better cluster master collision resolution

[l2tpns.git] / l2tpns.c

diff --git a/l2tpns.c b/l2tpns.c
index cf7ef18..488287f 100644 (file)
--- a/l2tpns.c
+++ b/l2tpns.c
@@ -4,7 +4,7 @@
 // Copyright (c) 2002 FireBrick (Andrews & Arnold Ltd / Watchfront Ltd) - GPL licenced
 // vim: sw=8 ts=8
 
 // Copyright (c) 2002 FireBrick (Andrews & Arnold Ltd / Watchfront Ltd) - GPL licenced
 // vim: sw=8 ts=8
 

-char const *cvs_id_l2tpns = "$Id: l2tpns.c,v 1.48 2004-11-11 03:07:42 bodea Exp $";
+char const *cvs_id_l2tpns = "$Id: l2tpns.c,v 1.61 2004-11-29 03:55:21 bodea Exp $";

 
 #include <arpa/inet.h>
 #include <assert.h>
 
 #include <arpa/inet.h>
 #include <assert.h>


@@ -54,42 +54,43 @@ char const *cvs_id_l2tpns = "$Id: l2tpns.c,v 1.48 2004-11-11 03:07:42 bodea Exp
 #endif /* BGP */
 
 // Globals
 #endif /* BGP */
 
 // Globals

-struct configt *config = NULL; // all configuration
+configt *config = NULL;                // all configuration

 int tunfd = -1;                        // tun interface file handle. (network device)
 int udpfd = -1;                        // UDP file handle
 int controlfd = -1;            // Control signal handle
 int tunfd = -1;                        // tun interface file handle. (network device)
 int udpfd = -1;                        // UDP file handle
 int controlfd = -1;            // Control signal handle

+int clifd = -1;                        // Socket listening for CLI connections.

 int snoopfd = -1;              // UDP file handle for sending out intercept data
 int *radfds = NULL;            // RADIUS requests file handles
 int ifrfd = -1;                        // File descriptor for routing, etc
 time_t basetime = 0;           // base clock
 char hostname[1000] = "";      // us.
 int snoopfd = -1;              // UDP file handle for sending out intercept data
 int *radfds = NULL;            // RADIUS requests file handles
 int ifrfd = -1;                        // File descriptor for routing, etc
 time_t basetime = 0;           // base clock
 char hostname[1000] = "";      // us.

-int tunidx;                    // ifr_ifindex of tun device
-u32 sessionid = 0;             // session id for radius accounting
-int syslog_log = 0;            // are we logging to syslog
-FILE *log_stream = NULL;       // file handle for direct logging (i.e. direct into file, not via syslog).
+static u32 sessionid = 0;      // session id for radius accounting
+static int syslog_log = 0;     // are we logging to syslog
+static FILE *log_stream = NULL;        // file handle for direct logging (i.e. direct into file, not via syslog).

 extern int cluster_sockfd;     // Intra-cluster communications socket.
 u32 last_id = 0;               // Last used PPP SID. Can I kill this?? -- mo
 extern int cluster_sockfd;     // Intra-cluster communications socket.
 u32 last_id = 0;               // Last used PPP SID. Can I kill this?? -- mo

-int clifd = 0;                 // Socket listening for CLI connections.

 
 struct cli_session_actions *cli_session_actions = NULL;        // Pending session changes requested by CLI
 struct cli_tunnel_actions *cli_tunnel_actions = NULL;  // Pending tunnel changes required by CLI
 
 static void *ip_hash[256];     // Mapping from IP address to session structures.
 
 
 struct cli_session_actions *cli_session_actions = NULL;        // Pending session changes requested by CLI
 struct cli_tunnel_actions *cli_tunnel_actions = NULL;  // Pending tunnel changes required by CLI
 
 static void *ip_hash[256];     // Mapping from IP address to session structures.
 

-u32 udp_tx = 0, udp_rx = 0, udp_rx_pkt = 0;    // Global traffic counters.
-u32 eth_tx = 0, eth_rx = 0, eth_rx_pkt = 0;
-u32 ip_pool_size = 1;          // Size of the pool of addresses used for dynamic address allocation.
-time_t time_now = 0;           // Current time in seconds since epoch.
-char time_now_string[64] = {0};        // Current time as a string.
-char main_quit = 0;            // True if we're in the process of exiting.
-char *_program_name = NULL;
+// Traffic counters.
+static u32 udp_rx = 0, udp_rx_pkt = 0, udp_tx = 0;
+static u32 eth_rx = 0, eth_rx_pkt = 0;
+u32 eth_tx = 0;
+
+static u32 ip_pool_size = 1;           // Size of the pool of addresses used for dynamic address allocation.
+time_t time_now = 0;                   // Current time in seconds since epoch.
+static char time_now_string[64] = {0}; // Current time as a string.
+static char main_quit = 0;             // True if we're in the process of exiting.

 linked_list *loaded_plugins;
 linked_list *plugins[MAX_PLUGIN_TYPES];
 
 #define membersize(STRUCT, MEMBER) sizeof(((STRUCT *)0)->MEMBER)
 linked_list *loaded_plugins;
 linked_list *plugins[MAX_PLUGIN_TYPES];
 
 #define membersize(STRUCT, MEMBER) sizeof(((STRUCT *)0)->MEMBER)

-#define CONFIG(NAME, MEMBER, TYPE) { NAME, offsetof(struct configt, MEMBER), membersize(struct configt, MEMBER), TYPE }
+#define CONFIG(NAME, MEMBER, TYPE) { NAME, offsetof(configt, MEMBER), membersize(configt, MEMBER), TYPE }

 
 

-struct config_descriptt config_values[] = {
+config_descriptt config_values[] = {

        CONFIG("debug", debug, INT),
        CONFIG("log_file", log_filename, STRING),
        CONFIG("pid_file", pid_file, STRING),
        CONFIG("debug", debug, INT),
        CONFIG("log_file", log_filename, STRING),
        CONFIG("pid_file", pid_file, STRING),


@@ -123,7 +124,7 @@ struct config_descriptt config_values[] = {
        { NULL, 0, 0, 0 },
 };
 
        { NULL, 0, 0, 0 },
 };
 

-char *plugin_functions[] = {
+static char *plugin_functions[] = {

        NULL,
        "plugin_pre_auth",
        "plugin_post_auth",
        NULL,
        "plugin_pre_auth",
        "plugin_post_auth",


@@ -145,30 +146,37 @@ sessiont *session = NULL;         // Array of session structures.
 sessioncountt *sess_count = NULL;      // Array of partial per-session traffic counters.
 radiust *radius = NULL;                        // Array of radius structures.
 ippoolt *ip_address_pool = NULL;       // Array of dynamic IP addresses.
 sessioncountt *sess_count = NULL;      // Array of partial per-session traffic counters.
 radiust *radius = NULL;                        // Array of radius structures.
 ippoolt *ip_address_pool = NULL;       // Array of dynamic IP addresses.

-controlt *controlfree = 0;
+ip_filtert *ip_filters = NULL; // Array of named filters.
+static controlt *controlfree = 0;

 struct Tstats *_statistics = NULL;
 #ifdef RINGBUFFER
 struct Tringbuffer *ringbuffer = NULL;
 #endif
 
 struct Tstats *_statistics = NULL;
 #ifdef RINGBUFFER
 struct Tringbuffer *ringbuffer = NULL;
 #endif
 

-void sigalrm_handler(int);
-void sighup_handler(int);
-void sigterm_handler(int);
-void sigquit_handler(int);
-void sigchild_handler(int);
-void read_config_file();
-void read_state();
-void dump_state();
-void tunnel_clean();
-tunnelidt new_tunnel();
-void update_config();
-int unhide_avp(u8 *avp, tunnelidt t, sessionidt s, u16 length);
-

 static void cache_ipmap(ipt ip, int s);
 static void uncache_ipmap(ipt ip);
 static void cache_ipmap(ipt ip, int s);
 static void uncache_ipmap(ipt ip);

+static void free_ip_address(sessionidt s);
+static void dump_acct_info(void);
+static void sighup_handler(int sig);
+static void sigalrm_handler(int sig);
+static void sigterm_handler(int sig);
+static void sigquit_handler(int sig);
+static void sigchild_handler(int sig);
+static void read_state(void);
+static void dump_state(void);
+static void build_chap_response(char *challenge, u8 id, u16 challenge_length, char **challenge_response);
+static void update_config(void);
+static void read_config_file(void);
+static void initplugins(void);
+static int add_plugin(char *plugin_name);
+static int remove_plugin(char *plugin_name);
+static void plugins_done(void);
+static void processcontrol(u8 * buf, int len, struct sockaddr_in *addr, int alen);
+static tunnelidt new_tunnel(void);
+static int unhide_avp(u8 *avp, tunnelidt t, sessionidt s, u16 length);

 
 // return internal time (10ths since process startup)
 
 // return internal time (10ths since process startup)

-clockt now(void)
+static clockt now(void)

 {
        struct timeval t;
        gettimeofday(&t, 0);
 {
        struct timeval t;
        gettimeofday(&t, 0);


@@ -186,9 +194,9 @@ clockt backoff(u8 try)
 
 
 //
 
 
 //

-// Log a debug message.  Typically called vias LOG macro
+// Log a debug message.  Typically called via the LOG macro

 //
 //

-void _log(int level, ipt address, sessionidt s, tunnelidt t, const char *format, ...)
+void _log(int level, sessionidt s, tunnelidt t, const char *format, ...)

 {
        static char message[65536] = {0};
        static char message2[65536] = {0};
 {
        static char message[65536] = {0};
        static char message2[65536] = {0};


@@ -204,7 +212,6 @@ void _log(int level, ipt address, sessionidt s, tunnelidt t, const char *format,
                                ringbuffer->head = 0;
 
                ringbuffer->buffer[ringbuffer->tail].level = level;
                                ringbuffer->head = 0;
 
                ringbuffer->buffer[ringbuffer->tail].level = level;

-               ringbuffer->buffer[ringbuffer->tail].address = address;

                ringbuffer->buffer[ringbuffer->tail].session = s;
                ringbuffer->buffer[ringbuffer->tail].tunnel = t;
                va_start(ap, format);
                ringbuffer->buffer[ringbuffer->tail].session = s;
                ringbuffer->buffer[ringbuffer->tail].tunnel = t;
                va_start(ap, format);


@@ -241,7 +248,7 @@ void _log_hex(int level, const char *title, const char *data, int maxsize)
        // No support for _log_hex to syslog
        if (log_stream)
        {
        // No support for _log_hex to syslog
        if (log_stream)
        {

-               _log(level, 0, 0, 0, "%s (%d bytes):\n", title, maxsize);
+               _log(level, 0, 0, "%s (%d bytes):\n", title, maxsize);

                setvbuf(log_stream, NULL, _IOFBF, 16384);
 
                for (i = 0; i < maxsize; )
                setvbuf(log_stream, NULL, _IOFBF, 16384);
 
                for (i = 0; i < maxsize; )


@@ -286,12 +293,12 @@ void _log_hex(int level, const char *title, const char *data, int maxsize)
 // Add a route
 //
 // This adds it to the routing table, advertises it
 // Add a route
 //
 // This adds it to the routing table, advertises it

-// via iBGP if enabled, and stuffs it into the
+// via BGP if enabled, and stuffs it into the

 // 'sessionbyip' cache.
 //
 // 'ip' and 'mask' must be in _host_ order.
 //
 // 'sessionbyip' cache.
 //
 // 'ip' and 'mask' must be in _host_ order.
 //

-void routeset(sessionidt s, ipt ip, ipt mask, ipt gw, u8 add)
+static void routeset(sessionidt s, ipt ip, ipt mask, ipt gw, u8 add)

 {
        struct rtentry r;
        int i;
 {
        struct rtentry r;
        int i;


@@ -314,14 +321,12 @@ void routeset(sessionidt s, ipt ip, ipt mask, ipt gw, u8 add)
        else if (mask == 0xffffffff)
                r.rt_flags |= RTF_HOST;
 
        else if (mask == 0xffffffff)
                r.rt_flags |= RTF_HOST;
 

-       LOG(1, ip, 0, 0, "Route %s %u.%u.%u.%u/%u.%u.%u.%u %u.%u.%u.%u\n",
-           add ? "add" : "del",
-           ip   >> 24, ip   >> 16 & 0xff, ip   >> 8 & 0xff, ip   & 0xff,
-           mask >> 24, mask >> 16 & 0xff, mask >> 8 & 0xff, mask & 0xff,
-           gw   >> 24, gw   >> 16 & 0xff, gw   >> 8 & 0xff, gw   & 0xff);
+       LOG(1, s, 0, "Route %s %s/%s%s%s\n", add ? "add" : "del",
+           fmtaddr(htonl(ip), 0), fmtaddr(htonl(mask), 1),
+           gw ? " via" : "", gw ? fmtaddr(htonl(gw), 2) : "");

 
        if (ioctl(ifrfd, add ? SIOCADDRT : SIOCDELRT, (void *) &r) < 0)
 
        if (ioctl(ifrfd, add ? SIOCADDRT : SIOCDELRT, (void *) &r) < 0)

-               LOG(0, 0, 0, 0, "routeset() error in ioctl: %s\n", strerror(errno));
+               LOG(0, 0, 0, "routeset() error in ioctl: %s\n", strerror(errno));

 
 #ifdef BGP
        if (add)
 
 #ifdef BGP
        if (add)


@@ -331,7 +336,7 @@ void routeset(sessionidt s, ipt ip, ipt mask, ipt gw, u8 add)
 #endif /* BGP */
 
                // Add/Remove the IPs to the 'sessionbyip' cache.
 #endif /* BGP */
 
                // Add/Remove the IPs to the 'sessionbyip' cache.

-               // Note that we add the zero address in the case of 
+               // Note that we add the zero address in the case of

                // a network route. Roll on CIDR.
 
                // Note that 's == 0' implies this is the address pool.
                // a network route. Roll on CIDR.
 
                // Note that 's == 0' implies this is the address pool.


@@ -350,7 +355,7 @@ void routeset(sessionidt s, ipt ip, ipt mask, ipt gw, u8 add)
 
 //
 // Set up TUN interface
 
 //
 // Set up TUN interface

-void inittun(void)
+static void inittun(void)

 {
        struct ifreq ifr;
        struct sockaddr_in sin = {0};
 {
        struct ifreq ifr;
        struct sockaddr_in sin = {0};


@@ -360,7 +365,7 @@ void inittun(void)
        tunfd = open(TUNDEVICE, O_RDWR);
        if (tunfd < 0)
        {                          // fatal
        tunfd = open(TUNDEVICE, O_RDWR);
        if (tunfd < 0)
        {                          // fatal

-               LOG(0, 0, 0, 0, "Can't open %s: %s\n", TUNDEVICE, strerror(errno));
+               LOG(0, 0, 0, "Can't open %s: %s\n", TUNDEVICE, strerror(errno));

                exit(1);
        }
        {
                exit(1);
        }
        {


@@ -369,7 +374,7 @@ void inittun(void)
        }
        if (ioctl(tunfd, TUNSETIFF, (void *) &ifr) < 0)
        {
        }
        if (ioctl(tunfd, TUNSETIFF, (void *) &ifr) < 0)
        {

-               LOG(0, 0, 0, 0, "Can't set tun interface: %s\n", strerror(errno));
+               LOG(0, 0, 0, "Can't set tun interface: %s\n", strerror(errno));

                exit(1);
        }
        assert(strlen(ifr.ifr_name) < sizeof(config->tundevice));
                exit(1);
        }
        assert(strlen(ifr.ifr_name) < sizeof(config->tundevice));


@@ -382,32 +387,26 @@ void inittun(void)
 
        if (ioctl(ifrfd, SIOCSIFADDR, (void *) &ifr) < 0)
        {
 
        if (ioctl(ifrfd, SIOCSIFADDR, (void *) &ifr) < 0)
        {

-               LOG(0, 0, 0, 0, "Error setting tun address: %s\n", strerror(errno));
+               LOG(0, 0, 0, "Error setting tun address: %s\n", strerror(errno));

                exit(1);
        }
        /* Bump up the qlen to deal with bursts from the network */
        ifr.ifr_qlen = 1000;
        if (ioctl(ifrfd, SIOCSIFTXQLEN, (void *) &ifr) < 0)
        {
                exit(1);
        }
        /* Bump up the qlen to deal with bursts from the network */
        ifr.ifr_qlen = 1000;
        if (ioctl(ifrfd, SIOCSIFTXQLEN, (void *) &ifr) < 0)
        {

-               LOG(0, 0, 0, 0, "Error setting tun queue length: %s\n", strerror(errno));
+               LOG(0, 0, 0, "Error setting tun queue length: %s\n", strerror(errno));

                exit(1);
        }
        ifr.ifr_flags = IFF_UP;
        if (ioctl(ifrfd, SIOCSIFFLAGS, (void *) &ifr) < 0)
        {
                exit(1);
        }
        ifr.ifr_flags = IFF_UP;
        if (ioctl(ifrfd, SIOCSIFFLAGS, (void *) &ifr) < 0)
        {

-               LOG(0, 0, 0, 0, "Error setting tun flags: %s\n", strerror(errno));
-               exit(1);
-       }
-       if (ioctl(ifrfd, SIOCGIFINDEX, (void *) &ifr) < 0)
-       {
-               LOG(0, 0, 0, 0, "Error setting tun ifindex: %s\n", strerror(errno));
+               LOG(0, 0, 0, "Error setting tun flags: %s\n", strerror(errno));

                exit(1);
        }
                exit(1);
        }

-       tunidx = ifr.ifr_ifindex;

 }
 
 // set up UDP port
 }
 
 // set up UDP port

-void initudp(void)
+static void initudp(void)

 {
        int on = 1;
        struct sockaddr_in addr;
 {
        int on = 1;
        struct sockaddr_in addr;


@@ -425,7 +424,7 @@ void initudp(void)
        }
        if (bind(udpfd, (void *) &addr, sizeof(addr)) < 0)
        {
        }
        if (bind(udpfd, (void *) &addr, sizeof(addr)) < 0)
        {

-               LOG(0, 0, 0, 0, "Error in UDP bind: %s\n", strerror(errno));
+               LOG(0, 0, 0, "Error in UDP bind: %s\n", strerror(errno));

                exit(1);
        }
        snoopfd = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
                exit(1);
        }
        snoopfd = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);


@@ -433,12 +432,12 @@ void initudp(void)
        // Control
        memset(&addr, 0, sizeof(addr));
        addr.sin_family = AF_INET;
        // Control
        memset(&addr, 0, sizeof(addr));
        addr.sin_family = AF_INET;

-       addr.sin_port = htons(1702);
-       controlfd = socket(AF_INET, SOCK_DGRAM, 17);
+       addr.sin_port = htons(NSCTL_PORT);
+       controlfd = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);

        setsockopt(controlfd, SOL_SOCKET, SO_REUSEADDR, &on, sizeof(on));
        if (bind(controlfd, (void *) &addr, sizeof(addr)) < 0)
        {
        setsockopt(controlfd, SOL_SOCKET, SO_REUSEADDR, &on, sizeof(on));
        if (bind(controlfd, (void *) &addr, sizeof(addr)) < 0)
        {

-               LOG(0, 0, 0, 0, "Error in control bind: %s\n", strerror(errno));
+               LOG(0, 0, 0, "Error in control bind: %s\n", strerror(errno));

                exit(1);
        }
 }
                exit(1);
        }
 }


@@ -458,7 +457,7 @@ void initudp(void)
 // IP address.
 //
 
 // IP address.
 //
 

-int lookup_ipmap(ipt ip)
+static int lookup_ipmap(ipt ip)

 {
        u8 *a = (u8 *)&ip;
        char **d = (char **) ip_hash;
 {
        u8 *a = (u8 *)&ip;
        char **d = (char **) ip_hash;


@@ -509,9 +508,10 @@ static void cache_ipmap(ipt ip, int s)
        d[(size_t) a[3]] = (char *)((int)s);
 
        if (s > 0)
        d[(size_t) a[3]] = (char *)((int)s);
 
        if (s > 0)

-               LOG(4, ip, s, session[s].tunnel, "Caching ip address %s\n", inet_toa(nip));
+               LOG(4, s, session[s].tunnel, "Caching ip address %s\n", fmtaddr(nip, 0));
+

        else if (s == 0)
        else if (s == 0)

-               LOG(4, ip, 0, 0, "Un-caching ip address %s\n", inet_toa(nip));
+               LOG(4, 0, 0, "Un-caching ip address %s\n", fmtaddr(nip, 0));

        // else a map to an ip pool index.
 }
 
        // else a map to an ip pool index.
 }
 


@@ -596,21 +596,21 @@ void send_garp(ipt ip)
        s = socket(PF_INET, SOCK_DGRAM, 0);
        if (s < 0)
        {
        s = socket(PF_INET, SOCK_DGRAM, 0);
        if (s < 0)
        {

-               LOG(0, 0, 0, 0, "Error creating socket for GARP: %s\n", strerror(errno));
+               LOG(0, 0, 0, "Error creating socket for GARP: %s\n", strerror(errno));

                return;
        }
        memset(&ifr, 0, sizeof(ifr));
        strncpy(ifr.ifr_name, "eth0", sizeof(ifr.ifr_name) - 1);
        if (ioctl(s, SIOCGIFHWADDR, &ifr) < 0)
        {
                return;
        }
        memset(&ifr, 0, sizeof(ifr));
        strncpy(ifr.ifr_name, "eth0", sizeof(ifr.ifr_name) - 1);
        if (ioctl(s, SIOCGIFHWADDR, &ifr) < 0)
        {

