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BUG/MAJOR: tcp: only call registered actions when they're registered

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Commit cc87a11 ("MEDIUM: tcp: add register keyword system.") introduced
the registration of new keywords for TCP rulesets. Unfortunately it
replaced the "accept" action with an unconditionnal call to the rule's
action function, resulting in an immediate segfault when using the
"accept" action in a TCP ruleset.

This bug reported by Baptiste Assmann was introduced in 1.6-dev1, no
backport is needed.
This commit is contained in:
Willy Tarreau 2015-04-24 10:10:53 +02:00
parent 0b1a4541dc
commit e91ffd093e
1 changed files with 4 additions and 3 deletions
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7
src/proto_tcp.c
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@ -1216,7 +1216,7 @@ resume_execution:
}
else {
/* Custom keywords. */
if (rule->action_ptr(rule, s->be, s) == 0) {
if (rule->action_ptr && !rule->action_ptr(rule, s->be, s)) {
s->current_rule = rule;
goto missing_data;
}
@ -1336,7 +1336,7 @@ resume_execution:
}
else {
/* Custom keywords. */
if (!rule->action_ptr(rule, s->be, s)) {
if (rule->action_ptr && !rule->action_ptr(rule, s->be, s)) {
channel_dont_close(rep);
s->current_rule = rule;
return 0;
@ -1415,7 +1415,8 @@ int tcp_exec_req_rules(struct session *sess)
}
else {
/* Custom keywords. */
rule->action_ptr(rule, sess->fe, NULL);
if (rule->action_ptr)
rule->action_ptr(rule, sess->fe, NULL);
/* otherwise it's an accept */
break;