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Merge branch 'multibind'

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This commit is contained in:
fendo 2013-03-28 10:35:18 +01:00
commit c1d1c2a8c4
13 changed files with 340 additions and 358 deletions
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18
Docs/manual.html
View file

@ -265,6 +265,24 @@ from the address of "bind_address" (For use in cases of specific configuration).
If no address is given to iftun_address and bind_address, 1.1.1.1 is used.
</LI>
<LI><B>bind_multi_address</B> (ip address)<BR>
This parameter permit to listen several addresss of the l2tp udp protocol
(and set several address to the tun interface).
<BR>
WHEN this parameter is set, It OVERWRITE the parameters "bind_address"
and "iftun_address".
<BR>
these can be interesting when you want do load-balancing in cluster mode
of the uploaded from the LAC. For example you can set a bgp.prepend(MY_AS)
for Address1 on LNS1 and a bgp.prepend(MY_AS) for Address2 on LNS2
(see BGP AS-path prepending).
<BR>
example of use with 2 address:
<BR>
set bind_multi_address "64.14.13.41, 64.14.13.42"
</LI>
<LI><B>tundevicename</B> (string)<BR>
Name of the tun interface (default: "tun0").
</LI>

7
Makefile
View file

@ -26,7 +26,7 @@ INSTALL = install -c -D -o root -g root
l2tpns.LIBS = -lm -lcli -ldl
OBJS = arp.o cli.o cluster.o constants.o control.o icmp.o l2tpns.o \
ll.o md5.o ppp.o radius.o tbf.o util.o pppoe.o
ll.o md5.o ppp.o radius.o tbf.o util.o pppoe.o l2tplac.o
PROGRAMS = l2tpns nsctl
PLUGINS = autosnoop.so autothrottle.so garden.so sessionctl.so \
@ -43,9 +43,6 @@ endif
DEFINES += -DBGP
OBJS += bgp.o
DEFINES += -DLAC
OBJS += l2tplac.o
all: programs plugins
programs: $(PROGRAMS)
plugins: $(PLUGINS)
@ -129,8 +126,8 @@ radius.o: radius.c md5.h constants.h l2tpns.h plugin.h util.h cluster.h \
tbf.o: tbf.c l2tpns.h util.h tbf.h
util.o: util.c l2tpns.h bgp.h
pppoe.o: pppoe.c l2tpns.h cluster.h constants.h md5.h util.h
bgp.o: bgp.c l2tpns.h bgp.h util.h
l2tplac.o: l2tplac.c md5.h l2tpns.h util.h cluster.h l2tplac.h pppoe.h
bgp.o: bgp.c l2tpns.h bgp.h util.h
autosnoop.so: autosnoop.c l2tpns.h plugin.h
autothrottle.so: autothrottle.c l2tpns.h plugin.h
garden.so: garden.c l2tpns.h plugin.h control.h