-               LOG(0, 0, 0, 0, "Error getting eth0 hardware address for GARP: %s\n", strerror(errno));
+               LOG(0, 0, 0, "Error getting eth0 hardware address for GARP: %s\n", strerror(errno));

                close(s);
                return;
        }
        memcpy(mac, &ifr.ifr_hwaddr.sa_data, 6*sizeof(char));
        if (ioctl(s, SIOCGIFINDEX, &ifr) < 0)
        {
                close(s);
                return;
        }
        memcpy(mac, &ifr.ifr_hwaddr.sa_data, 6*sizeof(char));
        if (ioctl(s, SIOCGIFINDEX, &ifr) < 0)
        {

-               LOG(0, 0, 0, 0, "Error getting eth0 interface index for GARP: %s\n", strerror(errno));
+               LOG(0, 0, 0, "Error getting eth0 interface index for GARP: %s\n", strerror(errno));

                close(s);
                return;
        }
                close(s);
                return;
        }


@@ -619,13 +619,13 @@ void send_garp(ipt ip)
 }
 
 // Find session by username, 0 for not found
 }
 
 // Find session by username, 0 for not found

-sessiont *sessiontbysessionidt(sessionidt s)
+static sessiont *sessiontbysessionidt(sessionidt s)

 {
        if (!s || s > MAXSESSION) return NULL;
        return &session[s];
 }
 
 {
        if (!s || s > MAXSESSION) return NULL;
        return &session[s];
 }
 

-sessionidt sessionidtbysessiont(sessiont *s)
+static sessionidt sessionidtbysessiont(sessiont *s)

 {
        sessionidt val = s-session;
        if (s < session || val > MAXSESSION) return 0;
 {
        sessionidt val = s-session;
        if (s < session || val > MAXSESSION) return 0;


@@ -642,7 +642,7 @@ void tunnelsend(u8 * buf, u16 l, tunnelidt t)
        if (!t)
        {
                static int backtrace_count = 0;
        if (!t)
        {
                static int backtrace_count = 0;

-               LOG(0, 0, 0, t, "tunnelsend called with 0 as tunnel id\n");
+               LOG(0, 0, t, "tunnelsend called with 0 as tunnel id\n");

                STAT(tunnel_tx_errors);
                log_backtrace(backtrace_count, 5)
                return;
                STAT(tunnel_tx_errors);
                log_backtrace(backtrace_count, 5)
                return;


@@ -651,11 +651,12 @@ void tunnelsend(u8 * buf, u16 l, tunnelidt t)
        if (!tunnel[t].ip)
        {
                static int backtrace_count = 0;
        if (!tunnel[t].ip)
        {
                static int backtrace_count = 0;

-               LOG(1, 0, 0, t, "Error sending data out tunnel: no remote endpoint (tunnel not set up)\n");
+               LOG(1, 0, t, "Error sending data out tunnel: no remote endpoint (tunnel not set up)\n");

                log_backtrace(backtrace_count, 5)
                STAT(tunnel_tx_errors);
                return;
        }
                log_backtrace(backtrace_count, 5)
                STAT(tunnel_tx_errors);
                return;
        }

+

        memset(&addr, 0, sizeof(addr));
        addr.sin_family = AF_INET;
        *(u32 *) & addr.sin_addr = htonl(tunnel[t].ip);
        memset(&addr, 0, sizeof(addr));
        addr.sin_family = AF_INET;
        *(u32 *) & addr.sin_addr = htonl(tunnel[t].ip);


@@ -672,13 +673,13 @@ void tunnelsend(u8 * buf, u16 l, tunnelidt t)
                if (tunnel[t].try > 1)
                {
                        STAT(tunnel_retries);
                if (tunnel[t].try > 1)
                {
                        STAT(tunnel_retries);

-                       LOG(3, tunnel[t].ip, 0, t, "Control message resend try %d\n", tunnel[t].try);
+                       LOG(3, 0, t, "Control message resend try %d\n", tunnel[t].try);

                }
        }
 
        if (sendto(udpfd, buf, l, 0, (void *) &addr, sizeof(addr)) < 0)
        {
                }
        }
 
        if (sendto(udpfd, buf, l, 0, (void *) &addr, sizeof(addr)) < 0)
        {

-               LOG(0, tunnel[t].ip, ntohs((*(u16 *) (buf + 6))), t, "Error sending data out tunnel: %s (udpfd=%d, buf=%p, len=%d, dest=%s)\n",
+               LOG(0, ntohs((*(u16 *) (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));
                STAT(tunnel_tx_errors);
                return;
                                strerror(errno), udpfd, buf, l, inet_ntoa(addr.sin_addr));
                STAT(tunnel_tx_errors);
                return;


@@ -700,7 +701,7 @@ int tun_write(u8 * data, int size)
 
 // process outgoing (to tunnel) IP
 //
 
 // process outgoing (to tunnel) IP
 //

-void processipout(u8 * buf, int len)
+static void processipout(u8 * buf, int len)

 {
        sessionidt s;
        sessiont *sp;
 {
        sessionidt s;
        sessiont *sp;


@@ -716,13 +717,13 @@ void processipout(u8 * buf, int len)
 
        if (len < MIN_IP_SIZE)
        {
 
        if (len < MIN_IP_SIZE)
        {

-               LOG(1, 0, 0, 0, "Short IP, %d bytes\n", len);
+               LOG(1, 0, 0, "Short IP, %d bytes\n", len);

                STAT(tunnel_tx_errors);
                return;
        }
        if (len >= MAXETHER)
        {
                STAT(tunnel_tx_errors);
                return;
        }
        if (len >= MAXETHER)
        {

-               LOG(1, 0, 0, 0, "Oversize IP packet %d bytes\n", len);
+               LOG(1, 0, 0, "Oversize IP packet %d bytes\n", len);

                STAT(tunnel_tx_errors);
                return;
        }
                STAT(tunnel_tx_errors);
                return;
        }


@@ -734,7 +735,7 @@ void processipout(u8 * buf, int len)
        // Got an IP header now
        if (*(u8 *)(buf) >> 4 != 4)
        {
        // Got an IP header now
        if (*(u8 *)(buf) >> 4 != 4)
        {

-               LOG(1, 0, 0, 0, "IP: Don't understand anything except IPv4\n");
+               LOG(1, 0, 0, "IP: Don't understand anything except IPv4\n");

                return;
        }
 
                return;
        }
 


@@ -753,7 +754,7 @@ void processipout(u8 * buf, int len)
 
                if (rate++ < config->icmp_rate) // Only send a max of icmp_rate per second.
                {
 
                if (rate++ < config->icmp_rate) // Only send a max of icmp_rate per second.
                {

-                       LOG(4, 0, 0, 0, "IP: Sending ICMP host unreachable to %s\n", inet_toa(*(u32 *)(buf + 12)));
+                       LOG(4, 0, 0, "IP: Sending ICMP host unreachable to %s\n", fmtaddr(*(u32 *)(buf + 12), 0));

                        host_unreachable(*(u32 *)(buf + 12), *(u16 *)(buf + 4), ip, buf, (len < 64) ? 64 : len);
                }
                return;
                        host_unreachable(*(u32 *)(buf + 12), *(u16 *)(buf + 4), ip, buf, (len < 64) ? 64 : len);
                }
                return;


@@ -761,6 +762,10 @@ void processipout(u8 * buf, int len)
        t = session[s].tunnel;
        sp = &session[s];
 
        t = session[s].tunnel;
        sp = &session[s];
 

+       // run access-list if any
+       if (session[s].filter_out && !ip_filter(buf, len, session[s].filter_out - 1))
+               return;
+

        if (sp->tbf_out)
        {
                // Are we throttling this session?
        if (sp->tbf_out)
        {
                // Are we throttling this session?


@@ -777,16 +782,12 @@ void processipout(u8 * buf, int len)
                return;
        }
 
                return;
        }
 

-       LOG(5, session[s].ip, s, t, "Ethernet -> Tunnel (%d bytes)\n", len);
+       LOG(5, s, t, "Ethernet -> Tunnel (%d bytes)\n", len);

 
        // Add on L2TP header
        {
                u8 *p = makeppp(b, sizeof(b), buf, len, t, s, PPPIP);
 
        // Add on L2TP header
        {
                u8 *p = makeppp(b, sizeof(b), buf, len, t, s, PPPIP);

-               if (!p)
-               {
-                       LOG(3, session[s].ip, s, t, "failed to send packet in processipout.\n");
-                       return;
-               }
+               if (!p) return;

                tunnelsend(b, len + (p-b), t); // send it...
        }
 
                tunnelsend(b, len + (p-b), t); // send it...
        }
 


@@ -805,7 +806,7 @@ void processipout(u8 * buf, int len)
 // Helper routine for the TBF filters.
 // Used to send queued data in to the user!
 //
 // Helper routine for the TBF filters.
 // Used to send queued data in to the user!
 //

-void send_ipout(sessionidt s, u8 *buf, int len)
+static void send_ipout(sessionidt s, u8 *buf, int len)

 {
        sessiont *sp;
        tunnelidt t;
 {
        sessiont *sp;
        tunnelidt t;


@@ -815,7 +816,7 @@ void send_ipout(sessionidt s, u8 *buf, int len)
 
        if (len < 0 || len > MAXETHER)
        {
 
        if (len < 0 || len > MAXETHER)
        {

-               LOG(1,0,0,0, "Odd size IP packet: %d bytes\n", len);
+               LOG(1, 0, 0, "Odd size IP packet: %d bytes\n", len);

                return;
        }
 
                return;
        }
 


@@ -831,16 +832,12 @@ void send_ipout(sessionidt s, u8 *buf, int len)
        t = session[s].tunnel;
        sp = &session[s];
 
        t = session[s].tunnel;
        sp = &session[s];
 

-       LOG(5, session[s].ip, s, t, "Ethernet -> Tunnel (%d bytes)\n", len);
+       LOG(5, s, t, "Ethernet -> Tunnel (%d bytes)\n", len);

 
        // Add on L2TP header
        {
                u8 *p = makeppp(b, sizeof(b),  buf, len, t, s, PPPIP);
 
        // Add on L2TP header
        {
                u8 *p = makeppp(b, sizeof(b),  buf, len, t, s, PPPIP);

-               if (!p)
-               {
-                       LOG(3, session[s].ip, s, t, "failed to send packet in send_ipout.\n");
-                       return;
-               }
+               if (!p) return;

                tunnelsend(b, len + (p-b), t); // send it...
        }
 
                tunnelsend(b, len + (p-b), t); // send it...
        }
 


@@ -856,7 +853,7 @@ void send_ipout(sessionidt s, u8 *buf, int len)
 }
 
 // add an AVP (16 bit)
 }
 
 // add an AVP (16 bit)

-void control16(controlt * c, u16 avp, u16 val, u8 m)
+static void control16(controlt * c, u16 avp, u16 val, u8 m)

 {
        u16 l = (m ? 0x8008 : 0x0008);
        *(u16 *) (c->buf + c->length + 0) = htons(l);
 {
        u16 l = (m ? 0x8008 : 0x0008);
        *(u16 *) (c->buf + c->length + 0) = htons(l);


@@ -867,7 +864,7 @@ void control16(controlt * c, u16 avp, u16 val, u8 m)
 }
 
 // add an AVP (32 bit)
 }
 
 // add an AVP (32 bit)

-void control32(controlt * c, u16 avp, u32 val, u8 m)
+static void control32(controlt * c, u16 avp, u32 val, u8 m)

 {
        u16 l = (m ? 0x800A : 0x000A);
        *(u16 *) (c->buf + c->length + 0) = htons(l);
 {
        u16 l = (m ? 0x800A : 0x000A);
        *(u16 *) (c->buf + c->length + 0) = htons(l);


@@ -878,7 +875,7 @@ void control32(controlt * c, u16 avp, u32 val, u8 m)
 }
 
 // add an AVP (32 bit)
 }
 
 // add an AVP (32 bit)

-void controls(controlt * c, u16 avp, char *val, u8 m)
+static void controls(controlt * c, u16 avp, char *val, u8 m)

 {
        u16 l = ((m ? 0x8000 : 0) + strlen(val) + 6);
        *(u16 *) (c->buf + c->length + 0) = htons(l);
 {
        u16 l = ((m ? 0x8000 : 0) + strlen(val) + 6);
        *(u16 *) (c->buf + c->length + 0) = htons(l);


@@ -889,7 +886,7 @@ void controls(controlt * c, u16 avp, char *val, u8 m)
 }
 
 // add a binary AVP
 }
 
 // add a binary AVP

-void controlb(controlt * c, u16 avp, char *val, unsigned int len, u8 m)
+static void controlb(controlt * c, u16 avp, char *val, unsigned int len, u8 m)

 {
        u16 l = ((m ? 0x8000 : 0) + len + 6);
        *(u16 *) (c->buf + c->length + 0) = htons(l);
 {
        u16 l = ((m ? 0x8000 : 0) + len + 6);
        *(u16 *) (c->buf + c->length + 0) = htons(l);


@@ -900,7 +897,7 @@ void controlb(controlt * c, u16 avp, char *val, unsigned int len, u8 m)
 }
 
 // new control connection
 }
 
 // new control connection

-controlt *controlnew(u16 mtype)
+static controlt *controlnew(u16 mtype)

 {
        controlt *c;
        if (!controlfree)
 {
        controlt *c;
        if (!controlfree)


@@ -920,7 +917,7 @@ controlt *controlnew(u16 mtype)
 
 // send zero block if nothing is waiting
 // (ZLB send).
 
 // send zero block if nothing is waiting
 // (ZLB send).

-void controlnull(tunnelidt t)
+static void controlnull(tunnelidt t)

 {
        u8 buf[12];
        if (tunnel[t].controlc) // Messages queued; They will carry the ack.
 {
        u8 buf[12];
        if (tunnel[t].controlc) // Messages queued; They will carry the ack.


@@ -936,7 +933,7 @@ void controlnull(tunnelidt t)
 }
 
 // add a control message to a tunnel, and send if within window
 }
 
 // add a control message to a tunnel, and send if within window

-void controladd(controlt * c, tunnelidt t, sessionidt s)
+static void controladd(controlt * c, tunnelidt t, sessionidt s)

 {
        *(u16 *) (c->buf + 2) = htons(c->length); // length
        *(u16 *) (c->buf + 4) = htons(tunnel[t].far); // tunnel
 {
        *(u16 *) (c->buf + 2) = htons(c->length); // length
        *(u16 *) (c->buf + 4) = htons(tunnel[t].far); // tunnel


@@ -948,8 +945,10 @@ void controladd(controlt * c, tunnelidt t, sessionidt s)
                tunnel[t].controle->next = c;
        else
                tunnel[t].controls = c;
                tunnel[t].controle->next = c;
        else
                tunnel[t].controls = c;

+

        tunnel[t].controle = c;
        tunnel[t].controlc++;
        tunnel[t].controle = c;
        tunnel[t].controlc++;

+

        // send now if space in window
        if (tunnel[t].controlc <= tunnel[t].window)
        {
        // send now if space in window
        if (tunnel[t].controlc <= tunnel[t].window)
        {


@@ -1005,10 +1004,47 @@ void throttle_session(sessionidt s, int rate_in, int rate_out)
        }
 }
 
        }
 }
 

+// add/remove filters from session (-1 = no change)
+void filter_session(sessionidt s, int filter_in, int filter_out)
+{
+       if (!session[s].tunnel)
+               return; // No-one home.
+
+       if (!*session[s].user)
+               return; // User not logged in
+
+       // paranoia
+       if (filter_in > MAXFILTER) filter_in = -1;
+       if (filter_out > MAXFILTER) filter_out = -1;
+       if (session[s].filter_in > MAXFILTER) session[s].filter_in = 0;
+       if (session[s].filter_out > MAXFILTER) session[s].filter_out = 0;
+
+       if (filter_in >= 0)
+       {
+               if (session[s].filter_in)
+                       ip_filters[session[s].filter_in - 1].used--;
+
+               if (filter_in > 0)
+                       ip_filters[filter_in - 1].used++;
+
+               session[s].filter_in = filter_in;
+       }
+
+       if (filter_out >= 0)
+       {
+               if (session[s].filter_out)
+                       ip_filters[session[s].filter_out - 1].used--;
+
+               if (filter_out > 0)
+                       ip_filters[filter_out - 1].used++;
+
+               session[s].filter_out = filter_out;
+       }
+}
+

 // start tidy shutdown of session
 void sessionshutdown(sessionidt s, char *reason)
 {
 // start tidy shutdown of session
 void sessionshutdown(sessionidt s, char *reason)
 {

-       int dead = session[s].die;

        int walled_garden = session[s].walled_garden;
 
 
        int walled_garden = session[s].walled_garden;
 
 


@@ -1016,29 +1052,26 @@ void sessionshutdown(sessionidt s, char *reason)
 
        if (!session[s].tunnel)
        {
 
        if (!session[s].tunnel)
        {

-               LOG(3, session[s].ip, s, session[s].tunnel, "Called sessionshutdown on a session with no tunnel.\n");
+               LOG(3, s, session[s].tunnel, "Called sessionshutdown on a session with no tunnel.\n");

                return;                   // not a live session
        }
 
                return;                   // not a live session
        }
 

-       if (!dead)
-               LOG(2, 0, s, session[s].tunnel, "Shutting down session %d: %s\n", s, reason);
-
-       session[s].die = now() + 150; // Clean up in 15 seconds
-
+       if (!session[s].die)

        {
                struct param_kill_session data = { &tunnel[session[s].tunnel], &session[s] };
        {
                struct param_kill_session data = { &tunnel[session[s].tunnel], &session[s] };

+               LOG(2, s, session[s].tunnel, "Shutting down session %d: %s\n", s, reason);

                run_plugins(PLUGIN_KILL_SESSION, &data);
        }
 
        // RADIUS Stop message
                run_plugins(PLUGIN_KILL_SESSION, &data);
        }
 
        // RADIUS Stop message

-       if (session[s].opened && !walled_garden && !dead)
+       if (session[s].opened && !walled_garden && !session[s].die)

        {
                u16 r = session[s].radius;
                if (!r)
                {
                        if (!(r = radiusnew(s)))
                        {
        {
                u16 r = session[s].radius;
                if (!r)
                {
                        if (!(r = radiusnew(s)))
                        {

-                               LOG(1, 0, s, session[s].tunnel, "No free RADIUS sessions for Stop message\n");
+                               LOG(1, s, session[s].tunnel, "No free RADIUS sessions for Stop message\n");

                                STAT(radius_overflow);
                        }
                        else
                                STAT(radius_overflow);
                        }
                        else


@@ -1055,15 +1088,20 @@ void sessionshutdown(sessionidt s, char *reason)
        if (session[s].ip)
        {                          // IP allocated, clear and unroute
                int r;
        if (session[s].ip)
        {                          // IP allocated, clear and unroute
                int r;

+               int routed = 0;

                for (r = 0; r < MAXROUTE && session[s].route[r].ip; r++)
                {
                for (r = 0; r < MAXROUTE && session[s].route[r].ip; r++)
                {

-                       routeset(s, session[s].route[r].ip, session[s].route[r].mask, session[s].ip, 0);
+                       if ((session[s].ip & session[s].route[r].mask) ==
+                           (session[s].route[r].ip & session[s].route[r].mask))
+                               routed++;
+
+                       routeset(s, session[s].route[r].ip, session[s].route[r].mask, 0, 0);

                        session[s].route[r].ip = 0;
                }
 
                if (session[s].ip_pool_index == -1) // static ip
                {
                        session[s].route[r].ip = 0;
                }
 
                if (session[s].ip_pool_index == -1) // static ip
                {

-                       routeset(s, session[s].ip, 0, 0, 0);    // Delete route.
+                       if (!routed) routeset(s, session[s].ip, 0, 0, 0);

                        session[s].ip = 0;
                }
                else
                        session[s].ip = 0;
                }
                else


@@ -1080,6 +1118,13 @@ void sessionshutdown(sessionidt s, char *reason)
                controladd(c, session[s].tunnel, s); // send the message
        }
 
                controladd(c, session[s].tunnel, s); // send the message
        }
 

+       if (!session[s].die)
+               session[s].die = now() + 150; // Clean up in 15 seconds
+
+       // update filter refcounts
+       if (session[s].filter_in) ip_filters[session[s].filter_in - 1].used--;
+       if (session[s].filter_out) ip_filters[session[s].filter_out - 1].used--;
+

        cluster_send_session(s);
 }
 
        cluster_send_session(s);
 }
 


@@ -1109,11 +1154,7 @@ void sendipcp(tunnelidt t, sessionidt s)
        }
 
        q = makeppp(buf,sizeof(buf), 0, 0, t, s, PPPIPCP);
        }
 
        q = makeppp(buf,sizeof(buf), 0, 0, t, s, PPPIPCP);

-       if (!q)
-       {
-               LOG(3, session[s].ip, s, t, "failed to send packet in sendipcp.\n");
-               return;
-       }
+       if (!q) return;

 
        *q = ConfigReq;
        q[1] = r << RADIUS_SHIFT;                    // ID, dont care, we only send one type of request
 
        *q = ConfigReq;
        q[1] = r << RADIUS_SHIFT;                    // ID, dont care, we only send one type of request


@@ -1129,7 +1170,7 @@ void sendipcp(tunnelidt t, sessionidt s)
 }
 
 // kill a session now
 }
 
 // kill a session now

-void sessionkill(sessionidt s, char *reason)
+static void sessionkill(sessionidt s, char *reason)

 {
 
        CSTAT(call_sessionkill);
 {
 
        CSTAT(call_sessionkill);


@@ -1139,7 +1180,7 @@ void sessionkill(sessionidt s, char *reason)
        if (session[s].radius)
                radiusclear(session[s].radius, s); // cant send clean accounting data, session is killed
 
        if (session[s].radius)
                radiusclear(session[s].radius, s); // cant send clean accounting data, session is killed
 

-       LOG(2, 0, s, session[s].tunnel, "Kill session %d (%s): %s\n", s, session[s].user, reason);
+       LOG(2, s, session[s].tunnel, "Kill session %d (%s): %s\n", s, session[s].user, reason);

 
        memset(&session[s], 0, sizeof(session[s]));
        session[s].tunnel = T_FREE;     // Mark it as free.
 
        memset(&session[s], 0, sizeof(session[s]));
        session[s].tunnel = T_FREE;     // Mark it as free.


