X-Git-Url: http://git.sameswireless.fr/l2tpns.git/blobdiff_plain/9e78f1af54f2c8b7abfbe6ffe2dfbd26e98672c2..c1d1c2a8c4f22c3911d392393072327b0e319c5e:/l2tpns.c diff --git a/l2tpns.c b/l2tpns.c index 8fca167..4545d6c 100644 --- a/l2tpns.c +++ b/l2tpns.c @@ -53,24 +53,18 @@ #include "bgp.h" #endif -#ifdef LAC #include "l2tplac.h" -#endif #include "pppoe.h" -#ifdef LAC char * Vendor_name = "Linux L2TPNS"; uint32_t call_serial_number = 0; -#endif // 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 -#ifdef LAC +int udpfd[MAX_UDPFD + 1] = INIT_TABUDPFD; // array UDP file handle + 1 for lac udp int udplacfd = -1; // UDP LAC file handle -#endif int controlfd = -1; // Control signal handle int clifd = -1; // Socket listening for CLI connections. int daefd = -1; // Socket listening for DAE connections. @@ -181,17 +175,16 @@ config_descriptt config_values[] = { CONFIG("idle_echo_timeout", idle_echo_timeout, INT), CONFIG("iftun_address", iftun_address, IPv4), CONFIG("tundevicename", tundevicename, STRING), -#ifdef LAC CONFIG("disable_lac_func", disable_lac_func, BOOL), CONFIG("auth_tunnel_change_addr_src", auth_tunnel_change_addr_src, BOOL), CONFIG("bind_address_remotelns", bind_address_remotelns, IPv4), CONFIG("bind_portremotelns", bind_portremotelns, SHORT), -#endif CONFIG("pppoe_if_to_bind", pppoe_if_to_bind, STRING), CONFIG("pppoe_service_name", pppoe_service_name, STRING), CONFIG("pppoe_ac_name", pppoe_ac_name, STRING), CONFIG("disable_sending_hello", disable_sending_hello, BOOL), CONFIG("disable_no_spoof", disable_no_spoof, BOOL), + CONFIG("bind_multi_address", bind_multi_address, STRING), { NULL, 0, 0, 0 } }; @@ -700,7 +693,7 @@ static void inittun(void) } if (*config->tundevicename) - strncpy(ifr.ifr_name, config->tundevicename, IFNAMSIZ); + strncpy(ifr.ifr_name, config->tundevicename, IFNAMSIZ); if (ioctl(tunfd, TUNSETIFF, (void *) &ifr) < 0) { @@ -762,14 +755,30 @@ static void inittun(void) req.ifmsg.ifaddr.ifa_scope = RT_SCOPE_UNIVERSE; req.ifmsg.ifaddr.ifa_index = tunidx; - if (config->iftun_address) - ip = config->iftun_address; + if (config->nbmultiaddress > 1) + { + int i; + for (i = 0; i < config->nbmultiaddress ; i++) + { + ip = config->iftun_n_address[i]; + netlink_addattr(&req.nh, IFA_LOCAL, &ip, sizeof(ip)); + if (netlink_send(&req.nh) < 0) + goto senderror; + } + } else - ip = 0x01010101; // 1.1.1.1 - netlink_addattr(&req.nh, IFA_LOCAL, &ip, sizeof(ip)); + { + if (config->iftun_address) + ip = config->iftun_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; + } + - 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]) { @@ -839,28 +848,35 @@ senderror: exit(1); } -// set up UDP ports -static void initudp(void) +// set up LAC UDP ports +static void initlacudp(void) { int on = 1; struct sockaddr_in addr; - // Tunnel + // Tunnel to Remote LNS memset(&addr, 0, sizeof(addr)); addr.sin_family = AF_INET; - addr.sin_port = htons(L2TPPORT); - addr.sin_addr.s_addr = config->bind_address; - udpfd = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP); - setsockopt(udpfd, SOL_SOCKET, SO_REUSEADDR, &on, sizeof(on)); + addr.sin_port = htons(config->bind_portremotelns); + addr.sin_addr.s_addr = config->bind_address_remotelns; + udplacfd = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP); + setsockopt(udplacfd, SOL_SOCKET, SO_REUSEADDR, &on, sizeof(on)); { - int flags = fcntl(udpfd, F_GETFL, 0); - fcntl(udpfd, F_SETFL, flags | O_NONBLOCK); + int flags = fcntl(udplacfd, F_GETFL, 0); + fcntl(udplacfd, F_SETFL, flags | O_NONBLOCK); } - if (bind(udpfd, (struct sockaddr *) &addr, sizeof(addr)) < 0) + if (bind(udplacfd, (struct sockaddr *) &addr, sizeof(addr)) < 0) { - LOG(0, 0, 0, "Error in UDP bind: %s\n", strerror(errno)); + LOG(0, 0, 0, "Error in UDP REMOTE LNS bind: %s\n", strerror(errno)); exit(1); } +} + +// set up control ports +static void initcontrol(void) +{ + int on = 1; + struct sockaddr_in addr; // Control memset(&addr, 0, sizeof(addr)); @@ -874,6 +890,13 @@ static void initudp(void) LOG(0, 0, 0, "Error in control bind: %s\n", strerror(errno)); exit(1); } +} + +// set up Dynamic Authorization Extensions to RADIUS port +static void initdae(void) +{ + int on = 1; + struct sockaddr_in addr; // Dynamic Authorization Extensions to RADIUS memset(&addr, 0, sizeof(addr)); @@ -887,28 +910,30 @@ static void initudp(void) LOG(0, 0, 0, "Error in DAE bind: %s\n", strerror(errno)); exit(1); } +} -#ifdef LAC - // Tunnel to Remote LNS +// set up UDP ports +static void initudp(int * pudpfd, in_addr_t ip_bind) +{ + int on = 1; + struct sockaddr_in addr; + + // Tunnel memset(&addr, 0, sizeof(addr)); addr.sin_family = AF_INET; - addr.sin_port = htons(config->bind_portremotelns); - addr.sin_addr.s_addr = config->bind_address_remotelns; - udplacfd = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP); - setsockopt(udplacfd, SOL_SOCKET, SO_REUSEADDR, &on, sizeof(on)); + addr.sin_port = htons(L2TPPORT); + addr.sin_addr.s_addr = ip_bind; + (*pudpfd) = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP); + setsockopt((*pudpfd), SOL_SOCKET, SO_REUSEADDR, &on, sizeof(on)); { - int flags = fcntl(udplacfd, F_GETFL, 0); - fcntl(udplacfd, F_SETFL, flags | O_NONBLOCK); + int flags = fcntl((*pudpfd), F_GETFL, 0); + fcntl((*pudpfd), F_SETFL, flags | O_NONBLOCK); } - if (bind(udplacfd, (struct sockaddr *) &addr, sizeof(addr)) < 0) + if (bind((*pudpfd), (struct sockaddr *) &addr, sizeof(addr)) < 0) { - LOG(0, 0, 0, "Error in UDP REMOTE LNS bind: %s\n", strerror(errno)); + LOG(0, 0, 0, "Error in UDP bind: %s\n", strerror(errno)); exit(1); } -#endif - - // Intercept - snoopfd = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP); } // @@ -1233,14 +1258,11 @@ void tunnelsend(uint8_t * buf, uint16_t l, tunnelidt t) LOG(3, 0, t, "Control message resend try %d\n", tunnel[t].try); } } -#ifdef LAC - if (sendto((tunnel[t].isremotelns?udplacfd:udpfd), buf, l, 0, (void *) &addr, sizeof(addr)) < 0) -#else - if (sendto(udpfd, buf, l, 0, (void *) &addr, sizeof(addr)) < 0) -#endif + + if (sendto(udpfd[tunnel[t].indexudp], buf, l, 0, (void *) &addr, sizeof(addr)) < 0) { LOG(0, ntohs((*(uint16_t *) (buf + 6))), t, "Error sending data out tunnel: %s (udpfd=%d, buf=%p, len=%d, dest=%s)\n", - strerror(errno), udpfd, buf, l, inet_ntoa(addr.sin_addr)); + strerror(errno), udpfd[tunnel[t].indexudp], buf, l, inet_ntoa(addr.sin_addr)); STAT(tunnel_tx_errors); return; } @@ -1872,7 +1894,8 @@ static controlt *controlnew(uint16_t mtype) } assert(c); c->next = 0; - *(uint16_t *) (c->buf + 0) = htons(0xC802); // flags/ver + c->buf[0] = 0xC8; // flags + c->buf[1] = 0x02; // ver c->length = 12; control16(c, 0, mtype, 1); return c; @@ -1882,17 +1905,17 @@ static controlt *controlnew(uint16_t mtype) // (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 @@ -2152,14 +2175,15 @@ void sessionshutdown(sessionidt s, char const *reason, int cdn_result, int cdn_e pppoe_shutdown_session(s); } else - { // Send CDN + { + // Send CDN 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); @@ -2206,7 +2230,7 @@ void sendipcp(sessionidt s, tunnelidt t) q[4] = 3; // ip address option q[5] = 6; // option length *(in_addr_t *) (q + 6) = config->peer_address ? config->peer_address : - config->iftun_address ? config->iftun_address : + config->iftun_n_address[tunnel[t].indexudp] ? config->iftun_n_address[tunnel[t].indexudp] : my_address; // send my IP tunnelsend(buf, 10 + (q - buf), t); // send it @@ -2270,7 +2294,6 @@ void sessionkill(sessionidt s, char *reason) if (sess_local[s].radius) radiusclear(sess_local[s].radius, s); // cant send clean accounting data, session is killed -#ifdef LAC if (session[s].forwardtosession) { sessionidt sess = session[s].forwardtosession; @@ -2280,7 +2303,6 @@ void sessionkill(sessionidt s, char *reason) sessionshutdown(sess, reason, CDN_ADMIN_DISC, TERM_ADMIN_RESET); } } -#endif LOG(2, s, session[s].tunnel, "Kill session %d (%s): %s\n", s, session[s].user, reason); sessionclear(s); @@ -2361,21 +2383,21 @@ static void tunnelshutdown(tunnelidt t, char *reason, int result, int error, cha 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); @@ -2386,7 +2408,7 @@ static void tunnelshutdown(tunnelidt t, char *reason, int result, int error, cha } // read and process packet on tunnel (UDP) -void processudp(uint8_t *buf, int len, struct sockaddr_in *addr) +void processudp(uint8_t *buf, int len, struct sockaddr_in *addr, uint16_t indexudpfd) { uint8_t *chapresponse = NULL; uint16_t l = len, t = 0, s = 0, ns = 0, nr = 0; @@ -2477,7 +2499,7 @@ void processudp(uint8_t *buf, int len, struct sockaddr_in *addr) if (!config->cluster_iam_master) { - master_forward_packet(buf, len, addr->sin_addr.s_addr, addr->sin_port); + master_forward_packet(buf, len, addr->sin_addr.s_addr, addr->sin_port, indexudpfd); return; } @@ -2527,6 +2549,7 @@ void processudp(uint8_t *buf, int len, struct sockaddr_in *addr) tunnel[t].ip = ntohl(*(in_addr_t *) & addr->sin_addr); tunnel[t].port = ntohs(addr->sin_port); tunnel[t].window = 4; // default window + tunnel[t].indexudp = indexudpfd; STAT(tunnel_created); LOG(1, 0, t, " New tunnel from %s:%u ID %u\n", fmtaddr(htonl(tunnel[t].ip), 0), tunnel[t].port, t); @@ -2798,7 +2821,6 @@ void processudp(uint8_t *buf, int len, struct sockaddr_in *addr) } break; case 13: // Response -#ifdef LAC if (tunnel[t].isremotelns) { chapresponse = calloc(17, 1); @@ -2806,7 +2828,6 @@ void processudp(uint8_t *buf, int len, struct sockaddr_in *addr) LOG(3, s, t, "received challenge response from REMOTE LNS\n"); } else -#endif /* LAC */ // Why did they send a response? We never challenge. LOG(2, s, t, " received unexpected challenge response\n"); break; @@ -3052,7 +3073,6 @@ void processudp(uint8_t *buf, int len, struct sockaddr_in *addr) case 2: // SCCRP tunnel[t].state = TUNNELOPEN; tunnel[t].lastrec = time_now; -#ifdef LAC LOG(3, s, t, "Received SCCRP\n"); if (main_quit != QUIT_SHUTDOWN) { @@ -3083,7 +3103,6 @@ void processudp(uint8_t *buf, int len, struct sockaddr_in *addr) { tunnelshutdown(t, "Shutting down", 6, 0, 0); } -#endif /* LAC */ break; case 3: // SCCN LOG(3, s, t, "Received SCCN\n"); @@ -3161,7 +3180,6 @@ void processudp(uint8_t *buf, int len, struct sockaddr_in *addr) } return; case 11: // ICRP -#ifdef LAC LOG(3, s, t, "Received ICRP\n"); if (session[s].forwardtosession) { @@ -3177,7 +3195,6 @@ void processudp(uint8_t *buf, int len, struct sockaddr_in *addr) controladd(c, asession, t); // send the message LOG(3, s, t, "Sending ICCN\n"); } -#endif /* LAC */ break; case 12: // ICCN LOG(3, s, t, "Received ICCN\n"); @@ -3193,7 +3210,7 @@ void processudp(uint8_t *buf, int len, struct sockaddr_in *addr) // Set multilink options before sending initial LCP packet sess_local[s].mp_mrru = 1614; - sess_local[s].mp_epdis = ntohl(config->iftun_address ? config->iftun_address : my_address); + sess_local[s].mp_epdis = ntohl(config->iftun_n_address[tunnel[t].indexudp] ? config->iftun_n_address[tunnel[t].indexudp] : my_address); sendlcp(s, t); change_state(s, lcp, RequestSent); @@ -3251,12 +3268,11 @@ void processudp(uint8_t *buf, int len, struct sockaddr_in *addr) l -= 2; } -#ifdef LAC if (session[s].forwardtosession) { LOG(5, s, t, "Forwarding data session to session %u\n", session[s].forwardtosession); // Forward to LAC/BAS or Remote LNS session - lac_session_forward(buf, len, s, proto, addr->sin_addr.s_addr, addr->sin_port); + lac_session_forward(buf, len, s, proto, addr->sin_addr.s_addr, addr->sin_port, indexudpfd); return; } else if (config->auth_tunnel_change_addr_src) @@ -3271,14 +3287,13 @@ void processudp(uint8_t *buf, int len, struct sockaddr_in *addr) tunnel[t].ip = ntohl(addr->sin_addr.s_addr); } } -#endif /* LAC */ if (s && !session[s].opened) // Is something wrong?? { if (!config->cluster_iam_master) { // Pass it off to the master to deal with.. - master_forward_packet(buf, len, addr->sin_addr.s_addr, addr->sin_port); + master_forward_packet(buf, len, addr->sin_addr.s_addr, addr->sin_port, indexudpfd); return; } @@ -3290,37 +3305,37 @@ void processudp(uint8_t *buf, int len, struct sockaddr_in *addr) if (proto == PPPPAP) { session[s].last_packet = time_now; - if (!config->cluster_iam_master) { master_forward_packet(buf, len, addr->sin_addr.s_addr, addr->sin_port); return; } + if (!config->cluster_iam_master) { master_forward_packet(buf, len, addr->sin_addr.s_addr, addr->sin_port, indexudpfd); return; } processpap(s, t, p, l); } else if (proto == PPPCHAP) { session[s].last_packet = time_now; - if (!config->cluster_iam_master) { master_forward_packet(buf, len, addr->sin_addr.s_addr, addr->sin_port); return; } + if (!config->cluster_iam_master) { master_forward_packet(buf, len, addr->sin_addr.s_addr, addr->sin_port, indexudpfd); return; } processchap(s, t, p, l); } else if (proto == PPPLCP) { session[s].last_packet = time_now; - if (!config->cluster_iam_master) { master_forward_packet(buf, len, addr->sin_addr.s_addr, addr->sin_port); return; } + if (!config->cluster_iam_master) { master_forward_packet(buf, len, addr->sin_addr.s_addr, addr->sin_port, indexudpfd); return; } processlcp(s, t, p, l); } else if (proto == PPPIPCP) { session[s].last_packet = time_now; - if (!config->cluster_iam_master) { master_forward_packet(buf, len, addr->sin_addr.s_addr, addr->sin_port); return; } + if (!config->cluster_iam_master) { master_forward_packet(buf, len, addr->sin_addr.s_addr, addr->sin_port, indexudpfd); return; } processipcp(s, t, p, l); } else if (proto == PPPIPV6CP && config->ipv6_prefix.s6_addr[0]) { session[s].last_packet = time_now; - if (!config->cluster_iam_master) { master_forward_packet(buf, len, addr->sin_addr.s_addr, addr->sin_port); return; } + if (!config->cluster_iam_master) { master_forward_packet(buf, len, addr->sin_addr.s_addr, addr->sin_port, indexudpfd); return; } processipv6cp(s, t, p, l); } else if (proto == PPPCCP) { session[s].last_packet = time_now; - if (!config->cluster_iam_master) { master_forward_packet(buf, len, addr->sin_addr.s_addr, addr->sin_port); return; } + if (!config->cluster_iam_master) { master_forward_packet(buf, len, addr->sin_addr.s_addr, addr->sin_port, indexudpfd); return; } processccp(s, t, p, l); } else if (proto == PPPIP) @@ -3334,7 +3349,7 @@ void processudp(uint8_t *buf, int len, struct sockaddr_in *addr) session[s].last_packet = session[s].last_data = time_now; if (session[s].walled_garden && !config->cluster_iam_master) { - master_forward_packet(buf, len, addr->sin_addr.s_addr, addr->sin_port); + master_forward_packet(buf, len, addr->sin_addr.s_addr, addr->sin_port, indexudpfd); return; } @@ -3352,7 +3367,7 @@ void processudp(uint8_t *buf, int len, struct sockaddr_in *addr) if (!config->cluster_iam_master) { // The fragments reconstruction is managed by the Master. - master_forward_packet(buf, len, addr->sin_addr.s_addr, addr->sin_port); + master_forward_packet(buf, len, addr->sin_addr.s_addr, addr->sin_port, indexudpfd); return; } @@ -3369,7 +3384,7 @@ void processudp(uint8_t *buf, int len, struct sockaddr_in *addr) session[s].last_packet = session[s].last_data = time_now; if (session[s].walled_garden && !config->cluster_iam_master) { - master_forward_packet(buf, len, addr->sin_addr.s_addr, addr->sin_port); + master_forward_packet(buf, len, addr->sin_addr.s_addr, addr->sin_port, indexudpfd); return; } @@ -3378,7 +3393,7 @@ void processudp(uint8_t *buf, int len, struct sockaddr_in *addr) else if (session[s].ppp.lcp == Opened) { session[s].last_packet = time_now; - if (!config->cluster_iam_master) { master_forward_packet(buf, len, addr->sin_addr.s_addr, addr->sin_port); return; } + if (!config->cluster_iam_master) { master_forward_packet(buf, len, addr->sin_addr.s_addr, addr->sin_port, indexudpfd); return; } protoreject(s, t, p, l, proto); } else @@ -3947,13 +3962,8 @@ static int still_busy(void) # include "fake_epoll.h" #endif -#ifdef LAC -// the base set of fds polled: cli, cluster, tun, udp, control, dae, netlink, udplac, pppoedisc, pppoesess -#define BASE_FDS 10 -#else -// the base set of fds polled: cli, cluster, tun, udp, control, dae, netlink, pppoedisc, pppoesess -#define BASE_FDS 9 -#endif +// the base set of fds polled: cli, cluster, tun, udp (MAX_UDPFD), control, dae, netlink, udplac, pppoedisc, pppoesess +#define BASE_FDS (9 + MAX_UDPFD) // additional polled fds #ifdef BGP @@ -3965,7 +3975,7 @@ static int still_busy(void) // main loop - gets packets on tun or udp and processes them static void mainloop(void) { - int i; + int i, j; uint8_t buf[65536]; uint8_t *p = buf + 32; // for the hearder of the forwarded MPPP packet (see C_MPPP_FORWARD) // and the forwarded pppoe session @@ -3980,13 +3990,8 @@ static void mainloop(void) exit(1); } -#ifdef LAC LOG(4, 0, 0, "Beginning of main loop. clifd=%d, cluster_sockfd=%d, tunfd=%d, udpfd=%d, controlfd=%d, daefd=%d, nlfd=%d , udplacfd=%d, pppoefd=%d, pppoesessfd=%d\n", - clifd, cluster_sockfd, tunfd, udpfd, controlfd, daefd, nlfd, udplacfd, pppoediscfd, pppoesessfd); -#else - LOG(4, 0, 0, "Beginning of main loop. clifd=%d, cluster_sockfd=%d, tunfd=%d, udpfd=%d, controlfd=%d, daefd=%d, nlfd=%d, pppoefd=%d, pppoesessfd=%d\n", - clifd, cluster_sockfd, tunfd, udpfd, controlfd, daefd, nlfd, pppoediscfd, pppoesessfd); -#endif + clifd, cluster_sockfd, tunfd, udpfd[0], controlfd, daefd, nlfd, udplacfd, pppoediscfd, pppoesessfd); /* setup our fds to poll for input */ { @@ -4011,10 +4016,6 @@ static void mainloop(void) e.data.ptr = &d[i++]; epoll_ctl(epollfd, EPOLL_CTL_ADD, tunfd, &e); - d[i].type = FD_TYPE_UDP; - e.data.ptr = &d[i++]; - epoll_ctl(epollfd, EPOLL_CTL_ADD, udpfd, &e); - d[i].type = FD_TYPE_CONTROL; e.data.ptr = &d[i++]; epoll_ctl(epollfd, EPOLL_CTL_ADD, controlfd, &e); @@ -4027,12 +4028,6 @@ static void mainloop(void) e.data.ptr = &d[i++]; epoll_ctl(epollfd, EPOLL_CTL_ADD, nlfd, &e); -#ifdef LAC - d[i].type = FD_TYPE_UDPLAC; - e.data.ptr = &d[i++]; - epoll_ctl(epollfd, EPOLL_CTL_ADD, udplacfd, &e); -#endif - d[i].type = FD_TYPE_PPPOEDISC; e.data.ptr = &d[i++]; epoll_ctl(epollfd, EPOLL_CTL_ADD, pppoediscfd, &e); @@ -4040,6 +4035,14 @@ static void mainloop(void) d[i].type = FD_TYPE_PPPOESESS; e.data.ptr = &d[i++]; epoll_ctl(epollfd, EPOLL_CTL_ADD, pppoesessfd, &e); + + for (j = 0; j < config->nbudpfd; j++) + { + d[i].type = FD_TYPE_UDP; + d[i].index = j; + e.data.ptr = &d[i++]; + epoll_ctl(epollfd, EPOLL_CTL_ADD, udpfd[j], &e); + } } #ifdef BGP @@ -4101,16 +4104,12 @@ static void mainloop(void) struct in_addr local; socklen_t alen; int c, s; - int udp_ready = 0; -#ifdef LAC - int udplac_ready = 0; - int udplac_pkts = 0; -#endif + int udp_ready[MAX_UDPFD + 1] = INIT_TABUDPVAR; int pppoesess_ready = 0; int pppoesess_pkts = 0; int tun_ready = 0; int cluster_ready = 0; - int udp_pkts = 0; + int udp_pkts[MAX_UDPFD + 