- Add snoopctl, throttlectl plugins.
- Update documentation.
- Cleanup: make a bunch of global functions/variables static.
- Remove reference to old -a command line argument.
- Add l2tpns(8) and nsctl(8) manpages from Jonathan McDowell.
-- Add startup-config(5) manpage [FIXME].
+- Add startup-config(5) manpage.
- Revise nsctl to allow arbitrary strings/args to be passed to plugins.
+- Add snoopctl, throttlectl plugins.
* Mon Nov 15 2004 Brendan O'Dea <bod@optusnet.com.au> 2.0.7
- Fix socket creation in host_unreachable() (thanks to Bjørn Augestad)
set boolean true
</PRE>
+<P>
<UL>
<LI><B>debug</B> (int)<BR>
Sets the level of messages that will be written to the log file. The value
Note that the higher you set the debugging level, the slower the program
will run. Also, at level 5 a LOT of information will be logged. This should
only ever be used for working out why it doesn't work at all.
-<P>
</LI>
<LI><B>log_file</B> (string)<BR>
This will be where all logging and debugging information is written
-to. This can be either a filename, such as <EM>/var/log/l2tpns</EM>, or
+to. This may be either a filename, such as <EM>/var/log/l2tpns</EM>, or
the special magic string <EM>syslog:facility</EM>, where <EM>facility</EM>
is any one of the syslog logging facilities, such as local5.
-<P>
</LI>
<LI><B>pid_file</B> (string)<BR>
-If this is set, the process id will be written to this file. The filename must
-contain an absolute path.
-<P>
+If set, the process id will be written to the specified file. The
+value must be an absolute path.
</LI>
<LI><B>l2tp_secret</B> (string)<BR>
-This sets the string that l2tpns will use for authenticating tunnel request.
-This must be the same as the LAC, or authentication will fail. This will
-only actually be used if the LAC requests authentication.
-<P>
+The secret used by l2tpns for authenticating tunnel request. Must be
+the same as the LAC, or authentication will fail. Only actually be
+used if the LAC requests authentication.
</LI>
<LI><B>primary_dns</B> (ip address)
Whenever a PPP connection is established, DNS servers will be sent to the
user, both a primary and a secondary. If either is set to 0.0.0.0, then that
one will not be sent.
-<P>
</LI>
<LI><B>save_state</B> (boolean)<BR>
be re-loaded at startup. The validity of this data is obviously quite
short and the intent is to allow an sessions to be retained over a
software upgrade.
-<P>
</LI>
<LI><B>primary_radius</B> (ip address)
<LI><B>secondary_radius</B> (ip address)<BR>
-This sets the radius servers used for both authentication and
-accounting. If the primary server does not respond, then the
-secondary radius server will be tried.
-<P>
+Sets the radius servers used for both authentication and accounting.
+If the primary server does not respond, then the secondary radius
+server will be tried.
</LI>
<LI><B>primary_radius_port</B> (short)
<LI><B>secondary_radius_port</B> (short)<BR>
-This sets the authentication ports for the primary and secondary
-radius servers. The accounting port is one more than the authentication
-port. If no radius ports are given, the authentication port defaults to 1645,
-and the accounting port to 1646.
-<P>
+Sets the authentication ports for the primary and secondary radius
+servers. The accounting port is one more than the authentication
+port. If no radius ports are given, the authentication port defaults
+to 1645, and the accounting port to 1646.
</LI>
<LI><B>radius_accounting</B> (boolean)<BR>
means that a Start record will be sent when the session is
successfully authenticated, and a Stop record will be sent when the
session is closed.
-<P>
</LI>
<LI><B>radius_secret</B> (string)<BR>
This secret will be used in all radius queries. If this is not set then
radius queries will fail.
-<P>
</LI>
<LI><B>bind_address</B> (ip address)<BR>
specified here. If no address is given, 1.1.1.1 is used. Packets
containing user traffic should be routed via this address if given,
otherwise the primary address of the machine.
-<P>
</LI>
+<LI><B>peer_address</B> (ip address)<BR>
+Address to send to clients as the default gateway.
+</L1>
+
<LI><B>send_garp</B> (boolean)<BR>
Determines whether or not to send a gratuitous ARP for the
bind_address when the server is ready to handle traffic (default:
true).<BR>
This value is ignored if BGP is configured.