@@ -1149,8 +1190,15 @@ void sessionkill(sessionidt s, char *reason)
        cluster_send_session(s);
 }
 
        cluster_send_session(s);
 }
 

+static void tunnelclear(tunnelidt t)
+{
+       if (!t) return;
+       memset(&tunnel[t], 0, sizeof(tunnel[t]));
+       tunnel[t].state = TUNNELFREE;
+}
+

 // kill a tunnel now
 // kill a tunnel now

-void tunnelkill(tunnelidt t, char *reason)
+static void tunnelkill(tunnelidt t, char *reason)

 {
        sessionidt s;
        controlt *c;
 {
        sessionidt s;
        controlt *c;


@@ -1175,13 +1223,13 @@ void tunnelkill(tunnelidt t, char *reason)
 
        // free tunnel
        tunnelclear(t);
 
        // free tunnel
        tunnelclear(t);

-       LOG(1, 0, 0, t, "Kill tunnel %d: %s\n", t, reason);
+       LOG(1, 0, t, "Kill tunnel %d: %s\n", t, reason);

        cli_tunnel_actions[s].action = 0;
        cluster_send_tunnel(t);
 }
 
 // shut down a tunnel cleanly
        cli_tunnel_actions[s].action = 0;
        cluster_send_tunnel(t);
 }
 
 // shut down a tunnel cleanly

-void tunnelshutdown(tunnelidt t, char *reason)
+static void tunnelshutdown(tunnelidt t, char *reason)

 {
        sessionidt s;
 
 {
        sessionidt s;
 


@@ -1193,12 +1241,12 @@ void tunnelshutdown(tunnelidt t, char *reason)
                tunnelkill(t, reason);
                return;
        }
                tunnelkill(t, reason);
                return;
        }

-       LOG(1, 0, 0, t, "Shutting down tunnel %d (%s)\n", t, reason);
+       LOG(1, 0, t, "Shutting down tunnel %d (%s)\n", t, reason);

 
        // close session
        for (s = 1; s < MAXSESSION; s++)
                if (session[s].tunnel == t)
 
        // close session
        for (s = 1; s < MAXSESSION; s++)
                if (session[s].tunnel == t)

-                       sessionkill(s, reason);
+                       sessionshutdown(s, reason);

 
        tunnel[t].state = TUNNELDIE;
        tunnel[t].die = now() + 700; // Clean up in 70 seconds
 
        tunnel[t].state = TUNNELDIE;
        tunnel[t].die = now() + 700; // Clean up in 70 seconds


@@ -1229,13 +1277,13 @@ void processudp(u8 * buf, int len, struct sockaddr_in *addr)
        INC_STAT(tunnel_rx_bytes, len);
        if (len < 6)
        {
        INC_STAT(tunnel_rx_bytes, len);
        if (len < 6)
        {

-               LOG(1, ntohl(addr->sin_addr.s_addr), 0, 0, "Short UDP, %d bytes\n", len);
+               LOG(1, 0, 0, "Short UDP, %d bytes\n", len);

                STAT(tunnel_rx_errors);
                return;
        }
        if ((buf[1] & 0x0F) != 2)
        {
                STAT(tunnel_rx_errors);
                return;
        }
        if ((buf[1] & 0x0F) != 2)
        {

-               LOG(1, ntohl(addr->sin_addr.s_addr), 0, 0, "Bad L2TP ver %d\n", (buf[1] & 0x0F) != 2);
+               LOG(1, 0, 0, "Bad L2TP ver %d\n", (buf[1] & 0x0F) != 2);

                STAT(tunnel_rx_errors);
                return;
        }
                STAT(tunnel_rx_errors);
                return;
        }


@@ -1250,13 +1298,13 @@ void processudp(u8 * buf, int len, struct sockaddr_in *addr)
        p += 2;
        if (s >= MAXSESSION)
        {
        p += 2;
        if (s >= MAXSESSION)
        {

-               LOG(1, ntohl(addr->sin_addr.s_addr), s, t, "Received UDP packet with invalid session ID\n");
+               LOG(1, s, t, "Received UDP packet with invalid session ID\n");

                STAT(tunnel_rx_errors);
                return;
        }
        if (t >= MAXTUNNEL)
        {
                STAT(tunnel_rx_errors);
                return;
        }
        if (t >= MAXTUNNEL)
        {

-               LOG(1, ntohl(addr->sin_addr.s_addr), s, t, "Received UDP packet with invalid tunnel ID\n");
+               LOG(1, s, t, "Received UDP packet with invalid tunnel ID\n");

                STAT(tunnel_rx_errors);
                return;
        }
                STAT(tunnel_rx_errors);
                return;
        }


@@ -1274,7 +1322,7 @@ void processudp(u8 * buf, int len, struct sockaddr_in *addr)
        }
        if ((p - buf) > l)
        {
        }
        if ((p - buf) > l)
        {

-               LOG(1, ntohl(addr->sin_addr.s_addr), s, t, "Bad length %d>%d\n", (p - buf), l);
+               LOG(1, s, t, "Bad length %d>%d\n", (p - buf), l);

                STAT(tunnel_rx_errors);
                return;
        }
                STAT(tunnel_rx_errors);
                return;
        }


@@ -1301,14 +1349,13 @@ void processudp(u8 * buf, int len, struct sockaddr_in *addr)
 
                if ((*buf & 0xCA) != 0xC8)
                {
 
                if ((*buf & 0xCA) != 0xC8)
                {

-                       LOG(1, ntohl(addr->sin_addr.s_addr), s, t, "Bad control header %02X\n", *buf);
+                       LOG(1, s, t, "Bad control header %02X\n", *buf);

                        STAT(tunnel_rx_errors);
                        return;
                }
                        STAT(tunnel_rx_errors);
                        return;
                }

-               LOG(3, ntohl(addr->sin_addr.s_addr), s, t, "Control message (%d bytes): (unacked %d) l-ns %d l-nr %d r-ns %d r-nr %d\n",
-                               l, tunnel[t].controlc, tunnel[t].ns, tunnel[t].nr, ns, nr);
-               // if no tunnel specified, assign one
-               if (!t)
+
+               // check for duplicate tunnel open message
+               if (!t && ns == 0)

                {
                        int i;
 
                {
                        int i;
 


@@ -1322,15 +1369,20 @@ void processudp(u8 * buf, int len, struct sockaddr_in *addr)
                                        tunnel[i].port != ntohs(addr->sin_port) )
                                        continue;
                                t = i;
                                        tunnel[i].port != ntohs(addr->sin_port) )
                                        continue;
                                t = i;

+                               LOG(3, s, t, "Duplicate SCCRQ?\n");

                                break;
                        }
                }
 
                                break;
                        }
                }
 

+               LOG(3, s, t, "Control message (%d bytes): (unacked %d) l-ns %d l-nr %d r-ns %d r-nr %d\n",
+                       l, tunnel[t].controlc, tunnel[t].ns, tunnel[t].nr, ns, nr);
+
+               // if no tunnel specified, assign one

                if (!t)
                {
                        if (!(t = new_tunnel()))
                        {
                if (!t)
                {
                        if (!(t = new_tunnel()))
                        {

-                               LOG(1, ntohl(addr->sin_addr.s_addr), 0, 0, "No more tunnels\n");
+                               LOG(1, 0, 0, "No more tunnels\n");

                                STAT(tunnel_overflow);
                                return;
                        }
                                STAT(tunnel_overflow);
                                return;
                        }


@@ -1338,8 +1390,27 @@ void processudp(u8 * buf, int len, struct sockaddr_in *addr)
                        tunnel[t].ip = ntohl(*(ipt *) & addr->sin_addr);
                        tunnel[t].port = ntohs(addr->sin_port);
                        tunnel[t].window = 4; // default window
                        tunnel[t].ip = ntohl(*(ipt *) & addr->sin_addr);
                        tunnel[t].port = ntohs(addr->sin_port);
                        tunnel[t].window = 4; // default window

-                       LOG(1, ntohl(addr->sin_addr.s_addr), 0, t, "   New tunnel from %u.%u.%u.%u/%u ID %d\n", tunnel[t].ip >> 24, tunnel[t].ip >> 16 & 255, tunnel[t].ip >> 8 & 255, tunnel[t].ip & 255, tunnel[t].port, t);

                        STAT(tunnel_created);
                        STAT(tunnel_created);

+                       LOG(1, 0, t, "   New tunnel from %s:%u ID %d\n",
+                               fmtaddr(htonl(tunnel[t].ip), 0), tunnel[t].port, t);
+               }
+
+                       // If the 'ns' just received is not the 'nr' we're
+                       // expecting, just send an ack and drop it.
+                       //
+                       // if 'ns' is less, then we got a retransmitted packet.
+                       // if 'ns' is greater than missed a packet. Either way
+                       // we should ignore it.
+               if (ns != tunnel[t].nr)
+               {
+                       // is this the sequence we were expecting?
+                       STAT(tunnel_rx_errors);
+                       LOG(1, 0, t, "   Out of sequence tunnel %d, (%d is not the expected %d)\n",
+                               t, ns, tunnel[t].nr);
+
+                       if (l)  // Is this not a ZLB?
+                               controlnull(t);
+                       return;

                }
 
                // This is used to time out old tunnels
                }
 
                // This is used to time out old tunnels


@@ -1349,7 +1420,7 @@ void processudp(u8 * buf, int len, struct sockaddr_in *addr)
                {
                        int skip = tunnel[t].window; // track how many in-window packets are still in queue
                                // some to clear maybe?
                {
                        int skip = tunnel[t].window; // track how many in-window packets are still in queue
                                // some to clear maybe?

-                       while (tunnel[t].controlc && (((tunnel[t].ns - tunnel[t].controlc) - nr) & 0x8000))
+                       while (tunnel[t].controlc > 0 && (((tunnel[t].ns - tunnel[t].controlc) - nr) & 0x8000))

                        {
                                controlt *c = tunnel[t].controls;
                                tunnel[t].controls = c->next;
                        {
                                controlt *c = tunnel[t].controls;
                                tunnel[t].controls = c->next;


@@ -1360,22 +1431,6 @@ void processudp(u8 * buf, int len, struct sockaddr_in *addr)
                                tunnel[t].try = 0; // we have progress
                        }
 
                                tunnel[t].try = 0; // we have progress
                        }
 

-                               // If the 'ns' just received is not the 'nr' we're
-                               // expecting, just send an ack and drop it.
-                               //
-                               // if 'ns' is less, then we got a retransmitted packet.
-                               // if 'ns' is greater than missed a packet. Either way
-                               // we should ignore it.
-                       if (ns != tunnel[t].nr)
-                       {
-                               // is this the sequence we were expecting?
-                               LOG(1, ntohl(addr->sin_addr.s_addr), 0, t, "   Out of sequence tunnel %d, (%d is not the expected %d)\n", t, ns, tunnel[t].nr);
-                               STAT(tunnel_rx_errors);
-
-                               if (l)  // Is this not a ZLB?
-                                       controlnull(t);
-                               return;
-                       }

                        // receiver advance (do here so quoted correctly in any sends below)
                        if (l) tunnel[t].nr = (ns + 1);
                        if (skip < 0) skip = 0;
                        // receiver advance (do here so quoted correctly in any sends below)
                        if (l) tunnel[t].nr = (ns + 1);
                        if (skip < 0) skip = 0;


@@ -1412,7 +1467,7 @@ void processudp(u8 * buf, int len, struct sockaddr_in *addr)
                                p += n;       // next
                                if (l < n)
                                {
                                p += n;       // next
                                if (l < n)
                                {

-                                       LOG(1, ntohl(addr->sin_addr.s_addr), s, t, "Invalid length in AVP\n");
+                                       LOG(1, s, t, "Invalid length in AVP\n");

                                        STAT(tunnel_rx_errors);
                                        fatal = flags;
                                        return;
                                        STAT(tunnel_rx_errors);
                                        fatal = flags;
                                        return;


@@ -1423,17 +1478,17 @@ void processudp(u8 * buf, int len, struct sockaddr_in *addr)
                                        // handle hidden AVPs
                                        if (!*config->l2tpsecret)
                                        {
                                        // handle hidden AVPs
                                        if (!*config->l2tpsecret)
                                        {

-                                               LOG(1, ntohl(addr->sin_addr.s_addr), s, t, "Hidden AVP requested, but no L2TP secret.\n");
+                                               LOG(1, s, t, "Hidden AVP requested, but no L2TP secret.\n");

                                                fatal = flags;
                                                continue;
                                        }
                                        if (!session[s].random_vector_length)
                                        {
                                                fatal = flags;
                                                continue;
                                        }
                                        if (!session[s].random_vector_length)
                                        {

-                                               LOG(1, ntohl(addr->sin_addr.s_addr), s, t, "Hidden AVP requested, but no random vector.\n");
+                                               LOG(1, s, t, "Hidden AVP requested, but no random vector.\n");

                                                fatal = flags;
                                                continue;
                                        }
                                                fatal = flags;
                                                continue;
                                        }

-                                       LOG(4, ntohl(addr->sin_addr.s_addr), s, t, "Hidden AVP\n");
+                                       LOG(4, s, t, "Hidden AVP\n");

                                        // Unhide the AVP
                                        n = unhide_avp(b, t, s, n);
                                        if (n == 0)
                                        // Unhide the AVP
                                        n = unhide_avp(b, t, s, n);
                                        if (n == 0)


@@ -1444,14 +1499,14 @@ void processudp(u8 * buf, int len, struct sockaddr_in *addr)
                                }
                                if (*b & 0x3C)
                                {
                                }
                                if (*b & 0x3C)
                                {

-                                       LOG(1, ntohl(addr->sin_addr.s_addr), s, t, "Unrecognised AVP flags %02X\n", *b);
+                                       LOG(1, s, t, "Unrecognised AVP flags %02X\n", *b);

                                        fatal = flags;
                                        continue; // next
                                }
                                b += 2;
                                if (*(u16 *) (b))
                                {
                                        fatal = flags;
                                        continue; // next
                                }
                                b += 2;
                                if (*(u16 *) (b))
                                {

-                                       LOG(2, ntohl(addr->sin_addr.s_addr), s, t, "Unknown AVP vendor %d\n", ntohs(*(u16 *) (b)));
+                                       LOG(2, s, t, "Unknown AVP vendor %d\n", ntohs(*(u16 *) (b)));

                                        fatal = flags;
                                        continue; // next
                                }
                                        fatal = flags;
                                        continue; // next
                                }


@@ -1460,13 +1515,12 @@ void processudp(u8 * buf, int len, struct sockaddr_in *addr)
                                b += 2;
                                n -= 6;
 
                                b += 2;
                                n -= 6;
 

-                               LOG(4, ntohl(addr->sin_addr.s_addr), s, t, "   AVP %d (%s) len %d\n", mtype, avpnames[mtype], n);
+                               LOG(4, s, t, "   AVP %d (%s) len %d\n", mtype, avpnames[mtype], n);

                                switch (mtype)
                                {
                                case 0:     // message type
                                        message = ntohs(*(u16 *) b);
                                switch (mtype)
                                {
                                case 0:     // message type
                                        message = ntohs(*(u16 *) b);

-                                       LOG(4, ntohl(addr->sin_addr.s_addr), s, t, "   Message type = %d (%s)\n", *b,
-                                                       l2tp_message_types[message]);
+                                       LOG(4, s, t, "   Message type = %d (%s)\n", *b, l2tp_message_types[message]);

                                        mandatorymessage = flags;
                                        break;
                                case 1:     // result code
                                        mandatorymessage = flags;
                                        break;
                                case 1:     // result code


@@ -1484,20 +1538,17 @@ void processudp(u8 * buf, int len, struct sockaddr_in *addr)
                                                                resdesc = cdn_result_codes[rescode];
                                                }
 
                                                                resdesc = cdn_result_codes[rescode];
                                                }
 

-                                               LOG(4, ntohl(addr->sin_addr.s_addr), s, t, "   Result Code %d: %s\n",
-                                                       rescode, resdesc);
+                                               LOG(4, s, t, "   Result Code %d: %s\n", rescode, resdesc);

                                                if (n >= 4)
                                                {
                                                        u16 errcode = ntohs(*(u16 *)(b + 2));
                                                        const char* errdesc = "(unknown)";
                                                        if (errcode <= MAX_ERROR_CODE)
                                                                errdesc = error_codes[errcode];
                                                if (n >= 4)
                                                {
                                                        u16 errcode = ntohs(*(u16 *)(b + 2));
                                                        const char* errdesc = "(unknown)";
                                                        if (errcode <= MAX_ERROR_CODE)
                                                                errdesc = error_codes[errcode];

-                                                       LOG(4, ntohl(addr->sin_addr.s_addr), s, t, "   Error Code %d: %s\n",
-                                                               errcode, errdesc);
+                                                       LOG(4, s, t, "   Error Code %d: %s\n", errcode, errdesc);

                                                }
                                                if (n > 4)
                                                }
                                                if (n > 4)

-                                                       LOG(4, ntohl(addr->sin_addr.s_addr), s, t, "   Error String: %.*s\n",
-                                                               n-4, b+4);
+                                                       LOG(4, s, t, "   Error String: %.*s\n", n-4, b+4);

 
                                                break;
                                        }
 
                                                break;
                                        }


@@ -1505,85 +1556,84 @@ void processudp(u8 * buf, int len, struct sockaddr_in *addr)
                                case 2:     // protocol version
                                        {
                                                version = ntohs(*(u16 *) (b));
                                case 2:     // protocol version
                                        {
                                                version = ntohs(*(u16 *) (b));

-                                               LOG(4, ntohl(addr->sin_addr.s_addr), s, t, "   Protocol version = %d\n", version);
+                                               LOG(4, s, t, "   Protocol version = %d\n", version);

                                                if (version && version != 0x0100)
                                                {   // allow 0.0 and 1.0
                                                if (version && version != 0x0100)
                                                {   // allow 0.0 and 1.0

-                                                       LOG(1, ntohl(addr->sin_addr.s_addr), s, t, "   Bad protocol version %04X\n",
-                                                                       version);
+                                                       LOG(1, s, t, "   Bad protocol version %04X\n", version);

                                                        fatal = flags;
                                                        continue; // next
                                                }
                                        }
                                        break;
                                case 3:     // framing capabilities
                                                        fatal = flags;
                                                        continue; // next
                                                }
                                        }
                                        break;
                                case 3:     // framing capabilities

-//                                     LOG(4, ntohl(addr->sin_addr.s_addr), s, t, "Framing capabilities\n");
+//                                     LOG(4, s, t, "Framing capabilities\n");

                                        break;
                                case 4:     // bearer capabilities
                                        break;
                                case 4:     // bearer capabilities

-//                                     LOG(4, ntohl(addr->sin_addr.s_addr), s, t, "Bearer capabilities\n");
+//                                     LOG(4, s, t, "Bearer capabilities\n");

                                        break;
                                case 5:         // tie breaker
                                        // We never open tunnels, so we don't care about tie breakers
                                        break;
                                case 5:         // tie breaker
                                        // We never open tunnels, so we don't care about tie breakers

-//                                     LOG(4, ntohl(addr->sin_addr.s_addr), s, t, "Tie breaker\n");
+//                                     LOG(4, s, t, "Tie breaker\n");

                                        continue;
                                case 6:     // firmware revision
                                        continue;
                                case 6:     // firmware revision

-//                                     LOG(4, ntohl(addr->sin_addr.s_addr), s, t, "Firmware revision\n");
+//                                     LOG(4, s, t, "Firmware revision\n");

                                        break;
                                case 7:     // host name
                                        memset(tunnel[t].hostname, 0, 128);
                                        memcpy(tunnel[t].hostname, b, (n >= 127) ? 127 : n);
                                        break;
                                case 7:     // host name
                                        memset(tunnel[t].hostname, 0, 128);
                                        memcpy(tunnel[t].hostname, b, (n >= 127) ? 127 : n);

-                                       LOG(4, ntohl(addr->sin_addr.s_addr), s, t, "   Tunnel hostname = \"%s\"\n", tunnel[t].hostname);
+                                       LOG(4, s, t, "   Tunnel hostname = \"%s\"\n", tunnel[t].hostname);

                                        // TBA - to send to RADIUS
                                        break;
                                case 8:     // vendor name
                                        memset(tunnel[t].vendor, 0, sizeof(tunnel[t].vendor));
                                        memcpy(tunnel[t].vendor, b, (n >= sizeof(tunnel[t].vendor) - 1) ? sizeof(tunnel[t].vendor) - 1 : n);
                                        // TBA - to send to RADIUS
                                        break;
                                case 8:     // vendor name
                                        memset(tunnel[t].vendor, 0, sizeof(tunnel[t].vendor));
                                        memcpy(tunnel[t].vendor, b, (n >= sizeof(tunnel[t].vendor) - 1) ? sizeof(tunnel[t].vendor) - 1 : n);

-                                       LOG(4, ntohl(addr->sin_addr.s_addr), s, t, "   Vendor name = \"%s\"\n", tunnel[t].vendor);
+                                       LOG(4, s, t, "   Vendor name = \"%s\"\n", tunnel[t].vendor);

                                        break;
                                case 9:     // assigned tunnel
                                        tunnel[t].far = ntohs(*(u16 *) (b));
                                        break;
                                case 9:     // assigned tunnel
                                        tunnel[t].far = ntohs(*(u16 *) (b));

-                                       LOG(4, ntohl(addr->sin_addr.s_addr), s, t, "   Remote tunnel id = %d\n", tunnel[t].far);
+                                       LOG(4, s, t, "   Remote tunnel id = %d\n", tunnel[t].far);

                                        break;
                                case 10:    // rx window
                                        tunnel[t].window = ntohs(*(u16 *) (b));
                                        if (!tunnel[t].window)
                                                tunnel[t].window = 1; // window of 0 is silly
                                        break;
                                case 10:    // rx window
                                        tunnel[t].window = ntohs(*(u16 *) (b));
                                        if (!tunnel[t].window)
                                                tunnel[t].window = 1; // window of 0 is silly

-                                       LOG(4, ntohl(addr->sin_addr.s_addr), s, t, "   rx window = %d\n", tunnel[t].window);
+                                       LOG(4, s, t, "   rx window = %d\n", tunnel[t].window);

                                        break;
                                case 11:        // Challenge
                                        {
                                        break;
                                case 11:        // Challenge
                                        {

-                                               LOG(4, ntohl(addr->sin_addr.s_addr), s, t, "   LAC requested CHAP authentication for tunnel\n");
+                                               LOG(4, s, t, "   LAC requested CHAP authentication for tunnel\n");

                                                build_chap_response(b, 2, n, &chapresponse);
                                        }
                                        break;
                                case 13:    // Response
                                        // Why did they send a response? We never challenge.
                                                build_chap_response(b, 2, n, &chapresponse);
                                        }
                                        break;
                                case 13:    // Response
                                        // Why did they send a response? We never challenge.