39
cli.c
View file

@ -31,9 +31,7 @@
#ifdef BGP
#include "bgp.h"
#endif
#ifdef LAC
#include "l2tplac.h"
#endif
extern tunnelt *tunnel;
extern bundlet *bundle;
@ -102,10 +100,8 @@ static int cmd_remove_plugin(struct cli_def *cli, char *command, char **argv, in
static int cmd_uptime(struct cli_def *cli, char *command, char **argv, int argc);
static int cmd_shutdown(struct cli_def *cli, char *command, char **argv, int argc);
static int cmd_reload(struct cli_def *cli, char *command, char **argv, int argc);
#ifdef LAC
static int cmd_setforward(struct cli_def *cli, char *command, char **argv, int argc);
static int cmd_show_rmtlnsconf(struct cli_def *cli, char *command, char **argv, int argc);
#endif
static int regular_stuff(struct cli_def *cli);
@ -156,9 +152,7 @@ void init_cli()
cli_register_command(cli, c, "pool", cmd_show_pool, PRIVILEGE_UNPRIVILEGED, MODE_EXEC, "Show the IP address allocation pool");
cli_register_command(cli, c, "radius", cmd_show_radius, PRIVILEGE_UNPRIVILEGED, MODE_EXEC, "Show active radius queries");
cli_register_command(cli, c, "running-config", cmd_show_run, PRIVILEGE_PRIVILEGED, MODE_EXEC, "Show the currently running configuration");
#ifdef LAC
cli_register_command(cli, c, "remotelns-conf", cmd_show_rmtlnsconf, PRIVILEGE_PRIVILEGED, MODE_EXEC, "Show a list of remote LNS configuration");
#endif
cli_register_command(cli, c, "session", cmd_show_session, PRIVILEGE_UNPRIVILEGED, MODE_EXEC, "Show a list of sessions or details for a single session");
cli_register_command(cli, c, "tbf", cmd_show_tbf, PRIVILEGE_UNPRIVILEGED, MODE_EXEC, "List all token bucket filters in use");
cli_register_command(cli, c, "throttle", cmd_show_throttle, PRIVILEGE_UNPRIVILEGED, MODE_EXEC, "List all throttled sessions and associated TBFs");
@ -231,9 +225,7 @@ void init_cli()
cli_register_command(cli, NULL, "set", cmd_set, PRIVILEGE_PRIVILEGED, MODE_CONFIG, "Set a configuration variable");
#ifdef LAC
cli_register_command(cli, NULL, "setforward", cmd_setforward, PRIVILEGE_PRIVILEGED, MODE_CONFIG, "Set the Remote LNS Forward");
#endif
c = cli_register_command(cli, NULL, "ip", NULL, PRIVILEGE_PRIVILEGED, MODE_CONFIG, NULL);
cli_register_command(cli, c, "access-list", cmd_ip_access_list, PRIVILEGE_PRIVILEGED, MODE_CONFIG, "Add named access-list");
@ -542,15 +534,9 @@ static int cmd_show_session(struct cli_def *cli, char *command, char **argv, int
}
// Show Summary
#ifdef LAC
cli_print(cli, "%5s %7s %4s %-32s %-15s %s %s %s %s %10s %10s %10s %4s %10s %-18s %s",
#else
cli_print(cli, "%5s %4s %-32s %-15s %s %s %s %s %10s %10s %10s %4s %10s %-15s %s",
#endif
"SID",
#ifdef LAC
"LkToSID",
#endif
"TID",
"Username",
"IP",
@ -563,11 +549,7 @@ static int cmd_show_session(struct cli_def *cli, char *command, char **argv, int
"uploaded",
"idle",
"Rem.Time",
#ifdef LAC
"LAC(L)/RLNS(R)/PPPOE(P)",
#else
"LAC(L)/PPPOE(P)",
#endif
"CLI");
for (i = 1; i < MAXSESSION; i++)
@ -578,15 +560,9 @@ static int cmd_show_session(struct cli_def *cli, char *command, char **argv, int
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;
#ifdef LAC
cli_print(cli, "%5d %7d %4d %-32s %-15s %s %s %s %s %10u %10lu %10lu %4u %10lu %3s%-20s %s",
#else
cli_print(cli, "%5d %4d %-32s %-15s %s %s %s %s %10u %10lu %10lu %4u %10lu %3s%-20s %s",
#endif
i,
#ifdef LAC
session[i].forwardtosession,
#endif
session[i].tunnel,
session[i].user[0] ? session[i].user : "*",
fmtaddr(htonl(session[i].ip), 0),
@ -599,11 +575,7 @@ static int cmd_show_session(struct cli_def *cli, char *command, char **argv, int
(unsigned long)session[i].cin,
abs(time_now - (session[i].last_packet ? session[i].last_packet : time_now)),
(unsigned long)(rem_time),
#ifdef LAC
(session[i].tunnel == TUNNEL_ID_PPPOE)?"(P)":(tunnel[session[i].tunnel].isremotelns?"(R)":"(L)"),
#else
(session[i].tunnel == TUNNEL_ID_PPPOE)?"(P)":"(L)",
#endif
(session[i].tunnel == TUNNEL_ID_PPPOE)?fmtMacAddr(session[i].src_hwaddr):fmtaddr(htonl(tunnel[session[i].tunnel].ip), 1),
session[i].calling[0] ? session[i].calling : "*");
}
@ -694,11 +666,7 @@ static int cmd_show_tunnels(struct cli_def *cli, char *command, char **argv, int
fmtaddr(htonl(tunnel[i].ip), 0),
states[tunnel[i].state],
sessions
#ifdef LAC
,(i == TUNNEL_ID_PPPOE)?"Tunnel pppoe":(tunnel[i].isremotelns?"Tunnel To Remote LNS":"Tunnel To LAC")
#else
,(i == TUNNEL_ID_PPPOE)?"Tunnel pppoe":"Tunnel To LAC"
#endif
);
}
@ -1309,13 +1277,11 @@ static int cmd_drop_session(struct cli_def *cli, char *command, char **argv, int
cli_print(cli, "Dropping session %d", s);
cli_session_actions[s].action |= CLI_SESS_KILL;
}
#ifdef LAC
else if (session[s].forwardtosession && session[s].opened && !session[s].die)
{
cli_print(cli, "Dropping session %d", s);
cli_session_actions[s].action |= CLI_SESS_KILL;
}
#endif
else
{
cli_error(cli, "Session %d is not active.", s);
@ -3106,7 +3072,7 @@ static int cmd_show_access_list(struct cli_def *cli, char *command, char **argv,
}
if (i)
cli_print(cli, "");
cli_print(cli, " ");
cli_print(cli, "%s IP access list %s",
ip_filters[f].extended ? "Extended" : "Standard",
@ -3144,8 +3110,6 @@ static int cmd_reload(struct cli_def *cli, char *command, char **argv, int argc)
return CLI_OK;
}
#ifdef LAC
static int cmd_setforward(struct cli_def *cli, char *command, char **argv, int argc)
{
int ret;
@ -3216,4 +3180,3 @@ static int cmd_show_rmtlnsconf(struct cli_def *cli, char *command, char **argv,
return CLI_OK;
}
#endif

