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-rw-r--r--src/tcp_rules.c1428
1 files changed, 1428 insertions, 0 deletions
diff --git a/src/tcp_rules.c b/src/tcp_rules.c
new file mode 100644
index 0000000..9ce6c90
--- /dev/null
+++ b/src/tcp_rules.c
@@ -0,0 +1,1428 @@
+/*
+ * "tcp" rules processing
+ *
+ * Copyright 2000-2016 Willy Tarreau <w@1wt.eu>
+ *
+ * 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/acl.h>
+#include <haproxy/action.h>
+#include <haproxy/api.h>
+#include <haproxy/arg-t.h>
+#include <haproxy/capture-t.h>
+#include <haproxy/cfgparse.h>
+#include <haproxy/channel.h>
+#include <haproxy/connection.h>
+#include <haproxy/global.h>
+#include <haproxy/list.h>
+#include <haproxy/log.h>
+#include <haproxy/proxy.h>
+#include <haproxy/sample.h>
+#include <haproxy/sc_strm.h>
+#include <haproxy/stconn.h>
+#include <haproxy/stick_table.h>
+#include <haproxy/stream-t.h>
+#include <haproxy/tcp_rules.h>
+#include <haproxy/ticks.h>
+#include <haproxy/tools.h>
+#include <haproxy/trace.h>
+
+
+#define TRACE_SOURCE &trace_strm
+
+/* List head of all known action keywords for "tcp-request connection" */
+struct list tcp_req_conn_keywords = LIST_HEAD_INIT(tcp_req_conn_keywords);
+struct list tcp_req_sess_keywords = LIST_HEAD_INIT(tcp_req_sess_keywords);
+struct list tcp_req_cont_keywords = LIST_HEAD_INIT(tcp_req_cont_keywords);
+struct list tcp_res_cont_keywords = LIST_HEAD_INIT(tcp_res_cont_keywords);
+
+/*
+ * Register keywords.
+ */
+void tcp_req_conn_keywords_register(struct action_kw_list *kw_list)
+{
+ LIST_APPEND(&tcp_req_conn_keywords, &kw_list->list);
+}
+
+void tcp_req_sess_keywords_register(struct action_kw_list *kw_list)
+{
+ LIST_APPEND(&tcp_req_sess_keywords, &kw_list->list);
+}
+
+void tcp_req_cont_keywords_register(struct action_kw_list *kw_list)
+{
+ LIST_APPEND(&tcp_req_cont_keywords, &kw_list->list);
+}
+
+void tcp_res_cont_keywords_register(struct action_kw_list *kw_list)
+{
+ LIST_APPEND(&tcp_res_cont_keywords, &kw_list->list);
+}
+
+/*
+ * Return the struct tcp_req_action_kw associated to a keyword.
+ */
+struct action_kw *tcp_req_conn_action(const char *kw)
+{
+ return action_lookup(&tcp_req_conn_keywords, kw);
+}
+
+struct action_kw *tcp_req_sess_action(const char *kw)
+{
+ return action_lookup(&tcp_req_sess_keywords, kw);
+}
+
+struct action_kw *tcp_req_cont_action(const char *kw)
+{
+ return action_lookup(&tcp_req_cont_keywords, kw);
+}
+
+struct action_kw *tcp_res_cont_action(const char *kw)
+{
+ return action_lookup(&tcp_res_cont_keywords, kw);
+}
+
+/* This function performs the TCP request analysis on the current request. It
+ * returns 1 if the processing can continue on next analysers, or zero if it
+ * needs more data, encounters an error, or wants to immediately abort the
+ * request. It relies on buffers flags, and updates s->req->analysers. The
+ * function may be called for frontend rules and backend rules. It only relies
+ * on the backend pointer so this works for both cases.
+ */
+int tcp_inspect_request(struct stream *s, struct channel *req, int an_bit)
+{
+ struct list *def_rules, *rules;
+ struct session *sess = s->sess;
+ struct act_rule *rule;
+ int partial;
+ int act_opts = 0;
+
+ DBG_TRACE_ENTER(STRM_EV_STRM_ANA|STRM_EV_TCP_ANA, s);
+
+ 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
+ * this way :
+ * - iterate through all rules in their declaration order
+ * - if one rule returns MISS, it means the inspect delay is
+ * not over yet, then return immediately, otherwise consider
+ * it as a non-match.
+ * - if one rule returns OK, then return OK
+ * - if one rule returns KO, then return KO
+ */
+
+ if ((s->scf->flags & (SC_FL_EOS|SC_FL_ABRT_DONE)) || channel_full(req, global.tune.maxrewrite) ||
+ sc_waiting_room(s->scf) ||
+ !s->be->tcp_req.inspect_delay || tick_is_expired(s->rules_exp, now_ms)) {
+ partial = SMP_OPT_FINAL;
+ /* Action may yield while the inspect_delay is not expired and there is no read error */
+ if ((s->scf->flags & SC_FL_ERROR) || !s->be->tcp_req.inspect_delay || tick_is_expired(s->rules_exp, now_ms))
+ act_opts |= ACT_OPT_FINAL;
+ }
+ else
+ partial = 0;
+
+ /* If "the current_rule_list" match the executed rule list, we are in
+ * resume condition. If a resume is needed it is always in the action
+ * and never in the ACL or converters. In this case, we initialise the
+ * current rule, and go to the action execution point.
+ */
+ if (s->current_rule) {
+ rule = s->current_rule;
+ s->current_rule = NULL;
+ if ((def_rules && s->current_rule_list == def_rules) || s->current_rule_list == rules)
+ goto resume_execution;
+ }
+ s->current_rule_list = ((!def_rules || s->current_rule_list == def_rules) ? rules : def_rules);
+
+ restart:
+ list_for_each_entry(rule, s->current_rule_list, list) {
+ enum acl_test_res ret = ACL_TEST_PASS;
+
+ if (rule->cond) {
+ ret = acl_exec_cond(rule->cond, s->be, sess, s, SMP_OPT_DIR_REQ | partial);
+ if (ret == ACL_TEST_MISS)
+ goto missing_data;
+
+ ret = acl_pass(ret);
+ if (rule->cond->pol == ACL_COND_UNLESS)
+ ret = !ret;
+ }
+
+ if (ret) {
+ act_opts |= ACT_OPT_FIRST;
+resume_execution:
+ /* Always call the action function if defined */
+ if (rule->action_ptr) {
+ switch (rule->action_ptr(rule, s->be, s->sess, s, act_opts)) {
+ case ACT_RET_CONT:
+ break;
+ case ACT_RET_STOP:
+ case ACT_RET_DONE:
+ s->last_rule_file = rule->conf.file;
+ s->last_rule_line = rule->conf.line;
+ goto end;
+ case ACT_RET_YIELD:
+ s->current_rule = rule;
+ if (act_opts & ACT_OPT_FINAL) {
+ send_log(s->be, LOG_WARNING,
+ "Internal error: yield not allowed if the inspect-delay expired "
+ "for the tcp-request content actions.");
+ goto internal;
+ }
+ goto missing_data;
+ case ACT_RET_DENY:
+ s->last_rule_file = rule->conf.file;
+ s->last_rule_line = rule->conf.line;
+ goto deny;
+ case ACT_RET_ABRT:
+ s->last_rule_file = rule->conf.file;
+ s->last_rule_line = rule->conf.line;
+ goto abort;
+ case ACT_RET_ERR:
+ s->last_rule_file = rule->conf.file;
+ s->last_rule_line = rule->conf.line;
+ goto internal;
+ case ACT_RET_INV:
+ s->last_rule_file = rule->conf.file;
+ s->last_rule_line = rule->conf.line;
+ goto invalid;
+ }
+ continue; /* eval the next rule */
+ }
+
+ /* If not action function defined, check for known actions */
+ if (rule->action == ACT_ACTION_ALLOW) {
+ s->last_rule_file = rule->conf.file;
+ s->last_rule_line = rule->conf.line;
+ goto end;
+ }
+ else if (rule->action == ACT_ACTION_DENY) {
+ s->last_rule_file = rule->conf.file;
+ s->last_rule_line = rule->conf.line;
+ goto deny;
+ }
+ }
+ }
+
+ if (def_rules && s->current_rule_list == def_rules) {
+ s->current_rule_list = rules;
+ goto restart;
+ }
+
+ end:
+ /* if we get there, it means we have no rule which matches, or
+ * we have an explicit accept, so we apply the default accept.