-                                       LOG(2, ntohl(addr->sin_addr.s_addr), s, t, "   received unexpected challenge response\n");
+                                       LOG(2, s, t, "   received unexpected challenge response\n");

                                        break;
 
                                case 14:    // assigned session
                                        asession = session[s].far = ntohs(*(u16 *) (b));
                                        break;
 
                                case 14:    // assigned session
                                        asession = session[s].far = ntohs(*(u16 *) (b));

-                                       LOG(4, ntohl(addr->sin_addr.s_addr), s, t, "   assigned session = %d\n", asession);
+                                       LOG(4, s, t, "   assigned session = %d\n", asession);

                                        break;
                                case 15:    // call serial number
                                        break;
                                case 15:    // call serial number

-                                       LOG(4, ntohl(addr->sin_addr.s_addr), s, t, "   call serial number = %d\n", ntohl(*(u32 *)b));
+                                       LOG(4, s, t, "   call serial number = %d\n", ntohl(*(u32 *)b));

                                        break;
                                case 18:    // bearer type
                                        break;
                                case 18:    // bearer type

-                                       LOG(4, ntohl(addr->sin_addr.s_addr), s, t, "   bearer type = %d\n", ntohl(*(u32 *)b));
+                                       LOG(4, s, t, "   bearer type = %d\n", ntohl(*(u32 *)b));

                                        // TBA - for RADIUS
                                        break;
                                case 19:    // framing type
                                        // TBA - for RADIUS
                                        break;
                                case 19:    // framing type

-                                       LOG(4, ntohl(addr->sin_addr.s_addr), s, t, "   framing type = %d\n", ntohl(*(u32 *)b));
+                                       LOG(4, s, t, "   framing type = %d\n", ntohl(*(u32 *)b));

                                        // TBA
                                        break;
                                case 21:    // called number
                                        memset(called, 0, MAXTEL);
                                        memcpy(called, b, (n >= MAXTEL) ? (MAXTEL-1) : n);
                                        // TBA
                                        break;
                                case 21:    // called number
                                        memset(called, 0, MAXTEL);
                                        memcpy(called, b, (n >= MAXTEL) ? (MAXTEL-1) : n);

-                                       LOG(4, ntohl(addr->sin_addr.s_addr), s, t, "   Called <%s>\n", called);
+                                       LOG(4, s, t, "   Called <%s>\n", called);

                                        break;
                                case 22:    // calling number
                                        memset(calling, 0, MAXTEL);
                                        memcpy(calling, b, (n >= MAXTEL) ? (MAXTEL-1) : n);
                                        break;
                                case 22:    // calling number
                                        memset(calling, 0, MAXTEL);
                                        memcpy(calling, b, (n >= MAXTEL) ? (MAXTEL-1) : n);

-                                       LOG(4, ntohl(addr->sin_addr.s_addr), s, t, "   Calling <%s>\n", calling);
+                                       LOG(4, s, t, "   Calling <%s>\n", calling);

                                        break;
                                case 23:    // subtype
                                        break;
                                        break;
                                case 23:    // subtype
                                        break;


@@ -1599,8 +1649,7 @@ void processudp(u8 * buf, int len, struct sockaddr_in *addr)
                                                memcpy(tmp, b, (n >= 30) ? 30 : n);
                                                session[s].tx_connect_speed = atol(tmp);
                                        }
                                                memcpy(tmp, b, (n >= 30) ? 30 : n);
                                                session[s].tx_connect_speed = atol(tmp);
                                        }

-                                       LOG(4, ntohl(addr->sin_addr.s_addr), s, t, "   TX connect speed <%u>\n",
-                                                       session[s].tx_connect_speed);
+                                       LOG(4, s, t, "   TX connect speed <%u>\n", session[s].tx_connect_speed);

                                        break;
                                case 38:    // rx connect speed
                                        if (n == 4)
                                        break;
                                case 38:    // rx connect speed
                                        if (n == 4)


@@ -1614,20 +1663,18 @@ void processudp(u8 * buf, int len, struct sockaddr_in *addr)
                                                memcpy(tmp, b, (n >= 30) ? 30 : n);
                                                session[s].rx_connect_speed = atol(tmp);
                                        }
                                                memcpy(tmp, b, (n >= 30) ? 30 : n);
                                                session[s].rx_connect_speed = atol(tmp);
                                        }

-                                       LOG(4, ntohl(addr->sin_addr.s_addr), s, t, "   RX connect speed <%u>\n",
-                                                       session[s].rx_connect_speed);
+                                       LOG(4, s, t, "   RX connect speed <%u>\n", session[s].rx_connect_speed);

                                        break;
                                case 25:    // Physical Channel ID
                                        {
                                                u32 tmp = ntohl(*(u32 *)b);
                                        break;
                                case 25:    // Physical Channel ID
                                        {
                                                u32 tmp = ntohl(*(u32 *)b);

-                                               LOG(4, ntohl(addr->sin_addr.s_addr), s, t, "   Physical Channel ID <%X>\n", tmp);
+                                               LOG(4, s, t, "   Physical Channel ID <%X>\n", tmp);

                                                break;
                                        }
                                case 29:    // Proxy Authentication Type
                                        {
                                                u16 authtype = ntohs(*(u16 *)b);
                                                break;
                                        }
                                case 29:    // Proxy Authentication Type
                                        {
                                                u16 authtype = ntohs(*(u16 *)b);

-                                               LOG(4, ntohl(addr->sin_addr.s_addr), s, t, "   Proxy Auth Type %d (%s)\n",
-                                                       authtype, authtypes[authtype]);
+                                               LOG(4, s, t, "   Proxy Auth Type %d (%s)\n", authtype, authtypes[authtype]);

                                                requestchap = (authtype == 2);
                                                break;
                                        }
                                                requestchap = (authtype == 2);
                                                break;
                                        }


@@ -1635,21 +1682,20 @@ void processudp(u8 * buf, int len, struct sockaddr_in *addr)
                                        {
                                                char authname[64] = {0};
                                                memcpy(authname, b, (n > 63) ? 63 : n);
                                        {
                                                char authname[64] = {0};
                                                memcpy(authname, b, (n > 63) ? 63 : n);

-                                               LOG(4, ntohl(addr->sin_addr.s_addr), s, t, "   Proxy Auth Name (%s)\n",
+                                               LOG(4, s, t, "   Proxy Auth Name (%s)\n",

                                                        authname);
                                                break;
                                        }
                                case 31:    // Proxy Authentication Challenge
                                        {
                                                memcpy(radius[session[s].radius].auth, b, 16);
                                                        authname);
                                                break;
                                        }
                                case 31:    // Proxy Authentication Challenge
                                        {
                                                memcpy(radius[session[s].radius].auth, b, 16);

-                                               LOG(4, ntohl(addr->sin_addr.s_addr), s, t, "   Proxy Auth Challenge\n");
+                                               LOG(4, s, t, "   Proxy Auth Challenge\n");

                                                break;
                                        }
                                case 32:    // Proxy Authentication ID
                                        {
                                                u16 authid = ntohs(*(u16 *)(b));
                                                break;
                                        }
                                case 32:    // Proxy Authentication ID
                                        {
                                                u16 authid = ntohs(*(u16 *)(b));

-                                               LOG(4, ntohl(addr->sin_addr.s_addr), s, t, "   Proxy Auth ID (%d)\n",
-                                                       authid);
+                                               LOG(4, s, t, "   Proxy Auth ID (%d)\n", authid);

                                                if (session[s].radius)
                                                        radius[session[s].radius].id = authid;
                                                break;
                                                if (session[s].radius)
                                                        radius[session[s].radius].id = authid;
                                                break;


@@ -1658,7 +1704,7 @@ void processudp(u8 * buf, int len, struct sockaddr_in *addr)
                                        {
                                                char authresp[64] = {0};
                                                memcpy(authresp, b, (n > 63) ? 63 : n);
                                        {
                                                char authresp[64] = {0};
                                                memcpy(authresp, b, (n > 63) ? 63 : n);

-                                               LOG(4, ntohl(addr->sin_addr.s_addr), s, t, "   Proxy Auth Response\n");
+                                               LOG(4, s, t, "   Proxy Auth Response\n");

                                                break;
                                        }
                                case 27:    // last send lcp
                                                break;
                                        }
                                case 27:    // last send lcp


@@ -1685,13 +1731,13 @@ void processudp(u8 * buf, int len, struct sockaddr_in *addr)
                                case 39:    // seq required - we control it as an LNS anyway...
                                        break;
                                case 36:    // Random Vector
                                case 39:    // seq required - we control it as an LNS anyway...
                                        break;
                                case 36:    // Random Vector

-                                       LOG(4, ntohl(addr->sin_addr.s_addr), s, t, "   Random Vector received. Enabled AVP Hiding.\n");
+                                       LOG(4, s, t, "   Random Vector received. Enabled AVP Hiding.\n");

                                        memset(session[s].random_vector, 0, sizeof(session[s].random_vector));
                                        memcpy(session[s].random_vector, b, n);
                                        session[s].random_vector_length = n;
                                        break;
                                default:
                                        memset(session[s].random_vector, 0, sizeof(session[s].random_vector));
                                        memcpy(session[s].random_vector, b, n);
                                        session[s].random_vector_length = n;
                                        break;
                                default:

-                                       LOG(2, ntohl(addr->sin_addr.s_addr), s, t, "   Unknown AVP type %d\n", mtype);
+                                       LOG(2, s, t, "   Unknown AVP type %d\n", mtype);

                                        fatal = flags;
                                        continue; // next
                                }
                                        fatal = flags;
                                        continue; // next
                                }


@@ -1759,7 +1805,7 @@ void processudp(u8 * buf, int len, struct sockaddr_in *addr)
                                                // make a RADIUS session
                                                if (!(r = radiusnew(s)))
                                                {
                                                // make a RADIUS session
                                                if (!(r = radiusnew(s)))
                                                {

-                                                       LOG(1, ntohl(addr->sin_addr.s_addr), s, t, "No free RADIUS sessions for ICRQ\n");
+                                                       LOG(1, s, t, "No free RADIUS sessions for ICRQ\n");

                                                        sessionkill(s, "no free RADIUS sesions");
                                                        return;
                                                }
                                                        sessionkill(s, "no free RADIUS sesions");
                                                        return;
                                                }


@@ -1770,7 +1816,7 @@ void processudp(u8 * buf, int len, struct sockaddr_in *addr)
                                                session[s].tunnel = t;
                                                session[s].far = asession;
                                                session[s].last_packet = time_now;
                                                session[s].tunnel = t;
                                                session[s].far = asession;
                                                session[s].last_packet = time_now;

-                                               LOG(3, ntohl(addr->sin_addr.s_addr), s, t, "New session (%d/%d)\n", tunnel[t].far, session[s].far);
+                                               LOG(3, s, t, "New session (%d/%d)\n", tunnel[t].far, session[s].far);

                                                control16(c, 14, s, 1); // assigned session
                                                controladd(c, t, s); // send the reply
                                                {
                                                control16(c, 14, s, 1); // assigned session
                                                controladd(c, t, s); // send the reply
                                                {


@@ -1792,7 +1838,7 @@ void processudp(u8 * buf, int len, struct sockaddr_in *addr)
                                        if (amagic == 0) amagic = time_now;
                                        session[s].magic = amagic; // set magic number
                                        session[s].l2tp_flags = aflags; // set flags received
                                        if (amagic == 0) amagic = time_now;
                                        session[s].magic = amagic; // set magic number
                                        session[s].l2tp_flags = aflags; // set flags received

-                                       LOG(3, ntohl(addr->sin_addr.s_addr), s, t, "Magic %X Flags %X\n", amagic, aflags);
+                                       LOG(3, s, t, "Magic %X Flags %X\n", amagic, aflags);

                                        controlnull(t); // ack
                                        // In CHAP state, request PAP instead
                                        if (requestchap)
                                        controlnull(t); // ack
                                        // In CHAP state, request PAP instead
                                        if (requestchap)


@@ -1803,14 +1849,14 @@ void processudp(u8 * buf, int len, struct sockaddr_in *addr)
                                        sessionshutdown(s, "Closed (Received CDN)");
                                        break;
                                case 0xFFFF:
                                        sessionshutdown(s, "Closed (Received CDN)");
                                        break;
                                case 0xFFFF:

-                                       LOG(1, ntohl(addr->sin_addr.s_addr), s, t, "Missing message type\n");
+                                       LOG(1, s, t, "Missing message type\n");

                                        break;
                                default:
                                        STAT(tunnel_rx_errors);
                                        if (mandatorymessage & 0x80)
                                                tunnelshutdown(t, "Unknown message");
                                        else
                                        break;
                                default:
                                        STAT(tunnel_rx_errors);
                                        if (mandatorymessage & 0x80)
                                                tunnelshutdown(t, "Unknown message");
                                        else

-                                               LOG(1, ntohl(addr->sin_addr.s_addr), s, t, "Unknown message type %d\n", message);
+                                               LOG(1, s, t, "Unknown message type %d\n", message);

                                        break;
                                }
                        if (chapresponse) free(chapresponse);
                                        break;
                                }
                        if (chapresponse) free(chapresponse);


@@ -1818,7 +1864,7 @@ void processudp(u8 * buf, int len, struct sockaddr_in *addr)
                }
                else
                {
                }
                else
                {

-                       LOG(4, 0, s, t, "   Got a ZLB ack\n");
+                       LOG(4, s, t, "   Got a ZLB ack\n");

                }
        }
        else
                }
        }
        else


@@ -1833,7 +1879,7 @@ void processudp(u8 * buf, int len, struct sockaddr_in *addr)
                }
                if (l < 2)
                {
                }
                if (l < 2)
                {

-                       LOG(1, ntohl(addr->sin_addr.s_addr), s, t, "Short ppp length %d\n", l);
+                       LOG(1, s, t, "Short ppp length %d\n", l);

                        STAT(tunnel_rx_errors);
                        return;
                }
                        STAT(tunnel_rx_errors);
                        return;
                }


@@ -1859,16 +1905,16 @@ void processudp(u8 * buf, int len, struct sockaddr_in *addr)
                        }
 
 
                        }
 
 

-                       LOG(1, ntohl(addr->sin_addr.s_addr), s, t, "UDP packet contains session %d "
-                                       "but no session[%d].tunnel exists (LAC said"
-                                       " tunnel = %d). Dropping packet.\n", s, s, t);
+                       LOG(1, s, t, "UDP packet contains session %d but no session[%d].tunnel "
+                                    "exists (LAC said tunnel = %d).  Dropping packet.\n", s, s, t);
+

                        STAT(tunnel_rx_errors);
                        return;
                }
 
                if (session[s].die)
                {
                        STAT(tunnel_rx_errors);
                        return;
                }
 
                if (session[s].die)
                {

-                       LOG(3, ntohl(addr->sin_addr.s_addr), s, t, "Session %d is closing. Don't process PPP packets\n", s);
+                       LOG(3, s, t, "Session %d is closing. Don't process PPP packets\n", s);

 // I'm pretty sure this isn't right -- mo.
 //                     return;              // closing session, PPP not processed
                }
 // I'm pretty sure this isn't right -- mo.
 //                     return;              // closing session, PPP not processed
                }


@@ -1915,13 +1961,13 @@ void processudp(u8 * buf, int len, struct sockaddr_in *addr)
                else
                {
                        STAT(tunnel_rx_errors);
                else
                {
                        STAT(tunnel_rx_errors);

-                       LOG(1, ntohl(addr->sin_addr.s_addr), s, t, "Unknown PPP protocol %04X\n", prot);
+                       LOG(1, s, t, "Unknown PPP protocol %04X\n", prot);

                }
        }
 }
 
 // read and process packet on tun
                }
        }
 }
 
 // read and process packet on tun

-void processtun(u8 * buf, int len)
+static void processtun(u8 * buf, int len)

 {
        LOG_HEX(5, "Receive TUN Data", buf, len);
        STAT(tun_rx_packets);
 {
        LOG_HEX(5, "Receive TUN Data", buf, len);
        STAT(tun_rx_packets);


@@ -1933,7 +1979,7 @@ void processtun(u8 * buf, int len)
        eth_rx += len;
        if (len < 22)
        {
        eth_rx += len;
        if (len < 22)
        {

-               LOG(1, 0, 0, 0, "Short tun packet %d bytes\n", len);
+               LOG(1, 0, 0, "Short tun packet %d bytes\n", len);

                STAT(tun_rx_errors);
                return;
        }
                STAT(tun_rx_errors);
                return;
        }


@@ -1949,7 +1995,7 @@ void processtun(u8 * buf, int len)
 // at once.
 #define MAX_ACTIONS 500
 
 // at once.
 #define MAX_ACTIONS 500
 

-int regular_cleanups(void)
+static int regular_cleanups(void)

 {
        static sessionidt s = 0;        // Next session to check for actions on.
        tunnelidt t;
 {
        static sessionidt s = 0;        // Next session to check for actions on.
        tunnelidt t;


@@ -1958,7 +2004,7 @@ int regular_cleanups(void)
        static clockt next_acct = 0;
        int a;
 
        static clockt next_acct = 0;
        int a;
 

-       LOG(3, 0, 0, 0, "Begin regular cleanup\n");
+       LOG(3, 0, 0, "Begin regular cleanup\n");

 
        for (r = 1; r < MAXRADIUS; r++)
        {
 
        for (r = 1; r < MAXRADIUS; r++)
        {


@@ -2004,7 +2050,7 @@ int regular_cleanups(void)
                {
                        controlt *c = controlnew(6); // sending HELLO
                        controladd(c, t, 0); // send the message
                {
                        controlt *c = controlnew(6); // sending HELLO
                        controladd(c, t, 0); // send the message

-                       LOG(3, tunnel[t].ip, 0, t, "Sending HELLO message\n");
+                       LOG(3, 0, t, "Sending HELLO message\n");

                }
 
                // Check for tunnel changes requested from the CLI
                }
 
                // Check for tunnel changes requested from the CLI


@@ -2013,7 +2059,7 @@ int regular_cleanups(void)
                        cli_tunnel_actions[t].action = 0;
                        if (a & CLI_TUN_KILL)
                        {
                        cli_tunnel_actions[t].action = 0;
                        if (a & CLI_TUN_KILL)
                        {

-                               LOG(2, tunnel[t].ip, 0, t, "Dropping tunnel by CLI\n");
+                               LOG(2, 0, t, "Dropping tunnel by CLI\n");

                                tunnelshutdown(t, "Requested by administrator");
                        }
                }
                                tunnelshutdown(t, "Requested by administrator");
                        }
                }


@@ -2033,7 +2079,7 @@ int regular_cleanups(void)
                if (!session[s].die && session[s].ip && !(session[s].flags & SF_IPCP_ACKED))
                {
                        // IPCP has not completed yet. Resend
                if (!session[s].die && session[s].ip && !(session[s].flags & SF_IPCP_ACKED))
                {
                        // IPCP has not completed yet. Resend