22
cluster.c
View file

@ -305,10 +305,11 @@ static int _forward_packet(uint8_t *data, int size, in_addr_t addr, int port, in
// The master just processes the payload as if it had
// received it off the tun device.
//(note: THIS ROUTINE WRITES TO pack[-6]).
int master_forward_packet(uint8_t *data, int size, in_addr_t addr, int port)
int master_forward_packet(uint8_t *data, int size, in_addr_t addr, uint16_t port, uint16_t indexudp)
{
uint8_t *p = data - (3 * sizeof(uint32_t));
uint8_t *psave = p;
uint32_t indexandport = port | ((indexudp << 16) & 0xFFFF0000);
if (!config->cluster_master_address) // No election has been held yet. Just skip it.
return -1;
@ -316,7 +317,7 @@ int master_forward_packet(uint8_t *data, int size, in_addr_t addr, int port)
LOG(4, 0, 0, "Forwarding packet from %s to master (size %d)\n", fmtaddr(addr, 0), size);
STAT(c_forwarded);
add_type(&p, C_FORWARD, addr, (uint8_t *) &port, sizeof(port)); // ick. should be uint16_t
add_type(&p, C_FORWARD, addr, (uint8_t *) &indexandport, sizeof(indexandport));
return peer_send_data(config->cluster_master_address, psave, size + (3 * sizeof(uint32_t)));
}
@ -1503,16 +1504,9 @@ static int cluster_process_heartbeat(uint8_t *data, int size, int more, uint8_t
int i, type;
int hb_ver = more;
#ifdef LAC
#if HB_VERSION != 7
# error "need to update cluster_process_heartbeat()"
#endif
#else
#if HB_VERSION != 6
# error "need to update cluster_process_heartbeat()"
#endif
#endif
// we handle versions 5 through 7
if (hb_ver < 5 || hb_ver > HB_VERSION) {
@ -1726,12 +1720,8 @@ static int cluster_process_heartbeat(uint8_t *data, int size, int more, uint8_t
size = rle_decompress((uint8_t **) &p, s, c, sizeof(c));
s -= (p - orig_p);
#ifdef LAC
if ( ((hb_ver >= HB_VERSION) && (size != sizeof(tunnelt))) ||
((hb_ver < HB_VERSION) && (size > sizeof(tunnelt))) )
#else
if (size != sizeof(tunnelt) )
#endif
{ // Ouch! Very very bad!
LOG(0, 0, 0, "DANGER: Received a CTUNNEL that didn't decompress correctly!\n");
// Now what? Should exit! No-longer up to date!
@ -1854,9 +1844,11 @@ int processcluster(uint8_t *data, int size, in_addr_t addr)
else
{
struct sockaddr_in a;
uint16_t indexudp;
a.sin_addr.s_addr = more;
a.sin_port = *(int *) p;
a.sin_port = (*(int *) p) & 0xFFFF;
indexudp = ((*(int *) p) >> 16) & 0xFFFF;
s -= sizeof(int);
p += sizeof(int);
@ -1871,7 +1863,7 @@ int processcluster(uint8_t *data, int size, in_addr_t addr)
processdae(p, s, &a, sizeof(a), &local);
}
else
processudp(p, s, &a);
processudp(p, s, &a, indexudp);
return 0;
}

