#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.
CONFIG("echo_timeout", echo_timeout, INT),
CONFIG("idle_echo_timeout", idle_echo_timeout, INT),
CONFIG("iftun_address", iftun_address, IPv4),
-#ifdef LAC
+ CONFIG("tundevicename", tundevicename, STRING),
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
- { NULL, 0, 0, 0 },
+ 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 }
};
static char *plugin_functions[] = {
}
// Time in milliseconds
- time_now_ms = (t.tv_sec * 1000) + (t.tv_usec/1000);
+ // TODO FOR MLPPP DEV
+ //time_now_ms = (t.tv_sec * 1000) + (t.tv_usec/1000);
return (t.tv_sec - basetime) * 10 + t.tv_usec / 100000 + 1;
}
int flags = fcntl(tunfd, F_GETFL, 0);
fcntl(tunfd, F_SETFL, flags | O_NONBLOCK);
}
+
+ if (*config->tundevicename)
+ strncpy(ifr.ifr_name, config->tundevicename, IFNAMSIZ);
+
if (ioctl(tunfd, TUNSETIFF, (void *) &ifr) < 0)
{
LOG(0, 0, 0, "Can't set tun interface: %s\n", strerror(errno));
exit(1);
}
- assert(strlen(ifr.ifr_name) < sizeof(config->tundevice) - 1);
- strncpy(config->tundevice, ifr.ifr_name, sizeof(config->tundevice));
+ assert(strlen(ifr.ifr_name) < sizeof(config->tundevicename) - 1);
+ strncpy(config->tundevicename, ifr.ifr_name, sizeof(config->tundevicename));
- tunidx = if_nametoindex(config->tundevice);
+ tunidx = if_nametoindex(config->tundevicename);
if (tunidx == 0)
{
LOG(0, 0, 0, "Can't get tun interface index\n");
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]) {
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));
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));
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);
}
//
return;
}
+ if (t == TUNNEL_ID_PPPOE)
+ {
+ pppoe_sess_send(buf, l, t);
+ return;
+ }
+
if (!tunnel[t].ip)
{
LOG(1, 0, t, "Error sending data out tunnel: no remote endpoint (tunnel not set up)\n");
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;
}
else
{
// Send it as one frame (NO MPPP Frame)
- 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...
+ uint8_t *p = opt_makeppp(buf, len, s, t, PPPIP, 0, 0, 0);
+ tunnelsend(p, len + (buf-p), t); // send it...
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...
+ uint8_t *p = opt_makeppp(buf, len, s, t, PPPIP, 0, 0, 0);
+ tunnelsend(p, len + (buf-p), t); // send it...
update_session_out_stat(s, sp, len);
}
static void control16(controlt * c, uint16_t avp, uint16_t val, uint8_t m)
{
uint16_t l = (m ? 0x8008 : 0x0008);
- 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);
+ *(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->length += 8;
}
static void control32(controlt * c, uint16_t avp, uint32_t val, uint8_t m)
{
uint16_t l = (m ? 0x800A : 0x000A);
- 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);
+ *(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->length += 10;
}
static void controls(controlt * c, uint16_t avp, char *val, uint8_t m)
{
uint16_t l = ((m ? 0x8000 : 0) + strlen(val) + 6);
- 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));
+ *(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->length += 6 + strlen(val);
}
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);
- 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);
+ *(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->length += 6 + len;
}
}
assert(c);
c->next = 0;
- c->buf16[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;
// add a control message to a tunnel, and send if within window
static void controladd(controlt *c, sessionidt far, tunnelidt t)
{
- 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
+ *(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
tunnel[t].ns++; // advance sequence
// link in message in to queue
if (tunnel[t].controlc)
struct param_kill_session data = { &tunnel[session[s].tunnel], &session[s] };
