Tristan Matthews | 0a329cc | 2013-07-17 13:20:14 -0400 | [diff] [blame] | 1 | /* $Id$ */ |
| 2 | /* |
| 3 | * Copyright (C) 2008-2011 Teluu Inc. (http://www.teluu.com) |
| 4 | * Copyright (C) 2003-2008 Benny Prijono <benny@prijono.org> |
| 5 | * |
| 6 | * This program is free software; you can redistribute it and/or modify |
| 7 | * it under the terms of the GNU General Public License as published by |
| 8 | * the Free Software Foundation; either version 2 of the License, or |
| 9 | * (at your option) any later version. |
| 10 | * |
| 11 | * This program is distributed in the hope that it will be useful, |
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | * GNU General Public License for more details. |
| 15 | * |
| 16 | * You should have received a copy of the GNU General Public License |
| 17 | * along with this program; if not, write to the Free Software |
| 18 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 19 | */ |
| 20 | #include <pjsip/sip_util.h> |
| 21 | #include <pjsip/sip_module.h> |
| 22 | #include <pjsip/sip_endpoint.h> |
| 23 | #include <pjsip/sip_transaction.h> |
| 24 | #include <pjsip/sip_event.h> |
| 25 | #include <pjsip/sip_errno.h> |
| 26 | #include <pj/assert.h> |
| 27 | #include <pj/log.h> |
| 28 | #include <pj/pool.h> |
| 29 | #include <pj/string.h> |
| 30 | |
| 31 | struct tsx_data |
| 32 | { |
| 33 | void *token; |
| 34 | void (*cb)(void*, pjsip_event*); |
| 35 | }; |
| 36 | |
| 37 | static void mod_util_on_tsx_state(pjsip_transaction*, pjsip_event*); |
| 38 | |
| 39 | /* This module will be registered in pjsip_endpt.c */ |
| 40 | |
| 41 | pjsip_module mod_stateful_util = |
| 42 | { |
| 43 | NULL, NULL, /* prev, next. */ |
| 44 | { "mod-stateful-util", 17 }, /* Name. */ |
| 45 | -1, /* Id */ |
| 46 | PJSIP_MOD_PRIORITY_APPLICATION, /* Priority */ |
| 47 | NULL, /* load() */ |
| 48 | NULL, /* start() */ |
| 49 | NULL, /* stop() */ |
| 50 | NULL, /* unload() */ |
| 51 | NULL, /* on_rx_request() */ |
| 52 | NULL, /* on_rx_response() */ |
| 53 | NULL, /* on_tx_request. */ |
| 54 | NULL, /* on_tx_response() */ |
| 55 | &mod_util_on_tsx_state, /* on_tsx_state() */ |
| 56 | }; |
| 57 | |
| 58 | static void mod_util_on_tsx_state(pjsip_transaction *tsx, pjsip_event *event) |
| 59 | { |
| 60 | struct tsx_data *tsx_data; |
| 61 | |
| 62 | /* Check if the module has been unregistered (see ticket #1535) and also |
| 63 | * verify the event type. |
| 64 | */ |
| 65 | if (mod_stateful_util.id < 0 || event->type != PJSIP_EVENT_TSX_STATE) |
| 66 | return; |
| 67 | |
| 68 | tsx_data = (struct tsx_data*) tsx->mod_data[mod_stateful_util.id]; |
| 69 | if (tsx_data == NULL) |
| 70 | return; |
| 71 | |
| 72 | if (tsx->status_code < 200) |
| 73 | return; |
| 74 | |
| 75 | /* Call the callback, if any, and prevent the callback to be called again |
| 76 | * by clearing the transaction's module_data. |
| 77 | */ |
| 78 | tsx->mod_data[mod_stateful_util.id] = NULL; |
| 79 | |
| 80 | if (tsx_data->cb) { |
| 81 | (*tsx_data->cb)(tsx_data->token, event); |
| 82 | } |
| 83 | } |
| 84 | |
| 85 | |
| 86 | PJ_DEF(pj_status_t) pjsip_endpt_send_request( pjsip_endpoint *endpt, |
| 87 | pjsip_tx_data *tdata, |
| 88 | pj_int32_t timeout, |
| 89 | void *token, |