1] = INIT_TABUDPVAR; int tun_pkts = 0; int cluster_pkts = 0; #ifdef BGP @@ -4144,10 +4143,7 @@ static void mainloop(void) // these are handled below, with multiple interleaved reads case FD_TYPE_CLUSTER: cluster_ready++; break; case FD_TYPE_TUN: tun_ready++; break; - case FD_TYPE_UDP: udp_ready++; break; -#ifdef LAC - case FD_TYPE_UDPLAC: udplac_ready++; break; -#endif + case FD_TYPE_UDP: udp_ready[d->index]++; break; case FD_TYPE_PPPOESESS: pppoesess_ready++; break; case FD_TYPE_PPPOEDISC: // pppoe discovery @@ -4188,8 +4184,8 @@ static void mainloop(void) #ifdef BGP case FD_TYPE_BGP: - bgp_events[d->index] = events[i].events; - n--; + bgp_events[d->index] = events[i].events; + n--; break; #endif /* BGP */ @@ -4208,7 +4204,6 @@ static void mainloop(void) exit(1); } else - LOG(0, 0, 0, "Got a netlink error: %s\n", strerror(-errmsg->error)); } // else it's a ack @@ -4220,7 +4215,7 @@ static void mainloop(void) } default: - LOG(0, 0, 0, "Unexpected fd type returned from epoll_wait: %d\n", d->type); + LOG(0, 0, 0, "Unexpected fd type returned from epoll_wait: %d\n", d->type); } } @@ -4230,40 +4225,25 @@ static void mainloop(void) for (c = 0; n && c < config->multi_read_count; c++) { - // L2TP - if (udp_ready) + for (j = 0; j < config->nbudpfd; j++) { - alen = sizeof(addr); - if ((s = recvfrom(udpfd, p, size_bufp, 0, (void *) &addr, &alen)) > 0) - { - processudp(p, s, &addr); - udp_pkts++; - } - else + // L2TP and L2TP REMOTE LNS + if (udp_ready[j]) { - udp_ready = 0; - n--; + alen = sizeof(addr); + if ((s = recvfrom(udpfd[j], p, size_bufp, 0, (void *) &addr, &alen)) > 0) + { + processudp(p, s, &addr, j); + udp_pkts[j]++; + } + else + { + udp_ready[j] = 0; + n--; + } } } -#ifdef LAC - // L2TP REMOTE LNS - if (udplac_ready) - { - alen = sizeof(addr); - if ((s = recvfrom(udplacfd, p, size_bufp, 0, (void *) &addr, &alen)) > 0) - { - if (!config->disable_lac_func) - processudp(p, s, &addr); - udplac_pkts++; - } - else - { - udplac_ready = 0; - n--; - } - } -#endif // incoming IP if (tun_ready) { @@ -4311,18 +4291,13 @@ static void mainloop(void) } } - if (udp_pkts > 1 || tun_pkts > 1 || cluster_pkts > 1) + if (udp_pkts[0] > 1 || tun_pkts > 1 || cluster_pkts > 1) STAT(multi_read_used); if (c >= config->multi_read_count) { -#ifdef LAC - LOG(3, 0, 0, "Reached multi_read_count (%d); processed %d udp, %d tun %d cluster %d rmlns and %d pppoe packets\n", - config->multi_read_count, udp_pkts, tun_pkts, cluster_pkts, udplac_pkts, pppoesess_pkts); -#else LOG(3, 0, 0, "Reached multi_read_count (%d); processed %d udp, %d tun %d cluster and %d pppoe packets\n", - config->multi_read_count, udp_pkts, tun_pkts, cluster_pkts, pppoesess_pkts); -#endif + config->multi_read_count, udp_pkts[0], tun_pkts, cluster_pkts, pppoesess_pkts); STAT(multi_read_exceeded); more++; } @@ -4657,9 +4632,7 @@ static void initdata(int optdebug, char *optconfig) } #endif /* BGP */ -#ifdef LAC lac_initremotelnsdata(); -#endif } static int assign_ip_address(sessionidt s) @@ -4946,11 +4919,7 @@ void snoop_send_packet(uint8_t *packet, uint16_t size, in_addr_t destination, ui static int dump_session(FILE **f, sessiont *s) { -#ifdef LAC if (!s->opened || (!s->ip && !s->forwardtosession) || !