Benny Prijono | e0312a7 | 2005-11-18 00:16:43 +0000 | [diff] [blame^] | 1 | /* $Id$ */
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Benny Prijono | e722461 | 2005-11-13 19:40:44 +0000 | [diff] [blame] | 2 | /*
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Benny Prijono | e0312a7 | 2005-11-18 00:16:43 +0000 | [diff] [blame^] | 3 | * Copyright (C) 2003-2006 Benny Prijono <benny@prijono.org>
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Benny Prijono | e722461 | 2005-11-13 19:40:44 +0000 | [diff] [blame] | 4 | *
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Benny Prijono | e0312a7 | 2005-11-18 00:16:43 +0000 | [diff] [blame^] | 5 | * This program is free software; you can redistribute it and/or modify
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| 6 | * it under the terms of the GNU General Public License as published by
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| 7 | * the Free Software Foundation; either version 2 of the License, or
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| 8 | * (at your option) any later version.
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Benny Prijono | e722461 | 2005-11-13 19:40:44 +0000 | [diff] [blame] | 9 | *
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Benny Prijono | e0312a7 | 2005-11-18 00:16:43 +0000 | [diff] [blame^] | 10 | * This program is distributed in the hope that it will be useful,
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Benny Prijono | e722461 | 2005-11-13 19:40:44 +0000 | [diff] [blame] | 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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Benny Prijono | e0312a7 | 2005-11-18 00:16:43 +0000 | [diff] [blame^] | 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 13 | * GNU General Public License for more details.
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Benny Prijono | e722461 | 2005-11-13 19:40:44 +0000 | [diff] [blame] | 14 | *
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Benny Prijono | e0312a7 | 2005-11-18 00:16:43 +0000 | [diff] [blame^] | 15 | * You should have received a copy of the GNU General Public License
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| 16 | * along with this program; if not, write to the Free Software
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| 17 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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Benny Prijono | e722461 | 2005-11-13 19:40:44 +0000 | [diff] [blame] | 18 | */
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| 19 | #include <pjsip_simple/presence.h>
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| 20 | #include <pjsip/sip_transport.h>
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| 21 | #include <pj/pool.h>
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| 22 | #include <pj/string.h>
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| 23 | #include <pj/guid.h>
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| 24 | #include <pj/os.h>
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| 25 | #include <stdio.h>
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| 26 |
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| 27 | /* Forward declarations. */
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| 28 | static void on_query_subscribe(pjsip_rx_data *rdata, int *status);
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| 29 | static void on_subscribe(pjsip_event_sub *sub, pjsip_rx_data *rdata,
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| 30 | pjsip_event_sub_cb **cb, int *expires);
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| 31 | static void on_sub_terminated(pjsip_event_sub *sub, const pj_str_t *reason);
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| 32 | static void on_sub_received_refresh(pjsip_event_sub *sub, pjsip_rx_data *rdata);
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| 33 | static void on_received_notify(pjsip_event_sub *sub, pjsip_rx_data *rdata);
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| 34 |
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| 35 | /* Some string constants. */
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| 36 | static pj_str_t PRESENCE_EVENT = { "presence", 8 };
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| 37 |
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| 38 | /* Accept types. */
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| 39 | static pj_str_t accept_names[] = {
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| 40 | { "application/pidf+xml", 20 },
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| 41 | { "application/xpidf+xml", 21 }
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| 42 | };
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| 43 | static pjsip_media_type accept_types[] = {
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| 44 | {
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| 45 | { "application", 11 },
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| 46 | { "pidf+xml", 8 }
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| 47 | },
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| 48 | {
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| 49 | { "application", 11 },
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| 50 | { "xpidf+xml", 9 }
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| 51 | }
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| 52 | };
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| 53 |
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| 54 | /* Callback that is registered by application. */
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| 55 | static pjsip_presence_cb cb;
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| 56 |
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| 57 | /* Package callback to be register to event_notify */
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| 58 | static pjsip_event_sub_pkg_cb pkg_cb = { &on_query_subscribe,
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| 59 | &on_subscribe };
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| 60 |
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| 61 | /* Global/static callback to be registered to event_notify */
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| 62 | static pjsip_event_sub_cb sub_cb = { &on_sub_terminated,
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| 63 | &on_sub_received_refresh,
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| 64 | NULL,
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| 65 | &on_received_notify,
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| 66 | NULL };
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| 67 |
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| 68 | /*
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| 69 | * Initialize presence module.
