Fix "show ip bgp dampened-paths" garbage output.

* bgpd/bgp_damp.c: Make bgp_damp_reuse_time_vty() accept a buffer and
  length, rather than returning a local var buffer whose contents can get
  trounced.  Remove duplicate BGP_UPTIME_LEN define.
* bgpd/bgp_damp.h: bgp_damp_reuse_time_vty() prototype change.
* bgpd/bgp_route.c: Provide bgp_damp_reuse_time_vty() with a buffer and
  length.  Remove duplicate BGP_UPTIME_LEN define.

This problem was noticed in 2005...

  http://hibernia.jakma.org/~paul/patches/quagga-test.diff

...but the fix didn't make it into the code.

Signed-off-by: Chris Caputo <ccaputo@alt.net>

1 files changed, 3 insertions, 5 deletions

diff --git a/bgpd/bgp_damp.c b/bgpd/bgp_damp.c
index 346ba520..e21131ef 100644
--- a/bgpd/bgp_damp.c
+++ b/bgpd/bgp_damp.c
@@ -541,8 +541,6 @@ bgp_config_write_damp (struct vty *vty)
 	     VTY_NEWLINE);
 }
 
-#define BGP_UPTIME_LEN 25
-
 static const char *
 bgp_get_reuse_time (unsigned int penalty, char *buf, size_t len)
 {
@@ -616,11 +614,11 @@ bgp_damp_info_vty (struct vty *vty, struct bgp_info *binfo)
 }
 
 const char *
-bgp_damp_reuse_time_vty (struct vty *vty, struct bgp_info *binfo)
+bgp_damp_reuse_time_vty (struct vty *vty, struct bgp_info *binfo,
+                         char *timebuf, size_t len)
 {
   struct bgp_damp_info *bdi;
   time_t t_now, t_diff;
-  char timebuf[BGP_UPTIME_LEN];
   int penalty;
   
   if (!binfo->extra)
@@ -639,5 +637,5 @@ bgp_damp_reuse_time_vty (struct vty *vty, struct bgp_info *binfo)
   t_diff = t_now - bdi->t_updated;
   penalty = bgp_damp_decay (t_diff, bdi->penalty);
 
-  return  bgp_get_reuse_time (penalty, timebuf, BGP_UPTIME_LEN);
+  return  bgp_get_reuse_time (penalty, timebuf, len);
 }