6
cluster.h
View file

@ -26,11 +26,7 @@
#define C_MPPP_FORWARD 19 // MPPP Forwarded packet..
#define C_PPPOE_FORWARD 20 // PPPOE Forwarded packet..
#ifdef LAC
#define HB_VERSION 7 // Protocol version number..
#else
#define HB_VERSION 6 // Protocol version number..
#endif
#define HB_MAX_SEQ (1<<30) // Maximum sequence number. (MUST BE A POWER OF 2!)
#define HB_HISTORY_SIZE 64 // How many old heartbeats we remember?? (Must be a factor of HB_MAX_SEQ)
@ -86,7 +82,7 @@ int processcluster(uint8_t *buf, int size, in_addr_t addr);
int cluster_send_session(int sid);
int cluster_send_bundle(int bid);
int cluster_send_tunnel(int tid);
int master_forward_packet(uint8_t *data, int size, in_addr_t addr, int port);
int master_forward_packet(uint8_t *data, int size, in_addr_t addr, uint16_t port, uint16_t indexudp);
int master_forward_dae_packet(uint8_t *data, int size, in_addr_t addr, int port);
int master_throttle_packet(int tid, uint8_t *data, int size);
int master_garden_packet(sessionidt s, uint8_t *data, int size);

5
l2tplac.c
View file

@ -295,6 +295,7 @@ static int lac_create_tunnelsession(tunnelidt t, sessionidt s, confrlnsidt i_con
tunnel[t].port = pconfigrlns[i_conf].port;
tunnel[t].window = 4; // default window
tunnel[t].isremotelns = i_conf;
tunnel[t].indexudp = config->indexlacudpfd;
STAT(tunnel_created);
random_data(pconfigrlns[i_conf].auth, sizeof(pconfigrlns[i_conf].auth));
@ -449,7 +450,7 @@ void lac_calc_rlns_auth(tunnelidt t, uint8_t id, uint8_t *out)
}
// Forward session to LAC or Remote LNS
int lac_session_forward(uint8_t *buf, int len, sessionidt sess, uint16_t proto, in_addr_t s_addr, int sin_port)
int lac_session_forward(uint8_t *buf, int len, sessionidt sess, uint16_t proto, in_addr_t s_addr, int sin_port, uint16_t indexudpfd)
{
uint16_t t = 0, s = 0;
uint8_t *p = buf + 2; // First word L2TP options
@ -482,7 +483,7 @@ int lac_session_forward(uint8_t *buf, int len, sessionidt sess, uint16_t proto,
(proto == PPPCCP) )
{
session[sess].last_packet = time_now;
master_forward_packet(buf, len, s_addr, sin_port);
master_forward_packet(buf, len, s_addr, sin_port, indexudpfd);
return 1;
}
}

2
l2tplac.h
View file

@ -12,7 +12,7 @@ typedef uint16_t confrlnsidt;
// l2tplac.c
void lac_initremotelnsdata();
int lac_session_forward(uint8_t *buf, int len, sessionidt sess, uint16_t proto, in_addr_t s_addr, int sin_port);
int lac_session_forward(uint8_t *buf, int len, sessionidt sess, uint16_t proto, in_addr_t s_addr, int sin_port, uint16_t indexudpfd);
int lac_conf_forwardtoremotelns(sessionidt s, char * puser);
void lac_calc_rlns_auth(tunnelidt t, uint8_t id, uint8_t *out);
int lac_addremotelns(char *mask, char *IP_RemoteLNS, char *Port_RemoteLNS, char *SecretRemoteLNS);