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| 70 | * This will register event package "presence" to event framework.
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| 71 | */
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| 72 | PJ_DEF(void) pjsip_presence_init(const pjsip_presence_cb *pcb)
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| 73 | {
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| 74 | pj_memcpy(&cb, pcb, sizeof(*pcb));
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| 75 | pjsip_event_sub_register_pkg( &PRESENCE_EVENT,
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| 76 | sizeof(accept_names)/sizeof(accept_names[0]),
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| 77 | accept_names,
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| 78 | &pkg_cb);
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| 79 | }
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| 80 |
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| 81 | /*
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| 82 | * Create presence subscription.
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| 83 | */
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| 84 | PJ_DEF(pjsip_presentity*) pjsip_presence_create( pjsip_endpoint *endpt,
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| 85 | const pj_str_t *local_url,
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| 86 | const pj_str_t *remote_url,
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| 87 | int expires,
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| 88 | void *user_data )
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| 89 | {
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| 90 | pjsip_event_sub *sub;
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| 91 | pjsip_presentity *pres;
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| 92 |
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| 93 | if (expires < 0)
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| 94 | expires = 300;
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| 95 |
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| 96 | /* Create event subscription */
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| 97 | sub = pjsip_event_sub_create(endpt, local_url, remote_url, &PRESENCE_EVENT,
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| 98 | expires,
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| 99 | sizeof(accept_names)/sizeof(accept_names[0]),
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| 100 | accept_names,
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| 101 | NULL, &sub_cb);
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| 102 | if (!sub)
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| 103 | return NULL;
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| 104 |
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| 105 | /* Allocate presence descriptor. */
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| 106 | pres = pj_pool_calloc(sub->pool, 1, sizeof(*pres));
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| 107 | pres->sub = sub;
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| 108 | pres->user_data = user_data;
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| 109 | sub->user_data = pres;
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| 110 |
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| 111 | return pres;
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| 112 | }
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| 113 |
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| 114 | /*
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| 115 | * Send SUBSCRIBE.
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| 116 | */
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| 117 | PJ_DEF(pj_status_t) pjsip_presence_subscribe( pjsip_presentity *pres )
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| 118 | {
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| 119 | return pjsip_event_sub_subscribe( pres->sub );
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| 120 | }
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| 121 |
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| 122 | /*
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| 123 | * Set credentials to be used for outgoing requests.
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| 124 | */
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| 125 | PJ_DEF(pj_status_t) pjsip_presence_set_credentials( pjsip_presentity *pres,
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| 126 | int count,
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| 127 | const pjsip_cred_info cred[])
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| 128 | {
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| 129 | return pjsip_event_sub_set_credentials(pres->sub, count, cred);
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| 130 | }
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| 131 |
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| 132 | /*
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| 133 | * Set route-set.
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| 134 | */
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| 135 | PJ_DEF(pj_status_t) pjsip_presence_set_route_set( pjsip_presentity *pres,
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| 136 | const pjsip_route_hdr *hdr )
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| 137 | {
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| 138 | return pjsip_event_sub_set_route_set( pres->sub, hdr );
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| 139 | }
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| 140 |
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| 141 | /*
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| 142 | * Unsubscribe.
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| 143 | */
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| 144 | PJ_DEF(pj_status_t) pjsip_presence_unsubscribe( pjsip_presentity *pres )
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| 145 | {
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| 146 | return pjsip_event_sub_unsubscribe(pres->sub);
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| 147 | }
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| 148 |
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| 149 | /*
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| 150 | * This is the pjsip_msg_body callback to print XML body.