-<P>
</LI>
<LI><B>throttle_speed</B> (int)<BR>
-Sets the speed (in kbits/s) which sessions will be limited to. If this is
-set to 0, then throttling will not be used at all. Note: You can set this by
-the CLI, but changes will not affect currently connected users.
-<P>
+Sets the default speed (in kbits/s) which sessions will be limited to.
+If this is set to 0, then throttling will not be used at all. Note:
+You can set this by the CLI, but changes will not affect currently
+connected users.
</LI>
<LI><B>throttle_buckets</B> (int)<BR>
Number of token buckets to allocate for throttling. Each throttled
session requires two buckets (in and out).
-<P>
</LI>
<LI><B>accounting_dir</B> (string)<BR>
separated by a space.<BR> The fields are username, ip, qos,
uptxoctets, downrxoctets. The qos field is 1 if a standard user, and
2 if the user is throttled.
-<P>
</LI>
<LI><B>setuid</B> (int)<BR>
After starting up and binding the interface, change UID to this. This
doesn't work properly.
-<P>
</LI>
<LI><B>dump_speed</B> (boolean)<BR>
If set to true, then the current bandwidth utilization will be logged every
second. Even if this is disabled, you can see this information by running
the <EM>uptime</EM> command on the CLI.
-<P>
</LI>
<LI><B>cleanup_interval</B> (int)<BR>
Interval between regular cleanups (in seconds).
-<P>
</LI>
<LI><B>multi_read_count</B> (int)<BR>
Number of packets to read off each of the UDP and TUN fds when
returned as readable by select (default: 10). Avoids incurring the
unnecessary system call overhead of select on busy servers.
-<P>
</LI>
<LI><B>scheduler_fifo</B> (boolean)<BR>
Sets the scheduling policy for the l2tpns process to SCHED_FIFO. This
-causes the kernel to immediately preempt any currently SCHED_OTHER
+causes the kernel to immediately preempt any currently running SCHED_OTHER
(normal) process in favour of l2tpns when it becomes runnable.
Ignored on uniprocessor systems.
-<P>
</LI>
<LI><B>lock_pages</B> (boolean)<BR>
Keep all pages mapped by the l2tpns process in memory.
-<P>
</LI>
<LI><B>icmp_rate</B> (int)<BR>
-Maximum number of host unreachable icmp packets to send per second.
-<P>
+Maximum number of host unreachable ICMP packets to send per second.
</LI>
<LI><B>cluster_address</B> (ip address)<BR>
Multicast cluster address (default: 239.192.13.13). See the section
on <A HREF="#Clustering">Clustering</A> for more information.
-<P>
</LI>
<LI><B>cluster_interface</B> (string)<BR>
Interface for cluster packets (default: eth0).
-<P>
</LI>
<LI><B>cluster_hb_interval</B> (int)<BR>
Interval in tenths of a second between cluster heartbeat/pings.
-<P>
</LI>
<LI><B>cluster_hb_timeout</B> (int)<BR>
Cluster heartbeat timeout in tenths of a second. A new master will be
elected when this interval has been passed without seeing a heartbeat
from the master.
-<P>
</LI>
+</UL>
-<LI><B>as_number</B> (int)<BR>
-Defines the local AS number for BGP (see <A HREF="#Routing">Routing</A>).
-<P>
-</LI>
+<P>BGP routing configuration is entered by the command:
+The routing configuration section is entered by the command
+<DL><DD><B>router bgp</B> <I>as</I></DL>
+where <I>as</I> specifies the local AS number.
-<LI><B>bgp_peer1</B> (string)
-<LI><B>bgp_peer1_as</B> (int)
-<LI><B>bgp_peer2</B> (string)
-<LI><B>bgp_peer2_as</B> (int)<BR>
-<P>
-DNS name (or IP) and AS number of BGP peers.
-</LI>
-</UL>
+<P>Subsequent lines prefixed with
+<DL><DD><B>neighbour</B> <I>peer</I></DL>
+define the attributes of BGP neighhbours. Valid commands are:
+<DL>
+ <DD><B>neighbour</B> <I>peer</I> <B>remote-as</B> <I>as</I>
+ <DD><B>neighbout</B> <I>peer</I> <B>timers</B> <I>keepalive hold</I>
+</DL>
+
+Where <I>peer</I> specifies the BGP neighbour as either a hostname or
+IP address, <I>as</I> is the remote AS number and <I>keepalive</I>,
+<I>hold</I> are the timer values in seconds.