-                       LOG(3, session[s].ip, s, session[s].tunnel, "No ACK for initial IPCP ConfigReq... resending\n");
+                       LOG(3, s, session[s].tunnel, "No ACK for initial IPCP ConfigReq... resending\n");

                        sendipcp(session[s].tunnel, s);
                }
 
                        sendipcp(session[s].tunnel, s);
                }
 


@@ -2060,18 +2106,14 @@ int regular_cleanups(void)
                        u8 b[MAXCONTROL] = {0};
 
                        u8 *q = makeppp(b, sizeof(b), 0, 0, session[s].tunnel, s, PPPLCP);
                        u8 b[MAXCONTROL] = {0};
 
                        u8 *q = makeppp(b, sizeof(b), 0, 0, session[s].tunnel, s, PPPLCP);

-                       if (!q)
-                       {
-                               LOG(3, session[s].ip, s, t, "failed to send ECHO packet.\n");
-                               continue;
-                       }
+                       if (!q) continue;

 
                        *q = EchoReq;
                        *(u8 *)(q + 1) = (time_now % 255); // ID
                        *(u16 *)(q + 2) = htons(8); // Length
                        *(u32 *)(q + 4) = 0; // Magic Number (not supported)
 
 
                        *q = EchoReq;
                        *(u8 *)(q + 1) = (time_now % 255); // ID
                        *(u16 *)(q + 2) = htons(8); // Length
                        *(u32 *)(q + 4) = 0; // Magic Number (not supported)
 

-                       LOG(4, session[s].ip, s, session[s].tunnel, "No data in %d seconds, sending LCP ECHO\n",
+                       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
                        if (++count >= MAX_ACTIONS) break;
                                        (int)(time_now - session[s].last_packet));
                        tunnelsend(b, 24, session[s].tunnel); // send it
                        if (++count >= MAX_ACTIONS) break;


@@ -2085,22 +2127,23 @@ int regular_cleanups(void)
                        cli_session_actions[s].action = 0;
                        if (a & CLI_SESS_KILL)
                        {
                        cli_session_actions[s].action = 0;
                        if (a & CLI_SESS_KILL)
                        {

-                               LOG(2, 0, s, session[s].tunnel, "Dropping session by CLI\n");
+                               LOG(2, s, session[s].tunnel, "Dropping session by CLI\n");

                                sessionshutdown(s, "Requested by administrator");
                                a = 0; // dead, no need to check for other actions
                        }
 
                        if (a & CLI_SESS_NOSNOOP)
                        {
                                sessionshutdown(s, "Requested by administrator");
                                a = 0; // dead, no need to check for other actions
                        }
 
                        if (a & CLI_SESS_NOSNOOP)
                        {

-                               LOG(2, 0, s, session[s].tunnel, "Unsnooping session by CLI\n");
+                               LOG(2, s, session[s].tunnel, "Unsnooping session by CLI\n");

                                session[s].snoop_ip = 0;
                                session[s].snoop_port = 0;
                                send++;
                        }
                        else if (a & CLI_SESS_SNOOP)
                        {
                                session[s].snoop_ip = 0;
                                session[s].snoop_port = 0;
                                send++;
                        }
                        else if (a & CLI_SESS_SNOOP)
                        {

-                               LOG(2, 0, s, session[s].tunnel, "Snooping session by CLI (to %s:%d)\n",
-                                   inet_toa(cli_session_actions[s].snoop_ip), cli_session_actions[s].snoop_port);
+                               LOG(2, s, session[s].tunnel, "Snooping session by CLI (to %s:%d)\n",
+                                   fmtaddr(cli_session_actions[s].snoop_ip, 0),
+                                   cli_session_actions[s].snoop_port);

 
                                session[s].snoop_ip = cli_session_actions[s].snoop_ip;
                                session[s].snoop_port = cli_session_actions[s].snoop_port;
 
                                session[s].snoop_ip = cli_session_actions[s].snoop_ip;
                                session[s].snoop_port = cli_session_actions[s].snoop_port;


@@ -2109,13 +2152,13 @@ int regular_cleanups(void)
 
                        if (a & CLI_SESS_NOTHROTTLE)
                        {
 
                        if (a & CLI_SESS_NOTHROTTLE)
                        {

-                               LOG(2, 0, s, session[s].tunnel, "Un-throttling session by CLI\n");
+                               LOG(2, s, session[s].tunnel, "Un-throttling session by CLI\n");

                                throttle_session(s, 0, 0);
                                send++;
                        }
                        else if (a & CLI_SESS_THROTTLE)
                        {
                                throttle_session(s, 0, 0);
                                send++;
                        }
                        else if (a & CLI_SESS_THROTTLE)
                        {

-                               LOG(2, 0, s, session[s].tunnel, "Throttling session by CLI (to %dkb/s up and %dkb/s down)\n",
+                               LOG(2, s, session[s].tunnel, "Throttling session by CLI (to %dkb/s up and %dkb/s down)\n",

                                    cli_session_actions[s].throttle_in,
                                    cli_session_actions[s].throttle_out);
 
                                    cli_session_actions[s].throttle_in,
                                    cli_session_actions[s].throttle_out);
 


@@ -2123,6 +2166,22 @@ int regular_cleanups(void)
                                send++;
                        }
 
                                send++;
                        }
 

+                       if (a & CLI_SESS_NOFILTER)
+                       {
+                               LOG(2, s, session[s].tunnel, "Un-filtering session by CLI\n");
+                               filter_session(s, 0, 0);
+                               send++;
+                       }
+                       else if (a & CLI_SESS_FILTER)
+                       {
+                               LOG(2, s, session[s].tunnel, "Filtering session by CLI (in=%d, out=%d)\n",
+                                   cli_session_actions[s].filter_in,
+                                   cli_session_actions[s].filter_out);
+
+                               filter_session(s, cli_session_actions[s].filter_in, cli_session_actions[s].filter_out);
+                               send++;
+                       }
+

                        if (send)
                                cluster_send_session(s);
 
                        if (send)
                                cluster_send_session(s);
 


@@ -2140,7 +2199,7 @@ int regular_cleanups(void)
        if (count >= MAX_ACTIONS)
                return 1;       // Didn't finish!
 
        if (count >= MAX_ACTIONS)
                return 1;       // Didn't finish!
 

-       LOG(3, 0, 0, 0, "End regular cleanup (%d actions), next in %d seconds\n", count, config->cleanup_interval);
+       LOG(3, 0, 0, "End regular cleanup (%d actions), next in %d seconds\n", count, config->cleanup_interval);

        return 0;
 }
 
        return 0;
 }
 


@@ -2149,7 +2208,7 @@ int regular_cleanups(void)
 // Are we in the middle of a tunnel update, or radius
 // requests??
 //
 // Are we in the middle of a tunnel update, or radius
 // requests??
 //

-int still_busy(void)
+static int still_busy(void)

 {
        int i;
        static clockt last_talked = 0;
 {
        int i;
        static clockt last_talked = 0;


@@ -2164,7 +2223,7 @@ int still_busy(void)
 
                if (last_talked != TIME)
                {
 
                if (last_talked != TIME)
                {

-                       LOG(2,0,0,0, "Tunnel %d still has un-acked control messages.\n", i);
+                       LOG(2, 0, 0, "Tunnel %d still has un-acked control messages.\n", i);

                        last_talked = TIME;
                }
                return 1;
                        last_talked = TIME;
                }
                return 1;


@@ -2173,7 +2232,7 @@ int still_busy(void)
        // We stop waiting for radius after BUSY_WAIT_TIME 1/10th seconds
        if (abs(TIME - start_busy_wait) > BUSY_WAIT_TIME)
        {
        // We stop waiting for radius after BUSY_WAIT_TIME 1/10th seconds
        if (abs(TIME - start_busy_wait) > BUSY_WAIT_TIME)
        {

-               LOG(1, 0, 0, 0, "Giving up waiting for RADIUS to be empty. Shutting down anyway.\n");
+               LOG(1, 0, 0, "Giving up waiting for RADIUS to be empty. Shutting down anyway.\n");

                return 0;
        }
 
                return 0;
        }
 


@@ -2186,7 +2245,7 @@ int still_busy(void)
 
                if (last_talked != TIME)
                {
 
                if (last_talked != TIME)
                {

-                       LOG(2,0,0,0, "Radius session %d is still busy (sid %d)\n", i, radius[i].session);
+                       LOG(2, 0, 0, "Radius session %d is still busy (sid %d)\n", i, radius[i].session);

                        last_talked = TIME;
                }
                return 1;
                        last_talked = TIME;
                }
                return 1;


@@ -2199,7 +2258,7 @@ static fd_set readset;
 static int readset_n = 0;
 
 // main loop - gets packets on tun or udp and processes them
 static int readset_n = 0;
 
 // main loop - gets packets on tun or udp and processes them

-void mainloop(void)
+static void mainloop(void)

 {
        int i;
        u8 buf[65536];
 {
        int i;
        u8 buf[65536];


@@ -2207,8 +2266,8 @@ void mainloop(void)
        clockt next_cluster_ping = 0;   // send initial ping immediately
        time_t next_clean = time_now + config->cleanup_interval;
 
        clockt next_cluster_ping = 0;   // send initial ping immediately
        time_t next_clean = time_now + config->cleanup_interval;
 

-       LOG(4, 0, 0, 0, "Beginning of main loop. udpfd=%d, tunfd=%d, cluster_sockfd=%d, controlfd=%d\n",
-                       udpfd, tunfd, cluster_sockfd, controlfd);
+       LOG(4, 0, 0, "Beginning of main loop. udpfd=%d, tunfd=%d, cluster_sockfd=%d, controlfd=%d\n",
+               udpfd, tunfd, cluster_sockfd, controlfd);

 
        FD_ZERO(&readset);
        FD_SET(udpfd, &readset);
 
        FD_ZERO(&readset);
        FD_SET(udpfd, &readset);


@@ -2273,7 +2332,7 @@ void mainloop(void)
                            errno == ECHILD) // EINTR was clobbered by sigchild_handler()
                                continue;
 
                            errno == ECHILD) // EINTR was clobbered by sigchild_handler()
                                continue;
 

-                       LOG(0, 0, 0, 0, "Error returned from select(): %s\n", strerror(errno));
+                       LOG(0, 0, 0, "Error returned from select(): %s\n", strerror(errno));

                        main_quit++;
                        break;
                }
                        main_quit++;
                        break;
                }


@@ -2317,7 +2376,7 @@ void mainloop(void)
                        }
 
                        if (FD_ISSET(controlfd, &r))
                        }
 
                        if (FD_ISSET(controlfd, &r))

-                               processcontrol(buf, recvfrom(controlfd, buf, sizeof(buf), MSG_WAITALL, (void *) &addr, &alen), &addr);
+                               processcontrol(buf, recvfrom(controlfd, buf, sizeof(buf), MSG_WAITALL, (void *) &addr, &alen), &addr, alen);

 
                        if (FD_ISSET(clifd, &r))
                        {
 
                        if (FD_ISSET(clifd, &r))
                        {


@@ -2327,7 +2386,7 @@ void mainloop(void)
 
                                if ((sockfd = accept(clifd, (struct sockaddr *)&addr, &len)) <= 0)
                                {
 
                                if ((sockfd = accept(clifd, (struct sockaddr *)&addr, &len)) <= 0)
                                {

-                                       LOG(0, 0, 0, 0, "accept error: %s\n", strerror(errno));
+                                       LOG(0, 0, 0, "accept error: %s\n", strerror(errno));

                                        continue;
                                }
                                else
                                        continue;
                                }
                                else


@@ -2474,21 +2533,21 @@ static void stripdomain(char *host)
 }
 
 // Init data structures
 }
 
 // Init data structures

-void initdata(int optdebug, char *optconfig)
+static void initdata(int optdebug, char *optconfig)

 {
        int i;
 
        if (!(_statistics = shared_malloc(sizeof(struct Tstats))))
        {
 {
        int i;
 
        if (!(_statistics = shared_malloc(sizeof(struct Tstats))))
        {

-               LOG(0, 0, 0, 0, "Error doing malloc for _statistics: %s\n", strerror(errno));
+               LOG(0, 0, 0, "Error doing malloc for _statistics: %s\n", strerror(errno));

                exit(1);
        }
                exit(1);
        }

-       if (!(config = shared_malloc(sizeof(struct configt))))
+       if (!(config = shared_malloc(sizeof(configt))))

        {
        {

-               LOG(0, 0, 0, 0, "Error doing malloc for configuration: %s\n", strerror(errno));
+               LOG(0, 0, 0, "Error doing malloc for configuration: %s\n", strerror(errno));

                exit(1);
        }
                exit(1);
        }

-       memset(config, 0, sizeof(struct configt));
+       memset(config, 0, sizeof(configt));

        time(&config->start_time);
        strncpy(config->config_file, optconfig, strlen(optconfig));
        config->debug = optdebug;
        time(&config->start_time);
        strncpy(config->config_file, optconfig, strlen(optconfig));
        config->debug = optdebug;


@@ -2497,37 +2556,44 @@ void initdata(int optdebug, char *optconfig)
 
        if (!(tunnel = shared_malloc(sizeof(tunnelt) * MAXTUNNEL)))
        {
 
        if (!(tunnel = shared_malloc(sizeof(tunnelt) * MAXTUNNEL)))
        {

-               LOG(0, 0, 0, 0, "Error doing malloc for tunnels: %s\n", strerror(errno));
+               LOG(0, 0, 0, "Error doing malloc for tunnels: %s\n", strerror(errno));

                exit(1);
        }
        if (!(session = shared_malloc(sizeof(sessiont) * MAXSESSION)))
        {
                exit(1);
        }
        if (!(session = shared_malloc(sizeof(sessiont) * MAXSESSION)))
        {

-               LOG(0, 0, 0, 0, "Error doing malloc for sessions: %s\n", strerror(errno));
+               LOG(0, 0, 0, "Error doing malloc for sessions: %s\n", strerror(errno));

                exit(1);
        }
 
        if (!(sess_count = shared_malloc(sizeof(sessioncountt) * MAXSESSION)))
        {
                exit(1);
        }
 
        if (!(sess_count = shared_malloc(sizeof(sessioncountt) * MAXSESSION)))
        {

-               LOG(0, 0, 0, 0, "Error doing malloc for sessions_count: %s\n", strerror(errno));
+               LOG(0, 0, 0, "Error doing malloc for sessions_count: %s\n", strerror(errno));

                exit(1);
        }
 
        if (!(radius = shared_malloc(sizeof(radiust) * MAXRADIUS)))
        {
                exit(1);
        }
 
        if (!(radius = shared_malloc(sizeof(radiust) * MAXRADIUS)))
        {

-               LOG(0, 0, 0, 0, "Error doing malloc for radius: %s\n", strerror(errno));
+               LOG(0, 0, 0, "Error doing malloc for radius: %s\n", strerror(errno));

                exit(1);
        }
 
        if (!(ip_address_pool = shared_malloc(sizeof(ippoolt) * MAXIPPOOL)))
        {
                exit(1);
        }
 
        if (!(ip_address_pool = shared_malloc(sizeof(ippoolt) * MAXIPPOOL)))
        {

-               LOG(0, 0, 0, 0, "Error doing malloc for ip_address_pool: %s\n", strerror(errno));
+               LOG(0, 0, 0, "Error doing malloc for ip_address_pool: %s\n", strerror(errno));

                exit(1);
        }
 
                exit(1);
        }
 

+if (!(ip_filters = shared_malloc(sizeof(ip_filtert) * MAXFILTER)))
+{
+       LOG(0, 0, 0, "Error doing malloc for ip_filters: %s\n", strerror(errno));
+       exit(1);
+}
+memset(ip_filters, 0, sizeof(ip_filtert) * MAXFILTER);
+

 #ifdef RINGBUFFER
        if (!(ringbuffer = shared_malloc(sizeof(struct Tringbuffer))))
        {
 #ifdef RINGBUFFER
        if (!(ringbuffer = shared_malloc(sizeof(struct Tringbuffer))))
        {

-               LOG(0, 0, 0, 0, "Error doing malloc for ringbuffer: %s\n", strerror(errno));
+               LOG(0, 0, 0, "Error doing malloc for ringbuffer: %s\n", strerror(errno));

                exit(1);
        }
        memset(ringbuffer, 0, sizeof(struct Tringbuffer));
                exit(1);
        }
        memset(ringbuffer, 0, sizeof(struct Tringbuffer));


@@ -2535,14 +2601,14 @@ void initdata(int optdebug, char *optconfig)
 
        if (!(cli_session_actions = shared_malloc(sizeof(struct cli_session_actions) * MAXSESSION)))
        {
 
        if (!(cli_session_actions = shared_malloc(sizeof(struct cli_session_actions) * MAXSESSION)))
        {

-               LOG(0, 0, 0, 0, "Error doing malloc for cli session actions: %s\n", strerror(errno));
+               LOG(0, 0, 0, "Error doing malloc for cli session actions: %s\n", strerror(errno));

                exit(1);
        }
        memset(cli_session_actions, 0, sizeof(struct cli_session_actions) * MAXSESSION);
 
        if (!(cli_tunnel_actions = shared_malloc(sizeof(struct cli_tunnel_actions) * MAXSESSION)))
        {
                exit(1);
        }
        memset(cli_session_actions, 0, sizeof(struct cli_session_actions) * MAXSESSION);
 
        if (!(cli_tunnel_actions = shared_malloc(sizeof(struct cli_tunnel_actions) * MAXSESSION)))
        {

-               LOG(0, 0, 0, 0, "Error doing malloc for cli tunnel actions: %s\n", strerror(errno));
+               LOG(0, 0, 0, "Error doing malloc for cli tunnel actions: %s\n", strerror(errno));

                exit(1);
        }
        memset(cli_tunnel_actions, 0, sizeof(struct cli_tunnel_actions) * MAXSESSION);
                exit(1);
        }
        memset(cli_tunnel_actions, 0, sizeof(struct cli_tunnel_actions) * MAXSESSION);


@@ -2575,15 +2641,15 @@ void initdata(int optdebug, char *optconfig)
        _statistics->start_time = _statistics->last_reset = time(NULL);
 
 #ifdef BGP
        _statistics->start_time = _statistics->last_reset = time(NULL);
 
 #ifdef BGP

-       if (!(bgp_peers = shared_malloc(sizeof(struct bgp_peer) * BGP_NUM_PEERS)))
-       {
-               LOG(0, 0, 0, 0, "Error doing malloc for bgp: %s\n", strerror(errno));
-               exit(1);
-       }
+       if (!(bgp_peers = shared_malloc(sizeof(struct bgp_peer) * BGP_NUM_PEERS)))
+       {
+               LOG(0, 0, 0, "Error doing malloc for bgp: %s\n", strerror(errno));
+               exit(1);
+       }

 #endif /* BGP */
 }
 
 #endif /* BGP */
 }
 

-int assign_ip_address(sessionidt s)
+static int assign_ip_address(sessionidt s)

 {
        u32 i;
        int best = -1;
 {
        u32 i;
        int best = -1;


@@ -2616,7 +2682,7 @@ int assign_ip_address(sessionidt s)
 
        if (best < 0)
        {
 
        if (best < 0)
        {

-               LOG(0, 0, s, session[s].tunnel, "assign_ip_address(): out of addresses\n");
+               LOG(0, s, session[s].tunnel, "assign_ip_address(): out of addresses\n");

                return 0;
        }
 
                return 0;
        }
 


@@ -2634,16 +2700,19 @@ int assign_ip_address(sessionidt s)
                strncpy(ip_address_pool[best].user, u, sizeof(ip_address_pool[best].user) - 1);
 
        STAT(ip_allocated);
                strncpy(ip_address_pool[best].user, u, sizeof(ip_address_pool[best].user) - 1);
 
        STAT(ip_allocated);

-       LOG(4, ip_address_pool[best].address, s, session[s].tunnel,
-               "assign_ip_address(): %s ip address %d from pool\n", reuse ? "Reusing" : "Allocating", best);
+       LOG(4, s, session[s].tunnel, "assign_ip_address(): %s ip address %d from pool\n",
+               reuse ? "Reusing" : "Allocating", best);

 
        return 1;
 }
 
 
        return 1;
 }
 

-void free_ip_address(sessionidt s)
+static void free_ip_address(sessionidt s)

 {
        int i = session[s].ip_pool_index;
 
 {
        int i = session[s].ip_pool_index;
 

+
+       CSTAT(call_free_ip_address);
+

        if (!session[s].ip)
                return; // what the?
 
        if (!session[s].ip)
                return; // what the?
 


