BUG/MINOR: http-act: make release_http_redir() more robust
Since commit dd7e6c6dc ("BUG/MINOR: http-rules: completely free incorrect
TCP rules on error") free_act_rule() is called on some error paths, and one
of them involves incomplete redirect rules that may cause a crash if the
rule wasn't yet initialized, as shown in this config snippet:
frontend ft
mode http
bind *:8001
http-request redirect location /%[always_false,sdbm]
Let's simply make release_http_redir() more robust against null redirect
rules.
No backport needed since it seems that the only way to trigger this was
the extra check above that was merged during 2.6-dev.
diff --git a/src/http_act.c b/src/http_act.c
index 97d0024..95f6fde 100644
--- a/src/http_act.c
+++ b/src/http_act.c
@@ -1760,6 +1760,9 @@
struct redirect_rule *redir;
redir = rule->arg.redir;
+ if (!redir)
+ return;
+
LIST_DELETE(&redir->list);
if (redir->cond) {
prune_acl_cond(redir->cond);