<H3 ID="users">users</H3>
method of control is by the Command-Line Interface (CLI).<P>
You can also remotely send commands to modules via the nsctl client
-provided. This currently only works with the walled garden module, but
-modification is trivial to support other modules.<P>
+provided.<P>
Also, there are a number of signals that l2tpns understands and takes action
when it receives them.
<H3 ID="nsctl">nsctl</H3>
-nsctl
was implemented (badly) to allow messages to be passed to modules.<P>
+nsctl
allows messages to be passed to plugins.<P>
-You must pass at least 2 parameters: <EM>host</EM> and <EM>command</EM>. The
-host is the address of the l2tpns server which you want to send the message
-to.<P>
+Arguments are <EM>command</EM> and optional <EM>args</EM>. See
+<STRONG>nsctl</STRONG>(8) for more details.<P>
-Command can currently be either <EM>garden</EM> or <EM>ungarden</EM>. With
-both of these commands, you must give a session ID as the 3rd parameter.
-This will activate or deactivate the walled garden for a session
-temporarily.
+Built-in command are <EM>load_plugin</EM>, <EM>unload_plugin</EM> and
+<EM>help</EM>. Any other commands are passed to plugins for processing.
<H3 ID="Signals">Signals</H3>
.de Id
.ds Dt \\$4 \\$5
..
-.Id $Id: nsctl.8,v 1.1 2004-11-17 08:23:35 bodea Exp $
+.Id $Id: nsctl.8,v 1.2 2004-11-17 15:08:19 bodea Exp $
.TH NSCTL 8 "\*(Dt" L2TPNS "System Management Commands"
.SH NAME
-nsctl \- Issue commands to l2tpns plugins
+nsctl \- manage running l2tpns instance
.SH SYNOPSIS
.B nsctl
.RB [ \-d ]
.RI [ arg " ...]"
.SH DESCRIPTION
.B nsctl
-is part of the
+sends commands to a running
.B l2tpns
-package. It allows the system administrator to send manage plugin
-features of a running l2tpns process.
+process. It provides both for the loading or unloading of plugins and
+also the management of sessions via functions provided by those plugins.
.SH OPTIONS
.TP
.B \-d
if any)
are sent to
.B l2tpns
-as-is, to be passed to each plugin in turn (and possibly acted upon).
+as-is, to be passed to each plugin which registers a
+.B plugin_control
+function in turn (in which it may be acted upon).
.SH SEE ALSO
.BR l2tpns (8)
.SH AUTHOR
--- /dev/null
+.\" -*- nroff -*-
+.de Id
+.ds Dt \\$4 \\$5
+..
+.Id $Id: startup-config.5,v 1.1 2004-11-17 15:08:19 bodea Exp $
+.TH STARTUP-CONFIG 5 "\*(Dt" L2TPNS "File Formats and Conventions"
+.SH NAME
+startup\-config \- configuration file for l2tpns
+.SH SYNOPSIS
+/etc/l2tpns/startup-config
+.SH DESCRIPTION
+.B startup-config
+is the configuration file for
+.BR l2tpns .
+.PP
+The format is plain text, in the same format as accepted by the
+configuration mode of
+.BR l2tpns 's
+telnet administrative interface. Comments are indicated by either the
+character
+.B #
+or
+.BR ! .
+.SS SETTINGS
+Settings are specified with
+.IP
+.BI "set " "variable value"
+.PP
+The following
+.IR variable s
+may be set:
+.RS
+.TP
+.B debug
+Set the level of debugging messages written to the log file. The
+value should be between 0 and 5, with 0 being no debugging, and 5
+being the highest.
+.TP
+.B log_file
+This will be where all logging and debugging information is written
+to. This may be either a filename, such as
+.BR /var/log/l2tpns ,
+or the string
+.BR syslog : \fIfacility\fR ,
+where
+.I facility
+is any one of the syslog logging facilities, such as
+.BR local5 .
+.TP
+.B pid_file
+If set, the process id will be written to the specified file. The
+value must be an absolute path.