@@ -2656,10 +2725,6 @@ void free_ip_address(sessionidt s)
        ip_address_pool[i].assigned = 0;
        ip_address_pool[i].session = 0;
        ip_address_pool[i].last = time_now;
        ip_address_pool[i].assigned = 0;
        ip_address_pool[i].session = 0;
        ip_address_pool[i].last = time_now;

-
-
-       CSTAT(call_free_ip_address);
-

 }
 
 //
 }
 
 //


@@ -2699,8 +2764,8 @@ void rebuild_address_pool(void)
                        if (ipid < 1)                   // Not found in the pool either? good.
                                continue;
 
                        if (ipid < 1)                   // Not found in the pool either? good.
                                continue;
 

-                       LOG(0, 0, i, 0, "Session %d has an IP address (%s) that was marked static, but is in the pool (%d)!\n",
-                               i, inet_toa(session[i].ip), ipid);
+                       LOG(0, i, 0, "Session %d has an IP address (%s) that was marked static, but is in the pool (%d)!\n",
+                               i, fmtaddr(session[i].ip, 0), ipid);

 
                        // Fall through and process it as part of the pool.
                }
 
                        // Fall through and process it as part of the pool.
                }


@@ -2708,7 +2773,7 @@ void rebuild_address_pool(void)
 
                if (ipid > MAXIPPOOL || ipid < 0)
                {
 
                if (ipid > MAXIPPOOL || ipid < 0)
                {

-                       LOG(0, 0, i, 0, "Session %d has a pool IP that's not found in the pool! (%d)\n", i, ipid);
+                       LOG(0, i, 0, "Session %d has a pool IP that's not found in the pool! (%d)\n", i, ipid);

                        ipid = -1;
                        session[i].ip_pool_index = ipid;
                        continue;
                        ipid = -1;
                        session[i].ip_pool_index = ipid;
                        continue;


@@ -2726,7 +2791,7 @@ void rebuild_address_pool(void)
 //
 // Fix the address pool to match a changed session.
 // (usually when the master sends us an update).
 //
 // Fix the address pool to match a changed session.
 // (usually when the master sends us an update).

-void fix_address_pool(int sid)
+static void fix_address_pool(int sid)

 {
        int ipid;
 
 {
        int ipid;
 


@@ -2747,7 +2812,7 @@ void fix_address_pool(int sid)
 //
 // Add a block of addresses to the IP pool to hand out.
 //
 //
 // Add a block of addresses to the IP pool to hand out.
 //

-void add_to_ip_pool(u32 addr, u32 mask)
+static void add_to_ip_pool(u32 addr, u32 mask)

 {
        int i;
        if (mask == 0)
 {
        int i;
        if (mask == 0)


@@ -2768,14 +2833,14 @@ void add_to_ip_pool(u32 addr, u32 mask)
                ++ip_pool_size;
                if (ip_pool_size >= MAXIPPOOL)
                {
                ++ip_pool_size;
                if (ip_pool_size >= MAXIPPOOL)
                {

-                       LOG(0,0,0,0, "Overflowed IP pool adding %s\n", inet_toa(htonl(addr)) );
+                       LOG(0, 0, 0, "Overflowed IP pool adding %s\n", fmtaddr(htonl(addr), 0));

                        return;
                }
        }
 }
 
 // Initialize the IP address pool
                        return;
                }
        }
 }
 
 // Initialize the IP address pool

-void initippool()
+static void initippool()

 {
        FILE *f;
        char *p;
 {
        FILE *f;
        char *p;


@@ -2784,7 +2849,7 @@ void initippool()
 
        if (!(f = fopen(IPPOOLFILE, "r")))
        {
 
        if (!(f = fopen(IPPOOLFILE, "r")))
        {

-               LOG(0, 0, 0, 0, "Can't load pool file " IPPOOLFILE ": %s\n", strerror(errno));
+               LOG(0, 0, 0, "Can't load pool file " IPPOOLFILE ": %s\n", strerror(errno));

                exit(1);
        }
 
                exit(1);
        }
 


@@ -2803,7 +2868,7 @@ void initippool()
                        src = inet_addr(buf);
                        if (src == INADDR_NONE)
                        {
                        src = inet_addr(buf);
                        if (src == INADDR_NONE)
                        {

-                               LOG(0, 0, 0, 0, "Invalid address pool IP %s\n", buf);
+                               LOG(0, 0, 0, "Invalid address pool IP %s\n", buf);

                                exit(1);
                        }
                        // This entry is for a specific IP only
                                exit(1);
                        }
                        // This entry is for a specific IP only


@@ -2818,18 +2883,20 @@ void initippool()
                        int numbits = 0;
                        u32 start = 0, mask = 0;
 
                        int numbits = 0;
                        u32 start = 0, mask = 0;
 

-                       LOG(2, 0, 0, 0, "Adding IP address range %s\n", buf);
+                       LOG(2, 0, 0, "Adding IP address range %s\n", buf);

                        *p++ = 0;
                        if (!*p || !(numbits = atoi(p)))
                        {
                        *p++ = 0;
                        if (!*p || !(numbits = atoi(p)))
                        {

-                               LOG(0, 0, 0, 0, "Invalid pool range %s\n", buf);
+                               LOG(0, 0, 0, "Invalid pool range %s\n", buf);

                                continue;
                        }
                        start = ntohl(inet_addr(pool));
                        mask = (u32)(pow(2, numbits) - 1) << (32 - numbits);
 
                        // Add a static route for this pool
                                continue;
                        }
                        start = ntohl(inet_addr(pool));
                        mask = (u32)(pow(2, numbits) - 1) << (32 - numbits);
 
                        // Add a static route for this pool

-                       LOG(5, 0, 0, 0, "Adding route for address pool %s/%u\n", inet_toa(htonl(start)), 32 + mask);
+                       LOG(5, 0, 0, "Adding route for address pool %s/%u\n",
+                               fmtaddr(htonl(start), 0), 32 + mask);
+

                        routeset(0, start, mask, 0, 1);
 
                        add_to_ip_pool(start, mask);
                        routeset(0, start, mask, 0, 1);
 
                        add_to_ip_pool(start, mask);


@@ -2841,7 +2908,7 @@ void initippool()
                }
        }
        fclose(f);
                }
        }
        fclose(f);

-       LOG(1, 0, 0, 0, "IP address pool is %d addresses\n", ip_pool_size - 1);
+       LOG(1, 0, 0, "IP address pool is %d addresses\n", ip_pool_size - 1);

 }
 
 void snoop_send_packet(char *packet, u16 size, ipt destination, u16 port)
 }
 
 void snoop_send_packet(char *packet, u16 size, ipt destination, u16 port)


@@ -2854,14 +2921,17 @@ void snoop_send_packet(char *packet, u16 size, ipt destination, u16 port)
        snoop_addr.sin_addr.s_addr = destination;
        snoop_addr.sin_port = ntohs(port);
 
        snoop_addr.sin_addr.s_addr = destination;
        snoop_addr.sin_port = ntohs(port);
 

-       LOG(5, 0, 0, 0, "Snooping packet at %p (%d bytes) to %s:%d\n",
-                       packet, size, inet_toa(snoop_addr.sin_addr.s_addr), htons(snoop_addr.sin_port));
+       LOG(5, 0, 0, "Snooping packet at %p (%d bytes) to %s:%d\n",
+               packet, size, fmtaddr(snoop_addr.sin_addr.s_addr, 0),
+               htons(snoop_addr.sin_port));
+

        if (sendto(snoopfd, packet, size, MSG_DONTWAIT | MSG_NOSIGNAL, (void *) &snoop_addr, sizeof(snoop_addr)) < 0)
        if (sendto(snoopfd, packet, size, MSG_DONTWAIT | MSG_NOSIGNAL, (void *) &snoop_addr, sizeof(snoop_addr)) < 0)

-               LOG(0, 0, 0, 0, "Error sending intercept packet: %s\n", strerror(errno));
+               LOG(0, 0, 0, "Error sending intercept packet: %s\n", strerror(errno));
+

        STAT(packets_snooped);
 }
 
        STAT(packets_snooped);
 }
 

-void dump_acct_info()
+static void dump_acct_info()

 {
        char filename[1024];
        char timestr[64];
 {
        char filename[1024];
        char timestr[64];


@@ -2884,10 +2954,10 @@ void dump_acct_info()
                        time_t now = time(NULL);
                        if (!(f = fopen(filename, "w")))
                        {
                        time_t now = time(NULL);
                        if (!(f = fopen(filename, "w")))
                        {

-                               LOG(0, 0, 0, 0, "Can't write accounting info to %s: %s\n", filename, strerror(errno));
+                               LOG(0, 0, 0, "Can't write accounting info to %s: %s\n", filename, strerror(errno));

                                return ;
                        }
                                return ;
                        }

-                       LOG(3, 0, 0, 0, "Dumping accounting information to %s\n", filename);
+                       LOG(3, 0, 0, "Dumping accounting information to %s\n", filename);

                        fprintf(f, "# dslwatch.pl dump file V1.01\n"
                                "# host: %s\n"
                                "# time: %ld\n"
                        fprintf(f, "# dslwatch.pl dump file V1.01\n"
                                "# host: %s\n"
                                "# time: %ld\n"


@@ -2898,10 +2968,10 @@ void dump_acct_info()
                                now - basetime);
                }
 
                                now - basetime);
                }
 

-               LOG(4, 0, 0, 0, "Dumping accounting information for %s\n", session[i].user);
+               LOG(4, 0, 0, "Dumping accounting information for %s\n", session[i].user);

                fprintf(f, "%s %s %d %u %u\n",
                        session[i].user,                                                // username
                fprintf(f, "%s %s %d %u %u\n",
                        session[i].user,                                                // username

-                       inet_toa(htonl(session[i].ip)),                                 // ip
+                       fmtaddr(htonl(session[i].ip), 0),                               // ip

                        (session[i].throttle_in || session[i].throttle_out) ? 2 : 1,    // qos
                        (u32)session[i].cin,                                            // uptxoctets
                        (u32)session[i].cout);                                          // downrxoctets
                        (session[i].throttle_in || session[i].throttle_out) ? 2 : 1,    // qos
                        (u32)session[i].cin,                                            // uptxoctets
                        (u32)session[i].cout);                                          // downrxoctets


@@ -2921,8 +2991,6 @@ int main(int argc, char *argv[])
        int optdebug = 0;
        char *optconfig = CONFIGFILE;
 
        int optdebug = 0;
        char *optconfig = CONFIGFILE;
 

-       _program_name = strdup(argv[0]);
-

        time(&basetime);             // start clock
 
        // scan args
        time(&basetime);             // start clock
 
        // scan args


@@ -2930,32 +2998,31 @@ int main(int argc, char *argv[])
        {
                switch (i)
                {
        {
                switch (i)
                {

-                       case 'd':
-                               if (fork()) exit(0);
-                               setsid();
-                               freopen("/dev/null", "r", stdin);
-                               freopen("/dev/null", "w", stdout);
-                               freopen("/dev/null", "w", stderr);
-                               break;
-                       case 'v':
-                               optdebug++;
-                               break;
-                       case 'c':
-                               optconfig = optarg;
-                               break;
-                       case 'h':
-                               snprintf(hostname, sizeof(hostname), "%s", optarg);
-                               break;
-                       default:
-                               printf("Args are:\n"
-                                      "\t-d\tDetach from terminal\n"
-                                      "\t-c <file>\tConfig file\n"
-                                      "\t-h <hostname>\tForce hostname\n"
-                                      "\t-a <address>\tUse specific address\n"
-                                      "\t-v\t\tDebug\n");
-
-                               return (0);
-                               break;
+               case 'd':
+                       if (fork()) exit(0);
+                       setsid();
+                       freopen("/dev/null", "r", stdin);
+                       freopen("/dev/null", "w", stdout);
+                       freopen("/dev/null", "w", stderr);
+                       break;
+               case 'v':
+                       optdebug++;
+                       break;
+               case 'c':
+                       optconfig = optarg;
+                       break;
+               case 'h':
+                       snprintf(hostname, sizeof(hostname), "%s", optarg);
+                       break;
+               default:
+                       printf("Args are:\n"
+                              "\t-d\t\tDetach from terminal\n"
+                              "\t-c <file>\tConfig file\n"
+                              "\t-h <hostname>\tForce hostname\n"
+                              "\t-v\t\tDebug\n");
+
+                       return (0);
+                       break;

                }
        }
 
                }
        }
 


@@ -2972,16 +3039,17 @@ int main(int argc, char *argv[])
        read_config_file();
        init_tbf(config->num_tbfs);
 
        read_config_file();
        init_tbf(config->num_tbfs);
 

-       LOG(0, 0, 0, 0, "L2TPNS version " VERSION "\n");
-       LOG(0, 0, 0, 0, "Copyright (c) 2003, 2004 Optus Internet Engineering\n");
-       LOG(0, 0, 0, 0, "Copyright (c) 2002 FireBrick (Andrews & Arnold Ltd / Watchfront Ltd) - GPL licenced\n");
+       LOG(0, 0, 0, "L2TPNS version " VERSION "\n");
+       LOG(0, 0, 0, "Copyright (c) 2003, 2004 Optus Internet Engineering\n");
+       LOG(0, 0, 0, "Copyright (c) 2002 FireBrick (Andrews & Arnold Ltd / Watchfront Ltd) - GPL licenced\n");

        {
                struct rlimit rlim;
                rlim.rlim_cur = RLIM_INFINITY;
                rlim.rlim_max = RLIM_INFINITY;
                // Remove the maximum core size
                if (setrlimit(RLIMIT_CORE, &rlim) < 0)
        {
                struct rlimit rlim;
                rlim.rlim_cur = RLIM_INFINITY;
                rlim.rlim_max = RLIM_INFINITY;
                // Remove the maximum core size
                if (setrlimit(RLIMIT_CORE, &rlim) < 0)

-                       LOG(0, 0, 0, 0, "Can't set ulimit: %s\n", strerror(errno));
+                       LOG(0, 0, 0, "Can't set ulimit: %s\n", strerror(errno));
+

                // Make core dumps go to /tmp
                chdir("/tmp");
        }
                // Make core dumps go to /tmp
                chdir("/tmp");
        }


@@ -2994,25 +3062,25 @@ int main(int argc, char *argv[])
 
                if (get_nprocs() < 2)
                {
 
                if (get_nprocs() < 2)
                {

-                       LOG(0, 0, 0, 0, "Not using FIFO scheduler, there is only 1 processor in the system.\n");
+                       LOG(0, 0, 0, "Not using FIFO scheduler, there is only 1 processor in the system.\n");

                        config->scheduler_fifo = 0;
                }
                else
                {
                        if ((ret = sched_setscheduler(0, SCHED_FIFO, &params)) == 0)
                        {
                        config->scheduler_fifo = 0;
                }
                else
                {
                        if ((ret = sched_setscheduler(0, SCHED_FIFO, &params)) == 0)
                        {

-                               LOG(1, 0, 0, 0, "Using FIFO scheduler. Say goodbye to any other processes running\n");
+                               LOG(1, 0, 0, "Using FIFO scheduler. Say goodbye to any other processes running\n");

                        }
                        else
                        {
                        }
                        else
                        {

-                               LOG(0, 0, 0, 0, "Error setting scheduler to FIFO: %s\n", strerror(errno));
+                               LOG(0, 0, 0, "Error setting scheduler to FIFO: %s\n", strerror(errno));

                                config->scheduler_fifo = 0;
                        }
                }
        }
 
        /* Set up the cluster communications port. */
                                config->scheduler_fifo = 0;
                        }
                }
        }
 
        /* Set up the cluster communications port. */

-       if (cluster_init(config->bind_address) < 0)
+       if (cluster_init() < 0)

                exit(1);
 
 #ifdef BGP
                exit(1);
 
 #ifdef BGP


@@ -3029,7 +3097,7 @@ int main(int argc, char *argv[])
 #endif /* BGP */
 
        inittun();
 #endif /* BGP */
 
        inittun();

-       LOG(1, 0, 0, 0, "Set up on interface %s\n", config->tundevice);
+       LOG(1, 0, 0, "Set up on interface %s\n", config->tundevice);

 
        initudp();
        initrad();
 
        initudp();
        initrad();


@@ -3047,9 +3115,9 @@ int main(int argc, char *argv[])
        if (config->lock_pages)
        {
                if (!mlockall(MCL_CURRENT))
        if (config->lock_pages)
        {
                if (!mlockall(MCL_CURRENT))

-                       LOG(1, 0, 0, 0, "Locking pages into memory\n");
+                       LOG(1, 0, 0, "Locking pages into memory\n");

                else
                else

-                       LOG(0, 0, 0, 0, "Can't lock pages: %s\n", strerror(errno));
+                       LOG(0, 0, 0, "Can't lock pages: %s\n", strerror(errno));

        }
 
        alarm(1);
        }
 
        alarm(1);


@@ -3081,7 +3149,7 @@ int main(int argc, char *argv[])
        return 0;
 }
 
        return 0;
 }
 

-void sighup_handler(int junk)
+static void sighup_handler(int sig)

 {
        if (log_stream && log_stream != stderr)
        {
 {
        if (log_stream && log_stream != stderr)
        {


@@ -3092,7 +3160,7 @@ void sighup_handler(int junk)
        read_config_file();
 }
 
        read_config_file();
 }
 

-void sigalrm_handler(int junk)
+static void sigalrm_handler(int sig)

 {
        // Log current traffic stats
 
 {
        // Log current traffic stats
 


@@ -3125,20 +3193,20 @@ void sigalrm_handler(int junk)
 
 }
 
 
 }
 

-void sigterm_handler(int junk)
+static void sigterm_handler(int sig)

 {
 {

-       LOG(1, 0, 0, 0, "Shutting down cleanly\n");
+       LOG(1, 0, 0, "Shutting down cleanly\n");

        if (config->save_state)
                dump_state();
 
        main_quit++;
 }
 
        if (config->save_state)
                dump_state();
 
        main_quit++;
 }
 

-void sigquit_handler(int junk)
+static void sigquit_handler(int sig)

 {
        int i;
 
 {
        int i;
 

-       LOG(1, 0, 0, 0, "Shutting down without saving sessions\n");
+       LOG(1, 0, 0, "Shutting down without saving sessions\n");

        for (i = 1; i < MAXSESSION; i++)
        {
                if (session[i].opened)
        for (i = 1; i < MAXSESSION; i++)
        {
                if (session[i].opened)


@@ -3153,13 +3221,13 @@ void sigquit_handler(int junk)
        main_quit++;
 }
 
        main_quit++;
 }
 

-void sigchild_handler(int signal)
+static void sigchild_handler(int sig)

 {
        while (waitpid(-1, NULL, WNOHANG) > 0)
            ;
 }
 
 {
        while (waitpid(-1, NULL, WNOHANG) > 0)
            ;
 }
 

-void read_state()
+static void read_state()

 {
        struct stat sb;
        int i;
 {
        struct stat sb;
        int i;


@@ -3182,7 +3250,7 @@ void read_state()
 
        if (sb.st_mtime < (time(NULL) - 60))
        {
 
        if (sb.st_mtime < (time(NULL) - 60))
        {

-               LOG(0, 0, 0, 0, "State file is too old to read, ignoring\n");
+               LOG(0, 0, 0, "State file is too old to read, ignoring\n");

                unlink(STATEFILE);
                return ;
        }
                unlink(STATEFILE);
                return ;
        }


@@ -3192,41 +3260,41 @@ void read_state()
 
        if (!f)
        {
 
        if (!f)
        {

-               LOG(0, 0, 0, 0, "Can't read state file: %s\n", strerror(errno));
+               LOG(0, 0, 0, "Can't read state file: %s\n", strerror(errno));

                exit(1);
        }
 
        if (fread(magic, sizeof(magic), 1, f) != 1 || strncmp(magic, DUMP_MAGIC, sizeof(magic)))
        {
                exit(1);
        }
 
        if (fread(magic, sizeof(magic), 1, f) != 1 || strncmp(magic, DUMP_MAGIC, sizeof(magic)))
        {

-               LOG(0, 0, 0, 0, "Bad state file magic\n");
+               LOG(0, 0, 0, "Bad state file magic\n");

                exit(1);
        }
 
                exit(1);
        }
 

-       LOG(1, 0, 0, 0, "Reading state information\n");
+       LOG(1, 0, 0, "Reading state information\n");

        if (fread(buf, sizeof(buf), 1, f) != 1 || buf[0] > MAXIPPOOL || buf[1] != sizeof(ippoolt))
        {
        if (fread(buf, sizeof(buf), 1, f) != 1 || buf[0] > MAXIPPOOL || buf[1] != sizeof(ippoolt))
        {

-               LOG(0, 0, 0, 0, "Error/mismatch reading ip pool header from state file\n");
+               LOG(0, 0, 0, "Error/mismatch reading ip pool header from state file\n");

                exit(1);
        }
 
        if (buf[0] > ip_pool_size)
        {
                exit(1);
        }
 
        if (buf[0] > ip_pool_size)
        {

-               LOG(0, 0, 0, 0, "ip pool has shrunk!  state = %d, current = %d\n", buf[0], ip_pool_size);
+               LOG(0, 0, 0, "ip pool has shrunk!  state = %d, current = %d\n", buf[0], ip_pool_size);

                exit(1);
        }
 
                exit(1);
        }
 

-       LOG(2, 0, 0, 0, "Loading %u ip addresses\n", buf[0]);
+       LOG(2, 0, 0, "Loading %u ip addresses\n", buf[0]);

        for (i = 0; i < buf[0]; i++)
        {
                if (fread(&itmp, sizeof(itmp), 1, f) != 1)
                {
        for (i = 0; i < buf[0]; i++)
        {
                if (fread(&itmp, sizeof(itmp), 1, f) != 1)
                {

-                       LOG(0, 0, 0, 0, "Error reading ip %d from state file: %s\n", i, strerror(errno));
+                       LOG(0, 0, 0, "Error reading ip %d from state file: %s\n", i, strerror(errno));

