[tpop3d-discuss] tpop3d hanging at prompt

[Chris Lightfoot]

On Tue, Nov 11, 2003 at 01:06:30PM -0600, Larry Chancy wrote:
> Right now I see 104 people with an established connection to port 110 but only 3 child processes. It looks like most of these are probably waiting for the initial +OK banner.

It is *just* possible that tpop3d is consuming your
system's entire supply of entropy (really) by trying to
read from /dev/urandom to create a server timestamp for
each request. (Not likely, but possible, and doesn't
explain the 99% load thing.)

Can you try, as a test, this patch:

diff -u -r1.52 connection.c
--- connection.c        6 Nov 2003 01:19:27 -0000       1.52
+++ connection.c        11 Nov 2003 19:14:21 -0000
@@ -60,7 +60,7 @@
     if (!s) return NULL;
     memset(s, 0, l);
     *s = '<';
-    
+#if 0    
     /* Get random "timestamp" data. */
     fd = open("/dev/urandom", O_RDONLY);
     if (fd != -1) {
@@ -69,7 +69,7 @@
         while (n == -1 && errno == EINTR);
         close(fd);
     }
-        
+#endif        
     if (n != sizeof(buffer)) {
         /* OK, we need to get some pseudo-random data from rand(3).
          * FIXME This is bad from a security PoV, and should be replaced by


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