+.TP
+.B l2tp_secret
+The secret used by
+.B l2tpns
+for authenticating tunnel request. Must be the same as the LAC, or
+authentication will fail. Only actually be used if the LAC requests
+authentication.
+.TP
+.BR primary_dns , " secondary_dns"
+Whenever a PPP connection is established, DNS servers will be sent to the
+user, both a primary and a secondary. If either is set to 0.0.0.0, then that
+one will not be sent.
+.TP
+.B save_state
+When
+.B l2tpns
+receives a STGTERM it will write out its current ip_address_pool,
+session and tunnel tables to disk prior to exiting to be re-loaded at
+startup. The validity of this data is obviously quite short and the
+intent is to allow an sessions to be retained over a software upgrade.
+.TP
+.BR primary_radius , " secondary_radius"
+Sets the RADIUS servers used for both authentication and accounting.
+If the primary server does not respond, then the secondary RADIUS
+server will be tried.
+.TP
+.BR primary_radius_port , " secondary_radius_port"
+Sets the authentication ports for the primary and secondary RADIUS
+servers. The accounting port is one more than the authentication
+port. If no ports are given, authentication defaults to 1645, and
+accounting to 1646.
+.TP
+.B radius_accounting
+If set to true, then RADIUS accounting packets will be sent. A
+.B Start
+record will be sent when the session is successfully authenticated,
+and a
+.B Stop
+record when the session is closed.
+.TP
+.B radius_secret
+Secret to be used in RADIUS packets.
+.TP
+.B bind_address
+When the tun interface is created, it is assigned the address
+specified here. If no address is given, 1.1.1.1 is used. Packets
+containing user traffic should be routed via this address if given,
+otherwise the primary address of the machine.
+.TP
+.B peer_address
+Address to send to clients as the default gateway.
+.TP
+.B send_garp
+Determines whether or not to send a gratuitous ARP for the
+.B bind_address
+when the server is ready to handle traffic (default: true). This
+setting is ignored if BGP is configured.
+.TP
+.B throttle_speed
+Sets the default speed (in kbits/s) which sessions will be limited to.
+.TP
+.B throttle_buckets
+Number of token buckets to allocate for throttling. Each throttled
+session requires two buckets (in and out).
+.TP
+.B accounting_dir
+If set to a directory, then every 5 minutes the current usage for
+every connected use will be dumped to a file in this directory.
+.TP
+.B setuid
+After starting up and binding the interface, change UID to this. This
+doesn't work properly.
+.TP
+.B dump_speed
+If set to true, then the current bandwidth utilization will be logged
+every second. Even if this is disabled, you can see this information
+by running the
+.B
+uptime
+command on the CLI.
+.TP
+.B cleanup_interval
+Interval between regular cleanups (in seconds).
+.TP
+.B multi_read_count
+Number of packets to read off each of the UDP and TUN fds when
+returned as readable by select (default: 10). Avoids incurring the
+unnecessary system call overhead of select on busy servers.
+.TP
+.B scheduler_fifo
+Sets the scheduling policy for the
+.B l2tpns
+process to
+.BR SCHED_FIFO .
+This causes the kernel to immediately preempt any currently running
+.B SCHED_OTHER
+(normal) process in favour of
+.B l2tpns
+when it becomes runnable.
+.br
+Ignored on uniprocessor systems.
+.TP
+.B lock_pages
+Keep all pages mapped by the
+.B l2tpns
+process in memory.
+.TP
+.B icmp_rate
+Maximum number of host unreachable ICMP packets to send per second.
+.TP
+.B cluster_address
+Multicast cluster address (default: 239.192.13.13).
+.TP
+.B cluster_interface
+Interface for cluster packets (default: eth0).
+.TP
+.B cluster_hb_interval
+Interval in tenths of a second between cluster heartbeat/pings.
+.TP
+.B cluster_hb_timeout
+Cluster heartbeat timeout in tenths of a second. A new master will be
+elected when this interval has been passed without seeing a heartbeat
+from the master.
+.RE
+.SS BGP ROUTING
+The routing configuration section is entered by the command
+.IP
+.BI "router bgp " as
+.PP
+where
+.I as
+specifies the local AS number.
