sizeof(attr_len) - peer->path_attr_len_without_nexthop + - BGP_PATH_ATTR_MP_REACH_NLRI_PARTIAL_SIZE - sizeof(struct bgp_ip6_prefix); + + memset(peer->outbuf->packet.header.marker, 0xff, + sizeof(peer->outbuf->packet.header.marker)); + + peer->outbuf->packet.header.type = BGP_MSG_UPDATE; + + /* insert non-MP unfeasible routes length */ + memcpy(data, &unreach_len, sizeof(unreach_len)); + /* skip over it and attr_len too; it will be filled when known */ + data += sizeof(unreach_len) + sizeof(attr_len); + len += sizeof(unreach_len) + sizeof(attr_len); + + /* copy usual attributes */ + memcpy(data, peer->path_attrs, peer->path_attr_len_without_nexthop); + data += peer->path_attr_len_without_nexthop; + attr_len = peer->path_attr_len_without_nexthop; + + /* copy MP unreachable NLRI heading */ + memcpy(data, peer->mp_unreach_nlri_partial, + BGP_PATH_ATTR_MP_UNREACH_NLRI_PARTIAL_SIZE); + /* remember where to update this attr len */ + unreach_len_pos = data + 2; + data += BGP_PATH_ATTR_MP_UNREACH_NLRI_PARTIAL_SIZE; + attr_len += BGP_PATH_ATTR_MP_UNREACH_NLRI_PARTIAL_SIZE; + + peer->update_routes6 = 0; /* tentatively clear */ + + /* find differences */ + while ((have || want) && data < (max - sizeof(struct bgp_ip6_prefix))) + { + if (have) + s = want + ? memcmp(&have->dest, &want->dest, sizeof(have->dest)) + : -1; + else + s = 1; + + if (s < 0) /* found one to delete */ + { + struct bgp_route6_list *tmp = have; + have = have->next; + + s = BGP_IP_PREFIX_SIZE(tmp->dest); + memcpy(data, &tmp->dest, s); + data += s; + unreach_len += s; + attr_len += s; + + LOG(5, 0, 0, "Withdrawing route %s/%d from BGP peer %s\n", + inet_ntop(AF_INET6, &tmp->dest.prefix, ipv6addr, INET6_ADDRSTRLEN), + tmp->dest.len, peer->name); + + free(tmp); + + if (e) + e->next = have; + else + peer->routes6 = have; + } + else + { + if (!s) /* same */ + { + e = have; /* stash the last found to relink above */ + have = have->next; + want = want->next; + } + else if (s > 0) /* addition reqd. */ + { + if (add) + { + peer->update_routes6 = 1; /* only one add per packet */ + if (!have) + break; + } + else + add = want; + + if (want) + want = want->next; + } + } + } + + if (have || want) + peer->update_routes6 = 1; /* more to do */ + + /* anything changed? */ + if (!(unreach_len || add)) + return 1; + + if (unreach_len) + { + /* go back and insert MP unreach_len */ + unreach_len += sizeof(struct bgp_attr_mp_unreach_nlri_partial); + unreach_len = htons(unreach_len); + memcpy(unreach_len_pos, &unreach_len, sizeof(unreach_len)); + } + else + { + /* we can remove this attribute, then */ + data -= BGP_PATH_ATTR_MP_UNREACH_NLRI_PARTIAL_SIZE; + attr_len -= BGP_PATH_ATTR_MP_UNREACH_NLRI_PARTIAL_SIZE; + } + + if (add) + { + if (!(e = malloc(sizeof(*e)))) + { + LOG(0, 0, 0, "Can't allocate route for %s/%d (%s)\n", + inet_ntop(AF_INET6, &add->dest.prefix, ipv6addr, INET6_ADDRSTRLEN), + add->dest.len, strerror(errno)); + + return 0; + } + + memcpy(e, add, sizeof(*e)); + e->next = 0; + peer->routes6 = bgp_insert_route6(peer->routes6, e); + + /* copy MP reachable NLRI heading */ + memcpy(data, peer->mp_reach_nlri_partial, + BGP_PATH_ATTR_MP_REACH_NLRI_PARTIAL_SIZE); + /* with proper len */ + reach_len = BGP_IP_PREFIX_SIZE(add->dest); + data[2] = sizeof(struct bgp_attr_mp_reach_nlri_partial) + reach_len; + data += BGP_PATH_ATTR_MP_REACH_NLRI_PARTIAL_SIZE; + attr_len += BGP_PATH_ATTR_MP_REACH_NLRI_PARTIAL_SIZE; + + memcpy(data, &add->dest, reach_len); + data += reach_len; + attr_len += reach_len; + + LOG(5, 0, 0, "Advertising route %s/%d to BGP peer %s\n", + inet_ntop(AF_INET6, &add->dest.prefix, ipv6addr, INET6_ADDRSTRLEN), + add->dest.len, peer->name); + } + + /* update len with attributes we added */ + len += attr_len; + + /* go back and insert attr_len */ + attr_len = htons(attr_len); + memcpy((char *)&peer->outbuf->packet.data + 2, &attr_len, sizeof(attr_len)); + + peer->outbuf->packet.header.len = htons(len); + peer->outbuf->done = 0; + + return bgp_write(peer); +} + /* send/buffer NOTIFICATION message */ static int bgp_send_notification(struct bgp_peer *peer, uint8_t code, uint8_t subcode) diff --combined bgp.h index bc5a0e9,8540375..8e636ab --- a/bgp.h +++ b/bgp.h @@@ -1,5 -1,5 +1,5 @@@ /* BGPv4 (RFC1771) */ - /* $Id: bgp.h,v 1.5 2005/06/04 15:42:35 bodea Exp $ */ + /* $Id: bgp.h,v 1.5 2005-06-04 15:42:35 bodea Exp $ */ #ifndef __BGP_H__ #define __BGP_H__ @@@ -43,51 -43,11 +43,51 @@@ struct bgp_data_open char opt_params[sizeof(((struct bgp_packet *)0)->data) - BGP_DATA_OPEN_SIZE]; /* variable */ } __attribute__ ((packed)); +struct bgp_opt_param { + uint8_t type; + uint8_t len; +#define BGP_MAX_OPT_PARAM_SIZE 256 + char value[BGP_MAX_OPT_PARAM_SIZE]; +} __attribute__ ((packed)); + +#define BGP_PARAM_TYPE_CAPABILITY 2 +struct bgp_capability { + uint8_t code; + uint8_t len; +#define BGP_MAX_CAPABILITY_SIZE 256 + char value[BGP_MAX_CAPABILITY_SIZE]; +} __attribute__ ((packed)); + +/* RFC4760 Multiprotocol extension */ +#define BGP_CAP_CODE_MP 1 + +struct bgp_mp_cap_param { + uint16_t afi; /* sa_family_t */ + uint8_t reserved; /* SHOULD be 0 */ + uint8_t safi; +} __attribute__ ((packed)); + +/* bgp_mp_cap_param.afi */ +#define BGP_MP_AFI_RESERVED 0 +#define BGP_MP_AFI_IPv4 1 +#define BGP_MP_AFI_IPv6 2 +/* bgp_mp_cap_param.safi */ +#define BGP_MP_SAFI_UNICAST 1 +#define BGP_MP_SAFI_MULTICAST 2 + +struct bgp_ip6_prefix { + uint8_t len; + uint8_t prefix[16]; /* variable */ +} __attribute__ ((packed)); + +/* end of RFC4760 specific definitions */ + struct bgp_ip_prefix { uint8_t len; uint32_t prefix; /* variable */ } __attribute__ ((packed)); +/* works for both IPv4 and IPv6 prefixes */ #define BGP_IP_PREFIX_SIZE(p) (1 + ((p).len / 8) + ((p).len % 8 != 0)) struct bgp_path_attr { @@@ -105,22 -65,6 +105,22 @@@ } data; /* variable */ } __attribute__ ((packed)); +struct bgp_attr_mp_reach_nlri_partial { + uint16_t afi; /* sa_family_t */ + uint8_t safi; + uint8_t next_hop_len; + uint8_t next_hop[16]; + uint8_t reserved; +} __attribute__ ((packed)); +#define BGP_PATH_ATTR_MP_REACH_NLRI_PARTIAL_SIZE (3 + sizeof(struct bgp_attr_mp_reach_nlri_partial)) + +struct bgp_attr_mp_unreach_nlri_partial { + uint16_t afi; /* sa_family_t */ + uint8_t safi; +} __attribute__ ((packed)); +/* we use it as an extended attribute */ +#define BGP_PATH_ATTR_MP_UNREACH_NLRI_PARTIAL_SIZE (4 + sizeof(struct bgp_attr_mp_unreach_nlri_partial)) + /* bgp_path_attr.flags (bitfields) */ #define BGP_PATH_ATTR_FLAG_OPTIONAL (1 << 7) #define BGP_PATH_ATTR_FLAG_TRANS (1 << 6) @@@ -141,11 -85,9 +141,11 @@@ #define BGP_PATH_ATTR_CODE_ATOMIC_AGGREGATE 6 /* well-known, discretionary */ #define BGP_PATH_ATTR_CODE_AGGREGATOR 7 /* optional, transitive */ #define BGP_PATH_ATTR_CODE_COMMUNITIES 8 /* optional, transitive (RFC1997) */ +#define BGP_PATH_ATTR_CODE_MP_REACH_NLRI 14 /* optional, non-transitive (RFC4760) */ +#define BGP_PATH_ATTR_CODE_MP_UNREACH_NLRI 15 /* optional, non-transitive (RFC4760) */ #define BGP_PATH_ATTR_SIZE(p) ((((p).flags & BGP_PATH_ATTR_FLAG_EXTLEN) \ - ? ((p).data.e.len + 1) : (p).data.s.len) + 3) + ? ((p).data.e.len + 4) : (p).data.s.len) + 3) /* well known COMMUNITIES */ #define BGP_COMMUNITY_NO_EXPORT 0xffffff01 /* don't advertise outside confederation */ @@@ -159,7 -101,6 +159,7 @@@ struct bgp_data_notification } __attribute__ ((packed)); /* bgp_data_notification.error_code, .error_subcode */ +#define BGP_ERR_UNSPEC 0 #define BGP_ERR_HEADER 1 # define BGP_ERR_HDR_NOT_SYNC 1 # define BGP_ERR_HDR_BAD_LEN 2 @@@ -171,7 -112,6 +171,7 @@@ # define BGP_ERR_OPN_UNSUP_PARAM 4 # define BGP_ERR_OPN_AUTH_FAILURE 5 # define BGP_ERR_OPN_HOLD_TIME 6 +# define BGP_ERR_OPN_UNSUP_CAP 7 #define BGP_ERR_UPDATE 3 # define BGP_ERR_UPD_BAD_ATTR_LIST 1 # define BGP_ERR_UPD_UNKN_WK_ATTR 2 @@@ -198,11 -138,6 +198,11 @@@ enum bgp_state Established, /* established */ }; +struct bgp_route6_list { + struct bgp_ip6_prefix dest; + struct bgp_route6_list *next; +}; + struct bgp_route_list { struct bgp_ip_prefix dest; struct bgp_route_list *next; @@@ -213,17 -148,10 +213,17 @@@ struct bgp_buf size_t