| /* $Id$ */ |
| /* |
| * Copyright (C) 2003-2007 Benny Prijono <benny@prijono.org> |
| * |
| * 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. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, write to the Free Software |
| * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| */ |
| #include "server.h" |
| |
| #define THIS_FILE "bind_usage.c" |
| |
| static void usage_on_rx_data(pj_stun_usage *usage, |
| void *pkt, |
| pj_size_t pkt_size, |
| const pj_sockaddr_t *src_addr, |
| unsigned src_addr_len); |
| static void usage_on_destroy(pj_stun_usage *usage); |
| static pj_status_t sess_on_send_msg(pj_stun_session *sess, |
| const void *pkt, |
| pj_size_t pkt_size, |
| const pj_sockaddr_t *dst_addr, |
| unsigned addr_len); |
| static pj_status_t sess_on_rx_request(pj_stun_session *sess, |
| const pj_uint8_t *pkt, |
| unsigned pkt_len, |
| const pj_stun_msg *msg, |
| const pj_sockaddr_t *src_addr, |
| unsigned src_addr_len); |
| |
| struct bind_usage |
| { |
| pj_pool_t *pool; |
| pj_stun_usage *usage; |
| pj_stun_session *session; |
| }; |
| |
| |
| PJ_DEF(pj_status_t) pj_stun_bind_usage_create(pj_stun_server *srv, |
| const pj_str_t *ip_addr, |
| unsigned port, |
| pj_stun_usage **p_bu) |
| { |
| pj_pool_t *pool; |
| struct bind_usage *bu; |
| pj_stun_server_info *si; |
| pj_stun_usage_cb usage_cb; |
| pj_stun_session_cb sess_cb; |
| pj_sockaddr_in local_addr; |
| pj_status_t status; |
| |
| si = pj_stun_server_get_info(srv); |
| |
| pool = pj_pool_create(si->pf, "bind%p", 128, 128, NULL); |
| bu = PJ_POOL_ZALLOC_T(pool, struct bind_usage); |
| bu->pool = pool; |
| |
| status = pj_sockaddr_in_init(&local_addr, ip_addr, (pj_uint16_t)port); |
| if (status != PJ_SUCCESS) |
| return status; |
| |
| pj_bzero(&usage_cb, sizeof(usage_cb)); |
| usage_cb.on_rx_data = &usage_on_rx_data; |
| usage_cb.on_destroy = &usage_on_destroy; |
| |
| status = pj_stun_usage_create(srv, "bind%p", &usage_cb, |
| pj_AF_INET(), pj_SOCK_DGRAM(), 0, |
| &local_addr, sizeof(local_addr), |
| &bu->usage); |
| if (status != PJ_SUCCESS) { |
| pj_pool_release(pool); |
| return status; |
| } |
| |
| pj_bzero(&sess_cb, sizeof(sess_cb)); |
| sess_cb.on_send_msg = &sess_on_send_msg; |
| sess_cb.on_rx_request = &sess_on_rx_request; |
| status = pj_stun_session_create(&si->stun_cfg, "bind%p", &sess_cb, |
| PJ_FALSE, &bu->session); |
| if (status != PJ_SUCCESS) { |
| pj_stun_usage_destroy(bu->usage); |
| return status; |
| } |
| |
| pj_stun_usage_set_user_data(bu->usage, bu); |
| pj_stun_session_set_user_data(bu->session, bu); |
| |
| if (p_bu) |
| *p_bu = bu->usage; |
| |
| return PJ_SUCCESS; |
| } |
| |
| |
| static void usage_on_rx_data(pj_stun_usage *usage, |
| void *pkt, |
| pj_size_t pkt_size, |
| const pj_sockaddr_t *src_addr, |
| unsigned src_addr_len) |
| { |
| struct bind_usage *bu; |
| pj_stun_session *session; |
| pj_status_t status; |
| |
| bu = (struct bind_usage*) pj_stun_usage_get_user_data(usage); |
| session = bu->session; |
| |
| /* Handle packet to session */ |
| status = pj_stun_session_on_rx_pkt(session, (pj_uint8_t*)pkt, pkt_size, |
| PJ_STUN_IS_DATAGRAM | PJ_STUN_CHECK_PACKET, |
| NULL, src_addr, src_addr_len); |
| if (status != PJ_SUCCESS) { |
| pj_stun_perror(THIS_FILE, "Error handling incoming packet", status); |
| return; |
| } |
| } |
| |
| |
| static pj_status_t sess_on_send_msg(pj_stun_session *sess, |
| const void *pkt, |
| pj_size_t pkt_size, |
| const pj_sockaddr_t *dst_addr, |
| unsigned addr_len) |
| { |
| struct bind_usage *bu; |
| pj_stun_usage *usage; |
| |
| bu = (struct bind_usage*) pj_stun_session_get_user_data(sess); |
| usage = bu->usage; |
| |
| return pj_stun_usage_sendto(usage, pkt, pkt_size, 0, |
| dst_addr, addr_len); |
| } |
| |
| |
| static pj_status_t sess_on_rx_request(pj_stun_session *sess, |
| const pj_uint8_t *pkt, |
| unsigned pkt_len, |
| const pj_stun_msg *msg, |
| const pj_sockaddr_t *src_addr, |
| unsigned src_addr_len) |
| { |
| pj_stun_tx_data *tdata; |
| pj_status_t status; |
| |
| PJ_UNUSED_ARG(pkt); |
| PJ_UNUSED_ARG(pkt_len); |
| |
| /* Create response */ |
| status = pj_stun_session_create_res(sess, msg, 0, NULL, &tdata); |
| if (status != PJ_SUCCESS) |
| return status; |
| |
| /* Create MAPPED-ADDRESS attribute */ |
| status = pj_stun_msg_add_sockaddr_attr(tdata->pool, tdata->msg, |
| PJ_STUN_ATTR_MAPPED_ADDR, |
| PJ_FALSE, |
| src_addr, src_addr_len); |
| if (status != PJ_SUCCESS) { |
| pj_stun_perror(THIS_FILE, "Error creating response", status); |
| pj_stun_msg_destroy_tdata(sess, tdata); |
| return status; |
| } |
| |
| /* On the presence of magic, create XOR-MAPPED-ADDRESS attribute */ |
| if (msg->hdr.magic == PJ_STUN_MAGIC) { |
| status = |
| pj_stun_msg_add_sockaddr_attr(tdata->pool, tdata->msg, |
| PJ_STUN_ATTR_XOR_MAPPED_ADDR, |
| PJ_TRUE, |
| src_addr, src_addr_len); |
| if (status != PJ_SUCCESS) { |
| pj_stun_perror(THIS_FILE, "Error creating response", status); |
| pj_stun_msg_destroy_tdata(sess, tdata); |
| return status; |
| } |
| } |
| |
| /* Send */ |
| status = pj_stun_session_send_msg(sess, PJ_TRUE, |
| src_addr, src_addr_len, tdata); |
| return status; |
| |
| } |
| |
| static void usage_on_destroy(pj_stun_usage *usage) |
| { |
| struct bind_usage *bu; |
| |
| bu = (struct bind_usage*) pj_stun_usage_get_user_data(usage); |
| if (bu==NULL) |
| return; |
| |
| pj_stun_session_destroy(bu->session); |
| pj_pool_release(bu->pool); |
| } |