371
l2tpns.c
View file

@ -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 }
};
@ -762,6 +755,19 @@ static void inittun(void)
req.ifmsg.ifaddr.ifa_scope = RT_SCOPE_UNIVERSE;
req.ifmsg.ifaddr.ifa_index = tunidx;
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
{
if (config->iftun_address)
ip = config->iftun_address;
else
@ -770,6 +776,9 @@ static void inittun(void)
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]) {
@ -839,56 +848,12 @@ 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
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));
{
int flags = fcntl(udpfd, F_GETFL, 0);
fcntl(udpfd, F_SETFL, flags | O_NONBLOCK);
}
if (bind(udpfd, (struct sockaddr *) &addr, sizeof(addr)) < 0)
{
LOG(0, 0, 0, "Error in UDP bind: %s\n", strerror(errno));
exit(1);
}
// Control
memset(&addr, 0, sizeof(addr));
addr.sin_family = AF_INET;
addr.sin_port = htons(NSCTL_PORT);
controlfd = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
setsockopt(controlfd, SOL_SOCKET, SO_REUSEADDR, &on, sizeof(on));
setsockopt(controlfd, SOL_IP, IP_PKTINFO, &on, sizeof(on)); // recvfromto
if (bind(controlfd, (struct sockaddr *) &addr, sizeof(addr)) < 0)
{
LOG(0, 0, 0, "Error in control bind: %s\n", strerror(errno));
exit(1);
}
// Dynamic Authorization Extensions to RADIUS
memset(&addr, 0, sizeof(addr));
addr.sin_family = AF_INET;
addr.sin_port = htons(config->radius_dae_port);
daefd = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
setsockopt(daefd, SOL_SOCKET, SO_REUSEADDR, &on, sizeof(on));
setsockopt(daefd, SOL_IP, IP_PKTINFO, &on, sizeof(on)); // recvfromto
if (bind(daefd, (struct sockaddr *) &addr, sizeof(addr)) < 0)
{
LOG(0, 0, 0, "Error in DAE bind: %s\n", strerror(errno));
exit(1);
}
#ifdef LAC
// Tunnel to Remote LNS
memset(&addr, 0, sizeof(addr));
addr.sin_family = AF_INET;
@ -905,10 +870,70 @@ static void initudp(void)
LOG(0, 0, 0, "Error in UDP REMOTE LNS bind: %s\n", strerror(errno));
exit(1);
}
#endif
}
// Intercept
snoopfd = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
// set up control ports
static void initcontrol(void)
{
int on = 1;
struct sockaddr_in addr;
// Control
memset(&addr, 0, sizeof(addr));
addr.sin_family = AF_INET;
addr.sin_port = htons(NSCTL_PORT);
controlfd = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
setsockopt(controlfd, SOL_SOCKET, SO_REUSEADDR, &on, sizeof(on));
setsockopt(controlfd, SOL_IP, IP_PKTINFO, &on, sizeof(on)); // recvfromto
if (bind(controlfd, (struct sockaddr *) &addr, sizeof(addr)) < 0)
{
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));
addr.sin_family = AF_INET;
addr.sin_port = htons(config->radius_dae_port);
daefd = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
setsockopt(daefd, SOL_SOCKET, SO_REUSEADDR, &on, sizeof(on));
setsockopt(daefd, SOL_IP, IP_PKTINFO, &on, sizeof(on)); // recvfromto
if (bind(daefd, (struct sockaddr *) &addr, sizeof(addr)) < 0)
{
LOG(0, 0, 0, "Error in DAE bind: %s\n", strerror(errno));
exit(1);
}
}
// 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(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((*pudpfd), F_GETFL, 0);
fcntl((*pudpfd), F_SETFL, flags | O_NONBLOCK);
}
if (bind((*pudpfd), (struct sockaddr *) &addr, sizeof(addr)) < 0)
{
LOG(0, 0, 0, "Error in UDP bind: %s\n", strerror(errno));
exit(1);
}
}
//
@ -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;
}
@ -2208,7 +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
@ -2272,7 +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;
@ -2282,7 +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);
@ -2388,7 +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;
@ -2479,7 +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;
}
@ -2529,6 +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);
@ -2800,7 +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);
@ -2808,7 +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;
@ -3054,7 +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)
{
@ -3085,7 +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");
@ -3163,7 +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)
{
@ -3179,7 +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");
@ -3195,7 +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);
@ -3253,12 +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)
@ -3273,14 +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;
}
@ -3292,37 +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)
@ -3336,7 +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;
}
@ -3354,7 +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;
}
@ -3371,7 +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;
}
@ -3380,7 +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
@ -3949,13 +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
@ -3967,7 +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
@ -3982,13 +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 */
{
@ -4013,10 +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);
@ -4029,12 +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);
@ -4042,6 +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
@ -4103,16 +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
@ -4146,10 +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
@ -4210,7 +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
@ -4232,40 +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++)
{
// L2TP and L2TP REMOTE LNS
if (udp_ready[j])
{
alen = sizeof(addr);
if ((s = recvfrom(udpfd, p, size_bufp, 0, (void *) &addr, &alen)) > 0)
if ((s = recvfrom(udpfd[j], p, size_bufp, 0, (void *) &addr, &alen)) > 0)
{
processudp(p, s, &addr);
udp_pkts++;
processudp(p, s, &addr, j);
udp_pkts[j]++;
}
else
{
udp_ready = 0;
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)
{
@ -4313,18 +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++;
}
@ -4659,9 +4632,7 @@ static void initdata(int optdebug, char *optconfig)
}
#endif /* BGP */
#ifdef LAC
lac_initremotelnsdata();
#endif
}
static int assign_ip_address(sessionidt s)
@ -4948,11 +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)
@ -4978,7 +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);
}
@ -5132,7 +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();
@ -5364,14 +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->iftun_address)
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);
@ -6429,8 +6463,6 @@ int ip_filter(uint8_t *buf, int len, uint8_t filter)
return 0;
}
#ifdef LAC
tunnelidt lac_new_tunnel()
{
return new_tunnel();
@ -6476,4 +6508,3 @@ void lac_tunnelshutdown(tunnelidt t, char *reason, int result, int error, char *
tunnelshutdown(t, reason, result, error, msg);
}
#endif

38
l2tpns.h
View file

@ -66,6 +66,13 @@
// it's not expected to have a space for more than 10 unassembled packets = 10 * MAXBUNDLESES
#define MAXFRAGNUM_MASK (MAXFRAGNUM - 1) // Must be equal to MAXFRAGNUM-1
// Multi bind address constants
#define MAX_UDPFD 4
#define MAX_BINDADDR MAX_UDPFD
// 4 + 1 for the udplac
#define INIT_TABUDPFD {-1, -1, -1, -1, -1}
#define INIT_TABUDPVAR {0, 0, 0, 0, 0}
// Constants
#ifndef ETCDIR
#define ETCDIR "/etc/l2tpns"
@ -322,14 +329,9 @@ typedef struct
char class[MAXCLASS];
uint8_t ipv6prefixlen; // IPv6 route prefix length
struct in6_addr ipv6route; // Static IPv6 route
#ifdef LAC
sessionidt forwardtosession; // LNS id_session to forward
uint8_t src_hwaddr[ETH_ALEN]; // MAC addr source (for pppoe sessions 6 bytes)
char reserved[4]; // Space to expand structure without changing HB_VERSION
#else
uint8_t src_hwaddr[ETH_ALEN]; // MAC addr source (for pppoe sessions 6 bytes)
char reserved[6]; // Space to expand structure without changing HB_VERSION
#endif
}
sessiont;
@ -449,12 +451,9 @@ typedef struct
uint16_t controlc; // outstaind messages in queue
controlt *controls; // oldest message
controlt *controle; // newest message
#ifdef LAC
uint16_t isremotelns; // != 0 if the tunnel is to remote LNS (== index on the conf remote lns)
char reserved[14]; // Space to expand structure without changing HB_VERSION
#else
char reserved[16]; // Space to expand structure without changing HB_VERSION
#endif
uint16_t indexudp; // Index UDP file handle (in udpfd[])
char reserved[12]; // Space to expand structure without changing HB_VERSION
}
tunnelt;
@ -765,19 +764,23 @@ typedef struct
int idle_echo_timeout; // Time between last packet seen and
// Drop sessions who have not responded within IDLE_ECHO_TIMEOUT seconds
in_addr_t iftun_address;
#ifdef LAC
int disable_lac_func;
int auth_tunnel_change_addr_src;
int highest_rlnsid;
uint16_t bind_portremotelns;
in_addr_t bind_address_remotelns;
#endif
char pppoe_if_to_bind[IFNAMSIZ]; // Name pppoe interface to bind
char pppoe_service_name[64]; // pppoe service name
char pppoe_ac_name[64];
uint8_t pppoe_hwaddr[ETH_ALEN]; // MAC addr of interface pppoe to bind
int disable_sending_hello; // Disable l2tp sending HELLO message for Apple compatibility.
int disable_no_spoof; // Disable no spoof (permit load balancing client --> internet)
int nbudpfd; // number UDP file handle
int nbmultiaddress; // number multi address to bind
int indexlacudpfd; // Index UDP LAC file handle (in udpfd[])
in_addr_t bind_n_address[MAX_BINDADDR];
in_addr_t iftun_n_address[MAX_BINDADDR];
char bind_multi_address[256];
} configt;
enum config_typet { INT, STRING, UNSIGNED_LONG, SHORT, BOOL, IPv4, IPv6 };
@ -913,9 +916,7 @@ void radiusretry(uint16_t r);
uint16_t radiusnew(sessionidt s);
void radiusclear(uint16_t r, sessionidt s);
void processdae(uint8_t *buf, int len, struct sockaddr_in *addr, int alen, struct in_addr *local);
#ifdef LAC
int rad_tunnel_pwdecode(uint8_t *pl2tpsecret, size_t *pl2tpsecretlen, const char *radiussecret, const uint8_t * auth);
#endif
// l2tpns.c
clockt backoff(uint8_t try);
@ -935,7 +936,7 @@ int tun_write(uint8_t *data, int size);
void adjust_tcp_mss(sessionidt s, tunnelidt t, uint8_t *buf, int len, uint8_t *tcp);
void sendipcp(sessionidt s, tunnelidt t);
void sendipv6cp(sessionidt s, tunnelidt t);
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);
void processipout(uint8_t *buf, int len);
void snoop_send_packet(uint8_t *packet, uint16_t size, in_addr_t destination, uint16_t port);
int find_filter(char const *name, size_t len);
@ -943,13 +944,11 @@ int ip_filter(uint8_t *buf, int len, uint8_t filter);
int cmd_show_ipcache(struct cli_def *cli, char *command, char **argv, int argc);
int cmd_show_hist_idle(struct cli_def *cli, char *command, char **argv, int argc);
int cmd_show_hist_open(struct cli_def *cli, char *command, char **argv, int argc);
#ifdef LAC
tunnelidt lac_new_tunnel();
void lac_tunnelclear(tunnelidt t);
void lac_send_SCCRQ(tunnelidt t, uint8_t * auth, unsigned int auth_len);
void lac_send_ICRQ(tunnelidt t, sessionidt s);
void lac_tunnelshutdown(tunnelidt t, char *reason, int result, int error, char *msg);
#endif
#undef LOG
#undef LOG_HEX
@ -1009,13 +1008,10 @@ struct event_data {
FD_TYPE_RADIUS,
FD_TYPE_BGP,
FD_TYPE_NETLINK,
#ifdef LAC
FD_TYPE_UDPLAC,
#endif
FD_TYPE_PPPOEDISC,
FD_TYPE_PPPOESESS
} type;
int index; // for RADIUS, BGP
int index; // for RADIUS, BGP, UDP
};
#define TIME (config->current_time)