done; /* bytes sent/recvd */ }; +enum bgp_mp_handling { + HandleIPv6Routes, + DoesntHandleIPv6Routes, + HandlingUnknown, +}; + /* state */ struct bgp_peer { char name[32]; /* peer name */ in_addr_t addr; /* peer address */ + in_addr_t source_addr; /* our source address */ int as; /* AS number */ int sock; enum bgp_state state; /* FSM state */ @@@ -245,14 -173,8 +245,14 @@@ int cli_flag; /* updates requested from CLI */ char *path_attrs; /* path attrs to send in UPDATE message */ int path_attr_len; /* length of path attrs */ + int path_attr_len_without_nexthop; /* length of path attrs without NEXT_HOP */ uint32_t events; /* events to poll */ struct event_data edata; /* poll data */ + enum bgp_mp_handling mp_handling; /* how it handles IPv6 routes advertisements */ + int update_routes6; /* UPDATE required for IPv6 routes */ + struct bgp_route6_list *routes6; /* IPv6 routes known by this peer */ + char mp_reach_nlri_partial[BGP_PATH_ATTR_MP_REACH_NLRI_PARTIAL_SIZE]; + char mp_unreach_nlri_partial[BGP_PATH_ATTR_MP_UNREACH_NLRI_PARTIAL_SIZE]; }; /* bgp_peer.cli_flag */ @@@ -266,21 -188,16 +266,19 @@@ extern int bgp_configured /* actions */ int bgp_setup(int as); int bgp_start(struct bgp_peer *peer, char *name, int as, int keepalive, - int hold, int enable); + int hold, struct in_addr update_source, int enable); void bgp_stop(struct bgp_peer *peer); void bgp_halt(struct bgp_peer *peer); int bgp_restart(struct bgp_peer *peer); -int bgp_add_route(in_addr_t ip, in_addr_t mask); -int bgp_del_route(in_addr_t ip, in_addr_t mask); +int bgp_add_route(in_addr_t ip, int prefixlen); +int bgp_add_route6(struct in6_addr ip, int prefixlen); +int bgp_del_route(in_addr_t ip, int prefixlen); +int bgp_del_route6(struct in6_addr ip, int prefixlen); void bgp_enable_routing(int enable); int bgp_set_poll(void); int bgp_process(uint32_t events[]); +void bgp_process_peers_timers(); char const *bgp_state_str(enum bgp_state state); - extern char const *cvs_id_bgp; - #endif /* __BGP_H__ */ diff --combined cli.c index 25ba34f,1149815..3f63413 --- a/cli.c +++ b/cli.c @@@ -1,9 -1,6 +1,6 @@@ // L2TPNS Command Line Interface // vim: sw=8 ts=8 - char const *cvs_name = "$Name: $"; - char const *cvs_id_cli = "$Id: cli.c,v 1.76 2006/12/18 12:08:28 bodea Exp $"; - #include #include #include @@@ -133,14 -130,20 +130,14 @@@ static int cmd_show_access_list(struct /* match if b is a substr of a */ #define MATCH(a,b) (!strncmp((a), (b), strlen(b))) -void init_cli(char *hostname) +void init_cli() { FILE *f; char buf[4096]; struct cli_command *c; struct cli_command *c2; - int on = 1; - struct sockaddr_in addr; cli = cli_init(); - if (hostname && *hostname) - cli_set_hostname(cli, hostname); - else - cli_set_hostname(cli, "l2tpns"); c = cli_register_command(cli, NULL, "show", NULL, PRIVILEGE_UNPRIVILEGED, MODE_EXEC, NULL); cli_register_command(cli, c, "banana", cmd_show_banana, PRIVILEGE_UNPRIVILEGED, MODE_EXEC, "Show a banana"); @@@ -266,17 -269,6 +263,17 @@@ } fclose(f); } +} + +void cli_init_complete(char *hostname) +{ + int on = 1; + struct sockaddr_in addr; + + if (hostname && *hostname) + cli_set_hostname(cli, hostname); + else + cli_set_hostname(cli, "l2tpns"); memset(&addr, 0, sizeof(addr)); clifd = socket(PF_INET, SOCK_STREAM, IPPROTO_TCP); @@@ -288,22 -280,13 +285,22 @@@ fcntl(clifd, F_SETFL, flags | O_NONBLOCK); } addr.sin_family = AF_INET; + addr.sin_addr.s_addr = config->cli_bind_address; /* defaults to INADDR_ANY */ addr.sin_port = htons(23); if (bind(clifd, (void *) &addr, sizeof(addr)) < 0) + { + LOG(0, 0, 0, "Error binding cli on port 23: %s\n", strerror(errno)); + close(clifd); + clifd = -1; + return; + } + if (listen(clifd, 10) < 0) { LOG(0, 0, 0, "Error listening on cli port 23: %s\n", strerror(errno)); + close(clifd); + clifd = -1; return; } - listen(clifd, 10); } void cli_do(int sockfd) @@@ -457,14 -440,6 +454,14 @@@ static int cmd_show_session(struct cli_ if (session[s].idle_timeout) cli_print(cli, "\tIdle Timeout:\t%u seconds", session[s].idle_timeout - (session[s].last_data ? abs(time_now - session[s].last_data) : 0)); + if (session[s].timeout) + { + cli_print(cli, "\tRemaining time:\t%u", + (session[s].bundle && bundle[session[s].bundle].num_of_links > 1) + ? (unsigned) (session[s].timeout - bundle[session[s].bundle].online_time) + : (unsigned) (session[s].timeout - (time_now - session[s].opened))); + } + cli_print(cli, "\tBytes In/Out:\t%u/%u", session[s].cout, session[s].cin); cli_print(cli, "\tPkts In/Out:\t%u/%u", session[s].pout, session[s].pin); cli_print(cli, "\tMRU:\t\t%d", session[s].mru); @@@ -532,7 -507,7 +529,7 @@@ } // Show Summary - cli_print(cli, "%5s %4s %-32s %-15s %s %s %s %s %10s %10s %10s %4s %-15s %s", + cli_print(cli, "%5s %4s %-32s %-15s %s %s %s %s %10s %10s %10s %4s %10s %-15s %s", "SID", "TID", "Username", @@@ -545,20 -520,13 +542,20 @@@ "downloaded", "uploaded", "idle", + "Rem.Time", "LAC", "CLI"); for (i = 1; i < MAXSESSION; i++) { + uint32_t rem_time; if (!session[i].opened) continue; - cli_print(cli, "%5d %4d %-32s %-15s %s %s %s %s %10u %10lu %10lu %4u %-15s %s", + if (session[i].bundle && bundle[session[i].bundle].num_of_links > 1) + rem_time = session[i].timeout ? (session[i].timeout - bundle[session[i].bundle].online_time) : 0; + else + rem_time = session[i].timeout ? (session[i].timeout - (time_now-session[i].opened)) : 0; + + cli_print(cli, "%5d %4d %-32s %-15s %s %s %s %s %10u %10lu %10lu %4u %10lu %-15s %s", i, session[i].tunnel, session[i].user[0] ? session[i].user : "*", @@@ -571,7 -539,6 +568,7 @@@ (unsigned long)session[i].cout, (unsigned long)session[i].cin, abs(time_now - (session[i].last_packet ? session[i].last_packet : time_now)), + (unsigned long)(rem_time), fmtaddr(htonl(tunnel[ session[i].tunnel ].ip), 1), session[i].calling[0] ? session[i].calling : "*"); } @@@ -824,72 -791,10 +821,10 @@@ static int cmd_clear_counters(struct cl static int cmd_show_version(struct cli_def *cli, char *command, char **argv, int argc) { - int tag = 0; - int file = 0; - int i = 0; - if (CLI_HELP_REQUESTED) - return cli_arg_help(cli, 1, - "tag", "Include CVS release tag", - "file", "Include file versions", - NULL); - - for (i = 0; i < argc; i++) - if (!strcmp(argv[i], "tag")) - tag++; - else if (!strcmp(argv[i], "file")) - file++; + return CLI_HELP_NO_ARGS; cli_print(cli, "L2TPNS %s", VERSION); - if (tag) - { - char const *p = strchr(cvs_name, ':'); - char const *e; - if (p) - { - p++; - while (isspace(*p)) - p++; - } - - if (!p || *p == '$') - p = "HEAD"; - - e = strpbrk(p, " \t$"); - cli_print(cli, "Tag: %.*s", (int) (e ? e - p + 1 : strlen(p)), p); - } - - if (file) - { - extern linked_list *loaded_plugins; - void *p; - - cli_print(cli, "Files:"); - cli_print(cli, " %s", cvs_id_arp); - #ifdef BGP - cli_print(cli, " %s", cvs_id_bgp); - #endif /* BGP */ - cli_print(cli, " %s", cvs_id_cli); - cli_print(cli, " %s", cvs_id_cluster); - cli_print(cli, " %s", cvs_id_constants); - cli_print(cli, " %s", cvs_id_control); - cli_print(cli, " %s", cvs_id_icmp); - cli_print(cli, " %s", cvs_id_l2tpns); - cli_print(cli, " %s", cvs_id_ll); - cli_print(cli, " %s", cvs_id_ppp); - cli_print(cli, " %s", cvs_id_radius); - cli_print(cli, " %s", cvs_id_tbf); - cli_print(cli, " %s", cvs_id_util); - - ll_reset(loaded_plugins); - while ((p = ll_next(loaded_plugins))) - { - char const **id = dlsym(p, "cvs_id"); - if (id) - cli_print(cli, " %s", *id); - } - } - return CLI_OK; } @@@ -1052,11 -957,6 +987,11 @@@ static int cmd_show_run(struct cli_def h = BGP_HOLD_TIME; cli_print(cli, " neighbour %s timers %d %d", config->neighbour[i].name, k, h); + + if (config->neighbour[i].update_source.s_addr != INADDR_ANY) + cli_print(cli, " neighbour %s update-source %s", + config->neighbour[i].name, + inet_ntoa(config->neighbour[i].update_source)); } } #endif @@@ -2083,7 -1983,6 +2018,7 @@@ static int cmd_router_bgp_neighbour(str return cli_arg_help(cli, 0, "remote-as", "Set remote autonomous system number", "timers", "Set timers", + "update-source", "Set source address to use for the BGP session", NULL); default: @@@ -2102,9 -2001,6 +2037,9 @@@ return cli_arg_help(cli, 1, NULL); } + if (MATCH("update-source", argv[1])) + return cli_arg_help(cli, argc > 3, "A.B.C.D", "Source IP address", NULL); + return CLI_OK; } } @@@ -2141,33 -2037,12 +2076,33 @@@ snprintf(config->neighbour[i].name, sizeof(config->neighbour[i].name), "%s", argv[0]); config->neighbour[i].keepalive = -1; config->neighbour[i].hold = -1; + config->neighbour[i].update_source.s_addr = INADDR_ANY; } config->neighbour[i].as = as; return CLI_OK; } + if (MATCH("update-source", argv[1])) + { + struct in_addr addr; + + if (!config->neighbour[i].name[0]) + { + cli_error(cli, "Specify remote-as first"); + return CLI_OK; + } + + if (!inet_aton(argv[2], &addr)) + { + cli_error(cli, "Cannot parse IP \"%s\"", argv[2]); + return CLI_OK; + } + + config->neighbour[i].update_source = addr; + return CLI_OK; + } + if (argc != 4 || !MATCH("timers", argv[1])) { cli_error(cli, "Invalid arguments"); diff --combined l2tpns.c index 3488002,394a323..0721f5c --- a/l2tpns.c +++ b/l2tpns.c @@@ -4,8 -4,6 +4,6 @@@ // Copyright (c) 2002 FireBrick (Andrews & Arnold Ltd / Watchfront Ltd) - GPL licenced // vim: sw=8 ts=8 - char const *cvs_id_l2tpns = "$Id: l2tpns.c,v 1.176 2011/01/20 12:48:40 bodea Exp $"; - #include #include #include @@@ -14,6 -12,7 +12,6 @@@ #define SYSLOG_NAMES #include #include -#include #include #include #include @@@ -30,7 -29,7 +28,7 @@@ #include #include #include -#include +#include #include #include #include @@@ -38,8 -37,6 +36,8 @@@ #include #include #include +#include +#include #include "md5.h" #include "l2tpns.h" @@@ -57,7 -54,6 +55,7 @@@ // Globals configt *config = NULL; // all configuration +int nlfd = -1; // netlink socket int tunfd = -1; // tun interface file handle. (network device) int udpfd = -1; // UDP file handle int controlfd = -1; // Control signal handle @@@ -65,14 -61,14 +63,14 @@@ int clifd = -1; // Socket listening f int daefd = -1; // Socket listening for DAE connections. int snoopfd = -1; // UDP file handle for sending out intercept data int *radfds = NULL; // RADIUS requests file handles -int ifrfd = -1; // File descriptor for routing, etc -int ifr6fd = -1; // File descriptor for IPv6 routing, etc int rand_fd = -1; // Random data source int cluster_sockfd = -1; // Intra-cluster communications socket. int epollfd = -1; // event polling time_t basetime = 0; // base clock -char hostname[1000] = ""; // us. +char hostname[MAXHOSTNAME] = ""; // us. static int tunidx; // ifr_ifindex of tun device +int nlseqnum = 0; // netlink sequence number +int min_initok_nlseqnum = 0; // minimun seq number for messages after init is ok static int syslog_log = 0; // are we logging to syslog static FILE *log_stream = 0; // file handle for direct logging (i.e. direct into file, not via syslog). uint32_t last_id = 0; // Unique ID for radius accounting @@@ -159,10 -155,6 +157,10 @@@ config_descriptt config_values[] = CONFIG("cluster_hb_timeout", cluster_hb_timeout, INT), CONFIG("cluster_master_min_adv", cluster_master_min_adv, INT), CONFIG("ipv6_prefix", ipv6_prefix, IPv6), + CONFIG("cli_bind_address", cli_bind_address, IPv4), + CONFIG("hostname", hostname, STRING), + CONFIG("nexthop_address", nexthop_address, IPv4), + CONFIG("nexthop6_address", nexthop6_address, IPv6), { NULL, 0, 0, 0 }, }; @@@ -170,6 -162,8 +168,6 @@@ static char *plugin_functions[] = NULL, "plugin_pre_auth", "plugin_post_auth", - "plugin_packet_rx", - "plugin_packet_tx", "plugin_timer", "plugin_new_session", "plugin_kill_session", @@@ -201,8 -195,6 +199,8 @@@ struct Tstats *_statistics = NULL struct Tringbuffer *ringbuffer = NULL; #endif +static ssize_t netlink_send(struct nlmsghdr *nh); +static void netlink_addattr(struct nlmsghdr *nh, int type, const void *data, int alen); static void cache_ipmap(in_addr_t ip, sessionidt s); static void uncache_ipmap(in_addr_t ip); static void cache_ipv6map(struct in6_addr ip, int prefixlen, sessionidt s); @@@ -422,65 -414,43 +420,65 @@@ void random_data(uint8_t *buf, int len // via BGP if enabled, and stuffs it into the // 'sessionbyip' cache. // -// 'ip' and 'mask' must be in _host_ order. +// 'ip' must be in _host_ order. // -static void routeset(sessionidt s, in_addr_t ip, in_addr_t mask, in_addr_t gw, int add) +static void routeset(sessionidt s, in_addr_t ip, int prefixlen, in_addr_t gw, int add) { - struct rtentry r; + struct { + struct nlmsghdr nh; + struct rtmsg rt; + char buf[32]; + } req; int i; + in_addr_t n_ip; - if (!mask) mask = 0xffffffff; + if (!prefixlen) prefixlen = 32; - ip &= mask; // Force the ip to be the first one in the route. + ip &= 0xffffffff << (32 - prefixlen);; // Force the ip to be the first one in the route. - memset(&r, 0, sizeof(r)); - r.rt_dev = config->tundevice; - r.rt_dst.sa_family = AF_INET; - *(uint32_t *) & (((struct sockaddr_in *) &r.rt_dst)->sin_addr.s_addr) = htonl(ip); - r.rt_gateway.sa_family = AF_INET; - *(uint32_t *) & (((struct sockaddr_in *) &r.rt_gateway)->sin_addr.s_addr) = htonl(gw); - r.rt_genmask.sa_family = AF_INET; - *(uint32_t *) & (((struct sockaddr_in *) &r.rt_genmask)->sin_addr.s_addr) = htonl(mask); - r.rt_flags = (RTF_UP | RTF_STATIC); + memset(&req, 0, sizeof(req)); + + if (add) + { + req.nh.nlmsg_type = RTM_NEWROUTE; + req.nh.nlmsg_flags = NLM_F_REQUEST | NLM_F_CREATE | NLM_F_REPLACE; + } + else + { + req.nh.nlmsg_type = RTM_DELROUTE; + req.nh.nlmsg_flags = NLM_F_REQUEST; + } + + req.nh.nlmsg_len = NLMSG_LENGTH(sizeof(req.rt)); + + req.rt.rtm_family = AF_INET; + req.rt.rtm_dst_len = prefixlen; + req.rt.rtm_table = RT_TABLE_MAIN; + req.rt.rtm_protocol = 42; + req.rt.rtm_scope = RT_SCOPE_LINK; + req.rt.rtm_type = RTN_UNICAST; + + netlink_addattr(&req.nh, RTA_OIF, &tunidx, sizeof(int)); + n_ip = htonl(ip); + netlink_addattr(&req.nh, RTA_DST, &n_ip, sizeof(n_ip)); if (gw) - r.rt_flags |= RTF_GATEWAY; - else if (mask == 0xffffffff) - r.rt_flags |= RTF_HOST; + { + n_ip = htonl(gw); + netlink_addattr(&req.nh, RTA_GATEWAY, &n_ip, sizeof(n_ip)); + } - LOG(1, s, 0, "Route %s %s/%s%s%s\n", add ? "add" : "del", - fmtaddr(htonl(ip), 0), fmtaddr(htonl(mask), 1), + LOG(1, s, session[s].tunnel, "Route %s %s/%d%s%s\n", add ? "add" : "del", + fmtaddr(htonl(ip), 0), prefixlen, gw ? " via" : "", gw ? fmtaddr(htonl(gw), 2) : ""); - if (ioctl(ifrfd, add ? SIOCADDRT : SIOCDELRT, (void *) &r) < 0) - LOG(0, 0, 0, "routeset() error in ioctl: %s\n", strerror(errno)); + if (netlink_send(&req.nh) < 0) + LOG(0, 0, 0, "routeset() error in sending netlink message: %s\n", strerror(errno)); #ifdef BGP if (add) - bgp_add_route(htonl(ip), htonl(mask)); + bgp_add_route(htonl(ip), prefixlen); else - bgp_del_route(htonl(ip), htonl(mask)); + bgp_del_route(htonl(ip), prefixlen); #endif /* BGP */ // Add/Remove the IPs to the 'sessionbyip' cache. @@@ -496,68 -466,40 +494,68 @@@ if (!add) // Are we deleting a route? s = 0; // Caching the session as '0' is the same as uncaching. - for (i = ip; (i&mask) == (ip&mask) ; ++i) + for (i = ip; i < ip+(1<<(32-prefixlen)) ; ++i) cache_ipmap(i, s); } } void route6set(sessionidt s, struct in6_addr ip, int prefixlen, int add) { - struct in6_rtmsg rt; + struct { + struct nlmsghdr nh; + struct rtmsg rt; + char buf[64]; + } req; + int metric; char ipv6addr[INET6_ADDRSTRLEN]; - if (ifr6fd < 0) + if (!config->ipv6_prefix.s6_addr[0]) { LOG(0, 0, 0, "Asked to set IPv6 route, but IPv6 not setup.