| 90 | pjsip_endpt_send_callback cb) |
| 91 | { |
| 92 | pjsip_transaction *tsx; |
| 93 | struct tsx_data *tsx_data; |
| 94 | pj_status_t status; |
| 95 | |
| 96 | PJ_ASSERT_RETURN(endpt && tdata && (timeout==-1 || timeout>0), PJ_EINVAL); |
| 97 | |
| 98 | /* Check that transaction layer module is registered to endpoint */ |
| 99 | PJ_ASSERT_RETURN(mod_stateful_util.id != -1, PJ_EINVALIDOP); |
| 100 | |
| 101 | PJ_UNUSED_ARG(timeout); |
| 102 | |
| 103 | status = pjsip_tsx_create_uac(&mod_stateful_util, tdata, &tsx); |
| 104 | if (status != PJ_SUCCESS) { |
| 105 | pjsip_tx_data_dec_ref(tdata); |
| 106 | return status; |
| 107 | } |
| 108 | |
| 109 | pjsip_tsx_set_transport(tsx, &tdata->tp_sel); |
| 110 | |
| 111 | tsx_data = PJ_POOL_ALLOC_T(tsx->pool, struct tsx_data); |
| 112 | tsx_data->token = token; |
| 113 | tsx_data->cb = cb; |
| 114 | |
| 115 | tsx->mod_data[mod_stateful_util.id] = tsx_data; |
| 116 | |
| 117 | status = pjsip_tsx_send_msg(tsx, NULL); |
| 118 | if (status != PJ_SUCCESS) |
| 119 | pjsip_tx_data_dec_ref(tdata); |
| 120 | |
| 121 | return status; |
| 122 | } |
| 123 | |
| 124 | |
| 125 | /* |
| 126 | * Send response statefully. |
| 127 | */ |
| 128 | PJ_DEF(pj_status_t) pjsip_endpt_respond( pjsip_endpoint *endpt, |
| 129 | pjsip_module *tsx_user, |
| 130 | pjsip_rx_data *rdata, |
| 131 | int st_code, |
| 132 | const pj_str_t *st_text, |
| 133 | const pjsip_hdr *hdr_list, |
| 134 | const pjsip_msg_body *body, |
| 135 | pjsip_transaction **p_tsx ) |
| 136 | { |
| 137 | pj_status_t status; |
| 138 | pjsip_tx_data *tdata; |
| 139 | pjsip_transaction *tsx; |
| 140 | |
| 141 | /* Validate arguments. */ |
| 142 | PJ_ASSERT_RETURN(endpt && rdata, PJ_EINVAL); |
| 143 | |
| 144 | if (p_tsx) *p_tsx = NULL; |
| 145 | |
| 146 | /* Create response message */ |
| 147 | status = pjsip_endpt_create_response( endpt, rdata, st_code, st_text, |
| 148 | &tdata); |
| 149 | if (status != PJ_SUCCESS) |
| 150 | return status; |
| 151 | |
| 152 | /* Add the message headers, if any */ |
| 153 | if (hdr_list) { |
| 154 | const pjsip_hdr *hdr = hdr_list->next; |
| 155 | while (hdr != hdr_list) { |
| 156 | pjsip_msg_add_hdr(tdata->msg, (pjsip_hdr*) |
| 157 | pjsip_hdr_clone(tdata->pool, hdr) ); |
| 158 | hdr = hdr->next; |
| 159 | } |
| 160 | } |
| 161 | |
| 162 | /* Add the message body, if any. */ |
| 163 | if (body) { |
| 164 | tdata->msg->body = pjsip_msg_body_clone( tdata->pool, body ); |
| 165 | if (tdata->msg->body == NULL) { |
| 166 | pjsip_tx_data_dec_ref(tdata); |
| 167 | return status; |
| 168 | } |
| 169 | } |
| 170 | |
| 171 | /* Create UAS transaction. */ |
| 172 | status = pjsip_tsx_create_uas(tsx_user, rdata, &tsx); |
| 173 | if (status != PJ_SUCCESS) { |
| 174 | pjsip_tx_data_dec_ref(tdata); |
| 175 | return status; |
| 176 | } |
| 177 | |
| 178 | /* Feed the request to the transaction. */ |
| 179 | pjsip_tsx_recv_msg(tsx, rdata); |
| 180 | |
| 181 | /* Send the message. */ |
| 182 | status = pjsip_tsx_send_msg(tsx, tdata); |
| 183 | if (status != PJ_SUCCESS) { |
| 184 | pjsip_tx_data_dec_ref(tdata); |
| 185 | } else if (p_tsx) { |
| 186 | *p_tsx = tsx; |
| 187 | } |
| 188 | |
| 189 | return status; |
| 190 | } |
| 191 | |
| 192 | |