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| 151 | */
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| 152 | static int print_xml(pjsip_msg_body *body, char *buf, pj_size_t size)
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| 153 | {
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| 154 | return pj_xml_print( body->data, buf, size, PJ_TRUE );
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| 155 | }
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| 156 |
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| 157 | /*
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| 158 | * Create and initialize PIDF document and msg body (notifier only).
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| 159 | */
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| 160 | static pj_status_t init_presence_info( pjsip_presentity *pres )
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| 161 | {
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| 162 | pj_str_t uri;
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| 163 | pj_pool_t *pool = pres->sub->pool;
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| 164 | char tmp[PJSIP_MAX_URL_SIZE];
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| 165 | pjpidf_tuple *tuple;
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| 166 | const pjsip_media_type *content_type = NULL;
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| 167 |
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| 168 | pj_assert(pres->uas_body == NULL);
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| 169 |
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| 170 | /* Make entity_id */
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| 171 | uri.ptr = tmp;
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| 172 | uri.slen = pjsip_uri_print(PJSIP_URI_IN_REQ_URI, pres->sub->from->uri,
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| 173 | tmp, sizeof(tmp));
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| 174 | if (uri.slen < 0)
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| 175 | return -1;
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| 176 |
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| 177 | if (pres->pres_type == PJSIP_PRES_TYPE_PIDF) {
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| 178 | pj_str_t s;
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| 179 |
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| 180 | /* Create <presence>. */
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| 181 | pres->uas_data.pidf = pjpidf_create(pool, &s);
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| 182 |
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| 183 | /* Create <tuple> */
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| 184 | pj_create_unique_string(pool, &s);
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| 185 | tuple = pjpidf_pres_add_tuple(pool, pres->uas_data.pidf, &s);
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| 186 |
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| 187 | /* Set <contact> */
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| 188 | s.ptr = tmp;
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| 189 | s.slen = pjsip_uri_print(PJSIP_URI_IN_REQ_URI, pres->sub->contact->uri, tmp, sizeof(tmp));
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| 190 | if (s.slen < 0)
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| 191 | return -1;
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| 192 | pjpidf_tuple_set_contact(pool, tuple, &s);
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| 193 |
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| 194 | /* Content-Type */
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| 195 | content_type = &accept_types[PJSIP_PRES_TYPE_PIDF];
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| 196 |
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| 197 | } else if (pres->pres_type == PJSIP_PRES_TYPE_XPIDF) {
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| 198 |
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| 199 | /* Create XPIDF */
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| 200 | pres->uas_data.xpidf = pjxpidf_create(pool, &uri);
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| 201 |
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| 202 | /* Content-Type. */
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| 203 | content_type = &accept_types[PJSIP_PRES_TYPE_XPIDF];
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| 204 | }
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| 205 |
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| 206 | /* Create message body */
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| 207 | pres->uas_body = pj_pool_alloc(pool, sizeof(pjsip_msg_body));
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| 208 | pres->uas_body->content_type = *content_type;
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| 209 | pres->uas_body->data = pres->uas_data.pidf;
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| 210 | pres->uas_body->len = 0;
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| 211 | pres->uas_body->print_body = &print_xml;
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| 212 |
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| 213 | return 0;
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| 214 | }
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| 215 |
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| 216 | /*
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| 217 | * Send NOTIFY and set subscription state.
