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MINOR: log/backend: prevent tcp-{request,response} use with LOG mode

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We start implementing some postparsing compatibility checks for log
backends.

Here we report a warning if user tries to use tcp-{request,response} rules
with log backend, and we properly ignore such rules when inherited from
defaults section.
This commit is contained in:
Aurelien DARRAGON 2023-11-16 10:48:34 +01:00 committed by Willy Tarreau
parent 6a29888f60
commit 5335618967
2 changed files with 37 additions and 4 deletions
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31
src/log.c
View File

@ -41,6 +41,7 @@
#include <haproxy/ssl_sock.h>
#include <haproxy/stconn.h>
#include <haproxy/stream.h>
#include <haproxy/action.h>
#include <haproxy/time.h>
#include <haproxy/hash.h>
#include <haproxy/tools.h>
@ -874,6 +875,32 @@ static void log_backend_srv_down(struct server *srv)
HA_RWLOCK_WRUNLOCK(LBPRM_LOCK, &p->lbprm.lock);
}
/* check that current configuration is compatible with "mode log" */
static int _postcheck_log_backend_compat(struct proxy *be)
{
int err_code = ERR_NONE;
if (!LIST_ISEMPTY(&be->tcp_req.inspect_rules) ||
!LIST_ISEMPTY(&be->tcp_req.l4_rules) ||
!LIST_ISEMPTY(&be->tcp_req.l5_rules)) {
ha_warning("Cannot use tcp-request rules with 'mode log' in %s '%s'. They will be ignored.\n",
proxy_type_str(be), be->id);
err_code |= ERR_WARN;
free_act_rules(&be->tcp_req.inspect_rules);
free_act_rules(&be->tcp_req.l4_rules);
free_act_rules(&be->tcp_req.l5_rules);
}
if (!LIST_ISEMPTY(&be->tcp_rep.inspect_rules)) {
ha_warning("Cannot use tcp-response rules with 'mode log' in %s '%s'. They will be ignored.\n",
proxy_type_str(be), be->id);
err_code |= ERR_WARN;
free_act_rules(&be->tcp_rep.inspect_rules);
}
return err_code;
}
static int postcheck_log_backend(struct proxy *be)
{
char *msg = NULL;
@ -885,6 +912,10 @@ static int postcheck_log_backend(struct proxy *be)
(be->flags & (PR_FL_DISABLED|PR_FL_STOPPED)))
return ERR_NONE; /* nothing to do */
err_code |= _postcheck_log_backend_compat(be);
if (err_code & ERR_CODE)
return err_code;
/* First time encoutering this log backend, perform some init
*/
be->lbprm.set_server_status_up = log_backend_srv_up;

10
src/tcp_rules.c
View File

@ -103,7 +103,9 @@ int tcp_inspect_request(struct stream *s, struct channel *req, int an_bit)
DBG_TRACE_ENTER(STRM_EV_STRM_ANA|STRM_EV_TCP_ANA, s);
def_rules = ((s->be->defpx && (an_bit == AN_REQ_INSPECT_FE || s->be->defpx != sess->fe->defpx)) ? &s->be->defpx->tcp_req.inspect_rules : NULL);
def_rules = ((s->be->defpx &&
(sess->fe->mode == PR_MODE_TCP || sess->fe->mode == PR_MODE_HTTP) &&
(an_bit == AN_REQ_INSPECT_FE || s->be->defpx != sess->fe->defpx)) ? &s->be->defpx->tcp_req.inspect_rules : NULL);
rules = &s->be->tcp_req.inspect_rules;
/* We don't know whether we have enough data, so must proceed
@ -286,7 +288,7 @@ int tcp_inspect_response(struct stream *s, struct channel *rep, int an_bit)
DBG_TRACE_ENTER(STRM_EV_STRM_ANA|STRM_EV_TCP_ANA, s);
def_rules = (s->be->defpx ? &s->be->defpx->tcp_rep.inspect_rules : NULL);
def_rules = (s->be->defpx && (s->be->mode == PR_MODE_TCP || s->be->mode == PR_MODE_HTTP) ? &s->be->defpx->tcp_rep.inspect_rules : NULL);
rules = &s->be->tcp_rep.inspect_rules;
/* We don't know whether we have enough data, so must proceed
@ -484,7 +486,7 @@ int tcp_exec_l4_rules(struct session *sess)
if (!conn)
return result;
if (sess->fe->defpx)
if (sess->fe->defpx && (sess->fe->mode == PR_MODE_TCP || sess->fe->mode == PR_MODE_HTTP))
px = sess->fe->defpx;
restart:
@ -579,7 +581,7 @@ int tcp_exec_l5_rules(struct session *sess)
int result = 1;
enum acl_test_res ret;
if (sess->fe->defpx)
if (sess->fe->defpx && (sess->fe->mode == PR_MODE_TCP || sess->fe->mode == PR_MODE_HTTP))
px = sess->fe->defpx;
restart: