restart BGP on receipt of CEASE

[l2tpns.git] / garden.c

diff --git a/garden.c b/garden.c
index ba228cd..07f1f41 100644 (file)
--- a/garden.c
+++ b/garden.c
@@ -9,7 +9,7 @@
 
 /* walled garden */
 
 
 /* walled garden */
 

-char const *cvs_id = "$Id: garden.c,v 1.13 2004-11-17 08:23:34 bodea Exp $";
+char const *cvs_id = "$Id: garden.c,v 1.23 2005-06-02 11:32:30 bodea Exp $";

 
 int plugin_api_version = PLUGIN_API_VERSION;
 static struct pluginfuncs *p = 0;
 
 int plugin_api_version = PLUGIN_API_VERSION;
 static struct pluginfuncs *p = 0;


@@ -23,7 +23,7 @@ char *up_commands[] = {
        "iptables -t nat -N garden_users >/dev/null 2>&1",              // Empty chain, users added/removed by garden_session
        "iptables -t nat -F garden_users",
        "iptables -t nat -A PREROUTING -j garden_users",                // DNAT any users on the garden_users chain
        "iptables -t nat -N garden_users >/dev/null 2>&1",              // Empty chain, users added/removed by garden_session
        "iptables -t nat -F garden_users",
        "iptables -t nat -A PREROUTING -j garden_users",                // DNAT any users on the garden_users chain

-       "sysctl -w net.ipv4.ip_conntrack_max=256000 >/dev/null",        // lots of entries
+       "sysctl -w net.ipv4.ip_conntrack_max=512000 >/dev/null",        // lots of entries

        NULL,
 };
 
        NULL,
 };
 


@@ -40,14 +40,18 @@ char *down_commands[] = {
        NULL,
 };
 
        NULL,
 };
 

-int garden_session(sessiont *s, int flag);
+#define F_UNGARDEN     0
+#define F_GARDEN       1
+#define F_CLEANUP      2
+
+int garden_session(sessiont *s, int flag, char *newuser);

 
 int plugin_post_auth(struct param_post_auth *data)
 {
        // Ignore if user authentication was successful
        if (data->auth_allowed) return PLUGIN_RET_OK;
 
 
 int plugin_post_auth(struct param_post_auth *data)
 {
        // Ignore if user authentication was successful
        if (data->auth_allowed) return PLUGIN_RET_OK;
 

-       p->log(3, 0, 0, 0, "Walled Garden allowing login\n");
+       p->log(3, p->get_id_by_session(data->s), data->s->tunnel, "Walled Garden allowing login\n");

        data->auth_allowed = 1;
        data->s->walled_garden = 1;
        return PLUGIN_RET_OK;
        data->auth_allowed = 1;
        data->s->walled_garden = 1;
        return PLUGIN_RET_OK;


@@ -59,7 +63,7 @@ int plugin_new_session(struct param_new_session *data)
                return PLUGIN_RET_OK;   // Slaves don't do walled garden processing.
 
        if (data->s->walled_garden)
                return PLUGIN_RET_OK;   // Slaves don't do walled garden processing.
 
        if (data->s->walled_garden)

-               garden_session(data->s, 1);
+               garden_session(data->s, F_GARDEN, 0);

 
        return PLUGIN_RET_OK;
 }
 
        return PLUGIN_RET_OK;
 }


@@ -70,14 +74,14 @@ int plugin_kill_session(struct param_new_session *data)
                return PLUGIN_RET_OK;   // Slaves don't do walled garden processing.
 
        if (data->s->walled_garden)
                return PLUGIN_RET_OK;   // Slaves don't do walled garden processing.
 
        if (data->s->walled_garden)

-               garden_session(data->s, 0);
+               garden_session(data->s, F_CLEANUP, 0);

 
        return PLUGIN_RET_OK;
 }
 
 char *plugin_control_help[] = {
 
        return PLUGIN_RET_OK;
 }
 
 char *plugin_control_help[] = {

-       "  garden USER|SID       Put user into the walled garden",
-       "  ungarden USER|SID     Release user",
+       "  garden USER|SID                             Put user into the walled garden",
+       "  ungarden SID [USER]                         Release session from garden",

        0
 };
 
        0
 };
 


@@ -88,28 +92,35 @@ int plugin_control(struct param_control *data)
        int flag;
        char *end;
 
        int flag;
        char *end;
 