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| 218 | */
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| 219 | PJ_DEF(pj_status_t) pjsip_presence_notify( pjsip_presentity *pres,
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| 220 | pjsip_event_sub_state state,
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| 221 | pj_bool_t is_online )
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| 222 | {
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| 223 | pj_str_t reason = { "", 0 };
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| 224 |
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| 225 | if (pres->uas_data.pidf == NULL) {
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| 226 | if (init_presence_info(pres) != 0)
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| 227 | return -1;
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| 228 | }
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| 229 |
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| 230 | /* Update basic status in PIDF/XPIDF document. */
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| 231 | if (pres->pres_type == PJSIP_PRES_TYPE_PIDF) {
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| 232 | pjpidf_tuple *first;
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| 233 | pjpidf_status *status;
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| 234 | pj_time_val now;
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| 235 | pj_parsed_time pnow;
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| 236 |
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| 237 | first = pjpidf_op.pres.get_first_tuple(pres->uas_data.pidf);
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| 238 | pj_assert(first);
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| 239 | status = pjpidf_op.tuple.get_status(first);
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| 240 | pj_assert(status);
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| 241 | pjpidf_op.status.set_basic_open(status, is_online);
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| 242 |
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| 243 | /* Update timestamp. */
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| 244 | if (pres->timestamp.ptr == 0) {
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| 245 | pres->timestamp.ptr = pj_pool_alloc(pres->sub->pool, 24);
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| 246 | }
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| 247 | pj_gettimeofday(&now);
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| 248 | pj_time_decode(&now, &pnow);
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| 249 | pres->timestamp.slen = sprintf(pres->timestamp.ptr,
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| 250 | "%04d-%02d-%02dT%02d:%02d:%02dZ",
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| 251 | pnow.year, pnow.mon, pnow.day,
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| 252 | pnow.hour, pnow.min, pnow.sec);
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| 253 | pjpidf_op.tuple.set_timestamp_np(pres->sub->pool, first, &pres->timestamp);
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| 254 |
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| 255 | } else if (pres->pres_type == PJSIP_PRES_TYPE_XPIDF) {
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| 256 | pjxpidf_set_status( pres->uas_data.xpidf, is_online );
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| 257 |
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| 258 | } else {
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| 259 | pj_assert(0);
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| 260 | }
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| 261 |
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| 262 | /* Send notify. */
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| 263 | return pjsip_event_sub_notify( pres->sub, state, &reason, pres->uas_body);
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| 264 | }
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| 265 |
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| 266 | /*
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| 267 | * Destroy subscription (can be called for both subscriber and notifier).
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| 268 | */
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| 269 | PJ_DEF(pj_status_t) pjsip_presence_destroy( pjsip_presentity *pres )
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| 270 | {
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| 271 | return pjsip_event_sub_destroy(pres->sub);
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| 272 | }
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| 273 |
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| 274 | /*
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| 275 | * This callback is called by event framework to query whether we want to
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| 276 | * accept an incoming subscription.
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| 277 | */
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| 278 | static void on_query_subscribe(pjsip_rx_data *rdata, int *status)
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| 279 | {
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| 280 | if (cb.accept_presence) {
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| 281 | (*cb.accept_presence)(rdata, status);
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| 282 | }
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| 283 | }
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| 284 |
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| 285 | /*
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| 286 | * This callback is called by event framework after we accept the incoming
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| 287 | * subscription, to notify about the new subscription instance.
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| 288 | */
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| 289 | static void on_subscribe(pjsip_event_sub *sub, pjsip_rx_data *rdata,
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| 290 | pjsip_event_sub_cb **set_sub_cb, int *expires)
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| 291 | {
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| 292 | pjsip_presentity *pres;
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| 293 | pjsip_accept_hdr *accept;
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| 294 |
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| 295 | pres = pj_pool_calloc(sub->pool, 1, sizeof(*pres));
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| 296 | pres->sub = sub;
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| 297 | pres->pres_type = PJSIP_PRES_TYPE_PIDF;
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| 298 | sub->user_data = pres;
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| 299 | *set_sub_cb = &sub_cb;
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| 300 |
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| 301 | accept = pjsip_msg_find_hdr(rdata->msg, PJSIP_H_ACCEPT, NULL);
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| 302 | if (accept) {
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| 303 | unsigned i;
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| 304 | int found = 0;
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| 305 | for (i=0; i<accept->count && !found; ++i) {
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| 306 | int j;
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| 307 | for (j=0; j<sizeof(accept_names)/sizeof(accept_names[0]); ++j) {
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| 308 | if (!pj_stricmp(&accept->values[i], &accept_names[j])) {
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| 309 | pres->pres_type = j;
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| 310 | found = 1;
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| 311 | break;
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| 312 | }
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| 313 | }
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| 314 | }
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| 315 | pj_assert(found );
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| 316 | }
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| 317 |
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| 318 | (*cb.on_received_request)(pres, rdata, expires);
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| 319 | }
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| 320 |
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| 321 | /*
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| 322 | * This callback is called by event framework when the subscription is
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| 323 | * terminated.
