add sessionctl

Changes

@@ -1,4 +1,4 @@
-* Mon May 9 2005 Brendan O'Dea <bod@optusnet.com.au> 2.1.0
+* Tue May 10 2005 Brendan O'Dea <bod@optusnet.com.au> 2.1.0
 - Add IPv6 support from Jonathan McDowell.
 - Add CHAP support from Jordan Hrycaj.
 - Add interim accounting support from Vladislav Bjelic.
@@ -60,6 +60,7 @@
   master kills all slaves once restarted).
 - Make "show running-config" a privileged command (contains clear text
   shared secrets).
+- Add sessionctl plugin to provide drop/kill via nsctl.
 
 * Fri Dec 17 2004 Brendan O'Dea <bod@optusnet.com.au> 2.0.13
 - Better cluster master collision resolution: keep a counter of state

Makefile

@@ -29,8 +29,8 @@ OBJS = arp.o cli.o cluster.o constants.o control.o icmp.o l2tpns.o \
     ll.o md5.o ppp.o radius.o tbf.o util.o
 
 PROGRAMS = l2tpns nsctl
-PLUGINS = garden.so throttlectl.so autothrottle.so snoopctl.so \
-    autosnoop.so stripdomain.so setrxspeed.so
+PLUGINS = autosnoop.so autothrottle.so garden.so sessionctl.so \
+    setrxspeed.so snoopctl.so stripdomain.so throttlectl.so
 
 TESTS = generateload bounce 
 
@@ -127,10 +127,11 @@ radius.o: radius.c md5.h constants.h l2tpns.h plugin.h util.h
 tbf.o: tbf.c l2tpns.h util.h tbf.h
 util.o: util.c l2tpns.h bgp.h
 bgp.o: bgp.c l2tpns.h bgp.h util.h
-garden.so: garden.c l2tpns.h plugin.h control.h
-throttlectl.so: throttlectl.c l2tpns.h plugin.h control.h
-autothrottle.so: autothrottle.c l2tpns.h plugin.h
-snoopctl.so: snoopctl.c l2tpns.h plugin.h control.h
 autosnoop.so: autosnoop.c l2tpns.h plugin.h
-stripdomain.so: stripdomain.c l2tpns.h plugin.h
+autothrottle.so: autothrottle.c l2tpns.h plugin.h
+garden.so: garden.c l2tpns.h plugin.h control.h
+sessionctl.so: sessionctl.c l2tpns.h plugin.h control.h
 setrxspeed.so: setrxspeed.c l2tpns.h plugin.h
+snoopctl.so: snoopctl.c l2tpns.h plugin.h control.h
+stripdomain.so: stripdomain.c l2tpns.h plugin.h
+throttlectl.so: throttlectl.c l2tpns.h plugin.h control.h

etc/startup-config.default

@@ -13,8 +13,9 @@ set throttle_speed 64
 set accounting_dir "/var/run/l2tpns/acct"
 set setuid 0
 set dump_speed no
-load plugin "garden"
+load plugin "sessionctl"
 load plugin "throttlectl"
 load plugin "autothrottle"
 load plugin "snoopctl"
 load plugin "autosnoop"
+load plugin "garden"

l2tpns.spec

@@ -43,5 +43,5 @@ rm -rf %{buildroot}
 %attr(644,root,root) /usr/share/man/man[58]/*
 
 %changelog
-* Mon May 9 2005 Brendan O'Dea <bod@optusnet.com.au> 2.1.0-1
+* Tue May 10 2005 Brendan O'Dea <bod@optusnet.com.au> 2.1.0-1
 - 2.1.0 release, see /usr/share/doc/l2tpns-2.1.0/Changes

plugin.h

@@ -1,7 +1,7 @@
 #ifndef __PLUGIN_H__
 #define __PLUGIN_H__
 
-#define PLUGIN_API_VERSION	4
+#define PLUGIN_API_VERSION	5
 #define MAX_PLUGIN_TYPES	30
 
 enum
@@ -35,6 +35,7 @@ struct pluginfuncs
 	uint16_t (*radiusnew)(sessionidt s);
 	void (*radiussend)(uint16_t r, uint8_t state);
 	void *(*getconfig)(char *key, enum config_typet type);
+	void (*sessionshutdown)(sessionidt s, char *reason, int result, int error);
 	void (*sessionkill)(sessionidt s, char *reason);
 	void (*throttle)(sessionidt s, int rate_in, int rate_out);
 	int (*session_changed)(int sid);

sessionctl.c

@@ -0,0 +1,78 @@
+#include <string.h>
+#include "l2tpns.h"
+#include "plugin.h"
+#include "control.h"
+
+/* session control */
+
+char const *cvs_id = "$Id: sessionctl.c,v 1.1 2005/05/10 06:44:11 bodea Exp $";
+
+int plugin_api_version = PLUGIN_API_VERSION;
+static struct pluginfuncs *p = 0;
+
+char *plugin_control_help[] = {
+    "  drop USER|SID [REASON]                      Shutdown user session",
+    "  kill USER|SID [REASON]                      Kill user session",
+    0
+};
+
+int plugin_init(struct pluginfuncs *funcs)
+{
+    if (!funcs)
+	return 0;
+
+    p = funcs;
+    return 1;
+}
+
+int plugin_control(struct param_control *data)
+{
+    sessionidt session;
+    sessiont *s = 0;
+    char *end;
+    char *reason;
+
+    if (data->argc < 1)
+	return PLUGIN_RET_OK;
+
+    if (strcmp(data->argv[0], "drop") && strcmp(data->argv[0], "kill"))
+	return PLUGIN_RET_OK; // not for us
+
+    if (!data->iam_master)
+	return PLUGIN_RET_NOTMASTER;
+
+    if (data->argc < 2 || data->argc > 3)
+    {
+	data->response = NSCTL_RES_ERR;
+	data->additional = "requires username or session id and optional reason";
+	return PLUGIN_RET_STOP;
+    }
+
+    if (!(session = strtol(data->argv[1], &end, 10)) || *end)
+	session = p->get_session_by_username(data->argv[1]);
+
+    if (session)
+	s = p->get_session_by_id(session);
+
+    if (!s || !s->ip)
+    {
+	data->response = NSCTL_RES_ERR;
+	data->additional = "session not found";
+	return PLUGIN_RET_STOP;
+    }
+
+    if (data->argc > 2)
+	reason = data->argv[2];
+    else
+	reaons = "Requested by administrator.";
+
+    if (data->argv[0][0] == 'd')
+	p->sessionshutdown(session, reason, 3, 0);
+    else
+	p->sessionkill(session, reason);
+
+    data->response = NSCTL_RES_OK;
+    data->additional = 0;
+
+    return PLUGIN_RET_STOP;
+}