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BUG/MINOR: http-rules: Return ACT_RET_ABRT to abort a transaction

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When an action interrupts a transaction, returning a response or not, it must
return the ACT_RET_ABRT value and not ACT_RET_DONE. ACT_RET_DONE is reserved to
stop the processing on the current channel but some analysers may still be
active. When ACT_RET_ABRT is returned, all analysers are removed, except FLT_END
if it is set.

No backport needed because on previous verions, the action return value was not
handled the same way.

It is stated in the comment the return action returns ACT_RET_ABRT on
success. It it the right code to use to abort a transaction. ACT_RET_DONE must
be used when the message processing must be stopped. This does not means the
transaction is interrupted.

No backport needed.
This commit is contained in:
Christopher Faulet 2020-03-06 11:18:39 +01:00
parent bc275a9e44
commit 90d22a88cb
2 changed files with 4 additions and 4 deletions
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6
src/http_act.c
View File

@ -361,7 +361,7 @@ static enum act_parse_ret parse_http_set_status(const char **args, int *orig_arg
* alternative to the silent-drop action to defend against DoS attacks, and may
* also be used with HTTP/2 to close a connection instead of just a stream.
* The txn status is unchanged, indicating no response was sent. The termination
* flags will indicate "PR". It always returns ACT_RET_DONE.
* flags will indicate "PR". It always returns ACT_RET_ABRT.
*/
static enum act_return http_action_reject(struct act_rule *rule, struct proxy *px,
struct session *sess, struct stream *s, int flags)
@ -382,7 +382,7 @@ static enum act_return http_action_reject(struct act_rule *rule, struct proxy *p
if (!(s->flags & SF_FINST_MASK))
s->flags |= SF_FINST_R;
return ACT_RET_DONE;
return ACT_RET_ABRT;
}
/* parse the "reject" action:
@ -1863,7 +1863,7 @@ static enum act_return http_action_return(struct act_rule *rule, struct proxy *p
struct buffer *body = NULL;
const char *status, *reason, *clen, *ctype;
unsigned int slflags;
enum act_return ret = ACT_RET_DONE;
enum act_return ret = ACT_RET_ABRT;
s->txn->status = rule->arg.http_return.status;
channel_htx_truncate(res, htx);

2
src/http_ana.c
View File

@ -2933,7 +2933,7 @@ static enum rule_result http_req_get_intercept_rule(struct proxy *px, struct lis
goto end;
case ACT_HTTP_REDIR:
rule_ret = HTTP_RULE_RES_DONE;
rule_ret = HTTP_RULE_RES_ABRT;
if (!http_apply_redirect_rule(rule->arg.redir, s, txn))
rule_ret = HTTP_RULE_RES_ERROR;
goto end;