                        exit(1);
                }
 
                if (itmp.address != ip_address_pool[i].address)
                {
                        exit(1);
                }
 
                if (itmp.address != ip_address_pool[i].address)
                {

-                       LOG(0, 0, 0, 0, "Mismatched ip %d from state file: pool may only be extended\n", i);
+                       LOG(0, 0, 0, "Mismatched ip %d from state file: pool may only be extended\n", i);

                        exit(1);
                }
 
                        exit(1);
                }
 


@@ -3235,14 +3303,14 @@ void read_state()
 
        if (fread(buf, sizeof(buf), 1, f) != 1 || buf[0] != MAXTUNNEL || buf[1] != sizeof(tunnelt))
        {
 
        if (fread(buf, sizeof(buf), 1, f) != 1 || buf[0] != MAXTUNNEL || buf[1] != sizeof(tunnelt))
        {

-               LOG(0, 0, 0, 0, "Error/mismatch reading tunnel header from state file\n");
+               LOG(0, 0, 0, "Error/mismatch reading tunnel header from state file\n");

                exit(1);
        }
 
                exit(1);
        }
 

-       LOG(2, 0, 0, 0, "Loading %u tunnels\n", MAXTUNNEL);
+       LOG(2, 0, 0, "Loading %u tunnels\n", MAXTUNNEL);

        if (fread(tunnel, sizeof(tunnelt), MAXTUNNEL, f) != MAXTUNNEL)
        {
        if (fread(tunnel, sizeof(tunnelt), MAXTUNNEL, f) != MAXTUNNEL)
        {

-               LOG(0, 0, 0, 0, "Error reading tunnel data from state file\n");
+               LOG(0, 0, 0, "Error reading tunnel data from state file\n");

                exit(1);
        }
 
                exit(1);
        }
 


@@ -3252,19 +3320,19 @@ void read_state()
                tunnel[i].controls = NULL;
                tunnel[i].controle = NULL;
                if (*tunnel[i].hostname)
                tunnel[i].controls = NULL;
                tunnel[i].controle = NULL;
                if (*tunnel[i].hostname)

-                       LOG(3, 0, 0, 0, "Created tunnel for %s\n", tunnel[i].hostname);
+                       LOG(3, 0, 0, "Created tunnel for %s\n", tunnel[i].hostname);

        }
 
        if (fread(buf, sizeof(buf), 1, f) != 1 || buf[0] != MAXSESSION || buf[1] != sizeof(sessiont))
        {
        }
 
        if (fread(buf, sizeof(buf), 1, f) != 1 || buf[0] != MAXSESSION || buf[1] != sizeof(sessiont))
        {

-               LOG(0, 0, 0, 0, "Error/mismatch reading session header from state file\n");
+               LOG(0, 0, 0, "Error/mismatch reading session header from state file\n");

                exit(1);
        }
 
                exit(1);
        }
 

-       LOG(2, 0, 0, 0, "Loading %u sessions\n", MAXSESSION);
+       LOG(2, 0, 0, "Loading %u sessions\n", MAXSESSION);

        if (fread(session, sizeof(sessiont), MAXSESSION, f) != MAXSESSION)
        {
        if (fread(session, sizeof(sessiont), MAXSESSION, f) != MAXSESSION)
        {

-               LOG(0, 0, 0, 0, "Error reading session data from state file\n");
+               LOG(0, 0, 0, "Error reading session data from state file\n");

                exit(1);
        }
 
                exit(1);
        }
 


@@ -3274,17 +3342,17 @@ void read_state()
                session[i].tbf_out = 0;
                if (session[i].opened)
                {
                session[i].tbf_out = 0;
                if (session[i].opened)
                {

-                       LOG(2, 0, i, 0, "Loaded active session for user %s\n", session[i].user);
+                       LOG(2, i, 0, "Loaded active session for user %s\n", session[i].user);

                        if (session[i].ip)
                                sessionsetup(session[i].tunnel, i);
                }
        }
 
        fclose(f);
                        if (session[i].ip)
                                sessionsetup(session[i].tunnel, i);
                }
        }
 
        fclose(f);

-       LOG(0, 0, 0, 0, "Loaded saved state information\n");
+       LOG(0, 0, 0, "Loaded saved state information\n");

 }
 
 }
 

-void dump_state()
+static void dump_state()

 {
        FILE *f;
        u32 buf[2];
 {
        FILE *f;
        u32 buf[2];


@@ -3297,12 +3365,12 @@ void dump_state()
                if (!(f = fopen(STATEFILE, "w")))
                        break;
 
                if (!(f = fopen(STATEFILE, "w")))
                        break;
 

-               LOG(1, 0, 0, 0, "Dumping state information\n");
+               LOG(1, 0, 0, "Dumping state information\n");

 
                if (fwrite(DUMP_MAGIC, sizeof(DUMP_MAGIC) - 1, 1, f) != 1)
                        break;
 
 
                if (fwrite(DUMP_MAGIC, sizeof(DUMP_MAGIC) - 1, 1, f) != 1)
                        break;
 

-               LOG(2, 0, 0, 0, "Dumping %u ip addresses\n", ip_pool_size);
+               LOG(2, 0, 0, "Dumping %u ip addresses\n", ip_pool_size);

                buf[0] = ip_pool_size;
                buf[1] = sizeof(ippoolt);
                if (fwrite(buf, sizeof(buf), 1, f) != 1)
                buf[0] = ip_pool_size;
                buf[1] = sizeof(ippoolt);
                if (fwrite(buf, sizeof(buf), 1, f) != 1)


@@ -3310,7 +3378,7 @@ void dump_state()
                if (fwrite(ip_address_pool, sizeof(ippoolt), ip_pool_size, f) != ip_pool_size)
                        break;
 
                if (fwrite(ip_address_pool, sizeof(ippoolt), ip_pool_size, f) != ip_pool_size)
                        break;
 

-               LOG(2, 0, 0, 0, "Dumping %u tunnels\n", MAXTUNNEL);
+               LOG(2, 0, 0, "Dumping %u tunnels\n", MAXTUNNEL);

                buf[0] = MAXTUNNEL;
                buf[1] = sizeof(tunnelt);
                if (fwrite(buf, sizeof(buf), 1, f) != 1)
                buf[0] = MAXTUNNEL;
                buf[1] = sizeof(tunnelt);
                if (fwrite(buf, sizeof(buf), 1, f) != 1)


@@ -3318,7 +3386,7 @@ void dump_state()
                if (fwrite(tunnel, sizeof(tunnelt), MAXTUNNEL, f) != MAXTUNNEL)
                        break;
 
                if (fwrite(tunnel, sizeof(tunnelt), MAXTUNNEL, f) != MAXTUNNEL)
                        break;
 

-               LOG(2, 0, 0, 0, "Dumping %u sessions\n", MAXSESSION);
+               LOG(2, 0, 0, "Dumping %u sessions\n", MAXSESSION);

                buf[0] = MAXSESSION;
                buf[1] = sizeof(sessiont);
                if (fwrite(buf, sizeof(buf), 1, f) != 1)
                buf[0] = MAXSESSION;
                buf[1] = sizeof(sessiont);
                if (fwrite(buf, sizeof(buf), 1, f) != 1)


@@ -3331,22 +3399,22 @@ void dump_state()
        }
        while (0);
 
        }
        while (0);
 

-       LOG(0, 0, 0, 0, "Can't write state information: %s\n", strerror(errno));
+       LOG(0, 0, 0, "Can't write state information: %s\n", strerror(errno));

        unlink(STATEFILE);
 }
 
        unlink(STATEFILE);
 }
 

-void build_chap_response(char *challenge, u8 id, u16 challenge_length, char **challenge_response)
+static void build_chap_response(char *challenge, u8 id, u16 challenge_length, char **challenge_response)

 {
        MD5_CTX ctx;
        *challenge_response = NULL;
 
        if (!*config->l2tpsecret)
        {
 {
        MD5_CTX ctx;
        *challenge_response = NULL;
 
        if (!*config->l2tpsecret)
        {

-               LOG(0, 0, 0, 0, "LNS requested CHAP authentication, but no l2tp secret is defined\n");
+               LOG(0, 0, 0, "LNS requested CHAP authentication, but no l2tp secret is defined\n");

                return;
        }
 
                return;
        }
 

-       LOG(4, 0, 0, 0, "   Building challenge response for CHAP request\n");
+       LOG(4, 0, 0, "   Building challenge response for CHAP request\n");

 
        *challenge_response = (char *)calloc(17, 1);
 
 
        *challenge_response = (char *)calloc(17, 1);
 


@@ -3370,7 +3438,7 @@ static int facility_value(char *name)
        return 0;
 }
 
        return 0;
 }
 

-void update_config()
+static void update_config()

 {
        int i;
        static int timeout = 0;
 {
        int i;
        static int timeout = 0;


@@ -3436,9 +3504,7 @@ void update_config()
                }
 
        if (!config->numradiusservers)
                }
 
        if (!config->numradiusservers)

-       {
-               LOG(0, 0, 0, 0, "No RADIUS servers defined!\n");
-       }
+               LOG(0, 0, 0, "No RADIUS servers defined!\n");

 
        config->num_radfds = 2 << RADIUS_SHIFT;
 
 
        config->num_radfds = 2 << RADIUS_SHIFT;
 


@@ -3480,7 +3546,7 @@ void update_config()
 
                if (config->cluster_hb_timeout < t)
                {
 
                if (config->cluster_hb_timeout < t)
                {

-                       LOG(0,0,0,0, "Heartbeat timeout %d too low, adjusting to %d\n", config->cluster_hb_timeout, t);
+                       LOG(0, 0, 0, "Heartbeat timeout %d too low, adjusting to %d\n", config->cluster_hb_timeout, t);

                        config->cluster_hb_timeout = t;
                }
 
                        config->cluster_hb_timeout = t;
                }
 


@@ -3504,14 +3570,14 @@ void update_config()
                }
                else
                {
                }
                else
                {

-                       LOG(0, 0, 0, 0, "Can't write to PID file %s: %s\n", config->pid_file, strerror(errno));
+                       LOG(0, 0, 0, "Can't write to PID file %s: %s\n", config->pid_file, strerror(errno));

                }
        }
 
        config->reload_config = 0;
 }
 
                }
        }
 
        config->reload_config = 0;
 }
 

-void read_config_file()
+static void read_config_file()

 {
        FILE *f;
 
 {
        FILE *f;
 


@@ -3522,9 +3588,9 @@ void read_config_file()
                return;
        }
 
                return;
        }
 

-       LOG(3, 0, 0, 0, "Reading config file %s\n", config->config_file);
+       LOG(3, 0, 0, "Reading config file %s\n", config->config_file);

        cli_do_file(f);
        cli_do_file(f);

-       LOG(3, 0, 0, 0, "Done reading config file\n");
+       LOG(3, 0, 0, "Done reading config file\n");

        fclose(f);
        update_config();
 }
        fclose(f);
        update_config();
 }


@@ -3539,19 +3605,19 @@ int sessionsetup(tunnelidt t, sessionidt s)
 
        CSTAT(call_sessionsetup);
 
 
        CSTAT(call_sessionsetup);
 

-       LOG(3, session[s].ip, s, t, "Doing session setup for session\n");
+       LOG(3, s, t, "Doing session setup for session\n");

 
        if (!session[s].ip || session[s].ip == 0xFFFFFFFE)
        {
                assign_ip_address(s);
                if (!session[s].ip)
                {
 
        if (!session[s].ip || session[s].ip == 0xFFFFFFFE)
        {
                assign_ip_address(s);
                if (!session[s].ip)
                {

-                       LOG(0, 0, s, t, "   No IP allocated. The IP address pool is FULL!\n");
+                       LOG(0, s, t, "   No IP allocated. The IP address pool is FULL!\n");

                        sessionshutdown(s, "No IP addresses available");
                        return 0;
                }
                        sessionshutdown(s, "No IP addresses available");
                        return 0;
                }

-               LOG(3, 0, s, t, "   No IP allocated. Assigned %s from pool\n",
-                       inet_toa(htonl(session[s].ip)));
+               LOG(3, s, t, "   No IP allocated. Assigned %s from pool\n",
+                       fmtaddr(htonl(session[s].ip), 0));

        }
 
 
        }
 
 


@@ -3573,23 +3639,35 @@ int sessionsetup(tunnelidt t, sessionidt s)
                }
        }
 
                }
        }
 

+       {
+               int routed = 0;
+

                // Add the route for this session.
                // Add the route for this session.

-               //
-               // Static IPs need to be routed. Anything else
-               // is part of the IP address pool and is already routed,
-               // it just needs to be added to the IP cache.
-       if (session[s].ip_pool_index == -1) // static ip
-               routeset(s, session[s].ip, 0, 0, 1);
-       else
-               cache_ipmap(session[s].ip, s);
+               for (r = 0; r < MAXROUTE && session[s].route[r].ip; r++)
+               {
+                       if ((session[s].ip & session[s].route[r].mask) ==
+                           (session[s].route[r].ip & session[s].route[r].mask))
+                               routed++;

 
 

-       for (r = 0; r < MAXROUTE && session[s].route[r].ip; r++)
-               routeset(s, session[s].route[r].ip, session[s].route[r].mask, session[s].ip, 1);
+                       routeset(s, session[s].route[r].ip, session[s].route[r].mask, 0, 1);
+               }
+
+               // Static IPs need to be routed if not already
+               // convered by a Framed-Route.  Anything else is part
+               // of the IP address pool and is already routed, it
+               // just needs to be added to the IP cache.
+               if (session[s].ip_pool_index == -1) // static ip
+               {
+                       if (!routed) routeset(s, session[s].ip, 0, 0, 1);
+               }
+               else
+                       cache_ipmap(session[s].ip, s);
+       }

 
        if (!session[s].unique_id)
        {
                // did this session just finish radius?
 
        if (!session[s].unique_id)
        {
                // did this session just finish radius?

-               LOG(3, session[s].ip, s, t, "Sending initial IPCP to client\n");
+               LOG(3, s, t, "Sending initial IPCP to client\n");

                sendipcp(t, s);
                session[s].unique_id = ++last_id;
        }
                sendipcp(t, s);
                session[s].unique_id = ++last_id;
        }


@@ -3606,15 +3684,9 @@ int sessionsetup(tunnelidt t, sessionidt s)
 
        session[s].last_packet = time_now;
 
 
        session[s].last_packet = time_now;
 

-       {
-               char *sessionip, *tunnelip;
-               sessionip = strdup(inet_toa(htonl(session[s].ip)));
-               tunnelip = strdup(inet_toa(htonl(tunnel[t].ip)));
-               LOG(2, session[s].ip, s, t, "Login by %s at %s from %s (%s)\n",
-                               session[s].user, sessionip, tunnelip, tunnel[t].hostname);
-               if (sessionip) free(sessionip);
-               if (tunnelip) free(tunnelip);
-       }
+       LOG(2, s, t, "Login by %s at %s from %s (%s)\n", session[s].user,
+               fmtaddr(htonl(session[s].ip), 0),
+               fmtaddr(htonl(tunnel[t].ip), 1), tunnel[t].hostname);

 
        cluster_send_session(s);        // Mark it as dirty, and needing to the flooded to the cluster.
 
 
        cluster_send_session(s);        // Mark it as dirty, and needing to the flooded to the cluster.
 


@@ -3628,12 +3700,13 @@ int sessionsetup(tunnelidt t, sessionidt s)
 int load_session(sessionidt s, sessiont *new)
 {
        int i;
 int load_session(sessionidt s, sessiont *new)
 {
        int i;

+       int newip = 0;

 
                // Sanity checks.
        if (new->ip_pool_index >= MAXIPPOOL ||
                new->tunnel >= MAXTUNNEL)
        {
 
                // Sanity checks.
        if (new->ip_pool_index >= MAXIPPOOL ||
                new->tunnel >= MAXTUNNEL)
        {

-               LOG(0,0,s,0, "Strange session update received!\n");
+               LOG(0, s, 0, "Strange session update received!\n");

                        // FIXME! What to do here?
                return 0;
        }
                        // FIXME! What to do here?
                return 0;
        }


@@ -3645,46 +3718,89 @@ int load_session(sessionidt s, sessiont *new)
 
        session[s].tunnel = new->tunnel; // For logging in cache_ipmap
 
 
        session[s].tunnel = new->tunnel; // For logging in cache_ipmap
 

+       // See if routes/ip cache need updating
+       if (new->ip != session[s].ip)
+               newip++;
+
+       for (i = 0; !newip && i < MAXROUTE && (session[s].route[i].ip || new->route[i].ip); i++)
+               if (new->route[i].ip != session[s].route[i].ip ||
+                   new->route[i].mask != session[s].route[i].mask)
+                       newip++;

 
 

-       if (new->ip != session[s].ip)   // Changed ip. fix up hash tables.
+       // needs update
+       if (newip)

        {
        {

-               if (session[s].ip)      // If there's an old one, remove it.
+               int routed = 0;
+
+               // remove old routes...
+               for (i = 0; i < MAXROUTE && session[s].route[i].ip; i++)

                {
                {

-                       // Remove any routes if the IP has changed
-                       for (i = 0; i < MAXROUTE && session[s].route[i].ip; i++)
-                       {
-                               routeset(s, session[s].route[i].ip, session[s].route[i].mask, session[s].ip, 0);
-                               session[s].route[i].ip = 0;
-                       }
+                       if ((session[s].ip & session[s].route[i].mask) ==
+                           (session[s].route[i].ip & session[s].route[i].mask))
+                               routed++;

 
 

+                       routeset(s, session[s].route[i].ip, session[s].route[i].mask, 0, 0);
+               }
+
+               // ...ip
+               if (session[s].ip)
+               {

                        if (session[s].ip_pool_index == -1) // static IP
                        if (session[s].ip_pool_index == -1) // static IP

-                               routeset(s, session[s].ip, 0, 0, 0);
+                       {
+                               if (!routed) routeset(s, session[s].ip, 0, 0, 0);
+                       }

                        else            // It's part of the IP pool, remove it manually.
                                uncache_ipmap(session[s].ip);
                }
 
                        else            // It's part of the IP pool, remove it manually.
                                uncache_ipmap(session[s].ip);
                }
 

+               routed = 0;
+
+               // add new routes...
+               for (i = 0; i < MAXROUTE && new->route[i].ip; i++)
+               {
+                       if ((new->ip & new->route[i].mask) ==
+                           (new->route[i].ip & new->route[i].mask))
+                               routed++;
+
+                       routeset(s, new->route[i].ip, new->route[i].mask, 0, 1);
+               }
+
+               // ...ip

                if (new->ip)
                {
                        // If there's a new one, add it.
                        if (new->ip_pool_index == -1)
                if (new->ip)
                {
                        // If there's a new one, add it.
                        if (new->ip_pool_index == -1)

-                               routeset(s, new->ip, 0, 0, 1);
+                       {
+                               if (!routed) routeset(s, new->ip, 0, 0, 1);
+                       }

                        else
                                cache_ipmap(new->ip, s);
                }
        }
 
                        else
                                cache_ipmap(new->ip, s);
                }
        }
 

-       // Update routed networks
-       for (i = 0; i < MAXROUTE && (session[s].route[i].ip || new->route[i].ip); i++)
+       // check filters
+       if (new->filter_in && (new->filter_in > MAXFILTER || !ip_filters[new->filter_in - 1].name[0]))

        {
        {

-               if (new->route[i].ip == session[s].route[i].ip &&
-                   new->route[i].mask == session[s].route[i].mask)
-                       continue;
+               LOG(2, s, session[s].tunnel, "Dropping invalid input filter %d\n", (int) new->filter_in);
+               new->filter_in = 0;
+       }

 
 

-               if (session[s].route[i].ip) // Remove the old one if it exists.
-                       routeset(s, session[s].route[i].ip, session[s].route[i].mask, session[s].ip, 0);
+       if (new->filter_out && (new->filter_out > MAXFILTER || !ip_filters[new->filter_out - 1].name[0]))
+       {
+               LOG(2, s, session[s].tunnel, "Dropping invalid output filter %d\n", (int) new->filter_out);
+               new->filter_out = 0;
+       }

 
 

-               if (new->route[i].ip)   // Add the new one if it exists.
-                       routeset(s, new->route[i].ip, new->route[i].mask, new->ip, 1);
+       if (new->filter_in != session[s].filter_in)
+       {
+               if (session[s].filter_in) ip_filters[session[s].filter_in - 1].used--;
+               if (new->filter_in)       ip_filters[new->filter_in - 1].used++;
+       }
+
+       if (new->filter_out != session[s].filter_out)
+       {
+               if (session[s].filter_out) ip_filters[session[s].filter_out - 1].used--;
+               if (new->filter_out)       ip_filters[new->filter_out - 1].used++;

        }
 
        if (new->tunnel && s > config->cluster_highest_sessionid)       // Maintain this in the slave. It's used
        }
 
        if (new->tunnel && s > config->cluster_highest_sessionid)       // Maintain this in the slave. It's used


@@ -3706,22 +3822,7 @@ int load_session(sessionidt s, sessiont *new)
        return 1;
 }
 
        return 1;
 }
 

-#ifdef RINGBUFFER
-void ringbuffer_dump(FILE *stream)
-{
-       int i = ringbuffer->head;
-
-       while (i != ringbuffer->tail)
-       {
-               if (*ringbuffer->buffer[i].message)
-                       fprintf(stream, "%d-%s", ringbuffer->buffer[i].level, ringbuffer->buffer[i].message);
-               if (++i == ringbuffer->tail) break;
-               if (i == RINGBUFFER_SIZE) i = 0;
-       }
-}
-#endif
-
-void initplugins()
+static void initplugins()