\n"); return; } - memset(&rt, 0, sizeof(rt)); + memset(&req, 0, sizeof(req)); + + if (add) + { + req.nh.nlmsg_type = RTM_NEWROUTE; + req.nh.nlmsg_flags = NLM_F_REQUEST | NLM_F_CREATE | NLM_F_REPLACE; + } + else + { + req.nh.nlmsg_type = RTM_DELROUTE; + req.nh.nlmsg_flags = NLM_F_REQUEST; + } + + req.nh.nlmsg_len = NLMSG_LENGTH(sizeof(req.rt)); - memcpy(&rt.rtmsg_dst, &ip, sizeof(struct in6_addr)); - rt.rtmsg_dst_len = prefixlen; - rt.rtmsg_metric = 1; - rt.rtmsg_flags = RTF_UP; - rt.rtmsg_ifindex = tunidx; + req.rt.rtm_family = AF_INET6; + req.rt.rtm_dst_len = prefixlen; + req.rt.rtm_table = RT_TABLE_MAIN; + req.rt.rtm_protocol = 42; + req.rt.rtm_scope = RT_SCOPE_LINK; + req.rt.rtm_type = RTN_UNICAST; - LOG(1, 0, 0, "Route %s %s/%d\n", + netlink_addattr(&req.nh, RTA_OIF, &tunidx, sizeof(int)); + netlink_addattr(&req.nh, RTA_DST, &ip, sizeof(ip)); + metric = 1; + netlink_addattr(&req.nh, RTA_METRICS, &metric, sizeof(metric)); + + LOG(1, s, session[s].tunnel, "Route %s %s/%d\n", add ? "add" : "del", inet_ntop(AF_INET6, &ip, ipv6addr, INET6_ADDRSTRLEN), prefixlen); - if (ioctl(ifr6fd, add ? SIOCADDRT : SIOCDELRT, (void *) &rt) < 0) - LOG(0, 0, 0, "route6set() error in ioctl: %s\n", - strerror(errno)); + if (netlink_send(&req.nh) < 0) + LOG(0, 0, 0, "route6set() error in sending netlink message: %s\n", strerror(errno)); - // FIXME: need to add BGP routing (RFC2858) +#ifdef BGP + if (add) + bgp_add_route6(ip, prefixlen); + else + bgp_del_route6(ip, prefixlen); +#endif /* BGP */ if (s) { @@@ -570,86 -512,12 +568,86 @@@ return; } -// defined in linux/ipv6.h, but tricky to include from user-space -// TODO: move routing to use netlink rather than ioctl -struct in6_ifreq { - struct in6_addr ifr6_addr; - __u32 ifr6_prefixlen; - unsigned int ifr6_ifindex; +// +// Set up netlink socket +static void initnetlink(void) +{ + struct sockaddr_nl nladdr; + + nlfd = socket(AF_NETLINK, SOCK_RAW, NETLINK_ROUTE); + if (nlfd < 0) + { + LOG(0, 0, 0, "Can't create netlink socket: %s\n", strerror(errno)); + exit(1); + } + + memset(&nladdr, 0, sizeof(nladdr)); + nladdr.nl_family = AF_NETLINK; + nladdr.nl_pid = getpid(); + + if (bind(nlfd, (struct sockaddr *)&nladdr, sizeof(nladdr)) < 0) + { + LOG(0, 0, 0, "Can't bind netlink socket: %s\n", strerror(errno)); + exit(1); + } +} + +static ssize_t netlink_send(struct nlmsghdr *nh) +{ + struct sockaddr_nl nladdr; + struct iovec iov; + struct msghdr msg; + + nh->nlmsg_pid = getpid(); + nh->nlmsg_seq = ++nlseqnum; + + // set kernel address + memset(&nladdr, 0, sizeof(nladdr)); + nladdr.nl_family = AF_NETLINK; + + iov = (struct iovec){ (void *)nh, nh->nlmsg_len }; + msg = (struct msghdr){ (void *)&nladdr, sizeof(nladdr), &iov, 1, NULL, 0, 0 }; + + return sendmsg(nlfd, &msg, 0); +} + +static ssize_t netlink_recv(void *buf, ssize_t len) +{ + struct sockaddr_nl nladdr; + struct iovec iov; + struct msghdr msg; + + // set kernel address + memset(&nladdr, 0, sizeof(nladdr)); + nladdr.nl_family = AF_NETLINK; + + iov = (struct iovec){ buf, len }; + msg = (struct msghdr){ (void *)&nladdr, sizeof(nladdr), &iov, 1, NULL, 0, 0 }; + + return recvmsg(nlfd, &msg, 0); +} + +/* adapted from iproute2 */ +static void netlink_addattr(struct nlmsghdr *nh, int type, const void *data, int alen) +{ + int len = RTA_LENGTH(alen); + struct rtattr *rta; + + rta = (struct rtattr *)(((void *)nh) + NLMSG_ALIGN(nh->nlmsg_len)); + rta->rta_type = type; + rta->rta_len = len; + memcpy(RTA_DATA(rta), data, alen); + nh->nlmsg_len = NLMSG_ALIGN(nh->nlmsg_len) + RTA_ALIGN(len); +} + +// messages corresponding to different phases seq number +static char *tun_nl_phase_msg[] = { + "initialized", + "getting tun interface index", + "setting tun interface parameters", + "setting tun IPv4 address", + "setting tun LL IPv6 address", + "setting tun global IPv6 address", }; // @@@ -657,7 -525,8 +655,7 @@@ static void inittun(void) { struct ifreq ifr; - struct in6_ifreq ifr6; - struct sockaddr_in sin = {0}; + memset(&ifr, 0, sizeof(ifr)); ifr.ifr_flags = IFF_TUN; @@@ -676,136 -545,75 +674,136 @@@ LOG(0, 0, 0, "Can't set tun interface: %s\n", strerror(errno)); exit(1); } - assert(strlen(ifr.ifr_name) < sizeof(config->tundevice)); - strncpy(config->tundevice, ifr.ifr_name, sizeof(config->tundevice) - 1); - ifrfd = socket(PF_INET, SOCK_DGRAM, IPPROTO_IP); + assert(strlen(ifr.ifr_name) < sizeof(config->tundevice) - 1); + strncpy(config->tundevice, ifr.ifr_name, sizeof(config->tundevice)); - sin.sin_family = AF_INET; - sin.sin_addr.s_addr = config->bind_address ? config->bind_address : 0x01010101; // 1.1.1.1 - memcpy(&ifr.ifr_addr, &sin, sizeof(struct sockaddr)); - - if (ioctl(ifrfd, SIOCSIFADDR, (void *) &ifr) < 0) - { - LOG(0, 0, 0, "Error setting tun address: %s\n", strerror(errno)); - exit(1); - } - /* Bump up the qlen to deal with bursts from the network */ - ifr.ifr_qlen = 1000; - if (ioctl(ifrfd, SIOCSIFTXQLEN, (void *) &ifr) < 0) - { - LOG(0, 0, 0, "Error setting tun queue length: %s\n", strerror(errno)); - exit(1); - } - /* set MTU to modem MRU */ - ifr.ifr_mtu = MRU; - if (ioctl(ifrfd, SIOCSIFMTU, (void *) &ifr) < 0) - { - LOG(0, 0, 0, "Error setting tun MTU: %s\n", strerror(errno)); - exit(1); - } - ifr.ifr_flags = IFF_UP; - if (ioctl(ifrfd, SIOCSIFFLAGS, (void *) &ifr) < 0) + tunidx = if_nametoindex(config->tundevice); + if (tunidx == 0) { - LOG(0, 0, 0, "Error setting tun flags: %s\n", strerror(errno)); + LOG(0, 0, 0, "Can't get tun interface index\n"); exit(1); } - if (ioctl(ifrfd, SIOCGIFINDEX, (void *) &ifr) < 0) + { - LOG(0, 0, 0, "Error getting tun ifindex: %s\n", strerror(errno)); - exit(1); - } - tunidx = ifr.ifr_ifindex; + struct { + // interface setting + struct nlmsghdr nh; + union { + struct ifinfomsg ifinfo; + struct ifaddrmsg ifaddr; + } ifmsg; + char rtdata[32]; // 32 should be enough + } req; + uint32_t txqlen, mtu; + in_addr_t ip; - // Only setup IPv6 on the tun device if we have a configured prefix - if (config->ipv6_prefix.s6_addr[0]) { - ifr6fd = socket(PF_INET6, SOCK_DGRAM, 0); + memset(&req, 0, sizeof(req)); - // Link local address is FE80::1 - memset(&ifr6.ifr6_addr, 0, sizeof(ifr6.ifr6_addr)); - ifr6.ifr6_addr.s6_addr[0] = 0xFE; - ifr6.ifr6_addr.s6_addr[1] = 0x80; - ifr6.ifr6_addr.s6_addr[15] = 1; - ifr6.ifr6_prefixlen = 64; - ifr6.ifr6_ifindex = ifr.ifr_ifindex; - if (ioctl(ifr6fd, SIOCSIFADDR, (void *) &ifr6) < 0) - { - LOG(0, 0, 0, "Error setting tun IPv6 link local address:" - " %s\n", strerror(errno)); - } + req.nh.nlmsg_type = RTM_NEWLINK; + req.nh.nlmsg_flags = NLM_F_REQUEST | NLM_F_MULTI; + req.nh.nlmsg_len = NLMSG_LENGTH(sizeof(req.ifmsg.ifinfo)); - // Global address is prefix::1 - memset(&ifr6.ifr6_addr, 0, sizeof(ifr6.ifr6_addr)); - ifr6.ifr6_addr = config->ipv6_prefix; - ifr6.ifr6_addr.s6_addr[15] = 1; - ifr6.ifr6_prefixlen = 64; - ifr6.ifr6_ifindex = ifr.ifr_ifindex; - if (ioctl(ifr6fd, SIOCSIFADDR, (void *) &ifr6) < 0) - { - LOG(0, 0, 0, "Error setting tun IPv6 global address: %s\n", - strerror(errno)); + req.ifmsg.ifinfo.ifi_family = AF_UNSPEC; + req.ifmsg.ifinfo.ifi_index = tunidx; + req.ifmsg.ifinfo.ifi_flags |= IFF_UP; // set interface up + req.ifmsg.ifinfo.ifi_change = IFF_UP; // only change this flag + + /* Bump up the qlen to deal with bursts from the network */ + txqlen = 1000; + netlink_addattr(&req.nh, IFLA_TXQLEN, &txqlen, sizeof(txqlen)); + /* set MTU to modem MRU */ + mtu = MRU; + netlink_addattr(&req.nh, IFLA_MTU, &mtu, sizeof(mtu)); + + if (netlink_send(&req.nh) < 0) + goto senderror; + + memset(&req, 0, sizeof(req)); + + req.nh.nlmsg_type = RTM_NEWADDR; + req.nh.nlmsg_flags = NLM_F_REQUEST | NLM_F_CREATE | NLM_F_REPLACE | NLM_F_MULTI; + req.nh.nlmsg_len = NLMSG_LENGTH(sizeof(req.ifmsg.ifaddr)); + + req.ifmsg.ifaddr.ifa_family = AF_INET; + req.ifmsg.ifaddr.ifa_prefixlen = 32; + req.ifmsg.ifaddr.ifa_scope = RT_SCOPE_UNIVERSE; + req.ifmsg.ifaddr.ifa_index = tunidx; + + if (config->bind_address) + ip = config->bind_address; + else + ip = 0x01010101; // 1.1.1.1 + netlink_addattr(&req.nh, IFA_LOCAL, &ip, sizeof(ip)); + + if (netlink_send(&req.nh) < 0) + goto senderror; + + // Only setup IPv6 on the tun device if we have a configured prefix + if (config->ipv6_prefix.s6_addr[0]) { + struct in6_addr ip6; + + memset(&req, 0, sizeof(req)); + + req.nh.nlmsg_type = RTM_NEWADDR; + req.nh.nlmsg_flags = NLM_F_REQUEST | NLM_F_CREATE | NLM_F_REPLACE | NLM_F_MULTI; + req.nh.nlmsg_len = NLMSG_LENGTH(sizeof(req.ifmsg.ifaddr)); + + req.ifmsg.ifaddr.ifa_family = AF_INET6; + req.ifmsg.ifaddr.ifa_prefixlen = 64; + req.ifmsg.ifaddr.ifa_scope = RT_SCOPE_LINK; + req.ifmsg.ifaddr.ifa_index = tunidx; + + // Link local address is FE80::1 + memset(&ip6, 0, sizeof(ip6)); + ip6.s6_addr[0] = 0xFE; + ip6.s6_addr[1] = 0x80; + ip6.s6_addr[15] = 1; + netlink_addattr(&req.nh, IFA_LOCAL, &ip6, sizeof(ip6)); + + if (netlink_send(&req.nh) < 0) + goto senderror; + + memset(&req, 0, sizeof(req)); + + req.nh.nlmsg_type = RTM_NEWADDR; + req.nh.nlmsg_flags = NLM_F_REQUEST | NLM_F_CREATE | NLM_F_REPLACE | NLM_F_MULTI; + req.nh.nlmsg_len = NLMSG_LENGTH(sizeof(req.ifmsg.ifaddr)); + + req.ifmsg.ifaddr.ifa_family = AF_INET6; + req.ifmsg.ifaddr.ifa_prefixlen = 64; + req.ifmsg.ifaddr.ifa_scope = RT_SCOPE_UNIVERSE; + req.ifmsg.ifaddr.ifa_index = tunidx; + + // Global address is prefix::1 + ip6 = config->ipv6_prefix; + ip6.s6_addr[15] = 1; + netlink_addattr(&req.nh, IFA_LOCAL, &ip6, sizeof(ip6)); + + if (netlink_send(&req.nh) < 0) + goto senderror; } + + memset(&req, 0, sizeof(req)); + + req.nh.nlmsg_type = NLMSG_DONE; + req.nh.nlmsg_len = NLMSG_LENGTH(0); + + if (netlink_send(&req.nh) < 0) + goto senderror; + + // if we get an error for seqnum < min_initok_nlseqnum, + // we must exit as initialization went wrong + if (config->ipv6_prefix.s6_addr[0]) + min_initok_nlseqnum = 5 + 1; // idx + if + addr + 2*addr6 + else + min_initok_nlseqnum = 3 + 1; // idx + if + addr } + + return; + +senderror: + LOG(0, 0, 0, "Error while setting up tun device: %s\n", strerror(errno)); + exit(1); } // set up UDP ports @@@ -1462,76 -1270,75 +1460,76 @@@ static void processipout(uint8_t *buf, return; } - // Add on L2TP header - { - bundleidt bid = 0; - if(session[s].bundle != 0 && bundle[session[s].bundle].num_of_links > 1) - { - bid = session[s].bundle; - s = bundle[bid].members[bundle[bid].current_ses = (bundle[bid].current_ses + 1) % bundle[bid].num_of_links]; - t = session[s].tunnel; - sp = &session[s]; - LOG(4, s, t, "MPPP: (1)Session number becomes: %d\n", s); - if(len > MINFRAGLEN) - { - // Partition the packet to "bundle[b].num_of_links" fragments - bundlet *b = &bundle[bid]; - uint32_t num_of_links = b->num_of_links; - uint32_t fraglen = len / num_of_links; - fraglen = (fraglen > session[s].mru ? session[s].mru : fraglen); - uint32_t last_fraglen = fraglen + len % num_of_links; - last_fraglen = (last_fraglen > session[s].mru ? len % num_of_links : last_fraglen); - uint32_t remain = len; - - // send the first packet - uint8_t *p = makeppp(fragbuf, sizeof(fragbuf), buf, fraglen, s, t, PPPIP, 0, bid, MP_BEGIN); - if (!p) return; - tunnelsend(fragbuf, fraglen + (p-fragbuf), t); // send it... - // statistics - update_session_out_stat(s, sp, fraglen); - remain -= fraglen; - while (remain > last_fraglen) - { - s = b->members[b->current_ses = (b->current_ses + 1) % num_of_links]; - t = session[s].tunnel; - sp = &session[s]; - LOG(4, s, t, "MPPP: (2)Session number becomes: %d\n", s); - p = makeppp(fragbuf, sizeof(fragbuf), buf+(len - remain), fraglen, s, t, PPPIP, 0, bid, 0); - if (!p) return; - tunnelsend(fragbuf, fraglen + (p-fragbuf), t); // send it... - update_session_out_stat(s, sp, fraglen); - remain -= fraglen; - } - // send the last fragment - s = b->members[b->current_ses = (b->current_ses + 1) % num_of_links]; + if(session[s].bundle != 0 && bundle[session[s].bundle].num_of_links > 1) + { + // Add on L2TP header + bundleidt bid = session[s].bundle; + bundlet *b = &bundle[bid]; + + b->current_ses = (b->current_ses + 1) % b->num_of_links; + s = b->members[b->current_ses]; + t = session[s].tunnel; + sp = &session[s]; + LOG(4, s, t, "MPPP: (1)Session number becomes: %d\n", s); + if(len > MINFRAGLEN) + { + // Partition the packet to "bundle[b].num_of_links" fragments + uint32_t num_of_links = b->num_of_links; + uint32_t fraglen = len / num_of_links; + fraglen = (fraglen > session[s].mru ? session[s].mru : fraglen); + uint32_t last_fraglen = fraglen + len % num_of_links; + last_fraglen = (last_fraglen > session[s].mru ? len % num_of_links : last_fraglen); + uint32_t remain = len; + + // send the first packet + uint8_t *p = makeppp(fragbuf, sizeof(fragbuf), buf, fraglen, s, t, PPPIP, 0, bid, MP_BEGIN); + if (!p) return; + tunnelsend(fragbuf, fraglen + (p-fragbuf), t); // send it... + // statistics + update_session_out_stat(s, sp, fraglen); + remain -= fraglen; + while (remain > last_fraglen) + { + b->current_ses = (b->current_ses + 1) % num_of_links; + s = b->members[b->current_ses]; t = session[s].tunnel; sp = &session[s]; - LOG(4, s, t, "MPPP: (2)Session number becomes: %d\n", s); - p = makeppp(fragbuf, sizeof(fragbuf), buf+(len - remain), remain, s, t, PPPIP, 0, bid, MP_END); - if (!p) return; - tunnelsend(fragbuf, remain + (p-fragbuf), t); // send it... - update_session_out_stat(s, sp, remain); - if (remain != last_fraglen) - LOG(3, s, t, "PROCESSIPOUT ERROR REMAIN != LAST_FRAGLEN, %d != %d\n", remain, last_fraglen); - } - else { - // Send it as one frame - uint8_t *p = makeppp(fragbuf, sizeof(fragbuf), buf, len, s, t, PPPIP, 0, bid, MP_BOTH_BITS); - if (!p) return; - tunnelsend(fragbuf, len + (p-fragbuf), t); // send it... - LOG(4, s, t, "MPPP: packet sent as one frame\n"); - update_session_out_stat(s, sp, len); - } - } - else - { - uint8_t *p = makeppp(fragbuf, sizeof(fragbuf), buf, len, s, t, PPPIP, 0, 0, 0); - if (!p) return; - tunnelsend(fragbuf, len + (p-fragbuf), t); // send it... + LOG(4, s, t, "MPPP: (2)Session number becomes: %d\n", s); + p = makeppp(fragbuf, sizeof(fragbuf), buf+(len - remain), fraglen, s, t, PPPIP, 0, bid, 0); + if (!p) return; + tunnelsend(fragbuf, fraglen + (p-fragbuf), t); // send it... + update_session_out_stat(s, sp, fraglen); + remain -= fraglen; + } + // send the last fragment + b->current_ses = (b->current_ses + 1) % num_of_links; + s = b->members[b->current_ses]; + t = session[s].tunnel; + sp = &session[s]; + LOG(4, s, t, "MPPP: (2)Session number becomes: %d\n", s); + p = makeppp(fragbuf, sizeof(fragbuf), buf+(len - remain), remain, s, t, PPPIP, 0, bid, MP_END); + if (!p) return; + tunnelsend(fragbuf, remain + (p-fragbuf), t); // send it... + update_session_out_stat(s, sp, remain); + if (remain != last_fraglen) + LOG(3, s, t, "PROCESSIPOUT ERROR REMAIN != LAST_FRAGLEN, %d != %d\n", remain, last_fraglen); + } + else { + // Send it as one frame + uint8_t *p = makeppp(fragbuf, sizeof(fragbuf), buf, len, s, t, PPPIP, 0, bid, MP_BOTH_BITS); + if (!p) return; + tunnelsend(fragbuf, len + (p-fragbuf), t); // send it... + LOG(4, s, t, "MPPP: packet sent as one frame\n"); update_session_out_stat(s, sp, len); - } - } + } + } + else + { + uint8_t *p = makeppp(fragbuf, sizeof(fragbuf), buf, len, s, t, PPPIP, 0, 0, 0); + if (!p) return; + tunnelsend(fragbuf, len + (p-fragbuf), t); // send it... + update_session_out_stat(s, sp, len); + } // Snooping this session, send it to intercept box if (sp->snoop_ip && sp->snoop_port) @@@ -1611,10 -1418,7 +1609,10 @@@ static void processipv6out(uint8_t * bu if (session[s].bundle && bundle[session[s].bundle].num_of_links > 1) { bundleidt bid = session[s].bundle; - s = bundle[bid].members[bundle[bid].current_ses = (bundle[bid].current_ses + 1) % bundle[bid].num_of_links]; + bundlet *b = &bundle[bid]; + + b->current_ses = (b->current_ses + 1) % b->num_of_links; + s = b->members[b->current_ses]; LOG(3, s, session[s].tunnel, "MPPP: Session number becomes: %u\n", s); } t = session[s].tunnel; @@@ -1714,10 -1518,10 +1712,10 @@@ static void send_ipout(sessionidt s, ui static void control16(controlt * c, uint16_t avp, uint16_t val, uint8_t m) { uint16_t l = (m ? 0x8008 : 0x0008); - *(uint16_t *) (c->buf + c->length + 0) = htons(l); - *(uint16_t *) (c->buf + c->length + 2) = htons(0); - *(uint16_t *) (c->buf + c->length + 4) = htons(avp); - *(uint16_t *) (c->buf + c->length + 6) = htons(val); + c->buf16[c->length/2 + 0] = htons(l); + c->buf16[c->length/2 + 1] = htons(0); + c->buf16[c->length/2 + 2] = htons(avp); + c->buf16[c->length/2 + 3] = htons(val); c->length += 8; } @@@ -1725,10 -1529,10 +1723,10 @@@ static void control32(controlt * c, uint16_t avp, uint32_t val, uint8_t m) { uint16_t l = (m ? 