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>
This commit is contained in:
Chris Caputo 2009-06-23 06:06:49 +00:00 committed by Paul Jakma
parent 6e79f8bba4
commit 50aef6f3b0
3 changed files with 8 additions and 10 deletions

View File

@ -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);
}

View File

@ -141,6 +141,7 @@ extern void bgp_damp_info_clean (void);
extern int bgp_damp_decay (time_t, int);
extern void bgp_config_write_damp (struct vty *);
extern void bgp_damp_info_vty (struct vty *, struct bgp_info *);
extern const char * bgp_damp_reuse_time_vty (struct vty *, struct bgp_info *);
extern const char * bgp_damp_reuse_time_vty (struct vty *, struct bgp_info *,
char *, size_t);
#endif /* _QUAGGA_BGP_DAMP_H */

View File

@ -5810,6 +5810,7 @@ damp_route_vty_out (struct vty *vty, struct prefix *p,
{
struct attr *attr;
int len;
char timebuf[BGP_UPTIME_LEN];
/* short status lead text */
route_vty_short_status_out (vty, binfo);
@ -5827,7 +5828,7 @@ damp_route_vty_out (struct vty *vty, struct prefix *p,
else
vty_out (vty, "%*s", len, " ");
vty_out (vty, "%s ", bgp_damp_reuse_time_vty (vty, binfo));
vty_out (vty, "%s ", bgp_damp_reuse_time_vty (vty, binfo, timebuf, BGP_UPTIME_LEN));
/* Print attribute */
attr = binfo->attr;
@ -5843,8 +5844,6 @@ damp_route_vty_out (struct vty *vty, struct prefix *p,
vty_out (vty, "%s", VTY_NEWLINE);
}
#define BGP_UPTIME_LEN 25
/* flap route */
static void
flap_route_vty_out (struct vty *vty, struct prefix *p,
@ -5888,7 +5887,7 @@ flap_route_vty_out (struct vty *vty, struct prefix *p,
if (CHECK_FLAG (binfo->flags, BGP_INFO_DAMPED)
&& ! CHECK_FLAG (binfo->flags, BGP_INFO_HISTORY))
vty_out (vty, "%s ", bgp_damp_reuse_time_vty (vty, binfo));
vty_out (vty, "%s ", bgp_damp_reuse_time_vty (vty, binfo, timebuf, BGP_UPTIME_LEN));
else
vty_out (vty, "%*s ", 8, " ");