+.PP
+Subsequent lines prefixed with
+.BI "neighbour " peer
+define the attributes of BGP neighhbours. Valid commands are:
+.IP
+.BI "neighbour " peer " remote-as " as
+.br
+.BI "neighbour " peer " timers " "keepalive hold"
+.PP
+Where
+.I peer
+specifies the BGP neighbour as either a hostname or IP address,
+.I as
+is the remote AS number and
+.IR keepalive ,
+.I hold
+are the timer values in seconds.
+.SH SEE ALSO
+.BR l2tpns (8)
LDLIBS = -lm
INSTALL = install -c -D -o root -g root
-OBJS = arp.o \
- bgp.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
-
-PLUGINS = garden.so autothrottle.so autosnoop.so stripdomain.so setrxspeed.so
+OBJS = arp.o bgp.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
+
+PLUGINS = garden.so throttlectl.so autothrottle.so snoopctl.so \
+ autosnoop.so stripdomain.so setrxspeed.so
+
TARGETS = l2tpns nsctl generateload bounce $(PLUGINS)
all: $(TARGETS)
echo '***' Installing default config files in $(DESTDIR)$(etcdir) - remember to adjust them; \
suffix=; \
fi; \
+
$(INSTALL) -m 0600 etc/startup-config.default $(DESTDIR)$(etcdir)/startup-config$$suffix; \
$(INSTALL) -m 0644 etc/ip_pool.default $(DESTDIR)$(etcdir)/ip_pool$$suffix; \
$(INSTALL) -m 0600 etc/users.default $(DESTDIR)$(etcdir)/users$$suffix
tbf.o: tbf.c l2tpns.h util.h tbf.h
util.o: util.c l2tpns.h bgp.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
setrxspeed.so: setrxspeed.c l2tpns.h plugin.h
set setuid 0
set dump_speed no
load plugin "garden"
+load plugin "throttlectl"
load plugin "autothrottle"
+load plugin "snoopctl"
load plugin "autosnoop"
/* 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 1.14 2004-11-17 15:08:19 bodea Exp $";
int plugin_api_version = PLUGIN_API_VERSION;
static struct pluginfuncs *p = 0;
}
char *plugin_control_help[] = {
- " garden USER|SID Put user into the walled garden",
- " ungarden USER|SID Release user",
+ " garden USER|SID Put user into the walled garden",
+ " ungarden USER|SID Release user from garden",
0
};
int plugin_control(struct param_control *data)
{
- sessionidt session;
- sessiont *s = 0;
+ sessionidt s;
+ sessiont *sess = 0;
int flag;
char *end;
- if (data->argc < 1 || (strcmp(data->argv[0], "garden") && strcmp(data->argv[0], "ungarden")))
+ if (data->argc < 1)
+ return PLUGIN_RET_OK;
+
+ if (strcmp(data->argv[0], "garden") && strcmp(data->argv[0], "ungarden"))
return PLUGIN_RET_OK; // not for us
- flag = data->argv[0][0] == 'g';
+ flag = data->argv[0][0] != 'u';
if (!iam_master) // All garden processing happens on the master.
{
return PLUGIN_RET_STOP;
}
- if (!(session = strtol(data->argv[0], &end, 10)) || *end)
- session = p->get_session_by_username(data->argv[0]);
+ if (!(session = strtol(data->argv[1], &end, 10)) || *end)
+ session = p->get_session_by_username(data->argv[1]);
if (session)
s = p->get_session_by_id(session);
}
garden_session(s, flag);
+ p->sesssion_changed(session);
+
data->response = NSCTL_RES_OK;
data->additional = 0;
}
// Called for each active session after becoming master
-int plugin_new_session_master(sessiont * s)
+int plugin_new_session_master(sessiont *s)
{
if (s->walled_garden)
{
// Copyright (c) 2002 FireBrick (Andrews & Arnold Ltd / Watchfront Ltd) - GPL licenced
// vim: sw=8 ts=8
-char const *cvs_id_l2tpns = "$Id: l2tpns.c,v 1.51 2004-11-17 08:23:34 bodea Exp $";
