This is the original post on the ip-goingdown patch.
Thought it might be of interest, given recent posts.
-- Michael
Forwarded by Michael Hutchinson <[EMAIL PROTECTED]>
---------------- Original message follows ----------------
From: Erv Walter <[EMAIL PROTECTED]>
To: [EMAIL PROTECTED]
Date: Sat, 7 Mar 1998 19:21:26 -0600 (CST)
Subject: ip-goingdown patch
--
I have patched diald to add ip-goingdown functionality. I thought
other people might be interested in this. ip-goingdown is like ip-down
except that it is run immediatly *before* the connection is taken down.
This is useful for people who use services like ml.org that need to
send a quick packet to deactivate their dynamic DNS resolution. The
patch addes a ip-goingdown configfile option that works just like
ip-down. ip-goingdown is called with the same options as ip-down. I
believe that I have it so activity in ip-goingdown will not make the
link non-idle again (it shouldn't restart right away). In anycase, I
added ignore lines to prevent the specific site I connect to from
affecting the connection.
NOTE: ip-goingdown is not called in the background. diald waits for
this to return so don't put things in here that take a long time.
There is a 1 second delay after the script returns before diald closes
the link to allow trafic to make it out.
ip-goingdown is not called if the link dies on it's own (HANGUP or
direct pppd killing). Therefore, I have also added a line in my
personal ip-down to kill my dynamic-ip client in cases where this
happens.
Modify this at will, ignore it, or add it to the offical sources :)
Erv Walter
--
Graduate Student [EMAIL PROTECTED]
Department of Chemistry [EMAIL PROTECTED]
Univ of Wisconsin-Madison [EMAIL PROTECTED]
<PGP Public Key: finger [EMAIL PROTECTED]>
Whaddya mean you don't STAPLE diskette labels on.
-- tagline 1.00 by xopy
----------------------------------------------------------------
Only in diald-0.16.5.new/: core
diff -rwu diald-0.16.5/diald.h diald-0.16.5.new/diald.h
--- diald-0.16.5/diald.h Fri Mar 6 09:20:04 1998
+++ diald-0.16.5.new/diald.h Thu Mar 5 22:48:45 1998
@@ -211,6 +211,7 @@
char *delroute;
char *ip_up;
char *ip_down;
+char *ip_goingdown;
char *acctlog;
char *pidlog;
char *fifoname;
@@ -430,6 +431,7 @@
void forward_buffer(void);
void run_ip_up(void);
void run_ip_down(void);
+void run_ip_goingdown(void);
void set_ptp(char *, int, char *, int);
void add_routes(char *, int, char *, char *, int);
void del_routes(char *, int, char *, char *, int);
diff -rwu diald-0.16.5/fsm.c diald-0.16.5.new/fsm.c
--- diald-0.16.5/fsm.c Sun Jan 25 18:51:48 1998
+++ diald-0.16.5.new/fsm.c Thu Mar 5 23:03:41 1998
@@ -295,6 +295,7 @@
if (!forced && queue_empty() && state_timeout == -1) {
syslog(LOG_INFO,"Closing down idle link.");
take_link_down:
+ run_ip_goingdown();
current_retry_count = 0;
flush_timeout_queue();
/* WARNING: You MUST do this before calling idle_filter_proxy(),
diff -rwu diald-0.16.5/options.c diald-0.16.5.new/options.c
--- diald-0.16.5/options.c Sun Jan 25 18:51:48 1998
+++ diald-0.16.5.new/options.c Thu Mar 5 22:47:50 1998
@@ -34,6 +34,7 @@
char *delroute = 0;
char *ip_up = 0;
char *ip_down = 0;
+char *ip_goingdown = 0;
char *acctlog = 0;
char *pidlog = "diald.pid";
char *fifoname = 0;
@@ -125,6 +126,7 @@
{"proxyarp","",0,&proxyarp,set_flag},
{"ip-up","<script>",1,&ip_up,set_str},
{"ip-down","<script>",1,&ip_down,set_str},
+ {"ip-goingdown","<script>",1,&ip_goingdown,set_str},
{"reroute","",0,&do_reroute,set_flag},
{"-reroute","",0,&do_reroute,clear_flag},
#ifdef SIOCSKEEPALIVE
@@ -213,6 +215,7 @@
delroute = 0;
ip_up = 0;
ip_down = 0;
+ ip_goingdown = 0;
acctlog = 0;
pidlog = "diald.pid";
fifoname = 0;
diff -rwu diald-0.16.5/proxy.c diald-0.16.5.new/proxy.c
--- diald-0.16.5/proxy.c Sun Jan 25 18:51:49 1998
+++ diald-0.16.5.new/proxy.c Thu Mar 5 23:25:27 1998
@@ -264,3 +264,24 @@
background_system(buf);
}
}
+
+void run_ip_goingdown()
+{
+ char buf[128];
+ int res;
+
+ if (ip_goingdown) {
+ sprintf(buf,"%s %s %s %s %s",
+ ip_goingdown,
+ snoop_dev,
+ (netmask)?netmask:"255.255.255.255",
+ local_ip,
+ remote_ip);
+ if (debug&DEBUG_VERBOSE)
+ syslog(LOG_INFO,"running ip-goingdown script '%s'",buf);
+ res = system(buf);
+ report_system_result(res,buf);
+ usleep(1000000);
+ }
+}
+
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