 {
        int i;
 
 {
        int i;
 


@@ -3736,7 +3837,7 @@ static void *open_plugin(char *plugin_name, int load)
        char path[256] = "";
 
        snprintf(path, 256, PLUGINDIR "/%s.so", plugin_name);
        char path[256] = "";
 
        snprintf(path, 256, PLUGINDIR "/%s.so", plugin_name);

-       LOG(2, 0, 0, 0, "%soading plugin from %s\n", load ? "L" : "Un-l", path);
+       LOG(2, 0, 0, "%soading plugin from %s\n", load ? "L" : "Un-l", path);

        return dlopen(path, RTLD_NOW);
 }
 
        return dlopen(path, RTLD_NOW);
 }
 


@@ -3752,30 +3853,32 @@ static void *getconfig(char *key, enum config_typet type)
                        if (config_values[i].type == type)
                                return ((void *) config) + config_values[i].offset;
 
                        if (config_values[i].type == type)
                                return ((void *) config) + config_values[i].offset;
 

-                       LOG(1, 0, 0, 0, "plugin requested config item \"%s\" expecting type %d, have type %d\n",
+                       LOG(1, 0, 0, "plugin requested config item \"%s\" expecting type %d, have type %d\n",

                                key, type, config_values[i].type);
 
                        return 0;
                }
        }
 
                                key, type, config_values[i].type);
 
                        return 0;
                }
        }
 

-       LOG(1, 0, 0, 0, "plugin requested unknown config item \"%s\"\n", key);
+       LOG(1, 0, 0, "plugin requested unknown config item \"%s\"\n", key);

        return 0;
 }
 
        return 0;
 }
 

-void add_plugin(char *plugin_name)
+static int add_plugin(char *plugin_name)

 {
        static struct pluginfuncs funcs = {
                _log,
                _log_hex,
 {
        static struct pluginfuncs funcs = {
                _log,
                _log_hex,

-               inet_toa,
+               fmtaddr,

                sessionbyuser,
                sessiontbysessionidt,
                sessionidtbysessiont,
                sessionbyuser,
                sessiontbysessionidt,
                sessionidtbysessiont,

-               sessionkill,

                radiusnew,
                radiussend,
                getconfig,
                radiusnew,
                radiussend,
                getconfig,

+               sessionkill,
+               throttle_session,
+               cluster_send_session,

        };
 
        void *p = open_plugin(plugin_name, 1);
        };
 
        void *p = open_plugin(plugin_name, 1);


@@ -3784,23 +3887,23 @@ void add_plugin(char *plugin_name)
 
        if (!p)
        {
 
        if (!p)
        {

-               LOG(1, 0, 0, 0, "   Plugin load failed: %s\n", dlerror());
-               return;
+               LOG(1, 0, 0, "   Plugin load failed: %s\n", dlerror());
+               return -1;

        }
 
        if (ll_contains(loaded_plugins, p))
        {
                dlclose(p);
        }
 
        if (ll_contains(loaded_plugins, p))
        {
                dlclose(p);

-               return;
+               return 0; // already loaded

        }
 
        {
        }
 
        {

-               int *v = dlsym(p, "__plugin_api_version");
+               int *v = dlsym(p, "plugin_api_version");

                if (!v || *v != PLUGIN_API_VERSION)
                {
                if (!v || *v != PLUGIN_API_VERSION)
                {

-                       LOG(1, 0, 0, 0, "   Plugin load failed: API version mismatch: %s\n", dlerror());
+                       LOG(1, 0, 0, "   Plugin load failed: API version mismatch: %s\n", dlerror());

                        dlclose(p);
                        dlclose(p);

-                       return;
+                       return -1;

                }
        }
 
                }
        }
 


@@ -3808,9 +3911,9 @@ void add_plugin(char *plugin_name)
        {
                if (!initfunc(&funcs))
                {
        {
                if (!initfunc(&funcs))
                {

-                       LOG(1, 0, 0, 0, "   Plugin load failed: plugin_init() returned FALSE: %s\n", dlerror());
+                       LOG(1, 0, 0, "   Plugin load failed: plugin_init() returned FALSE: %s\n", dlerror());

                        dlclose(p);
                        dlclose(p);

-                       return;
+                       return -1;

                }
        }
 
                }
        }
 


@@ -3821,12 +3924,13 @@ void add_plugin(char *plugin_name)
                void *x;
                if (plugin_functions[i] && (x = dlsym(p, plugin_functions[i])))
                {
                void *x;
                if (plugin_functions[i] && (x = dlsym(p, plugin_functions[i])))
                {

-                       LOG(3, 0, 0, 0, "   Supports function \"%s\"\n", plugin_functions[i]);
+                       LOG(3, 0, 0, "   Supports function \"%s\"\n", plugin_functions[i]);

                        ll_push(plugins[i], x);
                }
        }
 
                        ll_push(plugins[i], x);
                }
        }
 

-       LOG(2, 0, 0, 0, "   Loaded plugin %s\n", plugin_name);
+       LOG(2, 0, 0, "   Loaded plugin %s\n", plugin_name);
+       return 1;

 }
 
 static void run_plugin_done(void *plugin)
 }
 
 static void run_plugin_done(void *plugin)


@@ -3837,48 +3941,54 @@ static void run_plugin_done(void *plugin)
                donefunc();
 }
 
                donefunc();
 }
 

-void remove_plugin(char *plugin_name)
+static int remove_plugin(char *plugin_name)

 {
        void *p = open_plugin(plugin_name, 0);
 {
        void *p = open_plugin(plugin_name, 0);

-       int i;
+       int loaded = 0;

 
        if (!p)
 
        if (!p)

-               return;
-
-       for (i = 0; i < max_plugin_functions; i++)
-       {
-               void *x;
-               if (plugin_functions[i] && (x = dlsym(p, plugin_functions[i])))
-                       ll_delete(plugins[i], x);
-       }
+               return -1;

 
        if (ll_contains(loaded_plugins, p))
        {
 
        if (ll_contains(loaded_plugins, p))
        {

+               int i;
+               for (i = 0; i < max_plugin_functions; i++)
+               {
+                       void *x;
+                       if (plugin_functions[i] && (x = dlsym(p, plugin_functions[i])))
+                               ll_delete(plugins[i], x);
+               }
+

                ll_delete(loaded_plugins, p);
                run_plugin_done(p);
                ll_delete(loaded_plugins, p);
                run_plugin_done(p);

+               loaded = 1;

        }
 
        dlclose(p);
        }
 
        dlclose(p);

-       LOG(2, 0, 0, 0, "Removed plugin %s\n", plugin_name);
+       LOG(2, 0, 0, "Removed plugin %s\n", plugin_name);
+       return loaded;

 }
 
 int run_plugins(int plugin_type, void *data)
 {
        int (*func)(void *data);
 }
 
 int run_plugins(int plugin_type, void *data)
 {
        int (*func)(void *data);

-       if (!plugins[plugin_type] || plugin_type > max_plugin_functions) return 1;
+
+       if (!plugins[plugin_type] || plugin_type > max_plugin_functions)
+               return PLUGIN_RET_ERROR;

 
        ll_reset(plugins[plugin_type]);
        while ((func = ll_next(plugins[plugin_type])))
        {
 
        ll_reset(plugins[plugin_type]);
        while ((func = ll_next(plugins[plugin_type])))
        {

-               int rc;
-               rc = func(data);
-               if (rc == PLUGIN_RET_STOP) return 1;
-               if (rc == PLUGIN_RET_ERROR) return 0;
+               int r = func(data);
+
+               if (r != PLUGIN_RET_OK)
+                       return r; // stop here

        }
        }

-       return 1;
+
+       return PLUGIN_RET_OK;

 }
 
 }
 

-void plugins_done()
+static void plugins_done()

 {
        void *p;
 
 {
        void *p;
 


@@ -3887,62 +3997,192 @@ void plugins_done()
                run_plugin_done(p);
 }
 
                run_plugin_done(p);
 }
 

-void processcontrol(u8 * buf, int len, struct sockaddr_in *addr)
+static void processcontrol(u8 * buf, int len, struct sockaddr_in *addr, int alen)

 {
 {

-       char *resp;
-       int l;
-       struct param_control param = { buf, len, ntohl(addr->sin_addr.s_addr), ntohs(addr->sin_port), NULL, 0, 0 };
-
+       struct nsctl request;
+       struct nsctl response;
+       int type = unpack_control(&request, buf, len);
+       int r;
+       void *p;

 
        if (log_stream && config->debug >= 4)
        {
 
        if (log_stream && config->debug >= 4)
        {

-               LOG(4, ntohl(addr->sin_addr.s_addr), 0, 0, "Received ");
-               dump_packet(buf, log_stream);
+               if (type < 0)
+               {
+                       LOG(4, 0, 0, "Bogus control message from %s (%d)\n",
+                               fmtaddr(addr->sin_addr.s_addr, 0), type);
+               }
+               else
+               {
+                       LOG(4, 0, 0, "Received [%s] ", fmtaddr(addr->sin_addr.s_addr, 0));
+                       dump_control(&request, log_stream);
+               }

        }
 
        }
 

-       resp = calloc(1400, 1);
-       l = new_packet(PKT_RESP_ERROR, resp);
-       *(int *)(resp + 6) = *(int *)(buf + 6);
+       switch (type)
+       {
+       case NSCTL_REQ_LOAD:
+               if (request.argc != 1)
+               {
+                       response.type = NSCTL_RES_ERR;
+                       response.argc = 1;
+                       response.argv[0] = "name of plugin required";
+               }
+               else if ((r = add_plugin(request.argv[0])) < 1)
+               {
+                       response.type = NSCTL_RES_ERR;
+                       response.argc = 1;
+                       response.argv[0] = !r
+                               ? "plugin already loaded"
+                               : "error loading plugin";
+               }
+               else
+               {
+                       response.type = NSCTL_RES_OK;
+                       response.argc = 0;
+               }
+
+               break;

 
 

-       param.type = ntohs(*(short *)(buf + 2));
-       param.id = ntohl(*(int *)(buf + 6));
-       param.data_length = ntohs(*(short *)(buf + 4)) - 10;
-       param.data = (param.data_length > 0) ? (char *)(buf + 10) : NULL;
-       param.response = resp;
-       param.response_length = l;
+       case NSCTL_REQ_UNLOAD:
+               if (request.argc != 1)
+               {
+                       response.type = NSCTL_RES_ERR;
+                       response.argc = 1;
+                       response.argv[0] = "name of plugin required";
+               }
+               else if ((r = remove_plugin(request.argv[0])) < 1)
+               {
+                       response.type = NSCTL_RES_ERR;
+                       response.argc = 1;
+                       response.argv[0] = !r
+                               ? "plugin not loaded"
+                               : "plugin not found";
+               }
+               else
+               {
+                       response.type = NSCTL_RES_OK;
+                       response.argc = 0;
+               }
+
+               break;
+
+       case NSCTL_REQ_HELP:
+               response.type = NSCTL_RES_OK;
+               response.argc = 0;
+
+               ll_reset(loaded_plugins);
+               while ((p = ll_next(loaded_plugins)))
+               {
+                       char **help = dlsym(p, "plugin_control_help");
+                       while (response.argc < 0xff && help && *help)
+                               response.argv[response.argc++] = *help++;
+               }

 
 

-       run_plugins(PLUGIN_CONTROL, &param);
+               break;

 
 

-       if (param.send_response)
+       case NSCTL_REQ_CONTROL:
+               {
+                       struct param_control param = {
+                               config->cluster_iam_master,
+                               request.argc,
+                               request.argv,
+                               0,
+                               NULL,
+                       };
+
+                       int r = run_plugins(PLUGIN_CONTROL, &param);
+
+                       if (r == PLUGIN_RET_ERROR)
+                       {
+                               response.type = NSCTL_RES_ERR;
+                               response.argc = 1;
+                               response.argv[0] = param.additional
+                                       ? param.additional
+                                       : "error returned by plugin";
+                       }
+                       else if (r == PLUGIN_RET_NOTMASTER)
+                       {
+                               static char msg[] = "must be run on master: 000.000.000.000";
+
+                               response.type = NSCTL_RES_ERR;
+                               response.argc = 1;
+                               if (config->cluster_master_address)
+                               {
+                                       strcpy(msg + 23, fmtaddr(config->cluster_master_address, 0));
+                                       response.argv[0] = msg;
+                               }
+                               else
+                               {
+                                       response.argv[0] = "must be run on master: none elected";
+                               }
+                       }
+                       else if (!(param.response & NSCTL_RESPONSE))
+                       {
+                               response.type = NSCTL_RES_ERR;
+                               response.argc = 1;
+                               response.argv[0] = param.response
+                                       ? "unrecognised response value from plugin"
+                                       : "unhandled action";
+                       }
+                       else
+                       {
+                               response.type = param.response;
+                               response.argc = 0;
+                               if (param.additional)
+                               {
+                                       response.argc = 1;
+                                       response.argv[0] = param.additional;
+                               }
+                       }
+               }
+
+               break;
+
+       default:
+               response.type = NSCTL_RES_ERR;
+               response.argc = 1;
+               response.argv[0] = "error unpacking control packet";
+       }
+
+       buf = calloc(NSCTL_MAX_PKT_SZ, 1);
+       if (!buf)

        {
        {

-               send_packet(controlfd, ntohl(addr->sin_addr.s_addr), ntohs(addr->sin_port), param.response, param.response_length);
-               LOG(4, ntohl(addr->sin_addr.s_addr), 0, 0, "Sent Control packet response\n");
+               LOG(2, 0, 0, "Failed to allocate nsctl response\n");
+               return;

        }
 
        }
 

-       free(resp);
-}
+       r = pack_control(buf, NSCTL_MAX_PKT_SZ, response.type, response.argc, response.argv);
+       if (r > 0)
+       {
+               sendto(controlfd, buf, r, 0, (const struct sockaddr *) addr, alen);
+               if (log_stream && config->debug >= 4)
+               {
+                       LOG(4, 0, 0, "Sent [%s] ", fmtaddr(addr->sin_addr.s_addr, 0));
+                       dump_control(&response, log_stream);
+               }
+       }
+       else
+               LOG(2, 0, 0, "Failed to pack nsctl response for %s (%d)\n",
+                       fmtaddr(addr->sin_addr.s_addr, 0), r);

 
 

-void tunnelclear(tunnelidt t)
-{
-       if (!t) return;
-       memset(&tunnel[t], 0, sizeof(tunnel[t]));
-       tunnel[t].state = TUNNELFREE;
+       free(buf);

 }
 
 }
 

-tunnelidt new_tunnel()
+static tunnelidt new_tunnel()

 {
        tunnelidt i;
        for (i = 1; i < MAXTUNNEL; i++)
        {
                if (tunnel[i].state == TUNNELFREE)
                {
 {
        tunnelidt i;
        for (i = 1; i < MAXTUNNEL; i++)
        {
                if (tunnel[i].state == TUNNELFREE)
                {

-                       LOG(4, 0, 0, i, "Assigning tunnel ID %d\n", i);
+                       LOG(4, 0, i, "Assigning tunnel ID %d\n", i);

                        if (i > config->cluster_highest_tunnelid)
                                config->cluster_highest_tunnelid = i;
                        return i;
                }
        }
                        if (i > config->cluster_highest_tunnelid)
                                config->cluster_highest_tunnelid = i;
                        return i;
                }
        }

-       LOG(0, 0, 0, 0, "Can't find a free tunnel! There shouldn't be this many in use!\n");
+       LOG(0, 0, 0, "Can't find a free tunnel! There shouldn't be this many in use!\n");

        return 0;
 }
 
        return 0;
 }
 


@@ -3976,7 +4216,6 @@ void become_master(void)
        // add radius fds
        for (i = 0; i < config->num_radfds; i++)
        {
        // add radius fds
        for (i = 0; i < config->num_radfds; i++)
        {

-               if (!radfds[i]) continue;

                FD_SET(radfds[i], &readset);
                if (radfds[i] > readset_n)
                        readset_n = radfds[i];
                FD_SET(radfds[i], &readset);
                if (radfds[i] > readset_n)
                        readset_n = radfds[i];


@@ -4070,7 +4309,7 @@ int cmd_show_hist_open(struct cli_def *cli, char *command, char **argv, int argc
  *
  * Based on code from rp-l2tpd by Roaring Penguin Software Inc.
  */
  *
  * Based on code from rp-l2tpd by Roaring Penguin Software Inc.
  */

-int unhide_avp(u8 *avp, tunnelidt t, sessionidt s, u16 length)
+static int unhide_avp(u8 *avp, tunnelidt t, sessionidt s, u16 length)

 {
        MD5_CTX ctx;
        u8 *cursor;
 {
        MD5_CTX ctx;
        u8 *cursor;


@@ -4105,7 +4344,7 @@ int unhide_avp(u8 *avp, tunnelidt t, sessionidt s, u16 length)
 
        if (hidden_length > length - 8)
        {
 
        if (hidden_length > length - 8)
        {

-               LOG(1, 0, s, t, "Hidden length %d too long in AVP of length %d\n", (int) hidden_length, (int) length);
+               LOG(1, s, t, "Hidden length %d too long in AVP of length %d\n", (int) hidden_length, (int) length);

                return 0;
        }
 
                return 0;
        }
 


@@ -4134,3 +4373,118 @@ int unhide_avp(u8 *avp, tunnelidt t, sessionidt s, u16 length)
        return hidden_length + 6;
 }
 
        return hidden_length + 6;
 }
 

+static int ip_filter_port(ip_filter_portt *p, portt port)
+{
+       switch (p->op)
+       {
+       case FILTER_PORT_OP_EQ:    return port == p->port;
+       case FILTER_PORT_OP_NEQ:   return port != p->port;
+       case FILTER_PORT_OP_GT:    return port > p->port;
+       case FILTER_PORT_OP_LT:    return port < p->port;
+       case FILTER_PORT_OP_RANGE: return port >= p->port && port <= p->port2;
+       }
+
+       return 0;
+}
+
+static int ip_filter_flag(u8 op, u8 sflags, u8 cflags, u8 flags)
+{
+       switch (op)
+       {
+       case FILTER_FLAG_OP_ANY:
+               return (flags & sflags) || (~flags & cflags);
+
+       case FILTER_FLAG_OP_ALL:
+               return (flags & sflags) == sflags && (~flags & cflags) == cflags;
+
+       case FILTER_FLAG_OP_EST:
+               return (flags & (TCP_FLAG_ACK|TCP_FLAG_RST)) && (~flags & TCP_FLAG_SYN);
+       }
+
+       return 0;
+}
+
+int ip_filter(u8 *buf, int len, u8 filter)
+{
+       u16 frag_offset;
+       u8 proto;
+       ipt src_ip;
+       ipt dst_ip;
+       portt src_port = 0;
+       portt dst_port = 0;
+       u8 flags = 0;
+       ip_filter_rulet *rule;
+
+       if (len < 20) // up to end of destination address
+               return 0;
+
+       if ((*buf >> 4) != 4) // IPv4
+               return 0;
+
+       frag_offset = ntohs(*(u16 *) (buf + 6)) & 0x1fff;
+       proto = buf[9];
+       src_ip = *(u32 *) (buf + 12);
+       dst_ip = *(u32 *) (buf + 16);
+
+       if (frag_offset == 0 && (proto == IPPROTO_TCP || proto == IPPROTO_UDP))
+       {
+               int l = (buf[0] & 0xf) * 4; // length of IP header
+               if (len < l + 4) // ports
+                       return 0;
+
+               src_port = ntohs(*(u16 *) (buf + l));
+               dst_port = ntohs(*(u16 *) (buf + l + 2));
+               if (proto == IPPROTO_TCP)
+               {
+                       if (len < l + 14) // flags
+                               return 0;
+
+                       flags = buf[l + 13] & 0x3f;
+               }
+       }
+
+       for (rule = ip_filters[filter].rules; rule->action; rule++)
+       {
+               if (rule->proto != IPPROTO_IP && proto != rule->proto)
+                       continue;
+
+               if (rule->src_wild != INADDR_BROADCAST &&
+                   (src_ip & ~rule->src_wild) != (rule->src_ip & ~rule->src_wild))
+                       continue;
+
+               if (rule->dst_wild != INADDR_BROADCAST &&
+                   (dst_ip & ~rule->dst_wild) != (rule->dst_ip & ~rule->dst_wild))
+                       continue;
+
+               if (frag_offset)
+               {
+                       if (!rule->frag || rule->action == FILTER_ACTION_DENY)
+                               continue;
+               }
+               else
+               {
+                       if (rule->frag)
+                               continue;
+
+                       if (proto == IPPROTO_TCP || proto == IPPROTO_UDP)
+                       {
+                               if (rule->src_ports.op && !ip_filter_port(&rule->src_ports, src_port))
+                                       continue;
+
+                               if (rule->dst_ports.op && !ip_filter_port(&rule->dst_ports, dst_port))
+                                       continue;
+
+                               if (proto == IPPROTO_TCP && rule->tcp_flag_op &&
+                                   !ip_filter_flag(rule->tcp_flag_op, rule->tcp_sflags, rule->tcp_cflags, flags))
+                                       continue;
+                       }
+               }
+
+               // matched
+               rule->counter++;
+               return rule->action == FILTER_ACTION_PERMIT;
+       }
+
+       // default deny
+       return 0;
+}