Benny Prijono | 7cd1622 | 2007-03-05 00:58:24 +0000 | [diff] [blame] | 1 | /* $Id$ */ |
| 2 | /* |
| 3 | * Copyright (C) 2003-2005 Benny Prijono <benny@prijono.org> |
| 4 | * |
| 5 | * This program is free software; you can redistribute it and/or modify |
| 6 | * it under the terms of the GNU General Public License as published by |
| 7 | * the Free Software Foundation; either version 2 of the License, or |
| 8 | * (at your option) any later version. |
| 9 | * |
| 10 | * This program is distributed in the hope that it will be useful, |
| 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 13 | * GNU General Public License for more details. |
| 14 | * |
| 15 | * You should have received a copy of the GNU General Public License |
| 16 | * along with this program; if not, write to the Free Software |
| 17 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 18 | */ |
| 19 | #include "server.h" |
| 20 | |
| 21 | #define THIS_FILE "bind_usage.c" |
| 22 | |
| 23 | static void usage_on_rx_data(pj_stun_usage *usage, |
| 24 | void *pkt, |
| 25 | pj_size_t pkt_size, |
| 26 | const pj_sockaddr_t *src_addr, |
| 27 | unsigned src_addr_len); |
Benny Prijono | e631558 | 2007-03-08 18:58:04 +0000 | [diff] [blame] | 28 | static void usage_on_destroy(pj_stun_usage *usage); |
Benny Prijono | 7cd1622 | 2007-03-05 00:58:24 +0000 | [diff] [blame] | 29 | static pj_status_t sess_on_send_msg(pj_stun_session *sess, |
| 30 | const void *pkt, |
| 31 | pj_size_t pkt_size, |
| 32 | const pj_sockaddr_t *dst_addr, |
| 33 | unsigned addr_len); |
| 34 | static pj_status_t sess_on_rx_request(pj_stun_session *sess, |
| 35 | const pj_uint8_t *pkt, |
| 36 | unsigned pkt_len, |
| 37 | const pj_stun_msg *msg, |
| 38 | const pj_sockaddr_t *src_addr, |
| 39 | unsigned src_addr_len); |
| 40 | |
Benny Prijono | e631558 | 2007-03-08 18:58:04 +0000 | [diff] [blame] | 41 | struct bind_usage |
| 42 | { |
| 43 | pj_pool_t *pool; |
| 44 | pj_stun_usage *usage; |
| 45 | pj_stun_session *session; |
| 46 | }; |
| 47 | |
| 48 | |
Benny Prijono | 7cd1622 | 2007-03-05 00:58:24 +0000 | [diff] [blame] | 49 | PJ_DEF(pj_status_t) pj_stun_bind_usage_create(pj_stun_server *srv, |
| 50 | const pj_str_t *ip_addr, |
| 51 | unsigned port, |
| 52 | pj_stun_usage **p_bu) |
| 53 | { |
Benny Prijono | e631558 | 2007-03-08 18:58:04 +0000 | [diff] [blame] | 54 | pj_pool_t *pool; |
| 55 | struct bind_usage *bu; |
Benny Prijono | 7cd1622 | 2007-03-05 00:58:24 +0000 | [diff] [blame] | 56 | pj_stun_server_info *si; |
Benny Prijono | 7cd1622 | 2007-03-05 00:58:24 +0000 | [diff] [blame] | 57 | pj_stun_usage_cb usage_cb; |
| 58 | pj_stun_session_cb sess_cb; |
| 59 | pj_sockaddr_in local_addr; |
| 60 | pj_status_t status; |
| 61 | |
| 62 | si = pj_stun_server_get_info(srv); |
| 63 | |
Benny Prijono | e631558 | 2007-03-08 18:58:04 +0000 | [diff] [blame] | 64 | pool = pj_pool_create(si->pf, "bind%p", 128, 128, NULL); |
| 65 | bu = PJ_POOL_ZALLOC_T(pool, struct bind_usage); |
| 66 | bu->pool = pool; |
| 67 | |
Benny Prijono | 7cd1622 | 2007-03-05 00:58:24 +0000 | [diff] [blame] | 68 | status = pj_sockaddr_in_init(&local_addr, ip_addr, (pj_uint16_t)port); |
| 69 | if (status != PJ_SUCCESS) |
| 70 | return status; |