6
ppp.c
View file

@ -12,9 +12,7 @@
#include "tbf.h"
#include "cluster.h"
#ifdef LAC
#include "l2tplac.h"
#endif
#include "pppoe.h"
extern tunnelt *tunnel;
@ -105,13 +103,11 @@ void processpap(sessionidt s, tunnelidt t, uint8_t *p, uint16_t l)
LOG(3, s, t, "PAP login %s/%s\n", user, pass);
}
#ifdef LAC
if ((!config->disable_lac_func) && lac_conf_forwardtoremotelns(s, user))
{
// Creating a tunnel/session has been started
return;
}
#endif
if (session[s].ip || !(r = radiusnew(s)))
{
@ -264,7 +260,6 @@ void processchap(sessionidt s, tunnelidt t, uint8_t *p, uint16_t l)
packet.username = calloc(l + 1, 1);
memcpy(packet.username, p, l);
#ifdef LAC
if ((!config->disable_lac_func) && lac_conf_forwardtoremotelns(s, packet.username))
{
free(packet.username);
@ -272,7 +267,6 @@ void processchap(sessionidt s, tunnelidt t, uint8_t *p, uint16_t l)
// Creating a tunnel/session has been started
return;
}
#endif
run_plugins(PLUGIN_PRE_AUTH, &packet);
if (!packet.continue_auth)

