blob: 17716b5ea040e9d47c66459765874d13989928de [file] [log] [blame]
/*
* Action management functions.
*
* Copyright 2017 HAProxy Technologies, Christopher Faulet <cfaulet@haproxy.com>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*
*/
#include <haproxy/api.h>
#include <haproxy/pool.h>
#include <haproxy/list.h>
#include <haproxy/tools.h>
#include <proto/action.h>
#include <proto/log.h>
#include <proto/obj_type.h>
#include <proto/proxy.h>
#include <proto/stick_table.h>
#include <proto/task.h>
/* Find and check the target table used by an action track-sc*. This
* function should be called during the configuration validity check.
*
* The function returns 1 in success case, otherwise, it returns 0 and err is
* filled.
*/
int check_trk_action(struct act_rule *rule, struct proxy *px, char **err)
{
struct stktable *target;
if (rule->arg.trk_ctr.table.n)
target = stktable_find_by_name(rule->arg.trk_ctr.table.n);
else
target = px->table;
if (!target) {
memprintf(err, "unable to find table '%s' referenced by track-sc%d",
rule->arg.trk_ctr.table.n ? rule->arg.trk_ctr.table.n : px->id,
rule->action);
return 0;
}
if (!stktable_compatible_sample(rule->arg.trk_ctr.expr, target->type)) {
memprintf(err, "stick-table '%s' uses a type incompatible with the 'track-sc%d' rule",
rule->arg.trk_ctr.table.n ? rule->arg.trk_ctr.table.n : px->id,
rule->action);
return 0;
}
else if (target->proxy && (px->bind_proc & ~target->proxy->bind_proc)) {
memprintf(err, "stick-table '%s' referenced by 'track-sc%d' rule not present on all processes covered by proxy '%s'",
target->id, rule->action, px->id);
return 0;
}
else {
if (!in_proxies_list(target->proxies_list, px)) {
px->next_stkt_ref = target->proxies_list;
target->proxies_list = px;
}
free(rule->arg.trk_ctr.table.n);
rule->arg.trk_ctr.table.t = target;
/* Note: if we decide to enhance the track-sc syntax, we may be
* able to pass a list of counters to track and allocate them
* right here using stktable_alloc_data_type().
*/
}
if (rule->from == ACT_F_TCP_REQ_CNT && (px->cap & PR_CAP_FE) && !px->tcp_req.inspect_delay &&
!(rule->arg.trk_ctr.expr->fetch->val & SMP_VAL_FE_SES_ACC)) {
ha_warning("config : %s '%s' : a 'tcp-request content track-sc*' rule explicitly depending on request"
" contents without any 'tcp-request inspect-delay' setting."
" This means that this rule will randomly find its contents. This can be fixed by"
" setting the tcp-request inspect-delay.\n",
proxy_type_str(px), px->id);
}
return 1;
}
/* check a capture rule. This function should be called during the configuration
* validity check.
*
* The function returns 1 in success case, otherwise, it returns 0 and err is
* filled.
*/
int check_capture(struct act_rule *rule, struct proxy *px, char **err)
{
if (rule->from == ACT_F_TCP_REQ_CNT && (px->cap & PR_CAP_FE) && !px->tcp_req.inspect_delay &&
!(rule->arg.trk_ctr.expr->fetch->val & SMP_VAL_FE_SES_ACC)) {
ha_warning("config : %s '%s' : a 'tcp-request capture' rule explicitly depending on request"
" contents without any 'tcp-request inspect-delay' setting."
" This means that this rule will randomly find its contents. This can be fixed by"
" setting the tcp-request inspect-delay.\n",
proxy_type_str(px), px->id);
}
return 1;
}
int act_resolution_cb(struct dns_requester *requester, struct dns_nameserver *nameserver)
{
struct stream *stream;
if (requester->resolution == NULL)
return 0;
stream = objt_stream(requester->owner);
if (stream == NULL)
return 0;
task_wakeup(stream->task, TASK_WOKEN_MSG);
return 0;
}
int act_resolution_error_cb(struct dns_requester *requester, int error_code)
{
struct stream *stream;
if (requester->resolution == NULL)
return 0;
stream = objt_stream(requester->owner);
if (stream == NULL)
return 0;
task_wakeup(stream->task, TASK_WOKEN_MSG);
return 0;
}