+ */
+ req->analysers &= ~an_bit;
+ s->current_rule = s->current_rule_list = NULL;
+ req->analyse_exp = s->rules_exp = TICK_ETERNITY;
+ DBG_TRACE_LEAVE(STRM_EV_STRM_ANA|STRM_EV_TCP_ANA, s);
+ return 1;
+
+ missing_data:
+ channel_dont_connect(req);
+ /* just set the request timeout once at the beginning of the request */
+ if (!tick_isset(s->rules_exp) && s->be->tcp_req.inspect_delay)
+ s->rules_exp = tick_add(now_ms, s->be->tcp_req.inspect_delay);
+ req->analyse_exp = tick_first((tick_is_expired(req->analyse_exp, now_ms) ? 0 : req->analyse_exp), s->rules_exp);
+ DBG_TRACE_DEVEL("waiting for more data", STRM_EV_STRM_ANA|STRM_EV_TCP_ANA, s);
+ return 0;
+
+ deny:
+ _HA_ATOMIC_INC(&sess->fe->fe_counters.denied_req);
+ if (sess->listener && sess->listener->counters)
+ _HA_ATOMIC_INC(&sess->listener->counters->denied_req);
+ goto reject;
+
+ internal:
+ _HA_ATOMIC_INC(&sess->fe->fe_counters.internal_errors);
+ if (sess->listener && sess->listener->counters)
+ _HA_ATOMIC_INC(&sess->listener->counters->internal_errors);
+ if (!(s->flags & SF_ERR_MASK))
+ s->flags |= SF_ERR_INTERNAL;
+ goto reject;
+
+ invalid:
+ _HA_ATOMIC_INC(&sess->fe->fe_counters.failed_req);
+ if (sess->listener && sess->listener->counters)
+ _HA_ATOMIC_INC(&sess->listener->counters->failed_req);
+
+ reject:
+ sc_must_kill_conn(s->scf);
+ stream_abort(s);
+
+ abort:
+ req->analysers &= AN_REQ_FLT_END;
+ s->current_rule = s->current_rule_list = NULL;
+ req->analyse_exp = s->rules_exp = TICK_ETERNITY;
+
+ if (!(s->flags & SF_ERR_MASK))
+ s->flags |= SF_ERR_PRXCOND;
+ if (!(s->flags & SF_FINST_MASK))
+ s->flags |= SF_FINST_R;
+ DBG_TRACE_DEVEL("leaving on error|deny|abort", STRM_EV_STRM_ANA|STRM_EV_TCP_ANA|STRM_EV_TCP_ERR, s);
+ return 0;
+}
+
+/* This function performs the TCP response analysis on the current response. It
+ * returns 1 if the processing can continue on next analysers, or zero if it
+ * needs more data, encounters an error, or wants to immediately abort the
+ * response. It relies on buffers flags, and updates s->rep->analysers. The
+ * function may be called for backend rules.
+ */
+int tcp_inspect_response(struct stream *s, struct channel *rep, int an_bit)
+{
+ struct list *def_rules, *rules;
+ struct session *sess = s->sess;
+ struct act_rule *rule;
+ int partial;
+ int act_opts = 0;
+
+ DBG_TRACE_ENTER(STRM_EV_STRM_ANA|STRM_EV_TCP_ANA, s);
+
+ 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
+ * this way :
+ * - iterate through all rules in their declaration order
+ * - if one rule returns MISS, it means the inspect delay is
+ * not over yet, then return immediately, otherwise consider
+ * it as a non-match.
+ * - if one rule returns OK, then return OK
+ * - if one rule returns KO, then return KO
+ */
+ if ((s->scb->flags & (SC_FL_EOS|SC_FL_ABRT_DONE)) || channel_full(rep, global.tune.maxrewrite) ||
+ sc_waiting_room(s->scb) ||
+ !s->be->tcp_rep.inspect_delay || tick_is_expired(s->rules_exp, now_ms)) {
+ partial = SMP_OPT_FINAL;
+ /* Action may yield while the inspect_delay is not expired and there is no read error */
+ if ((s->scb->flags & SC_FL_ERROR) || !s->be->tcp_rep.inspect_delay || tick_is_expired(s->rules_exp, now_ms))
+ act_opts |= ACT_OPT_FINAL;
+ }
+ else
+ partial = 0;
+
+ /* If "the current_rule_list" match the executed rule list, we are in
+ * resume condition. If a resume is needed it is always in the action
+ * and never in the ACL or converters. In this case, we initialise the
+ * current rule, and go to the action execution point.