4
pppoe.c
View file

@ -902,7 +902,6 @@ void process_pppoe_disc(uint8_t *pack, int size)
}
}
#ifdef LAC
// Forward from pppoe to l2tp remote LNS
static void pppoe_forwardto_session_rmlns(uint8_t *pack, int size, sessionidt sess, uint16_t proto)
{
@ -1036,7 +1035,6 @@ void pppoe_forwardto_session_pppoe(uint8_t *pack, int size, sessionidt sess, uin
tunnelsend(p, lpppoe, t); // send it....
}
#endif
void process_pppoe_sess(uint8_t *pack, int size)
{
@ -1101,13 +1099,11 @@ void process_pppoe_sess(uint8_t *pack, int size)
lppp -= 2;
}
#ifdef LAC
if (session[sid].forwardtosession)
{ // Must be forwaded to a remote lns tunnel l2tp
pppoe_forwardto_session_rmlns(pack, size, sid, proto);
return;
}
#endif
if (proto == PPPPAP)
{

13
radius.c
View file

@ -19,9 +19,7 @@
#include "util.h"
#include "cluster.h"
#ifdef LAC
#include "l2tplac.h"
#endif
#include "pppoe.h"
extern radiust *radius;
@ -537,9 +535,7 @@ void processrad(uint8_t *buf, int len, char socket_index)
uint8_t routes = 0;
int r_code;
int r_id;
#ifdef LAC
int OpentunnelReq = 0;
#endif
CSTAT(processrad);
@ -641,11 +637,10 @@ void processrad(uint8_t *buf, int len, char socket_index)
// Extract IP, routes, etc
uint8_t *p = buf + 20;
uint8_t *e = buf + len;
#ifdef LAC
uint8_t tag;
uint8_t strtemp[256];
lac_reset_rad_tag_tunnel_ctxt();
#endif
for (; p + 2 <= e && p[1] && p + p[1] <= e; p += p[1])
{
if (*p == 26 && p[1] >= 7)
@ -840,7 +835,6 @@ void processrad(uint8_t *buf, int len, char socket_index)
session[s].classlen = MAXCLASS;
memcpy(session[s].class, p + 2, session[s].classlen);
}
#ifdef LAC
else if (*p == 64)
{
// Tunnel-Type
@ -929,7 +923,6 @@ void processrad(uint8_t *buf, int len, char socket_index)
// Fill context
lac_set_rad_tag_tunnel_assignment_id(tag, (char *) strtemp);
}
#endif
}
}
else if (r_code == AccessReject)
@ -939,7 +932,6 @@ void processrad(uint8_t *buf, int len, char socket_index)
break;
}
#ifdef LAC
if ((!config->disable_lac_func) && OpentunnelReq)
{
char assignment_id[256];
@ -996,7 +988,6 @@ void processrad(uint8_t *buf, int len, char socket_index)
LOG(3, s, session[s].tunnel, " PAP User %s authentication %s.\n", session[s].user,
(r_code == AccessAccept) ? "allowed" : "denied");
}
#endif
if (!session[s].dns1 && config->default_dns1)
{
@ -1341,7 +1332,6 @@ void processdae(uint8_t *buf, int len, struct sockaddr_in *addr, int alen, struc
LOG(0, 0, 0, "Error sending DAE response packet: %s\n", strerror(errno));
}
#ifdef LAC
// Decrypte the encrypted Tunnel Password.
// Defined in RFC-2868.
// the pl2tpsecret buffer must set to 256 characters.
@ -1432,4 +1422,3 @@ int rad_tunnel_pwdecode(uint8_t *pl2tpsecret, size_t *pl2tpsecretlen,
return decodedlen;
};
#endif /* LAC */

13
util.c
View file

@ -51,8 +51,10 @@ void *shared_malloc(unsigned int size)
}
extern int forked;
extern int cluster_sockfd, tunfd, udpfd, controlfd, daefd, snoopfd, ifrfd, ifr6fd, rand_fd;
extern int cluster_sockfd, tunfd, controlfd, daefd, snoopfd, ifrfd, ifr6fd, rand_fd;
extern int pppoediscfd, pppoesessfd;
extern int *radfds;
extern int udpfd[MAX_UDPFD + 1];
pid_t fork_and_close()
{
@ -86,7 +88,14 @@ pid_t fork_and_close()
if (clifd != -1) close(clifd);
if (cluster_sockfd != -1) close(cluster_sockfd);
if (tunfd != -1) close(tunfd);
if (udpfd != -1) close(udpfd);
for (i = 0; i < config->nbudpfd; i++)
{
if (udpfd[i] != -1) close(udpfd[i]);
}
if (pppoediscfd != -1) close(pppoediscfd);
if (pppoediscfd != -1) close(pppoediscfd);
if (controlfd != -1) close(controlfd);
if (daefd != -1) close(daefd);
if (snoopfd != -1) close(snoopfd);