0x800A : 0x000A); - *(uint16_t *) (c->buf + c->length + 0) = htons(l); - *(uint16_t *) (c->buf + c->length + 2) = htons(0); - *(uint16_t *) (c->buf + c->length + 4) = htons(avp); - *(uint32_t *) (c->buf + c->length + 6) = htonl(val); + c->buf16[c->length/2 + 0] = htons(l); + c->buf16[c->length/2 + 1] = htons(0); + c->buf16[c->length/2 + 2] = htons(avp); + *(uint32_t *) &c->buf[c->length + 6] = htonl(val); c->length += 10; } @@@ -1736,10 -1540,10 +1734,10 @@@ static void controls(controlt * c, uint16_t avp, char *val, uint8_t m) { uint16_t l = ((m ? 0x8000 : 0) + strlen(val) + 6); - *(uint16_t *) (c->buf + c->length + 0) = htons(l); - *(uint16_t *) (c->buf + c->length + 2) = htons(0); - *(uint16_t *) (c->buf + c->length + 4) = htons(avp); - memcpy(c->buf + c->length + 6, val, strlen(val)); + c->buf16[c->length/2 + 0] = htons(l); + c->buf16[c->length/2 + 1] = htons(0); + c->buf16[c->length/2 + 2] = htons(avp); + memcpy(&c->buf[c->length + 6], val, strlen(val)); c->length += 6 + strlen(val); } @@@ -1747,10 -1551,10 +1745,10 @@@ static void controlb(controlt * c, uint16_t avp, uint8_t *val, unsigned int len, uint8_t m) { uint16_t l = ((m ? 0x8000 : 0) + len + 6); - *(uint16_t *) (c->buf + c->length + 0) = htons(l); - *(uint16_t *) (c->buf + c->length + 2) = htons(0); - *(uint16_t *) (c->buf + c->length + 4) = htons(avp); - memcpy(c->buf + c->length + 6, val, len); + c->buf16[c->length/2 + 0] = htons(l); + c->buf16[c->length/2 + 1] = htons(0); + c->buf16[c->length/2 + 2] = htons(avp); + memcpy(&c->buf[c->length + 6], val, len); c->length += 6 + len; } @@@ -1767,7 -1571,7 +1765,7 @@@ static controlt *controlnew(uint16_t mt } assert(c); c->next = 0; - *(uint16_t *) (c->buf + 0) = htons(0xC802); // flags/ver + c->buf16[0] = htons(0xC802); // flags/ver c->length = 12; control16(c, 0, mtype, 1); return c; @@@ -1777,26 -1581,26 +1775,26 @@@ // (ZLB send). static void controlnull(tunnelidt t) { - uint8_t buf[12]; + uint16_t buf[6]; if (tunnel[t].controlc) // Messages queued; They will carry the ack. return; - *(uint16_t *) (buf + 0) = htons(0xC802); // flags/ver - *(uint16_t *) (buf + 2) = htons(12); // length - *(uint16_t *) (buf + 4) = htons(tunnel[t].far); // tunnel - *(uint16_t *) (buf + 6) = htons(0); // session - *(uint16_t *) (buf + 8) = htons(tunnel[t].ns); // sequence - *(uint16_t *) (buf + 10) = htons(tunnel[t].nr); // sequence - tunnelsend(buf, 12, t); + buf[0] = htons(0xC802); // flags/ver + buf[1] = htons(12); // length + buf[2] = htons(tunnel[t].far); // tunnel + buf[3] = htons(0); // session + buf[4] = htons(tunnel[t].ns); // sequence + buf[5] = htons(tunnel[t].nr); // sequence + tunnelsend((uint8_t *)buf, 12, t); } // add a control message to a tunnel, and send if within window static void controladd(controlt *c, sessionidt far, tunnelidt t) { - *(uint16_t *) (c->buf + 2) = htons(c->length); // length - *(uint16_t *) (c->buf + 4) = htons(tunnel[t].far); // tunnel - *(uint16_t *) (c->buf + 6) = htons(far); // session - *(uint16_t *) (c->buf + 8) = htons(tunnel[t].ns); // sequence + c->buf16[1] = htons(c->length); // length + c->buf16[2] = htons(tunnel[t].far); // tunnel + c->buf16[3] = htons(far); // session + c->buf16[4] = htons(tunnel[t].ns); // sequence tunnel[t].ns++; // advance sequence // link in message in to queue if (tunnel[t].controlc) @@@ -1952,11 -1756,11 +1950,11 @@@ void sessionshutdown(sessionidt s, cha int routed = 0; for (r = 0; r < MAXROUTE && session[s].route[r].ip; r++) { - if ((session[s].ip & session[s].route[r].mask) == - (session[s].route[r].ip & session[s].route[r].mask)) + if ((session[s].ip >> (32-session[s].route[r].prefixlen)) == + (session[s].route[r].ip >> (32-session[s].route[r].prefixlen))) routed++; - if (del_routes) routeset(s, session[s].route[r].ip, session[s].route[r].mask, 0, 0); + if (del_routes) routeset(s, session[s].route[r].ip, session[s].route[r].prefixlen, 0, 0); session[s].route[r].ip = 0; } @@@ -1976,11 -1780,11 +1974,11 @@@ { // This session was part of a bundle bundle[b].num_of_links--; - LOG(3, s, 0, "MPPP: Dropping member link: %d from bundle %d\n",s,b); + LOG(3, s, session[s].tunnel, "MPPP: Dropping member link: %d from bundle %d\n",s,b); if(bundle[b].num_of_links == 0) { bundleclear(b); - LOG(3, s, 0, "MPPP: Kill bundle: %d (No remaing member links)\n",b); + LOG(3, s, session[s].tunnel, "MPPP: Kill bundle: %d (No remaing member links)\n",b); } else { @@@ -1997,7 -1801,7 +1995,7 @@@ break; } bundle[b].members[mem_num] = bundle[b].members[bundle[b].num_of_links]; - LOG(3, s, 0, "MPPP: Adjusted member links array\n"); + LOG(3, s, session[s].tunnel, "MPPP: Adjusted member links array\n"); } } cluster_send_bundle(b); @@@ -2012,10 -1816,10 +2010,10 @@@ controlt *c = controlnew(14); // sending CDN if (cdn_error) { - uint8_t buf[4]; - *(uint16_t *) buf = htons(cdn_result); - *(uint16_t *) (buf+2) = htons(cdn_error); - controlb(c, 1, buf, 4, 1); + uint16_t buf[2]; + buf[0] = htons(cdn_result); + buf[1] = htons(cdn_error); + controlb(c, 1, (uint8_t *)buf, 4, 1); } else control16(c, 1, cdn_result, 1); @@@ -2204,21 -2008,21 +2202,21 @@@ static void tunnelshutdown(tunnelidt t controlt *c = controlnew(4); // sending StopCCN if (error) { - uint8_t buf[64]; + uint16_t buf[32]; int l = 4; - *(uint16_t *) buf = htons(result); - *(uint16_t *) (buf+2) = htons(error); + buf[0] = htons(result); + buf[1] = htons(error); if (msg) { int m = strlen(msg); if (m + 4 > sizeof(buf)) m = sizeof(buf) - 4; - memcpy(buf+4, msg, m); + memcpy(buf+2, msg, m); l += m; } - controlb(c, 1, buf, l, 1); + controlb(c, 1, (uint8_t *)buf, l, 1); } else control16(c, 1, result, 1); @@@ -2960,7 -2764,7 +2958,7 @@@ void processudp(uint8_t *buf, int len, // Set multilink options before sending initial LCP packet sess_local[s].mp_mrru = 1614; - sess_local[s].mp_epdis = config->bind_address ? config->bind_address : my_address; + sess_local[s].mp_epdis = ntohl(config->bind_address ? config->bind_address : my_address); sendlcp(s, t); change_state(s, lcp, RequestSent); @@@ -3588,36 -3392,35 +3586,36 @@@ static int still_busy(void static clockt last_talked = 0; static clockt start_busy_wait = 0; - if (!config->cluster_iam_master) - { #ifdef BGP - static time_t stopped_bgp = 0; - if (bgp_configured) + static time_t stopped_bgp = 0; + if (bgp_configured) + { + if (!stopped_bgp) { - if (!stopped_bgp) - { - LOG(1, 0, 0, "Shutting down in %d seconds, stopping BGP...\n", QUIT_DELAY); + LOG(1, 0, 0, "Shutting down in %d seconds, stopping BGP...\n", QUIT_DELAY); - for (i = 0; i < BGP_NUM_PEERS; i++) - if (bgp_peers[i].state == Established) - bgp_stop(&bgp_peers[i]); + for (i = 0; i < BGP_NUM_PEERS; i++) + if (bgp_peers[i].state == Established) + bgp_stop(&bgp_peers[i]); - stopped_bgp = time_now; + stopped_bgp = time_now; + if (!config->cluster_iam_master) + { // we don't want to become master cluster_send_ping(0); return 1; } - - if (time_now < (stopped_bgp + QUIT_DELAY)) - return 1; } + + if (!config->cluster_iam_master && time_now < (stopped_bgp + QUIT_DELAY)) + return 1; + } #endif /* BGP */ + if (!config->cluster_iam_master) return 0; - } if (main_quit == QUIT_SHUTDOWN) { @@@ -3683,8 -3486,8 +3681,8 @@@ # include "fake_epoll.h" #endif -// the base set of fds polled: cli, cluster, tun, udp, control, dae -#define BASE_FDS 6 +// the base set of fds polled: cli, cluster, tun, udp, control, dae, netlink +#define BASE_FDS 7 // additional polled fds #ifdef BGP @@@ -3708,8 -3511,8 +3706,8 @@@ static void mainloop(void exit(1); } - LOG(4, 0, 0, "Beginning of main loop. clifd=%d, cluster_sockfd=%d, tunfd=%d, udpfd=%d, controlfd=%d, daefd=%d\n", - clifd, cluster_sockfd, tunfd, udpfd, controlfd, daefd); + LOG(4, 0, 0, "Beginning of main loop. clifd=%d, cluster_sockfd=%d, tunfd=%d, udpfd=%d, controlfd=%d, daefd=%d, nlfd=%d\n", + clifd, cluster_sockfd, tunfd, udpfd, controlfd, daefd, nlfd); /* setup our fds to poll for input */ { @@@ -3745,10 -3548,6 +3743,10 @@@ d[i].type = FD_TYPE_DAE; e.data.ptr = &d[i++]; epoll_ctl(epollfd, EPOLL_CTL_ADD, daefd, &e); + + d[i].type = FD_TYPE_NETLINK; + e.data.ptr = &d[i++]; + epoll_ctl(epollfd, EPOLL_CTL_ADD, nlfd, &e); } #ifdef BGP @@@ -3762,8 -3561,7 +3760,8 @@@ if (config->neighbour[i].name[0]) bgp_start(&bgp_peers[i], config->neighbour[i].name, config->neighbour[i].as, config->neighbour[i].keepalive, - config->neighbour[i].hold, 