+ */
+ if (s->current_rule) {
+ rule = s->current_rule;
+ s->current_rule = NULL;
+ if ((def_rules && s->current_rule_list == def_rules) || s->current_rule_list == rules)
+ goto resume_execution;
+ }
+ s->current_rule_list = ((!def_rules || s->current_rule_list == def_rules) ? rules : def_rules);
+
+ restart:
+ list_for_each_entry(rule, s->current_rule_list, list) {
+ enum acl_test_res ret = ACL_TEST_PASS;
+
+ if (rule->cond) {
+ ret = acl_exec_cond(rule->cond, s->be, sess, s, SMP_OPT_DIR_RES | partial);
+ if (ret == ACL_TEST_MISS)
+ goto missing_data;
+
+ ret = acl_pass(ret);
+ if (rule->cond->pol == ACL_COND_UNLESS)
+ ret = !ret;
+ }
+
+ if (ret) {
+ act_opts |= ACT_OPT_FIRST;
+resume_execution:
+ /* Always call the action function if defined */
+ if (rule->action_ptr) {
+ switch (rule->action_ptr(rule, s->be, s->sess, s, act_opts)) {
+ case ACT_RET_CONT:
+ break;
+ case ACT_RET_STOP:
+ case ACT_RET_DONE:
+ s->last_rule_file = rule->conf.file;
+ s->last_rule_line = rule->conf.line;
+ goto end;
+ case ACT_RET_YIELD:
+ s->current_rule = rule;
+ if (act_opts & ACT_OPT_FINAL) {
+ send_log(s->be, LOG_WARNING,
+ "Internal error: yield not allowed if the inspect-delay expired "
+ "for the tcp-response content actions.");
+ goto internal;
+ }
+ channel_dont_close(rep);
+ goto missing_data;
+ case ACT_RET_DENY:
+ s->last_rule_file = rule->conf.file;
+ s->last_rule_line = rule->conf.line;
+ goto deny;
+ case ACT_RET_ABRT:
+ s->last_rule_file = rule->conf.file;
+ s->last_rule_line = rule->conf.line;
+ goto abort;
+ case ACT_RET_ERR:
+ s->last_rule_file = rule->conf.file;
+ s->last_rule_line = rule->conf.line;
+ goto internal;
+ case ACT_RET_INV:
+ s->last_rule_file = rule->conf.file;
+ s->last_rule_line = rule->conf.line;
+ goto invalid;
+ }
+ continue; /* eval the next rule */
+ }
+
+ /* If not action function defined, check for known actions */
+ if (rule->action == ACT_ACTION_ALLOW) {
+ s->last_rule_file = rule->conf.file;
+ s->last_rule_line = rule->conf.line;
+ goto end;
+ }
+ else if (rule->action == ACT_ACTION_DENY) {
+ s->last_rule_file = rule->conf.file;
+ s->last_rule_line = rule->conf.line;
+ goto deny;
+ }
+ else if (rule->action == ACT_TCP_CLOSE) {
+ s->scb->flags |= SC_FL_NOLINGER | SC_FL_NOHALF;
+ sc_must_kill_conn(s->scb);
+ sc_abort(s->scb);
+ sc_shutdown(s->scb);
+ s->last_rule_file = rule->conf.file;
+ s->last_rule_line = rule->conf.line;
+ goto end;
+ }
+ }
+ }
+
+ if (def_rules && s->current_rule_list == def_rules) {
+ s->current_rule_list = rules;
+ goto restart;
+ }
+
+ end:
+ /* if we get there, it means we have no rule which matches, or
+ * we have an explicit accept, so we apply the default accept.
+ */
+ rep->analysers &= ~an_bit;
+ s->current_rule = s->current_rule_list = NULL;
+ rep->analyse_exp = s->rules_exp = TICK_ETERNITY;
+ DBG_TRACE_LEAVE(STRM_EV_STRM_ANA|STRM_EV_TCP_ANA, s);
+ return 1;
+
+ missing_data:
+ /* just set the analyser timeout once at the beginning of the response */
+ if (!tick_isset(s->rules_exp) && s->be->tcp_rep.inspect_delay)
+ s->rules_exp = tick_add(now_ms, s->be->tcp_rep.inspect_delay);
+ rep->analyse_exp = tick_first((tick_is_expired(rep->analyse_exp, now_ms) ? 0 : rep->analyse_exp), s->rules_exp);
+ DBG_TRACE_DEVEL("waiting for more data", STRM_EV_STRM_ANA|STRM_EV_TCP_ANA, s);
+ return 0;
+
+ deny:
+ _HA_ATOMIC_INC(&s->sess->fe->fe_counters.denied_resp);
+ _HA_ATOMIC_INC(&s->be->be_counters.denied_resp);
+ if (s->sess->listener && s->sess->listener->counters)
+ _HA_ATOMIC_INC(&s->sess->listener->counters->denied_resp);
+ if (objt_server(s->target))
+ _HA_ATOMIC_INC(&__objt_server(s->target)->counters.denied_resp);
+ goto reject;
+
+ internal:
+ _HA_ATOMIC_INC(&s->sess->fe->fe_counters.internal_errors);
+ _HA_ATOMIC_INC(&s->be->be_counters.internal_errors);
+ if (s->sess->listener && s->sess->listener->counters)
+ _HA_ATOMIC_INC(&s->sess->listener->counters->internal_errors);
+ if (objt_server(s->target))
+ _HA_ATOMIC_INC(&__objt_server(s->target)->counters.internal_errors);
+ if (!(s->flags & SF_ERR_MASK))
+ s->flags |= SF_ERR_INTERNAL;
+ goto reject;
+
+ invalid:
+ _HA_ATOMIC_INC(&s->be->be_counters.failed_resp);
+ if (objt_server(s->target))
+ _HA_ATOMIC_INC(&__objt_server(s->target)->counters.failed_resp);
+
+ reject:
+ sc_must_kill_conn(s->scb);
+ stream_abort(s);
+
+ abort:
+ rep->analysers &= AN_RES_FLT_END;
+ s->current_rule = s->current_rule_list = NULL;
+ rep->analyse_exp = s->rules_exp = TICK_ETERNITY;
+
+ if (!(s->flags & SF_ERR_MASK))
+ s->flags |= SF_ERR_PRXCOND;
+ if (!(s->flags & SF_FINST_MASK))
+ s->flags |= SF_FINST_D;
+ DBG_TRACE_DEVEL("leaving on error", STRM_EV_STRM_ANA|STRM_EV_TCP_ANA|STRM_EV_TCP_ERR, s);
+ return 0;
+}
+
+
+/* This function performs the TCP layer4 analysis on the current request. It
+ * returns 0 if a reject rule matches, otherwise 1 if either an accept rule
+ * matches or if no more rule matches. It can only use rules which don't need
+ * any data. This only works on connection-based client-facing stream connectors.
+ */
+int tcp_exec_l4_rules(struct session *sess)
+{
+ struct proxy *px = sess->fe;
+ struct act_rule *rule;
+ struct connection *conn = objt_conn(sess->origin);
+ int result = 1;
+ enum acl_test_res ret;
+
+ if (!conn)
+ return result;
+
+ if (sess->fe->defpx && (sess->fe->mode == PR_MODE_TCP || sess->fe->mode == PR_MODE_HTTP))
+ px = sess->fe->defpx;
+
+ restart:
+ list_for_each_entry(rule, &px->tcp_req.l4_rules, list) {
+ ret = ACL_TEST_PASS;
+
+ if (rule->cond) {
+ ret = acl_exec_cond(rule->cond, sess->fe, sess, NULL, SMP_OPT_DIR_REQ|SMP_OPT_FINAL);
+ ret = acl_pass(ret);
+ if (rule->cond->pol == ACL_COND_UNLESS)
+ ret = !ret;
+ }
+
+ if (ret) {
+ /* Always call the action function if defined */
+ if (rule->action_ptr) {
+ switch (rule->action_ptr(rule, sess->fe, sess, NULL, ACT_OPT_FINAL | ACT_OPT_FIRST)) {
+ case ACT_RET_YIELD:
+ /* yield is not allowed at this point. If this return code is
+ * used it is a bug, so I prefer to abort the process.