-       if (data->argc < 1 || (strcmp(data->argv[0], "garden") && strcmp(data->argv[0], "ungarden")))
+       if (data->argc < 1)
+               return PLUGIN_RET_OK;
+
+       if (strcmp(data->argv[0], "garden") && strcmp(data->argv[0], "ungarden"))

                return PLUGIN_RET_OK; // not for us
 
                return PLUGIN_RET_OK; // not for us
 

-       flag = data->argv[0][0] == 'g';
+       if (!iam_master)
+               return PLUGIN_RET_NOTMASTER;

 
 

-       if (!iam_master)        // All garden processing happens on the master.
+       flag = data->argv[0][0] == 'g' ? F_GARDEN : F_UNGARDEN;
+
+       if (data->argc < 2 || data->argc > 3 || (data->argc > 2 && flag == F_GARDEN))

        {
                data->response = NSCTL_RES_ERR;
        {
                data->response = NSCTL_RES_ERR;

-               data->additional = "must be run on the cluster master";
+               data->additional = flag == F_GARDEN
+                   ? "requires username or session id"
+                   : "requires session id and optional username";
+

                return PLUGIN_RET_STOP;
        }
 
                return PLUGIN_RET_STOP;
        }
 

-       if (data->argc != 2)
+       if (!(session = strtol(data->argv[1], &end, 10)) || *end)

        {
        {

-               data->response = NSCTL_RES_ERR;
-               data->additional = "one argument required: username or session id";
-               return PLUGIN_RET_STOP;
+               if (flag)
+                       session = p->get_session_by_username(data->argv[1]);
+               else
+                       session = 0; // can't ungarden by username

        }
 
        }
 

-       if (!(session = strtol(data->argv[0], &end, 10)) || *end)
-               session = p->get_session_by_username(data->argv[0]);
-

        if (session)
                s = p->get_session_by_id(session);
 
        if (session)
                s = p->get_session_by_id(session);
 


@@ -127,7 +138,9 @@ int plugin_control(struct param_control *data)
                return PLUGIN_RET_STOP;
        }
 
                return PLUGIN_RET_STOP;
        }
 

-       garden_session(s, flag);
+       garden_session(s, flag, data->argc > 2 ? data->argv[2] : 0);
+       p->session_changed(session);
+

        data->response = NSCTL_RES_OK;
        data->additional = 0;
 
        data->response = NSCTL_RES_OK;
        data->additional = 0;
 


@@ -141,7 +154,7 @@ int plugin_become_master(void)
 
        for (i = 0; up_commands[i] && *up_commands[i]; i++)
        {
 
        for (i = 0; up_commands[i] && *up_commands[i]; i++)
        {

-               p->log(3, 0, 0, 0, "Running %s\n", up_commands[i]);
+               p->log(3, 0, 0, "Running %s\n", up_commands[i]);

                system(up_commands[i]);
        }
 
                system(up_commands[i]);
        }
 


@@ -149,29 +162,28 @@ int plugin_become_master(void)
 }
 
 // Called for each active session after becoming master
 }
 
 // Called for each active session after becoming master

-int plugin_new_session_master(sessiont * s)
+int plugin_new_session_master(sessiont *s)

 {      
        if (s->walled_garden)
 {      
        if (s->walled_garden)

-       {
-               s->walled_garden = 0;
-               garden_session(s, 1);
-       }
+               garden_session(s, F_GARDEN, 0);

 
        return PLUGIN_RET_OK;
 }
 
 
        return PLUGIN_RET_OK;
 }
 

-int garden_session(sessiont *s, int flag)
+int garden_session(sessiont *s, int flag, char *newuser)

 {
        char cmd[2048];
 {
        char cmd[2048];

+       sessionidt sess;

 
        if (!s) return 0;
        if (!s->opened) return 0;
 
 
        if (!s) return 0;
        if (!s->opened) return 0;
 

-       if (flag == 1)
+       sess = p->get_id_by_session(s);
+       if (flag == F_GARDEN)