LOG(2, s, session[s].tunnel, "Shutting down session %u: %s\n", s, reason);
run_plugins(PLUGIN_KILL_SESSION, &data);
- session[s].die = TIME + 150; // Clean up in 15 seconds
}
if (session[s].ip && !walled_garden && !session[s].die)
memcpy(&shut_acct[shut_acct_n++], &session[s], sizeof(session[s]));
}
+ if (!session[s].die)
+ session[s].die = TIME + 150; // Clean up in 15 seconds
+
if (session[s].ip)
{ // IP allocated, clear and unroute
int r;
throttle_session(s, 0, 0);
if (cdn_result)
- { // Send CDN
- controlt *c = controlnew(14); // sending CDN
- if (cdn_error)
+ {
+ if (session[s].tunnel == TUNNEL_ID_PPPOE)
{
- uint16_t buf[2];
- buf[0] = htons(cdn_result);
- buf[1] = htons(cdn_error);
- controlb(c, 1, (uint8_t *)buf, 4, 1);
+ pppoe_shutdown_session(s);
}
else
- control16(c, 1, cdn_result, 1);
+ {
+ // Send CDN
+ controlt *c = controlnew(14); // sending CDN
+ if (cdn_error)
+ {
+ 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);
- control16(c, 14, s, 1); // assigned session (our end)
- controladd(c, session[s].far, session[s].tunnel); // send the message
+ control16(c, 14, s, 1); // assigned session (our end)
+ controladd(c, session[s].far, session[s].tunnel); // send the message
+ }
}
// update filter refcounts
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
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;
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);
}
// 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;
STAT(tunnel_rx_errors);
return;
}
+ if (t == TUNNEL_ID_PPPOE)
+ {
+ LOG(1, s, t, "Received UDP packet with tunnel ID reserved for pppoe\n");
+ STAT(tunnel_rx_errors);
+ return;
+ }
if (*buf & 0x08)
{ // ns/nr
ns = ntohs(*(uint16_t *) p);
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;
}
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);
}
break;
case 13: // Response
-#ifdef LAC
if (tunnel[t].isremotelns)
{
chapresponse = calloc(17, 1);
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;
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)
{
{
tunnelshutdown(t, "Shutting down", 6, 0, 0);
}
-#endif /* LAC */
break;
case 3: // SCCN
LOG(3, s, t, "Received SCCN\n");
}
return;
case 11: // ICRP
-#ifdef LAC
LOG(3, s, t, "Received ICRP\n");
if (session[s].forwardtosession)
{
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");
// 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);
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 or Remote LNS session
- lac_session_forward(buf, len, s, proto);
+ // Forward to LAC/BAS or Remote LNS session
+ lac_session_forward(buf, len, s, proto, addr->sin_addr.s_addr, addr->sin_port, indexudpfd);
return;
}
-#endif /* LAC */
+ else if (config->auth_tunnel_change_addr_src)
+ {
+ if (tunnel[t].ip != ntohl(addr->sin_addr.s_addr) &&
+ tunnel[t].port == ntohs(addr->sin_port))
+ {
+ // The remotes BAS are a clustered l2tpns server and the source IP has changed
+ LOG(5, s, t, "The tunnel IP source (%s) has changed by new IP (%s)\n",
+ fmtaddr(htonl(tunnel[t].ip), 0), fmtaddr(addr->sin_addr.s_addr, 0));
+
+ tunnel[t].ip = ntohl(addr->sin_addr.s_addr);
+ }
+ }
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;
}
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)
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;
}
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;
}
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;
}
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
if (t > config->cluster_highest_tunnelid)
t = 1;
+ if (t == TUNNEL_ID_PPPOE)
+ continue;
+
// check for expired tunnels
if (tunnel[t].die && tunnel[t].die <= TIME)
{
// Send hello
if (tunnel[t].state == TUNNELOPEN && !tunnel[t].controlc && (time_now - tunnel[t].lastrec) > 60)
{
- controlt *c = controlnew(6); // sending HELLO
- controladd(c, 0, t); // send the message
- LOG(3, 0, t, "Sending HELLO message\n");
- t_actions++;
+ if (!config->disable_sending_hello)
+ {
+ controlt *c = controlnew(6); // sending HELLO
+ controladd(c, 0, t); // send the message
+ LOG(3, 0, t, "Sending HELLO message\n");
+ t_actions++;
+ }
}
// Check for tunnel changes requested from the CLI
LOG(4, s, session[s].tunnel, "No data in %d seconds, sending LCP ECHO\n",
(int)(time_now - session[s].last_packet));
- tunnelsend(b, 24, session[s].tunnel); // send it
+
+ tunnelsend(b, (q - b) + 8, session[s].tunnel); // send it
sess_local[s].last_echo = time_now;
s_actions++;
}
# include "fake_epoll.h"
#endif
-#ifdef LAC
-// the base set of fds polled: cli, cluster, tun, udp, control, dae, netlink, udplac
-#define BASE_FDS 8
-#else
-// the base set of fds polled: cli, cluster, tun, udp, control, dae, netlink
-#define BASE_FDS 7
-#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
// 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 + 8; // for the hearder of the forwarded MPPP packet (see C_MPPP_FORWARD)
- int size_bufp = sizeof(buf) - 8;
+ uint8_t *p = buf + 32; // for the hearder of the forwarded MPPP packet (see C_MPPP_FORWARD)
+ // and the forwarded pppoe session
+ int size_bufp = sizeof(buf) - 32;
clockt next_cluster_ping = 0; // send initial ping immediately
struct epoll_event events[BASE_FDS + RADIUS_FDS + EXTRA_FDS];
int maxevent = sizeof(events)/sizeof(*events);
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\n",
- clifd, cluster_sockfd, tunfd, udpfd, controlfd, daefd, nlfd, udplacfd);
-#else
- 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);
-#endif
+ 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[0], controlfd, daefd, nlfd, udplacfd, pppoediscfd, pppoesessfd);
/* setup our fds to poll for input */
{
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);
e.data.ptr = &d[i++];
epoll_ctl(epollfd, EPOLL_CTL_ADD, nlfd, &e);
-#ifdef LAC
- d[i].type = FD_TYPE_UDPLAC;
+ d[i].type = FD_TYPE_PPPOEDISC;
e.data.ptr = &d[i++];
- epoll_ctl(epollfd, EPOLL_CTL_ADD, udplacfd, &e);
-#endif
+ epoll_ctl(epollfd, EPOLL_CTL_ADD, pppoediscfd, &e);
+
+ 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
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
// 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
+ s = read(pppoediscfd, p, size_bufp);
+ if (s > 0) process_pppoe_disc(p, s);
+ n--;
+ break;
+
case FD_TYPE_CONTROL: // nsctl commands
alen = sizeof(addr);
- s = recvfromto(controlfd, buf, sizeof(buf), MSG_WAITALL, (struct sockaddr *) &addr, &alen, &local);
- if (s > 0) processcontrol(buf, s, &addr, alen, &local);
+ s = recvfromto(controlfd, p, size_bufp, MSG_WAITALL, (struct sockaddr *) &addr, &alen, &local);
+ if (s > 0) processcontrol(p, s, &addr, alen, &local);
n--;
break;
case FD_TYPE_DAE: // DAE requests
alen = sizeof(addr);
- s = recvfromto(daefd, buf, sizeof(buf), MSG_WAITALL, (struct sockaddr *) &addr, &alen, &local);
- if (s > 0) processdae(buf, s, &addr, alen, &local);
+ s = recvfromto(daefd, p, size_bufp, MSG_WAITALL, (struct sockaddr *) &addr, &alen, &local);
+ if (s > 0) processdae(p, s, &addr, alen, &local);
n--;
break;
case FD_TYPE_RADIUS: // RADIUS response
alen = sizeof(addr);
- s = recvfrom(radfds[d->index], buf, sizeof(buf), MSG_WAITALL, (struct sockaddr *) &addr, &alen);
+ s = recvfrom(radfds[d->index], p, size_bufp, MSG_WAITALL, (struct sockaddr *) &addr, &alen);
if (s >= 0 && config->cluster_iam_master)
{
if (addr.sin_addr.s_addr == config->radiusserver[0] ||
addr.sin_addr.s_addr == config->radiusserver[1])
- processrad(buf, s, d->index);
+ processrad(p, s, d->index);
else
LOG(3, 0, 0, "Dropping RADIUS packet from unknown source %s\n",
fmtaddr(addr.sin_addr.s_addr, 0));
#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 */