+ */
+ send_log(sess->fe, LOG_WARNING,
+ "Internal error: yield not allowed with tcp-request connection actions.");
+ /* fall through */
+ case ACT_RET_STOP:
+ case ACT_RET_DONE:
+ goto end;
+ case ACT_RET_CONT:
+ break;
+ case ACT_RET_DENY:
+ case ACT_RET_ABRT:
+ case ACT_RET_ERR:
+ case ACT_RET_INV:
+ result = 0;
+ goto end;
+ }
+ continue; /* eval the next rule */
+ }
+
+ /* If not action function defined, check for known actions */
+ if (rule->action == ACT_ACTION_ALLOW) {
+ goto end;
+ }
+ else if (rule->action == ACT_ACTION_DENY) {
+ _HA_ATOMIC_INC(&sess->fe->fe_counters.denied_conn);
+ if (sess->listener && sess->listener->counters)
+ _HA_ATOMIC_INC(&sess->listener->counters->denied_conn);
+
+ result = 0;
+ goto end;
+ }
+ else if (rule->action == ACT_TCP_EXPECT_PX) {
+ if (!(conn->flags & CO_FL_HANDSHAKE)) {
+ if (xprt_add_hs(conn) < 0) {
+ result = 0;
+ goto end;
+ }
+ }
+ conn->flags |= CO_FL_ACCEPT_PROXY;
+ }
+ else if (rule->action == ACT_TCP_EXPECT_CIP) {
+ if (!(conn->flags & CO_FL_HANDSHAKE)) {
+ if (xprt_add_hs(conn) < 0) {
+ result = 0;
+ goto end;
+ }
+ }
+ conn->flags |= CO_FL_ACCEPT_CIP;
+ }
+ }
+ }
+
+ if (px != sess->fe) {
+ px = sess->fe;
+ goto restart;
+ }
+ end:
+ return result;
+}
+
+/* This function performs the TCP layer5 analysis on the current request. It
+ * returns 0 if a reject rule matches, otherwise 1 if either an accept rule
+ * matches or if no more rule matches. It can only use rules which don't need
+ * any data. This only works on session-based client-facing stream connectors.
+ * An example of valid use case is to track a stick-counter on the source
+ * address extracted from the proxy protocol.
+ */
+int tcp_exec_l5_rules(struct session *sess)
+{
+ struct proxy *px = sess->fe;
+ struct act_rule *rule;
+ int result = 1;
+ enum acl_test_res ret;
+
+ if (sess->fe->defpx && (sess->fe->mode == PR_MODE_TCP || sess->fe->mode == PR_MODE_HTTP))
+ px = sess->fe->defpx;
+
+ restart:
+ list_for_each_entry(rule, &px->tcp_req.l5_rules, list) {
+ ret = ACL_TEST_PASS;
+
+ if (rule->cond) {
+ ret = acl_exec_cond(rule->cond, sess->fe, sess, NULL, SMP_OPT_DIR_REQ|SMP_OPT_FINAL);
+ ret = acl_pass(ret);
+ if (rule->cond->pol == ACL_COND_UNLESS)
+ ret = !ret;
+ }
+
+ if (ret) {
+ /* Always call the action function if defined */
+ if (rule->action_ptr) {
+ switch (rule->action_ptr(rule, sess->fe, sess, NULL, ACT_OPT_FINAL | ACT_OPT_FIRST)) {
+ case ACT_RET_YIELD:
+ /* yield is not allowed at this point. If this return code is
+ * used it is a bug, so I prefer to abort the process.
+ */
+ send_log(sess->fe, LOG_WARNING,
+ "Internal error: yield not allowed with tcp-request session actions.");
+ /* fall through */
+ case ACT_RET_STOP:
+ case ACT_RET_DONE:
+ goto end;
+ case ACT_RET_CONT:
+ break;
+ case ACT_RET_DENY:
+ case ACT_RET_ABRT:
+ case ACT_RET_ERR:
+ case ACT_RET_INV:
+ result = 0;
+ goto end;
+ }
+ continue; /* eval the next rule */
+ }
+
+ /* If not action function defined, check for known actions */
+ if (rule->action == ACT_ACTION_ALLOW) {
+ goto end;
+ }
+ else if (rule->action == ACT_ACTION_DENY) {
+ _HA_ATOMIC_INC(&sess->fe->fe_counters.denied_sess);
+ if (sess->listener && sess->listener->counters)
+ _HA_ATOMIC_INC(&sess->listener->counters->denied_sess);
+
+ result = 0;
+ goto end;
+ }
+ }
+ }
+
+ if (px != sess->fe) {
+ px = sess->fe;
+ goto restart;
+ }
+ end:
+ return result;
+}
+
+/* Parse a tcp-response rule. Return a negative value in case of failure */
+static int tcp_parse_response_rule(char **args, int arg, int section_type,
+ struct proxy *curpx, const struct proxy *defpx,
+ struct act_rule *rule, char **err,
+ unsigned int where,
+ const char *file, int line)
+{
+ if ((curpx == defpx && strlen(defpx->id) == 0) || !(curpx->cap & PR_CAP_BE)) {
+ memprintf(err, "%s %s is only allowed in 'backend' sections or 'defaults' section with a name",
+ args[0], args[1]);
+ return -1;
+ }
+
+ if (strcmp(args[arg], "accept") == 0) {
+ arg++;
+ rule->action = ACT_ACTION_ALLOW;
+ rule->flags |= ACT_FLAG_FINAL;
+ }
+ else if (strcmp(args[arg], "reject") == 0) {
+ arg++;
+ rule->action = ACT_ACTION_DENY;
+ rule->flags |= ACT_FLAG_FINAL;
+ }
+ else if (strcmp(args[arg], "close") == 0) {
+ arg++;
+ rule->action = ACT_TCP_CLOSE;
+ rule->flags |= ACT_FLAG_FINAL;
+ }
+ else {
+ struct action_kw *kw;
+ kw = tcp_res_cont_action(args[arg]);
+ if (kw) {
+ arg++;
+ rule->kw = kw;
+ if (kw->parse((const char **)args, &arg, curpx, rule, err) == ACT_RET_PRS_ERR)
+ return -1;
+ } else {
+ const char *extra[] = { "accept", "reject", "close", NULL };
+ const char *best = action_suggest(args[arg], &tcp_res_cont_keywords, extra);
+
+ action_build_list(&tcp_res_cont_keywords, &trash);
+ memprintf(err,
+ "'%s %s' expects 'accept', 'close', 'reject', %s in %s '%s' (got '%s').%s%s%s",
+ args[0], args[1], trash.area,
+ proxy_type_str(curpx), curpx->id, args[arg],
+ best ? " Did you mean '" : "",
+ best ? best : "",
+ best ? "' maybe ?" : "");
+ return -1;
+ }
+ }
+
+ if (strcmp(args[arg], "if") == 0 || strcmp(args[arg], "unless") == 0) {
+ if ((rule->cond = build_acl_cond(file, line, &curpx->acl, curpx, (const char **)args+arg, err)) == NULL) {
+ memprintf(err,
+ "'%s %s %s' : error detected in %s '%s' while parsing '%s' condition : %s",
+ args[0], args[1], args[2], proxy_type_str(curpx), curpx->id, args[arg], *err);
+ return -1;
+ }
+ }
+ else if (*args[arg]) {
+ memprintf(err,
+ "'%s %s %s' only accepts 'if' or 'unless', in %s '%s' (got '%s')",
+ args[0], args[1], args[2], proxy_type_str(curpx), curpx->id, args[arg]);
+ return -1;
+ }
+ return 0;
+}
+
+
+/* This function executes a track-sc* actions. On success, it returns
+ * ACT_RET_CONT. If it must yield, it return ACT_RET_YIELD. Otherwsize
+ * ACT_RET_ERR is returned.
