148 lines
4.7 KiB
C
148 lines
4.7 KiB
C
/*
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* include/proto/session.h
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* This file defines everything related to sessions.
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*
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* Copyright (C) 2000-2010 Willy Tarreau - w@1wt.eu
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation, version 2.1
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* exclusively.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef _PROTO_SESSION_H
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#define _PROTO_SESSION_H
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#include <common/config.h>
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#include <common/memory.h>
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#include <types/session.h>
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#include <proto/freq_ctr.h>
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#include <proto/stick_table.h>
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extern struct pool_head *pool2_session;
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extern struct list sessions;
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int session_accept(struct listener *l, int cfd, struct sockaddr_storage *addr);
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void session_free(struct session *s);
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/* perform minimal intializations, report 0 in case of error, 1 if OK. */
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int init_session();
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void session_process_counters(struct session *s);
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void sess_change_server(struct session *sess, struct server *newsrv);
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struct task *process_session(struct task *t);
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void sess_set_term_flags(struct session *s);
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void default_srv_error(struct session *s, struct stream_interface *si);
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int parse_track_counters(char **args, int *arg,
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int section_type, struct proxy *curpx,
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struct track_ctr_prm *prm,
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struct proxy *defpx, char *err, int errlen);
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/* Remove the refcount from the session to the tracked counters, and clear the
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* pointer to ensure this is only performed once. The caller is responsible for
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* ensuring that the pointer is valid first.
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*/
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static inline void session_store_counters(struct session *s)
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{
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if (s->tracked_counters) {
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void *ptr = stktable_data_ptr(s->tracked_table, s->tracked_counters, STKTABLE_DT_CONN_CUR);
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if (ptr)
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stktable_data_cast(ptr, conn_cur)--;
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}
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s->tracked_counters->ref_cnt--;
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s->tracked_counters = NULL;
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}
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/* Enable tracking of session counters on stksess <ts>. The caller is
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* responsible for ensuring that <t> and <ts> are valid pointers and that no
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* previous tracked_counters was assigned to the session.
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*/
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static inline void session_track_counters(struct session *s, struct stktable *t, struct stksess *ts)
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{
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ts->ref_cnt++;
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s->tracked_table = t;
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s->tracked_counters = ts;
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if (ts) {
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void *ptr;
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ptr = stktable_data_ptr(t, ts, STKTABLE_DT_CONN_CUR);
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if (ptr)
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stktable_data_cast(ptr, conn_cur)++;
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ptr = stktable_data_ptr(t, ts, STKTABLE_DT_CONN_CNT);
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if (ptr)
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stktable_data_cast(ptr, conn_cnt)++;
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ptr = stktable_data_ptr(t, ts, STKTABLE_DT_CONN_RATE);
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if (ptr)
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update_freq_ctr_period(&stktable_data_cast(ptr, conn_rate),
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t->data_arg[STKTABLE_DT_CONN_RATE].u, 1);
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if (tick_isset(t->expire))
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ts->expire = tick_add(now_ms, MS_TO_TICKS(t->expire));
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}
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}
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static void inline trace_term(struct session *s, unsigned int code)
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{
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s->term_trace <<= TT_BIT_SHIFT;
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s->term_trace |= code;
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}
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/* Increase the number of cumulated HTTP requests in the tracked counters */
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static void inline session_inc_http_req_ctr(struct session *s)
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{
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if (s->tracked_counters) {
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void *ptr;
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ptr = stktable_data_ptr(s->tracked_table, s->tracked_counters, STKTABLE_DT_HTTP_REQ_CNT);
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if (ptr)
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stktable_data_cast(ptr, http_req_cnt)++;
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ptr = stktable_data_ptr(s->tracked_table, s->tracked_counters, STKTABLE_DT_HTTP_REQ_RATE);
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if (ptr)
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update_freq_ctr_period(&stktable_data_cast(ptr, http_req_rate),
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s->tracked_table->data_arg[STKTABLE_DT_HTTP_REQ_RATE].u, 1);
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}
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}
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/* Increase the number of cumulated failed HTTP requests in the tracked
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* counters. Only 4xx requests should be counted here so that we can
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* distinguish between errors caused by client behaviour and other ones.
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* Note that even 404 are interesting because they're generally caused by
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* vulnerability scans.
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*/
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static void inline session_inc_http_err_ctr(struct session *s)
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{
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if (s->tracked_counters) {
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void *ptr;
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ptr = stktable_data_ptr(s->tracked_table, s->tracked_counters, STKTABLE_DT_HTTP_ERR_CNT);
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if (ptr)
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stktable_data_cast(ptr, http_err_cnt)++;
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ptr = stktable_data_ptr(s->tracked_table, s->tracked_counters, STKTABLE_DT_HTTP_ERR_RATE);
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if (ptr)
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update_freq_ctr_period(&stktable_data_cast(ptr, http_err_rate),
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s->tracked_table->data_arg[STKTABLE_DT_HTTP_ERR_RATE].u, 1);
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}
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}
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#endif /* _PROTO_SESSION_H */
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/*
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* Local variables:
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* c-indent-level: 8
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* c-basic-offset: 8
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* End:
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*/
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