X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~ian/git?a=blobdiff_plain;f=ipif%2Fforwarder.c;h=793ad24e787b3d50be3732668d809a2dd56d679d;hb=92bbf44b78dc7ad8a9372a27571e0cb9b7cf5ad3;hp=6179eaa0b94fc6e53f4753f274599c676960c562;hpb=31dcbf98f0d9c0dde01dd20848acc6ee47c83b27;p=userv-utils.git

diff --git a/ipif/forwarder.c b/ipif/forwarder.c
index 6179eaa..793ad24 100644
--- a/ipif/forwarder.c
+++ b/ipif/forwarder.c
@@ -6,7 +6,7 @@
  *  udptunnel-forwarder <optchars>
  *                      <public-local-fd> <private-in-fd> <private-out-fd>
  *                      <encdec-keys-fd>
- *                      <mtu> <keepalive> <timeout>
+ *                      <mtu> <keepalive> <timeout> <reannounce>
  *                      <public-remote-addr> [<public-remote-port>]
  *                      |<mech1> [<mech1-params> ...]
  *                      |<mech2> [<mech2-params> ...]
@@ -75,7 +75,7 @@ static struct utsname uname_result;
 
 static const char *opt_chars;
 static int public_local_fd, private_in_fd, private_out_fd;
-static int mtu2, keepalive, timeout;
+static int mtu2, keepalive, timeout, reannounce;
 static int public_remote_specd;
 static struct sockaddr_in public_remote;
 static int encdec_keys_fd, encdec_keys_write, crypto_debug;
@@ -178,6 +178,8 @@ static const struct mechanism *find_mech(const char *name) {
 
 static void inbound(void) {
   static int any_recvd;
+  static time_t nextreann;
+  static unsigned long npackets, nbytes;
   
   struct sockaddr_in this_saddr;
   int r, i, different, this_saddrlen;
@@ -219,6 +221,8 @@ static void inbound(void) {
     cdebugbuf(i, "decode", &buf_in, 3,0);
   }
 
+  npackets++;
+  nbytes += buf_in.size;
   alarm(timeout);
 
   different= (!public_remote_specd ||
@@ -245,8 +249,22 @@ static void inbound(void) {
 
     diag("tunnel open");
 
+  } else if (reannounce && now() >= nextreann) {
+
+    fprintf(stderr, "%s: tunnel still open: received %lu packets, %lu bytes\n",
+	    programid, npackets, nbytes);
+
+  } else {
+
+    goto no_set_reann; /* only reset this if we don't print a message. */
+
   }
 
+  if (reannounce)
+    nextreann= now() + reannounce;
+  
+no_set_reann:
+
   any_recvd= 1;
 
   if (!buf_in.size || *buf_in.start != 0300) {
@@ -345,6 +363,7 @@ int main(int argc, const char *const *const argv_in) {
   mtu2= getarg_ulong() * 2;
   keepalive= getarg_ulong();
   timeout= getarg_ulong();
+  reannounce= getarg_ulong();
   
   arg= getarg_string();
   if (*arg) {