+ */
+static enum act_return tcp_action_track_sc(struct act_rule *rule, struct proxy *px,
+ struct session *sess, struct stream *s, int flags)
+{
+ struct stksess *ts;
+ struct stktable *t;
+ struct stktable_key *key;
+ struct sample smp;
+ int opt;
+
+ opt = SMP_OPT_DIR_REQ;
+ if (flags & ACT_FLAG_FINAL)
+ opt |= SMP_OPT_FINAL;
+
+ t = rule->arg.trk_ctr.table.t;
+ if (rule->from == ACT_F_TCP_REQ_CNT) { /* L7 rules: use the stream */
+ if (stkctr_entry(&s->stkctr[rule->action]))
+ goto end;
+
+ key = stktable_fetch_key(t, s->be, sess, s, opt, rule->arg.trk_ctr.expr, &smp);
+
+ if ((smp.flags & SMP_F_MAY_CHANGE) && !(flags & ACT_FLAG_FINAL))
+ return ACT_RET_YIELD; /* key might appear later */
+
+ if (key && (ts = stktable_get_entry(t, key))) {
+ stream_track_stkctr(&s->stkctr[rule->action], t, ts);
+ stkctr_set_flags(&s->stkctr[rule->action], STKCTR_TRACK_CONTENT);
+ if (sess->fe != s->be)
+ stkctr_set_flags(&s->stkctr[rule->action], STKCTR_TRACK_BACKEND);
+ }
+ }
+ else { /* L4/L5 rules: use the session */
+ if (stkctr_entry(&sess->stkctr[rule->action]))
+ goto end;
+
+ key = stktable_fetch_key(t, sess->fe, sess, NULL, opt, rule->arg.trk_ctr.expr, NULL);
+ if (key && (ts = stktable_get_entry(t, key)))
+ stream_track_stkctr(&sess->stkctr[rule->action], t, ts);
+ }
+
+ end:
+ return ACT_RET_CONT;
+}
+
+/* This function executes a capture actions. It executes a fetch expression,
+ * turns the result into a string and puts it in a capture slot. On success, it
+ * returns ACT_RET_CONT. If it must yield, it return ACT_RET_YIELD. Otherwsize
+ * ACT_RET_ERR is returned.
+ */
+static enum act_return tcp_action_capture(struct act_rule *rule, struct proxy *px,
+ struct session *sess, struct stream *s, int flags)
+{
+ struct sample *key;
+ struct cap_hdr *h = rule->arg.cap.hdr;
+ char **cap = s->req_cap;
+ int len, opt;
+
+ opt = ((rule->from == ACT_F_TCP_REQ_CNT) ? SMP_OPT_DIR_REQ : SMP_OPT_DIR_RES);
+ if (flags & ACT_FLAG_FINAL)
+ opt |= SMP_OPT_FINAL;
+
+ key = sample_fetch_as_type(s->be, sess, s, opt, rule->arg.cap.expr, SMP_T_STR);
+ if (!key)
+ goto end;
+
+ if ((key->flags & SMP_F_MAY_CHANGE) && !(flags & ACT_FLAG_FINAL))
+ return ACT_RET_YIELD; /* key might appear later */
+
+ if (cap[h->index] == NULL) {
+ cap[h->index] = pool_alloc(h->pool);
+ if (cap[h->index] == NULL) /* no more capture memory, ignore error */
+ goto end;
+ }
+
+ len = key->data.u.str.data;
+ if (len > h->len)
+ len = h->len;
+
+ memcpy(cap[h->index], key->data.u.str.area, len);
+ cap[h->index][len] = 0;
+
+ end:
+ return ACT_RET_CONT;
+}
+
+static void release_tcp_capture(struct act_rule * rule)
+{
+ release_sample_expr(rule->arg.cap.expr);
+}
+
+
+static void release_tcp_track_sc(struct act_rule * rule)
+{
+ release_sample_expr(rule->arg.trk_ctr.expr);
+}
+
+/* Parse a tcp-request rule. Return a negative value in case of failure */
+static int tcp_parse_request_rule(char **args, int arg, int section_type,
+ struct proxy *curpx, const struct proxy *defpx,
+ struct act_rule *rule, char **err,
+ unsigned int where, const char *file, int line)
+{
+ if (curpx == defpx && strlen(defpx->id) == 0) {
+ memprintf(err, "%s %s is not allowed in anonymous 'defaults' sections",
+ args[0], args[1]);
+ return -1;
+ }
+
+ if (strcmp(args[arg], "accept") == 0) {
+ arg++;
+ rule->action = ACT_ACTION_ALLOW;
+ rule->flags |= ACT_FLAG_FINAL;
+ }
+ else if (strcmp(args[arg], "reject") == 0) {
+ arg++;
+ rule->action = ACT_ACTION_DENY;
+ rule->flags |= ACT_FLAG_FINAL;
+ }
+ else if (strcmp(args[arg], "capture") == 0) {
+ struct sample_expr *expr;
+ struct cap_hdr *hdr;
+ int kw = arg;
+ int len = 0;
+
+ if (!(curpx->cap & PR_CAP_FE)) {
+ memprintf(err,
+ "'%s %s %s' : proxy '%s' has no frontend capability",
+ args[0], args[1], args[kw], curpx->id);
+ return -1;
+ }
+
+ if (!(where & SMP_VAL_FE_REQ_CNT)) {
+ memprintf(err,
+ "'%s %s' is not allowed in '%s %s' rules in %s '%s'",
+ args[arg], args[arg+1], args[0], args[1], proxy_type_str(curpx), curpx->id);
+ return -1;
+ }
+
+ arg++;
+
+ curpx->conf.args.ctx = ARGC_CAP;
+ expr = sample_parse_expr(args, &arg, file, line, err, &curpx->conf.args, NULL);
+ if (!expr) {
+ memprintf(err,
+ "'%s %s %s' : %s",
+ args[0], args[1], args[kw], *err);
+ return -1;
+ }
+
+ if (!(expr->fetch->val & where)) {
+ memprintf(err,
+ "'%s %s %s' : fetch method '%s' extracts information from '%s', none of which is available here",
+ args[0], args[1], args[kw], args[arg-1], sample_src_names(expr->fetch->use));
+ release_sample_expr(expr);
+ return -1;
+ }
+
+ if (strcmp(args[arg], "len") == 0) {
+ arg++;
+ if (!args[arg]) {
+ memprintf(err,
+ "'%s %s %s' : missing length value",
+ args[0], args[1], args[kw]);
+ release_sample_expr(expr);
+ return -1;
+ }
+ /* we copy the table name for now, it will be resolved later */
+ len = atoi(args[arg]);
+ if (len <= 0) {
+ memprintf(err,
+ "'%s %s %s' : length must be > 0",
+ args[0], args[1], args[kw]);
+ release_sample_expr(expr);
+ return -1;
+ }
+ arg++;
+ }
+
+ if (!len) {
+ memprintf(err,
+ "'%s %s %s' : a positive 'len' argument is mandatory",
+ args[0], args[1], args[kw]);
+ free(expr);
+ return -1;
+ }
+
+ hdr = calloc(1, sizeof(*hdr));
+ if (!hdr) {
+ memprintf(err, "parsing [%s:%d] : out of memory", file, line);
+ release_sample_expr(expr);
+ return -1;
+ }
+ hdr->next = curpx->req_cap;
+ hdr->name = NULL; /* not a header capture */