+char const *cvs_id_l2tpns = "$Id: l2tpns.c,v 1.52 2004-11-17 15:08:19 bodea Exp $";
#include <arpa/inet.h>
#include <assert.h>
sessionbyuser,
sessiontbysessionidt,
sessionidtbysessiont,
- sessionkill,
radiusnew,
radiussend,
getconfig,
+ sessionkill,
+ throttle_session,
+ cluster_send_session,
};
void *p = open_plugin(plugin_name, 1);
char *usage;
int action;
} builtins[] = {
- { "load_plugin", " PLUGIN Load named plugin", NSCTL_REQ_LOAD },
- { "unload_plugin", " PLUGIN Unload named plugin", NSCTL_REQ_UNLOAD },
- { "help", " List available commands", NSCTL_REQ_HELP },
+ { "load_plugin", " PLUGIN Load named plugin", NSCTL_REQ_LOAD },
+ { "unload_plugin", " PLUGIN Unload named plugin", NSCTL_REQ_UNLOAD },
+ { "help", " List available commands", NSCTL_REQ_HELP },
{ 0 }
};
-
static int debug = 0;
static int timeout = 2; // 2 seconds
static char *me;
sessionidt (*get_session_by_username)(char *username);
sessiont *(*get_session_by_id)(sessionidt s);
sessionidt (*get_id_by_session)(sessiont *s);
- void (*sessionkill)(sessionidt s, char *reason);
u16 (*radiusnew)(sessionidt s);
void (*radiussend)(u16 r, u8 state);
void *(*getconfig)(char *key, enum config_typet type);
+ void (*sessionkill)(sessionidt s, char *reason);
+ void (*throttle)(sessionidt s, int rate_in, int rate_out);
+ int (*session_changed)(int sid);
};
struct param_pre_auth
--- /dev/null
+#include <string.h>
+#include "l2tpns.h"
+#include "plugin.h"
+#include "control.h"
+
+/* snoop control */
+
+char const *cvs_id = "$Id: snoopctl.c,v 1.1 2004-11-17 15:08:19 bodea Exp $";
+
+int plugin_api_version = PLUGIN_API_VERSION;
+static struct pluginfuncs *p = 0;
+
+char *plugin_control_help[] = {
+ " snoop USER|SID IP PORT Intercept user traffic",
+ " unsnoop USER|SID Stop intercepting user",
+ 0
+};
+
+static int iam_master = 0;
+
+int plugin_init(struct pluginfuncs *funcs)
+{
+ if (!funcs)
+ return 0;
+
+ p = funcs;
+ return 1;
+}
+
+int plugin_become_master(void)
+{
+ iam_master = 1;
+ return PLUGIN_RET_OK;
+}
+
+int plugin_control(struct param_control *data)
+{
+ sessionidt session;
+ sessiont *s = 0;
+ int flag;
+ char *end;
+
+ if (data->argc < 1)
+ return PLUGIN_RET_OK;
+
+ if (strcmp(data->argv[0], "snoop") && strcmp(data->argv[0], "unsnoop"))
+ return PLUGIN_RET_OK; // not for us
+
+ flag = data->argv[0][0] != 'u';
+
+ if (!iam_master)
+ {
+ data->response = NSCTL_RES_ERR;
+ data->additional = "must be run on the cluster master";
+ return PLUGIN_RET_STOP;
+ }
+
+ if (flag)
+ {
+ if (data->argc != 4)
+ {
+ data->response = NSCTL_RES_ERR;
+ data->additional = "requires username or session id and host, port";
+ return PLUGIN_RET_STOP;
+ }
+ }
+ else
+ {
+ if (data->argc != 2)
+ {
+ data->response = NSCTL_RES_ERR;
+ data->additional = "requires username or session id";
+ 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 (flag)
+ {
+ ipt ip = inet_addr(data->argv[2]);
+ u16 port = atoi(data->argv[3]);
+
+ if (!ip || ip == INADDR_NONE)
+ {
+ data->response = NSCTL_RES_ERR;
+ data->additional = "invalid ip address";
+ return PLUGIN_RET_STOP;
+ }
+
+ if (!port)
+ {
+ data->response = NSCTL_RES_ERR;
+ data->additional = "invalid port";
+ return PLUGIN_RET_STOP;
+ }
+
+ if (ip == s->snoop_ip && port == s->snoop_port)
