diff options
Diffstat (limited to 'src/tcp_rules.c')
| -rw-r--r-- | src/tcp_rules.c | 1428 |
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: + */ |