| 71 | |
| 72 | pj_bzero(&usage_cb, sizeof(usage_cb)); |
| 73 | usage_cb.on_rx_data = &usage_on_rx_data; |
Benny Prijono | e631558 | 2007-03-08 18:58:04 +0000 | [diff] [blame] | 74 | usage_cb.on_destroy = &usage_on_destroy; |
Benny Prijono | 7cd1622 | 2007-03-05 00:58:24 +0000 | [diff] [blame] | 75 | |
| 76 | status = pj_stun_usage_create(srv, "bind%p", &usage_cb, |
| 77 | PJ_AF_INET, PJ_SOCK_DGRAM, 0, |
| 78 | &local_addr, sizeof(local_addr), |
Benny Prijono | e631558 | 2007-03-08 18:58:04 +0000 | [diff] [blame] | 79 | &bu->usage); |
| 80 | if (status != PJ_SUCCESS) { |
| 81 | pj_pool_release(pool); |
Benny Prijono | 7cd1622 | 2007-03-05 00:58:24 +0000 | [diff] [blame] | 82 | return status; |
Benny Prijono | e631558 | 2007-03-08 18:58:04 +0000 | [diff] [blame] | 83 | } |
Benny Prijono | 7cd1622 | 2007-03-05 00:58:24 +0000 | [diff] [blame] | 84 | |
| 85 | pj_bzero(&sess_cb, sizeof(sess_cb)); |
| 86 | sess_cb.on_send_msg = &sess_on_send_msg; |
| 87 | sess_cb.on_rx_request = &sess_on_rx_request; |
Benny Prijono | b01897b | 2007-03-18 17:39:27 +0000 | [diff] [blame] | 88 | status = pj_stun_session_create(si->cfg, "bind%p", &sess_cb, PJ_FALSE, |
Benny Prijono | e631558 | 2007-03-08 18:58:04 +0000 | [diff] [blame] | 89 | &bu->session); |
Benny Prijono | 7cd1622 | 2007-03-05 00:58:24 +0000 | [diff] [blame] | 90 | if (status != PJ_SUCCESS) { |
Benny Prijono | e631558 | 2007-03-08 18:58:04 +0000 | [diff] [blame] | 91 | pj_stun_usage_destroy(bu->usage); |
Benny Prijono | 7cd1622 | 2007-03-05 00:58:24 +0000 | [diff] [blame] | 92 | return status; |
| 93 | } |
| 94 | |
Benny Prijono | e631558 | 2007-03-08 18:58:04 +0000 | [diff] [blame] | 95 | pj_stun_usage_set_user_data(bu->usage, bu); |
| 96 | pj_stun_session_set_user_data(bu->session, bu); |
Benny Prijono | 7cd1622 | 2007-03-05 00:58:24 +0000 | [diff] [blame] | 97 | |
Benny Prijono | e631558 | 2007-03-08 18:58:04 +0000 | [diff] [blame] | 98 | if (p_bu) |
| 99 | *p_bu = bu->usage; |
Benny Prijono | 7cd1622 | 2007-03-05 00:58:24 +0000 | [diff] [blame] | 100 | |
| 101 | return PJ_SUCCESS; |
| 102 | } |
| 103 | |
| 104 | |
| 105 | static void usage_on_rx_data(pj_stun_usage *usage, |
| 106 | void *pkt, |
| 107 | pj_size_t pkt_size, |
| 108 | const pj_sockaddr_t *src_addr, |
| 109 | unsigned src_addr_len) |
| 110 | { |
Benny Prijono | e631558 | 2007-03-08 18:58:04 +0000 | [diff] [blame] | 111 | struct bind_usage *bu; |
Benny Prijono | 7cd1622 | 2007-03-05 00:58:24 +0000 | [diff] [blame] | 112 | pj_stun_session *session; |
| 113 | pj_status_t status; |
| 114 | |
Benny Prijono | e631558 | 2007-03-08 18:58:04 +0000 | [diff] [blame] | 115 | bu = (struct bind_usage*) pj_stun_usage_get_user_data(usage); |
| 116 | session = bu->session; |
Benny Prijono | 7cd1622 | 2007-03-05 00:58:24 +0000 | [diff] [blame] | 117 | |
| 118 | /* Handle packet to session */ |
| 119 | status = pj_stun_session_on_rx_pkt(session, (pj_uint8_t*)pkt, pkt_size, |
| 120 | PJ_STUN_IS_DATAGRAM | PJ_STUN_CHECK_PACKET, |
| 121 | NULL, src_addr, src_addr_len); |
| 122 | if (status != PJ_SUCCESS) { |
| 123 | pj_stun_perror(THIS_FILE, "Error handling incoming packet", status); |
| 124 | return; |
| 125 | } |
| 126 | } |
| 127 | |