+ {
+ data->response = NSCTL_RES_ERR;
+ data->additional = "already intercepted";
+ return PLUGIN_RET_STOP;
+ }
+
+ s->snoop_ip = ip;
+ s->snoop_port = port;
+ }
+ else
+ {
+ if (!s->snoop_ip)
+ {
+ data->response = NSCTL_RES_ERR;
+ data->additional = "not intercepted";
+ return PLUGIN_RET_STOP;
+ }
+
+ s->snoop_ip = 0;
+ s->snoop_port = 0;
+ }
+
+ p->sesssion_changed(session);
+
+ data->response = NSCTL_RES_OK;
+ data->additional = 0;
+
+ return PLUGIN_RET_STOP;
+}
--- /dev/null
+#include <string.h>
+#include "l2tpns.h"
+#include "plugin.h"
+#include "control.h"
+
+/* throttle control */
+
+char const *cvs_id = "$Id: throttlectl.c,v 1.1 2004-11-17 15:08:19 bodea Exp $";
+
+int plugin_api_version = PLUGIN_API_VERSION;
+static struct pluginfuncs *p = 0;
+
+char *plugin_control_help[] = {
+ " throttle USER|SID [RATE|[in|out] RATE ...] Throttle user traffic",
+ " unthrottle USER|SID Stop throttling user",
+ 0
+};
+
+static int iam_master = 0;
+
+int plugin_init(struct pluginfuncs *funcs)
+{
+ if (!funcs)
+ return 0;
+
+ p = funcs;
+ return 1;
+}
+
+int plugin_become_master(void)
+{
+ iam_master = 1;
+ return PLUGIN_RET_OK;
+}
+
+int plugin_control(struct param_control *data)
+{
+ sessionidt session;
+ sessiont *s = 0;
+ int flag;
+ char *end;
+ int rate_in = 0;
+ int rate_out = 0;
+
+ if (data->argc < 1)
+ return PLUGIN_RET_OK;
+
+ if (strcmp(data->argv[0], "throttle")
+ && strcmp(data->argv[0], "unthrottle"))
+ return PLUGIN_RET_OK; // not for us
+
+ flag = data->argv[0][0] != 'g';
+
+ if (!iam_master)
+ {
+ data->response = NSCTL_RES_ERR;
+ data->additional = "must be run on the cluster master";
+ return PLUGIN_RET_STOP;
+ }
+
+ if (flag)
+ {
+ if (data->argc < 2 || data->argc > 4)
+ {
+ data->response = NSCTL_RES_ERR;
+ data->additional = "requires username or session id and optional rate(s)";
+ return PLUGIN_RET_STOP;
+ }
+ }
+ else
+ {
+ if (data->argc != 2)
+ {
+ data->response = NSCTL_RES_ERR;
+ data->additional = "requires username or session id";
+ 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 (flag)
+ {
+ rate_in = rate_out = -1;
+ if (data->argc == 2)
+ {
+ unsigned long *rate = p->getconfig("throttle_speed", UNSIGNED_LONG);
+ rate_in = rate_out = *rate;
+ }
+ else if (data->argc == 3)
+ {
+ rate_in = rate_out = atoi(data->argv[2]);
+ }
+ else
+ {
+ int i;
+ for (i = 2; i < data->argc - 1; i += 2)
+ {
+ int len = strlen(data->argv[i]);
+ if (!strncmp(data->argv[i], "in", len))
+ {
+ rate_in = atoi(argv[i+1]);
+ }
+ else if (!strncmp(data->argv[i], "out", len))
+ {
+ rate_out = atoi(argv[i+1]);
+ }
+ else
+ {
+ data->response = NSCTL_RES_ERR;
+ data->additional = "invalid rate";
+ return PLUGIN_RET_STOP;
+ }
+ }
+ }
+
+ if (!rate_in || !rate_out)
+ {
+ data->response = NSCTL_RES_ERR;
+ data->additional = "invalid rate";
+ return PLUGIN_RET_STOP;
+ }
+ }
+
+ if (rate_in != -1 && rate_in == s->throttle_in &&
+ rate_out != -1 && rate_out == s->throttle_out)
+ {
+ data->response = NSCTL_RES_ERR;
+ data->additional = flag ? "already throttled" : "not throttled";
+ return PLUGIN_RET_STOP;
+ }
+
+ p->throttle(session, rate_in, rate_out);
+ p->sesssion_changed(session);
+
+ data->response = NSCTL_RES_OK;
+ data->additional = 0;
+
+ return PLUGIN_RET_STOP;
+}
projects / l2tpns.git / commitdiff