case FD_TYPE_NETLINK:
{
- struct nlmsghdr *nh = (struct nlmsghdr *)buf;
- s = netlink_recv(buf, sizeof(buf));
+ struct nlmsghdr *nh = (struct nlmsghdr *)p;
+ s = netlink_recv(p, size_bufp);
if (nh->nlmsg_type == NLMSG_ERROR)
{
struct nlmsgerr *errmsg = NLMSG_DATA(nh);
exit(1);
}
else
-
LOG(0, 0, 0, "Got a netlink error: %s\n", strerror(-errmsg->error));
}
// else it's a ack
}
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);
}
}
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, buf, sizeof(buf), 0, (void *) &addr, &alen)) > 0)
- {
- processudp(buf, 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)
+
+ // incoming IP
+ if (tun_ready)
{
- alen = sizeof(addr);
- if ((s = recvfrom(udplacfd, buf, sizeof(buf), 0, (void *) &addr, &alen)) > 0)
+ if ((s = read(tunfd, p, size_bufp)) > 0)
{
- if (!config->disable_lac_func)
- processudp(buf, s, &addr);
-
- udplac_pkts++;
+ processtun(p, s);
+ tun_pkts++;
}
else
{
- udplac_ready = 0;
+ tun_ready = 0;
n--;
}
}
-#endif
- // incoming IP
- if (tun_ready)
+
+ // pppoe session
+ if (pppoesess_ready)
{
- if ((s = read(tunfd, p, size_bufp)) > 0)
+ if ((s = read(pppoesessfd, p, size_bufp)) > 0)
{
- processtun(p, s);
- tun_pkts++;
+ process_pppoe_sess(p, s);
+ pppoesess_pkts++;
}
else
{
- tun_ready = 0;
+ pppoesess_ready = 0;
n--;
}
}
if (cluster_ready)
{
alen = sizeof(addr);
- if ((s = recvfrom(cluster_sockfd, buf, sizeof(buf), MSG_WAITALL, (void *) &addr, &alen)) > 0)
+ if ((s = recvfrom(cluster_sockfd, p, size_bufp, MSG_WAITALL, (void *) &addr, &alen)) > 0)
{
- processcluster(buf, s, addr.sin_addr.s_addr);
+ processcluster(p, s, addr.sin_addr.s_addr);
cluster_pkts++;
}
else
}
}
- 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 and %d rmlns packets\n",
- config->multi_read_count, udp_pkts, tun_pkts, cluster_pkts, udplac_pkts);
-#else
- LOG(3, 0, 0, "Reached multi_read_count (%d); processed %d udp, %d tun and %d cluster packets\n",
- config->multi_read_count, udp_pkts, tun_pkts, cluster_pkts);
-#endif
+ 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[0], tun_pkts, cluster_pkts, pppoesess_pkts);
STAT(multi_read_exceeded);
more++;
}
}
#endif /* BGP */
-#ifdef LAC
lac_initremotelnsdata();
-#endif
}
static int assign_ip_address(sessionidt s)
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)
"# 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);
}
exit(1);
inittun();
- LOG(1, 0, 0, "Set up on interface %s\n", config->tundevice);
+ LOG(1, 0, 0, "Set up on interface %s\n", config->tundevicename);
+
+ if (*config->pppoe_if_to_bind)
+ {
+ init_pppoe();
+ LOG(1, 0, 0, "Set up on pppoe interface %s\n", config->pppoe_if_to_bind);
+ }
+
+ 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);
- initudp();
initrad();
initippool();
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);
// re-initialise the random number source
initrandom(config->random_device);
if (ip == session[i].ip)
{
- sessionkill(i, "Duplicate IP address");
- cluster_listinvert_session(s, i);
+ sessionshutdown(i, "Duplicate IP address", CDN_ADMIN_DISC, TERM_ADMIN_RESET); // close radius/routes, etc.
continue;
}
// Drop the new session in case of duplicate sessionss, not the old one.
if (!strcasecmp(user, session[i].user))
- sessionkill(i, "Duplicate session for users");
+ sessionshutdown(i, "Duplicate session for users", CDN_ADMIN_DISC, TERM_ADMIN_RESET); // close radius/routes, etc.
}
}
tunnelidt i;
for (i = 1; i < MAXTUNNEL; i++)
{
- if (tunnel[i].state == TUNNELFREE)
+ if ((tunnel[i].state == TUNNELFREE) && (i != TUNNEL_ID_PPPOE))
{
LOG(4, 0, i, "Assigning tunnel ID %u\n", i);
if (i > config->cluster_highest_tunnelid)
return 0;
}
-#ifdef LAC
-
tunnelidt lac_new_tunnel()
{
return new_tunnel();
tunnelshutdown(t, reason, result, error, msg);
}
-#endif
projects / l2tpns.git / blobdiff