0); /* 0 = routing disabled */ + config->neighbour[i].hold, config->neighbour[i].update_source, + 0); /* 0 = routing disabled */ } #endif /* BGP */ @@@ -3886,32 -3684,6 +3884,32 @@@ break; #endif /* BGP */ + case FD_TYPE_NETLINK: + { + struct nlmsghdr *nh = (struct nlmsghdr *)buf; + s = netlink_recv(buf, sizeof(buf)); + if (nh->nlmsg_type == NLMSG_ERROR) + { + struct nlmsgerr *errmsg = NLMSG_DATA(nh); + if (errmsg->error) + { + if (errmsg->msg.nlmsg_seq < min_initok_nlseqnum) + { + LOG(0, 0, 0, "Got a fatal netlink error (while %s): %s\n", tun_nl_phase_msg[nh->nlmsg_seq], strerror(-errmsg->error)); + exit(1); + } + else + + LOG(0, 0, 0, "Got a netlink error: %s\n", strerror(-errmsg->error)); + } + // else it's a ack + } + else + LOG(1, 0, 0, "Got a unknown netlink message: type %d seq %d flags %d\n", nh->nlmsg_type, nh->nlmsg_seq, nh->nlmsg_flags); + n--; + break; + } + default: LOG(0, 0, 0, "Unexpected fd type returned from epoll_wait: %d\n", d->type); } @@@ -3983,11 -3755,6 +3981,11 @@@ more++; } } +#ifdef BGP + else + /* no event received, but timers could still have expired */ + bgp_process_peers_timers(); +#endif /* BGP */ if (time_changed) { @@@ -4475,18 -4242,18 +4473,18 @@@ static void fix_address_pool(int sid // // Add a block of addresses to the IP pool to hand out. // -static void add_to_ip_pool(in_addr_t addr, in_addr_t mask) +static void add_to_ip_pool(in_addr_t addr, int prefixlen) { int i; - if (mask == 0) - mask = 0xffffffff; // Host route only. + if (prefixlen == 0) + prefixlen = 32; // Host route only. - addr &= mask; + addr &= 0xffffffff << (32 - prefixlen); if (ip_pool_size >= MAXIPPOOL) // Pool is full! return ; - for (i = addr ;(i & mask) == addr; ++i) + for (i = addr ; i < addr+(1<<(32-prefixlen)); ++i) { if ((i & 0xff) == 0 || (i&0xff) == 255) continue; // Skip 0 and broadcast addresses. @@@ -4544,7 -4311,7 +4542,7 @@@ static void initippool( { // It's a range int numbits = 0; - in_addr_t start = 0, mask = 0; + in_addr_t start = 0; LOG(2, 0, 0, "Adding IP address range %s\n", buf); *p++ = 0; @@@ -4554,14 -4321,15 +4552,14 @@@ continue; } start = ntohl(inet_addr(pool)); - mask = (in_addr_t) (pow(2, numbits) - 1) << (32 - numbits); // Add a static route for this pool - LOG(5, 0, 0, "Adding route for address pool %s/%u\n", - fmtaddr(htonl(start), 0), 32 + mask); + LOG(5, 0, 0, "Adding route for address pool %s/%d\n", + fmtaddr(htonl(start), 0), numbits); - routeset(0, start, mask, 0, 1); + routeset(0, start, numbits, 0, 1); - add_to_ip_pool(start, mask); + add_to_ip_pool(start, numbits); } else { @@@ -4712,12 -4480,8 +4710,12 @@@ int main(int argc, char *argv[] initplugins(); initdata(optdebug, optconfig); - init_cli(hostname); + init_cli(); read_config_file(); + /* set hostname /after/ having read the config file */ + if (*config->hostname) + strcpy(hostname, config->hostname); + cli_init_complete(hostname); update_config(); init_tbf(config->num_tbfs); @@@ -4761,8 -4525,6 +4759,8 @@@ } } + initnetlink(); + /* Set up the cluster communications port. */ if (cluster_init() < 0) exit(1); @@@ -5214,11 -4976,11 +5212,11 @@@ int sessionsetup(sessionidt s, tunnelid // Add the route for this session. for (r = 0; r < MAXROUTE && session[s].route[r].ip; r++) { - if ((session[s].ip & session[s].route[r].mask) == - (session[s].route[r].ip & session[s].route[r].mask)) + if ((session[s].ip >> (32-session[s].route[r].prefixlen)) == + (session[s].route[r].ip >> (32-session[s].route[r].prefixlen))) routed++; - routeset(s, session[s].route[r].ip, session[s].route[r].mask, 0, 1); + routeset(s, session[s].route[r].ip, session[s].route[r].prefixlen, 0, 1); } // Static IPs need to be routed if not already @@@ -5289,7 -5051,7 +5287,7 @@@ int load_session(sessionidt s, session for (i = 0; !newip && i < MAXROUTE && (session[s].route[i].ip || new->route[i].ip); i++) if (new->route[i].ip != session[s].route[i].ip || - new->route[i].mask != session[s].route[i].mask) + new->route[i].prefixlen != session[s].route[i].prefixlen) newip++; // needs update @@@ -5300,11 -5062,11 +5298,11 @@@ // remove old routes... for (i = 0; i < MAXROUTE && session[s].route[i].ip; i++) { - if ((session[s].ip & session[s].route[i].mask) == - (session[s].route[i].ip & session[s].route[i].mask)) + if ((session[s].ip >> (32-session[s].route[i].prefixlen)) == + (session[s].route[i].ip >> (32-session[s].route[i].prefixlen))) routed++; - routeset(s, session[s].route[i].ip, session[s].route[i].mask, 0, 0); + routeset(s, session[s].route[i].ip, session[s].route[i].prefixlen, 0, 0); } // ...ip @@@ -5323,11 -5085,11 +5321,11 @@@ // add new routes... for (i = 0; i < MAXROUTE && new->route[i].ip; i++) { - if ((new->ip & new->route[i].mask) == - (new->route[i].ip & new->route[i].mask)) + if ((new->ip >> (32-new->route[i].prefixlen)) == + (new->route[i].ip >> (32-new->route[i].prefixlen))) routed++; - routeset(s, new->route[i].ip, new->route[i].mask, 0, 1); + routeset(s, new->route[i].ip, new->route[i].prefixlen, 0, 1); } // ...ip diff --combined l2tpns.h index 5ef6253,5b68df7..8e3d26e --- a/l2tpns.h +++ b/l2tpns.h @@@ -1,5 -1,5 +1,5 @@@ // L2TPNS Global Stuff - // $Id: l2tpns.h,v 1.121 2009/12/08 14:49:28 bodea Exp $ + // $Id: l2tpns.h,v 1.121 2009-12-08 14:49:28 bodea Exp $ #ifndef __L2TPNS_H__ #define __L2TPNS_H__ @@@ -14,7 -14,7 +14,7 @@@ #include #include - #define VERSION "2.2.0" + #define VERSION "2.2.1" // Limits #define MAXTUNNEL 500 // could be up to 65535 @@@ -38,9 -38,9 +38,10 @@@ #define PPPoE_MRU 1492 // maximum PPPoE MRU (rfc2516: 1500 less PPPoE header (6) and PPP protocol ID (2)) #define MAXETHER (MAXMTU+18) // max packet we try sending to tun #define MAXTEL 96 // telephone number +#define MAXHOSTNAME 256 // hostname #define MAXUSER 128 // username #define MAXPASS 128 // password + #define MAXCLASS 128 // radius class attribute size #define MAXPLUGINS 20 // maximum number of plugins to load #define MAXRADSERVER 10 // max radius servers #define MAXROUTE 10 // max static routes per session @@@ -234,7 -234,7 +235,7 @@@ struct cli_tunnel_actions typedef struct // route { in_addr_t ip; - in_addr_t mask; + int prefixlen; } routet; @@@ -242,10 -242,7 +243,10 @@@ typedef struct controls // control mes { struct controls *next; // next in queue uint16_t length; // length - uint8_t buf[MAXCONTROL]; + union { + uint8_t buf[MAXCONTROL]; + uint16_t buf16[MAXCONTROL/2]; + } __attribute__ ((__transparent_union__)); } controlt; @@@ -276,11 -273,10 +277,10 @@@ typedef struc uint8_t ipv6cp:4; // IPV6CP state uint8_t ccp:4; // CCP state } ppp; - char reserved_1[2]; // unused: padding + uint16_t mru; // maximum receive unit in_addr_t ip; // IP of session set by RADIUS response (host byte order). int ip_pool_index; // index to IP pool uint32_t unique_id; // unique session id - char reserved_2[4]; // unused: was ns/nr uint32_t magic; // ppp magic number uint32_t pin, pout; // packet counts uint32_t cin, cout; // byte counts @@@ -290,35 -286,36 +290,36 @@@ uint16_t throttle_out; // downstream throttle rate uint8_t filter_in; // input filter index (to ip_filters[N-1]; 0 if none) uint8_t filter_out; // output filter index - uint16_t mru; // maximum receive unit + uint16_t snoop_port; // Interception destination port + in_addr_t snoop_ip; // Interception destination IP clockt opened; // when started clockt die; // being closed, when to finally free uint32_t session_timeout; // Maximum session time in seconds - uint32_t idle_timeout; // Maximum idle time in seconds + uint32_t idle_timeout; // Maximum idle time in seconds time_t last_packet; // Last packet from the user (used for idle timeouts) - time_t last_data; // Last data packet to/from the user (used for idle timeouts) + time_t last_data; // Last data packet to/from the user (used for idle timeouts) in_addr_t dns1, dns2; // DNS servers routet route[MAXROUTE]; // static routes uint16_t tbf_in; // filter bucket for throttling in from the user. uint16_t tbf_out; // filter bucket for throttling out to the user. int random_vector_length; uint8_t