+ hdr->namelen = 0;
+ hdr->len = len;
+ hdr->pool = create_pool("caphdr", hdr->len + 1, MEM_F_SHARED);
+ hdr->index = curpx->nb_req_cap++;
+
+ curpx->req_cap = hdr;
+ curpx->to_log |= LW_REQHDR;
+
+ /* check if we need to allocate an http_txn struct for HTTP parsing */
+ curpx->http_needed |= !!(expr->fetch->use & SMP_USE_HTTP_ANY);
+
+ rule->arg.cap.expr = expr;
+ rule->arg.cap.hdr = hdr;
+ rule->action = ACT_CUSTOM;
+ rule->action_ptr = tcp_action_capture;
+ rule->check_ptr = check_capture;
+ rule->release_ptr = release_tcp_capture;
+ }
+ else if (strncmp(args[arg], "track-sc", 8) == 0) {
+ struct sample_expr *expr;
+ int kw = arg;
+ unsigned int tsc_num;
+ const char *tsc_num_str;
+
+ arg++;
+
+ tsc_num_str = &args[kw][8];
+ if (cfg_parse_track_sc_num(&tsc_num, tsc_num_str, tsc_num_str + strlen(tsc_num_str), err) == -1) {
+ memprintf(err, "'%s %s %s' : %s", args[0], args[1], args[kw], *err);
+ return -1;
+ }
+
+ curpx->conf.args.ctx = ARGC_TRK;
+ expr = sample_parse_expr(args, &arg, file, line, err, &curpx->conf.args, NULL);
+ if (!expr) {
+ memprintf(err,
+ "'%s %s %s' : %s",
+ args[0], args[1], args[kw], *err);
+ return -1;
+ }
+
+ if (!(expr->fetch->val & where)) {
+ memprintf(err,
+ "'%s %s %s' : fetch method '%s' extracts information from '%s', none of which is available here",
+ args[0], args[1], args[kw], args[arg-1], sample_src_names(expr->fetch->use));
+ release_sample_expr(expr);
+ return -1;
+ }
+
+ /* check if we need to allocate an http_txn struct for HTTP parsing */
+ curpx->http_needed |= !!(expr->fetch->use & SMP_USE_HTTP_ANY);
+
+ if (strcmp(args[arg], "table") == 0) {
+ arg++;
+ if (!args[arg]) {
+ memprintf(err,
+ "'%s %s %s' : missing table name",
+ args[0], args[1], args[kw]);
+ release_sample_expr(expr);
+ return -1;
+ }
+ /* we copy the table name for now, it will be resolved later */
+ rule->arg.trk_ctr.table.n = strdup(args[arg]);
+ arg++;
+ }
+ rule->action = tsc_num;
+ rule->arg.trk_ctr.expr = expr;
+ rule->action_ptr = tcp_action_track_sc;
+ rule->check_ptr = check_trk_action;
+ rule->release_ptr = release_tcp_track_sc;
+ }
+ else if (strcmp(args[arg], "expect-proxy") == 0) {
+ if (strcmp(args[arg+1], "layer4") != 0) {
+ memprintf(err,
+ "'%s %s %s' only supports 'layer4' in %s '%s' (got '%s')",
+ args[0], args[1], args[arg], proxy_type_str(curpx), curpx->id, args[arg+1]);
+ return -1;
+ }
+
+ if (!(where & SMP_VAL_FE_CON_ACC)) {
+ memprintf(err,
+ "'%s %s' is not allowed in '%s %s' rules in %s '%s'",
+ args[arg], args[arg+1], args[0], args[1], proxy_type_str(curpx), curpx->id);
+ return -1;
+ }
+
+ arg += 2;
+ rule->action = ACT_TCP_EXPECT_PX;
+ }
+ else if (strcmp(args[arg], "expect-netscaler-cip") == 0) {
+ if (strcmp(args[arg+1], "layer4") != 0) {
+ memprintf(err,
+ "'%s %s %s' only supports 'layer4' in %s '%s' (got '%s')",
+ args[0], args[1], args[arg], proxy_type_str(curpx), curpx->id, args[arg+1]);
+ return -1;
+ }
+
+ if (!(where & SMP_VAL_FE_CON_ACC)) {
+ memprintf(err,
+ "'%s %s' is not allowed in '%s %s' rules in %s '%s'",
+ args[arg], args[arg+1], args[0], args[1], proxy_type_str(curpx), curpx->id);
+ return -1;
+ }
+
+ arg += 2;
+ rule->action = ACT_TCP_EXPECT_CIP;
+ }
+ else {
+ struct action_kw *kw;
+ if (where & SMP_VAL_FE_CON_ACC) {
+ /* L4 */
+ kw = tcp_req_conn_action(args[arg]);
+ rule->kw = kw;
+ } else if (where & SMP_VAL_FE_SES_ACC) {
+ /* L5 */
+ kw = tcp_req_sess_action(args[arg]);
+ rule->kw = kw;
+ } else {
+ /* L6 */
+ kw = tcp_req_cont_action(args[arg]);
+ rule->kw = kw;
+ }
+ if (kw) {
+ arg++;
+ if (kw->parse((const char **)args, &arg, curpx, rule, err) == ACT_RET_PRS_ERR)
+ return -1;
+ } else {
+ const char *extra[] = { "accept", "reject", "capture", "track-sc", "expect-proxy", "expect-netscaler-cip", NULL };
+ const char *best = NULL;
+
+
+ if (where & SMP_VAL_FE_CON_ACC) {
+ action_build_list(&tcp_req_conn_keywords, &trash);
+ best = action_suggest(args[arg], &tcp_req_conn_keywords, extra);
+ }
+ else if (where & SMP_VAL_FE_SES_ACC) {
+ action_build_list(&tcp_req_sess_keywords, &trash);
+ best = action_suggest(args[arg], &tcp_req_sess_keywords, extra);
+ }
+ else {
+ action_build_list(&tcp_req_cont_keywords, &trash);
+ best = action_suggest(args[arg], &tcp_req_cont_keywords, extra);
+ }
+
+ memprintf(err,
+ "'%s %s' expects 'accept', 'reject', 'capture', 'expect-proxy', 'expect-netscaler-cip', 'track-sc0' ... 'track-sc%d', %s "
+ "in %s '%s' (got '%s').%s%s%s\n",
+ args[0], args[1], global.tune.nb_stk_ctr-1,
+ trash.area, proxy_type_str(curpx),
+ curpx->id, args[arg],
+ best ? " Did you mean '" : "",
+ best ? best : "",
+ best ? "' maybe ?" : "");
+ return -1;
+ }
+ }
+
+ if (strcmp(args[arg], "if") == 0 || strcmp(args[arg], "unless") == 0) {
+ if ((rule->cond = build_acl_cond(file, line, &curpx->acl, curpx, (const char **)args+arg, err)) == NULL) {
+ memprintf(err,
+ "'%s %s %s' : error detected in %s '%s' while parsing '%s' condition : %s",
+ args[0], args[1], args[2], proxy_type_str(curpx), curpx->id, args[arg], *err);
+ return -1;
+ }
+ }
+ else if (*args[arg]) {
+ memprintf(err,
+ "'%s %s %s' only accepts 'if' or 'unless', in %s '%s' (got '%s')",
+ args[0], args[1], args[2], proxy_type_str(curpx), curpx->id, args[arg]);
+ return -1;
+ }
+ return 0;
+}
+
+/* This function should be called to parse a line starting with the "tcp-response"
+ * keyword.