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| 324 | */
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| 325 | static void on_sub_terminated(pjsip_event_sub *sub, const pj_str_t *reason)
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| 326 | {
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| 327 | pjsip_presentity *pres = sub->user_data;
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| 328 | if (cb.on_terminated)
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| 329 | (*cb.on_terminated)(pres, reason);
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| 330 | }
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| 331 |
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| 332 | /*
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| 333 | * This callback is called by event framework when it receives incoming
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| 334 | * SUBSCRIBE request to refresh the subscription.
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| 335 | */
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| 336 | static void on_sub_received_refresh(pjsip_event_sub *sub, pjsip_rx_data *rdata)
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| 337 | {
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| 338 | pjsip_presentity *pres = sub->user_data;
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| 339 | if (cb.on_received_refresh)
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| 340 | (*cb.on_received_refresh)(pres, rdata);
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| 341 | }
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| 342 |
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| 343 | /*
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| 344 | * This callback is called by event framework when it receives incoming
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| 345 | * NOTIFY request.
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| 346 | */
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| 347 | static void on_received_notify(pjsip_event_sub *sub, pjsip_rx_data *rdata)
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| 348 | {
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| 349 | pjsip_presentity *pres = sub->user_data;
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| 350 |
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| 351 | if (cb.on_received_update) {
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| 352 | pj_status_t is_open;
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| 353 | pjsip_msg_body *body;
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| 354 | int i;
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| 355 |
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| 356 | body = rdata->msg->body;
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| 357 | if (!body)
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| 358 | return;
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| 359 |
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| 360 | for (i=0; i<sizeof(accept_types)/sizeof(accept_types[0]); ++i) {
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| 361 | if (!pj_stricmp(&body->content_type.type, &accept_types[i].type) &&
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| 362 | !pj_stricmp(&body->content_type.subtype, &accept_types[i].subtype))
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| 363 | {
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| 364 | break;
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| 365 | }
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| 366 | }
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| 367 |
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| 368 | if (i==PJSIP_PRES_TYPE_PIDF) {
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| 369 | pjpidf_pres *pres;
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| 370 | pjpidf_tuple *tuple;
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| 371 | pjpidf_status *status;
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| 372 |
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| 373 | pres = pjpidf_parse(rdata->pool, body->data, body->len);
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| 374 | if (!pres)
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| 375 | return;
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| 376 | tuple = pjpidf_pres_get_first_tuple(pres);
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| 377 | if (!tuple)
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| 378 | return;
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| 379 | status = pjpidf_tuple_get_status(tuple);
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| 380 | if (!status)
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| 381 | return;
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| 382 | is_open = pjpidf_status_is_basic_open(status);
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| 383 |
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| 384 | } else if (i==PJSIP_PRES_TYPE_XPIDF) {
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| 385 | pjxpidf_pres *pres;
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| 386 |
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| 387 | pres = pjxpidf_parse(rdata->pool, body->data, body->len);
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| 388 | if (!pres)
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| 389 | return;
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| 390 | is_open = pjxpidf_get_status(pres);
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| 391 |
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| 392 | } else {
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| 393 | return;
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| 394 | }
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| 395 |
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| 396 | (*cb.on_received_update)(pres, is_open);
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| 397 | }
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| 398 | }
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| 399 |
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