random_vector[MAXTEL]; - char user[MAXUSER]; // user (needed in seesion for radius stop messages) + char user[MAXUSER]; // user (needed in session for radius stop messages) char called[MAXTEL]; // called number char calling[MAXTEL]; // calling number uint32_t tx_connect_speed; uint32_t rx_connect_speed; clockt timeout; // Session timeout - uint32_t mrru; // Multilink Max-Receive-Reconstructed-Unit - uint8_t mssf; // Multilink Short Sequence Number Header Format - epdist epdis; // Multilink Endpoint Discriminator - bundleidt bundle; // Multilink Bundle Identifier - in_addr_t snoop_ip; // Interception destination IP - uint16_t snoop_port; // Interception destination port + uint32_t mrru; // Multilink Max-Receive-Reconstructed-Unit + epdist epdis; // Multilink Endpoint Discriminator + bundleidt bundle; // Multilink Bundle Identifier + uint8_t mssf; // Multilink Short Sequence Number Header Format uint8_t walled_garden; // is this session gardened? + uint8_t classlen; // class (needed for radius accounting messages) + char class[MAXCLASS]; uint8_t ipv6prefixlen; // IPv6 route prefix length struct in6_addr ipv6route; // Static IPv6 route - char reserved_3[11]; // Space to expand structure without changing HB_VERSION + char reserved[12]; // Space to expand structure without changing HB_VERSION } sessiont; @@@ -620,10 -617,6 +621,10 @@@ struct Tstat #define SET_STAT(x, y) #endif +#ifndef IFNAMSIZ +# define IFNAMSIZ 16 +#endif + typedef struct { int debug; // debugging level @@@ -639,7 -632,7 +640,7 @@@ int reload_config; // flag to re-read config (set by cli) int multi_read_count; // amount of packets to read per fd in processing loop - char tundevice[10]; // tun device name + char tundevice[IFNAMSIZ]; // tun device name char log_filename[128]; char l2tp_secret[64]; // L2TP shared secret @@@ -720,8 -713,6 +721,8 @@@ int cluster_master_min_adv; // Master advertises routes while the number of up to date // slaves is less than this value. + in_addr_t cli_bind_address; // bind address for CLI + char hostname[MAXHOSTNAME]; // hostname (overridden by -h on command line) // Guest change char guest_user[MAXUSER]; // Guest account username @@@ -733,10 -724,7 +734,10 @@@ uint16_t as; int keepalive; int hold; + struct in_addr update_source; } neighbour[BGP_NUM_PEERS]; + in_addr_t nexthop_address; + struct in6_addr nexthop6_address; #endif } configt; @@@ -910,8 -898,7 +911,8 @@@ void become_master(void); // We're the // cli.c -void init_cli(char *hostname); +void init_cli(); +void cli_init_complete(char *hostname); void cli_do_file(FILE *fh); void cli_do(int sockfd); int cli_arg_help(struct cli_def *cli, int cr_ok, char *entry, ...); @@@ -949,7 -936,6 +950,7 @@@ struct event_data FD_TYPE_DAE, FD_TYPE_RADIUS, FD_TYPE_BGP, + FD_TYPE_NETLINK, } type; int index; // for RADIUS, BGP }; @@@ -963,19 -949,4 +964,4 @@@ extern uint16_t MSS #define CLI_HELP_REQUESTED (argc > 0 && argv[argc-1][strlen(argv[argc-1])-1] == '?') #define CLI_HELP_NO_ARGS (argc > 1 || argv[0][1]) ? CLI_OK : cli_arg_help(cli, 1, NULL) - // CVS identifiers (for "show version file") - extern char const *cvs_id_arp; - extern char const *cvs_id_cli; - extern char const *cvs_id_cluster; - extern char const *cvs_id_constants; - extern char const *cvs_id_control; - extern char const *cvs_id_icmp; - extern char const *cvs_id_l2tpns; - extern char const *cvs_id_ll; - extern char const *cvs_id_md5; - extern char const *cvs_id_ppp; - extern char const *cvs_id_radius; - extern char const *cvs_id_tbf; - extern char const *cvs_id_util; - #endif /* __L2TPNS_H__ */ diff --combined ppp.c index 5dccf0d,ed12040..4d01e90 --- a/ppp.c +++ b/ppp.c @@@ -1,7 -1,5 +1,5 @@@ // L2TPNS PPP Stuff - char const *cvs_id_ppp = "$Id: ppp.c,v 1.104 2009/12/08 14:49:28 bodea Exp $"; - #include #include #include @@@ -821,10 -819,6 +819,10 @@@ void processlcp(sessionidt s, tunnelid break; + case Closing: + sessionshutdown(s, "LCP: ConfigReq in state Closing. This should not happen. Killing session.", CDN_ADMIN_DISC, TERM_LOST_SERVICE); + break; + default: LOG(2, s, t, "LCP: ignoring %s in state %s\n", ppp_code(*p), ppp_state(session[s].ppp.lcp)); return; @@@ -1540,7 -1534,7 +1538,7 @@@ void processipv6cp(sessionidt s, tunnel uint8_t *o = p + 4; int length = l - 4; int gotip = 0; - uint8_t ident[8]; + uint32_t ident[2]; while (length > 2) { @@@ -1552,12 -1546,12 +1550,12 @@@ gotip++; // seen address if (o[1] != 10) return; - *(uint32_t *) ident = htonl(session[s].ip); - *(uint32_t *) (ident + 4) = 0; + ident[0] = htonl(session[s].ip); + ident[1] = 0; if (memcmp(o + 2, ident, sizeof(ident))) { - q = ppp_conf_nak(s, b, sizeof(b), PPPIPV6CP, &response, q, p, o, ident, sizeof(ident)); + q = ppp_conf_nak(s, b, sizeof(b), PPPIPV6CP, &response, q, p, o, (uint8_t *)ident, sizeof(ident)); if (!q) return; } @@@ -2375,7 -2369,7 +2373,7 @@@ uint8_t *makeppp(uint8_t *b, int size, if ((b - start) + l > size) { - LOG(2, s, t, "makeppp would overflow buffer (size=%d, header+payload=%td)\n", size, (b - start) + l); + LOG(2, s, t, "makeppp would overflow buffer (size=%d, header+payload=%ld)\n", size, (b - start) + l); return NULL; } diff --combined radius.c index 4e67e63,f9f7263..02b29b7 --- a/radius.c +++ b/radius.c @@@ -1,7 -1,5 +1,5 @@@ // L2TPNS Radius Stuff - char const *cvs_id_radius = "$Id: radius.c,v 1.56 2009/12/08 14:49:28 bodea Exp $"; - #include #include #include @@@ -365,6 -363,13 +363,13 @@@ void radiussend(uint16_t r, uint8_t sta } } + if (session[s].classlen) { + *p = 25; // class + p[1] = session[s].classlen + 2; + memcpy(p + 2, session[s].class, session[s].classlen); + p += p[1]; + } + { struct param_radius_account acct = { &tunnel[session[s].tunnel], &session[s], &p }; run_plugins(PLUGIN_RADIUS_ACCOUNT, &acct); @@@ -402,11 -407,21 +407,11 @@@ int r; for (r = 0; s && r < MAXROUTE && session[s].route[r].ip; r++) { - int width = 32; - if (session[s].route[r].mask) - { - int mask = session[s].route[r].mask; - while (!(mask & 1)) - { - width--; - mask >>= 1; - } - } - *p = 22; // Framed-Route p[1] = sprintf((char *) p + 2, "%s/%d %s 1", fmtaddr(htonl(session[s].route[r].ip), 0), - width, fmtaddr(htonl(session[s].ip), 1)) + 2; + session[s].route[r].prefixlen, + fmtaddr(htonl(session[s].ip), 1)) + 2; p += p[1]; } @@@ -686,7 -701,7 +691,7 @@@ void processrad(uint8_t *buf, int len, else if (*p == 22) { // Framed-Route - in_addr_t ip = 0, mask = 0; + in_addr_t ip = 0; uint8_t u = 0; uint8_t bits = 0; uint8_t *n = p + 2; @@@ -708,13 -723,14 +713,13 @@@ n++; while (n < e && isdigit(*n)) bits = bits * 10 + *n++ - '0'; - mask = (( -1) << (32 - bits)); } else if ((ip >> 24) < 128) - mask = 0xFF0000; + bits = 8; else if ((ip >> 24) < 192) - mask = 0xFFFF0000; + bits = 16; else - mask = 0xFFFFFF00; + bits = 24; if (routes == MAXROUTE) { @@@ -722,11 -738,11 +727,11 @@@ } else if (ip) { - LOG(3, s, session[s].tunnel, " Radius reply contains route for %s/%s\n", - fmtaddr(htonl(ip), 0), fmtaddr(htonl(mask), 1)); + LOG(3, s, session[s].tunnel, " Radius reply contains route for %s/%d\n", + fmtaddr(htonl(ip), 0), bits); session[s].route[routes].ip = ip; - session[s].route[routes].mask = mask; + session[s].route[routes].prefixlen = bits; routes++; } } @@@ -809,6 -825,15 +814,15 @@@ session[s].ipv6prefixlen = prefixlen; } } + else if (*p == 25) + { + // Class + if (p[1] < 3) continue; + session[s].classlen = p[1] - 2; + if (session[s].classlen > MAXCLASS) + session[s].classlen = MAXCLASS; + memcpy(session[s].class, p + 2, session[s].classlen); + } } } else if (r_code == AccessReject) diff --combined util.c index 78ec78b,0ab1d92..e132be6 --- a/util.c +++ b/util.c @@@ -1,7 -1,5 +1,5 @@@ /* Misc util functions */ - char const *cvs_id_util = "$Id: util.c,v 1.14 2006/04/05 01:45:57 bodea Exp $"; - #include #include #include @@@ -81,6 -79,8 +79,6 @@@ pid_t fork_and_close( if (controlfd != -1) close(controlfd); if (daefd != -1) close(daefd); if (snoopfd != -1) close(snoopfd); - if (ifrfd != -1) close(ifrfd); - if (ifr6fd != -1) close(ifr6fd); if (rand_fd != -1) close(rand_fd); if (epollfd != -1) close(epollfd);