+ */
+static int tcp_parse_tcp_rep(char **args, int section_type, struct proxy *curpx,
+ const struct proxy *defpx, const char *file, int line,
+ char **err)
+{
+ const char *ptr = NULL;
+ unsigned int val;
+ int warn = 0;
+ int arg;
+ struct act_rule *rule;
+ unsigned int where;
+ const struct acl *acl;
+ const char *kw;
+
+ if (!*args[1]) {
+ memprintf(err, "missing argument for '%s' in %s '%s'",
+ args[0], proxy_type_str(curpx), curpx->id);
+ return -1;
+ }
+
+ if (strcmp(args[1], "inspect-delay") == 0) {
+ if ((curpx == defpx && strlen(defpx->id) == 0) || !(curpx->cap & PR_CAP_BE)) {
+ memprintf(err, "%s %s is only allowed in 'backend' sections or 'defaults' section with a name",
+ args[0], args[1]);
+ return -1;
+ }
+
+ if (!*args[2] || (ptr = parse_time_err(args[2], &val, TIME_UNIT_MS))) {
+ memprintf(err,
+ "'%s %s' expects a positive delay in milliseconds, in %s '%s'",
+ args[0], args[1], proxy_type_str(curpx), curpx->id);
+
+ if (ptr == PARSE_TIME_OVER)
+ memprintf(err, "%s (timer overflow in '%s', maximum value is 2147483647 ms or ~24.8 days)", *err, args[2]);
+ else if (ptr == PARSE_TIME_UNDER)
+ memprintf(err, "%s (timer underflow in '%s', minimum non-null value is 1 ms)", *err, args[2]);
+ else if (ptr)
+ memprintf(err, "%s (unexpected character '%c')", *err, *ptr);
+ return -1;
+ }
+
+ if (curpx->tcp_rep.inspect_delay) {
+ memprintf(err, "ignoring %s %s (was already defined) in %s '%s'",
+ args[0], args[1], proxy_type_str(curpx), curpx->id);
+ return 1;
+ }
+ curpx->tcp_rep.inspect_delay = val;
+ return 0;
+ }
+
+ rule = new_act_rule(ACT_F_TCP_RES_CNT, file, line);
+ if (!rule) {
+ memprintf(err, "parsing [%s:%d] : out of memory", file, line);
+ return -1;
+ }
+ LIST_INIT(&rule->list);
+ arg = 1;
+ where = 0;
+
+ if (strcmp(args[1], "content") == 0) {
+ arg++;
+
+ if (curpx->cap & PR_CAP_FE)
+ where |= SMP_VAL_FE_RES_CNT;
+ if (curpx->cap & PR_CAP_BE)
+ where |= SMP_VAL_BE_RES_CNT;
+ if (tcp_parse_response_rule(args, arg, section_type, curpx, defpx, rule, err, where, file, line) < 0)
+ goto error;
+
+ acl = rule->cond ? acl_cond_conflicts(rule->cond, where) : NULL;
+ if (acl) {
+ if (acl->name && *acl->name)
+ memprintf(err,
+ "acl '%s' will never match in '%s %s' because it only involves keywords that are incompatible with '%s'",
+ acl->name, args[0], args[1], sample_ckp_names(where));
+ else
+ memprintf(err,
+ "anonymous acl will never match in '%s %s' because it uses keyword '%s' which is incompatible with '%s'",
+ args[0], args[1],
+ LIST_ELEM(acl->expr.n, struct acl_expr *, list)->kw,
+ sample_ckp_names(where));
+
+ warn++;
+ }
+ else if (rule->cond && acl_cond_kw_conflicts(rule->cond, where, &acl, &kw)) {
+ if (acl->name && *acl->name)
+ memprintf(err,
+ "acl '%s' involves keyword '%s' which is incompatible with '%s'",
+ acl->name, kw, sample_ckp_names(where));
+ else
+ memprintf(err,
+ "anonymous acl involves keyword '%s' which is incompatible with '%s'",
+ kw, sample_ckp_names(where));
+ warn++;
+ }
+
+ LIST_APPEND(&curpx->tcp_rep.inspect_rules, &rule->list);
+ }
+ else {
+ memprintf(err,
+ "'%s' expects 'inspect-delay' or 'content' in %s '%s' (got '%s')",
+ args[0], proxy_type_str(curpx), curpx->id, args[1]);
+ goto error;
+ }
+
+ return warn;
+ error:
+ free_act_rule(rule);
+ return -1;
+}
+
+
+/* This function should be called to parse a line starting with the "tcp-request"
+ * keyword.