| 128 | |
| 129 | static pj_status_t sess_on_send_msg(pj_stun_session *sess, |
| 130 | const void *pkt, |
| 131 | pj_size_t pkt_size, |
| 132 | const pj_sockaddr_t *dst_addr, |
| 133 | unsigned addr_len) |
| 134 | { |
Benny Prijono | e631558 | 2007-03-08 18:58:04 +0000 | [diff] [blame] | 135 | struct bind_usage *bu; |
Benny Prijono | 7cd1622 | 2007-03-05 00:58:24 +0000 | [diff] [blame] | 136 | pj_stun_usage *usage; |
| 137 | |
Benny Prijono | e631558 | 2007-03-08 18:58:04 +0000 | [diff] [blame] | 138 | bu = (struct bind_usage*) pj_stun_session_get_user_data(sess); |
| 139 | usage = bu->usage; |
Benny Prijono | 7cd1622 | 2007-03-05 00:58:24 +0000 | [diff] [blame] | 140 | |
| 141 | return pj_stun_usage_sendto(usage, pkt, pkt_size, 0, |
| 142 | dst_addr, addr_len); |
| 143 | } |
| 144 | |
| 145 | |
| 146 | static pj_status_t sess_on_rx_request(pj_stun_session *sess, |
| 147 | const pj_uint8_t *pkt, |
| 148 | unsigned pkt_len, |
| 149 | const pj_stun_msg *msg, |
| 150 | const pj_sockaddr_t *src_addr, |
| 151 | unsigned src_addr_len) |
| 152 | { |
| 153 | pj_stun_tx_data *tdata; |
| 154 | pj_status_t status; |
| 155 | |
| 156 | PJ_UNUSED_ARG(pkt); |
| 157 | PJ_UNUSED_ARG(pkt_len); |
| 158 | |
| 159 | /* Create response */ |
| 160 | status = pj_stun_session_create_response(sess, msg, 0, NULL, &tdata); |
| 161 | if (status != PJ_SUCCESS) |
| 162 | return status; |
| 163 | |
| 164 | /* Create MAPPED-ADDRESS attribute */ |
Benny Prijono | d597174 | 2007-03-10 23:15:36 +0000 | [diff] [blame] | 165 | status = pj_stun_msg_add_sockaddr_attr(tdata->pool, tdata->msg, |
| 166 | PJ_STUN_ATTR_MAPPED_ADDR, |
| 167 | PJ_FALSE, |
| 168 | src_addr, src_addr_len); |
Benny Prijono | 7cd1622 | 2007-03-05 00:58:24 +0000 | [diff] [blame] | 169 | if (status != PJ_SUCCESS) { |
| 170 | pj_stun_perror(THIS_FILE, "Error creating response", status); |
| 171 | pj_stun_msg_destroy_tdata(sess, tdata); |
| 172 | return status; |
| 173 | } |
| 174 | |
| 175 | /* On the presence of magic, create XOR-MAPPED-ADDRESS attribute */ |
| 176 | if (msg->hdr.magic == PJ_STUN_MAGIC) { |
| 177 | status = |
Benny Prijono | d597174 | 2007-03-10 23:15:36 +0000 | [diff] [blame] | 178 | pj_stun_msg_add_sockaddr_attr(tdata->pool, tdata->msg, |
| 179 | PJ_STUN_ATTR_XOR_MAPPED_ADDR, |
| 180 | PJ_TRUE, |
| 181 | src_addr, src_addr_len); |
Benny Prijono | 7cd1622 | 2007-03-05 00:58:24 +0000 | [diff] [blame] | 182 | if (status != PJ_SUCCESS) { |
| 183 | pj_stun_perror(THIS_FILE, "Error creating response", status); |
| 184 | pj_stun_msg_destroy_tdata(sess, tdata); |
| 185 | return status; |
| 186 | } |
| 187 | } |
| 188 | |
| 189 | /* Send */ |
| 190 | status = pj_stun_session_send_msg(sess, PJ_TRUE, |
| 191 | src_addr, src_addr_len, tdata); |
| 192 | return status; |
| 193 | |
| 194 | } |
| 195 | |
Benny Prijono | e631558 | 2007-03-08 18:58:04 +0000 | [diff] [blame] | 196 | static void usage_on_destroy(pj_stun_usage *usage) |
| 197 | { |
| 198 | struct bind_usage *bu; |
| 199 | |
| 200 | bu = (struct bind_usage*) pj_stun_usage_get_user_data(usage); |
| 201 | if (bu==NULL) |
| 202 | return; |
| 203 | |
| 204 | pj_stun_session_destroy(bu->session); |
| 205 | pj_pool_release(bu->pool); |
| 206 | } |