        {
        {

-               p->log(2, 0, 0, s->tunnel, "Garden user %s (%s)\n", s->user, p->inet_toa(htonl(s->ip)));
-               snprintf(cmd, sizeof(cmd), "iptables -t nat -A garden_users -s %s -j garden", p->inet_toa(htonl(s->ip)));
-               p->log(3, 0, 0, s->tunnel, "%s\n", cmd);
+               p->log(2, sess, s->tunnel, "Garden user %s (%s)\n", s->user, p->fmtaddr(htonl(s->ip), 0));
+               snprintf(cmd, sizeof(cmd), "iptables -t nat -A garden_users -s %s -j garden", p->fmtaddr(htonl(s->ip), 0));
+               p->log(3, sess, s->tunnel, "%s\n", cmd);

                system(cmd);
                s->walled_garden = 1;
        }
                system(cmd);
                s->walled_garden = 1;
        }


@@ -181,18 +193,26 @@ int garden_session(sessiont *s, int flag)
                int count = 40;
 
                // Normal User
                int count = 40;
 
                // Normal User

-               p->log(2, 0, 0, s->tunnel, "Un-Garden user %s (%s)\n", s->user, p->inet_toa(htonl(s->ip)));
+               p->log(2, sess, s->tunnel, "Un-Garden user %s (%s)\n", s->user, p->fmtaddr(htonl(s->ip), 0));
+               if (newuser)
+               {
+                       snprintf(s->user, MAXUSER, "%s", newuser);
+                       p->log(2, sess, s->tunnel, "  Setting username to %s\n", s->user);
+               }
+

                // Kick off any duplicate usernames
                // but make sure not to kick off ourself
                if (s->ip && !s->die && (other = p->get_session_by_username(s->user)) && s != p->get_session_by_id(other)) {
                        p->sessionkill(other, "Duplicate session when user released from walled garden");
                }
                /* Clean up counters */
                // Kick off any duplicate usernames
                // but make sure not to kick off ourself
                if (s->ip && !s->die && (other = p->get_session_by_username(s->user)) && s != p->get_session_by_id(other)) {
                        p->sessionkill(other, "Duplicate session when user released from walled garden");
                }
                /* Clean up counters */

-               s->cin = s->cout = 0;

                s->pin = s->pout = 0;
                s->pin = s->pout = 0;

+               s->cin = s->cout = 0;
+               s->cin_delta = s->cout_delta = 0;
+               s->cin_wrap = s->cout_wrap = 0;

 
 

-               snprintf(cmd, sizeof(cmd), "iptables -t nat -D garden_users -s %s -j garden", p->inet_toa(htonl(s->ip)));
-               p->log(3, 0, 0, s->tunnel, "%s\n", cmd);
+               snprintf(cmd, sizeof(cmd), "iptables -t nat -D garden_users -s %s -j garden", p->fmtaddr(htonl(s->ip), 0));
+               p->log(3, sess, s->tunnel, "%s\n", cmd);

                while (--count)
                {
                        int status = system(cmd);
                while (--count)
                {
                        int status = system(cmd);


@@ -201,13 +221,14 @@ int garden_session(sessiont *s, int flag)
 
                s->walled_garden = 0;
 
 
                s->walled_garden = 0;
 

-               if (!s->die) {
+               if (flag != F_CLEANUP)
+               {

                        /* OK, we're up! */
                        /* OK, we're up! */

-                       u16 r = p->radiusnew(p->get_id_by_session(s));
-                       p->radiussend(r, RADIUSSTART);
+                       uint16_t r = p->radiusnew(p->get_id_by_session(s));
+                       if (r) p->radiussend(r, RADIUSSTART);

                }
        }
                }
        }

-       s->walled_garden = flag;
+

        return 1;
 }
 
        return 1;
 }
 


@@ -236,7 +257,7 @@ int plugin_init(struct pluginfuncs *funcs)
                int i;
                for (i = 0; down_commands[i] && *down_commands[i]; i++)
                {
                int i;
                for (i = 0; down_commands[i] && *down_commands[i]; i++)
                {

-                       p->log(3, 0, 0, 0, "Running %s\n", down_commands[i]);
+                       p->log(3, 0, 0, "Running %s\n", down_commands[i]);

                        system(down_commands[i]);
                }
        }
                        system(down_commands[i]);
                }
        }


@@ -253,7 +274,7 @@ void plugin_done()
 
        for (i = 0; down_commands[i] && *down_commands[i]; i++)
        {
 
        for (i = 0; down_commands[i] && *down_commands[i]; i++)
        {

-               p->log(3, 0, 0, 0, "Running %s\n", down_commands[i]);
+               p->log(3, 0, 0, "Running %s\n", down_commands[i]);

                system(down_commands[i]);
        }
 }
                system(down_commands[i]);
        }
 }