+ */
+static int tcp_parse_tcp_req(char **args, int section_type, struct proxy *curpx,
+ const struct proxy *defpx, const char *file, int line,
+ char **err)
+{
+ const char *ptr = NULL;
+ unsigned int val;
+ int warn = 0;
+ int arg;
+ struct act_rule *rule;
+ unsigned int where;
+ const struct acl *acl;
+ const char *kw;
+
+ if (!*args[1]) {
+ if (curpx == defpx)
+ memprintf(err, "missing argument for '%s' in defaults section", args[0]);
+ else
+ memprintf(err, "missing argument for '%s' in %s '%s'",
+ args[0], proxy_type_str(curpx), curpx->id);
+ return -1;
+ }
+
+ if (strcmp(args[1], "inspect-delay") == 0) {
+ if (curpx == defpx && strlen(defpx->id) == 0) {
+ memprintf(err, "%s %s is not allowed in anonymous 'defaults' sections",
+ args[0], args[1]);
+ return -1;
+ }
+
+ if (!*args[2] || (ptr = parse_time_err(args[2], &val, TIME_UNIT_MS))) {
+ memprintf(err,
+ "'%s %s' expects a positive delay in milliseconds, in %s '%s'",
+ args[0], args[1], proxy_type_str(curpx), curpx->id);
+
+ if (ptr == PARSE_TIME_OVER)
+ memprintf(err, "%s (timer overflow in '%s', maximum value is 2147483647 ms or ~24.8 days)", *err, args[2]);
+ else if (ptr == PARSE_TIME_UNDER)
+ memprintf(err, "%s (timer underflow in '%s', minimum non-null value is 1 ms)", *err, args[2]);
+ else if (ptr)
+ memprintf(err, "%s (unexpected character '%c')", *err, *ptr);
+ return -1;
+ }
+
+ if (curpx->tcp_req.inspect_delay) {
+ memprintf(err, "ignoring %s %s (was already defined) in %s '%s'",
+ args[0], args[1], proxy_type_str(curpx), curpx->id);
+ return 1;
+ }
+ curpx->tcp_req.inspect_delay = val;
+ return 0;
+ }
+
+ rule = new_act_rule(0, file, line);
+ if (!rule) {
+ memprintf(err, "parsing [%s:%d] : out of memory", file, line);
+ return -1;
+ }
+ LIST_INIT(&rule->list);
+ arg = 1;
+ where = 0;
+
+ if (strcmp(args[1], "content") == 0) {
+ arg++;
+
+ if (curpx->cap & PR_CAP_FE)
+ where |= SMP_VAL_FE_REQ_CNT;
+ if (curpx->cap & PR_CAP_BE)
+ where |= SMP_VAL_BE_REQ_CNT;
+ rule->from = ACT_F_TCP_REQ_CNT;
+ if (tcp_parse_request_rule(args, arg, section_type, curpx, defpx, rule, err, where, file, line) < 0)
+ goto error;
+
+ acl = rule->cond ? acl_cond_conflicts(rule->cond, where) : NULL;
+ if (acl) {
+ if (acl->name && *acl->name)
+ memprintf(err,
+ "acl '%s' will never match in '%s %s' because it only involves keywords that are incompatible with '%s'",
+ acl->name, args[0], args[1], sample_ckp_names(where));
+ else
+ memprintf(err,
+ "anonymous acl will never match in '%s %s' because it uses keyword '%s' which is incompatible with '%s'",
+ args[0], args[1],
+ LIST_ELEM(acl->expr.n, struct acl_expr *, list)->kw,
+ sample_ckp_names(where));
+
+ warn++;
+ }
+ else if (rule->cond && acl_cond_kw_conflicts(rule->cond, where, &acl, &kw)) {
+ if (acl->name && *acl->name)
+ memprintf(err,
+ "acl '%s' involves keyword '%s' which is incompatible with '%s'",
+ acl->name, kw, sample_ckp_names(where));
+ else
+ memprintf(err,
+ "anonymous acl involves keyword '%s' which is incompatible with '%s'",
+ kw, sample_ckp_names(where));
+ warn++;
+ }
+
+ /* the following function directly emits the warning */
+ warnif_misplaced_tcp_cont(curpx, file, line, args[0]);
+ LIST_APPEND(&curpx->tcp_req.inspect_rules, &rule->list);
+ }
+ else if (strcmp(args[1], "connection") == 0) {
+ arg++;
+
+ if (!(curpx->cap & PR_CAP_FE)) {
+ memprintf(err, "%s %s is not allowed because %s %s is not a frontend",
+ args[0], args[1], proxy_type_str(curpx), curpx->id);
+ goto error;
+ }
+
+ where |= SMP_VAL_FE_CON_ACC;
+ rule->from = ACT_F_TCP_REQ_CON;
+ if (tcp_parse_request_rule(args, arg, section_type, curpx, defpx, rule, err, where, file, line) < 0)
+ goto error;
+
+ acl = rule->cond ? acl_cond_conflicts(rule->cond, where) : NULL;
+ if (acl) {
+ if (acl->name && *acl->name)
+ memprintf(err,
+ "acl '%s' will never match in '%s %s' because it only involves keywords that are incompatible with '%s'",
+ acl->name, args[0], args[1], sample_ckp_names(where));
+ else
+ memprintf(err,
+ "anonymous acl will never match in '%s %s' because it uses keyword '%s' which is incompatible with '%s'",
+ args[0], args[1],
+ LIST_ELEM(acl->expr.n, struct acl_expr *, list)->kw,
+ sample_ckp_names(where));
+
+ warn++;
+ }
+ else if (rule->cond && acl_cond_kw_conflicts(rule->cond, where, &acl, &kw)) {
+ if (acl->name && *acl->name)
+ memprintf(err,
+ "acl '%s' involves keyword '%s' which is incompatible with '%s'",
+ acl->name, kw, sample_ckp_names(where));
+ else
+ memprintf(err,
+ "anonymous acl involves keyword '%s' which is incompatible with '%s'",
+ kw, sample_ckp_names(where));
+ warn++;
+ }
+
+ /* the following function directly emits the warning */
+ warnif_misplaced_tcp_conn(curpx, file, line, args[0]);
+ LIST_APPEND(&curpx->tcp_req.l4_rules, &rule->list);
+ }
+ else if (strcmp(args[1], "session") == 0) {
+ arg++;
+
+ if (!(curpx->cap & PR_CAP_FE)) {
+ memprintf(err, "%s %s is not allowed because %s %s is not a frontend",
+ args[0], args[1], proxy_type_str(curpx), curpx->id);
+ goto error;
+ }
+
+ where |= SMP_VAL_FE_SES_ACC;
+ rule->from = ACT_F_TCP_REQ_SES;
+ if (tcp_parse_request_rule(args, arg, section_type, curpx, defpx, rule, err, where, file, line) < 0)
+ goto error;
+
+ acl = rule->cond ? acl_cond_conflicts(rule->cond, where) : NULL;
+ if (acl) {
+ if (acl->name && *acl->name)
+ memprintf(err,
+ "acl '%s' will never match in '%s %s' because it only involves keywords that are incompatible with '%s'",
+ acl->name, args[0], args[1], sample_ckp_names(where));
+ else
+ memprintf(err,
+ "anonymous acl will never match in '%s %s' because it uses keyword '%s' which is incompatible with '%s'",
+ args[0], args[1],
+ LIST_ELEM(acl->expr.n, struct acl_expr *, list)->kw,
+ sample_ckp_names(where));
+ warn++;
+ }
+ else if (rule->cond && acl_cond_kw_conflicts(rule->cond, where, &acl, &kw)) {
+ if (acl->name && *acl->name)
+ memprintf(err,
+ "acl '%s' involves keyword '%s' which is incompatible with '%s'",
+ acl->name, kw, sample_ckp_names(where));
+ else
+ memprintf(err,
+ "anonymous acl involves keyword '%s' which is incompatible with '%s'",
+ kw, sample_ckp_names(where));
+ warn++;
+ }
+
+ /* the following function directly emits the warning */
+ warnif_misplaced_tcp_sess(curpx, file, line, args[0]);
+ LIST_APPEND(&curpx->tcp_req.l5_rules, &rule->list);
+ }
+ else {
+ if (curpx == defpx)
+ memprintf(err,
+ "'%s' expects 'inspect-delay', 'connection', or 'content' in defaults section (got '%s')",
+ args[0], args[1]);
+ else
+ memprintf(err,
+ "'%s' expects 'inspect-delay', 'connection', or 'content' in %s '%s' (got '%s')",
+ args[0], proxy_type_str(curpx), curpx->id, args[1]);
+ goto error;
+ }
+
+ return warn;
+ error:
+ free_act_rule(rule);
+ return -1;
+}
+
+static struct cfg_kw_list cfg_kws = {ILH, {
+ { CFG_LISTEN, "tcp-request", tcp_parse_tcp_req },
+ { CFG_LISTEN, "tcp-response", tcp_parse_tcp_rep },
+ { 0, NULL, NULL },
+}};
+
+INITCALL1(STG_REGISTER, cfg_register_keywords, &cfg_kws);
+
+/*
+ * Local variables:
+ * c-indent-level: 8
+ * c-basic-offset: 8
+ * End:
+ */