(s->cin_delta || s->cout_delta) || !*s->user || s->walled_garden) -#else - if (!s->opened || !s->ip || !(s->cin_delta || s->cout_delta) || !*s->user || s->walled_garden) -#endif return 1; if (!*f) @@ -4976,7 +4945,7 @@ static int dump_session(FILE **f, sessiont *s) "# uptime: %ld\n" "# format: username ip qos uptxoctets downrxoctets\n", hostname, - fmtaddr(config->iftun_address ? config->iftun_address : my_address, 0), + fmtaddr(config->iftun_n_address[tunnel[s->tunnel].indexudp] ? config->iftun_n_address[tunnel[s->tunnel].indexudp] : my_address, 0), now, now - basetime); } @@ -5130,7 +5099,26 @@ int main(int argc, char *argv[]) init_pppoe(); LOG(1, 0, 0, "Set up on pppoe interface %s\n", config->pppoe_if_to_bind); } - initudp(); + + if (!config->nbmultiaddress) + { + config->bind_n_address[0] = config->bind_address; + config->nbmultiaddress++; + } + config->nbudpfd = config->nbmultiaddress; + for (i = 0; i < config->nbudpfd; i++) + initudp(&udpfd[i], config->bind_n_address[i]); + initlacudp(); + config->indexlacudpfd = config->nbudpfd; + udpfd[config->indexlacudpfd] = udplacfd; + config->nbudpfd++; + + initcontrol(); + initdae(); + + // Intercept + snoopfd = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP); + initrad(); initippool(); @@ -5362,14 +5350,62 @@ static void update_config() if (!config->radius_dae_port) config->radius_dae_port = DAEPORT; -#ifdef LAC if(!config->bind_portremotelns) config->bind_portremotelns = L2TPLACPORT; if(!config->bind_address_remotelns) config->bind_address_remotelns = INADDR_ANY; -#endif + + if (*config->bind_multi_address) + { + char *sip = config->bind_multi_address; + char *n = sip; + char *e = config->bind_multi_address + strlen(config->bind_multi_address); + config->nbmultiaddress = 0; + + while (*sip && (sip < e)) + { + in_addr_t ip = 0; + uint8_t u = 0; + + while (n < e && (*n == ',' || *n == ' ')) n++; + + while (n < e && (isdigit(*n) || *n == '.')) + { + if (*n == '.') + { + ip = (ip << 8) + u; + u = 0; + } + else + u = u * 10 + *n - '0'; + n++; + } + ip = (ip << 8) + u; + n++; + + if (ip) + { + config->bind_n_address[config->nbmultiaddress] = htonl(ip); + config->iftun_n_address[config->nbmultiaddress] = htonl(ip); + config->nbmultiaddress++; + LOG(1, 0, 0, "Bind address %s\n", fmtaddr(htonl(ip), 0)); + } + + sip = n; + } + + if (config->nbmultiaddress >= 1) + { + config->bind_address = config->bind_n_address[0]; + config->iftun_address = config->bind_address; + } + } + if(!config->iftun_address) + { config->iftun_address = config->bind_address; + config->iftun_n_address[0] = config->iftun_address; + } if (!*config->pppoe_ac_name) strncpy(config->pppoe_ac_name, DEFAULT_PPPOE_AC_NAME, sizeof(config->pppoe_ac_name) - 1); @@ -6427,8 +6463,6 @@ int ip_filter(uint8_t *buf, int len, uint8_t filter) return 0; } -#ifdef LAC - tunnelidt lac_new_tunnel() { return new_tunnel(); @@ -6474,4 +6508,3 @@ void lac_tunnelshutdown(tunnelidt t, char *reason, int result, int error, char * tunnelshutdown(t, reason, result, error, msg); } -#endif